JP2000314149A - Method and structure for tubular member arrangement and tubular member protecting body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent tubular members from damage due to friction by absorbing variations in the lengths of tubular members by sliding the tubular members along a tubular member protecting body in a tubular member arranging method and structure and a tubular member protecting body. SOLUTION: Tubular members 41 comprises at least slacked parts provided for absorbing the general movements of the tubular members 41 provided for absorbing variations in the lengths of the tubular members 41 with respect to the side of a supporting base body 51 and variations in the lengths of the tubular members 41 arranged to the side of the supporting base body 51 and are arranged. Then the tubular members 41 are constituted so as to absorb the general movements and varieties in the lengths of tubular members 41 by sliding the tubular members 41 along the slide surface-side layer part 57 of a tubular member protecting body 53 mounted to a supporting member 52 via the recessed part S of a mounting means W.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tubular member disposing method, a tubular member disposing structure, and a tubular member protector effective for preventing abrasion and damage of the tubular member.

[0002]

2. Description of the Related Art The above-mentioned tubular member is used in equipment in each of the above fields, and is used, for example, for electric / electronic wiring, optical glass fiber wiring, hydraulic piping, air piping and the like. This tubular member is used in various fields of industry as described above, and is used in the case of the tubular member disposed between members that move relatively or in a single member. Even in the case of the tubular member, if the vibration generated from the member itself is large, the tubular member is provided with a margin by the length of the relative displacement between the tubular member and the member, and the tubular member and the member are provided. Since the tubular member abuts and slides on the member due to expansion and contraction, movement, and the like due to relative displacement between them, a buffering member such as a grommet is provided on one of the tubular member and the member.

Next, a hydraulic shovel for a construction machine, for example, in which the above tubular member is used will be described. As shown in FIG. 7, an upper revolving unit 12 is provided on the lower traveling unit 11 so as to be revolvable, and a cab 13 for protecting an operator is provided on one side of the upper revolving unit 12. A working device 14 is provided in the section.

In the working device 14, the base end of the first boom 21 is rotatably supported in the vertical direction via the horizontal shaft 21A of the swing frame 15 of the upper swing body 12, and the first boom 21 is rotatably supported. The second boom 23 has a vertical axis 22 at the tip of the second boom 23.
Is rotatably supported in the left and right direction, and a third boom 25 is rotatably supported in the left and right direction by the longitudinal axis 24 on the distal end of the second boom 23. 25
An arm 27 is rotatably supported in a vertical direction by a horizontal shaft 26, and a bucket 29 is rotatably supported in a vertical direction on a distal end of the arm 27 by a horizontal shaft 28.

The series of members from the first boom 21 to the third boom 25 is called an offset boom. This offset boom is driven by the offset mechanism 30
The offset mechanism 30 includes a bracket 31 projecting from the first boom 21 as shown in FIG.
And a rod 33 that is parallel to the second boom 23 and has an axial distance equal to the distance between the longitudinal axes 22 and 24 is connected by a pin between the bracket 32 and the bracket 32 protruding from the third boom 25.
A bracket 34 projecting from the first boom 21;
An offset cylinder 36 is connected to the bracket 35 projecting from the second boom 23 by a pin.

The first boom 21 is vertically turned by a boom cylinder 37 provided between the upper revolving unit 12 and the second boom 23 is turned left and right by the offset cylinder 36, and the arm 27 is The bucket 29 is rotated vertically by a bucket cylinder 39 mounted on the arm 27, while the bucket 29 is rotated vertically by an arm cylinder 38 mounted on the third boom 25.

In such a construction machine, the working device 1
In general, the support portion of the hydraulic rubber hose of the hydraulic drive system disposed at 4 is designed as a fixed point. On the other hand, in the portion where the working device 14 expands and contracts, the hose slack portion 42 is attached in advance to the hydraulic rubber hose routing as shown in FIG. It is made to absorb by expansion and contraction.

For example, as shown in FIGS. 7 and 8, a hydraulic rubber hose 41 which is disposed on the side surface of the offset boom and supplies pressure oil to the offset cylinder 36, the arm cylinder 38 and the bucket cylinder 39 has the following configuration. 8, between the first boom 21 and the second boom 23, the second
A hose slack portion 42 is provided between the boom 23 and the third boom 25 and between the third boom 25 and the arm 27 so as to cope with an offset operation or an arm operation.

However, when the hose rubber slack portion 42 cannot sufficiently absorb the variation in length of the hydraulic rubber hose 41, the movement of the working device causes the hose slack portion 42 of the hydraulic rubber hose 41 to bend greatly, causing interference with the structure. Wear and damage. In order to prevent this, as shown in FIG. 8, a metal-adhesive coil guard 43 is attached to the entire length of the hydraulic rubber hose 41, and these are supported by a support member 44 provided on the side surface of the offset boom. The hydraulic rubber hose 41 itself may be guarded.

In this case, the metal contact coil guard 43 is
Due to its structure, it is required over the entire length of the hydraulic rubber hose 41, which increases the weight and increases the cost. When the metal-adhesive coil guard 43 is worn due to interference with the structure, it needs to be replaced. For that purpose, it is necessary to attach and detach the hydraulic rubber hose 41, and only the metal-adhesive coil guard 43 cannot be easily replaced. , Work is not easy.

Further, when the hydraulic rubber hose 41 is detached, oil may leak or leak out from the inside of the hydraulic rubber hose 41, so that attention must be paid to work and oil leakage is environmentally unfavorable. Also, the offset cylinder 36
At the same time, the hydraulic rubber hose 41 and the like may be entirely covered with a guard cover (not shown) to protect the hydraulic rubber hose 41 and restrict the movement, but a large and relatively expensive guard cover is separately required. Along with the inner surface of the guard cover, the worn hydraulic rubber hose 41
Need to be replaced, and the work of attaching and detaching the guard cover and the hydraulic rubber hose 41 is not easy and costly.

[0012]

As described above, in the case where the variation in the length of the hydraulic rubber hose 41 is absorbed only by the local hose slack portion 42 as described above, the hose slack portion 42 is greatly bent. Therefore, there is a problem of interference with the structure, and in order to prevent this problem,
When attaching the metal contact coil guard 43 to the entire length of
As described above, the weight increases and the cost increases.

Further, when the metal-adhesive coil guard 43 is worn out and damaged, when the metal-adhesive coil guard 43 is replaced, the work is not easy due to the attaching / detaching work of the hydraulic rubber hose 41 and the like. Oil may leak. The guard cover is large and relatively expensive, and the guard cover and the hydraulic rubber hose 41
Is not easy, and the cost is high.

Further, the hydraulic rubber hose 41 is connected to the
As shown in FIG. 1, for example, the working device 14 is introduced into the inside through an opening provided at a lower portion of a hollow structure having a closed cross section that constitutes the first boom 21, and the opening is provided at an upper portion of the first boom 21. The hydraulic excavator is disposed so as to be drawn out and supplied to each of the hydraulic cylinders to prevent breakage due to interference with other members of the hydraulic rubber hose 41, or to install the hydraulic rubber hose 41 inside the first boom 21 to thereby provide the entire hydraulic excavator. Try to improve the appearance.

Then, for example, the first boom 21
A grommet is fitted along the inner peripheral edge of each of the openings provided in the upper and lower portions, and the opening and the hydraulic rubber hose 41 are fitted.
However, this is based on the premise that it is fixed, and the application of a moving part such as a front hydraulic line of a hydraulic shovel cannot be said to be an appropriate use.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has been made in consideration of the above-mentioned problems. It is an object of the present invention to provide a tubular member arranging method, a tubular member arranging structure, and a tubular member protecting body which enable smooth sliding of the tubular member which can be absorbed by the above, and which can prevent abrasion damage of the tubular member.

[0017]

According to the first aspect of the present invention, there is provided a method for disposing a tubular member according to the present invention, wherein the outer surface of a portion on the support base material side corresponding to a substantially movable range of the tubular member has a friction coefficient. A small-sized tubular member protector is attached, and the tubular member is movably disposed via the tubular member protector.

According to a second aspect of the present invention, there is provided the tubular member arranging method according to the first aspect, wherein the tubular member is mounted on an outer surface of a portion on the support base material side corresponding to a substantially movable range of the tubular member. The invention is characterized in that at least a portion of the corresponding tubular member is movably disposed on the tubular member protector having a small friction coefficient. Claim 3
The tubular member disposing structure of the present invention described above has a support member attached to a support base material side corresponding to a movable range of the tubular member, and a friction coefficient provided at least on an outer surface of the support member in contact with the tubular member. And a tubular member protector configured to be small.

According to a fourth aspect of the present invention, there is provided the tubular member disposing structure according to the third aspect, wherein the tubular member protecting body is attached to the supporting base material side by a mounting means. And a sliding surface side layer portion having a small coefficient of friction provided at a portion of the tubular member coupling side layer portion which comes into contact with the tubular member. According to a fifth aspect of the present invention, there is provided the tubular member arranging structure according to the fourth aspect, wherein the mounting means holds the tubular member protective body between the support base material side by elastic force. It is characterized by:

According to a sixth aspect of the present invention, in the tubular member disposing structure according to any one of the third to fifth aspects, the sliding surface side layer portion and the tubular member coupling side layer portion are different from each other. At least one of identification means capable of identification and detection means for detecting that the sliding surface side layer portion has been worn and has reached the portion of the tubular member coupling side layer portion which has reached the identification means. It is characterized by.

According to a seventh aspect of the present invention, there is provided the tubular member protector of the present invention, which is disposed at a portion of the outer surface on the support base member side corresponding to the substantially movable range of the tubular member and in contact with the tubular member. It is characterized by comprising a sliding surface side layer portion configured to be small and a tubular member coupling side layer portion that is provided on the support base member side so as to be insertable and removable. According to an eighth aspect of the present invention, in the configuration of the seventh aspect, the tubular member protector of the present invention is disposed at a portion of the outer surface of the support base member side corresponding to the substantially movable range of the tubular member and in contact with the tubular member. And a sliding surface side layer portion having a small friction coefficient and the tubular member coupling side layer portion elastically sandwiched between the support base member side.

According to a ninth aspect of the present invention, there is provided the tubular member protector according to the seventh or eighth aspect, wherein the sliding surface side layer, the tubular member coupling side layer, and the tubular member coupling side layer include The provided core material layer is characterized by being integrally formed. According to a tenth aspect of the present invention, there is provided the tubular member protective body according to any one of the seventh to ninth aspects, wherein at least one of the sliding surface side layer portion and the tubular member coupling side layer portion is provided. On the other hand, it is characterized in that an identification means for identifying the sliding surface side layer portion and the tubular member coupling side layer portion is provided.

According to a eleventh aspect of the present invention, in the tubular member protecting body according to the tenth aspect, the identification means is capable of identifying the sliding surface side layer portion and the tubular member coupling side layer portion with different colors. It is characterized by having. Claim 12
The tubular member protector of the present invention described in claims 7, 9, and 10.
The identification means for distinguishing the sliding surface side layer portion and the tubular member connecting side layer portion from each other and the sliding surface side layer portion is worn to reach the tubular member connecting side layer portion. And at least one of a detecting means capable of detecting the occurrence.

[0024]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
Referring to FIG. Note that FIG. 7 and FIG. 8 are referred to as needed. FIG. 1 is a schematic perspective explanatory view showing one embodiment of the present invention, FIG. 2 is a schematic perspective view of the tubular member protector of FIG. 1,
3 is a schematic explanatory view showing a main part of a cross section taken along line 3A-3A in FIG. 1, FIG. 4 is a schematic explanatory view showing another embodiment of the present invention, and FIG. 5 is a view taken along line 5A-5A in FIG. FIG. 6 is a schematic explanatory view showing a main part of a cross section, FIG. 6 is an explanatory view of an opening of a first boom, (A) is an enlarged explanatory view showing a part taken along arrow 6Y in FIG.
FIG. 6B is a schematic explanatory view showing a main part of a cross section taken along line 6B-6B in FIG.

FIG. 1 illustrates a case where the tubular member disposing method, the tubular member disposing structure and the tubular member protecting body of the present invention are applied to a hydraulic shovel of a construction machine. In such a construction machine, the upper swing body 12 is provided on the lower traveling body 11 so as to be swingable, as described in the related art (see FIG. 7). In FIG. 1, reference numeral 51 denotes a first boom 2 in the offset boom of the excavator shown in FIGS.
1, a second boom 23, an arm 27, and the like.
A support member 52 formed in a U-shape is attached by welding or the like, and a hydraulic rubber hose 4 as a tubular member is provided in a U-shaped valley.
1 has a ring-shaped portion 52a through which the hydraulic rubber hose 41 is movably supported.

Inside the ring-shaped portion 52a of the support member 52, a tubular member protector 53 is integrally mounted so that the hydraulic rubber hose 41 as a tubular member can be moved.
In the case of the present embodiment, the tubular member protector 53 is formed in a circular ring shape and provided with a ring-shaped concave portion S along the outer peripheral surface, and a ring-shaped portion 52a of the support member 52 (hereinafter simply referred to as the support member 52). (May also be referred to as).

The tubular member protector 53 is connected to the support member 5.
2 and a sliding part having a small wear coefficient at least on the surface side in contact with the hydraulic rubber hose 41 in order to prevent the hydraulic rubber hose 41 from being worn and damaged, and to prevent the hydraulic rubber hose 41 from being worn and damaged. As a function. The required length of the tubular member protector 53 is determined by the length of expansion and contraction of the slack portion 42 of the hydraulic rubber hose 41 due to the movement of the working device 14 as shown in FIG.

As shown in FIGS. 1 to 3, the tubular member protector 53 is attached to the support member 52 by mounting means W. In the case of the present embodiment, the mounting means W is mounted so as to be clamped from the inner peripheral surface of the ring-shaped portion 52a of the support member 52 to the ring-shaped portion 52a and is clamped by its own elastic force. 53a is formed in a circular ring shape as shown in FIG.

As shown in FIG. 2, one end 54a and the other end 54b of a portion 54 cut at a position located in the radial direction of the main body 53a are attached to the support member 52 (not shown). Before the cutting, the cutting portion is kept open and the cutting end 54a and the cutting end 54a are kept open.
b is provided so as to be able to expand and contract so as to be bent inward so as to come into contact with the support member 52 so that the concave portion S provided on the outer periphery of the tubular member protector 53 can be inserted into and removed from the support member 52.

As shown in FIGS. 1 to 3, the tubular member protector 53 is made of a material having a small friction coefficient on the inner peripheral side in contact with the hydraulic rubber hose 41 which is a tubular member, that is, the friction coefficient is small. A sliding surface side layer portion 57 configured to be small, a support member coupling side layer portion 58 configured of a material having a large friction coefficient on an outer peripheral side having a concave portion S sandwiched between the support members 52,
The core layer 59 for enhancing the holding force on the support member 52 provided in the sliding surface side layer 57 is integrally formed.

The core layer 59 is not always necessary. For example, the core layer 59 may be sandwiched by the support member 52 via the recess S by the elastic force of the main body 53 made of an elastic material. The sliding surface side layer portion 57 is, for example,
The support member bonding side layer 58 is formed of, for example, rubber (rubber), and the core material layer 59 is formed of, for example, a leaf spring.

The sliding surface side layer 5 of the tubular member protector 53
7 and the core material layer 59 or the support member coupling side layer 58,
Any one of these means may be colored with a different color, particularly in a mutually conspicuous color, a material may be changed, or a separately provided color-specific member may be embedded.
7 and a core member layer 59 or a support member coupling side layer 58 are configured as identification means 57a.

Then, for example, the tubular member 41 slides on the sliding surface side layer portion 57 of the tubular member protecting body 53 to slide the sliding surface side layer portion 5.
7 is worn, the identification means 57a provided on the core layer 59 or the support member coupling side layer 58 is exposed, and it is possible to identify that it is time to replace the tubular member protector 53. In addition, abrasion damage of the tubular member 41 can be effectively prevented.

If the detection means 57S for detecting the arrival at the identification means 57a is provided on the tubular member protection body 53,
Furthermore, wear damage of the tubular member 41 can be effectively prevented. That is, the detecting means applies the electric circuit R to the supporting member coupling side layer portion 58 that contacts the lower surface of the sliding surface side layer portion 57 in the tubular member protection body 53 as schematically shown in FIG. The wiring to be formed may be embedded in advance, and the sliding surface layer portion 57 may be worn by the above use, and then the embedded wiring may be cut by the abrasion, and the electric signal may be interrupted by the disconnection. For example, when the electric signal is interrupted due to the disconnection, an alarm (not shown) may be generated, or the warning lamp may be turned off to notify the wear.

Next, the operation and effect of the illustrated embodiment will be described. As shown in FIGS. 1 to 3, the concave portion S of the tubular member protection body 53 formed in a circular ring shape is clamped from the inner peripheral surface side of the ring-shaped portion 52 a of the support member 52. Further, the tubular member protector 53 is attached to the support member 52 by the tightening force of the core layer 59 to enhance the clamping force of the concave portion S on the outer peripheral surface of the tubular member protector 53 mad by the support member 52. Securely fixed by elastic force.

The hydraulic rubber hose 41 is inserted into the through-hole of the tubular member protector 53 sandwiched between the support members 52 as described above.
When the hydraulic rubber hose 41 is inserted into the support member 52 to which the tubular member protector 53 is attached in a state where the hydraulic rubber hose 41 is pulled toward one side in the length direction when the hydraulic rubber hose 41 is inserted, Can be easily shifted on the inner peripheral surface of the ring-shaped portion 52a of the support member 52.

On the other hand, the inner peripheral side of the tubular member protector 53 has a sliding surface side layer 5 made of a material having an extremely small friction coefficient.
7, the hydraulic rubber hose 41 is in contact with the hydraulic rubber hose 41, so that the hydraulic rubber hose 41 can smoothly slide. That is, the tubular member protector 53 causes the outer supporting member coupling side layer portion 58 to support the outer side of the supporting member 5 by the elastic force of the concave portion S of the main body portion 53a or the elastic force of the core material layer portion 59 made of a spring material or the like.
2 and firmly attached by the frictional force based on the clamping force, and the sliding surface side layer portion 57 configured to reduce the friction coefficient on the inner peripheral side of the tubular member protector 53 as described above.
Enables smooth sliding with respect to the hydraulic rubber hose 41.

As described above, the hydraulic rubber hose 41 disposed along the supporting base material 51 side is supported by the supporting member 52 via the tubular member protector 53 functioning as a sliding part with respect to the hydraulic rubber hose 41. The movable part of the working device 14 of the hydraulic shovel (for example, between the first boom 21 and the second boom 23 shown in FIG. Boom 23
Between the third boom 25 and the third boom 25 and the arm 27
The hydraulic rubber hose 41 can freely move in the length direction or the like of any hose portion other than the hose slack portion 42 provided between
The expansion / contraction effect at the slack portion 42 of the hydraulic rubber hose 41
In this case, the fluctuation of the length of the hydraulic rubber hose occurring at that time can be absorbed by the entire movement of the hydraulic rubber hose 41.

Further, in the case where the hydraulic rubber hose 41 is fixedly supported by the support member 52, even when the structure is provided with slack between the above-mentioned respective structures, the tubular member is formed similarly to the above embodiment. Since the sliding can be performed smoothly by the protection body 53, substantially the same operation and effect as the above embodiment can be obtained. When the wear of the sliding surface side layer portion 57 of the tubular member protective body 53 progresses and reaches the limit, a color of the core material layer portion 59 different from the sliding surface side layer portion 57 appears. At the time when the color of the layer portion 59 is visually identified,
The tubular member protector 53 may be replaced with a new one.

The replacement of the tubular member protector 53 is performed by replacing the one end 54a and the other end 5a of the cut portion of the tubular member protector 53.
4b is bent so as to contract inward, and then only the tubular member protector 53 is removed from the support member 52, and a new circular annular tubular member protector 53 is mounted as described above, whereby the support base material 51 side The tubular member protector 53 can be easily attached without removing the hydraulic rubber hose 41 from the housing.

Therefore, as described above, in the routing in which the hydraulic rubber hose 41 is disposed by the working device 14 having many movable parts, the fluctuation of the hose length of the hydraulic rubber hose 41 can be smoothly absorbed. Thus, the degree of freedom in routing design of the hydraulic rubber hose can be improved. In addition, since the fatigue of the material does not concentrate on the local portion (slack portion 42) of the hydraulic rubber hose 41, it is possible to prevent a breakage accident due to abrasion, expansion, contraction and torsion, and the life of the hydraulic rubber hose 41 can be greatly extended. .

Further, the tubular member protector 53 can be partially attached to the hydraulic rubber hose 41, and there is no need to provide a large-sized structure such as a conventional guard cover, so that the structure can be simplified and the cost can be reduced. In addition, the tubular member protector 53
Is easy to install and remove, so it is easy to retrofit and replace.

Further, since only the tubular member protection body 53 needs to be replaced and the entire hose does not need to be replaced, there is no danger of oil leakage or outflow, the replacement operation can be easily performed, and the environment is friendly. Further, for example, the replacement time of the tubular member protective body 53 can be visually identified by the color of the core material layer portion 59 different from the sliding surface side layer portion 57, and the maintenance property is good.

Further, since the spiral-shaped hose protector 53 is provided with the cut portion 54 as described above, the support member 52 is provided.
Is flexible with respect to the ring-shaped portion 52a, and within a certain range, the support member 52 and the openings 21L, 21U,
It can be mounted on 15U etc. Next, another embodiment of the present invention will be described with reference to FIGS. FIG. 7, FIG.
Referring also to FIG.

In the above embodiment, the support member 51 is, for example, the tubular member 41 is attached to the outer wall of the first boom 23 by the support member 52.
According to another embodiment of the present invention, as shown in FIGS. 4 to 6, the first embodiment is configured in the hollow structure described in the related art (see FIG. 7). Boom 21,
In this embodiment, the first boom 23, the arm 27, etc.
The tubular member 41 is introduced from an opening 21L provided at a lower portion of the boom 21 and is disposed so as to be led out from an opening 21U provided at an upper portion, and is substantially the same as the above embodiment. The parts will be described with the same reference numerals.

As shown in FIG. 8, the first boom 21 is pivotally supported by the swing frame 15 via a shaft 21A so as to be vertically rotatable, and includes an upper plate 21a, a lower plate 21b, a side plate 21c, 21d, and the section is configured to be a closed section. As shown in FIG. 4, the upper and lower openings 21L and 21U of the first boom 21 and the opening 15U provided in the swing frame 15 have:
It is formed in a horizontally long rectangular shape shown in FIGS. 4 and 5, and is inserted and removed along the inner peripheral edge of the openings 21L, 21U and 15U. The formed tubular member protection body 53 is mounted.

The above-mentioned rectangular annular tubular member protector 53 is
It is attached along the outer peripheral surface by the elastic force of the concave portion S as in the above-described embodiment, and the holding force is enhanced by the elastic force of the core material layer portion 59 made of a spring material or the like as necessary as described above. Can also. Since the other embodiments of the present invention are configured as described above, the slack portion 42 of the hydraulic rubber hose 41 is greatly bent by the movement of the working device 14, and the openings 21L, 21U, and 15U, which are structures, are formed. Even if it interferes with the inner peripheral edge, since it is movably supported by the sliding surface side layer portion 57 of the tubular member protector 53 so that it can slide smoothly, the slack portion 42 of the hydraulic rubber hose 41
, And fluctuations in the length of the hydraulic rubber hose 41 can be effectively absorbed by the overall movement of the hydraulic rubber hose 41.

The tubular member protector 53 of the above-described embodiment of the present invention and other embodiments is formed in a circular ring shape and a rectangular ring shape. It may have an L-section plate shape or the like. In other words, if the tubular member protector 53 is attached to the portion on the support base 51 side corresponding to the movable range of the tubular member 41 disposed on the support base 51 side, Approximately the same function and effect can be obtained.

The mounting means W of the tubular member protector 53 on the supporting base material side may be constituted by an adhesive connection, a screw connection, an elastic connection, or the like. Can be played.

[0050]

As described above in detail, according to the method of disposing the tubular member according to the first aspect of the present invention, the outer surface of the portion on the supporting base material side corresponding to the substantially movable range of the tubular member has friction. Since the tubular member is mounted via a tubular member protector having a small coefficient, and the tubular member protector is movably disposed, the tubular member protector allows the tubular member protector to smoothly move with respect to the support member. It can slide, can absorb the variation of the length of the tubular member, and can also absorb the movement of the entire tubular member.Also, it can prevent the tubular member from being damaged due to local wear, expansion, contraction, and torsion. Life can be extended.

According to a second aspect of the present invention, in the configuration of the first aspect, the tubular member is disposed within a substantially movable range of the tubular member disposed along the supporting base material side. Since at least the corresponding portion of the tubular member is movably disposed on the tubular member protector which is mounted on the outer surface of the corresponding portion of the supporting base material side and has a small friction coefficient. , In addition to the effects of claim 1,
The tubular member protector is attached to the supporting base material side corresponding to the portion where the tubular member moves, so that the tubular member can smoothly slide with respect to the tubular member protector, and the tubular member is entirely By being able to move freely
Variations in the length of the tubular member can be absorbed by the movement of the entire tubular member, damage to the tubular member due to local wear, expansion and contraction, and twisting can be prevented, and the life of the tubular member can be extended.

According to the third aspect of the present invention, the supporting member is provided on the supporting base material side corresponding to the movable range of the tubular member, and the supporting member is in contact with at least the tubular member. And a tubular member protector provided on the outer surface of the tubular member and having a small coefficient of friction, so that the tubular member disposed along the supporting base material side can be supported by the tubular member protector. To smoothly absorb the change in length of the tubular member, prevent the tubular member from being damaged due to local wear, expansion, contraction, and twisting, and reduce the life of the tubular member. Can be extended.

Furthermore, since the tubular member protector can be partially inserted and removed only at a necessary portion of the support base material where the tubular member may come into contact, an inexpensive tubular member arrangement structure can be provided. Further, since there is no need to remove the tubular member, there is no danger of oil leakage or outflow in the removed tubular member as in the conventional example. According to the fourth aspect of the present invention, in the configuration of the third aspect, the tubular member protecting body is connected to the supporting base material side by a mounting means. And a sliding surface side layer portion having a small coefficient of friction provided at a portion of the tubular member coupling side layer portion which comes into contact with the tubular member. The member protector can be replaced, and the maintainability can be improved.

According to the fifth aspect of the present invention, in the configuration of the fourth aspect, the mounting means holds the tubular member protective body at a position on the supporting base material side by elastic force. Since the configuration is such that the tubular member protector is easily attached and detached in addition to the effect of the fourth aspect, the maintainability can be further improved.

According to a sixth aspect of the present invention, in the configuration according to any one of the third to fifth aspects, the sliding surface side layer portion and the tubular member coupling side layer portion are distinguished from each other. Since at least one of the detecting means for detecting that the discriminating means and the sliding surface side layer portion are worn and reach the portion of the discriminating means of the tubular member coupling side layer portion is provided, In addition to the effects of any of claims 3 to 5, the tubular member protector can be replaced with a new one by the recognition means or the detection means to prevent damage to the tubular member in advance.

According to the seventh aspect of the present invention, there is provided a tubular member protector according to the present invention, which is disposed at a portion of the outer surface of the support base member side corresponding to the substantially movable range of the tubular member and in contact with the tubular member. And a tubular member coupling side layer portion which is provided on the support base member side so that it can be inserted and removed, so that the support member may be in contact with the tubular member. Since the tubular member protector can be partially inserted and removed only at a necessary portion on the material side, an inexpensive tubular member protector can be made, and there is no need to remove the tubular member. There is no danger of oil leakage or outflow in the removed tubular member.

According to an eighth aspect of the present invention, in the configuration of the seventh aspect, the support base member side in contact with the tubular member corresponding to a substantially movable range of the tubular member is provided. Since there are provided a sliding surface side layer portion provided at a portion on an outer surface and configured to have a small friction coefficient, and the tubular member coupling side layer portion elastically sandwiched between the support base member side. In addition to the effect of 7, the tubular member protector can be easily attached to and detached from the support base member without removing the tubular member from the support base material side, and the workability required for mounting and replacement can be improved.

According to a ninth aspect of the present invention, in the configuration of the seventh or eighth aspect, the sliding surface side layer, the tubular member coupling side layer, and the tubular member coupling side layer. Since the core material layer portion provided in the portion is integrally formed, in addition to the effect of claim 7 or 8, it is possible to partially insert and remove only the necessary portion of the tubular member without removing the tubular member. Accordingly, the workability required for mounting and replacement can be improved.

According to a tenth aspect of the present invention, there is provided the tubular member protective body according to any one of the seventh to ninth aspects, wherein at least one of the sliding surface side layer portion and the tubular member coupling side layer portion is provided. Since the identification means for identifying the sliding surface side layer portion and the tubular member connecting side layer portion is provided on one of the sides, in addition to the effect of any one of claims 7 to 9, the sliding surface side layer portion is replaced. We can recognize that it is time.

According to the eleventh aspect of the present invention, in the configuration of the tenth aspect, the sliding surface side layer portion and the tubular member coupling side layer portion can be distinguished by different colors. Since the identification means is provided, in addition to the effect of the tenth aspect, it is possible to easily recognize that the sliding surface side layer portion has reached the time of replacement. According to the tubular member protective body of the present invention described in claim 12, in the configuration according to any one of claims 7, 9, and 10, the above-described sliding surface side layer portion and tubular member coupling side layer portion can be distinguished. Claims 7 and 9 are provided with at least one of an identification means and a detection means capable of detecting that the sliding surface side layer portion is worn and reaches the tubular member coupling side layer portion. In addition to the effects of the tenth aspect, the sliding surface side layer portion quickly recognizes wear by the recognition means, or transmits a detection signal detected by the detection means to, for example, a warning device in an operator's room so that the tubular member protective body can be detected in advance. It is possible to provide a tubular member protector that informs that the replacement time has been reached.

[Brief description of the drawings]

FIG. 1 is a schematic perspective explanatory view showing one embodiment of the present invention.

FIG. 2 is a schematic perspective view of the tubular member protecting body of FIG.

FIG. 3 is a schematic explanatory view showing a main part of a cross section taken along line 3A-3A in FIG. 1; It is sectional drawing.

FIG. 4 is a schematic explanatory view showing another embodiment of the present invention.

FIG. 5 is a schematic explanatory view showing a main part of a cross section along line 5A-5A in FIG. 4;

FIG. 5 is an explanatory view of an opening of a first boom,
(A) is an enlarged explanatory view showing a part of arrow 6Y in FIG.
FIG. 6B is a schematic explanatory view showing a section taken along line 6B─6B in FIG.

FIG. 7 is a schematic explanatory view showing a side surface of a conventional hydraulic excavator.

FIG. 8 is an enlarged explanatory view showing a main part of a second boom in FIG. 7;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Lower traveling body 12 Upper revolving superstructure 13 Cab 14 Working device 15 Swing boom 15U Opening 21 First boom 21L Opening 21U Opening 23 Second boom 22, 24 Vertical axis 25 Third boom 27 Arm 29 Bucket 35 Bracket 36 Offset Cylinder 38 Arm cylinder 39 Bucket cylinder 41 Tubular member (hydraulic rubber hose) 42 Loose part 51 Supporting body 52 Support member 52a Ring-shaped part 53 Tubular member protector 53a Main body part 54 Cut part 57 Slip surface side layer part 58 Support member Coupling side layer part 59 Core material layer part S Depression W Mounting means

Claims (12)

[Claims] 1. A tubular member protector having a small friction coefficient is mounted on an outer surface of a portion on the support base material side corresponding to a substantially movable range of the tubular member, and the tubular member is protected via the tubular member protector. Characterized in that the members are movably arranged.
A method for disposing a tubular member. 2. The tubular member protector, which is attached to the outer surface of the portion on the supporting base material side corresponding to the substantially movable range of the tubular member and has a small coefficient of friction, at least the corresponding tubular member 2. The method according to claim 1, wherein the part of the member is movably arranged. 3. A tubular member provided on a supporting base material side corresponding to a movable range of the tubular member, and a tubular member provided at least on an outer surface of the supporting member that comes into contact with the tubular member and having a small friction coefficient. A tubular member disposing structure, comprising a protective body. 4. The tubular member protecting body is provided at a portion of the tubular member connecting side layer that is connected to the supporting base material side by mounting means, and at a portion of the tubular member connecting side layer that contacts the tubular member. The tubular member disposing structure according to claim 3, further comprising a sliding surface side layer portion configured to have a small friction coefficient. 5. The tubular member arranging structure according to claim 4, wherein said mounting means is configured to hold said tubular member protective body between said support base material side by elastic force. 6. A discriminating means for discriminating between the sliding surface side layer portion and the tubular member connecting side layer portion, and the sliding surface side layer portion is worn to reach the identification means portion of the tubular member connecting side layer portion. And at least one of detection means for detecting that the operation has been performed.
6. The tubular member disposing structure according to any one of items 5 to 5. 7. A sliding surface side layer portion having a small coefficient of friction disposed at a portion of the outer surface on the side of the supporting base member that comes into contact with the tubular member corresponding to a substantially movable range of the tubular member; A tubular member protection body, comprising: a tubular member coupling side layer portion provided so as to be insertable into and removable from the base member side. 8. A sliding surface side layer portion which is disposed at a portion of the outer surface on the side of the support base member which comes into contact with the tubular member corresponding to a substantially movable range of the tubular member and has a small friction coefficient; The tubular member protection body according to claim 7, further comprising the tubular member coupling side layer portion elastically held between the support base member side. 9. The sliding surface side layer portion, the tubular member connecting side layer portion and the core material layer portion provided on the tubular member connecting side layer portion are integrally formed. 7 or 8
The tubular member protection body according to claim 1. 10. An identification means for identifying the sliding surface side layer portion and the tubular member coupling side layer portion is provided on at least one of the sliding surface side layer portion and the tubular member coupling side layer portion. The tubular member protector according to any one of claims 7 to 9, wherein: 11. The tubular member protective body according to claim 10, wherein said sliding surface side layer portion and said tubular member coupling side layer portion are provided with said identification means capable of distinguishing them by different colors. 12. A discriminating means for discriminating between the sliding surface side layer portion and the tubular member connecting side layer portion, and a detection device capable of detecting that the sliding surface side layer portion is worn and reaches the tubular member connecting side layer portion. The tubular member protective body according to any one of claims 7, 9, and 10, further comprising at least one of the means.