JPH11325324A - Hose laying method and device, and hose protector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To absorb variation in a hose length by a motion of a hose as a whole. SOLUTION: A supporting member 52 formed into a U-shape is attached to a side face of a supporting base material 51 by welding or the like, and a hydraulic rubber hose 41 is supported by the supporting member 52 freely to move. A hose protector 53 is fitted integrally to the rubber hose 41 within a range to allow moving of the rubber hose 41 inside the supporting member 52. The hose protector 53 is formed to make small a friction coefficient in the surface side contacting at least with the supporting member 52, and a required length of the protector 53 is determined by a moving length of the hydraulic rubber hose 41 accompanied to moving of a working device.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hose arranging method, a hose arranging apparatus, and a hose protector effective for preventing abrasion and damage of a hose.

[0002]

2. Description of the Related Art As shown in FIG. 4, an upper revolving unit 12 is provided on a lower traveling unit 11 so as to be revolvable.
A cab 13 for protecting an operator is provided on one side of the upper revolving unit 12, and a working device 14 is provided substantially at the center of the upper revolving unit 12.

In the working device 14, a base end of a first boom 21 is pivotally supported on the upper revolving unit 12 by a horizontal axis so as to be vertically rotatable. The base end of the second boom 23 is rotatably supported in the left-right direction.
A third boom 25 is rotatably supported on the distal end of the boom 23 by a vertical axis 24 in the left-right direction. An arm 27 is supported on the third boom 25 by a horizontal axis 26 in a vertically rotatable manner.
A bucket 29 is rotatably supported at the tip of 27 by a horizontal shaft 28 so as to be vertically rotatable. A series of members from the first boom 21 to the third boom 25 is called an offset boom.

The offset boom is driven by an offset mechanism 30.
It has. The offset mechanism 30 includes a first boom 21
A rod 33 parallel to the second boom 23 and having an axial distance equal to the distance between the longitudinal axes 22 and 24 is provided between the bracket 31 projected from the third boom 25 and the bracket 32 projected from the third boom 25 by a pin. A bracket 34 connected and protruding from the first boom 21 and a bracket 35 protruding from the second boom 23
And the offset cylinder 36 is connected by a pin.

The first boom 21 is vertically rotated by a boom cylinder 37 provided between the upper revolving unit 12 and the second boom 23 is horizontally rotated by the offset cylinder 36, and the arm 27 is An arm cylinder 38 attached to the third boom 25 pivots up and down, and the bucket 29
Is turned up and down by a bucket cylinder 39 mounted on the arm 27.

In such a construction machine, the working device 14
In general, the support portion of the hydraulic rubber hose of the hydraulic drive system disposed in the hydraulic drive system is designed as a fixed point.

On the other hand, in a portion where the working device 14 expands and contracts and expands and contracts, a slack portion is provided in advance to the hydraulic rubber hose routing so that a change in the length of the hydraulic rubber hose is absorbed by the expansion and contraction of the hose slack portion. ing.

For example, as shown in FIG. 5, a first rubber boom 21 is provided on a hydraulic rubber hose 41 which is disposed on the side surface of the offset boom and supplies hydraulic oil to the offset cylinder 36, arm cylinder 38 and bucket cylinder 39. Between the second boom 23 and the second boom 23, between the second boom 23 and the third boom 25,
A hose slack portion 42 is provided between the boom 25 and the arm 27 so as to cope with the offset operation and the arm operation.

However, if the hose rubber slack portion 42 cannot sufficiently absorb the variation in the length of the hydraulic rubber hose 41,
Due to the movement of the working device, the hose slack portion 42 of the hydraulic rubber hose 41 bends greatly, interferes with the structure, and is easily worn and damaged.

In order to prevent this, as shown in FIG. 5, a metal tight 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. As a result, the hydraulic rubber hose 41 itself may be guarded.

In this case, the metal contact coil guard 43 is required over the entire length of the hydraulic rubber hose 41 due to its structure, which increases the weight and increases the cost.

When the metal-adhesive coil guard 43 is worn due to interference with a structure, it needs to be replaced. For that purpose, it is necessary to attach / detach the hydraulic rubber hose 41. Cannot be replaced and work is not easy.

Further, when removing the hydraulic rubber hose 41,
There is a risk of oil leaking or spilling from the inside of the hose, requiring care in operation, and spilling of oil is environmentally unfavorable.

A hydraulic rubber hose 41 and the like together with the offset cylinder 36 are entirely guard-covered (not shown).
In some cases, the hydraulic rubber hose 41 protects the hydraulic rubber hose 41 and restricts its movement, but requires a separate large and relatively expensive guard cover, and also slides on the inner surface of the guard cover and wears out. Must be replaced, and the work of attaching and detaching the guard cover and the hydraulic rubber hose 41 is not easy, and the cost is high.

[0015]

As described above, when the variation in length of the hydraulic rubber hose 41 is absorbed only by the conventional local hose slack portion 42, the hose slack portion 42 is greatly bent, and the In order to prevent this interference, in order to prevent this interference, if the metal tight coil guard 43 is attached to the entire length of the hydraulic rubber hose 41, the weight increases and
There is a problem of high cost.

Further, if the metal-adhesive coil guard 43 is worn and damaged, the replacement of the metal-adhesive coil guard 43 involves not only the work of attaching and detaching the hydraulic rubber hose 41, but also the work is not easy. There is a problem such as oil leakage.

Further, the guard cover is large and relatively expensive, and the guard cover and the hydraulic rubber hose are used.
There is a problem that the replacement work of 41 is not easy and the cost is high.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and has as its object to provide a hose disposing method and a hose disposing device capable of absorbing a change in length of a hose by moving the entire hose. Another object of the present invention is to provide a hose protector that can be partially mounted on a hose to enable smooth sliding of the hose and prevent wear and damage of the hose.

[0019]

According to the first aspect of the present invention, a hose provided along a supporting base material is mounted on an outer peripheral surface of the hose and has a small friction coefficient at least on the surface side. This is a method of disposing a hose that is movably supported by a support member attached to a support base material via a hose protector.

Thus, the hose can be smoothly slid with respect to the supporting member by the hose protector, and can be freely moved as a whole. Absorb length fluctuations with the movement of the entire hose.

According to a second aspect of the present invention, there is provided a support member attached to a support base material for movably supporting a hose, and a surface side integrally attached to the hose inside the support member and in contact with at least the support member. And a hose protector formed with a small friction coefficient.

Thus, the hose is supported by the supporting member of the supporting base material via the hose protector so that the hose can slide smoothly. For example, the hose is free even at any part other than the movable part in the working device of the construction machine. By moving the hose, the fluctuation of the hose length due to the expansion and contraction of the hose slack portion is absorbed by the movement of the entire hose.

According to a third aspect of the present invention, in the hose arranging device according to the second aspect, the hose protector is provided on a main body portion which is fastened to the hose by its own tightening force, and provided on the main body portion. And a hose insertion part.

Thus, the main body of the hose protector fitted to the hose from the hose insertion portion is fixed to a part of the outer peripheral surface of the hose by its own tightening force without using any special fastening means.

According to a fourth aspect of the present invention, there is provided a sliding surface side layer formed of a material having a small friction coefficient in contact with a support member, and a hose formed of a material having a large friction coefficient in contact with an outer peripheral surface of the hose. A hose protector comprising a contact surface side layer portion and a core material layer portion for applying a fastening force to a hose with the hose contact surface side layer portion inside.

With this, the inner hose contact surface side layer portion is brought into close contact with the outer peripheral surface of the hose by the fastening force of the core material layer portion and fastened, and the contact surfaces are united by a frictional force based on the fastening force. I do. The sliding surface side layer portion on the front side enables the hose to slide smoothly on the support member.

According to a fifth aspect of the present invention, in the hose protector according to the fourth aspect, the sliding surface side layer portion, the hose contact surface side layer portion and the core material layer portion are integrally formed in a spiral shape. Things.

Thus, the spirally formed hose protector is flexible with respect to the hose diameter, and can be mounted on a hose having an arbitrary thickness.

According to a sixth aspect of the present invention, in the hose protector according to the fourth or fifth aspect, the sliding surface side layer portion and the core material layer portion are colored in different colors.

Thus, when the wear of the sliding surface side layer reaches the limit, a color of the core layer different from the sliding surface side layer appears, and the replacement time can be visually recognized by the color of the core layer. .

[0031]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIG.
This will be described with reference to FIGS. In addition, FIG. 4 and FIG. 5 are referred to as needed.

In FIG. 1, reference numeral 51 denotes a supporting base material corresponding to the second boom 23 and the like in the offset boom of the hydraulic excavator shown in FIGS.
A support member 52 formed of a round steel bar or the like in a U shape is
The hydraulic rubber hose 41 is movably supported by the support member 52.

Inside the support member 52, a hose protector 53 is integrally attached to the hydraulic rubber hose 41 within a range in which the hydraulic rubber hose 41 can be moved.

The hose protector 53 is a hydraulic rubber hose.
It has a function of preventing wear and damage of the hydraulic rubber hose 41 by being integrally mounted on the 41, and a function as a sliding part formed with a small friction coefficient on the surface side at least in contact with the support member 52, The required length of the hose protector 53 is determined by the length of expansion and contraction of the slack portion of the hydraulic rubber hose 41 due to the movement of the working device 14 shown in FIG.

As shown in FIG. 2, this hose protector
53 is a spiral-shaped main body 54 attached to the outer peripheral surface of the hydraulic rubber hose 41 and fastened by its own tightening force. One end of the main body 54 located in the radial direction is formed in a spiral shape. A hose insertion portion 55 is provided between the portion 54a and the other end portion 54b so as to be able to expand and contract. The hose insertion portion 55 is formed so that the hydraulic rubber hose 41 can be inserted into a hollow portion 56 in the main body portion 54 from the hose insertion portion 55. I have.

As shown in FIG. 3, this hose protector
53 is a sliding surface side layer portion 57 formed of a material having a small friction coefficient on the outside in contact with the support member 52, and a hose contact surface side layer formed of a material having a large friction coefficient on the inside in contact with the outer peripheral surface of the hose. Core layer portion 59 provided between the sliding surface side layer portion 57 and the hose contact surface side layer portion 58 and provided with the hose contact surface side layer portion 58 inside to apply a tightening force to the hydraulic rubber hose 41. Are integrally formed.

The sliding surface side layer portion 57 is formed of, for example, polytetrafluoroethylene (PTFE), the hose contact surface side layer portion 58 is formed of, for example, rubber (rubber), and the core material layer portion 59 is formed of, for example, rubber. For example, it is formed by a leaf spring or the like.

The sliding surface side layer portion 57 and the core material layer portion 59 of the hose protector 53 are colored with different colors, particularly, colors that stand out from each other.

Next, the operation of the illustrated embodiment will be described.

The main body 54 of the hose protector 53 is connected to the hydraulic rubber hose 41 such that the hydraulic rubber hose 41 is relatively inserted into the hollow portion 56 from the hose insertion portion 55 of the hose protector 53 formed in a spiral shape. Fits a part of the outer peripheral surface.

As described above, the hose protector 53 is
The hose can be fitted to the outer peripheral surface of the hydraulic rubber hose 41 attached to the hose 51 from the hose insertion portion 55, and can be fastened by the fastening force of the main body 54 without using any special fastening means.

When the hose protector 53 is fitted to the hydraulic rubber hose 41 in a state where the hydraulic rubber hose 41 is pulled to one side in the length direction when the hose protector 53 is attached, the hose protector 53 is thereafter inserted. Can be easily shifted together with the hydraulic rubber hose 41 into the support member 52.

On the inner surface side of the hose protector 53, the inner hose contact surface layer having a very large friction coefficient is formed by the tightening force of the core layer 59 for maintaining the spiral wound state.
Similarly, the hose protector 53 is firmly fixed to a part of the hydraulic rubber hose 41 by a frictional force, because the rubber rubber 58 is similarly pressed against the surface rubber surface of the hydraulic rubber hose 41 having a large friction coefficient.

On the other hand, the surface side of the hose protector 53 is in contact with the support member 52 by the sliding surface side layer portion 57 made of a material having an extremely small friction coefficient.
Can be smoothly slid.

That is, the hose protector 53 is provided with a core material layer 59.
The inner hose contact surface side layer portion 58 is brought into close contact with the hose outer peripheral surface by the tightening force, and the contact surfaces are united by the frictional force based on the tightening force, and the surface side friction coefficient is reduced. The sliding surface side layer portion 57 enables the hydraulic rubber hose 41 to smoothly slide on the support member 52.

Thus, the support member 52 of the support base material 51
Hydraulic rubber hose arranged along the supporting base material 51 via a hose protector 53 functioning as a sliding part for
Since the support member 52 is movably supported by the support member 52 so as to be slidable, for example, the movable parts (for example, the first boom 21 and the second boom 23 shown in FIG. , Between the second boom 23 and the third boom 25, and between the third boom 25 and the arm 27). The rubber hose 41 can move freely in its length direction and the like, and the expansion and contraction action at the slackened portion of the hydraulic rubber hose 41 also acts on other parts of the hydraulic rubber hose 41, and the hose length generated at that time Fluctuation of hydraulic rubber hose
Absorbed by 41 overall movements.

When the wear of the sliding surface side layer portion 57 of the hose protective body 53 progresses and reaches the limit, a color of the core material layer portion 59 different from that of the sliding surface side layer portion 57 appears. When the color of 59 is visually identified, the hose protector 53 is replaced with a new one.

The replacement of the hose protector 53 is performed by moving the hose protector 53 to the outside of the support member 52 and forcibly opening the hose insertion portion 55 of the spirally formed main body 54 while the hose protector 53 is being opened. By detaching only the hose protector 53 from the outer peripheral surface of the hose and mounting the new spiral-shaped hose protector 53 as described above, the hose protector 53 can be easily attached without removing the hydraulic rubber hose 41 from the supporting base material 51. Can be.

Next, the effects of the hose protector 53 will be listed.

As described above, in the routing in which the hydraulic rubber hose 41 is provided in the working device 14 having many movable parts, fluctuations in the hose length of the hydraulic rubber hose 41 can be smoothly absorbed, so that the routing is appropriate. This greatly expands the flexibility of the hydraulic rubber hose routing design.

Further, since the fatigue of the material does not concentrate on a local portion (slack portion) of the hydraulic rubber hose 41, it is possible to prevent a breakage accident due to abrasion, expansion, contraction and torsion, and to greatly extend the life of the hydraulic rubber hose 41. Can be.

Furthermore, the hose protector 53 can be partially attached to the hydraulic rubber hose 41, eliminating the need for providing a large-sized structure such as a conventional guard cover, and simplifying the structure.
Cost can be reduced.

In addition, since the hose protector 53 is easy to install and remove, it can be easily retrofitted and replaced.

Also, only the hose protector 53 needs to be replaced.
Since there is no need to replace the entire hose, there is no risk of oil leakage or spillage, the replacement work can be performed easily, and the environment is also friendly.

Further, a core material layer 59 different from the sliding surface side layer 57 is provided.
The replacement time of the hose protector 53 can be visually discriminated by the color of, and the maintenance property is good.

Furthermore, the spiral-shaped hose protector 53 is flexible with respect to the hose diameter, and can be attached to the hydraulic rubber hose 41 having an arbitrary thickness within a certain range.

The hose protector 53 has one end 54a.
The other end 54b is formed in a spiral shape that is radially opposed via a hose insertion portion 55 that can be expanded and contracted. However, the hose protector 53 is not limited to this spiral shape. One end 54a and the other end 54 of the body 53
Even if b has a shape facing the circumferential direction via the expandable and contractable hose insertion portion 55, it is effective for a constant hose diameter.

[0058]

According to the first aspect of the present invention, the hose disposed along the supporting base material can be smoothly slid with respect to the supporting member by the hose protector, so that the entire hose is formed. By allowing the hose to move freely, fluctuations in the length of the hose, which also affects other parts of the hose due to expansion and contraction of the hose slack, can be absorbed by the movement of the entire hose. Accidental damage due to torsion can be prevented, and the life of the hose can be extended.

According to the second aspect of the present invention, the hose is supported by the supporting member of the supporting base material via the hose protector so that the hose can slide smoothly. By allowing the hose to move freely at any part, the fluctuation of the hose length acting on the hose at the movable part can be absorbed by the movement of the whole hose. Accordingly, in the routing of the hose in the device having the movable portion, the force applied to the hose can be smoothly absorbed, so that the routing becomes appropriate and the degree of freedom of the routing design can be expanded.

According to the third aspect of the present invention, the main body of the hose protector fitted to the hose from the hose insertion portion can be attached to the outer peripheral surface of the hose by its own tightening force without using any special fastening means. Since the hose protector can be fixed to a part of the hose, the hose protector can be easily attached to and detached from the hose without removing the hose from the supporting base material, and the workability required for mounting and replacement can be improved. Further, since the hose protector can be partially attached and detached only to a necessary portion of the hose, an inexpensive hose arranging device can be provided. Further, since there is no need to remove the hose, there is no risk of oil leaking or flowing out of the hose, and it is possible to provide an environment-friendly hose installation device.

According to the fourth aspect of the invention, the smooth sliding of the hose with respect to the support member can be ensured by the sliding surface side layer portion on the front surface side, so that the hose can be prevented from being worn and damaged, and the core material layer portion can be tightened. The inner hose contact surface side layer is brought into close contact with the hose outer peripheral surface by the applied force, and the contact surface can be integrated by the frictional force based on its own tightening force, and special fixing means must be installed or operated Installation and removal are simple, so retrofitting and replacement can be facilitated.

According to the fifth aspect of the invention, the hose protector formed in a spiral shape can be partially detached only at a necessary portion of the hose without removing the hose, thereby reducing the workability required for mounting and replacement. It can be improved, is flexible with respect to the hose diameter, and has general versatility that can be attached to a hose of any thickness.

According to the sixth aspect of the present invention, since the sliding surface side layer portion and the core material layer portion are colored in different colors, when the wear of the sliding surface side layer portion reaches a limit, the sliding surface side layer portion is colored. The replacement time can be visually judged by the color of the heartwood layer different from the
Good maintainability can be secured.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of a hose disposing method and a hose disposing device according to the present invention.

FIG. 2 is a perspective view showing one embodiment of a hose protector according to the present invention.

FIG. 3 is a sectional view taken along line III-III in FIG. 2;

FIG. 4 is a front view of a hydraulic excavator having an example of an offset boom to which the present invention is applied.

FIG. 5 is a perspective view of an offset boom showing an example of a conventional hose arrangement method.

[Explanation of symbols]

 41 Hose 51 Support base material 52 Support member 53 Hose protector 54 Main body 55 Hose insertion part 57 Sliding side layer 58 Hose contact side layer 59 Core layer

Claims (6)

[Claims] 1. A hose arranged along a supporting base material,
A hose disposing method, wherein the hose is movably supported by a support member attached to a support base material via a hose protector mounted on an outer peripheral surface of the hose and having a small friction coefficient on at least the surface side. A supporting member attached to the supporting base material for movably supporting the hose; and a friction coefficient at least on a surface side of the supporting member which is integrally attached to the hose inside the supporting member and in contact with the supporting member. A hose arranging device comprising a hose protector. 3. The hose protector according to claim 2, wherein the hose protector includes a main body portion that is fastened to the hose by its own tightening force, and a hose insertion portion provided in the main body portion. Hose arrangement device. 4. A sliding surface side layer portion made of a material having a small coefficient of friction in contact with the support member, a hose contact surface side layer portion formed of a material having a large coefficient of friction in contact with the outer peripheral surface of the hose, and a hose. A core material layer portion for applying a tightening force to the hose with the contact surface side layer portion inside, and a hose protection body characterized by comprising: 5. The hose protector according to claim 4, wherein the sliding surface side layer portion, the hose contact surface side layer portion and the core material layer portion are integrally formed in a spiral shape. 6. The hose protector according to claim 4, wherein the sliding surface side layer portion and the core material layer portion are colored in different colors.