JPH072580B2 - Device for holding and suspending long objects - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for gripping and suspending a long object such as a high-voltage power line, which is capable of suspending and carrying a heavy object such as a high-voltage power cable or a cable from its outer surface toward an axis.

[0002]

2. Description of the Related Art Conventionally, as a gripping device of this type, for example, a link piece is pivotally mounted between the upper and lower outer pivot ears of a bilaterally symmetrical vertical gripper having parallel concave inner surfaces and a frame. There is a device that closes the gripper by upward movement and grips a long object.

[0003]

However, in the conventional gripping device as described above, the link pieces pivotally installed at four positions on the left, right, upper and lower sides of the fixed frame and two positions on the upper and lower sides of the left and right grippers are simply rectangular. Since the left and right ends are pivotally attached to the top and bottom of the left and right grippers and the top and bottom of the fixed frame respectively at one point, there is no boosting lever action on the link piece, and a heavy member is gripped by the gripper and this member is held. Since the gripping force of the left and right grippers is weak when lifted up, the friction gripping force between the gripper and the long object cannot withstand a sufficient weight, and it can only be used for gripping displacement of lightweight members. There was a problem.

Also, since the long object is directly gripped and moved by the inner surface of the cylindrical half-shaped arc-shaped gripper, various kinds of grippers having an inner surface matching the diameter of the long object are required.
There is a second problem that the selective use is complicated and the cost is disadvantageous.

In order to eliminate the above-mentioned problems, the present invention suspends the left and right grippers for holding a long object from the left and right frames with double-sided frames, which also serve as weights, through flat triangular link pieces. An object of the present invention is to make the link piece usable as a booster lever by connecting it to a lowering rod, and to increase the tightening force of the left and right grippers for a long object by the weight of the left and right frames.

[0006]

[Means for Solving the Problems] Link pieces are pivotally mounted between the upper and lower outer pivot ears of a vertically-symmetrical gripper that is parallel and opposed to each other and a frame, and the gripper is closed by the upward movement of the frame to extend the length. In constructing a device for gripping an object , a pair of vertically elongated grippers, which have a pair of left and right suspension rods and a frame that also serves as a weight that makes a pair of substantially U-shaped planes, are placed between them to enclose the pair from the left and right . The suspension rods have three pivot pins at the upper and lower parts of the suspension rod.
Provided link piece oblong triangular shape in the vicinity of the outer apex of its
The left and right frames are vertically supported by the lower and lower pivot pins provided near the apexes on the inner short sides of these link pieces. The pieces are symmetrically pivotally supported, and the upper and lower pivot ears of the gripper are pivotally supported symmetrically on the pivot pins on each link piece .
By respectively inserting the pivot shaft into a vertical bore which is Toru設to pivot支突piece before and after on opposite contacts near the left and right frames, enclose the left and right grippers with the right and left pair of frame
I was able to achieve it by going in and maintaining contact .

The opposing inner surface of the gripper may be a hard rubber concave inner surface.

[0008]

[Operation] When the left and right suspension rods are lifted by a winch rope or the like via hooks, the left and right link pieces are first struck by the gravity of the left and right weight / frames, and the outside of these link pieces is centered around the pivot pin. Since it rotates in the direction of upward movement, the vertically long left and right grippers that pivotally support the upper and lower pivot ears on the pivot pins of all link pieces are strong in the direction of strongly sandwiching a long object existing between them. Since it is closed to the left, it is possible to suspend and lift the long object between the left and right grippers together with the frame and the like without slipping.

The tightening force applied to the long object to the gripper is such that the longer the object, the grip and the frame are, the larger the dimension between the left and right pivot pins of the link piece, and the short side pivot pin of the link piece. The smaller the space dimension, the greater the gripper tightening force, and all link pieces exert a boosting action with respect to the weight of the left and right frames. Can be lowered.

Further, when only the long object is moved upward while the hanging rod is positioned and fixed, or when the hanging rod is lowered while the long object is fixed, the left and right grippers are respectively relative to the long object. The left and right grippers slightly move up due to the frictional force, and all the link pieces rotate slightly in the opposite direction to when the long object is suspended and lifted, and the gripper opens slightly and the inner surface and the long object are slightly opened. Since the friction with the outer surface is greatly reduced, it is possible to raise only the long object or to lower the gripper while the long object is oriented.

At this time, when the long object suddenly descends or the gripper rises, the left and right grippers are immediately closed by the sliding contact frictional force of the inner surface of the gripper against the long object as in the case of the suspension. Hold objects firmly.

By pulling out the pivot shaft from one of the front and rear pivot projections of the left and right frames, the pivot shaft in the vertical hole of the other pivot projection becomes the pivot between the left and right frames, The left and right frames can be opened and closed together with the gripper around the support shaft.

[0013]

EXAMPLES Examples will be described with reference to the drawings. Previously <br/> not a basic configuration of the invention, as shown in each figure of FIGS. 1-4, the outer vertical pivot支耳the frame of elongated gripper symmetrical with parallel facing the弯凹inner surface As shown in FIGS. 3 and 4, a pair of left and right suspensions are used to construct a device in which link pieces are pivotally attached between views, respectively a pair of vertical <br/> length gripper 3,3 plane weight combined frames 2 of substantially a pair of U-shaped and disposed between these, such as in Figure 4 between the rod 1, 1 3 And as shown in FIG. 4, they are arranged so as to face each other by enclosing them from the left and right.

[0014] Then, the top and bottom of the hanging rod 1, 1 each
In part, each having a three pivot pin P1, P2, P3
The vicinity of each of the outer apex of its an oblong triangle-shaped link piece 4,4 that
As shown in FIG. 3 , the pivot pins P1 and P1 provided at the left and right sides are symmetrically pivotally supported, and the pivot pins P2 and P3 provided near the apexes of the upper and lower inner short sides of the link pieces 4 and 4 respectively. of the upper and lower pivoting members 2a of pivot pin P2, P2 the left and right frame 2,2 below the 2a pivoted symmetrically, and each Li
The upper and lower pivot ears 3a, 3a of the grippers 3, 3 are pivotally supported symmetrically as shown in FIGS. 1 and 3 on pivot pins P3, P3 on the link pieces 4, 4 .

Further, the point of contact of said left and right frames 2
By respectively inserted as shown before and after pivoting支突piece 2b provided near vertical hole 2c that Toru設to 2b, the pivot shaft 5 in 2c in FIG. 1 and FIG. 6, the pair of right and left frames 2 ，
2 as shown in each of FIGS. 1 to 4 ,
The grippers and hangers of the long object according to the present invention are constructed by enclosing the rippers 3 and 3 and keeping them in contact with each other.

Further, as shown in FIGS. 1, 4 and 7, the inner surfaces of the grippers 3, 3 facing each other are made of a hard rubber concave surface 3
It may be b.

1 and 2, reference numeral 1a is a left and right suspension auxiliary member, the lower part of which is connected to the upper parts of the left and right suspension rods 1 and 1, respectively.
Further, the upper part of the suspending auxiliary member 1a is collectively connected to the lower part of the suspending hook 1b, and a winch wire W is further connected to the upper part of the suspending hook 1b.

Each of the above-mentioned members is molded with a tough material such as iron.

The structure of the present invention is as described above. Next, a specific example of using this will be described in detail. First, the rear pivot shaft 5 of the front and rear pivot projections 2b, 2b of the left and right frames 2, 2 is pushed down against the elastic force of the spring 5a as shown by the chain line in FIG. Moving piece 5b is its axis
The pivot shaft 5 can be pulled out through the state shown in FIG. 5 by turning 90 degrees about 5c and standing upright.

Then, the vertical hole 2c of the front pivoting protrusion 2b is formed.
The inner pivot shaft 5 serves as a pivot shaft between the left and right frames 2 and 2, and as shown in FIG.
2 can be opened with grippers 3,3.

Then, the inner surface of the pivotal support piece 2b is brought close to a long object a such as a vertically arranged high voltage power cable as shown in FIG. 7 so that the left and right frames 2,2 are pivoted together with the grippers 3,3.
By pivoting in the closing direction about 5 as a center, the one pivot supporting piece 2b, 2b can be inserted into each other as shown in FIGS. 1 and 3 to 5, and their vertical holes 2c, 2c.
By dropping the pivot shaft 5 as shown in FIG. 6 through the state of FIG. 5, the left and right frames 2, 2 can be maintained in contact with each other as shown in FIGS. 1 and 3.

Next, hook the left and right suspension rods 1 and 1
When the winch rope W is lifted through b or the like as shown in FIGS. 1 and 2, first, the left and right frame 2, which also serves as a weight,
Due to the gravity of 2, the upper, lower, left, and right link pieces 4, 4 move upward from the open state shown in FIG. 3 around the pivot pins P2, P2, respectively, as shown in FIGS. 3 and 8. 1 and 4 and the vertically long left and right grippers 3 and 3 pivotally supporting the upper and lower pivot ears 3a and 3a on the pivot pins P3 and P3 of all the link pieces 4 and 4, respectively. As shown in FIG. 8, since the long object a existing between them is strongly closed in the direction in which the long object a is strongly sandwiched, the long object a is not slipped and the grippers 3 and 3 are used together with the frames 2 and 2 as shown in FIG. It can be suspended and raised as shown in FIG.

The tightening force F applied to the long object a applied to the grippers 3, 3 is g 1 kg of the weight of the long object a,
The weight of the left and right grippers 3,3 is g2 kilograms, the weight of the left and right frames 2,2 also serving as weights is g3 kilograms, and the dimension between the pivot pins P1 and P2 is d1 as shown in FIG.
, And the dimension between the pivot pins P2 and P3 is d2, F = g1
+ G2 + g3 · d1 / d2 (kilogram)

Accordingly, the heavier the elongated object a, the grippers 3,3 and the frames 2,2, and the larger the dimension d1 and the smaller d2, the greater the gripper tightening force F becomes. By setting d2 to d1> d2, all the link pieces 4,4 exert a boosting lever action with respect to the weights of the left and right frames 2,2, and even a heavy long object a does not slip, as shown in FIGS. 1 and 3. With gripper 3,3
It can be hung by kicking.

When only the long object a is moved upward while the hanging rods 1 and 1 are suspended and positioned as shown in FIG. 3, or the hanging rods 1 and 1 are lowered while the long object is fixed. The left and right grippers slightly move up due to the relative frictional forces of the left and right grippers 3,3 with respect to the long object a, and the link pieces 4,4 are all in the opposite direction to the lifting of the long object a. That is, since the grippers 3 and 3 are slightly opened in the opening direction shown in FIG. 8 and the friction between the inner surface of the grippers 3 and 3 and the outer surface of the long object a is greatly reduced, only the long object a is raised. Alternatively, the grippers 3 and 3 can be lowered while the long object is oriented.

At this time, the long object a suddenly descends,
When the grippers 3,3 suddenly rise, the sliding contact frictional force of the inner surface of the gripper against the long object a immediately closes the left and right grippers 3,3 as in the case of the suspension, so that the long object a is shown in FIG. Grasp strongly like No. 4.

Next, in order to remove the grippers 3, 3 from the elongated object a, the rear pivot shaft 5 is pulled out as shown in FIG. 5 in the same manner as when the frames 2, 2 are opened, and the front pivot shaft 5 is pulled out. The shaft 5 serves as a pivot for the left and right frames 2,2 so that the frames 2,2 can be opened together with the grippers 3,3 as shown in FIG. 7, and the grippers 3,3 can be removed from the elongated object a.

It is to be noted that by disposing two or more main holding devices above and below the long object a, fixing one of the left and right rods thereof, and vertically moving the other suspension rod 1, 1, a rises.

[0029]

Since the present invention is constructed as described above, it has the following effects. In particular, the pair of left and right frames 2 and 2 according to the present invention have the first effect that the cost for the mold can be halved as compared with the left and right variants so that the cost is advantageous.

Further, the tightening force applied to the long object a applied to the grippers 3,3 is the long object a, the grippers 3,3 and the frames 2,2.
And the larger the distance between the left and right pivot pins of the link piece, and the smaller the dimension between the short side pivot pins of the link pieces, the larger the gripper tightening force F, and all the link pieces. Has the second effect that it exerts a boosting action with respect to the weight of the left and right frames, and even a long heavy object a can be gripped by the grippers 3 and 3 and can be hung and carried without slipping.

Further, when only the long object a is moved upward while the hanging rods 1 and 1 are suspended and positioned, or when the hanging rods 1 and 1 are moved down while the long object a is fixed, the long objects a are respectively moved. The left and right grippers slightly move up due to the relative frictional force of the left and right grippers 3,3 with respect to the length a, and all the link pieces 4,4 rotate slightly in the direction opposite to the direction when the long a is suspended. The grippers 3 and 3 are opened slightly and the friction between the inner surface and the outer surface of the long object a is greatly reduced. Therefore, only the long object a is lifted or the gripper 3, while keeping the long object orientation. There is also a third effect that the range can be expanded and the versatility is large, as 3 can be lowered.

The long object a suddenly descends or the grippers 3, 3
Is raised, the sliding contact frictional force of the inner surface of the gripper against the long object a immediately closes the left and right grippers 3 and 3 similarly to the case of hanging, and strongly grips the long object a, which is safe for work. There is also a fourth effect.

Further, by pulling out the pivot shaft 5 from one of the front and rear pivot projection pieces 2b, 2b of the left and right frames 2, 2, the pivot shafts in the vertical holes 2c of the other pivot projection piece 2b. 5 serves as a pivot between the left and right frames 2 and 2, and the left and right frames 2 and 2 can be opened and closed together with the grippers 3 and 3 around the pivot 5, thus facilitating gripping and releasing the long object a. There is also a fifth effect that can be realized.

It is to be noted that by arranging two or more holding devices above and below the long object a, fixing one of the left and right rods, and vertically moving the other suspension rod 1, 1, Since "a" is raised, the long object "a" can be raised by a simple operation, and there is a sixth effect that it is possible to work safely even at a high place.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a rear perspective view of the above.

FIG. 3 is an elevation view of the main part of the device.

FIG. 4 is an enlarged cross-sectional view taken along the broken line in FIG.

FIG. 5 is an enlarged cross-sectional view of an essential part in the middle of inserting the pivot shaft into the pivot protrusion.

FIG. 6 is an enlarged cross-sectional view of a main part in a state where a pivot shaft is inserted into a pivot projection piece.

FIG. 7 is a schematic plan view with the frame opened.

FIG. 8 is an elevation view in a state different from that of FIG.

FIG. 9 is an elevation view in a state different from that of FIG.

[Explanation of symbols]

 1 Suspension rod 2 Frame 2a Pivot piece 2b Pivot piece 2c Vertical hole 3 Gripper 3a Pivot ear 4 Link piece 5 Pivot shaft P1, P2, P3 Pivot pin

Claims (2)

[Claims] 1. A link piece is pivotally mounted between the upper and lower outer pivot ears of a vertically symmetrical left and right gripper that faces in parallel and a frame, and the gripper is closed by the upward movement of the frame to grip a long object. in the device, encloses a pair of elongated gripper 3,3 frames 2,2 of the weight serves disposed between these paired planes substantially U-shape between the left and right pair of hanging rods 1,1 of the left and right The suspension rods 1 and 3 are arranged so as to face each other, and three pivot support pins are respectively provided on the upper and lower parts of the suspension rods 1 and 1.
Emissions P1, P2, pivot pin provided with a link piece 4,4 oblong triangular shape in the vicinity of the outer apex of its having a P3 P1, P1
And the left and right frames are attached to the lower pivot pins P2 and P2 of the pivot pins P2 and P3 provided near the apexes on the inner short sides of the link pieces 4 and 4, respectively. The upper and lower pivot support pieces 2a, 2a of 2, 2 are pivotally supported symmetrically,
Further, the upper and lower pivot ears 3a, 3a of the grippers 3, 3 are bilaterally and symmetrically supported by the pivot pins P3, P3 on the link pieces 4, 4, respectively . Near contact
Longitudinal hole 2 that is provided transparently on the front and rear pivot support projections 2b, 2b provided nearby
By inserting the pivot shafts 5 into c and 2c respectively , the pair of left and right frames 2 and 2 are connected to the left and right grippers 3 and 3, respectively.
A device for holding and suspending long objects by enclosing and maintaining contact with each other. 2. The apparatus for gripping and suspending a long object according to claim 1, wherein the opposing inner surfaces of the grippers 3, 3 are hard rubber concave inner surfaces.