JPH05246681A - Holding suspention device for long article - Google Patents

Abstract

PURPOSE:To increase the tightening force of the left and right grippers for a long article by connecting the outsides of the left and right grippers with a frame and a suspending rod through a link piece and utilizing the link piece as a boosting lever. CONSTITUTION:The vicinity of the outside top points of the flat shaped link pieces 4 and 4 are pivotally supported on the upper and lower pivotal supporting pins P1 and P1 of the suspending rods 1 and 1, and the upper and lower pivotal supporting pieces 2a and 2a of the left and right frames 2 and 2 are pivotally supported in lateral symmetry on the lower pivotal supporting pins P2 and P2 among the pivotal supporting pins P2 and P3 in the vicinity of the upper and lower top points on the short side of the inside of the link pieces 4 and 4. Further, the upper and lower pivotal supporting ears 3a and 3a of grippers 3, 3 are pivotally supported in lateral symmetry on the upper pivotal supporting pins P3 and P3, and each pivotal supporting shaft 5 is inserted into the longitudinal holes 2c and 2c formed on the front and rear pivotal supporting projection pieces 2b and 2b of the left and right frames 2 and 2, and then the front and rear frames 2 and 2 in pair are kept in opposed state.

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 strongly gripping and carrying a cable or the like from its outer surface toward an axis line.

[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 vertically symmetrical symmetrical gripper having parallel concave and concave inner surfaces and a frame. There is a device that closes the gripper by upward movement and holds a long object.

[0003]

However, in the conventional gripping device as described above, the link pieces pivotally mounted 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 to secure this member. Since the gripping force between the left and right grippers is weak when lifted upward, 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.

Further, since the long object is directly grasped and moved by the inner surface of the cylindrical half-shaped arc-shaped gripper, various kinds of grippers having the 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 hangs the left and right grippers for holding a long object from the left and right frames with double-sided frames that also function as weights via flat and substantially triangular link pieces. By connecting the link piece to the lowering rod, the link piece can be used as a lever for increasing the force, and the tightening force of the left and right grippers with respect to a long object is increased by the weight of the left and right frames.

[0006]

DISCLOSURE OF THE INVENTION The above-mentioned object of the present invention is to pivotally attach link pieces between the outer upper and lower pivot ears of a horizontally-opposite symmetrical gripper parallel to each other and a frame,
In constructing the device for closing the gripper by the upward movement of the frame to hold the long object, the pair of left and right suspension rods and the weights forming a pair of substantially U-shaped planes are sequentially provided from the outside to the inside. A frame and a pair of vertically elongated grippers are arranged symmetrically in parallel with each other, and the upper and lower pivot pins of the suspension rod are symmetrically pivoted around the outer apexes of the flat link pieces. The upper and lower pivot support pieces of the left and right frames are symmetrically pivotally supported on the lower pivot support pins of the pivot support pins near the respective apexes on the upper and lower sides of the inner short side of each link piece, and further on the upper support pin. The upper and lower pivot ears of the gripper are pivotally supported symmetrically, and the left and right pair of left and right frames are inserted by inserting the pivot shafts into the vertical holes formed in the front and rear pivot support projections of the left and right frames, respectively. Achieved by keeping the frames facing each other That.

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 a hook or the like, first, the gravity of the left and right frames also serves as the upper, lower, left, and right link pieces, respectively, with respect to the outside of these link pieces centering on the pivot pin The vertical left and right grippers that pivotally support the upper and lower pivot ears on the pivot pins of all the link pieces are powerful in the direction of strongly sandwiching a long object between them. Since it is closed to the left, it is possible to hang it up with the frame and the like with the gripper without slipping the long object between the left and right grippers.

The tightening force applied to the elongated object to the gripper is such that the heavier the elongated object, the grip and the frame, 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 the link pieces exert a leverage lever action with respect to the weight of the left and right frames, and even a long and heavy object can be gripped and hung by the grip without slipping. Can be lowered.

Further, when only the long object is moved upward while the hanging rod is being positioned, or when the hanging rod is moved down while the long object is fixed, the left and right grippers are relative to the long object respectively. The left and right grippers slightly move up due to the frictional force, and all the link pieces rotate slightly in the direction opposite to the direction in which the long object is suspended and lifted, and the gripper opens slightly and its inner surface and the long object 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 due to the sliding 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. First, as shown in each of FIGS. 1 to 4, the basic structure of the present invention is such that a link piece is provided between the upper and lower pivot ears and a frame of a symmetrical symmetrical vertical gripper having parallel concave-concave inner surfaces. In constructing a device for pivotally attaching and gripping a long object by closing the gripper by the upward movement of the frame, a pair of left and right suspensions are sequentially hung from outside to inside as shown in FIGS. 3 and 4. As shown in FIGS. 3 and 4, the rods 1 and 1, the frame 2 and 2 which also serves as a weight and which forms a pair of substantially U-shaped planes as shown in FIG. 4, and the pair of vertically elongated grippers 3 and 3 are symmetrical as shown in FIGS. 3 and 4, respectively. Parallel to.

The upper and lower pivot pins P1 and P1 of the suspension rods 1 and 1 are bilaterally symmetrically pivoted around the outer apexes of the flat triangular link pieces 4 and 4, respectively, as shown in FIG.
Further, the lower and upper pivot pins P2, P2 among the pivot pins P2, P3 near the respective apexes on the upper and lower sides of the inner short sides of the respective link pieces 4, 4 are connected to the upper and lower pivot pieces 2a of the left and right frames 2, 2. , 2a are symmetrically supported, and the upper and lower pivot ears 3a, 3a of the grippers 3, 3 are further symmetrically supported by the upper pivot pins P3, P3 as shown in FIGS.

Further, as shown in FIGS. 1 and 6, the pivot shafts 5 are inserted into the vertical holes 2c, 2c formed through the front and rear pivot support projections 2b, 2b of the left and right frames 2, 2 respectively. Thus, the pair of left and right frames 2 and 2 are maintained in contact with each other as shown in each of FIGS. 1 to 4 to form the apparatus for gripping and suspending a long object according to the present invention.

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, the 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 portion of the suspension assisting member 1a is collectively connected to the lower portion of the suspension hook 1b, and a winch wire W is further coupled to the upper portion of the suspension hook 1b.

The above-mentioned members are 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 of all, 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 it 90 degrees about 5c and standing it 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 pivoting 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 rotating in the direction of closing about 5 as a center, it is possible to insert the one of the pivotal support pieces 2b, 2b into each other as shown in FIGS. 1 and 3 to 5, and to insert the vertical holes 2c, 2c thereof.
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 used to raise it as shown in FIG. 1 and FIG.
By 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, 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, the long object a existing between them is strongly closed in the direction in which the long object a is strongly sandwiched. Therefore, without slipping the long object a, the grippers 3 and 3 together with the frames 2 and 2 and the like 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 weights of the left and right grippers 3,3 are g2 kilograms, the weights of the left and right frames 2,2 also serving as weights are g3 kilograms, and the dimension between the pivot pins P1, 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)

Therefore, the heavier the length a, the grippers 3,3 and the frames 2,2, and the larger the dimension d1 and the smaller the dimension d2, the greater the gripper tightening force F. 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, as shown in FIG. 1 and FIG. 3 without slipping even a long heavy object a. With gripper 3,3
It can be hung with a kick grip.

In the case where 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 with the long object 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 all the link pieces 4,4 are 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 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 with the long object positioned.

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

Next, in order to remove the grippers 3, 3 from the long 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 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 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, a rises.

[0029]

Since the present invention is configured as described above, it has the following effects. In particular, the pair of left and right frames 2 and 2 of the present invention have the first effect that the right and left of the same mold can be obtained, and the cost for the mold can be halved as compared with the left and right variants, which is advantageous in terms of cost.

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 pieces, 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 held by being gripped by the grippers 3 and 3 without slipping and carried.

Further, when only the long object a is moved upward while the suspension rods 1 and 1 are suspended and positioned, or when the suspension rods 1 and 1 are lowered while the long object a is fixed, the long rods a and b are respectively lengthened. 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, so that all the link pieces 4,4 rotate slightly in the opposite direction to the lifting and lifting of the long length a. 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 significantly 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 left and right grippers 3 and 3 are closed immediately by the sliding frictional force of the inner surface of the gripper with respect to the long object a to strongly grip 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 projections 2b, 2b of the left and right frames 2, 2, the pivot shafts in the vertical holes 2c of the other pivot projections 2b are extracted. 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 disposing two or more main holding devices above and below the long object a, fixing one of the left and right rods, and vertically moving the other one hanging rod 1,1 Since "a" rises, 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 sectional view taken along the line of 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 in a pivot projection

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 Hanging rod 2 Frame 2a Pivot piece 2b Pivot protrusion 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 horizontally-symmetrical vertically-long 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, from the outside to the inside, a pair of left and right suspension rods 1 and 1 and a frame 2 and 2 also serving as a weight and a pair of vertically-shaped grippers 3 and 3 that form a pair of substantially U-shaped planes are provided, respectively. The link rods are arranged symmetrically in parallel, and the upper and lower pivot pins P1 and P1 of the hanging rods 1 and 1 are pivotally supported symmetrically around the outer vertices of the flat link pieces 4 and 4, respectively. The upper and lower pivot support pieces 2 of the left and right frames 2 and 2 are attached to the lower pivot support pins P2 and P2 of the pivot support pins P2 and P3 near the respective apexes above and below the inner short sides of the pieces 4 and 4.
a and 2a are supported symmetrically, and the upper support pins P3 and P
The upper and lower pivot ears 3a and 3a of the grippers 3 and 3 are symmetrically pivotally supported by 3 and the vertical holes 2c are provided on the front and rear pivot support projections 2b and 2b of the left and right frames 2 and 2, respectively. A holding and suspending device for a long object, in which the pair of left and right frames 2 and 2 are kept in contact with each other by inserting the pivotal shafts 5 into the insides of 2 and 2c. 2. The apparatus for gripping and suspending a long object according to claim 1, wherein the opposed inner surfaces of the grippers 3, 3 are hard rubber concave inner surfaces.