JPH0423899Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] This invention is useful when moving a straight long object such as a straight buried pipe and aligning and connecting it with another long object. The invention relates to a catching device used for.

[Conventional technology] When laying cable pipes etc. underground for storing telephone cables, a hydraulic excavator is used to dig a narrow and deep groove, and the pipes are laid one by one while being centered within the excavated groove. become.

The conventional pipe laying work will be explained with reference to FIG. 4. A pipe laying work machine 1 is equipped with a telescoping arm 3 which can be raised and lowered freely via a boom 2. A catching device 5 is removably fixed by a pin 4. The structure of the catching device 5 will be described in detail below, but the tube 6 is connected to the catching device 5.
grip it with a hydraulic excavator, and sequentially lay it in a narrow and deep groove 7 that has been excavated in advance with a hydraulic excavator.

As shown in FIG. 5, a conventionally used catching device 5 has a mounting portion 9 integrally provided at the upper end of a vertical support rod 8.
is detachably fixed to the lower end of the telescopic arm 3 by the aforementioned pin 4. At the lower end of the support rod 8, a straight beam 10 is attached to the pin 1.
a tilting cylinder 1 which is pivoted in the horizontal direction by 1 and is installed between the mounting part 9 and the beam 10;
2, the beam 10 can be tilted about the pin 11.

As shown in FIG. 6, the beam 10 is a hollow frame with a continuous opening in the longitudinal direction at the lower part, and on both sides of the lower opening, extending linearly in the longitudinal direction at regular intervals. A pair of guide rails 13 are formed. A screw rod 14 extending in the longitudinal direction of the beam 10 is rotatably provided inside the beam 10 via a bearing 15 (see FIG. 5), and is attached to one end and rotated by a hydraulic motor 16. It's summery.

A movable catching holder 1 is attached to the beam 10.
7 is provided to slide along the guide rail 13, and a boss 18 attached to the upper end of the movable catching holder 17 is threadedly engaged with the screw rod 14 described above.
Catching holder 17 moved by rotation of 4
is adapted to move in the longitudinal direction of the beam 10. A fixed catching holder 19 is fixed to the left end of the beam 10 in FIG.

The lower parts of the movable catching holder 17 and the fixed catching holder 19 have the same structure, and as shown in FIG. It is pivoted so that it can rotate at right angles to the longitudinal direction. Both ends of an opening/closing cylinder 22 are pivotally connected between the upper ends of a pair of catching levers 20 by pins 23, and a curved holder piece 24 is fixed to the lower end of each of the catching levers 20. . When the opening/closing cylinder 22 is contracted, the pair of holder pieces 24 are separated from each other, and when the opening/closing cylinder 22 is expanded, the pair of holder pieces 24 are brought close to each other, so that the tube 6 can be gripped.

The pipes 6 are gripped by the catching device 5 having the above-described structure, and the telescoping arm 3 shown in FIG. 4 is extended to sequentially lay the pipes 6 in the excavated groove 7. In FIG. 5, the pipe 6 on the left is the one that was laid first, and the pipe 6 on the right is the one that will be laid next. A chatting holder 19 fixes the vicinity of the rear end of the pipe 6 laid earlier.
Then, grip the movable catching holder 17 and rotate the screw rod 14 to move the movable catching holder 17 to the left in Fig. 5. , the tip of the next tube 6 is connected to the rear end of the previously laid tube 6 and laid.

[Problems to be solved by the invention] When laying a pipe 6 using the conventional catching device 5, when the movable catching holder 17 grasps the vicinity of the tip of the next pipe 6 when the pipes 6, 6 are connected, the pipe 6
Because of the long length, it is difficult to control the attitude of the next pipe 6, and it is difficult to align the tip of the next pipe 6 with the grounded rear end of the previously laid pipe 6. Gently moving catching holder 1
This has the disadvantage that excessive force is applied to the movable catching holder 17 in an oblique direction, making it difficult to move the movable catching holder 17.

This invention grasps a long object such as a pipe to be laid next in two places, prevents the long object from bending, and makes it easy to align the objects when connecting them. It is an object of the present invention to provide a catching device that prevents excessive force from being applied.

[Means for Solving the Problems] The present invention comprises: a first fixed catching holder which is fixed to one end of a linear beam and grips an object and which is openable and closable; and a first fixed catching holder fixed to the other end of the beam. a second fixed catching holder that can be opened and closed and that grips an object via a roller; and a second fixed catching holder that moves along the beam between the first and second fixed catching holders to grip the object; a movable catching holder that can be opened and closed, and the first and second fixed catching holders and the movable catching holder are arranged on a straight line parallel to the beam. be.

[Operation] The first fixed catching holder grips the long object near the rear end, and the second fixed catching holder and the movable catching holder grip the next long object. Move the mobile catching holder to the first position.
If you move it to the fixed catching holder, you can connect long objects without bending them and keeping their centers aligned.

[Example] Hereinafter, an example of the present invention will be described based on the drawings.

In FIG. 1, reference numeral 30 denotes a catching device according to the embodiment, in which a mounting portion 32 is integrally provided at the upper end of a vertical support rod 31, and this mounting portion 32 is connected by a pin 4, similar to the conventional device. It is designed to be detachably fixed to the lower end of the telescopic arm 3 of the pipe laying work machine 1 (see Fig. 4). At the lower end of the support rod 31, a straight beam 33 is horizontally pivoted by a pin 34, and the mounting portion 3
2 and the beam 33, the beam 33 can be tilted about the pin 34.

As shown in Figures 2 and 3, the beam 33 is a hollow frame with a continuous opening in the longitudinal direction at the lower part, and straight lines in the longitudinal direction are spaced at regular intervals on both sides of the lower opening. A pair of guide rails 36 extending in a shape are formed. A screw rod 37 (see FIGS. 1 and 3) extending in the longitudinal direction of the beam 33 is rotatably provided inside the beam 33, and a hydraulic motor 3 attached to one end is connected to the screw rod 37 (see FIGS. 1 and 3).
It is designed to rotate at 8.

A first fixed catching holder 39 is fixed to the left end of the beam 33 in FIG.
A second fixed catching holder 40 is fixed to the right side of the beam 33 in FIG. Further, a movable catching holder 41 is provided between the first fixed catching holder 39 and the second fixed catching holder 40 so as to slide along the guide rail 36 of the beam 33. A boss 42 attached to the upper end of the movable catching holder 41 is threadedly engaged with a screw rod 37, and as the screw rod 37 rotates, the movable catching holder 41 is moved to the first fixed catching. It is adapted to move in the longitudinal direction of the beam 33 between the holder 39 and a second fixed catching holder 40.

The second fixed catching holder 40
As shown in the figure, a frame body 44 is fixed to the lower ends of the pair of catching levers 43, and a portion near the lower ends of the catching levers 43 is supported by a support shaft 45 against the longitudinal direction of the beam 33. It is pivoted so that it can rotate at right angles. An opening/closing cylinder 4 is located between the upper ends of the pair of catching levers 43.
Both ends of 6 are pivotally connected by pins 47, and a tension spring 48 is attached. A drum-shaped roller 49 is rotatably attached to the frame body 44 by a vertical shaft, and a round bar 50 is welded or chamfered to the opposite ends of the lower part of the frame body 44.
I try to avoid sharp edges. When pressure oil is not supplied to the opening/closing cylinder 46, the catching lever 4 is moved by the force of the tension spring 48.
The upper ends of the rollers 49 will approach each other, and the rollers 49 facing each other will open apart. On the contrary, when pressure oil is supplied to the opening/closing cylinder 46 to extend the opening/closing cylinder 46, the rollers 49 facing each other close together and grip the pipe 6 as the object to be gripped. The second fixed catching holder 40 is provided with a stopper bolt 51, which can be fixed at any position with a lock nut 52 to regulate the closed position of the roller 49. This is to prevent the gripping force of the rollers 49 from becoming excessive and damaging the tube 6 when the tube 6 is a vinyl chloride tube or the like.

The lower parts of the first solid catching holder 39 and the movable catching holder 41 have the same structure, and as shown in FIG. 33 is pivoted so as to rotate at right angles to the longitudinal direction. Between the upper ends of the pair of catching levers 53, both ends of an opening/closing cylinder 55 are pivotally connected by pins 56, and a tension spring 57 is attached. A shaped holder piece 58 is fixed. When no pressure oil is supplied to the opening/closing cylinder 55, the upper ends of the catching levers 53 are brought close to each other by the force of the tension spring 57, and the opposing holder pieces 58 are opened apart. When pressure oil is supplied to the opening/closing cylinder 55 and the opening/closing cylinder 55 is extended, the holder pieces 58 facing each other close together and grip the pipe 6 as the object to be gripped.

The first fixed catching holder 39, the movable catching holder 41, shown in FIG.
The rollers 49 of the second fixed catching holder 40 are arranged on a straight line parallel to the beam 33.

In the above-described catching device 30 of the present invention, a pipe 6 is laid by being fixed by a pin 4 to the lower end of a telescoping arm 3 attached to a pipe-laying working machine 1 shown in FIG. 4, as in the conventional case. In FIG. 1, the pipe 6 on the left is the one that was laid first, and the pipe 6 on the right is the one that will be laid next. The vicinity of the rear end of the previously laid pipe 6 is gripped by the first fixed catching holder 39, and the pipe 6 to be laid next is held on the rollers 49 of the movable catching holder 41 and the second catching holder 40. Twist and grasp. The lower part of the frame 44 of the second fixed catching holder 40
As explained in the figure, since there are no sharp edges using the round bar 50 or the like, the tube 6 will not be damaged when it is gripped.

Next, after the pipe 6 to be laid is gripped by the movable catching holder 41 and the second fixed catching holder 40 by the rollers 49, the screw rod 37 is rotated to move the pipe to the movable catching holder 41.
When the pipe 6 is moved to the left in FIG. The tip of the next pipe 6 is connected to the rear end of the pipe 6 and laid.

The pipe 6 to be laid next is supported at two places, the movable catching holder 41 and the second fixed catching holder 40, so the pipe 6 to be laid next does not bend at the bottom of the beam 33 and maintains its posture. is also correctly controlled, and the first fixed catching holder 3
9. Since the rollers 49 of the movable catching holder 41 and the second fixed catching holder 40 are lined up on a straight line parallel to the beam 33, the centering of the connecting tube 6 can also be performed accurately.

Although the above explanation deals with laying pipes, the catching device of the present invention is applicable not only to pipes, but also to laying pipes.
All of them can be used when long straight objects to be grasped are arranged in a straight line.

[Effects of the invention] In the present invention, the object to be grasped on a straight line can be supported at two locations, the movable catching holder and the second fixed catching holder, and moved in the axial direction. There is no deflection, the posture is correctly controlled, no excessive force is applied to the catching holder or the object to be gripped, and alignment during connection can be performed with high precision.

[Brief explanation of drawings]

Fig. 1 is a longitudinal cross-sectional side view of one embodiment of the present invention;
The figure is an enlarged front view of the second fixed catching holder, Fig. 3 is an enlarged front view of the movable catching holder, Fig. 4 is a side view of the pipe laying work machine, and Fig. 5 is a conventional catching device. FIG. 6 is an enlarged front view of a conventional movable catching holder. 6 is a tube, 33 is a beam, 39 is a first fixed catching holder, 40 is a second fixed catching holder, 41 is a movable catching holder,
49 indicates a roller.

Claims (1)

[Scope of utility model registration request] a first fixed catching holder that is fixed to one end of a linear beam and can be opened and closed to grip an object to be gripped; and a second fixed catching holder that is openable and closable and is fixed to the other end of the beam and grips an object to be gripped via a roller. a movable catching holder that can be opened and closed and moves along the beam between the first and second fixed catching holders to grasp the object to be grasped; A catching device characterized in that first and second fixed catching holders and a movable catching holder are arranged on a straight line parallel to the beam.