JP2513286B2 - Wire winding machine for jacking device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire winder for a jacking device, and more particularly to a wire winder for a jacking device in which a center hole jacking device is provided with a wire winder.

[Conventional technology]

Conventionally, this type of jacking device includes a center hole jacking device as shown in FIG. This center hole jack device
10, head chuck 20, bottom chuck 22, safety chuck 24
And so on.

The center hole jack 10 is composed of a schilling 12 having an inner and outer cylinders and a hollow piston rod 16 connected to a piston 14 slidably interposed between the inner and outer cylinders of the cylinder 12. The oil chambers 10A and 10B are defined by the piston rod 16, and a through hole 10C is formed in the center thereof.

Then, by alternately supplying pressure oil to the oil chambers 10A and 10B, the piston rod 16 repeats extension and contraction.

This center hole jack 10 has a wire through hole 30A
Is fixed to the beam 30 having a frame via a frame 32.

On the other hand, the head chuck 20 is arranged on the piston rod 16, and the bottom chuck 22 and the safety chuck 24 are arranged in the mount 32.

The head chuck 20 has a directional holding force, and chucks the wire 18 and pulls up the wire 18 when moving upward, but when moving downward, the chuck loosens and the wire 18 slides. Further, the lower chuck 22 and the safety chuck 24 also have directionality, and when the wire 18 moves upward, the chuck loosens, and when the wire 18 tries to move downward, it chucks the wire 18 and moves downward. Prevents slippage.

The chucks 20, 22, 24 are provided with chuck release mechanisms 21, 23, 25, respectively.

Wire 18 by the above center hole jacking device
When pulling up the
When 16 is extended upward by hydraulic pressure, the head chuck 20 chucks the wire 18, and the wire 18 having the substantially axial length L of the piston rod 16 is pulled upward. At this time, the chucks of the bottom chuck 22 and the safety chuck 24 are loosened, and the wire 18 can be pulled upward. Then, when the piston rod 16 is contracted downward by hydraulic pressure, the bottom chuck 22 and the safety chuck 24 chuck the wire 18, and the head chuck 20 is loosened, whereby the position of the wire 18 is maintained. The piston rod 16 is housed in the cylinder 12 in the closed state.

By repeating the above operation in sequence, the wire 18 can be pulled upward.

[Problems to be solved by the invention]

However, in the center hole jacking device, the pulled-up wire may be left as it is in the work place and hang down from the work place. For this reason, the space of the work space is narrowed, and the worker is in great danger. In addition, there is a drawback that a large block product, which requires several tens of the above-mentioned devices, cannot be integrally lifted.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a wire winding machine in a jacking device capable of automatically winding a wire drawn by a jacking device with a simple mechanism. And

[Means for solving problems]

In order to achieve the above-mentioned object, the present invention is a jacking device that comprises a jack and a chuck mechanism, draws wires sequentially while repeatedly expanding and contracting the jack, and lifts a suspended load. A winding drum having a wire inlet portion is rotatably disposed, and wire guide means for circulating the wire and sending the wire out of the wire inlet portion into the winding drum is disposed opposite to the wire inlet portion. The wire passing through the jacking device is fixed to the deepest part in the winding drum through the wire guiding means and the wire inlet part, and the force sent out by the wire drawn by the jacking device is utilized. Then, the winding drum is rotated, and the wire is wound in conjunction with the jacking device.

[Action]

According to the present invention, the wire winder is provided substantially above the jacking device. The force of the wire, which is generated when the wire is pulled up by the device, is transmitted to the winding drum through the wire guiding means provided in the wire winding machine, and the winding drum is rotated. by this,
The drawn wire is taken up by the wire winder,
It is no longer left in the workplace.

〔Example〕

Hereinafter, preferred embodiments of a wire winding machine in a jacking device according to the present invention will be described in detail with reference to the accompanying drawings.

1 and 2 are a front view and a side view of a center hole jacking device and a wire winder according to the present invention, and FIG. 3 is a perspective view of the wire winder. The center hole jacking device 10 is as described above, and detailed description thereof is omitted here.

As shown in these drawings, the wire winder 50 is arranged above the center hole jacking device 10,
It mainly comprises a winding drum 52, a wire guide portion 57, and a buckling prevention tube 62.

The winding drum 52 is formed in a cylindrical shape, and has a wire inlet portion 52A opened at one end thereof. Also, at the deepest part of the winding drum 52, a fixture for attaching the tip of the wire 18
56 are provided.

The wire guide portion 57 is composed of a plurality of sheaves 60, 60 ... And a sheave fixing plate 58, and is formed in a sheave fixing plate 58 (two-dot chain line in the figure) into a disk shape, and the wire inlet portion 52 of the winding drum 52.
It is provided so as to face the surface formed by A. A plurality of sheaves 60, 60 ... Are provided on the circumference of the sheave fixing plate 58. A shaft 54 is attached to the center of each of the winding drum 52 and the sheave fixing plate 58, and the shaft 54 has a bearing 55,
It is rotatably supported by 55.

Further, a buckling prevention tube 62 is provided at an intermediate position between the jacking device 10 and the wire guide portion 57 so that the wire 18 does not buckle.

Further, the wire winder 50 is installed at a predetermined position with respect to the center hole jacking device 10, and allows the wire 18 to pass through the center hole jacking device 10 and the buckling prevention tube 62. The wire 18 has an extra length at its tip, and is inscribed in an inscribed circle formed by the guide sheaves 60, 60 to make one round, and further to make one round in the winding drum 52 to make the tip to be a wire fixing tool. Fixed by 56. In this case, the hydraulic system is operated to chuck the safety chuck 24 so that the wire 18 is held so as not to fall from a predetermined position.

Next, the operation of the wire winding machine in the jacking device configured as described above will be described.

First, when the center hole jacking device 10 shown in FIGS. 1, 2 and 4 sequentially draws the wires 18 upward in the drawings, the oil chamber 10A between the inner and outer cylinders of the cylinder 12 is When the piston rod 16 connected to the piston 14 is extended upward by supplying the pressure oil, the head chuck 20 chucks the wire 18. By this operation, the wire for one stroke of approximately the axial length L of the piston rod 16
18 will be pulled up. At this time, the bottom chuck 22 and the safety chuck 24 arranged on the pedestal 32 are loosened due to the directionality of the chucks, and the wire 18 is allowed to move upward.

Then, in order to draw the wire 18 upward again, first, while the piston rod 16 is moved in the upward direction of the substantial axial length L thereof, first, pressure oil is supplied to the hydraulic chamber 10B. When the piston rod 16 is retracted downward, the chucks 22 and 24 chuck the wire 18 and the head chuck 20 loosens. As a result, the piston rod 16 is housed in the cylinder 12 while the position of the wire 18 is maintained.

By repeating the above operation in sequence, the wire 18 can be pulled upward.

On the other hand, the closing / releasing of the wire 18 is controlled by the chuck closing / releasing mechanisms 21, 23, 25 attached to the chucks 20, 22, 24.

Next, in the case where the wire winding machine 50 shown in FIGS. 1 to 3 winds the wire 18, the wire that has been wound
The force sent out by 18 is transmitted to the winding drum 52 via the buckling prevention tube 62 and the guide means 57, and the tip of the wire 18 is fixed to the deepest part of the drum 52, so that the force is applied. The drum 52 comes to rotate. Therefore, the wire 18 sent out is guided while curving along the inscribed circle of the sheaves 60, 60, and comes into contact with the inner wall surface of the cylindrical winding drum 52. Thus, the winding drum 52 is spirally wound into the winding drum 52 while being rotated. As a result, the wire 18 drawn to the center hole jacking device 10
Will automatically be wound onto the wire winder.

In the present embodiment, the cylindrical winding drum 52 is used, and the winding drum 52 and the sheave fixing plate 58 are supported by the shaft 54 supported by the bearings 55, 55. As shown in the figure, the winding drum 70 may be formed in a tapered shape and supported by a cantilever shaft 72 by a bearing 73. As the nature of the wire,
The winding curvature of the wire 18 has a property that it substantially depends on the wire entrance diameter of the winding drum 70. Then, if the winding drum 70 has a cylindrical shape, the contact area between the inner wall surface of the winding drum 70 and the wire 18 increases and friction increases. As a countermeasure against this, if the inner diameter of the winding drum 70 is made larger than the inlet diameter of the wire 18 as shown in the figure, the contact area between the wire 18 and the inner wall surface of the winding drum 70 is reduced, and the wire 18 easily slides sideways. Because it will be possible. Further, it is possible to deal with the tendency of the winding curvature of the wire 18 to increase.

On the other hand, in the wire guiding means of this embodiment, the sheave fixing plate
Although a plurality of sheaves 60, 60 ... Are provided on the circumference of 58, the pipe 80 is formed in an arc shape as shown in FIGS. 6 and 7, and is provided so that the wire 18 is guided. Is also good.

〔The invention's effect〕

As described above, according to the wire winding machine in the jacking device of the present invention, the force in the wire advancing direction is used as the force for rotating the winding drum, so that the wire is automatically operated without any other power source. It can be stored in the winding drum. Further, since the wires do not run off and the work area is organized, a plurality of jacking devices can be installed in the same work area.

[Brief description of drawings]

1 and 2 are a front view and a side view showing an embodiment of a wire winder in a jacking device according to the present invention, and FIG. 3 is a perspective view showing an embodiment of a wire winder according to the present invention. 4 and 5 are cross-sectional views showing an embodiment of a center hole jacking device, FIG. 5 is a cross-sectional view showing an application example of a wire winding machine, and FIGS. 6 and 7 are application of a backing prevention tube. It is the front view and side view which show an example. 10 …… Center hole jacking device, 12 …… Cylinder, 14 …… Piston, 16 …… Piston rod, 18 …… Wire, 20 …… Head chuck part, 22 …… Bottom chuck part,
24 …… Safety chuck part, 32 …… Stand, 50 …… Wire winder, 52 …… Winding drum, 54 …… Axis, 56 …… Fixing tool, 58…
… Sheave fixing plate, 60… Sheave, 62… Buckling prevention tube.

Claims (1)

(57) [Claims] 1. A jack and a chuck mechanism, each of which sequentially pulls a wire while repeatedly expanding and contracting the jack,
In a jacking device that lifts a suspended load, a winding drum having a substantially cylindrical shape and having a wire inlet opening at one end thereof is rotatably arranged, and a wire is circulated so that the inside of the winding drum extends from the wire inlet. A wire guide means for delivering the wire to the wire entrance portion is disposed so as to face the wire entrance portion, and one end of the wire passing through the jacking device is passed through the wire guide means and the wire entrance portion to the deepest part in the winding drum. The jacking device is characterized in that the winding drum is fixed by using the force of the wire that is fixed and pulled out by the jacking device, and the wire is wound in conjunction with the jacking device. Wire winder in the equipment.