JP2737387B2 - Moving equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION << Industrial Application Field >> The present invention relates to a moving apparatus applied to lift-up or lateral pulling of a heavy moving object.

<< Conventional Technology >> Conventionally, for example, when lifting a heavy object at a construction site or the like, a plurality of PC strands, which are tension cords connected to the heavy object, are connected to a lifting part such as a center hole hydraulic jack or the like. A technique of intermittently pulling up with a hydraulic jack is known. This center hole hydraulic jack is a jack with a hole at the center that allows a plurality of PC strands to be inserted all at once. The piston reciprocates at a constant stroke with respect to the cylinder by the supplied oil pressure, and is provided on each of the piston and cylinder. In addition, while gripping and releasing the PC strand with a pair of specially shaped grips that can grip multiple PC strands at once, intermittently pulling these PC strands upward to move heavy objects upward It has become. In particular,
When the piston is lifted relative to the cylinder, the grip on the piston grips multiple PC strands at once and releases the grip on the cylinder to allow lifting of heavy objects, while lowering the piston relative to the cylinder When it is done, the grip on the cylinder side grips the PC strand at once and releases the grip on the piston side while supporting a heavy object so that the piston can return.

In addition, a wire strand jack is known as a similar type of apparatus that pulls a single PC strand by combining a plurality of jacks and a grip similar to the above, and a PC having a full thread as a cord is also known. There are also known a lift-up device using a steel bar and a step rod device provided with a special jack using a steel bar having irregularities.

<< Problems to be Solved by the Invention >> However, the above-described conventional apparatus has various problems in configuration and operation. For example, in the case of the first center hole hydraulic jack, the configuration of the grip and the like is special, complicated, large-scale, and lacks versatility.
In addition, there are restrictions on the number of PC strands, the hydraulic jack capacity, the number of hydraulic jacks, and the like. Further, when the tensile force applied to each of the plurality of PC strands differs, it is difficult to adjust them.

In the case of a wire strand jack, one
Since the number of PC strands to be used increases as the number of PC strands to be used increases, the number of jacks also increases,
There was a lack of economy and space efficiency, such as a considerable increase in installation space.

Furthermore, in the lift-up device that uses a PC steel bar with all threads and the step rod device that uses a steel bar with irregularities, it is troublesome to respond to the joints between the steel bars, which takes time and material, and the rigidity of the steel bar Is large and the handling is troublesome, and it is not preferable especially for long distance movement.

The present invention has been made in view of such circumstances, and has a simple configuration, can be made compact in size of the apparatus, and does not require a special jack, is versatile, and can be used with a large number of cords with a small number of jacks. It is easy to handle, can improve economy and space efficiency, and can adjust the tension of each cable body. It is an object of the present invention to provide a moving device suitable for moving a distance.

<< Means for Solving the Problems >> The present invention provides an apparatus for moving an object to be moved by applying a tensile force to a rope connected to the object.
A movable table arranged reciprocally so as to be close to and away from the gantry, a jack provided on the gantry to reciprocally drive the movable gantry, and the movable gantry provided on the movable gantry, A first grip having an edge for gripping the cord when moving away from the gantry and releasing the cord when the movable platform moves close to the gantry; A second grip having an edge for gripping the chord when the first grip releases the chord while gripping the chord; A guide body is provided between the grip and the second grip and guides the rope in the reciprocating direction of the movable base.

Further, in the present invention, a plurality of the first grip and the second grip are installed on each of the gantry and the movable table,
A center hole hydraulic jack is provided at each of the rope body introduction portions of the first grip and the second grip, and the center hole hydraulic jacks of the first grip and the center hole hydraulic jacks of the second grip are respectively provided. It is characterized by being connected in series by individual hydraulic circuits.

<< Operation >> With the configuration described above, in the moving device according to the present invention, when the movable base moves away from the gantry, the rope is gripped by the edge in the first grip, and the rope is gripped by the edge in the second grip. Is released, and the cable body is moved along with the movable table along the moving direction of the movable table. On the other hand, when the movable platform moves closer to the gantry, the rope is gripped by the edge in the second grip, and the rope is released by the edge in the first grip, so the rope is fixed to the gantry. . Then, the movable body is repeatedly reciprocated close to and away from the gantry by the jack, whereby the rope is relatively moved with respect to the gantry, and the moving object connected to the rope is moved. Here, since the guide body for guiding the rope in the reciprocating movement direction of the movable base is provided between the first grip and the second grip, the movable base is repeatedly moved close to and away from the gantry. In addition, it is possible to reliably prevent the cable body from being bent, and it is possible to smoothly perform the lift-up operation without any support.

In addition, a plurality of first grips and second grips are provided with center hole hydraulic jacks, respectively, and these jacks are individually connected to each other by a single hydraulic circuit, so that the tensile force acting on each cord is made uniform. Can be

<< Embodiment >> An embodiment of the present invention will be described below with reference to the drawings.

1 to 3 show one embodiment of the present invention. 1 is a side view of the present embodiment, FIG. 2 is a plan view thereof, and FIG. 3 is a partial sectional view thereof.

Although the present embodiment relates to a device for lifting up a heavy moving object, the present invention can be similarly applied to horizontal pulling or the like.

The present embodiment is basically a device for moving a heavy object as a moving object by applying a tensile force to a PC strand 4 as a rope connected thereto, and a fixed base 1 and a fixed base 1. An upper beam 3, which is a movable platform, which is reciprocally movable so as to be close to and away from the vehicle, a jack 2, which is provided on the platform 1, and which reciprocally drives the upper beam 3, is provided on the platform 1, and is connected to a heavy object. The first PC strand 4 is held out when the jack 2 moves the upper beam 3 close to the gantry 1 side while the PC strand 4 is led to the upper beam 3 side through the gantry 1.
A lower grip 5 as a gripping means, and a PC strand 4 provided on the upper beam 3 and led out from the lower grip 5,
An upper grip 6 is provided as second gripping means for holding the upper beam 3 when the jack 2 moves the upper beam 3 away from the gantry 1 side. Further, between the lower grip 5 and the upper grip 6, guides 8, 9 for guiding the PC strand 4 in the reciprocating direction of the upper beam 3 are provided. That is, as shown in FIG. 1 and FIG.
And a pair of left and right hydraulic jacks 2 is attached to the upper surface of the gantry 1. Each hydraulic jack 2 has a fixed cylinder portion 2a and an upward movable piston portion 2b, and a driving oil pressure is supplied from a control device (not shown). The movable piston portion 2b of the hydraulic jack 2 is provided with an upper beam 3 as a movable table in a position facing the gantry 1. The upper beam 3 is moved by the hydraulic jack 2 toward and away from the gantry 1, that is, up and down. It can be reciprocated with a constant stroke in the direction.

On the other hand, a heavy object (not shown) to be moved is arranged below the gantry 1 and, for example, 3
The PC strands 4 of the book are inserted sequentially upward through the gantry 1 and the upper beam 3. The number of the PC strands 4 can be arbitrarily set as necessary, such as the weight of a heavy object. In the PC strand insertion part of the gantry 1 and the upper beam 3,
A lower grip 5 and an upper grip 6 are attached as a second grip and a first grip, respectively, and the respective PC strands 4 are gripably and releasably inserted into the respective grips 5, 6.

FIG. 3 is an enlarged view of the grips 5 and 6 and the configuration of the insertion portion of the PC strand 4 for these grips.

Each of the grips 5, 6 includes a base plate 5a, 6a, a cylindrical case body 5b, 6b fixed on the base plate 5a, 6a, and a sleeve 5c, which is fixed in the case body 5b, 6b. 6c and PC strand gripping edges 5d, 6d slidably fitted in the sleeves 5c, 6c. Each sleeve 5c,
The inner surface of 6c is tapered so that the diameter gradually increases upward, and the outer peripheral surface of each edge 5d, 6d is a sleeve 5c, 6c, respectively.
The shape corresponds to the inner surface of the. In addition, case body 5
A spring 7 is provided in the upper part of b and 6b, and the edges 7d and 6d are constantly urged downward by the spring 7.

When the PC strand 4 is pulled downward by the load of the heavy object, the edges 5d and 6d move downward by friction with the PC strand 4 and the urging force of the spring 7, respectively, so that the sleeve 5c It penetrates into 6c and contracts in the radial direction, grips and fixes the PC strand 4 in a biting state, and prevents downward movement. On the other hand, when the PC strand 4 receives a moving force that moves upward relative to the respective edges 5d, 6d, the respective edges 5d, 6d float from the sleeves 5c, 6c due to friction with the PC strand 4, respectively. Become P
The gripping of the C strand 4 is released.

A lower guide pipe 8 for PC strand guide is provided on the case body 5b of the lower grip 5 so as to protrude upward. Also, on the base plate 6a of the upper grip 6,
An upper guide pipe 9 for PC strand guide protrudes. The ends of the guide pipes 8 and 9 are fitted to each other to form a PC strand guide hole. Accordingly, the PC strand 4 between the gantry 1 and the upper beam 3 is prevented from bending by being held around the guide pipes 8 and 9.

When the upper beam 3 is raised by driving the hydraulic jack 2, the upper grip 6 is moved together with the upper beam 3.
Also rises. In this case, PC strand 4 is upper edge 6d
In this state, a downward load is applied to the PC strand 4, so that the upper edge 6 d grips the PC strand 4 and raises the PC strand 4. On the other hand, in this case, in the fixed lower grip 5, the lower edge 5d floats from the sleeve 5c due to the relative upward moving force of the PC strand 4, and the PC strand 4 is released. Therefore, when the upper beam 3 is raised, the PC strand 4 and thus the heavy object (not shown) are pulled upward.

On the other hand, when the upper beam 3 is lowered, a downward load is applied to the PC strand 4, and conversely, the lower edge 5d falls into the sleeve 5c.
The PC strand 4 is gripped and fixed. In this state, when the upper beam 3 is still lowered, a relative upward moving force is generated on the PC strand 4 at the upper edge 6d.
6d rises from the sleeve 6c, and the PC strand 4 is released. Therefore, when the upper beam 3 descends, the PC strand 4 and the heavy object are held at a fixed height position.

By repeating the above operation, the heavy object is intermittently lifted up through the PC strand 4.

According to this embodiment, the PC strand 4 is the hydraulic jack 2
, It does not require a special jack as in the prior art, and a general-purpose hydraulic jack 2 can be applied. The number of PC strands 4 and the capacity and number of hydraulic jacks 2 can be freely combined according to the purpose.

Also, since it is possible to pull many PC strands 4 with a small number of hydraulic jacks 2, it is economical and it is possible to arrange the jacks 2 close to the PC strands 4. Space saving,
Concentration of hanging points can be achieved.

In addition, the PC strand 4 can be automatically moved only by reciprocating the upper beam 3 close to and away from each edge 5d, 6d of the upper grip 6 and the lower grip 5, thereby simplifying the work of moving heavy objects. Can be done.

Furthermore, the use of the PC strands 4 eliminates the need for labor and materials associated with joints such as steel rods, and the PC strands 4 are bendable, making them easy to handle and especially suitable for long distance movements. It is advantageous.

Further, since the guide pipes 8, 9 are provided between the grips 5, 6, and the periphery of the PC strand 4 is held, the bending is reliably prevented, and the lift-up operation can be performed smoothly without any support.

FIGS. 4 to 6 show other embodiments of the present invention in which the arrangement and the number of the hydraulic cylinder 2, the grips 5, 6 and the PC strand 4 are variously changed.

FIG. 4 shows a case where three hydraulic cylinders 2 arranged at each vertex of the triangular base 1 and the upper beam 3 and seven grips 5 and 6 are arranged in a region surrounded by the hydraulic cylinder 2. An example is shown.

FIG. 5 illustrates a case where one hydraulic cylinder 2 and eight grips 5 and 6 are arranged around the hydraulic cylinder 2.

FIG. 6 illustrates a case where the hydraulic cylinders 2 and the grips 5, 6 are alternately arranged in a line.

As described above, the number of PC strands 4 and the capacity and number of hydraulic jacks 2 can be freely combined according to the purpose as described above.

Further, FIG. 7 shows an example in which a plurality of grips 5 and 6 are installed on the gantry 1 and the upper beam 3, respectively, and center hole hydraulic jacks 10 and 12 are provided on the respective portions of the grips 5 and 6 where the PC strand 4 is introduced. Have been. In this case, the center hole hydraulic jacks 10 provided on the lower grip 5 are connected in series by a single hydraulic pipe 11 of an independent hydraulic circuit, and the other center hole hydraulic jacks provided on the upper grip 6 are connected. The units 12 are connected in series by a single hydraulic tube 13 of a separately provided hydraulic circuit. With this configuration, it is possible to equalize the tensile force applied to the PC strand 4 gripped by the grips 5 and 6 on the gantry 1 side and the upper beam 3 side, respectively.

In the above embodiment, the case where the present invention is applied to lift-up of a heavy object is described. However, the present invention is not limited to this. It can be applied as a draw.

<< Effects of the Invention >> As described above, according to the present invention, the movable body is provided between the first grip and the second grip by guiding the cable body in the reciprocating direction of the movable body. It is possible to reliably prevent the cable body from being bent when repeatedly reciprocating to and away from the gantry, and it is possible to smoothly perform the lift-up operation without any support.

Also, a center hole hydraulic jack is provided at each of the first grip and the second grip installed at the cable body, and a plurality of center hole hydraulic jacks of the first grip are provided. By connecting the center hole hydraulic jacks of the second grip with each other in series by individual hydraulic circuits, it is possible to make the tensile force acting on each cable body uniform.

[Brief description of the drawings]

1 is a side view showing one embodiment of the present invention, FIG. 2 is a plan view thereof, FIG. 3 is a partially enlarged sectional view thereof, and FIGS. 4 to 6 show other embodiments of the present invention, respectively. FIG. 7 is a side view showing still another embodiment of the present invention. DESCRIPTION OF SYMBOLS 1 ... Stand 2 ... Jack (hydraulic jack) 3 ... Movable stand (upper beam) 4 ... Cable body (PC strand) 5 ... 1st gripping means (lower grip) 6 ... 2nd gripping means (upper part) Grip) 8,9 Guide body (guide pipe) 10,12 Center hole hydraulic jack 11,13 Hydraulic circuit (hydraulic pipe)

Claims (2)

(57) [Claims] An apparatus for moving a moving object by applying a tensile force to a rope body connected to the moving object, comprising:
A movable table arranged reciprocally movable so as to be close to and away from the gantry; a jack provided on the gantry to drive the movable table reciprocally; and a jack provided on the movable gantry, wherein the movable gantry includes the gantry. A first grip having an edge for releasing the cord when the movable platform moves close to the platform while gripping the cord when moving away from the platform; A second grip having an edge for gripping the chord when the first grip releases the chord, while releasing the chord when the grip grips the chord; And a guide member provided between the movable grip and the second grip, for guiding the cable body in a reciprocating direction of the movable base. 2. A plurality of said first grips and said second grips are installed on each of said gantry and said movable table, and a center hole hydraulic jack is provided on each of said first grips and said second grips at a cable body introducing portion. The movement according to claim 1, wherein the center hole hydraulic jacks of the first grip and the center hole hydraulic jacks of the second grip are connected in series by separate hydraulic circuits. apparatus.