JP2000233379A - Multi-purpose nipping apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a multi-purpose nipping apparatus capable of being used for many purposes at civil engineering construction site. SOLUTION: This multi-purpose nipping apparatus is provided with a pair of nipping members 2 in which action parts 2a which nip an object to be nipped to apply force to the object are formed on an inner side on one end side, respectively, and points of application 5a are formed on an inner side on the other end side, respectively. In a condition in which the action parts 2a are mutually and opposingly arranged and the points of apparatus 5a are mutually and opposingly arranged, a pair of nipping members 2 are provided with connection members 3 which are turnably and mutually connected in substantially the same plane in respective intermediate parts 2d between one end side and the other end side of a pair of nipping members 2. An opening operation means which is stretched between the points of application 5a of a pair of nipping members 2 and can open between the points of application 5a is provided. Force is applied to each point of application 5a of a pair of nipping members 2 by a hydraulic jack 4 which is the opening operation means to open between the points of application 5a so that a pair of nipping members 2 turn using each intermediate part 2d as a support point. Each action part 2a of a pair of nipping members 2 nips the object to be nipped mutually.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a civil engineering construction site,
Used to tighten the support pile and the girder support steel to secure the support pile and the girder support steel when attaching the support girder to the support pile. The present invention also relates to a multipurpose sandwiching device which can be used for crushing concrete structures such as concrete walls and the like and for tightening during close curing such as gluing.

[0002]

2. Description of the Related Art A conventional technique will be described with reference to FIGS. 7 is a perspective view for explaining the work of attaching a cloth, FIG. 8 is a perspective view showing torsion of a support pile, FIG. 9 is an enlarged view of a main part of FIG. 8, and FIG. Side sectional view showing a conventional cloth attaching operation for urging against
FIG. 11 is a perspective view showing the conventional fastening of a support pile and a girder receiving steel material using a lever block and a giant girder, and FIG.
Is a perspective view showing a case where the girder receiving steel is interrupted, FIG. 13 is an enlarged view of a main part of FIG. 12, and FIG. 14 is an enlarged view of a main part of FIG.

[0003] In the road lining work associated with urban civil works, as shown in FIGS.
(E.g., an H-beam) with its flange surfaces 30a, 3a
0b are placed on the ground in a substantially vertical direction so that they are aligned with each other.
The web surface 31a of the girder receiving steel member 31 (for example, a channel steel) is brought into contact with the girder receiving steel member 31a, 30b.
For bolting to the support pile 30 (work with cloth)
There is. Here, the girder receiving steel material 31 serves as a fulcrum of a lining receiving girder 36 on which the lining plate 35 is placed.

[0004] In such work, even if the placement accuracy of the support pile (H-shaped steel) 30 is sufficiently controlled, as shown in FIGS. There is a possibility that misalignment, twisting, falling down, etc. may occur in the cast support pile 30. For this reason, as shown in the figure, if the directions of the flange surfaces 30a and 30b of the support pile 30 do not match with the web surface 31a of the girder receiving steel material (channel steel) 31, (a gap is formed and the surfaces do not touch). Poor tightening of bolts may occur, and a desired structural strength may not be expected in bolt joining between the girder receiving steel member 31 and the support pile 30.

In order to deal with such a problem, conventionally,
At the time of attaching the girder receiving steel material 31 to the support pile 30 (working with cloth), several methods as described below have been adopted in order to make the support pile 30 and the girder receiving steel material 31 adhere to each other.

[0006] As shown in FIG. 10, a jack 41 is inserted between the ground 40 and the girder receiving steel material (channel steel) 31.
The pile 40 is pressed against the supporting pile 30 by applying a reaction force to the ground 40 and urged by the jack 41 to press the supporting pile 30.
The flange surface 30b is aligned with the web surface 31a of the girder receiving steel material 31 by bolting.

As described above, in the case where there is no place where the reaction force can be taken, such as the ground, the lever block 45 (or the chain block) is sandwiched between the girder receiving steel members 31, which sandwich the support pile 30, as shown in FIG. 31 and tightened with a lever block 45, and
A method in which 1, 31 is brought into close contact with the support pile 30.

[0008] In addition to the above method, as shown in FIG.

If the contact cannot be achieved by the above methods (1) to (4), as shown in FIGS. 12 to 14, cuts are made in the flange portions 31b, 31b of the girder receiving steel members 31, 31 by fusing using acetylene gas or the like. After that, the web surfaces 31a, 31a of the girder receiving steel members 31, 31 are bent to make the web surfaces 31a, 31a the flange surfaces 3 of the support pile 30.
A method in which the bolts are joined by closely adhering to 0a and 30b, and then the cut portions are reinforced by welding or the like.

[0010]

However, among the conventional methods as described above, the jack 41 cannot be connected to the ground 40 due to the problem that it is impossible if the ground 40 does not exist nearby or the ground conditions. There is a problem that the purpose may not be sufficiently achieved when the reaction force is insufficient due to the bite. However, there is a problem that the tightening force may be insufficient because the work is performed manually in a narrow place.
However, there are problems that many methods are used in combination, which requires a lot of time, equipment and materials, and human power, and that it takes time and effort to use unnecessary force. In such a case, it is necessary to perform melting and bending of the girder receiving steel material 31, bending, and welding reinforcement after the joining, so that there is a problem that it takes a lot of trouble and the appearance becomes poor.

Accordingly, an object of the present invention is to solve the above-mentioned problems of the prior art by sandwiching the girder receiving steel material with a strong force and urging it against the support pile to easily attach the core to the support pile. It is an object of the present invention to provide a multi-purpose pinching device which can correct displacement, twisting, falling down, and the like, and can be used secondarily for crushing concrete and tightening during gluing work.

[0012]

In order to solve the above-mentioned problems, the invention according to claim 1 is a multi-purpose pinching device, in which an object to be clamped is inserted inside one end to apply a force to the object to be clamped. Each of the acting portions is formed, and a pair of sandwiching members each having a point of force formed inside the other end side, the acting portions are arranged to face each other, and the pair of force points are arranged to face each other. A connecting member for rotatably connecting the pinch members in substantially the same plane with each other at an intermediate portion between the one end side and the other end side of each of the pair of pinch members; and An opening operation means that is erected between the power points and is capable of performing an opening operation between the power points, and a force is applied to each of the power points of the pair of sandwiching members by a hydraulic jack as the opening operation means, and the space between these power points is applied. By performing the opening operation, the pair of pinches Member rotates as a fulcrum the intermediate portion of each is characterized by, sandwiching the material to be clamped in the working portions of each of the pair of scissors members.

As the hydraulic jack as the opening operation means, a hydraulic jack having a force of, for example, about 10 to 20 t is used. It is desirable that the hydraulic jack be detachable in order to simplify the transportation of the multi-purpose pinching device and to facilitate replacement when the hydraulic jack fails, but in some cases, even if the hydraulic jack is fixed good.

According to the first aspect of the present invention, the hydraulic jack serving as the opening operation means is extended to apply a force to each of the force points of the pair of pinching members to open the space between these force points, thereby causing the pair of pinching members to open. Can be rotated about each intermediate portion rotatably connected by a connecting member as a fulcrum, so that the object to be held can be sandwiched between the action portions of the pair of sandwiching members. Also,
Since the opening operation means is a hydraulic jack, the pinching force at this time is excellent, and the held object can be pinched with a strong force.

[0015] Therefore, in the road surface lining work, when the girder receiving steel material serving as the fulcrum of the lining receiving girder on which the lining plate is mounted is attached to the supporting pile, the supporting pile may be misaligned, twisted, or toppled. When it is necessary to correct the position so that the flange surface of the support pile (for example, H-shaped steel) and the web surface of the girder receiving steel material (for example, channel steel) are in close contact with each other, the girder supports are provided on both sides of the support pile. In the state where the steel materials are arranged, the back side of each web surface of these two girder receiving steel materials is sandwiched between the working parts of the sandwiching member with strong force, so that the position of the flange surface of the support pile and the web surface of the girder receiving steel material are adjusted. The misalignment can be easily corrected and these two surfaces can be brought into close contact. Therefore, since the multipurpose pinch instrument only needs to be arranged at a predetermined position and opened by the hydraulic jack as the opening operation means, the work is not troublesome. In addition, since there is no need to have an adjacent wall, ground, or the like, there is no influence from the surrounding environment (for example, even in the air). Furthermore, no equipment other than the multipurpose pinching equipment is required, and therefore, a lot of manpower is not required. In addition, since the positional deviation of the steel material can be corrected with a strong force, it is possible to prevent the finish from being unsatisfactory and giving a bad appearance.

[0016] Secondary, it is also possible to perform a crushing operation on a concrete structure such as a concrete wall by sandwiching the working portions. In this case, there is also an advantage that the device is a noiseless crushing device.

According to a second aspect of the present invention, there is provided a multi-purpose pinching device, wherein an action portion for sandwiching the object to be held and exerting a force on the object to be sandwiched is formed inside one end side, and is formed inside the other end side. A pair of sandwiching members each having a point of force formed thereon, the action portions are arranged to face each other, and the pair of sandwiching members are placed in a state where the points of force are arranged to face each other. A connecting member rotatably connected in substantially the same plane at an intermediate portion between the one end side and the other end side, and a bridge between the force points of the pair of sandwiching members. Operable opening operation means, comprising: applying a force to each force point of the pair of sandwiching members by the opening operation means to perform an opening operation between these force points;
The pair of sandwiching members rotate about the respective intermediate portions as fulcrums, and it is possible to sandwich the object to be sandwiched between the action portions of each of the pair of sandwiching members, and as the opening operation means, It is characterized in that any one of a hydraulic jack and a telescopic mechanism that expands / contracts by rotating the bolt forward / reversely can be selected and changed as appropriate.

According to the second aspect of the invention, when a hydraulic jack is used as the opening operation means, the same operation as the first aspect of the invention can be obtained.

Further, by replacing the opening operation means with a telescopic mechanism using bolts, the opening operation means can be used as a tightening device (for example, used as a wood clipping device) during close curing during gluing work or the like.

According to a third aspect of the present invention, there is provided the multipurpose pinching device according to the first or second aspect, wherein each of the pair of pinching members has a substantially hook shape, and the tip portion of the hook shape is provided. The acting portion is formed in a curved shape, while the hook shape is formed in a curved shape such that when the acting portion contacts the side surface of the held object, it comes into contact with the upper surface of the held object. When the opening operation is performed, the action section and the contact section move smoothly with respect to the object to be clamped in accordance with the movement of the action section and the contact section corresponding to the opening operation. Slidable.

According to the third aspect of the present invention, since the pair of sandwiching members each have a substantially hook shape, the object to be sandwiched is, for example, a support pile arranged as shown in FIG. When there is a protruding portion (in this case, the flange portion 31b of the channel steel 31) on the object to be clamped, as in the case of the girder receiving steel material (channel steel) 31 disposed on the upper portion, the protruding portion is used. The action portion can be brought into contact with the portion (in this case, the back side of the web surface 31 a of the channel steel 31) of the object to be sandwiched which is to be detoured and brought into contact with the action portion. Therefore, the protruding portion does not hinder the pinching, and the pinching does not deform the protruding portion.

Further, since the action portion at the tip of the hook is formed in a curved shape, when the opening operation is performed, the movement of the action portion corresponding to the opening operation (this movement is mainly caused by a force Due to the deformation of the object to be clamped due to the addition of), the working part can slide smoothly on the object to be held, and it is impossible to Applying force can be prevented, and force can always be applied in a reasonable direction.

Further, when the object to be clamped is sandwiched only by the acting portion, the object is unstable because it is in contact with the object to be clamped at only two points of the two acting portions, and is multipurpose in the direction orthogonal to the rotation plane of the sandwiching member. Although the clamping device may fall down, the hook shape has a contact portion that comes into contact with the upper surface of the object to be clamped when the action portion contacts the side surface of the object to be clamped.
The object to be clamped can be stably sandwiched in a state of contact with the object to be clamped at four points of the two contact portions in addition to the two action portions, and the multipurpose clamping device is orthogonal to the rotation surface of the clamping member. It can prevent falling down in the direction.

Here, it is desirable that the contact portion has a predetermined width, and by doing so, it is possible to stabilize the multipurpose clamping device when the contact portion is disposed, for example, on the upper surface of the held object. The degree can be further improved, and the held object can be more stably inserted.

In addition, since the contact portion is formed in a curved shape, the movement of the contact portion corresponding to the opening operation (this movement is mainly caused by the deformation of the object to be clamped by applying a force. ), The abutment member slides (rolls) smoothly with respect to the object to be clamped (the upper surface of the object to be clamped when the action portion contacts the side surface of the object to be clamped), whereby the clamping member is moved. It can rotate smoothly, and the force of the opening operation means can be smoothly transmitted to the action portion. That is, it is possible to more efficiently sandwich the held object without causing a loss of force.

[0026]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment according to the present invention will be described below with reference to FIGS. FIG. 1 is a side view showing a cloth attaching operation by the multipurpose pinching instrument according to the present invention, and FIG.
FIG. 3 is a perspective view showing a work for attaching a cloth by the multipurpose clipping device according to the present invention, FIG. 3 is a perspective view showing a state in which the clipping members are connected by connecting members, FIG. 4 is a side sectional view of FIG. FIG. 6 is a view for explaining the rotation, FIG. 6 is a view for explaining a modified example of the multipurpose clipping device according to the present invention, FIG. 7 is a perspective view for explaining the work with cloth, and FIG. A perspective view showing
FIG. 9 is an enlarged view of a main part of FIG. 8 (FIGS. 7 to 9 are also used for explanation of a conventional technique).

First, as shown in FIGS. 1 and 2,
The multi-purpose pinching device 1 according to the present invention performs an operation of pinching an object to be held by the pair of pinching members 2, 2 having a substantially hook shape, a connecting member 3 connecting the pinching members 2, 2, and the pinching members 2, 2. And a hydraulic jack 4 serving as an opening operation means for opening one end of the sandwiching members 2 and 2.

As shown in detail in FIG.
Is, for example, two steel plates 20, 21 and these steel plates 20,
21 is roughly constituted by a steel material 22 welded to both sides. This steel material 22 has substantially the same thickness as the connecting member 3. The steel material 22 enhances the strength of the sandwiching member 2 and prevents the gap between the steel members 20 and 21 from being widened. An action portion 2a for sandwiching the object to be clamped and exerting a force on the object to be clamped is formed in a curved shape inside one end side of the sandwiching member 2, and a force receiving member is formed inside the other end side of the sandwiching member 2. 5 are provided. The force receiving member 5 is formed in a substantially L-shape, and one of two inner surfaces thereof is a force receiving surface (point of force) 5 a receiving the force of the hydraulic jack 4, and the other surface has the hydraulic jack 4 mounted thereon. The mounting surface 5b. The depth 2c of the sandwiching member 2 is set so as to correspond to the shape and dimensions of the held object. The pinching member 2 has a contact portion 2b that comes into contact with the upper surface of the object to be held when the action portion 2a comes into contact with the side surface of the object to be held (see FIG. 1), and the contact portion 2b has a curved shape. Is formed. Furthermore, the sandwiching member 2 has a predetermined width W as a whole, and accordingly, the contact portion 2b also has the width W.

A pair of such sandwiching members 2 is used as the action portion 2
a with the force receiving surfaces 5a facing each other and the intermediate portion 2d being closer to the other end than the contact portion 2b (therefore, the intermediate portion 2d is in contact with the contact portion 2b and the point of force 5).
a) between the bolt 7 and the nut 6 so as to be rotatable around the intermediate portion 2d.
To the connecting member 3 to form the main body 10 of the multipurpose clipping instrument 1. Therefore, the pair of force receiving members 5, 5
When the opening operation is performed between the power points 5a, 5a, the intermediate portions 2d, 2d
The pair of pinching members 2 and 2 respectively rotate in substantially the same plane with the fulcrum as a fulcrum (see FIG. 5), and the pair of action portions 2a and 2
2a can be closed to pinch the object to be held. Here, in order to efficiently transmit the urging force of the hydraulic jack 4 to the power points 5a, 5a, the power points 5a, 5a face each other parallel to each other while the object to be held is sandwiched by the action parts 2a, 2a. The length of the connecting member 3 is set (specifically, the length l ₁ shown in FIG. 4 is set). In other words, by adjusting the length l ₁ by changing the length of the connecting member 3 to the dimensions of the material to be clamped, it can be sandwiched suitably material to be clamped.

The hydraulic jack 4 is detachable from the main body 10, and can be used by being attached to the force receiving members 5 and 5 with the main body 10 set on an object to be clamped. Therefore, when the multi-purpose pinch instrument 1 is transported, the main body 10 and the hydraulic jack 4 can be transported independently, so that the transported object can be reduced in weight and can be transported manually. The weight of the main body 10 is desirably suppressed to about 15 to 30 kg.) At the same time, if the hydraulic jack 4 breaks down, maintenance can be performed simply by replacing the hydraulic jack 4 alone, and maintenance can be easily performed on site simply by preparing a spare hydraulic jack 4. This hydraulic jack 4
Has an urging force of, for example, 10 to 20 t.

A case where a cloth attaching operation (see the prior art) is performed using the multipurpose sandwiching instrument 1 having such a configuration will be described below. First, as shown in FIGS. 7 to 9,
The cast-in support pile (object to be clamped) 30 is misaligned, twisted, or toppled. For this reason, the flange surfaces 30a, 30b of the support pile (object to be clamped) 30 and the webs of the girder receiving steel members 31, 31 are provided. It is assumed that there is a positional deviation from the surface 31a.
On the other hand, first, the clamping members 2 and 2 of the main body 10 of the multipurpose clamping device 1 are opened by manual operation or the like, and the action portions 2a and 2a are placed on both sides of the support pile 30 as shown in FIGS. Web surfaces 31a, 31 of the arranged girder receiving steel members 31, 31
The main body 10 is set by bringing the contact portions 2b, 2b into contact with the upper surfaces of the flange portions 31b, 31b of the girder receiving steel members 31, 31, while making contact with the back surface of the main body a.

Here, as described above, the sandwiching members 2 and 2 have a substantially hook shape.
It is assumed that c (see FIG. 3) and the like are set in advance to dimensions corresponding to the flange portions 31 b of the girder receiving steel members 31. As a result, the inner sides of the sandwiching members 2 and 2 come into contact with the ends of the flange portions 31b and 31b.
b, 31b can be prevented from becoming an obstacle. Further, since the contact portions 2b have a predetermined width W,
The main body 10 can be set in a stable posture.

In this state, the connecting members 3 are set in advance so that the force receiving surfaces (force points) 5a of the force receiving members 5 and 5 face in parallel.
Are set, and these force receiving surfaces 5a,
The hydraulic jack 4 is installed over 5a. When the hydraulic jack 4 is extended to open the space between the force receiving surfaces 5a, 5a, the sandwiching members 2, 2 are respectively rotated about the intermediate portions 2d, 2d as fulcrums, and are actuated by the action portions 2a, 2a. The girder receiving steel members 31, 31 can be sandwiched with strong force.

Thus, a strong force acts on the flange surfaces 30a, 30b of the support pile 30 via the girder receiving steel members 31, 31, and it is possible to correct misalignment, twisting, falling down, etc. of the support pile 30. As a result, the web surfaces 31a, 31a of the girder receiving steel members 31, 31 become the flange surfaces 30a,
30b. Then, by bolting the girder receiving steel members 31 and 31 to the support pile 30 in this state, it is possible to perform good bolt tightening, and it is desirable to join the girder receiving steel material 31 and the support pile 30. Structural strength is obtained.

As described above, when the object to be clamped (the support pile 30 and the girder receiving steel member 31) is clamped by the multipurpose clamping device 1, there is a movement described below in detail locally. In the case of this work with cloth, the objects to be clamped are the support pile 30 and the girder receiving steel material 31, and when these are considered together, they are slightly deformed by being pinched by the action parts 2 a and 2 a of the multipurpose clamping device 1 with a strong force. Will be. Therefore, at this time, the action portions 2a, 2a slightly move (slide) on the back surfaces of the web surfaces 31a, 31a of the girder receiving steel members 31, 31, but the action portions 2a, 2a are formed in a curved shape. The movement at this time can be performed smoothly. Therefore, of the web surfaces 31a, 31a of the girder receiving steel members 31, 31, which are the objects to be clamped, an excessive force is not continuously applied to only one point where the action portions 2a, 2a first come into contact with each other. Can apply force to

On the other hand, simultaneously with the movement of the working parts 2a, the contact parts 2b, 2b also slightly move on the upper surfaces of the flange parts 31b, 31b of the girder receiving steel members 31, 31. This is because the movement of the action parts 2a, 2a is
This is caused by a slight rotation of the sandwiching members 2 and 2 around the fulcrum 2d.
b also moves (rolls) on the upper surfaces of the flange portions 31b, 31b. On the other hand, since the contact portion 2d of the sandwiching member 2 is formed in a curved shape, the movement (rolling) at this time can be performed smoothly. Therefore, the operating portions 2a, 2 can be smoothly moved without causing a loss in the force of the hydraulic jack 4.
Therefore, the girder receiving steel material 31 and the support pile 30 which are the objects to be held can be interposed very efficiently.

As described above, according to the data obtained by applying the multi-purpose pinching device 1 to the actual work of attaching cloth, even if the center of the support pile 30 is different, it is not necessary to cut the pile up to about 7 mm (see the prior art). ) The position of the support pile 30 could be corrected.

As described above, according to the multipurpose pinching device 1 of the present invention, since the opening operation means is the hydraulic jack 4, the force for pinching the object to be held by the action portions 2a of the pinching members 2, 2 is reduced. Are better. Therefore, in road surface lining work, it is possible to easily correct the positional deviation between the flange surfaces 30a and 30b of the support pile 30 and the web surface 31a of the girder receiving steel member 31 and bring both surfaces into close contact.

Further, since it is only necessary to dispose the multipurpose pinching device 1 at a predetermined position and open the hydraulic jack 4 with the hydraulic jack 4 serving as an opening operation means, the work is not troublesome as in the prior art. In addition, since there is no need to have an adjacent wall, ground, or the like, there is no influence from the surrounding environment (for example, even in the air). Further, there is no particular need for equipment other than the multipurpose pinching instrument 1 and, therefore, does not require much human power. in addition,
Since the positional deviation of the steel material can be corrected with a strong force, it is possible to prevent the finish from being broken and giving a poor appearance as much as possible.

Further, since the pair of sandwiching members 2 have a substantially hook shape, when the object to be sandwiched is, for example, the support pile 30 and the girder receiving steel member 31, the flange portion 31 b of the girder receiving steel member 31 is removed. Detour and web surface 3 of girder receiving steel material 31
The action portion 2a can be held in contact with the back side of 1a so that the flange portion 31b is not hindered from being pinched, and the flange portion 31b is not deformed by the pinch.

In addition, a hook-shaped distal end portion 2a
Is formed in a curved shape, so that the action portion 2a slides smoothly on the object to be clamped with the movement of the action portion 2a due to deformation of the object to be held (for example, the support pile 30 and the girder receiving steel material 31). It can move, and can always pinch by applying force in a reasonable direction.

The hook shape of the pinching member 2 has a contact portion 2b that comes into contact with the upper surface of the object to be held when the action portion 2a comes into contact with the side surface of the object to be held. In addition, the object to be clamped can be stably sandwiched in a state where the object to be clamped is in contact with the object to be clamped at four points of the two abutting portions 2b. It is possible to prevent the vehicle from falling in the direction perpendicular to the direction.

Further, since the contact portion 2b is formed in a curved shape, the contact portion 2b is moved by the deformation of the held object (for example, the support pile 30 and the girder receiving steel material 31) or the like. 2b smoothly slides (rolls) on the object to be clamped
And the force by the hydraulic jack 4 can be transmitted to the action section 2a without loss.

Further, according to the multi-purpose pinching device 1, by operating in the same manner as described above, it can be used secondarily for crushing work of concrete structures and the like, and can be performed without noise. Having.

In the above embodiment, the support pile 3
Although the example of using the multipurpose pinching instrument 1 for the work of attaching cloth to the case where 0 is an H-shaped steel has been described, the operation of attaching cloth can be similarly performed even when the support pile is a sheet pile (sheet pile). Further, the multipurpose pinching device according to the present invention utilizes the "lever principle", and even if the force of the opening operation means is constant, the force point (force receiving surface 5
adjusting the distance l ₂ between a) a fulcrum (center portion 2d), by adjusting the ratio of the distance l ₃ between the fulcrum and the action point (action portion 2a), a force sandwiching the material to be clamped at the working portion 2a (Design) of course.

<Modification> In the above embodiment, the opening operation means is a hydraulic jack. However, any one of a hydraulic jack and a telescopic mechanism using bolts is appropriately selected and changed as the opening operation means. It may be a multipurpose pinching instrument that can be used. Here, as shown in FIG. 6, for example, as shown in FIG. 6, the expansion / contraction mechanism using the bolt extends / contracts by screwing the bolt 50 into / out of the nut member 51 by rotating the bolt 50 forward / reversely, and thereby sandwiching the bolt 50. Force receiving surfaces (force points) 5a, 5a of force receiving members 5, 5 provided on the bases 2, 2
The opening / closing operation can be performed.

According to such a modification of the embodiment according to the present invention, when the hydraulic jack 4 is used as the opening operation means, the operation and effect as in the above-described embodiment can be obtained. By replacing the opening means with a telescopic mechanism using bolts, it can be used as a tightening device (for example, used as a wood clipping device) at the time of close curing during gluing work or the like.

[0048]

According to the multipurpose pinching device according to the first aspect of the present invention, since the opening operation means is a hydraulic jack, the pinching force at this time is excellent, and the object to be pinched can be pinched with a strong force. Therefore, in the road surface lining work, when there is a misalignment, twist, fall, etc. in the support pile, when it is necessary to correct the position so that the flange surface of the support pile and the web surface of the girder receiving steel material are in close contact, By sandwiching the working portions of the sandwiching member with strong force, it is possible to easily correct the positional deviation between the flange surface of the support pile and the web surface of the girder receiving steel member, and to bring these two surfaces into close contact with each other. Therefore, the opening operation only needs to be performed by the hydraulic jack, and the work is not troublesome. Further, since there is no need to provide an adjacent wall, ground, or the like, there is no influence from the surrounding environment. Furthermore, no equipment other than the multipurpose pinching equipment is required, and therefore, a lot of manpower is not required. In addition, since the displacement of the steel material can be corrected with a strong force, it is possible to prevent the finish from having a bad appearance due to a crack.

Also, as a secondary operation, the work of crushing a concrete structure such as a concrete wall can be performed by being sandwiched between the working parts. In this case, there is also an advantage that the device is a noiseless crushing device.

According to the multipurpose pinching device according to the second aspect of the invention, when a hydraulic jack is used as the opening operation means, the same effect as the first aspect of the invention can be obtained. Further, by replacing the opening operation means with a telescopic mechanism using bolts, the opening operation means can be used as a tightening tool at the time of close curing during gluing work or the like.

According to the multipurpose pinching device according to the third aspect of the present invention, since the pair of pinching members each have a substantially hook shape, it is desirable to pinch the object by bypassing the protruding shape of the held object. The action portion can be brought into contact with the portion, so that the protruding portion of the object to be clamped does not obstruct the pinching, and the protruding portion of the object to be clamped is not deformed by the pinching. In addition, since the action portion of the hook-shaped distal end portion is formed in a curved shape, the action portion can smoothly slide with respect to the object to be held with the movement of the action portion accompanying the opening operation, The force can always be applied in a reasonable direction. The hook shape of the pinching member has a contact portion that comes into contact with the upper surface of the object to be clamped when the action portion contacts the side surface of the object to be clamped. Thus, the object to be held can be interposed.
In addition, since the contact portion is formed in a curved shape, the contact portion slides (rolls) smoothly with respect to the object to be held with the movement of the contact portion accompanying the opening operation. The force by the opening operation means is smoothly transmitted to the action portion, and the held object can be sandwiched more efficiently without causing a loss of force.

[Brief description of the drawings]

FIG. 1 is a side view showing a cloth attaching operation using a multipurpose clipping instrument according to the present invention.

FIG. 2 is a perspective view showing a cloth attaching operation by the multipurpose clipping instrument according to the present invention.

FIG. 3 is a perspective view showing a state in which a sandwiching member is connected by a connecting member.

FIG. 4 is a side sectional view of FIG. 1;

FIG. 5 is a diagram for explaining rotation of a sandwiching member.

FIG. 6 is a view for explaining a modification of the multipurpose clipping instrument according to the present invention.

FIG. 7 is a perspective view for explaining a cloth attaching operation.

FIG. 8 is a perspective view showing torsion of a support pile.

FIG. 9 is an enlarged view of a main part of FIG. 8;

FIG. 10 is a side sectional view showing a conventional cloth attaching operation in which a girder receiving steel material is urged against a support pile using a jack.

FIG. 11 is a perspective view showing the conventional fastening of a supporting pile and a girder receiving steel material using a lever block and a giant bar.

FIG. 12 is a perspective view showing a case where the girder receiving steel material is interrupted.

FIG. 13 is an enlarged view of a main part of FIG.

FIG. 14 is an enlarged view of a main part of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Multipurpose pinching apparatus 2 Pinching member 2a Working part 2b Contact part 2d Intermediate part 3 Connecting member 4 Opening means (hydraulic jack) 5a Force point (force receiving surface) 30 Clamped object (support pile) 31 Clamped object (girder support) (Steel) 50 Opening means (Telescopic mechanism: bolt) 51 Opening means (Telescopic mechanism: Nut member)

Claims (3)

[Claims] 1. A pair of holding members, each having an action portion for sandwiching an object to be held and exerting a force on the object to be sandwiched, is formed inside one end side, and a force point respectively formed inside the other end side. In a state in which the acting portions are arranged to face each other and the power points are arranged to face each other, the pair of sandwiching members are disposed between the one end side and the other end side of each of the pair of sandwiching members. A connecting member rotatably connected to each other in substantially the same plane at the portion, and an opening operation means erected between the power points of the pair of sandwiching members and capable of performing an opening operation between the power points. By applying a force to each of the force points of the pair of pinching members by a hydraulic jack as an operating means and performing an opening operation between these force points, the pair of pinching members rotate around the respective intermediate portions as fulcrums, and the pair of pinching members rotate. The said action part of each of the sandwiching members In multi-purpose scissors instrument, characterized in that, sandwiching the material to be clamped. 2. A pair of sandwiching members, each having an action portion for sandwiching the object to be held and exerting a force on the object to be sandwiched, is formed inside one end side, and a force point respectively formed inside the other end side. In a state in which the acting portions are arranged to face each other and the power points are arranged to face each other, the pair of sandwiching members are disposed between the one end side and the other end side of each of the pair of sandwiching members. A connecting member rotatably connected to each other in substantially the same plane at the portion, and an opening operation means erected between the power points of the pair of sandwiching members and capable of performing an opening operation between the power points. By applying a force to each force point of the pair of sandwiching members by the operating means and performing an opening operation between these force points, the pair of sandwiching members rotate around the respective intermediate portions as fulcrums,
The object to be clamped can be sandwiched between the action portions of each of the pair of sandwiching members, and the opening operation means includes a hydraulic jack and a telescopic device that expands / contracts by rotating a bolt forward / reversely. And a mechanism capable of appropriately selecting or changing any of the mechanisms. 3. The pair of sandwiching members each have a substantially hook shape, and the action portion at the tip of the hook shape is formed in a curved shape, while the hook shape is the action portion. Has an abutting portion formed in a curved shape, which abuts on the upper surface of the object to be held when abutting on the side surface of the object to be held, and when the opening operation is performed, the operation corresponding to the opening operation is performed. The multi-purpose according to claim 1 or 2, wherein the action portion and the contact portion can smoothly slide with respect to the held object with movement of the portion and the contact portion. Pinching equipment.