JPH09137452A - Strut support - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to always arranged guard members to protective positions corresponding to a valve and to enable the protection of the valve surely. SOLUTION: In a strut support 11, pads 12a on both ends of a cylinder 12 are mounted between ribs 13a and 14a of a pair of push plates 13 and 14, and a pressure reducing valve 20 used for a faucet is projected to the pad 12a on one end side. Guard members 21 for protecting the valve 20 are arranged between the pad 12a corresponding to the valve 20 and rib 13a of the push plate 13a. Interlock sections 24 are formed in the guard members 21, and the guard members 21 are interlocked with the pads 12 to hold by interlocking the interlock sections 24 with the lower end edges of the pads 12a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure cylinder type girder support used for earth retaining shoring.

[0002]

2. Description of the Related Art In general, in a girder support used in this type of shoring support, pins at both ends of a cylinder are arranged between ribs of a pressing plate, and pins are inserted through the ribs and the pads. Pressing plates are swingably attached to both ends of the cylinder. Further, a pressure relief valve that also serves as a water injection plug is provided on the pad on one end side of the cylinder.

[0003] Then, this cutting beam support is inserted between the sheet piles of the earth retaining structure, and both pressing plates are opposed to the protruding parts of the sheet piles. In this state, high-pressure water is supplied from the pump into the cylinder via the valve. Upon injection, the cylinder is extended so that the pressing plate is pressed against the belly. Also, when dismantling the earth retaining structure, when the valve is opened by pressing the head, the cylinder is released and the internal pressure is contracted, so that the girder support can be lifted in this state and removed from the space Has become.

[0004] In this type of girder support, the valve protrudes from a pad on one end of the cylinder.
At the time of each of the above operations, it is necessary to protect the valve so that it does not collide with other objects. For this reason, in the conventional girder support, for example, the rib of the pressing plate corresponding to the valve,
There has been proposed a configuration in which a guard member for protecting the valve is disposed adjacent to the valve and is prevented from coming off by a pin inserted through the rib and the pad.

[0005]

However, in this conventional structure, the guard member is attached to the rib of the pressing plate by one pin. For this reason, when the pressing plate is swung about the pin with respect to both ends of the valve when the cutting beam support is put in and out of the upright of the sheet pile, the guard member is also swung around the pin. . As a result, there has been a problem that the guard member is separated from the protection position corresponding to the valve, and the valve cannot be protected.

The present invention has been made by paying attention to the problems existing in such conventional techniques. It is an object of the present invention to provide a girder support in which a guard member can always be arranged at a protection position corresponding to a valve, and the valve can be reliably protected.

[0007]

In order to achieve the above-mentioned object, in the invention described in claim 1, the pads on both ends of the cylinder are attached between the ribs of the pair of pressing plates, and one end of the cylinder is attached. In a girder support in which a pressure relief valve that also serves as a water tap is projected on the pad, a guard member for protecting the valve is provided between the pad corresponding to the valve and the rib of the pressing plate. The guard member is formed with an engaging portion for engaging with the lower edge of the pad to retain the guard member on the pad.

According to a second aspect of the present invention, in the beam support according to the first aspect, the guard member is formed with a bent portion that engages with a front side edge of the pad. According to a third aspect of the invention, in the beam support according to the first or second aspect, a lid is attached to the upper end of the guard member so as to be opened and closed.

Therefore, in the beam support according to the first aspect, the locking portion of the guard member engages with the lower end edge of the pad, and the guard member is integrally locked and held with respect to the pad. Therefore, even if the pressing plate is swung with respect to the pads at both ends of the cylinder, the relative position between the guard member and the pad does not change, and the guard member should always be placed at the protection position corresponding to the valve. The valve can be reliably protected.

In the beam support according to the second aspect of the present invention, the bent portion of the guard member is engaged with the front side edge of the pad in addition to the engagement of the locking portion of the guard member and the lower end edge of the pad. The guard member is locked and held on the pad. For this reason, the locking strength of the guard member to the pad can be increased, and the strength of the guard member itself can be increased by forming the bent portion.

According to the third aspect of the present invention, when the lid is placed at the closed position, the upper part of the valve is hidden. Therefore, the valve can be protected from the side by the guard member and also from above by the lid.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, one embodiment of the present invention will be described.
This will be described in detail with reference to the drawings. As shown in FIGS. 1 to 3, the beam support 11 includes a cylinder 12, and pads 12a and 12b are provided at both ends thereof. In the pair of pressing plates 13 and 14, the pins 15 are inserted from the ribs 13a and 14a into the pads 12a and 12b in a state where the pads 12a and 12b are arranged between the pair of ribs 13a and 14a projecting from the opposing surfaces. Thus, it is swingably attached to both ends of the cylinder 12.

A pair of positioning plates 16 having a substantially L-shaped cross section are welded and fixed to the outer surfaces of the pressing plates 13 and 14, and as shown in FIG.
In the case of mounting between the sheet piles 1,
7 is placed on the belly 18. A pair of latch frames 19 are provided with ribs 13a, 14a of the pressing plates 13, 14, respectively.
When the cutting beam support 11 is pulled out from between the sheet piles 17 of the earth retaining structure, a pulling tool or the like is hooked on these latch frames 19 when the cutting beam support 11 is pulled out from between the sheet piles 17.

The valve 20 is projectingly provided on the pad 12a at one end of the cylinder 12, and serves as an injection plug for injecting high-pressure water into the cylinder 12 and a valve for releasing the internal pressure of the cylinder 12. The valve 20 is projected from the side surface of the pad 12a so as to extend obliquely upward at a predetermined angle with respect to the axis of the cylinder 12, and is opened by pressing its head in the axial direction with a pressure release tool or the like. It has become.

As shown in FIGS. 1 to 4, the pair of guard members 21 has a mounting portion 22 which extends in the vertical direction. The pad 12a corresponding to the valve 20 and the rib 1 of the pressing plate 13 correspond to the valve 20.
An insertion hole 23, through which the pin 15 is inserted, is formed at the upper end of the mounting portion 22 of the mounting portion 22. Locking part 2
4 is bent and formed at the lower end of the mounting portion 22, and the guard member 21 is retained by the pad 12a by engaging the engaging portion 24 with both side edges of the lower end of the pad 12a.

The guard portion 25 is extendedly formed at the upper end front portion of the mounting portion 22 of each guard member 21 via a crank-shaped bent portion 26, and a reinforcing rib 27 is formed on the side surface thereof so as to project. Then, the guard portions 25 of each guard member 21 are arranged in parallel on both sides of the valve 20 at a predetermined interval,
The valve 20 is protected from both sides from collision with other objects. In addition, the guard member 21 causes the pad 1 to move by engaging the bent portions 26 with both side edges of the front surface of the pad 12a.
It is locked and held by 2a.

The lid 28 is rotatably attached to the upper end of the guard portion 25 of one guard member 21 via a hinge 29, and the free end portion of the guard portion 25 of the other guard member 21 is closed. It is designed to come into contact with the upper end of the. Then, in the closed state of the lid body 28,
The upper part of the valve 20 is concealed to protect the valve 20 from collision with other objects from above.

Next, the operation of the beam support constructed as described above will be described. Well, this girder support 1
In the case where 1 is used for earth retaining support, as shown in FIG.
The positioning plate 16 is placed on the upper surface 8, and the pressing plates 13, 14 are arranged to face the side surfaces of each belly 18. In this state, when high-pressure water is injected into the cylinder 12 from the valve 20 by a pump (not shown), the extension of the cylinder 12 causes the pressing plates 13 and 14 to be pressed against the belly 18, and the both bellies 18 are pressed against the earth pressure or the earth pressure. The concrete is maintained at a predetermined interval while withstanding the concrete casting pressure and the like.

In the case of dismantling the earth retaining structure, when the head of the valve 20 is pushed in the axial direction by a pressure releasing tool or the like, the valve 20 is opened and the cylinder 12 is deflated by the internal pressure. . In this state, both pressing plates 13, 1
By pulling a pull-out tool or the like on the latch frame 19 on the top 4, the cutting beam support 11 can be raised and pulled out from between the 18 and can be removed.

As described above, the beam support 11 is attached to the sheet pile 17.
When putting in and out between the stomachs 18, both pressing plates 13,
14 is swung about the pin 15 with respect to the pads 12a and 12b at both ends of the valve 12. At this time, both guard members 21 are integrally locked and held with respect to the pad 12a by the engagement of the locking portion 24 and both lower side edges of the pad 12a. Therefore, the relative position of the guard member 21 and the pad 12a does not change with the relative swing of the pressing plate 13 and the pad 12a, and the guard member 21 is always arranged at the protection position corresponding to the valve 20. ing. Therefore, the guard member 21 can surely protect the valve 20 so that another object does not collide with the valve 20.

The effects achieved by the above embodiment will be described below. (1) In this beam support, the guard member 21
In addition to the engagement of the locking portion 24 of the pad 12a with the lower end edge of the pad 12a, the bent portion 26 of the guard member 21 engages with the front side edge of the pad 12a to lock the guard member 21 to the pad 12a. It is supposed to be retained. Therefore, pad 1
The locking strength of the guard member 21 with respect to 2a can be increased. (2) Since the bent portion 26 is formed in the guard member 21, the strength of the guard member 21 itself can be increased. (3) In this beam support, the guard member 21
A lid 28 is attached to the upper end of the valve so as to be openable and closable, and when the lid 28 is placed in the closed position, the upper portion of the valve 20 is hidden. Therefore, the valve 20
In addition to being able to be protected from the side by the guard member 21, it can also be protected from above by the lid 28.

The present invention can be modified and embodied as follows. (A) A pair of left and right guard members 2 in the above embodiment
1 to be integrally formed by connecting at the upper part, the middle part or the lower part. For example, extending the locking portions 24 at the lower ends of both guard members 21 to integrate them. In this case, the guard member 21 can be attached from below. (B) One guard member 21 is arranged between one side of the pad 12a corresponding to the valve 20 and one rib 13a of the pressing plate 13, and the guard member 21 has a guard portion 25 substantially opposite to the upper end thereof. Attach the L-shaped lid 28 so that it can be opened and closed.

In such a structure, one side of the valve 20 is protected by the guard member 21, and the other side and upper side of the valve 20 are protected by the lid 28. (C) To embody the structure of the guard member 21 of the present invention in a beam support in which the valve 20 is erected upward from the pad 12a of the cylinder 12 and orthogonal to the axis of the cylinder 20. (D) The guard member 21 is disposed between the pad 12b on the side where the valve 20 is not provided and the rib 14a of the pressing plate 14 to make handling of the truss support easier.

Further, the technical ideas grasped from the above embodiment will be described below. (1) The girder support according to claim 2, wherein a guard portion is extendedly formed on a front portion of an upper end of the attachment portion of the guard member via a crank-shaped bent portion, and a reinforcing rib is formed to project on a side surface thereof. With this configuration, even if the thickness of the guard member is reduced,
The required strength can be exhibited. (2) The beam support according to (1) above, wherein the reinforcing rib has a U-shaped side surface. According to this structure, the strength of the guard member can be further increased. (3) The cut beam support according to claim 1, wherein a pair of guard members are provided on the left and right of the pad, and both guard members are connected integrally at a part thereof. According to this structure, the guard member can be easily handled and attached.

[0025]

Since the present invention is constructed as described above, it has the following effects. According to the first aspect of the present invention, the guard member can always be arranged at the protection position corresponding to the valve, and the valve can be reliably protected.

According to the second aspect of the present invention, the strength with which the guard member is locked to the pad can be increased and the strength of the guard member itself can be increased. According to the third aspect of the invention, the valve can be protected from the side by the guard member, and can also be protected from the top by the lid.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a beam support of the present invention.

FIG. 2 is a sectional view showing a usage state of the beam support.

FIG. 3 is a partially enlarged plan view of the girder support.

FIG. 4 is an exploded perspective view showing a guard member and a lid.

[Explanation of symbols]

11: Cut beam support, 12: Cylinder, 12a, 12b
... Pad, 13, 14 ... Pressing plate, 13a, 14a ... Rib, 20 ... Valve, 21 ... Guard member, 22 ... Mounting part,
24 ... Locking part, 25 ... Guard part, 26 ... Bending part, 28 ...
Lid.

Claims (3)

[Claims] 1. A girder support in which pads at both ends of a cylinder are attached between ribs of a pair of pressing plates, and a pressure relief valve that also serves as a water injection plug is projectingly provided on the pad at one end of the cylinder. A guard member for protecting the valve is disposed between the valve and the corresponding pad and the rib of the pressing plate, and the guard member engages with the lower edge of the pad to engage the guard member with the pad. A girder support that has a locking part to hold it. 2. The beam support according to claim 1, wherein the guard member has a bent portion that engages with a front side edge of the pad. 3. The beam support according to claim 1, wherein a lid is attached to the upper end of the guard member so as to be openable and closable.