JPH0635331U - Girder jack for soil retaining - Google Patents

Abstract

(57) [Summary] [Purpose] To enable easy and safe installation and movement of earth retaining jacks. [Structure] At both ends of the truss jack 1, a receiving portion 32 capable of supporting the inner side surface of a bulging member 87 erected on a retaining wall 86 is provided, and the truncation jack 1 is provided with both ends of the truss jack 1. An earth retaining joist jack provided with a traveling roller 55 that can travel on the upper surface of the uprising 87, projecting above the portion and outward of both ends.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a retaining girder jack used for supporting an abdomen, etc. installed on a retaining wall of an excavation trench.

[0002]

[Prior art]

 2. Description of the Related Art Conventionally, a jack for earth retaining that supports an abdomen erected on an earth retaining wall is known from Japanese Utility Model Laid-Open No. 4-61139.

As shown in the outline of FIG. 9, the one described in the above-mentioned publication supports an upright 87 erected inside the earth retaining wall 86, and the hydraulic type beam girder jack 1 The receiving portion 32 is connected to both end portions of the receiving portion 32 via a ball seat (not shown). The receiving portion 32 is provided with a locking piece 72 and a bank 80, and the receiving portion 32 supports the uprising 87. However, the retaining wall 86 is prevented from falling or moving.

A screw type jack beam jack 1 is also known. As shown in FIG. 10, a screw ring 73 is rotatably attached to the tip of an outer cylinder 70 having a receiving portion 32 at the end, and the screw ring 73 is attached to the end of the screw ring 73. A threaded rod 71 provided with a receiving portion 32 is screwed, and a screw ring 73 is rotated by a rotating handle 74 to extend and contract the beam girder jack 1.

[0005]

[Problems to be solved by the device]

 In order to prevent the earth retaining wall 86 installed in the excavation trench 85 from falling down by the earth retaining jack, a bellows 87 is erected inside the earth retaining wall 86, and the bellows 87 is placed in the front and rear direction. , Install a large number of earth retaining jacks at regular intervals.

When a pipe is installed in the excavation groove 85, the length of the pipe (single pipe) to be installed is generally longer than the installation interval of the soil retaining girder jacks installed in the excavation groove 85. (In the case of a gas pipe, the length of a single pipe is generally 6 m to 12 m.) In order to secure the space necessary for suspending the single pipe, several earth retaining beam jacks installed in the excavation trench 85 are removed. .

[0007] Then, a reinforcing earth retaining beam girder jack is added to the uprising 87 of the retaining wall 86 provided in the excavating groove 85 adjacent to the portion of the excavating groove 85 from which the retaining soil girder jack is removed. It

Further, after suspending the single pipe in the excavation groove 85, the earth retaining girder jack removed from the uprising 87 of the soil retaining wall 86 of the excavation groove 85 as described above is again returned to its original position. Must be installed in.

When a pipe is to be installed in the excavation trench 85 as described above, installation, removal and re-installation of the earth retaining girder jack must be repeated. Further, the installation and removal of the earth retaining girder jack is time-consuming, laborious, and dangerous because it is performed in the narrow excavation groove 85.

The present invention has been made in view of the above matters, and has a technical problem to make it possible to easily and safely install and remove a retaining girder jack.

[0011]

[Means for Solving the Problems]

 The first invention is to provide a receiving portion 32 capable of supporting the inner surface of the abdomen 87 on both ends of the beam girder jack 1, and to the beam girder jack 1 with both ends of the beam girder jack 1. An earth retaining joist jack was provided with a traveling roller 55 that is capable of traveling on the upper side of the abdomen 87 and projecting above both ends and outward of both ends.

A second aspect of the invention is the same as the first aspect of the invention, in which the receiving portion 32 is connected to the beam girder jack 1 by a ball seat 33, and the receiving portion 32 is made up of a plurality of restraining springs 38 so that the receiving portion 32 becomes vertical. It was urged in the direction and was connected to the girder jack 1 to form a retaining girder jack.

The third and fourth inventions are, in the first and second inventions, provided with running rollers 55 at both ends of the frame 46, and a small roller 63 at the upper end of the frame 46. The hanging tool 62 mounted with is installed so that it can be moved on the bottom plate 47 of the frame 46 by the small roller 63, the beam girder jack 1 is attached to the lower part of the hanging tool 62, and The suspending tool 62 was attached with a reduction spring 40b for urging the beam girder jack 1 in the direction of contraction to form a retaining girder jack.

[0014]

[Action]

 In the first invention, as shown in FIG. 3, the cut beam jack 1 is contracted so that the receiving portions 32 provided at both end portions of the cut beam jack 1 are separated from the inner surface of the agitating body 87. The traveling roller 55 is placed on the upper surface of the raising 87.

Then, the running roller 55 is used to run and move the retaining cleat jack to a desired position. Then, in the same manner as the conventional retaining cleat jack, the trellis jack 1 is extended, and the receiving portion 32 presses the inner surface of the uprising 87 to support the uprising 87.

In the second invention, the receiving portion 32 connected to the beam girder jack 1 by the ball seat 33 is further urged by the plurality of restraining springs 38 in the direction in which the receiving portion 32 becomes vertical, so When the beam girder jack 1 is moved when the truss jack 1 is not in operation, the restraining spring 38 holds the receiving portion 32 vertically, and when moving, the end of the receiving portion 32 is moved. Prevents him from getting angry and touching 87.

In the third and fourth inventions, the suspending tool 62 is installed on the frame 46 provided with the traveling roller 55 so that the suspending tool 62 can be moved by the small roller 63, and the suspending tool 62 is attached to the beam girder jack 1. Since the hanging tool 62 is urged by the reduction spring 40b, the beam girder jack 1 is held in a straight line at a predetermined position even when it is expanded and contracted, and an unreasonable force is applied to the expansion mechanism and the liquid-tight mechanism. Never.

Since the reduction spring 40b is provided on the frame 46, the construction of the beam girder jack 1 becomes simple.

[0019]

【Example】

 Hereinafter, an embodiment of the present invention will be described. 1 to 4 show an embodiment of the present invention.

The earth retaining girder jack of this embodiment is intended to prevent the earth retaining wall 86 installed in the excavation groove 85 for installing a pipe such as a gas pipe from falling down. A bulge 87 formed of shaped steel is erected, and the bulge 87 is supported.

The earth retaining joist jack is formed by connecting two U-shaped steels facing each other to form a frame 46, and one end of the frame 46 extends in a horizontal direction perpendicular to the frame 46. A reinforcing plate 49 is attached to the central portion of the substrate 48 by welding and is attached (FIG. 2).

A pulley-shaped running roller 55 is rotatably provided at both ends of the substrate 48 fixed to the frame 46. A running roller 55 having a long axial length is rotatably provided at the other end of the frame 46. Each of the traveling rollers 55 is formed so as to travel on the upper surface of the uprising 87 made of the H-shaped steel.

As shown in FIG. 2, a pair of bottom plates 47 are provided in the lower part of the pair of U-shaped steels forming the frame 46 at a position which is the center line of the frame 46. Two sets of bottom plates 47 are provided at positions near both ends of the frame 46.

Then, two suspenders 62 are attached to the bottom plate 47 of the frame 46. That is, a pair of two small rollers 63 mounted on the upper part of the hanging tool 62 are placed on the bottom plate 47, and the small rollers 63 are installed so as to be movable along the frame 46. .

An annular mounting member 64 that can be tightened with a bolt is provided below the hanging member 62. Further, the tip end of the reduction spring 40b is attached to the suspension 62 provided on the side closer to the substrate 48 of the suspension 62, and the base of the reduction spring 40b is fixed to the frame 46. The hanging tool 62 is urged in the direction in which the girder jack 1 is contracted.

Then, the girder jack 1 is attached to the annular attachment 64 of the suspension 62 along the lower side of the frame 46. The cutting beam jack 1 is extended by the hydraulic pressure of a pump (not shown), and is supported by the receiving portions 32 provided at both end portions thereof by abutting against the inner surface of the uprising 87 made of H-shaped steel. It is possible.

Further, the receiving portion 32 is formed by the ball seat 33 so as to be able to contact the inner surface of the agitating body 87 in an inclined state, and the receiving portion 32 is shown in FIG. Similar to 32, a plurality of restraining springs 38 urge the receiving portion 32 to be vertical when not in operation.

Further, the girder jack 1 is formed so as to be contracted by the contracting spring 40b when released from the hydraulic pressure (FIG. 3). FIG. 5 shows another embodiment of the girder jack 1, and the same parts as those in the previous embodiment are designated by the same reference numerals.

In the beam girder jack 1 of this embodiment, a piston 14 and a piston tube 15 screwed to the piston 14 are slidably fitted in a cylinder 2 having a cylinder end 3 attached to a base thereof. The cylinder 2 is provided with an oil supply hole 6 having a filter 6 attached thereto.

An O-ring 23, a piston seal 25, and a bear ring 26 are attached to the outer circumference of the piston 14. A cylinder cap 5 is screwed onto the tip of the cylinder 2, and a dust seal 24 is attached to the inner circumference of the cylinder cap 5.

A piston end 16 is fitted to the tip of the piston tube 15, and an O-ring 23 is attached to the outer circumference of the piston end 16 where the piston tube 15 is fitted.

A supply / drainage coupler 17 is provided on the piston end 16, and the inside of the piston 14 and the piston tube 15 are connected to a pump (not shown) via the supply / drainage coupler 17. There is.

A receiving portion 32 is provided outside the piston end 16, and a conical concave portion 34 is formed outside the piston end 16 and inside the receiving portion 32. The conical concave portion 34 A steel ball 35 is inserted thereinto to form a ball seat 33, and the receiving portion 32 can be tilted in any direction by the ball seat 33.

Further, five hooks 37 are attached to the outer circumference of the tip end portion of the piston tube 15, and between the hooks 37 and the loading piece 36 provided outside the receiving portion 32. A restraining spring 38 is attached, and the restraining spring 38 urges the receiving portion 32 to be vertical when the beam girder jack 1 is not operated.

A ball seat and a restraining spring similar to the ball seat 33 and the restraining spring 38 are also provided outside the cylinder end 3. Further, between the eye nut 8 attached to the bolt 4 attached to the cylinder end 3 and the eye bolt 39 attached to the piston end 16, there is provided a reduction spring 40a for reducing the jack beam jack 1.

FIG. 6 shows the traveling roller 55 traveling on the upper surface of the H-shaped steel uplift 87 shown in FIG. 2, and shows the traveling roller 55 provided on the substrate 48 side. The traveling roller 55 as shown in FIG. 7 may be used.

FIG. 8 shows a truss retaining girder jack of another embodiment. In this embodiment, the traveling rollers 55 are directly provided on the receiving portions 32 provided at both ends of the truss jack 1.

In this embodiment, since the traveling roller 55 is provided in the receiving portion 32, when the retaining wall to be supported is largely inclined, the retaining portion 32 properly supports the retaining wall. Becomes difficult.

The trough retaining jack of the embodiment shown in FIGS. 1 to 4 is contracted as shown in FIG. 3 by the contraction spring 40b when the truss jack 1 is released from hydraulic pressure. The receiving portion 32 is separated from the inner surface of the uprising 87, and the receiving portion 32 is held vertically by the restraining spring (similar to the restraining spring 38 shown in FIG. 5).

Therefore, the traveling rollers 55 provided at both ends of the frame 46 are placed on the reentrant 87 erected inside the earth retaining wall 86 of the excavation groove 85. Next, the moving handle 56 is externally fitted and attached to the protrusion provided on the substrate 48 of the frame 46, and the earth retaining joist jack is raised by using the moving handle 56 at a predetermined position on the 87. And place the earth retaining joist jacks at the specified intervals.

Next, liquid is injected into the truss jack 1, and the truncation jack is extended by the liquid pressure, and the receiving portion 32 is abutted against the inner side surface of the bellows 87 to support the bellows 87. . Further, since the cutting beam jack 1 is hung on the frame 46 by the hanging tool 62, it is held in a straight line even when it is expanded and contracted, and an unreasonable force may be applied to the expansion and contraction mechanism and the liquid tight mechanism of the cutting beam jack. Absent.

Since the reduction spring 40b is provided on the frame 46, the configuration of the beam girder jack 1 becomes simple.

[0043]

[Effect of device]

 According to the present invention, since the traveling roller 55 is provided on the beam girder jack 1, the traveling roller 55 allows the soil retaining sill beam jack to be raised and placed on the soil 87 so that it can be traveled. Beam jacks can now be installed and moved easily and safely.

In addition, when the receiving portion 32 connected to the beam girder jack 1 by the ball seat 33 of the present invention is urged by the plurality of restraining springs 38 in the direction in which the receiving portion 32 becomes vertical, The receiving portion 32 whose posture can be changed according to the inclination of 87 is held vertically by the restraining spring 38 when the truss jack 1 is not operating, and the receiving portion 32 is moved during movement. The tilted end of the receiving portion 32 was prevented from coming into contact with the abdomen 87, and the movement of the earth retaining beam jack was prevented.

Further, the suspending tool 62 is installed on the frame 46 provided with the traveling roller 55 of the present invention so that the suspending tool 62 can be moved by the small rollers 63, and the beam girder jack 1 is attached to the suspending tool 62. When 62 is urged by the contraction spring 40b, the beam girder jack 1 is linearly held at a predetermined position even when it is expanded and contracted, and the expansion and contraction mechanism and the liquid-tight mechanism are not subjected to an unreasonable force. It became possible to prevent damage to the dense mechanism.

In addition, the reduction spring 40b provided on the frame 46 has a simple structure of the beam girder jack 1.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of the present invention.

FIG. 2 is a plan view of an embodiment of the present invention.

FIG. 3 is a front view showing a state in which the cutting beam jack according to the embodiment of the present invention is reduced.

FIG. 4 is a side view of an embodiment of the present invention.

FIG. 5 is a sectional view of a girder jack according to another embodiment of the present invention.

FIG. 6 is a front view of a traveling roller according to an embodiment of the present invention.

FIG. 7 is a front view of another embodiment of the traveling roller of the present invention.

FIG. 8 is a front view of another embodiment of the present invention.

FIG. 9 is a perspective view of an implementation state of a conventional example.

FIG. 10 is a front view of another conventional example.

[Explanation of symbols]

 1 ... Trunk beam jack 32 ... Receiving part 33 ... Ball seat 38 ... Restraining spring 40b ... Reduction spring 46 ... Frame 47 ... Bottom plate 55 ... Traveling roller 62 ... Suspension tool 63 ... Small roller 87 ... Upset

Claims (3)

[Scope of utility model registration request] 1. A receiving portion 32 capable of supporting an inner surface of an abdomen 87 is provided at both ends of the truss jack 1, and the truss jack 1 is provided with an upper portion of both ends of the trellis jack 1. so,
Further, the earth retaining clip jack provided with a traveling roller 55 projecting to the outside of both ends and capable of traveling on the upper surface of the uprising 87. 2. The beam girder jack 1 in which the receiving portion 32 is formed by a ball seat 33.
And a plurality of restraining springs 38 that connect the receiving portion 32 to
The earth retaining beam jack according to claim 1, wherein the receiving portion 32 is urged in a vertical direction to be connected to the beam retaining jack 1. 3. A traveling roller 55 is provided at both ends of the frame 46.
On the frame 46, a suspending tool 62 having a small roller 63 attached to the upper end is installed so that the small roller 63 can move on the bottom plate 47 of the frame 46. , Attach the girder jack 1,
The shredder jack for soil retaining according to claim 1 or 2, wherein the suspending tool 62 is attached to the frame 46 with a reduction spring 40b for urging the suspension girder 1 in a direction to be reduced.