JPH0354180Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to an operating device for earth retaining supports, and more specifically, for example, on the opposing side walls of excavated trenches in which sewer pipes and telephone lines are buried. An earth retaining support that is installed between a pair of horizontal uprights and that aims to maintain the distance between both side walls and prevent earth and sand from collapsing by supplying pressure fluid; and this support. This invention relates to an improvement in an operating device for an earth retaining support, which is comprised of an operating rod for discharging pressure fluid and lifting the support.

[Conventional technology]

The conventional operating device for this type of earth retaining support is
As shown in FIG. 12, the base end of cylinder a;
Pressing plates c and d are respectively attached to the base end of a piston rod b which is slidably engaged with the cylinder a, and these pressing plates c and d are connected to the opposing side walls f and g of the excavated groove e. side walls f, g of the excavated trench e,
It is used to prevent landslides from collapsing. In use, this operating device connects the hose k from the pump to the coupler j provided on the proximal end of the cylinder a.
After injecting pressurized fluid with a pump to tension cylinder a and piston rod b to retain earth in excavated groove e, coupler attachment/detachment section provided with a U-shaped groove for operating rod l as shown in Fig. 13. Remove and set hose k using m (see Fig. 14). After use, push the coupler j with the pressure release part n of the operating rod l to release it, and with the pressure fluid in the cylinder a extracted and contracted, pull the handle hook o of the operating rod l. It was removed by hooking it onto the handle p of the support (see Figure 15).

[Problems to be solved by the invention] However, in the conventional earth retaining support operating device, the coupler attachment/detachment part m, the pressure relief part n, and the handle hook part o provided on the work rod l are formed separately. Furthermore, since each operation of removing the hose k, discharging the pressure fluid, and lifting the support must be performed separately, the work is complicated and requires a lot of man-hours. In addition, when the support is in use, earth pressure is constantly applied to both ends of the support, and the earth and sand at the top of the excavation groove e may collapse and adhere to the coupler j. Therefore, when removing the support, it is necessary to open the coupler. The problem was that it became difficult. In addition, excavation groove e
You can set the support in the
It is said that it is convenient to have handles protruding from both base ends of cylinder a and piston rod b in order to remove the piston from the piston rod. There was a sense of reciprocity. Therefore, it is currently desired to improve earth retaining supports and operating rods that eliminate these inconveniences.

[Means for solving the problem] This idea was created in view of the above circumstances, and in order to solve the upper air problem, a coupler detachable part, a pressure relief part, and a support lifting part are formed at one end of the operating rod. An object of the present invention is to provide an operating device for an earth retaining support, which is characterized in that the support can be removed through a series of operations.

That is, in this invention, pressure plates are attached to the proximal ends of both ends of the cylinder and the piston rod, which are fitted to each other so as to be able to expand and contract, and the injection is carried out via the coupler provided on the proximal end of the cylinder. By expanding due to the pressurization of the pressure fluid,
Both of the above-mentioned pressing plates are engaged with double-sided braces installed horizontally on opposite side walls of the excavation trench, and are connected to an earth retaining support that prevents the collapse of earth and sand on the side walls of the excavation trench, and a coupler of the support. An operation device for an earth retaining support comprising an operation rod for removing a hose for supplying pressure fluid, discharging the pressure fluid, and lifting the support, wherein the support pivotably supports the pressure plate, A pair of upright pieces are provided protrudingly on both left and right sides of the coupler, and a cover having a hook is pivotally supported at the upper end of the pressing plate to be positioned on the coupler, and the operating rod is attached to one end. A horizontal plate for discharging pressurized fluid having a U-shaped groove for controlling the removal of the hose connected to the coupler and means for lifting the hanging body at the other end of the rod-shaped body having a handle portion; It is characterized by comprising a vertical plate projecting from one end toward the tip of the rod-shaped body in a substantially orthogonal shape, and fulcrum pins projecting from both sides of the vertical plate and engaging with the upright pieces. The present invention aims to provide an operating device for earth retaining supports.

In this invention, the hanging body provided on the cover may be any type as long as it is located on the tip side of the cover and does not interfere with the removal of the operating rod hose, the discharge of pressure fluid, and the lifting of the support. A wire rope that can be restored and deformed is preferably provided in a U-shape at the tip of the cover;
Alternatively, it is better to use a U-shaped member provided at the tip of the cover, with the tip unevenly distributed to one side. Further, the means for lifting the above-mentioned hanging body may be formed by the horizontal plate itself as long as it engages with the hanging body when pulling up the operation rod after the pressure fluid discharge operation, but the hanging body In order to ensure the engagement with It is preferable to configure it with a pair of locking protrusions that stand up on both upper surfaces.

[Effect] The above technical means works as follows.

After setting the retaining support in the excavated trench and supplying pressure fluid into the cylinder,
When the U-shaped groove is engaged with the coupler portion of the hose and the operating rod is tilted using the lower end of the vertical plate as a fulcrum, the U-shaped groove engaged with the hose moves upward and the hose is removed. After use, use the operating rod to raise the cover from the coupler side, engage the fulcrum pin with the upright piece of the support, and use the fulcrum pin as a fulcrum to press the horizontal plate onto the coupler. The lower surface comes into contact with the pressure relief part of the coupler and the pressure fluid is discharged, and the reaction force of the earth pressure due to the relative displacement between the press plate and the support acts on the support side, promoting contraction of the support and excavation. A gap necessary for removing the support is secured between the groove and the pressing plate. Then, as the operating rod is pulled up, the lifting means engages with the hanging body to lift the support.

[Example] An example of this invention will be described below based on the drawings.

Fig. 1 is a sectional view of the earth retaining support in the operating device of this invention, and Figs. 2 and 3 are a plan view and a side view of Fig. 1. A cylinder 10 and a piston rod 12 that can fit together, and these cylinders 1
The main part is composed of a pair of pressing plates 14 and 16 that are attached to the base end of the piston rod 12 and the base end of the piston rod 12 via heads 18, respectively.

The piston rod 12 is formed into a tubular shape, and a piston 13 is attached to the tip.
is slidably fitted into the inner peripheral surface of the cylinder 10. In this case, the piston rod 12 is surrounded by an outer pipe 20 disposed coaxially with the piston rod 12. On the other hand, the piston rod 1 is attached to the tip of the cylinder 10.
A dust bushing 22 is fixedly installed in sliding contact with the outer circumferential surface of the outer pipe 2 and the inner circumferential surface of the outer pipe 20 to remove dirt and the like adhering to these surfaces.

A coupler 28 having a check valve used for supplying and withdrawing pressure fluid into the cylinder 10 is connected to the head 18 fixedly installed at the base end of the cylinder 10. A pair of upright pieces 19, 19 are provided in a protruding manner. When supplying pressure fluid to the coupler 28, a high pressure hose (not shown) connected to a pump (not shown) is connected to the coupler 28, and the pump is driven to supply pressure fluid into the cylinder 10. As a result, the cylinder 10 and the piston rod 12 are extended relative to each other, and the distance between both side walls of the excavated groove is maintained. When not in use, a check valve of the coupler 28 is opened by an operating rod 2, which will be described later, so that an appropriate amount of pressure fluid can be discharged and the cylinder 10 and piston rod 12 can be contracted.

The pressing plate 14 is connected to a head 18 that is fixed to the base end of the cylinder 10 and piston rod 12.
It is pivotably supported with a pivot 24 at the.
This pressing plate 14 has a substantially rectangular pressing plate base 14.
It is formed of aluminum casting having overhanging parts 14b extending in the same direction from both side edges and the lower edge of the press plate 14.
A cover 30 protects the coupler 28 from earth and sand by a pivot pin 26 passing through a hole drilled in the hole 4b.
is pivotably mounted to be vertically rotatable or undulating. As shown in FIGS. 4a and 4b, this cover 30 has a pivot portion 30b that passes through the pivot pin 26 at one end of the cover main body 30a, and has mounting holes for the hooks on both sides of the other end. The mounting leg 30c is formed at a certain angle with respect to the cover main body 30a. Reference numeral 30d denotes a pair of guide ribs protruding from the bottom side of the bar body 30a, which protect the operating rod 2 from coming into contact with the pivot pin 26 when setting the operating rod 2, which will be described later. This cover 30 is also made of aluminum casting like the press plate 14 described above. A hanging body is formed by a U-shaped wire rope 50a that is connected to both ends of the cover 30 and is deformable to its original state. In this case, the wire rope 50a is connected to the cover 3
When the cover 30 is in the 0 position lying down, it is located in a substantially horizontal direction, but when the cover 30 is upright, it stands up on the tip side of the cover 30. (See Figure 4 a, b). In addition, the code|symbol 50c is a vinyl tube coat|covered for the protection of the wire rope 50a.

In the above embodiment, the case where the hanging body is formed with the wire rope 50a has been explained, but it is not necessarily necessary to form the hanging body with the wire rope 50a, and as shown in FIGS. The hooking body may be formed of a member 50b such as an aluminum member, which is formed into a shape and whose tip is unevenly located on one side so that an operating rod 2, which will be described later, can be inserted therein. In this case, the member 50b is attached to the cover 30 with the bolt 52.
It can be fixed to the tip of the

Note that a wire rope 50a serving as a hook is also attached to the upper end of the pressing plate 16 attached to the base end of the piston rod 12.

Further, on the pressing side surface of the pressing plate base 14a of the pressing plate 14, a horizontal hooking member 40 that can be locked to a belly riser is fixed with a bolt 42 and a nut 44 so that its position can be adjusted. That is, the pressing plate 14,
16 is provided with a long hole 46 extending in the vertical direction and a parallel guide groove 48 into which the protruding pieces (not shown) of each pressing plate 14, 16 fit into both of the long holes 46. The locking body 40 is vertically adjustable and attached to the press plates 14, 16 by a bolt 42 passing through a hole 46 and a nut 44 screwed to the bolt 42.

FIG. 6 is a side view showing the operating rod in the operating device of this invention, and FIGS. 7 and 8 are rear and bottom views, respectively. The operating rod 2 has a foldable handle 60 at one end. The other end of the curved rod-shaped main body 62 has a U-shaped groove 64 for removing the hose, and the horizontal plate 66 for discharging pressure fluid, which forms a lifting means 70 for the hanging body, is connected from one end to the tip side of the rod-shaped main body 62. a vertical plate 68 protruding almost perpendicularly toward the vertical plate 68;
9, and a fulcrum pin 72 that can come into contact with the fulcrum pin 72. In this case, the lifting means 70 is formed on the upper surface side of the horizontal plate 66, and the lifting means 70 is formed on the upper surface side of the horizontal plate 66.
(9th
(see figure). A pair of horizontal portions 71 and a contact portion 73 fixed to the back surface of the vertical plate 68 are provided below these locking rods 70a.

The lifting means 70 does not necessarily need to be composed of a horizontal plate 66 and a locking rod 70a, but as shown in FIG. 70b, 70b
It may be composed of In this case, the contact portion 73
Alternatively, the contact portion 73' may be formed by curling the lower end of the vertical plate 68 toward the back side.

In order to use the earth retaining support 1 of this invention configured as described above, it is necessary to hold it with a hanging body (wire rope 50a or member 50) erected from the pressing plate 14, or hang it with a rope and attach it to an excavated groove. An earth retaining support 1 is disposed between the ramps installed on the sheet piles driven over almost the entire surface of both side walls of the tank. Then, when the pump is driven after connecting the high pressure hose connected to the pump to the coupler 28,
Since pressure fluid is supplied into the cylinder 10, the cylinder 10 and the piston rod 12 expand relatively, and both the pressing plates 14 and 16 lock and abut on the ribs, thereby reducing the distance between the ribs. At the same time, the collapse of the earth and sand on both side walls 41 is prevented. In this state, the U-shaped groove 64 of the horizontal plate 66 of the operating rod 2 is engaged with the coupler portion of the hose, and the operating rod 2
When tilted, the U-shaped groove 64 engaged with the hose moves upward and the hose is removed. Then, the cover 30 is laid down on the head 18 side to protect the coupler 28 from earth and sand. In addition, when removing the earth retaining support 1, as shown in FIG.
Penetrate the vertical plate 68 into the U-shaped portion of the hanging body 50a, raise the cover 30 from the coupler side, and bring the fulcrum pins 72, 72 into contact with the vertical surfaces of the upright pieces 19, 19 of the support 1. Fulcrum pin 7
By pressing the horizontal plate 66 toward the coupler (in the direction of the arrow in FIG. 11) using 2 and 72 as fulcrums, the lower surface of the horizontal plate 66 comes into contact with the check valve, which is the pressure relief part at the upper end of the coupler 28, and the pressure is released. At the same time as the fluid is discharged, the contact portion 73 presses against the press plate 14, so that the reaction force of the earth pressure due to the relative displacement between the press plate 14 and the support 1 acts on the support 1 side, causing the support 1 to contract. As a result, a gap necessary for removing the support 1 is secured between the excavated groove and the pressing plate 14. Then, when the operating rod 2 is pulled up, when the hanging body is the wire rope 50a, the wire rope 50a located above the tip of the cover 30 is moved by its restoring force to the lifting means as the operating rod 2 is pulled up. 70
The support 1 is lifted by engaging with the support 1.

Note that when the hanging body is a U-shaped member 50b, the unevenly distributed portion at the tip engages with the lifting means 70 as the operating rod 2 is pulled up, and the support 1 is lifted in the same manner. .

[Effects of the invention] As explained above, according to the operating device for the earth retaining support of this invention, the support pivotably supports the pressing plate, and the support is provided on the left and right sides of the coupler provided on the cylinder side of the support. A pair of upright pieces are provided protruding from the top and a cover having a hook at the upper end of the pressing plate is pivotally supported to be positioned on the coupler. At the other end, there is a U that controls the removal of the hose connected to the coupler.
A horizontal plate for discharging pressure fluid having a groove and a means for lifting a hanging body, a vertical plate protruding from one end of the horizontal plate almost perpendicularly toward the tip end of the rod-like body, and both sides of the vertical plate. Since it is provided with a fulcrum pin that protrudes from and engages with the upright piece, the following effects can be obtained.

(1) After the construction is completed, the pressure fluid discharge work and the support lifting work can be performed consecutively in the same position, making the work faster.
It is possible to improve the efficiency of earth retaining work without requiring any skill.

(2) Since the upper part of the coupler is protected by a cover placed in a prone position during use, it is possible to prevent dirt from adhering to and accumulating on the coupler, and there is no risk of hindrance during operation, and there is no risk of failure. disappears.

(3) When the pressurized fluid is discharged, the reaction force of earth pressure due to the relative displacement between the press plate and the support acts and promotes the contraction of the support, so there is a gap between the excavation groove and the press plate that is necessary for removing the support. This makes it easy to remove the support from the excavated groove.

(4) Since it has a simple configuration, it can be manufactured at low cost.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view of the support in the earth retaining support operating device of this invention, Figs. 2 and 3 are respectively a plan view and a side view of Fig. 1, Fig. 4a,
b is a plan view and a side view of the hanging body in this invention, Figures 5a and b are a plan view and a side view of another hanging body in this invention, and Figure 6 is a side view of the operating rod in this invention. 7 and 8 are respectively a rear view and a bottom view of FIG. 6, FIG. 9 is a perspective view showing the waist part of the operating rod, and FIG. 10 is a perspective view showing the main parts of another operating rod, Fig. 11 is a side sectional view showing how the operating device of this invention is used, Fig. 12 is a sectional view showing how the conventional earth retaining support is used, Fig. 13 is a side view showing the conventional operating rod, and Fig. 14 is a sectional view showing how the operating device of this invention is used. Figure and 1st
FIG. 5 is a schematic cross-sectional view showing the operating state of the conventional earth retaining support operating device. Explanation of symbols, 1... Earth retaining support, 2... Operating rod, 10... Cylinder, 12... Piston rod, 14, 16... Pressing plate, 19... Upright piece, 2
6... Pivot pin, 28... Coupler, 30... Cover, 50a... Wire rope (hanging body), 50
b...U-shaped member (hanging body), 60...handle part,
62... Rod-shaped main body, 64... U-shaped groove, 66... Horizontal plate, 68... Vertical plate, 70... Lifting means, 7
0a...Latching rod, 70b...Latching protrusion, 72...
Fulcrum pin.

Claims (1)

[Claims for Utility Model Registration] (1) A cylinder and a piston rod, which are fitted to each other so as to be able to expand and contract, and a piston rod, each having a pressing plate attached to the base end thereof, are provided at the base end of the cylinder. By being expanded by the pressurization of the pressure fluid injected through the coupler, the above-mentioned pressing plates are engaged with both side risers installed horizontally on the opposite side walls of the excavation groove, and the side walls of the above-mentioned excavation groove are An operating device for an earth retaining support consisting of an earth retaining support that prevents the collapse of earth and sand, and an operating rod that controls the removal of a pressure fluid supply hose connected to the coupler of the support, the discharge of the pressure fluid, and the lifting of the support. In this case, the support pivotably supports the pressing plate, and has a pair of upright pieces protruding from both left and right sides of the coupler, and is hooked to an upper end of the pressing plate to be positioned on the coupler. The operation rod has a handle portion at one end and a U-shaped groove for controlling the removal of the hose connected to the coupler, and a U-shaped groove for controlling the removal of the hose connected to the coupler, and the operation rod has a handle portion at one end. a horizontal plate for discharging pressure fluid having a lifting means; a vertical plate protruding from one end of the horizontal plate almost perpendicularly toward the distal end of the rod-shaped body; and a vertical plate protruding from both sides of the vertical plate; An operating device for a retaining support, comprising a fulcrum pin that engages with an upright piece. (2) The operating device for an earth retaining support according to claim 1, wherein the hanging body is a wire rope that is provided in a U-shape at the tip of the cover and can be restored and deformed. (3) The operating device for an earth retaining support according to claim 1, wherein the hanging body is a U-shaped member provided at the tip of the cover and whose tip is unevenly distributed on one side. (4) The earth retaining device according to claim 1 of the utility model registration claim, in which the means for hoisting the hanging body comprises a horizontal plate and a pair of locking rods extending upward from both sides of the horizontal plate from the tip of the vertical plate. Support operating device for use. (5) Operation of the earth retaining support set forth in claim 1 of the utility model registration claim, in which the means for lifting the hanging body comprises a horizontal plate and a pair of locking protrusions that stand up on both sides of the horizontal plate. Device.