JPH02128094A - Foot pusher for press-fit soil non-moving type pipe-body burying machine - Google Patents

Abstract

PURPOSE:To conduct operation automatically by installing a positioning lever to a movable carriage, in which front and rear section movable trucks are connected by hydraulic cylinders, and receiving reaction generated at the time of the operation of the expansion and contraction of the hydraulic cylinders by grooved rails. CONSTITUTION:When a pipe body 3 is pushed against and mounted to the front end of a front section movable truck 5 and the piston rod of a hydraulic cylinder 10 is elongated in the direction of the inside of soil, the front section movable truck 5 is moved in the direction of the inside of soil. Reaction generated at the time of movement is received by grooved rails 4, with which the noses of positioning levers 8' are engaged, while the movable truck 5 is ridden across protrusions 4' among the grooves of the grooved rails 4 against the force of push pressure and shifted. The pipe body 3 is pushed into soil and stopped, and the front end of the front section movable truck 5 and the pipe body 3 are separated. Accordingly, front and rear movable trucks 5, 12 are moved before and behind by the operation of the expansion and contraction of the hydraulic cylinder, and the movable trucks can be shifted without human working.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a moto-push Vi installation for pushing and propelling a large earth-less pipe burying machine into the soil.

(Prior art) When burying small-diameter pipes such as electric wire conduits, water supply and sewage pipes, and gas pipes in the soil, the conventional methods were to excavate to a predetermined depth from the ground and bury the pipes, or Instead of excavating from the ground level, a suitable pit is provided, or in places where there is no need to provide a pit due to topography, the method is to excavate or perforate in a predetermined direction from one side and bury the pipes one after another. .

However, in recent years, a press-in, no-earth removal method for burying pipes has been developed, in which the pipes are buried one after another while pushing the main body of the pipe burying machine into the soil and propelling it, instead of using the conventional method of excavating and discharging earth and sand. has begun to be adopted.

FIG. 5 is a schematic explanatory diagram of a press-in, non-discharge type tube burying method using such a tube burying machine.

A pit (p) is dug in the soil, and the main push device 1 (100) is installed in the pit (p). 002) is a tube burying machine, and (112) is a hydraulic cylinder of the tube burying machine (+02). The hydraulic pressure increases and the hydraulic cylinder (+12) extends in the direction of the arrow in the figure and presses into the soil. The reaction force due to this press-fitting operation is the original push device i! ffi (100) moving body (
lot), the movable body (+01) of the original pushing device (100) moves in the direction of the arrow by the length of the hydraulic cylinder (■2), and the pipe body burying machine (102) and the pipe following it move. body(
103) are successively injected into the soil without soil removal. In the drawings, (104) is a hydraulic power source, (+14) is a hydraulic hose, (105) is an operation panel, and (+15) is a control signal cable.

FIG. 6 is an explanatory view of a conventional extrusion device, in which (a) is a top view and (b) is a side view.

In the drawing, (201) is the frame of the device, (202
) is the front slide base, (203) is the rear slide base, (204) is the positioning pin, (205) is the hydraulic cylinder, (al) to (^5) are the positioning holes, which are the same as the slide base (202) above. Rear slide base (2
03) is connected with a hydraulic cylinder (205),
It is movably supported by the frame (201) of the device.

Next, the operation of the above-mentioned conventional extrusion device will be explained.

As shown in Figure 6, when the hydraulic cylinder (205) is extended with the rear slide base (203) and frame (201) connected and fixed with the positioning pin (204), the front slide base (202) Move in the direction of the arrow. After that, remove the positioning pin (204) and insert it into the positioning hole (6LZ), and the front slide base (204) will be inserted into the positioning hole (6LZ).
2) and the frame (201) is the positioning pin (204).
) is connected and fixed.

Next, when the hydraulic cylinder (205) is retracted, the rear slide base (203) moves in the direction of the arrow, pulls out the positioning pin (204) from the positioning hole (cL2), and inserts it into the positioning hole (^1). This allows the rear slide base (203) and the frame (101) to be connected and fixed.

In this way, the front slide base (202) and the rear slide base (203) are connected to the hydraulic cylinder (20
It can be moved sequentially in the direction of the arrow by the expansion/contraction operation in 5). Front and rear sliding base (202) (2
03) is moved to the front end of the frame (201) of the main pusher and then moved to the rear end of the frame (2G+) of the main pusher in the same manner as described above.

(Problems to be Solved) In the above-described conventional pusher, the positioning pin (204) is attached to the frame (201) as a means for sequentially moving the front slide base (202) and the rear slide base (203). The workability is poor in that the insertion and removal operations have to be repeated into the positioning holes (a+) to (^5) of there were.

(Means for Solving the Problems) The present invention provides a movable device which solves the above-mentioned problems, and is characterized by a movable body in which a front movable dolly and a rear movable dolly are connected by a hydraulic cylinder; The movable body is supported so as to be movable in the front and back direction by wheels provided on the movable body side and grooved rails provided on the frame of the device, and is always tilted in one direction by the moving carts at the front and rear of the movable body. A positioning lever is provided that has the function of maintaining the position, and this engages with the groove of the grooved rail.The front and rear movable carts are separated by the extension action of the hydraulic cylinder 7 inside the movable body, and the hydraulic cylinder The structure is such that the grooved rail receives the reaction force generated when each of the movable trolleys moves when the movable trolleys move toward each other due to the contraction operation of the movable trolleys.

FIG. 1 is an explanatory diagram of a specific example of the original pushing device of the present invention.
A) is a side view, and FIG.

In the drawing, (!) indicates the upper guide roller of the pipe body (3), (2) indicates the lower guide roller of the pipe body (3), and the upper and lower guide rollers (+) (2) indicate that the pipe body (3) is underground. It serves as a guide when being pushed into the room. (4) is a grooved rail, (5) is a front moving truck, (6) is its wheel, and the wheel (6) is fitted in the grooved rail (4) in the radial direction, and - It is attached to the front movable trolley (5) by a rotating shaft. (8) is a positioning lever, which is attached to the front moving platform II (5) by a shaft, and is pressed by a push spring (
9), and the tip of this positioning lever (8) engages with the groove of the grooved rail (4).

(10) is a hydraulic cylinder, and this hydraulic cylinder 00
) The piston rod side is the rotating shaft (7) and the front moving trolley (
5), and the rear part of the hydraulic cylinder (IO) is attached to the rear moving carriage* (121) by the rotating shaft (II), thereby connecting the front moving carriage (5) and the rear moving carriage (! 2) are connected via a hydraulic cylinder (10).

Similarly to the front movable trolley (5), the rear movable trolley (12) has a structure in which wheels (6'), a positioning lever (8'), and a push spring (9') are respectively attached. ing.

Fig. 1 (B) shows the cross-sectional structure of the front movable trolley (5), and shows the relationship in which the trapezoidal circumferential groove of the wheel (8) fits into the trapezoidal protrusion of the grooved rail (4). The figure also shows that the positioning lever (8) is located in the center of the wheel (6), and that the tip of this lever (8) is engaged with the groove of the grooved rail (4). .

Further, the cross-sectional structure of the rear movable trolley 02) is also the same as that of the front movable trolley (5) shown in FIG.

FIGS. 2(A) to 2(F) are explanatory diagrams of the operation of the front movable truck constituting the main pushing device of the present invention. Further, FIG. 3 (0) (b) is a detailed structural diagram of the positioning lever (8), and FIG. 4 (a) (b) is an explanatory diagram of its operation.

(Function) Figure 1 shows the state in which the front moving cart (5) and rear moving cart (12) of the main pushing device start pushing the pipe body (3) into the soil. ) is the upper guide roller (+
1 and a lower guide roller (2), and is pressed against the front end of the front movable trolley (5).

Figure 2 (A) is a diagram showing the state in the middle of the operation of the front moving carriage (5).As the piston loft of the hydraulic cylinder (10) increases in the direction of the arrow, the front moving carriage (5) similarly moves in the direction of the arrow, so the tip of the positioning lever (8) attached to the front moving trolley (5) resists the pressing force of the push spring (9) and moves on the grooved rail (4). It climbs over the protrusion (4') between the grooves.

At this time, the reaction force generated when the front moving trolley (5) operates is:
The tip of the positioning lever (8') of the rear movable trolley (12) is received by the engaged grooved rail (4). Therefore,
As the front moving trolley (5) moves in the direction of the arrow using the hydraulic cylinder (10) as a drive source, the pipe body (3) is pushed into the soil, and this occurs during this pushing operation. The reaction force is transmitted to the grooved rail (4) via the positioning lever (8') of the rear movable truck (!2), and is received by the grooved rail (4).

, Fig. 2 (b) shows that the hydraulic cylinder (10) reaches its limit of extension and the positioning lever (
After the tip of the positioning lever (8) got over the protrusion (4'') of the grooved rail (4), the tip of the positioning lever (8) engaged with the grooved rail (4) due to the pressing force of the push spring (9). Indicates the condition.

Therefore, the front movable trolley (5) is in a state of moving forward by one pitch of the groove pitch of the grooved rail (4) and stopping.

In Fig. 2 (c), the rear movable trolley (12) is connected to the hydraulic cylinder (
The piston rod (10) is retracted in the direction of the arrow to move it forward by one groove pitch of the grooved rail (4), and the tip of the positioning lever (8') is moved forward by one groove pitch of the grooved rail (4). ) is shown in a state in which they are engaged over the protrusion (4').

At this time, the reaction force generated during operation of the rear movable trolley (12) is received by the grooved rail (4) with which the tip of the positioning lever (8) of the front movable trolley (5) is engaged.

Above, we have explained how the front movable trolley (5) and rear movable trolley (12) move forward due to the expansion and contraction action of the hydraulic cylinder (10) and push the pipe body (3) into the soil. After repeating this operation, the front moving trolley (5
) and the rear moving trolley (+2) are moved to the front end of the main push device and then moved rearward (see Figure 2).
Explain by quoting ~(to).

Figure 2) shows the front moving trolley (5) and the rear moving trolley 02).
The figure shows the state in which the main pusher has moved to the front end of the pusher.

From this state, the front moving trolley (5) and the rear moving trolley (1
2) to the rear, use the position lever (8) (8
') is reversed by human operation in the opposite direction from the forward movement.

Figure 2 (e) shows the hydraulic cylinder (10
) is extended and operated in the direction of the arrow in the figure, the rear movable trolley (12) moves rearward, and the tip of the positioning lever (8') of the rear movable trolley (12) aligns with the grooved rail (4). ) is shown engaged. At this time, the reaction force generated during operation of the rear moving carriage (12) is received by the grooved rail (4) with which the tip of the positioning lever (8) of the O1I section moving carriage (5) is engaged.

The hydraulic cylinder (1o
) when the piston rod is contracted in the direction of the arrow,
The front moving trolley (5) moves rearward, and the front moving trolley (5) moves backward.
The tip of the positioning lever (8) of 5) is attached to the grooved rail (4).
) is shown engaged.

In this state, the front end of the front moving trolley (5) and the tube body (
3) Separate from. At this time, the reaction force generated when the front movable trolley (5) moves is applied to the grooved rail (4) with which the tip of the positioning lever (8') of the rear movable trolley (I2) is engaged.
Receive it at

Thereafter, by repeating the same operation, the front movable trolley (5) and the rear movable trolley (I2) move to the rear end of the main pusher and stop, resulting in the state shown in FIG.

Figure 3 is an explanatory diagram of the mechanism of the positioning levers (8) (8').
'This is an arrow view.

The illustrated state shows the horizontal positioning of the positioning lever (8) (8'), and the shaft (17) integrated with the lever rotates the front movable carriage i1 [(5) and the rear movable carriage (I2). It can be installed freely. A hexagonal boss (+7') is integrated into one end of the shaft (17), and a box spanner is inserted into this and the positioning lever (8) is manually operated.
) (8').

The push spring (9) (9') is fitted into the spring shaft (+3), and the spring receiver, which is rotatably supported by the positioning lever (8) (8') with the shaft (summer 5), is fitted into the block ( +4) and is constantly compressed. Further, the spring shaft (13) and the spring bearing pass through the center of the block (14), and are attached so as to be freely movable in the vertical direction. On the other hand, the spring shaft (13) has a U-shaped groove on the opposite side of the spring receiver block (+4), and is rotatably rotated around the rotating shaft (IG). is the front moving trolley (
5) and the rear movable trolley (I2).

Figure 4 (a) shows the positioning lever (8) (8') tilted upward to the right, and the pushing spring (9)
) (9') maintains this state. This state of the positioning levers (8) (8') is set when moving the front moving carriage (5) and rear moving carriage (12) of the main pusher of the present invention forward.

Figure 4 (b) shows the positioning lever (8) (8') tilted upward to the left, and the pushing spring (3)
) (9') maintains this state. This state of the positioning levers (8) (8') is set when moving the front moving carriage (5) and rear moving carriage (12) of the main pushing device of the present invention rearward.

(Effects of the Invention) As explained above, according to the main pushing device of the present invention, the front movable trolley and the rear movable trolley, which play the role of pushing the pipe into the soil, When the cylinder moves forward and backward due to the expansion and contraction motion, the positioning lever attached to each truck engages with the grooved rail and stops at the fixed position, which is different from the conventional main push device. This eliminates the need for human work to connect and fix the frame and slide base before moving the front slide base and rear slide base, and to insert and remove the positioning pin into the positioning hole to release the connection. Therefore, it is possible to operate automatically, and the problems of the conventional pusher can be solved.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of a specific example of the original pushing device of the present invention.
A) is a side view, and FIG. FIGS. 2(A) to 2(F) are explanatory views of the operation of the front movable trolley and the rear movable trolley that constitute the main pushing device of the present invention. Figure 3 is a configuration diagram of the positioning lever that plays the role of positioning the front and rear movable carts. This is a perspective view. Figure 4 (A) and (→ are both explanatory diagrams of the operation of the positioning lever in Figure 3. Figure 5 is an explanatory diagram of the press-in, no-earth removal type pipe burying method using a pipe burying machine. Figure 6 is an explanatory diagram of an example of a conventional extrusion device;
is a top view, and (o) is a side view. ■... Upper guide roller, 2... Lower guide roller, 3... Pipe body, 4... Grooved rail, 5... +]
ri section moving table d (, 6... small wheel, 7... rotating shaft, 8.
8'...Positioning lever 9.9'...Press spring, 1
0... hb pressure cylinder, 11... rotating shaft, 12...
- Rear moving trolley. vl Diagram (b) Math 4 diagram (in 8 (8') 'L6 diagram (a)

Claims (1)

[Claims] (1) A moving body in which a front movable dolly and a rear movable dolly are connected by a hydraulic cylinder.The movable body is supported so as to be movable in the front and rear direction by wheels provided on the movable body side and grooved rails provided on the frame of the device. The front and rear movable carts are provided with positioning levers that have the function of keeping them always tilted in one direction, and these levers are engaged with the grooves of the grooved rails, thereby controlling the hydraulic pressure inside the moving object. When the front and rear movable trolleys move apart due to the extension action of the cylinder, or when the movable trolleys move closer together due to the contraction action of the hydraulic cylinder, the reaction force generated when each trolley moves is absorbed by the groove through the positioning lever. A push-in device for a press-in, non-discharge type pipe body burying machine, characterized in that it is configured to be received by a rail.