JPS61136079A - Laying device for pipe - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (Industrial Application Field) This invention provides: - A pipe laying method for sequentially adding and laying buried pipes in an excavated trench in the cut-and-cover method of water and sewerage pipe construction. Regarding equipment.

(Prior art and its problems, etc.) Conventionally, in the cut-and-cover method of sewerage pipe construction, the work of laying a buried pipe in an excavated trench was carried out after the pipe was lifted into the trench using a crane, etc. It was common for a large number of workers to go into the trench and directly lift the pipe and add it. In some cases, tools such as levers, hawks, winches, and flywheels were used to add pieces.

In any case, the reality is that the work has traditionally been done manually, which is time-consuming and inefficient. Not only that, but because workers must enter the narrow premises to work, there is a risk of the trench collapsing, which can be extremely dangerous depending on how the pipes are handled.

(Objective of the Invention) Therefore, the object of the present invention is to mechanize all the work of laying pipes in the trench, thereby making it possible to save labor and perform unmanned construction.
It is an object of the present invention to provide a pipe laying device having a structure that allows all work to be carried out on one side (outside the trench) and to ensure work safety.

(Structure of the Invention) In order to achieve the object described in item 1, the pipe laying device of the present invention has the following features: (b) a pin-hinged frame formed by rotatably connecting a pair of frame pieces with pins whose posture is controlled by remote control by means such as the above, and (b) installed with a rotation axis substantially perpendicular to the pin-hinged frame. (c) a beam attached substantially horizontally to the rotating shaft of the swing motor; and (d) a beam that is disposed at one end of the beam and is movable by a predetermined stroke in the longitudinal direction of the beam. (e) a fixed clamp part that grips the pipe opening of the existing buried pipe; a movable clamp part that grasps the pipe opening of the buried pipe and moves a predetermined stroke in the longitudinal direction of the buried pipe gripped by the fixed clamp part to fit and fasten the pipe ports of both pipes; and the movable clamp part. and a pipe fastening section suspended from the other end of the beam.

(Example) To explain in more detail with an example, Fig. 1 is a schematic diagram of the procedure when installing a pipe into a trench using the pipe installation device of the present invention in the cut-and-cover method of water and sewerage pipe construction. It shows.

In the figure, 1 is a drive vehicle using a small backhoe or the like, 2 is a pipe laying device that is supported by being attached to the tip of the bendable boom 3 of the drive vehicle 1 and is remotely controlled, 4 is an excavated groove, and 5 is a groove An earth retaining board 4 prevents the collapse of the pipe, and a new buried pipe 6 caught by the pipe installation device 2 (however, it may also be simply referred to as a pipe.

The same applies hereafter), 6', . . . are already buried pipes that have been laid and buried in the backfill soil 7.

The drive vehicle 1 is a self-propelled vehicle, and is arranged outside the groove 4 or so as to straddle the groove 4, as shown in FIG. Then, the pipe 6 temporarily placed on the ground is grabbed by the pipe laying device 2,
The pipe is carried into the trench 4, the installation position is determined, and the existing buried pipe 6'
Carry out handling that concludes the process. It supplies the necessary power source to the pipe laying device 2.

FIG. 3 shows the configuration of the pipe installation device 2 in detail.

In the figure, A indicates the entire pin-hinged frame A.

The main elements are an upper frame 11 and a lower frame 12, which are connected at one end by a substantially horizontal pin 10 and are vertically rotatable. A piston rod 14a of a hydraulic jack 14 (stroke of about 180 mm) for attitude control, which is attached to the other end of the upper frame 11 with a pin 1'3, is connected to the same end of the lower frame 12 with a pin 15. There is. In other words, the hydraulic jack 1 is remotely controlled from the driving vehicle 1 and the other force 1.
4, the paired upper frame 11 and lower frame 12 are rotated about the pin 10.

By the way, the two tip members 3a and 3b constituting the boom 3 of the driving vehicle 1 are the same as those of the frame 11, respectively.
It is connected to a position near the second class by pin IB.

That is, the upper frame 11 has its attitude controlled by the boom 3, and the lower frame 12 rotates with respect to the relatively stationary frame 11 by the expansion and contraction of the hydraulic jack 14, and its inclination angle (attitude) is controlled. In the figure, 20 is a swing motor for horizontal rotation. This is installed on the lower frame 12 constituting the pin hinge type frame A in such a manner that its rotation axis 21 is directed vertically downward. A substantially horizontal beam 22 having a length of approximately 1.5 m has a central portion fixedly attached to the rotating shaft 21 . beam 2
As shown in Figure 4, the cross-sectional shape of No. 2 is width x height =
BOX It is approximately 60mm in size and has an approximately C-shaped steel shape with a downward opening.

23 in the figure is a stopper installed on the lower surface of the lower frame 12. This is because the receiver installed at the corresponding position on the upper surface of the beam 22 comes into contact with the tool 24, which causes the beam 22 to rotate 360°.
Control over turns.

Next, in the figure, B is a tube clamp part suspended from the left end side of the beam 22, and C is a pipe fastening part suspended from the right end side of the beam 22.

As shown in detail in FIG. 4, the tube clamp section B is centered on a pair of symmetrical clamp pieces 40 and 40' that grip the tube 6, for example, about 210 mm in diameter, from both sides. The pair of clamp pieces 40, 40' are rotatably attached to the box-shaped frame 42 by pins 41, 41' at symmetrical positions on the upper and inner sides thereof. A hydraulic jack 44 (stroke 4) attached to the upper end of the clamp piece 40 with a pin 43
A piston rod 44a (approximately 0 mm) is connected to the upper end of the other clamp piece 41' by a pin 45.

In other words, the hydraulic jack 4 is remotely controlled from the driving vehicle 1, etc.
4, the pair of clamp pieces 40, 40' are opened and closed around the pins 41, 41', thereby gripping and releasing v6.

In the figure, 46 is a tube gripping butt attached to the lower inner surface of each clamp piece 40, 40', and 47 is a box-shaped frame 42.
This is a bat attached to the bottom center of the . The tube 6 is held by these three butts 4B and 47.

A bracket 48 protruding from the center of the upper surface of the box-shaped frame 42 is connected to the main frame 50 of the movable platform D (FIG. 4) installed in the hollow part of the beam 22 by a pin 49 and suspended.

Regarding the movable platform, as shown in detail in FIGS. 4 and 5, two running rollers 51 at the front and rear that ride on the bottom surface of the hollow part of the beam 22 are mounted on the head of the main frame 50 in the form of a vertical T-shaped plate. ．．
51 and a steady rest roller 52 that touches the same ceiling surface. The main frame 50 is guided downward through the downward opening 53 of the beam 22.

In other words, the tube clamp section B, together with the moving table 50,
As many strokes as necessary in the longitudinal direction of 2 (e.g. 120
~140mm) is freely movable back and forth.

In the figure, 54 is a stopper pin that prevents the movable platform from jumping out from the left end of the beam 22 in FIG. 3, and 55 is an angle that reinforces the lower side of the hahim 22.

As shown in FIGS. 1 and 2, this pipe clamp part B grips a position closer to the center of the newly buried pipe 6 than the pipe opening.

Next, as shown in detail in FIGS. 6 to 8, the pipe fastening part C includes a fixed clamp part E that grips the pipe opening of the existing buried pipe 6', and a movable clamp part E that grips the pipe opening of the newly buried pipe 6. The clamp part F forms the center.

As shown in FIG. 7, the fixed clamp part E has a diameter of φ.
A pair of downwardly directed clamp pieces 60, 60' that grip the buried pipe 6' at position 210 from both sides form the center. Each clamp piece 60.80' is rotatably attached to the frame plate 82.62 by a pin 60.60' at a symmetrical position on the inner side thereof. A hydraulic jack 63 (stroke 4
0mm) is attached to the other clamp piece 60.
' with a pin 65 at the upper end. The frame plates 62, 62 are arranged to sandwich both sides of the pair of clamp pieces 60, 60', and are fixed by welding to a frame frame 80 assembled into a box shape by welding steel plates.

Therefore, the hydraulic jack 6 remotely controlled from the driving vehicle 1 etc.
3, the pair of clamp pieces 60 and 60' are opened and closed, thereby gripping and releasing the tube 6'.

In FIG. 7, 66 is a butt attached to the lower inner surface of each clamp piece 60, 60', 67 is a butt attached to the lower surface of the frame 65, and the tube 6' is gripped by these three butts 66, 67. be done. On the other hand, the movable clamp F is
As shown in FIG. 8, a pair of downwardly directed clamping pieces 70, 70' are also centered. Each clamp piece 70.70'
is rotatably attached to the movable frame 72 with pins 71 and 71' at symmetrical positions on the upper inner side. A piston rod of a hydraulic jack 74 (stroke of about 40 mm) is attached to the upper end of one clamp piece 70 with a pin 73, and a pin 73 is attached to the upper end of the other clamp piece 70'.
They are connected by 5.

Therefore, the pair of clamp pieces 70 and 70' are opened and closed by the expansion and contraction of the hydraulic jack 74, and the pipe 6 is thereby gripped and released.

In FIG. 8, 76 is a bat attached to the lower inner surface of each clamp piece 70, 70', and 77 is a bat attached to the lower surface of the movable frame 72.

By the way, the movable frame 72 is movable along a guide rod 78 disposed in the left half of the box-shaped frame 80 in FIG.

The guide rod 78 consists of three pieces of wood, two pieces on both sides of the upper part and one piece in the center of the lower part, and each guide rod 78 extends in the longitudinal direction of the frame 80 (
They are arranged parallel to each other in the left-right direction in FIG. 6, and are fixedly supported at both ends. The total length of the guide rod 78 is approximately 380 mm. The movable frame 72 has a guide sleeve 79 that slides on each guide rod 78, and the movement stroke of the movable frame 72 is set to about 130 mm. This stroke is a distance for fitting and fastening the pipe ports of the new buried pipe 6 and the existing buried pipe 6' to each other.

Next, 80 in FIG. 6 is for moving a movable clamp part installed on the left end surface of the frame frame 80 in a direction parallel to the longitudinal direction of the center line of the tube 6 gripped by the guide rod 78 and the movable clamp part F. This is a hydraulic jack. The stroke is about 145 mm, and the tip of the piston rod 81 is connected to the movable frame 72 with a pin 82.

That is, the movable clamp part F is reciprocated by the hydraulic jack 90 as necessary.

A bracket 81 is protruded from the upper surface of the frame 80 at a position above the road of the center of gravity, and the bracket 81 is connected to a hanger 82 fixed to the beam 22 with a pin 83, thereby forming the above-mentioned pipe fastening section C. is suspended from the right end of the beam 22 in FIG.

(Operation and Effect) In short, according to the pipe laying device 2 of the present invention, the drive vehicle 1
The operator causes the pipe opening part of the newly buried pipe 6 temporarily placed on the side of the groove 4 to be grasped by the movable clamp part F of the pipe fastening part C, and at the same time, the pipe clamp part suspended independently from the beam 22 is held. At B, have the user grasp the newly buried pipe 6 at a position slightly closer to the center. Then, by manipulating the position of the drive vehicle 1 and its boom 3, the pipe 6 is brought into the groove 4 and added to the pipe opening of the already buried pipe 6' (FIG. 2).

At this time, the gripped tube 6 is oriented parallel to the groove 4, and
In order to align the center line with the existing buried pipe 6', the swing motor 20 is operated to swing the beam 22. Further, in order to correct the height difference between the mouths of the two pipes 6, 6' (to level the newly buried pipe 6), the hydraulic jack 14 is operated to tilt the beam 22.

To connect the pipes to each other, first, the fixed clamp part E of the pipe fastening part C grasps the pipe opening of the buried pipe 6', and then the center lines of both pipes 6 and 6' are aligned as described above.
The hydraulic jack 90 is extended. Then, the movable clamp part F moves forward to the right in FIG. 3, and the new buried pipe 6 that it grips is inserted into the immovable existing buried pipe 6' that is gripped by the fixed clamp part E and is strongly fastened. become. At this time, the pipe clamp part B, which is also gripping the newly buried pipe 6, moves to the right on the beam 22 together with the movable clamp part F, thereby enabling the above-mentioned fastening operation to be performed smoothly.

The above pipe installation work can be carried out by the operator of the driving vehicle 1 alone while visually checking from above the groove 4.
No need to go inside. Therefore, the work in the ditch can be done unmanned, and the safety is that much higher.

In addition, all the work can be done by mechanization, which saves labor and is highly efficient. Furthermore, the mutual fastening force between the pipes can be controlled at a constant level using hydraulic pressure, and construction quality can be ensured. It is also possible to reduce construction costs.

[Brief explanation of the drawing]

Figures 1 and 2 are work flow diagrams using the pipe laying device of the present invention, Figure 3 is a front view of the pipe laying device, Figure 4 is a detailed side view of the pipe clamp section, and Figure 5 is a detailed diagram of the pipe laying device. FIG. 6 is a detailed front view of the tube clamp portion, and FIGS. 7 and 8 are cross-sectional views taken along arrows 1--2 and 2--2 in FIG. 6.

Claims (5)

[Claims] (1) (A) A pin-hinged frame (A) that is attached to and supported by the tip of the boom (3) of the driving vehicle (1) and whose posture is controlled by a jack (14); (b) the pin-hinged frame (A); (c) a swing motor (20) for horizontal rotation installed so as to have a rotation shaft (21) substantially perpendicular to the swing motor (20); (d) a beam (22) on one end side of the beam (22);
(E) A fixed clamp part (E) that grips the pipe opening of the existing buried pipe (6'), and a newly buried pipe (6). a movable clamp part (F) that grips the pipe opening and is movable by a predetermined stroke in the longitudinal direction of the pipe with respect to the fixed clamp part (E), and means (90) for moving the movable clamp part (F); A pipe installation device comprising: a pipe fastening part (C) suspended from the other end of the beam (22). (2) The pin-hinged frame (A) described in claim 1 includes an upper frame (11) that is coupled to a boom (3) of a driving vehicle (1), and one end of which is connected to the upper frame (11).
11) and a lower frame (12) rotatably connected by a substantially horizontal pin (10), and a posture control jack (14) is attached to the other end side of the upper frame (11) and lower frame (12). ) are connected to each other, and a swing motor (20) is installed on a lower frame (12). (3) Pipe clamp part (
B) a pair of clamp pieces (40) that grip the tube (6);
, (40') are opened and closed by a hydraulic jack (44), and the upper part of the frame (42) to which the clamp pieces (40) and (40') are attached is connected to the movable table (D) and the pin (49).
The movable stage (D) is movably installed in a hollow part of a beam (22) having a substantially C-shape with a downward cross section. (4) Pipe fastening portion (C) described in claim 1
A fixed clamp part (E) is installed facing downward on one side of a frame frame (80) connected to a beam (22) with a pin (83), and a movable clamp part (F) is installed facing downward on the other side. , and a tube (6
) is installed in a frame (80) so as to be movable along a guide rod (78) parallel to the longitudinal direction of the pipe (6), and installed in the same frame (80) parallel to the longitudinal direction of the pipe (6). The piston rod of the jack (90) for moving the movable clamp part is combined with the movable clamp part (F) in the pipe laying device. (5) The fixed clamp part (E) and the movable clamp part (F) described in claim 4 are tubes (6) and (6), respectively.
A pair of clamp pieces (60) (60') or (70) (70') that grip the hydraulic jack (63) or (70')
4) A pipe laying device configured to be opened and closed.