JPH0565977A - Pipe joining device - Google Patents

Abstract

(57) [Summary] [Structure] Both ends of the tubes 1 and 2 along the axial direction of the tube are attached to the rope 6
A pipe joining device 5 supported by a first clamp device 8 fixed to one end side of a main body frame 7 for holding one pipe 1, and a first clamp device 8 movable toward the first clamp device 8. Second clamp device 9 supported by the main body frame and gripping the other pipe 2, a cylinder device 11 for driving the second clamp device 9 toward and away from the first clamp device 8, and a cord 6 and a main body frame 7, and a suspension point vertical movement device 12 for variably adjusting the posture of the main body frame with respect to the horizontal level. [Effect] The pipes 1 and 2 are connected to the first and second clamp devices 8,
When the main body frame 7 is tilted in the state of being gripped by 9, the posture of the main body frame 7 is horizontally adjusted by the lifting point vertical movement device 12, and the pipes are centered and then joined. it can.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe joining apparatus for joining pipes laid in an open cut groove.

[0002]

2. Description of the Related Art Conventionally, there is a method of sequentially joining pipes by a pipe joining device when the pipes are laid by a cutting method. This is the insertion of a new pipe that is to be laid by gluing the pipe body on the receiving side of the existing pipe already installed or buried in the burying groove with one clamp device of the pipe joining device and joining it to the existing pipe. By grasping the mouth side tube body with the other clamp device of the pipe joining device and bringing the other clamp device close to the one clamp device, insert the new pipe into the receptacle of the existing pipe and insert the pipe. It is to join.

[0003]

However, according to the above-mentioned conventional structure, when the pipe joining device is used by being suspended from the tip of the drive arm such as a power shovel, the pipe is not gripped by the clamp device. Even if the balance is maintained, when the tubes are gripped by both clamp devices, the center of gravity of the pipe joining device changes depending on which position of the pipe is clamped by the clamp devices, and the balance is lost and the entire device is lost. There was a problem that it was not possible to center the pipes that were to be joined at an angle.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a pipe joining device capable of keeping the device and the pipe to be joined horizontal while the pipe to be joined is held by the clamp device. ..

[0005]

In order to solve the above problems, the present invention relates to a pipe joining apparatus in which both ends of the pipe to be joined along the axial direction of the pipe are supported by suspending means. Body frame that is arranged along the tube axis center direction, a first clamp device that is fixedly provided on one end side of the body frame and holds one of the pipes to be joined, and a tube shaft that faces the first clamp device. A second clamp device that is supported by the body frame so as to be movable in the axial direction and holds the other pipe to be joined, and a cylinder device that drives the second clamp device toward and away from the first clamp device. The tilt adjusting means is provided so as to be interposed between the suspending means and the main body frame and variably adjusts the attitude of the main body frame with respect to the horizontal level.

[0006]

With the above structure, in the state in which the pipe joining device supported by the suspending means is arranged above the pipe to be joined, the first one of the pipes to be joined which is already joined is grasped by the first clamp device, The other joining target pipe to be newly joined is gripped by the second clamp device. Further, the pipe joining device and the pipe to be joined are slightly lifted via the suspending means. In this state, the weight of the pipe to be joined is loaded on the pipe joining device, so that the center of gravity of the system changes depending on the holding position of the pipe to be joined by the first and second clamp devices, and the posture of the main body frame is not horizontal. There are cases. At this time, the attitude of the main body frame with respect to the horizontal level is measured, and when the main body frame is tilted, the attitude of the main body frame is adjusted horizontally by the tilt adjusting means, and after the pipes to be joined are centered, The second clamp device is moved toward the first clamp device by driving the cylinder device, and the other pipe to be joined held by the second clamp device is joined to the one pipe to be joined held by the first clamp device. To do.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 to 4, the pipes 1, which are connected to each other,
2 is a slip-on type, and a receiving port 3 is formed at the end of one pipe 1 and an insertion port 4 is formed at the end of the other pipe 2. Normally, the side of one pipe 1 is The other pipe 2 which is already placed or buried in the excavation groove
Is in the state of being newly connected. The pipe joining device 5 is supported at the tip of a drive arm such as a power shovel via both ends of the pipes 1 and 2 along the pipe axial direction via cords 6 as suspending means.

The pipe joining device 5 has a main body frame 7 arranged along the pipe axial direction of both pipes 1 and 2, and the main body frame 7 is provided with a receiving side of one pipe 1. A first clamp device 8 for gripping the barrel and a second clamp device 9 for gripping the barrel of the other pipe 2 on the insertion side are provided. The first clamp device 8 is fixed to the main body frame 7, and the second clamp device 9 is provided so as to reciprocate in the tube axis direction along the linear guides 10 provided on both sides of the main body frame 7. There is. Further, the main body frame 7 and the second
A cylinder device 11 that drives the second clamp device 9 toward and away from the first clamp device 8 is provided between the clamp devices 9.

The cord 6 has one end supporting one side of the main body frame 7 provided with the second clamp device 9, and the other end of the rope body 6 via the hanging point moving device 12 which serves as an inclination adjusting means. Supporting the other side.

As shown in FIG. 3, the suspension point vertical movement device 12 variably adjusts the posture of the main body frame 7 with respect to the horizontal level.
It is pinched by 14 and fixed. An elevating plate 18 is movably supported on a pair of guide rods 15 and 16 that also serve as connecting bolts for fastening the upper and lower mounting plates 13 and 14 via a linear bush 17 so as to be vertically movable. Further, the lower mounting plate 14 has a lifting plate 1
An adjusting cylinder device 19 for vertically driving 8 is provided, and the lifting plate 18 is provided with a pair of hinges 20 for fixing the rope 6. Further, a tilt meter 21 is provided in the middle of the body frame 7, and the tilt meter 21 measures the tilt angle of the posture of the body frame 7 with respect to the horizontal level.

Then, as shown in FIG.
Control unit (CPU) 2 via the A / D converter 22
3, the control device 23 is provided with an actuator 25 and a position detector 26 via a positioning unit 24. The actuator 25 forms a drive unit of the adjusting cylinder device 19, and the position detector 26 includes the hinge 20.
Is to detect the movement amount of.

The operation of the above configuration will be described. In the excavation groove to be laid, the pipe joining device 5 supported via the rope body 6 is arranged above the pipes 1 and 2, and the last one pipe 1 already joined is gripped by the first clamp device 8. Then, the other pipe 2 to be newly joined is gripped by the second clamp device 9. Further, the pipe joining device 5 and the pipes 1 and 2 to be joined are slightly lifted via the cord 6.

In this state, the weight of the pipes 1 and 2 is loaded on the pipe joining device 5, so that the center of gravity of the system changes depending on the positions where the pipes 1 and 2 are held by the first and second clamp devices 8 and 9. The posture of the body frame 7 may not be horizontal.

Therefore, the tilt angle of the posture of the main body frame 7 with respect to the horizontal level is measured by the inclinometer 21, and the measured angle is sent to the control device 23 via the A / D converter 22 to check the tilt of the main body frame 7. Determine the presence or absence. And
When the body frame 7 is inclined, the suspension point vertical movement device 12 is operated to adjust the posture of the body frame 7.

That is, the control device 23 instructs the actuator 25 to drive through the positioning unit 24, and the adjusting cylinder device 19 is moved back and forth while the operation amount is measured by the position detector 26. As a result, the guide rod 1
The lifting plate 18 moves up and down relatively along 5, 16
The hinge 20 connected to the rope 6 moves up and down relative to the main body frame 7.

As a result, the other end of the body frame 7 moves up and down to adjust its posture horizontally. Furthermore, after centering the pipes 1 and 2, the cylinder device 11 is driven to move the second clamp device 9 toward the first clamp device 8, and the other clamped by the second clamp device 9 is moved. The pipe 2 is joined to the one pipe 1 held by the first clamp device 8.

FIG. 6 shows another embodiment of the present invention. Members having the same functions as those of the previous embodiment are designated by the same reference numerals and the description thereof will be omitted. In FIG. 6, a tilting frame 31 is provided above the main body frame 7.
One end of the tilting frame 31 is swingably supported by the body frame 7, and the other end is connected to the other end of the body frame 7 via a tilting cylinder device 32.
One end of the tilt cylinder device 32 is rotatably supported by the body frame 7, and the other end is rotatably supported by the tilt frame 32. The rope 6 is connected to the tilting frame 31.

According to this construction, when the pipe joining device 5 is tilted, the tilting cylinder device 32 is moved back and forth with an operation amount according to the tilt angle, and the other end side of the main body frame 7 is moved up and down. Thus, the posture of the body frame 7 is adjusted to the horizontal level. Further, other operational effects are similar to those of the previous embodiment.

[0019]

As described above, according to the present invention, when the main body frame is tilted while the pipes to be joined are gripped by the first and second clamp devices, the tilt adjusting means is used to move the main body frame. It is possible to join the pipes to be joined after adjusting the posture horizontally and centering the pipes to be joined.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a pipe joining apparatus showing an embodiment of the present invention.

FIG. 2 is a front view of a main part of the pipe joining device according to the embodiment.

FIG. 3 is an enlarged view of a lifting point vertical movement device in the same embodiment.

FIG. 4 is an overall front view of the pipe joining device in the same embodiment.

FIG. 5 is a block diagram showing a control system of the pipe joining apparatus in the embodiment.

FIG. 6 is an overall front view of a pipe joining device showing another embodiment of the present invention.

[Explanation of symbols]

 1, 2 Pipes 3 Receiving port 4 Inserting port 5 Pipe joining device 8 1st clamp device 9 2nd clamp device 12 Lifting point vertical movement device 21 Tilt meter

Claims (1)

[Claims] 1. A pipe joining device in which both ends of a pipe to be joined along a pipe axis direction are supported by suspending means,
A main body frame that is arranged along the tube axis direction of the pipes to be joined, a first clamp device that is fixedly provided on one end side of the main body frame and holds one pipe to be joined, and a first clamp device And a second clamp device that is provided to be supported by the main body frame so as to be movable in the axial direction of the pipe and grips the other pipe to be joined, and the second clamp device is driven toward and away from the first clamp device. A pipe joining apparatus comprising: a cylinder device; and an inclination adjusting means provided between the suspending means and the main body frame to variably adjust the attitude of the main body frame with respect to the horizontal level.