JPH04105130U - Hydraulic joint attachment/detachment device for band cylinder of casing driver - Google Patents

Abstract

(57) [Summary] [Objective] To provide an attachment/detachment device for a hydraulic joint for a band cylinder of a casing driver, which can save space with a simple mechanism and also allows reliable positioning. [Configuration] A slide guide 24 is attached to the thruster table 5, and the actuator 26 is moved along the slide guide 24.
Attach the slide bracket 25 that moves by. Attach the non-rotating side joint 28 to the slide bracket 25.
The rotating side joint 30 is attached to the joint holder 29 attached to the rotating body 1 so as to face the connection port of the non-rotating side joint 28 on the rotation locus.
Install. Slide bracket 25 and holder 29
A positioning guide is provided for each.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is based on the pressure of large-diameter steel pipe piles or steel pipes used in construction and civil engineering foundation work. A fully rotating casing driver for inserting and extracting the casing. Supply hydraulic oil to the hydraulic cylinder for opening and closing the band of the hydraulic band device fixed to the rotating body. , relates to an attachment/detachment device for a hydraulic joint constituting a hydraulic circuit for discharging.

0002

[Conventional technology]

The casing driver slides onto the base frame, which is held horizontally by a jack. A thruster table mounted to be able to be raised and lowered by a last cylinder, and the thruster A rotating body that is rotatably attached to the table by a hydraulic motor, and a rotating body that is attached to the rotating body. A band for grasping the cut casing and a hydraulic band cylinder that opens and closes the band. and male and female attached to the rotating body side and the thruster table side, respectively. By removably connecting the joint, hydraulic oil can be supplied to the band cylinder. Configures the hydraulic circuit for supply and discharge. Then press fit the steel pipe with a casing driver. If so, connect the above joint and supply hydraulic oil to the band cylinder through the joint. then operate the band in the closing direction to chuck the casing with the band and chuck it. After chucking, remove the joint and place the thrust cylinder on the thruster table. At the same time, the rotating body is rotated by the hydraulic motor together with the casing. make it turn This allows the casing to be attached to the casing driver and casing driver. The pushing force is applied by the weight of the weight attached to the lever, and the thrust cylinder is pushed into the ground. It is press-fitted by one stroke of the cylinder. Next, connect the joint again, and Supply hydraulic oil to the band cylinder and operate the band in the direction to open the casing. Release the belt restraints from the thruster table, raise the thruster table, and proceed as before. The operation of chucking the casing, pushing it down, and rotating it with the casing is repeated. Go back.

0003 Conversely, when pulling out the casing, make sure the thruster table is at the lowest position. In this state, connect the joint and supply hydraulic oil to the band cylinder through the joint. The casing is chucked by the band by moving the band in the closing direction. , After chucking, remove the joint and operate the thrust cylinder to release the thruster. At the same time, the cylinder is lifted together with the casing and rotated by a hydraulic motor if necessary. Rotate the casing together with the rolling body, and move the thruster table to one stroke of the thrust cylinder. After raising the stroke, connect the joint and connect the band cylinder through the joint. Supply hydraulic oil to the casing and operate it in the direction of opening the band to prevent the casing band from opening. Release the restraint, lower the thruster table using the thrust cylinder, and proceed as described above. The operation of chucking the casing with the band and pushing it up is repeated. vinegar.

0004 This type of fully rotating casing driver rotates the casing to rotate the casing. Since press-fitting can be performed while centering the casing, press-fitting the casing can be done vertically. It is superior to the swing type in that it can be performed directly, but the band cylinder The band cylinder is attached to the rotating body, so the band cylinder opens and closes the band. In order to supply and discharge hydraulic oil to and from the band cylinder, Before each press-fitting or pulling-out operation of the casing for one stroke of the thrust cylinder, The fitting must be attached and detached. Traditionally, this joint was attached and detached manually. However, since oil pressure remains in the hydraulic circuit on the rotating body side, the pressure must be relieved before connecting the joint. If the connection is not made manually, it will not be possible to connect it manually, and it will take time to connect and disconnect the fitting. This was time consuming and caused a decrease in work efficiency.

[0005] In order to solve these problems, the applicant has already developed the device shown in Figure 4. , has been proposed (Japanese Patent Application Laid-Open No. 61-270418). This device is a band series on the rotating body 1 side. A joint 4 (this joint 4 are installed above and below the two pipes 2 and 2, but in the drawing, the lower joint is not the current one. ), whereas the thruster table 5 side joint 6 (this joint 6 is also arranged in two upper and lower positions) A hydraulic cylinder 7 is provided for attaching and detaching the thruster table 5. In order to retract the hand 6 to a position where it does not come into contact with the rotating body side equipment, it has the following structure. That is, the movable body 10 is movable along the guide 9 provided in the tangential direction of the rotary body 1. and attach the bracket 8 to the movable body 10 so as to be rotatable around the pin 11. Then, the joint 6 and the hydraulic cylinder 7 are mounted on the bracket 8. Also, the above The piston rod 13 of the hydraulic cylinder 12, one end of which is connected to the guide 9, is connected to the moving body. 10 and extend the hydraulic cylinder 12, the movable body 10 will move to the end of the guide 9. The bracket 8 moves as shown by the two-dot chain line A, and the bracket 8 is moved by the force of the tension spring 14. By taking an inclined posture with respect to the guide 9, the thruster table 5 side joint 6 will be evacuated. In addition, when the joint 4 is stopped at the position shown in the figure, the hydraulic When the cylinder 12 is contracted, the moving body 10 moves from the position indicated by the two-dot chain line to the position indicated by the solid line. As a result, the tip 15 of the bracket 8 is engaged with the recess 16 of the rotating body 1 side bracket. As the movable body 10 moves, the bracket 8 rotates around the pin 11. As shown by the solid line, the joint 6 faces the rotating body side joint 4 in the radial direction of the rotating body 1. Then, by extending the hydraulic cylinder 7, the joint 6 moves forward and is connected to the joint 4. The configuration is as follows.

[0006]

[Problem that the idea aims to solve]

However, in this conventional configuration, in order to ensure the alignment of the male and female joints 4 and 6, Then, the tip 15 of the bracket 8 is engaged with the recess 16 provided on the rotating side, and the bracket is A hydraulic cylinder 12 and a lateral movement guide device for rotating the cut 8 while moving it laterally. The equipment is large-scale, has a complicated structure, and requires a large installation space. The problem was that I had no choice but to listen.

[0007] In view of these problems, the present invention uses a simple mechanism to save space. Attaching the hydraulic joint for the band cylinder of the casing driver for reliable positioning. The purpose is to provide a removal device.

[0008]

[Means to solve the problem]

In order to solve the above-mentioned problems, the present invention provides a thruster table attached to the thruster table. A ride guide, a slide bracket that moves along the slide guide, and a slide bracket that moves along the slide guide. Actuator for moving the ride bracket and attached to the slide bracket a non-rotating side joint, a holder attached to the rotary body, and a The rotating side joint, which is installed to face the connection port of the non-rotating side joint, and the slot Guide surfaces for positioning are provided on the side bracket and the holder respectively. The invention is characterized by comprising a positioning guide for a joint.

[0009]

[Effect]

Since the present invention has the above-described configuration, the rotating body is stopped and the rotating side is With the rotating joints facing each other, operate the actuator to move the slide brush. When the bracket is moved in the direction where the fittings approach each other, the slide bracket and The centering of the fitting is aligned by the action of the guide surface of the alignment guide provided on the holder and the holder. The joints are joined together.

0010

【Example】

An embodiment of the present invention will be described below with reference to the drawings. Figure 1 shows the coupling according to the present invention. 2 is a plan view, and FIG. 3 is an enlarged view of the main part of FIG. 1. Figure 1 and 2, reference numeral 5 indicates guide posts 20 provided at the four corners of the base frame 19. It is installed along the axis so that it can be raised and lowered by a hydraulic thrust cylinder (not shown). It is a ring-shaped thruster table, and the thruster table 5 has a ring-shaped rotating The body 1 is mounted to be rotated by a hydraulic motor (not shown). the rotation The body 1 has a casing formed by a band cylinder 22 and a band 23 made up of hydraulic cylinders. (not shown) has a hydraulic band device for gripping and releasing.

[0011] 24 is a pair of left and right slide guides provided on the thruster table 5; 25 is a corresponding slide guide; Between the left and right slide guides 24, 24, This is a slide bracket attached so that it can move freely along the The ride bracket 25 has a gap shown in g with respect to the slide guides 24, 24. It is installed to allow for left and right movement.

0012 26 is a stand installed between the slide bracket 25 and the thruster table 5. The slide bracket 25 is a hydraulic cylinder for moving the ride bracket 25. The connection part with the pin 27 is within the range restrained by the slide guide 24. They are connected so that they can rotate relative to each other.

[0013] 28 is a pair of male joints attached to the slide bracket 25, each having a Connected to a hydraulic power source or oil tank via hydraulic hoses 33, 33 It is.

[0014] On the other hand, the hydraulic band cylinder 22 is attached to the holder 29 attached to the rotating body 1. The female joints 30, 30 connected to the a male joint 28 attached to the slide bracket 25 on a trajectory caused by the rotation of the body 1; 28 so that the connection ports are facing each other.

[0015] The slide bracket 25 also has a tapered guide on the tip side. A pair of left and right guide rods 31 each having a surface are provided on the holder 29. A guide surface corresponding to the guide rod 31 (in this example, the guide surface has a tapered shape) A guide hole 32 is provided to form an alignment guide for the joints 28, 30. The guide rod 31 is guided by the tapered guide surface of the guide hole 32. When inserted, the cores of the male and female joints 28 and 30 match and are connected. ing. Therefore, before the tip of the male joint 28 reaches the lower end of the female joint 30, the guide The structure is such that the tip of the rod 31 reaches the guide hole 32.

[0016] In this configuration, the operator operates the hydraulic motor for driving the rotating body 1 and After rotating the rotating body 1 so that the hands 28 and 30 are substantially opposed to each other, the hydraulic cylinder 26 When the slide bracket 25 is extended, the slide bracket 25 is attached to the left and right slide guides 24, 24. The guide rods 31, 31 are first inserted into the guide holes 32, 32. The joints 28 and 30 are aligned, and the hydraulic cylinder 26 is further extended. The joints 28 and 30 are coupled together.

[0017] In the above embodiment, the positioning guide of the joint is formed by a pair of guide rods 31. Although these are configured with guide holes 32, they may be provided one at a time in the center, or Alternatively, a block having a positioning guide surface may be provided instead of the tapered hole. . In addition, the structure that allows the lateral movement of the joints 28 and 30 is located on the rotating body 1 side or may be provided on both the rotating body 1 side and the thruster table 5. In addition, in the example In this case, place the male joint 28 and guide rod 31 on the lower side, and insert the female joint 30 and guide hole 3 into the lower side. 2 is on the upper side, which is advantageous in terms of preventing the infiltration of earth and sand, but the present invention does not have this structure. It is not limited to construction. Further, as means for moving the slide bracket 25, It is also possible to use other actuators instead of the hydraulic cylinder 26.

[0018]

[Effect of the idea]

As mentioned above, in this invention, the bracket to which the non-rotating side joint is attached is The structure is such that it is connected by sliding it to the rotating joint side using an actuator, and the Alignment can now be performed using alignment guides between joints during contact operation. Therefore, the space can be reduced with a simple mechanism, and reliable positioning can be performed.

[Brief explanation of drawings]

FIG. 1 is a front view showing an embodiment of a coupling device according to the present invention.

FIG. 2 is a plan view showing an embodiment of a coupling device according to the present invention.

FIG. 3 is an enlarged view of the main part of the figure.

FIG. 4 is a plan view of a conventional coupling device.

[Explanation of symbols]

1 Rotating body 5 Thruster table 19 Base frame 20 Guide post 22 Band cylinder 24 Slide guide 25 Slide bracket 26 Hydraulic cylinder 28, 30 joint 29 Holder 31 Guide rod 32 Guide hole

Claims (1)

[Scope of utility model registration request] Claim 1: A thruster table is mounted along a guide post of a base frame so as to be movable up and down by a thrust cylinder, a ring-shaped rotating body rotated by a hydraulic motor is mounted on the thruster table, and a casing gripping band is attached to the rotating body. A band cylinder that opens and closes the band is installed, and male and female joints installed on the rotating body side and the thruster table side are removably connected, thereby providing hydraulic pressure for supplying and discharging hydraulic oil to the band cylinder. A device for attaching and detaching a hydraulic joint for a band cylinder of a casing driver that constitutes a circuit includes a slide guide attached to the thruster table, a slide bracket that moves along the slide guide, an actuator for moving the slide bracket, and the slide bracket. a non-rotating side joint attached to the rotating body, a holder attached to the rotating body, and a rotating side joint attached to the holder so as to face a connection port of the non-rotating side joint on a rotation locus;
An attachment/detachment device for a hydraulic joint for a band cylinder of a casing driver, comprising: a positioning guide for a joint provided on the slide bracket and the holder, respectively, and having a guide surface for positioning.