Clamping device for grouting pipe of high-pressure jet grouting pile

Abstract

The utility model relates to the technical field of construction equipment, in particular to a high-pressure jet grouting pile grouting pipe clamping device which comprises a connecting frame, two wide edges of the connecting frame extend towards the same side to form an extending frame, and a first two-way screw and a rack are arranged between the two wide edges in the extending frame side by side from inside to outside. The first two-way screw is spirally connected with a moving block on the inner side of each wide edge, each moving block is fixedly connected with an extending support, and the extending supports extend towards the outer side of the extending frame in the direction of the wide edges; a second two-way screw is arranged in the extension support, a gear is arranged at the end, close to the moving block, of the second two-way screw, and the gear is meshed with the rack; the second two-way screw rod is provided with a forward section and a reverse section, the forward section and the reverse section are respectively connected with a square block in a screwed mode, and each square block is fixedly connected with a fixing piece. The problems that a clamping piece lacks universality and limits smooth movement of the grouting pipe are solved, and smooth movement of the grouting pipe can be guaranteed while the grouting pipe is clamped.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of construction equipment, in particular to a high-pressure jet grouting pile grouting pipe clamping device. BACKGROUND

[0002] A high-pressure jet grouting pile machine is used for drilling a grouting pipe with a nozzle into a target position in a soil layer, and then forming a high-pressure jet flow of slurry or water and air through a high-pressure device to achieve the purpose of cutting, disturbing and destroying the soil. In the process of destroying the soil, the drill pipe is gradually lifted to forcibly mix the slurry and soil particles, so that a cylindrical consolidated body is formed in the destroyed soil after the slurry solidifies, thereby achieving the purpose of reinforcing the foundation or stopping water and preventing seepage.

[0003] The existing high-pressure jet grouting pile machine is limited by a limiting piece on a rotating frame to limit the high-pressure jet pipe, and then the high-pressure jet pipe is connected with a connecting pipe for grouting. Since a certain gap is left between the limiting piece and the high-pressure jet pipe, the high-pressure jet pipe has a risk of tilting when being connected, which affects the quality of the jet grouting pile. Some technologies drive the clamping pieces to move closer to each other on the guide frame by rotating the adjusting screw rod, so that the clamping pieces contact the high-pressure jet pipe to clamp the high-pressure jet pipe, thereby achieving positioning of the high-pressure jet pipe. However, the above-mentioned clamping pieces lack universality and cannot position high-pressure jet pipes of different diameters, and the above-mentioned clamping positioning method will cause a large frictional resistance between the high-pressure jet pipes, hindering the smooth movement of the high-pressure jet pipes, thereby increasing the load of the equipment and adversely affecting the construction efficiency and quality. CONTENT OF THE UTILITY MODEL

[0004] The application provides a high-pressure jet grouting pile grouting pipe clamping device, which solves the problems of lack of universality of the clamping pieces and limitation of the smooth movement of the grouting pipe.

[0005] The technical scheme of the application is as follows:

[0006] A high-pressure jet grouting pile grouting pipe clamping device comprises a connecting frame, two wide edges of the connecting frame extend to the same side to form an extension frame, a first bidirectional screw rod and a rack are arranged side by side from inside to outside between the two wide edges in the extension frame, a moving block is spirally connected to the inside of each wide edge of the first bidirectional screw rod, each moving block is fixedly connected with an extension support, and the extension support extends outward along the wide edge direction of the extension frame;

[0007] A second bidirectional screw rod is arranged in the extension support, a gear is arranged on the end of the second bidirectional screw rod close to the moving block, and the gear is in meshing connection with the rack; the second bidirectional screw rod has a forward section and a reverse section, a square block is spirally connected to each of the forward section and the reverse section, and each square block is fixedly connected with a fixed piece.

[0008] Further, the fixing member comprises a support, the support has a fixing surface, and the fixing surface vertically arranges two ball mounting holes, and balls are arranged in the ball mounting holes.

[0009] Further, the fixing surface faces the center of a frame composed of the extension support and the extension frame.

[0010] Further, the fixing surface is covered with a cover plate, and the cover plate has a limiting hole, and the diameter of the limiting hole is smaller than the diameter of the ball.

[0011] Further, the outer surface of one wide side of the first bidirectional screw rod is provided with a knob.

[0012] Further, a backing plate is arranged below the rack.

[0013] Due to the adoption of the above technical solutions, the application has the following beneficial effects:

[0014] 1. The first bidirectional screw rod is rotated to move the clamping member. When the first bidirectional screw rod is rotated, the two moving blocks move towards the middle, thereby driving the extension support to move towards the middle, and then the gear and the rack are engaged to rotate the gear, the gear drives the second bidirectional screw rod to rotate, thereby driving the square block to move, and clamping is realized. Therefore, the rotation of one component drives the linkage of four components, and the linkage is synchronous, so that the grouting pipe can be clamped in the middle. The middle clamping can ensure that the forces in all directions are uniform, and the grouting pipe can maintain a good posture under the vibration working condition, thereby improving the grouting quality.

[0015] 2. The ball contacts the grouting pipe when clamping, and the ball can rotate in all directions in the ball mounting hole, so it can adapt to the vibration working condition of the grouting pipe. Because vibration is disordered, the component in contact with the grouting pipe should have the freedom in all directions. BRIEF DESCRIPTION OF DRAWINGS

[0016] The drawings described herein are used to provide further understanding of the application, and form a part of the application. The schematic embodiments of the application and the description thereof are used to explain the application, and do not constitute an improper limitation on the application.

[0017] Figure 1 A high-pressure rotary jet grouting pile grouting pipe clamping device is provided.

[0018] In the drawings:

[0019] 1, connecting frame; 2, wide side; 3, extension frame; 4, first bidirectional screw; 5, rack; 6, moving block; 7, extension support; 8, second bidirectional screw; 8-1, forward section; 8-2, reverse section; 9, gear; 10, square block; 11, fixed part; 12, support; 13, knob; 14, ball mounting hole; 15, ball; 16, cover plate. DETAILED DESCRIPTION

[0020] Based on the background art, the application provides a high-pressure rotary jet pile grouting pipe clamping device, which comprises a connecting frame 1, two wide sides 2 of the connecting frame 1 extend to the same side to form an extension frame 3, a first bidirectional screw 4 and a rack 5 are arranged side by side from inside to outside between the two wide sides 2 in the extension frame 3, the first bidirectional screw 4 is spirally connected with a moving block 6 inside each wide side 2, each moving block 6 is fixedly connected with an extension support 7, and the extension support 7 extends outward from the extension frame 3 along the direction of the wide side 2; a second bidirectional screw 8 is arranged in the extension support 7, a gear 9 is arranged at one end of the second bidirectional screw 8 close to the moving block 6, and the gear 9 is engaged with the rack 5; the second bidirectional screw 8 has a forward section 8-1 and a reverse section 8-2, and the forward section 8-1 and the reverse section 8-2 are respectively spirally connected with a square block 10, and each square block 10 is fixedly connected with a fixed part 11.

[0021] In the application, the center of the connecting frame 1 is hollowed out, and after being hollowed out, it is used to be installed on a high-pressure rotary jet pile machine to fix the overall device. The wide side 2 of the connecting frame 1 extends outward to form a semi-enclosed extension frame 3. In the extension frame 3, the first bidirectional screw 4 and the rack 5 are arranged side by side from close to the connecting frame 1 to away from the connecting frame 1. The first bidirectional screw 4 has two opposite spirals, and when rotating, it can simultaneously drive the moving block 6 connected therewith from both ends to the middle. The moving block 6 continues to set the extension support 7 outward of the extension frame, and the extension support 7 can move with the moving block 6. The second bidirectional screw 8 is arranged in the extension support 7, and the second bidirectional screw 8 has the same structure as the first bidirectional screw 4, has a forward section 8-1 and a reverse section 8-2, and can drive the square block 10 from both ends to the middle. The end of the second bidirectional screw 8 is provided with a gear 9, and after the gear 9 is engaged with the rack 5, it can rotate due to the movement of the extension support 7, thereby driving the second bidirectional screw 8 to rotate and realizing clamping of the clamping part. Therefore, the rotation of one component drives the linkage of four components in the application, and the linkage is synchronous, so that the grouting pipe can be clamped in the middle. The middle clamping can ensure that the forces in all directions are evenly distributed, and in the vibration working condition, the grouting pipe can maintain a good posture, thereby improving the grouting quality.

[0022] The advantage of the above-mentioned multi-stage linkage driven by one component is that it can effectively reduce the reverse rotation. When one of the clamping members is driven by the force to reverse the second bidirectional screw 8, the other clamping member will have a tendency to resist the reverse rotation due to the reverse spiral arrangement, thereby further increasing the stability. It can better adapt to the vibration working condition.

[0023] As a preferred embodiment of the present application, the fixing member 11 comprises a support 12 having a fixing surface vertically arranged with two ball 15 mounting holes 14, and the ball 15 is arranged in the ball 15 mounting hole 14. The support 12 moves with the square block 10, and the fixing surface, i.e. the plane of the support 12 facing the inner side, is not shown in the drawings. The ball 15 is mounted in the ball 15 mounting hole 14 by using the prior art, and the ball 15 can rotate arbitrarily along the ball center in the ball 15 mounting hole 14, so that the grouting pipe can move smoothly while being clamped. Figure 1

[0024] In a specific embodiment of the above-mentioned embodiment, the fixing surface faces the center of the frame composed of the extension bracket 7 and the extension frame 3. The present application requires that the grouting pipe is arranged at the center of the frame, and when clamped, the clamping member moves towards the center to achieve better clamping and shockproof effect.

[0025] In a preferred embodiment of the above-mentioned specific embodiment, the fixing surface is covered with a cover plate 16 having a limiting hole with a diameter smaller than that of the ball 15. The cover plate 16 and the fixing surface can be connected by buckling, bolting or other means, and the limiting hole can prevent the ball 15 from falling off, thereby improving the ease of use.

[0026] As a preferred embodiment of the present application, the first bidirectional screw 4 is provided with a knob 13 on the outer surface of one of the wide edges 2, and the knob 13 can be driven by power or manually.

[0027] As a preferred embodiment of the present application, a backing plate is arranged below the rack 5. The backing plate can provide support for the rack 5 to prevent it from deforming too much and sinking. The parts not mentioned in the present application can be realized by using or referring to the existing technology.

[0028] The above-mentioned is only an embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the scope of the claims of the present application.​

Claims

1. A high-pressure jet grouting pile grouting pipe clamping device, comprising a connecting frame, two wide sides of the connecting frame extend to the same side to form an extension frame, characterized in that, a first bidirectional screw and a rack are arranged side by side from inside to outside between the two wide sides in the extension frame, the first bidirectional screw is screw-connected with a moving block inside each wide side, each moving block is fixedly connected with an extension support, the extension support extends outward from the extension frame along the wide side direction; a second bidirectional screw is arranged in the extension support, a gear is arranged at one end of the second bidirectional screw close to the moving block, the gear is engaged with the rack; the second bidirectional screw has a forward section and a reverse section, the forward section and the reverse section are screw-connected with a square block respectively, each square block is fixedly connected with a fixing member.

2. The high-pressure jet grouting pile grouting pipe clamping device according to claim 1, characterized in that, the fixing member comprises a support, the support has a fixed surface and two vertical ball mounting holes are arranged on the fixed surface, balls are arranged in the ball mounting holes.

3. The high-pressure jet grouting pile grouting pipe clamping device according to claim 2, characterized in that, the fixed surface faces the center of a frame composed of the extension support and the extension frame.

4. The high-pressure jet grouting pile grouting pipe clamping device according to claim 3, characterized in that, the fixed surface is covered with a cover plate, the cover plate has a limiting hole, the diameter of the limiting hole is smaller than the diameter of the ball.

5. The high-pressure jet grouting pile grouting pipe clamping device according to claim 1, characterized in that, a knob is arranged on the outer surface of one of the wide sides of the first bidirectional screw.

6. The high-pressure jet grouting pile grouting pipe clamping device according to claim 1, characterized in that, a pad is arranged below the rack.

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