Joint pipe with length adjusting function

Abstract

The utility model discloses a joint pipe with a length adjusting function, which belongs to the technical field of concrete diaphragm wall construction and comprises a joint pipe and butt joint structures arranged at the upper end and the lower end of the joint pipe, and each butt joint structure comprises a plurality of connecting holes and bolt holes which are arranged at the upper end of the joint pipe and are coaxial with the joint pipe. The first threaded hole is formed in the side face of the connector pipe and penetrates through the connecting hole, the connecting block and the plug pin are arranged at the lower end of the connector pipe, the connecting block is in butt joint with the connecting hole, a through hole coaxial with the first threaded hole is formed in the connecting block, and the plug pin is telescopically arranged in the connector pipe through an adjusting mechanism. And the end part of the plug pin and the plug pin hole are of a matched conical structure. The butt joint structures are arranged at the two ends of the joint pipe, the multiple joint pipes can be selected to be spliced according to the depth of a foundation pit, the length of the joint pipes can be adjusted, and therefore the construction requirements of the joint pipes of different diaphragm walls are met, transportation and management are convenient, and construction efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete anti-seepage wall construction, in particular to a joint pipe with a length adjustment function. Background Art

[0002] During the construction of concrete anti-seepage walls, in order to maintain the connectivity and integrity between wall sections, the joints often use the joint pipe process, that is, before pouring the first-phase slot section concrete, a joint pipe with the same diameter and slot width is pre-inserted at the left and right ends of the first-phase slot section. After the concrete is initially set, the joint pipe is pulled out by a pipe pulling machine to form a semi-tenon joint at the end of the first-phase slot section. After the second-phase slot is completed, the second-phase slot concrete is poured to form the anti-seepage walls of each slot section as a whole. In actual projects, due to the inconsistent depth of the anti-seepage wall, it is necessary to replace the matching length of the joint pipe, and the length of the joint pipe is mostly fixed, which is not convenient for adjusting the length. Moreover, when the fixed length of the joint pipe is long, it will limit the placement and transportation of the joint pipe. Utility Model Content

[0003] In order to overcome the above-mentioned shortcomings of the existing joint pipe due to the fixed length, the technical problem to be solved by the utility model is to provide a joint pipe with a length adjustment function.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A joint pipe with a length adjustment function comprises a joint pipe and a docking structure arranged at the upper and lower ends of the joint pipe, the docking structure comprising a plurality of connecting holes and latch holes arranged at the upper end of the joint pipe and coaxial with the joint pipe, and a first threaded hole arranged at the side of the joint pipe and penetrating the connecting hole, and also comprises a connecting block and a latch arranged at the lower end of the joint pipe, the connecting block is connected to the connecting hole, a through hole coaxial with the first threaded hole is provided on the connecting block, the latch is telescopically arranged in the joint pipe through an adjustment mechanism, and the end of the latch and the latch hole are matching conical structures.

[0006] Furthermore, the adjustment mechanism includes a sliding block and a threaded rod and a guide rod parallel to each other arranged on the sliding block. A second threaded hole and a guide hole perpendicular to the axis of the joint pipe are provided in the joint pipe, and the second threaded hole passes through the side surface of the joint pipe. The outer end of the threaded rod is threadedly connected to the second threaded hole, and a connecting groove is provided at the end. The inner end of the threaded rod is rotatably connected to the sliding block, and the guide rod is slidably connected to the guide hole. The inner end of the pin and the lower end of the sliding block are both provided with matching inclined surfaces. A spring is sleeved on the pin, and under the action of the spring, the inner end of the pin is abutted against the sliding block through the inclined surface. When the sliding block slides along the guide hole, the pin can be extended and retracted through the inclined surface and the spring.

[0007] Furthermore, the upper end of the joint pipe is provided with two connection holes and two latch holes, which are symmetrically arranged along the axis of the joint pipe, and the connection block and the latch at the lower end of the joint pipe match the connection holes and the latch holes respectively.

[0008] Furthermore, a countersunk groove is provided on the side wall of the joint pipe at a position corresponding to the first threaded hole and the second threaded hole.

[0009] Furthermore, a protective layer is provided on the outer wall of the joint pipe, and the protective layer is composed of a corrosion-resistant coating, a display coating and a protective coating from the inside to the outside.

[0010] The beneficial effect of the utility model is that by arranging docking structures at both ends of the joint pipe, multiple sections of joint pipes can be selected for splicing according to the depth of the foundation pit, and the length of the joint pipe can be adjusted, thereby meeting the construction requirements of the joint pipes of different anti-seepage walls, and it is also convenient for transportation and management. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0012] Figure 2 It is a structural schematic diagram of two joint pipes of the utility model when they are butt-jointed;

[0013] Figure 3 This is a schematic diagram of the structure of the joint pipe of the utility model after the joint is completed;

[0014] Figure 4 It is a cross-sectional view of the joint pipe of the utility model.

[0015] Marked in the figure are, 1-connecting pipe, 2-pin, 3-sliding block, 4-threaded rod, 5-guide rod, 6-spring, 7-protective layer, 8-bolt, 9-adjusting rod, 10-sealing block, 11-connecting hole, 12-pin hole, 13-first threaded hole, 14-connecting block, 15-through hole, 16-second threaded hole, 17-guide hole, 18-countersunk groove, 41-connecting groove, 71-corrosion-resistant coating, 72-display coating, 73-protective coating. DETAILED DESCRIPTION

[0016] The utility model is further described below in conjunction with the accompanying drawings.

[0017] It should be noted that if there are directional indication terms in the present invention, such as up, down, left, right, front, and back directions and orientation terms, they are for the purpose of facilitating the description of the relative position relationship between components, and are not for the absolute position of the related components or the position relationship between components. They are only used to explain the relative position relationship and movement of the components in a certain posture. If the specific posture changes, the directional indication will also change accordingly. If there are terms related to quantity in the present invention, such as "multiple", "multiple", "several", etc., they specifically refer to two or more.

[0018] like Figure 1 As shown, the joint pipe with length adjustment function of the utility model comprises a joint pipe 1 and a docking structure arranged at the upper and lower ends of the joint pipe 1, wherein the docking structure comprises a plurality of connecting holes 11 and a latch hole 12 arranged at the upper end of the joint pipe 1 and coaxial with the joint pipe 1, and a first threaded hole 13 arranged at the side of the joint pipe 1 and penetrating the connecting hole 11, and further comprises a connecting block 14 and a latch 2 arranged at the lower end of the joint pipe 1, wherein the connecting block 14 is connected to the connecting hole 11, and a through hole 15 coaxial with the first threaded hole 13 is provided on the connecting block 14, and the latch 2 is telescopically arranged in the joint pipe 1 through an adjusting mechanism, and the end of the latch 2 is a matching conical structure with the latch hole 12.

[0019] The use process of the utility model is: first, insert the connecting block 14 at the lower end of one joint pipe 1 into the connecting hole 11 at the upper end of the other joint pipe 1, then insert the bolt 8 along the first threaded hole 13 and the through hole 15, fix the connecting block 14 in the connecting hole 11, at this time, the latch 2 is completely located in the end surface of the joint pipe 1 or partially exposed to the outside and inserted into the latch hole 12, and finally the latch 2 is extended outward through the adjustment mechanism and further extended into the latch hole 12. Since the end of the latch 2 and the latch hole 12 are matching conical structures, the latch 2 will move the two joint pipes 1 in the axial and radial directions under the action of the conical surface during the insertion of the latch hole 12, thereby locking the two joint pipes 1 and improving the stability of the joint pipes 1 after docking.

[0020] For the adjustment mechanism, the preferred solution of the utility model is as follows: Figure 2As shown, the adjustment mechanism includes a sliding block 3 and a threaded rod 4 and a guide rod 5 which are parallel to each other and are arranged on the sliding block 3. The joint pipe 1 is provided with a second threaded hole 16 and a guide hole 17 which are perpendicular to the axis of the joint pipe 1, and the second threaded hole 16 passes through the side of the joint pipe 1. The outer end of the threaded rod 4 is threadedly connected with the second threaded hole 16, and a connecting groove 41 is provided at the end. The inner end of the threaded rod 4 is rotatably connected with the sliding block 3, and the guide rod 5 is slidably connected with the guide hole 17. The inner end of the latch 2 and the lower end of the sliding block 3 are both provided with matching inclined surfaces. A spring 6 is sleeved on the latch 2, and under the action of the spring 6, the inner end of the latch 2 and the sliding block 3 are abutted through the inclined surface. When the sliding block 3 slides along the guide hole 17, the latch 2 can be extended and retracted through the inclined surface and the spring 6. When setting the adjustment mechanism, a cavity for installation is first reserved at the end of the joint pipe 1, and after all components are installed, a shell structure is welded to the cavity part to protect the adjustment mechanism.

[0021] The specific adjustment process is: after the connection block 14 is connected with the connection hole 11, a specially designed adjustment rod 9 or a screwdriver is inserted into the second threaded hole 16 and connected with the connection groove 41 at the end of the threaded rod 4, and then the threaded rod 4 is rotated. Under the action of the guide rod 5, the sliding block 3 will slide along the guide hole 17. During the sliding process, the sliding block 3 will drive the latch 2 to move downward under the action of the inclined surface, so that the latch 2 overcomes the pressure of the spring 6 and is inserted into the latch hole 12. When the joint pipe 1 is to be disassembled, the threaded rod 4 is rotated in the opposite direction, so that the latch 2 is retracted into the joint pipe 1 under the action of the spring 6.

[0022] In order to make the connection of the joint pipe 1 stable and reliable, several docking structures should be provided for connection. However, considering that the joint pipe 1 may be squeezed and deformed during use, too many docking structures may make it impossible to dock due to large errors. Therefore, the preferred solution is to provide two connecting holes 11 and two latch holes 12 at the upper end of the joint pipe 1, and they are symmetrically arranged along the axis of the joint pipe 1, and the connecting block 14 and the latch 2 at the lower end of the joint pipe 1 match the connecting hole 11 and the latch hole 12 respectively.

[0023] Since the joint pipe 1 is filled with concrete after being placed in the groove section, in order to prevent the concrete from entering the first threaded hole 13 and the second threaded hole 16 and causing the joint pipe 1 to be unable to be disassembled later, a countersunk groove 18 is provided on the side wall of the joint pipe 1 at a position corresponding to the first threaded hole 13 and the second threaded hole 16. The countersunk groove 18 corresponding to the first threaded hole 13 matches the bolt head of the bolt 8. When the docking is completed, the sealing block 10 can be filled into the countersunk groove 18 corresponding to the second threaded hole 16, as shown in FIG. Figure 3 As shown, concrete can be prevented from entering the second threaded hole 16. When disassembling the joint pipe 1, only the sealing block 10 needs to be removed first.

[0024] In order to extend the service life of the joint pipe 1, a protective layer 7 is provided on the outer wall of the joint pipe 1. Figure 4 As shown, the protective layer 7 is composed of a corrosion-resistant coating 71, a display coating 72 and a protective coating 73 from the inside to the outside. The protective coating 73 can be made of tungsten carbide metal. The display coating 72 is a coating with a certain color. When the protective coating 73 fails, the display coating 72 will be exposed to remind people to re-perform the protective treatment. The corrosion-resistant coating 71 can be made of Teflon material to improve the corrosion resistance of the joint pipe 1.

[0025] The utility model provides a docking structure at both ends of the joint pipe 1, and multiple sections of the joint pipe 1 can be selected for splicing according to the depth of the foundation pit, so as to adjust the length of the joint pipe 1, thereby meeting the construction requirements of the joint pipes of different anti-seepage walls, and also facilitating transportation and management, and improving construction efficiency. In addition, by providing a protective layer 7 on the joint pipe 1, the wear resistance and corrosion resistance of the joint pipe 1 can be improved, thereby extending the service life of the joint pipe 1, and having good practicality and application value.

Claims

1. A joint pipe with a length adjustment function, characterized in that: The invention comprises a joint pipe (1) and a butt joint structure arranged at the upper and lower ends of the joint pipe (1), wherein the butt joint structure comprises a plurality of connecting holes (11) and a latch hole (12) arranged at the upper end of the joint pipe (1) and coaxial with the joint pipe (1), and a first threaded hole (13) arranged at the side of the joint pipe (1) and penetrating the connecting hole (11), and further comprises a connecting block (14) and a latch (2) arranged at the lower end of the joint pipe (1), wherein the connecting block (14) is connected to the connecting hole (11), and a through hole (15) coaxial with the first threaded hole (13) is provided on the connecting block (14), and the latch (2) is telescopically arranged in the joint pipe (1) through an adjusting mechanism, and the end of the latch (2) and the latch hole (12) are of a matching conical structure.

2. The joint pipe with length adjustment function according to claim 1, characterized in that: The adjusting mechanism comprises a sliding block (3), and a threaded rod (4) and a guide rod (5) which are parallel to each other and are arranged on the sliding block (3). A second threaded hole (16) and a guide hole (17) which are perpendicular to the axis of the connecting pipe (1) are arranged in the connecting pipe (1), and the second threaded hole (16) passes through the side surface of the connecting pipe (1). The outer end of the threaded rod (4) is threadedly connected to the second threaded hole (16), and a connecting groove (41) is arranged at the end. The inner end of the threaded rod (4) is rotatably connected to the sliding block (3), and the guide rod (5) is slidably connected to the guide hole (17). The inner end of the latch (2) and the lower end of the sliding block (3) are both provided with matching inclined surfaces. A spring (6) is sleeved on the latch (2), and under the action of the spring (6), the inner end of the latch (2) and the sliding block (3) are abutted against each other through the inclined surface. When the sliding block (3) slides along the guide hole (17), the latch (2) can be extended and retracted through the inclined surface and the spring (6).

3. The joint pipe with length adjustment function according to claim 2, characterized in that: The upper end of the joint pipe (1) is provided with two connection holes (11) and two latch holes (12), which are symmetrically arranged along the axis of the joint pipe (1); the connection block (14) and the latch (2) at the lower end of the joint pipe (1) are matched with the connection holes (11) and the latch holes (12) respectively.

4. The joint pipe with length adjustment function according to claim 2, characterized in that: On the side wall of the joint pipe (1), countersunk grooves (18) are provided at positions corresponding to the first threaded hole (13) and the second threaded hole (16).

5. The joint pipe with length adjustment function according to any one of claims 1 to 4, characterized in that: A protective layer (7) is provided on the outer wall of the joint pipe (1), and the protective layer (7) comprises, from the inside to the outside, a corrosion-resistant coating (71), a display coating (72) and a protective coating (73).

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