A cement pipe connection structure

Abstract

The utility model provides a cement pipe connection structure, including a cement pipe main body and connecting pins installed on the cement pipe main body in an annular array, one end of the cement pipe main body is provided with a connecting groove, and the other end of the cement pipe main body is fixed with a connecting part inserted in the connecting groove, wherein both sides of the outer wall of the cement pipe main body are provided with protrusions, and both sides of the inner wall of the connecting groove and the outer wall of the connecting part are embedded with rubber sealing plates with an arc structure, through holes are provided in an annular array on the protrusions, and one end of the connecting pin passing through the through hole is elastically provided with a positioning block, and both sides of the outer wall of the connecting part and the inner wall of the connecting groove are provided with clamping grooves, and the rubber sealing plate is embedded in the clamping groove, and the side surfaces facing each other of the two protrusions are provided with grooves, and the grooves are embedded in the through holes, which greatly reduces the gap after the cement pipe main body is installed and improves the sealing and installation convenience of the cement pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of cement pipe connection, in particular to a cement pipe connection structure. Background Art

[0002] Cement pipes are a type of large and medium-sized pipes produced and processed with construction steel bars and concrete as raw materials. They are key application pipes for urban construction drainage pipes and underground electrical equipment pipes. Cement pipes have the characteristics of low cost, good seismic performance, simple installation process, and high structural strength. Most of the existing cement pipe connection structures are set at both ends of the cement pipe. One end of the cement pipe is provided with a receiving part, and the other end is provided with a plug-in part. During installation, the plug-in part of the cement pipe is installed into the receiving part of another adjacent cement pipe, thereby realizing the connection between the cement pipes. During the installation process, the plug-in part of the cement pipe is installed into the receiving part of the adjacent cement pipe, and there is a problem of loose installation, so that water seepage may occur at the connection of the cement pipes.

[0003] The patent with application number 202222551331.7 discloses a cement pipe connection structure, which relates to the field of cement pipes, and includes a cement pipe, a connection assembly and a fastening assembly. The connection assembly includes a mounting ring arranged at one end of the cement pipe and a mounting groove arranged at the other end of the cement pipe, a limiting strip is arranged on the outer wall of the mounting ring, a first fixing groove is arranged on the inner wall of the mounting groove, and a sealing gasket is arranged in the first fixing groove; when multiple cement pipes are connected, the mounting ring is embedded and installed in the mounting groove, and the limiting strip is embedded and installed in the first fixing groove accordingly. When two adjacent sections of cement pipe are connected, the mounting ring of one section of cement pipe is embedded and installed in the mounting groove of an adjacent section of cement pipe; correspondingly, the limiting strip of one section of cement pipe is embedded and installed in the first fixing groove of an adjacent section of cement pipe; a sealing gasket is arranged in the first fixing groove to make the installation of the limiting strip in the first fixing groove tighter.

[0004] The above technical solution is provided with multiple first fixing grooves and limit strips inserted into the first fixing grooves at both ends of the cement pipe. The multiple first fixing grooves undoubtedly increase the gap between the two cement pipes when connected. At the same time, due to errors and unevenness in the cement pipe during the pouring process, it is difficult for the limit strip to fully match the first fixing groove, affecting the normal installation of the cement pipe. In addition, since the cement pipe is fixed by a screw, the threaded pipe connected to the screw needs to be fixed in the cement pipe during the pouring process. The installation efficiency of the screw is slow, and the inclination of the threaded pipe will cause the screw to slip, which seriously affects the production and installation efficiency of the cement pipe. Utility Model Content

[0005] The purpose of the utility model is to provide a cement pipe connection structure to address the deficiencies in the prior art. The rubber sealing plate structure in the groove cooperates with the connecting pin structure to achieve the functions of convenient demoulding and high installation efficiency of the cement pipe casting, thereby solving the problem that the complex connection structure affects the installation efficiency of the cement pipe after casting.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cement pipe connection structure, comprising a cement pipe body and connecting pins installed on the cement pipe body in a ring array, a connecting groove is provided at one end of the cement pipe body, and a connecting part inserted into the connecting groove is fixed at the other end of the cement pipe body, wherein protrusions are provided on both sides of the outer wall of the cement pipe body, and rubber sealing plates with arc-shaped structures are embedded and installed on both sides of the inner wall of the connecting groove and the outer wall of the connecting part, through holes are provided on the protrusion in a ring array, and a positioning block is elastically provided on one end of the connecting pin passing through the through hole.

[0007] Preferably, both sides of the outer wall of the connecting portion and the inner wall of the connecting groove are provided with clamping grooves, and the rubber sealing plate is embedded in the clamping grooves.

[0008] Furthermore, grooves are provided on the side surfaces facing each other of the two protrusions, and the grooves are embedded in the through holes.

[0009] Furthermore, a positioning portion is fixed on the connecting pin, and the positioning portion is embedded in the groove.

[0010] Furthermore, a rubber pad is sleeved and installed on the connecting pin, and two ends of the rubber pad are respectively in contact with the inner wall of the groove and the positioning portion.

[0011] Furthermore, one end of the connecting pin passing through the through hole is symmetrically provided with a mounting groove, and the positioning block is slidably inserted in the mounting groove.

[0012] Furthermore, an anti-dropping portion is provided at one end of the positioning block extending into the mounting groove, and an arc groove is provided at the other end of the positioning block.

[0013] Furthermore, a spring is embedded in the installation groove, the anti-dropping portion abuts against the inner wall of the installation groove, and one end of the positioning block extending out of the installation groove is tightly connected to the inner wall of the groove.

[0014] The beneficial effects of the utility model are:

[0015] (1) The utility model symmetrically opens arc-shaped slots on the outer wall and the inner wall of the connecting part. The arc-shaped slots facilitate demoulding of the cement pipe body during the casting process, and a rubber sealing plate is inserted into the slot during installation. When the connecting part and the connecting slot are installed with each other, the two rubber sealing plates are tightly connected, thereby greatly reducing the gap after the cement pipe body is installed and improving the sealing performance of the cement pipe.

[0016] (2) The utility model provides a connecting pin in the raised portion on the cement pipe. After the connecting portion is inserted into the connecting groove, the connecting pin passes through the through hole. The positioning portion at one end of the connecting pin abuts against the inner wall of the groove. After the other end of the connecting pin passes through the through hole, the rubber pad is squeezed to elastically deform until the positioning block moves out of the through hole. The spring in the installation groove pushes the positioning block to protrude from the side wall of the groove. The positioning portions and positioning blocks protruding from both ends of the connecting pin keep the two cement pipe bodies fixed, thereby improving the convenience of installing the cement pipe bodies.

[0017] In summary, the utility model has the advantages of easy production and convenient installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the main body of the cement pipe of the utility model;

[0020] Figure 3 For this utility model Figure 2 A schematic diagram of the structure enlargement in the middle;

[0021] Figure 4 This is a schematic diagram of the disassembly structure of the connecting pin of the utility model.

[0022] In the figure: 1. cement pipe body; 2. raised part; 3. connecting pin; 4. slot; 5. connecting part; 6. through hole; 7. connecting groove; 8. groove; 9. rubber sealing plate; 10. rubber pad; 11. positioning part; 12. spring; 13. mounting groove; 14. anti-slip part; 15. arc groove; 16. positioning block. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0025] Embodiment 1

[0026] like Figure 1 and Figure 2 As shown, the present embodiment provides a cement pipe connection structure, comprising a cement pipe body 1 and connecting pins 3 installed in a ring array on the cement pipe body 1, a connecting groove 7 is provided at one end of the cement pipe body 1, and a connecting portion 5 inserted into the connecting groove 7 is fixed at the other end of the cement pipe body 1, wherein protrusions 2 are provided on both sides of the outer wall of the cement pipe body 1, and rubber sealing plates 9 with an arc-shaped structure are embedded and installed on both sides of the inner wall of the connecting groove 7 and the outer wall of the connecting portion 5, through holes 6 are provided in a ring array on the protruding portion 2, and a positioning block 16 is elastically provided on one end of the connecting pin 3 passing through the through hole 6.

[0027] The outer wall of the connecting part 5 and the inner wall of the connecting groove 7 are both provided with card grooves 4, and the rubber sealing plates 9 are embedded in the card grooves 4. The two sides of the two protrusions 2 facing each other are provided with grooves 8, and the grooves 8 are embedded in the through holes 6. The card grooves 4 with arc-shaped structures make it easy to demould the cement pipe body 1 during the pouring process, and the rubber sealing plates 9 are inserted into the card grooves 4 during installation. When the connecting part 5 and the connecting groove 7 are installed with each other, the two rubber sealing plates 9 are tightly connected, thereby greatly reducing the gap between the cement pipe body 1 after installation and improving the sealing of the cement pipe.

[0028] Embodiment 2

[0029] like Figure 3 and Figure 4As shown, the components identical or corresponding to those in the first embodiment are marked with the corresponding reference numerals of the first embodiment. For the sake of simplicity, only the differences from the first embodiment are described below. The difference between the second embodiment and the first embodiment is that: a positioning portion 11 is fixed on the connecting pin 3, and the positioning portion 11 is embedded in the groove 8. A rubber pad 10 is sleeved and installed on the connecting pin 3, and the two ends of the rubber pad 10 are respectively in contact with the inner wall of the groove 8 and the positioning portion 11. The end of the connecting pin 3 passing through the through hole 6 is symmetrically provided with a mounting groove 13, and a positioning block 16 is slidably inserted in the mounting groove 13. The end of the positioning block 16 extending into the mounting groove 13 is provided with an anti-dropping portion 14, and the other end of the positioning block 16 is provided with an arc groove 15. When the connecting pin 3 is inserted into the through hole 6, the positioning block 16 is The arc groove 15 abuts against the inner wall of the through hole 6, thereby squeezing the positioning block 16 to shrink into the installation groove 13. A spring 12 is embedded in the installation groove 13, and the anti-slip portion 14 abuts against the inner wall of the installation groove 13. One end of the positioning block 16 extending out of the installation groove 13 is tightly connected with the inner wall of the groove 8, and the positioning portion 11 at one end of the connecting pin 3 abuts against the inner wall of the groove 8. After the other end of the connecting pin 3 passes through the through hole 6, the rubber pad 10 is squeezed to undergo elastic deformation until the positioning block 16 moves out of the through hole 6. The spring 12 in the installation groove 13 pushes the positioning block 16 to protrude from the side wall of the groove 8.

[0030] Working steps

[0031] Step 1. When installing the cement pipe main body 1, after inserting the rubber sealing plate 9 into the slot 4, multiple cement pipe main bodies 1 are connected to each other, and the connecting part 5 is inserted into the connecting groove 7. During installation, the rubber sealing plate 9 is inserted into the slot 4. When the connecting part 5 and the connecting groove 7 are installed with each other, the two rubber sealing plates 9 are tightly connected. After the connecting part 5 is inserted into the connecting groove 7, the connecting pin 3 passes through the through hole 6, and the positioning part 11 at one end of the connecting pin 3 abuts against the inner wall of the groove 8. After the other end of the connecting pin 3 passes through the through hole 6, the rubber pad 10 is squeezed to elastically deform until the positioning block 16 moves out of the through hole 6. The spring 12 in the installation groove 13 pushes the positioning block 16 to protrude from the side wall of the groove 8. The positioning parts 11 and the positioning blocks 16 protruding from both ends of the connecting pin 3 keep the two cement pipe main bodies 1 fixed, thereby improving the convenience of installation of the cement pipe main body 1. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cement pipe connection structure, comprising a cement pipe body and connecting pins installed on the cement pipe body in an annular array, characterized in that: A connecting groove is provided at one end of the cement pipe body, and a connecting part inserted into the connecting groove is fixed at the other end of the cement pipe body, wherein protrusions are provided on both sides of the outer wall of the cement pipe body, and rubber sealing plates with arc-shaped structures are embedded and installed on both sides of the inner wall of the connecting groove and the outer wall of the connecting part, through holes are provided in a ring array on the protruding part, and a positioning block is elastically provided on one end of the connecting pin passing through the through hole.

2. A cement pipe connection structure according to claim 1, characterized in that: The outer wall of the connecting portion and both sides of the inner wall of the connecting groove are provided with clamping grooves, and the rubber sealing plate is embedded in the clamping grooves.

3. A cement pipe connection structure according to claim 1, characterized in that: Grooves are provided on the side surfaces facing each other of the two protrusions, and the grooves are embedded in the through holes.

4. A cement pipe connection structure according to claim 3, characterized in that: A positioning portion is fixed on the connecting pin, and the positioning portion is embedded in the groove.

5. A cement pipe connection structure according to claim 4, characterized in that: A rubber pad is sleeved and installed on the connecting pin, and two ends of the rubber pad are respectively in contact with the inner wall of the groove and the positioning portion.

6. A cement pipe connection structure according to claim 5, characterized in that: One end of the connecting pin passing through the through hole is symmetrically provided with a mounting groove, and the positioning block is slidably inserted in the mounting groove.

7. A cement pipe connection structure according to claim 6, characterized in that: An anti-dropping portion is arranged at one end of the positioning block extending into the installation groove, and an arc groove is arranged at the other end of the positioning block.

8. A cement pipe connection structure according to claim 7, characterized in that: A spring is embedded in the installation groove, the anti-dropping portion abuts against the inner wall of the installation groove, and one end of the positioning block extending out of the installation groove is tightly connected to the inner wall of the groove.

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