Biconvex clamp for pipeline connection

Abstract

The utility model relates to a biconvex hoop for pipeline connection, which comprises a first half hoop and a second half hoop, the first half hoop and the second half hoop are fastened and connected through a plurality of bolt pairs, the first half hoop and the second half hoop are pre-fastened and connected through a plurality of pre-connection components, and each pre-connection component comprises a plug board, a socket block and a limit block. The inserting plate is fixedly connected to the first half hoop, a plurality of limiting clamping grooves are formed in the side end of the inserting plate, the socket-and-spigot block is fixedly connected to the second half hoop, an inserting hole matched with the inserting plate is formed in the socket-and-spigot block, and a limiting sliding block with limiting clamping teeth matched with the limiting clamping grooves is arranged on the socket-and-spigot block in a penetrating mode; the socket block is provided with a tension spring which acts on the limiting sliding block to enable the limiting sliding block to tend to slide into the insertion hole so as to enable the limiting convex teeth to penetrate into the insertion hole. According to the biconvex clamping hoop for pipeline connection, the first half hoop and the second half hoop are connected to the pipeline in a pre-fastening mode through the pre-connecting assembly, and operation during pipeline connection and sealing performance after connection are facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of clamp connector, especially a double convex clamp for pipeline connection. BACKGROUND

[0002] The clamp is a commonly used fastener for pipeline connection, wherein the double convex clamp refers to two recesses formed on the inner walls of the two ends of the clamp, and the recesses are matched with the flanges formed on the outer walls of the pipelines to enhance the stability of the pipelines and the clamp after the clamp connects the pipelines, thereby improving the stability and sealing performance of the pipeline connection.

[0003] In view of the above problems, the utility model makes improvement. UTILITY MODEL CONTENTS

[0004] The utility model provides a double convex clamp for pipeline connection, which solves the above problems in the prior art.

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

[0006] A double convex clamp for pipeline connection, comprising a first half clamp and a second half clamp, wherein the first half clamp and the second half clamp are fastened and connected through a plurality of bolt pairs, the first half clamp and the second half clamp are prefastened and connected through a plurality of pre-connection assemblies, the pre-connection assembly comprises an insertion plate, a socket block and a limiting block, the insertion plate is fixedly connected to the side end of the first half clamp, and a plurality of limiting clamping grooves are arranged on the side end of the insertion plate, the socket block is fixedly connected to the side end of the second half clamp, and an insertion hole matched with the insertion plate is formed in the socket block, a limiting sliding block with limiting clamping teeth matched with the limiting clamping grooves is arranged on the socket block, and a tension spring is arranged on the socket block and acts on the limiting sliding block to make the limiting sliding block have a sliding trend into the insertion hole and make the limiting convex teeth penetrate into the insertion hole.

[0007] Preferably, the limiting clamping grooves are symmetrically arranged in two rows on the two side ends of the insertion plate, the limiting sliding blocks are symmetrically arranged on the socket block, and the two ends of the tension spring are fixedly connected to the two limiting sliding blocks.

[0008] Preferably, the socket block is formed with a pull spring cavity penetrating through two ends, the pull spring is arranged in the pull spring cavity and the two ends of the pull spring are fixedly connected with two limiting sliding blocks through two end ports of the pull spring cavity.

[0009] Preferably, the outer wall of the pull spring cavity is rotatably connected with a release jacking rod between the two limiting sliding blocks, when the release jacking rod rotates, the limiting sliding blocks are driven to slide by the end portion of the release jacking rod abutting against the limiting sliding blocks, so that the limiting clamping teeth are withdrawn from the insertion hole.

[0010] Preferably, the limiting sliding block is provided with a limiting groove matched with the contact jacking rod, when the end portion of the release jacking rod is clamped into the limiting groove, the limiting clamping teeth are withdrawn from the insertion hole.

[0011] Preferably, the first half hoop and the second half hoop are clamped with a buffer pad made of elastic material between the side ends, and the bolt pair passes through the buffer pad.

[0012] Preferably, the first half hoop and the second half hoop are respectively formed with a first mounting groove and a second mounting groove matched with the buffer pad on the inner side of the side end, and the two ends of the buffer pad are respectively arranged in the first mounting groove and the second mounting groove.

[0013] In summary, the beneficial effects of the utility model lie in that: the pre-connection assembly is used to realize the pre-tightening connection of the first half hoop and the second half hoop before the bolt pair is arranged and tightened, so that the first half hoop and the second half hoop remain relatively stable during the tightening process of the bolt pair, thereby ensuring the accuracy when the first half hoop and the second half hoop are tightly attached to the pipeline under the action of the bolt pair, and the stability and sealing performance of the two pipelines connected by the double-convex clamping hoop are ensured, and during the installation operation of the double-convex clamping hoop, the first half hoop and the second half hoop are pre-tightening connected by the pre-connection assembly, and then the first half hoop and the second half hoop are tightly connected by the bolt pair, so that the installation operation can be conveniently completed by one worker, the installation operation of the double-convex clamping hoop is facilitated, and after the bolt pair is tightened to realize the tight connection of the first half hoop and the second half hoop, the pre-connection assembly also applies a tightening force to the connection of the first half hoop and the second half hoop, thereby enhancing the stability of the first half hoop and the second half hoop after the tight connection, and further enhancing the stability of the two pipelines connected by the double-convex clamping hoop. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0015] Figure 1 It is a structural schematic diagram of the utility model.

[0016] Figure 2 is a decomposition schematic view of the utility model;

[0017] Figure 3 is Figure 2 is an enlarged schematic view of A in the middle;

[0018] Figure 4 is a cross-sectional schematic view of the utility model;

[0019] Figure 5 is a structural schematic view of the pre-connection assembly in the utility model.

[0020] In the figure: 1, first half hoop;11, plug-in board;111, limit card slot;12, first installation slot;2, second half hoop;21, socket block;22, plug-in hole;23, limit sliding block;231, limit card tooth;232, limit slot;24, tension spring;25, tension spring cavity;26, release jacking rod;27, second installation slot;3, bolt pair;4, buffer pad. DETAILED DESCRIPTION

[0021] The utility model embodiments will be described below with reference to the accompanying drawings. Figures 1-5 The technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0022] As shown in the figure, a double convex clamp for pipe connection, comprising a first half hoop 1 and a second half hoop 2, the first half hoop 1 and the second half hoop 2 are fastened and connected by a plurality of bolt pairs 3, the first half hoop 1 and the second half hoop 2 are pre-fastened and connected by a plurality of pre-connection assemblies, a plurality of pre-connection assemblies are respectively arranged on both sides of the first half hoop 1 and the second half hoop 2, the pre-connection assembly comprises a plug-in board 11, a socket block 21 and a limit block, the plug-in board 11 is fixedly connected to the side end of the first half hoop 1, and a plurality of limit card slots 111 with a right triangle cross section are formed on the side end of the plug-in board 11, the socket block 21 is fixedly connected to the side end of the second half hoop 2, and a plug-in hole 22 matched with the plug-in board 11 is formed on the socket block 21, the limit sliding block 23 with a limit card tooth 231 matched with the limit card slot 111 is arranged on the socket block 21, and the tension spring 24 is arranged on the socket block 21 and acts on the limit sliding block 23 to make the limit sliding block 23 have a tendency to slide into the plug-in hole 22, so that the limit convex tooth is inserted into the plug-in hole 22.

[0023] In the above structure, when the double convex clamp is used to connect two pipes, first, the second half clamp 2 is put on the end of the two pipes so that the flange on the outer wall of the pipe is clamped into the groove on the inner wall of the second half clamp 2, then the first half clamp 1 is put on the end of the two pipes so that the insertion plate 11 is aligned with the insertion hole 22, while the first half clamp 1 moves towards the second half clamp 2 to hold the two pipes with the second half clamp 2, the insertion plate 11 is inserted into the insertion hole 22, during the process of the insertion plate 11 gradually inserted into the insertion hole 22, the inclined surface of the limiting card slot 111 and the inclined surface of the limiting card tooth 231 are in contact to make the insertion plate 11 push the limiting sliding block 23 to slide outward, so that the insertion plate 11 can move towards the second half clamp 2 in the insertion hole 22, and the first half clamp 1 gradually moves towards the second half clamp 2 to hold the two pipes with the second half clamp 2, when the first half clamp 1 and the second half clamp 2 move relative to each other to hold the two pipes, the limiting sliding block 23 slides towards the insertion plate 11 under the action of the tension spring 24 to make the limiting card tooth 231 pass through the insertion hole 22 and clamp into the corresponding limiting card slot 111, the flat surface of the limiting card tooth 231 and the flat surface of the limiting card slot 111 cooperate to limit the movement of the insertion plate 11 in the insertion hole 22 away from the second half clamp 2, and limit the movement of the first half clamp 1 away from the second half clamp 2, so that the first half clamp 1 and the second half clamp 2 are kept in the position of holding the two pipes to achieve the pre-tightening connection of the first half clamp 1 and the second half clamp 2, then the bolt pair 3 is threaded through the first half clamp 1 and the second half clamp 2 and tightened, the bolt pair 3 further tightens the first half clamp 1 and the second half clamp 2, so that the first half clamp 1 and the second half clamp 2 are tightly attached to the outer wall of the pipe to achieve the tight connection of the first half clamp 1 and the second half clamp 2, and then the installation of the double convex clamp is completed, during the above installation process of the double convex clamp, the pre-connection assembly is used to achieve the pre-tightening connection of the first half clamp 1 and the second half clamp 2 before the bolt pair 3 is threaded and tightened, so that the first half clamp 1 and the second half clamp 2 remain relatively stable during the tightening process of the bolt pair 3 to ensure the accuracy of the first half clamp 1 and the second half clamp 2 when they are tightly attached to the pipe under the action of the bolt pair 3, thereby ensuring the stability and sealing of the two pipes connected by the double convex clamp, and during the installation operation of the double convex clamp, the first half clamp 1 and the second half clamp 2 are first pre-tightened by the pre-connection assembly, and then tightened by the bolt pair 3, so that the installation operation can be easily completed by one worker, which is convenient for the installation operation of the double convex clamp, and after the tight connection of the first half clamp 1 and the second half clamp 2 is achieved by tightening the bolt pair 3, the pre-connection assembly also tightens the connection of the first half clamp 1 and the second half clamp 2, thereby strengthening the stability of the first half clamp 1 and the second half clamp 2 after the tight connection, and further strengthening the stability of the two pipes connected by the double convex clamp.

[0024] On the basis of the above structure, the limiting clamping groove 111 is symmetrically provided with two rows on both side ends of the plug-in plate 11, the limiting sliding block 23 is symmetrically provided with two on the socket block 21, and the two ends of the tension spring 24 are respectively fixedly connected to the two limiting sliding blocks 23. Through the cooperation of the two rows of limiting clamping grooves 111 provided on the same plug-in plate 11 and the two limiting sliding blocks 23 provided on the same socket block 21, the limiting effect of the relative movement of the plug-in plate 11 and the socket block 21 is strengthened, thereby the stability of the pre-tightening and connecting of the first half hoop 1 and the second half hoop 2 is strengthened, and the fixing connection of the two ends of the tension spring 24 to the limiting sliding blocks 23 through the sleeving of the two limiting sliding blocks 23 facilitates the installation and arrangement of the tension spring 24.

[0025] On the basis of the above structure, the socket block 21 is formed with a tension spring cavity 25 penetrating through both ends, the tension spring 24 is arranged in the tension spring cavity 25, and the two ends of the tension spring 24 are respectively arranged out of both ends of the tension spring cavity 25 and fixedly connected to the two limiting sliding blocks 23. The tension spring 24 is protected and limited in the tension spring cavity 25, so that the tension spring 24 can stably keep between the two limiting sliding blocks 23 to apply force to the limiting sliding block 23 to slide towards the plug-in hole 22, thereby ensuring that the limiting clamping tooth 231 can stably clamp into the limiting clamping groove 111 to limit the movement of the plug-in plate 11 out of the plug-in hole 22.

[0026] On the basis of the above structure, the outer wall of the tension spring cavity 25 is rotatably connected with a release jacking rod 26 between the two limiting sliding blocks 23. When the release jacking rod 26 rotates, the end portion of the release jacking rod 26 abuts against the limiting sliding block 23 to drive the limiting sliding block 23 to slide, so that the limiting clamping tooth 231 exits the plug-in hole 22. When the double convex clamping hoop is removed, the contact jacking rod is rotated to make the two ends of the release jacking rod 26 respectively jolt the two limiting sliding blocks 23 to move away from the plug-in hole 22. When the contact jacking rod is rotated to the horizontal balance position, the limiting clamping tooth 231 exits the plug-in hole 22, so that the limiting clamping tooth 231 exits the limiting clamping groove 111 to release the limiting effect of the movement of the plug-in plate 11 relative to the socket block 21, so that the plug-in plate 11 can conveniently and smoothly exit the plug-in hole 22 to realize the separation of the first half hoop 1 and the second half hoop 2, thereby facilitating the operation when the double convex clamping hoop is removed.

[0027] On the basis of the above structure, the limiting sliding block 23 is provided with a limiting groove 232 matched with the contact jacking rod. When the end portion of the release jacking rod 26 is clamped into the limiting groove 232, the limiting clamping tooth 231 exits the plug-in hole 22. The end portion of the release jacking rod 26 is clamped into the limiting groove 232, so that the release jacking rod 26 is more stably kept at the position of jacking the limiting sliding block 23 to make the limiting clamping tooth 231 exit the plug-in hole 22, thereby facilitating the operation when the double convex clamping hoop is removed.

[0028] On the basis of the above structure, the first half hoop 1 and the second half hoop 2 are clamped with the buffer pad 4 made of elastic material between the side ends, the bolt pair 3 passes through the buffer pad 4, and the buffer pad 4 is located between the first half hoop 1 and the second half hoop 2 to provide space for deformation of the first half hoop 1 and the second half hoop 2 when the bolt pair 3 fastens the first half hoop 1 and the second half hoop 2 to make the first half hoop 1 and the second half hoop 2 closely adhere to the pipeline, so that the first half hoop 1 and the second half hoop 2 have a larger deformable space when subjected to the fastening force of the bolt pair 3, and the first half hoop 1 and the second half hoop 2 are more closely adhered to the pipeline, thereby improving the stability and sealing performance after the pipeline is connected.

[0029] On the basis of the above structure, the first half hoop 1 and the second half hoop 2 are clamped with the buffer pad 4 made of elastic material between the side ends, the bolt pair 3 passes through the buffer pad 4, and the buffer pad 4 is located between the first half hoop 1 and the second half hoop 2 to provide space for deformation of the first half hoop 1 and the second half hoop 2 when the bolt pair 3 fastens the first half hoop 1 and the second half hoop 2 to make the first half hoop 1 and the second half hoop 2 closely adhere to the pipeline, so that the first half hoop 1 and the second half hoop 2 have a larger deformable space when subjected to the fastening force of the bolt pair 3, and the first half hoop 1 and the second half hoop 2 are more closely adhered to the pipeline, thereby improving the stability and sealing performance after the pipeline is connected.

[0030] The above only describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A double convex clamp for pipe connection, comprising a first half clamp (1) and a second half clamp (2), the first half clamp (1) and the second half clamp (2) being fastened by a plurality of bolt pairs (3), characterized in that: The first half hoop (1) and the second half hoop (2) are pre-fastened by a plurality of pre-connection assemblies, the pre-connection assembly comprises a plug-in plate (11), a socket block (21) and a limiting block, the plug-in plate (11) is fixedly connected to the side end of the first half hoop (1), and a plurality of limiting clamping grooves (111) are formed on the side end of the plug-in plate (11) in an interval arrangement, the socket block (21) is fixedly connected to the side end of the second half hoop (2), and a plug-in hole (22) matched with the plug-in plate (11) is formed on the socket block (21), the socket block (21) is provided with a limiting sliding block (23) with a limiting clamping tooth (231) formed on the end portion and matched with the limiting clamping groove (111), and the socket block (21) is provided with a tension spring (24) acting on the limiting sliding block (23) to make the limiting sliding block (23) have a sliding trend into the plug-in hole (22) so that the limiting clamping tooth penetrates into the plug-in hole (22).

2. Double convex clamp for pipe connections according to claim 1, characterized in that: The limiting clamping grooves (111) are symmetrically formed on the two side ends of the plug-in plate (11) in two rows, and the limiting sliding blocks (23) are symmetrically arranged on the socket block (21) in two rows.

3. The bi-convex clamp for pipe connections according to claim 2, characterized in that: The socket block (21) is formed with a tension spring cavity (25) penetrating through the two ends, and the tension spring (24) is arranged in the tension spring cavity (25) and the two ends of the tension spring (24) are respectively arranged out of the two end ports of the tension spring cavity (25) and fixedly connected with the two limiting sliding blocks (23).

4. The bi-convex clamp for pipe connections according to claim 3, characterized in that: The outer wall of the tension spring cavity (25) is rotatably connected with a release jacking rod (26) between the two limiting sliding blocks (23), and when the release jacking rod (26) rotates, the limiting sliding block (23) is driven to slide by the end portion abutting against the limiting sliding block (23) to make the limiting clamping tooth (231) exit the plug-in hole (22).

5. The bi-convex clamp for pipe connections according to claim 4, characterized in that: The limiting sliding block (23) is provided with a limiting groove (232) matched with the contact jacking rod, and when the end portion of the release jacking rod (26) is clamped into the limiting groove (232), the limiting clamping tooth (231) exits the plug-in hole (22).

6. The bi-convex clamp for pipe connections according to claim 1, characterized in that: The first half hoop (1) and the second half hoop (2) are provided with a buffer pad (4) made of elastic material between the side ends, and the bolt pair (3) penetrates through the buffer pad (4).

7. The bi-convex clamp for pipe connections according to claim 6, characterized in that: The first half hoop (1) and the second half hoop (2) are respectively formed with a first mounting groove (12) and a second mounting groove (27) matched with the buffer pad (4) on the inner side of the side end, and the two ends of the buffer pad (4) are respectively arranged in the first mounting groove (12) and the second mounting groove (27).

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