Cold extrusion connection joint for electrical piping and use method thereof

Abstract

The invention relates to the technical field of electrical engineering, and discloses a cold extrusion connecting joint for electrical piping and a using method thereof.The cold extrusion connecting joint comprises a joint structure, and an automatic enclasping and clamping mechanism is installed in the middle of the outer wall of the joint structure and used for fixing the joint structure; fixing mechanisms are installed on the left side and the right side of the rear end of the outer wall of the connector structure correspondingly and used for fixedly connecting the connector structure with the outside. The automatic holding and clamping mechanism comprises an annular clamping block, the annular clamping block is installed in the middle of the outer wall of the connector structure, and a driving assembly is installed in the middle of the outer wall of the connector structure. By rotating the threaded rod, the movable long block can generate displacement in the direction of the threaded rod, through movement of the movable long block, stable operation of the cold extrusion connector in an electrical piping system is guaranteed, and the situation that due to pulling of external force, a connecting part is loosened, and the utilization rate of the connector is reduced is prevented.

Description

Technical Field

[0001] This invention relates to the field of electrical engineering technology, specifically to a cold-extruded connection joint for electrical piping and its application method. Background Technology

[0002] Cold-extruded connectors for electrical conduits are key components used for connecting electrical conduits in the field of electrical engineering. They consist of a plastic metal body and a suitable auxiliary structure. The core of the connection is achieved by cold extrusion technology. Pressure is applied to the connector using a special tool, causing it to deform plastically and fit tightly against the outer wall of the conduit. The interlocking between the materials forms a stable connection, while also providing good electrical conductivity and structural sealing.

[0003] Cold-extruded connectors for electrical conduits are used in building electrical and industrial equipment wiring scenarios, providing reliable protection for the safe and stable operation of electrical conduit systems. Commercially available cold-extruded connectors for electrical conduits require manual alignment of the conduit and connector interface, followed by the application of extrusion pressure using specialized tools to complete the connection. During the connection process, operators must repeatedly adjust the conduit angle and insertion depth to ensure coaxiality, and then slowly apply extrusion pressure. The entire connection process is time-consuming and difficult to operate. Moreover, cold-extruded connectors are subject to external pulling and vibration during use, which can cause the connection to loosen, reducing the connector's usability. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a cold-extruded connection joint for electrical piping and its application method, solving the problem of loosening of the connection parts due to external pulling and vibration in existing technologies.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a cold-extruded connector for electrical piping and its usage method, comprising a connector structure, wherein an automatic clamping mechanism is installed in the middle of the outer wall of the connector structure, the automatic clamping mechanism being used to fix the connector structure, and fixing mechanisms are installed on both the left and right rear sides of the outer wall of the connector structure, the fixing mechanisms being used to fix the connector structure to the outside; the automatic clamping mechanism includes an annular clamping block, the annular clamping block being installed in the middle of the outer wall of the connector structure, a fixing block being fixedly connected to the lower front side of the outer wall of the annular clamping block, a T-shaped fixing plate being installed at the lower bottom of the bottom wall of the fixing block, and a driving assembly being installed in the middle of the outer wall of the connector structure.

[0006] Preferably, the drive assembly includes a threaded rod, which is installed in the middle of the outer wall of the joint structure. A movable long block is fixedly connected to the top wall of the threaded rod. Sliding blocks are slidably connected to the front and rear ends of the outer wall of the movable long block. A rotating shaft is rotatably connected to the lower end of the inner wall of the sliding block. Sliding grooves are provided at the front and rear ends of the outer wall of the movable long block.

[0007] Preferably, the fixing mechanism includes a pipe clamp, which is installed on the left and right rear ends of the outer wall of the connector structure. A connecting post is fixedly connected to the middle of the front end of the outer wall of the pipe clamp. A screw is threaded to the middle of the left side of the inner wall of the pipe clamp, and a screw is threaded to the middle of the right side of the inner wall of the pipe clamp.

[0008] Preferably, the middle part of the outer wall of the threaded rod is threadedly connected to the middle part of the inner wall of the T-shaped fixing plate.

[0009] Preferably, the groove is rectangular in shape.

[0010] Preferably, the outer wall of the connector structure has multiple interlocking marks on both the left and right sides.

[0011] Preferably, the upper part of the inner wall of the sliding block is rotatably connected to the lower end of the bottom wall of the fixed block.

[0012] Preferably, connecting pipes are fixedly connected to both the left and right sides of the inner wall of the joint structure.

[0013] Preferably, the rotating shaft is slidably connected to the movable long block, and the sliding block is rotatably connected to the T-shaped fixed plate.

[0014] A cold-extruded connection joint for electrical conduit and its application method include the following steps: S1. After extrusion, the joint structure 1 is fully fitted with the connecting pipes 5 on both sides. At this time, rotate the threaded rod, and the moving long block moves with it under the displacement of the threaded rod. The displacement of the moving long block causes the sliding blocks on both sides to move. The sliding blocks move on the moving long block through the internal rotating shaft, so that the annular clamping block clamps. S2. Under the sliding action of the sliding block and the T-shaped fixing plate in the middle, the sliding block is fixed in the groove. Then, the fixing block moves the two annular clamping blocks on both sides relative to each other, and finally fixes the joint structure and the connection of the connecting pipe, preventing the joint structure connection from loosening due to external force pulling. S3. When the joint structure needs to be fixed in a designated position for operation, by tightening screw one and screw two, the joint structure and the connecting pipe are fixed under the action of the connecting post. Through the connection of the connecting post and the pipe clamp, the joint structure and the connecting pipe are fixed in the position that needs to be connected to meet various working requirements.

[0015] This invention provides a cold-extruded connection joint for electrical conduit and its application method. It has the following beneficial effects: 1. This invention, by rotating the threaded rod, causes the moving block to shift along the direction of the threaded rod according to the principle of thread transmission. The T-shaped fixing plate stabilizes the components and connects them to the external structure. The movement of the moving block causes the rotating shaft to roll into the groove and limits the sliding trajectory of the sliding block. Ultimately, the moving block is clamped by the annular clamping block driven by the fixing block, thus fixing the joint structure and ensuring the stable operation of the cold extruded joint in the electrical piping system. This prevents the connection from loosening due to external pulling, thus reducing the utilization rate of the joint.

[0016] 2. By rotating screw one and screw two, the inner side of the pipe clamp engages with screw one and screw two through threaded contact. Screw one and screw two move along the threaded holes on the inner wall of the pipe clamp, thereby changing the contact pressure between the pipe clamp and the outer side. Through the coordinated adjustment of screw one and screw two, the inner wall of the pipe clamp can form a uniform clamping force with the joint structure, ultimately fixing the joint structure in the electrical piping system, preventing the joint structure from shifting due to external forces, and ensuring the connection stability of the cold extrusion joint.

[0017] 3. This invention effectively solves the connection stability problems of pipe insertion angle deviation and insufficient depth caused by manual positioning of cold extruded connectors in the prior art by setting an automatic clamping mechanism and a fixing mechanism that can be connected to an external mechanism on the cold extruded connector for electrical piping. This prevents the connector from loosening and falling off. The automatic clamping mechanism ensures accurate engagement of the pipe and connector through the continuous and stable clamping force of the annular clamping block, which greatly improves vibration resistance and connection strength and significantly reduces safety hazards caused by loosening. Attached Figure Description

[0018] Figure 1 This is a front view of the present invention; Figure 2 This is a perspective view of the present invention; Figure 3 This is a schematic diagram of the automatic clamping mechanism of the present invention; Figure 4 This is a partial structural exploded view of the automatic clamping mechanism of the present invention; Figure 5 This is a schematic diagram of the fixing mechanism of the present invention.

[0019] Among them, 1. Joint structure; 2. Automatic clamping mechanism; 201. Ring clamping block; 202. T-shaped fixing plate; 203. Drive assembly; 2031. Threaded rod; 2032. Moving long block; 2033. Sliding block; 2034. Rotating shaft; 2035. Slide groove; 204. Fixing block; 3. Fixing mechanism; 301. Pipe clamp; 302. Connecting column; 303. Screw one; 304. Screw two; 4. Engagement mark; 5. Connecting pipe. Detailed Implementation

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1: Reference Figure 1 , Figure 3 and Figure 4 This invention provides a cold-extruded connection joint for electrical piping and its usage method, including a joint structure 1. An automatic clamping mechanism 2 is installed in the middle of the outer wall of the joint structure 1 to fix the joint structure 1. Fixing mechanisms 3 are installed on both the left and right rear sides of the outer wall of the joint structure 1 for fixed connection between the joint structure 1 and the outside. The automatic clamping mechanism 2 includes an annular clamping block 201, which is installed in the middle of the outer wall of the joint structure 1. A fixing block 204 is fixedly connected to the lower front end of the outer wall of the annular clamping block 201. A T-shaped fixing plate 202 is installed at the lower bottom of the bottom wall of the fixing block 204. The unit is equipped with a drive assembly 203, which includes a threaded rod 2031. The threaded rod 2031 is installed in the middle of the outer wall of the joint structure 1. A movable long block 2032 is fixedly connected to the top wall of the threaded rod 2031. Sliding blocks 2033 are slidably connected to the front and rear ends of the outer wall of the movable long block 2032. A rotating shaft 2034 is rotatably connected to the lower end of the inner wall of the sliding block 2033. Sliding grooves 2035 are opened at the front and rear ends of the outer wall of the movable long block 2032. The middle of the outer wall of the threaded rod 2031 is threadedly connected to the middle of the inner wall of the T-shaped fixing plate 202. The sliding groove 2035 is rectangular in shape. The upper middle part of the inner wall of the sliding block 2033 is rotatably connected to the lower end of the bottom wall of the fixing block 204.

[0022] Specifically, when the threaded rod 2031 is rotated, according to the thread transmission principle, the movable long block 2032 will be displaced along the direction of the threaded rod 2031. The T-shaped fixing plate 202 plays a role in stabilizing the components and connecting with the external structure. Through the movement of the movable long block 2032, the rotating shaft 2034 rolls into the slide groove 2035 and limits the sliding trajectory of the sliding block 2033. Finally, the movable long block 2032 is clamped by the annular clamping block 201 through the fixing block 204, thereby fixing the joint structure 1 and ensuring the stable operation of the cold extrusion connection joint in the electrical piping system.

[0023] Reference Figure 1 and Figure 5 The fixing mechanism 3 includes a pipe clamp 301, which is installed on the left and right sides of the rear end of the outer wall of the connector structure 1. A connecting post 302 is fixedly connected to the middle of the front end of the outer wall of the pipe clamp 301. A screw 303 is threadedly connected to the middle of the left side of the inner wall of the pipe clamp 301, and a screw 304 is threadedly connected to the middle of the right side of the inner wall of the pipe clamp 301.

[0024] Specifically, by rotating screw 303 and screw 304, the inner side of pipe clamp 301 engages with screw 303 and screw 304 through threaded contact. Screw 303 and screw 304 move along the threaded holes on the inner wall of pipe clamp 301, thereby changing the contact pressure between pipe clamp 301 and the outer connection. Through the coordinated adjustment of screw 303 and screw 304, the inner wall of pipe clamp 301 can form a uniform clamping force with joint structure 1, ultimately fixing joint structure 1 in the electrical piping system, preventing joint structure 1 from shifting due to external forces, and ensuring the connection stability of cold extrusion joint.

[0025] Reference Figure 1 and Figure 2 Multiple interlocking marks 4 are provided on the left and right sides of the outer wall of the connector structure 1, and connecting pipes 5 are fixedly connected to the left and right sides of the inner wall of the connector structure 1.

[0026] Specifically, the ends of the two connecting pipe sections 5 to be connected are first deburred. Then, the two connecting pipe sections 5 are inserted into the two ends of the connector structure 1, ensuring that the insertion depth of the connecting pipe sections 5 meets the requirements. Next, a preset pressure is applied to the designated extrusion area of ​​the connector structure 1 using a special cold extrusion device, causing the connector material to undergo plastic deformation in a cold state, tightly wrapping the outer wall of the connecting pipe section 5. At the same time, the outer wall of the connecting pipe section 5 and the inner wall of the connector form a mechanical interlock, leaving multiple interlocking marks 4 on the outer surface of the connector structure 1, thereby achieving the connection of the two connecting pipe sections 5, ensuring the sealing performance and structural stability of the connection, and preventing the wires and cables inside the conduit from being affected by the external environment. After the cold extrusion connection is completed, the resistance of the connection joint is remotely measured. Using an insulation resistance tester, the two probes of the tester are connected to the conductive parts of the connecting pipe sections 5 on both sides of the joint. Under the specified test voltage, the resistance value displayed by the tester is read. This value is used to determine whether the conductivity of the connection part meets the standard, so as to ensure the stability and safety of current transmission in the electrical conduit system.

[0027] Example 2: A cold-extruded connection joint for electrical conduit and its application method include the following steps: S1. After extrusion, the joint structure 1 is fully fitted with the connecting pipes 5 on both sides. At this time, rotate the threaded rod 2031, and the moving long block 2032 moves under the displacement of the threaded rod 2031. The displacement of the moving long block 2032 causes the sliding blocks 2033 on both sides to move. The sliding blocks 2033 move on the moving long block 2032 through the internal rotating shaft 2034, so that the annular clamping block 201 clamps. S2. Under the sliding action of the middle part of the sliding block 2033 and the T-shaped fixing plate 202, the sliding block 2033 is fixed in the sliding groove 2035. Then, the fixing block 204 moves the two annular clamping blocks 201 on both sides relative to each other, and finally fixes the connection between the joint structure 1 and the connecting pipe 5 to prevent the connection of the joint structure 1 from loosening due to external force pulling. S3. When the connector structure 1 needs to be fixed in a designated position for operation, by tightening screw 303 and screw 304, the connector structure 1 and the connecting pipe 5 are fixed under the action of the connecting post 302. Through the connection of the connecting post 302 and the pipe clamp 301, the connector structure 1 and the connecting pipe 5 are fixed in the position to be connected to meet various working requirements.

[0028] Working principle: When using the cold extrusion connector for electrical piping, first clean the ends of the electrical piping to be connected to ensure that the pipe ends are flat and undamaged. Then, select the appropriate cold extrusion tool according to the connector type and perform the butt joint operation. After the butt joint is completed, start the cold extrusion tool to make the mold perform circumferential cold extrusion on the interface area until the tool indicates that the extrusion is complete. Stop the extrusion and remove the tool. When the threaded rod 2031 is rotated, according to the thread transmission principle, the moving long block 2032 will be displaced along the direction of the threaded rod 2031. The T-shaped fixing plate 202 plays a role in stabilizing the components and connecting with the external structure. Through the movement of the moving long block 2032, the rotating shaft 2034 rolls into the slide groove 2035 and limits the sliding trajectory of the sliding block 2033. Finally, the moving long block 2032 drives the annular clamping block 201 to clamp through the fixing block 204, thereby fixing the connector structure 1 and ensuring the stable operation of the cold extrusion connector in the electrical piping system. Rotating screw 303 and screw 304 causes the inner side of pipe clamp 301 to engage with the threads of screw 303 and screw 304. Screw 303 and screw 304 move along the threaded holes on the inner wall of pipe clamp 301, thereby changing the contact pressure between pipe clamp 301 and the outer connection. Connecting post 302 is fixed on joint structure 1. Through the coordinated adjustment of screw 303 and screw 304, the inner wall of pipe clamp 301 can form a uniform clamping force with joint structure 1, ultimately fixing joint structure 1 in the electrical piping system, preventing joint structure 1 from shifting due to external forces, and ensuring the connection stability of cold extrusion joint.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cold-extruded connection joint for electrical conduit, comprising a joint structure (1), characterized in that, An automatic clamping mechanism (2) is installed in the middle of the outer wall of the connector structure (1). The automatic clamping mechanism (2) is used to fix the connector structure (1). Fixing mechanisms (3) are installed on the left and right sides of the rear end of the outer wall of the connector structure (1). The fixing mechanisms (3) are used to fix the connector structure (1) to the outside. The automatic clamping mechanism (2) includes an annular clamping block (201), which is installed in the middle of the outer wall of the joint structure (1). A fixing block (204) is fixedly connected to the lower front side of the outer wall of the annular clamping block (201). A T-shaped fixing plate (202) is installed at the lower bottom of the bottom wall of the fixing block (204). A drive assembly (203) is installed in the middle of the outer wall of the joint structure (1).

2. The cold-extruded connection joint for electrical conduit according to claim 1, characterized in that, The drive assembly (203) includes a threaded rod (2031), which is installed in the middle of the outer wall of the joint structure (1). A movable long block (2032) is fixedly connected to the top wall of the threaded rod (2031). Sliding blocks (2033) are slidably connected to the front and rear ends of the outer wall of the movable long block (2032). A rotating shaft (2034) is rotatably connected to the lower end of the inner wall of the sliding block (2033). Sliding grooves (2035) are provided at the front and rear ends of the outer wall of the movable long block (2032).

3. The cold-extruded connection joint for electrical conduit according to claim 1, characterized in that, The fixing mechanism (3) includes a pipe clamp (301), which is installed on the left and right sides of the rear end of the outer wall of the connector structure (1). A connecting post (302) is fixedly connected to the middle of the front end of the outer wall of the pipe clamp (301). A screw (303) is threadedly connected to the middle of the left side of the inner wall of the pipe clamp (301), and a screw (304) is threadedly connected to the middle of the right side of the inner wall of the pipe clamp (301).

4. A cold-extruded connection joint for electrical conduit according to claim 2, characterized in that, The outer wall of the threaded rod (2031) is threadedly connected to the inner wall of the T-shaped fixing plate (202).

5. A cold-extruded connection joint for electrical conduit according to claim 2, characterized in that, The groove (2035) is rectangular in shape.

6. A cold-extruded connection joint for electrical conduit according to claim 1, characterized in that, The joint structure (1) has multiple interlocking marks (4) on both the left and right sides of its outer wall.

7. A cold-extruded connection joint for electrical conduit according to claim 2, characterized in that, The upper part of the inner wall of the sliding block (2033) is rotatably connected to the lower end of the bottom wall of the fixed block (204).

8. A cold-extruded connection joint for electrical conduit according to claim 1, characterized in that, The inner walls of the joint structure (1) are fixedly connected to the left and right sides of the connecting pipe (5).

9. A cold-extruded connection joint for electrical conduit according to claim 2, characterized in that, The rotating shaft (2034) is slidably connected to the moving long block (2032), and the sliding block (2033) is rotatably connected to the T-shaped fixing plate (202).

10. A cold-extruded connection joint for electrical conduit and its method of use, characterized in that, A cold-extruded connection joint for electrical conduit according to any one of claims 1-9 comprises the following steps: S1. After extrusion, the joint structure 1 is fully fitted with the connecting pipes 5 on both sides. At this time, rotate the threaded rod (2031), and the moving long block (2032) moves under the displacement of the threaded rod (2031). The displacement of the moving long block (2032) causes the sliding blocks (2033) on both sides to move. The sliding block (2033) moves on the moving long block (2032) through the internal rotating shaft (2034), so that the annular clamping block (201) clamps it. S2. Under the sliding action of the sliding block (2033) and the T-shaped fixing plate (202) in the middle, the sliding block (2033) is fixed in the groove (2035), and then the fixing block (204) moves the two annular clamping blocks (201) relative to each other, so as to finally fix the connection between the joint structure (1) and the connecting pipe (5) and prevent the joint structure (1) from loosening due to external force pulling. S3. When the connector structure (1) needs to be fixed in a designated position for work, by turning screw one (303) and screw two (304), the connector structure (1) and the connecting pipe (5) are fixed under the action of the connecting post (302). Through the connection of the connecting post (302) and the pipe clamp (301), the connector structure (1) and the connecting pipe (5) are fixed as a whole in the position to be connected, so as to meet various work requirements.

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