Explosion-proof cable joint

Abstract

The utility model belongs to the technical field of cable installation, and particularly relates to an explosion-proof cable joint, which comprises a connecting disc, a connecting part, a connecting main body and a pressing assembly, and is characterized in that the connecting disc is used for being fixedly connected with an equipment shell, and a through hole is formed in the connecting disc; the connecting part is inserted into the through hole, an internal threaded hole coaxial with the through hole is formed in the connecting part, the internal threaded hole penetrates through the whole connecting part, and one end of the connecting part extends out of the through hole of the connecting disc; the connecting main body is a hollow pipe body coaxial with the internal threaded hole, a first external thread and a second external thread are arranged at the two ends of the outer side wall of the connecting main body respectively, the first external thread is connected with the internal threaded hole, and the second external thread is connected with the pressing assembly; and a cable which sequentially penetrates through the connecting main body, the connecting part and the connecting disc is pressed and fixed with the connecting main body through the pressing assembly. According to the device, the cable can be directly installed and fixed on the outer side of the equipment shell in the cable leading-in process, the device is not limited by the internal space of the shell, installation is flexible and convenient, and universality is better.

Description

Technical Field

[0001] This utility model belongs to the field of cable installation technology, and specifically relates to an explosion-proof cable connector. Background Technology

[0002] Mining equipment refers to all kinds of machinery and tools used in the mining, processing, and transportation of ores and other mineral resources. These devices are diverse and can be categorized into mining equipment, transportation equipment, crushing and screening equipment, and washing and beneficiation equipment, depending on their function and application. They play a crucial role in modern mining, and their efficiency and reliability directly affect the mine's production efficiency and economic benefits. These mining devices require power supply via cables during installation, and due to the special nature of their working environment, the stability of the cable connection is paramount.

[0003] Most existing cable entry devices for mining equipment use a nut-tightening installation method. While this method offers good connection stability, long-term experience in cable entry installation has revealed significant limitations. For example, nut-tightening requires high precision in terms of equipment housing wall thickness and through-hole diameter. Before installation, fasteners are installed on the cable, with matching nuts and bolts attached. The bolts need to penetrate the side wall of the equipment housing. If the equipment wall is too thick, the bolt length may be insufficient to reach the inside of the equipment and engage with the nut, making installation impossible. Furthermore, nut-tightening requires tightening the nut from the inside of the equipment. If the internal space is narrow or the equipment is difficult to open, this installation structure presents significant challenges, hindering cable entry and resulting in poor versatility. Summary of the Invention

[0004] In order to solve the problems existing in the prior art, the purpose of this utility model is to provide an explosion-proof cable connector that can directly install and fix the cable on the outside of the equipment housing during the cable introduction process, without being limited by the internal space and wall thickness of the equipment housing, making the installation flexible and convenient, and with better versatility.

[0005] The technical solution of this utility model is:

[0006] An explosion-proof cable connector, comprising:

[0007] A connecting plate is used to connect and fix it to the equipment housing, and the connecting plate has a through hole;

[0008] A connecting part is inserted into the through hole and fixedly connected to the connecting plate. One end of the connecting part extends out of the through hole, and the connecting part is provided with an internal threaded hole that penetrates the entire connecting part.

[0009] The connecting body is a hollow tube coaxial with the internal threaded hole. The two ends of the outer side wall of the connecting body are respectively provided with a first external thread and a second external thread, and the first external thread is connected to the internal threaded hole.

[0010] A clamping assembly is connected to a second external thread on the connecting body. The clamping assembly is used to clamp and fix the cable that passes through the connecting body, the connecting part and the connecting disc in sequence to the connecting body.

[0011] Preferably, a limiting boss is fitted and fixed on the connecting body. The limiting boss is located between the first external thread and the second external thread. The limiting boss faces the connecting part and is provided with a sealing gasket between itself and the connecting part.

[0012] Preferably, the connecting plate is square, and a slot is formed at each of the four corners of the connecting plate. A screw is inserted into the slot, and the length of the slot is greater than the diameter of the screw's cross-section. The screw is used to connect and fix with the screw hole on the equipment housing.

[0013] Preferably, the clamping assembly includes:

[0014] A clamping claw is inserted at the end of the connecting body away from the connecting plate. The clamping claw has an inner hole coaxial with the connecting body. The side of the clamping claw away from the connecting plate is provided with a circumferentially distributed pressing part. The end of the pressing part away from the connecting plate is inclined towards the axis of the inner hole. The clamping claw is made of ABS resin.

[0015] A clamping ring is inserted into the inner hole of the clamping claw and extends out from the end away from the connecting plate. The clamping ring is made of silicone rubber.

[0016] A tightening nut is fitted onto the clamping claw and screwed into the second external thread of the connecting body. The tightening nut is made of a rigid material.

[0017] Preferably, the wall thickness of the connecting part is greater than 3 mm.

[0018] Preferably, the length of the connecting part is 4mm-6mm, and the length of the connecting part is greater than the thickness of the connecting plate.

[0019] Preferably, the distance between two adjacent slots is 20mm-28mm.

[0020] Preferably, an elastic washer is installed on the side of the connecting plate opposite to the connecting body.

[0021] Preferably, both the sealing gasket and the elastic gasket are made of silicone rubber.

[0022] Compared with the prior art, the explosion-proof cable connector of this utility model has the following advantages:

[0023] This device, through the design of the connecting plate, fixes the connecting plate to the equipment housing. Then, it connects the connecting body to the connecting part and the clamping assembly on the connecting plate, thereby allowing the cable to pass through the clamping assembly, the connecting body, the connecting part, and the connecting plate in sequence into the equipment. This effectively fixes the cable to the equipment. Compared with flange installation or nut tightening installation, this device is not limited by the opening position on the equipment housing, the internal space of the equipment, or the wall thickness of the equipment housing. It can directly fix the cable on the outside of the equipment housing, making the installation more convenient, flexible, and versatile. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure in an embodiment of the present utility model;

[0025] Figure 2 This is an exploded view of the overall structure in an embodiment of this utility model;

[0026] Figure 3 This is a cross-sectional view of the overall structure in an embodiment of this utility model;

[0027] Figure 4 This is a schematic diagram of the connecting disk in an embodiment of the present utility model;

[0028] Figure 5 for Figure 4 Sectional view of AA;

[0029] Figure 6 This is a schematic diagram of the installation and application structure of the device in the embodiment of this utility model.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Connecting disc; 2. Connecting part; 3. Internal threaded hole; 4. Connecting body; 5. First external thread; 6. Second external thread; 7. Clamping assembly; 71. Clamping claw; 72. Extrusion part; 73. Clamping ring; 74. Compressive nut; 8. Limiting boss; 9. Sealing gasket; 10. Slot; 11. Screw; 12. Elastic washer; 13. Equipment housing; 14. Sealing plug; 15. Cable; 16. Flat washer. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0033] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0034] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0035] See Figures 1 to 6 As shown, in order to enable flexible and convenient installation without being limited by the internal space of the housing during the cable 15 introduction process, improve the versatility of the installation, adapt to different equipment cable 15 introduction installations, and reduce the types of production material management, this embodiment provides an explosion-proof cable connector that can be adapted to various installation structures. It includes a connecting plate 1, a connecting part 2, a connecting body 4, and a clamping assembly 7. The connecting plate 1 is used for connection and fixation to the equipment housing 13. Preferably, the connecting plate 1 is adapted to the cable 15 inlet position on the equipment housing 13 during installation, and the fixing of the connecting plate 1 to the equipment housing 13 can be achieved by welding or screw 11 connection, depending on the actual situation. A through hole is provided on the connecting plate 1; the connecting part 2 is inserted into the through hole and fixedly connected to the connecting plate 1. Preferably, the connecting part 2 and the connecting plate 1 can be integrally formed during casting. Furthermore, an internal threaded hole 3 coaxial with the through hole is provided on the connecting part 2. The internal threaded hole 3 penetrates the entire connecting part 2, and one end of the connecting part 2 extends out of the through hole of the connecting plate 1. Furthermore, the connecting body 4 is designed as a hollow tube coaxial with the internal threaded hole 3. The two ends of the outer side wall of the connecting body 4 are respectively provided with a first external thread 5 and a second external thread 6. The first external thread 5 is connected to the internal threaded hole 3, and the second external thread 6 is connected to the clamping assembly 7.

[0036] When installing and applying cable 15, first fix the connecting plate 1 to the corresponding position on the equipment housing 13. Then connect the connecting plate 1, the connecting body 4, and the clamping assembly 7 in sequence. After the connection is completed, pass the cable 15 through the connecting body 4, the connecting part 2, and the connecting plate 1 in sequence into the equipment and connect it to the connection end of the equipment. Then, use the clamping assembly 7 to tighten the cable 15 to the connecting body 4, thus realizing the installation and fixation of the cable 15 to the equipment. The installation is flexible and convenient, and can better adapt to the installation of different equipment cables 15. It is not limited by the opening position on the equipment housing 13, the internal space of the equipment, or the wall thickness of the equipment housing 13, and has good versatility.

[0037] See Figure 2 and Figure 3As shown, furthermore, to ensure the stability of the cable 15 connection, a limiting boss 8 is fitted and fixed on the connecting body 4. The limiting boss 8 is located between the first external thread 5 and the second external thread 6. The limiting boss 8 faces the connecting part 2 and a sealing gasket 9 is provided between it and the connecting part 2. The sealing gasket 9 is made of silicone rubber. During installation, the connecting body 4 is connected to the connecting part 2 through the first external thread 5. During the tightening process, the sealing gasket 9 is compressed and deformed. Thus, the elasticity of the sealing gasket 9 can be used to ensure the tightness of the connection between the connecting part 2 and the connecting body 4.

[0038] See Figure 2 and Figure 4 As shown, furthermore, to facilitate the installation of mining equipment housings 13 with various opening sizes and to facilitate the installation and disassembly of the device, the connecting plate 1 is square. A slot 10 is machined at each of the four corners of the connecting plate 1. The slot 10 is fitted with a screw 11, and the length of the slot 10 is greater than the diameter of the screw 11's cross-section. Preferably, the distance between two adjacent slots 10 should be controlled between 20mm and 28mm, depending on the actual equipment application. Additionally, the screw 11 can be of size M3×12. Thus, during use, the screw 11 connects to the inherent mounting holes on the equipment housing 13, enabling quick fixation of the connecting plate 1 to the equipment housing 13, facilitating the installation and fixation of the cable 15. Simultaneously, the screw connection method also facilitates the removal of the connecting plate 1 from the equipment, offering convenience and flexibility. In addition, to ensure the connection is secure, a silicone rubber elastic washer 12 is installed between the connecting plate 1 and the equipment housing 13. During installation, the elastic properties of the elastic washer 12 can be used to keep the connection between the screw 11 and the screw hole on the equipment housing 13 tight and stable.

[0039] See Figure 2 , Figure 3 and Figure 6As shown, further, in order to ensure the stability of the cable 15 connection, the clamping assembly 7 includes clamping claws 71, clamping rings 73, and clamping nuts 74. In use, the clamping claw 71 is inserted into the hole at one end of the second external thread 6 of the connecting body 4, and the clamping ring 73 is inserted into the inner hole of the clamping claw 71. The inner hole of the clamping claw 71 is coaxial with the connecting body 4, and a circumferentially distributed pressing part 72 is provided on the side of the clamping claw 71 away from the connecting plate 1. The end of the pressing part 72 away from the connecting plate 1 is inclined towards the axis of the inner hole, and the pressing part 72 is exposed on the outside of the clamping claw 71. Finally, the tightening nut 74 is connected to one end of the second external thread 6 on the connecting body 4. Before tightening, the cable 15 is passed through the middle through hole of the tightening nut 74, and then passes through the clamping ring 73, the connecting body 4, the connecting part 2 and the connecting plate 1 in sequence to enter the equipment housing 13. Finally, the tightening nut 74 is tightened to compress the clamping ring 73 and the clamping claw 71 to fix the cable 15. Preferably, when the cable 15 is not installed, the sealing plug 14 can be inserted into the tightening nut 74 and the clamping claw 71, and then the tightening nut 74 can be tightened. Preferably, the clamping claw 71 is made of ABS resin, the clamping ring 73 is made of silicone rubber, and the tightening nut 74 is made of a rigid material, such as stainless steel.

[0040] See Figure 1 As shown, furthermore, in order to improve the firmness and stability of the device connection, the wall thickness of the connecting part 2 should be greater than 3mm during the processing; the length of the connecting part 2 should be set at 4mm-6mm, and the length of the connecting part 2 should be greater than the thickness of the connecting plate 1.

[0041] The working principle of this device is as follows:

[0042] When installing and applying the cable 15, first fix the connecting plate 1 to the corresponding position on the equipment housing 13. If the equipment housing 13 has a corresponding connecting screw hole, use the screw 11 on the connecting plate 1 to connect it. If there is no connecting screw hole on the equipment housing 13, you can also make a suitable screw hole and connect it with the screw 11 according to the actual situation, or directly fix the connecting plate 1 to the equipment housing 13 by welding. Then, use the connecting body 4 to connect the connecting plate 1 and the clamping assembly 7 in sequence. Specifically, the clamping claw 71 is inserted into the hole at one end of the second external thread 6 of the connecting body 4, and the clamping ring 73 is inserted into the inner hole of the clamping claw 71. Then, the tightening nut 74 is initially connected to one end of the second external thread 6 on the connecting body 4. Before tightening the tightening nut 74, the cable 15 to be installed is passed through the middle through hole of the tightening nut 74, the clamping ring 73, the connecting body 4, the connecting part 2, and the connecting disc 1 in sequence into the equipment housing 13. Finally, the tightening nut 74 is tightened to compress the clamping ring 73 and the clamping claw 71, thereby fixing the cable 15. The installation is flexible and convenient, and can better adapt to the installation of different equipment cables 15. It is not limited by the opening position on the equipment housing 13, the internal space of the equipment, or the wall thickness of the equipment housing 13, and has good versatility.

[0043] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. An explosion-proof cable connector, characterized in that, include: A connecting plate (1) is used to connect and fix with the equipment housing (13), and a through hole is provided on the connecting plate (1); The connecting part (2) is inserted into the through hole and fixedly connected to the connecting plate (1). One end of the connecting part (2) extends out of the through hole, and the connecting part (2) is provided with an internal thread hole (3). The internal thread hole (3) penetrates the entire connecting part (2). The connecting body (4) is a hollow tube coaxial with the internal threaded hole (3). The two ends of the outer side wall of the connecting body (4) are respectively provided with a first external thread (5) and a second external thread (6). The first external thread (5) is connected to the internal threaded hole (3). The clamping assembly (7) is connected to the second external thread (6) on the connecting body (4). The clamping assembly (7) is used to clamp and fix the cable (15) that passes through the connecting body (4), the connecting part (2) and the connecting plate (1) in sequence on the connecting body (4).

2. The explosion-proof cable connector according to claim 1, characterized in that, A limiting boss (8) is fitted and fixed on the connecting body (4). The limiting boss (8) is located between the first external thread (5) and the second external thread (6). The limiting boss (8) faces the connecting part (2) and is provided with a sealing gasket (9) between it and the connecting part (2).

3. The explosion-proof cable connector according to claim 2, characterized in that, The connecting plate (1) is square, and a slot (10) is opened at each of the four corners of the connecting plate (1). A screw (11) is inserted in the slot (10), and the length of the slot (10) is greater than the diameter of the cross-section of the screw (11). The screw (11) is used to connect and fix with the screw hole on the equipment housing (13).

4. The explosion-proof cable connector according to claim 1, characterized in that, The clamping assembly (7) includes: A clamping claw (71) is inserted into the end of the connecting body (4) away from the connecting disk (1). The clamping claw (71) has an inner hole coaxial with the connecting body (4). The clamping claw (71) has a circumferentially distributed extrusion part (72) on the side away from the connecting disk (1). The end of the extrusion part (72) away from the connecting disk (1) is inclined towards the axis of the inner hole. The clamping claw (71) is made of ABS resin. A clamping ring (73) is inserted into the inner hole of the clamping claw (71) and extends out from the end away from the connecting plate (1). The clamping ring (73) is made of silicone rubber. A tightening nut (74) is fitted onto the clamping claw (71) and screwed into the second external thread (6) of the connecting body (4). The tightening nut (74) is made of rigid material.

5. The explosion-proof cable connector according to claim 1, characterized in that, The wall thickness of the connecting part (2) is greater than 3 mm.

6. The explosion-proof cable connector according to claim 1, characterized in that, The length of the connecting part (2) is 4mm-6mm, and the length of the connecting part (2) is greater than the thickness of the connecting plate (1).

7. The explosion-proof cable connector according to claim 3, characterized in that, The distance between two adjacent slots (10) is 20mm-28mm.

8. The explosion-proof cable connector according to claim 3, characterized in that, An elastic washer (12) is installed on the side of the connecting plate (1) away from the connecting body (4).

9. An explosion-proof cable connector according to claim 8, characterized in that, Both the sealing gasket (9) and the elastic gasket (12) are made of silicone rubber.

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