Three-layer co-extrusion type cable intermediate joint

Abstract

The utility model relates to the technical field of cable joints, and discloses a three-layer co-extrusion type cable intermediate joint, the right side of a first joint is provided with a second joint, the left side of the second joint is in contact with the right side of the first joint, the top of the first joint is provided with a fixing mechanism, and the fixing mechanism comprises a threaded rod. The threaded rod is rotatably connected to the inner top of the first connector, the left side of the threaded rod is fixedly connected with a rotating disc, the right side of the rotating disc is fixedly connected with a supporting piece, the periphery of the threaded rod is in threaded connection with a threaded block, the left side of the top of the threaded block is fixedly connected with an arc-shaped plate, and the inner side of the arc-shaped plate is rotatably connected with a rotating plate; and the bottom of the rotating plate is fixedly connected with an arc-shaped telescopic rod. The fireproof layer and the insulating layer are arranged, so that the first connector and the second connector are better in fireproof performance, creep resistance, potential stress influence resistance, electric conduction compensation performance and heat conduction effect, the wear-resistant layer is arranged, the wear-resistant effect of the first connector and the second connector is better, and the service life of the first connector and the second connector is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of cable joints, in particular to a three-layer co-extruded cable intermediate joint. Background Art

[0002] The three-layer co-extrusion technology refers to adding an intermediate layer between the outer layer and the inner layer of the intermediate joint. The cable joint, also known as the cable head, is after the cable is laid. In order to connect it into a continuous line, each section must be connected as a whole. These connection points are called cable joints. The cable joint in the middle of the cable line is called the intermediate joint.

[0003] The cable intermediate joint explosion-proof box with announcement number CN 218633295 U can be equipped with an automatic fire extinguisher on the outside of the explosion-proof box, and the fire extinguishing agent spraying port of the automatic fire extinguisher is connected to the box body. The automatic fire extinguisher can automatically inject fire extinguishing agent, such as ultra-fine dry powder or aerosol, into the box body when a fire occurs in the cable intermediate joint in the box body, so as to put out the flame in the box body in time and prevent the fire from spreading to other surrounding equipment.

[0004] The explosion-proof box of the cable intermediate joint is installed by a plurality of fixing bolts. When the staff installs the explosion-proof box, a plurality of bolts need to be installed to initially fix the explosion-proof box. The initial installation time of the explosion-proof box is long, which affects the work efficiency, and therefore needs to be improved. Utility Model Content

[0005] The purpose of the utility model is to provide a three-layer co-extruded cable intermediate joint to solve the problems raised in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical solution: a three-layer co-extruded cable intermediate joint, comprising a first joint, a second joint is arranged on the right side of the first joint, the left side of the second joint contacts the right side of the first joint, and a fixing mechanism is arranged on the top of the first joint;

[0007] The fixing mechanism includes a threaded rod, which is rotatably connected to the top of the first joint, a rotating disk is fixedly connected to the left side of the threaded rod, and a support is fixedly connected to the right side of the rotating disk. A threaded block is threadedly connected to the outer periphery of the threaded rod, an arc plate is fixedly connected to the left side of the top of the threaded block, and a rotating plate is rotatably connected to the inner side of the arc plate. An arc-shaped telescopic rod is fixedly connected to the bottom of the rotating plate, and the bottom of the arc-shaped telescopic rod is fixedly connected to the top of the threaded block. A spring is sleeved on the outer periphery of the arc-shaped telescopic rod, and a plug plate is engaged and clamped on the rotating plate, and the plug plate is fixedly connected to the top of the second joint.

[0008] Preferably, a fixing groove corresponding to the movement trajectory of the support member is opened on the left side of the first joint, and the support member is rotatably connected to the inside of the fixing groove. The opening of the fixing groove makes the rotation of the support member more stable, and the support member can support the rotating disk, making the rotating disk more stable during rotation.

[0009] Preferably, the top of the spring is fixedly connected to the bottom of the rotating plate, and the bottom of the spring is fixedly connected to the top of the threaded block. When the insert plate does not press the rotating plate, the spring drives the rotating plate to move downward through the arc-shaped telescopic rod, so that the rotating plate limits the insert plate.

[0010] Preferably, a sliding groove corresponding to the movement trajectory of the threaded block is opened at the top of the first joint, and the threaded block is slidably connected inside the sliding groove. The opened sliding groove can limit the threaded block, making the threaded block more stable during movement.

[0011] Preferably, the right side of the rotating plate is an inclined surface, the left side of the plug plate is an inclined surface, and the right side of the rotating plate and the left side of the plug plate fit together. When the plug plate squeezes the rotating plate, the rotating plate can drive the arc-shaped telescopic rod and the spring to stretch. When the plug plate does not squeeze the rotating plate, the rotating plate can limit the plug plate, so that the first joint and the second joint are connected more tightly.

[0012] Preferably, the first joint comprises a wear-resistant layer, an insulating layer is fixedly connected to the bottom of the wear-resistant layer, and a fireproof layer is fixedly connected to the bottom of the insulating layer.

[0013] Preferably, the wear-resistant layer is the outermost layer, and the material used for the wear-resistant layer is polyetheretherketone; the insulating layer is the middle layer, and the material used for the insulating layer is polyetherimide; the fireproof layer is the innermost layer, and the material used for the fireproof layer is graphite. By setting the fireproof layer, the fireproof and conductive effects of the first joint and the second joint are better. By setting the insulating layer, the creep resistance, resistance to potential stress, conductive compensation performance, and thermal conductivity of the first joint and the second joint are better. By setting the friction resistance, the first joint and the second joint are not easily damaged.

[0014] Compared with the prior art, the utility model provides a three-layer co-extruded cable intermediate joint, which has the following beneficial effects:

[0015] 1. The three-layer co-extruded cable intermediate joint has a fixing mechanism provided. When two cables are connected and the cable joint needs to be protected, the first joint and the second joint are passed through the cable, and the right side of the first joint is in contact with the left side of the second joint, so that the plug plate can squeeze the rotating plate, and the rotating plate drives the spring to move upward through the arc-shaped telescopic rod. When the plug plate does not squeeze the rotating plate, the spring drives the rotating plate to move downward through the arc-shaped telescopic rod, so that the rotating plate limits the plug plate. When the tightness of the connection between the first joint and the second joint needs to be adjusted, the threaded rod is driven to rotate through the rotating disk, so that the threaded rod drives the threaded block to move, and the threaded block drives the rotating plate to move, so that the rotating plate pulls the plug plate, so that the second joint is more tightly connected to the first joint.

[0016] 2. The three-layer co-extruded cable intermediate joint has better fire resistance, creep resistance, resistance to potential stress, conductive compensation performance, and thermal conductivity of the first joint and the second joint by setting the fireproof layer and the insulating layer. The wear-resistant layer has better wear resistance of the first joint and the second joint, thereby increasing the service life of the first joint and the second joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative labor:

[0018] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the fixed mechanism structure;

[0020] Figure 3 It is a schematic diagram of the plug board structure;

[0021] Figure 4 It is a schematic diagram of the arc-shaped telescopic rod and spring structure;

[0022] Figure 5 It is a schematic diagram of the layered structure of the first joint and the second joint materials.

[0023] In the figure: 1. first joint; 2. fixing mechanism; 21. rotating disk; 22. supporting member; 23. threaded rod; 24. arc plate; 25. rotating plate; 26. threaded block; 27. plug plate; 28. arc telescopic rod; 29. ​​spring; 3. second joint; 4. fireproof layer; 5. insulating layer; 6. wear-resistant layer. DETAILED DESCRIPTION

[0024] 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 in 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.

[0025] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] The utility model provides the following technical solutions:

[0027] Embodiment 1

[0028] See also Figure 1-5 The utility model provides a technical solution: a three-layer co-extruded cable intermediate joint, comprising a first joint 1, a second joint 3 is arranged on the right side of the first joint 1, the left side of the second joint 3 is in contact with the right side of the first joint 1, and a fixing mechanism 2 is arranged on the top of the first joint 1;

[0029] The fixing mechanism 2 includes a threaded rod 23, which is rotatably connected to the top of the first joint 1, a rotating disk 21 is fixedly connected to the left side of the threaded rod 23, a support member 22 is fixedly connected to the right side of the rotating disk 21, a threaded block 26 is threadedly connected to the outer periphery of the threaded rod 23, an arc plate 24 is fixedly connected to the left side of the top of the threaded block 26, a rotating plate 25 is rotatably connected to the inner side of the arc plate 24, an arc-shaped telescopic rod 28 is fixedly connected to the bottom of the rotating plate 25, the bottom of the arc-shaped telescopic rod 28 is fixedly connected to the top of the threaded block 26, a spring 29 is sleeved on the outer periphery of the arc-shaped telescopic rod 28, the rotating plate 25 is engaged and clamped with a plug plate 27, and the plug plate 27 is fixedly connected to the top of the second joint 3.

[0030] Furthermore, a fixing groove corresponding to the movement trajectory of the support member 22 is opened on the left side of the first joint 1, and the support member 22 is rotatably connected to the inside of the fixing groove. The opening of the fixing groove makes the rotation of the support member 22 more stable, and the support member 22 can support the rotating disk 21, making the rotating disk 21 more stable during the rotation process.

[0031] Furthermore, the top of the spring 29 is fixedly connected to the bottom of the rotating plate 25, and the bottom of the spring 29 is fixedly connected to the top of the threaded block 26. When the plug plate 27 does not squeeze the rotating plate 25, the spring 29 drives the rotating plate 25 to move downward through the arc-shaped telescopic rod 28, so that the rotating plate 25 limits the plug plate 27.

[0032] Furthermore, a slide groove corresponding to the movement trajectory of the threaded block 26 is opened at the top of the first joint 1, and the threaded block 26 is slidably connected inside the slide groove. The opened slide groove can limit the threaded block 26, making the threaded block 26 more stable during movement.

[0033] Furthermore, the right side of the rotating plate 25 is an inclined surface, the left side of the plug plate 27 is an inclined surface, and the right side of the rotating plate 25 and the left side of the plug plate 27 fit together. When the plug plate 27 squeezes the rotating plate 25, the rotating plate 25 can drive the arc-shaped telescopic rod 28 and the spring 29 to stretch. When the plug plate 27 does not squeeze the rotating plate 25, the rotating plate 25 can limit the plug plate 27, so that the first joint 1 and the second joint 3 are connected more tightly.

[0034] Embodiment 2

[0035] See also Figure 1-5 On the basis of the first embodiment, the first joint 1 further comprises a wear-resistant layer 6, an insulating layer 5 is fixedly connected to the bottom of the wear-resistant layer 6, and a fireproof layer 4 is fixedly connected to the bottom of the insulating layer 5.

[0036] Furthermore, the wear-resistant layer 6 is the outermost layer, and the material used for the wear-resistant layer 6 is polyetheretherketone; the insulating layer 5 is the middle layer, and the material used for the insulating layer 5 is polyetherimide; the fireproof layer 4 is the innermost layer, and the material used for the fireproof layer 4 is graphite. By setting the fireproof layer 4, the fireproof effect of the first joint 1 and the second joint 3 is better. By setting the insulating layer 5, the creep resistance, resistance to potential stress, conductive compensation performance, and thermal conductivity of the first joint 1 and the second joint 3 are better. By setting the friction resistance, the first joint 1 and the second joint 3 are not easily damaged.

[0037] In actual operation, when the device is used, after the two cables are connected, when the cable joint needs to be protected, the first joint 1 and the second joint 3 are passed through the cable, and the right side of the first joint 1 and the left side of the second joint 3 are in contact with each other, so that the plug plate 27 can squeeze the rotating plate 25, so that the rotating plate 25 drives the spring 29 to move upward through the arc-shaped telescopic rod 28. When the plug plate 27 does not squeeze the rotating plate 25, the spring 29 drives the rotating plate 25 to move downward through the arc-shaped telescopic rod 28, so that the rotating plate 25 limits the plug plate 27. When the tightness of the connection between the first joint and the second joint 3 needs to be adjusted, the threaded rod 23 is driven to rotate by the rotating disk 21, so that the threaded rod 23 drives the threaded block 26 to move, so that the threaded block 26 drives the rotating plate 25 to move, so that the rotating plate 25 pulls the plug plate 27, so that the second joint 3 is more tightly connected to the first joint 1;

[0038] By setting the fireproof layer 4 and the insulating layer 5, the fireproof and creep resistance, resistance to potential stress, conductive compensation performance, and thermal conductivity of the first joint 1 and the second joint 3 are improved. By setting the wear-resistant layer 6, the wear resistance of the first joint 1 and the second joint 3 is improved, thereby increasing the service life of the first joint 1 and the second joint 3.

[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A three-layer co-extruded cable intermediate joint, comprising a first joint (1), characterized in that: A second joint (3) is arranged on the right side of the first joint (1); the left side of the second joint (3) is in contact with the right side of the first joint (1); and a fixing mechanism (2) is arranged on the top of the first joint (1); The fixing mechanism (2) comprises a threaded rod (23), the threaded rod (23) being rotatably connected to the top of the first joint (1), the left side of the threaded rod (23) being fixedly connected to a rotating disk (21), the right side of the rotating disk (21) being fixedly connected to a supporting member (22), the outer periphery of the threaded rod (23) being threadably connected to a threaded block (26), the left side of the top of the threaded block (26) being fixedly connected to an arc-shaped plate (24), the inner side of the arc-shaped plate (24) being rotatably connected to a rotating plate (25), the bottom of the rotating plate (25) being fixedly connected to an arc-shaped telescopic rod (28), the bottom of the arc-shaped telescopic rod (28) being fixedly connected to the top of the threaded block (26), the outer periphery of the arc-shaped telescopic rod (28) being sleeved with a spring (29), the rotating plate (25) being engaged and clamped with an insert plate (27), and the insert plate (27) being fixedly connected to the top of the second joint (3).

2. The three-layer co-extruded cable intermediate joint according to claim 1 is characterized in that: A fixing groove corresponding to the movement track of the support member (22) is provided on the left side of the first joint (1), and the support member (22) is rotatably connected inside the fixing groove.

3. The three-layer co-extruded cable intermediate joint according to claim 1 is characterized in that: The top of the spring (29) is fixedly connected to the bottom of the rotating plate (25), and the bottom of the spring (29) is fixedly connected to the top of the threaded block (26).

4. The three-layer co-extruded cable intermediate joint according to claim 1 is characterized in that: A sliding groove corresponding to the movement track of the threaded block (26) is provided at the top of the first joint (1), and the threaded block (26) is slidably connected inside the sliding groove.

5. The three-layer co-extruded cable intermediate joint according to claim 1 is characterized in that: The right side of the rotating plate (25) is an inclined surface, the left side of the inserting plate (27) is an inclined surface, and the right side of the rotating plate (25) and the left side of the inserting plate (27) are in contact with each other.

6. The three-layer co-extruded cable intermediate joint according to claim 1, characterized in that: The first joint (1) comprises a wear-resistant layer (6), the bottom of the wear-resistant layer (6) is fixedly connected to an insulating layer (5), and the bottom of the insulating layer (5) is fixedly connected to a fireproof layer (4).

7. The three-layer co-extruded cable intermediate joint according to claim 6, characterized in that: The wear-resistant layer (6) is the outermost layer, and the material used for the wear-resistant layer (6) is polyetheretherketone; the insulating layer (5) is the middle layer, and the material used for the insulating layer (5) is polyetherimide; the fireproof layer (4) is the innermost layer, and the material used for the fireproof layer (4) is graphite.

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