Cable terminal joint positioning clamp

Abstract

The utility model belongs to the technical field of railway power equipment installation, and particularly relates to a cable terminal joint positioning clamp which comprises an upper support and a lower support which are distributed up and down and are concentric, the upper support and the lower support are both arranged to be annular, and one side of each of the upper support and the lower support is provided with a notch for a cable to go in and out. A holding clamp used for clamping a cable is arranged in the upper support, a lifting assembly used for adjusting the height of the upper support is arranged between the upper support and the lower support, and the holding clamp is arranged to be capable of rotating with the circle center of the upper support as the center and used for adjusting the orientation of a battery cell. According to the utility model, the cable can be temporarily fixed and adjusted in the connection process of the terminal of the power cable and the high-voltage switch cabinet, the operation difficulty of connecting the cable with the switch cabinet is reduced, and the operation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of railway power equipment installation technology; specifically, this utility model relates to a cable terminal joint positioning clamp. Background Technology

[0002] With the rapid development of railway operations towards higher speeds and greater density, the requirements for the reliability of railway power systems are becoming increasingly stringent. The railway power supply system mainly consists of a power supply network composed of substations along the line, through power lines, low-voltage distribution lines, and power equipment and facilities. It is responsible for supplying power for the entire railway's production, transportation, and daily life maintenance, providing reliable power for dispatching, communication signals, passenger services, and other operations. Railway power systems generally use copper-core cross-linked polyethylene insulated polyethylene sheathed steel tape armored power cables YJY23-8.7 / 15kV-3*70 and YJY23-8.7 / 15kV-3*120, with an outer diameter of 12~15cm.

[0003] High-voltage switchgear is a key piece of equipment in railway power supply systems, used for power control, monitoring, and metering of railway electricity. (See attached image) Figure 1 As shown, after entering the underground electrical shaft, the high-voltage cable exits through a pre-drilled hole and then enters the high-voltage switchgear on the surface. The cable terminal connects to the terminals inside the switchgear. The three-phase cores of the cable are connected to the three-phase terminals inside the switchgear. During the connection process, on the one hand, the cable needs to be pulled upwards. The copper core cable has a large outer diameter, heavy weight, and high stress, and the space inside the switchgear is narrow, making it difficult to exert force. On the other hand, the phase sequence of the three-phase cores of the cable must be connected sequentially to the three-phase terminals inside the switchgear. To avoid twisting or tangling of each phase core, the entire cable needs to be twisted so that the direction of the three-phase cores corresponds one-to-one with the three-phase terminals inside the high-voltage switchgear, which further increases the construction difficulty. Utility Model Content

[0004] In view of this, the present invention provides a cable terminal joint positioning clamp, thereby solving or at least alleviating the problem in the prior art that it is difficult to temporarily fix the cable and adjust the angle of the cable during the connection of the power cable terminal to the high-voltage switchgear.

[0005] To achieve the aforementioned objectives, this utility model provides a cable terminal joint positioning clamp, comprising an upper support and a lower support arranged concentrically. Both the upper and lower supports are annular and have a notch on one side for cable entry and exit. The upper support has a clamp for holding the cable inside. A lifting component for adjusting the height of the upper support is provided between the upper and lower supports. The clamp is configured to rotate around the center of the upper support to adjust the orientation of the cable core.

[0006] In the cable terminal joint positioning clamp described above, optionally, an arc-shaped slide is rotatably installed inside the upper bracket, and the clamp includes two clamping plates and an adjusting bolt rotatably connected to the outside of the clamping plates. The two clamping plates are symmetrically distributed on both sides of the arc-shaped slide, and the adjusting bolt is threadedly engaged with the arc-shaped slide.

[0007] In the cable terminal joint positioning fixture described above, optionally, both the upper and lower ends of the arc-shaped slide extend from the upper bracket, and a handle for controlling the rotation of the arc-shaped slide is fixedly connected to the top of the side surface of the arc-shaped slide.

[0008] In the cable terminal joint positioning fixture described above, optionally, the inner surface of the upper bracket is provided with an arc-shaped groove, and the outer side of the arc-shaped slide block is provided with an arc-shaped slider that slides in cooperation with the arc-shaped groove.

[0009] In the cable terminal joint positioning clamp described above, optionally, the lower support includes a ring portion and a plurality of legs equidistantly arranged at the bottom of the ring portion, and the inner diameter of the ring portion is larger than the outer diameter of the upper support.

[0010] In the cable terminal joint positioning clamp described above, optionally, the lifting assembly includes a sleeve fixedly installed on the lower support, a lifting column inserted into the top of the sleeve, two rows of ratchet grooves respectively arranged on both sides of the lifting column, and ratchet blocks located on both sides of the lifting column and adapted to the ratchet grooves to support the lifting column. The top of the lifting column is fixedly connected to the upper support, the bottom end of the ratchet block located on the inner side is rotatably connected to the side wall of the sleeve, and the bottom end of the ratchet block located on the outer side is rotatably connected to an operating rod. The operating rod is rotatably installed on the side wall of the sleeve, and a spring is provided between the operating rod and the ratchet block located on the outer side.

[0011] In the cable terminal joint positioning fixture described above, optionally, when the ratchet block supports the lifting column, its top end is tilted towards one side of the lifting column, and the distance between the ratchet block and the ratchet groove is less than the length of the ratchet block. A lifting rod is fixedly provided on the ratchet block, and the top end of the ratchet block can be rotated out of the ratchet groove by pressing the lifting rod.

[0012] This utility model provides a cable terminal positioning clamp with a lower bracket that stably supports the entire clamp. The clamp can tightly hold the cable and rotate freely on the upper bracket to twist the cable and adjust the orientation of the three cores. The lifting component can lift the upper bracket, causing the clamp to pull the cable upward and move the cable cores closer to the terminal block of the switchgear. By rotating on the upper bracket, the clamp can adjust the orientation of the cores when twisting the cable, thus facilitating the connection between the cable and the switchgear. This significantly reduces the labor intensity of installation workers and makes the connection between the cable terminal and the switchgear more standardized. Attached Figure Description

[0013] The disclosure of this utility model will become more apparent with reference to the accompanying drawings. It should be understood that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings:

[0014] Figure 1 This is a schematic diagram of the cable terminal joint positioning clamp of this utility model when applied to a cable connection switch cabinet;

[0015] Figure 2 This is a schematic diagram of the overall structure of the cable terminal joint positioning clamp of this utility model;

[0016] Figure 3 This is another perspective view of the cable terminal joint positioning clamp of this utility model;

[0017] Figure 4 This is a partial cross-sectional view of the cable terminal joint positioning clamp of this utility model.

[0018] Reference numerals: 1-Upper bracket; 2-Lower bracket; 2.1-Ring body; 2.2-Outrigger; 3-Notch; 4-Clamp; 4.1-Clamping plate; 4.2-Adjusting bolt; 5-Lifting assembly; 5.1-Sleeve; 5.2-Lifting column; 5.3-Ratchet groove; 5.4-Ratchet block; 5.5-Operating lever; 5.6-Spring; 5.7-Lifting rod; 6-Arc-shaped slide; 7-Handle; 8-Arc-shaped groove; 9-Arc-shaped slider. Detailed Implementation

[0019] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] like Figures 1 to 4 As shown, this utility model provides a cable terminal joint positioning clamp, including an upper support 1 and a lower support 2 distributed vertically and concentrically. Both the upper support 1 and the lower support 2 are arranged in a ring shape and each has a notch 3 on one side for cable entry and exit. The upper support 1 is provided with a clamp 4 for holding the cable. A lifting component 5 for adjusting the height of the upper support 1 is provided between the upper support 1 and the lower support 2. The clamp 4 is configured to rotate around the center of the upper support 1 to adjust the orientation of the battery core.

[0021] During use, the cable termination positioning clamp is first placed inside the switchgear, so that the lower bracket 2 is supported on the inner wall of the switchgear. Then, the cable to be connected is inserted into the upper bracket 1 and the lower bracket 2 through the notch 3. The clamp 4 is then operated to hold and fix the cable. Afterwards, the orientation of the cable core is adjusted by the circular motion of the clamp 4 on the upper bracket 1, and the height of the cable termination is adjusted in conjunction with the lifting component 5 to achieve the connection between the cable and the switchgear. After applying this embodiment, the orientation of the cable core and the height of the cable can be effectively controlled when connecting the cable to the switchgear, making the cable connection to the switchgear operation more convenient and standardized.

[0022] The upper bracket 1 has an arc-shaped slide 6 rotatably installed inside it. The clamp 4 includes two clamping plates 4.1 and an adjusting bolt 4.2 rotatably connected to the outside of the clamping plates 4.1. The two clamping plates 4.1 are symmetrically distributed on both sides of the arc-shaped slide 6, and the adjusting bolt 4.2 is threadedly engaged with the arc-shaped slide 6.

[0023] Specifically, by rotating the adjusting bolt 4.2, the clamping plate 4.1 can clamp and fix the cable or loosen the cable. When the clamping plate 4.1 clamps and fixes the cable, the orientation of the battery core can be adjusted by rotating the arc-shaped slide 6 on the upper bracket 1, so as to facilitate the connection of the cable to the switch cabinet.

[0024] Both the upper and lower ends of the arc-shaped slide 6 extend from the upper bracket 1, and a handle 7 for controlling the rotation of the arc-shaped slide 6 is fixedly connected to the top of the side surface of the arc-shaped slide 6. When adjusting the orientation of the battery cell, the worker can directly hold the handle 7, and the lever arm provided by the handle 7 makes it easier to rotate the arc-shaped slide 6.

[0025] More specifically, the inner surface of the upper support 1 is provided with an arc-shaped groove 8, and the outer side of the arc-shaped slide block 6 is provided with an arc-shaped slider 9 that slides in cooperation with the arc-shaped groove 8.

[0026] In this embodiment, the lower support 2 includes a ring portion 2.1 and a plurality of legs 2.2 equidistantly arranged at the bottom of the ring portion 2.1, and the inner diameter of the ring portion 2.1 is larger than the outer diameter of the upper support 1. This arrangement enables the cable terminal positioning clamp to stably support the cable.

[0027] In this embodiment, the lifting assembly 5 includes a sleeve 5.1 fixedly installed on the lower bracket 2, a lifting column 5.2 inserted into the top of the sleeve 5.1, two rows of ratchet grooves 5.3 respectively arranged on both sides of the lifting column 5.2, and ratchet blocks 5.4 located on both sides of the lifting column 5.2 and adapted to the ratchet grooves 5.3 to support the lifting column 5.2. The top of the lifting column 5.2 is fixedly connected to the upper bracket 1. The bottom end of the ratchet block 5.4 located on the inner side is rotatably connected to the side wall of the sleeve 5.1, and the bottom end of the ratchet block 5.4 located on the outer side is rotatably connected to an operating rod 5.5. The operating rod 5.5 is rotatably installed on the side wall of the sleeve 5.1, and a spring 5.6 is provided between the operating rod 5.5 and the ratchet block 5.4 located on the outer side.

[0028] Specifically, both the sleeve 5.1 and the lifting column 5.2 are square tubular structures, and the ratchet groove 5.3 is designed with a flat top wall. When the ratchet block 5.4 is inserted into the ratchet groove 5.3, its top surface contacts the top wall of the groove to support the lifting column 5.2. The outer ratchet block 5.4 is located between the operating lever 5.5 and the lifting column 5.2 in the inward and outward directions. The elastic force of the spring 5.6 ensures that the outer ratchet block 5.4 is stably inserted into the ratchet groove 5.3. The height of the rotatable connection between the operating lever 5.5 and the sleeve 5.1 is greater than the height of the bottom end of the outer ratchet block 5.4.

[0029] When the top of the operating lever 5.5 is pushed inward, the bottom of the operating lever 5.5 causes the outer ratchet block 5.4 to rotate downward. At this time, the inner side of the outer ratchet block 5.4, supported by the bottom of the ratchet groove 5.3, will rotate outward on the operating lever 5.5 to disengage from the ratchet groove 5.3, thus causing the outer ratchet block 5.4 to move to the outside of the lower ratchet groove 5.3. When the top of the operating lever 5.5 is pulled outward, the bottom of the operating lever 5.5 will rotate upward. At this time, the outer ratchet block 5.4, under the action of the spring 5.6, will rotate inward and insert into the ratchet groove 5.3. As the operating lever 5.5 is pulled outward further, the outer ratchet block 5.4 can push the lifting column 5.2 upward, thereby raising the cable.

[0030] During the ascent of the lifting column 5.2, the ratchet block 5.4 located on the inner side is subjected to force and swings inward to disengage from the ratchet groove 5.3. Under its own weight, it can automatically insert into the next ratchet groove 5.3, thereby achieving timely locking of the lifting seat.

[0031] Furthermore, when the ratchet block 5.4 supports the lifting column 5.2, its top end is tilted towards the lifting column 5.2. The distance between the ratchet block 5.4 and the ratchet groove 5.3 is less than the length of the ratchet block 5.4. A lifting rod 5.7 is fixedly installed on the ratchet block 5.4. By pressing the lifting rod 5.7, the top end of the ratchet block 5.4 can be rotated out of the ratchet groove 5.3. At this time, by rotating the top end of the ratchet block 5.4 out of the ratchet groove 5.3 by the lifting rod 5.7, the height of the clamp 4 can be reduced.

[0032] The technical scope of this utility model is not limited to the contents of the above description. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the scope of this utility model.

Claims

1. A cable termination joint positioning clamp, characterized in that, The device includes an upper support (1) and a lower support (2) that are distributed vertically and concentrically. Both the upper support (1) and the lower support (2) are arranged in a ring shape and have a notch (3) on one side for cable entry and exit. The upper support (1) is provided with a clamp (4) for holding the cable. A lifting component (5) for adjusting the height of the upper support (1) is provided between the upper support (1) and the lower support (2). The clamp (4) is configured to rotate around the center of the upper support (1) to adjust the orientation of the battery cell.

2. The cable termination joint positioning clamp according to claim 1, characterized in that, An arc-shaped slide (6) is rotatably installed inside the upper bracket (1). The clamp (4) includes two clamping plates (4.1) and an adjusting bolt (4.2) rotatably connected to the outside of the clamping plates (4.1). The two clamping plates (4.1) are symmetrically distributed on both sides of the arc-shaped slide (6). The adjusting bolt (4.2) is threadedly engaged with the arc-shaped slide (6).

3. A cable terminal joint positioning clamp according to claim 2, characterized in that, Both the upper and lower ends of the arc-shaped slide (6) extend from the upper bracket (1), and a handle (7) for controlling the rotation of the arc-shaped slide (6) is fixed to the top of the side surface of the arc-shaped slide (6).

4. A cable terminal joint positioning clamp according to claim 2, characterized in that, The inner surface of the upper support (1) is provided with an arc-shaped groove (8), and the outer side of the arc-shaped slide block (6) is provided with an arc-shaped slider (9) that slides in cooperation with the arc-shaped groove (8).

5. A cable termination joint positioning clamp according to claim 1, characterized in that, The lower support (2) includes a ring part (2.1) and a plurality of legs (2.2) equidistantly arranged at the bottom of the ring part (2.1), and the inner diameter of the ring part (2.1) is larger than the outer diameter of the upper support (1).

6. A cable termination joint positioning clamp according to claim 1, characterized in that, The lifting assembly (5) includes a sleeve (5.1) fixedly installed on the lower bracket (2), a lifting column (5.2) inserted into the top of the sleeve (5.1), two rows of ratchet grooves (5.3) respectively arranged on both sides of the lifting column (5.2), and ratchet blocks (5.4) located on both sides of the lifting column (5.2) and adapted to the ratchet grooves (5.3) to support the lifting column (5.2). The top of the lifting column (5.2) is fixedly connected to the upper bracket (1). The bottom end of the ratchet block (5.4) located on the inner side is rotatably connected to the side wall of the sleeve (5.1). The bottom end of the ratchet block (5.4) located on the outer side is rotatably connected to an operating rod (5.5). The operating rod (5.5) is rotatably installed on the side wall of the sleeve (5.1), and a spring (5.6) is provided between the operating rod (5.5) and the ratchet block (5.4) located on the outer side.

7. A cable termination joint positioning clamp according to claim 6, characterized in that, When the ratchet block (5.4) supports the lifting column (5.2), its top end is tilted towards the lifting column (5.2). The distance between the ratchet block (5.4) and the ratchet groove (5.3) is less than the length of the ratchet block (5.4). A lifting rod (5.7) is fixedly installed on the ratchet block (5.4). By pressing the lifting rod (5.7), the top end of the ratchet block (5.4) can be rotated out of the ratchet groove (5.3).

Images