Expansion device for cold shrink cable accessory

Abstract

The utility model discloses a cold shrink cable accessory expansion device, and specifically relates to the cable accessory field, the cold shrink cable accessory expansion device comprises a pedestal, the pedestal is provided with four spacing through grooves, each spacing through groove is internally provided with a slide block in a sliding manner, one end of the slide block is fixedly provided with an extension plate, and the extension plate is provided with a plurality of through holes; and a supporting rod is fixedly arranged at one end of the extension plate, an expansion plate is fixedly arranged at the end, away from the extension plate, of the supporting rod, the upper ends of the sliding blocks are connected with a winding roller through pull ropes, and the middle position of one end of the winding roller is fixedly arranged on an output shaft of a driving motor. The driving motor is used for driving the winding roller to rotate, when the winding roller rotates, the four sliding blocks can be pulled to move through the pull rope, the sliding blocks can drive the expansion plates to move outwards, the cable accessory can be expanded outwards through the expansion plates, the expansion force is monitored through the pressure sensor during expansion, and the situation that the expansion force is too large can be prevented; and the cable accessory is torn.

Description

Technical Field

[0001] The utility model relates to the technical field of cable accessory expansion, in particular to a cold shrink cable accessory expansion device. Background Art

[0002] Power cable accessories are products that connect cables to power transmission and distribution lines and related distribution devices. They generally refer to the intermediate connections and terminal connections of various cables in cable lines. Together with cables, they constitute a power transmission network. Cable accessories are mainly based on the characteristics of cable structure. They can not only restore the performance of cables, but also ensure the extension of cable length and terminal connection. The reliability of high-voltage cable accessories can be judged from aspects such as electrical performance, sealing and moisture-proof performance, mechanical performance and process performance. With the continuous development of society, the application of cable accessories is increasing, and some cable accessories expansion devices are beginning to appear.

[0003] For example, the Chinese patent authorization announcement number is: CN 213793746 U, which discloses a cable accessory expansion device, including a fixed frame, a slider is slidably connected to the left end of the fixed frame, a motor is sleeved on the inner side of the slider, a fixed block is fixedly connected to the end of the main shaft of the right end of the motor, an expansion head is slidably connected to the outer side of the fixed block, a support plate is slidably connected to the inner side of the fixed block, a first spring is fixedly connected to the bottom end of the support plate, and the other end of the first spring is fixedly connected to the fixed block, and the top right side of the fixed frame is fixedly connected to the support frame. In the utility model, through the provision of a threaded shaft, an expansion head, a fan and a limit block, this provision cooperates with the traction of wind by the fan, the heating of wind by the electric heating tube, the elastic force of the second spring on the support block, the fixed connection of the support block and the limit block, and the drive of the expansion head and the threaded shaft by the motor. When using the device, the accessories can be quickly expanded, the operation is simple and convenient, and the expansion effect is good.

[0004] However, the above patent has some problems during use. For example, when the cable needs to be expanded to different sizes, different expansion heads need to be replaced, which is troublesome to operate and inconvenient for people to use. Utility Model Content

[0005] The utility model aims to provide a cold shrink cable accessory expansion device to solve the problems raised in the above background technology.

[0006] In order to solve the above-mentioned technical problems, the utility model provides the following technical solutions: a cold shrink cable accessory expansion device, comprising a base, wherein four limiting slots are opened on the base, and a sliding block is slidably arranged inside each of the limiting slots, an extension plate is fixedly arranged at one end of the sliding block, a support rod is fixedly arranged at one end of the extension plate, and an expansion plate is fixedly arranged at one end of the support rod away from the extension plate, the upper ends of the sliding blocks are connected to the winding roller through a pull rope, and the middle position of one end of the winding roller is fixedly arranged on the output shaft of the driving motor.

[0007] In a preferred embodiment, a spring is fixedly provided at the bottom end of the sliding block, and one end of the spring away from the sliding block is fixedly provided on the inner wall of the limiting through groove, and the pull rope passes through the outer end side wall of the base and is wound and connected with the winding roller through a guide wheel. The setting of the spring can reset the sliding block, and the setting of the guide wheel facilitates the connection between the pull rope and the winding roller.

[0008] In a preferred embodiment, four winding grooves are opened on the winding roller, each of the pull ropes is wound in a winding groove, and the winding roller is rotatably set on the base at one end away from the driving motor. The four pull ropes are wound by one winding roller, so that the four pull ropes can drive the four sliding blocks to move at the same time.

[0009] In a preferred embodiment, limiting protrusions are fixedly provided at both ends of the sliding block, and limiting sliding grooves matching with the limiting protrusions are provided on the inner side walls of the limiting through grooves. The setting of the limiting protrusions and the limiting sliding grooves facilitates the movement of the sliding block.

[0010] In a preferred embodiment, the guide wheel is installed on the rear edge of the base, the expansion plate is arranged in an arc-shaped structure, and a pressure sensor is embedded on the outer side wall of each expansion plate.

[0011] In a preferred embodiment, a PLC controller is fixedly installed inside the base, and the PLC controller is electrically connected to a pressure sensor and a drive motor. The drive motor is fixedly installed on the rear side of the base through a support. The pressure sensor is used to monitor in real time the pressure of the expansion plate on the cable accessories when expanding, so as to prevent damage to the cable accessories when the expansion pressure is high.

[0012] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0013] The utility model is provided with structures such as a sliding block, an expansion plate, a pull rope, a winding roller, a spring, and a driving motor. The driving motor is used to drive the winding roller to rotate. When the winding roller rotates, the four sliding blocks can be pulled to move by the pull rope. The sliding block can drive the expansion plate to move outward. The expansion plate can be used to expand the cable accessories outward. During expansion, a pressure sensor is used to monitor the expansion force, which can prevent the expansion force from being too large, resulting in the cable accessories being torn. The utility model has a simple structure, can process cable accessories with different expansion sizes, and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 It is a front view structural schematic diagram of the utility model;

[0016] Figure 2 It is a rear view structural schematic diagram of the utility model;

[0017] Figure 3 It is a structural schematic diagram of the expansion plate of the utility model;

[0018] Figure 4 It is a structural schematic diagram of the limiting protrusion and the limiting slide groove of the utility model;

[0019] Figure 5 It is a structural schematic diagram of the winding roller of the utility model.

[0020] In the figure: 1. base; 2. limit slot; 3. sliding block; 4. extension plate; 5. support rod; 6. expansion plate; 7. pull rope; 8. winding roller; 9. driving motor; 10. spring; 11. guide wheel; 12. winding slot; 13. limit protrusion; 14. limit slide slot; 15. pressure sensor. DETAILED DESCRIPTION

[0021] 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.

[0022] See also Figure 1-Figure 5The utility model provides a cold shrink cable accessory expansion device, including a base 1, four limiting through slots 2 are opened on the base 1, a sliding block 3 is slidably arranged inside each of the limiting through slots 2, an extension plate 4 is fixedly arranged at one end of the sliding block 3, a support rod 5 is fixedly arranged at one end of the extension plate 4, an expansion plate 6 is fixedly arranged at one end of the support rod 5 away from the extension plate 4, the upper ends of the sliding blocks 3 are connected to the winding roller 8 through a pull rope 7, and the middle position of one end of the winding roller 8 is fixedly arranged on the output shaft of the driving motor 9.

[0023] In a preferred embodiment, a spring 10 is fixedly provided at the bottom end of the sliding block 3, and one end of the spring 10 away from the sliding block 3 is fixedly provided on the inner wall of the limiting through groove 2. The pull rope 7 passes through the outer side wall of the base 1 and is wound and connected with the winding roller 8 through a guide wheel 11. When the sliding block 3 drives the expansion plate 6 to move outward and needs to be reset, the driving motor 9 rotates in the opposite direction, and the spring 10 can pull the sliding block 3 to reset.

[0024] In a preferred embodiment, four winding grooves 12 are opened on the winding roller 8, and each of the pull ropes 7 is wound in a winding groove 12. The winding roller 8 is rotatably set on the base 1 at one end away from the driving motor 9. The four winding grooves 12 opened on the winding roller 8 correspond to four pull ropes 7, and the winding roller 8 is used to drive the winding of the four pull ropes 7 at the same time.

[0025] In a preferred embodiment, limiting protrusions 13 are fixedly provided at both ends of the sliding block 3, and a limiting sliding groove 14 for matching the limiting protrusions 13 is opened on the inner side wall of the limiting through groove 2. The setting of the limiting protrusions 13 and the limiting sliding grooves 14 makes the movement of the sliding block 3 more stable.

[0026] In a preferred embodiment, the guide wheel 11 is installed on the rear edge of the base 1 , the expansion plate 6 is arranged in an arc-shaped structure, and a pressure sensor 15 is embedded on the outer side wall of each expansion plate 6 .

[0027] In a preferred embodiment, a PLC controller is fixedly installed inside the base 1, and the PLC controller is electrically connected to the pressure sensor 15 and the drive motor 9. The drive motor 9 is fixedly installed on the rear side of the base 1 through a support. The pressure sensor 15 is used to monitor in real time the pressure of the expansion plate 6 when expanding the cable accessories, so as to facilitate the damage of the cable accessories when the expansion pressure is high.

[0028] The working principle of this utility model:

[0029] When the first four expansion plates 6 are used, they are brought close to each other, and the cable accessories that need to be expanded are put on the outside of the four expansion plates 6. When expanding, the drive motor 9 is turned on, and the drive motor 9 drives the winding roller 8 to rotate. When the winding roller 8 rotates, the pull rope 7 can be rolled up, and the pull rope 7 can pull the sliding block 3 to move, so that the four sliding blocks 3 are away from each other, and the sliding block 3 drives the extension plate 4, the support rod 5 and the expansion plate 6 to move, so that the expansion plate 6 expands the cable accessories. During the expansion process, the pressure sensor 15 is used to monitor the expansion force of the cable accessories. When the preset value of the pressure sensor 15 is reached, the pressure sensor 15 transmits the information to the PLC controller, and the PLC controller controls the drive motor 9 to turn off; after the expansion is completed, the cable accessories can be removed, and the drive motor 9 is rotated in the reverse direction, so that the winding roller 8 rotates in the reverse direction, the pull rope 7 is loosened, and the sliding block 3 drives the expansion plate 6 to reset under the action of the tension of the spring 10, so that the subsequent cable accessories can continue to be expanded.

[0030] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cold shrink cable accessory expansion device, comprising a base (1), characterized in that: The base (1) is provided with four limiting slots (2), each of which is slidably provided with a sliding block (3), one end of which is fixedly provided with an extension plate (4), one end of which is fixedly provided with a support rod (5), and one end of which is away from the extension plate (4) is fixedly provided with an expansion plate (6), the upper end of each sliding block (3) is connected to a winding roller (8) via a pull rope (7), and the middle position of one end of the winding roller (8) is fixedly provided on the output shaft of a driving motor (9).

2. A cold shrink cable accessory expansion device according to claim 1, characterized in that: A spring (10) is fixedly arranged at the bottom end of the sliding block (3), and one end of the spring (10) away from the sliding block (3) is fixedly arranged on the inner side wall of the limiting groove (2). The pull rope (7) passes through the outer side wall of the base (1) and is wound and connected with the winding roller (8) through a guide wheel (11).

3. A cold shrink cable accessory expansion device according to claim 2, characterized in that: The winding roller (8) is provided with four winding grooves (12), each of the pull ropes (7) is wound in a winding groove (12), and one end of the winding roller (8) away from the driving motor (9) is rotatably arranged on the base (1).

4. A cold shrink cable accessory expansion device according to claim 1, characterized in that: Limiting protrusions (13) are fixedly provided at both ends of the sliding block (3), and limiting sliding grooves (14) for matching with the limiting protrusions (13) are provided on the inner side wall of the limiting through groove (2).

5. A cold shrink cable accessory expansion device according to claim 2, characterized in that: The guide wheel (11) is installed on the rear edge of the base (1); the expansion plate (6) is arranged in an arc-shaped structure, and a pressure sensor (15) is embedded on the outer side wall of each expansion plate (6).

6. A cold shrink cable accessory expansion device according to claim 5, characterized in that: A PLC controller is fixedly installed inside the base (1), and the PLC controller is electrically connected to a pressure sensor (15) and a drive motor (9), and the drive motor (9) is fixedly installed on the rear side of the base (1) via a support member.

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