Cross-linked polyethylene insulated power cable intermediate joint forming device

Abstract

The utility model relates to the technical field of cable joints, and discloses a cross-linked polyethylene insulated power cable intermediate joint forming device which comprises a bottom plate, a supporting rod is fixedly connected to the middle of the upper end of the bottom plate, a first template is fixedly connected to the top end of the supporting rod, and a first rotating shaft is rotationally connected to the left end of the first template. A second template is rotatably connected to the upper side of the right end of the first rotating shaft, an upper fastener is fixedly connected to the right end of the second template, a lower buckle is fixedly connected to the right end of the first template, a pin shaft is connected to the upper end of the lower buckle through a linkage assembly, and extrusion blocks are connected to the two sides of the upper end of the bottom plate through rotating assemblies; and the inner wall of the extrusion block is fixedly connected with a sliding rod. According to the utility model, the lower buckle is matched with the upper fastener, and the pin shaft is clamped, so that the template is quickly fixed, the operation is simplified, the cost is reduced, and the stability is ensured; meanwhile, the two ends of the cable are fixed in the grooves, clamping is driven through bevel gear transmission, movement is prevented, and the forming precision is ensured.

Description

Technical Field

[0001] This utility model relates to the field of cable joint technology, and in particular to a forming device for intermediate joints of cross-linked polyethylene insulated power cables. Background Technology

[0002] With the development of power systems, cross-linked polyethylene (XLPE) insulated power cables are widely used in high-voltage and high-power transmission fields due to their excellent electrical and mechanical properties. In cable laying and maintenance, the fabrication of intermediate joints is a crucial step, as its quality directly affects the reliability of cable connections and the stability of the power system. Therefore, developing an efficient and reliable intermediate joint forming device is of great significance.

[0003] However, existing intermediate joint forming devices have some technical problems in practical applications. For example, traditional template fixing methods typically use bolts or clips, which are cumbersome to operate and require multiple adjustments and calibrations, resulting in low work efficiency. Furthermore, cables are prone to movement during the forming process, causing positional shifts that affect the forming quality and long-term reliability of the joint. These problems make it difficult for existing technologies to meet the demands of high-efficiency, high-quality construction, necessitating a technical solution that simplifies the operation process and improves clamping stability to address these issues. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a cross-linked polyethylene insulated power cable intermediate joint forming device. The device achieves rapid template fixing through the cooperation of the lower ring buckle and the upper fastener and the engagement of the pin shaft, simplifying operation, reducing costs, and ensuring stability. At the same time, the two ends of the cable are fixed in the groove and clamped by bevel gear transmission to prevent movement and ensure forming accuracy.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a cross-linked polyethylene insulated power cable intermediate joint forming device, comprising a base plate, a support rod fixedly connected to the middle of the upper end of the base plate, a first template fixedly connected to the top of the support rod, a second template rotatably connected to the upper end of the first template, an upper fastener fixedly connected to the right end of the second template, a lower ring fastener fixedly connected to the right end of the first template, a pin connected to the upper end of the lower ring fastener via a linkage assembly, fixed plates fixedly connected to both sides of the upper end of the base plate, a rotating plate rotatably connected to the upper end of the fixed plates, a sliding rod fixedly connected to the inner wall of the rotating plate, an extrusion plate slidably connected to the outer wall of the sliding rod, a connecting rod connected to the upper end of the extrusion plate via an engagement assembly, a support plate rotatably connected to the middle end of the connecting rod, and a handle fixedly connected to the right end of the connecting rod.

[0006] Furthermore, the linkage component includes a movable rod sleeved on the inner wall of the lower buckle, a limit block fixedly connected to the lower end of the movable rod, a rotating rod rotatably connected to the top end of the movable rod, and the upper end of the pin rotatably connected to the middle end of the outer wall of the rotating rod.

[0007] Furthermore, the meshing assembly includes a threaded rod fixedly connected to the upper end of the extrusion plate, a first bevel gear being threadedly connected to the outer wall of the threaded rod, a second bevel gear being meshed with the right end of the first bevel gear, and the right end of the second bevel gear being fixedly connected to the left end of the connecting rod.

[0008] Furthermore, a fixed block is rotatably connected to the lower end of the first bevel gear, and the lower end of the fixed block is fixedly connected to the top of the rotating plate. The outer wall of the threaded rod is slidably connected to the inner wall of the rotating rod.

[0009] Furthermore, the upper end of the upper fastener is provided with a slot, and the lower end of the pin is slidably connected to the inner wall of the slot.

[0010] Furthermore, a feed funnel is fixedly connected to the top of the second template.

[0011] Furthermore, the bottom end of the support plate is fixedly connected to the top end of the rotating plate.

[0012] This utility model has the following beneficial effects:

[0013] 1. In this utility model, the first and second templates are quickly and securely connected through the cooperation of the lower ring buckle and the upper fastener, combined with the pin engagement method. This design not only simplifies the operation process and improves work efficiency, but also avoids the cumbersome adjustment and calibration steps in traditional fixing methods. Through modular design, operators can complete the template fixing by following simple steps, significantly reducing labor costs while ensuring the stability and reliability of the device.

[0014] 2. In this invention, the cable's position is ensured by fixing both ends to pre-reserved grooves in the fixing plate and using a rotating block connected to a snap-fit ​​mechanism. Subsequently, a bevel gear transmission and a threaded rod drive the extrusion plate to achieve precise clamping of the cable. This fixing method not only effectively prevents the cable from moving during the joint forming process and avoids positional deviation, but also ensures high precision and stability in joint forming, while improving production efficiency and product quality. Attached Figure Description

[0015] Figure 1 This is a perspective view of a cross-linked polyethylene insulated power cable intermediate joint forming device proposed in this utility model;

[0016] Figure 2 This is an open view of the first and second templates of the cross-linked polyethylene insulated power cable intermediate joint forming device proposed in this utility model;

[0017] Figure 3 This utility model provides a structural diagram of the upper fastener and lower ring fastener of a cross-linked polyethylene insulated power cable intermediate joint forming device.

[0018] Figure 4 This invention relates to a structural diagram of the rotating component of a cross-linked polyethylene insulated power cable intermediate joint forming device.

[0019] Legend:

[0020] 1. Base plate; 2. Support rod; 3. First template; 4. Second template; 5. Feed hopper; 6. Moving rod; 7. Lower ring buckle; 8. Limiting block; 9. Rotating rod; 10. Pin shaft; 11. Upper fastener; 12. Slot; 13. Fixing plate; 14. Rotating plate; 15. Sliding rod; 16. Extrusion plate; 17. Threaded rod; 18. Fixing block; 19. First bevel gear; 20. Second bevel gear; 21. Connecting rod; 22. Support plate; 23. Handle. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Reference Figures 1-3 This utility model provides an embodiment of a cross-linked polyethylene insulated power cable intermediate joint forming device, comprising a base plate 1, characterized in that: a support rod 2 is fixedly connected to the middle of the upper end of the base plate 1, a first template 3 is fixedly connected to the top of the support rod 2, a second template 4 is rotatably connected to the upper end of the first template 3, a feeding funnel 5 is fixedly connected to the top of the second template 4, an upper fastener 11 is fixedly connected to the right end of the second template 4, a lower ring fastener 7 is fixedly connected to the right end of the first template 3, a movable rod 6 is sleeved on the inner wall of the lower ring fastener, a limit block 8 is fixedly connected to the lower end of the movable rod 6, a rotating rod 9 is rotatably connected to the top of the movable rod 6, a pin 10 is rotatably connected to the middle of the outer wall of the rotating rod 9, a slot 12 is opened at the upper end of the upper fastener 11, and the lower end of the pin 10 is slidably connected to the inner wall of the slot 12.

[0023] Specifically, the intermediate joint of the cross-linked polyethylene insulated power cable is placed in the first template 3. Then, using the rotation of the shaft, the second template 4 is rotated until it is tightly closed with the first template 3. Because the pre-drilled hole in the lower ring buckle 7 is relatively large, the moving rod 6 can be rotated outwards at a certain angle to prepare for subsequent fixing. When the upper fastener 11 is fully engaged with the upper end of the lower ring buckle 7, the moving rod 6 is lifted upwards and rotated, placing the rotating rod 9 at the upper end of the upper fastener 11. In this state, based on the lever principle, the left end of the rotating rod 9 is lifted upwards. The rotating rod 9, under force, will drive the moving rod 6 upwards, and the limiting block 8 at the bottom of the moving rod 6 will then tightly adhere to the lower ring buckle 7. Subsequently, the pin 10 is accurately engaged in the slot 12. In this way, the upper fastener 11 and the lower ring buckle 7 are firmly fixed, and the first template 3 and the second template 4 achieve a quick and stable fixed connection. After the template is fixed, the molten cross-linked polyethylene raw material is slowly injected into the internal space formed by the first template 3 and the second template 4 through the feed funnel 5. After the raw material is fully filled and cooled and solidified, the fixing of the intermediate joint of the cross-linked polyethylene insulated power cable is completed.

[0024] Reference Figure 1 and Figure 4 A fixed plate 13 is fixedly connected to both sides of the upper end of the base plate 1. A rotating plate 14 is rotatably connected to the upper end of the fixed plate 13. A sliding rod 15 is fixedly connected to the inner wall of the rotating plate 14. An extrusion plate 16 is slidably connected to the outer wall of the sliding rod 15. A threaded rod 17 is fixedly connected to the upper end of the extrusion plate 16. A first bevel gear 19 is threadedly connected to the outer wall of the threaded rod 17. A second bevel gear 20 is meshed with the right end of the first bevel gear 19. The right end of the second bevel gear 20 is fixedly connected to the left end of the connecting rod 21. A support plate 22 is rotatably connected to the middle end of the connecting rod 21. A handle 23 is fixedly connected to the right end of the connecting rod 21. A fixed block 18 is rotatably connected to the lower end of the first bevel gear 19. The lower end of the fixed block 18 is fixedly connected to the top end of the rotating plate 14. The outer wall of the threaded rod 17 is slidably connected to the inner wall of the rotating rod 9. The bottom end of the support plate 22 is fixedly connected to the top end of the rotating plate 14.

[0025] Specifically, during operation, to prevent cable movement and resulting positional deviation, both ends of the cable can be placed into the grooves reserved in the fixing plate 13. Then, the rotating block is rotated, connecting the right end of the rotating plate 14 to the right side of the fixing plate 13 via a clip. Finally, the handle 23 is rotated, driving the second bevel gear 20 through the connecting rod 21, which in turn engages the first bevel gear 19. Utilizing the threaded transmission principle, the threaded rod 17 moves downward, pushing the extrusion plate 16 to securely clamp the cable. This fixing method effectively prevents cable movement during joint forming, thus avoiding positional deviation caused by cable movement and ensuring the accuracy of joint forming.

[0026] Working Principle: When using this device, firstly, place the cross-linked polyethylene insulated power cable intermediate joint inside the first template 3. Then, rotate the second template 4 via the rotating shaft to close the first template 3 and the second template 4. Because the hole in the middle of the lower ring buckle 7 is relatively large, the moving rod 6 can be rotated outwards. When the upper fastener 11 is attached to the upper end of the lower ring buckle 7, lift the moving rod 6 upwards and rotate it back, so that the rotating rod 9 is placed above the upper fastener 11. At this time, through the lever principle, lift the left end of the rotating rod 9 upwards. The rotating rod 9 drives the moving rod 6 upwards, and the fixing block 18 at the bottom of the moving rod 6 is tightly attached to the lower ring buckle 7. Then, the pin 10 is engaged in the slot 12, thereby completing the fixation of the upper fastener 11 and the lower ring buckle 7, achieving a quick and secure connection between the first template 3 and the second template 4. Next, inject the melted cross-linked polyethylene raw material into the first template 3 and the second template 4 through the feeding funnel 5 to complete the fixation of the cross-linked polyethylene insulated power cable intermediate joint. During use, to prevent the cable from shifting and causing positional deviation, both ends of the cable can be placed in the pre-set grooves of the fixing plate 13. Then, rotate the rotating block to gradually press the pressing plate 16 onto the upper end of the cable. Next, fix the right end of the rotating plate 14 to the right end of the fixing plate 13 using a buckle. Then, rotate the handle 23, which drives the connecting rod 21 to rotate. The second bevel gear 20 rotates accordingly, driving the first bevel gear 19. Under the action of the threaded connection, the threaded rod 17 moves downward, thereby pushing the pressing plate 16 to fix and clamp the cable.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cross-linked polyethylene insulated power cable intermediate joint forming device, comprising a base plate (1), characterized in that: A support rod (2) is fixedly connected to the middle of the upper end of the base plate (1). A first template (3) is fixedly connected to the top of the support rod (2). A second template (4) is rotatably connected to the upper end of the first template (3). An upper fastener (11) is fixedly connected to the right end of the second template (4). A lower ring buckle (7) is fixedly connected to the right end of the first template (3). A pin (10) is connected to the upper end of the lower ring buckle (7) through a linkage assembly. Fixed plates (13) are fixedly connected to both sides of the upper end of the base plate (1). A rotating plate (14) is rotatably connected to the upper end of the fixed plate (13). A sliding rod (15) is fixedly connected to the inner wall of the rotating plate (14). A pressing plate (16) is slidably connected to the outer wall of the sliding rod (15). A connecting rod (21) is connected to the upper end of the pressing plate (16) through a meshing assembly. A support plate (22) is rotatably connected to the middle end of the connecting rod (21). A handle (23) is fixedly connected to the right end of the connecting rod (21).

2. The cross-linked polyethylene insulated power cable intermediate joint forming device according to claim 1, characterized in that: The linkage component includes a movable rod (6) sleeved on the inner wall of the lower buckle ring, a limit block (8) fixedly connected to the lower end of the movable rod (6), a rotating rod (9) rotatably connected to the top end of the movable rod (6), and the upper end of the pin (10) rotatably connected to the middle end of the outer wall of the rotating rod (9).

3. The cross-linked polyethylene insulated power cable intermediate joint forming device according to claim 1, characterized in that: The meshing assembly includes a threaded rod (17) fixedly connected to the upper end of the extrusion plate (16). The outer wall of the threaded rod (17) is threaded with a first bevel gear (19). The right end of the first bevel gear (19) is meshed with a second bevel gear (20). The right end of the second bevel gear (20) is fixedly connected to the left end of the connecting rod (21).

4. The cross-linked polyethylene insulated power cable intermediate joint forming device according to claim 3, characterized in that: The lower end of the first bevel gear (19) is rotatably connected to a fixed block (18), the lower end of the fixed block (18) is fixedly connected to the top of the rotating plate (14), and the outer wall of the threaded rod (17) is slidably connected to the inner wall of the rotating rod (9).

5. The cross-linked polyethylene insulated power cable intermediate joint forming device according to claim 1, characterized in that: The upper end of the upper fastener (11) is provided with a slot (12), and the lower end of the pin (10) is slidably connected to the inner wall of the slot (12).

6. The cross-linked polyethylene insulated power cable intermediate joint forming device according to claim 1, characterized in that: The second template (4) has a feed funnel (5) fixedly connected to its top.

7. The cross-linked polyethylene insulated power cable intermediate joint forming device according to claim 1, characterized in that: The bottom end of the support plate (22) is fixedly connected to the top end of the rotating plate (14).

Images