Middle and low voltage cable intermediate accessory

Abstract

The utility model discloses a middle accessory for middle and low voltage cables, which relates to the field of cable joint accessories and comprises an upper casing and a lower casing, a plurality of mounting seats are fixed on the upper casing and the lower casing, through holes are arranged on the mounting seats, the mounting seats penetrate through the through holes to fix the upper casing and the lower casing through bolts, and the upper casing and the lower casing are fixed through bolts. The upper shell and the lower shell are provided with matched positioning pieces, the positioning pieces are arranged, the upper shell and the lower shell can be rapidly installed, a specially-assigned person does not need to hold the lower shell with hands and then fix the lower shell with bolts one by one, the installation process is optimized, operation is easier and more convenient, the workload of installation personnel is relieved, the installation efficiency is improved, and the installation cost is reduced. The working efficiency is improved, and the installation process is smoother and more efficient.

Description

Technical Field

[0001] This utility model relates to the field of cable joint accessories, specifically a medium and low voltage cable intermediate accessory. Background Technology

[0002] Medium and low voltage cables generally refer to power cables with rated voltages of 0.6 / 1kV to 35kV. Cable intermediate accessories (also commonly known as cable joints) are core power fittings used to mechanically connect, electrically connect, and restore insulation seals of two or more sections of medium and low voltage power cables of the same specification and type. They are key supporting components for continuous power supply and long-distance cable laying. Their core function is to restore the cable's conductivity, insulation performance, sealing protection performance, and mechanical strength, allowing two separate cable sections to form a complete and reliable transmission line. They are widely used in urban power grid transformation, community power distribution, industrial and mining power supply, municipal infrastructure, and other scenarios. According to the insulation structure and manufacturing process, medium and low voltage cable intermediate accessories are mainly divided into three categories to adapt to different voltage levels and construction environments: heat-shrinkable intermediate joints, cold-shrinkable intermediate joints, and assembled intermediate joints. On-site assembly only requires mechanical assembly, greatly reducing the impact of manual processes on quality.

[0003] Currently, in the installation process of cable prefabricated intermediate joints, the first step is to carry out preliminary treatment of the cable, which is an essential step. After the preliminary treatment of the cable is completed, the protective shells need to be precisely connected in the final stage of all operations. However, when performing this step, it is affected by many factors such as the shape and weight of the protective shells themselves. These factors directly make it almost impossible for a single person to successfully complete the installation task when installing the protective shells. Undoubtedly, this will have a serious negative impact on the work efficiency of cable intermediate joint construction, and may delay the cable joint construction process. Summary of the Invention

[0004] The purpose of this utility model is to provide an intermediate accessory for medium and low voltage cables to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a medium and low voltage cable intermediate accessory, including an upper shell and a lower shell, and several mounting seats are fixed on both the upper shell and the lower shell, and through holes are opened on the mounting seats. Bolts are used to fix the upper shell and the lower shell through the through holes on the mounting seats, and a filling groove is opened on the upper shell. Matching positioning components are provided on the upper shell and the lower shell.

[0006] In an optional implementation,

[0007] The positioning component includes: a mounting plate a fixed on the upper housing, a positioning rod slidably connected to the mounting plate a via a mounting sleeve, and a limiting component adapted to the positioning rod on the mounting sleeve, the limiting component being used to limit the positioning rod; a mounting plate b fixed on the lower housing, the mounting plate b having a channel, the mounting plate b having a groove communicating with the channel, and a positioning block slidably connected within the groove; a spring a fixed between the positioning block and the groove; the positioning rod slidably connected to the inside of the channel, and a pressing push rod fixed at one end of the positioning rod, with a pressing block slidably sleeved on the pressing push rod.

[0008] In an optional implementation,

[0009] The limiting component includes a limiting groove formed on the positioning rod, and a mounting sleeve slidably passes through the limiting rod, wherein the limiting rod is slidably connected to the limiting groove.

[0010] In an optional implementation,

[0011] The positioning rod has a groove, and the length of the bottom surface of the extrusion block is greater than the length of the side of the extrusion push rod closest to the extrusion block.

[0012] In an optional implementation,

[0013] A rubber block is fixed to the end of the positioning rod away from the extrusion push rod, and a pull ring is rotatably connected to one end of the limiting rod.

[0014] In an optional implementation,

[0015] The extrusion block is symmetrically arranged with a wider top and a narrower bottom, and the vertical cross-section of the extrusion push rod is T-shaped. The end of the extrusion push rod away from the extrusion block is symmetrically arranged with a wider bottom and a narrower top. The adjacent side of the positioning block is chamfered.

[0016] In an optional implementation,

[0017] The groove is rectangular in shape with a notch.

[0018] In an optional implementation,

[0019] The two ends of the limiting groove are set in a semi-circular arc shape.

[0020] In an optional implementation,

[0021] The upper and lower shells are each provided with a mounting groove on an adjacent side, and a sealing gasket is fixed in the mounting groove.

[0022] In an optional implementation,

[0023] The upper housing is provided with a top cover, which is located directly above the filling groove. The top cover is fixed to the upper housing with screws, and a sealing ring is fixed on the top cover.

[0024] Compared with the prior art, the beneficial effects of this utility model are:

[0025] When the positioning rod is inserted into the channel, this utility model can play a pre-positioning role between the upper and lower housings. The pre-positioning role is very important, as it can ensure that the upper and lower housings can maintain a matching and precise docking state after the pre-positioning is completed. Moreover, on this basis, the pressing block will abut against the positioning block to achieve a pre-locking operation on the upper and lower housings, so as to prevent the lower and upper housings from falling off after the positioning work is completed.

[0026] This invention, through the setting of positioning components, allows for quick installation of the upper and lower housings. Corresponding bolts can be used to reinforce and fix the upper and lower housings. In this case, there is no need to arrange for additional personnel to hold the lower housing by hand and then use bolts to fix the upper and lower housings one by one. This optimizes the entire installation process. For installation personnel, this operation method is undoubtedly simpler and easier, greatly reducing their workload, improving work efficiency, and making the entire installation process smoother and more efficient. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0028] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0029] Figure 3 This is a side sectional view of the mounting plate of this utility model;

[0030] Figure 4 for Figure 3 Enlarged schematic diagram of the structure of region A in the middle;

[0031] Figure 5 This is a schematic diagram showing the position of the positioning block and the extrusion block in contact with each other in this utility model.

[0032] Figure 6 This is a schematic diagram of the filling groove structure of this utility model;

[0033] Figure 7 This is a schematic diagram of the positioning rod structure of this utility model;

[0034] Figure 8 This is a side sectional view of the upper shell structure of this utility model;

[0035] Figure 9 for Figure 8 Enlarged schematic diagram of the structure of region B in the middle;

[0036] Figure 10 This is a side sectional view of the positioning rod of this utility model.

[0037] In the diagram: 1. Upper housing; 2. Lower housing; 3. Mounting base; 4. Through hole; 5. Bolt; 6. Filler groove; 7. Positioning component; 8. Mounting plate a; 9. Mounting sleeve; 10. Positioning rod; 11. Limiting component; 12. Mounting plate b; 13. Channel; 14. Slide groove; 15. Positioning block; 16. Spring a; 17. Extrusion push rod; 18. Extrusion block; 19. Limiting groove; 20. Limiting rod; 21. Top cover; 22. Mounting groove; 23. Sealing gasket. Detailed Implementation

[0038] 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.

[0039] Example 1: Please refer to Figure 1 - Figure 10 The diagram shows a medium- and low-voltage cable intermediate accessory, including an upper housing 1 and a lower housing 2. Several mounting seats 3 are fixed on both the upper housing 1 and the lower housing 2, and through holes 4 are provided on the mounting seats 3. Bolts 5 are used to fix the upper housing 1 and the lower housing 2 through the through holes 4. A filling groove 6 is provided on the upper housing 1 and the lower housing 2 are provided with matching positioning parts 7. A top cover 21 is provided on the upper housing 1. The top cover 21 is located directly above the filling groove 6 and is fixed to the upper housing 1 by screws. A sealing ring is fixed on the top cover 21.

[0040] In this scheme, the cable is processed according to the standard cable pretreatment process. After the cable pretreatment is completed, the upper shell 1 and the lower shell 2 are merged. The positioning component 7 is used to position the upper shell 1 and the lower shell 2 when they are merged. After the prepositioning of the upper shell 1 and the lower shell 2 is completed, the bolts 5 are used to pass through the through hole 4 to fix the upper shell 1 and the lower shell 2, thus completing the cable outer protection and protection work.

[0041] The upper housing 1 and the lower housing 2 are each provided with a mounting groove 22 on an adjacent side, and a sealing gasket 23 is fixed in the mounting groove 22. The sealing gasket 23 added between the upper housing 1 and the lower housing 2 forms a multi-layer seal, which prevents water vapor and oil stains from seeping in.

[0042] It should be noted that after the workers merge and install the upper shell 1 and the lower shell 2, they fill the interior of the upper shell 1 and the lower shell 2 with sealing material from the filling groove 6 to form a waterproof and oil-proof sealing barrier.

[0043] The positioning component 7 includes: a mounting plate a8 fixed on the upper housing 1, a positioning rod 10 slidably connected to the mounting plate a8 via a mounting sleeve 9, and a limiting component 11 adapted to the positioning rod 10 on the mounting sleeve 9, the limiting component 11 being used to limit the positioning rod 10; a mounting plate b12 fixed on the lower housing 2, and a channel 13 opened on the mounting plate b12, a sliding groove 14 connected to the channel 13 on the mounting plate b12, and a positioning block 15 slidably connected in the sliding groove 14; a spring a16 being fixed between the positioning block 15 and the sliding groove 14; the positioning rod 10 being slidably connected to the inside of the channel 13; a pressing push rod 17 fixed at one end of the positioning rod 10, and a pressing block 18 slidably sleeved on the pressing push rod 17; and a rubber block fixed at the end of the positioning rod 10 away from the pressing push rod 17, the addition of the rubber block facilitating the operation of the positioning rod 10 by pressing or pulling.

[0044] The extrusion block 18 has a symmetrical structure that is wider at the top and narrower at the bottom, and the vertical cross-section of the extrusion push rod 17 is T-shaped. The end of the extrusion push rod 17 away from the extrusion block 18 has a symmetrical structure that is wider at the bottom and narrower at the top. The adjacent side of the positioning block 15 is chamfered. Through the specific shape of the extrusion push rod 17, the positioning block 15 and the extrusion block 18, it is ensured that the extrusion transmission of each component is relatively smooth, effectively avoiding jamming.

[0045] In this scheme, the workers cover the upper shell 1 and the lower shell 2 together. The pressing and transmission action between the inclined surface of the pressing push rod 17 and the inclined surface of the positioning block 15 causes the positioning block 15 to move along the slide groove 14 after being subjected to force. At this time, the spring a16 is under pressure until the sound of the positioning block 15 colliding with the pressing push rod 17 is heard, which completes the pre-installation of the upper shell 1 and the lower shell 2.

[0046] It should be noted that the slide groove 14 is rectangular with a notch. The slide groove 14 and the positioning block 15 are designed to match each other, which not only provides guidance for the positioning block 15, but also provides a limiting function for the positioning block 15, restricting the movement distance of the positioning block 15 and effectively improving the stability of the positioning block 15.

[0047] It should also be noted that, with the setting of positioning component 7, the upper housing 1 and lower housing 2 can be quickly installed by using corresponding bolts 5 to reinforce and fix the upper housing 1 and lower housing 2. In this case, there is no need to arrange for staff to hold the lower housing 2 by hand and then use bolts 5 one after another to fix the upper housing 1 and lower housing 2. This optimizes the entire installation process. For the personnel engaged in installation work, this operation method is undoubtedly simpler and easier, greatly reducing their workload, improving work efficiency, and making the entire installation process smoother and more efficient.

[0048] Example 2: Please refer to Figure 5 - Figure 10 This embodiment further explains the first embodiment, the difference being that the positioning rod 10 is limited, so that the pressing push rod 17 moves to release the positioning of the upper housing 1 and the lower housing 2.

[0049] Specifically, the limiting component 11 includes a limiting groove 19 formed on the positioning rod 10, and the mounting sleeve 9 slides through the limiting rod 20. The limiting rod 20 is slidably connected to the limiting groove 19. The two ends of the limiting groove 19 are set in a semi-circular arc shape. By setting the shape of the two ends of the limiting groove 19, it is possible to prevent the limiting rod 20 from getting stuck with the limiting groove 19.

[0050] It should be noted that when the limiting rod 20 is inserted into the limiting groove 19, it can provide guidance and limiting function for the positioning rod 10, and provide a limiting function for the downward movement of the positioning rod 10.

[0051] The length of the bottom surface of the extrusion block 18 is greater than the length of the side of the extrusion push rod 17 closest to the extrusion block 18. By setting the lengths of the extrusion block 18 and the extrusion push rod 17, it is beneficial for the extrusion block 18 to be extruded and pushed by the positioning block 15. Furthermore, the extrusion block 18 and the positioning block 15 are both set with rounded surfaces at opposite corners, ensuring that when the extrusion block 18 and the positioning block 15 are in diagonal contact, the two positioning blocks 15 can still be pushed apart smoothly, avoiding jamming.

[0052] In this embodiment, when it is necessary to disassemble the upper housing 1 and the lower housing 2, the operator can remove the limiting rod 20 to release the downward movement limit of the positioning rod 10. Then, the positioning rod 10 can be pressed down, which drives the pressing push rod 17 to move. The pressing push rod 17 pushes the pressing block 18 to move downward. The inclined surface of the pressing block 18 presses against the inclined surface of the positioning block 15, converting the downward force into a force that causes the positioning block 15 to retract outward. The positioning block 15 overcomes the elasticity of the spring a16 and retracts into the slide groove 14, thereby disengaging the positioning block 15 from the pressing push rod 17. This allows the pressing push rod 17 and the positioning rod 10 to be pulled upward freely, completing the disassembly of the upper housing 1 and the lower housing 2.

[0053] Meanwhile, the positioning component 7 and the limiting component 11 work together to facilitate the installation and disassembly of the upper housing 1 and the lower housing 2, enabling the disassembly of the upper housing 1 and the lower housing 2 to be completed in a short time.

[0054] It should be noted that in this solution, the upper housing 1 and lower housing 2 are designed for quick assembly and disassembly. This allows the components to be transferred and transported while the upper housing 1 and lower housing 2 are installed during transportation. When protecting the cable, the upper housing 1 and lower housing 2 can be disassembled for immediate use.

[0055] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0056] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A medium-low voltage cable intermediate accessory, characterized in that, The utility model provides a kind of double-shell structure, including upper shell (1) and lower shell (2), and upper shell (1) and lower shell (2) are fixed with several mounting seats (3) on, and mounting seat (3) is equipped with through-hole (4) on, the upper shell (1) and lower shell (2) are fixed using bolt (5) across through-hole (4) on mounting seat (3), and upper shell (1) is equipped with filling slot (6) on, and upper shell (1) and lower shell (2) are equipped with the positioning member (7) of adaptation.

2. A medium or low voltage cable intermediate accessory according to claim 1, characterized in that: The positioning member (7) includes: mounting plate a (8) fixed on the upper shell (1), the positioning rod (10) is slidably connected to the mounting plate a (8) by the mounting sleeve (9), and the limiting piece (11) matched with the positioning rod (10) is arranged on the mounting sleeve (9), the limiting piece (11) is used for limiting the positioning rod (10), the mounting plate b (12) is fixed on the lower shell (2), and the channel (13) is formed in the mounting plate b (12), the sliding slot (14) is formed in the mounting plate b (12) and is communicated with the channel (13), and the positioning block (15) is slidably connected in the sliding slot (14), the spring a (16) is fixed between the positioning block (15) and the sliding slot (14), the positioning rod (10) is slidably connected in the channel (13), and the extrusion push rod (17) is fixed at one end of the positioning rod (10), and the extrusion block (18) is slidably sleeved on the extrusion push rod (17).

3. A medium or low voltage cable intermediate accessory according to claim 2, characterised in that: The limiting piece (11) includes: the limiting groove (19) formed in the positioning rod (10), and the limiting rod (20) is slidably penetrated through the mounting sleeve (9).

4. A medium or low voltage cable intermediate accessory according to claim 2, characterised in that: The length of the bottom surface of the extrusion block (18) is greater than the length of the side of the extrusion push rod (17) close to the extrusion block (18).

5. A medium or low voltage cable intermediate accessory according to claim 2, characterised in that: The rubber block is fixed at the end of the positioning rod (10) away from the extrusion push rod (17).

6. A medium or low voltage cable intermediate accessory according to claim 2, characterised in that: The extrusion block (18) is symmetrically arranged in a structure of wide at the top and narrow at the bottom, and the vertical section of the extrusion push rod (17) is T-shaped, and the end of the extrusion push rod (17) away from the extrusion block (18) is symmetrically arranged in a structure of wide at the bottom and narrow at the top, and the adjacent sides of the positioning block (15) are both arranged in an inverted chamfered slope.

7. A medium or low voltage cable intermediate accessory according to claim 2, characterised in that: The sliding slot (14) is in the shape of a rectangle with a notch.

8. A medium or low voltage cable intermediate accessory according to claim 3, characterised in that: The limiting groove (19) is in the shape of a semicircular arc at both ends.

9. A medium-low voltage cable intermediate accessory according to claim 1, characterized in that: The mounting groove (22) is formed in the adjacent side of the upper shell (1) and the lower shell (2), and the sealing rubber pad (23) is fixed in the mounting groove (22).

10. A medium-low voltage cable intermediate accessory according to claim 1, characterized in that: The top cover (21) is arranged on the upper shell (1), the top cover (21) is located directly above the filling slot (6), the top cover (21) and the upper shell (1) are fixed by screws, and the sealing ring is fixed on the top cover (21).

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