Cable joint sheath

Abstract

The invention relates to a cable joint sheath, and belongs to the field of cable equipment. According to the technical scheme, the cable connector sheath comprises a first sheath single body, a second sheath single body and a connecting assembly, the connecting assembly comprises two semi-annular limiting pieces, the annular inner surface of each limiting piece is provided with at least two limiting protruding rings, the first sheath single body and the second sheath single body are provided with limiting grooves corresponding to the limiting protruding rings in position, and the limiting grooves are connected with the limiting pieces through the limiting protruding rings. The limiting convex ring is clamped into the limiting groove; connecting plates are arranged on the two straight edges of each limiting piece respectively, after the two limiting pieces are in butt joint, the connecting plates at the corresponding positions are attached to each other, the connecting plates and the limiting pieces are jointly sleeved with a fixing base, and the fixing base is fixedly connected with the two connecting plates located in the fixing base through a plug pin mechanism. According to the cable joint sheath of the scheme, the fixing seat sleeves the connecting plate of the two limiting pieces, and the bolt mechanism is used for fixing, so that the two limiting pieces are prevented from being separated, the fixed installation of the sheath is realized, the later possible disassembly and maintenance are more convenient, and the operation difficulty is greatly reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of cable equipment, in particular to a cable joint sheath. BACKGROUND

[0002] During cable laying, there are often situations that require splicing of cables, at which time cable joints need to be made for connection. When making cable joints, the cable sheaths and insulation layers at the ends of two cable sections need to be peeled off first, the conductors are polished to remove the oxidation layer and conductive paste is applied. Then the exposed parts of the two cable ends are connected using the crimping method (for high-voltage cables) or the welding method (for low-voltage small-section cables). Finally, the external structures such as insulation tape winding and cable joint sheath installation are performed.

[0003] In general, after the cable joint is made, the cable is connected and put into normal operation, and there is no need to disassemble it again. However, when the cable system fails and the fault point is detected to be near the cable joint, when the cable system needs to be expanded, the line needs to be changed, or the equipment needs to be replaced, the cable sheath also needs to be disassembled, and the cable joint needs to be detected or disassembled.

[0004] Most of the current cable joint sheaths are flange structures, that is, a sheath is fitted on the end of each cable section, and after the cable is joined, the two sheaths are connected by screwing the bolts. As described above, when the cable sheath needs to be disassembled, it has usually been a long time since it was installed, and when used outdoors, the bolts may have rusted and adhered, making it very difficult to disassemble. SUMMARY

[0005] The present application provides a cable joint sheath that is easy to disassemble, in order to solve the problem that the current cable joint sheaths are connected by bolts and are difficult to disassemble after rusting.

[0006] To solve the above problems, the technical scheme adopted by the present application is a cable joint sheath, comprising a first sheath unit and a second sheath unit, both of which are provided with an inner hole for a cable to pass through, and further comprising a connecting assembly, the connecting assembly comprising two semi-annular limiters, the two limiters being butted into an annular shape and buckled at the joint of the first sheath unit and the second sheath unit, the annular inner surface of the limiters being provided with at least two limiting convex rings, the outer circumferential surface of the first sheath unit and the second sheath unit being provided with limiting grooves corresponding to the positions of the limiting convex rings, and the limiting convex rings being clamped into the limiting grooves; the two straight edges of the limiters are respectively provided with connecting plates, the connecting plates at the corresponding positions being mutually adhered after the two limiters are butted, and both of them being collectively sleeved with a fixing seat, and the fixing seat and the two connecting plates located inside it being fixedly connected through a bolt mechanism. In the cable joint sheath of the present scheme, after the first sheath unit and the second sheath unit are butted, the two are connected in the way of pipe clamp through the two limiters, the anti-pulling effect is realized through the clamping way of the two limiting convex rings and the limiting grooves, the connecting plates of the two limiters are sleeved by the fixing seat, and are fixed through the bolt mechanism, preventing the two limiters from separating, realizing the fixed installation of the sheath, and through the bolt insertion, it is more convenient for the possible disassembly and maintenance in the later period, greatly reducing the operation difficulty.

[0007] As a preferred implementation scheme of a cable joint sheath, between the end faces of the first sheath unit and the second sheath unit close to each other, one of them is provided with a plurality of positioning pins, and the other is provided with a corresponding insertion hole, and after the first sheath unit and the second sheath unit are butted, the positioning pins are inserted into the insertion hole. The first sheath unit and the second sheath unit can be quickly and accurately positioned during installation, avoiding mispositioning of the two, improving installation efficiency; at the same time, after the positioning pins are inserted into the insertion hole, the connection stability between the two sheath units can be enhanced to a certain extent, preventing relative rotation or deviation during installation.

[0008] As a preferred implementation scheme of a cable joint sheath, between the end faces of the first sheath unit and the second sheath unit close to each other, one of them is provided with a sealing ring, and the other is provided with an annular groove, the sealing ring protruding from the end face of the first sheath unit or the second sheath unit, and after the first sheath unit and the second sheath unit are butted, the sealing ring is inserted into the annular groove. The cooperation design of the sealing ring and the annular groove can effectively prevent external substances such as water, dust, corrosive gas, etc. from entering the inside of the cable joint, protect the cable joint from the influence of the external environment, and improve the insulation performance and service life of the cable joint; at the same time, good sealing helps to maintain the stable operation of the cable joint, reducing the probability of failure caused by external factors.

[0009] As a preferred implementation scheme of the cable joint sheath, the plug-in mechanism comprises a fixed pin, at least one first pin hole is arranged at the position of the two ends of the connecting plate respectively along the extension direction of the cable, the fixed seat is a rectangular sleeve structure, the connecting plate is located in the rectangular inner hole of the fixed seat, a second pin hole is arranged on the pipe wall of the fixed seat, and the fixed pin is inserted into the first pin hole and the second pin hole. Through the plug-in cooperation of the fixed pin with the first pin hole and the second pin hole, the fixed seat and the connecting plate can be reliably fixed together, thereby ensuring that the two limiters will not be separated during use, enhancing the fastening of the connecting assembly, and ensuring the fixed installation effect of the cable joint sheath.

[0010] As a preferred implementation scheme of the cable joint sheath, the opposite sides of the two connecting plates are respectively provided with guide grooves, and the top surface and the bottom surface of the rectangular inner hole of the fixed seat are respectively provided with limit strips arranged along the depth direction of the rectangular hole. The limit strips are connected with the guide grooves. The guide grooves and the limit strips are matched with each other, can play a precise guiding role when the connecting plate and the fixed seat are installed, can make the connecting plate quickly and accurately placed into the inner hole of the fixed seat, and improve the installation efficiency; meanwhile, the limit action of the limit strips in the guide grooves can prevent the connecting plate from being horizontally deviated or rotated in the fixed seat, ensure that the fixed pin can be smoothly inserted into the first pin hole and the second pin hole, and further enhance the stability and reliability of the connecting assembly.

[0011] As a preferred implementation scheme of the cable joint sheath, the plug-in mechanism further comprises a support seat, the support seat is fixedly connected with the fixed seat, the support seat comprises an upper flat plate and a lower flat plate, the upper flat plate is located above the fixed seat, and the lower flat plate is located below the fixed seat; a fixed column is arranged between the upper flat plate and the top surface of the fixed seat and between the lower flat plate and the bottom surface of the fixed seat, a guide plate is slidably installed on the fixed column, and the fixed pin is installed on the side of the guide plate facing the fixed seat. The support seat and the fixed seat provide a stable support and sliding guide structure for the fixed pin, so that the plug-in and plug-out operation of the fixed pin is more smooth; meanwhile, external forces received by the fixed pin are dispersed, so that the fixed pin is prevented from being deformed or damaged due to uneven force, the service life of the plug-in mechanism is prolonged, and the reliability and stability of the cable joint sheath connection are further improved.

[0012] As a preferred implementation scheme of the cable joint sheath, a spring is sleeved on the fixed column, and the spring is located on the side of the guide plate away from the fixed seat. The spring provides continuous elastic force for the guide plate after the fixed pin is inserted into the pin hole, so that the fixed pin and the pin hole are kept in close connection, the fixed pin is prevented from loosening or falling off due to vibration and the like, and the fastening of the plug-in mechanism is enhanced.

[0013] As a preferred implementation scheme of the cable joint sheath, the first push plate and the second push plate are respectively fixedly installed on the two guide plates. The first push plate and the second push plate provide a force applying structure for the operator, so that the operator can more easily and accurately control the movement of the guide plate, thereby realizing the plugging operation of the fixing pin, facilitating force application, reducing the labor intensity of the operator, and improving the accuracy and efficiency of the plugging operation of the fixing pin, facilitating the disassembly and assembly of the cable joint sheath.

[0014] Through the above technical scheme, it can be seen that the advantages of the present application are: the present scheme adopts the design of plug-in and positioning pin pre-positioning to simplify the installation process, reduce the operation difficulty, and make the fixed pin plugging labor-saving and accurate through the cooperation of the push plate and the guide structure, facilitating the later disassembly and maintenance, effectively reducing the labor intensity and maintenance workload, avoiding the problem of bolt corrosion; the sealing ring and the annular groove are tightly matched, which can effectively block the invasion of moisture, dust and corrosive gas, significantly improve the insulation performance and environmental interference resistance of the cable joint, prolong the service life of the joint, and reduce the failure probability caused by external factors; the guide groove and the limiting strip realize precise guidance, prevent the connection plate from deviating, the support seat disperses the stress of the fixed pin, avoids deformation and damage, prolongs the service life of the plug-in mechanism, and further guarantees the reliability and stability of the cable joint sheath connection. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the present application, the drawings required to be used in the description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0016] Figure 1 The structure schematic diagram of the specific embodiment of the present application.

[0017] Figure 2 The structure schematic diagram of the first sheath monomer, the second sheath monomer and the limiting piece in the specific embodiment of the present application.

[0018] Figure 3 The structure schematic diagram of the specific embodiment of the present application. Figure 2 The structure schematic diagram of the specific embodiment of the present application.

[0019] Figure 4 The structure schematic diagram of the specific embodiment of the present application. Figure 1 .

[0020] Figure 5 The structure schematic diagram of the specific embodiment of the present application. Figure 2 .

[0021] MAIN REFERENCE NUMERALS 1. First sheath monomer, 2. Second sheath monomer, 3. Cable core, 4. Connection assembly, 401. Positioning pin, 402. Sealing ring, 403. Limiting piece, 404. Limiting convex ring, 405. Fixed seat, 406. Limiting strip, 407. Fixed pin, 408. Guide plate, 409. Fixed column, 410. Spring, 411. Support seat, 411-1. Upper flat plate, 411-2. Lower flat plate, 412. First push plate, 413. Second push plate, 414. Connecting plate, 415. First pin hole, 416. Guide groove, 417. Second pin hole. DETAILED DESCRIPTION

[0022] To make the purposes, features, and advantages of the present application more obvious and easy to understand, the technical solutions in the present application will be described clearly and completely below in combination with the drawings in the specific embodiments. Obviously, the embodiments described below are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present patent, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present patent.

[0023] As shown in Figure 1 , 3 , a cable joint sheath includes a first sheath monomer 1 and a second sheath monomer 2, both of which are provided with an inner hole for a cable to pass through. The first sheath monomer 1 and the second sheath monomer 2 are respectively sleeved on two cable cores 3 before the two cable cores 3 are connected. After the two cable cores 3 are connected, the first sheath monomer 1 and the second sheath monomer 2 are pushed to be close to each other, covering the butt joint area of the two cable cores 3 (the diagonal area of the cable core 3 in the middle). Figure 3 To facilitate the butt joint of the first sheath monomer 1 and the second sheath monomer 2, a plurality of positioning pins 401 are arranged on the end face of the first sheath monomer 1 between the end faces of the first sheath monomer 1 and the second sheath monomer 2 close to each other, and a plurality of insertion holes corresponding to the positioning pins 401 are arranged on the end face of the second sheath monomer 2. After the first sheath monomer 1 and the second sheath monomer 2 are butt jointed, the positioning pins 401 are inserted into the insertion holes (the positioning pins 401 and the insertion holes can be exchanged in position). Meanwhile, a sealing ring 402 is arranged on the end face of the second sheath monomer 2, and an annular groove is arranged on the end face of the first sheath monomer 1. The sealing ring 402 protrudes from the end face of the first sheath monomer 1 or the second sheath monomer 2. After the first sheath monomer 1 and the second sheath monomer 2 are butt jointed, the sealing ring 402 is inserted into the annular groove (the sealing ring 402 and the annular groove can be exchanged in position).

[0024] It also includes a connecting component 4, which includes two semi-annular limiting members 403. The two limiting members 403 are joined together to form an annular shape and are fastened to the seam of the first sheath unit 1 and the second sheath unit 2. The inner surface of the annular limiting member 403 is provided with at least two limiting protrusions 404. The outer peripheral surfaces of the first sheath unit 1 and the second sheath unit 2 are provided with limiting grooves corresponding to the positions of the limiting protrusions 404. The limiting protrusions 404 are inserted into the limiting grooves. The two straight edges of the limiting member 403 are respectively provided with connecting plates 414. After the two limiting members 403 are connected, the connecting plates 414 at the corresponding positions are fitted together and both are fitted with a fixing seat 405. The fixing seat 405 is fixedly connected to the two connecting plates 414 located inside it by a pin mechanism.

[0025] The pin mechanism includes a fixing pin 407, and at least one first pin hole 415 is provided at each of the two ends of the connecting plate 414, such as... Figure 2 As shown, in this embodiment, each end is provided with two, for a total of four first pin holes 415. The four first pin holes 415 are arranged along the extension direction of the cable. The fixing seat 405 is a rectangular sleeve structure. The connecting plate 414 is located in the rectangular inner hole of the fixing seat 405. The tube wall of the fixing seat 405 is provided with a second pin hole 417. The fixing pin 407 is inserted into the first pin hole 415 and the second pin hole 417. Specifically, the pin mechanism also includes a support seat 411. The support seat 411 is fixedly connected to the fixing seat 405. The support seat 411 includes an upper plate 411-1 and a lower plate 411-2. The upper plate 411-1 is located on the fixing seat 405. Above the base 405, the lower plate 411-2 is located below the fixed base 405; a fixing post 409 is provided between the upper plate 411-1 and the top surface of the fixed base 405 and between the lower plate 411-2 and the bottom surface of the fixed base 405. A guide plate 408 is slidably mounted on the fixing post 409. A fixing pin 407 is installed on the side of the guide plate 408 facing the fixed base 405. A spring 410 is sleeved on the fixing post 409. The spring 410 is located on the side of the guide plate 408 facing away from the fixed base 405. A first push plate 412 and a second push plate 413 are respectively fixedly mounted on the two guide plates 408.

[0026] The two connecting plates 414 are respectively provided with guide grooves 416 on opposite sides. The top and bottom surfaces of the rectangular inner hole of the fixing seat 405 are respectively provided with limiting strips 406. The limiting strips 406 are arranged along the depth direction of the rectangular hole and are connected to the guide grooves.

[0027] When the cable cores 3 need to be butt-jointed to each other, the positioning pin 401 arranged on the end face of the first sheath unit 1 is inserted into the second sheath unit 2 when the first sheath unit 1 is butt-jointed to the second sheath unit 2, thereby limiting the second sheath unit 2 to prevent it from rotating at will, and because the second sheath unit 2 is connected with the sealing ring 402, the sealing ring 402 is also inserted into the first sheath unit 1 at this time, then the limiting piece 403 is connected at the butt-joint of the first sheath unit 1 and the second sheath unit 2, and because the inner surface of the limiting piece 403 is provided with the limiting convex ring 404, the limiting convex ring 404 connects the first sheath unit 1 and the second sheath unit 2 in the axial direction and covers the butt-joint seam of the first sheath unit 1 and the second sheath unit 2, so that the sealing property of the butt-joint of the cable is ensured through the cooperation of the sealing ring 402 and the limiting convex ring 404, thereby preventing the entry of dust and water vapor from the outside and prolonging the service life of the high-voltage cable; because the fixed seat 405 is connected with the limiting strip 406, then the fixed seat 405 is sleeved at the connecting position of the limiting piece 403, at this time the limiting piece 403 and the fixed seat 405 are connected in an engagement manner, and because the fixed pin 407 is connected with the guide plate 408, then the spring 410 is reset to generate elastic force to make the guide plate 408 move in the direction of approaching until the guide plate 408 drives the fixed pin 407 to penetrate through the limiting piece 403, thereby fixing the limiting piece 403 to prevent it from rotating at will, so that the butt-joint fixing of the high-voltage cable can be completed without repeatedly rotating a plurality of bolts, time and effort are saved, and subsequent disassembly and maintenance are facilitated, thereby playing a role of facilitating sealing and rapid installation when the high-voltage cable joint is used; when disassembly and maintenance are needed, because the guide plate 408 is connected with the first guide seat 412 and the second guide seat 413, the first guide seat 412 and the second guide seat 413 are first pushed to move in the direction of moving away from each other, then the movement of the first guide seat 412 and the second guide seat 413 drives the guide plate 408 to move, and because the guide plate 408 and the fixed column 409 are connected in a sliding manner, at this time the movement of the guide plate 408 is limited by the fixed column 409 on the inner wall of the supporting seat 411 to move stably, and the movement of the guide plate 408 will extrude the spring 410 to cause it to deform, until the guide plate 408 drives the fixed pin 407 to be disconnected with the limiting piece 403, thereby canceling the fixation of the limiting piece 403, then the fixed seat 405 is moved to be disconnected with the limiting piece 403, and then the limiting piece 403 is moved to be disconnected with the first sheath unit 1, so that the butt-joint of the high-voltage cable can be disassembled and maintained, thereby eliminating the worry about the rust of the bolts affecting the maintenance work of the high-voltage cable.

[0028] It can be seen from the above embodiments that the application has the beneficial effects that the design of the latch and the positioning pin simplifies the installation process, reduces the operation difficulty, the cooperation of the push plate and the guide structure makes the insertion and removal of the fixing pin labor-saving and accurate, facilitates the later disassembly and maintenance, effectively reduces the labor intensity and the maintenance workload, avoids the problem of bolt corrosion, the cooperation of the sealing ring and the annular groove can effectively block the invasion of moisture, dust and corrosive gas, significantly improves the insulation performance and the environmental interference resistance of the cable joint, prolongs the service life of the joint, and reduces the failure probability caused by external factors, the precise guidance of the guide groove and the limiting strip prevents the offset of the connecting plate, the support seat disperses the stress of the fixing pin, avoids the deformation and damage of the fixing pin, prolongs the service life of the latch mechanism, and further guarantees the reliability and stability of the cable joint sheath connection.

[0029] The above description of disclosed embodiments enables one skilled in the art to make or use the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A cable joint sheath comprising a first sheath body (1) and a second sheath body (2), the first sheath body (1) and the second sheath body (2) each being provided with an inner bore for a cable to pass through, characterized in that, Further comprising a connecting assembly (4), the connecting assembly (4) comprises two semi-annular limiters (403), the two limiters (403) are butted to be annular and buckled at the joint of the first sheath unit (1) and the second sheath unit (2), the annular inner surface of the limiter (403) is provided with at least two limiting convex rings (404), the outer circumferential surface of the first sheath unit (1) and the second sheath unit (2) is provided with limiting grooves corresponding to the positions of the limiting convex rings (404), the limiting convex rings (404) are clamped into the limiting grooves; Two straight edges of the limiter (404) are respectively provided with connecting plates (414), after the two limiters (404) are butted, the connecting plates (414) at the corresponding positions are mutually adhered and are jointly sleeved with a fixing seat (405), the fixing seat (405) is fixedly connected with the two connecting plates (414) located inside the fixing seat (405) through a bolt mechanism.

2. The cable splice enclosure of claim 1, wherein, Between the end faces of the first sheath unit (1) and the second sheath unit (2) which are close to each other, one of the end faces is provided with a plurality of positioning pins (401), and the other end face is provided with insertion holes corresponding to the positioning pins (401), after the first sheath unit and the second sheath unit (2) are butted, the positioning pins (401) are inserted into the insertion holes.

3. The cable splice enclosure of claim 1, wherein, Between the end faces of the first sheath unit (1) and the second sheath unit (2) which are close to each other, one of the end faces is provided with a sealing ring (402), and the other end face is provided with an annular groove, the sealing ring (402) protrudes from the end face of the first sheath unit (1) or the second sheath unit (2), after the first sheath unit (1) and the second sheath unit (2) are butted, the sealing ring (402) is inserted into the annular groove.

4. The cable splice enclosure of claim 1, wherein, In the extension direction of the cable, the bolt mechanism comprises a fixed pin (407), both ends of the connecting plate (414) are respectively provided with at least one first pin hole (415), the fixing seat (405) is a rectangular sleeve structure, the connecting plate (414) is located in the rectangular inner hole of the fixing seat (405), the pipe wall of the fixing seat (405) is provided with a second pin hole (417), and the fixed pin (407) is inserted into the first pin hole (415) and the second pin hole (417).

5. The cable splice enclosure of claim 1, wherein, The opposite faces of the two connecting plates (414) are respectively provided with guide grooves (416), the top surface and the bottom surface of the rectangular inner hole of the fixing seat (405) are respectively provided with limiting strips (406), the limiting strips (406) are arranged along the depth direction of the rectangular hole, and the limiting strips (406) are connected with the guide grooves in a matched mode.

6. The cable splice enclosure of claim 4, wherein, The bolt mechanism further comprises a support seat (411), the support seat (411) is fixedly connected with the fixing seat (405), the support seat (411) comprises an upper flat plate (411-1) and a lower flat plate (411-2), the upper flat plate (411-1) is located above the fixing seat (405), and the lower flat plate (411-2) is located below the fixing seat (405); The upper flat plate (411-1) and the top surface of the fixed seat (405) and the lower flat plate (411-2) and the bottom surface of the fixed seat (405) are provided with fixed columns (409), the fixed columns (409) are slidably provided with guide plates (408), and the fixed pins (407) are installed on the side of the guide plates (408) facing the fixed seat (405).

7. The cable splice enclosure of claim 6, wherein, The fixed columns (409) are provided with springs (410), and the springs (410) are located on the side of the guide plates (408) away from the fixed seat (405).

8. The cable splice enclosure of claim 7, wherein, The two guide plates (408) are respectively provided with first push plates (412) and second push plates (413).

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