Outer protective layer structure of intermediate joint

Abstract

The utility model relates to an intermediate joint outer protection layer structure, and relates to the technical field of cable accessories. The intermediate joint outer protection layer structure comprises a shell body, the shell body comprises a left shell and a right shell, positioning rings extend from the ends, close to each other, of the left shell and the right shell, a plurality of fixing sleeves are further arranged on the shell body, each fixing sleeve is arranged outside the two positioning rings in a sleeving mode, and the adjacent fixing sleeves are connected. Compared with the prior art, the shell has the following effects that the fixing sleeves can be arranged on the positioning rings in a sleeving mode, so that fixing between the left shell and the right shell is achieved through fixing between the fixing sleeves, sealing between the left shell and the right shell is achieved, a welding mode adopted in the prior art is replaced, corrosion at the welding position is reduced, and the service life of the shell is prolonged. Therefore, the sealing effect of the intermediate joint is guaranteed, and meanwhile, the intermediate joint is convenient to disassemble by related personnel.

Description

Technical Field

[0001] The present application relates to the technical field of cable accessories, and in particular to an outer protective layer structure of an intermediate joint. Background Art

[0002] With the continuous development of social economy and the increasing level of science and technology, my country's electrical industry is also booming. Cable, as a transmission device for electric energy or signals, is usually composed of several or several groups of wires. Cable intermediate joints are cable accessories used for intermediate connections of cross-linked cables or oil-immersed cables of various voltage levels. They have the functions of making the lines unobstructed, keeping the cables sealed, and ensuring the insulation level at the cable joints, so that they can operate safely and reliably. They play an important role in the electrical industry.

[0003] Regarding the above-mentioned related technologies, since the outer protective layer (copper shell) of the intermediate joint in the prior art is generally composed of a left copper shell and a right copper shell, after the left copper shell and the right copper shell are respectively sleeved on the cable, most of the relevant personnel use welding to fix the left copper shell and the right copper shell, and the welding point between the left copper shell and the right copper shell is exposed to the external environment for a long time, which easily causes corrosion at the welding point of the intermediate joint, thereby easily leading to a reduction in the sealing of the intermediate joint, so it needs to be improved. Utility Model Content

[0004] In order to reduce the probability of reduced sealing due to corrosion at the welding point of the intermediate joint, the present application provides an outer protective layer structure of the intermediate joint.

[0005] The present application provides an outer protective layer structure of an intermediate joint, which adopts the following technical solution:

[0006] A middle joint outer protective layer structure comprises an outer shell body, wherein the outer shell body comprises a left shell body and a right shell body, and positioning rings are extended on the ends of the left shell body and the right shell body that are close to each other. A plurality of fixing sleeves are also arranged on the outer shell body, and each of the fixing sleeves is sleeved outside two positioning rings, and adjacent fixing sleeves are connected.

[0007] By adopting the above technical solution, compared with the prior art in which the left shell body and the right shell body are fixed and sealed by welding, the present application arranges the positioning ring and the fixing sleeve so that the fixing sleeve can be sleeved on the positioning ring, thereby fixing the left shell body and the right shell body through the fixing between the fixing sleeves, and sealing the left shell body and the right shell body, thereby replacing the welding method used in the prior art, reducing the probability of the sealing effect of the middle joint being destroyed due to corrosion at the welding point, ensuring the sealing of the middle joint, and also facilitating the disassembly of the middle joint by relevant personnel.

[0008] Preferably, each of the fixing sleeves has a fixing portion extending outward on both ends close to the adjacent fixing sleeves, the fixing portions on the adjacent fixing sleeves are in contact with each other, and a fixing bolt is provided between each two adjacent fixing portions, the adjacent fixing portions are connected by the fixing bolts, and a reinforcement sleeve is commonly provided on each two adjacent fixing portions.

[0009] By adopting the above technical solution, the setting of the fixing part and the reinforcement sleeve can enable relevant personnel to fix the adjacent fixing parts through the fixing bolts, thereby facilitating the installation between the fixing sleeves. At the same time, the existence of the reinforcement sleeve can also reduce the probability of loosening of the fixing bolts, protect the fixing bolts, reduce the probability of loosening between the fixing sleeves, and ensure the normal use of the present application.

[0010] Preferably, a locking frame and an elastic member are provided on each of the fixing parts, the locking frame is slidably connected to the corresponding fixing part, one end of the locking frame is inserted into the reinforcement sleeve, and the elastic member is used for allowing the locking frame to be continuously inserted into the reinforcement sleeve.

[0011] By adopting the above technical solution, the locking frame and the elastic member are arranged so that the locking frame can be continuously inserted into the reinforcement sleeve under the elastic force of the elastic member, thereby locking the reinforcement sleeve, reducing the probability of the reinforcement sleeve loosening or even falling off the fixed part, thereby reducing the probability of the fixing sleeve loosening due to the falling off of the reinforcement sleeve, and ensuring the normal use of the present application.

[0012] Preferably, each of the side walls of the reinforcement sleeve is provided with an insertion groove for inserting the locking frame.

[0013] By adopting the above-mentioned technical scheme, the setting of the insertion slot enables the locking frame to lock the reinforcement sleeve by being inserted into the insertion slot. At the same time, the through-opening setting of the insertion slot enables relevant personnel to press the locking frame to make the locking frame disengage from the insertion slot, thereby unlocking the reinforcement sleeve, which facilitates the relevant personnel to disassemble the intermediate joint of this application.

[0014] Preferably, a protective cover is provided on the ends of the left shell and the right shell away from each other, and the protective cover is used to be sleeved on the cable. One end of the protective cover is inserted into the corresponding left shell or right shell and is threadedly connected with the corresponding left shell or right shell.

[0015] By adopting the above technical solution, the setting of the protective cover can effectively protect the cable, and at the same time it can also facilitate the installation of the cable by relevant personnel and facilitate the relevant personnel to control the length of the cable extending into the corresponding left shell or right shell.

[0016] Preferably, an extension ring is provided on the end of the left shell and the right shell away from each other, the side of the extension ring away from each other extends out of the corresponding left shell or right shell and is sleeved on the corresponding protective cover, and a guide surface is provided on the side of the extension ring away from each other.

[0017] By adopting the above technical solution, the setting of the extension ring can enable the extension ring to protect the gap between the left shell or the right shell and the corresponding protective cover, thereby reducing the probability of debris or rainwater entering the interior of the intermediate shell through the gap. At the same time, the setting of the guide surface can also divert rainwater, thereby further reducing the probability of rainwater entering the interior of the intermediate shell through the gap.

[0018] Preferably, each protective cover is inserted into one end of the corresponding left shell or the right shell and is provided with a sealing ring, and the sealing ring is in contact with the inner wall of the corresponding left shell or the right shell.

[0019] By adopting the above technical solution, the setting of the sealing ring can seal the gap between the protective cover and the corresponding left shell or right shell, thereby reducing the probability of rainwater entering the intermediate shell through the gap between the protective cover and the corresponding left shell or right shell, increasing the sealing performance, and thus ensuring the smooth operation of the cable.

[0020] Preferably, a fastening bolt and a reinforcement block are also provided on the fixing sleeve, one end of the fastening bolt is located outside the fixing sleeve, the other end of the fastening bolt passes through the fixing sleeve and extends into the shell body, and is rotatably connected to the reinforcement block, the left shell body and the right shell body are both slidably connected to the reinforcement block, the fastening bolt is threadedly connected to the corresponding fixing sleeve, and the reinforcement block is used to fit against the outer side of the cable.

[0021] By adopting the above technical solution, the setting of the fastening bolts and the reinforcement block allows relevant personnel to rotate the fastening bolts, so that the fastening bolts drive the reinforcement block to slide, thereby clamping the docking parts between the cables, thereby ensuring the docking effect of the cables and reducing the probability of loosening or deviation at the cable docking point.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. The positioning ring and the fixing sleeve are arranged so that the fixing sleeve can be sleeved on the positioning ring, so that the left shell and the right shell are fixed by the fixing sleeves, and the left shell and the right shell are sealed, thereby replacing the welding method used in the prior art, reducing the probability of corrosion at the welding point and causing the sealing effect of the middle joint to be destroyed, ensuring the sealing effect of the middle joint, and also facilitating the disassembly of the middle joint by relevant personnel;

[0024] 2. The arrangement of the fixing part and the reinforcement sleeve enables the relevant personnel to fix the adjacent fixing parts by fixing bolts, thereby facilitating the installation between the fixing sleeves. At the same time, the existence of the reinforcement sleeve can also reduce the probability of loosening of the fixing bolts, protect the fixing bolts, reduce the probability of loosening between the fixing sleeves, and ensure the normal use of the present application;

[0025] 3. The setting of the fastening bolts and the reinforcement blocks enables relevant personnel to rotate the fastening bolts, so that the fastening bolts drive the reinforcement blocks to slide, thereby clamping the butt joints between the cables, thereby ensuring the butt joint effect of the cables and reducing the chance of loosening or offsetting the cable butt joints. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram used to reflect the overall structure of the outer protective layer of the intermediate joint in the embodiment of the present application.

[0027] Figure 2 It is a schematic diagram of the structure of the positioning ring in the embodiment of the present application.

[0028] Figure 3 It is a schematic diagram of the structure of the reinforcement block in the embodiment of the present application.

[0029] Figure 4 It is a schematic diagram of the structure of the locking frame in the embodiment of the present application.

[0030] Explanation of the accompanying drawings: 1. Shell body; 11. Left shell; 12. Right shell; 13. Positioning ring; 14. Extension ring; 2. Fixing sleeve; 21. Fixing part; 3. Protective sleeve; 31. Sealing ring; 4. Fastening bolt; 5. Reinforcement block; 6. Fixing bolt; 7. Locking frame; 8. Elastic member; 9. Reinforcement sleeve; 91. Insertion groove. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-4 This application is described in further detail.

[0032] The present application embodiment discloses an outer protective layer structure of an intermediate joint. Figure 1 and Figure 2 The outer protective layer structure of the middle joint includes a shell body 1, which includes a left shell body 11 and a right shell body 12. A positioning ring 13 is extended from one end of the left shell body 11 and the right shell body 12 that are close to each other. A plurality of fixing sleeves 2 are also arranged on the shell body 1, and each fixing sleeve 2 is sleeved outside two positioning rings 13, and adjacent fixing sleeves 2 are connected.

[0033] Reference Figure 1 and Figure 2Each cable is fixedly provided with a protective cover 3, one end of which is inserted into the end of the corresponding left shell 11 or right shell 12 away from each other, and is threadedly connected with the inner wall of the corresponding left shell 11 or right shell 12, so as to achieve fixation. A guide surface is provided on the outer side of each protective cover 3 to allow rainwater to flow in a direction away from the fixed cover 2.

[0034] Reference Figure 1 and Figure 2 An extension ring 14 is extended outwardly from one end of the left shell 11 or the right shell 12 away from each other, and the left shell 11 and the right shell 12 are integrally formed with the corresponding extension ring 14. Each extension ring 14 extends to the end away from the fixed sleeve 2, and is sleeved on the corresponding protective sleeve 3, and is attached to the outer wall of the corresponding protective sleeve 3. A guide surface is provided on the end of each extension ring 14 away from the fixed sleeve 2.

[0035] Reference Figure 1 and Figure 2 A sealing ring 31 is sleeved on one end of each protective sleeve 3 inserted into the corresponding left shell 11 or right shell 12, the inner wall of the sealing ring 31 is tightly attached to the protective sleeve 3, and the outer wall of the sealing ring 31 is tightly attached to the inner wall of the corresponding left shell 11 or right shell 12.

[0036] Reference Figure 1 and Figure 2 , the left shell 11 and the right shell 12 are integrally formed with the corresponding positioning ring 13. In the embodiment of the present application, the number of the fixing sleeves 2 is set to two, and the fixing sleeves 2 are semicircular rings. Each fixing sleeve 2 is sleeved on the left shell 11 and the right shell 12, and the outer walls of the left shell 11 and the right shell 12 are in contact with the inner wall of each fixing sleeve 2. Each positioning ring 13 is inserted into each fixing sleeve 2.

[0037] Reference Figure 2 and Figure 3 Each fixing sleeve 2 is provided with a fastening bolt 4 and a reinforcing block 5. One end of each fastening bolt 4 is located outside the corresponding fixing sleeve 2, and the other end of each fastening bolt 4 passes through the corresponding fixing sleeve 2 and reaches the inside of the housing body 1. Notches for two fastening bolts 4 to pass through are provided on the left housing 11 and the right housing 12.

[0038] Reference Figure 2 and Figure 3The fastening bolt 4 is threadedly connected to the corresponding fixing sleeve 2. The fastening bolt 4 extends to one end inside the housing body 1 and is rotatably connected to the corresponding reinforcing block 5 through a bearing. The left housing 11 and the right housing 12 are both slidably connected to each reinforcing block 5, and the sliding direction of the reinforcing block 5 is the axial direction of the fastening bolt 4. The outer wall of each reinforcing block 5 away from the fastening bolt 4 is arc-shaped and concavely arranged to fully fit the side wall of the cable. When the reinforcing block 5 is pressed against the cable, the fastening bolt 4 is tightened and fixed to the fixing sleeve 2.

[0039] Reference Figure 1 and Figure 4 Each fixing sleeve 2 has a fixing portion 21 extending outwardly from both ends along its length direction, and each fixing portion 21 is integrally formed with the corresponding fixing sleeve 2. The fixing portions 21 at the same end of the two fixing sleeves 2 are attached to each other, and a fixing bolt 6 is further provided between two adjacent fixing portions 21, and the two adjacent fixing portions 21 are fixedly connected by the corresponding fixing bolts 6.

[0040] Reference Figure 1 and Figure 4 , a locking frame 7 and an elastic member 8 are provided on the side wall of each fixing portion 21, and the number of locking frames 7 and elastic members 8 on each fixing portion 21 is set to two, and they are arranged one by one, and are respectively located on both sides of the fixing portion 21 along the width direction of the fixing sleeve 2. One end of each locking frame 7 extends into the fixing portion 21 and is slidably connected to the inner wall of the fixing portion 21, and the sliding direction of the locking frame 7 is corresponding to the width direction of the fixing sleeve 2. The other end of each locking frame 7 extends out of the fixing portion 21 and is provided with an arc-shaped guide surface, which is provided on the side of the fixing portion 21 away from the fixing sleeve 2.

[0041] Reference Figure 1 and Figure 4 In the embodiment of the present application, the elastic member 8 is configured as a pressure spring, and the pressure spring is sleeved on one end of the corresponding locking frame 7 extending into the fixing portion 21. One end of the pressure spring abuts against the locking frame 7, and the other end of the pressure spring abuts against the inner side wall of the corresponding fixing portion 21.

[0042] Reference Figure 1 and Figure 4 Each of the two adjacent fixing parts 21 is provided with a reinforcing sleeve 9, and the reinforcing sleeve 9 is slidably connected to the corresponding fixing part 21, and the sliding direction of the reinforcing sleeve 9 is perpendicular to the sliding direction of the locking frame 7. Each reinforcing sleeve 9 is provided with an opening at one end close to the fixing sleeve 2. Each reinforcing sleeve 9 is provided with an insertion groove 91 on both side walls along the width direction of the fixing sleeve 2, and each locking frame 7 is inserted into the corresponding insertion groove 91.

[0043] Reference Figure 1 and Figure 4When the reinforcing sleeve 9 is sleeved on the corresponding two fixing parts 21, the end wall of the reinforcing sleeve 9 abuts against the arc-shaped guide surface on the locking frame 7, so that the locking frame 7 slides into the fixing part 21 to avoid the reinforcing sleeve 9, and the elastic member 8 is compressed in this process. When the reinforcing sleeve 9 continues to slide and the locking frame 7 completely corresponds to the insertion groove 91, the locking frame 7 slides out of the fixing part 21 under the elastic force of the elastic member 8, and is inserted into the corresponding insertion groove 91 to lock the reinforcing sleeve 9.

[0044] The implementation principle of the outer protective layer structure of the intermediate joint in the embodiment of the present application is as follows: when in use, first screw the threaded end of the protective sleeve 3 into the corresponding left shell 11 or right shell 12, so that the protective sleeve 3 is fixed to the corresponding left shell 11 or right shell 12. Then, the two fixing sleeves 2 are sleeved on the left shell 11 and the right shell 12, and fixed by the fixing bolts 6. Then, the reinforcement sleeve 9 is sleeved on the corresponding fixing part 21, and then the tightening bolts 4 are rotated to make the reinforcement block 5 press against the joint of the cable to complete the installation.

[0045] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An outer protective layer structure of an intermediate joint, comprising a shell body (1), wherein the shell body (1) comprises a left shell body (11) and a right shell body (12), characterized in that: A positioning ring (13) is extended from one end of the left shell (11) and the right shell (12) which are close to each other. A plurality of fixing sleeves (2) are also arranged on the shell body (1). Each fixing sleeve (2) is sleeved outside two positioning rings (13), and adjacent fixing sleeves (2) are connected.

2. The outer protective layer structure of an intermediate joint according to claim 1, characterized in that: Each of the fixing sleeves (2) has fixing parts (21) extending outwards at both ends close to the adjacent fixing sleeves (2); the fixing parts (21) on the adjacent fixing sleeves (2) are in contact with each other, and a fixing bolt (6) is provided between each two adjacent fixing parts (21); the adjacent fixing parts (21) are connected by the fixing bolt (6), and a reinforcing sleeve (9) is commonly provided on each two adjacent fixing parts (21).

3. The outer protective layer structure of an intermediate joint according to claim 2, characterized in that: A locking frame (7) and an elastic member (8) are provided on each of the fixing portions (21); the locking frame (7) is slidably connected to the corresponding fixing portion (21); one end of the locking frame (7) is inserted into the reinforcement sleeve (9); and the elastic member (8) is used to allow the locking frame (7) to be continuously inserted into the reinforcement sleeve (9).

4. The outer protective layer structure of an intermediate joint according to claim 3, characterized in that: Each of the reinforcing sleeves (9) has a side wall through which an insertion slot (91) for the locking frame (7) to be inserted is provided.

5. The outer protective layer structure of an intermediate joint according to claim 1, characterized in that: A protective sleeve (3) is provided on one end of the left shell (11) and the right shell (12) that is away from each other. The protective sleeve (3) is used to be sleeved on the cable. One end of the protective sleeve (3) is inserted into the corresponding left shell (11) or right shell (12) and is threadedly connected to the corresponding left shell (11) or right shell (12).

6. The outer protective layer structure of an intermediate joint according to claim 5, characterized in that: An extension ring (14) is provided on one end of the left shell (11) and the right shell (12) that are away from each other. The side of the extension ring (14) that is away from each other extends out of the corresponding left shell (11) or right shell (12) and is sleeved on the corresponding protective sleeve (3). The side of the extension ring (14) that is away from each other is provided with a guide surface.

7. The outer protective layer structure of an intermediate joint according to claim 5, characterized in that: Each of the protective sleeves (3) is inserted into one end of the corresponding left shell (11) or right shell (12) and is provided with a sealing ring (31), and the sealing ring (31) is in contact with the inner wall of the corresponding left shell (11) or right shell (12).

8. The outer protective layer structure of an intermediate joint according to claim 1, characterized in that: The fixing sleeve (2) is also provided with a fastening bolt (4) and a reinforcing block (5); one end of the fastening bolt (4) is located outside the fixing sleeve (2); the other end of the fastening bolt (4) passes through the fixing sleeve (2) and extends into the shell body (1), and is rotatably connected to the reinforcing block (5); the left shell (11) and the right shell (12) are both slidably connected to the reinforcing block (5); the fastening bolt (4) is threadedly connected to the corresponding fixing sleeve (2); and the reinforcing block (5) is used to abut against the outer side of the cable.

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