Splicing double-parallel photovoltaic cable protection structure

Abstract

The invention relates to the technical field of cable protection, and discloses a splicable double-parallel photovoltaic cable protection structure which comprises two connecting sleeves, telescopic cable fixing mechanisms are arranged in the connecting sleeves, and a protection sleeve is connected between the two connecting sleeves in a sleeving mode. Abutting rings are sleeved with the two ends of the protective sleeve and are matched with the cable fixing mechanism in an abutting mode, and a limiting mechanism is slidably connected to the connecting sleeve and is matched with the protective sleeve in a clamping mode. According to the spliced double-parallel photovoltaic cable protection structure, a limiting sleeve is pushed towards one side of a protection sleeve, a connecting sleeve is connected with the protection sleeve in an inserted mode, and an abutting ring abuts against a connecting circular ring, so that all arc-shaped plates are gathered together to tightly clamp a cable, meanwhile, after a limiting rod moves into a limiting groove, a second spring drives the limiting rod to abut against a positioning groove, and the cable is clamped. The connecting sleeve and the protective sleeve are fixedly connected, operation is easy, and connection is stable.

Description

Technical Field

[0001] The invention relates to the technical field of cable protection, and in particular to a splicable double-parallel photovoltaic cable protection structure. Background Art

[0002] The double-parallel photovoltaic cable has the characteristics of low smoke and halogen-free, cold resistance, UV resistance, ozone resistance and weather resistance, which makes it very suitable for various indoor and outdoor solar power generation fields.

[0003] After the wire cores of two sections of dual-parallel photovoltaic cables are connected, the exposed wire cores need to be protected. Currently, the main method is to fix the male and female connectors of the cables to the ends of the two sections of cables respectively, and then plug and fix the male and female connectors to achieve protection of the cable connection. However, the method of fixing the male and female connectors of the cables to the cables is relatively cumbersome and inconvenient. The prior art patent document with the publication number CN117117770A provides a cable assembly connection end protection device, which can quickly assemble the device, is simple and quick to operate, and effectively improves the installation efficiency. Moreover, it only needs to press the sliding rubber block to make the locking connection block slide to compress the light spring, and the end of the locking connection block is misaligned with the L-shaped locking plug rod, so that the device can be quickly disassembled.

[0004] Although the above device simplifies the installation process, it requires additional power supply and inflation equipment, which increases the cost and reduces portability. At the same time, low temperature will reduce the volume of air in the inflation ring, thereby reducing the connection stability between the anti-slip module and the cable. Therefore, we propose a splicable dual-parallel photovoltaic cable protection structure. Summary of the invention

[0005] In view of the above-mentioned existing problems that additional power supply and inflation equipment are required and low temperature will reduce the connection stability between the anti-slip module and the cable, the present invention is proposed.

[0006] Therefore, the purpose of the present invention is to provide a splicable dual-parallel photovoltaic cable protection structure, which aims to solve the problem that additional power supply and inflation equipment are needed and low temperature will reduce the connection stability between the anti-slip module and the cable.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a splicable double-parallel photovoltaic cable protection structure, comprising two connecting sleeves, wherein a retractable cable fixing mechanism is arranged in the connecting sleeves, a protective sleeve is sleeved between the two connecting sleeves, and abutment rings are sleeved in both ends of the protective sleeves, wherein the abutment rings abut against the cable fixing mechanism, and a limiting mechanism is slidably connected to the connecting sleeves, and the limiting mechanism is snap-fitted with the protective sleeve;

[0008] The cable fixing mechanism comprises two connecting rings that are slidably matched with the connecting sleeves, a plurality of arc-shaped plates are arranged in a circular shape with equal spacing between the two connecting rings, and a connecting rod is hinged between the ends of the arc-shaped plates and the connecting rings;

[0009] The limiting mechanism comprises a limiting sleeve, the limiting sleeve is elastically connected to the connecting sleeve, and one end of the limiting sleeve is fixedly connected to a plurality of limiting rods, and the limiting rods are snap-fitted with limiting grooves provided on the protective sleeve.

[0010] As a preferred solution of the splicable dual-parallel photovoltaic cable protection structure of the present invention, wherein: an anti-skid pad is fixedly connected to the groove side of the arc plate, and a plurality of anti-skid grooves are fixedly provided on the anti-skid pad.

[0011] As a preferred solution of the splicable dual-parallel photovoltaic cable protection structure described in the present invention, a plurality of springs are fixedly connected between the two connecting rings, two sliding rods slidably connected to each other are arranged inside the springs, and the two sliding rods are respectively connected and fixed to the two connecting rings.

[0012] As a preferred solution of the splicable dual-parallel photovoltaic cable protection structure described in the present invention, the limiting sleeve is slidably arranged on the connecting sleeve, a fixing ring is fixedly connected to the connecting sleeve, and a plurality of springs are elastically connected between the limiting sleeve and the fixing ring.

[0013] As a preferred solution of the splicable dual-parallel photovoltaic cable protection structure described in the present invention, the limiting groove is in a "7"-shaped structure, and a positioning groove connected to the limiting groove is opened on the protection sleeve.

[0014] As a preferred solution of the splicable dual-parallel photovoltaic cable protection structure described in the present invention, the abutment ring is a T-shaped cylindrical structure, and a plurality of guide strips are fixed on the abutment ring, and a guide groove adapted to the guide strip is opened at one end of the connecting sleeve.

[0015] As a preferred solution of the splicable dual-parallel photovoltaic cable protection structure described in the present invention, a torsion assembly is provided in the protective sleeve, and the torsion assembly includes two sliding rings, and a plurality of sliding grooves are provided on the sliding rings. A sliding rail adapted to the sliding grooves is fixed in the protective sleeve, and a torsion spring is fixedly connected between one side of the sliding ring and an abutment ring.

[0016] As a preferred solution of the splicable dual-parallel photovoltaic cable protection structure described in the present invention, wherein: both ends of the protection sleeve are provided with an annular groove 1, a sealing ring is connected to the annular groove 1, and one end of the limiting sleeve is provided with an annular groove 2 adapted to the sealing ring.

[0017] As a preferred solution of the splicable dual-parallel photovoltaic cable protection structure described in the present invention, a sealing assembly is provided in the end of the connecting sleeve away from the protective sleeve, and the sealing assembly includes a rubber ring, one side of the rubber ring is abutted with a connecting ring, and the other side is provided with a connecting cover, the connecting cover is fixed with an external thread, and one end of the connecting sleeve is provided with an internal thread that matches the external thread.

[0018] As a preferred solution of the splicable dual-parallel photovoltaic cable protection structure described in the present invention, a plurality of positioning rods are fixedly connected to the side of the connection cover facing the rubber ring, and positioning holes matching the positioning rods are opened on the rubber ring.

[0019] Beneficial effects of the present invention:

[0020] 1. When the limiting sleeve is pushed toward one side of the protective sleeve, the connecting sleeve is plugged into the protective sleeve, and the abutting ring abuts against the connecting circular ring, so that the arc plates gather together to tightly clamp the cable. At the same time, after the limiting rod moves into the limiting groove, the second spring drives the limiting rod to abut against the positioning groove, so that the connecting sleeve and the protective sleeve are connected and fixed. Not only is the operation simple and the connection stable, but the production and assembly processes are simple and easy to use.

[0021] 2. The present invention uses the abutment ring to drive the cable fixing mechanism to fix the cable, while one side of the cable fixing mechanism squeezes the rubber ring so that the inner and outer sides of the rubber ring abut against the outer wall of the cable and the connecting sleeve respectively, which not only realizes the automatic filling of the gap between the connecting sleeve and the cable, but also facilitates the friction between the rubber ring and the cable to further improve the connection stability between the connecting sleeve and the cable.

[0022] 3. After the limiting rod abuts against the positioning groove, the present invention can not only prevent the protective sleeve from rotating due to external force, causing the connection between the protective sleeve and the limiting sleeve to be disconnected, but also the protective sleeve and the abutment ring cooperate to perform bidirectional engagement on the connecting sleeve, thereby improving the connection stability between the connecting sleeve and the protective sleeve and preventing the connection from loosening when the cable shakes. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0024] in:

[0025] Figure 1 It is a schematic diagram of the overall structure of the splicable double-parallel photovoltaic cable protection structure of the present invention.

[0026] Figure 2 It is a schematic diagram of the anatomical structure of the connecting sleeve and the protective sleeve of the splicable double-parallel photovoltaic cable protection structure of the present invention.

[0027] Figure 3 It is a schematic diagram of the disassembled structure of the connecting sleeve and the cable fixing mechanism of the splicable double-parallel photovoltaic cable protection structure of the present invention.

[0028] Figure 4 The present invention is a schematic diagram of the cable fixing mechanism structure of the splicable double-parallel photovoltaic cable protection structure.

[0029] Figure 5 The diagram is a schematic diagram of the arc plate and anti-slip pad structure of the splicable dual-parallel photovoltaic cable protection structure of the present invention.

[0030] Figure 6 It is a schematic diagram of the disassembly of the limiting sleeve and the protective sleeve structure of the splicable double-parallel photovoltaic cable protection structure of the present invention.

[0031] Figure 7 It is a schematic diagram of the disassembly of the protective sleeve and the torsion assembly structure of the splicable double-parallel photovoltaic cable protection structure of the present invention.

[0032] Figure 8 This is a schematic diagram of the disassembly of the sealing component structure of the splicable dual-parallel photovoltaic cable protection structure of the present invention.

[0033] Description of reference numerals:

[0034] 1. Connecting sleeve; 101. Fixing ring; 102. Guide groove; 103. Internal thread; 2. Cable fixing mechanism; 201. Connecting ring; 202. Arc plate; 203. Connecting rod; 204. Anti-skid pad; 205. Anti-skid pattern; 206. Spring 1; 207. Sliding rod; 3. Protective sleeve; 301. Abutting ring; 302. Limiting groove; 303. Positioning groove; 304. Guide strip; 30 5. Slide rail; 306. Annular groove one; 4. Limiting mechanism; 401. Limiting sleeve; 402. Limiting rod; 403. Spring two; 404. Annular groove two; 5. Torsion assembly; 501. Sliding ring; 502. Slide groove; 503. Torsion spring; 6. Sealing ring; 7. Sealing assembly; 701. Rubber ring; 702. Connecting cover; 703. External thread; 704. Positioning rod; 705. Positioning hole. DETAILED DESCRIPTION

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0036] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0037] Example 1

[0038] Reference Figure 1-6 , which is the first embodiment of the present invention, provides a splicable double-parallel photovoltaic cable protection structure, which includes two connecting sleeves 1, a retractable cable fixing mechanism 2 is arranged in the connecting sleeve 1, a protective sleeve 3 is sleeved between the two connecting sleeves 1, and abutment rings 301 are sleeved in both ends of the protective sleeve 3, the abutment ring 301 abuts and cooperates with the cable fixing mechanism 2, and a limiting mechanism 4 is slidably connected on the connecting sleeve 1, and the limiting mechanism 4 is snap-fitted with the protective sleeve 3. The connecting sleeve 1 is sleeved on the end of the double-parallel photovoltaic cable, and the protective sleeve 3 is sleeved on the core connection of the two sections of the double-parallel photovoltaic cable. When the two limiting mechanisms 4 are pushed close to each other, the abutment ring 301 drives the cable fixing mechanism 2 to extend to clamp and fix the cable, and at the same time, the limiting mechanism 4 moves on the connecting sleeve 1 to snap-fit ​​with the protective sleeve 3 to achieve quick connection.

[0039] The cable fixing mechanism 2 includes two connecting rings 201 that are slidably matched with the connecting sleeve 1. A plurality of arc plates 202 are arranged in a circular shape with equal intervals between the two connecting rings 201. A connecting rod 203 is hinged between the end of the arc plate 202 and the connecting ring 201. The center of the connecting ring 201 and the arc plate 202 are located on the same axis. When the two connecting rings 201 approach each other, the arc plate 202 is pushed to move by the connecting rod 203, and the arc plates 202 gather together and directly abut against the outer wall of the cable.

[0040] The limiting mechanism 4 includes a limiting sleeve 401, which is elastically connected to the connecting sleeve 1, and one end of the limiting sleeve 401 is fixedly connected to a plurality of limiting rods 402, and the limiting rods 402 are snap-fitted with the limiting grooves 302 provided on the protective sleeve 3. When the limiting sleeve 401 moves toward one side of the protective sleeve 3, the limiting rods 402 are snap-fitted with the limiting grooves 302, thereby realizing the connection and fixation between the limiting sleeve 401 and the protective sleeve 3.

[0041] In the above technical scheme, one end of the connecting sleeve 1 can be inserted into the interior of the protective sleeve 3. After the connecting sleeve 1 is sleeved in the protective sleeve 3, the two limiting sleeves 401 are pushed closer to each other. The limiting sleeve 301 can drive the connecting sleeve 1 to continue to move toward one side of the protective sleeve 3, so that the abutment ring 301 abuts against a connecting ring 201, so that the two connecting rings 201 are close to each other, and the arc plates 202 are gathered together to clamp and fix the cable. At the same time, the limiting sleeve 301 moves toward one side of the protective sleeve 3, so that the limiting rod 402 is clamped with the limiting groove 302, so that the protective sleeve 3 is connected and fixed to the connecting sleeve 1.

[0042] During actual use, an anti-skid pad 204 is fixedly connected to the groove side of the arc plate 202, and a plurality of anti-skid grooves 205 are fixed on the anti-skid pad 204. The protective pad 204 is made of flexible rubber material. The anti-skid pad 204 and the protective grooves 205 cooperate to increase the friction between the arc plate 202 and the cable when in contact, so that the cable fixing mechanism 2 is tightly connected to the dual-parallel photovoltaic cable.

[0043] A plurality of springs 206 are fixedly connected between the two connecting rings 201, and two sliding rods 207 slidably connected to each other are arranged inside the spring 206. The two sliding rods 207 are respectively connected and fixed to the two connecting rings 201, and the sliding rods 207 cooperate to make the two connecting rings 201 move axially. When there is no external force, the spring 206 drives the two connecting rings 201 away from each other. At this time, the size of the clamping cavity surrounded by each arc plate 202 is the largest, which is convenient for the passage of the cable.

[0044] The limiting groove 302 has a "7"-shaped structure, and a positioning groove 303 connected to the limiting groove 302 is opened on the protective sleeve 3. When the limiting sleeve 401 moves to one side of the protective sleeve 3, the limiting rod 402 first contacts the inclined surface of the limiting groove 302 to rotate the protective sleeve 3. Then, when the limiting rod 402 is located in the straight part of the limiting groove 302, the protective sleeve 3 rotates in the opposite direction, so that the limiting rod 402 and the limiting groove 302, the protective sleeve 3 and the limiting sleeve 401 are stably connected. When the limiting rod 402 is located in the positioning groove 303, the protective sleeve 3 cannot rotate, thereby improving the connection stability between the protective sleeve 3 and the limiting sleeve 401.

[0045] The limiting sleeve 401 is slidably arranged on the connecting sleeve 1, and a fixing ring 101 is fixedly connected to the connecting sleeve 1. A plurality of springs 403 are elastically connected between the limiting sleeve 401 and the fixing ring 101. When the limiting sleeve 401 moves toward the side of the protective sleeve 3, the spring 403 is compressed. When the limiting rod 402 is located in the straight part of the limiting groove 302, the spring 403 can be reset to drive the limiting sleeve 401 to move in the opposite direction for a certain distance, so that the limiting rod 402 can be stably abutted against the positioning groove 303.

[0046] The abutment ring 301 is a T-shaped cylindrical structure, and a plurality of guide strips 304 are fixed on the abutment ring 301. A guide groove 102 matched with the guide strip 304 is opened at one end of the connecting sleeve 1. When the end of the connecting sleeve 1 is sleeved on the inner wall of the protective sleeve 3, the guide strip 304 and the guide groove 102 are plugged into the abutment ring 301, and the protective sleeve 3 and the abutment ring 301 cooperate to realize bilateral bite of the connecting sleeve 1, thereby improving the connection stability and preventing the connection between the connecting sleeve 1 and the protective sleeve 3 from loosening or falling off when the cable is shaken by force.

[0047] During use, the two connecting sleeves 1 are respectively inserted into the ends of the two sections of double-parallel photovoltaic cables, and then the protective sleeve 3 is inserted into the end of one section of the double-parallel photovoltaic cable. After the wire cores of the cables at both ends are connected, the protective sleeve 3 is moved to be located at the wire core connection, and then the limiting sleeve 401 is pushed toward the side of the protective sleeve 3. The limiting sleeve 401 first drives the connecting sleeve 1 to move to the end and plug it into the protective sleeve 3, and then the abutment ring 301 abuts against the connecting ring 201. The two connecting rings 201 approach each other and drive the arc plate 202 to move through the connecting rod 203. The arc plates 202 gather together to make the anti-slip pad 204 in close contact with the outside of the cable.

[0048] At the same time, the limiting rod 402 moves along the inclined surface of the limiting groove 302 to drive the protective sleeve 3 to rotate. When the limiting rod 402 and the limiting groove 302 are straight, the protective sleeve 3 is rotated in the opposite direction, so that the spring 2 403 drives the limiting rod 402 to abut against the positioning groove 303. At this time, the protective sleeve 3 is stably connected with the limiting sleeve 301, so that the connecting sleeve 1 can clamp and fix the cable while connecting with the protective sleeve 3.

[0049] Example 2

[0050] Reference Figure 6-7 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that: a torsion assembly 5 is provided in the protective sleeve 3, and the torsion assembly 5 includes two sliding rings 501, and a plurality of sliding grooves 502 are provided on the sliding rings 501. A sliding rail 305 adapted to the sliding grooves 502 is fixedly provided in the protective sleeve 3, and a torsion spring 503 is fixedly connected between one side of the sliding ring 501 and an abutting ring 301.

[0051] In the above technical solution, when the limit rod 402 slides along the inclined surface of the limit groove 302 to drive the protective sleeve 3 to rotate, since the abutment ring 301 has been plugged into the connecting sleeve 1, the rotation of the protective sleeve 3 drives the torsion spring 503 to perform axial compression and accumulate force. Subsequently, when the limit rod 402 is located in the straight part of the limit groove 302, the torsion spring 503 resets and drives the protective sleeve 3 to rotate in the opposite direction, so that the positioning groove 303 rotates to contact the limit rod 402.

[0052] It is understandable that when the torsion spring 503 is compressed to store force and released to restore, its axial length changes, and the sliding ring 501 and the sliding rail 503 are slidably matched so as to be able to adapt to the length change of the torsion spring 503 .

[0053] The remaining structures are the same as those of Example 1.

[0054] Example 3

[0055] Reference Figure 6 , which is the third embodiment of the present invention. This embodiment is different from the second embodiment in that both ends of the protective sleeve 3 are provided with an annular groove 306, a sealing ring 6 is connected to the annular groove 306, and one end of the limiting sleeve 401 is provided with an annular groove 404 adapted to the sealing ring 6.

[0056] In the above technical solution, the sealing ring 6 is made of flexible rubber material, and the outer diameter of the sealing ring 6 is larger than the inner diameter of the annular groove 404. When the limiting rod 402 abuts against the positioning groove 303, the sealing ring 6 is located in the annular groove 404 and abuts against the inner wall of the annular groove 404, thereby realizing the sealing between the limiting sleeve 401 and the protective sleeve 3, achieving a waterproof and dustproof effect, and meeting the adjustment requirements for outdoor use.

[0057] The remaining structures are the same as those of Example 1.

[0058] Example 4

[0059] Reference Figure 3 and Figure 8 , which is the fourth embodiment of the present invention. This embodiment is different from the third embodiment in that: a sealing component 7 is provided in the end of the connecting sleeve 1 away from the protective sleeve 3, and the sealing component 7 includes a rubber ring 701. One side of the rubber ring 701 is in abutment with a connecting ring 201, and the other side is provided with a connecting cover 702. The connecting cover 702 is fixed with an external thread 703. One end of the connecting sleeve 1 is provided with an internal thread 103 that matches the external thread 703.

[0060] In the above technical solution, after the connecting cover 702 is connected to one end of the connecting sleeve 1, the rubber ring 701 is limited. When the cable fixing mechanism 2 is abutted by the abutting ring 301, a connecting ring 201 close to the rubber ring 701 squeezes the rubber ring 701, so that the rubber ring 701 is compressed in the axial direction and stretched in the radial direction, so that the inner and outer sides of the rubber ring 701 are tightly abutted against the outer wall of the cable and the inner wall of the connecting sleeve 1 respectively, so as to realize waterproof and dustproof of the connection between the connecting sleeve 3 and the cable, and at the same time, the friction between the rubber ring 701 and the cable can further improve the connection stability between the connecting sleeve 1 and the cable.

[0061] It can be understood that a plurality of positioning rods 704 are fixedly connected to the side of the connecting cover 702 facing the rubber ring 701, and a positioning hole 705 matched with the positioning rod 704 is opened on the rubber ring 701, and the inner diameter of the positioning hole 705 is larger than the outer diameter of the positioning rod 704. The cooperation between the rubber ring 701 and the positioning rod 704 enables the rubber ring 701 to stretch evenly in the radial direction when squeezed, so that the inner and outer sides of the rubber ring 701 are in full contact with the outer wall of the cable and the connecting sleeve 1 respectively.

[0062] The inner cavity sizes of the connecting ring 201, the abutting ring 301, the sliding block 501, the rubber ring 701 and the connecting cover 702 are all larger than the outer diameter of the cable, so that the cable can easily pass through the inner cavity during installation.

[0063] In addition, the connecting sleeve 1, the protective sleeve 3, and the limiting sleeve 401 can all be made by injection molding, and the other structures connected thereto do not require any extra connecting materials or tools, which simplifies the production and assembly processes and is conducive to popularization and use.

[0064] The remaining structures are the same as those of Example 1.

[0065] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A splicable double-parallel photovoltaic cable protection structure, characterized by: The invention comprises two connecting sleeves (1), each of which is provided with a retractable cable fixing mechanism (2), a protective sleeve (3) being sleeved between the two connecting sleeves (1), abutment rings (301) being sleeved at both ends of the protective sleeve (3), the abutment rings (301) being in abutment with the cable fixing mechanism (2), and a limiting mechanism (4) being slidably connected to the connecting sleeve (1), the limiting mechanism (4) being in a snap-fitting manner with the protective sleeve (3); The cable fixing mechanism (2) comprises two connecting rings (201) that are slidably matched with the connecting sleeve (1), a plurality of arc-shaped plates (202) are arranged in a circular shape and at equal intervals between the two connecting rings (201), and a connecting rod (203) is hinged between the ends of the arc-shaped plates (202) and the connecting rings (201); The limiting mechanism (4) comprises a limiting sleeve (401), the limiting sleeve (401) is elastically connected to the connecting sleeve (1), and one end of the limiting sleeve (401) is fixedly connected to a plurality of limiting rods (402), and the limiting rods (402) are snap-fitted with limiting grooves (302) provided on the protective sleeve (3).

2. The splicable dual-parallel photovoltaic cable protection structure according to claim 1 is characterized in that: An anti-skid pad (204) is fixedly connected to the groove side of the arc-shaped plate (202), and a plurality of anti-skid grooves (205) are fixedly provided on the anti-skid pad (204).

3. The splicable dual-parallel photovoltaic cable protection structure according to claim 1 is characterized in that: A plurality of springs (206) are fixedly connected between the two connecting rings (201), two sliding rods (207) slidably connected to each other are arranged inside the springs (206), and the two sliding rods (207) are respectively fixedly connected to the two connecting rings (201).

4. The splicable dual-parallel photovoltaic cable protection structure according to claim 1 is characterized in that: The limiting sleeve (401) is slidably arranged on the connecting sleeve (1), a fixing ring (101) is fixedly connected to the connecting sleeve (1), and a plurality of springs (403) are elastically connected between the limiting sleeve (401) and the fixing ring (101).

5. The splicable dual-parallel photovoltaic cable protection structure according to claim 1 is characterized in that: The limiting groove (302) is in a "7"-shaped structure, and the protective sleeve (3) is provided with a positioning groove (303) which is in communication with the limiting groove (302).

6. The splicable dual-parallel photovoltaic cable protection structure according to claim 1 is characterized in that: The abutment ring (301) is of a T-shaped cylindrical structure, and a plurality of guide bars (304) are fixedly provided on the abutment ring (301). A guide groove (102) adapted to the guide bar (304) is provided at one end of the connection sleeve (1).

7. The splicable dual-parallel photovoltaic cable protection structure according to claim 1 is characterized in that: A torsion assembly (5) is arranged inside the protective sleeve (3), and the torsion assembly (5) comprises two sliding rings (501), a plurality of sliding grooves (502) are arranged on the sliding rings (501), a sliding rail (305) adapted to the sliding grooves (502) is fixedly arranged inside the protective sleeve (3), and a torsion spring (503) is fixedly connected between one side of the sliding ring (501) and an abutting ring (301).

8. The splicable dual-parallel photovoltaic cable protection structure according to claim 1, characterized in that: Both ends of the protective sleeve (3) are provided with an annular groove (306), a sealing ring (6) is connected to the annular groove (306), and one end of the limiting sleeve (401) is provided with an annular groove (404) adapted to the sealing ring (6).

9. The splicable dual-parallel photovoltaic cable protection structure according to claim 1, characterized in that: A sealing assembly (7) is provided in one end of the connecting sleeve (1) away from the protective sleeve (3), and the sealing assembly (7) comprises a rubber ring (701). One side of the rubber ring (701) is in abutment with a connecting ring (201), and the other side is provided with a connecting cover (702). An external thread (703) is fixedly provided on the connecting cover (702). One end of the connecting sleeve (1) is provided with an internal thread (103) that matches the external thread (703).

10. The splicable dual-parallel photovoltaic cable protection structure according to claim 9, characterized in that: A plurality of positioning rods (704) are fixedly connected to one side of the connection cover (702) facing the rubber ring (701), and positioning holes (705) matching the positioning rods (704) are provided on the rubber ring (701).

Images