An articulated joint structure for a modular wire conduit

Abstract

The present invention belongs to the field of line laying, and discloses a movable joint structure of a modular wire casing, which includes two casings and a connecting cylinder. First openings are provided at both the top and bottom of the connecting cylinder, and an alignment mechanism is fixedly arranged inside the connecting cylinder; the alignment mechanism includes a plurality of trapezoidal blocks, and a second opening is provided inside the rotating shaft. For this movable joint structure of the modular wire casing, by setting the alignment mechanism, the connections of the two casings can be aligned and neat, avoiding the situation where the movable end of the wire abuts against the wall thickness of the casing, enabling the wire to be installed normally, and preventing deformation of the connection of the casings. Then, a limiting mechanism is set to ensure that the pipe body and the pipe end are coaxial and the other end will not tip over, preventing breakage at the connection of the two casings, reducing the labor intensity of workers, improving the work process, and ensuring the benefits of the construction company.

Description

Technical Field

[0001] The present invention belongs to the technical field of line laying, and specifically relates to a movable joint structure of a modular wire casing. Background Art

[0002] A wire casing refers to a pipe that is embedded in a building during house construction for facilitating the passing of wires. Such pipes are available in plastic and metal types. However, considering cost issues, the commonly used ones are plastic pipes. These casings are all embedded in walls or cement slag. Considering the length of the wires and the ease of wire installation, the casings for protecting the wires are grouped in multiples to complete the installation of the wires.

[0003] In the currently used movable joint structure of modular wire casings, during the installation process, first, an installation groove is opened on the ground, then the casings are embedded in the installation groove one by one, and finally the wires are passed through the casings one by one. However, the current movable joint structure has the following defects:

[0004] ① Since the casing has a certain wall thickness and the inner plane of the installation groove opened by the worker on the ground is uneven, when laying and connecting the casings flat, the problem that the docking joints of two casings cannot be aligned often occurs. As a result, when the wire extends into the casing, the movable end of the wire easily touches the wall thickness of the casing, the wire winds inside the casing, and the wire cannot penetrate the casing as usual, affecting the installation efficiency. At the same time, the worker cannot accurately control the force when connecting the casings, resulting in frequent deformation at the connection of the casings. ② After the two casings are connected, the existing installation technology does not limit the pipe body, resulting in the other end of the casing automatically sagging under the influence of gravity. As a result, the two just-connected casings crack, requiring the worker to rework, which not only increases the labor intensity of the worker but also prolongs the project time, bringing reputation and economic losses to the construction company. Summary of the Invention

[0005] The purpose of the present invention is to provide a movable joint structure of a modular wire casing to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A movable joint structure of a modular wire casing includes two casings and a connecting cylinder. The connecting cylinder is sleeved outside the two casings. First openings are provided at the top and bottom of the connecting cylinder. An alignment mechanism is fixedly arranged inside the connecting cylinder. The alignment mechanism passes through the connecting cylinder and extends to the outside of the connecting cylinder. A limiting mechanism is fixedly arranged inside the connecting cylinder;

[0007] The alignment mechanism includes a plurality of trapezoidal blocks, and the plurality of trapezoidal blocks are all arranged inside the first opening. The inner ends of the trapezoidal blocks are movably connected to the inner wall of the first opening through rotating shafts. A second opening is formed inside the rotating shaft. A first T-shaped chute is formed on one side wall inside the second opening. A first T-shaped slider is arranged inside the first T-shaped chute. The outer wall of the first T-shaped slider is in contact with the inner wall of the first T-shaped chute. The first T-shaped slider and the first T-shaped chute form a sliding structure. A first spring is fixedly arranged between one end of the first T-shaped slider and one side wall inside the first T-shaped chute. A push rod is fixedly arranged on one side wall of the first T-shaped slider. The push rod is arranged inside the second opening. The outer wall of the push rod is in contact with the inner wall of the second opening. A second spring is fixedly arranged between one side wall of the trapezoidal block and one side wall inside the first opening. A sleeve is fixedly sleeved at the bottom of the second spring. The sleeve is arranged on one side of the trapezoidal block and is fixedly connected to the inner wall of the first opening. Two rings are sleeved outside the connecting cylinder. The two rings are respectively arranged on both sides of the first opening. The two first openings are both threadedly connected to the connecting cylinder and have opposite thread directions. A housing is arranged on the top of the connecting cylinder. The housing is arranged on the tops of the two trapezoidal blocks. A second T-shaped chute is formed at the bottom of the housing. Two second T-shaped sliders are arranged inside the second T-shaped chute. The bottoms of the two second T-shaped sliders both pass through the second T-shaped chute and extend to the bottom of the housing. The outer walls of the second T-shaped sliders are in contact with the inner wall of the second T-shaped chute. The bottoms of the second T-shaped sliders are inserted and connected to the tops of the trapezoidal blocks through positioning pins. A bubble level is fixedly inlaid on the top of the housing. A threaded rod is arranged on the top of the connecting cylinder. The threaded rod is arranged at the rear of the housing and is threadedly connected to the connecting cylinder. Two mirrors are fixedly arranged on the top of the threaded rod. The two mirrors are symmetric about the vertical center line of the threaded rod.

[0008] Preferably, the limiting mechanism includes a plurality of hollow columns, and the plurality of hollow columns are all fixedly arranged inside the connecting cylinder. The hollow columns are symmetric about the vertical center line of the connecting cylinder. A plurality of heat dissipation channels are formed inside the connecting cylinder. The plurality of heat dissipation channels are respectively arranged outside the plurality of hollow columns. The inside of the hollow columns is communicated with the inside of the heat dissipation channels. An extrusion block is arranged inside the hollow column. One end of the extrusion block passes through the hollow column and extends into the inner wall of the connecting cylinder. The outer wall of the extrusion block is in contact with the inner wall of the hollow column and the inner wall of the connecting cylinder. One end of the extrusion block is on the same horizontal plane as the inner wall of the connecting cylinder. A metal rod is arranged at the other end of the extrusion block. The metal rod is fixedly arranged inside the hollow column. An airbag is fixedly sleeved outside the metal rod. The outer wall of the airbag is in contact with the other end of the extrusion block and the inner wall of the hollow column. A plurality of metal wires are fixedly arranged between the metal rod and the inner wall of the airbag.

[0009] Preferably, a plurality of third springs are provided inside the hollow column, and the plurality of third springs are all arranged outside the airbag. Two ends of each third spring are fixedly connected to the other end of the extrusion block and one side wall inside the heat dissipation channel respectively.

[0010] Preferably, the inner wall of the connecting cylinder is sprayed with anti-corrosion paint.

[0011] Preferably, a plurality of bumps are processed on the outer side of the ring body.

[0012] Preferably, a sealing door is provided on the front side of the connecting cylinder. A storage cavity is provided inside the sealing door. The front side of the storage cavity and the front side of the connecting cylinder are on the same horizontal plane. The storage cavity is movably connected to one side wall inside the sealing door through a hinge.

[0013] Preferably, the outer end of the trapezoidal block body passes through the first opening and extends to the outside of the connecting cylinder. The trapezoidal block body is symmetric about the vertical center line of the first opening.

[0014] Preferably, one end of the ejector rod passes through the second opening and extends into the first opening.

[0015] Preferably, the second T-shaped chute and the second T-shaped slider are both arranged at the rear sides of the two trapezoidal block bodies.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. For the movable joint structure of the modular wire casing, by inserting two casings into the connecting cylinder, then rotating the ring body, the ring body presses against the trapezoidal block body, and then the trapezoidal block body drives the first T-shaped block body to contract into the first opening. During this process, it is ensured that the bubble level is always in a balanced state. At this time, the ejector rod has already contacted the surface of the casing. Then, under the elastic force of the first spring, the ejector rod tightly presses the casing. When observing a depression on the surface of the casing in the mirror, stop rotating the ring. The connections of the two casings are aligned and neat, avoiding the situation that the movable end of the wire touches the wall thickness of the casing. The wire can be installed normally, and the connection of the casings will not be deformed.

[0018] 2. For the movable joint structure of the modular wire casing, by connecting the wire to the power supply, the wire generates heat during power generation. The heat penetrates through the casing and enters the heat dissipation channel. Then the heat heats the surface of the airbag. In addition, the heat also heats the hollow column. The hollow column transfers the heat to the waste metal rod, and then the metal rod transfers the heat to the metal wire. The metal rod and the metal wire cooperate to heat the airbag. The inside and outside of the airbag are heated simultaneously and then expand rapidly. Then the extrusion block presses tightly against the casing body under the extrusion of the airbag. The casing body and the casing end are coaxial, and the other end will not tilt. The breakage at the connection of the two casings is eliminated, the labor intensity of workers is reduced, the working process is improved, and the benefits of the construction company are ensured.

[0019] 3. The movable joint structure of the modular wire casing can reduce the probability of the casing being corroded, extend the service life of the casing, and reduce the probability of hand slippage when workers rotate the ring body by spraying anti-corrosion paint on the inner wall of the connecting cylinder and then processing a plurality of bumps on the outer surface of the ring body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the overall structure of the casing of the present invention when not fixed;

[0021] Figure 2 Schematic diagram of the overall structure of the casing of the present invention after being fixed;

[0022] Figure 3 Cross-sectional view of the overall structure of the casing of the present invention when not fixed;

[0023] Figure 4 Schematic cross-sectional view of the overall structure of the present invention;

[0024] Figure 5 Stereogram of the trapezoidal block of the present invention;

[0025] Figure 6 Overall structure of the present invention Figure 3 Enlarged view at A in the figure;

[0026] Figure 7 Overall structure of the present invention Figure 3 Enlarged view at B in the figure;

[0027] Figure 8 Overall structure of the present invention Figure 6 Enlarged view at C in the figure;

[0028] Figure 9 Overall structure of the present invention Figure 7 Enlarged view at D in the figure.

[0029] In the figure: 1. Casing; 2. Connecting cylinder; 3. Opening; 4. Trapezoidal block; 5. Rotating shaft; 6. Opening; 7. First T-shaped chute; 8. First T-shaped slider; 9. First spring; 10. Thrust rod; 11. Second spring; 12. Sleeve; 13. Ring body; 14. Housing; 15. Second T-shaped chute; 16. Second T-shaped slider; 17. Positioning pin; 18. Bubble level; 19. Threaded rod; 20. Mirror; 21. Hollow column; 22. Heat dissipation channel; 23. Extrusion block; 24. Airbag; 25. Metal rod; 26. Metal wire; 27. Third spring; 28. Anti-corrosion paint; 29. Bump; 30. Storage cavity; 31. Sealing door. DETAILED DESCRIPTION OF THE INVENTION

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] As Figures 1 to 6 and Figure 8 shown, in the embodiment of the present invention, a movable joint structure of a modular wire casing includes two sleeves 1 and a connecting cylinder 2. The connecting cylinder 2 is sleeved outside the two sleeves 1. First openings 3 are provided at both the top and the bottom of the connecting cylinder 2. An alignment mechanism is fixedly arranged inside the connecting cylinder 2. The alignment mechanism passes through the connecting cylinder 2 and extends to the outside of the connecting cylinder 2. A limiting mechanism is fixedly arranged inside the connecting cylinder 2;

[0032] The alignment mechanism includes a plurality of trapezoidal blocks 4. A plurality of the trapezoidal blocks 4 are all arranged inside the first opening 3. The inner ends of the trapezoidal blocks 4 are movably connected to the inner wall of the first opening 3 through a rotating shaft 5. A second opening 6 is formed inside the rotating shaft 5. A first T-shaped chute 7 is formed on one side wall inside the second opening 6. A first T-shaped slider 8 is arranged inside the first T-shaped chute 7. The outer wall of the first T-shaped slider 8 is in contact with the inner wall of the first T-shaped chute 7. The first T-shaped slider 8 and the first T-shaped chute 7 form a sliding structure. A first spring 9 is fixedly arranged between one end of the first T-shaped slider 8 and one side wall inside the first T-shaped chute 7. A push rod 10 is fixedly arranged on one side wall of the first T-shaped slider 8. The push rod 10 is arranged inside the second opening 6. The outer wall of the push rod 10 is in contact with the inner wall of the second opening 6. A second spring 11 is fixedly arranged between one side wall of the trapezoidal block 4 and one side wall inside the first opening 3. A sleeve 12 is fixedly sleeved at the bottom of the second spring 11. The sleeve 12 is arranged on one side of the trapezoidal block 4 and is fixedly connected to one side wall inside the first opening 3. Two rings 13 are sleeved outside the connecting cylinder 2. The two rings 13 are respectively arranged on both sides of the first opening 3. The two first openings 3 are both threadedly connected to the connecting cylinder 2 and have opposite thread directions. A housing 14 is arranged at the top of the connecting cylinder 2. The housing 14 is arranged on the top of the two trapezoidal blocks 4. A second T-shaped chute 15 is formed at the bottom of the housing 14. Two second T-shaped sliders 16 are arranged inside the second T-shaped chute 15. The bottoms of the two second T-shaped sliders 16 both pass through the second T-shaped chute 15 and extend to the bottom of the housing 14. The outer wall of the second T-shaped slider 16 is in contact with the inner wall of the second T-shaped chute 15. The bottom of the second T-shaped slider 16 is inserted and connected to the top of the trapezoidal block 4 through a positioning pin 17. A bubble level 18 is fixedly inlaid at the top of the housing 14. A threaded rod 19 is arranged at the top of the connecting cylinder 2. The threaded rod 19 is arranged at the rear side of the housing 14 and is threadedly connected to the connecting cylinder 2. Two mirrors 20 are fixedly arranged at the top of the threaded rod 19. The two mirrors 20 are symmetric about the vertical center line of the threaded rod 19. A sealing door 31 is formed at the front side of the connecting cylinder 2. A storage cavity 30 is arranged inside the sealing door 31. The front side of the storage cavity 30 and the front side of the connecting cylinder 2 are at the same horizontal plane. The storage cavity 30 is movably connected to one side wall inside the sealing door 31 through a hinge. The outer ends of the trapezoidal blocks 4 pass through the first opening 3 and extend to the outside of the connecting cylinder 2. The trapezoidal blocks 4 are symmetric about the vertical center line of the first opening 3. One end of the push rod 10 passes through the second opening 6 and extends to the inside of the first opening 3. The second T-shaped chute 15 and the second T-shaped slider 16 are both arranged at the rear sides of the two trapezoidal blocks 4. By providing the storage cavity 30, a storage space can be provided for the removed threaded rod 19, mirrors 20 and housing 14. The connection parts of the two sleeves 1 can be aligned and fixed, avoiding the situation that the movable end of the wire abuts against the wall thickness of the sleeve 1, enabling the wire to be installed normally, and the connection of the sleeve 1 will not be deformed.

[0033] Among them, the inner wall of the connecting cylinder 2 is sprayed with an anti-corrosion paint 28. By setting the anti-corrosion paint 28, the probability of the casing 1 being corroded can be reduced, and the service life of the casing 1 can be extended.

[0034] Among them, a plurality of bumps 29 are processed on the outer side of the ring body 13. By setting the bumps 29, the friction between the hand and the ring body 13 can be increased, and the probability of the worker's hand slipping when rotating the ring body 13 can be reduced.

[0035] Working principle:

[0036] In the initial state, the top of the second spring 11 is in a retracted state. Then, the plurality of trapezoidal blocks 4 are pulled by the second spring 11 and all open outward from the first opening 3. Then, the mirror 20 reflects the outer surface of the casing 1 in real time. When the present invention is put into actual use, first, the two casings 1 are inserted into the connecting cylinder 2. At the same time, it is ensured that the lengths of the two casings 1 extending into the connecting cylinder 2 are the same. Then, the worker rotates the ring body 13, and the two ring bodies 13 both move towards the center of the first opening 3. During this process, the ring body 13 contacts the trapezoidal block 4, and then the trapezoidal block 4 drives the second T-shaped slider 16 to retract into the first opening 3 through the positioning pin 17. The second T-shaped slider 16 moves along the second T-shaped chute 15. In order to ensure that the two ring bodies 13 move the same distance, the worker only needs to keep the bubble in the bubble level 18 always at the center position of the bubble level 18. Then, the trapezoidal block 4 drives the ejector rod 10 to move. Since the length of the ejector rod 10 is longer than that of the trapezoidal block 4, the ejector rod 10 first contacts the outer surface of the casing 1, and then continues to rotate the ring body 13. The ejector rod 10 cannot move downward any further. Then, the ejector rod 10 moves outward from the trapezoidal block 4 through the first T-shaped slider 8, and the first spring 9 is compressed. Similarly, the elastic force of the first spring 9 also enables the ejector rod 10 to tightly press against the casing 1. When a depression appears on the outer surface of the casing 1 in the mirror 20, the rotation of the ring body 13 can be stopped. The connections of the two casings 1 are aligned and neat, avoiding the situation where the movable end of the wire touches the wall thickness of the casing 1, so that the wire can be installed normally, and the connection of the casing 1 will not be deformed.

[0037] Such as Figure 3 , Figure 7 and Figure 9As shown in the figure, in the embodiment of the present invention, an articulated joint structure of a modular wire casing further includes a limiting mechanism. The limiting mechanism includes a plurality of hollow columns 21, and the plurality of hollow columns 21 are all fixedly arranged inside the connecting cylinder 2. The hollow columns 21 are symmetric about the vertical center line of the connecting cylinder 2. A plurality of heat dissipation channels 22 are provided inside the connecting cylinder 2, and the plurality of heat dissipation channels 22 are respectively arranged outside the plurality of hollow columns 21. The inside of the hollow column 21 communicates with the inside of the heat dissipation channel 22. An extrusion block 23 is arranged inside the hollow column 21. One end of the extrusion block 23 passes through the hollow column 21 and extends into the inner wall of the connecting cylinder 2. The outer wall of the extrusion block 23 is in contact with the inner wall of the hollow column 21 and the inner wall of the connecting cylinder 2. One end of the extrusion block 23 is on the same horizontal plane as the inner wall of the connecting cylinder 2. A metal rod 25 is arranged at the other end of the extrusion block 23. The metal rod 25 is fixedly arranged inside the hollow column 21. An airbag 24 is fixedly sleeved outside the metal rod 25. The outer wall of the airbag 24 is in contact with the other end of the extrusion block 23 and the inner wall of the hollow column 21. A plurality of metal wires 26 are fixedly arranged between the metal rod 25 and the inner wall of the airbag 24. The body of the casing 1 can be fixed and limited, so that the body and the pipe end are coaxial, reducing the probability of breakage at the connection of the two casings 1.

[0038] Among them, a plurality of third springs 27 are arranged inside the hollow column 21, and the plurality of third springs 27 are all arranged outside the airbag 24. Two ends of the third spring 27 are respectively fixedly connected to the other end of the extrusion block 23 and one side wall inside the heat dissipation channel 22. Without external influence, the extrusion block 23 can always shrink into the connecting cylinder 2 to ensure that the casing 1 is not blocked when entering the connecting cylinder 2.

[0039] Working principle:

[0040] In the initial state, the extrusion block 23 is pulled by a plurality of third springs 27 and always shrinks into the connecting cylinder 2, which also facilitates the casing 1 not to be blocked when entering the connecting cylinder 2. When the present invention is put into actual use, the wire is electrified and generates heat, and the casing 1 generates heat. Then the heat is dissipated to the outside through the heat dissipation channel 22, which can avoid the excess heat in the connecting cylinder 2 and prevent the casing 1 from spontaneous combustion. When the heat passes through the heat dissipation channel 22, the heat first heats the outer surface of the airbag 24, then heats the hollow column 21, and then the hollow column 21 transfers its own heat to the metal rod 25. After the metal rod 25 is heated, it transfers the heat to the metal wire 26. The metal wire 26 and the metal rod 25 cooperate to heat the inner surface of the airbag 24, causing the airbag 24 to expand rapidly. Then the airbag 24 pushes the extrusion block 23 to move towards the outer surface of the casing 1, and the extrusion block 23 clamps the body of the casing 1. The body and the pipe end are coaxial, and the other end will not tilt, preventing breakage at the connection of the two casings 1, reducing the labor intensity of workers, improving the work process, and ensuring the benefits of the construction company.

[0041] It should be noted that in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An articulated joint structure for a modular wire casing, comprising two casings (1) and a connecting cylinder (2), characterized in that: The connecting cylinder (2) is sleeved outside the two sleeves (1). First openings (3) are provided at both the top and bottom of the connecting cylinder (2). An alignment mechanism is fixedly arranged inside the connecting cylinder (2). The alignment mechanism passes through the connecting cylinder (2) and extends outside the connecting cylinder (2). A limiting mechanism is fixedly arranged inside the connecting cylinder (2); The alignment mechanism includes a plurality of trapezoidal blocks (4). A plurality of the trapezoidal blocks (4) are all arranged inside the first opening (3). The inner end of the trapezoidal block (4) is movably connected to the inner wall of the first opening (3) through a rotating shaft (5). A second opening (6) is provided inside the rotating shaft (5). A first T-shaped sliding groove (7) is provided on one side wall inside the second opening (6). A first T-shaped slider (8) is arranged inside the first T-shaped sliding groove (7). The outer wall of the first T-shaped slider (8) is in contact with the inner wall of the first T-shaped sliding groove (7). The first T-shaped slider (8) and the first T-shaped sliding groove (7) form a sliding structure. A first spring (9) is fixedly arranged between one end of the first T-shaped slider (8) and one side wall inside the first T-shaped sliding groove (7). A push rod (10) is fixedly arranged on one side wall of the first T-shaped slider (8). The push rod (10) is arranged inside the second opening (6). The outer wall of the push rod (10) is in contact with the inner wall of the second opening (6). A second spring (11) is fixedly arranged between one side wall of the trapezoidal block (4) and one side wall inside the first opening (3). A sleeve (12) is fixedly sleeved at the bottom of the second spring (11). The sleeve (12) is arranged on one side of the trapezoidal block (4) and is fixedly connected to one side wall inside the first opening (3). Two annular bodies (13) are sleeved outside the connecting cylinder (2). The two annular bodies (13) are respectively arranged on both sides of the first opening (3). Both of the first openings (3) are threadedly connected to the connecting cylinder (2) and have opposite thread directions. A housing (14) is provided at the top of the connecting cylinder (2). The housing (14) is arranged on the top of the two trapezoidal blocks (4). A second T-shaped sliding groove (15) is provided at the bottom of the housing (14). Two second T-shaped sliders (16) are arranged inside the second T-shaped sliding groove (15). The bottoms of the two second T-shaped sliders (16) both pass through the second T-shaped sliding groove (15) and extend to the bottom of the housing (14). The outer wall of the second T-shaped slider (16) is in contact with the inner wall of the second T-shaped sliding groove (15). The bottom of the second T-shaped slider (16) is inserted and connected to the top of the trapezoidal block (4) through a positioning pin (17). A bubble level (18) is fixedly inlaid at the top of the housing (14). A threaded rod (19) is provided at the top of the connecting cylinder (2). The threaded rod (19) is arranged at the rear side of the housing (14) and is threadedly connected to the connecting cylinder (2). Two mirrors (20) are fixedly arranged at the top of the threaded rod (19). The two mirrors (20) are symmetrical about the vertical center line of the threaded rod (19); The limiting mechanism includes a plurality of hollow columns (21). A plurality of the hollow columns (21) are all fixedly arranged inside the connecting cylinder (2). The hollow columns (21) are symmetric about the vertical center line of the connecting cylinder (2). A plurality of heat dissipation channels (22) are arranged inside the connecting cylinder (2). A plurality of the heat dissipation channels (22) are respectively arranged outside a plurality of the hollow columns (21). The inside of the hollow column (21) is communicated with the inside of the heat dissipation channel (22). An extrusion block (23) is arranged inside the hollow column (21). One end of the extrusion block (23) passes through the hollow column (21) and extends into the inner wall of the connecting cylinder (2). The outer wall of the extrusion block (23) is in contact with the inner wall of the hollow column (21) and the inner wall of the connecting cylinder (2). One end of the extrusion block (23) is on the same horizontal plane as the inner wall of the connecting cylinder (2). A metal rod (25) is arranged at the other end of the extrusion block (23). The metal rod (25) is fixedly arranged inside the hollow column (21). An airbag (24) is fixedly sleeved outside the metal rod (25). The outer wall of the airbag (24) is in contact with the other end of the extrusion block (23) and the inner wall of the hollow column (21). A plurality of metal wires (26) are fixedly arranged between the metal rod (25) and the inner wall of the airbag (24). A plurality of third springs (27) are arranged inside the hollow column (21). A plurality of the third springs (27) are all arranged outside the airbag (24). Two ends of the third spring (27) are respectively fixedly connected to the other end of the extrusion block (23) and one side wall inside the heat dissipation channel (22). The inner wall of the connecting cylinder (2) is sprayed with an anti-corrosion paint (28). A plurality of bumps (29) are processed on the outer side of the ring body (13).

2. The movable joint structure of a modular wire casing according to claim 1, characterized in that: A sealing door (31) is arranged on the front side of the connecting cylinder (2). A storage cavity (30) is arranged inside the sealing door (31). The front side of the storage cavity (30) is on the same horizontal plane as the front side of the connecting cylinder (2). The storage cavity (30) is movably connected to one side wall inside the sealing door (31) through a hinge.

3. The movable joint structure of a modular wire casing according to claim 1, characterized in that: The outer end of the trapezoidal block (4) passes through the first opening (3) and extends to the outside of the connecting cylinder (2). The trapezoidal block (4) is symmetric about the vertical center line of the first opening (3).

4. The movable joint structure of a modular wire sleeve according to claim 1, characterized in that: One end of the ejector rod (10) passes through the second opening (6) and extends into the first opening (3).

5. The movable joint structure of a modular wire casing according to claim 1, characterized in that: The second T-shaped sliding groove (15) and the second T-shaped sliding block (16) are both arranged at the rear sides of the two trapezoidal blocks (4).

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