A rotary quick-release lamp

Abstract

The present invention relates to the technical field of lamps, and particularly relates to a rotary quick-release lamp, comprising: a mounting ring and a lamp body, wherein a plurality of mounting holes are formed in the side wall of the mounting ring; a clamping mechanism, the clamping mechanism comprises a plurality of vertical grooves formed in the inner side wall of the mounting ring, a plurality of first arc grooves corresponding to and communicating with the plurality of vertical grooves are formed in the inner side wall of the mounting ring, a plurality of clamping columns corresponding to the plurality of vertical grooves one by one are fixedly connected to the side wall of the lamp body, a plurality of first grooves corresponding to the plurality of clamping columns one by one are formed in the lamp body, and a first rod is hermetically and slidably connected to the inner wall of the first groove. The present invention is provided with a clamping mechanism. The lamp body is rotated counterclockwise, so that the plurality of clamping columns respectively enter the plurality of first arc grooves, and the installation of the mounting ring and the lamp body is completed. The operation is simple and convenient for later disassembly. And at this time, the lamp body can rotate through the plurality of clamping columns in the plurality of first arc grooves, and the wiring in the lamp body can be arranged according to the actual situation.

Description

Technical Field

[0001] The present invention relates to the technical field of lamps, and particularly relates to a rotary quick-release lamp. Background Art

[0002] Lamps are a general term for lighting tools, including all components required for fixing and protecting the light source except the light source, as well as the line accessories necessary for connecting to the power supply.

[0003] Currently, during the use of lamps, they are all connected to the lamp mounting base through screws. Although this mounting method has a simple structure, for the installation of a large number of lamps, this mounting method is cumbersome, and the position of the installed lamp is fixed, and it cannot be finely adjusted, resulting in a fixed wiring path, which is inconvenient for subsequent wiring of the lamps according to the actual situation. Moreover, when the lamp is damaged and needs to be replaced later, the screws need to be disassembled and reinstalled at this time, resulting in inconvenient disassembly of the lamp and affecting the use effect of the lamp. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art, and to propose a rotary quick-release lamp.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A rotary quick-release lamp, comprising:

[0007] An installation ring and a lamp body, and a plurality of installation holes are provided on the side wall of the installation ring;

[0008] A clamping mechanism, the clamping mechanism includes a plurality of vertical grooves opened on the inner side wall of the installation ring, a plurality of first arc grooves corresponding to and communicating with the plurality of vertical grooves are opened on the inner side wall of the installation ring, a plurality of clamping columns corresponding to the plurality of vertical grooves are fixedly connected to the side wall of the lamp body, a plurality of first grooves corresponding to the plurality of clamping columns are opened in the lamp body, a first rod is hermetically slidably connected to the inner wall of the first groove, the side wall of the first rod penetrates through the side wall of the clamping column, a friction rubber pad is fixedly connected to the side wall of the first rod away from the first groove, a plurality of second arc grooves corresponding to the plurality of first grooves are opened on the outer side wall of the lamp body, a second groove is opened on the inner wall of the second arc groove, an arc block is hermetically slidably connected to the inner wall of the second groove, the side wall of the arc block is elastically connected to the inner wall of the second groove through a plurality of first springs, the inner wall of the first groove is communicated with the inner wall of its corresponding second groove through a first pipe, and hydraulic oil is provided in the first groove, the first pipe and the second groove.

[0009] Preferably, an extrusion mechanism for extruding the arc-shaped blocks is provided inside the mounting ring. The extrusion mechanism includes a plurality of strip-shaped cavities opened in the mounting ring. The plurality of strip-shaped cavities correspond to the plurality of arc-shaped blocks one by one. A first plate is hermetically and slidably connected to the inner wall of the strip-shaped cavity. A second rod is fixedly connected to the side wall of the first plate close to the arc-shaped block. The side wall of the second rod penetrates the side wall of the mounting ring, and the side wall of the second rod is hermetically and slidably connected to the side wall of the mounting ring. An arc-shaped plate is fixedly connected to the side wall of the second rod away from the first plate. The side walls of the arc-shaped block and the arc-shaped plate are in contact with each other. A placement groove for cooperating with the arc-shaped plate is opened on the inner side wall of the mounting ring.

[0010] Preferably, a lead screw is rotatably connected to the inner wall of the strip-shaped cavity away from the first plate. The side wall of the lead screw is threadedly connected to the side wall of the first plate. An annular groove is opened at the lower end of the mounting ring. A toothed ring that can rotate by itself is slidably connected to the inner wall of the annular groove. The side wall of the lead screw away from the first plate is located in the annular groove. A gear is fixedly connected to the side wall of the lead screw located in the annular groove. The toothed ring and the gear are meshed with each other.

[0011] Preferably, a hollow plate is fixedly connected to the lower end of the toothed ring. A T-shaped rod is slidably connected to the inner wall of the hollow plate. The upper end of the T-shaped rod is elastically connected to the inner top of the hollow plate through a second spring. A pull rod is fixedly connected to the lower end of the T-shaped rod.

[0012] Preferably, two fixing rings are fixedly connected to the lower end of the mounting ring. The hollow plate is located between the two fixing rings. First clamping grooves and second clamping grooves are opened on the side walls of the two fixing rings. The side wall of the pull rod is in contact with the inner wall of the first clamping groove. The side wall of the pull rod is in contact with the inner wall of the second clamping groove.

[0013] Preferably, a limiting mechanism for limiting the clamping post is provided in the first arc-shaped groove. The limiting mechanism includes a third groove opened at the inner bottom of the first arc-shaped groove close to the vertical groove. A second plate is hermetically and slidably connected to the inner wall of the third groove. A limiting plate is fixedly connected to the upper end of the second plate. The upper end of the limiting plate is in contact with the inner top of the first arc-shaped groove. The lower end of the second plate is elastically connected to the inner bottom of the third groove through a third spring. A pump oil cavity is formed between the side wall of the first plate away from the lead screw and the inner wall of the strip-shaped cavity. Hydraulic oil is provided in the pump oil cavity. The inner wall of the pump oil cavity is communicated with the lower part of the inner wall of the third groove through a second pipe.

[0014] Preferably, the side walls of the two fixing rings are connected with a heat-conducting ring through a plurality of bolts. A plurality of through grooves corresponding to the plurality of vertical grooves one by one are opened on the side wall of the heat-conducting ring. A plurality of heat-radiating fins are fixedly connected to the side wall of the heat-conducting ring. The inner side wall of the heat-conducting ring is in contact with the side wall of the lamp body.

[0015] Compared with the prior art, the advantages of the present invention are as follows:

[0016] 1. A clamping mechanism is provided. Rotate the lamp body counterclockwise so that multiple clamping posts respectively enter multiple first arc-shaped grooves, completing the installation of the mounting ring and the lamp body. The operation is simple and convenient for later disassembly. At this time, the lamp body can rotate through multiple clamping posts in multiple first arc-shaped grooves, and the wiring inside the lamp body can be arranged according to the actual situation, avoiding the current situation where the lamp is connected to the lamp mounting seat through screws. For the installation of a large number of lamps, this installation method is cumbersome, and the position of the installed lamp is fixed, making it impossible to fine-tune it, resulting in a fixed wiring path and inconvenient subsequent wiring and disassembly of the lamp according to the actual situation, affecting the use effect of the lamp.

[0017] 2. At the same time, when the arc-shaped block moves and squeezes the first spring, the hydraulic oil in the second groove will enter the first groove through the first pipe at this time, increasing the pressure in the first groove. Then, it squeezes the first rod and the friction rubber pad to move, making the side wall of the friction rubber pad closely fit with the inner wall of the first arc-shaped groove, fixing the positions of multiple clamping posts, and further fixing the position of the lamp body after installation, avoiding subsequent shaking and other phenomena.

[0018] 3. A limiting mechanism is provided. When the arc-shaped plate and the arc-shaped block are in contact, at this time, the first plate squeezes the oil pumping cavity, making the hydraulic oil in the oil pumping cavity enter the third groove through the second pipe, increasing the space in the third groove, driving the second plate and the limiting plate to move upward, and sealing the first arc-shaped groove to prevent the clamping post from moving out of the first arc-shaped groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of a rotary quick-release lamp proposed by the present invention;

[0020] Figure 2 is Figure 1 the schematic structural diagram of the mounting ring in

[0021] Figure 3 is Figure 2 the enlarged schematic structural diagram of part A in

[0022] Figure 4 is Figure 1 the schematic structural diagram of the lamp body in

[0023] Figure 5 is Figure 1 the vertical sectional structural diagram of the clamping mechanism in

[0024] Figure 6 is Figure 5 the enlarged schematic structural diagram of part B in

[0025] Figure 7 is Figure 1 the schematic top sectional view of the connection between the mounting seat and the lamp body after connection;

[0026] Figure 8 is Figure 7 An enlarged schematic view of the structure at position C in

[0027] Figure 9 is Figure 5 An enlarged schematic view of the structure at position D in

[0028] Figure 10 is Figure 1 A vertical sectional view of the limiting mechanism in

[0029] Figure 11 is Figure 10 An enlarged schematic view of the structure at position E in

[0030] Figure 12 is Figure 1 A bottom view schematic diagram of

[0031] In the figure: 1. mounting ring; 2. mounting hole; 3. lamp body; 4. vertical groove; 5. first arc groove; 6. clamping post; 7. first groove; 8. first rod; 9. friction rubber pad; 10. second arc groove; 11. second groove; 12. arc block; 13. first spring; 14. first tube; 15. strip cavity; 16. first plate; 17. second rod; 18. arc plate; 19. placement groove; 20. annular groove; 21. lead screw; 22. toothed ring; 23. gear; 24. hollow plate; 25. T-shaped rod; 26. pull rod; 27. second spring; 28. fixed ring; 29. first card slot; 30. third groove; 31. second plate; 32. limit plate; 33. third spring; 34. pump oil cavity; 35. second tube; 36. heat conducting ring; 37. through groove; 38. bolt; 39. heat dissipation fin; 40. second card slot. Specific embodiments

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with 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. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Referring to Figure 1 - Figure 12 , a rotary quick-release lamp includes a mounting ring 1 and a lamp body 3, and a plurality of mounting holes 2 are provided on the side wall of the mounting ring 1.

[0034] The clamping mechanism, the clamping mechanism includes a plurality of vertical grooves 4 opened on the inner side wall of the mounting ring 1, and a plurality of first arc grooves 5 corresponding to and communicating with the plurality of vertical grooves 4 are opened on the inner side wall of the mounting ring 1 (as Figure 3As shown in the figure, a plurality of clamping posts 6 corresponding to the plurality of vertical grooves 4 are fixedly connected to the side wall of the lamp body 3 (as Figure 4 shown).

[0035] As Figure 2 - Figure 4 shown, when installing the mounting ring 1 and the lamp body 3, at this time, a plurality of clamping posts 6 correspond to a plurality of vertical grooves 4 one by one, and then the lamp body 3 is driven to move upward. When the clamping posts 6 move upward and fit with the top of the vertical grooves 4, at this time, the lamp body 3 is rotated counterclockwise, so that the plurality of clamping posts 6 respectively enter the plurality of first arc-shaped grooves 5, completing the installation of the mounting ring 1 and the lamp body 3. The operation is simple and convenient for later disassembly. And at this time, the lamp body 3 can rotate in the plurality of first arc-shaped grooves 5 through the plurality of clamping posts 6, and the wiring in the lamp body 3 can be arranged according to the actual situation, avoiding the current situation that the lamp is connected to the lamp mounting seat by screws. For the installation of a large number of lamps, this installation method is cumbersome, and the position of the installed lamp is fixed, and it cannot be finely adjusted, resulting in a fixed wiring path, which is inconvenient for subsequent lamp wiring according to the actual situation, and the lamp is inconvenient to disassemble, affecting the use effect of the lamp.

[0036] A plurality of first grooves 7 corresponding to the plurality of clamping posts 6 are opened in the lamp body 3. The inner wall of the first groove 7 is hermetically slidably connected with a first rod 8. The side wall of the first rod 8 penetrates through the side wall of the clamping post 6. A friction rubber pad 9 is fixedly connected to the side wall of the first rod 8 away from the first groove 7 (as Figure 6 shown). A plurality of second arc-shaped grooves 10 corresponding to the plurality of first grooves 7 are opened on the outer side wall of the lamp body 3 (as Figure 8 shown). A second groove 11 is opened on the inner wall of the second arc-shaped groove 10. The inner wall of the second groove 11 is hermetically slidably connected with an arc-shaped block 12. The side wall of the arc-shaped block 12 is elastically connected to the inner wall of the second groove 11 through a plurality of first springs 13. The inner wall of the first groove 7 is communicated with the inner wall of the corresponding second groove 11 through a first pipe 14. Hydraulic oil is provided in the first groove 7, the first pipe 14 and the second groove 11.

[0037] When the arc-shaped block 12 moves to squeeze the first spring 13, at this time, the hydraulic oil in the second groove 11 will enter the first groove 7 through the first pipe 14, increasing the pressure in the first groove 7, and then squeezing the first rod 8 and the friction rubber pad 9 to move, so that the side wall of the friction rubber pad 9 is closely attached to the inner wall of the first arc-shaped groove 5, fixing the positions of the plurality of clamping posts 6, and further fixing the position of the lamp body 3 after installation, avoiding subsequent shaking and other phenomena.

[0038] The installation ring 1 is provided with an extrusion mechanism for extruding the arc-shaped blocks 12. The extrusion mechanism includes a plurality of strip-shaped cavities 15 opened in the installation ring 1. The plurality of strip-shaped cavities 15 correspond to the plurality of arc-shaped blocks 12 one by one. The inner wall of the strip-shaped cavity 15 is hermetically and slidably connected with a first plate 16. The side wall of the first plate 16 close to the arc-shaped block 12 is fixedly connected with a second rod 17. The side wall of the second rod 17 penetrates through the side wall of the installation ring 1, and the side wall of the second rod 17 is hermetically and slidably connected with the side wall of the installation ring 1. The side wall of the second rod 17 far from the first plate 16 is fixedly connected with an arc-shaped plate 18. The side walls of the arc-shaped block 12 and the arc-shaped plate 18 are attached to each other. The inner side wall of the installation ring 1 is provided with a placement groove 19 (as Figure 8 shown). At this time, before and during the installation of the lamp body 3, the arc-shaped plate 18 is completely located in the placement groove 19 and will not hinder the movement of the lamp body 3. At the same time, the width of the arc-shaped plate 18 is much smaller than the width of the arc-shaped block 12, so that after the lamp body 3 is rotated and finely adjusted, the arc-shaped plate 18 can still extrude the arc-shaped block 12 at this time.

[0039] The inner wall of the strip-shaped cavity 15 far from the first plate 16 is rotatably connected with a lead screw 21. The side wall of the lead screw 21 is threadedly connected with the side wall of the first plate 16. The lower end of the installation ring 1 is provided with an annular groove 20 (as Figure 9 shown). The inner wall of the annular groove 20 is slidably connected with a rotatable toothed ring 22. The side wall of the lead screw 21 far from the first plate 16 is located in the annular groove 20. The side wall of the lead screw 21 located in the annular groove 20 is fixedly connected with a gear 23. The toothed ring 22 and the gear 23 are meshed with each other.

[0040] As Figure 8 shown, when the toothed ring 22 rotates clockwise, the toothed ring 22 will drive a plurality of lead screws 21 to rotate clockwise through the gear 23, driving the first plate 16 to move in the direction close to the gear 23, so that the arc-shaped plate 18 and the arc-shaped block 12 are separated. When the toothed ring 22 rotates counterclockwise, the toothed ring 22 will drive a plurality of lead screws 21 to rotate counterclockwise through the gear 23, driving the first plate 16 to move in the direction away from the gear 23, so that the arc-shaped plate 18 and the arc-shaped block 12 are close to each other.

[0041] The lower end of the toothed ring 22 is fixedly connected with a hollow plate 24. The inner wall of the hollow plate 24 is slidably connected with a T-shaped rod 25. The upper end of the T-shaped rod 25 is elastically connected with the inner top of the hollow plate 24 through a second spring 27. The lower end of the T-shaped rod 25 is fixedly connected with a pull rod 26 (as Figure 9 shown).

[0042] The lower end of the installation ring 1 is fixedly connected with two fixed rings 28. The hollow plate 24 is located between the two fixed rings 28. The side walls of the two fixed rings 28 are both provided with a first card slot 29 and a second card slot 40. The side wall of the pull rod 26 is attached to the inner wall of the first card slot 29, and the side wall of the pull rod 26 is attached to the inner wall of the second card slot 40 (as Figure 9 and Figure 12As shown in the figure), after the pull rod 26 is pulled downward and separated from the first card slot 29, at this time, the operator can drive the hollow plate 24 to rotate through the pull rod 26 and the T-shaped rod 25, drive the toothed ring 22 to rotate. When the pull rod 26 is engaged with the first card slot 29 (as Figure 9 shown), it indicates that the arc-shaped plate 18 is in contact with the arc-shaped block 12 at this time. When the pull rod 26 is engaged with the second card slot 40, it indicates that the arc-shaped plate 18 is separated from the arc-shaped block 12 at this time, and the arc-shaped plate 18 is completely located in the placement groove 19.

[0043] The side walls of the two fixing rings 28 are connected with a heat-conducting ring 36 through a plurality of bolts 38. A plurality of through grooves 37 corresponding to the plurality of vertical grooves 4 are formed in the side wall of the heat-conducting ring 36 to facilitate the passing of the clamping posts 6. A plurality of heat-dissipating fins 39 are fixedly connected to the side wall of the heat-conducting ring 36. The inner side wall of the heat-conducting ring 36 is in contact with the side wall of the lamp body 3, so as to facilitate the disassembly and cleaning of the heat-dissipating fins 39 and avoid excessive dust accumulation on the heat-dissipating fins 39, which affects the heat dissipation of the lamp body 3.

[0044] A limiting mechanism for limiting the clamping post 6 is arranged in the first arc-shaped groove 5. The limiting mechanism includes a third groove 30 (as Figure 3 shown) formed in the inner bottom of the first arc-shaped groove 5 close to the vertical groove 4. The inner wall of the third groove 30 is hermetically slidably connected with a second plate 31 (as Figure 11 shown). The upper end of the second plate 31 is fixedly connected with a limiting plate 32. The upper end of the limiting plate 32 is in contact with the inner top of the first arc-shaped groove 5. The lower end of the second plate 31 is elastically connected with the inner bottom of the third groove 30 through a third spring 33. The space between the side wall of the first plate 16 far from the lead screw 21 and the inner wall of the strip-shaped cavity 15 forms a pump oil cavity 34 (as Figure 8 shown). Hydraulic oil is arranged in the pump oil cavity 34. The inner wall of the pump oil cavity 34 is communicated with the lower part of the inner wall of the third groove 30 through a second pipe 35.

[0045] When the arc-shaped plate 18 is in contact with the arc-shaped block 12, at this time, the first plate 16 squeezes the pump oil cavity 34, so that the hydraulic oil in the pump oil cavity 34 enters the third groove 30 through the second pipe 35, increasing the space in the third groove 30, driving the second plate 31 and the limiting plate 32 to move upward, and performing a sealing treatment on the inside of the first arc-shaped groove 5 to prevent the clamping post 6 from moving out of the first arc-shaped groove 5.

[0046] In the present invention, the mounting ring 1 is fixedly connected to the wall surface through screws in a plurality of mounting holes 2. Before installing the mounting ring 1 and the lamp body 3, at this time, the pull rod 26 is located in the second card slot 40. At this time, the arc-shaped plate 18 is completely located in the placement groove 19, the first rod 8 is completely located in the first groove 7, and the limiting plate 32 is completely located in the third groove 30;

[0047] Subsequently, the heat-conducting ring 36 is sleeved on the lamp body 3, and multiple clamping posts 6 on the lamp body 3 pass through multiple through slots 37 and then correspond to multiple vertical slots 4 one by one. Then, the lamp body 3 is driven to move upward. When the clamping posts 6 move upward and fit with the top of the vertical slots 4, at this time, the lamp body 3 is rotated counterclockwise (as Figure 2 - Figure 4 shown), so that multiple clamping posts 6 respectively enter multiple first arc-shaped slots 5, completing the installation of the installation ring 1 and the lamp body 3. The operation is simple and convenient for later disassembly. And at this time, the lamp body 3 can rotate through multiple clamping posts 6 in multiple first arc-shaped slots 5, and the wiring in the lamp body 3 can be arranged according to the actual situation;

[0048] After installing the lamp body 3, the pull rod 26 is pulled downward to separate from the second card slot 40. Then, the operator drives the toothed ring 22 to rotate counterclockwise through the pull rod 26, the T-shaped rod 25 and the hollow plate 24 (as Figure 8 shown). At this time, the toothed ring 22 will drive multiple lead screws 21 to rotate counterclockwise through the gear 23, driving the first plate 16 to move away from the gear 23, so that the arc-shaped plate 18 and the arc-shaped block 12 approach;

[0049] When the arc-shaped block 12 abuts against the arc-shaped plate 18, the arc-shaped block 12 moves to squeeze the first spring 13. At this time, the hydraulic oil in the second groove 11 will enter the first groove 7 through the first pipe 14, increasing the pressure in the first groove 7. Then, the first rod 8 and the friction rubber pad 9 are squeezed to move, so that the side wall of the friction rubber pad 9 is closely attached to the inner wall of the first arc-shaped slot 5, fixing the positions of multiple clamping posts 6, and further fixing the position of the lamp body 3 after installation, avoiding phenomena such as subsequent shaking;

[0050] At this time, the first plate 16 moves to squeeze the oil pumping cavity 34, so that the hydraulic oil in the oil pumping cavity 34 enters the third groove 30 through the second pipe 35, increasing the space in the third groove 30, driving the second plate 31 and the limiting plate 32 to move upward, and performing a closing treatment on the first arc-shaped slot 5 to prevent the clamping posts 6 from moving out of the first arc-shaped slot 5;

[0051] When the pull rod 26 rotates to be directly below the first card slot 29, at this time, the pull rod 26 is released. Under the action of multiple second springs 27, the pull rod 26 will enter the first card slot 29, limiting the position of the pull rod 26, and thus limiting the position of the lamp body 3 after installation, increasing its stability after installation;

[0052] When the lamp body 3 needs to be disassembled later, only the above steps need to be operated in reverse.

[0053] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A rotary quick-release lamp, characterized in that, Including: An installation ring (1) and a lamp body (3), wherein a plurality of installation holes (2) are formed in the side wall of the installation ring (1); a clamping mechanism, the clamping mechanism includes a plurality of vertical grooves (4) formed in the inner side wall of the installation ring (1), a plurality of first arc grooves (5) corresponding to and communicating with the plurality of vertical grooves (4) are formed in the inner side wall of the installation ring (1), a plurality of clamping posts (6) corresponding to the plurality of vertical grooves (4) are fixedly connected to the side wall of the lamp body (3), a plurality of first grooves (7) corresponding to the plurality of clamping posts (6) are formed in the lamp body (3), a first rod (8) is hermetically slidably connected to the inner wall of the first groove (7), the side wall of the first rod (8) penetrates through the side wall of the clamping post (6), a friction rubber pad (9) is fixedly connected to the side wall of the first rod (8) away from the first groove (7), a plurality of second arc grooves (10) corresponding to the plurality of first grooves (7) are formed in the outer side wall of the lamp body (3), a second groove (11) is formed in the inner wall of the second arc groove (10), an arc block (12) is hermetically slidably connected to the inner wall of the second groove (11), the side wall of the arc block (12) is elastically connected to the inner wall of the second groove (11) through a plurality of first springs (13), the inner wall of the first groove (7) is communicated with the inner wall of the corresponding second groove (11) through a first pipe (14), and hydraulic oil is provided in the first groove (7), the first pipe (14) and the second groove (11); An extrusion mechanism for extruding the arc block (12) is arranged in the installation ring (1), the extrusion mechanism includes a plurality of strip-shaped cavities (15) formed in the installation ring (1), the plurality of strip-shaped cavities (15) correspond to the plurality of arc blocks (12) one by one, a first plate (16) is hermetically slidably connected to the inner wall of the strip-shaped cavity (15), a second rod (17) is fixedly connected to the side wall of the first plate (16) close to the arc block (12), the side wall of the second rod (17) penetrates through the side wall of the installation ring (1), and the side wall of the second rod (17) is hermetically slidably connected to the side wall of the installation ring (1), an arc plate (18) is fixedly connected to the side wall of the second rod (17) away from the first plate (16), the side walls of the arc block (12) and the arc plate (18) are attached to each other, and a placement groove (19) matched with the arc plate (18) is formed in the inner side wall of the installation ring (1); A lead screw (21) is rotatably connected to the inner wall of the strip-shaped cavity (15) away from the first plate (16), the side wall of the lead screw (21) is threadedly connected to the side wall of the first plate (16), a ring-shaped groove (20) is formed at the lower end of the installation ring (1), a toothed ring (22) capable of self-rotation is slidably connected to the inner wall of the ring-shaped groove (20), the side wall of the lead screw (21) away from the first plate (16) is located in the ring-shaped groove (20), and a gear (23) is fixedly connected to the side wall of the lead screw (21) located in the ring-shaped groove (20), and the toothed ring (22) and the gear (23) are meshed with each other; The lower end of the toothed ring (22) is fixedly connected with a hollow plate (24). A T-shaped rod (25) is slidably connected to the inner wall of the hollow plate (24). The upper end of the T-shaped rod (25) is elastically connected to the inner top of the hollow plate (24) through a second spring (27). The lower end of the T-shaped rod (25) is fixedly connected with a pull rod (26). The lower end of the mounting ring (1) is fixedly connected with two fixing rings (28). The hollow plate (24) is located between the two fixing rings (28). First clamping grooves (29) and second clamping grooves (40) are formed in the side walls of the two fixing rings (28). The side wall of the pull rod (26) is in contact with the inner wall of the first clamping groove (29), and the side wall of the pull rod (26) is in contact with the inner wall of the second clamping groove (40). A limiting mechanism for limiting the clamping column (6) is arranged in the first arc-shaped groove (5). The limiting mechanism includes a third groove (30) formed in the inner bottom of the first arc-shaped groove (5) close to the vertical groove (4). A second plate (31) is hermetically slidably connected to the inner wall of the third groove (30). The upper end of the second plate (31) is fixedly connected with a limiting plate (32). The upper end of the limiting plate (32) is in contact with the inner top of the first arc-shaped groove (5). The lower end of the second plate (31) is elastically connected to the inner bottom of the third groove (30) through a third spring (33). A pump oil chamber (34) is formed between the side wall of the first plate (16) far from the lead screw (21) and the inner wall of the strip-shaped cavity (15). Hydraulic oil is arranged in the pump oil chamber (34). The inner wall of the pump oil chamber (34) is communicated with the lower part of the inner wall of the third groove (30) through a second pipe (35).

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