Hydraulic oil cylinder end machining device

Abstract

The hydraulic oil cylinder end machining device comprises a base, the upper end of the base is fixedly connected with a shell, the upper end of the shell is fixedly provided with a paint spraying mechanism, the front end of the base is fixedly provided with a control box, and the inner cavity and the upper end of the base are jointly provided with a clamping rotating assembly. The inner surface of the shell and the rear end of the base are jointly provided with a cleaning assembly, and the clamping rotating assembly comprises a first sliding groove formed in the upper end of the base. According to the hydraulic oil cylinder end machining device, through the arrangement of the conveying mechanism, the clamping mechanism and the rotating mechanism, the hydraulic oil cylinder can be clamped and fixed, rotation of the hydraulic oil cylinder is achieved in the conveying process, paint spraying machining can be stably and evenly conducted on the end of the hydraulic oil cylinder, rotation of the hydraulic oil cylinder is achieved, and machining efficiency is improved. And the uniformity of paint spraying and the accuracy of the spraying angle are ensured, and the machining precision and the surface quality are improved.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic cylinder processing, and in particular to a hydraulic cylinder end processing device. Background Art

[0002] The processing and painting of the hydraulic cylinder end is carried out through a series of precision processes, including cleaning the surface, accurately fixing the cylinder, uniform spraying and drying after painting. The cleaning ring cleans the cylinder surface to ensure that there are no stains; a uniform coating is achieved through a precisely controlled painting process; after painting, heating and drying are used to accelerate curing to ensure that the paint surface has strong adhesion, a smooth surface and good durability, ultimately improving the protection performance and appearance quality of the hydraulic cylinder end.

[0003] Chinese patent announcement number CN221232089U discloses a hydraulic cylinder end processing device, including a base plate, the top of which is fixedly connected to a vertical plate; an electromagnetic rod is installed on one side of the vertical plate through a bearing, the outer wall of the electromagnetic rod is provided with a brush, the outer sleeve of the electromagnetic rod is provided with a cylinder barrel, a rodless cylinder is installed on the top of the base plate, and a bracket is installed on the slide rail of the rodless cylinder through a slider; when the utility model is used, the end of the cylinder barrel is sleeved outside the electromagnetic rod and inserted into the cylinder seat, the rodless cylinder drives the slider to move laterally, drives the bracket and the clamping block to squeeze toward the cylinder barrel to form a clamp, and the inserting block is inserted into the slot, and the electromagnetic rod is driven to rotate by the starting motor, and the electromagnetic rod can absorb and clean the metal debris on the inner wall of the cylinder barrel, and the brush can further improve the cleaning efficiency; however, the above patent document still has the following defects during implementation: Although the above patent can clean up the technical debris in the processing process during implementation, it cannot drive the hydraulic cylinder to rotate during the transportation process, and cannot clean the outer surface of the hydraulic cylinder before painting. Summary of the invention

[0004] The main purpose of the present invention is to provide a hydraulic cylinder end processing device, which can effectively solve the problem that the hydraulic cylinder cannot be driven to rotate during transportation and the outer surface of the hydraulic cylinder cannot be cleaned before painting.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a hydraulic cylinder end processing device, including a base, the upper end of the base is fixedly connected to a shell, the upper end of the shell is fixedly installed with a paint spraying mechanism, the front end of the base is fixedly installed with a control box, the inner cavity and the upper end of the base are jointly provided with a clamping and rotating assembly, and the inner surface of the shell and the rear end of the base are jointly provided with a cleaning assembly.

[0006] Preferably, the clamping and rotating assembly includes a slide groove 1 opened at the upper end of the base, a conveying mechanism is arranged on the inner surface of the slide groove 1, a clamping mechanism is arranged on the upper end of the conveying mechanism, a rotating mechanism is arranged on the outer surface of the clamping mechanism, and a protective mechanism is symmetrically arranged on the inner surface of the slide groove 1.

[0007] Preferably, the conveying mechanism includes a threaded rod 1 rotatably connected to the inner surface of the base, a dual-axis motor is fixedly connected to the rear end of the base, the front end output end of the dual-axis motor is fixedly connected to a rotating rod 1 rotatably connected to the base via a coupling, the outer surface of the rotating rod 1 and the outer surface of the threaded rod 1 are jointly fixedly connected to a transmission mechanism, the outer surface of the threaded rod 1 is threadedly connected to a groove plate slidably connected to a slide groove 1, and the rear end output end of the dual-axis motor is fixedly connected to a rotating rod 2 via a coupling.

[0008] Preferably, the clamping mechanism includes two threaded rods rotatably connected to the inner surface of the groove plate, the outer surface of the two threaded rods is symmetrically threaded with a clamping plate, the inner surfaces of the two clamping plates are rotatably connected to round rod blocks, the ends of the two round rod blocks close to each other are fixedly connected to a fixing ring, and the upper end of the groove plate is symmetrically fixedly connected to a fixing plate.

[0009] Preferably, the rotating mechanism includes two rotating rings rotatably connected to the inner surface of the fixed plate, and the upper part of the outer surface of the two round rod blocks is provided with a second slide groove, and the ends of the two rotating rings close to each other are fixedly connected to a gear slidingly connected to the inner surface of the second slide groove, and the inner surface of the outer shell is symmetrically fixedly connected to a rack meshing with the gear.

[0010] Preferably, the protective mechanism includes a circular groove opened on the right part of the inner surface of the slide groove, the inner surface of the circular groove is fixedly connected to a fixing rod, the outer surface of the fixing rod is fixedly connected to a spring, and the left end of the spring is fixedly connected to a protective cloth fixedly connected to the right end of the groove plate.

[0011] Preferably, the cleaning assembly comprises an arc hole cover fixedly connected to the rear end of the base, the inner surface of the arc hole cover is provided with a drying mechanism, and the inner surface of the outer shell is provided with a cleaning mechanism.

[0012] Preferably, the cleaning mechanism includes two transmission rods rotatably connected to the inner surface of the outer shell, the outer surface of the transmission rod located at the front and the outer surface of the second rotating rod are commonly fixedly connected with a pulley group 2, the outer surfaces of the two transmission rods are commonly fixedly connected with a pulley group 3, and the middle parts of the outer surfaces of the two transmission rods are commonly wrapped with a cleaning ring.

[0013] Preferably, the drying mechanism includes fan blades rotatably connected to the inner surface of the arc hole cover, the outer surface of the fan blade and the outer surface of the transmission rod at the rear are jointly and fixedly connected with a pulley group, the rear end of the outer shell is fixedly connected to a heating box, the heating box is connected to the inner surface of the arc hole cover through a pipe, and the upper end of the heating box passes through and extends to the inner surface of the outer shell and is fixedly connected with a connecting pipe.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, by providing a conveying mechanism, a clamping mechanism and a rotating mechanism, the hydraulic cylinder can be clamped and fixed, and the hydraulic cylinder can be rotated during the conveying process. The end of the hydraulic cylinder can be stably and evenly sprayed with paint, and the rotation of the hydraulic cylinder helps to ensure the uniformity of the paint spraying and the accuracy of the spraying angle, thereby improving the processing accuracy and surface quality. 2. In the present invention, a cleaning mechanism is provided to rotate the cleaning ring, thereby cleaning the outer surface of the end of the hydraulic cylinder, which helps to remove dirt, oil stains or other impurities on the surface of the cylinder, ensuring that the surface is smooth and free of dirt, thereby providing a clean surface foundation for the painting process, avoiding stains from affecting the quality of the painting, improving the adhesion and uniformity of the spraying, and ensuring the fineness and stability of the final processing effect. 3. In the present invention, a drying mechanism is provided so that the end of the hydraulic cylinder after painting can be dried under the cooperation of the fan blades and the heating box. The heating and drying process helps to quickly dry the paint layer, reduce residual moisture on the paint surface, avoid defects or unevenness on the paint surface, and accelerate the curing process of the paint, thereby improving the durability and surface quality of the spraying, and ensuring that the effect of the hydraulic cylinder end after painting is more refined, durable and stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the overall cross-sectional structure of the present invention; Figure 3 It is a schematic diagram of the cross-sectional structure of a circular groove of the present invention; Figure 4 It is a schematic diagram of the structure of the clamping rotating assembly and the cleaning assembly of the present invention; Figure 5 It is a schematic diagram of the structure of the conveying mechanism of the present invention; Figure 6 It is a schematic diagram of the explosion effect of the clamping mechanism and the rotating mechanism of the present invention; Figure 7 It is a schematic diagram of the structure of the protection mechanism of the present invention; Figure 8 It is a schematic diagram of the cleaning mechanism structure of the present invention; Fig. 9 It is a schematic diagram of the cross-sectional structure of the drying mechanism of the present invention.

[0016] In the figure: 1, base; 2, shell; 3, painting mechanism; 4, control box; 5, clamping and rotating assembly; 51, slideway 1; 52, conveying mechanism; 521, double-axis motor; 522, rotating rod 1; 523, threaded rod 1; 524, transmission mechanism; 525, groove plate; 526, rotating rod 2; 53, clamping mechanism; 531, threaded rod 2; 532, clamping plate; 533, round rod block; 534, fixing ring; 535, fixing plate; 54, rotating mechanism; 541 , slide groove 2; 542, gear; 543, rotating ring; 55, protective mechanism; 551, circular groove; 552, fixing rod; 553, spring; 554, protective cloth; 56, rack; 6, cleaning component; 61, arc hole cover; 62, drying mechanism; 621, fan blade; 622, pulley group 1; 623, heating box; 624, connecting pipe; 63, cleaning mechanism; 631, transmission rod; 632, pulley group 2; 633, pulley group 3; 634, cleaning ring. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0018] Embodiment 1, as Figure 1 and Figure 2 As shown, a hydraulic cylinder end processing device includes a base 1, an outer shell 2 is fixedly connected to the upper end of the base 1, a paint spraying mechanism 3 is fixedly installed on the upper end of the outer shell 2, a control box 4 is fixedly installed on the front end of the base 1, a clamping and rotating component 5 is commonly provided at the inner cavity and the upper end of the base 1, and a cleaning component 6 is commonly provided on the inner surface of the outer shell 2 and the rear end of the base 1.

[0019] During the implementation of this embodiment, the hydraulic cylinder is placed in the clamping and rotating component 5, and then the clamping and rotating component 5 is manually operated to clamp and fix the hydraulic cylinder. Then, by operating the control box 4, the clamping and rotating component 5 drives the hydraulic cylinder to move from right to left, and the hydraulic cylinder is rotated during the movement. During the rotation, the dust and debris attached to the outer surface are cleaned by the cleaning component 6, and then the outer surface of the hydraulic cylinder is sprayed by the paint spraying mechanism 3, and after the spraying is completed, the paint sprayed on the surface is dried by the cleaning component 6.

[0020] The control box 4 mentioned above is a mature control technology means and equipment in the prior art. In this solution, its controllable functions are utilized, and its internal structure, connection method and principle are not further explained.

[0021] The paint spraying mechanism 3 mentioned above is a mature paint spraying technical means and equipment in the prior art. In this solution, its function of spraying paint on the hydraulic cylinder is utilized, and its internal structure, connection method and principle are not further explained.

[0022] Specifically, in order to achieve the clamping and rotation of the hydraulic cylinder, refer to Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 In this embodiment, the clamping and rotating assembly 5 includes a slide groove 51 opened at the upper end of the base 1, a conveying mechanism 52 is arranged on the inner surface of the slide groove 51, a clamping mechanism 53 is arranged on the upper end of the conveying mechanism 52, a rotating mechanism 54 is arranged on the outer surface of the clamping mechanism 53, and a protective mechanism 55 is symmetrically arranged on the inner surface of the slide groove 51.

[0023] For further information, see Figure 4 and Figure 5 In this embodiment, the conveying mechanism 52 includes a threaded rod 523 rotatably connected to the inner surface of the base 1, a dual-axis motor 521 is fixedly connected to the rear end of the base 1, a front end output end of the dual-axis motor 521 is fixedly connected to a rotating rod 522 rotatably connected to the base 1 through a coupling, an outer surface of the rotating rod 522 and an outer surface of the threaded rod 523 are jointly fixedly connected with a transmission mechanism 524, an outer surface of the threaded rod 523 is threadedly connected to a groove plate 525 slidably connected to the slide groove 51, and a rear end output end of the dual-axis motor 521 is fixedly connected to a rotating rod 526 through a coupling.

[0024] For further information, see Figure 4 and Figure 6 In this embodiment, the clamping mechanism 53 includes a threaded rod 531 rotatably connected to the inner surface of the groove plate 525, and the outer surface of the threaded rod 531 is symmetrically threaded with a clamping plate 532, and the inner surfaces of the two clamping plates 532 are rotatably connected to round rod blocks 533, and the ends of the two round rod blocks 533 close to each other are fixedly connected to a fixing ring 534, and the upper end of the groove plate 525 is symmetrically fixedly connected to a fixing plate 535.

[0025] For further information, see Figure 4 and Figure 6 In this embodiment, the rotating mechanism 54 includes two rotating rings 543 rotatably connected to the inner surface of the fixed plate 535, and the upper part of the outer surface of the two round rod blocks 533 is provided with a second slide groove 541, and the ends of the two rotating rings 543 close to each other are fixedly connected to a gear 542 slidably connected to the inner surface of the second slide groove 541, and the inner surface of the shell 2 is symmetrically fixedly connected to a rack 56 meshing with the gear 542.

[0026] During the implementation process, the hydraulic cylinder is placed between the two fixing rings 534, and then the threaded rod 2 531 is manually rotated. Since the threads on the outer surface of the threaded rod 2 531 are symmetrically and reversely distributed, the two round rod blocks 533 are moved closer to each other under the action of the threaded connection, driving the two fixing rings 534 to fix the two ends of the hydraulic cylinder. When the two round rod blocks 533 are close to each other, the gear 542 slides on the inner surface of the round rod block 533. At this time, the front output end of the dual-axis motor 521 is started to drive the rotating rod 1 522 to rotate through the coupling. The transmission mechanism 524 drives the threaded rod 523 to rotate, and the groove plate 525 moves from right to left under the action of the threaded connection. When the gear 542 is engaged with the rack 56, the round rod block 533 rotates on the inner surface of the clamping plate 532, thereby driving the clamped hydraulic cylinder to rotate. The end of the hydraulic cylinder can be stably and evenly sprayed with paint. The engagement of the gear 542 and the rack 56 causes the round rod block 533 to rotate, thereby realizing the rotation of the hydraulic cylinder, which helps to ensure the uniformity of the paint spraying and the accuracy of the spraying angle, and improves the processing accuracy and surface quality.

[0027] The transmission mechanism 524 mentioned above is composed of two bevel gears.

[0028] For further information, see Figure 3 , Figure 4 and Figure 7 In this embodiment, the protective mechanism 55 includes a circular groove 551 opened on the right part of the inner surface of the slide groove 51, a fixing rod 552 is fixedly connected to the inner surface of the circular groove 551, a spring 553 is fixedly connected to the outer surface of the fixing rod 552, and a protective cloth 554 is fixedly connected to the right end of the groove plate 525 at the left end of the spring 553.

[0029] From the above, it can be seen that the groove plate 525 will drive the protective cloth 554 to move in a corresponding direction during the movement, so that the protective cloth 554 can always remain taut under the deformation force of the spring 553, and then the slide groove 51 can be blocked to prevent the paint mist from entering the inner cavity of the base 1 during the painting process, which can effectively prevent the paint mist from polluting the inside of the equipment, keep the processing environment clean, reduce unnecessary pollution and equipment damage, and ensure the smooth progress of the painting process and the stability of the surface quality.

[0030] Embodiment 2: Based on Embodiment 1, this embodiment adds a cleaning component 6 for cleaning the outer surface of the end of the hydraulic cylinder before painting, so as to achieve the purpose of cleaning the outer surface of the end of the hydraulic cylinder before painting.

[0031] Specifically, in order to clean the outer surface of the hydraulic cylinder end before painting, refer to Figure 4 , Figure 8 and Fig. 9 In this embodiment, the cleaning assembly 6 includes an arc hole cover 61 fixedly connected to the rear end of the base 1, a drying mechanism 62 is provided on the inner surface of the arc hole cover 61, and a cleaning mechanism 63 is provided on the inner surface of the shell 2.

[0032] For further information, see Figure 4 and Figure 8 In this embodiment, the cleaning mechanism 63 includes two transmission rods 631 rotatably connected to the inner surface of the outer shell 2, the outer surface of the front transmission rod 631 and the outer surface of the second rotating rod 526 are fixedly connected with a pulley group 2 632, the outer surfaces of the two transmission rods 631 are fixedly connected with a pulley group 3 633, and the middle parts of the outer surfaces of the two transmission rods 631 are wrapped with a cleaning ring 634.

[0033] During the implementation process, the rear output end of the dual-axis motor 521 is started to drive the rotating rod 2 526 to rotate through the coupling, and the two transmission rods 631 are driven to rotate under the joint transmission action of the pulley group 2 632 and the pulley group 3 633. The cleaning ring 634 is rotated under the action of the winding connection, and then the outer surface of the end of the hydraulic cylinder is cleaned, which helps to remove dirt, oil stains or other impurities on the surface of the cylinder, ensuring that the surface is smooth and free of dirt, thereby providing a clean surface foundation for the painting process, avoiding stains from affecting the quality of painting, improving the adhesion and uniformity of spraying, and ensuring the fineness and stability of the final processing effect.

[0034] The dual-axis motor 521 mentioned above is a mature driving technology means and equipment in the prior art. In this solution, the couplings on both sides thereof can rotate independently and can stop after rotating to a set number of circles. Its internal structure, connection method and principle will not be elaborated any more.

[0035] For further information, see Figure 4 and Fig. 9 In this embodiment, the drying mechanism 62 includes a fan blade 621 rotatably connected to the inner surface of the arc hole cover 61, the outer surface of the fan blade 621 and the outer surface of the rear transmission rod 631 are fixedly connected to a pulley set 622, the rear end of the outer shell 2 is fixedly connected to a heating box 623, the heating box 623 is connected to the inner surface of the arc hole cover 61 through a pipeline, and the upper end of the heating box 623 penetrates and extends to the inner surface of the outer shell 2 and is fixedly connected to a connecting pipe 624.

[0036] During the implementation process, after the hydraulic cylinder end is painted, the transmission rod 631 located at the rear drives the fan blade 621 to rotate through the transmission action of the pulley group 622 during the rotation process, so that the rotation of the fan blade 621 can suck air into the arc hole cover 61, enter the heating box 623 through the pipeline for heating, and then spray it out through the connecting pipe 624 to dry the rotating hydraulic cylinder end. The heating and drying process helps to quickly dry the paint layer, reduce residual moisture on the paint surface, avoid defects or unevenness on the paint surface, and accelerate the curing process of the paint, thereby improving the durability and surface quality of the spraying, and ensuring that the effect of the hydraulic cylinder end after painting is more refined, lasting and stable.

[0037] The pulley set 1 622, the pulley set 2 632 and the pulley set 3 633 mentioned above are all composed of two pulleys and a belt.

[0038] The heating box 623 mentioned above is a mature heating technology means and equipment in the prior art. In this solution, its function of heating the air is utilized, and its internal structure, principle and connection method are not further explained.

[0039] Working process: When in use, the end of the hydraulic cylinder is fixed by the clamping mechanism 53, and then the end of the hydraulic cylinder is driven to rotate during the transportation process through the cooperation of the conveying mechanism 52 and the rotating mechanism 54, and then the outer surface of the end of the hydraulic cylinder is cleaned by the cleaning mechanism 63. After the painting is completed, the end of the hydraulic cylinder is dried by the drying mechanism 62.

[0040] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A hydraulic cylinder end processing device, comprising a base (1), characterized in that: The upper end of the base (1) is fixedly connected to a shell (2), a paint spraying mechanism (3) is fixedly mounted on the upper end of the shell (2), a control box (4) is fixedly mounted on the front end of the base (1), a clamping and rotating assembly (5) is commonly provided in the inner cavity and the upper end of the base (1), and a cleaning assembly (6) is commonly provided on the inner surface of the shell (2) and the rear end of the base (1).

2. A hydraulic cylinder end processing device according to claim 1, characterized in that: The clamping and rotating assembly (5) comprises a slide groove (51) opened at the upper end of the base (1); a conveying mechanism (52) is arranged on the inner surface of the slide groove (51); a clamping mechanism (53) is arranged on the upper end of the conveying mechanism (52); a rotating mechanism (54) is arranged on the outer surface of the clamping mechanism (53); and a protective mechanism (55) is symmetrically arranged on the inner surface of the slide groove (51).

3. A hydraulic cylinder end processing device according to claim 2, characterized in that: The conveying mechanism (52) comprises a threaded rod (523) rotatably connected to the inner surface of the base (1); a dual-axis motor (521) is fixedly connected to the rear end of the base (1); a rotating rod (522) rotatably connected to the base (1) is fixedly connected to the front output end of the dual-axis motor (521) via a coupling; a transmission mechanism (524) is fixedly connected to the outer surface of the rotating rod (522) and the outer surface of the threaded rod (523); a groove plate (525) slidably connected to the slide groove (51) is threadedly connected to the outer surface of the threaded rod (523); and a rotating rod (526) is fixedly connected to the rear output end of the dual-axis motor (521) via a coupling.

4. A hydraulic cylinder end processing device according to claim 3, characterized in that: The clamping mechanism (53) comprises a second threaded rod (531) rotatably connected to the inner surface of the groove plate (525); the outer surface of the second threaded rod (531) is symmetrically threadedly connected to a clamping plate (532); the inner surfaces of the two clamping plates (532) are both rotatably connected to round rod blocks (533); the ends of the two round rod blocks (533) close to each other are both fixedly connected to a fixing ring (534); and the upper end of the groove plate (525) is symmetrically fixedly connected to a fixing plate (535) front and back.

5. A hydraulic cylinder end processing device according to claim 4, characterized in that: The rotating mechanism (54) comprises two rotating rings (543) rotatably connected to the inner surface of the fixed plate (535); the upper parts of the outer surfaces of the two round rod blocks (533) are each provided with a second slide groove (541); the ends of the two rotating rings (543) close to each other are each fixedly connected to a gear (542) slidably connected to the inner surface of the second slide groove (541); and the inner surface of the housing (2) is symmetrically fixedly connected to a rack (56) meshingly connected to the gear (542) in a front-to-rear manner.

6. The hydraulic cylinder end processing device according to claim 3, characterized in that: The protective mechanism (55) comprises a circular groove (551) formed on the right portion of the inner surface of the first slide groove (51); a fixing rod (552) is fixedly connected to the inner surface of the circular groove (551); a spring (553) is fixedly connected to the outer surface of the fixing rod (552); and a protective cloth (554) is fixedly connected to the right end of the groove plate (525) at the left end of the spring (553).

7. The hydraulic cylinder end processing device according to claim 3, characterized in that: The cleaning assembly (6) comprises an arc hole cover (61) fixedly connected to the rear end of the base (1), the inner surface of the arc hole cover (61) is provided with a drying mechanism (62), and the inner surface of the outer shell (2) is provided with a cleaning mechanism (63).

8. The hydraulic cylinder end processing device according to claim 7, characterized in that: The cleaning mechanism (63) comprises two transmission rods (631) rotatably connected to the inner surface of the housing (2); the outer surface of the transmission rod (631) at the front and the outer surface of the second rotating rod (526) are fixedly connected to a second pulley group (632); the outer surfaces of the two transmission rods (631) are fixedly connected to a third pulley group (633); and the middle parts of the outer surfaces of the two transmission rods (631) are wrapped with a cleaning ring (634).

9. A hydraulic cylinder end processing device according to claim 8, characterized in that: The drying mechanism (62) comprises a fan blade (621) rotatably connected to the inner surface of the arc hole cover (61); the outer surface of the fan blade (621) and the outer surface of the transmission rod (631) at the rear are fixedly connected to a pulley set (622); the rear end of the housing (2) is fixedly connected to a heating box (623); the heating box (623) is connected to the inner surface of the arc hole cover (61) through a pipeline; the upper end of the heating box (623) penetrates and extends to the inner surface of the housing (2) and is fixedly connected to a connecting pipe (624).

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