Welding device of hydraulic oil cylinder

Abstract

The invention discloses a hydraulic oil cylinder welding device, and particularly relates to the technical field of hydraulic oil cylinder welding, the hydraulic oil cylinder welding device comprises a base, the upper end of the base is fixedly connected with a shell, the rear part of the upper end of the base is fixedly provided with a welding assembly, the inner surface and the left end of the shell are jointly provided with a rotating assembly, and the upper end of the base is provided with a supporting assembly. According to the welding device of the hydraulic oil cylinder, under the cooperative action of the driving mechanism, the pushing mechanism and the inner supporting mechanism, the hydraulic oil cylinder is internally supported and fixed, the welding process can be more uniform and comprehensive through rotation of the hydraulic oil cylinder, all parts of the hydraulic oil cylinder can be uniformly exposed in a welding area through rotation, and the welding quality is improved. By means of rotation, uniform distribution of welding heat and materials is ensured, so that welding quality is improved, incomplete welding caused by a fixed angle can be avoided, welding effect consistency and strength of all connecting parts are ensured, and welding defects caused by local overheating or supercooling are reduced.

Description

Technical Field

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

[0002] Hydraulic cylinders are widely used in machinery, engineering and automation equipment. As important power transmission components, they are subject to high pressure and workload. The welding process of hydraulic cylinders requires precision and stability to ensure the strength and sealing of their structures. During the welding process, the position and temperature of each component of the hydraulic cylinder must be strictly controlled to avoid deformation, defects or leakage, ensuring long-term stable operation under high pressure.

[0003] Chinese patent announcement number CN115213605A discloses a welding device for a hydraulic cylinder, comprising a fixed base, a lifting platform fixedly connected to the top of the fixed base, a driving motor fixedly connected to the top of the lifting platform, a welding bracket fixedly connected to the top of the fixed base, a welding device arranged on one side of the welding bracket, the welding device can slide on the welding bracket, a mounting device is connected to the driving shaft of the driving motor and the top of the welding bracket, the driving shaft of the driving motor is fixedly connected to the mounting device, the top of the welding bracket is rotatably connected to the mounting device, the mounting device comprises: a mounting seat, the mounting seat has a disc-shaped structure, and the invention relates to the field of welding technology. This welding device for a hydraulic cylinder is convenient for adapting to the use of workpieces of different lengths, and when fixing, it is only necessary to insert the workpiece into the mounting groove, the fixing operation is simple, and workpieces of different diameters can be fixed inside the mounting groove, and the adaptability range is wide; however, the above patent document still has the following defects during implementation: Although the above patent can fix hydraulic cylinders of different diameters during implementation, it cannot drive the hydraulic cylinders for rotational welding, and it is also impossible to clean the debris on the outer surface of the hydraulic cylinder before welding. Summary of the invention

[0004] The main purpose of the present invention is to provide a welding device for a hydraulic cylinder, which can effectively solve the problem that the hydraulic cylinder cannot be driven for rotation welding and the debris on the outer surface of the hydraulic cylinder cannot be cleaned before welding.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a welding device for a hydraulic cylinder, comprising a base, a shell fixedly connected to the upper end of the base, a control box fixedly installed at the front end of the shell, a welding assembly fixedly installed at the rear part of the upper end of the base, a rotating assembly jointly arranged on the inner surface and the left end of the shell, and a supporting assembly arranged on the upper end of the base.

[0006] Preferably, the rotating assembly comprises a circular plate fixedly connected to the left end of the shell, a driving mechanism is arranged on the upper inner surface of the shell, an inner supporting mechanism is arranged on the outer surface of the driving mechanism, and a pushing mechanism is arranged on the lower inner surface of the shell.

[0007] Preferably, the driving mechanism includes a double-axis motor fixedly connected to the upper inner surface of the shell, the left output end of the double-axis motor is fixedly connected to a rotating rod 1 via a coupling, the right output end of the double-axis motor is fixedly connected to a rotating rod 2 rotatably connected to the shell via a coupling, a fixed block is fixedly connected to the lower inner surface of the shell, the left end of the fixed block penetrates and extends to the right end of the shell and is rotatably connected to a threaded rod 1, and the outer surfaces of the threaded rod 1 and the outer surfaces of the rotating rod 2 are jointly fixedly connected to a pulley group.

[0008] Preferably, the pushing mechanism includes an oil tank fixedly connected to the lower part of the inner surface of the outer shell, a slider is threadedly connected to the outer surface of the threaded rod, an extrusion plate is fixedly connected to the upper end of the slider and is slidably connected to the inner surface of the oil tank, a hollow cylinder is fixedly connected to the inner surface of the outer shell and is rotatably connected to the rotating rod, a push ring is slidably connected to the inner surface of the hollow cylinder, a connecting pipe is fixedly connected to the right part of the inner surface of the hollow cylinder and extends to the left part of the inner surface of the oil tank, and a plurality of balls are arranged on the inner surface of the push ring.

[0009] Preferably, the inner support mechanism includes a notch block 1 fixedly connected to the outer surface of a rotating rod 1, a notch block 2 is slidably connected to the inner surface of the rotating rod 1, the inner surfaces of the notch block 1 and the notch block 2 are both annularly and equidistantly distributed and fixedly connected with four support rods, the outer surfaces of the support rods on the same side are rotatably connected with support blocks, a telescopic rod fixedly connected to the left end of the notch block 2 is fixedly connected to the left part of the inner surface of the rotating rod 1, a spring is sleeved on the outer surface of the telescopic rod, and the two ends of the spring are respectively fixedly connected to the inner surface of the rotating rod 1 and the left end of the notch block 2.

[0010] Preferably, the support assembly comprises a rectangular frame fixedly connected to the upper end of the base, a lifting mechanism is arranged on the inner surface of the rectangular frame, and a cleaning mechanism is arranged on the front end of the rectangular frame.

[0011] Preferably, the lifting mechanism includes a partition fixedly connected to the inner surface of the rectangular frame, the inner surface of the rectangular frame is rotatably connected to a transmission rod, the inner surface of the partition is rotatably connected to a second threaded rod, the outer surface of the transmission rod and the outer surface of the second threaded rod are commonly fixedly connected to a gear set, the outer surface of the second threaded rod is threadedly connected to a push plate slidably connected to the rectangular frame, and the inner surface of the push plate is rotatably connected to rollers distributed linearly and equidistantly.

[0012] Preferably, the cleaning mechanism comprises a flexible support rod fixedly connected to the front end of the rectangular frame, one end of the flexible support rod away from the rectangular frame is fixedly connected to a mounting frame, and a sponge block is fixedly mounted on the inner surface of the mounting frame.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, the hydraulic cylinder is fixed by the internal support through the cooperation of the driving mechanism, the pushing mechanism and the internal support mechanism. The rotation of the hydraulic cylinder can make the welding process more uniform and comprehensive. Through rotation, various parts of the hydraulic cylinder can be evenly exposed to the welding area, ensuring the uniform distribution of welding heat and materials, thereby improving the welding quality. The rotation can also avoid incomplete welding caused by fixed angles, ensure the consistency and strength of the welding effect of each connection part, and reduce welding defects caused by local overheating or overcooling. 2. In the present invention, a lifting mechanism is provided, under the action of the threaded rod 2 and the push plate, the hydraulic cylinder maintains balance and stability during the rotation welding process, thereby maintaining balance and stability during the welding process, ensuring that the hydraulic cylinder is not prone to displacement or vibration during rotation, avoiding welding position deviation or quality problems caused by instability, ensuring the accuracy and consistency of the welding process, and improving the welding quality. 3. In the present invention, by providing a cleaning mechanism, the sponge block can be closely attached to the outer surface of the hydraulic cylinder under the action of the flexible support rod, and the debris attached to the outer surface of the hydraulic cylinder can be effectively cleaned before spin welding. Before welding, the surface of the hydraulic cylinder is ensured to be clean and flat, avoiding debris from interfering with the welding process and reducing the risk of welding defects. The cleaned surface is conducive to good adhesion and uniform melting of welding materials, thereby improving welding quality and ensuring the strength and durability of the welded connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] 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 the rotating assembly of the present invention; Figure 4 It is a schematic diagram of the driving mechanism structure of the present invention; Figure 5 It is a schematic diagram of the cross-sectional structure of the pushing mechanism of the present invention; Figure 6 For the present invention Figure 5 A schematic diagram of the enlarged structure at A in the middle; Figure 7 It is a schematic diagram of the structure of the inner support mechanism of the present invention; Figure 8 It is a schematic diagram of the cross-sectional structure of the support assembly of the present invention.

[0015] In the figure: 1, base; 2, housing; 3, control box; 4, welding assembly; 5, rotating assembly; 51, circular plate; 52, driving mechanism; 521, dual-axis motor; 522, rotating rod 1; 523, rotating rod 2; 524, fixing block; 525, threaded rod 1; 526, pulley group; 53, pushing mechanism; 531, oil tank; 532, slider; 533, extrusion plate; 534, hollow cylinder; 535, connecting pipe; 536, ball bearing; 537, push ring ; 54, internal support mechanism; 541, notch block one; 542, notch block two; 543, support rod; 544, support block; 545, telescopic rod; 546, spring; 6, support assembly; 61, rectangular frame; 62, lifting mechanism; 621, partition; 622, transmission rod; 623, gear set; 624, threaded rod two; 625, push plate; 626, roller; 63, cleaning mechanism; 631, flexible support rod; 632, installation frame; 633, sponge block. DETAILED DESCRIPTION

[0016] 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.

[0017] Embodiment 1, as Figure 1 and Figure 2 As shown, a welding device for a hydraulic cylinder includes a base 1, a shell 2 is fixedly connected to the upper end of the base 1, a control box 3 is fixedly installed at the front end of the shell 2, a welding assembly 4 is fixedly installed at the rear part of the upper end of the base 1, a rotating assembly 5 is commonly provided on the inner surface and the left end of the shell 2, and a supporting assembly 6 is provided at the upper end of the base 1.

[0018] During the implementation of this embodiment, the inner surface of the hydraulic cylinder is placed on the rotating component 5. At this time, by operating the control box 3, the rotating component 5 supports the inner surface of the hydraulic cylinder, and the supporting component 6 supports the other side of the outer surface of the hydraulic cylinder. Then, the hydraulic cylinder is driven to rotate by the rotating component 5, and the debris attached to the outer surface of the hydraulic cylinder is cleaned before welding during the rotation process. Then, during the rotation process, the welding component 4 cooperates to weld the hydraulic cylinder.

[0019] The control box 3 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, principle and connection method are not further explained.

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

[0021] Specifically, in order to realize the internal support rotation of the hydraulic cylinder to be welded, refer to Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 In this embodiment, the rotating assembly 5 includes a circular plate 51 fixedly connected to the left end of the outer shell 2, a driving mechanism 52 is provided on the upper inner surface of the outer shell 2, an inner support mechanism 54 is provided on the outer surface of the driving mechanism 52, and a pushing mechanism 53 is provided on the lower inner surface of the outer shell 2.

[0022] For further information, see Figure 3 and Figure 4 In this embodiment, the driving mechanism 52 includes a double-axis motor 521 fixedly connected to the upper inner surface of the shell 2, the left output end of the double-axis motor 521 is fixedly connected to a rotating rod 1 522 through a coupling, the right output end of the double-axis motor 521 is fixedly connected to a rotating rod 2 523 rotatably connected to the shell 2 through a coupling, a fixed block 524 is fixedly connected to the lower inner surface of the shell 2, the left end of the fixed block 524 penetrates and extends to the right end of the shell 2 and is rotatably connected to a threaded rod 1 525, and the outer surface of the threaded rod 1 525 and the outer surface of the rotating rod 2 523 are fixedly connected to a pulley group 526.

[0023] For further information, see Figure 3 , Figure 5 and Figure 6 In this embodiment, the pushing mechanism 53 includes an oil tank 531 fixedly connected to the lower part of the inner surface of the outer shell 2, a slider 532 is threadedly connected to the outer surface of the threaded rod 525, an extrusion plate 533 slidably connected to the inner surface of the oil tank 531 is fixedly connected to the upper end of the slider 532, a hollow cylinder 534 rotatably connected to the rotating rod 522 is fixedly connected to the inner surface of the outer shell 2, a push ring 537 is slidably connected to the inner surface of the hollow cylinder 534, a connecting pipe 535 is fixedly connected to the right part of the inner surface of the hollow cylinder 534 and extends to the left part of the inner surface of the oil tank 531, and a plurality of balls 536 are arranged on the inner surface of the push ring 537.

[0024] During the implementation process, when it is necessary to internally support the hydraulic cylinder, the right end output end of the dual-axis motor 521 is started to drive the rotating rod 2 523 to rotate through the coupling, and the threaded rod 1 525 is driven to rotate under the transmission action of the pulley group 526. Since the threaded rod 1 525 and the slider 532 are threadedly connected, when the slider 532 moves to the right, the extrusion plate 533 is pushed to squeeze the hydraulic oil in the oil tank 531 into the hollow cylinder 534 through the connecting pipe 535, and the push ring 537 is pushed to move to the right under the action of the hydraulic pressure to cooperate with the subsequent internal support operation.

[0025] 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.

[0026] The pulley assembly 526 mentioned above is composed of two pulleys and a belt.

[0027] For further information, see Figure 3 and Figure 7 In this embodiment, the internal support mechanism 54 includes a notch block 541 fixedly connected to the outer surface of the rotating rod 522, the inner surface of the rotating rod 522 is slidably connected to the notch block 542, the inner surfaces of the notch block 541 and the notch block 542 are both annularly and equidistantly distributed and fixedly connected with four support rods 543, the outer surfaces of the support rods 543 on the same side are rotatably connected with the support block 544, the left part of the inner surface of the rotating rod 522 is fixedly connected to a telescopic rod 545 fixedly connected to the left end of the notch block 542, the outer surface of the telescopic rod 545 is equipped with a spring 546, and the two ends of the spring 546 are respectively fixedly connected to the inner surface of the rotating rod 522 and the left end of the notch block 542.

[0028] During the implementation process, as the push ring 537 moves to the right, the ball 536 at the right end of the push ring 537 will gradually cling to the right end of the notch block 2 542, and under the action of the hydraulic pressure, the notch block 2 542 is pushed to move to the right, so that the telescopic rod 545 and the spring 546 are in a compressed state, thereby causing the support rod 543 to rotate toward the middle relative to each other, so that the support block 544 can cling to the inner surface of the hydraulic cylinder, and the hydraulic cylinder is fixed. By starting the left end output end of the dual-axis motor 521 to drive the rotating rod 1 522 to rotate through the coupling, the hydraulic cylinder fixed on the inner support mechanism 54 is rotated, and the welding assembly 4 is used to weld the hydraulic cylinder, and the hydraulic cylinder can be fixed. Precise positioning and rotation can be performed in the state to provide stable support for the welding operation and ensure that the cylinder is not easy to move or deflect, so that the welding process is more precise and stable, and welding defects caused by vibration or deviation are reduced. The auxiliary role of the hydraulic system can effectively control the welding position and angle to ensure the stability of welding quality and effect. At the same time, the rotation of the hydraulic cylinder can make the welding process more uniform and comprehensive. Through rotation, various parts of the hydraulic cylinder can be evenly exposed to the welding area to ensure uniform distribution of welding heat and materials, thereby improving welding quality. Rotation can also avoid incomplete welding due to fixed angles, ensure the consistency and strength of the welding effect of each connection part, and reduce welding defects caused by local overheating or overcooling.

[0029] Embodiment 2: Based on Embodiment 1, this embodiment adds a support assembly 6 for supporting the hydraulic cylinder, so as to achieve the purpose of supporting one side of the outer surface of the hydraulic cylinder.

[0030] Specifically, in order to support one side of the outer surface of the hydraulic cylinder, refer to Figure 8 In this embodiment, the support assembly 6 includes a rectangular frame 61 fixedly connected to the upper end of the base 1 , a lifting mechanism 62 is provided on the inner surface of the rectangular frame 61 , and a cleaning mechanism 63 is provided at the front end of the rectangular frame 61 .

[0031] For further information, see Figure 8 In this embodiment, the lifting mechanism 62 includes a partition 621 fixedly connected to the inner surface of the rectangular frame 61, the inner surface of the rectangular frame 61 is rotatably connected to a transmission rod 622, the inner surface of the partition 621 is rotatably connected to a threaded rod 624, the outer surface of the transmission rod 622 and the outer surface of the threaded rod 624 are jointly fixedly connected to a gear set 623, the outer surface of the threaded rod 624 is threadedly connected to a push plate 625 slidably connected to the rectangular frame 61, and the inner surface of the push plate 625 is linearly and equidistantly distributed and rotatably connected to rollers 626.

[0032] During the implementation process, in order to support and maintain the balance of one side of the hydraulic cylinder, the transmission rod 622 is rotated, and the threaded rod 624 is driven to rotate under the transmission action of the gear set 623. Since the push plate 625 and the threaded rod 624 are threadedly connected, the push plate 625 can move upward, so that the outer surface of the roller 626 can contact the lower part of the outer surface of the hydraulic cylinder, supporting the hydraulic cylinder and keeping the hydraulic cylinder balanced and stable during the rotation welding process, thereby maintaining balance and stability during the welding process, ensuring that the hydraulic cylinder is not easily offset or vibrated during rotation, avoiding welding position deviation or quality problems caused by instability, ensuring the accuracy and consistency of the welding process, improving the welding quality, and reducing welding defects or deformation caused by imbalance.

[0033] The gear set 623 mentioned above is composed of two bevel gears in the prior art.

[0034] For further information, see Figure 8 In this embodiment, the cleaning mechanism 63 includes a flexible support rod 631 fixedly connected to the front end of the rectangular frame 61, and one end of the flexible support rod 631 away from the rectangular frame 61 is fixedly connected to a mounting frame 632, and a sponge block 633 is fixedly installed on the inner surface of the mounting frame 632.

[0035] During the implementation process, the flexible support rod 631 is rotated so that the sponge block 633 can be closely attached to the outer surface of the hydraulic cylinder, so that the debris attached to the outer surface of the hydraulic cylinder can be effectively cleaned before the rotation welding, and the surface of the hydraulic cylinder is ensured to be clean and flat before welding to avoid debris interfering with the welding process and reduce the risk of welding defects. The cleaned surface is conducive to good adhesion and uniform melting of the welding material, thereby improving the welding quality and ensuring the strength and durability of the welded connection.

[0036] The flexible support rod 631 mentioned above is a mature technical means in the prior art, adopts a hose-type design, and can be freely bent and adjusted at multiple angles. Its internal structure, principle and connection method will not be elaborated again.

[0037] Working process: When in use, the inner surface of the hydraulic cylinder is supported by the cooperation of the driving mechanism 52, the pushing mechanism 53 and the inner supporting mechanism 54, and the outer surface of the other side of the hydraulic cylinder is supported by the lifting mechanism 62. Then, the hydraulic cylinder is driven to rotate by the driving mechanism 52, and the debris attached to the outer surface of the hydraulic cylinder is cleaned during the rotation by the cleaning mechanism 63.

[0038] 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 welding device for a hydraulic cylinder, comprising a base (1), characterized in that: The upper end of the base (1) is fixedly connected to a housing (2), a control box (3) is fixedly mounted on the front end of the housing (2), a welding assembly (4) is fixedly mounted on the rear portion of the upper end of the base (1), a rotating assembly (5) is commonly provided on the inner surface and the left end of the housing (2), and a supporting assembly (6) is provided on the upper end of the base (1).

2. A welding device for a hydraulic cylinder according to claim 1, characterized in that: The rotating assembly (5) comprises a circular plate (51) fixedly connected to the left end of the outer shell (2); a driving mechanism (52) is provided on the upper inner surface of the outer shell (2); an inner support mechanism (54) is provided on the outer surface of the driving mechanism (52); and a pushing mechanism (53) is provided on the lower inner surface of the outer shell (2).

3. A welding device for a hydraulic cylinder according to claim 2, characterized in that: The driving mechanism (52) comprises a double-axis motor (521) fixedly connected to the upper inner surface of the housing (2); the left output end of the double-axis motor (521) is fixedly connected to a rotating rod (522) via a coupling; the right output end of the double-axis motor (521) is fixedly connected to a rotating rod (523) rotatably connected to the housing (2) via a coupling; a fixing block (524) is fixedly connected to the lower inner surface of the housing (2); the left end of the fixing block (524) penetrates through and extends to the right end of the housing (2) and is rotatably connected to a threaded rod (525); and the outer surface of the threaded rod (525) and the outer surface of the rotating rod (523) are fixedly connected to a pulley group (526).

4. A welding device for a hydraulic cylinder according to claim 3, characterized in that: The pushing mechanism (53) comprises an oil tank (531) fixedly connected to the lower part of the inner surface of the outer shell (2); a slider (532) is threadedly connected to the outer surface of the threaded rod (525); an extrusion plate (533) is fixedly connected to the upper end of the slider (532) and is slidably connected to the inner surface of the oil tank (531); a hollow cylinder (534) rotatably connected to the rotating rod (522) is fixedly connected to the inner surface of the outer shell (2); a push ring (537) is slidably connected to the inner surface of the hollow cylinder (534); a connecting pipe (535) is fixedly connected to the right part of the inner surface of the hollow cylinder (534) passing through and extending to the left part of the inner surface of the oil tank (531); and a plurality of balls (536) are arranged on the inner surface of the push ring (537).

5. The welding device for a hydraulic cylinder according to claim 3, characterized in that: The inner support mechanism (54) comprises a notch block 1 (541) fixedly connected to the outer surface of the rotating rod 1 (522); the inner surface of the rotating rod 1 (522) is slidably connected to the notch block 2 (542); the inner surfaces of the notch block 1 (541) and the notch block 2 (542) are both annularly and equidistantly distributed and fixedly connected to four support rods (543); the outer surfaces of the support rods (543) on the same side are rotatably connected to a support block (544); the left part of the inner surface of the rotating rod 1 (522) is fixedly connected to a telescopic rod (545) fixedly connected to the left end of the notch block 2 (542); the outer surface of the telescopic rod (545) is equipped with a spring (546); the two ends of the spring (546) are respectively fixedly connected to the inner surface of the rotating rod 1 (522) and the left end of the notch block 2 (542).

6. The welding device for a hydraulic cylinder according to claim 1, characterized in that: The support assembly (6) comprises a rectangular frame (61) fixedly connected to the upper end of the base (1); a lifting mechanism (62) is provided on the inner surface of the rectangular frame (61); and a cleaning mechanism (63) is provided at the front end of the rectangular frame (61).

7. A welding device for a hydraulic cylinder according to claim 6, characterized in that: The lifting mechanism (62) comprises a partition (621) fixedly connected to the inner surface of the rectangular frame (61); the inner surface of the rectangular frame (61) is rotatably connected to a transmission rod (622); the inner surface of the partition (621) is rotatably connected to a second threaded rod (624); the outer surface of the transmission rod (622) and the outer surface of the second threaded rod (624) are jointly fixedly connected to a gear set (623); the outer surface of the second threaded rod (624) is threadedly connected to a push plate (625) slidably connected to the rectangular frame (61); and the inner surface of the push plate (625) is rotatably connected to rollers (626) distributed linearly and equidistantly.

8. A welding device for a hydraulic cylinder according to claim 7, characterized in that: The cleaning mechanism (63) comprises a flexible support rod (631) fixedly connected to the front end of the rectangular frame (61); one end of the flexible support rod (631) away from the rectangular frame (61) is fixedly connected to a mounting frame (632); a sponge block (633) is fixedly mounted on the inner surface of the mounting frame (632).

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