Metal machining lathe with scrap cleaning structure

By designing cleaning and vacuum cleaner mechanisms on the lathe, using the motor to drive the threaded rod and slider to drive the cleaning sponge for automatic cleaning, and driving the vacuum cleaner to move through bevel gears and screws, the waste cleaning process is not cleaned in time in metal processing. The problem of processing quality and safety is improved.

CN222175951UActive Publication Date: 2024-12-17ESTECH (SHANGHAI) MARINE EQUIPMENT CO LTD
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Patent Information

Application Number
CN202420604923.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-03-27
Publication Date
2024-12-17
Estimated Expiration
2034-03-27

AI Technical Summary

Technical Problem

The existing lathes cannot clean up waste in time during metal processing, resulting in blockage and affecting quality.

Method used

A lathe with a debris cleaning structure is designed, including a cleaning mechanism and a vacuum cleaner mechanism. The motor drives the threaded rod and slider to drive the cleaning sponge for cleaning, and the cleaning sponge is lifted by an electric telescopic rod, and the vacuum cleaner is combined with the vacuum cleaner mechanism to utilize bevel gears. The screw drives the vacuum cleaner to move, achieving automatic cleaning and dust reduction.

Benefits of technology

It effectively avoids blockage, improves processing quality and efficiency, and reduces the damage caused by dust to staff.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of metal processing, and discloses a metal processing lathe with a scrap cleaning structure, which comprises supporting legs, a table top is arranged on the top surfaces of the supporting legs, the bottom surface of the table top is fixedly connected with the top surfaces of the supporting legs, two vertical plates are arranged on the top surface of the table top, and the bottom surfaces of the vertical plates are fixedly connected with the top surface of the table top. A cleaning mechanism is arranged on the inner side face of the vertical plate, a dust suction mechanism is arranged on the rear side face of the table top, the cleaning mechanism comprises a driving part and a cleaning part, and the dust suction mechanism comprises a moving part and a dust suction part. According to the cleaning mechanism, a first motor in a driving part is utilized, so that the first motor drives a threaded rod to rotate, and a sliding block is driven when the threaded rod rotates, so that a table plate is driven to stably slide on a first sliding rail under the action of a first sliding seat when the sliding block moves, and therefore, the table plate is moved by utilizing an electric telescopic rod; and the electric telescopic rod drives the two sliding rods to ascend and descend under the action of the electric telescopic rod, so that the cleaning sponge is driven to clean.
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Description

Technical Field

[0001] The utility model relates to the technical field of metal processing, in particular to a metal processing lathe with a debris cleaning structure. Background Art

[0002] Lathes are mainly used to process various rotating surfaces and end faces of rotating bodies, such as turning internal and external cylindrical surfaces, conical surfaces, annular grooves and forming rotating surfaces, turning end faces and various commonly used threads. If equipped with process equipment, they can also process various special-shaped surfaces.

[0003] Compared with the existing technology: the existing lathe does not have the function of collecting the waste materials produced by processing, and when processing metal, it is not cleaned in time, resulting in blockage, etc., thus affecting the quality.

[0004] Therefore, a metal processing lathe having a chip cleaning structure is proposed. Utility Model Content

[0005] The utility model aims to provide a metal processing lathe with a debris cleaning structure to solve the problems raised in the above background technology.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solution: a metal processing lathe with a debris cleaning structure.

[0007] Preferably, it comprises supporting legs, the top surface of the supporting legs is provided with a table top, the bottom surface of the table top is fixedly connected to the top surface of the supporting legs, the top surface of the table top is provided with two vertical boards, the bottom surface of the vertical boards is fixedly connected to the top surface of the table top, the inner side surface of the vertical boards is provided with a cleaning mechanism, and the rear side surface of the table top is provided with a dust collection mechanism;

[0008] The cleaning mechanism comprises a driving part and a cleaning part;

[0009] The cleaning part is located on the inner side of the driving part;

[0010] The dust suction mechanism comprises a moving part and a dust suction part;

[0011] The dust collecting part is located on the top surface of the moving part.

[0012] Preferably, the driving part includes an L-shaped fixing plate, the bottom surface of the L-shaped fixing plate is fixedly connected to the top surface of the table top, a first motor is provided on the inner bottom surface of the L-shaped fixing plate, the bottom surface of the first motor is fixedly connected to the inner bottom surface of the L-shaped fixing plate, a threaded rod is provided on the front side surface of the first motor, the rear end surface of the threaded rod extends through and extends to the rear side surface of the L-shaped fixing plate, the rear end surface of the threaded rod is fixedly connected to the output end surface of the first motor, and the rear end surface of the threaded rod is threadedly connected to the inner wall of the L-shaped fixing plate.

[0013] Preferably, the front end face of the threaded rod is provided with a straight plate, the left side of the straight plate is fixedly connected to the right side of the left vertical plate, the front end face of the threaded rod is rotatably connected to the rear side of the straight plate through a bearing seat, and the threaded rod is driven by a first motor.

[0014] Preferably, the cleaning part includes two sliders, the inner walls of the two sliders are threadedly connected to the surface of the threaded rod, two first sliding seats are arranged on the right side of the two sliders, the inner sides of the two first sliding seats are arranged with first sliding rails, the bottom surfaces of the first sliding rails are fixedly connected to the top surface of the table, the inner sides of the two first sliding seats are slidably connected to the surface of the first sliding rails, and the sliding is stable through the first sliding seats and the first sliding rails.

[0015] Preferably, a table is provided on the top surface of the two first slide seats, and the bottom surface of the table is fixedly connected to the top surfaces of the two first slide seats and the top surfaces of the two sliders, an electric telescopic rod is provided on the top surface of the table, and the output end surface of the electric telescopic rod is slidably connected to the inner wall of the table, and two sliding rods are provided on the outer side surface of the electric telescopic rod, and the two sliding rods extend through and extend to the bottom of the two table plates, and the surfaces of the two sliding rods are slidably connected to the inner wall of the table plate, and two limit blocks are provided on the top surfaces of the two sliding rods, and the top ends of the two sliding rods are fixedly connected to the bottom surfaces of the two limit blocks, and they slide steadily through the sliding rods.

[0016] Preferably, the bottom end surfaces of the two slide bars are provided with cleaning sponges, the top surface of the cleaning sponge is fixedly connected to the bottom end surfaces of the two slide bars and the output end surface of the electric telescopic rod, and the cleaning sponge is driven by the electric telescopic rod and the slide bar.

[0017] Preferably, the moving part includes a supporting table, the front side surface of the supporting table is fixedly connected to the rear side surface of the table, two fixed plates are provided on the top surface of the supporting table, the bottom surfaces of the two fixed plates are fixedly connected to the top surface of the supporting table, a second motor is provided on the inner sides of the two fixed plates, the bottom surface of the second motor is fixedly connected to the top surface of the supporting table, a first bevel gear is provided on the output end surface of the second motor, the rear side surface of the first bevel gear is fixedly connected to the output end surface of the second motor, and is driven by the second motor.

[0018] Preferably, the dust suction part includes a second bevel gear, an outer end surface of the second bevel gear is meshed with the outer end surface of the first bevel gear, and the inner side surface of the second bevel gear is provided with a screw rod, and the screw rod extends through the outer side of the second bevel gear, and the surface of the screw rod is fixedly connected to the inner wall of the second bevel gear, and the outer end surface of the screw rod is rotatably connected to the inner sides of the two fixing plates through the bearing seat 2, and the surface of the screw rod is sleeved with a slide plate, and the inner wall of the slide plate is threadedly connected to the surface of the screw rod, and a dust collector is provided on the top surface of the slide plate, and the bottom surface of the dust collector is fixedly connected to the top surface of the slide plate, and a second slide seat is provided below the dust collector, and the inner side surface of the second slide seat is fixedly connected to the front side surface of the slide plate, and a second slide rail is provided on the inner side surface of the second slide seat, and the bottom surface of the second slide rail is fixedly connected to the supporting bottom plate, and the inner side surface of the second slide seat is slidably connected to the surface of the second slide rail, and the screw rod is driven by the second bevel gear so that the screw rod drives the fixing plate.

[0019] Compared with the prior art, the utility model has the following beneficial effects: the metal processing lathe with a debris cleaning structure,

[0020] 1) The cleaning mechanism utilizes the first motor in the driving part, so that the first motor drives the threaded rod to rotate, and when the threaded rod rotates, the slider is driven, so that when the slider moves, the table plate is driven to slide steadily on the first slide rail under the action of the first slide seat, so that the electric telescopic rod is used to drive the two slide rods to move up and down under the action of the electric telescopic rod, thereby driving the cleaning sponge to perform comprehensive cleaning to avoid clogging;

[0021] 2) The dust collecting mechanism utilizes the second motor in the moving part to make the second motor drive the first bevel gear to rotate, so that the first bevel gear drives the second bevel gear to drive the screw to rotate under the action of the second bevel gear, so that the screw drives the vacuum cleaner to move, reducing the harm of dust to the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;

[0023] Figure 2 It is a top-down perspective schematic diagram of the structure of the utility model;

[0024] Figure 3 It is a three-dimensional schematic diagram of the cleaning structure of the utility model;

[0025] Figure 4 This is a bottom-up stereoscopic schematic diagram of the cleaning structure of the utility model;

[0026] Figure 5 It is a three-dimensional schematic diagram of the dust collection structure of the utility model.

[0027] In the figure: 1 supporting leg, 2 table top, 3 vertical board, 4 cleaning mechanism, 41 driving unit, 42 cleaning unit, 411 L-shaped fixed plate, 412 first motor, 413 threaded rod, 414 straight plate, 421 sliding block, 422 first sliding seat, 423 first slide rail, 424 table, 425 electric telescopic rod, 426 sliding rod, 427 cleaning sponge, 5 dust collection mechanism, 51 moving unit, 52 dust collection unit, 511 fixed plate, 512 second motor, 513 first bevel gear, 521 second bevel gear, 522 screw rod, 523 sliding plate, 524 dust collector, 525 second slide seat, 526 second slide rail. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] Example 1: Please refer to Figure 1-Figure 4 The utility model provides a technical solution: a metal processing lathe with a debris cleaning structure; comprising a support leg 1, a table 2 is arranged on the top surface of the support leg 1, the bottom surface of the table 2 is fixedly connected to the top surface of the support leg 1, two vertical plates 3 are arranged on the top surface of the table 2, the bottom surface of the vertical plates 3 is fixedly connected to the top surface of the table 2, a cleaning mechanism 4 is arranged on the inner side surface of the vertical plates 3, and a dust suction mechanism 5 is arranged on the rear side surface of the table 2;

[0030] The cleaning mechanism 4 includes a driving part 41 and a cleaning part 42;

[0031] The cleaning portion 42 is located on the inner side of the driving portion 41;

[0032] The dust collecting mechanism 5 includes a moving part 51 and a dust collecting part 52;

[0033] The dust collecting portion 52 is located on the top surface of the moving portion 51 .

[0034] The driving part 41 includes an L-shaped fixing plate 411, the bottom surface of the L-shaped fixing plate 411 is fixedly connected to the top surface of the table 2, a first motor 412 is arranged on the inner bottom surface of the L-shaped fixing plate 411, the bottom surface of the first motor 412 is fixedly connected to the inner bottom surface of the L-shaped fixing plate 411, a threaded rod 413 is arranged on the front side surface of the first motor 412, the rear end surface of the threaded rod 413 extends through and extends to the rear side surface of the L-shaped fixing plate 411, the rear end surface of the threaded rod 413 is fixedly connected to the output end surface of the first motor 412, and the rear end surface of the threaded rod 413 is threadedly connected to the inner wall of the L-shaped fixing plate 411.

[0035] A straight plate 414 is disposed on the front end surface of the threaded rod 413, the left side surface of the straight plate 414 is fixedly connected to the right side surface of the left vertical plate 3, and the front end surface of the threaded rod 413 is rotatably connected to the rear side surface of the straight plate 414 through a bearing seat 1.

[0036] The cleaning part 42 includes two sliders 421, the inner walls of the two sliders 421 are threadedly connected to the surface of the threaded rod 413, two first slide seats 422 are arranged on the right side of the two sliders 421, the inner sides of the two first slide seats 422 are arranged with first slide rails 423, the bottom surfaces of the first slide rails 423 are fixedly connected to the top surface of the table 2, and the inner sides of the two first slide seats 422 are slidably connected to the surface of the first slide rails 423.

[0037] A table 424 is provided on the top surfaces of the two first slide seats 422, and the bottom surface of the table 424 is fixedly connected to the top surfaces of the two first slide seats 422 and the top surfaces of the two sliders 421; an electric telescopic rod 425 is provided on the top surface of the table 424, and the output end surface of the electric telescopic rod 425 is slidably connected to the inner wall of the table 424; two sliding rods 426 are provided on the outer side surface of the electric telescopic rod 425, and the two sliding rods 426 extend through and extend to the bottom of the two table plates 424; the surfaces of the two sliding rods 426 are slidably connected to the inner wall of the table plate 424; two limit blocks are provided on the top surfaces of the two sliding rods 426, and the top ends of the two sliding rods 426 are fixedly connected to the bottom surfaces of the two limit blocks.

[0038] A cleaning sponge 427 is provided on the bottom end surfaces of the two sliding rods 426 , and the top surface of the cleaning sponge 427 is fixedly connected to the bottom end surfaces of the two sliding rods 426 and the output end surface of the electric telescopic rod 425 .

[0039] Furthermore, in this embodiment, the cleaning mechanism 4 utilizes the first motor 412 in the driving part 41, so that the first motor 412 drives the threaded rod 413 to rotate, and when the threaded rod 413 rotates, the slider 421 is driven, so that when the slider 421 moves, the table 424 is driven to slide steadily on the first slide rail 423 under the action of the first slide seat 422, so that 424 moves, and the electric telescopic rod 425 is utilized, so that the electric telescopic rod 425 drives the two slide rods 426 to be lifted and lowered under the action of the electric telescopic rod 425, thereby driving the cleaning sponge 427 to clean;

[0040] Furthermore, this embodiment utilizes the first motor 412 in the driving part 41 through the cleaning mechanism 4, so that the first motor 412 drives the threaded rod 413 to rotate, so that when the threaded rod 413 rotates, it drives the table 424 to move under the action of the first slide 422, so that the electric telescopic rod 425 is utilized to make the electric telescopic rod 512 so that the second slide 525 drives the two slides 426 to be pressed down, so that the slide 426 drives the cleaning sponge 427 to clean, and then the waste remaining on the upper end of the table 2 is cleaned up without the operator manually picking it up, thereby improving the cleaning efficiency and facilitating use.

[0041] Example 2: Please refer to Figure 1 , Figure 2 , Figure 5 , and on the basis of Example 1, it is further obtained that: the moving part 51 includes a supporting table, the front side surface of the supporting table is fixedly connected to the rear side surface of the table 2, two fixed plates 511 are arranged on the top surface of the supporting table, the bottom surfaces of the two fixed plates 511 are fixedly connected to the top surface of the supporting table, a second motor 512 is arranged on the inner side of the two fixed plates 511, the bottom surface of the second motor 512 is fixedly connected to the top surface of the supporting table, a first bevel gear 513 is arranged on the output end surface of the second motor 512, and the rear side surface of the first bevel gear 513 is fixedly connected to the output end surface of the second motor 512.

[0042] The dust collecting part 52 includes a second bevel gear 521, the outer end surface of the second bevel gear 521 is meshed with the outer end surface of the first bevel gear 513, the inner side surface of the second bevel gear 521 is provided with a screw rod 522, the screw rod 522 extends through the outer side of the second bevel gear 521, the surface of the screw rod 522 is fixedly connected to the inner wall of the second bevel gear 521, the outer end surface of the screw rod 522 is rotatably connected to the inner side surfaces of the two fixing plates 511 through the bearing seat 2, and the surface of the screw rod 522 is sleeved with a slide plate 523, and the slide plate 523 The inner wall is threadedly connected to the surface of the screw rod 522, a vacuum cleaner 524 is arranged on the top surface of the slide plate 523, the bottom surface of the vacuum cleaner 524 is fixedly connected to the top surface of the slide plate 523, a second slide seat 525 is arranged below the vacuum cleaner 524, the inner side surface of the second slide seat 525 is fixedly connected to the front side surface of the slide plate 523, a second slide rail 526 is arranged on the inner side surface of the second slide seat 525, the bottom surface of the second slide rail 526 is fixedly connected to the supporting bottom plate, and the inner side surface of the second slide seat 525 is slidably connected to the surface of the second slide rail 526.

[0043] Furthermore, in this embodiment, the dust collecting mechanism 5 utilizes the second motor 512 in the moving part 51 so that the second motor 512 drives the first bevel gear 513 to rotate, so that when the second motor 512 rotates, it drives the second bevel gear 521, so that the second bevel gear 521 drives the screw rod 522, so that the screw rod 522 drives the slide plate 523, so that the slide plate 523 drives the dust collector 524 to move stably on the surface of the second slide rail 526 under the action of the second slide seat 525;

[0044] Furthermore, in this embodiment, the dust collection mechanism 5 utilizes the second motor 512 in the moving part 51 so that the second motor 512 drives the first bevel gear 513 to rotate, so that the first bevel gear 513 drives the second bevel gear 521 to rotate under the action of the second bevel gear 521, so that the screw rod 522 drives the vacuum cleaner 524 to move, thereby reducing the harm of dust to the staff.

[0045] When in use, after the processing is completed, the operator uses the first motor 412 in the driving part 41 through the cleaning mechanism 4, so that the first motor 412 drives the threaded rod 413 to rotate. When the threaded rod 413 rotates, it drives the slider 421, so that when the slider 421 moves, it drives the table 424 to slide steadily on the first slide rail 423 under the action of the first slide seat 422, so that 424 moves, and then the electric telescopic rod 425 is used, so that the electric telescopic rod 425 drives the two slide rods 426 to move up and down under the action of the electric telescopic rod 425, thereby driving the cleaning sponge 427 to clean, and when dust is generated, the dust collection mechanism 5 uses the second motor 512 in the moving part 51 to make the second motor 512 drive the first bevel gear 513 to rotate, so that when the second motor 512 rotates, it drives the second bevel gear 521, so that the second bevel gear 521 drives the screw rod 522, so that the screw rod 522 drives the slide plate 523, so that the slide plate 523 drives the vacuum cleaner 524 to move steadily on the surface of the second slide rail 526 under the action of the second slide seat 525, thereby preventing dust from affecting the body.

[0046] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A metal processing lathe with a chip cleaning structure, comprising a support leg (1), characterized in that: The top surface of the support leg (1) is provided with a table top (2), the bottom surface of the table top (2) is fixedly connected to the top surface of the support leg (1), the top surface of the table top (2) is provided with two vertical boards (3), the bottom surface of the vertical boards (3) is fixedly connected to the top surface of the table top (2), the inner side surface of the vertical boards (3) is provided with a cleaning mechanism (4), and the rear side surface of the table top (2) is provided with a dust collection mechanism (5); The cleaning mechanism (4) comprises a driving part (41) and a cleaning part (42); The cleaning portion (42) is located on the inner side of the driving portion (41); The dust suction mechanism (5) comprises a moving part (51) and a dust suction part (52); The dust suction portion (52) is located on the top surface of the moving portion (51).

2. A metal processing lathe with a chip cleaning structure according to claim 1, characterized in that: The driving part (41) comprises an L-shaped fixing plate (411), the bottom surface of the L-shaped fixing plate (411) being fixedly connected to the top surface of the table top (2), a first motor (412) being arranged on the inner bottom surface of the L-shaped fixing plate (411), the bottom surface of the first motor (412) being fixedly connected to the inner bottom surface of the L-shaped fixing plate (411), a threaded rod (413) being arranged on the front side surface of the first motor (412), the rear end surface of the threaded rod (413) extending through and extending to the rear side surface of the L-shaped fixing plate (411), the rear end surface of the threaded rod (413) being fixedly connected to the output end surface of the first motor (412), and the rear end surface of the threaded rod (413) being threadedly connected to the inner wall of the L-shaped fixing plate (411).

3. A metal processing lathe with a chip cleaning structure according to claim 2, characterized in that: The front end surface of the threaded rod (413) is provided with a straight plate (414), the left side surface of the straight plate (414) is fixedly connected to the right side surface of the left vertical plate (3), and the front end surface of the threaded rod (413) is rotatably connected to the rear side surface of the straight plate (414) via a bearing seat 1.

4. A metal processing lathe with a chip cleaning structure according to claim 3, characterized in that: The cleaning portion (42) comprises two sliders (421), the inner walls of the two sliders (421) being threadedly connected to the surface of the threaded rod (413), two first slide seats (422) being arranged on the right side of the two sliders (421), the inner side surfaces of the two first slide seats (422) being arranged with first slide rails (423), the bottom surfaces of the first slide rails (423) being fixedly connected to the top surface of the table top (2), and the inner side surfaces of the two first slide seats (422) being slidably connected to the surface of the first slide rails (423).

5. The metal processing lathe with a chip cleaning structure according to claim 4, characterized in that: A table (424) is arranged on the top surface of the two first slide seats (422); the bottom surface of the table (424) is fixedly connected to the top surfaces of the two first slide seats (422) and the top surfaces of the two sliders (421); an electric telescopic rod (425) is arranged on the top surface of the table (424); the output end surface of the electric telescopic rod (425) is slidably connected to the inner wall of the table (424); two slide rods (426) are arranged on the outer side surface of the electric telescopic rod (425); the two slide rods (426) extend through and extend to the bottom of the two table plates (424); the surfaces of the two slide rods (426) are slidably connected to the inner wall of the table (424); two limit blocks are arranged on the top surfaces of the two slide rods (426); the top ends of the two slide rods (426) are fixedly connected to the bottom surfaces of the two limit blocks.

6. A metal processing lathe with a chip cleaning structure according to claim 5, characterized in that: The bottom end surfaces of the two sliding rods (426) are provided with cleaning sponges (427), and the top surface of the cleaning sponge (427) is fixedly connected to the bottom end surfaces of the two sliding rods (426) and the output end surface of the electric telescopic rod (425).

7. The metal processing lathe with a chip cleaning structure according to claim 1, characterized in that: The movable part (51) comprises a supporting table, the front side surface of the supporting table is fixedly connected to the rear side surface of the table (2), two fixing plates (511) are arranged on the top surface of the supporting table, the bottom surfaces of the two fixing plates (511) are fixedly connected to the top surface of the supporting table, a second motor (512) is arranged on the inner side of the two fixing plates (511), the bottom surface of the second motor (512) is fixedly connected to the top surface of the supporting table, a first bevel gear (513) is arranged on the output end surface of the second motor (512), and the rear side surface of the first bevel gear (513) is fixedly connected to the output end surface of the second motor (512).

8. The metal processing lathe with a chip cleaning structure according to claim 7, characterized in that: The dust collecting part (52) comprises a second bevel gear (521), the outer end surface of the second bevel gear (521) is meshingly connected with the outer end surface of the first bevel gear (513), the inner side surface of the second bevel gear (521) is provided with a screw rod (522), the screw rod (522) extends through the outer side of the second bevel gear (521), the surface of the screw rod (522) is fixedly connected with the inner wall of the second bevel gear (521), the outer end surface of the screw rod (522) is rotatably connected with the inner side surfaces of the two fixing plates (511) through the bearing seat 2, the surface of the screw rod (522) is sleeved with a slide plate (523), and the slide plate (523) is provided on the inner side surface of the second bevel gear (521). 3) The inner wall is threadedly connected to the surface of the screw rod (522); a vacuum cleaner (524) is arranged on the top surface of the slide plate (523); the bottom surface of the vacuum cleaner (524) is fixedly connected to the top surface of the slide plate (523); a second slide seat (525) is arranged below the vacuum cleaner (524); the inner side surface of the second slide seat (525) is fixedly connected to the front side surface of the slide plate (523); a second slide rail (526) is arranged on the inner side surface of the second slide seat (525); the bottom surface of the second slide rail (526) is fixedly connected to the supporting bottom plate; the inner side surface of the second slide seat (525) is slidably connected to the surface of the second slide rail (526).