Vehicle maintenance shielding device with dustproof function

Abstract

The invention provides a vehicle maintenance shielding device with a dustproof function, and relates to the technical field of new energy vehicle maintenance, the vehicle maintenance shielding device comprises a shielding cover body, the shielding cover body comprises middle-layer shielding cloth and top shielding cloth, and second supporting legs are fixedly mounted in four corners of the middle-layer shielding cloth; an upper supporting leg is rotationally installed above each second supporting leg, a bottom supporting leg is arranged below each second supporting leg, the electric shielding door is reset, then a user can maintain the new energy automobile in the shielding cover body, four purifiers are arranged at the four corners of the middle-layer shielding cloth, and therefore the new energy automobile can be maintained conveniently. The four purifiers can purify dust in the shielding cover body in real time, meanwhile, the shielding cover body is formed by sleeving the bottom apron cover, the second inserting groove, the connecting apron cover and the top shielding cloth layer by layer, the shielding cover body is good in overall sealing performance and high in dustproof capacity, maintenance of new energy is facilitated, and a good shielding effect is provided for maintenance of the new energy.

Description

Technical Field

[0001] The present invention belongs to the technical field of new energy vehicle maintenance, and more specifically, particularly relates to a vehicle maintenance shielding device with a dustproof function. Background Art

[0002] In the field of new energy vehicle maintenance, it is very important to provide a good maintenance environment for the vehicle. However, the existing automobile shielding covers have many shortcomings.

[0003] Traditional car shields are often simple in structure design and have poor sealing, resulting in unsatisfactory dust-proof effects. Dust in the air can easily enter the interior of the shield, affecting the progress and quality of maintenance work.

[0004] The bottom of the shielding cover that contacts the ground usually lacks an effective dust-proof design, which makes it easy for dust to enter from the bottom gap, thereby reducing the overall dust-proof performance.

[0005] In terms of stability, the existing shield support structure is relatively simple. When faced with different ground conditions and wind forces, it is prone to shaking or even tipping over, and cannot provide a stable and reliable environment for maintenance work.

[0006] In addition, existing shielding covers are not strong enough in terms of wind resistance. When encountering strong winds, they are easily deformed or damaged, which not only affects their normal shielding function, but may also cause safety hazards to vehicles and maintenance personnel.

[0007] Moreover, the protection and dust-proof design on the top of the shielding cover is not perfect enough to effectively cope with complex environmental conditions and wind influences, and it is difficult to meet the strict requirements of new energy vehicle maintenance for dust-proof, wind-resistant and other aspects. Summary of the invention

[0008] In order to solve the above technical problems, the present invention provides a vehicle maintenance shielding device with dustproof function to solve the above problems.

[0009] A vehicle maintenance shielding device with a dustproof function comprises a shielding cover body, the shielding cover body comprises a middle shielding cloth and a top shielding cloth, second supporting legs are fixedly installed in the four corners of the middle shielding cloth, an upper supporting leg is rotatably installed above each of the second supporting legs, a bottom supporting leg is arranged below each of the second supporting legs, a variable foot leg is arranged below each of the bottom supporting legs, a second supporting surface is arranged inside the shielding cover body near the top of the shielding cover body, a steel frame is fixedly installed on the side wall of each of the second supporting legs, and the tops of the four steel frames are fixedly connected to the bottom of the second supporting surface, at least two fixing frames are fixedly installed on the four sides of the top shielding cloth, and every two fixing frames form a group, a louver shielding cloth is arranged between each group of two fixing frames, and a first deformable shielding cloth is arranged between the two groups of fixing frames as a whole.

[0010] Preferably, each of the upper support legs is fixedly mounted on a side wall near the top of the first connecting frame, and each of the first connecting shaft is rotatably mounted below the upper support leg and between the second support leg, the first connecting shaft being a combination of a rotating shaft and a torsion spring, and when the winding belt does not pull up the support leg, the first connecting shaft can keep the upper support leg and the second support leg in a vertical state, and each of the bottom support legs is rotatably mounted between the bottom and the variable leg, and each of the bottom support legs is fixedly mounted with a cylinder, and each end of the cylinder output shaft is fixedly mounted with a support frame, and the cylinder is located on the side of the second connecting shaft, a limiting rod is fixedly mounted on the top of each of the variable leg, and the limiting rod is located on the rear side of the second connecting shaft, a second supporting surface and a first supporting surface are provided below each of the variable leg, and the first supporting surface is located on the front side of the second supporting surface, and a bevel groove is provided on the side wall of each of the variable leg located above the first supporting surface.

[0011] Preferably, at least two motors are fixedly installed below the second supporting surface, and a winding belt is installed between the shaft end of each motor and the first connecting frame, and the winding belt is used to control the rotation angle of the upper supporting leg. The shielding cover body also includes a bottom apron cover, a connecting apron cover and an electric shielding door. The bottom apron cover is fixed outside the middle shielding cloth and is located below the middle shielding cloth. The connecting apron cover is fixed between the top shielding cloth and the middle shielding cloth. The inner walls of the four corners of the top shielding cloth are provided with a first slot and a second slot, and the first slot is located at the connection between the upper supporting leg and the second supporting leg, and the second slot is located at the first connecting frame.

[0012] Preferably, a connecting piece is fixedly installed on the back side of each of the fixing frames, each of the connecting pieces is fixedly connected to the surface of the middle-layer shielding cloth, a side fixing frame is fixedly installed on the surface of each of the fixing frames, the first deformable shielding cloth is located between the two side fixing frames, each of the two side walls of the first deformable shielding cloth is fixedly installed with a connecting rod, and a spring is fixedly installed between each connecting rod and the inner wall of the side fixing frame, a second deformable shielding cloth is fixedly installed in the middle part of each of the first deformable shielding cloth, at least two grooves are provided on the two side surfaces of each of the louver shielding cloth, at least two outer openings are provided on the front side surface of each of the louver shielding cloth, at least two inner openings are provided on the rear side wall surface of each of the louver shielding cloth, and the outer openings and the inner openings are connected to each other.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] In the present invention, the driving motor on the top of the electric shielding door drives the electric shielding door to rotate upward, and then the new energy vehicle is driven into the shielding cover body, and then the electric shielding door is reset. Then the user can repair the new energy vehicle in the shielding cover body. Four purifiers are arranged at the four corners of the middle shielding cloth. The four purifiers can purify the dust in the shielding cover body in real time. At the same time, the shielding cover body adopts a bottom apron cover, a second slot, a connecting apron cover and a top shielding cloth to be arranged in layers. The overall sealing of the shielding cover body is good, and the dustproof ability is strong, which is helpful for the maintenance of new energy and provides a better shielding effect for the maintenance of new energy.

[0015] In the present invention, a bottom apron cover is used to shield the lower part of the middle shielding cloth. The bottom apron cover is bent to a certain extent after contacting the ground, which can increase the contact area with the ground and improve the dustproof performance of the bottom of the shielding cover body. The top shielding cloth and the middle shielding cloth are connected by a connecting apron cover, which can improve the dustproof effect of the top shielding cloth when it is bent. At the same time, the two sides of the electric shielding door are tightly closed to the shielding cover body as a whole, which can further improve the dustproof ability.

[0016] In the present invention, the cylinder is started to drive the support frame to move downward through the output shaft, and the downward movement of the support frame pushes the inclined slot to move downward, and the variable leg is forced to rotate. After the variable leg rotates backward sixty degrees, the variable leg contacts the ground with the first supporting surface. At this time, the contact area between the first supporting surface and the ground is larger. After the four second supporting legs are deformed in this way, a larger quadrilateral foundation is formed at the bottom, which increases the contact area and stability with the ground, and the bottom apron cover can cooperate well with the change of the second supporting leg, thereby increasing the overall stability while not reducing the dustproof effect.

[0017] In the present invention, the winding of the winding belt drives the first connecting frame of the side wall of the upper supporting leg to move toward the second supporting surface, and the upper supporting leg rotates above the first connecting axis. At the same time, the rotation of the upper supporting leg will drive the four corners of the top shielding cloth to retract toward the center of the shielding cover body. The user can adjust the winding length of the winding belt according to the size of the wind force. The four steel frames can play a certain protective role on the deformed top shielding cloth. At the same time, the overall shape is a pyramid. This triangular structure has high stability in mechanics, can effectively disperse the pressure caused by wind force, reduce structural shaking, form multiple stable triangular areas, and further enhance the overall wind resistance.

[0018] In the present invention, a plurality of grooves are provided on the surface of the louver shielding cloth. At this time, the louver shielding cloth will stretch, and the plurality of louver shielding cloths on the surface of the shielding cover body will stretch to cover the surface of the top shielding cloth. At this time, the surface of the top shielding cloth forms a double-layer protection, which further improves the dustproof effect. Moreover, there is an inclined angle between each fixing frame and the connecting part, so the upper and lower groups of louver shielding cloths will form an overlapping covering state, thereby improving the protection ability of the surface of the top shielding cloth. The edges of each layer of louver shielding cloth can adopt a staggered design to avoid gaps and further improve the dustproof performance.

[0019] In the present invention, the first deformable shielding cloth between the two fixing frames can be stretched left and right, and the second deformable shielding cloth arranged in the middle of the first deformable shielding cloth can be stretched up and down, thereby improving the multi-directional deformation ability, and the springs between the two sides of the first deformable shielding cloth and the side fixing frames can further improve the pulling resistance of the first deformable shielding cloth, improve the deformation fit, and further ensure that the top shielding cloth can still complete the repeated covering of the louver shielding cloth and the first deformable shielding cloth after deformation, thereby improving the dustproof and windproof capabilities. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the middle layer shielding cloth of the present invention;

[0021] Figure 2 It is a schematic diagram of the structure of the upper supporting leg of the present invention;

[0022] Figure 3 It is a schematic diagram of the steel frame structure of the present invention;

[0023] Figure 4 is a schematic structural diagram of the second supporting leg of the present invention;

[0024] Figure 5 is a schematic diagram of the structure of the second supporting surface of the present invention;

[0025] Figure 6 It is a schematic diagram of the variable leg structure of the present invention;

[0026] Figure 7It is a schematic diagram of the structure of the shielding cover body of the present invention;

[0027] Figure 8 It is a schematic diagram of the top shielding cloth structure of the present invention;

[0028] Fig. 9 It is a schematic diagram of the structure of the fixing frame of the present invention;

[0029] Fig.10 It is a schematic diagram of the structure of the first deformable shielding cloth of the present invention;

[0030] Fig.11 It is a schematic diagram of the structure of the side fixing frame of the present invention;

[0031] Fig.12 It is a schematic diagram of the structure of the louver shielding cloth of the present invention.

[0032] In the figure, the corresponding relationship between the component names and the figure numbers is as follows: 1. Shielding cover body; 11. Bottom apron cover; 12. Connecting apron cover; 13. Top shielding cloth; 14. First slot; 15. Second slot; 16. Electric shielding door; 17. Purifier; 18. Middle shielding cloth; 2. Upper support leg; 21. First connecting frame; 23. Second supporting leg; 24. First connecting shaft; 25. Bottom supporting leg; 27. Cylinder; 28. Support frame ; 29. ​​Variable leg; 3. Second connecting shaft; 31. Limit rod; 32. Inclined slot; 33. First supporting surface; 34. Second supporting surface; 35. Motor; 36. Winding belt; 37. Steel frame; 4. Fixed frame; 41. Connecting piece; 43. Louver shielding cloth; 44. First deformable shielding cloth; 45. Second deformable shielding cloth; 46. Connecting rod; 47. Spring; 48. Side fixing frame; 49. Groove; 5. External opening; 51. Internal opening. DETAILED DESCRIPTION

[0033] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0034] See also Figure 1-Figure 12The present invention provides a vehicle maintenance shielding device with a dustproof function, comprising a shielding cover body 1, the shielding cover body 1 comprising a middle shielding cloth 18 and a top shielding cloth 13, second support legs 23 are fixedly installed in the four corners of the middle shielding cloth 18, an upper support leg 2 is rotatably installed above each second support leg 23, a bottom support leg 25 is arranged below each second support leg 23, a variable foot leg 29 is arranged below each bottom support leg 25, a second support surface 34 is arranged inside the shielding cover body 1 near the top of the shielding cover body 1, a cylinder 27 below the bottom support leg 25 is started, the cylinder 27 is started to drive the support frame 28 to move downward through the output shaft, and the support frame 28 moves downward to push the inclined groove 32 moves downward, and the variable leg 29 rotates under force. After the variable leg 29 rotates backward sixty degrees, the variable leg 29 contacts the ground with the first supporting surface 33. At this time, the contact area between the first supporting surface 33 and the ground is larger. After the four second supporting legs 23 are deformed in this way, a larger quadrilateral foundation is formed at the bottom. The side walls of each second supporting leg 23 are fixedly installed with a steel frame 37, and the tops of the four steel frames 37 are fixedly connected to the bottom of the second supporting surface 34. At least two fixing frames 4 are fixedly installed on the four sides of the top shielding cloth 13, and every two fixing frames 4 form a group. A louver shielding cloth 43 is arranged between each group of two fixing frames 4, and a first deformable shielding cloth 44 is arranged between the two groups of fixing frames 4 as a whole.

[0035] A first connecting frame 21 is fixedly installed on the side wall of each upper supporting leg 2 near the top, a first connecting shaft 24 is rotatably installed below each upper supporting leg 2 and between the second supporting leg 23, a second connecting shaft 3 is rotatably installed below each bottom supporting leg 25 and between the variable foot leg 29, the second connecting shaft 3 has the same structure as the first connecting shaft 24, and is composed of a rotating shaft and a torsion spring, a cylinder 27 is fixedly installed below each bottom supporting leg 25, a supporting frame 28 is fixedly installed at the end of the output shaft of each cylinder 27, and the cylinder 27 is located on the side of the second connecting shaft 3, the upper supporting leg 2 rotates above the first connecting shaft 24, and the rotation of the upper supporting leg 2 will drive the top shielding cloth 13 The four corners retract toward the center of the shielding cover body 1, and the user can adjust the length of the winding belt 36 according to the size of the wind force. The four steel frames 37 can play a certain protective role on the deformed top shielding cloth 13. At the same time, the overall shape is a pyramid. This triangular structure has high mechanical stability. A limit rod 31 is fixedly installed on the top of each variable leg 29, and the limit rod 31 is located on the rear side of the second connecting shaft 3. A second supporting surface 34 and a first supporting surface 33 are provided at the bottom of each variable leg 29, and the first supporting surface 33 is located on the front side of the second supporting surface 34. The side wall of each variable leg 29 above the first supporting surface 33 is provided with an inclined groove 32.

[0036] At least two motors 35 are fixedly installed below the second supporting surface 34, and a winding belt 36 is installed between the shaft end of each motor 35 and the first connecting frame 21, and the winding belt 36 is used to control the rotation angle of the upper supporting leg 2. The shielding cover body 1 also includes a bottom apron cover 11, a connecting apron cover 12 and an electric shielding door 16. Purifiers 17 are fixedly installed at the four corners of the middle shielding cloth 18. The bottom apron cover 11 is fixed outside the middle shielding cloth 18 and is located below the middle shielding cloth 18. Then, the new energy vehicle is driven into the shielding cover body 1, and the electric shielding door 16 is reset. Then the user can purify the new energy vehicle in the shielding cover body 1. For maintenance, four purifiers 17 are arranged at the four corners of the middle shielding cloth 18, and the four purifiers 17 can purify the dust in the shielding cover body 1 in real time. At the same time, the shielding cover body 1 adopts the bottom apron cover 11, the second slot 15, the connecting apron cover 12 and the top shielding cloth 13 to be arranged in layers, and the shielding cover body 1 has good overall sealing performance. The connecting apron cover 12 is fixed between the top shielding cloth 13 and the middle shielding cloth 18, and the inner walls of the four corners of the top shielding cloth 13 are provided with the first slot 14 and the second slot 15, and the first slot 14 is located at the connection between the upper support leg 2 and the second support leg 23, and the second slot 15 is located at the first connecting frame 21.

[0037] A connecting piece 41 is fixedly installed on the back of each fixing frame 4, and each connecting piece 41 is fixedly connected to the surface of the middle-layer shielding cloth 18. A side fixing frame 48 is fixedly installed on the surface of each fixing frame 4. The first deformable shielding cloth 44 is located between the two side fixing frames 48. A connecting rod 46 is fixedly installed on the two side walls of each first deformable shielding cloth 44, and a spring 47 is fixedly installed between each connecting rod 46 and the inner wall of the side fixing frame 48. Strong wind will blow into the outer opening 5 opened by the louver shielding cloth 43, and then be discharged through the inner opening 51. However, since the opening of the inner opening 51 is smaller than the outer opening 5, the wind will cause a certain pressure on the louver shielding cloth 43, and the louver shielding cloth 4 3 surface is provided with a plurality of grooves 49, at this time, the louver shielding cloth 43 will stretch, and the plurality of louver shielding cloths 43 on the surface of the shielding cover body 1 will stretch to cover the surface of the top shielding cloth 13, at this time, the surface of the top shielding cloth 13 forms a double-layer protection, and the dustproof effect is further improved, and a second deformable shielding cloth 45 is fixedly installed in the middle of each first deformable shielding cloth 44, and at least two grooves 49 are provided on both side surfaces of each louver shielding cloth 43, and at least two outer openings 5 ​​are provided on the front side surface of each louver shielding cloth 43, and at least two inner openings 51 are provided on the rear side wall surface of each louver shielding cloth 43, and the outer opening 5 and the inner opening 51 are connected.

[0038] Working principle:

[0039] The first step is to start the electric shielding door 16 (a driving motor is arranged inside the top of the electric shielding door 16) when repairing the new energy vehicle. The driving motor on the top of the electric shielding door 16 drives the electric shielding door 16 to rotate upward. Then the new energy vehicle is driven into the shielding cover body 1, and the electric shielding door 16 is reset. Then the user can repair the new energy vehicle inside the shielding cover body 1. Four purifiers 17 are arranged at the four corners of the middle shielding cloth 18. The four purifiers 17 can purify the dust inside the shielding cover body 1 in real time. At the same time, the shielding cover body 1 adopts the bottom apron cover 11, the second slot 15, the connecting apron cover 12 and the top shielding cloth 13 to be arranged in layers. The shielding cover body 1 has good overall sealing and strong dustproof ability, which is helpful for the maintenance of new energy and provides a better shielding effect for the maintenance of new energy.

[0040] In the second step, the bottom apron cover 11 is used to shield the lower part of the middle shielding cloth 18. The bottom apron cover 11 is bent to a certain extent after contacting the ground, which can increase the contact area with the ground and improve the dustproof performance of the bottom of the shielding cover body 1. The top shielding cloth 13 and the middle shielding cloth 18 are connected by a connecting apron cover 12, which can improve the dustproof effect of the top shielding cloth 13 when bending. At the same time, the two sides of the electric shielding door 16 are tightly closed with the shielding cover body 1 as a whole, which can further improve the dustproof ability.

[0041] The third step is that under normal circumstances, the variable leg 29 and the bottom support leg 25 are in a vertical state, and the second support surface 34 at the bottom of the variable leg 29 is in contact with the ground. When strong winds occur, the cylinder 27 under the bottom support leg 25 is started, and the cylinder 27 is started to drive the support frame 28 to move downward through the output shaft. The support frame 28 moves downward and pushes the inclined slot 32 to move downward, and the variable leg 29 is rotated by force. After the variable leg 29 rotates backward sixty degrees, the variable leg 29 contacts the ground with the first support surface 33. At this time, the contact area between the first support surface 33 and the ground is larger. After the four second support legs 23 are deformed in this way, a larger quadrilateral foundation is formed at the bottom, which increases the contact area and stability with the ground, and the bottom apron cover 11 can well cooperate with the change of the second support leg 23, thereby increasing the overall stability while not reducing the dustproof effect.

[0042] When the wind is strong, the four motors 35 at the bottom of the second support surface 34 are started, and the four motors 35 drive the winding belt 36 to be wound through the shaft frame. The winding belt 36 drives the first connecting frame 21 of the side wall of the upper support leg 2 to move toward the second support surface 34, and the upper support leg 2 rotates above the first connecting shaft 24. At the same time, the rotation of the upper support leg 2 will drive the four corners of the top shielding cloth 13 to retract toward the center of the shielding cover body 1. The user can adjust the winding length of the winding belt 36 according to the size of the wind. The four steel frames 37 can play a certain protective role on the deformed top shielding cloth 13. At the same time, the overall pyramid shape, this triangular structure has high mechanical stability, can effectively disperse the pressure caused by wind, reduce structural shaking, form multiple stable triangular areas, and further enhance the overall wind resistance.

[0043] When the upper supporting leg 2 rotates, the first slot 14 and the second slot 15 provided on the top shielding cloth 13 can improve the convenience of bending the upper supporting leg 2, reduce the damage to the top shielding cloth 13 caused by the rotation of the upper supporting leg 2, and improve the overall deformation ability;

[0044] In windy weather, the strong wind will quickly blow toward the surface of the top shielding cloth 13, and the strong wind will blow into the outer opening 5 opened by the blind shielding cloth 43, and then be discharged through the inner opening 51. However, since the inner opening 51 is smaller than the outer opening 5, the wind will cause a certain pressure on the blind shielding cloth 43. The blind shielding cloth 43 is provided with a plurality of grooves 49. At this time, the blind shielding cloth 43 will stretch, and the plurality of blind shielding cloths 43 on the surface of the shielding cover body 1 will stretch to cover the surface of the top shielding cloth 13. At this time, the surface of the top shielding cloth 13 forms a double-layer protection, which further improves the dustproof effect. Moreover, each fixing frame 4 and the connecting member 41 are inclined at an angle, so the upper and lower groups of blind shielding cloths 43 will form an overlapping covering state, thereby improving the protection ability of the surface of the top shielding cloth 13. The edges of each layer of blind shielding cloth 43 can be staggered to avoid gaps, thereby further improving the dustproof performance.

[0045] When the upper supporting leg 2 drives the top shielding cloth 13 to deform, the first deformable shielding cloth 44 between the two fixing frames 4 can be stretched left and right, and the second deformable shielding cloth 45 arranged in the middle of the first deformable shielding cloth 44 can be stretched up and down, thereby improving the multi-directional deformation ability, and the spring 47 between the two sides of the first deformable shielding cloth 44 and the side fixing frame 48 can further improve the pulling resistance of the first deformable shielding cloth 44 and improve the deformation fit, further ensuring that the top shielding cloth 13 can still complete the repeated covering of the louver shielding cloth 43 and the first deformable shielding cloth 44 after deformation, thereby improving the dustproof and windproof capabilities.

[0046] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A vehicle maintenance shielding device with dustproof function, comprising a shielding cover body (1), characterized in that: The shielding cover body (1) comprises a middle shielding cloth (18) and a top shielding cloth (13), second support legs (23) are fixedly installed in the four corners of the middle shielding cloth (18), an upper support leg (2) is rotatably installed above each of the second support legs (23), a bottom support leg (25) is arranged below each of the second support legs (23), a variable leg (29) is arranged below each of the bottom support legs (25), a second support surface (34) is arranged inside the shielding cover body (1) near the top of the shielding cover body (1), a steel frame (37) is fixedly installed on the side wall of each of the second support legs (23), and the tops of the four steel frames (37) are fixedly connected to the bottom of the second support surface (34); At least two fixing frames (4) are fixedly mounted on the four sides of the top shielding cloth (13), and each two fixing frames (4) form a group. A louver shielding cloth (43) is arranged between each group of two fixing frames (4), and a first deformable shielding cloth (44) is arranged between the two groups of fixing frames (4).

2. A vehicle maintenance shielding device with dustproof function as claimed in claim 1, characterized in that: A first connecting frame (21) is fixedly mounted on the side wall of each upper supporting leg (2) close to the top, and a first connecting shaft (24) is rotatably mounted below each upper supporting leg (2) and between the second supporting leg (23).

3. A vehicle maintenance shielding device with dustproof function as claimed in claim 1, characterized in that: A second connecting shaft (3) is rotatably mounted below each bottom supporting leg (25) and between the variable leg (29), a cylinder (27) is fixedly mounted below each bottom supporting leg (25), and a support frame (28) is fixedly mounted at the end of the output shaft of each cylinder (27).

4. A vehicle maintenance shielding device with dustproof function as claimed in claim 3, characterized in that: A limiting rod (31) is fixedly mounted on the top of each variable leg (29), and the limiting rod (31) is located on the rear side of the second connecting shaft (3). A second supporting surface (34) and a first supporting surface (33) are provided below each variable leg (29).

5. A vehicle maintenance shielding device with dustproof function as claimed in claim 1, characterized in that: At least two motors (35) are fixedly mounted below the second supporting surface (34), and a winding belt (36) is installed between the shaft end of each motor (35) and the first connecting frame (21), and the winding belt (36) is used to control the rotation angle of the upper supporting leg (2).

6. A vehicle maintenance shielding device with dustproof function as claimed in claim 1, characterized in that: The shielding cover body (1) further comprises a bottom apron cover (11), a connecting apron cover (12) and an electric shielding door (16); the bottom apron cover (11) is fixed outside the middle shielding cloth (18) and is located below the middle shielding cloth (18); the connecting apron cover (12) is fixed between the top shielding cloth (13) and the middle shielding cloth (18).

7. A vehicle maintenance shielding device with dustproof function as claimed in claim 1, characterized in that: The inner walls at the four corners of the top shielding cloth (13) are each provided with a first slot (14) and a second slot (15), and the first slot (14) is located at the connection between the upper supporting leg (2) and the second supporting leg (23), and the second slot (15) is located at the first connecting frame (21).

8. A vehicle maintenance shielding device with dustproof function as claimed in claim 1, characterized in that: A connecting piece (41) is fixedly mounted on the back of each fixing frame (4), and each connecting piece (41) is fixedly connected to the surface of the middle-layer shielding cloth (18). A side fixing frame (48) is fixedly mounted on the surface of each fixing frame (4), and the first deformable shielding cloth (44) is located between the two side fixing frames (48).

9. A vehicle maintenance shielding device with dustproof function as claimed in claim 8, characterized in that: Connecting rods (46) are fixedly mounted on both side walls of each first deformable shielding cloth (44), and a spring (47) is fixedly mounted between each connecting rod (46) and the inner wall of the side fixing frame (48), and a second deformable shielding cloth (45) is fixedly mounted in the middle of each first deformable shielding cloth (44).

10. A vehicle maintenance shielding device with dustproof function as claimed in claim 1, characterized in that: At least two grooves (49) are provided on both side surfaces of each of the louver shielding cloths (43), at least two outer openings (5) are provided on the front side surface of each of the louver shielding cloths (43), at least two inner openings (51) are provided on the rear side wall surface of each of the louver shielding cloths (43), and the outer openings (5) and the inner openings (51) are interconnected.

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