Scissor fork lifting system of underbody assembly

Abstract

The invention discloses a scissor fork lifting system of a vehicle body bottom plate assembly, and relates to the field of scissor fork lifting systems. The device comprises a bottom platform, a movable platform, a lifting assembly, a positioning assembly, a protection assembly, a first cleaning assembly, a reinforcing assembly and a second cleaning assembly. The lifting assembly is arranged between the bottom platform and the movable platform, the positioning assembly is arranged between the lifting assembly and the bottom platform, the protection assemblies are arranged on the two sides of the lifting assembly, the first cleaning assemblies are arranged on the two sides of the movable platform, the reinforcing assembly is arranged on the bottom platform, and the second cleaning assembly is arranged on one side of the protection assemblies. Gas is input into the protection gas bag from the gas conveying pipe, the gas in the protection gas bag enters the output pipe through the output head, then the gas in the output pipe enters the air cylinder, and the pressure formed by the gas in the air cylinder enables the piston to move, so that the reinforcing block connected with the piston is driven to move downwards, the system is more stable, and potential safety hazards are reduced.

Description

Technical Field

[0001] The invention relates to the field of scissor fork lifting systems, and in particular to a scissor fork lifting system for a vehicle body floor assembly. Background Art

[0002] In daily production and life, it is often necessary to use a lifting system to lift objects in order to perform various tasks. The basic structure of the existing scissor-fork type belt lift is similar to that of the scissor-fork type hydraulic lift and is driven by a motor.

[0003] During the body processing process, the body floor assembly needs to be lifted up, so the lifting platform of the scissor fork lifting system needs to be against the body floor, the motor is started to unfold the scissor forks, and then the lifting platform rises to lift up the body floor assembly.

[0004] However, the existing scissor fork lifting system has the following problems during operation: During the working process, the scissor fork is composed of multiple parts. The side of the scissor fork system is easily collided, and this part is relatively weak and easily damaged after the collision. Therefore, the service life of the scissor fork system is easily reduced after the collision. During the supporting process, since the top of the scissor fork lifting system has to bear a large weight, the bottom of the existing scissor fork lifting system is not fixed stably enough, which may easily lead to hidden dangers; After work, the movable platform is in contact with the bottom of the vehicle, which is easily contaminated with a lot of dust and cannot be cleaned in time. Summary of the invention

[0005] The purpose of the present invention is to provide a scissor fork lifting system for a vehicle body floor assembly, and to provide a scissor fork lifting system that can increase the service life of the device, reduce safety hazards, and can clean the platform in time.

[0006] The present invention is a scissor fork lifting system of a vehicle body floor assembly, comprising a bottom platform, a movable platform, a lifting assembly, a positioning assembly, a protection assembly, a first cleaning assembly, a reinforcement assembly and a second cleaning assembly; The lifting component is arranged between the bottom platform and the movable platform, the positioning component is arranged between the lifting component and the bottom platform, the protection component is arranged on both sides of the lifting component, the first cleaning component is arranged on both sides of the movable platform, the reinforcement component is arranged on the bottom platform, and the second cleaning component is arranged on one side of the protection component.

[0007] The lifting assembly includes a driving motor, a driving shaft, a gear set, a pulley set and a scissors fork structure. The driving motor is arranged on the top surface of the bottom platform, and a plurality of driving shafts are movably installed on the bottom platform. The gear set is connected to the driving shaft, and the input end of the pulley set is connected to the output end of the driving motor, and the output end of the pulley set is connected to the driving shaft. One end of the scissors fork structure is connected to the gear set, and one end of the scissors fork structure is connected to the bottom of the movable platform, and the other end of the scissors fork structure is connected to the output end of the gear set.

[0008] The protection component includes a driving disk, a driving handle, a driving rod, a lifting frame, an air delivery structure, an air delivery pipe and a protection airbag. One side of the driving disk is connected to one end of the driving shaft, the driving handle is connected to the other side of the driving disk, one end of the driving rod is connected to one side of the driving handle, the lifting frame cooperates with the driving rod, the input end of the air delivery structure is connected to the lifting frame through a connecting rod, a plurality of the protection airbags are arranged in a straight line on one side of the scissors fork structure, one end of the air delivery pipe is connected to the output end of the air delivery structure, and the other end of the air delivery pipe is connected to the protection airbag.

[0009] The first cleaning assembly includes a rotating connecting ring, a connecting pipe, a cleaner, a nozzle and an unfolding structure, wherein the rotating connecting ring is arranged on one side of the scissor fork structure, the interior of the rotating connecting ring is hollow and communicated with the protective airbag, the cleaner is movably arranged on a movable platform, a plurality of nozzles are arranged on one side of the cleaner, one end of the unfolding structure is connected to the cleaner, and the other end of the unfolding structure is connected to one side of the scissor fork structure; Among them, the rotating connecting ring is divided into two layers, the inner layer rotates with the scissors fork structure, and the outer layer is connected to the protective airbag and the connecting tube. There is a channel between the inner and outer layers to transfer gas, which is opened and closed during the rotation of the inner layer.

[0010] The reinforcement assembly includes an output pipe, a cylinder, a piston, a telescope, a return spring and a reinforcement block. An output head is arranged at the bottom of the protection airbag, and a plurality of cylinders are respectively arranged at the four corners of the bottom platform. One end of the output pipe is connected to the output head, and the other end of the output pipe is connected to the cylinder. The piston is movably arranged inside the cylinder, one end of the telescope is connected to the top of the piston, and the other end of the telescope is connected to the inner wall of the cylinder. The return spring is arranged around the telescope, and the reinforcement block is connected to the bottom of the piston.

[0011] The second cleaning component includes a mounting frame and a cleaning brush. The mounting frame is arranged on the top of the lifting frame, and the cleaning brush is installed on one side of the mounting frame.

[0012] The positioning assembly includes an unfolding frame, a track, a slider and a positioning piece. The movable platform is provided with a track, the slider is movably arranged in the track, one end of the unfolding frame is connected to a rotating connecting ring, the other end of the unfolding frame is connected to the slider, and the positioning piece is arranged on the slider.

[0013] The protective airbags are provided in a plurality and are connected via connecting air pipes.

[0014] The gas delivery structure is arranged on one side of the bottom platform and is located inside the scissor fork structure.

[0015] The present invention has the following beneficial effects: The present invention drives the driving motor to rotate the driving shaft through the pulley group during the lifting process. The rotation of the driving shaft drives the driving disk connected thereto to rotate. The rotation of the driving disk drives the driving handle to rotate. The rotation of the driving handle causes the driving rod to rotate. The driving rod cooperates with the lifting frame, and the driving rod moves in the lifting frame, thereby driving the lifting frame to move up and down in a cycle, so that the gas transmission structure works. The gas is input into the protective airbag from the gas transmission pipe. The protective airbag protects the side of the scissors fork structure to protect the scissors fork structure from side collisions, thereby increasing the service life of the system. The gas can be interconnected with the lifting of the scissors fork to provide protection when the scissors fork is lifted, thereby improving synchronization and automation.

[0016] The present invention drives the motor to rotate in the opposite direction after working, thereby contracting the scissor fork structure. During the contraction of the scissor fork structure, the unfolding structure gradually contracts, thereby moving the cleaner upward, aiming the nozzle at the movable platform, and the rotating connecting ring is divided into inner and outer layers and coordinated with a channel. When the scissor fork structure contracts to the initial position, the rotating connecting ring is connected, and the gas enters the cleaner from the connecting pipe and is then ejected through the nozzle. When cleaning, the cleaning table surface can be connected with the contraction of the scissor fork, so that the table surface can be cleaned more timely.

[0017] The present invention inputs gas from the gas pipe into the protective airbag during the lifting process, and the gas in the protective airbag enters the output pipe through the output head, and then the gas in the output pipe enters the cylinder. The pressure formed by the gas in the cylinder causes the piston to move, thereby driving the reinforcement block connected to the piston to move downward. The surface of the reinforcement block is provided with many anti-sliding blocks, which can increase the friction, make the system more stable, and reduce safety hazards. Moreover, through the drive of the protective airbag, the reinforcement process can be interconnected with the lifting of the scissors fork. The reinforcement is carried out when the scissors fork is lifted, and the reinforcement is stopped when the scissors fork is retracted, which is more flexible.

[0018] The present invention enables the unfolding frame to unfold along with the scissor fork structure during the lifting process, so that the slider slides in the track. Then, when the scissor fork structure is unfolded to an appropriate position, the positioning piece can cooperate with the bottom plate and be locked for positioning. The positioning process can be linked with the lifting process of the system. The movement of the positioning piece and the movement of the scissor fork structure improve the accuracy of positioning.

[0019] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of a scissor fork lifting system of a vehicle body floor assembly of the present invention; Figure 2 It is a front view structural schematic diagram of a scissor fork lifting system of a vehicle body floor assembly of the present invention; Figure 3 It is a rear structural schematic diagram of a scissor fork lifting system of a vehicle body floor assembly of the present invention; Figure 4 For the present invention Figure 2 Schematic diagram of the structure at AA in the middle; Figure 5 For the present invention Figure 2 Schematic diagram of the structure at the middle BB; Figure 6 For the present invention Figure 1 A partial enlarged view of point C in the middle; Figure 7 For the present invention Figure 2 A partial enlarged view of point D in the middle; Figure 8 For the present invention Figure 4 A partial enlarged view of point E in the middle.

[0022] In the accompanying drawings, the components represented by the reference numerals are as follows: 110, bottom platform; 120, movable platform; 130, lifting assembly; 1301, driving motor; 1302, driving shaft; 1303, gear set; 1304, pulley set; 1305, scissor fork structure; 140, positioning assembly; 1401, unfolding frame; 1402, track; 1403, slider; 1404, positioning member; 150, protection assembly; 1501, driving disk; 1502, driving handle; 1503, driving rod; 1504, lifting frame; 1505, gas transmission structure; 1506, gas transmission pipe; 15 07, protective airbag; 1508, connecting rod; 1509, connecting air pipe; 160, first cleaning component; 1601, rotating connecting ring; 1602, connecting pipe; 1603, cleaner; 1604, nozzle; 1605, unfolding structure; 170, reinforcement component; 1701, output pipe; 1702, cylinder; 1703, piston; 1704, telescope; 1705, return spring; 1706, reinforcement block; 1707, output head; 180, second cleaning component; 1801, mounting bracket; 1802, cleaning brush. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] In the description of the present invention, it should be understood that the terms "upper", "middle", "outer", "inner" and the like indicating directions or positional relationships are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0025] like Figure 1-8 As shown, this embodiment lists a scissor fork lifting system of a vehicle body floor assembly, including a bottom platform 110, a movable platform 120, a lifting assembly 130, a positioning assembly 140, a protection assembly 150, a first cleaning assembly 160, a reinforcement assembly 170 and a second cleaning assembly 180; The lifting assembly 130 is arranged between the bottom platform 110 and the movable platform 120, the positioning assembly 140 is arranged between the lifting assembly 130 and the bottom platform 110, the protection assembly 150 is arranged on both sides of the lifting assembly 130, the first cleaning assembly 160 is arranged on both sides of the movable platform 120, the reinforcement assembly 170 is arranged on the bottom platform 110, and the second cleaning assembly 180 is arranged on one side of the protection assembly 150.

[0026] The lifting assembly 130 includes a driving motor 1301, a driving shaft 1302, a gear set 1303, a pulley set 1304 and a scissors fork structure 1305. The driving motor 1301 is arranged on the top surface of the bottom platform 110, and a plurality of driving shafts 1302 are movably installed on the bottom platform 110. The gear set 1303 is connected to the driving shaft 1302, and the input end of the pulley set 1304 is connected to the output end of the driving motor 1301, and the output end of the pulley set 1304 is connected to the driving shaft 1302. One end of the scissors fork structure 1305 is connected to the gear set 1303, and one end of the scissors fork structure 1305 is connected to the bottom of the movable platform 120, and the other end of the scissors fork structure 1305 is connected to the output end of the gear set 1303.

[0027] The protection assembly 150 includes a driving disk 1501, a driving handle 1502, a driving rod 1503, a lifting frame 1504, an air delivery structure 1505, an air delivery pipe 1506 and a protection airbag 1507. One side of the driving disk 1501 is connected to one end of the driving shaft 1302, the driving handle 1502 is connected to the other side of the driving disk 1501, one end of the driving rod 1503 is connected to one side of the driving handle 1502, the lifting frame 1504 cooperates with the driving rod 1503, the input end of the air delivery structure 1505 is connected to the lifting frame 1504 through a connecting rod 1508, a plurality of protection airbags 1507 are arranged in a straight line on one side of the scissor fork structure 1305, one end of the air delivery pipe 1506 is connected to the output end of the air delivery structure 1505, and the other end of the air delivery pipe 1506 is connected to the protection airbag 1507; During operation, in the process of lifting, the driving motor 1301 drives the driving shaft 1302 to rotate through the pulley group 1304. The rotation of the driving shaft 1302 will drive the driving disk 1501 connected thereto to rotate. The rotation of the driving disk 1501 drives the driving handle 1502 to rotate. The rotation of the driving handle 1502 causes the driving rod 1503 to rotate. The driving rod 1503 cooperates with the lifting frame 1504, and the driving rod 1503 moves in the lifting frame 1504, thereby driving the lifting frame 1504 to move up and down in a cycle, so that the gas transmission structure 1505 works, and the gas is input into the protective airbag 1507 from the gas transmission pipe 1506. The protective airbag 1507 protects the side of the scissors fork structure 1305 to protect the scissors fork structure 1305 from side collisions, thereby increasing the service life of the system, and can be interconnected with the scissors fork lifting and lowering, and the scissors fork is protected when it is lifted, thereby improving synchronization and automation.

[0028] The first cleaning assembly 160 includes a rotating connecting ring 1601, a connecting pipe 1602, a cleaner 1603, a nozzle 1604 and an unfolding structure 1605. The rotating connecting ring 1601 is arranged on one side of the scissor fork structure 1305. The rotating connecting ring 1601 is hollow inside and communicates with the protective airbag 1507. The cleaner 1603 is movably arranged on the movable platform 120. A plurality of nozzles 1604 are arranged on one side of the cleaner 1603. One end of the unfolding structure 1605 is connected to the cleaner 1603, and the other end of the unfolding structure 1605 is connected to one side of the scissor fork structure 1305. During operation, after the work is completed, the driving motor 1301 rotates in the opposite direction, thereby contracting the scissor fork structure 1305. During the contraction of the scissor fork structure 1305, the unfolding structure 1605 gradually contracts, thereby moving the cleaner 1603 upward, and the nozzle 1604 is aligned with the movable platform 120. The rotating connecting ring 1601 is divided into an inner and outer layer and is coordinated with a channel. When the scissor fork structure 1305 is contracted to the initial position, the rotating connecting ring 1601 is connected, and the gas enters the cleaner 1603 from the connecting pipe 1602, and then is ejected through the nozzle 1604. When cleaning, the cleaning table surface can be connected with the contraction of the scissor fork, so that the table surface can be cleaned more timely.

[0029] The reinforcement assembly 170 includes an output tube 1701, a cylinder 1702, a piston 1703, a retractor 1704, a return spring 1705 and a reinforcement block 1706. An output head 1707 is arranged at the bottom of the protection airbag 1507. A plurality of cylinders 1702 are arranged at the four corners of the bottom platform 110 respectively. One end of the output tube 1701 is connected to the output head 1707, and the other end of the output tube 1701 is connected to the cylinder 1702. The piston 1703 is movably arranged inside the cylinder 1702. One end of the retractor 1704 is connected to the top of the piston 1703, and the other end of the retractor 1704 is connected to the inner wall of the cylinder 1702. The return spring 1705 is arranged around the retractor 1704, and the reinforcement block 1706 is connected to the bottom of the piston 1703. During operation, during the lifting process, gas is input from the gas pipe 1506 into the protective airbag 1507, and the gas in the protective airbag 1507 enters the output pipe 1701 through the output head 1707, and then the gas in the output pipe 1701 enters the cylinder 1702. The pressure formed by the gas in the cylinder 1702 will move the piston 1703, thereby driving the reinforcement block 1706 connected to the piston 1703 to move downward. The surface of the reinforcement block 1706 is provided with many anti-sliding blocks, which can increase the friction, make the system more stable, and reduce safety hazards. Moreover, driven by the protective airbag 1507, the reinforcement process can be interconnected with the lifting of the scissors fork. Reinforcement is carried out when the scissors fork is lifted, and reinforcement stops when the scissors fork is retracted, which is more flexible.

[0030] The second cleaning assembly 180 includes a mounting frame 1801 and a cleaning brush 1802 . The mounting frame 1801 is disposed on the top of the lifting frame 1504 , and the cleaning brush 1802 is installed on one side of the mounting frame 1801 .

[0031] The positioning assembly 140 includes an expansion frame 1401, a track 1402, a slider 1403 and a positioning member 1404. The movable platform 120 is provided with a track 1402, and the slider 1403 is movably arranged in the track 1402. One end of the expansion frame 1401 is connected to the rotating connecting ring 1601, and the other end of the expansion frame 1401 is connected to the slider 1403. The positioning member 1404 is arranged on the slider 1403. During operation, in the process of lifting and lowering, the unfolding frame 1401 unfolds along with the scissor fork structure 1305, so that the slider 1403 slides in the track 1402, and then when the scissor fork structure 1305 is unfolded to the appropriate position, the positioning member 1404 can cooperate with the base plate and be locked for positioning, so that the positioning process can be linked with the lifting and lowering process of the system. The movement of the positioning member 1404 and the movement of the scissor fork structure 1305 improve the accuracy of positioning.

[0032] There are a plurality of protection airbags 1507 , which are connected via a connecting air pipe 1509 .

[0033] The gas delivery structure 1505 is disposed on one side of the bottom platform 110 and is located inside the scissor-fork structure 1305 .

[0034] The working steps of the scissor fork lifting system of the vehicle body floor assembly of the present invention are as follows: Lifting: When the vehicle body bottom plate needs to be supported, the driving motor 1301 is started, and the driving motor 1301 drives the driving shaft 1302 to rotate through the pulley set 1304, and the driving shaft 1302 drives the rotating shaft in the scissor fork structure 1305 to rotate through the gear set 1303, so that the scissor fork structure 1305 is unfolded, so that the movable platform 120 is lifted; position: During the lifting process, the unfolding frame 1401 unfolds along with the scissor fork structure 1305, so that the slider 1403 slides in the track 1402. Then, when the scissor fork structure 1305 unfolds to a proper position, the positioning member 1404 can cooperate with the bottom plate and be locked for positioning; Protect: During the lifting process, the driving motor 1301 drives the driving shaft 1302 to rotate through the pulley group 1304. The rotation of the driving shaft 1302 drives the driving disk 1501 connected thereto to rotate. The rotation of the driving disk 1501 drives the driving handle 1502 to rotate. The rotation of the driving handle 1502 causes the driving rod 1503 to rotate. The driving rod 1503 cooperates with the lifting frame 1504. The driving rod 1503 moves in the lifting frame 1504, thereby driving the lifting frame 1504 to move up and down in a cycle, so that the gas transmission structure 1505 works, and the gas is input into the protective airbag 1507 from the gas transmission pipe 1506. The protective airbag 1507 protects the side of the scissor fork structure 1305. Reinforcement: During the lifting process, gas is input from the gas pipe 1506 into the protective airbag 1507, and the gas in the protective airbag 1507 enters the output pipe 1701 through the output head 1707, and then the gas in the output pipe 1701 enters the cylinder 1702. The pressure formed by the gas in the cylinder 1702 causes the piston 1703 to move, thereby driving the reinforcement block 1706 connected to the piston 1703 to move downward. The surface of the reinforcement block 1706 is provided with many anti-sliding blocks, which can increase the friction and make the system more stable. After the work is completed, the retractor 1704 cooperates with the return spring 1705 to return the reinforcement block 1706 to its original position after the pressure disappears; Cleanup: After the operation, the driving motor 1301 rotates in the reverse direction, thereby contracting the scissor fork structure 1305. During the contraction of the scissor fork structure 1305, the unfolding structure 1605 gradually contracts, thereby causing the cleaner 1603 to move upward, and the nozzle 1604 is aligned with the movable platform 120. The rotating connecting ring 1601 is divided into an inner and outer layer and is matched with a channel. When the scissor fork structure 1305 contracts to the initial position, the rotating connecting ring 1601 is connected, and the gas enters the cleaner 1603 from the connecting pipe 1602, and then is ejected through the nozzle 1604. After work, the tools need to be cleaned. As the lifting frame 1504 moves up and down with the scissor fork structure 1305, the mounting frame 1801 connected thereto will be lifted and moved, so that the cleaning brush 1802 will continuously move up and down to clean the tools.

[0035] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A scissor fork lifting system for a vehicle body floor assembly, characterized in that: It comprises a bottom platform (110), a movable platform (120), a lifting assembly (130), a positioning assembly (140), a protection assembly (150), a first cleaning assembly (160), a reinforcement assembly (170), and a second cleaning assembly (180); The lifting component (130) is arranged between the bottom platform (110) and the movable platform (120), the positioning component (140) is arranged between the lifting component (130) and the bottom platform (110), the protection component (150) is arranged on both sides of the lifting component (130), the first cleaning component (160) is arranged on both sides of the movable platform (120), the reinforcement component (170) is arranged on the bottom platform (110), and the second cleaning component (180) is arranged on one side of the protection component (150).

2. The scissor fork lifting system of the vehicle body floor assembly according to claim 1, characterized in that: The lifting assembly (130) comprises a driving motor (1301), a driving shaft (1302), a gear set (1303), a pulley set (1304) and a scissor-fork structure (1305); the driving motor (1301) is arranged on the top surface of the bottom platform (110); a plurality of driving shafts (1302) are movably mounted on the bottom platform (110); the gear set (1303) is connected to the driving shaft (1302); the input end of the pulley set (1304) is connected to the output end of the driving motor (1301); the output end of the pulley set (1304) is connected to the driving shaft (1302); one end of the scissor-fork structure (1305) is connected to the gear set (1303); one end of the scissor-fork structure (1305) is connected to the bottom of the movable platform (120); and the other end of the scissor-fork structure (1305) is connected to the output end of the gear set (1303).

3. The vehicle body floor assembly scissor fork lifting system according to claim 2, characterized in that: The protection assembly (150) comprises a driving disk (1501), a driving handle (1502), a driving rod (1503), a lifting frame (1504), an air supply structure (1505), an air supply pipe (1506), and a protection airbag (1507), wherein one side of the driving disk (1501) is connected to one end of the driving shaft (1302), the driving handle (1502) is connected to the other side of the driving disk (1501), and one end of the driving rod (1503) is connected to the driving handle (1302). 502), the lifting frame (1504) cooperates with the driving rod (1503), the input end of the gas delivery structure (1505) is connected to the lifting frame (1504) through a connecting rod (1508), a plurality of protective air bags (1507) are arranged in a straight line on one side of the scissor fork structure (1305), one end of the gas delivery pipe (1506) is connected to the output end of the gas delivery structure (1505), and the other end of the gas delivery pipe (1506) is connected to the protective air bag (1507).

4. The scissor fork lifting system of the vehicle body floor assembly according to claim 3, characterized in that: The first cleaning component (160) comprises a rotating connecting ring (1601), a connecting pipe (1602), a cleaner (1603), a nozzle (1604) and an unfolding structure (1605); the rotating connecting ring (1601) is arranged on one side of the scissor-fork structure (1305); the rotating connecting ring (1601) is hollow inside and is connected to the protective airbag (1507); the cleaner (1603) is movably arranged on the movable platform (120); a plurality of nozzles (1604) are arranged on one side of the cleaner (1603); one end of the unfolding structure (1605) is connected to the cleaner (1603); and the other end of the unfolding structure (1605) is connected to one side of the scissor-fork structure (1305).

5. The vehicle body floor assembly scissor fork lifting system according to claim 4, characterized in that: The reinforcement assembly (170) comprises an output tube (1701), a cylinder (1702), a piston (1703), a telescoping device (1704), a return spring (1705) and a reinforcement block (1706); an output head (1707) is arranged at the bottom of the protection airbag (1507); a plurality of the cylinders (1702) are respectively arranged at the four corners of the bottom platform (110); one end of the output tube (1701) is connected to the output head (1707); The other end of the output pipe (1701) is connected to the cylinder (1702), the piston (1703) is movably arranged inside the cylinder (1702), one end of the telescope (1704) is connected to the top of the piston (1703), and the other end of the telescope (1704) is connected to the inner wall of the cylinder (1702), the return spring (1705) is arranged around the telescope (1704), and the reinforcement block (1706) is connected to the bottom of the piston (1703).

6. The vehicle body floor assembly scissor fork lifting system according to claim 5, characterized in that: The second cleaning component (180) comprises a mounting frame (1801) and a cleaning brush (1802); the mounting frame (1801) is arranged on the top of the lifting frame (1504); and the cleaning brush (1802) is installed on one side of the mounting frame (1801).

7. The vehicle body floor assembly scissor fork lifting system according to claim 6, characterized in that: The positioning assembly (140) comprises an unfolding frame (1401), a track (1402), a slider (1403) and a positioning member (1404); the movable platform (120) is provided with a track (1402); the slider (1403) is movably arranged in the track (1402); one end of the unfolding frame (1401) is connected to a rotating connecting ring (1601); the other end of the unfolding frame (1401) is connected to the slider (1403); and the positioning member (1404) is arranged on the slider (1403).

8. The vehicle body floor assembly scissor fork lifting system according to claim 7, characterized in that: A plurality of the protective airbags (1507) are provided, and the plurality of protective airbags (1507) are connected via a connecting air pipe (1509).

9. The vehicle body floor assembly scissor fork lifting system according to claim 8, characterized in that: The gas transmission structure (1505) is arranged on one side of the bottom platform (110) and is located inside the scissor-fork structure (1305).

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