Assembly platform assembly and frame production line

Abstract

The present disclosure relates to an assembly platform assembly and a frame production line, the assembly platform assembly comprising: a standing part comprising a standing platform for carrying an operator, the standing platform being parallel to a production line platform; and a lifting part arranged below the standing platform and configured to drive the standing part to move in a height direction, so that the assembly platform assembly has: a first state in which the standing platform is located on the ground surface; and a second state in which the upper surface of the standing platform is flush with the upper surface of the production line platform. The lifting part controls the movement of the standing platform, so that the operator can be positioned at different heights. The operator can perform assembly operations on different assembly directions of the connecting points on the frame on the same standing platform without moving, which not only reduces the labor intensity of the operator and improves the production efficiency, but also reduces the number of workstations, shortens the length of the production line, saves the space occupied by the fixed stairs, and greatly improves the space utilization in the factory building.

Description

Technical Field

[0001] This disclosure relates to the field of vehicle parts manufacturing technology, and more specifically, to an assembly platform assembly and a chassis production line. Background Technology

[0002] In the assembly process of three-section vehicle frames, the bolt installation directions at the connection points of the front, middle, and rear sections of the frame are not entirely the same. Some connection points require bolts to be driven upwards, some require bolts to be driven horizontally on the side of the frame, and others require bolts to be driven downwards. Depending on the required bolt placement, workers also need to be positioned differently on the frame. In existing production lines, workers typically need to access a high operating platform via fixed stairs. This is not only time-consuming and physically demanding for workers, but the stairs also occupy a large area, encroaching on the space occupied by other equipment on the production line, thus increasing the required factory space and production costs. Utility Model Content

[0003] The purpose of this disclosure is to provide an assembly platform component and chassis production line to reduce the factory floor space, improve space utilization, and save on production line investment.

[0004] To achieve the above objectives, this disclosure provides an assembly platform component, the assembly platform component comprising: The station includes a standing platform for supporting operators, said standing platform being parallel to the production line platform; and A lifting unit, disposed below the standing platform, is used to drive the standing unit to move along the height direction, so that the assembly platform assembly has: In the first state, the standing platform is located on the ground surface; In the second state, the upper surface of the standing platform is flush with the upper surface of the production line platform.

[0005] Optionally, the lifting unit includes: A base for fixing on the ground, wherein the base has a first groove extending along a first horizontal direction, and the station part has a second groove extending along the first horizontal direction; A scissor lift mechanism is connected between the base and the station. The scissor lift mechanism includes a first scissor fork and a second scissor fork that are hinged to each other, and a drive member that drives at least one of the first scissor fork and the second scissor fork to move.

[0006] Optionally, the driving component includes a motor, a hydraulic pump, and a hydraulic cylinder, wherein the motor is connected to the hydraulic pump, and the hydraulic cylinder includes: The hydraulic pump is connected to the oil circuit. The cylinder block is connected to the oil passage; and The piston rod is reciprocally mounted within the cylinder. In this configuration, one of the cylinder body and the piston rod is hinged to the first scissor lift, and the other of the cylinder body and the piston rod is hinged to the second scissor lift.

[0007] Optionally, the station includes two opposing standing platforms, which are located on opposite sides of the production line platform in a second horizontal direction, wherein the second horizontal direction is perpendicular to the first horizontal direction.

[0008] Optionally, the standing position also includes a plurality of spaced reinforcing rods, wherein the two ends of the reinforcing rods are respectively connected between the two standing platforms.

[0009] Optionally, the lifting unit is connected to the reinforcing rod or the two standing platforms, or There are two lifting parts, which are respectively connected to the two ends of the reinforcing rod.

[0010] Optionally, the station also includes a guardrail installed on the standing platform. The guardrail has a C-shaped structure, and the opening of the C-shaped structure is configured to be opposite to the production line platform.

[0011] Optionally, the maximum number of people the standing platform can carry is r, and the assembly platform assembly further includes: Detection elements are used to obtain the number 'a' of people borne on the standing platform in real time; and The workstation switching element includes 2r workstation switching buttons. The workstation switching element is connected to the detection element and the lifting unit respectively. The lifting unit is configured to start when the number of personnel a provided by the detection element is obtained, and when a≤r and 2a workstation switching buttons are started simultaneously.

[0012] Optionally, a storage groove is provided on the ground. In the first state, the standing platform is located in the storage groove, so that the upper surface of the standing platform is flush with the ground.

[0013] According to another aspect of this disclosure, a vehicle frame production line is provided, including a production line platform and the above-described assembly platform components, wherein the production line platform is used to place vehicle frames, and the assembly platform components are spaced apart along the extension direction of the production line platform.

[0014] Through the above technical solution, the lifting unit can control the movement of the standing platform to allow operators to be positioned at different heights. Assembly operations of connection points on the frame in different assembly directions can be carried out on the same standing platform without the need for personnel to move. This not only reduces the labor intensity of operators and improves production efficiency, but also reduces the number of workstations, shortens the production line length, and saves the space occupied by fixed stairs, greatly improving the space utilization rate in the factory.

[0015] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of a chassis production line according to one embodiment of the present disclosure.

[0017] Figure 2 This is a top view of a chassis production line according to one embodiment of the present disclosure.

[0018] Explanation of reference numerals in the attached figures 10-Chassis; 11-Ground; 12-Production line platform; 2-Storage slot; 3-Lifting unit; 31-First scissor lift; 32-Second scissor lift; 33-Drive unit; 3311-Motor; 3312-Hydraulic pump; 332-Hydraulic cylinder; 3321-Cylinder body; 3322-Piston rod; 4-Station unit; 41-Standing platform; 42-Reinforcing bar; 43-Guardrail; 5-Detection element; 6-Workstation switching element; 7-Raster sensor; 8-Vision inspection element. Detailed Implementation

[0019] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0020] In this disclosure, unless otherwise stated, directional terms such as "upper" and "lower" are defined in relation to the arrangement direction of the assembly platform components during actual use, and directional terms such as "inner" and "outer" are defined in relation to the outline of the corresponding parts. The terms "first," "second," etc., are used to distinguish different parts and do not imply sequentiality or importance. Furthermore, in the following description, when referring to the accompanying drawings, unless otherwise explained, the same reference numerals in different drawings denote the same or similar elements.

[0021] According to one embodiment of this disclosure, such as Figure 1 and Figure 2 As shown, an assembly platform assembly is provided, comprising a lifting unit 3 and a standing unit 4. The standing unit 4 may include a standing platform 41 for supporting operators, and the standing platform 41 is parallel to the production line platform 12. The lifting unit 3 may be disposed below the standing platform 41 for driving the standing unit 4 to move in the height direction, so that the assembly platform assembly has a first state and a second state. In the first state, the standing platform 41 may be located on the ground surface. In the second state, the upper surface of the standing platform 41 may be flush with the upper surface of the production line platform 12.

[0022] Through the above technical solution, the lifting unit 3 can control the movement of the standing platform 41 to allow the operator to be in different height positions. The assembly operation of the connection points of different assembly directions on the frame 10 can be realized on the same standing platform 41 without the need for personnel to move. This not only reduces the labor intensity of the operator and improves production efficiency, but also reduces the number of workstations, shortens the production line length, and saves the space occupied by fixed stairs, greatly improving the space utilization rate in the factory.

[0023] Here, when bolts need to be driven from bottom to top on the frame 10, the lifting unit 3 drives the station unit 4 to move until the upper surface of the standing platform 41 is flush with the ground 11, placing the assembly platform assembly in the first state. At this time, the operator can drive bolts onto the frame 10 from bottom to top. When bolts need to be driven horizontally on the side of the frame 10, taking the lifting unit 3 including the scissor lifting mechanism mentioned below as an example, the scissor lifting mechanism can drive the station unit 4 to move until the standing platform 41 is in a suitable position between the ground 11 and the production line platform 12. Then, the scissor lifting mechanism can be controlled to stop lifting, so that the standing platform 41 stops in the corresponding position. At this time, the operator can drive bolts onto the horizontal side of the frame 10. When bolts need to be driven from top to bottom on the frame 10, the lifting unit 3 drives the station unit 4 to move until the upper surface of the standing platform 41 is flush with the production line platform 12, placing the assembly platform assembly in the second state. At this time, the operator can drive bolts onto the frame 10 from top to bottom.

[0024] It should be noted that the standing platform 41 can be a single piece, and in the second state, it can be located on one side of the production line platform 12 in the second horizontal direction. The lifting unit 3 can also drive the standing platform 41 to move in the height direction while also moving in the second horizontal direction. In this way, the standing platform 41 can also be switched between the two sides of the production line platform 12 via the lifting unit 3. Alternatively, the standing platform 41 can be two pieces, which can be located on both sides of the production line platform 12 in the second horizontal direction in the second state. The specific solutions will be described in detail below.

[0025] Furthermore, the lifting unit 3 includes a base and a scissor lift mechanism. The base can be fixedly installed on the ground 11. The base has a first groove extending along a first horizontal direction, and the station 4 has a second groove extending along the first horizontal direction. The scissor lift mechanism can connect the base and the station 4. The scissor lift mechanism includes a first scissor fork 31 and a second scissor fork 32 hinged together, and a drive member 33 that drives at least one of the first scissor fork 31 and the second scissor fork 32. The scissor lift mechanism connects the base and the station 4 through the hinged first scissor fork 31 and the second scissor fork 32. The scissor structure itself has good load-bearing capacity and stability, providing a stable lifting support for the station 4 and operators, preventing swaying during lifting and ensuring operational safety.

[0026] It should be noted that the ground 11 may have a storage groove 2. In the first state, the standing platform 41 can be located in the storage groove 2, so that the upper surface of the standing platform 41 is flush with the ground 11. In this way, the storage groove 2 is recessed in the ground 11, and the base can be set in the storage groove 2. In the first state, the lifting part 3 can be stored in the storage groove 2.

[0027] In addition, in the height direction, the scissor lift mechanism can drive the standing platform 41 to be positioned between the production line platform 12 and the ground 11. Specifically, the drive component 33 drives at least one of the first scissor lift component 31 and the second scissor lift component 32 to move, thereby causing the scissor lift mechanism to extend and retract. Based on the first and second states, the standing platform 41 can also be adjusted to any height between the production line platform 12 and the ground 11, meeting the height adjustment requirements of different assembly processes for the standing platform 41 and improving the flexibility and accuracy of height adjustment.

[0028] Furthermore, such as Figure 1As shown, the drive unit 33 may include a motor 3311, a hydraulic pump 3312, and a hydraulic cylinder 332. The motor 3311 can be connected to the hydraulic pump 3312. The hydraulic cylinder 332 may include an oil circuit, a cylinder body 3321, and a piston rod 3322. The oil circuit can supply oil to the cylinder body 3321. The hydraulic pump 3312 is connected to the oil circuit, and the cylinder body 3321 is connected to the oil circuit. The piston rod 3322 can be reciprocally disposed in the cylinder body 3321. One of the cylinder body 3321 and the piston rod 3322 can be hinged to the first scissor lift member 31, and the other of the cylinder body 3321 and the piston rod 3322 can be hinged to the second scissor lift member 32. Alternatively, the cylinder body 3321 can be hinged to the second scissor lift member 32, and the piston rod 3322 can be hinged to the first scissor lift member 31. Alternatively, the cylinder body 3321 can be hinged to the first scissor lift member 31, and the piston rod 3322 can be hinged to the second scissor lift member 32; this disclosure does not limit this. The angle between the first scissor lift member 31 and the second scissor lift member 32 is adjusted by the reciprocating motion of the piston rod 3322 within the cylinder body 3321, thereby adjusting the height of the standing platform 41. Here, the motor 3311 can drive the hydraulic pump 3312 to manipulate the oil volume within the cylinder body 3321, thereby driving the piston rod 3322.

[0029] It should be noted that the two ends of the first scissor lift 31 can be hinged to the base and the second slide groove respectively, the middle area of ​​the second scissor lift 32 is hinged to the first scissor lift 31, and the two ends of the second scissor lift 32 are hinged to the first slide groove and the standing part 4 respectively.

[0030] When the piston rod 3322 moves out of the cylinder, it drives one end of the first scissor lift 31 to rotate around the base, and the other end to rotate around the second slide groove while moving along the second slide groove in the first horizontal direction. One end of the second scissor lift 32 rotates around the station part 4, and the other end rotates around the first slide groove while moving along the first slide groove in the first horizontal direction. This causes the first scissor lift 31 and the second scissor lift 32 to rotate around the hinge point between them, resulting in an increase in the included angle between the first scissor lift 31 and the second scissor lift 32 opposite to the hydraulic cylinder 332, which raises the station part 4.

[0031] When the piston rod 3322 extends into the cylinder, it drives one end of the first scissor lift 31 to rotate around the base, and the other end to rotate around the second slide groove while moving along the second slide groove in the first horizontal direction. One end of the second scissor lift 32 rotates around the station part 4, and the other end rotates around the first slide groove while moving along the first slide groove in the first horizontal direction. This causes the first scissor lift 31 and the second scissor lift 32 to rotate around the hinge point between them, resulting in a decrease in the included angle between the first scissor lift 31 and the second scissor lift 32 opposite to the hydraulic cylinder 332, which lowers the station part 4.

[0032] According to one embodiment of this disclosure, such as Figure 2As shown, the station 4 may include two opposing standing platforms 41, which are located on opposite sides of the production line platform 12 in a second horizontal direction, wherein the second horizontal direction is perpendicular to the first horizontal direction. This allows operators on both sides to perform assembly work simultaneously, enabling synchronous operation on both sides, significantly improving the assembly efficiency of workpieces such as chassis, and shortening the single-process operation time.

[0033] Furthermore, such as Figure 1 and Figure 2 As shown, the standing section 4 may further include multiple spaced reinforcing rods 42, with both ends of the reinforcing rods 42 connected between two standing platforms 41. Specifically, they may be connected to the lower surface of the standing platforms 41. The lifting section 3 is connected to the reinforcing rods 42 or the two standing platforms 41. The multiple spaced reinforcing rods 42 connected to the lower surfaces of the two standing platforms 41 effectively enhance the connection stability between the two standing platforms 41, preventing deformation or misalignment of the standing platforms 41 when bearing personnel or subjected to external forces, and improving the structural strength and load-bearing capacity of the entire standing section 4. Here, the reinforcing rods 42 may be provided at least at both ends of the standing platforms 41 in the first horizontal direction; this disclosure does not limit this.

[0034] Regarding the arrangement of the lifting unit 3, there can also be two lifting units 3, which can be connected to two corresponding standing platforms 41. In this way, each lifting unit 3 only needs to bear the load of its corresponding standing platform 41. Compared with a single lifting unit 3 bearing the load of the entire standing unit 4, this reduces the load pressure on a single lifting unit 3, reduces wear and tear on the lifting unit 3, improves the operational stability and service life of the lifting unit 3, and also provides stable support for the two standing platforms 41, improving the stability of the two standing platforms 41.

[0035] In addition, in the design where the two standing platforms 41 are independently set and not connected to the reinforcing rod 42, the two lifting units 3 can independently adjust the height of the corresponding standing platform 41 according to the work requirements on both sides. For example, when one side of the production line platform 12 needs to perform high-altitude work and the other side needs to perform low-altitude work, the lifting units 3 on both sides can be controlled separately to make the standing platforms 41 on both sides at different heights, thereby improving work flexibility.

[0036] In the scheme of connecting the reinforcing rod 42 between the two standing platforms 41, the lifting unit 3 can be single or two; this disclosure does not limit this. When the lifting unit 3 is single, it can be connected to either the two standing platforms 41 or the reinforcing rod 42. This can refer to connection to one of the three or simultaneous connection to all three; this disclosure does not limit this. When there are two lifting units 3, each lifting unit 3 can be connected to one end of the reinforcing rod 42, and a synchronizing rod connects the two lifting units 3. The synchronizing rod connects the two lifting units 3, ensuring that the two lifting units 3 maintain synchronized movement when driving the two standing platforms 41 connected to the reinforcing rod 42 to rise and fall. By achieving synchronized rising and falling through the synchronizing rod, the operator does not need to monitor and adjust the operating status of the two lifting units 3 separately; only one drive command is needed to achieve synchronized rising and falling of the two standing platforms 41, simplifying the operation process, reducing operational difficulty, and improving work efficiency. It also avoids shearing force at the reinforcing rod 42 due to the difference in operating speed between the two lifting units 3, which could lead to breakage of the reinforcing rod 42. Regarding the connection method of the synchronizing rod, taking the lifting part 3 as the scissor lifting mechanism mentioned above as an example, the synchronizing rod can be connected between the two first scissor pieces 31 or between the two second scissor pieces 32. In order to improve the synchronization effect, synchronizing rods can also be set between the two first scissor pieces 31 and between the two second scissor pieces 32 respectively. This disclosure does not limit this.

[0037] To improve production safety, such as Figure 1 As shown, the station 4 also includes a guardrail 43 installed on the standing platform 41. The guardrail 43 can be a C-shaped structure, and the opening of the C-shaped structure is used to be positioned opposite to the production line platform 12. In this way, the C-shaped guardrail 43 is installed on the standing platform 41, with an opening only on the side facing the production line platform 12. This provides sufficient space for operators to work facing the production line platform without affecting assembly operations. At the same time, the guardrail's enclosure structure guides operators to work within the safe area of ​​the standing platform, preventing operators from deviating from their work positions. This effectively prevents operators from accidentally falling from the edge of the standing platform 41 during operations, providing reliable safety protection for operators and reducing the safety risks of working at height.

[0038] Here, due to the complex layout of the production line equipment, there may be moving mechanisms that could cause injury to people at locations adjacent to the standing platform 41 (e.g., the horizontal projection area of ​​the standing platform 41, the area where the maximum outer edge of the standing platform 41 forms a shearing or squeezing relationship with the storage groove 2 and the production line platform 12). Therefore, a grating sensor 7 can also be installed on the outer side of the guardrail 43. Figure 2As shown, the grating sensor 7 is horizontally spaced from the standing platform 41. It can be installed on other structures spaced apart from the standing platform 41 within the factory building, or the standing platform 41 can be connected to an outwardly extending bracket, with the grating sensor 7 positioned on the bracket. This disclosure does not limit the specific arrangement. Thus, if personnel or foreign objects obstruct the grating sensor 7 during height switching of the standing platform 41, the assembly platform assembly can immediately stop operating.

[0039] To ensure the safety of the standing platform 41 during lifting, such as Figure 1 and Figure 2 As shown, the assembly platform assembly also includes a detection element 5 and a workstation switching element 6. Here, the maximum number of people the standing platform 41 can carry can be set to r. The detection element 5 can be a personnel quantity detector, used to obtain the real-time number a of personnel on the standing platform 41. The workstation switching element 6 can include 2r workstation switching buttons, so the number of workstation switching buttons is twice the maximum number of workers required by the standing platform 41. The workstation switching element 6 can be connected to both the detection element 5 and the lifting unit 3. The lifting unit 3 is configured to activate when a≤r and 2a of the workstation switching buttons are simultaneously activated after obtaining the number a of personnel from the detection element 5. Each operator on the standing platform 41 is responsible for two buttons, one in each hand. This ensures that the lifting unit 3 will only move the standing platform 41 to adjust its height when both of the operator's hands are on the workstation switching button. This significantly reduces the probability of misoperation, prevents accidental activation of the lifting unit 3 due to a single person accidentally pressing a button, or prevents the lifting unit from starting before all personnel are ready, thus ensuring the safety of the operators during the lifting process and improving operational safety.

[0040] Otherwise, the standing platform 41 will remain in its current position without displacement. Specifically, when a > r, the standing platform 41 is overloaded, and the lifting unit 3 will not start. This ensures that the actual number of people standing on the standing platform 41, a, does not exceed the maximum capacity, r, thus preventing safety accidents such as structural damage to the standing platform or failure of the lifting unit due to excessive load caused by overloading. This controls load safety from the source. When the number of workstation switching buttons activated simultaneously is less than 2a, it indicates that personnel have accidentally pressed the button or that not all personnel are fully prepared. The lifting unit 3 will also not start to ensure the safety of operators and improve operational safety.

[0041] Here, the workstation switching element 6 can be set on the standing platform 41, and the detection element 5 can be set above the standing platform. Specifically, it can be installed on other structures arranged at intervals from the standing platform 41 in the factory, or the standing platform 41 can be connected to a bracket extending upwards, and the detection element 5 can be arranged on the bracket. This disclosure does not limit this.

[0042] Based on the above solutions, this disclosure also provides a vehicle frame production line, which includes a production line platform 12 and the aforementioned assembly platform components. The production line platform 12 is used to place the vehicle frame 10, and the assembly platform components are spaced apart along the extension direction of the production line platform 12. Furthermore, this vehicle frame production line possesses all the beneficial effects of the aforementioned assembly platform components, which will not be elaborated further here.

[0043] It should be noted that a vision inspection element 8 can also be installed above the production line platform 12. Specifically, it can be installed on other structures spaced apart from the production line platform 12 in the factory, or the production line platform 12 can be connected to an upward-extending bracket, with the vision inspection element 8 arranged on the bracket. This disclosure does not limit this. The vision inspection element 8 can be a fixed type or a robotic arm. In this way, the vision inspection element 8 can continuously and automatically inspect the connection points on the frame 10, ensuring production accuracy and efficiency.

[0044] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0045] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0046] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. An assembly platform component, characterized in that, The assembly platform components include: The station includes a standing platform for supporting operators, said standing platform being parallel to the production line platform; and A lifting unit, disposed below the standing platform, is used to drive the standing unit to move along the height direction, so that the assembly platform assembly has: In the first state, the standing platform is located on the ground surface; In the second state, the upper surface of the standing platform is flush with the upper surface of the production line platform.

2. The assembly platform component according to claim 1, characterized in that, The lifting unit includes: A base for fixing on the ground, wherein the base has a first groove extending along a first horizontal direction, and the station part has a second groove extending along the first horizontal direction; A scissor lift mechanism is connected between the base and the station. The scissor lift mechanism includes a first scissor fork and a second scissor fork that are hinged to each other, and a drive member that drives at least one of the first scissor fork and the second scissor fork to move.

3. The assembly platform component according to claim 2, characterized in that, The driving component includes a motor, a hydraulic pump, and a hydraulic cylinder. The motor is connected to the hydraulic pump, and the hydraulic cylinder includes: The hydraulic pump is connected to the oil circuit. The cylinder block is connected to the oil passage; and The piston rod is reciprocally mounted within the cylinder. In this configuration, one of the cylinder body and the piston rod is hinged to the first scissor lift, and the other of the cylinder body and the piston rod is hinged to the second scissor lift.

4. The assembly platform component according to claim 1, characterized in that, The station includes two opposing standing platforms, which are located on opposite sides of the production line platform in a second horizontal direction, wherein the second horizontal direction is perpendicular to the first horizontal direction.

5. The assembly platform component according to claim 4, characterized in that, The standing area also includes multiple spaced reinforcing bars, wherein the two ends of the reinforcing bars are respectively connected between the two standing platforms.

6. The assembly platform component according to claim 5, characterized in that, The lifting unit is connected to the reinforcing rod or the two standing platforms, or There are two lifting parts, which are respectively connected to the two ends of the reinforcing rod.

7. The assembly platform component according to claim 1, characterized in that, The station also includes a guardrail installed on the standing platform. The guardrail has a C-shaped structure, and the opening of the C-shaped structure is set opposite to the production line platform.

8. The assembly platform component according to claim 1, characterized in that, The maximum number of people that the standing platform can hold is r, and the assembly platform component also includes: Detection elements are used to obtain the number 'a' of people borne on the standing platform in real time; and The workstation switching element includes 2r workstation switching buttons. The workstation switching element is connected to the detection element and the lifting unit respectively. The lifting unit is configured to start when the number of personnel a provided by the detection element is obtained, and when a≤r and 2a workstation switching buttons are started simultaneously.

9. The assembly platform component according to any one of claims 1-8, characterized in that, A storage slot is provided on the ground. In the first state, the standing platform is located in the storage slot, so that the upper surface of the standing platform is flush with the ground.

10. A vehicle frame production line, characterized in that, The invention includes a production line platform and an assembly platform assembly as described in any one of claims 1-9, wherein the production line platform is used to place a vehicle frame, and the assembly platform assemblies are spaced apart along the extension direction of the production line platform.

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