Chassis conveying equipment for automobile final assembly production

Abstract

The invention discloses chassis conveying equipment for automobile assembly production, and belongs to the technical field of automobile assembly equipment. The equipment comprises a hanging bracket, the hanging bracket is movably installed on a conveying rail, and the hanging bracket defines a containing space suitable for installing at least one chassis; the positioning device is detachably mounted in the hanging bracket, is used for limiting the position of the automobile chassis and comprises a supporting main body, and a chassis supporting plate suitable for mounting the automobile chassis is arranged on the upper side of the supporting main body; the clamping plates are located on the upper side of the supporting body, the clamping plates are switched between a first position and a second position under the action of a driving assembly, and when the clamping plates are located at the first position, the clamping plates are matched with the chassis supporting plate to clamp the automobile chassis; when the clamping plate is located at the second position, the clamping plate is far away from the chassis supporting plate so as to assemble and disassemble the automobile chassis. The automobile chassis can be accurately positioned, and it is ensured that when the chassis reaches an assembly station, the spatial position precision of the chassis meets the high-precision assembly requirement.

Description

Technical Field

[0001] This invention relates to the field of automobile assembly equipment technology, and more particularly to a chassis conveying device for automobile assembly production. Background Technology

[0002] In the automotive final assembly process, chassis conveying is a crucial link connecting the three core processes of welding, painting, and final assembly, and its conveying performance directly determines the overall operating efficiency of the production line. The chassis conveying system's operation process usually begins after the electrophoretic drying process in the painting workshop. Its main responsibility is to stably and accurately transport the treated body-in-white or pre-assembled chassis modules to the final assembly line, providing a fundamental guarantee for subsequent key processes such as interior assembly, powertrain assembly, and suspension system installation.

[0003] Existing automotive chassis conveying equipment is ineffective in positioning the chassis and is prone to insufficient synchronization during transport. This problem directly leads to misalignment between the chassis and the body or other components to be assembled when the chassis is transported to the subsequent assembly area. This misalignment not only affects the smooth progress of subsequent assembly processes and reduces assembly efficiency, but also causes collision damage to parts, affecting the quality of automotive assembly. Summary of the Invention

[0004] Therefore, this invention proposes a chassis conveying equipment for automobile assembly production that can accurately position and synchronously transport components.

[0005] To address the aforementioned technical problems, the present invention provides the following technical solution: A chassis conveying device for automobile assembly production includes: a hanger movably mounted on a conveying track, the hanger forming a receiving space suitable for mounting at least one chassis; and a positioning device detachably mounted within the hanger to limit the position of the automobile chassis, comprising: a support body having a chassis support plate on its upper side suitable for mounting the automobile chassis; and at least one set of clamping plates located on the upper side of the support body, the clamping plates switching between a first position and a second position under the action of a drive assembly; when the clamping plates are in the first position, they cooperate with the chassis support plate to clamp the automobile chassis; and when the clamping plates are in the second position, they move away from the chassis support plate to load and unload the automobile chassis.

[0006] In some embodiments of the present invention, the driving assembly includes: a fixed support frame, the fixed support frame having a pivot portion on its upper side; at least one set of swing plates pivotally connected to the fixed support frame, the clamping plate being fixedly connected to the side of the swing plates away from the pivot portion; and a linear actuator, the output end of the linear actuator acting on the swing plates, adapted to control the swing plates and clamping plates to switch between a first position and a second position.

[0007] In some embodiments of the present invention, two sets of clamping plates and two sets of swing plates are respectively provided, two sets of pivoting parts are provided on the fixed support frame, and the two sets of swing plates are respectively pivotally connected to the two pivoting parts of the fixed support frame; one set of linear actuators is provided, and the linear actuators act on the two sets of swing plates through transition connecting brackets.

[0008] In some embodiments of the present invention, the transition connection bracket includes a transition connection plate extending in a horizontal direction, and vertical lifting plates located on both sides of the transition connection plate and extending in a vertical direction, wherein the upper end of the vertical lifting plate contacts the bottom surface of the swing plate.

[0009] In some embodiments of the present invention, the positioning device further includes a base, the supporting body and the linear actuator are fixedly mounted on the base, and the base is provided with a connecting part suitable for detachable connection with the hanger.

[0010] In some embodiments of the present invention, the positioning device further includes at least one set of auxiliary positioning plates, which are movable in the horizontal direction to approach or move away from the chassis support plate and are used to limit the horizontal position of the vehicle chassis.

[0011] In some embodiments of the present invention, at least one set of cleaning agent nozzles connected to a cleaning agent supply line is also included. The cleaning agent nozzles are movable in a vertical direction to approach or move away from the chassis support plate, and are suitable for spraying and cleaning the vehicle chassis mounted on the chassis support plate.

[0012] In some embodiments of the present invention, the chassis support plate is further provided with a recycling tank, which is suitable for recycling cleaning agents.

[0013] In some embodiments of the present invention, at least one set of jet frames is fixedly connected to the outside of the hanger, and the jet frames and the hanger are slidably mounted on the conveying track via rollers located on the top of the jet frames.

[0014] In some embodiments of the present invention, a first jet head is provided on the upper side of the jet frame, and the first jet head sprays air toward the conveying rail; a second jet head is provided on the lower side of the jet frame, and the second jet head sprays air toward the bottom of the vehicle chassis located on the chassis support plate.

[0015] The technical solution of the present invention has the following technical effects compared with the prior art: The chassis conveying equipment for automobile assembly production provided by this invention achieves precise positioning of the automobile chassis by integrating a positioning device with a clamping plate and a drive assembly within the hanger. The stable clamping force formed by the clamping plate and the chassis support plate can effectively resist vibration and inertial forces during the conveying process, ensuring that the spatial position accuracy of the chassis meets the requirements of high-precision automated assembly when it arrives at the assembly station. Attached Figure Description

[0016] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, which will help to understand the purpose and advantages of the present invention, wherein: Figure 1 This is a schematic diagram of the chassis conveying equipment for automobile assembly production without the positioning device installed according to the present invention. Figure 2 This is a schematic diagram of the positioning device in the chassis conveying equipment for automobile assembly production according to the present invention. Detailed Implementation

[0017] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0020] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0021] like Figure 1 , Figure 2 The diagram illustrates a specific embodiment of the chassis conveying equipment (hereinafter referred to as chassis conveying equipment) for automobile final assembly production provided by the present invention. The chassis conveying equipment mainly includes a hanger 100 and a positioning device 200.

[0022] The hanger 100 has an overall frame structure and is movably mounted on the conveyor rail 600 of the factory via a set of wheels. The interior of the hanger 100 encloses a hollow, large-volume storage space, designed to accommodate and install at least one automobile chassis (not shown in the figure). The hanger 100, as the main load-bearing structure, is responsible for transporting the positioning device 200 and the automobile chassis between various workstations on the final assembly line.

[0023] The positioning device 200 is used for precise positioning and clamping of the vehicle chassis within the hanger 100, and is detachably installed within the receiving space of the hanger 100. Specifically, the positioning device 200 includes a base 250, which is constructed as a rectangular frame structure, serving as the supporting base for the entire positioning device 200. The bottom or side of the base 250 is provided with a connecting part that can be detachably connected to the hanger 100. Specifically, this connecting part can be configured as multiple connecting holes distributed circumferentially along the base 250, which are suitable for bolt fastening components to pass through, thereby detachably fixing the base 250 to the bottom crossbeam of the hanger 100. Through this modular base structure, the entire positioning device 200 can be quickly installed onto or removed from the hanger 100 as a single unit, facilitating overall replacement or offline maintenance according to different vehicle model requirements, thus improving the flexibility and changeover efficiency of the production line.

[0024] Specifically, the positioning device 200 includes a support body 210 mounted on the base 250. The two are rigidly connected by welding, bolting, or positioning pins to ensure the positional stability of the support body 210 during operation. The support body 210 includes a bottom support frame 211 and a chassis support plate 212 located on the upper side of the bottom support frame 211. The surface shape of the chassis support plate 212 matches the key load-bearing points (such as the planar areas of longitudinal beams and transverse beams) of the vehicle chassis to be assembled, and is used to support the vehicle chassis and provide it with a stable initial mounting plane.

[0025] The positioning device 200 further includes at least one set of clamping plates 230 located above the support body 210. In this embodiment, as... Figure 2As shown, two sets of clamping plates 230 are provided, corresponding to the longitudinal beams on both sides of the vehicle chassis or designated clamping points, respectively. Driven by the drive assembly 240, the clamping plates 230 can switch between a first position and a second position. When the clamping plate 230 is in the first position, it presses against the designated clamping surface of the vehicle chassis, working together with the chassis support plate 212 to clamp and fix the vehicle chassis, forming a stable clamping force closed loop to ensure that the chassis does not shift during subsequent assembly (such as tightening bolts or installing pipelines). When the clamping plate 230 is in the second position, it moves away from the chassis support plate 212 to release the constraint on the vehicle chassis, thereby allowing the loading and unloading of the vehicle chassis. This switchable clamping structure satisfies the stable positioning requirements during the conveying process and ensures smooth chassis movement during workstation switching.

[0026] like Figure 2 As shown, the drive assembly 240 includes: a fixed support frame 241, a swing plate 242, and a linear actuator 243.

[0027] The fixed support frame 241 is a rigid structural component, and its bottom is fixedly installed on the base 250 or the fixed end of the linear actuator 243. A pivot part 2411 is provided on the upper side of the fixed support frame 241. The pivot part 2411 can be a protruding ear plate with a pivot hole.

[0028] The swing plate 242 is a long, strip-shaped plate-like component, one end of which is pivotally connected to a pivot part 2411 on a fixed support frame 241 via a pivot. The swing plate 242 can swing around the pivot part 2411 at a certain angle. The clamping plate 230 is fixedly connected to the side of the swing plate 242 away from the pivot part 2411 (i.e., the free end). This lever-like structure can effectively transmit the stroke and force of the driving force. More specifically, the free end of the swing plate 242 has a mounting hole, and a connecting screw is fixedly installed on the upper side of the clamping plate 230. The connecting screw passes through the mounting hole and is locked and its position adjusted by adjusting nuts located on the upper and lower sides of the swing plate 242. By rotating the adjusting nuts, the extension length of the clamping plate 230 relative to the swing plate 242 can be changed, thereby adjusting the final pressing position of the clamping plate 230 in the clamping state, so that it can accurately adapt to the spatial coordinate differences of the clamping points on different models of automobile chassis. This adjustable connection structure allows operators to finely calibrate the clamping position during the initial equipment debugging phase, ensuring that the clamping force is accurately applied to the load-bearing points designed for the chassis. On the other hand, when the production line switches to different vehicle models, there is no need to replace the entire clamping plate assembly; simply adjusting the connecting screw is sufficient to quickly adapt to the new clamping position requirements, further improving the flexibility of the positioning device and the efficiency of production changeover.

[0029] The linear actuator 243 can be a pneumatic cylinder, a hydraulic cylinder, or an electric push rod. Its cylinder body is fixedly mounted on the base 250, and its output end (such as a piston rod) acts on the swing plate 242. Specifically, the output end of the linear actuator 243 can be hinged to the side of the swing plate 242 near the pivot 2411. When the output end of the linear actuator 243 extends, it pushes the swing plate 242 to swing upwards around the pivot 2411, thereby lifting the clamping plate 230 upwards and switching to the second position (released state). Conversely, when the output end retracts, it pulls the swing plate 242 downwards, causing the clamping plate 230 to press downwards and switching to the first position (clamping state). Through precise control of the linear actuator 243, precise application and stable maintenance of clamping force can be achieved, avoiding the problems of inconsistent force and low efficiency in traditional manual locking mechanisms.

[0030] To achieve a more stable and balanced clamping force on the vehicle chassis, two sets of clamping plates 230 and two sets of swing plates 242 are respectively provided. Correspondingly, the fixed support frame 241 is provided with two sets of pivoting parts 2411. The two sets of swing plates 242 are pivotally connected to the two pivoting parts 2411 via independent pivots. The two sets of clamping plates 230 can be symmetrically arranged on both sides of the vehicle chassis to form two-point or more multi-point clamping, effectively resisting the chassis's rotational tendency in the horizontal plane and providing higher positioning stability.

[0031] To simplify the drive structure, reduce manufacturing costs, and ensure the synchronization of the movements of the two sets of clamping plates 230, such as Figure 2 As shown, only one set of linear actuators 243 is provided, and they act simultaneously on two sets of swing plates 242 through a transition connecting bracket. This converts the motion of a single power source into multi-point output, ensuring synchronicity and avoiding problems such as uneven clamping force or chassis deformation caused by asynchronous multiple power sources.

[0032] Specifically, the transition connection bracket includes a transition connection plate 244 extending horizontally, and vertical lifting plates 245 located on both sides of the transition connection plate 244 and extending vertically. The center of the transition connection plate 244 is fixedly connected to the output end of the linear actuator 243. The upper surfaces of the vertical lifting plates 245 on both sides are machined into smooth planes or arc surfaces, respectively contacting the bottom surfaces of the two sets of swing plates 242. When the linear actuator 243 is activated, its output end drives the entire transition connection bracket to rise or fall. When the transition connection bracket rises, the vertical lifting plates 245 lift the swing plates 242, causing the clamping plate 230 to switch to the second position (release); when the transition connection bracket falls, the swing plates 242 fall under their own weight, causing the clamping plate 230 to switch to the first position (clamp). This contact transmission structure is simple and reliable, allowing the swing plates 242 to produce slight relative sliding with the vertical lifting plates 245 during swinging, avoiding over-positioning and ensuring smooth transmission.

[0033] Specifically, to further improve the positioning quality of the positioning device, the positioning device 200 also includes at least one set of auxiliary positioning plates 260. The auxiliary positioning plates 260 are mounted on the base 250 via a horizontally positioned linear drive mechanism (such as a cylinder or electric actuator). The auxiliary positioning plates 260 can move horizontally to approach or move away from the chassis support plate 212. After the vehicle chassis is hoisted onto the chassis support plate 212, the auxiliary positioning plates 260 act first, pushing the chassis horizontally to approximately the center or a predetermined area of ​​the chassis support plate 212. This "pre-positioning" action effectively corrects large initial positional deviations of the chassis during hoisting, such as lateral shifts or rotations. This provides a good positional basis for the subsequent precision clamping of the clamping plate 230, reduces the initial deviations that the clamping plate 230 needs to overcome during clamping, avoids uneven clamping force or misalignment of clamping points due to excessive deviation, thereby protecting chassis components from accidental damage and improving the reliability and repeatability of clamping.

[0034] Considering that the surface of the automobile chassis may be contaminated with oil, rust-preventive oil, dust, and other pollutants before final assembly, which can affect the quality of subsequent bonding, gluing, or bolting connections, this embodiment integrates a cleaning function into the positioning device 200. Specifically, the positioning device 200 also includes at least one set of cleaning agent nozzles 270 connected to a cleaning agent supply pipeline. These cleaning agent nozzles 270 are mounted on the base 250 via a vertically positioned lifting mechanism (such as a miniature cylinder). The cleaning agent nozzles 270 can move vertically and retract to a low position when not in use to avoid interfering with chassis assembly and disassembly; when cleaning is required, they rise to a working position, approaching the bottom of the automobile chassis on the chassis support plate 212, and spray atomized cleaning agent or friction enhancer onto designated areas of the automobile chassis (such as the surface to be glued or the bolted connection surface). The atomized cleaning agent can effectively penetrate and dissolve stubborn oil stains, while the friction enhancer can increase the coefficient of friction of the connection surface, providing better torque retention for subsequent tightening processes.

[0035] To facilitate the use of cleaning agents and prevent their accumulation on the chassis surface or dripping onto the ground, causing contamination, this embodiment also includes a recovery tank 2121 on the chassis support plate 212. This recovery tank 2121 can be an annular groove surrounding the edge of the chassis support plate 212, or several guide channels designed according to the chassis structure. The recovery tank 2121 is connected to a waste liquid collection container via a pipeline. When the cleaning agent nozzle 270 sprays cleaning fluid, any dripping or flowing cleaning agent along the chassis surface is effectively collected by the recovery tank 2121 and guided into the waste liquid container. This design not only maintains a clean working environment and prevents secondary pollution, but also avoids corrosion of other equipment components by the cleaning agent, extending the equipment's service life.

[0036] During chassis transport, dust, sludge, and other contaminants may accumulate between the transport track 600 and the traveling wheels of the hanger 100, causing the traveling wheels to slip and affecting the traveling accuracy of the hanger 100 and the final stopping accuracy of the positioning device 200. To solve this problem, this embodiment integrates a self-cleaning function on the outside of the hanger 100.

[0037] like Figure 1 As shown, the chassis conveying equipment also includes at least one set of jet frames 400. The jet frames 400 surround the outer side of the hanger 100 from both the left and right sides, forming a semi-enclosed structure around the hanger 100, and move together with the hanger 100. Rollers 500 are connected to the top of the jet frames 400, and these rollers 500 are slidably mounted on the conveying track 600 as the traveling wheels of the hanger 100 and the jet frames 400. The arrangement of the jet frames 400 increases the stability of the hanger 100 running on the track and provides a mounting basis for its jet cleaning function.

[0038] Specifically, the jet frame 400 is constructed as a tubular frame structure, with its internal hollow cavity forming an air source flow channel, thus directly integrating the air source onto the jet frame 400 body, forming a modular air supply unit. This integrated design eliminates the need for additional external air supply pipelines, significantly simplifying the equipment's pipeline layout, avoiding problems such as pipeline entanglement and wear during operation, and improving the overall reliability and aesthetics of the equipment. A first jet head 410 is located on the upper side of the jet frame 400, with its nozzle facing the contact surface between the conveyor track 600 and the roller 500. During equipment operation, the first jet head 410 continuously or intermittently sprays high-pressure gas onto the surface of the conveyor track 600, blowing away dust, debris, and other contaminants adhering to the track surface. This "source cleaning" strategy effectively prevents slippage between the roller 500 and the conveyor track 600 caused by the accumulation of contaminants, ensuring the smooth movement of the hanger 100 and the accuracy of repeated stops.

[0039] Simultaneously, a second jet head 420 is provided on the lower side of the jet frame 400. The second jet head 420 is also connected to the tubular cavity through an integrated air passage within the jet frame 400, with its jet nozzle facing the bottom of the vehicle chassis located on the chassis support plate 212. This second jet head 420 adopts a flat fan-shaped nozzle structure, and the airflow it emits is shaped by a special flow channel inside the nozzle to form a continuous and uniform fan-shaped air curtain. This fan-shaped air curtain, once unfolded, has a large coverage width, capable of fully covering key areas of the lower surface of the vehicle chassis, ensuring the integrity and uniformity of the cleaning action. During the cleaning process, when the cleaning agent nozzle 270 sprays cleaning agent onto the upper surface of the vehicle chassis, dissolved contaminants and excess cleaning agent liquid drip down along the chassis edge or through pre-drilled holes. The fan-shaped air curtain ejected by the second jet head 420 can promptly blow away these downward-dripping pollutants and guide them to the recovery tank 2121 on the chassis support plate 212. This effectively prevents pollutants from adhering to the surfaces of other equipment components, avoiding secondary pollution and slippage hazards caused by the accumulation of pollutants.

[0040] Multiple second jet heads 420 can be configured and arranged at different positions on the jet frame 400 at specific angles (such as an angle of 30°-60° with the horizontal plane). The fan-shaped air curtains of each nozzle are connected to each other to form a combined air curtain that covers the entire area of ​​the lower surface of the chassis.

[0041] Specifically, the hanger 100 can accommodate multiple sets of positioning devices 200, for example, such as Figure 1 As shown, the hanger 100 can accommodate four sets of positioning devices 200, which are arranged sequentially along the conveying direction of the hanger 100. Doors for opening or closing the accommodating space of the hanger 100 are respectively provided on the front and rear sides, and on the left or right side of the middle area.

[0042] The following section will describe in detail the process of the chassis conveyor in a complete working cycle, taking into account the structural composition of the aforementioned equipment.

[0043] 1. Loading and pre-positioning stage: First, the positioning device 200 is pre-adjusted to the loading state. At this time, the clamping plate 230 is in the second position (raised state), and the auxiliary positioning plate 260 is in the retracted state away from the chassis support plate 212, providing an unobstructed support platform for the placement of the car chassis. Subsequently, external hoisting equipment (such as an aerial trolley or a robotic arm) lifts the car chassis and places it smoothly on the chassis support plate 212 of the positioned device 200, completing the initial positioning of the chassis on the positioning device. At this point, the car chassis and the positioning device 200 have been combined into a single unit.

[0044] Open the door of the hanger 100, and hoist the entire positioning device 200 module, which carries the vehicle chassis, into the receiving space of the hanger 100 via the connecting parts (such as connecting holes and bolt fastening components) on the base 250, forming a rigid connection with the bottom crossbeam of the hanger 100. After the positioning device 200 is installed in place, close the door of the hanger 100 to create a relatively enclosed working environment, providing good protection for subsequent cleaning and conveying processes.

[0045] Subsequently, the auxiliary positioning plate 260 is activated, and its horizontal drive mechanism pushes the auxiliary positioning plate 260 towards the chassis support plate 212, gently pushing the chassis from both sides or all around to control the initial position deviation of the chassis within the allowable range, thus completing the coarse positioning of the chassis. At this point, the loading and pre-positioning stage is complete, and the equipment can proceed to the next cleaning stage.

[0046] 2. Cleaning stage: After coarse positioning, the cleaning process begins. Driven by a vertical lifting mechanism, the cleaning agent nozzle 270 rises to a preset working position, approaching the bottom of the vehicle chassis. Simultaneously, the external cleaning agent supply line opens, and the cleaning agent nozzle 270 evenly sprays atomized cleaning agent onto key areas of the vehicle chassis surface (such as longitudinal beam connection surfaces and rear axle mounting points). While spraying, the second jet head 420, fixed to the outer jet frame 400 of the hanger 100, begins operation, spraying out a tilted, high-speed compressed airflow. This airflow acts on the chassis surface, assisting in the diffusion and penetration of the cleaning agent, efficiently removing oil stains; the liquid dissolving the dirt and excess cleaning agent flows directionally into the recovery tank 2121, achieving immediate collection of contaminants. At the same time, the first jet head 410 on the upper side of the jet frame 400 also starts synchronously, continuously spraying high-pressure gas onto the surface of the conveyor rail 600, removing dust, sludge, and other impurities from the rail, ensuring stable friction and no slippage between the rollers and the conveyor rail 600 during subsequent conveying. After the cleaning process has continued for the predetermined time, the cleaning agent nozzle 270 stops spraying and retracts to its initial position. The second jet nozzle 420 and the first jet nozzle 410 also stop spraying, waiting to enter the next stage.

[0047] 3. Precise positioning and clamping stage: After the cleaning process is completed, the precise positioning stage begins. At this time, the linear actuator 243 starts to operate. The output end of the linear actuator 243 retracts, causing the entire transition connecting bracket to descend. The vertical lifting plates 245 on both sides of the transition connecting bracket descend accordingly, releasing the support for the swing plates 242. Under their own gravity, the two sets of swing plates 242 swing downward synchronously around the pivot 2411, causing the clamping plates 230 fixed to their free ends to move downward, gradually approaching and finally pressing against the preset clamping surfaces on both sides of the car chassis. As the linear actuator 243 continues to apply pressure, a stable clamping force is formed between the clamping plates 230 and the chassis support plate 212, precisely locking the car chassis in a three-dimensional spatial position that meets the assembly process requirements. At this time, the clamping plates 230 switch to the first position. Since the auxiliary positioning plate 260 has completed coarse positioning, the clamping process of the clamping plates 230 is smooth and precise, without needing to overcome excessive initial deviations, ensuring the accuracy of the clamping point and the uniformity of the clamping force.

[0048] 4. Conveying and Assembly Stage: After precise positioning and clamping, the hanger 100 and the jetting frame 400 move synchronously along the conveyor track 600 under the action of the linear drive device, transporting the positioned car chassis to the subsequent assembly station. Throughout the transport process, due to the cleaning effect of the cleaning stage on the track, the traveling wheels 110 of the hanger 100 maintain good friction with the track, ensuring smooth movement and precise positioning. Even if slight slippage occurs due to unforeseen circumstances, the clamping plate 230 firmly fixes the chassis to the positioning device 200, and the positioning device 200 itself is rigidly connected to the hanger 100. Therefore, the absolute position of the chassis will not change, ensuring that it maintains a precise posture upon reaching the next station. Upon reaching the assembly station, other assembly equipment (such as automatic tightening machines and robotic gluing systems) can directly perform precise assembly operations on the chassis without the need for secondary positioning.

[0049] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A chassis conveying device for automobile assembly production, characterized in that, include: A hanger, which is movably mounted on a conveyor rail, forms a receiving space suitable for mounting at least one chassis; A positioning device detachably mounted within a hanger to limit the position of the vehicle chassis, comprising: A supporting body, the upper side of which has a chassis support plate suitable for mounting an automobile chassis; At least one set of clamping plates is located on the upper side of the support body. The clamping plates switch between a first position and a second position under the action of the drive assembly. When the clamping plate is in the first position, it cooperates with the chassis support plate to clamp the vehicle chassis. When the clamping plate is in the second position, it moves away from the chassis support plate to load and unload the vehicle chassis.

2. The chassis conveying equipment for automobile assembly production according to claim 1, characterized in that, The driving component includes: A fixed support frame, wherein a pivot part is provided on the upper side of the fixed support frame; At least one set of swing plates is pivotally connected to the fixed support frame, and the clamping plate is fixedly connected to the side of the swing plates away from the pivot portion; A linear actuator, the output of which acts on the swing plate, is adapted to control the swing plate and clamping plate to switch between a first position and a second position.

3. The chassis conveying equipment for automobile assembly production according to claim 2, characterized in that, Two sets of clamping plates and two sets of swing plates are provided. Two sets of pivoting parts are provided on the fixed support frame. The two sets of swing plates are pivotally connected to the two pivoting parts of the fixed support frame. One set of linear actuators is provided. The linear actuators act on the two sets of swing plates through a transition connecting bracket.

4. The chassis conveying equipment for automobile assembly production according to claim 2, characterized in that, The transition connection bracket includes a transition connection plate extending in the horizontal direction and vertical lifting plates located on both sides of the transition connection plate and extending in the vertical direction, with the upper end of the vertical lifting plate in contact with the bottom surface of the swing plate.

5. The chassis conveying equipment for automobile assembly production according to claim 2, characterized in that, The positioning device also includes a base, the supporting body and the linear actuator are fixedly installed on the base, and the base is provided with a connecting part suitable for detachable connection with the hanger.

6. The chassis conveying equipment for automobile assembly production according to claim 1, characterized in that, The positioning device further includes at least one set of auxiliary positioning plates, which can move horizontally to approach or move away from the chassis support plate and are used to limit the horizontal position of the vehicle chassis.

7. The chassis conveying equipment for automobile assembly production according to claim 1, characterized in that, It also includes at least one set of cleaning agent nozzles connected to a cleaning agent supply line, the cleaning agent nozzles being movable in a vertical direction to approach or move away from the chassis support plate, suitable for spraying and cleaning the vehicle chassis mounted on the chassis support plate.

8. The chassis conveying equipment for automobile assembly production according to claim 7, characterized in that, The chassis support plate is also equipped with a recycling tank, which is suitable for recycling cleaning agents.

9. A chassis conveying device for automobile assembly production according to claim 1, characterized in that, It also includes at least one set of jet frames, which are fixedly connected to the outside of the hanger. The jet frames and the hanger are slidably mounted on the conveyor rail via rollers connected to the top of the jet frames.

10. A chassis conveying device for automobile assembly production according to claim 9, characterized in that, The upper side of the jet frame is provided with a first jet head, which sprays air towards the conveyor rail. The lower side of the jet frame is provided with a second jet head, which sprays air towards the bottom of the vehicle chassis located on the chassis support plate.

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