A suspension conveying device for shot blasting of chassis components of a sanitation vehicle

Abstract

The present application relates to the technical field of conveying device, and specifically discloses a kind of for environmental sanitation vehicle chassis component shot blasting treatment suspension conveying device, comprising: suspension conveying structure, adjusting device and adaptive shot blasting device;Suspension conveying structure can be vertically suspended fixed conveying to environmental sanitation vehicle chassis frame;Adjusting device is two groups, respectively symmetrically set in the bottom top surface of suspension conveying structure, and two groups of adjusting device can be vertically centered positioning to environmental sanitation vehicle chassis frame;Adaptive shot blasting device is set in the bottom top surface of suspension conveying structure, and adaptive shot blasting device is cooperated with two groups of adjusting device, and can meet the adaptive shot blasting of different material environmental sanitation vehicle chassis frame by relying on the adjustment of two groups of adjusting device;The present application relies on environmental sanitation vehicle chassis frame self-driven pure mechanical linkage architecture, realizes the adaptive collaborative adaptation of operation reference and process parameter, improves the wide working condition adaptation ability and stable efficient high-quality shot blasting.

Description

Technical Field

[0001] This invention relates to the field of conveying device technology, specifically to a suspended conveying device for shot blasting treatment of chassis components of sanitation vehicles. Background Technology

[0002] As the core load-bearing component of the entire vehicle, the chassis of sanitation vehicles has been in operation for a long time in heavy-duty, highly corrosive, and complex road conditions. The surface rust removal, oxide scale removal, and stress strengthening treatment of its frame structure are the core processes that directly determine the structural strength of the chassis and the service life of the entire vehicle. Shot blasting, as the mainstream process for surface modification and cleaning of metal structural parts, is widely used in the production and processing of chassis components of sanitation vehicles.

[0003] Currently, the suspended conveyor devices used for shot blasting of sanitation vehicle chassis components can only achieve basic vertical clamping and step-by-step conveying of workpieces, making it difficult to adapt to the processing needs of chassis frames of various specifications. Existing devices lack a centering positioning mechanism, and the workpieces held by the lifting devices are prone to lateral displacement, which can easily lead to uneven coverage of the shot blasting surface and incomplete cleaning in some areas. At the same time, most shot blasters are fixedly installed and cannot automatically adjust the working distance according to the thickness of the workpiece. Thick workpieces are prone to insufficient shot blasting force and poor cleaning effect, while thin workpieces are prone to over-blasting and defects such as surface deformation. In addition, existing devices cannot achieve gradient adaptation of shot blasting parameters for chassis components with different material hardness, resulting in low adaptability and processing efficiency for batch continuous operation, making it difficult to meet the large-scale production needs of sanitation vehicle chassis with multiple categories and specifications. Summary of the Invention

[0004] The purpose of this invention is to provide a suspended conveying device for shot blasting of chassis components of sanitation vehicles, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a suspended conveying device for shot blasting of sanitation vehicle chassis components, comprising: a suspended conveying structure, an adjusting device, and an adaptive shot blasting device; the suspended conveying structure is capable of vertically suspending and fixing the sanitation vehicle chassis frame for conveying; the adjusting device consists of two sets, symmetrically arranged on the bottom and top surface of the suspended conveying structure, and the two sets of adjusting devices are capable of vertically centering the sanitation vehicle chassis frame; the adaptive shot blasting device is arranged on the bottom and top surface of the suspended conveying structure, and during the centering and positioning of the sanitation vehicle chassis frame, the two sets of adjusting devices rely on the thickness of the sanitation vehicle chassis frame itself as a linkage source and work in conjunction with the adaptive shot blasting device to adaptively adjust the shot blasting distance for sanitation vehicle chassis frames of different thicknesses; the adaptive shot blasting device works in coordination with the two sets of adjusting devices, and relies on the adjustment of the two sets of adjusting devices to meet the adaptive shot blasting requirements of sanitation vehicle chassis frames of different materials.

[0006] Preferably, the adjustment device includes: a thickness adaptive component, a material adjustment component, and a first drive component; the thickness adaptive component is disposed on the bottom top surface of the suspended conveying structure, and the thickness adaptive component can be pushed and displaced by the thickness of the sanitation vehicle chassis frame itself; the output end of the material adjustment component is disposed on the outer wall of the moving end of the thickness adaptive component; the first drive component is disposed on the input end of the material adjustment component, and the first drive component can drive the material adjustment component to adjust the adaptive shot blasting of sanitation vehicle chassis frames of different materials. By integrating the thickness adaptive transmission, material gradient adjustment, and centering positioning function, a bidirectional linkage drive basis is provided for the adaptive adjustment of shot blasting, while completing the precise centering and positioning of the workpiece.

[0007] Preferably, the adaptive shot blasting device includes: a second drive assembly, a locking drive assembly, and a shot blasting assembly; the second drive assembly is disposed on the bottom top surface of the suspended conveying structure; the input end of the locking drive assembly is locked to the bottom of the moving end of one of the thickness adaptive assemblies, and the moving output end of the locking drive assembly is connected to the input end of the second drive assembly; the limiting movement of the locking drive assembly can drive the two output ends of the second drive assembly to move synchronously; there are two sets of shot blasting assemblies, symmetrically arranged on the two moving output ends of the locking drive assembly; the locking drive assembly can drive the two sets of shot blasting assemblies to move synchronously, thereby adaptively adjusting the shot blasting distance for sanitation vehicle chassis frames of different thicknesses. By combining the on / off locking linkage transmission with the bidirectional synchronous displacement adjustment structure, the shot blasting distance can be adaptively adjusted according to the workpiece thickness, ensuring the uniformity and consistency of the shot blasting operation.

[0008] Preferably, the suspended conveying structure includes: an automatic clamping and conveying hoist and a carrying platform; the automatic clamping and conveying hoist is installed on the roof frame of the shot blasting workshop, and the automatic clamping and conveying hoist can vertically clamp, fix and convey the chassis frame of the sanitation vehicle; the carrying platform is installed on the ground of the shot blasting workshop, and the vertical center axis of the automatic clamping and conveying hoist and the carrying platform coincide. By setting the top vertical clamping and conveying hoist and the bottom carrying platform coaxially aligned, a stable suspended conveying reference is provided for the workpiece, ensuring the coaxial accuracy of subsequent centering positioning and shot blasting operations.

[0009] Preferably, the thickness adaptive component includes: a triangular support frame, a hydraulic push rod, a first support plate, a first electric push rod, a second support plate, and a displacement detection rotary roller; the triangular support frame is disposed on the top surface of the support platform; the hydraulic push rod is disposed on the outer wall of the triangular support frame; the first support plate is disposed on the moving end of the hydraulic push rod; there are two first electric push rods, symmetrically disposed on the outer wall of the first support plate; the second support plate is disposed on the moving ends of the two first electric push rods, and the outer wall of the second support plate has a through circular groove; the displacement detection rotary roller is disposed on the outer wall of the second support plate through two bearing seats, the displacement detection rotary roller is electrically connected to the two first electric push rods, and the displacement detection rotary roller moves by being pushed by the thickness of the sanitation vehicle chassis frame itself, and can make the pushing ends of the two first electric push rods move synchronously with the displacement detection rotary roller. By linking the hydraulic feeding mechanism, the synchronous compensation of the electric push rod, and the displacement detection rotary roller, the displacement feedback is realized in real time with the thickness of the workpiece itself as the driving source, and the bidirectional centering positioning of the workpiece and the synchronous transmission of thickness parameters are completed.

[0010] Preferably, the material adjustment assembly includes: a support concave plate, a nut, a threaded rod, a return spring, and a pull plate; the support concave plate is disposed on the outer wall of the first bearing plate; the nut is sleeved inside the outer wall of the support concave plate; one end of the threaded rod is sleeved inside the nut, the threaded rod engages with the nut, and the threaded rod can rotate and move within the nut; the other end of the threaded rod is looped inside the circular groove, and the outer wall of the other end of the threaded rod has a certain distance from the inner wall of the circular groove; one end of the return spring is disposed on the outer wall of the nut, and the other end of the return spring is connected and fixed to the outer wall of the second bearing plate; the pull plate is disposed on the other end of the threaded rod, and the outer wall of the pull plate contacts the outer wall of the first bearing plate. By cooperating the threaded transmission structure, the return spring pre-tightening mechanism, and the pull plate limiting structure, a quantifiable pre-tightening stroke basis is provided for the shot blasting adjustment of workpieces of different materials, realizing gradient adjustment for material adaptation.

[0011] Preferably, the first drive assembly includes: a second electric push rod and a brake motor; the second electric push rod is disposed on the outer wall of the triangular support frame; the brake motor is disposed on the moving end of the second electric push rod, and by cooperating with the axial feed of the electric push rod and the rotational drive of the brake motor, controllable driving power is provided for the material adjustment assembly, ensuring precise docking and start-stop control of the adjustment action.

[0012] Preferably, the rotating end of the brake motor is fixedly connected to one end of the threaded rod. The threaded rod and the brake motor work together to drive the threaded rod to rotate and pull the retractable plate. At the same time, the threaded rod works with the two first electric push rods to limit the movement of the displacement detection rotating roller, thereby squeezing the return spring to adjust the operation of the chassis frame of sanitation vehicles of different materials. By coordinating the screw rotation transmission driven by the motor with the synchronous displacement compensation of the electric push rod, the preload of the return spring can be precisely adjusted, and the differentiated adaptation of shot blasting operation of workpieces with different hardness materials can be completed.

[0013] Preferably, the second drive assembly includes: a support base, a gear, a driven rack, and an L-shaped limiting moving block; the support base is disposed on the top surface of the bearing platform, the support base has a cavity, the outer wall of the support base has a through first moving groove, and the top surface of the support base has two symmetrical second moving grooves, all of which extend into the cavity; the gear is disposed on the bottom surface of the inner wall of the cavity via a bearing; there are two driven racks, one end of which is symmetrically and alternately disposed on the outer wall of the gear. Furthermore, the outer walls of the two driven racks contact the inner walls of the chamber on both sides and form a limit, and both driven racks mesh with the bottom of the gear; there are two L-shaped limiting moving blocks, one end of which is respectively set at the other end of the two driven racks, and the other end of the two L-shaped limiting moving blocks is movably embedded in the two second moving slots. By cooperating with the symmetrical meshing transmission of the single gear and double driven racks and the limiting slot guide structure, the synchronous bidirectional movement of the two sets of shot blasting components is realized, ensuring the synchronicity and coaxiality of the shot blasting distance adjustment.

[0014] Preferably, the locking drive assembly includes: a movable transmission rod, an active rack, an automatic locking rod, and a locking plate; one end of the movable transmission rod is movably embedded in the first movable groove, and the other end of the movable transmission rod extends into the cavity; the active rack is disposed at one end of the movable transmission rod, and the active rack meshes with the top of the gear; the automatic locking rod is disposed at the other end of the movable transmission rod; the locking plate is disposed on the outer wall of the second support plate, and the movable end of the automatic locking rod moves to contact the locking plate, thereby connecting and fixing the connecting part of the locking plate to the second support plate; the second support plate moves according to the thickness of the sanitation vehicle chassis frame itself, so that the second support plate drives the locking plate to drive the active rack to move and drive the gear to rotate, thereby the gear rotation drives the two driven racks to drive the L-shaped limit moving blocks to move synchronously. By cooperating the unlockable locking structure with the gear and rack transmission link, the transmission link on / off control of thickness adaptive adjustment and material adaptation adjustment is realized, avoiding interference between different adjustment processes.

[0015] Preferably, the shot blasting assembly includes: an L-shaped support plate and shot blasters; the L-shaped support plate is disposed at the other end of one of the L-shaped limiting moving blocks; there are three shot blasters, each disposed on the outer wall of the L-shaped support plate, and all three shot blasters are connected to an external shot supply device; the two L-shaped limiting moving blocks can drive the two sets of shot blasting assemblies to move synchronously, thereby adjusting the distance between the six shot blasters and the chassis frame, and adaptively adjusting the shot blasting for chassis of different thicknesses. By symmetrically arranging multiple sets of shot blasters in an array and cooperating with the linkage displacement adjustment structure, full coverage of double-sided shot blasting of workpieces and precise distance adjustment are achieved, taking into account both the shot blasting cleaning effect and the surface forming quality of workpieces of different thicknesses.

[0016] The beneficial effects of this invention are as follows: 1. The vertical suspension conveyor system, coupled with the coaxial bottom support platform, eliminates the blind spots in shot blasting caused by horizontal workpiece clamping. The vertical centering of the workpiece is achieved through two sets of symmetrically arranged adjustment devices, which can correct the lateral offset caused by the initial clamping of the lifting device, provide a unified and stable benchmark for shot blasting operations, and ensure the consistency of shot blasting coverage of the entire workpiece surface.

[0017] 2. Relying on the thickness of the workpiece itself as the linkage source, the shot blasting components on both sides are driven to move synchronously towards or away from each other through a mechanical linkage structure. No additional independent control commands are required to match the shot blasting distance of workpieces with different thicknesses. This effectively avoids the problem of insufficient shot blasting force and incomplete cleaning of thick workpieces, while preventing the surface deformation of thin workpieces due to excessive shot blasting, thus improving the stability of shot blasting operation quality.

[0018] 3. An independent material adjustment component and a switchable transmission link are set up to decouple the action of thickness adaptive adjustment and material matching adjustment, avoiding action interference between different processes; by adjusting the preload of the reset spring, the shot blasting parameters can be adjusted in a gradient manner to meet the shot blasting and surface strengthening requirements of chassis components with different hardness materials, and improve the flexible processing adaptability of the device.

[0019] 4. For workpieces of the same batch and specifications, after the initial material adaptation adjustment is completed, subsequent operations only need to rely on the thickness of the workpiece itself to automatically complete the centering positioning and shot blasting distance adjustment; in conjunction with the stepping suspension conveyor structure, it can realize the synchronous connection of the entire process of feeding, positioning, adjustment, shot blasting and discharge, and improve the continuity and efficiency of production operations. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the suspended conveyor structure of the present invention; Figure 3 This is a schematic diagram of the position structure of the adjusting device of the present invention; Figure 4 for Figure 3 Enlarged view of point A in the image; Figure 5 This is a schematic diagram of the position structure of the circular groove within the thickness adaptive component of the present invention; Figure 6 This is a schematic diagram showing the disassembled structure of the material adjustment component of the present invention; Figure 7 This is a schematic diagram of the positional structure of the adaptive shot blasting device of the present invention; Figure 8 for Figure 7 Enlarged view of point B in the image; Figure 9 This is a schematic diagram of the adaptive shot blasting device of the present invention; Figure 10 This is a schematic diagram of the structure within a cross-section of the second drive component of the present invention; Figure 11 This is a schematic diagram of the connecting component within the cross-section of the second driving component of the present invention.

[0021] In the diagram: 1. Suspended conveyor structure; 11. Automatic clamping and conveying hoist; 12. Bearing platform; 2. Adjustment device; 21. Thickness adaptive component; 211. Triangular bearing frame; 212. Hydraulic push rod; 213. First bearing plate; 214. First electric push rod; 215. Second bearing plate; 216. Circular groove; 217. Displacement detection rotating roller; 22. Material adjustment component; 221. Support concave plate; 222. Nut; 223. Threaded rod; 224. Return spring; 225. Pull plate; 23. First drive group Components; 231, Second electric push rod; 232, Brake motor; 3, Adaptive shot blasting device; 31, Second drive assembly; 311, Support base; 312, Chamber; 313, First moving groove; 314, Second moving groove; 315, Gear; 316, Driven rack; 317, L-shaped limiting moving block; 32, Locking drive assembly; 321, Moving transmission rod; 322, Active rack; 323, Automatic locking rod; 324, Locking plate; 33, Shot blasting assembly; 331, L-shaped bearing plate; 332, Shot blaster. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. 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.

[0023] Please see Figures 1-11This invention provides a suspended conveying device for shot blasting of sanitation vehicle chassis components, comprising: a suspended conveying structure 1, an adjusting device 2, and an adaptive shot blasting device 3; the suspended conveying structure 1 vertically suspends and fixes the sanitation vehicle chassis frame; two sets of adjusting devices 2 are symmetrically arranged on the bottom and top surfaces of the suspended conveying structure 1, enabling vertical centering of the sanitation vehicle chassis frame; the adaptive shot blasting device 3 is located on the bottom and top surfaces of the suspended conveying structure 1, and during the centering process of the sanitation vehicle chassis frame, the two sets of adjusting devices 2 rely on the thickness of the sanitation vehicle chassis frame itself as a linkage source, and work in conjunction with the adaptive shot blasting device 3 to adaptively adjust the shot blasting distance for sanitation vehicle chassis frames of different thicknesses; the adaptive shot blasting device 3 and the two sets of adjusting devices... The device, with its coordinated operation and the adjustment of two sets of adjustment devices 2, can meet the adaptive shot blasting requirements of sanitation vehicle chassis frames made of different materials. Through the linkage of the suspended conveying structure 1, the two sets of adjustment devices 2, and the adaptive shot blasting device 3, the entire process of vertical conveying, centering, and adaptive adjustment of shot blasting parameters of the sanitation vehicle chassis frame is realized. Relying on the thickness of the workpiece itself as the linkage source, the shot blasting distance of workpieces of different thicknesses can be adaptively adjusted without additional independent control commands. At the same time, the coordinated operation of adjustment device 2 and adaptive shot blasting device 3 can adapt to the shot blasting requirements of workpieces of different materials, greatly improving the flexible processing adaptability of the device, effectively ensuring the uniformity and consistency of workpiece shot blasting operations, avoiding defects such as incomplete shot blasting cleaning, and improving the continuous production efficiency of shot blasting operations for sanitation vehicle chassis components.

[0024] As a preferred option, further, such as Figure 3 , Figure 4 and Figure 6As shown, the adjustment device 2 includes: a thickness adaptive component 21, a material adjustment component 22, and a first drive component 23; the thickness adaptive component 21 is disposed on the bottom top surface of the suspended conveyor structure 1, and the thickness adaptive component 21 can be pushed and displaced by the thickness of the sanitation vehicle chassis frame itself; the output end of the material adjustment component 22 is disposed on the outer wall of the moving end of the thickness adaptive component 21; the first drive component 23 is disposed on the input end of the material adjustment component 22, and the first drive component 23 can drive the material adjustment component 22 to adjust the adaptive shot blasting of sanitation vehicle chassis frames of different materials; through the adjustment device 2... The thickness adaptive component 21, the material adjustment component 22, and the first drive component 23 work together to integrate three major functions: centering the chassis frame of the sanitation vehicle, transmitting thickness parameters in linkage, and adjusting the material adaptation gradient. This achieves centering and linkage displacement output without additional control commands, using the thickness of the workpiece itself as the driving source. Furthermore, the first drive component 23 drives the material adjustment component 22 to achieve precise and controllable adjustment of shot blasting parameters for workpieces of different materials. This significantly improves the device's adaptability and adjustment accuracy for sanitation vehicle chassis frames of different thicknesses and materials, providing reliable structural support for the uniformity and consistency of shot blasting operations.

[0025] As a preferred option, further, such as Figure 7 , Figure 8 , Figure 9 and Figure 11As shown, the adaptive shot blasting device 3 includes: a second drive assembly 31, a locking drive assembly 32, and a shot blasting assembly 33; the second drive assembly 31 is disposed on the bottom top surface of the suspended conveying structure 1; the input end of the locking drive assembly 32 is locked to the bottom of the moving end of one of the thickness adaptive assemblies 21, and the moving output end of the locking drive assembly 32 is connected to the input end of the second drive assembly 31, and the limiting movement of the locking drive assembly 32 can drive the two output ends of the second drive assembly 31 to move synchronously; there are two sets of shot blasting assemblies 33, which are symmetrically arranged on the two moving output ends of the locking drive assembly 32, and the locking drive assembly 32 can drive the two sets of shot blasting assemblies 33 to move synchronously, thereby adaptively adjusting the shot blasting distance for sanitation vehicle chassis frames of different thicknesses; through The adaptive shot blasting device 3 integrates a second drive component 31, a locking drive component 32, and a shot blasting component 33, enabling purely mechanical adaptive adjustment of the shot blasting distance according to the workpiece thickness. The locking drive component 32 ensures controllable connection of the transmission link between the positioning process and the shot blasting adjustment process. The second drive component 31 ensures the synchronicity and coaxiality of the displacement adjustment of the two sets of shot blasting components 33, effectively solving the problems of uneven double-sided coverage and inconsistent force in shot blasting operations. This not only ensures the shot blasting cleaning quality of workpieces of different thicknesses but also eliminates the defects of over-shot blasting and surface deformation of thin plate workpieces. It significantly improves the device's adaptability to workpieces of different specifications and simplifies the device's control logic, adapting to the continuous and batch shot blasting production needs of sanitation vehicle chassis components.

[0026] As a preferred option, further, such as Figure 2 As shown, the suspended conveying structure 1 includes an automatic clamping and conveying hoist 11 and a carrying platform 12. The automatic clamping and conveying hoist 11 is installed on the roof frame of the shot blasting workshop, and can vertically clamp, fix, and convey the chassis frame of sanitation vehicles. The carrying platform 12 is installed on the ground of the shot blasting workshop, and the vertical center axis of the automatic clamping and conveying hoist 11 and the carrying platform 12 coincide. Through the coaxial alignment of the automatic clamping and conveying hoist 11 and the carrying platform 12 integrated in the suspended conveying structure 1, the vertical stable clamping, precise stepping conveying, and operation of the chassis frame of sanitation vehicles are achieved. The coaxial alignment of the reference and the vertical clamping method effectively eliminate the blind spots in shot blasting caused by horizontal workpiece clamping, ensuring uniform shot blasting coverage of the entire workpiece surface. The design of the automatic clamping and conveying hoist 11 and the bearing platform 12 coinciding with the vertical center axis avoids the reference deviation during workpiece clamping and conveying from the source, providing a stable and unified reference for subsequent processing operations. At the same time, the bearing platform 12 provides reliable rigid support for the supporting operating components, ensuring the stability, accuracy and continuity of the overall operation of the device, and adapting to the batch and continuous shot blasting production needs of sanitation vehicle chassis components.

[0027] As a preferred option, further, such as Figure 3 , Figure 4 and Figure 5 As shown, the thickness adaptive component 21 includes: a triangular support frame 211, a hydraulic push rod 212, a first support plate 213, a first electric push rod 214, a second support plate 215, and a displacement detection rotating roller 217; the triangular support frame 211 is disposed on the top surface of the support platform 12; the hydraulic push rod 212 is disposed on the outer wall of the triangular support frame 211; the first support plate 213 is disposed on the moving end of the hydraulic push rod 212; there are two first electric push rods 214, which are symmetrically disposed on the outer wall of the first support plate 213; the second... The support plate 215 is disposed at the moving end of the two first electric push rods 214, and the outer wall of the second support plate 215 is provided with a through circular groove 216; the displacement detection rotating roller 217 is disposed on the outer wall of the second support plate 215 through two bearing seats, the displacement detection rotating roller 217 is electrically connected to the two first electric push rods 214, and the displacement detection rotating roller 217 moves by pushing against the thickness of the sanitation vehicle chassis frame itself, and can make the pushing end of the two first electric push rods 214 move synchronously with the displacement detection rotating roller 217; Through the coordinated operation of the triangular support frame 211, hydraulic push rod 212, first support plate 213, first electric push rod 214, second support plate 215, and displacement detection rotating roller 217 integrated in the thickness adaptive component 21, the centering positioning of the sanitation vehicle chassis frame and the real-time conversion and transmission of workpiece thickness parameters are achieved. The triangular support frame 211 provides a stable rigid bearing reference for the entire assembly, the hydraulic push rod 212 ensures stable large-stroke drive of the feed action, and the first support plate 213 and second support plate 215 provide precise installation support for each functional component. The synchronous design of the roller 217 and the two first electric push rods 214 enables closed-loop adjustment without additional control, using the workpiece's own thickness as the driving source. This ensures the coaxial accuracy of the workpiece's centering and accurately converts the workpiece thickness into the driving displacement for subsequent linkage adjustment. The circular groove 216 on the outer wall of the second bearing plate 215 provides a suitable space for the linkage and cooperation of the supporting components. The entire set of components has a compact structure, high adjustment accuracy, and fast response speed, which greatly improves the device's adaptability to sanitation vehicle chassis frames of different thicknesses and provides reliable structural and transmission support for the adaptive adjustment of subsequent shot blasting operations.

[0028] As a preferred option, further, such as Figure 4 and Figure 6As shown, the material adjustment assembly 22 includes: a support concave plate 221, a nut 222, a threaded rod 223, a return spring 224, and a pull plate 225; the support concave plate 221 is disposed on the outer wall of the first bearing plate 213; the nut 222 is sleeved inside the outer wall of the support concave plate 221; one end of the threaded rod 223 is sleeved inside the nut 222, the threaded rod 223 and the nut 222 are engaged, and the threaded rod 223 can rotate and move within the nut 222; the other end of the threaded rod 223 is sleeved in a circular groove 216, and the outer wall of the other end of the threaded rod 223 is spaced apart from the inner wall of the circular groove 216; one end of the return spring 224 is disposed on the outer wall of the nut 222, and the other end of the return spring 224 is connected and fixed to the outer wall of the second bearing plate 215; the pull plate 225 is disposed on the other end of the threaded rod 223, and the outer wall of the pull plate 225 is connected to the outer wall of the first bearing plate 213. The outer wall of 13 is in contact; through the coordinated cooperation of the support concave plate 221, nut 222, threaded rod 223, return spring 224 and pull plate 225 integrated by the material adjustment component 22, the gradient and precise adjustment of shot blasting operation parameters of sanitation vehicle chassis frame of different materials is realized. The support concave plate 221 provides a stable rigid installation and limit reference for the whole set of components. The thread engagement transmission of nut 222 and threaded rod 223 realizes precise quantitative control of adjustment stroke. The adjustment requirements of different material workpieces can be accurately matched by the number of rotations. The return spring 224 not only realizes the stepless adjustment of elastic preload, but also provides stable displacement compensation and automatic reset function for the operation process. The pull plate 225 realizes the stability and non-eccentric load transmission of axial tension of threaded rod 223, providing reliable structural support for shot blasting cleaning and strengthening operations of workpieces of different materials.

[0029] As a preferred option, further, such as Figure 4 , Figure 5 and Figure 6 As shown, the first drive assembly 23 includes: a second electric push rod 231 and a brake motor 232; the second electric push rod 231 is disposed on the outer wall of the triangular support frame 211; the brake motor 232 is disposed on the moving end of the second electric push rod 231; the rotating end of the brake motor 232 is connected and fixed to one end of the threaded rod 223, and the threaded rod 223 and the brake motor 232 cooperate to drive the threaded rod 223 to rotate and pull the retractable plate 225, and at the same time cooperate with the two first electric push rods 214 to limit the movement of the displacement detection rotating roller 217, thereby squeezing the reset spring 224 to adjust the operation of the chassis frame of sanitation vehicles of different materials; During the pulling and retracting process of the pull plate 225, the second bearing plate 215 is simultaneously driven to generate a corresponding axial displacement. At this time, the two first electric push rods 214 and the displacement detection rotating roller 217 are electrically connected and move synchronously, driving the displacement detection rotating roller 217 to perform limit movement synchronously with the second bearing plate 215. Throughout the process, the displacement detection rotating roller 217 maintains stable contact with the workpiece plate surface without damaging the completed workpiece centering positioning reference. At the same time, the displacement of the second bearing plate 215 synchronously compresses the return spring 224, causing the return spring 224 to generate a controllable compression preload force, which is controlled by the brake motor 2. The rotation number of 32, steering, and braking start / stop can precisely adjust the compression and preload of the return spring 224, ultimately achieving differentiated adaptation and adjustment for shot blasting operations on the chassis frames of sanitation vehicles made of different materials. After adjustment, the brake motor 232 locks, locking the axial position of the threaded rod 223 to ensure that the preload is stable and does not decay. After the operation is completed, the brake motor 232 rotates in the opposite direction, and together with the elastic force of the return spring 224, it drives each component to reset. The second electric push rod 231 drives the brake motor 232 to retract, disconnecting the transmission link and avoiding interference with subsequent thickness adaptive adjustment. Through the coordinated operation of the second electric push rod 231 integrated in the first drive assembly 23 and the brake motor 232, precise and controllable feed docking and rotation drive power are provided for the material adaptation and adjustment process. The second electric push rod 231 ensures the coaxial accuracy of the docking between the brake motor 232 and the threaded rod 223, and at the same time realizes the controllable on / off of the drive transmission link, completely avoiding the interference of the drive components on the thickness adaptive adjustment process. With its precise rotation control and braking locking capability, the brake motor 232 can precisely drive the threaded rod 223 to complete the quantitative rotation adjustment. With the synchronous action of the first electric push rod 214 and the displacement detection rotating roller 217, the preload of the return spring 224 is precisely controlled without destroying the workpiece centering positioning reference. This realizes the gradient and precision adaptation adjustment of shot blasting operations on the chassis frame of sanitation vehicles of different materials. The entire drive assembly has a compact structure, high control precision, and stable and reliable transmission, which greatly improves the flexibility and operational stability of the device.

[0030] As a preferred option, further, such as Figure 8 , Figure 9 , Figure 10 and Figure 11As shown, the second drive assembly 31 includes: a support base 311, a gear 315, a driven rack 316, and an L-shaped limiting moving block 317; the support base 311 is disposed on the top surface of the bearing platform 12, and a cavity 312 is formed inside the support base 311. A through first moving groove 313 is formed on the outer wall of the support base 311, and two symmetrical second moving grooves 314 are formed on the top surface of the support base 311. The first moving groove 313 and the two second moving grooves 314 all extend into the cavity 312; the gear 315 is mounted in the cavity via a bearing. The bottom surface of the inner wall of chamber 312; two driven racks 316, one end of which is symmetrically and alternately arranged on the outer wall of gear 315, and the outer walls of the two driven racks 316 contact the two sides of the inner wall of chamber 312 and form a limit, and the two driven racks 316 mesh with the bottom of gear 315; two L-shaped limiting moving blocks 317, one end of which is respectively arranged on the other end of the two driven racks 316, and the other ends of the two L-shaped limiting moving blocks 317 are movably embedded in two second moving grooves 314; through The second drive assembly 31 integrates a support base 311, gear 315, driven rack 316, and L-shaped limiting moving block 317. The coordinated operation of these components enables precise conversion from single power input to dual-path synchronous bidirectional linear displacement. The support base 311 and its internal chamber 312 provide stable load-bearing for the transmission structure. The first moving groove 313 and the second moving groove 314 provide precise limiting guidance for the power input and output components, completely avoiding swaying and jamming problems during transmission. The gear 315 meshes with two staggered symmetrically engaged... The synchronous transmission structure formed by the driven rack 316 ensures the absolute synchronicity and equidistantness of the dual-path output displacement, eliminating displacement deviation of the dual-side adjustment at the source. The interlocking and limiting design of the L-shaped limiting moving block 317 and the second moving groove 314 further ensures the straightness of the output displacement and the transmission rigidity. The entire assembly has a compact structure, high transmission accuracy, good synchronization and stable and reliable operation, providing precise and stable transmission support for the adaptive adjustment of the shot blasting operation distance, and effectively ensuring the uniformity and consistency of the dual-side shot blasting operation.

[0031] As a preferred option, further, such as Figure 7 , Figure 8 , Figure 9 , Figure 10 and Figure 11As shown, the locking drive assembly 32 includes: a movable transmission rod 321, a drive rack 322, an automatic locking rod 323, and a locking plate 324; one end of the movable transmission rod 321 is movably embedded in the first movable groove 313, and the other end of the movable transmission rod 321 extends into the chamber 312; the drive rack 322 is disposed at one end of the movable transmission rod 321, and the drive rack 322 meshes with the top of the gear 315; the automatic locking rod 323 is disposed at the other end of the movable transmission rod 321; the locking plate 324 is disposed at... On the outer wall of the second bearing plate 215, the moving end of the automatic locking rod 323 moves to contact the locking plate 324, thereby connecting and fixing the connecting parts of the locking plate 324 to the second bearing plate 215, and causing the second bearing plate 215 to move through the thickness of the sanitation vehicle chassis frame itself, so that the second bearing plate 215 drives the locking plate 324 to drive the active rack 322 to move and drive the gear 315 to rotate, thereby the gear 315 rotates and drives the two driven racks 316 to drive the L-shaped limit moving blocks 317 to move synchronously. Through the coordinated operation of the movable transmission rod 321, active rack 322, automatic locking rod 323, and locking plate 324 integrated in the locking drive assembly 32, the controllable on / off switching of the transmission link between thickness adaptive adjustment and shot blasting drive adjustment, as well as the precise synchronous transmission of power, are achieved. The fitting design of the movable transmission rod 321 and the first movable groove 313 provides precise limiting guidance for power transmission, ensuring the straightness of displacement transmission and transmission rigidity. The meshing transmission of the active rack 322 and the gear 315 realizes the precise conversion of the lateral displacement of the second bearing plate 215 into the rotational action of the gear 315, providing synchronous adjustment for the double-sided shot blasting structure. Providing a stable power input, the controllable locking and unlocking design of the automatic locking rod 323 and locking plate 324 not only realizes the pure mechanical closed-loop linkage adjustment with the workpiece's own thickness as the driving source, but also can quickly disconnect the transmission link to decouple the action of thickness adjustment and material adaptation adjustment, completely avoiding the action interference of different process adjustments. The entire set of components has fast transmission response, high transmission accuracy, and flexible and reliable on / off control. It not only ensures the synchronization and accuracy of the adaptive adjustment of shot blasting distance for workpieces of different thicknesses, but also provides reliable structural support for the gradient adaptation adjustment of workpieces of different materials, greatly improving the flexibility and operational stability of the device.

[0032] As a preferred option, further, such as Figure 7 , Figure 8 , Figure 10 and Figure 11As shown, the shot blasting assembly 33 includes an L-shaped support plate 331 and shot blasters 332. The L-shaped support plate 331 is disposed at the other end of an L-shaped limiting moving block 317. Three shot blasters 332 are disposed on the outer wall of the L-shaped support plate 331, and all three shot blasters 332 are connected to an external shot supply device. The two L-shaped limiting moving blocks 317 can drive the two sets of shot blasting assemblies 33 to move synchronously, thereby adjusting the distance between the six shot blasters 332 and the chassis frame, and adaptively adjusting the shot blasting distance for chassis of different thicknesses. Through the coordinated operation of the L-shaped support plate 331 and the shot blasters 332 integrated in the shot blasting assembly 33, and the synchronous drive of the L-shaped limiting moving block 317, adaptive and precise adjustment of the shot blasting distance for sanitation vehicle chassis frames of different thicknesses is achieved. The L-shaped support plate 331 provides a stable support for the shot blasters 332. The established rigid installation benchmark ensures the installation accuracy and structural stability of the shot blasting machine 332 during operation. The array arrangement of three shot blasting machines 332 on the outer wall of a single L-shaped bearing plate 331 achieves full-range coverage of the vertical plate surface of the workpiece without blind spots, avoiding dead angles in shot blasting operations. The synchronous expansion and contraction adjustment of the two sets of shot blasting components 33 ensures the consistency of the shot blasting distance on both sides of the workpiece, eliminating the defects of uneven shot blasting force and inconsistent cleaning effect on both sides from the root. It can accurately adapt the optimal shot blasting distance for chassis frames of different thicknesses, ensuring the shot blasting cleaning effect of thick plate workpieces while eliminating the deformation and damage problems of thin plate workpieces. The entire component structure is highly rigid, with uniform operation coverage and rapid adjustment response, which greatly improves the quality stability of shot blasting operations on the chassis frames of sanitation vehicles and the adaptability to workpieces of different specifications.

[0033] Its detailed connection methods are well-known technologies in this field. The following mainly introduces the working principle and process, and the specific work is as follows: The first process, vertical suspension and centering of the workpiece: Initial loading: The automatic clamping and conveying hoist 11 vertically clamps and fixes the chassis frame of the sanitation vehicle and conveys it to the top of the bearing platform 12, so that the workpiece is initially aligned with the vertical center axis of the bearing platform 12, completing the initial positioning; during this process, the initial clamping of the hoist will cause the workpiece to have a lateral offset error, providing adjustment margin for the centering adjustment in this process; Centering feed start: Two sets of symmetrically arranged adjustment devices 2 are started simultaneously, and two sets of thickness adaptive components 21 are activated synchronously: the hydraulic push rod 212 on the triangular support frame 211 pushes the first support plate 213, the first electric push rod 214, the second support plate 215 and the displacement detection rotating roller 217 to feed as a whole toward the workpiece until the roller surfaces of the two displacement detection rotating rollers 217 on both sides simultaneously form contact with the two sides of the workpiece. Centered positioning closed loop: The displacement detection rotating rollers 217 on both sides use the thickness of the workpiece itself as the pushing source, and generate lateral displacement during the contact process; the displacement detection rotating rollers 217 are electrically connected to the two first electric push rods 214, driving the pushing end of the first electric push rods 214 to move synchronously with the displacement detection rotating rollers 217, forming a bidirectional balanced centering clamping force on the workpiece, correcting the lateral offset caused by the initial clamping of the lifting device, and finally making the vertical center axis of the workpiece completely coincide with the center axis of the automatic clamping and conveying lifting device 11 and the bearing platform 12, completing the centering positioning of the workpiece, providing a uniform radial working reference for subsequent shot blasting operations, and ensuring the consistency of shot blasting coverage of the entire plate surface; Auxiliary limiting: The first bearing plate 213 provides rigid support and lateral limiting for the full movement of the displacement detection rotating roller 217, avoiding radial sway during displacement and ensuring the accuracy of centering and positioning.

[0034] The second process is the adaptive adjustment of shot blasting distance based on workpiece thickness. This process is a basic operation mode, suitable for shot blasting of workpieces with low hardness. The entire process uses the workpiece's own thickness as the sole driving force, requiring no additional control commands, and achieving purely mechanical closed-loop adaptive adjustment. The specific operation flow is as follows: Transmission link pre-connection: While completing the centering and positioning of the workpiece, the automatic locking rod 323 in the locking drive assembly 32 is in the initial locking state. Its moving end is rigidly locked and fixed to the locking plate 324 on the outer wall of the second bearing plate 215 on the corresponding side, so that the lateral displacement of the second bearing plate 215 can be synchronously transmitted to the locking drive assembly 32, and the transmission link between the thickness adaptive assembly 21 and the adaptive shot blasting device 3 is established. Displacement synchronous transmission: The lateral displacement generated by the displacement detection rotating roller 217 due to the workpiece thickness is synchronously transmitted to the second bearing plate 215. The second bearing plate 215 drives the moving transmission rod 321 to move synchronously laterally along the first moving groove 313 of the support seat 311 through the snap-fit ​​plate 324 and the automatic snap-fit ​​rod 323. The active rack 322 at the end of the moving transmission rod 321 completes the translation synchronously. Gear and rack synchronous transmission: During the translation of the driving rack 322, it drives the gear 315 meshing with it to rotate in the corresponding direction; when the gear 315 rotates, it drives the two driven racks 316 that are symmetrically meshed at their bottom to move synchronously, and the two driven racks 316 respectively drive the L-shaped limiting moving block 317 to slide along the second moving groove 314 on the top surface of the support base 311; Adaptive adjustment of shot blasting distance: Two L-shaped limit moving blocks 317 drive the two sets of shot blasting components 33 to move synchronously, realizing adaptive adjustment of shot blasting distance. The specific adaptation logic is as follows: When the workpiece is thicker, the lateral displacement stroke of the displacement detection rotating roller 217 is greater, and the distance that the second bearing plate 215 moves outward is greater. Through the above-mentioned transmission link, the drive gear 315 rotates in the forward direction, which drives the two driven racks 316 to retract synchronously towards each other, thereby driving the two sets of shot blasting components 33 to move towards the workpiece synchronously, shortening the working distance between the shot blaster 332 and the workpiece plate surface, and ensuring the shot blasting force and cleaning effect of the thick plate workpiece. When the workpiece thickness is smaller, the lateral displacement stroke of the displacement detection rotating roller 217 is smaller, and the distance that the second bearing plate 215 moves inward is greater. Through the above-mentioned transmission link, the drive gear 315 rotates in the opposite direction, which drives the two driven racks 316 to expand synchronously in opposite directions, thereby driving the two sets of shot blasting components 33 to move away from the outside synchronously, increasing the working distance between the shot blaster 332 and the workpiece plate surface, and avoiding the problem of excessive shot blasting and plate surface deformation of thin plate workpieces. Shot blasting operation execution: After the shot blasting distance is adaptively adjusted, the two groups of six shot blasters 332 start synchronously, and in conjunction with the external shot supply equipment, perform uniform shot blasting on the centered workpiece.

[0035] The third process, shot blasting strengthening adaptive adjustment process based on workpiece material: When the workpiece is made of a high-hardness material, it is necessary to further reduce the shot blasting distance and improve the shot blasting strengthening effect. This process uses a disconnectable transmission link to decouple material adjustment from thickness adjustment, avoiding interference during the adjustment process. The specific operation flow is as follows: Unlocking the transmission link: First, the automatic locking rod 323 in the locking drive assembly 32 is controlled to perform the unlocking action, releasing the rigid connection between the automatic locking rod 323 and the locking plate 324, so that the transmission link between the second bearing plate 215 and the moving transmission rod 321 and the active rack 322 is completely disconnected; at this time, the lateral movement of the second bearing plate 215 and the displacement detection rotating roller 217 will not cause any movement of the adaptive shot blasting device 3, providing an independent adjustment space for material adjustment and avoiding adjustment interference; Material matching preload adjustment: The first drive component 23 in both sets of adjustment devices 2 is activated simultaneously to complete the material matching preload stroke adjustment. The specific actions are as follows: The second electric push rod 231 pushes the brake motor 232 to feed towards the workpiece, so that the rotation output end of the brake motor 232 and the input end of the thread rod 223 are coaxially connected. Start the brake motor 232 to drive the threaded rod 223 to rotate in the nut 222 inside the support concave plate 221 and move axially away from the workpiece; the pull plate 225 at the end of the threaded rod 223 simultaneously pulls the second bearing plate 215 to move outward, squeezing the return spring 224 to generate a compression preload. During this process, the first electric push rod 214 and the displacement detection rotating roller 217 maintain an electrical connection and move synchronously to ensure that the roller surface of the displacement detection rotating roller 217 always maintains stable contact with the workpiece plate surface and does not damage the completed centering positioning reference. Transmission Link Reset and Secondary Adaptive Adjustment: After the pre-tightening adjustment is completed, the automatic locking rod 323 is controlled to perform the locking action again, and rigidly locks with the locking plate 324 again, restoring the transmission link between the second bearing plate 215 and the adaptive shot blasting device 3; at this time, the compression pre-tightening force of the reset spring 224 provides an additional inward pushing force for the displacement detection rotating roller 217, which, together with the feed of the hydraulic push rod 212, causes the displacement detection rotating roller 217 to generate an additional inward displacement stroke; this displacement stroke, through the complete transmission link of the second process, drives the two sets of shot blasting components 33 to further retract and approach the workpiece, realizing the adaptive adjustment of the closer shot blasting distance required for high-hardness material workpieces; Gradient adaptation: For workpieces with different hardness, the axial displacement of the threaded rod 223 can be adjusted by the brake motor 232, thereby adjusting the compression preload of the return spring 224, so as to achieve gradient adaptive adaptation of shot blasting strengthening parameters for workpieces of different materials, and meet the shot blasting cleaning and strengthening requirements of different strengths. The fourth process, continuous batch operation process: For the chassis frames of sanitation vehicles of the same type and batch, whose thickness and material parameters are consistent, after the initial material adaptation adjustment is completed, there is no need to repeat the material adjustment step of the third process in subsequent continuous operations; only the thickness of the workpiece itself needs to be used as the driving source to repeatedly complete the centering positioning of the first process and the adaptive adjustment of the shot blasting distance of the second process, so as to realize continuous and batch adaptive shot blasting operations. Synchronous connection of feeding and discharging: The automatic clamping and conveying hoist 11 adopts a stepping conveying mode. While the workpiece is output after the operation is completed, the next workpiece to be processed is simultaneously conveyed to the work station. When the workpiece enters the space between the displacement detection rotating rollers 217 on both sides, it simultaneously enters the working area of ​​the two sets of shot blasting components 33, realizing the synchronous connection of the entire process of feeding, positioning, adjustment, shot blasting and discharging, which greatly improves the work efficiency.

[0036] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A suspended conveying device for shot blasting treatment of chassis components of sanitation vehicles, characterized in that, include: The suspended conveying structure (1) is capable of vertically suspending and fixing the chassis frame of sanitation vehicles for conveying. Two sets of adjustment devices (2) are symmetrically arranged on the bottom top surface of the suspended conveyor structure (1). The two sets of adjustment devices (2) can vertically center the chassis frame of the sanitation vehicle. An adaptive shot blasting device (3) is installed on the bottom top surface of the suspended conveying structure (1). During the centering and positioning of the sanitation vehicle chassis frame, the two sets of adjustment devices (2) rely on the thickness of the sanitation vehicle chassis frame itself as the linkage source and work in conjunction with the adaptive shot blasting device (3) to adaptively adjust the shot blasting distance for sanitation vehicle chassis frames of different thicknesses. The adaptive shot blasting device (3) works in coordination with the two sets of adjustment devices (2) and, based on the adjustment of the two sets of adjustment devices (2), can meet the adaptive shot blasting requirements of sanitation vehicle chassis frames of different materials. The suspended conveyor structure (1) includes: An automatic clamping and conveying hoist (11) is installed on the top frame of the shot blasting workshop. The automatic clamping and conveying hoist (11) can vertically clamp, fix and convey the chassis frame of sanitation vehicles. The support platform (12) is installed on the ground of the shot blasting workshop, and the vertical center axis of the automatic clamping and conveying hoist (11) coincides with that of the support platform (12). The regulating device (2) includes: Thickness adaptive component (21) is disposed on the bottom top surface of the suspended conveying structure (1). The thickness adaptive component (21) can be pushed and displaced by the thickness of the sanitation vehicle chassis frame itself. The output end of the material adjustment component (22) is disposed on the outer wall of the moving end of the thickness adaptive component (21); The first drive component (23) is located at the input end of the material adjustment component (22). The first drive component (23) can drive the material adjustment component (22) to adjust the adaptive shot blasting of the chassis frame of sanitation vehicles with different materials. The adaptive shot blasting device (3) includes: The second drive assembly (31) is disposed on the bottom top surface of the suspended conveyor structure (1); The input end of the locking drive component (32) is locked to the bottom of the moving end of one of the thickness adaptive components (21). The moving output end of the locking drive component (32) is connected to the input end of the second drive component (31). The limiting movement of the locking drive component (32) can drive the two output ends of the second drive component (31) to move synchronously. There are two sets of shot blasting components (33), which are symmetrically arranged at the two moving output ends of the locking drive component (32). The locking drive component (32) can drive the two sets of shot blasting components (33) to move synchronously, thereby adaptively adjusting the shot blasting distance for sanitation vehicle chassis frames of different thicknesses.

2. The suspended conveying device for shot blasting treatment of chassis components of sanitation vehicles according to claim 1, characterized in that, The thickness adaptive component (21) includes: A triangular support frame (211) is disposed on the top surface of the support platform (12); A hydraulic push rod (212) is disposed on the outer wall of the triangular support frame (211); The first bearing plate (213) is disposed at the moving end of the hydraulic push rod (212); There are two first electric push rods (214), which are symmetrically arranged on the outer wall of the first bearing plate (213); The second support plate (215) is disposed at the moving end of the two first electric push rods (214), and the outer wall of the second support plate (215) is provided with a through circular groove (216). The displacement detection rotating roller (217) is mounted on the outer wall of the second bearing plate (215) via two bearing seats. The displacement detection rotating roller (217) is electrically connected to two first electric push rods (214). The displacement detection rotating roller (217) moves by pushing against the thickness of the sanitation vehicle chassis frame itself, and the pushing ends of the two first electric push rods (214) move synchronously with the displacement detection rotating roller (217).

3. A suspended conveying device for shot blasting treatment of chassis components of sanitation vehicles according to claim 2, characterized in that, The material adjustment component (22) includes: A support recess (221) is disposed on the outer wall of the first bearing plate (213); Nut (222) is fitted into the outer wall of the support recess (221); A threaded rod (223) is fitted into the nut (222) at one end. The threaded rod (223) engages with the nut (222) and can rotate and move within the nut (222). The other end of the threaded rod (223) is fitted into the circular groove (216), and there is a certain distance between the outer wall of the other end of the threaded rod (223) and the inner wall of the circular groove (216). A return spring (224) is provided at one end on the outer wall of the nut (222), and the other end of the return spring (224) is connected and fixed to the outer wall of the second bearing plate (215); A pull plate (225) is disposed at the other end of the threaded rod (223), and the outer wall of the pull plate (225) is in contact with the outer wall of the first bearing plate (213).

4. A suspended conveying device for shot blasting treatment of chassis components of sanitation vehicles according to claim 3, characterized in that, The first driving component (23) includes: The second electric push rod (231) is disposed on the outer wall of the triangular support frame (211); A brake motor (232) is located at the moving end of the second electric push rod (231).

5. A suspended conveying device for shot blasting treatment of chassis components of sanitation vehicles according to claim 4, characterized in that, The rotating end of the brake motor (232) is fixedly connected to one end of the threaded rod (223). The threaded rod (223) and the brake motor (232) work together to drive the threaded rod (223) to rotate and pull the retractable plate (225). At the same time, it works with the two first electric push rods (214) to limit the movement of the displacement detection rotating roller (217), thereby squeezing the reset spring (224) to adjust the operation of the chassis frame of sanitation vehicles made of different materials.

6. A suspended conveying device for shot blasting treatment of chassis components of sanitation vehicles according to claim 5, characterized in that, The second driving component (31) includes: A support base (311) is disposed on the top surface of the bearing platform (12). A cavity (312) is provided inside the support base (311). A through first moving groove (313) is provided on the outer wall of the support base (311). Two symmetrical second moving grooves (314) are provided on the top surface of the support base (311). The first moving groove (313) and the two second moving grooves (314) all extend into the cavity (312). The gear (315) is mounted on the bottom surface of the inner wall of the chamber (312) via a bearing; There are two driven racks (316), one end of which is symmetrically arranged on the outer wall of the gear (315). The outer walls of the two driven racks (316) are in contact with the inner walls of the chamber (312) on both sides and form a limit. Both driven racks (316) mesh with the bottom of the gear (315). There are two L-shaped limiting moving blocks (317), one end of which is respectively set at the other end of the two driven racks (316), and the other end of the two L-shaped limiting moving blocks (317) is respectively movably embedded in the two second moving slots (314).

7. A suspended conveying device for shot blasting treatment of chassis components of sanitation vehicles according to claim 6, characterized in that, The card lock drive component (32) includes: The movable transmission rod (321) is movably embedded in the first movable groove (313) at one end, and the movable transmission rod (321) extends into the cavity (312) at the other end. An active rack (322) is disposed at one end of the movable transmission rod (321), and the active rack (322) meshes with the top of the gear (315); An automatic locking lever (323) is disposed at the other end of the movable transmission lever (321); A snap-fit ​​plate (324) is disposed on the outer wall of the second support plate (215). The moving end of the automatic snap-fit ​​rod (323) moves to contact the snap-fit ​​plate (324), thereby connecting and fixing the connecting parts of the snap-fit ​​plate (324) to the second support plate (215). The second support plate (215) moves by the thickness of the sanitation vehicle chassis frame itself, so that the second support plate (215) drives the snap-fit ​​plate (324) to drive the active rack (322) to move and drive the gear (315) to rotate. Thus, the gear (315) rotates and drives the two driven racks (316) to drive the L-shaped limit moving block (317) to move synchronously.

8. A suspended conveying device for shot blasting treatment of chassis components of sanitation vehicles according to claim 7, characterized in that, The shot blasting assembly (33) includes: An L-shaped support plate (331) is disposed at the other end of one of the L-shaped limiting moving blocks (317); There are three shot blasters (332), which are respectively set on the outer wall of the L-shaped support plate (331). All three shot blasters (332) are connected to the external shot supply equipment. The two L-shaped limiting moving blocks (317) can drive the two sets of shot blasting components (33) to move synchronously, thereby adjusting the distance between the six shot blasters (332) and the chassis frame, and adaptively adjusting the shot blasting for chassis of different thicknesses.

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