A polishing device for frame machining

Abstract

This invention discloses a grinding equipment for vehicle frame processing, comprising a belt conveyor for driving the vehicle frame, a double-sided pneumatic centering machine installed at the bottom of the belt conveyor frame, and a roller frame installed at the outlet end of the belt conveyor. The roller frame has a roller conveyor line installed inside to receive the vehicle frame from the belt conveyor. A lifting assembly is installed on one side of the top of the roller frame, and a support beam extending along the width direction of the roller frame is installed at the drive end of the lifting assembly. Both sides of the bottom end of the support beam are slidably and symmetrically mounted with a dual-sided grinding assembly. This invention integrates conveying, positioning, lifting, traction, and simultaneous dual-sided grinding, transforming intermittent production into a continuous grinding mode. It achieves efficient, precise, and continuous grinding of the left and right inner and outer walls of long-specification trailer frames, effectively shortening the overall grinding time for a single frame.

Description

Technical Field

[0001] This invention relates to the field of sheet metal grinding technology, specifically a grinding device for vehicle frame processing. Background Technology

[0002] The trailer frame is the core structure of a trailer, mainly composed of longitudinal beams, cross beams, and connectors. It bears the load, connects to the tractor unit, and transmits traction force, and is generally quite long. During the welding and assembly of the frame, weld slag, spatter, and irregular burrs often accumulate near the weld points. To adapt to the development trend of intelligent manufacturing, automated grinding units or robotic intelligent grinding systems can be introduced to achieve intelligent and standardized grinding operations. In this case, intelligent grinding equipment or traditional grinding equipment can be used to remove sharp burrs and spatter, smoothing rough weld seams and base material surfaces, laying a solid foundation for subsequent high-quality painting processes. During operation, protective equipment must be worn to ensure safety, and appropriate grinding tools and equipment should be selected, such as handheld angle grinders or pneumatic grinders. The grit of the grinding wheel or sandpaper should be adjusted according to the frame material and the burr condition. In an intelligent manufacturing system, grinding quality and efficiency can also be optimized through data integration and adaptive control of process parameters. During the operation, the frame must be fixed firmly. The staff should apply force evenly and move the polishing equipment slowly to ensure that every corner is carefully treated, and avoid over-polishing in some areas or damaging the material.

[0003] As disclosed in the authorization announcement number CN215616947U, a sheet metal part surface uniform grinding device for processing flatbed semi-trailer bodies includes a processing platform, a left control console, a dust cover, a lower slot rotating shaft, and a telescopic rod. The processing platform is symmetrically provided with transmission rollers on both sides, and the lower side of the transmission rollers is connected to an inclined baffle. The left control console and the right control console are located above the processing platform. The dust cover is connected to the left control console and the right control console. The lower slot rotating shaft is located on one side of the lower grinding roller. The telescopic rod is installed between the left control console and the right control console and the processing platform. It drives the upper grinding roller and the lower grinding roller on both sides to rotate, so as to grind the upper and lower surfaces of the sheet metal parts.

[0004] However, in actual operation, the long trailer frame that has been initially welded and assembled contains several equally spaced connecting beams. The presence of these connecting beams plays a crucial role in the overall strength and rigidity of the frame. At this point, the equally spaced connecting beams divide the complete internal space of the frame into independent compartments. When the operator needs to grind the left or right inner wall of a certain compartment, the crossbeam directly in front of it will directly affect the continuity of the welding, and vice versa. This means that for any given compartment, the operator can only access the inner wall on that side and cannot access the other side. Therefore, the operator needs to frequently adjust the angle and position of the tools during grinding to adapt to the gaps and shape changes between different connecting beams. This causes the total operation time of the frame to almost double, and there is a lot of repetitive movement, positioning, and waiting time, which seriously restricts the production efficiency of the frame. Summary of the Invention

[0005] The purpose of this invention is to provide a grinding device for vehicle frame processing. A long trailer frame to be ground on the left and right inner walls and left and right outer walls is placed on a belt conveyor and a roller conveyor line. A double-sided pneumatic centering machine aligns and calibrates the frame during the conveying process until the area to be ground between two adjacent crossbeams of the frame moves to the dual-sided grinding assembly. The control panel and lifting assembly drive the support beam, the lead screw bidirectional traction module, and the two dual-sided grinding assemblies to move down. Each dual-sided grinding assembly corresponds to one outer wall and one inner wall of the frame. After the height position is adjusted, the lead screw bidirectional traction module drives the two dual-sided grinding assemblies to move closer or further apart. The key shaft adjustable transmission structure, the dual-output shaft reduction motor, the dual-sided grinding assembly, and the lead screw bidirectional traction module work together to grind the inner and outer walls of the frame, thereby solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a grinding device for vehicle frame processing, comprising a belt conveyor for driving the vehicle frame to move, a double-sided pneumatic centering machine installed at the bottom end of the belt conveyor frame, and a roller frame installed at the outlet end of the belt conveyor. The roller frame has a roller conveyor line installed inside to receive the vehicle frame from the belt conveyor. A lifting assembly is installed on one side of the top of the roller frame, and a support beam extending along the width direction of the roller frame is installed at the drive end of the lifting assembly. A dual-sided grinding assembly with a connecting disc is symmetrically mounted on both sides of the bottom end of the support beam along its own length direction. The dual-sided grinding assembly with a connecting disc is used to grind the vehicle frame. The inner or outer wall of the roller frame is ground. A screw bidirectional traction module for driving two connected disc double-sided grinding assemblies to slide towards each other is installed on one outer wall of the support beam. A key shaft adjustable transmission structure is provided below the support beam to keep the two connected disc double-sided grinding assemblies in power connection. A double-output shaft geared motor for inputting rotational power to the key shaft adjustable transmission structure is installed at the top of one of the connected disc double-sided grinding assemblies. A control panel is installed on one outer wall of the roller frame. The output end of the control panel is electrically connected to the input end of the double-sided pneumatic centering machine, the lifting assembly, the screw bidirectional traction module, and the double-output shaft geared motor.

[0007] Preferably, the double-sided pneumatic centering machine includes a double-layer steel frame fixed to the bottom of the belt conveyor frame, U-shaped sliding plates slidably installed at the left and right positions inside the double-layer steel frame, and F-shaped upright plates integrally formed on the far-away top edges of the two U-shaped sliding plates. Long line wheel sets are installed on the opposite outer walls of the two F-shaped upright plates. A central rotating arm is rotatably installed at the center position of the bottom of the double-layer steel frame. Pull arms are hinged to both ends of the central rotating arm. One end of the pull arm is hinged to the top of the U-shaped sliding plate. A cylinder for driving the central rotating arm to rotate is hinged to one side of the bottom of the double-layer steel frame. The top of the piston rod of the cylinder is hinged to one side of the bottom of the central rotating arm.

[0008] Preferably, the long-line wheel assembly includes a wheel frame welded and fixed inside the F-shaped vertical plate, and a plurality of rollers rotatably mounted at equal intervals along the length direction at the top of the wheel frame, wherein the length extension direction of the wheel frame is parallel to the conveying direction of the belt conveyor.

[0009] Preferably, the lifting assembly consists of a U-shaped frame and a lead screw lifting module. The U-shaped frame is fixed to the front and rear outer walls of the roller frame. The lead screw lifting module is installed inside the U-shaped frame on one side. The drive end of the lead screw lifting module is fixedly connected to one end of the support beam. The input end of the lead screw lifting module is electrically connected to the output end of the control panel.

[0010] Preferably, the dual-sided grinding assembly includes a hanger slidably mounted on one end of the support beam surface via guide rails and sliding sleeves, a main hollow shaft frame and a secondary hollow shaft frame fixedly mounted on the left and right inner walls of the hanger respectively, and several disc-type grinding structures equally spaced inside the main hollow shaft frame and the secondary hollow shaft frame. A bevel gear reversing drive is installed on the outer walls of the main hollow shaft frame and the secondary hollow shaft frame, respectively. The bevel gear reversing drive is used to transmit rotational power to one of the disc-type grinding structures, and a pulley drive structure is installed between the input shafts of the two bevel gear reversing drives.

[0011] Preferably, the disc grinding structure consists of a short gear shaft and a grinding disc. The short gear shaft is rotatably mounted inside the main hollow shaft frame via ball bearings. One end of the short gear shaft extends to the outside of the main hollow shaft frame. The grinding disc is detachably mounted on one end of the short gear shaft. The short gear shafts along the length direction inside the main hollow shaft frame mesh with each other.

[0012] Preferably, the bevel gear reversing transmission consists of a shaft housing, a double-ended bevel gear shaft, and a driven bevel gear. The shaft housing is fixed on the outer wall of the main hollow shaft frame away from the secondary hollow shaft frame. The double-ended bevel gear shaft is vertically rotatably mounted inside the shaft housing via ball bearings. The driven bevel gear is fixed at the end of one of the short gear shafts, and the driven bevel gear meshes with the lower end of the double-ended bevel gear shaft.

[0013] Preferably, the pulley drive structure is mounted on the upper end of the double-ended bevel gear shaft.

[0014] Preferably, the adjustable key shaft transmission structure includes a support plate fixed between the top ends of the main hollow shaft frame and the auxiliary hollow shaft frame, and a hollow grooved shaft rotatably mounted on the upper surface of the support plate via a bearing seat. A flat key shaft is slidably installed inside the hollow grooved shaft. A drive bevel gear is fixed at the far ends of the hollow grooved shaft and the flat key shaft. The drive bevel gear meshes with the upper end of the double-ended bevel gear shaft. The dual-output shaft reduction motor is mounted on the top end of one of the support plates, and the output shaft of the dual-output shaft reduction motor is fixedly connected to the hollow grooved shaft.

[0015] Preferably, the tray, the main hollow shaft frame, and the auxiliary hollow shaft frame are all made of stainless steel.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: The grinding equipment for chassis processing is equipped with a structure that integrates belt conveyors, double-sided pneumatic alignment machines, roller conveyors, lifting assemblies, a lead screw bidirectional traction module, two connected disc double-sided grinding assemblies, dual-output shaft geared motors, and a key shaft adjustable transmission structure. Long trailer chassis are placed on the belt conveyor and roller conveyor. The double-sided pneumatic alignment machines align and calibrate the chassis during the conveying process until the grinding area between two adjacent crossbeams of the chassis moves to the connected disc double-sided grinding assembly. The control panel and lifting assembly drive the support beams, the lead screw bidirectional traction module, and the two connected disc double-sided grinding assemblies. The two grinding assemblies are moved downwards, each corresponding to one outer wall and one inner wall of the frame. After the height position is adjusted, the two grinding assemblies are moved closer or further apart by the screw bidirectional traction module. The key shaft adjustable transmission structure, the dual output shaft reduction motor, the grinding assemblies, and the screw bidirectional traction module work together to grind the inner and outer walls of the frame. This process is repeated until the entire frame is ground. By integrating conveying, positioning, lifting, traction, and synchronous grinding on both sides, intermittent production is transformed into a continuous production grinding mode. This enables efficient, precise, and continuous grinding of the left and right inner and outer walls of long trailer frames, effectively shortening the overall grinding time of a single frame.

[0017] Secondly, the chassis is automatically conveyed by a belt conveyor and ensured to be in the correct processing position by a double-sided pneumatic centering machine, eliminating errors and time consumption caused by human positioning. Two interconnected double-sided grinding assemblies can simultaneously cover either the inner or outer wall of the chassis, efficiently processing the grinding area at each station. The chassis is then rapidly moved to the next area by a belt conveyor and roller conveyor, repeating this cycle until completion. During grinding, a lifting assembly and a lead screw bidirectional traction module precisely control the relationship between the interconnected double-sided grinding assemblies and the chassis wall surface. The precise contact position and pressure ensure that the grinding parameters remain constant and repeatable throughout the grinding range. This guarantees a highly consistent grinding effect across all areas, from the front to the back of the frame, including both the inner and outer walls, eliminating fluctuations caused by human factors. Finally, controlled by the lead screw bidirectional traction module, the two grinding assemblies can move precisely in opposite directions, allowing their end grinding sections to easily extend into the frame and stably adhere to the left and right inner walls for operation. This achieves efficient grinding of all four surfaces of the frame, both inner and outer, without requiring personnel to enter the frame. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0019] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0020] Figure 3 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 3 ;

[0021] Figure 4 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 4 ;

[0022] Figure 5 This is a three-dimensional cross-sectional structural diagram of the present invention;

[0023] Figure 6 This is a three-dimensional structural diagram of the double-sided pneumatic centering machine and belt conveyor in cooperation state according to Embodiment 2 of the present invention;

[0024] Figure 7 This is a schematic diagram of the three-dimensional structure of the double-channel pneumatic centering machine according to Embodiment 2 of the present invention;

[0025] Figure 8 This is a schematic diagram of the lifting assembly in a three-dimensional structure according to Embodiment 3 of the present invention;

[0026] Figure 9 This is a three-dimensional structural diagram of the roller frame and the double-sided grinding assembly in the assembly state according to Embodiment 3 of the present invention;

[0027] Figure 10 This is a schematic diagram of the three-dimensional structure of the dual-sided grinding assembly with a multi-disc mechanism according to Embodiment 3 of the present invention;

[0028] Figure 11 This is a three-dimensional structural diagram of the screw bidirectional traction module and the dual-sided grinding assembly in the mating state of Embodiment 3 of the present invention;

[0029] Figure 12 This is a three-dimensional structural diagram of the adjustable key shaft transmission structure according to Embodiment 3 of the present invention;

[0030] Figure 13 This is a schematic diagram of the three-dimensional cross-sectional structure of the dual-sided grinding assembly of the concentric disc type according to Embodiment 3 of the present invention. Figure 1 ;

[0031] Figure 14 This is a schematic diagram of the three-dimensional cross-sectional structure of the dual-sided grinding assembly of the concentric disc type according to Embodiment 3 of the present invention. Figure 2 .

[0032] In the diagram: 1. Belt conveyor; 2. Double-sided pneumatic centering machine; 201. Double-layer steel frame; 202. U-shaped sliding plate; 203. F-shaped upright plate; 204. Long line wheel assembly; 2041. Wheel frame; 2042. Roller; 205. Central transfer arm; 206. Pulling arm; 207. Cylinder; 3. Roller frame; 4. Roller conveyor line; 5. Lifting assembly; 501. U-shaped frame; 502. Screw lifting module; 6. Support beam; 7. Screw bidirectional traction module; 8. Connecting disc type double-sided grinding assembly; 801. Hanger; 802, Main hollow shaft bracket; 803, Auxiliary hollow shaft bracket; 804, Disc grinding structure; 8041, Short gear shaft; 8042, Grinding disc; 805, Bevel gear reversing drive; 8051, Shaft housing; 8052, Double-ended bevel gear shaft; 8053, Driven bevel gear; 806, Pulley drive structure; 9, Key shaft adjustable transmission structure; 901, Support plate; 902, Hollow grooved shaft; 903, Flat key shaft; 904, Driving bevel gear; 10, Double output shaft geared motor; 11, Control panel. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0034] Example 1, by Figures 1 to 5 The present invention includes a belt conveyor 1 for driving the movement of a vehicle frame, a double-sided pneumatic centering machine 2 installed at the bottom of the frame of the belt conveyor 1, and a roller frame 3 installed at the outlet end of the belt conveyor 1. The roller frame 3 is equipped with a roller conveyor line 4 for receiving the vehicle frame from the belt conveyor 1. A lifting assembly 5 is installed on one side of the top of the roller frame 3, and a support beam 6 extending along the width direction of the roller frame 3 is installed at the drive end of the lifting assembly 5. On both sides of the bottom end of the support beam 6, a double-sided grinding assembly 8 is slidably installed along its own length direction. The double-sided grinding assembly 8 is used to grind the inner wall or outer wall of one side of the vehicle frame. A two-way traction module 7 with a screw is installed on one outer wall of the support beam 6 for driving the two double-sided grinding assemblies 8 to slide towards each other.

[0035] The lead screw bidirectional traction module 7 controls the spacing between the two connected disc double-sided grinding assemblies 8 to accommodate frames of different widths, and selects whether the connected disc double-sided grinding assembly 8 performs grinding on the outer wall or the inner wall of the frame.

[0036] The belt conveyor 1 provides smooth and low-noise transport and can effectively support and initially position the vehicle frame. The roller frame 3 and roller conveyor line 4 are located in the main processing area. Their advantages are strong load-bearing capacity, ensuring the stability of the vehicle frame during transport, reducing vibration and displacement, and working well with the belt conveyor 1 and the double-sided pneumatic centering machine 2.

[0037] Below the support beam 6 is a key shaft adjustable transmission structure 9 for maintaining power connection between the two dual-sided grinding assemblies 8. One of the dual-sided grinding assemblies 8 is equipped with a double-output shaft geared motor 10 that inputs rotational power to the key shaft adjustable transmission structure 9. A control panel 11 is installed on one outer wall of the roller frame 3. The output end of the control panel 11 is electrically connected to the input end of the double-sided pneumatic centering machine 2, the lifting assembly 5, the lead screw bidirectional traction module 7, and the double-output shaft geared motor 10.

[0038] Example 2, based on Example 1, is... Figure 6 and Figure 7 The double-sided pneumatic centering machine 2 includes a double-layer steel frame 201 fixed to the bottom of the belt conveyor 1 frame, U-shaped sliding plates 202 slidably installed at the left and right positions inside the double-layer steel frame 201, and F-shaped vertical plates 203 integrally formed on the far-away top edges of the two U-shaped sliding plates 202. Long-line wheel sets 204 are installed on the opposite outer walls of the two F-shaped vertical plates 203. A central rotating arm 205 is rotatably installed at the center of the bottom of the double-layer steel frame 201. Both ends of the central rotating arm 205 are hinged to pull arms 206. One end of the pull arm 206 is hinged to the top of the U-shaped sliding plate 202. A cylinder 207 for driving the central rotating arm 205 to rotate is hinged to one side of the bottom of the double-layer steel frame 201. The top of the piston rod of the cylinder 207 is hinged to one side of the bottom of the central rotating arm 205. When the double-sided pneumatic centering machine 2 calibrates the position of the frame on the belt conveyor 1, the operator controls the cylinder 207 through the control panel 11. The cylinder 207 forces the central rotating arm 205 to rotate. During the rotation of the central rotating arm 205, it will drive the U-shaped slide plate 202, F-shaped upright plate 203 and long line wheel set 204 to move towards the vertical center reference plane of the belt conveyor 1 through the pull arm 206. That is, the two long line wheel sets 204 approach each other and contact the outer wall of the frame, thereby adjusting the lateral position of the frame so that it always stays on the center conveying line of the belt conveyor 1 and the roller conveyor line 4. This eliminates the risk of uneven contact or even collision between the double-sided grinding assembly 8 and the wall surface caused by the frame tilt, and provides conditions for the subsequent double-sided grinding assembly 8 to accurately fit the inner and outer walls.

[0039] The long line wheel assembly 204 includes a wheel frame 2041 welded and fixed inside the F-shaped upright plate 203, and a plurality of rollers 2042 rotatably mounted at equal intervals along the length direction at the top of the wheel frame 2041. The length extension direction of the wheel frame 2041 is parallel to the conveying direction of the belt conveyor 1. When the long line wheel assembly 204 is pushed to the outer wall side of the frame, the rollers 2042 on the wheel frame 2041 all contact the outer wall of the frame, so that after the frame is aligned, the belt conveyor 1 can still convey the frame in a straight line at this position.

[0040] Example 3, based on Example 2, by Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 and Figure 14 As shown, the lifting assembly 5 consists of a U-shaped frame 501 and a screw lifting module 502. The U-shaped frame 501 is fixed on the front and rear outer walls of the roller frame 3. The screw lifting module 502 is installed on one side inside the U-shaped frame 501. The drive end of the screw lifting module 502 is fixedly connected to one end of the support beam 6. The input end of the screw lifting module 502 is electrically connected to the output end of the control panel 11. The screw lifting module 502 drives the support beam 6, the screw bidirectional traction module 7, the disc-type double-sided grinding assembly 8, the key shaft adjustable transmission structure 9, and the double-output shaft reduction motor 10 to slide along the vertical direction of the U-shaped frame 501 to control the height position of the disc-type double-sided grinding assembly 8 until the preset grinding starting height close to the inner and outer walls of the frame is reached.

[0041] The dual-sided grinding assembly 8 includes a hanger 801 slidably mounted on one end of the surface of the support beam 6 via guide rails and sliding sleeves, a main hollow shaft frame 802 and a secondary hollow shaft frame 803 respectively fixedly mounted on the left and right inner walls of the hanger 801, and several disc grinding structures 804 equally spaced inside the main hollow shaft frame 802 and the secondary hollow shaft frame 803. A bevel gear reversing drive 805 is installed on the outer walls of the main hollow shaft frame 802 and the secondary hollow shaft frame 803, which are far apart from each other. The bevel gear reversing drive 805 is used to transmit rotational power to one of the disc grinding structures 804. A belt drive structure 806 is installed between the input shafts of the two bevel gear reversing drive 805.

[0042] When the two-way traction module 7 brings the two connected disc-type double-sided grinding assemblies 8 closer together, and the disc grinding structures 804 on the main hollow shaft frame 802 contact the outer wall of the frame, the dual-output shaft reduction motor 10 and the key shaft adjustable transmission structure 9 synchronously transmit power to the two connected disc-type double-sided grinding assemblies 8. At this time, each disc grinding structure 804 in the main hollow shaft frame 802 works synchronously, using the disc grinding structures 804 to grind the outer wall surface of the frame. After the outer wall surface is ground, the two-way traction module 7 drives the two connected disc-type double-sided grinding assemblies 8 to move away from each other. When the disc grinding structure 804 on the secondary hollow shaft bracket 803 is in contact with the inner wall of the frame, the dual output shaft reduction motor 10 and the key shaft adjustable transmission structure 9 continue to transmit power to the bevel gear reversing transmission device 805. The bevel gear reversing transmission device 805 on the side of the secondary hollow shaft bracket 803 obtains rotational power through the pulley transmission structure 806. That is, each disc grinding structure 804 on the secondary hollow shaft bracket 803 will grind the inner wall surface of the frame. In this way, the four surfaces of the inner and outer walls of the frame are selected for grinding. While ensuring consistent quality, the efficiency is far greater than that of manual labor.

[0043] The disc grinding structure 804 consists of a short gear shaft 8041 and a grinding disc 8042. The short gear shaft 8041 is rotatably mounted inside the main hollow shaft frame 802 via ball bearings. One end of the short gear shaft 8041 extends to the outside of the main hollow shaft frame 802. The grinding disc 8042 is detachably mounted to one end of the short gear shaft 8041. The short gear shafts 8041 along the length of the main hollow shaft frame 802 mesh with each other. The bevel gear reversing drive 805 consists of... The shaft housing 8051, the double-ended bevel gear shaft 8052, and the driven bevel gear 8053 are composed of a shaft housing 8051, a double-ended bevel gear shaft 8052, and a driven bevel gear 8053. The shaft housing 8051 is fixed on the outer wall of the main hollow shaft frame 802 away from the secondary hollow shaft frame 803. The double-ended bevel gear shaft 8052 is vertically rotatably mounted inside the shaft housing 8051 by ball bearings. The driven bevel gear 8053 is fixed at the end of one of the short gear shafts 8041. The driven bevel gear 8053 meshes with the lower end of the double-ended bevel gear shaft 8052.

[0044] The pulley drive structure 806 is installed on the upper end of the double-ended bevel gear shaft 8052. The double-ended bevel gear shaft 8052 in the shaft housing 8051 receives rotational power from the key shaft adjustable transmission structure 9 and the double-output shaft reduction motor 10. The double-ended bevel gear shaft 8052 drives the short gear shaft 8041 and the grinding disc 8042 to rotate through the driven bevel gear 8053. At this time, all the short gear shafts 8041 in the length direction of the main hollow shaft frame 802 rotate due to meshing to ensure the uniformity and quality of grinding. During this process, the operator can manually control the control panel 11 to control the belt conveyor 1 to work. The belt conveyor 1 moves the frame forward or backward to change the position of the grinding disc 8042 on the frame wall.

[0045] The adjustable key shaft transmission structure 9 includes a support plate 901 fixed between the top ends of the main hollow shaft bracket 802 and the auxiliary hollow shaft bracket 803, and a hollow grooved shaft 902 rotatably mounted on the upper surface of the support plate 901 via a bearing seat. A flat key shaft 903 is slidably mounted inside the hollow grooved shaft 902. A drive bevel gear 904 is fixed to the far ends of both the hollow grooved shaft 902 and the flat key shaft 903. The drive bevel gear 904 meshes with the upper end of the double-ended bevel gear shaft 8052. A dual-output shaft reduction motor 10 is mounted on the top end of one of the support plates 901. The output shaft of the dual-output shaft reduction motor 10 is connected to the hollow... The grooved shaft 902 is fixedly connected. The support plate 901, the main hollow shaft frame 802 and the auxiliary hollow shaft frame 803 are all made of stainless steel. When the dual-output shaft geared motor 10 drives the two double-sided grinding assemblies 8 on the left and right sides through the key shaft adjustable transmission structure 9, the dual-output shaft geared motor 10 drives the hollow grooved shaft 902 and the flat key shaft 903 to rotate. The far ends of the hollow grooved shaft 902 and the flat key shaft 903 transmit rotational power to the double-end bevel gear shaft 8052 through the active bevel gear 904, thereby synchronously and smoothly driving the double-sided grinding assemblies 8 on both sides.

[0046] The hollow grooved shaft 902 and the flat key shaft 903 can reliably transmit large torque from the dual-output shaft geared motor 10 and have a certain adjustment margin so that after the distance between the two connected disc double-sided grinding assemblies 8 is adjusted by the lead screw bidirectional traction module 7, the two connected disc double-sided grinding assemblies 8 can still obtain power connection through the key shaft adjustable transmission structure 9.

[0047] In this embodiment, the trailer frame to be ground, firstly, is smoothly placed onto the belt conveyor 1 by a hoisting device or conveyed from the previous process. After the frame is in place, the belt conveyor 1 and the roller conveyor line 4 work together to smoothly deliver the frame to the dual-sided grinding assembly 8. During the conveying process, the double-sided pneumatic alignment machine 2 starts to operate, applying a balanced clamping force from both sides of the frame simultaneously. This effectively corrects any slight misalignment that may occur during the conveying process, ensuring that its central axis is precisely aligned with the central axis of the conveyor line, laying the foundation for subsequent precise grinding. When a grinding area between two adjacent crossbeams on the frame moves and stops at the dual-sided grinding assembly 8, the grinding process continues. When the processing station is directly below the frame 8, the belt conveyor 1 stops operating. The operator starts the lifting assembly 5 via the control panel 11. The lifting assembly 5 drives the support beam 6, the lead screw bidirectional traction module 7, and the double-sided grinding assembly 8 to move downwards until the double-sided grinding assembly 8 passes through the long beam of the frame and reaches the preset starting working height close to the inner and outer walls of the frame. At this point, the double-sided grinding assembly 8 corresponds to one outer wall and one inner wall of the frame. The lead screw bidirectional traction module 7 drives the two double-sided grinding assemblies 8 located on the left and right sides of the frame to move towards each other, making minor adjustments according to the actual width of the frame. Here, we take the two double-sided grinding assemblies 8 moving further apart as an example. The grinding sections of the dual-sided grinding assembly 8 are aligned with and in contact with the left outer wall and left inner wall of the frame, respectively. After the positions are locked, the lead screw bidirectional traction module 7 stops operating, and the dual-output shaft reduction motor 10 is activated via the control panel 11. The dual-output shaft reduction motor 10 transmits rotational power to the dual-sided grinding assemblies 8 on both sides through the key shaft adjustable transmission structure 9. The grinding sections of the dual-sided grinding assembly 8 rotate at high speed and adhere to the inner wall surface of the frame with constant pressure, performing efficient and uniform grinding and deburring operations. After the grinding of the left and right inner walls of the frame in this section is completed, the operator uses the control panel 11 to turn off the dual-output shaft reduction motor 10 and activate the lead screw bidirectional traction module 7. The lead screw bidirectional traction module 7... When the two dual-sided grinding assemblies 8 move closer to each other, the outer grinding portion of the dual-sided grinding assembly 8 will contact the outer wall of the frame and perform the aforementioned grinding operation. After the left and right inner and outer walls of the frame in this grinding section are finished, the dual-sided grinding assembly 8 is retracted and raised to its reset position under the control of the lead screw bidirectional traction module 7 and the lifting assembly 5. The belt conveyor 1 is restarted to advance the next grinding section of the frame to the grinding station where the two dual-sided grinding assemblies 8 are located, repeating the previous positioning, lowering, and left and right inner and outer wall grinding process. This cycle is repeated to form an efficient stepping grinding rhythm until all the inner and outer walls of the entire frame from beginning to end are finished.

[0048] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0049] 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 grinding apparatus for vehicle frame processing, comprising a belt conveyor (1) for driving the vehicle frame to move, a double-track pneumatic centering machine (2) installed at the bottom end of the frame of the belt conveyor (1), and a roller frame (3) installed at the outlet end of the belt conveyor (1), wherein a roller conveyor line (4) for receiving the vehicle frame from the belt conveyor (1) is installed inside the roller frame (3), characterized in that: A lifting assembly (5) is installed on one side of the top of the roller frame (3), and a support beam (6) extending along the width direction of the roller frame (3) is installed on the drive end of the lifting assembly (5). On both sides of the bottom end of the support beam (6), a double-sided grinding assembly (8) is slidably installed along its own length direction. The double-sided grinding assembly (8) is used to grind the inner wall or outer wall of the frame on one side. A two-way traction module (7) for driving the two double-sided grinding assemblies (8) to slide towards each other is installed on one side of the outer wall of the support beam (6). The double-sided grinding assembly (8) includes a guide rail and a sliding sleeve that are slidably installed on the support beam (6). The hanger (801) at one end of the surface, the main hollow shaft frame (802) and the auxiliary hollow shaft frame (803) are fixedly installed on the left and right inner walls of the hanger (801), and a number of disc-type grinding structures (804) are installed at equal intervals inside the main hollow shaft frame (802) and the auxiliary hollow shaft frame (803). The outer walls of the main hollow shaft frame (802) and the auxiliary hollow shaft frame (803) are equipped with bevel gear reversing transmission devices (805). The bevel gear reversing transmission devices (805) are used to transmit rotational power to one of the disc-type grinding structures (804). A belt drive structure (806) is installed between the input shafts of the two bevel gear reversing transmission devices (805). Below the support beam (6) is a key shaft adjustable transmission structure (9) for keeping the two dual-sided grinding assemblies (8) connected by power. One of the dual-sided grinding assemblies (8) is equipped with a dual-output shaft geared motor (10) that inputs rotational power to the key shaft adjustable transmission structure (9). A control panel (11) is installed on one side of the outer wall of the roller frame (3). The output end of the control panel (11) is electrically connected to the input end of the dual-sided pneumatic centering machine (2), the lifting assembly (5), the lead screw bidirectional traction module (7), and the dual-output shaft geared motor (10).

2. The grinding equipment for vehicle frame processing according to claim 1, characterized in that: The double-sided pneumatic centering machine (2) includes a double-layer steel frame (201) fixed to the bottom of the belt conveyor (1) frame, U-shaped sliding plates (202) slidably installed at the left and right positions inside the double-layer steel frame (201), and F-shaped vertical plates (203) integrally formed on the far-away top edges of the two U-shaped sliding plates (202). Long line wheel sets (204) are installed on the opposite outer walls of the two F-shaped vertical plates (203). 01) A central rotating arm (205) is rotatably installed at the center of the bottom. Both ends of the central rotating arm (205) are hinged with pull arms (206). One end of the pull arm (206) is hinged to the top of the U-shaped slide plate (202). A cylinder (207) for driving the central rotating arm (205) to rotate is hinged to one side of the bottom of the double-layer steel structure frame (201). The top of the piston rod of the cylinder (207) is hinged to one side of the bottom of the central rotating arm (205).

3. The grinding equipment for vehicle frame processing according to claim 2, characterized in that: The long-line wheel assembly (204) includes a wheel frame (2041) welded and fixed inside the F-shaped upright plate (203) and a plurality of rollers (2042) that are rotatably installed at equal intervals along the length direction at the top of the wheel frame (2041). The length extension direction of the wheel frame (2041) is parallel to the conveying direction of the belt conveyor (1).

4. The grinding equipment for vehicle frame processing according to claim 1, characterized in that: The lifting assembly (5) consists of a U-shaped frame (501) and a screw lifting module (502). The U-shaped frame (501) is fixed on the front and rear outer walls of the roller frame (3). The screw lifting module (502) is installed on one side inside the U-shaped frame (501). The drive end of the screw lifting module (502) is fixedly connected to one end of the support beam (6). The input end of the screw lifting module (502) is electrically connected to the output end of the control panel (11).

5. The grinding equipment for vehicle frame processing according to claim 1, characterized in that: The disc grinding structure (804) consists of a short gear shaft (8041) and a grinding disc (8042). The short gear shaft (8041) is rotatably mounted inside the main hollow shaft frame (802) via ball bearings. One end of the short gear shaft (8041) extends to the outside of the main hollow shaft frame (802). The grinding disc (8042) is detachably mounted on one end of the short gear shaft (8041). The short gear shafts (8041) in the length direction inside the main hollow shaft frame (802) mesh with each other.

6. The grinding equipment for vehicle frame processing according to claim 5, characterized in that: The bevel gear reversing transmission (805) consists of a housing (8051), a double-ended bevel gear shaft (8052), and a driven bevel gear (8053). The housing (8051) is fixed on the outer wall of the main hollow shaft frame (802) away from the secondary hollow shaft frame (803). The double-ended bevel gear shaft (8052) is vertically rotatably mounted inside the housing (8051) via ball bearings. The driven bevel gear (8053) is fixed at the end of one of the short gear shafts (8041). The driven bevel gear (8053) meshes with the lower end of the double-ended bevel gear shaft (8052).

7. A grinding device for vehicle frame processing according to claim 6, characterized in that: The pulley drive structure (806) is installed on the upper end of the double-ended bevel gear shaft (8052).

8. A grinding device for vehicle frame processing according to claim 6, characterized in that: The adjustable key shaft transmission structure (9) includes a support plate (901) fixed between the top ends of the main hollow shaft frame (802) and the secondary hollow shaft frame (803), and a hollow grooved shaft (902) rotatably mounted on the upper surface of the support plate (901) via a bearing seat. A flat key shaft (903) is slidably mounted inside the hollow grooved shaft (902). Both the far ends of the hollow grooved shaft (902) and the flat key shaft (903) are fixed with a drive bevel gear (904). The upper ends of the drive bevel gear (904) and the double-end bevel gear shaft (8052) mesh. The double-output shaft reduction motor (10) is mounted on the top end of one of the support plates (901), and the output shaft of the double-output shaft reduction motor (10) is fixedly connected to the hollow grooved shaft (902).

9. A grinding device for vehicle frame processing according to claim 8, characterized in that: The pallet (901), the main hollow shaft frame (802), and the auxiliary hollow shaft frame (803) are all made of stainless steel.

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