Chassis frame welding apparatus with turning-over function, and four-axle heavy truck chassis

Abstract

A chassis frame welding apparatus with a turning-over function comprises a welding device (1), a support frame (2), and two rotating supporting apparatuses, wherein the support frame is located between the two rotating supporting apparatuses; the welding device is disposed adjacent to the support frame; and each rotating supporting apparatus comprises a lifting device (4), a rotating device (5) and a clamping device (6), the rotating device comprising a rotating shaft (51), a one-way bearing (52), a first gear (53), and a first toothed plate (10). The chassis frame welding apparatus is provided with the one-way bearing and the first gear, which fits with the first toothed plate, and during the process in which the lifting device is used to lift by means of the rotating device and the clamping device a workpiece to be separated from the support frame, the first gear interacts with the first toothed plate, and the rotating shaft is then driven by means of the one-way bearing to rotate by 180 degrees; thus, the spacing between the workpiece and the support frame is adjusted by means of the lifting device, and the turning over of the workpiece under driving is completed, without providing a plurality of driving systems, thereby simplifying a turning-over supporting apparatus.

Description

A chassis frame welding equipment with a tilting function and a four-axle heavy truck chassis Technical Field

[0001] This invention relates to the field of welding technology, and in particular to a chassis frame welding equipment with a flipping function and a four-axle heavy truck chassis. Background Technology

[0002] A heavy-duty truck chassis generally refers to the chassis portion of a heavy-duty truck. It is the basic structure of the entire vehicle, bearing important components such as the engine, cab, cargo box, and wheels. Among them, the frame is the main load-bearing structure of the chassis, used to support and fix the various components of the vehicle. During the welding production process, the frame needs to be rotated and adjusted in the welding processing position.

[0003] In related technologies, a welding apparatus is provided, comprising a movable welding torch and two adjusting devices, with the movable welding torch positioned between the two adjusting devices. The adjusting devices include a lifting device, a rotating device, and an mounting device. The rotating device is installed at the output end of the lifting device, and the mounting device is installed at the output end of the rotating device. The two ends of the vehicle frame to be welded are correspondingly mounted on the two mounting devices. When the vehicle frame needs to be flipped to adjust the welding position, the lifting device, through the rotating device and the mounting device, lifts the vehicle frame to a preset height to provide the necessary space for rotation. The rotating device then drives the mounting device to rotate, thereby flipping the vehicle frame. In the aforementioned welding apparatus, the driving devices for the rotating device and the lifting device are independent. How to optimize the setting of the driving devices and achieve integrated design of the driving devices requires further research.

[0004] Therefore, it is necessary to provide a new chassis frame welding equipment with a flipping function to solve the above-mentioned technical problems. Summary of the Invention

[0005] This invention provides a chassis frame welding device with a flipping function, which solves the technical problem that the drive devices of the rotating device and the lifting device in the welding device of related technologies need to be integrated and optimized.

[0006] To solve the above-mentioned technical problems, the present invention provides a chassis frame welding equipment with a flipping function, comprising: a welding device, a support frame, and two rotating support devices; the support frame is located between the two rotating support devices, and the welding device is arranged adjacent to the support frame;

[0007] The rotating support device includes a lifting device, a rotating device, a clamping device, and a first toothed plate. The rotating device includes a rotating shaft, a one-way bearing, and a first gear. The first gear is mounted on the rotating shaft via the one-way bearing, and the first toothed plate is suspended above the first gear.

[0008] One end of the rotating shaft is rotatably mounted on the output end of the lifting device, and the clamping device is mounted on the other end of the rotating shaft;

[0009] The lifting device is used to drive the rotating device and the clamping device to rise and fall. When it rises to a preset height, the first gear meshes with the first toothed plate, the first toothed plate drives the first gear to rotate, and the first gear drives the rotating shaft to rotate through the one-way bearing.

[0010] Preferably, the welding device includes a slide rail, a drive trolley, a robotic arm, and a welding torch. The drive trolley is slidably mounted on the slide rail, the robotic arm is mounted on the drive trolley, and the welding torch is mounted on the output end of the robotic arm.

[0011] Preferably, the clamping device includes a U-shaped frame, a drive shaft, a drive device, and two clamping blocks;

[0012] The drive shaft is mounted on the U-shaped frame, and the two clamping blocks are disposed at both ends of the drive shaft and slidably connected to the U-shaped frame. The drive device is used to drive the drive shaft to rotate. The U-shaped frame is mounted on the rotating shaft. Both ends of the drive shaft are provided with threaded surfaces, and the thread directions of the two threaded surfaces are opposite. The two clamping blocks can be threadedly connected to one of the corresponding threaded surfaces.

[0013] Preferably, the driving device is a second gear, which is installed at one end of the driving shaft. The rotary support device also includes two clamping driving mechanisms, each of which includes a second toothed plate, with the two second toothed plates suspended on both sides of the U-shaped frame.

[0014] Preferably, the rotary support device further includes two mounting arms, and a support is provided between the two mounting arms;

[0015] The lifting device includes a lifting cylinder, an upper frame, a sliding plate, a drive sleeve, and a drive arm;

[0016] The upper lifting frame is installed at the output end of the lifting cylinder. The sliding plate is slidably installed between the two mounting arms and supported on the support platform. The driving sleeve is installed on the sliding plate. One end of the driving arm is installed on the upper lifting frame, and the other end of the driving arm is inserted into the interior of the driving sleeve. An opening is provided in the middle of the upper lifting frame. Two oblique sliding holes are provided on the upper lifting frame in an inverted V-shape, and both oblique sliding holes are connected to the opening.

[0017] The clamping device also includes two drive shafts, one end of each drive shaft is connected to the two clamping blocks respectively, and the other end of one drive shaft passes through the U-shaped frame through a strip hole and extends into the interior of a corresponding oblique sliding hole.

[0018] The rotating shaft is rotatably mounted on the sliding plate.

[0019] Preferably, there are two drive sleeves and two drive arms, with the two drive sleeves installed at intervals on the sliding plate, and the drive arms and drive sleeves being arranged in a one-to-one correspondence.

[0020] Preferably, the rotating support device further includes a limiting rod, the bottom end of which is mounted on the support platform, and the top end of which passes through the rotating shaft;

[0021] When the lifting device raises the rotating device and the clamping device, causing the first gear to mesh with the first toothed plate, the rotating shaft separates from the limiting rod.

[0022] The present invention also provides a four-axle heavy truck chassis, comprising: a frame, a first suspension system and a second suspension system, wherein the first suspension system and the second suspension system are spaced apart and mounted on the frame;

[0023] When welding the vehicle frame, the chassis frame welding equipment with the flipping function is used.

[0024] Preferably, the first suspension system is a hydropneumatic spring suspension structure, which includes an accumulator, a longitudinal thrust rod bracket assembly, two steering tie rod assemblies, two longitudinal force rod assemblies, two spring cylinder bracket assemblies, two steering shafts, and two hydropneumatic spring cylinders; the steering tie rod assembly, the longitudinal force rod assembly, the spring cylinder bracket assembly, the steering shaft, and the hydropneumatic spring cylinder are arranged in a one-to-one correspondence;

[0025] Two spring suspension cylinder bracket assemblies are mounted on the vehicle frame, the steering shaft is mounted at the lower end of the spring suspension cylinder bracket assembly, and first wheel hubs are mounted at both ends of the steering shaft. The hydropneumatic spring suspension cylinder is installed between the steering shaft and the spring suspension cylinder bracket assembly.

[0026] The longitudinal thrust rod bracket assembly is bolted to the web surface of the vehicle frame and is located between the two steering shafts;

[0027] The accumulator is fixedly connected to the longitudinal thrust rod support assembly, and the accumulator is connected to the oil-gas spring suspension cylinder through an oil pipe;

[0028] The longitudinal force bar assembly is used to rotatably connect the longitudinal thrust rod support assembly and the steering shaft, and the steering tie rod assembly is used to rotatably connect the longitudinal thrust rod support assembly and the steering shaft.

[0029] Preferably, the balance suspension includes a main shaft, a main shaft support, a leaf spring, a spring support, two mounting shafts, and two second wheel hubs;

[0030] The main shaft is mounted on the vehicle frame via the main shaft bracket, the spring bracket is mounted on the main shaft via the bearing seat, the leaf spring is mounted on the spring bracket, the two mounting shafts are respectively mounted on the two ends of the leaf spring, and the two second wheel hubs are respectively mounted on the two mounting shafts.

[0031] Compared with related technologies, the chassis frame welding equipment with a flipping function provided by the present invention has the following beneficial effects:

[0032] This invention provides a chassis frame welding device with a flipping function. By setting a one-way bearing and a first gear engaging with a first toothed plate, during the process of lifting the workpiece and separating it from the support frame using a lifting device, a rotating device, and a clamping device, the first gear and the first toothed plate interact, driving the rotating shaft to rotate 180 degrees through the one-way bearing. When the lifting device lowers the workpiece onto the support frame through the rotating device and the clamping device, the one-way bearing does not drive the rotating shaft to rotate. This allows the lifting device to adjust the distance between the workpiece and the support frame and to complete the workpiece flipping. The lifting device and the rotating device achieve integrated optimization of the drive equipment, simplifying the rotating support equipment. Attached Figure Description

[0033] Figure 1 is a schematic diagram of a preferred embodiment of the chassis frame welding equipment with a flipping function provided by the present invention.

[0034] Figure 2 is a schematic diagram of the rotating support device shown in Figure 1;

[0035] Figure 3 is a partial structural schematic diagram of the rotary support device shown in Figure 2;

[0036] Figure 4 is a schematic diagram of the clamping device shown in Figure 2;

[0037] Figure 5 is a schematic diagram of the working principle of the rotary support device provided by the present invention, wherein (5a) is a schematic diagram of the end of the workpiece being located between the two clamping blocks; (5b) is a schematic diagram of the two clamping blocks being closed and sleeved on the workpiece; (5c) is a schematic diagram of the two clamping blocks clamping the workpiece; (5d) is a schematic diagram of the rotary device driving the workpiece to rotate through the clamping device; (5e) is a schematic diagram of the driving shaft being located at the top of the inclined sliding hole; (5f) is a schematic diagram of the driving shaft moving from the top of the inclined sliding hole to the bottom; (5g) is a schematic diagram of the driving shaft moving into the opening; and (5h) is a schematic diagram of the driving shaft rotating with the clamping device.

[0038] Figure 6 is a schematic diagram of the working principle of the clamping device provided by the present invention, wherein (6a) is a schematic diagram of the end of the workpiece located between the two clamping blocks; (6b) is a schematic diagram of the two clamping blocks sleeved on the end of the workpiece; and (6c) is a schematic diagram of the two clamping blocks clamping the workpiece.

[0039] Figure 7 is a schematic diagram of the vehicle frame provided by the present invention being assembled on a chassis frame welding device with a tilting function;

[0040] Figure 8 is a schematic diagram of the four-axle heavy truck chassis provided by the present invention;

[0041] Figure 9 is a top view of the overall structure shown in Figure 8;

[0042] Figure 10 is a structural schematic diagram of the first suspension system shown in Figure 8;

[0043] Figure 11 is a side view of the first suspension system shown in Figure 10;

[0044] Figure 12 shows another application scenario of the second suspension system in the four-axle heavy truck chassis provided by the present invention.

[0045] Numbering on the map:

[0046] 1. Welding device; 11. Slide rail; 12. Drive trolley; 13. Robotic arm; 14. Welding torch; 10. First toothed plate; 101. Connecting rod;

[0047] 2. Support frame; 21. Bearing frame; 22. Positioning shaft;

[0048] 3. Mounting arm; 31. Support;

[0049] 4. Lifting device; 41. Lifting cylinder; 42. Upper lifting frame; 43. Sliding plate; 44. Drive sleeve; 45. Drive arm;

[0050] 421. Slanted sliding hole; 422. Opening;

[0051] 5. Rotating device; 51. Rotating shaft; 52. One-way bearing; 53. First gear;

[0052] 6. Clamping device; 61. U-shaped frame; 62. Drive shaft; 63. Clamping block; 64. Drive shaft; 65. Slide rod; 66. Drive device;

[0053] 611. Slotted hole;

[0054] 7. Clamping drive mechanism; 71. Connecting arm; 72. Second toothed plate;

[0055] 8. Limit rod;

[0056] 91. Chassis; 92. First suspension system; 93. Second suspension system;

[0057] 921. Spring suspension cylinder bracket assembly; 922. Steering shaft; 923. Hydropneumatic spring suspension cylinder; 924. Longitudinal thrust rod bracket assembly; 925. Accumulator; 926. Longitudinal force rod assembly; 927. Steering tie rod assembly; 928. First wheel hub;

[0058] 931. Spindle; 932. Spindle bracket; 933. Leaf spring; 934. Spring bracket; 935. Mounting shaft; 936. Second hub;

[0059] 20. Fixed crossbeam assembly; 30. Lateral thrust rod assembly. Detailed Implementation

[0060] 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 a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0061] This invention provides a chassis frame welding device with a flipping function.

[0062] Please refer to Figures 1 to 3. In one embodiment of the present invention, a chassis frame welding device with a flipping function includes: a welding device 1, a support frame 2, and two rotating support devices; the support frame 2 is located between the two rotating support devices, and the welding device 1 is arranged adjacent to the support frame 2.

[0063] The rotating support device includes a lifting device 4, a rotating device 5, a clamping device 6, and a first toothed plate 10. The rotating device 5 includes a rotating shaft 51, a one-way bearing 52, and a first gear 53. The first gear 53 is mounted on the rotating shaft 51 through the one-way bearing 52, and the first toothed plate 10 is suspended above the first gear 53.

[0064] One end of the rotating shaft 51 is rotatably mounted on the output end of the lifting device 4, and the clamping device 6 is mounted on the other end of the rotating shaft 51;

[0065] The lifting device 4 is used to drive the rotating device 5 and the clamping device 6 to rise and fall. When it rises to a preset height, the first gear 53 meshes with the first toothed plate 10, the first toothed plate 10 drives the first gear 53 to rotate, and the first gear 53 drives the rotating shaft 51 to rotate through the one-way bearing 52.

[0066] Referring to Figures 1 and 7, in this embodiment, the support frame 2 is used to place the workpiece, which is the frame 91 of a heavy truck chassis.

[0067] During welding, the workpiece is placed on the support frame 2, and the two ends of the workpiece are respectively set with the two clamping devices 6;

[0068] When it is necessary to flip the workpiece, the two clamping devices 6 clamp the two ends of the workpiece, and the lifting device 4 drives the workpiece to move upward through the rotating device 5 and the clamping devices 6;

[0069] When the workpiece rises to a preset height, providing enough space for its rotation, the first gear 53 meshes with the first toothed plate 10. When the lifting device 4 is raised again, the first toothed plate 10 drives the first gear 53 to rotate. The first gear 53 drives the rotating shaft 51 to rotate through the one-way bearing 52, thereby flipping the workpiece.

[0070] After the flipping is completed, the lifting device 4 lowers the workpiece onto the support frame 2 via the rotating device 5 and the clamping device 6. During the descent, the first gear 53 interacts with the first toothed plate 10 again. At this time, the first gear 53 cannot drive the rotating shaft 51 to rotate via the one-way bearing 52, so that the flipped workpiece falls onto the support frame 2 and is then welded by the welding device 1.

[0071] By setting up a one-way bearing 52, a first gear 53, and a first toothed plate 10, the lifting device 4, through the rotating device 5 and the clamping device 6, achieves the separation of the workpiece from the support frame 2. During this process, the first gear 53 interacts with the first toothed plate 10, and the one-way bearing 52 drives the rotating shaft 51 to rotate 180 degrees. When the lifting device 4 lowers the workpiece onto the support frame 2 through the rotating device 5 and the clamping device 6, the one-way bearing 52 does not drive the rotating shaft 51 to rotate. This allows the lifting device 4 to adjust the distance between the workpiece and the support frame 2 and to complete the workpiece flipping. The lifting device 4 and the rotating device 5 achieve integrated optimization of the drive equipment to simplify the rotating support equipment.

[0072] It is understandable that, since the workpiece is still in an upward state during the flipping process, when the first gear 53 and the first toothed plate 10 begin to mesh, the height of the workpiece can be less than the distance between the workpiece and the support frame 2 required for the workpiece to flip, so as to ensure that there is a gap between the lowest end of the workpiece and the support frame 2 when the workpiece is flipped 90 degrees.

[0073] During welding, the support frame 2 can support the workpiece, and the clamping device 6 can choose not to clamp the two ends of the workpiece to ensure that the welding device 1 can weld the two ends of the workpiece.

[0074] Please refer to Figure 1 again. The welding device 1 includes a slide rail 11, a drive trolley 12, a robotic arm 13, and a welding torch 14. The drive trolley 12 is slidably mounted on the slide rail 11, the robotic arm 13 is mounted on the drive trolley 12, and the welding torch 14 is mounted on the output end of the robotic arm 13.

[0075] The drive trolley 12 can move along the slide rail 11, and the drive robotic arm 13 can move the welding torch 14 to the corresponding welding position. The robotic arm 13 can then adjust the position and angle of the welding torch 14 to weld the frame 91.

[0076] In one embodiment, the clamping device 6 includes a U-shaped frame 61, two cylinders, and clamping blocks 63. The U-shaped frame 61 is mounted on a rotating shaft 51, the two cylinders are mounted at both ends of the U-shaped frame 61, and the two clamping blocks 63 are respectively mounted at the output ends of the two cylinders. During operation, the two cylinders push the two clamping blocks 63 to clamp the workpiece.

[0077] Referring to Figures 2 and 4, in another embodiment, the clamping device 6 includes a U-shaped frame 61, a drive shaft 62, a drive device 66, and two clamping blocks 63.

[0078] The drive shaft 62 is mounted on the U-shaped frame 61, and the two clamping blocks 63 are disposed at both ends of the drive shaft 62 and are slidably connected to the U-shaped frame 61. The drive device 66 is used to drive the drive shaft 62 to rotate. The U-shaped frame 61 is mounted on the rotating shaft 51. Both ends of the drive shaft 62 are provided with threaded surfaces, and the thread directions of the two threaded surfaces are arranged in opposite directions. The two clamping blocks 63 can be threadedly connected to one of the corresponding threaded surfaces.

[0079] During operation, the drive device 66 drives the drive shaft 62 to rotate counterclockwise, and the two clamping blocks 63 close to clamp the workpiece. When the workpiece is released, the drive device 66 drives the drive shaft 62 to rotate clockwise, and the two clamping blocks 63 separate to release the workpiece.

[0080] In one embodiment, the drive device 66 can be a motor, which is mounted on the U-shaped frame 61, and one end of the drive shaft 62 is connected to the output shaft of the motor.

[0081] Please refer to Figure 2 again. In another embodiment, the driving device 66 can also be a second gear, which is installed at one end of the driving shaft 62. The rotating support device also includes two clamping driving mechanisms 7, each of which includes a second toothed plate 72. The two second toothed plates 72 are suspended on both sides of the U-shaped frame 61.

[0082] When the lifting device 4 is in the lifting state, the rotating device 5 lifts the clamping device 6 to drive the workpiece to lift and separate from the support frame 2 to meet the space required for rotation. During this process, the second gear at one end of the drive shaft 62 meshes with the second toothed plate 72 on the left side as shown in Figure 3, driving the two clamping blocks 63 to close, clamping the workpiece, and driving the workpiece to lift.

[0083] When the lifting device 4 is in a rotating state, the first gear 53 on the rotating shaft 51 interacts with the first toothed plate 10, driving the rotating shaft 51 to rotate and achieve flipping; at this time, the second gear corresponds to another second toothed plate 72. During the process of the lifting device 4 lowering the workpiece, the second gear interacts with the second toothed plate 72, driving the two clamping blocks 63 to separate, releasing the workpiece, and the workpiece is located on the support frame 2 for welding again.

[0084] That is, when the lifting device 4 switches from the lifting state to the rotating state, the lifting driving force is used as the driving force to drive the two clamping blocks 63 to close and clamp.

[0085] The clamping block 63 can be threadedly connected to the threaded surface of the drive shaft 62 via a threaded connector. The threaded connector can be a nut or a threaded hole directly opened on the clamping block 63.

[0086] The two clamping blocks 63 initially overlap with the ends of the workpiece, so that when flipping is required, the workpiece can be lifted accordingly. Furthermore, the length of the threaded surfaces on both sides of the drive shaft 62 is not less than the length of the overlapping portion of the workpiece after one clamping block 63 clamps the workpiece.

[0087] Please refer to Figures 3 and 4. The rotary support device also includes two mounting arms 3, and a support 31 is provided between the two mounting arms 3.

[0088] The lifting device 4 includes a lifting cylinder 41, an upper lifting frame 42, a sliding plate 43, a drive sleeve 44, and a drive arm 45;

[0089] The upper lifting frame 42 is installed at the output end of the lifting cylinder 41. The sliding plate 43 is slidably installed between the two mounting arms 3 and is supported on the support 31. The driving sleeve 44 is installed on the sliding plate 43. One end of the driving arm 45 is installed on the upper lifting frame 42, and the other end of the driving arm 45 is inserted into the interior of the driving sleeve 44. An opening 422 is provided in the middle of the upper lifting frame 42. Two oblique sliding holes 421 are provided on the upper lifting frame 42 in an inverted V-shape, and both oblique sliding holes 421 are connected to the opening 422.

[0090] Please refer to Figures 4 and 1. The clamping device 6 also includes two drive shafts 64. One end of each drive shaft 64 is connected to one of the two clamping blocks 63 respectively. The other end of one drive shaft 64 passes through the U-shaped frame 61 through the strip hole 611 and extends into the interior of the corresponding oblique sliding hole 421.

[0091] The rotating shaft 51 is rotatably mounted on the sliding plate 43.

[0092] It is understood that the length of the threaded surfaces at both ends of the drive shaft 62 can be adjusted. When the length of the threaded surfaces at both ends of the drive shaft 62 is set to be longer, the clamping block 63 can maintain a continuous threaded connection with the threaded surfaces.

[0093] However, if this method is to achieve the clamping effect of the clamping block 63 through the second gear and the second toothed plate 72, on the one hand, the length setting requirement of the second toothed plate 72 is too high, and on the other hand, it is inconvenient to maintain a certain lateral distance between the clamping block 63 and the frame 91 when the clamping block 63 is not clamping the frame 91.

[0094] To avoid the above-mentioned disadvantages, as shown in Figure 2, in this embodiment, the length of the threaded surfaces at both ends of the drive shaft 62 is set to be relatively short, and the threads are preferably set to be raised, so that the diameter of the threaded hole of the threaded connector on the clamping block 63 can be slightly larger than the diameter of the drive shaft 62, and can slide along the drive shaft 62 before contacting the threaded surface.

[0095] Please refer to (5a) and (5e) in Figure 5 and (6a) in Figure 6. In the initial state, the two clamping blocks 63 are separated from the frame 91 and have a certain lateral distance from the frame 91, so as not to affect the welding device 1 to perform welding work on both ends of the frame 91. The two drive shafts 64 are located at the top of the two oblique sliding holes 421 respectively.

[0096] Please refer to (5b) and (5f) in Figure 5 and (6b) in Figure 6. The lifting cylinder 41 lifts the upper frame 42. During the lifting process of the upper frame 42, the two drive shafts 64 slide from the top of the inclined sliding hole 421 to the bottom of the inclined sliding hole 421. The two drive shafts 64 drive the two clamping blocks 63 to close and be sleeved on both sides of the end of the frame 91. At this time, the two drive shafts 64 are located at the bottom of the two inclined sliding holes 421 and abut against the bottom of the inner wall of the inclined sliding hole 421. The two drive shafts 64 drive the two clamping blocks 63 to abut against the threaded surfaces at both ends of the drive shaft 62. The drive arm 45 slides up to abut against the top of the inner wall of the drive sleeve 44.

[0097] Please refer to (5c) and (5g) in Figure 5 and (6c) in Figure 6. The lifting cylinder 41 continues to lift the upper frame 42. The upper frame 42 lifts the sliding plate 43 through the drive arm 45 and the drive sleeve 44. The sliding plate 43 drives the rotating shaft 51 to rise, thereby driving the entire clamping device 6 to move upward. The first gear 53 on the drive shaft 62 interacts with the first toothed plate 10 on the left side, driving the drive shaft 62 to rotate. Since the threaded connectors on the two clamping blocks 63 abut against the threaded surface, and the clamping blocks 63 are slidably connected to the U-shaped frame 61, the clamping blocks 63 are axially limited, thereby achieving threaded connection between the threaded connectors on the clamping blocks 63 and the threaded surface on the drive shaft 62. At this time, the two clamping blocks 63 continue to close and move to clamp the end of the frame 91. At this time, the two drive shafts 64 move into the opening 422 through the corresponding oblique sliding hole 421.

[0098] Please refer to (5d) and (5h) in Figure 5. The lifting cylinder 41 continues to lift the upper frame 42, and the upper frame 42 drives the rotating shaft 51 to continue to lift. The first gear 53 on the rotating shaft 51 interacts with the first gear plate 10. The first gear plate 10 drives the first gear 53 to rotate. The first gear 53 drives the rotating shaft 51 to rotate 180 degrees through the one-way bearing 52.

[0099] After the flipping is completed, the lifting cylinder 41 lowers the lifting frame 42, in which the sliding plate 43, the rotating device 5, and the clamping device 6 drive the frame 91 to follow the downward movement. When the first gear 53 and the first toothed plate 10 act again, the first gear 53 will not drive the rotating shaft 51 to rotate through the one-way bearing 52. When the descent continues, the second gear acts with the second toothed plate 72 on the right side, thereby driving the drive shaft 62 to rotate. The threaded connectors on the two clamping blocks 63 act with the threaded surfaces on the drive shaft 62, so that the two clamping blocks 63 separate along the drive shaft 62, releasing the frame 91, and the frame 91 is located on the support frame 2.

[0100] Please refer again to (5b) and (5f) in Figure 5. Drive shaft 64 moves again into the corresponding oblique sliding hole 421. At this time, the threaded connector on the clamping block 63 is separated from the threaded surface on the drive shaft 62. The threaded protrusion on the threaded surface and the threaded groove on the threaded connector do not have an interlocking relationship. At this time, the sliding plate 43 descends to the support 31, the lifting cylinder 41 continues to descend, and drives the upper lifting frame 42 to continue to descend. The two drive shafts 64 move from the bottom end of the two oblique sliding holes 421 to the top end of the oblique sliding holes 421, thereby driving the two clamping blocks 63 to separate and be a certain lateral distance from the frame 91, which facilitates the subsequent welding of the end of the frame 91 by the welding device 1.

[0101] By setting up the lifting frame 42, sliding plate 43 and drive shaft 64, the two U-shaped frames 61 can be a certain lateral distance from the frame 91 when the frame 91 does not need to be flipped, as shown in Figure 7, so as not to affect the welding device 1 to weld the end of the frame 91.

[0102] The lifting cylinder 41 can be a pneumatic cylinder, a hydraulic cylinder, or an electric push cylinder.

[0103] Please refer to Figure 3 again. In this embodiment, the first toothed plate 10 is mounted on the support 31 via a connecting rod 101.

[0104] In other embodiments, the first toothed plate 10 may also be connected to the working ground by a support column.

[0105] In this embodiment, one of the second toothed plates 72 is mounted on a corresponding mounting arm 3 via a connecting arm 71;

[0106] In other embodiments, the two second toothed plates 72 may be mounted on the working ground via support arms.

[0107] Please refer to Figure 3 again. There are two drive sleeves 44 and two drive arms 45. The two drive sleeves 44 are installed on the sliding plate 43 at intervals. The drive arms 45 are arranged in a one-to-one correspondence with the drive sleeves 44.

[0108] By setting two drive arms 45 and two drive sleeves 44, the lifting frame 42 can drive the sliding plate 43 to lift more stably.

[0109] Please refer to Figure 2 again. The clamping device 6 also includes a slide rod 65, which is installed inside the U-shaped frame 61. The clamping block 63 is sleeved on the slide rod 65 to form a sliding assembly between the clamping block 63 and the U-shaped frame 61.

[0110] By setting the slide bar 65, the two clamping blocks 63 can be brought together or separated along the slide bar 65, thereby improving the stability of the movement of the clamping blocks 63.

[0111] Please refer to Figure 3 again. The rotating support device also includes a limiting rod 8. The bottom end of the limiting rod 8 is installed on the support 31, and the top end of the limiting rod 8 passes through the rotating shaft 51.

[0112] When the lifting device 4 raises the rotating device 5 and the clamping device 6, causing the first gear 53 to mesh with the first toothed plate 10, the rotating shaft 51 separates from the limiting rod 8.

[0113] By setting the limiting rod 8, when the rotating device 5 is not rotating, the limiting rod 8 can axially limit the rotating shaft 51 during the upward process, so as to prevent the clamping device 6 from deflecting and causing the second gear and the second toothed plate 72 to fail to mesh.

[0114] Please refer to Figure 1 again. The support frame 2 includes a bearing frame 21 and two sets of positioning shafts 22. The two positioning shafts 22 are symmetrically installed on the top of the bearing frame 21.

[0115] By setting two sets of positioning shafts 22, the frame 91 placed on the support frame 21 can be limited on the horizontal side to prevent the frame 91 from moving during the welding process.

[0116] When the frame 91 is placed between the two sets of positioning shafts 22, the two ends of the frame 91 are respectively located in the middle position of the two clamping blocks 63 in the corresponding clamping device 6.

[0117] In this embodiment, the number of positioning axes 22 is two, but it can also be three or other numbers;

[0118] The number of support frames 2 is two, but it can also be set to one, three or other numbers.

[0119] The working principle of the chassis frame welding equipment with a flipping function provided by this invention is as follows:

[0120] In use, the frame 91 to be welded is placed on the support frame 2, with both ends positioned between the two clamping blocks 63 in the corresponding clamping device 6. The welding device 1 welds the components of the frame 91; as shown in Figure 7, the connection between the two main beams and the middle crossbeam in the frame 91.

[0121] When welding is required on the other side, please refer to (5a) and (5e) in Figure 5. In the initial state, the two clamping blocks 63 are separated from the frame 91 and have a certain lateral distance from the frame 91, so as not to affect the welding device 1 to weld the two ends of the frame 91. The two drive shafts 64 are located at the top of the two oblique sliding holes 421 respectively.

[0122] Please refer to (5b) and (5f) in Figure 5. The lifting cylinder 41 lifts the upper frame 42. During the lifting process of the upper frame 42, the two drive shafts 64 slide from the top of the inclined sliding hole 421 to the bottom of the inclined sliding hole 421. The two drive shafts 64 drive the two clamping blocks 63 to move to the opposite side and are respectively sleeved on both sides of the end of the frame 91. At this time, the drive arm 45 slides up to abut against the top of the inner wall of the drive sleeve 44.

[0123] Please refer to (5c) and (5g) in Figure 5. The lifting cylinder 41 continues to lift the upper frame 42. The upper frame 42 lifts the sliding plate 43 through the drive arm 45 and the drive sleeve 44. The sliding plate 43 drives the rotating shaft 51 to rotate, thereby driving the entire clamping device 6 to move upward. The first gear 53 at the end of the drive shaft 62 interacts with the first toothed plate 10 on the left side, driving the drive shaft 62 to rotate. At this time, the two clamping blocks 63 continue to move to the opposite side to clamp the end of the frame 91. At this time, the two drive shafts 64 move into the opening 422 through the corresponding oblique sliding hole 421.

[0124] Please refer to (5d) and (5h) in Figure 5. The lifting cylinder 41 continues to lift the upper frame 42, and the upper frame 42 drives the rotating shaft 51 to continue to lift. The first gear 53 on the rotating shaft 51 interacts with the first gear plate 10. The first gear plate 10 drives the first gear 53 to rotate. The first gear 53 drives the rotating shaft 51 to rotate 180 degrees through the one-way bearing 52.

[0125] After the flipping is completed, the lifting cylinder 41 lowers the upper frame 42, where the sliding plate 43, rotating device 5, and clamping device 6 drive the frame 91 to follow and fall. When the first gear 53 and the first toothed plate 10 act again, the first gear 53 will not drive the rotating shaft 51 to rotate through the one-way bearing 52. When the descent continues, the second gear acts with the second toothed plate 72 on the right side, thereby driving the drive shaft 62 to rotate. The two clamping blocks 63 separate along the drive shaft 62, releasing the frame 91. The frame 91 is located on the support frame 2, and the drive shaft 64 moves to the corresponding oblique sliding hole 421. At this time, the sliding plate 43 falls to the support 31, and the lifting cylinder 41 continues to fall, driving the upper frame 42 to continue to fall. The two drive shafts 64 move from the bottom end of the two oblique sliding holes 421 to the top end of the oblique sliding holes 421, thereby driving the two clamping blocks 63 to separate and maintain a certain lateral distance from the frame 91, which facilitates the subsequent welding of the ends of the frame 91 by the welding device 1.

[0126] The present invention also provides a four-axle heavy truck chassis.

[0127] Please refer to Figures 8 and 9. The four-axle heavy truck chassis includes: a frame 91, a first suspension system 92 and a second suspension system 93, with the first suspension system 92 and the second suspension system 93 mounted on the frame 91 at intervals.

[0128] When welding the chassis 91, the chassis chassis welding equipment with the flipping function is used.

[0129] The specific structure of the chassis frame welding equipment with the flipping function is as described in the above embodiments. Since the chassis frame welding equipment with the flipping function adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated here.

[0130] Please refer to Figure 10. Specifically, the first suspension system 92 is a hydropneumatic spring suspension structure, which includes an accumulator 925, a longitudinal thrust rod bracket assembly 924, two steering tie rod assemblies 927, two longitudinal force rod assemblies 926, two spring suspension cylinder bracket assemblies 921, two steering shafts 922, and two hydropneumatic spring cylinders 923. The steering tie rod assembly 927, the longitudinal force rod assembly 926, the spring suspension cylinder bracket assembly 921, the steering shaft 922, and the hydropneumatic spring cylinder 923 are arranged in a one-to-one correspondence.

[0131] Two spring suspension cylinder bracket assemblies 921 are mounted on the vehicle frame 91. The steering shaft 922 is mounted on the lower end of the spring suspension cylinder bracket assembly 921. First wheel hubs 928 are mounted on both ends of the steering shaft 922. The hydropneumatic spring suspension cylinder 923 is installed between the steering shaft 922 and the spring suspension cylinder bracket assembly 921.

[0132] The longitudinal thrust rod bracket assembly 924 is bolted to the web surface of the frame 91 and is located between the two steering shafts 922;

[0133] The accumulator 925 is fixedly connected to the longitudinal thrust rod bracket assembly 924, and the accumulator 925 is connected to the oil-gas spring suspension cylinder 923 through an oil pipe;

[0134] The longitudinal force bar assembly 926 is used to rotatably connect the longitudinal thrust rod bracket assembly 924 and the steering shaft 922, and the steering tie rod assembly 927 is used to rotatably connect the longitudinal thrust rod bracket assembly 924 and the steering shaft 922.

[0135] Furthermore, the first suspension system 92 can be a dual-steering through-type oil-gas balance suspension system.

[0136] By adopting a gas spring suspension structure with a short wheelbase, when traversing uneven roads, the pressure inside the gas spring cylinder 923 is synchronized with the low-pressure chamber of the accumulator 925. The high-pressure chamber only starts working when the suspension pressure rises to a certain value. This ensures that the gas spring cylinder 923 has pressure compensation and buffer space in both low-pressure and high-pressure states to absorb impact forces. It also balances the air pressure inside the gas spring cylinders 923 of the two steering shafts 922, reducing the impact between the tires and the road surface, preventing the tires from leaving the ground, maximizing the load-bearing capacity of the front dual axles, and improving the front axle's shock resistance.

[0137] Please refer to Figure 11. The four-axle heavy truck chassis also includes a fixed crossbeam assembly 20 and a transverse thrust rod assembly 30. The fixed crossbeam assembly 20 is installed at the bottom of the frame 91. One end of the transverse thrust rod assembly 30 is rotatably connected to the fixed crossbeam assembly 20, and the other end is connected to a steering shaft 922 and a correspondingly provided spring suspension cylinder bracket assembly 921 through a connecting bracket.

[0138] The fixed crossbeam assembly 20 and the lateral thrust rod assembly 30 are used to limit the left and right attitude of the two steering shafts 922.

[0139] Please refer to Figures 8 and 9. The leaf spring balance suspension structure includes a main shaft 931, a main shaft support 932, a leaf spring 933, a spring support 934, two mounting shafts 935, and two second wheel hubs 936.

[0140] The main shaft 931 is mounted on the frame 91 via the main shaft bracket 932, the spring bracket 934 is mounted on the main shaft 931 via the bearing seat, the leaf spring 933 is mounted on the spring bracket 934, the two mounting shafts 935 are respectively mounted on the two ends of the leaf spring 933, and the two second wheel hubs 936 are respectively mounted on the two mounting shafts 935.

[0141] As an optional embodiment, the second suspension system 93 can be a leaf spring balance suspension structure.

[0142] Please refer to Figure 12. As another optional embodiment, the second suspension system 93 can also be an oil-gas suspension balance system.

[0143] In this embodiment, wheels are mounted on both the first hub 928 and the second hub 936. The two sets of wheels at the front of the chassis are mounted on the first hub 928, and the two sets of wheels at the rear are mounted on the second hub 936.

[0144] The balanced suspension ensures that when driving over uneven road surfaces, the two wheels on the balanced suspension remain on the ground while one wheel is lifted, thus supporting the vehicle.

[0145] Of course, the four-axle heavy truck chassis also includes an engine system, braking system, steering system, transmission system, electrical system, etc., and can use various components from existing technologies, which will not be elaborated on here.

[0146] To facilitate understanding of the technical solution, the following supplementary description is provided regarding the four-axle heavy truck chassis structure provided by this invention:

[0147] The main features of this four-axle heavy truck chassis structure can be:

[0148] The dual front axle system is a dual-steering through-type oil-gas balance suspension configuration, which realizes the relative balance of motion load and synchronous steering function of the dual front axle system. It solves the problem of load concentration in the independent suspension combined with steering dual front axle structure under complex road conditions, and effectively improves the safety and stability of four-axle vehicles.

[0149] The dual front axle load-bearing system can include four sets of pneumatic spring cylinders and two sets of accumulator assemblies. These components are connected on one side by high-pressure oil pipes to achieve pressure balance between the front and rear systems on one side. The pneumatic spring cylinders have low-pressure compensation and high-pressure buffering functions. When passing over undulating roads, the pressure inside the pneumatic spring cylinders is synchronized with the low-pressure chamber of the accumulator. The system pressure is relatively balanced under different stroke states of the pneumatic spring cylinders on one side, thereby achieving static and dynamic load balance of the dual front axles.

[0150] A dual front axle suspension system may include four longitudinal thrust rods, one lateral thrust rod, brackets, and connecting beams to ensure the motion stability of the dual front axle system.

[0151] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A chassis frame welding equipment with a flipping function, characterized in that, The welding device, the support frame and the two rotating support devices are arranged in sequence; the support frame is arranged between the two rotating support devices; the welding device is arranged adjacent to the support frame; The rotating support device comprises a lifting device, a rotating device, a clamping device and a first toothed plate; the rotating device comprises a rotating shaft, a one-way bearing and a first gear; the first gear is mounted on the rotating shaft through the one-way bearing; and the first toothed plate is suspended above the first gear; One end of the rotating shaft is rotatably mounted on the output end of the lifting device; and the clamping device is mounted on the other end of the rotating shaft; The lifting device is used for driving the rotating device and the clamping device to lift; when lifting to a preset height, the first gear is engaged with the first toothed plate; the first toothed plate drives the first gear to rotate; and the first gear drives the rotating shaft to rotate through the one-way bearing; The clamping device comprises a U-shaped frame, a driving shaft, a driving device and two clamping blocks; The driving shaft is mounted on the U-shaped frame; the two clamping blocks are arranged at the two ends of the driving shaft and are in sliding connection with the U-shaped frame; and the driving device is used for driving the driving shaft to rotate; wherein the U-shaped frame is mounted on the rotating shaft; the two ends of the driving shaft are provided with threaded surfaces, and the threaded directions of the two threaded surfaces are oppositely arranged; and the two clamping blocks can be respectively threadedly connected with a corresponding one of the threaded surfaces; The driving device is a second gear; the second gear is mounted on one end of the driving shaft; and the rotating support device further comprises two clamping driving mechanisms; each clamping driving mechanism comprises a second toothed plate; and the two second toothed plates are suspended on the two sides of the U-shaped frame; The rotating support device further comprises two mounting arms; and a support table is arranged between the two mounting arms; The lifting device comprises a lifting cylinder, a lifting frame, a sliding plate, a driving sleeve and a driving arm; The lifting frame is mounted on the output end of the lifting cylinder; the sliding plate is slidingly mounted between the two mounting arms and is supported on the support table; the driving sleeve is mounted on the sliding plate; one end of the driving arm is mounted on the lifting frame; the other end of the driving arm is inserted into the inside of the driving sleeve; an opening is formed in the middle of the lifting frame; two inclined sliding holes are formed in an inverted V shape on the lifting frame and are in communication with the opening; The clamping device further comprises two driving shafts; one end of each of the two driving shafts is connected with a corresponding one of the clamping blocks; and the other end of one of the driving shafts penetrates through the U-shaped frame through a strip-shaped hole and extends into the inside of a corresponding one of the inclined sliding holes; The rotating shaft is rotatably mounted on the sliding plate. The welding device comprises a sliding rail, a driving trolley, a mechanical arm and a welding gun; the driving trolley is slidingly mounted on the sliding rail; the mechanical arm is mounted on the driving trolley; and the welding gun is mounted on the output end of the mechanical arm.

2. The chassis frame welding apparatus with a turnover function according to claim 1, characterized in that, The number of the driving sleeves and the driving arms is two; the two driving sleeves are spaced apart and mounted on the sliding plate; and the driving arms are arranged in one-to-one correspondence with the driving sleeves.

3. The chassis frame welding apparatus with a turnover function according to claim 1, characterized in that, ​ 4. The chassis frame welding apparatus with a turnover function according to claim 1, characterized in that, The rotating support device further comprises a limiting rod, a bottom end of the limiting rod is installed on the support table, and a top end of the limiting rod penetrates through the rotating shaft; When the lifting device lifts the rotating device and the clamping device, the rotating shaft is separated from the limiting rod.

5. The chassis frame welding apparatus with a turnover function according to any one of claims 1 to 4, characterized in that, When welding the frame of a four-axle heavy truck chassis, the chassis frame welding device with a turnover function is used, the four-axle heavy truck chassis comprises the frame, a first suspension system and a second suspension system, and the first suspension system and the second suspension system are installed on the frame at intervals.

6. The chassis frame welding apparatus with a turnover function according to claim 5, characterized in that, The first suspension system is an oil-gas spring suspension structure, the oil-gas spring suspension structure comprises an accumulator, a longitudinal thrust rod support assembly, two steering straight pull rod assemblies, two longitudinal force rod assemblies, two spring suspension cylinder support assemblies, two steering shafts and two oil-gas spring suspension cylinders; the steering straight pull rod assemblies, the longitudinal force rod assemblies, the spring suspension cylinder support assemblies, the steering shafts and the oil-gas spring suspension cylinders are arranged one by one in correspondence; The two spring suspension cylinder support assemblies are installed on the frame, the steering shafts are installed at lower ends of the spring suspension cylinder support assemblies, first hubs are installed at both ends of the steering shafts, and the oil-gas spring suspension cylinders are installed between the steering shafts and the spring suspension cylinder support assemblies; The longitudinal thrust rod support assembly is bolted to the web surface of the frame and located between the two steering shafts; The accumulator is fixedly connected to the longitudinal thrust rod support assembly, and the accumulator communicates with the oil-gas spring suspension cylinders through an oil pipe; The longitudinal force rod assemblies are used to rotationally connect the longitudinal thrust rod support assembly and the steering shafts, and the steering straight pull rod assemblies are used to rotationally connect the longitudinal thrust rod support assembly and the steering shafts.

7. The chassis frame welding apparatus with a turnover function according to claim 5, characterized in that, The second suspension system is a leaf spring balance suspension structure, the leaf spring balance suspension structure comprises a main shaft, a main shaft support, a steel plate spring, a spring support and two mounting shafts and two second hubs; The main shaft is installed on the frame through the main shaft support, the spring support is installed on the main shaft through a bearing seat, the steel plate spring is installed on the spring support, the two mounting shafts are respectively installed at two ends of the steel plate spring in correspondence, and the two second hubs are respectively installed on the two mounting shafts in correspondence.

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