A frame welding assembly workbench

Abstract

The application provides a vehicle frame welding assembly workbench, which comprises a third clamping group, a first clamping group, a second clamping group, a distance adjusting part and a main frame. One end of the main frame is provided with a sliding rail. The first clamping group is arranged at the end of the main frame away from the sliding rail and comprises a plurality of clamps. The second clamping group is arranged at the middle section of the main frame and comprises a plurality of clamps. The distance adjusting part comprises a sliding installation platform and a distance adjusting cylinder. The sliding installation platform is slidingly arranged on the sliding rail of the main frame. The distance adjusting cylinder is fixed to the main frame, and the piston rod of the distance adjusting cylinder is connected with the sliding installation platform. The third clamping group is arranged on the sliding installation platform and comprises a plurality of clamps. The vehicle frame welding assembly workbench provided by the application has the advantage that it can be suitable for welding and fixing vehicle frames of different lengths.

Description

A chassis welding and assembly workbench Technical Field

[0001] This invention relates to the field of automobile manufacturing, and more particularly to a chassis welding and assembly workbench. Background Technology

[0002] As an important component of a car, the chassis needs to be welded together during the manufacturing process. The first body (section A), the longitudinal beams (section B), and the second body (section C) of the chassis are welded together to form the chassis. To facilitate the welding work, an assembly workbench is usually used to fix the various parts of the chassis for welding.

[0003] However, due to the inconsistent frame lengths of different vehicle models, and the fixed position of the clamping device on the traditional assembly workbench, it is not suitable for different vehicle models with different lengths, resulting in poor adaptability of the traditional assembly workbench. Summary of the Invention

[0004] The purpose of this invention is to provide a vehicle frame welding and assembly workbench to solve the technical problem that traditional assembly workbench can only be used for welding and fixing specific models of vehicle frames, resulting in poor adaptability.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: to provide a vehicle frame welding assembly workbench, the vehicle frame welding assembly workbench comprising:

[0006] The main frame is fixed to the ground at its bottom by several support parts, and a slide rail is provided at one end of the main frame;

[0007] The first clamping group is disposed on the main frame at one end away from the slide rail. The first clamping group includes a plurality of clamps and is used to clamp and fix the first body of the frame.

[0008] The second clamping group is located in the middle section of the main frame. The second clamping group includes several clamps and is used to clamp and fix the longitudinal beam part of the frame.

[0009] The distance adjustment unit includes a sliding mounting platform and a distance adjustment cylinder. The sliding mounting platform is slidably mounted on the slide rail of the main frame, and the distance adjustment cylinder is fixed to the main frame, with the piston rod of the distance adjustment cylinder connected to the sliding mounting platform.

[0010] The third clamping group is disposed on the sliding mounting platform and includes several clamps. The third clamping group is used to clamp and fix the second body of the vehicle frame.

[0011] The clamps in the first clamping group, the second clamping group, and the third clamping group are located at the edge of the main frame, and the clamps are arranged in a vertical direction.

[0012] In one embodiment, the clamp includes:

[0013] Mounting bracket, which is disposed on the main unit frame;

[0014] A clamping cylinder, which is hinged to the mounting bracket;

[0015] An L-shaped connecting rod, one end of which is connected to the piston rod of the clamping cylinder via a hinge, and the other end of which is hinged to the mounting bracket;

[0016] A straight connecting rod, one end of which is hinged to the inflection point of the L-shaped connecting rod;

[0017] A clamping plate, one side of which is hinged to the straight connecting rod, the bottom of which is hinged to the mounting bracket, and the other side of which is provided with a mounting groove;

[0018] A clamping block is installed in the mounting groove of the clamping plate.

[0019] In one embodiment, a positioning part is further included, the positioning part including a positioning rod and a positioning post disposed on the top of the positioning rod, the positioning post cooperating with a positioning hole on the vehicle frame.

[0020] In one embodiment, the clamp includes:

[0021] Mounting bracket, which is mounted on the main unit frame;

[0022] A clamping cylinder, which is hinged to the mounting bracket;

[0023] The P-type connecting rod includes a straight rod section and a cylindrical section. One end of the straight rod section is connected to the side of the cylindrical section, and the other end of the straight rod section is hinged to the piston rod of the clamping cylinder. The cylindrical section is hinged to the mounting bracket, and the hinge point of the cylindrical section is eccentrically set.

[0024] A clamping plate is slidably disposed on the mounting frame, one side of the clamping plate abuts against the cylindrical section, and the other side of the clamping plate is provided with a mounting groove;

[0025] A clamping block is installed in the mounting groove of the clamping plate.

[0026] In one embodiment, the clamp further includes a reset elastic element, one end of which is connected to the mounting bracket, and the other end of which is connected to the clamping plate.

[0027] In one embodiment, an automatic deformation correction unit is further included. The automatic deformation correction unit is disposed on the mounting bracket. The automatic deformation correction unit includes a mating hole, a resistance sleeve, a metal slider, a correction elastic element, and a detection controller. The mating hole is disposed on the mounting bracket. The resistance sleeve is fixed in the mating hole. The metal slider is slidably mated in the resistance sleeve, and one end of the metal slider abuts against the L-shaped connecting rod. The other end of the metal slider is connected to the inner wall of the mating hole through the correction elastic element. The detection controller is electrically connected to the metal slider and one end of the resistance sleeve. The detection controller controls the clamping cylinder to change the clamping force according to the change in the measured resistance value.

[0028] In one embodiment, a control platform is further included. The control platform is disposed on the main frame and is electrically connected to the first clamping group, the second clamping group, the distance adjustment unit, and the third clamping group. The control platform controls the operation of the first clamping group, the second clamping group, the distance adjustment unit, and the third clamping group.

[0029] In one embodiment, the clamps are symmetrically arranged on both sides of the main frame.

[0030] The above-described technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:

[0031] The vehicle frame welding assembly workbench provided in this embodiment of the invention uses a slide rail on the main frame and a distance adjustment unit on the slide rail. A first clamping group is provided at the end of the main frame away from the slide rail to clamp and fix the first body of the vehicle frame; a second clamping group is provided in the middle section of the main frame to clamp and fix the longitudinal beam portion of the vehicle frame; and a third clamping group is provided on the distance adjustment unit to clamp and fix the second body of the vehicle frame. The clamps within each clamping group fix the vehicle frame for welding operations. When it is necessary to clamp and fix vehicle frames of different lengths for welding, the distance adjustment unit is used to adjust the distance between the third and second clamping groups to adapt to different vehicle lengths, thus achieving welding and fixing of vehicle frames applicable to different vehicle lengths. Furthermore, since the clamps in the first, second, and third clamping groups are located at the edge of the main frame and are arranged vertically, space is saved compared to arranging the clamps horizontally, allowing more space in the middle of the vehicle frame welding assembly workbench to accommodate the crossbeams of the vehicle frame. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 is a perspective view of the vehicle frame welding assembly workbench provided in an embodiment of the present invention;

[0034] Figure 2 is a top view of the vehicle frame welding assembly workbench provided in an embodiment of the present invention;

[0035] Figures 3 and 4 are schematic diagrams of the structure of a clamp provided in an embodiment of the present invention;

[0036] Figure 5 is a schematic diagram of the structure of a clamp provided in another embodiment of the present invention;

[0037] Figure 6 is a structural schematic diagram of the automatic deformation correction unit provided in an embodiment of the present invention.

[0038] The labels for the various figures are as follows:

[0039] 1. Main frame; 2. First clamping group; 3. Second clamping group; 4. Distance adjustment unit; 5. Third clamping group; 6. Automatic deformation correction unit; 7. Control platform; 11. Support unit; 21. Fixture; 61. Mating hole; 62. Resistance sliding sleeve; 63. Metal slider; 64. Correction elastic element; 65. Detection controller; 211. Mounting bracket; 212. Clamping cylinder; 213. L-shaped connecting rod; 214. Straight connecting rod; 215. Clamping plate; 216. Clamping block; 217. P-shaped connecting rod; 218. Reset elastic element. Detailed Implementation

[0040] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0041] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0043] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0044] Please refer to Figures 1 and 2. This application embodiment provides a vehicle frame welding assembly workbench, including a third clamping group 5, a first clamping group 2, a second clamping group 3, a distance adjustment unit 4, and a main frame 1. The bottom of the main frame 1 is fixed to the ground by several support parts 11, and a slide rail is provided at one end of the main frame 1. The first clamping group 2 is located on the main frame 1 at the end away from the slide rail, and includes several clamps 21 (the clamps 21 are symmetrically arranged on both sides of the main frame 1). The first clamping group 2 is used to clamp and fix the first body of the vehicle frame. The second clamping group 3 is located in the middle section of the main frame 1, and includes several clamps 21. The second clamping group 3 is used to clamp and fix the longitudinal beam portion of the vehicle frame. The distance adjustment unit 4 includes a sliding mounting platform and a distance adjustment cylinder. The sliding mounting platform is slidably mounted on the slide rail of the main frame 1. The distance adjustment cylinder is fixed to the main frame, and the piston rod of the distance adjustment cylinder is connected to the sliding mounting platform. (When the worktable needs to be adjusted according to the length of the frame, the sliding mounting platform can slide on the main frame 1 in conjunction with the third clamping group 5 by controlling the telescopic movement of the distance adjustment cylinder, thereby adjusting the distance between the third clamping group 5 and the second clamping group 3 to suit frames of different lengths.) The third clamping group 5 is mounted on the sliding mounting platform and includes several clamps 21. The third clamping group 5 is used to clamp and fix the second body of the frame. The clamps 21 in the first clamping group 2, the second clamping group 3, and the third clamping group 5 are located at the edge of the main frame 1 and are arranged vertically.

[0045] The vehicle frame welding assembly workbench provided in this embodiment uses a slide rail on the main frame 1 and a distance adjustment unit 4 on the slide rail. A first clamping group 2 is provided at the end of the main frame 1 away from the slide rail to clamp and fix the first body of the vehicle frame. A second clamping group 3 is provided in the middle section of the main frame 1 to clamp and fix the longitudinal beam portion of the vehicle frame. A third clamping group 5 is provided on the distance adjustment unit 4 to clamp and fix the second body of the vehicle frame. The clamps 21 in each clamping group are used to fix the vehicle frame for welding. When it is necessary to clamp and fix vehicle frames of different lengths for welding, the distance adjustment unit 4 is used to adjust the distance between the third clamping group 5 and the second clamping group 3 to adapt to vehicle frames of different lengths, thereby achieving welding and fixing of vehicle frames applicable to different vehicle lengths. Furthermore, since the clamps 21 in the first clamping group 2, the second clamping group 3, and the third clamping group 5 are located at the edge of the main frame 1 and the clamps 21 are arranged in the vertical direction, space can be saved compared to arranging the clamps 21 in the horizontal direction. This allows for more space in the middle of the frame welding assembly workbench to accommodate the crossbeam of the frame (the position of the crossbeam varies for different frame models; by reserving more middle space, the applicability of the frame welding assembly workbench can be further improved).

[0046] As shown in Figures 3-4, in one embodiment, the clamp 21 includes a mounting frame 211, a clamping block 216, an L-shaped connecting rod 213, a straight connecting rod 214, a clamping plate 215, and a clamping cylinder 212. The mounting frame 211 is mounted on the main frame 1. The clamping cylinder 212 is hinged to the mounting frame 211. One end of the L-shaped connecting rod 213 is hinged to the piston rod of the clamping cylinder 212, and the other end of the L-shaped connecting rod 213 is hinged to the mounting frame 211. One end of the straight connecting rod 214 is hinged to the inflection point of the L-shaped connecting rod 213. One side of the clamping plate 215 is hinged to the straight connecting rod 214, and the bottom of the clamping plate 215 is hinged to the mounting frame 211. The other side of the clamping plate 215 has a mounting groove. The clamping block 216 is installed in the mounting groove of the clamping plate 215.

[0047] When the frame needs to be clamped, the piston rod of the clamping cylinder 212 extends, thereby driving the L-shaped connecting rod 213 to rotate upward about its hinge point with the mounting bracket 211. This causes the straight connecting rod 214 to drive the clamping plate 215 to rotate upward about its hinge point with the mounting bracket 211. Consequently, the clamping plate 215 and the clamping block 216 mounted on it move toward the position of the frame, thus clamping the frame. When the frame needs to be released, simply retract the piston rod of the clamping cylinder 212.

[0048] In this embodiment, the vertical arrangement of the clamping cylinder 212 reduces space occupancy compared to a horizontal arrangement, thereby lowering the risk of conflict between the clamp 21 and the frame crossbeam. Furthermore, by incorporating components such as the L-shaped connecting rod 213, the straight connecting rod 214, and the clamping block 216, the vertical movement of the piston in the clamping cylinder 212 is converted into a horizontal clamping force. The lever principle is used to amplify the clamping force provided by the clamping cylinder 212, allowing the clamp 21 to exert a greater clamping force on the frame. In addition, by detachably mounting the clamping block 216 in the mounting slot of the clamping plate 215, when different frame models need to be clamped and fixed, simply remove the clamping block 216 and replace it with a suitable one.

[0049] Optionally, the clamping surface of the clamping block 216 can be configured to conform to the shape of the side of the frame, thereby maximizing the contact area between the clamping block 216 and the frame. This improves the stability of the clamp 21 in holding the frame while reducing the pressure on the frame due to clamping force, thus reducing the probability of the frame deforming due to clamping force. Furthermore, a buffer layer can be provided on the clamping surface of the clamping block 216. The buffer layer is made of a material with a lower hardness than the frame (the buffer layer can be made of a relatively soft material such as wood or copper). This buffer layer can then act as a cushioning layer to protect the frame when the clamp 21 clamps it.

[0050] As shown in Figure 6, in one embodiment, an automatic deformation correction unit 6 is also included. The automatic deformation correction unit is disposed on the mounting bracket 211. The automatic deformation correction unit includes a mating hole 61, a resistance sliding sleeve 62, a metal slider 63, a correction elastic element 64, and a detection controller 65. The mating hole 61 is disposed on the mounting bracket 211. The resistance sliding sleeve 62 is fixed in the mating hole 61. The metal slider 63 is slidably mated in the resistance sliding sleeve 62, and one end of the metal slider 63 abuts against the L-shaped connecting rod 213. The other end of the metal slider 63 is connected to the inner wall of the mating hole 61 through the correction elastic element 64. The detection controller 65 is electrically connected to the metal slider 63 and one end of the resistance sliding sleeve 62. The detection controller 65 controls the clamping cylinder 212 to change the clamping force according to the change of the measured resistance value.

[0051] Because the frame is prone to deformation due to thermal stress during the welding process, resulting in deformation after welding, this embodiment provides an automatic deformation correction unit 6 on the workbench to automatically apply pressure to correct the deformation of the frame during the welding process.

[0052] When the clamp 21 clamps the frame, the L-shaped connecting rod 213 pushes the metal slider 63 to a certain position. At this time, the detection controller 65 measures the resistance between the metal slider 63 and the end of the resistor sleeve 62 as the initial value, as shown in Figure 4-5. A clamp 21 consists of a left half and a right half. Both the left and right halves of the clamp 21 are equipped with automatic deformation correction parts 6. When the frame deforms due to thermal stress during welding (assuming a rightward bending deformation), the clamping blocks 216 on both the left and right halves will move a small distance in the direction of deformation (assuming a rightward movement). At the same time, the metal slider 63 in the automatic deformation correction unit 6 on the left half will also move a distance in the direction of deformation (i.e., a rightward movement), causing a change in the resistance between the metal slider 63 and the end of the resistor sleeve 62. The detection controller 65 detects the change in resistance and, based on the change in resistance (when the detection controller 65 on the left half detects a decrease in resistance, the detection controller 65 controls the clamping cylinder 212 on the right half to increase the clamping force, thereby subjecting the frame to a leftward corrective force to correct the deformation of the frame), controls the clamping cylinder 212 on the other side to change the clamping force to correct the deformation of the frame.

[0053] In addition, when the welding work is completed, the corrective elastic element 64 can provide elastic force to the metal slider 63 to cooperate with the clamp 21 to release the welded frame and keep the clamp 21 in an open state so that the frame to be welded later can be placed on the clamp 21 for clamping.

[0054] In one embodiment, a positioning part is further included, comprising a positioning rod and a positioning pin disposed on the top of the positioning rod, the positioning pin engaging with positioning holes on the frame. The frame is placed on the worktable, and the positioning part is used to position the various components of the frame to ensure welding accuracy.

[0055] As shown in Figure 5, in one embodiment, the clamp 21 includes a clamping block 216, a clamping cylinder 212, a P-type connecting rod 217, a clamping plate 215, and a mounting frame 211. The mounting frame 211 is mounted on the main frame 1. The clamping cylinder 212 is hinged to the mounting frame 211. The P-type connecting rod 217 includes a straight rod section and a cylindrical section. One end of the straight rod section is connected to the side of the cylindrical section, and the other end of the straight rod section is hinged to the piston rod of the clamping cylinder 212. The cylindrical section is hinged to the mounting frame 211, and the hinge point of the cylindrical section is eccentrically positioned. The clamping plate 215 is slidably mounted on the mounting frame 211. One side of the clamping plate 215 abuts against the cylindrical section, and the other side of the clamping plate 215 is provided with a mounting groove. The clamping block 216 is installed in the mounting groove of the clamping plate 215.

[0056] By using the clamping cylinder 212 to drive the P-type connecting rod 217, the P-type connecting rod 217 rotates around the hinge point between the cylindrical section and the mounting bracket 211, thereby significantly increasing the clamping force of the clamping plate 215. In one embodiment, the clamp 21 further includes a reset elastic element 218, one end of which is connected to the mounting bracket 211, and the other end of which is connected to the clamping plate 215. The reset elastic element 218 allows the clamping plate 215 and the clamping block 216 to automatically release and move away from the frame under the action of the reset elastic element 218 when the clamping cylinder 212 retracts, facilitating frame replacement. The clamp 21 of this embodiment has a simple structure and can convert the vertical extension force given by the cylinder piston rod into a horizontal clamping force, while also significantly increasing the clamping force of the clamp 21, making the frame more securely clamped.

[0057] In one embodiment, the system further includes a control platform 7, which is mounted on the main frame 1. The control platform 7 is electrically connected to the first clamping group 2, the second clamping group 3, the distance adjustment unit 4, and the third clamping group 5. The control platform 7 controls the operation of the first clamping group 2, the second clamping group 3, the distance adjustment unit 4, and the third clamping group 5.

[0058] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A chassis welding and assembly workbench, characterized in that, The vehicle frame welding and assembly workbench includes: a main frame, the bottom of which is fixed to the ground by several support parts, and a slide rail at one end of the main frame; a first clamping group, located on the main frame away from the slide rail, comprising several clamps, used to clamp and fix the first body of the vehicle frame; a second clamping group, located in the middle section of the main frame, comprising several clamps, used to clamp and fix the longitudinal beam portion of the vehicle frame; and a distance adjustment unit, comprising a sliding mounting platform and a distance adjustment mechanism. The distance adjustment cylinder is fixed to the main frame, and its piston rod is connected to the sliding mounting platform. A third clamping group is disposed on the sliding mounting platform and includes several clamps for clamping and fixing the second body of the frame. The clamps in the first, second, and third clamping groups are located at the edge of the main frame and are arranged vertically. Each clamp includes a mounting bracket disposed on the sliding mounting platform. The system includes: a main frame; a clamping cylinder hinged to the mounting bracket; an L-shaped connecting rod, one end of which is hinged to the piston rod of the clamping cylinder, and the other end of which is hinged to the mounting bracket; a straight connecting rod, one end of which is hinged to the inflection point of the L-shaped connecting rod; a clamping plate, one side of which is hinged to the straight connecting rod, and the bottom of which is hinged to the mounting bracket, with a mounting groove on the other side; a clamping block installed in the mounting groove of the clamping plate; and an automatic deformation correction unit disposed on the main frame. On the mounting frame, the automatic deformation correction unit includes a mating hole, a resistance sleeve, a metal slider, a correction elastic element, and a detection controller. The mating hole is located on the mounting frame, the resistance sleeve is fixed inside the mating hole, the metal slider is slidably fitted inside the resistance sleeve, and one end of the metal slider abuts against the L-shaped connecting rod. The other end of the metal slider is connected to the inner wall of the mating hole through the correction elastic element. The detection controller is electrically connected to the metal slider and one end of the resistance sleeve. The detection controller controls the clamping cylinder to change the clamping force according to the change in the measured resistance value.

2. The vehicle frame welding assembly workbench according to claim 1, characterized in that: It also includes a positioning part, which includes a positioning rod and a positioning post disposed on the top of the positioning rod, the positioning post cooperating with a positioning hole on the vehicle frame.

3. The vehicle frame welding assembly workbench according to claim 1, characterized in that, The fixture includes: a mounting frame mounted on the main frame; a clamping cylinder hinged to the mounting frame; a P-type connecting rod comprising a straight rod section and a cylindrical section, one end of the straight rod section being connected to the side of the cylindrical section, the other end of the straight rod section being hinged to the piston rod of the clamping cylinder, the cylindrical section being hinged to the mounting frame, and the hinge point of the cylindrical section being eccentrically positioned; a clamping plate slidably mounted on the mounting frame, one side of the clamping plate abutting against the cylindrical section, and the other side of the clamping plate having a mounting groove; and a clamping block installed within the mounting groove of the clamping plate.

4. A vehicle frame welding assembly workbench according to claim 3, characterized in that: The clamp also includes a reset elastic element, one end of which is connected to the mounting bracket, and the other end of which is connected to the clamping plate.

5. A chassis welding assembly workbench according to claim 1, characterized in that: It also includes a control platform, which is mounted on the main frame and electrically connected to the first clamping group, the second clamping group, the distance adjustment unit, and the third clamping group. The control platform controls the operation of the first clamping group, the second clamping group, the distance adjustment unit, and the third clamping group.

6. A vehicle frame welding assembly workbench according to claim 1, characterized in that: The clamps are symmetrically arranged on both sides of the main frame.

Images