Automobile swing arm welding supporting and positioning device

Abstract

The invention discloses an automobile swing arm welding, supporting and positioning device, and relates to the technical field of automobile swing arm machining. A pair of U-shaped plates is fixedly arranged on the two sides of the top face of a bottom plate, two pairs of supporting seats are fixedly arranged on the front side and the rear side of the top face of the bottom plate, automobile swing arms are placed in the U-shaped plates, and the two ends of the automobile swing arms are placed on the supporting seats in a lap joint mode; a clamping assembly is assembled and mounted on the U-shaped plate; a pair of T-shaped sleeves are fixedly arranged on the bottom plate, rotating inner cylinders are slidably inserted into the T-shaped sleeves, fixing shafts are fixedly inserted into the rotating inner cylinders, an oval transverse plate is fixedly arranged at the top end of each fixing shaft, and downward pressing assemblies are assembled and installed at the two ends of each oval transverse plate. According to the device, the motor drives the trapezoidal clamping blocks to synchronously clamp, and the preliminary fixing efficiency of the swing arm is improved; the electric telescopic cylinder is matched with the assembly to realize secondary and lateral limiting, so that the welding precision is guaranteed; and the rubber head and the tension spring protect the swing arm and are adaptive to swing arms of multiple specifications, so that the universality is improved.

Description

Technical Field

[0001] This invention relates to the field of automotive swing arm processing technology, and in particular to an automotive swing arm welding support and positioning device. Background Technology

[0002] The car control arm is a key load-bearing and force-transmitting component connecting the car body and the wheels. Its structural integrity and assembly precision directly affect the vehicle's handling stability, driving safety, and suspension life. It is often formed by welding multiple metal components. During welding, it is necessary to ensure that the components to be welded are free from displacement and shaking. Otherwise, the weld may be misaligned or deformed, increasing the need for correction and even affecting driving safety.

[0003] Currently, the industry mainstream relies on manual, simple tooling for positioning: operators place the swing arm component to be welded on a standard support platform, manually tighten bolts, add stops for initial positioning, and then adjust the level and position based on experience before welding. This method has significant drawbacks: First, it lacks a precise benchmark and synchronous clamping mechanism, requiring repeated calibration for positioning, resulting in low efficiency and difficulty in adapting to mass production; second, uneven manual force application can easily lead to loose clamping, causing the swing arm to shift during welding and potentially causing quality issues; third, the tooling lacks a universal structure, requiring frequent replacement of support blocks and adjustment of stops when changing swing arms of different specifications, leading to high costs; and fourth, the lack of a protective structure makes it easy to scratch the surface of the swing arm, increasing repair steps. Summary of the Invention

[0004] The purpose of this invention is to solve the problem of unstable fixing during the welding of automotive swing arms in the prior art, and to propose an automotive swing arm welding support and positioning device.

[0005] To address the problems existing in the prior art, the present invention adopts the following technical solution:

[0006] A welding support and positioning device for automotive swing arms includes a base plate. A pair of U-shaped plates are symmetrically fixed on both sides of the top surface of the base plate. Two pairs of support seats are symmetrically fixed on the front and rear sides of the top surface of the base plate. An automotive swing arm is placed inside each U-shaped plate, and both ends of each automotive swing arm rest on a pair of support seats on the same side. Each U-shaped plate is equipped with a clamping assembly for limiting and fixing the automotive swing arm. A pair of through-type T-shaped sleeves are fixed on the base plate between each pair of support seats. A rotating inner cylinder is slidably inserted into each T-shaped sleeve. A fixed shaft is fixedly inserted inside each rotating inner cylinder. An elliptical horizontal plate is fixed to the top of each fixed shaft. A pressing assembly for limiting and fixing the automotive swing arm is equipped at both ends of each elliptical horizontal plate.

[0007] Preferably, the clamping assembly includes trapezoidal clamping blocks, a pair of fixing pins are fixedly inserted into both sides of the U-shaped plate, three pairs of trapezoidal clamping blocks are hinged to both sides of each fixing pin, a pair of staggered fixing lugs are hinged to each fixing pin, and each fixing lug is fixedly connected to the adjacent trapezoidal clamping block; and a single lug and a double lug are fixed to both sides of each trapezoidal clamping block, and adjacent pairs of single lugs and double lugs are movably hinged together by connecting pins.

[0008] Preferably, a pair of slidingly distributed translation plates are symmetrically arranged on the front and rear sides of the U-shaped plate. Each translation plate is symmetrically provided with a pair of oblique pin holes. A limiting pin is slidably inserted into each oblique pin hole. A limiting ear is fixedly provided at the top of each limiting pin. Each limiting ear is fixedly connected to a trapezoidal clamping block on the same side.

[0009] Preferably, a pair of U-shaped rails are symmetrically fixed on both sides of the bottom surface of each of the translation plates, and an I-shaped slide rail is slidably installed in each of the U-shaped rails. The bottom surface of each I-shaped slide rail is fixedly connected to the top surface of the base plate. A rectangular sliding hole is opened on the base plate between each pair of I-shaped slide rails. A fixed slide plate is slidably inserted into the interior of each rectangular sliding hole. The top of each fixed slide plate is fixedly connected to the translation plate on the same side.

[0010] Preferably, a pair of motors with downward-facing output ends are fixedly installed on both sides of the bottom surface of the base plate. Each motor shaft end is fixedly fitted with a drive gear. Each drive gear has a pair of staggered L-shaped racks meshing on both sides. Each L-shaped rack is fixedly connected to the bottom end of the fixed slide plate on the same side.

[0011] Preferably, each of the T-shaped sleeves is provided with a bending pin hole, and a positioning pin is slidably inserted into the interior of each bending pin hole. The inner end of each positioning pin is fixedly connected to the rotating inner cylinder.

[0012] Preferably, the pressing assembly includes a manual bolt and a pressing plate. A pair of threaded holes are provided at both ends of the elliptical horizontal plate. A manual bolt is threadedly inserted into the interior of each threaded hole. A tension spring is sleeved on the upper half of each manual bolt. A pressing plate is fixed at the bottom end of each manual bolt. The bottom surface of each pressing plate is pressed against the end of the car swing arm on the same side.

[0013] Preferably, two pairs of fixing plates are symmetrically fixed on the base plate. Each fixing plate has a fixing sliding hole at its top end. A rectangular sliding rod is slidably inserted into each fixing sliding hole. A rubber head is fixed at the outer end of each rectangular sliding rod. Each rubber head is tightly abutted against the end of the car swing arm on the same side.

[0014] Preferably, a pair of limiting sliding holes are provided on the base plate between each pair of fixed plates. A T-shaped sliding rod is slidably inserted inside each limiting sliding hole. A pair of hinged connecting rods are hinged to both ends of each T-shaped sliding rod. Each pair of hinged connecting rods is movably hinged to the inner end of a rectangular sliding rod on the same side.

[0015] Preferably, an electric telescopic cylinder with its telescopic end facing downward is fixedly installed in the middle of the bottom surface of the base plate. A cross connecting plate is fixedly provided at the end of the telescopic rod of the electric telescopic cylinder. The bottom ends of a pair of fixed shafts are respectively rotatably inserted into the front and rear ends of the cross connecting plate, and the bottom ends of a pair of T-shaped sliding rods are respectively fixedly inserted into the left and right ends of the cross connecting plate.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. In this invention, during welding production, the motor drives the drive gear to rotate, causing the L-shaped rack to move the fixed slide plate and the translation plate. With the guidance of the I-shaped slide rail, the oblique pin hole and the limiting pin shaft allow the trapezoidal clamping block to close synchronously along the fixed pin shaft. The trapezoidal clamping block is adapted to the shape of the swing arm, and multiple sets of synchronous clamping solve the inconvenience of manual operation and improve the initial fixing efficiency and stability of the swing arm during batch welding.

[0018] 2. In this invention, the electric telescopic cylinder drives the cross plate to move down, so that the fixed shaft and the rotating inner cylinder slide along the T-shaped sleeve, the positioning pin shaft and the bending pin hole guide, and the elliptical horizontal plate rotates to the side; the lower pressure plate under the manual bolt presses against the end of the swing arm, and with the help of the tension spring buffer, the swing arm is fixed twice during the precise positioning stage of welding, so as to avoid welding displacement.

[0019] 3. In this invention, the cross plate moves down while simultaneously driving the T-shaped slide bar to slide, and the hinged connecting rod pushes the rectangular slide bar to move along the sliding hole of the fixed plate, with the rubber head pressing against the end of the swing arm; during welding, it not only provides lateral final positioning of the swing arm, but also avoids hard contact that could scratch the surface of the swing arm, ensuring the appearance quality of the swing arm after welding and reducing subsequent grinding processes.

[0020] 4. In this invention, the support base keeps both ends of the swing arm horizontal, the U-shaped plate provides a preliminary limiting frame, and multiple components work together to achieve multi-directional fixation of the swing arm. During actual welding, there is no need to repeatedly adjust the position of the swing arm, shortening the positioning time of a single swing arm, adapting to swing arms of different specifications, and improving the versatility and operational efficiency of the welding production line. Attached Figure Description

[0021] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the overall structure of the present invention (excluding a pair of automotive swing arms);

[0024] Figure 3 This is a schematic diagram of the base plate and a pair of pressing components of the present invention;

[0025] Figure 4 This is a schematic diagram of the base plate and a pair of clamping components of the present invention;

[0026] Figure 5 This is an exploded view of the base plate and a pair of pressing components of the present invention;

[0027] Figure 6 This is an exploded view of the base plate and a pair of clamping components of the present invention;

[0028] Figure 7 This is a schematic diagram of the explosion of several trapezoidal clamping blocks of the present invention;

[0029] In the diagram, the following are the item numbers: 100, base plate; 101, automotive swing arm; 102, T-sleeve; 103, bending pin hole; 104, rotating inner cylinder; 105, positioning pin; 106, fixed shaft; 107, elliptical cross plate; 108, manual bolt; 109, lower pressure plate; 200, electric telescopic cylinder; 201, cross connecting plate; 202, T-slide rod; 203, hinged connecting rod; 204, rectangular slide rod; 205, rubber head; 206, support base; 2 07. Fixed plate; 300. U-shaped plate; 301. I-shaped slide rail; 302. Translation plate; 303. Angled pin hole; 304. U-shaped clamping rail; 305. Motor; 306. Drive gear; 307. Fixed slide plate; 308. L-shaped rack; 400. Trapezoidal clamping block; 401. Fixed pin; 402. Fixed lug; 403. Single lug; 404. Double lug; 405. Connecting pin; 406. Limiting lug; 407. Limiting pin. Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0031] Example 1: This example provides a welding support and positioning device for automotive swing arms. See below. Figures 1 to 7Specifically, the base plate 100 is the fundamental load-bearing component of the entire device, providing a fixed installation reference for the parts. A pair of U-shaped plates 300 are symmetrically fixed on both sides of the top surface of the base plate 100. The U-shaped plates 300 provide a preliminary lateral limiting frame for the car swing arms 101 and also serve as the mounting carrier for the clamping components. Two pairs of support seats 206 are symmetrically fixed on the front and rear sides of the top surface of the base plate 100. The support seats 206 support the two ends of the car swing arms 101, keeping them horizontal and providing stable support for subsequent positioning and fixing. Each U-shaped plate 300 contains a car swing arm 101, and both ends of each car swing arm 101 rest on a pair of support seats 206 on the same side. Each support is equipped with a clamping assembly for limiting and fixing the car swing arm 101; a pair of through-type sleeves 102 are fixed on the base plate 100 between each pair of support seats 206. The T-type sleeves 102 provide guidance for the up-and-down sliding and rotation of the rotating inner cylinder 104. The rotating inner cylinder 104 is slidably inserted into each T-type sleeve 102. The rotating inner cylinder 104 can drive the fixed shaft 106 to slide and rotate along the T-type sleeve 102, thereby realizing the adjustment of the position and angle of the elliptical cross plate 107. The fixed shaft 106 is fixedly inserted inside each rotating inner cylinder 104. The top end of each fixed shaft 106 is fixedly equipped with an elliptical cross plate 107. Both ends of each elliptical cross plate 107 are equipped with a pressing assembly for limiting and fixing the car swing arm 101.

[0032] The working principle of this embodiment is as follows: First, a car swing arm 101 to be positioned is placed in a pair of U-shaped plates 300 symmetrically fixed on both sides of the top surface of the base plate 100. At the same time, it is ensured that the two ends of each car swing arm 101 are stably placed on a pair of corresponding support seats 206 symmetrically fixed on the front and rear sides of the top surface of the base plate 100, thus completing the initial placement of the car swing arm 101.

[0033] Subsequently, the clamping assembly is operated to initially clamp and fix the car swing arm 101 placed in the U-shaped plate 300, thereby limiting the car swing arm 101 in the horizontal direction. Finally, rotating the inner cylinder 104 can drive the fixed shaft 106 fixed inside to adjust its position and angle synchronously, thereby moving the elliptical horizontal plate 107 fixed at the top of the fixed shaft 106 to the corresponding position to be pressed on the car swing arm 101. Then, the pressing assembly is operated to limit and fix the car swing arm 101 again, thus achieving precise positioning and stable fixation of the car swing arm 101 before welding.

[0034] Example 2: Based on Example 1, this example solves the problems of inconvenient operation and insufficient clamping stability and accuracy of the clamping components in Example 1 by using a trapezoidal clamping block 400, a motor 305, and an L-shaped rack 308, achieving a more efficient and stable initial clamping and fixation of the car swing arm 101. It also includes:

[0035] In the specific implementation process, such as Figure 6 and Figure 7 As shown, the clamping assembly includes trapezoidal clamping blocks 400. A pair of fixing pins 401 are fixedly inserted into both sides of the U-shaped plate 300. Three pairs of trapezoidal clamping blocks 400 are hinged to both sides of each fixing pin 401. The trapezoidal clamping blocks 400 directly contact the car swing arm 101 through a synchronous closing action, realizing the initial clamping and fixing of the car swing arm 101. Its trapezoidal structure can adapt to the shape of the car swing arm 101, improving the clamping stability. A pair of staggered fixing lugs 402 are hinged to each fixing pin 401. Each fixing lug 402 is connected to the adjacent trapezoidal clamping block. 400 is fixedly connected, and the fixed pin 401 serves as the hinge shaft between the trapezoidal clamping block 400 and the fixed ear seat 402, providing a fulcrum for the opening and closing rotation of the trapezoidal clamping block 400; and each trapezoidal clamping block 400 is fixedly provided with a single ear seat 403 and a double ear seat 404 on both sides respectively. The single ear seats 403 and double ear seats 404 located in adjacent pairs are movably hinged together by the connecting pin 405. The single ear seats 403 and double ear seats 404 are hinged together by the connecting pin 405 to connect adjacent trapezoidal clamping blocks 400 in series, so as to realize the synchronous movement of multiple pairs of trapezoidal clamping blocks 400 and ensure the consistency of clamping action;

[0036] A pair of sliding translation plates 302 are symmetrically arranged on the front and rear sides of the U-shaped plate 300. Each translation plate 302 is symmetrically provided with a pair of oblique pin holes 303. A limiting pin 407 is slidably inserted into each oblique pin hole 303. A limiting ear 406 is fixed at the top of each limiting pin 407. Each limiting ear 406 is fixedly connected to the trapezoidal clamping block 400 on the same side. The limiting pin 407 slides along the oblique pin hole 303, converting the horizontal movement of the translation plate 302 into the opening and closing rotation of the trapezoidal clamping block 400.

[0037] Each translation plate 302 has a pair of U-shaped rails 304 symmetrically fixed on both sides of its bottom surface. Each U-shaped rail 304 has an I-shaped slide rail 301 slidably installed inside it. The bottom surface of each I-shaped slide rail 301 is fixedly connected to the top surface of the base plate 100. The I-shaped slide rail 301 and the U-shaped rails 304 slide together to provide guidance for the horizontal movement of the translation plate 302 and ensure that the translation plate 302 moves towards the U-shaped plate 300 in a fixed direction. A rectangular sliding hole is opened on the base plate 100 between each pair of I-shaped slide rails 301. A fixed slide plate 307 is slidably inserted into the interior of each rectangular sliding hole. The top of each fixed slide plate 307 is fixedly connected to the translation plate 302 on the same side. The fixed slide plate 307 is used to transmit the translation force of the L-shaped rack 308 to the translation plate 302.

[0038] A pair of motors 305 with their output ends facing downwards are fixedly installed on both sides of the bottom surface of the base plate 100. Each motor 305 has a drive gear 306 fixedly sleeved on the end of its motor shaft. Each drive gear 306 has a pair of staggered L-shaped racks 308 meshing on both sides. Each L-shaped rack 308 is fixedly connected to the bottom end of the fixed slide plate 307 on the same side. The motor 305 drives the drive gear 306 to rotate, which drives the L-shaped racks 308 to move alternately, thereby driving the translation plate 302 to move through the fixed slide plate 307, thus realizing the power transmission.

[0039] The working principle of this embodiment is as follows: When it is necessary to initially clamp the car swing arm 101 placed in the U-shaped plate 300, the motor 305 is started, and the motor shaft of the motor 305 drives the drive gear 306 to rotate synchronously; the drive gear 306 meshes and drives the L-shaped racks 308 on both sides to move alternately, and synchronously drives the fixed slide plate 307 to slide in the rectangular sliding hole opened on the base plate 100.

[0040] The bottom sides of the translation plate 302 are slidably engaged with the I-shaped slide rail 301 fixed on the top surface of the base plate 100 via the U-shaped rail 304. Therefore, the translation plate 302 moves synchronously toward the U-shaped plate 300 along with the fixed slide plate 307. The limiting pin 407, which is slidably inserted into the oblique pin hole 303 symmetrically opened on the translation plate 302, moves along the oblique pin hole 303 as the translation plate 302 moves. The limiting ear seat 406 fixed at the top of the limiting pin 407 is fixedly connected to the trapezoidal clamping block 400 on the same side, thereby driving the trapezoidal clamping block 400 to move.

[0041] Meanwhile, on the fixed pins 401 fixedly inserted on both sides of the U-shaped plate 300, the hinged fixed lugs 402 are fixedly connected to the adjacent trapezoidal clamping blocks 400, and the adjacent trapezoidal clamping blocks 400 are hinged to the connecting pins 405 through single lugs 403 and double lugs 404. The trapezoidal clamping blocks 400 close synchronously along the fixed pins 401, and finally achieve the initial clamping and fixing of the car swing arm 101 inside the U-shaped plate 300.

[0042] Example 3: Based on Example 2, Example 3, through a pressing assembly including a positioning pin 105, a manual bolt 108, and a lower pressure plate 109, as well as an electric telescopic cylinder 200, a cross connecting plate 201, a T-shaped slide bar 202, a rectangular slide bar 204, and a rubber head 205, solves the problem of Example 2 only being able to initially clamp and fix the vehicle, lacking precise secondary and final limiting fixation of the end of the car swing arm 101, thus achieving a more comprehensive and stable positioning of the car swing arm 101. It also includes:

[0043] In the specific implementation process, such as Figure 3 and Figure 5As shown, each T-shaped sleeve 102 is provided with a bending pin hole 103, and a positioning pin 105 is slidably inserted inside each bending pin hole 103. The inner end of each positioning pin 105 is fixedly connected to the rotating inner cylinder 104. When the rotating inner cylinder 104 slides, the positioning pin 105 moves along the bending pin hole 103 to provide a limiting guide for the rotating inner cylinder 104, so that it drives the fixed shaft 106 and the elliptical horizontal plate 107 to complete the downward and rotational actions.

[0044] The pressing assembly includes a manual bolt 108 and a pressing plate 109. The two ends of the elliptical horizontal plate 107 are provided with a pair of threaded holes. Each threaded hole is threaded with a manual bolt 108. The upper half of each manual bolt 108 is fitted with a tension spring to buffer the downward pressure and avoid damage to the car swing arm 101. The bottom end of each manual bolt 108 is fixed with a pressing plate 109. The bottom surface of each pressing plate 109 is pressed against the end of the car swing arm 101 on the same side. By manual adjustment or by moving down with the elliptical horizontal plate 107, the pressing plate 109 is pressed against the end of the car swing arm 101 to achieve secondary limiting and fixing.

[0045] Two pairs of fixing plates 207 are symmetrically fixed on the base plate 100. Each fixing plate 207 has a fixing sliding hole at its top. A rectangular sliding rod 204 is slidably inserted into each fixing sliding hole. A rubber head 205 is fixed at the outer end of each rectangular sliding rod 204. The rubber head 205 directly contacts the end of the car swing arm 101. While achieving final limiting and fixing, it avoids hard contact damage to the surface of the car swing arm 101. Each rubber head 205 is tightly fitted to the end of the car swing arm 101 on the same side. The fixing plate 207 provides a sliding installation channel for the rectangular sliding rod 204, restricts the movement direction of the rectangular sliding rod 204, and ensures that it stably drives the rubber head 205 to laterally limit the car swing arm 101.

[0046] A pair of limiting sliding holes are provided on the base plate 100 between each pair of fixed plates 207. A T-shaped sliding rod 202 is slidably inserted inside each limiting sliding hole. A pair of hinged connecting rods 203 are hinged to both ends of each T-shaped sliding rod 202. Each pair of hinged connecting rods 203 is movably hinged to the inner end of a rectangular sliding rod 204 on the same side, so as to convert the downward movement of the T-shaped sliding rod 202 into the horizontal outward sliding of the rectangular sliding rod 204, thereby realizing the conversion of the power direction.

[0047] An electric telescopic cylinder 200 with its telescopic end facing downward is fixedly installed in the middle of the bottom surface of the base plate 100. A cross connecting plate 201 is fixedly installed at the end of the telescopic rod of the electric telescopic cylinder 200. The bottom ends of a pair of fixed shafts 106 are respectively rotatably inserted into the front and rear ends of the cross connecting plate 201. The bottom ends of a pair of T-shaped slide rods 202 are respectively fixedly inserted into the left and right ends of the cross connecting plate 201. The electric telescopic cylinder 200 drives the cross connecting plate 201 to move downward, and simultaneously drives the fixed shafts 106 and the T-shaped slide rods 202 to move downward.

[0048] The working principle of this embodiment is as follows: When it is necessary to further limit and fix the car swing arm 101 after it has been initially fixed by the clamping assembly of Embodiment 2, the electric telescopic cylinder 200 is activated. The telescopic rod of the electric telescopic cylinder 200 extends outward, driving the cross connecting plate 201 fixed at its end to move downward synchronously. The cross connecting plate 201 synchronously drives a pair of fixed shafts 106 and a pair of T-shaped slide rods 202 to move downward.

[0049] On the one hand, during the downward translation of the fixed shaft 106, the fixed shaft 106 drives the rotating inner cylinder 104 fixedly inserted outside it to move synchronously, so that the rotating inner cylinder 104 slides downward along the T-shaped sleeve 102 fixed on the bottom plate 100. At the same time, the elliptical horizontal plate 107 fixed at the top of the fixed shaft 106 moves downward synchronously with the fixed shaft 106. At this time, the positioning pin 105 slidably inserted in the bent pin hole 103 opened on the T-shaped sleeve 102 forms a limiting and guiding function, driving the rotating inner cylinder 104... The fixed shaft 106 and the elliptical horizontal plate 107 complete the rotation and descent action along the T-shaped sleeve 102; the elliptical horizontal plate 107 first moves down while maintaining the longitudinal distribution state, and then rotates to the lateral distribution state under the cooperation of the positioning pin 105 and the bending pin hole 103; the manual bolts 108 at both ends of the elliptical horizontal plate 107 move synchronously with the elliptical horizontal plate 107, and the lower pressure plate 109 fixed at its bottom end finally abuts against the end of the car swing arm 101 on the same side, realizing the re-limiting and fixing of the car swing arm 101;

[0050] On the other hand, during the downward translation of the T-shaped slide bar 202, the pair of hinged connecting rods 203 at both ends of the T-shaped slide bar 202 are deflected at an angle. Since the other end of the hinged connecting rod 203 is movably hinged to the inner end of the rectangular slide bar 204 that is symmetrically fixed in the fixed plate 207 on the base plate 100, the hinged connecting rod 203 drives the rectangular slide bar 204 to slide outward along the fixed sliding hole. The rubber head 205 fixed at the outer end of the rectangular slide bar 204 moves synchronously with the rectangular slide bar 204 and finally abuts against the end of the car swing arm 101 on the same side, thereby achieving the final limiting and fixing of the car swing arm 101.

[0051] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A welding support positioning device for a swing arm of an automobile, comprising a base plate (100), characterized in that: The top surface of the bottom plate (100) is symmetrically provided with a pair of U-shaped plates (300), and the front and rear sides of the top surface of the bottom plate (100) are symmetrically provided with two pairs of support seats (206), the U-shaped plate (300) is provided with an automobile swing arm (101), the two ends of the automobile swing arm (101) are placed on a pair of support seats (206) on the same side, and the U-shaped plate (300) is provided with a clamping assembly for limiting and fixing the automobile swing arm (101); a pair of T-shaped sleeves (102) are fixed on the bottom plate (100) between each pair of support seats (206), a rotating inner cylinder (104) is slidably inserted into the T-shaped sleeve (102), a fixed shaft (106) is fixedly inserted into the rotating inner cylinder (104), an elliptical horizontal plate (107) is fixedly provided at the top end of the fixed shaft (106), and a pressing assembly for limiting and fixing the automobile swing arm (101) is assembled on both ends of the elliptical horizontal plate (107).

2. The automobile swing arm welding support positioning device according to claim 1, characterized in that: The clamping assembly comprises a trapezoidal clamping block (400), a pair of fixed pin shafts (401) are fixedly inserted into the U-shaped plate (300), three pairs of trapezoidal clamping blocks (400) are hingedly provided on both sides of the fixed pin shaft (401), a pair of fixed ear seats (402) are hingedly provided on the fixed pin shaft (401), and the fixed ear seats (402) are fixedly connected with adjacent trapezoidal clamping blocks (400); and single ear seats (403) and double ear seats (404) are fixedly provided on both sides of the trapezoidal clamping block (400), and the adjacent single ear seat (403) and double ear seat (404) are hingedly connected through a connecting pin shaft (405).

3. The welding support positioning device for a swing arm of a vehicle according to claim 2, characterized in that: The front and rear sides of the U-shaped plate (300) are slidably provided with a pair of slidingly distributed translation plates (302), a pair of inclined pin holes (303) are symmetrically formed in the translation plate (302), a limiting pin shaft (407) is slidably inserted into the inclined pin hole (303), a limiting ear seat (406) is fixedly provided at the top end of the limiting pin shaft (407), and the limiting ear seat (406) is fixedly connected with the trapezoidal clamping block (400) on the same side.

4. The welding support positioning device for a swing arm of a vehicle according to claim 3, characterized in that: A pair of U-shaped rail clamps (304) are fixedly provided on both sides of the bottom surface of the translation plate (302), a I-shaped slide rail (301) is slidably provided in the U-shaped rail clamp (304), the bottom surface of the I-shaped slide rail (301) is fixedly connected with the top surface of the bottom plate (100), a rectangular sliding hole is formed in the bottom plate (100) between each pair of I-shaped slide rails (301), and a fixed sliding plate (307) is slidably inserted into the rectangular sliding hole.

5. The automotive swing arm welding support positioning device of claim 4, wherein: A pair of motors (305) are fixedly installed on both sides of the bottom surface of the bottom plate (100), a drive gear (306) is fixedly sleeved on the motor shaft end of the motor (305), a pair of staggered L-shaped racks (308) are meshingly provided on both sides of the drive gear (306), and the bottom end of the fixed sliding plate (307) on the same side is fixedly connected with the L-shaped rack (308).

6. The automotive swing arm welding support positioning device of claim 5, wherein: The T-shaped sleeve (102) is provided with a bending pin hole (103), and a positioning pin shaft (105) is slidably inserted into the bending pin hole (103), and the inner end of the positioning pin shaft (105) is fixedly connected with a rotating inner cylinder (104).

7. The automotive swing arm welding support positioning device of claim 6, wherein: The lower pressing assembly comprises a manual bolt (108) and a lower pressing plate (109), and the two end portions of the oval transverse plate (107) are threadedly and telescopically provided with a pair of manual bolts (108), the bottom end portions of the manual bolts (108) are fixedly provided with a lower pressing plate (109), and the bottom surface of the lower pressing plate (109) is tightly attached to the end portion of the automobile swing arm (101) on the same side.

8. The automotive swing arm welding support positioning device of claim 7, wherein: The bottom plate (100) is symmetrically provided with two pairs of fixed plates (207), the top end portions of the fixed plates (207) are telescopically provided with rectangular slide rods (204), the outer end portions of the rectangular slide rods (204) are fixedly provided with rubber heads (205), and the rubber heads (205) are tightly attached to the end portions of the automobile swing arms (101) on the same side.

9. The automotive swing arm welding support positioning device of claim 8, wherein: A pair of limiting sliding holes are formed in the bottom plate (100) between each pair of fixed plates (207), the T-shaped slide rods (202) are telescopically inserted into the limiting sliding holes, the two end portions of the T-shaped slide rods (202) are hingedly provided with a pair of hinged connecting rods (203), and each pair of hinged connecting rods (203) is movably hinged to the inner end portions of the rectangular slide rods (204) on the same side.

10. The automotive swing arm welding support positioning device of claim 9, wherein: The bottom surface of the bottom plate (100) is fixedly provided with an electric telescopic cylinder (200) in the middle portion, the telescopic rod end portion of the electric telescopic cylinder (200) is fixedly provided with a cross connecting plate (201), the bottom end portions of the pair of fixed shafts (106) are rotatably inserted into the front and rear end portions of the cross connecting plate (201), and the bottom end portions of the pair of T-shaped slide rods (202) are fixedly inserted into the left and right end portions of the cross connecting plate (201).

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