Automobile crossbeam welding tool

Abstract

The present invention discloses a welding fixture for automobile crossbeams, comprising a base and a movable plate, wherein the movable plate is slidably arranged on the top of the base, and a plurality of placement racks are equidistantly installed on the top of the movable plate, wherein a crossbeam is placed inside the placement rack. The present invention relates to the field of crossbeam welding technology. The automobile crossbeam welding fixture is provided with an automatic laminating mechanism, a centralized clamping mechanism, and an anti-dropping mechanism between the base, the movable plate, the placement rack, and the placement frame. In this way, during the welding process of the crossbeam and the movable plate, the device can automatically center and align the crossbeam and the longitudinal beam through the coordinated cooperation of the automatic laminating mechanism, the centralized clamping mechanism, and the anti-dropping mechanism, so as to facilitate welding and improve the overall welding efficiency. Secondly, through the position change of the placement rack and the placement frame in the automatic laminating mechanism after they are reset, the welded crossbeam and longitudinal beam can be automatically lifted and pushed out, so as to subsequently lift the vehicle frame composed of the crossbeam and longitudinal beam.

Description

Technical Field

[0001] The invention relates to the technical field of crossbeam welding, in particular to a welding tool for automobile crossbeams. Background Art

[0002] The crossbeam is a component of the vehicle frame. Welded together with the longitudinal beams, it forms a strong, rigid frame. Crossbeams provide torsional rigidity and support longitudinal loads, so they are often found in large numbers within a single frame.

[0003] Although the crossbeam can be welded with the longitudinal beam to form a strong frame, it is inevitable that it still has shortcomings in actual welding. Among them, the lack of corresponding automatic calibration tooling leads to cumbersome and time-consuming pre-welding processes of the crossbeam and the longitudinal beam, resulting in inconvenient welding and difficulty in further improving welding efficiency. In order to avoid such problems, an automobile crossbeam welding tool is proposed to solve the existing problems. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides an automobile crossbeam welding tool, which solves the problem that the crossbeams are inconvenient to automatically calibrate and fit with each other during the crossbeam welding process, resulting in inconvenient crossbeam welding.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a car crossbeam welding tool, including a base and a movable plate, the movable plate is slidably arranged on the top of the base, a number of placement racks are equidistantly installed on the top of the movable plate, a crossbeam is placed inside the placement rack, placement frames are slidably arranged on both sides of the top of the base, a longitudinal beam is placed inside the placement frame, an automatic bonding mechanism for use with the placement frame is provided on the top of the base, a centralized clamping mechanism for use with the placement frame is provided on the top of the base, and an anti-falling mechanism for use with the automatic bonding mechanism is provided on the top of the movable plate.

[0006] Preferably, the automatic bonding mechanism includes a servo motor, which is fixedly arranged on the top of the base, and the output shaft of the servo motor is fixedly connected to a bidirectional threaded rod through a coupling, and one end of the bidirectional threaded rod is rotatably connected to the top of the base through a bracket and a bearing, and one side of the placement frame is fixedly connected to a threaded sleeve that is threadably adapted to the bidirectional threaded rod by opening an installation groove, and the front and rear sides of both sides of the movable plate are fixedly connected to L-shaped rods, and a guide roller is fixedly connected between the two L-shaped rods on the same side, and the surface of the guide roller is rotatably connected to a rotating sleeve, and the front and rear sides of the opposite sides of the two placement frames are fixedly connected to Z-shaped push-pull frames used in conjunction with the rotating sleeve, and the two Z-shaped push-pull frames on the same plane are staggered.

[0007] The top of the lifting frame is connected with the lifting link of the lifting frame by the spring, and the bottom of the lifting frame is connected with the lifting link of the lifting frame at the rear end thereof of the cam.

[0008] Preferably, the top of the placement frame is fixedly connected to a second storage sleeve, the inside of the second storage sleeve is slidably connected to a second storage slide rod, the second storage spring is fixedly connected between the second storage slide rod and the second storage sleeve, the top of the second storage slide rod is fixedly connected to a lower pressure plate, the bottom of the lower pressure plate is equidistantly fixedly connected to a ball pressure rod, and the bottom end of the ball pressure rod extends to the interior of the placement frame, and both sides of the top of the base are fixedly provided with a push rod through a bracket, and a sleeve is rotatably provided on the surface of the push rod, and one side of the lower pressure plate is fixedly connected to a special-shaped pull rod used in conjunction with the sleeve.

[0009] Preferably, the anti-falling mechanism includes a mounting block, two mounting blocks are symmetrically arranged at the same plane position, and the two mounting blocks are respectively fixedly arranged on both sides of the bottom of the placement rack, and the two mounting blocks are rotatably connected to the rotating shaft on the opposite side, and a box cover is fixedly connected between the two rotating shafts, and the box cover and the interior of the placement rack are rotatably installed with displacement guide rods, and several displacement guide rods are equidistantly arranged, and the surface of the rotating shaft is fixedly connected to a gear, and both sides of the rear side of the placement rack are slidably connected to tooth plates meshing with the gear, and the bottoms of several tooth plates on the same side are commonly fixedly connected to a centralized control rod, and the bottom of the centralized control rod is rotatably connected to a roller rod by opening a mounting groove, and the top of the Z-shaped sliding frame is fixedly connected to a stop plate used in conjunction with the centralized control rod.

[0010] Preferably, the front and rear sides of both sides of the top of the base are fixedly connected to the first electric telescopic rod, the ends of the two extended ends of the first electric telescopic rod on the same side are commonly fixedly connected to a container frame, the top of the container frame is equidistantly fixedly connected to a plurality of second electric telescopic rods by opening mounting grooves, the bottom of the extended end of the second electric telescopic rod is fixedly connected to a first U-shaped frame, vertical welding guns are installed on the front and rear sides of the bottom of the first U-shaped frame, the top of the container frame is equidistantly fixedly connected to a plurality of third electric telescopic rods by opening mounting grooves, the bottom of the extended end of the third electric telescopic rod is installed with a fourth electric telescopic rod, the end of the extended end of the fourth electric telescopic rod is fixedly connected to the second U-shaped frame, and horizontal welding guns are installed on the top and bottom of the front side of the second U-shaped frame.

[0011] Preferably, a slide groove is provided on the front side and the rear side of the top of the base, and sliders are slidably connected to both sides of the inner cavity of the slide groove, and the top of the slider is fixedly connected to the bottom of the placement frame.

[0012] Preferably, the front and rear sides of the top of the base are fixedly connected to a limiting sleeve, the interior of the limiting sleeve is slidably connected to a limiting rod, and the top of the limiting rod is fixedly connected to the bottom of the movable plate.

[0013] Preferably, both sides of the rear side of the placement rack are provided with limiting sliding grooves, the interior of the limiting sliding grooves is slidably connected to the limiting slider, and the rear side of the limiting slider is fixedly connected to the front side of the tooth plate.

[0014] Preferably, a return spring is fixedly connected between the limiting sliding block and the limiting sliding groove.

[0015] Beneficial effects

[0016] The present invention provides a welding tool for automobile crossbeams. Compared with existing technologies, it has the following advantages:

[0017] (1) The automobile crossbeam welding fixture sets an automatic fitting mechanism, a centralized clamping mechanism and an anti-dropping mechanism between the base, the movable plate, the placement frame and the placement frame, so that during the welding process of the crossbeam and the movable plate, the device can automatically fit the crossbeam and the longitudinal beam in the center through the coordinated cooperation of the automatic fitting mechanism, the centralized clamping mechanism and the anti-dropping mechanism for welding, thereby improving the overall welding efficiency. Secondly, through the position change after the placement frame and the placement frame in the automatic fitting mechanism are reset, the welded crossbeam and longitudinal beam can be automatically lifted and pushed out, so as to subsequently lift the vehicle frame composed of the crossbeam and longitudinal beam, and simultaneously press the top of the crossbeam to avoid the problem that the crossbeam is not placed in the center, resulting in excessive deviation on one side during the mobile calibration process, causing the crossbeam to slide down and fall off, and simultaneously clamp and press the longitudinal beam in the center to ensure the accuracy of the welding position between the longitudinal beam and the crossbeam.

[0018] (2) The automobile crossbeam welding fixture is provided with a pulley which is rotated on the surface of the handle clamping frame, so that when the handle clamping frame and the inclined frame are squeezed and displaced, the pulley can be used as a rolling medium to reduce the friction between the handle clamping frame and the inclined frame.

[0019] (3) The automobile crossbeam welding fixture sets displacement guide rods inside the box cover and the placement frame. When the crossbeam is not placed in the center, the rolling pressure of the displacement guide rods and the lateral squeezing of the longitudinal beam can make the crossbeam easy to adjust its position smoothly.

[0020] (4) The automobile crossbeam welding fixture sets a reset spring between the limit slider and the limit slide groove, so that the tooth plate connected to the limit slider can quickly reset and pull down by applying tension to the limit slider through the reset spring when resetting. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the external structure of the present invention;

[0022] Figure 2 A cross-sectional view of the frame structure of the present invention;

[0023] Figure 3 Schematic diagram of the centralized clamping mechanism structure of the present invention (1);

[0024] Figure 4 Schematic diagram of the centralized clamping mechanism structure of the present invention (2);

[0025] Figure 5 Schematic diagram of the centralized clamping mechanism structure of the present invention (3);

[0026] Figure 6 Schematic diagram of the centralized clamping mechanism structure of the present invention (four);

[0027] Figure 7 A top view of the movable plate structure of the present invention;

[0028] Figure 8 It is a side view of the placement rack structure of the present invention;

[0029] Figure 9 This is a diagram illustrating the coordination between the placement rack and the box cover structure of the present invention;

[0030] Figure 10 This is a bottom view of the centralized control rod structure of the present invention;

[0031] Figure 11 This is a schematic diagram of the centering coordination of the crossbeam and longitudinal beam structure of the present invention;

[0032] Figure 12 It is a side view of the pallet structure of the present invention.

[0033] In the figure: 1. base; 2. movable plate; 3. placement rack; 4. crossbeam; 5. placement frame; 6. longitudinal beam; 7. automatic laminating mechanism; 701. servo motor; 702. bidirectional threaded rod; 703. threaded sleeve; 704. L-shaped rod; 705. guide roller; 706. rotating sleeve; 707. Z-shaped push-pull frame; 8. centralized clamping mechanism; 801. sliding groove; 802. clamping rack with handle; 803. clamping roller; 804. pulley; 805. oblique rack; 806. first receiving sleeve; 807. first receiving slide rod; 808. first receiving spring; 809. second receiving sleeve; 810. second receiving slide rod; 811. second receiving spring; 812. lower pressure plate; 813. ball pressure rod ;814, push rod;815, sleeve;816, special-shaped pull rod;9, anti-fall mechanism;901, mounting block;902, rotating shaft;903, box cover;904, guide rod;905, gear;906, tooth plate;907, centralized control rod;908, roller rod;909, stop plate;10, first electric telescopic rod;11, assembly frame;12, second electric telescopic rod;13, first U-shaped frame;14, vertical welding gun;15, third electric telescopic rod;16, fourth electric telescopic rod;17, second U-shaped frame;18, horizontal welding gun;19, slide;20, slider;21, limiting sleeve;22, limiting rod;23, limiting slide;24, limiting slider;25, reset spring. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0035] See also Figure 1-12The present invention provides a technical solution: a welding tool for automobile crossbeams, comprising a base 1 and a movable plate 2, the movable plate 2 being slidably arranged on the top of the base 1, the front and rear sides of the top of the base 1 being fixedly connected to a limiting sleeve 21, the internal sliding connection of the limiting sleeve 21 being a limiting rod 22, and the top of the limiting rod 22 being fixedly connected to the bottom of the movable plate 2, a plurality of placement racks 3 being equidistantly installed on the top of the movable plate 2, a crossbeam 4 being placed inside the placement rack 3, a placement frame 5 being slidably arranged on both sides of the top of the base 1, a slide groove 19 being opened on the front and rear sides of the top of the base 1, a slider 20 being slidably connected on both sides of the inner cavity of the slide groove 19, and the top of the slider 20 being fixedly connected to the bottom of the placement frame 5, a longitudinal beam 6 being placed inside the placement frame 5, the front and rear sides of the top of the base 1 and The rear sides are fixedly connected to a first electric telescopic rod 10, and the ends of the extended ends of the two first electric telescopic rods 10 on the same side are commonly fixedly connected to a container 11. The top of the container 11 is equidistantly fixedly connected to a number of second electric telescopic rods 12 by opening mounting grooves, and the bottom of the extended end of the second electric telescopic rod 12 is fixedly connected to a first U-shaped frame 13. Vertical welding guns 14 are installed on the front and rear sides of the bottom of the first U-shaped frame 13. Several third electric telescopic rods 15 are equidistantly fixedly connected to the top of the container 11 by opening mounting grooves, and a fourth electric telescopic rod 16 is installed at the bottom of the extended end of the third electric telescopic rod 15. The end of the extended end of the fourth electric telescopic rod 16 is fixedly connected to a second U-shaped frame 17, and horizontal welding guns 18 are installed on the top and bottom of the front side of the second U-shaped frame 17.

[0036] As a preferred embodiment, in order to facilitate the automatic calibration and fitting of the crossbeam 4 and the longitudinal beam 6 for quick welding, an automatic fitting mechanism 7 is provided on the top of the base 1 for use with the placement frame 5. The automatic fitting mechanism 7 includes a servo motor 701, and the servo motor 701 is fixedly arranged on the top of the base 1. The output shaft of the servo motor 701 is fixedly connected to the bidirectional threaded rod 702 through a coupling, and one end of the bidirectional threaded rod 702 is rotatably connected to the top of the base 1 through a bracket and a bearing. One side of the placement frame 5 is fixedly connected to a threaded sleeve 703 that is threadedly adapted to the bidirectional threaded rod 702 by opening an installation groove. The front and rear sides of both sides of the movable plate 2 are fixedly connected to L-shaped rods 704, and a guide roller 705 is fixedly connected between the two L-shaped rods 704 on the same side. The surface of the guide roller 705 is rotatably connected to a rotating sleeve 706. The front and rear sides of the opposite sides of the two placement frames 5 are fixedly connected to Z-shaped push-pull frames 707 used in conjunction with the rotating sleeve 706, and the two Z-shaped push-pull frames 707 on the same plane are staggered.

[0037] As a preferred embodiment, in order to facilitate the centering clamping of the longitudinal beam 6, a centralized clamping mechanism 8 used in conjunction with the placement frame 5 is provided on the top of the base 1. The centralized clamping mechanism 8 includes a sliding groove 801. There are two sliding grooves 801 on the same side, and the two sliding grooves 801 are respectively opened on the front and rear sides of the bottom of the inner cavity of the placement frame 5. The inner sliding groove 801 is connected to a clamping frame 802 with a handle. The top and bottom of the inner cavity of the clamping frame 802 are rotatably connected to the longitudinal beam 6 through a bearing. The clamping roller 803 used in conjunction with the beam 6 is provided with a plurality of clamping rollers 803 at equal intervals. The surface of the clamping frame 802 with a handle is provided with a pulley 804 which is rotatably mounted on the bottom of the placement frame 5 through the mounting frame. The front and rear sides of the top of the base 1 are fixedly connected to an oblique frame 805 used in conjunction with the pulley 804 through a bracket. The front and rear sides of the bottom of the wide surface of the placement frame 5 are fixedly connected to a first receiving sleeve 806. The interior of the first receiving sleeve 806 is slidably connected to a first receiving slide rod 807. The end of the first storage slide 807 is fixedly connected to the surface of the handle clamping frame 802, the first storage slide 807 and the first storage sleeve 806 are fixedly connected with a first storage spring 808, the top of the placement frame 5 is fixedly connected with a second storage sleeve 809, the interior of the second storage sleeve 809 is slidably connected with a second storage slide 810, the second storage slide 810 and the second storage sleeve 809 are fixedly connected with a second storage spring 811, and the top of the second storage slide 810 is fixedly connected. It is connected to a lower pressure plate 812, and the bottom of the lower pressure plate 812 is fixedly connected with a ball pressure rod 813 at equal intervals, and the bottom end of the ball pressure rod 813 extends to the inside of the placement frame 5. As a detailed explanation: the ball pressure rod 813 is composed of a vertical rod and a ball, and the ball is arranged at the bottom end of the vertical rod, and both sides of the top of the base 1 are fixed with a top rod 814 through a bracket, and a sleeve 815 is rotated on the surface of the top rod 814, and one side of the lower pressure plate 812 is fixedly connected with a special-shaped pull rod 816 used in conjunction with the sleeve 815.

[0038] As a preferred embodiment, in order to prevent the crossbeam 4 from accidentally falling off, an anti-falling mechanism 9 used in conjunction with the automatic laminating mechanism 7 is provided on the top of the movable plate 2. The anti-falling mechanism 9 includes a mounting block 901. Two mounting blocks 901 are symmetrically provided at the same plane position, and the two mounting blocks 901 are fixedly arranged on both sides of the bottom of the placement rack 3. The two mounting blocks 901 are rotatably connected to the opposite sides with a rotating shaft 902. A box cover 903 is fixedly connected between the two rotating shafts 902. The box cover 903 and the interior of the placement rack 3 are both rotatable. A displacement guide rod 904 is dynamically installed, and several displacement guide rods 904 are equidistantly arranged. A gear 905 is fixedly connected to the surface of the rotating shaft 902. Both sides of the rear side of the placement rack 3 are slidably connected to toothed plates 906 that mesh with the gear 905. The bottoms of several toothed plates 906 on the same side are fixedly connected to a centralized control rod 907. The bottom of the centralized control rod 907 is rotatably connected to a roller rod 908 through a mounting slot. The top of the Z-shaped push-pull frame 707 is fixedly connected to a stop plate 909 used in conjunction with the centralized control rod 907.

[0039] As a detailed explanation, limiting grooves 23 are provided on both sides of the rear side of the placement rack 3, the internal sliding connection of the limiting grooves 23 is connected to the limiting slider 24, and the rear side of the limiting slider 24 is fixedly connected to the front side of the tooth plate 906, and a return spring 25 is fixedly connected between the limiting slider 24 and the limiting groove 23.

[0040] Step 1: Initial loading: Place two longitudinal beams 6 into the two placement frames 5 respectively. Since the inner width of the placement frame 5 is shorter than the longitudinal beam 6, the welded surface of the longitudinal beam 6 protrudes from the outside of the placement frame 5. Then, place multiple cross beams 4 into the corresponding placement frames 3 in sequence.

[0041] Step 2, calibration and fitting welding: start the servo motor 701 to cause the bidirectional threaded rod 702 to rotate, and the bidirectional threaded rod 702 rotates, and the threaded sleeves 703 on both sides of its surface respectively carry the two placement frames 5 to close toward the top midpoint of the base 1. When the placement frame 5 carries the longitudinal beam 6 to move, the placement frame 5 synchronously carries the Z-type push-pull frame 707 to move horizontally, and the Z-type push-pull frame 707 transverse guide roller 705 will gradually transfer from the upper balance cavity of the Z-type push-pull frame 707 to the lower balance cavity, causing the movable plate 2 to carry the placement frame 3 and the crossbeam 4 to descend, causing the final descending position of the crossbeam 4 to be calibrated in the center of the side of the longitudinal beam 6, and as the placement frame 5 and the longitudinal beam 6 continue to move horizontally, the side of the longitudinal beam 6 will eventually be squeezed and fitted with the side of the crossbeam 4 that has reached the lowered limit position;

[0042] Then, the first electric telescopic rod 10 is activated, causing the extended end of the first electric telescopic rod 10 to drive the pallet 11, the second electric telescopic rod 12, and the third electric telescopic rod 15 to move horizontally, so that the welding paths of the vertical welding gun 14 and the horizontal welding gun 18 can contact the welding surface between the crossbeam 4 and the longitudinal beam 6. Then, the vertical welding gun 14 and the horizontal welding gun 18 are operated alternately in the vertical and horizontal welding processes, so that the welding surface between the crossbeam 4 and the longitudinal beam 6 can be welded;

[0043] Step 3: The crossbeam 4 is held firmly: In the process of the Z-type push-pull frame 707 moving horizontally in step 2 to cause the movable plate 2 to carry the placement rack 3 and the crossbeam 4 to descend, the Z-type push-pull frame 707 moves horizontally and synchronously carries the stop plate 909 to move to pre-block the descending height of the subsequent centralized control rod 907. The placement rack 3 synchronously drives the tooth plate 906 and the centralized control rod 907 to descend. During the descending process, the centralized control rod 907 will be blocked by the stop plate 909 and fall on the top of the stop plate 909. As the centralized control rod 907 continues to move downward, the stop plate 90 9 is lowered and squeezed, the centralized control rod 907 will slide upward, and the sliding of the centralized control rod 907 drives the tooth plate 906 to engage with the gear 905, causing the rotating shaft 902 to drive the box cover 903 to finally rotate 90 degrees. The box cover 903 rotates 90 degrees to firmly press the top of the beam 4. When the centralized control rod 907 drives the tooth plate 906 to engage with the gear 905, causing the box cover 903 to rotate 90 degrees, the guide rollers 705 will successively move from the upper balancing cavity of the Z-shaped push-pull frame 707 to the lower balancing cavity, limiting the upward sliding engagement distance of the tooth plate 906 at this moment;

[0044] Step 4: Fix the longitudinal beam 6 in the center: When the placement frame 5 carries the longitudinal beam 6 to move horizontally, the placement frame 5 synchronously drives the clamping frame 802 with a handle to move horizontally, and the clamping frame 802 with a handle drives the pulley 804 to move. The movement of the pulley 804 will squeeze and contact the inclined surface of the inclined frame 805, prompting the pulley 804 to carry the clamping frame 802 with a handle to move into the placement frame 5, and the clamping frame 802 with a handle drives the clamping roller 803 to fit and clamp the end of the longitudinal beam 6;

[0045] The placement frame 5 moves laterally and synchronously drives the lower pressure plate 812 and the special-shaped pull rod 816 to move laterally. The special-shaped pull rod 816 moves and its concave portion is pulled out from the bottom of the sleeve 815, thereby causing the straight rod in the special-shaped pull rod 816 that is higher than the concave portion to form an extrusion fit with the sleeve 815, causing the special-shaped pull rod 816 to drive the lower pressure plate 812 and the ball pressure rod 813 to descend. The ball pressure rod 813 descends and the ball portion at the bottom end thereof is pressed against the top of the longitudinal beam 6.

[0046] Step 5, lifting and discharging: After the welding of the crossbeam 4 and the longitudinal beam 6 is completed, reset the placement frame 5 to force the longitudinal beam 6 to leave the inside of the placement frame 5. After the placement frame 5 is reset, the movable plate 2 and the placement rack 3 are reset and raised in succession. When several placement racks 3 are reset and raised, they will jointly lift the welded crossbeam 4 and longitudinal beam 6.

Claims

1. A welding tool for an automobile crossbeam, comprising a base (1) and a movable plate (2), wherein the movable plate (2) is slidably arranged on the top of the base (1), and is characterized in that: A plurality of placement racks (3) are equidistantly installed on the top of the movable plate (2), a crossbeam (4) is placed inside the placement rack (3), placement frames (5) are slidably provided on both sides of the top of the base (1), a longitudinal beam (6) is placed inside the placement frame (5), an automatic laminating mechanism (7) used in conjunction with the placement frame (5) is provided on the top of the base (1), a centralized clamping mechanism (8) used in conjunction with the placement frame (5) is provided on the top of the base (1), and an anti-falling mechanism (9) used in conjunction with the automatic laminating mechanism (7) is provided on the top of the movable plate (2); The automatic laminating mechanism (7) includes a servo motor (701), the servo motor (701) is fixedly arranged on the top of the base (1), the output shaft of the servo motor (701) is fixedly connected to a bidirectional threaded rod (702) through a coupling, and one end of the bidirectional threaded rod (702) is rotatably connected to the top of the base (1) through a bracket and a bearing, one side of the placement frame (5) is fixedly connected to a threaded sleeve (703) threadedly adapted to the bidirectional threaded rod (702) by providing a mounting groove, the front and rear sides of both sides of the movable plate (2) are fixedly connected to L-shaped rods (704), a guide roller (705) is fixedly connected between the two L-shaped rods (704) on the same side, the surface of the guide roller (705) is rotatably connected to a rotating sleeve (706), the front and rear sides of the opposite sides of the two placement frames (5) are fixedly connected to Z-shaped push-pull frames (707) used in conjunction with the rotating sleeve (706), and the two Z-shaped push-pull frames (707) on the same plane are staggered. The centralized clamping mechanism (8) includes a sliding groove (801), two sliding grooves (801) are provided on the same side, and the two sliding grooves (801) are respectively opened at the front side and the rear side of the bottom of the inner cavity of the placement frame (5), and the interior of the sliding groove (801) is slidably connected to a clamping frame (802) with a handle, and the top and bottom of the inner cavity of the clamping frame (802) are rotatably connected to a clamping roller (803) used in conjunction with the longitudinal beam (6) through a bearing, and a plurality of clamping rollers (803) are equidistantly provided, and the surface of the clamping frame (802) and the bottom of the placement frame (5) are connected by a mounting frame. A pulley (804) is rotatably mounted, the front and rear sides of the top of the base (1) are fixedly connected to an inclined frame (805) used in conjunction with the pulley (804) through a bracket, the front and rear sides of the bottom of the wide surface of the placement frame (5) are fixedly connected to a first storage sleeve (806), the interior of the first storage sleeve (806) is slidably connected to a first storage slide rod (807), and the end of the first storage slide rod (807) is fixedly connected to the surface of the handle clamping frame (802), and a first storage spring (808) is fixedly connected between the first storage slide rod (807) and the first storage sleeve (806); The anti-falling mechanism (9) includes a mounting block (901), two mounting blocks (901) are symmetrically arranged at the same plane position, and the two mounting blocks (901) are fixedly arranged on both sides of the bottom of the placement rack (3), and the two mounting blocks (901) are rotatably connected to the opposite sides of the two mounting blocks (901) with a rotating shaft (902), and a box cover (903) is fixedly connected between the two rotating shafts (902). The box cover (903) and the placement rack (3) are both rotatably installed with displacement guide rods (904), and the displacement guide rods (904) are equidistantly arranged. There are several of them, the surface of the rotating shaft (902) is fixedly connected with a gear (905), both sides of the rear side of the placement frame (3) are slidably connected with a toothed plate (906) meshing with the gear (905), the bottoms of several toothed plates (906) on the same side are fixedly connected with a centralized control rod (907), the bottom of the centralized control rod (907) is rotatably connected with a roller rod (908) through a mounting groove, and the top of the Z-shaped push-pull frame (707) is fixedly connected with a stop plate (909) used in conjunction with the centralized control rod (907).

2. The automobile crossbeam welding tool according to claim 1, characterized in that: The top of the placement frame (5) is fixedly connected to a second storage sleeve (809), the interior of the second storage sleeve (809) is slidably connected to a second storage slide rod (810), a second storage spring (811) is fixedly connected between the second storage slide rod (810) and the second storage sleeve (809), the top of the second storage slide rod (810) is fixedly connected to a lower pressure plate (812), the bottom of the lower pressure plate (812) is equidistantly fixedly connected to a ball pressure rod (813), and the bottom end of the ball pressure rod (813) extends to the interior of the placement frame (5), both sides of the top of the base (1) are fixedly provided with a push rod (814) through a bracket, the surface of the push rod (814) is rotatably provided with a sleeve (815), and one side of the lower pressure plate (812) is fixedly connected to a special-shaped pull rod (816) used in conjunction with the sleeve (815).

3. The automobile crossbeam welding tool according to claim 1, characterized in that: The front and rear sides of both sides of the top of the base (1) are fixedly connected to a first electric telescopic rod (10), and the ends of the two extended ends of the first electric telescopic rods (10) on the same side are fixedly connected to a container frame (11). The top of the container frame (11) is fixedly connected to a plurality of second electric telescopic rods (12) at equal intervals by opening a mounting groove, and the bottom of the extended end of the second electric telescopic rod (12) is fixedly connected to a first U-shaped frame (13). The front and rear sides of the bottom of the first U-shaped frame (13) are both installed with a vertical welding gun (14). The top of the container frame (11) is fixedly connected to a plurality of third electric telescopic rods (15) at equal intervals by opening a mounting groove, and the bottom of the extended end of the third electric telescopic rod (15) is installed with a fourth electric telescopic rod (16). The end of the extended end of the fourth electric telescopic rod (16) is fixedly connected to a second U-shaped frame (17), and a horizontal welding gun (18) is both installed at the top and bottom of the front side of the second U-shaped frame (17).

4. The automobile crossbeam welding tool according to claim 1, characterized in that: The front and rear sides of the top of the base (1) are both provided with a slide groove (19), both sides of the inner cavity of the slide groove (19) are slidably connected with a slider (20), and the top of the slider (20) is fixedly connected to the bottom of the placement frame (5).

5. The automobile crossbeam welding tool according to claim 1, characterized in that: The front and rear sides of the top of the base (1) are fixedly connected to a limiting sleeve (21), the interior of the limiting sleeve (21) is slidably connected to a limiting rod (22), and the top of the limiting rod (22) is fixedly connected to the bottom of the movable plate (2).

6. The automobile crossbeam welding tool according to claim 2, characterized in that: Both sides of the rear side of the placement rack (3) are provided with a limiting slide groove (23), the interior of the limiting slide groove (23) is slidably connected to the limiting slider (24), and the rear side of the limiting slider (24) is fixedly connected to the front side of the tooth plate (906).

7. The automobile crossbeam welding tool according to claim 6, characterized in that: A return spring (25) is fixedly connected between the limiting slide block (24) and the limiting slide groove (23).

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