Auxiliary welding device for chassis of heavy truck

Abstract

The invention relates to the technical field of auxiliary welding, in particular to a heavy truck chassis auxiliary welding device which comprises a bottom plate, a clamping mechanism and an auxiliary mechanism. The two main beams are located at designated positions through cooperation of a fixing plate and a pushing plate in a first limiting set, the two main beams are parallel to each other through clamping and limiting of the left section and the right section of each main beam, the two main beams are pulled to be tightly attached to the front end face and the rear end face of the cross beam through two second clamping plates in the cross beam placing process, and then the cross beam is placed. The situation that the main beams and the cross beams cannot be welded due to the fact that the distance between the two main beams is too large is avoided, the welded cross beams and the unwelded cross beams are limited through the positioning sets in the cross beam placing process, the intervals between the two adjacent cross beams are equal, and the situation that the intervals between the two adjacent cross beams are not equal is avoided. Therefore, the strength distribution of the welded frame is not uniform.

Description

Technical Field

[0001] The invention relates to the technical field of auxiliary welding, in particular to an auxiliary welding device for a heavy-duty vehicle chassis. Background Art

[0002] The chassis of a heavy-duty vehicle is the skeleton of the entire vehicle, and it plays an important role in supporting the vehicle body, suspension chassis components, power system and other important components. The frame is the main framework of the heavy-duty vehicle chassis, and the frame is mainly composed of two main beams and multiple cross beams welded between the two main beams (see Figure 8 ).

[0003] The existing welding process for the vehicle frame usually involves workers placing and fixing two main beams, and then welding a plurality of cross beams between the two main beams.

[0004] At present, there are the following problems in the welding processing technology of the frame: 1. In the prior art, when the staff place the main beam, they usually use the existing load-bearing equipment to lift the main beam and place it in the specified position, and then fix the main beam. This placement method makes it difficult to achieve parallelism between the two main beams, which makes it difficult to achieve close contact between the two main beams and the cross beam during welding of the main beam and the cross beam. It is easy for the distance between the two main beams to be too large, making it impossible to weld the main beam and the cross beam. At the same time, it is easy for some parts of the two main beams to be too small, and the cross beam needs to be deflected at a certain angle before welding the main beam and the cross beam, which leads to a decrease in the load-bearing capacity of the frame after processing.

[0005] 2. In the existing frame processing technology, workers need to use load-bearing equipment to place the crossbeam between the two main beams, which makes it difficult to achieve equal spacing between two adjacent crossbeams. It is easy for the spacing between two adjacent crossbeams to be unequal, resulting in uneven strength distribution of the frame after welding. Summary of the invention

[0006] Based on this, it is necessary to provide a heavy-duty vehicle chassis auxiliary welding device, aiming to solve the problems of the above-mentioned prior art.

[0007] The present application provides a heavy-duty vehicle chassis auxiliary welding device, comprising:

[0008] A bottom plate, wherein a U-shaped plate with an opening facing downward is fixedly provided on the upper end surface of the bottom plate, a sliding groove extending in the left-right direction is penetrated through the upper end surface of the U-shaped plate, a sliding block is slidably arranged in the sliding groove, a sliding rod with an axis extending from top to bottom is slidably penetrated on the sliding block, a longitudinal plate is fixedly provided on the lower end surface of the sliding rod, and two through grooves extending from left to right are penetrated through the bottom plate, and the two through grooves are symmetrical front to back.

[0009] A clamping mechanism is provided on the longitudinal plate for clamping the cross beam, and an auxiliary mechanism for limiting the welding position of the cross beam is provided between the bottom plate and the U-shaped plate. The auxiliary mechanism includes a limit group 1 for limiting the position of the main beam, and the auxiliary mechanism includes a limit group 2 for limiting the rightward movement distance of the slider.

[0010] The clamping mechanism includes a lower pressure bar, and the upper end surface of the longitudinal plate slides up and down and penetrates two lower pressure bars symmetrically distributed front and back. A clamping group 1 for clamping the crossbeam is jointly arranged between the lower pressure bar and the longitudinal plate. Two fixing rods with axes extending from left to right and symmetrically distributed front and back are fixedly arranged on the left end surface of the longitudinal plate, and a positioning group is arranged on the fixing rod. The clamping mechanism includes a clamping group 2 for pulling the main beam close to the crossbeam.

[0011] According to a favorable embodiment, a limit group 1 is provided on the upper end surface of the base plate, and the limit group 1 includes a sliding plate. Two sliding plates that are symmetrical left and right and located between the two vertical sections of the U-shaped plate are provided on the upper end surface of the base plate for sliding left and right. Two clamping plates that are symmetrical left and right and located between the two sliding plates are provided on the base plate for sliding left and right. Two front-to-back symmetrical pushing plates are provided on the opposite surfaces of the two clamping plates for sliding back and forth through two horizontal bars. A connecting bar is hingedly connected to the horizontal bar and the corresponding sliding plate. A spring 1 is fixedly provided between the clamping plate and the corresponding sliding plate. Four fixed plates distributed in a matrix are fixedly provided on the upper end surface of the base plate.

[0012] According to a favorable embodiment, the clamping group 1 includes a clamping bar, and the upper end surface of the longitudinal plate slides left and right and penetrates two left-right symmetrical clamping bars, and the two clamping bars are respectively located on the left and right sides of the corresponding lower pressure bar, and the lower end surface of the clamping bar is fixedly provided with a clamping plate 1 for clamping the crossbeam, and the two clamping bars and the corresponding lower pressure bars are hingedly connected to the pulling bar, and the lower end surfaces of the two lower pressure bars are fixedly provided with a lower pressure plate, and a spring 2 is fixedly provided between the lower pressure plate and the longitudinal plate.

[0013] According to a preferred embodiment, a clamping group 2 is commonly provided between the two clamping bars and the longitudinal plates, the clamping group 2 includes a transmission plate, transmission plates are fixedly provided on the opposite back surfaces of the two left and right opposite clamping bars through a horizontal plate, and the two left and right opposite transmission plates are staggered up and down, a transmission groove is penetrated through a section of the transmission plate away from the clamping bar, a moving bar is slidingly provided on the longitudinal plate, and the two moving bars are symmetrical front and back, a clamping plate 2 for pulling the main beam is fixedly provided on the lower end surface of the moving bar, moving plates are fixedly provided on the opposite surfaces of the two moving bars, a longitudinal groove extending backward is provided on the upper end surface of the moving plate, a transmission column is slidingly provided in the longitudinal groove through a moving block, and the transmission column is simultaneously located in the corresponding two transmission grooves, and a spring 3 is commonly fixedly provided between the moving block and the inner wall of the longitudinal groove.

[0014] According to a favorable embodiment, a limiting group 2 is provided on the upper end surface of the U-shaped plate, and the limiting group 2 includes a placement groove. A plurality of equally spaced placement grooves are provided on the front inner wall of the sliding groove. A limiting block is provided in the placement groove for sliding back and forth. The limiting block is a right-angled trapezoid with an inclined surface facing the right side, and its inclined surface is inclined forward from left to right. A spring 4 is fixedly provided between the limiting block and the inner wall of the placement groove.

[0015] According to a preferred embodiment, a transmission group 1 is provided on the upper end surface of the U-shaped plate, and the transmission group 1 includes an L-shaped bar. The upper end surface of the horizontal section of the U-shaped plate is slidably provided with a plurality of L-shaped bars corresponding to the positions of the limit blocks one by one. A pushing bar is fixedly provided on the lower end surface of the right section of the transverse section of the L-shaped bar. The pushing bar is a right-angled triangle with an inclined surface facing the left side, and its inclined surface is inclined forward from left to right. A pulling rod with an axis extending from front to rear is slidably provided on the lower end surface of the left section of the transverse section of the L-shaped bar through a connecting plate, and the rear end surface of the pulling rod is an inclined surface, and the inclined surface is inclined backward from left to right. A vertical rod with an axis extending from top to bottom is fixedly provided on the front end surface of the pulling rod through a square plate, and a spring 5 mounted on the corresponding pulling rod is fixedly provided between the connecting plate and the square plate.

[0016] According to a favorable embodiment, the positioning group includes a positioning plate, and the two fixed rods are both provided with positioning plates for sliding left and right. The fixed rods are penetrated by a plurality of positioning holes with axes extending from top to bottom and equidistantly distributed from left to right. The positioning plate is provided with latch holes, and a positioning pin is inserted into each latch hole and the positioning hole at the corresponding position.

[0017] According to a preferred embodiment, a transmission group 2 is provided on the upper end surface of the horizontal section of the U-shaped plate, and the transmission group includes a U-shaped bar, and the upper end surface of the horizontal section of the U-shaped plate is slidably provided with a U-shaped bar with an opening facing the rear side, and the front end surface of the transverse section of the U-shaped bar is fixedly provided with a plurality of equally distributed pushing blocks 1, and the pushing block 1 is a right-angled trapezoid with an inclined surface facing the right side, and its inclined surface is inclined backward from left to right, and the upper end surface of the horizontal section of the U-shaped plate is slidably provided with a transmission bar located between the vertical rod and the U-shaped bar, and the rear end surface of the transmission bar is fixedly provided with a plurality of pushing blocks 2 that are equally distributed from left to right and cooperate with the pushing block 1, and the pushing block 2 is a right-angled trapezoid with an inclined surface facing the left side, and its inclined surface is inclined backward from left to right, and the rear end surface of the transverse section of the U-shaped bar is fixedly provided with a plurality of fixed blocks that are equally distributed from left to right and cooperate with the corresponding L-shaped bar longitudinal sections.

[0018] In summary, the present invention includes at least one of the following beneficial effects: 1. In the present invention, the two main beams are in the specified position through the cooperation between the inner fixed plate and the pushing plate of the limiting group 1, and the two main beams are parallel to each other through the clamping and limiting of the left and right sections of the main beams. In the process of placing the crossbeams, the two main beams are pulled close to the front and rear end faces of the crossbeams by the two clamping plates 2, thereby avoiding the failure to weld the main beams and the crossbeams due to the large distance between the two main beams. In the process of placing the crossbeams, the positioning group is used to limit the welded crossbeams and the unwelded crossbeams, so that the intervals between the two adjacent crossbeams are equal, thereby avoiding the unequal intervals between the two adjacent crossbeams, which leads to uneven strength distribution of the frame after welding.

[0019] 2. In the present invention, the left and right opposite guide plates cooperate with the main beam so that the main beam is in the designated area in the left and right directions. Then, the two sections of the main beam are stretched and clamped by the limiting group 1, so that the two main beams are parallel to each other and a rectangular area is formed between them. This avoids the situation where the interval between the two main beams is too small and the cross beam needs to be deflected by a certain angle before welding the main beams to the cross beams, thereby reducing the bearing capacity of the frame after processing. In the process of placing the cross beams, the two main beams are pulled close to the cross beams by the clamping plate 2, thereby avoiding the situation where the distance between the two main beams is too large and the main beams cannot be welded to the cross beams.

[0020] 3. In the present invention, the distance between the unwelded beam and the welded beam is controlled by adjusting the distance between the positioning plate and the longitudinal plate. At the same time, the two positioning plates cooperate to make the two adjacent beams parallel to each other. In the process of positioning the beams, the two transmission plates are close to each other so that the transmission column drives the clamping plate 2 to move synchronously and pull the main beam to fit the beam, so that the main beam and the beam in the processing area are located in the stable triangular area formed by the two clamping plates 1 and the corresponding clamping plate 2, so that the main beam and the beam continue to keep in close contact during welding, thereby improving the stability between the main beam and the beam during welding and avoiding the presence of a large gap at the welding position, which leads to a decrease in the connection strength between the main beam and the beam after welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0022] Figure 1 A three-dimensional structural schematic diagram of a heavy-duty vehicle chassis auxiliary welding device, a main beam and a cross beam provided according to an embodiment of the present invention is shown.

[0023] Figure 2 A partial cross-sectional view of the three-dimensional structure of a limiting group 1, a transmission group 1 and a clamping group 1 provided according to an embodiment of the present invention is shown.

[0024] Figure 3 The embodiment provided according to the present invention shows Figure 2 A magnified view of the structure in the middle.

[0025] Figure 4 A schematic diagram of the three-dimensional structure of a sliding rod, a sliding plate and a fixing rod provided according to an embodiment of the present invention is shown.

[0026] Figure 5 A partial cross-sectional view of the three-dimensional structure of a U-shaped plate, a U-shaped bar and a transmission bar provided according to an embodiment of the present invention is shown.

[0027] Figure 6 A partial cross-sectional view of the three-dimensional structure of a limit block, a placement groove and a vertical rod provided according to an embodiment of the present invention is shown.

[0028] Figure 7 A partial cross-sectional view of the three-dimensional structure of a through slot, a main beam and a cross beam provided according to an embodiment of the present invention is shown.

[0029] Figure 8 A schematic diagram of a three-dimensional structure in which a main beam and a cross beam are welded according to an embodiment of the present invention is shown.

[0030] The above drawings include the following reference numerals:

[0031] 1. Bottom plate; 2. U-shaped plate; 3. Sliding groove; 30. Sliding block; 300. Sliding rod; 301. Longitudinal plate; 302. Through groove; 4. Clamping mechanism; 40. Lower pressure bar; 41. Clamping group 1; 410. Clamping bar; 411. Clamping plate 1; 412. Pulling bar; 413. Lower pressure plate; 414. Spring 2; 43. Fixed rod; 44. Positioning group; 440. Positioning plate; 441. Positioning hole; 442. Positioning pin; 45. Clamping group 2; 450. Transmission plate; 451. Transmission groove; 452. Moving bar; 453. Clamping plate 2; 454. Moving plate; 455. Transmission Column; 456, spring three; 5, auxiliary mechanism; 51, limit group one; 510, sliding plate; 511, tightening plate; 512, pushing plate; 513, connecting strip; 514, spring one; 515, fixed plate; 52, limit group two; 520, placement slot; 521, limit block; 522, spring four; 53, transmission group one; 530, L-shaped strip; 531, pushing strip; 532, pulling rod; 533, vertical rod; 534, spring five; 54, transmission group two; 540, U-shaped strip; 541, pushing block one; 542, transmission strip; 543, pushing block two; 544, fixed block. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0033] like Figure 1 , Figure 2 and Figure 7 As shown, a heavy-duty vehicle chassis auxiliary welding device comprises:

[0034] A bottom plate 1, wherein a U-shaped plate 2 with an opening facing downward is fixedly provided on the upper end surface of the bottom plate 1, a sliding groove 3 extending in the left-right direction is penetrated through the upper end surface of the U-shaped plate 2, a slider 30 is slidably provided in the sliding groove 3, the slider 30 is driven by an external hydraulic cylinder 1 (not shown in the figure) to move left and right, a sliding rod 300 with an axis extending from top to bottom is slidably penetrated on the slider 30, the sliding rod 300 is driven by an external hydraulic cylinder 2 (not shown in the figure) to move up and down, a longitudinal plate 301 is fixedly provided on the lower end surface of the sliding rod 300, and two through grooves 302 extending from left to right are penetrated through the bottom plate 1, and the two through grooves 302 are symmetrical front to back.

[0035] The clamping mechanism 4 is provided on the longitudinal plate 301 for clamping the cross beam, and an auxiliary mechanism 5 for limiting the welding position of the cross beam is provided between the bottom plate 1 and the U-shaped plate 2. The auxiliary mechanism 5 includes a limit group 1 51 for limiting the position of the main beam, and the auxiliary mechanism 5 includes a limit group 2 52 for limiting the rightward movement distance of the slider 30.

[0036] like Figure 1 , Figure 2 and Figure 3 As shown, the clamping mechanism 4 includes a lower pressure strip 40, and the upper end surface of the longitudinal plate 301 slides up and down and penetrates two lower pressure strips 40 that are symmetrically distributed front and back. A clamping group 41 for clamping the crossbeam is jointly arranged between the lower pressure strip 40 and the longitudinal plate 301. The left end surface of the longitudinal plate 301 is fixedly provided with two fixing rods 43 with two axes extending from left to right and symmetrically distributed front and back, and a positioning group 44 is arranged on the fixing rod 43. The clamping mechanism 4 includes a clamping group 2 45 for pulling the main beam close to the crossbeam.

[0037] During work, the staff uses existing lifting equipment (such as cranes, hoists, etc.) to place the two main beams on the upper end surface of the bottom plate 1, and then the limit group 1 51 works to limit the left and right sections of the two main beams so that the two main beams are parallel to each other. Then the staff uses the lifting equipment to place the crossbeam between the two main beams, and the external hydraulic cylinder 1 works to push the slider 30 to move to the right, and then the limit group 2 52 is used to prevent the slider 30 from continuing to move to the right. The external hydraulic cylinder 2 works to drive the clamping group 1 41 to move downward through the longitudinal plate 301. During the downward pressing process, the clamping group 1 41 clamps and limits the crossbeam, while the clamping group 2 45 works to pull the main beams on both sides of the crossbeam to fit tightly to the middle. The staff then uses existing welding equipment (such as a welding gun) to weld the main beam and the crossbeam. After completing the welding of the first crossbeam, the longitudinal plate 301 moves upward to reset. Then, the external hydraulic cylinder 1 works to push the slider 30 to move right until the limit group 1 51 stops the slider 30 from continuing to move right. Then, the external hydraulic cylinder 2 works to drive the longitudinal plate 301 to move downward. At the same time, the external hydraulic cylinder 2 works to drive the longitudinal plate 301 to move left. During the movement of the longitudinal plate 301 to the left, the positioning of the longitudinal plate 301 is completed through the cooperation between the positioning group 44 and the welded crossbeam. Then, the positioning welding of the crossbeam and the main beam is repeated many times until the welding process of the chassis is completed.

[0038] like Figure 2 and Figure 7 As shown, a limit group 51 is provided on the upper end surface of the base plate 1, and the limit group 51 includes a sliding plate 510. Two sliding plates 510 are symmetrically arranged on the upper end surface of the base plate 1 and are located between the two vertical sections of the U-shaped plate 2, and the sliding plates 510 are driven to move left and right by an external hydraulic cylinder 3 (not shown in the figure). Two retaining plates 511 are symmetrically arranged on the base plate 1 and are located between the two sliding plates 510. The opposite surfaces of the two retaining plates 511 are symmetrically arranged on the two horizontal bars and are slid forward and backward through two horizontal bars. Two pushing plates 512 are symmetrically arranged on the opposite surfaces of the two retaining plates 511. A connecting bar 513 is hingedly connected between the horizontal bar and the corresponding sliding plate 510. A spring 514 is fixedly arranged between the retaining plate 511 and the corresponding sliding plate 510. Four fixed plates 515 distributed in a matrix are fixedly arranged on the upper end surface of the base plate 1.

[0039] During operation, the staff uses existing lifting equipment such as cranes to place the two main beams between the two abutting plates 511 on the bottom plate 1, and makes the left and right sections of the main beams respectively located between the corresponding pushing plates 512 and the fixed plates 515. Then the external hydraulic cylinder 3 works to push the two sliding plates 510 closer to each other. The movement of the sliding plates 510 causes the corresponding springs 1 514 to be compressed and deformed. The elastic force of the deformation of the springs 1 514 pushes the corresponding abutting plates 511 to move synchronously. The abutting plates 511 drive the corresponding two pushing plates 512 to move synchronously until the abutting plates 511 contact the two main beams. Then, the main beams prevent the abutting plates 511 from continuing to move, and the sliding plates 510 from continuing to move. The distance between the sliding plates 510 and the corresponding abutting plates 511 is shortened. The connecting strip 513 pushes the corresponding pushing plate 512 to move, and the two front and rear opposing pushing plates 512 move away from each other. The pushing plate 512 moves to contact with the main beam and continues to move. The pushing plate 512 pushes the two front and rear opposing main beams to move away from each other until the two main beams are both close to the corresponding fixing plates 515, completing the limitation of the main beam in the front and rear directions, so that the position of the two pushing plates 512 and the corresponding clamping plates 511 is fixed, thereby fixing the position of the sliding plate 510 and the clamping plate 511, and then the sliding plate 510 continues to push the clamping plate 511 to move, and the limitation of the main beam is completed through the cooperation between the two left and right opposing clamping plates 511, so that the two main beams are parallel to each other, and the distance between the two main beams is equal everywhere.

[0040] like Figure 2 , Figure 3 and Figure 4 As shown, the clamping group 41 includes a clamping bar 410, and the upper end surface of the longitudinal plate 301 slides left and right and penetrates two left-right symmetrical clamping bars 410, and the two clamping bars 410 are respectively located on the left and right sides of the corresponding lower pressure bar 40, and the lower end surface of the clamping bar 410 is fixedly provided with a clamping plate 411 for clamping the crossbeam, and the two clamping bars 410 and the corresponding lower pressure bars 40 are hingedly connected to a pulling bar 412, and the lower end surfaces of the two lower pressure bars 40 are fixedly provided with a lower pressure plate 413, and a spring 2 414 is fixedly provided between the lower pressure plate 413 and the longitudinal plate 301.

[0041] like Figure 2 , Figure 3 and Figure 4As shown, a clamping group 2 45 is commonly provided between the two clamping bars 410 and the longitudinal plate 301, and the clamping group 2 45 includes a transmission plate 450, and the transmission plates 450 are fixedly provided on the opposite back surfaces of the two left and right opposite clamping bars 410 through a horizontal plate, and the two left and right opposite transmission plates 450 are staggered up and down, and a transmission groove 451 is penetrated through a section of the transmission plate 450 away from the clamping bar 410, and a moving bar 452 is slidably provided on the longitudinal plate 301, and the two moving bars 452 are symmetrical front and back, and a clamping plate 2 453 for pulling the main beam is fixedly provided on the lower end surface of the moving bar 452, and a moving plate 454 is fixedly provided on the opposite surfaces of the two moving bars 452, and a longitudinal groove extending backward is provided on the upper end surface of the moving plate 454, and a transmission column 455 is slidably provided in the longitudinal groove through a moving block, and the transmission column 455 is simultaneously located in the corresponding two transmission grooves 451, and a spring 3 456 is commonly fixedly provided between the moving block and the inner wall of the longitudinal groove.

[0042] During operation, after completing the limit clamping of the two main beams, the staff uses the lifting equipment to place the cross beam at the welding position between the two main beams. The external hydraulic cylinder 1 drives the sliding rod 300 to move rightward to the working position through the slider 30. The external hydraulic cylinder 2 drives the longitudinal plate 301 to move downward through the sliding rod 300. The longitudinal plate 301 drives the clamping group 1 41 and the clamping group 2 45 to move downward synchronously. After the lower pressure plate 413 moves downward to contact with the cross beam, the cross beam prevents the lower pressure plate 413 from continuing to move downward. The longitudinal plate 301 continues to drive the clamping bar 410 to move downward, the spring 2 414 is compressed and deformed, and the longitudinal plate 301 continues to move, so that the distance between the lower pressure bar 40 and the two corresponding clamping bars 410 increases, thereby pulling the corresponding clamping bar 410 to move through the pulling bar 412, so that the two clamping bars 410 opposite to each other on the left and right are close to each other, and the clamping bar 410 drives the corresponding clamping plate 1 411 to move synchronously until the two clamping plates 1 411 opposite to each other on the left and right are both close to the beam, completing the limitation of the beam in the left and right directions.

[0043] When the two clamping bars 410 opposite to each other on the left and right are close to each other, the clamping bars 410 drive the transmission plate 450 to move synchronously through the horizontal plate, so that the two transmission plates 450 opposite to each other on the left and right are close to each other, and the two transmission columns 455 opposite to each other on the front and back are close to each other through the cooperation between the inner walls of the two transmission grooves 451 and the corresponding transmission columns 455, and the transmission columns 455 drive the corresponding moving blocks to move synchronously, and the movement of the moving blocks causes the spring three 456 to be stretched and deformed, and the elastic force generated by the deformation of the spring three 456 pulls the moving plate 454 and the transmission column 455 to move synchronously through the inner wall of the longitudinal groove, and the moving plate 454 drives the clamping plate two 453 to move synchronously through the moving bar 452, and the two clamping plates two 453 opposite to each other on the front and back are close to each other, and the two clamping plates two 453 move After moving to be close to the corresponding main beam, the clamping plate 2 453 stops moving, the transmission column 455 continues to move, and the spring 3 456 is continuously stretched and deformed until the clamping group 1 41 completes the clamping limit of the crossbeam, and the elastic force generated by the deformation of the spring 3 456 acts on the main beam through the corresponding clamping plate 2 453. The two clamping plates 2 453 respectively push the corresponding main beam to be close to the crossbeam, avoiding a large gap between the main beam and the crossbeam during the welding process, which results in a lower strength at the connection position between the main beam and the crossbeam after welding. Afterwards, the staff uses the existing welding equipment to weld the upper end face and the left and right end faces of the contact position between the main beam and the crossbeam, and finally passes the welding equipment through the through slot 302 from below to weld the lower end face of the contact position between the main beam and the crossbeam.

[0044] like Figure 5 and Figure 6 As shown, a second limiting group 52 is provided on the upper end surface of the U-shaped plate 2, and the second limiting group 52 includes a placement groove 520. A plurality of placement grooves 520 distributed at equal intervals are opened on the front inner wall of the sliding groove 3. A limiting block 521 is provided in the placement groove 520 for sliding back and forth. The limiting block 521 is a right-angled trapezoid with an inclined surface facing the right side, and its inclined surface is inclined forward from left to right. A spring four 522 is fixedly provided between the limiting block 521 and the inner wall of the placement groove 520.

[0045] like Figure 2 , Figure 5 and Figure 6As shown, a transmission group 53 is provided on the upper end surface of the U-shaped plate 2, and the transmission group 53 includes an L-shaped bar 530. A plurality of L-shaped bars 530 corresponding to the positions of the limit blocks 521 are slidably provided on the upper end surface of the horizontal section of the U-shaped plate 2. A pushing bar 531 is fixedly provided on the lower end surface of the right section of the transverse section of the L-shaped bar 530. The pushing bar 531 is a right-angled triangle with an inclined surface facing the left side, and its inclined surface is inclined forward from left to right. A pulling rod 532 with an axis extending from front to rear is slidably provided on the lower end surface of the left section of the transverse section of the L-shaped bar 530 through a connecting plate. The rear end surface of the pulling rod 532 is an inclined surface, and the inclined surface is inclined backward from left to right. A vertical rod 533 with an axis extending from top to bottom is fixedly provided on the front end surface of the pulling rod 532 through a square plate. A spring 534 mounted on the corresponding pulling rod 532 is fixedly provided between the connecting plate and the square plate.

[0046] like Figure 2 and Figure 4 As shown, the positioning group 44 includes a positioning plate 440, and the two fixing rods 43 are both provided with positioning plates 440 for sliding left and right. The fixing rods 43 are penetrated by a plurality of positioning holes 441 with axes extending from top to bottom and equidistantly distributed from left to right. The positioning plate 440 is provided with latch holes, and a positioning pin 442 is inserted into each latch hole and the positioning hole 441 at the corresponding position.

[0047] During operation, the worker adjusts the distance between the positioning plate 440 and the longitudinal plate 301 according to the required interval between two adjacent beams, and inserts the positioning pin 442 into the pin hole and the corresponding positioning hole 441 to fix the positioning plate 440 with the corresponding fixing rod 43. After the welding process of the first beam is completed, the external hydraulic cylinder 1 works to push the slider 30 to move to the right. After the slider 30 moves to contact with the limit block 521, the limit block 521 prevents the slider 30 from continuing to move to the right, so that the longitudinal plate 301 is located in the specified area above the unwelded beam on the right side of the welded beam, thereby making the clamping group 4 1 is located in the designated area above the unwelded beam (it should be noted that when the longitudinal plate 301 and the unwelded beam are located in the designated area, the distance between the unwelded beam and the above-mentioned welded beam is within the designated range, and the positioning plate 440 is located on the right side of the above-mentioned welded beam, which is convenient for the subsequent positioning plate 440 to press against the welded beam for the distance determination operation, and avoids the longitudinal plate 301 driving the unwelded beam and the positioning plate 440 to move too far, resulting in the inability to perform the distance determination operation). Subsequently, through the cooperation between the positioning group 44 and the clamping group 41, the unwelded beam is located at the designated position on the right side of the welded beam.

[0048] After the limit block 521 stops the slider 3 from moving, the external hydraulic cylinder 2 works to drive the longitudinal plate 301 to move downward through the sliding rod 300, and the longitudinal plate 301 drives the two positioning plates 440 to move downward synchronously through the two fixing rods 43. After the positioning plates 440 move to the area where there is an intersection with the welded beam, the external hydraulic cylinder 1 works to push the slider 30 to move left, and the positioning plates 440 move left to contact the welded beam, and the positioning plates 440 are prevented from continuing to move left through the welded beam, so that the interval between the welded beam and the unwelded beam is a specified distance, and then the external hydraulic cylinder Second, continue to push the longitudinal plate 301 downward until the clamping group 41 completes the limiting clamping of the beam, and the unwelded beam is specifically limited by the cooperation between the clamping group 41 and the positioning group 44, so that the unwelded beam is located at the specified position on the right side of the welded beam, and then repeat the welding steps. In the above steps, the position of the longitudinal plate 301 is limited by the cooperation between the welded beam and the positioning plate 440, so that the interval between the subsequent welded beam and the welded beam is equal, and at the same time, the cooperation between the two positioning plates 440 makes the unwelded beam and the welded beam parallel to each other.

[0049] During the movement of the slider 30 to the right, the slider 30 pushes the pulling rod 532 to move forward through the cooperation between the slider 30 and the inclined surface of the pulling rod 532, thereby preventing the pulling rod 532 from hindering the slider 30 from moving to the right. The slider 30 drives the square plate to move forward synchronously, and the movement of the square plate causes the corresponding spring five 534 to be stretched and deformed. During the movement of the slider 30 to the left, the slider 30 moves to the left until it contacts the pulling rod 532 and pushes the pulling rod 532 to move to the left synchronously. The pulling rod 532 drives the L-shaped bar 530 to move to the left synchronously through the connecting plate, and the L-shaped bar 530 drives the pushing bar 531 to move synchronously. Through the shape cooperation between the inclined surface of the pushing bar 531 and the limit block 521, the pushing bar 531 pushes the limit block 521 to move forward until it is completely moved into the placement groove 520, and the spring four 522 is compressed and deformed, thereby preventing the limit block 521 from preventing the slider 30 from moving to the left after the processing is completed.

[0050] like Figure 2 and Figure 5As shown, the upper end surface of the horizontal section of the U-shaped plate 2 is provided with a transmission group 2 54, and the transmission group includes a U-shaped bar 540. The upper end surface of the horizontal section of the U-shaped plate 2 is slidably provided with a U-shaped bar 540 with an opening facing the rear side, and the front end surface of the transverse section of the U-shaped bar 540 is fixedly provided with a plurality of equally distributed push blocks 1 541, and the push block 1 541 is a right-angled trapezoid with an inclined surface facing the right side, and its inclined surface is inclined backward from left to right, and the ... U-shaped bar 540 is fixedly provided with a plurality of equally distributed push blocks 1 541, and the push block 1 541 is a right-angled trapezoid with an inclined surface facing the right side, and its inclined surface is inclined backward from left to right, and the upper end surface of the horizontal section of the U-shaped plate 2 is slidably provided with a U-shaped bar 540 with an opening facing the rear side, and the U-shaped bar 540 is fixedly provided with a U-shaped bar 540 with an opening facing the rear side, and the U-shaped bar 540 is fixedly provided with a U-shaped bar 540 with an opening facing the rear side, and the U-shaped bar There is a transmission bar 542 located between the vertical rod 533 and the U-shaped bar 540. The rear end face of the transmission bar 542 is fixedly provided with a plurality of push blocks 543 that are evenly distributed from left to right and cooperate with the push block 1 541. The push block 2 543 is a right-angled trapezoid with an inclined surface facing the left side, and its inclined surface is inclined backward from left to right. The rear end face of the transverse section of the U-shaped bar 540 is fixedly provided with a plurality of fixed blocks 544 that are evenly distributed from left to right and cooperate with the corresponding longitudinal sections of the L-shaped bar 530.

[0051] During operation, after the welding of all beams is completed, the external hydraulic cylinder 1 continues to push the slider 30 to move to the right. After the slider 30 moves to contact the right vertical section of the U-shaped bar 540, the slider 30 pushes the U-shaped bar 540 to move to the right, and the U-shaped bar 540 drives all the fixed blocks 544 to move to the right synchronously. During the movement of the fixed blocks 544, the fixed blocks 544 cooperate with the longitudinal sections of the corresponding L-shaped bars 530, so that the fixed blocks 544 pull the corresponding L-shaped bars 530 to move to the right, and the movement of the L-shaped bars 530 drives the pushing bars 531 to move to the right synchronously. After the pushing bars 531 move to disengage from the corresponding limit blocks 521, the spring 2 414 is deformed. The elastic force generated pushes the limit block 521 to move forward and reset. At the same time, the U-shaped bar 540 drives all the push blocks 1 541 to move to the right. Through the shape coordination between the inclined surface of the push block 1 541 and the inclined surface of the push block 2 543, the push block 1 541 pushes the transmission bar 542 to move forward through the push block 2 543. The movement of the transmission bar 542 drives all the vertical rods 533 to move forward synchronously. The vertical rod 533 pulls the corresponding pulling rod 532 to move synchronously through the square plate. The movement of the square plate causes the corresponding spring three 456 to be stretched and deformed, and the pulling rod 532 is pulled forward through the square plate to prevent the pulling rod 532 from preventing the slider 30 from moving left and resetting.

[0052] After the slider 30 moves to the rightmost end of the sliding slot 3, the external hydraulic cylinder 1 works to push the slider 30 to move left. After the slider 30 moves left and contacts the inclined surface of the limit block 521, the shape cooperation between the slider 30 and the inclined surface of the limit block 521 enables the slider 30 to push the limit block 521 to move forward. The movement of the limit block 521 causes the spring four 522 to be compressed and deformed. After the slider 30 moves to disengage from the limit block 521, the elastic force generated by the deformation of the spring four 522 pushes the limit block 521 to move forward and reset. After the slider 30 moves to contact the left vertical section of the U-shaped bar 540, the slider 30 pushes the U-shaped bar 540 to move left. After the U-shaped bar 540 drives the push block 1 541 to disengage from the corresponding push block 2 543, the elastic force generated by the deformation of each spring five 534 pulls the transmission bar 542 forward and resets through the corresponding vertical rod 533.

[0053] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0054] In addition, the terms "first", "second", "number one", "number two" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", "number one", "number two" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0055] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A heavy-duty vehicle chassis auxiliary welding device, characterized in that: include: A bottom plate (1), wherein a U-shaped plate (2) with an opening facing downward is fixedly arranged on the upper end surface of the bottom plate (1), a sliding groove (3) extending in the left-right direction is penetrated through the upper end surface of the U-shaped plate (2), a sliding block (30) is slidably arranged in the sliding groove (3), a sliding rod (300) with an axis extending from top to bottom is slidably penetrated through the sliding block (30), a longitudinal plate (301) is fixedly arranged on the lower end surface of the sliding rod (300), and two through grooves (302) extending from left to right are penetrated through the bottom plate (1), and the two through grooves (302) are symmetrical front to back; A clamping mechanism (4), wherein the longitudinal plate (301) is provided with a clamping mechanism (4) for clamping the cross beam, and an auxiliary mechanism (5) for limiting the welding position of the cross beam is provided between the bottom plate (1) and the U-shaped plate (2), wherein the auxiliary mechanism (5) comprises a first limiting group (51) for limiting the position of the main beam, and the auxiliary mechanism (5) comprises a second limiting group (52) for limiting the rightward movement distance of the slider (30); The clamping mechanism (4) comprises a lower pressure strip (40), the upper end surface of the longitudinal plate (301) slides up and down and penetrates two lower pressure strips (40) symmetrically distributed front and back, a clamping group (41) for clamping the cross beam is arranged between the lower pressure strip (40) and the longitudinal plate (301), two fixing rods (43) with axes extending from left to right and symmetrically distributed front and back are fixedly arranged on the left end surface of the longitudinal plate (301), and a positioning group (44) is arranged on the fixing rod (43), and the clamping mechanism (4) comprises a clamping group (45) for pulling the main beam to be close to the cross beam.

2. The heavy-duty vehicle chassis auxiliary welding device according to claim 1 is characterized in that: The upper end surface of the bottom plate (1) is provided with a limit group (51), the limit group (51) comprising a sliding plate (510), the upper end surface of the bottom plate (1) is provided with two sliding plates (510) symmetrically arranged on the left and right sides and located between the two vertical sections of the U-shaped plate (2), the bottom plate (1) is provided with two abutting plates (511) symmetrically arranged on the left and right sides and located between the two sliding plates (510), the opposite surfaces of the two abutting plates (511) are provided with two pushing plates (512) symmetrically arranged on the front and back sides through two horizontal bars for sliding back and forth, the horizontal bars and the corresponding sliding plates (510) are hingedly connected with a connecting bar (513), the abutting plates (511) and the corresponding sliding plates (510) are fixedly provided with a spring (514), and the upper end surface of the bottom plate (1) is fixedly provided with four fixed plates (515) distributed in a matrix.

3. The heavy-duty vehicle chassis auxiliary welding device according to claim 1 is characterized in that: The clamping group 1 (41) includes a clamping bar (410), and the upper end surface of the longitudinal plate (301) is slidably penetrated by two left-right symmetrical clamping bars (410), and the two clamping bars (410) are respectively located on the left and right sides of the corresponding lower pressure bar (40), and the lower end surface of the clamping bar (410) is fixedly provided with a clamping plate 1 (411) for clamping the crossbeam, and the two clamping bars (410) and the corresponding lower pressure bars (40) are hingedly connected to a pulling bar (412), and the lower end surfaces of the two lower pressure bars (40) are fixedly provided with a lower pressure plate (413), and a spring 2 (414) is fixedly provided between the lower pressure plate (413) and the longitudinal plate (301).

4. The heavy-duty vehicle chassis auxiliary welding device according to claim 3 is characterized in that: A clamping group 2 (45) is commonly provided between the two clamping strips (410) and the longitudinal plate (301), and the clamping group 2 (45) includes a transmission plate (450). The rear surfaces of the two left and right opposite clamping strips (410) are fixed with transmission plates (450) through a horizontal plate, and the two left and right opposite transmission plates (450) are staggered up and down, and a transmission groove (451) is provided through a section of the transmission plate (450) away from the clamping strip (410), and a moving strip (452) is provided on the longitudinal plate (301) for sliding back and forth. The two moving bars (452) are symmetrical front to back, a clamping plate (453) for pulling the main beam is fixedly arranged on the lower end surface of the moving bar (452), a moving plate (454) is fixedly arranged on the opposite surfaces of the two moving bars (452), a longitudinal groove extending backward is opened on the upper end surface of the moving plate (454), a transmission column (455) is slidably arranged in the longitudinal groove through a moving block, and the transmission column (455) is simultaneously located in the corresponding two transmission grooves (451), and a spring (456) is fixedly arranged between the moving block and the inner wall of the longitudinal groove.

5. The heavy-duty vehicle chassis auxiliary welding device according to claim 1 is characterized in that: A second limiting group (52) is provided on the upper end surface of the horizontal section of the U-shaped plate (2), and the second limiting group (52) includes a placement groove (520). A plurality of placement grooves (520) distributed at equal intervals are provided on the front inner wall of the sliding groove (3). A limiting block (521) is provided in the placement groove (520) for sliding back and forth. The limiting block (521) is a right-angled trapezoid with an inclined surface facing the right side, and its inclined surface is inclined forward from left to right. A fourth spring (522) is fixedly provided between the limiting block (521) and the inner wall of the placement groove (520).

6. The heavy-duty vehicle chassis auxiliary welding device according to claim 1, characterized in that: The upper end surface of the horizontal section of the U-shaped plate (2) is provided with a transmission group (53), and the transmission group (53) includes an L-shaped bar (530). The upper end surface of the horizontal section of the U-shaped plate (2) is slidably provided with a plurality of L-shaped bars (530) corresponding to the positions of the limit blocks (521). The lower end surface of the right section of the transverse section of the L-shaped bar (530) is fixedly provided with a push bar (531). The push bar (531) is a right triangle with an inclined surface facing the left side, and its inclined surface is from left to right. The lower end face of the left section of the transverse section of the L-shaped strip (530) is slidably provided with a pulling rod (532) with an axis extending from front to rear through a connecting plate, the rear end face of the pulling rod (532) is an inclined surface, and the inclined surface is inclined backward from left to right, the front end face of the pulling rod (532) is fixedly provided with a vertical rod (533) with an axis extending from top to bottom through a square plate, and a spring five (534) mounted on the corresponding pulling rod (532) is fixedly provided between the connecting plate and the square plate.

7. The heavy-duty vehicle chassis auxiliary welding device according to claim 1, characterized in that: The positioning group (44) comprises a positioning plate (440), and the two fixing rods (43) are both provided with a positioning plate (440) for sliding left and right. The fixing rods (43) are provided with a plurality of positioning holes (441) extending from top to bottom and equidistantly distributed from left to right. The positioning plate (440) is provided with a latch hole, and a positioning pin (442) is inserted into each latch hole and the positioning hole (441) at a corresponding position.

8. The heavy-duty vehicle chassis auxiliary welding device according to claim 1, characterized in that: The upper end surface of the horizontal section of the U-shaped plate (2) is provided with a transmission group 2 (54), and the transmission group includes a U-shaped bar (540). The upper end surface of the horizontal section of the U-shaped plate (2) is provided with a U-shaped bar (540) with an opening facing the rear side, and the front end surface of the transverse section of the U-shaped bar (540) is fixedly provided with a plurality of equally spaced push blocks 1 (541). The push blocks 1 (541) are right-angled trapezoids with an inclined surface facing the right side, and the inclined surface is inclined backward from left to right. The upper end surface of the horizontal section of the U-shaped plate (2) is provided with a positioning block 1 (541) that slides back and forth. A transmission bar (542) is disposed between the vertical rod (533) and the U-shaped bar (540). The rear end face of the transmission bar (542) is fixedly provided with a plurality of push blocks (543) which are evenly distributed from left to right and cooperate with the push block (541). The push block (543) is a right-angled trapezoid with an inclined surface facing the left side, and its inclined surface is inclined backward from left to right. The rear end face of the transverse section of the U-shaped bar (540) is fixedly provided with a plurality of fixed blocks (544) which are evenly distributed from left to right and cooperate with the corresponding longitudinal section of the L-shaped bar (530).

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