Auxiliary welding device for heavy truck chassis

Abstract

The application relates to the field of auxiliary welding technology, in particular to a heavy-duty vehicle chassis auxiliary welding device which comprises a bottom plate, a clamping mechanism and an auxiliary mechanism. In the application, the cooperation between the limiting group one inner fixing plate and the push plate makes the two main beams be in the specified positions, the clamping and limiting of the left and right sections of the main beams make the two main beams be parallel to each other, the two clamping plates two pull the two main beams to be close to the front and back two end faces of the cross beam during the process of placing the cross beam, the distance between the two main beams is prevented from being too large to cause the main beam and the cross beam to be unable to be welded, the limiting group positions the cross beam which has been welded and the cross beam which has not been welded during the process of placing the cross beam, the interval between the two adjacent cross beams is equal, the interval between the two adjacent cross beams is prevented from being different, and the strength distribution of the vehicle frame after welding and processing is prevented from being uneven.

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 body, suspension chassis components, power system and other important components. The frame is the main framework of the heavy-duty vehicle chassis, which 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 a vehicle frame generally involves workers placing and fixing two main beams, and then welding multiple cross beams between the two main beams.

[0004] At present, there are the following problems in the welding processing technology of the vehicle frame: 1. In the existing technology, 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 designated 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 crossbeam during welding of the main beam and the crossbeam. 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 crossbeam. At the same time, it is easy for some parts of the two main beams to be too small, and the crossbeam needs to be deflected at a certain angle before welding the main beam and the crossbeam, 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 crossbeams 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, including:

[0008] The bottom plate has a U-shaped plate with an opening facing downward fixedly provided on its upper end surface, a sliding groove extending in the left and right directions is penetrated through the upper end surface of the U-shaped plate, a slider is slidably provided in the sliding groove, a sliding rod with an axis extending from top to bottom is slid through the slider, 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 crossbeam, and an auxiliary mechanism for limiting the welding position of the crossbeam is provided between the bottom plate and the U-shaped plate. The auxiliary mechanism includes a limiting group 1 for limiting the position of the main beam, and the auxiliary mechanism includes a limiting group 2 for limiting the right 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 passes through 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 fixed on the left end surface of the longitudinal plate. A positioning group is provided 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. The upper end surface of the base plate is provided with two sliding plates that are symmetrical left and right and are located between the two vertical sections of the U-shaped plate for sliding left and right. Two retaining plates that are symmetrical left and right and are located between the two sliding plates are provided on the base plate for sliding left and right. The opposite surfaces of the two retaining plates are provided with two front-to-back symmetrical pushing plates that slide back and forth through two horizontal bars. A connecting bar is hingedly connected between the horizontal bar and the corresponding sliding plate. A spring 1 is fixedly provided between the retaining 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 is penetrated by 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 plate, and the clamping group 2 includes a transmission plate, and the opposite back surfaces of the two left and right clamping bars are fixedly provided with transmission plates through a horizontal plate, and the two left and right transmission plates are staggered up and down, and a transmission groove is provided through a section of the transmission plate away from the clamping bar, and a moving bar is provided on the longitudinal plate for sliding back and forth, and the two moving bars are symmetrical front and back, and a clamping plate 2 for pulling the main beam is fixedly provided on the lower end surface of the moving bar, and a moving plate is fixedly provided on the opposite surfaces of the two moving bars, and a longitudinal groove extending backward is provided on the upper end surface of the moving plate, and a transmission column is provided in the longitudinal groove through a moving block for sliding, 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 second limiting group is provided on the upper end surface of the U-shaped plate, and the second limiting group includes a placement groove. A plurality of equally distributed 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 four is fixed between the limiting block and the inner wall of the placement groove.

[0015] According to a preferred embodiment, the upper end surface of the U-shaped plate is provided with a transmission group 1, and the transmission group 1 includes an L-shaped bar, and the upper end surface of the horizontal section of the U-shaped plate is slidingly provided with a plurality of L-shaped bars corresponding to the positions of the limit blocks, and the lower end surface of the right section of the transverse section of the L-shaped bar is fixedly provided with a pushing bar, and 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. The lower end surface of the left section of the transverse section of the L-shaped bar is slidingly provided with a pulling rod with an axis extending from front to rear 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, and the front end surface of the pulling rod is fixedly provided with a vertical rod with an axis extending from top to bottom 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 a positioning plate is provided on each of the two fixed rods 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 a pin hole, and a positioning pin is inserted into each pin hole and the positioning hole at the corresponding position.

[0017] The upper end surface of the horizontal section of the U-shaped plate is provided with a transmission group 2, and the transmission group includes a U-shaped bar, and the upper end surface of the horizontal section of the U-shaped plate is slidable left and right and is 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 from left to right backward, and the upper end surface of the horizontal section of the U-shaped plate is slidable back and forth and is 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 equidistantly 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 from left to right backward, 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 equidistantly 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 placed in specified positions through the cooperation between the internal fixing plate and the pushing plate of the limiting group 1, and the two main beams are made parallel to each other by clamping and limiting 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 main beams and the crossbeams being unable to be welded due to the large distance between the two main beams. In the process of placing the crossbeams, the welded crossbeams and the unwelded crossbeams are limited by the positioning group, 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 specified 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, forming a rectangular area between them, thereby avoiding the situation where the distance 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 beam, which leads to a reduction in the load-bearing capacity of the frame after processing. During the placement of the cross beam, the two main beams are pulled close to the cross beam by the clamping plate 2, thereby avoiding the situation where the distance between the two main beams is too large and the main beams and the cross beam cannot be welded.

[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 beam, the two transmission plates approach each other so that the transmission column drives the clamping plate 2 to move synchronously and pull the main beam close to 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 close together during welding, thereby improving the stability between the main beam and the beam during welding and avoiding the presence of large gaps in 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 following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0022] Figure 1 A schematic diagram of the three-dimensional structure 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 the limiting group 1, the transmission group 1 and the clamping group 1 provided according to an embodiment of the present invention is shown.

[0024] Figure 3 The embodiment of the present invention provides 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 fixed 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 limiting 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 the through slot, main beam and 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] Among them, the above drawings include the following figure marks.

[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. Fixing 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, pressing 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] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

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

[0034] The bottom plate 1 has a U-shaped plate 2 with an opening facing downward fixedly provided on its upper end surface, and a sliding groove 3 extending in the left and right directions is penetrated through the upper end surface of the U-shaped plate 2, and a slider 30 is slidingly provided in the sliding groove 3, and the slider 30 is driven to move left and right by an external hydraulic cylinder 1 (not shown in the figure), and a sliding rod 300 with an axis extending from top to bottom is slid through the slider 30, and the sliding rod 300 is driven to move up and down by an external hydraulic cylinder 2 (not shown in the figure), and 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 crossbeam, and an auxiliary mechanism 5 for limiting the welding position of the crossbeam is provided between the bottom plate 1 and the U-shaped plate 2. The auxiliary mechanism 5 includes a limiting group 1 51 for limiting the position of the main beam, and the auxiliary mechanism 5 includes a limiting 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 bar 40, and the upper end surface of the longitudinal plate 301 slides up and down and passes through two lower pressure bars 40 that are symmetrically distributed front to back. A clamping group 1 41 for clamping the crossbeam is provided between the lower pressure bar 40 and the longitudinal plate 301. The left end surface of the longitudinal plate 301 is fixed with two fixing rods 43 with two axes extending from left to right and symmetrically distributed front to back. A positioning group 44 is provided 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 base 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 the middle and close to it. 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 and resets. 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. After that, 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 completed 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. The upper end surface of the base plate 1 is provided with two sliding plates 510 that are symmetrical on the left and right and are located between the two vertical sections of the U-shaped plate 2. The sliding plate 510 is driven to move left and right by an external hydraulic cylinder three (not shown in the figure). Two retaining plates 511 that are symmetrical on the left and right and are located between the two sliding plates 510 are provided on the base plate 1 for sliding left and right. The opposite surfaces of the two retaining plates 511 are provided with two front-to-back symmetrical pushing plates 512 that slide back and forth through two horizontal bars. A connecting bar 513 is hingedly connected between the horizontal bar and the corresponding sliding plate 510. A spring 514 is fixedly provided between the retaining plate 511 and the corresponding sliding plate 510. Four fixed plates 515 distributed in a matrix are fixedly provided on the upper end surface of the base plate 1.

[0039] During operation, the staff use existing lifting equipment such as cranes and hoists to place the two main beams between the two clamping plates 511 on the bottom plate 1, and make the left and right sections of the main beam 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 plate 510 causes the corresponding spring 1 514 to be compressed and deformed. The elastic force of the deformation of the spring 1 514 pushes the corresponding clamping plate 511 to move synchronously. The clamping plate 511 drives the corresponding two pushing plates 512 to move synchronously until the clamping plate 511 contacts the two main beams. Then the main beams prevent the clamping plate 511 from continuing to move, and the sliding plate 510 continues to move. The distance between the sliding plate 510 and the corresponding clamping plate 511 is shortened. The connecting bar 513 pushes the corresponding pushing plate 512 to move, and the two pushing plates 512 opposite to each other 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 main beams opposite to each other and away from each other until the two main beams are close to the corresponding fixing plate 515, completing the limitation of the main beam in the front and rear directions, so that the position between the two pushing plates 512 and the corresponding clamping plates 511 is fixed, thereby fixing the position between 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 clamping plates 511 opposite to each other, 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 is 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 411 for clamping the beam, and the two clamping bars 410 and the corresponding lower pressure bars 40 are hingedly connected to the 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, two said clamping strips 410 and longitudinal plate 301 are jointly provided with clamping group two 45, said clamping group two 45 comprises transmission plate 450, the opposite side of two left and right clamping strips 410 is fixedly provided with transmission plate 450 through horizontal plate, and the left and right two transmission plates 450 are staggered upward and downward, a section of transmission plate 450 away from clamping strip 410 is provided with transmission groove 451, and the longitudinal plate 301 is provided with moving strip 452 which slides forward and backward, and two moving strips 452 are symmetrically forward and backward, the lower end surface of moving strip 452 is fixedly provided with clamping plate two 453 for pulling main beam, the opposite surface of two moving strips 452 is fixedly provided with moving plate 454, the upper end surface of moving plate 454 is provided with longitudinal groove which extends rearward, the transmission column 455 is slidably arranged in the longitudinal groove through the moving block, and the transmission column 455 is simultaneously located in the corresponding two transmission grooves 451, and the spring three 456 is fixedly arranged between the moving block and the inner wall of the longitudinal groove.

[0042] When working, after completing the limiting and clamping of two main beams, the work personnel places the cross beam at the welding position between the two main beams through the hoisting equipment, the outer hydraulic cylinder one works to drive the sliding block 30 to move right to the working position, the outer hydraulic cylinder two works to drive the longitudinal plate 301 to move downward through the sliding rod 300, the longitudinal plate 301 drives clamping group one 41 and clamping group two 45 to move downward synchronously, the pressing plate 413 moves downward to contact the cross beam, the cross beam prevents the pressing plate 413 from continuing to move downward, the longitudinal plate 301 continues to drive the clamping strip 410 to move downward, the spring two 414 is compressed and deformed, the longitudinal plate 301 continues to move to increase the distance between the pressing strip 40 and two corresponding clamping strips 410, so that the corresponding clamping strip 410 is moved by the pulling strip 412, the left and right two clamping strips 410 approach each other, the clamping strip 410 drives the corresponding clamping plate one 411 to move synchronously, until the left and right two clamping plates one 411 are tightly attached to the cross beam, and the limiting in the left and right direction of the cross beam is completed.

[0043] When the two clamping bars 410 opposite to each other are close to each other, the clamping bars 410 drive the transmission plates 450 to move synchronously through the horizontal plates, so that the two transmission plates 450 opposite to each other are close to each other. The inner walls of the two transmission grooves 451 cooperate with the corresponding transmission columns 455, so that the two transmission columns 455 opposite to each other are close to each other. The transmission columns 455 drive the corresponding moving blocks to move synchronously. The movement of the moving blocks causes the spring three 456 to be stretched and deformed. 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. The moving plate 454 drives the clamping plate 2 453 to move synchronously through the moving bar 452. The two clamping plates 2 453 opposite to each other are close to each other, and the two clamping plates 2 453 move After moving to be close to the corresponding main beam, the clamping plate 2 453 stops moving and 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. 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 of the connection position between the main beam and the crossbeam after welding. Afterwards, the staff uses 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 equally distributed placement grooves 520 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 spring four 522 is fixed between the limiting block 521 and the inner wall of the placement groove 520.

[0045] like Figure 2 、 Figure 5 and Figure 6As shown, the upper end surface 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 pushing bar 531. The pushing bar 531 is a right triangle with an inclined surface facing the left side, and its inclined surface is inclined forward from left to right. The lower end surface of the left section of the transverse section of the L-shaped bar 530 is slidably provided with a pulling rod 532 with an axis extending from front to rear 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. The front end surface 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. A spring 534 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 a positioning plate 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 a pin hole, and each pin hole and the positioning hole 441 at the corresponding position are both inserted with a positioning pin 442.

[0047] During operation, the staff adjusts the distance between the positioning plate 440 and the longitudinal plate 301 according to the required interval between the two adjacent beams, and fixes the positioning plate 440 to the corresponding fixing rod 43 by inserting the positioning pin 442 into the pin hole and the corresponding positioning hole 441. After the welding process of the first beam is completed, the external hydraulic cylinder works to push the slider 30 to the right. After the slider 30 moves to contact 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 facilitates the subsequent positioning plate 440 to press against the welded beam for distance determination, 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), and 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] The limiting block 521 prevents the slider 3 from moving, and the outer hydraulic cylinder two works to drive the longitudinal plate 301 to move downward through the sliding rod 300. The longitudinal plate 301 drives the two positioning plates 440 to move downward synchronously through the two fixed rods 43. After the positioning plates 440 move to the area where the cross beams that have been welded are staggered with each other, the outer hydraulic cylinder one works to drive the slider 30 to move leftward. The positioning plates 440 move leftward to contact the cross beams that have been welded. The cross beams that have been welded prevent the positioning plates 440 from continuing to move leftward, so that the cross beams that have been welded are separated from the cross beams that have not been welded by a specified distance. Then the outer hydraulic cylinder two continues to drive the longitudinal plate 301 to move downward until the clamping group one 41 limits and clamps the cross beams. The cross beams that have not been welded are specifically limited by the cooperation between the clamping group one 41 and the positioning group 44, so that the cross beams that have not been welded are located at a specified position on the right side of the cross beams that have been welded. Then the welding step is repeated. In the above steps, the position of the longitudinal plate 301 is limited by the cooperation between the cross beams that have been welded and processed and the positioning plates 440, so that the interval between the cross beams that have been welded and the cross beams that are processed subsequently is equal. At the same time, the cross beams that have not been processed are parallel to the cross beams that have been welded by the cooperation between the two positioning plates 440.

[0049] During the movement of the slider 30 to the right, the slider 30 drives the pull rod 532 to move forward by the cooperation between the slider 30 and the inclined surface of the pull rod 532, so as to avoid the pull rod 532 from hindering the movement of the slider 30 to the right. The slider 30 drives the square plate to move forward synchronously. The movement of the square plate makes the corresponding spring five 534 be stretched and deformed. During the movement of the slider 30 to the left, the slider 30 moves to the left to contact the pull rod 532, and then drives the pull rod 532 to move leftward synchronously. The pull rod 532 drives the L-shaped strip 530 to move leftward synchronously through the connecting plate. The L-shaped strip 530 drives the push rod 531 to move synchronously. The push rod 531 drives the limiting block 521 to move forward to the placing groove 520 completely by the shape cooperation between the inclined surface of the push rod 531 and the limiting block 521, so that the spring four 522 is compressed and deformed. After the processing is completed, the limiting block 521 prevents the slider 30 from moving to the left.

[0050] As 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 two 54, which includes a U-shaped strip 540. The left and right sliding surfaces of the upper end surface of the horizontal section of the U-shaped plate 2 are provided with the U-shaped strip 540 with the opening facing the rear side. The front end surface of the transverse section of the U-shaped strip 540 is fixedly provided with a plurality of equally distributed push blocks one 541. The push block one 541 is a right trapezoid with the inclined surface facing the right side, and the inclined surface thereof inclines backward from left to right. The front and rear sliding surfaces of the upper end surface of the horizontal section of the U-shaped plate 2 are provided with a transmission strip 542 between the vertical rod 533 and the U-shaped strip 540. The rear end surface of the transmission strip 542 is fixedly provided with a plurality of push blocks two 543 equally distributed from left to right and matched with the push block one 541. The push block two 543 is a right trapezoid with the inclined surface facing the left side, and the inclined surface thereof inclines backward from left to right. The rear end surface of the transverse section of the U-shaped strip 540 is fixedly provided with a plurality of fixed blocks 544 equally distributed from left to right and matched with the corresponding longitudinal section of the L-shaped strip 530.

[0051] In work, after the welding processing of all the cross beams is completed, the outer hydraulic cylinder one continues to push the sliding block 30 to move rightwards. After the sliding block 30 moves to contact the right vertical section of the U-shaped strip 540, the sliding block 30 pushes the U-shaped strip 540 to move rightwards. The U-shaped strip 540 drives all the fixed blocks 544 to move rightwards synchronously. During the movement of the fixed blocks 544, through the cooperation between the fixed blocks 544 and the longitudinal sections of the corresponding L-shaped strips 530, the fixed blocks 544 pull the corresponding L-shaped strips 530 to move rightwards. The movement of the L-shaped strips 530 drives the push strip 531 to move rightwards synchronously. After the push strip 531 moves to be out of contact with the corresponding limiting block 521, the elastic force generated by the deformation of the spring four 522 pushes the limiting block 521 to move forward to reset. At the same time, the U-shaped strip 540 drives all the push blocks one 541 to move rightwards. Through the shape cooperation between the inclined surfaces of the push block one 541 and the push block two 543, the push block one 541 pushes the transmission strip 542 to move forward through the push block two 543. The movement of the transmission strip 542 drives all the vertical rods 533 to move forward synchronously. The vertical rods 533 pull the corresponding pull rods 532 to move synchronously through the square plate. The movement of the square plate makes the corresponding spring five 534 be stretched and deformed. The pull rod 532 is pulled forward through the square plate, so as to avoid that the pull rod 532 prevents the sliding block 30 from moving leftwards to reset.

[0052] After the slider 30 moves to the rightmost end of the sliding groove 3, the external hydraulic cylinder pushes the slider 30 to move leftwards. After the slider 30 contacts the inclined surface of the limiting block 521, the slider 30 pushes the limiting block 521 to move forward through the shape cooperation between the slider 30 and the inclined surface of the limiting block 521. The movement of the limiting block 521 causes the spring four 522 to be compressed and deformed. After the slider 30 moves out of contact with the limiting block 521, the spring force generated by the deformation of the spring four 522 pushes the limiting block 521 to move forward and reset. After the slider 30 contacts the left vertical segment of the U-shaped strip 540, the slider 30 pushes the U-shaped strip 540 to move leftwards. After the U-shaped strip 540 drives the pushing block one 541 to move out of contact with the corresponding pushing block two 543, the spring force generated by the deformation of each spring five 534 drives the transmission strip 542 to move forward and reset through the corresponding vertical rod 533.

[0053] In the description of the present application, it needs to be understood that the orientation words such as "front, back, up, down, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate and imply that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, therefore cannot be understood as a limitation on the protection scope of the present application; the orientation words "inner, outer" refer to the inner and outer relative to the contour of each component itself.

[0054] In addition, the terms "first", "second", "one", "two" are only for descriptive purposes, and cannot 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", "one", "two" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise explicitly specified and limited.

[0055] In the description of the present application, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "set", "connected", "mounted", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0056] The embodiments of the specific implementation are the preferred embodiments of the present application, which do not limit the protection scope of the present application, so that any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A heavy-duty vehicle chassis auxiliary welding device, characterized in that: include: 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 slider is slidably provided in the sliding groove, a sliding rod with an axis extending from top to bottom is slidably penetrated on the slider, 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; A clamping mechanism is provided on the longitudinal plate for clamping the crossbeam, and an auxiliary mechanism for limiting the welding position of the crossbeam is provided between the bottom plate and the U-shaped plate. The auxiliary mechanism includes a limiting group 1 for limiting the position of the main beam, and the auxiliary mechanism includes a limiting group 2 for limiting the rightward movement distance of the slider; The clamping mechanism includes a lower pressure bar, 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 provided between the lower pressure bar and the longitudinal plate, and two fixing rods with axes extending from left to right and symmetrically distributed front and back are fixedly provided on the left end surface of the longitudinal plate, and a positioning group is provided on the fixing rod, and the clamping mechanism includes a clamping group 2 for pulling the main beam close to the crossbeam; The upper end surface of the bottom plate is provided with a limit group 1, and the limit group 1 includes a sliding plate, and the upper end surface of the bottom plate is provided with two sliding plates that are symmetrical left and right and are located between the two vertical sections of the U-shaped plate for sliding left and right. Two abutting plates that are symmetrical left and right and are located between the two sliding plates are provided on the bottom plate for sliding left and right. The opposite surfaces of the two abutting plates are provided with two front-to-back symmetrical pushing plates that slide back and forth through two horizontal bars. A connecting bar is hingedly connected between the horizontal bar and the corresponding sliding plate, and a spring 1 is fixed between the abutting plate and the corresponding sliding plate; The two lever action of said lever action is pivotally connected to each other with a bolt, and the bolt has a pin on its side which is adapted to move the bolts along the length of the pivot position so that the lever action can move relative to the load lever when the lever is in motion.

2. The heavy-duty vehicle chassis auxiliary welding device according to claim 1, characterized in that: Four fixing plates distributed in a matrix are fixedly arranged on the upper end surface of the bottom plate.

3. The heavy-duty vehicle chassis auxiliary welding device according to claim 1, characterized in that: A second spring is fixedly arranged between the lower pressing plate and the longitudinal plate.

4. The heavy-duty vehicle chassis auxiliary welding device according to claim 3, characterized in that: A moving bar is provided on the longitudinal plate for sliding back and forth, 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 face of the moving bar. The opposite surfaces of the two moving bars are fixedly provided with a moving plate. The upper end face of the moving plate is provided with a longitudinal groove extending backward. A transmission column is provided in the longitudinal groove through the sliding movement block, and the transmission column is simultaneously located in the corresponding two transmission grooves. A spring 3 is fixedly provided 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, characterized in that: A second limiting group is provided on the upper end surface of the horizontal section of the U-shaped plate, and the second limiting group includes a placement groove. A plurality of equally distributed 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 four is fixed between the limiting block and the inner wall of the placement groove.

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 is provided with a transmission group 1, and the transmission group 1 includes an L-shaped bar, and 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. The lower end surface of the right section of the transverse section of the L-shaped bar is fixedly provided with a pushing bar, and 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. The lower end surface of the left section of the transverse section of the L-shaped bar is slidably provided with a pulling rod with an axis extending from front to rear 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. The front end surface of the pulling rod is fixedly provided with a vertical rod with an axis extending from top to bottom 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.

7. The heavy-duty vehicle chassis auxiliary welding device according to claim 1, characterized in that: The positioning group includes a positioning plate, and a positioning plate is provided on each of the two fixed rods for sliding left and right. The fixed rod is 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 a pin hole, and a positioning pin is inserted into each pin hole and the positioning hole at the corresponding position.

8. The heavy-duty vehicle chassis auxiliary welding device according to claim 6, characterized in that: The upper end surface of the horizontal section of the U-shaped plate is provided with a transmission group second, and the transmission group second includes a U-shaped bar, and the upper end surface of the horizontal section of the U-shaped plate is slid left and right and is 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 provided with a transmission bar located between the vertical rod and the U-shaped bar for sliding back and forth. The rear end surface of the transmission bar is fixedly provided with a plurality of pushing blocks 2 that are equidistantly 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 equidistantly distributed from left to right and cooperate with the corresponding L-shaped bar longitudinal sections.

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