A welding tool for the rear tilting axle of a heavy truck frame

Abstract

The present application discloses a welding fixture for the rear flip shaft of a heavy truck frame, which relates to the technical field of heavy truck production and manufacturing, and includes a horizontal plate used to be erected on the heavy truck frame along the axial direction of the flip shaft body and closely attached to the upper wing surfaces of the left and right longitudinal beams; a left baffle, a right baffle, a left shaft fixing plate and a right shaft fixing plate vertically arranged on the same side of the horizontal plate and parallel to each other; a left pressure plate detachably mounted on the left shaft fixing plate and a right pressure plate detachably mounted on the right shaft fixing plate; and an adjustment mechanism arranged on the horizontal plate for adjusting the distance between the left shaft fixing plate and the horizontal plate and the distance between the right shaft fixing plate and the horizontal plate. This welding fixture realizes the accurate positioning and reliable clamping of the rear flip shaft of the heavy truck frame, ensures the symmetry and verticality of the left and right shafts relative to the frame reference line, so that the flip shaft body, the left and right shafts can be effectively pre-positioned to the theoretically correct position, and effectively improves the shaft welding accuracy of the flip shaft.

Description

Technical Field

[0001] The present application relates to the technical field of heavy truck production and manufacturing, and in particular to a welding tool for a rear tilting axle of a heavy truck frame. Background Art

[0002] The rear flip axle of a heavy truck is one of the key chassis parts. The flip axle assembly of the heavy truck cab serves to connect the frame and the cab and to support the pressure generated after the cab flips.

[0003] In related technologies, such as Figure 1 As shown, the heavy truck frame 1 is generally in a straight line shape, and the front end of the heavy truck frame 1 is close to the cab, and the rear end of the frame is close to the tail of the vehicle. The main part of the heavy truck frame 1 is composed of a left longitudinal beam 11, a right longitudinal beam 12 and a cross beam 13. The cross beam 13 is vertically arranged between the left longitudinal beam 11 and the right longitudinal beam 12. The upper wing surface and the lower wing surface of the heavy truck frame 1 are parallel to each other and are planes; the heavy truck flip shaft assembly 2 is formed by the flip shaft body 21 and the left and right rocker arms. The flip shaft body 21 and the left rocker arm, the flip shaft body 21 and the right rocker arm all adopt a shaft hole matching structure. The flip shaft body 21 is installed at the rear end of the heavy truck frame 1 and both ends of the flip shaft body 21 are located outside the heavy truck frame 1. The two ends of the flip shaft body 21 are symmetrically provided with a left shaft hole and a right shaft hole. A left shaft 22 for welding and fixing the left rocker arm is coaxially installed in the left shaft hole, and a right shaft 23 for welding and fixing the right rocker arm is coaxially installed in the right shaft hole. In order to avoid excessive concentration of force on the connection between the flip shaft body 21 and the left rotating shaft 22, and between the flip shaft body 21 and the right rotating shaft 23, a left limit seat 24 is sleeved at the connection between the flip shaft body 21 and the left rotating shaft 22, and a right limit seat 25 is sleeved at the connection between the flip shaft body 21 and the right rotating shaft 23. The outer edges of the left limit seat 24 and the right limit seat 25 are welded and fixed to the heavy truck frame 1 to ensure the reliability of the connection.

[0004] Since the welding positioning accuracy of the flip axle is directly related to the fit between the superstructure, cargo box and longitudinal beam, in the actual welding process of the flip axle assembly, an axle positioning error of 1mm may lead to a cargo box deviation of 10mm. How to improve the axle welding accuracy is the focus and difficulty of the heavy truck frame assembly. Summary of the invention

[0005] In order to improve the welding accuracy of the flip shaft, the present application provides a heavy truck frame rear flip shaft welding tool to pre-position the flip shaft body, left rotating shaft and right rotating shaft to the theoretically correct position, ensuring the verticality of the above three major rotating shafts and the frame reference axis and the parallelism of the longitudinal beam wing surface.

[0006] The present application provides a heavy truck frame rear tilt shaft welding tooling that adopts the following technical solution:

[0007] A heavy truck frame rear tilt shaft welding tool, comprising:

[0008] The transverse plate is used to be mounted on the heavy truck frame along the axial direction of the flip shaft body and to be in close contact with the upper wing surfaces of the left and right longitudinal beams;

[0009] A left baffle, a right baffle, a left axle fixing plate and a right axle fixing plate are vertically arranged on the same side of the transverse plate and are parallel to each other, the left baffle and the right baffle are located between the left axle fixing plate and the right axle fixing plate, and the left baffle is suitable for being pressed against the left longitudinal beam of the heavy truck frame, and the right baffle is suitable for being pressed against the right longitudinal beam of the heavy truck frame, and the left limit seat is suitable for being placed between the left axle fixing plate and the left baffle, and the right limit seat is suitable for being placed between the right axle fixing plate and the right baffle;

[0010] The left shaft fixing plate is detachably connected with a left pressure plate, and the right shaft fixing plate is detachably connected with a right pressure plate, a left positioning hole for the left rotating shaft to pass through coaxially is formed between the left shaft fixing plate and the left pressure plate, a right positioning hole for the right rotating shaft to pass through coaxially is formed between the right shaft fixing plate and the right pressure plate, and the left positioning hole, the right positioning hole and the left shaft hole are coaxially arranged.

[0011] By adopting the above technical scheme, during the welding of the rear flip shaft of the heavy truck frame, the operator can first set up the cross plate on the heavy truck frame, and make the side surface of the cross plate provided with the left baffle plate, the right baffle plate and other components close to the upper wing surfaces of the left longitudinal beam and the right longitudinal beam to ensure the theoretical parallelism of the flip shaft; then use the left baffle plate to press against the left longitudinal beam, and use the right baffle plate to press against the right longitudinal beam, so that the left shaft fixing plate presses against the left rotating shaft, and the right shaft fixing plate presses against the right rotating shaft, and the left limit seat and the right limit seat are respectively placed between the left shaft fixing plate and the left baffle plate, and between the right shaft fixing plate and the right baffle plate, and the left pressure plate is used to limit the left rotating shaft in the left positioning hole, and the right pressure plate is used to limit the right rotating shaft in the right positioning hole, so that the axial direction of the left rotating shaft, the right rotating shaft and the flip shaft body are consistent, and the symmetry and verticality of the left rotating shaft and the right rotating shaft relative to the frame reference line are ensured, so that the flip shaft body, the left rotating shaft and the right rotating shaft can be effectively pre-positioned to the theoretically correct position, and the shaft welding accuracy of the flip shaft is effectively improved.

[0012] Optionally, the left axis fixing plate and the right axis fixing plate have the same specifications, the left pressure plate and the right pressure plate have the same specifications, the left baffle plate, the right baffle plate, the left axis fixing plate and the right axis fixing plate can all be detachably connected to the horizontal plate, and the distance between the left baffle plate and the right baffle plate is adjustable, and the distance between the left axis fixing plate and the right axis fixing plate is adjustable.

[0013] By adopting the above technical solution, the operator can comprehensively consider the distance between the left fender and the right fender, the distance from the left axle fixing plate to the left fender, and the distance from the right axle fixing plate to the right fender based on the actual width of the frame, the actual length of the flip shaft, the actual length of the left turning shaft, and the actual length of the right turning shaft, so that the welding tooling as a whole can effectively achieve stable pre-fixation of the left axle fixing plate and the left turning shaft, and the right axle fixing plate and the right turning shaft.

[0014] Optionally, the distances between the left axis fixing plate and the transverse plate, and between the right axis fixing plate and the transverse plate are adjustable, and an adjustment mechanism for synchronously adjusting the distance between the left axis fixing plate and the transverse plate, and the distance between the right axis fixing plate and the transverse plate is installed on the transverse plate.

[0015] By adopting the above technical solution, for heavy truck frames of different specifications, when the distance between the flip axle body and the upper wing surface of the frame is different, the operator can use the adjustment mechanism to synchronously adjust the distance between the left axle fixing plate and the cross plate and the distance between the right axle fixing plate and the cross plate in advance, so that the welding tooling can effectively adapt to the distance between the axis of the flip axle body and the upper wing surface of the frame, thereby improving the adaptability of the welding tooling.

[0016] Optionally, the adjustment mechanism includes a rotating rod, a guide rod and a driving assembly, the rotating rod and the guide rod are matched to be arranged in two groups, the two groups of the rotating rod and the guide rod are arranged at two ends of the horizontal plate opposite to each other, and the rotating rod passes through the horizontal plate and is rotatably mounted on the horizontal plate, the rotating rod is provided with a thread at one end away from the horizontal plate, the threads of the two rotating rods are rotated in opposite directions, and the left shaft fixing plate and the right shaft fixing plate are respectively threadedly assembled on the two rotating rods;

[0017] The guide rod and the rotating rod are parallel to each other, and the guide rod is used for allowing the left shaft fixing plate / the right shaft fixing plate to slide toward / away from the cross plate in a direction perpendicular to the cross plate, and the driving assembly is used for driving the two rotating rods to rotate synchronously in opposite directions.

[0018] By adopting the above technical scheme, a screw drive structure is formed between the rotating rod, the guide rod, the driving assembly and the left shaft fixing plate / right shaft fixing plate; under the limiting action of the guide rod, the driving assembly is used to drive the two rotating rods to rotate synchronously, which can drive the left shaft fixing plate and the right shaft fixing plate to approach / move away from the cross plate in a straight line in a direction perpendicular to the cross plate, thereby realizing the relative position adjustment of the left positioning hole and the right positioning hole on the cross plate, effectively improving the adaptability of the welding tooling.

[0019] Optionally, the driving assembly includes two groups of worm wheels and worms respectively arranged at both ends of the horizontal plate and a power component arranged in the middle of the horizontal plate. The two groups of worm wheels are coaxially fixedly connected to two rotating rods one by one, the worm is parallel to the flip shaft body, and the worm rotates around its axis and is connected to the side of the horizontal plate away from the left axis fixing plate. The worm wheel and worm located in the same group are meshed, and the two groups of worms rotate in opposite directions. The power component is used to provide driving force for the rotation of the two groups of worms.

[0020] By adopting the above technical solution, the power component is used to drive the worm to rotate, and then the worm drives the worm wheel to drive the rotating rod to rotate. The worm gear has a compact structure and a relatively large transmission ratio, which is convenient for realizing a large range of movement and adjustment of the left shaft fixing plate and the right shaft fixing plate; and the worm gear has a self-locking performance. When the operator moves the left shaft fixing plate and the right shaft fixing plate to the specified working position, the rotation of the worm gear is stopped, and the left shaft fixing plate and the right shaft fixing plate can be automatically locked, thereby facilitating the operator to weld and install the flip shaft assembly.

[0021] Optionally, the power component includes a driving gear rotatably connected to the middle of the horizontal plate, two transmission shafts respectively arranged on both sides of the driving gear, a reduction gear group arranged between the two transmission shafts and the driving gear, and a power member for providing power for the rotation of the driving gear, the transmission shaft is parallel to the flip shaft body, the transmission shaft is rotatably connected around its axis to the side of the horizontal plate away from the left shaft fixing plate, and the two transmission shafts are coaxially fixedly connected to the two worm gears one by one, and the driving gear is transmitted to the two transmission shafts through the reduction gear group.

[0022] By adopting the above technical solution, using the power parts, reduction gear set and driving gear transmission, the operation is stable and reliable, which is convenient for the operator to realize the movement control and precision control of the left shaft fixing plate and the right shaft fixing plate, and the operator can choose the driving motor / manual drive as the power part according to the actual processing scenario, which is conducive to further enhancing the adaptability of the welding tooling.

[0023] Optionally, the worm is hollow along its axis, and the worm is coaxially sleeved and slidably connected to a corresponding transmission shaft. The transmission shaft is also provided with a locking member for locking the sliding of the worm.

[0024] By adopting the above technical solution, the operator can utilize the sliding of the worm on the transmission shaft and the locking of the worm by the locking member to adjust the relative position of the worm on the transmission shaft, thereby enabling the worm gear to effectively adapt to the welding requirements of heavy truck frames of different widths.

[0025] Optionally, the locking member is a threaded member, and the end of the worm is threadably assembled on the transmission shaft via the threaded member.

[0026] By adopting the above technical solution, the locking and releasing of the worm on the transmission shaft are controlled by using a threaded member, which is convenient to operate and has stable locking.

[0027] Optionally, a press buckle is fixedly installed on the side of the left shaft fixing plate away from the horizontal plate and the side of the right shaft fixing plate away from the horizontal plate, and a lock seat is fixedly installed on the left pressure plate and the right pressure plate, and the press buckle is buckled and matched with the lock seat.

[0028] By adopting the above technical scheme, the left shaft fixing plate and the left pressure plate, the right shaft fixing plate and the right pressure plate are fastened and locked by means of the press buckle and the lock seat, and the fastening performance is good, so that the left rotating shaft and the right rotating shaft are not easy to be axially offset relative to the flip shaft body during the process of the operator welding the left limit seat and the heavy truck frame, the right limit seat and the heavy truck frame, which is beneficial to ensure the symmetry and verticality of the left rotating shaft and the right rotating shaft relative to the frame reference line.

[0029] In summary, the present application includes at least one of the following beneficial technical effects:

[0030] 1. This welding fixture realizes accurate positioning and reliable clamping of the rear flip axis of the heavy truck frame, cancels the previous manual marking and positioning work, eliminates the need for positioning welding during welding, reduces dimensional deviation, effectively prevents and reduces welding deformation, significantly reduces process defects, increases welding speed, and significantly improves product consistency and quality level;

[0031] 2. By making the distance between the left baffle and the right baffle adjustable, and the distance between the left shaft fixing plate and the right shaft fixing plate adjustable, the operator can realize adaptive adjustment of the close distance between the left baffle and the right baffle, and the limit position of the left shaft fixing plate and the right shaft fixing plate based on the actual width of the frame, the actual length of the turning shaft, the actual length of the left rotating shaft, and the actual length of the right rotating shaft, thereby effectively improving the adaptability of the welding tooling;

[0032] 3. Through the coordination of the left shaft fixing plate, the right shaft fixing plate and the adjustment mechanism, the operator can use the adjustment mechanism to pre-synchronously adjust the distance between the left shaft fixing plate and the transverse plate and the distance between the right shaft fixing plate and the transverse plate, so that the welding tooling can effectively adapt to the distance between the axis of the flip shaft body and the upper wing surface of the frame, further improving the adaptability of the welding tooling BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 It is a schematic diagram of the overall structure of the heavy truck frame and the tilting axle assembly in this application;

[0035] Figure 2 It is a schematic diagram of the overall structure of the welding tooling, heavy truck frame and flip shaft assembly of the present application;

[0036] Figure 3 It is a schematic diagram of the overall structure of the welding tooling of this application;

[0037] Figure 4 It is a partial structural schematic diagram of the welding tooling of the present application;

[0038] Figure 5 yes Figure 4 A magnified schematic diagram of part A;

[0039] Figure 6 yes Figure 4 Schematic diagram of the enlarged portion B.

[0040] 1. Heavy truck frame; 11. Left longitudinal beam; 12. Right longitudinal beam; 13. Cross beam; 2. Heavy truck tilt shaft assembly; 21. Tilt shaft body; 22. Left rotating shaft; 23. Right rotating shaft; 24. Left limit seat; 25. Right limit seat; 3. Welding tooling; 31. Cross plate; 32. Left baffle plate; 33. Right baffle plate; 34. Left shaft fixing plate; 35. Right shaft fixing plate; 36. Left pressure plate; 37. Right pressure plate; 38. Press buckle; 39. Lock seat; 30. Washer; 4. Adjustment mechanism; 41. Turning rod; 42. Guide rod; 43. Drive assembly; 431. Worm wheel; 432. Worm; 433. Power component; 4331. Drive gear; 4332. Transmission shaft; 4333. Reduction gear set; 4334. Power component; 4335. Locking component. DETAILED DESCRIPTION

[0041] The following is combined with Figure 1-6 This application is described in further detail.

[0042] Reference Figure 1The heavy truck frame 1 is generally in a straight line shape, and the front end of the heavy truck frame 1 is close to the cab, and the rear end of the frame is close to the rear of the vehicle. The main part of the heavy truck frame 1 is composed of a left longitudinal beam 11, a right longitudinal beam 12 and a cross beam 13. The cross beam 13 is vertically arranged between the left longitudinal beam 11 and the right longitudinal beam 12. The upper wing surface and the lower wing surface of the heavy truck frame 1 are parallel to each other and are planes; the heavy truck flip shaft assembly 2 is formed by the flip shaft body 21 and the left and right rocker arms. The flip shaft body 21 and the left rocker arm, the flip shaft body 21 and the right rocker arm all adopt a shaft hole matching structure. The flip shaft body 21 is installed at the rear end of the heavy truck frame 1 and both ends of the flip shaft body 21 are located outside the heavy truck frame 1. The two ends of the flip shaft body 21 are symmetrically provided with a left shaft hole and a right shaft hole. A left shaft 22 for welding and fixing the left rocker arm is coaxially installed in the left shaft hole, and a right shaft 23 for welding and fixing the right rocker arm is coaxially installed in the right shaft hole.

[0043] In order to improve the welding accuracy of the turning axis, refer to Figure 1 and Figure 2 The embodiment of the present application discloses a heavy truck frame rear tilt shaft welding tool to pre-position the tilt shaft body 21, the left rotating shaft 22 and the right rotating shaft 23 to the theoretically correct position, ensuring the verticality of the above three major rotating shafts and the frame reference axis and the parallelism of the longitudinal beam wing surface.

[0044] Reference Figure 1 and Figure 2 A heavy truck frame rear flip axle welding tool comprises a transverse plate 31, a left baffle plate 32, a right baffle plate 33, a left axle fixing plate 34 and a right axle fixing plate 35.

[0045] The transverse plate 31 is in the shape of a rectangular plate and is used to be axially mounted on the heavy truck frame 1 along the flip shaft body 21. The lower surface of the transverse plate 31 is suitable for being in close contact with the upper wing surfaces of the left and right longitudinal beams 12. The upper surface of the transverse plate 31 has two convex ridges protruding upward at the edges of the two long sides.

[0046] The left baffle plate 32, the right baffle plate 33, the left shaft fixing plate 34 and the right shaft fixing plate 35 are all vertically arranged on the side of the cross plate 31 away from the convex ridge and are parallel to each other. The left baffle plate 32 and the right baffle plate 33 have the same specifications, and the left shaft fixing plate 34 and the right shaft fixing plate 35 have the same specifications. The left baffle plate 32 and the right baffle plate 33 are located between the left shaft fixing plate 34 and the right shaft fixing plate 35. The left baffle plate 32 is parallel to the surface of the side of the left longitudinal beam 11 away from the right longitudinal beam 12. The left baffle plate 32 is suitable for being tightly pressed against the left longitudinal beam 11 of the heavy truck frame 1, and the right baffle plate 33 is suitable for being tightly pressed against the right longitudinal beam 12 of the heavy truck frame 1. The space between the left shaft fixing plate 34 and the left baffle plate 32 is suitable for the left limit seat 24 to be placed, and the space between the right shaft fixing plate 35 and the right baffle plate 33 is suitable for the right limit seat 25 to be placed.

[0047] Specifically, refer to Figure 2 and Figure 3The left baffle plate 32 and the right baffle plate 33 are both threadedly assembled on the lower surface of the cross plate 31 by means of threaded locking components such as bolts. The distance between the left baffle plate 32 and the right baffle plate 33 is adjustable. The left baffle plate 32 is further provided with a wavy-shaped clearance groove on the side away from the cross plate 31, which is suitable for matching with bolts and other fasteners on the outer side of the left longitudinal beam 11 of the heavy truck frame 1. The right baffle plate 33 is further provided with a wavy-shaped clearance groove on the side away from the cross plate 31, which is suitable for matching with bolts and other fasteners on the outer side of the right longitudinal beam 12 of the heavy truck frame 1.

[0048] During the welding process of the rear flip axis of the heavy truck frame 1, the operator can first install the cross plate 31 on the heavy truck frame 1, and make the side surface of the cross plate 31 provided with the left baffle 32, the right baffle 33 and other components close to the upper wing surface of the left longitudinal beam 11 and the right longitudinal beam 12 to ensure the theoretical parallelism of the flip axis.

[0049] Reference Figure 2 and Figure 3 A left pressure plate 36 is detachably connected to the side of the left shaft fixing plate 34 away from the horizontal plate 31, and a right pressure plate 37 is detachably connected to the side of the right shaft fixing plate 35 away from the horizontal plate 31. A left positioning hole for the left rotating shaft 22 to pass coaxially therethrough is formed between the left shaft fixing plate 34 and the left pressure plate 36, and a right positioning hole for the right rotating shaft 23 to pass coaxially therethrough is formed between the right shaft fixing plate 35 and the right pressure plate 37. Both the left positioning hole and the right positioning hole are circular holes, and the left positioning hole, the right positioning hole and the left shaft hole are coaxially arranged.

[0050] Further, see Figure 4 A washer 30 can be detachably installed between the left shaft fixing plate 34 and the left pressure plate 36, and between the right shaft fixing plate 35 and the right pressure plate 37. The washer 30 is composed of two symmetrical upper and lower semicircular rings, and an annular dovetail tenon is protruded on the outer peripheral wall of the semicircular ring. Dovetail grooves suitable for the semicircular rings of the washer 30 to slide into are correspondingly opened on the left shaft fixing plate 34, the left pressure plate 36, the right shaft fixing plate 35, and the right pressure plate 37; the washers 30 have different specifications, and the inner ring surface diameters of washers 30 of different specifications are different. The operator can use different washers 30 to adaptively adjust the actual size of the left positioning hole and the actual size of the right positioning hole according to the actual radius lengths of the left rotating shaft 22 and the right rotating shaft 23.

[0051] The operator can use the left baffle plate 32 to press against the left longitudinal beam 11, and the right baffle plate 33 to press against the right longitudinal beam 12, so that the left shaft fixing plate 34 presses against the left rotating shaft 22, and the right shaft fixing plate 35 presses against the right rotating shaft 23, and respectively inserts the left limit seat 24 and the right limit seat 25 between the left shaft fixing plate 34 and the left baffle plate 32, and between the right shaft fixing plate 35 and the right baffle plate 33, and uses the left pressure plate 36 and the washer 30 to limit the left rotating shaft 22 in the left positioning hole, and uses the right pressure plate 37 and the washer 30 to limit the right rotating shaft 23 in the right positioning hole, so that the axial directions of the left rotating shaft 22, the right rotating shaft 23 and the flip shaft body 21 are consistent, ensuring the symmetry and verticality of the left rotating shaft 22 and the right rotating shaft 23 relative to the frame reference line, so that the flip shaft body 21, the left rotating shaft 22 and the right rotating shaft 23 can be effectively pre-positioned to the theoretically correct position.

[0052] Specifically, look back Figure 2 and Figure 3 , a press buckle 38 is fixedly installed on the side of the left shaft fixing plate 34 away from the cross plate 31 and the side of the right shaft fixing plate 35 away from the cross plate 31, and a lock seat 39 is fixedly installed on the left pressure plate 36 and the right pressure plate 37, and the press buckle 38 is buckled and matched with the lock seat 39; the operator can use the press buckle 38 and the lock seat 39 to buckle and lock the left shaft fixing plate 34 and the left pressure plate 36, the right shaft fixing plate 35 and the right pressure plate 37, the press buckle 38 and the lock seat 39 have a strong fastening force on the left shaft fixing plate 34 and the left pressure plate 36, the right shaft fixing plate 35 and the right pressure plate 37, and the locking and unlocking of the press buckle 38 and the lock seat 39 are relatively convenient and easy to operate, which is convenient for ensuring the symmetry and verticality of the left rotating shaft 22 and the right rotating shaft 23 relative to the frame reference line.

[0053] Further, see Figure 3 and Figure 4 The left shaft fixing plate 34 and the right shaft fixing plate 35 can be detachably connected to the transverse plate 31, and the distances between the left shaft fixing plate 34 and the right shaft fixing plate 35, between the left shaft fixing plate 34 and the transverse plate 31, and between the right shaft fixing plate 35 and the transverse plate 31 are all adjustable, and an adjusting mechanism 4 for synchronously adjusting the distance between the left shaft fixing plate 34 and the transverse plate 31 and the distance between the right shaft fixing plate 35 and the transverse plate 31 is installed on the transverse plate 31.

[0054] The adjusting mechanism 4 includes a rotating rod 41, a guide rod 42 and a driving assembly 43. The rotating rod 41 and the guide rod 42 are cooperated and arranged in two groups. The two groups of rotating rods 41 and guide rods 42 are arranged at two ends of the cross plate 31 opposite to each other, and the rotating rod 41 and the guide rod 42 can be detachably assembled on the side of the cross plate 31 away from the convex edge.

[0055] In each set of rotating rods 41 and guide rods 42, there is one rotating rod 41 and at least one guide rod 42, and in the embodiment of the present application, Figure 4 and Figure 5, there are preferably two guide rods 42 in each set of rotating rods 41 and guide rods 42, and the two guide rods 42 are respectively located on both sides of the rotating rod 41, and the guide rods 42 and the rotating rod 41 in each set of rotating rods 41 and guide rods 42 are arranged at equal intervals along the length extension direction of the left longitudinal beam 11; the upper end of the rotating rod 41 movably passes through the cross plate 31 and is rotatably installed on the cross plate 31, the lower end of the rotating rod 41 is away from the cross plate 31 and is provided with a thread, the left shaft fixing plate 34 and the right shaft fixing plate 35 are respectively threadedly assembled on the two rotating rods 41, and the threads of the two rotating rods 41 are rotated in opposite directions; the upper end of the guide rod 42 is threadedly assembled and locked on the cross plate 31, and the guide rod 42 is used for the left shaft fixing plate 34 / right shaft fixing plate 35 to slide close to / away from the cross plate 31 in a direction perpendicular to the cross plate 31.

[0056] The operator can comprehensively consider the distance between the left baffle 32 and the right baffle 33, the distance between the left axle fixing plate 34 and the left baffle 32, and the distance between the right axle fixing plate 35 and the right baffle 33 based on the actual width of the frame, the actual length of the flip axis, the actual length of the left rotating shaft 22, and the actual length of the right rotating shaft 23, and adjust the specific positions of the rotating rod 41, the guide rod 42, the left baffle 32, the right baffle 33, the left axle fixing plate 34, and the right axle fixing plate 35 on the cross plate 31, so that the welding tool 3 as a whole can effectively adapt to the actual width of the frame, and pre-fix the left axle fixing plate 34 and the left rotating shaft 22, the right axle fixing plate 35, and the right rotating shaft 23 according to the actual width of the frame.

[0057] Reference Figure 4 and Figure 5 The driving assembly 43 is used to drive the two rotating rods 41 to rotate synchronously in opposite directions, and the driving assembly 43 specifically includes two sets of worm gears 431 and worms 432 respectively arranged at both ends of the cross plate 31 and a power component 433 arranged in the middle of the cross plate 31.

[0058] The two groups of worm gears 431 are coaxially fixedly connected to the two rotating rods 41 in a one-to-one correspondence, and in the embodiment of the present application, the worm gears 431 and the rotating rods 41 are preferably fixed by welding.

[0059] The worm gear 432 is connected to the power component 433 , and the power component 433 is used to provide driving force for the rotation of the two sets of worm gears 432 .

[0060] Specifically, refer to Figure 4 and Figure 6 The power component 433 includes a driving gear 4331 rotatably connected to the middle part of the horizontal plate 31, two transmission shafts 4332 respectively arranged on both sides of the driving gear 4331, a reduction gear set 4333 arranged between the two transmission shafts 4332 and the driving gear 4331, and a power piece 4334 for providing power for the rotation of the driving gear 4331.

[0061] Specifically, the transmission shaft 4332 is parallel to the flip shaft body 21, and the end of the transmission shaft 4332 is connected to the side of the horizontal plate 31 away from the left shaft fixing plate 34 by rotation around its axis, and the two transmission shafts 4332 are coaxially fixedly connected to the two worm gears 432 respectively and one by one.

[0062] Replay Figure 5 The worm 432 is hollow along its axis, and a straight groove is provided on the outer peripheral wall of the transmission shaft 4332 along its axial direction. The worm 432 is coaxially sleeved and slidably connected to the corresponding transmission shaft 4332 through the groove on the corresponding transmission shaft 4332. The worm wheel 431 in the same group is meshed with the worm 432, and the two groups of worms 432 rotate in opposite directions. The transmission shaft 4332 is also provided with a locking member 4335 for locking the sliding of the corresponding worm 432.

[0063] In order to facilitate the operator to adjust the relative position of the worm 432 on the transmission shaft 4332, refer to Figure 5 The locking member 4335 is a threaded member, and the locking member 4335 is preferably a bolt, and the end of the worm 432 is threadedly assembled on the transmission shaft 4332 through a threaded member.

[0064] The operator can utilize the sliding of the worm 432 on the transmission shaft 4332 and the locking of the worm 432 by the threaded member to adjust the relative position of the worm 432 on the transmission shaft 4332, and control the locking and release of the worm 432 on the transmission shaft 4332, so that the worm wheel 431 and the worm 432 can effectively adapt to the welding requirements of heavy truck frames 1 of different widths.

[0065] Further, look back Figure 4 and Figure 6 The reduction gear set 4333 includes two first gears coaxially sleeved on two transmission shafts 4332 and a second gear arranged between the two first gears, and the transmission ratio between the first gear and the second gear is greater than 1; the power member 4334 in the embodiment of the present application is preferably a hand-cranked lever member, and the hand-cranked lever member includes a coaxially arranged round rod portion and a hand-cranked ring portion, the hand-cranked ring portion is located at the end of the round rod portion, and an active bevel gear is coaxially fixed at one end of the round rod portion away from the hand-cranked ring portion, and the driving gear 4331 is a driven bevel gear meshing with the active bevel gear. The driving gear 4331 is coaxially fixedly connected to the rotating shaft of the second gear, and the driving gear 4331 is transmission-coordinated with the two transmission shafts 4332 through the first gear and the second gear.

[0066] By rotating the hand-cranked circular ring part, the active bevel gear can be conveniently driven to drive the driving gear 4331 to rotate, thereby driving the two sets of transmission shafts 4332 and the worm 432 to rotate in the same direction, and the two sets of worm gears 432 correspondingly drive the two sets of worm wheels 431 to drive the corresponding two rotating rods 41 to rotate in the opposite direction, so that the rotating rod 41 drives the left shaft fixing plate 34 and the right shaft fixing plate 35 to synchronously approach / move away from the cross plate 31 along the axial direction of the guide rod 42, thereby realizing the relative position adjustment of the left positioning hole and the right positioning hole on the cross plate 31, which is easy to operate, effectively improves the adaptability of the welding tooling 3, and the control process is relatively convenient and the control accuracy is high.

[0067] In other application embodiments, the power member 4334 may also adopt a driving motor, which is installed on the horizontal plate 31. The output shaft end of the driving motor is coaxially fixed with an active bevel gear that is in transmission mesh with the driving gear 4331. The driving motor is used to drive the driving gear 4331 to rotate, thereby efficiently controlling the rotation of the rotating rod 41.

[0068] The implementation principle of the welding tool for the rear flip shaft of a heavy truck frame in the embodiment of the present application is as follows: during the welding of the rear flip shaft of the heavy truck frame 1, the operator can first use a threaded member to pre-adjust the left baffle plate 32, the right baffle plate 33, the left shaft fixing plate 34 and the right shaft fixing plate 35 to a predetermined position according to the actual width of the heavy truck frame 1, and adjust the distance between the left shaft fixing plate 34 and the right shaft fixing plate 35 and the cross plate 31 according to the distance between the axis of the flip shaft body 21 and the upper wing surface of the frame, and then install the cross plate 31 on the heavy truck frame 1, and make the side surface of the cross plate 31 provided with the left baffle plate 32, the right baffle plate 33 and other components close to the upper wing surfaces of the left longitudinal beam 11 and the right longitudinal beam 12 to ensure the theoretical parallelism of the flip shaft; then use the left baffle plate 32 to press against the left longitudinal beam 11, and use the right baffle plate 33 to press against the right longitudinal beam 12, so that The left shaft fixing plate 34 presses against the left rotating shaft 22, and the right shaft fixing plate 35 presses against the right rotating shaft 23, and the left limit seat 24 and the right limit seat 25 are respectively placed between the left shaft fixing plate 34 and the left baffle plate 32, and between the right shaft fixing plate 35 and the right baffle plate 33, and the left pressure plate 36 and the left shaft fixing plate 34, as well as the right pressure plate 37 and the right shaft fixing plate 35 are locked by the buckle 38, so that the left pressure plate 36 limits the left rotating shaft 22 in the left positioning hole, and the right pressure plate 37 limits the right rotating shaft 23 in the right positioning hole, so that the axial direction of the left rotating shaft 22, the right rotating shaft 23 and the flip shaft body 21 are consistent, ensuring the symmetry and verticality of the left rotating shaft 22 and the right rotating shaft 23 relative to the frame reference line, so that the flip shaft body 21, the left rotating shaft 22 and the right rotating shaft 23 can be effectively pre-positioned to the theoretically correct position, effectively improving the shaft welding accuracy of the flip shaft.

[0069] Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. The words "first", "second", "third" and similar words used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "One" or "one" and similar words do not indicate a quantitative limit, but indicate that there is at least one. "Include" or "comprise" and similar words mean that the elements or objects appearing before "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0070] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A welding tool for the rear tilting axle of a heavy truck frame, characterized in that: include: A transverse plate (31) is used to be mounted on the heavy truck frame (1) along the axial direction of the flip shaft body (21) and to be in close contact with the upper wing surfaces of the left and right longitudinal beams (12); A left baffle (32), a right baffle (33), a left shaft fixing plate (34) and a right shaft fixing plate (35) are vertically arranged on the same side of the transverse plate (31) and are parallel to each other. The left baffle (32) and the right baffle (33) are located between the left shaft fixing plate (34) and the right shaft fixing plate (35). The left baffle (32) is suitable for being pressed against the left longitudinal beam (11) of the heavy truck frame (1), and the right baffle (33) is suitable for being pressed against the right longitudinal beam (12) of the heavy truck frame (1). The left limit seat (24) is suitable for being placed between the left shaft fixing plate (34) and the left baffle (32). The right limit seat (25) is placed between the fixing plate (35) and the right baffle plate (33); the left shaft fixing plate (34) is detachably connected to a left pressure plate (36), and the right shaft fixing plate (35) is detachably connected to a right pressure plate (37); a left positioning hole for coaxially passing the left rotating shaft (22) is formed between the left shaft fixing plate (34) and the left pressure plate (36); a right positioning hole for coaxially passing the right rotating shaft (23) is formed between the right shaft fixing plate (35) and the right pressure plate (37); the left positioning hole, the right positioning hole and the left shaft hole are coaxially arranged; The distances between the left shaft fixing plate (34) and the transverse plate (31), and between the right shaft fixing plate (35) and the transverse plate (31) are both adjustable, and an adjusting mechanism (4) is installed on the transverse plate (31) for synchronously adjusting the distance between the left shaft fixing plate (34) and the transverse plate (31), and the distance between the right shaft fixing plate (35) and the transverse plate (31); The adjusting mechanism (4) comprises a rotating rod (41), a guide rod (42) and a driving assembly (43); the rotating rod (41) and the guide rod (42) are matched to form two groups; the two groups of the rotating rod (41) and the guide rod (42) are arranged at two ends of the horizontal plate (31) opposite to each other; the rotating rod (41) passes through the horizontal plate (31) and is rotatably mounted on the horizontal plate (31); a thread is formed at one end of the rotating rod (41) away from the horizontal plate (31); the threads of the two rotating rods (41) are rotated in opposite directions; the left shaft fixing plate (34) and the right shaft fixing plate (35) are respectively threadedly assembled on the two rotating rods (41); The guide rod (42) and the rotating rod (41) are parallel to each other, and the guide rod (42) is used to allow the left shaft fixing plate (34) / the right shaft fixing plate (35) to slide toward / away from the cross plate (31) in a direction perpendicular to the cross plate (31), and the driving assembly (43) is used to drive the two rotating rods (41) to rotate synchronously in opposite directions.

2. The heavy truck frame rear tilt shaft welding tool according to claim 1, characterized in that: The left shaft fixing plate (34) and the right shaft fixing plate (35) have the same specifications, the left pressure plate (36) and the right pressure plate (37) have the same specifications, the left baffle plate (32), the right baffle plate (33), the left shaft fixing plate (34) and the right shaft fixing plate (35) can all be detachably connected to the transverse plate (31), and the distance between the left baffle plate (32) and the right baffle plate (33) is adjustable, and the distance between the left shaft fixing plate (34) and the right shaft fixing plate (35) is adjustable.

3. The heavy truck frame rear tilt shaft welding tool according to claim 1, characterized in that: The driving assembly (43) comprises two groups of worm wheels (431) and worms (432) respectively arranged at two ends of the transverse plate (31) and a power component (433) arranged in the middle of the transverse plate (31); the two groups of worm wheels (431) are respectively and coaxially fixedly connected to the two rotating rods (41) in a one-to-one correspondence; the worms (432) are parallel to the flip shaft body (21); the worms (432) are rotatably connected around their axes to a side of the transverse plate (31) away from the left shaft fixing plate (34); the worm wheels (431) and the worms (432) in the same group are meshed; the two groups of worms (432) rotate in opposite directions; and the power component (433) is used to provide driving force for the rotation of the two groups of worms (432).

4. The heavy truck frame rear tilt shaft welding tool according to claim 3, characterized in that: The power component (433) comprises a driving gear (4331) rotatably connected to the middle part of the transverse plate (31), two transmission shafts (4332) respectively arranged on both sides of the driving gear (4331), a reduction gear set (4333) arranged between the two transmission shafts (4332) and the driving gear (4331), and a power member (4334) for providing power for the rotation of the driving gear (4331), wherein the transmission shaft (4332) is parallel to the flip shaft body (21), the transmission shaft (4332) is rotatably connected around its axis to a side of the transverse plate (31) away from the left shaft fixing plate (34), and the two transmission shafts (4332) are respectively and coaxially fixedly connected to the two worm gears (432) in a one-to-one correspondence, and the driving gear (4331) is transmission-coordinated with the two transmission shafts (4332) via the reduction gear set (4333).

5. The heavy truck frame rear tilt shaft welding tool according to claim 4, characterized in that: The worm (432) is hollow along its axis, and the worm (432) is coaxially sleeved and slidably connected to a corresponding transmission shaft (4332). The transmission shaft (4332) is also provided with a locking member (4335) for locking the sliding of the worm (432).

6. The heavy truck frame rear tilt shaft welding tool according to claim 5, characterized in that: The locking member (4335) is a threaded member, and the end of the worm (432) is threadedly assembled on the transmission shaft (4332) through the threaded member.

7. The heavy truck frame rear tilt shaft welding tool according to claim 1, characterized in that: A pressing buckle (38) is fixedly installed on the side of the left shaft fixing plate (34) away from the transverse plate (31) and a pressing buckle (38) is fixedly installed on the side of the right shaft fixing plate (35) away from the transverse plate (31). A locking seat (39) is fixedly installed on the left pressing plate (36) and the right pressing plate (37). The pressing buckle (38) is buckled and matched with the locking seat (39).

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