Point splicing tool for rear axle box

Abstract

The invention discloses a rear axle box point splicing tool, which belongs to the technical field of rear axle box welding, and comprises a tool main body, a positioning device, a positioning device, a positioning device and a positioning device, and is characterized in that the tool main body is used for fixing a rear axle box bottom plate and a rear axle box partition plate; the two lateral positioning assemblies are used for fixing a left side plate and a right side plate of the rear axle box; the front positioning assembly is used for fixing a front side plate of the rear axle box; the rear positioning assembly is used for fixing a rear side plate and a cover plate of the rear axle box; wherein a plurality of sliding assemblies are installed on the tool body, the lateral positioning assembly, the front positioning assembly and the rear positioning assembly are installed with the corresponding sliding assemblies in a sliding mode through floating compensation positioning mechanisms, and the floating compensation positioning mechanisms are used for compensating deviation of angles and positions. Manual overturning or manual fixing is not needed in the whole process, the labor intensity is reduced, contact between operators and welding radiation and smoke dust is reduced, and meanwhile the production automation level is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rear axle housing welding, in particular to a rear axle housing splicing tool. BACKGROUND

[0002] A bulldozer is a large construction machine that can complete earthwork excavation, transportation, backfilling and other operations, and is widely used in the fields of transportation, farmland water conservancy, mining, energy and national defense construction, and plays a key role in the process of mechanized construction. As one of the core components of the bulldozer, the rear axle housing has different specifications corresponding to different bulldozer models, and the length size difference may be significant. At present, the production of rear axle housing is faced with many practical problems: the length size specifications are numerous, the welding positions are different, manual turning of the workpiece is required during operation, and a lot of radiation and smoke will be generated during welding. At present, manual welding mode is adopted in most factories, which not only has high labor intensity and low automation level, but also causes great harm to the health of the operators. In order to solve the above problems, the present application provides a rear axle housing splicing tool. SUMMARY

[0003] In view of the above technical deficiencies, the purpose of the present application is to provide a rear axle housing splicing tool which can realize automatic positioning and pressing of each component of the rear axle housing, without manual turning or manual fixing throughout the process, thereby reducing labor intensity, reducing the contact of operators with welding radiation and smoke, and greatly improving the production automation level.

[0004] To solve the above technical problems, the present application adopts the following technical scheme: the present application provides a rear axle housing splicing tool, which comprises: a tool main body, which serves as a bearing matrix and is used for fixing a rear axle housing bottom plate and a rear axle housing partition plate; two lateral positioning assemblies, which are both slidingly installed on the tool main body and are respectively used for fixing a left side plate and a right side plate of the rear axle housing, and the two lateral positioning assemblies are symmetrically distributed on the tool main body; a front positioning assembly, which is slidingly installed on the tool main body and is used for fixing a front side plate of the rear axle housing; a rear positioning assembly, which is slidingly installed on the tool main body and is used for fixing a rear side plate and a cover plate of the rear axle housing; wherein the tool main body is provided with a plurality of sliding components for stable sliding of the lateral positioning assembly, the front positioning assembly and the rear positioning assembly on the tool main body, and the lateral positioning assembly, the front positioning assembly and the rear positioning assembly are slidingly installed between the corresponding sliding components through a floating compensation positioning mechanism, for compensating the deviation of angle and position.

[0005] Preferably, the tool main body comprises: a base frame; A plurality of bottom plate limiting blocks are fixedly installed on the base frame; A plurality of bottom plate cushion blocks are fixedly installed on the base frame for supporting the rear axle box bottom plate; A plurality of bottom plate positioning pins are fixedly installed on the base frame; A plurality of bottom plate pressing assemblies are installed on the base frame for abutting and fixing the rear axle box bottom plate; A partition plate positioning assembly is fixedly installed on the base frame for fixing the rear axle box partition plate; Wherein, the plurality of bottom plate limiting blocks and the plurality of bottom plate positioning pins cooperate to define the position of the rear axle box bottom plate; The bottom plate pressing assembly comprises: A rotary oil cylinder is fixedly installed on the base frame; A bottom plate abutting block is fixedly installed on one end of the output rod of the rotary oil cylinder, and the other end is wedge-shaped for abutting the rear axle box bottom plate; The partition plate positioning assembly comprises: A main rod is fixedly installed on the base frame, and the upper end of the main rod is fixedly installed with a supporting seat on both sides for supporting the rear axle box partition plate; Two pressing blocks are hingedly installed on the side surface of the corresponding supporting seat and are driven by a first hydraulic rod installed inside the main rod; Wherein, the pressing block is hinged to the main rod through a connecting plate, and the output rod of the first hydraulic rod is hinged to the pressing block. When the output rod of the first hydraulic rod is extended, the end of the pressing block away from the main rod exerts a downward abutting force on the rear axle box partition plate to fix the rear axle box partition plate.

[0006] Preferably, the lateral positioning assembly comprises: A lateral positioning frame is installed on the corresponding sliding assembly; A lateral plate positioning shaft is installed on the lateral positioning frame through a corresponding mounting assembly; A lateral plate positioning pin is installed on the lateral positioning frame through another mounting assembly; A lateral plate cushion block is fixedly installed on the lateral positioning frame for defining the position of the rear axle box lateral plate; A lateral plate pressing assembly is installed on the lateral positioning frame for clamping and fixing the rear axle box lateral plate in cooperation with the lateral plate cushion block; A leg fixing assembly is installed on the lateral positioning frame for fixing the rear axle box leg.

[0007] Preferably, the side plate pressing assembly comprises: A positioning plate is fixedly installed on the lateral positioning frame, and a second hydraulic rod is fixedly installed on the lateral positioning frame, the output rod of the second hydraulic rod is hingedly connected with a hinged plate, and a connecting strip is arranged between the middle part of the hinged plate and the positioning plate, the two ends of the connecting strip are respectively hingedly connected with the hinged plate and the positioning plate, and a pressing shaft is fixedly installed on the hinged plate.

[0008] Preferably, the leg fixing assembly comprises: A leg fixing plate is fixedly installed on the lateral positioning frame, a support block is fixedly installed on the side surface of the leg fixing plate away from the center of the tool main body, a plurality of leg positioning pins are threadedly installed on the leg fixing plate, and a swing arm is hingedly connected to the side surface of the leg fixing plate close to the center of the tool main body, and a pressing bolt is threadedly installed on the swing arm.

[0009] Preferably, the front positioning assembly comprises: A front positioning frame is installed on the corresponding sliding assembly; A plurality of front plate positioning pins are installed on the front positioning frame through corresponding mounting assemblies; A plurality of front plate gaskets are fixedly installed on the front positioning frame; A plurality of front plate limiting blocks are fixedly installed on the front positioning frame, and are used for limiting the position of the front side plate of the rear axle box in cooperation with the front plate gaskets; A plurality of front plate pressing assemblies are installed on the front positioning frame, and are used for fixing the front side plate of the rear axle box; The front plate pressing assembly comprises: A plurality of third hydraulic rods are fixedly installed on the front positioning frame, and a front plate pressing block is fixedly installed on the output rod of the third hydraulic rod.

[0010] Preferably, the rear positioning assembly comprises: A rear positioning frame is installed on the corresponding sliding assembly; A plurality of rear plate gaskets are fixedly installed on the rear positioning frame; A rear plate limiting block is fixedly installed on the rear positioning frame, and is used for limiting the position of the rear side plate of the rear axle box in cooperation with the rear plate gaskets; A rear plate pressing assembly is installed on the rear positioning frame, and is used for fixing the rear side plate of the rear axle box; A cover plate fixing assembly is installed on the rear positioning frame, and is used for fixing the cover plate of the rear axle box; The rear plate pressing assembly comprises a fourth hydraulic rod, which is installed on the rear positioning frame, and the output rod of the fourth hydraulic rod is fixedly installed with a base, a plurality of first connecting rods are uniformly hinged on the circumference of the base, the ends of the plurality of first connecting rods away from the base are inclined towards the direction away from the axis of the base, and are respectively hinged with second connecting rods, and the ends of the plurality of second connecting rods away from the first connecting rods are hinged with a base plate fixedly installed on the rear positioning frame; The cover plate fixing assembly comprises a mounting rod, which is hinged with a mounting seat fixedly installed on the upper end of the rear positioning frame, and the end of the mounting rod towards the center of the tool body is fixedly installed with a pressing shaft, and the side face of the mounting seat away from the center of the tool body is hinged with a sixth hydraulic rod, and the output rod of the sixth hydraulic rod is hinged with the end of the mounting rod away from the pressing shaft.

[0011] Preferably, the sliding assembly comprises: A sliding plate, which is slidingly connected with the sliding rail fixedly installed on the tool body, and is driven by a fifth hydraulic rod installed on the tool body, the floating compensation positioning mechanism is located above the sliding plate, and the upper side face of the sliding plate is fixedly installed with a protection frame of elastic material.

[0012] Preferably, the floating compensation positioning mechanism comprises: A center rod, which is in the shape of a prism, and the outer side of the center rod is sleeved with a second elastic frame and a plurality of first elastic frames, and the plurality of first elastic frames are sleeved in the inside of the second elastic frame; The first elastic frame comprises a plurality of first inner recesses, and the adjacent two first inner recesses are connected through an outer convex semicircular arc rod; The second elastic frame comprises a plurality of second inner recesses, and the adjacent two second inner recesses are connected through an outer convex arc rod; The first inner recesses and the second inner recesses are distributed at intervals and respectively abut against the outer side wall of the center rod, and the semicircular arc rod extends to the outside of the second elastic frame through the through hole provided on the second inner recess.

[0013] Preferably, the mounting assembly comprises: An adjusting frame, which is in the shape of an "L" and serves as the support base of the mounting assembly; A mounting plate, which is located between the vertical side plate and the horizontal side plate of the adjusting frame, and the two side faces of the mounting plate close to the vertical side plate and the horizontal side plate of the adjusting frame are both threadedly connected with fixing bolts, and the nuts of the fixing bolts extend into the waist-shaped sunken groove provided on the adjusting frame through the waist-shaped through groove provided on the adjusting frame.

[0014] The present application has the following advantages: The present application realizes flexible adaptation to rear axle housings of different length specifications through the arrangement of the tool body, the front positioning assembly, the rear positioning assembly and the two lateral positioning assemblies, the fifth hydraulic rod drives the sliding plate to slide along the slide rail, the relative distance of each positioning assembly and the tool body can be quickly adjusted to adapt to the length difference of the rear axle housing, the mounting assembly can fine-tune the installation position of the side plate positioning pin, the front plate positioning pin and other components through the waist-shaped through groove and the fixing bolt, without the need to design a tool for different specifications, the tool versatility is greatly improved, the production cost is reduced, and the automatic driving of the bottom plate pressing assembly, the side plate pressing assembly, the front plate pressing assembly, the rear plate pressing assembly, the partition plate positioning assembly and the cover plate fixing assembly in cooperation with the sliding assembly realizes the automatic positioning and pressing of each component of the rear axle housing, without manual overturning or manual fixing throughout, which reduces the labor intensity, reduces the contact of the operator with welding radiation and smoke, and greatly improves the production automation level.

[0015] The present application realizes real-time self-adaptive compensation of angle deviation and position deviation during the assembly of the rear axle housing side plate, the front plate and the rear plate through the arrangement of the center rod, the first elastic frame and the second elastic frame, so that the workpiece deformed during casting or heat treatment can be precisely fitted to the bottom plate at one time, and the internal stress and post-welding deformation caused by forced assembly can be eliminated, and the assembly accuracy and fatigue life of the rear axle housing are greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0018] Figure 2 It is a schematic diagram of the use state of the present application.

[0019] Figure 3 It is a schematic diagram of the structure of the bottom plate frame of the present application.

[0020] Figure 4 It is an enlarged view of A of the present application. Figure 3

[0021] Figure 5 It is a front view of the main rod and the supporting seat of the present application.

[0022] Figure 6 It is a schematic diagram of the structure of the lateral positioning frame of the present application.

[0023] Figure 7 ​This is a schematic diagram of the front positioning frame of the present invention.

[0024] Figure 8 This is a schematic diagram of the structure of the positioning frame of the present invention.

[0025] Figure 9 This is a front view of the fourth hydraulic rod, base, first connecting rod, and second connecting rod of the present invention.

[0026] Figure 10 This is a schematic diagram of the slide and protective frame of the present invention.

[0027] Figure 11 This is a cross-sectional view of the slide and protective frame of the present invention.

[0028] Figure 12 This is a schematic diagram of the structure of the central rod, the first elastic frame, and the second elastic frame of the present invention.

[0029] Figure 13 This is an exploded view of the central rod, the first elastic frame, and the second elastic frame of the present invention.

[0030] Figure 14 This is a cross-sectional view of the adjustment frame and mounting plate of the present invention.

[0031] Explanation of reference numerals in the attached figures: 1. Slide plate, 2. Base frame, 3. Base plate limiting block, 4. Base plate pad, 5. Base plate positioning pin, 6. Rotary cylinder, 7. Base plate clamping block, 8. Main rod, 9. Pressure block, 10. First hydraulic rod, 11. Lateral positioning frame, 12. Side plate pad, 13. Side plate positioning shaft, 14. Side plate positioning pin, 15. Positioning plate, 16. Second hydraulic rod, 17. Hinge plate, 18. Clamping shaft, 19. Outrigger fixing plate, 20. Outrigger positioning pin, 21. Swing arm, 22. Clamping bolt, 23. Front positioning frame, 24. Front plate positioning pin, 25. Front plate pad, 26. Front plate limiting block, 27. ... 28. Three hydraulic rods, 29. Front plate clamping block, 30. Rear positioning frame, 31. Rear plate pad, 32. Rear plate limiting block, 33. Fourth hydraulic rod, 34. Base, 35. First connecting rod, 36. Second connecting rod, 37. Base plate, 38. Fifth hydraulic rod, 39. Slide rail, 40. Sixth hydraulic rod, 41. Center rod, 42. First elastic frame, 43. Second elastic frame, 44. Adjusting frame, 45. Mounting plate, 46. Fixing bolt, 47. Waist-shaped through groove, 48. Waist-shaped recess, 49. Mounting rod, 50. Pressure shaft, 51. Protective frame, 52. Support seat, 53. Support block. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] This invention provides a rear axle housing assembly tooling, such as... Figures 1 to 14 As shown.

[0034] Example 1: A rear axle housing assembly tooling includes a tooling body, a front positioning assembly, a rear positioning assembly, and two lateral positioning assemblies. The tooling body serves as a load-bearing base and can fix the position of the partition in the middle of the rear axle housing. Multiple sliding components are installed on the tooling body. The front positioning assembly, the rear positioning assembly, and the two lateral positioning assemblies are slidably mounted on the tooling body through the sliding components.

[0035] The main body of the fixture includes a base frame 2. Multiple base plate limiting blocks 3, multiple base plate pads 4, and multiple base plate positioning pins 5 are fixedly fixed at intervals on the base frame 2. The multiple base plate limiting blocks 3 and multiple base plate positioning pins 5 cooperate to limit the position of the rear axle housing base plate. The base plate pads 4 directly support the lower surface of the base plate, ensuring that the base plate remains horizontal with the main body of the fixture. Multiple base plate clamping assemblies are also fixedly installed on the base frame 2. Each base plate clamping assembly includes a rotary cylinder 6 and a base plate abutment block 7. The rotary cylinder 6 is fixed to the side of the base frame 2. One end of the base plate abutment block 7 is fixedly installed on the output rod of the rotary cylinder 6, and the other end is wedge-shaped. During the fixing process, as the output rod of the rotary cylinder 6 rotates, it cooperates with the base plate pads 4 to clamp and fix the rear axle housing base plate.

[0036] When fixing the rear axle box bottom plate, the rear axle box bottom plate is hoisted onto the bottom plate pad 4 by hand, and the position of the rear axle box bottom plate is adjusted so that it is close to the bottom plate limit block 3 and multiple bottom plate positioning pins 5. Then the rotary cylinder 6 can be started so that the bottom plate pressing block 7 and the bottom plate pad 4 cooperate to clamp and fix the rear axle box bottom plate.

[0037] A partition positioning assembly is also fixedly installed on the base frame 2. The partition positioning assembly is used to fix the rear axle box partition. The partition positioning assembly includes a vertical main rod 8. Support seats 52 for supporting the rear axle box partition are fixedly installed on both sides of the top of the main rod 8. Pressure blocks 9 are respectively hinged to the opposite sides of the two support seats 52. The pressure blocks 9 are hinged to the support seats 52 through connecting plates. Two first hydraulic rods 10 are installed inside the main rod 8. The output rods of the two first hydraulic rods 10 pass through the corresponding support seats 52 and are hinged to the two pressure blocks 9. When the first hydraulic rods 10 extend, the outer ends of the two pressure blocks 9 swing down synchronously, applying a downward pressing force to the upper surface of the middle partition. The contact surface between the pressure blocks 9 and the partition is processed with a high friction coefficient wear-resistant layer to further prevent the partition from slipping during subsequent assembly.

[0038] When fixing the rear axle box partition, the middle partition of the rear axle box is hoisted onto the support seat 52 by hand. Then, the first hydraulic rod 10 is activated to make the outer end of the pressure block 9 swing down synchronously to fix the middle partition of the rear axle box.

[0039] Two lateral positioning assemblies are symmetrically distributed on the base frame 2 and are slidably mounted on the base frame 2 via sliding components. The two lateral positioning assemblies are used to fix the left and right side plates of the rear axle box, respectively.

[0040] The lateral positioning assembly includes a lateral positioning frame 11. A side plate positioning shaft 13 and a side plate positioning pin 14 are mounted on the lateral positioning frame 11 via mounting components. The mounting components allow for adjustment of the positions of the side plate positioning shaft 13 and the side plate positioning pin 14, making it suitable for different models of rear axle box side plates. The side plate positioning shaft 13 and the side plate positioning pin 14 cooperate to position the rear axle box side plate. A side plate clamping assembly is mounted on the lateral positioning frame 11. This assembly uses a swing-type clamping mechanism driven by a second hydraulic rod 16. The second hydraulic rod 16 is fixed to the lateral positioning frame 11, and its output rod front end is hinged to a hinge plate 17. The hinge plate 17 is hinged to a positioning plate 15 fixedly mounted on the lateral positioning frame 11 via a connecting strip. A clamping shaft 18 is fixed to the lower end of the hinge plate 17. When the second hydraulic rod 16 extends, the hinge plate 17 swings around the hinge point, causing the clamping shaft 18 to clamp and fix the side plate.

[0041] When fixing the side panels, the left and right side panels of the rear axle housing are manually hoisted onto the side panel pads 12 of the two lateral positioning assemblies, respectively, and passed through the side panel positioning shaft 13 and the side panel positioning pin 14 to determine the position of the rear axle housing side panels. Then, the second hydraulic rod 16 can be activated to make the clamping shaft 18 clamp and fix the side panels. The lateral positioning assembly is also equipped with a leg fixing component, which includes a leg fixing plate 19. A support block 53 is fixed to the lower part of the leg fixing plate 19 to directly bear the weight of the leg. Multiple leg positioning pins 20 are also threaded on the leg fixing plate 19. The leg positioning pins 20 and the support block 53 cooperate with each other to limit the position of the leg and position it. The leg positioning pins 20 can be adjusted to extend to accommodate different models of leg. A swing arm 21 is hinged to the outside of the leg fixing plate 19, and a locking bolt 22 is threaded on the swing arm 21.

[0042] When fixing the rear axle box outriggers, the left and right outriggers are hoisted onto the support block 53 by hand, and their positions are adjusted to fit with the outrigger positioning pin 20 to determine the position of the outriggers. Then, the swing arm 21 is rotated and the clamping bolt 22 is rotated clockwise so that the clamping bolt 22 and the outrigger fixing plate 19 cooperate to fix the outriggers.

[0043] The front positioning assembly is slidably mounted on the base frame 2 via a sliding component to fix the front panel of the rear axle housing. The front positioning assembly includes a front positioning frame 23, on which multiple front panel pads 25 and front panel limiting blocks 26 are fixed. The multiple front panel pads 25 are used to support the front panel, and the front panel limiting blocks 26 assist the front panel in positioning. Multiple front panel positioning pins 24 are also adjustablely mounted on the front positioning frame 23 via multiple mounting components. The position of the front panel positioning pins 24 can be adjusted according to the corresponding front side panel of the rear axle housing. The front panel positioning pins 24 and the front panel limiting blocks 26 cooperate with each other to precisely limit the position of the front side panel of the rear axle housing.

[0044] The front positioning assembly is also equipped with a front plate clamping assembly, which includes multiple third hydraulic rods 27. The multiple third hydraulic rods 27 are mounted on the front positioning frame 23. A front plate clamping block 28 is fixedly installed on the output rod of the third hydraulic rod 27. When the output rod of the third hydraulic rod 27 retracts, it will clamp and fix the front side plate of the rear axle box through the front plate clamping block 28.

[0045] When fixing the front side panel of the rear axle box, the front side panel of the rear axle box is hoisted onto the front panel pad 25 by hand, and the position is adjusted to be close to the front panel limit block 26 and the front panel positioning pin 24. Then the third hydraulic rod 27 can be activated to completely fix the position of the front side panel of the rear axle box.

[0046] The rear positioning assembly is slidably mounted on the base frame 2 via a sliding component, used to fix the rear plate and cover plate of the rear axle housing. The rear positioning assembly includes a rear positioning frame 29, on which multiple rear plate pads 30 and rear plate limiting blocks 31 are fixed, used to cooperate to define the position of the rear side plate of the rear axle housing. A rear plate clamping assembly is also fixedly mounted on the rear positioning frame 29. The rear plate clamping assembly adopts a radially expanding linkage mechanism driven by a fourth hydraulic rod 32. The fourth hydraulic rod 32 is vertically mounted on the rear positioning frame 29, and a base 33 is fixed to the top of its output rod. Multiple first connecting rods 34 are evenly hinged to the base 33 around its circumference. The outer ends of the first connecting rods 34 are then hinged to second connecting rods 35. The end of the second connecting rod 35 away from the first connecting rod 34 is hinged to a base plate 36 fixed to the rear positioning frame 29. When the fourth hydraulic rod 32 retracts, the base 33 drives the multiple first connecting rods 34 and multiple second connecting rods 35 to expand outward synchronously, ultimately forming a uniform clamping force on the inner wall of the rear side plate.

[0047] When fixing the rear side panel of the rear axle box, the rear side panel of the rear axle box is hoisted onto the rear panel pad 30 by hand, and its position is adjusted so that it is close to the rear panel limiting block 31, thereby limiting the position of the rear panel. Then the fourth hydraulic rod 32 can be activated so that multiple first connecting rods 34 and multiple second connecting rods 35 cooperate with each other to fix the rear panel of the rear axle box.

[0048] A cover plate fixing assembly is also fixedly installed on the rear positioning frame 29. The cover plate fixing assembly is used to fix the cover plate of the rear axle box. The cover plate positioning assembly includes a mounting base 49, which is fixedly installed on the upper end of the rear positioning frame 29. A mounting rod 48 is hinged to the upper end of the mounting base 49. A pressure shaft is fixedly installed at the end of the mounting rod 48 facing the center of the base frame 2. A sixth hydraulic rod 39 is hinged to the side of the mounting base 49 away from the center of the base frame 2. The output rod of the sixth hydraulic rod 39 is hinged to the end of the mounting rod 48 away from the pressure shaft 50. When the output rod of the sixth hydraulic rod 39 extends, it will drive the mounting rod 48 to rotate around the hinge point with the mounting base 49, so that the pressure shaft 50 can apply a downward pressing force to the cover plate, thereby fixing the cover plate.

[0049] During the work process, the following should be hoisted in sequence: rear axle box bottom plate, rear axle box rear side plate, rear axle box partition plate, rear axle box left and right side plates, rear axle box front plate, rear axle box cover plate, and rear axle box left and right support legs. After assembling the rear axle box bottom plate, rear axle box rear side plate, rear axle box partition plate, rear axle box left and right side plates, rear axle box front plate, rear axle box cover plate, and rear axle box left and right support legs, spot welding can then be performed.

[0050] Example 2: Based on Embodiment 1, the sliding assembly includes: a slide plate 1, which is slidably connected to a slide rail 38 fixedly installed on the base frame 2, and the slide plate 1 is driven by a corresponding fifth hydraulic rod 37. A floating compensation positioning mechanism is installed on the slide plate 1.

[0051] Below the front positioning frame 23, the rear positioning frame 29, and the two lateral positioning frames 11, there are slides 1 respectively. The front positioning frame 23, the rear positioning frame 29, and the two lateral positioning frames 11 are respectively connected to the floating compensation positioning mechanism on the corresponding slide 1. A protective frame 51 of elastic material is fixedly installed around the upper side of the slide 1. The protective frame 51 is connected to the corresponding front positioning frame 23, the rear positioning frame 29, and the two lateral positioning frames 11. The protective frame 51 surrounds multiple floating compensation positioning mechanisms and can protect the floating compensation positioning mechanisms.

[0052] The floating compensation positioning mechanism allows the front positioning frame 23, the rear positioning frame 29, and the two lateral positioning frames 11 to generate X-axis and Y-axis translation + Z-axis torsion + small-angle swing around the X-axis and Y-axis + slight settlement in the Z-axis within a specified range (as shown in the figure for X, Y, and Z axes), thereby compensating for the angular and positional deviations of the front, rear, and side panels of the rear axle box.

[0053] The floating compensation positioning mechanism includes a central rod 40, which is prismatic in shape and floats between the corresponding slide plate 1 and the front positioning frame 23, the rear positioning frame 29, and the two lateral positioning frames 11. A second elastic frame 42 and multiple first elastic frames 41 are sleeved on the outer side of the central rod 40. The first elastic frame 41 is composed of multiple first concave sections, and adjacent concave sections are connected by outwardly protruding semi-circular arc rods. The second elastic frame 42 is composed of multiple second concave sections, and adjacent concave sections are connected by outwardly protruding arc rods. The first and second concave sections are distributed at intervals and abut against the outer side wall of the central rod 40, respectively. The arc rods are fixedly connected to the corresponding slide plate 1 and the front positioning frame 23, the rear positioning frame 29, and the two lateral positioning frames 11, respectively.

[0054] The semi-circular rod extends to the outside of the second elastic frame 42 through the through-hole provided on the second concave part, and applies a clamping force to the corresponding slide plate 1, front positioning frame 23, rear positioning frame 29 and two lateral positioning frames 11 respectively.

[0055] When the first elastic frame 41 and the second elastic frame 42 undergo elastic deformation, the semi-circular rods and arc-shaped rods that contact the slide plate 1, the front positioning frame 23, the rear positioning frame 29 and the two lateral positioning frames 11 will be subjected to a clamping force. At this time, the first concave part and the second concave part will press against the center rod 40, thereby playing a limiting role. At the same time, the arc-shaped rods located on both sides will be subjected to the clamping force of the first concave part and the second concave part, resulting in elastic deformation, which further constrains the deformation of the semi-circular rods and arc-shaped rods that contact the slide plate 1, the front positioning frame 23, the rear positioning frame 29 and the two lateral positioning frames 11, preventing them from deforming excessively and failing to play a binding role.

[0056] This structural design enables the floating compensation positioning mechanism to adaptively compensate for minor angular or positional deviations in the rear axle housing assembly through the deformation of the elastic frame. This ensures precise fit of each component, avoids internal stress and post-weld deformation caused by forced assembly, and significantly improves the overall accuracy and fatigue life of the rear axle housing.

[0057] Example 3: Based on Embodiment 1, the mounting assembly includes an adjustment frame 43 and a mounting plate 44. The adjustment frame 43 is generally L-shaped, with two sets of mutually perpendicular waist-shaped through slots 46 on its vertical and horizontal side plates. The outer surfaces of the vertical and horizontal side plates of the adjustment frame 43 are also milled with waist-shaped recesses 47 corresponding to the waist-shaped through slots 46. The mounting plate 44 is precisely fitted into the right-angle space between the vertical and horizontal side plates of the adjustment frame 43, forming a compact mounting structure. On two adjacent sides of the mounting plate 44 near the vertical and horizontal side plates of the adjustment frame 43, fixing bolts 45 are threadedly connected. The nuts of the fixing bolts 45 extend through the waist-shaped through slots 46 into the waist-shaped recesses 47. In actual use, after loosening the fixing bolts 45, the mounting plate 44 can be adjusted in a two-dimensional plane within the right-angle space of the adjustment frame 43. Because the nut of the fixing bolt 45 is located within the oblong groove 47, it can slide freely within the length of the oblong groove 47 when the mounting plate 44 moves, providing ample adjustment range. The width of the oblong through groove 46 is designed to allow the rod of the fixing bolt 45 to pass through, while preventing the nut from passing through, ensuring that the mounting plate 44 will not accidentally fall off during adjustment. After the position adjustment is completed, tighten the fixing bolt 45, and the nut is pressed firmly against the bottom surface of the oblong groove 47. The strong friction securely fixes the mounting plate 44 to the adjustment frame 43, maintaining positional stability even in vibration environments.

[0058] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A rear axle housing splicing tool, characterized by, The utility model relates to a rear axle box assembly device, including: The tool main part is used for fixing rear axle box bottom plate and rear axle box partition plate as the bearing matrix; Two lateral positioning assemblies are symmetrically distributed on the tool main part and are respectively used for fixing the left side plate and the right side plate of the rear axle box; The front positioning assembly is used for fixing the front side plate of the rear axle box; The rear positioning assembly is used for fixing the rear side plate and the cover plate of the rear axle box; Wherein, the tool main part is installed with multiple sliding assemblies for the stable sliding of the lateral positioning assembly, the front positioning assembly and the rear positioning assembly on the tool main part, and the lateral positioning assembly, the front positioning assembly and the rear positioning assembly are slidably installed between the corresponding sliding assemblies through the floating compensation positioning mechanism, for compensating the deviation of angle and position.

2. A rear axle housing point assembly fixture as in claim 1 wherein, The tool main part includes: Base frame (2); Multiple bottom plate limiting blocks (3) are fixedly installed on the base frame (2); Multiple bottom plate cushion blocks (4) are fixedly installed on the base frame (2) and are used for supporting the rear axle box bottom plate; Multiple bottom plate positioning pins (5) are fixedly installed on the base frame (2); Multiple bottom plate pressing assemblies are installed on the base frame (2) and are used for tightly fixing the rear axle box bottom plate; The partition plate positioning assembly is fixedly installed on the base frame (2) and is used for fixing the rear axle box partition plate; Wherein, the multiple bottom plate limiting blocks (3) and the multiple bottom plate positioning pins (5) cooperatively limit the position of the rear axle box bottom plate; The bottom plate pressing assembly includes: Rotary oil cylinder (6) is fixedly installed on the base frame (2); The bottom plate pressing assembly includes: The rotary oil cylinder (6) is fixedly installed on the base frame (2); The bottom plate pressing assembly includes: The main rod (8) is fixedly installed on the base frame (2), and the upper end of the main rod (8) is fixedly installed with a supporting seat (52) for supporting the rear axle box partition plate on both sides; Two pressing blocks (9) are respectively hingedly installed on the side surface of the corresponding supporting seat (52) and are driven by the first hydraulic rod (10) installed in the main rod (8); 3. A rear axle housing point assembly fixture as in claim 1 wherein, Wherein, the pressing block (9) is hinged with the main rod (8) through the connecting plate, and the output rod of the first hydraulic rod (10) is hinged with the pressing block (9), when the output rod of the first hydraulic rod (10) is stretched out, the end of the pressing block (9) away from the main rod (8) exerts downward pressing force on the rear axle box partition plate to fix the rear axle box partition plate. The lateral positioning assembly includes: The lateral positioning frame (11) is installed on the corresponding sliding assembly; The side plate positioning shaft (13) is installed on the lateral positioning frame (11) through the corresponding mounting assembly; The side plate positioning shaft (13) is installed on the lateral positioning frame (11) through the corresponding mounting assembly; A side plate positioning pin (14) is installed on the lateral positioning frame (11) through another mounting assembly; A side plate cushion block (12) is fixedly installed on the lateral positioning frame (11) and used for defining the position of the side plate of the rear axle box; A side plate pressing assembly is installed on the lateral positioning frame (11) and used for clamping and fixing the side plate of the rear axle box in cooperation with the side plate cushion block (12); A leg fixing assembly is installed on the lateral positioning frame (11) and used for fixing the leg of the rear axle box.

4. A rear axle housing point assembly fixture as in claim 3 wherein, The side plate pressing assembly comprises: A positioning plate (15) is fixedly installed on the lateral positioning frame (11), and a second hydraulic rod (16) is fixedly installed on the lateral positioning frame (11), the output rod of the second hydraulic rod (16) is hingedly connected with a hinged plate (17), a connecting strip is arranged between the middle part of the hinged plate (17) and the positioning plate (15), the two ends of the connecting strip are hingedly connected with the hinged plate (17) and the positioning plate (15) respectively, and a pressing shaft (18) is fixedly installed on the hinged plate (17).

5. A rear axle housing point assembly fixture as in claim 3 wherein, The leg fixing assembly comprises: A leg fixing plate (19) is fixedly installed on the lateral positioning frame (11), a support block (53) is fixedly installed on the side face of the leg fixing plate (19) which is away from the center of the tool body, a plurality of leg positioning pins (20) are threadedly installed on the leg fixing plate (19), a swing arm (21) is hingedly connected to the side face of the leg fixing plate (19) which is away from the center of the tool body, and a pressing bolt (22) is threadedly installed on the swing arm (21).

6. A rear axle housing point assembly fixture as in claim 1 wherein, The front positioning assembly comprises: A front positioning frame (23) is installed on the corresponding sliding assembly; A plurality of front plate positioning pins (24) are installed on the front positioning frame (23) through corresponding mounting assemblies; A plurality of front plate cushion blocks (25) are fixedly installed on the front positioning frame (23); A plurality of front plate limiting blocks (26) are fixedly installed on the front positioning frame (23) and used for defining the position of the front side plate of the rear axle box in cooperation with the front plate cushion blocks (25); A plurality of front plate pressing assemblies are installed on the front positioning frame (23) and used for fixing the front side plate of the rear axle box. The front plate pressing assembly comprises: A plurality of third hydraulic rods (27) are fixedly installed on the front positioning frame (23), and a front plate pressing block (28) is fixedly installed on the output rod of the third hydraulic rod (27).

7. A rear axle housing point assembly fixture as in claim 1 wherein, The rear positioning assembly comprises: A rear positioning frame (29) is installed on the corresponding sliding assembly; A plurality of rear plate cushion blocks (30) are fixedly installed on the rear positioning frame (29). A rear plate limiting block (31) is fixedly installed on the rear positioning frame (29) and used for limiting the position of the rear side plate of the rear axle housing in cooperation with the rear plate cushion block (30); A rear plate pressing assembly is installed on the rear positioning frame (29) and used for fixing the rear side plate of the rear axle housing; A cover plate fixing assembly is installed on the rear positioning frame (29) and used for fixing the cover plate of the rear axle housing; The rear plate pressing assembly comprises a fourth hydraulic rod (32) installed on the rear positioning frame (29), and the output rod of the fourth hydraulic rod (32) is fixedly installed with a base (33), the periphery of the base (33) is uniformly hinged with a plurality of first connecting rods (34), the end of the first connecting rod (34) away from the base (33) is inclined towards the direction away from the axis of the base (33), and is respectively hinged with a second connecting rod (35), and the end of the second connecting rod (35) away from the first connecting rod (34) is hinged with a base plate (36) fixedly installed on the rear positioning frame (29); The cover plate fixing assembly comprises an installation rod (48) hinged with a mounting seat (49) fixedly installed on the upper end of the rear positioning frame (29), the end of the installation rod (48) towards the center of the tool body is fixedly installed with a pressing shaft (50), and the side of the mounting seat (49) away from the center of the tool body is hinged with a sixth hydraulic rod (39), and the output rod of the sixth hydraulic rod (39) is hinged with the end of the installation rod (48) away from the pressing shaft (50).

8. A rear axle housing point assembly fixture as in claim 1 wherein, The sliding assembly comprises: A sliding plate (1) is slidingly connected with a sliding rail (38) fixedly installed on the tool body, and the sliding plate (1) is driven by a fifth hydraulic rod (37) installed on the tool body, the floating compensation positioning mechanism is located above the sliding plate (1), and the upper side of the sliding plate (1) is fixedly installed with a protection frame (51) made of elastic material.

9. A rear axle housing point assembly fixture as in claim 8 wherein, The floating compensation positioning mechanism comprises: A center rod (40) is in the shape of a prism, the outer side of the center rod (40) is sleeved with a second elastic frame (42) and a plurality of first elastic frames (41), and the plurality of first elastic frames (41) are sleeved in the inside of the second elastic frame (42); The first elastic frame (41) comprises a plurality of first inner recesses, and two adjacent first inner recesses are connected by an outer convex semicircular arc rod; The second elastic frame (42) comprises a plurality of second inner recesses, and two adjacent second inner recesses are connected by an outer convex arc rod; The first inner recess and the second inner recess are spaced apart and abut against the outer side wall of the center rod (40), and the semicircular arc rod extends to the outside of the second elastic frame (42) through the through hole provided on the second inner recess.

10. A rear axle housing point assembly fixture as in claims 3 or 6, wherein, The installation assembly comprises: An adjusting frame (43) is in the shape of "L" and serves as a support basis of the installation assembly; The installation plate (44) is located between the vertical side plate and the horizontal side plate of the adjusting frame (43), and the fixing bolt (45) is threadedly connected to the two side surfaces of the vertical side plate and the horizontal side plate of the adjusting frame (43), and the nut of the fixing bolt (45) extends into the waist-shaped sunken groove (47) provided on the adjusting frame (43) through the waist-shaped through groove (46) provided on the adjusting frame (43).

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