Integrated drive axle for forklift axle housing and processing technology thereof

Abstract

The application discloses a forklift axle box integrated drive axle and a processing technology thereof, which comprises an axle housing assembly, a main speed reducer and a wheel end assembly, the axle housing assembly comprises an axle cover and a half axle sleeve, the axle cover is provided with a groove corresponding to the half axle sleeve, the half axle sleeve is welded at both ends of the axle cover after being inserted into the groove, the main speed reducer is arranged in the axle housing assembly, the wheel end assembly is arranged at the end of the half axle sleeve, and the half axle sleeve is fixedly connected with a fixed base; the processing technology comprises the following steps: a, early preparation; b, assembly; c, installation of the fixed base; and d, fixation of the half axle sleeve and the axle cover; in the application, the drive axle can rotate during welding, the contact positions of the half axle sleeve and the axle cover can be welded, the welding seam and the virtual welding phenomenon are avoided, and thus the processing precision and the structural strength of the drive axle are improved.

Description

Technical Field

[0001] This invention belongs to the technical field of drive axle equipment, specifically relating to an integrated drive axle for forklift axle boxes and its processing technology. Background Technology

[0002] The forklift drive axle is a fundamental component that houses the main reducer, differential, half-shafts, wheel hubs, and suspension. Its primary function is to support the forklift's weight and withstand the road reaction forces and torques transmitted from the wheels, which are then transferred to the chassis (or body) via the suspension. The axle housing serves as a support and enclosure for components such as the main reducer, differential, and half-shafts. It contains lubricating oil to lubricate gears and bearings; the sealed housing also prevents contaminants from entering and damaging the internal components. Furthermore, the axle housing helps to fix the axial relative position of the left and right drive wheels. Meanwhile, the axle housing is also one of the main components of the running gear. The drive axle housing should have sufficient strength and rigidity, low mass, and be easy to disassemble and adjust the main reducer. It should have sufficient strength and rigidity to ensure normal meshing of the main reducer gears and not cause additional bending stress on the half shaft. Under the premise of ensuring strength and rigidity, the mass should be reduced as much as possible to improve driving smoothness, ensure sufficient ground clearance, have good structural manufacturability, low cost, protect the transmission system components mounted on it and prevent mud and water from entering, and be easy to disassemble, adjust and maintain.

[0003] In the existing technology, axle housing assemblies are usually processed in two ways: integral casting and separate welding. Integral casting facilitates the machining and shaping of the axle housing assembly by casting it as a whole. However, during the integral casting process, defects such as shrinkage cavities and porosity are prone to occur during the cooling and hardening process, resulting in low machining accuracy and affecting the mechanical properties of the casting. Separate welding involves welding the half-shaft sleeves to both ends of the axle housing. However, the contact surface between the half-shaft sleeves and the axle housing is irregular and prone to gaps, which can easily lead to weld seams and incomplete welds during the welding process. Summary of the Invention

[0004] The purpose of this invention is to solve the aforementioned technical problems existing in the prior art, and to provide an integrated drive axle for forklift axle housings and its processing technology. By opening grooves on both sides of the axle housing, fixing one end of the half-shaft sleeve to the wheel end assembly, fixing the fixing base to the half-shaft sleeve, and then inserting the other end of the half-shaft sleeve into the groove, followed by welding, the contact surface between the half-shaft sleeve and the axle housing is regular, reducing the gap between the half-shaft sleeve and the axle housing, increasing the contact area between the axle housing and the half-shaft sleeve, avoiding weld seams and incomplete welds, thereby increasing the processing accuracy and structural strength of the drive axle. In the processing, a welding table is set up. The end of the half-shaft sleeve is fixedly connected to the wheel end assembly with bolts. The clamping assembly clamps the wheel end assembly on the welding table. A rotating clamping table fixes the axle assembly in the center of the welding table. The snap-fit ​​seats are placed at both ends of the swing clamping component, which is positioned between the rotating clamping table and the clamping assembly. By setting up the clamping assembly, the rotating clamping table, and the swing clamping component, the various components of the drive axle are clamped and fixed to the welding table. After clamping and fixing the various components, the stability and accuracy during the installation process are improved. The driving clamping assembly moves towards the swing clamping component until it reaches the fixed base installation position. The swing clamping component drives the two snap-fit ​​seats to swing, so that the two snap-fit ​​seats can be clamped onto the half-shaft sleeve simultaneously. Finally, the connecting screws and locking mechanism are used to secure the clamping assembly. The nuts are used to secure the base and the axle sleeve. The clamping assembly is then moved to the bridge housing side, allowing the axle sleeve to be inserted into the corresponding groove in the bridge housing, thus connecting the bridge housing and the axle sleeve. After connection, the clamping assembly is released from the wheel end assembly and reset. The drive axle to be welded is rotated by the rotating clamping table. The rotating head and the clamping tail are used to clamp and limit the two ends of the drive axle to be welded. The swing ring is installed on the wheel end assembly near the rotating head. The connection between the axle sleeve and the bridge housing is welded using a flame welding torch. At the same time, the rotating head drives the drive axle to rotate through the swing ring, ensuring that all connection points can be welded, avoiding missed welds and incomplete welds, eliminating weld seams, improving welding accuracy, and ensuring the structural stability of the drive axle.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] This forklift axle housing uses an integrated drive axle, comprising an axle housing assembly, a main reducer, and a wheel end assembly. The axle housing assembly includes an axle housing and a half-shaft sleeve. The axle housing has grooves corresponding to the half-shaft sleeves. After the half-shaft sleeves are inserted into the grooves, they are welded to both ends of the axle housing. The main reducer is located inside the axle housing assembly, and the wheel end assembly is located at the end of the half-shaft sleeve. A fixing base is fixedly connected to the half-shaft sleeve. This invention, by creating grooves on both sides of the axle housing, fixing the wheel end assembly to one end of the half-shaft sleeve, and fixing the fixing base to the half-shaft sleeve, inserts the other end of the half-shaft sleeve into the groove, and then welding, makes the contact surface between the half-shaft sleeve and the axle housing regular, reducing the gap between them, increasing the contact area, and avoiding weld seams and incomplete welds. This increases the machining accuracy and structural strength of the drive axle.

[0007] Furthermore, the fixed base includes two mirror-shaped snap-fit ​​seats, each with a semi-circular snap-fit ​​groove. After the two snap-fit ​​seats are fixed, the two semi-circular snap-fit ​​grooves form a clamping groove, in which the half-shaft sleeve is clamped. Both ends of the snap-fit ​​seats have mounting grooves with connecting holes extending through them. The two snap-fit ​​seats are fixedly connected by connecting screws, which pass through the corresponding two connecting holes. Locking nuts are screwed into both ends of the connecting screws and tightened onto the snap-fit ​​seats. The two snap-fit ​​seats are clamped onto the half-shaft sleeve via the semi-circular snap-fit ​​grooves, and the fixed base is then secured to the half-shaft sleeve via the connecting screws and locking nuts. The mounting grooves also facilitate the tightening of the locking nuts.

[0008] The manufacturing process of an integrated drive axle for forklift axle housings includes the following steps:

[0009] a. Preliminary preparations

[0010] First, reset the welding station and clean up any debris on it. Then, prepare the necessary components for machining the drive axle.

[0011] b. Assembly

[0012] 1) Fixing of wheel end assembly

[0013] First, the end of the half-shaft sleeve is fixedly connected to the wheel end assembly with bolts. Then, the wheel end assembly is fixed on the welding table with a clamping assembly.

[0014] 2) Fixing the bridge package

[0015] The bridge package is secured using a rotary clamping table, which is vertically connected to the mounting cavity at the center of the welding platform.

[0016] 3) Fixing the card slot

[0017] Two locking seats are placed at both ends of the swing clamping component, and the corresponding clamping components of the swing clamping component are located on both sides of the rotary clamping table.

[0018] c. Installation of the fixed base

[0019] The clamping assembly is slidably connected to the welding table. The clamping assembly drives the wheel end assembly and the half shaft sleeve to slide towards the swing clamping part and move to the fixed base installation position. The swing clamping part controls the two locking seats to swing towards the half shaft sleeve, so that the two locking seats are simultaneously clamped on the half shaft sleeve and fixed by screws.

[0020] d. Fixing the half-shaft sleeve to the bridge package

[0021] 1) Docking

[0022] The clamping assembly drives the wheel end assembly and the half-shaft sleeve to slide towards the axle package side, so that the half-shaft sleeve is inserted into the corresponding groove of the axle package, and the axle package and the half-shaft sleeve are connected.

[0023] 2) Welding and forming

[0024] The clamping assembly is released and reset. The rotating clamping table drives the axle housing, half-shaft sleeve, and wheel end assembly to rotate. Then, the rotating head and the clamping tail seat are respectively clamped onto the wheel end assemblies at both ends, thereby clamping and fixing the drive axle to be welded. Next, the swing ring is installed on the wheel end assembly near the rotating head, so that the rotating head can drive the drive axle to rotate through the swing ring. Then, the rotating clamping table is controlled to descend, and the rotating head drives the drive axle to rotate. The mounting points of the half-shaft sleeve and axle housing are welded by the flame welding torch, completing the processing of the drive axle.

[0025] Furthermore, in step b, the clamping assembly includes a clamping ring, a tightening screw, and a sliding bracket. The tightening screw is circumferentially distributed on the outer wall of the clamping ring and is threadedly connected to the clamping ring. The clamping ring is fitted onto the outer side of the wheel end assembly. The end of the tightening screw passes through the clamping ring and presses against the outer wall of the wheel end assembly. The sliding bracket is located on both sides of the clamping ring and is slidably connected to the welding table. The sliding bracket drives the clamping ring to slide on the welding table. First, the clamping ring is fitted onto the outer side of the wheel end assembly. Then, by screwing in the tightening screw, the tightening screw is pressed against the wheel end assembly, thus fixing the clamping ring to the wheel end assembly. The sliding bracket can drive the clamping ring to slide the wheel end assembly on the welding table.

[0026] Furthermore, the sliding frame includes an L-shaped bracket and a sliding seat. The sliding seat is fixedly connected to the bottom of the L-shaped bracket. A sliding rail is correspondingly provided on the welding platform, and the sliding seat is slidably connected to the sliding rail. The edges of both ends of the clamping ring extend outward to form limiting portions. A fixing ring is sleeved on the outer side of the clamping ring. The inner wall of the fixing ring has an annular groove corresponding to the limiting portion. The limiting portion is located in the annular groove, allowing the clamping ring and the fixing ring to be rotatably connected. The top of the L-shaped bracket is fixedly connected to the outer wall of the fixing ring. The fixing ring has an annular groove, and the outer side of the clamping ring has a limiting portion, allowing the clamping ring to rotate within the fixing ring. Due to the tight fit between the half-shaft sleeve and the groove, it is difficult to insert the half-shaft sleeve into the groove. The clamping ring drives the wheel end assembly and the half-shaft sleeve to rotate. With the setting of the sliding seat and the sliding rail, the half-shaft sleeve can be inserted into the groove while rotating, thus facilitating the docking of the half-shaft sleeve and the bridge package.

[0027] Further, in step b, the rotating clamping table includes an electric push rod, a lifting platform, a rotating platform, and limiting components. The welding platform has a central mounting cavity matching the lifting platform. An electric push rod is located at the bottom of the mounting cavity, with its top connected to the bottom of the lifting platform. The electric push rod controls the lifting platform to move up and down within the mounting cavity. The rotating platform is located on the top surface of the lifting platform and rests against the bottom of the bridge axle. The bottoms of the limiting components are connected to both sides of the lifting platform, and their tops are clamped onto the bridge axle. The electric push rod controls the lifting platform to move up and down. During the docking process between the bridge axle and the half-shaft sleeve, the electric push rod controls the lifting platform to rise, ensuring the height of the bridge axle groove matches the half-shaft sleeve, thereby improving docking accuracy and facilitating bridge axle height adjustment, thus facilitating docking between the bridge axle and the half-shaft sleeve. When the rotating head and the clamping tail are clamped onto the wheel end assembly, the electric push rod controls the lifting platform to descend, facilitating the rotation of the drive axle to be welded and increasing welding space for the operator. The rotating platform is used to control the rotation of the bridge axle.

[0028] Furthermore, the limiting component includes an L-shaped lifting rod, a lifting screw, and a limiting clamp. Adjustment grooves are provided on both sides of the lifting platform. The lifting screw is fixedly connected to the adjustment groove, and one end of the L-shaped lifting rod is located in the adjustment groove. The lifting screw passes through one end of the L-shaped lifting rod, and adjusting nuts are screwed into both ends of the lifting screw. The adjusting nuts are tightened onto the L-shaped lifting rod. The top of the limiting clamp is clamped onto the bridge package, and the bottom of the limiting clamp is rotatably connected to the top of the L-shaped lifting rod. The limiting component is used to limit the bridge package on the rotary clamping platform. When the bridge package is aligned with the half-shaft sleeve, the limiting clamp rotates towards the bridge package, causing the limiting clamp to hook the bridge package onto the rotary platform. When the rotary platform controls the bridge package to rotate, the limiting clamp releases the bridge package, allowing the rotary platform to drive the drive axle to rotate.

[0029] Furthermore, in step b, the swing clamping component includes a lifting base and a swing frame. The lifting base is fixedly connected to the welding table, and the swing frame is fixedly connected to the lifting base. A rotating shaft is rotatably connected to the swing frame. Swing platforms are provided on both sides of the swing frame, and swing arms are fixed to the swing platforms. The swing arms are fixedly connected to the rotating shaft. The swing platforms are used to place the locking seats. Limiting platforms are connected to both sides of the swing frame corresponding to the swing platforms. The limiting platforms abut against the bottom of the swing platforms, driving the swing platforms to swing the locking seats. The limiting platforms play a limiting role on the swing platforms, allowing the locking seats to be placed stably on the swing platforms. The lifting base provides a height adjustment function for the swing frame, improving the installation accuracy of the locking seats. When assembling the fixed base, the lifting base drives the swing frame to rise, driving the swing platforms to rotate the locking seats towards the half-shaft sleeve side, so that the locking seats are locked onto the half-shaft sleeve. Then, the swing platform is controlled to reset and abut against the limiting platforms. After the fixed base is installed, the lifting base controls the swing frame to descend, avoiding contact between the wheel end assembly and the swing frame, thus improving the safety of the drive axle assembly.

[0030] Further, in step d, the swing ring includes two mirror-mounted retaining rings, each with a fixing block. The upper and lower end faces of the fixing blocks have stepped holes, and the front and rear end faces of the fixing blocks have semi-circular insertion holes. The two retaining rings are fastened to the outer wall of the wheel end assembly. Fastening bolts are screwed into the brackets corresponding to the stepped holes of the two fixing blocks. Fastening nuts are screwed into both ends of the fastening bolts, and the fastening nuts are tightened in the stepped holes. At the same time, the two semi-circular insertion holes are combined to form a closed insertion hole. The rotating head seat includes a slider, a slide rail, a turntable, and a support. The slide rail is fixedly connected to the welding table, the slider is slidably connected to the slide rail, and the support is fixedly connected to the slider. The turntable is rotatably connected to the support near the center of the welding table. The end face of the turntable near the center of the welding table has a groove. Adjusting blocks are slidably connected to both ends of the groove. A plug rod is fixedly connected to the adjusting block and inserted into the insertion hole. A tightening part is fixedly connected to the center of the turntable and abuts against the end of the wheel end assembly located at one end. After the rotating clamping table controls the rotation of the corresponding rotating head and clamping tail of the drive axle to be welded, the rotating head and clamping tail are clamped to both ends of the drive axle. Then, the corresponding rotating head installs the swing ring on the wheel end assembly at the corresponding end, so that the two retaining rings clamp the wheel end assembly. At the same time, the closed insertion hole composed of two semi-circular insertion holes is sleeved on the outside of the insertion rod. When the turntable rotates, it drives the insertion rod to rotate, and the insertion rod drives the swing ring to rotate. The swing ring controls the drive axle to be welded to rotate, thereby facilitating the tight welding of the drive axle.

[0031] Further, in step d, the tightening tailstock includes a second slide rail, a second slider, a second support, and a tightening component. The second slide rail is fixedly connected to the welding table corresponding to the first slide rail. The second slider is slidably connected to the second slide rail. The second support is fixedly connected to the second slider. The tightening component includes a tightening seat, a rotating disk, and a tightening part two. The tightening seat is fixedly connected to the second support. The tightening seat contains a telescopic screw. The end of the telescopic screw near the center of the welding table is connected to the tightening part two. The rotating disk is connected to the end of the tightening seat away from the center of the welding table. The rotating disk drives the telescopic screw to rotate, thereby controlling the telescopic screw to drive the tightening part two to extend and retract. The tightening part two abuts against the end of the wheel end assembly located at the other end. By driving the telescopic screw to rotate through the rotating disk, the tightening part two is controlled to extend and retract, so that the tightening part two can abut against one end of the drive axle. First, the second slider is controlled to slide along the second slide rail, so that the tightening part two initially abuts against the end of the drive axle. Then, the rotating disk is driven, so that the tightening part two precisely fits against the end of the drive axle.

[0032] The present invention, by adopting the above-described technical solution, has the following beneficial effects:

[0033] This invention creates grooves on both sides of the axle housing, fixes one end of the wheel end assembly to the half-shaft sleeve, and fixes the fixing base to the half-shaft sleeve. Then, the other end of the half-shaft sleeve is inserted into the groove and welded. This makes the contact surface between the half-shaft sleeve and the axle housing regular, reduces the gap between the half-shaft sleeve and the axle housing, increases the contact area between the axle housing and the half-shaft sleeve, and avoids weld seams and incomplete welds. This increases the processing accuracy and structural strength of the drive axle.

[0034] In step d of this invention, the swing ring includes two mirror-arranged retaining rings, each with a fixing block. The upper and lower end faces of the fixing blocks have stepped holes, and the front and rear end faces of the fixing blocks have semi-circular insertion holes. The two retaining rings are fastened to the outer wall of the wheel end assembly. Fastening bolts are screwed into the brackets corresponding to the stepped holes of the two fixing blocks. Fastening nuts are screwed into both ends of the fastening bolts and are tightened in the stepped holes. At the same time, the two semi-circular insertion holes are combined to form a closed insertion hole. The rotating head seat includes a slider, a slide rail, a turntable, and a support. The slide rail is fixedly connected to the welding table, the slider is slidably connected to the slide rail, and the support is fixedly connected to the slider. The turntable is rotatably connected to the support near the center of the welding table. The end face of the turntable near the center of the welding table has a groove. Adjusting blocks are slidably connected to both ends of the groove. A plug rod is fixedly connected to the adjusting block and inserted into the insertion hole. A tightening part is fixedly connected to the center of the turntable and abuts against the end of the wheel end assembly located at one end. After the rotating clamping table controls the rotation of the corresponding rotating head and clamping tail of the drive axle to be welded, the rotating head and clamping tail are clamped to both ends of the drive axle. Then, the corresponding rotating head installs the swing ring on the wheel end assembly at the corresponding end, so that the two retaining rings clamp the wheel end assembly. At the same time, the closed insertion hole composed of two semi-circular insertion holes is sleeved on the outside of the insertion rod. When the turntable rotates, it drives the insertion rod to rotate, and the insertion rod drives the swing ring to rotate. The swing ring controls the drive axle to be welded to rotate, thereby facilitating the tight welding of the drive axle. Attached Figure Description

[0035] The present invention will be further described below with reference to the accompanying drawings:

[0036] Figure 1 This is a schematic diagram of the integrated drive axle for forklift axle housings of the present invention;

[0037] Figure 2 This is a schematic diagram of the structure of the fixed support in this invention;

[0038] Figure 3 This is a schematic diagram of the card connector structure in this invention;

[0039] Figure 4 This is a schematic diagram of the welding station after all components have been clamped.

[0040] Figure 5 This is a schematic diagram of the structure of the present invention after the fixed support and the half-shaft sleeve have been assembled.

[0041] Figure 6 This is a schematic diagram of the structure of the present invention at the connection between the bridge package and the half-shaft sleeve;

[0042] Figure 7 This is a schematic diagram of the structure of the present invention when the rotating head controls the rotation of the drive axle;

[0043] Figure 8 This is a schematic diagram of the welding station in this invention;

[0044] Figure 9 This is a schematic diagram of the sliding frame in this invention;

[0045] Figure 10 This is a schematic diagram of the clamping ring structure in this invention;

[0046] Figure 11 This is a schematic diagram of the swing clamping component in this invention;

[0047] Figure 12 This is a schematic diagram of the rotating clamping stage in this invention;

[0048] Figure 13 This is a schematic diagram of the swing ring structure in this invention;

[0049] Figure 14 This is a schematic diagram of the retaining ring in this invention;

[0050] Figure 15 This is a schematic diagram of the rotating headstock in this invention;

[0051] Figure 16 This is a schematic diagram of the structure of the clamping tailstock in this invention.

[0052] In the diagram, 1-bridge housing assembly; 2-wheel end assembly; 3-bridge housing; 4-half shaft sleeve; 5-groove; 6-fixed base; 7-clamping seat; 8-semi-circular clamping groove; 9-clamping groove; 10-mounting groove; 11-connecting hole; 12-connecting screw; 13-locking nut; 14-welding table; 15-clamping assembly; 16-rotary clamping table; 17-swinging clamping component; 18-rotary head seat; 19-tightening tail seat; 20-swinging ring; 21-clamping ring; 22-tightening screw; 23-sliding frame; 24-L-shaped bracket; 25-sliding seat; 26-sliding rail; 27-limiting part; 28-fixing ring; 29-annular groove; 30-limiting component; 31-lifting platform; 32-Rotating table; 33-Mounting cavity; 34-L-shaped lifting rod; 35-Lifting screw; 36-Limit clamp; 37-Adjusting groove; 38-Securing part two; 39-Lifting base; 40-Swing frame; 41-Rotating shaft; 42-Swing table; 43-Swing arm; 44-Limiting platform; 45-Snap ring; 46-Fixing block; 47-Step hole; 48-Semi-circular insertion hole; 49-Fasting bolt; 50-Insertion hole; 51-Slider one; 52-Slide rail one; 53-Turntable; 54-Support one; 55-Slide groove; 56-Adjusting block; 57-Insertion rod; 58-Securing part one; 59-Slide rail two; 60-Slider two; 61-Support two; 62-Securing seat; 63-Rotating disk. Detailed Implementation

[0053] like Figures 1 to 3As shown, this invention relates to an integrated drive axle for forklift axles, comprising an axle housing assembly 1, a main reducer, and a wheel end assembly 2. The axle housing assembly 1 includes an axle housing 3 and a half-shaft sleeve 4. The axle housing 3 has grooves 5 corresponding to the half-shaft sleeve 4. The half-shaft sleeve 4 is inserted into the grooves 5 and then welded to both ends of the axle housing 3. The main reducer is located inside the axle housing assembly 1, and the wheel end assembly 2 is located at the end of the half-shaft sleeve 4. A fixing base 6 is fixedly connected to the half-shaft sleeve 4. This invention, by creating grooves 5 on both sides of the axle housing 3, fixing the wheel end assembly 2 to one end of the half-shaft sleeve 4, fixing the fixing base 6 to the half-shaft sleeve 4, and then inserting the other end of the half-shaft sleeve 4 into the grooves 5 and then welding, makes the contact surface between the half-shaft sleeve 4 and the axle housing 3 regular, reducing the gap between the half-shaft sleeve 4 and the axle housing 3, while increasing the contact area between the axle housing 3 and the half-shaft sleeve 4, avoiding weld seams and incomplete welds, thereby increasing the processing accuracy and structural strength of the drive axle.

[0054] The fixed base 6 includes two mirror-shaped snap-fit ​​seats 7. Each snap-fit ​​seat 7 has a semi-circular snap-fit ​​groove 8. After the two snap-fit ​​seats 7 are fixed, the two semi-circular snap-fit ​​grooves 8 form a clamping groove 9, in which the half-shaft sleeve 4 is clamped. Both ends of the snap-fit ​​seats 7 have mounting grooves 10, through which connecting holes 11 pass. The two snap-fit ​​seats 7 are fixedly connected by connecting screws 12, which pass through the corresponding two connecting holes 11. Both ends of the connecting screws 12 are screwed with locking nuts 13, which are tightened onto the snap-fit ​​seats 7. The two snap-fit ​​seats 7 are clamped onto the half-shaft sleeve 4 through the semi-circular snap-fit ​​grooves 8, and the fixed base 6 and the half-shaft sleeve 4 are fixed by the connecting screws 12 and the locking nuts 13. At the same time, the mounting grooves 10 facilitate the tightening of the locking nuts 13.

[0055] like Figures 4 to 16 The diagram shows the manufacturing process of the integrated drive axle for forklift axle housings of the present invention, which includes the following steps:

[0056] a. Preliminary preparations

[0057] First, reset the welding station 14 and clean the debris on the welding station 14. Then, prepare the corresponding components required for the processing of the drive axle.

[0058] b. Assembly

[0059] 1) Fixing of wheel end assembly 2

[0060] First, the end of the half-shaft sleeve 4 is fixedly connected to the wheel end assembly 2 by bolts. Then, the wheel end assembly 2 is fixed to the welding table 14 by clamping assembly 15. Clamping assembly 15 includes clamping ring 21, tightening screw 22 and sliding bracket 23. The tightening screw 22 is circumferentially distributed on the outer wall of clamping ring 21. The tightening screw 22 is threadedly connected to clamping ring 21. Clamping ring 21 is sleeved on the outer side of the end of wheel end assembly 2. The end of tightening screw 22 passes through clamping ring 21 and is tightened against the outer wall of wheel end assembly 2. Sliding bracket 23 is located on both sides of clamping ring 21. Sliding bracket 23 is slidably connected to welding table 14. Sliding bracket 23 drives clamping ring 21 to slide on welding table 14. First, the clamping ring 21 is fitted onto the outside of the wheel end assembly 2. Then, by screwing in the tightening screw 22, the tightening screw 22 is pressed against the wheel end assembly 2, thus fixing the clamping ring 21 to the wheel end assembly 2.

[0061] 2) Fixing of bridge package 3

[0062] The bridge apron 3 is fixed by a rotating clamping table 16, which is connected to the central mounting cavity 33 on the welding table 14. The rotating clamping table 16 includes an electric push rod, a lifting table 31, a rotating table 32, and a limiting member 30. The center of the welding table 14 is provided with a mounting cavity 33 that matches the lifting table 31. The bottom of the mounting cavity 33 is provided with an electric push rod, the top of which is connected to the bottom of the lifting table 31. The electric push rod controls the lifting table 31 to move up and down within the mounting cavity 33. The rotating table 32 is located on the top surface of the lifting table 31 and rests against the bottom of the bridge apron 3. The bottom of the limiting member 30 is connected to both sides of the lifting table 31, and the top of the limiting member 30 is clamped onto the bridge apron 3. The limiting component 30 includes an L-shaped lifting rod 34, a lifting screw 35, and a limiting clamp 36. Both sides of the lifting platform 31 are provided with adjustment grooves 37. The lifting screw 35 is fixedly connected in the adjustment groove 37. One end of the L-shaped lifting rod 34 is located in the adjustment groove 37. The lifting screw 35 passes through one end of the L-shaped lifting rod 34. Adjusting nuts are screwed into both ends of the lifting screw 35. The adjusting nuts are tightened on the L-shaped lifting rod 34. The top of the limiting clamp 36 is clamped on the bridge 3. The bottom of the limiting clamp 36 is rotatably connected to the top of the L-shaped lifting rod.

[0063] 3) Fixing of the card slot 7

[0064] Two locking seats 7 are placed at both ends of the swing clamping member 17, and the swing clamping member 17 is located on both sides of the rotating clamping table 16 corresponding to the clamping assembly 15. The swing clamping member 17 includes a lifting base 39 and a swing frame 40. The lifting base 39 is fixedly connected to the welding table 14, and the swing frame 40 is fixedly connected to the lifting base 39. A rotating shaft 41 is rotatably connected to the swing frame 40. Swing platforms 42 are provided on both sides of the swing frame 40. A swing arm 43 is fixed to the swing platform 42 and is fixedly connected to the rotating shaft 41. The swing platform 42 is used to place the locking seats 7. Limiting platforms 44 are connected to both sides of the swing frame 40 corresponding to the swing platform 42. The limiting platforms 44 abut against the bottom of the swing platform 42, driving the swing platform 42 to drive the locking seats 7 to swing. The limiting platform 44 acts as a limiter on the swing platform 42, allowing the locking seat 7 to be placed stably on the swing platform 42. The lifting base 39 adjusts the height of the swing frame 40, improving the installation accuracy of the locking seat 7.

[0065] c. Installation of fixed base 6

[0066] The clamping assembly 15 is slidably connected to the welding table 14. The clamping assembly 15 drives the wheel end assembly 2 and the half-shaft sleeve 4 to slide towards the swing clamping member 17 and move to the installation position of the fixed base 6. The swing clamping member 17 controls the two locking seats 7 to swing towards the half-shaft sleeve 4, so that the two locking seats 7 are simultaneously locked onto the half-shaft sleeve 4 and fixed by screws. When the fixed base 6 is assembled, the lifting base 39 drives the swing frame 40 to rise, drives the swing table 42 to rotate the locking seats 7 towards the half-shaft sleeve 4, so that the locking seats 7 are locked onto the half-shaft sleeve 4. Then, the swing table 42 is controlled to reset and abut against the limiting table 44. After the fixed base 6 is installed, the lifting base 39 controls the swing frame 40 to descend, avoiding the wheel end assembly 2 from colliding with the swing frame 40 and improving the safety of the drive axle assembly.

[0067] d. Fixing the half-shaft sleeve 4 to the bridge package 3

[0068] 1) Docking

[0069] The clamping assembly 15 drives the wheel end assembly 2 and the half-shaft sleeve 4 to slide towards the bridge package 3, so that the half-shaft sleeve 4 is inserted into the corresponding groove 5 of the bridge package 3, so that the bridge package 3 and the half-shaft sleeve 4 are connected; the sliding frame 23 includes an L-shaped bracket and a sliding seat. The sliding seat is fixedly connected to the bottom of the L-shaped bracket. The welding table 14 is provided with a corresponding sliding rail. The sliding seat is slidably connected to the sliding rail. The edges of both ends of the clamping ring 21 extend outward to form a limiting part. A fixing ring is sleeved on the outer side of the clamping ring 21. The inner wall of the fixing ring is provided with an annular groove corresponding to the limiting part. The limiting part is located in the annular groove, so that the clamping ring 21 and the fixing ring are rotatably connected. The top of the L-shaped bracket is fixedly connected to the outer wall of the fixing ring. The fixed ring has an annular groove, and the outer side of the clamping ring 21 has a limiting part, allowing the clamping ring 21 to rotate within the fixed ring. Due to the tight fit between the half-shaft sleeve 4 and the groove 5, it is difficult for the half-shaft sleeve 4 to be inserted into the groove 5. The clamping ring 21 drives the wheel end assembly 2 and the half-shaft sleeve 4 to rotate. With the help of the sliding seat and the slide rail, the half-shaft sleeve 4 can be inserted into the groove 5 while rotating, thus facilitating the docking of the half-shaft sleeve 4 and the bridge package 3. When the bridge package 3 and the half-shaft sleeve 4 are docked, the limiting clamp 36 rotates to one side of the bridge package 3, so that the limiting clamp 36 hooks the bridge package 3 onto the rotating table 32.

[0070] 2) Welding and forming

[0071] The clamping assembly 15 releases the wheel end assembly 2 and resets, and the limiting clamp 36 releases the bridge package 3, allowing the rotary table 32 to drive the drive axle to rotate. The rotary clamping table 16 drives the bridge package 3, the half-shaft sleeve 4, and the wheel end assembly 2 to rotate. Then, the rotating head seat 18 and the clamping tail seat 19 are respectively clamped onto the wheel end assemblies 2 at both ends, thereby clamping and fixing the drive axle to be welded. Next, the swing ring 20 is installed on the wheel end assembly 2 near the rotating head seat 18, so that the rotating head seat 18 can drive the drive axle to rotate through the swing ring 20. Then, the rotary clamping table 16 is controlled to descend, and the rotating head seat drives the drive axle to rotate. The mounting points of the half-shaft sleeve 4 and the bridge package 3 are welded by the flame welding torch, completing the processing of the drive axle. The tightening tailstock 19 includes a second slide rail 59, a second slider 60, a second support 61, and a tightening component. The second slide rail 59 is fixedly connected to the welding table 14 corresponding to the first slide rail. The second slider 60 is slidably connected to the second slide rail 59, and the second support 61 is fixedly connected to the second slider 60. The tightening component includes a tightening seat 62, a rotating disk 63, and a tightening part 38. The tightening seat 62 is fixedly connected to the second support 61. A telescopic screw is provided inside the tightening seat 62. The end of the telescopic screw near the center of the welding table 14 is connected to the tightening part 38. The rotating disk 63 is connected to the end of the tightening seat 62 away from the center of the welding table 14. The rotating disk 63 drives the telescopic screw to rotate, thereby controlling the telescopic screw to drive the tightening part 38 to extend and retract. The tightening part 38 abuts against the end of the wheel end assembly 2 located at the other end. By driving the telescopic screw to rotate through the rotating disk 63, the tightening part 38 is controlled to extend and retract, so that the tightening part 38 can abut against one end of the drive axle. First, control the slider 2 60 to slide along the slide rail 2 59 so that the clamping part 2 38 initially abuts against the end of the drive axle. Then, drive the rotating disk 63 so that the clamping part 2 38 is precisely fitted against the end of the drive axle.The swing ring 20 includes two mirror-arranged retaining rings 45, each with a fixing block 46. Stepped holes 47 penetrate the upper and lower end faces of the fixing blocks 46, and semi-circular insertion holes 48 penetrate the front and rear end faces of the fixing blocks 46. The two retaining rings 45 are fastened to the outer wall of the wheel end assembly 2. Fastening bolts 49 are screwed into the brackets corresponding to the stepped holes 47 of the two fixing blocks 46. Fastening nuts are screwed into both ends of the fastening bolts 49, and the fastening nuts are tightened within the stepped holes 47. Simultaneously, the two semi-circular insertion holes 48 combine to form a closed insertion hole 50. The rotating head base 18 includes a slider 51, a slide rail 52, and a turntable. 53 and support 54, slide rail 52 are fixedly connected to welding table 14, slider 51 is slidably connected to slide rail 52, support 54 is fixedly connected to slider 51, turntable 53 is rotatably connected to support 54 near the center of welding table 14, the end face of turntable 53 near the center of welding table 14 is provided with slide groove 55, the two ends of slide groove 55 are slidably connected with adjusting block 56, the adjusting block 56 is fixedly connected with plug rod 57, plug rod 57 is inserted into plug hole 50, the center of turntable 53 is fixedly connected with tightening part 58, tightening part 58 abuts against the end of wheel end assembly 2 located at one end. After the rotating clamping table 16 controls the rotation of the corresponding rotating head seat 18 and the clamping tail seat 19 of the drive axle to be welded, the rotating head seat 18 and the clamping tail seat 19 are clamped at both ends of the drive axle. Then, the corresponding rotating head seat 18 installs the swing ring 20 on the wheel end assembly 2 at the corresponding end, so that the two retaining rings 45 clamp the wheel end assembly 2. At the same time, the closed insertion hole 50 composed of two semi-circular insertion holes 48 is sleeved on the outside of the insertion rod 57. When the turntable 53 rotates, it drives the insertion rod 57 to rotate. The insertion rod 57 drives the swing ring 20 to rotate. The swing ring 20 controls the drive axle to be welded to rotate, thereby facilitating the tight welding of the drive axle.

[0072] This invention uses a welding table 14 to clamp and fix each component required for the processing of the drive axle, and then installs and fixes them one by one. Finally, the drive axle is limited by rotating the head seat 18 and tightening the tail seat 19. The drive axle is rotated by rotating the head seat 18, so that the drive axle can rotate during the welding process. This ensures that the contact positions between the half-shaft sleeve 4 and the axle housing 3 can be welded, avoiding the occurrence of weld seams and incomplete welds, thereby increasing the processing accuracy and structural strength of the drive axle.

[0073] The above are merely specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on the present invention to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of the present invention.

Claims

1. The processing technology of the integrated drive axle for the forklift axle box, the drive axle comprises an axle housing assembly, a main reducer and a wheel end assembly, the axle housing assembly comprises an axle cover and a half shaft sleeve, the axle cover is provided with a groove corresponding to the half shaft sleeve, the half shaft sleeve is welded at both ends of the axle cover after being inserted into the groove, the main reducer is arranged in the axle housing assembly, the wheel end assembly is arranged at the end of the half shaft sleeve, and a fixed base is fixedly connected on the half shaft sleeve; the fixed base comprises two mirror image clamping seats, the clamping seat is provided with a semicircular clamping groove, after the two clamping seats are fixed, the two semicircular clamping grooves form a clamping groove, the half shaft sleeve is clamped in the clamping groove, both ends of the clamping seat are provided with mounting grooves, the mounting grooves are penetrated by connecting holes, the two clamping seats are fixedly connected through connecting screws, the connecting screws pass through the corresponding two connecting holes, the both ends of the connecting screw are screwed into locking nuts, and the locking nuts are screwed on the clamping seat; characterized in that The processing technology comprises the following steps: a. preliminary preparation First, the welding table is reset, and the sundries on the welding table are cleaned, and then the corresponding parts required for drive axle processing are prepared; b. assembly 1) fixing of the wheel end assembly First, the end of the half shaft sleeve is fixedly connected with the wheel end assembly through bolts, and then the wheel end assembly is fixed on the welding table through the clamping assembly; 2) fixing of the bridge package The bridge package is fixed through the rotary clamping table, which is connected in the center of the installation cavity on the welding table; 3) fixing of the clamping seat Two clamping seats are respectively placed at the two ends of the swing clamping piece, and the swing clamping piece is arranged on the two sides of the rotary clamping table corresponding to the clamping assembly; c. installation of the fixed base The clamping assembly is slidably connected on the welding table, and the clamping assembly drives the wheel end assembly and the half shaft sleeve to slide to one side of the swing clamping piece, and then moves to the fixed base installation position. The swing clamping piece controls the two clamping seats to swing to one side of the half shaft sleeve, so that the two clamping seats are clamped on the half shaft sleeve at the same time, and are fixed through the screw rod; The clamping assembly comprises a clamping ring, a tightening screw and a sliding frame, the tightening screw is circumferentially distributed on the outer side wall of the clamping ring, the tightening screw is threadedly connected with the clamping ring, the clamping ring is sleeved on the outer side of the end of the wheel end assembly, the end of the tightening screw is tightly arranged on the outer side wall of the wheel end assembly after penetrating through the clamping ring, the sliding frame is arranged on the two sides of the clamping ring, the sliding frame is slidably connected on the welding table, and the sliding frame drives the clamping ring to slide on the welding table; the sliding frame comprises an L-shaped support and a sliding seat, the sliding seat is fixedly connected on the bottom of the L-shaped support, a sliding rail is correspondingly arranged on the welding table, the sliding seat is slidably connected on the sliding rail, the edges of the two ends of the clamping ring extend outward to form a limiting portion, a fixing ring is sleeved on the outer side of the clamping ring, an annular groove is formed in the inner wall of the fixing ring corresponding to the limiting portion, the limiting portion is arranged in the annular groove, so that the clamping ring is rotatably connected with the fixing ring, and the top of the L-shaped support is fixedly connected with the outer side wall of the fixing ring; the swing clamping piece comprises a lifting base and a swing frame, the lifting base is fixedly connected on the welding table, the swing frame is fixedly connected on the lifting base, a rotating shaft is rotatably connected on the swing frame, swing tables are arranged on the two sides of the swing frame, swing arms are fixed on the swing tables, the swing arms are fixedly connected with the rotating shaft, the swing tables are used for placing the clamping seats, limiting tables are connected on the two sides of the swing table corresponding to the swing table, the limiting tables abut against the bottom of the swing table, and the swing table drives the clamping seat to swing; d. fixing of the half shaft sleeve and the bridge package 1) butt joint The clamping assembly drives the wheel end assembly and the half shaft sleeve to slide to one side of the bridge package, so that the half shaft sleeve is inserted into the corresponding groove of the bridge package, and the bridge package and the half shaft sleeve are butt jointed; 2) welding forming The clamping assembly loosens the wheel end assembly and resets, rotates the clamping table to drive the axle housing, half shaft sleeve and wheel end assembly to rotate, and then rotates the head seat and the tail tight seat to be tightly pressed on the wheel end assembly at both ends, so as to tightly press and fix the drive axle to be welded. Secondly, the swing ring is installed on the wheel end assembly near the rotating head seat, so that the rotating head seat can drive the drive axle to rotate through the swing ring. Then control the rotating clamping table to descend, and the rotating head seat drives the drive axle to rotate. Through the flame welding gun, the installation points of the half shaft sleeve and the axle housing are welded, and the processing of the drive axle is completed.

2. The machining process of an integrated drive axle for a forklift axle carrier according to claim 1, characterized in that: In the step b, the rotating clamping table comprises an electric push rod, a lifting table, a rotating table and a limiting piece. The center of the welding table is provided with a mounting cavity matched with the lifting table. The bottom of the mounting cavity is provided with the electric push rod. The top of the electric push rod is connected with the bottom of the lifting table. The electric push rod controls the lifting table to ascend and descend in the mounting cavity. The rotating table is arranged on the top surface of the lifting table. The rotating table abuts against the bottom of the axle housing. The bottom of the limiting piece is connected with the two sides of the lifting table respectively. The top of the limiting piece is clamped on the axle housing.

3. The machining process of an integrated drive axle for a fork truck axle housing according to claim 2, wherein: The limiting piece comprises an L-shaped lifting rod, a lifting screw and a limiting clamp. The two sides of the lifting table are provided with adjusting grooves. The lifting screw is fixedly connected in the adjusting grooves. One end of the L-shaped lifting rod is arranged in the adjusting groove. The lifting screw passes through one end of the L-shaped lifting rod. The two ends of the lifting screw are screwed into adjusting nuts. The adjusting nuts are screwed on the L-shaped lifting rod. The top of the limiting clamp is clamped on the axle housing. The bottom of the limiting clamp is rotatably connected with the top of the L-shaped lifting rod.

4. The machining process of an integrated drive axle for a fork truck axle housing according to claim 1, wherein: In the step d, the swing ring comprises two mirror image clamping rings. The two clamping rings are provided with fixed blocks. The upper and lower end faces of the fixed blocks are penetrated by stepped holes. The front and rear end faces of the fixed blocks are penetrated by semicircular insertion holes. The two clamping rings are clamped on the outer side wall of the wheel end assembly. The stepped holes of the two fixed blocks are screwed into fastening bolts. The two ends of the fastening bolts are screwed into fastening nuts. The fastening nuts are screwed into the stepped holes. Meanwhile, the two semicircular insertion holes are combined to form a closed insertion hole. The rotating head seat comprises a sliding block one, a sliding rail one, a rotating disc and a support one. The sliding rail one is fixedly connected on the welding table. The sliding block one is slidingly connected on the sliding rail one. The support one is fixedly connected on the sliding block one. The rotating disc is rotatably connected on the support one near the center of the welding table. The end face of the rotating disc near the center of the welding table is provided with a sliding groove. The two ends of the sliding groove are slidingly connected with adjusting blocks. The adjusting blocks are fixedly connected with insertion rods. The insertion rods are inserted into the insertion holes. The center of the rotating disc is fixedly connected with a first pressing part. The first pressing part abuts against the end of the wheel end assembly at one end.

5. The machining process of an integrated drive axle for a fork truck axle housing according to claim 1, wherein: In the step d, the top tight tailstock includes slide rail two, sliding block two, support two and top tight part, the slide rail two is fixedly connected on the welding table, the sliding block two is slidably connected on the slide rail two, the support two is fixedly connected on the sliding block two, the top tight part includes top tight seat, rotating disc and top tight part two, the top tight seat is fixedly connected on the support two, the top tight seat is internally provided with telescopic screw rod, the telescopic screw rod is connected with the top tight part two at the end close to the center of the welding table, the rotating disc is connected at the end of the top tight seat away from the center of the welding table, the rotating disc drives the telescopic screw rod to rotate, thereby controlling the telescopic screw rod to drive the top tight part two to extend or retract, and the top tight part two abuts against the end of the wheel end assembly at the other end.

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