Axle wheel edge combined part and half shaft shell combined part assembling guide structure and assembling method of axle wheel edge combined part and half shaft shell combined part

Abstract

The invention discloses an axle wheel edge assembly and half shaft shell assembly guiding structure and an assembly method thereof. The assembly guiding structure comprises a guiding device, a wheel edge assembly and a half shaft shell assembly. A guide sleeve of the guide device penetrates into a center hole of the wheel edge combining piece, and a transmission shaft of a universal transmission shaft assembly in the half shaft shell combining piece penetrates into the guide sleeve of the guide device. The guide device comprises a guide sleeve, the guide sleeve is a stepped metal pipe fitting with the same inner diameter and different outer diameters, and the inner surface and the outer surface of the guide sleeve are machined. The guide sleeve is adopted to replace the method that in the prior art, an axle wheel edge combination piece is directly and mechanically pressed into a universal transmission shaft of a half shaft shell combination piece to be assembled, the phenomena that the surfaces of shafts are scratched and a drive fork shaft oil seal of the wheel edge combination piece is cut in the assembling process in the past are eradicated, and it is guaranteed that the shafts are intact in the installing process; and the problem of poor sealing caused by early damage of the conventional oil seal is effectively solved. And meanwhile, the device can also be popularized and applied to installation of other mechanical products with similar structures.

Description

Technical Field

[0001] The invention belongs to the field of agricultural machinery, and relates to an assembly guide structure of an axle wheel side assembly and axle housing assembly for agricultural machinery, and in particular to an assembly guide structure of an axle wheel side assembly and axle housing assembly and an assembly method thereof. Background Art

[0002] Agricultural machinery axles occupy an important position in the entire agricultural machinery host. In order to ensure the product manufacturing quality and installation quality of the axles, the installation of various axle components has very strict requirements. In the assembly of the existing technology, the most difficult part is to assemble the axle wheel side parts and the axle half-axle shell parts. The method often used in the production workshop is to mechanically press the axle wheel side parts directly onto the universal joint shaft of the half-axle shell parts. As a result, the edge of the spline at the front end of the universal joint shaft of the half-axle shell will cut the oil seal of the drive fork shaft of the wheel side parts during assembly, which can easily reduce the sealing effect and cause the oil seal of the drive fork shaft of the wheel side parts to be damaged prematurely and cause oil leakage, which brings a lot of difficulties to the user's use, and also brings a lot of trouble to the company's after-sales service.

[0003] Based on the above situation, in order to solve these problems, after many designs and experiments, we provide an assembly guide structure for agricultural machinery axle wheel side parts and half-axle housing parts, which is used in the assembly of agricultural machinery axle wheel side parts and half-axle housing parts, and the specific assembly method is optimized. After many tests and verifications, good use effect has been achieved. Summary of the invention

[0004] The purpose of the present invention is to provide a compact, easy-to-use, safe and reliable guide structure for assembling axle wheel rim parts and half-axle housing parts. The guide structure is made according to the size of the central components of the axle wheel rim parts and the half-axle housing parts, and is assembled according to the preferred assembly method.

[0005] The present invention can achieve the above-mentioned purpose through the following technical scheme: an assembly guide structure of an axle wheel side assembly and a half-axle housing assembly, comprising: a guide device, a wheel side assembly, and a half-axle housing assembly; the guide sleeve of the guide device is inserted into the center hole of the wheel side assembly, and the transmission shaft of the universal joint transmission shaft assembly in the half-axle housing assembly is inserted into the guide sleeve of the guide device; the guide device comprises: a guide sleeve, the guide sleeve is a stepped metal pipe with the same inner diameter and different outer diameters, and the inner and outer surfaces are processed to form a thick end and a thin end, and the length a of the thick end is ≧ the horizontal length of the assembly composed of the ring gear, the ring gear support, and the ring gear retaining ring; the outer diameter b of the thick end is greater than the bushing aperture length at the center of the left steering knuckle: the length c of the thin end is greater than the bushing aperture length at the center of the left steering knuckle, and the outer diameter d of the thin end can slide with the clearance inside the bushing aperture at the center of the left steering knuckle.

[0006] The wheel side assembly comprises: a gear ring, a gear ring support, a gear ring retaining ring, an O-type rubber sealing ring, a wheel hub bolt, a wheel hub, a wheel hub bearing, a front wheel hub oil seal, a left steering knuckle, a drive fork shaft oil seal, a bushing, a flange plate, and bolts; the gear ring is mounted on the gear ring support and is used to form a assembly with the gear ring retaining ring; the O-type rubber sealing ring is mounted on the stepped outer circle of the wheel hub, the wheel hub bolts are connected to the wheel hub, large and small holes are arranged in the wheel hub, two wheel hub bearings are mounted in the small hole in the wheel hub and are mounted on the small step outer circle of the left steering knuckle, the front wheel hub oil seal is mounted in the large hole in the wheel hub and is mounted on the large step outer circle of the left steering knuckle; the two drive fork shaft oil seals are sequentially pressed in parallel in the outermost shaft hole of the short fork shaft at one end of the left steering knuckle close to the universal transmission shaft assembly, the flange plate is mounted in the stepped hole in the gear ring support, the bolts are mounted on the gear ring support and the left steering knuckle, and the bushing is pressed in the corresponding shaft hole at the outer end of the left steering knuckle.

[0007] The half-shaft housing assembly includes: universal transmission shaft assembly, half-shaft bearing seat, elastic retaining ring for hole, elastic retaining ring for shaft, left half-shaft housing, deep groove ball rolling bearing, all-metal hexagonal nut, bearing seat limit screw, bearing seat O-ring, rotating shaft lip seal, front axle kingpin ball joint pair; the half-shaft bearing seat is equipped with a deep groove ball rolling bearing to form the half-shaft bearing seat assembly, which is installed in the left half-shaft housing together with the universal transmission shaft assembly, and the elastic retaining ring for hole is installed on the half-shaft bearing The circlip of the shaft is installed in the outer circular groove of the step of the long fork shaft of the universal joint transmission shaft assembly. The full metal hexagonal nut and the bearing seat limit screw are used together to fix the half-shaft bearing seat in the aperture of the left half-shaft housing. The O-ring of the bearing seat is installed in the outer circular groove of the half-shaft bearing seat. The two rotating shaft lip seals are installed in parallel in the small-diameter hole wall at one end of the half-shaft bearing seat. Two pairs of front axle kingpin ball joints are installed on the left half-shaft housing respectively.

[0008] The universal transmission shaft assembly comprises a short fork shaft, a cross shaft, a double fork, and a long fork shaft; the short fork shaft and the long fork shaft are partially movably connected with the double fork through two cross shafts.

[0009] The guide structure for assembling the axle wheel side assembly and the half-axle housing assembly also needs to be installed in the following way: The first step is to assemble the basic components of the guide structure for assembling the wheel side assembly and the half-axle housing assembly, and first select the guide device that matches the wheel side assembly and the half-axle housing assembly; The second step is to install the guide device as a whole with the thick end outside and the thin end inside into the center hole of the wheel edge fitting; The third step is to align the short fork shaft of the universal joint shaft assembly of the half-shaft housing assembly with the center hole of the guide sleeve of the guide device; Step 4: slowly push the short fork shaft of the universal joint shaft assembly into the center hole of the guide sleeve, and then the short fork shaft and the guide sleeve move outward along the center hole together; Step 5: After the short fork shaft and the guide sleeve have completed their outward displacement along the center hole, stop; Step 6. Remove the guide sleeve from the short fork shaft to complete the installation.

[0010] The present invention can achieve the following positive effects after adopting the above technical solution: Compared with the prior art assembly of the wheel side assembly of the axle and the half-axle housing assembly, the present invention adopts a guide sleeve with a simple structure, easy manufacture and convenient operation, replacing the prior art method of directly mechanically pressing the wheel side assembly of the axle onto the universal transmission shaft of the half-axle housing assembly, eliminating the previous phenomenon of scratches on the surface of the shaft and cuts on the oil seal of the wheel side assembly driving fork shaft during assembly, not only ensuring that the shaft is intact during the installation process, but also effectively solving the previous problem of poor sealing caused by early damage to the oil seal. At the same time, it can also be promoted and applied to the installation of other mechanical products with similar structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the assembly guide structure of the axle wheel side assembly and the half-axle housing assembly of the present invention; Figure 2 A schematic diagram of the structure of the guide device for assembling the guide structure of the axle wheel side assembly and the half-axle housing assembly of the present invention; Figure 3 A schematic diagram of the structure of the axle wheel side assembly and the half-axle housing assembly of the axle wheel side assembly and the half-axle housing assembly of the present invention; Figure 4 It is a structural schematic diagram of the initial stage of the assembly guide structure of the axle wheel side assembly and the half-axle housing assembly of the present invention; Figure 5 This is one of the structural schematic diagrams of the present invention during the assembly guide structure of the axle wheel side assembly and the half-axle housing assembly; Figure 6 This is a second structural schematic diagram of the present invention during the assembly guide structure of the axle wheel side assembly and the half-axle housing assembly; Figure 7 It is a structural schematic diagram of the present invention when the assembly guide structure of the axle wheel side assembly and the half-axle housing assembly is completed; Figure 8 This is a structural schematic diagram of removing the guide device after the guide structure assembly work of the axle wheel side assembly and the half-axle housing assembly of the present invention is completed.

[0012] In the figure: 1-guide sleeve, 2-gear ring, 3-gear ring support, 4-gear ring retaining ring, 5-O-type rubber sealing ring, 6-wheel hub bolt, 7-wheel hub, 8-wheel hub bearing, 9-front wheel hub oil seal, 10-universal drive shaft assembly, 11-semi-axle bearing seat, 12-elastic gasket for hole, 13-elastic gasket for shaft, 14-left semi-axle housing, 15-deep groove ball rolling bearing, 16-all-metal hexagonal nut, 17-bearing seat limit screw, 18-bearing seat O-type sealing ring, 19-rotating shaft lip sealing ring, 20-front axle kingpin ball joint pair, 21-left steering knuckle, 22-drive fork shaft oil seal, 23-bushing, 24-flange plate, 25-bolt; 10.1-short fork shaft, 10.2-cross shaft, 10.3-double fork, 10.4-long fork shaft; A-guide device, B-wheel rim assembly, C-axle housing assembly. DETAILED DESCRIPTION

[0013] The present invention will be further described below in conjunction with the accompanying drawings and embodiments: Figure 1-8 As shown, this embodiment takes the assembly of the wheel side assembly and the half-axle housing assembly of the axle axle machinery as an example. The assembly guide structure of the wheel side assembly and the half-axle housing assembly of the axle axle machinery mainly includes three parts: the guide device A, the wheel side assembly B, and the half-axle housing assembly C; wherein the guide sleeve 1 of the guide device A is a stepped metal pipe with the same inner diameter and different outer diameters, and the inner and outer surfaces are processed and divided into a thick end and a thin end. The length a of the thick end is ≧ the horizontal length of the assembly composed of the gear ring 2, the gear ring support 3, and the gear ring retaining ring 4: the outer diameter b of the thick end is greater than the aperture of the bushing 23 in the center of the left steering knuckle 21: the length c of the thin end is greater than the aperture length of the bushing 23 in the center of the left steering knuckle 21, and the outer diameter d of the thin end can slide with the aperture of the bushing 23 in the center of the left steering knuckle 21.

[0014] The wheel side assembly B includes: a gear ring 2, a gear ring support 3, a gear ring retaining ring 4, an O-type rubber sealing ring 5, a wheel hub bolt 6, a wheel hub 7, a wheel hub bearing 8, a front wheel hub oil seal 9, a left steering knuckle 21, a drive fork shaft oil seal 22, a bushing 23, a flange plate 24, and bolts 25.

[0015] The half-shaft housing assembly C includes: a universal joint transmission shaft assembly 10, a half-shaft bearing seat 11, an elastic retaining ring for the hole 12, an elastic retaining ring for the shaft 13, a left half-shaft housing 14, a deep groove ball rolling bearing 15, an all-metal hexagonal nut 16, a bearing seat limit screw 17, a bearing seat O-ring 18, a rotating shaft lip seal 19, and a front axle kingpin ball joint pair 20; in addition, the universal joint transmission shaft assembly 10 includes a short fork shaft 10.1, a cross shaft 10.2, a double fork 10.3, and a long fork shaft 10.4; the short fork shaft 10.1 and the long fork shaft 10.4 are partially movably connected to the double fork 10.3 through two cross shafts 10.2.

[0016] Overall installation ideas: The guide sleeve 1 of the guide device A penetrates into the center hole of the bushing of the wheel side assembly B, and the short fork shaft 10.1 of the universal joint transmission shaft assembly 10 in the half-axle housing assembly C penetrates into the guide sleeve 1 of the guide device A.

[0017] Split installation ideas: Installation of wheel side assembly B: install the ring gear 2 on the ring gear support 3, and then fix it with the ring gear retaining ring 4 to form a assembly; then install the O-type rubber sealing ring 5 on the stepped outer circle of the wheel hub 7, which plays a sealing role in the assembly of the planetary carrier and the wheel hub 7. The wheel hub bolt 6 is connected to the wheel hub 7. A large hole and a small hole are arranged in the wheel hub 7. Two wheel hub bearings 8 are installed in the small hole in the wheel hub 7 and are also installed on the small step outer circle of the left steering knuckle 21. The front wheel hub oil seal 9 is installed in the large hole in the wheel hub 7 and is also installed on the large step outer circle of the left steering knuckle 21. The two drive fork shaft oil seals 22 are sequentially pressed in parallel in the outermost shaft hole of the left steering knuckle 21 near the end of the short fork shaft (10.1) of the universal transmission shaft assembly 10, the flange plate 24 is installed in the step hole in the gear ring support 3, the bolt 25 is installed on the gear ring support 3 and the left steering knuckle 21, and the bushing 23 is pressed in the corresponding shaft hole at the outer end of the left steering knuckle 21.

[0018] Installation of the half-shaft housing assembly C: install a deep groove ball rolling bearing 15 in the half-shaft bearing seat 11 to form a half-shaft bearing seat assembly, and install it into the left half-shaft housing 14 together with the universal joint transmission shaft assembly 10; then install the elastic retaining ring 12 for the hole in the groove of the large-diameter hole wall at one end of the half-shaft bearing seat 11, and install the elastic retaining ring 13 for the shaft in the stepped outer circular ring groove of the long fork shaft 10.4 of the universal joint transmission shaft assembly 10. The all-metal hexagonal nut 16 and the bearing seat limit screw 17 are used together to fix the half-shaft bearing seat 11 in the aperture of the left half-shaft housing 14. The bearing seat O-ring 18 is installed in the outer circular ring groove of the half-shaft bearing seat 11 to seal between the outer circle of the half-shaft bearing seat 11 and the aperture of the left half-shaft housing 14. Two rotating shaft lip seals 19 are sequentially installed in parallel in the small-diameter hole wall at one end of the half-shaft bearing seat 11, and play a sealing role between the inner circle of the half-shaft bearing seat 11 and the outer circle of the root of the long fork shaft 10.4 of the universal transmission shaft assembly 10. Two pairs of front axle kingpin ball joints 20 are respectively installed on the left half-shaft housing 14. They cooperate with the two kingpins to enable the left steering knuckle 21 to achieve rotation and reciprocating movement. The left steering knuckle 21 is one of the main parts of the wheel side assembly B, and plays the main roles of support, connection, movement, etc. in the wheel side assembly B. Two drive fork shaft oil seals 22 are sequentially pressed and installed in parallel in the outermost shaft hole of the left steering knuckle 21 near one end of the short fork shaft (10.1) of the universal transmission shaft assembly 10, and play a sealing role between the inner hole of the left steering knuckle 21 and the outer circle section of the root of the short fork shaft (10.1) of the universal transmission shaft assembly 10. The bushing 23 is pressed into the corresponding shaft hole at the secondary outer end of the left steering knuckle 21 by a special tool, which plays the role of assisting the wheel side rotation and reciprocating movement. The flange plate 24 is installed in the corresponding step hole in the ring gear support 3, which plays the role of assisting in pressing the ring gear support 3. The bolt 25 is installed on the ring gear support 3 and the left steering knuckle 21 by an electric gun. Previously, the ring gear support 3 and the left steering knuckle 21 have been pressed together by the bushing 23 with interference fit, so that the ring gear support 3 and the left steering knuckle 21 are firmly fixed.

[0019] The guide structure for assembling the axle wheel side assembly and the half-axle housing assembly also needs to be installed in the following way: The first step is to assemble the basic components of the guide structure for assembling the wheel side parts and the half-axle housing parts, and select the guide device A, the wheel side parts B, and the half-axle housing parts C; Figure 2 , Figure 3 shown.

[0020] The second step is to press the guide device A as a whole with the thick end outside and the thin end inside into the center hole of the wheel edge fitting B; Figure 1 shown.

[0021] The third step is to align the short fork shaft 10.1 at the center of the universal transmission shaft assembly 10 of the half-axle housing assembly C with the center hole of the guide sleeve 1 of the guide device A; Figure 4 shown.

[0022] The fourth step is to press the short fork shaft 10.1 at the center of the universal transmission shaft assembly 10 into the center hole of the guide sleeve 1, and then the short fork shaft 10.1 and the guide sleeve 1 move outwards along the center hole. Specifically, the outward displacement is completed from the contact between the driving fork shaft oil seal and the small end outer circle of the guide sleeve 1 to the contact between the driving fork shaft oil seal and the root of the small step outer circle of the short fork shaft 10.1. Figure 5 , Figure 6 shown.

[0023] The fifth step is to continue to move outward, that is, from the contact between the drive fork shaft oil seal and the root of the small step outer circle of the short fork shaft 10.1 of the universal transmission shaft assembly 10, to the contact between the drive fork shaft oil seal and the rear of the large step outer circle of the short fork shaft 10.1, the outward displacement is completed and stopped; Figure 7 shown.

[0024] Step 6: Remove the guide sleeve 1. At this time, the center line of the two holes on the left steering knuckle 21 coincides with the center line of the two front axle kingpin ball joints 20, and the installation is complete. Figure 8 shown.

[0025] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the entire content of the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still make formal modifications to the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features. Any formal modifications, equivalent replacements, etc. made within the scope of the present invention shall be included in the protection scope of the present invention.

Claims

1. An assembly guide structure for axle wheel side parts and axle housing parts, comprising: A guide device (A), a wheel side assembly (B), and a half-axle housing assembly (C); characterized in that: the guide sleeve (1) of the guide device (A) is inserted into the center hole of the wheel side assembly (B), and the transmission shaft of the universal transmission shaft assembly (10) in the half-axle housing assembly (C) is inserted into the guide sleeve (1) of the guide device (A); the guide device (A) comprises: a guide sleeve (1), the guide sleeve (1) is a stepped metal pipe with the same inner diameter and different outer diameters, the inner and outer surfaces are processed, and the guide sleeve (1) is divided into a thick end and a thin end, and the length a of the thick end is ≧the horizontal length of the assembly composed of the gear ring (2), the gear ring support (3), and the gear ring retaining ring (4); the outer diameter b of the thick end is greater than the aperture of the bushing (23) at the center of the left steering knuckle (21); the length c of the thin end is greater than the aperture length of the bushing (23) at the center of the left steering knuckle (21), and the outer diameter d of the thin end can slide with the clearance inside the aperture of the bushing (23) at the center of the left steering knuckle (21).

2. The assembly guide structure of the axle wheel side assembly and the half-axle housing assembly according to claim 1, characterized in that: The wheel edge assembly (B) comprises: a gear ring (2), a gear ring support (3), a gear ring retaining ring (4), an O-type rubber sealing ring (5), a wheel hub bolt (6), a wheel hub (7), a wheel hub bearing (8), a front wheel hub oil seal (9), a left steering knuckle (21), a drive fork shaft oil seal (22), a bushing (23), a flange plate (24), and a bolt (25); the gear ring (2) is mounted on the gear ring support (3) and is used with the gear ring retaining ring (4) to form a assembly; the O-type rubber sealing ring (5) is mounted on the stepped outer circle of the wheel hub (7), the wheel hub bolt (6) is connected to the wheel hub (7), a large hole and a small hole are arranged in the wheel hub (7), and two wheel hub bearings ( 8) is internally mounted at the small hole in the wheel hub (7) and externally mounted on the small step outer circle of the left steering knuckle (21); the front wheel hub oil seal (9) is internally mounted at the large hole in the wheel hub (7) and externally mounted on the large step outer circle of the left steering knuckle (21); two drive fork shaft oil seals (22) are sequentially pressed in parallel in the outermost shaft hole of the short fork shaft (10.1) of the left steering knuckle (21) close to the universal transmission shaft assembly (10); the flange plate (24) is mounted in the step hole in the gear ring support (3); the bolt (25) is installed on the gear ring support (3) and the left steering knuckle (21); and the bushing (23) is pressed in the corresponding shaft hole at the outer end of the left steering knuckle (21).

3. The assembly guide structure of the axle wheel side assembly and the half-axle housing assembly according to claim 1, characterized in that: The half-shaft housing assembly (C) comprises: a universal joint transmission shaft assembly (10), a half-shaft bearing seat (11), a hole elastic retaining ring (12), a shaft elastic retaining ring (13), a left half-shaft housing (14), a deep groove ball rolling bearing (15), an all-metal hexagonal nut (16), a bearing seat limit screw (17), a bearing seat O-type sealing ring (18), a rotating shaft lip sealing ring (19), and a front axle kingpin ball joint pair (20); the half-shaft bearing seat (11) is equipped with a deep groove ball rolling bearing (15) to form a half-shaft bearing seat assembly, which is installed into the left half-shaft housing (14) together with the universal joint transmission shaft assembly (10), and the hole elastic retaining ring (12) is installed. In the groove of the large-diameter hole wall at one end of the half-shaft bearing seat (11), the shaft elastic retaining ring (13) is installed in the stepped outer ring groove of the long fork shaft (10.4) of the universal transmission shaft assembly (10), and the full metal hexagonal nut (16) and the bearing seat limit screw (17) are used together to fix the half-shaft bearing seat (11) in the hole diameter of the left half-shaft housing (14). The bearing seat O-type sealing ring (18) is installed in the outer ring groove of the half-shaft bearing seat (11). Two rotating shaft lip sealing rings (19) are installed in sequence in parallel in the small-diameter hole wall at one end of the half-shaft bearing seat (11). Two pairs of front axle kingpin ball joint pairs (20) are respectively installed on the left half-shaft housing (14).

4. The assembly guide structure of the axle wheel side assembly and the half-axle housing assembly according to claim 3 is characterized in that: The universal transmission shaft assembly (10) comprises a short fork shaft (10.1), a cross shaft (10.2), a double fork (10.3), and a long fork shaft (10.4); the short fork shaft (10.1) and the long fork shaft (10.4) are partially movably connected to the double fork (10.3) via two cross shafts (10.2).

5. The assembly guide structure of the axle wheel side assembly and the half-axle housing assembly as claimed in claim 1 is characterized in that: The assembly steps are as follows: The first step is to assemble the basic components of the guide structure for assembling the wheel side assembly and the half-axle housing assembly, and first select the guide device (A) that matches the wheel side assembly (B) and the half-axle housing assembly (C); The second step is to install the guide device (A) as a whole into the center hole of the wheel edge fitting (B) with the thick end outside and the thin end inside; The third step is to align the short fork shaft (10.1) of the universal joint shaft assembly (10) of the half-shaft housing assembly (C) with the center hole of the guide sleeve 1 of the guide device (A); Step 4: slowly push the short fork shaft (10.1) of the universal joint shaft assembly (10) into the center hole of the guide sleeve 1, and then the short fork shaft (10.1) and the guide sleeve (1) move outward along the center hole together; Step 5: After the short fork shaft (10.1) and the guide sleeve (1) have completed their outward displacement along the center hole, they stop; Step 6. Remove the guide sleeve (1) from the short fork shaft (10.1) to complete the installation.

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