Rear axle hub mounting structure, mining dump truck and rear axle hub mounting method

Abstract

The invention discloses a rear axle hub mounting structure. The rear axle hub mounting structure comprises an adapter, a locking ring and a locking block, an inner cavity structure is formed in the adapter in the axial direction, a first inner mounting face and a second inner mounting face are formed in the two sides of the inner cavity structure in the circumferential direction, a second outer mounting face is formed in one side of the outer circumferential face of the adapter in the circumferential direction, and adapter threaded holes evenly distributed in the circumferential direction are formed in the left side end face of the adapter. The locking ring is of an annular structure, a kerf is formed in the outer circumferential face in the radial direction, a plurality of locking ring through holes are formed in the end face, a third outer mounting face is arranged on the outer side of the locking ring, first studs are mounted in the locking ring through holes, and the second inner mounting face and the third outer mounting face are in contact fit; the locking block is provided with a vertical face and an end face, the end face is provided with a locking block through hole, the vertical face is provided with a fourth outer mounting face, and the second stud penetrates through the locking block through hole to be connected to the adapter threaded hole. The invention further discloses a mining dump truck and a rear axle hub mounting method. The device is easy to install and maintain and can be matched with tires of different sizes.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of rim mounting of mine dump trucks, and particularly relates to a rear axle hub mounting structure, a mine dump truck and a rear axle hub mounting method. BACKGROUND

[0002] The tire carrying capacity of a mine dump truck is in a proportional relationship with the size of the tire, and a large-size tire needs to be matched with a large-diameter rim. For a product with a fixed driving axle and driving wheel, if the dump truck is increased in load, a larger-size tire needs to be used, and accordingly, a larger-diameter rim needs to be matched. When the hub is replaced, the existing hub assembly structure is complex, and it is time-consuming and laborious to install or disassemble, and even the hub assembly may be damaged. SUMMARY

[0003] The application aims to provide a rear axle hub mounting structure, a mine dump truck and a rear axle hub mounting method, which are simple to install and maintain and can match different sizes of tires.

[0004] To achieve the above-mentioned purpose, the technical solution used by the application is as follows: The rear axle hub mounting structure comprises an adapter seat, a locking ring and a locking block. The adapter seat forms an inner cavity structure along the axial direction. First and second inner mounting surfaces are formed on both sides of the inner cavity structure along the circumferential direction. A second outer mounting surface is formed on the outer circumferential surface of the adapter seat along the circumferential direction. Threaded holes of the adapter seat are uniformly distributed on the left end surface along the circumferential direction. The locking ring is in an annular structure. A slit is arranged on the outer circumferential surface of the locking ring along the radial direction. A plurality of through holes of the locking ring are arranged on the end surface. A third outer mounting surface is arranged on the outer side of the locking ring. First threaded rods are arranged in the through holes of the locking ring. The second inner mounting surface and the third outer mounting surface are in contact. The locking block is provided with a vertical surface and an end surface. A through hole of the locking block is arranged on the end surface. A fourth outer mounting surface is arranged on the vertical surface. Second threaded rods are arranged in the through hole of the locking block and connected to the threaded holes of the adapter seat.

[0005] Further, a spacer is provided, which is in a cylindrical structure and is sleeved on the outer side of the adapter seat.

[0006] Further, a groove is arranged on the outer circumferential surface of the adapter seat along the axial direction.

[0007] Further, the first and second inner mounting surfaces, the second and third outer mounting surfaces and the fourth outer mounting surface are all in conical surfaces, and the conical angles are equal.

[0008] The utility model provides a mine dump truck, which comprises a wheel shaft of a wheel rim and a driving wheel, wherein the wheel rim comprises a wheel rim body, a flange structure is formed in a cavity on one side of the wheel rim body, and a third inner mounting surface extending in a circumferential direction is arranged on an inner side of the flange structure; a first outer mounting surface extending in a circumferential direction is arranged on an outer circumferential surface of the wheel shaft, a taper angle of the first outer mounting surface is the same as that of the first inner mounting surface, and a plurality of wheel shaft threaded holes uniformly distributed in a circumferential direction are arranged on an end surface of the wheel shaft; an adapter seat is sleeved on the wheel shaft in a cavity structure, a first stud is connected in the wheel shaft threaded hole, the first inner mounting surface is in contact with the first outer mounting surface, and a second outer mounting surface is arranged on the adapter seat; the adapter seat is connected between the two wheel rim bodies, and a fourth outer mounting surface and a third inner mounting surface are in contact.

[0009] Preferably, a partition ring is arranged between the two wheel rim bodies.

[0010] Preferably, a bend joint is connected to the cavity of the wheel rim body, a groove is arranged on an outer circumferential surface of the adapter seat in an axial direction, the bend joints of the two hubs are respectively connected to a first valve rod and a second valve rod, and the first valve rod passes through the groove of the adapter seat.

[0011] A rear axle hub mounting method comprises the following steps: The wheel shaft is connected to the rear axle by means of a bolt, and the wheel rim is sleeved on the wheel shaft; the adapter seat and a locking ring are axially sleeved on the wheel shaft, the third outer taper surface of the locking ring and the second inner taper surface of the adapter seat are in contact, the first stud is connected to the threaded hole by passing through the through hole of the locking ring, and the first nut is locked on the first stud; The partition ring is sleeved on the outer side of the adapter seat, another wheel rim is arranged on the left side of the partition ring, the left side wheel rim pushes the partition ring, the partition ring pushes the right side wheel rim, and the first outer taper surface of the wheel shaft is in contact with the third inner taper surface of the right side wheel rim. The second stud is arranged in the threaded hole of the adapter seat, the locking block is arranged on the left side of the adapter seat, the fourth outer taper surface of the locking block and the third inner taper surface of the left side wheel rim are in contact, the second stud is sleeved on the through hole of the locking block, and the second nut is locked on the second stud to fix the left side wheel rim on the adapter seat.

[0012] Preferably, the locking ring and the wheel shaft are axially compressed by means of the first stud, so that the third outer taper surface and the second inner taper surface are in contact and compressed, the first outer taper surface and the first inner taper surface are compressed, and then the adapter seat is fixedly connected to the wheel shaft; the adapter seat is axially compressed on the wheel shaft; the fourth outer mounting surface taper surface and the third inner taper surface of the left side wheel rim are in contact and compressed by means of the axial compression force of the second stud and the second nut on the locking block, the third inner taper surface of the right side wheel rim and the second outer mounting surface are completely compressed, and then the left side wheel rim, the partition ring and the second wheel rim are compressed on the adapter seat, so that the left side wheel rim is fixedly connected to the adapter seat.

[0013] Preferably, when the wheel rim needs to be disassembled, the locking block is removed, and the wheel rim and the partition ring are disassembled one by one; when the wheel rim is reassembled, the wheel rim, the partition ring and the locking block are assembled one by one.

[0014] The technical effects of the present application include: The rim mounting structure of the mine dump truck is simple and reliable, the rim mounting and dismounting are simple, different sizes of rims can be replaced and mounted without modifying the original driving wheel, thereby matching different sizes of tires, and further improving the carrying capacity of the mine dump truck; in addition, the studs and nuts of the locking ring and the locking block are installed on the outer side, which is easy to check, dismount and mount, and the maintenance is simple.

[0015] The nut axially compresses the locking ring, correspondingly, the third outer cone surface and the second inner cone surface are in contact and compressed, the adapter seat is axially compressed on the driving wheel, that is, the first outer cone surface and the first inner cone surface are completely compressed. Further, the adapter seat and the driving wheel are integrally fixedly connected and have the ability to transmit torque. Similarly, the nut axially compresses the locking block, correspondingly, the fourth outer cone surface and the mounting inner cone surface of the left rim are in contact and compressed, the left rim, the spacer ring and the right rim are axially compressed on the adapter seat, that is, the mounting inner cone surface of the right rim and the second outer cone surface are completely compressed, and further the rim, the spacer ring and the adapter seat are integrally fixedly connected, thereby having the ability to transmit torque. When the driving wheel rotates, it can drive the adapter seat to rotate integrally, and further drive the rim to rotate integrally, that is, drive the tire to rotate integrally.

[0016] The present application does not modify the original driving structure, the structure is simple and reliable, the installation and dismounting of the rim are simple, and the fixing nuts of the locking ring and the locking block are on the outer side, which is easy to check and maintain. When the rim needs to be dismounted, the rim and the spacer ring can be dismounted one by one by dismounting the locking block. When reinstalling the rim, the rim, the spacer ring and the locking block can be installed one by one. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is the axonometric view of the mine dump truck in the present application; Figure 2 is the A view in Figure 1 (not showing the tire); Figure 3 is the K-K sectional view in Figure 2 (not showing the tire); Figure 4 is the S local enlarged view in Figure 3 (not showing the tire); Figure 5(a) is the axonometric view of the adapter seat in the present application; Figure 5(b) is the sectional view of the adapter seat in the present application; Figure 6(a) is the axonometric view of the locking ring in the present application; Figure 6(b) is the sectional view of the locking ring in the present application.

[0018] Figure 7(a) is an isometric view of the locking block in this invention; Figure 7(b) is a front view of the locking block in this invention.

[0019] 1-Mining dump truck; 2-Rear axle; 3-Axle, 3a-First outer conical surface, 3b-Axle threaded hole; 4-Adapter, 4a-First inner conical surface, 4b-Second inner conical surface, 4c-Second outer conical surface, 4d-Threaded hole of adapter, 4e-Groove; 5-Locking ring, 5a-Third outer conical surface, 5b-Locking ring through hole, 5c-Slit; 6-Locking block, 6a-Fourth outer conical surface, 6b-Locking block through hole; 7-Rim, 71-Rim body, 71a-Inner conical surface for mounting; 8-Tire; 9-Spacer ring; 10-Elbow joint; 11-Valve stem; 12-Valve stem; 13- Bolt (fastening component); 14- First stud (fastening component); 15- First nut (fastening component); 16- Second stud (fastening component); 17- Second nut (fastening component); X- Central axis. Detailed Implementation

[0020] The following description fully illustrates specific embodiments of the invention to enable those skilled in the art to practice and reproduce them.

[0021] In the following description, the direction along the central axis X is called the axial direction; the tangent direction at any point rotating around the central axis X is called the circumferential direction; the direction that intersects the central axis X and is perpendicular to the central axis X is called the radial direction; the left and right directions of the rear axle 2 are called the left side and the right side.

[0022] like Figure 1 The figure shown is an axonometric drawing of the mining dump truck 1 in this invention; as shown Figure 2 As shown, is Figure 1 View A in the middle; such as Figure 3 As shown, is Figure 2 KK section view in the image; such as Figure 4 As shown, is Figure 3 The S-shaped magnified view in the image.

[0023] Mining dump truck 1 typically uses a two-front-four-rear tire arrangement. This implementation plan only describes the rim mounting structure and installation method of the left drive wheel 3 of the rear axle 2.

[0024] The rear axle 2 is provided with a wheel shaft 3 of a driving wheel on each side, and the wheel shaft 3 is connected to the rear axle 2 in a manner of being rotatable around the central axis X by means of a bolt 13. A first outer taper surface 3a is provided on the outer circumferential surface of the wheel shaft 3 in a circumferential direction, and the taper angle of the first outer taper surface 3a is directed to the left side. A plurality of wheel shaft threaded holes 3b are uniformly distributed on the end surface of the wheel shaft 3 in a circumferential direction, and a first stud 14 is arranged in the wheel shaft threaded hole 3b, so as to connect the wheel shaft 3 and the rim 7 through the first stud 14, thereby realizing the connection of the driving wheel and the wheel shaft 3.

[0025] Embodiment 1 The embodiment provides a rim body 71 of a rim 7, and a flange structure extending to the central axis direction of the rim body is formed in the inner cavity of one side of the rim body 71, and a third inner mounting surface extending in a circumferential direction is formed on the inner side of the flange structure.

[0026] It should be noted that the mounting surface is an inclined plane, a curved surface or an irregularly shaped surface, and the mounting surface is arranged to cooperate with the rear axle hub mounting structure for hub replacement and installation, and therefore any shape of the mounting surface that can cooperate with the hub 7 mounting structure is acceptable.

[0027] The embodiment provides a rim body 71 of a rim 7, and a flange structure extending to the central axis direction of the rim body is formed in the inner cavity of one side of the rim body 71, and a third inner mounting surface extending in a circumferential direction is formed on the inner side of the flange structure.

[0028] Embodiment 2 The embodiment is based on the rim 7 provided in the embodiment 1, and provides a rear axle hub mounting structure, which comprises a adapter seat 4, a locking ring 5 and a locking block 6.

[0029] As shown in FIG. 5(a), it is an axonometric view of the adapter seat 4 in the application; as shown in FIG. 5(b), it is a sectional view of the adapter seat 4 in the application.

[0030] The adapter seat 4 is a cylindrical structure, and an inner cavity structure is formed in the axial direction. First and second inner mounting surfaces are formed on both sides of the inner cavity structure in a circumferential direction. A second outer mounting surface is formed on one side of the outer circumferential surface of the adapter seat 4 in a circumferential direction, and a groove 4e is arranged on the outer circumferential surface in an axial direction. A plurality of adapter seat threaded holes 4d are uniformly distributed on the left end surface in a circumferential direction.

[0031] The adapter seat 4 is sleeved on the wheel shaft 3 and located on the inner side of the rim body 71, and is connected to the rim bodies 71 of two adjacent rims 7. The inner cavity structure is sleeved on the wheel shaft 3, the first inner mounting surface is in contact with the first outer taper surface 3a of the wheel shaft 3, and the adapter seat 4 is limited in the axial direction.

[0032] As shown in FIG. 6(a), it is an axonometric view of the locking ring in the application; as shown in FIG. 6(b), it is a sectional view of the locking ring in the application.

[0033] The locking ring 5 has a ring structure with multiple locking ring through holes 5b on its end face and a third outer mounting surface on its outer side. The locking ring 5 is fitted onto the wheel axle 3, and the third outer mounting surface abuts against the second inner mounting surface of the adapter 4. The third outer mounting surface of the locking ring 5 contacts and engages with the second inner mounting surface of the adapter 4, thus fixing the locking ring 5 to the wheel axle 3 (the first stud 14 passes through the locking ring through hole 5b and connects to the threaded hole 3b), thereby achieving a fixed connection between the adapter 4 and the wheel axle 3.

[0034] Figure 7(a) shows an isometric view of the locking block in this invention; Figure 7(b) shows a front view of the locking block in this invention.

[0035] The locking block 6 has a front face and an end face. The end face has a locking block through hole 6b, and the front face has a fourth outer mounting surface. The front face of the locking block 6 is fitted onto the outside of the adapter 4, and the fourth outer mounting surface abuts against the third inner mounting surface of the rim body 71. The second stud 16 passes through the locking block through hole 6b and connects to the threaded hole 4d of the adapter 4, connecting the locking block 6 and the adapter 4. Through the contact and engagement between the fourth outer mounting surface and the third inner mounting surface of the rim body 71, the locking block 6 is fixedly connected to the adapter 4, thereby axially limiting the pair of rims 7.

[0036] The spacer ring 9 is a cylindrical structure. It is installed between the rim bodies 71 of two adjacent rims 7, located on the outside of the adapter seat 4, and serves to support and separate the two adjacent rims 7.

[0037] It should be noted that the outer mounting surface and the inner mounting surface in this embodiment can be a sloping plane, a curved surface or an irregularly shaped surface. The purpose of setting the mounting surface is to cooperate with the rear axle wheel hub mounting structure for wheel hub replacement and installation. Therefore, any shape of mounting surface that can realize the rear axle wheel hub installation is acceptable. Specifically, in this embodiment, the first inner mounting surface, the first outer mounting surface, the third outer mounting surface, the second inner mounting surface, the second outer mounting surface, the third inner mounting surface, and the fourth outer mounting surface are all conical structures with equal cone angles.

[0038] As an example, in this embodiment, such as Figure 1 , Figure 3 As shown, axles 3 are respectively provided on both sides of the rear axle 2. The axles 3 are connected to the rear axle 2 by means of bolts 13 so that they can rotate around the central axis X, thereby realizing the power output of the rear axle 2. It should be noted that the axle 3 has a first outer conical surface 3a arranged circumferentially on its outer circumferential surface, and threaded holes 3b evenly distributed circumferentially on its left end face. The cone angle of the first outer conical surface 3a faces to the left.

[0039] like Figure 4, 5(a), 5(b), the adapter seat 4, which protrudes from the outer peripheral surface of the wheel shaft 3 and extends in a ring shape along the circumferential direction of the wheel shaft 3, has a first inner taper surface 4a and a second inner taper surface 4b arranged on both sides of the inner cavity in the circumferential direction, a second outer taper surface 4c arranged on one side of the outer peripheral surface in the circumferential direction, and a threaded hole 4d arranged on the other side end surface in the circumferential direction, and a groove 4e arranged on the outer peripheral surface in the axial direction. It should be noted that, in order to facilitate the installation and removal of the second stud 16, the adapter seat threaded hole 4d on the adapter seat 4 is located on the outside of the adapter seat. The first inner taper surface 4a has a taper angle facing the left side, the second inner taper surface 4b has a taper angle facing the right side, and the second outer taper surface 4c faces the left side. The adapter seat 4 is axially fitted on the wheel shaft 3 until the first inner taper surface 4a contacts the first outer taper surface 3a of the wheel shaft 3, thereby achieving axial rightward limiting of the adapter seat 4.

[0040] As shown in Figure 3 , 4 , 6(a), 6(b), one side of the outer peripheral surface of the locking ring 5 forms a third outer mounting surface, and the other side end surface is provided with a first through hole 5b arranged in the circumferential direction, and the outer peripheral surface is provided with a radial cut 5c. The locking ring 5 is arranged on the left side of the wheel shaft 3 and extends in a ring shape along the circumferential direction of the wheel shaft 3. The cross section of the locking ring 5 is L-shaped. The right side of the outer peripheral surface of the locking ring 5 is provided with a third outer taper surface 5a. The left side end surface is provided with a first through hole 5b arranged in the circumferential direction. The locking ring 5 has a radial cut 5c. The taper angle of the third outer taper surface 5a faces the right side. The locking ring 5 is axially fitted on the wheel shaft 3 until the right side third outer taper surface 5a contacts the second inner taper surface 4b of the adapter seat 4. The first stud 14 is installed on the first through hole. The locking ring 5 is connected with the wheel shaft threaded hole 3b on the wheel shaft 3 by means of the first stud 14 and the first nut 15, so that the locking ring 5 is fixedly connected with the driving wheel in an integrated manner. The axial compression force of the locking ring 5 by the first nut 15 completely compresses the adapter seat 4 on the wheel shaft 3, thereby achieving fixed connection of the adapter seat 4 and the wheel shaft 3.

[0041] As shown in Figure 4 , the rim 7 protrudes from the outer peripheral surface of the adapter seat 4 and extends in a ring shape along the circumferential direction of the adapter seat 4. The inner side of the inner cavity flange of the rim body 71 of the rim 7 is an installation inner taper surface 71a extending in the circumferential direction. The right side rim 7 is axially fitted on the adapter seat 4 until the third inner taper surface 71a contacts the second outer taper surface 4c of the adapter seat. The spacer 9 and the left side rim 7 pass through the adapter seat 4 in the same manner in the axial direction. The left and right rims 7 are oppositely arranged, and the spacer 9 is arranged between the left side rim 7 and the right side rim 7.

[0042] As shown in Figure 3As shown, the inner cavity of the rim body 71 of the rim 7 is connected to a bend joint 10. The bend joints 10 of the two rims are respectively connected to the first valve stem 11 and the second valve stem 12. The first valve stem 11 of the right rim passes through the axial groove 4e on the outer circumferential surface of the adapter 4 and communicates with the left side.

[0043] like Figure 4 As shown in 7(a) and 7(b), the locking block 6 is disposed on the left side of the adapter 4 and is evenly distributed along the circumference of the adapter 4. In this embodiment, a total of 12 locking blocks are provided. The locking block is a block-shaped block that extends at a certain angle along the central axis X. A fourth outer conical surface 6a is provided on the right side of its vertical surface, and at least two second through holes 6b are provided on the end face of its left side. The cone angle of the fourth outer conical surface 6a faces to the right. The locking block 6 is inserted into the adapter 4 axially until its fourth outer conical surface 6a contacts the mounting inner conical surface 71a of the left wheel rim 7. Moreover, the left side of the locking block 6 is integrally fixedly connected to the adapter 4 by means of the second stud 16 and the second nut 17. The axial pressing force of the second nut 17 on the locking block 6 is used to completely press the left wheel rim 7, the spacer 9, and the right wheel rim 7 onto the adapter 4, thereby realizing the fixed connection between the left wheel rim, the spacer 9, the right wheel rim and the adapter 4.

[0044] The cone angles of the first inner cone surface 4a, the first outer cone surface 3a, the third outer cone surface 5a, the second inner cone surface 4b, the second outer cone surface 4c, the mounting inner cone surface 71a, and the fourth outer cone surface 6a are equal.

[0045] Tire 8 is mounted on rim 7. Since tires are not involved in the implementation scheme, tires are not shown in the attached drawings.

[0046] Example 3 Based on the rear axle hub mounting structure of the mining dump truck wheel rim in Embodiment 2, this embodiment provides a rear axle hub mounting method, including the following steps: 1. Connect the wheel axle 3 to the rear axle 2 using bolts 13, and then fit the wheel rim 7 onto the wheel axle 3; 2. Fit the adapter 4 and locking ring 5 axially onto the axle 3. The third outer conical surface 5a of the locking ring 5 abuts against the second inner conical surface 4b of the adapter 4, making contact fit. The first stud 14 passes through the locking ring through hole 5b and connects to the threaded hole 3b. The first nut 15 is installed on the first stud 14 and locked. Connect the adapter 4 and the axle 3 together. like Figure 2 , 3, 4, the locking ring 5 and the axle 3 are axially compressed by the first stud 14, so that the third outer taper surface 5a and the second inner taper surface 4b are in contact and compressed, the first outer taper surface 3a and the first inner taper surface 4a are completely compressed, and the adapter 4 is fixedly connected with the axle 3; the adapter 4 is axially compressed on the axle 3 (the adapter 4 is connected to the drive wheel), and the adapter 4 is fixedly connected with the drive wheel integrally and has the ability to transmit torque.

[0047] 3, the spacer 9 is sleeved outside the adapter 4, and then another rim 7 is installed on the left side of the spacer 9, the left rim 7 pushes the spacer 9, and the spacer 9 pushes (to the right) the right rim 7, so that the first outer taper surface 3a of the axle 3 is in contact with the third inner taper surface 71a of the right rim 7; 4, the second stud 16 is installed in the threaded hole 4d of the adapter, the locking block 6 is installed on the left side of the adapter 4, the fourth outer taper surface 6a of the locking block 6 and the third inner taper surface 71a of the left rim 7 are in contact, the second stud 16 is sleeved on the locking block through hole 6b, and the second nut 17 is installed on the second stud 16 to lock, so that the left rim 7 is fixed on the adapter 4.

[0048] Through the axial compression force of the second stud 16 and the second nut 17 on the locking block 6, the fourth outer installation surface taper 6a and the third inner taper surface 71a of the left rim 7 are in contact and compressed, the third inner taper surface 71a of the right rim 7 and the second outer taper surface 4c are completely compressed, and then the left rim 7, the spacer 9 and the second rim are compressed on the adapter 4, and then the left rim 7 is fixedly connected with the adapter 4, and has the ability to transmit torque.

[0049] When the drive wheel 3 rotates, the adapter 4 rotates integrally, the left rim 7 and the right rim 7 rotate integrally under the drive of the adapter 4, and the tire 8 rotates integrally under the drive of the adapter 4.

[0050] When the rim 7 needs to be disassembled, only the locking block 6 needs to be disassembled, and then the rim 7 and the spacer 9 can be disassembled one by one; when the rim is reinstalled, only the rim 7, the spacer 9 and the locking block 6 need to be installed one by one.

[0051] Thus, the technical scheme of the present application has been described in combination with the preferred embodiments shown in the drawings, but those skilled in the art can easily understand that the protection scope of the present application is obviously not limited to these specific embodiments. Those skilled in the art can make equivalent changes or replacements to the related technical features without departing from the principles of the present application, and the technical scheme after the changes or replacements will fall within the protection scope of the present application.

[0052] The terms used in the present application are illustrative and exemplary, rather than limiting terms. Since the present application can be implemented in various forms without departing from the spirit or essential characteristic thereof, it should also be understood that the above-described embodiments are not limited by any of the foregoing disclosure, but are widely interpreted, falling within the spirit and scope of the appended claims, whereby all changes and modifications thereto belong to the scope of the following claims.

Claims

1. A rear axle hub mounting structure, characterized in that, include: The adapter includes an adapter base, a locking ring, and a locking block. The adapter base forms an axial cavity structure, with a first inner mounting surface and a second inner mounting surface forming circumferentially on both sides of the cavity structure. A second outer mounting surface forms circumferentially on one side of the outer circumferential surface of the adapter base, and threaded holes evenly distributed circumferentially are provided on the left end face. The locking ring is an annular structure with radial slits on its outer circumferential surface and multiple locking ring through holes on its end face. A third outer mounting surface is provided on the outer side of the locking ring, and a first stud is installed in the locking ring through hole. The second inner mounting surface and the third outer mounting surface are in contact with each other. The locking block has a vertical surface and an end face. The end face has a locking block through hole, and the vertical surface has a fourth outer mounting surface. A second stud passes through the locking block through hole and connects to the threaded hole of the adapter base.

2. The rear axle hub mounting structure as described in claim 1, characterized in that, It also includes a spacer ring, which is a cylindrical structure and is fitted onto the outside of the adapter.

3. The rear axle hub mounting structure as described in claim 1, characterized in that, The adapter has a groove along the axial direction on its outer circumferential surface.

4. The rear axle hub mounting structure as described in claim 1, characterized in that, The first inner mounting surface, the second inner mounting surface, the second outer mounting surface, the third outer mounting surface, and the fourth outer mounting surface are all conical surfaces with equal cone angles.

5. A mining dump truck using the rear axle hub mounting structure of claim 1, comprising: A wheel rim and a drive wheel axle, characterized in that the wheel rim includes a wheel rim body, an inner cavity on one side of the wheel rim body forming a flange structure, and a third inner mounting surface extending circumferentially is provided on the inner side of the flange structure; a first outer mounting surface is provided circumferentially on the outer circumferential surface of the axle, the cone angle of the first outer mounting surface is oriented in the same direction as the first inner mounting surface, and a plurality of wheel axle threaded holes are provided on the end face of the wheel axle evenly distributed circumferentially; the inner cavity structure of the adapter is fitted onto the wheel axle, a first stud is connected to the wheel axle threaded hole, the first inner mounting surface and the first outer mounting surface are in contact and fit, and a second outer mounting surface; the adapter is connected between two wheel rim bodies, and a fourth outer mounting surface and the third inner mounting surface are in contact and fit.

6. The mining dump truck as described in claim 5, characterized in that, A spacer ring is installed between the two wheel rims.

7. The mining dump truck as described in claim 5, characterized in that, The inner cavity of the wheel rim is connected to a elbow joint, and the outer circumferential surface of the adapter seat is provided with a groove along the axial direction. The elbow joints of the two wheel hubs are respectively connected to the first valve stem and the second valve stem, and the first valve stem passes through the groove of the adapter seat.

8. The rear axle hub installation method for a mining dump truck as described in claim 5, characterized in that, include: Bolts are used to connect the wheel axle to the rear axle, and wheel rims are fitted onto the wheel axle; the adapter and locking ring are axially fitted onto the wheel axle, with the third outer conical surface of the locking ring and the second inner conical surface of the adapter contacting each other; the first stud passes through the locking ring through hole and connects to the threaded hole; and the first nut is installed on the first stud to lock it in place. The spacer is fitted on the outside of the adapter. Another wheel rim is installed on the left side of the spacer. The left wheel rim pushes the spacer, and the spacer pushes the right wheel rim, so that the first outer conical surface of the wheel axle contacts and engages with the third inner conical surface of the right wheel rim. The second stud is installed in the threaded hole of the adapter. The locking block is installed on the left side of the adapter. The fourth outer conical surface of the locking block and the third inner conical surface of the left wheel rim are in contact and fit together. The second stud is fitted on the through hole of the locking block. The second nut is installed on the second stud and locked to fix the left wheel rim on the adapter.

9. The rear axle hub mounting method as described in claim 8, characterized in that, The locking ring is axially pressed against the wheel axle by the first stud, so that the third outer conical surface and the second inner conical surface come into contact with each other and are pressed together. The first outer conical surface and the first inner conical surface are pressed together, thereby fixing the adapter seat to the wheel axle. The adapter seat is pressed onto the wheel axle axially. Through the axial pressing force of the second stud and the second nut on the locking block, the fourth outer mounting surface conical surface comes into contact with and is pressed against the third inner conical surface of the left wheel rim. The third inner conical surface and the second outer conical surface of the right wheel rim are completely pressed together, thereby pressing the left wheel rim, the spacer, and the second wheel rim onto the adapter seat, thus achieving a fixed connection between the left wheel rim and the adapter seat.

10. The rear axle hub mounting method as described in claim 8, characterized in that, When the rim needs to be removed, remove the locking block and then remove the rim and spacer ring one by one; when reinstalling the rim, simply install the rim, spacer ring and locking block one by one.

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