Mine dump truck wheel rim base and wheel rim
By adopting a design for the rim base of mining dump truck wheels with ring forgings and no intersecting welds, the reliability problem caused by intersecting welds in the existing technology has been solved, achieving higher strength and safety.
Patent Information
- Application Number
- CN202521747212.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-15
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-08-15
AI Technical Summary
The existing mining dump truck wheel rim base has multiple intersecting welds and the anisotropy of the steel plate material, resulting in large welding heat-affected zone and internal stress, which easily leads to delamination and interlayer tearing, affecting reliability and stability.
The mounting ring, connecting cylinder and supporting ring are made of ring forgings, which are welded to form a rim base without intersecting welds. They are connected by V-shaped weld bevels and subjected to flaw detection and stress relief treatment to improve the uniformity and strength of the materials.
It improves the reliability and strength of the rim base, reduces welding defects, and enhances the safety and reliability of the rim.
Smart Images
Figure CN224675798U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of mining dump trucks, specifically, it relates to a rim base and rim of a mining dump truck wheel. Background Technology
[0002] Mining dump trucks are large pieces of equipment used in open-pit mines for transporting materials and minerals. They are heavy and have a large load capacity, typically equipped with giant engineering tires. Correspondingly, the rims on which these tires are mounted bear significant alternating loads during operation. Among the various components of the rim, the inner side of the rim body connects to the hub, while the outer side supports the tires; it is the component that bears the heaviest load. Therefore, the reliability of the rim body has a crucial impact on the safe and reliable operation of mining dump trucks.
[0003] The technical state of the rim base of a mining dump truck wheel rim in the prior art is described below. In the prior art, the mounting ring, connecting cylinder and supporting ring of the rim base of a mining dump truck wheel rim are made by rolling steel plates into a cylindrical shape and then welding them together. Then, the above three components are assembled and welded together in sequence to obtain the rim base.
[0004] like Figure 1 The image shown is an isometric view of the connecting cylinder in the prior art.
[0005] Taking the connecting cylinder 412 as an example, the state of the connecting cylinder 412 after rolling in the prior art is shown. The connecting cylinder 412 not only has a left bevel 412a and a right bevel 412b on the left and right sides, but also has an axial bevel 412c in its axial position. Moreover, the welding bevels (left bevel 412a, right bevel 412b, and axial bevel 412c) intersect.
[0006] Correspondingly, the mounting ring and the support ring have similar shapes.
[0007] Wheel rims are typically manufactured by welding several parts together, depending on their cross-section. Each part is made by rolling steel plates into cylinders and welding them together. This process results in multiple intersecting axial welds and circumferential welds. The welding of these intersecting welds, along with the anisotropy of the steel plates themselves, generates significant heat-affected zones and internal stresses on the rim. Furthermore, the steel plates used are prone to delamination, which greatly deteriorates the tensile properties of the steel along its thickness and may lead to interlayer tearing during weld shrinkage. The steel plates usually possess residual stress, which negatively impacts the deformation, stability, and fatigue resistance of the wheel rim under external forces, significantly affecting its reliability. Utility Model Content
[0008] The purpose of this utility model is to provide a rim base and rim for mining dump trucks. The resulting rim base has fewer weld beads and no intersecting weld beads, which effectively improves the reliability of the rim base.
[0009] To achieve the above objectives, the technical solution used in this utility model is as follows:
[0010] The rim base includes: a mounting ring, a connecting cylinder, and a supporting ring. The mounting ring is an annular shape extending circumferentially, with a mounting bevel on the right side. A first groove and a second groove are provided on the outer circumferential surface. The first groove is located to the right of the second groove. The first groove is used to install a sealing ring, and the second groove is used to install a locking ring. The connecting cylinder is a cylindrical shape extending circumferentially, with a left cylinder bevel and a right cylinder bevel on the left and right sides, respectively. The left cylinder bevel and the mounting bevel are positioned opposite each other and welded together. The supporting ring is an annular shape extending circumferentially, with a supporting bevel on the left side. The supporting bevel and the right cylinder bevel are positioned opposite each other and welded together.
[0011] Furthermore, the mounting ring, connecting cylinder, and support ring are all ring forgings.
[0012] Furthermore, the outer circumference of the support ring forms a first outer conical surface upwards, and a first shoulder is formed on the outer side of the first outer conical surface. The first outer conical surface is a conical surface with an increasing diameter in the direction to the right of the axis.
[0013] Furthermore, the installation bevel, left cylinder bevel, right cylinder bevel, and support bevel are all V-shaped welding bevels.
[0014] The rim includes: a rim base, a seat ring, a first retaining ring, a second retaining ring, and a locking ring. The seat ring is fitted on the outside of the mounting seat ring and the connecting cylinder. The first retaining ring and the second retaining ring are respectively fitted on the right side of the supporting seat ring and on the seat ring. The protruding edge of the lower part of the locking ring is installed in the second groove, and the top of the locking ring is located at the lower part of the seat ring.
[0015] Preferably, a first inner conical surface is formed along the circumferential direction inside the first retaining ring, and the first inner conical surface is a conical surface with an increasing diameter to the right; the first inner conical surface is fitted with the first outer conical surface, and a gap is formed between the first retaining ring and the first shoulder; a second outer conical surface is formed upward on the left outer circumferential surface of the seat ring, and a second shoulder is provided on the left side of the second outer conical surface; a second inner conical surface is formed along the circumferential direction inside the second retaining ring, and the second inner conical surface is fitted with the second outer conical surface, and a gap is formed between the second retaining ring and the second shoulder.
[0016] Preferably, the first shoulder is radially higher than the first outer conical surface, and the taper of the first outer conical surface is equal to that of the first inner conical surface; the second shoulder is radially higher than the second outer conical surface, and the taper of the second outer conical surface is equal to that of the second inner conical surface.
[0017] Preferably, the rim base, seat ring, first retaining ring, second retaining ring, and lock ring are located on the same axis.
[0018] The technical effects of this utility model include:
[0019] The rim base of the above scheme is manufactured using ring forging, with fewer welds and no intersecting welds. After welding, flaw detection and stress relief treatment are carried out, which effectively improves the reliability of the rim base and the rim. The rim base has higher strength and reliability, and correspondingly, the rim has better safety and reliability. Attached Figure Description
[0020] Figure 1 This is an isometric view of the connecting cylinder in the prior art;
[0021] Figure 2 This is an exploded view of the wheel rim in this utility model;
[0022] Figure 3 This is a cross-sectional view of the rim base of the wheel rim in this utility model;
[0023] Figure 4 This is a sectional view of the wheel rim after the tire is installed in this utility model;
[0024] Figure 5 This is a flowchart of the manufacturing method of the rim base in this utility model.
[0025] 1-Rim;
[0026] 11-Rim base;
[0027] 111-Installation seat ring, 111a-Installation bevel, 111b-First groove, 111c-Second groove;
[0028] 112 - Connecting cylinder, 112a - Left cylinder bevel, 112b - Right cylinder bevel;
[0029] 113-Support seat ring, 113a-Support bevel, 113b-First outer conical surface, 113c-First shoulder;
[0030] 12-seat ring;
[0031] 13 - First stop ring;
[0032] 14 - Second stop ring;
[0033] 15-locking ring;
[0034] 2-Tires;
[0035] 3-Sealing ring;
[0036] 412 - Connecting cylinder in the prior art; 412a - Left bevel; 412b - Right bevel; 412c - Axial bevel; O - Central axis; S1 - Enclosed space; O - Central axis. Detailed Implementation
[0037] The following description fully illustrates specific embodiments of the present invention to enable those skilled in the art to practice and reproduce it. In the following description, the direction along the central axis O is referred to as the "axial direction", the tangent direction at any point rotating about the central axis O is referred to as the "circumferential direction" or "circumferential direction", and the direction intersecting the central axis O and perpendicular to the central axis O is referred to as the "radial direction".
[0038] The following is with reference to the appendix. Figure 2-5 The present invention describes the specific implementation scheme of the mining dump truck wheel rim base and the rim involved in this utility model.
[0039] like Figure 2 The image shown is an exploded view of the rim 1 in this utility model; as shown... Figure 3 The image shown is a cross-sectional view of the rim base 11 of the rim in this utility model; as shown... Figure 4 The figure shown is a cross-sectional view of the rim 1 after the tire 2 is installed in this utility model.
[0040] The wheel rim 1 of the mining dump truck includes: wheel rim base 11, seat ring 12, first retaining ring 13, second retaining ring 14 and lock ring 15. The wheel rim base 11, seat ring 12, first retaining ring 13, second retaining ring 14 and lock ring 15 are located on the same axis O.
[0041] The rim base 11 includes: a mounting ring 111, a connecting cylinder 112, and a supporting ring 113. The mounting ring 111 and the supporting ring 113 are respectively welded to the left and right sides of the connecting cylinder 112.
[0042] Mounting ring 111, connecting cylinder 112, and support ring 113 are all annular forgings.
[0043] The mounting ring 111 is an annular shape extending circumferentially. It has a mounting bevel 111a on its right side and a first groove 111b and a second groove 111c on its outer circumferential surface. The first groove 111b is located to the right of the second groove 111c. The first groove 111b is used to install the sealing ring 3, and the second groove 111c is used to install the locking ring 15.
[0044] The connecting cylinder 112 is a cylindrical shape extending circumferentially, with a left cylinder bevel 112a and a right cylinder bevel 112b on its left and right sides, respectively. The left cylinder bevel 112a and the mounting bevel 111a are positioned opposite each other and welded together.
[0045] The support ring 113 is an annular shape extending circumferentially, with a support bevel 113a on its left side. The support bevel 113a and the right cylinder bevel 112b are positioned opposite each other and welded together. The outer circumferential surface of the support ring 113 forms a first outer conical surface 113b circumferentially upward, and a first shoulder 113c is formed on the outer side of the first outer conical surface 113b. The first outer conical surface 113b is a conical surface with an increasing diameter in the direction to the right of axis O.
[0046] The mounting ring 111 and the support ring 113 contact the connecting cylinder 112 from the left and right sides along the axial direction, respectively, forming a double V-shaped welding bevel at their connection points. The mounting bevel 111a, the left cylinder bevel 112a, the right cylinder bevel 112b, and the support bevel 113a are all V-shaped welding bevels. The mounting ring 111, the connecting cylinder 112, and the support ring 113 are integrally and fixedly connected as a whole by welding.
[0047] The first retaining ring 13 is fitted onto the outer right side of the support ring 113. The first retaining ring 13 protrudes from the outer circumferential surface of the rim base 11 and extends in a ring shape along the circumferential direction of the support ring 113. A first inner conical surface 131 is formed within the first retaining ring 13 along the circumferential direction. The first inner conical surface 131 is a conical surface whose diameter increases as it moves toward the right side of the central axis X. The first inner conical surface 131 is fitted with the first outer conical surface 113b, and a gap is formed between the first retaining ring 13 and the first shoulder 113c. The first inner conical surface 131, through its fit with the first outer conical surface 113b, limits the first retaining ring 13 in the axial outward direction of the rim base 11. The first outer conical surface 113b is a conical surface whose diameter increases outward along the axial direction O of the first retaining ring 13. The first shoulder 113c is radially higher than the first outer conical surface 113b. The first outer conical surface 113b and the first inner conical surface 131 have the same taper. After the tire is installed, the first outer conical surface 113b contacts the first inner conical surface 131. The first retaining ring 13 is limited to the right along the central axis O by means of the first outer conical surface 113b. The first retaining ring 13 and the first shoulder 113c do not contact each other. This allows the axial force borne by the first retaining ring 13 to ultimately act on the first outer conical surface 113b, rather than being concentrated at the first shoulder 13. When the tire is running, the impact force is dispersed by the first inner conical surface 131 and the first outer conical surface 113b, preventing fatigue damage at the root of the first shoulder 113c and thus preventing the failure of the rim 1.
[0048] The seat ring 12 is fitted onto the outer side of the mounting seat ring 111 and the connecting cylinder 112. The seat ring 12 protrudes from the outer circumferential surface of the mounting seat ring 111 and extends in a ring shape along the circumferential direction of the mounting seat ring 111. A second outer conical surface is formed on the left outer circumferential surface of the seat ring 12, and a second shoulder is provided on the left side of the second outer conical surface.
[0049] The second retaining ring 14 is fitted onto the outside of the seat ring 12, protruding from the outer circumferential surface of the seat ring 12 and extending in a ring shape along the circumferential direction of the seat ring 12. A second inner conical surface is formed within the second retaining ring 14 along the circumferential direction, and this inner conical surface mates with the second outer conical surface. A gap is formed between the second retaining ring 14 and the second shoulder of the seat ring 12. The second retaining ring 14 is limited in its position along the axial direction of the seat ring 12 towards the second shoulder by mates with the second outer conical surface on the seat ring. The second outer conical surface is a conical surface that increases in diameter to the left along the axial direction of the seat ring, and the second shoulder is higher than the second outer conical surface in the radial direction of the seat ring.
[0050] After installation, the seat ring 12 protrudes from the outer peripheral surface of the mounting seat ring 111 and extends in a ring shape along the circumferential direction of the mounting seat ring 111. Its outer peripheral surface has a second outer conical surface extending in the circumferential direction on its left side, and a second shoulder extending in the circumferential direction on the left side of the second outer conical surface. The second shoulder is higher than the second outer conical surface. The second outer conical surface is a conical surface whose diameter increases as it moves towards the left side of the central axis O. The second retaining ring 14 protrudes from the outer peripheral surface of the seat ring 12 and extends in a ring shape along the circumferential direction of the seat ring 12. Its inner ring forms a second inner conical surface extending in the circumferential direction. The second inner conical surface 141 has a diameter that increases as it moves towards the left side of the central axis O. The second outer cone surface has the same taper as the second inner cone surface. After the tire 2 is installed, the second outer cone surface contacts the second inner cone surface. The second retaining ring 14 is limited to the left along the central axis O by means of the second outer cone surface on the seat ring 12. The second retaining ring 14 and the second shoulder of the seat ring 12 do not contact each other. This allows the axial force borne by the second retaining ring 14 to be finally applied to the second outer cone surface of the seat ring 12, rather than concentrated at the second shoulder. When the tire 2 is running, the impact force is dispersed by the second inner cone surface and the second outer cone surface, which will not cause fatigue damage at the root of the second shoulder, thus causing the rim to fail.
[0051] The locking ring 15 is installed in the second groove 111c, with its top located below the seat ring 12. The locking ring 15 protrudes from the outer circumferential surface of the rim base 11 and extends annularly along the circumferential direction of the rim base 11, contacting the seat ring 12. It is axially positioned by means of the second groove 111c on the rim base 11, correspondingly positioning the seat ring 12 to the left along the central axis. The locking ring 15 is circumferentially installed on the opposite side of the first outer conical surface 113b. The lower convex edge of the locking ring 15 is installed in the second groove 111c of the rim base 11, and the sealing ring 3 is installed in the first groove 111b. The locking ring 15 forms a limiting force on the seat ring 12 axially within the rim base 11. The locking ring 15 is a ring-shaped structure made of elastic material and has an opening for easy installation.
[0052] like Figure 5 The diagram shown is a flowchart of the manufacturing method of the rim base 11 in this utility model.
[0053] The manufacturing method of the rim base 11 is as follows:
[0054] Step 1: Roughly machine the ring forgings of mounting ring 111, connecting cylinder 112 and supporting ring 113. A mounting bevel 111a is machined on one side of the ring forging of mounting ring. A left cylinder bevel 112a and a right cylinder bevel 112b are machined on both sides of the ring forging of connecting cylinder. A supporting bevel 113a is machined on one side of the ring forging of supporting ring.
[0055] Rough machining is performed on the mounting ring forging, the connecting cylinder ring forging, and the support ring forging to produce the basic outline and welding bevel.
[0056] Step 2: Assemble and weld the rough-machined mounting ring 111, connecting cylinder 112 and supporting ring 113 ring forgings into a blank of the rim base 11. The mounting ring 111 and supporting ring 113 ring forgings are located on both sides of the ring forging of the connecting cylinder 112.
[0057] After the ring forgings 111, 112, 113 and 113 are assembled, a double V-shaped bevel is formed at the contact position. Welding is performed on one side of the double V-shaped bevel. After welding one side is completed, the opposite side is cleaned and then welded.
[0058] Step 3: Use ultrasonic and X-ray to inspect the welds of the blank part of the rim base 11 to ensure that the welds are free of defects;
[0059] Step 4: Stress relief treatment, the blank of the rim base 11 is subjected to overall tempering treatment to eliminate welding stress;
[0060] Step 5: Perform precision machining on the blank of the rim base 11 to the final dimensions.
[0061] Tire 2 is installed between the first retaining ring 13 and the second retaining ring 14. The inner rings on both sides of tire 2 are supported on seat ring 12 and support seat ring 113 respectively. Sealing ring 3 is installed in the second groove. Seat ring 12, connecting cylinder 112, support seat ring 113 and tire 2 form a closed space S1 inside tire 2. When the mining dump truck is running, tire 2 is subjected to alternating radial and axial loads. Ultimately, the loads are all applied to the rim base 11.
[0062] In summary, the mounting ring 111, connecting cylinder 112, and support ring 113 of the rim base of this utility model are all ring forgings. Compared with steel plate rolled rim bases, forgings have more uniform grain size, less segregation, and higher strength and anisotropy. Moreover, the ring forging is a complete ring without axial connecting welds. Consequently, when the above components are welded together, there are only circumferential annular welds without weld intersections, resulting in good structural strength and rigidity.
[0063] The terminology used in this invention is descriptive and exemplary, and not restrictive. Since this invention can be embodied in various forms without departing from the spirit or essence of the technical solution, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.
Claims
1. A rim base, characterized in that, include: The mounting ring comprises a mounting seat ring, a connecting cylinder, and a supporting seat ring. The mounting seat ring is an annular shape extending circumferentially, with an installation bevel on the right side. A first groove and a second groove are provided on its outer circumferential surface, with the first groove located to the right of the second groove. The first groove is used to install a sealing ring, and the second groove is used to install a locking ring. The connecting cylinder is an annular shape extending circumferentially, with a left cylinder bevel and a right cylinder bevel on its left and right sides, respectively. The left cylinder bevel and the mounting bevel are positioned opposite each other and welded together. The supporting seat ring is an annular shape extending circumferentially, with a supporting bevel on its left side. The supporting bevel and the right cylinder bevel are positioned opposite each other and welded together.
2. The rim base as described in claim 1, characterized in that, The mounting ring, connecting cylinder, and support ring are all ring forgings.
3. The rim base as described in claim 1, characterized in that, The outer circumference of the support ring forms a first outer conical surface, and the outer side of the first outer conical surface forms a first shoulder. The first outer conical surface is a conical surface with an increasing diameter in the direction to the right of the axis.
4. The rim base as described in claim 1, characterized in that, The installation bevel, left cylinder bevel, right cylinder bevel, and support bevel are all V-shaped welding bevels.
5. A rim using the rim base according to any one of claims 1-4, characterized in that, Also includes: The set includes a seat ring, a first retaining ring, a second retaining ring, and a locking ring. The seat ring is fitted onto the outside of the mounting ring and connecting cylinder. The first and second retaining rings are fitted onto the right side of the supporting seat ring and the seat ring, respectively. The lower convex edge of the locking ring is installed in the second groove, and the top of the locking ring is located at the lower part of the seat ring.
6. The wheel rim as described in claim 5, characterized in that, The first retaining ring has a first inner conical surface formed along the circumferential direction. The first inner conical surface is a conical surface that increases in diameter to the right. The first inner conical surface and the first outer conical surface are fitted together, and a gap is formed between the first retaining ring and the first shoulder. The left outer circumferential surface of the seat ring forms a second outer conical surface, and a second shoulder is provided on the left side of the second outer conical surface. The second retaining ring has a second inner conical surface formed along the circumferential direction. The second inner conical surface and the second outer conical surface are fitted together, and a gap is formed between the second retaining ring and the second shoulder.
7. The wheel rim as described in claim 6, characterized in that, The first shoulder is radially higher than the first outer conical surface, and the taper of the first outer conical surface is equal to that of the first inner conical surface; the second shoulder is radially higher than the second outer conical surface, and the taper of the second outer conical surface is equal to that of the second inner conical surface.
8. The wheel rim as described in claim 5, characterized in that, The rim base, seat ring, first retaining ring, second retaining ring, and lock ring are located on the same axis.