Rim base body of mining dump truck, rim and manufacturing method of rim base body

Abstract

The rim base body comprises a mounting seat ring, a connecting cylinder and a supporting seat ring, the mounting seat ring is in a ring shape extending in the circumferential direction, a mounting groove is formed in the right side of the mounting seat ring, a first groove and a second groove are formed in the peripheral face of the mounting seat ring, the first groove is located in the right side of the second groove, the first groove is used for mounting a sealing ring, and the second groove is used for mounting a locking ring; the connecting cylinder is in a cylinder shape extending in the circumferential direction, a left cylinder groove and a right cylinder groove are formed in the left side and the right side of the connecting cylinder respectively, and the left cylinder groove and the mounting groove are opposite in position and connected in a welded mode. The supporting seat ring is in a ring shape extending in the circumferential direction, a supporting groove is formed in the left side of the supporting seat ring, and the supporting groove and the right cylinder groove are opposite in position and connected in a welded mode. The invention further discloses a rim and a manufacturing method of the rim base body. The rim base body obtained through the method is few in weld beads and free of crossed weld beads, and the reliability of the rim base body is effectively improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of mine dump truck, in particular, relates to a mine dump truck rim base, a rim and a manufacturing method of the rim base. BACKGROUND

[0002] The mine dump truck is a large equipment used for transporting materials and minerals in open-pit mine, which has large self-weight and load, and is usually configured with giant engineering tires. Correspondingly, the rim for installing the tire bears a large alternating load during operation. Among the components of the rim, the rim base, which is connected with the hub on the inner side and used for supporting the tire on the outer side, is the largest load-bearing component. Therefore, the reliability of the rim base has a crucial influence on the safe and reliable operation of the mine dump truck.

[0003] The technical state of the rim base of the mine dump truck rim in the prior art will be described below. In the prior art, the mounting collar, the connecting cylinder and the supporting collar of the rim base of the mine dump truck rim are made into a cylindrical shape by rolling a steel plate and then welding butt joints, and then the above three components are assembled and welded in sequence to obtain the rim base.

[0004] As shown in FIG. 1, it is an axial view of the mounting collar in the prior art. Figure 1

[0005] Taking the connecting cylinder 412 as an example, the state of the connecting cylinder 412 after rolling is shown. The connecting cylinder 412 is not only provided with a left side bevel 412a and a right side bevel 412b on the left and right sides, but also provided with an axial bevel 412c at the axial position, and the welding bevels (the left side bevel 412a, the right side bevel 412b and the axial bevel 412c) intersect.

[0006] Correspondingly, the mounting collar and the supporting collar have similar shapes.

[0007] The rim base is usually manufactured by splicing and welding several parts according to different cross sections, and each part is made into a cylinder by rolling a steel plate and welded butt joint. The rim base manufactured in this way has multiple axial welds and circumferential girth welds intersecting with each other. The welding of the intersecting welds and the mechanical anisotropy of the steel plate itself have a great heat effect and internal stress on the rim, and the steel plate material is prone to have a sandwich phenomenon inside, which greatly deteriorates the tensile properties of the steel along the thickness direction, and may cause interlayer tearing when the weld shrinks. The steel plate usually has certain residual stress, which has adverse effects on the deformation, stability and fatigue resistance of the rim base under external force, and has a great influence on the reliability of the rim base. SUMMARY

[0008] ​The application aims to provide a mining dump truck wheel rim base, a wheel rim and a manufacturing method of the wheel rim base, so as to effectively improve the reliability of the wheel rim base.

[0009] To achieve the above-mentioned purpose, the technical solution used by the application is:

[0010] The wheel rim base comprises a mounting seat ring, a connecting cylinder body and a supporting seat ring, the mounting seat ring is annular and extends in the circumferential direction, a mounting bevel is arranged on the right side, a first groove and a second groove are arranged on the outer circumferential surface, the first groove is located on the right side of the second groove, the first groove is used for mounting a mounting sealing ring, and the second groove is used for mounting a lock ring; the connecting cylinder body is cylindrical and extends in the circumferential direction, a left cylinder body bevel and a right cylinder body bevel are arranged on the left side and the right side respectively, and the left cylinder body bevel and the mounting bevel are oppositely arranged and connected by welding; and the supporting seat ring is annular and extends in the circumferential direction, a supporting bevel is arranged on the left side, and the supporting bevel and the right cylinder body bevel are oppositely arranged and connected by welding.

[0011] Further, the mounting seat ring, the connecting cylinder body and the supporting seat ring are all annular forgings.

[0012] Further, a first outer taper surface is formed on the outer circumferential surface of the supporting seat ring in the circumferential direction, a first stop shoulder is formed on the outer side of the first outer taper surface, and the first outer taper surface is a taper surface with a diameter increasing in the right side direction of the axis.

[0013] Further, the mounting bevel, the left cylinder body bevel, the right cylinder body bevel and the supporting bevel are all V-shaped welding bevels.

[0014] The wheel rim comprises a wheel rim base, a seat ring, a first stop ring, a second stop ring and a lock ring, the seat ring is sleeved on the outer side of the mounting seat ring and the connecting cylinder body, the first stop ring and the second stop ring are respectively sleeved on the right side of the supporting seat ring and the seat ring, the convex edge of the lower part of the lock ring is mounted in the second groove, and the top of the lock ring is located below the seat ring.

[0015] Preferably, a first inner taper surface is formed on the inner circumferential surface of the first stop ring in the circumferential direction, the first inner taper surface is a taper surface with a diameter increasing in the right side direction, the first inner taper surface is matched and assembled with the first outer taper surface, a gap is formed between the first stop ring and the first stop shoulder, an upward second outer taper surface is formed on the outer circumferential surface of the left side of the seat ring, a second stop shoulder is arranged on the left side of the second outer taper surface, a second inner taper surface is formed on the inner circumferential surface of the second stop ring in the circumferential direction, the second inner taper surface is matched and assembled with the second outer taper surface, and a gap is formed between the second stop ring and the second stop shoulder.

[0016] Preferably, the first stop shoulder is higher than the first outer taper surface in the radial direction, the taper degree of the first outer taper surface is equal to that of the first inner taper surface, the second stop shoulder is higher than the second outer taper surface in the radial direction of the seat ring, and the taper degree of the second outer taper surface is equal to that of the second inner taper surface.

[0017] Preferably, the wheel rim base, the seat ring, the first stop ring, the second stop ring and the lock ring are located on the same axis.

[0018] The manufacturing method of the rim base comprises the following steps:

[0019] The ring forgings of the mounting seat ring, the connecting cylinder body and the supporting seat ring are roughly processed, the mounting seat ring is processed with a mounting bevel on one side, the connecting cylinder body is processed with a left cylinder body bevel and a right cylinder body bevel on two sides respectively, and the supporting seat ring is processed with a supporting bevel on one side;

[0020] The ring forgings of the mounting seat ring, the connecting cylinder body and the supporting seat ring are roughly processed, the mounting seat ring is processed with a mounting bevel on one side, the connecting cylinder body is processed with a left cylinder body bevel and a right cylinder body bevel on two sides respectively, and the supporting seat ring is processed with a supporting bevel on one side;

[0021] The ring forgings of the mounting seat ring, the connecting cylinder body and the supporting seat ring are roughly processed, the mounting seat ring is processed with a mounting bevel on one side, the connecting cylinder body is processed with a left cylinder body bevel and a right cylinder body bevel on two sides respectively, and the supporting seat ring is processed with a supporting bevel on one side;

[0022] Preferably, the ring forgings of the mounting seat ring, the connecting cylinder body and the supporting seat ring are assembled, a double-V-shaped bevel is formed at the contact position, one side of the double-V-shaped bevel is welded, and the opposite side is cleaned and then welded after the welding of one side is completed.

[0023] The technical effects of the present application include:

[0024] According to the above scheme, the rim base is manufactured by using ring forgings, the welding is less and there is no cross welding, and the welding is detected and stress treatment is performed after the welding, so that the reliability of the rim base and the rim is effectively improved, the strength and reliability of the rim base are higher, and accordingly, the safety and reliability of the rim are better. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is an axial view of the connecting cylinder body in the prior art;

[0026] Figure 2 is an exploded view of the rim in the present application;

[0027] Figure 3 is a sectional view of the rim base of the rim in the present application;

[0028] Figure 4 is a sectional view of the rim after the tire is mounted in the present application;

[0029] Figure 5 is a flowchart of the manufacturing method of the rim base in the present application.

[0030] 1 - rim;

[0031] 11 - rim base;

[0032] 111-Installation seat ring, 111a-Installation bevel, 111b-First groove, 111c-Second groove;

[0033] 112 - Connecting cylinder, 112a - Left cylinder bevel, 112b - Right cylinder bevel;

[0034] 113-Support seat ring, 113a-Support bevel, 113b-First outer conical surface, 113c-First shoulder;

[0035] 12-seat ring;

[0036] 13 - First stop ring;

[0037] 14 - Second stop ring;

[0038] 15-locking ring;

[0039] 2-Tires;

[0040] 3-Sealing ring;

[0041] 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

[0042] The following description fully illustrates specific embodiments of the 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".

[0043] The following is with reference to the appendix. Figures 2-5 The specific implementation schemes of the mining dump truck wheel rim base and the rim involved in this invention are described.

[0044] like Figure 2 The image shown is an exploded view of the rim 1 in this invention; as shown... Figure 3 The image shown is a cross-sectional view of the rim base 11 of the rim in this invention; as shown... Figure 4 The figure shown is a cross-sectional view of the rim 1 after the tire 2 is mounted in this invention.

[0045] 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.

[0046] The wheel rim base 11 comprises a mounting seat 111, a connecting cylinder 112 and a supporting seat 113, and the mounting seat 111 and the supporting seat 113 are respectively welded on the left and right sides of the connecting cylinder 112.

[0047] The mounting seat 111, the connecting cylinder 112 and the supporting seat 113 are all annular forgings.

[0048] The mounting seat 111 is annular and extends in the circumferential direction, and a mounting bevel 111a is arranged on the right side of the mounting seat 111, and a first groove 111b and a second groove 111c are arranged on the outer circumferential surface of the mounting seat 111, the first groove 111b is located on the right side of the second groove 111c, the first groove 111b is used for mounting a sealing ring 3, and the second groove 111c is used for mounting a lock ring 15.

[0049] The connecting cylinder 112 is cylindrical and extends in the circumferential direction, and a left cylinder bevel 112a and a right cylinder bevel 112b are respectively arranged on the left side and the right side of the connecting cylinder 112. The left cylinder bevel 112a and the mounting bevel 111a are oppositely arranged and are welded and connected.

[0050] The supporting seat 113 is annular and extends in the circumferential direction, and a supporting bevel 113a is arranged on the left side of the supporting seat 113. The supporting bevel 113a and the right cylinder bevel 112b are oppositely arranged and are welded and connected. An outer conical surface 113b is formed on the outer circumferential surface of the supporting seat 113 in the circumferential direction, and a first shoulder 113c is formed on the outer side of the outer conical surface 113b. The outer conical surface 113b is a conical surface with an increasing diameter in the right direction of the axis O.

[0051] The mounting seat 111 and the supporting seat 113 are respectively in contact with the connecting cylinder 112 from the left and right sides in the axial direction, and a double-V-shaped welding bevel is formed at the connecting position, and the mounting bevel 111a, the left cylinder bevel 112a, the right cylinder bevel 112b and the supporting bevel 113a are V-shaped welding bevels. The mounting seat 111, the connecting cylinder 112 and the supporting seat 113 are integrally fixed and connected as a whole in the form of welding.

[0052] The first retaining ring 13 is sleeved on the right outer side of the supporting seat ring 113, protrudes from the outer circumferential surface of the rim base body 11, and extends annularly along the circumferential direction of the supporting seat ring 113. A first inner tapered surface 131 is formed in the first retaining ring 13 along the circumferential direction, and the first inner tapered surface 131 is a tapered surface with a diameter increasing towards the right side of the central axis X; the first inner tapered surface 131 is matched and assembled with the first outer tapered surface 113b, and a gap is formed between the first retaining ring 13 and the first retaining shoulder 113c; the first inner tapered surface 131 is matched and assembled with the first outer tapered surface 113b, thereby limiting the first retaining ring 13 in the outward axial direction of the rim base body 11; the first outer tapered surface 113b is a tapered surface with a diameter increasing outward along the axis O direction of the first retaining ring 13, and the first retaining shoulder 113c is higher than the first outer tapered surface 113b in the radial direction. The taper of the first outer tapered surface 113b is equal to that of the first inner tapered surface 131, after the tire is installed, the first outer tapered surface 113b is in contact with the first inner tapered surface 131, the first retaining ring 13 is limited to the right along the central axis O by means of the first outer tapered surface 113b, and the first retaining ring 13 and the first retaining shoulder 113c are not in contact, so that the axial force borne by the first retaining ring 13 is finally applied to the first outer tapered surface 113b, and is not concentrated on the first retaining shoulder 13; the impact force formed when the tire is running is dispersed by the first inner tapered surface 131 and the first outer tapered surface 113b, and the root position of the first retaining shoulder 113c is not damaged, thereby avoiding the failure of the rim 1.

[0053] The seat ring 12 is sleeved on the outer side of the mounting seat ring 111 and the connecting cylinder 112, protrudes from the outer circumferential surface of the mounting seat ring 111, and extends annularly along the circumferential direction of the mounting seat ring 111. The left outer circumferential surface of the seat ring 12 is upwardly formed with a second outer tapered surface, and the left side of the second outer tapered surface is provided with a second retaining shoulder.

[0054] The second retaining ring 14 is sleeved on the outer side of the seat ring 12, protrudes from the outer circumferential surface of the seat ring 12, and extends annularly along the circumferential direction of the seat ring 12. A second inner tapered surface is formed in the second retaining ring 14 along the circumferential direction, and the second inner tapered surface is matched and assembled with the second outer tapered surface; a gap is formed between the second retaining ring 14 and the second retaining shoulder of the seat ring 12. The second retaining ring 14 is matched and assembled with the second outer tapered surface on the seat ring, thereby limiting the second retaining ring 14 in the axial direction of the seat ring 12 towards the second retaining shoulder; the second outer tapered surface is a tapered surface with a diameter increasing towards the left along the axial direction of the seat ring, and the second retaining shoulder is higher than the second outer tapered surface in the radial direction of the seat ring.

[0055] After installation, the seat ring 12 protrudes from the outer peripheral surface of the mounting seat ring 111 and extends annularly along the circumferential direction of the mounting seat ring 111, and the left side of the outer peripheral surface has a second outer taper surface extending along the circumferential direction, and the left side of the second outer taper surface has a second stop shoulder extending along the circumferential direction, and the second stop shoulder is higher than the second outer taper surface; the second outer taper surface is a taper surface with an increasing diameter towards the left side of the central axis O; the second retainer ring 14 protrudes from the outer peripheral surface of the seat ring 12 and extends annularly along the circumferential direction of the seat ring 12, and the inner ring of the second retainer ring 14 forms a second inner taper surface extending along the circumferential direction, and the second inner taper surface 141 is a taper surface with an increasing diameter towards the left side of the central axis O; the taper of the second outer taper surface is equal to that of the second inner taper surface, and after the tire 2 is installed, the second outer taper surface contacts the second inner taper surface, and the second retainer ring 14 is limited to move leftward along the central axis O by the second outer taper surface on the seat ring 12, and the second retainer ring 14 and the second stop shoulder of the seat ring 12 do not contact each other, so that the axial force borne by the second retainer ring 14 is finally applied to the second outer taper surface of the seat ring 12, and will not be concentrated on the second stop shoulder; when the tire 2 is running, the impact force formed is dispersed by the second inner taper surface and the second outer taper surface, and will not cause fatigue damage at the root position of the second stop shoulder, thereby causing the failure of the rim.

[0056] The lock ring 15 is installed in the second groove 111c, and the top of the lock ring 15 is located below the seat ring 12. The lock ring 15 protrudes from the outer peripheral surface of the rim base body 11 and extends annularly along the circumferential direction of the rim base body 11, and contacts the seat ring 12, and is axially positioned by the second groove 111c on the rim base body 11, and correspondingly, the seat ring 12 is positioned leftward along the central axis. The lock ring 15 is annularly installed on the opposite side of the first outer taper surface 113b, the convex edge at the lower part of the lock ring 15 is installed in the second groove 111c of the rim base body 11, the sealing ring 3 is installed in the first groove 111b, and the lock ring 15 forms a limit for the seat ring 12 in the axial direction of the rim base body 11, and the lock ring 15 is a ring structure of elastic material and is provided with an opening for easy installation.

[0057] As shown in Figure 5 Fig. 6 is a flow chart of the manufacturing method of the rim base body 11 in the present application.

[0058] The manufacturing method of the rim base body 11 is as follows:

[0059] Step 1: rough machining of the ring forging of the mounting seat ring 111, the connecting cylinder body 112 and the supporting seat ring 113; the side of the ring forging of the mounting seat ring is machined to form a mounting bevel 111a, the two sides of the ring forging of the connecting cylinder body are machined to form a left cylinder body bevel 112a and a right cylinder body bevel 112b, and the side of the ring forging of the supporting seat ring is machined to form a supporting bevel 113a.

[0060] Rough machining of the ring forging of the mounting seat ring, the ring forging of the connecting cylinder body and the ring forging of the supporting seat ring to form the basic outer contour and the welding bevel.

[0061] 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.

[0062] 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.

[0063] 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;

[0064] Step 4: Stress relief treatment, the blank of the rim base 11 is subjected to overall tempering treatment to eliminate welding stress;

[0065] Step 5: Perform precision machining on the blank of the rim base 11 to the final dimensions.

[0066] 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.

[0067] In summary, the mounting ring 111, connecting cylinder 112, and support ring 113 of the rim base of the present invention are all ring forgings. Compared with steel plate rolled rim bases, the forging material has a 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.

[0068] The terminology used in this invention is descriptive and exemplary, not restrictive. Since this invention can be embodied in many 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 of claim 1, wherein The mounting ring, connecting cylinder, and support ring are all ring forgings.

3. The rim base of claim 1, wherein 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 of claim 1 wherein, 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 to 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 rim of claim 5 wherein, 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 rim of claim 6 wherein, 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 rim of claim 5 wherein, The rim base, seat ring, first retaining ring, second retaining ring, and lock ring are located on the same axis.

9. The method of manufacturing a rim base according to any one of claims 1 to 4, wherein include: Rough machining is performed on the ring forgings for mounting the seat ring, connecting the cylinder, and supporting the seat ring. An mounting bevel is machined on one side of the ring forging for mounting the seat ring, and a left cylinder bevel and a right cylinder bevel are machined on both sides of the ring forging for connecting the cylinder, respectively. A support bevel is machined on one side of the ring forging for supporting the seat ring. The rough-machined mounting ring, connecting cylinder and supporting ring ring forgings are assembled and welded into a blank of the rim base. The mounting ring and supporting ring ring forgings are located on both sides of the connecting cylinder ring forging. Ultrasonic and X-ray inspections were used to examine the weld bead of the rim base blank. The rim base blank was then subjected to overall tempering to eliminate welding stress. Finally, the rim base blank was precision machined to obtain the rim base.

10. The method of manufacturing a rim base according to claim 9, wherein After the ring forgings for mounting the seat ring, connecting the cylinder and supporting the seat ring 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.

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