Combined wheel remanufactured from waste crane wheel

Abstract

The invention discloses a combined type wheel remanufactured from waste crane wheels. The combined type wheel comprises a combined type wheel inner ring, a combined type wheel outer ring, a tensioning connecting assembly and a U-shaped groove type working sleeve. A center hole of the combined type wheel inner ring is connected with a crane axle, the combined type wheel inner ring is connected with the two combined type wheel outer rings through the tensioning connecting assembly, and the U-shaped groove type working sleeve is installed on an outer ring U-shaped face of the combined type wheel outer rings and used for being matched with an external track. Compared with the prior art, the assembly and disassembly of the axle and the inner hole of the combined wheel inner ring and the assembly and disassembly of the combined wheel outer ring and the working sleeve are facilitated, and the whole wheel set does not need to be disassembled when the wheel is maintained and replaced; the wheel or the working sleeve can be replaced on line, the maintenance time and the shutdown time are greatly shortened, and the production efficiency can be greatly improved. And the waste crane wheels are reprocessed and manufactured, so that the waste crane wheels can be recycled, and the service life of the wheels can be greatly prolonged.

Description

Technical Field

[0001] The invention belongs to the field of crane wheels, in particular to a combined wheel remanufactured from waste crane wheels. Background Art

[0002] The proportion of replacement of new wheels due to wheel wear in the use and maintenance costs of cranes is relatively high. During the replacement process, the disassembly and reassembly requires long working hours, high manpower, small working space and high-altitude operations. Each replacement of a set of wheels requires 8-10 fitters and 8-10 hours of maintenance. Especially after the crane travel mechanism wheel set fails, the long-term passive shutdown for maintenance will cause huge economic losses to the steel plant. Moreover, when replacing the wheel, the entire wheel set must be removed and hoisted to the designated location, and then the axle and bearing are removed before the new wheel is reinstalled with the axle, bearing, etc. to form a wheel set. Therefore, the quality and performance of large-scale cast crane wheels are very critical. If the strength, hardness, and hardened layer depth of the crane wheel tread working layer can be improved, and its wear resistance can be improved, the service life of the wheel can be extended, the replacement frequency can be reduced, and the cost and efficiency of steel enterprises can be reduced.

[0003] At present, the integral forged wheels generally use materials such as 42CrMo and 65Mn, and the forging and heat treatment processes are relatively mature, so there is little room for further improvement in the performance of the working layer. If the original working layer of the scrapped crane wheel is cut off, and the Cr3 and Cr5 support roller materials scrapped by the steel enterprise are used to separately forge and heat-treat the wheel tread annular working sleeve, the grain size grade, yield strength and tensile strength, hardness uniformity and hardened layer depth of the working layer are improved, and the working sleeve is assembled into a whole with the wheel inner ring and the axle through the mechanical sleeve principle, it can not only improve and enhance the performance of the wheel tread working layer, but also realize the independent rapid and efficient replacement and assembly and disassembly of the wheel working layer without disassembling the axle. Summary of the invention

[0004] The purpose of the present invention is to provide a new type of combined wheel for remanufacturing of waste crane wheels, which can improve and enhance the performance of the wheel tread working layer and realize the independent rapid and efficient replacement and assembly and disassembly of the wheel working layer without disassembling the axle.

[0005] The technical solution to achieve the purpose of the present invention is: a modular wheel for remanufacturing of waste crane wheels, including a modular wheel inner ring, a modular wheel outer ring, a tensioning connection assembly, and a U-shaped groove working sleeve; the center hole of the modular wheel inner ring is connected to the crane axle, the modular wheel inner ring and the two modular wheel outer rings are connected by the tensioning connection assembly, the U-shaped groove working sleeve is installed on the outer ring U-shaped surface of the modular wheel outer ring, and the U-shaped groove working sleeve is used to cooperate with the external track.

[0006] Furthermore, the inner ring of the combined wheel is a symmetrical structure with the central plane in the thickness direction of the wheel as the symmetry plane, and an annular boss is arranged in the middle, and through holes are evenly distributed on the boss.

[0007] Furthermore, symmetrical annular ramp structures are arranged on both sides of the annular boss of the inner ring of the combined wheel; an annular ramp structure is arranged on the inner ring of the outer ring of the combined wheel and the ramp structure is symmetrical with the central plane in the thickness direction of the wheel as the symmetry plane.

[0008] Furthermore, the tensioning connection assembly includes a tensioning ring; the tensioning ring is an annular structure with the combined wheel as the axis, the inner ring and the outer ring of the tensioning ring are both provided with inclined surfaces and the inclined surfaces are symmetrical with the central plane in the thickness direction of the wheel as the symmetry plane, and are used to cooperate with the inner ring and the outer ring of the combined wheel.

[0009] Furthermore, the threaded holes and through holes are evenly spaced on the tensioning ring. During installation, the threaded holes on one tensioning ring of the tensioning rings on both sides of the inner ring of the combined wheel are aligned with the axes of the through holes on the other tensioning ring.

[0010] Furthermore, the tensioning connection assembly also includes screws and spring washers; during installation, the screw rod of the screw passes through the spring washer, the through hole on the tensioning ring, the through hole on the inner ring boss of the combined wheel in sequence, and cooperates with the threaded hole on the tensioning ring on the other side, and the screw is gradually tightened so that the distance between the tensioning rings on both sides gradually becomes smaller.

[0011] Furthermore, a groove is machined on the combined wheel inner ring and the combined wheel outer ring in a direction perpendicular to the end surface to release stress generated during the installation process.

[0012] Furthermore, the surfaces of the U-shaped groove working sleeve and the combined wheel outer ring that cooperate with each other are arranged as a tapered structure, wherein the U-shaped cross-sectional opening of the U-shaped groove working sleeve is larger than the bottom, and the U-shaped cross-sectional opening of the combined wheel outer ring is smaller than the bottom; it is used to make the U-shaped groove working sleeve have an automatic centering function after installation; the two sides of the U-shaped groove working sleeve are squeezed inward by the two combined wheel outer rings.

[0013] Furthermore, it also includes a pressure injection oil cup and an annular oil storage porous anti-friction ring; the outer corners of the U-shaped groove working sleeve are cut and chamfered, and after assembly, a closed oil storage cavity is formed with the transition fillet inside the outer ring of the combined wheel to store lubricating oil; an oil filling hole is processed on the side of the outer ring of the combined wheel for installing a straight-through pressure injection oil cup, and the oil cup 6 is opened to inject lubricating oil into the closed oil storage cavity.

[0014] Furthermore, it also includes an annular oil storage type porous anti-friction ring, an annular groove is processed at the rounded corner of the U-shaped groove type working sleeve, and the annular groove is connected to the closed oil storage cavity through an oil hole; an annular oil storage type porous anti-friction ring is installed in the annular groove, and the material of the annular oil storage type porous anti-friction ring 8 is a porous cotton sheet, so as to achieve lubrication between the U-shaped groove type working sleeve and the external track.

[0015] Compared with the prior art, the present invention has the following significant advantages:

[0016] 1. In the present invention, the structure of the combined wheel inner ring, the combined wheel outer ring, and the tensioning connection assembly facilitates the installation and removal of the axle and the inner hole of the combined wheel inner ring, and the combined wheel outer ring and the working sleeve. When maintaining and replacing the wheel, there is no need to disassemble the entire wheel set; the wheel or working sleeve can be replaced online, which greatly shortens the maintenance time and downtime, and can greatly improve production efficiency. The interference fit between the wheel axle and the combined wheel inner ring is completed by the simple tensioning principle, avoiding the complicated and costly press-fitting process.

[0017] 2. The combined wheel of the present invention is made by reprocessing waste wheels. The worn and failed parts of the waste wheels only account for a small part of the whole wheel, and the rest can be recycled. Only high-performance U-shaped groove working sleeves are manufactured in a separate manufacturing method to improve the strength, wear resistance and other working performance of the working layer. Not only can the waste crane wheels be recycled, but also the service life of the wheels can be greatly improved.

[0018] 3. The matching surfaces of the U-groove working sleeve and the combined wheel inner ring of the present invention are designed to be a tapered structure with an automatic centering function. After assembly, the two sides of the U-groove working sleeve are squeezed inward by the two combined wheel outer rings, and the working sleeve is in a state of micro-compression stress, which is beneficial to inhibiting the initiation and expansion of fatigue cracks and can increase the service life of the working sleeve.

[0019] 4. The present invention provides a lubrication structure at the corner of the U-shaped groove working sleeve. When the wheel and the track move along the axial direction of the wheel, the friction-reducing cotton sheet first contacts the side of the crane track. After being squeezed, the lubricating oil flows along the side of the track and the wheel rim. Only the side of the track and the wheel rim are lubricated at a fixed point, which can effectively reduce the sliding friction coefficient between the wheel rim and the side of the crane track, and has a significant effect on alleviating the severe dry sliding friction wear on the side of the wheel rim. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the combined wheel of the present invention;

[0021] Figure 2 A two-dimensional structural cross-sectional view of the combined wheel of the present invention;

[0022] Figure 3It is a two-dimensional structural schematic diagram of the combined wheel of the present invention;

[0023] Figure 4 The partial structure of the combined wheel of the present invention is enlarged Figure 1 ;

[0024] Figure 5 The partial structure of the combined wheel of the present invention is enlarged Figure 2 ;

[0025] Figure 6 A two-dimensional partial view of the combined wheel of the present invention;

[0026] Figure 7 It is a schematic diagram of the combined wheel inner ring (inner tension sleeve);

[0027] Figure 8 It is a schematic diagram of the tensioning ring;

[0028] Fig. 9 It is a schematic diagram of the combined wheel outer ring (external tensioning sleeve);

[0029] Fig.10 It is a schematic diagram of a U-shaped groove type working sleeve;

[0030] Fig.11 It is a schematic diagram of the structure of a hexagonal cylindrical head screw for connection;

[0031] Fig.12 This is a schematic diagram of the structure of a heavy-duty spring washer;

[0032] Fig.13 This is a schematic diagram of the straight-through pressure injection oil cup structure;

[0033] Fig.14 It is a schematic diagram of the structure of an annular oil storage porous anti-friction ring.

[0034] Reference numerals:

[0035] 1-Combined wheel inner ring (inner tension sleeve); 2-Hexagonal cylindrical head screw; 3-Heavy spring washer; 4-Tensioning ring; 5-Combined wheel outer ring (outer tension sleeve); 6-Straight-through pressure injection oil cup; 7-U-shaped groove working sleeve; 8-Annular oil storage porous anti-friction ring; DETAILED DESCRIPTION

[0036] The following is combined with Figure 1-14 The present invention is further described with reference to the accompanying drawings and specific embodiments.

[0037] The present invention is a combined wheel for remanufacturing waste crane wheels, which can improve and enhance the performance of the crane wheel tread working layer, and can realize the independent rapid and efficient replacement and assembly and disassembly of the wheel working layer without disassembling the axle.

[0038] A modular wheel for remanufacturing waste crane wheels: mainly comprising a modular wheel inner ring (inner tensioning sleeve) 1, a modular wheel outer ring (outer tensioning sleeve) 5, a tensioning connection assembly, a straight-through pressure injection oil cup 6, a U-shaped groove working sleeve 7 and an annular oil storage porous friction reducing ring 8.

[0039] The combined wheel inner ring 1 is an axisymmetric structure symmetrical about the thickness center plane, with an annular boss arranged in the middle, and the boss is evenly provided with six through holes. The middle hole of the combined wheel inner ring 1 is installed on the axle.

[0040] Combined wheel outer ring 5, each combined wheel is provided with two combined wheel outer rings 5, which are symmetrically arranged outside the combined wheel inner ring 1 and connected to the combined wheel inner ring 1 through a tensioning connection assembly.

[0041] like Figure 4 As shown, the contact and matching surface between the combined wheel inner ring 1 and the tensioning ring 4 in the tensioning connection assembly is a tapered annular slope structure; the contact and matching surface between the combined wheel outer ring 5 and the tensioning ring 4 in the tensioning connection assembly is a tapered annular slope structure.

[0042] The tensioning connection assembly includes: a hexagonal cylindrical head screw 2, a heavy spring washer 3 and a tensioning ring 4;

[0043] The tension ring 4 is an annular structure with the combined wheel as the axis. After assembly, the inner ring bevel of the tension ring 4 contacts and cooperates with the annular slope on the combined wheel inner ring 1, and the outer ring bevel of the tension ring 4 contacts and cooperates with the inner ring annular slope of the combined wheel outer ring 5. The tension ring 4 has 3 threaded holes and 3 through holes evenly spaced.

[0044] When the wheel is assembled, the tensioning ring 4 is symmetrically arranged on both sides of the combined wheel inner ring 1, and the threaded hole on the tensioning ring 4 on one side is aligned with the central axis of the through hole on the tensioning ring on the other side; the hexagonal cylindrical head screws 2 are distributed on both sides of the tensioning ring 4, and three are evenly distributed on each side; the screw of the hexagonal cylindrical head screw 2 passes through the heavy spring washer 3, the through hole on the tensioning ring 4, the through hole on the boss of the combined wheel inner ring 1 and the threaded hole on the tensioning ring 4 on the other side in turn, and the hexagonal cylindrical head screw 2 is gradually tightened to gradually reduce the distance between the tensioning rings 4 on both sides, and the outer ring inclined surfaces of the tensioning rings on both sides squeeze the inner ring inclined surfaces of the two combined wheel outer rings 5 ​​towards each other, and the inner ring inclined surfaces of the tensioning rings on both sides squeeze the inclined surfaces of the combined wheel inner ring 1 towards each other, and then rely on the plane pressure and friction generated during tightening to achieve the connection between the combined wheel inner ring (inner tensioning sleeve) 1 and the combined wheel outer ring (outer tensioning sleeve) 5.

[0045] After assembly, the annular slope structure of the combined wheel inner ring 1 and the two combined wheel outer rings 5 ​​forms a structure with a small middle space and large spaces on both sides; the two tensioning rings 4 form a structure with a small middle entity and a large outer ring entity.

[0046] Heavy-duty spring washer 3: The structure is the same as that of ordinary spring washers, suitable for larger loads and vibration environments.

[0047] like Figure 6 As shown, the inner ring 1 of the combined wheel is processed with a small groove in a direction perpendicular to the end face to release the stress generated during the installation process; Figure 8 As shown, a small groove is machined into the outer ring 5 of the combined wheel in a direction perpendicular to the end face to release the stress generated during the installation process.

[0048] The outer rings of the two symmetrically arranged combined wheel outer rings 5 ​​cooperate with the U-shaped groove type working sleeve 7; Figure 5 As shown, the outer ring surfaces of the two combined wheel outer rings 5 ​​are provided with a taper, so that the U-shaped cross-section communicating between the two combined wheel outer rings 5 ​​has a small opening and a large bottom;

[0049] like Figure 3 As shown, the U-shaped groove working sleeve 7 and the internal matching surface of the combined wheel outer ring 5 are designed to be a tapered structure with a larger outer side and a smaller inner side (so that the U-shaped cross-section opening of the U-shaped groove working sleeve 7 is larger and the bottom is smaller), so that the formed U-shaped cross-section opening is larger than the bottom, so that it has an automatic centering function after installation; after the assembly is completed, the two sides of the U-shaped groove working sleeve 7 are squeezed inward by the two combined wheel outer rings, and the working sleeve is in a state of micro-compression stress, so that the matching is reliable, and the U-shaped groove working sleeve 7 is restricted from coming out of the outer rings of the two symmetrically arranged combined wheel outer rings 5 ​​(such as Figure 5 as shown).

[0050] The U-shaped groove type working sleeve 7 is cut and processed with a large chamfer at the outer corner. After assembly, it forms a closed oil storage cavity with the transition fillet inside the outer ring 5 of the combined wheel to store lubricating oil (such as Figure 3 shown);

[0051] An oil filling hole is processed on the side of the combined wheel outer ring 5 for installing a straight-through pressure-filled oil cup 6. By opening the oil cup 6, lubricating oil can be injected into the closed oil storage cavity formed by the U-groove working sleeve 7 and the inner transition fillet of the combined wheel outer ring 5.

[0052] An annular groove is processed at the rounded corner of the U-shaped groove working sleeve 7, and the annular groove is connected to the oil storage cavity through an oil hole; an annular oil storage type porous anti-friction ring 8 is installed in the annular groove, and the material of the annular oil storage type porous anti-friction ring 8 is a porous cotton sheet, so as to realize lubrication between the U-shaped groove working sleeve and the external track.

[0053] When the wheel and the track move along the wheel axis, the annular oil storage porous anti-friction ring 8 first contacts the side of the crane track, and the lubricating oil flows along the side of the track and the wheel rim after being squeezed, and only the side of the track and the wheel rim are lubricated at a fixed point (the wheel tread and the track tread cannot be lubricated, otherwise the wheel will slip on the track). It can effectively reduce the sliding friction coefficient between the wheel rim and the side of the crane track, and has a significant effect on alleviating the severe dry sliding friction wear on the side of the wheel rim.

[0054] The present invention utilizes waste crane wheels, cuts off the worn area (working layer), and then uses a separately forged, heat-treated, high-strength, high-wear-resistant annular U-shaped grooved working sleeve to replace the original wheel working layer, which can not only greatly improve the service life of the wheel, but also can quickly replace the working sleeve after the annular working sleeve reaches the end of its service life, without the need to replace other parts of the wheel, thereby greatly reducing material consumption;

[0055] The internal sleeve combined wheel can achieve efficient interference fit between the wheel and the axle, and between the wheel and the annular working sleeve, and can achieve rapid, efficient and non-destructive online disassembly, which can greatly reduce the wheel maintenance time and downtime;

[0056] The outer ring of the combined wheel is processed with oiling holes to install the straight-through pressure oiling cup GB152. The outer corners of the U-shaped groove working sleeve are cut with large bevel chamfers. After assembly, a closed oil storage cavity is formed with the transition fillet inside the outer ring of the combined wheel. The U-shaped groove working sleeve is processed with an annular groove at the fillet to embed a porous cotton sheet. The annular groove is connected to the oil storage cavity through the oil hole. When the wheel and the track move along the axial direction of the wheel, the friction-reducing cotton sheet first contacts the side of the crane track. After being squeezed, the lubricating oil flows along the side of the track and the wheel rim, and only the track side and the wheel rim are lubricated at fixed points (the wheel tread and the track tread cannot be lubricated, otherwise the wheel will slip on the track). It can effectively reduce the sliding friction coefficient between the wheel rim and the side of the crane track, and has a significant effect on alleviating the severe dry sliding friction and wear on the side of the wheel rim.

[0057] The above shows and describes the basic principle, main features and advantages of this invention. This invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principle of this invention. Without departing from the spirit and scope of this invention, this invention may have various changes and improvements, which fall within the scope of this invention to be protected. The scope of protection of this invention is defined by the attached claims and their equivalents.

Claims

1. A combined wheel for remanufacturing waste crane wheels, characterized in that: It includes a combined wheel inner ring, a combined wheel outer ring, a tensioning connection component, and a U-shaped groove working sleeve; the center hole of the combined wheel inner ring is connected to the crane axle, the combined wheel inner ring and two combined wheel outer rings are connected by the tensioning connection component, the U-shaped groove working sleeve is installed on the outer ring U-shaped surface of the combined wheel outer ring, and the U-shaped groove working sleeve is used to cooperate with the external track.

2. The combined wheel remanufactured from waste crane wheels according to claim 1, characterized in that: The inner ring of the combined wheel is a symmetrical structure with the central plane in the thickness direction of the wheel as the symmetry plane, with an annular boss arranged in the middle and through holes evenly distributed on the boss.

3. The combined wheel remanufactured from waste crane wheels according to claim 1, characterized in that: Symmetrical annular ramp structures are arranged on both sides of the annular boss of the inner ring of the combined wheel; an annular ramp structure is also arranged on the inner ring of the outer ring of the combined wheel, and the ramp structure is symmetrical with the central plane in the thickness direction of the wheel as the symmetry plane.

4. The combined wheel remanufactured from scrap crane wheels according to claim 1, characterized in that: The tensioning connection assembly includes a tensioning ring; the tensioning ring is an annular structure with the axis of the combined wheel as the axis center, the inner ring and the outer ring of the tensioning ring are both provided with inclined surfaces and the inclined surfaces are symmetrical with the central plane in the thickness direction of the wheel as the symmetry plane, and are used to cooperate with the inner ring and the outer ring of the combined wheel.

5. The combined wheel remanufactured from waste crane wheels according to claim 4, characterized in that: The threaded holes and through holes are evenly spaced on the tensioning ring. During installation, the threaded holes on one tensioning ring of the tensioning rings on both sides of the inner ring of the combined wheel are aligned with the axes of the through holes on the other tensioning ring.

6. The combined wheel remanufactured from scrap crane wheels according to claim 4, characterized in that: The tensioning connection assembly also includes screws and spring washers. During installation, the screw rod passes through the spring washer, the through hole on the tensioning ring, the through hole on the boss of the inner ring of the combined wheel, and the threaded hole on the tensioning ring on the other side in sequence, and the screw is gradually tightened so that the distance between the tensioning rings on both sides gradually decreases.

7. The combined wheel remanufactured from scrap crane wheels according to claim 1, characterized in that: A groove is machined on the combined wheel inner ring and the combined wheel outer ring in a direction perpendicular to the end face to release stress generated during installation.

8. The combined wheel remanufactured from scrap crane wheels according to claim 1, characterized in that: The surfaces of the U-shaped groove working sleeve and the combined wheel outer ring that cooperate with each other are both set to a tapered structure, wherein the U-shaped cross-sectional opening of the U-shaped groove working sleeve is larger than the bottom, and the U-shaped cross-sectional opening of the combined wheel outer ring is smaller than the bottom; it is used to enable the U-shaped groove working sleeve to have an automatic centering function after installation; the two sides of the U-shaped groove working sleeve are squeezed inward by the two combined wheel outer rings.

9. The combined wheel remanufactured from scrap crane wheels according to claim 1, characterized in that: The combined wheel also includes an oil injection cup; a chamfer is set at the outer corner of the U-shaped groove working sleeve, and after assembly, it forms a closed oil storage cavity with the transition fillet inside the outer ring of the combined wheel for storing lubricating oil; an oil filling hole is processed on the side of the outer ring of the combined wheel for installing a straight-through oil injection cup, and the oil cup is opened to inject lubricating oil into the closed oil storage cavity.

10. The combined wheel remanufactured from scrap crane wheels according to claim 9, characterized in that: The combined wheel also includes an annular oil storage type porous anti-friction ring. An annular groove is processed at the rounded corner of the U-shaped groove type working sleeve. The annular groove is connected to the closed oil storage cavity through an oil hole. An annular oil storage type porous anti-friction ring is installed in the annular groove. The material of the annular oil storage type porous anti-friction ring is a porous cotton sheet, which realizes lubrication between the U-shaped groove type working sleeve and the external track.

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