Wear-resistant thrust wheel

Abstract

The utility model discloses a wear-resistant thrust wheel which comprises a wheel body and a wheel core assembly penetrating through the wheel body. The wheel body comprises a main body and two end pieces detachably installed at the two ends of the main body respectively. The wheel core assembly comprises a wheel shaft, a shaft sleeve and an end frame, the shaft sleeve and the end frame are arranged at the two ends of the wheel shaft in a sleeving mode, the shaft sleeve is filled in a gap between the wheel shaft and the wheel body, and the end frame is located on the outer side of the wheel body. The thrust wheel body is made of the silicon manganese steel, and the silicon manganese steel material has good comprehensive mechanical performance and provides solid foundation support for the thrust wheel body. The first wear-resistant coating and the second wear-resistant coating are distributed inside and outside the outer side of the wheel body, so that the hardness and the wear resistance of the coatings are remarkably improved, external wear and impact are effectively resisted, the wear resistance, the corrosion resistance and the oxidation resistance of the coatings are further improved, and more powerful protection is provided for the thrust wheel.

Description

Technical Field

[0001] This utility model relates to the field of support roller technology, and in particular to a wear-resistant support roller. Background Technology

[0002] During the operation of tracked construction machinery, the track roller, as a core load-bearing component, forms direct and continuous contact with the track links. This contact relationship means that the track roller not only has to bear the enormous weight of the construction machinery itself, but also experiences high-frequency relative friction with the track links under the drive of the tracks. The resulting pressure and friction cause continuous wear and tear on the track roller surface. Even more challenging is the fact that in typical operating scenarios such as mines and construction sites, the track roller must also withstand the continuous scouring and grinding of hard particles such as soil and gravel. These particles are constantly squeezed and slid within the contact gap between the track and the track roller, accelerating the peeling of the wheel surface material like abrasives, further exacerbating the wear.

[0003] Existing track rollers exhibit significant shortcomings when dealing with the aforementioned working conditions. Firstly, rapid wear on the wheel surface is a common phenomenon. Ordinary track rollers often use medium-carbon alloy steels such as 50Mn and 40Mn2 as the wheel body material. Even after tempering and surface hardening, the wheel surface hardness typically only reaches 45-52 HRC. Under heavy loads, the contact stress between the wheel surface and the track link can reach 800-1000 MPa, causing wear marks such as grooves and dents to appear on the wheel surface in a short time, resulting in an average service life of less than 2000 hours. Secondly, the rim, as the edge support structure of the track roller, bears lateral forces during track guidance and is prone to deformation or even breakage due to material fatigue. Especially when operating on rough terrain, the rim deformation rate is more than 30% higher than on smooth roads, directly affecting the normal operating trajectory of the track. Utility Model Content

[0004] This utility model discloses a wear-resistant support roller, which mainly solves the problem of insufficient wear resistance of support rollers.

[0005] To achieve the aforementioned objective, the technical solution of this utility model is implemented as follows:

[0006] This utility model provides a wear-resistant support roller, including a wheel body and a wheel core assembly that runs through the wheel body; the wheel body includes a main body and two end pieces that are detachably installed at both ends of the main body; the wheel core assembly includes a wheel axle, bushings fitted at both ends of the wheel axle and an end frame, the bushings filling the gap between the wheel axle and the wheel body, and the end frames located on the outside of the wheel body.

[0007] Preferably, multiple threaded holes are evenly distributed along the circumference of the end face of the wheel body, and multiple bolts are inserted through the end piece, with the ends of the bolts inserted into the threaded holes.

[0008] Preferably, multiple slots are evenly distributed along the circumference of the end face of the wheel body, and the multiple slots and multiple threaded holes are staggered. Multiple insertion rods are fixedly installed on the end piece, and the insertion rods are inserted into the slots.

[0009] Preferably, the edge of the end piece is provided with a mud discharge groove, the cross section of the mud discharge groove is trapezoidal, and wear-resistant protrusions are formed between adjacent mud discharge grooves; the mud discharge groove is inclined along the circumference of the end piece, and the inclination angle is 15°-30°.

[0010] Preferably, the ends of the two end pieces that are far apart from each other are both provided with stepped holes, and the ends of the two end frames that are close to each other are provided with inner and outer convex plates, with a height difference between the inner and outer convex plates and their ends extending into the stepped holes.

[0011] Preferably, the bushing is configured with a convex structure, and the larger end of the bushing is located in the stepped hole, with the inner convex plate in contact with the bushing.

[0012] Preferably, connecting holes of different lengths are provided on the axle and the end frame, and connecting pipes are provided through the corresponding connecting holes.

[0013] Preferably, the base material for manufacturing the wheel body is silicon manganese steel; a first wear-resistant coating is integrally formed on the wheel body through a lost foam negative pressure casting process, the first wear-resistant coating being a particle-reinforced steel-based surface composite coating; a second wear-resistant coating is formed on the outside of the first wear-resistant coating through a reactive supersonic flame spraying process.

[0014] The advantages or beneficial effects of the above technical solutions include at least the following:

[0015] 1. The support roller body of this utility model is made of silicon manganese steel, which has good comprehensive mechanical properties and provides a solid foundation for the support roller body. A first wear-resistant coating and a second wear-resistant coating are distributed on the outer side of the roller body, which significantly improves the hardness and wear resistance of the coating, effectively resists external wear and impact, and further improves the wear resistance, corrosion resistance and oxidation resistance of the coating, providing stronger protection for the support roller.

[0016] 2. The wheel body of this utility model consists of a detachably connected main body and end pieces. When the end pieces are severely worn, they can be disassembled and replaced, avoiding the need to replace the entire support wheel due to wear at the end of the support wheel, thus reducing wear costs. Attached Figure Description

[0017] The accompanying drawings illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the principles of the present invention. These drawings are included to provide a further understanding of the present invention and are incorporated in and constitute a part of this specification.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a first structural schematic diagram of the wheel body of this utility model;

[0020] Figure 3 This is a schematic diagram of the second structure of the wheel body of this utility model;

[0021] Figure 4 This is a first structural schematic diagram of the wheel core assembly of this utility model;

[0022] Figure 5 This is a schematic diagram of the second structure of the wheel core assembly of this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Wheel body;

[0025] 11. Mud discharge trough; 12. Stepped hole; 13. Main body; 14. End piece; 15. Threaded hole; 16. Slot; 17. Bolt; 18. Insert rod;

[0026] 2. Wheel core assembly;

[0027] 21. Wheel axle; 22. Connecting hole; 23. Bushing; 24. End frame; 25. Connecting pipe; 26. Outer convex plate; 27. Inner convex plate. Detailed Implementation

[0028] Embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the accompanying drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0029] It should be noted that, where there is no conflict, the embodiments and features described in these embodiments can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc., mentioned in this utility model are only used to distinguish different devices, modules, or units, and are not used to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0031] It should be noted that the terms "a" and "a plurality of" used in this utility model are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0032] The names of the messages or information exchanged between the multiple devices in this embodiment of the invention are for illustrative purposes only and are not intended to limit the scope of these messages or information.

[0033] like Figure 1 As shown, in order to improve the wear resistance of the support roller, this embodiment provides a new support roller technical solution. In this technical solution, the support roller includes a wheel body 1 and a wheel core assembly 2 that runs through the wheel body 1. The end of the wheel core assembly 2 that protrudes from the wheel body 1 is connected to the main body of the tracked engineering machine, and it plays an important role in supporting the weight and load of the equipment.

[0034] The base material for manufacturing wheel body 1 is silicon manganese steel, which has good comprehensive mechanical properties and provides a solid foundation for the support wheel body.

[0035] A first wear-resistant coating is integrally formed on the wheel body 1 using a lost foam negative pressure casting process. The first wear-resistant coating is a composite coating on a particle-reinforced steel substrate surface. The materials used to manufacture the first wear-resistant coating include a first wear-resistant coating powder, which comprises: 40-44% reinforcing particles, 20-22% high-carbon ferrochrome powder, 8% PVB, 30-33% EPS, 2% CMC, and 0.1% n-octanol, by volume percentage. The reinforcing particles include at least one of WC, SiC, TiC, B4C, Al₂O₃, TiN, BN, or ZrO₂. The lost foam negative pressure casting process achieves a strong metallurgical bond between the first wear-resistant coating and the support wheel substrate. The reinforcing particles are uniformly distributed within the steel substrate, significantly improving the coating's hardness and wear resistance, effectively resisting external wear and impact.

[0036] A second wear-resistant coating is formed on the outer side of the first wear-resistant coating using a reactive supersonic flame spraying process. The second wear-resistant coating powder comprises 35-60% Ti, 20-50% Ni, and 12-25% B4C. The thickness of the second wear-resistant coating is 0.25mm-0.3mm by weight. The reactive supersonic flame spraying process gives the second wear-resistant coating a dense microstructure. The interaction of components such as Ti, Ni, and B4C further improves the coating's wear resistance, corrosion resistance, and oxidation resistance, providing stronger protection for the track roller.

[0037] like Figure 3 As shown, in order to replace the wheel body 1 after the end wears out, thereby reducing the loss caused by wear, the wheel body 1 includes a main body 13 and two end pieces 14 that are respectively detached and installed at both ends of the main body 13.

[0038] like Figure 3 As shown, multiple threaded holes 15 are evenly distributed along the circumference of the end face of the main body 13, and multiple bolts 17 are inserted through the end piece 14. The ends of the bolts 17 are inserted into the threaded holes 15. The bolts 17 are high-strength bolts, which realize the split assembly of the wheel body 1, which facilitates the later maintenance and replacement of easily worn parts and reduces the cost of use.

[0039] like Figure 3 As shown, multiple slots 16 are evenly distributed along the circumference of the end face of the main body 13. The multiple slots 16 and multiple threaded holes 15 are staggered. Multiple insertion rods 18 are fixedly installed on the end piece 14. The insertion rods 18 are inserted into the slots 16. Under the action of the insertion rods 18, the strength of the connection between the end piece 14 and the main body 13 is enhanced, the external force on the bolt 17 is reduced, and its service life is extended.

[0040] like Figure 2 As shown, a mud discharge groove 11 can also be provided on the edge of the end piece 14. The cross-section of the mud discharge groove 11 is trapezoidal, and wear-resistant protrusions are formed between adjacent mud discharge grooves 11. The mud discharge groove 11 is inclined around the end piece 14 at an angle of 15°-30°. When the wheel 1 rotates, the attached mud can be discharged along the mud discharge groove, reducing the abrasion of the wheel surface by the mud.

[0041] like Figure 4 , Figure 5 As shown, the wheel core assembly 2 includes a wheel axle 21, bushings 23 sleeved on both ends of the wheel axle 21, and end frame 24. The bushings 23 fill the gap between the wheel axle 21 and the wheel body 1, and the end frame 24 is located on the outside of the wheel body 1 and connected to the tracked engineering machine body.

[0042] like Figure 4 , Figure 5As shown, in order to achieve a stable connection between the wheel axle 21 and the end frame 24, connecting holes 22 of different lengths are provided on the wheel axle 21 and the end frame 24 respectively, and connecting pipes 25 are provided through the connecting holes 22 facing each other.

[0043] like Figure 4 , Figure 5 As shown, in order to connect the axle 21 and the wheel body 1, the ends of the two end pieces 14 that are far apart from each other are both provided with stepped holes 12, and the ends of the two end frames 24 that are close to each other are both provided with inner convex plates 27 and outer convex plates 26. There is a height difference between the inner convex plates 27 and the outer convex plates 26, and their ends both extend into the stepped holes 12.

[0044] like Figure 4 , Figure 5 As shown, the bushing 23 is configured as a convex structure, and the larger end of the bushing 23 is located inside the stepped hole 12, and the inner convex plate 27 is in contact with the bushing 23.

[0045] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0046] Those skilled in the art should understand that the above embodiments are merely for clearly illustrating the present invention and are not intended to limit the scope of the present invention. For those skilled in the art, other changes or modifications can be made based on the above-described invention, and these changes or modifications still fall within the scope of the present invention.

Claims

1. A wear-resistant support roller, characterized in that, The wheel includes a wheel body and a wheel core assembly that runs through the wheel body; the wheel body includes a main body and two end pieces that are detachably installed at both ends of the main body; the wheel core assembly includes a wheel axle, bushings fitted at both ends of the wheel axle, and end frames, the bushings filling the gap between the wheel axle and the wheel body, and the end frames located on the outside of the wheel body.

2. The wear-resistant support roller as described in claim 1, characterized in that, Multiple threaded holes are evenly distributed along the circumference of the end face of the main body, and multiple bolts are inserted through the end piece, with the ends of the bolts inserted into the threaded holes.

3. The wear-resistant support roller as described in claim 2, characterized in that, Multiple slots are evenly distributed along the circumference of the end face of the main body, and the multiple slots are staggered with multiple threaded holes. Multiple insertion rods are fixedly installed on the end piece, and the insertion rods are inserted into the slots.

4. The wear-resistant support roller as described in claim 1, characterized in that, The edge of the end piece is provided with a mud discharge groove, the cross section of which is trapezoidal, and wear-resistant protrusions are formed between adjacent mud discharge grooves; the mud discharge groove is inclined along the circumference of the end piece, with an inclination angle of 15°-30°.

5. The wear-resistant support roller as described in claim 1, characterized in that, The ends of the two end pieces that are far apart from each other are each provided with stepped holes, and the ends of the two end frames that are close to each other are each provided with inner and outer convex plates, with a height difference between the inner and outer convex plates and their ends extending into the stepped holes.

6. The wear-resistant support roller as described in claim 5, characterized in that, The bushing is configured with a convex structure, and the larger end of the bushing is located in the stepped hole, with the inner convex plate in contact with the bushing.

7. The wear-resistant support roller as described in claim 1, characterized in that, Different lengths of connecting holes are provided on the axle and the end frame, and connecting pipes are installed through the corresponding connecting holes.

8. The wear-resistant support roller as described in claim 1, characterized in that, The base material for manufacturing the wheel body is silicon manganese steel; a first wear-resistant coating is integrally formed on the wheel body by a lost foam negative pressure casting process, and the first wear-resistant coating is a particle-reinforced steel base surface composite coating; A second wear-resistant coating is formed on the outside of the first wear-resistant coating using a reactive supersonic flame spraying process.

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