Thrust wheel for excavator with large bearing capacity

Abstract

The utility model discloses a thrust wheel for a bearing large excavator, which relates to the technical field of excavator accessories and comprises a thrust wheel body, a thrust wheel shaft and a connecting seat, an oil injection groove is arranged in the thrust wheel shaft, an oil guide groove is arranged on the inner side of the oil injection groove, the connecting seat is connected to the side edge of the thrust wheel shaft through a clamping pin, and a wear-resistant layer is arranged on the surface of the thrust wheel body. A first sealing ring, a second sealing ring and a floating oil seal are arranged between the thrust wheel body and the thrust wheel shaft, a bearing ring is arranged on the thrust wheel shaft, a sand blocking cover is arranged on the bearing ring in the inward direction, an inward-concave containing groove is formed in the sand blocking cover in the inward direction, a sand removing device is arranged on one side of the thrust wheel shaft, and a plurality of sand removing blocks are arranged on the inner side of the sand removing device. The desanding block is composed of a scraping plate, a baffle and a guide groove. The thrust wheel has the advantages that the thrust wheel has good bearing performance, the friction force of rotation between the thrust wheel body and the thrust wheel shaft is reduced, the service life of the thrust wheel is prolonged, and good economic benefits can be generated.

Description

Technical Field

[0001] The utility model belongs to the field of excavator accessories, in particular to a supporting wheel for a large-bearing excavator. Background Art

[0002] An excavator is an earth-moving machine that uses a bucket to dig materials above or below the bearing surface and load them into a transport vehicle or unload them to a stockpile. Track rollers are essential components for the normal operation of an excavator. Track rollers of an excavator refer to components that bear the weight of the excavator and roll on the track rails (track links) or track shoe surfaces to prevent the track from slipping laterally. Track rollers are mainly composed of a wheel body, a main shaft, connectors, and a series of seals. They are important components of the excavator track transmission system.

[0003] Currently, the supporting roller has a complex structure, high production cost, is very easy to damage, and has a short lifespan.

[0004] Based on this, the utility model designs a load-bearing large excavator supporting wheel to solve the above problems. Utility Model Content

[0005] In order to make the technical problems to be solved, technical solutions and advantages of the present invention more clear, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0006] The specific technical solution of a load-bearing large excavator supporting wheel of the utility model is as follows:

[0007] A load-bearing roller for a large excavator comprises a roller body, a roller shaft passing through the roller body and a connecting seat connected to the side of the roller shaft, an oil filling groove is arranged inside the roller shaft, an oil guide groove is arranged inside the oil filling groove, the connecting seat is connected to the side of the roller shaft by a retaining pin, a wear-resistant layer is arranged on the surface of the roller body, a first sealing ring, a second sealing ring and a floating oil seal are arranged between the roller body and the roller shaft from outside to inside respectively, a bearing ring is arranged on the roller shaft, a sand blocking cover is arranged inwardly of the bearing ring, the sand blocking cover is arranged inwardly with an inwardly concave accommodating groove, a sand removing device is arranged on one side of the roller shaft, a plurality of sand removing blocks are arranged inwardly of the sand removing device, and the sand removing blocks are composed of a scraper, a baffle and a guide groove.

[0008] Furthermore, the contact surface between the track wheel body and the track wheel shaft is smooth.

[0009] Furthermore, the wear-resistant layer is made of chromium metal.

[0010] Furthermore, the first sealing ring is a hydrogenated nitrile rubber sealing ring.

[0011] Furthermore, the second sealing ring is a fluorosilicone rubber sealing ring.

[0012] Furthermore, the accommodating groove is in the shape of a platform which is larger toward the outside than toward the inside.

[0013] Furthermore, the sand removal device is in the shape of a platform which is smaller toward the outside than toward the inside.

[0014] Furthermore, the sand removal blocks are distributed rotationally symmetrically with the axis of the sand removal device as the center.

[0015] The utility model has the following advantages for a load-bearing large excavator supporting wheel:

[0016] 1. This utility model patent has a smooth contact surface between the supporting wheel body and the supporting wheel shaft, and an oil filling groove is arranged inside the supporting wheel shaft, and an oil guide groove is arranged inside the oil filling groove. The oil filling groove and the oil guide groove are connected. The smooth contact surface and lubricating oil can reduce the rotation friction between the supporting wheel body and the supporting wheel shaft, thereby improving the service life of the equipment;

[0017] 2. This utility model patent has a wear-resistant layer on the surface of the supporting wheel body. The wear-resistant layer is selected from chromium metal material. The chromium metal layer has high hardness, strong toughness and corrosion resistance, thereby improving the load-bearing capacity of the excavator;

[0018] 3. This utility model patent sets a first sealing ring, a second sealing ring and a floating oil seal from outside to inside between the supporting wheel body and the supporting wheel shaft, thereby improving the sealing and waterproof properties between the supporting wheel body and the supporting wheel shaft;

[0019] 4. This utility model patent can prevent foreign objects such as gravel, sand, mud and water from entering the supporting wheel body and the supporting wheel shaft by setting a sand blocking cover, a containing groove and a sand removing device, thereby further protecting the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a front structural schematic diagram of the utility model;

[0022] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the sand removal device of the utility model;

[0024] Figure numerals: 1. supporting wheel body; 2. supporting wheel shaft; 3. connecting seat; 4. retaining pin; 5. sand removal device; 6. containing groove; 7. bearing ring; 8. sand blocking cover; 9. first sealing ring; 10. floating oil seal; 11. oil filling groove; 12. oil guide groove; 13. second sealing ring; 14. sand removal block; 15. scraper; 16. baffle; 17. guide groove; 18. wear-resistant layer. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In order to better understand the purpose, structure and function of the utility model, the utility model is described in further detail below in conjunction with the accompanying drawings.

[0027] like Figure 1-4 As shown, a load-bearing roller for a large excavator comprises a roller body 1, a roller shaft 2 passing through the interior of the roller body 1 and a connecting seat 3 connected to the side of the roller shaft 2, wherein the roller shaft 2 passes through the roller body 1 and is rotatably connected in the roller body 1, the contact surface between the roller body 1 and the roller shaft 2 is smooth, thereby reducing the rotational friction between the roller body 1 and the roller shaft 2, an oil filling groove 11 is provided inside the roller shaft 2, an oil guide groove 12 is provided inside the oil filling groove 11, wherein the oil filling groove 11 is communicated with the oil guide groove 12, wherein the connecting seat 3 is connected to the side of the roller shaft 2 by a retaining pin 4, wherein a wear-resistant layer 18 is provided on the surface of the roller body 1, and the wear-resistant layer 18 is preferably made of chromium metal, the chromium metal layer has high hardness, strong toughness and corrosion resistance, thereby improving the load-bearing capacity of the excavator.

[0028] In the utility model, a first sealing ring 9 is arranged inwardly at both ends of the supporting wheel shaft 2, a second sealing ring 13 is arranged inwardly of the first sealing ring, and a floating oil seal 10 is arranged inwardly of the second sealing ring 13, wherein the first sealing ring 9, the second sealing ring 13 and the floating oil seal 10 are arranged between the supporting wheel body 1 and the supporting wheel shaft 2, wherein the first sealing ring 9 is preferably a hydrogenated nitrile rubber sealing ring, which has good corrosion resistance, tear resistance, compression deformation resistance, wear resistance and light resistance, wherein the second sealing ring 13 is preferably a fluorosilicone rubber sealing ring, which has good oil resistance, high temperature resistance and resistance to oxygen-containing compounds.

[0029] In the utility model, a bearing ring 7 is provided on the supporting shaft body 2, and a sand blocking cover 8 is provided inwardly of the bearing ring 7, wherein the supporting wheel shaft 2 passes through the center of the sand blocking cover 8, and the sand blocking cover 8 is installed on the supporting wheel shaft 2 through the bearing ring 7, and the sand blocking cover 8 is provided with an inwardly concave receiving groove 6 inwardly, wherein the receiving groove 6 is in a platform shape which is larger toward the outside than toward the inside, and a sand removal device 5 is provided on one side of the supporting wheel shaft 2, wherein the sand removal device 5 is in a platform shape which is smaller toward the outside than toward the inside, and a plurality of sand removal blocks 14 are provided on the inner side of the sand removal device 5, wherein the sand removal blocks 14 are rotationally symmetrically distributed around the axis of the sand removal device 5, and the sand removal blocks 14 are composed of a scraper 15, a baffle 16 and a guide groove 17.

[0030] In the present invention, the bearing ring 7 is waterproof and has a good waterproof effect, which can effectively prevent muddy water from penetrating.

[0031] The working principle of the utility model is as follows: the supporting wheels are installed on the chassis of the excavator through the connecting seats at both ends of the supporting wheel shaft, and the sand blocking cover is used to block the opening of the receiving groove, which can prevent foreign objects such as gravel, sand, mud and water from entering the receiving groove. When foreign objects penetrate into the receiving groove, the inclined surface of the receiving groove can collect the foreign objects on the outside of the receiving groove to prevent the foreign objects from entering between the supporting wheel body and the supporting wheel shaft. When foreign objects adhere to between the supporting wheel shaft and the supporting wheel body, the scraper on the sand removal device can scrape the foreign objects away when the supporting wheel body rotates, and then the scraped foreign objects will It is blocked by the baffle, and the side of the sand removal device is inclined, so foreign matter is collected in the guide groove under the blocking of the baffle, and then falls to the outside of the accommodating groove, preventing foreign matter from entering between the supporting wheel body and the supporting wheel shaft, causing wear to the supporting wheel body and the supporting wheel shaft; the first sealing ring, the second sealing ring and the floating oil seal are used to protect the sealing of the supporting wheel shaft and the supporting wheel body; when the supporting wheel body rotates on the supporting wheel shaft, the lubricating oil stored in the oil filling groove penetrates through the oil guide groove to provide lubrication between the supporting wheel body and the supporting wheel shaft, reduce friction, and improve the durability of the equipment.

[0032] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A load-bearing roller for a large excavator, comprising a roller body (1), a roller shaft (2) passing through the roller body (1), and a connecting seat (3) connected to the side of the roller shaft (2), wherein an oil filling groove (11) is provided inside the roller shaft (2), an oil guide groove (12) is provided inside the oil filling groove (11), the connecting seat (3) is connected to the side of the roller shaft (2) through a retaining pin (4), and a wear-resistant layer (18) is provided on the surface of the roller body (1), characterized in that: A first sealing ring (9), a second sealing ring (13) and a floating oil seal (10) are respectively arranged between the supporting wheel body (1) and the supporting wheel shaft (2) from the outside to the inside; a bearing ring (7) is arranged on the supporting wheel shaft (2); a sand blocking cover (8) is arranged on the inner side of the bearing ring (7); the sand blocking cover (8) is provided with an inwardly concave receiving groove (6) on the inner side; a sand removal device (5) is arranged on one side of the supporting wheel shaft (2); a plurality of sand removal blocks (14) are arranged on the inner side of the sand removal device (5); the sand removal blocks (14) are composed of a scraper (15), a baffle (16) and a guide groove (17).

2. A load-bearing large excavator track wheel according to claim 1, characterized in that: The contact surfaces between the track roller body (1) and the track roller shaft (2) are smooth.

3. A load-bearing large excavator track wheel according to claim 2, characterized in that: The wear-resistant layer (18) is made of chromium metal.

4. A load-bearing large excavator track wheel according to claim 3, characterized in that: The first sealing ring (9) is a hydrogenated nitrile rubber sealing ring.

5. The supporting wheel for a large load-bearing excavator according to claim 4, characterized in that: The second sealing ring (13) is a fluorosilicone rubber sealing ring.

6. A load-bearing large excavator track wheel according to claim 5, characterized in that: The containing groove (6) is in the shape of a platform which is larger toward the outside than toward the inside.

7. A load-bearing large excavator track wheel according to claim 6, characterized in that: The sand removal device (5) is in the shape of a platform that is smaller toward the outside than toward the inside.

8. The supporting wheel for a large load-bearing excavator according to claim 7, characterized in that: The sand removal blocks (14) are distributed rotationally symmetrically with the axis of the sand removal device (5) as the center.

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