Bulldozer supporting chain wheel with dustproof seal

Abstract

The utility model discloses a bulldozer supporting chain wheel with a dustproof sealing function, which relates to the technical field of excavator accessories and comprises a supporting chain wheel shaft and a supporting chain wheel body, an end cover is arranged on the left side of the supporting chain wheel body and fixedly connected with the supporting chain wheel body through a first bolt, and a connecting plate is arranged on the left side of the supporting chain wheel shaft. The connecting plate is fixedly connected to the supporting chain wheel body through a second bolt, a spiral groove is formed in the side face of the supporting chain wheel shaft, a sealing cover is arranged on the end cover, a neodymium iron boron magnet piece is arranged on the sealing cover, an elastic air bag is connected to the end cover in an embedded mode, thermosensitive ferrite is arranged on the elastic air bag, and a lubricating oil cavity is formed among the supporting chain wheel shaft, the supporting chain wheel body and the end cover. An oil injection hole is formed in the upper end part of the connecting plate and is connected with the end part of the groove body; the carrier chain wheel has the advantages that lubrication between the carrier chain wheel shaft and the carrier chain wheel body is achieved through the neodymium iron boron magnet piece, the elastic air bag, the thermosensitive ferrite, the lubricating oil cavity, the groove body and the oil injection hole, friction force between the carrier chain wheel shaft and the carrier chain wheel body is reduced, and the service life of equipment is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of excavator accessories, and in particular relates to a bulldozer supporting chain wheel with dustproof seal. Background Art

[0002] The carrier wheel is one of the four wheels and one belt of crawler engineering machinery chassis. Its main function is to support the weight of excavators and bulldozers and let the crawler tracks move along the wheels. It is mainly used in various crawler bulldozers, excavators, pavers, milling machines, rotary drilling rigs or other crawler machinery and equipment at home and abroad. The carrier wheel adopts a forged wheel body with high overall strength and long service life. The wheel rim that has been induction hardened will not crack or break even under harsh conditions.

[0003] The prior art has the following deficiencies: the high-speed rotation of the sprocket body and the sprocket shaft in the traditional sprocket causes serious wear between the sprocket body and the sprocket shaft, and the working environment of the sprocket is mostly dusty, so the sprocket needs to be dustproofed.

[0004] Based on this, the utility model designs a bulldozer supporting sprocket with dustproof seal 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 scheme of a novel bulldozer supporting sprocket of the utility model is as follows:

[0007] A bulldozer sprocket with dustproof seal includes a sprocket shaft and a sprocket body, the sprocket body is arranged at one end of the sprocket shaft and the sprocket body is rotatably connected to the sprocket shaft, an end cover is arranged on the left side of the sprocket body, the end cover is fixedly connected to the sprocket body by a first bolt, a connecting plate is arranged on the left side of the sprocket shaft, the connecting plate is fixedly connected to the sprocket body by a second bolt, and is characterized in that a spiral groove is arranged on the side of the sprocket shaft, a sealing cover is arranged on the end cover, a neodymium iron boron magnet sheet is arranged on the sealing cover, an elastic air bag is embedded on the end cover, a thermosensitive ferrite is arranged on the elastic air bag, a lubricating oil cavity is formed between the sprocket shaft, the sprocket body and the end cover, an oil filling hole is arranged on the upper end of the connecting plate, and the oil filling hole is connected to the end of the groove body.

[0008] Furthermore, a sealing ring is arranged on the sealing cover, and the sealing ring is tightly attached to the surrounding of the sealing cover, wherein a fixing column is also arranged on the sealing cover, and the sealing cover and the fixing column are formed integrally.

[0009] Furthermore, the sealing ring is preferably made of fluororubber.

[0010] Furthermore, the elastic airbag is preferably made of polytetrahydrofuran.

[0011] Furthermore, the sealing cover is fixedly connected to the end cover and covers the NdFeB magnet sheet.

[0012] Furthermore, a thermosensitive ferrite is arranged in the middle of the front side of the elastic airbag, and the middle of the front side of the elastic airbag is a relatively thin part.

[0013] The utility model provides a bulldozer supporting sprocket with dustproof seal, which has the following advantages:

[0014] 1. By arranging the NdFeB magnet sheet, the elastic airbag, the thermosensitive ferrite, the lubricating oil cavity, the slot body and the oil filling hole, the lubrication between the sprocket shaft and the sprocket body is realized, the friction between the sprocket shaft and the sprocket body is reduced, and the service life of the equipment is improved.

[0015] 2. A sealing ring is arranged on the sealing cover, and the sealing ring is tightly attached to the surrounding of the sealing cover, so that dust can be prevented from entering the sprocket shaft and the sprocket body, thereby realizing dust-proof protection for the sprocket.

[0016] 3. By arranging a fixing column on the sealing cover, the sealing cover and the fixing column are formed as one body, which can facilitate installation by the installer. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the tank structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the sealing cover structure of the utility model;

[0020] Figure numerals: 1. sprocket shaft; 2. sprocket body; 3. end cover; 4. sealing cover; 5. sealing ring; 6. fixing column; 7. NdFeB magnet sheet; 8. thermistor ferrite; 9. elastic airbag; 10. lubricating oil cavity; 11. first bolt; 12. connecting plate; 13. second bolt; 14. trough body; 15. oil filling hole. DETAILED DESCRIPTION

[0021] 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.

[0022] In order to better understand the purpose, structure and function of the utility model, the following is a further detailed description of a bulldozer supporting sprocket with dustproof seal of the utility model in conjunction with the accompanying drawings.

[0023] like Figure 1-3 The bulldozer sprocket with dustproof seal comprises a sprocket shaft 1 and a sprocket body 2, wherein the sprocket body 2 is arranged at one end of the sprocket shaft 1 and the axes of the sprocket shaft 1 and the sprocket body 2 coincide, wherein the sprocket body 2 is rotatably connected to the sprocket shaft 1, a groove body 14 is arranged on the side of the sprocket shaft 1, the groove body 14 is spirally used for transporting lubricating oil, one end of the groove body 14 is connected to the end of the sprocket shaft 1, an end cover 3 is arranged on the left side of the sprocket body 2, the end cover 3 is fixedly connected to the sprocket body 2 by a first bolt 11, a sealing cover 4 is arranged on the end cover 3, a neodymium iron boron magnet sheet 7 is arranged on the sealing cover 4, and the sealing cover 4 is fixed to the end cover 3 The connection and sealing cover 4 cover the NdFeB magnet sheet 7, wherein an elastic airbag 9 is also arranged on the end cover 3, and the back of the elastic airbag 9 is embedded in the end cover 3, and a thermistor ferrite 8 is arranged in the middle of the front of the elastic airbag 9. The middle of the front of the elastic airbag 9 is a relatively thin part, and the thermistor ferrite 8 is arranged in the position to better squeeze the elastic airbag 9, wherein a lubricating oil cavity 10 is formed between the sprocket shaft 1, the sprocket body 2 and the end cover 3, and the lubricating oil cavity 10 is used to hold lubricating oil, and the lubricating oil is transported to the space between the sprocket shaft 1 and the sprocket body 2 through the groove body 14 for lubrication, thereby reducing friction and improving the service life of the equipment.

[0024] In the utility model, a bulldozer sprocket with dustproof seal is provided, the inner cavity of the elastic airbag 9 is filled with gas, the elastic airbag 9 is preferably made of polytetrahydrofuran material, the polytetrahydrofuran material has good flexibility and resilience, a thermistor ferrite 8 is arranged in the middle part of the front side of the elastic airbag 9, so that the thermistor ferrite 8 can more easily squeeze the elastic airbag 9, wherein the thermistor ferrite 8 has a Curie temperature, when the temperature reaches 40°C, the thermistor ferrite 8 will not be magnetic, so when the temperature in the sprocket reaches 40°C, the suction between the thermistor ferrite 8 and the neodymium iron boron magnet sheet 7 disappears, so that the elastic airbag 9 returns to its original state.

[0025] In the utility model, a bulldozer sprocket with dustproof seal is provided, and a sealing ring 5 is arranged on the sealing cover 4. The sealing ring 5 is preferably made of fluororubber, which has good high temperature resistance and corrosion resistance. The fluororubber sealing ring 5 is pasted on the periphery of the sealing cover 4 and the fluororubber sealing ring 5 is squeezed so that the fluororubber sealing ring 5 contacts and fits tightly with both sides of the sealing cover 4 respectively, preventing dust from entering the sprocket shaft 1 and the sprocket body 2, thereby realizing dustproof protection for the sprocket.

[0026] In the utility model, a bulldozer sprocket with dustproof seal is provided, and a connecting plate 12 is also provided on the left side of the sprocket shaft 1, and the connecting plate 12 is fixedly connected to the sprocket body 2 by a second bolt 13, wherein an oil filling hole 15 is also provided on the upper end of the connecting plate 12, and the oil filling hole 15 is connected to the end of the trough body 14, wherein a fixing column 6 is also provided on the sealing cover 4, and the fixing column 6 and the sealing cover 4 are integrally formed, which can be convenient for the installer to install.

[0027] The working principle of the utility model is as follows: a bulldozer sprocket with dustproof seal, when the sprocket shaft 1 and the sprocket body 2 rotate, the temperature in the sprocket will quickly reach 40°C, at which time the thermistor ferrite 8 loses its magnetism, the thermistor ferrite 8 will lose its attraction with the NdFeB magnet sheet 7, the elastic airbag 9 returns to its original state, at which time the lubricating oil pressure in the lubricating oil cavity 10 is applied, so that the lubricating oil enters the tank body 14 through the oil filling hole 15, and finally the lubricating oil is provided between the sprocket shaft 1 and the sprocket body 2, the friction between the sprocket shaft 1 and the sprocket body 2 is reduced, and the service life of the equipment is improved; at the same time, a sealing ring 5 is also arranged on the sealing cover 4, the sealing ring 5 is tightly attached to the sealing cover 4, dust can be prevented from entering the sprocket shaft 1 and the sprocket body 2, and dustproof protection for the sprocket is realized, wherein the sealing cover and the fixing column 6 are integrally formed, which can be convenient for the installer to install.

[0028] 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 bulldozer sprocket with dustproof seal, comprising a sprocket shaft (1) and a sprocket body (2), wherein the sprocket body (2) is arranged at one end of the sprocket shaft (1) and the sprocket body (2) is rotatably connected to the sprocket shaft (1), an end cover (3) is arranged on the left side of the sprocket body (2), the end cover (3) is fixedly connected to the sprocket body (2) by a first bolt (11), a connecting plate (12) is arranged on the left side of the sprocket shaft (1), and the connecting plate (12) is fixedly connected to the sprocket body (2) by a second bolt (13), characterized in that: A spiral groove body (14) is arranged on the side of the sprocket wheel shaft (1), a sealing cover (4) is arranged on the end cover (3), a neodymium iron boron magnet sheet (7) is arranged on the sealing cover (4), an elastic air bag (9) is embedded on the end cover (3), a thermosensitive ferrite (8) is arranged on the elastic air bag (9), a lubricating oil cavity (10) is formed between the sprocket wheel shaft (1), the sprocket wheel body (2) and the end cover (3), an oil injection hole (15) is arranged on the upper end of the connecting plate (12), and the oil injection hole (15) is connected to the end of the groove body (14).

2. The bulldozer carrier sprocket with dustproof seal according to claim 1, characterized in that: The sealing cover (4) is provided with a sealing ring (5), which is tightly attached to the surrounding of the sealing cover (4), wherein a fixing column (6) is also provided on the sealing cover (4), and the sealing cover (4) and the fixing column (6) are integrally formed.

3. The bulldozer carrier sprocket with dustproof seal according to claim 2, characterized in that: The sealing ring (5) is made of fluororubber.

4. The bulldozer carrier sprocket with dustproof seal according to claim 3, characterized in that: The elastic airbag (9) is made of polytetrahydrofuran.

5. The bulldozer carrier sprocket with dustproof seal according to claim 4, characterized in that: The sealing cover (4) is fixedly connected to the end cover (3) and the sealing cover (4) covers the NdFeB magnet sheet (7).

6. The bulldozer carrier sprocket with dustproof seal according to claim 5, characterized in that: A thermosensitive ferrite (8) is arranged in the middle of the front side of the elastic airbag (9), and the middle of the front side of the elastic airbag (9) is a relatively thin part.

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