Hub and bearing integrated grease injection tool

Abstract

A hub and bearing integrated grease injection tool belongs to the technical field of grease injection equipment and comprises a grease guide cylinder, a hub inner cavity grease injection cylinder is fixed at the top end of the grease guide cylinder, a guide handle is arranged at the bottom of the grease guide cylinder, and a bearing grease injection cylinder is rotatably arranged at the bottom end of the grease guide cylinder; a built-in oil chamber A is arranged on the outer wall of the hub inner cavity grease injection cylinder, a built-in guide oil duct is arranged on the outer wall of the grease guide cylinder, and a built-in oil chamber B is arranged on the outer wall of the bearing grease injection cylinder; the outer side of the grease guide cylinder is rotationally sleeved with a grease input cylinder, and a built-in buffer oil chamber is arranged on the outer wall of the grease input cylinder. The hub and bearing integrated grease injection tool is reasonable in design, simple in structure and convenient to install and operate, integration of hub and bearing grease injection is achieved, the grease injection operation efficiency can be improved, the grease injection precision can be improved, the pollution risk of lubricating grease is reduced, and the hub and bearing integrated grease injection tool is suitable for popularization.

Description

Technical Field

[0001] The invention relates to the technical field of grease injection equipment, and in particular to a hub and bearing integrated grease injection tooling. Background Art

[0002] At present, when vehicles are driving, especially in heavy-load, high-speed scenarios, the requirements for bearing lubrication are more stringent. If the lubrication is insufficient or there is no lubrication, it will cause problems such as burning of rotating bearings and shortened life. At the same time, if the wheel hub is not sufficiently lubricated, it will also lead to dangerous situations such as burning of the wheel hub, especially when driving at high speeds, and may even cause casualties.

[0003] In the manufacturing industry, during the vehicle production and assembly process, the outer ring of the bearing is generally pre-pressed onto the wheel hub assembly. At the same time, the bearing and inner ring are first installed on the shaft head, and then the wheel hub assembly with the outer ring of the bearing is assembled onto the shaft head. During this process, grease must be applied to the inner ring of the bearing on the shaft head and the outer ring of the bearing on the inner cavity of the wheel hub.

[0004] At present, conventional grease filling is generally carried out using a grease injection machine. However, in actual operation, the existing grease injection equipment has the following shortcomings: poor flexibility, and is only suitable for filling grease at fixed points on bearings or wheel hubs. After the bearings are filled with grease, they are easily contaminated by impurities during the process of assembling the bearings into the grease bridge assembly, and the grease is at risk of being contaminated. At the same time, during the filling process of the existing grease injection equipment, an air cavity is easily formed between the bearing and the positioning cylinder of the equipment, which makes it easy for the grease to fail to fully fill the bearing gap, especially for the bottom end of the bearing, and the grease injection effect is not ideal. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art that grease can only be injected at fixed points and the grease injection effect is poor, and to provide a wheel hub and bearing integrated grease injection tooling, which has a reasonable design, a simple structure, and is easy to install and operate, and realizes the integration of wheel hub and bearing grease injection, which can not only improve the grease injection operation efficiency, but also improve the grease injection accuracy and reduce the risk of grease contamination, and is suitable for promotion.

[0006] The present invention is achieved through the following technical solutions: A wheel hub and bearing integrated grease injection tool, including a grease guide cylinder, a wheel hub inner cavity grease injection cylinder is fixed to the top of the grease guide cylinder, a plurality of guide handles are arranged at the bottom of the grease guide cylinder, and a bearing grease injection cylinder is rotatably arranged at the bottom end of the grease guide cylinder; a built-in oil chamber A is arranged on the outer wall of the wheel hub inner cavity grease injection cylinder, and a plurality of oil injection holes A301 connected with the built-in oil chamber A are opened on the outer side surface of the wheel hub inner cavity grease injection cylinder; a plurality of built-in guide oil channels are arranged on the outer wall of the grease guide cylinder, the top of the built-in guide oil channel is connected with the built-in oil chamber A, the bottom end of the built-in guide oil channel is connected with an oil inlet hole opened on the outer side surface of the grease guide cylinder, and an oil guide groove is opened on the outer side surface of the grease guide cylinder on one side of each oil inlet hole; a built-in Oil chamber B, the inner side surface of the bearing grease injection cylinder is provided with a plurality of oil injection holes B connected with the built-in oil chamber B, and the bottom end of the oil guide groove is connected with the built-in oil chamber B; a grease input cylinder is rotatably sleeved on the outer side of the grease guide cylinder, and a built-in buffer oil chamber is arranged on the outer wall of the grease input cylinder, a refueling hole A connected with the built-in buffer oil chamber is arranged on the outer side surface of the grease input cylinder, and a plurality of refueling holes B connected with the built-in buffer oil chamber are arranged on the inner side surface of the grease input cylinder; the grease input cylinder is connected with the bearing grease injection cylinder, and the guide handle is movably located in the interval space formed between the grease input cylinder and the bearing grease injection cylinder, and the grease guide cylinder is rotated by the guide handle, so that the oil inlet hole can correspond to the refueling hole B, or the oil guide groove can correspond to the refueling hole B.

[0007] A further improvement of the present invention is that the grease input cylinder includes an outer cylinder and an inner cylinder, and the outer cylinder fixing sleeve is arranged on the outside of the inner cylinder to form a complete grease input cylinder; a built-in buffer oil chamber is formed between the outer cylinder and the inner cylinder, and the refueling hole A is arranged on the outer wall of the outer cylinder, and the refueling hole B is arranged on the outer wall of the inner cylinder.

[0008] A further improvement of the present invention is that a connecting flange is arranged at the top end of the grease guide cylinder, the guide handle is fixed on the outer side of the connecting flange, and the grease input cylinder is pressed against the top side of the connecting flange.

[0009] A further improvement of the present invention is that the outer cylinder, the inner cylinder and the connecting flange are stepped structures corresponding to each other, and the outer cylinder, the inner cylinder and the connecting flange are pressed in sequence from outside to inside.

[0010] A further improvement of the present invention is that oil seals are provided at the connection between the outer cylinder and the inner cylinder, and at the connection between the inner cylinder and the connecting flange, and a bearing is provided between the inner cylinder and the connecting flange.

[0011] A further improvement of the present invention is that the grease input cylinder is connected to the bearing grease injection cylinder through connecting bolts, that is, the outer cylinder body and the inner cylinder body are connected to the bearing grease injection cylinder through connecting bolts.

[0012] A further improvement of the present invention is that at least six built-in guide oil passages are provided and are evenly arranged along the circumference of the grease guide cylinder.

[0013] A further improvement of the present invention is that the outer side surface of the outer cylinder is provided with a mark A and a mark B matching the guide handle; when the guide handle corresponds to the mark A, the oil inlet hole corresponds to the oil filling hole B; when the guide handle corresponds to the mark B, the oil guide groove corresponds to the oil filling hole B.

[0014] A further improvement of the present invention is that the outer side surface of the wheel hub inner cavity grease injection cylinder and the inner side surface of the bearing grease injection cylinder are both conical structures and correspond to each other up and down.

[0015] A further improvement of the present invention is that the wheel hub inner cavity grease injection cylinder has the same taper as the bearing grease injection cylinder, and the tip thereof faces upward.

[0016] The beneficial effects of the present invention are as follows: the design of the grease injection tooling is reasonable, the overall structure is simple, and it is easy to install and operate. The integration of the wheel hub and the bearing grease injection is achieved through the cooperation between the bearing grease injection cylinder, the grease guide cylinder and the wheel hub inner cavity grease injection cylinder, which not only improves the grease injection operation efficiency, but also improves the grease injection accuracy and reduces the risk of grease contamination. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the present invention, the accompanying drawings required for use in the description will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of a specific embodiment of the present invention.

[0019] Figure 2 yes Figure 1 Cross-sectional view of .

[0020] Figure 3 It is a structural schematic diagram of a grease guide cylinder according to a specific embodiment of the present invention.

[0021] Figure 4 It is a schematic structural diagram of a wheel hub inner cavity grease injection cylinder according to a specific embodiment of the present invention.

[0022] Figure 5 It is a structural schematic diagram of a bearing grease injection cylinder according to a specific embodiment of the present invention.

[0023] Figure 6 It is a schematic structural diagram of an outer cylinder according to a specific embodiment of the present invention.

[0024] Figure 7 It is a schematic structural diagram of an inner cylinder according to a specific embodiment of the present invention.

[0025] Figure 8 It is a demonstration diagram of wheel hub grease injection according to a specific embodiment of the present invention.

[0026] Fig. 9 It is a demonstration diagram of grease injection of a tapered roller bearing according to a specific embodiment of the present invention.

[0027] 1. Bearing grease injection cylinder; 101. Oil injection hole B; 2. Outer cylinder; 201. Oil injection hole A; 202. Mark A; 203. Mark B; 3. Wheel hub inner cavity grease injection cylinder; 301. Oil injection hole A; 4. Guide handle; 5. Grease guide cylinder; 501. Built-in guide oil channel; 502. Oil inlet hole; 503. Oil guide groove; 6. Inner cylinder; 601. Oil injection hole B; 7. Bearing; 8. Connecting bolts; 9. Oil seal; 10. Wheel hub assembly; 11. Wheel hub oil baffle; 12. Wheel hub tapered roller bearing outer ring; 13. Wheel hub oil seal; 14. Wheel hub ABS assembly; 15. Tapered roller bearing; 16. Tapered roller bearing inner ring; 17. Wheel hub spacer; 18. Sealing ring; 19. Shaft head assembly. DETAILED DESCRIPTION

[0028] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in this specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0029] Now refer to Figure 1-7 , combined with a specific embodiment, it is explained as follows: the integrated grease injection tooling of a wheel hub and a bearing described in the present invention includes a grease guide cylinder 5, a wheel hub inner cavity grease injection cylinder 3 is fixed to the top of the grease guide cylinder 5, a plurality of guide handles 4 are arranged at the bottom of the grease guide cylinder 5, and a bearing grease injection cylinder 1 is rotatably arranged at the bottom end of the grease guide cylinder 5.

[0030] Specifically, the outer wall of the wheel hub inner cavity grease injection cylinder 3 is provided with a built-in oil chamber A, and the outer side surface of the wheel hub inner cavity grease injection cylinder 3 is provided with a plurality of oil injection holes A301 connected with the built-in oil chamber A, and the outer side surface of the wheel hub inner cavity grease injection cylinder 3 is a conical structure with the tip facing upward.

[0031] Specifically, the outer wall of the grease guide cylinder 5 is provided with at least six built-in guide oil channels 501, and the six built-in guide oil channels 501 are evenly arranged along the circumference of the grease guide cylinder 5; the top of the built-in guide oil channel 501 is connected with the built-in oil chamber A, and the bottom end of the built-in guide oil channel 501 is connected with an oil inlet hole 502 opened on the outer side of the grease guide cylinder 5, and an oil guide groove 503 is opened on the outer side of the grease guide cylinder 5 on one side of each oil inlet hole 502.

[0032] Specifically, the outer wall of the bearing grease cylinder 1 is provided with a built-in oil chamber B, the inner side surface of the bearing grease cylinder 1 is provided with a plurality of oil injection holes B101 connected with the built-in oil chamber B, and the bottom end of the oil guide groove 503 is connected with the built-in oil chamber B; at the same time, the inner side surface of the bearing grease cylinder 1 is a conical structure, the bearing grease cylinder 1 and the wheel hub inner cavity grease cylinder 3 correspond to each other up and down, and the bearing grease cylinder 1 and the wheel hub inner cavity grease cylinder 3 have the same cone angle.

[0033] Specifically, a grease input cylinder is rotatably sleeved on the outer side of the grease guide cylinder 5, a built-in buffer oil chamber is provided on the outer wall of the grease input cylinder, a refueling hole A201 connected to the built-in buffer oil chamber is opened on the outer side surface of the grease input cylinder, and a plurality of refueling holes B601 connected to the built-in buffer oil chamber are opened on the inner side surface of the grease input cylinder; the grease input cylinder is connected to the bearing grease injection cylinder 1, and the guide handle 4 is movably located in the interval space formed between the grease input cylinder and the bearing grease injection cylinder 1, and the grease guide cylinder 5 is rotated by the guide handle 4, so that the oil inlet hole 502 can correspond to the refueling hole B601, or the oil guide groove 503 can correspond to the refueling hole B601.

[0034] The use principle of the present invention: When the wheel hub needs to be greased, refer to Figure 7 The existing wheel hub device includes a wheel hub assembly 10, a wheel hub oil baffle 11, a wheel hub tapered roller bearing outer ring 12, a wheel hub oil seal 13 and a wheel hub ABS assembly 14. The specific structures of the above-mentioned components can refer to the existing technology. The staff inserts the wheel hub inner cavity grease injection cylinder 3 into the wheel hub tapered roller shaft, at which time the outer side surface of the wheel hub inner cavity grease injection cylinder 3 fits with the outer ring 12 of the wheel hub tapered roller bearing; after installation, the staff rotates the grease guide cylinder 5 through the guide handle 4, and makes the oil inlet hole 502 correspond to the refueling hole B601. Through this operation method, the built-in buffer oil chamber, the built-in guide oil channel 501 and the built-in oil chamber A can form a wheel hub inner cavity oil injection channel; after the operation is completed, the staff can carry out the grease injection operation after connecting the external oil delivery equipment through the refueling hole A201, that is, the oil delivery equipment first inputs the grease into the built-in buffer oil chamber through the refueling hole A201, and after the built-in buffer oil chamber is filled, the grease is then input into the built-in oil chamber A through the refueling hole B601, the oil inlet hole 502, and the built-in guide oil channel 501, and after the built-in oil chamber A is filled, it is finally input into the wheel hub inner cavity through the oil injection hole A301.

[0035] When greasing tapered roller bearings is required, refer to Figure 7 The existing tapered roller bearing device includes a tapered roller bearing 15, a tapered roller bearing inner ring 16, a hub spacer 17, a sealing ring 18 and a shaft head assembly 19. The specific structure of each of the above components can refer to the existing technology. The staff matches the bearing grease injection cylinder 1 to the tapered roller bearing 15, and inserts the tooling as a whole on the shaft head assembly 19, so that the bearing grease injection cylinder 1 is sleeved on the tapered roller bearing 15; after the installation is completed, the staff rotates the grease guide cylinder 5 through the guide handle 4, and makes the oil inlet hole 502 correspond to the oil guide groove 503. Through this operation mode, the built-in buffer oil chamber, the oil guide groove 503 and the built-in oil chamber B can form an oil injection channel for the tapered roller bearing; after the operation is completed, the staff can carry out the grease injection operation after connecting the external oil delivery equipment through the filling hole A201, that is, the oil delivery equipment first inputs the grease into the built-in buffer oil chamber through the filling hole A201, and after the built-in buffer oil chamber is filled, the grease is then input into the built-in oil chamber B through the filling hole B601 and the oil guide groove 503, and after the built-in oil chamber B is filled, it is finally input into the tapered roller bearing 15 through the oil injection hole B101.

[0036] In one embodiment, the grease input cylinder includes an outer cylinder 2 and an inner cylinder 6, and the outer cylinder 2 is fixedly sleeved on the outer side of the inner cylinder 6 to form a complete grease input cylinder; a built-in buffer oil chamber is formed between the outer cylinder 2 and the inner cylinder 6, and the oil filling hole A201 is arranged on the outer wall of the outer cylinder 2, and the oil filling hole B601 is arranged on the outer wall of the inner cylinder 6. The above-mentioned grease input cylinder adopts a split structure in which the outer cylinder 2 and the inner cylinder 6 are sleeved, and this structure can reduce the difficulty of assembly and improve the assembly efficiency.

[0037] In one embodiment, a connection flange is provided at the top of the grease guide cylinder 5, the guide handle 4 is fixed on the outer side of the connection flange, and the grease input cylinder is sleeved on the top side of the connection flange; specifically, the outer cylinder 2, the inner cylinder 6 and the connection flange are mutually corresponding step structures, and the outer cylinder 2, the inner cylinder 6 and the connection flange are sequentially sleeved from the outside to the inside. The assembly difficulty can be further reduced by the above mutually matching step structures.

[0038] In one embodiment, an oil seal 9 is provided at the connection between the outer cylinder 2 and the inner cylinder 6, and at the connection between the inner cylinder 6 and the connecting flange, and a bearing 7 is provided between the inner cylinder 6 and the connecting flange. The design of the oil seal 9 can avoid the problem of oil leakage, and the design of the bearing 7 can better rotate the grease guide cylinder 5.

[0039] In one embodiment, the grease input cylinder is connected to the bearing grease injection cylinder 1 through the connecting bolts 8, that is, the outer cylinder 2 and the inner cylinder 6 are connected to the bearing grease injection cylinder 1 through the connecting bolts 8. The bolt connection method is simpler, more convenient and more practical.

[0040] In one embodiment, the outer side surface of the outer cylinder 2 is provided with a mark A202 and a mark B203 that match the guide handle 4; when the guide handle 4 corresponds to the mark A202, the oil inlet hole 502 corresponds to the oil filling hole B601; when the guide handle 4 corresponds to the mark B203, the oil guide groove 503 corresponds to the oil filling hole B601. The design of the mark A202 and the mark B203 can facilitate the staff to switch the oil channel, further improving the efficiency of the oil filling operation.

[0041] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other.

[0042] The terms "upper", "lower", "outer side", "inner side", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish the relative relationship in position if they exist, and do not need to be qualitative. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0043] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hub and bearing integrated grease injection tool, comprising a grease guide cylinder (5), characterized in that: A wheel hub inner cavity grease injection cylinder (3) is fixed to the top of the grease guide cylinder (5), a plurality of guide handles (4) are arranged at the bottom of the grease guide cylinder (5), and a bearing grease injection cylinder (1) is rotatably arranged at the bottom of the grease guide cylinder (5); a built-in oil chamber A is arranged on the outer wall of the wheel hub inner cavity grease injection cylinder (3), and a plurality of oil injection holes A (301) connected to the built-in oil chamber A are opened on the outer side surface of the wheel hub inner cavity grease injection cylinder (3); a plurality of built-in guide oil passages (501) are arranged on the outer wall of the grease guide cylinder (5), the top of the built-in guide oil passages (501) are connected to the built-in oil chamber A, the bottom of the built-in guide oil passages (501) are connected to the oil inlet hole (502) opened on the outer side surface of the grease guide cylinder (5), and an oil guide groove (503) is opened on the outer side surface of the grease guide cylinder (5) on one side of each oil inlet hole (502); a built-in oil chamber B is arranged on the outer wall of the bearing grease injection cylinder (1), and a plurality of guide oil holes A (301) are opened on the outer side surface of the wheel hub inner cavity grease injection cylinder (3); The inner side surface of the cylinder (1) is provided with a plurality of oil filling holes B (101) connected to the built-in oil chamber B, and the bottom end of the oil guide groove (503) is connected to the built-in oil chamber B; a grease input cylinder is rotatably sleeved on the outer side of the grease guide cylinder (5), the outer wall of the grease input cylinder is provided with a built-in buffer oil chamber, the outer side surface of the grease input cylinder is provided with a refueling hole A (201) connected to the built-in buffer oil chamber, and the inner side surface of the grease input cylinder is provided with a plurality of refueling holes B (601) connected to the built-in buffer oil chamber; the grease input cylinder is connected to the bearing grease injection cylinder (1), and the guide handle (4) is movably located in the interval formed between the grease input cylinder and the bearing grease injection cylinder (1), and the grease guide cylinder (5) is rotated by the guide handle (4), so that the oil inlet hole (502) can correspond to the refueling hole B (601), or the oil guide groove (503) can correspond to the refueling hole B (601).

2. The integrated grease injection tool for hub and bearing according to claim 1, characterized in that: The grease input cylinder comprises an outer cylinder (2) and an inner cylinder (6); a fixed sleeve of the outer cylinder (2) is arranged on the outside of the inner cylinder (6), thereby forming a complete grease input cylinder; a built-in buffer oil chamber is formed between the outer cylinder (2) and the inner cylinder (6); a refueling hole A (201) is arranged on the outer wall of the outer cylinder (2), and a refueling hole B (601) is arranged on the outer wall of the inner cylinder (6).

3. The integrated grease injection tool for wheel hub and bearing according to claim 2, characterized in that: A connecting flange is provided at the top end of the grease guide cylinder (5), the guide handle (4) is fixed on the outer side of the connecting flange, and the grease input cylinder sleeve is pressed on the top side of the connecting flange.

4. The integrated grease injection tool for wheel hub and bearing according to claim 3, characterized in that: The outer cylinder (2), the inner cylinder (6) and the connecting flange are stepped structures corresponding to each other, and the outer cylinder (2), the inner cylinder (6) and the connecting flange are pressed in sequence from the outside to the inside.

5. The integrated grease injection tool for hub and bearing according to claim 4, characterized in that: Oil seals (9) are provided at the connection between the outer cylinder (2) and the inner cylinder (6), and at the connection between the inner cylinder (6) and the connecting flange, and a bearing (7) is provided between the inner cylinder (6) and the connecting flange.

6. The integrated grease injection tool for hub and bearing according to claim 5, characterized in that: The grease input cylinder is connected to the bearing grease injection cylinder (1) via a connecting bolt (8), that is, the outer cylinder (2) and the inner cylinder (6) are connected via the connecting bolt (8).

7. The integrated grease injection tool for hub and bearing according to claim 6, characterized in that: At least six built-in guide oil passages (501) are provided and are evenly arranged along the circumference of the grease guide cylinder (5).

8. The integrated grease injection tool for hub and bearing according to claim 7, characterized in that: The outer side surface of the outer cylinder (2) is provided with a mark A (202) and a mark B (203) which match the guide handle (4); when the guide handle (4) corresponds to the mark A (202), the oil inlet hole (502) corresponds to the oil filling hole B (601); when the guide handle (4) corresponds to the mark B (203), the oil guide groove (503) corresponds to the oil filling hole B (601).

9. The integrated grease injection tool for hub and bearing according to claim 1, characterized in that: The outer side surface of the wheel hub inner cavity grease injection cylinder (3) and the inner side surface of the bearing grease injection cylinder (1) are both conical structures and correspond to each other up and down.

10. The integrated grease injection tool for hub and bearing according to claim 9, characterized in that: The wheel hub inner cavity grease injection cylinder (3) has the same taper as the bearing grease injection cylinder (1), and the tip is facing upward.

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