A hub oil seal assembly tool

Abstract

The utility model discloses a kind of hub oil seal assembly tool and assembly method, tool includes workbench being provided with through-hole, press mounting mechanism and press mounting power piece, press mounting mechanism includes inner oil seal press head and outer oil seal press head at through-hole, and inner oil seal press head and outer oil seal press head are oppositely arranged, inner oil seal press head and outer oil seal press head are connected with press mounting power piece, under the driving of press mounting power piece, inner oil seal press head and outer oil seal press head can all move up and down, and outer oil seal press head can pass through through-hole in the process of moving up and down. Inner bearing and outer bearing are provided on hub, use the hub oil seal assembly tool of the utility model to install inner oil seal on inner bearing, install outer oil seal on outer bearing, can improve the sealing property of inner oil seal and outer oil seal installation, effectively avoid the leakage of lubricating grease in the process of hub use, improve the reliability of hub use, further guarantee the reliability of vehicle use, improve the safety factor of vehicle use.

Description

Technical Field

[0001] This utility model belongs to the field of automotive parts technology, and in particular relates to a wheel hub oil seal tooling. Background Technology

[0002] The automotive wheel assembly is a major component of the vehicle's control system, comprising wheel bearings, the wheel hub, brake discs, and wheel oil seals. Wheel bearings, based on their assembly position, are designated as inner and outer bearings. Both are tapered roller bearings, consisting of an inner ring and an outer ring; the wheel hub and the outer ring of the bearing are fitted together with an interference fit. As a rotating connecting component, the assembly quality of the wheel bearing directly affects its wear condition. If the bearing is misaligned, it will cause wear and failure, severely impacting its service life. The wheel oil seal's function is to seal the bearing; the wheel hub and the wheel oil seal are also fitted together with an interference fit.

[0003] Currently, there is another type of wheel hub and bearing unit assembly on the market. The bearing unit includes an inner bearing and an outer bearing, which are installed on the wheel hub. In existing technology, operators rely entirely on their bare hands to install the inner oil seal onto the inner bearing and the outer oil seal onto the outer bearing. The result of manual installation by operators is often that the inner and outer oil seals are not installed properly, leading to poor sealing. This causes the lubricating grease to fail and leak during the use of the wheel hub, affecting the reliability of the wheel hub and further affecting the reliability of the vehicle, thus reducing the safety factor of the vehicle. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a wheel hub oil seal assembly tooling, which assembles the inner oil seal and the outer oil seal onto the inner bearing and the outer bearing of the wheel hub respectively, thereby improving the sealing performance of the inner and outer oil seals, effectively preventing the leakage of lubricating grease during wheel hub use, improving the reliability of wheel hub use, further ensuring the reliability of vehicle use, and improving the safety factor of vehicle use.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0006] A wheel hub oil seal assembly fixture is disclosed. An inner bearing and an outer bearing are provided on the wheel hub. The fixture is used to install the inner oil seal onto the inner bearing and the outer oil seal onto the outer bearing. The fixture includes a worktable, a pressing mechanism, and a pressing power component. The worktable has a through hole. The pressing mechanism includes an inner oil seal press head and an outer oil seal press head, located at the through hole and positioned vertically opposite each other. Both the inner and outer oil seal press heads are connected to the pressing power component. Under the drive of the pressing power component, both the inner and outer oil seal press heads can move vertically, and the outer oil seal press head can pass through the through hole during vertical movement.

[0007] Furthermore, the inner oil seal head is connected to the pressing power component via an inner oil seal head connector.

[0008] Furthermore, the external oil seal head is connected to the press-fitting power component via an external oil seal head connector.

[0009] Furthermore, a hub positioning plate is detachably and fixedly installed on the upper surface of the workbench. The hub positioning plate has an L-shaped structure and includes a horizontal part and a vertical part connected together. The horizontal part is detachably and fixedly connected to the workbench, and the vertical part positions the hub.

[0010] Furthermore, the inner oil seal press head includes an inner oil seal press head guide, an inner oil seal flange pressing part, and an inner oil seal inner skeleton pressing part.

[0011] Furthermore, the inner oil seal inner skeleton pressing part is a downward protrusion, and the inner oil seal flange pressing part is located outside the inner oil seal inner skeleton pressing part; when pressing the inner oil seal, the inner oil seal flange pressing part presses the inner oil seal flange of the inner oil seal, and the inner oil seal inner skeleton pressing part presses the inner skeleton of the inner oil seal.

[0012] Furthermore, the external oil seal pressure head includes an external oil seal pressure head guide portion, an external oil seal pressure head hub contact portion, and an external oil seal pressing portion.

[0013] Furthermore, the outer oil seal pressure head has an upwardly protruding boss, which includes the outer oil seal pressing part and the top of the boss. The outer oil seal pressing part is located outside the top of the boss, and the height of the top of the boss is higher than that of the outer oil seal pressing part. When pressing the outer oil seal, the outer oil seal pressing part presses the outer oil seal, and there is a gap between the top of the boss and the outer oil seal. The hub contact part of the outer oil seal pressure head contacts the hub.

[0014] Furthermore, the outer circumferential surface of the inner oil seal head is provided with an inner oil seal head groove, and the bottom of the inner oil seal head groove is provided with a plurality of inner oil seal head connection holes at intervals.

[0015] Furthermore, the outer peripheral surface of the outer oil seal head is provided with an outer oil seal head groove, and the bottom of the groove is provided with a plurality of outer oil seal head connection holes at intervals.

[0016] Due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0017] This utility model discloses a wheel hub oil seal assembly fixture, comprising a worktable, a pressing mechanism, and a pressing power component. The worktable has a through hole. The pressing mechanism includes an inner oil seal head and an outer oil seal head, located at the through hole and positioned vertically opposite each other. Both the inner and outer oil seal heads are connected to the pressing power component, allowing them to move vertically under its influence. The outer oil seal head can pass through the through hole during this vertical movement. The wheel hub has an inner bearing and an outer bearing. Using this wheel hub oil seal assembly fixture to install the inner oil seal on the inner bearing and the outer oil seal on the outer bearing improves the sealing performance of the inner and outer oil seals, effectively preventing lubricant leakage during wheel hub use, improving wheel hub reliability, further ensuring vehicle reliability, and enhancing vehicle safety. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the wheel hub oil seal assembly tooling of this utility model;

[0019] Figure 2 yes Figure 1 Top view;

[0020] Figure 3 yes Figure 2 Sectional view of plane AA;

[0021] Figure 4 yes Figure 1 Enlarged structural schematic diagram of the middle hub, inner oil seal pressure head, and outer oil seal pressure head;

[0022] Figure 5 yes Figure 4 Sectional view along the BB direction;

[0023] Figure 6 yes Figure 5 A magnified view of a portion of region C in the middle;

[0024] Figure 7 yes Figure 5 A magnified view of a portion of region D in the middle;

[0025] Figure 8 yes Figure 5 Enlarged structural schematic diagram of the inner oil seal pressure head;

[0026] Figure 9 yes Figure 5 Enlarged structural schematic diagram of the inner and outer oil seal pressure head;

[0027] In the diagram, 1. Hub; 21. Inner bearing; 22. Outer bearing; 3. Inner oil seal; 4. Outer oil seal; 5. Outer oil seal pressure head; 51. Outer oil seal pressure head groove; 52. Outer oil seal pressure head guide; 53. Outer oil seal pressure head hub contact; 54. Outer oil seal press-fit; 55. Boss top; 6. Inner oil seal pressure head; 61. Inner oil seal pressure head groove; 62. Inner oil seal pressure head guide; 63. Inner oil seal flange press-fit; 64. Inner oil seal inner skeleton press-fit; 7. Outer oil seal pressure head connector; 8. Inner oil seal pressure head connector; 9. Hub positioning plate; 10. Bolt; 11. Workbench; 121. Screw A; 122. Screw B. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] Combination Figure 1 , Figure 2 , Figure 3 , Figure 4 ,as well as Figure 5 As shown, the hub 1 is provided with an inner bearing 21 and an outer bearing 22. The hub oil seal assembly tool of this utility model is used to install the inner oil seal 3 on the inner bearing 21 and the outer oil seal 4 on the outer bearing 22.

[0030] The wheel hub oil seal assembly fixture includes a worktable 11, a pressing mechanism, and a pressing power component (not shown in the figure). A through hole is provided on the worktable 11. The pressing mechanism includes an inner oil seal head 6 and an outer oil seal head 5, located at the through hole and arranged vertically opposite each other. Both the inner and outer oil seal heads 6 and 5 are connected to the pressing power component. Driven by the pressing power component, both the inner and outer oil seal heads 6 and 5 can move vertically, and the outer oil seal head 5 can pass through the through hole during its vertical movement.

[0031] Preferably, the pressing power component is a hydraulic press (not shown in the figure). The hydraulic press is an externally purchased component. The structure, working principle, and working process of the hydraulic press are common knowledge to those skilled in the art, and will not be described in detail here.

[0032] Preferably, the inner oil seal head 6 is connected to the pressing power component via the inner oil seal head connector 8; the outer oil seal head 5 is connected to the pressing power component via the outer oil seal head connector 7.

[0033] Preferably, a hub positioning plate 9 is detachably and fixedly installed on the upper surface of the workbench 11. The hub positioning plate 9 has an L-shaped structure and includes a horizontal part and a vertical part connected together. The horizontal part is detachably and fixedly connected to the workbench 11, and the vertical part positions the hub 1.

[0034] Preferably, both the horizontal and vertical parts of the hub positioning plate 9 are arc-shaped structures.

[0035] A slotted hole is provided on the horizontal part of the wheel hub positioning plate 9, which can be used to adjust the position of the wheel hub positioning plate 9 on the worktable 11, so as to more accurately position the wheel hub 1. After adjusting the position of the wheel hub positioning plate 9, the wheel hub positioning plate 9 is fixedly connected to the worktable 11 using bolts 10.

[0036] Combination Figure 1 , Figure 4 , Figure 5 , Figure 7 ,as well as Figure 8 As shown in the figure, the inner oil seal press head 6 includes an inner oil seal press head guide part 62, an inner oil seal flange pressing part 63, and an inner oil seal inner skeleton pressing part 64.

[0037] Preferably, the inner oil seal inner skeleton press-fit part 64 is a downward protrusion, and the inner oil seal flange press-fit part 63 is located outside the inner oil seal inner skeleton press-fit part 64.

[0038] Preferably, an inner oil seal head groove 61 is provided circumferentially on the outer peripheral surface of the inner oil seal head 6, and a plurality of inner oil seal head connecting holes are provided at intervals at the bottom of the groove of the inner oil seal head groove 61. The inner oil seal head 6 and the inner oil seal head connector 8 are fixedly connected together by screws A 121.

[0039] Combination Figure 1 , Figure 4 , Figure 5 , Figure 6 ,as well as Figure 9 As shown, the external oil seal pressure head 5 includes an external oil seal pressure head guide part 52, an external oil seal pressure head hub contact part 53, and an external oil seal pressing part 54.

[0040] Preferably, the outer oil seal head 5 has an upward protrusion with a boss, the boss including an outer oil seal pressing part 54 and a boss top 55, the outer oil seal pressing part 54 is located outside the boss top 55, and the height of the boss top 55 is higher than that of the outer oil seal pressing part 54.

[0041] Preferably, the outer peripheral surface of the outer oil seal head 5 is provided with an outer oil seal head groove 51, and the bottom of the outer oil seal head groove 51 is provided with a plurality of outer oil seal head connecting holes at intervals. The outer oil seal head 5 and the outer oil seal head connector 7 are fixedly connected together by screws B 122.

[0042] The process of installing the inner oil seal 3 and the outer oil seal 4 onto the inner bearing 21 and the outer bearing 22 of the wheel hub 1 using the wheel hub oil seal fixture of this utility model is described in detail below:

[0043] S1. Before assembly, adjust the hydraulic press to ensure that the inner oil seal head connector 8 and the outer oil seal head connector 7 are aligned.

[0044] S2. Install the inner oil seal head 6 onto the inner oil seal head connector 8 and secure it with screw A 121; install the outer oil seal head 5 onto the outer oil seal head connector 7 and secure it with screw B 122; adjust the depth of screw A 121 and screw B 122 into the inner oil seal head groove 61 and the outer oil seal head groove 51 respectively to align the inner oil seal head 6 and the outer oil seal head 5.

[0045] S3. Place the hub 1 with inner bearing 21 and outer bearing 22 on the workbench 11, place the outer oil seal 4 on the outer oil seal pressure head 5, and place the inner oil seal 3 on the inner oil seal pressure head 6. When pressing the first hub 1, adjust the position of the hub 1 so that the inner oil seal pressure head guide part 62 of the inner oil seal pressure head 6 is aligned with the bearing hole of the inner bearing 21. Then, under the action of the hydraulic press, press down the inner oil seal pressure head 6 so that the inner oil seal 3 is pressed into place. The inner oil seal flange pressing part 63 presses the inner oil seal flange of the inner oil seal 3, and the inner oil seal inner skeleton pressing part 64 presses the inner skeleton of the inner oil seal 3.

[0046] S4. Keep the inner oil seal 3 in the press-fit state, align the outer oil seal head guide 52 of the outer oil seal head 5 with the bearing hole of the outer bearing 22, and under the action of the hydraulic press, push out the outer oil seal head 5 to press the outer oil seal 4 into place. The outer oil seal press-fit part 54 presses the outer oil seal 4. There is a gap between the top 55 of the boss and the outer oil seal 4. The hub contact part 53 of the outer oil seal head contacts the hub 1. There is a gap between the top 55 of the boss and the outer oil seal 4 to ensure the form and position tolerance requirements.

[0047] S5. Keep the inner oil seal 3 and the outer oil seal 4 in the press-fit state, adjust the position of the wheel hub positioning plate 9, confirm the position of the wheel hub positioning plate 9 by making the wheel hub positioning plate 9 contact the outer side of the flange of the wheel hub 1, and tighten the wheel hub positioning plate 9 with bolts 10.

[0048] When pressing the subsequent hub 1, the position of the hub positioning plate 9 remains unchanged. Place the hub 1 on the worktable, push the hub 1 so that the outer side of the flange of the hub 1 contacts the hub positioning plate 9, and then press the inner oil seal 3 and the outer oil seal 4.

[0049] The technical features with serial numbers mentioned in this manual (such as screw A, screw B, etc.) are only for distinguishing the technical features and do not represent the positional relationship, installation sequence, or working sequence of the technical features.

[0050] In the description of this specification, it should be understood that the orientation or positional relationship described by terms such as "inner bearing," "outer bearing," "inner oil seal," "outer oil seal," "outer oil seal pressure head," "outer oil seal pressure head groove," "outer oil seal pressure head guide," "outer oil seal pressure head hub contact," "outer oil seal pressing part," "inner oil seal pressure head," "inner oil seal pressure head groove," "inner oil seal pressure head guide," "inner oil seal flange pressing part," "inner oil seal inner skeleton pressing part," "outer oil seal pressure head connector," "inner oil seal pressure head connector," "upper surface," and "outer side" are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0051] While specific embodiments of this utility model have been described above, those skilled in the art should understand that the described embodiments are merely some, not all, embodiments of this utility model. These are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model and without any inventive effort, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A wheel hub oil seal assembly fixture, wherein an inner bearing and an outer bearing are provided on the wheel hub, and the inner oil seal is installed on the inner bearing and the outer oil seal is installed on the outer bearing using the wheel hub oil seal assembly fixture; characterized in that, The wheel hub oil seal assembly fixture includes a worktable, a pressing mechanism, and a pressing power component. The worktable is provided with a through hole. The pressing mechanism includes an inner oil seal head and an outer oil seal head, which are located at the through hole and are arranged vertically opposite each other. Both the inner and outer oil seal heads are connected to the pressing power component. Under the drive of the pressing power component, both the inner and outer oil seal heads can move up and down, and the outer oil seal head can pass through the through hole during the up and down movement.

2. The wheel hub oil seal assembly tooling as described in claim 1, characterized in that, The inner oil seal head is connected to the pressing power component via an inner oil seal head connector.

3. The wheel hub oil seal assembly tooling as described in claim 1, characterized in that, The external oil seal head is connected to the press-fitting power component via an external oil seal head connector.

4. The wheel hub oil seal assembly tooling as described in claim 1, characterized in that, A hub positioning plate is detachably and fixedly installed on the upper surface of the workbench. The hub positioning plate has an L-shaped structure and includes a horizontal part and a vertical part connected together. The horizontal part is detachably and fixedly connected to the workbench, and the vertical part positions the hub.

5. The wheel hub oil seal assembly tooling as described in claim 1, characterized in that, The inner oil seal pressure head includes an inner oil seal pressure head guide, an inner oil seal flange pressing part, and an inner oil seal inner skeleton pressing part.

6. The wheel hub oil seal assembly tooling as described in claim 5, characterized in that, The inner oil seal inner skeleton pressing part is a downward protrusion, and the inner oil seal flange pressing part is located outside the inner oil seal inner skeleton pressing part; when pressing the inner oil seal, the inner oil seal flange pressing part presses the inner oil seal flange of the inner oil seal, and the inner oil seal inner skeleton pressing part presses the inner skeleton of the inner oil seal.

7. The wheel hub oil seal assembly tooling as described in claim 1, characterized in that, The external oil seal pressure head includes an external oil seal pressure head guide part, an external oil seal pressure head hub contact part, and an external oil seal pressing part.

8. The wheel hub oil seal assembly tooling as described in claim 7, characterized in that, The outer oil seal pressure head has an upwardly protruding boss, which includes the outer oil seal pressing part and the top of the boss. The outer oil seal pressing part is located outside the top of the boss, and the height of the top of the boss is higher than that of the outer oil seal pressing part. When pressing the outer oil seal, the outer oil seal pressing part presses the outer oil seal, and there is a gap between the top of the boss and the outer oil seal. The hub contact part of the outer oil seal pressure head contacts the hub.

9. The wheel hub oil seal assembly tooling as described in claim 1, characterized in that, The outer circumferential surface of the inner oil seal head is provided with an inner oil seal head groove, and the bottom of the inner oil seal head groove is provided with a plurality of inner oil seal head connection holes at intervals.

10. The wheel hub oil seal assembly tooling as described in claim 1, characterized in that, The outer circumferential surface of the outer oil seal head is provided with an outer oil seal head groove, and the bottom of the groove is provided with a plurality of outer oil seal head connection holes at intervals.

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