Hub bearing oil seal press fitting device

Abstract

The utility model discloses a hub bearing oil seal press-fitting device and belongs to the field of machine manufacturing. The positioning guide seat and the first hub bearing inner ring are tightly matched and fixed through a spigot and an end face, the positioning fixing seat and the second hub bearing inner ring are tightly matched and fixed through a spigot and an end face, the positioning guide seat and the positioning fixing seat are tightened and fastened together through the compression bolt, and the outer diameter of an inner ring of the annular gland is in sliding fit with an inner hole of the positioning guide seat. The outer ring end face of the annular gland is tightly matched with the end face of the hub bearing oil seal, and a press pushes the hub bearing oil seal to the installation position of the hub bearing through the annular gland via the conical guide face at the upper end of the outer circle on the positioning guide seat. According to the utility model, the rubber lip of the hub bearing oil seal can be prevented from being extruded, deformed and damaged due to deflection of the hub bearing oil seal in the press fitting process, and meanwhile, the lip can be ensured to be uniformly stressed and prevented from being impacted and scratched in the pressing process of the oil seal, so that the mounting reliability of the hub bearing oil seal is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical manufacturing, in particular to a wheel hub bearing oil seal press-fitting device. Background Art

[0002] At present, when installing the wheel hub bearing oil seal, the operator first manually places the wheel hub bearing oil seal on the press and levels it, and then presses the wheel hub bearing oil seal into the outer ring of the wheel hub bearing by means of the press to assist in pushing the pad. However, during the pressing process, due to factors such as uneven manual placement and lack of limit guide, the wheel hub bearing oil seal is subjected to uneven force, which will cause the wheel hub bearing oil seal to tilt, causing its lip to be squeezed and deformed, causing the lip of the wheel hub bearing oil seal to lose its sealing function, resulting in oil leakage during the operation of the wheel hub bearing. In severe cases, the wheel hub bearing will be damaged due to poor lubrication of the wheel hub bearing. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the invention object of the utility model is to provide a wheel hub bearing oil seal press-fitting device to prevent the oil seal from tilting during installation and from being squeezed, deformed and damaged due to uneven force.

[0004] To achieve the above-mentioned purpose of the invention, the positioning guide seat of the utility model is fixed to the inner ring of the hub bearing one by tightly fitting with the stopper and the end face, the positioning fixing seat is fixed to the inner ring of the hub bearing two by tightly fitting with the stopper and the end face, the clamping bolt tightens the positioning guide seat and the positioning fixing seat together, the outer diameter of the inner ring of the annular pressure cover is slidably matched with the inner hole of the positioning guide seat, the outer ring end face of the annular pressure cover is tightly matched with the end face of the hub bearing oil seal, and the press pushes the hub bearing oil seal to the installation position of the hub bearing through the outer circle upper end conical guide surface on the positioning guide seat through the annular pressure cover.

[0005] Furthermore, the conical guide surface on the upper end of the outer circle of the positioning guide seat is a conical guide surface composed of multiple sections with different tapers, and the transition between the lower oil seal mounting surface and the end face is designed with a flange angle that can wrap the chamfer of one end face of the inner ring of the hub bearing, and the inclination of the flange angle is 15-45 degrees and the height is 1-3mm.

[0006] Furthermore, the upper end surface of the annular pressure cover is provided with a plurality of evenly distributed weight-reducing exhaust holes that have both exhaust and weight-reducing functions, and the outer circle is provided with handles that are convenient for transportation, handling, and loading and unloading.

[0007] Furthermore, a first tapered roller with a retainer is installed between the outer ring of the hub bearing and the first inner ring of the hub bearing, and a second tapered roller with a retainer is installed between the outer ring of the hub bearing and the second inner ring of the hub bearing.

[0008] Furthermore, an adjustment pad is installed between the first inner ring of the wheel hub bearing and the second inner ring of the wheel hub bearing.

[0009] Compared with the prior art, the utility model can avoid the damage of the rubber lip of the hub bearing oil seal due to the sway of the hub bearing oil seal during the press-fitting process, and can ensure that the lip of the oil seal is evenly stressed during the pressing process to avoid impact scratches, thereby ensuring the reliability of the installation of the hub bearing oil seal. The utility model is widely used in the press-fitting of hub bearing oil seals in metallurgy, petroleum machinery and special vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural diagram of the utility model.

[0011] Figure 2 yes Figure 1 A schematic diagram of the structure of the positioning guide seat.

[0012] Figure 3 Figure 2 Enlarged view of K.

[0013] Figure 4 yes Figure 1 Schematic diagram of the structure of the annular gland.

[0014] In the figure: 1. outer ring of wheel hub bearing; 2. tapered roller one; 3. inner ring of wheel hub bearing one; 4. positioning guide seat; 5. annular pressure cover; 6. clamping bolt; 7. positioning fixing seat; 8. inner ring of wheel hub bearing two; 9. adjustment pad; 10. oil seal of wheel hub bearing; 11. tapered roller two; 12. flanged corner; 13. weight-reducing vent hole; 14. handle; 15. installation position of wheel hub bearing; M, tapered guide surface at the upper end of the outer circle; N, oil seal installation surface at the lower end; P, end face. DETAILED DESCRIPTION

[0015] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a tapered roller 2 with a retainer is installed between the hub bearing outer ring 1 and the hub bearing inner ring 3 of the hub bearing of the utility model, a tapered roller 11 with a retainer is installed between the hub bearing outer ring 1 and the hub bearing inner ring 8, and an adjustment pad 9 is installed between the hub bearing inner ring 3 and the hub bearing inner ring 8.

[0016] The positioning guide seat 4 is fixed to the inner ring 1 3 of the hub bearing through a tight fit between the stopper and the end face, the positioning fixing seat 7 is fixed to the inner ring 2 8 of the hub bearing through a tight fit between the stopper and the end face, the clamping bolt 6 tightens the positioning guide seat 4 and the positioning fixing seat 7 together, the inner ring outer diameter of the annular pressure cover 5 is slidably matched with the inner hole of the positioning guide seat 4, the outer ring end face of the annular pressure cover 5 is tightly matched with the end face of the hub bearing oil seal 10, and the press pushes the hub bearing oil seal 10 through the outer circle upper end conical guide surface M on the positioning guide seat 4 to the installation position 15 of the hub bearing through the annular pressure cover 5.

[0017] The outer circle upper end conical guide surface M of the positioning guide seat 4 is a conical guide surface composed of multiple sections with different tapers. The transition between the lower end oil seal mounting surface N and the end surface P is designed with a micro-flange 12 that can wrap the chamfer of the end surface of the inner ring of the hub bearing. The slope of the flange 12 is 15-45 degrees and the height is 1-3mm. When the hub bearing oil seal 10 slides from the positioning guide seat 4 into the installation position 15 of the hub bearing, due to the transitional guiding effect of the flange 12, it can be ensured that the rubber lip of the hub bearing oil seal 10 is not scratched.

[0018] The upper end surface of the annular gland 5 is provided with a plurality of evenly distributed exhaust holes 13 for exhausting and reducing weight, and the outer circle is provided with a handle 14 for facilitating transportation, handling and loading and unloading, so that the entire installation device can be easily operated.

[0019] When in use, the wheel hub bearing oil seal installation device is installed on the operating table of the press, and the wheel hub bearing oil seal 10 is slid along the outer circle upper end conical guide surface M on the positioning guide seat 4 to the lower end oil seal installation surface N, and the press head pushes the wheel hub bearing oil seal 10 into the installation position 15 of the wheel hub bearing between the wheel hub bearing outer ring 1 and the wheel hub bearing inner ring 1 3 through the annular gland 5. Since the positioning guide seat 4 and the positioning fixing seat 7 tightly tighten the wheel hub bearing inner ring 1 3 and the wheel hub bearing inner ring 2 8, the positioning guide seat 4 and the positioning fixing seat 7 and the wheel hub bearing inner ring 1 3 are stably supported, which can ensure that the wheel hub bearing oil seal 10 will not swing or tilt during the process of the annular gland 5 pushing the wheel hub bearing oil seal 10 downward, and thus the rubber lip of the wheel hub bearing oil seal 10 will not be damaged due to extrusion deformation.

Claims

1. A wheel hub bearing oil seal press-fitting device, characterized in that: The positioning guide seat (4) is fixed to the inner ring 1 (3) of the hub bearing by means of a stopper and an end face, the positioning fixing seat (7) is fixed to the inner ring 2 (8) of the hub bearing by means of a stopper and an end face, the clamping bolt (6) tightens the positioning guide seat (4) and the positioning fixing seat (7) together, the inner ring outer diameter of the annular pressure cover (5) is slidably matched with the inner hole of the positioning guide seat (4), the outer ring end face of the annular pressure cover (5) is tightly matched with the end face of the hub bearing oil seal (10), and the press machine pushes the hub bearing oil seal (10) through the outer circle upper end conical guide surface (M) on the positioning guide seat (4) to the installation position (15) of the hub bearing through the annular pressure cover (5).

2. The wheel hub bearing oil seal press-fitting device according to claim 1, characterized in that: The outer circular upper end conical guide surface (M) of the positioning guide seat (4) is a conical guide surface composed of multiple sections with different tapers. The transition between the lower end oil seal mounting surface (N) and the end surface (P) is designed with a flanged corner (12) that can wrap around the end chamfer of the inner ring (3) of the hub bearing. The slope of the flanged corner (12) is 15-45 degrees and the height is 1-3 mm.

3. The wheel hub bearing oil seal press-fitting device according to claim 1, characterized in that: The upper end surface of the annular gland (5) is provided with a plurality of evenly distributed weight-reducing exhaust holes (13) that have both exhaust and weight-reducing functions, and the outer circle is provided with a handle (14) that facilitates transportation, handling, and loading and unloading.

4. The wheel hub bearing oil seal press-fitting device according to claim 1, characterized in that: A first tapered roller (2) with a retainer is installed between the wheel hub bearing outer ring (1) and the first wheel hub bearing inner ring (3) of the wheel hub bearing, and a second tapered roller (11) with a retainer is installed between the wheel hub bearing outer ring (1) and the second wheel hub bearing inner ring (8).

5. The wheel hub bearing oil seal press-fitting device according to claim 1, characterized in that: An adjustment pad (9) is installed between the first wheel hub bearing inner ring (3) and the second wheel hub bearing inner ring (8).

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