Press fitting tool for bearing seat

Abstract

The press fitting tool comprises an upper pressing head, a lower pressing head and a bolt pressing head, the bottom of the upper pressing head is provided with an upper pressing end face used for making contact with an outer ring of an upper bearing, and the top of the lower pressing head is provided with a lower pressing end face used for making contact with an outer ring of a lower bearing. A bolt through hole matched with the bolt is formed in the lower pressing head; and the bolt pressure head is annular and is provided with a press-fitting column matched with the bearing seat. The press fitting tool for the bearing seat has the advantages that press fitting of the upper bearing outer ring and the lower bearing outer ring can be completed through one-time press fitting, one-time press fitting of bolts can be completed, operation steps are reduced, and press fitting efficiency can be improved.

Description

Technical Field

[0001] This application belongs to the field of mechanical equipment manufacturing, and particularly relates to a press-fitting tooling for a bearing housing. Background Art

[0002] Before installing the bearing housing of the axle hub and the reducer, it is necessary to press-fit the outer rings of the bearings on both sides of the bearing housing, and press-fit the wheel bolts around the bearing housing.

[0003] As Figure 1 For the bearing housing shown, it is necessary to press-fit the outer rings of the bearings on the upper and lower sides of the bearing housing in two times, that is, press-fit the outer rings of a pair of tapered roller bearings in the inner cavity of the bearing housing, including the upper bearing outer ring and the lower bearing outer ring. Then press-fit the wheel bolts into the bolt holes of the flange of the bearing housing.

[0004] In the prior art, it is necessary to press-fit the upper bearing outer ring, the lower bearing outer ring and the bolts respectively, and different toolings need to be replaced during each press-fitting process, resulting in low work efficiency. The three press-fittings of a bearing housing also lead to a relatively high labor intensity.

[0005] Therefore, a press-fitting tooling for a bearing housing is needed to solve the above problems. Utility Model Content

[0006] In order to solve the deficiencies of the above-mentioned prior art, this application provides a press-fitting tooling for a bearing housing, which can synchronously press-fit the upper bearing outer ring and the lower bearing outer ring, reduce the processes, and improve the press-fitting efficiency.

[0007] The technical effects to be achieved by this application are realized through the following solutions:

[0008] According to the first aspect of this application, a press-fitting tooling for a bearing housing is provided, including an upper press head, a lower press head and a bolt press head. The bottom of the upper press head is provided with an upper press end face for contacting the upper bearing outer ring. The top of the lower press head is provided with a lower press end face for contacting the lower bearing outer ring. The lower press head is provided with a bolt through hole matching the bolt. The bolt press head is annular and provided with a press-fitting column matching the bearing housing.

[0009] Preferably, the bottom of the upper press head is a frustum-shaped guiding part, and the upper press end face is arranged on the bottom surface of the guiding part.

[0010] Preferably, the lower press head includes a base and an ejection mechanism. The top of the base is provided with the lower press end face. The bolt through hole is arranged on the base. The ejection mechanism is arranged on the base for ejecting the bearing housing.

[0011] Preferably, the base includes a bottom plate, a column, and a downward pressing top plate. The column is fixed between the bottom plate and the downward pressing top plate, and the height of the column is not less than the length of the bolt. The bolt through-hole and the downward pressing end face are arranged on the downward pressing top plate.

[0012] Preferably, the ejection mechanism includes a spring seat column, an ejection spring, and an ejector rod. The spring seat column is fixed between the bottom plate and the downward pressing top plate. The ejection spring is arranged in the spring seat column, and the ejector rod is elastically connected to the spring column through the ejection spring.

[0013] Preferably, the bolt press head includes a pressure seat and the press-fitting column. The press-fitting column is fixed to the pressure seat through a snap ring.

[0014] Preferably, the pressure seat is annular and can be sleeved on the bearing seat, and the height of the upper press head is consistent with the depth of the installation cavity of the outer ring of the bearing on the bearing seat.

[0015] According to an embodiment of the present application, the beneficial effect of using the press-fitting tooling of this bearing seat is that it can complete the press-fitting of the upper bearing outer ring and the lower bearing outer ring in one press-fitting, and can also complete the one-time press-fitting of the bolt, reducing the operation steps and helping to improve the press-fitting efficiency. Description of the Drawings

[0016] In order to more clearly illustrate the embodiments of the present application or the existing technical solutions, the following will briefly introduce the drawings required for use in the description of the embodiments or the existing technical solutions. Obviously, the drawings in the following description are only some embodiments recorded in the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a schematic structural diagram of the bearing seat in the background technology of the present application;

[0018] Figure 2 It is a schematic structural diagram of the press-fitting tooling of the bearing seat in an embodiment of the present application;

[0019] Figure 3 For Figure 2 It is a schematic structural diagram of the upper press head;

[0020] Figure 4 For Figure 2 It is a schematic structural diagram of the lower press head;

[0021] Figure 5 For Figure 2 It is a schematic structural diagram of the bolt press head. Detailed Description of the Embodiments

[0022] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts fall within the scope of protection of this application.

[0023] As Figures 1 to 5 shown, the press-fitting tooling for the bearing housing 100 in an embodiment of this application includes an upper press head 200, a lower press head 300, and a bolt press head 400. The bottom of the upper press head 200 is provided with an upper press end face 211 for contacting the outer ring 101 of the upper bearing. The top of the lower press head 300 is provided with a lower press end face 311 for contacting the outer ring 102 of the lower bearing. A bolt through-hole 315 matching the bolt 103 is provided on the lower press head 300; the bolt press head 400 is annular and is provided with a press-fitting column 420 matching the bearing housing 100.

[0024] Through the solution of this embodiment, after placing the bearing housing 100 on the lower press head 300 and then placing the upper press head 200 on the bearing housing 100, it is possible to press-fit two bearing outer rings at one time; after placing the bolt 103 on the bearing housing 100 and then placing the bolt press head 400 in place, the press-fitting of the bolt 103 is completed again. It can be completed in two processes, improving the press-fitting efficiency.

[0025] The bolt press head 400 being annular can ensure that it is sleeved onto the bearing housing 100 to press-fit the bolt 103 at the flange; the diameter of the bolt through-hole 315 is larger than the diameter of the bolt 103, which can avoid interference with the press-fitting of the bolt 103.

[0026] In an embodiment of this application, the bottom of the upper press head 200 is a frustum-shaped guiding portion 210, and the upper press end face 211 is arranged on the bottom surface of the guiding portion 210. The guiding portion 210 can play a role in finely adjusting the position of the upper press head 200 to ensure that the upper press end face 211 can accurately contact the outer ring 101 of the upper bearing, thereby transmitting the pressing force.

[0027] In an embodiment of this application, the lower press head 300 includes a base 310 and an ejection mechanism 320. The top of the base 310 is provided with a lower press end face 311, and the bolt through-hole 315 is arranged on the base 310. The ejection mechanism 320 is arranged on the base 310 for ejecting the bearing housing 100. During the press-fitting process, the pressure of the press can compress the ejection mechanism 320 to press-fit each bearing outer ring. When the press-fitting is completed, the ejection mechanism 320 can eject the bearing housing 100 upward to facilitate the removal of the bearing housing 100 and avoid the fixing of the lower press head 300 and the bearing housing 100 by the tension force, making it difficult to separate.

[0028] In an embodiment of the present application, the base 310 includes a bottom plate 312, a column 313, and a downward pressing top plate 314. The column 313 is fixed between the bottom plate 312 and the downward pressing top plate 314, and the height of the column 313 is not less than the length of the bolt. The bolt through hole 315 and the downward pressing end face 311 are arranged on the downward pressing top plate 314. Only opening the bolt through hole 315 on the downward pressing top plate 314 can avoid interference with the bolt, making processing more convenient. This structure also helps to reduce the weight of the downward pressing head 300, facilitating the operation of workers.

[0029] In an embodiment of the present application, the ejection mechanism 320 includes a spring seat column 321, an ejection spring 322, and an ejector rod 323. The spring seat column 321 is fixed between the bottom plate 312 and the downward pressing top plate 314. The ejection spring 322 is arranged in the spring seat column 321, and the ejector rod 323 is elastically connected to the spring column 313 through the ejection spring 322.

[0030] The spring seat column 321 is a hollow structure, and the ejection spring 322 is located therein. The ejector rod 323 is slidably connected to the hollow structure of the spring seat column 321. There are several ejection mechanisms 320 distributed around the base 310, and the sum of the elastic forces of the ejection springs 322 is greater than the pressing force of the outer ring 102 of the lower bearing, enabling it to eject the bearing seat 100.

[0031] In an embodiment of the present application, the bolt press head 400 includes a pressure seat 410 and a press-fitting column 420. The press-fitting column 420 is fixed to the pressure seat 410 through a circlip. The pressure seat 410 is manufactured by cutting a steel plate and is processed with installation holes for several press-fitting columns 420. The press-fitting column 420 is a cylindrical structure for press-fitting the bolts 103 one by one.

[0032] The number of press-fitting columns 420 can also be half of the number of bolts 103, and the press-fitting is carried out in two times.

[0033] In an embodiment of the present application, the pressure seat 410 is annular and can be sleeved on the bearing seat 100. The height of the upper pressing head 200 is consistent with the depth of the installation cavity of the outer ring 101 of the bearing on the bearing seat 100. During use, after placing the bolts and the upper bearing outer ring 101 in place, both the upper pressing head 200 and the bolt press head 400 are placed on the bearing seat 100, and all the bolts and bearing outer rings can be press-fitted in one press-fitting, further improving work efficiency.

[0034] When this device is in use, place the outer ring 102 of the lower bearing on the downward pressing head 300; place the bearing seat 100 on the evenly distributed ejector rods 323; place the outer ring 101 of the upper bearing on the stop of the bearing seat 100; manually place the upper pressing head 200;

[0035] The press descends, overcoming the elastic force of the ejection spring 322, and moves downward to press-fit the upper bearing outer ring 101 and the lower bearing outer ring 102 in place. After the press head ascends and the upper press head 200 is removed, several wheel bolts 103 are placed into the corresponding bolt holes of the bearing seat 100, the bolt press head 400 is sleeved, and the wheel bolts are pressed in place.

[0036] Alternatively, after placing the upper press head 200, the wheel bolts can be directly placed. After sleeving the bolt press head 400, the press descends to press-fit the upper bearing outer ring 101, the lower bearing outer ring 102, and the wheel bolts 103 in place at one time.

[0037] The beneficial effect of adopting the press-fitting tooling for this bearing seat 100 is that it can complete the one-time press-fitting of the upper bearing outer ring 101, the lower bearing outer ring 102, and the bolts 103 in one press-fitting, reducing the operation steps, reducing the flipping and handling of the workpiece during the press-fitting process, and helping to improve the press-fitting efficiency.

[0038] It should be noted that the above detailed description is exemplary and is intended to provide further illustration of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs.

[0039] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or their combinations.

[0040] It should be noted that the terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects and do not necessarily have to be used to describe a specific order or sequence. It should be understood that such terms can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0041] In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or are inherent to these processes, methods, products, or devices.

[0042] For ease of description, spatial relative terms, such as "above", "over", "on the upper surface", "upper", etc., may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "over" other devices or structures will then be oriented "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device may also be otherwise positioned, such as rotated 90 degrees or at other orientations, and the corresponding explanations for the spatial relative descriptions used herein will be made.

[0043] In the foregoing detailed description, reference has been made to the accompanying drawings, which form a part hereof. In the drawings, like symbols typically identify like components, unless the context indicates otherwise. The illustrated embodiments described in the detailed description, the drawings, and the claims are not meant to be limiting. Other embodiments may be used and other changes may be made without departing from the spirit or scope of the subject matter presented herein.

[0044] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, various modifications and variations can be made to the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A press-fitting tool for a bearing seat, characterized in that: It includes an upper pressure head, a lower pressure head and a bolt pressure head. The bottom of the upper pressure head is provided with an upper pressure end face for contacting the outer ring of the upper bearing, the top of the lower pressure head is provided with a lower pressure end face for contacting the outer ring of the lower bearing, and the lower pressure head is provided with a bolt through hole matching the bolt; the bolt pressure head is annular and is provided with a press-fit column matching the bearing seat.

2. The press-fitting tool for the bearing seat according to claim 1, characterized in that: The bottom of the upper pressure head is a truncated cone-shaped guide portion, and the upper pressure end surface is arranged on the bottom surface of the guide portion.

3. The press-fitting tool for the bearing seat according to claim 1, characterized in that: The pressing head comprises a base and an ejection mechanism, the top of the base is provided with the pressing end surface, the bolt through hole is provided on the base, and the ejection mechanism is arranged on the base for ejecting the bearing seat.

4. The press-fitting tool for the bearing seat according to claim 3, characterized in that: The base includes a bottom plate, a column and a downward pressing top plate, the column is fixed between the bottom plate and the downward pressing top plate, the height of the column is not less than the length of the bolt; the bolt through hole and the downward pressing end surface are arranged on the downward pressing top plate.

5. The press-fitting tool for the bearing seat according to claim 4, characterized in that: The ejection mechanism includes a spring seat column, an ejection spring and an ejector rod, the spring seat column is fixed between the bottom plate and the downward pressing ejector plate, the ejection spring is arranged in the spring seat column, and the ejector rod is elastically connected to the spring seat column through the ejection spring.

6. The press-fitting tool for the bearing seat according to claim 1, characterized in that: The bolt pressing head comprises a pressure seat and the press-fitting column, and the press-fitting column is fixed to the pressure seat by a retaining spring.

7. The press-fitting tool for the bearing seat according to claim 6, characterized in that: The pressure seat is annular and can be sleeved on the bearing seat, and the height of the upper pressure head is consistent with the depth of the installation cavity of the bearing outer ring on the bearing seat.

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