Auxiliary positioning device for pressing bearing on end cover

Abstract

The auxiliary positioning device comprises a bottom plate, a positioning seat is arranged on the top face of the bottom plate, and the positioning seat comprises a supporting disc matched with a machining face on the inner side of a box cover and an annular supporting part arranged on the outer wall of the supporting disc and connected with the edge of an opening of the box cover in an abutting mode. A supporting column used for fixing a bearing and connected with the bottom plate is arranged on the top face of the supporting disc, the positioning base can move up and down relative to the supporting column, and a positioning groove matched with a positioning rib on the inner wall of the box cover is formed in the side wall of the positioning base. The positioning device has the characteristics that the relative position between the box cover and the bearing can be accurately positioned, the influence on the accuracy and the reliability of the press fitting of the box cover and the bearing due to deviation is avoided, the stable press fitting quality of the box cover and the bearing is ensured, and the like.

Description

Technical Field

[0001] The utility model relates to an auxiliary positioning device for a pressure bearing on an end cover, belonging to the technical field of bearing press-fitting. Background Art

[0002] In the prior art, press-fitting of bearings is a conventional technical means. Currently, the bearings are press-fitted to the box cover. The bearings need to be press-fitted into the bearing mounting holes of the box cover in advance to improve assembly efficiency.

[0003] A Chinese patent application with publication number CN219946071U discloses a press-fitting device for a reduction gearbox housing and an oil-containing bearing, comprising a press pin and a positioning seat located below the press pin, wherein the positioning seat is provided with a vertical limit rod, and the limit rod is elastically supported on the positioning seat, and the limit rod comprises a first mating section for mating with a through hole of the oil-containing bearing and a second mating section for mating with a hole to be pressed in the reduction gearbox housing, wherein the second mating section is located at the lower end of the first mating section, the diameter of the first mating section is smaller than the diameter of the second mating section, and the first mating section and the second mating section can extend upward to the outside of the positioning seat under the elastic action.

[0004] In the prior art, for the press-fitting of the box cover and the bearing, the rough surface on the box cover and the bearing are positioned relative to each other to press the bearing into the bearing mounting hole on the box cover. However, since the rough surface has not been finely processed, dimensional deviation is prone to occur. There is a deviation in the relative position between the bearing and the bearing mounting hole on the box cover, which makes it easy for the bearing and the bearing mounting hole to be pressed incorrectly or damaged during press-fitting. Utility Model Content

[0005] The utility model aims to provide an auxiliary positioning device for a pressure bearing on an end cover, which solves the problems of positioning deviation in the prior art.

[0006] The above technical purpose of the utility model is mainly solved by the following technical solutions: an auxiliary positioning device for a pressure bearing on an end cover, comprising a bottom plate, a positioning seat is arranged on the top surface of the bottom plate, the positioning seat comprises a support plate matched with the machined surface on the inner side of the box cover and an annular support portion arranged on the outer wall of the support plate and abutting against the edge of the box cover opening, a support column for fixing the bearing and connected to the bottom plate is arranged on the top surface of the support plate, the positioning seat can move up and down relative to the support column, and a positioning groove matched with the positioning rib on the inner wall of the box cover is arranged on the side wall of the positioning seat; the above positioning seat is arranged on the bottom plate, and the positioning seat can be matched with the machined surface on the inner side of the box cover through the support plate The box cover can be positioned more accurately, and the position deviation between the bearing and the bearing mounting hole of the box cover can be reduced. The abutment between the annular support portion and the edge of the box cover opening can further enhance the position accuracy of the box cover on the horizontal plane, and avoid the problem of tilting and offset of the box cover. The positioning groove and the positioning ribs on the inner wall of the box cover cooperate to facilitate accurate calibration of the position of the bearing mounting hole of the box cover and the position of the bearing, ensuring that the bearing mounting hole of the box cover is coaxially positioned with the bearing, thereby achieving accurate positioning of the relative position between the box cover and the bearing, avoiding deviations that affect the accuracy and reliability of the press-fitting of the box cover and the bearing, and ensuring the stable press-fitting quality of the box cover and the bearing.

[0007] Preferably, a plurality of return springs connected to the base plate are provided at the bottom of the positioning seat, and a positioning column is provided at the bottom of the support column, which passes through the positioning seat and is connected to the top surface of the base plate; the setting of the above-mentioned return spring allows the positioning seat to rebound and reset through the action of the return spring after being pressed down to assemble the bearing, so that the bearing is separated from the positioning seat to achieve press-fitting with the box cover, and the setting of the positioning column can support and fix the support column, and limit and guide the up and down movement of the positioning seat to avoid deviation of the positioning seat when moving up and down, which affects the press-fitting accuracy of the bearing.

[0008] Preferably, a receiving cavity for accommodating the support column and the bearing is provided on the top surface of the support plate, the outer diameter of the support column is larger than the outer diameter of the positioning column, and the bottom surface of the support column can abut against the bottom surface of the receiving cavity; the above-mentioned receiving cavity accommodates the support column and the bearing, and limits the movable maximum height of the positioning seat through the support column, ensuring that the positioning seat is at a stable height after being reset, so as to ensure the repeated press-fitting effect of the bearing.

[0009] Preferably, the position of the support column corresponds to the position of the bearing mounting hole on the box cover, and a fixing column that cooperates with the inner ring of the bearing is provided on the top surface of the support column, and the upper end of the fixing column does not protrude from the upper end surface of the bearing; the above-mentioned support column plays a role in positioning the bearing, and the bearing is fixed and limited by the fixing column to facilitate precise press-fitting of the bearing and easy disengagement of the bearing after press-fitting. The arrangement that the upper end of the above-mentioned fixing column does not protrude from the upper end surface of the bearing can avoid the fixing column being too long and causing resistance or interference with the pressure head, thereby affecting the normal press-fitting of the bearing.

[0010] Preferably, a top plate that can move up and down relative to the bottom plate is provided directly above the bottom plate, and a pressing head is provided on the bottom surface of the top plate corresponding to the top of the positioning seat, and the bottom surface of the pressing head cooperates with the blank surface of the box cover; the above-mentioned top plate is arranged to be movable up and down relative to the bottom plate, so as to facilitate the driving of an external press to drive the pressing head to press down the blank surface of the box cover, thereby realizing the press-fitting of the box cover and the bearing, and the precise and reliable press-fitting of the box cover and the bearing is realized by the cooperation between the bottom surface of the pressing head and the blank surface of the box cover.

[0011] Preferably, guide columns parallel to each other are provided on the top surface of the bottom plate corresponding to both sides of the positioning seat, the guide columns extend upward and are penetrated through the top plate, compression springs are sleeved around the guide columns, and the two ends of the compression springs are respectively in contact with the top surface of the bottom plate and the bottom surface of the top plate; the guide columns connect the bottom plate and the top plate, support and guide the movement of the top plate, so that the top plate maintains stable movement, and the compression springs are arranged so that the top plate and the pressure head can be assisted in resetting through the compression springs after the pressure is pressed down, and at the same time play a buffering role when the pressure head is pressed down, reduce vibration and noise, and reduce the impact when the pressure head is pressed down.

[0012] Therefore, the utility model has the characteristics of being able to accurately locate the relative position between the box cover and the bearing, avoiding deviations that affect the accuracy and reliability of the press-fitting of the box cover and the bearing, and ensuring the stable press-fitting quality of the box cover and the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure 2 yes Figure 1 Schematic diagram of partial structure explosion.

[0015] Figure 3 yes Figure 1 Schematic diagram of the structure from another perspective. DETAILED DESCRIPTION

[0016] The technical solution of the utility model is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0017] like Figure 1-2 As shown, an auxiliary positioning device for a pressure bearing on an end cover comprises a base plate 1, a positioning seat 3 is provided on the top surface of the base plate 1, the positioning seat 3 comprises a support plate 31 matched with the machined surface on the inner side of the box cover and an annular support portion 32 provided on the outer wall of the support plate 31 and abutting against the edge of the box cover opening, a support column 33 for fixing the bearing and connected to the base plate 1 is provided on the top surface of the support plate 31, the positioning seat 3 can move up and down relative to the support column 33, and a positioning groove 34 matched with the positioning rib on the inner wall of the box cover is provided on the side wall of the positioning seat 3.

[0018] The above-mentioned positioning seat is arranged above the top surface of the bottom plate, and the positioning seat cooperates with the machined surface (such as the inner wall, etc.) on the inner side of the box cover through the circumferential outer wall of the support plate. The support column is arranged on the top of the support plate and is provided with multiple bearings to be pressed in accordance with the requirements. The bearing is fixed on the support column and the position of the bearing cooperates with the bearing mounting hole on the inner side of the box cover. The annular support portion is protrudingly arranged on the side wall of the support plate, and the top surface of the annular support portion abuts against the end surface (i.e., the machined surface) at the opening of the box cover. The end surfaces on the inner side of the box cover and the opening of the box cover are both processed in advance with high precision, so that the positioning precision of the relative position of the box cover and the bearing is higher. The positioning groove on the side wall of the positioning seat cooperates with the positioning rib on the inner wall of the box cover to limit the circumferential position of the box cover, so that the bearing mounting hole on the box cover can be directly aligned with the bearing, thereby improving the positioning efficiency.

[0019] like Figure 1-2 As shown, a plurality of return springs 35 connected to the base plate 1 are provided at the bottom of the positioning seat 3, a positioning column 36 is provided at the bottom of the support column 33 which passes through the positioning seat 3 and is connected to the top surface of the base plate 1, and a receiving cavity 311 for accommodating the support column 33 and the bearing is provided on the top surface of the support plate 31. The outer diameter of the support column 33 is larger than the outer diameter of the positioning column 36, and the bottom surface of the support column 33 can abut against the bottom surface of the receiving cavity 311. The position of the support column 33 corresponds to the position of the bearing mounting hole on the box cover, and a fixing column 331 which cooperates with the inner ring of the bearing is provided on the top surface of the support column 33, and the upper end of the fixing column 331 does not protrude from the upper end surface of the bearing.

[0020] A plurality of return springs are arranged between the above-mentioned positioning seat and the base plate, so that when the positioning seat is pressed, the return springs are synchronously extended and contracted, the bottom end of the positioning column is fixedly connected to the base plate, the top end of the positioning column passes through the supporting plate and is connected to the bottom end of the supporting column, the top end of the supporting column is in the accommodating cavity and a fixing column protruding upward is arranged, the bearing is fixed on the fixing column, the inner ring of the bearing is cooperated with the fixing column and plugged in, when the supporting plate is pressed and moved downward, the return spring contracts, the box cover moves downward synchronously, the bearing is relatively still, and the box cover moves downward so that the bearing is gradually pressed into the bearing mounting hole of the box cover. After the press-fitting is completed, the downward pressure on the positioning seat is cancelled, and the return spring acts on the positioning seat to automatically reset. When the positioning seat automatically resets, it moves upward relative to the support column and drives the box cover with the bearing pressed upward, thereby making the bearing detach from the support column.

[0021] like Figure 3 As shown, a top plate 2 which can move up and down relative to the bottom plate 1 is provided directly above the bottom plate 1, a pressure head 21 is provided on the bottom surface of the top plate 2 corresponding to the top of the positioning seat 3, the bottom surface of the pressure head 21 cooperates with the blank surface of the box cover, and guide columns 11 arranged parallel to each other are provided on the top surface of the bottom plate 1 corresponding to both sides of the positioning seat 3. The guide columns 11 extend upward and penetrate the top plate 2, and a compression spring 12 is sleeved around the side of the guide column 11, and the two ends of the compression spring 12 are respectively abutted against the top surface of the bottom plate 1 and the bottom surface of the top plate 2.

[0022] After the bearing is fixed to the upper end of the support column and the box cover is assembled on the positioning seat, the external press pushes the pressure head and the top plate down along the guide column, the return spring and the compression spring contract, and the pressure head contacts the blank surface on the top of the box cover and continues to press down until the bearing is pressed into the bearing mounting hole of the box cover. Then the pressure stops, the top plate and the pressure head return to their original positions, the compression spring assists the top plate to return to its original position, and the positioning seat is automatically returned by the return spring, so that the bearing is separated from the support column, thereby completing the press-fitting of the bearing and the box cover.

Claims

1. An auxiliary positioning device for a pressure bearing on an end cover, characterized in that: The invention comprises a bottom plate (1), a positioning seat (3) being provided on the top surface of the bottom plate (1), the positioning seat (3) comprising a support plate (31) cooperating with a machined surface on the inner side of a box cover and an annular support portion (32) being provided on the outer wall of the support plate (31) and abutting against the edge of an opening of the box cover, a support column (33) being provided on the top surface of the support plate (31) and being used for fixing a bearing and being connected to the bottom plate (1), the positioning seat (3) being movable up and down relative to the support column (33), and a positioning groove (34) being provided on the side wall of the positioning seat (3) and cooperating with a positioning rib on the inner wall of the box cover.

2. The auxiliary positioning device for the end cover upper pressure bearing according to claim 1 is characterized in that: The bottom of the positioning seat (3) is provided with a plurality of return springs (35) connected to the bottom plate (1), and the bottom of the support column (33) is provided with a positioning column (36) passing through the positioning seat (3) and connected to the top surface of the bottom plate (1).

3. The auxiliary positioning device for the end cover upper pressure bearing according to claim 2 is characterized in that: The top surface of the support plate (31) is provided with an accommodating cavity (311) for accommodating a support column (33) and a bearing, the outer diameter of the support column (33) is greater than the outer diameter of the positioning column (36), and the bottom surface of the support column (33) can abut against the bottom surface of the accommodating cavity (311).

4. The auxiliary positioning device for the end cover upper pressure bearing according to claim 1 is characterized in that: The position of the support column (33) corresponds to the position of the bearing mounting hole on the box cover, and a fixing column (331) matching with the inner ring of the bearing is provided on the top surface of the support column (33), and the upper end of the fixing column (331) does not protrude from the upper end surface of the bearing.

5. The auxiliary positioning device for the end cover upper pressure bearing according to claim 1 is characterized in that: A top plate (2) is provided directly above the bottom plate (1) and is movable up and down relative to the bottom plate (1). A pressing head (21) is provided on the bottom surface of the top plate (2) corresponding to the top surface of the positioning seat (3). The bottom surface of the pressing head (21) cooperates with the blank surface of the box cover.

6. The auxiliary positioning device for the end cover upper pressure bearing according to claim 1, characterized in that: Guide columns (11) arranged parallel to each other are provided on the top surface of the bottom plate (1) corresponding to both sides of the positioning seat (3); the guide columns (11) extend upward and penetrate the top plate (2); a compression spring (12) is sleeved around the guide columns (11); two ends of the compression spring (12) are respectively in contact with the top surface of the bottom plate (1) and the bottom surface of the top plate (2).

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