Conical bearing extractor

Abstract

The utility model provides a cone bearing extractor, which relates to the technical field of shaft release of a tapered roller bearing, and comprises a mounting shaft, a puller, a pull claw, a mounting groove, an O-shaped ring, a pull sleeve and a slot, the tapered roller bearing is inversely arranged on the mounting shaft, and the roller radian of the tapered roller bearing is gradually reduced from top to bottom; according to the device, the inverted tapered roller bearing can be effectively separated from the shaft by means of the puller, the integrity of the tapered roller bearing after shaft separation is good, the retainer does not need to be damaged in the shaft separation process, the six-petal type pull claw structure is attached to the roller, and meanwhile the pull sleeve is matched with the six-petal type pull claw, so that the shaft separation efficiency is improved. And finally, the pulling requirement of a two-claw / three-claw puller can be met through the six clamping grooves, so that the shaft separation effect of the tapered roller bearing is remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to conical roller bearing technology field of taking off, concretely relates to a taper bearing puller. BACKGROUND

[0002] The conical roller bearing is a kind of separated bearing, its inner ring and outer ring are designed as taper raceway structure, and the rolling element is conical roller.Its core function is to bear radial load and one-way axial load, and it can balance bidirectional axial force by being installed in pairs.

[0003] At present, the conical roller bearing needs to be inverted in high-precision machine tool, bidirectional load equipment, compact space structure and impact vibration environment, to optimize performance through play synchronous adjustment, and if the conical roller bearing is damaged in inverted scene, it needs to be separated from the shaft by puller, and the current shaft removal method needs to damage the retainer of the conical roller bearing to make several rollers fall off, so that the integrity of the conical roller bearing cannot be guaranteed, and the shaft removal process of inverted conical roller bearing needs to be improved. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving the problem in the above background art, and further provides a taper bearing puller.

[0005] The utility model solves the technical scheme as follows:

[0006] A taper bearing puller includes a mounting shaft and a puller, a conical roller bearing is inverted on the mounting shaft, and the roller curvature of the conical roller bearing gradually decreases from top to bottom, further including a puller claw, a mounting groove, an O-ring, a puller sleeve and a plug-in slot,

[0007] The puller claw with curvature is in contact with the roller of the conical roller bearing, and the inner wall curvature of the puller claw gradually increases from top to bottom;

[0008] The mounting groove is arranged on the puller claw, and the mounting groove is matched with the elastic O-ring;

[0009] The inner wall of the puller sleeve is matched with the outer wall of the puller claw;

[0010] The plug-in slot is circumferentially arranged on the puller sleeve, and the plug-in slot is matched with the puller claw of the puller.

[0011] Further, the O-ring is matched with six puller claws of the same height.

[0012] Further, the puller sleeve is circumferentially provided with six plug-in slots to adapt to two-puller claw puller / three-puller claw puller.

[0013] Further, the roller of the conical roller bearing is made of high-carbon chromium steel and has a hardness of HRC58-62.

[0014] Further, the pull sleeve and the pull claw are made of carburizing steel.

[0015] Compared with the prior art, the device has the beneficial effects that:

[0016] Compared with the prior art, the device can realize effective disengagement of the inverted conical roller bearing and the shaft by means of the puller, the conical roller bearing has good integrity after disengagement, the cage does not need to be damaged during the disengagement process, the six-petal pull claw structure is attached to the roller, at the same time, the pull sleeve cooperates with the six-petal pull claw, and finally the two-grab / three-grab puller pulling requirement can be met through the six clamping grooves, and thus the disengagement effect of the conical roller bearing is significantly improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Fig. 2 It is a schematic diagram of the pull claw installation;

[0019] Fig. 3 It is a schematic diagram of the installation groove;

[0020] Reference signs:

[0021] 1, conical roller bearing; 2, pull claw; 21, installation groove; 22, O-ring; 3, pull sleeve; 31, insertion slot; 4, puller. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model. The utility model will be further described in combination with the drawings and embodiments:

[0023] As shown in the drawings, Figs. 1 to 3 A taper bearing puller includes a mounting shaft (not shown in the drawings) and a puller 4, a conical roller bearing 1 is inverted on the mounting shaft, and the roller curvature of the conical roller bearing 1 gradually decreases from top to bottom, and further includes a pull claw 2, an installation groove 21, an O-ring 22, a pull sleeve 3, and an insertion slot 31,

[0024] The six pull claws 2 with curvature and equal height are respectively in contact with the rollers of the conical roller bearing 1, and the inner wall curvature of the pull claw 2 gradually increases from top to bottom;

[0025] The installation groove 21 is provided on the pull claw 2, and the installation groove 21 is matched with the elastic O-ring 22.

[0026] The inner wall of the sleeve 3 is in close contact with the outer wall of the claw 2.

[0027] Six insertion grooves 31 are circumferentially provided on the sleeve 3, and the insertion grooves 31 are matched with the claws 2 of the two-jaw puller 4 / three-jaw puller 4.

[0028] In order to improve the hardness and wear resistance of the rollers, the rollers of the tapered roller bearing 1 are made of high-carbon chromium steel and have a hardness of HRC 58-62 in further optimization of the above embodiment.

[0029] In order to further reduce the wear between the claw 2 and the roller and between the sleeve 3 and the claw 2, the sleeve 3 and the claw 2 are made of carburizing steel in further optimization of the above embodiment.

[0030] The working process of the utility model is as follows:

[0031] Firstly, the outer ring of the tapered roller bearing 1 is removed (the outer ring is not shown in the figure and the removal process does not need to be completed with the aid of tools, and the operation is convenient), and then the sleeve 3 is passed through the tapered roller bearing 1 from top to bottom and located outside the tapered roller bearing 1 (at this time, the sleeve 3 does not contact any other part).

[0032] Then, the installation grooves 21 on the six claws 2 are matched with the O-rings 22 in sequence to complete the installation, and the six claws 2 can be placed in a small position space, and after the six claws 2 are all matched with the O-rings 22, the inner wall of the claw 2 is in close contact with the roller due to the rebounding force of the O-ring 22, and at the same time, the outer wall of the claw 2 is in close contact with the inner wall of the sleeve 3, and then the claws 2 of the puller 4 are passed through the insertion grooves 31 and the steel balls at the ends of the screw rods are placed on the shaft, and then the disengagement of the tapered roller bearing 1 and the shaft can be realized by rotating the screw rods manually or by tools. It should be noted that since the curvature trend of the claw 2 is opposite to that of the roller, the claw 2 will not be separated from the roller during the movement of the sleeve 3, and the claw 2 will not be separated from the sleeve 3, and then the disengagement process of the inverted tapered roller bearing 1 can be completed. The cage of the tapered roller bearing 1 after disengagement will not be damaged, and the roller will not be separated, the integrity of the tapered roller bearing 1 after disassembly is good, the force applied to the roller by the claw 2 during installation will not be transmitted to the cage, and the wear between the claw 2 and the roller can be ignored due to the high hardness of the roller.

[0033] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A taper bearing extractor comprising a mounting shaft and a puller arm (4), a tapered roller bearing (1) is inverted on the mounting shaft and the roller arc of the tapered roller bearing (1) gradually decreases from top to bottom, characterized in that, Also include the pull claw (2), installation groove (21), O type ring (22), pull sleeve (3) and plug groove (31), The pull claw (2) with radian is respectively contacted with the roller of the tapered roller bearing (1), and the inner wall radian of the pull claw (2) gradually increases from top to bottom; The installation groove (21) is opened on the pull claw (2), and the installation groove (21) is matched with the O type ring (22) with elasticity; The inner wall of the pull sleeve (3) is matched with the outer wall of the pull claw (2); The plug groove (31) is circumferentially opened on the pull sleeve (3), and the plug groove (31) is matched with the pull claw (2) of the puller (4).

2. A taper bearing puller according to claim 1, wherein, The O type ring (22) is matched with six equal height pull claws (2) at intervals.

3. A taper bearing puller as claimed in claim 1, wherein, The pull sleeve (3) is circumferentially opened with six plug grooves (31) to adapt two jaw puller / three jaw puller.

4. A taper bearing puller as claimed in claim 1, wherein, The roller of the tapered roller bearing (1) is prepared by high carbon chromium steel and the hardness is HRC58-62.

5. A taper bearing puller according to claim 4, wherein, The pull sleeve (3) and the pull claw (2) are prepared by carburizing steel.

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