Special mounting tool for in-sleeve cylindrical rolling bearing

Abstract

The utility model provides a special mounting tool for an in-sleeve cylindrical rolling bearing, which comprises a pressing rod, a positioning boss is arranged on the pressing rod, an elastic limiting piece is arranged in the positioning boss and can protrude out of the outer wall of the positioning boss, a pressing sleeve capable of sliding along the pressing rod is sleeved on the head of the pressing rod, and the pressing sleeve can wrap the positioning boss and the bearing. An elastic abutting piece is further arranged on the pressing rod in a penetrating mode and abuts against the end face, away from the positioning boss, of the pressing sleeve. The bearing is placed through the pressing sleeve and the positioning boss on the pressing rod, and when the end face of the pressing sleeve is attached to the end face of a bearing hole, due to the fact that a bearing hole mandrel is perpendicular to the end face of the pressing sleeve and is perpendicular to the end face of the pressing sleeve, the axis of the bearing and the axis of the hole are parallel and approximately coaxial; the positioning boss is arranged on the head portion of the pressing rod, the elastic limiting piece is installed in the positioning boss so that the bearing can be sleeved with the pressing rod and fastened without falling off, and meanwhile the operation requirements under the conditions of various directions, deep hole narrow space angles and the like are met and met.

Description

TECHNICAL FIELD

[0001] The utility model relates to bearing installation tool technical field, especially a special installation tool of sleeve inner cylindrical rolling bearing. BACKGROUND

[0002] The bearing installation tool on the market currently adopts simple metal sleeve pipe or round bar to knock the bearing and install it.

[0003] 1. The bearing position is placed manually by hand, the hole position cannot be accurately aligned and installed, and the bearing end face cannot be kept parallel to the bearing hole bottom surface at all times.

[0004] 2. When installing bearings of different azimuth angles (up, down, side type) manually, one hand needs to hold the bearing all the time, otherwise the bearing will fall down immediately, and one person cannot install it.

[0005] 3. When installing bearings in deep hole sleeve inner narrow space, the hand cannot be inserted, the hand cannot hold the bearing to keep stable and parallel state for installation. INVENTION CONTENTS

[0006] To solve the above problems, the utility model aims at providing a special installation tool of sleeve inner cylindrical rolling bearing.

[0007] The utility model adopts the following method to realize: a special installation tool of sleeve inner cylindrical rolling bearing, including the pressure rod, the upper end of pressure rod is equipped with the positioning boss, is equipped with the elastic limit piece that can be relative its radial direction telescopic in the positioning boss, the elastic limit piece can protrude in the outer wall of positioning boss, the head of pressure rod is still equipped with the pressure cover that can slide along pressure rod, the pressure cover can wrap the positioning boss, and can completely wrap the bearing installed on the positioning boss, is still equipped with the elastic top piece on the pressure rod, the elastic top piece and the end surface of pressure cover that is away from the positioning boss are resisted.

[0008] Preferably, the positioning boss is provided with a first positioning part and a second positioning part, the first positioning part is arranged on the upper end of the second positioning part, the second positioning part is fixed on the front end of the pressure rod, the diameter of the first positioning part is less than or equal to the inner diameter of the bearing, the diameter of the second positioning part is greater than or equal to the outer diameter of the bearing, and the diameter of the second positioning part is less than or equal to the inner diameter of the pressure cover; the elastic limit piece is arranged in the first positioning part.

[0009] Preferably, the elastic top piece comprises a spring and a nut, a thread is arranged on the outer surface of the pressure rod and matched with the nut, the spring is arranged on the pressure rod, one end of the spring is abutted against the pressure cover, and the other end of the spring is abutted against the nut.

[0010] Preferably, the upper end surface of the second positioning part is provided with a ring groove around the first positioning part, and the ring groove is opposite to the ball of the bearing.

[0011] Preferably, the inner diameter of the ring groove is equal to the outer diameter of the first positioning part.

[0012] Preferably, the outer wall of the ring groove abuts against the lower end surface of the outer ring of the bearing.

[0013] Preferably, the gap between the inner wall of the pressing sleeve and the outer peripheral surface of the bearing is 0.01-0.04mm; the gap between the outer peripheral surface of the first positioning part and the inner peripheral surface of the bearing is 0.01-0.04mm.

[0014] Preferably, the end of the pressing sleeve abutting against the elastic abutting part is provided with a clearance hole, the pressure rod can be arranged in the clearance hole, the gap between the inner peripheral surface of the clearance hole and the outer peripheral surface of the pressure rod is 0.03-0.07mm; the gap between the inner wall of the pressing sleeve and the outer wall of the second positioning part is 0.03-0.07mm.

[0015] Preferably, the elastic limiting part is a wave spring, the upper of the positioning boss is provided with a radial threaded hole, the wave spring is arranged in the threaded hole, and the head of the wave spring protrudes out of the threaded hole.

[0016] Preferably, the wave spring protrudes out of the threaded hole by 0.3-0.07mm.

[0017] The utility model discloses a beneficial effect lies in: the utility model provides a special installation tool of sleeve inner cylindrical rolling bearing, compared with prior art, the utility model has at least the following technical effects: 1. through the setting of presss from the setting of locating boss on the press bar and places bearing, and presss from the bearing, and presss from and locating boss are in common limit bearing, can make the bearing with the axle of press bar keep parallel state, and the elastic top piece of setting on the press bar and presss from make presss from have certain activity allowance, make the end face of presss from and the end face of bearing hole abut, when the end face of presss from and the end face of bearing hole are pasted, then because the bearing hole axle and its end face are perpendicular, the bearing axle and the end face of presss from are perpendicular, so the axis of bearing and the axis of hole are parallel, close coaxial, set up locating boss at the head of press bar, and the elastic limit piece is installed in locating boss, to play the function of sleeveing into bearing and fastening not falling, by holding press bar and going into corresponding space, bearing can be sent into, and the operation demand under various directions, deep hole narrow space angle and so on is solved and adapted. 2. locating boss designs as first locating part and second locating part, first locating part sleeves bearing, and elastic limit part limits bearing on first locating part, and second locating part is used for the function of pushing bearing to the inside of bearing hole, and the two cooperate and play the function of positioning and conveying bearing in the deep hole of the type of elevation, pitch and side. 3. spring is pushed to the locating boss of the head of press bar and pastes with presss from under the reaction of nut, make the front end face of presss from protrude the end face of bearing, when the end face of presss from and the end face of bearing hole are pasted, then because the bearing hole axle and its end face are perpendicular, the bearing axle and the end face of presss from are perpendicular, so the axis of bearing and the axis of hole are parallel, close coaxial. 4. the upper end face of second locating part sets up annular groove and avoids ball and bearing inner ring, to avoid damaging bearing inner ring and ball in the process of pressing. 5. the first locating part of press bar head and bearing inner ring diameter gap only have 0.01-0.04mm gap, and the gap of bearing outer ring and presss from inner wall is also only 0.01-0.04mm, and the gap of let -go hole and the outer diameter of press bar head is only 0.03-0.07mm, and the gap of presss from inner diameter and the outer diameter of second locating part is only 0.03-0.07mm, to effectively ensure that the position and axial movement between the three are always concentric and coaxial. 6. when the tight wave ball is pressed into the bearing, it can retract relative to the threaded hole, and after the bearing is installed, it pops out and limits the bearing, and then when the bearing is installed in place, the outer periphery of the bearing is in interference fit with the bearing hole, and when the press bar is pulled out in the opposite direction, the tight wave ball can retract and give way, so that the tool can be removed. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 It is a component separate schematic view of the special installation tool of sleeve inner cylindrical rolling bearing of the utility model.

[0019] Fig. 2 It is a structure schematic view of the special installation tool of sleeve inner cylindrical rolling bearing of the utility model.

[0020] Label explanation: 1, pressing rod; 2, positioning boss; 21, first positioning part; 22, second positioning part; 23, ring groove; 3, elastic limiting piece; 4, pressing sleeve; 5, elastic top piece; 51, spring; 52, nut. DETAILED DESCRIPTION

[0021] The utility model will be further explained in connection with the drawings and specific embodiments.

[0022] Please refer to Figs. 1-2 A kind of special installation tool of sleeve inner cylindrical rolling bearing, including pressing rod 1, the upper end of the pressing rod 1 is equipped with positioning boss 2, the positioning boss 2 is equipped with elastic limiting piece 3 that can be radially relative to it telescopic, the elastic limiting piece 3 can protrude from the outer wall of the positioning boss 2, the head of the pressing rod 1 is also equipped with the pressing sleeve 4 that can slide along the pressing rod 1, the pressing sleeve 4 can wrap the positioning boss 2, and can completely wrap the bearing equipped on the positioning boss 2, elastic top piece 5 is also provided on the pressing rod 1, and the end face of the pressing sleeve 4 away from the positioning boss 2 is abutted by the elastic top piece 5. By the setting of pressing sleeve 4 and the setting of positioning boss 2 on pressing rod 1, bearing is placed, and the pressing sleeve 4 can wrap the bearing, and the pressing sleeve 4 and the positioning boss 2 limit bearing together, so that the bearing can keep parallel state with the axis of the pressing rod 1, and the elastic top piece 5 on the pressing rod 1 is set to abut the pressing sleeve 4, so that the pressing sleeve 4 has certain activity allowance, and the end face of the pressing sleeve 4 is abutted to the end face of bearing hole, when the end face of the pressing sleeve 4 is attached to the end face of bearing hole, because the center axis of the bearing hole is perpendicular to its end face, and the center axis of the bearing is perpendicular to the end face of the pressing sleeve 4, so the center axis of the bearing is parallel to the center axis of the hole, and is coaxial. Positioning boss 2 is arranged on the head of the pressing rod 1, and elastic limiting piece 3 is installed in the positioning boss 2, to play the role of sleeving bearing and fastening not to fall, by holding the pressing rod 1 and deepening into corresponding space, bearing can be sent into, and the operation demand under various directions, deep hole narrow space angle and other conditions is solved and adapted. Special installation tool for bearing of four specifications of diameter Ø28, Ø32, Ø42, Ø50 millimeters can be applied, of course, other size specifications of similar bearing installation tools can also be extended, and some hot mounting processes are also included. Not only is suitable for bearing installation work of speed reducer, gearbox and the like in factory, but also is suitable for operation conditions of outdoor and disassembly-free machine.

[0023] Please refer to Figs. 1-2, preferably, the positioning boss 2 is provided with a first positioning part 21 and a second positioning part 22, the first positioning part 21 is arranged at the upper end of the second positioning part 22, the second positioning part 22 is fixed to the front end of the pressing rod 1, the diameter of the first positioning part 21 is less than or equal to the inner diameter of the bearing, the diameter of the second positioning part 22 is greater than or equal to the outer diameter of the bearing, and the diameter of the second positioning part 22 is less than or equal to the inner diameter of the pressing sleeve 4; the elastic limiting part 3 is arranged in the first positioning part 21. The positioning boss 2 is designed as the first positioning part 21 and the second positioning part 22, the first positioning part 21 covers the bearing, the elastic limiting part limits the bearing on the first positioning part 21, and the second positioning part 22 is used for pushing the bearing into the bearing hole, and the two cooperate to position the bearing in the upward, downward, lateral and deep hole.

[0024] Please refer to Figs. 1-2 , preferably, the elastic abutting part 5 includes a spring 51 and a nut 52, the outer circumferential surface of the pressing rod 1 is provided with threads matched with the nut 52, the spring 51 is arranged on the pressing rod 1, one end of the spring 51 abuts against the pressing sleeve 4, and the other end of the spring 51 abuts against the nut 52. The spring 51 pushes the pressing sleeve 4 to the positioning boss 2 at the head of the pressing rod 1 under the action of the nut 52, so that the front end surface of the pressing sleeve 4 is higher than the end surface of the bearing. When the end surface of the pressing sleeve 4 abuts against the end surface of the bearing hole, the axis of the bearing is parallel to the axis of the hole and close to the coaxiality because the center axis of the bearing hole is perpendicular to the end surface and the center axis of the bearing is perpendicular to the end surface of the pressing sleeve 4. Silicone rubber pads or rubber pads and nuts 52 can also be used, but are not limited thereto.

[0025] Please refer to Figs. 1-2 , preferably, the upper end surface of the second positioning part 22 is provided with a ring groove 23 around the first positioning part 21, and the ring groove 23 is opposite to the bearing ball. The inner diameter of the ring groove 23 is equal to the outer diameter of the first positioning part 21. The outer wall upper end surface of the ring groove 23 abuts against the lower end surface of the bearing outer ring. The upper end surface of the second positioning part 22 is provided with the ring groove 23 to avoid the damage to the bearing inner ring and the ball during the pressing process.

[0026] Please refer to Figs. 1-2, preferably, the gap between the inner wall of the pressing sleeve 4 and the outer peripheral surface of the bearing is 0.01-0.04mm; the gap between the outer peripheral surface of the first positioning part and the inner peripheral surface of the bearing is 0.01-0.04mm. An accommodation hole is formed in one end of the pressing sleeve 4 abutting against the elastic top abutting part 5, the pressing rod 1 can be arranged in the accommodation hole, the gap between the inner peripheral surface of the accommodation hole and the outer peripheral surface of the pressing rod 1 is 0.03-0.07mm; the gap between the inner wall of the pressing sleeve 4 and the outer wall of the second positioning part 22 is 0.03-0.07mm. The gap between the first positioning part 21 of the head of the pressing rod 1 and the diameter of the inner ring of the bearing is only 0.01-0.04mm, the gap between the outer ring of the bearing and the inner wall of the pressing sleeve 4 is also only 0.01-0.04mm, the gap between the accommodation hole and the outer diameter of the head of the pressing rod 1 is only 0.03-0.07mm, and the gap between the inner diameter of the pressing sleeve 4 and the outer diameter of the second positioning part 22 is only 0.03-0.07mm, so that the position and axial movement of the three are always concentric and coaxial.

[0027] Please refer to Figs. 1-2 , preferably, the elastic limiting part 3 is a tight wave bead, a radial threaded hole is formed in the positioning boss 2, the tight wave bead is arranged in the threaded hole, and the head of the tight wave bead protrudes out of the threaded hole. The wave bead of the tight wave bead protrudes out of the threaded hole by 0.3-0.07mm. When the tight wave bead is pressed into the bearing, the tight wave bead can be retracted relative to the threaded hole, the bearing is limited after being popped out after being installed, and when the bearing is installed in place, the outer peripheral surface of the bearing is in interference fit with the bearing hole, and the tight wave bead can be retracted for accommodation when the pressing rod 1 is pulled out in the reverse direction, so that the tool can be taken out.

[0028] The utility model has the following working principle:

[0029] 1. M5 or M6 tight wave beads are designed in the head positioning boss 2 of the pressing rod 1 in the transverse direction, so as to be sleeved into the bearing and fastened without falling off, and the operation demand in various directions, space angles and the like is solved and adapted;

[0030] 2. The head top pressing plane (the upper end surface of the second positioning part 22) of the pressing rod 1 adopts a ring groove 23 structure form to avoid, so as to avoid damage to the inner ring of the bearing and the ball in the pressing process.

[0031] 3. The gap between the first positioning part of the positioning boss 2 and the diameter of the inner ring of the bearing is only 0.03mm, the gap between the outer ring of the bearing and the inner wall of the pressing sleeve 4 is also only 0.03mm, the gap between the accommodation hole of the pressing sleeve 4 and the outer diameter of the head of the pressing rod 1 is only 0.06mm, and the gap between the inner wall of the pressing sleeve 4 and the outer diameter of the second limiting part is only 0.06mm, so that the position and axial movement of the three are always concentric and coaxial;

[0032] 4. Spring 51 in the reaction of M20 nut 52, the sleeve 4 is pushed to the head of the pressure rod 1 and the lower end of the second limit part, so that the front end of the sleeve 4 (the upper end) is higher than the bearing end surface (the upper end), when the end surface of the sleeve 4 is in contact with the end surface of the bearing hole, because the bearing hole axis and its end surface is perpendicular, the bearing axis and the end surface of the sleeve 4 is perpendicular, so the axis of the bearing and the axis of the hole is parallel, close to coaxial;

[0033] 5. The R1-3MM chamfer of the bearing end surface and the chamfer of the bearing hole have the effect of guiding the concentricity, so that a certain range of deviation is allowed when placing the bearing (usually it can be observed).

[0034] When assembling, first screw the wave bead into the threaded hole in the positioning boss 2, and the wave bead protrudes about 0.5mm; then the sleeve 4 is sleeved from the tail of the pressure rod 1 and is in contact with the head of the pressure rod 1, then the spring 51 is sleeved from the tail of the pressure rod 1, and then the nut 52 is screwed from the tail of the pressure rod 1 to the spring 51, and the spring 51 is compressed by 1-2mm.

[0035] When operating, when the tool sleeve 4 with the bearing is aligned with the bearing hole to be installed and is kept lightly pressed, the spring 51 is forced to compress, pushing the end surface of the sleeve 4 to completely contact the end surface of the bearing hole, and the bearing in the sleeve 4 will also be pushed out in parallel along the inner wall of the sleeve 4 to contact the end surface of the bearing hole, at this time, pressure is applied from the tail of the pressure rod 1, then the outer diameter of the head of the pressure rod 1 is very small with the gap of the sleeve 4, so it forms a stable parallel axial movement of the guide column and the guide sleeve, so the pressure rod 1 moves with the bearing and the inner wall of the sleeve 4, which is almost completely parallel and coaxial sliding, thereby ensuring that the bearing can always be pressed in parallel. Effectively avoid the defects of unable to be installed and damaged and scrapped due to the non-parallelism of the bearing and the hole; greatly improve the quality and efficiency of production and installation.

[0036] It should be pointed out that in the description of the present application, it should be pointed out that unless otherwise specified and limited, the terms "installation", "connection", "connection" should be understood broadly, which can be mechanical connection or electrical connection, or the communication between two elements, or direct connection, "up", "down", "left", "right" and the like are only used to indicate the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may change.

[0037] Secondly: the utility model discloses the embodiment in the drawing, only the structure involved in the embodiment of the present disclosure is involved, other structures can refer to the usual design, in the case of no conflict, the same embodiment and different embodiments of the utility model can be combined with each other.

[0038] Finally, the preferred embodiments of the utility model are described above, and the protection scope of the utility model is not limited to the above-mentioned embodiments, and any technical scheme falling within the concept of the utility model belongs to the protection scope of the utility model.

[0039] It should be noted that, for those skilled in the art, some improvements and refinements made without departing from the principles of the present application should also be considered within the scope of protection of the present application.

Claims

1. A mounting tool for a sleeve type cylindrical rolling bearing, characterized in that: The pressing rod is provided with a positioning boss at the upper end, the positioning boss is provided with an elastic limiting piece capable of extending and retracting in the radial direction, the elastic limiting piece can protrude from the outer wall of the positioning boss, the head of the pressing rod is further provided with a pressing sleeve capable of sliding along the pressing rod, the pressing sleeve can wrap the positioning boss and completely wrap the bearing installed on the positioning boss, and the pressing rod is further provided with an elastic abutting piece, the elastic abutting piece abuts against the end face of the pressing sleeve away from the positioning boss.

2. The mounting tool for a sleeve type cylindrical rolling bearing according to claim 1, characterized in that: The positioning boss has a first positioning part and a second positioning part, the first positioning part is arranged at the upper end of the second positioning part, the second positioning part is fixed to the front end of the pressing rod, the diameter of the first positioning part is less than or equal to the inner diameter of the bearing, the diameter of the second positioning part is greater than or equal to the outer diameter of the bearing, and the diameter of the second positioning part is less than or equal to the inner diameter of the pressing sleeve; the elastic limiting piece is arranged in the first positioning part.

3. The installation tool for a sleeve type cylindrical rolling bearing according to claim 2, characterized in that: The elastic abutting piece comprises a spring and a nut, the outer peripheral surface of the pressing rod is provided with a thread matched with the nut, the spring is arranged on the pressing rod, one end of the spring abuts against the pressing sleeve, and the other end of the spring abuts against the nut.

4. The installation tool for a sleeve type cylindrical rolling bearing according to claim 3, characterized in that: The upper end face of the second positioning part is provided with a ring groove around the first positioning part, and the ring groove is opposite to the rolling balls of the bearing.

5. The installation tool for a sleeve type cylindrical rolling bearing according to claim 4, characterized in that: The inner diameter of the ring groove is equal to the outer diameter of the first positioning part.

6. A mounting tool for a sleeve type cylindrical rolling bearing according to claim 5, characterized in that: The outer wall of the ring groove abuts against the lower end face of the outer ring of the bearing.

7. The installation tool for a sleeve type cylindrical rolling bearing according to claim 2, characterized in that: The gap between the inner wall of the pressing sleeve and the outer peripheral surface of the bearing is 0.01-0.04mm, and the gap between the outer peripheral surface of the first positioning part and the inner peripheral surface of the bearing is 0.01-0.04mm.

8. The installation tool for a sleeve type cylindrical rolling bearing according to claim 7, characterized in that: The end of the pressing sleeve abutting against the elastic abutting piece is provided with a clearance hole, the pressing rod can pass through the clearance hole, the gap between the inner peripheral surface of the clearance hole and the outer peripheral surface of the pressing rod is 0.03-0.07mm, and the gap between the inner wall of the pressing sleeve and the outer wall of the second positioning part is 0.03-0.07mm.

9. The installation tool for a sleeve type cylindrical rolling bearing according to claim 1, characterized in that: The elastic limiting piece is a tight wave ball, the positioning boss is provided with a radial threaded hole, the tight wave ball is arranged in the threaded hole, and the head of the tight wave ball protrudes from the threaded hole.

10. The installation tool for a sleeve type cylindrical rolling bearing according to claim 9, characterized in that: The wave ball of the tight wave ball protrudes from the threaded hole by 0.3-0.07mm.

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