Bearing press-fitting device

Abstract

The invention discloses a bearing press-fitting device, and belongs to the technical field of rail transit vehicle bearing press-fitting tools. The device comprises a device body capable of moving. The transmission part is used for pressing the bearing; the transmission part comprises a guide shaft with the end fixedly connected with a guide sleeve, and the guide shaft is sequentially sleeved with a press-fitting shaft sleeve and a first hydraulic cylinder. The lifting component is arranged on the device main body, is connected with the first hydraulic cylinder and is used for supporting the transmission component to lift; the power system provides a power source for the supporting component and the first hydraulic cylinder; wherein the device main body is provided with a damping part for vertically providing damping buffering force corresponding to the tail end of the guide shaft, and the top end of the damping part is provided with a V-shaped supporting block for supporting a transmission part, so that in a working state, the guide sleeve is connected with the shaft end of an axle, and the first hydraulic cylinder provides reciprocating buffering force to impact and press a press-fitting shaft sleeve and a press-fitting bearing; the press-fitting device has the beneficial effects of being easy to operate, low in difficulty, good in press-fitting quality and beneficial to improving the working efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of bearing press-fitting tooling for rail transit vehicles, and in particular to a bearing press-fitting device. Background Art

[0002] When rail transit vehicles are carrying out the bearing press-fitting process, bearing press-fitting equipment is required for press-fitting operations;

[0003] Traditional bearing press-fitting trolleys are easy to move, simple to operate, and highly adaptable to different sites, and are widely used in bearing press-fitting processes. When press-fitting bearings on subway vehicle wheelsets, operators visually adjust the coaxiality of the spiral spindle of the bearing press-fitting equipment and the bearing at the end of the wheelset shaft. This method is ineffective and of poor quality. The coaxiality of the spiral spindle and the bearing is often not guaranteed, and severe vibrations often occur during the press-fitting process. Vibration problems frequently cause scratches on the bearings and shaft diameters, accompanied by oscillations in the press-fitting curve and breakage of the spiral spindle, which seriously affects the product quality of the wheelset shaft end bearing press-fitting.

[0004] Therefore, based on the above problems, how to solve the severe vibration during the press-fitting process and improve the press-fitting quality has become an important issue that technical personnel in this field need to solve urgently. Summary of the invention

[0005] The purpose of the present invention is to overcome the defects of the prior art and provide a bearing press-fitting device with low operating difficulty and high press-fitting quality.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] The present invention discloses a bearing press-fitting device, comprising:

[0008] A device body capable of displacement;

[0009] Transmission components for press-fit bearings;

[0010] The transmission component includes a guide shaft with a guide sleeve fixedly connected to the end, and a press-fit shaft sleeve and a first hydraulic cylinder are sequentially mounted on the guide shaft; and

[0011] a lifting component installed on the device body and connected to the first hydraulic cylinder for supporting the lifting of the transmission component; and

[0012] a power system providing a power source for the support member and the first hydraulic cylinder;

[0013] Among them, the device body is equipped with a shock-absorbing component corresponding to the tail end of the guide shaft for providing vertical vibration reduction and buffering force, and the top of the shock-absorbing component is equipped with a V-shaped support block for supporting the transmission component, so that in the working state, the guide sleeve is connected to the axle end and the first hydraulic cylinder provides reciprocating buffering force to impact the press-fitted sleeve and press-fitted bearing.

[0014] Furthermore, the guide shaft is provided with a locking piece and a locking sleeve at a position corresponding to the V-shaped support block;

[0015] The locking member is threadedly connected to the guide shaft;

[0016] One end of the locking sleeve contacts the locking member, and the other end contacts the first hydraulic cylinder.

[0017] Furthermore, the locking member is a nut or a threaded sleeve with a threaded hole.

[0018] Furthermore, the shock absorbing component is a shock absorbing damping spring device;

[0019] The top end of the shock-absorbing and damping spring device is fixedly connected to the V-shaped support block, and the bottom end of the shock-absorbing and damping spring device is fixedly connected to a lead screw for spiral transmission with a support arranged on the device body.

[0020] Furthermore, the lifting component is provided with a support rod supporting the lifting of the first hydraulic cylinder and a second hydraulic cylinder connected to the power system;

[0021] The top end of the piston rod of the second hydraulic cylinder is slidably connected to the support rod via a sliding block.

[0022] Furthermore, the power system is carried on the device body, and the power system includes a linear motor and a hydraulic pump.

[0023] Furthermore, a mounting hole is provided on the surface of the guide sleeve that contacts the end of the axle, and the mounting hole is fixedly connected to the axle by bolts.

[0024] In the above technical solution, the present invention provides a bearing press-fitting device, which has the following beneficial effects:

[0025] The bearing pressing device designed in the present invention avoids the problems of complicated and inconvenient operation, strong vibration, poor pressing quality and low efficiency compared with the prior art in which the operator visually adjusts to ensure the horizontal pressing of the bearing pressing device. In the bearing pressing device, one end of the guide shaft of the transmission component is adjusted by a lifting component to meet the axle height, and the other end is supported by a shock-absorbing component. There is no need for manual visual leveling, which reduces the risks of scratches on the bearing and the shaft diameter, fluctuations in the pressing curve, and poor product quality. The device is simple to operate and has good stability. At the same time, the device can have its own shock-absorbing function through the shock-absorbing component, which effectively alleviates the vibration problem of the bearing pressing device, improves the operation quality, and alleviates the locking pressure on the guide shaft, effectively prolongs the service life of the guide shaft, and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0027] Figure 1 It is an axonometric diagram of a bearing press-fitting device disclosed in the present invention;

[0028] Figure 2 It is a front full cross-sectional view of a bearing press-fitting device disclosed in the present invention;

[0029] Figure 3 It is a top view of a bearing press-fitting device disclosed in the present invention;

[0030] Figure 4 It is a left side view of a bearing press-fitting device disclosed by the present invention.

[0031] Description of reference numerals:

[0032] 10. Device body; 11. Universal wheel;

[0033] 20. Guide shaft; 21. Guide sleeve; 22. Press-fit sleeve; 23. First hydraulic cylinder; 24. Locking sleeve; 25. Locking piece;

[0034] 30. Lifting component; 31. Second hydraulic cylinder; 32. Support rod; 33. Push rod;

[0035] 40. shock absorbing damping spring; 41. V-shaped support block; 42. lead screw;

[0036] 50. Linear motor;

[0037] 60. Hydraulic pump. DETAILED DESCRIPTION

[0038] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0039] See also Figure 1-3 As shown;

[0040] A bearing press-fitting device is invented, comprising:

[0041] The device body 10 has universal wheels 11 installed at the bottom thereof for moving the device body 10;

[0042] A transmission component is used for press-fitting bearings. The transmission component has a guide shaft 20. A guide sleeve 21 is fixedly connected to one end of the guide shaft 20. Three mounting holes are opened at the end of the guide sleeve 21. The guide sleeve 21 is fixedly connected to the end of the axle by three bolts to ensure that the position of the guide sleeve 21 is fixed and avoid visually ensuring the coaxiality between the guide sleeve 21 and the axle. During press-fitting, the guide sleeve 21 is sleeved with a bearing on the outside. A press-fitting sleeve 22 and a first hydraulic cylinder 23 are sequentially sleeved on the outside of the guide shaft 20 from the end of the guide sleeve 21. One end of the press-fitting sleeve 22 contacts the bearing, and the other end contacts the first hydraulic cylinder 23. The first hydraulic cylinder 23 provides a press-fitting force for the press-fitting sleeve 22.

[0043] The lifting component 30 is installed on the upper part of the device body 10 and is used to support the transmission component so that the transmission component meets the height requirement of the axle. The top end of the lifting component 30 is connected to the first hydraulic cylinder 23.

[0044] The power system provides a power source for the supporting components and the first hydraulic cylinder 23. The power system is carried on the device body 10. The power system includes a linear motor 50 and a hydraulic pump 60 installed on the device body 10. The hydraulic pump 60 is an aluminum alloy hydraulic pump 60. The linear motor 50 can enable the hydraulic pump 60 to realize the driving function. The hydraulic pump 60 can convert the mechanical energy input by the linear motor 50 into liquid pressure energy output to the hydraulic cylinder.

[0045] A shock absorbing component is installed at the tail end of the guide shaft 20 corresponding to the device main body 10. The shock absorbing component is used to provide vertical vibration damping and buffering force. A V-shaped support block 41 for supporting the transmission component is installed on the top of the shock absorbing component. When working, the guide sleeve 21 is connected to the axle end, and the first hydraulic cylinder 23 is started to provide reciprocating buffering force to impact the press-fitted sleeve 22 to realize the press-fitted bearing.

[0046] See also Figure 2 As shown:

[0047] Preferably, the guide shaft 20 is provided with a locking member 25 and a locking sleeve 24 at a position corresponding to the V-shaped support block 41;

[0048] The locking member 25 is threadedly connected to the guide shaft 20. The locking member 25 is a nut or a threaded sleeve with a threaded hole, which can realize spiral transmission with the guide shaft 20. The locking member 25 cooperates with the guide sleeve 21 to clamp the locking sleeve 24, the first hydraulic cylinder 23, and the press-fitting sleeve 22 that are sequentially mounted on the guide shaft 20. The spiral transmission can also make the distance between the locking member 25 and the guide sleeve 21 adjustable.

[0049] One end of the locking sleeve 24 contacts the locking member 25 , and the other end contacts the first hydraulic cylinder 23 .

[0050] See also Figure 4 As shown:

[0051] Preferably, the shock absorbing component is a shock absorbing damping spring device 40;

[0052] A V-shaped support block 41 is fixedly connected to the top of the shock-absorbing and damping spring device 40, and the locking sleeve 24 is supported by the V-shaped support block 41. A lead screw 42 is fixedly connected to the bottom end of the shock-absorbing and damping spring device 40 for spiral transmission with a support arranged on the device body 10. The lead screw 42 cooperates with the support to achieve adjustable height of the V-shaped support block 41, thereby cooperating with the lifting component 30 to ensure that the guide shaft 20 is in a horizontal state and the press-fitting accuracy is ensured. At the same time, the shock-absorbing and damping spring device 40 can alleviate and reduce the force and vibration of the guide shaft 20.

[0053] See also Figure 1 As shown:

[0054] Preferably, the lifting component 30 is provided with a support rod 32 supporting the lifting of the first hydraulic cylinder 23 and a second hydraulic cylinder 31 connected to the power system, and the top end of the piston rod of the second hydraulic cylinder 31 is slidably connected to the support rod 32 through a slider.

[0055] Specifically, the lifting component 30 includes a base, on which a second hydraulic cylinder 31 is installed. One end of a support rod 32 is rotatably connected to the base, and the other end of the support rod 32 is connected to the first hydraulic cylinder 23 through a push rod 33. The top end of the piston rod of the second hydraulic cylinder 31 is slidably connected to the support rod 32 through a slider. When the piston rod of the second hydraulic cylinder 31 is extended, the support rod 32 is driven to rotationally support the lifting of the transmission component.

[0056] In the above technical solution, the present invention provides a bearing press-fitting device, and a method of use:

[0057] First, move the device body 10 to the desired position using the four universal wheels 11, and adjust the lifting component 30 to the desired height;

[0058] The guide sleeve 21 with the guide shaft 20 is bolted to the three holes at the end of the axle;

[0059] The bearing unit, the press-fit sleeve 22, the first hydraulic cylinder 23, the locking sleeve 24, and the locking piece 25 are sequentially installed on the guide shaft 20 and fixed by the locking piece 25. The bearing unit is sleeved on the guide sleeve 21, and one end contacts the axle, and the other end contacts the press-fit sleeve 22.

[0060] The lead screw 42 is adjusted to the required height for contact with the locking sleeve 24, and the bearing pressing device is started. The hydraulic pressure is generated by the linear motor 50 and the hydraulic pump 60, so that the first hydraulic cylinder 23 continuously performs reciprocating impact motion to complete the bearing pressing work.

[0061] The bearing press-fitting device has a transmission component end supported by a shock-absorbing component, and a first hydraulic cylinder performs rapid reciprocating linear motion. The transmission component effectively alleviates frequent vibrations during operation through the shock-absorbing component, and has simple operation, low difficulty, good press-fitting quality, and helps to improve work efficiency.

[0062] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A bearing press-fitting device, characterized in that: include: A displaceable device body (10); Transmission components for press-fit bearings; The transmission component comprises a guide shaft (20) with a guide sleeve (21) fixedly connected to the end thereof, and a press-fit shaft sleeve (22) and a first hydraulic cylinder (23) are sequentially mounted on the guide shaft (20); and further comprises a lifting component (30) installed on the device body (10) and connected to the first hydraulic cylinder (23) for supporting the lifting of the transmission component; and a power system providing a power source for the supporting member and the first hydraulic cylinder (23); The device body (10) is provided with a shock-absorbing component for vertically providing a vibration-absorbing and buffering force corresponding to the tail end of the guide shaft (20), and a V-shaped support block (41) for supporting the transmission component is provided at the top end of the shock-absorbing component, so that in the working state, the guide sleeve (21) is connected to the axle end, and the first hydraulic cylinder (23) provides a reciprocating buffering force to impact the press-fitted sleeve (22) and the press-fitted bearing.

2. A bearing press-fitting device according to claim 1, It is characterized by: The guide shaft (20) is provided with a locking piece (25) and a locking sleeve (24) at a position corresponding to the V-shaped support block (41); The locking member (25) is threadedly connected to the guide shaft (20); One end of the locking sleeve (24) contacts the locking member (25), and the other end contacts the first hydraulic cylinder (23).

3. A bearing press-fitting device according to claim 2, characterized in that ； The locking piece (25) is a nut or a threaded sleeve with a threaded hole.

4. A bearing press-fitting device according to claim 1, characterized in that; The shock absorbing component is a shock absorbing damping spring device (40); The top end of the shock-absorbing and damping spring device (40) is fixedly connected to the V-shaped support block (41), and the bottom end of the shock-absorbing and damping spring device (40) is fixedly connected to a lead screw (42) for spiral transmission with a support arranged on the device body (10).

5. A bearing press-fitting device according to claim 1, characterized in that; The lifting component (30) is provided with a support rod (32) for supporting the lifting of the first hydraulic cylinder (23) and a second hydraulic cylinder (31) connected to the power system; The top end of the piston rod of the second hydraulic cylinder (31) is slidably connected to the support rod (32) via a sliding block.

6. A bearing press-fitting device according to claim 1, characterized in that ； The device body (10) carries the power system, which includes a linear motor (50) and a hydraulic pump (60).

7. A bearing press-fitting device according to claim 1, It is characterized by: A mounting hole is provided on the surface of the guide sleeve (21) that contacts the end of the axle, and the mounting hole is fixedly connected to the axle via bolts.

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