Separating device for 353130B type bearing rear gear and bearing

Abstract

The utility model discloses a device for separating a 353130B type bearing rear gear from a bearing, which solves the problem that a special device for separating the 353130B type bearing rear gear from the bearing is lacked in the prior art. The device comprises a first opening and closing part and a second opening and closing part, the two opening and closing parts are hinged, the device further comprises a handle holding part and an embedded operation part, and the device is characterized in that the embedded operation part comprises a clamping piece and a prying piece, the prying piece is fixedly connected with the first opening and closing part, the clamping piece is fixedly connected with the second opening and closing part, and the clamping piece is fixedly connected with the clamping piece. The prying piece is provided with an arc-shaped edge I, the clamping piece is provided with an arc-shaped edge II, and the arc-shaped edge II of the clamping piece and the arc-shaped edge I of the prying piece have a height difference. According to the device, the clamping pieces and the prying pieces which are of the special-shaped fan-shaped structures with the circle center angle of 60 degrees are adopted, the clamping pieces take the bearing outer ring as a force application point, the prying pieces take the rear gear end face as a force application point, a bearing oil seal rubber ring is reasonably avoided, and the bearing oil seal rubber ring is prevented from being damaged due to stress.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing maintenance for railway freight car maintenance. Background Art

[0002] Type 353130B bearings are widely used on railway freight cars. It is necessary to regularly maintain them, and the maintenance process involves disassembling the 353130B bearings. The following problems are found during the disassembly process.

[0003] (1) Due to the too tight fit of the plastic-steel spacer between the 353130B bearing and the rear retainer, about 10% of the rear retainers cannot be automatically separated from the bearing after the bearing is removed, and they cannot be separated by hand.

[0004] (2) In this case during on-site operation, the operator uses a brake shoe poker to pry the rear retainer of the bearing outwards with the bearing oil seal rubber as a fulcrum to achieve the separation of the rear retainer and the bearing. This situation is likely to damage the bearing oil seal. If the brake shoe poker still cannot achieve the separation purpose when the rear retainer and the bearing are too tight, the on-site operator sometimes uses other heavier objects as tools, such as using another rear retainer of the bearing to strike the rear retainer of this bearing to achieve the separation purpose. During the striking process, it is easy to hit the outer ring of the bearing, causing damage to the outer ring of the bearing and leaving a safety hazard.

[0005] (3) The self-weight of the rear retainer reaches 3 kg. During the operation of the operator holding this device, due to the weight of the rear retainer plus the impact momentum of falling, this device and the rear retainer of the bearing are likely to fall to the ground together, presenting a certain safety hazard.

[0006] Therefore, it is necessary to design a device specifically for the separation operation of the rear retainer and the bearing of the 353130B bearing. Summary of the Invention

[0007] To solve the deficiencies of the prior art, the utility model provides a separation device for the rear retainer and the bearing of the 353130B bearing, which solves the problem of the lack of a special device for separating the rear retainer and the bearing of the 353130B bearing in the prior art and improves the operation efficiency and separation quality.

[0008] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0009] 353130B - type bearing rear retaining ring separation device, which includes a first opening - and - closing part and a second opening - and - closing part. The two opening - and - closing parts are hinged. It also includes a handle - holding part and an embedded operating part. It is characterized in that: the embedded operating part includes a card and a pry bar. The pry bar is fixedly connected to the first opening - and - closing part, and the card is fixedly connected to the second opening - and - closing part. Among them, the pry bar has an arc - shaped edge Ⅰ, and this arc - shaped edge Ⅰ has a blade. The card has an arc - shaped edge Ⅱ, and this arc - shaped edge Ⅱ has a blade. And after the pry bar and the card are closed, there is a height difference between the arc - shaped edge Ⅱ of the card and the arc - shaped edge Ⅰ of the pry bar.

[0010] Further, the card and the pry bar form a sector - shaped piece with a central angle of 60 degrees.

[0011] Further, anti - slip surfaces are provided at the arc - shaped edge Ⅰ and the arc - shaped edge Ⅱ.

[0012] Further, the arc - shaped edge Ⅰ of the pry bar is embedded in the gap between the bearing and the rear retaining ring.

[0013] Further, the arc - shaped edge Ⅱ of the card is in contact with the side surface of the bearing outer ring.

[0014] Further, the handle - holding part is a handle structure with an internal grip - force design, and an arc - shaped anti - slipping - off structure is provided on the handle.

[0015] Further, a receiving hook is fixedly provided on the outer side of the pry bar. The receiving hook is a hook formed by bending a steel bar, and the outer end of the receiving hook abuts against the outer side of the rear retaining ring.

[0016] Further, a strong magnetic block is provided at the end of the receiving hook.

[0017] Further, blocks are provided on the two handles of the handle - holding part. One of the blocks has a threaded hole, and the other block has a smooth hole. The screw is in clearance fit with the smooth hole and in screw - thread fit with the threaded hole.

[0018] Further, the end of the screw is an internal - hexagon bolt head.

[0019] The beneficial effects of the present utility model are as follows:

[0020] (1) This device uses a card and a pry bar with a special - shaped sector structure of double - piece with a central angle of 60 degrees. The card uses the bearing outer ring as the force - applying point, and the pry bar uses the end face of the rear retaining ring as the force - applying point, reasonably avoiding the bearing oil - seal rubber ring and preventing the bearing oil - seal rubber ring from being damaged due to force.

[0021] (2) The handle - holding part of this device converts the internal grip - force into an external thrust force, and uses the principle of the lever of force - saving to magnify the grip - force by 2 times, achieving the purpose of separating the rear retaining ring from the bearing, which conforms to the principle of ergonomics.

[0022] (3) A receiving hook was developed and installed at the end of this device, and an arc-shaped anti-slip structure was designed on the handle of the separation device. After the rear retainer is separated from the bearing, the rear retainer is accurately received by the receiving structure, avoiding the rear retainer of the bearing from falling to the ground after separation, and reducing the labor intensity.

[0023] (4) The combined design of screws and an electric wrench is used to replace the hand-held gripping force, reducing the labor intensity of the operation.

[0024] The use of this device solves the problem of the separation of the rear retainer and the bearing of the 353130B type bearing after dismounting, avoids damage to the bearing, greatly reduces the labor intensity of the operator, and eliminates the potential labor safety hazard of the rear retainer falling and injuring the worker. Description of the Drawings

[0025] Figure 1 It is a perspective view of the first embodiment.

[0026] Figure 2 It is a dimensional drawing of the card.

[0027] Figure 3 It is a dimensional drawing of the pry bar.

[0028] Figure 4 It is a perspective view of the second embodiment.

[0029] Figure 5 It is a perspective view of the third embodiment.

[0030] Figure 6 It is a use state diagram of the second embodiment.

[0031] In the figure:

[0032] 101 First opening and closing part, 102 Second opening and closing part, 103 Handle gripping part, 1031 Screw, 1032 Threaded hole, 1033 Light hole, 104 Embedded operation part, 105 Hinged connection,

[0033] 201 Card, 2011 Arc edge Ⅱ, 202 Pry bar, 2021 Arc edge Ⅰ, 2022 Receiving hook, 2023 Strong magnet block,

[0034] 01 Bearing inner ring, 02 Rear retainer, 03 Bearing outer ring, 04 Bearing oil seal rubber ring. Detailed Implementation Modes

[0035] First Embodiment

[0036] Reference Figure 1, the device includes a first opening and closing part 101 and a second opening and closing part 102. The two opening and closing parts are hinged at 105 to form a moment amplification, having a lever effect. After being hinged, a handle holding part 103 and an embedded operation part 104 are formed. The handle holding part is designed with an inner grip force instead of an outer thrust force, which is convenient for applying force. And an arc-shaped anti-slip structure is designed on the handle to ensure operation safety.

[0037] Among them, the embedded operation part includes a card 201 and a pry bar 202 fixed by welding. The card and the pry bar have different functional designs.

[0038] Reference Figure 3 , the pry bar 202 has an arc-shaped edge Ⅰ 2021 that can be inserted into the gap between the bearing and the rear retainer. This arc-shaped edge Ⅰ has a blade, that is, a wedge-shaped arc-shaped edge. This structure allows the pry bar to be smoothly inserted into the gap between the inner ring 01 of the bearing and the rear retainer 02. After the pry bar is inserted, it can loosen the rear retainer and the bearing initially by shaking left and right.

[0039] Reference Figure 2 , the card 201. The surface area of the card is smaller than that of the pry bar. The card also has an arc-shaped edge Ⅱ 2011. This arc-shaped edge Ⅱ 2011 cooperates with the side surface of the outer ring 03 of the bearing, and an anti-slip design, such as a rubber layer, is provided at the position of this arc-shaped edge.

[0040] The card and the pry bar form a special-shaped sector structure with a central angle of 60 degrees, where the β angle is 60 degrees. Reference Figure 2 and Figure 3 .

[0041] The above-mentioned pry bar and card are used in combination. After the pry bar and the card are closed, there is a height difference H between the arc-shaped edge Ⅱ of the card and the arc-shaped edge Ⅰ of the pry bar. In this embodiment, H is 14 mm, that is, they do not coincide. The existence of this height difference enables the device to avoid the position where the bearing oil seal rubber ring is located during use, avoiding damage to the bearing oil seal rubber ring, which is crucial.

[0042] After the implementation of this technology, the device is a tool with the end faces of the outer ring 03 of the bearing and the rear retainer 02 as the force application points during actual use, avoiding the bearing oil seal rubber ring 04 from being stressed and damaged, effectively ensuring the integrity of the bearing assembly during the disassembly process.

[0043] Furthermore, the above-mentioned pry bar and card are made of high-carbon steel, having higher rigidity.

[0044] Embodiment 2

[0045] Reference Figure 4 and Figure 6By observing the use of the first generation of products, it was found that the rear end of the bearing fell directly to the ground after separation, and people had to bend down to pick it up, which posed a safety hazard. The tool was improved again, and through field tests, a receiving structure was added to the bottom of the device to eliminate the safety hazard of the rear end falling to the ground.

[0046] Specifically, a hook-shaped receiving hook 2022 is welded and fixed on the outer side of the pry piece 202. The receiving hook is a bent hook formed by bending a steel bar. The outer end of the receiving hook rests against the outer side of the rear stop and constrains the rear stop in the horizontal direction to prevent the rear stop from falling out of control suddenly.

[0047] Furthermore, a strong magnetic block 2023 and a strong magnetic block installation groove are provided at the end of the above-mentioned receiving hook. Specifically, a circular installation groove is welded at the end of the receiving hook, and the strong magnetic block 2023 is fixed in the installation groove. The strong magnetic block and the above-mentioned rear stop form a magnetic attraction, which further improves the restraining force on the rear stop.

[0048] Drawing on the overall structure of the scissors, an arc-shaped anti-slip structure is designed on the handle of the separation device to ensure that the rear stop of the bearing will not fall to the ground after separation.

[0049] Embodiment 3

[0050] Because the plastic-steel spacer is too tightly fitted and difficult to separate by hand, the present embodiment improves the handle gripping portion 103. Figure 5 Specifically, the two handles of the handle gripping part are connected by a screw 1031. Specifically, two blocks are installed on the two handles, one of which has a threaded hole 1032, which is threaded by turning the screw, and the other block has a light hole 1033, which is clearance-matched with the screw neck. By turning the screw, the two handles are closed or opened. The end of the screw is designed as a hexagon socket bolt head, which can be easily operated by an electric wrench, thereby improving work efficiency. In this embodiment, the design structure utilizes the principle of a labor-saving lever to amplify the force, and uses screws and electric wrenches for operation, thereby improving work efficiency, taking into account the operator's operating habits, and solving the problem that the rear stop and the bearing cannot be separated by hand.

[0051] Through field tests, the device can well realize the separation of the bearing back stop from the bearing and the bearing back stop will no longer fall to the ground after separation. It also improves the working efficiency and reduces the potential safety hazards during field operations.

[0052] The above-described embodiments are merely descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements made by those skilled in the relevant art to the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. 353130B-type bearing rear retainer and bearing separation device, the device comprising a first opening and closing part and a second opening and closing part, the two opening and closing parts being hinged to each other, and further comprising a handle holding part and an embedded operation part, characterized in that: The embedded operating part includes a card and a pry bar. The pry bar is fixedly connected to the first opening and closing part, and the card is fixedly connected to the second opening and closing part. Among them, the pry bar has an arc-shaped edge Ⅰ, and this arc-shaped edge Ⅰ has a blade. The card has an arc-shaped edge Ⅱ, and this arc-shaped edge Ⅱ has a blade. And after the pry bar and the card are closed, there is a height difference between the arc-shaped edge Ⅱ of the card and the arc-shaped edge Ⅰ of the pry bar.

2. The 353130B type bearing rear retainer and bearing separation device according to claim 1, characterized in that, The card and the pry bar form a sector piece with a central angle of 60 degrees.

3. The 353130B type bearing rear retainer and bearing separation device according to claim 1, characterized in that, An anti-slip surface layer is provided at the arc-shaped edge Ⅰ and the arc-shaped edge Ⅱ.

4. The 353130B type bearing rear retaining ring and bearing separation device according to claim 1, characterized in that, The arc-shaped edge Ⅰ of the pry bar is embedded in the gap between the bearing and the rear baffle.

5. The 353130B type bearing rear retaining ring and bearing separation device according to claim 1, characterized in that, The arc-shaped edge Ⅱ of the card cooperates with the side surface of the outer ring of the bearing.

6. The 353130B type bearing rear retainer and bearing separation device according to claim 1, characterized in that, The handle holding part is a handle structure with an inner grip force design, and an arc-shaped anti-slip structure is provided on the handle.

7. The 353130B type bearing rear retainer and bearing separation device according to claim 1, characterized in that, A receiving hook is fixedly provided on the outer side of the pry bar. The receiving hook is a hook formed by bending a steel bar, and the outer end of the receiving hook abuts against the outer side of the rear baffle.

8. The 353130B type bearing rear retainer and bearing separation device according to claim 7, characterized in that, A strong magnetic block is provided at the end of the receiving hook.

9. The separating device for the rear retaining ring of the 353130B type bearing and the bearing according to claim 1, wherein, Block bodies are provided on the two handles of the handle holding part. One of the block bodies has a threaded hole, and the other block body has a light hole. The screw is in clearance fit with the light hole and in screw fit with the threaded hole.

10. The 353130B-type bearing rear retainer and bearing separation device according to claim 9, wherein The end of the screw is an internal hexagonal bolt head.

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