A universal mechanism for disassembling bearings of electric locomotive gearbox

Abstract

The present invention provides a universal mechanism for disassembling bearings of electric locomotive gearboxes, including a front pressure plate and a rear pressure plate, wherein the centers of the front pressure plate and the rear pressure plate are both provided with a central through hole, a locking bolt is inserted into the central through hole of the front pressure plate, at least three top screw through holes are evenly distributed around the axis of the front pressure plate, each top screw through hole is fixed with a top screw nut coaxial with the top screw through hole, a top screw is inserted into the top screw nut; a locking nut is provided on the central through hole of the rear pressure plate. The beneficial effects of the present invention are that the mechanism has a simple structure, flexibility and versatility, is suitable for disassembling bearings of various types of locomotive gearboxes, can solve multiple disassembly problems with one mechanism, does not require operators to repeatedly perform disassembly and positioning, etc., improves disassembly efficiency, and saves material costs.

Description

Technical Field

[0001] The present invention relates to the field of mechanical parts disassembly auxiliary equipment, and specifically to a universal mechanism for disassembling bearings of electric locomotive gearboxes. Background Art

[0002] In the existing technology, due to the small internal space of the gearbox and the extremely narrow operating space, three M8 / M10×150mm top screws are usually used for disassembly. The disadvantage is that the three top screw holes on the gearbox have broken wires and the threads are worn flat, which makes it impossible to repair or disassemble. In addition, there are aluminum parts inside the gearbox. If violent disassembly methods such as jacks, electric angle grinders or impact drills are used, it is very easy to cause the gearbox to deform, the bearings to be scrapped, or related aluminum parts to be scrapped. The scrapping cost is 50,000 to 100,000 yuan, causing huge losses to the production unit. Summary of the invention

[0003] The problem to be solved by the present invention is to provide a universal mechanism for disassembling bearings of a gearbox of an electric locomotive, thereby overcoming the deficiencies in the prior art.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a universal mechanism for disassembling bearings of a gearbox of an electric locomotive, comprising a front pressure plate and a rear pressure plate, the centers of the front pressure plate and the rear pressure plate are both provided with a central through hole, a locking bolt is passed through the central through hole of the front pressure plate, at least three top screw through holes are evenly distributed on the front pressure plate around its axis, a top screw nut coaxial with the top screw through hole is fixed on each of the top screw through holes, a top screw is passed through the top screw nut;

[0005] A locking nut is provided on the central through hole of the rear pressure plate.

[0006] Optionally, the rear pressure plate is provided with a plurality of rear pressure plate space pads.

[0007] Optionally, the locking nut and the upper ends of the top screw both have hexagonal ends.

[0008] Optionally, an inner gear ring is fixed on the surface of the front pressure plate, and a gear is sleeved on the outside of each of the top screw nuts. The top screw nut is coaxial with the gear, and the gear is meshed with the inner gear ring.

[0009] The advantages and positive effects of the present invention are: the mechanism has a simple structure, flexibility and versatility, is suitable for disassembling bearings of various types of locomotive gearboxes, can solve multiple disassembly problems with one mechanism, does not require operators to repeatedly perform disassembly and positioning, etc., thereby improving disassembly efficiency and saving material costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the overall structure of a specific implementation mode 1 of the present invention;

[0011] Figure 2 is a schematic diagram of the working state of the first specific implementation mode;

[0012] Figure 3 It is a schematic diagram of the overall structure of a second specific implementation mode of the present invention;

[0013] In the figure: 1. locking bolt; 1-1. hexagon socket end; 2. jackscrew; 2-1. jackscrew nut; 2-2. gear; 3. front pressure plate; 3-1. inner gear ring; 4. gear box bearing cover plate; 4-1. jackscrew hole; 5. gear box bearing; 6. bearing box; 7. rear pressure plate; 8. locking nut; 9. rear pressure plate space block. DETAILED DESCRIPTION

[0014] The present invention is further described in detail below in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be a connection between the two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances. Specific implementation method one:

[0016] like Figure 1 As shown, the present invention provides a universal mechanism for disassembling bearings of a gearbox of an electric locomotive, including a front pressure plate 3 and a rear pressure plate 8, the centers of the front pressure plate 3 and the rear pressure plate 8 are both provided with a central through hole, a locking bolt 1 is passed through the central through hole of the front pressure plate 3, three top screw through holes are evenly distributed around the axis of the front pressure plate 3, a top screw nut 2-1 coaxial with the top screw through hole is fixed to each top screw through hole, a top screw 2 is passed through the top screw nut 2-1; a locking nut 1 is provided on the central through hole of the rear pressure plate 8. A plurality of rear pressure plate space pads 9 are provided on the rear pressure plate 8. The upper ends of the locking nut 1 and the top screw 2 are both provided with inner hexagonal ends.

[0017] The above mechanism is used when, Figure 2 As shown, first pass the top screw 2 through the top screw nut 2-1 on the front pressure plate 3, and unscrew the top screw 2 by 3-5mm, close the front pressure plate 3 to the gear box bearing cover plate 4, and pass the top screw 3 through the flattened top screw hole 4-1 on the gear box bearing cover plate 4 for positioning, pass the locking bolt 1 through the central through hole of the front pressure plate 3, and fix it with the locking nut 8 on the rear pressure plate 7 on the other side of the bearing box 6. By tightening the locking bolt 1, the rear pressure plate 7 is gradually pulled closer to the bearing box 6 until the rear pressure plate space pad 9 is close to the outer support surface of the bearing box 6. At this time, the mechanism has met the conditions for disassembling the gear box bearing 5;

[0018] Use an electric wrench to rotate the top screws 2 in sequence, and rotate the three top screws 2 inward 5-8 circles each time. At this time, it can be found that the gear box bearing 5 in the bearing box 6 is slowly loosened and pushed away from the gear box bearing cover plate 4. Continue to use the electric wrench to rotate the top screws 2 inward in sequence, and rotate the three top screws 2 inward 8-10 circles each time. Quickly disassemble the gear box bearing 5 until the gear box bearing 5 is separated from the bearing box 6 and fits with the rear pressure plate space pad 9;

[0019] Disassemble and separate the locking bolt 1 and the locking nut 8, remove the rear pressure plate 7, and you can see that the gear box bearing 5 has been separated from the bearing box 6, and can be directly removed by hand or with a magnetic hanger to complete the disassembly.

[0020] When disassembling the gearbox bearings of different models, it is only necessary to replace the top screws 2 and the front pressure plates 3) of different models according to the actual models, so that the gearbox bearings of multiple models of locomotives can be disassembled by one mechanism. Specific implementation method 2:

[0022] This embodiment is improved on the basis of the specific implementation method one, and an inner gear ring structure is added to achieve the purpose of making the three top screws 2 rotate synchronously and avoiding the gear box bearing 5 from being skewed and stuck in the process of being pushed out by the top screw 2. The specific structure is: an inner gear ring 3-1 is fixed on the surface of the front pressure plate 3, and each top screw nut 2-1 is sleeved with a gear 2-2 on the outside. The top screw nut 2-1 is coaxial with the gear 2-2, and the gear 2-2 is meshed with the inner gear ring 3-1.

[0023] The embodiments of the present invention are described in detail above, but the contents described are only preferred embodiments of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A universal mechanism for disassembling gearbox bearings of electric locomotives, characterized in that: It comprises a front pressing plate and a rear pressing plate, wherein the centers of the front pressing plate and the rear pressing plate are both provided with a central through hole, a locking bolt is passed through the central through hole of the front pressing plate, at least three top screw through holes are evenly distributed around the axis of the front pressing plate, a top screw nut coaxial with the top screw through hole is fixed to each of the top screw through holes, and a top screw is passed through the top screw nut; A locking nut is provided on the central through hole of the rear pressure plate.

2. The universal mechanism for disassembling the bearing of the electric locomotive gearbox according to claim 1, characterized in that: The rear pressing plate is provided with a plurality of rear pressing plate space pads.

3. The universal mechanism for disassembling the gearbox bearing of an electric locomotive according to claim 1, characterized in that: The upper ends of the locking nut and the top screw are both provided with hexagonal socket ends.

4. The universal mechanism for disassembling the gearbox bearing of an electric locomotive according to any one of claims 1 to 3, characterized in that: An inner gear ring is fixed on the surface of the front pressure plate, and a gear is sleeved on the outside of each of the top screw nuts. The top screw nut is coaxial with the gear, and the gear is meshed with the inner gear ring.

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