High-strength and high-oil-tightness gearbox casing

Abstract

The utility model discloses a high-strength and high-oil-tightness gear box body, and relates to the technical field of gear boxes, in particular to a high-strength and high-oil-tightness gear box body which comprises a gear box body, and at least one first flow guide groove and at least one second flow guide groove are formed in the inner side wall of the gear box body. The first flow guide groove and the second flow guide groove are formed in the inner wall of the gear box body, so that the lubricating oil can be effectively guided; lubricating oil flows through the first flow guide grooves and the second flow guide grooves, the lubricating oil has a good lubricating effect on bearings, gears and the like in the gearbox body, the falling speed of the lubricating oil is high, and the striking noise is low; scrap iron in lubricating oil is filtered and magnetically attracted through a filter screen and a magnet block in the filter assembly, so that the scrap iron is fixed to the filter assembly, the scrap iron is prevented from flowing along with the lubricating oil to affect transmission parts such as bearings and gears, and the transmission safety of the transmission parts in the gear box body is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gearboxes, in particular to a gearbox housing with high strength and high oil tightness. Background Technique

[0002] The subway drive gearbox is a key component of subway vehicles, mainly used for transmitting power and changing the direction of power transmission. It vertically transmits force to another rotating shaft through a rotating shaft. Usually, a large gear drives a small gear to rotate, realizing functions such as changing the torque, accelerating and decelerating, and engaging and disengaging, thus playing an indispensable role in modern urban transportation. The design of the gearbox needs to consider multiple key technical factors, including the transmission structure, the housing, the bearing selection, and the lubrication and sealing structure, etc. The transmission structure of the subway gearbox usually has two forms: single-stage helical gear transmission and two-stage helical gear transmission. The single-stage transmission gearbox has a simple structure, high transmission efficiency, small occupied space, and light weight, but has higher requirements for the strength of the gears. The two-stage transmission gearbox has a relatively complex structure, but can improve the load-bearing capacity of the gearbox to meet the needs of subway vehicles to increase speed and load-bearing capacity. The material of the gearbox housing is usually selected as ductile iron or cast aluminum alloy.

[0003] In the publicly disclosed Chinese patent application, the publication number: CN214946308U, the patent name: High-performance gearbox housing. This prior art has a lubricating oil guiding function, so that the bearings and gears in the gearbox can obtain good lubrication effects at the beginning of the subway operation, and the lubricating oil has a fast falling speed and small impact noise; the structure is reasonable, the weight is small, and the anti-load impact ability is strong. Although this prior art has the above effects, there are certain limitations in the specific implementation process of this prior art. When this prior art is specifically implemented, after the gears inside the gearbox housing work for a long time, meshing collisions between the gear teeth will generate a certain amount of iron filings. With the long-term accumulation of iron filings, the iron filings will flow and move with the lubricating oil, which will affect the transmission safety inside the gearbox housing. Summary of the Utility Model

[0004] (1) Technical Problems to be Solved

[0005] Aiming at the deficiencies of the prior art, the utility model provides a gearbox housing with high strength and high oil tightness, and solves the problems put forward in the above background technique.

[0006] (2) Technical Solutions

[0007] To achieve the above objectives, the utility model is realized through the following technical solutions: a high-strength and high-oil-tightness gear box body, including a gear box body main body, at least one first diversion groove and a second diversion groove are opened on the inner side wall of the gear box body main body; a lubricating oil injection port is opened on the side wall of the gear box body main body, a cover plate is installed at the lubricating oil injection port of the gear box body main body, a filtering component is fixedly installed on one side wall of the cover plate, and the filtering component is located inside the gear box body main body. The filtering component includes a filter screen and a magnet block, and the magnet block is fixedly connected with the filter screen.

[0008] Optionally, bolts are threadedly connected to both ends of the cover plate, and the two bolts are threadedly connected with the gear box body main body.

[0009] Optionally, the filtering component further includes a baffle in the shape of a mouth-shaped frame. The filter screen includes a first filter screen and a second filter screen. One end edge of the first filter screen is fixedly connected with the cover plate. The second filter screen covers the baffle, and the other end edge of the first filter screen is fixedly connected with the baffle and the second filter screen respectively.

[0010] Optionally, the magnet block is fixedly connected with the baffle.

[0011] (III) Beneficial effects

[0012] The utility model provides a high-strength and high-oil-tightness gear box body, which has the following beneficial effects:

[0013] Through the combined setting of the gear box body main body and the filtering component, the high-strength and high-oil-tightness gear box body has the effects of filtering lubricating oil and collecting iron filings. By opening the first diversion groove and the second diversion groove on the inner wall of the gear box body main body, it can effectively guide the lubricating oil; inject lubricating oil into the gear box body main body through the lubricating oil injection port, and the lubricating oil flows through the first diversion groove and the second diversion groove. The lubricating oil has a good lubricating effect on the bearings, gears, etc. inside the gear box body main body. The lubricating oil has a fast falling speed and low impact noise; the filter screen and the magnet block in the filtering component filter and magnetize the iron filings in the lubricating oil, so that the iron filings are fixed in the filtering component, avoiding the influence of the iron filings flowing with the lubricating oil on the transmission parts such as bearings and gears, and improving the transmission safety of the transmission parts inside the gear box body main body. Description of the drawings

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0015] Figure 1 This is a three-dimensional structure schematic diagram of the high-strength and high-oil-tightness gear box of the present utility model;

[0016] Figure 2 This is a sectional structure schematic diagram of the high-strength and high-oil-tightness gear box of the present utility model;

[0017] Figure 3 is Figure 2 an enlarged structure schematic diagram at position A in

[0018] Figure 4 This is a three-dimensional structure schematic diagram of the cover plate in the high-strength and high-oil-tightness gear box of the present utility model.

[0019] In the figure: 1. Main body of the gear box; 2. Cover plate; 3. Bolt; 4. First diversion groove; 5. Second diversion groove; 6. Filter screen; 7. Baffle; 8. Magnet block. Specific embodiments

[0020] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the accompanying drawings. In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model 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 should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying.

[0021] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" 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, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0022] Please refer to Figures 1 to 4, the present utility model provides a technical solution: a high-strength and high-oil tightness gear box body, including a gear box body main body 1, and at least one first diversion groove 4 and a second diversion groove 5 are provided on the inner side wall of the gear box body main body 1. A lubricating oil injection port is provided on the side wall of the gear box body main body 1, and a cover plate 2 is installed at the lubricating oil injection port of the gear box body main body 1. A filtering component is fixedly installed on one side wall of the cover plate 2, and the filtering component is located inside the gear box body main body 1. The filtering component includes a filter screen 6 and a magnet block 8, and the magnet block 8 is fixedly connected to the filter screen 6.

[0023] Among them, the first diversion groove 4 and the second diversion groove 5 are used to strengthen the fluidity of the lubricating oil inside the gear box body main body 1. The lubricating oil flows along the first diversion groove 4 and the second diversion groove 5, and the lubricating oil overflows outward along the grooves during the flowing process, strengthening the infiltration effect of the lubricating oil on the components such as bearings and gears inside the gear box body main body 1. By providing a lubricating oil injection port on the gear box body main body 1, it is convenient to add or replace the lubricating oil. The filter screen 6 and the magnet block 8 in the filtering component are used to filter and magnetically attract the iron filings in the lubricating oil, so that the iron filings are fixed on the filtering component, avoiding the influence of the iron filings flowing with the lubricating oil on the transmission parts such as bearings and gears, and improving the transmission safety of the transmission parts inside the gear box body main body 1. The filter screen 6 is used to filter the iron filings in the lubricating oil, and the magnet block 8 is used to magnetically attract the iron filings in the lubricating oil.

[0024] Specifically, bolts 3 are threadedly connected to both ends of the cover plate 2, and the two bolts 3 are threadedly connected to the gear box body main body 1.

[0025] Among them, the cover plate 2 is fixedly installed on the gear box body main body 1 through a plurality of bolts 3. And a sealing gasket is provided at the abutting portion of the cover plate 2 and the gear box body main body 1 to prevent the lubricating oil from overflowing.

[0026] Specifically, the filtering component further includes a baffle 7 in the shape of a mouth-shaped frame. The filter screen 6 includes a first filter screen and a second filter screen. One end edge of the first filter screen is fixedly connected to the cover plate 2, the second filter screen covers the baffle 7, and the other end edge of the first filter screen is fixedly connected to the baffle 7 and the second filter screen respectively. The magnet block 8 is fixedly connected to the baffle 7.

[0027] Among them, the first filter screen and the second filter screen form a T shape, which is used to filter the lubricating oil in multiple directions. The filtered iron filings fall into the baffle 7, and the magnet block 8 is used to magnetically attract the iron filings, thereby fixing the iron filings and preventing the iron filings from wandering with the lubricating oil.

[0028] The above is only a preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent replacements or changes, and should be covered within the protection scope of the present utility model.

Claims

1. A high-strength and high-oil tightness gear box body, characterized in that: It includes a gearbox body (1), and at least one first diversion groove (4) and a second diversion groove (5) are formed on the inner side wall of the gearbox body (1); a lubricating oil injection port is formed on the side wall of the gearbox body (1), a cover plate (2) is installed at the lubricating oil injection port of the gearbox body (1), a filtering component is fixedly installed on one side wall of the cover plate (2), and the filtering component is located inside the gearbox body (1). The filtering component includes a filter screen (6) and a magnet block (8), and the magnet block (8) is fixedly connected to the filter screen (6).

2. The high-strength and high-oil-tightness gear housing according to claim 1, wherein: Both ends of the cover plate (2) are threadedly connected with bolts (3), and the two bolts (3) are threadedly connected with the gearbox body (1).

3. The high-strength and high-oil-tightness gear housing according to claim 1, characterized in that: The filtering component further includes a baffle (7) in the shape of a mouth-shaped frame. The filter screen (6) includes a first filter screen and a second filter screen. One end edge of the first filter screen is fixedly connected to the cover plate (2), the second filter screen covers the baffle (7), and the other end edge of the first filter screen is fixedly connected to the baffle (7) and the second filter screen respectively.

4. The high-strength and high-oil-tightness gear housing according to claim 3, wherein: The magnet block (8) is fixedly connected to the baffle (7).

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