Respirator for gearbox of high-speed rail

Abstract

The utility model discloses a high-speed rail gear box respirator, which belongs to the technical field of gear breathing boxes, and comprises a valve body, the bottom of the valve body is provided with a thread structure, a breather pipe is fixedly connected in the valve body, the breather pipe is provided with a first vent hole, a second vent hole and a third vent hole, and the first vent hole, the second vent hole and the third vent hole are fixedly connected in the valve body. By means of the first-stage filter and the second-stage filter, it can be guaranteed that internal oil liquid does not run outwards along with gear oil, it can be guaranteed that external air does not enter a gear box, and therefore the cleanliness in the gear box is not affected; a first vent hole, a second vent hole and a third vent hole are formed and can be suitable for air circulation under different operation conditions of the high-speed rail, the practicability of the device is improved, then the device is conveniently installed through a thread structure, and the sealing performance of the device in the using process is improved through a circular ring and a sealing ring in a second groove.

Description

Technical Field

[0001] The utility model relates to the technical field of gear breathing boxes, in particular to a high-speed rail gear box breather. Background Art

[0002] Since the domestic gearbox breather cannot meet the high speed, high vibration impact, instantaneous large flow and other requirements of high-speed rail gearboxes, a breather that meets the needs of A380 EMUs, CR400\CR450 high-speed rail gearboxes was designed. Utility Model Content

[0003] The utility model solves the technical problems in the above-mentioned background technology and provides a high-speed railway gearbox respirator.

[0004] In order to solve the above technical problems, the technical solution provided by the utility model is:

[0005] A high-speed rail gearbox respirator comprises a valve body, a threaded structure is provided at the bottom of the valve body, a vent pipe is fixedly connected to the valve body, a vent hole 1 is provided on the vent pipe, a vent hole 2 is provided on the vent pipe, a vent hole 3 is provided on the vent pipe, a rain cap is slidably connected to the top of the valve body, a vent hole 4 is provided on the rain cap, a primary filter is fixedly connected to the valve body, a mounting ring is fixedly connected to the valve body, a secondary filter is threadedly connected to the mounting ring, and a grip rod is fixedly connected to the secondary filter.

[0006] Preferably, the bottom of the rain cap is fixedly connected to a vertical rod, one end of the vertical rod is provided with a groove, a round rod is fixedly connected to the groove, the round rod is slidably connected to a limiting block, the round rod is sleeved with a spring, one end of the spring is fixedly connected to the groove, the other end of the spring is fixedly connected to the limiting block, the valve body is fixedly connected to a limiting plate, and the vertical rod slides in the limiting plate.

[0007] Preferably, a ring is provided on the valve body, the shape of the ring is circular, the ring is located above the threaded structure, a groove 2 is provided at the bottom of the ring, and a sealing ring is provided in the groove 2.

[0008] Preferably, the vent hole one, vent hole two, and vent hole three are respectively provided in two groups and are symmetrically arranged, the vent hole three is located above the vent hole two, the vent hole two is located above the vent hole one, and the vent hole three is located below the threaded structure.

[0009] Preferably, the ventilation holes are provided in four groups and are evenly distributed around the rain cap, and the secondary filter is located above the primary filter.

[0010] Preferably, the vertical rods are provided in four groups, and each group of the grooves 1 is respectively provided with two groups of the round rods, and the lengths of the round rods and the limit blocks are less than the length of the groove 1.

[0011] Preferably, a sealing ring is provided at the joint between the rain cap and the valve body, the vent hole 4 is located above the valve body, and the limit block is located below the limit plate.

[0012] With the above structure, the utility model has the following advantages:

[0013] 1. The utility model can ensure that the internal oil does not run out with the gear oil and the external air does not enter the gear box to affect the cleanliness of the gear box through the primary filter and the secondary filter, and is provided with vent hole 1, vent hole 2, and vent hole 3, which can be suitable for the air circulation of high-speed rail under different operating conditions, thereby enhancing the practicality of the device. Then, the device is convenient to install through the threaded structure, and the sealing ring in the ring and the groove 2 is used to enhance the sealing of the device when in use.

[0014] 2. The utility model can discharge the gas generated by the increase in internal temperature of the gear box during operation through the air vent four, and can also inhale external gas through the air vent four after the internal temperature drops to maintain internal air pressure balance, and can effectively prevent water through the rain cap. The rain cap can be separated from the valve body by pressing the limit block, and then the use of the primary filter and the secondary filter in the valve body can be observed and replaced to avoid excessive impurities remaining and affecting operation.

[0015] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] 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 or technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a structural schematic diagram of a high-speed rail gearbox respirator of the utility model;

[0018] Figure 2 This is a cross-sectional view of a high-speed rail gearbox respirator of the utility model;

[0019] Figure 3 yes Figure 1A in the enlarged view;

[0020] Figure 4 yes Figure 2 The enlarged view of point B in the figure;

[0021] Figure 5 yes Figure 2 Enlarged view of point C in the figure.

[0022] As shown in the figure: 1. Valve body; 2. Threaded structure; 3. Vent pipe; 4. Vent hole 1; 5. Vent hole 2; 6. Vent hole 3; 7. Rain cap; 8. Vent hole 4; 9. Primary filter; 10. Mounting ring; 11. Secondary filter; 12. Grip; 13. Vertical rod; 14. Groove 1; 15. Round rod; 16. Limit block; 17. Spring; 18. Limit plate; 19. Ring; 20. Groove 2. Specific implementation plan

[0023] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0024] In the description of this application, 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0025] The utility model is further described in detail below in conjunction with the full text:

[0026] Combined with Figures 1 to 5A high-speed rail gearbox respirator comprises a valve body 1, a threaded structure 2 is provided at the bottom of the valve body 1, a vent pipe 3 is fixedly connected inside the valve body 1, a vent hole 1 4 is provided on the vent pipe 3, a vent hole 2 5 is provided on the vent pipe 3, a vent hole 3 6 is provided on the vent pipe 3, a rain cap 7 is slidably connected to the top of the valve body 1, a vent hole 4 8 is provided on the rain cap 7, a primary filter 9 is fixedly connected inside the valve body 1, a mounting ring 10 is fixedly connected inside the valve body 1, a secondary filter 11 is threadedly connected to the mounting ring 10, and a secondary filter 11 is threadedly connected to the secondary filter 11 A grip rod 12 is fixedly connected, and the primary filter 9 and the secondary filter 11 can ensure that the internal oil does not run out with the gear oil and the external air does not enter the gear box to affect the cleanliness of the gear box. Vent hole 1 4, vent hole 2 5, vent hole 3 6 are provided, which can be suitable for air circulation under different operating conditions of high-speed rail, thereby enhancing the practicality of the device. Then, the threaded structure 2 is used to facilitate the installation of the device, and the sealing ring 19 and the sealing ring in the groove 20 enhances the sealing performance of the device when in use.

[0027] Among them, a vertical rod 13 is fixedly connected to the bottom of the rain cap 7, a groove 14 is provided at one end of the vertical rod 13, a round rod 15 is fixedly connected in the groove 1, a limited block 16 is slidably connected to the round rod 15, a spring 17 is sleeved on the round rod 15, one end of the spring 17 is fixedly connected in the groove 14, the other end of the spring 17 is fixedly connected to the limit block 16, a limited plate 18 is fixedly connected to the valve body 1, the vertical rod 13 slides in the limit plate 18, a ring 19 is provided on the valve body 1, the shape of the ring 19 is circular, the ring 19 is located above the threaded structure 2, a groove 20 is provided at the bottom of the ring 19, a sealing ring is provided in the groove 20, the vent 1 4, the vent 2 5, and the vent 3 6 are respectively provided in two groups and are symmetrically arranged, the vent 3 6 is located above the vent 2 5, the vent 2 5 is located above the vent 1 4, the vent 3 6 is located below the threaded structure 2, and the vent There are four groups of air holes 8 evenly distributed around the rain cap 7, the secondary filter 11 is located above the primary filter 9, there are four groups of vertical rods 13, and each group of grooves 14 is respectively provided with two groups of round rods 15. The length of the round rods 15 and the limit block 16 is less than the length of the groove 14. A sealing ring is provided at the joint between the rain cap 7 and the valve body 1, the air vents 48 are located above the valve body 1, and the limit block 16 is located below the limit plate 18. The gas generated by the internal temperature increase of the gear box during operation can be discharged through the air vents 48, and the external gas can be inhaled through the air vents 48 after the internal temperature is reduced to maintain the internal air pressure balance, and the rain cap 7 can be effectively waterproofed. The rain cap 7 can be separated from the valve body 1 by pressing the limit block 16, and then the use of the primary filter 9 and the secondary filter 11 in the valve body 1 is observed and replaced to avoid excessive impurities remaining and affecting the operation.

[0028] Working principle of the utility model: when in use, first rotate the device to install it in the gear box through the threaded structure 2, at this time, the groove 20 in the ring 19 will be stuck in the connecting pipe, and the sealing performance will be enhanced by the sealing ring in the groove 20. When the gear box is running, the internal temperature will rise, the internal air will expand, and the lubricating oil will evaporate. At this time, the evaporated oil mist will be discharged into the ventilation pipe 3 through the vent hole 1 4, the vent hole 2 5, and the vent hole 3 6, and then filtered by the primary filter 9 and the secondary filter 11 and discharged into the valve body 1 to prevent the polluted gas from being discharged, and discharged through the vent hole 4 8 on the rainproof cap 7 to ensure the stability of the pressure in the gear box. When the internal pressure is small, it will pass through the vent hole 4 on the rainproof cap 7. The air hole 4 8 inhales external air and filters it through the primary filter 9 and the secondary filter 11 to prevent external impurities from entering. After using it for a period of time, observe the residual impurities on the primary filter 9 and the secondary filter 11, press the four sets of limit blocks 16 inward at the same time, slide on the round rod 15 and the groove 14 and compress the spring 17, then the vertical rod 13 can be slid upward and removed from the limit plate 18, thereby opening the rain cap 7, and then observe the condition of the secondary filter 11, then rotate the grip 12 to drive the secondary filter 11 to rotate on the mounting ring 10, then the secondary filter 11 can be taken out, observe the condition of the primary filter 9, and determine whether it needs to be replaced.

[0029] The above describes the utility model and its implementation methods, which is not restrictive. What is shown in the full text is only one of the implementation methods of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it, without departing from the purpose of the invention of the utility model, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the utility model.

Claims

1. A high-speed rail gearbox breather, comprising a valve body (1), characterized in that: The bottom of the valve body (1) is provided with a threaded structure (2); a vent pipe (3) is fixedly connected inside the valve body (1); a vent hole 1 (4) is provided on the vent pipe (3); a vent hole 2 (5) is provided on the vent pipe (3); a vent hole 3 (6) is provided on the vent pipe (3); a rain cap (7) is slidably connected to the top of the valve body (1); a vent hole 4 (8) is provided on the rain cap (7); a primary filter (9) is fixedly connected inside the valve body (1); a mounting ring (10) is fixedly connected inside the valve body (1); a secondary filter (11) is threadedly connected to the mounting ring (10); and a gripping rod (12) is fixedly connected to the secondary filter (11).

2. A high-speed railway gearbox respirator according to claim 1, characterized in that: The bottom of the rainproof cap (7) is fixedly connected to a vertical rod (13), one end of which is provided with a groove (14), a round rod (15) is fixedly connected to the groove (14), a limit block (16) is slidably connected to the round rod (15), a spring (17) is sleeved on the round rod (15), one end of the spring (17) is fixedly connected to the groove (14), the other end of the spring (17) is fixedly connected to the limit block (16), a limit plate (18) is fixedly connected to the valve body (1), and the vertical rod (13) slides in the limit plate (18).

3. A high-speed railway gearbox respirator according to claim 2, characterized in that: The valve body (1) is provided with a circular ring (19), the shape of the circular ring (19) is circular, the circular ring (19) is located above the threaded structure (2), the bottom of the circular ring (19) is provided with a second groove (20), and a sealing ring is provided in the second groove (20).

4. A high-speed railway gearbox respirator according to claim 3, characterized in that: The ventilation hole one (4), the ventilation hole two (5), and the ventilation hole three (6) are respectively provided in two groups and are symmetrically arranged. The ventilation hole three (6) is located above the ventilation hole two (5), the ventilation hole two (5) is located above the ventilation hole one (4), and the ventilation hole three (6) is located below the threaded structure (2).

5. A high-speed railway gearbox respirator according to claim 4, characterized in that: The ventilation holes (8) are provided in four groups and are evenly distributed around the rainproof cap (7), and the secondary filter (11) is located above the primary filter (9).

6. A high-speed railway gearbox respirator according to claim 5, characterized in that: The vertical rods (13) are provided with four groups, and each group of the grooves (14) is provided with two groups of round rods (15), and the lengths of the round rods (15) and the limit blocks (16) are less than the length of the grooves (14).

7. A high-speed railway gearbox respirator according to claim 6, characterized in that: A sealing ring is provided at the joint between the rainproof cap (7) and the valve body (1), the vent hole 4 (8) is located above the valve body (1), and the limit block (16) is located below the limit plate (18).

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