High and low speed switching input worm gear case

Abstract

The invention relates to the technical field of worm gear cases, in particular to a high-low speed switching input worm gear case which comprises a case body, a worm gear and a worm which are meshed with each other are arranged in the case body, a support is fixedly connected to one side of the case body, and a lubricating oil conveying assembly which inputs lubricating oil into the case body and outputs heat from the case body is installed at the top of the support. The lubricating oil conveying assembly comprises a water tank fixedly connected with the top of the support, an oil storage tank is fixedly connected to the bottom of the inner side of the water tank, an oil filling pipe with one end movably extending out of the water tank is arranged at the bottom of the oil storage tank, and a plurality of inclined pipes communicate with the position, close to the meshing position of the worm gear and the worm, of the tank. The problems that according to an existing worm gear case, the liquid level height of lubricating oil in the worm gear case can only be maintained by continuously supplementing the lubricating oil, the temperature of the lubricating oil in the worm gear case is difficult to reduce, the cooling effect on a worm gear and a worm is easily reduced after the temperature of the lubricating oil rises, and the worm gear and the worm are overheated are solved.

Description

Technical Field

[0001] The invention relates to the technical field of worm gear boxes, in particular to a high- and low-speed switching input worm gear box. Background Art

[0002] In order to reduce the wear between the turbine and the worm and to dissipate heat for both, it is necessary to inject lubricating oil of an appropriate height into the housing. If the liquid level is too high and the turbine is immersed too much, when the turbine rotates in the lubricating oil, the resistance of the lubricating oil to the turbine will also increase accordingly. After searching, a Chinese invention patent with application number CN202310223212.5 discloses a low-wear worm gear reduction box, which can ensure that there is always a suitable lubricating oil level in the recessed area, so that the liquid level is not too high and causes greater resistance to the turbine; and the oil can be stored in the oil storage chamber as much as possible in advance, so there is no need to add lubricating oil frequently.

[0003] The above device can only add lubricating oil to the worm gear box. Although it can maintain the lubrication of the worm wheel and the worm, the heat in the lubricating oil always remains inside the worm gear box. As the worm wheel and the worm continue to rub, the heat generated by the friction will continue to be transferred to the lubricating oil, causing the heat of the lubricating oil to continue to increase, resulting in a decrease in the cooling effect of the lubricating oil on the worm wheel and the worm, and the worm wheel and the worm are prone to overheating. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a high- and low-speed switching input worm gear box, which solves the problem that the existing worm gear box can only maintain the liquid level of the lubricating oil inside the worm gear box by continuously replenishing the lubricating oil, but it is difficult to reduce the temperature of the lubricating oil inside the worm gear box, which easily leads to a decrease in the cooling effect of the worm wheel and worm after the lubricating oil temperature rises, resulting in overheating of the worm wheel and worm.

[0005] To achieve the above object, the present invention provides the following technical solution: a high-low speed switching input worm gear box, comprising a box body, wherein a worm wheel and a worm that mesh with each other are arranged inside the box body, a bracket is fixedly connected to one side of the box body, and a lubricating oil conveying component for inputting lubricating oil into the box body and outputting heat from the box body is installed on the top of the bracket;

[0006] The lubricating oil delivery assembly includes a water tank fixedly connected to the top of the bracket, an oil storage tank is fixedly connected to the inner bottom of the water tank, a refueling pipe with one end movably extending to the outside of the water tank is provided at the bottom of the oil storage tank, a plurality of inclined pipes are connected to the box body near the meshing point of the worm gear and the worm, one end of the refueling pipe is movably extended to the inside of the inclined pipe, and a sealing ring is provided at the connection between the refueling pipe and the inclined pipe.

[0007] Preferably, one side of the water tank is connected to a drain pipe, a spray assembly for spraying water to the upper half of the oil storage tank is installed on the top of the water tank, and guide assemblies for guiding the direction of water flow are installed on both sides of the oil storage tank.

[0008] Preferably, the spray assembly includes a transfer box fixedly connected to the top of the water tank, the bottom of the transfer box is connected to a plurality of inclined spray pipes, one end of the spray pipe extends to the inside of the water tank, and the top of the transfer box is connected to a water inlet pipe.

[0009] Preferably, the guide assembly includes an upper arc plate fixedly connected to the oil storage tank, the top of the upper arc plate is fixedly connected to an inclined plate, the bottom of the inclined plate is fixedly connected to a protrusion corresponding to the spray pipe, and the protrusion is a semi-cone with the vertex facing downward.

[0010] Preferably, one side of the oil storage tank is connected to an extension box, one end of the extension box extends to the outside of the water tank, an opening is provided on the top of the extension box, and a cover plate covering the opening is slidably connected to the top of the extension box.

[0011] Preferably, the length of the oil storage tank is smaller than the length of the inner cavity of the water tank, and a plurality of support columns for supporting the oil storage tank are provided at the inner bottom of the water tank.

[0012] Preferably, flanges are installed at the ends of the drainage pipe and the water inlet pipe away from the water tank, and a sealing plug is installed at the end of the inclined pipe away from the box body.

[0013] Preferably, a gear box is fixedly connected to one side of the box body, and a coaxial large gear and a small gear are rotatably connected to one side of the inner wall of the gear box. A low-speed input gear and a high-speed input gear that mesh with the large gear and the small gear respectively are installed inside the gear box, and the rotating shafts of the low-speed input gear and the high-speed input gear are movably extended to the outside of the gear box.

[0014] Preferably, the box body includes a lower box body that wraps the lower half of the worm and the worm wheel, and an upper box body that wraps the upper half of the worm wheel. The lower box body and the upper box body are fixedly connected to opposite sides with a cross frame, and a plurality of mounting holes are opened on the top of the cross frame.

[0015] Preferably, one side of the box body is connected to a circular ring coaxial with the worm gear, the circular ring includes an upper half and a lower half respectively fixed to the lower box body and the upper box body, a baffle is fixedly connected to the side of the lower box body and the upper box body away from the box body, a plurality of mounting holes are provided on the side of the circular ring and the baffle away from the box body, and the rotating shaft of the worm gear movably passes through the baffle.

[0016] Compared with the prior art, the present invention provides a high-low speed switching input worm gear box, which has the following

[0017] Beneficial effects:

[0018] 1. The lubricating oil delivery assembly can not only maintain the liquid level of the lubricating oil inside the worm gear box by continuously replenishing the lubricating oil, but also discharge the lubricating oil with a higher temperature inside the worm gear box and replenish the lubricating oil with a lower temperature into the worm gear box, thereby reducing the temperature of the lubricating oil inside the worm gear box and preventing the worm gear and worm from overheating due to the decrease in the cooling effect of the lubricating oil on the worm wheel and worm after the lubricating oil temperature rises.

[0019] 2. The spray assembly can reduce the temperature of the lubricating oil inside the oil storage tank, making it easier for the lubricating oil with a lower temperature to enter the box to cool the worm gear and worm. At the same time, the heat of the lubricating oil can be used to increase the water temperature, thereby improving the efficiency of using the heat of the lubricating oil.

[0020] 3. By setting up the extension box, the height of the lubricating oil in the oil storage tank and the box body can be easily observed, and the lubricating oil can be easily added to the oil storage tank and the box body, so that the lubricating oil in the box body is always at a suitable height.

[0021] 4. By setting the inclined tube and the sealing plug, the oil storage tank with different numbers of filling tubes can be selected according to the needs, so as to improve the cooling effect of the worm gear box with large friction between the worm wheel and the worm.

[0022] 5. Through the provided guide assembly, the water flow can be guided to impact the upper area of ​​the oil storage tank with higher temperature, and the upper area of ​​the oil storage tank with higher temperature can be cooled preferentially, so that the temperature of the lubricating oil in the upper area of ​​the oil storage tank can be lowered to form a convection circulation with the lubricating oil inside the tank body, thereby preventing the water from directly cooling the lubricating oil at the bottom of the oil storage tank, resulting in the lubricating oil at the top of the oil storage tank being too high to circulate by convection. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0024] Figure 1 It is a schematic structural diagram of the overall front side of the present invention;

[0025] Figure 2 It is a schematic structural diagram of the overall back side of the present invention;

[0026] Figure 3 It is a structural schematic diagram of the lubricating oil delivery assembly of the present invention;

[0027] Figure 4 is a partial cutaway view of the lubricating oil delivery assembly of the present invention;

[0028] Figure 5 It is a schematic diagram of the structure of the spray assembly and the oil storage tank of the present invention;

[0029] Figure 6 is a cross-sectional view of the spray assembly and the oil storage tank of the present invention;

[0030] Figure 7 It is a schematic diagram of the structure of the flow guide assembly of the present invention;

[0031] Figure 8 It is a partial cutaway view of the box of the present invention;

[0032] Fig. 9 It is a schematic diagram of the structure of the gear box and the worm gear of the present invention.

[0033] In the figure: 1. box body; 101. lower box body; 102. upper box body; 103. cross frame; 2. worm gear; 3. worm; 4. bracket; 5. lubricating oil delivery assembly; 51. water tank; 52. oil storage tank; 53. refueling pipe; 54. tilting pipe; 55. sealing ring; 6. drain pipe; 7. spray assembly; 71. transfer box; 72. spray pipe; 73. water inlet pipe; 8. guide assembly; 81. upper arc plate; 82. tilting plate; 83. bump; 9. extension box; 10. cover plate; 11. support column; 12. flange; 13. sealing plug; 14. gear box; 15. large gear; 16. small gear; 17. low-speed input gear; 18. high-speed input gear; 19. ring; 20. baffle. DETAILED DESCRIPTION

[0034] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0035] Embodiment 1

[0036] In order to bring out the heat inside the worm gear box while replenishing the lubricating oil inside the worm gear box 5, the temperature of the lubricating oil inside the worm gear box is kept at a low range, so as to better cool the worm wheel and worm. Figure 1-Figure 5As one embodiment of the present invention, a high-low speed switching input worm gear box is proposed, including a box body 1 in which a worm wheel 2 and a worm 3 meshing with each other are arranged, a bracket 4 is fixedly connected to one side of the box body 1, a lubricating oil delivery component 5 for inputting lubricating oil to the box body 1 and outputting heat from the box body 1 is installed on the top of the bracket 4, and the lubricating oil delivery component 5 includes a water tank 51 fixedly connected to the top of the bracket 4, an oil storage tank 52 is fixedly connected to the inner bottom of the water tank 51, and a refueling pipe with one end movably extending to the outside of the water tank 51 is provided at the bottom of the oil storage tank 52 53, the housing 1 is connected with a plurality of inclined tubes 54 near the meshing place of the worm wheel 2 and the worm 3, one end of the refueling tube 53 is movably extended to the inside of the inclined tube 54, and a sealing ring 55 is sleeved at the joint of the refueling tube 53 and the inclined tube 54. When in use, the oil storage tank 52 stores extra lubricating oil for replenishing lubricating oil into the housing 1 of the worm gear box, and the height of the oil storage tank 52 is reasonably arranged. The oil storage tank 52 is fixed near the middle area of ​​the worm wheel 2, and the bottom end of the refueling tube 53 is connected to the joint of the worm wheel 2 and the worm 3. Two principles are used here:

[0037] First, by utilizing the communicating vessel principle, the liquid level of the lubricating oil in the oil storage tank 52 is the same as the height of the lubricating oil in the casing 1. By utilizing the fact that the oil storage tank 52 is relatively wide and the widths of both sides of the worm gear 2 in the casing 1 are relatively narrow, when the lubricating oil in the casing 1 is consumed and causes the liquid level to drop, the lubricating oil in the oil storage tank 52 is replenished into the casing 1 through the refueling pipe 53. After the lubricating oil in the wider oil storage tank 52 is reduced, the liquid level drops to a smaller height, and the height of the lubricating oil in the casing 1 can be maintained to a large extent. Moreover, after the lubricating oil level in the oil storage tank 52 drops significantly, the lubricating oil can be replenished into the oil storage tank 52 to maintain the amount of lubricating oil in the oil storage tank 52, so that the oil storage tank 52 can always replenish the lubricating oil into the casing 1, and the lubricating oil level in the casing 1 is always maintained at a reasonable position.

[0038] Secondly, the principle of solar water heaters is utilized, specifically the principle that the density of lubricating oil at a low temperature is greater than that of lubricating oil at a high temperature. The hot lubricating oil rises and the cold lubricating oil sinks, forming a natural convection. Therefore, the heat generated by the friction between the worm gear 2 and the worm 3 increases the temperature of the lubricating oil inside the housing 1, causing the lubricating oil with a higher temperature inside the housing 1 to flow along the filling pipe 53 to the oil storage tank 52, while the lubricating oil with a lower temperature inside the oil storage tank 52 is replenished into the housing 1 through the filling pipe 53. The heat of the lubricating oil inside the oil storage tank 52 is naturally dissipated, causing the heated lubricating oil inside the worm gear box to cool down inside the oil storage tank 52, making it convenient to replenish it into the housing 1 again after cooling down.

[0039] In summary, the lubricating oil delivery assembly 5 can not only maintain the liquid level of the lubricating oil inside the worm gear box by continuously replenishing the lubricating oil, but also discharge the lubricating oil with a higher temperature inside the worm gear box and replenish the lubricating oil with a lower temperature into the worm gear box, thereby reducing the temperature of the lubricating oil inside the worm gear box and preventing the worm gear and worm from overheating due to the decrease in the cooling effect of the lubricating oil on the worm wheel and worm after the temperature of the lubricating oil increases.

[0040] In order to improve the utilization efficiency of heat in lubricating oil, refer to Figure 4 and Figure 5 , one side of the water tank 51 is connected with a drain pipe 6, a spray assembly 7 for spraying water to the upper half of the oil storage tank 52 is installed on the top of the water tank 51, and flow guide assemblies 8 for guiding the water flow direction are installed on both sides of the oil storage tank 52. The spray assembly 7 includes a transfer box 71 fixedly connected to the top of the water tank 51, and the bottom of the transfer box 71 is connected with a plurality of inclined spray pipes 72, one end of the spray pipe 72 extends to the inside of the water tank 51, and the top of the transfer box 71 is connected with a water inlet pipe 73. When in use, the lubricating oil heated by the heat generated by the friction between the worm wheel 2 and the worm 3 in the box body 1 moves to the inside of the oil storage tank 52, and the staff connects the water pipe to the water inlet pipe 73. 3. Water enters the transfer box 71 through the water inlet pipe 73, and then is sprayed toward the entire length direction of the oil storage tank 52 through the spray pipe 72. The lubricating oil heated by the worm wheel 2 and the worm 3 in the box body 1 enters the oil storage tank 52, raising the temperature of the oil storage tank 52. After the water contacts the oil storage tank 52, it absorbs the heat inside the oil storage tank 52, lowering the temperature of the oil storage tank 52 and the lubricating oil inside the oil storage tank 52, thereby lowering the temperature of the lubricating oil inside the oil storage tank 52, making it easier for the lubricating oil with a lower temperature to enter the box body 1 to cool the worm wheel 2 and the worm 3. At the same time, the heat of the lubricating oil can be used to raise the water temperature, thereby improving the efficiency of using the heat of the lubricating oil.

[0041] Embodiment 2

[0042] In order to facilitate observation of the liquid level of the lubricating oil in the oil storage tank 52 and the housing 1, and to facilitate replenishment of the lubricating oil in the oil storage tank 52 and the housing 1 so that the lubricating oil in the housing 1 is always at a suitable height, refer to Figure 1-Figure 6On the basis of the first embodiment, one side of the oil storage tank 52 is connected to an extension box 9, one end of the extension box 9 extends to the outside of the water tank 51, and an opening is opened on the top of the extension box 9. A cover plate 10 covering the opening is slidably connected to the top of the extension box 9. When in use, the cover plate 10 blocks the opening of the extension box 9. When it is necessary to observe the height of the lubricating oil inside the oil storage tank 52 and the box body 1, it is only necessary to open the cover plate 10 and then check the height of the lubricating oil inside the extension box 9. Since the extension box 9, the oil storage tank 52 and the box body 1 are a communicating vessel, the liquid level of the lubricating oil inside them is The height of the lubricating oil in the extension box 9 is the same, so the height of the lubricating oil in the box body 1 can be directly judged by observing the height of the lubricating oil in the extension box 9. When the lubricating oil needs to be added to the box body 1, it is only necessary to directly add the lubricating oil to the extension box 9. When the height of the lubricating oil in the extension box 9 reaches a suitable height, the cover plate 10 is closed to block the opening on the top of the extension box 9. The height of the lubricating oil in the oil storage tank 52 and the box body 1 can be easily observed, and the lubricating oil in the oil storage tank 52 and the box body 1 can be easily added, so that the lubricating oil in the box body 1 is always at a suitable height.

[0043] Reference Figure 3 and Figure 5 The ends of the drain pipe 6 and the water inlet pipe 73 away from the water tank 51 are both installed with flanges 12, and the ends of the inclined pipe 54 away from the box body 1 are installed with sealing plugs 13. The oil storage tank 52 with different numbers of filling pipes 53 can be selected according to actual needs. For the worm gear box with large friction between the worm 2 and the worm 3 and high heat generated during operation, an oil storage tank 52 with a large number of filling pipes 53 can be selected, and the bottoms of the filling pipes 53 are inserted into the inclined pipes 54, and a sealing ring 55 is put on the joints of the filling pipes 53 and the inclined pipes 54 to prevent lubricating oil leakage. Since the lubricating oil can be discharged from the multiple inclined pipes 53 after the temperature inside the box body 1 increases, 4 and the filling pipe 53 move to the oil storage tank 52, which speeds up the discharge of the internal heat of the worm gear box along with the lubricating oil, and can more significantly reduce the temperature of the worm wheel 2 and the worm 3 after the friction; for the worm gear box with small friction between the worm wheel 2 and the worm 3 and less heat generated during the operation, an oil storage tank 52 with a small number of filling pipes 53 can be selected, and the filling pipes 53 can be inserted into some of the inclined pipes 54 therein, and the inclined pipes 54 that are not connected to the filling pipes 53 are blocked with sealing plugs 13. The oil storage tank 52 with different numbers of filling pipes 53 can be selected according to the needs, so as to improve the cooling effect of the worm gear box with a large friction between the worm wheel 2 and the worm 3.

[0044] Embodiment 3

[0045] In order to improve the cooling effect of the oil storage tank 52, refer to Figure 1-Figure 7On the basis of the first embodiment, the flow guide assembly 8 includes an upper arc plate 81 fixedly connected to the oil storage tank 52, the top of the upper arc plate 81 is fixedly connected to an inclined plate 82, the bottom of the inclined plate 82 is fixedly connected to a convex block 83 corresponding to the spray pipe 72, the convex block 83 is a semi-cone with the vertex facing downward, the length of the oil storage tank 52 is less than the length of the inner cavity of the water tank 51, and a plurality of support columns 11 for supporting the oil storage tank 52 are provided at the bottom of the inner side of the water tank 51. When in use, the water sprayed from the spray pipe 72 flows to the upper half of the oil storage tank 52, especially to the top of the oil storage tank 52, and then flows to both sides along the oil storage tank 52. When the water flows to the upper arc plate 81, the water is blocked by the upper arc plate 81, and then changes direction by the upper arc plate 81 and the inclined plate 82 and flows to the top of the oil storage tank 52 again. In this process, the water flow is changed in direction by the convex block 83 The water on the upper arc plate 81 and the inclined plate 82 gradually increases and flows away from the two ends of the upper arc plate 81 and directly falls to the inner bottom of the water tank 51. Since the density of the lubricating oil with high temperature is low, the lubricating oil with high temperature is concentrated at the high part of the oil storage tank 52, so that the temperature of the upper half of the oil storage tank 52 is relatively higher, and the water flow can be guided to impact the upper half of the oil storage tank 52 with higher temperature, and the upper half of the oil storage tank 52 with higher temperature is preferentially cooled, so that the temperature of the lubricating oil in the upper half of the oil storage tank 52 drops and can form a convection circulation with the lubricating oil inside the box body 1, so as to prevent the water from directly cooling the lubricating oil at the bottom of the oil storage tank 52, resulting in the high temperature of the lubricating oil at the top of the oil storage tank 52 and unable to convectively circulate.

[0046] Embodiment 4

[0047] In order to achieve the purpose of selecting different reduction ratios according to different needs, refer to Figure 1-Figure 9On the basis of the first embodiment, a gear box 14 is fixedly connected to one side of the housing 1, and a coaxial large gear 15 and a small gear 16 are rotatably connected to one side of the inner wall of the gear box 14. A low-speed input gear 17 and a high-speed input gear 18 respectively meshing with the large gear 15 and the small gear 16 are installed inside the gear box 14, and the rotating shafts of the low-speed input gear 17 and the high-speed input gear 18 are movably extended to the outside of the gear box 14. The housing 1 includes a lower housing 101 that wraps the lower half of the worm 3 and the worm wheel 2, and an upper housing 102 that wraps the upper half of the worm wheel 2. A horizontal frame 103 is fixedly connected to the opposite side of the lower housing 101 and the upper housing 102, and a plurality of mounting holes are opened on the top of the horizontal frame 103. A circular ring 19 coaxial with the worm wheel 2 is connected to one side of the housing 1, and the circular ring 19 includes a plurality of mounting holes respectively meshing with the large gear 15 and the small gear 16. The upper and lower halves of the lower box body 101 and the upper box body 102 are fixed, and a baffle 20 is fixedly connected to the side of the lower box body 101 and the upper box body 102 away from the box body 1. A plurality of mounting holes are provided on the side of the ring 19 and the baffle 20 away from the box body 1. The rotating shaft of the worm gear 2 movably passes through the baffle 20. The deceleration ratio of the worm gear box can be controlled by selectively driving the low-speed input gear 17 or the high-speed input gear 18. When a larger degree of deceleration is required, it only needs to connect the input end to the low-speed input gear 17 to reduce the rotation speed to a larger extent; when a smaller degree of deceleration is required, it only needs to connect the input end to the high-speed input gear 18 to reduce the rotation speed to a smaller extent. The detachable structure of the box body 1 facilitates the installation and maintenance of the worm gear box.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-low speed switch input worm gear box, comprising a box body (1), wherein a worm wheel (2) and a worm (3) meshing with each other are arranged inside the box body (1), characterized in that: A bracket (4) is fixedly connected to one side of the box body (1), and a lubricating oil delivery component (5) for inputting lubricating oil into the box body (1) and outputting heat from the box body (1) is installed on the top of the bracket (4); The lubricating oil delivery assembly (5) comprises a water tank (51) fixedly connected to the top of the bracket (4); an oil storage tank (52) is fixedly connected to the inner bottom of the water tank (51); a refueling pipe (53) having one end movably extending to the outside of the water tank (51) is provided at the bottom of the oil storage tank (52); a plurality of inclined pipes (54) are connected to the casing (1) near the meshing position of the worm wheel (2) and the worm (3); one end of the refueling pipe (53) movably extends to the inside of the inclined pipe (54); and a sealing ring (55) is sleeved at the connection between the refueling pipe (53) and the inclined pipe (54).

2. A high-low speed switching input worm gear box according to claim 1, characterized in that: One side of the water tank (51) is connected to a drainage pipe (6), the top of the water tank (51) is provided with a spray assembly (7) for spraying water onto the upper half of the oil storage tank (52), and both sides of the oil storage tank (52) are provided with flow guide assemblies (8) for guiding the direction of water flow.

3. A high-low speed switching input worm gear box according to claim 2, characterized in that: The spray assembly (7) comprises a transfer box (71) fixedly connected to the top of the water tank (51); the bottom of the transfer box (71) is connected to a plurality of inclined spray pipes (72); one end of the spray pipe (72) extends into the interior of the water tank (51); and the top of the transfer box (71) is connected to a water inlet pipe (73).

4. A high-low speed switching input worm gear box according to claim 3, characterized in that: The flow guide assembly (8) comprises an upper arc plate (81) fixedly connected to the oil storage tank (52); the top of the upper arc plate (81) is fixedly connected to an inclined plate (82); the bottom of the inclined plate (82) is fixedly connected to a convex block (83) corresponding to the spray pipe (72); the convex block (83) is a semi-cone with its apex facing downward.

5. The high-low speed switching input worm gear box according to claim 1, characterized in that: One side of the oil storage tank (52) is connected to an extension box (9), one end of the extension box (9) extends to the outside of the water tank (51), an opening is provided on the top of the extension box (9), and a cover plate (10) covering the opening is slidably connected to the top of the extension box (9).

6. The high-low speed switching input worm gear box according to claim 1, characterized in that: The length of the oil storage tank (52) is smaller than the length of the inner cavity of the water tank (51), and a plurality of support columns (11) for supporting the oil storage tank (52) are provided at the inner bottom of the water tank (51).

7. The high-low speed switching input worm gear box according to claim 3, characterized in that: The ends of the drainage pipe (6) and the water inlet pipe (73) away from the water tank (51) are both equipped with flanges (12), and the end of the inclined pipe (54) away from the box body (1) is equipped with a sealing plug (13).

8. The high-low speed switching input worm gear box according to claim 1, characterized in that: A gear box (14) is fixedly connected to one side of the housing (1); a coaxial large gear (15) and a small gear (16) are rotatably connected to one side of the inner wall of the gear box (14); a low-speed input gear (17) and a high-speed input gear (18) are installed inside the gear box (14) and mesh with the large gear (15) and the small gear (16), respectively; and the rotating shafts of the low-speed input gear (17) and the high-speed input gear (18) are movably extended to the outside of the gear box (14).

9. The high-low speed switching input worm gear box according to claim 1, characterized in that: The housing (1) comprises a lower housing (101) enclosing the lower half of the worm (3) and the worm wheel (2), and an upper housing (102) enclosing the upper half of the worm wheel (2), and a transverse frame (103) is fixedly connected to opposite sides of the lower housing (101) and the upper housing (102), and a plurality of mounting holes are provided on the top of the transverse frame (103).

10. A high-low speed switching input worm gear box according to claim 9, characterized in that: One side of the housing (1) is connected to a circular ring (19) coaxial with the worm wheel (2); the circular ring (19) comprises an upper half and a lower half respectively fixed to the lower housing (101) and the upper housing (102); a baffle (20) is fixedly connected to the side of the lower housing (101) and the upper housing (102) away from the housing (1); a plurality of mounting holes are provided on the side of the circular ring (19) and the baffle (20) away from the housing (1); and a rotating shaft of the worm wheel (2) movably passes through the baffle (20).

Images