Bevel gear speed reducer

Abstract

The utility model relates to a bevel gear speed reducer which comprises a shell, a speed reducing mechanism is arranged in the shell, an oil spraying pipe is vertically arranged in the shell, an oil discharging cover is arranged at the upper end of the oil spraying pipe, an oil drainage hole is formed in the side wall of the oil discharging cover, an oil pumping pipe is arranged outside the shell, and an oil conveying pipe is arranged at one end of the oil pumping pipe. By means of the structure, a worker can judge whether the lubricating oil in the shell of the speed reducer needs to be supplemented or not by observing the oil amount in the oil pumping pipe, the structure on the speed reducer does not need to be dismantled, and the work efficiency is improved. Therefore, the inspection method is relatively simple and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of reducers, in particular to a bevel gear reducer. Background Art

[0002] In order to reduce friction and wear and further improve transmission efficiency, lubricating oil needs to be added to the housing of the reducer before it works. However, during long-term use, the lubricating oil inside the reducer will decrease, so the reducer needs to be inspected and maintained regularly. At present, when checking the internal lubricating oil residue of most reducers, it may be necessary to remove part of the housing or cover of the reducer to check the internal lubricating oil residue. The procedure is relatively cumbersome and the restoration of the end cover requires experienced staff to operate to ensure that the lubricating oil will not leak after the end cover is restored. Therefore, relatively speaking, the technical requirements for the staff are also relatively high. Utility Model Content

[0003] The utility model provides a bevel gear reducer, which solves the above problems existing in the use process of the prior art.

[0004] The technical solution of the utility model is achieved as follows: a bevel gear reducer comprises a shell, a reduction mechanism is arranged in the shell, an oil injection pipe is vertically arranged in the shell, an oil drain cover is arranged at the upper end of the oil injection pipe, an oil drain hole is opened on the side wall of the oil drain cover, an oil extraction pipe is arranged outside the shell, an oil delivery pipe is arranged at one end of the oil extraction pipe, one end of the oil delivery pipe is connected with the oil extraction pipe and the other end penetrates the shell and extends into the oil drain cover, and an oil pump is arranged on the oil injection pipe.

[0005] The utility model is further configured as follows: a first piston is slidably arranged in the oil pumping pipe, and an oil pushing rod is arranged on the end surface of the first piston facing away from the oil delivery pipe.

[0006] The utility model is further configured as follows: an oil injection pipe is arranged on the oil extraction pipe, one end of the oil injection pipe is connected with the oil extraction pipe and the other end of the oil injection pipe is detachably provided with a sealing cover.

[0007] The utility model is further configured as follows: an anti-backflow mechanism is arranged in the oil pumping pipe.

[0008] The utility model is further configured as follows: the anti-backflow mechanism includes an oil blocking rod, one end of the oil blocking rod is provided with a second piston, and the outer wall of the oil blocking rod is connected to the inner wall of the oil pipeline through threaded cooperation.

[0009] The utility model is further configured as follows: aisles are provided in the middle of the first piston and the oil pushing rod, the oil blocking rod is slidably arranged in the aisle and is consistent with the sliding direction of the first piston, and a third piston is sleeved between the oil blocking rod and the oil pushing rod.

[0010] The utility model is further configured as follows: the oil drain hole is higher than the port of the oil delivery pipe located in the oil drain cover.

[0011] In summary, the beneficial effects of the present invention are:

[0012] 1. Through this structure, the staff can judge whether the amount of lubricating oil in the reducer housing needs to be replenished by observing the amount of oil in the oil extraction pipe, without dismantling the structure on the reducer, so the inspection method is relatively simple and convenient.

[0013] 2. The oil filling pipe is connected to the oil extraction pipe, so the reducer can be directly refueled when the oil is insufficient.

[0014] 3. The oil plugging rod and the second piston can seal the oil delivery pipe after the oil filling is completed. At this time, the oil filling pipe is sealed to prevent the lubricating oil from flowing out of the oil filling pipe to the outside of the housing again.

[0015] 4. The third piston can further prevent the lubricating oil from leaking from the aisle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 It is a partial cross-sectional structural schematic diagram of the utility model;

[0018] Figure 2 It is a schematic diagram of the overall structure of the oil filling pipe in the utility model.

[0019] Reference numerals in the figure: 1 housing, 21 oil injection pipe, 22 oil pump, 23 oil drain cover, 24 oil drain hole, 31 oil extraction pipe, 32 first piston, 33 oil push rod, 34 passage, 35 third piston, 36 oil delivery pipe, 41 oil filling pipe, 42 sealing cover, 43 oil blocking rod, 44 second piston. DETAILED DESCRIPTION

[0020] The following will be combined with the attached embodiment of the utility model Figure 1-2, clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Example:

[0022] like Figure 1 to Figure 2 As shown, the utility model discloses a bevel gear reducer, including a housing 1, in which a reduction mechanism is arranged. The attached drawings provided in this embodiment are reduction schemes combining planetary gears with bevel gears. Planetary gears are beneficial to improving the accuracy of the reducer, and bevel gears are beneficial to improving the load-bearing capacity and facilitating smooth operation. Since this part is the prior art, it will not be elaborated on.

[0023] An oil injection pipe 21 is vertically arranged in the shell 1, and an oil pump 22 for conveying oil upward is arranged on the oil injection pipe 21. At the same time, an oil drain cover 23 is arranged at the upper end of the oil injection pipe 21, and an oil drain hole 24 is opened on the side wall of the oil drain cover 23; an oil extraction pipe 31 is arranged outside the shell 1, wherein an oil delivery pipe 36 is arranged at one end of the oil extraction pipe 31, one end of the oil delivery pipe 36 is connected to the oil extraction pipe 31, and the other end of the oil delivery pipe 36 penetrates the shell 1 and extends into the oil drain cover 23. In this structure, the position of the oil drain hole 24 is higher than the port of the oil delivery pipe 36 located in the oil drain cover 23; in addition, a first piston 32 is slidably arranged in the oil extraction pipe 31, and an oil push rod 33 is arranged on the end face of the first piston 32 facing away from the oil delivery pipe 36.

[0024] The working principle of this structure is as follows: the side wall of the oil extraction pipe 31 is transparent and its volume is larger than the volume of the oil delivery pipe 36. When the oil volume inside the housing 1 is sufficient, the liquid level of the lubricating oil is higher than the lower end of the oil injection pipe 21. The lubricating oil can be sucked into the oil injection pipe 21 under the action of the oil pump 22 and sprayed out from the upper end of the oil injection pipe 21. Since the position of the oil drain hole 24 is higher than the oil delivery pipe 36, when the oil push rod 33 on the oil extraction pipe 31 is pulled outward, the oil delivery pipe 36 can first suck the lubricating oil into the oil extraction pipe 31. At this time, it can be seen that the oil extraction pipe 31 The space inside is gradually filled up; when the lubricating oil in the shell 1 is insufficient, since the oil injection pipe 21 cannot contact the lubricating oil, the lubricating oil that can be sucked into the oil extraction pipe 31 is only the lubricating oil still in the oil delivery pipe 36, so it can be observed that the oil extraction pipe 31 cannot be filled with the lubricating oil; in this structure, the oil pump 22 does not need to work all the time, and an external controller can be used to start and shut down the oil pump 22. When the oil pump 22 is started but the oil extraction pipe 31 is not pumping oil or the oil is already full, the oil sprayed from the oil injection pipe 21 can flow out from the oil drain hole 24 on the oil drain cover 23.

[0025] An oil filling pipe 41 is also provided on the oil extraction pipe 31. One end of the oil filling pipe 41 is connected to the oil extraction pipe 31 and the other end is detachably provided with a sealing cover 42. This structure can share the oil extraction path with the oil extraction pipe 31 to perform the function of filling oil into the reducer housing 1, and correspondingly, an anti-backflow mechanism is provided in the oil extraction pipe 31.

[0026] The specific structure and setting scheme of the anti-backflow mechanism are as follows: a passage 34 is provided in the middle of the first piston 32 and the oil push rod 33. The anti-backflow mechanism includes an oil blocking rod 43 and a second piston 44 fixedly arranged at one end of the oil blocking rod 43. In this structure, the oil blocking rod 43 is slidably arranged in the passage 34 and is consistent with the sliding direction of the first piston 32, and the outer wall of the oil blocking rod 43 is connected to the inner wall of the oil delivery pipe 36 through threaded matching. When the oil blocking rod 43 is connected to the inner wall of the oil delivery pipe 36, the second piston 44 can be used to block the oil delivery pipe 36. In addition, a third piston 35 is sleeved between the oil blocking rod 43 and the oil push rod 33.

[0027] The working principle of the structure is as follows: when the reducer is to be filled with oil, first ensure that the first piston 32 is located on the side of the oil filling pipe 41 away from the oil delivery pipe 36, then open the sealing cover 42 on the oil filling pipe 41 to connect the oil filling mechanism to the oil filling pipe 41, and then rotate the oil blocking rod 43 to make the second piston 44 leave the oil delivery pipe 36. At this time, the oil filling mechanism can be filled with oil. When the oil filling is completed, first rotate the oil blocking rod 43 to make the second piston 44 re-block the oil delivery pipe 36, and then remove the oil filling mechanism and cover it. Return the sealing cover 42. At this time, the oil filling can be completed, or the oil blocking rod 43 can be rotated again to let the second piston 44 leave the oil pipe 36, and then the first piston 32 can be pushed by the oil pushing rod 33 to slide repeatedly on the side of the oil filling pipe 41 away from the oil pipe 36, so that all the oil in the oil filling pipe 41 flows into the oil extraction pipe 31. At this time, the first piston 32 is pushed to the side of the oil filling pipe 41 close to the oil pipe 36 to discharge the oil into the oil pipe 36, so as to facilitate the next inspection of the lubricating oil amount in the reducer.

[0028] It should also be pointed out that the terms used in the present invention, such as "front", "rear", "vertical", "horizontal", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only used to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A bevel gear reducer, comprising a housing (1), wherein a reduction mechanism is arranged in the housing (1), characterized in that: An oil injection pipe (21) is vertically arranged in the shell (1), an oil drain cover (23) is arranged at the upper end of the oil injection pipe (21), and an oil drain hole (24) is opened on the side wall of the oil drain cover (23). An oil extraction pipe (31) is arranged outside the shell (1), and an oil delivery pipe (36) is arranged at one end of the oil extraction pipe (31). One end of the oil delivery pipe (36) is connected to the oil extraction pipe (31), and the other end of the oil delivery pipe (36) penetrates the shell (1) and extends into the oil drain cover (23). An oil pump (22) is arranged on the oil injection pipe (21).

2. A bevel gear reducer according to claim 1, characterized in that: A first piston (32) is slidably disposed in the oil extraction pipe (31), and an oil pushing rod (33) is disposed on the end surface of the first piston (32) facing away from the oil delivery pipe (36).

3. A bevel gear reducer according to claim 2, characterized in that: An oil injection pipe (41) is provided on the oil extraction pipe (31); one end of the oil injection pipe (41) is connected to the oil extraction pipe (31) and the other end is detachably provided with a sealing cover (42).

4. A bevel gear reducer according to claim 3, characterized in that: A backflow prevention mechanism is provided in the oil pumping pipe (31).

5. A bevel gear reducer according to claim 4, characterized in that: The anti-backflow mechanism comprises an oil blocking rod (43), one end of which is provided with a second piston (44), and the outer wall of the oil blocking rod (43) is connected to the inner wall of the oil delivery pipe (36) by means of threaded engagement.

6. A bevel gear reducer according to claim 5, characterized in that: A passage (34) is provided in the middle of the first piston (32) and the oil pushing rod (33). The oil blocking rod (43) is slidably arranged in the passage (34) and has the same sliding direction as the first piston (32). A third piston (35) is sleeved between the oil blocking rod (43) and the oil pushing rod (33).

7. A bevel gear reducer according to claim 1, characterized in that: The oil drain hole (24) is higher than the port of the oil delivery pipe (36) located inside the oil drain cover (23).

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