Speed reducer

Abstract

The utility model relates to the technical field of speed reducers, and particularly discloses a speed reducer. The speed reducer comprises a speed reducer shell and an output shaft, a sealing sleeve is fixedly connected to the front end of the speed reducer shell, one end of the sealing sleeve penetrates through the sealing sleeve in the axial direction of the output shaft, the other end of the sealing sleeve is arranged outside the speed reducer shell, the output shaft penetrates through the front end and the rear end of the sealing sleeve, and the periphery of the output shaft is sleeved with a plurality of sealing rings. The periphery of the sealing ring abuts against the inner wall of the sealing sleeve, abutting assemblies used for abutting against the sealing ring are arranged at the two ends of the sealing ring, and a pressure adjusting assembly used for adjusting the pressure of the sealing ring is arranged at the front end of the sealing sleeve. The sealing ring blocks engine oil overflowing out of the speed reducer shell along the output shaft, the elasticity of the sealing ring is gradually reduced in the using process, the pressure adjusting assembly increases the pressure of the sealing ring by compressing the abutting assembly, when the sealing ring gradually loses efficacy, the abutting assembly extends and continuously abuts against the sealing ring, the sealing performance of the sealing ring is improved, and leakage of the engine oil is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of speed reducer, especially relates to a speed reducer. BACKGROUND

[0002] Speed reducer is a kind of independent assembly consisting of gear transmission, worm transmission, gear-worm transmission enclosed in rigid shell, commonly used as the speed reducer transmission device between prime mover and working machine, it plays the role of matching rotational speed and transmitting torque between prime mover and working machine or actuating mechanism, due to the meshing friction force between gear is relatively large, usually need to smear machine oil on each gear.

[0003] In prior art, speed reducer is provided with machine oil delivery pipeline, gear is arranged on output shaft, and the both ends of output shaft are rotatably connected with the shell of speed reducer, machine oil is added dropwise to one of the gears in speed reducer through pipeline, and machine oil is distributed on each gear in the mutual transmission process of gear, and machine oil is easy to overflow from speed reducer in the rotating process of output shaft, causing the phenomenon of machine oil leakage. SUMMARY

[0004] In order to overcome the defects of prior art, the purpose of the utility model is to provide a speed reducer to reduce the leakage of machine oil.

[0005] The technical scheme adopted by the utility model is:

[0006] A speed reducer, comprising a speed reducer shell and an output shaft, the front end of the speed reducer shell is fixedly connected with a sealing sleeve, one end of the sealing sleeve penetrates the sealing sleeve along the axial direction of the output shaft, the other end of the sealing sleeve is arranged outside the speed reducer shell, the output shaft penetrates the front and rear ends of the sealing sleeve along the axial direction of the sealing sleeve, a plurality of sealing rings are arranged on the outer periphery of the output shaft, the outer periphery of the sealing ring is tightly abutted against the inner wall of the sealing sleeve, the both ends of the sealing ring are provided with abutting components for abutting against the sealing ring, and the front end of the sealing sleeve is provided with a pressure regulating component for regulating the pressure of the sealing ring.

[0007] Optionally, the rear end of the sealing sleeve is provided with a sealing cover, the output shaft penetrates the sealing cover and the pressure regulating component along the axial direction of the sealing sleeve, and the abutting components are arranged between the sealing cover and the sealing ring, the pressure regulating component and the sealing ring and the sealing ring.

[0008] Optionally, the abutting component comprises a plurality of elastic members, in the initial state, the elastic members are in free state, in the pressure regulating state, the pressure regulating component compresses the elastic members, and the elastic members abut against the sealing ring.

[0009] Optionally, the pressure regulating assembly comprises a connecting cover detachably connected with the front end of the sealing sleeve and an inspection hole formed on the connecting cover, the connecting cover is sleeved on the outer periphery of the sealing sleeve and is threadedly connected with the sealing sleeve, one end of the elastic member abuts against the sealing ring, and the other end of the elastic member abuts against the connecting cover.

[0010] Optionally, a connecting piece is arranged on the inspection hole and detachably connected with the inspection hole.

[0011] Optionally, an oil discharge pipe is arranged on the outer periphery of the sealing sleeve, the oil discharge pipe is arranged inside the reducer housing, one end of the oil discharge pipe is in communication with the sealing sleeve, and the other end of the oil discharge pipe extends vertically downward to the outside of the reducer housing.

[0012] Optionally, the outer periphery of the oil discharge pipe is sealingly connected with the reducer housing and the sealing sleeve, respectively.

[0013] The beneficial effects of the utility model lie in that the sealing ring blocks the oil overflowing from the reducer housing along the output shaft, the elasticity of the sealing ring gradually decreases in the use process, the sealing ring and the pressing assembly are observed by the staff through the inspection hole, the pressure regulating assembly increases the pressure of the sealing ring by compressing the pressing assembly, the elastic member gradually elongates when the sealing ring gradually fails, the sealing ring is continuously pressed, the sealing property of the sealing ring is improved, and the leakage of the oil is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a schematic view of the overall structure of the utility model;

[0015] Figure 2 It is a sectional view of the overall structure of the utility model.

[0016] The correspondence between the reference signs and names in the drawing is as follows: 1, reducer housing; 11, oil discharge pipe; 2, output shaft; 3, sealing sleeve; 4, sealing ring; 5, sealing cover; 6, elastic member; 7, connecting cover; 8, inspection hole; 9, connecting piece. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the utility model will be described below with reference to the drawings, and the technical solutions in the embodiments of the utility model are clearly and completely described, all of which take the right leg part as an example. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0018] The embodiment provides the following technical solutions:

[0019] Reference Figure 1The utility model provides a kind of speed reducer, including speed reducer shell 1 and output shaft 2, the front end of speed reducer shell 1 is fixedly connected with sealing sleeve 3, one end of sealing sleeve 3 is along the axial direction of output shaft 2 and penetrates sealing sleeve 3, the other end of sealing sleeve 3 is arranged in the outside of speed reducer shell 1, with reference to Figures 1-2 The outer periphery of output shaft 2 is provided with a plurality of sealing rings 4, the outer periphery of sealing ring 4 is tightly contacted with the inner wall of sealing sleeve 3, and the two ends of sealing ring 4 are provided with pressing components for tightly contacting sealing ring 4, the rear end of sealing sleeve 3 is fixedly connected with sealing cover 5, the front end of sealing sleeve 3 is provided with pressure regulating components for regulating the pressure of sealing ring 4, output shaft 2 penetrates sealing cover 5 and pressure regulating components along the axial direction of sealing sleeve 3, the outer periphery of output shaft 2 is rotatably connected with sealing ring 4, sealing cover 5 and pressure regulating components, and the plurality of pressing components are respectively arranged between sealing cover 5 and sealing ring 4, pressure regulating components and sealing ring 4, and sealing ring 4 and sealing ring 4.

[0020] With reference to Figure 2 The outer periphery of sealing sleeve 3 is provided with oil discharge pipe 11, oil discharge pipe 11 is arranged inside speed reducer shell 1, one end of oil discharge pipe 11 is communicated with the circumferential side of sealing sleeve 3, oil discharge pipe 11 is arranged close to sealing cover 5, the other end of oil discharge pipe 11 extends vertically downward to the outside of speed reducer shell 1, the outer periphery of oil discharge pipe 11 is sealingly connected with speed reducer shell 1 and sealing sleeve 3 respectively, and the oil in sealing sleeve 3 is discharged through oil discharge pipe 11.

[0021] The pressing component includes a plurality of elastic members 6, the elastic member is sleeved in the initial state, the elastic member 6 is in free state, the pressure regulating component compresses the elastic member 6 in the pressure regulating state, the elastic member 6 presses the sealing ring 4, in the embodiment, the elastic member 6 is spring sheet; the pressure regulating component includes connecting cover 7 detachably connected with the front end of sealing sleeve 3 and inspection hole 8 opened on connecting cover 7, connecting cover 7 is sleeved on the outer periphery of sealing sleeve 3 and is threadedly connected with sealing sleeve 3, one end of elastic member 6 is abutted with sealing ring 4, the other end of elastic member 6 is abutted with connecting cover 7, connecting member 9 is arranged on inspection hole 8, connecting member 9 is detachably connected with inspection hole 8, in the embodiment, connecting member 9 is locking bolt, locking bolt is inserted into inspection hole 8 and is threadedly connected with inspection hole 8.

[0022] Detaching connecting cover 7 is convenient for replacing the pressing component and sealing ring 4, the staff observes the compression condition of sealing ring 4, pressing component and the oil amount in sealing sleeve 3 through inspection hole 8, it is convenient for the staff to adjust the pressure regulating component to increase the pressure of sealing ring 4, when sealing ring 4 gradually fails, the elastic member 6 gradually elongates, continuously presses sealing ring 4, improves the sealing property of sealing ring 4, and reduces the leakage of oil.

[0023] Finally, it should be noted that: the above is only the preferred examples of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application are described in detail, for those skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, shall be included within the scope of the present application.

Claims

1. A speed reducer comprising a speed reducer housing (1) and an output shaft (2), characterized in that, The front end of the speed reducer shell (1) is fixedly connected with a sealing sleeve (3), one end of the sealing sleeve (3) penetrates the sealing sleeve (3) along the axial direction of the output shaft (2), the other end of the sealing sleeve (3) is arranged outside the speed reducer shell (1), the output shaft (2) penetrates the front and rear ends of the sealing sleeve (3) along the axial direction of the sealing sleeve (3), the outer periphery of the output shaft (2) is sleeved with a plurality of sealing rings (4), the outer periphery of the sealing ring (4) is abutted against the inner wall of the sealing sleeve (3), both ends of the sealing ring (4) are provided with abutting components for abutting the sealing ring (4), and the front end of the sealing sleeve (3) is provided with a pressure regulating component for regulating the pressure of the sealing ring (4).

2. The speed reducer according to claim 1, characterized by The rear end of the sealing sleeve (3) is provided with a sealing cover (5), the output shaft (2) penetrates the sealing cover (5) and the pressure regulating component along the axial direction of the sealing sleeve (3), and a plurality of abutting components are respectively arranged between the sealing cover (5) and the sealing ring (4), the pressure regulating component and the sealing ring (4), and the sealing ring (4) and the sealing ring (4).

3. The speed reducer according to claim 1, wherein The abutting component comprises a plurality of elastic members (6), in the initial state, the elastic member (6) is in a free state, in the pressure regulating state, the pressure regulating component compresses the elastic member (6), and the elastic member (6) abuts against the sealing ring (4).

4. The speed reducer according to claim 3, characterized in that, The pressure regulating component comprises a connecting cover (7) detachably connected with the front end of the sealing sleeve (3) and an inspection opening (8) opened in the connecting cover (7), the connecting cover (7) is sleeved on the outer periphery of the sealing sleeve (3) and is threadedly connected with the sealing sleeve (3), one end of the elastic member (6) abuts against the sealing ring (4), and the other end of the elastic member (6) abuts against the connecting cover (7).

5. The speed reducer according to claim 4, wherein The connecting member (9) is detachably connected with the inspection opening (8).

6. The speed reducer according to claim 1, wherein The outer periphery of the sealing sleeve (3) is provided with an oil discharge pipe (11), the oil discharge pipe (11) is arranged inside the speed reducer shell (1), one end of the oil discharge pipe (11) communicates with the sealing sleeve (3), and the other end of the oil discharge pipe (11) extends vertically downward to the outside of the speed reducer shell (1).

7. The speed reducer according to claim 6, wherein The outer periphery of the oil discharge pipe (11) is sealingly connected with the speed reducer shell (1) and the sealing sleeve (3).

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