CN214699123U

CN214699123U - Sealing device for gear shaft of gearbox

Info

Publication number: CN214699123U
Application number: CN202120764046.6U
Authority: CN
Inventors: 张勋; 张玲军; 颜勤祥
Original assignee: Jiangsu Zhonggu Axle Co ltd
Current assignee: Jiangsu Zhonggu Axle Co ltd
Priority date: 2021-04-14
Filing date: 2021-04-14
Publication date: 2021-11-12
Anticipated expiration: 2031-04-14

Abstract

The utility model belongs to the technical field of the gearbox gear shaft, a sealing device of gearbox gear shaft is disclosed. This sealing device of gearbox gear shaft, including the variable speed tank wall, the gear shaft has been cup jointed in the middle part activity of variable speed tank wall, the gear shaft is provided with recess one, just recess one is installed in the left side of variable speed tank wall, the left side fixedly connected with sealing ring one of variable speed tank wall, just a sealing ring swing joint is in the outside of gear shaft, the right side fixedly connected with sealing ring two of variable speed tank wall, just two swing joints of sealing ring are in the outside of gear shaft. This sealing device of gearbox gear shaft utilizes the cooperation of spring, baffle, inlet port, oil storage tank, the oil outlet in the backward flow mechanism to use, and the gear shaft has partial fluid and can get into the oil storage tank through the inlet port and prevent that fluid from oozing outward at gearbox during operation, causes certain loss, can bring more facilities for the user simultaneously.

Description

Sealing device for gear shaft of gearbox

Technical Field

The utility model relates to a technical field of gearbox gear shaft specifically is a sealing device of gearbox gear shaft.

Background

Gear shaft refers to a mechanical part that supports and rotates with a rotating part to transmit motion, torque, or bending moment. Typically in the form of a metal rod, each section may have a different diameter. The parts rotating in the machine are mounted on the shaft, and the shaft can be divided into a crankshaft and a straight shaft according to the shape of the shaft line. According to the bearing condition of the shaft, the method can be divided into the following steps: 1. the rotating shaft bears bending moment and torque during working, and is the most common shaft in machinery, such as shafts in various speed reducers and the like; 2. spindles for supporting the rotary parts to bear only bending moment without transmitting torque, some of the spindles rotating such as a shaft of a railway car, etc., and some of the spindles not rotating such as a shaft supporting a pulley, etc.; 3. the transmission shaft is mainly used for transmitting torque without bearing bending moment, such as a long optical shaft in a crane moving mechanism, a driving shaft of an automobile and the like.

The existing gearbox gear shaft is easy to bring oil inside the gearbox out of the gearbox through a gap after long-term use, so that external parts are polluted, resources are wasted, and the service life of the gearbox gear shaft is shortened to bring certain economic loss for a user through long-term use.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an invention aim at provides a sealing device of gearbox gear shaft, and this sealing device of gearbox gear shaft has solved and has taken the fluid of gearbox inside out of the gearbox easily through the gap after long-term the use, causes the pollution to outside part, also wastes the resource simultaneously, and long-term use makes the life of gearbox gear shaft shorten and brings certain economic loss for the user's problem.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a sealing device for a gear shaft of a gearbox comprises a gearbox wall, a gear shaft is movably sleeved in the middle of the gearbox wall, the gear shaft is provided with a first groove, the first groove is arranged on the left side of the transmission case wall, the left side of the transmission case wall is fixedly connected with a first sealing ring, the first sealing ring is movably connected to the outer side of the gear shaft, the right side of the wall of the gearbox is fixedly connected with a second sealing ring, the second sealing ring is movably connected to the outer side of the gear shaft, the right end of the gear shaft is provided with spiral teeth, the spiral teeth are arranged inside the wall of the transmission case, the spiral groove is arranged inside the wall of the transmission case, the spiral groove is movably connected with the spiral teeth, the right end of the gear shaft is fixedly connected with a first fixed block, and the first fixing block is arranged on the right side of the spiral teeth, and a backflow mechanism is arranged inside the wall of the gearbox.

Preferably, the backward flow mechanism includes axle groove, recess two, fixed block two, spring, baffle, inlet port, oil storage tank and oil outlet, the axle groove sets up in the inside of variable speed box wall, and the axle groove cup joints in the outside of gear shaft, and axle groove fixed connection is fluted two, and the inner diapire fixedly connected with fixed block two of recess two, the one end of two fixedly connected with springs of fixed block, the other end fixedly connected with baffle of spring, the one end of the left side fixedly connected with inlet port of recess two, the other end fixedly connected with oil storage tank of inlet port, the one end of the left side fixedly connected with oil outlet of oil storage tank, the other end setting of oil outlet is in the left side of variable speed box wall.

Preferably, the width of the first groove and the width of the baffle are the same as the width of the first fixing block, and are both two centimeters.

Preferably, the number of the backflow mechanisms is two, and the two backflow mechanisms are symmetrically arranged above and below the gear shaft by taking the center line of the gear shaft as a reference.

Preferably, the shaft groove is a circular groove, and the width of the shaft groove is the same as that of the first fixing block.

Preferably, the number of the first fixing blocks is two, the two first fixing blocks are symmetrically arranged on two sides of the gear shaft by taking the center line of the gear shaft as a reference, and the tail ends of the first fixing blocks are triangular.

By adopting the technical scheme, the beneficial effects of the utility model are that:

1. this sealing device of gearbox gear shaft utilizes the cooperation of spring, baffle, inlet port, oil storage tank, the oil outlet in the backward flow mechanism to use, and the gear shaft has partial fluid and can get into the oil storage tank through the inlet port and prevent that fluid from oozing outward at gearbox during operation, causes certain loss, can bring more facilities for the user simultaneously.

2. This sealing device of gearbox gear shaft utilizes the cooperation of helical tooth and helicla flute to use, can avoid fluid to contain impurity and get into the oil storage tank and make the unable problem of using of inside jam, has improved seal structure's practicality.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2 in accordance with the present invention;

fig. 4 is a top view of the present invention;

fig. 5 is a cross-sectional view taken along line B-B of fig. 4 in accordance with the present invention;

fig. 6 is an enlarged view of a portion a in fig. 5 according to the present invention.

In the figure: the oil return device comprises a transmission case wall 1, a gear shaft 2, a first groove 3, a first sealing ring 4, a second sealing ring 5, a spiral tooth 6, a spiral groove 7, a first fixing block 8, a return mechanism 9, a shaft groove 901, a second groove 902, a second fixing block 903, a spring 904, a baffle 905, an oil inlet hole 906, an oil storage groove 907 and an oil outlet hole 908.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1-6, the present invention provides a technical solution: a sealing device of a gear shaft of a gearbox comprises a gearbox wall 1, a gear shaft 2 is movably sleeved in the middle of the gearbox wall 1, the gear shaft 2 is provided with a first groove 3, the first groove 3 is arranged on the left side of the gearbox wall 1, the left side of the gearbox wall 1 is fixedly connected with a first sealing ring 4, the first sealing ring 4 is movably connected with the outer side of the gear shaft 2, the right side of the gearbox wall 1 is fixedly connected with a second sealing ring 5, the second sealing ring 5 is movably connected with the outer side of the gear shaft 2, the right end of the gear shaft 2 is provided with a spiral tooth 6, the spiral tooth 6 is arranged in the gearbox wall 1, a spiral groove 7 is arranged in the gearbox wall 1, the spiral groove 7 is movably connected with the spiral tooth 6, the problem that oil containing impurities enters an oil storage tank 907 to cause the internal blockage can be avoided by utilizing the matching of the spiral tooth 6 and the spiral groove 7, and the practicability of a sealing structure is improved, the right end of the gear shaft 2 is fixedly connected with a first fixing block 8, the first fixing block 8 is installed on the right side of the spiral teeth 6, the number of the first fixing blocks 8 is two, the two first fixing blocks 8 are symmetrically arranged on two sides of the gear shaft 2 by taking the center line of the gear shaft 2 as the reference, the tail end of the first fixing block 8 is triangular, a backflow mechanism 9 is arranged inside the gearbox wall 1, the backflow mechanism 9 comprises a shaft groove 901, a second groove 902, a second fixing block 903, a spring 904, a baffle 905, an oil inlet 906, an oil storage tank 907 and an oil outlet 908, the shaft groove 901 is arranged inside the gearbox wall 1, the shaft groove 901 is sleeved on the outer side of the gear shaft 2, the shaft groove 901 is arranged to be a circular groove, the width of the shaft groove 901 is the same as that of the first fixing block 8, the shaft groove 901 is fixedly connected with the second groove 902, the inner bottom wall of the second groove 902 is fixedly connected with the second fixing block 903, and one end of the spring 904 is fixedly connected with the second fixing block 903, the other end of the spring 904 is fixedly connected with a baffle 905, the widths of the groove II 902 and the baffle 905 are the same as the width of the fixed block I8 and are both two centimeters, the left side of the groove II 902 is fixedly connected with one end of an oil inlet 906, the other end of the oil inlet 906 is fixedly connected with an oil storage tank 907, the left side of the oil storage tank 907 is fixedly connected with one end of an oil outlet 908, the other end of the oil outlet 908 is arranged on the left side of the gearbox wall 1, the number of the backflow mechanisms 9 is two, the two backflow mechanisms 9 are symmetrically arranged above and below the gear shaft 2 by taking the center line of the gear shaft 2 as a reference, and by utilizing the matching use of the spring 904, the baffle 905, the oil inlet 906, the oil storage tank 907 and the oil outlet 908 in the backflow mechanism 9, when the gearbox works, part of oil on the gear shaft 2 can enter the oil storage tank (907) through the oil inlet (906) to prevent the oil from leaking outwards, and causing certain loss, and simultaneously, more convenience can be brought to users.

When the sealing device of the gearbox gear shaft works, when the gear shaft 2 rotates, oil is carried, the gear shaft moves forwards through the spiral teeth 6, the baffle 905 is jacked up by utilizing the first fixing block 8 when the shaft groove 901 passes through, oil enters the oil inlet hole 906 when the baffle 905 rises, then the oil enters the oil storage tank 907 through the oil inlet hole 906, and when the oil in the oil storage tank 907 is discharged back to the inside of the gearbox through the oil outlet hole 908 at a certain time, the oil is prevented from seeping out, and the purpose of sealing is achieved.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a sealing device of gearbox gear shaft, includes gearbox wall (1), gear shaft (2) have been cup jointed in the middle part activity of gearbox wall (1), gear shaft (2) are provided with recess one (3), just the left side at gearbox wall (1) is installed in recess one (3), its characterized in that: the left side of the transmission box wall (1) is fixedly connected with a first sealing ring (4), the first sealing ring (4) is movably connected to the outer side of the gear shaft (2), the right side of the transmission box wall (1) is fixedly connected with a second sealing ring (5), the second sealing ring (5) is movably connected to the outer side of the gear shaft (2), the right end of the gear shaft (2) is provided with spiral teeth (6), the spiral teeth (6) are arranged inside the transmission case wall (1), the spiral groove (7) is arranged inside the transmission case wall (1), the spiral groove (7) is movably connected with the spiral teeth (6), the right end of the gear shaft (2) is fixedly connected with a first fixed block (8), and the first fixing block (8) is arranged on the right side of the spiral teeth (6), and a backflow mechanism (9) is arranged in the gearbox wall (1).

2. The seal for a transmission gear shaft according to claim 1, wherein: the backflow mechanism (9) comprises a shaft groove (901), a second groove (902), a second fixing block (903), a spring (904), a baffle plate (905), an oil inlet hole (906), an oil storage groove (907) and an oil outlet hole (908), the shaft groove (901) is arranged inside the gearbox wall (1), the shaft groove (901) is sleeved on the outer side of the gear shaft (2), the shaft groove (901) is fixedly connected with the second groove (902), the inner bottom wall of the second groove (902) is fixedly connected with the second fixing block (903), the second fixing block (903) is fixedly connected with one end of the spring (904), the other end of the spring (904) is fixedly connected with the baffle plate (905), the left side of the second groove (902) is fixedly connected with one end of the oil inlet hole (906), the other end of the oil storage groove (907) is fixedly connected with one end of the oil outlet hole (908), the other end of the oil outlet hole (908) is arranged on the left side of the gearbox wall (1).

3. The seal for a transmission gear shaft according to claim 2, wherein: the width of the second groove (902) and the width of the baffle (905) are the same as that of the first fixing block (8), and the widths are two centimeters.

4. The seal for a transmission gear shaft according to claim 1, wherein: the number of the backflow mechanisms (9) is two, and the two backflow mechanisms (9) are symmetrically arranged above and below the gear shaft (2) by taking the central line of the gear shaft (2) as a reference.

5. The seal for a transmission gear shaft according to claim 2, wherein: the shaft groove (901) is a circular groove, and the width of the shaft groove (901) is the same as that of the first fixing block (8).

6. The seal for a transmission gear shaft according to claim 1, wherein: the number of the first fixing blocks (8) is two, the two first fixing blocks (8) are symmetrically arranged on two sides of the gear shaft (2) by taking the center line of the gear shaft (2) as a reference, and the tail ends of the first fixing blocks (8) are triangular.