CN218118538U

CN218118538U - Structure of skidding is prevented to heavy-duty speed reducer awl tooth end bearing inner race

Info

Publication number: CN218118538U
Application number: CN202222734578.2U
Authority: CN
Inventors: 马力; 孙洪利
Original assignee: Ward Transmission Technology Tianjin Co ltd
Current assignee: Ward Transmission Technology Tianjin Co ltd
Priority date: 2022-10-13
Filing date: 2022-10-13
Publication date: 2022-12-23
Anticipated expiration: 2032-10-13

Abstract

The utility model provides a structure of skidding is prevented to heavy load speed reducer awl tooth end bearing inner race, including shell and the input shaft and the output shaft that set up on it, the inside reduction gear group that sets up of shell, the periphery of output shaft rotates respectively and cup joints to the shell inner wall, and the one end of input shaft passes through bevel gear meshing to reduction gear group's one end, and the one end meshing of output shaft to reduction gear group's the other end, the peripheral rotation of input shaft cup joints first bearing, and first bearing is peripheral can dismantle through a pin and be connected to the shell inner wall. A heavy-duty speed reducer awl tooth end bearing inner race structure of skidding of preventing, it is fixed with shell relative position with first bearing periphery through the pin, prevented the drunkenness of input shaft when using for the bevel gear is certain with reduction gear group's fit clearance, has increased the life of equipment, has reduced the maintenance cost.

Description

Structure of skidding is prevented to heavy-duty speed reducer awl tooth end bearing inner race

Technical Field

The utility model belongs to the speed reducer field especially relates to a structure of skidding is prevented to heavy load speed reducer awl tooth end bearing inner race.

Background

The reducer is an independent part consisting of gear transmission, worm transmission and gear-worm transmission enclosed in a rigid shell, and is commonly used as a speed reduction transmission device between a prime mover and a working machine. The function of matching the rotation speed and transmitting the torque between the prime mover and the working machine or the actuating mechanism is very extensive in modern machinery. The bevel gear is usually selected for use to three machine speed reducer input shaft drive gears in the pit of prior art, the umbrella tooth axle is close to the self-aligning roller bearing of umbrella tooth end in using, outer lane relative slip always can appear along with the use, lead to box bearing frame department wearing and tearing, cooperation clearance increases between umbrella tooth axle and the gear, the organism noise pitch, long-time the use can cause spare part to damage, organism life reduces, consequently, need regularly maintain bearing frame and box, cause equipment utilization to hang down, use cost increases.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a structure of skidding is prevented to heavy load speed reducer awl tooth end bearing inner race to solve prior art umbrella tooth axle and be close to the aligning roller bearing of umbrella tooth end, outer lane relative slip always can appear along with the use, lead to box bearing frame department wearing and tearing, cause organism life to reduce, the problem that use cost increases.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

the utility model provides a structure of skidding is prevented to heavy load speed reducer awl tooth end bearing inner race, input shaft and output shaft including the shell and set up on it, the inside reduction gear set that sets up of shell, the periphery of output shaft rotates respectively and cup joints to the shell inner wall, the one end of input shaft passes through the bevel gear and meshes to reduction gear set's one end, the one end of output shaft meshes to reduction gear set's the other end, the periphery of input shaft rotates cup joints first bearing, first bearing periphery can be dismantled through a pin and be connected to the shell inner wall.

Furthermore, a first key groove is formed in the inner ring of the first bearing, a second key groove is formed in the periphery of the input shaft, the first key groove and the second key groove are in corresponding positions, and the first key block is located in the first key groove and the second key groove and used for fixing the relative position of the first bearing and the input shaft.

Furthermore, a first blind hole is formed in the outer ring of the first bearing, a first pin hole is formed in the side wall of the shell, the periphery of the pin is located in the first pin hole, and one end of the pin abuts against the first blind hole to fix the relative position of the first bearing and the shell.

Furthermore, the periphery of the input shaft is provided with a bearing cup sleeve, an inner ring of the bearing cup sleeve is provided with an installation groove position, a second bearing is located in the installation groove position, the inner ring of the second bearing is fixedly connected to the periphery of the input shaft, one end of the second bearing is abutted to one side wall of the baffle, the periphery of the baffle is fixedly connected to one end of the bearing cup sleeve, and the other end of the bearing cup sleeve is fixedly connected to the side wall of the shell.

Furthermore, a distance ring is arranged on the periphery of the input shaft, two ends of the distance ring are respectively abutted to one end of the first bearing and one end of the second bearing, and the bevel gear is located at the other end of the first bearing.

Furthermore, a nitriding sleeve is arranged on the periphery of the input shaft, and the periphery of the nitriding sleeve is hermetically connected to an inner ring of the bearing cup sleeve through a framework in a sealing mode.

Furthermore, the peripheral fixed mounting labyrinth dish of nitrogenize cover, the one end of sealed dish is equipped with the boss, and the one end of bearing cup cover is equipped with the sealed annular, and the boss is peripheral to be located the sealed annular, and boss and sealed annular constitute labyrinth oil blanket.

Compared with the prior art, a structure of skidding is prevented to heavy load speed reducer awl tooth end bearing inner race have following beneficial effect: the relative position of the periphery of the first bearing and the shell is fixed through the pin, so that the play of the input shaft is prevented when the bearing is used, the matching gap between the bevel gear and the reduction gear set is fixed, the service life of equipment is prolonged, and the maintenance cost is reduced.

Drawings

The accompanying drawings, which form a part of the present disclosure, are included to provide a further understanding of the present disclosure, and are incorporated in and constitute a part of this specification, illustrate embodiments of the present disclosure and together with the description serve to explain the present disclosure. In the drawings:

fig. 1 is a schematic cross-sectional view of an anti-slip structure of an outer ring of a bearing at a bevel gear end of a heavy-duty speed reducer according to an embodiment of the present invention;

fig. 2 is a partially enlarged view of a in fig. 1.

Description of reference numerals:

1-a housing; 2-an input shaft; 21-a bevel gear; 3-a reduction gear set; 4-an output shaft; 5-a first bearing; 6-bearing cup sleeve; 61-a second bearing; 62-a baffle; 63-distance rings; 7-nitriding the sleeve; 8-skeleton sealing; 9-sealing disc; 91-boss.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and features of the embodiments of the present invention may be combined with each other.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being 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. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate a number of the indicated technical features. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1-2, an anti-slip structure for an outer ring of a bearing at a bevel gear end of a heavy-duty speed reducer comprises a housing 1 and an input shaft 2 and an output shaft 4 which are arranged on the housing 1, wherein a reduction gear set 3 is arranged in the housing 1, the periphery of the output shaft 4 is respectively rotatably sleeved on the inner wall of the housing 1, one end of the input shaft 2 is meshed to one end of the reduction gear set 3 through a bevel gear 21, one end of the output shaft 4 is meshed to the other end of the reduction gear set 3, the periphery of the input shaft 2 is rotatably sleeved with a first bearing 5, the periphery of the first bearing 5 is detachably connected to the inner wall of the housing 1 through a pin, before the housing is assembled or when an existing housing is modified, a first pin hole needs to be drilled in a mounting position of the first bearing 5 on the housing 1, then a first blind hole is drilled in the first bearing 5, the relative position of the first bearing 5 and the housing 1 is fixed through the pin, the pin is taken out during the disassembly operation of the first bearing 5, the periphery of the first bearing 5 is fixed in the relative position to the housing 1 through the pin, the input shaft 2 is prevented from moving during the use, the clearance fit of the gear set 21 and the bevel gear 3, the reduction gear, the service life of the reduction gear is prolonged, and the maintenance cost is reduced.

In order to fix the relative position of the first bearing 5 and the input shaft 2, a first key groove is formed in the inner ring of the first bearing 5, a second key groove is formed in the periphery of the input shaft 2, the positions of the first key groove and the second key groove correspond, and a first key block is located in the first key groove and located in the second key groove and used for fixing the relative position of the first bearing 5 and the input shaft 2.

In order to improve the installation efficiency of the input shaft 2, the bearing cup sleeve 6 is arranged on the periphery of the input shaft 2, an inner ring of the bearing cup sleeve 6 is provided with an installation groove, the second bearing 61 is located in the installation groove, the inner ring of the second bearing 61 is fixedly connected to the periphery of the input shaft 2, one end of the second bearing 61 is abutted to one side wall of the baffle 62, the periphery of the baffle 62 is fixedly connected to one end of the bearing cup sleeve 6, the other end of the bearing cup sleeve 6 is fixedly connected to the side of the shell 1, the second bearing 61 is used for axially supporting the input shaft 2, the second bearing 61 and the first bearing 5 are arranged in parallel, a worker needs to assemble the input shaft 2, the first bearing 5, the second bearing 61 and the bearing cup sleeve 6 into a whole in advance, the assembly can be completed only by fixedly connecting the bearing cup sleeve 6 to the periphery of the shell 1 during the installation, the disassembly and assembly efficiency is improved, and the machine body maintenance is facilitated.

A distance ring 63 is arranged on the periphery of the input shaft 2, two ends of the distance ring 63 are respectively abutted to one end of the first bearing 5 and one end of the second bearing 61, the bevel gear 21 is positioned at the other end of the first bearing 5, and the distance ring 63 is used for limiting the relative positions of the second bearing 61 and the first bearing 5 and preventing the second bearing 61 from moving.

The periphery of the input shaft 2 is provided with a nitriding sleeve 7, the periphery of the nitriding sleeve 7 is connected to the inner ring of the bearing cup sleeve 6 in a sealing mode through a framework seal 8, the nitriding sleeve 7 and the framework seal 8 are used for guaranteeing that the input shaft 2 can maintain rotation, sealing of the nitriding sleeve 7 and the framework seal 8 is guaranteed, the end of the sealing shaft is protected, and damage to the shaft body of the input shaft 2 caused by scratch is prevented.

In addition, a labyrinth disk is fixedly installed on the periphery of the nitriding sleeve 7, a boss 91 is arranged at one end of the sealing disk 9, a sealing ring groove is arranged at one end of the bearing cup 6, the periphery of the boss 91 is located in the sealing ring groove, the boss 91 and the sealing ring groove form a labyrinth oil seal, and the labyrinth oil seal is a supplementary oil seal structure at the shaft end of the input shaft 2.

The above description is only for the preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a structure of skidding is prevented to heavy load speed reducer awl tooth end bearing inner race which characterized in that: including shell (1) and input shaft (2) and output shaft (4) that set up on it, shell (1) is inside to set up reduction gear group (3), the periphery of output shaft (4) rotates respectively and connects to shell (1) inner wall, the one end of input shaft (2) passes through bevel gear (21) and meshes the one end to reduction gear group (3), the one end of output shaft (4) meshes the other end to reduction gear group (3), first bearing (5) are cup jointed in the peripheral rotation of input shaft (2), first bearing (5) periphery can be dismantled through a pin and be connected to shell (1) inner wall.

2. The anti-slip structure of the outer ring of the bearing at the bevel gear end of the heavy-duty speed reducer as claimed in claim 1, is characterized in that: the inner ring of the first bearing (5) is provided with a first key groove, the periphery of the input shaft (2) is provided with a second key groove, the first key groove and the second key groove are in corresponding positions, and the first key block is located in the first key groove and the second key groove and used for fixing the relative position of the first bearing (5) and the input shaft (2).

3. The anti-slip structure for the bearing outer ring at the bevel gear end of the heavy-duty speed reducer as claimed in claim 1, characterized in that: the outer ring of the first bearing (5) is provided with a first blind hole, the side wall of the shell (1) is provided with a first pin hole, the periphery of the pin is positioned in the first pin hole, and one end of the pin is abutted to the relative position of the first bearing (5) and the shell (1) in the first blind hole.

4. The anti-slip structure of the outer ring of the bearing at the bevel gear end of the heavy-duty speed reducer as claimed in claim 1, is characterized in that: the periphery of input shaft (2) sets up bearing cup (6), the inner circle of bearing cup (6) is equipped with the installation trench, second bearing (61) are located the installation trench, second bearing (61) inner circle fixed connection is to the periphery of input shaft (2), the one end butt of second bearing (61) connects to a lateral wall of baffle (62), the peripheral fixed connection of baffle (62) is to the one end of bearing cup (6), the other end fixed connection of bearing cup (6) is to shell (1) lateral wall.

5. The anti-slip structure of the outer ring of the bearing at the bevel gear end of the heavy-duty speed reducer as claimed in claim 4, is characterized in that: a distance ring (63) is arranged on the periphery of the input shaft (2), two ends of the distance ring (63) are respectively abutted to one end of the first bearing (5) and one end of the second bearing (61), and the bevel gear (21) is located at the other end of the first bearing (5).

6. The anti-slip structure of the outer ring of the bearing at the bevel gear end of the heavy-duty speed reducer as claimed in claim 5, is characterized in that: the periphery of the input shaft (2) is provided with a nitriding sleeve (7), and the periphery of the nitriding sleeve (7) is hermetically connected to the inner ring of the bearing cup sleeve (6) through a framework seal (8).

7. The anti-slip structure for the outer ring of the bearing at the bevel gear end of the heavy-duty speed reducer as claimed in claim 6, characterized in that: the peripheral fixed mounting labyrinth dish of nitrogenize cover (7), the one end of sealed dish (9) is equipped with boss (91), and the one end of bearing cup cover (6) is equipped with the seal ring groove, and boss (91) periphery is located the seal ring inslot, and boss (91) and seal ring groove constitute labyrinth oil blanket.