CN209781577U - Short-range efficient speed reducer with high reliability - Google Patents

Abstract

The utility model discloses a short distance high efficiency reduction gear with high reliability, which comprises a housin, power connection has input shaft, first jackshaft, second jackshaft and output shaft in proper order with gear engagement's mode in the casing, and the one end cover that first jackshaft is close to the input shaft is equipped with first bevel gear, is equipped with second bevel gear on the input shaft, and wherein second bevel gear includes the awl tooth portion with first bevel gear power engagement to and the hollow axial region that cup joints with the input shaft spline, hollow axial region, input shaft all rotate through deep groove ball bearing and install in the casing, and still the cover is equipped with thrust ball bearing on the hollow axial region. The utility model has the advantages that: the input shaft stress can be balanced, the working stability of the speed reducer is improved, and the purpose of prolonging the service life of the speed reducer is achieved.

Description

Short-range efficient speed reducer with high reliability

Technical Field

The utility model belongs to the technical field of the transmission, a reduction gears is related to, concretely relates to short distance high efficiency reduction gear with high reliability.

Background

The speed reducer is an independent component consisting of a gear transmission, a worm transmission and a gear-worm transmission mechanism which are enclosed in a rigid shell, is commonly used as an intermediate transmission device between a prime motor and a working machine, plays a role in matching rotating speed and transmitting torque between the prime motor and the working machine or an execution mechanism, and is widely applied to modern machinery.

In recent years, some short-range high-efficiency speed reducing mechanisms are widely applied to high and new technical fields such as new energy automobiles, intelligent agricultural machinery and the like, the number of stages of transmission motion of the speed reducing mechanisms is small, and high transmission efficiency can be obtained. For satisfying reasonable spatial layout, can have the contained angle between each input, the output shaft in some reduction gears, for this reason, this type of reduction gear can adopt bevel gear to carry out power transmission, and bevel gear can bear great axial load when the transmission motion to lead to the stability of reduction gear work relatively poor, and reduce the life of reduction gear.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a short distance high efficiency reduction gear with high reliability can solve the reduction gear job stabilization nature poor, the short technical problem of life.

In order to achieve the above purpose, the utility model discloses technical scheme as follows:

The utility model provides a short distance high efficiency reduction gear with high reliability, includes the casing, power connection has input shaft, first jackshaft, second jackshaft and output shaft in proper order with gear engagement's mode in the casing, its key lies in: the input shaft is supported in the shell through a first deep groove ball bearing, the hollow shaft is supported in the shell through a second deep groove ball bearing, a thrust ball bearing is arranged between the first deep groove ball bearing and the second deep groove ball bearing, and the thrust ball bearing is sleeved on the hollow shaft.

By adopting the structure, power is input from the input shaft, then power transmission is carried out through the first intermediate shaft, the second intermediate shaft and the output shaft in sequence, and speed reduction transmission is realized through the gear meshing relationship between the first intermediate shaft and the second intermediate shaft, wherein the input shaft and the first intermediate shaft are in power connection through the first bevel gear and the second bevel gear, and when the speed reducer works, the hollow shaft parts of the input shaft and the second bevel gear can bear larger axial load, so that two deep groove ball bearings bearing radial load are arranged on the input shaft and the hollow shaft part, and a thrust ball bearing axial load is arranged between the two deep groove ball bearings, so that the balanced stress can be realized, the work stability of the speed reducer is improved, and the purpose of prolonging the service life of the speed reducer is also achieved.

Preferably, the method comprises the following steps: the tightening ring of the thrust ball bearing is abutted with the inner ring of the second deep groove ball bearing through a first bearing gasket; the loose ring of the thrust ball bearing is abutted with the outer ring of the first deep groove ball bearing through a second bearing gasket; the shell is provided with an annular groove at a position corresponding to the first deep groove ball bearing, a limiting blocking piece is installed in the annular groove, and one end, far away from the second bearing gasket, of the outer ring abuts against the limiting blocking piece. By adopting the structure, the axial load generated by the transmission motion of the second bevel gear is transmitted to the shell of the speed reducer through the inner ring of the second deep groove ball bearing, the tightening ring of the thrust ball bearing, the loosening ring of the thrust ball bearing, the outer ring of the first deep groove ball bearing and the limiting blocking piece in sequence, so that the unloading of the axial load is completed, and the axial impact on the deep groove ball bearing when the speed reducer works is reduced.

preferably, the method comprises the following steps: one end of the first intermediate shaft, which is far away from the first bevel gear, is provided with a first tooth part; the second intermediate shaft is provided with a second tooth part and sleeved with a transfer gear meshed with the first tooth part; the output shaft is sleeved with an output gear meshed with the second tooth part. By adopting the structure, the short-range high-efficiency speed reduction of the equipment is favorably realized.

Preferably, the method comprises the following steps: the first intermediate shaft, the second intermediate shaft and the output shaft are rotatably mounted on the shell through bearings, and the first intermediate shaft is coaxial with the output shaft.

Preferably, the method comprises the following steps: the axial central hole part of the output gear is fixedly connected with the output shaft, and the axial central hole part is rotationally connected with the first intermediate shaft through a first bearing. By adopting the structure, the coaxiality between the output shaft and the first intermediate shaft can be increased, and the working stability of the mechanism is ensured.

Preferably, the method comprises the following steps: and a square hole is formed in one end, far away from the second bevel gear, of the input shaft. By adopting the structure, the square head of the flexible shaft can be conveniently connected.

Preferably, the method comprises the following steps: the included angle between the input shaft and the first intermediate shaft is 60 degrees. By adopting the structure, the structure layout is reasonable, and the assembly requirement of the speed reducer in the prime motor equipment can be met.

Compared with the prior art, the beneficial effects of the utility model are that:

Adopt the utility model provides a high-efficient reduction gear of short distance with high reliability, the input shaft cup joints with the hollow axial region of second bevel gear with the spline mode, can guarantee the reliability of connecting, power transmission's stationarity, and not only be equipped with the deep groove ball bearing who bears radial load on input shaft and hollow axial region, still be equipped with the thrust ball bearing who bears axial load, can play balanced input shaft atress, promote reduction gear job stabilization's effect to reach extension reduction gear life's purpose simultaneously.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic illustration of the assembled relationship of the input shaft and the second bevel gear;

FIG. 3 is an enlarged schematic view of the abutting relationship between the reaction thrust ball bearing and the two deep groove ball bearings.

Detailed Description

the present invention will be further described with reference to the following examples and accompanying drawings.

As shown in fig. 1 and 2, a short-range efficient speed reducer with high reliability structurally comprises a housing 1, wherein an input shaft 5, a first intermediate shaft 2, a second intermediate shaft 3 and an output shaft 4 are rotatably mounted in the housing 1 through bearings, an included angle between the input shaft 5 and the first intermediate shaft 2 is 60 degrees, the first intermediate shaft 2 is coaxial with the output shaft 4, the second intermediate shaft 3 is parallel to the output shaft 4, the input shaft 5 is in power connection with the first intermediate shaft 2 through a first bevel gear 2a and a second bevel gear 5a, and a first tooth part 2b is arranged at one end, away from the first bevel gear 2a, of the first intermediate shaft 2; a second tooth part 3a is arranged on the second intermediate shaft 3, and a transfer gear 3b meshed with the first tooth part 2b is sleeved on the second intermediate shaft; the output shaft 4 is fitted with an output gear 4a that meshes with the second tooth portion 3 a.

When the reducer works, motive power is input from the input shaft 5 through the flexible shaft, then is transmitted to the output shaft 4 through the second bevel gear 5a, the first bevel gear 2a, the first intermediate shaft 2, the first tooth part 2b, the transfer gear 3b, the second intermediate shaft 3 and the output gear 4a in sequence, and the reduction transmission is realized through the gear meshing relationship among the two.

the first bevel gear 2a is sleeved on the first intermediate shaft 2 through a spline, the second bevel gear 5a comprises a bevel gear part 5a1 in dynamic meshing with the first bevel gear 2a and a hollow shaft part 5a2 in spline sleeving with the input shaft 5, when the speed reducer works, the hollow shaft parts 5a2 of the input shaft 5 and the second bevel gear 5a bear large axial load, so that the input shaft 5 and the hollow shaft part 5a2 are respectively provided with a first deep groove ball bearing 6a and a second deep groove ball bearing 6b, the hollow shaft part 5a2 is further sleeved with a thrust ball bearing 7, and the thrust ball bearing 7 is arranged between the two deep groove ball bearings. Such structural layout can play balanced atress, promotes reduction gear job stabilization nature's effect to reach the purpose that extension reduction gear life simultaneously.

As shown in fig. 3, the clamp ring 7a of the thrust ball bearing 7 and the inner ring 6b1 of the second deep groove ball bearing 6b are in contact with each other via a first bearing washer 8 a; the loose ring 7b of the thrust ball bearing 7 is in contact with the outer ring 6a1 of the first deep groove ball bearing 6a through a second bearing washer 8 b; the shell 1 is provided with an annular groove 1a at a position corresponding to the first deep groove ball bearing 6a, a limit baffle 5c is installed in the annular groove 1a, one end, far away from the second bearing gasket 8b, of an outer ring 6a1 is abutted to the limit baffle 5c, and an axial load generated by the transmission motion of the second bevel gear 5a is transmitted to the shell 1 of the speed reducer through the inner ring 6b1 of the second deep groove ball bearing 6b, a tightening ring 7a of the thrust ball bearing 7, a loosening ring 7b of the thrust ball bearing 7, the outer ring 6a1 of the first deep groove ball bearing 6a and the limit baffle 5c in sequence, so that the unloading of the axial load is completed, and the axial impact on the deep groove ball bearing when the speed reducer works is reduced.

as shown in fig. 1, in order to increase the coaxiality between the output shaft 4 and the first intermediate shaft 2 and ensure the working stability of the mechanism, a part of the axial center hole of the output gear 4a is fixedly connected with the output shaft 4, and a part of the axial center hole is rotatably connected with the first intermediate shaft 2 through a first bearing 9.

As shown in fig. 2, in order to facilitate connection of the square head of the flexible shaft, a square hole 5b is formed at one end of the input shaft 5 far away from the second bevel gear 5 a.

To meet the assembly requirements of the speed reducer in the prime mover equipment, the included angle between the input shaft 5 and the first intermediate shaft 2 is 60 degrees.

Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and the scope of the present invention.

Claims (7)

1. The utility model provides a short distance high efficiency reduction gear with high reliability, includes casing (1), power connection has input shaft (5), first jackshaft (2), second jackshaft (3) and output shaft (4) in proper order with gear engagement's mode in casing (1), its characterized in that: one end of the first intermediate shaft (2) close to the input shaft (5) is sleeved with a first bevel gear (2a), the input shaft (5) is provided with a second bevel gear (5a), the second bevel gear (5a) comprises a bevel gear part (5a1) in power meshing with the first bevel gear (2a) and a hollow shaft part (5a2) in spline sleeve connection with the input shaft (5), the input shaft (5) is supported in the shell (1) through a first deep groove ball bearing (6a), the hollow shaft part (5a2) is supported in the shell (1) through a second deep groove ball bearing (6b), a thrust ball bearing (7) is arranged between the first deep groove ball bearing (6a) and the second deep groove ball bearing (6b), and the thrust ball bearing (7) is sleeved on the hollow shaft part (5a 2).

2. The short-range, high-efficiency retarder with high reliability according to claim 1, characterized in that: the tight ring (7a) of the thrust ball bearing (7) is abutted with the inner ring (6b1) of the second deep groove ball bearing (6b) through a first bearing gasket (8 a);

The loose ring (7b) of the thrust ball bearing (7) is abutted with the outer ring (6a1) of the first deep groove ball bearing (6a) through a second bearing gasket (8 b);

The shell (1) is provided with an annular groove (1a) at a position corresponding to the first deep groove ball bearing (6a), a limiting blocking piece (5c) is installed in the annular groove (1a), and one end, far away from the second bearing gasket (8b), of the outer ring (6a1) abuts against the limiting blocking piece (5 c).

3. the short-range high-efficiency speed reducer with high reliability according to claim 1 or 2, characterized in that: one end of the first intermediate shaft (2) far away from the first bevel gear (2a) is provided with a first tooth part (2 b); a second tooth part (3a) is arranged on the second intermediate shaft (3), and a transfer gear (3b) meshed with the first tooth part (2b) is sleeved on the second intermediate shaft; an output gear (4a) meshed with the second tooth part (3a) is sleeved on the output shaft (4).

4. The short-range, high-efficiency retarder with high reliability according to claim 3, characterized in that: the first intermediate shaft (2), the second intermediate shaft (3) and the output shaft (4) are rotatably mounted on the shell (1) through bearings, and the first intermediate shaft (2) is coaxial with the output shaft (4).

5. The short-range, high-efficiency retarder with high reliability according to claim 4, characterized in that: the axial central hole part of the output gear (4a) is fixedly connected with the output shaft (4), and the axial central hole part is rotationally connected with the first intermediate shaft (2) through a first bearing (9).

6. The short-range, high-efficiency retarder with high reliability according to claim 1, characterized in that: one end of the input shaft (5) far away from the second bevel gear (5a) is provided with a square hole (5 b).

7. The short-range, high-efficiency retarder with high reliability according to claim 1, characterized in that: the included angle between the input shaft (5) and the first intermediate shaft (2) is 60 degrees.