CN209781574U - Speed reducer with long service life - Google Patents

Abstract

The utility model discloses a reduction gear with long service life, including the casing that has the inner chamber, install output shaft, first jackshaft and second jackshaft in proper order through the bearing in the inner chamber, and power connection in proper order with gear engagement's mode between the three, the casing is equipped with the mounting hole in the one end that is close to the second jackshaft, mounting hole and inner chamber intercommunication, and rotate through deep groove ball bearing in the mounting hole and install the input shaft, is connected through bevel gear power between input shaft and the second jackshaft, it is equipped with thrust ball bearing still to overlap on the input shaft, and bevel gear's one end is kept away from at deep groove ball bearing to this thrust ball bearing butt. The utility model has the advantages that: the input shaft is stressed evenly, the working stability of the speed reducer is high, and the service life of the speed reducer can be prolonged.

Description

Speed reducer with long service life

Technical Field

the utility model relates to a reduction gear, concretely relates to reduction gear with long service life.

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.

In vehicle engineering machinery such as automobiles, speed reducers are also widely used, especially in recent new energy automobiles with high heat. Reduction gear equipment in the car is in the motion state usually when using to have comparatively obvious jolting, it is not hard up to lead to biography power parts such as the gear of mutually supporting in the reduction gear, wheel axle to appear easily, can adopt bevel gear in some reduction gears simultaneously, bevel gear can produce axial load when the transmission motion, under the axial atress is too big and the reduction gear comparatively obvious circumstances of jolting, reduction gear mechanism work stability is relatively poor, life is also comparatively short.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a reduction gear with long service life can solve 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 reduction gear with long service life, is including the casing that has the inner chamber, install output shaft, first jackshaft and second jackshaft in proper order through the bearing respectively in the inner chamber, and power connection in proper order with gear engagement's mode between the three, its key lies in: the casing is equipped with the mounting hole in the one end that is close to the second jackshaft, mounting hole and inner chamber intercommunication, and rotate through deep groove ball bearing in the mounting hole and install the input shaft, is connected through bevel gear pair power between input shaft and the second jackshaft, still the cover is equipped with thrust ball bearing on the input shaft, and this thrust ball bearing is located deep groove ball bearing and keeps away from the one end of bevel gear pair.

By adopting the structure, the input power is transmitted to the output shaft through the output shaft, the second intermediate shaft and the first intermediate shaft in sequence, and the speed reduction transmission is realized through the meshing relation between the output shaft and the second intermediate shaft, wherein the input shaft and the second intermediate shaft are in power connection through the bevel gear, and certain axial load is arranged on the input shaft during the work, so that the input shaft is provided with not only the deep groove ball bearing radial load, but also the thrust ball bearing axial load, the balance stress can be realized, the working stability of the speed reducer is improved, and the service life of the speed reducer is further prolonged.

Preferably, the method comprises the following steps: the input shaft is sleeved with a first bevel gear; the second intermediate shaft is provided with a second tooth part and sleeved with a second bevel gear meshed with the first bevel gear; the first intermediate shaft is provided with a first tooth part and sleeved with a transfer large gear meshed with the second tooth part; an output big gear meshed with the first tooth part is sleeved on the output shaft. By adopting the structure, the efficient large-speed-ratio speed reduction of the equipment is convenient to realize.

preferably, the method comprises the following steps: the first intermediate shaft and the second intermediate shaft are gear shafts. By adopting the structure, the whole layout is compact, and the assembly is convenient.

Preferably, the method comprises the following steps: and a bearing washer is arranged at one end of the thrust ball bearing, which is far away from the deep groove ball bearing. By adopting the structure, the loss of the lubricating oil in the bearing can be reduced, and the lubricating effect is ensured.

Preferably, the method comprises the following steps: and a gasket is arranged between the thrust ball bearing and the deep groove ball bearing.

Preferably, the method comprises the following steps: the casing includes left case and right case, and both locks form the inner chamber. By adopting the structure, the assembly is convenient.

Preferably, the method comprises the following steps: and two ends of the output shaft respectively penetrate out of the left box and the right box. By adopting the structure, two output mounting ends can be provided, and the two ends of the output shaft are conveniently connected with loads respectively.

Preferably, the method comprises the following steps: and oil seals are arranged at the positions of the left box and the right box corresponding to the output shafts. By adopting the structure, the lubricating oil can be prevented from leaking, and the lubricating effect is ensured.

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

Adopt the utility model provides a reduction gear with long service life, the input shaft atress is balanced, and reduction gear job stabilization nature is high, can prolong the life of reduction gear.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

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

As shown in fig. 1, a reduction gear with long service life includes casing 1 that is formed by the lock of left case 1c and right case 1d, and casing 1 has inner chamber 1a, and the speed reduction drive structure in casing 1 includes output shaft 3, first jackshaft 4 and second jackshaft 5, and the three all rotates through bearing 2 and installs inside inner chamber 1a, and casing 1 still is equipped with mounting hole 1b in the one end that is close to second jackshaft 5, installs input shaft 6 through deep groove ball bearing 7 rotation in the mounting hole 1 b.

The input shaft 6 is sleeved with a first bevel gear 9; the second intermediate shaft 5 is provided with a second tooth part 5a and a second bevel gear 10 which is meshed with the first bevel gear 9 in a sleeved mode; the first intermediate shaft 4 is provided with a first tooth part 4a and a transfer large gear 11 which is engaged with the second tooth part 5a in a sleeved mode; the output shaft 3 is fitted with an output large gear 12 engaging with the first tooth portion 4 a. When the speed reducer works, input power is transmitted to the output shaft 3 sequentially through the input shaft 6, the first bevel gear 9, the second bevel gear 10, the second intermediate shaft 5, the second tooth part 5a, the transfer large gear 11, the first tooth part 4a and the output large gear 12, and speed reduction is achieved through the tooth number proportional relation among the input power, the first bevel gear 9, the second bevel gear 10, the second intermediate shaft 5, the second tooth part 5a, the transfer large gear.

Because the input shaft 6 is connected with the second intermediate shaft 5 through bevel gear power, certain axial load is provided on the input shaft 6 during operation, a thrust ball bearing 8 is further sleeved on the input shaft 6, the thrust ball bearing 8 abuts against one end, far away from the first bevel gear 9, of the deep groove ball bearing 7, the thrust ball bearing 8 can bear the axial load at the position and play a role in balancing stress, improving the working stability of the speed reducer, and further prolonging the service life of the speed reducer.

The first intermediate shaft 4 and the second intermediate shaft 5 are gear shafts, and the first tooth portion 4a and the second tooth portion 5a are respectively formed on the two shafts.

In order to reduce the loss of lubricating oil in the bearing and ensure the lubricating effect, a bearing gasket 13 is arranged at one end of the thrust ball bearing 8 far away from the deep groove ball bearing 7.

Both ends of the output shaft 3 respectively penetrate through the left case 1c and the right case 1d, so that loads can be simultaneously arranged at both ends of the output shaft.

In order to prevent the leakage of the lubricating oil and ensure the lubricating effect, the left box 1c and the right box 1d are provided with oil seals 14 at the positions corresponding to the output shaft 3.

And a shaft steel retaining ring 16 is arranged on the second intermediate shaft 5 at the position corresponding to the end surface of the second bevel gear 10.

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 (8)

1. The utility model provides a reduction gear with long life, includes casing (1) that has inner chamber (1a), install output shaft (3), first jackshaft (4) and second jackshaft (5) in proper order through bearing (2) in inner chamber (1a) respectively, and with gear engagement's mode in proper order power connection, its characterized in that between the three: casing (1) is equipped with mounting hole (1b) in the one end that is close to second jackshaft (5), and mounting hole (1b) and inner chamber (1a) intercommunication, and rotate through deep groove ball bearing (7) in mounting hole (1b) and install input shaft (6), through bevel gear pair power connection between input shaft (6) and second jackshaft (5), still the cover is equipped with thrust ball bearing (8) on input shaft (6), and this thrust ball bearing (8) are located deep groove ball bearing (7) and keep away from the one end of bevel gear pair.

2. A decelerator having a long service life as claimed in claim 1, characterised in that: the input shaft (6) is sleeved with a first bevel gear (9);

The second intermediate shaft (5) is provided with a second tooth part (5a) and sleeved with a second bevel gear (10) meshed with the first bevel gear (9);

The first intermediate shaft (4) is provided with a first tooth part (4a) and is sleeved with a transfer large gear (11) meshed with the second tooth part (5 a);

An output big gear (12) meshed with the first tooth part (4a) is sleeved on the output shaft (3).

3. A decelerator having a long service life as claimed in claim 2, characterised in that: the first intermediate shaft (4) and the second intermediate shaft (5) are gear shafts.

4. A decelerator having a long service life as claimed in claim 2 or 3, characterised in that: and a bearing gasket (13) is arranged at one end of the thrust ball bearing (8) far away from the deep groove ball bearing (7).

5. Reducer with a long service life according to claim 4, characterized in that: and a gasket (15) is arranged between the thrust ball bearing (8) and the deep groove ball bearing (7).

6. A decelerator having a long service life as claimed in claim 1, characterised in that: the shell (1) comprises a left box (1c) and a right box (1d), and the left box and the right box are buckled to enclose the inner cavity (1 a).

7. Reducer with a long service life according to claim 6, characterized in that: and two ends of the output shaft (3) respectively penetrate out of the left box (1c) and the right box (1 d).

8. Reducer with a long service life according to claim 7, characterized in that: and oil seals (14) are arranged at the positions where the left box (1c) and the right box (1d) penetrate out corresponding to the output shaft (3).