CN111412269A - The structure of the output shaft of the reducer and the mandrel of the equipment is integrated - Google Patents

Abstract

The invention discloses an integrated structure of an output shaft of a reducer and an equipment core shaft, the output shaft is installed in the reducer through a first bearing and a second bearing, and the final stage gear of the reducer is connected with the output shaft through interference fit through a key; The shaft is arranged inside the output shaft through the first copper sleeve and the second copper sleeve. On the outside of the copper sleeve 1 and between the mating surfaces of the output shaft and the mandrel, there are in turn a spring retaining ring for a hole, a spacer ring and an oil seal 1. The outer side of the second sleeve and located between the mating surfaces of the output shaft and the mandrel are sequentially provided with a second retaining ring for holes, a second oil seal and a third retaining ring for holes. The mandrel passes through the involute spline part of the shaft end and the spline seat. The spline seat is fixedly connected with the reducer case body, and the shaft end of the mandrel is provided with a snap ring and a pressing plate. The integrated structure has a simple design and high assembly efficiency, which can ensure the concentricity of the output shaft of the reducer and the core shaft of the equipment, and reduce the additional radial force on the core bearing, thereby reducing the vibration of the entire system and avoiding the occurrence of quality accidents.

Description

The structure of the output shaft of the reducer and the mandrel of the equipment is integrated

technical field

The invention relates to the technical field of electric motors, in particular to an integrated structure of an output shaft of a reducer and an equipment core shaft.

Background technique

In the traditional process of using the output shaft of the reducer to drive the equipment mandrel to rotate, the equipment mandrel is fixed on the bracket, the output shaft of the reducer drives the drive shaft of the working machine, and the concentricity of the connection between the output shaft of the reducer and the drive shaft of the working machine is difficult. ensure. In the actual working process, the vibration of the reducer and the working machine is very large, and the core bearing is subjected to a large additional radial force, which will cause quality accidents such as shortened bearing life, broken shaft, and even box cracking.

In order to solve this problem, it is necessary to improve the structure more reasonably and efficiently, to ensure the concentricity of the mandrel and the output shaft of the reducer as much as possible during processing and assembly, and to reduce the additional radial force on the core bearing, thereby reducing the Vibration of the entire system.

SUMMARY OF THE INVENTION

In view of the above existing problems, the present invention aims to provide an integrated structure of the output shaft of the reducer and the core shaft of the equipment, which can ensure the concentricity of the output shaft of the reducer and the core shaft of the equipment, so that the system vibration is small, and the occurrence of quality accidents can be avoided to the greatest extent. .

In order to achieve the above purpose, the technical solution adopted in the present invention is as follows: an integrated structure of the output shaft of the reducer and the core shaft of the equipment, the output shaft is installed in the reducer through the first bearing and the second bearing, and the final gear of the reducer passes through the The first key is connected with the output shaft by interference fit, and the torque is transmitted by the second key and the shaft body of the output shaft; the mandrel is set inside the output shaft through the first copper sleeve and the second copper sleeve, outside the first copper sleeve and located between the output shaft and the mandrel Between the mating surfaces of the fuselage, there are the first elastic retaining ring for holes, the spacer ring and the first oil seal, and the second outer side of the copper sleeve and between the mating surfaces of the output shaft and the mandrel are sequentially provided with the second elastic retaining ring for holes, the second oil seal and the Retaining ring for the hole 3. The mandrel is connected with the spline seat through the involute spline part of the shaft end, and the spline seat is connected and fixed with the reducer case body by screws. The shaft end of the mandrel is provided with a snap ring fixed by bolts. and pressure plate.

Further, the mating surfaces of the mandrel and the first copper sleeve and the second copper sleeve are carburized.

Further, an oil seal 3 is arranged between the matching surface of the output shaft and the transparent cover, and an oil seal 4 is arranged between the matching surface of the output shaft and the spline seat.

Further, an oil injection pipe is arranged on the spline seat to communicate with the oil injection passage in the spline seat.

Further, an O-ring is arranged between the mating surfaces of the pressing plate and the mandrel.

The beneficial effects of the present invention are:

1. The integrated structure of the output shaft of the reducer and the core shaft of the equipment disclosed in the present invention has a simple structure design and high assembly efficiency, which can ensure the concentricity of the output shaft of the reducer and the core shaft of the equipment, and reduce the additional radial load on the core bearing. Therefore, the vibration of the whole system can be reduced, and the occurrence of quality accidents such as broken shaft of the gear shaft, cracking of the box body and shortening of the bearing life can be avoided;

2. The mandrel and the spline seat are connected by splines, which makes it easier to replace and install the mandrel, and the disassembly and assembly of the entire structure is relatively simple, which is convenient for use and maintenance;

3. The additional radial force between the output shaft of the reducer and the mandrel is small, so that the wear is small and the service life of the equipment is prolonged.

Description of drawings

1 is a schematic structural diagram of an integrated structure of a reducer output shaft and an equipment mandrel disclosed in the present invention;

1-output shaft, 2-first bearing, 3-second bearing, 4-final gear, 5-key one, 6-key two, 7-mandrel, 8-copper sleeve one, 9-copper sleeve two, 10- Retaining ring for hole 1, 11- Spacer ring, 12- Oil seal 1, 13- Retaining ring for hole 2, 14- Oil seal 2, 15- Retaining ring for hole 3, 16- Spline seat, 17- Screw, 18-bolt, 19-retaining ring, 20-pressing plate, 21-through cover, 22-oil seal three, 23-oil seal four, 24-oil injection pipe, 25-O-ring.

Detailed ways

In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention will be further described below with reference to FIG. 1 and the embodiments.

It should be noted that the embodiments provided by the present invention are only for the purpose of effectively explaining the technical features of the present invention, and the positioning words such as the left side, the right side, the upper end, the lower end, etc. are only for the purpose of improving the embodiments of the present invention. The description should not be regarded as a limitation on the technical solution of the present invention.

In order to ensure the concentricity between the output shaft of the reducer and the core shaft of the equipment, this embodiment discloses an integrated structure of the output shaft of the reducer and the core shaft of the equipment, and the output shaft 1 is installed in the reducer through the first bearing 2 and the second bearing 3 , the final stage gear 4 of the reducer is connected with the output shaft 1 through an interference fit through the key 1 5, and the torque is transmitted by the key 2 6 and the shaft body of the output shaft; the mandrel 7 is coaxially arranged on the Inside the output shaft 1, to ensure the concentricity of the mandrel 7 and the output shaft 1, the outer surface of the mandrel 7 is provided with a flat key, and on the outside of the copper sleeve 1 8 and located between the mating surfaces of the output shaft 1 and the mandrel 7 in turn The first 10, spacer ring 11 and the first oil seal 12 for the hole are provided with the second ring for the hole 13 and the second oil seal 14 on the outside of the second copper sleeve 9 and between the mating surfaces of the output shaft 1 and the mandrel 7 in order. Retaining ring three 15 is used for the hole, the mandrel 7 is connected to the spline seat 16 through the involute spline part of the shaft end, which is easy to replace and install the mandrel 7, and the spline seat 16 is connected and fixed with the reducer body through the screw 17, To limit the axial rotation of the mandrel 7 , the shaft end of the mandrel 7 is provided with a snap ring 19 and a pressing plate 20 fixed by bolts 18 to position the mandrel 7 in the axial direction.

The inner diameter of the first copper sleeve 8 and the second copper sleeve 9 and the matching tolerance of the mandrel 7 can be controlled through the hole to ensure the concentricity of the mandrel 7 and the output shaft 1 .

The mating surfaces of the mandrel 7 and the copper sleeve 1 8 and the copper sleeve 2 9 are all carburized, which can ensure the wear resistance of the mandrel 7 .

An oil seal 3 22 is provided between the mating surfaces of the output shaft 1 and the transparent cover 21 , and an oil seal 4 23 is provided between the mating surfaces of the output shaft 1 and the spline seat 16 .

An oil filling pipe 24 is provided on the spline base 16 to communicate with the oil filling passage in the spline base 16 .

An O-ring 25 is provided between the mating surfaces of the pressing plate 20 and the mandrel 7 .

The foregoing has shown and described the basic principles, main features and advantages of the present invention. However, the above descriptions are only specific embodiments of the present invention, and the technical features of the present invention are not limited thereto. within the scope of the invention patent.

Claims (5)

1. A speed reducer output shaft and equipment mandrel integrated structure is characterized in that an output shaft (1) is installed in a speed reducer through a first bearing (2) and a second bearing (3), a final-stage gear (4) of the speed reducer is connected with the output shaft (1) in an interference fit mode through a first key (5), and a second key (6) and an output shaft body transmit torque; the mandrel (7) is arranged inside the output shaft (1) through a first copper sleeve (8) and a second copper sleeve (9), a first hole elastic check ring (10), a spacer ring (11) and a first oil seal (12) are sequentially arranged on the outer side of the first copper sleeve (8) and between the matching surfaces of the output shaft (1) and the mandrel (7), a second hole elastic check ring (13), a second oil seal (14) and a third hole elastic check ring (15) are sequentially arranged on the outer side of the second copper sleeve (9) and between the matching surfaces of the output shaft (1) and the mandrel (7), the mandrel (7) is connected with a spline seat (16) through an involute end of the shaft end, the spline seat (16) is fixedly connected with a speed reducer box body through a screw (17), and a clamping ring (19) and a pressing plate (20) which are fixed through a bolt (18) are arranged at the shaft end of the mandrel (7).

2. The integrated structure of the output shaft of the speed reducer and the mandrel of the equipment as claimed in claim 1, wherein the matching surfaces of the mandrel (7) and the first copper sleeve (8) and the second copper sleeve (9) are all subjected to carburizing treatment.

3. The integrated structure of the output shaft of the speed reducer and the mandrel of the equipment as claimed in claim 1, wherein an oil seal three (22) is arranged between the matching surfaces of the output shaft (1) and the transparent cover (21), and an oil seal four (23) is arranged between the matching surfaces of the output shaft (1) and the spline seat (16).

4. The reducer output shaft and equipment mandrel integrated structure as claimed in claim 1, characterized in that an oil filling pipe (24) is arranged on the spline seat (16) and is communicated with an oil filling passage in the spline seat (16).

5. The structure of claim 1, wherein an O-ring (25) is arranged between the matching surfaces of the pressure plate (20) and the mandrel (7).

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