The output shaft of the reducer and the core shaft of the equipment are integrated into one structure

Abstract

The invention discloses an integrated structure of a reducer output shaft and a device mandrel, wherein the output shaft is installed in the reducer through a first bearing and a second bearing, and the final gear of the reducer is connected with the output shaft through a key 1 through interference fit; the mandrel is arranged inside the output shaft through a copper sleeve 1 and a copper sleeve 2, and a hole elastic retaining ring 1, a spacer ring and an oil seal 1 are arranged in sequence on the outside of the copper sleeve 1 and between the matching surfaces of the output shaft and the mandrel, and a hole elastic retaining ring 2, an oil seal 2 and a hole elastic retaining ring 3 are arranged in sequence on the outside of the copper sleeve 2 and between the matching surfaces of the output shaft and the mandrel, the mandrel is connected with a spline seat through an involute spline part at the shaft end, the spline seat is fixedly connected with a reducer housing, and a clamping ring and a pressure plate are arranged at the shaft end of the mandrel. The integrated structure has a simple design and high assembly efficiency, can ensure the concentricity of the reducer output shaft and the device mandrel, reduce the additional radial force borne by the mandrel, thereby reducing the vibration of the entire system and avoiding the occurrence of quality accidents.

Description

Technical Field

[0001] The invention relates to the technical field of motors, and in particular to an integrated structure of a reducer output shaft and an equipment core shaft. Background Art

[0002] In the traditional process of using the output shaft of the reducer to drive the core shaft of the equipment to rotate, the core shaft of the equipment is fixed on the bracket, and the output shaft of the reducer drives the transmission shaft of the working machine. It is difficult to ensure the concentricity of the connection between the output shaft of the reducer and the transmission shaft of the working machine. In the actual working process, the vibration of the reducer and the working machine is very large, and the core shaft is subjected to a large additional radial force, which will cause quality accidents such as shortened bearing life, broken shaft, and even cracking of the box.

[0003] In order to solve this problem, it is necessary to make more reasonable and efficient improvements in the structure, to ensure the concentricity of the core shaft and the reducer output shaft as much as possible during processing and assembly, to reduce the additional radial force borne by the core shaft, and thus reduce the vibration of the entire system. Summary of the invention

[0004] In view of the above-mentioned problems, the present invention aims to provide an integrated structure of the reducer output shaft and the equipment core shaft, which can ensure the concentricity of the reducer output shaft and the equipment core shaft, reduce the system vibration, and avoid the occurrence of quality accidents as much as possible.

[0005] In order to achieve the above-mentioned purpose, the technical scheme adopted by the present invention is as follows: a structure in which a reducer output shaft and an equipment core shaft are integrated, the output shaft is installed in the reducer through a first bearing and a second bearing, the final gear of the reducer is connected to the output shaft through an interference fit through a key one, and the torque is transmitted by a key two and the output shaft body; the core shaft is arranged inside the output shaft through a copper sleeve one and a copper sleeve two, and a hole elastic retaining ring one, a spacer ring and an oil seal one are sequentially arranged on the outside of the copper sleeve one and between the matching surfaces of the output shaft and the core shaft, and a hole elastic retaining ring two, an oil seal two and a hole elastic retaining ring three are sequentially arranged on the outside of the copper sleeve two and between the matching surfaces of the output shaft and the core shaft, the core shaft is connected to the spline seat through the involute spline part at the shaft end, the spline seat is connected and fixed to the reducer housing by screws, and a retaining ring and a pressure plate fixed by bolts are provided at the shaft end of the core shaft.

[0006] Furthermore, the mating surfaces between the core shaft and the first copper sleeve and the second copper sleeve are carburized.

[0007] Furthermore, an oil seal three is provided between the matching surfaces of the output shaft and the transparent cover, and an oil seal four is provided between the matching surfaces of the output shaft and the spline seat.

[0008] Furthermore, an oil filling pipe is provided on the spline seat and is connected to the oil filling passage in the spline seat.

[0009] Furthermore, an O-ring is provided between the matching surfaces of the pressing plate and the core shaft.

[0010] The beneficial effects of the present invention are:

[0011] 1. The integrated structure of the reducer output shaft and the equipment mandrel disclosed in the present invention has a simple structural design and high assembly efficiency, which can ensure the concentricity of the reducer output shaft and the equipment mandrel, reduce the additional radial force borne by the mandrel, thereby reducing the vibration of the entire system, and avoiding the occurrence of quality accidents such as broken gear shaft, cracking of the housing and shortened bearing life;

[0012] 2. The mandrel and the spline seat are connected by splines, which makes it easier to replace and install the mandrel. The entire structure is easy to disassemble and assemble, and is easy to use and maintain;

[0013] 3. The additional radial force between the reducer output shaft and the core shaft is small, which reduces wear and extends the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of a structure in which a reducer output shaft and a device core shaft are integrated into one structure disclosed by the present invention;

[0015] 1-output shaft, 2-first bearing, 3-second bearing, 4-final gear, 5-key one, 6-key two, 7-core shaft, 8-copper sleeve one, 9-copper sleeve two, 10-elastic retaining ring for hole one, 11-spacer ring, 12-oil seal one, 13-elastic retaining ring for hole two, 14-oil seal two, 15-elastic retaining ring for hole three, 16-spline seat, 17-screw, 18-bolt, 19-circlip, 20-pressure plate, 21-through cover, 22-oil seal three, 23-oil seal four, 24-oil filling pipe, 25-O-ring. DETAILED DESCRIPTION

[0016] In order to enable ordinary technicians in this field to better understand the technical solution of the present invention, the following Figure 1 The technical solution of the present invention is further described with embodiments.

[0017] It should be noted that the embodiments provided by the present invention are only for effectively illustrating the technical features of the invention, and the positioning words such as the left side, right side, upper end, and lower end are only for better describing the embodiments of the present invention and cannot be regarded as limiting the technical solution of the present invention.

[0018] In order to ensure the concentricity of the output shaft of the reducer and the core shaft of the equipment, a structure in which the output shaft of the reducer and the core shaft of the equipment are integrated is disclosed in the present embodiment. The output shaft 1 is installed in the reducer through the first bearing 2 and the second bearing 3. The final gear 4 of the reducer is connected with the output shaft 1 through the key 1 5 by interference fit, and the torque is transmitted by the key 2 6 and the output shaft body; the core shaft 7 is coaxially arranged inside the output shaft 1 through the copper sleeve 1 8 and the copper sleeve 2 9 to ensure the concentricity of the core shaft 7 and the output shaft 1. A flat key is provided on the outer surface of the core shaft 7, which is on the outside of the copper sleeve 1 8 and located at the matching position between the output shaft 1 and the core shaft 7. A hole elastic retaining ring 10, a spacer ring 11 and an oil seal 12 are arranged in sequence between the surfaces; a hole elastic retaining ring 13, an oil seal 14 and a hole elastic retaining ring 3 15 are arranged in sequence on the outside of the copper sleeve 29 and between the matching surfaces of the output shaft 1 and the core shaft 7; the core shaft 7 is connected to the spline seat 16 through the involute spline part at the shaft end, which is easy to replace and install the core shaft 7; the spline seat 16 is connected and fixed to the reducer housing by screws 17 to limit the axial rotation of the core shaft 7; a retaining ring 19 and a pressure plate 20 fixed by bolts 18 are arranged at the shaft end of the core shaft 7 to axially position the core shaft 7.

[0019] The inner diameters of the copper sleeve 1 8 and the copper sleeve 2 9 and the matching tolerance of the core shaft 7 can be controlled through the hole to ensure the concentricity of the core shaft 7 and the output shaft 1.

[0020] The mating surfaces between the core shaft 7 and the copper sleeve 1 8 and the copper sleeve 2 9 are all carburized to ensure the wear resistance of the core shaft 7.

[0021] An oil seal 3 22 is provided between the matching surfaces of the output shaft 1 and the transparent cover 21 , and an oil seal 4 23 is provided between the matching surfaces of the output shaft 1 and the spline seat 16 .

[0022] The spline seat 16 is provided with an oil injection pipe 24 which communicates with the oil injection passage in the spline seat 16 .

[0023] An O-ring 25 is provided between the mating surfaces of the pressure plate 20 and the core shaft 7 .

[0024] The above shows and describes the basic principles, main features and advantages of the present invention. However, the above is only a specific embodiment of the present invention, and the technical features of the present invention are not limited thereto. Any other implementation methods derived by any technician in the field without departing from the technical solution of the present invention should be included in the patent scope of the present invention.

Claims

1. A structure in which the output shaft of a reducer and the core shaft of an equipment are integrated, characterized in that: The output shaft (1) is installed in the reducer through a first bearing (2) and a second bearing (3); the final gear (4) of the reducer is connected to the output shaft (1) through a key (5) by interference fit, and the torque is transmitted by the key (6) and the output shaft body; the core shaft (7) is arranged inside the output shaft (1) through a copper sleeve (8) and a copper sleeve (9); a hole elastic retaining ring (10) and a spacer ring (11) are arranged in sequence on the outside of the copper sleeve (8) and between the matching surfaces of the output shaft (1) and the core shaft (7). and an oil seal (12); a second elastic retaining ring (13), a second oil seal (14) and a third elastic retaining ring (15) are provided on the outer side of the second copper sleeve (9) and between the mating surfaces of the output shaft (1) and the core shaft (7) in sequence; the core shaft (7) is connected to a spline seat (16) through an involute spline portion at the shaft end; the spline seat (16) is connected and fixed to the reducer housing through screws (17); a retaining ring (19) and a pressure plate (20) fixed by bolts (18) are provided at the shaft end of the core shaft (7); The mating surfaces of the core shaft (7) and the copper sleeve 1 (8) and the copper sleeve 2 (9) are all carburized; An oil seal 3 (22) is provided between the matching surfaces of the output shaft (1) and the transparent cover (21), and an oil seal 4 (23) is provided between the matching surfaces of the output shaft (1) and the spline seat (16); An oil injection pipe (24) is provided on the spline seat (16) and is communicated with an oil injection passage in the spline seat (16); An O-ring (25) is provided between the mating surfaces of the pressure plate (20) and the core shaft (7); The concentricity of the core shaft (7) and the output shaft (1) is ensured by controlling the matching tolerance of the inner diameters of the copper sleeve 1 (8) and the copper sleeve 2 (9) and the core shaft (7).

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