Motor shaft assembly

Abstract

The utility model discloses a motor shaft assembly, specifically relates to motor shaft technical field, including motor shaft body and sleeve the drive shaft of motor shaft body outside, the drive shaft outer wall is fixed with the bearing reinforcing subassembly and limit strip that distributes back and forth, the bearing reinforcing subassembly includes inner ring and outer ring, the inner ring is fixed with drive shaft, and the limit strip is fixed with the outer ring. An annular plate is fixedly arranged at the front end of the inner ring, a plurality of mounting plates distributed in an annular array are fixedly arranged on the surface of the outer side wall of the outer ring, and the annular plate and each mounting plate are in threaded connection with a first fastening bolt. According to the utility model, the driving shaft wraps the motor shaft body to play a role in wear resistance and protection, the service life of the motor shaft body can be prolonged, meanwhile, the driving shaft is detachable and very fast to replace, and the bearing reinforcing assembly is arranged on the outer wall of the driving shaft for reinforcing; the driving shaft and the inner ring can stably rotate under the supporting and fixing of the outer ring, so that the rotation stability of the driving shaft and the motor shaft body can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor shaft technical field, more specifically, a motor shaft assembly. BACKGROUND

[0002] The motor shaft assembly is one of the core components in the motor, mainly responsible for transmitting power and torque, supporting the rotation of the rotor, and transmitting mechanical energy to the connected equipment (such as gears, impellers, pulleys, etc.). The existing motor shaft usually includes a main shaft body, which is usually made of high-strength alloy steel (such as 40Cr, 45 steel) or stainless steel.

[0003] For example, the prior art with publication number CN205744861U discloses a motor output shaft assembly, which comprises an output shaft body and an optical shaft. The output shaft body comprises an injection molding body, a connecting piece, a gear, and a connecting shaft, which are sequentially fixedly connected. The output shaft body is an integral molding structure, and the optical shaft is movably connected to the connecting shaft.

[0004] However, the above-mentioned prior art has the following problems when in use: the surface of the traditional motor shaft is prone to wear during long-term rotation. Since the motor shaft is installed inside the motor, disassembly and replacement operations are extremely cumbersome, time-consuming and labor-intensive. In addition, when the motor shaft drives the external structure to rotate, the stability is low during rotation due to its certain length, which further affects the stability of the motor shaft and the external structure. Based on this, the utility model provides a motor shaft assembly with long service life and high rotation stability. UTILITY MODEL CONTENTS

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a motor shaft assembly, which wraps the motor shaft body with the driving shaft to play a wear-resistant protection role, can improve the service life of the motor shaft body, and the driving shaft can be disassembled and replaced very quickly. The bearing reinforcing assembly is installed on the outer wall of the driving shaft to reinforce it. When the motor shaft body drives the driving shaft to rotate, the driving shaft and the inner ring can rotate stably under the support and fixation of the outer ring, which can improve the rotation stability of the driving shaft and the motor shaft body, thereby solving the problems in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a motor shaft assembly, comprising a motor shaft body and a driving shaft sleeved on the outside of the motor shaft body, the outer wall of the driving shaft is fixedly provided with bearing reinforcing assemblies and limiting strips distributed in front and back, the bearing reinforcing assembly comprises an inner ring and an outer ring, the inner ring is fixed with the driving shaft, and a ring plate is fixedly arranged at the front end of the inner ring, a plurality of mounting plates are fixedly arranged on the outer wall surface of the outer ring in annular array, and a fastening bolt one is threadedly connected on the ring plate and each mounting plate.

[0007] In a preferred embodiment, the outer wall of the driving shaft is processed with an annular groove, which is arranged between the limiting strip and the ring plate, the annular groove can place the rubber sealing ring, and the sealing property between the driving shaft and the external structure can be improved by the rubber sealing ring in actual use.

[0008] In a preferred embodiment, the front end of the driving shaft is processed with a threaded hole, the number of the limiting strips is two, and the two limiting strips are symmetrically distributed with the threaded hole as the center, and the external structure and the threaded hole on the driving shaft can be connected by using bolts.

[0009] In a preferred embodiment, the outer walls of the motor shaft body, the driving shaft, the limiting strip, the inner ring, the outer ring, the ring plate, the mounting plate and the positioning strip are all coated with wear-resistant paint, the wear-resistant paint is a new type of functional paint with special functions, and the wear resistance and service life of the surfaces of these parts can be improved.

[0010] In a preferred embodiment, the outer wall of the motor shaft body is fixedly provided with a plurality of positioning strips arranged in an annular array, the rear end of the driving shaft is provided with a connecting hole in the center, the inner wall of the connecting hole is provided with positioning grooves with the same number as the positioning strips, the positioning strips are inserted into the positioning grooves, and the connecting firmness between the driving shaft and the motor shaft body can be improved by the positioning strips and the positioning grooves.

[0011] In a preferred embodiment, the outer wall of the driving shaft penetrates through the second fastening bolt, the driving shaft is detachably fixed with the motor shaft body through the second fastening bolt, the number of the second fastening bolt is multiple, and the multiple second fastening bolts are distributed at intervals with the multiple positioning grooves, so that the driving shaft and the motor shaft body can be conveniently installed and dismounted by workers.

[0012] The technical effects and advantages of the utility model are as follows:

[0013] The utility model discloses a motor shaft body is wrapped in the driving shaft and plays the wear -resisting protection function, can improve the service life of motor shaft body, simultaneously, the driving shaft can be disassembled, and the replacement is very fast, and the bearing reinforcing assembly is installed on the outer wall of the driving shaft and reinforces, when the motor shaft body drives the driving shaft to rotate, the driving shaft and the inner ring can stably rotate under the support of the outer ring, and the rotation stability of the driving shaft and the motor shaft body can be improved. ACCURACY OF DRAWINGS

[0014] Figure 1 It is the whole structure schematic view of the utility model;

[0015] Figure 2 It is the rear view of the motor shaft body and the driving shaft of the utility model;

[0016] Figure 3The utility model discloses a motor shaft body and driving shaft split schematic view.

[0017] Figure 4 The utility model discloses driving shaft, ring plate and limit strip structure schematic view.

[0018] Figure 5 The utility model discloses driving shaft front view.

[0019] The figure mark is: 1, motor shaft body;2, driving shaft;3, bearing reinforcing assembly;4, limit strip;5, annular recess;6, threaded hole;7, positioning strip;8, connecting hole;9, positioning groove;10, fastening bolt two;

[0020] 31, inner ring;32, outer ring;33, ring plate;34, mounting plate;35, fastening bolt one. Specific implementation

[0021] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the range of the utility model protection.

[0022] Refer to the description attached Figures 1-5 The utility model provides a kind of motor shaft assembly, including the motor shaft body 1 being installed in motor main body and the driving shaft 2 being sleeved in the outside of motor shaft body 1, and, bearing is provided between motor shaft body 1 and motor main body, motor shaft body 1 is also equipped with rotor, above technology is existing common technology, not do further elaboration here, the driving shaft 2 outer wall is fixedly provided with front and rear distribution bearing reinforcing assembly 3 and limit strip 4, the limit strip 4 number is two, the bearing reinforcing assembly 3 includes inner ring 31 and outer ring 32, the inner ring 31 is fixed with driving shaft 2, and inner ring 31 front end is fixedly provided with ring plate 33, the outer ring 32 outside wall surface is fixedly provided with multiple ring array distribution mounting plate 34, the ring plate 33 and each mounting plate 34 are all screw thread connection with fastening bolt one 35.

[0023] The motor shaft body 1 outer wall is fixedly provided with multiple ring array distribution positioning strip 7, the connecting hole 8 is set in the center of the rear end of the driving shaft 2, the connecting hole 8 inner wall is set with the positioning groove 9 of the same number with positioning strip 7, the positioning strip 7 is inserted with the positioning groove 9, and the connection firmness between the driving shaft 2 and the motor shaft body 1 can be improved by the positioning strip 7 and the positioning groove 9.

[0024] The outer wall of the driving shaft 2 is penetrated by a plurality of fastening bolts 10, the driving shaft 2 is detachably fixed with the motor shaft body 1 through the fastening bolts 10, the fastening bolts 10 are distributed at intervals with the plurality of positioning grooves 9, and the staff can conveniently install and dismount the driving shaft 2 and the motor shaft body 1.

[0025] The driving shaft 2 is arranged on the outer wall of the motor shaft body 1, the driving shaft 2 can protect the motor shaft body 1, when the driving shaft 2 is deformed or worn, the staff only needs to unscrew the plurality of fastening bolts 10 between the driving shaft 2 and the motor shaft body 1, and then replace the driving shaft 2, when reinstalling, the staff inserts the connecting holes 8 on the driving shaft 2 into the motor shaft body 1, inserts the positioning grooves 9 into the positioning strips 7, and then screws the plurality of fastening bolts 10, and the bearing reinforcing assembly 3 is arranged on the outer wall of the driving shaft 2 to reinforce, specifically, the inner ring 31 in the bearing reinforcing assembly 3 is fixed with the driving shaft 2, the plurality of mounting plates 34 on the outer ring 32 is connected with the motor body, when the stator in the motor body and the rotor on the motor shaft body 1 produce electromagnetic interaction, the rotor drives the motor shaft body 1 to rotate, so that the driving shaft 2 drives the external structure connected with the driving shaft 2 to rotate, the driving shaft 2 and the inner ring 31 can stably rotate under the support and fixation of the outer ring 32, so that the rotation stability of the driving shaft 2 and the motor shaft body 1 can be improved, and the motor shaft body 1 is provided with a bearing on the outer wall, the bearing is press-fitted in the motor body, so that the connection firmness between the motor shaft body 1 and the motor body can be improved.

[0026] In the embodiment, the outer wall of the driving shaft 2 is processed with an annular groove 5, the annular groove 5 is arranged between the limiting strips 4 and the ring plate 33, the annular groove 5 can place a rubber sealing ring, in actual use, the rubber sealing ring can improve the sealing between the driving shaft 2 and the external structure, and the front end of the driving shaft 2 is processed with a threaded hole 6, the two limiting strips 4 are symmetrically distributed with the threaded hole 6 as the center, and the staff can use bolts to connect the external structure with the threaded hole 6 on the driving shaft 2.

[0027] The outer walls of the motor shaft body 1, the driving shaft 2, the limiting strips 4, the inner ring 31, the outer ring 32, the ring plate 33, the mounting plate 34 and the positioning strip 7 are all coated with wear-resistant paint, the wear-resistant paint is a new type of functional paint with special functions, and has good wear resistance, so that the wear resistance and service life of the surfaces of these parts can be improved.

[0028] Finally, the above only describes preferred embodiments of the utility model, and is not used to limit the utility model, any modification, equivalent replacement, improvement and the like made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A motor shaft assembly, characterized in that: It includes a motor shaft (1) and a drive shaft (2) sleeved on the outside of the motor shaft (1). The outer wall of the drive shaft (2) is fixedly provided with bearing reinforcement components (3) and limiting strips (4) distributed in front and behind. The bearing reinforcement assembly (3) includes an inner ring (31) and an outer ring (32). The inner ring (31) is fixed to the drive shaft (2), and a ring plate (33) is fixedly provided at the front end of the inner ring (31). A plurality of mounting plates (34) arranged in a ring array are fixedly provided on the outer side wall surface of the outer ring (32). Each ring plate (33) and each mounting plate (34) is threaded with a fastening bolt (35).

2. The motor shaft assembly according to claim 1, characterized in that: The outer wall of the drive shaft (2) is machined with an annular groove (5), which is located between the limiting strip (4) and the ring plate (33).

3. A motor shaft assembly according to claim 1, characterized in that: The drive shaft (2) has a threaded hole (6) machined at its front end, and there are two limiting strips (4), which are symmetrically distributed with the threaded hole (6) as the center.

4. A motor shaft assembly according to claim 1, characterized in that: The outer wall of the motor shaft (1) is fixed with a plurality of positioning strips (7) arranged in a ring array. The center of the rear end of the drive shaft (2) is provided with a connecting hole (8). The inner wall of the connecting hole (8) is provided with a number of positioning grooves (9) equal to the number of positioning strips (7). The positioning strips (7) are inserted into the positioning grooves (9).

5. A motor shaft assembly according to claim 4, characterized in that: The outer walls of the motor shaft (1), drive shaft (2), limit strip (4), inner ring (31), outer ring (32), ring plate (33), mounting plate (34) and positioning strip (7) are all coated with wear-resistant paint.

6. A motor shaft assembly according to claim 4, characterized in that: The outer wall of the drive shaft (2) is perforated by fastening bolts two (10). The drive shaft (2) is detachably fixed to the motor shaft (1) by fastening bolts two (10). There are multiple fastening bolts two (10), and multiple fastening bolts two (10) are distributed at intervals with multiple positioning grooves (9).

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