CN218829459U

CN218829459U - Connecting structure of motor output shaft and output gear

Info

Publication number: CN218829459U
Application number: CN202222354157.7U
Authority: CN
Inventors: 郭芷言; 蒋东亮; 赵薇
Original assignee: Hebei Hanguang Heavy Industry Ltd
Current assignee: Hebei Hanguang Heavy Industry Ltd
Priority date: 2022-09-05
Filing date: 2022-09-05
Publication date: 2023-04-07
Anticipated expiration: 2032-09-05

Abstract

The utility model discloses a connecting structure of a motor output shaft and an output gear, belonging to the technical field of connecting transmission, which comprises an output gear, a motor and a shaft holding block; the output gear is coaxially arranged with the output shaft of the motor, and a shaft fastening boss is arranged on one end face opposite to the output shaft of the motor; the output shaft of the motor is clamped between the shaft fastening boss and the shaft holding block. The connecting structure can transmit the torque of the motor to the output gear with smaller axial size, and finally, the torque of the motor is output through the output gear, so that the problem of motor torque output in a small space is solved.

Description

Connecting structure of motor output shaft and output gear

Technical Field

The utility model belongs to the technical field of connect the transmission, concretely relates to connection structure of motor output shaft and output gear.

Background

The connection mode of the output shaft of the motor and other shafts is generally as follows: the connecting sleeve is fixed with the output shaft of the motor through a jackscrew in a connecting mode, and the connecting sleeve is only suitable for the motor with smaller output torque; the coupling has high transmission efficiency and large transmission torque, but the size of the coupling is large. Taking an output shaft with the diameter of 4-11mm and the load rated torque of 2.8N.M as an example, the axial size of the required coupler is 35mm, and the radial size of the required coupler is more than 26mm; the connection mode is only suitable for large-size and large-size motors, and when the diameter of an output shaft of the motor is small, the connection mode is not suitable for key groove forming in order to ensure the strength of the output shaft.

Generally speaking, at present, no connecting structure of the motor output shaft and other shafts can meet the output of the motor torque in the small air.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a connection structure of motor output shaft and output gear, this connection structure fix the output shaft of motor in the one end of output gear, and then can transmit the torque of motor to the less output gear of axial dimension, export motor torque through output gear at last, solved the problem of motor torque output in the little space.

The utility model adopts the following technical scheme:

a connecting structure of a motor output shaft and an output gear comprises the output gear, a motor and a shaft holding block;

the output gear is coaxially arranged with the output shaft of the motor, and a shaft fastening boss is arranged on one end face opposite to the output shaft of the motor;

the output shaft of the motor is clamped between the shaft fastening boss and the shaft holding block.

Further, the shaft fastening boss is provided with a first groove;

the shaft holding block is provided with a second groove;

the output shaft of the motor is clamped between the first groove and the second groove.

Furthermore, a bulge is arranged in the first groove;

the top surface of the protrusion is a plane, and the top surface of the protrusion is in compression joint with a flat position arranged on an output shaft of the motor.

Further, a shaft fastener is also included;

the shaft holding block is fixedly connected with the shaft fastening boss through the shaft fastening piece.

Further, a first fastening hole is formed in the shaft holding block;

the shaft fastening boss is provided with a second fastening hole;

one end of the shaft fastening piece penetrates through the first fastening hole and the second fastening hole in sequence, and the shaft holding block is fixedly connected to the shaft fastening boss.

Further, the second fastening hole is provided with an internal thread;

the shaft fastening piece is provided with an external thread, and the shaft fastening piece is in threaded connection with the second fastening hole.

Further, the first fastening hole is also provided with an internal thread;

the shaft fastener is a screw or bolt.

Further, the first fastening hole is a counter bore;

the shaft fastener is a screw or bolt.

Further, the outer contour of the shaft fastening boss is semicircular.

Has the advantages that:

(1) The utility model discloses a connection structure of motor output shaft and output gear, output gear and the coaxial setting of motor output shaft to output gear is provided with axle fastening boss at a terminal surface relative with the output shaft of motor, and the output shaft of motor presss from both sides tightly between axle fastening boss and axle enclasping piece, because output gear's axial dimension is less, thereby can satisfy the output of motor torque in little space. Moreover, the connecting structure is simple and compact, and is more favorable for the requirement of motor torque output in a small space.

(2) The utility model discloses a connection structure of motor output shaft and output gear, axle fastening boss are provided with first recess, and the piece is provided with the second recess tightly to the axle, and the output shaft of motor passes through frictional force and presss from both sides tightly by between first recess and the second recess, and connection structure is simple and reliable and stable, and the piece is processed easily tightly to axle fastening boss and axle moreover.

(3) The utility model discloses a connection structure of motor output shaft and output gear is provided with the arch in the first recess, and bellied top surface is the plane, and the flat bit architecture crimping of the output shaft of bellied top surface and motor is in the same place, makes the output shaft of motor more reliable with output gear's fixed.

(4) The utility model discloses a connection structure of motor output shaft and output gear, axle embrace tight piece and axle fastening boss and pass through an axle fastener fixed connection, the selection kind of axle fastener is many, for example can be for round pin axle, bolt or steel wire etc. the practicality is strong, moreover, the simple structure of axle fastener to can guarantee that the axle embraces the reliable connection of tight piece and axle fastening boss.

(5) The utility model discloses a connection structure of motor output shaft and output gear, the axle is embraced and is provided with first fastening hole on the piece tightly, is provided with the second fastening hole on the axle fastening boss, and the one end of axle fastener is passed first fastening hole, second fastening hole in proper order after with the axle embrace tightly piece and axle fastening boss fixed connection, this fastening mode is simple reliable, and simple to operate is quick.

(6) The utility model discloses a connection structure of motor output shaft and output gear, first fastening hole and second fastening hole all are provided with the internal thread, and the axle fastener is screw or bolt, and the one end of axle fastener passes first fastening hole, second fastening hole in proper order after through threaded connection with axle locking piece and axle fastening boss fixed connection, this fastening mode is simple and reliable, and simple to operate is quick; simultaneously, the axle fastener can used repeatedly, and this fixed mode also is difficult to damage output gear and the fast fastening through-hole of axle fastening, long service life.

(7) The utility model discloses a connection structure of motor output shaft and output gear, the second is fastened the downthehole internal thread that is provided with, and first fastening hole is the counter sink, easy to process, and the axle fastener is screw or bolt, makes this connection structure simple reliable.

(8) The utility model discloses a connection structure of motor output shaft and output gear, the outline of axle fastening boss is the semicircle ring shape, and consequently the outline of axle fastening piece also can set up to the semicircle ring shape, so, can process out the cylindrical boss that has cylindrical recess earlier in output gear's one end, falls into this cylindrical two halves again, and one of them half becomes axle fastening boss, and another half becomes the axle and embraces the piece of tightly, has facilitated the processing of each connecting piece among this connection structure.

Drawings

Fig. 1 is a schematic structural diagram of a connection structure between a motor output shaft and an output gear according to an embodiment of the present invention;

FIG. 2 is a schematic view of an assembly structure of the axle fastening boss and the axle clasping block in FIG. 1;

FIG. 3 is a front view of the assembly structure of FIG. 2, rotated;

FIG. 4 is a schematic diagram of the output gear of FIG. 1;

fig. 5 is a schematic view of a flat position on the output shaft of the reducer of fig. 1.

The device comprises a motor 1, a speed reducer 2, a speed reducer 3, a speed reducer mounting flange 4, an output gear 5, a shaft holding block 6, a countersunk screw 7, a protrusion 8, a speed reducer output shaft and a shaft fastening boss 9.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings by way of examples.

As shown in fig. 1 to 5, the connection structure of the motor output shaft and the output gear includes a motor 1, a speed reducer 2, an output gear 4, and a shaft clasping block 5, wherein:

the output shaft of the motor is connected with the input shaft of the speed reducer fixed on the mounting flange 3 of the speed reducer, the speed reducer 2 plays a role in reducing speed and increasing torque, and the output shaft 8 of the speed reducer is responsible for transmitting the torque to a required moving part; the output gear 4 and the output shaft 8 of the speed reducer are coaxially arranged, a shaft fastening boss 9 is arranged on one end face, opposite to the output shaft of the speed reducer, of the output shaft of the speed reducer, and the output shaft 8 of the speed reducer is clamped between the shaft fastening boss 9 and the shaft holding block 5.

Since the axial dimension of the output gear 4 is small, the output of the torque of the motor 1 can be satisfied in a small space. Moreover, the connecting structure is simple and compact, and is more favorable for the requirement of motor torque output in a small space.

Specifically, referring to fig. 1-4, axle fastening boss 9 is provided with first recess, the piece 5 is embraced to the axle is provided with the second recess, referring to fig. 3, axle fastening boss 9 and axle are embraced piece 5 and are fixed back with reduction gear output shaft 8 tightly, the top surface of axle fastening boss 9 and the bottom surface that the piece 5 was embraced to the axle can be spaced 1mm, rely on first recess and the frictional force of second recess to reduction gear output shaft 8, press from both sides reduction gear output shaft 8 tightly by between first recess and second recess, this kind of connection structure is simple and reliable and stable, and axle fastening boss 9 and axle are embraced a piece 5 and process easily tightly.

As an improvement, referring to fig. 4, a protrusion 7 is disposed in the first groove, a top surface of the protrusion 7 is a plane, and the top surface of the protrusion 7 is pressed with the flat position of the reducer output shaft 8, so that the reducer output shaft 8 can be clamped between the first groove and the second groove more stably, and the fixing of the reducer output shaft 8 and the output gear 4 is more reliable.

Specifically, referring to fig. 1, the connection structure of the output shaft of the motor and the output gear further comprises a shaft fastening piece, the shaft clasping block 5 is fixedly connected with the shaft fastening boss 9 through the shaft fastening piece, the shaft fastening piece is selected in various types, such as a pin shaft, a bolt, a steel wire and the like, the practicability is high, the structure of the shaft fastening piece is simple, and the reliable connection of the shaft clasping block 5 and the shaft fastening boss 9 can be ensured.

More specifically, referring to fig. 1, 2 and 4, a first fastening hole is formed in the shaft fastening block 5, a second fastening hole is formed in the shaft fastening boss 9, and the shaft fastening member passes through the first fastening hole and the second fastening hole in sequence and then fixedly connects the shaft fastening block 5 and the shaft fastening boss 9. So, the axle fastener of this moment can select for round pin axle or bolt etc. and this fastening mode is simple reliable, and simple to operate is quick. Furthermore, the first fastening hole and the second fastening hole are provided with internal threads, the shaft fastening piece penetrates through the first fastening hole and the second fastening hole in sequence and then is fixedly connected with the shaft clasping block 5 and the shaft fastening boss 9 through threaded connection, at the moment, the shaft fastening piece can be a screw or a bolt and the like, the theoretical minimum axial size of the shaft fastening boss 9 and the shaft clasping block 5 is the radial size of the screw or the bolt, and the axial size of the connection structure of the motor output shaft and the output gear is far smaller than the external size of the coupler under the condition of realizing the same torque transmission. The selection of the bolt or the screw is related to the output torque of the motor 1, and the strength of the bolt or the screw thread can meet the requirement of checking the threaded connection. This fastening mode is simple reliable, and simple to operate is quick, and simultaneously, bolt or screw can used repeatedly, and this fixed mode is also difficult to damage the fastening through-hole of output gear 4 and axle locking piece 5, long service life.

In addition, the second fastening hole is internally provided with an internal thread, and the first fastening hole is a countersunk hole, so that compared with the mode that the first fastening hole and the second fastening hole are internally provided with the internal thread, the fastening structure is easier to process, and the shaft fastening piece is a screw or a bolt, so that the connecting structure is simple and reliable. This embodiment takes this form and uses a countersunk head screw 6 as the shaft fastener.

In addition, as shown in fig. 1 and fig. 2, the outer contour of the shaft fastening boss 9 is semi-circular, so that a cylindrical boss with a cylindrical groove can be machined at one end of the output gear 4, and then the cylindrical boss is divided into two halves, wherein one half is the shaft fastening boss 9 fixedly connected with the output gear 4, and the other half is the shaft holding block 5, which facilitates the machining of the connecting structure component.

In the present embodiment, the motor output shaft may be a rotating shaft of the motor 1 itself or a reducer output shaft 8 using the motor 1 as a power input source, but in the present embodiment, the reducer output shaft 8 is taken as an example for description.

In summary, the above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A connecting structure of a motor output shaft and an output gear is characterized by comprising the output gear, a motor and a shaft holding block;

2. A connecting structure of an output shaft of a motor and an output gear as claimed in claim 1, wherein said shaft fastening boss is provided with a first groove;

the shaft holding block is provided with a second groove;

3. A connecting structure of an output shaft of a motor and an output gear as claimed in claim 2, wherein a projection is provided in said first recess;

4. A connecting structure of an output shaft of a motor and an output gear according to any one of claims 1 to 3, further comprising a shaft fastening member;

5. The connecting structure of the motor output shaft and the output gear as claimed in claim 4, wherein the shaft hugging block is provided with a first fastening hole;

the shaft fastening boss is provided with a second fastening hole;

6. The structure for connecting the output shaft of the motor and the output gear as claimed in claim 5, wherein the second fastening hole is provided with an internal thread;

7. The structure for connecting the output shaft of the motor and the output gear as claimed in claim 6, wherein the first fastening hole is also provided with an internal thread;

the shaft fastener is a screw or bolt.

8. The connecting structure of the motor output shaft and the output gear as claimed in claim 6, wherein the first fastening hole is a counterbore;

the shaft fastener is a screw or bolt.

9. A connecting structure of an output shaft of a motor and an output gear as claimed in any one of claims 1 to 3 and 5 to 8, wherein an outer contour of said shaft fastening boss is a semicircular ring shape.