CN217633684U - Gear train with release mechanism - Google Patents

Abstract

The utility model discloses a gear train with a disengaging mechanism, which comprises a main support frame, an outer shell and an outer shell cover, wherein the outer shell and the outer shell cover are respectively positioned at two ends of the main support frame; an input shaft is arranged on the main support frame, the input shaft is positioned in the outer shell, a sun wheel is arranged on the input shaft, and the sun wheel is meshed with a planet wheel; the sun wheel can move along the axial direction of the input shaft and synchronously rotate with the input shaft, and the planetary gear transmission mechanism further comprises a disengaging mechanism which is used for pushing the sun wheel to move along the input shaft and disengage from the planetary gear. The utility model discloses simple structure, the operation that occupation space is littleer is more simple, can improve the operating efficiency.

Description

Gear train with disengagement mechanism

Technical Field

The utility model relates to a power drive, concretely relates to gear train with release mechanism.

Background

The gear train is a general term for gear classification, and comprises two series of fixed shaft gear trains and planetary gear trains, can realize shunt transmission and variable transmission, is used as an intermediate device for transmitting the motion and power of a prime mover to a working mechanism, and is often applied to various mechanical equipment. Such as tractors, forklifts, etc., which include independent powered drive of each wheel of the vehicle, these types of vehicles are preferably moved from one job site to another by high speed towing. To be able to be towed at high speeds when the vehicle is not powered, the tires and their output shafts must be disengaged from the gear train and prime mover so that the tires are not subject to the resistance of the gear train and prime mover.

The gear train disengagement mechanisms currently on the market all push the input shaft away to disengage the gear train. Chinese patent document CN211574211U discloses a speed reducer convenient for disengaging from a motor, which comprises a motor output shaft and a speed reducer connected with the motor output shaft, wherein a primary sun gear and a primary planet gear are arranged in the speed reducer, the primary sun gear is meshed with the primary planet gear, a primary sun gear main shaft is connected with the motor output shaft through a spline sleeve, the spline sleeve is sleeved outside the motor output shaft and the primary sun gear main shaft, a spring is arranged between the primary sun gear main shaft and the motor output shaft, an end cover is arranged on one side of the speed reducer, an adjusting plate is arranged on one side of the end cover away from the speed reducer, an adjusting protrusion is arranged on the adjusting plate, a pin shaft hole is arranged on the end cover corresponding to the adjusting plate, an adjusting pin shaft is arranged in the pin shaft hole, and an axial spring structure is arranged together with the adjusting plate. Normally, the adjusting bulge is exposed outside the reduction gearbox; when the speed reducer needs to be separated due to failure, the adjusting protrusion of the adjusting plate faces the speed reducer, the adjusting plate is pressed into the pin shaft hole through the screw until the adjusting plate is completely attached to the end cover surface, the first-stage sun gear is just separated from the first-stage planet gear at the moment and is not meshed, and the separation of the speed reducer from the motor is realized. If the adjusting bulge of the adjusting plate faces outwards, the primary sun gear main shaft is reset under the action of the spring and meshed with the primary planet gear to return to a normal state.

This prior art has the following disadvantages:

1. the structure is complex, and the occupied space is large;

2. when the separation and the return are performed, the operation is complicated, and the operation efficiency is lowered.

SUMMERY OF THE UTILITY MODEL

The utility model provides a gear train with a disengaging mechanism, which comprises a main support frame, an outer shell and an outer shell cover, wherein the outer shell and the outer shell cover are respectively positioned at two ends of the main support frame;

the main support frame is provided with an input shaft, the input shaft is positioned in the outer shell, the input shaft is provided with a sun wheel, and the sun wheel is meshed with a planet wheel;

the sun wheel can move along the axial direction of the input shaft and synchronously rotate with the input shaft, and the planetary gear transmission mechanism further comprises a disengaging mechanism which is used for pushing the sun wheel to move along the input shaft and disengage the planetary gear.

Preferably, a movable groove is formed in the end, provided with the sun gear, of the input shaft along the axial direction, a connecting through hole extending along the axial direction is formed in the side wall of the movable groove, a fixing piece is arranged in the connecting through hole, and the connecting end of the fixing piece penetrates through the connecting through hole to be connected with the sun gear and can drive the sun gear to move along the connecting through hole. In this scheme, set up the movable groove in the input shaft after, utilize the mounting to realize being connected of sun gear and input shaft, when the input shaft rotates, the sun gear just also can rotate in step, simultaneously because the mounting sets up in connect the via hole, consequently when the mounting removes in connect the via hole, can drive the sun gear and remove to throw off the planet wheel, simple structure.

Preferably, the disengaging mechanism comprises a pushing piece inserted into the input shaft, and the pushing piece abuts against the fixed piece and pushes the fixed piece to move in the movable groove. In the scheme, the pushing piece inserted into the input shaft is used for pushing the fixing piece to move, and the structure is simple.

Preferably, the bottom of the movable groove is provided with a return piece which is propped against the fixed piece. In this scheme, the setting of returning the position piece can make the mounting get back to initial position, easy operation automatically.

Preferably, the disengagement mechanism comprises a drive member provided on the housing cover, the drive member being arranged to drive the insertion of the push member into the input shaft upon counter-clockwise rotation of the drive member. In this scheme, after setting up the driving piece, can realize through the mode of rotatory driving piece that throw off of sun gear and planet wheel, easy operation.

Preferably, the driving member is a knob attached to the housing cover, and the inner surface of the driving member is provided with a spiral boss which is raised when the driving member is rotated counterclockwise. In the scheme, the spiral boss is matched with the pushing piece to drive the pushing piece to be inserted into the input shaft, and the structure is simple.

The utility model discloses following beneficial effect has:

1. compared with the structure that pushes away the input shaft and throw off the gear train among the prior art, the utility model discloses in, adopt the mode that promotes the sun gear to realize throwing off or meshing between sun gear and the gear train, simple structure, occupation space is littleer.

2. In this scheme, can realize the declutching or the meshing of sun gear through the rotation of driving piece, the operation is more simple, can improve the operating efficiency.

Drawings

FIG. 1 is a top view of a gear train with a disengagement mechanism of the present invention;

FIG. 2 isbase:Sub>A cross-sectional view A-A of FIG. 1;

fig. 3 is a sectional view of B-B in fig. 1.

Detailed Description

1. Definition of

A gear train: the gear train is a general name for gear classification, and comprises a fixed shaft gear train and a planetary gear train, and can realize shunt transmission and variable transmission.

Sun gear: in the planetary gear train, an outer gear serving as a sun gear is called a sun gear.

Planet wheel: planetary gears are gear systems whose axes of rotation follow the axis of the carrier around the other gears, in addition to being able to rotate around their own axis of rotation like a fixed axis gear. Rotation about its own axis is called "rotation", and rotation about the other gear axes is called "revolution", just like a planet in the solar system, and hence the name.

Axial direction: the cylinder rotates in the direction of the central axis, i.e. in a common direction with the central axis.

Pin shaft: the pin shaft is a standard fastener, can be statically and fixedly connected, can also move relative to a connected piece, and is mainly used at the hinged part of two parts to form hinged connection.

2. The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: planet wheel 1, sun gear 2, return piece 3, mounting 4, impeller 5, driving piece 6, input shaft 7, shell cover 8, shell body 9, main tributary strut 10.

The embodiment is substantially as shown in figures 1, 2 and 3 of the accompanying drawings: a gear train with a disengagement mechanism includes a main support frame 10, an outer case 9, and an outer case cover 8, the outer case 9 and the outer case cover 8 being respectively located at both ends of the main support frame 10.

An input shaft 7 is arranged on the main support frame 10, the input shaft 7 is positioned in the outer shell 9, a sun wheel 2 is arranged on the input shaft 7, the sun wheel 2 is meshed with the planet wheel 1, and the diameter of one end, provided with the sun wheel 2, of the input shaft 7 is smaller than that of the other end of the input shaft.

Sun gear 2 can follow 7 axial displacement of input shaft and rotate with input shaft 7 synchronous, and is concrete, and the activity groove has been seted up along the axial to the one end that input shaft 7 set up sun gear 2, and the connect the via hole that extends along the axial is seted up to the lateral wall in activity groove, is equipped with mounting 4 in the connect the via hole, and the link of mounting 4 passes connect the via hole to be connected with sun gear 2 and can drive sun gear 2 and remove along the connect the via hole, and mounting 4 is sun gear round pin axle.

A disengagement mechanism is also included for urging the sun gear 2 along the input shaft 7 and disengaging the planet gears 1. The releasing mechanism comprises a pushing piece 5 inserted into an input shaft 7 and a driving piece 6 arranged on an outer shell cover 8, wherein the pushing piece 5 is abutted against the fixing piece 4 and pushes the fixing piece 4 to move in the movable groove, and the pushing piece 5 is a plunger piston. The bottom of the movable groove is provided with a return part 3 which props against the fixed part 4, and the return part 3 is a sun wheel return spring. The driving member 6 drives the pushing member 5 to be inserted into the input shaft 7 when rotating counterclockwise, specifically, the driving member 6 is a knob connected to the housing cover 8, and the inner surface of the driving member 6 is provided with a spiral boss which is raised when the driving member 6 rotates counterclockwise.

The specific implementation process is as follows: the sun gear 2 is in an initial position when being meshed, when the sun gear 2 needs to be completely separated, the driving piece 6 is rotated, so that the spiral boss in the driving piece 6 is lifted, the pushing piece 5 is extruded to move leftwards, the pushing piece 5 moving leftwards pushes the fixing piece 4 to move leftwards, and the fixing piece 4 can drive the sun gear 2 to move leftwards when moving leftwards, so that the sun gear 2 is not meshed with the planet gear 1 any more, and the sun gear is separated from the gear train.

When the sun gear 2 needs to be meshed with the gear train again, the driving piece 6 is rotated reversely, the boss is lowered, the pushing piece 5 is not extruded any more, the fixing piece 4 moves rightwards under the action of the return piece 3, the fixing piece 4 moves rightwards to drive the sun gear 2 to move rightwards, the sun gear 2 is meshed with the planet gear 1 again, the gear train is returned, and the machine can run normally. Meanwhile, the fixing piece 4 moves rightwards to push the pushing piece 5 to move rightwards and abut against the boss.

The above description is only for the embodiments of the present invention, and the common general knowledge of the known specific structures and characteristics in the schemes is not described herein too much, and those skilled in the art will know all the common technical knowledge in the technical field of the present invention before the application date or the priority date, can know all the prior art in this field, and have the ability to apply the conventional experimental means before this date, and those skilled in the art can combine their own ability to perfect and implement the schemes, and some typical known structures or known methods should not become obstacles for those skilled in the art to implement the present application. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims (6)

1. A gear train with a disengagement mechanism includes a main support frame, an outer case, and case covers, which are respectively located at both ends of the main support frame;

an input shaft is arranged on the main support frame, the input shaft is positioned in the outer shell, a sun wheel is arranged on the input shaft, and a planet wheel is meshed with the sun wheel;

the method is characterized in that: the sun wheel can move along the axial direction of the input shaft and synchronously rotate with the input shaft, and the planetary gear transmission mechanism further comprises a disengaging mechanism which is used for pushing the sun wheel to move along the input shaft and disengaging the planetary gears.

2. The gear train with disengagement mechanism of claim 1, wherein: the input shaft sets up movable groove has been seted up along the axial to the one end of sun gear, the connecting hole along axial extension is seted up to the lateral wall in movable groove, be equipped with the mounting in the connecting hole, the link of mounting passes connecting hole is connected with the sun gear and can drives the sun gear is followed connecting hole removes.

3. The gear train with disengagement mechanism of claim 2, wherein: the disengaging mechanism comprises a pushing piece inserted into the input shaft, and the pushing piece is abutted against the fixing piece and pushes the fixing piece to move in the movable groove.

4. The gear train with disengagement mechanism of claim 3, wherein: and a return part which is propped against the fixing part is arranged at the bottom of the movable groove.

5. Gear train with disengagement mechanism according to claim 3 or 4, characterized in that: the disengaging mechanism also comprises a driving piece arranged on the shell cover, and the driving piece can drive the pushing piece to be inserted into the input shaft when rotating anticlockwise.

6. The gear train with disengagement mechanism of claim 5, wherein: the driving piece is a knob connected to the shell cover, a spiral boss is arranged on the inner surface of the driving piece, and when the driving piece rotates anticlockwise, the boss rises.

Images