CN214698900U

CN214698900U - Gearbox brake structure

Info

Publication number: CN214698900U
Application number: CN202120764364.2U
Authority: CN
Inventors: 邢立成; 周毅; 于长庆; 顾森
Original assignee: Jiangsu World Agricultural Machinery Co Ltd
Current assignee: Jiangsu World Agricultural Machinery Co Ltd
Priority date: 2021-04-14
Filing date: 2021-04-14
Publication date: 2021-11-12
Anticipated expiration: 2031-04-14

Abstract

The utility model relates to a vehicle parking braking technical field, concretely relates to gearbox brake structure. A transmission brake structure comprising: a limit gear mounted on a shaft of the gearbox in rotation; the locking piece is arranged corresponding to the limiting gear and is assembled in a hinged mode, a locking part is formed on one side, close to the limiting gear, of the locking piece, and the locking part can extend into a gear groove of the limiting gear to lock the limiting gear; and the braking part drives the locking piece to deflect through the transmission assembly so that the locking piece locks the limiting gear. The technical problems of complex structure and high cost of the brake structure of the crawler harvester in the prior art are solved.

Description

Gearbox brake structure

Technical Field

The utility model relates to a vehicle parking braking technical field, concretely relates to gearbox brake structure.

Background

At present, domestic harvester technical development is rapid, and on the existing market, two kinds of brake structures are generally adopted to the track harvester: one is to use the brake hydraulic cylinder to push the brake pad to brake the wheel shaft of the gearbox, the other is a dry brake disc assembled on the side surface of the gearbox, the dry brake disc is arranged on a shaft extending out of the gearbox, and the braking effect is achieved through the friction of the brake disc. These two structures are complex and costly.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems of complicated structure and high cost of the brake structure of the crawler harvester in the prior art, the utility model provides a gearbox brake structure, which solves the technical problems. The technical scheme of the utility model as follows:

a transmission brake structure comprising:

a limit gear mounted on a shaft of the gearbox in rotation;

the locking piece is arranged corresponding to the limiting gear and is assembled in a hinged mode, a locking part is formed on one side, close to the limiting gear, of the locking piece, and the locking part can extend into a gear groove of the limiting gear to lock the limiting gear;

and the braking part drives the locking piece to deflect through the transmission assembly so that the locking piece locks the limiting gear.

The utility model discloses a gearbox brake structure adopts limit gear and locking piece cooperation, makes the axle of gearbox stop rotating through the lock head of locking piece stretches into the tooth's socket of limit gear, realizes the brake, need not to adopt hydraulic cylinder and brake disc structure, simple structure, and is with low costs; the limiting gear, the locking piece and the transmission assembly are all mechanical structures, and the stability is good.

According to an embodiment of the invention, the limit gear is assembled by splines on the shaft of the gearbox.

According to the utility model discloses an embodiment, be provided with the locking round pin on the locking portion.

According to the utility model discloses an embodiment, limit gear and locking piece are two at least, transmission assembly is in the drive of braking portion can drive all locking piece simultaneous movement.

According to the utility model discloses an embodiment, transmission assembly includes the revolving axle, the revolving axle is rotated the assembly, be connected with first crank arm and second crank arm on the revolving axle, braking portion is through the drive first crank arm drives the revolving axle rotates, the second crank arm follows the revolving axle rotates and drives the locking piece deflects.

According to an embodiment of the present invention, the first crank arm is connected to the brake portion through a pull cord.

According to the utility model discloses an embodiment, the second turning arm pass through the pull rod with the locking piece is connected, the both ends of pull rod respectively with the second turning arm the locking piece is articulated.

According to the utility model discloses an embodiment, pull rod length is variable, the pull rod includes two at least sub-pull rods, adjacent sub-pull rod head and the tail spiro union.

According to the utility model discloses an embodiment, still include the piece that resets, the piece that resets does the locking piece provides the effort that resets.

According to an embodiment of the present invention, the return member is a return spring.

Based on the technical scheme, the utility model discloses the technological effect that can realize does:

1. the utility model discloses a gearbox brake structure adopts limit gear and locking piece cooperation, makes the axle of gearbox stop rotating through the lock head of locking piece stretches into the tooth's socket of limit gear, realizes the brake, need not to adopt hydraulic cylinder and brake disc structure, simple structure, and is with low costs; the limiting gear, the locking piece and the transmission assembly are all mechanical structures, so that the stability is good;

2. the gearbox brake structure of the utility model is provided with at least two limiting gears and locking pieces, the transmission assembly can drive all the locking pieces to move synchronously, so that synchronous locking is realized, and the locking effect is better;

3. the transmission brake structure of the utility model reasonably sets the structure of the transmission assembly, the transmission assembly comprises a revolving shaft and a first crank arm and a second crank arm on the revolving shaft, and the revolving shaft rotates under the driving of the brake part to drive all the second crank arms on the revolving shaft to synchronously swing and further drive the locking piece to deflect; the first crank arm is further connected with the braking part through a pull wire, and the pull wire is of a flexible structure and can ensure the pulling effect of the braking part on the first crank arm; the second crank arm is connected with the locking piece through the pull rod, and the pulling effect of the second crank arm on the locking piece is guaranteed. The length of the pull rod is further variable, the pull rod comprises at least two sub-pull rods, the adjacent sub-pull rods are in threaded connection, and the length of the pull rod can be controlled by controlling the threaded connection depth of the sub-pull rods so as to enhance the applicability of the pull rod;

4. the utility model discloses a gearbox brake structure still includes the piece that resets, and when need not the braking, the piece that resets can provide the effort that resets for the lock piece, makes the skew limit gear of lock piece, and the axle of derailleur can normally rotate.

Drawings

Fig. 1 is a schematic structural view of a transmission brake structure of the present invention;

FIG. 2 is a state diagram of the transmission brake configuration in an unbraked condition;

FIG. 3 is a state diagram of the transmission brake configuration in a braking condition;

in the figure: 1-a limit gear; 2-a lock; 21-a locking pin; 3-a transmission assembly; 31-a rotating shaft; 32-a first crank arm; 33-a second crank arm; 34-a pull line; 35-a pull rod; 4-a gearbox; 41-axis; 5-a reset piece.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

As shown in fig. 1-3, this embodiment provides a transmission brake structure, including limit gear 1 and locking piece 2, limit gear 1 is assembled on the axle 41 of the gearbox 4 that stretches out the box along with rotating, and locking piece 2 corresponds limit gear 1 and sets up, and locking piece 2 is articulated and is assembled, and under the drive of braking portion, locking piece 2 can stretch into limit gear 1's the interior locking limit gear 1 of the tooth's socket, and then locks gearbox 4's axle 41, makes its stall.

The limit gear 1 is fitted with the shaft 41 of the transmission case 4 extending out of the case body in a following manner, specifically, the limit gear 1 is fitted with the shaft 41 through splines, and when the shaft 41 rotates, the limit gear 1 thereon also rotates; when the limit gear 1 is locked to stop rotating, the shaft 41 is also locked to stop rotating.

The locking piece 2 is articulated to be assembled, and in this embodiment, the locking piece 2 is articulated to be assembled on gearbox 4, and the locking portion is formed with on one side of locking piece 2 that is close to limit gear 1, and the locking portion can stretch into in limit gear 1's the tooth's socket with limit gear 1. Specifically, the locking piece 2 assembles in limit gear 1's periphery, and the one end of locking piece 2 is articulated the assembly, and the other end of locking piece 2 is driven the beat by drive assembly 3 to make the locking portion of locking piece 2 stretch into or deviate from limit gear 1's tooth's socket.

As a preferred technical solution of this embodiment, the locking portion of the locking member 2 is provided with a locking pin 21, and when the transmission assembly 3 drives the locking member 2 to swing, the locking pin 21 can extend into the tooth space of the limit gear 1 to lock the limit gear 1.

As the preferred technical scheme of this embodiment, limiting gear 1 and locking piece 2 all are two at least, and the one-to-one setting, and at least two limiting gear 1 and locking piece 2 distribute the both sides that set up at gearbox 4, and all locking pieces 2 simultaneous movement. In this embodiment, the limiting gear 1 and the locking member 2 are both two and symmetrically assembled on two sides of the transmission case 4.

Under the drive of the braking part, the transmission component 3 drives all the locking pieces 2 to synchronously swing. The transmission assembly 3 comprises a rotating shaft 31, the rotating shaft 31 is rotatably assembled, a first crank arm 32 and a second crank arm 33 are connected to the rotating shaft 31, the first crank arm 32 and the second crank arm 33 are both rotatably assembled on the rotating shaft 31, the braking portion drives the rotating shaft 31 to rotate through the first crank arm 32, and the rotating shaft 31 drives the locking member 2 to deflect through the second crank arm 33. The second crank arms 33 are arranged corresponding to the locking pieces 2, and each second crank arm 33 correspondingly drives one locking piece 2 to deflect.

As a preferable technical solution of the present embodiment, the first crank arm 32 is connected to the braking portion through the pulling wire 34, and the braking portion drives the first crank arm 32 to swing through the pulling wire 34, and the rotating shaft 31 rotates along with the first crank arm; the second crank arm 33 is connected with the locking piece 2 through a pull rod 35, two ends of the pull rod 35 are respectively hinged with the second crank arm 33 and the locking piece 2, when the rotating shaft 31 rotates, the second crank arm 33 deflects, and the pull rod 35 pulls the locking piece 2 to deflect.

As a preferred solution of this embodiment, the pull rod 35 may be configured to have a variable length, specifically, the pull rod 35 includes at least two sub-pull rods, adjacent sub-pull rods are screwed end to end, and the length of the pull rod 35 may be adjusted by adjusting the screw depth of the two sub-pull rods.

In order to reset the latch member 2, the transmission brake arrangement of this embodiment further includes a reset member 5 to provide a reset force to the latch member 2. In this embodiment, reset 5 and lie in the opposite side of keeping away from limit gear 1 of locking piece 2, reset 5's one end and act on gearbox 4, reset 5's the other end and act on locking piece 2, when need not the braking, reset 5 provides the effort that resets for locking piece 2, makes locking pin 21 of locking piece 2 break away from limit gear 1's tooth's socket. The return member 5 may be selected from, but not limited to, a spring.

Based on the structure, the operating principle of the transmission brake structure of the embodiment is as follows: when the crawler harvester needs braking in the normal running process, the braking part can be operated, the braking part pulls the first crank arm 32 to deflect through the pull wire 34, the rotating shaft 31 rotates along with the first crank arm, the second crank arm 33 on the rotating shaft 31 deflects to pull the pull rod 35, the pull rod 35 pulls the locking piece 2 to deflect towards the limiting gear 1, the locking pin 21 on the locking piece 2 extends into the tooth groove of the limiting gear 1 to lock the limiting gear 1, the shaft 41 stops rotating, the gearbox 4 does not output power any more, and the braking effect is achieved.

When braking is not needed, the braking part can be released, the locking piece 2 is driven by the reset piece 5 to be far away from the limiting gear 1 to deflect, the locking pin 21 on the locking piece 2 is separated from the tooth groove of the limiting gear 1, and the limiting gear 1 and the shaft 41 can normally rotate.

The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. A transmission brake structure, comprising:

a limit gear (1), the limit gear (1) being fitted with rotation on a shaft (41) of the gearbox (4);

the locking piece (2) is arranged corresponding to the limiting gear (1), the locking piece (2) is assembled in a hinged mode, a locking part is formed on one side, close to the limiting gear (1), of the locking piece (2), and the locking part can extend into a tooth groove of the limiting gear (1) to lock the limiting gear (1);

and the braking part drives the locking piece (2) to deflect through the transmission assembly (3) so that the locking piece (2) locks the limiting gear (1).

2. A transmission brake arrangement according to claim 1, characterised in that the limit gear (1) is splined on the shaft (41) of the transmission (4).

3. A transmission brake arrangement according to claim 1, characterised in that the locking portion is provided with a locking pin (21).

4. The gearbox brake structure according to claim 1, wherein the number of the limiting gears (1) and the number of the locking members (2) are at least two, and the transmission assembly (3) can drive all the locking members (2) to move synchronously under the driving of the braking portion.

5. The brake structure of a gearbox as recited in claim 1 or 4, characterized in that said transmission assembly (3) comprises a rotation shaft (31), said rotation shaft (31) is rotatably assembled, a first crank arm (32) and a second crank arm (33) are connected to said rotation shaft (31), said brake part drives said rotation shaft (31) to rotate by driving said first crank arm (32), and said second crank arm (33) drives said locking member (2) to deflect along with the rotation of said rotation shaft (31).

6. A transmission brake arrangement according to claim 5, characterised in that the first lever arm (32) is connected to the brake by a pull cord (34).

7. The gearbox brake structure according to claim 5, wherein the second crank arm (33) is connected with the locking member (2) through a pull rod (35), and two ends of the pull rod (35) are respectively hinged with the second crank arm (33) and the locking member (2).

8. A gearbox brake structure as defined in claim 7, characterized in that said tie rod (35) is of variable length, said tie rod (35) comprising at least two sub-tie rods, adjacent sub-tie rods being screwed end to end.

9. A transmission brake arrangement according to claim 1, further comprising a reset member (5), the reset member (5) providing a reset force to the latch member (2).

10. A transmission brake arrangement according to claim 9, characterised in that the return member (5) is a return spring.