CN115045965B

CN115045965B - Crawler-type steering shaft assembly and agricultural gearbox

Info

Publication number: CN115045965B
Application number: CN202210814694.7A
Authority: CN
Inventors: 黄泽伟
Original assignee: Chuzhou Yueda Industrial Co ltd
Current assignee: Chuzhou Yueda Industrial Co ltd
Priority date: 2022-07-11
Filing date: 2022-07-11
Publication date: 2023-02-03
Anticipated expiration: 2042-07-11
Also published as: CN115045965A

Abstract

The invention discloses a crawler-type steering shaft assembly and an agricultural gearbox, which comprise a gearbox shell, a transmission shaft and an elastic part, wherein one end of the elastic part is abutted against a gear separating ring, the other end of the elastic part is fixedly arranged on a clutch gear, the clutch gear can be meshed with a driving gear, the clutch gear moves towards the gear separating ring under the driving force of a shifting fork, and the gear separating ring moves towards a friction plate through a release assembly so as to reduce the elasticity of the elastic part relative to the clutch gear. According to the crawler-type steering shaft assembly and the agricultural gearbox, the driving force of the clutch gear is reduced, the elastic deformation of the elastic piece can be reduced, the service life of the elastic piece is prolonged, the blocking piece can move towards the direction of the friction plate, the displacement of the elastic piece is reduced, the elasticity of the elastic piece relative to the clutch gear can be reduced, the steering power of the steering assembly is integrally improved, and the service life of the elastic piece is prolonged.

Description

Crawler-type steering shaft assembly and agricultural gearbox

Technical Field

The invention relates to the technical field of gearboxes, in particular to a crawler-type steering shaft assembly and an agricultural gearbox.

Background

It is known that, the rotation principle of the existing crawler-type transmission is to drive the jogged gear to engage on the driving gear by shifting the steering fork, and to transmit power to realize steering, the transmission generally performs reversing rotation speed, the shifting fork is controlled by the oil pressure box, so that the shifting fork drives the clutch gear to engage with the power gear, so as to transmit power to the multi-shaft gear through the clutch gear, and then to the transmission gear of the half shaft through the multi-shaft gear, therefore, crawler transmission is realized, and further steering is performed, and in the existing transmission, in order to realize that the clutch gear is engaged with the driving gear without being affected by the oil pressure shifting fork, so as to avoid the friction plate of the clutch gear from contacting with the friction plate, and block transmission, a spring is generally arranged on the transmission shaft in the prior art, and the elasticity of the spring can enable the clutch gear to engage on the driving gear, and avoid the contact friction with the friction plate, and realize steering.

The defects of the prior art are as follows: current agricultural gearbox of crawler-type is when braking, then through oil pressure box control shift fork, make the shift fork drive clutch gear to the direction motion of friction disc, promptly, need overcome the elasticity of spring, just can brake, thereby make control hydraulic hydro-cylinder need bigger power control the shift fork, the braking of not only being not convenient for turn to clutch gear, need consume the resistance that the big oil pressure power of wind overcomes the spring moreover, brake the use, the availability factor is lower, be not convenient for its steering spindle subassembly's braking.

Disclosure of Invention

The invention aims to provide a crawler-type steering shaft assembly and an agricultural gearbox, and aims to overcome the defects in the prior art.

In order to achieve the above purpose, the invention provides the following technical scheme:

including the gearbox casing and set up the transmission shaft in the gearbox casing, the both ends of transmission shaft all are provided with the friction disc, still including turning to the subassembly, and its cover is established in the outside of transmission shaft, turn to the subassembly including being used for turning to and the clutch gear of braking, still include the elastic component, just the one end of elastic component is contradicted on separating the shelves ring, and the other end is fixed to be set up on clutch gear, under the elasticity of elastic component, clutch gear can mesh on drive gear, when braking, clutch gear receives the drive power of shift fork to the direction motion that separates the shelves ring to make through the release subassembly and separate the shelves ring towards the friction disc motion, with the elasticity that reduces the relative clutch gear of elastic component.

Preferably, a spring ring is arranged on the inner wall of the clutch gear, one end of the elastic piece is fixedly arranged on the side wall of the spring ring, and the release assembly is located between the spring ring and the barrier ring.

Preferably, the stop ring is limited on the transmission shaft through a stop, and when the spring ring moves towards the stop ring, the release assembly presses the stop so as to enable the stop ring to transversely displace along the transmission shaft;

preferably, a fixed seat is fixedly arranged on the baffle ring, the stop block is arranged in the fixed seat in a sliding manner, a spring is arranged in the fixed seat, and the stop block can be protruded to the fixed seat through the elastic force of the spring so as to be abutted against the baffle surface arranged on the transmission shaft.

Preferably, the release assembly comprises a connecting rod fixedly arranged on the spring ring, an extrusion inclined plane is formed in one end of the connecting rod, a round corner is formed in the stop block, the extrusion inclined plane can extrude the round corner on the stop block, and the stop block moves towards the inside of the fixing seat to gradually separate from the gear separation surface.

Preferably, the transmission shaft is provided with a first sliding groove and a second sliding groove, the first sliding groove and the second sliding groove can slide along the first sliding groove when the stop block is separated from the gear separating surface, and the connecting rod can slide along the second sliding groove.

Preferably, the connecting rod is fixedly provided with a fixed block, and under the action of the fixed block, the connecting rod can drive the stop block to synchronously move towards the friction plate.

Preferably, the inslot rotation in the middle of the dog is provided with the articulated piece of elasticity, just the fixed sleeve that is provided with on the inclined plane of connecting rod, just it is provided with the slip post to slide in the fixed sleeve, just the below protrusion of slip post to the connecting rod when the connecting rod extrudees the dog, the slip post extrudees along the direction of second spout gradually for the slip post moves gradually to in the dog, and the joint in on the articulated piece edges and corners of elasticity, so that separate the shelves ring with the spring ring relatively fixed.

Preferably, the steering assembly further includes an engaging gear fixedly connected to the clutch gear, the driving gear is disposed on the transmission shaft, and the engaging gear can engage with the driving gear under the elastic force of the elastic member to realize power transmission.

An agricultural gearbox comprises the crawler-type steering shaft assembly.

In the technical scheme, the crawler-type steering shaft assembly and the agricultural gearbox provided by the invention have the beneficial effects that:

according to the invention, the baffle ring, the fixed seat and the spring ring are arranged on the transmission shaft, when the sliding column is clamped on the side wall of the elastic hinging block, the baffle ring is relatively fixed under the elastic force of the elastic part, and the fixed seat is also positioned in the first chute, namely, the spring ring, the baffle ring and the elastic part can synchronously move towards the direction of the friction plate under the driving of the clutch gear, namely, the clutch gear does not need to move after extruding the elastic part, so that the driving force of the clutch gear is reduced, the elastic deformation of the elastic part can be greatly reduced, the service life of the elastic part is prolonged, and the baffle block can move towards the direction of the friction plate through the arranged release assembly, therefore, the displacement of the elastic part is reduced, the elastic force of the elastic part relative to the clutch gear can be reduced, the steering power of the steering assembly is integrally improved, and the service life of the elastic part is prolonged.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

This document provides an overview of various implementations or examples of the technology described in this disclosure, and is not a comprehensive disclosure of the full scope or all features of the disclosed technology.

Drawings

In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings required in the embodiments will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.

FIG. 1 is a schematic structural diagram provided in an embodiment of the present invention;

FIG. 2 is a schematic structural view of a transmission shaft and a friction plate according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a steering assembly and a driving gear according to an embodiment of the present invention;

FIG. 4 is a schematic structural view of a retaining ring fixing seat and a stopper according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a connecting rod and a spring ring according to an embodiment of the present invention;

FIG. 6 is a schematic cross-sectional view of a transmission shaft, a spring ring and a stopper ring according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a transmission shaft and a steering assembly according to an embodiment of the present invention;

fig. 8 is a schematic structural view of a stopper ring, a fixing seat and a stopper according to an embodiment of the present invention;

FIG. 9 is a schematic view of a fixed sleeve and a sliding block on an elastic hinge block according to an embodiment of the present invention;

FIG. 10 is a schematic structural diagram of a connecting rod, a fixing sleeve and a sliding column according to an embodiment of the present invention;

FIG. 11 is a partial structural view of a transmission shaft, an elastic member, a barrier ring and a spring ring according to an embodiment of the present invention;

fig. 12 is a schematic structural view of a first sliding chute and a second sliding chute provided in the embodiment of the present invention;

fig. 13 is a schematic view of an enlarged structure at a provided in the embodiment of the present invention.

Description of the reference numerals:

1. a transmission housing; 11. a drive shaft; 12. an outer housing; 2. a steering assembly; 21. a shifting fork; 13. a friction plate; 34. an elastic member; 111. a retainer ring; 22. a clutch gear; 23. a fitting gear; 3. a baffle ring; 31. a fixed seat; 311. a stopper; 3111. an elastic hinge block; 4. a spring ring; 41. a connecting rod; 42. a fixed block; 411. fixing the sleeve; 412. extruding the inclined plane; 4111. a sliding post; 1101. a first chute; 1102. a second chute; 1103. a baffle surface.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.

Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of the word "comprising" or "comprises", and the like, in this disclosure is intended to mean that the elements or items listed before that word, include the elements or items listed after that word, and their equivalents, without excluding other elements or items. The terms "connected" and "coupled" and the like are not restricted to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used only to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

Referring to fig. 1-13, a crawler-type steering shaft assembly and an agricultural gearbox includes a gearbox housing 1 and a transmission shaft 11 disposed in the gearbox housing 1, both ends of the transmission shaft 11 are provided with friction plates 13, and further includes a steering assembly 2 sleeved outside the transmission shaft 11, the steering assembly 2 includes a clutch gear 22 for steering and braking, and further includes an elastic member 34, one end of the elastic member 34 abuts against a gear ring 3, and the other end is fixedly disposed on the clutch gear 22, the clutch gear 22 can be engaged with a driving gear under the elastic force of the elastic member 34, when braking, the clutch gear 22 is driven by a shifting fork 21 to move towards the gear ring 3, and the gear ring 3 is driven to move towards the friction plates 13 by a releasing assembly, so as to reduce the elastic force of the elastic member 34 relative to the clutch gear 22, specifically, both ends of the transmission shaft 11 are provided with the friction plates 13, when the clutch gear 22 is pressed on the friction plate 13, braking can be achieved, by arranging the blocking ring 3, the fixed seat and the spring ring 4 on the transmission shaft 11, then when the sliding post 4111 is clamped on the side wall of the elastic hinge block 3111, and under the elastic force of the elastic piece 34, the blocking ring 3 is relatively fixed, and the fixed seat is also in the first chute 1101 at this time, that is, under the driving of the clutch gear 22, the spring ring 4, the blocking ring 3 and the elastic piece 34 can synchronously move towards the direction of the friction plate 13, that is, the clutch gear 22 does not need to move after pressing the elastic piece 34, so that not only is the driving force of the clutch gear 22 reduced, but also the elastic deformation of the elastic piece 34 can be greatly reduced, and the service life of the elastic piece 34 is prolonged, the blocking block can move towards the direction of the friction plate 13 through the arranged releasing assembly, therefore, the displacement amount of the elastic member 34 is reduced, and the elastic force of the elastic member 34 against the clutch gear 22 can be reduced, thereby improving the steering power of the steering assembly 2 as a whole and prolonging the service life of the elastic member 34.

Further, a spring ring 4 is disposed on the inner wall of the clutch gear 22, and one end of the elastic member 34 is fixedly disposed on the sidewall of the spring ring 4, and the release assembly is located between the spring ring 4 and the blocking ring 3.

Further, the retainer ring 3 is restrained on the drive shaft 11 by the stopper 311, and the stopper 311 is pressed by the release member when the spring ring 4 moves toward the retainer ring 3, so that the retainer ring 3 is laterally displaced along the drive shaft 11.

Furthermore, a fixing seat is fixedly arranged on the barrier ring 3, the stopper 311 is slidably arranged in the fixing seat, a spring is arranged in the fixing seat, and the elastic force of the spring can enable the stopper 311 to protrude out of the fixing seat, so that the stopper 311 abuts against the barrier surface 1103 arranged on the transmission shaft 11.

Further, the releasing component includes a connecting rod 41 fixedly disposed on the spring ring 4, and one end of the connecting rod 41 is provided with an extrusion inclined plane 412, and the stopper 311 is provided with a fillet, and the extrusion inclined plane 412 can extrude the fillet on the stopper 311, so that the stopper 311 moves toward the inside of the fixing seat to gradually separate from the blocking surface 1103.

Further, the transmission shaft 11 is provided with a first sliding groove 1101 and a second sliding groove 1102, respectively, so that when the stopper 311 is separated from the stopper surface 1103, the stopper can slide along the first sliding groove 1101, and the connecting rod 41 can slide along the second sliding groove 1102.

Further, a fixing block 42 is fixedly arranged on the connecting rod 41, and under the action of the fixing block 42, the connecting rod 41 can drive the stopper 311 to synchronously move towards the friction plate 13.

Further, an elastic hinge block 3111 is rotatably disposed in the groove in the middle of the stopper 311, a fixing sleeve 411 is fixedly disposed on the inclined surface of the connecting rod 41, a sliding post 4111 is slidably disposed in the fixing sleeve 411, and the lower portion of the sliding post 4111 protrudes out of the connecting rod 41, when the connecting rod 41 presses the stopper 311, the sliding post 4111 is gradually pressed along the direction of the second sliding slot 1102, so that the sliding post 4111 gradually moves into the stopper 311 and is clamped on the edge of the elastic hinge block 3111, so that the baffle ring 3 and the spring ring 4 are relatively fixed, specifically, as shown in fig. 9, one end of the sliding post 4111 abuts against the elastic hinge block 3111, and the contact surface is in the direction away from the elastic member 34, that is, under the elasticity of spring, keep apart the shelves ring 3 and can drive the articulated piece 3111 of elasticity and contradict on the fixing base, specifically, when slip post 4111 blocks on the lateral wall on the articulated piece 3111 of elasticity, and under the elasticity of elastic component 34, make keep apart the shelves ring 3 and take place relatively fixed, and the fixing base at this moment also is in first spout 1101, under the drive of clutching gear 22 promptly, can make spring ring 4, keep apart shelves ring 3 and elastic component 34 move to the direction of friction disc 13 in step, namely, make the separation and reunion tooth need not carrying out the motion after extrudeing elastic component 34, not only reduced the drive power of clutching gear 22, and can be very big reduce the elastic deformation of elastic component 34, and improve the life of elastic component 34.

Further, the steering assembly 2 further includes an engaging gear 23 fixedly connected to the clutch gear 22, and the driving gear is disposed on the transmission shaft 11, and the engaging gear 23 can engage with the driving gear under the elastic force of the elastic member 34 to realize the power transmission.

Furthermore, the transmission shaft 11 is provided with a retainer ring 111, and after the barrier ring 3 is separated from the barrier surface 1103 and moves, the barrier ring can abut against the sidewall of the retainer ring 111 to buffer the impact of the barrier ring 3.

In the invention, when the clutch gear 22 is not subjected to the shifting force of the shifting fork 21, the embedded gear 23 is engaged on the driving gear under the elastic force of the elastic member 34, and the barrier ring 3 is in the state shown in fig. 6 under the action of the stopper 311, at this time, the stopper 311 is abutted against the barrier surface 1103, at this time, the steering of the crawler machine is realized, then, when braking is performed, the hydraulic oil tank drives the shifting fork 21 to rotate, and shifts the clutch gear 22 and the embedded gear 23 to move axially in the direction away from the driving gear, that is, to move towards the direction close to the friction plate 13, when moving, the spring ring 4 drives the connecting rod 41 connected to move synchronously, that is, the connecting rod 41 gradually presses the stopper 311, then the stopper 311 gradually moves towards the direction of the fixed seat, then gradually disengages from the barrier surface 1103, before complete disengagement, the fillet below the sliding column 4111 is gradually pressed by the groove depth of the second sliding chute 1102 to gradually move upwards, namely, the gear is gradually shifted on the edge of the elastic hinge block 3111, then the spring ring 4 continuously moves, so that the stopper 311 is completely separated from the gear surface 1103, the stopper 311 moves to the first sliding groove 1101, that is, the gear ring 3 can axially slide along the transmission shaft 11, then when the shift fork 21 drives the clutch gear 22 to move, the pressure on the elastic element 34 can be reduced, the elastic element 34 and the gear ring 3 are directly synchronously slid onto the retainer ring 111, the elastic element 34 is not squeezed, the clutch gear 22 is more conveniently in frictional contact with the friction plate 13, and the number of times of elastic deformation of the spring can be reduced, so as to achieve better braking, then when a steering is required, the shift fork 21 drives the clutch gear 22 and the engaging gear 23 to move towards the direction of the driving gear, that is, the connected spring ring 4, elastic element 34 and gear ring 3 are driven to synchronously move, during movement, the stopper 311 slides towards the driving gear along the direction of the first sliding groove 1101, then the sliding column 4111 synchronously slides along the direction of the second sliding groove 1102, when the sliding column 4111 is separated from the second sliding groove 1102, the sliding column 4111 moves downwards under the elastic force of the spring inside the sliding sleeve, that is, the limitation of the elastic hinge block 3111 can be separated, and the stopper 311 is already on the blocking surface 1103 at the moment, then when the sliding column 4111 is separated from the elastic hinge block 3111, that is, the connecting rod 41 is not connected with the stopper 311, then the spring ring 4 is not limited by the sliding column 4111 at the moment, that is, the elastic force acts on the clutch gear 22, so that the clutch gear 22 and the connected embedded gear 23 move towards the driving gear and are meshed with the driving gear, that is, the transmission of the power is realized.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and are not to be construed as limiting the scope of the invention.

Claims

1. The crawler-type steering shaft assembly comprises a gearbox shell (1) and a transmission shaft (11) arranged in the gearbox shell (1), wherein friction plates (13) are arranged at two ends of the transmission shaft (11), the crawler-type steering shaft assembly also comprises a steering assembly (2) which is sleeved outside the transmission shaft (11), the steering assembly (2) comprises a clutch gear (22) used for steering and braking, and the crawler-type steering shaft assembly is characterized in that,

the brake device is characterized by further comprising an elastic piece (34), one end of the elastic piece (34) abuts against the gear separating ring (3), the other end of the elastic piece is fixedly arranged on the clutch gear (22), the clutch gear (22) can be meshed with the driving gear under the elastic force of the elastic piece (34), when the brake device is used for braking, the clutch gear (22) moves towards the gear separating ring (3) under the driving force of the shifting fork (21), and the gear separating ring (3) moves towards the friction plate (13) through the releasing assembly, so that the elastic force of the elastic piece (34) relative to the clutch gear (22) is reduced;

a spring ring (4) is arranged on the inner wall of the clutch gear (22), one end of the elastic piece (34) is fixedly arranged on the side wall of the spring ring (4), and the release assembly is positioned between the spring ring (4) and the baffle ring (3);

the gear ring (3) is limited on the transmission shaft (11) through a stop block (311), and when the spring ring (4) moves towards the gear ring (3), the stop block (311) is pressed through a releasing component, so that the gear ring (3) is transversely displaced along the transmission shaft (11);

the stop ring (3) is fixedly provided with a fixed seat, the stop block (311) is arranged in the fixed seat in a sliding manner, a spring is arranged in the fixed seat, the stop block (311) can protrude out of the fixed seat due to the elasticity of the spring, and the stop block (311) is abutted against a stop surface (1103) arranged on the transmission shaft (11).

2. The tracked steering shaft assembly according to claim 1, wherein the release assembly comprises a connecting rod (41) fixedly arranged on the spring ring (4), one end of the connecting rod (41) is provided with a pressing inclined surface (412), the stop block (311) is provided with a round corner, and the pressing inclined surface (412) can press the round corner on the stop block (311) so that the stop block (311) moves towards the inside of the fixed seat to gradually separate from the stop surface (1103).

3. The tracked steer axle assembly according to claim 2, wherein the drive shaft (11) has a first runner (1101) and a second runner (1102) formed thereon, and wherein the connecting rod (41) is slidable along the first runner (1101) and the second runner (1102) when the stopper (311) is disengaged from the barrier surface (1103).

4. The crawler-type steering axle assembly according to claim 3, characterized in that a fixing block (42) is fixedly arranged on the connecting rod (41), and under the action of the fixing block (42), the connecting rod (41) can drive the stop dog (311) to move towards the friction plate (13) synchronously.

5. The tracked steering shaft assembly according to claim 3, wherein an elastic hinge block (3111) is arranged in the groove in the middle of the stop (311) in a rotating mode, a fixing sleeve (411) is fixedly arranged on the inclined surface of the connecting rod (41), a sliding column (4111) is arranged in the fixing sleeve (411) in a sliding mode, the lower portion of the sliding column (4111) protrudes out of the connecting rod (41), when the connecting rod (41) presses the stop (311), the sliding column (4111) is gradually pressed along the direction of the second sliding groove (1102), so that the sliding column (4111) gradually moves into the stop (311) and is clamped on the edge angle of the elastic hinge block (3111), and the stop ring (3) and the spring ring (4) are fixed relatively.

6. The tracked steering axle assembly according to claim 1, wherein the steering assembly (2) further comprises a jogged gear (23) fixedly connected to the clutch gear (22), and the driving gear is arranged on the transmission shaft (11), and the jogged gear (23) can be meshed with the driving gear under the elastic force of the elastic member (34) so as to realize the transmission of power.

7. An agricultural gearbox comprising a tracked steer axle assembly according to any one of claims 1 to 6.