CN111186488A

CN111186488A - Tracked vehicle turns to device

Info

Publication number: CN111186488A
Application number: CN201911332724.5A
Authority: CN
Inventors: 潘佳; 来哲; 陈永刚
Original assignee: Hangzhou Advance Gearbox Group Co Ltd
Current assignee: Hangzhou Advance Gearbox Group Co Ltd
Priority date: 2019-12-22
Filing date: 2019-12-22
Publication date: 2020-05-22

Abstract

A steering device for caterpillar vehicle is composed of an input axle consisting of gear, left clutch and right clutch, the gear on said input axle, which is connected with external power and engaged with gear to transfer power to axle, the gear on axle engaged with gear on left clutch, the gear on left clutch and supported by box body via bearings on both sides of left clutch, the gear engaged with gear to transfer power to axle, the gear on axle engaged with gear on right clutch, the gear engaged with gear on left clutch, the gear engaged with gear on axle when the gear on left clutch and the gear on right clutch are idle, the power transferred to gear and gear combined with them by tooth-inlaid engagement, the gear and gear able to axially slide on axle and relatively rotate, the gear engaged with gear on left output axle, the power is transmitted to the left output shaft, the gear is meshed with the gear on the right output shaft, and the power is transmitted to the right output shaft.

Description

Tracked vehicle turns to device

Technical Field

The invention designs a tracked vehicle steering device, and belongs to the technical field of gearboxes.

Prior Art

Compared with a wheeled vehicle, the tracked vehicle has the advantages of strong off-road performance, heavy load, capability of adapting to severe working environment and the like, thereby being widely applied to the fields of military affairs, industry, agriculture and the like. The tracked vehicle realizes steering by changing the driving force of the tracks on the two sides, and the performance of the tracked vehicle is directly influenced by the quality of the performance of the steering mechanism. At present, most tracked vehicles are disengaged by adopting spline gear combination, and steering is realized by unilateral braking. The steering moment impact is large, the turning radius is large, the service life of the steering mechanism is very short, and the control comfort is very poor. The high-end high-horsepower tracked vehicle adopts a mechanical hydraulic steering mechanism, and power splitting and converging of planetary speed change mechanisms on two sides are realized by using hydraulic equipment such as a hydraulic pump, a hydraulic motor and a hydraulic control valve, so that stepless speed change steering is finally realized. Such steering mechanisms are complex in structure and costly to manufacture and maintain.

Disclosure of Invention

The invention mainly solves the defects in the prior art and provides the tracked vehicle steering mechanism which has the advantages of novel and compact structure, low manufacturing cost, convenient installation, maintenance and use, suitability for various complicated and changeable working environments, better fuel economy and suitability for mass production and processing.

The invention is completed by the following technical scheme. A tracked vehicle steering device comprises an input shaft, a left clutch and a right clutch, wherein the input shaft is provided with a gear, a gear and a gear, the gear is connected with external power, the gear is meshed with the gear to transmit the power into the shaft, the gear on the shaft is meshed with the gear of the left clutch, the gear is arranged on the left clutch and is supported on a box body through bearings on two sides of the gear, the gear is meshed with the gear to transmit the power into the shaft, the shaft is provided with the gear which is meshed with the gear in the right clutch, the gear 16 of the right clutch is supported on the box body through bearings on two sides of the right clutch, the gear is meshed with the gear on the right clutch, when the gear on the left clutch and the gear on the right clutch idle, the gear is meshed with the gear on the shaft, and two sides of the gear are both cog teeth, the power is transmitted to the gear and the gear combined with the power transmission device through tooth-embedded meshing, the gear and the gear axially slide on the shaft and can rotate relatively, the gear is meshed with the gear on the left output shaft to transmit the power to the left output shaft to realize power left-side output, and the gear is meshed with the gear on the right output shaft to transmit the power to the right output shaft to realize power right-side output.

Preferably, the method comprises the following steps: the gear is provided with a shaft collar, the shaft collar can relatively rotate and axially move on the gear, the gear pushes and presses the shaft collar along the axial direction, the left clutch gear is provided with a plurality of steel sheets which can not relatively rotate but can axially move, the gear is provided with a plurality of friction sheets which can not relatively rotate but can axially move, the left clutch gear is provided with a fastening part, a disc spring is further arranged between the fastening part and the friction sheets and can elastically deform along the axial direction, and the shaft collar pushes and presses the steel sheets adjacent to the shaft collar to tightly attach the friction sheets and the steel sheets, so that the left clutch gear is combined with the gear to realize power transmission.

Preferably, the method comprises the following steps: and a gap is reserved between the steel sheet and the friction plate.

The invention has compact and delicate structure, convenient installation, maintenance and operation and high working efficiency, and is suitable for various complicated and severe working environments. The operation is convenient and flexible, the riding is comfortable, and the standardization, serialization and universalization of main parts are realized.

Description of the drawings:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic drive diagram of the present invention configuration;

seventh, detailed description of the invention

The invention will be described in detail below with reference to the attached drawing figures: as shown in fig. 1, power is transmitted to a shaft 2 through a gear 1. The shaft 2 is provided with a gear 1, a gear 3 and a gear 7. Gear 3 meshes with gear 4 on shaft 17 to transmit power to shaft 17, and gear 5 on shaft 17 meshes with left clutch gear 6. The left clutch gear 6 is supported on the case by bearings on both sides thereof. Gear 7 meshes with gear 18 on shaft 20 to transmit power to shaft 20, and gear 19 on shaft 20 meshes with right clutch gear 16. The right clutch gear 16 is supported on the case by bearings on both sides thereof. When the tracked vehicle runs in a normal straight line, the left clutch and the right clutch are in a separated state, the gear 10 is separated from the left clutch gear 6, the gear 11 is separated from the right clutch gear 16, and the left clutch gear 6 and the right clutch gear 16 idle rotate. The gear 1 is engaged with a gear 9 on a shaft 8, both sides of the gear 9 are provided with tooth inserts, and power is transmitted to a gear 10 and a gear 11 which are combined through the tooth inserts. The gear 10 and the gear 11 slide axially on the shaft 8 and can rotate relative to each other. The gear 10 is meshed with a gear 12 on a left output shaft 14, power is transmitted to the left output shaft 14, and left-side output of the power is achieved. The gear 11 is meshed with a gear 13 on a right output shaft 15, power is transmitted to the right output shaft 15, and right-side output of the power is achieved.

As shown in figure 2, when the steering wheel is turned left, an external hydraulic oil cylinder shifting fork is used for pushing the gear 10, and the gear 10 is disengaged from the jaw teeth of the gear 9. The collar 21 is relatively rotatable and axially movable on the gear 10, and the gear 10 pushes the collar 21 in the axial direction. The left clutch gear 6 has a plurality of relatively non-rotatable, axially movable steel plates 22, and the gear 10 has a plurality of relatively non-rotatable, axially movable friction plates 23. The part 25 is fastened to the left clutch gear 6. The disc spring 24 is elastically deformable in the axial direction. The collar 21 pushes the steel plates 22 adjacent to the collar, so that all the friction plates 23 and the steel plates 22 are tightly attached to combine the whole left clutch, namely the left clutch gear 6 and the gear 10, and power transmission is realized. The gear 10 and the gear 11 are rotated in opposite directions. Gear 10 meshes with gear 12 on left output shaft 14, gear 11 meshes with gear 13 on right output shaft 15, the left and right output shafts are rotated in opposite directions, and the tracked vehicle is rotated to the left.

The gear 11 is pushed by an external hydraulic oil cylinder shifting fork, and the tracked vehicle can rotate to the right similarly.

When the tracked vehicle runs in a normal straight line, a gap exists between the steel sheet 22 and the friction sheet 23. When the steering wheel is turned, the gear 10 is disengaged from the jaw teeth of the gear 9, then the gear 10 continuously pushes the collar 21 along the axial direction, the collar 21 pushes the steel sheet adjacent to the collar, and the first steel sheet pushes the friction sheet adjacent to the collar until the gap between the steel sheet 22 and the friction sheet 23 just disappears. Since the forces act mutually, the disc spring 24 also pushes the steel piece nearest thereto with the same pushing force, so that the pressure can be dispersed in the circumferential direction. If the steel sheet has concave-convex warping, the nearest friction sheet can be pushed through the disc spring 24 in a proper posture, so that abnormal sound caused by partial contact between the steel sheet and the friction sheet can be eliminated, and the reliability of the clutch is improved.

Claims

1. A tracked vehicle steering device consists of an input shaft, a left clutch and a right clutch, and is characterized in that the input shaft (2) is provided with a gear (1), a gear (3) and a gear (7), the gear (1) is connected with external power, the gear (3) is meshed with a gear (4) to transmit the power into the shaft (17), a gear (5) on the shaft (17) is meshed with a gear (6) of the left clutch, the gear (6) is arranged on the left clutch and supported on a box body through bearings on two sides of the gear, the gear (7) is meshed with the gear (18) to transmit the power into a shaft (20), the shaft (20) is provided with a gear (19), the gear (19) is meshed with a gear (16) in the right clutch, the right clutch gear (16) is supported on the box body through bearings on two sides of the right clutch, and the gear (6) is meshed with the gear (10), gear (16) and gear (11) on the right clutch are engaged with each other, when gear (6) on the left clutch and gear (16) on the right clutch idle, gear (1) and gear (9) on axle (8) mesh, gear (9) both sides are the tooth inlay tooth, through tooth inlay meshing with power transmission with gear (10) and gear (11) that combine with it, but gear (10) and gear (11) axial slip and ability relative rotation on axle (8), gear (10) and gear (12) meshing on the left output shaft (14), pass into left output shaft (14) with power, realize power left side output, gear (11) and gear (13) meshing on the right output shaft (15), pass into right output shaft (15) with power, realize power right side output.

2. Steering device for a tracked vehicle according to claim 1, wherein said toothed wheel (10) is provided with a collar (21), said collar (21) being relatively rotatable and axially movable on said toothed wheel (10), and said toothed wheel (10) being axially pushed against said collar (21), said left clutch gear (6) being provided with a plurality of relatively non-rotatable but axially movable steel plates (22), said toothed wheel (10) being provided with a plurality of relatively non-rotatable but axially movable friction plates (23), said left clutch gear (6) being provided with a fastening element (25), said fastening element 25 being provided with a disc spring (24) between said friction plates (23), said disc spring (24) being elastically deformable in the axial direction, said collar (21) being pushed against the steel plate (22) adjacent thereto, so as to bring said friction plates (23) and said steel plates (22) into close abutment, so that said left clutch gear (6) engages said teeth (10), and power transmission is realized.

3. Tracked vehicle steering device according to claim 2, characterized in that a gap is present between said steel sheet (22) and the friction sheet (23).