CN110481638B

CN110481638B - Adjusting mechanism for changing distance between axles of heavy truck

Info

Publication number: CN110481638B
Application number: CN201910834453.7A
Authority: CN
Inventors: 邓孔书; 丁一成; 曾露; 尹祝融
Original assignee: Hunan University of Science and Technology
Current assignee: Hunan University of Science and Technology
Priority date: 2019-09-05
Filing date: 2019-09-05
Publication date: 2021-06-25
Anticipated expiration: 2039-09-05
Also published as: CN110481638A

Abstract

The invention discloses an adjusting mechanism for variable wheel axle spacing of a heavy truck, which comprises a chassis, wherein a driving wheel axle is arranged on the chassis, a driving wheel is arranged on the driving wheel axle, a sliding groove is arranged on the chassis, a driven wheel supporting device is arranged on the sliding groove, the driven wheel supporting device comprises a supporting block sliding along the sliding groove, a driven wheel axle is arranged on the supporting block, a driven wheel is arranged on the driven wheel axle, and a multi-rod lifting mechanism is arranged on the driven wheel axle; and a hydraulic cylinder is hinged between the driven wheel supporting device and the driving wheel shaft. The invention aims to provide an adjusting mechanism for variable wheel axle spacing of a heavy truck, which can properly change the spacing between each pair of tires under a carriage chassis to ensure that the pressure acting on each pair of tires is equal as much as possible, thereby reducing the abrasion of the tires and the phenomenon of rollover.

Description

Adjusting mechanism for changing distance between axles of heavy truck

Technical Field

The invention relates to the technical field of truck transportation, in particular to an adjusting mechanism for changing the distance between axles of a heavy truck.

Background

With the development of the road transportation industry, heavy trucks are more and more favored by vast transport drivers due to the advantages of large disposable cargo capacity, stable performance, high safety and the like. However, if the heavy truck body is longer and the load is too large at one time, the pressure applied to each pair of tires under the carriage is unequal, so that the phenomenon of unbalance loading occurs, the tires are seriously worn due to the excessive unbalance loading, the rollover phenomenon easily occurs when the heavy truck body touches an obstacle, and the problems cannot be solved by the prior art.

Disclosure of Invention

The invention aims to solve the problems and provides an adjusting mechanism for variable wheel axle distance of a heavy truck, which can properly change the front-back distance between each pair of tires under a carriage chassis to ensure that the pressure acting on each pair of tires is equal as much as possible, thereby reducing the abrasion of the tires and the rollover phenomenon.

In order to realize the purpose, the invention adopts the technical scheme that: the chassis is provided with a driving wheel and a driven wheel with adjustable front-back distance along the length direction of the chassis, the driving wheel is arranged on a driving wheel shaft on the chassis, the driven wheel is arranged on a driven wheel supporting device, and the driven wheel supporting device moves along a sliding groove on the chassis, so that the front-back distance between the driving wheel and the driven wheel is adjusted; the driven wheel supporting device comprises a supporting block matched with the sliding groove, a driven wheel shaft is arranged on the supporting block, a driven wheel is arranged on the driven wheel shaft, and a multi-rod lifting mechanism is arranged on the driven wheel shaft; in order to push the supporting block to move along the sliding groove, a hydraulic cylinder is hinged to the driving wheel shaft, and the other end of the hydraulic cylinder is hinged to the supporting block.

Furthermore, the driven wheel supporting device and the sliding grooves are arranged on the front side and the rear side of the driving wheel so as to adapt to a chassis with a long length.

Further, in order to realize self-locking, the multi-rod lifting mechanism comprises a connecting rod A, a connecting rod B, a connecting rod C and a hydraulic push rod, wherein the upper end of the connecting rod A is hinged to the supporting block, the lower end of the connecting rod A is movably connected with the driven wheel shaft, one end of the connecting rod B is hinged to the middle of the connecting rod A and forms a certain angle with the connecting rod A, the other end of the connecting rod B is hinged to one end of the connecting rod C, and the other end of the connecting rod C is hinged to the supporting block; a hydraulic push rod is hinged between the connecting rod A and the connecting rod B, and the hydraulic push rod, the connecting rod A and the connecting rod B are distributed in a triangular shape; when the connecting rod B is collinear with the connecting rod C, the connecting rod A is vertically downward, and the height of the driven wheel shaft is consistent with that of the driving wheel shaft.

Furthermore, in order to simplify the structure, the lower end of the connecting rod A is provided with a cylindrical hole matched with the driven wheel shaft.

Further, be provided with on the supporting shoe and be used for articulating first articulated post and second articulated post with connecting rod A and connecting rod C, connecting rod A and connecting rod C cover are established at first articulated post and second articulated post to realize connecting rod A and connecting rod C's quick installation.

Further, the supporting block includes the sliding seat with spout looks adaptation, the sliding seat lower extreme is provided with the protection shield in driven wheel front and back both sides, is provided with the connecting plate between the protection shield of both sides, connecting rod A upper end articulates on the connecting plate, connecting rod C articulates on the protection shield of one side.

The invention has the beneficial effects that:

1. the front-back distance between the driving wheel shaft and the driven wheel shaft is adjusted under the pushing of the hydraulic cylinder, and the uniform distribution of the load acting on the tire is realized, so that the abrasion of the tire is reduced; the phenomenon of unbalance loading is avoided, and the phenomenon of side turning is effectively prevented.

2. The multi-rod lifting mechanism is arranged, when a hydraulic push rod in the multi-rod lifting mechanism extends, the connecting rod B and the connecting rod C are collinear, the connecting rod A is located in the vertical direction and a ' dead center ' phenomenon (namely a ' dead center ' position) in mechanics ' occurs, and the connecting rod A cannot rotate under the state, so that the positions of the driven wheel shaft and the driven wheel are fixed, and self-locking is achieved.

Drawings

FIG. 1 is a schematic view of the structure of the present invention.

Fig. 2 is a schematic structural view of the chassis of the present invention.

FIG. 3 is a schematic view of the support block structure of the present invention.

Fig. 4 is a schematic structural view of the multi-rod lifting mechanism.

In the figure: 1. a chassis; 2. a drive wheel; 3. a chute; 4. a support block; 5. a driven axle; 6. a driven wheel; 7. a hydraulic cylinder; 8. a connecting rod A; 9. a connecting rod B; 10. a connecting rod C; 11. a hydraulic push rod; 12. a first hinge post; 13. a second hinge post; 14. a sliding seat; 15. a protection plate; 16. a connecting plate.

Detailed Description

The following detailed description of the present invention is given for the purpose of better understanding technical solutions of the present invention by those skilled in the art, and the present description is only exemplary and explanatory and should not be construed as limiting the scope of the present invention in any way.

As shown in fig. 1 to 4, the specific structure of the present invention is: the multi-rod lifting device comprises a chassis 1, wherein a driving wheel shaft is arranged on the chassis 1, driving wheels 2 are arranged on two sides of the driving wheel shaft, the driving wheels 2 are arranged in the middle of the chassis 1, a sliding groove 3 is formed in the chassis 1 along the length direction of the chassis 1, a driven wheel supporting device used for mounting a driven wheel 6 is arranged on the sliding groove 3, the driven wheel supporting device comprises a supporting block 4 sliding along the sliding groove 3, a driven wheel shaft 5 is arranged on the supporting block 4, driven wheels 6 are arranged on two sides of the driven wheel shaft 5, the driving wheel shaft and the driven wheel shaft 5 are both arranged along the width direction of the chassis 1, and a multi-rod lifting mechanism; the driving wheel shaft is hinged with a hydraulic cylinder 7, a piston rod of the hydraulic cylinder 7 is hinged on a supporting beam on the supporting block 4, and the supporting block 4 can be pushed to reciprocate along the sliding groove 3 when the hydraulic cylinder 7 works.

Preferably, the driven wheel supporting device and the sliding groove 3 are arranged on the front side and the rear side of the driving wheel 2.

Preferably, the multi-rod lifting mechanism comprises a connecting rod A8, a connecting rod B9, a connecting rod C10 and a hydraulic push rod 11, wherein the upper end of the connecting rod A8 is hinged on the supporting block 4, the lower end of the connecting rod A8 is movably connected with the driven wheel shaft 5, one end of the connecting rod B9 is hinged in the middle of the connecting rod A8, the other end of the connecting rod B9 is hinged with one end of the connecting rod C10, the connecting rod B9 and the connecting rod C10 can be collinear, and the other end of the connecting rod C10 is hinged on the supporting block 4; one end of the hydraulic push rod 11 is hinged to the position where the connecting rod A8 is hinged to the supporting block 4, and a piston rod of the hydraulic push rod 11 is hinged to the connecting rod B9 and is close to a hinged point of the connecting rod B9 and the connecting rod C10.

Preferably, the lower end of the connecting rod A8 is provided with a cylindrical hole matched with the driven wheel shaft 5.

Preferably, the support block 4 is provided with a first hinge column 12 and a second hinge column 13 which are used for being hinged to a connecting rod A8 and a connecting rod C10, the first hinge column 12 and the second hinge column 13 are cylindrical, round holes matched with the first hinge column 12 are formed in the upper end of the connecting rod A8 and the hydraulic push rod 11, and round holes matched with the second hinge column 13 are formed in the connecting rod C10.

Preferably, the supporting block 4 includes a sliding seat 14 adapted to the sliding groove 3, the lower end of the sliding seat 14 is provided with a protecting plate 15 at the front side and the rear side of the driven wheel 6, a connecting plate 16 is arranged between the protecting plates 15 at the two sides, the upper end of the connecting rod A8 is hinged on the connecting plate 16, and the connecting rod C10 is hinged on the protecting plate 15 at one side.

In the specific implementation: when the pressure applied to the front end of the chassis 1 by goods carried by the heavy truck carriage is greater than the pressure applied to the rear end of the chassis 1, the distance between the driving wheel 2 and the driven wheel 6 at the rear end of the driving wheel is required to be reduced; at the moment, the hydraulic push rod 11 contracts, so that the driven wheel 6 is driven to swing backwards by a small angle, and the driven wheel 6 is separated from the ground; then, the hydraulic cylinder 7 between the driving wheel 2 and the rear driven wheel 6 contracts, and the supporting block 4 at the rear end of the driving wheel 2 is pulled to move towards the driving wheel 2, so that the driven wheel shaft 5 in the direction is moved to a proper position; finally, the hydraulic ram 11 is extended so that link B9 is collinear with link C10, with link a8 in the vertical orientation so that "dead-end" in mechanics occurs (i.e., the "dead-end" position), and link a8 is not able to rotate so that the position of the driven wheel 6 is fixed. When the pressure applied to the front end of the chassis 1 by the goods carried by the heavy truck carriage is smaller than the pressure applied to the rear end of the chassis 1, the distance between the driving wheel 2 and the driven wheel 6 at the front end needs to be reduced, and the specific implementation principle is the same as that of the above.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts of the present invention. The foregoing is only a preferred embodiment of the present invention, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes may be made without departing from the principle of the present invention, and the technical features described above may be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the invention using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments.

Claims

1. A regulating mechanism for variable distance between axles of a heavy truck comprises a chassis (1), wherein a driving axle is arranged on the chassis, and a driving wheel (2) is arranged on the driving axle, and is characterized in that a chute (3) is arranged on the chassis (1), a driven wheel supporting device is arranged on the chute (3), the driven wheel supporting device comprises a supporting block (4) sliding along the chute (3), a driven axle (5) is arranged on the supporting block (4), a driven wheel (6) is arranged on the driven axle (5), and a multi-rod lifting mechanism is arranged on the driven axle (5); a hydraulic cylinder (7) is hinged between the driven wheel supporting device and the driving wheel shaft; the driven wheel supporting device and the sliding groove (3) are arranged on the front side and the rear side of the driving wheel (2); the multi-rod lifting mechanism comprises a connecting rod A (8), a connecting rod B (9), a connecting rod C (10) and a hydraulic push rod (11), wherein the upper end of the connecting rod A (8) is hinged to the supporting block (4), the lower end of the connecting rod A (8) is movably connected with the driven wheel shaft (5), one end of the connecting rod B (9) is hinged to the middle of the connecting rod A (8), the other end of the connecting rod B (9) is hinged to one end of the connecting rod C (10), and the other end of the connecting rod C is hinged to the supporting block (4); a hydraulic push rod (11) is hinged between the connecting rod A (8) and the connecting rod B (9); the supporting block (4) comprises a sliding seat (14) matched with the sliding groove, protective plates (15) are arranged at the lower end of the sliding seat (14) on the front side and the rear side of the driven wheel (6), a connecting plate (16) is arranged between the protective plates (15) on the two sides, the upper end of the connecting rod A (8) is hinged to the connecting plate (16), and the connecting rod C (10) is hinged to the protective plate (15) on one side.

2. An adjustment mechanism for axle spacing variation of a heavy truck according to claim 1, characterized in that the lower end of the connecting rod a (8) has a cylindrical bore matching the driven axle (5).

3. The adjusting mechanism for axle spacing variation of a heavy truck according to claim 1, characterized in that the support block (4) is provided with a first hinge leg (12) and a second hinge leg (13) for hinging with a connecting rod a (8) and a connecting rod C (10).