CN-117162971-B - Single-cylinder translation mechanism of large semitrailer and application method thereof

CN117162971BCN 117162971 BCN117162971 BCN 117162971BCN-117162971-B

Abstract

The disclosure relates to a single-cylinder translation mechanism of a large semitrailer and a use method thereof. The single-cylinder translation mechanism of the large semitrailer comprises a connecting seat, an active walking assembly, a follow-up walking assembly, a first limiting assembly and a second limiting member, wherein the active walking assembly comprises a smooth supporting leg, a linear motion driving device and a first connecting rod, the smooth supporting leg is hinged to the connecting seat, a first end of the linear motion driving device is hinged to the connecting seat, a second end of the linear motion driving device is hinged to a rod body of the first connecting rod, the follow-up walking assembly comprises an anti-slip supporting leg and a second connecting rod, the anti-slip supporting leg is hinged to the connecting seat, the first limiting member is positioned on the smooth supporting leg and/or the anti-slip supporting leg, the anti-slip supporting leg is slidably connected with the smooth supporting leg through the first limiting member under the condition that the distance between the smooth supporting leg and the connecting seat is not larger than a preset distance, and the second limiting member is fixed on the lower surface of the connecting seat.

Inventors

XU CHUANHE
JIANG JING
YANG PENGFEI
WANG XIANG
HU JIANXIANG
LV YANXIA

Assignees

徐州重型机械有限公司

Dates

Publication Date: 20260505
Application Date: 20231011

Claims (9)

1. The single-cylinder translation mechanism of the large semitrailer is characterized by comprising a connecting seat, an active traveling assembly, two follow-up traveling assemblies, two groups of first limiting assemblies and two second limiting members, wherein the two follow-up traveling assemblies, the two groups of first limiting assemblies and the two second limiting members are symmetrically arranged on two sides of the motion direction of the active traveling assembly; the connecting seat is horizontally arranged, and the driving walking assembly and the follow-up walking assembly are both hinged to the lower surface of the connecting seat; The driving walking assembly comprises a smooth support leg, a linear motion driving device and a plurality of pairs of first connecting rods which are parallel to each other, wherein the smooth support leg is in a strip shape and is hinged to the connecting seat through the plurality of pairs of first connecting rods so that the smooth support leg can swing on a first vertical plane along the length direction of the smooth support leg, and meanwhile the smooth support leg is kept horizontally arranged; the follow-up walking assembly comprises an anti-skid support leg and at least one pair of second connecting rods which are parallel to each other, wherein the anti-skid support leg is in a strip plate shape and is hinged to the connecting seat through at least one pair of second connecting rods so that the anti-skid support leg can swing along the length direction of the anti-skid support leg on a second vertical plane and keep the anti-skid support leg to be horizontally arranged; The first spacing assembly is positioned on the smooth leg and/or the anti-skid leg, and the first spacing assembly is configured to: When the distance between the smooth support leg and the connecting seat is smaller than or equal to a preset distance, the first limiting component enables the anti-slip support leg to be connected with the smooth support leg in a sliding mode along the length direction, and the smooth support leg and the anti-slip support leg are kept on the same horizontal plane; under the condition that the distance between the smooth support leg and the connecting seat is larger than the preset distance, the sliding connection between the anti-slip support leg and the smooth support leg is disconnected; The second limiting piece is fixed on the lower surface of the connecting seat, and the second limiting piece is configured to: Under the condition that the distance between the anti-skid support leg and the connecting seat reaches a preset maximum distance, the second limiting piece is abutted to the second connecting rod so as to limit the swing amplitude of the second connecting rod and the anti-skid support leg.
2. The single cylinder translation mechanism of a large semitrailer according to claim 1, wherein the first limit assembly comprises a chute and a limit cylinder; The limiting cylinder is positioned on the upper surface of the smooth support leg and is close to the second end of the linear motion driving device; The sliding groove is positioned on the upper surface of the anti-skid support leg, extends from a first end to a second end along the length direction of the anti-skid support leg, and has a preset interval between the end part of the sliding groove and the second end along the length direction of the anti-skid support leg; the limiting cylinder is matched with the sliding groove, and the limiting cylinder is slidably arranged in the sliding groove or is separated from the sliding groove.
3. The single cylinder translation mechanism of a large semitrailer according to claim 1, wherein the first limit assembly comprises a chute and a limit cylinder; The limiting cylinder is positioned on the upper surface of the anti-skid support leg and is close to the second end of the linear motion driving device; The sliding groove is positioned on the upper surface of the smooth supporting leg, extends from the first end to the second end along the length direction of the smooth supporting leg, and has a preset interval between the end part of the sliding groove and the second end along the length direction of the smooth supporting leg; the limiting cylinder is matched with the sliding groove, and the limiting cylinder is slidably arranged in the sliding groove or is separated from the sliding groove.
4. The single-cylinder translation mechanism of a large semitrailer according to claim 1, wherein the second limiting piece is a limiting block, the limiting block is close to the hinge joint of the second connecting rod and the connecting seat, and the limiting block is inclined towards the second connecting rod so as to limit the swing amplitude of the second connecting rod and the anti-skid support leg.
5. The single cylinder translation mechanism of large semitrailer according to claim 1, wherein the linear motion driving device is one of an oil cylinder, an air cylinder or an electric cylinder.
6. The single-cylinder translation mechanism of a large semitrailer according to claim 1, further comprising a plurality of pin shafts, wherein a plurality of hinge point supports are respectively arranged on the lower surface of the connecting seat, the upper surface of the smooth support leg and the upper surface of the antiskid support leg; The first end of the first connecting rod is hinged with the connecting seat through the pin shaft and the hinge point support, and the second end of the first connecting rod is hinged with the smooth support leg through the pin shaft and the hinge point support; The first end of the second connecting rod is hinged with the connecting seat through the pin shaft and the hinge point support, and the second end of the second connecting rod is hinged with the anti-skid support leg through the pin shaft and the hinge point support.
7. The single cylinder translation mechanism of a large semitrailer according to claim 1, further comprising a telescoping device, wherein a first end of the telescoping device is fixedly connected to an upper surface of the connecting base, and a second end of the telescoping device is configured to be fixedly connected to a lower surface of a chassis of the large semitrailer.
8. A method for using the single-cylinder translation mechanism of a large semitrailer, which is characterized by comprising the following steps of: (1) The single-cylinder translation mechanism of the large semi-trailer is arranged on the lower surface of a chassis of the large semi-trailer through the connecting seat and is positioned at the tail part or the rear axle part of the frame, so that the length direction of the smooth support leg is perpendicular to the length direction of the large semi-trailer; (2) When the large semitrailer is in or is about to be switched to a normal running state, the linear motion driving device is adjusted to the minimum stroke so as to enable the distance between the smooth support legs and the connecting seat to be the shortest, at the moment, the active walking assembly is in a retracted state, the distance between the smooth support legs and the connecting seat is smaller than the preset distance, the first limiting assembly enables the anti-slip support legs to be connected with the smooth support legs in a sliding mode along the length direction, and the smooth support legs and the anti-slip support legs are kept on the same horizontal plane, so that the follow-up walking assembly is also in the retracted state; (3) In the case that the large semitrailer is ready to turn or laterally translate the vehicle tail, the steps of increasing the stroke of the linear motion driving device to the maximum stroke to lift and laterally move the vehicle tail, decreasing the stroke of the linear motion driving device to continuously laterally move the vehicle tail, repeating the foregoing steps until the large semitrailer reaches a designated position, and then performing the step (2).
9. The method of claim 8, wherein step (3) comprises, in order: (a) Increasing the travel of the linear motion drive means to bring the smooth foot and the skid-resistant foot into contact with the ground in the event that the large semitrailer is ready to steer or translate the vehicle tail laterally; (b) The linear motion driving device is adjusted to the maximum stroke, at the moment, the distance between the smooth support leg and the connecting seat is larger than the preset distance, the sliding connection between the anti-slip support leg and the smooth support leg is disconnected, the tail part of the large semi-trailer is lifted by the single-cylinder translation mechanism of the large semi-trailer and moves to the side surface, and the swing amplitude of the second connecting rod and the anti-slip support leg is limited by the second limiting piece; (c) Reducing the stroke of the linear motion driving device, gradually attaching the anti-skid support legs to the ground and providing supporting force for the tail of the vehicle, gradually sliding the smooth support legs to the side surfaces, and enabling the tail of the vehicle to continue to move to the side surfaces until the smooth support legs are completely separated from the ground; (d) Repeating steps (a) through (c) to continue moving the vehicle tail toward the side; (e) After the large semitrailer turns to or transversely translates the tail of the vehicle, the stroke of the linear motion driving device is continuously reduced, the tail of the vehicle of the large semitrailer is in contact with the ground, the smooth support legs are completely separated from the ground until the distance between the smooth support legs and the connecting seat is smaller than a preset distance, the first limiting assembly enables the anti-slip support legs to be connected with the smooth support legs in a sliding mode along the length direction, the smooth support legs and the anti-slip support legs are kept on the same horizontal plane, the linear motion driving device is continuously adjusted to the minimum stroke, so that the active walking assembly and the follow-up walking assembly are in a retracted state, and then the large semitrailer is restored to a normal running state.

Description

Single-cylinder translation mechanism of large semitrailer and application method thereof Technical Field The invention relates to an auxiliary device for lifting, translating and steering a large semitrailer, in particular to a single-cylinder translation mechanism of the large semitrailer and a use method thereof. Background With the technical development of transport vehicles, the tonnage of the transport vehicles is increased and the length of the transport vehicles is increased. The existing domestic highway network can not completely meet the running requirements of large vehicles. When some ultra-long vehicles run on narrow roads, the steering of the whole vehicle can meet great challenges, and even the situation of difficult driving and reversing occurs. Particularly, some semi-trailer vehicles generally have no active steering capability in the running system, and an auxiliary steering device is urgently needed. The large semitrailer is a special cargo and equipped transport vehicle, the whole vehicle is longer than 20 meters, steering is difficult during road running, and steering is basically difficult to realize without auxiliary equipment especially during narrow road running. The invention patent with publication number CN105539389A discloses a large-scale vehicle in-situ steering and longitudinal translation device, which is designed with mechanisms such as leveling support legs, a turntable, a translation guide rail and the like, and effectively solves the problem that the vehicle is difficult to normally steer due to too small road turning radius or space condition restriction when the vehicle travels on the basis of not changing the original structure of the vehicle, but the device has a complex structure, high cost and needs to occupy a large installation space. The invention patent with publication number CN104609335A discloses a multifunctional vehicle lifting, steering, moving and obstacle crossing device, which is applied to the integral lifting, rotating and translating of a small-sized vehicle, can manually or automatically realize the functions of lifting, rotating, moving and the like of the vehicle through a limited or wireless control mode, effectively overcomes the defects that the vehicle can only go forward and back legs, go left front, left back, right front and right back to turn and run, can not realize four-wheel ground leaving, the whole vehicle moves sideways and rotates in situ, spans a wider ditch through a narrow road surface, and exceeds the defect of higher narrow obstacle, and improves the maneuvering performance of the vehicle, but the system is more complex and has higher cost. In summary, the vehicle steering and moving device related to the prior art has complex structure, needs to arrange various power units and related structures, has higher cost, poor reliability, complex operation and large occupied space, needs to lift the whole vehicle during steering, has the risk of turning over, and is mainly aimed at small automobiles or common trucks, and difficult to adapt to the steering of ultra-long large semitrailers. Disclosure of Invention Technical problems: the vehicle steering and moving device related to the prior art has the defects of complex structure, high cost and poor reliability. The technical scheme is as follows: On one hand, the single-cylinder translation mechanism of the large semitrailer comprises a connecting seat, an active walking assembly, two follow-up walking assemblies, two groups of first limiting assemblies and two second limiting members, wherein the two follow-up walking assemblies, the two groups of first limiting assemblies and the two second limiting members are symmetrically arranged on two sides of the moving direction of the active walking assembly, the connecting seat is horizontally arranged, the active walking assembly and the follow-up walking assembly are hinged to the lower surface of the connecting seat, the active walking assembly comprises a smooth supporting foot, a linear motion driving device and a plurality of pairs of first connecting rods which are parallel to each other, the smooth supporting foot is in a strip shape, the first connecting rods are hinged to the connecting seat through the plurality of pairs of first connecting rods so as to enable the smooth supporting foot to swing along the length direction of the smooth supporting foot on a first vertical plane, the smooth supporting foot is kept horizontally arranged, the linear motion driving device is positioned on the first vertical plane, the first end of the linear motion driving device is hinged to the lower surface of the connecting seat, the second end of the linear motion driving device is hinged to the first connecting rod, the second end of the first linear motion driving device is connected to the first connecting rod in parallel to the first connecting rod, the second connecting rod is hinged to the second connecting rod is arranged on the sec