CN117162971A - Single-cylinder translation mechanism of large semitrailer and application method thereof - Google Patents

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; the active walking assembly comprises smooth support legs, a linear motion driving device and a first connecting rod; the smooth support leg is hinged on the connecting seat; the first end of the linear motion driving device is hinged to the connecting seat, and the second end of the linear motion driving device is hinged to the rod body of the first connecting rod; the follow-up walking assembly comprises an anti-slip support leg and a second connecting rod; the anti-slip support leg is hinged on the connecting seat; the first limiting component is positioned on the smooth support leg and/or the anti-skid support leg; under the condition that the distance between the smooth support leg and the connecting seat is not greater than a preset distance, the anti-slip support leg is slidably connected with the smooth support leg through the first limiting component; 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.

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 of 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 of CN104609335A discloses a multifunctional vehicle lifting, steering and moving obstacle crossing device, which is applied to the integral lifting, rotating and translating of a small-sized vehicle, and can manually or automatically realize the functions of lifting, rotating and moving of the vehicle through a limited or wireless control mode, so that 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, four wheels cannot be lifted off the ground, the whole vehicle can laterally move and rotate in situ, and can cross a wider ditch through a narrow road surface, the mobility of the vehicle is improved, but the system is complex and high in 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; when the vehicle is turned, the whole vehicle needs to be lifted, the risk of turning over exists, and the vehicle is mainly aimed at a small car or a common truck and is difficult to adapt to the turning of a super-long large semitrailer.

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:

in one aspect, a single cylinder translation mechanism for a large semitrailer is provided, comprising: the device 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 first limiting assemblies and the two second limiting members are symmetrically arranged on two sides of the motion direction of the active walking 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 active walking assembly comprises smooth support legs, a linear motion driving device and a plurality of pairs of first connecting rods which are parallel to each other; the smooth support legs are in a strip plate shape and are hinged to the connecting seat through a plurality of pairs of first connecting rods, so that the smooth support legs can swing on a first vertical plane along the length direction of the smooth support legs, and meanwhile the smooth support legs are kept to be horizontally arranged; the lower surface of the smooth support leg is smooth; 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, and the second end of the linear motion driving device is hinged to the rod body of the first connecting rod so as to adjust the included angle between the first connecting rod and the connecting seat and further adjust the distance between the smooth support leg and the connecting seat; 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; the anti-skid support legs are in a strip plate shape and are hinged to the connecting seat through at least one pair of second connecting rods, so that the anti-skid support legs can swing on a second vertical plane along the length direction of the anti-skid support legs, and the anti-skid support legs are kept to be horizontally arranged; the lower surfaces of the anti-skid support legs are provided with anti-skid layers, and the second vertical plane is parallel to the first vertical plane; the first limiting component is positioned on the smooth support leg and/or the anti-slip support leg; 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.

In some embodiments, the first stop assembly includes a chute and a stop 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 the first end to the second end along the length direction of the anti-skid support leg, and leaves 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 notch of the chute is horizontally arranged and faces one side of the smooth 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.

In some embodiments, the first stop assembly includes a chute and a stop 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 leaves 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 notch of the sliding groove is horizontally arranged and faces one side 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.

In some embodiments, the second stop is a stop block; the limiting block is close to the hinge joint of the second connecting rod and the connecting seat; the limiting block inclines towards the second connecting rod so as to limit the swing amplitude of the second connecting rod and the anti-skid support leg.

In some embodiments, the linear motion driving device is one of an oil cylinder, an air cylinder or an electric cylinder.

In some embodiments, the large semitrailer single cylinder translation mechanism further comprises a plurality of pins; the lower surface of the connecting seat, the upper surface of the smooth supporting leg and the upper surface of the anti-skid supporting leg are respectively provided with a plurality of hinge point supports; the first end of the first connecting rod is hinged with the connecting seat through the pin shaft and the hinge point support; the second end of the first connecting rod is hinged with the smooth support leg through the pin shaft and the hinge point support saddle; the first end of the second connecting rod is hinged with the connecting seat through the pin shaft and the hinge point support; 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.

In some embodiments, the single cylinder translation mechanism of the large semitrailer further comprises a telescoping device; the first end of the telescopic device is fixedly connected with the upper surface of the connecting seat, and the second end of the telescopic device is configured to be fixedly connected with the lower surface of the chassis of the large semitrailer.

On the other hand, a use method of the single-cylinder translation mechanism of the large semitrailer is provided, and the single-cylinder translation mechanism of the large semitrailer is adopted, and comprises the following steps:

(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 where the large semitrailer is ready to steer or translate the vehicle tail laterally, the following steps are performed: firstly, increasing the stroke of the linear motion driving device to the maximum stroke so as to lift the tail of the vehicle and move the tail of the vehicle to the side; reducing the stroke of the linear motion driving device so as to enable the tail of the vehicle to continuously move to the side; repeating the steps until the large semitrailer reaches a designated position; then, step (2) is performed.

In some embodiments, 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.

The beneficial effects are that:

1. the single-cylinder translation mechanism of the large semitrailer comprises a smooth support leg, a linear motion driving device, a plurality of pairs of first connecting rods which are parallel to each other and the like, and a follow-up walking mechanism comprises an anti-slip support leg, at least one pair of second connecting rods which are parallel to each other and the like. The lifting and translational movement of the tail part of the vehicle is realized by utilizing the difference of friction between the support legs of the two groups of travelling mechanisms and the ground, and the device has simple structure and good economy.

2. Compared with the prior art, the single-cylinder translation mechanism of the large semitrailer can realize the lifting translation of the large semitrailer by using only one linear motion driving device, has fewer power units required to be configured, is more convenient for the whole vehicle arrangement, has simpler structure, good economy, smaller occupied space, stable movement and strong bearing capacity, and can be installed on the large semitrailer or other large ultralong vehicles for auxiliary steering and position adjustment.

3. The single-cylinder translation mechanism of the large semitrailer is arranged at the tail part of a chassis of the large semitrailer or at the rear axle position and is used for assisting lifting steering. When the large semitrailer runs on a narrow road section, the turning radius of the chassis running system is too large, and the semitrailer is driven by the linear motion driving device to lift and translate the tail of the semitrailer, and the lifting and translating process is stable and safe, so that the semitrailer is assisted to turn, and the vehicle smoothly passes through the narrow road surface or is used for adjusting the tail position of the semitrailer.

4. When the vehicle is in a running state, the linear motion driving device can be adjusted to the minimum stroke, so that the active walking assembly and the follow-up walking assembly are in a retraction state, the single-cylinder translation mechanism of the large semitrailer is quickly folded and retracted, and the occupied space is further reduced.

5. The single-cylinder translation mechanism of the large semitrailer can finish steering or transversely translating the tail of the vehicle by adjusting the stroke of the linear motion driving device through ingenious structural design, and is convenient to operate and high in reliability.

Drawings

In order to more clearly illustrate the technical solutions of the present disclosure, the drawings that are required to be used in some embodiments of the present disclosure will be briefly described below, however, the drawings in the following description are only drawings of some embodiments of the present disclosure, and other drawings may be obtained according to these drawings for those of ordinary skill in the art.

FIG. 1 is a perspective view of a single cylinder translation mechanism of a large semitrailer according to some embodiments;

FIG. 2 is a front view of the single cylinder translation mechanism of the large semitrailer of FIG. 1;

FIG. 3 is a side view of the single cylinder translation mechanism of the large semitrailer of FIG. 1;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 5 is a schematic diagram of the installation location of a single cylinder translation mechanism of a large semitrailer in a finished vehicle according to some embodiments;

FIG. 6 is a schematic illustration of a single cylinder translation mechanism of a large semitrailer incorporating a telescoping device in a retracted state of the telescoping device, according to some embodiments;

FIG. 7 is a schematic illustration of a single cylinder translation mechanism of a large semitrailer incorporating a telescoping device in an extended state of the telescoping device, according to some embodiments;

FIG. 8 is a state diagram of a single cylinder translation mechanism of a large semi-trailer in the event that the large semi-trailer is or is about to switch to a normal driving state, according to some embodiments;

FIG. 9 is a state diagram of a single cylinder translational mechanism of a large semi-trailer for increasing the travel of a linear motion drive to bring smooth and skid-free legs into contact with the ground in the event that the large semi-trailer is ready to steer or translate the vehicle tail in a lateral direction, according to some embodiments;

FIG. 10 is a schematic view of a single cylinder translation mechanism of a large semi-trailer according to some embodiments, wherein when a linear motion driving device is adjusted to a maximum stroke, a sliding connection between a skid-proof support leg and a smooth support leg is broken, a vehicle tail of the large semi-trailer is lifted by the single cylinder translation mechanism of the large semi-trailer and moves to a side, and a swing amplitude of a second connecting rod and the skid-proof support leg is limited by a second limiting piece;

FIG. 11 is a schematic diagram of a linear motion drive device of a single cylinder translational mechanism of a large semitrailer according to some embodiments, wherein the maximum travel is reduced, the anti-skid legs are attached to the ground and provide a supporting force for the tail of the vehicle, and the smooth legs gradually slide sideways, so that the tail of the vehicle continues to move sideways until the smooth legs are completely separated from the ground.

Detailed Description

The following description of the embodiments of the present disclosure will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present disclosure. All other embodiments obtained by one of ordinary skill in the art based on the embodiments provided by the present disclosure are within the scope of the present disclosure.

Throughout the specification and claims, the term "comprising" is to be interpreted as an open, inclusive meaning, i.e. "comprising, but not limited to, unless the context requires otherwise. In the description of the present specification, the terms "one embodiment," "some embodiments," "example embodiments," "examples," "particular examples," or "some examples," etc., are intended to indicate that a particular feature, structure, material, or characteristic associated with the embodiment or example is included in at least one embodiment or example of the present disclosure. The schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The terms "first" and "second" are used below for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present disclosure, unless otherwise indicated, the meaning of "a plurality" is two or more.

In describing some embodiments, expressions of "coupled" and "connected" and their derivatives may be used. The term "coupled" is to be interpreted broadly, as referring to, for example, a fixed connection, a removable connection, or a combination thereof; can be directly connected or indirectly connected through an intermediate medium. The term "coupled" means that two or more elements are in direct physical or electrical contact. The term "coupled" or "communicatively coupled" may also mean that two or more elements are not in direct contact with each other, but yet still co-operate or interact with each other. The embodiments disclosed herein are not necessarily limited to the disclosure herein.

At least one of "A, B and C" has the same meaning as at least one of "A, B or C," both include the following combinations of A, B and C: a alone, B alone, C alone, a combination of a and B, a combination of a and C, a combination of B and C, and a combination of A, B and C.

"A and/or B" includes the following three combinations: only a, only B, and combinations of a and B.

As used herein, the term "if" is optionally interpreted to mean "when … …" or "at … …" or "in response to a determination" or "in response to detection" depending on the context. Similarly, the phrase "if determined … …" or "if detected [ stated condition or event ]" is optionally interpreted to mean "upon determining … …" or "in response to determining … …" or "upon detecting [ stated condition or event ]" or "in response to detecting [ stated condition or event ]" depending on the context.

The use of "adapted" or "configured to" herein is meant to be an open and inclusive language that does not exclude devices adapted or configured to perform additional tasks or steps.

In addition, the use of "based on" is intended to be open and inclusive in that a process, step, calculation, or other action "based on" one or more of the stated conditions or values may be based on additional conditions or beyond the stated values in practice.

As used herein, "about," "approximately" or "approximately" includes the stated values as well as average values within an acceptable deviation range of the particular values as determined by one of ordinary skill in the art in view of the measurement in question and the errors associated with the measurement of the particular quantity (i.e., limitations of the measurement system).

As used herein, "parallel", "perpendicular", "equal" includes the stated case as well as the case that approximates the stated case, the range of which is within an acceptable deviation range as determined by one of ordinary skill in the art taking into account the measurement in question and the errors associated with the measurement of the particular quantity (i.e., limitations of the measurement system). For example, "parallel" includes absolute parallel and approximately parallel, where the acceptable deviation range for approximately parallel may be, for example, a deviation within 5 °; "vertical" includes absolute vertical and near vertical, where the acceptable deviation range for near vertical may also be deviations within 5 °, for example. "equal" includes absolute equal and approximately equal, where the difference between the two, which may be equal, for example, is less than or equal to 5% of either of them within an acceptable deviation of approximately equal.

Exemplary embodiments are described herein with reference to cross-sectional and/or plan views as idealized exemplary figures. In the drawings, the thickness of layers and regions are exaggerated for clarity. Thus, variations from the shape of the drawings due to, for example, manufacturing techniques and/or tolerances, are to be expected. Thus, the exemplary embodiments should not be construed as limited to the shapes of regions illustrated herein but are to include deviations in shapes that result, for example, from manufacturing. For example, an etched region shown as a rectangle will typically have curved features. Thus, the regions illustrated in the figures are schematic in nature and their shapes are not intended to illustrate the actual shape of a region of a device and are not intended to limit the scope of example embodiments.

Key term definition:

and a translation mechanism: the device is arranged on a chassis of a vehicle and is used for lifting and translating parts of a large-sized ultra-long vehicle, so that steering or transverse movement of the vehicle is realized.

Semi-trailer: the vehicle is not powered and is carried by the main vehicle, and the vehicle runs by traction of the main vehicle.

In some embodiments, a single cylinder translation mechanism 3 of a large semitrailer is provided, as shown in fig. 1 to 4 and fig. 6 to 11, which includes: the device comprises a connecting seat 4, an active walking assembly 100, two follow-up walking assemblies 200, two groups of first limiting assemblies 300 and two second limiting members 14, wherein the two follow-up walking assemblies 200, the two groups of first limiting assemblies 300 and the two second limiting members 14 are symmetrically arranged on two sides of the active walking assembly 100 in the movement direction; the connecting seat 4 is horizontally arranged, and the active walking assembly 100 and the follow-up walking assembly 200 are both hinged to the lower surface of the connecting seat 4. The active walking assembly 100 comprises a smooth foot 9, a linear motion driving device 5 and a plurality of pairs (2 pairs shown in fig. 1) of first connecting rods 6 which are parallel to each other; the smooth support legs 9 are in a strip plate shape and are hinged to the connecting base 4 through a plurality of pairs of first connecting rods 6, so that the smooth support legs 9 can swing along the length direction of the smooth support legs 9 on a first vertical plane, and meanwhile the smooth support legs 9 are kept horizontally arranged; the lower surface of the smooth foot 9 is smooth; the linear motion driving device 5 is positioned on a first vertical plane; the first end of the linear motion driving device 5 is hinged to the lower surface of the connecting seat 4, and the second end of the linear motion driving device 5 is hinged to the rod body of the first connecting rod 6 so as to adjust the included angle between the first connecting rod 6 and the connecting seat 4 and further adjust the distance between the smooth support legs 9 and the connecting seat 4; the follow-up walking assembly 200 comprises an anti-skid support leg 8 and at least one pair of second connecting rods 7 which are parallel to each other; the anti-skid support legs 8 are in a strip plate shape and are hinged to the connecting seat 4 through at least one pair of second connecting rods 7, so that the anti-skid support legs 8 can swing along the length direction of the anti-skid support legs 8 on a second vertical plane, and the anti-skid support legs 8 are kept horizontally arranged; the lower surface of the anti-skid support leg 8 is provided with an anti-skid layer, and the second vertical plane is parallel to the first vertical plane; the first limiting assembly 300 is positioned on the smooth foot 9 and/or the anti-slip foot 8; the first spacing assembly 300 is configured to: in the case that the distance between the smooth leg 9 and the connection seat 4 is less than or equal to the preset distance, the anti-slip leg 8 is slidably connected with the smooth leg 9 in the length direction by the first limit assembly 300, and the smooth leg 9 and the anti-slip leg 8 are maintained on the same horizontal plane; in case that the distance between the smooth leg 9 and the connection seat 4 is greater than a preset distance, the sliding connection between the anti-slip leg 8 and the smooth leg 9 is broken; the second limiting member 14 is fixed on the lower surface of the connecting seat 4, and the second limiting member 14 is configured to: when the distance between the anti-slip support leg 8 and the connecting seat 4 reaches the preset maximum distance, the second limiting piece 14 abuts against the second connecting rod 7 to limit the swing amplitude of the second connecting rod 7 and the anti-slip support leg 8.

The application method of the single-cylinder translation mechanism 3 of the large semitrailer comprises the following steps:

(1) As shown in fig. 5 to 7, the single-cylinder translation mechanism 3 of the large semitrailer is arranged on the lower surface of the chassis of the large semitrailer 2 through a connecting seat 4 and is positioned at the tail part of the frame or in the middle part of the rear axle, so that the length direction of the smooth support legs 9 is perpendicular to the length direction of the large semitrailer 2; the large semitrailer 2 is towed by the tractor 1 to travel. The single-cylinder translation mechanism 3 of the large semitrailer can be directly arranged on the chassis according to different vehicle heights and ground clearance requirements, and also can be arranged on the chassis through a telescopic device.

(2) As shown in fig. 6 and 8, in the case that the large-sized semitrailer 2 is in or about to be switched to the normal running state, the linear motion driving device 5 is adjusted to the minimum stroke so as to minimize the distance between the smooth leg 9 and the connection seat 4, at this time, the active traveling assembly 100 is in the retracted state, the distance between the smooth leg 9 and the connection seat 4 is smaller than the preset distance, the anti-slip leg 8 is slidably connected with the smooth leg 9 in the length direction by the first limiting assembly 300, and the smooth leg 9 and the anti-slip leg 8 are maintained on the same horizontal plane, so that the follow-up traveling assembly 200 is also in the retracted state;

(3) As shown in fig. 9 to 11, in the case where the large semitrailer 2 is ready to steer or laterally translate the vehicle tail, the following steps are performed: firstly, increasing the stroke of the linear motion driving device 5 to the maximum stroke so as to lift the tail of the vehicle and move the tail to the side; the stroke of the linear motion driving device 5 is reduced, so that the tail part of the vehicle continues to move to the side; repeating the steps until the large semitrailer 2 reaches the designated position; then, step (2) is performed.

Specifically, the step (3) sequentially includes:

(a) As shown in fig. 9, in the case where the large semitrailer 2 is ready to turn or translate the vehicle tail laterally, the stroke of the linear motion driving device 5 is increased, and the anti-skid foot 8 and the smooth foot 9 are lowered therewith until they contact the ground;

(b) As shown in fig. 10, the linear motion driving device 5 is adjusted to the maximum stroke, at this time, the distance between the smooth support leg 9 and the connecting seat 4 is greater than the preset distance, the sliding connection between the anti-skid support leg 8 and the smooth support leg 9 is broken, the tail of the large semitrailer 2 is lifted by the single-cylinder translation mechanism 3 of the large semitrailer and moves to the side, and the positions of the second connecting rod 7 and the anti-skid support leg 8 are limited by the second limiting piece 14, so that the swing amplitude is prevented from being excessively large and deviating from a reasonable position;

(c) As shown in fig. 11, the stroke of the linear motion driving device 5 is reduced, the anti-slip support leg 8 is gradually attached to the ground under the influence of self gravity, and provides supporting force for the tail of the vehicle, and the smooth support leg 9 is gradually slid to the side due to insufficient binding force with the ground, so that the tail of the vehicle continues to move to the side until the smooth support leg 9 is completely separated from the ground;

(d) Repeating steps (a) through (c) to continue moving the vehicle tail sideways;

(e) After the large semitrailer 2 turns or transversely translates the tail of the vehicle, the stroke of the linear motion driving device 5 is continuously reduced, the tail of the vehicle of the large semitrailer 2 is contacted with the ground, the smooth support leg 9 is completely separated from the ground until the distance between the smooth support leg 9 and the connecting seat 4 is smaller than a preset distance, the anti-slip support leg 8 is slidably connected with the smooth support leg 9 along the length direction through the first limiting assembly 300, the smooth support leg 9 and the anti-slip support leg 8 are kept on the same horizontal plane, the linear motion driving device 5 is continuously adjusted to the minimum stroke, so that the active walking assembly 100 and the follow-up walking assembly 200 are in a retracted state, and then the large semitrailer 2 is restored to a normal running state.

The aforesaid large semitrailer single cylinder translation mechanism 3 comprises an active running mechanism 100 by a smooth support leg 9, a linear motion driving device 5, a plurality of pairs (2 pairs are shown in fig. 1) of first connecting rods 6 which are parallel to each other, and a follow-up running mechanism 200 by an anti-slip support leg 8 and at least one pair of second connecting rods 7 which are parallel to each other. The lifting and translational movement of the tail part of the vehicle is realized by utilizing the difference of friction between the support legs of the two groups of travelling mechanisms and the ground, the structure is simple, the used power units are few, and the economy is good.

The single-cylinder translation mechanism 3 of the large semitrailer mainly comprises a linear motion driving device 5 (such as an oil cylinder) for driving a mechanical link mechanism, and can realize lifting translation of the large semitrailer 2 only by using the linear motion driving device 5.

The single-cylinder translation mechanism 3 of the large semitrailer is arranged at the tail part or the rear axle position of the chassis of the large semitrailer 2 and is used for assisting lifting steering. When the large semitrailer 2 runs on a narrow road section and the turning radius of the chassis running system is too large to pass through the road section, the tail of the semitrailer can be lifted and translated through the linear motion driving device 5 by the single-cylinder translation mechanism 3 of the large semitrailer, so that the vehicle is assisted to turn, and the vehicle smoothly passes through a narrow road surface or is used for adjusting the tail position of the semitrailer. The lifting and translating process of the single-cylinder translating mechanism 3 of the large semitrailer is stable and safe.

When the vehicle is in a running state, the linear motion driving device 5 can be adjusted to the minimum stroke, so that the active walking assembly 100 and the follow-up walking assembly 200 are in a retracted state, the single-cylinder translation mechanism 3 of the large semitrailer is quickly folded and retracted, and the occupied space is further reduced.

The single-cylinder translation mechanism 3 of the large semitrailer can finish steering or transversely translating the tail of the vehicle only by adjusting the stroke of the linear motion driving device 5 through ingenious structural design, and is convenient to operate and high in reliability.

In some embodiments, as shown in fig. 1, 2, 4-5, 8-11, the first stop assembly 300 includes a chute 11 and a stop cylinder 10; the limit cylinder 10 is positioned on the upper surface of the smooth support leg 9 and is close to the second end of the linear motion driving device 5; the sliding groove 11 is positioned on the upper surface of the anti-skid support leg 8, extends from the first end to the second end along the length direction of the anti-skid support leg 8, and a preset interval is reserved between the end part of the sliding groove 11 and the second end along the length direction of the anti-skid support leg 8; the notch of the chute 11 is horizontally arranged and faces one side of the smooth support leg 9; the limiting cylinder 10 is matched with the chute 11, and the limiting cylinder 10 is slidably arranged in the chute 11 or is separated from the chute 11. Thus, as shown in fig. 6 and 8, in the case that the large-sized semitrailer 2 is in or about to be switched to the normal running state, the linear motion driving device 5 is adjusted to the minimum stroke so that the distance between the smooth leg 9 and the connection seat 4 is the shortest, at this time, the active traveling assembly 100 is in the retracted state, the distance between the smooth leg 9 and the connection seat 4 is smaller than the preset distance, the limit cylinder 10 on the smooth leg 9 is located inside the slide groove 11, the anti-slip leg 8 is slidably connected with the smooth leg 9 in the length direction, and the smooth leg 9 and the anti-slip leg 8 are kept on the same horizontal plane, so that the follow-up traveling assembly 200 is also in the retracted state. When the distance between the smooth foot 9 and the connecting seat 4 is greater than the preset distance, for example, when the linear motion driving device 5 is at the maximum stroke, the limit cylinder 10 is separated from the chute 11, and the sliding connection between the anti-slip foot 8 and the smooth foot 9 is broken.

Similarly, in some embodiments, the first stop assembly includes a chute and a stop cylinder; the limit 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 a preset interval is reserved between the end part of the sliding groove and the second end along the length direction of the smooth supporting leg; the notch of the chute is horizontally arranged and faces one side of the anti-skid support leg; the limiting cylinder is matched with the chute and can be slidably arranged in the chute or deviate from the chute.

In some embodiments, as shown in fig. 1, 2, 8-11, the second limiting member 14 is a limiting block; the limiting block is close to the hinge joint of the second connecting rod 7 and the connecting seat 4; the limiting block inclines towards the second connecting rod 7 so as to limit the swing amplitude of the second connecting rod 7 and the anti-skid support leg 8.

In some embodiments, the linear motion driving device 5 is one of an oil cylinder, an air cylinder, or an electric cylinder.

In some embodiments, as shown in fig. 2, the single cylinder translation mechanism 3 of the large semitrailer further comprises a plurality of pins (including a long pin 13 and a short pin 12); the lower surface of the connecting seat 4, the upper surface of the smooth supporting leg 9 and the upper surface of the anti-slip supporting leg 8 are respectively provided with a plurality of hinge point supports 18; the first end of the first connecting rod 6 is hinged with the connecting seat 4 through a pin shaft and a hinge point support 18; the second end of the first connecting rod 6 is hinged with the smooth support leg 9 through a pin shaft and a hinge point support 18; the first end of the second connecting rod 7 is hinged with the connecting seat 4 through a pin shaft and a hinge point support 18; the second end of the second connecting rod 7 is hinged with the anti-skid support 8 through a pin shaft and a hinge point support 18.

In some embodiments, as shown in fig. 2, a first end of the linear motion driving device 5 is hinged to the lower surface of the connection base 4 through a short pin 12 and a hinge point support 18, and a second end of the linear motion driving device 5 is hinged to the shaft of the first link 6 through a long pin 13 and a hinge point support 18.

In some embodiments, as shown in fig. 1 and 2, the upper ends of the 2 pairs of first links 6 parallel to each other are mounted on the hinge point support 18 of the link seat 4 through the long pin shafts 13, and the lower ends of the 2 pairs of first links 6 parallel to each other are hinged with the smooth leg 9 through the long pin shafts 13. The upper end of the second connecting rod 7 is arranged on a twisting point support 18 of the connecting seat 4 through a short pin shaft 12, and the lower end of the second connecting rod 7 is hinged with the anti-skid support leg 8 through the short pin shaft 12.

In some embodiments, as shown in fig. 6, the single cylinder translation mechanism 3 of the large semitrailer further comprises a telescopic device 301; the first end of the telescopic device 301 is fixedly connected with the upper surface of the connection seat 4, and the second end of the telescopic device 301 is configured to be fixedly connected with the lower surface of the chassis of the large semitrailer 2. The telescopic device 301 is retracted (as shown in fig. 6) during running, and the telescopic device 301 is extended (as shown in fig. 7) during the operation of the single-cylinder translation mechanism 3 of the large semitrailer.

In the description of the above embodiments, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is merely a specific embodiment of the disclosure, but the protection scope of the disclosure is not limited thereto, and any person skilled in the art who is skilled in the art will recognize that changes or substitutions are within the technical scope of the disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims (9)

1. A single cylinder translation mechanism for a large semitrailer, comprising: the device 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 first limiting assemblies and the two second limiting members are symmetrically arranged on two sides of the motion direction of the active walking 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 active walking assembly comprises smooth support legs, a linear motion driving device and a plurality of pairs of first connecting rods which are parallel to each other; the smooth support legs are in a strip plate shape and are hinged to the connecting seat through a plurality of pairs of first connecting rods, so that the smooth support legs can swing on a first vertical plane along the length direction of the smooth support legs, and meanwhile the smooth support legs are kept to be horizontally arranged; the lower surface of the smooth support leg is smooth; 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, and the second end of the linear motion driving device is hinged to the rod body of the first connecting rod so as to adjust the included angle between the first connecting rod and the connecting seat and further adjust the distance between the smooth support leg and the connecting seat;

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; the anti-skid support legs are in a strip plate shape and are hinged to the connecting seat through at least one pair of second connecting rods, so that the anti-skid support legs can swing on a second vertical plane along the length direction of the anti-skid support legs, and the anti-skid support legs are kept to be horizontally arranged; the lower surfaces of the anti-skid support legs are provided with anti-skid layers, and the second vertical plane is parallel to the first vertical plane;

the first limiting component is positioned on the smooth support leg and/or the anti-slip support leg; 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 the first end to the second end along the length direction of the anti-skid support leg, and leaves 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 notch of the chute is horizontally arranged and faces one side of the smooth 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 leaves 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 notch of the sliding groove is horizontally arranged and faces one side 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.

4. The single cylinder translation mechanism of a large semitrailer according to claim 1, wherein the second stop member is a stop block; the limiting block is close to the hinge joint of the second connecting rod and the connecting seat; the limiting block inclines 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 pins; the lower surface of the connecting seat, the upper surface of the smooth supporting leg and the upper surface of the anti-skid supporting leg are respectively provided with a plurality of hinge point supports;

the first end of the first connecting rod is hinged with the connecting seat through the pin shaft and the hinge point support; the second end of the first connecting rod is hinged with the smooth support leg through the pin shaft and the hinge point support saddle;

the first end of the second connecting rod is hinged with the connecting seat through the pin shaft and the hinge point support; 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; the first end of the telescopic device is fixedly connected with the upper surface of the connecting seat, and the second end of the telescopic device is configured to be fixedly connected with the lower surface of the 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 where the large semitrailer is ready to steer or translate the vehicle tail laterally, the following steps are performed: firstly, increasing the stroke of the linear motion driving device to the maximum stroke so as to lift the tail of the vehicle and move the tail of the vehicle to the side; reducing the stroke of the linear motion driving device so as to enable the tail of the vehicle to continuously move to the side; repeating the steps until the large semitrailer reaches a designated position; then, step (2) is performed.

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.