A single-cylinder translation mechanism for a large semi-trailer and its application method

Abstract

This disclosure relates to a single-cylinder translation mechanism for a large semi-trailer and its usage method. The single-cylinder translation mechanism for a large semi-trailer includes a connecting seat, an active travel assembly, a follower travel assembly, a first limiting assembly, and a second limiting member. The active travel assembly includes a smooth support leg, a linear motion drive device, and a first connecting rod. The smooth support leg is hinged to the connecting seat. The first end of the linear motion drive device is hinged to the connecting seat, and the second end is hinged to the body of the first connecting rod. The follower travel assembly includes an anti-slip support leg and a second connecting rod. The anti-slip support leg is hinged to the connecting seat. The first limiting assembly is located on the smooth support leg and / or the anti-slip support leg. When 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 to the smooth support leg via the first limiting assembly. When the distance between the smooth support leg and the connecting seat is greater than the preset distance, the sliding connection between the anti-slip support leg and the smooth support leg is broken. The second limiting member is fixed to the lower surface of the connecting seat.

Description

Technical Field

[0001] This disclosure relates to auxiliary devices for lifting, translating, and steering large semi-trailers, and particularly to a single-cylinder translation mechanism for large semi-trailers and its usage method. Background Technology

[0002] With the technological advancements in transport vehicles, their tonnage and length are increasing. However, the existing road network in China cannot fully meet the demands of these large vehicles. When some extra-long vehicles travel on narrow roads, steering becomes extremely challenging, sometimes even resulting in a dilemma. This is especially true for semi-trailer vehicles, whose running gear generally lacks active steering capabilities, necessitating an auxiliary steering device.

[0003] The large semi-trailer disclosed herein is a special cargo and equipment transport vehicle with a total length exceeding 20 meters. It is difficult to turn when driving on highways, especially when driving on narrow sections of road without auxiliary equipment, making it virtually impossible to turn.

[0004] The invention patent with publication number CN105539389A discloses a device for turning and longitudinally translating large vehicles in place. The device is designed with leveling outriggers, a turntable, and translation guide rails. It effectively solves the problem that vehicles are difficult to turn normally due to the small turning radius of the road or the constraints of space conditions without changing the original structure of the vehicle. However, the device has a relatively complex structure, high cost, and requires a large installation space.

[0005] The invention patent with publication number CN104609335A discloses a multifunctional vehicle lifting, steering, moving, and obstacle-crossing device. This device is applied to the overall lifting, rotation, and translation of small cars. It can manually or automatically perform functions such as lifting, rotating, and moving the vehicle through limited or wireless control methods. It effectively overcomes the shortcomings of vehicle design, which can only move forward and backward, turn left front and left rear, and right front and right rear, and cannot achieve four wheels off the ground, side movement of the whole vehicle, rotation on the spot, pass through narrow roads, cross wide ditches, and overcome tall and narrow obstacles. It improves the vehicle's maneuverability. However, the system is relatively complex and costly.

[0006] In summary, the existing technologies for vehicle steering and movement devices are complex in structure, require the arrangement of multiple power units and related structures, have high costs, poor reliability, complicated operation, and occupy a large space. When steering, the entire vehicle needs to be lifted, which poses a risk of rollover. Moreover, they are mainly designed for small cars or ordinary trucks and are difficult to adapt to the steering of extra-long large semi-trailers. Summary of the Invention

[0007] Technical issues:

[0008] Existing technologies involve vehicle steering and movement devices with complex structures, high costs, and poor reliability.

[0009] Technical solution:

[0010] On one hand, a single-cylinder translation mechanism for a large semi-trailer is provided, comprising: a connecting seat, an active walking assembly, two symmetrically arranged follower walking assemblies located on both sides of the movement direction of the active walking assembly, two sets of first limiting assemblies, and two second limiting members; the connecting seat is horizontally arranged, and both the active walking assembly and the follower walking assembly are hinged to the lower surface of the connecting seat; the active walking assembly includes a smooth support leg, a linear motion drive device, and multiple pairs of parallel first connecting rods; the smooth support leg is in the shape of a long strip plate and is hinged to the connecting seat through multiple pairs of first connecting rods, so that the smooth support leg... The device is capable of swinging along the length of the smooth support leg in a first vertical plane while maintaining the smooth support leg in a horizontal position; the lower surface of the smooth support leg is smooth; the linear motion drive device is located in the first vertical plane; the first end of the linear motion drive device is hinged to the lower surface of the connecting seat, and the second end of the linear motion drive device is hinged to the body of the first connecting rod to adjust the angle between the first connecting rod and the connecting seat, thereby adjusting the distance between the smooth support leg and the connecting seat; the follow-up walking assembly includes anti-slip support legs and at least one pair of parallel second connecting rods; The anti-slip foot is elongated and plate-shaped, hinged to the connecting seat via at least one pair of second connecting rods, allowing the anti-slip foot to swing along its length in a second vertical plane while maintaining a horizontal position. An anti-slip layer is provided on the lower surface of the anti-slip foot, and the second vertical plane is parallel to the first vertical plane. A first limiting component is located on the smooth foot and / or the anti-slip foot. The first limiting component is configured to, when the distance between the smooth foot and the connecting seat is less than or equal to a preset distance, prevent the anti-slip foot from swinging horizontally. The foot is slidably connected to the smooth support leg along its length, and the smooth support leg and the anti-slip support leg are kept on the same horizontal plane; when the distance between the smooth support leg and the connecting seat is greater than the preset distance, the sliding connection between the anti-slip support leg and the smooth support leg is broken; the second limiting member is fixed to the lower surface of the connecting seat, and the second limiting member is configured such that when the distance between the anti-slip support leg and the connecting seat reaches the preset maximum distance, the second limiting member abuts against the second connecting rod to limit the swing amplitude of the second connecting rod and the anti-slip support leg.

[0011] In some embodiments, the first limiting component includes a groove and a limiting cylinder; the limiting cylinder is located on the upper surface of the smooth support foot and is close to the second end of the linear motion drive device; the groove is located on the upper surface of the anti-slip support foot and extends from a first end to a second end along the length direction of the anti-slip support foot, with a preset distance between the end of the groove and the second end along the length direction of the anti-slip support foot; the groove opening is horizontally arranged and faces the smooth support foot; the limiting cylinder cooperates with the groove, and the limiting cylinder is slidably disposed in the groove or displaced from the groove.

[0012] In some embodiments, the first limiting component includes a groove and a limiting cylinder; the limiting cylinder is located on the upper surface of the anti-slip foot and is close to the second end of the linear motion drive device; the groove is located on the upper surface of the smooth foot and extends from a first end to a second end along the length direction of the smooth foot, with a preset distance between the end of the groove and the second end along the length direction of the smooth foot; the groove opening is horizontally arranged and faces the anti-slip foot; the limiting cylinder cooperates with the groove, and the limiting cylinder is slidably disposed in the groove or displaced from the groove.

[0013] In some embodiments, the second limiting member is a limiting block; the limiting block is located near the hinge point between the second connecting rod and the connecting seat; the limiting block is inclined toward the second connecting rod to limit the swing amplitude of the second connecting rod and the anti-slip foot.

[0014] In some embodiments, the linear motion drive device is one of a hydraulic cylinder, a pneumatic cylinder, or an electric cylinder.

[0015] In some embodiments, the large semi-trailer single-cylinder translation mechanism further includes multiple pins; the lower surface of the connecting seat, the upper surface of the smooth support foot, and the upper surface of the anti-slip support foot are respectively provided with multiple hinge point supports; the first end of the first connecting rod is hinged to the connecting seat through the pins and the hinge point supports; the second end of the first connecting rod is hinged to the smooth support foot through the pins and the hinge point supports; the first end of the second connecting rod is hinged to the connecting seat through the pins and the hinge point supports; the second end of the second connecting rod is hinged to the anti-slip support foot through the pins and the hinge point supports.

[0016] In some embodiments, the large semi-trailer single-cylinder translation mechanism further includes a telescopic device; a first end of the telescopic device is fixedly connected to the upper surface of the connecting seat, and a second end of the telescopic device is configured to be fixedly connected to the lower surface of the chassis of the large semi-trailer.

[0017] On the other hand, a method for using a single-cylinder translation mechanism for a large semi-trailer is provided, which employs the aforementioned single-cylinder translation mechanism for a large semi-trailer and includes the following steps:

[0018] (1) The single-cylinder translation mechanism of the large semi-trailer is installed on the lower surface of the chassis of the large semi-trailer through the connecting seat and is located at the rear of the frame or the rear axle, so that the length direction of the smooth support leg is perpendicular to the length direction of the large semi-trailer.

[0019] (2) When the large semi-trailer is in or about to switch to normal driving state, adjust the linear motion drive device to the minimum stroke so that the distance between the smooth support foot and the connecting seat is the shortest. At this time, the active walking component is in the retracted state, the distance between the smooth support foot and the connecting seat is less than the preset distance, and the anti-slip support foot is slidably connected to the smooth support foot along the length direction through the first limiting component, and the smooth support foot and the anti-slip support foot are kept on the same horizontal plane, so that the follow-up walking component is also in the retracted state.

[0020] (3) When the large semi-trailer is about to turn or move the rear of the vehicle laterally, perform the following steps: first increase the stroke of the linear motion drive device to the maximum stroke so that the rear of the vehicle is lifted and moved to the side; then decrease the stroke of the linear motion drive device so that the rear of the vehicle continues to move to the side; repeat the above steps until the large semi-trailer reaches the designated position; then, perform step (2).

[0021] In some embodiments, step (3) includes the following steps in sequence:

[0022] (a) When the large semi-trailer is preparing to turn or laterally move the rear of the vehicle, increase the stroke of the linear motion drive device so that the smooth outrigger and the anti-slip outrigger contact the ground;

[0023] (b) Adjust the linear motion drive device to the maximum stroke. At this time, the distance between the smooth support foot and the connecting seat is greater than the preset distance. The sliding connection between the anti-slip support foot and the smooth support foot is disconnected. The rear of the large semi-trailer is lifted by the single-cylinder translation mechanism of the large semi-trailer and moves to the side. The swing amplitude of the second link and the anti-slip support foot is limited by the second limiting member.

[0024] (c) Reduce the stroke of the linear motion drive device, the anti-slip foot gradually contacts the ground and provides support to the rear of the vehicle, the smooth foot gradually slides to the side, so that the rear of the vehicle continues to move to the side until the smooth foot is completely off the ground.

[0025] (d) Repeat steps (a) to (c) to continuously move the rear of the vehicle toward the side;

[0026] (e) After the large semi-trailer completes its turning or lateral translation of the rear of the vehicle, the stroke of the linear motion drive device is further reduced so that the rear of the large semi-trailer contacts the ground and the smooth outriggers are completely off the ground until the distance between the smooth outriggers and the connecting seat is less than a preset distance. The first limiting component allows the anti-slip outriggers to be slidably connected to the smooth outriggers along the length direction, and the smooth outriggers and the anti-slip outriggers are kept on the same horizontal plane. The linear motion drive device is then adjusted to its minimum stroke so that the active walking component and the follow-up walking component are in the retracted state. After that, the large semi-trailer returns to its normal driving state.

[0027] Beneficial effects:

[0028] 1. The large semi-trailer single-cylinder translation mechanism of the present invention consists of a smooth support foot, a linear motion drive device, and multiple pairs of parallel first links forming the active walking mechanism, and an anti-slip support foot and at least one pair of parallel second links forming the follow-up walking mechanism. The lifting and translational movement of the vehicle's rear end is achieved by utilizing the different frictional forces between the support feet of the two walking mechanisms and the ground. The structure is simple and economical.

[0029] 2. The single-cylinder translation mechanism for large semi-trailers of the present invention only requires one linear motion drive device to realize the lifting and translation of large semi-trailers. Compared with the prior art, it requires fewer power units, is easier to arrange in the whole vehicle, has a simpler structure, is more economical, occupies less space, moves smoothly, and has a strong load-bearing capacity. It can be installed on large-tonnage semi-trailers or other large and extra-long vehicles for auxiliary steering and position adjustment.

[0030] 3. The single-cylinder translation mechanism for large semi-trailers of the present invention is installed at the rear of the chassis frame or rear axle of the large semi-trailer to assist in lifting and steering. When the large semi-trailer is traveling on a narrow road and the turning radius of the chassis travel system is too large to pass through the road, the rear of the semi-trailer can be lifted and translated by a linear motion drive device. The lifting and translation process is smooth and safe, thereby assisting the vehicle in turning and allowing the vehicle to pass through narrow roads smoothly, or it can be used to adjust the position of the rear of the semi-trailer.

[0031] 4. When the vehicle is in motion, the linear motion drive device can be adjusted to its minimum stroke to retract the active travel component and the follow-up travel component, thereby quickly folding and storing the single-cylinder translation mechanism of the large semi-trailer, further reducing the space occupied.

[0032] 5. The single-cylinder translation mechanism for large semi-trailers of the present invention, through its ingenious structural design, can complete the steering or lateral translation of the rear of the vehicle simply by adjusting the stroke of the linear motion drive device, making it easy to operate and highly reliable. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments of this disclosure will be briefly introduced below. However, the accompanying drawings described below are only drawings of some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings.

[0034] Figure 1 A three-dimensional structural diagram of a single-cylinder translation mechanism for a large semi-trailer according to some embodiments;

[0035] Figure 2 for Figure 1 A front view of the single-cylinder translation mechanism of a large semi-trailer;

[0036] Figure 3 for Figure 1 Side view of a single-cylinder translation mechanism for a large semi-trailer;

[0037] Figure 4 For is along Figure 2 Sectional view of line AA in the middle;

[0038] Figure 5 This is a schematic diagram showing the installation position of a single-cylinder translation mechanism for a large semi-trailer in the vehicle according to some embodiments;

[0039] Figure 6 This is a schematic diagram of a single-cylinder translation mechanism for a large semi-trailer containing a telescopic device, according to some embodiments, with the telescopic device in the retracted state.

[0040] Figure 7 This is a schematic diagram of a single-cylinder translation mechanism for a large semi-trailer containing a telescopic device, according to some embodiments, with the telescopic device in the extended state.

[0041] Figure 8 This is a state diagram of a single-cylinder translation mechanism for a large semi-trailer according to some embodiments, when the large semi-trailer is in or about to switch to normal driving mode.

[0042] Figure 9 A diagram showing the state of a single-cylinder translation mechanism for a large semi-trailer according to some embodiments, where the large semi-trailer is preparing to turn or laterally translate the rear of the vehicle, to increase the stroke of the linear motion drive device so that the smooth outriggers and anti-slip outriggers are in contact with the ground.

[0043] Figure 10This is a schematic diagram illustrating how, in some embodiments of a large semi-trailer single-cylinder translation mechanism, when the linear motion drive is adjusted to its maximum stroke, the sliding connection between the anti-slip foot and the smooth foot is disconnected, the rear of the large semi-trailer is lifted by the large semi-trailer single-cylinder translation mechanism and moves to the side, and the swing amplitude of the second link and the anti-slip foot is limited by the second limiting member.

[0044] Figure 11 The diagram illustrates the linear motion drive of a single-cylinder translation mechanism for a large semi-trailer according to some embodiments, where the maximum stroke is reduced, the anti-slip outriggers are in contact with the ground and provide support to the rear of the vehicle, and the smooth outriggers gradually slide to the side, causing the rear of the vehicle to continue to move to the side until the smooth outriggers are completely off the ground. Detailed Implementation

[0045] The technical solutions in some embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments provided in this disclosure are within the scope of protection of this disclosure.

[0046] Unless the context otherwise requires, throughout the specification and claims, the term "comprising" is interpreted as open-ended and encompassing, meaning "including, but not limited to." In the description of the specification, terms such as "one embodiment," "some embodiments," "exemplary embodiment," "example," "specific example," or "some examples," etc., are intended to indicate that a particular feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of this disclosure. The illustrative representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific feature, structure, material, or characteristic may be included in any suitable manner in any one or more embodiments or examples.

[0047] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0048] In describing some embodiments, the terms "coupled" and "connected," and their derivative expressions, may be used. The term "connected" should be interpreted broadly; for example, a "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium. The term "coupled" indicates that two or more components have direct physical or electrical contact. The term "coupled" or "communication coupling" may also refer to two or more components that do not have direct contact with each other but still cooperate or interact with each other. The embodiments disclosed herein are not necessarily limited to the content of this document.

[0049] "At least one of A, B and C" has the same meaning as "at least one of A, B or C", both including the following combinations of A, B and C: only A, only B, only C, combinations of A and B, combinations of A and C, combinations of B and C, and combinations of A, B and C.

[0050] "A and / or B" includes the following three combinations: A only, B only, and a combination of A and B.

[0051] As used herein, depending on the context, the term “if” may optionally be interpreted as meaning “when”, “in the event of”, “in response to determination”, or “in response to detection”. Similarly, depending on the context, the phrase “if it is determined that…” or “if [the stated condition or event] is detected” may optionally be interpreted as meaning “in the event of determination that…”, “in response to determination that…”, “when [the stated condition or event] is detected”, or “in response to the detection of [the stated condition or event]”.

[0052] The use of “applies to” or “configured to” in this article implies an open and inclusive language that does not preclude applicability to or configuration to devices that perform additional tasks or steps.

[0053] In addition, the use of “based on” implies openness and inclusivity, because processes, steps, calculations or other actions “based on” one or more of the stated conditions or values ​​may in practice be based on additional conditions or values ​​beyond those stated.

[0054] As used herein, “about,” “approximately,” or “approximately” includes the stated value and the average value within an acceptable range of deviation from the given value, wherein the acceptable range of deviation is determined by a person skilled in the art taking into account the measurement under discussion and the error associated with the measurement of the given quantity (i.e., the limitations of the measurement system).

[0055] As used herein, “parallel,” “perpendicular,” and “equal” include the described situation and situations that are similar to the described situation, within an acceptable range of deviation, which is determined by those skilled in the art taking into account the measurement under discussion and the error associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, “parallel” includes absolute parallelism and approximate parallelism, where an acceptable range of deviation for approximate parallelism may be, for example, within 5°; “perpendicular” includes absolute perpendicularity and approximate perpendicularity, where an acceptable range of deviation for approximate perpendicularity may also be, for example, within 5°; “equal” includes absolute equality and approximate equality, where an acceptable range of deviation for approximate equality may be, for example, a difference between the two equals being less than or equal to 5% of either one.

[0056] This document describes exemplary embodiments with reference to cross-sectional views and / or plan views, which are idealized exemplary drawings. In the drawings, the thickness of layers and regions is enlarged for clarity. Therefore, variations in shape relative to the drawings are contemplated due to, for example, manufacturing techniques and / or tolerances. Thus, exemplary embodiments should not be construed as limited to the shapes of the regions shown herein, but rather include shape deviations due to, for example, manufacturing processes. For example, etched regions shown as rectangular would typically have curved features. Therefore, the regions shown in the drawings are schematic in nature, and their shapes are not intended to show the actual shapes of the regions of the device, nor are they intended to limit the scope of the exemplary embodiments.

[0057] Key term definitions:

[0058] Translation mechanism: It is installed on the vehicle chassis and its function is to lift and translate parts of large and extra-long vehicles, thereby enabling the vehicle to turn or move laterally.

[0059] Semi-trailer: refers to a vehicle that has no power of its own, shares the load with the main vehicle, and relies on the main vehicle for traction.

[0060] In some embodiments, a single-cylinder translation mechanism 3 for a large semi-trailer is provided, such as... Figures 1 to 4 , Figures 6 to 11 As shown, it includes: a connecting seat 4, an active walking assembly 100, two symmetrically arranged follower walking assemblies 200 located on both sides of the active walking assembly 100 in the direction of movement, two sets of first limiting assemblies 300, and two second limiting members 14; the connecting seat 4 is horizontally arranged, and both the active walking assembly 100 and the follower walking assemblies 200 are hinged to the lower surface of the connecting seat 4. The active walking assembly 100 includes smooth support legs 9, a linear motion drive device 5, and multiple pairs of ( Figure 1The first connecting rods 6 (two pairs shown) are parallel to each other; the smooth support leg 9 is a long strip plate, hinged to the connecting seat 4 by multiple pairs of first connecting rods 6, so that the smooth support leg 9 can swing along the length direction of the smooth support leg 9 in the first vertical plane, while keeping the smooth support leg 9 horizontal; the lower surface of the smooth support leg 9 is smooth; the linear motion drive device 5 is located in the first vertical plane; the first end of the linear motion drive device 5 is hinged to the lower surface of the connecting seat 4, and the second end of the linear motion drive device 5 is hinged to the rod body of the first connecting rod 6, so as to adjust the angle between the first connecting rod 6 and the connecting seat 4, thereby adjusting the distance between the smooth support leg 9 and the connecting seat 4; the follow-up walking assembly 200 includes an anti-slip support leg 8 and at least one pair of parallel second connecting rods 7; the anti-slip support leg 8 is a long strip plate, hinged to the connecting seat 4 by at least one pair of second connecting rods 7, so that the anti-slip support leg 8 can swing along the length direction of the anti-slip support leg 8 in the second vertical plane, while keeping the anti-slip support leg 9 horizontal; the lower surface of the smooth support leg 9 is smooth; the linear motion drive device 5 is located in the first vertical plane; the first end of the linear motion drive device 5 is hinged to the lower surface of the connecting seat 4, and the second end of the linear motion drive device 5 is hinged to the rod body of the first connecting rod 6, so as to adjust the angle between the first connecting rod 6 and the connecting seat 4, thereby adjusting the distance between the smooth support leg 9 and the connecting seat 4; the follow-up walking assembly 200 includes an anti-slip support leg 8 and at least one pair of parallel second connecting rods 7; the anti-slip support leg 8 is a long strip plate, hinged to the connecting seat 4 by at least one pair of second connecting rods 7, so that the The foot 8 is horizontally positioned; the lower surface of the anti-slip foot 8 is provided with an anti-slip layer, and the second vertical plane is parallel to the first vertical plane; the first limiting component 300 is located on the smooth foot 9 and / or the anti-slip foot 8; the first limiting component 300 is configured to: when the distance between the smooth foot 9 and the connecting seat 4 is less than or equal to a preset distance, the anti-slip foot 8 is slidably connected to the smooth foot 9 along the length direction through the first limiting component 300, and the smooth foot 9 and the anti-slip foot 8 are kept on the same horizontal plane; when the distance between the smooth foot 9 and the connecting seat 4 is greater than the preset distance, the sliding connection between the anti-slip foot 8 and the smooth foot 9 is broken; the second limiting member 14 is fixed to the lower surface of the connecting seat 4, and the second limiting member 14 is configured to: when the distance between the anti-slip foot 8 and the connecting seat 4 reaches a preset maximum distance, the second limiting member 14 abuts against the second connecting rod 7 to limit the swing amplitude of the second connecting rod 7 and the anti-slip foot 8.

[0061] The aforementioned method of using the single-cylinder translation mechanism 3 for large semi-trailers includes the following steps:

[0062] (1) As Figures 5 to 7 As shown, the single-cylinder translation mechanism 3 of the large semi-trailer is installed on the lower surface of the chassis of the large semi-trailer 2 via the connecting seat 4, and is located at the rear of the frame or the middle of the rear axle, so that the length direction of the smooth support leg 9 is perpendicular to the length direction of the large semi-trailer 2; the large semi-trailer 2 is towed by the tractor 1. The single-cylinder translation mechanism 3 of the large semi-trailer can be directly installed on the chassis or installed on the chassis via a telescopic device, depending on different vehicle heights and ground clearance requirements.

[0063] (2) Figure 6 and Figure 8As shown, when the large semi-trailer 2 is in or about to switch to normal driving state, the linear motion drive device 5 is adjusted to the minimum stroke so that the distance between the smooth support leg 9 and the connecting seat 4 is the shortest. At this time, the active travel component 100 is in the retracted state, the distance between the smooth support leg 9 and the connecting seat 4 is less than the preset distance, and the anti-slip support leg 8 is slidably connected to the smooth support leg 9 along the length direction through the first limiting component 300, and the smooth support leg 9 and the anti-slip support leg 8 are kept on the same horizontal plane, so that the follow-up travel component 200 is also in the retracted state.

[0064] (3) Figures 9 to 11 As shown, when the large semi-trailer 2 is preparing to turn or laterally move the rear of the vehicle, the following steps are performed: first, increase the stroke of the linear motion drive device 5 to the maximum stroke so that the rear of the vehicle is lifted and moved to the side; then decrease the stroke of the linear motion drive device 5 so that the rear of the vehicle continues to move to the side; repeat the above steps until the large semi-trailer 2 reaches the designated position; then, perform step (2).

[0065] Specifically, step (3) includes the following steps in sequence:

[0066] (a) such as Figure 9 As shown, when the large semi-trailer 2 is preparing to turn or laterally move the rear of the vehicle, the stroke of the linear motion drive device 5 is increased, and the anti-slip feet 8 and smooth feet 9 are lowered until they contact the ground.

[0067] (b) such as Figure 10 As shown, the linear motion drive 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-slip support leg 8 and the smooth support leg 9 is disconnected. The rear of the large semi-trailer 2 is lifted by the large semi-trailer single-cylinder translation mechanism 3 and moves to the side. The position of the second link 7 and the anti-slip support leg 8 is restricted by the second limiting member 14 to prevent the swing amplitude from being too large and deviating from the reasonable position.

[0068] (c) such as Figure 11 As shown, the stroke of the linear motion drive device 5 is reduced, and the anti-slip foot 8 gradually adheres to the ground due to its own weight, providing support to the rear of the vehicle. The smooth foot 9 has insufficient adhesion to the ground and gradually slides to the side, causing the rear of the vehicle to continue to move to the side until the smooth foot 9 completely leaves the ground.

[0069] (d) Repeat steps (a) through (c) to continue moving the rear of the vehicle to the side;

[0070] (e) After the large semi-trailer 2 completes the turning or lateral translation of the rear of the vehicle, the stroke of the linear motion drive device 5 is further reduced so that the rear of the large semi-trailer 2 contacts the ground and the smooth foot 9 is completely removed from the ground until the distance between the smooth foot 9 and the connecting seat 4 is less than the preset distance. The anti-slip foot 8 is slidably connected to the smooth foot 9 along the length direction by the first limiting component 300, and the smooth foot 9 and the anti-slip foot 8 are kept on the same horizontal plane. The linear motion drive device 5 is further adjusted to the minimum stroke so that the active travel component 100 and the follow-up travel component 200 are in the retracted state. After that, the large semi-trailer 2 returns to the normal driving state.

[0071] The aforementioned large semi-trailer single-cylinder translation mechanism 3 consists of smooth support legs 9, a linear motion drive device 5, and multiple pairs of ( Figure 1 The active walking mechanism 100 consists of two pairs of parallel first links 6 shown in the diagram, while the follow-up walking mechanism 200 consists of anti-slip feet 8 and at least one pair of parallel second links 7. The lifting and translational movement of the vehicle's rear end is achieved by utilizing the different frictional forces between the feet of the two walking mechanisms and the ground. This design is simple, uses fewer power units, and is economical.

[0072] The aforementioned large semi-trailer single-cylinder translation mechanism 3 mainly includes a linear motion drive device 5 (e.g., a hydraulic cylinder) driving a mechanical linkage mechanism. Only one linear motion drive device 5 is needed to realize the lifting and translation of the large semi-trailer 2. Compared with the existing technology, fewer power units are required, making it easier to arrange the vehicle. The structure is simpler, more economical, occupies less space, moves smoothly, and has a strong load-bearing capacity. It can be installed on large-tonnage semi-trailers or other large and extra-long vehicles for auxiliary steering and position adjustment.

[0073] The aforementioned single-cylinder translation mechanism 3 for large semi-trailers is installed at the rear of the chassis frame or rear axle of the large semi-trailer 2 to assist in lifting and steering. When the large semi-trailer 2 is traveling on a narrow road and the turning radius of the chassis's running gear is too large to pass through, the aforementioned single-cylinder translation mechanism 3, driven by the linear motion drive device 5, can lift and translate the rear of the semi-trailer, thereby assisting the vehicle in turning and allowing it to smoothly pass through narrow roads, or adjusting the position of the rear of the semi-trailer. The lifting and translation process of the aforementioned single-cylinder translation mechanism 3 for large semi-trailers is smooth and safe.

[0074] When the vehicle is in motion, the active walking component 100 and the follow-up walking component 200 can be retracted by adjusting the linear motion drive device 5 to the minimum stroke, so that the large semi-trailer single-cylinder translation mechanism 3 can be quickly folded up and further reduced in space.

[0075] The aforementioned large semi-trailer single-cylinder translation mechanism 3, through its ingenious structural design, can complete steering or lateral translation of the vehicle's rear end simply by adjusting the stroke of the linear motion drive device 5, making it easy to operate and highly reliable.

[0076] In some embodiments, such as Figure 1 , Figure 2 , Figures 4 to 5 , Figures 8 to 11 As shown, the first limiting component 300 includes a groove 11 and a limiting cylinder 10; the limiting cylinder 10 is located on the upper surface of the smooth support leg 9 and is close to the second end of the linear motion drive device 5; the groove 11 is located on the upper surface of the anti-slip support leg 8 and extends from the first end to the second end along the length direction of the anti-slip support leg 8, with a preset distance between the end of the groove 11 and the second end along the length direction of the anti-slip support leg 8; the opening of the groove 11 is horizontally arranged and faces the smooth support leg 9; the limiting cylinder 10 cooperates with the groove 11, and the limiting cylinder 10 is slidably disposed in the groove 11 or displaced from the groove 11. Thus, as Figure 6 and Figure 8 As shown, when the large semi-trailer 2 is in or about to switch to normal driving mode, the linear motion drive device 5 is adjusted to its minimum stroke to minimize the distance between the smooth support leg 9 and the connecting seat 4. At this time, the active travel component 100 is in the retracted state, the distance between the smooth support leg 9 and the connecting seat 4 is less than a preset distance, and the limiting cylinder 10 on the smooth support leg 9 is inside the slide groove 11, allowing the anti-slip support leg 8 to slidably connect to the smooth support leg 9 along its length direction, and keeping the smooth support leg 9 and the anti-slip support leg 8 on the same horizontal plane, so that the follow-up travel component 200 is also in the retracted state. When the distance between the smooth support leg 9 and the connecting seat 4 is greater than the preset distance, for example, when the linear motion drive device 5 is at its maximum stroke, the limiting cylinder 10 disengages from the slide groove 11, and the sliding connection between the anti-slip support leg 8 and the smooth support leg 9 is broken.

[0077] Similarly, in some embodiments, the first limiting component includes a groove and a limiting cylinder; the limiting cylinder is located on the upper surface of the anti-slip foot and is close to the second end of the linear motion drive device; the groove is located on the upper surface of the smooth foot and extends from the first end to the second end along the length direction of the smooth foot, with a preset distance between the end of the groove and the second end along the length direction of the smooth foot; the opening of the groove is horizontally arranged and faces the anti-slip foot side; the limiting cylinder cooperates with the groove, and the limiting cylinder is slidably disposed in the groove or displaced from the groove.

[0078] In some embodiments, such as Figure 1 , Figure 2 , Figures 8 to 11As shown, the second limiting member 14 is a limiting block; the limiting block is close to the hinge point between the second connecting rod 7 and the connecting seat 4; the limiting block is inclined toward the second connecting rod 7 to limit the swing amplitude of the second connecting rod 7 and the anti-slip support 8.

[0079] In some embodiments, the linear motion drive device 5 is one of a hydraulic cylinder, a pneumatic cylinder, or an electric cylinder.

[0080] In some embodiments, such as Figure 2 As shown, the single-cylinder translation mechanism 3 of the large semi-trailer also includes multiple pins (including long pins 13 and short pins 12); multiple hinge supports 18 are respectively provided on the lower surface of the connecting seat 4, the upper surface of the smooth support 9, and the upper surface of the anti-slip support 8; the first end of the first connecting rod 6 is hinged to the connecting seat 4 through the pin and the hinge support 18; the second end of the first connecting rod 6 is hinged to the smooth support 9 through the pin and the hinge support 18; the first end of the second connecting rod 7 is hinged to the connecting seat 4 through the pin and the hinge support 18; the second end of the second connecting rod 7 is hinged to the anti-slip support 8 through the pin and the hinge support 18.

[0081] In some embodiments, such as Figure 2 As shown, the first end of the linear motion drive device 5 is hinged to the lower surface of the connecting seat 4 via a short pin 12 and a hinge point support 18, and the second end of the linear motion drive device 5 is hinged to the body of the first connecting rod 6 via a long pin 13 and a hinge point support 18.

[0082] In some embodiments, such as Figure 1 and Figure 2 As shown, the upper ends of the two pairs of parallel first connecting rods 6 are mounted on the hinge support 18 of the connecting seat 4 via long pins 13, and the lower ends of the two pairs of parallel first connecting rods 6 are hinged to the smooth support foot 9 via long pins 13. The upper end of the second connecting rod 7 is mounted on the hinge support 18 of the connecting seat 4 via short pins 12, and the lower end of the second connecting rod 7 is hinged to the anti-slip support foot 8 via short pins 12.

[0083] In some embodiments, such as Figure 6 As shown, the single-cylinder translation mechanism 3 of the large semi-trailer also includes a telescopic device 301; the first end of the telescopic device 301 is fixedly connected to the upper surface of the connecting seat 4, and the second end of the telescopic device 301 is configured to be fixedly connected to the lower surface of the chassis of the large semi-trailer 2. During driving, the telescopic device 301 retracts (e.g., ...). Figure 6 When the single-cylinder translation mechanism 3 of the large semi-trailer is working, the telescopic device 301 extends (e.g., Figure 7 ).

[0084] In the description of the above embodiments, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0085] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A single-cylinder translation mechanism for a large semi-trailer, characterized in that, include: The system includes a connecting base, an active walking component, two symmetrically arranged follower walking components on both sides of the active walking component's direction of movement, two sets of first limiting components, and two second limiting components. The connecting seat is horizontally arranged, and both the active walking component and the follower walking component are hinged to the lower surface of the connecting seat; The active walking assembly includes a smooth support leg, a linear motion drive device, and multiple pairs of parallel first links. The smooth support leg is elongated and hinged to the connecting seat via the multiple pairs of first links, allowing the smooth support leg to swing along its length in a first vertical plane while maintaining a horizontal orientation. The lower surface of the smooth support leg is smooth. The linear motion drive device is located in the first vertical plane. The first end of the linear motion drive device is hinged to the lower surface of the connecting seat, and the second end is hinged to the body of the first link, thereby adjusting the angle between the first link and the connecting seat, and thus adjusting the distance between the smooth support leg and the connecting seat. The following walking component includes anti-slip feet and at least one pair of parallel second links; the anti-slip feet are elongated and hinged to the connecting seat via at least one pair of second links, so that the anti-slip feet can swing along their length in a second vertical plane and maintain a horizontal orientation; the lower surface of the anti-slip feet is provided with an anti-slip layer, and the second vertical plane is parallel to the first vertical plane; The first limiting component is located on the smooth foot and / or the anti-slip foot; the first limiting component is configured to: When the distance between the smooth support leg and the connecting seat is less than or equal to a preset distance, the first limiting component allows the anti-slip support leg to be slidably connected to the smooth support leg along the length direction, and keeps the smooth support leg and the anti-slip support leg on the same horizontal plane. If the distance between the smooth support leg and the connecting seat is greater than the preset distance, the sliding connection between the anti-slip support leg and the smooth support leg will be broken. The second limiting member is fixed to the lower surface of the connecting seat, and the second limiting member is configured as follows: When the distance between the anti-slip foot and the connecting seat reaches a preset maximum distance, the second limiting member abuts against the second connecting rod to limit the swing amplitude of the second connecting rod and the anti-slip foot.

2. The single-cylinder translation mechanism for large semi-trailers according to claim 1, characterized in that, The first limiting component includes a groove and a limiting cylinder; The limiting cylinder is located on the upper surface of the smooth support leg and is close to the second end of the linear motion drive device; The groove is located on the upper surface of the anti-slip foot and extends from the first end to the second end along the length direction of the anti-slip foot. A preset distance is left between the end of the groove and the second end along the length direction of the anti-slip foot. The groove opening is horizontally set and faces the smooth foot side. The limiting cylinder cooperates with the sliding groove, and the limiting cylinder can be slidably disposed in the sliding groove or displaced from the sliding groove.

3. The single-cylinder translation mechanism for large semi-trailers according to claim 1, characterized in that, The first limiting component includes a groove and a limiting cylinder; The limiting cylinder is located on the upper surface of the anti-slip foot and is close to the second end of the linear motion drive device; The groove is located on the upper surface of the smooth support leg and extends from the first end to the second end along the length direction of the smooth support leg. A preset distance is left between the end of the groove and the second end along the length direction of the smooth support leg. The groove opening is horizontally set and faces the anti-slip support leg. The limiting cylinder cooperates with the sliding groove, and the limiting cylinder can be slidably disposed in the sliding groove or displaced from the sliding groove.

4. The single-cylinder translation mechanism for large semi-trailers according to claim 1, characterized in that, The second limiting member is a limiting block; the limiting block is located near the hinge point between the second connecting rod and the connecting seat; the limiting block is inclined toward the second connecting rod to limit the swing amplitude of the second connecting rod and the anti-slip support foot.

5. The single-cylinder translation mechanism for large semi-trailers according to claim 1, characterized in that, The linear motion drive device is one of a hydraulic cylinder, a pneumatic cylinder, or an electric cylinder.

6. The single-cylinder translation mechanism for large semi-trailers according to claim 1, characterized in that, It also includes multiple pins; the lower surface of the connecting seat, the upper surface of the smooth support foot, and the upper surface of the anti-slip support foot are respectively provided with multiple hinge point supports; The first end of the first connecting rod is hinged to the connecting seat via the pin and the hinge point support; the second end of the first connecting rod is hinged to the smooth support leg via the pin and the hinge point support. The first end of the second connecting rod is hinged to the connecting seat via the pin and the hinge point support; the second end of the second connecting rod is hinged to the anti-slip foot via the pin and the hinge point support.

7. The single-cylinder translation mechanism for large semi-trailers according to claim 1, characterized in that, It also includes a telescopic device; the first end of the telescopic device is fixedly connected to the upper surface of the connecting seat, and the second end of the telescopic device is configured to be fixedly connected to the lower surface of the chassis of the large semi-trailer.

8. A method of using a single-cylinder translation mechanism for a large semi-trailer, characterized in that, The single-cylinder translation mechanism for large semi-trailers according to any one of claims 1 to 7 comprises the following steps: (1) The single-cylinder translation mechanism of the large semi-trailer is installed on the lower surface of the chassis of the large semi-trailer through the connecting seat and is located at the rear of the frame or the rear axle, 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 semi-trailer is in or about to switch to normal driving state, adjust the linear motion drive device to the minimum stroke so that the distance between the smooth support foot and the connecting seat is the shortest. At this time, the active walking component is in the retracted state, the distance between the smooth support foot and the connecting seat is less than the preset distance, and the anti-slip support foot is slidably connected to the smooth support foot along the length direction through the first limiting component, and the smooth support foot and the anti-slip support foot are kept on the same horizontal plane, so that the follow-up walking component is also in the retracted state. (3) When the large semi-trailer is about to turn or move the rear of the vehicle laterally, perform the following steps: first increase the stroke of the linear motion drive device to the maximum stroke so that the rear of the vehicle is lifted and moved to the side; then decrease the stroke of the linear motion drive device so that the rear of the vehicle continues to move to the side; repeat the above steps until the large semi-trailer reaches the designated position; then, perform step (2).

9. The method according to claim 8, characterized in that, Step (3) includes the following steps in sequence: (a) When the large semi-trailer is preparing to turn or laterally move the rear of the vehicle, increase the stroke of the linear motion drive device so that the smooth outrigger and the anti-slip outrigger contact the ground; (b) Adjust the linear motion drive device to the maximum stroke. At this time, the distance between the smooth support foot and the connecting seat is greater than the preset distance. The sliding connection between the anti-slip support foot and the smooth support foot is disconnected. The rear of the large semi-trailer is lifted by the single-cylinder translation mechanism of the large semi-trailer and moves to the side. The swing amplitude of the second link and the anti-slip support foot is limited by the second limiting member. (c) Reduce the stroke of the linear motion drive device, the anti-slip foot gradually contacts the ground and provides support to the rear of the vehicle, the smooth foot gradually slides to the side, so that the rear of the vehicle continues to move to the side until the smooth foot is completely off the ground. (d) Repeat steps (a) to (c) to continuously move the rear of the vehicle toward the side; (e) After the large semi-trailer completes its turning or lateral translation of the rear of the vehicle, the stroke of the linear motion drive device is further reduced so that the rear of the large semi-trailer contacts the ground and the smooth outriggers are completely off the ground until the distance between the smooth outriggers and the connecting seat is less than a preset distance. The first limiting component allows the anti-slip outriggers to be slidably connected to the smooth outriggers along the length direction, and the smooth outriggers and the anti-slip outriggers are kept on the same horizontal plane. The linear motion drive device is then adjusted to its minimum stroke so that the active walking component and the follow-up walking component are in the retracted state. After that, the large semi-trailer returns to its normal driving state.

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