A stabilizing outrigger structure for a special vehicle and a stabilizing support method for high-level operations.

Abstract

This invention discloses a stabilizing outrigger structure and a high-position operation stabilizing support method for special vehicles, including a front outrigger assembly and a rear outrigger assembly disposed on the chassis of the special vehicle. The front outrigger assembly includes a first lateral telescopic support portion and a first vertical support portion, and the rear outrigger assembly includes a second lateral telescopic support portion and a second vertical support portion. The front outrigger assembly further includes a first lateral guide member for guiding the lateral telescopic extension and retraction of the first lateral telescopic support portion, and a first limiting portion for restricting the lateral displacement of the first lateral telescopic support portion. The rear outrigger assembly further includes a second lateral guide member for guiding the lateral extension and retraction of the second lateral telescopic support portion. This stabilizing outrigger structure and high-position operation stabilizing support method for special vehicles can effectively increase the lateral support base distance during high-position operations, improving its overall stability and anti-overturning capability during the lifting and approaching of the vehicle body.

Description

Technical Field

[0001] This invention relates to the technical field of vehicle chassis support, and more particularly to a stabilizing outrigger structure for special vehicles and a method for stabilizing support during high-level operations. Background Technology

[0002] Special-purpose vehicles typically require lifting mechanisms such as scissor lifts or telescopic booms to raise the load box to a higher position during operations. As the working height increases, the vehicle's overall center of gravity rises significantly, placing stringent demands on the lateral support stability and anti-tipping capabilities of the vehicle chassis.

[0003] Existing support structures mostly focus on vertical support, typically using outriggers that extend downwards to contact the ground to bear part of the vehicle's weight during operation. However, this type of support usually has a small support base distance, especially after the vehicle body is lifted, resulting in limited lateral anti-tipping capacity and making it difficult to balance stability, safety, and operational reliability in high-position operations. Summary of the Invention

[0004] In view of the problem of easy swaying and instability of existing outriggers for special vehicles, this invention is proposed.

[0005] Therefore, one object of the present invention is to provide a stabilizing outrigger structure for special vehicles, the purpose of which is to improve the overall stability and anti-overturning capability of special vehicles in high-position operation.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a stabilizing outrigger structure for a special vehicle, comprising a front outrigger assembly and a rear outrigger assembly disposed on the chassis of the special vehicle; the front outrigger assembly includes a first lateral telescopic support portion and a first vertical support portion, and the rear outrigger assembly includes a second lateral telescopic support portion and a second vertical support portion; wherein, the front outrigger assembly further includes a first lateral guide member for guiding the lateral telescopic support portion to extend and retract laterally, and a first limiting portion for limiting the lateral displacement of the first lateral telescopic support portion; the rear outrigger assembly further includes a second lateral guide member for guiding the lateral telescopic support portion to extend and retract laterally, and a fixed support portion for fixing the second lateral guide member to the chassis; the first vertical support portion and the second vertical support portion are both disposed at the outer support positions of the corresponding lateral telescopic support portions.

[0007] As a preferred embodiment of the stabilizing outrigger structure for the special vehicle described in this invention, at least one of the guiding engagement portions between the first lateral guide member and the first lateral telescopic support member, and between the second lateral guide member and the second lateral telescopic support member, is provided with a wear-resistant plate; the wear-resistant plate is located between the corresponding lateral guide member and the corresponding lateral telescopic support member, and forms a sliding contact with the corresponding lateral telescopic support member to withstand the sliding friction between the corresponding lateral guide member and the corresponding lateral telescopic support member.

[0008] As a preferred embodiment of the stabilizing outrigger structure for the special vehicle described in this invention, it further includes a locking and limiting structure, wherein the locking and limiting structure is disposed at the mating position of the corresponding lateral telescopic support and the corresponding lateral guide at the end of their outward travel; the locking and limiting structure includes a limiting member disposed on one of the corresponding lateral guide and the corresponding lateral telescopic support, and a stop portion disposed on the other; when the corresponding lateral telescopic support extends to a predetermined outward position, the stop portion and the limiting member abut against each other in the outward direction to limit the corresponding lateral telescopic support from continuing to extend outward.

[0009] As a preferred embodiment of the stabilizing outrigger structure for the special vehicle described in this invention, the locking and limiting structure further includes a locking member, which is disposed at the corresponding positions of the limiting member and the stop portion; when the stop portion and the limiting member abut against each other in the outward extension direction, the locking member, the limiting member, and the stop portion form a locking engagement to restrict the movement of the corresponding lateral telescopic support relative to the corresponding lateral guide member in the retraction direction.

[0010] As a preferred embodiment of the stabilizing outrigger structure for the special vehicle described in this invention, it further includes a hydraulic assembly respectively disposed on the front outrigger assembly and the rear outrigger assembly. The hydraulic assembly includes a horizontal telescopic cylinder and a vertical outrigger cylinder. The horizontal telescopic cylinder is drivenly connected to a corresponding lateral telescopic support, and the vertical outrigger cylinder is drivenly connected to a corresponding vertical support. The horizontal telescopic cylinder is connected to a first hydraulic circuit, and the vertical outrigger cylinder is connected to a second hydraulic circuit independent of the first hydraulic circuit.

[0011] As a preferred embodiment of the stabilizing outrigger structure for the special vehicle described in this invention, the lower ends of both the first vertical support and the second vertical support are connected to grounding support portions; the grounding support portion is located at the lowest bearing end of the corresponding vertical support portion, and the outer dimension of the grounding support portion in the top view direction is larger than the outer dimension of the connecting portion at the lower end of the corresponding vertical support portion.

[0012] As a preferred embodiment of the stabilizing outrigger structure for the special vehicle described in this invention, the front outrigger assembly and the rear outrigger assembly are spaced apart along the longitudinal direction of the vehicle; the first lateral telescopic support portion includes left and right first lateral telescopic support members that extend and retract to the left and right sides of the vehicle body respectively, and the first vertical support portion includes left and right first vertical support members that are respectively disposed at the outer support positions of the left and right first lateral telescopic support members; the second lateral telescopic support portion includes left and right second lateral telescopic support members that extend and retract to the left and right sides of the vehicle body respectively, and the second vertical support portion includes left and right second vertical support members that are respectively disposed at the outer support positions of the left and right second lateral telescopic support members.

[0013] As a preferred embodiment of the stabilizing outrigger structure for the special vehicle described in this invention, wherein: the first lateral guide is a lower outrigger horizontal tube arranged laterally along the vehicle, and the first lateral telescopic support portion slides in cooperation with the lower outrigger horizontal tube; the first limiting portion is an inner support plate arranged near the inner side of the vehicle body, the inner support plate is arranged opposite to the inner side of the first lateral telescopic support portion, and forms a lateral limiting cooperation with the first lateral telescopic support portion.

[0014] As a preferred embodiment of the stabilizing outrigger structure for the special vehicle described in this invention, the second lateral guide is a rear base slide tube arranged laterally along the vehicle, and the second lateral telescopic support is slidably engaged with the rear base slide tube; the fixed support is disposed between the rear base slide tube and the special vehicle chassis, and is connected to the rear base slide tube to position and support the rear base slide tube on the special vehicle chassis.

[0015] As a preferred embodiment of the stabilizing outrigger structure for the special vehicle described in this invention, the first lateral guide includes two first guides respectively disposed on the left and right sides of the vehicle body, and the two first guides are slidably engaged with the first lateral telescopic support portion on the corresponding side; the second lateral guide is a second guide that extends continuously along the lateral direction of the vehicle, and the second guide is slidably engaged with the second lateral telescopic support portion on the left and right sides of the vehicle body; the fixed support portion is connected between the second guide and the chassis of the special vehicle.

[0016] Another objective of this invention is to provide a method for stabilizing support of special vehicles operating at high positions, applied to the stabilizing outrigger structure of the aforementioned special vehicles, wherein: it includes driving the lateral telescopic support portions in the front outrigger assembly and the rear outrigger assembly to extend to both sides of the vehicle body via a horizontal telescopic hydraulic cylinder; After the lateral telescopic support extends into place, the position of the lateral telescopic support is restricted by the locking and limiting structure. The vertical support is extended downward by the hydraulic cylinder of the vertical outrigger, so that the ground support contacts the ground and transfers the weight of the special vehicle to the ground.

[0017] As a preferred embodiment of the high-position operation stabilization support method for special vehicles described in this invention, the first lateral guide component in the front outrigger assembly is a lower outrigger horizontal tube, the first limiting part is an inner support plate, the lateral telescopic support part in the front outrigger assembly extends and retracts along the lower outrigger horizontal tube, and is laterally limited and supported by the inner support plate; the second lateral guide component in the rear outrigger assembly is a rear base slide tube, the lateral telescopic support part in the rear outrigger assembly extends and retracts along the rear base slide tube, and is positioned and supported by a fixed support part.

[0018] As a preferred embodiment of the high-level operation stabilization support method for special vehicles described in this invention, after the high-level operation is completed, the ground support part is first lifted off the ground by the vertical outrigger cylinder, and then the lateral telescopic support part is retracted into the vehicle body by the horizontal telescopic cylinder.

[0019] The beneficial effects of this invention are as follows: By setting up a front outrigger assembly and a rear outrigger assembly, and by having the lateral telescopic support extend to both sides of the vehicle body first, and the vertical support then establish ground support downwards at the outwardly moved support position, the lateral support base distance of the special vehicle during high-level operations can be effectively increased, improving its overall stability and anti-overturning capability during the lifting and approaching of the vehicle body. Simultaneously, this invention guides, limits, and supports the lateral telescopic support in the front and rear outrigger assemblies through the lower outrigger horizontal tube, inner support plate, rear base slide tube, and fixed support, respectively. Furthermore, the locking and limiting structure restricts or locks the outward extension position of the lateral telescopic support, thus helping to maintain structural stability after the support is deployed. This invention connects the horizontal telescopic cylinder and the vertical outrigger cylinder to independent hydraulic circuits, and sets a ground support at the lower end of the vertical support, thereby facilitating step-by-step control of lateral expansion and vertical load bearing, increasing the ground support area, and improving the support reliability and safety of the special vehicle during high-level operations. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the front outrigger assembly of the stabilizing outrigger structure for special vehicles according to the present invention.

[0022] Figure 2This is a front view schematic diagram of the front outrigger assembly of the stabilizing outrigger structure for special vehicles according to the present invention.

[0023] Figure 3 This is a front view schematic diagram of the rear outrigger assembly of the stabilizing outrigger structure for special vehicles according to the present invention.

[0024] Figure 4 This is a top view schematic diagram of the rear outrigger assembly of the stabilizing outrigger structure for the special vehicle of the present invention.

[0025] Figure 5 The bar chart shows the changes in the equivalent support base distance for each scheme.

[0026] Figure 6 The graph shows the changes in the roll angle for each scheme.

[0027] Explanation of reference numerals in the attached drawings: 100, front outrigger assembly; 101, first lateral telescopic support; 101a, first lateral guide; 101b, first limiting part; 102, first vertical support; 200, rear outrigger assembly; 201, second lateral telescopic support; 201a, second lateral guide; 201b, fixed support; 202, second vertical support; 300, wear-resistant plate; 400, locking and limiting structure; 500, hydraulic assembly; 501, horizontal telescopic cylinder; 502, vertical outrigger cylinder; 600, grounding support. Detailed Implementation

[0028] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0029] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0030] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0031] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0032] Example 1

[0033] Reference Figure 1 and Figure 3 The first embodiment of the present invention provides a stabilizing outrigger structure for a special vehicle. This device includes a front outrigger assembly 100 and a rear outrigger assembly 200 disposed on the chassis of the special vehicle. The front outrigger assembly 100 includes a first lateral telescopic support portion 101 and a first vertical support portion 102, and the rear outrigger assembly 200 includes a second lateral telescopic support portion 201 and a second vertical support portion 202.

[0034] The front outrigger assembly 100 further includes a first lateral guide 101a for guiding the lateral extension and retraction of the first lateral telescopic support 101, and a first limiting part 101b for limiting the lateral offset of the first lateral telescopic support 101; the rear outrigger assembly 200 further includes a second lateral guide 201a for guiding the lateral extension and retraction of the second lateral telescopic support 201, and a fixed support part 201b for fixing the second lateral guide to the chassis; the first vertical support part 102 and the second vertical support part 202 are both disposed at the outer support position of the corresponding lateral telescopic support part.

[0035] The first lateral telescopic support 101 extends and retracts under the guidance of the first lateral guide 101a and is limited by the first limiting part 101b; the second lateral telescopic support 201 extends and retracts under the guidance of the second lateral guide 201a and is supported on the chassis by the fixed support part 201b; the first vertical support 102 and the second vertical support 202 are both provided at the outer support position of the corresponding lateral telescopic support.

[0036] It should be noted that, in this embodiment, the first lateral guide 101a of the front outrigger assembly 100 is preferably in the form of a lower outrigger cross tube, and the first limiting part 101b is preferably in the form of an inner support plate; the second lateral guide 201a of the rear outrigger assembly 200 is preferably in the form of a rear base slide tube. However, in other alternative embodiments of the present invention, the first lateral guide 101a and the second lateral guide 201a may also adopt linear guide structures commonly used in the art, such as linear guide rails, dovetail slide rails, or roller guide mechanisms; the first limiting part 101b may also adopt a limiting block, guide roller, or other structures, as long as it can achieve the guiding and lateral anti-deviation functions of the lateral telescopic support part, all of which should be included within the protection scope of the present invention.

[0037] In this embodiment, although both the front outrigger assembly 100 and the rear outrigger assembly 200 are used to provide outward support and vertical load-bearing for special vehicles operating at high positions, they do not use the same lateral guide foundation. Instead, they are equipped with different guide and support forms according to the different structural layout conditions of the front and rear areas of the special vehicle chassis. Specifically, the first lateral telescopic support part 101 in the front outrigger assembly 100 is laterally guided by the first lateral guide 101a and laterally limited by the first limiting part 101b located near the inner side of the vehicle body; the second lateral telescopic support part 201 in the rear outrigger assembly 200 is laterally guided by the second lateral guide 201a and positioned and supported by the fixed support part 201b located between the second lateral guide 201a and the chassis. With the above arrangement, the front outrigger assembly 100 forms a guide unit corresponding to the first lateral telescopic support 101 in the front region, and the rear outrigger assembly 200 forms a guide support unit corresponding to the second lateral telescopic support 201 in the rear region, so that the front and rear outrigger assemblies can respectively adapt to the different installation spaces and support conditions in the front and rear regions of the special vehicle chassis.

[0038] From the perspective of load transfer path, the stable support in this embodiment does not directly establish ground support downwards near the chassis. Instead, the first lateral telescopic support 101 and the second lateral telescopic support 201 first transfer the support positions of the front and rear parts from near the chassis to the outside of the vehicle body, respectively. Then, the first vertical support 102 and the second vertical support 202, located at the corresponding outer support positions, establish ground support downwards. When the special vehicle is in a high-level operation state, the loads generated by the lifting of the cargo box, load offset, personnel movement, and external lateral disturbances can be transferred from the chassis to the front outrigger assembly 100 and the rear outrigger assembly 200, respectively. Then, they are transferred through the first lateral telescopic support 101 and the second lateral telescopic support 201 to the first vertical support 102 and the second vertical support 202, and finally act on the ground. Correspondingly, the reaction force of the ground is fed back to the chassis through the first vertical support 102, the second vertical support 202, the first lateral telescopic support 101, and the second lateral telescopic support 201. In other words, this embodiment uses the method of "lateral outward movement followed by vertical bearing" to ensure that both the front and rear support points are within the expanded support base distance range. This allows the lateral overturning moment experienced by the special vehicle in a high-position operation to be resisted by a larger support span, thereby improving the vehicle's anti-overturning ability and lateral stability.

[0039] Furthermore, regarding the front outrigger assembly 100, since the first lateral guide 101a is configured as a left-right split, each side of the lateral telescopic support can form a relatively independent force transmission path in the corresponding front area when it extends and bears load. When one side of the front outrigger bears a large vertical load or lateral component force first due to local unevenness of the ground, uneven loading of the body, or instantaneous lateral sway, the load on that side can be directly transmitted to the front chassis area through the vertical support, lateral telescopic support, and first lateral guide 101a on the corresponding side, without first passing through a long lateral guide to the left and right and then spreading to the other side. Thus, on the one hand, the closed path of force transmission after local loading at the front can be shortened, and on the other hand, it is also beneficial to reduce the possibility of large bending deformation or local torsion of long-span lateral members in the confined space at the front due to uneven loading. At the same time, the first limiting part 101b, which is located near the inside of the vehicle body, not only plays a position limiting role, but also restrains the swaying tendency of the lateral telescopic support in the inward direction when it is extended. When the lateral telescopic support is subjected to a lateral force caused by eccentric loading, ground elevation difference, or vehicle posture change, the first limiting part 101b can act as an inner reaction force support part, forming additional lateral support for the lateral telescopic support part, thereby reducing the possibility of inward swinging, tilting, biting, or local jamming in the extended state, which is beneficial to maintaining the guiding stability of the front outrigger assembly 100 during the telescopic process and the posture stability during the load-bearing process.

[0040] For the rear outrigger assembly 200, since the second lateral guide 201a is integrally and continuously installed and supported on the chassis by the fixed support 201b, a relatively continuous lateral guiding reference and overall support foundation can be formed in the rear region. When the left and right rear outriggers are in the extended state and bear vertical loads, lateral forces, and additional moments caused by changes in the rear attitude of the vehicle, the integral second lateral guide 201a can provide a consistent guiding foundation for the left and right lateral telescopic support parts, making it easier for the extended paths of the two rear outriggers to maintain a coaxial or collinear relationship, thereby reducing the risk of inconsistent guidance, local deviation, or unilateral instability of the left and right rear outriggers under load. Furthermore, when the load on one rear outrigger increases, the relevant forces can be absorbed as a whole in the rear region by the second lateral guide 201a and transmitted and dispersed to the chassis through the fixed support 201b, so that the support reaction force in the rear region is not limited to a single point of local bearing, but can form a relatively integral force-bearing foundation by relying on the continuous slide tube and multiple support points. Therefore, the rear outrigger assembly 200 not only has a lateral guiding function, but also enhances the overall rigidity of the rear area, improves the force coordination between the left and right outriggers, and improves the stability of the rear support system.

[0041] The front outrigger assembly 100 adopts a split structure of a first lateral guide 101a and a first limiting part 101b, focusing on adapting to the relatively limited arrangement space in the front area and achieving lateral guidance, lateral force bearing, and inner limiting. The rear outrigger assembly 200 adopts an integrated structure of a second lateral guide 201a and a fixed support part 201b, focusing on forming a continuous guiding reference, an overall support foundation, and the distributed transmission of lateral forces in the rear area. Although the front and rear outrigger assemblies both serve the purpose of stable support for special vehicles during high-level operations, their structural organization, guiding constraint methods, and load transmission methods are different, forming differentiated settings based on the different installation conditions and force requirements of the front and rear areas of the chassis. Through the aforementioned differentiated arrangement, the front and rear outrigger assemblies can form more clearly defined force paths in their respective areas, and together constitute a stable support system that expands laterally first, bears load vertically laterally, adapts to front and rear zones, and provides overall coordinated support. This is more conducive to improving the anti-swaying and anti-overturning capabilities of special vehicles during the lifting and docking of the cargo box.

[0042] In this embodiment, the first lateral telescopic support 101 and the second lateral telescopic support 201 first extend outwards, and then the first vertical support 102 and the second vertical support 202 bear the ground downwards at the moved support position. This support establishment method allows the vertical support point to fall directly within the expanded lateral support range, rather than forming a support near the chassis first and then attempting to expand the support width. Therefore, the support base distance formed by the lateral expansion action can be fully utilized to resist the lateral overturning tendency under high-level operation conditions, and makes the load path transmitted from the chassis to the ground more direct and clear.

[0043] During use, when the special vehicle is preparing to perform high-level operations, the first lateral telescopic support 101 in the front outrigger assembly 100 and the second lateral telescopic support 201 in the rear outrigger assembly 200 first move outwards from the vehicle body. Specifically, the first lateral telescopic support 101 in the front outrigger assembly 100 extends outwards under the guidance of the first lateral guide 101a and the limitation of the first limiting part 101b, while the second lateral telescopic support 201 in the rear outrigger assembly 200 extends outwards under the guidance of the second lateral guide 201a and the support of the fixed support part 201b, thereby increasing the support span of the special vehicle chassis in the lateral direction. After the first lateral telescopic support 101 and the second lateral telescopic support 201 reach the predetermined extended state, the first vertical support 102 and the second vertical support 202 extend downwards from the corresponding outer support positions and contact the ground to form vertical load-bearing support for the special vehicle. After the operation is completed, the first vertical support 102 and the second vertical support 202 move upward and off the ground. Then, the first lateral telescopic support 101 and the second lateral telescopic support 201 retract into the vehicle body, so that the stabilizing outrigger structure returns to the non-operational state.

[0044] Example 2

[0045] Reference Figures 1-4 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that the first lateral guide 101a is arranged laterally along the vehicle, and the first limiting part 101b is arranged near the inside of the vehicle body to provide lateral limiting support for the first lateral telescopic support part 101 in the front outrigger assembly 100.

[0046] The first lateral guide 101a is a lateral guide base in the front outrigger assembly 100, extending along the width direction of the special vehicle. The first lateral telescopic support 101 in the front outrigger assembly 100 extends and retracts laterally along the vehicle under the guidance of the first lateral guide 101a. The first limiting part 101b is located in the front outrigger assembly 100 near the inner side of the vehicle body and is located in the corresponding area inside the first lateral telescopic support 101. When the first lateral telescopic support 101 moves outward along the first lateral guide 101a, the first limiting part 101b restricts and supports the inner position of the first lateral telescopic support 101, so that the first lateral telescopic support 101 forms a cooperative relationship in which the first lateral guide 101a provides lateral guidance and the first limiting part 101b provides lateral limitation, thereby helping to reduce lateral deviation during its extension process.

[0047] The second lateral guide 201a is arranged laterally along the vehicle, and the fixed support 201b is disposed between the second lateral guide 201a and the chassis to position and support the second lateral guide 201a. The second lateral telescopic support 201 in the rear outrigger assembly 200 extends and retracts laterally along the vehicle under the guidance of the second lateral guide 201a. The fixed support 201b is used to support and fix the second lateral guide 201a to the rear area of ​​the special vehicle chassis, so that the second lateral telescopic support 201 can stably extend and retract along the path defined by the second lateral guide 201a, and the force is transmitted to the chassis through the fixed support 201b.

[0048] At least one of the guide engagement portions between the first lateral guide 101a and the first lateral telescopic support 101, and between the second lateral guide 201a and the second lateral telescopic support 201, is provided with a wear-resistant plate 300; the wear-resistant plate 300 is located between the corresponding lateral guide and the corresponding lateral telescopic support, and forms a sliding contact with the corresponding lateral telescopic support to withstand the sliding friction between the corresponding lateral guide and the corresponding lateral telescopic support.

[0049] The first lateral guide 101a is a lower support leg tube arranged laterally along the vehicle, and the first lateral telescopic support 101 is slidably engaged with the lower support leg tube; the first limiting part 101b is an inner support plate arranged near the inner side of the vehicle body, the inner support plate is arranged opposite to the inner part of the first lateral telescopic support 101, and forms a lateral limiting engagement with the first lateral telescopic support 101.

[0050] The inner support plate is an L-shaped or vertical steel plate, and its surface slides against the inner wall of the first transverse telescopic support 101 to achieve anti-deviation and limiting.

[0051] The second lateral guide 201a adopts a rear base slide tube arranged in the lateral direction of the vehicle, and the second lateral telescopic support 201 slides in conjunction with the rear base slide tube. The fixed support part 201b is disposed between the rear base slide tube and the special vehicle chassis and is connected to the rear base slide tube to position and support the rear base slide tube on the special vehicle chassis.

[0052] The first lateral guide 101a includes two first guides respectively disposed on the left and right sides of the vehicle body, and the two first guides are slidably engaged with the first lateral telescopic support 101 on the corresponding side; the second lateral guide 201a is a second guide that extends continuously along the lateral direction of the vehicle, and the second guide is slidably engaged with the second lateral telescopic support 201 on the left and right sides of the vehicle body; the fixed support 201b is connected between the second guide and the special vehicle chassis.

[0053] The wear-resistant plate 300 is located between the corresponding contact mating parts to withstand the contact friction during the expansion and contraction process, thereby reducing the direct wear of the mating parts and helping to maintain the guiding stability of the first lateral expansion and contraction support 101 and the second lateral expansion and contraction support 201 during the expansion and contraction process.

[0054] During use, the first lateral telescopic support 101 in the front outrigger assembly 100 extends outward to the outside of the vehicle body under the guidance of the first lateral guide 101a and the limitation of the first limiting part 101b, and the second lateral telescopic support 201 in the rear outrigger assembly 200 extends outward to the outside of the vehicle body under the guidance of the second lateral guide 201a and the limitation of the fixed support part 201b. During the above telescopic process, the wear-resistant plate 300 forms wear-resistant support for the corresponding mating parts. After the first lateral telescopic support 101 and the second lateral telescopic support 201 extend into place, the first vertical support 102 and the second vertical support 202 are driven by the vertical outrigger cylinder 502 to extend downward to the ground at the corresponding outer support position and bear the ground load, so as to form a stable support state suitable for high-level operation of special vehicles.

[0055] The remaining structure is the same as that in Example 1.

[0056] Example 3

[0057] Reference Figures 1-4 This is the third embodiment of the present invention, which differs from the second embodiment in that it further includes a locking and limiting structure 400. The locking and limiting structure 400 is disposed at the mating position of the corresponding transverse telescopic support and the corresponding transverse guide at the end of their outward stroke. The locking and limiting structure 400 includes a limiting member disposed on one of the corresponding transverse guide and the corresponding transverse telescopic support, and a stop portion disposed on the other. When the corresponding transverse telescopic support extends to a predetermined outward position, the stop portion and the limiting member abut against each other in the outward direction to limit the corresponding transverse telescopic support from continuing to extend outward.

[0058] The locking and limiting structure 400 also includes a locking member, which is disposed at the corresponding position of the limiting member and the stop. When the stop and the limiting member abut against each other in the extension direction, the locking member, the limiting member and the stop form a locking engagement to restrict the movement of the corresponding lateral telescopic support relative to the corresponding lateral guide member in the retraction direction.

[0059] In a preferred physical implementation, the limiting element can be a limiting block or flange that is welded or bolted to the outer end of the lower support leg horizontal tube or the rear base slide tube; the stopping part can be a stop shoulder or limiting pin protruding from the tail of the first lateral telescopic support 101 or the second lateral telescopic support 201. When the lateral telescopic support extends to its maximum working stroke, the stop shoulder and the limiting block physically interfere and abut.

[0060] The locking mechanism can be, for example, a mechanical pin structure or a hydraulic lock structure. When a mechanical pin is used, with the limit block and the stop shoulder abutting, the mechanical pin can pass through the pre-reserved concentric pin holes of both to form a mechanical hard lock. When a hydraulic lock is used, the bidirectional hydraulic lock in the circuit of the horizontal telescopic cylinder 501 can be controlled to maintain pressure and lock after the cylinder extends to the position, thereby preventing the lateral telescopic support from retracting inward due to unexpected lateral forces during operation and ensuring the absolute stability of the support base distance.

[0061] The locking and limiting structure 400 is disposed in the corresponding region of the outward extension end of the first lateral telescopic support 101 and / or the second lateral telescopic support 201, and is located at the adjacent mating position of the corresponding lateral telescopic support and its guide member. For the front outrigger assembly 100, the locking and limiting structure 400 is disposed between the first lateral telescopic support 101 and the first lateral guide 101a; for the rear outrigger assembly 200, the locking and limiting structure 400 is disposed between the second lateral telescopic support 201 and the second lateral guide 201a. A portion of the locking and limiting structure 400 is disposed at the corresponding position of the first lateral guide 101a and / or the second lateral guide 201a, and another portion is disposed at the corresponding position of the corresponding lateral telescopic support, so that the first lateral telescopic support 101 and / or the second lateral telescopic support 201 form a limiting or holding relationship after extending to the predetermined position, thereby helping to prevent them from continuing to move outward or retract inward, so as to maintain the stability of the support position after the outward movement.

[0062] The locking and limiting structure 400 may include limiting members disposed at corresponding positions of the first lateral guide 101a and / or the second lateral guide 201a, and a stop portion disposed at a corresponding position of the corresponding lateral telescopic support portion; when the first lateral telescopic support portion 101 and / or the second lateral telescopic support portion 201 extends to a predetermined position, the stop portion abuts against the limiting member to limit the further outward movement of the corresponding lateral telescopic support portion. Optionally, a locking member may also be provided at the corresponding positions of the limiting member and the stop portion to maintain the extended state of the first lateral telescopic support portion 101 and / or the second lateral telescopic support portion 201 after it reaches the predetermined extended position.

[0063] The system also includes hydraulic assemblies 500 respectively disposed in the front outrigger assembly 100 and the rear outrigger assembly 200. The hydraulic assembly 500 includes a horizontal telescopic cylinder 501 and a vertical outrigger cylinder 502. The horizontal telescopic cylinder 501 is drivenly connected to the corresponding lateral telescopic support, and the vertical outrigger cylinder 502 is drivenly connected to the corresponding vertical support. The horizontal telescopic cylinder 501 is connected to a first hydraulic circuit, and the vertical outrigger cylinder 502 is connected to a second hydraulic circuit independent of the first hydraulic circuit. The output end of the horizontal telescopic cylinder 501 is drivenly connected to the corresponding lateral telescopic support, and the output end of the vertical outrigger cylinder 502 is connected to the corresponding vertical support. By connecting the lateral telescopic action and the vertical support action to different hydraulic circuits, the lateral outward movement and vertical grounding can be performed sequentially, and the retraction process corresponds to the deployment process.

[0064] The lower ends of both the first vertical support 102 and the second vertical support 202 are connected to grounding support 600. The grounding support 600 is located at the lowest bearing end of the corresponding lower vertical support, and its outer dimension in the top view is larger than the outer dimension of the connecting part at the lower end of the corresponding vertical support. Therefore, when the first vertical support 102 and the second vertical support 202 move downward and touch the ground, the grounding support 600 can form a large ground support area to distribute the load onto the ground.

[0065] The first vertical support portion 102 in the front outrigger assembly 100 and the second vertical support portion 202 in the rear outrigger assembly 200 are both located on the outer support positions of the corresponding lateral telescopic support portions. After the first lateral telescopic support portion 101 and the second lateral telescopic support portion 201 extend outward, the first vertical support portion 102 and the second vertical support portion 202 can establish ground support downward at the outwardly moved support position. The locking and limiting structure 400 is used to maintain the outwardly moved support position, so that the front outrigger assembly 100 and the rear outrigger assembly 200 form a stable support foundation when operating at a high position.

[0066] During use, the first hydraulic circuit first drives the first lateral telescopic support 101 and the second lateral telescopic support 201 to move outward along the first lateral guide 101a and the second lateral guide 201a, respectively. After they move to the predetermined extension position, the locking and limiting structure 400 engages with the corresponding lateral telescopic support to restrict or maintain its extension position. Subsequently, the second hydraulic circuit drives the first vertical support 102 and the second vertical support 202, together with their lower ground support 600, to move downward until the ground support 600 contacts the ground and forms a support. After the operation is completed, the second hydraulic circuit controls the first vertical support 102 and the second vertical support 202 to lift up, causing the ground support 600 to detach from the ground. Afterward, the first hydraulic circuit controls the first lateral telescopic support 101 and the second lateral telescopic support 201 to retract into the vehicle body along the original guide path, returning to the stored state.

[0067] The remaining structure is the same as that in Example 2.

[0068] Example 4

[0069] This embodiment also provides a method for stabilizing and supporting special vehicles in high-position operations, applied to the stabilizing outrigger structure of the special vehicle described in the above embodiment, including the following steps: S1. The horizontal telescopic support parts in the front outrigger assembly 100 and the rear outrigger assembly 200 are driven to extend to both sides of the vehicle body by the horizontal telescopic cylinder 501. S2. After the lateral telescopic support extends into place, the position of the lateral telescopic support is restricted by the locking and limiting structure 400. S3. The vertical support part is driven to extend downward by the vertical outrigger cylinder 502, so that the ground support part 600 contacts the ground and transfers the weight of the special vehicle to the ground.

[0070] In S1, the horizontal telescopic cylinders 501 in the front outrigger assembly 100 and the rear outrigger assembly 200 are activated respectively. The output end of the horizontal telescopic cylinder 501 pushes the corresponding lateral telescopic support part to move laterally from the storage position near the chassis to the outside of the vehicle body. The lateral telescopic support in the front outrigger assembly 100 extends laterally under the guidance of the first lateral guide 101a and the limitation of the first limiting part 101b. The first lateral guide 101a guides the extension direction of the lateral telescopic support, and the first limiting part 101b is located on the side closer to the inside of the vehicle body, limiting the inner position of the lateral telescopic support so that it is not easy to sway inward during outward movement. The lateral telescopic support in the rear outrigger assembly 200 extends laterally under the guidance of the second lateral guide 201a and the support of the fixed support part 201b on the chassis. The second lateral guide 201a guides the extension direction of the lateral telescopic support, and the fixed support part 201b positions and supports the second lateral guide 201a in the rear area of ​​the chassis, so that the lateral telescopic support can extend stably outward along a predetermined lateral path. Through this step, the front and rear outrigger assemblies respectively shift the support position of the subsequent vertical support from the position close to the chassis to the outside of the vehicle body, so as to increase the support span of the special vehicle in the lateral direction.

[0071] Furthermore, in S1, the mating parts of the lateral telescopic support and the first lateral guide 101a and / or the mating parts of the lateral telescopic support and the second lateral guide 201a are in a relatively sliding state. The wear-resistant plate 300 disposed at the mating parts forms a wear-resistant support surface for the lateral telescopic support. That is to say, when the lateral telescopic support extends outward, it is not pushed out directly by the hydraulic cylinder without constraint, but rather completes the outward movement within the path defined by the corresponding guide member. The wear-resistant plate 300 is located in the friction contact area and is used to withstand the contact wear during the telescopic process, so that the lateral telescopic support can complete the outward movement relatively smoothly under different guiding constraint conditions at the front and rear.

[0072] In step S2, after the lateral telescopic support moves to the predetermined extension position, the locking and limiting structure 400, located between the lateral telescopic support and the first lateral guide 101a and / or between the lateral telescopic support and the second lateral guide 201a, begins to function. The locking and limiting structure 400 is located at the end region of the lateral telescopic support's extension stroke; one part is located at the corresponding position on the corresponding guide, and the other part cooperates with the corresponding part of the lateral telescopic support. When the lateral telescopic support reaches the predetermined extension position, the locking and limiting structure 400 blocks its continued outward movement and restricts or maintains its final extension position. Through this step, the lateral telescopic support can maintain its predetermined extension state after completing its extension, thereby providing a stable lateral foundation position for the subsequent downward grounding of the vertical support and preventing the lateral telescopic support from continuing to move or retract during the downward grounding process of the vertical support.

[0073] In step S3, the vertical outrigger cylinder 502 actuates, causing the vertical support to move downwards in the vertical direction. The grounding support 600, located at the lower end of the vertical support, moves downwards accordingly until its lower surface contacts the ground. The grounding support 600 is located at the lowest bearing end of the lower vertical support, and its overall dimensions in the top view are larger than the overall dimensions of the connecting portion at the lower end of the vertical support, thus forming a larger grounding support surface after grounding. As the vertical support continues to extend downwards, at least part of the weight of the special vehicle in its high-level operation state is transferred from the chassis to the ground via the front and rear outrigger assemblies, thereby borne by the grounding support 600. At this time, the lateral telescopic support is already in the extended and locked position, and the vertical support establishes ground support at the corresponding outer support position of the lateral telescopic support. The two work together to form a stable support state suitable for high-level operation of special vehicles.

[0074] Furthermore, steps S1, S2, and S3 are preferably performed sequentially. That is, first, the outward extension guidance of the lateral telescopic support is completed, then the restriction or locking of the final extension position is completed, and finally, the vertical support bears the load downward. The reason for adopting this sequence is that only after the lateral telescopic support has moved to the outside of the vehicle body and is in a stable outward extension state will the ground support position established by the vertical support be within the expanded support base distance range, thereby enabling the special vehicle to obtain a larger lateral support width and a more stable load transfer path during the lifting and approaching of the body.

[0075] After the high-level operation is completed, the vertical outrigger cylinder 502 first drives the ground support 600 to detach from the ground, and then the horizontal telescopic cylinder 501 drives the lateral telescopic support to retract into the vehicle body.

[0076] During the recovery process after high-level operations are completed, the vertical outrigger cylinder 502 first moves the vertical support upward, causing the ground support 600 to detach from the ground. At this point, the load on the special vehicle is gradually released from the ground support state. After the vertical support is completely off the ground, the horizontal telescopic cylinder 501 moves the lateral telescopic support along the original guide path back into the vehicle body, so that the front outrigger assembly 100 and the rear outrigger assembly 200 return to the retracted state close to the chassis. By adopting the sequence of lifting first and then retracting, the lateral telescopic support is prevented from being forcibly moved laterally while still bearing ground reaction force, thus ensuring that the recovery process corresponds to the deployment process and helping to maintain the movement stability of the front and rear outrigger assemblies under the constraints of their respective guide components.

[0077] Test case

[0078] To further illustrate the impact of the differentiated arrangement of the front outrigger assembly (using a split guide) and the rear outrigger assembly (using an integrated guide) on the chassis space utilization and high-position operation stability of special vehicles, this embodiment establishes an equivalent simulation model of the special vehicle in a high-position operation state and compares and verifies the scheme of this invention with different outrigger arrangement schemes.

[0079] In this embodiment, a typical working condition of the special vehicle in a high-level operation state is selected as the simulation condition. The total working weight of the special vehicle is assumed to be 90kN, and the equivalent center of gravity height of the vehicle after the onboard box is lifted is assumed to be 3.2m. Lateral disturbance force is applied at the equivalent center of gravity height position of the upper part of the vehicle body. The front outrigger assembly and the rear outrigger assembly are respectively arranged at intervals along the front-rear direction of the vehicle, and both left and right outriggers form a support with the ground in the working state. In the simulation, the chassis of the special vehicle is simplified as a rigid-flexible coupled load-bearing frame, and the lateral telescopic support, vertical support, lower outrigger horizontal tube and rear base slide tube are taken as the main load-bearing components. The contact between the ground support and the ground is simplified as a vertical elastic support.

[0080] The comparison schemes are set as follows: Scheme A is the existing non-extended scheme, that is, the vertical support legs are only grounded downwards near the chassis, and no lateral extension support is set.

[0081] Option B is a standard front and rear integrated expansion scheme, in which both the front and rear outriggers adopt a transversely continuous integrated guide component. Due to the space required for steering, hydraulic lines, electrical systems, and structural clearance in the front chassis, the length of the front integrated guide component is limited.

[0082] Option C is a front-part expansion scheme, in which the front outrigger assembly adopts a left-right split guide, and the rear outrigger assembly is not effectively expanded.

[0083] Option D is a rear-mounted integrated outward expansion scheme, in which the rear outrigger assembly adopts an integrated continuous guide, while the front outrigger assembly is not effectively expanded outward.

[0084] Option E is a split-type expansion scheme, where both the front and rear outrigger assemblies adopt a split-type guide system.

[0085] Scheme F is the scheme of the present invention, that is, the front outrigger assembly adopts a left and right split lower outrigger horizontal tube and an inner support plate, and the rear outrigger assembly adopts an integrated rear base slide tube and a fixed support part 201b.

[0086] Among them, the support base distance refers to the lateral distance between the centers of the grounding support parts on the left and right sides of the special vehicle; the equivalent support base distance is the average of the front support base distance and the rear support base distance. The chassis space utilization rate is calculated as the ratio of the space length in which the outrigger guide support components can be effectively arranged to the usable space length in the target installation area, and the results are shown in Table 1 below.

[0087] Table 1

[0088] As shown in Table 1, although Scheme A occupies less chassis space, its vertical outrigger grounding points are still located close to the chassis. The front support base distance, rear support base distance, and equivalent support base distance are all 1850mm, which cannot effectively improve the lateral anti-overturning capability of special vehicles in high-position operation. When Scheme B adopts a common front and rear integrated outward expansion structure, the rear area can accommodate an integrated lateral guide, but in the front area, due to the space required for steering, oil circuits, electrical systems, and structural clearance on the chassis, the continuous lateral guide needs to avoid the existing structure under the chassis. This results in an effective outward extension of only 350mm on one side at the front, a front support base distance of only 2550mm, and an equivalent support base distance of 2650mm. This indicates that simply designing both the front and rear outriggers as an integrated lateral guide structure cannot fully adapt to the complex chassis space at the front of special vehicles.

[0089] Option C is a front-segment split-type expansion design, with an effective single-side extension of 650mm and a front support base distance of 3150mm. This demonstrates that, given limited front chassis space, a left-right split-type lateral guide can effectively avoid obstructing the front chassis structure and improve the space utilization of the front area. However, because the rear outrigger assembly in Option C is not effectively expanded, the rear support base distance remains at 1850mm, resulting in an equivalent support base distance of only 2500mm, lower than Option B's 2650mm and significantly lower than Option F's 3200mm. Therefore, while split-type expansion of the front area can improve the front support position, it cannot create a coordinated front and rear integrated support system.

[0090] Option D is a rear-mounted integrated extension design, with an effective single-side extension of 700mm and a rear support base distance of 3250mm. This indicates that, given a relatively continuous installation space in the rear chassis, the integrated rear base slide tube can effectively utilize the rear space and create a larger rear support span. However, because the front outrigger assembly in Option D is not effectively extended, the front support base distance remains at 1850mm, resulting in an equivalent support base distance of only 2550mm, which is lower than the 2650mm of Option B and the 3200mm of Option F in this application. Therefore, while an integrated extension of the rear area can improve rear support capacity, the front support area remains limited, and the effective support base distance is insufficient for high-level vehicle operations.

[0091] Although Scheme E uses separate guides at both the front and rear, which can create a larger outward extension, its equivalent support base distance reaches 3125mm, which is higher than Scheme B, Scheme C and Scheme D; however, Scheme E also uses separate guides in the rear area, which does not make full use of the relatively continuous installation space of the rear chassis to form an overall guide reference. As a result, its rear support base distance is 3100mm, which is lower than the 3250mm of Scheme F in this application. Furthermore, the guide consistency and load distribution capacity between the left and right rear outriggers are not as good as the integrated rear base sliding tube structure.

[0092] In Scheme F of this application, the front adopts a split-type lower support leg cross tube, allowing the front support leg assembly to utilize the dispersed installation space on both sides of the front chassis, avoiding spatial interference between the integrated long cross tube and the front chassis structure; the rear adopts an integrated rear base slide tube, allowing the rear support leg assembly to utilize the relatively continuous installation space of the rear chassis to form a continuous lateral guide reference. Therefore, the chassis space utilization rate of this application scheme reaches 91.3%, and the equivalent support base distance reaches 3200mm. Compared with the existing non-extension scheme of Scheme A, the equivalent support base distance is increased by approximately 73.0%; compared with the ordinary front and rear integrated expansion scheme of Scheme B, the equivalent support base distance is increased by approximately 20.8%; compared with the front-only split expansion scheme of Scheme C, the equivalent support base distance is increased by approximately 28.0%; compared with the rear-only integrated expansion scheme of Scheme D, the equivalent support base distance is increased by approximately 25.5%; and compared with the front and rear equally split expansion scheme of Scheme E, the equivalent support base distance is increased by approximately 2.4%. The above results show that this application does not simply adopt a split or integrated outrigger guide, but rather combines a split front guide with an integrated rear guide based on the difference in installation space between the front and rear areas of the special vehicle chassis, thereby simultaneously improving the space utilization of complex chassis and the lateral support base distance in high-position operation.

[0093] Reference Figure 5 , Figure 5 The changes in equivalent support base distance for schemes A to F under high-level operation conditions are shown in bar chart form. Figure 5It can be seen that Scheme A has the smallest equivalent support base distance, indicating that the support points of the existing non-outward expansion schemes are still mainly located near the chassis. Although Schemes B, C and D have increased the support span by means of ordinary front and rear integrated outward expansion, front-only integrated outward expansion or rear-only integrated outward expansion, their equivalent support base distance is still lower than that of Scheme F in this application. Scheme E has obtained a larger support base distance by front and rear split outward expansion, but its rear has not formed an integrated continuous guide base, and its equivalent support base distance is still slightly lower than that of Scheme F in this application. Figure 5 The results further demonstrate that, through the combination of front-part guide and rear-part integrated guide, the front and rear support points can be transferred to the outside of the vehicle body more fully, thereby obtaining the maximum equivalent support base distance.

[0094] Furthermore, lateral disturbance forces of 4kN, 6kN, 8kN, 10kN, and 12kN were applied to each of the above schemes, with an application height of 3.2m for each. The roll angle of the special vehicle chassis in the high-position operation state was recorded. The simulation results are shown in Table 2 below.

[0095] Table 2

[0096] As shown in Table 2, with the gradual increase of lateral disturbance force, the roll angle of each scheme increases with the increase of lateral disturbance force, but the roll angle of Scheme F of the present invention is the smallest under all lateral disturbance forces. When the lateral disturbance force is 10kN, the roll angle of Scheme A is 1.099°, the roll angle of Scheme B is 0.472°, the roll angle of Scheme E is 0.321°, while the roll angle of Scheme F of the present invention is 0.275°. That is to say, under the same lateral disturbance force, the roll angle of the present invention is reduced by about 74.9% compared with the existing non-expansion scheme, by about 41.6% compared with the ordinary front and rear integrated expansion scheme, and by about 14.2% compared with the front and rear split expansion scheme.

[0097] The results show that the present invention does not improve stability simply by increasing the number of outriggers or by simply setting up a lateral expansion structure. Instead, it improves stability by using a split guide in the front space-constrained area and an integrated guide in the rear continuous space area. This allows the front and rear support points to move more fully to the outside of the vehicle body while maintaining the continuous guiding rigidity of the rear support system, thereby achieving a smaller tilt response in high-position operation.

[0098] Reference Figure 6 , Figure 6 The trend of roll angle variation for each scheme under different lateral disturbance forces is shown in line graph form. Figure 6It can be seen that as the lateral disturbance force increases from 4kN to 12kN, the roll angle of each scheme increases, indicating that the lateral overturning tendency of special vehicles in high-position operation state is enhanced when the lateral disturbance force increases. However, under the same lateral disturbance force, the roll angle of scheme F in this application is always smaller than that of schemes A, B, and E. Especially when the lateral disturbance force is 10kN and 12kN, the increase in roll angle of scheme F in this application is smaller, indicating that it can still maintain good attitude stability under large lateral disturbance conditions. This result further verifies that the differentiated arrangement of the front split guide and the rear integrated guide can improve the force coordination of the front and rear outrigger assemblies while increasing the lateral support base distance, thereby reducing the roll response of special vehicles in high-position operation state.

[0099] Under the condition of a lateral disturbance force of 10 kN, the equivalent support base distance, critical lateral overturning force, roll angle, maximum equivalent stress at the outrigger guide section, and maximum lateral displacement of the upper part of the vehicle body are further extracted for each scheme. The critical lateral overturning force is calculated based on the vehicle weight, equivalent center of gravity height, and equivalent support base distance, and the calculation formula is as follows: , in, The critical lateral overturning force, This refers to the equivalent weight of a special vehicle under operating conditions. For equivalent support base distance, This refers to the equivalent center of gravity height of the special vehicle in a high-position operation state. In this embodiment, Take 90kN, Take 3.2m. The calculated structure is shown in Table 3 below.

[0100] Table 3

[0101] As shown in Table 3, under a lateral disturbance force of 10 kN, the critical lateral overturning force of Scheme F of the present invention is 45.0 kN, and the overturning safety factor is 4.50, which is higher than that of Schemes A, B, C, D, and E. Meanwhile, the maximum equivalent stress at the outrigger guide section in Scheme F of the present invention is 132 MPa, which is approximately 45.2% lower than that of Scheme A, approximately 32.7% lower than that of Scheme B, and approximately 16.5% lower than that of Scheme E; the maximum lateral displacement of the upper part of the vehicle body is 13.8 mm, which is significantly reduced compared to Schemes A, B, and E.

[0102] The above results indicate that either a separate front outrigger extension or a separate integrated rear outrigger extension can only locally increase the support base distance, making it difficult to simultaneously ensure spatial adaptability of the front and rear support areas and overall support rigidity. While a front and rear split outrigger extension can create a larger support base distance, the rear area does not utilize continuous space to form an integrated guiding reference, resulting in inferior guiding consistency and load distribution capabilities between the left and right rear outriggers compared to the solution of this invention. The solution of this invention, through the combination of a separate front guide and an integrated rear guide, allows the front outriggers to avoid complex chassis space constraints, while the rear outriggers form a continuous guiding and integrated load-bearing foundation, thereby simultaneously improving chassis space utilization, lateral support base distance, and stability during high-level operations.

[0103] The comparison results above show that the proposed solution is not a simple lateral extension modification of a conventional outrigger structure. For special vehicles, when operating at height, the cargo box needs to be raised and brought into contact with the vehicle, increasing the vehicle's center of gravity. Furthermore, the available installation space, existing structural distribution, and stress requirements at the front and rear of the chassis are different. If only a standard integrated front and rear extension solution is used, the continuous front guide component is easily restricted by the structure below the chassis, making it difficult to obtain sufficient front extension. If only a split front extension or only a single rear extension is used, only the support span can be locally increased, failing to form a coordinated front and rear support system. If both the front and rear use split guides, the rear area does not fully utilize its continuous installation space to form an overall guide reference, and the rear support rigidity and the stress coordination between the left and right outriggers remain insufficient.

[0104] Based on the spatial conditions and stress characteristics of the front and rear areas of the special vehicle chassis, this application designs the front outrigger assembly as a split-type guide structure, with lateral restraint via an inner support plate to adapt to the complex front chassis space. The rear outrigger assembly is designed as an integrated continuous guide structure, supported on the chassis by a fixed support part 201b, forming a continuous rear guide reference and an overall load-bearing foundation. Thus, this application achieves both a large lateral support base distance and high guide support rigidity within a limited chassis space. Simulation results in Tables 1 to 3 show that the proposed solution outperforms conventional outrigger extension schemes and individual partial outrigger extension schemes in terms of chassis space utilization, equivalent support base distance, overturning safety factor, roll angle, maximum equivalent stress at the outrigger guide section, and maximum lateral displacement of the upper body. This indicates that the improved stability of this application stems from the differentiated and collaborative design of the front and rear outrigger guide, restraint, and support structures, rather than the conventional application of a simple lateral extension structure.

[0105] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise changed, and the nature or number or position of discrete elements may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. Therefore, the invention is not limited to the particular embodiments but extends to a variety of modifications that still fall within the scope of the appended claims.

[0106] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the currently considered best mode for carrying out the invention, or those features that are not relevant to implementing the invention) may be omitted.

[0107] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A stabilizing outrigger structure for a special vehicle, characterized in that: include, The front outrigger assembly (100) and the rear outrigger assembly (200) are mounted on the chassis of the special vehicle. The front outrigger assembly (100) includes a first lateral telescopic support (101) and a first vertical support (102), and the rear outrigger assembly (200) includes a second lateral telescopic support (201) and a second vertical support (202). The front outrigger assembly (100) further includes a first lateral guide (101a) for guiding the first lateral telescopic support (101) to extend and retract laterally, and a first limiting part (101b) for limiting the lateral displacement of the first lateral telescopic support (101). The rear outrigger assembly (200) further includes a second lateral guide (201a) for guiding the second lateral telescopic support (201) to extend laterally, and a fixed support (201b) for fixing the second lateral guide to the chassis. The first vertical support (102) and the second vertical support (202) are both located at the outer support position of the corresponding horizontal telescopic support; The first lateral guide (101a) is a lower support leg tube arranged laterally along the vehicle, and the first lateral telescopic support (101) is slidably engaged with the lower support leg tube. The first limiting part (101b) adopts an inner support plate located near the inside of the vehicle body. The inner support plate is disposed opposite to the inner part of the first lateral telescopic support part (101) and forms a lateral limiting cooperation with the first lateral telescopic support part (101). The second lateral guide (201a) is a rear base slide tube arranged laterally along the vehicle, and the second lateral telescopic support (201) is slidably engaged with the rear base slide tube; The fixed support part (201b) is disposed between the rear base slide tube and the special vehicle chassis, and is connected to the rear base slide tube to position and support the rear base slide tube on the special vehicle chassis. The first lateral guide (101a) includes two first guides respectively disposed on the left and right sides of the vehicle body, and the two first guides are slidably engaged with the first lateral telescopic support (101) on the corresponding side; The second lateral guide (201a) is a second guide that extends continuously along the lateral side of the vehicle, and the second guide is slidably engaged with the second lateral telescopic support (201) on the left and right sides of the vehicle body, respectively; The fixed support (201b) is connected between the second guide and the special vehicle chassis.

2. The stabilizing outrigger structure for special vehicles according to claim 1, characterized in that: At least one of the guide engagement portions between the first lateral guide (101a) and the first lateral telescopic support (101), and between the second lateral guide (201a) and the second lateral telescopic support (201), is provided with a wear-resistant plate (300). The wear-resistant plate (300) is located between the corresponding transverse guide and the corresponding transverse telescopic support, and forms a sliding contact with the corresponding transverse telescopic support to withstand the sliding friction between the corresponding transverse guide and the corresponding transverse telescopic support.

3. The stabilizing outrigger structure for special vehicles according to claim 1 or 2, characterized in that: It also includes a locking and limiting structure (400), which is disposed at the mating position of the corresponding transverse telescopic support and the corresponding transverse guide at the end of the outward stroke; The locking and limiting structure (400) includes a limiting member disposed on one of the corresponding transverse guide member and the corresponding transverse telescopic support member, and a stop portion disposed on the other. When the corresponding lateral telescopic support extends to the predetermined extension position, the stop and the limiting member abut against each other in the extension direction to restrict the corresponding lateral telescopic support from continuing to extend.

4. The stabilizing outrigger structure for special vehicles according to claim 3, characterized in that: The locking and limiting structure (400) further includes a locking member, which is disposed at the corresponding position of the limiting member and the stop portion; When the stop part abuts against the limiting member in the outward extension direction, the locking member forms a locking engagement with the limiting member and the stop part to restrict the movement of the corresponding lateral telescopic support part relative to the corresponding lateral guide member in the retraction direction.

5. The stabilizing outrigger structure for special vehicles according to claim 1 or 4, characterized in that: It also includes a hydraulic assembly (500) respectively disposed in the front outrigger assembly (100) and the rear outrigger assembly (200), the hydraulic assembly (500) including a horizontal telescopic cylinder (501) and a vertical outrigger cylinder (502); The horizontal telescopic cylinder (501) is driven to connect with the corresponding horizontal telescopic support, and the vertical support cylinder (502) is driven to connect with the corresponding vertical support. The horizontal telescopic cylinder (501) is connected to the first hydraulic circuit, and the vertical outrigger cylinder (502) is connected to the second hydraulic circuit, which is independent of the first hydraulic circuit.

6. The stabilizing outrigger structure for special vehicles according to claim 5, characterized in that: The lower ends of the first vertical support (102) and the second vertical support (202) are both connected to grounding support (600). The grounding support (600) is located at the lowest bearing end of the corresponding vertical support, and the outer dimension of the grounding support (600) in the top view direction is greater than the outer dimension of the connecting part at the lower end of the corresponding vertical support.

7. The stabilizing outrigger structure for special vehicles according to claim 1, characterized in that: The front outrigger assembly (100) and the rear outrigger assembly (200) are spaced apart along the front-rear direction of the vehicle; The first lateral telescopic support (101) includes left and right first lateral telescopic support members that extend and retract to the left and right sides of the vehicle body respectively, and the first vertical support (102) includes left and right first vertical support members that are respectively disposed at the outer support positions of the left and right first lateral telescopic support members; The second lateral telescopic support (201) includes left and right second lateral telescopic support members that extend and retract to the left and right sides of the vehicle body, respectively. The second vertical support (202) includes left and right second vertical support members that are respectively provided at the outer support positions of the left and right second lateral telescopic support members.

8. A method for stabilizing and supporting special vehicles in high-position operations, applied to the stabilizing outrigger structure of the special vehicle as described in any one of claims 1 to 7, characterized in that: include, The horizontal telescopic cylinder (501) drives the lateral telescopic support parts in the front outrigger assembly (100) and the rear outrigger assembly (200) to extend to both sides of the vehicle body. After the lateral telescopic support extends into place, the position of the lateral telescopic support is restricted by the locking and limiting structure (400); The vertical support is driven downward by the vertical outrigger cylinder (502) so that the ground support (600) contacts the ground and transfers the weight of the special vehicle to the ground.

9. The method for stabilizing and supporting special vehicles in high-position operations according to claim 8, characterized in that: The first lateral guide (101a) in the front outrigger assembly (100) is a lower outrigger horizontal tube, the first limiting part (101b) is an inner support plate, and the lateral telescopic support part in the front outrigger assembly (100) extends and retracts along the lower outrigger horizontal tube and is laterally limited and supported by the inner support plate. The second lateral guide (201a) in the rear outrigger assembly (200) adopts a rear base slide tube. The lateral telescopic support in the rear outrigger assembly (200) extends and retracts along the rear base slide tube, and the fixed support (201b) positions and supports the rear base slide tube.

10. The method for stabilizing and supporting special vehicles in high-position operations according to claim 9, characterized in that: After the high-level operation is completed, the ground support part (600) is first lifted off the ground by the vertical outrigger cylinder (502), and then the horizontal telescopic support part is retracted into the vehicle body by the horizontal telescopic cylinder (501).

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