Landing leg stabilizing device and engineering machinery

Abstract

The invention provides a supporting leg stabilizing device and engineering machinery, the supporting leg stabilizing device comprises a first supporting leg arm and a second supporting leg arm, the first supporting leg arm is hinged to a supporting leg box, the first supporting leg arm is a hollow cylinder, and the second supporting leg arm is arranged in the first supporting leg arm in a penetrating mode; and the driving mechanism is connected with the supporting leg mechanism, the first supporting leg arm is used for rotating between a folding position and an unfolding position relative to the supporting leg box under the driving of the driving mechanism, and the second supporting leg arm is used for performing telescopic movement relative to the first supporting leg arm under the driving of the driving mechanism. According to the double-arm supporting leg telescopic structure, the supporting leg box is hinged to the first supporting leg arm, the first supporting leg arm is in sliding connection with the second supporting leg arm, and the maximum stretching distance and compact storage are achieved; the first supporting leg arm and the second supporting leg arm share one driving mechanism, the second supporting leg arm can be reset without power driving in the folding process, and energy consumption and driving cost of the supporting leg stabilizing device can be saved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of engineering machinery, and particularly relates to a support leg stabilizer and engineering machinery. BACKGROUND

[0002] High-altitude operation platforms, forklifts (such as rotary telescopic arm forklifts) and excavators and other engineering machinery usually need support leg stabilizers to support due to stability requirements. There are two kinds of traditional support leg stabilizers. The first kind is a single-arm support leg structure. When retracted, the single-arm support leg is vertically hung. When unfolded, the single-arm support leg is horizontally extended. The second kind is a multi-stage telescopic support leg. The support leg is unfolded by telescopic control. The support leg needs to be lifted by an additional lifting structure to lift the vehicle after touching the ground.

[0003] Among them, the single-arm support leg structure has a short length, a small span after unfolding, and insufficient stability, which affects the safety of high-altitude operation. When retracted, the single-arm support leg is vertically hung, and the support leg stabilizer extends into the rotary table working area, which hinders the rotation of the rotary table. The multi-stage telescopic support leg has a long width after retraction, occupies space in the width direction, and needs to use two or more driving components in sequence for the additional lifting structure to unfold, which takes a long time to unfold and has high energy consumption. SUMMARY

[0004] The main purpose of the present application is to provide a support leg stabilizer and engineering machinery, which aims to solve the technical problems of small unfolding span and high energy consumption of the support leg stabilizer in the prior art.

[0005] In order to achieve the above-mentioned purpose, the present application provides a support leg stabilizer, which comprises: a support leg box; a support leg mechanism comprising a support leg first arm and a support leg second arm, the support leg first arm is hinged to the support leg box, the support leg first arm is a hollow cylinder, and the support leg second arm is arranged in the support leg first arm; a driving mechanism connected to the support leg mechanism, the support leg first arm is used to rotate relative to the support leg box between a folded position and an unfolded position under the driving of the driving mechanism, and the support leg second arm is used to perform telescopic motion relative to the support leg first arm under the driving of the driving mechanism.

[0006] In the embodiment of the present application, the driving mechanism comprises: a rotary driving member connected to the support leg first arm and used to drive the support leg first arm to rotate relative to the support leg box; a linkage assembly, the support leg first arm and the support leg second arm are connected to the linkage assembly, and the linkage assembly is used to synchronously drive the support leg second arm to perform telescopic motion relative to the support leg first arm under the rotary driving of the support leg first arm.

[0007] In the embodiment of the present application, the linkage assembly comprises a traction member, one end of which is fixed to the support leg box and the other end of which is connected to the support leg second arm, the support leg first arm is connected to the support leg second arm through the traction member and is used to drive the support leg second arm to extend or retract through the traction member; and an elastic member, which is accommodated in the support leg first arm and has two ends connected to the support leg first arm and the support leg second arm respectively.

[0008] In the embodiment of the present application, one end of the rotary drive member is hinged to a first hinge point of the support leg box, and the other end of the rotary drive member is hinged to a second hinge point of the support leg first arm through a hinge member, and the hinge member is provided with a guide groove for guiding the traction member.

[0009] In the embodiment of the present application, a plumb line at the second hinge point of the folding device is L1, a perpendicular bisector of a line connecting the second hinge point in the folded position and the second hinge point in the unfolded position is L2, one end of the traction member is fixed to a first fixed point of the support leg box, and the first fixed point is located in a sector formed by L1 and L2.

[0010] In the embodiment of the present application, a reversing member is further arranged on the support leg first arm, the reversing member can guide and reverse the traction member, and the reversing member is located on a side of the support leg first arm away from the support leg box, so that the other end of the traction member is fixed to a second fixed point of the support leg second arm close to one end of the support leg first arm.

[0011] In the embodiment of the present application, an end of the support leg first arm is hinged to a third hinge point of the support leg box, and the third hinge point is located at an end of the support leg box along a box width direction of the support leg box.

[0012] In the embodiment of the present application, one end of the elastic member is connected to a first mounting point of the support leg first arm, and the other end of the elastic member is connected to a second mounting point of the support leg second arm, the first mounting point is located between the third hinge point and the second hinge point, and the second mounting point is located at one end of the support leg second arm close to the second fixed point.

[0013] In the embodiment of the present application, the rotary drive member is a drive oil cylinder, an electric push rod or a gas pressure drive structure.

[0014] The present application further provides an engineering machine, which comprises a vehicle body and the support leg stabilizing device as described above, and the support leg box is mounted to a bottom of the vehicle body.

[0015] Through the above technical solution, the support leg stabilizing device provided by the embodiment of the present application has the following beneficial effects: In need of unfolding the outrigger mechanism of the outrigger stabilizer, the outrigger one-arm can be driven to rotate downward around the outrigger box by the driving mechanism, and in the process of unfolding the outrigger one-arm, the outrigger one-arm can drive the outrigger two-arm to extend relative to the outrigger one-arm, so that the outrigger one-arm and the outrigger two-arm are synchronously unfolded, the outrigger one-arm is used as the driving component of the outrigger two-arm, the energy consumption of the driving mechanism can be saved, or the outrigger two-arm is synchronously driven to extend relative to the outrigger one-arm by the driving mechanism, so that the outrigger one-arm and the outrigger two-arm are synchronously unfolded, the unfolding time length of the outrigger mechanism is saved, the unfolding efficiency of the outrigger mechanism is improved, until the driving mechanism moves to the maximum stroke, the end of the outrigger two-arm away from the outrigger box supports the ground and lifts the engineering machinery, the outrigger mechanism is unfolded to the maximum distance, in need of folding the outrigger mechanism of the outrigger stabilizer, the outrigger one-arm can be driven to rotate upward around the outrigger box by the driving mechanism, the outrigger two-arm is retracted relative to the outrigger one-arm under the action of its gravity and the tension of the elastic element, after the driving mechanism is completely reset, the outrigger one-arm is folded to the initial position relative to the outrigger box, the outrigger two-arm returns to the initial position, the outrigger mechanism is in the folded state, and the outrigger two-arm is at least partially accommodated in the outrigger one-arm. The vertical space occupied after the outrigger is retracted can be reduced, the outrigger two-arm overlaps the outrigger one-arm during retraction, and meanwhile, the outrigger mechanism can avoid interfering with other components, so that the engineering machinery can be flexibly operated in the state that the outrigger is not unfolded. The outrigger mechanism shares one driving component, and the self-gravity of the outrigger two-arm can be utilized during the folding process, so that the energy consumption is reduced and no additional driving component is needed. The double-arm outrigger telescopic structure in the application is hinged with the outrigger box and the outrigger one-arm and is slidingly connected with the outrigger one-arm and the outrigger two-arm, so that the maximum extension distance and the compact storage are realized; the outrigger one-arm and the outrigger two-arm share one driving mechanism, and the outrigger two-arm can be reset without power driving during the folding process, so that the energy consumption and the driving cost of the outrigger stabilizer are saved.

[0016] Other features and advantages of the present application will be described in detail in the following detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings are included to provide an understanding of the application, and are incorporated in and constitute a part of the specification, illustrate embodiments of the application, and, together with the detailed description, serve to explain the principles of the application. In the drawings: Figure 1 is a structural schematic view of the outrigger stabilizer in one view according to an embodiment of the application; Figure 2 is a structural schematic view of the outrigger stabilizer in another view according to an embodiment of the application; Figure 3 is a structural schematic view of the outrigger stabilizer in another view according to an embodiment of the application; Figure 4 is a schematic view of the outrigger stabilizer in different states of various connection points according to an embodiment of the application.

[0018] Explanation of reference numerals in the attached figures Detailed Implementation

[0019] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0020] The outrigger stabilization device according to the present invention is described below with reference to the accompanying drawings.

[0021] like Figures 1 to 4 As shown, in an embodiment of the present invention, the outrigger stabilizing device 100 includes an outrigger box 1, an outrigger mechanism 2, and a drive mechanism 3. The outrigger mechanism 2 includes a first outrigger arm 21 and a second outrigger arm 22. The first outrigger arm 21 is hinged to the outrigger box 1 and is a hollow cylinder. The second outrigger arm 22 passes through the first outrigger arm 21 and slides in contact with it. The drive mechanism 3 is connected to the outrigger mechanism 2. The first outrigger arm 21 is used to rotate relative to the outrigger box 1 between a folded position and an unfolded position under the drive of the drive mechanism 3. The second outrigger arm 22 is used to extend and retract relative to the first outrigger arm 21 under the drive of the drive mechanism 3.

[0022] Understandably, in this embodiment, the outrigger stabilization device 100 is mainly used for aerial work platforms, forklifts (such as rotary telescopic boom forklifts), or excavators and other construction machinery. The outrigger box 1 can be installed on the bottom of the construction machinery. In one embodiment, the outrigger box 1 has a symmetrical box-shaped structure, with a main body 14 in the middle. Inverted V-shaped side branches 15 extend from the left and right sides of the main body 14. The width of the outrigger box 1 can be... Figure 3 The left and right directions can also refer to the width direction of the construction machinery. Each of the two branches 15 of the outrigger box 1 is equipped with an outrigger mechanism 2. The number of drive mechanisms 3 and outrigger mechanisms 2 are the same and they are arranged in a one-to-one correspondence. Specifically, the first outrigger arm 21 can be hinged to the branch 15 via a pin, and the second outrigger arm 22 can slide and engage with the first outrigger arm 21 via a slider. Multiple sets of sliding contact groups are provided at the end of the second outrigger arm 22 near the outrigger box 1. These sliding contact groups are arranged sequentially along the arm length direction of the second outrigger arm 22. Each sliding contact group includes multiple sliders, which are spaced apart along the outer periphery of the second outrigger arm 22. The sliders can be made of flexible material; in one embodiment, the sliders are made of rubber or nylon, allowing the second outrigger arm 22 to return to its original position under its own weight and the tension of the elastic element 322 during folding. It should be noted that the length ratio of the first outrigger arm 21 and the second outrigger arm 22 can be adjusted according to the needs of different vehicle models (e.g., the length of the second outrigger arm 22 is greater than or equal to the length of the first outrigger arm 21) to suit the needs of different vehicle models.

[0023] When the outrigger mechanism 2 of the outrigger stabilizer 100 needs to be unfolded, the outrigger one-arm 21 can be driven by the driving mechanism 3 to rotate downward around the outrigger box 1. During the unfolding of the outrigger one-arm 21, the outrigger one-arm 21 can drive the outrigger two-arm 22 to extend relative to the outrigger one-arm 21, so that the outrigger one-arm 21 and the outrigger two-arm 22 are synchronously unfolded. By taking the outrigger one-arm 21 as the driving component of the outrigger two-arm 22, the energy consumption of the driving mechanism 3 can be saved. Alternatively, the outrigger two-arm 22 can be synchronously driven by the driving mechanism 3 to extend relative to the outrigger one-arm 21, so that the outrigger one-arm 21 and the outrigger two-arm 22 are synchronously unfolded. The unfolding time of the outrigger mechanism 2 is saved, the unfolding efficiency of the outrigger mechanism 2 is improved, and the driving mechanism 3 moves to the maximum stroke. The end of the outrigger two-arm 22 away from the outrigger box 1 supports the ground and lifts the engineering machinery, and the outrigger mechanism 2 is unfolded to the maximum distance. When the outrigger mechanism 2 of the outrigger stabilizer 100 needs to be folded, the outrigger one-arm 21 can be driven by the driving mechanism 3 to rotate upward around the outrigger box 1. The outrigger two-arm 22 can retract relative to the outrigger one-arm 21 under the action of its own gravity and the tension of the elastic member 322. After the driving mechanism 3 is completely reset, the outrigger one-arm 21 is folded to the initial position relative to the outrigger box 1, the outrigger two-arm 22 returns to the initial position, and the outrigger mechanism 2 is in a folded state. The outrigger two-arm 22 is at least partially accommodated in the outrigger one-arm 21. The vertical space occupied after the outrigger is retracted can be reduced. The outrigger two-arm 22 overlaps the outrigger one-arm 21 during retraction, which can avoid the interference of the outrigger mechanism 2 with other components and allow the engineering machinery to be flexibly operated in the state that the outrigger is not unfolded. The outrigger mechanism 2 shares a driving component, and the self-gravity of the outrigger two-arm 22 can be utilized during the folding process, which can reduce energy consumption and does not require additional driving components. The double-arm outrigger structure in the embodiment realizes the maximum extension distance and compact storage through the hinging of the outrigger box 1 and the outrigger one-arm 21 and the sliding connection of the outrigger one-arm 21 and the outrigger two-arm 22. The outrigger one-arm 21 and the outrigger two-arm 22 share one driving mechanism 3, and the outrigger two-arm 22 can be reset without power driving during the folding process, which can save the energy consumption and driving cost of the outrigger stabilizer 100.

[0024] The outrigger mechanism 2 further includes a support leg 23 hinged to one end of the outrigger two-arm 22 away from the outrigger one-arm 21. The support leg 23 is provided with a support plane for supporting the ground. The support leg 23 can adopt a triangular support structure. The top of the support leg 23 can be hinged to the fourth hinge point 222 at the bottom of the outrigger two-arm 22 through a pin shaft. The support leg 23 automatically rotates to be horizontal when it touches the ground, which is suitable for inclined terrain. The self-adaptive design of the support leg 23 can realize automatic leveling of the support leg 23, so that the outrigger stabilizer 100 is self-adaptive to complex terrain.

[0025] In an embodiment, the driving mechanism 3 comprises a rotating driving member 31 and a linkage assembly 32. The rotating driving member 31 is connected to the first leg arm 21 and is used to drive the first leg arm 21 to rotate relative to the leg box 1. The linkage assembly 32 is connected to both the first leg arm 21 and the second leg arm 22. The linkage assembly 32 is used to drive the second leg arm 22 to extend and retract relative to the first leg arm 21 synchronously under the driving of the first leg arm 21. The rotating driving member 31 in this embodiment can be a driving oil cylinder, an electric push rod or a gas pressure driving structure, which is simple in structure and convenient to assemble. In this embodiment, the first leg arm 21 can drive the second leg arm 22 to extend and retract through the linkage assembly 32 during the unfolding or folding process. When the leg stabilizing device 100 needs to be unfolded, the rotating driving member 31 drives the first leg arm 21 to rotate downward relative to the leg box 1. The first leg arm 21 can drive the second leg arm 22 to extend relative to the first leg arm 21 through the linkage assembly 32. When the leg stabilizing device 100 needs to be folded, the rotating driving member 31 drives the first leg arm 21 to rotate upward relative to the leg box 1. The first leg arm 21 can drive the second leg arm 22 to retract relative to the first leg arm 21 through the linkage assembly 32. At the same time, the second leg arm 22 retracts into the first leg arm 21 under the action of its own gravity and the tension of the elastic member 322. In this embodiment, the linkage design of the first leg arm 21 and the second leg arm 22 only needs to drive the first leg arm 21 through the rotating driving member 31, and coordinates the movement of the two arms through the linkage assembly 32, which ensures the automation of the unfolding / folding of the leg mechanism 2, realizes the efficient switching of the retracted / extended state, improves the unfolding / folding efficiency, and saves the driving cost and energy consumption of the leg stabilizing device 100.

[0026] It should be noted that the linkage assembly 32 comprises a traction member 321 and an elastic member 322. One end of the traction member 321 is fixed to the leg box 1, and the other end is connected to the second leg arm 22. The first leg arm 21 is connected to the second leg arm 22 through the traction member 321 and is used to drive the second leg arm 22 to extend and retract through the traction member 321. The elastic member 322 is accommodated in the first leg arm 21, and both ends of the elastic member 322 are connected to the first leg arm 21 and the second leg arm 22, respectively. The elastic member 322 in this embodiment can be a spring. The traction member 321 can be a steel wire rope or a high-strength chain. The leg box 1 and the second leg arm 22 can be provided with a fixed seat for fixing the traction member 321.

[0027] During the deployment of the outriggers, the rotation drive 31 pushes the outrigger arm 21 to rotate downwards around the outrigger box 1. This increases the distance between the fixing seat on the outrigger box 1 that secures the traction member 321 and the connection point on the outrigger arm 21 that secures the traction member 321, causing the traction member 321 to tension. The traction member 321 then passes around the connection point of the outrigger arm 21, pulling the second outrigger arm 22 out of the outrigger arm 21. The elastic member 322 stretches, and its tension ensures that the second outrigger arm 22 does not detach from the first outrigger arm 21. The rotation drive 31... 1. Continue to push the outrigger arm 21 downward to rotate around the outrigger box 1. The support foot 23 touches the ground and lifts the construction machinery. After the rotation drive 31 reaches the end of its stroke, the outrigger mechanism 2 extends to its longest distance. During the outrigger folding process of the outrigger stabilizing device 100, the rotation drive 31 pulls the outrigger arm 21 upward to rotate around the outrigger box 1. The traction member 321 begins to relax. The outrigger arm 22 retracts under its own weight and the tension of the elastic member 322. After the rotation drive 31 is fully retracted, the outrigger arm 21 and the outrigger arm 22 return to their initial positions.

[0028] Specifically, one end of the rotary drive component 31 is hinged to the first hinge point 12 of the outrigger box 1, and the other end is hinged to the second hinge point 212 of the outrigger arm 21 via a hinge member 211. The hinge member 211 is provided with a guide groove for guiding the traction component 321. The guide groove can guide the traction component 321. When the rotary drive component 31 is a drive cylinder, the guide groove can be set in the cylinder seat bushing, which is simple in structure and can facilitate the driving of the outrigger arm 21 to the outrigger arm 22.

[0029] like Figure 4 As shown, in one embodiment, the vertical line at the second hinge point 212 of the folding device is L1, and the perpendicular bisector of the line connecting the second hinge point 212 in the folded position and the second hinge point 212 in the unfolded position is L2. One end of the traction member 321 is fixed to the first fixing point 11 of the support leg box 1, and the first fixing point 11 is located within the fan-shaped area formed by L1 and L2. Figure 4 The diagram shows the connection points of the outrigger mechanism 2 located on the right side of the outrigger box 1. The first fixing point 11 is located to the right of the vertical line L1, which can ensure that the traction member 321 is always in coordination with the guide groove, thus preventing the traction member 321 from disengaging from the guide groove. At the same time, the first fixing point 11 is located to the left of the vertical bisector L2 of the line connecting the second hinge point 212 in the folded position and the second hinge point 212 in the unfolded position, which can ensure that the two arms 22 of the outrigger can extend smoothly.

[0030] In one embodiment, the maximum extension stroke of the outrigger arm 22 is L, the line connecting the first fixed point 11 and the third hinge point 13 in the folded state is L3, and the line connecting the first fixed point 11 and the third hinge point 13 in the unfolded state is L4, L=L4-L3, and the third hinge point 13 in the folded state is located below the line connecting the first hinge point 12 and the fourth hinge point 222 to avoid structural dead points and the situation where the drive cylinder cannot be extended.

[0031] Specifically, a reversing component 213 is also provided on the outrigger arm 21. The reversing component 213 can guide and reverse the traction component 321. The reversing component 213 is located on the side of the outrigger arm 21 away from the outrigger housing 1, so that the other end of the traction component 321 is fixed to a second fixing point on the outrigger arm 22 near the end of the outrigger arm 21. In one embodiment, the reversing component 213 is a fixed pulley. In another embodiment, the reversing component 213 is a low-friction cylindrical roller, and the cylindrical roller is provided with an anti-derailment structure, which can equally guide the sliding of the traction component 321 and reduce costs. In this embodiment, the reversing component 213 is located on the outrigger arm 21 at the end away from the outrigger housing 1, and can guide and reverse the traction component 321, so that the traction component 321 can connect to the end of the outrigger arm 22 near the outrigger housing 1. This allows the outrigger arm 22 to have a large linkage stroke during linkage, and the outrigger stabilizing device 100 has a large unfolding span.

[0032] like Figures 1 to 3 As shown, the end of the outrigger arm 21 is hinged to the third hinge point 13 of the outrigger box 1. The third hinge point 13 is located at the end of the outrigger box 1 along the width direction of the box. In this embodiment, the third hinge point 13 is located at the end of the outrigger box 1, which ensures that the outrigger arm 21 has a large unfolding span relative to the outrigger box 1 in the unfolded state.

[0033] It should be noted that one end of the elastic element 322 is connected to the first mounting point 214 of the first arm 21 of the outrigger, and the other end is connected to the second mounting point 221 of the second arm 22 of the outrigger. The first mounting point 214 is located between the third hinge point 13 and the second hinge point 212, and the second mounting point 221 is located on the second arm 22 of the outrigger near the second fixed point. In this embodiment, the first mounting point 214, located between the third hinge point 13 and the second hinge point 212, can prevent the elastic element 322 from interfering with the unfolding / folding of the outrigger mechanism 2. The second mounting point 221, located on the second arm 22 of the outrigger near the second fixed point, can ensure that the elastic element 322 is always located inside the first arm 21 of the outrigger, preventing the elastic element 322 from being exposed and interfered with by other components, and can protect the elastic element 322. It should be noted that the number of traction elements 321 can be set according to actual usage requirements, such as... Figures 1 to 3As shown, in the embodiment, the number of traction members 321 is two, and the two traction members 321 are sequentially arranged along the thickness direction of the outrigger mechanism 2, and can simultaneously play a linkage role, thereby ensuring the linkage stability between the first outrigger arm 21 and the second outrigger arm 22.

[0034] Specifically, the rotary driving member 31 pushes the first outrigger arm 21 to rotate downward around the outrigger box 1, the distance between the fixed seat on the outrigger box 1 for fixing the traction member 321 and the guide groove on the first outrigger arm 21 is increased, and the traction member 321 is tensioned; the traction member 321 passes around the guide groove on the first outrigger arm 21 and the reversing member 213, and the second outrigger arm 22 is extended, and the elongation L of the second outrigger arm 22 is equal to the distance elongation between the first fixed point 11 on the outrigger box 1 and the guide groove, at this time, the elastic member 322 is stretched, and the tension of the elastic member 322 ensures that the second outrigger arm 22 will not be pulled out; the rotary driving member 31 continues to push the first outrigger arm 21 to rotate downward around the outrigger box 1, the supporting leg 23 touches the ground and lifts the vehicle, and after the rotary driving member 31 travels to the bottom, the outrigger mechanism 2 is unfolded to the longest distance, at this time, the elongation of the second outrigger arm 22 is the difference L4-L3 between the final distance L4 and the initial distance L3 between the first fixed point 11 on the outrigger box 1 and the guide groove. Outrigger folding: the rotary driving member 31 pulls the first outrigger arm 21 to rotate upward around the outrigger box 1, and the traction member 321 begins to relax; the second outrigger arm 22 is retracted under the action of its own gravity and the tension of the elastic member 322, and after the rotary driving member 31 is completely retracted, the first outrigger arm 21 and the second outrigger arm 22 return to the initial position.

[0035] The application also provides an engineering machine, which comprises a vehicle body and the outrigger stabilizing device 100 described above, and the outrigger box 1 is installed at the bottom of the vehicle body. The specific structure of the outrigger stabilizing device 100 is referred to the above-mentioned embodiments. Since the engineering machine adopts all the technical solutions of the above-mentioned embodiments, it has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here. In an embodiment, the engineering machine can be applied to a high-altitude operation platform, a forklift (such as a rotary telescopic arm forklift) or an excavator, etc.

[0036] Specifically, the engineering machine comprises two outrigger stabilizing devices 100, which are arranged on the vehicle body along the vehicle length direction of the vehicle body, and when the engineering machine needs to be supported, the two outrigger stabilizing devices 100 are unfolded together, the support span of the outrigger stabilizing device 100 is increased, and after the two-arm outrigger is unfolded, a wider support quadrilateral (the area is increased by about 30%) is formed, thereby significantly enhancing the stability.

[0037] In the description of the application, it is necessary to understand that the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first", "second" can be explicitly or implicitly included at least one of the features. In the description of the application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly specified.

[0038] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and other terms should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or communicate with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0039] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms is not necessarily for the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of the different embodiments or examples without contradiction.

[0040] Although the embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and cannot be understood as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A stabilizer for a support leg, characterized in that The support leg stabilizing device (100) comprises: a support leg box (1); a support leg mechanism (2) comprising a support leg first arm (21) and a support leg second arm (22), the support leg first arm (21) being hinged to the support leg box (1), the support leg first arm (21) being a hollow cylinder, the support leg second arm (22) being arranged in the support leg first arm (21); a driving mechanism (3) connected to the support leg mechanism (2), the support leg first arm (21) being arranged to rotate relative to the support leg box (1) under the driving of the driving mechanism (3) between a folded position and an unfolded position, the support leg second arm (22) being arranged to perform telescopic movement relative to the support leg first arm (21) under the driving of the driving mechanism (3).

2. The leg stabilizing device of claim 1, wherein, The driving mechanism (3) comprises: a rotating driving member (31) connected to the support leg first arm (21) and arranged to drive the support leg first arm (21) to rotate relative to the support leg box (1); a linkage assembly (32) connected to the support leg first arm (21) and the support leg second arm (22), the linkage assembly (32) being arranged to drive the support leg second arm (22) to perform telescopic movement relative to the support leg first arm (21) synchronously under the rotating driving of the support leg first arm (21).

3. The leg stabilizing device of claim 2, wherein, The linkage assembly (32) comprises: a traction member (321) having one end fixed to the support leg box (1) and the other end connected to the support leg second arm (22), the support leg first arm (21) being connected to the support leg second arm (22) through the traction member (321) and arranged to drive the support leg second arm (22) to perform telescopic movement through the traction member (321); a resilient member (322) accommodated in the support leg first arm (21) and having two ends connected to the support leg first arm (21) and the support leg second arm (22) respectively.

4. The leg stabilizing device of claim 3, wherein, One end of the rotating driving member (31) is hinged to a first hinge point (12) of the support leg box (1), the other end is hinged to a second hinge point (212) of the support leg first arm (21) through a hinge member (211), the hinge member (211) is provided with a guide groove for guiding the traction member (321).

5. The leg stabilizing device of claim 4, wherein, A plumb line at the second hinge point (212) in the folded position is L1, a perpendicular bisector of a line connecting the second hinge point (212) in the folded position and the second hinge point (212) in the unfolded position is L2, one end of the traction member (321) is fixed to a first fixed point (11) of the support leg box (1), the first fixed point (11) is located in a sector region formed by L1 and L2.

6. The leg stabilizing device of claim 4, wherein, The support leg first arm (21) is further provided with a reversing member (213) for guiding and reversing the traction member (321), the reversing member (213) is located on a side of the support leg first arm (21) away from the support leg box (1), and the other end of the traction member (321) is fixed to a second fixed point of the support leg second arm (22) close to one end of the support leg first arm (21).

7. The leg stabilizing device of claim 6, wherein, The end of the first leg arm (21) is hinged to a third hinge point (13) of the outrigger box (1), and the third hinge point (13) is located at the end of the outrigger box (1) along the box width direction of the outrigger box (1).

8. The leg stabilizing device of claim 7, wherein One end of the elastic member (322) is connected to a first mounting point (214) of the first leg arm (21), and the other end is connected to a second mounting point (221) of the second leg arm (22), the first mounting point (214) is located between the third hinge point (13) and the second hinge point (212), and the second mounting point (221) is located at one end of the second leg arm (22) close to the second fixed point.

9. A leg stabilisation device according to any one of claims 2 to 6, wherein, The rotary drive member (31) is a driving oil cylinder, an electric push rod or a gas pressure driving structure.

10. A working machine, characterized in that The engineering machine comprises a vehicle body and the outrigger stabilizing device (100) according to any one of claims 1 to 9, and the outrigger box (1) is mounted at the bottom of the vehicle body.

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