Outrigger stabilization devices and construction machinery

Abstract

This utility model provides a leg stabilizing device and engineering machinery, including a first leg arm and a second leg arm. The first leg arm is hinged to a leg housing and is a hollow cylinder. The second leg arm passes through the first leg arm and slides in contact with it. A support foot with ground support is hinged to the end of the second leg arm away from the leg housing. A drive mechanism is connected to the leg mechanism. The first leg arm rotates relative to the leg housing between a folded position and an unfolded position under the drive mechanism. The second leg arm extends and retracts relative to the first leg arm under the drive mechanism. This utility model's double-arm leg extension structure achieves maximum extension distance and compact storage through the hinged connection between the leg housing and the first leg arm, and the sliding connection between the first and second leg arms. The first and second leg arms share a single drive mechanism, and the second leg arm can be reset without power during folding, saving energy and drive costs for the leg stabilizing device.

Description

Technical Field

[0001] This utility model belongs to the field of engineering machinery technology, and in particular relates to a leg stabilizing device and engineering machinery. Background Technology

[0002] Aerial work platforms, forklifts (such as telescopic boom forklifts), and excavators, among other construction machinery, typically require outrigger stabilizers for stability. There are two traditional types of outrigger stabilizers. The first uses a single-arm outrigger structure, where the single arm hangs vertically when retracted and extends horizontally when deployed. The second uses a multi-stage telescopic outrigger, where the outrigger deployment is controlled by telescopic movement; after the outrigger touches the ground, an additional lifting structure is needed to lift the vehicle.

[0003] Among these issues, the single-arm support leg structure is relatively short, has a small span when deployed, and lacks stability, affecting the safety of high-altitude operations. When retracted, the single-arm support leg hangs vertically, and the outrigger stabilizer extends into the turntable's working area, hindering the turntable's rotation. Multi-stage telescopic support legs, when retracted, are long and occupy space in the width direction. Furthermore, deploying the additional lifting structure requires the use of two or more drive components, resulting in long deployment times, high energy consumption, and the existing outrigger stabilizers are not suitable for complex terrain. Utility Model Content

[0004] The main purpose of this utility model is to propose a leg stabilizing device and engineering machinery, which aims to solve the technical problems of small deployment span and high energy consumption of existing leg stabilizing devices.

[0005] To achieve the above objectives, this utility model provides a leg stabilizing device, comprising: a leg housing; a leg mechanism including a first leg arm and a second leg arm, the first leg arm being hinged to the leg housing and being a hollow cylinder, the second leg arm being inserted into the first leg arm and slidingly contacting it, and a support foot with ground support being hinged to the end of the second leg arm away from the leg housing; and a driving mechanism connected to the leg mechanism, wherein the first leg arm is used to rotate relative to the leg housing between a folded position and an unfolded position under the drive of the driving mechanism, and the second leg arm is used to extend and retract relative to the first leg arm under the drive of the driving mechanism.

[0006] In this embodiment of the utility model, the driving mechanism includes: a rotation drive member connected to one of the support legs and used to drive the one support leg to rotate relative to the support leg box; and a linkage component, wherein both the one support leg and the two support legs are connected to the linkage component, and the linkage component is used to synchronously drive the two support legs to extend and retract relative to the one support leg under the rotation drive of the one support leg.

[0007] In this embodiment of the utility model, the linkage component includes: a traction member, one end of which is fixed to the outrigger box and the other end of which is connected to the two outrigger arms. The one outrigger arm is connected to the two outrigger arms through the traction member and is used to drive the two outrigger arms to extend and retract through the traction member; and an elastic member, which is housed in the one outrigger arm and whose two ends are respectively connected to the one outrigger arm and the two outrigger arms.

[0008] In this embodiment of the utility model, one end of the rotary drive component is hinged to the first hinge point of the outrigger box, and the other end is hinged to the second hinge point of one arm of the outrigger through a hinge member. The hinge member is provided with a guide groove for guiding the traction component.

[0009] In this embodiment of the utility model, the vertical line at the second hinge point of the folding device is L1, the perpendicular bisector of the line connecting the second hinge point in the folded position and the second hinge point in the unfolded position is L2, and one end of the traction member is fixed to the first fixing point of the support leg box, the first fixing point being located within the fan-shaped area formed by L1 and L2.

[0010] In this embodiment of the utility model, a reversing component is also provided on one arm of the outrigger. The reversing component can guide and reverse the direction of the traction component. The reversing component is located on the side of the one arm of the outrigger away from the outrigger box, so that the other end of the traction component is fixed to the second fixing point of the second arm of the outrigger near one end of the one arm of the outrigger.

[0011] In this embodiment of the utility model, the end of one arm of the support leg is hinged to the third hinge point of the support leg box, and the third hinge point is located at the end of the support leg box along the width direction of the support leg box.

[0012] In this embodiment of the utility model, one end of the elastic element is connected to the first mounting point of the first arm of the support leg, and the other end is connected to the second mounting point of the second arm of the support leg. The first mounting point is located between the third hinge point and the second hinge point, and the second mounting point is located on the second arm of the support leg near the second fixing point.

[0013] In this embodiment of the invention, the rotary drive component is a hydraulic cylinder, an electric push rod, or a pneumatic drive structure.

[0014] This utility model also proposes an engineering machine, which includes a vehicle body and a support leg stabilizing device as described above, wherein the support leg box is installed at the bottom of the vehicle body.

[0015] Through the above technical solution, the outrigger stabilizing device provided in this utility model embodiment has the following beneficial effects: When deploying the outriggers of the outrigger stabilization device, a drive mechanism can be used to rotate one outrigger arm downwards around the outrigger housing. During the deployment of the first outrigger arm, it can simultaneously extend the second outrigger arm relative to it, allowing both arms to deploy synchronously. By using the first outrigger arm as the driving component for the second outrigger arm, energy consumption of the drive mechanism can be saved. Alternatively, the drive mechanism can simultaneously drive the second outrigger arm to extend relative to the first outrigger arm, enabling both arms to deploy synchronously, thus reducing deployment time and improving deployment efficiency. Until the drive mechanism reaches its maximum stroke, the ends of the outriggers furthest from the outrigger housing support the ground and lift the construction machinery. The outrigger mechanism extends to its maximum distance. When it is necessary to fold the outriggers, the drive mechanism can drive one outrigger arm to rotate upwards around the outrigger housing. Under the action of its own gravity and the tension of the elastic element, the two outrigger arms retract relative to the first outrigger arm. After the drive mechanism is fully reset, the first outrigger arm folds back to its initial position relative to the outrigger housing, and the two outrigger arms return to their initial position. The outrigger mechanism is in a folded state, with the two outrigger arms at least partially housed within the first outrigger arm. This reduces the vertical space occupied after the outriggers are retracted. When retracted, the two outrigger arms overlap with the first outrigger arm, preventing the outrigger mechanism from interfering with other components and allowing the construction machinery to operate flexibly when the outriggers are not extended. The outrigger mechanism uses a single drive component, and the self-weight of the two outrigger arms can be used during the folding process, reducing energy consumption and eliminating the need for an additional drive component. The telescopic double-arm outrigger structure of this utility model achieves maximum extension distance and compact storage by hinged outrigger box to one outrigger arm and sliding connection between one outrigger arm and two outrigger arms. The one outrigger arm and two outrigger arms share a single drive mechanism, and the two outrigger arms can be reset without power drive during folding, saving energy consumption and drive cost of the outrigger stabilization device. The support foot is hinged to the end of the two outrigger arms away from the one outrigger arm, and the top of the support foot can be hinged to the bottom of the two outrigger arms through a pin. When the support foot touches the ground, it automatically rotates to a horizontal position to adapt to sloping terrain. The adaptive design of the support foot can realize automatic leveling of the support foot, making the outrigger stabilization device adaptable to complex terrain.

[0016] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0017] The accompanying drawings are provided to illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the outrigger stabilizing device from one perspective according to an embodiment of the present invention; Figure 2 This is a structural schematic diagram of the outrigger stabilizing device according to one embodiment of the present invention from another perspective; Figure 3 This is a structural schematic diagram of the outrigger stabilizing device according to an embodiment of the present invention from another perspective; Figure 4 This is a schematic diagram of the various connection points of the outrigger stabilizing device under different states according to an embodiment of the present invention.

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

[0019] The specific embodiments of this utility model 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 scope of this utility model.

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

[0021] like Figures 1 to 4 As shown in the embodiment of this utility model, 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 end of the second outrigger arm 22 away from the outrigger box 1 is hinged with a support foot 23 that supports the ground. 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 3The 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 it is necessary to deploy the outrigger mechanism 2 of the outrigger stabilizing device 100, the drive mechanism 3 can drive the first outrigger arm 21 to rotate downward around the outrigger housing 1. During the deployment of the first outrigger arm 21, the first outrigger arm 21 can drive the second outrigger arm 22 to extend relative to the first outrigger arm 21, so that the first outrigger arm 21 and the second outrigger arm 22 deploy synchronously. By using the first outrigger arm 21 as the driving component of the second outrigger arm 22, the energy consumption of the drive mechanism 3 can be saved. Alternatively, the drive mechanism 3 can synchronously drive the second outrigger arm 22 to extend relative to the first outrigger arm 21, so that the first outrigger arm 21 and the second outrigger arm 22 deploy synchronously, saving the deployment time of the outrigger mechanism 2 and improving the deployment efficiency of the outrigger mechanism 2. The outrigger mechanism 2 extends to its maximum stroke until the drive mechanism 3 reaches its maximum stroke. The end of the outrigger arm 22 furthest from the outrigger housing 1 supports the ground and lifts the machinery. The outrigger mechanism 2 extends to its maximum distance. If the outrigger mechanism 2 of the outrigger stabilizing device 100 needs to be folded, the drive mechanism 3 can drive the outrigger arm 21 to rotate upwards around the outrigger housing 1. The outrigger arm 22, under its own weight and the tension of the elastic element 322, retracts relative to the outrigger arm 21. After the drive mechanism 3 is fully reset, the outrigger arm 21 folds relative to the outrigger housing 1 to its initial position, and the outrigger arm 22 returns to its initial position. The outrigger mechanism 2 is in a folded state, with the outrigger arm 22 at least partially housed within the outrigger arm 21. This reduces the vertical space occupied after the outrigger is retracted. When retracted, the outrigger arm 22 overlaps with the outrigger arm 21, and it also avoids interference with other components, allowing the machinery to operate flexibly even when the outrigger is not extended. The outrigger mechanism 2 uses a single drive component, and the weight of the outrigger arms 22 can be used during folding, which can reduce energy consumption and eliminate the need for an additional drive component. In this embodiment, the telescopic structure of the double-arm outrigger is hinged to the outrigger box 1 and the first outrigger arm 21, and slidably connected to the second outrigger arm 22, achieving maximum extension distance and compact storage. The first outrigger arm 21 and the second outrigger arm 22 share a drive mechanism 3, and the second outrigger arm 22 can be reset without power drive during folding, which can save energy consumption and drive cost of the outrigger stabilizing device 100. The support foot 23 is hinged to the end of the second outrigger arm 22 away from the first outrigger arm 21. The support foot 23 is provided with a support plane for supporting the ground. The support foot 23 can adopt a triangular support structure. The top of the support foot 23 can be hinged to the fourth hinge point 222 at the bottom of the second outrigger arm 22 through a pin. When the support foot 23 touches the ground, it automatically rotates to the horizontal to adapt to the sloping terrain. The adaptive design of the support foot 23 can realize the automatic leveling of the support foot 23, so that the outrigger stabilizing device 100 can adapt to complex terrain.

[0024] In one embodiment, the drive mechanism 3 includes a rotary drive component 31 and a linkage component 32. The rotary drive component 31 is connected to the first outrigger arm 21 and is used to drive the first outrigger arm 21 to rotate relative to the outrigger box 1. The linkage component 32 connects both the first outrigger arm 21 and the second outrigger arm 22. The linkage component 32 is used to synchronously drive the second outrigger arm 22 to extend and retract relative to the first outrigger arm 21 under the rotational drive of the first outrigger arm 21. In this embodiment, the rotary drive component 31 can be a hydraulic cylinder, an electric push rod, or a pneumatic drive structure, which is simple in structure and easy to assemble. In this embodiment, the first outrigger arm 21 can extend and retract through the linkage component 32 during the unfolding or folding process. When the outrigger stabilizing device 100 needs to be deployed, the rotary drive 31 drives the first outrigger arm 21 to rotate downward relative to the outrigger housing 1. The first outrigger arm 21 can then extend the second outrigger arm 22 relative to the first outrigger arm 21 via the linkage component 32. When the outrigger stabilizing device 100 needs to be folded, the rotary drive 31 drives the first outrigger arm 21 to rotate upward relative to the outrigger housing 1. The first outrigger arm 21 can then retract the second outrigger arm 22 relative to the first outrigger arm 21 via the linkage component 32. Simultaneously, the second outrigger arm 22 retracts into the first outrigger arm 21 under its own weight and the tension of the elastic element 322. In this embodiment, the linkage design of the first outrigger arm 21 and the second outrigger arm 22 only requires the rotary drive 31 to drive the first outrigger arm 21. The linkage component 32 coordinates the movement of the two arms, ensuring that the outrigger mechanism 2 is automatically deployed / folded, achieving efficient switching between retracted / extended states. This improves the deployment / folding efficiency while also saving on the driving cost and energy consumption of the outrigger stabilizing device 100.

[0025] It should be noted that the linkage component 32 includes a traction member 321 and an elastic member 322. One end of the traction member 321 is fixed to the outrigger box 1, and the other end is connected to the outrigger arm 22. The outrigger arm 21 is connected to the outrigger arm 22 through the traction member 321, and is used to drive the outrigger arm 22 to extend and retract through the traction member 321. The elastic member 322 is housed within the outrigger arm 21, and both ends of the elastic member 322 are connected to the outrigger arm 21 and the outrigger arm 22, respectively. In this embodiment, the elastic member 322 can be a spring. The traction member 321 can be a steel wire rope or a high-strength chain, and the outrigger box 1 and the outrigger arm 22 can be provided with fixing seats for fixing the traction member 321.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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 this embodiment, there are two traction components 321. The two traction components 321 are arranged sequentially along the thickness direction of the outrigger mechanism 2, and can play a linkage role at the same time to ensure the linkage stability between the first outrigger arm 21 and the second outrigger arm 22.

[0033] Specifically, the rotary drive 31 pushes the outrigger arm 21 to rotate downward around the outrigger box 1, increasing the distance between the fixed seat on the outrigger box 1 that fixes the traction member 321 and the guide groove on the outrigger arm 21, thus tensioning the traction member 321. The traction member 321 passes around the guide groove and the reversing member 213 on the outrigger arm 21, causing the outrigger arm 22 to extend. The extension L of the outrigger arm 22 is equal to the extension of the distance 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 outrigger arm 22 will not come out. The rotary drive 31 continues to push the outrigger arm 21 to rotate downward around the outrigger box 1, and the support foot 23 touches the ground and lifts the vehicle. After the rotary drive 31 reaches the end of its stroke, the outrigger mechanism 2 extends to its longest distance. At this time, the extension of the outrigger arm 22 is the difference 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, which is L4-L3. Outrigger folding: The rotary drive 31 pulls the outrigger arm 21 to rotate upward around the outrigger box 1, and the traction component 321 begins to relax; the outrigger arm 22 retracts under its own weight and the tension of the elastic component 322. After the rotary drive 31 is fully retracted, the outrigger arm 21 and the outrigger arm 22 return to their initial positions.

[0034] This utility model also proposes an engineering machinery, which includes a vehicle body and the outrigger stabilization device 100 as described above, with the outrigger box 1 installed at the bottom of the vehicle body. The specific structure of the outrigger stabilization device 100 is as described in the above embodiments. Since the engineering machinery adopts all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated upon here. In one embodiment, the engineering machinery can be applied to aerial work platforms, forklifts (such as rotary telescopic boom forklifts), or excavators, etc.

[0035] Specifically, the construction machinery includes two outrigger stabilization devices 100, which are installed on the vehicle body along the length of the vehicle body. When the construction machinery needs support, the two outrigger stabilization devices 100 are deployed together, increasing the support span of the outrigger stabilization devices 100. After the two-section boom outriggers are deployed, a wider support quadrilateral is formed (the area is increased by about 30%), which significantly enhances stability.

[0036] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0039] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A leg stabilizing device, characterized in that, The outrigger stabilization device (100) includes: Outrigger box (1); 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). The first outrigger arm (21) is a hollow cylinder. The second outrigger arm (22) passes through the first outrigger arm (21) and slides in contact with the first outrigger arm (21). The end of the second outrigger arm (22) away from the outrigger box (1) is hinged with a support foot (23) that supports the ground. The drive mechanism (3) is connected to the support leg mechanism (2). The first arm (21) of the support leg is used to rotate relative to the support leg box (1) between the folded position and the unfolded position under the drive of the drive mechanism (3). The second arm (22) of the support leg is used to extend and retract relative to the first arm (21) of the support leg under the drive of the drive mechanism (3).

2. The outrigger stabilizing device according to claim 1, characterized in that, The drive mechanism (3) includes: A rotation drive (31) is connected to one arm of the outrigger (21) and is used to drive the one arm of the outrigger (21) to rotate relative to the outrigger box (1); Linkage component (32), the first arm (21) and the second arm (22) of the support leg are both connected to the linkage component (32), the linkage component (32) is used to synchronously drive the second arm (22) of the support leg to extend and retract relative to the first arm (21) of the support leg under the rotation drive of the first arm (21).

3. The outrigger stabilizing device according to claim 2, characterized in that, The linkage component (32) includes: The traction member (321) is fixed at one end to the outrigger box (1) and connected at the other end to the outrigger arm (22). The outrigger arm (21) is connected to the outrigger arm (22) through the traction member (321) and is used to drive the outrigger arm (22) to extend and retract through the traction member (321). An elastic element (322) is housed within the first arm (21) of the support leg, and the two ends of the elastic element (322) are respectively connected to the first arm (21) of the support leg and the second arm (22) of the support leg.

4. The outrigger stabilizing device according to claim 3, characterized in that, One end of the rotary drive (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 (211). The hinge (211) is provided with a guide groove for guiding the traction member (321).

5. The outrigger stabilizing device according to claim 4, characterized in that, 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 in the fan-shaped area formed by L1 and L2.

6. The outrigger stabilizing device according to claim 4, characterized in that, 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 box (1), so that the other end of the traction component (321) is fixed to the second fixing point of the outrigger arm (22) near the end of the outrigger arm (21).

7. The outrigger stabilizing device according to claim 6, characterized in that, The end of one arm (21) of the outrigger is hinged to the 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 width direction of the box.

8. The outrigger stabilizing device according to claim 7, characterized in that, One end of the elastic element (322) is connected to the first mounting point (214) of the first arm of the outrigger (21), and the other end is connected to the second mounting point (221) of the second arm of the outrigger (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 on the second arm of the outrigger (22) near the second fixing point.

9. The outrigger stabilizing device according to any one of claims 2 to 6, characterized in that, The rotary drive component (31) is a hydraulic cylinder, an electric push rod, or a pneumatic drive structure.

10. An engineering machinery, characterized in that, The construction machinery includes a vehicle body and a leg stabilizing device (100) as described in any one of claims 1 to 9, wherein the leg box (1) is installed at the bottom of the vehicle body.

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