Landing leg mechanism capable of being rapidly stretched, retracted and folded and intelligent overhead working truck

Abstract

The utility model belongs to the technical field of overhead working trucks, and particularly discloses a supporting leg mechanism capable of being rapidly stretched, retracted and folded and an intelligent overhead working truck. The supporting leg mechanism comprises a first-stage horizontal supporting leg, a second-stage horizontal supporting leg, a horizontal hydraulic cylinder, a third-stage horizontal supporting leg, a rotating motor and a vertical supporting leg, a multi-section arrangement mode is adopted, and the second-stage horizontal supporting leg, the third-stage horizontal supporting leg and the vertical supporting leg are driven by the horizontal hydraulic cylinder to move relative to the first-stage horizontal supporting leg. Therefore, the single section drives the whole body to extend and shorten. When the second-stage horizontal supporting leg stretches out and draws back relative to the first-stage horizontal supporting leg, the third-stage horizontal supporting leg rotates relative to the second-stage horizontal supporting leg under the driving of the rotating motor, and the vertical supporting leg rotates relative to the third-stage horizontal supporting leg under the action of the gravity of the vertical supporting leg, so that the last-stage section can be rapidly stretched out and folded back; therefore, the stretching and retracting action time of the supporting leg mechanism is effectively shortened, and the working efficiency of the overhead working truck is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the high altitude operation vehicle technical field relates to a kind of fast telescopic folding outrigger mechanism and intelligent high altitude operation vehicle. BACKGROUND

[0002] High-altitude operation vehicle is a special vehicle for transporting workers and equipment for high-altitude operation. High-altitude operation vehicle generally includes a vehicle chassis, an arm support and a work platform. The lower end of the arm support is connected to the vehicle chassis, and the upper end of the arm support is connected to the work platform. After the arm support is extended and raised, the work platform is moved to the high-altitude work area.

[0003] Before the high-altitude operation vehicle operates, the outrigger mechanism on the vehicle chassis needs to be extended outward and contact the ground. The outrigger mechanism is located around the vehicle chassis. By increasing the support base of the high-altitude operation vehicle, the stability against overturning of the high-altitude operation vehicle is improved.

[0004] Currently, the outrigger mechanism of the high-altitude operation vehicle is usually divided into folding type and multi-stage telescopic type. Although the folding type outrigger mechanism has a relatively compact structure, its telescopic distance is short, and it mostly relies on hydraulic cylinders to realize folding action, which often leads to difficulty in ensuring the position accuracy of the outrigger mechanism after it is unfolded. On the other hand, although the multi-stage telescopic type outrigger mechanism can adjust the length within a larger range, its internal structure is complex, and the extension and retraction action takes a long time, which not only increases the operation time of preparation and completion, but also reduces the operation efficiency of the high-altitude operation vehicle.

[0005] Therefore, the outrigger mechanism of the high-altitude operation vehicle in the prior art needs to be further improved. INVENTION CONTENTS

[0006] The utility model aims to provide a kind of fast telescopic folding outrigger mechanism and intelligent high altitude operation vehicle, by optimizing the arrangement mode of each outrigger, the telescopic action is combined with folding action, the time of outrigger mechanism outward extension and inward contraction is shortened, and the working efficiency of high-altitude operation vehicle is effectively improved.

[0007] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0008] A kind of fast telescopic folding outrigger mechanism, characterized in that, including first level horizontal outrigger, second level horizontal outrigger, horizontal hydraulic cylinder, third level horizontal outrigger, rotary motor and vertical outrigger;

[0009] The first level horizontal outrigger is used to be assembled on the vehicle chassis.

[0010] The second level horizontal outrigger is in sliding cooperation with the first level horizontal outrigger.

[0011] One end of the horizontal hydraulic cylinder is connected with the first horizontal leg, and the other end of the horizontal hydraulic cylinder is connected with the second horizontal leg, and the horizontal hydraulic cylinder drives the second horizontal leg to extend or retract relative to the first horizontal leg;

[0012] The third horizontal leg is hinged to one end of the second horizontal leg away from the first horizontal leg;

[0013] The rotary motor is in power connection with the third horizontal leg, and drives the third horizontal leg to rotate relative to the second horizontal leg;

[0014] The vertical leg is hinged to one end of the third horizontal leg away from the second horizontal leg.

[0015] Preferably, the telescopic rod of the horizontal hydraulic cylinder is provided with a mounting seat at the end, and the mounting seat is connected with the first horizontal leg, and the cylinder body of the horizontal hydraulic cylinder is connected with the second horizontal leg.

[0016] Preferably, a locking assembly is arranged between the second horizontal leg and the third horizontal leg, and is used to keep the third horizontal leg stationary relative to the second horizontal leg.

[0017] Preferably, the third horizontal leg is provided with a locking hole, and the second horizontal leg is provided with a clamping groove matched with the locking hole;

[0018] The locking assembly comprises a locking motor and a locking shaft, the locking motor is arranged on the inner side of the third horizontal leg, one end of the locking shaft is connected with the locking motor, and the other end of the locking shaft extends into the locking hole;

[0019] The locking motor drives the locking shaft to move outward, so that the other end of the locking shaft abuts against the clamping groove; and the locking motor drives the locking shaft to move inward, so that the other end of the locking shaft is separated from the clamping groove.

[0020] Preferably, the third horizontal leg is provided with a first rotating shaft at one end close to the vertical leg;

[0021] The vertical leg is provided with a second rotating shaft at one end close to the third horizontal leg;

[0022] A connecting plate is arranged between the first rotating shaft and the second rotating shaft.

[0023] Preferably, the vertical leg comprises a vertical leg seat, a vertical hydraulic cylinder and a vertical telescopic leg;

[0024] The vertical leg seat is hinged to one end of the third horizontal leg away from the second horizontal leg;

[0025] One end of the vertical hydraulic cylinder is connected with the vertical leg seat, and the other end of the vertical hydraulic cylinder is connected with the vertical telescopic leg, and the vertical hydraulic cylinder drives the vertical telescopic leg to extend or retract relative to the vertical leg seat.

[0026] Preferably, the vertical telescopic support leg comprises a limiting lug, a universal cross shaft and a supporting foot;

[0027] The limiting lug is arranged at one end of the vertical hydraulic cylinder extending out of the vertical support leg base, and the supporting foot is connected to the limiting lug through the universal cross shaft.

[0028] Preferably, the lower end of the second-level horizontal support leg is provided with a first limiting plate, and the first limiting plate is located at the side of the second-level horizontal support leg close to the third-level horizontal support leg.

[0029] The upper end of the third-level horizontal support leg is provided with a second limiting plate, and the second limiting plate is located at the side of the third-level horizontal support leg close to the vertical support leg.

[0030] Preferably, the rotary motor is connected to the third-level horizontal support leg through a rotary flange.

[0031] An intelligent aerial work vehicle is provided with the telescopic and foldable support leg mechanism.

[0032] Compared with the prior art, the telescopic and foldable support leg mechanism has the following beneficial effects:

[0033] As described above, the telescopic and foldable support leg mechanism is applied to an aerial work vehicle, and the support leg mechanism adopts a multi-section arrangement mode, and the second-level horizontal support leg, the third-level horizontal support leg and the vertical support leg are driven by the horizontal hydraulic cylinder to move relative to the first-level horizontal support leg, so as to realize the elongation and shortening of the whole driven by a single section. Meanwhile, when the second-level horizontal support leg is telescoped relative to the first-level horizontal support leg, the third-level horizontal support leg will rotate relative to the second-level horizontal support leg under the driving of the rotary motor, and the vertical support leg will also rotate relative to the third-level horizontal support leg under the action of its own gravity, so as to realize the rapid extension and folding of the last section, thereby effectively shortening the action time of the extension and contraction of the support leg mechanism and improving the working efficiency of the aerial work vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced.

[0035] Figure 1 FIG. 1 is a structural schematic view of the telescopic and foldable support leg mechanism of the embodiment of the present application;

[0036] Figure 2 FIG. 2 is a sectional view of the telescopic and foldable support leg mechanism of the embodiment of the present application;

[0037] Figure 3The cross section of the connecting position of the second horizontal supporting leg and the third horizontal supporting leg in the embodiment of the utility model Figure 1 ;

[0038] Figure 4 The cross section of the connecting position of the second horizontal supporting leg and the third horizontal supporting leg in the embodiment of the utility model Figure 2 ;

[0039] Figure 5 The cross section of the connecting position of the third horizontal supporting leg and the vertical supporting leg in the embodiment of the utility model;

[0040] Figure 6 The structural schematic diagram of the supporting leg mechanism in the stretched state in the embodiment of the utility model;

[0041] Figure 7 The structural schematic diagram of the supporting leg mechanism in the contracted state in the embodiment of the utility model;

[0042] Figure 8 The working range diagram of the quick telescopic folding supporting leg mechanism in the embodiment of the utility model;

[0043] Wherein, 1 - first level horizontal supporting leg, 2 - second level horizontal supporting leg, 21 - horizontal strip, 22 - first limit board, 3 - horizontal hydraulic cylinder, 31 - assembly seat, 4 - third level horizontal supporting leg, 41 - first rotating shaft, 42 - second limit board, 5 - rotating motor, 51 - rotating flange;

[0044] 6 - vertical supporting leg, 61 - second rotating shaft, 62 - vertical supporting leg seat, 63 - vertical hydraulic cylinder, 64 - vertical telescopic supporting leg, 641 - limit lug, 642 - universal cross shaft, 643 - supporting foot, 7 - locking assembly, 71 - locking motor, 72 - locking shaft, 8 - connecting plate. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0046] Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the protection scope of the utility model.

[0047] It should be noted that all directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the utility model are only used to explain the relative position relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings), if the specific posture changes, the directionality indications also change accordingly.

[0048] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. 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.

[0049] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean 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.

[0050] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0051] Example 1

[0052] like Figures 1 to 8 As shown, the outrigger mechanism that can be quickly extended and folded in this embodiment includes a first-stage horizontal outrigger 1, a second-stage horizontal outrigger 2, a horizontal hydraulic cylinder 3, a third-stage horizontal outrigger 4, a rotary motor 5, and a vertical outrigger 6.

[0053] The first-stage horizontal support leg 1 is used for mounting on the vehicle chassis. In this embodiment, the first-stage horizontal support leg 1 is welded together from five plates.

[0054] The second-stage horizontal support leg 2 is slidably engaged with the first-stage horizontal support leg 1, and the second-stage horizontal support leg 2 can extend or retract relative to the first-stage horizontal support leg 1. In this embodiment, the second-stage horizontal support leg 2 is welded together from four plates, and the second-stage horizontal support leg 2 is nested inside the first-stage horizontal support leg 1 and slides along the slide rail.

[0055] One end of the horizontal hydraulic cylinder 3 is connected to the first-stage horizontal support leg 1, and the other end is connected to the second-stage horizontal support leg 2. The horizontal hydraulic cylinder 3 drives the second-stage horizontal support leg 2 to extend or retract relative to the first-stage horizontal support leg 1. Specifically, the telescopic rod of the horizontal hydraulic cylinder 3 is provided with a mounting base 31, which is connected to the first-stage horizontal support leg 1. The cylinder body of the horizontal hydraulic cylinder 3 is connected to the second-stage horizontal support leg 2. When the telescopic rod of the horizontal hydraulic cylinder 3 extends, the horizontal hydraulic cylinder 3 drives the second-stage horizontal support leg 2 to extend relative to the first-stage horizontal support leg 1; when the telescopic rod of the horizontal hydraulic cylinder 3 retracts, the horizontal hydraulic cylinder 3 drives the second-stage horizontal support leg 2 to retract relative to the first-stage horizontal support leg 1.

[0056] In this embodiment, the horizontal hydraulic cylinder 3 is preferably located at the center of the interior of the first-stage horizontal support leg 1 and the second-stage horizontal support leg 2. The second-stage horizontal support leg 2 has a central opening at one end near the first-stage horizontal support leg 1, allowing the cylinder body of the horizontal hydraulic cylinder 3 to pass through. A horizontal bar 21 is located at the center of the interior of the second-stage horizontal support leg 2, with both ends connected to the inner surfaces of the second-stage horizontal support leg 2. The front end of the telescopic rod of the horizontal hydraulic cylinder 3 is connected to the horizontal bar 21. The horizontal bar 21 is preferably made of metal and is welded to the inner surfaces of the left and right sides of the second-stage horizontal support leg 2. The maximum extension / retraction limit of the second-stage horizontal support leg 2 relative to the first-stage horizontal support leg 1 is the maximum stroke of the horizontal hydraulic cylinder 3.

[0057] In addition, in this embodiment, a limiting strip is provided on the inner side of the first-level horizontal support leg 1 near the chassis. The limiting strip is welded to the inner side of the first-level horizontal support leg 1 and is used to limit the second-level horizontal support leg 2 when it retracts relative to the first-level horizontal support leg 1, so as to prevent the first-level horizontal support leg 1 from colliding with the second-level horizontal support leg 2.

[0058] The third-level horizontal support leg 4 is hinged to the end of the second-level horizontal support leg 2 away from the first-level horizontal support leg 1. In this embodiment, the third-level horizontal support leg 4 is welded together from four plates. The rotary motor 5 is poweredly connected to the third-level horizontal support leg 4, and the rotary motor 5 drives the third-level horizontal support leg 4 to rotate relative to the second-level horizontal support leg 2.

[0059] like Figure 4 As shown, in this embodiment, the rotary motor 5 and the third-stage horizontal support leg 4 are preferably connected via a rotary flange 51. The rotary motor 5 is symmetrically arranged on the left and right sides of the second-stage horizontal support leg 2. The second-stage horizontal support leg 2 and the third-stage horizontal support leg 4 are provided with through holes for the output shaft of the rotary motor 5 to pass through. The rotary flange 51 is connected to the third-stage horizontal support leg 4 by bolts, and the output shaft of the rotary motor 5 is keyed to the rotary flange 51, thereby realizing the rotary motor 5 driving the third-stage horizontal support leg 4 to rotate relative to the second-stage horizontal support leg 2.

[0060] In this embodiment, a locking component 7 is also provided between the second-level horizontal support leg 2 and the third-level horizontal support leg 4 to keep the third-level horizontal support leg 4 stationary relative to the second-level horizontal support leg 2, thereby stabilizing the force on the support leg mechanism.

[0061] Specifically, the third-stage horizontal support leg 4 is provided with a locking hole, and the second-stage horizontal support leg 2 is provided with a locking groove that mates with the locking hole. The locking assembly 7 includes a locking motor 71 and a locking shaft 72. The locking motor 71 is located inside the third-stage horizontal support leg 4, and one end of the locking shaft 72 is connected to the locking motor 71, while the other end of the locking shaft 72 extends into the locking hole. When the third-stage horizontal support leg 4 rotates to be parallel to the second-stage horizontal support leg 2, the locking hole communicates with the locking groove, and the locking motor 71 drives the locking shaft 72 to move outward, causing the other end of the locking shaft 72 to abut against the locking groove. At this time, the third-stage horizontal support leg 4 remains stationary relative to the second-stage horizontal support leg 2. When the locking motor 71 drives the locking shaft 72 to move inward, causing the other end of the locking shaft 72 to separate from the locking groove, the third-stage horizontal support leg 4 can rotate relative to the second-stage horizontal support leg 2.

[0062] The vertical support leg 6 is rotatably hinged to the end of the third-level horizontal support leg 4 away from the second-level horizontal support leg 2. Specifically, a first pivot 41 is preferably provided at the end of the third-level horizontal support leg 4 near the vertical support leg 6. A second pivot 61 is provided at the end of the vertical support leg 6 near the third-level horizontal support leg 4. A connecting plate 8 is provided between the first pivot 41 and the second pivot 61. The third-level horizontal support leg 4 and the vertical support leg 6 are connected by the connecting plate 8, and the third-level horizontal support leg 4 and the vertical support leg 6 can rotate relative to each other.

[0063] In this embodiment, a circular groove is provided on the side of the connecting plate 8 near the first rotating shaft 41. One end of the first rotating shaft 41 extends into the circular groove. The width of the second rotating shaft 61 is greater than that of the vertical support leg 6. Both ends of the second rotating shaft 61 pass through the connecting plate 8. The connecting plate 8 and the vertical support leg 6 are connected by bolts, so that the connecting plate 8 can rotate relative to the third-level horizontal support leg 4, and the connecting plate 8 remains stationary relative to the vertical support leg 6.

[0064] In this embodiment, the vertical support leg 6 includes a vertical support leg base 62, a vertical hydraulic cylinder 63, and a vertical telescopic support leg 64. The vertical support leg base 62 is hinged to the end of the third-stage horizontal support leg 4 furthest from the second-stage horizontal support leg 2. One end of the vertical hydraulic cylinder 63 is connected to the vertical support leg base 62, and the other end is connected to the vertical telescopic support leg 64. The vertical hydraulic cylinder 63 drives the vertical telescopic support leg 64 to extend or retract relative to the vertical support leg base 62.

[0065] The vertical telescopic outrigger 64 includes a limiting lug 641, a universal joint 642, and a support foot 643. The vertical telescopic outrigger 64 can adapt to uneven ground by swinging the support foot 643. In this embodiment, the limiting lug 641 is located at the end of the vertical hydraulic cylinder 63 extending from the vertical outrigger seat 62. Specifically, the limiting lug 641 is preferably welded to the front end of the telescopic rod of the vertical hydraulic cylinder 63, and the size of the limiting lug 641 is slightly larger than the opening at the bottom of the vertical outrigger seat 62, so that the limiting lug 641 can be limited when the telescopic rod of the vertical hydraulic cylinder 63 retracts. The support foot 643 is connected to the limiting lug 641 via the universal joint 642. Specifically, the lower end of the limiting lug 641 is hinged to the horizontal axis of the universal joint 642, and the vertical axis of the universal joint 642 is hinged to the support foot 643. The hinge joints between the universal joint 642 and the limiting lug 641, and between the universal joint 642 and the support foot 643, are also provided with washers that are fixed by bolts for further fixation and limiting.

[0066] Furthermore, in this embodiment, a first limiting plate 22 is provided at the lower end of the second-level horizontal support leg 2, and the first limiting plate 22 is located on the side of the second-level horizontal support leg 2 near the third-level horizontal support leg 4. Figure 6 and Figure 7 As shown, when the outrigger mechanism is in the extended state, the first limiting plate 22 can support the third-level horizontal outrigger 4; when the outrigger mechanism is in the retracted state, the first limiting plate 22 can also support the vertical outrigger 6.

[0067] A second limiting plate 42 is provided at the upper end of the third-level horizontal support leg 4. The second limiting plate 42 is located on the side of the third-level horizontal support leg 4 closest to the vertical support leg 6. When the support leg mechanism is in the extended state, the second limiting plate 42 is located above the vertical support leg 6, which can keep the vertical support leg 6 and the third-level horizontal support leg 4 stable.

[0068] The usage process of the quickly extendable and foldable support leg mechanism in this embodiment is as follows:

[0069] Taking the transition of the outrigger mechanism from a retracted state to an extended state as an example, the horizontal hydraulic cylinder 3 extends and drives the second-stage horizontal outrigger 2, the third-stage horizontal outrigger 4, and the vertical outrigger 6 to move outward relative to the first-stage horizontal outrigger 1. Simultaneously, the third-stage horizontal outrigger 4 rotates relative to the second-stage horizontal outrigger 2 under the drive of the rotary motor 5, and the vertical outrigger 6 also rotates relative to the third-stage horizontal outrigger 4 under its own weight. When the third-stage horizontal outrigger 4 is parallel to the second-stage horizontal outrigger 2, the locking hole of the third-stage horizontal outrigger 3 connects to the locking groove of the second-stage horizontal outrigger 2. The locking motor drives the locking shaft 72 to move outward along the locking hole until the locking shaft 72 abuts against the locking groove, thus keeping the third-stage horizontal outrigger 4 stationary relative to the second-stage horizontal outrigger 2 through the locking assembly 7. At this time, the vertical outrigger 6 rotates to a position perpendicular to the third-stage horizontal outrigger 4 under its own weight, and the second limiting plate 42 maintains relative stability between the vertical outrigger 6 and the third-stage horizontal outrigger 4. The vertical hydraulic cylinder 63 drives the vertical telescopic outrigger 64 to extend relative to the vertical outrigger seat 62. When the vertical telescopic outrigger 64 contacts the ground, it can adjust its tilt angle on its own. The outrigger mechanism completes the transition from the retracted state to the extended state. It is distributed in an H shape around the chassis to support the aerial work vehicle.

[0070] Example 2

[0071] An intelligent aerial work platform vehicle is provided, wherein the intelligent aerial work platform vehicle is equipped with the quick-extending and folding outrigger mechanism described in Embodiment 1.

[0072] The intelligent aerial work platform vehicle of this embodiment is equipped with the rapidly extendable and foldable outrigger mechanism described in Embodiment 1. This outrigger mechanism employs a multi-section arrangement, with a horizontal hydraulic cylinder driving the second-stage horizontal outrigger, third-stage horizontal outrigger, and vertical outrigger to move relative to the first-stage horizontal outrigger, thus achieving the extension and retraction of the entire structure through a single section. Furthermore, while the second-stage horizontal outrigger extends and retracts relative to the first-stage horizontal outrigger, the third-stage horizontal outrigger rotates relative to the second-stage horizontal outrigger under the drive of a rotary motor, and the vertical outrigger also rotates relative to the third-stage horizontal outrigger under its own gravity. This enables the rapid extension and retraction of the final stage sections, effectively shortening the extension and retraction time of the outrigger mechanism and improving the working efficiency of the intelligent aerial work platform vehicle.

[0073] The present embodiment has now been described in detail with reference to the accompanying drawings. Based on the above description, those skilled in the art should have a clear understanding of the quick-extending and folding outrigger mechanism and the intelligent aerial work platform of this utility model. Of course, the above description is only a preferred embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural transformations made using the content of this utility model's specification and drawings under the inventive concept of this utility model, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model and should be protected by this utility model.

Claims

1. A leg mechanism that can be quickly extended, retracted, and folded, characterized in that, It includes a first-stage horizontal outrigger, a second-stage horizontal outrigger, a horizontal hydraulic cylinder, a third-stage horizontal outrigger, a rotary motor, and a vertical outrigger; The first-stage horizontal outrigger is used for mounting on the vehicle chassis; The second-stage horizontal support leg slides in conjunction with the first-stage horizontal support leg; One end of the horizontal hydraulic cylinder is connected to the first-stage horizontal support leg, and the other end of the horizontal hydraulic cylinder is connected to the second-stage horizontal support leg. The horizontal hydraulic cylinder drives the second-stage horizontal support leg to extend or retract relative to the first-stage horizontal support leg. The third-level horizontal support leg is hinged to the end of the second-level horizontal support leg away from the first-level horizontal support leg; The rotary motor is poweredly connected to the third-stage horizontal support leg, and the rotary motor drives the third-stage horizontal support leg to rotate relative to the second-stage horizontal support leg. The vertical support leg is hinged to the end of the third-level horizontal support leg away from the second-level horizontal support leg.

2. The retractable and foldable support leg mechanism according to claim 1, characterized in that, The telescopic rod of the horizontal hydraulic cylinder is provided with an assembly seat at its end. The assembly seat is connected to the first-stage horizontal support leg, and the cylinder body of the horizontal hydraulic cylinder is connected to the second-stage horizontal support leg.

3. The retractable and foldable support leg mechanism according to claim 1, characterized in that, A locking assembly is provided between the second-stage horizontal support leg and the third-stage horizontal support leg to keep the third-stage horizontal support leg stationary relative to the second-stage horizontal support leg.

4. The retractable and foldable support leg mechanism according to claim 3, characterized in that, The third-level horizontal support leg is provided with a locking hole, and the second-level horizontal support leg is provided with a locking groove that mates with the locking hole; The locking assembly includes a locking motor and a locking shaft. The locking motor is located inside the third-level horizontal support leg. One end of the locking shaft is connected to the locking motor, and the other end of the locking shaft extends into the locking hole. The locking motor drives the locking shaft to move outward so that the other end of the locking shaft abuts against the locking groove; the locking motor also drives the locking shaft to move inward so that the other end of the locking shaft separates from the locking groove.

5. The retractable and foldable support leg mechanism according to claim 1, characterized in that, The third-level horizontal support leg is provided with a first pivot at one end near the vertical support leg; The vertical support leg is provided with a second pivot at one end near the third-level horizontal support leg; A connecting plate is provided between the first rotating shaft and the second rotating shaft.

6. The retractable and foldable support leg mechanism according to claim 1, characterized in that, The vertical outrigger includes a vertical outrigger base, a vertical hydraulic cylinder, and a vertical telescopic outrigger; The vertical support leg is hinged to the end of the third-level horizontal support leg away from the second-level horizontal support leg; One end of the vertical hydraulic cylinder is connected to the vertical outrigger seat, and the other end of the vertical hydraulic cylinder is connected to the vertical telescopic outrigger. The vertical hydraulic cylinder drives the vertical telescopic outrigger to extend or retract relative to the vertical outrigger seat.

7. The retractable and foldable support leg mechanism according to claim 6, characterized in that, The vertical telescopic outrigger includes a limiting lug, a universal cross shaft, and a support foot; The limiting lug is located at one end of the vertical hydraulic cylinder extending from the vertical support leg seat, and the support leg is connected to the limiting lug via a universal cross shaft.

8. The retractable and foldable support leg mechanism according to claim 1, characterized in that, The lower end of the second-level horizontal support leg is provided with a first limiting plate, which is located on the side of the second-level horizontal support leg close to the third-level horizontal support leg. The upper end of the third-level horizontal support leg is provided with a second limiting plate, which is located on the side of the third-level horizontal support leg closer to the vertical support leg.

9. The retractable and foldable support leg mechanism according to claim 1, characterized in that, The rotary motor is connected to the third-stage horizontal support leg via a rotary flange.

10. An intelligent aerial work platform vehicle, characterized in that, The intelligent aerial work platform is equipped with a quick-extending and folding outrigger mechanism as described in any one of claims 1 to 9.

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