Foldable multi-stage telescopic supporting leg structure for aerial work platform
By designing a foldable, multi-stage telescopic outrigger structure, and utilizing the drive of horizontal hydraulic cylinders, pulleys, and wire ropes, combined with the design of fixed connecting plates and stops, the problem of difficulty in leveling outriggers on uneven ground was solved. This achieved a balance between support stability and space compactness, improving the vehicle's passability and safety.
Patent Information
- Application Number
- CN202521578675.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-28
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-07-28
AI Technical Summary
The outriggers of existing aerial work platforms are difficult to keep level on uneven ground, and they take up too much space when driving or moving, affecting the vehicle's passability and safety.
It adopts a foldable multi-stage telescopic outrigger structure, including a basic outrigger, a two-section outrigger, a three-section outrigger, a telescopic drive mechanism, and a folding outrigger. Through the cooperation of horizontal hydraulic cylinders, pulleys, and steel wire ropes, the outriggers can independently extend, retract, and level. Combined with the design of fixed connecting plates and blocks, it ensures stable support of the outriggers under different ground conditions.
It enables stable leveling of the outriggers on rugged terrain, increases the distance between support points, improves the stability of the work platform, and reduces the space occupied during storage, thereby enhancing the vehicle's passability and safety.
Smart Images
Figure CN224677747U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of aerial work platform technology, and in particular to a foldable multi-stage telescopic outrigger structure for aerial work platforms. Background Technology
[0002] Aerial work platforms, also known as aerial work vehicles or lifting work platforms, are special engineering vehicles or equipment used to lift personnel, tools, and materials to a predetermined height for operations. Outriggers are absolutely crucial components for the safe and stable operation of aerial work platforms. They are typically located under or on the sides of the vehicle's chassis, greatly improving anti-tipping capabilities by increasing the overall support area between the vehicle and the ground, preventing damage to tires and chassis from excessive local pressure, and allowing the vehicle to maintain a level position even on uneven ground by independently adjusting the extension length of each outrigger. When the vehicle is traveling or moving between sites, the outriggers need to be fully extendable, folded, and stowed close to the frame to reduce width and length, improving the aerial work platform's maneuverability. Utility Model Content
[0003] This utility model aims to address the shortcomings of existing technologies by providing a foldable multi-stage telescopic outrigger structure for aerial work platforms.
[0004] To achieve the above objectives, the present invention adopts the following technical solution: a foldable multi-stage telescopic outrigger structure for aerial work platforms, comprising: a basic outrigger, a two-section outrigger, a three-section outrigger, a telescopic drive mechanism, and a folding outrigger. The two-section outrigger is telescopically disposed within the basic outrigger, the three-section outrigger is telescopically disposed within the two-section outrigger, and the folding outrigger is installed at the outer end of the three-section outrigger. The telescopic drive mechanism includes a horizontal hydraulic cylinder, a pulley, and a steel wire rope. The horizontal hydraulic cylinder passes through the interior of the basic outrigger, the second outrigger, and the third outrigger. The piston rod end of the horizontal hydraulic cylinder is fixedly connected to the base plate of the basic outrigger. The cylinder body of the horizontal hydraulic cylinder is fixedly connected to the base plate of the second outrigger. The pulley is fixedly installed on the outside of the second outrigger. One end of the steel wire rope is fixedly connected to the outer wall of the basic outrigger, and the other end of the steel wire rope passes around the pulley and is fixedly connected to the base plate of the third outrigger.
[0005] Furthermore, the folding outrigger includes: a fixed frame, a supporting hydraulic cylinder, a supporting rotating rod, and a supporting chassis. The fixed frame is fixed to the three-section outrigger. The top end of the supporting rotating rod is rotatably connected to one end of the fixed frame. The cylinder body of the supporting hydraulic cylinder is rotatably connected to the other end of the fixed frame. The bottom end of the supporting rotating rod is rotatably connected to the supporting chassis. The piston rod of the supporting hydraulic cylinder is rotatably connected to the supporting chassis.
[0006] Furthermore, it also includes a fixed connecting plate, on which the basic support leg is fixedly mounted, and the fixed connecting plate is provided with several threaded through holes.
[0007] Furthermore, a first stop is provided at the opening of the basic support leg, and a second stop is provided on the outer side of the middle part of the two-section support leg.
[0008] Furthermore, a storage groove is provided at the lower outer end of the three-section support leg.
[0009] The beneficial effects of this utility model are as follows: The outriggers are installed at the four corners of the aerial work platform, increasing the distance between the support points and forming a stable support polygon to prevent the entire vehicle from tipping over, especially during high-altitude and large-span operations; each outrigger can be independently extended and retracted for leveling, ensuring the work platform remains level even on rough terrain; through a nested multi-stage telescopic and folding structure, the outriggers are housed within a limited installation space. It perfectly balances the core contradiction between compactness and operational stability, providing vertical travel through folding and horizontal span through multi-stage telescopic extension, thus providing a solid and reliable foundation for safe high-altitude operations. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the structure of this utility model; In the diagram: 1-Basic outrigger; 2-Two-section outrigger; 3-Three-section outrigger; 4-Horizontal hydraulic cylinder; 5-Pulley; 6-Wire rope; 7-Fixed frame; 8-Support hydraulic cylinder; 9-Support rotating rod; 10-Support chassis; 11-Fixed connecting plate; 12-First stop; 13-Second stop; 14-Storage slot; The accompanying drawings in this utility model are all schematic diagrams and their sizes do not represent actual dimensions. The following will describe in detail the embodiments of this utility model with reference to the accompanying drawings. Detailed Implementation
[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments: like Figures 1-2 As shown, a foldable multi-stage telescopic outrigger structure for aerial work platforms includes: a basic outrigger 1, a two-section outrigger 2, a three-section outrigger 3, a telescopic drive mechanism, and a folding outrigger. The two-section outrigger 2 is telescopically disposed within the basic outrigger 1, the three-section outrigger 3 is telescopically disposed within the two-section outrigger 2, and the folding outrigger is installed at the outer end of the three-section outrigger 3. The telescopic drive mechanism includes: a horizontal hydraulic cylinder 4, a pulley 5, and a steel wire rope 6. The horizontal hydraulic cylinder 4 is installed inside the basic support leg 1, the second-section support leg 2, and the third-section support leg 3. The piston rod end of the horizontal hydraulic cylinder 4 is fixedly connected to the base plate of the basic support leg 1. The cylinder body of the horizontal hydraulic cylinder 4 is fixedly connected to the base plate of the second-section support leg 2. The pulley 5 is fixedly installed on the outside of the second-section support leg 2. One end of the steel wire rope 6 is fixedly connected to the outer wall of the basic support leg 1, and the other end of the steel wire rope 6 passes around the pulley 5 and is fixedly connected to the base plate of the third-section support leg 3.
[0012] Specifically, the basic outrigger 1, the second-section outrigger 2, and the third-section outrigger 3 are a box-shaped arm stacked together. The horizontal hydraulic cylinder 4 extends outward to drive the second-section outrigger 2 to extend. At the same time, since the length of the wire rope 6 is inconvenient, the section of the wire rope 6 on the outside of the basic outrigger 1 becomes longer, and the section of the wire rope 6 on the inside of the second-section outrigger 2 becomes shorter, pulling the third-section outrigger 3 to extend outward, so as to achieve the synchronous extension of the second-section outrigger 2 and the third-section outrigger 3.
[0013] The folding outrigger includes: a fixed frame 7, a supporting hydraulic cylinder 8, a supporting rotating rod 9, and a supporting chassis 10. The fixed frame 7 is fixed to the three-section outrigger 3. The top end of the supporting rotating rod 9 is rotatably connected to one end of the fixed frame 7. The cylinder body of the supporting hydraulic cylinder 8 is rotatably connected to the other end of the fixed frame 7. The bottom end of the supporting rotating rod 9 is rotatably connected to the supporting chassis 10. The piston rod of the supporting hydraulic cylinder 8 is rotatably connected to the supporting chassis 10.
[0014] Specifically, the extension and retraction of the hydraulic cylinder 8 drives the support rod 9 to rotate around the shaft connected to the fixed frame 7, thereby adapting to the terrain and leveling the work vehicle.
[0015] It also includes a fixed connecting plate 11, on which the basic support leg 1 is fixedly installed, and the fixed connecting plate 11 has several threaded through holes.
[0016] Specifically, the fixed connecting plate 11 is connected to the rotating platform of the aerial work vehicle using bolts.
[0017] A first stop 12 is provided at the opening of the basic outrigger 1, and a second stop 13 is provided on the outer side of the middle part of the second-section outrigger 2. This prevents the outrigger from moving horizontally beyond a predetermined stroke.
[0018] The lower outer end of the three-section support leg 3 is provided with a storage groove 14 for storing the folding support leg.
[0019] The method of using this utility model is as follows: Four sets of this utility model are symmetrically installed on both sides of the aerial work platform vehicle; the vehicle is positioned, the gear is put into neutral, the handbrake is engaged, and the operator starts the outrigger system; first, the multi-stage outriggers are extended, the horizontal hydraulic cylinder 4 extends outward to drive the second-section outrigger 2 to extend, and the steel wire rope 6 pulls the third-section outrigger 3 to extend outward, so as to achieve the synchronous extension of the second-section outrigger 2 and the third-section outrigger 3; the support hydraulic cylinder 8 retracts to drive the support rotating rod 9 to rotate outward, the folding outriggers unfold, and the support chassis 10 gradually contacts the ground. According to the level data of the aerial work platform vehicle, the extension and retraction lengths of the support hydraulic cylinders 8 on both sides are adjusted to level the vehicle frame, lock the mechanism, and after the operation is completed, the folding outriggers and multi-stage outriggers are retracted in the opposite direction.
[0020] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any improvements made using the inventive concept and technical solution of the present invention, or direct application to other situations without modification, are all within the protection scope of the present invention.
Claims
1. A foldable multi-stage telescopic outrigger structure for aerial work platforms, characterized in that, include: The basic support leg (1), the two-section support leg (2), the three-section support leg (3), the telescopic drive mechanism, and the folding support leg are provided. The two-section support leg (2) is telescopically disposed within the basic support leg (1), the three-section support leg (3) is telescopically disposed within the two-section support leg (2), and the folding support leg is installed at the outer end of the three-section support leg (3). The telescopic drive mechanism includes: a horizontal hydraulic cylinder (4), a pulley (5), and a wire rope (6). The horizontal hydraulic cylinder (4) is installed inside the basic support leg (1), the second-section support leg (2), and the third-section support leg (3). The piston rod end of the horizontal hydraulic cylinder (4) is fixedly connected to the base plate of the basic support leg (1). The cylinder body of the horizontal hydraulic cylinder (4) is fixedly connected to the base plate of the second-section support leg (2). The pulley (5) is fixedly installed outside the second-section support leg (2). One end of the wire rope (6) is fixedly connected to the outer wall of the basic support leg (1), and the other end of the wire rope (6) passes around the pulley (5) and is fixedly connected to the base plate of the third-section support leg (3).
2. The foldable multi-stage telescopic outrigger structure for aerial work platforms according to claim 1, characterized in that, The folding outrigger includes: a fixed frame (7), a supporting hydraulic cylinder (8), a supporting rotating rod (9), and a supporting chassis (10). The fixed frame (7) is fixed on the three-section outrigger (3). The top end of the supporting rotating rod (9) is rotatably connected to one end of the fixed frame (7). The cylinder body of the supporting hydraulic cylinder (8) is rotatably connected to the other end of the fixed frame (7). The bottom end of the supporting rotating rod (9) is rotatably connected to the supporting chassis (10). The piston rod of the supporting hydraulic cylinder (8) is rotatably connected to the supporting chassis (10).
3. The foldable multi-stage telescopic outrigger structure for aerial work platforms according to claim 2, characterized in that, It also includes a fixed connecting plate (11), on which the basic support leg (1) is fixedly installed, and the fixed connecting plate (11) has several threaded through holes.
4. The foldable multi-stage telescopic outrigger structure for aerial work platforms according to claim 1, characterized in that, The basic support leg (1) has a first stop (12) at its opening, and the second stop (13) is provided on the outer side of the middle part of the second support leg (2).
5. The foldable multi-stage telescopic outrigger structure for aerial work platforms according to claim 1, characterized in that, The lower outer end of the three-section support leg (3) is provided with a storage groove (14).