A protected work platform of an aerial work platform

Abstract

This utility model discloses a protective working platform for an aerial work platform, relating to the field of aerial work equipment technology. The utility model includes a lifting device with a drive linkage at its top. An operating platform is mounted at the top of the drive linkage, and a protective mechanism is provided at the bottom of the operating platform for side protection. The protective mechanism includes an anti-collision component comprising four evenly distributed movable frames at the bottom of the operating platform. When a collision occurs on the side of the operating platform, a rotatable impact roller first contacts the obstacle, converting part of the impact force into kinetic energy through rolling friction. Subsequently, the impact force pushes a connecting block to compress a buffer spring. Simultaneously, the connecting block drives a sliding rod to slide within a limiting cylinder and compress a return spring, allowing the buffer spring and return spring to act as a buffer, effectively protecting the structural stability of the operating platform and the safety of personnel working above.

Description

Technical Field

[0001] This utility model relates to the field of aerial work equipment technology, specifically a protective working platform for an aerial work vehicle. Background Technology

[0002] Aerial work platforms, as an important type of engineering machinery, are widely used in high-altitude operations in various fields such as construction, municipal engineering, and power. The operating platform is the core carrier for workers to carry out high-altitude operations, and its safety and convenience are directly related to the safety of workers and work efficiency.

[0003] Referring to the patent document: Patent Publication No. CN219792431U, Patent Publication Date 2023-10-03, a working platform for an aerial work vehicle and an aerial work vehicle are disclosed, including: an installation component for connecting with the boom of the aerial work vehicle, which is provided with a fixing pin and a insertion hole; a platform body for being hooked to the installation component and provided with a positioning hole for the fixing pin to pass through; and a connector for inserting into the connector after the fixing pin passes through the positioning hole. The working platform for the aerial work vehicle has a detachable platform body, and the platform body is fixed to the installation component by hooking the platform body to the installation component and by inserting the connector into the connector hole. This makes the disassembly of the platform body very convenient, allowing it to be disassembled anytime and anywhere without the need for tools. Therefore, it facilitates the transportation and movement of the aerial work vehicle, bringing many conveniences to its use.

[0004] Based on the search of patent numbers and the shortcomings of existing technologies, the following was found:

[0005] During the operation of aerial work platforms, traditional operating platforms usually rely solely on fixed guardrails for basic protection, lacking active buffer structures for side collisions. When the platform moves or operates at height, if it accidentally collides with objects such as building walls, tower crane supports, or power transmission towers, the resulting impact force will be directly transmitted to the platform body. This can easily lead to platform structural deformation and component damage, and may also cause the platform to shake or even tilt, posing a serious threat to the personal safety of personnel working on the platform.

[0006] Therefore, this utility model provides a protective working platform for an aerial work vehicle. Utility Model Content

[0007] To address the problem that traditional aerial work platforms, which rely solely on fixed side railings, are prone to rigid impacts during side collisions, leading to structural damage and directly endangering worker safety, this invention aims to provide a protective working platform for aerial work vehicles.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a protective working platform for an aerial work platform, comprising a lifting device, a drive linkage at the top of the lifting device, an operating platform mounted at the top of the drive linkage, and a protective mechanism at the bottom of the operating platform for side protection. The protective mechanism includes:

[0009] The anti-collision assembly includes four evenly distributed movable frames set at the bottom of the operating platform. A set of limiting cylinders is movably installed in the middle of each of the four movable frames. A sliding rod is slidably locked in the middle of the middle of each set of limiting cylinders. Two symmetrically distributed buffer springs are fixedly installed in the middle of one side of each of the four movable frames. A connecting block is fixedly installed in the middle of one side of each buffer spring. An impact roller is set in the middle of the opposite side of every two connecting blocks. One end of each sliding rod is movably installed in the middle of one side of the connecting block. A return spring is fixedly installed in the middle of one side of each sliding rod. The other end of each return spring is fixedly installed in the middle of one side of the limiting cylinder.

[0010] The adjustment component, located at the bottom center of the operating platform, is used to adjust the position of the impact roller.

[0011] Preferably, the adjustment assembly includes a mounting frame fixedly installed at the bottom center of the operating platform, and two bidirectional cylinders arranged in a cross-shaped staggered pattern are fixedly installed at the top of the mounting frame. The two drive ends of the two bidirectional cylinders are fixedly installed at the center of one side of the movable frame.

[0012] Preferably, both ends of each impact roller are rotatably mounted on the middle of one side of the connecting block, and the outer peripheral wall of each impact roller is wrapped with an elastic buffer layer with a thickness of 5 to 10 mm, and the elastic buffer layer is made of polyurethane material.

[0013] Preferably, each set of limiting cylinders has multiple evenly distributed grooves on its outer side, and the multiple grooves are used to stabilize the atmospheric pressure inside the limiting cylinder.

[0014] Preferably, two symmetrically distributed telescopic rods are fixedly installed on the middle of one side of each of the four movable frames, and the other end of each telescopic rod is fixedly installed on the middle of one side of the connecting block.

[0015] Preferably, the bottom of the operating platform is fixedly installed with four sets of evenly distributed limiting rods, and the upper parts of the four movable frames are slidably locked onto the upper parts of the limiting rods.

[0016] Beneficial effects

[0017] This utility model provides a protective working platform for an aerial work platform. Compared with the prior art, it has the following advantages:

[0018] 1. When a collision occurs on the side of the operating platform, the rotatable impact roller first contacts the obstacle and converts part of the impact force into kinetic energy through rolling friction. Subsequently, the impact force pushes the connecting block to compress the buffer spring. At the same time, the connecting block drives the sliding rod to slide in the limit cylinder and compress the reset spring, so that it can be buffered by the spring force of the buffer spring and the reset spring, effectively protecting the structural stability of the operating platform and the safety of the personnel working above.

[0019] 2. During high-altitude operations, the piston rod of the bidirectional cylinder extends, pushing the moving frame to slide outward along the limit rod, so that the anti-collision component is fully deployed to the outside of the platform, forming a protective area around the perimeter. After the operation is completed, the piston rod of the bidirectional cylinder retracts, pulling the entire anti-collision component to retract inward synchronously, so that it is completely stored within the outline of the bottom of the operating platform. This significantly reduces the overall width of the equipment when it is moved or parked, greatly improving its passability and storage convenience in narrow and complex spaces, while avoiding accidental scratches that may be caused by the protruding structure. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Figure 2 This is a schematic diagram of the protective mechanism structure of this utility model.

[0022] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle.

[0023] Figure 4 This is a schematic diagram of the anti-collision component structure of this utility model.

[0024] Figure 5 This is a partial cross-sectional structural diagram of the present invention.

[0025] In the diagram: 1. Lifting device; 11. Drive linkage; 12. Operating platform; 2. Protective mechanism; 21. Anti-collision component; 211. Moving frame; 212. Impact roller; 213. Limiting cylinder; 2131. Tank; 214. Connecting block; 215. Sliding rod; 2151. Return spring; 216. Buffer spring; 2161. Telescopic rod; 217. Limiting rod; 22. Adjusting component; 221. Two-way cylinder; 222. Mounting frame. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-5 This utility model provides a technical solution: a protective working platform for an aerial work vehicle, including a lifting device 1, a drive linkage 11 at the top of the lifting device 1, an operating platform 12 mounted at the top of the drive linkage 11, and a protective mechanism 2 at the bottom of the operating platform 12 for protecting the sides of the operating platform 12. The protective mechanism 2 includes:

[0028] The anti-collision assembly 21 includes four evenly distributed movable frames 211 disposed at the bottom of the operating platform 12. A set of limiting cylinders 213 is movably installed in the middle of each of the four movable frames 211. A sliding rod 215 is slidably engaged in the middle of the middle of each set of limiting cylinders 213. Two symmetrically distributed buffer springs 216 are fixedly installed in the middle of one side of each of the four movable frames 211. A connecting block 214 is fixedly installed in one side of each buffer spring 216. An impact roller 212 is provided in the middle of the opposite side of every two connecting blocks 214. One end of each sliding rod 215 is movably installed in the middle of one side of a connecting block 214. A return spring 2151 is fixedly installed in one side of each sliding rod 215. The other end of 2151 is fixedly installed in the middle of one side of the limiting cylinder 213. When the operating platform 12 is protected from side impact, the impact roller 212 will first contact the object, causing it to retract backward upon impact. At this time, under the action of the buffer spring 216 behind, the impact roller 212 will be subjected to the elastic force of the buffer spring 216 as it moves backward, thus buffering it. At the same time, under the action of the sliding rod 215, the two limiting cylinders 213 will deflect, and the sliding rod 215 will slide within its limiting cylinder 213, causing the return spring 2151 to be squeezed. The elastic tension of the return spring 2151 can further buffer and absorb the impact force received by the impact roller 212.

[0029] Adjustment component 22 is located at the bottom center of operating platform 12 and is used to adjust the position of impact roller 212.

[0030] The adjustment assembly 22 includes a mounting bracket 222 fixedly installed at the bottom center of the operating platform 12. Two bidirectional cylinders 221 are fixedly installed at the top of the mounting bracket 222 in a cross-shaped arrangement. The two drive ends of the two bidirectional cylinders 221 are fixedly installed at the center of one side of the movable frame 211. Driven by the bidirectional cylinders 221, the anti-collision assembly 21 can be moved to the relative position of the operating platform 12. When the operating platform 12 is lowered to the lowest point by the drive linkage 11, the anti-collision assembly 21 is retracted, so that when it is not in use, the anti-collision assembly 21 does not extend out of the outside of the operating platform 12 and occupy more space.

[0031] Both ends of each impact roller 212 are rotatably mounted on the middle of one side of the connecting block 214. The outer peripheral wall of each impact roller 212 is covered with an elastic buffer layer with a thickness of 5-10mm. The elastic buffer layer is made of polyurethane material and has a honeycomb pore structure inside, which can improve the buffer energy absorption efficiency by 25%. Since the impact roller 212 is rotatably mounted on the connecting block 214, it can absorb and dissipate part of the impact force by rotating downward when it is impacted, thereby reducing the force of the buffer spring 216 and the return spring 2151.

[0032] Each set of limiting cylinders 213 has multiple evenly distributed grooves 2131 on its outer side. The opening of multiple grooves 2131 is used to stabilize the atmospheric pressure inside the limiting cylinder 213, thereby ensuring that its sliding rod 215 can move stably inside the limiting cylinder 213. The impact force of the impact roller 212 is buffered by squeezing the return spring 2151.

[0033] Two symmetrically distributed telescopic rods 2161 are fixedly installed on the middle of one side of each of the four movable frames 211. The other end of each telescopic rod 2161 is fixedly installed on the middle of one side of the connecting block 214. The telescopic rods 2161 can guide the movement of the impact roller 212, so that it can always be perpendicular to the buffer spring 216, ensuring that the buffer spring 216 is subjected to uniform force, and at the same time, preventing the impact roller 212 from moving excessively, which would cause irreversible deformation of the buffer spring 216 and the return spring 2151.

[0034] Four sets of evenly distributed limiting rods 217 are fixedly installed at the bottom of the operating platform 12. The upper parts of the four moving frames 211 are slidably locked on the upper part of the limiting rods 217. By installing the moving frames 211 on their limiting rods 217, the movement of the moving frames 211 can be guided, and the moving frames 211 can be supported and fixed.

[0035] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0036] During operation, when the operating platform 12 is lifted to a high altitude by the lifting device 1 for work, the operator controls the two bidirectional cylinders 221 installed at the bottom center of the operating platform 12 to move. The piston rods of the bidirectional cylinders 221 extend outward, pushing the four moving frames 211 to move outward along the guide of the limit rod 217 to the four sides of the operating platform 12 until the anti-collision components 21 completely extend beyond the platform outline, forming an effective side protection area.

[0037] When the side of the work platform is about to collide with an external building or other object, the impact roller 212 will make contact with it first. The impact roller 212 itself is rotated and, during a scraping collision, its rolling action can convert part of the lateral impact force into rotational kinetic energy, achieving the effect of frictional force relief and reducing the impact on the buffer system. The two ends of the impact roller 212 are connected to the buffer spring 216 and the telescopic rod 2161 through the connecting block 214. The collision force will push the connecting block 214 to move backward (towards the center of the platform), thereby compressing the buffer spring 216. The elastic deformation of the spring absorbs and buffers most of the initial impact energy. The telescopic rod 2161 plays a guiding and supporting role in this process, ensuring that the buffer spring 216 is compressed vertically to prevent instability and excessive deformation.

[0038] As the connecting block 214 moves backward, it pushes the sliding rod 215 hinged to it. The sliding rod 215 slides within the limiting cylinder 213, compressing the return spring 2151 inside. The further compression of the return spring 2151 provides further buffering for the impact roller 212, absorbing the remaining impact energy again. The groove 2131 on the outside of the limiting cylinder 213 is used to maintain the air pressure balance inside and outside the cylinder, ensuring that the sliding rod 215 can slide smoothly and guaranteeing the timeliness of the buffer response.

[0039] When the high-altitude operation is completed, the lifting device 1 drives the drive linkage 11 to lower the operating platform 12 to the lowest position for transfer or parking. The bidirectional cylinder 221 pulls the four moving frames 211 and their anti-collision components 21 along the limit rod 217 to retract towards the center of the platform, so that all the anti-collision components 21 are stored within the projection range below the operating platform 12. This avoids the anti-collision components 21 protruding on the outside of the platform, significantly reduces the overall width of the equipment, facilitates movement and storage, and effectively prevents scratches in narrow spaces.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A protective working platform for an aerial work vehicle, comprising a lifting device (1), characterized in that: A drive link (11) is provided at the top of the lifting device (1), and an operating platform (12) is installed at the top of the drive link (11). A protective mechanism (2) is provided at the bottom of the operating platform (12) for protecting the side of the operating platform (12). The protective mechanism (2) includes: The anti-collision assembly (21) includes four evenly distributed movable frames (211) set at the bottom of the operating platform (12). A set of limiting cylinders (213) is movably installed in the middle of each of the four movable frames (211). A sliding rod (215) is slidably attached in the middle of each set of limiting cylinders (213). Two symmetrically distributed buffer springs (216) are fixedly installed in the middle of one side of each of the four movable frames (211). A connecting block (214) is fixedly installed in one side of each buffer spring (216). An impact roller (212) is provided in the middle of the opposite side of each pair of connecting blocks (214). One end of each sliding rod (215) is movably installed in the middle of one side of the connecting block (214). A return spring (2151) is fixedly installed in one side of each sliding rod (215). The other end of each return spring (2151) is fixedly installed in the middle of one side of the limiting cylinder (213). An adjustment component (22) is located at the bottom center of the operating platform (12) and is used to adjust the position of the impact roller (212).

2. The protective working platform of an aerial work vehicle according to claim 1, characterized in that: The adjustment assembly (22) includes a mounting bracket (222) that is fixedly installed at the bottom center of the operating platform (12).

3. The protective working platform of an aerial work vehicle according to claim 2, characterized in that: The top of the mounting bracket (222) is fixedly mounted with two bidirectional cylinders (221) arranged in a cross-shaped staggered pattern. The two drive ends of the two bidirectional cylinders (221) are fixedly mounted on the middle of one side of the movable frame (211).

4. The protective working platform of an aerial work vehicle according to claim 1, characterized in that: Both ends of each of the impact rollers (212) are rotatably mounted on the middle of one side of the connecting block (214).

5. The protective working platform of an aerial work vehicle according to claim 4, characterized in that: Each of the impact rollers (212) has an outer peripheral wall covered with an elastic buffer layer with a thickness of 5 to 10 mm, and the elastic buffer layer is made of polyurethane material.

6. The protective working platform of an aerial work vehicle according to claim 1, characterized in that: Each of the limiting cylinders (213) has multiple evenly distributed grooves (2131) on its outer side.

7. The protective working platform of an aerial work vehicle according to claim 6, characterized in that: The opening of the plurality of the grooves (2131) is used to stabilize the atmospheric pressure inside the limiting cylinder (213).

8. The protective working platform of an aerial work vehicle according to claim 1, characterized in that: Two symmetrically distributed telescopic rods (2161) are fixedly installed on the middle of one side of each of the four movable frames (211), and the other end of each telescopic rod (2161) is fixedly installed on the middle of one side of the connecting block (214).

9. The protective working platform of an aerial work vehicle according to claim 1, characterized in that: Four sets of evenly distributed limiting rods (217) are fixedly installed at the bottom of the operating platform (12).

10. The protective working platform of an aerial work vehicle according to claim 9, characterized in that: The upper parts of the four movable frames (211) are all slidably locked onto the upper part of the limiting rod (217).

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