Counterweight device for an aerial work platform

Abstract

The embodiment of the utility model provides a counterweight device for aerial work platform relates to engineering machinery technical field. The utility model provides a counterweight device for aerial work platform includes counterweight, hydraulic protection cover, electrical protection cover and revolving stage, hydraulic protection cover can be detachably arranged in counterweight, and hydraulic protection cover and counterweight form first structure space together, electrical protection cover can be detachably arranged in counterweight, and electrical protection cover and counterweight form second structure space together, and hydraulic protection cover, electrical protection cover and counterweight jointly enclose installation cavity, and revolving stage is detachably connected in counterweight and is located in installation cavity. The utility model has improved the problem of time and energy consumption when the integral counterweight and shield are disassembled for overhauling hydraulic or electrical elements when the shield and the counterweight are integrally cast.

Description

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese Patent Application No. 2025216433459, filed on August 4, 2025, entitled "A Counterweight Device for Aerial Work Platforms", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This utility model relates to the field of engineering machinery technology, and more specifically, to a counterweight device for aerial work platforms. Background Technology

[0004] Aerial work platforms are platform-type equipment used to transport personnel, tools, and materials to high-altitude work positions. They are widely used in construction, maintenance, installation, cleaning, and other fields, significantly improving the efficiency and safety of high-altitude operations. Aerial work platforms generate significant tipping moments during boom extension and retraction. To ensure overall stability and prevent tipping, a counterweight is typically added to the rear of the platform to control its center of gravity. This counterweight is usually equipped with a protective cover to meet safety protection, functional assurance, and compliance requirements.

[0005] The inventors discovered that when the protective cover is cast as a single piece onto the counterweight, the counterweight and protective cover must be completely disassembled when repairing hydraulic or electrical components, which is time-consuming and labor-intensive. Utility Model Content

[0006] The purpose of this utility model is to provide a counterweight device for aerial work platforms, which can improve the problem of time-consuming and labor-intensive maintenance of hydraulic or electrical components.

[0007] The embodiments of this utility model can be implemented as follows: In a first aspect, this utility model provides a counterweight device for an aerial work platform, comprising: counterweight; A hydraulic protective cover is detachably mounted on the counterweight, and the hydraulic protective cover and the counterweight together form a first structural space. An electrical protective cover is detachably mounted on the counterweight. The electrical protective cover and the counterweight together form a second structural space. The hydraulic protective cover, the electrical protective cover, and the counterweight together form an installation cavity. The turntable is detachably connected to the counterweight and located within the mounting cavity.

[0008] In an optional embodiment, the counterweight has a U-shaped structure, and the hydraulic protective cover and the electrical protective cover are respectively disposed at the ends of the two arms of the counterweight.

[0009] In an optional embodiment, the counterweight has a U-shaped structure, one side of the turntable is detachably connected to the curved part of the counterweight, and the bottom of the turntable is detachably connected to the two arms of the counterweight.

[0010] In an optional embodiment, both the hydraulic protective cover and the electrical protective cover have a connecting part that fits into the counterweight, and the connecting part is provided with a threaded hole. The hydraulic protective cover and the electrical protective cover are detachably connected to the counterweight by bolts.

[0011] In an optional embodiment, the counterweight has an arc surface, the surface of the hydraulic protective cover is smoothly rounded, and there is a smooth transition between the hydraulic protective cover and the counterweight.

[0012] In an optional embodiment, the hydraulic protective cover is hinged with a door.

[0013] In an optional embodiment, the counterweight has an arc surface, the surface of the electrical protective cover is smoothly rounded, and there is a smooth transition between the electrical protective cover and the counterweight.

[0014] In an optional embodiment, the electrical protective cover has an operating hole that communicates with the second structural space.

[0015] In an optional embodiment, the hydraulic protective cover is provided with a first connector for detachable connection with the turntable.

[0016] In an optional embodiment, the electrical protective cover is provided with a second connector for detachable connection with the turntable.

[0017] The beneficial effects of the counterweight device for aerial work platforms provided in this embodiment of the invention include: The hydraulic and electrical protective covers are detachably mounted on the counterweight. When it is necessary to repair hydraulic components such as hydraulic valves or electrical components such as electrical control boxes, the hydraulic or electrical protective covers can be removed separately for repair without removing the counterweight. This improves upon the current method of casting the protective cover and counterweight as a single piece, which requires the entire counterweight to be removed during equipment maintenance, resulting in time-consuming and labor-intensive processes. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a first-view structural schematic diagram of the counterweight device for an aerial work platform provided in this embodiment; Figure 2 This is a structural schematic diagram of the counterweight device for an aerial work platform provided in this embodiment from a second perspective. Figure 3 This is a structural schematic diagram of the counterweight device for an aerial work platform provided in this embodiment from a third-person perspective. Figure 4 This is a structural schematic diagram of the counterweight device for an aerial work platform provided in this embodiment from a fourth-view perspective. Figure 5 This is a bottom view of the counterweight device for an aerial work platform provided in this embodiment.

[0020] Icons: 100-Counterweight; 110-Curved surface; 200-Hydraulic protective cover; 210-First structural space; 220-Box door; 230-First connector; 300-Electrical protective cover; 310-Second structural space; 320-Operating hole; 330-Second connector; 400-Turntable; 500-Connecting part; 510-Threaded hole. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0024] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0025] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0026] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0027] Aerial work platforms are platform-type equipment used to transport personnel, tools, and materials to high-altitude work positions. They are widely used in construction, maintenance, installation, cleaning, and other fields, significantly improving the efficiency and safety of high-altitude operations. During the boom's luffing and extension processes, aerial work platforms generate significant tipping moments. To ensure overall stability and prevent tipping, a counterweight is typically added to the rear of the platform to control its center of gravity. Furthermore, to meet requirements for counterweight safety, functional assurance, and compliance, a protective cover is usually installed on the counterweight.

[0028] Currently, the protective cover and counterweight are usually cast as a single piece, which results in low material utilization, large overall weight, complex casting process, high manufacturing cost, and the need to disassemble the entire protective cover and counterweight when repairing hydraulic or electrical components, which is time-consuming and labor-intensive.

[0029] To address the problem of time-consuming and labor-intensive equipment maintenance caused by the current integrated casting of protective covers and counterweights, this utility model provides a counterweight device for aerial work platforms. The following detailed description, through embodiments and accompanying drawings, outlines the overall structure, working principle, and technical effects of the counterweight device for aerial work platforms provided by this utility model.

[0030] Please refer to Figures 1-5 This utility model provides a counterweight device for aerial work platforms. Applied to aerial work platforms, it is used to add weight to control the platform's center of gravity and ensure its stability. Furthermore, the counterweight device provided by this utility model is not only applicable to aerial work platforms but also to other construction machinery requiring counterweights, such as cranes, excavators, and concrete pump trucks.

[0031] Please refer to Figures 1-3The counterweight device for aerial work platforms provided by this utility model includes a counterweight body 100, a hydraulic protective cover 200, an electrical protective cover 300, and a turntable 400. The hydraulic protective cover 200 and the electrical protective cover 300 are detachably mounted on opposite sides of the counterweight body 100. The hydraulic protective cover 200 and the counterweight body 100 together form a first structural space 210, which is used to install hydraulic valves and other hydraulic components. The electrical protective cover 300 and the counterweight body 100 together form a second structural space 310, which is used to install electrical components such as an electrical control box. Furthermore, the hydraulic protective cover 200, the electrical protective cover 300, and the counterweight body 100 form a U-shaped structure, which together enclose an installation cavity. The turntable 400 is detachably connected to the counterweight body 100 and is located within the installation cavity.

[0032] The hydraulic protective cover 200 and the electrical protective cover 300 are detachably mounted on the counterweight 100. When it is necessary to repair hydraulic components such as hydraulic valves or electrical components such as electrical control boxes, the hydraulic protective cover 200 or the electrical protective cover 300 can be removed separately for repair without removing the counterweight. This improves upon the current practice of casting the protective cover and counterweight as a single piece, which requires the entire counterweight to be removed during equipment maintenance, resulting in time-consuming and labor-intensive processes.

[0033] Please refer to Figures 2-4 In some optional embodiments, the counterweight 100 has a U-shaped wraparound structure and two arms. The hydraulic protective cover 200 and the electrical protective cover 300 are detachably installed at the ends of the two arms of the counterweight 100. Furthermore, combined with... Figure 5 The turntable 400 is installed inside the counterweight 100 via a U-shaped structure. One side of the turntable 400 is detachably connected to the U-shaped bend of the counterweight 100, and the bottom of the turntable 400 extends to abut against the bottom of the counterweight 100. Furthermore, both sides of the bottom of the turntable 400 are detachably connected to two support arms of the counterweight 100. The turntable 400 and the counterweight 100 are detachably connected through multiple connection points, improving the connection stability between them and thus enhancing the overall structural stability of the counterweight device.

[0034] In this embodiment, the turntable 400 and the counterweight 100 are detachably connected by bolts. In other embodiments, the turntable 400 and the counterweight 100 can also be detachably connected by a pin, a buckle, or other structure.

[0035] Please refer to Figure 2 and Figure 3In some optional embodiments, the hydraulic protective cover 200 and the electrical protective cover 300 have a connecting portion 500 of a certain width that fits against the counterweight 100. Multiple threaded holes 510 are provided on the connecting portion 500, allowing the hydraulic protective cover 200 and the electrical protective cover 300 to be detachably connected to the counterweight 100 by bolts. Furthermore, the connection point is located inside the hydraulic protective cover 200 and the electrical protective cover 300, ensuring a tight fit between the hydraulic protective cover 200 and the electrical protective cover 300 and the counterweight 100 while preventing bolt exposure, providing excellent dust and water protection, and also resulting in a more aesthetically pleasing appearance.

[0036] Please refer to Figure 1 and Figure 4 In some optional embodiments, the surface of the counterweight 100 has an arc surface 110, and the surface of the hydraulic protective cover 200 is smoothly rounded, so that when the hydraulic protective cover 200 is installed on the counterweight 100, there is a smooth transition between the hydraulic counterweight 100 and the hydraulic protective cover 200. Similarly, the surface of the electrical protective cover 300 is also smoothly rounded, and there is also a smooth transition between the electrical protective cover 300 and the counterweight 100. Thus, the overall appearance of the counterweight device is rounded and aesthetically pleasing.

[0037] Please refer to Figures 2-4 To further facilitate the maintenance of hydraulic and electrical components and improve the applicability of the counterweight device, in some optional embodiments, a door 220 is hinged to the hydraulic protective cover 200. The door 220 is hinged to the hydraulic protective cover 200 via a hinge mechanism. By opening and closing the door 220, the first structural space 210 can be directly opened, thus allowing maintenance of hydraulic valves and other components within the first structural space 210 without disassembling the hydraulic protective cover 200, improving operational convenience. Similarly, an operating hole 320 communicating with the second structural space 310 is provided on the electrical protective cover 300, allowing maintenance of electrical components within the second structural space 310 without disassembling the electrical protective cover 300.

[0038] In this embodiment, both the hydraulic protective cover 200 and the electrical protective cover 300 are made of Q355B high-strength steel by bending, reducing the complexity of the traditional integrated casting structure of the counterweight and the protective cover. This results in high structural strength, good corrosion resistance, and low cost. Furthermore, the lightweight design reduces the overall load on the machine while optimizing the overall weight distribution of the counterweight device, thus improving its performance.

[0039] Please refer to Figure 1To improve the overall integrity and structural stability of the counterweight device, in some optional embodiments, a first connecting member 230 for detachable connection with the turntable 400 is provided on the hydraulic protective cover 200, and a second connecting member 330 for detachable connection with the turntable 400 is provided on the electrical protective cover 300. Both the first connecting member 230 and the second connecting member 330 are plate-shaped structures. When the turntable 400 is connected to the counterweight 100, the first connecting member 230 and the second connecting member 330 respectively fit against the two sides of the turntable 400. Threaded holes 510 are provided on both the first connecting member 230 and the second connecting member 330. Bolts are used to detachably connect the first connecting member 230 to the turntable 400, and the second connecting member 330 to the turntable 400. This detachable connection of the hydraulic protective cover 200, the electrical protective cover 300, and the turntable 400 improves the connection stability of the turntable 400, thereby enhancing the overall structural stability of the counterweight device.

[0040] In summary, the implementation principle of the counterweight device for aerial work platforms provided by this utility model is as follows: the hydraulic protective cover 200 and the electrical protective cover 300 are detachably mounted on the counterweight body 100. When it is necessary to repair hydraulic components such as hydraulic valves or electrical components such as electrical control boxes, the hydraulic protective cover 200 or the electrical protective cover 300 can be removed separately, and the hydraulic and electrical components can be repaired without removing the counterweight. This improves upon the current method of casting the protective cover and counterweight as a single piece, which requires the entire counterweight to be removed during equipment maintenance, resulting in time-consuming and labor-intensive processes.

[0041] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A counterweight device for aerial work platforms, characterized in that, include: counterweight; A hydraulic protective cover is detachably mounted on the counterweight, and the hydraulic protective cover and the counterweight together form a first structural space; An electrical protective cover is detachably mounted on the counterweight. The electrical protective cover and the counterweight together form a second structural space. The hydraulic protective cover, the electrical protective cover, and the counterweight together form an installation cavity. The turntable is detachably connected to the counterweight and located within the mounting cavity.

2. The counterweight device for an aerial work platform according to claim 1, characterized in that, The counterweight has a U-shaped structure, and the hydraulic protective cover and the electrical protective cover are respectively located at the ends of the two arms of the counterweight.

3. The counterweight device for an aerial work platform according to claim 1, characterized in that, The counterweight has a U-shaped structure. One side of the turntable is detachably connected to the curved part of the counterweight, and the bottom of the turntable is detachably connected to the two arms of the counterweight.

4. The counterweight device for an aerial work platform according to claim 1, characterized in that, Both the hydraulic protective cover and the electrical protective cover have a connecting part that fits into the counterweight. The connecting part has a threaded hole. The hydraulic protective cover and the electrical protective cover are detachably connected to the counterweight by bolts.

5. The counterweight device for an aerial work platform according to claim 1, characterized in that, The counterweight has an arc surface, the surface of the hydraulic protective cover is smoothly rounded, and there is a smooth transition between the hydraulic protective cover and the counterweight.

6. The counterweight device for an aerial work platform according to claim 1, characterized in that, The hydraulic protective cover is hinged with a door.

7. The counterweight device for an aerial work platform according to claim 1, characterized in that, The counterweight has an arc surface, the surface of the electrical protective cover is smoothly rounded, and there is a smooth transition between the electrical protective cover and the counterweight.

8. The counterweight device for an aerial work platform according to claim 1, characterized in that, The electrical protective cover has an operating hole that communicates with the second structural space.

9. The counterweight device for an aerial work platform according to claim 1, characterized in that, The hydraulic protective cover is provided with a first connector for detachable connection with the turntable.

10. The counterweight device for an aerial work platform according to claim 1, characterized in that, The electrical protective cover is provided with a second connector for detachable connection with the turntable.

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