Counterweight structure for an electric stone loader

By using a separate arrangement and plug-in connection of counterweight components, the problem of the lack of an independent counterweight structure in electric stone forklifts is solved, enabling convenient installation and disassembly, enhancing the rear weight and space utilization of electric stone forklifts, and adapting to the needs of narrow spaces.

CN224591515UActive Publication Date: 2026-08-04XCMG CONSTRUCTION MACHINERY CO LTD SCIENCE & TECHNOLOGY BRANCH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
XCMG CONSTRUCTION MACHINERY CO LTD SCIENCE & TECHNOLOGY BRANCH
Filing Date
2025-08-28
Publication Date
2026-08-04

AI Technical Summary

Technical Problem

Existing electric stone forklifts lack independent counterweight structures. The weight of a single battery pack cannot meet the requirements of stone forklifts, and traditional counterweight installation methods are complex and cumbersome, affecting battery pack layout and loader space utilization.

Method used

The counterweight components are arranged separately, and can be easily assembled and disassembled through connecting components and lifting structures. Utilizing a unique plug-in connection method, combined with the frame components and counterweight components, it can adapt to the narrow space at the rear of the electric loader frame, ensuring that the battery pack layout and the loader's departure angle are not affected.

Benefits of technology

It enables quick and convenient installation and disassembly of the counterweight components, optimizes the assembly sequence of the loader, enhances the rear weight of the electric stone forklift, ensures overall aesthetics and space utilization, and adapts to the needs of narrow spaces.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a kind of counterweight structure of electric stone loader, including rack assembly, counterweight assembly, connecting component, rack assembly is installed on loader, counterweight assembly is installed on rack assembly by connecting component;The utility model adopts separate arrangement and simple and easy control connection, hoisting mode, through the coordination between rack assembly, counterweight assembly, connecting component realizes the portable assembly and disassembly of counterweight assembly, and effectively utilizes the lower space of rack assembly;Use unique profile structure and loader rear frame rear frame to stick together, do not affect loader departure angle, and ensure that overall appearance is beautiful, can better adapt to the narrow space of electric loader frame rear portion, its structure is simple, easy to operate, and can be expanded to other engineering vehicles.
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Description

Technical Field

[0001] This utility model relates to the field of engineering machinery technology, and in particular to a counterweight structure for an electric stone loader. Background Technology

[0002] With the rapid development of new energy technologies, the variety of electric loaders is becoming increasingly diverse. For existing electric loaders, due to the weight and volume of the battery, the battery pack is typically placed inside the rear frame of the chassis to act as a counterweight. Therefore, most electric loaders do not have an independent counterweight structure. However, for electric stone forklifts, due to the special working conditions of forking stone, the weight of a single battery pack is insufficient to meet the counterweight requirements. Therefore, a counterweight structure for electric stone forklifts is necessary. This structure should be compatible with the existing electric loader structure, adding rear weight without affecting the battery pack layout and installation. It should also better accommodate the narrow space at the rear of the electric loader chassis, ensuring a safe departure angle during operation, and facilitating installation and disassembly. Utility Model Content

[0003] To address the problems existing in the prior art, this utility model provides a counterweight structure for an electric stone loader. While adapting to the existing overall structure of electric loaders, it adopts a separate arrangement and a simple and easy-to-control connection and hoisting structure to achieve convenient assembly and disassembly of the counterweight components, and better adapts to the narrow space at the rear of the electric loader frame.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solution: a counterweight structure for an electric stone loader, which specifically includes a frame assembly, a counterweight assembly, and a connecting assembly. The frame assembly is mounted on the loader, and the counterweight assembly is mounted on the frame assembly through the connecting assembly.

[0005] Furthermore, the frame assembly includes a frame support portion and a fixed connection portion. The frame support portion is a rear frame located on the rear frame of the loader. The rear frame is connected to the rear frame, contains a battery, has a protective plate at the bottom, and has rectangular slots on the bottom surface of the protective plate. Mounting holes are also provided on the side plates on the left and right sides of the rear frame. The fixed connection portion mainly consists of lifting holes located at the four ends of the bottom of the rear frame, used to install and fix the counterweight components.

[0006] Furthermore, the counterweight assembly includes a counterweight body, a connecting structure, and a lifting structure. The counterweight body is the main load-bearing part of the counterweight assembly and is filled with a filling material. The connecting structure consists of four protruding mounting holes and is fixed to the surface of the counterweight body, connecting with the lifting holes in the frame assembly through the protruding mounting holes. The lifting structure consists of four mounting lugs, welded to the left and right sides of the counterweight body, and is used for lifting, enabling convenient assembly and disassembly of the counterweight assembly.

[0007] Furthermore, the connecting assembly includes four connecting pins, each connecting pin including a pin shaft body and a fixing hole provided on the pin shaft body. The pin shaft is used to fix the frame assembly and the counterweight assembly, and the fixing hole is fixed to the counterweight assembly with bolts.

[0008] Furthermore, the counterweight assembly is installed separately, using a bottom-to-top plug-in connection method. Through the connecting structure and lifting structure in the connecting component and the counterweight assembly, the counterweight is hoisted to the bottom of the rear frame of the loader's rear chassis. Unlike the traditional complex and cumbersome counterweight installation method, the unique plug-in connection method allows for quick and convenient installation and disassembly of the counterweight assembly. The counterweight assembly is installed in the bottom space of the rear battery frame of the rear chassis. The bottom-to-top plug-in connection method takes into account both the existing overall structure of the electric loader and the space utilization and ease of assembly. Furthermore, the unique plug-in connection method adopted by the counterweight component can optimize the assembly sequence of the loader, allowing the counterweight component to be installed at any stage after the rear battery frame is installed; the installation of the counterweight component does not affect the departure angle of the loader; the overall structure of the counterweight component is a trapezoidal structure, with the trapezoidal slope parallel to the bottom slope of the rear frame of the rear vehicle, and the plane containing the slope of the counterweight component is located inside the bottom slope of the rear frame of the rear vehicle, within the departure angle range of the electric stone forklift; the overall shape of the counterweight component fits snugly with the shape of the rear frame of the rear vehicle, exhibiting integrity, and the overall structure is not obtrusive and fits snugly.

[0009] Working principle: The counterweight assembly exists in two states during the loader's life cycle: installation and disassembly. When the counterweight assembly needs to be installed, the lifting equipment lifts the counterweight assembly using the lifting lugs on both sides and moves it until the four protruding mounting holes of the counterweight assembly's connecting structure align with the lifting holes of the frame assembly's fixed connection part. Then, the connecting pin in the connecting assembly is passed through and secured. When the counterweight assembly needs to be disassembled, the lifting equipment is connected to the lifting lugs on both sides of the counterweight assembly, the counterweight assembly is gently lifted, the connecting pin in the connecting assembly is removed, and the counterweight assembly is moved to the designated position using the lifting equipment.

[0010] The beneficial effects are as follows: This utility model provides a counterweight structure for an electric stone loader, which has the following beneficial effects: (1) This utility model provides a counterweight structure for an electric stone loader. By adopting a separate arrangement and a simple and easy-to-control connection and hoisting method, the counterweight component can be conveniently assembled and disassembled through the coordination between the frame component, the counterweight component, and the connecting component. This facilitates personnel getting on and off the vehicle and effectively utilizes the space under the frame component. (2) This utility model provides a counterweight structure for an electric stone loader. It uses a unique shape structure and fits together with the rear frame of the loader's rear vehicle frame. It does not affect the departure angle of the loader and ensures the overall aesthetics. It can better adapt to the narrow space at the rear of the electric loader's frame. Its structure is simple and easy to operate. It can be extended to other engineering vehicles. (3) This utility model provides a counterweight structure for an electric stone loader, which can increase the rear weight of the electric stone forklift without affecting the layout and installation of the battery pack, while adapting to the existing overall structure of the electric loader. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of an electric stone forklift. Figure 2 A schematic diagram of the overall structure of the counterweight structure for an electric stone forklift. Figure 3 A schematic diagram of the counterweight structure of an electric stone forklift in its installation state. Figure 4 A schematic diagram of the counterweight structure of an electric stone forklift in disassembly mode; Figure 5 A schematic diagram showing the departure angle of the counterweight structure and the overall departure angle of the electric stone forklift. Key reference numerals: Frame assembly 1, frame support part 101, fixed connection part 102, counterweight assembly 2, counterweight body 201, connection structure 202, lifting structure 203, connection assembly 3, connecting pin 301 Detailed Implementation

[0012] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0013] like Figure 1-5 As shown, this utility model provides a counterweight structure for an electric stone loader, which specifically includes a frame assembly 1, a counterweight assembly 2, and a connecting assembly 3; the frame assembly 1 is installed on the loader, and the counterweight assembly 2 is installed on the frame assembly 1 through the connecting assembly 3.

[0014] The frame assembly is the main body, including the frame support part 101 and the fixed connection part 102. The frame support part 101 is the rear frame of the loader's rear frame. The rear frame is connected to the rear frame and contains the battery. It has a protective plate at the bottom with rectangular slots on the bottom surface of the protective plate. Mounting holes are also provided on the left and right side plates of the rear frame of the rear frame. The fixed connection part 102 mainly consists of lifting holes located at the four ends of the bottom of the rear frame, which are used to install and fix the counterweight assembly 2.

[0015] The counterweight assembly consists of three parts: the counterweight body 201, the connecting structure 202, and the lifting structure 203. The counterweight body 201 is the main load-bearing part of the counterweight assembly 2, and its interior is filled with filler. The connecting structure 202 consists of four protruding mounting holes, which are fixed to the surface of the counterweight body 201 and connected to the rear frame of the loader's rear chassis through the protruding mounting holes. The lifting structure 203 consists of four mounting lugs, which are welded to the left and right sides of the counterweight body 201. The counterweight assembly is lifted by the lifting structure, enabling convenient assembly and disassembly.

[0016] The connecting component 3 includes four connecting pins 301. Each connecting pin 301 includes a pin body and a fixing hole provided on the pin body. The pin body is used to fix the frame assembly 1 and the counterweight assembly 2. The fixing hole is fixed to the fixing block on the surface of the counterweight assembly 2 with bolts to fix the pin body. The convenient assembly and disassembly of the counterweight assembly 2 can be achieved through the coordinated cooperation between the frame assembly 1, the counterweight assembly 2, and the connecting component 3.

[0017] The filling material inside the counterweight body 201 can be iron filings, concrete, or sand.

[0018] Preferably, the counterweight component 2 is installed separately, using a bottom-up plug-in connection method. The counterweight component 2 is hoisted to the bottom of the rear frame of the loader's rear chassis through the connecting component 3 and the connecting structure 202 and the hoisting structure 203 in the counterweight component 2. Unlike the traditional complex and cumbersome counterweight installation method, the unique plug-in connection method can realize the quick and convenient installation and disassembly of the counterweight component 2.

[0019] The rear frame of the counterweight component 2 is the rear battery frame on the rear frame. This structure is the existing structure of the loader, except that the structure for installing the counterweight component 2 is added to this structure. The counterweight component 2 is installed at the bottom of the rear battery frame. The counterweight component is installed on the frame component through a bottom-to-top plug-in connection method. This takes into account both the existing overall structure of the electric loader and the space utilization and ease of assembly.

[0020] Preferably, the unique plug-in connection method adopted by the counterweight component 2 can optimize the assembly sequence of the loader, allowing the counterweight component 2 to be installed at any stage after the rear battery frame is installed; the installation of the counterweight component 2 does not affect the loader's departure angle; the overall structure of the counterweight component 2 is a trapezoidal structure, with the trapezoidal inclined surface (line I, Figure 4 As shown, the counterweight component 2 is parallel to the bottom slope (line II) of the rear frame of the rear vehicle, and the slope (line I) of the counterweight component 2 is located inside the bottom slope (line II) of the rear frame of the rear vehicle, within the departure angle range of the electric stone forklift; the installation of the counterweight component 2 does not affect the departure angle of the loader; the overall structure of the counterweight component 2 is a trapezoidal structure, the trapezoidal slope is parallel to the bottom slope of the rear frame of the rear vehicle, and the plane where the counterweight component slope is located is inside the bottom slope of the rear frame of the rear vehicle, within the departure angle range of the electric stone forklift; the overall shape of the counterweight component 2 fits together with the shape of the rear frame of the rear vehicle, has integrity, and the overall structure is not abrupt and fits together.

[0021] The specific working principle of this utility model device is as follows: the counterweight component 2 has two states during the life cycle of the loader: installation and disassembly. When the counterweight component 2 needs to be installed, the lifting equipment lifts the counterweight component 2 through the lifting lugs on both sides of the counterweight component 2 and moves it until the four protruding mounting holes of the connecting structure of the counterweight component 2 coincide with the lifting holes of the fixed connection part 101 of the frame component 1. Then, the connecting pin 301 in the connecting component 3 is passed through, and bolts are used to pass through the fixing holes in the connecting pin 301 and connect to the fixing block on the surface of the counterweight component 2 for fixation. When the counterweight component 2 needs to be disassembled, the lifting equipment is connected to the lifting lugs on both sides of the counterweight component 2, the counterweight component 2 is gently lifted, the connecting pin 301 in the connecting component 3 is removed, and the counterweight component 2 is moved to the designated position using the lifting equipment.

[0022] The embodiments described above are merely preferred embodiments of the present utility model. Any modifications and improvements to the technical solutions of the present utility model without departing from the design concept of the present utility model shall fall within the protection scope defined by the present utility model.

Claims

1. A counterweight structure for an electric stone loader, characterized in that: include: The frame assembly, counterweight assembly, and connecting assembly are included. The frame assembly is mounted on the loader, and the counterweight assembly is mounted on the frame assembly via the connecting assembly. The frame assembly includes a frame support section and a fixed connection section. The frame support section is a rear frame located on the rear frame of the loader. The rear frame is connected to the rear frame, contains a battery, and has a protective plate at the bottom. The bottom surface of the protective plate has rectangular slots, and the side plates on the left and right sides of the rear frame have mounting holes. The fixed connection section mainly consists of lifting holes located at the four ends of the bottom of the rear frame, used to install and fix the counterweight components. The counterweight assembly includes a counterweight body, a connecting structure, and a lifting structure. The counterweight body is the main load-bearing part of the counterweight assembly and is filled with a filling material. The connecting structure consists of four protruding mounting holes and is fixed to the surface of the counterweight body, connecting to the lifting holes in the frame assembly through the protruding mounting holes. The lifting structure consists of four lifting lugs, welded to the left and right sides of the counterweight body, and is used for lifting, enabling convenient assembly and disassembly of the counterweight assembly.

2. The counterweight structure of an electric stone loader according to claim 1, characterized in that, The connecting assembly includes four connecting pins, each connecting pin having a pin shaft body and a fixing hole provided on the pin shaft body. The pin shaft is used to fix the frame assembly and the counterweight assembly, and the fixing hole is used to install and fix the counterweight assembly with bolts.

3. The counterweight structure of an electric stone loader according to claim 2, characterized in that, The counterweight assembly is installed separately and uses a bottom-up plug-in connection method. The counterweight assembly is hoisted to the bottom of the rear frame of the loader's rear chassis through the connecting structure and hoisting structure in the connecting component and the counterweight assembly.

4. The counterweight structure of an electric stone loader according to claim 2, characterized in that, The rear frame is the rear battery frame on the rear vehicle frame. The counterweight assembly is installed at the bottom of the rear battery frame and is installed on the frame assembly through a bottom-to-top plug-in connection.

5. The counterweight structure of an electric stone loader according to claim 2, characterized in that, The counterweight assembly has a trapezoidal structure, with its trapezoidal inclined surface parallel to the bottom inclined surface of the rear frame of the rear vehicle. The plane containing the trapezoidal inclined surface of the counterweight assembly is located inside the bottom inclined surface of the rear frame of the rear vehicle, within the departure angle range of the electric stone loader.

6. The counterweight structure of an electric stone loader according to claim 2, characterized in that, The overall shape of the counterweight assembly fits snugly against the shape of the rear frame of the rear vehicle.