A concealed counterweight hoisting structure
By incorporating a concealed counterweight lifting structure with four-point lifting plates and drainage holes, the stability and exposure issues of traditional excavator lifting structures are resolved, thereby improving the safety and aesthetics of lifting operations.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 潍柴(青岛)智慧重工有限公司
- Filing Date
- 2025-07-16
- Publication Date
- 2026-07-03
AI Technical Summary
Traditional excavator lifting operations suffer from poor stability and a tendency to tip over due to the inflexible design of the counterweight and lifting structure. Exposed structures are also easily damaged, affecting safety and aesthetics.
It adopts a concealed counterweight hoisting structure, adjusts the balance through four-point hoisting plates, and is equipped with hoisting cover plates and drainage holes. Full welding connection is used to improve stability and avoid water accumulation damage.
It achieves balance and safety during hoisting, avoids damage caused by exposure, and improves the service life and appearance of the equipment.
Smart Images
Figure CN224449972U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of counterweight components, specifically relating to a concealed counterweight hoisting structure. Background Technology
[0002] The statements in this section are merely background information related to this utility model and do not necessarily constitute prior art.
[0003] Traditional excavator lifting operations suffer from numerous drawbacks in their counterweight design and lifting structure. Firstly, existing counterweights are mostly two-point systems, unable to flexibly adjust their position and weight distribution according to the weight and shape of the load and the working conditions. This results in poor overall excavator stability during lifting operations, increasing the risk of tipping over. Especially when lifting heavy or irregularly shaped objects, precise balancing is difficult, severely restricting the safety and efficiency of lifting operations. Secondly, conventional lifting structures are exposed, making them susceptible to damage from external impacts and corrosion when not in operation. This reduces the lifespan of components and disrupts the overall aesthetic harmony of the excavator, hindering applications in space-constrained scenarios or those with specific appearance requirements. Utility Model Content
[0004] To address the aforementioned problems, this utility model provides a concealed counterweight hoisting structure, which solves the issues of inconvenient device storage and poor sealing performance, resolves the problem that existing suction devices cannot achieve pressure monitoring, and also solves the problem that sputum is easily sucked into the negative pressure pump, causing damage to the negative pressure pump.
[0005] To achieve the above objectives, this utility model is implemented through the following technical solution:
[0006] This utility model provides a concealed counterweight hoisting structure, comprising: a counterweight body, the upper surface of which is provided with a first hoisting groove and a second hoisting groove; two first hoisting plates are provided in the first hoisting groove, and two second hoisting plates are provided in the second hoisting groove, with a predetermined spacing between the two first hoisting plates and a predetermined spacing between the two second hoisting plates, the two first hoisting plates and the two second hoisting plates being symmetrically arranged with respect to the vertical plane where the center of gravity of the counterweight body is located, so that the counterweight is in a balanced state during hoisting; both the first hoisting groove and the second hoisting groove are provided with hoisting cover plates.
[0007] As a further implementation, the first lifting plate is fixedly connected to the bottom and side surfaces of the first lifting slot by welding, and the second lifting plate is fixedly connected to the bottom and side surfaces of the second lifting slot by welding, using a full welding method.
[0008] As a further implementation, a drainage hole is provided between the bottom surface of the first lifting plate and the first lifting groove.
[0009] As a further implementation, drainage holes are also provided between the bottom surface of the second lifting plate and the second lifting groove.
[0010] As a further implementation, both the first and second lifting slots are rectangular, and the top surfaces of the first and second lifting slots are open structures, as are one end face of the first and second lifting slots.
[0011] As a further implementation, the bottom surfaces of the first and second lifting slots are both at a set angle to the top surface of the counterweight body, so that accumulated water can be drained through the drainage holes along the bottom surfaces of the first and second lifting slots to the outside of the counterweight body.
[0012] As a further implementation, multiple L-shaped brackets are provided on the top of the sidewalls of the first and second hoisting slots. Each L-shaped bracket consists of a vertical plate and a horizontal plate. The vertical plate is fixedly connected to the sidewall of the first or second hoisting slot, and the horizontal plate is connected to the hoisting cover plate by fasteners.
[0013] As a further implementation, the lifting cover is made of steel plate and the surface is treated with rust prevention.
[0014] As a further implementation, the counterweight body is a hollow box structure, and a counterweight medium can be injected into the box; a bearing plate is also provided in the box.
[0015] As a further implementation, the bottom ends of the first and second lifting plates are fixedly connected to the bearing plate by welding.
[0016] Compared with the prior art, the advantages and positive effects of this utility model are:
[0017] This utility model features two first lifting plates in the first lifting slot and two second lifting plates in the second lifting slot, enabling the counterweight body to be lifted at four points. The height difference between the front and rear of the counterweight can be adjusted by adjusting the lifting slings to ensure a stable landing on the platform and prevent damage to the paint surface of the counterweight due to tilting. A predetermined distance is maintained between the two first lifting plates and the two second lifting plates. The two first and two second lifting plates are symmetrically arranged with respect to the vertical plane containing the center of gravity of the counterweight body, ensuring the counterweight is in a balanced state during lifting. Both the first and second lifting slots are equipped with lifting covers to prevent exposed lifting points and potential safety hazards. Furthermore, when a walking passage is provided on the counterweight body of a heavy excavator, the risk of workers tripping while walking on the passage is eliminated.
[0018] The first lifting plate of this invention is fixedly connected to the bottom and side surfaces of the first lifting groove by welding, and the second lifting plate is fixedly connected to the bottom and side surfaces of the second lifting groove by welding. Full welding is used to improve the stability of the first and second lifting plates and to prevent deformation of the counterweight body shell when the first and second lifting plates bear heavy loads. The bottom ends of the first and second lifting plates are fixedly connected to the bearing plate by welding to ensure their load-bearing capacity. Drainage holes are provided between the bottom surfaces of the first and second lifting plates and the second lifting groove to drain water accumulated in the second lifting groove, preventing damage to the paint surface of the counterweight. The bottom surfaces of both the first and second lifting grooves form a set angle with the top surface of the counterweight body, facilitating the drainage of accumulated water through the drainage holes along the bottom surfaces of the first and second lifting grooves to the outside of the counterweight body. Attached Figure Description
[0019] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.
[0020] Figure 1 This is a diagram of the concealed counterweight hoisting structure of this utility model;
[0021] Figure 2 This is a partial side view of the concealed counterweight hoisting mechanism of this utility model;
[0022] Figure 3 This is a cross-sectional view of the concealed counterweight hoisting mechanism of this utility model.
[0023] In the diagram: 1. Counterweight body; 2. First lifting slot; 3. Second lifting slot; 4. First lifting plate; 5. Second lifting plate; 6. L-shaped bracket; 7. Lifting cover plate; 8. Fastener; 9. Drainage hole; 10. Bearing plate. Detailed Implementation
[0024] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.
[0025] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, unless otherwise expressly indicated by the present invention, the singular form is also intended to include the plural form. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0026] Example 1
[0027] This embodiment provides a concealed counterweight hoisting structure, such as Figures 1-3 As shown, it includes: a counterweight body 1, the upper surface of which is provided with a first lifting groove 2 and a second lifting groove 3; the first lifting groove 2 is provided with two first lifting plates 4, and the second lifting groove 3 is provided with two second lifting plates 5, so that the counterweight body 1 is lifted at four points. The height difference between the front and rear of the counterweight can be adjusted by adjusting the lifting slings to ensure that it lands stably on the platform surface and to avoid damage to the paint surface of the counterweight due to tilting. The two first lifting plates 4 are spaced at a predetermined distance, and the two second lifting plates 5 are spaced at a predetermined distance. The first lifting plate 4 and the two second lifting plates 5 are symmetrically arranged with respect to the vertical plane where the center of gravity of the counterweight body 1 is located, so that the counterweight is in a balanced state during lifting. The first lifting slot 2 and the second lifting slot 3 are both provided with lifting cover plates 7 to avoid the lifting points being exposed and causing safety hazards. Since the counterweight body 1 in this embodiment is used for excavators with a capacity of 200 tons or more, a walking passage is often provided on the counterweight body 1 in order to save space. If the lifting points are exposed, it will lead to the safety hazard of tripping when walking on the counterweight, and will also affect the overall aesthetics.
[0028] As a further implementation, the first lifting plate 4 is fixedly connected to the bottom and side surfaces of the first lifting groove 2 by welding, and the second lifting plate 5 is fixedly connected to the bottom and side surfaces of the second lifting groove 3 by welding. The full welding method is adopted to improve the stability of the first lifting plate 4 and the second lifting plate 5, and at the same time to avoid deformation of the shell of the counterweight body 1 when the first lifting plate 4 and the second lifting plate 5 bear heavy loads.
[0029] As a further implementation, a drainage hole 9 is provided between the bottom surface of the first lifting plate 4 and the first lifting groove 2 to drain the water accumulated in the first lifting groove 2 and avoid damage to the paint surface of the counterweight.
[0030] As a further implementation, a drainage hole 9 is also provided between the bottom surface of the second lifting plate 5 and the second lifting groove 3 to drain the water accumulated in the second lifting groove 3 and avoid damaging the paint surface of the counterweight.
[0031] As a further implementation, both the first hoisting slot 2 and the second hoisting slot 3 are rectangular, and the top surfaces of the first hoisting slot 2 and the second hoisting slot 3 are open structures to provide working space for the slings during hoisting. One end face of the first hoisting slot 2 and the second hoisting slot 3 is also an open structure to ensure that the water accumulated from the drain hole 9 can be discharged smoothly.
[0032] As a further implementation, the bottom surfaces of the first hoisting groove 2 and the second hoisting groove 3 are both at a set angle to the top surface of the counterweight body 1, so that accumulated water can be discharged to the outside of the counterweight body 1 through the drainage hole 9 along the bottom surfaces of the first hoisting groove 2 and the second hoisting groove 3.
[0033] As a further implementation, multiple L-shaped brackets 6 are provided on the top of the side walls of the first hoisting slot 2 and the second hoisting slot 3. Each L-shaped bracket 6 consists of a vertical plate and a horizontal plate. The vertical plate is fixedly connected to the side wall of the first hoisting slot 2 or the side wall of the second hoisting slot 3, and the horizontal plate is connected to the hoisting cover plate 7 by fasteners 8.
[0034] As a further implementation, the lifting cover plate 7 is made of steel plate and the surface is treated with rust prevention.
[0035] As a further implementation, the counterweight body 1 is a hollow box structure, into which a counterweight medium can be injected; the box is also provided with a bearing plate 10, which is used to connect the bearing frame of the counterweight body 1 and is connected to the first lifting plate 4 and the second lifting plate 5 respectively.
[0036] As a further implementation, the bottom ends of the first lifting plate 4 and the second lifting plate 5 are fixedly connected to the bearing plate 10 by welding.
[0037] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the scope of protection of the present utility model.
Claims
1. A concealed counterweight hoist structure, characterized by, include: The counterweight body has a first lifting slot and a second lifting slot on its upper surface. Two first lifting plates are provided in the first lifting slot, and two second lifting plates are provided in the second lifting slot. A predetermined distance is maintained between the two first lifting plates and between the two second lifting plates. The two first and two second lifting plates are symmetrically arranged with respect to the vertical plane containing the center of gravity of the counterweight body, ensuring the counterweight is in a balanced state during lifting. Both the first and second lifting slots are equipped with lifting cover plates.
2. A concealed counterweight hoist structure according to claim 1, wherein The first lifting plates are fixedly connected to the bottom and sides of the first lifting slot by welding, and the second lifting plates are fixedly connected to the bottom and sides of the second lifting slot by welding, using a full welding method.
3. A concealed counterweight hoist structure as claimed in claim 2, wherein, A drainage hole is provided between the bottom surface of the first lifting plate and the first lifting groove.
4. The concealed counterweight hoist structure of claim 2, wherein, Drainage holes are also provided between the bottom surface of the second lifting plate and the second lifting groove.
5. A concealed counterweight hoist structure according to claim 4, wherein Both the first and second lifting slots are rectangular, and the top surfaces of the first and second lifting slots are open structures, as are one end face of the first and second lifting slots.
6. A concealed counterweight hoist structure according to claim 1, wherein The bottom surfaces of the first and second hoisting slots are at a set angle to the top surface of the counterweight body, so that accumulated water can be drained through the drainage holes along the bottom surfaces of the first and second hoisting slots to the outside of the counterweight body.
7. The concealed counterweight hoist structure of claim 1, wherein, Multiple L-shaped brackets are provided on the top of the side walls of the first and second hoisting slots. Each L-shaped bracket consists of a vertical plate and a horizontal plate. The vertical plate is fixedly connected to the side wall of the first or second hoisting slot, and the horizontal plate is connected to the hoisting cover plate by fasteners.
8. The concealed counterweight hoist structure of claim 1, wherein, The lifting cover plate is made of steel plate and the surface is treated with rust prevention.
9. The concealed counterweight hoist structure of claim 1, wherein, The counterweight body is a hollow box structure, and a counterweight medium can be injected into the box; a bearing plate is also provided in the box.
10. A concealed counterweight hoist structure according to claim 9, wherein The bottom ends of the first and second lifting plates are fixedly connected to the bearing plate by welding.