Excavator counterweight tooling

Abstract

The utility model provides a kind of excavator counterweight tool, it is related to counterweight tool technical field, including installation frame, further including adjustable counterweight mechanism, adjustable counterweight mechanism includes the extension frame being connected on installation frame, hydraulic telescopic rod is slidably connected on installation frame, movable counterweight block is fixedly connected with on hydraulic telescopic rod by series connection plate, movable counterweight block is slidably connected with guide frame, fixed frame is fixedly connected with on guide frame, fixed counterweight block is fixedly embedded in fixed frame, transmission frame is fixedly connected with on hydraulic telescopic rod by vertical frame, transmission block is slidably connected with on transmission frame, the cooperation of fixed shaft and guide frame in the utility model ensures that displacement is not deviated, V-shaped rod support structure guarantees gravity conduction reasonable, damping spring and vertical frame spring play the role of shock attenuation and power assistance, both enhance operation safety, and optimize equipment use cost and transportation convenience, improve the adaptability and work efficiency of medium and large excavator under different accessory collocation.

Description

Technical Field

[0001] This utility model relates to the field of counterweight fixture technology, and in particular to a counterweight fixture for an excavator. Background Technology

[0002] Excavator counterweights refer to heavy-duty special tooling attachments that excavators are equipped with according to specific engineering needs. These attachments are used to expand the excavator's operational functions and adapt to heavy or special operating scenarios. Common heavy-duty attachments include hydraulic breakers, hydraulic shears, heavy-duty log grapples, extra-large capacity buckets, rippers, etc. They are widely used in mining, building demolition, heavy infrastructure, metallurgical logistics and other scenarios. By adapting different heavy-duty attachments, excavators can be transformed from basic excavation equipment into multi-functional heavy-duty working tools, greatly improving the adaptability and efficiency of engineering operations.

[0003] However, in the current technology, most of the mainstream counterweight fixtures (especially for medium and large excavators) are integrated fixed counterweights. When the excavator is equipped with buckets or attachments of different specifications (such as hydraulic hammers and log grapples), the weight at the front end varies greatly. Fixed counterweights cannot achieve optimal matching. When using heavy attachments, the stability of the whole machine decreases, there is a risk of overturning, and there is a lot of shaking when starting and braking, which affects the operating accuracy and safety. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a counterweight tooling for excavators.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a counterweight fixture for an excavator, comprising:

[0006] Mounting frame;

[0007] An adjustable counterweight mechanism includes an extension frame connected to a mounting frame, a hydraulic telescopic rod slidably connected to the mounting frame, a movable counterweight block fixedly connected to the hydraulic telescopic rod via a series plate, a guide frame slidably connected to the movable counterweight block, a fixed frame fixedly connected to the guide frame, a fixed counterweight block fixedly embedded in the fixed frame, a transmission frame fixedly connected to the hydraulic telescopic rod via a vertical frame, a transmission block slidably connected to the transmission frame, a counterweight transverse block fixedly connected to the transmission block, and the transmission block slidably connected within the mounting frame.

[0008] In a preferred embodiment, a fixed shaft is fixedly connected to the movable counterweight, the fixed shaft is slidably connected to the guide frame, and the fixed frame is fixedly connected inside the mounting frame.

[0009] The above technical solution is adopted: when in use, a fixed shaft is set, which slides on the guide frame, so that when the hydraulic telescopic rod drives the movable counterweight to move, it moves under the guidance of the guide frame and will not deviate. It can also play a certain supporting role for the movable counterweight and prevent the hydraulic telescopic rod from being fully stressed.

[0010] In a preferred embodiment, a V-shaped rod is fixedly connected to the mounting frame, a fixing plate is fixedly connected to the V-shaped rod, a horizontal frame is fixedly connected to the fixing plate, and the extension frame is fixedly connected to the horizontal frame.

[0011] The above technical solution is adopted: when in use, a V-shaped rod is fixedly connected to the mounting frame. The top of the V-shaped rod is fixed to the extension frame to provide support, and the bottom two ends are fixed to the mounting frame to ensure reasonable transmission of the center of gravity of the mounting frame.

[0012] In a preferred embodiment, a vertical sliding plate is fixedly connected to the fixed shaft, a horizontal rod is fixedly connected to the vertical sliding plate, a fixed plate is fixedly connected to the horizontal rod, a horizontal plate is fixedly connected to the fixed plate, a damping spring is fixedly connected to the horizontal plate, and the side of the damping spring away from the horizontal plate is fixedly connected to the mounting frame.

[0013] The above technical solution is adopted as follows: a vertical sliding plate is fixedly connected to the fixed shaft. When the fixed shaft on the movable counterweight slides on the guide frame, the vertical sliding plate will be driven to rise vertically, causing the fixed plate to drive the horizontal plate to rise, which will stretch the damping spring. When the movable counterweight slides in the opposite direction, the damping spring will be compressed, and the damping spring will play a shock absorption role.

[0014] In a preferred embodiment, a spring is fixedly connected to the vertical frame, and the side of the spring away from the vertical frame is fixedly connected to the top inside the mounting frame.

[0015] The above technical solution is adopted: the spring at the top of the vertical frame is fixed to the top of the inner wall of the mounting frame, which helps the hydraulic telescopic rod to lift the vertical frame.

[0016] In a preferred embodiment, a vertical groove adapted to the hydraulic telescopic rod is provided on the inner wall of the mounting frame near the hydraulic telescopic rod. A square block is slidably connected in the vertical groove of the mounting frame. The square block in the mounting frame is fixedly connected to the hydraulic telescopic rod. A fixing block is fixedly connected in the mounting frame, and the hydraulic telescopic rod is slidably connected to the fixing block.

[0017] The above technical solution is adopted: a square iron block is fixed in the vertical groove inside the mounting frame. The vertical groove is coated with lubricating oil to facilitate the sliding of the square block. The square block acts as a gasket. In use, the hydraulic telescopic rod that is fixedly connected to it is fixed on the square block, and the square block drives the gasket to move.

[0018] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0019] When using heavy-duty attachments, this invention moves the counterweight components backward, shifting the center of gravity backward and significantly improving overall machine stability, reducing the risk of tipping over, and minimizing swaying during rotation to improve operational accuracy. When using a standard bucket, the counterweight components are moved forward to reduce redundant counterweight, lowering fuel consumption and reducing wear on the traveling mechanism and slewing support. Meanwhile, the cooperation between the fixed shaft and the guide frame ensures that displacement does not deviate, the V-shaped support structure ensures reasonable center of gravity transmission, and the damping springs and vertical frame springs provide shock absorption and assistance. This not only enhances operational safety but also optimizes equipment operating costs and transportation convenience, improving the adaptability and work efficiency of medium and large excavators under different attachment combinations. Attached Figure Description

[0020] Figure 1 This utility model provides an overall structural schematic diagram of an excavator counterweight fixture.

[0021] Figure 2 This utility model provides a schematic diagram of the installation frame of an excavator counterweight fixture in the removed state.

[0022] Figure 3 This utility model provides a schematic diagram of the guide frame position structure for an excavator counterweight fixture.

[0023] Figure 4 This is a schematic diagram of the cross-sectional structure of the extension frame of an excavator counterweight fixture provided by this utility model.

[0024] Figure 5 This utility model provides a schematic diagram of the fixed plate position structure of an excavator counterweight fixture.

[0025] Legend:

[0026] 1. Mounting frame;

[0027] 2. Adjustable counterweight mechanism; 21. Extension frame; 22. Transmission block; 23. Horizontal counterweight block; 24. Vertical frame; 25. Transmission frame; 26. Fixed block; 27. Movable counterweight block; 271. Fixed counterweight block; 28. Vertical sliding plate; 29. ​​Guide frame; 291. Fixed shaft; 210. Fixed frame; 211. Hydraulic telescopic rod; 212. Connecting plate; 213. Damping spring; 214. Horizontal plate; 215. Fixed plate; 216. Horizontal rod;

[0028] 3. Fixed plate; 31. Horizontal frame; 32. V-shaped bar. Detailed Implementation

[0029] 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.

[0030] like Figures 1 to 4 As shown, this utility model provides a technical solution: a counterweight fixture for an excavator, comprising:

[0031] Mounting box 1;

[0032] The adjustable counterweight mechanism 2 includes an extension frame 21 connected to the mounting frame 1. A hydraulic telescopic rod 211 is slidably connected to the mounting frame 1. A movable counterweight block 27 is fixedly connected to the hydraulic telescopic rod 211 via a series plate 212. A guide frame 29 is slidably connected to the movable counterweight block 27. A fixed frame 210 is fixedly connected to the guide frame 29. A fixed counterweight block 271 is fixedly embedded in the fixed frame 210. A transmission frame 25 is fixedly connected to the hydraulic telescopic rod 211 via a vertical frame 24. A transmission block 22 is slidably connected to the transmission frame 25. A counterweight transverse block 23 is fixedly connected to the transmission block 22. The transmission block 22 is slidably connected within the mounting frame 1.

[0033] like Figures 1 to 5As shown, in this utility model, the mounting frame 1 is first fixed to the rear of the excavator with bolts. When the counterweight center of gravity needs to be adjusted, the hydraulic telescopic rod 211 is used as the power source. First, the series plate 212 is driven to make linear displacement (moving towards the side closer to the counterweight transverse block 23) through a rigid connection. Then, the series plate 212 drives the movable counterweight block 27 to slide synchronously (to the side away from the fixed frame 210) through a fixed connection. During this process, the fixed shaft 291 on the movable counterweight block 27 slides along the guide frame 29, which both limits the offset and provides support, so that the movable counterweight block 27 completes the downward movement while making horizontal displacement. At the same time, the hydraulic telescopic rod 211 is... The fixed block 26 drives synchronous sliding, which in turn drives the transmission frame 25 to move through the vertical frame 24. The transmission frame 25 is embedded in the inclined hole of the transmission block 22. Through the inclined surface contact transmission, its downward motion is converted into the horizontal displacement of the transmission block 22 (towards the side away from the fixed frame 210). The transmission block 22 then drives the counterweight transverse block 23 to slide in the same direction within the extension frame 21 through a rigid connection. Finally, the counterweight transverse block 23 moves to the rear position of the extension frame 21. Throughout the process, the V-shaped rod 32 and the fixed plate 3 provide stable support for the extension frame 21 through support transmission. Through multi-stage hydraulic combined with mechanical linkage transmission, the center of gravity of the entire counterweight block in the mounting frame 1 is shifted backward.

[0034] Furthermore, such as Figures 1 to 4 As shown, a fixed shaft 291 is fixedly connected to the movable counterweight 27. The fixed shaft 291 is slidably connected to the guide frame 29. The fixed frame 210 is fixedly connected inside the mounting frame 1. In use, the fixed shaft 291 slides on the guide frame 29, so that when the hydraulic telescopic rod 211 drives the movable counterweight 27 to move, it moves under the guidance of the guide frame 29 and will not deviate. It can also play a certain supporting role for the movable counterweight 27 and prevent the hydraulic telescopic rod 211 from being fully stressed.

[0035] like Figures 1 to 2 As shown, a V-shaped rod 32 is fixedly connected to the mounting frame 1, a fixing plate 3 is fixedly connected to the V-shaped rod 32, a horizontal frame 31 is fixedly connected to the fixing plate 3, and an extension frame 21 is fixedly connected to the horizontal frame 31. In use, the V-shaped rod 32 is fixedly connected to the mounting frame 1. The top of the V-shaped rod 32 is fixed to the extension frame 21 to provide support, and the bottom two ends are fixed to the mounting frame 1 to ensure reasonable transmission of the center of gravity of the mounting frame 1.

[0036] like Figures 2 to 5As shown, a vertical sliding plate 28 is fixedly connected to the fixed shaft 291, a horizontal rod 216 is fixedly connected to the vertical sliding plate 28, a fixed plate 215 is fixedly connected to the horizontal rod 216, a horizontal plate 214 is fixedly connected to the fixed plate 215, and a damping spring 213 is fixedly connected to the horizontal plate 214. The side of the damping spring 213 away from the horizontal plate 214 is fixedly connected to the mounting frame 1. By fixing the vertical sliding plate 28 to the fixed shaft 291, when the fixed shaft 291 on the movable counterweight 27 slides on the guide frame 29, the vertical sliding plate 28 will be driven to rise vertically, causing the fixed plate 215 to drive the horizontal plate 214 to rise, thus stretching the damping spring 213. When the movable counterweight 27 slides in the opposite direction, the damping spring 213 will be compressed, thus using the damping spring 213 to play a shock-absorbing role.

[0037] like Figure 2 As shown, a spring is fixedly connected to the vertical frame 24. The side of the spring on the vertical frame 24 away from the vertical frame 24 is fixedly connected to the top inside the mounting frame 1. The spring at the top of the vertical frame 24 is fixed to the top of the inner wall of the mounting frame 1, which helps the hydraulic telescopic rod 211 to lift the vertical frame 24.

[0038] like Figures 1 to 5 As shown, a vertical groove adapted to the hydraulic telescopic rod 211 is provided on the inner wall of the mounting frame 1 near the side of the hydraulic telescopic rod 211. A square block is slidably connected in the vertical groove of the mounting frame 1. The square block in the mounting frame 1 is fixedly connected to the hydraulic telescopic rod 211. A fixing block 26 is fixedly connected in the mounting frame 1. The hydraulic telescopic rod 211 is slidably connected to the fixing block 26. An iron square block is fixed in the vertical groove of the mounting frame 1. The vertical groove is coated with lubricating oil to facilitate the sliding of the square block. The square block acts as a gasket. In use, the hydraulic telescopic rod 211 fixedly connected to it is fixed on the square block, and the square block drives the gasket to move.

[0039] Working principle:

[0040] like Figure 1-5 As shown, when in use, the mounting frame 1 is fixed to the rear of the excavator using bolts;

[0041] When the counterweight center of gravity needs to be adjusted, simply activate the hydraulic telescopic rod 211 (model: Rexroth CDT3 series self-adjusting terminal buffer, Rexroth CGH1-250 / 320) to move the series plate 212 towards the side closer to the counterweight transverse block 23. This causes the series plate 212 to slide the movable counterweight block 27 away from the fixed frame 210. At this time, under the guidance of the fixed shaft 291, the movable counterweight block 27 is moved downhill while being moved. Simultaneously, the hydraulic telescopic rod 211 will cause the transmission frame 25 to slide down in the inclined hole on the transmission block 22, causing the transmission block 22 to be moved away from the fixed frame 210. This causes the transmission block 22 to move the counterweight transverse block 23 away from the fixed frame 21 within the extension frame 21. The counterweight transverse block 23 moves to a rear position on the extension frame 21. The V-shaped rod 32 and the fixed plate 3 support the extension frame 21, causing the center of gravity of the entire counterweight block in the mounting frame 1 to shift backward.

[0042] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A counterweight fixture for an excavator, characterized in that, include: Mounting box (1); An adjustable counterweight mechanism (2) includes an extension frame (21) connected to a mounting frame (1). A hydraulic telescopic rod (211) is slidably connected to the mounting frame (1). A movable counterweight block (27) is fixedly connected to the hydraulic telescopic rod (211) via a series plate (212). A guide frame (29) is slidably connected to the movable counterweight block (27). A fixed frame (210) is fixedly connected to the guide frame (29). A fixed counterweight block (271) is fixedly embedded in the fixed frame (210). A transmission frame (25) is fixedly connected to the hydraulic telescopic rod (211) via a vertical frame (24). A transmission block (22) is slidably connected to the transmission frame (25). A counterweight transverse block (23) is fixedly connected to the transmission block (22), and the transmission block (22) is slidably connected inside the mounting frame (1).

2. The excavator counterweight fixture according to claim 1, characterized in that: A fixed shaft (291) is fixedly connected to the movable counterweight (27), the fixed shaft (291) is slidably connected to the guide frame (29), and the fixed frame (210) is fixedly connected to the mounting frame (1).

3. The excavator counterweight fixture according to claim 1, characterized in that: A V-shaped rod (32) is fixedly connected to the mounting frame (1), a fixing plate (3) is fixedly connected to the V-shaped rod (32), a horizontal frame (31) is fixedly connected to the fixing plate (3), and the extension frame (21) is fixedly connected to the horizontal frame (31).

4. The excavator counterweight fixture according to claim 2, characterized in that: A vertical sliding plate (28) is fixedly connected to the fixed shaft (291), a horizontal rod (216) is fixedly connected to the vertical sliding plate (28), a fixed plate (215) is fixedly connected to the horizontal rod (216), a horizontal plate (214) is fixedly connected to the fixed plate (215), a damping spring (213) is fixedly connected to the horizontal plate (214), and the side of the damping spring (213) away from the horizontal plate (214) is fixedly connected to the mounting frame (1).

5. The excavator counterweight fixture according to claim 1, characterized in that: A spring is fixedly connected to the vertical frame (24), and the side of the spring on the vertical frame (24) away from the vertical frame (24) is fixedly connected to the top inside the mounting frame (1).

6. The excavator counterweight fixture according to claim 1, characterized in that: The inner wall of the mounting frame (1) is provided with a vertical groove adapted to the hydraulic telescopic rod (211) on the side near the hydraulic telescopic rod (211). A square block is slidably connected in the vertical groove of the mounting frame (1). The square block in the mounting frame (1) is fixedly connected to the hydraulic telescopic rod (211). A fixing block (26) is fixedly connected in the mounting frame (1). The hydraulic telescopic rod (211) is slidably connected to the fixing block (26).

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