A screening bucket for excavators with adjustable output size of screened material

Abstract

The application discloses a screening bucket capable of adjusting the output size of screened materials for excavators, which comprises a bucket frame, and rotatingly connected to the left and right sides of the bucket frame are adjustment discs; a first transmission shaft and a follow-up shaft are rotatingly connected between the adjustment discs; a second transmission shaft is rotatingly connected in the bucket frame; an oil cylinder with a cylinder tail end connected to the bucket frame and a piston end connected to the adjustment disc is arranged on the left and right sides of the bucket frame, and the oil cylinder drives the adjustment disc to rotate relative to the bucket frame; the same side ends of the first transmission shaft, the follow-up shaft and the second transmission shaft are fixedly provided with a first chain wheel, a second chain wheel and a third chain wheel respectively, and the first chain wheel, the second chain wheel and the third chain wheel are provided with a first chain therebetween; the other end of the second transmission shaft is drivingly connected with a power assembly; and the first transmission shaft and the second transmission shaft are respectively provided with screening cutters. The screening bucket has the characteristics of adjustable screening size and flexible and convenient operation.

Description

Technical Field

[0001] This invention relates to the field of engineering machinery technology, and more specifically, to a screening bucket for excavators with adjustable material output size. Background Technology

[0002] Screening buckets are essential tools for screening lumpy and powdery materials. Currently, excavator screening operations commonly use rotary screens, vibrating screens, and grid screens. These screens produce materials with fixed output sizes. If material needs to be sorted and stacked according to size, multiple screenings with different output sizes are required, resulting in multiple pieces of equipment, low efficiency, large construction site requirements, and wasted manpower and resources, leading to unsatisfactory overall results. Therefore, this invention proposes a screening bucket for excavators with adjustable material output sizes. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a screening bucket for excavators with adjustable material output size. This screening bucket has the characteristics of adjustable screening size and flexible and convenient operation.

[0004] To solve the above-mentioned technical problems, the present invention achieves its objective as follows: The present invention relates to a screening bucket for excavators with adjustable material output size, comprising a bucket frame detachably connected to the excavator boom, wherein coaxially arranged adjustment discs are rotatably connected to the left and right sides of the bucket frame, and a first drive shaft and a follower shaft are rotatably connected between the adjustment discs, wherein the follower shaft and the first drive shaft are not coaxial with the adjustment discs, a second drive shaft is rotatably connected inside the bucket frame, the second drive shaft is arranged parallel to the first drive shaft, and a hydraulic cylinder is provided on the left and right sides of the bucket frame, wherein the cylinder tail end is connected to the bucket frame and the piston end is connected to the adjustment disc, and the hydraulic cylinder drives the adjustment disc to rotate relative to the bucket frame; A first sprocket, a second sprocket, and a third sprocket are respectively fixed on the same side of the first drive shaft, the follower shaft, and the second drive shaft. A first chain is wound between the first sprocket, the second sprocket, and the third sprocket. The other end of the second drive shaft is connected to a power assembly that drives the rotation. Screening cutters are respectively provided on the first drive shaft and the second drive shaft, and the screening cutters are located inside the bucket frame.

[0005] The present invention is further configured such that: the power assembly includes a fourth sprocket, a fifth sprocket, a second chain and a hydraulic motor, the hydraulic motor is fixed on the bucket frame, the fourth sprocket is fixed on the second drive shaft, the fifth sprocket is fixed on the output shaft of the hydraulic motor, and the second chain is wound around the fourth sprocket and the fifth sprocket.

[0006] The present invention is further configured such that: the screening cutter includes two blade positioning plates that radially clamp the first drive shaft and the second drive shaft, each blade positioning plate is fixedly provided with blades arranged at intervals along the axial direction, and the screening cutter also includes a fixing ring that surrounds the two blade positioning plates and fixes them to the drive shaft.

[0007] In summary, the present invention has the following beneficial effects: 1. Simple structure, easy to install and maintain; 2. The sprocket is driven by a hydraulic motor, which reduces vibration. 3. Mounted at the front of the excavator, it is easy to operate and highly maneuverable; 4. Power is provided by the excavator's hydraulic system, eliminating the need for additional equipment and saving costs; 5. The size of the screened material can be adjusted without changing the equipment, improving construction efficiency; 6. Different screening blades can be quickly replaced according to different construction scenarios, resulting in high construction efficiency. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a side view of the structure of the present invention; Figure 3 This is a structural schematic diagram from another perspective of the present invention; Figure 4 This is a schematic diagram illustrating the overall structure of the screening bucket of the present invention; Figure 5 This is a schematic diagram illustrating the overall structure of the screening blade in this invention; Figure 6 This is a partial structural diagram illustrating the screening blade of the present invention. Detailed Implementation

[0009] To enable those skilled in the art to better understand the technical solutions of the present invention, preferred embodiments of the present invention are described below in conjunction with specific examples. However, it should be understood that these descriptions are merely for further illustrating the features and advantages of the present invention, and not for limiting the scope of the patent claims of the present 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.

[0010] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments.

[0011] Example 1 See Figures 1 to 6As shown, the present embodiment relates to an adjustable material output size screening bucket for excavators, comprising a bucket frame 1 detachably connected to the excavator boom. Adjustment discs 2 are rotatably connected to the left and right sides of the bucket frame 1, respectively. A first drive shaft 3 and a follower shaft 4 are rotatably connected between the adjustment discs 2. The follower shaft 4 and the first drive shaft 3 are not coaxial with the adjustment discs. A second drive shaft 5 is rotatably connected inside the bucket frame 1, and the second drive shaft 5 is arranged parallel to the first drive shaft 3. A hydraulic cylinder 6 is provided on the left and right sides of the bucket frame 1, with its tail end connected to the bucket frame and its piston end connected to the adjustment disc. The hydraulic cylinder 6 drives the adjustment disc 2 to rotate relative to the bucket frame 1. A first sprocket 7, a second sprocket 8, and a third sprocket 9 are fixedly mounted on the same side of the first drive shaft 3, the follower shaft 4, and the second drive shaft 5, respectively. A first chain 10 is wound around the first sprocket 7, the second sprocket 8, and the third sprocket 9. The other end of the second drive shaft 5 is connected to a power assembly for driving rotation. The power assembly includes a fourth sprocket 11, a fifth sprocket 12, a second chain 13, and a hydraulic motor (not shown). The hydraulic motor is fixed on the bucket frame 1. The fourth sprocket 11 is fixed on the second drive shaft 5. The fifth sprocket 12 is fixed on the output shaft of the hydraulic motor. The second chain 13 is wound around the fourth sprocket 11 and the fifth sprocket 12.

[0012] The first drive shaft 3 and the second drive shaft 5 are respectively provided with screening cutters 14, and the screening cutters 14 are located inside the bucket frame; the screening cutter includes two blade positioning plates 141 that radially clamp the first drive shaft and the second drive shaft, and each blade positioning plate 141 is fixedly provided with blades 142 arranged at intervals along the axial direction. The screening cutter also includes a fixing ring 143 that surrounds the two blade positioning plates and fixes them to the drive shaft.

[0013] In this implementation scheme, the screening bucket is an excavator attachment, mainly composed of a bucket frame, an adjustment cylinder, an adjustment disc, a drive shaft, a drive sprocket, a drive chain, a hydraulic motor, a screening blade assembly, and other components.

[0014] Working principle: The hydraulic motor drives the screening blades to rotate, causing the material to move; the distance between the transmission shafts is adjusted by the oil cylinder to adjust the output size of the screened material.

[0015] Instructions for use: First, install the screening bucket at the front end of the excavator boom and use the excavator's hydraulic system to provide power.

[0016] Then, the excavator's boom, arm, and I-beam frame drive the screening bucket to dig out the material that needs to be screened.

[0017] Finally, the hydraulic system of the excavator drives the hydraulic motor to rotate the screening blades, causing the material to move downwards. During this process, the transmission shaft and the distance between the transmission shafts can be adjusted by the synchronous movement of the hydraulic cylinders to screen materials of different sizes; different screening blades can be selected according to the different materials being screened to improve construction efficiency.

[0018] This screening bucket is primarily installed on excavators. The adjustable screening bucket, designed to screen materials of varying sizes, is mounted at the front of the excavator and controlled by the excavator's hydraulic system. It is easy to install and operate, allowing for quick adjustment of the output size of the screened material for classification. It can screen dry soil containing clay, gravel, and silt, as well as moist soil mixed with stones, gravel, and clay. It is widely used in earthwork and backfilling, construction waste treatment, gravel screening, environmental protection, and composting applications. With its comprehensive functions, it is highly practical.

[0019] Unless otherwise specified, in this invention, terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the actual orientation or positional relationship shown. They are used only for the convenience of describing this invention 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. Therefore, the terms used to describe orientation or positional relationships in this invention are for illustrative purposes only and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the embodiments and according to the specific circumstances.

[0020] Unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" in this invention should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A screening bucket for an excavator with adjustable output size for screening materials, comprising a bucket frame detachably connected to the excavator boom, characterized in that: The left and right sides of the bucket frame are respectively rotatably connected to coaxially arranged adjustment discs. A first drive shaft and a follower shaft are rotatably connected between the adjustment discs. The follower shaft and the first drive shaft are not coaxial with the adjustment discs. A second drive shaft is rotatably connected inside the bucket frame. The second drive shaft is arranged parallel to the first drive shaft. A hydraulic cylinder is respectively provided on the left and right sides of the bucket frame, with the cylinder tail end connected to the bucket frame and the piston end connected to the adjustment disc. The hydraulic cylinder drives the adjustment disc to rotate relative to the bucket frame. A first sprocket, a second sprocket, and a third sprocket are respectively fixed on the same side of the first drive shaft, the follower shaft, and the second drive shaft. A first chain is wound between the first sprocket, the second sprocket, and the third sprocket. The other end of the second drive shaft is connected to a power assembly that drives the rotation. Screening cutters are respectively provided on the first drive shaft and the second drive shaft, and the screening cutters are located inside the bucket frame.

2. The screening bucket for excavators with adjustable material output size according to claim 1, characterized in that: The powertrain includes a fourth sprocket, a fifth sprocket, a second chain, and a hydraulic motor. The hydraulic motor is fixed to the bucket frame, the fourth sprocket is fixed to the second drive shaft, the fifth sprocket is fixed to the output shaft of the hydraulic motor, and the second chain is wound around the fourth and fifth sprockets.

3. The adjustable screening bucket for excavators with adjustable material output size according to claim 1 or 2, characterized in that: The screening tool includes two blade positioning plates that radially clamp the first and second drive shafts. Each blade positioning plate is fixed with blades arranged at intervals along the axial direction. The screening tool also includes a fixing ring that surrounds the two blade positioning plates and fixes them to the drive shafts.

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