A new type of cleaning electric squeegee

Abstract

The utility model discloses a novel cleaning electric scraper, the device includes box, driving shaft, driven shaft, chain, scraper device, chain wheel, sliding bearing seat, fixed bearing seat, motor and speed reducer. Sliding bearing seat and box side wall sliding fit, and through the cooperation of adjusting bolt, adjusting nut and fixed plate realize the tensioning adjustment of chain, and the position of driven shaft can be accurately adjusted according to the running state. The scraper device includes cleaning plate, fixed angle steel, connecting shaft, pull rod and tension spring, and the tension spring provides elastic restoring force, so that the cleaning plate is automatically reset after stress deflection. The chain adopts double-row roller chain structure, and the scraper device is installed between the two chains and is distributed at equal intervals, and the cleaning plate pushes the material falling at the bottom of the box to the discharge port when the chain returns, realizing continuous automatic cleaning. The utility model has the advantages of compact structure, tensioning adjustable, reset stable, can effectively prevent material accumulation, improve cleaning efficiency, prolong the service life of equipment and reduce the maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of material conveying and cleaning technology, specifically a novel electric scraper for cleaning. Background Technology

[0002] Electric scrapers are cleaning devices used in material conveying equipment. They are often used in conjunction with belt feeders, belt conveyors, and other equipment to clean up materials that fall off the conveyor belt during the return journey. In bulk material conveying systems such as coal preparation plants, mineral processing plants, and building material plants, material spillage is inevitable during the operation of belt feeders. Some materials fall from the edges or joints of the belt body to the bottom of the equipment during the return journey. Long-term accumulation can easily cause material buildup at the bottom of the conveyor, affecting the normal operation of the equipment and on-site safety.

[0003] Existing cleaning devices generally use fixed scrapers or rubber sweepers. While these devices can remove some of the spilled material to a certain extent, they still have the following obvious drawbacks: First, the cleaning effect is unstable. When the material particles adhering to the conveyor belt surface are uneven or accumulate to a thick layer, the contact position between the scraper and the bottom of the box is fixed, resulting in incomplete cleaning of some areas. Second, the equipment maintenance workload is large. Most existing cleaning mechanisms are fixed installations, and the scrapers need to be manually disassembled and replaced after wear. Moreover, they are easily jammed by hard particles during operation, affecting normal operation.

[0004] In addition, the structure lacks adjustment functions. Some devices are not equipped with tension adjustment mechanisms, and the chain or transmission mechanism is prone to loosening after long-term operation, resulting in scraper misalignment or chain detachment.

[0005] Chinese patent document CN217147323U discloses a method for cleaning the return section of a conveyor belt by using a chain to drive a scraper to circulate along the bottom of the conveyor and utilizing an elastic reset device to automatically return the scraper to its original position after cleaning. However, this method has several drawbacks: the scraper reset mechanism is relatively simple, the elastic device acts directly on the scraper end, and the reset force is not adjustable, resulting in uneven cleaning performance under different working conditions. Furthermore, the device lacks a tension adjustment structure with a sliding bearing seat and a sliding groove, making it difficult to precisely adjust the chain tension after long-term operation, thus affecting cleaning stability.

[0006] To address the aforementioned issues, the industry has attempted to improve cleaning efficiency by modifying the cleaning plate material, adding auxiliary supports, or using an independent drive motor. However, these solutions often fail to effectively resolve the problems of chain tension adjustment and long-term operational stability. Therefore, there is still an urgent need for an electrically driven cleaning scraper device that is compact, has adjustable tension, provides stable cleaning performance, and features automatic reset, in order to improve material cleaning efficiency, reduce manual labor intensity, and extend the service life of conveying equipment. Utility Model Content

[0007] The technical problem to be solved by this utility model is to overcome the existing defects and provide a new type of electric cleaning scraper. This structure can effectively adjust the tension of the chain, so that the chain can maintain appropriate tension after long-term operation, avoiding chain skipping, deviation and jamming caused by slack, thereby ensuring the stable operation of the whole machine and effectively solving the problems in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution: A novel electric cleaning scraper includes a housing, a drive shaft, a driven shaft, a chain, a scraper device, a sprocket, a sliding bearing seat, and a fixed bearing seat. The sliding bearing seats are symmetrically installed on the right end of the housing and are slidably connected to the housing. A driven shaft is provided between the sliding bearing seats. The position of the driven shaft is adjusted by the position of the sliding bearing seats, which serves to adjust the position of the driven shaft and provide support and tension. The fixed bearing seats are symmetrically arranged on the left end of the housing. A drive shaft is provided between the fixed bearing seats. A sprocket is provided between the drive shaft and the driven shaft. The sprocket on the drive shaft and the sprocket on the driven shaft are connected by a chain. Scraper devices are provided at equal intervals on the chain. The scraper device includes a cleaning plate and a fixed angle steel. The fixed angle steel is screwed to the chain, and the cleaning plate is connected to the fixed angle steel by fixing bolts.

[0009] The connecting shaft of the fixed angle steel and the chain is screwed together. Both ends of the connecting shaft are welded to the pull rod. A tension spring is installed on the outside of the pull rod to realize the automatic reset of the scraper through elastic force.

[0010] Furthermore, it also includes an electric motor and a reducer. The electric motor is connected to the drive shaft via the reducer to drive the chain to circulate along a closed track, thereby achieving continuous cleaning of materials falling into the box. The reducer output shaft and the drive shaft are connected by a key to achieve reliable transmission and easy maintenance.

[0011] Furthermore, a sliding groove is provided on the side of the housing, and the sliding bearing seat is slidably connected to the sliding groove. An adjusting bolt is connected to the sliding bearing seat, and the other end of the adjusting bolt passes through the fixed plate and is fixed by the adjusting nut. Loosening the adjusting nut can adjust the position of the sliding bearing seat to adjust the tension of the chain.

[0012] Furthermore, the side of the fixed angle steel is provided with an adjustment elongated hole. The fixing bolt passes through the adjustment elongated hole and is connected to the cleaning plate. The position of the cleaning plate can be adjusted by the fixing bolt. The fit between the scraper and the bottom of the box can be adjusted according to the wear of the cleaning plate or the material accumulation.

[0013] Furthermore, the chain is a double-row roller chain structure, and the scraper device is set between the two chains at equal intervals. This double-row roller chain structure ensures smooth movement and improves the uniformity of scraping. The box is a rectangular structure with a discharge port at the bottom. When the scraper device returns along the chain, it pushes the material falling from the bottom of the box to the discharge port.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. By setting a sliding bearing seat at the right end of the housing and forming a groove on the side wall of the housing, combined with the matching structure of adjusting bolts, adjusting nuts and fixing plates, the adjustable function of the driven shaft position is realized; this structure can effectively adjust the tension of the chain, so that the chain can maintain appropriate tension after long-term operation, avoiding chain skipping, deviation and jamming caused by slack, thereby ensuring the stable operation of the whole machine.

[0015] 2. The scraper device adopts a fixed angle steel connection structure and the position of the cleaning plate can be adjusted. The fit between the scraper and the bottom of the box can be adjusted according to the wear of the cleaning plate or the material accumulation. The scraper device is installed between two chains and evenly distributed, so that the chain runs smoothly and ensures the continuity and thoroughness of the cleaning effect, solving the problems of material accumulation and difficulty in manual cleaning. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the left-side structure of this utility model; Figure 3 This is an enlarged structural diagram of point A in this utility model.

[0017] In the diagram: 1. Housing, 2. Drive shaft, 3. Scraper device, 4. Chain, 5. Sliding bearing seat, 6. Fixed bearing seat, 7. Driven shaft, 8. Sprocket, 9. Reducer, 10. Motor, 11. Slide groove, 12. Adjusting nut, 13. Adjusting bolt, 14. Fixing bolt, 15. Cleaning plate, 16. Fixing angle steel, 17. Adjusting elongated hole, 18. Fixing plate. Detailed Implementation

[0018] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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, they should not be construed as limitations on this utility model. Example

[0019] Please see Figure 1-3 This utility model provides a technical solution: a novel electric cleaning scraper, comprising a housing 1, a drive shaft 2, a driven shaft 7, a chain 4, a scraper device 3, a sprocket 8, a sliding bearing seat 5, a fixed bearing seat 6, a motor 10, a reducer 9, and a tension adjustment assembly.

[0020] Sliding bearing seats 5 are symmetrically installed on the right end of the housing 1 and are slidably connected to the housing 1; a driven shaft 7 is provided between the sliding bearing seats 5, and the position of the driven shaft 7 can be adjusted by adjusting the position of the sliding bearing seats 5, thereby playing a supporting and tensioning role; fixed bearing seats 6 are symmetrically arranged on the left end of the housing 1, and a drive shaft 2 is provided between them; sprockets 8 are respectively installed between the drive shaft 2 and the driven shaft 7, and the sprockets 8 on the drive shaft 2 and the sprockets 8 on the driven shaft 7 are connected by a chain 4; several scraper devices 3 are installed at equal intervals along the length direction of the chain 4.

[0021] The scraper device 3 includes a cleaning plate 15 and a fixing angle steel 16; the fixing angle steel 16 is screwed to the chain 4, and the cleaning plate 15 is connected to the fixing angle steel 16 by fixing bolts 14; the connecting shaft between the fixing angle steel 16 and the chain 4 is screwed, and optionally, pull rods are welded to both ends of the connecting shaft, and a tension spring is sleeved on the outside of each pull rod; one end of the tension spring abuts against the end of the pull rod, and the other end is fixed to the tension adjustment seat set on the housing 1; through this structure, when the cleaning plate 15 is impacted or deflected by material during operation, When stretched, the tension spring generates elastic force, which acts on the cleaning plate 15 through the pull rod, causing it to automatically return to its initial working position. This design gives the cleaning plate 15 a certain elastic rebound performance when cleaning materials, ensuring thorough scraping of materials at the bottom of the box while preventing damage to the cleaning plate when encountering large particles or foreign objects. At the same time, the preload of the tension spring can be adjusted by the tension adjustment seat, thereby changing the contact force of the cleaning plate to adapt to cleaning needs under different working conditions, improving the reliability and service life of the device.

[0022] The motor 10 is connected to the drive shaft 2 via the reducer 9. The torque output by the motor 10 is transmitted to the drive shaft 2 after being reduced in speed and increased in torque by the reducer 9, so that the chain 4 moves in a closed loop, thereby driving the scraper device 3 to continuously sweep the material falling into the bottom of the box 1. The output shaft of the reducer 9 and the drive shaft 2 are connected by a key to ensure reliable transmission and easy maintenance.

[0023] To achieve adjustable tension of chain 4, a slide groove 11 is provided on the side of housing 1, and sliding bearing seat 5 is slidably connected to slide groove 11; an adjusting bolt 13 is installed on sliding bearing seat 5, and the other end of adjusting bolt 13 passes through fixed plate 18 and is fixed by adjusting nut 12; rotating adjusting nut 12 can change the axial position of adjusting bolt 13, thereby driving sliding bearing seat 5 to move along slide groove direction, realizing fine adjustment of driven shaft 7 in front and behind, so as to accurately adjust the tension of chain 4, thereby preventing chain slack or deviation.

[0024] The side of the fixed angle steel 16 is provided with an adjustment elongated hole 17. The fixing bolt 14 passes through the adjustment elongated hole 17 and is connected to the cleaning plate 15. After loosening the fixing bolt 14, the cleaning plate 15 can be slightly adjusted in the direction of the adjustment elongated hole 17 so as to adjust the fit between the scraper and the bottom of the box according to the degree of wear or the thickness of the material accumulation, so as to ensure the continuity and thoroughness of the cleaning effect.

[0025] To further improve operational stability and cleaning uniformity, the chain 4 adopts a double-row roller chain structure, and the scraper device 3 is set between the two chains and arranged at equal intervals; the box 1 has a rectangular structure and a discharge port at the bottom. When the scraper device 3 runs with the chain 4 on the return stroke, it can push the material at the bottom of the box 1 to the discharge port to realize automatic material discharge.

[0026] This embodiment utilizes a tension adjustment structure comprised of a sliding bearing seat 5, adjusting bolts 13, and a sliding groove 11 to ensure that the chain 4 maintains appropriate tension even after long-term operation, preventing deviation and chain skipping. The adjustable connection structure of the fixed angle steel 16 and the cleaning plate 15 facilitates quick adjustment and replacement based on wear conditions. The elastic action of the tension spring enables automatic scraper reset, improving operational stability and service life. The combined drive of the motor 10 and reducer 9 achieves continuous automatic cleaning, with speed reduction ensuring smooth scraper movement. The double-row chain structure further enhances cleaning uniformity and overall reliability.

[0027] In other alternative or modified embodiments, the chain 4 can be selected as a single-row, double-row, or multi-row roller chain depending on the workload; the tension spring can be replaced with a torsion spring, rubber elastic element, or pneumatic spring; the chute 11 can adopt a T-shaped or dovetail groove structure, and the sliding bearing seat 5 can also achieve low-friction movement through roller guide rails; the adjusting bolt 13 can be replaced with a screw mechanism or electric push rod to achieve automatic tensioning; the cleaning plate 15 can be made of different materials such as wear-resistant polyurethane, rubber, and carbon steel to adapt to various material environments; the discharge port can be configured with a gate, guide chute, or dust cover according to the working conditions to optimize discharge and maintenance performance.

[0028] The foregoing has shown and described the basic principles, main features and advantages of this utility model. Various changes and modifications may be made to this utility model without departing from the spirit and scope thereof, and all such changes and modifications fall within the scope of this utility model as claimed.

Claims

1. A novel electric cleaning scraper, comprising a housing (1), a drive shaft (2), a driven shaft (7), a chain (4), a scraper assembly (3), a sprocket (8), a sliding bearing seat (5), and a fixed bearing seat (6), characterized in that: The sliding bearing seats (5) are symmetrically installed on the right end of the housing (1) and are slidably connected to the housing (1). A driven shaft (7) is provided between the sliding bearing seats (5). Fixed bearing seats (6) are symmetrically arranged on the left end of the housing (1). A drive shaft (2) is provided between the fixed bearing seats (6). A sprocket (8) is provided between the drive shaft (2) and the driven shaft (7). The sprocket (8) on the drive shaft (2) and the sprocket (8) on the driven shaft (7) are connected by a chain (4). Scraper devices (3) are provided at equal intervals on the chain (4). The scraper device (3) includes a cleaning plate (15) and a fixed angle steel (16). The fixed angle steel (16) is screwed to the chain (4). The cleaning plate (15) is connected to the fixed angle steel (16) by a fixing bolt (14).

2. The electric cleaning scraper according to claim 1, characterized in that: It also includes an electric motor (10) and a reducer (9). The electric motor (10) is connected to the drive shaft (2) via the reducer (9) to drive the chain (4) to move in a closed loop.

3. The novel electric cleaning scraper according to claim 1, characterized in that: The side of the housing (1) is provided with a sliding groove (11), and the sliding bearing seat (5) is slidably connected to the sliding groove (11). An adjusting bolt (13) is connected to the sliding bearing seat (5). The other end of the adjusting bolt (13) passes through the fixing plate (18) and is fixed by the adjusting nut (12).

4. A novel electric cleaning scraper according to claim 1, characterized in that: The side of the fixed angle steel (16) is provided with an adjustment elongated hole (17), and the fixing bolt (14) passes through the adjustment elongated hole (17) and is connected to the cleaning plate (15).

5. A novel electric cleaning scraper according to claim 1, characterized in that: The chain (4) is a double-row roller chain structure, and the scraper device (3) is set between the two chains at equal intervals.

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