Novel tensioning fixing device for sampling and sampling bucket elevator

Abstract

The application discloses a novel tensioning fixing device of a sampling bucket elevator, relates to the technical field of bucket elevator tensioning, and comprises a frame and a cage type change direction roller arranged in the frame. Sliding plates are vertically arranged on the two sides of the frame, the two ends of the cage type change direction roller are rotatably connected to the sliding plates, and a tensioning adjusting structure is arranged between the frame and the sliding plates. The tensioning adjusting structure comprises a screw rod vertically arranged on the side of the frame through a second nut, and the sliding plate is connected to the screw rod through a first nut. The technical advantage of the application is that the tensioning degree of the bucket elevator is adjusted through the design of the tensioning adjusting structure, and a pair of second nuts is arranged on the screw rod to ensure the durability of the tensioning adjusting structure under long-time use. The cylindrical hole aligning ball bearing and the stainless steel labyrinth bearing seat are adopted, the radial bearing capacity and the aligning capacity are good, and the sealing performance is good, so that the durability of the cage type change direction roller under the use of the cage type change direction roller in a severe environment is improved.

Description

Technical Field

[0001] This application relates to the field of bucket elevator tensioning technology, and in particular to a novel tensioning and fixing device for a sampling bucket elevator. Background Technology

[0002] In bulk cargo trade such as coal and ore, quality inspection is a core element in ensuring fair transactions. Traditional manual sampling methods suffer from low efficiency, poor representativeness, and susceptibility to human interference, making it difficult to meet the demands of modern ports and power plants for rapid, accurate, and automated testing. The unloading sampling and preparation tower, a key piece of equipment in the bulk cargo unloading process, integrates automated sampling, crushing, reduction, sample preparation, and packaging technologies, achieving full automation from unloading to sample preparation. It has become a core tool for ensuring fair trade and improving testing efficiency. As a core piece of equipment for coal quality testing, the unloading sampling and preparation tower operates on the principle that a sampling head with a shovel is installed in the middle of a belt conveyor, directly sampling the entire cross-section from the moving, inclined conveyor belt. During operation, the shovel head is driven by a geared motor to rotate according to a programmed sequence. It collects one sample per revolution at regular intervals or mass intervals. A scraper at the rear of the shovel head ensures that the collected sample completely enters the chute. The sample flows down the chute into the primary belt feeder, and then the primary feeder continuously and evenly conveys the sample to the crusher. The crusher crushes the sample according to the specified particle size requirements. After crushing, the material is divided by a separator into two parts: the analytical sample and the residue. The analytical sample falls into a sample collection bag, is packaged, and used in the laboratory. The residue, after being divided, is lifted to a certain height by a bucket elevator and returned to the main material flow, thus completing the entire sampling process.

[0003] Currently, bucket elevators use cage-type redirecting drums for tension control, but their bearing housings are easily damaged. Frequent damage not only affects sampling efficiency but also increases maintenance and spare parts costs. Furthermore, during long-term height adjustments, the tension adjustment structure of the cage-type redirecting drum is prone to loosening, which in turn affects the subsequent tensioning effect. In addition, the access door of the cage-type redirecting drum is difficult to open, requiring specific tools, which in turn affects the efficiency of maintenance and repair. Utility Model Content

[0004] This device provides a novel tensioning and fixing device for a sampling bucket elevator. Addressing the problems of existing technologies, such as easy corrosion of the shell frame, difficulty in opening the access door affecting maintenance efficiency, and easy damage and high maintenance costs of the cage-type redirecting roller bearing housing, this device improves the reliability and stability of the equipment in humid and corrosive environments by adopting a stainless steel shell frame with reinforcing ribs, incorporating quick-release latches on the access door, and using self-aligning ball bearings and stainless steel labyrinth bearing housings for the cage-type redirecting roller. This enhances the efficiency of equipment maintenance and repair, reduces maintenance and spare parts costs, and ultimately ensures efficient sampling and preparation. The specific implementation method is as follows: A novel tensioning and fixing device for a sampling bucket elevator includes: The frame and the cage-type redirecting rollers located within the frame; The frame is vertically equipped with sliding plates on both sides, and the two ends of the cage-type redirecting roller are rotatably connected to the sliding plates. A tension adjustment structure is provided between the frame and the sliding plates. The tension adjustment structure includes a screw rod vertically located on the side of the frame via a second nut, and a sliding plate threaded to the screw rod via a first nut. The height of the sliding plate and the cage-type redirecting roller can be adjusted by manually rotating the first nut, thereby achieving the tension adjustment and fixation of the bucket elevator.

[0005] Based on the above technical solutions, the tension adjustment structure achieves the adjustment of the installation height of the cage-type redirecting roller through the first nut and screw. During operation, the height of both sides of the cage-type redirecting roller is adjusted symmetrically until the conveyor belt tension meets the requirements. The sliding plate controls the tension by adjusting the extension and retraction of the fixed pressure strips on both sides through the screw and double nuts. This design makes the tension adjustment more precise and stable, avoiding belt deviation and stalling caused by insufficient tension, thereby reducing the risk of motor failure caused by stalling.

[0006] Preferably, a pair of second nuts are provided, and the screw passes vertically through the horizontal plate on the side of the frame, with the second nut threaded at both the entry and exit points of the screw.

[0007] Based on the above technical solutions, the design of two second nuts also enhances the locking effect of the tensioning sliding plate, preventing it from loosening after a period of use.

[0008] Preferably, the frame is a square tube surrounded by a sealing plate and an access door, with the access door hinged to the end of the sealing plate.

[0009] Preferably, the frame side is provided with a door hinge, the door hinge includes a positioning block and a pin slidably connected to the positioning block, the pin being movably abutting against the opening and closing side of the inspection door.

[0010] Based on the above technical solutions, the frame has been redesigned from the original 2mm ordinary carbon steel to a 4mm stainless steel shell frame. Stainless steel has excellent corrosion resistance and can be used for a long time in humid and corrosive environments without corroding, thus effectively avoiding material dust and leakage caused by shell corrosion, reducing environmental pollution and cleaning workload. Furthermore, reinforcing ribs are designed around the frame to enhance its overall strength and rigidity, ensuring the stability and reliability of the equipment during long-term use. The access door uses a quick-release latch opening method, i.e., a pin-driven quick-plugging mechanism instead of the original second nut locking method. This design allows for rapid opening and cleaning of the access door in case of material blockage, greatly improving maintenance efficiency and reducing inconvenience caused by tool limitations and time consumption.

[0011] Preferably, a labyrinth bearing seat is provided on the sealing plate via a round nut, and a first washer is sandwiched between the labyrinth bearing seat and the sealing plate; the labyrinth bearing seat is rotatably connected to the shaft end of the cage-type redirecting roller via a cylindrical self-aligning ball bearing, and an oil seal is provided at the cylindrical self-aligning ball bearing.

[0012] Preferably, a pressure strip is provided at the sliding contact point between the sliding plate and the sealing plate.

[0013] Based on the above technical solutions, the bearing adopts a cylindrical bore self-aligning ball bearing. This type of bearing has the characteristics of strong radial load capacity and good self-aligning ability, which can adapt to the working requirements under different working conditions. At the same time, its advantages of simple maintenance, convenient installation and low cost also reduce the maintenance cost and failure rate of the equipment. The bearing housing adopts a stainless steel labyrinth bearing housing, which provides stable support for the bearing while having good sealing performance. This design can reduce internal contamination and lubricating oil loss of the bearing, reduce the risk of bearing wear and corrosion, thereby extending the service life of the bearing. At the same time, the stainless steel material also enhances the corrosion resistance of the bearing housing, enabling it to be used for a long time in harsh environments.

[0014] Preferably, the access door is equipped with a folding handle.

[0015] Preferably, a pressure cap is fixed to the end of the labyrinth bearing housing, and a retaining washer is provided between the labyrinth bearing housing and the cylindrical bore self-aligning ball bearing.

[0016] Based on the above technical solutions, the gland and the locking washer are conventional technical means in this field.

[0017] In summary, this application includes the following beneficial technical effects: 1. This utility model achieves tension adjustment of the bucket elevator by designing a tension adjustment structure, and at the same time designs a pair of second nuts to act on the lead screw, ensuring the durability of the tension adjustment structure under long-term use; 2. This utility model, by adopting a cylindrical bore self-aligning ball bearing and a stainless steel labyrinth bearing housing, has strong radial load-bearing capacity and good self-aligning ability, and has good sealing performance, which can improve the durability of the cage-type redirecting roller in harsh environments. 3. This utility model has a simple structure. The inspection door is designed with a quick-release latch, which allows for rapid opening and cleaning when a blockage occurs, greatly improving the efficiency of maintenance and repair. Attached Figure Description

[0018] Figure 1 This is a front view schematic diagram of the structure of this utility model. Figure 1 ; Figure 2 This is a side view structural diagram of the present invention; Figure 3 This is a front view schematic diagram of the structure of this utility model. Figure 2 ; Figure 4 This is a cross-sectional view of the structure of this utility model; Figure 5 This is an exploded structural diagram of the present invention; Figure 6 This is a top view of the structure of this utility model.

[0019] Explanation of reference numerals in the attached figures: 1. Frame, 2. Sealing plate, 3. Inspection door, 4. Pressure strip, 5. Labyrinth bearing seat, 6. Cage-type redirecting roller, 7. Door hinge, 8. Handle, 9. Sliding plate, 10. Second nut, 11. Cylindrical bore self-aligning ball bearing, 12. Round nut, 13. Oil seal, 14. Internal thread, 15. Pressure cap, 16. First washer, 17. Locking washer, 18. First nut 71. Positioning block; 72. Pin. Detailed Implementation

[0020] The specific embodiments of this utility model are described below with reference to the accompanying drawings and examples: It should be noted that the structures, proportions, sizes, etc. shown in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0021] Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in this specification are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.

[0022] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0023] This application discloses a novel tensioning and fixing device for a sampling bucket elevator.

[0024] Example 1 Reference Figures 1 to 6 This embodiment discloses a novel sampling bucket elevator tensioning and fixing device, including a frame 1 and a cage-type redirecting roller 6 disposed in the frame 1. Sliding plates 9 are vertically provided on both sides of the frame 1. The two ends of the cage-type redirecting roller 6 are respectively rotatably connected to the sliding plates 9, and a tensioning adjustment structure is provided between the frame 1 and the sliding plates 9.

[0025] The tension adjustment structure includes a screw 14 vertically located on the side of the frame 1 via a second nut 10. A sliding plate 9 is threaded to the screw 14 via a first nut 18. The height of the sliding plate 9 and the cage-type redirecting roller 6 can be adjusted by manually rotating the first nut 18, thereby adjusting and fixing the tension of the bucket elevator. In this structure, there is a pair of second nuts 10. The screw 14 passes vertically through the horizontal plate on the side of the frame 1. The screw 14 is threaded with a second nut 10 at both the entry and exit points.

[0026] The frame 1 is a square tube, which is formed by the sealing plate 2 and the inspection door 3. The inspection door 3 is hinged to the end of the sealing plate 2. In this structure, the side of the frame 1 is provided with a door hinge 7. The door hinge 7 includes a positioning block 71 and a pin 72 that is slidably connected to the positioning block 71. The pin 72 is movably abutted against the opening and closing side of the inspection door 3. The sliding plate 9 is slidably connected to the sealing plate 2 in the frame 1. A pressure strip 4 is provided on the outside of the sliding contact point between the sliding plate 9 and the sealing plate 2. The inspection door 3 is provided with a folding handle 8.

[0027] A labyrinth bearing seat 5 is provided on the sealing plate 2 via a round nut 12. A first washer 16 is sandwiched between the labyrinth bearing seat 5 and the sealing plate 2. The labyrinth bearing seat 5 is rotatably connected to the shaft end of the cage-type redirecting roller 6 via a cylindrical hole self-aligning ball bearing 11. An oil seal 13 is provided at the cylindrical hole self-aligning ball bearing 11. A pressure cap 15 is fixed at the end of the labyrinth bearing seat 5. A stop washer 17 is provided between the labyrinth bearing seat 5 and the cylindrical hole self-aligning ball bearing 11.

[0028] The specific implementation process is as follows: When adjusting the tension, loosen the lower second nut 10, and rotate the upper second nut 10 to lift the screw 14 and the sliding plate 9 along the height direction of the sealing plate 2; at the same time, the height of the cage-type redirecting roller 6 is adjusted synchronously. The cage-type redirecting roller 6 is connected to a belt, which then achieves belt tension; after the cage-type redirecting roller 6 reaches the specified tension height, tighten the two second nuts 10 to lock the height of the cage-type redirecting roller 6. As shown in the figure, during subsequent operation of the bucket elevator, the cage-type redirecting drum 6 rotates, and the cylindrical hole self-aligning ball bearing 11 rotates relative to the labyrinth bearing seat 5, thereby improving the stability of the rotation of the cage-type redirecting drum 6. When the frame 1 needs to be cleaned, the pin 72 is pulled relative to the positioning block 71, thereby unlocking the inspection door 3 and enabling the inspection door 3 to be opened quickly to complete the inspection.

[0029] Many other changes and modifications can be made without departing from the concept and scope of this utility model. It should be understood that this utility model is not limited to the specific embodiments, and the scope of this utility model is defined by the appended claims.

Claims

1. A novel tensioning and fixing device for a sampling bucket elevator, characterized in that, include: Frame (1) and cage-type redirecting roller (6) disposed within the frame (1); The frame (1) has vertical sliding plates (9) on both sides, and the two ends of the cage-type redirecting roller (6) are respectively rotatably connected to the sliding plates (9), and a tension adjustment structure is provided between the frame (1) and the sliding plates (9). The tension adjustment structure includes a screw (14) vertically located on the side of the frame (1) via a second nut (10), and a sliding plate (9) threaded to the screw (14) via a first nut (18). The height of the sliding plate (9) and the cage-type redirecting roller (6) can be adjusted by manually rotating the first nut (18), thereby realizing the tension adjustment and fixation of the bucket elevator.

2. The novel sampling bucket elevator tensioning and fixing device according to claim 1, characterized in that, The second nut (10) is provided in pairs, and the screw (14) passes vertically through the horizontal plate on the side of the frame (1). The screw (14) is threaded with the second nut (10) at both the entry and exit points.

3. The novel sampling bucket elevator tensioning and fixing device according to claim 2, characterized in that, The frame (1) is a square tube surrounded by a sealing plate (2) and an inspection door (3), and the inspection door (3) is hinged to the end of the sealing plate (2).

4. The novel sampling bucket elevator tensioning and fixing device according to claim 3, characterized in that, The frame (1) is provided with a door hinge (7) on its side. The door hinge (7) includes a positioning block (71) and a pin (72) slidably connected to the positioning block (71). The pin (72) is movably abutted against the opening and closing side of the inspection door (3).

5. A novel tensioning and fixing device for a sampling bucket elevator according to claim 3, characterized in that, The sealing plate (2) is provided with a labyrinth bearing seat (5) by a round nut (12), and a first washer (16) is sandwiched between the labyrinth bearing seat (5) and the sealing plate (2). The labyrinth bearing housing (5) is rotatably connected to the shaft end of the cage-type redirecting roller (6) via a cylindrical bore self-aligning ball bearing (11), and an oil seal (13) is provided at the cylindrical bore self-aligning ball bearing (11).

6. A novel tensioning and fixing device for a sampling bucket elevator according to claim 5, characterized in that, A pressure strip (4) is provided on the outside of the sliding contact point between the sliding plate (9) and the sealing plate (2).

7. A novel tensioning and fixing device for a sampling bucket elevator according to claim 3, characterized in that, The inspection door (3) is equipped with a folding handle (8).

8. A novel tensioning and fixing device for a sampling bucket elevator according to claim 5, characterized in that, The labyrinth bearing housing (5) has a pressure cap (15) fixed at its end.

Images