Flexible multi-anti-blocking scraper conveying device

Abstract

A flexible multi-anti-blocking scraper conveying device belongs to the field of agricultural machinery and comprises a rack, a flexible scraper conveying system, a multi-anti-blocking system and an overload self-protection power driving system, the multi-anti-blocking system comprises an anti-blocking fan and an anti-blocking roller, and the flexible multi-anti-blocking scraper conveying device is characterized in that the rack is connected with the anti-blocking fan through a bolt; the rack is connected with the unblocking roller through a bearing; the flexible scraper conveying system is matched with the overload self-protection power driving system and the unblocking roller through friction; and the overload self-protection power driving system is connected with the rack through a bearing. The technical problem to be solved by the invention is to provide the flexible multi-anti-blocking scraper conveying device suitable for easily-flowing materials under the condition of large-dip-angle conveying.

Description

Technical Field

[0001] The invention relates to a flexible multiple anti-blocking scraper conveying device, belonging to the field of agricultural machinery. Background Art

[0002] Scraper conveyors have irreplaceable advantages in conveying distance and conveying capacity, and are widely used in bulk material handling operations in agriculture, mining, food and chemical industries, including feeding, transfer, loading and unloading. Efficient and stable performance, wear control, prevention of material blockage and overflow, and minimization of maintenance costs have always been the goals pursued in the optimization and design of scraper conveyors. However, during the large-angle conveying process of easy-flowing materials, materials tend to flow back and overflow between the conveyor belt and the drive roller, causing blockage, reducing the smoothness of the scraper conveying and increasing the conveying load. Long-term operation will cause serious damage to the scraper conveyor and greatly reduce the service life of the scraper. In addition, when the scraper conveyor works in some complex operating environments, the scraper conveying chamber is easily stuck by foreign objects, which directly causes irreversible damage to the scraper conveyor. Some scholars pointed out that the scraper conveyor accounts for 70% of the maintenance cost of the entire conveying system. It can be seen that a stable and reliable scraper conveyor is essential to ensure efficient material transportation and reduce costs. In the public literature, Mao Qinghua et al. proposed an intelligent identification method for chain faults of coal mine scraper conveyors based on the improved RT-DETR algorithm, which is used to realize the identification and detection of chain breakage faults and wear faults of scraper conveyors; Xia et al. explored the main factors affecting the wear of scraper conveyor chutes based on the discrete element method. In the public patents, CN208181997U announced a buried scraper conveyor equipped with a residual material cleaning device, aiming to solve the problem that materials in buried scraper conveyors are easily retained on the top of the scraper chain; CN208199648U announced a scraper conveyor chain break protection device, which is mainly used for timely shutdown protection of scraper conveyors when the chain breaks. The current scraper conveyor device is mainly a rigid conveying system composed of a chute and a scraper chain. Although it is equipped with an active fault detection and alarm system, due to the lack of reliable passive adaptive protection devices, broken shafts, scraper fractures, desoldering, chain jamming, chain breakage, wear and tear are still one of the main problems facing the scraper conveyor equipment industry. In addition, under special working conditions such as conveying easy-flowing materials at large angles, the accumulation of materials in the scraper transmission system further challenges the stability of the scraper conveying device. At present, there is no scraper conveying device with flexible overload protection and multiple anti-blocking under the conditions of conveying easy-flowing materials at large angles, which limits the development of the scraper conveying industry and related equipment. Therefore, it is necessary to invent a flexible multiple anti-blocking scraper conveying device. Summary of the invention

[0003] In order to overcome the difficulty of how to design a flexible overload protection and multiple anti-blocking scraper conveying device suitable for conveying easy-flowing materials at large angles, the present invention provides a flexible multiple anti-blocking scraper conveying device, which is suitable for flexible overload protection and multiple anti-blocking of the scraper under conditions of conveying easy-flowing materials at large angles; the flexible scraper conveying system adopted by the device improves the situation of the conveyor being stuck by foreign objects to a certain extent through the elastic deformation of the rubber scraper and the rubber conveyor belt, realizes passive obstacle avoidance, and avoids damage to the scraper conveying device; the multiple anti-blocking system adopted by the device avoids the accumulation of materials in the scraper transmission system through a combination of pneumatic and spiral conveying; the overload self-protection system used in the device can realize the slippage of the active roller and the rubber conveyor belt when the conveying device is overloaded, thereby cutting off the transmission of power, protecting the structure and transmission system of the scraper device from damage.

[0004] The technical solution adopted by the present invention to solve its technical problem is: A flexible multiple anti-blocking scraper conveying device comprises a frame, a flexible scraper conveying system, a multiple anti-blocking system and an overload self-protection system, wherein the multiple anti-blocking system comprises a clearing fan and a clearing roller, and is characterized in that: the frame is connected to the clearing fan by bolts, the frame is connected to the clearing roller by bearings, the flexible scraper conveying system is frictionally matched with the overload self-protection system and the clearing roller, and the overload self-protection system is connected to the frame by bearings.

[0005] As a further limitation of the present technical solution, the flexible scraper conveying system includes: a rubber conveyor belt, a rubber scraper, and a scraper connecting seat. The scraper connecting seat is connected to the rubber conveyor belt by bolts, and the rubber scraper is connected to the scraper connecting seat by bolts, which facilitates replacement of the rubber scraper after wear.

[0006] As a further limitation of the technical solution, the rubber scrapers are arranged at equal intervals on the rubber conveyor belt, and the installation interval of the rubber scrapers can be changed according to actual operation requirements. The equal-interval installation of the rubber scrapers is used for continuous and uniform conveying of materials.

[0007] As a further limitation of the present technical solution, the multiple anti-blocking system includes: a clearing fan, a clearing driven roller, a clearing tensioning roller, and a tensioning roller movable arm. The clearing fan is connected to the frame by bolts, the clearing driven roller is connected to the frame by bearings; the clearing tensioning roller is connected to the tensioning roller movable arm by bearings.

[0008] As a further limitation of the present technical solution, the airflow generated by the blockage clearing fan acts on the gap between the blockage clearing driven roller and the blockage clearing tensioning roller to blow away the materials overflowing and falling back on both sides of the scraper conveyor device.

[0009] As a further limitation of the technical solution, one side of the movable arm of the tensioning roller is hinged to the frame, and the other side is connected to the frame through a spring strut. The tension between the clearing tensioning roller and the rubber conveyor belt can be adjusted by adjusting the size of the spring preload in the spring strut.

[0010] As a further limitation of the present technical solution, the surfaces of the clearing driven roller and the clearing tensioning roller are provided with clearing spirals which are symmetrically arranged with opposite rotation directions. The shape and arrangement of the clearing spirals are not limited to a single form. When the roller rotates, the material accumulated in the gap of the rubber conveyor belt will be discharged from the scraper conveying device.

[0011] As a further limitation of the present technical solution, the overload self-protection system includes: an active roller and a conveyor belt anti-deviation roller, the active roller is connected to the frame through a bearing, a driven gear is installed on the shaft end of the active roller, the active roller obtains power through gear transmission, the active roller realizes the rotation of the rubber conveyor belt through the friction between the active roller and the rubber conveyor belt, the surface of the active roller is provided with friction ribs arranged at intervals, and its shape and arrangement are not limited to a single form, the friction rib intervals are used to avoid the bolt end faces on the surface of the rubber conveyor belt, to avoid the friction ribs from colliding and rubbing with the bolts, causing loosening and damage to the bolts, when the rubber conveyor belt is overloaded, the active roller and the rubber conveyor belt slip, thereby protecting the scraper conveying device structure.

[0012] As a further limitation of the technical solution, the conveyor belt anti-deviation roller is welded to the frame, and two conveyor belt anti-deviation rollers symmetrically staggered in the upper and lower directions are installed on the frames on both sides of the rubber conveyor belt, which play a role in horizontal limiting the rubber conveyor belt during operation.

[0013] The beneficial effects of the present invention are as follows: a flexible multiple anti-blocking scraper conveying device is suitable for flexible overload protection and multiple anti-blocking of the scraper under the condition of large-angle conveying of easy-flowing materials; the flexible scraper conveying system adopted by the device improves the situation of the conveyor being stuck by foreign objects to a certain extent through the elastic deformation of the rubber scraper and the rubber conveyor belt, realizes passive obstacle avoidance, and avoids damage to the scraper conveying device; the multiple anti-blocking system adopted by the device avoids the accumulation of materials in the scraper transmission system through a combination of pneumatic and spiral conveying; the overload self-protection system used by the device can realize the slippage of the active roller and the rubber conveyor belt when the conveying device is overloaded, thereby cutting off the transmission of power and protecting the scraper device structure from damage. The present invention has strong operability, low cost and obvious effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention is further described below in conjunction with the accompanying drawings.

[0015] Figure 1 It is an axonometric diagram of the overall structure of a flexible multiple anti-blocking scraper conveying device.

[0016] Figure 2 The present invention is a flexible scraper conveying system diagram of a flexible multiple anti-blocking scraper conveying device.

[0017] Figure 3 The invention relates to a flexible scraper diagram of a flexible multiple anti-blocking scraper conveying device.

[0018] Figure 4 The utility model relates to a blockage-clearing driven roller diagram of a flexible multi-blockage-proof scraper conveying device.

[0019] Figure 5 It is an active roller diagram of a flexible multiple anti-blocking scraper conveying device.

[0020] In the figure, 1. frame, 2. clearing fan, 3. rubber conveyor belt, 4. scraper connecting seat, 5. rubber scraper, 6. clearing spiral, 7. clearing driven roller, 8. clearing tensioning roller, 9. tensioning roller movable arm, 10. conveyor belt anti-deviation roller, 11. driving roller. DETAILED DESCRIPTION

[0021] A specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific implementation.

[0022] like Figure 1-Figure 5 As shown, the present invention relates to a flexible multiple anti-blocking scraper conveying device, comprising a frame 1, a flexible scraper conveying system, a multiple anti-blocking system and an overload self-protection system, wherein the multiple anti-blocking system comprises a clearing fan 2 and a clearing roller, the frame 1 is connected to the clearing fan 2 by bolts, the frame 1 is connected to the clearing roller by bearings, the flexible scraper conveying system is frictionally matched with the overload self-protection system and the clearing roller, and the overload self-protection system is connected to the frame 1 by bearings.

[0023] The flexible scraper conveying system comprises a rubber conveyor belt 3, a scraper connecting seat 4, and a rubber scraper 5. The scraper connecting seat 4 is connected to the rubber conveyor belt 3 by bolts, and the rubber scraper 5 is connected to the scraper connecting seat 4 by bolts, so that the rubber scraper 5 can be replaced after being worn.

[0024] The rubber scrapers 5 are arranged at equal intervals on the rubber conveyor belt 3. The installation interval of the rubber scrapers 5 can be changed according to actual operation requirements. The equal-interval installation of the rubber scrapers 5 is used for continuous and uniform conveying of materials.

[0025] The multiple anti-blocking system includes a clearing fan 2, a clearing driven roller 7, a clearing tensioning roller 8, and a tensioning roller movable arm 9. The clearing fan 2 is connected to the frame 1 by bolts, the clearing driven roller 7 is connected to the frame 1 by bearings; the clearing tensioning roller 8 is connected to the tensioning roller movable arm 9 by bearings.

[0026] The airflow generated by the blockage clearing fan 2 acts on the gap between the blockage clearing driven roller 7 and the blockage clearing tensioning roller 8 to blow away the materials overflowing and falling from both sides of the scraper conveyor.

[0027] One side of the tensioning roller movable arm 9 is hinged to the frame 1, and the other side is connected to the frame 1 through a spring strut. The tension between the clearing tensioning roller 8 and the rubber conveyor belt 3 can be adjusted by adjusting the size of the spring preload in the spring strut.

[0028] The surfaces of the clearing driven roller 7 and the clearing tensioning roller 8 are provided with clearing screws 6 which are symmetrically arranged with opposite rotation directions. The shape and arrangement of the clearing screws 6 are not limited to a single form. When the rollers rotate, the materials accumulated in the gap of the rubber conveyor belt 3 will be discharged from the scraper conveying device.

[0029] The self-protection system includes an active roller 11 and a conveyor belt anti-deviation roller 10. The active roller 11 is connected to the frame 1 through a bearing. A driven gear is installed on the shaft end of the active roller 11. The active roller 11 obtains power through gear transmission. The active roller 11 realizes the rotation of the rubber conveyor belt 3 through the friction between the active roller 11 and the rubber conveyor belt 3. The surface of the active roller 11 is provided with friction ribs arranged at intervals, and its shape and arrangement are not limited to a single form. The friction ribs are spaced to avoid the bolt end faces on the surface of the rubber conveyor belt 3 to prevent the friction ribs from colliding and rubbing with the bolts, causing loosening and damage to the bolts. When the rubber conveyor belt 3 is overloaded, the active roller 11 and the rubber conveyor belt 3 slip, thereby protecting the scraper conveying device structure.

[0030] The conveyor belt anti-deviation roller 10 is welded to the frame 1, and two conveyor belt anti-deviation rollers 10 symmetrically staggered in an upper and lower arrangement are installed on the frames on both sides of the rubber conveyor belt 3, which play a role in horizontal limiting the rubber conveyor belt 3 during operation.

[0031] Taking the transportation of cyperus rotundus excavated materials as an example, the working process of the present invention is as follows: the active roller 11 drives the rubber conveyor belt 3 to rotate through friction, and the cyperus rotundus excavated materials fed to the bottom of the scraper conveyor device are continuously transported upward under the drive of the rubber scraper 5; during the transportation process, the clearing fan 2 works to blow the cyperus rotundus excavated materials overflowing from both sides of the scraper conveyor device away from the scraper conveyor device, thereby reducing the accumulation at the clearing roller; at the same time, the rubber conveyor belt 3 drives the clearing driven roller 7 and the clearing tensioning roller 8 to rotate through friction, and under the action of the clearing spiral 6 on the roller surface, the accumulated materials in the gap of the rubber conveyor belt 3 are discharged from the scraper conveyor device in time, thereby reducing the workload of the scraper conveyor device; when hard foreign matter is fed into the scraper conveyor device, the rubber scraper 5 is driven by the rubber conveyor belt 3 to rotate ... The scraper 5 will undergo elastic deformation and passively avoid foreign objects to avoid structural damage to the rubber scraper 5; when large foreign objects are fed into the scraper conveying device, the clearing tension roller 8 breaks through the spring preload, the clearing tension roller 8 contracts, the rubber conveyor belt 3 relaxes, and the conveying chamber increases, thereby avoiding structural damage to the scraper conveying device due to the jamming of large foreign objects; in extreme cases, when the scraper conveying device is jammed, the friction between the active roller 11 and the rubber conveyor belt 3 exceeds the critical value and triggers slippage, thereby avoiding failure of the structure and transmission system of the scraper conveying device; when the scraper conveying device is working, the conveyor belt anti-deflection rollers 10 installed on both sides of the scraper conveying device contact with the rubber conveyor belt 3 and rotate therewith, thereby avoiding horizontal deviation of the rubber conveyor belt 3.

[0032] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected, and the scope of the present invention to be protected is defined by the attached claims and their equivalents.

Claims

1. A flexible multiple anti-blocking scraper conveying device, comprising a frame 1, a flexible scraper conveying system, a multiple anti-blocking system and an overload self-protection system, wherein the multiple anti-blocking system comprises a clearing fan 2 and a clearing roller, characterized in that: The frame 1 is connected to the clearing fan 2 by bolts, the frame 1 is connected to the clearing roller by bearings, the flexible scraper conveying system is frictionally matched with the overload self-protection system and the clearing roller, and the overload self-protection system is connected to the frame 1 by bearings.

2. A flexible multi-anti-blocking scraper conveying device according to claim 1, characterized in that: The flexible scraper conveying system comprises a rubber conveyor belt 3, a scraper connecting seat 4, and a rubber scraper 5. The scraper connecting seat 4 is connected to the rubber conveyor belt 3 by bolts, and the rubber scraper 5 is connected to the scraper connecting seat 4 by bolts, so that the rubber scraper 5 can be replaced after being worn.

3. A flexible multi-anti-blocking scraper conveying device according to claim 1, characterized in that: The rubber scrapers 5 are arranged at equal intervals on the rubber conveyor belt 3. The installation interval of the rubber scrapers 5 can be changed according to actual operation requirements. The equal-interval installation of the rubber scrapers 5 is used for continuous and uniform conveying of materials.

4. A flexible multi-anti-blocking scraper conveying device according to claim 1, characterized in that: The multiple anti-blocking system includes a clearing fan 2, a clearing driven roller 7, a clearing tensioning roller 8, and a tensioning roller movable arm 9. The clearing fan 2 is connected to the frame 1 by bolts, the clearing driven roller 7 is connected to the frame 1 by bearings; the clearing tensioning roller 8 is connected to the tensioning roller movable arm 9 by bearings.

5. The flexible multi-anti-blocking scraper conveying device according to claim 1 is characterized in that: The airflow generated by the blockage clearing fan 2 acts on the gap between the blockage clearing driven roller 7 and the blockage clearing tensioning roller 8 to blow away the materials overflowing and falling from both sides of the scraper conveyor.

6. The flexible multi-anti-blocking scraper conveying device according to claim 1, characterized in that: One side of the tensioning roller movable arm 9 is hinged to the frame 1, and the other side is connected to the frame 1 through a spring strut. The tension between the clearing tensioning roller 8 and the rubber conveyor belt 3 can be adjusted by adjusting the size of the spring preload in the spring strut.

7. The flexible multi-anti-blocking scraper conveying device according to claim 1, characterized in that: The surfaces of the clearing driven roller 7 and the clearing tensioning roller 8 are provided with clearing screws 6 which are symmetrically arranged with opposite rotation directions. The shape and arrangement of the clearing screws 6 are not limited to a single form. When the rollers rotate, the materials accumulated in the gap of the rubber conveyor belt 3 will be discharged from the scraper conveying device.

8. The flexible multi-anti-blocking scraper conveying device according to claim 1, characterized in that: The overload self-protection system includes an active roller 11 and a conveyor belt anti-deviation roller 10. The active roller 11 is connected to the frame 1 through a bearing. A driven gear is installed on the shaft end of the active roller 11. The active roller 11 obtains power through gear transmission. The active roller 11 realizes the rotation of the rubber conveyor belt 3 through the friction between the active roller 11 and the rubber conveyor belt 3. The surface of the active roller 11 is provided with friction ribs arranged at intervals, and its shape and arrangement are not limited to a single form. The friction rib intervals are used to avoid the bolt end faces on the surface of the rubber conveyor belt 3 to prevent the friction ribs from colliding and rubbing with the bolts, causing loosening and damage to the bolts. When the rubber conveyor belt 3 is overloaded, the active roller 11 and the rubber conveyor belt 3 slip, thereby protecting the scraper conveying device structure.

9. The flexible multi-anti-blocking scraper conveying device according to claim 1, characterized in that: The conveyor belt anti-deviation roller 10 is welded to the frame 1, and two conveyor belt anti-deviation rollers 10 symmetrically staggered in an upper and lower arrangement are installed on the frames on both sides of the rubber conveyor belt 3, which play a role in horizontal limiting the rubber conveyor belt 3 during operation.

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