Chain protection device of scraper

Abstract

The utility model provides a chain protection device of a scraper conveyor, and relates to the technical field of coal conveying, the chain protection device comprises a scraper conveyor body, the scraper conveyor body comprises a rack, a plurality of scrapers, a chain, a driving chain wheel, a driven chain wheel, a protection mechanism, a plurality of monitoring devices and a driving motor, and the driving chain wheel and the driven chain wheel are rotationally installed at the two ends of the rack correspondingly; the chain is arranged on the driving chain wheel and the driven chain wheel in a sleeving mode, the multiple scraping plates are fixedly arranged on the chain, the driving motor drives the driving chain wheel to rotate, the protection mechanism is located on one side of the chain and fixedly arranged on the rack, and the multiple monitoring devices are fixedly arranged on the rack. The chain protection assemblies at the two ends of the broken position of the chain can fix the chain, the whole chain is prevented from falling off, and damage to the scraper caused by chain breakage is reduced.

Description

Technical Field

[0001] This application relates to the technical field of coal conveying, and more particularly, to a chain protection device for a scraper conveyor. Background Art

[0002] The scraper conveyor, hereinafter referred to as the scraper machine, is one of the main transportation equipment in the coal preparation plant. The sprocket of the scraper machine getting stuck by foreign objects and jumping the chain is one of the common faults of the scraper machine; the chain jumping of the sprocket of the scraper machine will cause the two chains of the double-side chain on the side of the scraper machine to be out of sync, which may further cause the chain to deform, and in severe cases, the chain may be broken, resulting in equipment damage.

[0003] If situations such as the scraper bar or the chain breaking occur and the shutdown cannot be detected in time, it will cause serious damage to the equipment, resulting in the scraper machine being jammed, increasing the maintenance difficulty and maintenance time, thus affecting the normal operation of the equipment, restricting production, and causing huge losses to the company. Therefore, a chain protection device for a scraper machine is provided to monitor and protect the scraper machine, minimizing the losses. Summary of the Invention

[0004] The purpose of the embodiments of this application is to provide a chain protection device for a scraper machine, which can solve the technical problem of chain protection.

[0005] The embodiments of this application provide a chain protection device for a scraper machine, including a scraper machine body. The scraper machine body includes a frame, a plurality of scrapers, a chain, a driving sprocket, a driven sprocket, a protection mechanism, a plurality of monitoring devices, and a driving motor. The driving sprocket and the driven sprocket are respectively rotatably installed at both ends of the frame. The chain is sleeved on the driving sprocket and the driven sprocket. A plurality of the scrapers are fixedly arranged on the chain. The driving motor drives the driving sprocket to rotate. The protection mechanism is located beside the chain and is fixedly arranged on the frame. A plurality of the monitoring devices are fixedly arranged on the frame.

[0006] Further, the protection mechanism includes two sets of corner end protection components and multiple sets of chain protection components. The multiple sets of chain protection components are arranged on the chain. The two sets of corner end protection components are located on one side of the driving sprocket and the driven sprocket.

[0007] Further, the chain protection component includes two abutting rotating wheels, a clamping sprocket, and a ratchet pawl component. The abutting rotating wheels and the clamping sprocket are both rotatably installed on the frame. The two abutting rotating wheels are arranged below the chain. The clamping sprocket is connected to the upper part of the chain. The clamping sprocket is located above the middle of the two abutting rotating wheels. The ratchet pawl component is connected to the rotating end of the clamping sprocket.

[0008] Further, the corner-end protection assembly includes an arc-shaped plate, a sliding rod, a fixed block, a contact plate, and a spring. One end of the sliding rod is fixed to the arc-shaped plate, and the other end of the sliding rod is slidably connected to the fixed block. The contact plate is fixedly arranged on the sliding rod and is located within the fixed block. The spring is sleeved outside the sliding rod, with one end of the spring abutting against the contact plate and the other end of the spring abutting against the fixed block.

[0009] Further, a tactile sensor is also connected to the back of the arc-shaped plate, and the monitoring end of the tactile sensor is connected to the arc-shaped plate.

[0010] Further, a plurality of rollers are rotatably arranged on one side of the arc-shaped plate close to the chain.

[0011] Further, the monitoring device is a proximity switch sensor, and the monitoring device is connected to a controller, and the controller is electrically connected to the proximity switch sensor.

[0012] Further, a protective plate is arranged at the detection end of the monitoring device.

[0013] Advantages of the present utility model:

[0014] The protection mechanism provided by the present utility model includes two groups of corner-end protection assemblies and multiple groups of chain protection assemblies. Through the arrangement of the multiple groups of chain protection assemblies, when a certain part of the chain breaks, the chain protection assemblies at both ends of the broken part of the chain can fix the chain, prevent the entire chain from falling off, and reduce the damage to the scraper conveyor caused by the chain break. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.

[0016] Figure 1 is a schematic structural diagram of an embodiment of the present utility model;

[0017] Figure 2 is a schematic rear view structural diagram of an embodiment of the present utility model;

[0018] Figure 3 is Figure 1 a cross-sectional structural diagram taken along the A-A line of

[0019] Figure 4 is a schematic structural diagram of the corner-end protection assembly of an embodiment of the present utility model.

[0020] The reference numerals are respectively as follows:

[0021] 1. Scraper conveyor body; 11. Frame; 12. Scraper; 13. Chain; 14. Driving sprocket; 15. Driven sprocket; 16. Driving motor; 2. Protection mechanism; 21. Corner end protection assembly; 211. Arc plate; 212. Sliding rod; 213. Fixed block; 214. Contact plate; 215. Spring; 216. Tactile sensor; 217. Roller; 22. Chain protection assembly; 221. Contact roller; 222. Clamping sprocket; 223. Ratchet and pawl assembly; 3. Monitoring device; 31. Protection plate. Detailed implementation manners

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Usually, the components of the embodiments of the present application described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application claimed, but merely represents the selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application.

[0024] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0025] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this application is usually placed when in use. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present application. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be construed as indicating or implying relative importance.

[0026] In addition, terms such as "horizontal", "vertical", "hanging", etc. do not require the components to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0027] In the description of the present application, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0028] The embodiment of the present application discloses a chain protection device for a scraper conveyor.

[0029] Refer to Figures 1-4 , a chain protection device for a scraper conveyor, including a scraper conveyor body 1. The scraper conveyor body 1 includes a frame 11, a plurality of scrapers 12, a chain 13, a driving sprocket 14, a driven sprocket 15, a protection mechanism 2, a plurality of monitoring devices 3, and a driving motor 16. The driving sprocket 14 and the driven sprocket 15 are respectively rotatably installed at both ends of the frame 11. The chain 13 is sleeved on the driving sprocket 14 and the driven sprocket 15. A plurality of scrapers 12 are fixedly arranged on the chain 13. The driving motor 16 drives the driving sprocket 14 to rotate. The protection mechanism 2 is located beside the chain 13, and the protection mechanism 2 is fixedly arranged on the frame 11. A plurality of monitoring devices 3 are fixedly arranged on the frame 11;

[0030] During use, the driving motor 16 drives the driving sprocket 14 to rotate. The driving sprocket 14 rotates to drive the chain 13 to rotate, driving the scraper 12 to convey materials. The protection mechanism 2 monitors the chain 13 and at the same time fixes and protects the chain 13 when it breaks, reducing the damage to the scraper conveyor caused by the breakage of the chain 13.

[0031] Refer to Figures 1-3 , the protection mechanism 2 includes two sets of corner end protection components 21 and multiple sets of chain 13 protection components. The multiple sets of chain 13 protection components are arranged on the chain 13. The two sets of corner end protection components 21 are located on one side of the driving sprocket 14 and the driven sprocket 15; during use, the multiple sets of chain 13 protection components are respectively arranged between the driving sprocket 14 and the driven sprocket 15 for multi-stage protection of the chain 13, and the corner end protection components 21 are used to protect the chain 13 on the driving sprocket 14 and the driven sprocket 15 when the chain breaks.

[0032] Refer to Figures 1-3, the chain 13 protection assembly includes two abutting runners 221, a clamping sprocket 222 and a ratchet pawl assembly 223. The abutting runners 221 and the clamping sprocket 222 are both rotatably mounted on the frame 11. The two abutting runners 221 are arranged below the chain 13, and the clamping sprocket 222 is connected above the chain 13. The clamping sprocket 222 is located above the middle of the two abutting runners 221. The ratchet pawl assembly 223 is connected to the rotating end of the clamping sprocket 222. During use, the chain 13 moves above the abutting runner 221, the clamping sprocket 222 meshes above the chain 13, and the ratchet pawl assembly 223 rotates coaxially with the clamping sprocket 222. The movable direction of the ratchet pawl assembly 223 is the same as the moving direction of the chain 13. When the chain 13 breaks during movement, the ratchet pawl assembly 223 can effectively prevent the clamping sprocket 222 from rotating in the reverse direction, and under the setting of the abutting runner 221, lock the chain 13 to prevent the chain 13 from moving in the reverse direction, resulting in the reverse backflow of the material for a certain distance. At the same time, it can effectively protect the damage to the scraper 12 machine when the chain 13 breaks.

[0033] Refer to Figure 1 , Figure 4 , the corner end protection assembly 21 includes an arc plate 211, a sliding rod 212, a fixing block 213, an abutting plate 214 and a spring 215. One end of the sliding rod 212 is fixed to the arc plate 211, and the other end of the sliding rod 212 is slidably connected to the fixing block 213. The abutting plate 214 is fixedly arranged on the sliding rod 212 and is located inside the fixing block 213. The spring 215 is sleeved outside the sliding rod 212. One end of the spring 215 abuts against the abutting plate 214, and the other end of the spring 215 abuts against the fixing block 213. During use, the arc plate 211 approaches the chain 13 under the setting of the sliding rod 212 and the spring 215, preventing the chain 13 from directly splashing when it breaks on the driving sprocket 14 and the driven sprocket 15. When the chain 13 breaks, the arc plate 211 can abut against the broken chain 13, so that the two broken ends continue to mesh with the driving sprocket 14 and the driven sprocket 15 subsequently, preventing the direct splashing of the chain 13.

[0034] Refer to Figure 4 , a tactile sensor 216 is also connected to the back of the arc plate 211. The monitoring end of the tactile sensor 216 is connected to the arc plate 211. When the chain 13 breaks at the driving sprocket and the driven sprocket 15, the tactile sensor can be hit by the break of the chain 13 and immediately stop driving the driving motor 16 through the controller, effectively preventing the continuous damage after the chain 13 breaks.

[0035] Refer to Figure 4, a plurality of rollers 217 are rotatably arranged on one side of the arc-shaped plate 211 close to the chain 13. The arrangement of the rollers can effectively prevent the broken chain 13 from directly damaging the surface of the arc-shaped plate 211.

[0036] More specifically, the monitoring device 3 is a proximity switch sensor. The monitoring device 3 is connected to a controller, and the controller is electrically connected to the proximity switch sensor. During use, the monitoring device 3 can effectively monitor the chain 13 in transmission in real time. When the chain 13 breaks, it immediately reports to the controller, causing the controller to control the driving motor 16 to stop operating.

[0037] Refer to Figure 1 , a protective plate 31 is arranged at the detection end of the monitoring device 3, which can effectively protect the monitoring device 3 from being damaged by the broken chain 13.

[0038] In this embodiment, a baffle is also arranged between the chain 13 and the scraper 12 to prevent the material from contacting the chain 13, the driving sprocket 14, and the driven sprocket 15, resulting in wear of the chain life.

[0039] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A chain protection device for a scraper, comprising a scraper body, characterized in that: The scraper body includes a frame, multiple scrapers, a chain, a driving sprocket, a driven sprocket, a protection mechanism, multiple monitoring devices and a driving motor. The driving sprocket and the driven sprocket are respectively rotatably installed at two ends of the frame, the chain is mounted on the driving sprocket and the driven sprocket, the multiple scrapers are fixedly arranged on the chain, the driving motor drives the driving sprocket to rotate, the protection mechanism is located beside the chain, and the protection mechanism is fixedly arranged on the frame, and the multiple monitoring devices are fixedly arranged on the frame.

2. A chain protection device for a scraper according to claim 1, characterized in that: The protection mechanism includes two groups of corner end protection components and multiple groups of chain protection components. The multiple groups of chain protection components are arranged on the chain, and the two groups of corner end protection components are located on one side of the driving sprocket and the driven sprocket.

3. A chain protection device for a scraper according to claim 2, characterized in that: The chain protection assembly includes two abutment wheels, a snap-in sprocket and a ratchet pawl assembly. The abutment wheels and the snap-in sprocket are both rotatably mounted on the frame. The two abutment wheels are arranged below the chain, the snap-in sprocket is connected to the top of the chain, the snap-in sprocket is located above the middle of the two abutment wheels, and the ratchet pawl assembly is connected to the rotating end of the snap-in sprocket.

4. A chain protection device for a scraper according to claim 2, characterized in that: The corner end protection assembly includes an arc plate, a sliding rod, a fixed block, an abutment plate and a spring, one end of the sliding rod is fixed to the arc plate, the other end of the sliding rod is slidably connected to the fixed block, the abutment plate is fixedly arranged on the sliding rod, and the abutment plate is located inside the fixed block, the spring is sleeved outside the sliding rod, one end of the spring abuts against the abutment plate, and the other end of the spring abuts against the fixed block.

5. A chain protection device for a scraper according to claim 4, characterized in that: A contact sensor is also connected to the rear of the arc-shaped plate, and a monitoring end of the contact sensor is connected to the arc-shaped plate.

6. A chain protection device for a scraper according to claim 4, characterized in that: A plurality of rollers are rotatably arranged on one side of the arc-shaped plate close to the chain.

7. The chain protection device of a scraper conveyor according to claim 1, characterized in that: The monitoring device is a proximity switch sensor, and the monitoring device is connected to a controller, and the controller is electrically connected to the proximity switch sensor.

8. A chain protection device for a scraper according to claim 7, characterized in that: The detection end of the monitoring device is provided with a protective plate.

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