Chain jumping prevention device of scraper conveyor

Abstract

A chain jumping prevention device of a scraper conveyor relates to the field of scraper conveyors and comprises a support, the support comprises a lower fixing plate, a center plate is mounted on the lower fixing plate, a bent plate is connected onto the center plate and comprises a horizontal plate, the horizontal plate is connected with a vertical plate, and the vertical plate is connected with a chain jumping prevention device. The horizontal plate and the vertical plate are each provided with a coal removing mechanism, and the two coal removing mechanisms abut against a chain of the scraper conveyor. The support and the bending plate are stable and reliable in structure and can adapt to complex and changeable working environments. The coal removing mechanism can tightly abut against the chain through flexible adjustment of the sliding block and the screw rod, accumulated coal is effectively removed, and the chain is prevented from jumping or deviating from a track.

Description

Technical Field

[0001] The utility model relates to the technical field of scraper conveyors, in particular to a chain-jumping prevention device for scraper conveyors. Background Art

[0002] As an important means of transportation, the scraper conveyor is widely used in coal mines, chemical mines, metal mines and power plants. It is mainly composed of a head sprocket, a transport box, a scraper chain, a tail sprocket and auxiliary devices. Its working principle is to close the bottom and both sides as a transport box, fix the scraper on the chain as a traction component, and then use the scraper chain to push the coal and other materials to move.

[0003] When the existing scraper conveyor is in the daily production process, the product coal blocks are very easy to get stuck in the chain during the transportation process. When the chain mixed with coal blocks runs to the head sprocket that meshes with it, it cannot mesh smoothly and will cause chain jumping. After chain jumping, the two sides of the scraper are not parallel and the traction force they receive is inconsistent, so the chain is very easy to break. Once the chain breaks, it not only interrupts the normal production order and increases the labor intensity of employees, but also easily causes other production impacts and accidents, seriously endangering the daily safety production of the coal preparation plant. Utility Model Content

[0004] The purpose of the utility model is to solve the problems raised in the above background technology, and then proposes a scraper conveyor anti-chain jumping device.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A scraper conveyor anti-chain jumping device includes a bracket, the bracket includes a lower fixed plate, the lower fixed plate is equipped with a center plate, the center plate is connected to a bending plate, the bending plate includes a horizontal plate, the horizontal plate is connected to a vertical plate, the horizontal plate and the vertical plate are each provided with a group of coal removal mechanisms, and the two groups of coal removal mechanisms are against the chain of the scraper conveyor.

[0007] Furthermore, an arc-shaped connecting plate is provided at the junction of the horizontal plate and the vertical plate.

[0008] Furthermore, the coal removal mechanism includes a slider, a horizontal slide groove is provided on the horizontal plate, a slider is slidably fitted in the horizontal slide groove, a through hole is provided in the middle of the slider, a screw is installed in the through hole, the screw is fixedly connected to the slider by an upper fastening nut and a lower fastening nut, the lower end of the screw is connected to the mounting plate, a support frame is fixedly connected to the mounting plate, a rotating shaft is provided in the support frame, and an extrusion wheel is rotatably connected to the rotating shaft.

[0009] Furthermore, a first plate is provided at the end of the horizontal plate, a through hole is provided on the first plate, a moving rod is slidably fitted in the through hole, a second plate is fixedly connected to the end of the moving rod, the second plate is fixedly connected to the slider, and a flexible spring is provided between the first plate and the second plate.

[0010] Furthermore, the flexible spring is sleeved on the moving rod.

[0011] Furthermore, the chain is composed of a plurality of first chain links and second chain links connected in sequence to form a continuous chain link sequence.

[0012] Furthermore, the first link is vertically connected to the second link.

[0013] Furthermore, the two extrusion wheels respectively abut against the surfaces of the first chain ring and the second chain ring under the action of the flexible spring.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows: the bracket and bending plate structure of the utility model are stable and reliable, and can adapt to complex and changeable working environments; the coal removal mechanism can be tightly pressed against the chain through the flexible adjustment of the slider and the screw, effectively removing the accumulated coal and preventing the chain from jumping or deviating from the track; the buffering and shock-absorbing effect of the flexible spring protects the device from damage by the impact force during operation. Overall, the device significantly improves the operating stability and working efficiency of the scraper conveyor, prolongs the service life of the chain, reduces maintenance costs, and brings substantial benefits to production operations in related fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the mounting plate;

[0017] Wherein: 1 bracket, 11 lower fixing plate, 12 center plate, 13 horizontal plate, 14 vertical plate, 15 arc connection, 21 slider, 22 first plate, 23 second plate, 24 moving rod, 25 flexible spring, 26 screw rod, 27 mounting plate, 28 lower fastening nut, 29 upper fastening nut, 210 support frame, 211 rotating shaft, 212 extrusion wheel, 100 first chain link, 200 second chain link. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. The utility model is further described in combination with the drawings and embodiments:

[0019] like Figure 1-Figure 2 As shown, a chain-jumping prevention device for a scraper conveyor includes a bracket 1, which is a stable foundation for the entire device and bears the main weight of the chain-jumping prevention device and various forces during operation. The bracket includes a lower fixed plate 11, which is fixedly connected to an appropriate part of the scraper conveyor to ensure the stability and safety of the entire device. A center plate 12 is installed on the lower fixed plate, which not only plays a role of connection and support, but also helps to disperse and transmit various forces during operation to ensure the structural integrity of the device. A bending plate is connected to the center plate, and its unique design enables the chain-jumping prevention device to better adapt to the working environment of the scraper conveyor. The bending plate includes a horizontal plate 13, which is connected to a vertical plate 14, and each of the horizontal plate and the vertical plate is provided with a group of coal removal mechanisms, and the two groups of coal removal mechanisms are against the chain of the scraper conveyor. By removing the accumulated coal on the chain, the chain is effectively prevented from jumping or deviating from the track, thereby improving the running stability and working efficiency of the scraper conveyor. This design is not only practical, but also easy to maintain and replace, greatly reducing the cost of use.

[0020] The scheme is refined, and an arc-shaped connecting plate 15 is provided at the junction of the horizontal plate and the vertical plate. This arc-shaped connecting plate not only increases the overall strength of the bending plate, but also makes the device more flexible and reliable when dealing with complex and changeable working conditions. At the same time, its arc-shaped design also helps to reduce stress concentration and increase the service life of the device.

[0021] In at least one embodiment, taking the horizontal plate as an example, the coal removal mechanism includes a slider 21, a horizontal slide groove is provided on the horizontal plate, a slider is slidably fitted in the horizontal slide groove, a through hole is provided in the middle of the slider, a screw 26 is installed in the through hole, and the screw is fixedly connected to the slider through an upper fastening nut 29 and a lower fastening nut 28. This connection method is both stable and convenient to adjust, so that the coal removal mechanism can better adapt to different working environments. The lower end of the screw is connected to the mounting plate 27, and a support frame 210 is fixedly connected to the mounting plate. A rotating shaft 211 is provided in the support frame, and an extrusion wheel 212 is rotatably connected to the rotating shaft. The extrusion wheel is a key component of the coal removal mechanism, which removes the accumulated coal on the chain through rotational friction. This design not only has a good coal removal effect, but also does not cause damage to the chain, thereby ensuring the normal operation of the scraper conveyor.

[0022] Furthermore, a first plate 22 is provided at the end of the horizontal plate, a through hole is provided on the first plate, a moving rod 24 is slidably fitted in the through hole, the end of the moving rod is fixedly connected to a second plate 23, the second plate is fixedly connected to a slider, and a flexible spring 25 is provided between the first plate and the second plate. This connection mode enables the slider to drive the extrusion wheel to move together when moving, thereby maintaining close contact between the coal removal mechanism and the chain.

[0023] In a refinement of the scheme, the flexible spring is sleeved on the moving rod. The flexible spring has the functions of buffering and shock absorption, and can absorb the impact force during operation and protect the device from damage.

[0024] In at least one embodiment, the chain is composed of a plurality of first chain links 100 and second chain links 200 connected in sequence to form a continuous chain link sequence. This structure ensures the stability and performance of the chain.

[0025] The solution is refined, the first chain ring 100 is vertically connected to the second chain ring 200.

[0026] Furthermore, the two extrusion wheels are respectively pressed against the surfaces of the first chain ring 100 and the second chain ring 200 under the action of the flexible spring. By removing the coal accumulation on the chain ring, the chain is effectively prevented from jumping or deviating from the track. This design not only improves the running stability of the scraper conveyor, but also prolongs the service life of the chain.

[0027] Working mode, fix the lower fixed plate 11 of the bracket 1 to the appropriate position of the scraper conveyor. A set of coal removal mechanisms are installed on the horizontal plate and the vertical plate respectively to ensure that these mechanisms can abut against the chain of the scraper conveyor. When the chain of the scraper conveyor is running, the extrusion wheels in the two sets of coal removal mechanisms will abut against the surface of the first chain link 100 and the second chain link 200 of the chain under the action of the flexible spring. The extrusion wheel can effectively remove the accumulated coal on the chain to prevent the chain from jumping or deviating from the track due to the accumulated coal. By adjusting the position of the slider in the horizontal slide and adjusting the upper fastening nut and the lower fastening nut, the pressure of the extrusion wheel on the chain can be changed to adapt to the coal removal requirements under different working conditions. Since the first chain link 100 is vertically connected to the second chain link 200, this structure ensures the stability and use efficiency of the chain, and is also conducive to the extrusion wheel to better remove the accumulated coal. The entire anti-jump chain device is firmly installed on the scraper conveyor through the bracket, which can effectively prevent the chain from jumping and improve the operating stability and work efficiency of the scraper conveyor.

[0028] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions in the specification are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the protection required by the utility model. The scope of protection required by the utility model is defined by the attached claims and their equivalents.

Claims

1. A chain-jump prevention device for a scraper conveyor, characterized in that: It comprises a bracket, which comprises a lower fixed plate, a center plate is installed on the lower fixed plate, a bending plate is connected to the center plate, the bending plate comprises a horizontal plate, the horizontal plate is connected to a vertical plate, a group of coal removal mechanisms are respectively provided on the horizontal plate and the vertical plate, and the two groups of coal removal mechanisms are against the chain of the scraper conveyor.

2. The chain-jumping prevention device for a scraper conveyor according to claim 1, characterized in that: An arc-shaped connecting plate is provided at the junction of the horizontal plate and the vertical plate.

3. A chain-jumping prevention device for a scraper conveyor according to claim 1 or 2, characterized in that: The coal removal mechanism includes a slider, a horizontal slide groove is provided on the horizontal plate, a slider is slidably fitted in the horizontal slide groove, a through hole is provided in the middle of the slider, a screw is installed in the through hole, the screw is fixedly connected to the slider by an upper fastening nut and a lower fastening nut, the lower end of the screw is connected to the mounting plate, a support frame is fixedly connected to the mounting plate, a rotating shaft is provided in the support frame, and an extrusion wheel is rotatably connected to the rotating shaft.

4. The chain-jump prevention device for a scraper conveyor according to claim 3, characterized in that: A first plate is provided at the end of the horizontal plate, a through hole is provided on the first plate, a moving rod is slidably fitted in the through hole, a second plate is fixedly connected to the end of the moving rod, the second plate is fixedly connected to the slider, and a flexible spring is provided between the first plate and the second plate.

5. The chain-jump prevention device for a scraper conveyor according to claim 4, characterized in that: The flexible spring is sleeved on the moving rod.

6. The chain-jump prevention device for a scraper conveyor according to claim 3, characterized in that: The chain is composed of a plurality of first chain links and second chain links connected in sequence to form a continuous chain link sequence.

7. The chain-jump prevention device for a scraper conveyor according to claim 6, characterized in that: The first link is vertically connected to the second link.

8. The chain-jump prevention device for a scraper conveyor according to claim 7, characterized in that: The two extrusion wheels are respectively pressed against the surfaces of the first chain ring and the second chain ring under the action of the flexible spring.

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