Coal conveyor

Abstract

The present application relates to a coal feeder in the field of belt conveyors, which is introduced here by citing the working conditions of a coal mine. The equipment includes a mounting frame, an angle adjustment device and a feeder unit mounted on the mounting frame, wherein the angle adjustment device can adjust the angle between the feeder unit and the horizontal plane; the structure of the traditional belt conveyor is changed, and the belt changing cylinder is controlled to contract, so that the conveying belt becomes loose, and then the upper movable part is disassembled to control the limit cylinder to retract, so as to extract the supporting pad, and the old conveying belt can be disassembled, saving the time for changing the belt; when the coal contains water, the water-guiding rear cover plate and the upward angle of the feeder unit are adjusted according to the water content to achieve coal-water separation, thereby solving the problem of coal-rock flow that is prone to occur when the coal contains water.

Description

Technical Field

[0001] The present application belongs to the field of belt conveyor equipment, and in particular to a coal conveyor. Background Art

[0002] Belt conveyors are popular among users in coal mines, steelmaking, power plants, docks, etc. for their simplicity, convenience, speed, durability, etc. They play an important role in transportation in coal mining enterprises.

[0003] Belt conveyors have always been composed of motor reducers, pulleys, rollers, belts, and fixed frames. There has been no innovation and replacement, and they are obsessed with the old model. However, enterprises use them frequently, and belts and related components are easily damaged. Fixed installation brings too many hidden dangers to some places of use. It brings too much trouble to maintenance personnel and causes great losses to enterprises.

[0004] Coal mining companies are the ones that use the most belt conveyors. All coal from mining to mining cannot be separated from the conveying of belt conveyors, and belt conveyors play an important role. At the same time, the damage to the belt is also huge. If a belt conveyor is damaged during production, all processes will stop running. Maintenance workers will immediately organize emergency repairs to restore operations as quickly as possible, but some insurmountable reasons will lead to failure to quickly restore, thus causing significant losses to the company. For example, the belt of the belt conveyor is a wearing part of the conveyor. It will often be damaged for some reasons during operation. Due to the main structure of the belt conveyor, the on-site environment, and the placement location, it is difficult for maintenance personnel to complete it quickly. It often takes dozens of people half a day or even a whole day to replace the belt, causing serious pauses in the rest of the production process.

[0005] After the coal is mined underground, it is lifted and transported to the large funnel-type coal storage bunker on the ground. The bottom of the coal storage bunker is controlled by a gate, and the parallel coal conveyor under the gate is used for the first transportation. The parallel coal conveyor transports the coal to the belt conveyor, and then continues to transport it to the next belt conveyor, and then connects to the required places for transportation. In order to increase the stacking volume at the required place, the upward degree of the belt conveyor needs to be raised, so each group of belt conveyors will increase the upward slope. When the coal is dry, it maintains good gravity friction with the belt and will be smoothly transported to the destination.

[0006] However, during the mining period, coal mines will also have water-coal phenomenon. Under uncertain circumstances, the water content of the mined coal is extremely high. The hoist will also lift the water and coal together and transport them to the coal storage bunker. At this time, the coal water passes through the parallel gate and the parallel coal conveyor and is transported to the first belt conveyor. Due to the mixing of water and coal, coal sludge is formed. The upward slope of the belt conveyor causes the coal sludge to slip when it is brought to a certain height by the belt conveyor, but the parallel coal conveyor continues to output, which eventually leads to a serious coal-rock flow accident. Even if the on-site workers take immediate measures to shut down the machine, the serious bunker collapse will instantly submerge the mechanical equipment and the on-site site, bringing serious labor intensity to the cleaning workers, causing the entire mining operation to stop, causing significant losses to the coal mine, and endangering the lives of the on-site workers. Summary of the invention

[0007] Purpose of the invention: This application aims to solve the technical defects mentioned in the background technology and propose a coal conveyor.

[0008] Technical solution: A coal feeder comprises a mounting frame, an angle adjustment device and a feeder unit mounted on the mounting frame, wherein the angle adjustment device can adjust the angle between the feeder unit and a horizontal plane.

[0009] Preferably, the feeding unit comprises a support base, a belt unit mounted on the support base and a driving device for driving the belt unit, and the belt unit comprises a front roller, a rear roller driven by the driving device and a feeding belt connecting the front and rear rollers.

[0010] Preferably, it also includes two upper fixed brackets, material guide side plates are installed on both sides of the mounting frame, the two upper fixed brackets are respectively connected to the two material guide side plates, and the front roller is installed between the two upper fixed brackets; the angle adjustment device is a hydraulic lifting cylinder, one end of the hydraulic lifting cylinder is hinged to the mounting frame, and the other end is hinged to the end of the support base away from the front roller.

[0011] During normal operation, the support base is in a horizontal state, and the conveyor belt is also in a horizontal state. When the staff finds that the water content of the coal coming down from the hopper is high, the hydraulic lifting cylinder is controlled to extend, so that the conveyor belt forms an angle with the horizontal plane. The height of the rear drum is lowered, so that the water can flow toward the rear drum and the coal can be transported toward the front drum.

[0012] Preferably, the driving device includes a power unit, a driving sprocket driven by the power unit, a driven sprocket installed at the rotating shaft of the rear roller, and a chain connected between the driving sprocket and the driven sprocket; the feeding unit also includes a supporting vertical plate fixed to a supporting seat, a supporting horizontal plate fixedly connected to the supporting vertical plate, and two support groups, the support group includes a fixed support fixedly connected to the supporting horizontal plate, a movable support capable of moving relative to the fixed support, and a belt changing cylinder connected between the fixed support and the movable support for driving the movable support; the front roller is installed between the two fixed supports, and the rear roller is installed between the two movable supports.

[0013] Preferably, the power unit is an electric reducer.

[0014] When replacing the conveyor belt, the belt-changing cylinder is controlled to retract, which shortens the distance between the front and rear rollers, loosens the conveyor belt, and facilitates replacement of the conveyor belt.

[0015] Preferably, a plurality of roller units are installed between the two support groups, and the roller units include two roller mounting frames and a roller body installed between the two roller mounting frames.

[0016] Preferably, there are a plurality of roller units between the two fixed supports.

[0017] Preferably, there are a plurality of roller units between the two movable supports.

[0018] Preferably, both ends of the front roller are connected to the front bearing seat through the front bearing; the two front bearing seats are respectively installed on two upper fixed brackets, one of the two upper fixed brackets includes an upper fixed part and an upper movable part connected to the upper fixed part, and the upper movable part has an upper mounting through hole for mounting the front bearing seat; the upper fixed part and the upper movable part are hinged or detachably connected.

[0019] The support seat is hoisted under the mounting frame by a hydraulic lifting cylinder and an upper fixed bracket. The upper fixed plate is used to fix and support the front bearing seat. One of the upper fixed brackets is configured to be hinged or detachable, so that the conveyor belt can be easily disassembled by flipping the upper movable part or disassembling the upper movable part.

[0020] In some embodiments, a first locking unit is provided between the upper fixed portion and the upper movable portion for locking the positions of the upper fixed portion and the upper movable portion.

[0021] In some embodiments, the locking unit is a locking bolt.

[0022] Preferably, it further comprises two vertical poles, the top ends of which are fixed with lower fixing brackets, and the two front bearing seats are respectively installed at the two lower fixing brackets.

[0023] When the conveyor is running, vibration will occur. In addition to the upper fixed bracket, a lower fixed bracket is provided to provide auxiliary support for the front bearing seat to prevent all the weight from being borne by the upper fixed bracket, thereby preventing accidents.

[0024] Preferably, one of the two lower fixed brackets includes a lower fixed portion and a lower movable portion, the lower movable portion having a lower mounting through hole capable of mounting the front bearing seat; the lower fixed portion and the lower movable portion are hingedly or detachably connected.

[0025] Therefore, the conveyor belt can be easily replaced by moving the lower movable part.

[0026] In some embodiments, a latch hole is provided at the end of the bearing seat and located outside the installation position of the upper and lower movable parts, and a safety latch is inserted into the latch hole.

[0027] The upper and lower movable parts are sleeved on the front bearing seat, and the upper and lower movable parts bear the gravity of the feeding device in the vertical direction. Moreover, the feeding device feeds materials from the back to the front without shaking left and right. Therefore, even if the upper movable part and the upper fixed part, and the lower movable part and the lower fixed part are hinged, they are stable and will not fall off. The structure of the above-mentioned safety pin can further increase stability.

[0028] In some embodiments, a second locking unit is provided between the lower fixed portion and the lower movable portion to lock the positions of the lower fixed portion and the lower movable portion.

[0029] In some embodiments, the second locking unit is a locking bolt.

[0030] Preferably, it also includes a supporting pad and a limiting mechanism, the supporting pad is installed between the supporting seat and the supporting cross plate for supporting the supporting cross plate, the limiting mechanism includes a limiting cylinder, a limiting locking buckle installed at the supporting seat through a locking buckle rotating shaft, and a limiting locking block installed at the supporting cross plate, one end of the limiting cylinder is hinged to the supporting seat, and the other end is hinged to the limiting locking buckle, and the limiting locking buckle has a limiting locking slot that cooperates with the limiting locking block.

[0031] When the limit cylinder is extended, the limit locking buckle rotates around the locking buckle rotating axis until it is engaged with the limit locking block. At this time, the limit locking buckle is located on the outside of the support pad and limits it. When the belt needs to be removed, the limit cylinder is controlled to retract, and the limit locking buckle is separated from the limit locking block until the limit locking buckle gives up its position, allowing the support pad to be pulled out from between the support seat and the support cross plate.

[0032] Preferably, the support pad is provided with a limiting baffle.

[0033] The setting of the limit baffle can limit the support pad block at the edge of the support cross plate, preventing it from being inserted into the deep gap between the support cross plate and the support seat, thereby achieving a good support effect.

[0034] The conveyor belt is supported by rollers so that it can better transport materials. The part of the conveyor belt located below the rollers passes through the gap between the supporting horizontal plate and the supporting seat. Only one side of the supporting horizontal plate is fixedly connected to the supporting seat through the supporting vertical plate, and the other side is supported by the supporting pad. When the belt needs to be replaced, you only need to open the limiting mechanism and take out the supporting pad to facilitate the replacement of the conveyor belt.

[0035] Preferably, side baffle units are installed at both of the material guide side plates, and the side baffle units include a base plate fixedly connected to the material guide side plate and a rotating plate hinged to the base plate at one end, the base plate has a limiting column, and the rotating plate has an arc-shaped through groove cooperating with the limiting column; the bottom end of the rotating plate can abut against the conveyor belt.

[0036] Preferably, a water filter grille and a water guide rear cover plate that can be in close contact with the water filter grille are installed at the mounting frame, and the water guide rear cover plate is provided with a rear cover plate driving unit for driving the water guide rear cover plate to rotate.

[0037] Preferably, the rear cover plate driving unit comprises a crank connected to the water-conducting rear cover plate, a fixed shaft passing through the crank, and a rear cover plate driving hydraulic telescopic rod for driving the crank.

[0038] Preferably, the fixed shaft is installed on a mounting frame, and the mounting frame is also provided with a mounting plate. One end of the rear cover plate driving the hydraulic telescopic rod is hinged to the mounting plate, and the other end is hinged to the crank.

[0039] Preferably, it also includes a water diversion plate connected to the water filter grid and a water receiving trough located below the water diversion plate;

[0040] Preferably, the water receiving trough is installed between the two material guiding side plates and is located behind the conveyor belt, and the length of the water receiving trough is greater than the width of the support seat.

[0041] When there is no water in the coal, the water-guiding rear cover is close to the bottom surface of the water filter grid to prevent small coal pieces and coal ash from leaking out;

[0042] When the water content in the coal is not high, the water guide rear cover is opened to form a small gap with the water filter grid. The coal is filtered by the water filter grid, and the water and coal sludge (mixed with coal ash and water) pass through the water filter grid and are guided to the water guide plate by the water guide rear cover, and flow into the water receiving trough along the water guide plate, and then flow out from both ends of the water receiving trough and flow into the pit dug on the ground;

[0043] When the water content in the coal is higher, the water-guiding rear cover is fully opened, and holes are provided at the bottom of the support seat. Water and coal slime pass through the water-filtering grid and then leak out from the holes. At this time, the angle adjustment device can be started to adjust the angle of the conveyor belt according to the situation, so that the height of the rear drum is lowered, so that the mixture of water and coal slime can flow toward the rear drum, helping the discharge of water and coal slime (the coal continues to be conveyed toward the front drum), and the side baffle unit will also be unfolded, close to the conveyor belt, continue to play the role of guiding the material, and prevent water and coal slime from leaking from the side.

[0044] When the amount of water is larger and it is too slow to discharge water and coal slime from the rear end of the conveyor belt, the height of the rear drum is lowered. After the rotating plate of the side baffle unit has rotated to the maximum stroke (the arc-shaped groove will limit the rotating plate), the height of the rear drum is continued to be lowered so that the side baffle unit is suspended in the air, forming a gap between the conveyor belt and the conveyor belt, so that the coal slime, water and some small coal blocks can also leak out from the gap. Only large coal blocks are transported, and the fallen coal slime will be collected and processed by the staff later.

[0045] A coal conveying system comprises a hopper and any one of the above-mentioned coal conveyors, wherein the hopper is located above a mounting frame, and a hydraulic gate valve capable of closing a feed opening of the hopper is installed on the mounting frame.

[0046] Beneficial effect: By changing the structure of the traditional belt conveyor and controlling the belt changing cylinder to contract, the conveyor belt becomes loose, and then the upper movable part is disassembled to control the limit cylinder to retract, so as to pull out the supporting pad, and the old conveyor belt can be disassembled. It is no longer necessary to disassemble the belt tensioning screws, motor reducer, pulley bearing seat, pulley, roller bracket, roller and other structures to disassemble the belt, thus saving the time of belt changing.

[0047] When the coal contains water, the water-guiding rear cover plate and the upward angle of the feeding unit are adjusted according to the water content to achieve coal-water separation, thereby solving the problem of coal-rock flow that is prone to occur when the coal contains water. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 This is a schematic diagram of the front structure of this application;

[0049] Figure 2 This is a schematic diagram of the structure on the back of this application;

[0050] Figure 3 This is a top view schematic diagram of the feeding unit of the present application;

[0051] Figure 4 This is a schematic diagram of the installation structure of the supporting horizontal plate, the support group and the limiting mechanism of the present application;

[0052] Figure 5This is a schematic diagram of the split structure of the supporting horizontal plate, the support group and the limiting mechanism of the present application;

[0053] Figure 6 This is a schematic diagram of the split structure of the material guide side plate and the side baffle unit of the present application;

[0054] Figure 7 A side view of the installation structure of the material guide side plate and the side baffle unit of the present application;

[0055] Figure 8 This is a schematic diagram of the installation structure of the water-conducting rear cover plate and the rear cover plate driving unit of the present application;

[0056] Fig. 9 This is a schematic diagram of the installation structure of the water-guiding rear cover plate and the rear cover plate driving unit of the present application from another angle;

[0057] Fig.10 This is a schematic diagram of the water filter grid structure of this application;

[0058] Fig.11 This is a schematic diagram of the installation structure of the mounting frame, angle adjustment device, rear cover plate driven hydraulic telescopic rod and hydraulic gate valve of the present application;

[0059] Fig.12 It is a structural schematic diagram of Example 3;

[0060] 1. Mounting frame; 2. Angle adjustment device; 3. Support seat; 4. Belt unit; 4.1. Front roller; 4.2. Rear roller; 4.3. Feed belt; 5. Driving device; 5.1. Power unit; 5.2. Driving sprocket; 5.3. Driven sprocket; 5.4. Chain; 6. Upper fixed bracket; 6.1. Upper fixed part; 6.2. Upper movable part; 6.3. Upper mounting through hole; 7. Material guide side plate; 8. Support vertical plate; 9. Support horizontal plate; 10. Support group; 10.1. Fixed support; 10.2. Movable support; 10.3. Belt changing cylinder; 11. Front bearing seat; 12. Vertical pole; 13. Lower fixed bracket; 13.1. Lower fixed part; 13.2. Lower movable part; 13.3. Lower mounting through hole; 14. Support Support pad; 14.1, limit baffle; 15; limit mechanism; 15.1, limit cylinder; 15.2, locking buckle rotating shaft; 15.3, limit locking buckle; 15.3.1, limit locking slot; 15.4, limit locking block; 16; side baffle unit; 16.1, base plate; 16.1.1, limit column; 16.2, rotating plate; 16.2.1, arc groove; 17, water filter grid; 18, water guide rear cover; 19, rear cover drive unit; 19.1, crank; 19.2, fixed shaft; 19.3, rear cover drive hydraulic telescopic rod; 20, water diversion plate; 21, water receiving trough; 22, hopper; 23, roller mounting frame; 24, roller body; 25, hydraulic gate valve; 26, latch hole; 27; safety latch. DETAILED DESCRIPTION

[0061] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0062] Embodiment 1:

[0063] like Figure 1-10 A coal feeder shown includes a mounting frame 1, an angle adjustment device 2, and a feeder unit mounted on the mounting frame 1, wherein the angle adjustment device 2 can adjust the angle between the feeder unit and a horizontal plane.

[0064] The feeding unit includes a support seat 3, a belt unit 4 installed on the support seat 3 and a driving device 5 for driving the belt unit 4, wherein the belt unit 4 includes a front roller 4.1, a rear roller 4.2 driven by the driving device 5 and a feeding belt 4.3 connecting the front and rear rollers; it also includes two upper fixed brackets 6, both sides of the mounting frame 1 are equipped with material guide side plates 7, the two upper fixed brackets 6 are respectively connected to the two material guide side plates 7, and the front roller 4.1 is installed between the two upper fixed brackets 6; the angle adjustment device 2 is a hydraulic lifting cylinder, one end of which is connected to the hydraulic lifting cylinder The mounting frame 1 is hinged, and the other end is hinged to the end of the support seat 3 away from the front roller 4.1; the driving device 5 includes a power unit 5.1, a driving sprocket 5.2 driven by the power unit 5.1, a driven sprocket 5.3 installed at the rotating shaft of the rear roller 4.2, and a chain 5.4 connected between the driving sprocket 5.2 and the driven sprocket 5.3; the feeding unit also includes a supporting vertical plate 8 fixed to the support seat 3, a supporting horizontal plate 9 fixedly connected to the supporting vertical plate 8, and two support groups 10, the support group 10 includes a fixed support 10.1 fixedly connected to the supporting horizontal plate 9, and a fixed support 10.1 that can be relative to the fixed support The movable support 10.2 for moving the seat 10.1 and the belt changing cylinder 10.3 connected between the fixed support 10.1 and the movable support 10.2 for driving the movable support 10.2; the front roller 4.1 is installed between the two fixed supports 10.1, and the rear roller 4.2 is installed between the two movable supports 10.2; the power unit 5.1 is an electric reducer; a plurality of roller units are installed between the two support groups 10, and the roller unit includes two roller mounting frames 23 and a roller body 24 installed between the two roller mounting frames 23; the two fixed supports 10.1 are connected to each other. There are multiple roller units between the two movable supports 10.2; there are multiple roller units between the two movable supports 10.2; both ends of the front roller 4.1 are connected to the front bearing seat 11 through the front bearing; the two front bearing seats 11 are respectively installed at two upper fixed brackets 6, one of the two upper fixed brackets 6 includes an upper fixed part 6.1 and an upper movable part 6.2 connected to the upper fixed part 6.1, and the upper movable part 6.2 has an upper mounting through hole 6.3 on which the front bearing seat 11 can be installed; the upper fixed part 6.1 and the upper movable part 6.2 are hinged or detachably connected.

[0065] In addition, the coal feeder of the present application also includes a support pad 14 and a limit mechanism 15, the support pad 14 is installed between the support seat 3 and the support cross plate 9 to support the support cross plate 9, the limit mechanism 15 includes a limit cylinder 15.1, a limit locking buckle 15.3 installed at the support seat 3 through a locking buckle rotating shaft 15.2, and a limit locking block 15.4 installed at the support cross plate 9, one end of the limit cylinder 15.1 is hinged to the support seat 3, and the other end is hinged to the limit locking buckle 15.3, the limit The locking buckle 15.3 has a limiting locking slot 15.3.1 that cooperates with the limiting locking block 15.4; the support pad 14 has a limiting baffle 14.1; the two material guide side plates 7 are both installed with side baffle units 16, and the side baffle units 16 include a base plate 16.1 fixedly connected to the material guide side plate 7 and a rotating plate 16.2 hinged to the base plate 16.1 at one end, the base plate 16.1 has a limiting column 16.1.1, and the rotating plate 16.2 has a The arc-shaped through groove 16.2.1; the bottom end of the rotating plate 16.2 can abut against the conveying belt 4.3; the mounting frame 1 is equipped with a water filter grille 17 and a water guide rear cover plate 18 that can be close to the water filter grille 17, and the water guide rear cover plate 18 has a rear cover plate driving unit 19 for driving the water guide rear cover plate 18 to rotate; the rear cover plate driving unit 19 includes a crank 19.1 connected to the water guide rear cover plate 18, a fixed shaft 19.2 passing through the crank 19.1, and a rear cover plate driving unit 19 for driving the crank 19.1. A hydraulic telescopic rod 19.3; the fixed shaft 19.2 is installed on the mounting frame 1, and the mounting frame 1 also has a mounting plate. The rear cover drives one end of the hydraulic telescopic rod 19.3 to be hinged to the mounting plate, and the other end to be hinged to the crank 19.1; it also includes a water guide plate 20 connected to the water filter grille 17 and a water receiving trough 21 located below the water guide plate 20; the water receiving trough 21 is installed between the two material guide side plates 7 and is located behind the conveyor belt 4.3, and the length of the water receiving trough 21 is greater than the width of the support seat 3.

[0066] Working process: Start the power unit, i.e. the electric reducer, to drive the rear drum to rotate through the chain, thereby driving the front drum to rotate through the conveyor belt. At this time, the conveyor belt is in a horizontal state. Open the hydraulic gate valve, and the coal falls from the hopper through the discharge port. When the coal does not contain water, the water-guiding rear cover plate is close to the bottom surface of the water filter grid to prevent small coal blocks and coal ash from leaking out. The coal slides along the upper surface of the water filter grid to the conveyor belt and is transported along the guide side plate.

[0067] When the water content in the coal is not high, the water guide rear cover is opened to form a small gap with the water filter grid. The coal is filtered by the water filter grid, and the coal sludge passes through the water filter grid and is guided to the water guide plate by the water guide rear cover, flows into the water receiving trough along the water guide plate, and then flows out from both ends of the water receiving trough into the pit dug on the ground;

[0068] When the water content in the coal is higher, the water-guiding rear cover is fully opened, and holes are set at the bottom of the support seat. Water and coal slime pass through the water-filtering grid and then leak out from the holes. After the coal slime leaks into the pit, it will be collected and processed by staff. At this time, the angle adjustment device can be started to adjust the angle of the conveyor belt according to the situation, so that the angle of the rear drum is lowered to help the discharge of water and coal slime. The side baffle unit will also unfold accordingly, close to the conveyor belt, and continue to play the role of guiding the material.

[0069] When the amount of water is larger and it is too slow to discharge water and coal slime from the rear end of the conveyor belt alone, the end of the support seat on which the electric reducer is installed continues to sink. After the rotating plate of the side baffle unit has rotated to the maximum stroke, the upward angle of the belt continues to increase, so that the side baffle unit is suspended in the air, forming a gap between the side baffle unit and the conveyor belt, so that coal slime, water and some small coal blocks can also leak out of the gap, and only large coal blocks are transported.

[0070] When the conveyor belt needs to be replaced, the belt-changing cylinder is controlled to retract, which shortens the distance between the front and rear rollers, and the conveyor belt becomes loose (here the belt-changing cylinder only needs a small retraction distance to loosen the conveyor belt for easy disassembly, and the electric reducer and the rear roller are connected by a chain, and the chain has a margin in length, so the position movement of the rear roller will not affect the transmission between the electric reducer and the rear roller). The conveyor belt is then easily disassembled by flipping over or removing the upper movable part. At the same time, the limit cylinder is controlled to retract, and the limit locking buckle is separated from the limit locking block until the limit locking buckle allows The old conveyor belt can be removed by pulling the supporting pad out of the support seat and the supporting cross plate. In some embodiments, belt guide wheels are installed on both sides of the belt, and a belt guide wheel is installed under each of the two fixed supports. When the belt is tightened, the belt will be stuck between the two guide wheels to ensure that the belt will not deviate during operation. When the belt is loosened, it will naturally fall off the belt guide wheel without affecting the removal of the belt. Then install the new conveyor belt, reverse the above steps, fix the upper movable part and the supporting pad, and finally extend the belt changing cylinder to tighten the belt.

[0071] Example 2

[0072] Embodiment 2 also discloses a coal conveyor. The difference between Embodiment 2 and Embodiment 1 is that Embodiment 2 includes two vertical poles 12, and a lower fixed bracket 13 is fixed to the top of the vertical pole 12. Two front bearing seats 11 are respectively installed on the two lower fixed brackets 13. One of the two lower fixed brackets 13 includes a lower fixed portion 13.1 and a lower movable portion 13.2. The lower movable portion 13.2 has a lower mounting through hole 13.3 capable of mounting the front bearing seat 11. The lower fixed portion 13.1 and the lower movable portion 13.2 are hinged or detachably connected.

[0073] When the conveyor is running, vibration will occur. In addition to the upper fixed bracket, the lower fixed bracket can provide auxiliary support for the front bearing seat to prevent all the weight from being borne by the upper fixed bracket, thereby preventing accidents.

[0074] When removing the belt, fold or remove the upper movable part, and then fold or remove the lower movable part together. When installing the belt, the upper and lower movable parts are put on the front bearing seat together to increase stability.

[0075] The upper and lower movable parts are sleeved on the front bearing seat. The upper and lower movable parts bear the gravity of the feeding device in the vertical direction. Moreover, the feeding device feeds materials from back to front and will not shake left and right. Therefore, even if the upper movable part and the upper fixed part, and the lower movable part and the lower fixed part are hinged, they will not fall off. For the sake of safety, a pin hole can be opened at the end of the bearing seat and located on the outside of the installation position of the upper and lower movable parts, and then a pin is inserted into the pin hole to prevent the upper movable part from falling off.

[0076] Example 3

[0077] Embodiment 3 also discloses a coal conveyor. The difference between Embodiment 3 and Embodiments 1 and 2 is that the upper movable part 6.2 and the upper fixed part 6.1 of Embodiment 3 are hinged, the lower movable part 13.2 and the lower fixed part 13.1 are hinged, and a pin hole 26 is opened at the end of the bearing seat 11 and on the outside of the installation position of the upper and lower movable parts 13.2, and a safety pin 27 is inserted into the pin hole 26.

[0078] The upper and lower movable parts are sleeved on the front bearing seat, and the upper and lower movable parts bear the gravity of the feeding device in the vertical direction. Moreover, the feeding device feeds materials from the back to the front without shaking left and right. Therefore, even if the upper movable part and the upper fixed part, and the lower movable part and the lower fixed part are hinged, they are stable and will not fall off. The structure of the above-mentioned latch can further increase stability.

[0079] Example 4

[0080] Example 4 discloses a coal conveying system including a hopper 22 and the coal conveyor described in Example 1, 2 or 3, wherein the hopper 22 is located above a mounting frame 1, and a hydraulic gate valve 25 capable of closing a discharge port of the hopper 22 is installed on the mounting frame 1.

[0081] The hopper is used for unloading materials, and the hydraulic gate valve can control the opening and closing of the unloading port.

[0082] Although the present invention has been illustrated and described with respect to the preferred embodiments, it will be appreciated by those skilled in the art that various changes and modifications may be made to the present invention without departing from the scope of the present invention as defined by the claims.

Claims

1. A coal conveyor, characterized in that: It comprises a mounting frame, an angle adjustment device and a feeding unit mounted on the mounting frame, wherein the angle adjustment device can adjust the angle between the feeding unit and the horizontal plane; The feeding unit comprises a support seat, a belt unit mounted on the support seat and a driving device for driving the belt unit, wherein the belt unit comprises a front roller, a rear roller driven by the driving device and a feeding belt connecting the front and rear rollers; The coal feeder also includes two upper fixed brackets, both sides of the mounting frame are equipped with material guide side plates, the two upper fixed brackets are respectively connected to the two material guide side plates, and the front roller is installed between the two upper fixed brackets; the angle adjustment device is a hydraulic lifting cylinder, one end of the hydraulic lifting cylinder is hinged to the mounting frame, and the other end is hinged to the end of the support base away from the front roller; The driving device includes a power unit, a driving sprocket driven by the power unit, a driven sprocket installed at the rotating shaft of the rear roller, and a chain connected between the driving sprocket and the driven sprocket; the feeding unit also includes a supporting vertical plate fixed to the supporting seat, a supporting horizontal plate fixedly connected to the supporting vertical plate, and two support groups, the support group includes a fixed support fixedly connected to the supporting horizontal plate, a movable support capable of moving relative to the fixed support, and a belt changing cylinder connected between the fixed support and the movable support for driving the movable support; the front roller is installed between the two fixed supports, and the rear roller is installed between the two movable supports; It also includes a supporting pad and a limiting mechanism, the supporting pad is installed between the supporting seat and the supporting cross plate for supporting the supporting cross plate, the limiting mechanism includes a limiting oil cylinder, a limiting locking buckle installed at the supporting seat through a locking buckle rotating shaft, and a limiting locking block installed at the supporting cross plate, one end of the limiting oil cylinder is hinged to the supporting seat, and the other end is hinged to the limiting locking buckle, the limiting locking buckle has a limiting locking slot that cooperates with the limiting locking block; the supporting pad is provided with a limiting baffle.

2. The coal conveyor according to claim 1, characterized in that: A plurality of roller units are installed between the two support groups, and the roller units include two roller mounting frames and a roller body installed between the two roller mounting frames.

3. The coal conveyor according to claim 1, characterized in that: Both ends of the front roller are connected to the front bearing seat through the front bearing; the two front bearing seats are respectively installed on two upper fixed brackets, one of the two upper fixed brackets includes an upper fixed part and an upper movable part connected to the upper fixed part, and the upper movable part is provided with an upper mounting through hole for mounting the front bearing seat; the upper fixed part and the upper movable part are hinged or detachably connected.

4. The coal conveyor according to claim 3, characterized in that: It also includes two vertical poles, with lower fixed brackets fixed on the top ends of the vertical poles, and two front bearing seats are respectively installed on the two lower fixed brackets, one of the two lower fixed brackets includes a lower fixed part and a lower movable part, and the lower movable part has a lower mounting through hole capable of mounting the front bearing seat; the lower fixed part and the lower movable part are hinged or detachably connected.

5. The coal conveyor according to claim 1, characterized in that: Side baffle units are installed on both of the material guide side plates, and the side baffle units include a base plate fixedly connected to the material guide side plate and a rotating plate hinged to the base plate at one end, the base plate has a limiting column, and the rotating plate has an arc-shaped through groove that cooperates with the limiting column; the bottom end of the rotating plate can abut against the conveyor belt.

6. The coal conveyor according to claim 1, characterized in that: The mounting frame is provided with a water filter grille and a water guide rear cover plate which can be closely attached to the water filter grille. The water guide rear cover plate is provided with a rear cover plate driving unit for driving the water guide rear cover plate to rotate.

7. The coal conveyor according to claim 6, characterized in that: The rear cover plate driving unit comprises a crank connected to the water-conducting rear cover plate, a fixed shaft passing through the crank, and a rear cover plate driving hydraulic telescopic rod for driving the crank.

8. The coal conveyor according to claim 6, characterized in that: It also includes a water guide plate connected with the water filter grid and a water receiving trough located below the water guide plate.

9. A coal conveying system, characterized in that: It comprises a hopper and the coal conveyor according to any one of claims 1 to 8, wherein the hopper is located above a mounting frame, and a hydraulic gate valve capable of closing a discharge port of the hopper is installed on the mounting frame.

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