A coal mine underground belt conveyor receiving and centering device

Abstract

The utility model discloses a kind of coal mine underground belt conveyor receiving material centering device, it is related to coal mine conveying equipment technical field, it includes, receiving bin frame is equipped with flow baffle, flow baffle is fixed with support rod, and the both ends of support rod are movably clamped in receiving bin frame;Angle adjusting device is further provided between flow baffle and receiving bin frame;The front end opening of flow baffle, opening direction is towards to receiving material direction;Flow baffle is below and is provided with split type material guiding device;Split type material guiding device includes material guiding plate, two material guiding plates are oppositely arranged, and form material guiding groove;Under the action of angle adjusting device, the discharge port of flow baffle is always located in the middle of material guiding groove. By this, the utility model is guaranteed by being equipped with flow baffle and buffer and material guiding device, and the centering of the conveyed material, to guarantee the centering of the conveyed material.

Description

Technical Field

[0001] This utility model relates to the technical field of coal mine conveying equipment, specifically to a material receiving and centering device for an underground belt conveyor in a coal mine. Background Technology

[0002] Among the conveying equipment used in underground coal mines, belt conveyors remain the most widely used and prevalent. Traditionally, the transfer and overlap of belt conveyors typically utilize a combination of head funnels, chutes, and guide troughs to transfer materials. Sufficient height difference is required between adjacent conveying systems to accommodate the installation of the head funnels and chutes. However, due to this significant height difference, when materials are being transferred and scattered, the material at the transfer point often fails to be centered, leading to severe belt misalignment and affecting normal material transport and the lifespan of the conveyor belt.

[0003] In the existing technology, there is a patent application document with publication number CN104495339B, entitled "An Automatic Adjustment and Discharge Device for Guided Centering and Double Sealing." This patent document describes a method that uses an adjusting baffle and an electric push rod to adjust the position of the baffle, forcibly pushing the material to the center position to reduce conveyor belt deviation. However, in actual use, this device generally needs to be used in conjunction with a head funnel and a chute. Furthermore, this device, along with the head funnel and chute, is large in volume and weight, and is used in a fixed manner. This requires a large installation space in the underground roadway, especially a sufficiently high height, which is generally not feasible in current coal mine underground roadways. At the same time, due to the special nature of coal mining processes, the mining face needs to be replaced periodically, and the transfer point of the belt conveyor system must also be moved synchronously. Therefore, this transfer scheme involving the head funnel and chute has extremely poor applicability in underground coal mines, and this material transfer method is rarely used in underground coal mines. Utility Model Content

[0004] To overcome the above-mentioned defects, the purpose of this utility model is to provide a material receiving and centering device for a coal mine underground belt conveyor, which can adjust the tilt angle of the guide baffle using an angle adjustment device to ensure material centering and thus meet the centering conveying requirements of the conveying equipment.

[0005] To achieve the above objectives, this utility model provides a material receiving and centering device for a belt conveyor in an underground coal mine, including a receiving bin frame; a guide baffle is installed on the receiving bin frame, and a support rod is fixed on the guide baffle, with both ends of the support rod movably engaged with the receiving bin frame; an angle adjustment device is also provided between the guide baffle and the receiving bin frame; the front end of the guide baffle is open, and the opening direction is towards the material receiving direction; a split-type material guiding device is provided below the guide baffle; the split-type material guiding device includes two guide plates, which are arranged opposite each other to form a material guiding trough; under the action of the angle adjustment device, the outlet of the guide baffle is always located in the middle of the material guiding trough.

[0006] Preferably, the split-type material guiding device further includes a buffer bed, which is disposed below the guide baffle.

[0007] Preferably, the receiving bin frame is further provided with conveying rollers, the conveying rollers including a buffer roller group and a return roller group, the buffer roller group being disposed on both sides of the buffer bed, and the return roller group being disposed below the buffer roller group.

[0008] Preferably, the buffer roller group comprises three buffer rollers, and each buffer roller is equipped with a plurality of buffer rubber rings.

[0009] Preferably, the angle adjustment device includes an adjustment seat and an adjustment screw. The adjustment seat is rotatably connected to the receiving hopper frame via a rotating shaft. One end of the adjustment screw is screwed to the adjustment seat, and the other end is hinged to the rear end of the guide baffle.

[0010] Preferably, the top of the receiving hopper frame is fixed with multiple adjustment slots, and the two ends of the support rod are respectively engaged in one of the adjustment slots. A limit stop is also provided between the support rod and the adjustment slot.

[0011] Preferably, the flow guide baffle is wider at the top and narrower at the bottom, and multiple wear-resistant liners are also fixed inside the flow guide baffle.

[0012] Preferably, the bottom of the receiving hopper frame is also provided with a lifting seat, and a plurality of adjustment holes are provided between the receiving hopper frame and the lifting seat, with limit bolts inserted into the adjustment holes.

[0013] Preferably, the outer side of the receiving hopper frame is also equipped with multiple protective nets.

[0014] Preferably, the receiving bin frame is provided with a return roller mounting seat, the return roller mounting seat is provided with a correction groove, and the return roller group is disposed in one of the correction grooves.

[0015] The beneficial technical effects achieved by this utility model after adopting the above technical solution are as follows:

[0016] 1. Due to the installation of a flow guide baffle with a fixed support rod, the two ends of which are movably engaged with the receiving hopper frame. An angle adjustment device is installed between the flow guide baffle and the receiving hopper frame. The position of the flow guide baffle and the tilt angle of the discharge port can be adjusted according to the speed of the material being thrown, ensuring that the receiving area of ​​the flow guide baffle is as large as possible and reducing the large-scale diffusion of granular material to both sides. The angle of the bottom discharge port is aligned with the guide chute, ensuring that the material falls more accurately into the center of the guide chute. This significantly reduces the probability of deviation during transportation. Even without any material assist pushing equipment, the material can still be transported in a centered manner, thus reducing wear on the split-type guide device.

[0017] 2. Because a buffer bed is installed, and buffer roller groups are set on both sides of the buffer bed, the material falling onto the conveyor belt will be buffered by the buffer bed and buffer roller groups before continuing to be conveyed. Therefore, it can prevent large pieces of material from cracking the conveyor belt and effectively extend the service life of the conveyor belt. At the same time, this utility model achieves efficient and rapid assembly and disassembly through modular design, so as to adapt to the changes and movements of underground mining faces in coal mines.

[0018] 3. Since a lifting seat is also installed at the bottom of the receiving hopper frame, the height range of the receiving hopper frame can be adjusted by the lifting seat. This not only adapts to underground roadways of various heights, but also ensures that the receiving area and receiving position of the guide baffle are as centered as possible by adjusting the height, thereby reducing the dispersion of dust. Attached Figure Description

[0019] Figure 1 This is a schematic diagram showing the overall (hidden conveyor belt) usage state of this utility model;

[0020] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0021] Figure 3 This is a front view of the present invention;

[0022] Figure 4 yes Figure 3 A schematic diagram of the three-dimensional structure;

[0023] Figure 5 yes Figure 3 The left view;

[0024] Figure 6 yes Figure 3 A three-dimensional structural diagram from another angle;

[0025] Figure 7 yes Figure 6Enlarged view at point B in the middle;

[0026] In the diagram,

[0027] 1. Receiving bin frame; 11. Adjusting trough; 12. Lifting seat; 13. Protective net; 14. Return idler roller mounting seat; 15. Correction trough; 16. Guide plate; 17. Buffer bed; 18. Guide trough;

[0028] 2. Flow guide baffle; 21. Support rod; 22. Wear-resistant liner;

[0029] 3. Angle adjustment device; 31. Adjusting screw; 32. Adjusting seat;

[0030] 4. Split-type material guiding device; 41. Buffer roller; 42. Return roller. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.

[0032] See Figures 1-7 This utility model provides a material receiving and centering device for a belt conveyor in an underground coal mine, including a receiving hopper frame 1; a guide baffle 2 is provided on the receiving hopper frame 1, and a support rod 21 is fixed on the guide baffle 2, with both ends of the support rod 21 movably engaged with the receiving hopper frame 1; this utility model generally needs to be used in conjunction with a head funnel, mainly for receiving materials conveyed from the head funnel. To clearly show the internal parts, the conveyor belt and part of the protective net 13 are hidden in the accompanying drawings.

[0033] The support rod 21 is used to adjust the position of the guide baffle 2. After the machine is started, the material dropping speed is generally fixed. The position of the guide baffle 2 is adjusted according to the material dropping speed to make the guide baffle 2 closer to or further away from the material receiving port, so as to ensure that the receiving area is as large as possible. This can reduce the overflow of coal. At the same time, in order to better protect the equipment, a protective net 13 is generally installed on the outside of the receiving bin frame 1.

[0034] An angle adjustment device 3 is also provided between the flow guide baffle 2 and the receiving bin frame 1; the front end of the flow guide baffle 2 is open, and the opening direction is towards the receiving direction. The bottom of the flow guide baffle 2 is the discharge port, and the discharge port is provided with a split-type material guiding device 4; under the action of the angle adjustment device 3, the discharge port of the flow guide baffle 2 is always located in the middle of the split-type material guiding device 4; the angle adjustment device 3 is used to adjust the angle of the discharge port of the flow guide baffle 2. The angle adjustment device 3 of this utility model adopts an adjusting screw 31 and an adjusting seat 32. The adjusting seat 32 is rotatably connected to the receiving bin frame 1 through a rotating shaft. One end of the adjusting screw 31 is screwed to the adjusting seat 32, and the other end is hinged to the rear end of the flow guide baffle 2. In use, the discharge port is generally located in the middle of the split-type material guiding device 4 by adjusting the extension length of the adjusting screw 31 on the adjusting seat 32.

[0035] The receiving hopper frame 1 is also equipped with guide plates 16, and two oppositely arranged guide plates 16 form a guide trough 18. A conveyor belt is installed at the bottom of the guide trough 18 to concentrate the material to the center of the conveyor belt. In use, it is generally only necessary to adjust the tilt angle of the guide plates 16 and fix them to ensure that the material falls to the center position of the material trough 18. Due to the extremely high hardness of coal-like materials, a buffer bed 17 and conveyor rollers need to be installed in the split-type guide device 4. The conveyor belt covers the conveyor rollers and the buffer bed 17. When the material in the guide baffle 2 falls, the conveyor belt is directly deformed by the material, and the buffer bed 17 is used to absorb the vibration. Rubber rings are fitted on the buffer rollers 41 to form several buffer gaps, which can also achieve buffering and shock absorption to ensure the safety of the conveyor belt. Since welding is not allowed underground due to the need for handling, split-type guide devices 4 are mostly used to facilitate later disassembly and assembly.

[0036] The material of the buffer bed 17 is generally rubber with a certain thickness. The buffer idler group 41 is set on both sides of the buffer bed 17. The height of the return idler group 42 is generally lower than that of the buffer idler group 41. When the conveyor belt returns, it is only affected by its own weight. The return idler group 42 consists of two horizontally arranged return idlers, which only need to support the conveyor belt and correct the angle of the return conveyor belt.

[0037] The receiving hopper frame 1 of this utility model has multiple adjusting slots 11 fixed on its top. The two ends of the support rod 21 are respectively engaged in one of the adjusting slots 11. A limit stop is also provided between the support rod 21 and the adjusting slot 11. There are generally three adjusting slots 11. The slower the material dropping speed, the closer it should be to the receiving position, and vice versa. This is mainly used to ensure that the receiving area is as large as possible.

[0038] The flow guide baffle 2 of this utility model is wider at the top and narrower at the bottom, and multiple wear-resistant liners 22 are fixed inside the flow guide baffle 2. The wear-resistant liners 22 are used to improve the service life of the workpiece and reduce wear, especially in later maintenance, where only the wear-resistant liners 22 need to be replaced directly.

[0039] The bottom of the receiving hopper frame 1 of this utility model is also provided with a lifting seat 12. Several adjustment holes are provided between the receiving hopper frame 1 and the lifting seat 12, and limit bolts are inserted into the adjustment holes. Since the height of the tunnel is limited, the height of the receiving hopper frame 1 can be adjusted through the adjustment holes and the adjustment seat 32. After the height adjustment is completed, it can be fixed with the limit bolts, adapting to various usage environments. To facilitate movement, the two sides of the adjustment seat 32 in the direction of movement are generally tilted upwards at a certain angle to reduce travel resistance.

[0040] The receiving hopper frame 1 of this utility model is provided with a return idler roller mounting base 14, which is provided with a correction groove 15. The return idler roller assembly 42 is disposed in one of the correction grooves 15. One end of the return idler roller assembly 42 is fixed, and the other end is placed in one of the correction grooves 15. The return idler roller mounting base 14 is generally provided with three correction grooves 15. When the conveyor belt returns, the tilt angle of the return idler roller assembly 42 can be adjusted in time for correction.

[0041] Of course, there may be other embodiments of this utility model. Without departing from the spirit and essence of this utility model, those skilled in the art can make various corresponding changes and modifications based on this utility model, but these corresponding changes and modifications should all fall within the protection scope of the appended claims of this utility model.

Claims

1. A material receiving and centering device for a belt conveyor in an underground coal mine, characterized in that, Including receiving bin racks; The receiving bin frame is equipped with a flow guide baffle, and a support rod is fixed on the flow guide baffle. The two ends of the support rod are movably engaged with the receiving bin frame. An angle adjustment device is also provided between the flow guide baffle and the receiving bin frame; the front end of the flow guide baffle is open, and the opening direction is towards the receiving direction; A split-type material guiding device is provided below the flow guide baffle; the split-type material guiding device includes a material guiding plate, and the two material guiding plates are arranged opposite each other to form a material guiding groove; Under the action of the angle adjustment device, the discharge port of the guide baffle is always located in the middle of the guide trough.

2. The material receiving and centering device for an underground belt conveyor in a coal mine according to claim 1, characterized in that, The split-type material guiding device also includes a buffer bed, which is disposed below the flow guide baffle.

3. The material receiving and centering device for an underground belt conveyor in a coal mine according to claim 2, characterized in that, The receiving hopper frame is also equipped with conveying rollers, which include a buffer roller group and a return roller group. The buffer roller group is located on both sides of the buffer bed, and the return roller group is located below the buffer roller group.

4. The material receiving and centering device for an underground belt conveyor in a coal mine according to claim 3, characterized in that, The buffer roller group includes three buffer rollers, and each buffer roller is equipped with multiple buffer rubber rings.

5. The material receiving and centering device for an underground belt conveyor in a coal mine according to claim 1, characterized in that, The angle adjustment device includes an adjustment seat and an adjustment screw. The adjustment seat is rotatably connected to the receiving hopper frame via a rotating shaft. One end of the adjustment screw is screwed to the adjustment seat, and the other end is hinged to the rear end of the guide baffle.

6. The material receiving and centering device for an underground belt conveyor in a coal mine according to claim 1, characterized in that, The top of the receiving hopper frame is fixed with multiple adjustment slots, and the two ends of the support rod are respectively engaged in one of the adjustment slots. A limit stop is also provided between the support rod and the adjustment slot.

7. The material receiving and centering device for an underground belt conveyor in a coal mine according to claim 6, characterized in that, The flow guide baffle is wider at the top and narrower at the bottom, and multiple wear-resistant liners are also fixed inside the flow guide baffle.

8. The material receiving and centering device for an underground belt conveyor in a coal mine according to claim 1, characterized in that, The bottom of the receiving hopper frame is also provided with a lifting seat, and several adjustment holes are provided between the receiving hopper frame and the lifting seat, with limit bolts inserted into the adjustment holes.

9. The material receiving and centering device for an underground belt conveyor in a coal mine according to claim 1, characterized in that, The outer side of the receiving hopper frame is also equipped with multiple protective nets.

10. The material receiving and centering device for an underground belt conveyor in a coal mine according to claim 3, characterized in that, The receiving hopper frame is provided with a return roller mounting seat, the return roller mounting seat is provided with a correction groove, and the return roller group is disposed in the correction groove.

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