Following type material receiving and coal smoothing device

Abstract

The utility model discloses an accompanying type material receiving and coal smoothing device, which relates to the technical field of coal mining equipment and comprises a coal blocking trolley and a material receiving groove arranged on the coal blocking trolley, the coal blocking trolley comprises a frame body and walking wheels installed on the left side and the right side of the frame body. The front end of the frame body is fixedly connected to a walking part of a secondary conveying system of the heading machine; the walking wheels run along the ground rail; the front end of the receiving groove is positioned at the bottom of a blanking port of a secondary conveying system of the heading machine, and the rear end of the receiving groove is positioned above a bearing point of a main conveying belt; the coal falls onto the material receiving groove from the material falling opening and then slides downwards to a bearing point of the main conveying belt. The coal blocking trolley is connected with a walking part of a secondary conveying system of the heading machine, so that synchronous movement of the coal blocking trolley and the heading machine is realized. The material receiving groove is obliquely connected with the material falling opening and the bearing point of the main conveying belt, and it is guaranteed that coal can stably and orderly enter the main conveying belt. And collapse and scattering of coal caused by impact are avoided, potential safety hazards are reduced, and the cleaning burden is relieved.

Description

Technical Field

[0001] This utility model relates to the field of coal mining equipment technology, and in particular to an accompanying material receiving and coal conveying device. Background Technology

[0002] During coal mine tunneling operations, the cutting process of the tunneling machine generates a large amount of irregularly shaped lump coal, which then enters the coal conveying system. Especially during the secondary conveyor unloading stage, the load-bearing points of the main conveyor belt directly bear the high-speed impact of the lump coal. This not only threatens the stable operation of the belt but may also lead to accelerated equipment wear and an increased failure rate. Furthermore, during the on-site unloading process, coal colliding and spillage are significant, resulting in a waste of coal resources and increasing on-site safety hazards and cleanup workload. Utility Model Content

[0003] The purpose of this invention is to provide an accompanying coal receiving and guiding device. This device is installed before the coal enters the main conveyor belt to effectively receive and guide the coal, thereby significantly reducing the impact of falling coal on the main conveyor belt, reducing equipment wear, and ensuring that the coal can enter the main conveyor system smoothly and orderly.

[0004] To achieve the above objectives, this utility model provides an accompanying coal receiving device, including a coal-blocking trolley and a receiving trough installed on the coal-blocking trolley; the coal-blocking trolley includes a frame and traveling wheels installed on the left and right sides of the frame; the front end of the frame is fixedly connected to the traveling part of the secondary conveyor system of the tunneling machine; the traveling wheels run along the ground rail; the receiving trough is installed on the frame at an angle downwards, with its front end located at the bottom of the discharge port of the secondary conveyor system of the tunneling machine, and its rear end located above the bearing point of the main conveyor belt; coal falls from the discharge port onto the receiving trough, and then slides downwards to the bearing point of the main conveyor belt.

[0005] With the above structure, the coal-blocking trolley is connected to the traveling section of the tunneling machine's secondary conveyor system, enabling synchronous movement between the trolley and the tunneling machine. The inclined receiving chute connects the material drop outlet of the tunneling machine's secondary conveyor system to the load-bearing point of the main conveyor belt, forming a three-stage coal flow control system of "receiving-slowing-guiding." This avoids the impact of directly falling coal blocks on the load-bearing point of the main conveyor belt, reducing the impact force of falling coal on the main conveyor belt, minimizing equipment wear, and ensuring that coal enters the main conveyor belt smoothly and orderly. Simultaneously, it prevents coal from collapsing and spilling due to impact, avoiding waste of coal resources, reducing on-site safety hazards, and alleviating the burden of cleanup work.

[0006] Preferably, the coal-blocking trolley and the traveling unit are connected by a long positioning clamp; the long positioning clamp has elongated holes along the running direction of the belt; the coal-blocking trolley or at least the traveling unit is slidably installed in the elongated holes. This configuration can adapt to more complex working conditions, adjust the appropriate installation working area, and ensure that the head rotation adjustment of the tunneling machine's secondary transport system 3 is not affected during the tunneling machine's movement.

[0007] Preferably, the traveling wheels have a double-flanged structure. This design provides lateral restraint, effectively preventing the traveling wheels 12 from accidentally detaching from the ground rail when encountering situations such as coal blockage impacts, uneven roadway surfaces, or tunneling machine vibrations. At the same time, the double-flanged design increases the contact area between the wheels and the rails, reducing the risk of equipment center of gravity shifting, and improving overall stability, especially when the tunneling machine generates severe vibrations during cutting operations.

[0008] Preferably, the receiving trough includes a guide plate at the bottom and coal guide plates on the left and right sides of the guide plate; the guide plate has a structure that is wider at the front and narrower at the back, with its minimum width located above the bearing point of the main conveyor belt. This arrangement facilitates coal collection.

[0009] Preferably, the guide plate is an arc-shaped structure that bends towards the main conveyor belt. This design increases the working strength and load-bearing capacity of the arc-shaped structure. At the same time, the arc-shaped surface design makes the material drop more concentrated, effectively preventing the material from splashing everywhere after dropping, thus avoiding material loss and waste.

[0010] Preferably, the receiving chute and the main conveyor belt maintain a 30° angle at all times. At this angle, when coal is dropped into the secondary conveyor system of the tunneling machine, it is buffered by the receiving chute and then smoothly slides onto the main conveyor belt, completely solving the problems of material spillage, coal sludge, and splashing at the secondary conveyor head.

[0011] Preferably, the frame includes a left support and a right support arranged opposite to each other; the left and right supports are fixedly connected by a connecting rod and a cross brace; the connecting rod is located at the top of the rear end of the left and right supports and away from the material discharge port; the cross brace is located in the middle of the left and right supports and at the bottom of the receiving groove, for supporting the receiving groove; the front two sides of the receiving groove are respectively installed on the left or right support; the bottom middle of the receiving groove abuts against the cross brace; an angle steel extending in the left and right direction is provided at the bottom middle of the receiving groove, and the angle steel and the bottom of the receiving groove form a hook; the hook is hooked onto the cross brace. The angle steel increases the strength of the receiving groove and also serves to stably limit the cross brace at the bottom of the receiving groove.

[0012] Preferably, coal retaining plates are provided opposite to each other on the left and right supports. The coal retaining plates include a vertical plate fixed on the left or right support and a coal-aligning plate provided at the bottom of the vertical plate and extending inclinedly towards the bottom of the receiving chute. A coal-blocking skin is fixed at the bottom of the coal-aligning plate and cooperates with the main conveyor belt.

[0013] Preferably, the coal guide plate extends to the rear of the frame. This extension ensures stable and smooth passage of coal in the secondary conveyor. The guide plate works in conjunction with the coal guide plate to reduce coal breakage losses.

[0014] Preferably, the connecting rod and cross brace are detachably installed between the left and right supports, and the front ends of the receiving trough are detachably installed on the left or right support via custom pins and bushings. This structure facilitates maintenance, disassembly, and replacement of connecting rods, cross braces, pins, and bushings of different lengths, enabling adaptation to conveyor belts of different widths.

[0015] After adopting the above technical solution, the beneficial effects of this utility model are:

[0016] This utility model relates to an accompanying coal receiving and guiding device that solves the technical problem of high impact force on the main conveyor belt during the secondary conveyor unloading process in the prior art, which causes equipment damage. This utility model is installed before the coal enters the main conveyor belt to effectively receive and guide the coal, thereby significantly reducing the impact force of the coal falling on the main conveyor belt, reducing equipment wear, and ensuring that the coal can enter the main conveyor system smoothly and orderly. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the installation position of an accompanying material receiving and coal conveying device according to this utility model;

[0018] Figure 2 yes Figure 1 Side view;

[0019] Figure 3 This is a schematic diagram of the structure of an accompanying coal receiving device according to this utility model;

[0020] Figure 4 This is a structural diagram of the coal-blocking trolley;

[0021] Figure 5 This is a schematic diagram of the material receiving structure;

[0022] Figure 6 yes Figure 5 Side view.

[0023] In the diagram, 1. Coal retaining trolley, 11. Frame, 12. Traveling wheel, 13. Connecting rod, 14. Horizontal support rod, 15. Coal retaining plate, 151. Vertical plate, 152. Coal guiding plate, 153. Coal retaining skin, 2. Material receiving chute, 21. Guide plate, 22. Coal guiding plate, 23. Angle steel, 3. Secondary conveying system of the tunneling machine, 31. Material drop port, 32. Traveling part, 4. Main conveyor belt. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings.

[0025] The orientations mentioned in this specification are based on the orientation of the accompanying material receiving and coal conveying device of this utility model during normal operation, and do not limit its orientation during storage and transportation. They only represent relative positional relationships and do not represent absolute positional relationships.

[0026] Example 1:

[0027] like Figure 1 and Figure 2 As shown, a coal receiving and conveying device includes a coal-blocking trolley 1 and a receiving trough 2 installed on the coal-blocking trolley 1. The coal-blocking trolley 1 includes a frame 11 and traveling wheels 12 installed on the left and right sides of the frame 11. The traveling wheels 12 have a double-flanged structure, which can form a lateral limit. When encountering the impact of falling coal, uneven roadway ground, or vibration of the tunneling machine, the traveling wheels 12 are effectively prevented from accidentally detaching from the ground rail. At the same time, the double-flanged design increases the contact area between the wheel and the rail, reducing the risk of equipment center of gravity shift, especially when the tunneling machine generates severe vibration during cutting operations, thus improving overall stability. The front end of the frame 11 is fixedly connected to the traveling part 32 of the tunneling machine's secondary conveying system 3; the traveling wheels 12 run along the ground rail.

[0028] The receiving chute 2 is installed on the frame 11 with its front end tilted downwards. Its front end is located at the bottom of the drop port 31 of the tunneling machine's secondary conveying system 3, and its rear end is located above the bearing point of the main conveyor belt 4. Coal falls from the drop port 31 onto the receiving chute 2 and then slides downwards to the bearing point of the main conveyor belt 4.

[0029] The coal-blocking trolley 1 is connected to the traveling section 32 of the secondary conveying system 3 of the tunneling machine, enabling synchronous movement between the coal-blocking trolley 1 and the tunneling machine. The receiving chute 2 is inclinedly connected to the material drop port 31 of the secondary conveying system 3 and the bearing point of the main conveyor belt 4, forming a three-stage coal flow control system of "receiving-slowing-guiding." This avoids the impact of directly falling coal blocks on the bearing point of the main conveyor belt 4, reducing the impact force of falling coal on the main conveyor belt, minimizing equipment wear, and ensuring that coal enters the main conveyor belt 4 smoothly and orderly. Simultaneously, it avoids coal shattering and spillage caused by impact, preventing waste of coal resources and reducing on-site safety hazards and the burden of cleanup work.

[0030] As an improvement to receiving trough 2, such as Figure 2 , Figure 5 and Figure 6As shown, the receiving trough 2 includes a guide plate 21 at the bottom and coal guide plates 22 on the left and right sides of the guide plate 21. The guide plate 21 has a structure that is wider at the front and narrower at the back, with its minimum width located above the bearing point of the main conveyor belt 4. This structure facilitates coal collection. The guide plate 21 has an arc-shaped structure that curves towards the main conveyor belt 4. The arc-shaped structure increases the working strength and enhances the load-bearing capacity. At the same time, the arc-shaped surface design makes the material drop more concentrated, effectively preventing the material from splashing everywhere after dropping, thus avoiding material loss and waste.

[0031] As a preferred solution, the receiving chute 2 and the main conveyor belt 4 always maintain an angle of 30°. At this angle, when coal is dropped into the secondary conveyor system 3 of the tunneling machine, it is buffered by the receiving chute 2 and then smoothly slides onto the main conveyor belt 4, completely solving the problems of material spillage, coal sludge, and splashing at the secondary conveyor head.

[0032] As a preferred embodiment of the frame 11, the frame 11 includes a left support and a right support arranged opposite to each other; the left support and the right support are fixedly connected by a connecting rod 13 and a cross brace 14. The connecting rod 13 is located at the top of the rear end of the left support and the right support, away from the material drop port 31, thereby avoiding collision with the falling coal. The cross brace 14 is located in the middle of the left support and the right support, and at the bottom of the receiving trough 2, for supporting the receiving trough 2.

[0033] The front sides of the receiving trough 2 are respectively installed on the left or right bracket; an angle steel 23 extending in the left and right direction is provided at the bottom center of the receiving trough 2, and the angle steel 23 and the bottom of the receiving trough 2 form a hook; the hook is hooked on the cross brace 14. The angle steel 23 increases the strength of the receiving trough 2 and is used to stably limit the cross brace 14 at the bottom of the receiving trough 2.

[0034] Example 2:

[0035] To make this device suitable for more complex working conditions, this embodiment is a further improvement on the first embodiment.

[0036] like Figure 2 , Figure 3 and Figure 4 As shown, the coal-blocking trolley 1 and the traveling unit 32 are connected by a long positioning clamp; the long positioning clamp has elongated holes along the running direction of the main conveyor belt 4; either the coal-blocking trolley 1 or the traveling unit 32 is slidably installed in the elongated holes. This design allows for adaptation to more complex working conditions, adjustment of the appropriate installation working area, and ensures that the rotation adjustment of the tunneling machine's secondary conveying system 3 is not affected during the tunneling machine's movement.

[0037] Example 3:

[0038] To improve the coal blocking effect, this embodiment is a further improvement on the first embodiment.

[0039] Coal retaining plates 15 are arranged opposite to each other on the left and right supports. The coal retaining plates 15 include a vertical plate 151 fixed on the left or right support and a coal guide plate 152 set at the bottom of the vertical plate 151 and extending inclinedly toward the bottom of the receiving trough 2. A coal retaining skin 153 is fixed at the bottom of the coal guide plate 152 and cooperates with the main conveyor belt 4.

[0040] The vertical plate 151 can further block splashing coal blocks, preventing them from splashing outside the device. In addition, the coal guide plate 152 can gather the falling coal blocks, allowing them to fall more accurately into the middle of the main conveyor belt 4. The coal retainer 153 can form contact with the main conveyor belt 4, preventing coal blocks from flowing out of the gap between them. Furthermore, the coal retainer 153 will not cause wear to the main conveyor belt 4.

[0041] Furthermore, the coal guide plate 152 extends rearward towards the frame 11. The extended coal guide plate 152 ensures stable and smooth passage of the secondary coal conveyor. The guide plate 22 works in conjunction with the coal guide plate 152 to reduce coal breakage losses (actual measurement shows a reduction in spillage ≥65%).

[0042] Example 4:

[0043] In this embodiment, to increase the versatility of the device and enable its interchangeability between the main conveyor belts 4 of B850 and B1000, the connecting rod 13 and the cross brace 14 are detachably installed between the left and right supports. Two connecting rods 13 and two cross braces 14 are customized according to different requirements. By replacing the connecting rods 13 and cross braces 14 of different lengths, the distance between the left and right supports can be adjusted. To ensure that the receiving trough 2 is always located in the middle position between the left and right supports, the front ends of the receiving trough 2 are detachably installed on the left or right support via customized pins and bushings on both sides.

[0044] The specific installation method is as follows: Mounting holes are provided on both sides of the front end of the receiving trough 2, i.e., on the coal guide plate 22. Fixing holes are also provided at corresponding positions on the left and right supports. A bushing is clamped between the mounting holes and the fixing holes, and then a custom-made pin is passed through the mounting hole, bushing, and fixing hole in sequence to achieve a fixed connection. The installation of the receiving trough 2 is achieved by adjusting the length of the custom-made pin and bushing. This structure not only facilitates maintenance and replacement but also increases the versatility of the device.

[0045] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A companion coal receiving and following device, characterized by: The coal blocking trolley and the material receiving groove installed on the coal blocking trolley are included. The coal blocking trolley includes a frame body and walking wheels installed on the left and right sides of the frame body. The walking wheels are fixedly connected to the walking part of the tunneling machine two-transportation system. The material receiving groove is installed on the frame body in a front-to-back downward inclined manner. The front end of the material receiving groove is located at the bottom of the material dropping port of the tunneling machine two-transportation system, and the rear end is located above the load bearing point of the main transportation belt.

2. A companion coal-receiving device according to claim 1, characterized in that: The coal falls from the material dropping port to the material receiving groove and then slides downward to the load bearing point of the main transportation belt.

3. A companion coal receiving device according to claim 1, characterized in that: The material receiving groove includes a flow guide plate at the bottom and coal guide plates on the left and right sides of the flow guide plate.

4. The companion coal-receiving device of claim 1, wherein: The flow guide plate has a front wide and rear narrow structure, and the minimum width position is located above the load bearing point of the main transportation belt.

5. A companion coal-receiving device according to claim 4, characterized in that: The long positioning clamping plate is provided with a long slot along the running direction of the belt.

6. An attendant coal delivery device according to claim 1, wherein: The coal blocking trolley or the walking part is at least one of the sliding installation in the long slot. The walking wheel has a double-rim structure.

7. A companion coal-receiving device according to claim 6, characterized in that: The flow guide plate has an arc structure curved toward the main transportation belt.

8. A companion coal-receiving device according to claim 7, characterized in that: The material receiving groove and the main transportation belt always maintain a 30° included angle.

9. An attendant coal delivery device as claimed in claim 6, wherein: The frame body includes left and right supports. The left and right supports are fixedly connected by a connecting rod and a cross support rod. The connecting rod is located at the top of the rear end of the left and right supports and away from the material dropping port. The cross support rod is located at the middle of the left and right supports and at the bottom of the material receiving groove. The front end of the material receiving groove is respectively installed on the left support or the right support. The middle bottom of the material receiving groove is abutted on the cross support rod. The left and right supports are provided with a coal blocking plate. The coal blocking plate includes a vertical plate fixed on the left support or the right support and a coal following plate installed at the bottom of the vertical plate and extending to the bottom of the material receiving groove. The bottom of the coal following plate is fixed with a coal blocking belt. The coal following plate extends to the rear of the frame body. The connecting rod and the cross support rod are detachably installed between the left and right supports. The front end of the material receiving groove is respectively detachably installed on the left support or the right support through a customized pin shaft and a shaft sleeve.

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