Highly abrasion resistant flighting for an en masse flighting conveyor and method of use

Abstract

This invention relates to a highly wear-resistant scraper conveyor center trough and its usage method, comprising a horizontal center plate, with multiple receiving grooves on the upper surface of the center plate, each containing a wear-resistant block. The upper surface of the wear-resistant block is higher than the upper surface of the center plate, and the edge of the upper surface of the wear-resistant block is chamfered, with the lower end of the chamfer lower than the upper surface of the center plate. The wear-resistant block is made of tin bronze. This invention provides wear-resistant blocks on the center plate, with the upper surface of the wear-resistant block higher than the upper surface of the center plate. The wear-resistant effect is achieved through contact between the wear-resistant block and the lower surface of the scraper. The wear-resistant block is made of tin bronze, which has low friction and good wear resistance. The lower end of the chamfer is lower than the upper surface of the center plate, facilitating the scraper to slide onto the upper surface of the wear-resistant block. This invention can effectively reduce the friction between the center plate and the scraper, reduce wear at the contact point between the center plate and the scraper, and improve service life.

Description

Technical Field

[0001] This invention relates to the field of scraper conveyor technology, specifically to a high wear-resistant scraper conveyor central trough and its usage method. Background Technology

[0002] Scraper conveyors are commonly used conveying equipment in coal mines. They not only transport coal and materials, but also serve as the running track for coal mining machines. Therefore, they have become an indispensable main piece of equipment in modern coal mining technology. Scraper conveyors use scraper chains to traction and transport coal within the trough.

[0003] The working principle of a scraper conveyor is as follows: the open conveying trough in the middle serves as the coal receiving component, and scrapers are fixed on the chain to form a scraper chain. When the head drive unit starts, it drives the sprocket on the head shaft to rotate, causing the scraper chain to circulate and move the coal along the conveying trough until it is unloaded at the head of the machine.

[0004] The conveying trough of a scraper conveyor is formed by connecting multiple central troughs. The central trough mainly includes side troughs on both sides and a central plate fixedly connected between them. The central plate primarily bears the material and is in direct contact with both the material and the scraper. Friction is most severe between the scraper and the central plate. Therefore, in existing technologies, the contact area between the central plate and the scraper is prone to wear, resulting in a short service life for the central plate. Summary of the Invention

[0005] This invention addresses the shortcomings of existing technologies by providing a highly wear-resistant scraper conveyor center trough and its usage method.

[0006] This invention is achieved through the following technical solution: a high wear-resistant scraper conveyor middle trough is provided, including a horizontal middle plate, the upper end surface of the middle plate is provided with a plurality of receiving grooves, the receiving grooves are filled with wear-resistant blocks, the upper end surface of the wear-resistant blocks is higher than the upper end surface of the middle plate, the edge of the upper end surface of the wear-resistant blocks is provided with a chamfer, the lower end of the chamfer is lower than the upper end surface of the middle plate, and the material of the wear-resistant blocks is tin bronze.

[0007] In this design, the scraper moves from back to front on the middle plate, and the coal block is located between adjacent scrapers. The movement of the scraper enables the coal block to move on the middle plate. The upper surface of the wear-resistant block is higher than the upper surface of the middle plate. The wear-resistant effect is achieved by the contact between the wear-resistant block and the lower surface of the scraper. The wear-resistant block is made of tin bronze, which has low friction and good wear resistance. The lower end of the chamfer is lower than the upper surface of the middle plate, which facilitates the scraper to slide to the upper surface of the wear-resistant block.

[0008] As an optimization, the upper surface of the middle plate is provided with multiple wear-resistant block groups arranged in a front-to-back pattern. Each wear-resistant block group includes two wear-resistant blocks arranged in an inverted V-shape. The inverted V-shaped arrangement of the two wear-resistant blocks in this design ensures that the scraper remains in contact with the wear-resistant blocks throughout its forward and backward movement. Furthermore, it allows the scraper to contact the wear-resistant blocks at all points along its width during forward and backward movement, reducing scraper wear. The inverted V-shaped arrangement also helps to gather coal towards the center.

[0009] As an optimization, the upper surface of the middle plate is provided with multiple alternating positive V-shaped groups and multiple inverted V-shaped groups. The positive V-shaped group includes two wear-resistant blocks arranged in a V-shape on the left and right, and the inverted V-shaped group includes two wear-resistant blocks arranged in an inverted V-shape on the left and right. In this design, the positive V-shaped groups and inverted V-shaped arrangement ensure that the scraper is always in contact with the wear-resistant blocks during its forward and backward movement, and also ensures that the scraper can contact the wear-resistant blocks at all points in the width direction during its forward and backward movement, reducing the wear of the scraper. The alternating arrangement of positive V-shaped groups and inverted V-shaped groups also has the effect of moving the coal inward and outward, causing more coal powder to fall off the coal block, and achieving a lubrication effect through the coal powder.

[0010] As an optimization, the positive V-shaped group and the inverted V-shaped group are continuously arranged along the length of the middle plate. This ensures that the scraper remains in contact with the wear-resistant block throughout its forward movement.

[0011] As an optimization, the upper surface of the wear-resistant block is provided with multiple grinding grooves arranged horizontally. Each grinding groove includes a diffusion section and a grinding section connected front to back. The horizontal width of the grinding section gradually decreases from back to front, while the horizontal width of the diffusion section gradually increases from back to front. The front-to-back length of the grinding section is greater than that of the diffusion section. In this design, coal powder enters the grinding groove and is moved forward by the action of scrapers. In the grinding section, the reduced width space causes it to be compressed into powder, which is then dispersed in the diffusion section and falls onto the middle plate, creating a lubricating effect between the scrapers and the middle plate.

[0012] As an optimization, the depth of the pulverizing section gradually decreases from back to front, while the depth of the diffusion section gradually increases from back to front. This improves both the pulverizing effect of the pulverizing section and the diffusion effect of the diffusion section.

[0013] As an optimization, an elastic pad is installed below the wear-resistant block. The elasticity of the pad allows the wear-resistant block to drop a certain height after the scraper presses against it, providing a buffering effect. Simultaneously, it increases the contact between the scraper and the coal powder, allowing the coal powder to provide lubrication and reducing wear on the wear-resistant block.

[0014] As an optimization, the two ends of the wear-resistant block are connected to the middle plate by connecting screws, and the upper surface of the wear-resistant block has a countersunk groove for the screw head. The wear-resistant block is fixed by the connecting screws, and the countersunk groove accommodates the screw head of the connecting screw.

[0015] A method for using the middle trough of a scraper conveyor includes the following steps:

[0016] a. The scraper moves from back to front on the middle plate, and the coal block is located between adjacent scrapers. The movement of the scraper enables the coal block to move on the middle plate. The upper surface of the wear-resistant block is higher than the upper surface of the middle plate. The wear-resistant effect is achieved by the contact between the wear-resistant block and the lower surface of the scraper.

[0017] b. Small coal lumps and coal powder pass through the crushing trough and are moved forward by the action of scrapers. In the crushing section, the reduced width space causes them to be squeezed into powder, and after being dispersed in the diffusion section, they fall onto the middle plate, forming a lubricating effect between the scraper and the middle plate.

[0018] The beneficial effects of this invention are as follows: This invention provides a high-wear-resistant scraper conveyor center trough and its usage method. Wear-resistant blocks are provided on the center plate, with the upper surface of the wear-resistant blocks higher than the upper surface of the center plate. Wear resistance is achieved through contact between the wear-resistant blocks and the lower surface of the scraper. The wear-resistant blocks are made of tin bronze, which has low friction and good wear resistance. The lower end of the chamfer is lower than the upper surface of the center plate, thus facilitating the scraper's sliding onto the upper surface of the wear-resistant blocks. This invention can effectively reduce the friction between the center plate and the scraper, reduce wear at the contact point between the center plate and the scraper, and improve service life. Attached Figure Description

[0019] Figure 1 This is a top view of the middle plate in Embodiment 1 of the present invention;

[0020] Figure 2 This is a top view of the middle plate in Embodiment 2 of the present invention;

[0021] Figure 3 This is a schematic diagram of the cross-section of the central groove in this invention;

[0022] Figure 4 This is a top view of the wear-resistant block of the present invention;

[0023] Figure 5 This is a top view of the pulverizing tank of the present invention;

[0024] Figure 6 For the present invention Figure 4 Sectional view of plane AA;

[0025] Figure 7 For the present invention Figure 4 BB section view;

[0026] Figure 8 For the present invention Figure 4 CC-plane sectional view;

[0027] As shown in the figure:

[0028] 1. Medium plate, 2. Wear-resistant block, 3. Crushing trough, 4. Connecting screw, 5. Elastic pad, 6. Screw head recess, 31. Crushing section, 32. Diffusion section. Detailed Implementation

[0029] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0030] Example 1:

[0031] like Figures 1-8 As shown, the middle trough of a high wear-resistant scraper conveyor of the present invention includes a horizontal middle plate 1, on which scrapers move from back to front, thereby driving coal blocks to be conveyed from the middle plate 1.

[0032] The upper surface of the middle plate 1 is provided with multiple receiving grooves, and wear-resistant blocks 2 are installed in the receiving grooves. The shape of the receiving grooves is the same as the shape of the wear-resistant blocks 2, thereby restricting the movement of the wear-resistant blocks 2 in all directions on the horizontal plane. The number and position of the wear-resistant blocks 2 are consistent with the number and position of the receiving grooves.

[0033] The wear-resistant block 2 is made of tin bronze.

[0034] In this embodiment, the upper surface of the middle plate 1 is provided with multiple wear-resistant block groups arranged in a front-to-back pattern. Each wear-resistant block group includes two wear-resistant blocks 2 arranged in an inverted V-shape. The inverted V-shape arrangement means that the opening of the V-shape faces backward. As the scraper moves forward, the front ends of the two wear-resistant blocks 2 in the wear-resistant block group maintain a certain distance. When the coal is conveyed forward, the two wear-resistant blocks 2 arranged in an inverted V-shape can guide the coal towards the center of the trough.

[0035] Multiple wear-resistant block groups are continuously arranged along the length of the middle plate 1. Specifically, the front end of the wear-resistant block 2 in the rear wear-resistant block group is located in front of the rear end of the wear-resistant block 2 in the front wear-resistant block group, so that the scraper is always in contact with the wear-resistant block.

[0036] The wear-resistant block 2 has a long strip structure with rounded ends. The upper surface of the wear-resistant block 2 is higher than the upper surface of the middle plate 1. The edge of the upper surface of the wear-resistant block 2 is chamfered, and the lower end of the chamfer is lower than the upper surface of the middle plate 1, so as to facilitate the scraper to travel to the upper surface of the wear-resistant block 2.

[0037] The two ends of the wear-resistant block 2 are connected to the middle plate 1 by connecting screws 4. The upper end face of the wear-resistant block 2 has a screw head countersunk groove 6, so that the screw head is lower than the upper end face of the wear-resistant block 2.

[0038] An elastic pad 5 is installed below the wear-resistant block 2. Through the elasticity of the pad, the wear-resistant block can be lowered to a certain height after the scraper presses against it, providing a buffering effect. Simultaneously, the lowering of the wear-resistant block increases the contact between the scraper and the coal powder, allowing the coal powder to provide lubrication and reducing wear on the wear-resistant block. Because of the elastic pad 5, the connecting screw 4 does not need to be tightened too forcefully; only enough to prevent the wear-resistant block 2 from coming off.

[0039] The upper surface of the wear-resistant block is provided with a plurality of crushing grooves arranged in a left-right manner. The crushing groove includes a diffusion section 32 and a crushing section 31 connected in a front-to-back manner. The left-to-right width of the crushing section 31 gradually decreases from back to front, the left-to-right width of the diffusion section 32 gradually increases from back to front, and the front-to-back length of the crushing section 31 is greater than the front-to-back length of the diffusion section 32.

[0040] The depth of the crushing section 31 gradually decreases from back to front, while the depth of the diffusion section 32 gradually increases from back to front.

[0041] The reduced width and depth of the crushing section 31 compresses the coal into powder, which then falls onto the middle plate after being dispersed in the diffusion section 32. The front-to-back length of the crushing section 31 is greater than that of the diffusion section 32, thus allowing the coal to be fully crushed and dispersed rapidly.

[0042] Example 2: Figure 2 As shown,

[0043] The difference between this embodiment and Embodiment 1 is that,

[0044] The upper surface of the middle plate 1 is provided with multiple positive V-shaped groups and multiple inverted V-shaped groups arranged alternately front and back. The positive V-shaped group includes two wear-resistant blocks 2 arranged in a V-shape on the left and right, and the inverted V-shaped group includes two wear-resistant blocks 2 arranged in an inverted V-shape on the left and right.

[0045] The two wear-resistant blocks 2 arranged in a V-shape in the positive V-shape group have their openings facing forward, while the two wear-resistant blocks 2 arranged in a V-shape in the inverted V-shape group have their openings facing backward. By alternating the arrangement of the positive V-shape group and the inverted V-shape group, the coal can be moved inside and out, causing more coal powder to fall off the coal block, and the coal powder can achieve a lubrication effect.

[0046] The positive V-shaped and inverted V-shaped groups are continuously arranged along the length of the middle plate 1, ensuring that the scraper is always in contact with the wear-resistant block.

[0047] A method for using the middle trough of a scraper conveyor includes the following steps:

[0048] a. The scraper moves from back to front on the middle plate 1, and the coal block is located between the adjacent scrapers. The movement of the scraper enables the coal block to move on the middle plate. The upper surface of the wear-resistant block 2 is higher than the upper surface of the middle plate 1. The wear-resistant effect is achieved by the contact between the wear-resistant block 2 and the lower surface of the scraper.

[0049] b. Small coal lumps and coal powder pass through the crushing trough and are driven forward by the scraper. In the crushing section 31, the reduced width space causes them to be squeezed into powder, and after being dispersed in the diffusion section 32, they fall onto the middle plate 1, forming a lubricating effect between the scraper and the middle plate.

[0050] Of course, the above description is not limited to the examples above. Technical features not described in this invention can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solutions of this invention and are not intended to limit this invention. This invention has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this invention do not depart from the spirit of this invention and should also fall within the scope of protection of the claims of this invention.

Claims

1. A high wear-resistant scraper conveyor center trough, comprising a horizontal center plate (1), characterized in that: The upper surface of the middle plate (1) is provided with multiple receiving grooves, and wear-resistant blocks (2) are installed in the receiving grooves. The upper surface of the wear-resistant block (2) is higher than the upper surface of the middle plate (1). The edge of the upper surface of the wear-resistant block (2) is provided with a chamfer. The lower end of the chamfer is lower than the upper surface of the middle plate (1). The material of the wear-resistant block (2) is tin bronze. The upper surface of the wear-resistant block is provided with a plurality of crushing grooves arranged in the left and right. The crushing groove includes a diffusion section (32) and a crushing section (31) connected in the front and back. The width of the crushing section (31) gradually decreases from back to front, the width of the diffusion section (32) gradually increases from back to front, and the front and back length of the crushing section (31) is greater than the front and back length of the diffusion section (32).

2. The middle trough of a high wear-resistant scraper conveyor according to claim 1, characterized in that: The upper surface of the middle plate (1) is provided with a plurality of wear-resistant block groups arranged in front and behind, the wear-resistant block group including two wear-resistant blocks (2) arranged in an inverted V shape on the left and right.

3. The high wear-resistant scraper conveyor middle trough according to claim 1, characterized in that: The upper surface of the middle plate (1) is provided with multiple positive V-shaped groups and multiple inverted V-shaped groups arranged alternately in front and back. The positive V-shaped group includes two wear-resistant blocks (2) arranged in a V-shape on the left and right, and the inverted V-shaped group includes two wear-resistant blocks (2) arranged in an inverted V-shape on the left and right.

4. The middle trough of a high wear-resistant scraper conveyor according to claim 3, characterized in that: The positive V-shaped group and the inverted V-shaped group are continuously arranged along the length of the middle plate (1).

5. The middle trough of a high wear-resistant scraper conveyor according to claim 1, characterized in that: The depth of the crushing section (31) gradually decreases from back to front, while the depth of the diffusion section (32) gradually increases from back to front.

6. The middle trough of a high wear-resistant scraper conveyor according to claim 1, characterized in that: An elastic pad (5) is installed below the wear-resistant block (2).

7. The middle trough of a high wear-resistant scraper conveyor according to claim 1, characterized in that: The two ends of the wear-resistant block (2) are connected to the middle plate (1) by connecting screws (4), and the upper end face of the wear-resistant block (2) has a screw head groove (6).

8. A method of using the middle trough of the scraper conveyor as described in claim 1, characterized in that, Includes the following steps: a. The scraper moves from back to front on the middle plate (1), and the coal block is located between the adjacent scrapers. The movement of the scraper enables the coal block to move on the middle plate. The upper surface of the wear-resistant block (2) is higher than the upper surface of the middle plate (1). The wear-resistant effect is achieved by the wear-resistant block (2) contacting the lower surface of the scraper. b. Small coal lumps and coal powder pass through the crushing trough and are driven forward by the scraper. In the crushing section (31), the width space is reduced, causing them to be squeezed into powder. After being dispersed in the diffusion section (32), they fall onto the middle plate (1), forming a lubricating effect between the scraper and the middle plate.

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