A sprocket for a round-link chain for a flight conveyor

Abstract

This invention discloses a circular link chain sprocket for a scraper conveyor, specifically relating to the field of scraper conveyor technology. It includes a sprocket body and several assembly blocks. The outer wall of the sprocket body has several mounting grooves evenly distributed circumferentially. Several assembly blocks are respectively installed within these mounting grooves. Each assembly block has two opposing sprocket teeth on its outer wall, and two movable grooves are formed on the upper surface of each opposing side of the two sprocket teeth. This circular link chain sprocket for a scraper conveyor, by incorporating a support rod, a buffer plate, and a spring at the bottom of the chain groove, allows the chain groove to be pressurized when it enters the groove. This pressure causes the support rod and buffer plate to compress the spring, resulting in an active retraction action. This significantly reduces the impact load at the chain groove, decreases wear, and extends its service life. When the chain groove reaches its service life limit, only the worn chain gear needs to be replaced. Disassembly and replacement are simple, maintenance is convenient, and maintenance costs are reduced.

Description

Technical Field

[0001] This invention relates to the field of scraper conveyor technology, and in particular to a circular link chain sprocket for scraper conveyors. Background Technology

[0002] Scraper conveyors are an important component of fully mechanized mining face equipment, primarily used for loading and transporting materials. When the motor at the head of the scraper conveyor starts, the transmission system rotates the sprocket, driving the circular link chain and the scrapers mounted on it to circulate along the chute. Material is conveyed from the head to the tail under the action of the scrapers and the chute. The sprocket in the scraper conveyor utilizes its chain groove structure to engage and transmit power with the circular link chain. In the scraper conveyor, the sprocket pulls the scraper chain around and returns through the lower trough of the guide chute. The function and reliability of the scraper conveyor depend on the performance of the sprocket, and the wear resistance of the chain groove at the meshing point of the sprocket teeth and chain plays a crucial role in the service life of the sprocket. Normally, during normal operation, the meshing surfaces of the circular link chain and sprocket inevitably experience wear, significantly impacting the equipment's lifespan. These are the main vulnerable parts of this type of equipment, accounting for a large proportion of maintenance and having high single-time maintenance costs, thus causing problems in production and other aspects. The chain collet is subjected to heavy friction and impact loads, causing severe wear. Furthermore, materials such as fine sandstone inevitably enter the chain collet friction pair through the circular link chain, further exacerbating wear.

[0003] The main form of damage to existing sprockets is wear failure of the chain slot. During normal operation of the scraper conveyor, the circular chain entering the chain slot generates a huge impact load, which accelerates the wear at the chain slot. After the chain slot fails, the machine needs to be stopped to replace the sprocket. Replacing a sprocket requires disassembling the scraper conveyor drive unit, which is very troublesome, and frequent replacements will affect normal production and reduce work efficiency. Summary of the Invention

[0004] The main objective of this invention is to provide a circular link chain sprocket for scraper conveyors, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A circular link chain sprocket for a scraper conveyor includes a sprocket body and several assembly blocks. The outer wall of the sprocket body has several mounting grooves evenly distributed circumferentially. The assembly blocks are respectively installed within these mounting grooves. Each assembly block has two opposing sprocket teeth on its outer wall. Two movable grooves are formed on the upper surface of each opposing side of the two sprocket teeth, located on opposite sides of the upper end of the sprocket teeth. A chain socket is installed within the sprocket teeth. An installation block is fixedly installed in the center of each mounting groove. A first sliding groove and a second sliding groove are formed on the two vertical sidewalls of each movable groove. A buffer cavity is formed inside the bottom wall of the movable groove. A through hole is formed at the top of the buffer cavity. A buffer plate is slidably connected to the inner wall of the buffer cavity. A spring is fixedly installed at the bottom of the buffer plate. A support rod is fixedly installed at the upper end of the buffer plate, with its upper end penetrating the through hole and fixedly connected to the bottom of the chain socket.

[0007] Preferably, a first slider and a second slider are fixedly installed on the two vertical sidewalls of the chain socket, and the first slider and the second slider slide in the first groove and the second groove, respectively.

[0008] Preferably, an assembly groove is fixedly installed in the middle of the bottom wall of the assembly block, and the mounting block is adapted to the assembly groove.

[0009] Preferably, the mounting block has second screw holes at both its front and rear ends.

[0010] Preferably, the assembly block has grooves on both the front and rear walls, and the sidewalls of the grooves have first screw holes that communicate with the assembly grooves.

[0011] Preferably, the first screw hole and the second screw hole are matched and are connected by a common threaded bolt.

[0012] Preferably, the bottom and side walls of the chain socket are provided with rubber pads.

[0013] Preferably, the horizontal cross-section of the first and second slides is a convex shape, and the first and second sliders are convex blocks.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] This invention discloses a circular link chain sprocket for a scraper conveyor. By setting a support rod, a buffer plate, and a spring at the bottom of the chain slot, when the circular link chain enters the slot, the slot is subjected to pressure, which drives the support rod and buffer plate to compress the spring, resulting in an active retraction action. This greatly reduces the impact load at the slot, reduces wear, and extends the service life of the slot. When the service life of the slot reaches its limit, the sprocket teeth can be quickly replaced through the designed assembly block, mounting groove, mounting block, first screw hole, and second screw hole, thus avoiding the need to disassemble the scraper conveyor transmission device to replace the sprocket. This facilitates maintenance, reduces downtime, and saves maintenance costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the sprocket body of the present invention;

[0018] Figure 3 This is a schematic diagram showing the connection between the assembly block and the sprocket teeth of the present invention;

[0019] Figure 4 This is a schematic diagram of the sprocket teeth of the present invention;

[0020] Figure 5 This is a schematic diagram showing the connection between the chain socket, the first slider, and the second slider of the present invention;

[0021] Figure 6 This is a cross-sectional schematic diagram of part of the structure of the present invention.

[0022] In the diagram: 1. Sprocket body; 2. Assembly block; 3. Mounting block; 4. Sprocket tooth; 5. Chain socket; 6. Movable groove; 7. Support rod; 8. Buffer plate; 9. Spring; 10. First slider; 11. Second slider; 12. Assembly bolt; 21. Assembly groove; 22. Groove; 23. First screw hole; 31. Second screw hole; 61. First sliding groove; 62. Second sliding groove; 63. Through hole; 601. Buffer cavity; 101. Mounting groove. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0024] In the description of this invention, it should be noted that the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0025] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0026] like Figure 1-6 As shown, a circular ring chain sprocket for a scraper conveyor includes a sprocket body 1 and several assembly blocks 2. The outer wall of the sprocket body 1 has several mounting grooves 101 evenly distributed circumferentially. The assembly blocks 2 are respectively installed within the mounting grooves 101. Each assembly block 2 has two opposing sprocket teeth 4 on its outer wall. Two movable grooves 6 are formed on the upper surface of each opposing side of the two sprocket teeth 4, located on opposite sides of the upper end of the sprocket teeth 4. Chain recesses 5 are installed within the sprocket teeth 4, and the surface of the chain recesses 5 is provided with a welded layer. The surface of the welded layer is provided with a hardened... An aluminum alloy wear-resistant layer improves the wear resistance of the sprocket teeth. An installation block 3 is fixedly installed in the middle of the mounting groove 101. The two vertical sidewalls of the movable groove 6 are respectively provided with a first sliding groove 61 and a second sliding groove 62. A buffer cavity 601 is provided inside the bottom wall of the movable groove 6. A through hole 63 is provided at the top of the buffer cavity 601. A buffer plate 8 is slidably connected to the inner wall of the buffer cavity 601. A spring 9 is fixedly installed at the bottom of the buffer plate 8. A support rod 7 is fixedly installed at the upper end of the buffer plate 8. The upper end of the support rod 7 passes through the through hole 63 and is fixedly connected to the bottom of the chain socket 5.

[0027] In actual operation, the chain socket 5 is subjected to heavy wear and impact loads. The support rod 7, spring 9, and buffer plate 8 set at the bottom of the chain socket 5 can buffer the chain socket 5. When the circular chain enters the chain socket 5, the chain socket 5 is subjected to pressure, which drives the support rod 7 and buffer plate 8 to squeeze the spring 9 and perform an active yielding action, which greatly reduces the impact load at the chain socket 5, reduces the wear of the chain socket 5, and extends the service life of the chain socket 5.

[0028] like Figure 4 , Figure 5 and Figure 6As shown, in this embodiment, the two vertical sidewalls of the chain socket 5 are respectively fixedly installed with a first slider 10 and a second slider 11. The horizontal cross-section of the first slide groove 61 and the second slide groove 62 is a convex-shaped structure, and the first slider 10 and the second slider 11 are convex block structures. The first slider 10 and the second slider 11 slide in the first slide groove 61 and the second slide groove 62 respectively. The first slider 10 and the second slider 11 cooperate with the first slide groove 61 and the second slide groove 62 to restrict the movement of the chain socket 5, so that the chain socket 5 can only perform vertical displacement movement in the movable groove 6.

[0029] like Figure 2 and Figure 3 As shown, in this embodiment, an assembly groove 21 is fixedly installed in the middle of the bottom wall of the assembly block 2. The mounting block 3 is adapted to the assembly groove 21. The mounting block 3 has second screw holes 31 at both the front and rear ends. The assembly block 2 has grooves 22 on both the front and rear walls. The side wall of the groove 22 has a first screw hole 23 that communicates with the assembly groove 21. The first screw hole 23 and the second screw hole 31 are matched and are connected by a common threaded assembly bolt 12.

[0030] When the service life of the sprocket tooth 4's chain groove 5 reaches its limit, the sprocket tooth 4 needs to be replaced entirely. First, the sprocket tooth 4 must be disassembled. Use a wrench to remove the mounting bolts 12 on both sides of the assembly block 2, and remove the assembly block 2 and the damaged sprocket tooth 4 above it to facilitate the installation of the new sprocket tooth 4. During installation, align the assembly block 2 with the mounting groove 101 and the mounting block 3 with the mounting groove 21. Then, use a wrench to install the mounting bolts 12 into the first screw hole 23 and the second screw hole 31, thus completing the replacement of the sprocket tooth 4. After all the sprocket teeth 4 are installed, normal operation can be restored.

[0031] In this embodiment, rubber pads are provided on the bottom and side walls of the chain groove 5 to reduce the impact of the chain groove 5 on the movable groove 6 and improve the service life of the entire sprocket.

[0032] The working principle of this invention is as follows: During actual operation, the chain groove 5 is subjected to heavy wear and impact loads. The support rod 7, spring 9, and buffer plate 8 installed at the bottom of the chain groove 5 can buffer the chain groove 5. When the circular chain enters the chain groove 5, the chain groove 5 is subjected to pressure, which drives the support rod 7 and buffer plate 8 to squeeze the spring 9, performing an active yielding action, which greatly reduces the impact load at the chain groove 5, reduces the wear of the chain groove 5, and extends the service life of the chain groove 5. When the service life of the chain groove 5 reaches its limit, the sprocket teeth 4 need to be replaced as a whole. The sprocket teeth 4 must first be disassembled. Use a wrench to remove the mounting bolts 12 on both sides of the assembly block 2, and remove the assembly block 2 and the failed sprocket teeth 4 above it as a whole to facilitate the installation of new sprocket teeth 4. During installation, align assembly block 2 with mounting slot 101 and mounting block 3 with mounting slot 21. Then, use a wrench to install assembly bolt 12 into the first screw hole 23 and the second screw hole 31 to complete the replacement of sprocket 4. After all sprocket teeth 4 are installed, normal operation can be restored.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A circular link chain sprocket for a scraper conveyor, characterized in that: The assembly includes a sprocket body (1) and several assembly blocks (2). The outer wall of the sprocket body (1) is evenly provided with several mounting grooves (101) along its circumference. Several assembly blocks (2) are respectively installed in the mounting grooves (101). The outer wall of each assembly block (2) is provided with two opposing sprocket teeth (4). Two movable grooves (6) are opened on the upper surface of each opposing side of the two sprocket teeth (4). The two movable grooves (6) are located on both sides of the upper end of the sprocket teeth (4). A chain socket (5) is installed inside the sprocket teeth (4). An installation block (3) is fixedly installed in the middle of each mounting groove (101). The two vertical sidewalls of the movable groove (6) are respectively provided with a first sliding groove (61) and a second sliding groove (62). A buffer cavity (601) is opened inside the bottom wall of the movable groove (6). The buffer cavity (601) has a through hole (63) at the top. The buffer cavity (601) is slidably connected to the inner wall of the buffer cavity (601). A spring (9) is fixedly installed at the bottom of the buffer plate (8). A support rod (7) is fixedly installed at the upper end of the buffer plate (8). The upper end of the support rod (7) passes through the through hole (63) and is fixedly connected to the bottom of the chain socket (5). The two vertical sidewalls of the chain socket (5) are respectively fixedly installed with a first slider (10) and a second slider (11). The first slider (10) and the second slider (11) slide in the first slide groove (61) and the second slide groove (62) respectively. An assembly groove (21) is fixedly installed in the middle of the bottom wall of the assembly block (2). The mounting block (3) is adapted to the assembly groove (21). Rubber pads are provided on the bottom wall and sidewalls of the chain socket (5).

2. The circular link chain sprocket for a scraper conveyor according to claim 1, characterized in that: The mounting block (3) has second screw holes (31) at both the front and rear ends.

3. The circular link chain sprocket for a scraper conveyor according to claim 2, characterized in that: The assembly block (2) has grooves (22) on both the front and rear walls, and the side wall of the groove (22) has a first screw hole (23) that communicates with the assembly groove (21).

4. A circular link chain sprocket for a scraper conveyor according to claim 3, characterized in that: The first screw hole (23) and the second screw hole (31) are matched and are connected by a common threaded bolt (12).

5. A circular link chain sprocket for a scraper conveyor according to claim 1, characterized in that: The first slide (61) and the second slide (62) have a convex cross-section, and the first slider (10) and the second slider (11) have a convex block structure.

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