Coal piling prevention scraper conveyor for coal mine

Abstract

The utility model relates to the technical field of coal mining equipment, in particular to a coal piling prevention scraper conveyor for a coal mine, which comprises a support block, a transmission mechanism and a material guide mechanism, the transmission mechanism is arranged on the supporting block, and the material guide mechanism is arranged above the end part of the transmission mechanism; the transmission mechanism comprises a fixing frame, a motor, a chain wheel, a placing plate and a scraper chain; the placing plate is detachably connected to the fixing frame in a drawer mode, the motor is arranged on the side face of the end of the fixing frame, and the two chain wheels are rotationally connected to the fixing frame. The material guiding mechanism comprises a discharging frame, the lower portion of a connecting frame on the right side of the discharging frame is rotationally connected with a cross-shaped rotating block, the cross-shaped rotating block and a cross-shaped switch are connected in a winding mode through a belt wheel and a flat belt, blades of the cross-shaped switch are matched with the discharging frame, and the discharging amount of coal is controlled through rotation of the cross-shaped switch. The discharging speed of the coal can be automatically adjusted according to the conveying speed of the scraper chain, the coal on the placing plate is prevented from being accumulated, and the scraper chain is prevented from being damaged.

Description

Technical Field

[0001] This utility model relates to the field of coal mining equipment technology, and in particular to a scraper conveyor for preventing coal pile-up in coal mines. Background Technology

[0002] Scraper conveyors are one of the main equipment for transporting coal underground in coal mines. They are particularly suitable for fully mechanized mining faces and roadway transportation. They can transport coal, gangue, or other materials in the mining face or roadway in a horizontal or inclined direction. They have a simple structure, a low profile, and are easy to install and maintain. They can also serve as the track for the coal mining machine and the fulcrum for the forward movement of hydraulic supports.

[0003] Existing scraper conveyors for coal mines involve placing the coal to be transported in the conveyor trough, then starting the scraper chain to transport the coal to the chute for unloading. However, during transport, the conveyor's conveying speed is prone to mismatch with the coal feeding speed, resulting in coal accumulation on the scraper conveyor. This can easily lead to the scraper conveyor operating under overload conditions, causing equipment damage.

[0004] Therefore, it is necessary to develop a coal mine anti-coal-piling scraper conveyor that can automatically adjust the coal feeding rate according to the scraper chain's conveying speed, prevent coal accumulation on the placement plate, and avoid damage to the scraper chain. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a scraper conveyor for coal mines that prevents coal from piling up. This scraper conveyor can automatically adjust the coal feeding rate according to the conveying speed of the scraper chain, preventing coal from piling up on the placement plate and avoiding damage to the scraper chain.

[0006] The specific technical solution is as follows:

[0007] A scraper conveyor for preventing coal pile-up in coal mines includes a support block, a transmission mechanism, and a material guiding mechanism; the transmission mechanism is mounted on the support block, and the material guiding mechanism is installed above the end of the transmission mechanism.

[0008] The transmission mechanism includes a fixed frame, a motor, sprockets, a placement plate, and a scraper chain. The lower sides of both ends of the fixed frame are connected to multiple support blocks at the bottom. The placement plate is detachably connected to the fixed frame in a drawer-like manner to receive falling coal. The motor is located on the side of the end of the fixed frame, and both sprockets are rotatably connected to the fixed frame. One of the sprockets is connected to the output shaft of the motor, and the scraper chain is wound between the two sprockets. Multiple scrapers are provided on the scraper chain, and the lower end of the scraper is spaced apart from the placement plate.

[0009] The material guiding mechanism includes a feeding frame, which is installed on the left side of the upper surface of the fixed frame via a connecting frame. A cross-shaped rotating block is rotatably connected to the lower part of the connecting frame on the right side of the feeding frame. The cross-shaped rotating block has a cross-shaped fan blade structure. When the scraper passes over the cross-shaped rotating block, it actuates the fan blades below the cross-shaped rotating block, causing the cross-shaped rotating block to rotate. A cross-shaped switch is located inside the feeding frame and is rotatably connected to the feeding frame. One end of the cross-shaped switch extends to the right connecting frame and is rotatably connected to the right connecting frame. The cross-shaped rotating block and the cross-shaped switch are connected by a pulley and a flat belt. The blades of the cross-shaped switch are adapted to the feeding frame. The amount of coal fed is controlled by rotating the cross-shaped switch.

[0010] It also includes a fixed scraper, which is installed in the middle of the upper end face of the fixed frame. The lower end of the fixed scraper is spaced from the scraper of the scraper chain, so that the coal can pass through the fixed scraper, and the coal that is too high is dispersed to other positions of the conveyor under the action of the fixed scraper.

[0011] The placement plate is equipped with a handle for pulling out the placement plate.

[0012] The feeding frame has a tapered structure that is wider at the top and narrower at the bottom.

[0013] The fixed scraper is provided with baffles on both the left and right sides.

[0014] The angle between the baffle and the fixed scraper is obtuse.

[0015] The beneficial effects of this utility model are:

[0016] This invention can automatically adjust the coal feeding rate according to the conveying speed of the scraper chain, prevent coal accumulation on the placement plate, and avoid damage to the scraper chain. When the coal is fed onto the placement plate, it is transported to the right by the scraper of the scraper chain. When the coal is transported to contact the fixed scraper, the fixed scraper will scrape the coal that is piled up too high, so that the coal is evenly distributed between the scrapers of the scraper chain. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of this utility model;

[0019] The components include: 1. Support block; 2. Fixing frame; 3. Placement plate; 4. Motor; 5. Sprocket; 6. Scraper chain; 7. Cross rotating block; 8. Flat belt; 9. Cross-shaped switch; 10. Discharge frame; 11. Fixed scraper. Detailed Implementation

[0020] To better explain and facilitate understanding of this utility model, the technical solution and effects of this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] like Figure 1 , Figure 2 As shown, this embodiment provides a scraper conveyor for preventing coal pile-up in coal mines, including a support block 1, a transmission mechanism, and a material guiding mechanism; the transmission mechanism is mounted on the support block 1, and the material guiding mechanism is mounted above the end of the transmission mechanism.

[0022] Specifically, the transmission mechanism includes a fixed frame 2, a motor 4, sprockets 5, a placement plate 3, and a scraper chain 6. The fixed frame 2 has multiple support blocks 1 connected to its lower front and rear ends. The placement plate 3 is detachably connected to the fixed frame 2 in a drawer-like manner to receive falling coal. A handle is provided on the placement plate 3 to facilitate its removal for cleaning. The motor 4 is located on the side of the end of the fixed frame 2. Two sprockets 5 are rotatably connected to the fixed frame 2. One sprocket 5 is connected to the output shaft of the motor 4. The scraper chain 6 is wound between the two sprockets 5 and has multiple scrapers. The lower end of each scraper is spaced apart from the placement plate 3, allowing the scrapers to carry away the coal without rubbing against it. In this embodiment, the support blocks 1 provide support and maintain the overall structural balance. In actual operation, after the motor 4 starts, the sprockets 5 rotate, causing the scraper chain 6 to drive the multiple scrapers to rotate, thereby conveying the coal along the placement plate 3.

[0023] In this embodiment, the material guiding mechanism includes a feeding frame 10, which is installed on the left side of the upper surface of the fixed frame 2 via a connecting frame. A cross rotating block 7 is rotatably connected to the lower part of the connecting frame on the right side of the feeding frame 10. The cross rotating block 7 has a cross-shaped fan blade structure. When the scraper moves, it passes the cross rotating block 7 and actuates the lower fan blade of the cross rotating block 7, causing the cross rotating block 7 to rotate. The feeding frame 10 has a tapered structure that is wider at the top and narrower at the bottom, which facilitates feeding and unloading. A cross-shaped switch 9 is located inside the feeding frame 10 and is rotatably connected to the feeding frame 10. One end of the cross-shaped switch 9 extends to the right connecting frame and is rotatably connected to the right connecting frame. The cross rotating block 7 and the cross-shaped switch 9 are connected by a pulley and a flat belt 8. When the cross rotating block 7 rotates, it synchronously drives the cross-shaped switch 9 to rotate, causing the coal to fall onto the placement plate 3. By adjusting the feeding rate, the accumulation of falling coal is prevented. The blades of the cross-shaped switch 9 are adapted to the feeding frame 10, and the amount of coal fed can be controlled by its rotation.

[0024] In addition, to make the conveyor transport materials more evenly, the conveyor also includes a fixed scraper 11. The fixed scraper 11 is installed in the middle of the upper end face of the fixed frame 2. Baffles are provided on the left and right sides of the fixed scraper 11 to prevent coal from being scraped to the outside of the conveyor. The baffles can be provided at a certain angle to better collect coal at the edge of the conveyor. The lower end of the fixed scraper 11 is spaced apart from the scraper of the scraper chain 6, so that the coal can pass through the fixed scraper 11 well, and the excessive coal can be dispersed between the scrapers of the scraper chain 6 under the action of the fixed scraper 11 to avoid coal accumulation.

[0025] In use, the fixing frame 2 is first placed in the coal transportation area and supported by the support block 1. The coal is then poured into the feeding frame 10. Simultaneously, the motor 4 is started, causing the sprocket 5 to rotate, which in turn drives the scraper chain 6 to rotate. When the scraper on the scraper chain 6 rotates to contact the cross rotating block 7, the scraper on the scraper chain 6 actuates the cross rotating block 7, causing it to rotate. Through the transmission of the flat belt 8 and the pulley, the cross-shaped switch 9 rotates, causing the coal to fall from the feeding frame 10 onto the placement plate 3. When the rotation speed of the scraper chain 6 slows down, the gap between the scraper chain 6 and the cross rotating block 7 actuates further. The length of the cross-shaped rotating block 7 slows down the rotation of the cross-shaped switch 9, thus slowing down the coal feeding rate. This allows the coal feeding rate to be automatically adjusted according to the conveying rate of the scraper chain 6, preventing coal accumulation on the placement plate 3 and avoiding damage to the scraper chain 6. When the coal is fed onto the placement plate 3, it is pushed to the right by the scraper of the scraper chain 6. When the coal is transported to contact the fixed scraper 11, the fixed scraper 11 scrapes the coal that has accumulated too high, so that the coal is evenly distributed between the scrapers of the scraper chain 6. Then the coal is transported to the right side of the placement plate 3 for unloading.

Claims

1. A scraper conveyor for preventing coal pile-up in coal mines, characterized in that: It includes a support block, a transmission mechanism, and a material guiding mechanism; the transmission mechanism is mounted on the support block, and the material guiding mechanism is mounted above the end of the transmission mechanism; The transmission mechanism includes a fixed frame, a motor, sprockets, a placement plate, and a scraper chain. The lower sides of both ends of the fixed frame are connected to multiple support blocks at the bottom. The placement plate is detachably connected to the fixed frame in a drawer-like manner to receive falling coal. The motor is located on the side of the end of the fixed frame, and both sprockets are rotatably connected to the fixed frame. One of the sprockets is connected to the output shaft of the motor, and the scraper chain is wound between the two sprockets. Multiple scrapers are provided on the scraper chain, and the lower end of the scraper is spaced apart from the placement plate. The material guiding mechanism includes a feeding frame, which is installed on the left side of the upper surface of the fixed frame via a connecting frame. A cross-shaped rotating block is rotatably connected to the lower part of the connecting frame on the right side of the feeding frame. The cross-shaped rotating block has a cross-shaped fan blade structure. When the scraper passes over the cross-shaped rotating block, it actuates the fan blades below the cross-shaped rotating block, causing the cross-shaped rotating block to rotate. A cross-shaped switch is located inside the feeding frame and is rotatably connected to the feeding frame. One end of the cross-shaped switch extends to the right connecting frame and is rotatably connected to the right connecting frame. The cross-shaped rotating block and the cross-shaped switch are connected by a pulley and a flat belt. The blades of the cross-shaped switch are adapted to the feeding frame. The amount of coal fed is controlled by rotating the cross-shaped switch.

2. The anti-coal-piling scraper conveyor for coal mines according to claim 1, characterized in that: It also includes a fixed scraper, which is installed in the middle of the upper end face of the fixed frame. The lower end of the fixed scraper is spaced from the scraper of the scraper chain, so that the coal can pass through the fixed scraper, and the excessive coal is dispersed between the scrapers of the scraper chain under the action of the fixed scraper.

3. The anti-coal-piling scraper conveyor for coal mines according to claim 1, characterized in that: The placement plate is equipped with a handle for pulling out the placement plate.

4. A scraper conveyor for preventing coal pile-up in coal mines according to claim 1, characterized in that: The feeding frame has a tapered structure that is wider at the top and narrower at the bottom.

5. A scraper conveyor for preventing coal pile-up in coal mines according to claim 2, characterized in that: The fixed scraper is provided with baffles on both the left and right sides.

6. A scraper conveyor for preventing coal pile-up in coal mines according to claim 5, characterized in that: The angle between the baffle and the fixed scraper is obtuse.

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