An automatic guard for an apron conveyor

Abstract

The application relates to an automatic protection device of a scraper conveyor, and belongs to the technical field of the scraper conveyor. The automatic protection device comprises a machine body, a supporting rod arranged on the machine body, a connecting chain, a positioning plate and a laser positioning assembly. The supporting rod horizontally penetrates vertical side walls on both sides of the machine body, and is perpendicular to a material conveying direction. The supporting rod is rotationally connected with the machine body, and a rotation shaft is a center line of the supporting rod. The positioning plate abuts against an outer wall at the bottom of the machine body. One end of the connecting chain is fixedly connected with one end of the supporting rod, and the other end is fixedly connected with one end of the positioning plate. Two connecting chains are correspondingly arranged. The laser positioning assembly is fixedly connected with an outer wall of the machine body, and is used for monitoring whether the bottom of the machine body is recessed. The application can ensure that the material is in effective contact with the scraper, and has the effect of protecting the scraper conveyor itself.

Description

Technical Field

[0001] This application relates to the technical field of scraper conveyors, and in particular to an automatic protection device for scraper conveyors. Background Technology

[0002] Currently, a scraper conveyor is a type of conveyor that uses scraper chains to transport bulk materials within a trough. In modern coal mining faces, scraper conveyors not only transport coal and materials but also serve as the running track for the coal mining machine, making them an indispensable piece of equipment in modern coal mining technology.

[0003] Material is fed from the feeding point onto the scraper conveyor. The feeding point does not change, and the position on the scraper conveyor is unique. Scraper conveyors often cooperate with each other, or material elevators cooperate with scraper conveyors to complete the material transportation of the entire production line.

[0004] In actual production, the inventors discovered that when feeding materials for a long time or when the amount of material fed exceeds the rated conveying capacity of the scraper conveyor, the area of ​​the scraper conveyor that receives the material immediately will develop a downward depression, resulting in a defect where the material is stuck in the deformed area. Summary of the Invention

[0005] In order to ensure effective contact between the material and the scraper and to protect the scraper conveyor itself, this application provides an automatic protection device for the scraper conveyor.

[0006] The automatic protection device for scraper conveyors provided in this application adopts the following technical solution:

[0007] An automatic protection device for a scraper conveyor includes a machine body, and also includes a support rod, a connecting chain, a positioning plate, and a laser positioning component installed on the machine body. The support rod horizontally penetrates the vertical sidewalls on both sides of the machine body and is perpendicular to the material conveying direction. The support rod is rotatably connected to the machine body, with the rotation axis being the center line of the support rod. The positioning plate abuts against the outer wall of the bottom of the machine body. One end of the connecting chain is fixedly connected to one end of the support rod, and the other end is fixedly connected to one end of the positioning plate. Two connecting chains are provided accordingly. The laser positioning component is fixedly connected to the outer wall of the machine body and is used to monitor whether the bottom of the machine body is dented.

[0008] By adopting the above technical solution, when the bottom of the scraper conveyor is concave, the laser positioning component detects the concavity at the bottom of the machine body. At this time, the support rod is rotated, and the support rod drives the connecting chain. The connecting chain is wrapped around the support rod, and the positioning plate moves upward. The positioning plate supports the concavity at the bottom of the machine body, thereby ensuring effective contact between the material and the scraper, avoiding material accumulation, and preventing the material from squeezing the scraper and causing obstruction to the scraper's operation. This provides protection for the scraper conveyor itself.

[0009] Optionally, it also includes a diversion assembly mounted on the machine body, which includes a cylinder, a push plate, and a storage bin. A feed pipe is provided on the top of the machine body, the storage bin is fixed to the machine body and its interior is fixedly connected to the outer wall of the feed pipe, the cylinder is fixed to the outer wall of the feed pipe away from the storage bin, the push plate is obliquely inserted into the feed pipe with the oblique direction inclined downwards towards the storage bin, one end of the cylinder piston rod is fixedly connected to the push plate, and a distributing port is provided on the feed pipe for communication between the interior of the feed pipe and the interior of the storage bin, the end of the push plate is inserted into the distributing port; a lifting assembly is provided on the storage bin for controlling whether the interior of the storage bin is connected to the interior of the scraper conveyor.

[0010] By adopting the above technical solution, when the amount of material fed exceeds the rated conveying capacity of the scraper conveyor, the bottom of the scraper conveyor will sink, the cylinder will be activated, and the cylinder will drive the push plate to move, so that the push plate is inserted into the distribution port. At this time, the push plate will block the feed pipe, and the material will enter the storage bin from the distribution port, so that the material will not fall on the scraper conveyor temporarily, thereby reducing the burden on the scraper conveyor and alleviating the degree of sinking at the bottom of the scraper conveyor.

[0011] Optionally, the bottom of the storage hopper is initially inclined and then horizontal, with the inclination direction being downward, away from the feed pipe.

[0012] By adopting the above technical solution, after the material enters the storage bin, it will first slide down the inclined bottom of the storage bin, which facilitates the subsequent entry of materials.

[0013] Optionally, the laser positioning component includes a laser level and an alarm. Along the conveying direction of the scraper conveyor, the laser level is fixed on the vertical side wall at one end of the machine body, and the alarm is suspended and fixed on the vertical side wall at the other end of the machine body. The laser emitted by the laser level is received by the alarm, and the laser spans across the bottom of the machine body. A motor is fixed on the outer wall of the machine body, and the rotating shaft of the motor is fixedly connected to one end of the support rod. When the alarm does not receive the laser, the alarm sends a signal to drive the motor to rotate.

[0014] By adopting the above technical solution, the laser level ensures the accuracy of the measurement. Once the alarm fails to receive the laser, it will send a signal and drive the motor to rotate, thereby supporting the positioning plate against the depression at the bottom of the scraper conveyor. When the depression disappears, the alarm will receive the laser again, and the motor will stop rotating.

[0015] Optionally, the feed pipe is provided with a protrusion, a baffle, a spring and a telescopic rod. The baffle is located at the feed outlet and is rotatably connected to the outer wall of the feed pipe. The protrusion is fixedly connected to the feed pipe and located above the baffle. One end of the telescopic rod is hinged to the protrusion and the other end is hinged to the baffle. The spring is looped on the telescopic rod, with one end of the spring abutting against the protrusion and the other end abutting against the baffle.

[0016] By adopting the above technical solution, the push plate is inserted into the feed inlet, and the end of the push plate lifts the baffle, so that the material enters the storage bin through the feed inlet. When the push plate is withdrawn from the feed inlet, the spring pushes the baffle to block the feed inlet, and the telescopic rod provides the spring's rebound path.

[0017] Optionally, the support rod is surrounded by a triangular tube with a triangular cross-section. The end of the triangular tube is fixedly connected to the machine body. The support rod rotates relative to the triangular tube along its own center line, with one of the tips of the triangular tube facing upwards.

[0018] By adopting the above technical solution, when the support rod is directly subjected to the impact of falling materials for a long time, the rotating connection between the support rod and the machine body will become non-circular, affecting the rotation of the support rod. When a triangular tube is fitted on it, the triangular tube resists the impact of the materials, and at the same time, the triangle is a stable shape that resists impact forces.

[0019] Optionally, multiple reinforcing ribs are fixed to the outer wall of the bottom of the machine body. The length direction of the reinforcing ribs is arranged along the length direction of the support rod, and adjacent reinforcing ribs are spaced apart along the material conveying direction. The positioning plate is located between adjacent reinforcing ribs.

[0020] By adopting the above technical solution, the presence of reinforcing ribs enhances the compressive strength of the bottom of the scraper conveyor, and also strengthens its impact resistance.

[0021] Optionally, the lifting assembly includes a hydraulic cylinder, a wire rope, and a flap. The flap is a component of the storage silo bottom plate. One end of the flap is located in the middle of the inclined area of ​​the storage silo bottom plate, and the other end is located in the middle of the horizontal area of ​​the storage silo bottom plate. The flap is rotatably connected to the storage silo. The rotating shaft is located at the junction of the inclined area and the horizontal area of ​​the storage silo bottom plate. The rotating shaft is perpendicular to the material conveying direction. The hydraulic cylinder is vertically fixed on the top of the storage silo and located away from the feed pipe. One end of the wire rope is fixedly connected to the piston rod of the hydraulic cylinder, and the other end is fixedly connected to the end of the flap away from the feed pipe.

[0022] By adopting the above technical solution, when it is necessary to empty the material in the storage bin, the hydraulic cylinder is activated. The hydraulic cylinder drives the wire rope to move upward, and the wire rope pulls one end of the flap upward. At this time, the flap rotates, and the material slides down the flap into the scraper conveyor. The sliding position is also the position where the material initially fell onto the scraper conveyor, thereby ensuring that the scraper conveyor transports the material to the next process in an orderly and quantitative manner.

[0023] Optionally, a reinforcing plate is provided on the outer wall of the feed pipe. One side of the reinforcing plate is fixedly connected to the outer wall of the feed pipe, and the other side abuts against the top surface of the push plate. The reinforcing plate is triangular in shape.

[0024] By adopting the above technical solution, when the push plate moves towards the feed port, the material in the feed pipe continuously impacts the push plate, and the push plate located outside the feed pipe will tend to tilt upwards. The reinforcing plate blocks the tilting tendency of the push plate and ensures that the push plate is stably inserted at the feed port.

[0025] Optionally, a counterweight is fixed to the bottom of the flap, and the counterweight is located at the end of the flap away from the feed pipe; the length of the horizontal area of ​​the flap is greater than the length of the inclined area of ​​the flap.

[0026] By adopting the above technical solution, the position of the flap's own rotation axis and the presence of the counterweight ensure the smoothness of the flap's descent when it falls back to its original position.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. The laser positioning assembly, motor, connecting chain, support rod, and positioning plate play a role in monitoring and supporting the indentation of the bottom of the machine body, thereby resisting the indentation of the bottom of the machine body;

[0029] 2. The diversion component temporarily alleviates the pressure on the bottom of the machine from subsequent logistics.

[0030] 3. The lifting component effectively redistributes the material from the storage bin to the feed end of the machine. Attached Figure Description

[0031] Figure 1 This is a front structural diagram of an embodiment of this application;

[0032] Figure 2 This is a schematic diagram of the rear structure of an embodiment of this application;

[0033] Figure 3 It is a vertical structural cross-sectional view of the body.

[0034] In the diagram, 1. Machine body; 11. Support rod; 12. Connecting chain; 13. Positioning plate; 14. Motor; 15. Distributor port; 16. Triangular tube; 17. Reinforcing rib; 2. Laser positioning assembly; 21. Laser level; 22. Alarm; 3. Diversion assembly; 31. Cylinder; 32. Push plate; 33. Storage bin; 4. Lifting assembly; 41. Hydraulic cylinder; 42. Wire rope; 43. Flip plate; 5. Feed pipe; 51. Protrusion; 52. Baffle; 53. Spring; 54. Telescopic rod; 55. Reinforcing plate; 6. Counterweight; 7. Discharge pipe. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0036] This application discloses an automatic protection device for a scraper conveyor.

[0037] refer to Figure 1 An automatic protection device for a scraper conveyor includes a body 1 and a diversion assembly 3. The body 1 is equipped with an inlet pipe 5 and an outlet pipe 7. The inlet pipe 5 is located at the top of one end of the body 1, and the outlet pipe 7 is located at the bottom of the other end of the body 1. The material conveying direction is along the direction from the inlet pipe 5 to the outlet pipe 7. The diversion assembly 3 includes a storage bin 33, which is embedded and fixed in the top of the body 1, and its length is along the length of the body 1. When material falls into the scraper conveyor from the inlet pipe 5, and due to prolonged impact on a certain area, or when the amount of material fed exceeds the rated conveying capacity of the scraper conveyor, the storage bin 33 opens, temporarily receiving the material. At this time, the material is not fed into the scraper conveyor, thereby reducing the impact on the bottom of the scraper conveyor and providing protection.

[0038] refer to Figure 2 and Figure 3 The machine body 1 is equipped with a support rod 11, a triangular tube 16, a motor 14, a connecting chain 12, and a positioning plate 13. Multiple reinforcing ribs 17 are fixed to the bottom of the machine body 1. The reinforcing ribs 17 are horizontally arranged and perpendicular to the material conveying direction. Adjacent reinforcing ribs 17 are spaced apart along the material conveying direction. The area covered by the reinforcing ribs 17 is only the bottom area of ​​the machine body 1 directly opposite the feed pipe 5. The length direction of the positioning plate 13 is the same as the length direction of the reinforcing ribs 17. The positioning plate 13 is located between adjacent reinforcing ribs 17 and abuts against the outer wall of the bottom of the machine body 1. The length directions of the support rod 11 and the triangular tube 16 are both perpendicular to the material conveying direction. The positioning plates 13 are aligned along their length. The triangular tube 16 is located directly below the feed pipe 5 and is fixedly connected to the machine body 1, passing through it. The support rod 11 is located inside the triangular tube 16 and is rotatably connected to it, with its rotation axis being the center line of the support rod 11. The end of the support rod 11 is located outside the triangular tube 16. One end of the connecting chain 12 is fixedly connected to the end of the support rod 11, and the other end is fixedly connected to the end of the positioning plate 13. Two connecting chains 12 are provided. The motor 14 is fixed to the outer wall of the machine body 1, and its rotation axis is fixedly connected to the end face of one end of the support rod 11. The triangular tube 16 has a triangular cross-section, with one edge of the triangular tube 16 facing upwards.

[0039] refer to Figure 1 and Figure 3 One end of the storage hopper 33 abuts against the outer wall of the feed pipe 5. The feed pipe 5 is provided with a distribution port 15, which connects the inside of the feed pipe 5 and the inside of the storage hopper 33. The feed pipe 5 is provided with a diversion component 3, which also includes a push plate 32 and a cylinder 31. The cylinder 31 is inclined, and the inclination direction is inclined downward along the direction close to the storage hopper 33. The push plate 32 is inserted into the side wall of the feed pipe 5 away from the storage hopper 33. The piston rod of the cylinder 31 is fixedly connected to the push plate 32. The push plate 32 is inclined, and the inclination direction is the same as the inclination direction of the cylinder 31.

[0040] refer to Figure 1 and Figure 3 The feed pipe 5 is provided with a protrusion 51, a baffle 52, a spring 53 and a telescopic rod 54 on the outer wall of the feed pipe 5 which is enclosed by the storage bin 33. The protrusion 51 is fixedly connected to the outer wall of the feed pipe 5 and is located above the distributing port 15. The baffle 52 is hinged to the outer wall of the feed pipe 5, with the hinge shaft located above the distributing port 15. The baffle 52 is located below the protrusion 51 and completely covers the distributing port 15. One end of the telescopic rod 54 is hinged to the protrusion 51 and the other end is hinged to the baffle 52. The spring 53 is looped on the telescopic rod 54. One end of the spring 53 abuts against the protrusion 51 and the other end abuts against the baffle 52. The telescopic rod 54 is a rod that can compress and recover itself.

[0041] refer to Figure 1 and Figure 3 The storage bin 33 is equipped with a lifting component 4, which includes a flap 43, a hydraulic cylinder 41, and a wire rope 42. The flap 43 is part of the bottom of the storage bin 33. The bottom of the storage bin 33 is composed of an inclined area and a horizontal area. The inclined area is near the feed pipe 5 and is inclined downward in the direction away from the feed pipe 5. The horizontal area is then formed. The length of the flap 43 is set along the material conveying direction. The flap 43 is rotatably connected to the storage bin 33. The rotation axis is at the junction of the horizontal area and the inclined area. The length of the horizontal area occupied by the flap 43 is greater than the length of the inclined area occupied by the flap 43. A counterweight 6 is fixed at the bottom of the flap 43. The counterweight 6 is located at the end of the flap 43 away from the feed pipe 5.

[0042] refer to Figure 3 The hydraulic cylinder 41 is vertically fixed to the top of the storage bin 33. One end of the steel wire rope 42 is fixedly connected to the end of the piston rod of the hydraulic cylinder 41, and the other end passes through the top of the storage bin 33 and is fixedly connected to the flap 43. The fixed connection point is located at the end of the flap 43 away from the feed pipe 5.

[0043] refer to Figure 3 A laser positioning assembly 2 is fixed on the vertical outer wall of the machine body 1. The laser positioning assembly 2 includes a laser level 21 and an alarm 22, which are distributed at both ends of the machine body 1 along the material conveying direction. When the bottom of the machine body 1 sinks, blocking the laser emitted by the laser level 21, the alarm 22 cannot receive the laser and sends a signal to drive the motor 14 to start. The motor 14 pulls the positioning rod upward to resist the sinking of the bottom of the machine body 1 until the alarm 22 can receive the laser again.

[0044] The implementation principle of the automatic protection device for a scraper conveyor in this application embodiment is as follows: When the bottom of the machine body 1 sinks, blocking the laser emitted by the laser level 21, the alarm 22 cannot receive the laser and sends a signal to drive the motor 14 to start. The motor 14 pulls the positioning rod upward to resist the sinking of the bottom of the machine body 1 until the alarm 22 receives the laser again. The cylinder 31 is then activated to push the push plate 32 to cut off the feed pipe 5, allowing subsequent materials to enter the storage bin 33, thereby reducing the pressure on the bottom of the machine body 1. When it is necessary to release the material in the storage bin 33, the material in the storage bin 33 can be put back into the feed end of the machine body 1 through the lifting component 4.

[0045] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An automatic protection device for a scraper conveyor, comprising a body (1), characterized in that: It also includes a support rod (11), a connecting chain (12), a positioning plate (13), and a laser positioning assembly (2) installed on the machine body (1). The support rod (11) runs horizontally through the vertical sidewalls on both sides of the machine body (1). The support rod (11) is perpendicular to the material conveying direction. The support rod (11) is rotatably connected to the machine body (1), and the rotation axis is the center line of the support rod (11). The positioning plate (13) abuts against the bottom outer wall of the machine body (1). One end of the connecting chain (12) is fixedly connected to one end of the support rod (11), and the other end is fixedly connected to one end of the positioning plate (13). Two connecting chains (12) are provided. The laser positioning assembly (2) is connected to the machine body. (1) The outer wall is fixedly connected, and the laser positioning component (2) is used to monitor whether the bottom of the machine body (1) is dented; it also includes a diversion component (3) set on the machine body (1), the diversion component (3) includes a cylinder (31), a push plate (32) and a storage bin (33); the top of the machine body (1) is provided with a feed pipe (5), the storage bin (33) is fixed on the machine body (1) and the inside of the storage bin (33) is fixedly connected to the outer wall of the feed pipe (5), the cylinder (31) is fixed on the outer wall of the feed pipe (5) away from the storage bin (33), the push plate (32) is obliquely inserted into the feed pipe (5), and the oblique direction is inclined towards the direction close to the storage bin (33). Below, one end of the piston rod of the cylinder (31) is fixedly connected to the push plate (32), and a feed port (15) is provided on the feed pipe (5) for communicating between the inside of the feed pipe (5) and the inside of the storage bin (33). The end of the push plate (32) is inserted into the feed port (15); a lifting assembly (4) is provided on the storage bin (33) for controlling whether the inside of the storage bin is connected to the inside of the scraper conveyor; the bottom of the storage bin (33) is in a state of first tilting and then horizontal, and the tilting direction is downward along the direction away from the feed pipe (5); the lifting assembly (4) includes a hydraulic cylinder (41), a wire rope (42) and a flap (43), the flap (43) The flap (43) is a component of the bottom plate of the storage silo (33). One end of the flap (43) is located in the middle of the inclined area of ​​the bottom plate of the storage silo (33), and the other end is located in the middle of the horizontal area of ​​the bottom plate of the storage silo (33). The flap (43) is rotatably connected to the storage silo (33). The rotating shaft is located at the junction of the inclined area and the horizontal area of ​​the bottom plate of the storage silo (33). The rotating shaft is perpendicular to the material conveying direction. The hydraulic cylinder (41) is vertically fixed on the top of the storage silo (33) and located away from the feed pipe (5). One end of the wire rope (42) is fixedly connected to the piston rod of the hydraulic cylinder (41), and the other end is fixedly connected to the end of the flap (43) away from the feed pipe (5).

2. The automatic protection device for a scraper conveyor according to claim 1, characterized in that: The laser positioning component (2) includes a laser level (21) and an alarm (22). Along the conveying direction of the scraper conveyor, the laser level (21) is fixed on the vertical side wall of one end of the machine body (1), and the alarm (22) is suspended and fixed on the vertical side wall of the other end of the machine body (1). The laser emitted by the laser level (21) is received by the alarm (22), and the laser spans the bottom of the machine body (1). A motor (14) is fixed on the outer wall of the machine body (1), and the rotating shaft of the motor (14) is fixedly connected to one end of the support rod (11). When the alarm (22) does not receive the laser, the alarm (22) sends a signal to drive the motor (14) to rotate.

3. The automatic protection device for a scraper conveyor according to claim 1, characterized in that: The feed pipe (5) is provided with a protrusion (51), a baffle (52), a spring (53) and a telescopic rod (54). The baffle (52) is located at the feed outlet (15) and is rotatably connected to the outer wall of the feed pipe (5). The protrusion (51) is fixedly connected to the feed pipe (5) and located above the baffle (52). One end of the telescopic rod (54) is hinged to the protrusion (51) and the other end is hinged to the baffle (52). The spring (53) is looped on the telescopic rod (54). One end of the spring (53) abuts against the protrusion (51) and the other end abuts against the baffle (52).

4. The automatic protection device for a scraper conveyor according to claim 1, characterized in that: The support rod (11) is surrounded by a triangular tube (16). The triangular tube (16) has a triangular cross section. The end of the triangular tube (16) is fixedly connected to the body (1). The support rod (11) rotates relative to the triangular tube (16) along its own center line. One of the tips of the triangular tube (16) is set facing upward.

5. The automatic protection device for a scraper conveyor according to claim 1, characterized in that: The bottom outer wall of the machine body (1) is fixed with multiple reinforcing ribs (17). The length direction of the reinforcing ribs (17) is set along the length direction of the support rod (11). Adjacent reinforcing ribs (17) are spaced apart along the material conveying direction. The positioning plate (13) is located between adjacent reinforcing ribs (17).

6. The automatic protection device for a scraper conveyor according to claim 1, characterized in that: A reinforcing plate (55) is provided on the outer wall of the feed pipe (5). One side of the reinforcing plate (55) is fixedly connected to the outer wall of the feed pipe (5), and the other side abuts against the top surface of the push plate (32). The reinforcing plate (55) is triangular.

7. The automatic protection device for a scraper conveyor according to claim 1, characterized in that: The bottom of the flap (43) is fixed with a counterweight (6), which is located at the end of the flap (43) away from the feed pipe (5); the length of the horizontal area of ​​the flap (43) is greater than the length of the inclined area of ​​the flap (43).

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