A reciprocating feeder capable of automatically detecting and preventing bin leakage

Abstract

The present invention belongs to the technical field of coal mine machinery, and relates to a reciprocating feeder, and specifically to a reciprocating feeder that can automatically detect and prevent bunker leakage. When bunker leakage occurs, coal is ejected onto the front sealing plate, and the force sensor detects the thrust. The electronic control system determines that a bunker leakage accident has occurred, and the sealing plate hydraulic cylinder drives the front sealing plate to flip backward and downward, and the front sealing plate blocks the outlet in front of the channel, so that the winding assembly winds the wire rope, and the wire rope pulls the rear gate plate, and the coal flow causes the rear gate plate to flip forward, and the rear gate plate completely blocks the coal flow channel. When the coal flow pushes the front sealing plate to flip forward and upward, the locking surface extends into the anti-retraction groove and will not retreat, and the front sealing plate is locked and cannot flip forward and upward. The beneficial effects of the present invention are: timely and automatic detection of bunker leakage, taking two measures to timely and quickly cut off the coal flow channel, compared with manual visual inspection and closing the gate, it has high reliability and timely response, and avoids large economic losses and casualties in coal mine production enterprises.

Description

Technical Field

[0001] The invention belongs to the technical field of coal mine machinery and relates to a reciprocating feeder, in particular to a reciprocating feeder capable of automatically detecting and preventing bin leakage. Background Art

[0002] The reciprocating feeder for coal mines comprises a guide trough 1, a lower roller 2, a feed plate 7, a connecting rod 8, a feed motor 9 and a chute; the guide trough 1 comprises a connecting section 11, a rear side plate 12, a left side plate 131 and a right side plate 132 which are fixedly connected to each other; the left side plate 131 is on the left, the right side plate 132 is on the right, and the rear side plate 12 is at the rear; the lower end of the guide trough 1 is connected to the lower roller 2 through a rotating pair, and the feed plate 7 is placed on the lower roller 2; the rear end of the feed plate 7 is connected to the front end of the connecting rod 8 through a hinge, and an eccentric pin 9 is provided on the output shaft of the feed motor 9 1, the rear end of the connecting rod 8 is connected to the eccentric pin 91 through a rotating pair; the connecting section 11 is at the upper end of the rear part of the guide trough; the upper end of the connecting section 11 is connected to the funnel mouth at the lower end of the coal bunker, and the coal in the coal bunker falls onto the feeding plate 7, and the feeding motor 9 drives the feeding plate 7 to reciprocate, and the lower roller 2 passively reciprocates to transport the coal forward intermittently and fall from the front end; sometimes the coal is output forward faster and farther, so a chute is set at the front end of the guide trough 1, and a baffle is set in front of the front discharge port of the guide trough 1 to block the coal and prevent it from being output far away.

[0003] The coal in the coal bunker, especially the coal bunker in the coal mine, has not been graded yet. There are large and small particles and powder, and there may be water mixed in it. Small particles are embedded in the middle of large particles, and powder is embedded in the small particles. The coal is silted together and cannot flow down when there is water in the upper layer. When the reciprocating feeder feeds downward, the coal seam is loose, and sometimes there is a phenomenon of bunker leakage. Water and coal are mixed together and flow down through the funnel mouth and the guide chute 1. The large amount of gravitational potential energy of the mixture of water and coal in the coal bunker is converted into kinetic energy, and gushes forward at a very fast speed, just like the mudslide on the ground. If it is not stopped in time, it will cause great destructiveness, damage equipment, injure workers, and even cause death. Some reciprocating feeders are equipped with a hydraulic gate at the connection between the connecting section 11 and the side plate. When workers visually observe coal leakage, they go to close the gate. However, the workers react slowly and the hydraulic gate often closes slowly, and it cannot be stopped in time. By the time the gate is closed, some degree of damage may have been caused. So far, there is no technology for timely and automatic detection of coal leakage, nor is there a way to quickly and timely close the coal flow channel. Summary of the invention

[0004] The purpose of the present invention is to improve the deficiencies of the prior art and to provide a reciprocating feeder which can automatically detect the occurrence of bunker leakage in a timely manner, take two measures to promptly and quickly cut off the coal flow channel, and automatically detect and prevent bunker leakage with high reliability.

[0005] The present invention is achieved through the following technical solutions:

[0006] A reciprocating feeder capable of automatically detecting and preventing bin leakage comprises a guide trough, a lower roller, a feeding plate, a connecting rod, a feeding motor and a chute; the guide trough comprises a connecting section, a rear side plate, a left side plate and a right side plate which are fixedly connected to each other; the left side plate is on the left, the right side plate is on the right, and the rear side plate is at the rear; the lower end of the guide trough is connected to the lower roller through a rotating pair, and the feeding plate is placed on the lower roller; the rear end of the feeding plate is connected to the front end of the connecting rod through a hinge, an eccentric pin is provided on the output shaft of the feeding motor, and the rear end of the connecting rod is connected to the eccentric pin through a rotating pair; the connecting section is at the upper end of the rear part of the guide trough;

[0007] In this embodiment, no chute is provided at the front end of the material guide chute, but a front sealing plate and a sealing plate hydraulic cylinder are provided; the material guide chute also includes an upper sealing plate, which is fixedly connected to the front of the connecting section and the "upper ends of the left plate and the right plate", and the upper sealing plate, the feeding plate, the left plate and the right plate together form a channel in the front-to-back direction; the front sealing plate is inclined along the rear-upper-front-lower direction, and the rear upper end of the front sealing plate is connected to the front end of the upper sealing plate by a hinge; the sealing plate hydraulic cylinder includes a force sensor, and the cylinder body of the sealing plate hydraulic cylinder is connected to the frame by a hinge, and the end of the piston rod of the sealing plate hydraulic cylinder is connected to the first end of the force sensor, and the second end of the force sensor is connected to the front sealing plate by a hinge, and the sealing plate hydraulic cylinder drives the front sealing plate to flip backward and downward, and the front sealing plate blocks the outlet in front of the channel;

[0008] In normal production, the coal flows slowly and does not gush forward quickly. The coal falls immediately at a distance close to the exit in front of the passage, and the coal flow does not hit the front sealing plate. The front sealing plate, the front end of the left plate and the front end of the right plate together act as a chute. When bunker leakage occurs, the coal gushes forward at an extremely fast speed and the distance of the coal spraying forward is relatively far. The coal is sprayed onto the front sealing plate, which exerts a large thrust on the front sealing plate. When the force sensor detects that the thrust exceeds a preset limit value, an alarm signal is generated and transmitted to the electronic control system. The electronic control system determines that a bunker leakage accident has occurred, so the electronic control system immediately sends a command to shut down the feeding motor and stop feeding forward. The sealing plate hydraulic cylinder drives the front sealing plate to flip backward and downward, and the front sealing plate blocks the exit in front of the passage, thereby preventing the coal flow and preventing bunker leakage from continuing.

[0009] Compared with the traditional reciprocating feeder, the upper sealing plate provided in this embodiment also plays a key role. It can cooperate with the feeding plate, the left plate, the right plate and the front sealing plate to form a closed space to prevent the coal flow from rising upward. At the same time, the upper sealing plate also prevents coal dust from being raised during normal operation, thereby protecting the working environment.

[0010] The front sealing plate mentioned above closes the outlet in front of the channel only when driven by the sealing plate hydraulic cylinder. However, the working efficiency of the hydraulic cylinder is often very slow and the channel cannot be closed in time. This embodiment also provides another device that can quickly and timely cut off the coal flow.

[0011] The present embodiment also includes a rope winding assembly and a rear gate plate; a rear supporting plate is also provided at the lower end of the rear side plate, the rear gate plate is in the material guide trough, the lower end of the rear gate plate is supported by the rear supporting plate, the rear gate plate is attached to the plane formed by the rear side plate and a plate behind the connecting section, an elastic bent plate is also provided on a plate behind the connecting section, the elastic bent plate fixes the upper end of the rear gate plate by elastic force, when the reciprocating feeder is working normally, the rear gate plate is stationary, the volume occupied is not large, and there is almost no effect on the feeding work of the reciprocating feeder; the rope winding assembly includes a rope winding roller, a rope winding motor and a wire rope; the rope winding roller and the rope winding motor are both arranged outside the material guide trough, the rope winding roller is connected to the material guide trough through a rotating pair, the output shaft of the rope winding motor is fixedly connected to the rope winding roller, the first end of the wire rope is fixed on the rope winding roller, the wire rope passes through the rope hole on a plate in front of the connecting section and enters the connecting section, and the second end of the wire rope is fixed to the upper end of the rear gate plate.

[0012] In order to prevent coal blocks from damaging the wire rope, rope grooves are provided on the left and right plates of the connecting section, and the wire rope is hidden in the rope grooves.

[0013] When the bunker is in a state of collapse, the electric control system simultaneously sends a command to make the rope winding assembly wind up the wire rope, and the wire rope pulls the rear gate plate. The upper end of the rear gate plate overcomes the elastic force of the elastic bending plate and is pulled to tilt forward, and the lower end of the rear gate plate flips on the rear supporting plate, but the position remains unchanged. When the upper end of the rear gate plate tilts at a small angle, a wedge-shaped space with a large upper opening and a sharp corner at the bottom is formed between the rear gate plate and the "plane formed by the rear side plate and a plate behind the connecting section". The coal flow coming down from above quickly enters the space, and the lower area covered by the rear gate plate is empty. The coal flow will prompt the rear gate plate to continue to tip forward, rather than just being driven by the rope winding motor to tip forward. The more it tips forward, the more coal enters the wedge-shaped space, and the more the rear gate plate is prompted to tip forward at a faster speed, until the upper end of the rear gate plate rests on a plate in front of the connecting section and can no longer tip forward. The rear gate plate completely blocks the passage of the coal flow, thereby achieving the purpose of quickly cutting off the coal flow.

[0014] The shape of the rope storage groove is made into an arc shape, and the shape of the rope storage groove is exactly the trajectory shape of the second end of the wire rope fixed on the rear gate plate as the rear gate plate flips. The wire rope applies force along the tangent direction of the fixed point, and the force arm of the applied tension is kept at the maximum, and the force effect is better.

[0015] The sealing plate hydraulic cylinder mentioned above drives the front sealing plate to flip backward and downward. It can be pushed when the thrust of the coal flow is small, but it may not be pushed when the coal flow is very rapid, and even the front sealing plate is pushed open, the sealing plate hydraulic cylinder is pushed back, or the control valve and control pipeline of the sealing plate hydraulic cylinder are damaged. At this time, the front sealing plate cannot be allowed to be pushed open, and measures must be taken to lock the front sealing plate. A pawl and a spring are also provided on the front sealing plate. The pawl and the front sealing plate are connected through a moving pair. The left / right end of the pawl is provided with an inclined surface and a locking surface. The inclined surface faces the rear lower left / rear lower right, and the locking surface faces the front upper part. The intersection of the inclined surface and the locking surface, that is, the left / right end of the pawl is a wedge angle, and a plurality of backstop grooves are respectively provided on the left plate and the right plate; the spring pushes the pawl to move left / right, and when the wedge angle extends into the backstop groove, the inclined surface rests on the rear lower edge of the backstop groove. When the sealing plate hydraulic cylinder drives the front sealing plate to continue to flip backward and downward, the inclined surface is on the edge of the backstop groove. The pawl overcomes the elastic force of the spring and retreats to the right / left until the tip of the wedge angle presses against the right / left side of the left plate / right plate, and slides on the side until the wedge angle extends into the next non-retracting groove. It can be seen that the combination of the pawl and the non-retracting groove will not prevent the front sealing plate from flipping toward the rear and downward direction; however, when the coal flow pushes the front sealing plate to flip toward the front and upward direction, the locking surface extends into the non-retracting groove and will not retreat, and the front sealing plate is locked and cannot flip toward the front and upward direction, thereby achieving the purpose of preventing the continued development of the bunker leakage and protecting the control valve and control pipeline of the sealing plate hydraulic cylinder from being damaged.

[0016] The beneficial effects of the present invention are: timely and automatic detection of the occurrence of bunker leakage, and taking two measures to promptly and quickly cut off the coal flow channel. Compared with manual visual inspection and closing the gate, it has high reliability and timely response, avoiding large economic losses and casualties in coal mine production enterprises. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of a three-dimensional structure of an embodiment of the present invention from a first viewing angle;

[0018] Figure 2 is a schematic diagram of a three-dimensional structure from a second viewing angle of an embodiment of the present invention;

[0019] Figure 3 is a front cross-sectional view of an embodiment of the present invention, in a normal production state;

[0020] Figure 4 It is a front cross-sectional view of an embodiment of the present invention, showing the situation when after bunker leakage occurs, the front sealing plate 3 blocks the outlet in front of the channel, and the rear gate plate 6 completely blocks the channel for coal flow;

[0021] Figure 5 It is a partial cross-sectional schematic diagram of the three-dimensional structure of the material guide trough 1;

[0022] Figure 6 3 is a schematic diagram of the three-dimensional structure of the front sealing plate 3;

[0023] Figure 7 is a schematic diagram of the three-dimensional structure of the pawl 31;

[0024] Figure 8 is a schematic diagram of the three-dimensional structure of the rope winding assembly 5;

[0025] As shown in the figure: 1. material guide trough; 11. connecting section; 111. elastic bending plate; 112. rope storage groove; 113. rope hole; 12. rear side plate; 121. rear support plate; 131. left side plate; 132. right side plate; 133. anti-retraction groove; 14. upper sealing plate; 15. front side plate;

[0026] 2. Lower roller; 3. Front sealing plate; 31. Ratchet; 311. Inclined surface; 312. Locking surface; 32. Spring;

[0027] 4. Sealing plate hydraulic cylinder; 41. Force sensor; 5. Rope winding assembly; 51. Rope winding roller; 52. Rope winding motor; 53. Wire rope;

[0028] 6. Rear gate; 7. Feeding plate; 8. Connecting rod; 9. Feeding motor; 91. Eccentric pin. DETAILED DESCRIPTION

[0029] The present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0030] Example: See Figures 1 to 8 A reciprocating feeder capable of automatically detecting and preventing bin leakage comprises a guide trough 1, a lower roller 2, a feed plate 7, a connecting rod 8, a feed motor 9 and a chute; the guide trough 1 comprises a connecting section 11, a rear side plate 12, a left side plate 131 and a right side plate 132 which are fixedly connected to each other; the left side plate 131 is on the left, the right side plate 132 is on the right, and the rear side plate 12 is at the rear; the lower end of the guide trough 1 is connected to the lower roller 2 through a rotating pair, and the feed plate 7 is placed on the lower roller 2; the rear end of the feed plate 7 is connected to the front end of the connecting rod 8 through a hinge, an eccentric pin 91 is provided on the output shaft of the feed motor 9, and the rear end of the connecting rod 8 is connected to the eccentric pin 91 through a rotating pair; the connecting section 11 is at the upper end of the rear part of the guide trough;

[0031] In this embodiment, no chute is provided at the front end of the material guide trough 1, but a front sealing plate 3 and a sealing plate hydraulic cylinder 4 are provided; the material guide trough 1 also includes an upper sealing plate 14, which is fixedly connected to the front of the connecting section 11, "the upper ends of the left plate 131 and the right plate 132", and the upper sealing plate 14, the feeding plate 7, the left plate 131 and the right side plate 132 together form a channel in the front-to-back direction; the front sealing plate 3 is tilted along the rear-upper-front-lower direction, and the rear upper end of the front sealing plate 3 is connected to the front end of the upper sealing plate 14 by a hinge; the sealing plate hydraulic cylinder 4 includes a force sensor 41, the cylinder body of the sealing plate hydraulic cylinder 4 is connected to the frame by a hinge, the piston rod end of the sealing plate hydraulic cylinder 4 is connected to the first end of the force sensor 41, and the second end of the force sensor 41 is connected to the front sealing plate 3 by a hinge, and the sealing plate hydraulic cylinder 4 drives the front sealing plate 3 to flip backward and downward, and the front sealing plate 3 blocks the outlet in front of the channel;

[0032] In normal production, the speed of coal flow is slow and it will not gush out quickly to the front. The coal will fall immediately at a distance close to the outlet in front of the passage, and the coal flow will not hit the front sealing plate 3. When bunker leakage occurs, it will gush out to the front at an extremely fast speed and the distance of the coal spraying to the front is relatively far. The coal will be sprayed onto the front sealing plate 3, which will generate a large thrust on the front sealing plate 3. When the force sensor 41 detects that the thrust exceeds a preset limit value, the electronic control system determines that a bunker leakage accident has occurred and generates an alarm electrical signal to transmit to the electronic control system. Then the electronic control system immediately sends an instruction to shut down the feeding motor 9 and stop feeding forward. The sealing plate hydraulic cylinder 4 drives the front sealing plate 3 to flip backward and downward, and the front sealing plate 3 blocks the outlet in front of the passage, thereby preventing the coal flow and preventing the bunker leakage from continuing.

[0033] Compared with the traditional reciprocating feeder, the upper sealing plate 14 provided in this embodiment also plays a key role. It can cooperate with the feeding plate 7, the left plate 131, the right plate 132 and the front sealing plate 3 to form a closed space to prevent the coal flow from rising upward. At the same time, the upper sealing plate 14 also prevents coal dust from being raised during normal operation, thereby protecting the working environment.

[0034] The front sealing plate 3 mentioned above closes the outlet in front of the channel only when driven by the sealing plate hydraulic cylinder 4, but the working efficiency of the hydraulic cylinder is often very slow and the channel cannot be closed in time. This embodiment also provides another device that can quickly and timely cut off the coal flow.

[0035] The present embodiment further comprises a rope winding assembly 5 and a rear gate plate 6; a rear supporting plate 121 is further provided at the lower end of the rear side plate 12, the rear gate plate 6 is in the guide trough 1, the lower end of the rear gate plate 6 is supported by the rear supporting plate 121, the rear gate plate 6 is attached to a plane formed by the rear side plate 12 and a plate behind the connecting section 11, an elastic bent plate 111 is further provided on a plate behind the connecting section 11, the elastic bent plate 111 fixes the upper end of the rear gate plate 6 by elastic force, when the reciprocating feeder is working normally, the rear gate plate 6 is stationary, and the volume occupied is not large, which is convenient for the reciprocating feeder. The feeding work of the feeder is almost not affected; the rope winding assembly 5 includes a rope winding roller 51, a rope winding motor 52 and a wire rope 53; the rope winding roller 51 and the rope winding motor 52 are both arranged outside the material guide trough, the rope winding roller 51 is connected to the material guide trough through a rotating pair, the output shaft of the rope winding motor 52 is fixedly connected to the rope winding roller 51, the first end of the wire rope 53 is fixed on the rope winding roller 51, the wire rope 53 passes through the rope hole 113 on the front plate of the connecting section 11 and enters the connecting section 11, and the second end of the wire rope 53 is fixed to the upper end of the rear gate plate 6.

[0036] In order to prevent the coal block from damaging the steel wire rope 53 , rope-hiding grooves 112 are provided on the plates on the left and right sides of the connecting section 11 , and the steel wire rope 53 is hidden in the rope-hiding grooves 112 .

[0037] When the warehouse is in a state of being ... The coal flow coming down from above quickly enters the space, and the area below covered by the rear gate plate 6 is empty. The coal flow will prompt the rear gate plate 6 to continue to tip over forward, rather than just being driven by the rope winding motor 52 to tilt forward. The more it tilts forward, the more coal enters the wedge-shaped space, which prompts the rear gate plate 6 to tip forward at a faster speed, until the upper end of the rear gate plate 6 rests on a front plate in the connecting section 11 and can no longer tilt forward. The rear gate plate 6 then completely blocks the passage of the coal flow, thereby achieving the purpose of quickly cutting off the coal flow.

[0038] The shape of the rope storage groove 112 is made into an arc shape. The shape of the rope storage groove 112 is exactly the shape of the trajectory line of the second end of the wire rope 53 fixed on the rear gate plate 6 as the rear gate plate 6 flips. The wire rope applies force along the tangent direction of the fixed point, and the force arm of the applied tension is kept at the maximum, and the force effect is better.

[0039] The sealing plate hydraulic cylinder 4 mentioned above drives the front sealing plate 3 to flip backward and downward. It can be pushed when the thrust of the coal flow is small, but it may not be pushed when the coal flow is very rapid, and even the front sealing plate 3 may be pushed open, the sealing plate hydraulic cylinder 4 may be pushed back, or the control valve and control pipeline of the sealing plate hydraulic cylinder 4 may be damaged. At this time, the front sealing plate 3 cannot be allowed to be pushed open, and measures must be taken to lock the front sealing plate 3. The front sealing plate 3 is also provided with a pawl 31 and a spring 32. The pawl 31 and the front sealing plate 3 are connected by a moving pair. The left end / right end of the pawl 31 is provided with an inclined surface 311 and a locking surface 312. The inclined surface 311 faces the rear lower left / rear lower right, and the locking surface 312 faces the front upper part. The intersection of the inclined surface 311 and the locking surface 312, that is, the left end / right end of the pawl 31 is a wedge angle. A plurality of stop grooves 133 are respectively provided on the left side plate 131 and the right side plate 132; the spring 32 pushes the pawl 31 to move left / right. When the wedge angle extends into the stop groove 133, the inclined surface 311 rests on the rear lower edge of the stop groove 133. When the sealing plate hydraulic cylinder 4 drives the front sealing plate 3 to continue to flip backward and downward, The inclined surface 311 slides on the edge of the anti-recession groove 133, and the pawl 31 overcomes the elastic force of the spring 32 and retreats to the right / left until the tip of the wedge angle hits the right / left side surface of the left plate 131 / right plate 132, and slides on the side until the wedge angle extends into the next anti-recession groove 133. It can be seen that the combination of the pawl 31 and the anti-recession groove 133 will not prevent the front sealing plate 3 from flipping toward the rear and lower part; but when the coal flow pushes the front sealing plate 3 to flip toward the front and upper part, the locking surface 312 extends into the anti-recession groove 133 and will not retreat, and the front sealing plate 3 is locked and cannot flip toward the front and upper part, thereby achieving the purpose of preventing the continued development of the warehouse leakage and protecting the control valve and control pipeline of the sealing plate hydraulic cylinder 4 from being damaged.

Claims

1. A reciprocating feeder capable of automatically detecting and preventing bin leakage, comprising a guide trough, a lower roller, a feed plate, a connecting rod, a feed motor and a chute; the guide trough comprises a connecting section, a rear side plate, a left side plate and a right side plate fixedly connected to each other; the left side plate is on the left, the right side plate is on the right, and the rear side plate is at the rear; the lower end of the guide trough is connected to the lower roller through a rotating pair, and the feed plate is placed on the lower roller; the rear end of the feed plate is connected to the front end of the connecting rod through a hinge, an eccentric pin is provided on the output shaft of the feed motor, and the rear end of the connecting rod is connected to the eccentric pin through a rotating pair; the connecting section is at the upper end of the rear part of the guide trough; Features: It also includes a front sealing plate and a sealing plate hydraulic cylinder; the material guide trough also includes an upper sealing plate, which is fixedly connected to the front of the connecting section, and the upper sealing plate, the feeding plate, the left plate and the right plate together form a channel in the front-to-back direction; the front sealing plate is tilted in the direction of rear upper-front lower, and the rear upper end of the front sealing plate is connected to the front end of the upper sealing plate by a hinge; the sealing plate hydraulic cylinder includes a force sensor, the cylinder body of the sealing plate hydraulic cylinder is connected to the frame by a hinge, the piston rod end of the sealing plate hydraulic cylinder is connected to the first end of the force sensor, and the second end of the force sensor is connected to the front sealing plate by a hinge, and the sealing plate hydraulic cylinder drives the front sealing plate to flip backward and downward, and the front sealing plate blocks the outlet in front of the channel; It also includes a rope winding assembly and a rear gate plate; a rear supporting plate is also provided at the lower end of the rear side plate, the rear gate plate is in the material guide trough, the lower end of the rear gate plate is supported by the rear supporting plate, the rear gate plate is attached to a plane formed by the rear side plate and a plate behind the connecting section, an elastic bent plate is also provided on a plate behind the connecting section, the elastic bent plate fixes the upper end of the rear gate plate by elastic force; the rope winding assembly includes a rope winding roller, a rope winding motor and a wire rope; the rope winding roller and the rope winding motor are both provided outside the material guide trough, the rope winding roller is connected to the material guide trough through a rotating pair, the output shaft of the rope winding motor is fixedly connected to the rope winding roller, the first end of the wire rope is fixed on the rope winding roller, the wire rope passes through a rope hole on a plate in front of the connecting section and enters the connecting section, and the second end of the wire rope is fixed to the upper end of the rear gate plate; A pawl and a spring are also provided on the front sealing plate. The pawl and the front sealing plate are connected by a moving pair. The left / right end of the pawl is provided with an inclined surface and a locking surface, the inclined surface faces the rear lower left / rear lower right, and the locking surface faces the front upper part. The intersection of the inclined surface and the locking surface, that is, the left / right end of the pawl is a wedge angle, and a plurality of stop grooves are respectively provided on the left plate and the right side plate; the spring pushes the pawl to move left / right, and when the wedge angle extends into the stop groove, the inclined surface rests on the rear lower edge of the stop groove, and when the sealing plate hydraulic cylinder drives the front sealing plate to continue to flip backward and downward, the inclined surface slides on the edge of the stop groove, and the pawl overcomes the elastic force of the spring and retreats to the right / left until the tip of the wedge angle presses on the right / left surface of the left plate / right plate, until the wedge angle extends into the next stop groove again; but when the coal flow pushes the front sealing plate to flip forward and upward, the locking surface extends into the stop groove, and the front sealing plate is locked; Rope storage grooves are respectively arranged on the left plate and the right plate of the connecting section, and the steel wire rope is hidden in the rope storage grooves.

2. The reciprocating feeder capable of automatically detecting and preventing bin cross-stack according to claim 1, characterized in that: The shape of the rope storage groove is made into an arc shape.

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