Protective device for feed port of reversed loader on coal face

Abstract

The invention relates to the technical field of safety protection equipment, and provides a coal face reversed loader feed port protection device which comprises a supporting column, and an inductor mounting plate and a switch mounting plate are fixedly arranged on the supporting column; an infrared receiving unit is fixedly arranged on the sensor mounting plate; a pull rope switch is fixedly arranged on the switch mounting plate; one end of the emergency stop rod is fixedly connected with a handle rod, and the other end of the emergency stop rod is connected with a pull rope switch; when the infrared receiving unit detects a signal sent by an emitter carried by a person, an alarm signal or a shutdown signal is sent out. And the handle rod is pressed down to enable the emergency stop rod to rotate, so that the pull rope switch is pulled, and the pull rope switch sends out a stop signal. Therefore, double insurance is formed through the infrared receiving unit and the pull rope switch, that is, a shutdown protection signal can be sent out when it is sensed that an operator gets close to the feeding port within a certain range; and meanwhile, the machine can be stopped in time in an emergency when an operator falls into the feeding opening. And the protection safety coefficient is obviously improved.

Description

Technical Field

[0001] The invention belongs to the technical field of safety protection equipment, and in particular relates to a feeding port protection device for a transfer machine on a coal mining face. Background Art

[0002] If an operator mistakenly enters or falls into the feed port of the transfer machine, he or she may be pulled in by the equipment, causing personal injury or even death. Therefore, an emergency stop hand zipper is usually set at the feed port. Once an operator mistakenly enters, he or she can pull the zipper to make the equipment stop urgently to avoid being pulled in.

[0003] However, the zipper needs to be actively pulled by the person who accidentally falls into the feed inlet of the transfer machine in order to work. When a person falls into the feed inlet of the transfer machine, he or she will usually panic and react in time, resulting in the inability to pull the zipper in the first place, and then there is a risk of being pulled into the transfer machine.

[0004] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the invention

[0005] In view of the above-mentioned defects, the present invention mainly provides a protective device for the feed port of a coal mining face transfer machine to solve the technical problem of personal injury accidents caused by operators mistakenly entering the feed port.

[0006] In order to solve the above problems, the present invention provides a feeding port protection device for a coal mining face transfer machine, comprising a support column, on which a sensor mounting plate and a switch mounting plate are fixed; an infrared receiving unit is fixed on the sensor mounting plate, and a pull rope switch is fixed on the switch mounting plate;

[0007] An emergency stop lever is rotatably provided on the support column, one end of the emergency stop lever is fixedly connected to the handle bar, and the other end is connected to the pull rope switch;

[0008] The infrared receiving unit and the pull-cord switch are both electrically connected to the transfer machine;

[0009] The infrared receiving unit is configured to: when a signal from a transmitter carried by a person is detected within its sensing range, send an alarm signal to the person or send a stop signal to the transfer machine;

[0010] The pull-rope switch is configured such that the emergency stop lever rotates when the handlebar is subjected to downward pressure, thereby pulling the pull-rope switch, so that the pull-rope switch sends a stop signal to the transfer machine.

[0011] According to the feeding port protection device of the coal mining face loader of the present invention, a reset elastic body is connected between the emergency stop rod and the switch mounting plate.

[0012] According to the coal mining face transfer machine feed port protection device of the present invention, the reset elastic body is an elastic rope or a tension spring.

[0013] According to the coal mining face transfer machine feed port protection device of the present invention, there are two sensor mounting plates, which are symmetrically fixed on both sides of the support column; and one infrared receiving unit is installed on each sensor mounting plate.

[0014] According to the feeding port protection device of the coal mining face transfer machine of the present invention, a plurality of anti-falling ropes are fixedly connected to the handle bar.

[0015] According to the coal mining face transfer machine feed port protection device of the present invention, a plurality of horizontal pull ropes are connected between two adjacent anti-fall ropes.

[0016] According to the feeding port protection device of the coal mining face transfer machine of the present invention, a plurality of anti-slip heads are fixedly arranged on the anti-fall rope; and a plurality of burrs are evenly distributed on the anti-slip heads.

[0017] According to the coal mining face transfer machine feed port protection device of the present invention, the anti-fall rope is replaced by an anti-fall chain.

[0018] According to the feed port protection device of the coal mining face transfer machine of the present invention, the support column is fixed on the trolley; rollers are provided on both sides of the trolley; a groove rail is provided on each side of the trolley; a track groove is provided on the groove rail, and the roller is rolled and embedded in the track groove; a stop beam is fixed between the two groove rails, and a reset spring is clamped between the trolley and the stop beam.

[0019] According to the feed port protection device of the coal mining face transfer machine of the present invention, the trolley is fixed to the guide rod; the guide rod slides through the stop beam, and the return spring is sleeved on the outside of the guide rod; one end of the guide rod passing through the stop beam is fixed to the anti-slip block.

[0020] In summary, the present invention forms a double insurance through the infrared receiving unit and the pull-cord switch, that is, it can sense within a certain range that the operator is close to the feed inlet and send a shutdown protection signal; at the same time, it can also stop the machine in time in an emergency when the operator falls into the feed inlet. The protection safety factor of the feed inlet position is significantly improved, and the risk of injury to the operator is greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0022] Figure 2 It is a structural schematic diagram of an embodiment of the present invention;

[0023] Figure 3 yes Figure 2 The structural diagram of the middle A direction;

[0024] Figure 4 yes Figure 3Schematic diagram of the structure of the middle C area;

[0025] Figure 5 yes Figure 2 Schematic diagram of the structure in the middle B direction;

[0026] In the figure: 1-support column, 11-emergency stop rod, 12-hanging buckle, 13-reset elastic body, 14-sensor mounting plate, 15-switch mounting plate, 16-pull rope switch; 2-handle bar, 21-anti-fall rope, 22-anti-slip head, 221-burr; 23-horizontal pull rope; 3-trolley, 31-roller, 32-groove rail, 33-reset spring, 34-guide rod, 35-anti-slip block, 36-stop beam; 100-feeding port. DETAILED DESCRIPTION

[0027] See also Figure 1 The present invention provides a feeding port protection device for a coal mining face transfer machine, comprising a support column 1, on which a sensor mounting plate 14 and a switch mounting plate 15 are fixed; an infrared receiving unit is fixed on the sensor mounting plate 14, and a pull rope switch 16 is fixed on the switch mounting plate 15;

[0028] An emergency stop lever 11 is rotatably provided on the support column 1, one end of the emergency stop lever 11 is fixedly connected to the handle bar 2, and the other end is connected to the pull rope switch 16;

[0029] The infrared receiving unit and the pull-cord switch 16 are both electrically connected to the transfer machine;

[0030] Combination Figure 5 The infrared receiving unit is configured to: when a signal emitted by a transmitter carried by a person is detected within its sensing range, it is determined that a person is approaching the feed inlet 100, and an alarm signal is sent to the person or a stop signal is sent to the transfer machine; thereby preventing the operator from being pulled into the feed inlet 100.

[0031] The pull-rope switch 16 is configured such that: the handle bar 2 is subjected to downward pressure to rotate the emergency stop lever 11, thereby activating the pull-rope switch 16 and sending a stop signal to the transfer machine;

[0032] When an operator enters the feed inlet 100 by mistake, he will pull the handle bar 2, thereby rotating the emergency stop bar 11 and activating the pull rope switch 16, thereby stopping the transfer machine to prevent the operator from being pulled into the feed inlet 100.

[0033] The infrared receiving unit and the pull-wire switch 16 form a double insurance, that is, when the operator approaches the feed inlet 100 within a certain range, a shutdown protection signal is issued; at the same time, the machine can be shut down in time in an emergency when the operator falls into the feed inlet 100, which significantly improves the safety factor.

[0034] The infrared receiving unit of the present invention can be implemented by using applicable known technologies, such as the related structures disclosed in Chinese patent CN111305904A or CN118794354A.

[0035] The transmitter can be built into the mining lamp or installed in the belt of the operator, and it moves with the operator and sends out signals in real time. When a person approaches the protective device of the present invention, the infrared receiving unit receives the signal and determines the distance to the person. When the distance is less than a predetermined value, such as 5 meters, an alarm signal is sent, and when the distance is smaller, a stop signal is sent to the transfer machine to ensure personal safety.

[0036] As a preferred solution, the emergency stop rod 11 is rotatably connected to the top of the support column 1, so that the handle bar 2 has a certain height so that the operator can grab it when an emergency occurs.

[0037] As a preferred solution, a reset elastic body 13 is connected between the emergency stop rod 11 and the switch mounting plate 15; the reset elastic body 13 generates a downward pulling force on the emergency stop rod 11 to prevent the pull rope switch 16 from being mistakenly started due to interference pressure on the handle bar 2, such as falling coal blocks.

[0038] Preferably, the resetting elastic body 13 is an elastic rope or a tension spring.

[0039] Furthermore, a hanging buckle 12 is fixedly provided on the emergency stop rod 11 , and the hanging buckle 12 is connected to a pull rope for starting a pull rope switch 16 .

[0040] See also Figure 2 As an embodiment, there are two sensor mounting plates 14, which are symmetrically fixed on both sides of the support column 1; each sensor mounting plate 14 is respectively installed with an infrared receiving unit; the range of sensing detection is expanded, and approaching operators can be detected on both sides of the protective device, thereby improving the protective effect.

[0041] See also Figure 3 As an embodiment, the handle bar 2 is fixed with a plurality of anti-falling ropes 21, which provide additional grip points for the operator when the operator falls into the feed port 100. When the operator cannot hold the handle bar 2, the operator can also hold the anti-falling rope 21 and activate the pull rope switch 16 to stop the transfer machine, thereby improving the safety factor.

[0042] As a preferred solution, a plurality of horizontal pull ropes 23 are connected between two adjacent anti-fall ropes 21 to increase the grasping points.

[0043] See also Figure 4 As an embodiment, a plurality of anti-slip heads 22 are fixed on the anti-fall rope 21 to increase the gripping resistance so that the operator can grasp the anti-fall rope 21;

[0044] Furthermore, a plurality of burrs 221 are evenly distributed on the anti-slip head 22; when the operator is unable to grasp the anti-fall rope 21 in time with his hands, the burrs 221 may pierce the operator's work clothes, thereby generating sufficient downward pulling force on the anti-fall rope 21 to stop the transfer machine.

[0045] The workers usually wear thick work clothes and handbags at the work site, so the burr 221 may pierce the work clothes or gloves.

[0046] Preferably, the diameter of the burr 221 does not exceed 1 mm, and the height does not exceed 0.5 mm. The burr 221 will not scratch the body of the operator. Those skilled in the art are aware of the safety protection principles of the work site. Compared with the serious injury caused by the operator being pulled into the feed port 100, even if the operator's skin is pierced or scratched, it is acceptable.

[0047] The anti-slip head 22 of the present invention is made of metal, and a through hole can be drilled in the anti-slip head 22, and the anti-fall rope 21 can pass through the through hole, so as to connect multiple anti-slip heads 22 in series. Optionally, the anti-fall rope 21 can be tied at the opening position of the through hole of the anti-slip head 22 to limit the anti-slip head 22 to prevent it from slipping.

[0048] As an embodiment, the anti-fall rope 21 is replaced by an anti-fall chain; the anti-slip head 22 can be welded on the anti-fall chain;

[0049] As an embodiment, a hanging buckle 12 for connecting the anti-falling rope 21 is fixedly arranged on the handle bar 2, so as to facilitate the connection and replacement of the anti-falling rope 21.

[0050] Combination Figure 5 As an embodiment, the support column 1 is fixed on the trolley 3; rollers 31 are provided on both sides of the trolley 3; a groove rail 32 is provided on both sides of the trolley 3; a track groove is provided on the groove rail 32, and the roller 31 rolls and is embedded in the track groove;

[0051] A stop beam 36 is fixedly connected between the two groove rails 32, and a return spring 33 is sandwiched between the trolley 3 and the stop beam 36;

[0052] When there is a large volume of coal at the feed port 100, the trolley 3 is touched and moved backward to avoid damaging the protective device. Afterwards, the return spring 33 returns the trolley 3 to its original position.

[0053] As a preferred solution, the trolley 3 is fixedly connected to the guide rod 34; the guide rod 34 is slidably connected to the stop beam 36, and the reset spring 33 is sleeved on the outside of the guide rod 34; an anti-slip block 35 is fixedly arranged at one end of the guide rod 34 that passes through the stop beam 36. When the trolley 3 is reset, the anti-slip block 35 and the stop beam 36 limit the forward travel of the trolley 3, so that it can return to its original position, and prevent the trolley 3 from excessively moving forward and entering the feed port 100.

[0054] In summary, the present invention provides a feed inlet protection device for a coal mining face transfer machine, which forms a double insurance through an infrared receiving unit and a pull rope switch, that is, it can sense within a certain range that an operator is close to the feed inlet and send a shutdown protection signal; at the same time, it can also stop the machine in time in an emergency when an operator falls into the feed inlet. The protection safety factor of the feed inlet position is significantly improved, and the risk of injury to operators is greatly reduced.

[0055] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art may make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A protective device for the feed port of a coal mining face transfer machine, characterized in that: It comprises a support column, on which a sensor mounting plate and a switch mounting plate are fixed; an infrared receiving unit is fixed on the sensor mounting plate, and a pull-rope switch is fixed on the switch mounting plate; An emergency stop lever is rotatably provided on the support column, one end of the emergency stop lever is fixedly connected to the handle bar, and the other end is connected to the pull rope switch; The infrared receiving unit and the pull-cord switch are both electrically connected to the transfer machine; The infrared receiving unit is configured to: when a signal from a transmitter carried by a person is detected within its sensing range, send an alarm signal to the person or send a stop signal to the transfer machine; The pull-rope switch is configured such that the emergency stop lever rotates when the handlebar is subjected to downward pressure, thereby pulling the pull-rope switch, so that the pull-rope switch sends a stop signal to the transfer machine.

2. The coal mining face transfer machine feed port protection device according to claim 1, characterized in that: A reset elastic body is connected between the emergency stop rod and the switch mounting plate.

3. The coal mining face transfer machine feed port protection device according to claim 2, characterized in that: The resetting elastic body is an elastic rope or a tension spring.

4. The coal mining face transfer machine feed port protection device according to claim 1, characterized in that: There are two sensor mounting plates, which are symmetrically fixed on both sides of the support column; and one infrared receiving unit is respectively installed on each sensor mounting plate.

5. The coal mining face transfer machine feed port protection device according to claim 1, characterized in that: A plurality of anti-falling ropes are fixedly connected to the handle bar.

6. The protection device for the feed port of the coal mining face transfer machine according to claim 5, characterized in that: A plurality of horizontal pull ropes are connected between two adjacent anti-fall ropes.

7. The coal mining face transfer machine feed port protection device according to claim 5, characterized in that: The anti-fall rope is fixed with a plurality of anti-slip heads; and a plurality of burrs are evenly distributed on the anti-slip heads.

8. The feeding port protection device for the coal mining face transfer machine according to claim 5, characterized in that: The anti-fall rope is replaced by an anti-fall chain.

9. The feeding port protection device for a coal mining face transfer machine according to any one of claims 1 to 8, characterized in that: The support column is fixed on the trolley; rollers are provided on both sides of the trolley; a groove rail is provided on each side of the trolley; a track groove is provided on the groove rail, and the roller is rolled and embedded in the track groove; a stop beam is fixed between the two groove rails, and a reset spring is clamped between the trolley and the stop beam.

10. The feeding port protection device for the coal mining face transfer machine according to claim 9, characterized in that: The trolley is fixedly connected to the guide rod; the guide rod is slidably connected to the stop beam, and the return spring is sleeved on the outside of the guide rod; one end of the guide rod passing through the stop beam is fixedly connected to an anti-slip block.

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