Coal feeder control system and coal feeder
By introducing a stop-stop control equipment in the coal feeder control system, detecting and controlling the stop of the coal bucket in the middle of the coal conveying belt, the coal leakage and coal spilling problems caused by the wrong position of the coal bucket when the coal feeder is shut down are solved, and automatic stop-stop control is realized, improving the operating efficiency and safety of the equipment.
Patent Information
- Application Number
- CN202510041149.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-10
- Publication Date
- 2025-05-02
AI Technical Summary
When the coal feeder is shut down, if the coal bucket is at the left/right terminal position of the coal conveyor belt, it is easy to cause the coal bucket to leak coal and spill coal, which will crush the coal conveyor belt and cannot start normally.
A coal feeder control system is designed, and the movement control module of the coal feeder is communicated through the stop control equipment. When the coal bucket moves to the middle position of the coal conveyor belt, a stop signal is sent to control the coal bucket to stop in the middle position.
It effectively avoids coal leakage and coal spilling problems caused by the wrong position of the coal bucket when the coal feeder is shut down, ensures that the coal conveyor belt is not crushed to death, realizes automatic stop control of the coal bucket, and improves the operating efficiency and safety of the equipment.
Smart Images
Figure CN119911633A_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the technical field of coal conveying equipment control, and in particular, to a coal feeder control system and a coal feeder. Background Art
[0002] At present, if the dual-link mobile coal feeder is in a stopped state and the two coal hoppers are at the left / right terminal position of the coal conveyor belt, coal will leak and spill from the coal hoppers, causing the coal conveyor belt under the coal hoppers to be crushed and the coal feeder cannot be started normally. Summary of the invention
[0003] The purpose of the present disclosure is to provide a coal feeder control system and coal feeding, which can control the coal bucket to stop at the middle position of the coal conveyor belt.
[0004] In order to achieve the above-mentioned object, in a first aspect, the present disclosure provides a coal feeder control system, comprising: a mid-stop control device, the mid-stop control device being communicatively connected to a mobile control module of the coal feeder; When the coal hopper of the coal feeder moves to the middle position of the coal conveyor belt, the mid-stop control device sends a stop signal to the mobile control module, so that the mobile control module controls the coal hopper to stop at the middle position of the coal conveyor belt according to the stop signal.
[0005] Optionally, the mid-stop control device comprises a position detector and a mid-stop control module, the position detector is communicatively connected to the mid-stop control module, and the mid-stop control module is communicatively connected to the movement control module of the coal feeder; When the coal hopper of the coal feeder moves to the middle position of the coal conveyor belt, the position detector generates a long pulse signal and sends it to the stop control module; The stop control module generates a short pulse signal according to the long pulse signal, and sends the short pulse signal to the movement control module, so that the movement control module controls the coal bucket to stop at the middle position of the coal conveyor belt according to the stop signal.
[0006] Optionally, the position detector includes a stroke detection baffle and a position detection probe, the stroke detection baffle is arranged at a middle position corresponding to the coal conveyor belt on the moving beam in the coal feeder, and the position detection probe is fixedly mounted on the stroke switch bracket of the coal feeder.
[0007] Optionally, when the coal hopper of the coal feeder moves to the middle position of the coal conveyor belt, the position detection probe is connected to the stroke detection baffle to generate a long pulse signal.
[0008] Optionally, the stroke detection baffle is L-shaped in the width direction of the coal feeder.
[0009] Optionally, the contact surface between the stroke detection baffle and the position detection probe includes a rectangle or a T-shape.
[0010] Optionally, the length of the contact surface on the stroke detection baffle and the position detection probe is greater than the inertial displacement of the coal hopper, wherein the length direction of the contact surface is the movement direction of the coal hopper, and the inertial displacement of the coal hopper is the sum of the distance the coal hopper moves to the left when the coal feeder stops operating and the distance it moves to the right when the coal feeder stops operating.
[0011] Optionally, the stop control module includes a detection switch, a pulse delay relay and an intermediate control relay, the intermediate control relay and the mobile control module are connected in series to form a first circuit, the detection switch and the pulse delay relay are connected in series to form a second circuit, and the first circuit and the second circuit are connected in parallel.
[0012] Optionally, the detection switch is turned on according to the long pulse signal to trigger the pulse delay relay; The pulse delay relay converts the long pulse signal into a short pulse signal; The intermediate control relay is turned on according to the short pulse signal, and sends a short pulse signal to the movement control module.
[0013] In a second aspect, the present disclosure provides a coal feeder, comprising the coal feeder control system described in the first aspect.
[0014] Through the above technical solution, a mid-stop control device is added and communicated with the mobile control module of the coal feeder. When the coal hopper moves to the middle position of the coal conveyor belt, the mid-stop control device sends a stop signal to the mobile control module. The mobile control module controls the coal hopper to stop at the middle position of the coal conveyor belt according to the stop signal, thereby avoiding the coal hopper from leaking and spilling coal when the coal hopper is at the left / right terminal position of the coal conveyor belt when the coal feeder is stopped.
[0015] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings: Figure 1 This is a schematic diagram of coal spilling and leaking from a coal feeder.
[0017] Figure 2 is a schematic diagram of a coal feeder control system according to an exemplary embodiment of the present disclosure.
[0018] Figure 3is a schematic diagram of a mid-stop control device according to an exemplary embodiment of the present disclosure.
[0019] Figure 4a 1 is an electrical schematic diagram of a mid-stop control according to an exemplary embodiment of the present disclosure.
[0020] Figure 4b The figure is an electrical schematic diagram of coal feeder movement control according to an exemplary embodiment of the present disclosure.
[0021] Figure 5 is a pulse triggering principle diagram of a stop control device according to an exemplary embodiment of the present disclosure.
[0022] Figure 6a and Figure 6b is a schematic diagram of installing a position detector according to an exemplary embodiment of the present disclosure.
[0023] Figure 7 It is a schematic diagram of a travel baffle structure according to an exemplary embodiment of the present disclosure.
[0024] Figure 8 The figure is a stop control logic ladder diagram of a coal feeder control system according to an exemplary embodiment of the present disclosure.
[0025] Fig. 9 FIG. 1 is a schematic diagram of a coal feeder stopping in accordance with an exemplary embodiment of the present disclosure. DETAILED DESCRIPTION
[0026] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.
[0027] It should be noted that all actions of acquiring signals, information or data in the present disclosure are carried out in compliance with the relevant data protection laws and policies of the country where the device is located and with the authorization given by the owner of the corresponding device.
[0028] As mentioned in the background technology, Figure 1 As shown in the figure, the double-linked mobile belt coal feeder is the main equipment of the coal conveying system, which is composed of two belt coal feeders connected by hinges. Its working principle is to evenly and continuously distribute the coal dumped by the dumper to the belt conveyor of the lower system after being buffered by it, so as to realize cross-position feeding, and the belt speed output is adjustable. When the coal conveying double-linked mobile belt coal feeder is stopped and in the left and right terminal positions, the dumper coal hopper will leak and spill coal, causing the coal conveying belt under the coal hopper to be crushed and unable to start normally.
[0029] At present, when the double-linked mobile belt coal feeder is in a shutdown state, in order to avoid the problems of coal spilling and leakage from the upper dumper coal hopper and compaction of the coal conveyor belt, it is generally necessary for the on-site operator to manually control the coal hopper of the coal feeder to move to the middle operating position of the coal conveyor belt to close the coal drop port of the dumper on the A and B sides, thereby avoiding coal leakage and spilling. However, due to the limitation of its system control function, it is impossible to realize remote control and local automatic control of the coal hopper of the coal feeder to move to the middle position.
[0030] In view of this, the present disclosure provides a coal feeder control system and a coal feeder, which can realize remote or on-site automatic control to stop the coal hopper at the middle position of the coal conveyor belt.
[0031] Figure 2 is a schematic diagram of a coal feeder control system according to an exemplary embodiment of the present disclosure. Figure 2 As shown, the coal feeder control system may include: a mid-stop control device 1, the mid-stop control device 1 is communicatively connected with a mobile control module 2 of the coal feeder; When the coal hopper of the coal feeder moves to the middle position of the coal conveyor belt, the mid-stop control device 1 sends a stop signal to the mobile control module 2, so that the mobile control module 2 controls the coal hopper to stop at the middle position of the coal conveyor belt according to the stop signal.
[0032] In the disclosed embodiment, a mid-stop control device is newly added, and is communicatively connected with the mobile control module of the coal feeder. When the coal hopper moves to the middle position of the coal conveyor belt, the mid-stop control device sends a stop signal to the mobile control module. The mobile control module controls the coal hopper to stop at the middle position of the coal conveyor belt according to the stop signal, thereby avoiding the coal hopper from leaking and spilling coal when the coal hopper is at the left / right terminal position of the coal conveyor belt when the coal feeder is stopped. The coal hopper of the coal feeder can be controlled by remote equation control or local automatic method to move to the middle position.
[0033] In order to facilitate those skilled in the art to better understand the coal feeder control system provided by the present disclosure, a detailed description is given below.
[0034] In a possible implementation, if Figure 3 As shown, the stop control device 1 includes a position detector 11 and a stop control module 12, the position detector 11 is communicatively connected with the stop control module 12, and the stop control module 12 is communicatively connected with the movement control module 2 of the coal feeder; When the coal hopper of the coal feeder moves to the middle position of the coal conveyor belt, the position detector 11 generates a long pulse signal and sends it to the stop control module 12; The stop control module 12 generates a short pulse signal according to the long pulse signal, and sends the short pulse signal to the mobile control module 2, so that the mobile control module 2 controls the coal bucket to stop at the middle position of the coal conveyor belt according to the stop signal.
[0035] It should be understood that the mid-stop control device 1 includes a position detector 11 in the hardware part and a mid-stop control module 12 in the software part; the position detector 11 is arranged on the coal feeder, and generates a long pulse signal when the coal hopper moves to the middle position of the coal conveyor belt; the mid-stop control module 12 is connected to the mobile control module 2, converts the long pulse signal sent by the position detector 11 into a short pulse signal, and sends it to the mobile control module 2, and the mobile control module 2 controls the coal hopper to stop at the middle position of the coal conveyor belt according to the short pulse signal.
[0036] In a possible implementation, if Figure 4a As shown, the stop control module 12 includes a detection switch S, a pulse delay relay ZT1 and an intermediate control relay ZT2. The intermediate control relay ZT2 is connected in series with the mobile control module KZ to form a first circuit. The detection switch S is connected in series with the pulse delay relay ZT1 to form a second circuit. The first circuit and the second circuit are connected in parallel.
[0037] Among them, the pulse delay relay is set to give a signal, the pulse delay relay automatically stops after the preset delay time is closed, and the trigger is invalid within the preset delay time. The preset delay time can be set to 2s.
[0038] It should be understood that if Figure 4b As shown in the figure, the electrical circuit for controlling the movement of the coal feeder includes multiple control circuits, including left limit, right limit, program control, local control, and motor overload. Figure 4a As shown, a detection switch S, a pulse delay relay ZT1 and an intermediate control relay ZT2 are added to the coal feeder mobile control electrical circuit, S is connected in series with ZT1, ZT2 is connected in series with KZ, and the two series circuits are connected in parallel. Because KZ includes a program-controlled stop circuit and a local stop circuit, the program-controlled stop circuit is connected to the interface 110, and the local stop circuit is connected to the interface 113, so that the stop signal generated by the intermediate stop control module is connected in parallel with the program-controlled stop command signal generated by the program-controlled stop circuit, and at the same time, the stop signal is connected in series with the local control stop command signal generated by the local stop circuit.
[0039] In the disclosed embodiment, based on the source electrical control principle of the coal feeder, a stop signal of the coal feeder is added, that is, when it is detected that the coal hopper runs to the middle position of the coal conveyor belt, a stop signal is sent to the movement control module, and the stop signal directly acts on the program-controlled stop command signal in the coal feeder movement control electrical circuit and is connected in parallel with it, and at the same time acts on the local control stop command signal in the coal feeder movement control electrical circuit and is connected in series with it, so as to realize remote control or local automatic control of the coal hopper of the coal feeder to move to the middle position, thereby realizing automatic stop control of the coal feeder.
[0040] It is worth noting that in order to ensure the reliability and accuracy of the stop signal, the signal cannot use a long command signal. The long command stop signal will affect the normal movement and operation of the equipment, and a short pulse trigger signal must be used. At the same time, due to the movement inertia of the coal feeder, in order to avoid the coal feeder stopping at the middle position and triggering the middle position signal twice during the reverse movement to the left / right position, resulting in the phenomenon of inching movement, it must be ensured that it is the only pulse trigger signal at the middle position of the coal feeder, that is, after the coal feeder moves to the middle position and triggers the stop, the stop signal must not be triggered twice during the reverse movement, thereby ensuring the accuracy of the stop signal and the normal operation of the coal feeder.
[0041] In a feasible implementation manner, the detection switch is turned on according to the long pulse signal to trigger the pulse delay relay; The pulse delay relay converts the long pulse signal into a short pulse signal; The intermediate control relay is turned on according to the short pulse signal, and sends a short pulse signal to the movement control module.
[0042] For example, Figure 5 As shown, when the coal feeder moves from left to right, a long pulse signal is generated in the position detector, and the pulse delay relay converts the long pulse signal into a single 2s pulse command signal, that is, when the coal hopper runs from left to right to the middle position of the coal conveyor belt, only one stop signal is triggered to avoid the inching stop phenomenon when the coal feeder moves from left to right and stops in the middle position of the coal conveyor belt; similarly, when the coal feeder moves from right to left, only one stop signal is triggered to avoid the inching stop phenomenon when the coal feeder moves from right to left and stops in the middle position of the coal conveyor belt.
[0043] In the embodiment of the present disclosure, a long pulse stop signal is converted into a short pulse stop signal through a pulse delay relay, that is, when the double coal feeder runs to the middle position, the stop signal is only triggered once to avoid the occurrence of a momentary stop phenomenon.
[0044] In a possible implementation, if Figure 6a and Figure 6bAs shown, the position detector 11 includes a travel detection baffle 111 and a position detection probe 112. The travel detection baffle 111 is arranged at the middle position of the corresponding coal conveyor belt on the moving beam 3 in the coal feeder, and the position detection probe 112 is fixedly mounted on the travel switch bracket 5 of the coal feeder.
[0045] For example, Figure 6a and Figure 6b As shown, a stroke detection baffle 111 is welded in the middle position of the moving beam 3 of the coal feeder, and the position detection probe 112 is fixed on the detection probe bracket 4, and the detection probe is fixed on the travel switch bracket 5. The installation position of the position detection probe 112 and the stroke detection baffle 111 can be adjusted according to the probe installation gap requirements to ensure the reliability of signal detection without affecting the detection operation of the original travel switch.
[0046] In a feasible implementation manner, when the coal hopper of the coal feeder moves to the middle position of the coal conveyor belt, the position detection probe 112 is connected to the stroke detection baffle 111 to generate a long pulse signal.
[0047] For example, the stroke detection baffle 111 is welded to the middle position of the moving beam 3 of the coal feeder, and the position detection probe 112 is fixed on the stroke switch bracket 5. When the coal hopper moves left / right to the middle position of the moving beam, the position detection probe 112 is connected to the stroke detection baffle 111, and the position detection probe 112 generates a long pulse signal.
[0048] In the disclosed embodiment, a stroke detection baffle and a position detection probe are added to the coal feeder through a simple installation method, which can generate a pulse signal in time when the coal hopper moves left / right to the middle position of the moving beam, so that the mid-stop control module can generate a stop signal to control the coal hopper to stop in the middle.
[0049] In a possible implementation, if Figure 6a As shown, the stroke detection baffle 111 is L-shaped in the width direction of the coal feeder.
[0050] It should be understood that the travel detection baffle in the present disclosure may also be set to other shapes, and the present disclosure is not limited to this.
[0051] In the embodiment of the present disclosure, the side surface of the stroke detection baffle is L-shaped, so that the detection baffle has better force-bearing performance and stability, thereby increasing the stability of the stroke detection baffle.
[0052] It is worth mentioning that due to the operating inertia of the coal feeder during operation, after the coal feeder stops according to the stop signal, a secondary stop signal may be triggered during the reverse left and right movement of the coal feeder, resulting in a secondary stop, causing the coal feeder to stop abnormally, that is, the movement inching phenomenon.
[0053] In a possible implementation, if Figure 7 As shown, the contact surface between the stroke detection baffle 111 and the position detection probe 112 includes a rectangle or a T-shape.
[0054] In the embodiment disclosed herein, the contact surface between the stroke detection baffle and the position detection probe can be made into a rectangular or T-shaped structure, so that the detector is always in a triggered state until the coal feeder runs from the left / right side to the middle position of the coal conveyor belt, thereby ensuring the uniqueness of the stop trigger signal and avoiding secondary triggering of the stop position detection signal during reverse movement.
[0055] In a possible implementation, if Figure 7 As shown, the length of the contact surface between the stroke detection baffle 111 and the position detection probe 112 is greater than the inertial displacement of the coal hopper, wherein the length direction of the contact surface is the moving direction of the coal hopper, and the inertial displacement of the coal hopper is the sum of the distance the coal hopper moves to the left when the coal feeder stops operating and the distance it moves to the right when the coal feeder stops operating.
[0056] It should be understood that the distance the coal hopper moves to the left when the coal feeder stops operating may be the distance the coal hopper moves to the left due to inertia when the coal feeder stops operating, and the distance the coal hopper moves to the right when the coal feeder stops operating may be the distance the coal hopper moves to the right due to inertia when the coal feeder stops operating.
[0057] For example, Figure 7 As shown, the stroke detection baffle is T-shaped. The distance b that the coal hopper moves to the left by inertia when the coal feeder stops operating is, and the distance a that the coal hopper moves to the right by inertia when the coal feeder stops operating is. The inertial displacement of the coal hopper can be obtained as d=a+b. The length L of the contact surface of the stroke detection baffle is greater than the inertial displacement d of the coal hopper.
[0058] In the disclosed embodiment, the influence of the inertial displacement of the coal feeder is fully taken into account, and the distance between the probe position when the coal feeder generates a long pulse signal to trigger the probe to the probe terminal position after the coal feeder stops is measured, that is, the inertial movement displacement, thereby determining the length of the stroke detection baffle in the coal feeder, and realizing that the coal feeder runs from the left and right sides to the middle position, and the stop proximity switch is always in the triggered state, to ensure the uniqueness of the stop trigger signal and avoid the secondary triggering of the stop position detection signal during the reverse movement.
[0059] In the embodiments of the present disclosure, Figure 8As shown in the figure, the PLC logic control of the coal feeder emergency stop / shutdown automatic return to the intermediate position may include: A. Coal feeder operating status: Left coal feeder (K1): can be operated at variable frequency or industrial frequency.
[0060] Right coal feeder (K2): It can also be operated by variable frequency or industrial frequency.
[0061] B. Emergency stop: Interlock emergency stop (ZT1): can stop all related equipment of the coal feeder in an emergency.
[0062] C. Coal feeder shutdown: When K3 is activated, both the left coal feeder (K1) and the right coal feeder (K2) will be shut down.
[0063] D. Interlocking control: Interlocking (K3): Coal feeder is put into interlocking control.
[0064] Interlock cut (K3): Coal feeder switches interlock control.
[0065] E. Manual movement control: Manual left shift (K5): controls the coal hopper to move left.
[0066] Manual right shift (K6): controls the coal hopper to move right.
[0067] F. Material Dropping Control: The coal hopper moves to the left and drops materials to the right: when the coal feeder moves to the left, materials will drop from the dropping chute of the coal hopper on the B side.
[0068] The coal hopper moves right and materials fall into the left position: when the coal feeder moves right, materials will fall into the material chute of the coal hopper on side A.
[0069] In summary, the shutdown status of the coal feeder can be judged by the variable frequency and industrial frequency operating status signals of the left and right coal conveyor belts; the position of the coal feeder can also be judged by the left and right drop level signals of the original double coal feeder; and in order to facilitate equipment maintenance and on-site debugging, an interlocking switch button is added to the coal feeder control system to facilitate the operating personnel to perform interlocking switching according to actual operating requirements.
[0070] like Fig. 9As shown, on the basis of the original control function of the coal feeder, without changing the original control function, the position of the coal bucket on the coal conveyor belt can be effectively and reliably detected through the mid-stop control equipment, the operating characteristics of the coal feeder are fully considered, and the detection and control method of the coal feeder running to the middle position is reasonably designed. On the basis of realizing the mid-stop control function of the coal feeder, the structure of the stroke detection baffle is optimized to avoid the secondary triggering of the mid-stop position detection signal when the coal feeder moves in the reverse direction, cancel the manual operation of the on-site personnel, improve the operating efficiency and safety of the equipment, improve the reliability and effectiveness of the control function of the coal feeder control system, effectively improve the automation level of the coal feeder control, and at the same time reduce the failure rate of the equipment and the labor intensity of the personnel.
[0071] Based on the same inventive concept, the present disclosure also provides a coal feeder, including the above-mentioned coal feeder control system.
[0072] In the disclosed embodiment, a mid-stop control device is newly added, and is communicatively connected with the mobile control module of the coal feeder. When the coal hopper moves to the middle position of the coal conveyor belt, the mid-stop control device sends a stop signal to the mobile control module. The mobile control module controls the coal hopper to stop at the middle position of the coal conveyor belt according to the stop signal, thereby avoiding the coal hopper from leaking and spilling coal when the coal hopper is at the left / right terminal position of the coal conveyor belt when the coal feeder is stopped. The coal hopper of the coal feeder can be controlled by remote equation control or local automatic method to move to the middle position.
[0073] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.
[0074] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.
[0075] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.
Claims
1. A coal feeder control system, characterized in that: include: A mid-stop control device, the mid-stop control device being communicatively connected to a mobile control module of the coal feeder; When the coal hopper of the coal feeder moves to the middle position of the coal conveyor belt, the mid-stop control device sends a stop signal to the mobile control module, so that the mobile control module controls the coal hopper to stop at the middle position of the coal conveyor belt according to the stop signal.
2. The coal feeder control system according to claim 1, characterized in that: The mid-stop control device comprises a position detector and a mid-stop control module, the position detector is communicatively connected with the mid-stop control module, and the mid-stop control module is communicatively connected with the movement control module of the coal feeder; When the coal hopper of the coal feeder moves to the middle position of the coal conveyor belt, the position detector generates a long pulse signal and sends it to the stop control module; The stop control module generates a short pulse signal according to the long pulse signal, and sends the short pulse signal to the movement control module, so that the movement control module controls the coal bucket to stop at the middle position of the coal conveyor belt according to the stop signal.
3. The coal feeder control system according to claim 2, characterized in that: The position detector includes a stroke detection baffle and a position detection probe. The stroke detection baffle is arranged at the middle position of the moving beam in the coal feeder corresponding to the coal conveyor belt, and the position detection probe is fixedly installed on the stroke switch bracket of the coal feeder.
4. The coal feeder control system according to claim 3, characterized in that: When the coal hopper of the coal feeder moves to the middle position of the coal conveyor belt, the position detection probe is connected to the stroke detection baffle to generate a long pulse signal.
5. The coal feeder control system according to claim 3, characterized in that: The stroke detection baffle is L-shaped in the width direction of the coal feeder.
6. The coal feeder control system according to claim 3, characterized in that: The contact surface between the stroke detection baffle and the position detection probe includes a rectangular shape or a T-shape.
7. The coal feeder control system according to claim 3, characterized in that: The length of the contact surface between the stroke detection baffle and the position detection probe is greater than the inertial displacement of the coal hopper, wherein the length direction of the contact surface is the moving direction of the coal hopper, and the inertial displacement of the coal hopper is the sum of the distance the coal hopper moves to the left when the coal feeder stops operating and the distance it moves to the right when the coal feeder stops operating.
8. The coal feeder control system according to any one of claims 2 to 7, characterized in that: The stop control module includes a detection switch, a pulse delay relay and an intermediate control relay. The intermediate control relay is connected in series with the mobile control module to form a first circuit. The detection switch is connected in series with the pulse delay relay to form a second circuit. The first circuit and the second circuit are connected in parallel.
9. The coal feeder control system according to claim 8, characterized in that: The detection switch is turned on according to the long pulse signal, triggering the pulse delay relay; The pulse delay relay converts the long pulse signal into a short pulse signal; The intermediate control relay is turned on according to the short pulse signal, and sends a short pulse signal to the movement control module.
10. A coal feeder, characterized in that: Comprising the coal feeder control system as described in any one of claims 1-9.