Automatic opening and closing system for well lid door of roadway lifting sealing disc

Abstract

The invention discloses an automatic opening and closing system for a well lid door of a roadway lifting sealing disc, and relates to the field of mine equipment. Comprising a winch which is connected to a well lid door through a twisted rope and controls opening and closing of the well lid door through forward and reverse rotation; the fixed pulley is arranged at the central position above the wellhead and is used for guiding the twisted rope; the controller is used for controlling start and stop of the winch; the control logic of the controller to the winch is automatic control, and the method comprises the following steps that in the bucket lowering process, the position sensor detects the position of the bucket from the well lid, when the distance between the bucket and the upper portion of the well lid reaches a threshold value L1, the controller controls the winch to work after delaying time t, and the well lid door is opened through a twisted rope; and when the distance of lowering the bucket below the well lid reaches a threshold value L2. According to the invention, the structures such as the controller, the position sensor, the winch and the like are utilized to match corresponding control logics, so that the automatic control of the well lid door can be realized, and meanwhile, a manual operation mode is reserved to facilitate emergency control.

Description

Technical Field

[0001] The invention relates to the field of mine equipment, and in particular to an automatic opening and closing system for a shaft and tunnel lifting sealing plate manhole cover door. Background Art

[0002] During the construction of shafts and tunnels, lifting and hanging are important links in safety management, and the sealing plate manhole cover door is the only way for the bucket to go up and down. In the traditional way, the opening and closing of the manhole cover door depends on the operation of the signalman. However, due to the unsafe behaviors of the signalman such as lack of concentration, short absence from work or fatigue and sleeping on the job, the manhole cover door is often not opened in time when the winch is going up, which leads to lifting and transportation accidents and falling objects accidents. Such accidents will not only cause damage to the equipment, but also pose a serious threat to personnel safety.

[0003] In order to solve this problem, there are some improvement measures, such as adding a moment switch on the manhole cover door to achieve manual operation, but this method still relies on the attention of the signalman.

[0004] To this end, the present invention proposes an automatic opening and closing system for a shaft and tunnel lifting sealing plate manhole cover door. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings in the prior art and to propose an automatic opening and closing system for a shaft and tunnel lifting sealing plate manhole cover door.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] An automatic opening and closing system for a shaft and lane lifting sealing plate manhole cover door, the manhole cover door is a double-opening type, comprising:

[0008] A winch, which is connected to the manhole cover door through a twisted rope and controls the opening and closing of the manhole cover door by forward and reverse rotation;

[0009] A fixed pulley, which is arranged at the center above the wellhead and is used to guide the twisted rope;

[0010] A controller, which is used to control the start and stop of the winch;

[0011] A position sensor is used to detect the position of the bucket from the manhole cover.

[0012] Preferably, the control logic of the controller for the winch is automatic control, including the following steps:

[0013] S1: When the bucket is lowered, the position sensor detects the position of the bucket from the manhole cover. When the distance between the bucket and the top of the manhole cover reaches the threshold value L1, the controller controls the winch to work after a delay time t, and opens the manhole cover door through the twisted rope; when the distance between the bucket and the bottom of the manhole cover reaches the threshold value L2, the controller controls the winch to work in the reverse direction after a delay time t, and the manhole cover door is closed;

[0014] S2: During the lifting process of the bucket, the position sensor detects the position of the bucket from the manhole cover. When the bucket rises to a distance below the manhole cover that reaches the threshold value L3, the controller controls the winch to work after a delay time t, and opens the manhole cover door through the twist rope. When the bucket rises above the manhole cover and reaches the threshold value L4, the controller controls the winch to work in the opposite direction after a delay time t, and the manhole cover door is closed.

[0015] Preferably, the controller controls the winch in a manual control logic, and the logic is:

[0016] S1: When the bucket is lowered, the position sensor detects the position of the bucket from the manhole cover and transmits it to the winch room. When the distance between the bucket and the top of the manhole cover reaches the threshold value L1, the winch room sends a command to the signal room, and the signal room starts the winch to open the manhole cover door through the twist rope; when the distance between the bucket and the bottom of the manhole cover reaches the threshold value L2, the winch room sends a command to the signal room, and the signal room starts the winch to close the manhole cover door through the twist rope;

[0017] S2: During the lifting process of the bucket, the position sensor detects the position of the bucket from the manhole cover and transmits it to the winch room. When the bucket rises to a distance below the manhole cover that reaches the threshold value L3, the winch room sends a command to the signal room, and the signal room personnel manually controls the winch to open the manhole cover door by the winch rope. When the bucket rises above the manhole cover and reaches the threshold value L4, the winch room sends a command to the signal room, and the signal room personnel manually controls the winch to work in the reverse direction, and the manhole cover door is closed.

[0018] Preferably: in the step S1, 2m<L1<2.5m.

[0019] Preferably: in the step S1, 15m<L2<16m.

[0020] Preferably: in the step S2, 16m<L3<17m.

[0021] Preferably: in the step S2, 2m<L4<2.5m.

[0022] Preferably: in the steps S1 and S2, t=10S.

[0023] The beneficial effects of the present invention are:

[0024] 1. The present invention utilizes structures such as a controller, a position sensor winch, etc. and matches corresponding control logic, thereby realizing automatic control of the manhole cover door, while retaining a manual operation mode for convenient emergency control. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The present invention provides a circuit diagram of an automatic opening and closing system for a shaft and tunnel lifting sealing plate manhole cover door. DETAILED DESCRIPTION

[0026] The technical solution of the present invention is further described in detail below in conjunction with specific implementation methods.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected or set, or detachably connected or set, or integrally connected or set. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] Embodiment 1:

[0029] An automatic opening and closing system for a well cover door with a shaft lifting sealing plate, wherein the well cover door is a double-opening type, and comprises:

[0030] A winch, which is connected to the manhole cover door through a twisted rope and controls the opening and closing of the manhole cover door by forward and reverse rotation;

[0031] A fixed pulley, which is arranged at the center above the wellhead and is used to guide the twisted rope;

[0032] A controller, which is used to control the start and stop of the winch;

[0033] A position sensor is used to detect the position of the bucket from the manhole cover.

[0034] The control logic of the controller for the winch is automatic control, including the following steps:

[0035] S1: When the bucket is lowered, the position sensor detects the position of the bucket from the manhole cover. When the distance between the bucket and the top of the manhole cover reaches the threshold value L1, the controller controls the winch to work after a delay time t, and opens the manhole cover door through the twisted rope; when the distance between the bucket and the bottom of the manhole cover reaches the threshold value L2, the controller controls the winch to work in the reverse direction after a delay time t, and the manhole cover door is closed;

[0036] S2: During the lifting process of the bucket, the position sensor detects the position of the bucket from the manhole cover. When the bucket rises to a distance below the manhole cover that reaches the threshold value L3, the controller controls the winch to work after a delay time t, and opens the manhole cover door through the twist rope. When the bucket rises above the manhole cover and reaches the threshold value L4, the controller controls the winch to work in the opposite direction after a delay time t, and the manhole cover door is closed.

[0037] The PLC output module Q0.0 is activated, the (door opening relay) KA1 coil is energized, and the current passes through the (door opening relay) KA1 contact to the (door opening contactor) KM1 coil, so that the KM1 coil is energized, the normally open contact forms a self-locking, and the (door opening contactor) KM1 main contact is closed. At this time, the motor starts to rotate forward to open the door, and the limit switch opens to the position contact, so that the door opening contactor KM1 coil is de-energized, and the motor automatically stops rotating. At the same time, the opening position signal is fed into the PLC input module I0.5, and the touch screen shows that the manhole cover door is fully opened.

[0038] When the pressure exceeds the threshold, after a delay of 10S, the PLC output module Q0.1 acts, the (door closing relay) KA2 coil is energized, and the current passes through the (door closing relay) KA2 contact to the (door closing contactor) KM2 coil, so that the (door closing contactor) KM2 coil is energized, the normally open contact forms a self-locking, and the (door closing contactor) KM2 main contact is closed. At this time, the motor starts to rotate in the opposite direction to close the door, and the limit switch closes the contact, so that the (door closing contactor) KM2 coil is de-energized, and the motor automatically stops rotating. At the same time, the closed position signal is fed into the PLC input module I0.6, and the touch screen shows that the manhole cover door is closed.

[0039] Embodiment 2:

[0040] An automatic opening and closing system for a well cover door with a shaft lifting sealing plate, wherein the well cover door is a double-opening type, and comprises:

[0041] A winch, which is connected to the manhole cover door through a twisted rope and controls the opening and closing of the manhole cover door by forward and reverse rotation;

[0042] A fixed pulley, which is arranged at the center above the wellhead and is used to guide the twisted rope;

[0043] A controller, which is used to control the start and stop of the winch;

[0044] A position sensor is used to detect the position of the bucket from the manhole cover.

[0045] The controller controls the winch manually, and its logic is:

[0046] S1: When the bucket is lowered, the position sensor detects the position of the bucket from the manhole cover and transmits it to the winch room. When the distance between the bucket and the top of the manhole cover reaches the threshold value L1, the winch room sends a command to the signal room, and the signal room starts the winch to open the manhole cover door through the twist rope; when the distance between the bucket and the bottom of the manhole cover reaches the threshold value L2, the winch room sends a command to the signal room, and the signal room starts the winch to close the manhole cover door through the twist rope;

[0047] S2: During the lifting process of the bucket, the position sensor detects the position of the bucket from the manhole cover and transmits it to the winch room. When the bucket rises to a distance below the manhole cover that reaches the threshold value L3, the winch room sends a command to the signal room, and the signal room personnel manually controls the winch to open the manhole cover door by the winch rope. When the bucket rises above the manhole cover and reaches the threshold value L4, the winch room sends a command to the signal room, and the signal room personnel manually controls the winch to work in the reverse direction, and the manhole cover door is closed.

[0048] In manual mode, after receiving the command from the winch room, the signal room turns the switch of the operating box to the manual position, closes the power switch, and when the door opening button SB2 is pressed, the current passes through the normally closed auxiliary interlocking contact of (door closing contactor) KM2 to the (door opening contactor) KM1 coil, energizing the KM1 coil, and the normally open contact forms a self-locking, and the main contact of (door opening contactor) KM1 is closed. At this time, the motor starts to rotate forward to open the door. When the door is fully opened, press the stop button SB1, the (door opening contactor) KM1 coil is de-energized, and the motor stops rotating. If the stop is not timely, the manhole cover door limit switch is opened to the full position, the (door opening contactor) KM1 coil is de-energized, and the motor stops rotating. The principle of manual door closing is the same as that of door opening.

[0049] Embodiment 3:

[0050] A shaft and tunnel lifting sealing plate manhole cover door automatic opening and closing system, this embodiment makes the following improvements on the basis of embodiment 1 or embodiment 2:

[0051] In the step S1, L1=2.5m.

[0052] In the step S1, L2=16m.

[0053] In the step S2, L3=17m.

[0054] In the step S2, L4=2.5m.

[0055] In the steps S1 and S2, t=10S.

[0056] Embodiment 4:

[0057] A shaft and tunnel lifting sealing plate manhole cover door automatic opening and closing system, this embodiment makes the following improvements on the basis of embodiment 1 or embodiment 2:

[0058] In the step S1, L1=2.25m.

[0059] In the step S1, L2=15.5m.

[0060] In the step S2, L3=16.57m.

[0061] In the step S2, L4=2.25m.

[0062] In the steps S1 and S2, t=10S.

[0063] Embodiment 5:

[0064] A shaft and tunnel lifting sealing plate manhole cover door automatic opening and closing system, this embodiment makes the following improvements on the basis of embodiment 1 or embodiment 2:

[0065] In the step S1, L1=2.5m.

[0066] In the step S1, L2=16m.

[0067] In the step S2, L3=17m.

[0068] In the step S2, L4=2.5m.

[0069] In the steps S1 and S2, t=10S.

[0070] The present invention can realize automatic control of the manhole cover door by utilizing structures such as a controller, a position sensor winch, etc. and matching corresponding control logic, while retaining a manual operation mode for convenient emergency control.

[0071] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automatic opening and closing system for a well and lane lifting sealing plate manhole cover door, the manhole cover door is a double-opening type, characterized in that: include: A winch, which is connected to the manhole cover door through a twisted rope and controls the opening and closing of the manhole cover door by forward and reverse rotation; A fixed pulley, which is arranged at the center above the wellhead and is used to guide the twisted rope; A controller, which is used to control the start and stop of the winch; A position sensor is used to detect the position of the bucket from the manhole cover.

2. The automatic opening and closing system for the manhole cover door of a shaft and lane lifting sealing plate according to claim 1 is characterized in that: The control logic of the controller for the winch is automatic control, including the following steps: S1: When the bucket is lowered, the position sensor detects the position of the bucket from the manhole cover. When the distance between the bucket and the top of the manhole cover reaches the threshold value L1, the controller controls the winch to work after a delay time t, and opens the manhole cover door through the twisted rope; when the distance between the bucket and the bottom of the manhole cover reaches the threshold value L2, the controller controls the winch to work in the reverse direction after a delay time t, and the manhole cover door is closed; S2: During the lifting process of the bucket, the position sensor detects the position of the bucket from the manhole cover. When the bucket rises to a distance below the manhole cover that reaches the threshold value L3, the controller controls the winch to work after a delay time t, and opens the manhole cover door through the twist rope. When the bucket rises above the manhole cover and reaches the threshold value L4, the controller controls the winch to work in the opposite direction after a delay time t, and the manhole cover door is closed.

3. The automatic opening and closing system for the manhole cover door of a shaft and tunnel lifting sealing plate according to claim 1 is characterized in that: The controller controls the winch manually, and its logic is: S1: When the bucket is lowered, the position sensor detects the position of the bucket from the manhole cover and transmits it to the winch room. When the distance between the bucket and the top of the manhole cover reaches the threshold value L1, the winch room sends a command to the signal room, and the signal room starts the winch to open the manhole cover door through the twist rope; when the distance between the bucket and the bottom of the manhole cover reaches the threshold value L2, the winch room sends a command to the signal room, and the signal room starts the winch to close the manhole cover door through the twist rope; S2: During the lifting process of the bucket, the position sensor detects the position of the bucket from the manhole cover and transmits it to the winch room. When the bucket rises to a distance below the manhole cover that reaches the threshold value L3, the winch room sends a command to the signal room, and the signal room personnel manually controls the winch to open the manhole cover door by the winch rope. When the bucket rises above the manhole cover and reaches the threshold value L4, the winch room sends a command to the signal room, and the signal room personnel manually controls the winch to work in the reverse direction, and the manhole cover door is closed.

4. The automatic opening and closing system for the manhole cover door of a shaft lifting sealing plate according to claim 2 or 3 is characterized in that: In the step S1, 2m<L1<2.5m.

5. The automatic opening and closing system for the manhole cover door of a shaft and lane lifting sealing plate according to claim 2 or 3 is characterized in that: In the step S1, 15m<L2<16m.

6. The automatic opening and closing system for the manhole cover door of a shaft and lane lifting sealing plate according to claim 2 or 3 is characterized in that: In the step S2, 16m<L3<17m.

7. The automatic opening and closing system for the manhole cover door of a shaft and tunnel lifting sealing plate according to claim 2 or 3 is characterized in that: In the step S2, 2m<L4<2.5m.

8. The automatic opening and closing system for the manhole cover door of a shaft and tunnel lifting sealing plate according to claim 2 or 3 is characterized in that: In the steps S1 and S2, t=10S.

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