CN111204359A

CN111204359A - Linkage protection device for hoister and car stopping fence

Info

Publication number: CN111204359A
Application number: CN202010252370.XA
Authority: CN
Inventors: 陈肇荣; 孙若璟; 陈肇鹏
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-22
Filing date: 2020-04-01
Publication date: 2020-05-29
Also published as: CN110341746A

Abstract

The invention discloses a linkage protection device for a hoister and a car stopping fence, belonging to a protection device for an inclined roadway hoisting system. The invention has the advantages of monitoring the opening and closing state of the car stopping fence in the inclined roadway in real time and strictly controlling the starting of the elevator according to the opening and closing state of the car stopping fence. When the car stopping fence is in a closed state, the signal monitoring assembly sends a signal, and the control box allows the elevator to be started normally; when the car stopping fence is in an open state, the monitoring assembly sends a signal, the control box prohibits the normal starting of the elevator, only an operator confirms on site, and determines that the transport vehicle passes through the control box and the car stopping fence needs to be normally opened, and at the moment, an elevator driver can start the elevator in a safe starting mode through the control box to carry out transport operation. The phenomenon that safety accidents frequently occur due to the fact that the switch of the car stopping fence is judged and operated manually when the existing inclined roadway transportation lifting operation is carried out, once a hitter and a lifter driver are communicated, a slight error occurs or the responsibility of any party is not in place is avoided. The opening and closing of the car stopping fence body and the starting of the hoister are controlled in an interlocking manner, and the car stopping fence has the characteristics of safety and reliability.

Description

Linkage protection device for hoister and car stopping fence

Technical Field

The invention relates to a mine inclined roadway transportation protection device, and belongs to the field of safety devices.

Background

At present, the car stopping device and the elevator operation used in the mine inclined drift are both manually judged operations, a hitter is required to operate the opening and closing of the car stopping fence, and then the elevator driver is informed to operate the elevator according to the conditions. The noise is large and the light is not good at the operation site. If the car stopping fence is not opened timely, is not completely opened or forgets to close the car stopping fence against regulations by a hitcher, equipment damage accidents and car running accidents are easily caused. At present, there is no good solution.

Disclosure of Invention

The technical task of the invention is to provide a linkage protection device for a hoisting machine and a car stopping fence in an inclined roadway transportation system aiming at the defects in the prior art, the inclined roadway transportation protection device reduces the dependence on manpower, can control and authorize the starting of the hoisting machine by monitoring the opening and closing of a car stopping fence body in real time, replaces the working mode of completely depending on manual on-site observation and judgment, and has the advantages of accuracy, practicability, reliability and the like.

The technical scheme adopted by the invention for solving the technical problems is as follows: the whole system comprises a signal monitoring sensing assembly and a control box.

The monitoring induction assembly comprises an installation base, a u-shaped fixing bolt, an induction switch, a switch bracket, a reflective sheet, a protective cover and the like, wherein the induction switch is responsible for acquiring a real-time state signal of the opening and closing of the car stopping fence and sending the acquired signal to the control box 2 in time.

The inside power module, mode pilot lamp, PLC and ac contactor constitute by control box 2, and power module is responsible for supplying power for PLC, and the signal that induction system sent and safe start mode button provided are responsible for receiving to the PLC input, and handle, send instruction control contactor break-make. Two alternating current contactors, one with a delay setting and one without, wherein two contactor coils are connected with two groups of output ends of the PLC, input and output main contacts of the contactors are connected in series in a loop circuit of a starting button of the elevator, the contactors are not attracted, the starting button circuit of the elevator is in an open circuit state, and the starting button of the elevator fails; any contactor is attracted to attract the starting button circuit of the elevator to be closed immediately, and the starting button of the elevator recovers the function, so that the elevator can be started smoothly.

The monitoring induction component arranged on the car stopping fence is responsible for monitoring the opening and closing state of the inclined roadway car stopping fence in real time and transmitting signals to the control box arranged on the side of the elevator in time, and the control box judges the opening and closing state signals of the car stopping fence according to the received opening and closing state signals and then strictly controls the starting authorization of the elevator. When the car stopping fence is in a closed state, the monitoring induction component sends a signal, the control box is in a conventional mode, the conventional mode indicator lamp emits light, and the alternating current contactor without time delay set inside is attracted to allow the elevator to be started normally; when the car stopping fence is in an open state, the monitoring sensing assembly sends a signal, the control box is converted into a safety protection mode, the safety protection mode indicator lamp emits light, two alternating current contactors in the control box are not attracted, the elevator cannot be started, only an operator confirms on site, it is determined that a normal transport vehicle passes through, when the car stopping fence is required to be opened, an elevator driver can attract the alternating current contactors with delay setting in the control box through operating a safety starting mode starting button on the control box, the elevator is normally started, and normal transport operation is guaranteed. After the vehicle passes through, the vehicle stopping fence is closed, and the control box sends an instruction to enable the elevator to enter a conventional starting mode.

Compared with the prior art, the inclined drift elevator and the car stopping fence linkage protection device have the following outstanding beneficial effects: the opening and closing state of the car stopping fence is not judged by manpower completely during inclined roadway transportation and lifting operation, a lifter driver can accurately acquire the opening and closing state of the car stopping fence in time without hooking workers, manual operation is replaced, the labor intensity of workers is reduced, and the use is convenient. The opening and closing of the car stopping fence body and the starting of the hoister are controlled in an interlocking manner, and the car stopping fence has the characteristics of safety and reliability. The inclined drift car-sliding accident is well avoided.

Drawings

FIG. 1 is a schematic structural view of a linkage protection device for an inclined drift elevator and a car stopper

FIG. 2 is a schematic view of the installation of the monitoring sensing assembly

Fig. 3 is a block diagram of a monitoring sensing assembly.

Description of reference numerals: 1. the device comprises a hoisting machine, 2, a control box, 3, a roadway roof, 4, a car stopping fence, 5, a monitoring induction component, 6, a mine car, 7, a roadway bottom plate, 8, a steel wire rope, 9, a cable, 10, a car stopping fence upright post, 11, a monitoring induction component base, 12, a u-shaped bolt, 13, a u-shaped bolt fixing nut, 14, a u-shaped bolt washer, 15, an induction switch bracket, 16, an induction switch bracket adjusting bolt, 17, an induction switch bracket fixing nut, 18, an induction switch fixing nut, 19, an induction switch limiting nut, 20, a photoelectric feedback induction switch, 21, a car stopping fence cross beam, 22, an induction switch reflection sheet, 23, a car stopping fence inclined strut, 24, a car stopping fence rotating shaft, 25, a car stopping fence upright beam, 26 and a protective cover.

Detailed Description

The inclined roadway elevator and the guard bar linkage protection device of the invention are explained in detail below with reference to the attached

drawings

1, 2 and 3 of the specification.

The automatic car stopping fence for the inclined roadway structurally comprises a signal monitoring induction component 5, a control box 2 and a cable 9. The signal monitoring sensing assembly 5 is arranged on the car stopping fence 4, the control box 2 is arranged on the side edge of the elevator 1, and the signal monitoring sensing assembly and the control box are connected through a cable 9 arranged on the roadway top 3 to carry out communication.

Monitoring response subassembly 5 comprises installation base 11, u type fixing bolt 12, photoelectric feedback inductive switch 20, inductive switch support 15, reflector panel 22, safety cover 26 etc. and inductive switch is responsible for acquireing the real-time open and close state signal of fender rail to in time send the signal of acquireing for control box 2.

The mounting base 11 is mounted on the upright post 10 of the car-stopping fence by using a u-shaped fixing bolt 12 and a fixing nut 13, and the height can be adjusted.

The inductive switch bracket 15 is installed on the monitoring inductive component installation base 11 by an adjusting bolt 16 and a fixing nut 17, and the left and right stroke distance can be adjusted.

The photoelectric mirror feedback inductive switch 20 is divided into an upper part and a lower part, which are both installed on the inductive switch bracket 15 by a limit nut 19 and a fixing nut 18, the reflector 22 is fixed on the cross beam 21 of the car stopping fence by self-tapping screws or nail-free glue, and the specific position is the position right opposite to the inductive switch head when the cross beam 21 of the car stopping fence is completely closed.

The upper and lower photoelectric mirror feedback inductive switches 20 work independently, are responsible for monitoring the real-time opening and closing states of the car stopping fence 4 and sending real-time signals to the control box 2, and when one of the two switches fails, the other switch does not work normally.

The inside power module, mode pilot lamp, PLC and ac contactor constitute by control box 2, and power module is responsible for supplying power for PLC, and the signal that induction system sent and safe start mode button provided are responsible for receiving to the PLC input, and handle, control contactor break-make. Two alternating current contactors, one with a delay setting and one without, wherein two contactor coils are connected with two groups of output ends of the PLC, input and output main contacts of the contactors are connected in series in a loop circuit of a starting button of the elevator, the contactors are not attracted, the starting button circuit of the elevator is in an open circuit state, and the starting button of the elevator fails; any contactor is attracted to attract the starting button circuit of the elevator to be closed immediately, and the starting button of the elevator recovers the function, so that the elevator can be started smoothly.

When the photoelectric feedback inductive switch 20 is normally closed on the stop fence 4, the control box is in a conventional mode, the conventional mode indicator lamp emits light, the reflector 22 faces the inductive switch, the inductive switch 20 is kept in a conventional state and sends a corresponding signal to the control box 2, the PLC in the control box 2 makes a judgment and sends an instruction according to a received signal, the AC contactor without time delay setting is used for attracting, the elevator starting button circuit is closed, the elevator can be normally started, and the mine car 6 carries out transportation operation.

When the car stopping fence 4 is opened or not closed by a hitter, the reflecting piece 22 of the induction switch in the signal monitoring induction assembly 5 is separated from the induction area of the induction switch 20, the induction switch 20 is triggered to act to enter a working state, and a signal is synchronously sent to the control box 2, the PLC in the control box 2 judges according to the received signal and enters a safety protection mode, the safety protection mode indicator lamp emits light, an instruction is sent to enable the alternating current contactor without time delay setting to be disconnected from an attraction state, at the moment, two alternating current contactors are not attracted, the elevator 1 cannot be normally started, the car running accident is effectively prevented, and therefore the safety of transportation operation is guaranteed; only the operating personnel confirms that the mine car 6 needs to be normally transported, and belongs to reasonable requirements, a driver of the elevator presses a safe starting mode button, the PLC in the control box 2 sends an instruction to pull in the AC contactor with the time delay setting, the elevator can be normally started, the mine car 6 carries out transportation operation, and the AC contactor is automatically disconnected after the set time.

After the mine car 6 passes through the car stopping rail 4, the car stopping rail 4 is completely closed, the reflecting sheet 22 enters the sensing area of the inductive switch 20, the inductive switch 20 is recovered to the conventional state, and the whole system automatically enters the conventional mode. The opening and closing of the car stopping fence body and the starting interlocking control of the hoister are not needed, and the safety and the high efficiency of mine transportation operation are ensured.

While there have been shown and described what are at present considered to be the fundamental principles of the invention and its essential features and advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other forms of practicing the invention without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art will be able to make the description as a whole, and the embodiments may be combined to form other embodiments as will be apparent to those skilled in the art.

Claims

1. Lifting machine, fender guardrail linkage protection device, characterized by: the structure comprises a signal induction monitoring component and a control box; the signal induction monitoring assembly is responsible for monitoring the opening and closing state of the inclined roadway car stopping fence in real time, and the control box controls and authorizes the starting of the elevator according to the opening and closing state of the car stopping fence; the opening and closing of the car stopping fence and the starting of the hoister are interlocked, so that automatic protection is realized; when the car stopping fence is in a closed state, the hoister can be started normally; when the car stopping fence is in an open state, the hoister cannot be started normally, only the operator determines that the transport vehicle passes through the hoister, the car stopping fence is required to be started normally, and the hoister can be started safely through the control box to conduct hoisting operation.

2. The signal sensing probe assembly of claim 1, wherein: the device is arranged on the vehicle stopping fence, is in charge of monitoring the opening and closing state of the vehicle stopping fence in real time and sends signals to the control box (2) in time.

3. The signal sensing monitoring assembly of claim 2, wherein: the automobile stop fence is composed of an installation base (11), a u-shaped fixing bolt (12), an induction switch (20), a switch support (15), a reflective sheet (22), a protective cover (26) and the like, wherein the u-shaped fixing bolt (12) and a nut (13) are installed on the stop fence (4), the height of the U-shaped fixing bolt can be adjusted, and the U-shaped fixing bolt is communicated with a control box (2) through a cable (9).

4. The inductive switch (20) of claim 3, further comprising: the device is responsible for acquiring real-time opening and closing state signals of the car stopping fence, and timely sending the acquired signals to the control box (2), and the left and right travel of the installation position can be adjusted.

5. The inductive switch (20) of claim 4, further comprising: there may be both a contact type and a non-contact type.

6. The contact type inductive switch (20) of claim 5, further comprising: a travel limit switch is used and is abutted against a cross beam (21) of the vehicle stop fence; the non-contact inductive switch is characterized in that: a certain distance is reserved between the photoelectric mirror feedback inductive switch, the photoelectric diffuse reflection inductive switch and the magnetic induction switch and the car stop rail cross beam (21).

7. A control box (2) according to claim 1, characterized in that: install by the lifting machine operation panel, be responsible for receiving the signal that response detection subassembly sent, carry out analysis processes, authorize the lifting machine start-up, have safe start mode button.

8. A control box (2) according to claim 1, characterized in that: the power supply module is responsible for supplying power to the PLC, and the PLC is responsible for receiving signals sent by the inductive switch (20) and the safe starting mode starting button, processing the signals and sending instructions to control the on-off of the contactor; the number of the alternating current contactors is two, one of the alternating current contactors has a delay setting, the other one of the alternating current contactors does not have the delay setting, a contactor coil is connected with two groups of output ends of the PLC, input and output main contacts of the contactor are connected in series in a loop circuit of a starting button of the elevator, the contactor is not attracted, the starting button circuit of the elevator is in an open circuit state, and the starting button of the elevator fails; any contactor is attracted to attract the starting button circuit of the elevator to be closed immediately, and the starting button of the elevator recovers the function, so that the elevator can be started smoothly.

9. Control box (2) according to claim 8, characterized in that: the elevator has two operation modes, namely a mode indicator light, when the stop fence is in a closed state and is in a conventional mode, the conventional mode indicator light emits light, an alternating current contactor without time delay setting is attracted, and the elevator can be started normally to work; when the vehicle stopping fence is in an open state, the two alternating current contactors are not attracted, the safety protection mode is started, the safety protection mode indicator lamp emits light, the elevator cannot be started to work, and the vehicle running accident is avoided; if the car stopping fence is opened, the transportation vehicle passes through the car stopping fence, the car stopping fence belongs to reasonable requirements, the elevator is started to meet working requirements, a safe starting mode can be adopted at the moment, the alternating current contactor with the delay setting is closed, the elevator is started to carry out transportation operation, and after the vehicle passes through the car stopping fence, the car stopping fence is closed, and the car automatically enters a conventional mode.

10. The secure boot method of claim 9, wherein an effective duration is set, and when the effective duration reaches, the secure boot method fails, and the secure boot method must be restarted for reuse; the unsafe behavior that the elevator can still run when the car stopping fence is not closed for a long time after the safe starting mode is started is avoided.