Belt safety protection system with fault positioning function

Abstract

The utility model discloses a belt safety protection system with a fault positioning function, which comprises a chute blanking plug, a slip detector, a longitudinal tear detector, a deviation switch, a pull rope switch, a comprehensive protection device, a belt conveyor PLC (Programmable Logic Controller) main station and an upper computer, the slip detector is electrically connected with the slip detection input end of the comprehensive protection device through a cable, and each protection switch element has a unique code in a system, so that when the protection switch element acts, the comprehensive protection device can automatically position a fault switch and give an alarm on site, and meanwhile, alarm information is sent to a PLC main station; therefore, the specific position of the fault switch can be determined, the detection and maintenance efficiency can be greatly improved, the dustproof effect is good, and the cable is firmly fixed.

Description

Technical field:

[0001] The utility model relates to the field of coal conveying belt safety, in particular to a belt safety protection system with a fault positioning function. Background technology:

[0002] In industrial production, belt conveyors are widely used as solid material conveying devices. When belt conveyors are running, they rely on the linkage of multiple components such as the frame, conveyor belt, belt roller, tensioning device, and transmission device.

[0003] Most of them are equipped with chute blockers, slip detectors, longitudinal tear detectors, multiple deviation switches and multiple pull-rope switches. Due to the large number of switch components on site, the alarm information of similar switches cannot be fully transmitted to the PLC system. It can only be done by connecting the alarm output points of each switch in parallel to finally form an alarm signal and send it to the PLC system. Then, when a certain switch is actuated, although the host computer can report a certain type of fault, it cannot locate the specific position of the actuated switch.

[0004] In actual production, since each protection device uses a single hard wiring method to achieve the corresponding protection interlock, once a protection device fails, it cannot be eliminated in time and needs to be manually inspected, which is prone to omissions and time-consuming, greatly increasing the risk of personal injury and equipment damage. Utility model content:

[0005] The utility model aims to provide a belt safety protection system with a fault locating function.

[0006] The utility model is implemented by the following technical solutions:

[0007] A belt safety protection system with a fault positioning function comprises a chute blocker, a slip detector, a longitudinal tear detector, a deviation switch, a pull rope switch, an integrated protection device, a belt conveyor PLC master station and a host computer, the chute blocker is electrically connected to the chute detection input terminal of the integrated protection device through a cable, the slip detector is electrically connected to the slip detection input terminal of the integrated protection device through a cable, the longitudinal tear detector is electrically connected to the longitudinal tear detection input terminal of the integrated protection device through a cable, the deviation switch is electrically connected to the deviation detection input terminal of the integrated protection device through a cable, the pull rope switch is electrically connected to the pull rope detection input terminal of the integrated protection device through a cable, the output terminal of the integrated protection device is electrically connected to the input terminal of the belt conveyor PLC master station through a cable, and the output terminal of the belt conveyor PLC master station is electrically connected to the input terminal of the host computer through a cable.

[0008] Preferably, a plurality of slidingly connected first fixing members are inserted into the shell of the comprehensive protection device, a first sealing ring is fixedly embedded in the first fixing member, a second fixing member is externally threadedly connected to the first fixing member, and a second sealing ring is fixedly installed at one end of the second fixing member.

[0009] Advantages of the utility model: the modified belt conveyor safety protection system is composed of a protection element with an address encoder, an integrated protection device, a PLC master station, a host computer, etc. Since each protection switch element has a unique code in the system, when it is activated, the integrated protection device will automatically locate the faulty switch and alarm on the spot, and at the same time send an alarm information to the PLC master station, and then transmit it to the host computer via the network to alarm. In this way, the specific location of the faulty switch can be clearly identified, which can greatly improve the inspection and maintenance efficiency. At the same time, it has a good dustproof effect and the cables are firmly fixed. Description of the drawings:

[0010] Figure 1 It is a system flow chart of the structure of the utility model;

[0011] Figure 2 It is a structural diagram of the housing of the comprehensive protection device in the structure of the utility model.

[0012] In the figure: chute blocker 1, slip detector 2, longitudinal tear detector 3, deviation switch 4, pull rope switch 5, comprehensive protection device 6, belt conveyor PLC master station 7, host computer 8, first fixing part 9, first sealing ring 10, second fixing part 11, second sealing ring 12. Specific implementation method:

[0013] like Figure 1 to Figure 2As shown, a belt safety protection system with a fault positioning function includes a chute blocker 1, a slip detector 2, a longitudinal tear detector 3, a deviation switch 4, a pull rope switch 5, an integrated protection device 6, a belt conveyor PLC master station 7 and a host computer 8. The chute blocker 1 is electrically connected to the chute detection input end of the integrated protection device 6 through a cable, the slip detector 2 is electrically connected to the slip detection input end of the integrated protection device 6 through a cable, the longitudinal tear detector 3 is electrically connected to the longitudinal tear detection input end of the integrated protection device 6 through a cable, the deviation switch 4 is electrically connected to the deviation detection input end of the integrated protection device 6 through a cable, the pull rope switch 5 is electrically connected to the pull rope detection input end of the integrated protection device 6 through a cable, and the output end of the integrated protection device 6 is electrically connected to the input end of the belt conveyor PLC master station 7 through a cable. Then, the output end of the belt conveyor PLC master station 7 is electrically connected to the input end of the host computer 8 through a cable. According to the on-site requirements, a belt protection device with a fault positioning function is installed around the belt conveyor (including a chute blocker 1, a slip detector 2, a longitudinal tear detector 3, a deviation switch 4, and a pull rope switch 5). At the same time, an external address encoder is installed on each component of the existing belt protection device that does not have a positioning function, and the address of each component of the belt protection device is encoded. The status information of each component of the belt protection device is introduced into the comprehensive protection device 6 through the RS485 communication cable. The comprehensive protection device 6 communicates with the PLC master station 7 of the belt conveyor through the cable. When a component on site operates or fails, the PLC master station 7 of the belt conveyor sends an alarm message to achieve accurate positioning of the on-site operating components.

[0014] A plurality of slidingly connected first fixing members 9 are inserted into the shell of the comprehensive protection device 6, a first sealing ring 10 is fixedly embedded in the first fixing member 9, a second fixing member 11 is externally threadedly connected to the first fixing member 9, a second sealing ring 12 is fixedly installed at one end of the second fixing member 11, and at the same time, since there is a lot of dust and vibration in the working environment of the belt conveyor, the first fixing member 9 and the second fixing member 11 are threadedly connected to each other to clamp the shell of the comprehensive protection device 6 in the middle, so that a tighter seal is achieved by using the second sealing ring 12 and the squeezed and deformed first sealing ring 10, and the deformed first sealing ring 10 will also squeeze the cable more, thereby maintaining the stability of the cable and avoiding loosening of the joint due to the vibration of the cable.

[0015] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A belt safety protection system with fault location function, characterized in that: It includes a chute blocker, a slip detector, a longitudinal tear detector, a deviation switch, a pull rope switch, an integrated protection device, a belt conveyor PLC master station and a host computer. The chute blocker is electrically connected to the chute detection input terminal of the integrated protection device through a cable, the slip detector is electrically connected to the slip detection input terminal of the integrated protection device through a cable, the longitudinal tear detector is electrically connected to the longitudinal tear detection input terminal of the integrated protection device through a cable, the deviation switch is electrically connected to the deviation detection input terminal of the integrated protection device through a cable, the pull rope switch is electrically connected to the pull rope detection input terminal of the integrated protection device through a cable, the output terminal of the integrated protection device is electrically connected to the input terminal of the belt conveyor PLC master station through a cable, and the output terminal of the belt conveyor PLC master station is electrically connected to the input terminal of the host computer through a cable.

2. A belt safety protection system with fault location function according to claim 1, characterized in that: A plurality of slidingly connected first fixing members are inserted into the shell of the comprehensive protection device, a first sealing ring is fixedly embedded in the first fixing member, a second fixing member is externally threadedly connected to the first fixing member, and a second sealing ring is fixedly installed at one end of the second fixing member.

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