CN202784730U

CN202784730U - Detecting and alarming device of slipping of belt

Info

Publication number: CN202784730U
Application number: CN 201220285250
Authority: CN
Inventors: 张德华
Original assignee: Baotou Iron and Steel Group Co Ltd
Current assignee: Baotou Iron and Steel Group Co Ltd
Priority date: 2012-06-18
Filing date: 2012-06-18
Publication date: 2013-03-13
Anticipated expiration: 2022-06-18

Abstract

The utility model discloses a detecting and alarming device of slipping of a belt and belongs to the technical field of machinery. An iron plate in a certain dimension is arranged on a tail wheel of a belt, a detecting device is arranged on a tail wheel of a base seat, and the detecting device is close to a switch, a time relay and the like. The installation distance between the steel plate and the detecting device is 10-20 mm. The detecting device is in electrical connection with the alarm. When the belt runs, the belt performs a point seal, a time-counting unit runs in a counting state, and the steel plate on the tail wheel of the belt rotates along the tail wheel of the belt. The steel plate approaches an approach switch once when the steel plate rotates a circle, and the approach switch is connected once under the influence of the steel plate, and the time relay resets and clears automatically. When the belt slips, the belt cannot drive the tail wheel to rotate, and the steel plate does not approach the approach switch, and the time relay does not reset in a set time. When the set time is up, the time relay outputs a signal, at the same time outputs sound and light alarm signals and controls the belt to stop running.

Description

The detection alarm device of slipping of the belt

One, affiliated technical field

Belong to field of mechanical technique.

Two, background technology

At present in industries such as metallurgy, building, mine, electric power, chemical industry, cement, grain, building materials, harbours, belt feeder as one of main transportation means, bearing important transportation burden, more than wide, the consumption of its range of use, is that other fixed class transportation means is incomparable.Because its long operational time; transported material is assorted; in use various faults can appear; impact is normal to be used; and most belt feeder is not all taked the actv. fender guard; in the situation that belt feeder is pushed down by fortune material; often cause slipping of the belt and rub belt even cause that the accident of fire occurs; the belt of returning mine such as Iron Works is long narrower; the bad control of the quantity of return mines of ore; the phenomenon that often causes the belt binder and rub on average has 3-4 time more than per month, and the major cause that belt rubs is that the great wheel of belt is still continuing rotation in the situation of belt binder; and at this moment whole belt comprises tail wheel because binder has stopped operating; the belt great wheel of rotating and belt friction rub belt even catch fire, and the lighter affects production, and severe one can cause great safety misadventure.

Three, summary of the invention

The purpose of this utility model provides a kind of detection alarm device of slipping of the belt.Under the structure that does not change belt, the protection belt is not rubbed, and prolongs the service life of belt.

The technical solution of the utility model is that installation detecting device on the tail wheel base, detecting device comprise approach switch, time relay etc. on the iron plate of belt tail wheel fixed installation certain size, and the mounting distance of iron plate and detecting device is 10-20mm.

The detecting device principle of work is as follows: detecting device is connected with annunciator and switches on, when belt moves, the belt operating point is closed, timing unit operates in time status, under the belt normal operation, iron plate on the tail wheel is rotated with tail wheel, every rotation one circle, and iron plate and approach switch approach once, approach switch is just connected once, time relay can reset and automatic clear, and at this moment the detection alarm device does not have output signal, when slipping of the belt, belt can not drive tail wheel and rotate, iron plate just can not affect approach switch, and approach switch is not connected, and time relay can not reset in setting-up time, during to setting-up time, the detection alarm device is output signal just, and the prompting belt skids, and sends simultaneously the sound and light alarm signal and control belt out of service.Output signal also can advance PLC and show slipping of the belt and control belt, also can simplify circuit, is directly inputted to Computer I/O template with the output of approach switch, enters computer system, goes to control the warning of skidding of belt with program.

Four, description of drawings

Fig. 1 is belt tail wheel and detecting device installation site scheme drawing (left view);

Fig. 2 is belt tail wheel and detecting device installation site scheme drawing (front elevation);

Fig. 3 is the detection alarm schematic diagram of device;

Fixedly iron plate, 4-tail wheel base, 5-belt tail wheel, 6-base screw, 7-belt, 8-wire, 9-power supply, 10-belt operating point, 11-timing unit, 12-relay point, 13-output signal, 14-approach switch, 15-intermediate relay of 1-iron plate, 2-detecting device, 3-among the figure

Five, the specific embodiment:

Below in conjunction with drawings and Examples the utility model is further described.

Embodiment 1:

It is narrower that the belt 7 of returning mine of certain the iron-smelter 3# of iron company blast furnace is grown (having more than 100 meter), often causes belt 7 binders and the phenomenon that rubs, determines installation detecting device 2 on the belt tail wheel 5 of belt 7.Detecting device 2 comprises approach switch 14, time relay 11 etc.Make approach switch 14 closures iron plate 1 is installed at belt tail wheel 5, iron plate 1 is welded on the side of belt tail wheel 5, the distance of adjusting iron plate 1 and approach switch 14 is 10-20 centimetre, make approach switch 14 can be reliably closed (such as Fig. 1, shown in Figure 2), detecting device 2 is connected with annunciator (not indicating among the figure) and switches on, when belt 7 operation, belt operating point 10 closures, timing unit 11 operates in time status, in belt 7 normal operation situations, iron plate 1 on the belt tail wheel 5 is rotated with belt tail wheel 5, every rotation one circle, iron plate 1 approaches once with approach switch 14, under the impact of iron plate 1, approach switch 14 is just connected once, time relay 11 can reset and automatic clear, at this moment, time relay 11 does not have output signal 13, when belt 7 skids, belt 7 can not drive belt tail wheel 5 and rotate, iron plate 1 just can not affect approach switch 14, and approach switch 14 is not connected, and time relay 11 can not reset in setting-up time, during to setting-up time, detecting device 2 is output signal 13 just, and prompting belt 7 has skidded, and sends simultaneously the sound and light alarm signal and controls belt (as shown in Figure 3) out of service.The normal opened contact of approach switch 14 is tapped into computer control system (not indicating among the figure) by wire 8, output signal 13 also can advance PLC and show that belt 7 skids and controls belt 7, also can simplify circuit, approach switch 14 can be directly inputted to computer system, goes to control the warning of skidding of belt 7 with program.In program, detect the closed situation of approach switch 14, with pulse timer 11(2s regularly) closure is once in regularly to remove to judge approach switch 14, detect the running condition of belt 7, if approach switch 14 does not have the closure can not reset pulse time meter 11 in 2S, pulse timer 11 sends signal, illustrate that belt 7 has skidded, send alerting signal, installed on this belt 7 after the detection alarm device 2 of slipping of the belt, if in a single day belt 7 skids, send timely alerting signal, cut off the electricity supply 9.

Through for a long time operation, the fault that belt 7 does not rub again, effect is apparent in view.

Claims

1. the detection alarm device of slipping of the belt, it is characterized in that on iron plate of belt tail wheel fixed installation, installation and measuring warning device on the tail wheel base, the detection alarm device comprises approach switch, time relay, annunciator, the mounting distance 10-20mm of iron plate and detection alarm device; Detecting device and annunciator UNICOM and energising, when belt moves, the belt operating point is closed, timing unit operates in time status, iron plate on the belt tail wheel is rotated with tail wheel, every rotation one circle, and iron plate and approach switch approach once, approach switch is just connected once, and time relay can reset and automatic clear; When slipping of the belt, belt can not drive the belt tail wheel and rotate, and iron plate just can not affect approach switch, approach switch is not connected, time relay can not reset in setting-up time, and the detection alarm device is output signal just, sends simultaneously the sound and light alarm signal and control belt out of service.