CN2086740U

CN2086740U - Overload alarm for ropeway

Info

Publication number: CN2086740U
Application number: CN 90222906
Authority: CN
Inventors: 吕守明; 黄登民
Original assignee: JIANSHE FOREST MANAGEMENT STATION LANGXIANG FOREST BUREAU
Current assignee: JIANSHE FOREST MANAGEMENT STATION LANGXIANG FOREST BUREAU
Priority date: 1990-10-30
Filing date: 1990-10-30
Publication date: 1991-10-16

Abstract

The utility model discloses an overload alarm for ropeway, comprising a dish type mechanical transducer, a dual safety switch, a control circuit and an alarm device. The dish type mechanical transducer comprises a dish type spring, a bottom board, a running rope clip and a positioning rope clip. The dual safety switch comprises a regulating bolt and a contact point which is arranged on dish type spring. The control circuit comprises a switch circuit, an oscillation circuit and a relay. The utility model has the advantages of simple structure, easy use and safe utilization. The overload alarm for ropeway is suitable for fieldwork, and the overload alarm for ropeway is not affected by the environmental temperature and humidity.

Description

Overload alarm for ropeway

The utility model is a kind of strap overload warning device, is used for reporting to the police in advance when pulling force that strap bears surpasses prescribed limit, is mainly used in the field and does the overweight of industry place, the warning of haul strap when overload.

Be used to measure the pulling force of strap pulling force at present in respect of a variety of, but be to be used in laboratory or working environment comparatively in the pulsation-free environment mostly, do in the industry environment in the incompatibility field, because the field is subjected to the influence of factors such as temperature, humidity, vibration bigger, the reliability of warning can not guarantee.

The purpose of this utility model is to propose a kind of strap overload warning device, and the needs of this annunciator adaptation field work are not subjected to the influence of environment, and safe and reliable.

Major technique content of the present utility model is that this strap overload warning device is by dish-like mechanical pick-up device, the double insurance switch, control circuit and warning device are formed, dish-like mechanical pick-up device is by disk spring 2, base plate 6, running rope folder 1, deciding rope clamp 4 forms, the double insurance switch is to regulate bolt 8 by two that are spun on the base plate 6,9, regulating the contact 3 that responds the pulling force scale on the bolt 9 and be fixed on the disk spring 2 forms, base plate 6 also has binding post A, B, C, binding post C and contact 3 are connected by lead, the B binding post is connected with contact 11 leads on the bolt 9, and the A binding post is connected with bolt 8 upper contacts 10 leads.Control circuit is by switch circuit, and oscillating circuit, relay M form, and switch circuit is by BG ₁Aerotron and resistance R ₁, R ₂Form, oscillating circuit is by aerotron BG ₂And resistance R ₃, R ₄, voltage transformer T forms, warning device is made up of relay M, fast Chinese percussion instrument W and indicator lamp J, binding post A, B, C are connected with A ', B ', the C ' of warning circuit respectively.

Technique effect of the present utility model is that this strap overload warning device is simple in structure, is a kind of energy-conservation harmless warning, at the bottom of esy to use, safe and reliable, the cost, adapt to field work, not influenced by environment, temperature, humidity etc.

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is schematic circuit diagram of the present utility model;

Rope clamp, 5 steel ropes, 6 base plates, 7 contacts, 8 adjusting bolts, 9 adjusting bolts, 10 contacts, 11 bag pads, A, B, C binding post, A ', B ', C ' contact, BG are decided in 1 running rope folder, 2 disk springs, 3 contacts, 4 ₁, BG ₂Aerotron, R ₁, R ₂, R ₃, R ₄Resistance, T voltage transformer, the fast Chinese percussion instrument of W, M relay, J indicator lamp, K relay tip.

Realize the utility model preferred plan as shown in the figure, this strap overload warning device is by dish-like mechanical pick-up device, and double insurance switch, control circuit, warning device are formed.Dish-like mechanical pick-up device by disk spring 2, base plate 6, running rope folder 1, decide rope clamp 4 and form, running rope folder 1 and decide the U type structure that rope clamp 4 is made by the garden steel, two ends are with screw, disk spring 2 is a convex steel plate, respectively there are two holes at smooth place, two ends, wears running rope folder 1 and decide rope clamp 4 in order to insert, and running rope is pressed from both sides and to decide rope clamp and disk spring is fixed by nut; The double insurance switch is made up of base plate 6, adjustable screw 8,9, contact 3; Base plate 6 is made by the tee-steel plate, the one end is narrower, other end broad, two holes are arranged on the wide end, be used for inserting to wear deciding rope clamp 4, there are two screws the base plate middle part, adjustable screw 8,9 screw in the hole, pass freely through in the middle of the driven rope clamp of narrow end, be that running rope folder 1 is with disk spring 2, steel rope 5 tightens together, and base plate and running rope folder 1 are bearing fit, regulate bolt 8, the 9th, on plain bolt, process garden shape handle, an end of regulating bolt 9 is an elastic contact 10, an end of regulating bolt 8 is an assembling interconnecting 7, and contact 3 and small punty insulation connect, and the other end of small punty is welded in the centre of disk spring 2, contact 3 is relative with the resilient contact 10 of regulating bolt 9, also there is not A on the base plate 6, B, three binding posts of C, the A binding post connects with contact 7 leads of regulating bolt 8, and B connects with resilient contact 10 leads of regulating bolt 9, C is connected with contact 3, type bag pad 11 is arranged below the base plate 6; Control circuit is made up of switch circuit, oscillating circuit, relay M, and switch circuit is by BG ₁Aerotron and resistance R ₁, R ₂, normal opened contact A ', B ' composition, oscillating circuit is by aerotron BG ₂, resistance R ₃, R ₄, voltage transformer T, fast Chinese percussion instrument W form, relay M and contact K formation interrupting relay, in parallel with oscillating circuit, indicator lamp J is connected in the relay circuit; Contact A, B, C are connected with A ', B ', the C ' of control circuit respectively.

The installation method of this strap overload warning device is, at first will decide rope clamp 4 blocked steel rope 5, passed two holes of disk spring 2 right-hand members and two holes of base plate 6 right-hand members again, be spun on the U type with two nuts at last and decide to tighten on the rope clamp 4 and with it, the right-hand member of right-hand member, the base plate of right-hand member, the disk spring of steel cable is consolidated forms fixed the cooperation.Running rope folder 1 blocked the steel rope left end and passed two holes of disk spring left end, carried on the arm and screwed on two nuts after base plate passes two Kongzuis that wrap pad 11 again, because bag pad 11 is a Qian shape structure, so the left end steel rope is consolidated with disk spring 2 left ends and forms fixed the cooperation after nut screws, base plate 6 can freely pass freely through the formation running-fit in the middle of running rope folder 1.

The using method of this overload warning device is, at first by running rope folder 1, decide rope clamp 4 disk spring 2 and the base plate 6 of steel rope and mechanical pick-up device be fixed together, bolt 9 is adjusted in the steel rope ultimate tension, and adjustable bolt 8 makes the contact on its contact and the bolt 9 keep well contacting then.

The principle of work of this overload warning device is, when steel rope 5 two ends do not have pulling force, or pulling force is during less than prescribed limit, disk spring is indeformable or distortion is very little, contact 3 does not contact with contact 10, promptly A, B, do not contact, then C ', B ' also do not contact, switch circuit is for opening circuit, because contact 3 does not contact with contact 10, makes contact 10 and 7 can keep well contacting, promptly A and B join, A ' and B ' join, switch triode BG ₁Emitter-base diode do not have bias voltage or bias voltage is too little, to making switch triode BG ₂End, be equivalent to disconnect, at this moment relay circuit, oscillating circuit, indicator lamp J do not obtain operating voltage, are in static state and do not work, and promptly do not report to the police.

After the strap two ends are stressed, make the disk spring pressurized and move down the contacting that makes on contact 3 and the bolt 9, this moment control circuit C ' and B ' connection, oscillating circuit work, produce oscillating current, fast Chinese percussion instrument W is reported to the police, and relay M face contact K intermittently connects simultaneously, thereby makes indicator lamp J flashing light alarm.In order to prevent contact C ', B ' bad contact, increase BG ₁Switch circuit, the contact that makes bolt 9 after contact 3 and contact on the bolt 9 join separates with the contact of bolt 8, makes warning circuit A ', B ' disconnection, thereby makes switch triode BG ₁The acquisition bias voltage is started working, BG ₁Conducting makes oscillating circuit BG ₂Also can pass through BG with relay M ₁Obtain operating voltage, guarantee oscillating circuit and relay M reliable operation.

This strap overload warning device disk spring is made by spring steel, and other are made by common iron.

Claims

1, a kind of strap overload warning device, by dish-like mechanical pick-up device, double insurance switch, control circuit and warning device are formed, it is characterized in that, dish-like mechanical pick-up device by disk spring 2, base plate 6, running rope folder 1, decide rope clamp 4 and form, running rope folder 1 and decide the U type structure that rope clamp 4 is made by the garden steel, two ends are with screw, disk spring 2 is a convex steel plate, respectively there are two holes at smooth place, two ends, wear running rope folder 1 and decide rope clamp 4 in order to insert, and by nut with the running rope folder with decide rope clamp and disk spring 2 is fixed; The double insurance switch is by base plate 6, governing screw 8,9, and contact 3 is formed; Base plate 6 is made by the T-steel plate, the one end is narrower, other end broad, two holes are arranged on the wide end, be used for inserting to wear deciding rope clamp 4, there are two screws the base plate middle part, adjustable screw 8,9 screw in the hole, pass freely through in the middle of the driven rope clamp 1 of narrow end, be that running rope presss from both sides 1 with disk spring 2, steel rope 5 tightens together, and base plate and running rope folder 1 are bearing fit, regulate bolt 8, the 9th, on plain bolt, add garden shape handle, an end of regulating bolt 9 is an elastic contact 10, and an end of regulating bolt 8 is an assembling interconnecting 7, and the other end of contact 3 and small punty insulation connection small punty is welded in the centre of disk spring 2, contact 3 is relative with the resilient contact 10 of regulating bolt 9, also has A on the base plate 6, B, three binding posts of C, A binding post and contact 7 wire couplings of regulating bolt 8, B connects with resilient contact 10 leads of regulating bolt 9, C is connected with contact 3, Qian type bag pad 11 is arranged below the base plate 6; Control circuit is by BG ₁Aerotron and resistance R ₁, R ₂, normal opened contact A ', B ' composition, oscillating circuit is by aerotron BG ₂, resistance R ₃, R ₄, voltage transformer T, fast Chinese percussion instrument W form, and relay M and contact K constitute interrupting relay, and in parallel with oscillating circuit, indicator lamp J is connected in the relay circuit; Contact A, B, C are connected with A ', B ', C ' in the control circuit respectively.