CN2133557Y

CN2133557Y - Anti-bias automatic correction unit for belt conveyor

Info

Publication number: CN2133557Y
Application number: CN 92203751
Authority: CN
Inventors: 张云江; 张翠兰
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-03-07
Filing date: 1992-03-07
Publication date: 1993-05-19
Anticipated expiration: 2002-03-07

Abstract

The utility model relates to an electromechanical integration automatic correction device used for a belt conveyer to prevent a conveyer belt off tracking. The device adopts an electromechanical integral structure in which photoelectric detection, electronic control, a bidirectional motor, a feed screw and a driving fork execute the correction. The device fixed on the belt conveyer has the automatic correction function if the conveyer belt tracks off during operation. The utility model which has easy installation on the existing belt conveyer, higher practicability and versatility can raise work efficiency and reduce labor intensity.

Description

Anti-bias automatic correction unit for belt conveyor

The utility model relates to a kind of device of proofreading and correct belt anti-deviation, especially a kind of photoelectric effect that utilizes, the anti-deviation automatic correction device of mechanically operated belt transporter.

Many factories and miness all have the belt transporter that transports the material that minces specially, and these belt transporters are in the middle of operation, for various reasons, the phenomenon of sideslip to the left or to the right all may appear at any time, cause material to scatter, proofread and correct, also can cause contingency sometimes as untimely.In order to proofread and correct, on belt transporter, be provided with more than one correction carrying roller, when in case sideslip takes place, in time pull the correction carrying roller by the belt operative employee, the belt of sideslip can be corrected, like this, just caused a kind of high efficiency machinery to be equipped with the inharmonious phenomenon of manual synchronizing, the belt operative employee is in long high-pressure state, and the moment is watching the belt of rapid movement attentively otherwise in a single day neglecting, and accident just might meet accident.In addition, during belt deviation, rub mutually, cause the belt limit to be worn and torn too early, influenced service life with the next door edger roll.

The purpose of this utility model is in order to overcome above disadvantage, to alleviate labor strength, increase work efficiency, prolong the belt operating cycles, design a kind of photoelectric effect that utilizes, the anti-deviation automatic correction device of mechanically operated belt transporter.

The purpose of this utility model realizes as follows:

The utility model is made up of electronic controller and mechanical actuating mechanism, it is characterized in that electronic controller is to be made of power circuit, photoelectric detective circuit, control circuit three part groups; Mechanical actuating mechanism by a motor-operated reductor of 220V alternating-current bidirectional, with reductor slow-speed shaft bonded assembly screw mandrel, and with the other end of this screw mandrel threadably the bonded assembly transmission fork form, reversing motor and reductor are fixed on the base, and transmission fork places in the guide-track groove of same base.Reversing motor drives reductor, the reductor slow-speed shaft is connected with leading screw.

Power circuit divides two parts again: a part is that the 220V alternating current directly provides power supply for reversing motor, after a part is the step-down of 220V alternating current process, rectification, filtering, send in the circuit of three-terminal voltage-stabilizing integrated, and export stable 18V direct current (DC) and provide power supply for controller.Photoelectric detective circuit is made up of two infraluminescence pipes and two infrared receiving tubes, after the 18V direct current (DC) passes through step-down respectively, be connected on the infraluminescence pipe, make the infraluminescence pipe send stable infrared light, these two infraluminescence pipes are separately fixed at the top of belt transporter belt both sides 2cm, two infrared receiving tubes place the travelling belt down either side respectively, and it is corresponding with the infraluminescence pipe respectively, when travelling belt normally moves, the infrared ray that the infraluminescence pipe sends just in time is radiated at respectively on the mouth of pipe of cooresponding infrared receiving tube.Control circuit is made up of switch integrated circuit and bidirectional thyristor, as left and right sides sideslip automatic control switch.

Transmission fork is a slide block that can move in guide-track groove, has a vertical prong on the top of slide block, is used to block the correction roller rack.When the transmission fork displacement, prong can be pulled the correction roller rack, drives to proofread and correct carrying roller correction belt, reaches with manpower and pulls same effect.

Its principle of work is that the infrared light that the infraluminescence pipe of this side sends is blocked by belt when belt during to a side sideslip, makes infrared receiving tube not receive infrared light and ends, thereby produced control signal, offers control circuit.Control circuit then removes to control reversing motor according to control signal and does and be rotated in the forward accordingly or contrarotation, thereby by reductor and leading screw, drives the transmission fork displacement and go to carry out work from the dynamic correction belt.

Enthusiasm of the present utility model is its automatic compensation belt deviation; can avoid former belt conveyor belt other edger roll and belt friction; prolonged belt service life; reduced owing to belt damages the shutdown service work that causes; improved capacity rating; because the utility model degree of automation is higher, therefore alleviated labor strength.

Description of drawings is as follows:

Fig. 1 is the electronic controller circuit diagram.

Fig. 2 is the mechanical drive assembly drawing.Wherein:

1, is reversing motor

2, be reductor

3, be turn-screw

4, be transmission fork

5, be base

6, be guide-track groove

7, be prong

Further narrate concrete structure of the present utility model and embodiment below in conjunction with accompanying drawing.

As shown in Figure 1, circuit construction of electric power is as follows, and in two power leads of 220V alternating current, a line A is a common reference point, and another line B directly joins with reversing motor M, the while resistance R ₁Also join, pass through R with the B line ₁Step-down, R ₁The other end and rectifier diode D ₅Positive pole join diode D ₅Negative pole and cond C ₁Positive pole join after, again with circuit of three-terminal voltage-stabilizing integrated IC ₃Input end join IC ₃Ground terminal and A line join.IC ₃Mouth be the anodal C line of low potential source, at this moment making the voltage of A, C line-to-line is the 18V direct current (DC), aims at controller and photoelectric control circuit provides power supply.The structure of photoelectric control circuit is as follows: it is by the infraluminescence pipe D that is separately fixed at travelling belt both sides 2cm top ₁, D ₂Be separately fixed at travelling belt both sides 2cm below and respectively with D ₁, D ₂Corresponding infrared receiving tube BG ₁, BG ₂Form.Infraluminescence pipe D ₁, D ₂Negative pole all be connected on the R point A line, positive pole passes through resistance R respectively ₃, R ₂Be connected on the C line infrared receiving tube BG ₁, BG ₂Emitter all join with the A line, collecting electrode respectively with resistance R ₅, R ₄Join resistance R ₅, R ₄The other end be connected on the C line.The structure of control circuit is as follows: it is by switch integrated circuit IC ₁, IC ₂Resistance R ₇, R ₆Diode D ₃, D ₄, bidirectional thyristor BCR ₁, BCR ₂Form switch integrated circuit IC ₁, IC ₂Crus secunda respectively with infrared receiving tube BG ₁, BG ₂Collecting electrode join IC ₁, IC ₂The 3rd pin all connect the A line, first pin with after the 5th pin separately is in parallel respectively with resistance R ₇, R ₆Join resistance R ₇, R ₆The other end be connected on the C line IC ₁, IC ₂The 4th pin respectively with resistance R ₉, R ₈Join R ₉, R ₈The other end be connected on the C line IC ₁, IC ₂The 4th pin simultaneously respectively again with diode D ₃, D ₄Positive pole join D ₃, D ₄Negative pole respectively with bidirectional thyristor BCR ₁, BCR ₂The control utmost point join BCR ₁, BCR ₂T ₁End all joins BCR with the A line ₁, BCR ₂T ₂End is connected on being rotated in the forward of reversing motor respectively and holds and the contrarotation end.Cond C ₄With resistance R ₁₂In parallel with the positive and negative two ends of reversing motor again after the series connection, cond C ₃With resistance R ₁₀After the series connection again with BCR ₂T ₁, T ₂The two ends parallel connection, cond C ₅With resistance R ₁₁After the series connection again with BCR ₁T ₁, T ₂The two ends parallel connection.

Between reversing motor among Fig. 2 (1) and the reductor (2), can adopt conventional approach to connect being connected between reductor (2) slow-speed shaft and the leading screw (3), leading screw (3) is connected threadably with transmission fork (4), reversing motor (1) and reductor (2) all are fixed on the base (5), transmission fork (4) places the guide-track groove (6) of same base, transmission fork (4) can be the slide block of energy sway in guide-track groove (6), open a vertical prong (7) on the top of slide block, be used to block the correction roller rack, open tapped bore at the waist of slide block, in order to the screw thread noose of leading screw.

When belt transporter is started working, connect automatic correction device 220V source of AC, two infraluminescence pipe D ₁And D ₂All send stable infrared light, when travelling belt is in the center position operation, two infrared receiving tube BG ₁And BG ₂All can receive infrared light, at this moment infrared receiving tube BG ₁And BG ₂All conductings, the switch integrated circuit IC in the control circuit ₁, IC ₂All conductings, bidirectional thyristor BCR ₁, BCR ₂All end the reversing motor transfixion.When travelling belt to the left during sideslip, in case surpass 3cm, travelling belt is with infraluminescence pipe D ₁The infrared light that sends all blocks, infrared receiving tube BG ₁Because not receiving infrared light ends immediately, form offset signals, the switch integrated circuit IC in the control circuit ₁End bidirectional thyristor BCR ₁The control utmost point obtain energizing signal, thereby triggering and conducting, reversing motor (1) begins to be rotated in the forward, driving leading screw (3) through reductor (2) slowly rotates, with leading screw (3) threadably bonded assembly transmission fork (4) forward moves in guide-track groove reposefully, and drive the correction roller rack place on transmission fork (4) prong and carry out forward and proofread and correct, promptly proofread and correct carrying roller and carry out forward and proofread and correct, make travelling belt return the center position normal operation gradually, then infraluminescence pipe D ₁The infrared light that sends again can be by infrared receiving tube BG ₁Receive, control circuit turn-offs, and reversing motor (1) quits work, and transmission fork (4) stops to move.As a same reason, when travelling belt to the right during sideslip, infrared receiving tube BG ₂Detect offset signals, the switch integrated circuit IC in the control circuit ₂End bidirectional thyristor BCR ₂Conducting, then reversing motor (1) contrarotation, transmission fork (4) then oppositely moves, drive the correction carrying roller and oppositely proofread and correct, make travelling belt get back to the center position normal operation gradually, then travelling belt no longer blocks infrared receiving tube, and make automatic correction device stop action, so no matter the travelling belt of belt transporter any to the left and right one side skew all can in time pull the correction carrying roller automatically and proofread and correct, and makes that travelling belt can normal operation.

Claims

1, a kind of anti-deviation automatic correction device of being made up of electronic controller and mechanical actuating mechanism of belt transporter is characterized in that electronic controller is made up of power circuit, photoelectric detective circuit, control circuit; The reductor (2) that mechanical actuating mechanism is driven by alternating-current bidirectional electrical motor (1), form with engage thread bonded assembly transmission fork (4) with reductor slow-speed shaft bonded assembly screw mandrel (3) and with this screw mandrel other end; Reversing motor and reductor are fixed on the base (5), and transmission fork places in the guide-track groove (6) of this base.

2, the anti-deviation automatic correction device of belt transporter according to claim 1 is characterized in that a line A is a common reference point in two power leads of described power circuit 220V alternating current, and another line B common terminal direct and reversing motor M is joined; While and resistance R ₁An end join R ₁The other end and diode D ₅Positive pole join; Diode D ₅Negative pole and cond C ₁An end and circuit of three-terminal voltage-stabilizing integrated IC ₃Input end join IC ₃Ground terminal and common reference point A line join IC ₃Mouth be the anodal C line of low potential source.

3, the anti-deviation automatic correction device of belt transporter according to claim 1, it is by the infraluminescence pipe D that is separately fixed at top, travelling belt both sides to it is characterized in that described photoelectric detective circuit ₁, D ₂Be separately fixed at the travelling belt down either side and and D ₁, D ₂Corresponding infrared receiving tube BG ₁, BG ₂Form.The D of infraluminescence pipe ₁, D ₂Negative pole all be connected on the A line, positive pole respectively with electricity group R ₃, R ₂An end join R ₃, R ₂The other end link to each other with the C line.Infrared receiver tube BG ₁, BG ₂Emitter all join with the A line, collecting electrode respectively with resistance R ₅, R ₄Join resistance R ₅, R ₄Another termination C line.

4, the anti-deviation automatic correction device of belt transporter according to claim 1 is characterized in that the switch integrated circuit IC of described control circuit ₁, IC ₂The 2nd pin respectively with infrared receiving tube BG ₁, BG ₂Collecting electrode join IC ₁, IC ₂The 3rd pin all connect the A line, the 1st pin with after the 5th pin separately is in parallel respectively with resistance R ₇, R ₆Join resistance R ₇, R ₆Another termination C line; IC ₁, IC ₂The 4th pin respectively with resistance R ₉, R ₈Join; R ₉, R ₈Another termination C line; IC ₁, IC ₂The 4th pin simultaneously respectively with diode D ₃, D ₄Positive pole join; D ₃, D ₄Negative pole respectively with bidirectional thyristor BCR ₁, BCR ₂The control utmost point join BCR ₁T ₁End all joins T with the A line ₂End connects being rotated in the forward of reversing motor respectively and holds and the contrarotation end.Cond C ₅With resistance R ₁₁After the series connection again with BCR ₁T ₁, T ₂The two ends parallel connection, cond C ₄With resistance R ₁In parallel with the positive and negative two ends of reversing motor again after 2 series connection, cond C ₃With resistance R ₁₀After the series connection again with BCR ₂T ₁, T ₂The two ends parallel connection.