CN2664038Y

CN2664038Y - Gate lifting height display and control device

Info

Publication number: CN2664038Y
Application number: CN 200320111397
Authority: CN
Inventors: 张保水
Original assignee: HEBEI DAYU CIVIL ENGINEERING HYDRAULICS EQUIPMENT Co Ltd
Current assignee: HEBEI DAYU CIVIL ENGINEERING HYDRAULICS EQUIPMENT Co Ltd
Priority date: 2003-12-22
Filing date: 2003-12-22
Publication date: 2004-12-15
Anticipated expiration: 2013-12-22

Abstract

The utility model discloses a gate lifting height display and control device. The structure of the utility model is that a CPU is externally connected with an operation keyboard, a display, a switch control circuit and a gate movement distance sensor. An actuating element in the switch control circuit is connected to the main control circuit of a gate headstock; the gate movement distance sensor is arranged on a driven shaft of the gate headstock. The utility model is manufactured with microelectronic technology and is an electronic altimeter particularly to be used for a screw type headstock and a winding headstock for height display and control, which is small in appearance, compact in structure, accurate in measurement and is simple to operate. The error between the lifting height and the measurement is smaller than zero point two millimeters. The utility model is also provided with a limit position alarm, which is applicable to local control and remote centralized control and satisfies the using demand of water conservancy department.

Description

The gate adjustable height shows and control device

Technical field

The utility model relates to a kind of motor operation automaton, and specifically a kind of gate adjustable height shows and control device.

Background technology

The gate that is provided with on various reservoirs, dam generally carries out descending operation control by worm-type open-close machine or winch hoist.And the adjustable height of gate is measured by a kind of mechanical measuring device, and tooth bar promptly is installed on gate, and the statistics of the rotation number of turns by the gear that is meshed with tooth bar is come the adjustable height of metering gate.Because gear and tooth bar have the back lash, therefore must cause the error in dipping of gate adjustable height.This error can reach 100 millimeters the most for a long time, thereby has influence on hydraulic department to putting the accuracy controlling or the metering of (mistake) water yield.Mechanical type measuring apparatus volume is big in addition, debugs loaded down with trivial detailsly, and inconvenience is installed, and data are lost easily, so gate can not arbitrarily be ended in lifting process.

The utility model content

The purpose of this utility model just provides the gate adjustable height that a kind of error in dipping is little, control accuracy is high and shows and control device, to satisfy the use needs of hydraulic department.

The utility model is achieved in that and is circumscribed with operation keyboard, display, ON-OFF control circuit and gate displacement sensor on central processing unit.Executive component in the ON-OFF control circuit is connected on the governor circuit of gate hoist, and gate displacement sensor is installed on the driving shaft of gate hoist.Central processing unit can be connected to form by microprocessor and peripheral circuit, is the master control core of this device.Operation keyboard and display are man-machine dialogue interface.By the displacement of operation keyboard to the lifting of central processing unit input gate, and on display, show, and then key entry " liter " or " falling " instruction (or closed " liter ", " falling " switch), then central processing unit receives instruction, the ON-OFF control circuit action, connect the gate hoist governor circuit, gate promptly rises or descends under headstock gear drives.Simultaneously gate displacement sensor is constantly imported central processing unit with the ascending, descending range data that the rotation number of turns and the move angle of headstock gear driving shaft is converted to the gate correspondence.When the actual lifting value of gate equated with the setting input value, the action of central processing unit command switch control circuit disconnected the governor circuit of gate hoist, thereby stops the lifting of gate, and showed the position height at the present place of gate simultaneously.This device has the current failure memory function, to the shutdown that causes because of power failure in the gate lifting process, still can continue to resume work and finish original operation after energising, makes the gate ascending, descending to predetermined height.

The utility model is a kind ofly to adopt microelectric technique to make, aim at worm-type open-close machine and winch hoist to do and highly show and electronic altimeter that control is used, have that outward appearance is small and exquisite, characteristics such as compact conformation, simple to operate and accurate measurement, error are little, the adjustable height error is less than 0.2 millimeter, and can set at extreme position and report to the police, be applicable to control on the spot and remote centralized control, satisfied the use needs of hydraulic department.

Description of drawings

Fig. 1 is a circuit structure block diagram of the present utility model.

Fig. 2, Fig. 3 are the structural representations of the two kind specific implementations of gate displacement sensor on screw and winch hoist.

Embodiment

As shown in Figure 1, the utility model is made up of central processing unit 1 and external operation keyboard 2, display 3, ON-OFF control circuit 4 and gate displacement sensor 5.Central processing unit 1 can be made up of single-chip microcomputer and peripheral circuit, finishes various demonstrations and control function by control program.The executive component of ON-OFF control circuit 4 can adopt microrelay, and the contact of relay is connected on the governor circuit of gate hoist.Gate displacement sensor 5 (shown in Fig. 2,3) is made up of travel switch 6 and data compass 7, is shaped on the fin 8 that a circle evenly distributes and points to the center of circle on the card of data compass, and the push rod on the travel switch is touched mutually with the fin on the data compass.When the data compass rotated synchronously with the driving shaft on the gate hoist, the fin on the card was constantly touched the push rod on the travel switch, made travel switch constantly send count signal to central processing unit, converted out the lifting moving distance of gate thus.Because the driving shaft of data compass and headstock gear is synchronous, and the trigger pip of travel switch is only relevant with the fin on the data compass, so as long as the fin distribution density on the data compass is suitable, can guarantee the measuring accuracy of gate displacement sensor, nor have any cooperation or kinematic error problem.This is that this device realizes that the pinpoint accuracy of gate adjustable height shows and the key point of control.

Among Fig. 2, data compass 7 is contained on worm gear 9 planes, and worm screw 10 connects gate lifting control motor 11 by belt gear.The electric motor starting running by the V-belt transmission, drives worm screw 10 and rotates, and worm screw drives worm gear 9 and rotates, and worm gear and nut rotate simultaneously, drive the leading screw that connects with nut thread and move up and down.Travel switch 6 is gathered rotation data by the rotation that is contained in the data compass 7 above the worm gear 9.According to the rotation number of turns of worm gear, can record the range ability up and down of screw mandrel (and institute's strap brake door).This is the principle of work of the gate displacement sensor on the worm-type open-close machine.

Among Fig. 3, data compass 7 is contained on sprocket wheel 12 planes, and another sprocket wheel 13 that joins with this sprocket wheel chain is contained on the low speed spindle nose of the reductor 14 that joins with gate lifting control motor 11.Motor 11 drives reductor 14 and rotates, and the sprocket wheel 13 on the reductor slow-speed shaft spindle nose drives sprocket wheel 12 by chain and rotates, installation data compass 7 on the sprocket wheel 12, and travel switch 6 comes image data by the rotation of data compass.According to the rotation number of turns of sprocket wheel 12, can obtain winch hoist and drive the distance that gate rises or descends.

Claims

1, a kind of gate adjustable height shows and control device, it is characterized in that this device is to go up external operation keyboard (2), display (3), ON-OFF control circuit (4) and gate displacement sensor (5) at central processing unit (1).

2, gate adjustable height according to claim 1 shows and control device, it is characterized in that gate displacement sensor (5) is made up of travel switch (6) and data compass (7), be shaped on the fin (8) that a circle evenly distributes and points to the center of circle on the card of data compass, this fin of the push rod on the travel switch is touched mutually.

3, gate adjustable height according to claim 2 shows and control device, it is characterized in that data compass (7) is contained on worm gear (9) plane, and worm screw (10) connects gate lifting control motor (11) by belt gear.

4, gate adjustable height according to claim 2 shows and control device, it is characterized in that data compass (7) is contained on sprocket wheel (12) plane, another sprocket wheel (13) that joins with this sprocket wheel chain is contained on the low speed spindle nose of the reductor (14) that joins with gate lifting control motor (11).