CN202516393U

CN202516393U - Over-torque early warning protection device for mechanical slag removal grating machine

Info

Publication number: CN202516393U
Application number: CN2012201972863U
Authority: CN
Inventors: 苟晓东; 沈军; 马涛; 刘强; 陈华东; 董文平
Original assignee: SHANDONG HUANKE ENVIRONMENT ENGINEERING Co Ltd
Current assignee: SHANDONG HUANKE ENVIRONMENT ENGINEERING Co Ltd
Priority date: 2012-05-04
Filing date: 2012-05-04
Publication date: 2012-11-07
Anticipated expiration: 2022-05-04

Abstract

The utility model provides an over-torque early warning protection device for a mechanical slag removal grating machine. The over-torque early warning protection device comprises a torque sensor, a data processing unit, a wireless transmitting device, a wireless receiving device and a PLC (Programmable Logic Controller), wherein the torque sensor is connected with the data processing unit; the data processing unit is connected with the wireless transmitting device; the wireless transmitting device is connected with the wireless transmitting device in a wireless mode; and the wireless receiving device is connected with the PLC. Data of torque stressed during operation of a transmission shaft is detected by the torque sensor in real time, is processed by the data processing unit and then transmitted to the wireless receiving device by the wireless transmitting device; the data is transmitted to the PLC by the wireless receiving device; and when the detected torque stressed by the transmission shaft reaches or exceeds a set value, the mechanical slag removal grating machine automatically stops operation and an alarm signal is immediately sent out. According to the over-torque early warning protection device, on-line detection of torque transferred by the transmission shaft is realized, and fault prediction and alarm are performed, so that equipment operation is safe and reliable.

Description

Machinery scarfing cinder grid maker is crossed the moment early warning protector

Technical field

The utility model relates to a kind of early warning protector of scarfing cinder grid maker when running moment is excessive that is used for sewage disposal, belongs to the scarfing cinder grid maker technical field in the sewage disposal.

Background technology

In sewage treatment industry; Commonly used to grid (processing) by one group of parallel metal grizzly bar or screen cloth; Be installed in the water inlet of foul drainage, pump house sump or the end of sewage treatment plant, in order to suspension or the floating thing of holding back increasing, like fiber, onal, hair, wood chip, pericarp, vegetables, plastic products etc.; So that alleviate the processing load of subsequent treatment structures, and make it normal operation.The material that is trapped is called the grid slag, need clear up these grid slags, and according to the scarfing cinder mode, grid can be divided into artificial scarfing cinder grid and mechanical scarfing cinder grid maker again.Be to improve work and sanitary condition, when the grid quantity of slag is big (greater than 0.2m ³/ day), often adopting mechanical scarfing cinder grid maker, mechanical scarfing cinder grid maker commonly used at present has swinging, back rake type, rotary drum etc.Which kind of mode no matter, its structure all are that motor passes through transmission mechanism and drives power transmission shaft and rotate, and power transmission shaft drives carrier chain or conveyer belt operation again, with foreign material by elevating in the sewage.

Because suspension or floating thing in the sewage are not of uniform size; Especially in the municipal wastewater, often contain more paper scrap, polybag, branch etc., cause in above-mentioned mechanical scarfing cinder grid maker running; It is excessive resistance often to occur; The excessive causes motor of current of electric shuts down even situation such as burns, and has reduced the service life of motor, and has been difficult to effectively supervise.Solution for the problems referred to above; Mainly depend on transformation, Precision Machining and the increase overcurrent protection device etc. of manufacturer to local parts such as bearings; The producer that also has self is provided with the mechanical overload safety guard at mechanical scarfing cinder grid maker, and when device fails, shear pin is cut off; Can avoid the equipment overwork, the damage equipment parts.But these methods are to be prerequisite to improve manufacturing cost or damage equipment, all can not fundamentally carry out early warning and protection to the mistake moment phenomenon of equipment.

Chinese patent CN03205256.1 discloses a kind of " sewage disposal grid automaton "; This device comprises a float chamber that float is arranged; Float top in the float chamber is provided with power switch K1, is provided with time relay sj in the voltage circuit of this power switch K1, is parallel with intermediate relay ZJ with time relay sj; A normally closed contact SJK of time relay sj connects with intermediate relay ZJ, and a normal opened contact ZJK of intermediate relay ZJ is parallelly connected with above-mentioned power switch K1.Compared with prior art, this device can start automatically according to the suspension situation that grid adheres to or close the grid drive motors, reduces operating cost.But this device can only start or close the grid drive motors automatically according to the height situation of suspension, can not carry out early warning and protection to the mistake moment phenomenon of equipment equally.

Summary of the invention

The utility model provides a kind of automaticity height, can effectively protect the mechanical scarfing cinder grid maker of equipment to cross the moment early warning protector to crossing the deficiency that the moment resist technology exists in the existing machinery scarfing cinder grid maker running.

The mechanical scarfing cinder grid maker of the utility model is crossed the moment early warning protector, adopts following technical solution:

This prior-warning device; Comprise torque sensor, data processing unit, wireless launcher, radio receiver and PLC Programmable Logic Controller; Torque sensor is connected with data processing unit; Data processing unit is connected with wireless launcher, and radio receiver is connected with wireless mode with wireless launcher, and radio receiver is connected with the PLC Programmable Logic Controller.

When said apparatus is used; Torque sensor, data processing unit and wireless launcher are arranged on the position that does not influence its rotation on the power transmission shaft of mechanical scarfing cinder grid maker; Can rotate with power transmission shaft, the start-up circuit of controlling mechanical scarfing cinder grid maker operation simultaneously also is connected with the PLC Programmable Logic Controller.When mechanical scarfing cinder grid maker running work; Torque sensor detects the power transmission shaft moment in when operation in real time, and sends to data processing unit and carry out data, sends to radio receiver through wireless launcher then; Radio receiver is imported the PLC Programmable Logic Controller with data; After the PLC Programmable Logic Controller receives data, analyze automatically, when mechanical scarfing cinder grid maker power transmission shaft moment reaches or surpass the suffered moment of setting under the mechanical scarfing cinder grid maker normal operating condition of power transmission shaft; PLC Controlled by Programmable Controller machinery scarfing cinder grid maker is out of service, and sends alarm signal immediately.

The utility model can be realized the online detection of the suffered moment of mechanical scarfing cinder grid maker power transmission shaft, and with wireless mode emission with accept receipt, not influence equipment runs well; Can carry out failure predication and warning; And arrestment operation automatically, protected equipment, make the equipment security of operation with reliable.

Description of drawings

Fig. 1 is the structural principle sketch map of the utility model.

Wherein: 1, torque sensor, 2, data processing unit, 3, wireless launcher, 4, radio receiver, 5, the PLC Programmable Logic Controller, 6, mechanical scarfing cinder grid maker.

The specific embodiment

As shown in Figure 1; The mechanical scarfing cinder grid maker of the utility model is crossed the moment early warning protector; Comprise torque sensor 1, data processing unit 2, wireless launcher 3, radio receiver 4 and PLC Programmable Logic Controller 5; Torque sensor 1, data acquisition unit 2 and wireless launcher 3 are arranged on the final drive shaft position of mechanical scarfing cinder grid maker, can rotate with final drive shaft.Torque sensor 1 is connected with data processing unit 2, and data processing unit 2 is connected with wireless launcher 3.Radio receiver 4 is connected with PLC Programmable Logic Controller 5, and radio receiver 4 and wireless launcher 3 are connected with wireless mode.Each parts is existing common technology.

The process that said apparatus is crossed the moment early warning to mechanical scarfing cinder grid maker is described below:

Torque sensor 1, data processing unit 2 and wireless launcher 3 are installed on the power transmission shaft of mechanical scarfing cinder grid maker 6, and are positioned at the position that does not influence the power transmission shaft rotation.Radio receiver 4 can be arranged in the on-the-spot control room of sewage disposal with PLC Programmable Logic Controller 5; The start-up circuit of mechanical scarfing cinder grid maker 6 also is connected the suffered moment numerical value of power transmission shaft when in the program of PLC Programmable Logic Controller 5, setting mechanical scarfing cinder grid maker 6 normal operating conditions with PLC Programmable Logic Controller 5.During the normal operation of machinery scarfing cinder grid maker 6, suffered torque signals when torque sensor 1 detects the power transmission shaft operation in real time, and send this signal to data processing unit 2.Data processing unit 2 constantly sends torque sensor 1 detected small-signal processing and amplifying by wireless launcher 3 then.Receive the signal that wireless launcher 3 sends through radio receiver 4, the line data of going forward side by side is handled, and radio receiver 4 is given this PLC Programmable Logic Controller 5 with transfer of data.After PLC Programmable Logic Controller 5 receives data; With the suffered torque ratio of setting under data in real time and mechanical scarfing cinder grid maker 6 normal operating conditions of power transmission shaft; Reach or surpass the suffered moment of power transmission shaft of setting under the mechanical scarfing cinder grid maker normal operating condition when the suffered moment of detected power transmission shaft; The mechanical scarfing cinder grid maker of PLC Programmable Logic Controller 5 controls is out of service automatically, and sends alarm signal immediately, and the prompting staff checks the scene; Handle, thereby reach the purpose of the mechanical scarfing cinder grid maker of effective protection.

Claims

1. a mechanical scarfing cinder grid maker is crossed the moment early warning protector; It is characterized in that: comprise torque sensor, data processing unit, wireless launcher, radio receiver and PLC Programmable Logic Controller; Torque sensor is connected with data processing unit; Data processing unit is connected with wireless launcher, and radio receiver is connected with wireless mode with wireless launcher, and radio receiver is connected with the PLC Programmable Logic Controller.