CN202676336U - Mud scraper torque measuring device - Google Patents

Abstract

The utility model provides a mud scraper torque measuring device and relates to the torque measurement of a rotary support type mud scraper. The mud scraper torque measuring device which is applied in the rotary support type mud scraper comprises a valve disk spring guide rod and a bearing arranged on the valve disk spring guide rod. A torsion spring is arranged outside the bearing. The measuring device also comprises a limit switch and a cam cooperating with the limit switch. The cam is connected with the torsion spring through a toothed bar. The measuring device further comprises a digital display converter and a programmable controller. The digital display converter converts electric signals generated according to changes in the distance between the cam and the limit switch into digital signals for remote transmission and meanwhile transmits the signals to the programmable controller. The measuring device has the beneficial effects of always displaying the torque value to reflect the running state of the rotary support type mud scraper when the mud scraper is running and automatically alarming when the torque value is excessively large compared with a preset torque value and making a motor stop working. A transmission mechanism is then prevented from being damaged due to excessive loads.

Description

The mud scraper torque-measuring apparatus

Technical field:

The utility model relates to the torque measurement of a kind of revolution support type mud scraper, is used for revolution support type mud scraper.

Background technology:

At present, revolution support type mud scraper only is furnished with moment of torsion warning self-locking, does not also have to measure moment of torsion and carries out digital signal conveying.Revolution support type mud scraper moment of torsion is the reflection that revolution support type mud scraper driven by motor rake teeth rotates suffered resistance power, it is the direct reflection of revolution support type mud scraper operating condition quality, at present be according to the size of the electric current indirect reaction moment of torsion of motor substantially and then reflect that rake teeth rotates the size of suffered resistance, and then compare by the electric current with design conditions whether draw the running of revolution support type mud scraper normal, running status to revolution support type mud scraper is judged, in time reply processing.To a certain extent, can think this and reflect indirectly that with electric current the judgment mode of moment of torsion and reductor self-locking device come the basis for estimation of revolution support type mud scraper operating condition is inaccurate, the running status of mud scraper can't be correctly grasped, and the excessive damage gear train of load can't be prevented.

Summary of the invention:

The utility model is just in order to address the above problem, and a kind of mud scraper torque-measuring apparatus is provided, and it can realize the measurement to the mud scraper moment of torsion, and digital signal transmitted detection, prevent that mud scraper motor for speed reducer load is excessive, moment of torsion transfinites, and damages gear train.

In order to achieve the above object, the technical solution adopted in the utility model is:

A kind of mud scraper torque-measuring apparatus is characterized in that: comprise valve disc spring guide and the bearing that is installed on the valve disc spring guide, bearing is provided with torsionspring outward;

Comprise limit switch and the cam that matches with limit switch, cam is connected with torsionspring by tooth bar;

Comprise digital display converter and Programmable Logic Controller, digital display converter converts digital signal to according to the electric signal of the variation generation of distance between cam and the limit switch, carries out remote transmission, sends simultaneously Programmable Logic Controller to.

The beneficial effects of the utility model are: in the mud scraper running, the numerical value that shows constantly moment of torsion reflects the state that revolution support type mud scraper turns round, simultaneously by in advance to the setting of torque value, when torque value is excessive, realize automatic alarm, stop machine operation, prevent that load is excessive, damage gear train.

Description of drawings:

Fig. 1 is the utility model schematic diagram.

Fig. 2 is the utility model Fig. 1 cam and limit switch partial enlarged drawing.

Among the figure: 1. be pad, 2. torsionspring, 3. valve disc spring guide, 4. bearing, 5. tooth bar, 6. spring, 7. cam, 8. limit switch, 9. digital display converter, 10. Programmable Logic Controller.

Embodiment:

By accompanying drawing 1 as can be known, the utility model comprises valve disc spring guide 3 and the bearing 4 that is installed on the valve disc spring guide 3, the bearing 4 outer torsionsprings 2 that are provided with; Also comprise limit switch 8 and the cam 7 that matches with limit switch 8, cam 7 is connected with torsionspring 2 by tooth bar 5; Also comprise digital display converter 9 and Programmable Logic Controller 10, digital display converter 9 converts digital signal to according to the electric signal of the variation generation of distance between cam 7 and the limit switch 8, carries out remote transmission, sends simultaneously Programmable Logic Controller 10 to.

Its principle of work is, in the utility model, bearing 4 is connected front end and is connected the mud scraper rake teeth with torsionspring.In rotation process, be subject to the resistance of rake teeth the place ahead slurries at revolution support type mud scraper rake teeth, make bearing in reduction gears 4 be subject to drag effect, produce torsional deflection, produce twisting resistance by the torsionspring 2 that is sleeved on the bearing 4, rotate by tooth bar 5 and spring 6 band moving cams 7, and the distance between the limit switch 8 changes, electric capacity changes thereupon, moment of torsion numeral display converter 9 converts the electric signal that capacitance variations produces to digital signal, remote transmission is to the pulpit, transmit signal to simultaneously Programmable Logic Controller 10, determine whether to reach the limit of the position.

Referring to accompanying drawing 2, position A is spacing for reporting to the police, and position B is that the limit is spacing.When cam 7 turns to position A shown in Fig. 2, the remote transmission signal in the pulpit caution report to the police, the prompting moment of torsion is excessive; When cam 7 turned to position B shown in Fig. 2, the remote transmission signal is powerful the warning in the pulpit, and stops machine operation by Programmable Logic Controller 10, protection reductor, protection motor.

Claims (1)

1. mud scraper torque-measuring apparatus is characterized in that: comprise the valve disc spring guide and be installed in bearing on the valve disc spring guide, bearing is provided with torsionspring outward;

Comprise limit switch and the cam that matches with limit switch, cam is connected with torsionspring by tooth bar;

Comprise digital display converter and Programmable Logic Controller, digital display converter converts digital signal to according to the electric signal of the variation generation of distance between cam and the limit switch, carries out remote transmission, sends simultaneously Programmable Logic Controller to.

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