CN112629730A - Elbow testing device with running-in function - Google Patents

Abstract

The invention discloses an elbow testing device with a running-in function, which comprises a main control system unit, a detection unit, an analog load unit, a servo system unit and mounting brackets of all units, wherein the main control system unit is connected with the detection unit through a connecting rod; the master control system unit comprises a PLC, a touch screen and a power supply and distribution unit, the detection unit comprises an input end and an output end torque sensor, the analog load unit comprises a magnetic powder brake, and the servo system unit comprises a servo motor and a speed reducer; the input end torque sensor is connected with the servo motor, the output end torque sensor is connected with the magnetic powder brake, and the measured elbow is arranged between the two torque sensors. During testing, the tested elbow is arranged between the two torque sensors, the working mode is selected through the touch screen, working parameters are set, the torque of the elbow is measured, and whether the mechanical performance of the elbow is qualified or not can be judged. The invention has the running-in function, and can realize the running-in of the transmission mechanism in the new elbow only by prolonging the loading time in the set working parameters.

Description

Elbow testing device with running-in function

Technical Field

The invention belongs to the technical field of torque wrench testing devices, and particularly relates to a testing device for elbow performance of an elbow type electric torque wrench.

Background

The elbow type electric torque wrench is particularly suitable for operation in narrow space, and is widely applied to the fields of automobiles, trains and the like with higher requirements on bolt assembling and tightening torque precision. The most key part of the elbow type electric torque wrench is an elbow, the elbow mainly comprises a planetary gear set at the rear end and a spiral bevel gear at the front end, the bevel gear is used for realizing the conversion of the working direction of the elbow, and the mechanical property of the elbow has important influence on the overall performance and reliability of the whole elbow type electric torque wrench. Therefore, before the final assembly of the elbow type electric torque wrench, the mechanical performance test of the elbow is very necessary. But no special equipment for testing the mechanical performance of the elbow exists at present.

Disclosure of Invention

The invention aims to provide a device for testing the mechanical performance of an elbow in an elbow type electric torque wrench.

The technical scheme adopted by the invention is as follows: an elbow testing device with a running-in function is characterized by comprising a main control system unit, a detection unit, a simulation load unit, a servo system unit and mounting brackets of all units; the main control system unit comprises a PLC, a touch screen, a power supply and distribution unit, a switch, an indicator light and an alarm, the detection unit comprises an input end torque sensor and an output end torque sensor, the simulation load unit comprises a magnetic powder brake and a controller thereof, and the servo system unit comprises a servo driver, a servo motor and a speed reducer; the input end torque sensor is connected with a speed reducer driven by the servo motor through a drive end coupler, the output end torque sensor is connected with the magnetic powder brake through a load end coupler, the two torque sensors are located on the same axis, a measured elbow is installed between the two torque sensors, and the detection unit, the simulation load unit and the servo system unit are connected with the PLC.

Further, the support includes the cabinet body, the internal bottom plate of cabinet, riser and a plurality of backup pads of fixing on the bottom plate, magnetic powder brake fixes on the bottom plate, reduction gear and output end torque sensor install respectively in the backup pad to keep being located the same height with magnetic powder brake's output axis, PLC, power supply and distribution unit, magnetic powder brake controller and servo driver install on the riser.

Further, the touch screen, the switch, the alarm and the indicator lamp are arranged on the top plane of the cabinet body.

Furthermore, an adjustable ground foot is fixedly arranged below the bottom plate.

During testing, the front end and the rear end of the tested elbow are respectively connected with the output end torque sensor and the input end torque sensor, the working mode is selected through the touch screen, working parameters are set, the torque of the elbow is measured, and whether the mechanical performance of the elbow is qualified or not can be judged.

The invention can select a one-way one-time working mode, a single-stage working mode or a multi-stage working mode, then set working parameters including loading rotating speed, loading torque, loading time and loading limiting torque, and then start by one key, the detection work can be automatically completed, and the detection precision is high. The invention has the running-in function, can realize the running-in of the internal transmission mechanism of the new elbow only by prolonging the loading time in the set working parameters, and can carry out real-time detection on the torque of the elbow in the running-in process and test the mechanical property of the elbow.

Drawings

Fig. 1 is a schematic front structural view of the overall configuration of one embodiment of the present invention.

Fig. 2 is a schematic side view of the embodiment of fig. 1.

Fig. 3 is a schematic diagram of the back structure of the embodiment shown in fig. 1.

Fig. 4 is a schematic view of the cabinet of the embodiment shown in fig. 1.

Fig. 5 is a control schematic block diagram of the present invention.

Numbering names in the figures:

a master control system unit: 1-1 PLC, 1-2 touch screen, 1-3 power supply and distribution unit, 1-4 switch, 1-5 alarm, 1-6 indicator light;

a detection unit: 2-1, an input end torque sensor, 2-2, an output end torque sensor;

a simulation load unit: 3-1, a magnetic powder brake, 3-2, a magnetic powder brake controller, and 3-3, a load end coupler;

a servo system unit: 4-1, servo driver, 4-2, servo motor, 4-3, reducer, 4-4, drive end coupling;

5. 6, 7 support plates, 8 elbow connecting plates, 9 bottom plates, 10 vertical plates, 11 feet, 12 cabinets and 13 measured elbows.

Detailed Description

The invention will be further explained with reference to the drawings.

As shown in fig. 1 to 5, the present invention includes a main control system unit, a detection unit, a simulation load unit, a servo system unit, and a mounting bracket for each unit; the master control system unit comprises a PLC1-1, a touch screen 1-2, a power supply and distribution unit 1-3, a switch 1-4, an indicator lamp 1-6 and an alarm 1-5, the detection unit comprises an input end torque sensor 2-1 and an output end torque sensor 2-2, the analog load unit comprises a magnetic powder brake 3-1 and a magnetic powder brake controller 3-2, and the servo system unit comprises a servo driver 4-1, a servo motor 4-2 and a speed reducer 4-3. An input end torque sensor 2-1 is connected with a speed reducer 4-3 driven by a servo motor 4-2 through a drive end coupler 4-4 (shown in figure 1), an output end torque sensor 2-2 is connected with a magnetic powder brake 3-1 through a load end coupler 3-3 (shown in figure 2), the input end torque sensor 2-1 and the output end torque sensor 2-2 are located on the same axis, a measured elbow 13 is installed between the input end torque sensor 2-1 and the output end torque sensor 2-2 (shown in figure 1 and figure 2), and a detection unit, an analog load unit and a servo system unit are connected with a PLC1-1 (shown in figure 5). The power supply and distribution units 1-3 provide power for the whole system of the invention, and have protection functions such as overcurrent and the like; the switches 1-4 complete the system starting and stopping; the indicator lamps 1-6 complete corresponding indicating functions; the alarm 1-5 is used for alarming the abnormality of the equipment and prompting the shutdown; the PLC1-1 is combined with the touch screen 1-2 to mainly complete logic control, motion control, parameter setting, online monitoring and the like of the whole system.

In the present embodiment, the first and second electrodes are,

the support comprises a cabinet body 12, a bottom plate 9 in the cabinet body 12, a vertical plate 10 fixed on the bottom plate 9, a support plate 5, a support plate 7, an elbow connecting plate 8 and a support plate 6, as shown in figures 1 to 4;

the PLC1-1, the power supply and distribution unit 1-3, the magnetic powder brake controller 3-2 and the servo driver 4-1 are arranged on the vertical plate 10, and the magnetic powder brake 3-1 is fixed on the bottom plate 9, as shown in figure 3;

a servo motor 4-2, a speed reducer 4-3 and a driving end coupler 4-4 are sequentially connected through a shaft, the input end of an input end torque sensor 2-1 is connected with the driving end coupler 4-4 through a supporting plate 6, and the speed reducer 4-3 is installed at the upper end of a supporting plate 5, as shown in figure 1;

the output end torque sensor 2-2 is mounted on the support plate 7, as shown in fig. 2;

the servo motor 4-2, the speed reducer 4-3, the load end coupler 3-3, the drive end coupler 4-4 and the input end torque sensor 2-1 are mounted in a suspended mode through a support plate and keep the output axis of the magnetic powder brake 3-1 at the same height;

the touch screen 1-2, the switch 1-4, the alarm 1-5 and the indicator light 1-6 are arranged on the top plane of the cabinet body 12, as shown in fig. 4;

an adjustable foot 11 is fixedly installed below the bottom plate 9, as shown in fig. 4, the adjustable foot 11 is used for adjusting the levelness of the bottom plate 9.

The detection steps are as follows:

(1) the rear end, namely the input end, of the tested elbow 13 is connected with the input end torque sensor 2-1 through the elbow connecting plate 8, and the front end, namely the output end, of the tested elbow 13 is connected with the output end torque sensor 2-2.

(2) And starting up the computer, and selecting a working mode through the touch screen 1-2. The working modes are divided into a one-way one-time working mode, a single-stage working mode and a multi-stage working mode.

(3) And setting working parameters through the touch screen 1-2. The operating parameters include loading speed, loading torque, loading time and loading limit torque. The set working parameters are transmitted to the PLC1-1 through Ethernet communication, the PLC1-1 realizes motion control of the servo system unit through Modbus communication, and automatic control of the load size of the analog load unit is realized through the output analog voltage signal.

(4) And starting to operate, and carrying out elbow detection. During the period, the real-time curves of the set value and the actual value of the loading torque and the real-time curves of the set value and the actual value of the loading speed can be observed through the touch screen 1-2 on-line monitoring interface, the mechanical performance of the elbow to be detected can be evaluated according to the detected torque, and the quality problem can be traced. When abnormal conditions such as motor stalling occur in the running process, the alarm 1-5 can give an alarm to prompt shutdown. When the normal detection time reaches a set value, the device can be automatically stopped.

The invention has the running-in function, if the newly assembled elbow needs to be ground, the newly assembled elbow is arranged at the position of the tested elbow 13, then a one-way one-time working mode is selected, corresponding working parameters are set, wherein the loading time of the running-in is about 10 times longer than that in the detection, and then the running is started, so that the torque of the elbow can be detected in real time in the running-in process, and the mechanical property of the elbow can be tested.

Claims (4)

1. The utility model provides an elbow testing arrangement with break-in function which characterized in that: the device comprises a main control system unit, a detection unit, an analog load unit, a servo system unit and mounting brackets of all units; the main control system unit comprises a PLC, a touch screen, a power supply and distribution unit, a switch, an indicator light and an alarm, the detection unit comprises an input end torque sensor and an output end torque sensor, the simulation load unit comprises a magnetic powder brake and a controller thereof, and the servo system unit comprises a servo driver, a servo motor and a speed reducer; the input end torque sensor is connected with a speed reducer driven by a servo motor, the output end torque sensor is connected with a magnetic powder brake, the two torque sensors are located on the same axis, a measured elbow is installed between the two torque sensors, and the detection unit, the analog load unit and the servo system unit are connected with the PLC.

2. The elbow testing device with running-in function as claimed in claim 1, wherein: the support comprises a cabinet body, a bottom plate in the cabinet body, a vertical plate and a plurality of supporting plates, wherein the vertical plate and the supporting plates are fixed on the bottom plate, the magnetic powder brake is fixed on the bottom plate, the speed reducer and the output end torque sensor are respectively installed on the supporting plates and keep the output shaft of the magnetic powder brake at the same height, and the PLC, the power supply and distribution unit, the magnetic powder brake controller and the servo driver are installed on the vertical plate.

3. The elbow testing device with running-in function as claimed in claim 2, wherein: the touch screen, the switch, the alarm and the indicating lamp are arranged on the top plane of the cabinet body.

4. The elbow testing device with running-in function as claimed in claim 2, wherein: and an adjustable ground foot is fixedly arranged below the bottom plate.

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