Electric cylinder comprehensive tester

Abstract

The invention belongs to the technical field of electric cylinder torque testing, and particularly relates to an electric cylinder comprehensive tester which comprises an electric cylinder testing device, and the electric cylinder testing device comprises a base, an electric cylinder, an output shaft, a fixing seat, a first screw, a first ball nut and a sliding part. The sliding part comprises two sliding rails, a connecting plate, a sliding plate, two second screws, two second ball nuts, a motor and a belt wheel, the motor is fixedly installed on the left side of the base and connected with the two second screws through the belt wheel, the two sliding rails are both fixedly installed above the base and are oppositely arranged, and the sliding plate is connected with the two second screws through the belt wheel. The sliding plate is connected to the two sliding rails in a sliding mode, the right side of the sliding plate is fixed to the connecting plate, the two second ball nuts are fixedly installed on the front side and the rear side of the connecting plate respectively, and the problem that when the torque of an electric cylinder is tested at present, the precision of test data is seriously affected due to the influences of lubricating liquid, temperature and resistance is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of electric cylinder torque testing, and in particular relates to an electric cylinder comprehensive tester. Background Art

[0002] The electric cylinder drives the screw to rotate through the motor, and uses the spiral motion of the screw and the nut to convert the rotational motion into linear motion. The electric cylinder needs to be tested for its performance before use, including the torque test of the electric cylinder. The main purpose of the electric cylinder torque test is to ensure the normal operation of the equipment, improve production efficiency and product quality. Through torque detection, the torque data output by the electric cylinder can be ensured to be accurate, avoiding equipment damage, efficiency reduction and accidents caused by inaccurate torque data, and ensuring the normal operation of the equipment. A comprehensive tester is usually used for torque testing; At present, the test accuracy of the electric cylinder torque tester cannot be guaranteed, and the accuracy of the test data is seriously affected by the influence of lubricating fluid, temperature and resistance. This phenomenon has become a problem that needs to be solved urgently by people in this field. Summary of the invention

[0003] The purpose of the present invention is to provide an electric cylinder comprehensive tester to solve the problems raised in the above background technology.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: an electric cylinder comprehensive tester, comprising an electric cylinder test device, the electric cylinder test device comprising a base, an electric cylinder, an output shaft, a fixing seat, a screw rod 1, a ball nut 1 and a sliding part; the sliding part comprises two slide rails, a connecting plate, a sliding plate, two screw rods 2, two ball nuts 2, a motor and a pulley, the motor is fixedly installed on the left side of the base, the motor is connected to the two screw rods 2 through a pulley, the two slide rails are fixedly installed above the base and are arranged relatively, The slide plate is slidably connected to the two slide rails, and the right side is fixed to the connecting plate. The two ball nuts 2 are respectively fixedly installed on the front and rear sides of the connecting plate, and are respectively sleeved on the outside of the two screw rods 2. The ball nut 1 is fixedly installed on the right side of the connecting plate and sleeved on the outside of the screw rod 1. The output shaft is inserted into the fixing seat, and the two ends are respectively fixedly connected to the screw rod 1 and the output end of the electric cylinder. A torque sensor is sleeved on the outside of the output shaft. The torque sensor is used to measure the rotational torque of the output shaft, thereby judging the torque size of the electric cylinder.

[0005] The present invention further illustrates that a torque precision measurement system is arranged inside the torque sensor, and the torque precision measurement system includes an accuracy compensation module, a data measurement module and a data feedback module; the accuracy compensation module is electrically connected to the data measurement module, and the data measurement module is electrically connected to the data feedback module, the accuracy compensation module is used to perform data compensation on the test data of the torque sensor through various factors, the data measurement module is used to add the test data and the compensated data to obtain the final test data, and the data feedback module is used to feed back the final data to the operator.

[0006] The present invention further illustrates that the accuracy compensation module includes a temperature identification unit, a lubricating fluid viscosity unit and an alarm unit, the temperature identification unit is electrically connected to the lubricating fluid viscosity unit, the lubricating fluid viscosity unit is electrically connected to the alarm unit, the alarm unit is electrically connected to the data feedback module, the temperature identification unit is used to identify the temperature in the torque sensor, the lubricating fluid viscosity unit is used to detect the lubricating fluid viscosity on the output shaft, and the alarm unit is used to transmit an alarm signal to the data feedback module through the measured lubricating fluid viscosity, and feed back to the operator through the data feedback module.

[0007] The present invention further illustrates that the operation steps of the torque precision measurement system include: step S1, the torque sensor is running, and the torque precision measurement system is started; step S2, the temperature in the torque sensor is identified by the temperature identification unit, and the temperature change causes the resistance of the torque sensor to change, so that the accuracy of the torque sensor is compensated once according to the resistance change; step S3, the lubricating fluid viscosity is measured by the lubricating fluid viscosity unit, and the lubricating fluid viscosity changes so that the torque data changes, and the accuracy of the torque sensor is compensated twice. When the lubricating fluid viscosity is higher than the set value and the temperature is in a normal state, step S4 is entered, otherwise step S6 is entered; step S4, at this time, there are a lot of impurities in the lubricating fluid, the value of the resistance is increased, and the resistance data in step S2 is adjusted, so that the accuracy of the torque sensor is compensated three times; step S5, after the current test of the electric cylinder is completed, the alarm signal is transmitted to the data feedback module through the alarm unit; step S6, the measured torque final data and the alarm signal are fed back to the operator through the data feedback module.

[0008] The present invention further illustrates that in step S2, the torque data of the torque sensor after one compensation is measured: the higher the temperature, the greater the resistance of the metal resistance strain gauge inside the torque sensor, and the torque data is compensated, and the compensation data is , the data measured by the torque sensor is ;Right now , It is the torque data after primary compensation measured by the torque sensor.

[0009] The present invention further illustrates that in step S3, the torque data of the torque sensor after secondary compensation is measured: , The data for the effect of lubricant viscosity on torque is: This is the maximum effect of lubricant viscosity on torque. is the viscosity of the lubricating fluid, is the maximum viscosity of the lubricating fluid; , It is the torque data after secondary compensation measured by the torque sensor.

[0010] The present invention further illustrates that in the steps S3 and S4, the torque data of the torque sensor after three compensations is measured: , and the temperature inside the torque sensor remains normal, To achieve normal lubricant viscosity: adjust the resistance data of the metal resistance strain gauge inside the torque sensor affected by temperature, , The resistance data of the metal resistance strain gauge inside the torque sensor affected by temperature, The resistance data increased by the viscosity of the lubricating fluid. is the resistance data of the metal resistance strain gauge inside the torque sensor after adjustment; , The torque compensation data of the metal resistance strain gauge inside the torque sensor after adjustment. It is the torque data after three compensations measured by the torque sensor; , and the temperature inside the torque sensor remains normal: .

[0011] The present invention further illustrates that in step S3 and step S5, the operator is prompted by the alarm unit: , and the temperature inside the torque sensor remains normal: an alarm is issued; when , and the temperature inside the torque sensor remains normal: no alarm is issued.

[0012] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the torque precision measurement system adopted by the present invention judges the temperature inside the torque sensor and the change of the sensor resistance, and compensates the torque sensor precision. The measured torque data is added with the compensated torque data, so as to improve the precision of the final torque data measured by the torque sensor and improve the test quality. Meanwhile, the more viscous the lubricating fluid is, the greater the torque is, and the smaller the measured torque data is. The torque sensor data is compensated twice, and the precision of the tested torque data is further improved by the lubricating fluid viscosity factor, so as to further improve the test quality. When the viscosity of the lubricating fluid is high and the temperature is normal, it means that there are a lot of impurities in the lubricating fluid during the lubrication process, which causes the resistance value to increase, so the resistance data is adjusted, and the torque data after one compensation is further refined, so as to obtain the final torque data after three compensations. By further refining the resistance data, the torque test accuracy is greatly improved. At the same time, an alarm is issued after one test to remind the operator, so that the operator knows that the impurity content of the lubricating fluid on the output shaft is too high, so that the lubricating fluid can be cleared, re-lubricated, and maintained, so as to improve the test quality and test efficiency, and avoid the large resistance between the output shaft and the torque sensor affecting the test data accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 is a plan view of the present invention; Figure 3 It is a schematic diagram of the module connection relationship of the torque precision measurement system of the present invention; In the figure: 1, base; 2, output shaft; 3, fixed seat; 4, screw rod 1; 5, ball nut 1; 6, slide rail; 7, connecting plate; 71, slide plate; 72, screw rod 2; 73, ball nut 2; 74, motor; 75, pulley; 8, torque sensor. DETAILED DESCRIPTION

[0014] The following is a further non-limiting detailed description of the technical solution of the present invention in conjunction with the preferred embodiments and the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0015] See also Figure 1-Figure 3 , the present invention provides a technical solution: an electric cylinder comprehensive tester, including an electric cylinder test device, the electric cylinder test device includes a base 1, an electric cylinder, an output shaft 2, a fixing seat 3, a screw rod 4, a ball nut 5 and a sliding part; The sliding part includes two slide rails 6, a connecting plate 7, a slide plate 71, two screw rods 72, two ball nuts 73, a motor 74 and a pulley 75. The motor 74 is fixedly installed on the left side of the base 1. The motor 74 is connected to the two screw rods 72 through the pulley 75. The two slide rails 6 are fixedly installed on the top of the base 1 and are arranged relatively. The slide plate 71 is slidably connected to the two slide rails 6, and the right side is fixed to the connecting plate 7. The two ball nuts 73 are fixedly installed on the front and rear sides of the connecting plate 7, and are respectively sleeved on the outside of the two screw rods 72. The ball nut 15 is fixedly installed on the right side of the connecting plate 7 and sleeved on the outside of the screw rod 14. The output shaft 2 is inserted into the fixed seat 3, and the two ends are fixedly connected to the screw rod 14 and the output end of the electric cylinder respectively. The outer side of the output shaft 2 is sleeved with a torque sensor 8, which is used to measure the rotation torque of the output shaft 2, thereby judging the torque size of the electric cylinder. After the electric cylinder is connected to the output shaft 2, the motor 74 is started. The motor 74 drives the two screw rods 2 72 to rotate synchronously through the pulley 75. The screw rod 2 72 drives the ball nut 2 73 to move. The ball nut 2 73 drives the slide plate 71 to slide on the two slide rails 6 through the connecting plate 7. The connecting plate 7 drives the ball nut 1 5 to move. The ball nut 1 5 moves on the screw rod 1 4, thereby driving the screw rod 1 4 to rotate. The screw rod 1 4 drives the output shaft 2 to rotate. When the output shaft 2 rotates, the torque is sensed by the torque sensor 8, thereby identifying the torque size of the electric cylinder. The test is automated, the test efficiency is greatly improved, and the test accuracy is high, which can ensure the test quality.

[0016] The torque sensor 8 is internally provided with a torque precision measurement system, which includes an accuracy compensation module, a data measurement module and a data feedback module; The precision compensation module is electrically connected to the data measurement module, which is electrically connected to the data feedback module. The precision compensation module is used to perform data compensation on the test data of the torque sensor 8 through various factors. The data measurement module is used to add the test data and the compensated data to obtain the final test data. The data feedback module is used to feed back the final data to the operator.

[0017] The accuracy compensation module includes a temperature identification unit, a lubricating fluid viscosity unit and an alarm unit. The temperature identification unit is electrically connected to the lubricating fluid viscosity unit, the lubricating fluid viscosity unit is electrically connected to the alarm unit, and the alarm unit is electrically connected to the data feedback module. The temperature identification unit is used to identify the temperature in the torque sensor 8, the lubricating fluid viscosity unit is used to detect the viscosity of the lubricating fluid on the output shaft 2, and the alarm unit is used to transmit an alarm signal to the data feedback module through the measured lubricating fluid viscosity, and feed it back to the operator through the data feedback module.

[0018] The operation steps of the torque precision measurement system include: Step S1, the torque sensor 8 is running and the torque precision measurement system is started; Step S2, identifying the temperature inside the torque sensor 8 by the temperature identification unit. The temperature change causes the resistance of the torque sensor 8 to change, so that the accuracy of the torque sensor 8 is compensated according to the resistance change; Step S3, measuring the viscosity of the lubricating fluid by the lubricating fluid viscosity unit, the change of the lubricating fluid viscosity causes the change of the torque data, and the accuracy of the torque sensor 8 is compensated twice. When the viscosity of the lubricating fluid is higher than the set value and the temperature is in a normal state, the process goes to step S4, otherwise, the process goes to step S6; Step S4, at this time, there are a lot of impurities in the lubricating fluid, the value of the resistance is increased, and the resistance data in step S2 is adjusted, so as to compensate the accuracy of the torque sensor 8 three times; Step S5: after the current electric cylinder is tested, an alarm signal is transmitted to the data feedback module through the alarm unit; Step S6: Feedback the measured final torque data and the alarm signal to the operator through the data feedback module.

[0019] In step S2, the torque data of the torque sensor 8 after primary compensation is measured: The higher the temperature, the greater the resistance of the metal resistance strain gauge inside the torque sensor 8, and the torque data is compensated. The compensation data is , the data measured by the torque sensor 8 is ; Right now , The torque data after primary compensation measured by the torque sensor 8; The temperature changes the resistance of the sensor, which compensates for the accuracy of the torque sensor. The measured torque data is added with the compensated torque data, thereby improving the accuracy of the final torque data measured by the torque sensor 8 and improving the test quality.

[0020] In step S3, the torque data of the torque sensor 8 after secondary compensation is measured: , The data for the effect of lubricant viscosity on torque is: This is the maximum effect of lubricant viscosity on torque. is the viscosity of the lubricating fluid, is the maximum viscosity of the lubricating fluid; Right now , is the torque data after secondary compensation measured by the torque sensor 8; The more viscous the lubricant is, the greater the torque is, and the smaller the measured torque data is. The data of the torque sensor 8 is compensated twice, and the accuracy of the tested torque data is further improved by the lubricant viscosity factor, thereby further improving the test quality.

[0021] In step S3 and step S4, the torque data of the torque sensor 8 after three compensations are measured: when , and the temperature inside the torque sensor 8 remains normal, For normal lubricant viscosity: adjust the resistance data of the metal resistance strain gauge inside the torque sensor 8 affected by temperature, , is the resistance data of the metal resistance strain gauge inside the torque sensor 8 affected by temperature, The resistance data increased by the viscosity of the lubricating fluid. is the resistance data of the metal resistance strain gauge inside the torque sensor 8 after adjustment; Right now , The torque compensation data of the resistance data of the metal resistance strain gauge inside the torque sensor 8 after adjustment, The torque data after three compensations measured by the torque sensor 8; when , and the temperature inside the torque sensor 8 remains normal: ; When the viscosity of the lubricating fluid is high and the temperature is normal, it means that there are a lot of impurities inside the lubricating fluid during the lubrication process, which causes the resistance value to increase. The resistance data is adjusted to further refine the torque data after the first compensation, thereby obtaining the final torque data after three compensations. By further refining the resistance data, the torque test accuracy is greatly improved.

[0022] In step S3 and step S5, the operator is prompted by the alarm unit: when , and the temperature in the torque sensor 8 remains normal: an alarm is issued; when , and the temperature in the torque sensor 8 remains normal: no alarm is issued; When the viscosity of the lubricating fluid is high and the temperature remains normal, an alarm will be sounded after one test to remind the operator, so that the operator knows that the lubricating fluid on the output shaft 2 contains too many impurities, so that the lubricating fluid can be cleared, re-lubricated, and maintained, which is convenient for improving the test quality and test efficiency and avoiding the large resistance between the output shaft 2 and the torque sensor 8 affecting the accuracy of the test data.

[0023] In the description of the present invention, it is necessary to understand that the terms "up", "down", "front", "back", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0024] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents, and these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. Electric cylinder comprehensive tester, including electric cylinder test device, characterized in that: The electric cylinder testing device comprises a base (1), an electric cylinder, an output shaft (2), a fixing seat (3), a screw rod (4), a ball nut (5) and a sliding part; The sliding part comprises two slide rails (6), a connecting plate (7), a slide plate (71), two screw rods (72), two ball nuts (73), a motor (74) and a pulley (75). The motor (74) is fixedly mounted on the left side of the base (1). The motor (74) is connected to the two screw rods (72) via the pulley (75). The two slide rails (6) are fixedly mounted above the base (1) and are arranged opposite to each other. The slide plate (71) is slidably connected to the two slide rails (6) and the right side is fixed to the connecting plate (7). The two ball nuts (73) are fixedly mounted on the front and rear sides of the connecting plate (7) and are respectively The ball nut (5) is fixedly mounted on the right side of the connecting plate (7) and is sleeved on the outer side of the screw (4). The output shaft (2) is inserted into the fixing seat (3), and the two ends are respectively fixedly connected to the screw (4) and the output end of the electric cylinder. The outer side of the output shaft (2) is sleeved with a torque sensor (8). The torque sensor (8) is used to measure the rotation torque of the output shaft (2), so as to determine the torque size of the electric cylinder. The torque sensor (8) is provided with a torque precision measurement system inside. The torque precision measurement system includes an accuracy compensation module, a data measurement module and a data feedback module. The precision compensation module is electrically connected to the data measurement module, which is electrically connected to the data feedback module. The precision compensation module is used to perform data compensation on the test data of the torque sensor (8) by various factors. The data measurement module is used to add the test data and the compensated data to obtain final test data. The data feedback module is used to feed back the final data to an operator. The precision compensation module includes a temperature identification unit, a lubricating fluid viscosity unit and an alarm unit. The temperature identification unit is electrically connected to the lubricating fluid viscosity unit. The lubricating fluid viscosity unit is electrically connected to the alarm unit. The alarm unit is electrically connected to the data feedback module. The temperature identification unit is used to identify the temperature in the torque sensor (8). The lubricating fluid viscosity unit is used to detect the viscosity of the lubricating fluid on the output shaft (2). The alarm unit is used to transmit an alarm signal to the data feedback module based on the measured lubricating fluid viscosity, and feed back the alarm signal to the operator through the data feedback module.

2. The electric cylinder comprehensive tester according to claim 1 is characterized in that: The operation steps of the torque precision measurement system include: Step S1, the torque sensor (8) is running and the torque precision measurement system is started; Step S2, identifying the temperature inside the torque sensor (8) by a temperature identification unit, whereby the temperature change causes the resistance of the torque sensor (8) to change, thereby compensating the accuracy of the torque sensor (8) based on the resistance change; Step S3, measuring the viscosity of the lubricating fluid by means of a lubricating fluid viscosity unit, and causing the torque data to change as the viscosity of the lubricating fluid changes, and performing secondary compensation on the accuracy of the torque sensor (8), and when the viscosity of the lubricating fluid is higher than the set value and the temperature is in a normal state, proceeding to step S4, otherwise proceeding to step S6; Step S4, at this time, there are a lot of impurities in the lubricating fluid, the value of the resistance is increased, and the resistance data in step S2 is adjusted, so as to compensate the accuracy of the torque sensor (8) three times; Step S5: after the current electric cylinder is tested, an alarm signal is transmitted to the data feedback module through the alarm unit; Step S6: Feedback the measured final torque data and the alarm signal to the operator through the data feedback module.

3. The electric cylinder comprehensive tester according to claim 2 is characterized in that: In step S2, the torque data of the torque sensor (8) after primary compensation is measured: The higher the temperature, the greater the resistance of the metal resistance strain gauge inside the torque sensor (8), and the torque data is compensated. The compensation data is , the data measured by the torque sensor (8) is ; Right now , It is the torque data after the primary compensation measured by the torque sensor (8).

4. The electric cylinder comprehensive tester according to claim 3 is characterized in that: In step S3, the torque data of the torque sensor (8) after secondary compensation is measured: , The data for the effect of lubricant viscosity on torque is: This is the maximum effect of lubricant viscosity on torque. is the viscosity of the lubricating fluid, is the maximum viscosity of the lubricating fluid; Right now , It is the torque data after secondary compensation measured by the torque sensor (8).

5. The electric cylinder comprehensive tester according to claim 4 is characterized in that: In step S3 and step S4, the torque data of the torque sensor (8) after three compensations is measured: when , and the temperature inside the torque sensor (8) remains normal, To achieve normal lubricant viscosity: adjust the resistance data of the metal resistance strain gauge inside the torque sensor (8) affected by temperature. , is the resistance data of the metal resistance strain gauge inside the torque sensor (8) affected by temperature, The resistance data increased by the viscosity of the lubricating fluid. is the resistance data of the metal resistance strain gauge inside the torque sensor (8) after adjustment; Right now , The torque compensation data of the resistance data of the metal resistance strain gauge inside the torque sensor (8) after adjustment, The torque data after three-time compensation measured by the torque sensor (8); when , and the temperature inside the torque sensor (8) remains normal: .

6. The electric cylinder comprehensive tester according to claim 5 is characterized in that: In step S3 and step S5, the operator is prompted by the alarm unit: when , and the temperature in the torque sensor (8) remains normal: an alarm is sounded; when , and the temperature inside the torque sensor (8) remains normal: no alarm is issued.

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