Search

CN-122015748-A - Life detection device suitable for stay cord displacement sensor and application method thereof

CN122015748ACN 122015748 ACN122015748 ACN 122015748ACN-122015748-A

Abstract

The invention belongs to the technical field of displacement sensor detection, and particularly discloses a life detection device suitable for a pull rope displacement sensor and a use method thereof, wherein the life detection device comprises a machine table, a detection device and a detection device, wherein the machine table is provided with a mounting seat for temporarily fixing the detected pull rope displacement sensor; the screw rod sliding table is connected with the driving motor and driven by the driving motor to perform reciprocating linear motion; the device comprises a lead screw sliding table, a counter, a motor speed regulator, a limit sensor, a motor speed regulator, a driving motor, a counter and a motor speed regulator, wherein the moving direction of the lead screw sliding table corresponds to the pulling wire direction of a pulling wire displacement sensor, the lead screw sliding table is provided with a sliding block for connecting a pulling head of the pulling wire displacement sensor to be tested, the counter and the motor speed regulator are respectively in communication connection with the limit sensor, the two limit sensors are respectively arranged at two ends of a stroke of the lead screw sliding table, the limit sensor is used for detecting a position signal of the sliding block moving to a stroke end point, and transmitting the signal to the motor speed regulator to control the driving motor to change direction, and meanwhile, the signal is transmitted to the counter to record a moving period, so that the authenticity and reliability of test data are ensured.

Inventors

  • YUAN CHENG
  • WANG DONGFANG
  • ZHOU KENAN
  • WANG XINGJIE

Assignees

  • 湖北米朗科技股份有限公司

Dates

Publication Date
20260512
Application Date
20260213

Claims (10)

  1. 1. The life detection device suitable for the stay cord displacement sensor is characterized by comprising a machine table (2), a driving motor (3) arranged on the machine table (2), a screw rod sliding table (4), a limit sensor (5), a counter (6) and a motor speed regulator (7); the machine table (2) is provided with a mounting seat (201) for temporarily fixing the tested stay cord displacement sensor (1); The screw rod sliding table (4) is connected with the driving motor (3), and the screw rod sliding table (4) is driven by the driving motor (3) to perform reciprocating linear motion, wherein the motion direction of the screw rod sliding table (4) corresponds to the wire pulling direction of the stay wire displacement sensor (1); a sliding block for connecting a pull head of the tested stay cord displacement sensor (1) is arranged on the screw rod sliding table (4); The counter (6) and the motor speed regulator (7) are respectively in communication connection with the limit sensors (5), the two limit sensors (5) are respectively arranged at the two ends of the stroke of the screw rod sliding table (4), the limit sensors (5) are used for detecting position signals of the sliding block moving to the stroke end point and transmitting the signals to the motor speed regulator (7) to control the driving motor (3) to change the direction, and meanwhile, the signals are transmitted to the counter (6) to record the movement period.
  2. 2. The life detection device according to claim 1, wherein the mounting base (201) is in a rectangular groove structure, a notch of the mounting base is downwards arranged at the upper end of the machine table (2) and two side edges of the mounting base are fixedly connected with the machine table (2), a plurality of threaded holes are uniformly formed in the upper surface of the mounting base (201), and the threaded holes are used for being matched with a base matched with the pull rope displacement sensor (1) to fix the pull rope displacement sensor (1).
  3. 3. A life detection device according to claim 1 or 2, characterized in that the slider will trigger the two limit sensors (5) at the ends of the stroke one after the other in one complete reciprocation, which triggers the counter (6) to record a cumulative movement cycle.
  4. 4. A lifetime detection device according to claim 3, wherein the counter (6) comprises a main counting unit and a carry display unit, the main counting unit is used for recording single reciprocation periods, the carry display unit is used for recording accumulated lifetime data of an overscan, and the main counting unit is configured to automatically clear when the count value reaches a preset upper limit and synchronously send a carry signal to the carry display unit to enable the value of the carry display unit to be increased by one.
  5. 5. A lifetime detection device according to claim 3, characterized in that the lifetime detection device further comprises a control module (8) and a grating scale (9); the grating ruler (9) is arranged at the upper end of the machine table (2) and is parallel to the screw rod sliding table (4), and the moving end of the grating ruler moves synchronously with the sliding block and is used for measuring the absolute physical displacement value of the sliding block in real time; The control module (8) is arranged on the machine table (2) and is in communication connection with the stay cord displacement sensor (1), the counter (6), the motor speed regulator (7) and the grating ruler (9).
  6. 6. The life detection device according to claim 5, wherein the control module (8) is configured to synchronously collect the output signal of the pull-cord displacement sensor (1) and the displacement data of the grating ruler (9) and store a set of comparison data when any one of the limit sensors (5) is triggered.
  7. 7. The life detection device according to claim 6, wherein the control module (8) is configured to compare the output signal of the pull-cord displacement sensor (1) with the displacement data of the grating scale (9) in real time and calculate a linearity error, and record the current number of movement cycles and failure movement pattern when the linearity error exceeds a preset threshold.
  8. 8. The life detection device according to claim 7, wherein the control module (8) controls the driving motor (3) through the motor speed regulator (7) to execute a preset non-uniform motion mode, and the non-uniform motion mode at least comprises a slow pull fast return mode, a fast pull slow return mode or a sectional speed change mode so as to simulate an impact working condition when the wire is retracted.
  9. 9. The life detection device according to claim 8, wherein the sectional shift pattern includes an S-type motion pattern including seven motion stages in succession, which are an acceleration-adding stage, a uniform acceleration stage, a deceleration-accelerating stage, a uniform velocity stage, an acceleration-deceleration stage, a uniform deceleration stage, and a deceleration-deceleration stage, respectively.
  10. 10. A method for using a life detection device suitable for a pull rope displacement sensor, which is applied to the life detection device as claimed in any one of claims 1 to 9, and is characterized by comprising the following steps: S1, fixing a pull rope displacement sensor (1) to be detected on a mounting seat (201) on a machine table (2) through a base of the pull rope displacement sensor to be detected, and ensuring that the pull rope direction of the pull rope displacement sensor is aligned with a motion axis of a screw rod sliding table (4); S2, setting the running mode and the movement speed of the driving motor (3) through a motor speed regulator (7); S3, starting the driving motor (3) to drive the screw rod sliding table (4) to move along a linear direction, and enabling the sliding block to pull the steel wire rope of the stay cord displacement sensor (1) to realize pulling-out action, wherein when the sliding block triggers a limit sensor (5) at one end of a stroke, the limit sensor (5) sends a reversing signal to the motor speed regulator (7) to enable the driving motor (3) to reversely rotate, and when the sliding block reversely moves to the other end of the stroke and triggers a second limit sensor (5), the driving motor (3) reverses again to complete a complete movement period; s4, when the sliding block completes the complete reciprocating motion in the step S3, a counter (6) automatically accumulates a motion period and records the accumulated period number in real time; S5, stopping testing when a preset life cycle number is reached or a stay cord displacement sensor (1) fails; And S6, deriving the total cycle number and process data recorded by the counter (6), and repeating the steps S1 to S5 to perform a new test after replacing the stay cord displacement sensor (1).

Description

Life detection device suitable for stay cord displacement sensor and application method thereof Technical Field The invention belongs to the technical field of displacement sensor detection, and particularly relates to a life detection device suitable for a pull rope displacement sensor and a use method thereof. Background The pull rope displacement sensor is used as a displacement measuring device with wide application, plays an indispensable role in a plurality of important fields such as monitoring field, gate opening measurement, industrial machinery measurement control and the like, and the core working principle is that the accurate measurement of target displacement is realized by detecting the length of a pull-out steel wire rope, so that reliable data support is provided for operation monitoring and parameter regulation in each field. The whole structure of the stay cord displacement sensor mainly comprises a steel wire rope, an internal transmission mechanism and an electronic part, wherein the steel wire rope and the internal transmission mechanism are key core components for determining the working performance of the sensor, the structural stability, the abrasion degree and the matching precision of the steel wire rope and the internal transmission mechanism directly influence the service life, the measuring precision and the whole reliability of the stay cord displacement sensor, the stay cord displacement sensor is a basis for guaranteeing the long-term stable operation of the sensor, and the stay cord displacement sensor is an important research object for improving the product quality of the sensor in the industry. At present, aiming at the detection technology of a pull rope displacement sensor, the existing detection means in the industry has obvious limitation, the detection range is mainly concentrated on a single component, specifically, only the steel wire rope of the pull rope displacement sensor and independent parts such as a spring, a gear and the like in an internal transmission mechanism are respectively detected, and no comprehensive detection scheme aiming at the overall matching performance of key components is formed. In a specific detection implementation process, a main stream detection mode adopts a reel type structure, the structure drives a roller to rotate through a servo motor, a mode that the roller is wound around a wire-drawing steel wire rope is utilized, the stretching process of the steel wire rope is simulated, and then detection of related components is achieved. Meanwhile, special detection equipment for detecting single components such as a steel wire rope, a spring and a gear is independently designed and manufactured and corresponds to specific detection objects respectively, and therefore universality is poor. The prior art means has a plurality of defects, so that the actual detection requirement of the pull rope displacement sensor cannot be effectively met, accurate, efficient and low-cost detection of key parts of the sensor is difficult to realize, for example, the conventional detection means only detects a single part, the matching relation between a steel wire rope and an internal transmission mechanism is not considered, the matching precision of the steel wire rope and the internal transmission mechanism directly influences the overall performance of the sensor, the detection result cannot comprehensively reflect the actual working state of the sensor, and secondly, the special detection equipment of the single part has high cost, the detection flow is complex, the operation difficulty is high, the detection cost and the detection workload of enterprises are greatly increased, and the popularization and the application of the detection technology are not facilitated. Moreover, in the mainstream reel type detection structure, the detection mode that the roller is driven by the servo motor to wind the wire rope of the stay wire is inconsistent with the actual use situation of a user, the user mostly adopts a straight-pull type use mode in the actual application, but not the roller winding type use mode, so that the deviation between the detection process and the actual use condition exists, the accuracy of the detection result is not enough, and the performance of the sensor in the actual use cannot be truly reflected; in addition, in the reel type detection mode, the time required for retracting the stay wire steel wire rope from the fully stretched state to the initial position is long, so that the whole detection period is prolonged, the detection efficiency is low, and the quick detection requirement of a large number of sensors cannot be met. Disclosure of Invention Aiming at the defects or improvement demands of the prior art, the invention provides the service life detection device suitable for the stay cord displacement sensor and the application method thereof, and a set of automatic test device which highly simulates actual straight-pull