A device and method for detecting the resilience of steel cord

Abstract

The present invention discloses a device and a detection method for detecting the resilience of a steel cord, comprising an upper crossbeam and a lower crossbeam, wherein the two ends of the upper crossbeam and the lower crossbeam are fixedly connected by a column, a support foot is fixedly installed at the bottom of the column, the upper crossbeam has a steel cord fixed end mounting portion and two steel cord free end mounting portions, a sensor is fixedly installed on the lower crossbeam, and an angle exists between the straight line where the sensor and the steel cord fixed end mounting portion are located and the vertical plane, and 0 < angle < 5 degrees. By installing one end of the steel cord on the upper crossbeam and the other end being freely released from a fixed point, a single pendulum motion is formed, and at the same time, with the help of a sensor, when the steel cord passes through the sensor, a signal is triggered, and by recording the time point of free release and the last trigger signal, the difference between the two time points is used to evaluate the resilience of the steel cord, and the timing can be automatically performed and a judgment result can be given, which has the advantages of low cost, portability, easy operation, accurate measurement, and high degree of automation.

Description

Technical Field

[0001] The invention relates to an automated detection technology for the resilience of a steel cord, and in particular to a device and a detection method for detecting the resilience of a steel cord. Background Art

[0002] In the prior art, the steel cord is measured for the bulging condition of the multi-layer structure through a bulging instrument, but it has the disadvantages of long sampling time, complicated steps, high device cost, consumables, large human error in measurement, etc., making it difficult to achieve automated determination. Summary of the invention

[0003] In view of the problems existing in the prior art, the present invention proposes a device and a detection method for detecting the resilience of a steel cord. One end of the steel cord is installed on an upper crossbeam, and the other end is freely released from a fixed point to form a simple pendulum motion. At the same time, with the help of a sensor, a signal is triggered when the steel cord passes through the sensor. By recording the time points of the free release and the last trigger signal, the difference between the two time points is used to evaluate the resilience of the steel cord. The device can automatically time and give a judgment result. The device has the advantages of low cost, portability, easy operation, accurate measurement and high degree of automation.

[0004] The technical solution adopted by the present invention is: a device for detecting the resilience of a steel cord, comprising an upper crossbeam and a lower crossbeam, wherein the two ends of the upper crossbeam and the lower crossbeam are fixedly connected by a column, a supporting foot is fixedly installed at the bottom of the column, the upper crossbeam is provided with a steel cord fixed end mounting portion and two steel cord free end mounting portions, a sensor is fixedly installed on the lower crossbeam, and an angle exists between the straight line where the sensor and the steel cord fixed end mounting portion are located and the vertical plane, wherein 0 < angle < 5 degrees.

[0005] On the basis of the above solution, preferably, a controller electrically connected to the sensor and a three-color light electrically connected to the controller are installed on the upper crossbeam.

[0006] On the basis of the above solution, preferably, the steel cord free end mounting portion is a magnetic adsorption device.

[0007] A method for detecting the resilience of a steel cord, comprising:

[0008] (1) Fix one end of the steel cord to the steel cord fixed installation part, and fix the other end to the steel cord free end installation part on the left. Release the free end of the steel cord from the steel cord free end installation part and record the falling time point. The steel cord performs a single pendulum motion under the action of gravity. When the steel cord swings past the sensor for the last time, record the end time point. The swing time T1 is calculated based on the difference between the end time point and the falling time point.

[0009] (2) Fix one end of the steel cord to the steel cord fixing installation part, and fix the other end to the steel cord free end installation part on the right side. Release the free end of the steel cord from the steel cord free end installation part and record the falling time point. The steel cord performs a single pendulum motion under the action of gravity. When the steel cord swings past the sensor for the last time, record the end time point. The swing time T2 is calculated based on the difference between the end time point and the falling time point.

[0010] (3) Repeat steps (1) and (2) to obtain swings T3 and T4;

[0011] (4) The COT value of the steel cord is obtained by the average of the four measured values: COT = (T1 + T2 + T3 + T4) / 4.

[0012] On the basis of the above scheme, preferably, the steel cord fixing and mounting portion is a first hole and a second hole arranged on the upper cross beam, the axial direction of the first hole is vertical, the axial direction of the second hole is perpendicular to the axial direction of the first hole and the second hole is connected to the first hole, and the locking bolt passes through the second hole to fix the steel cord in the first hole.

[0013] On the basis of the above scheme, as a preference, the free end mounting portion of the steel cord is a third hole and a fourth hole arranged on the upper cross beam and a magnetic adsorption device installed on the upper cross beam, and the third hole and the fourth hole are symmetrically installed on both sides of the first hole, and the magnetic adsorption device adsorbs the steel cord in the third hole or the fourth hole.

[0014] On the basis of the above solution, preferably, the magnetic adsorption device is an electromagnetic chuck.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] By installing one end of the steel cord on the upper beam and releasing the other end freely from a fixed point, a simple pendulum motion is formed. At the same time, with the help of a sensor, when the steel cord passes through the sensor, a signal is triggered. By recording the time of free release and the last trigger signal, the difference between the two time points is used to evaluate the resilience of the steel cord. It can automatically time and give a judgment result. It has the advantages of low cost, portability, easy operation, accurate measurement and high degree of automation.

[0017] Among them, there is an angle between the straight line where the sensor and the steel cord fixed end installation part are located and the vertical plane, 0 < angle < 5 degrees. This design will no longer trigger the signal in the later stage of the steel cord swing due to the small swing amplitude, thereby shortening the measurement time and improving the measurement efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention. DETAILED DESCRIPTION

[0019] The present invention will be further described below by way of examples, but the scope of the present invention is not limited thereto.

[0020] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0021] like Figure 1 As shown, a device for detecting the resilience of a steel cord comprises an upper crossbeam 1 and a lower crossbeam 2, wherein both ends of the upper crossbeam and the lower crossbeam are fixedly connected by a column 3, a supporting foot 4 is fixedly installed at the bottom of the column, a steel cord fixed end mounting portion 5 and two steel cord free end mounting portions 6 are provided on the upper crossbeam, a sensor 8 (photoelectric sensor, proximity switch, etc.) is fixedly installed on the lower crossbeam, and an angle exists between the straight line where the sensor and the steel cord fixed end mounting portion are located and the vertical plane, and the angle is 0 < angle < 5 degrees.

[0022] Two steel cord free end mounting parts 6 are taken as a group, and multiple groups can be arranged in the length direction of the upper cross beam for testing multiple structures and different distances.

[0023] By installing one end of the steel cord 9 on the upper beam and the other end being freely released from a fixed point, a simple pendulum motion is formed. At the same time, with the help of a sensor, when the steel cord passes through the sensor, a signal is triggered. By recording the time points of free release and the last trigger signal, the difference between the two time points is used to evaluate the resilience of the steel cord. It can automatically time and give a judgment result. It has the advantages of low cost, portability, easy operation, accurate measurement, and a high degree of automation.

[0024] Among them, there is an angle between the straight line where the sensor and the steel cord fixed end installation part are located and the vertical plane, 0 < angle < 5 degrees. This design will no longer trigger the signal in the later stage of the steel cord swing due to the small swing amplitude, thereby shortening the measurement time and improving the measurement efficiency.

[0025] A controller electrically connected to the sensor and a three-color lamp 7 electrically connected to the controller are installed on the upper crossbeam.

[0026] The installation part of the free end of the steel cord is a magnetic adsorption device, which is an electromagnetic suction cup and can be adsorbed with power on or without power off.

[0027] A method for detecting the resilience of a steel cord, comprising:

[0028] (1) Fix one end of the steel cord to the steel cord fixed installation part, and fix the other end to the steel cord free end installation part on the left. Release the free end of the steel cord from the steel cord free end installation part and record the falling time point. The steel cord performs a single pendulum motion under the action of gravity. When the steel cord swings past the sensor for the last time, record the end time point. The swing time T1 is calculated based on the difference between the end time point and the falling time point.

[0029] (2) Fix one end of the steel cord to the steel cord fixing installation part, and fix the other end to the steel cord free end installation part on the right side. Release the free end of the steel cord from the steel cord free end installation part and record the falling time point. The steel cord performs a single pendulum motion under the action of gravity. When the steel cord swings past the sensor for the last time, record the end time point. The swing time T2 is calculated based on the difference between the end time point and the falling time point.

[0030] (3) Repeat steps (1) and (2) to obtain swings T3 and T4;

[0031] (4) The COT value of the steel cord is obtained by the average of the four measured values: COT = (T1 + T2 + T3 + T4) / 4.

[0032] Among them, the steel cord fixing and installation part is a first hole and a second hole arranged on the upper cross beam, the axial direction of the first hole is vertical, the axial direction of the second hole is perpendicular to the axial direction of the first hole and the second hole is connected to the first hole, and the locking bolt passes through the second hole to fix the steel cord in the first hole.

[0033] The free end mounting part of the steel cord is a third hole and a fourth hole arranged on the upper crossbeam and a magnetic adsorption device installed on the upper crossbeam. The third hole and the fourth hole are symmetrically installed on both sides of the first hole. The magnetic adsorption device adsorbs the steel cord in the third hole or the fourth hole.

[0034] More specifically, use powered adsorption to remove a section of steel cord of approximately 2m from the take-up wheel, carefully check that the steel cord has no signs of irregularity and can represent this batch, and use a steel cord fuse to fuse a sample of approximately 50cm in the middle of this section of cord. If it is an outer-wrapped steel cord, the outer-wrapped wire should be removed to ensure that all the steel wires that make up the steel cord are welded to the welding points.

[0035] Place the measuring device on a table or horizontal surface, insert the sample into the first hole of the upper beam, keep the bottom end of the steel cord sample at a small distance from the horizontal, then clamp the steel cord with a locking bolt, insert the free end of the sample into the third hole, power on the electromagnetic chuck, adsorb the free end in the third hole, power off the electromagnetic chuck, transmit the signal to the controller, the controller automatically obtains the time point of the falling signal, the steel cord performs a single pendulum motion, and each time the steel cord moves to the photoelectric sensor, a signal is triggered, and the controller records the time point and calculates the time between two adjacent time points. Difference. When a certain difference is reached and the signal is not triggered again after the difference time is exceeded, the time point after the difference is recorded as the termination time point. The controller calculates the difference between the termination time point and the falling time point to obtain the swing time T1. The swing time (T1) is recorded and the recorded value is rounded to 1 / 10 second. The steel cord is inserted into another hole on the side rod, and the operation is repeated (T2). The measurement is repeated once (T3, T4). The COT value of the steel cord is obtained by the average of the four measured values: COT=(T1+T2+T3+T4) / 4.

[0036] Among them, when the swing time is greater than the preset value, the three-color light shows green, indicating qualified. During the measurement process, the three-color light shows yellow, indicating that it is working. When the swing time is less than the preset value, the three-color light shows red, indicating unqualified.

[0037] It should be noted that the embodiments described above are only used to explain the present invention and do not constitute any limitation to the present invention. The present invention has been described with reference to typical embodiments, but it should be understood that the words used therein are descriptive and explanatory words, rather than restrictive words. The present invention may be modified as specified within the scope of the claims of the present invention, and the present invention may be revised without departing from the scope and spirit of the present invention. Although the present invention described therein relates to specific methods, materials and embodiments, it does not mean that the present invention is limited to the specific examples disclosed therein, on the contrary, the present invention can be extended to all other methods and applications with the same functions.

Claims

1. A method for detecting the resilience of a steel cord, characterized in that: It includes an upper crossbeam and a lower crossbeam. The two ends of the upper crossbeam and the lower crossbeam are fixedly connected by a column. A support foot is fixedly installed at the bottom of the column. The upper crossbeam has a steel cord fixed end mounting portion and two steel cord free end mounting portions. The lower crossbeam is fixedly installed with a sensor. There is an angle between the straight line where the sensor and the steel cord fixed end mounting portion are located and the vertical plane, 0 < angle < 5 degrees. Resilience testing methods, including: (1) Fix one end of the steel cord to the steel cord fixed installation part, and fix the other end to the steel cord free end installation part on the left. Release the free end of the steel cord from the steel cord free end installation part and record the falling time point. The steel cord performs a single pendulum motion under the action of gravity. When the steel cord swings past the sensor for the last time, record the end time point. The swing time T1 is calculated based on the difference between the end time point and the falling time point. (2) Fix one end of the steel cord to the steel cord fixing installation part, and fix the other end to the steel cord free end installation part on the right side. Release the free end of the steel cord from the steel cord free end installation part and record the falling time point. The steel cord performs a single pendulum motion under the action of gravity. When the steel cord swings past the sensor for the last time, record the end time point. The swing time T2 is calculated based on the difference between the end time point and the falling time point. (3) Repeat steps (1) and (2) to obtain swings T3 and T4; (4) The COT value of the steel cord is obtained by the average of the four measured values: COT = (T1 + T2 + T3 + T4) / 4.

2. The steel cord resilience detection method according to claim 1, characterized in that: A controller electrically connected to the sensor and a three-color lamp electrically connected to the controller are installed on the upper crossbeam.

3. The steel cord resilience detection method according to claim 1, characterized in that: The free end mounting portion of the steel cord is a magnetic adsorption device.

4. The steel cord resilience detection method according to claim 1, characterized in that: The steel cord fixing and mounting part is a first hole and a second hole arranged on the upper cross beam. The axial direction of the first hole is vertical, the axial direction of the second hole is perpendicular to the axial direction of the first hole and the second hole is connected to the first hole. The locking bolt passes through the second hole to fix the steel cord in the first hole.

5. The steel cord resilience detection method according to claim 1, characterized in that: The free end mounting part of the steel cord is a third hole and a fourth hole arranged on the upper crossbeam and a magnetic adsorption device installed on the upper crossbeam. The third hole and the fourth hole are symmetrically installed on both sides of the first hole. The magnetic adsorption device adsorbs the steel cord in the third hole or the fourth hole.

6. The steel cord resilience detection method according to claim 1, characterized in that: The magnetic adsorption device is an electromagnetic chuck.

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