阅读说明：本技术 一种基于磁记忆信号的钢丝损伤检测实验平台 (Steel wire damage detection experiment platform based on magnetic memory signal ) 是由 孟庆领 杨新磊 王海良 潘鹏超 钱阳 于 2021-08-03 设计创作，主要内容包括：本发明公开一种基于磁记忆信号的钢丝损伤检测实验平台,包括支撑架、拉力传感组件、左拉伸夹具组件、滑动磁记忆传感探头组件、右拉伸夹具组件和拉力施加组件,在支撑架上依次设置拉力传感组件、左拉伸夹具组件、滑动磁记忆传感探头组件、右拉伸夹具组件和拉力施加组件；拉力传感组件连接左拉伸夹具组件,右拉伸夹具组件连接拉力施加组件,钢丝的两端分别夹在左拉伸夹具组件和右拉伸夹具组件上,滑动磁记忆传感探头组件游走于左拉伸夹具组件和右拉伸夹具组件之间,且滑动磁记忆传感探头组件的探头对向钢。本发明能够快速且有效的检测钢丝损伤,实现磁记忆传感器关于钢丝磁记忆信号收集的完整性和严谨性,减少因距离和速度因素造成的实验误差。(The invention discloses a steel wire damage detection experimental platform based on a magnetic memory signal, which comprises a support frame, a tension sensing assembly, a left stretching clamp assembly, a sliding magnetic memory sensing probe assembly, a right stretching clamp assembly and a tension applying assembly, wherein the tension sensing assembly, the left stretching clamp assembly, the sliding magnetic memory sensing probe assembly, the right stretching clamp assembly and the tension applying assembly are sequentially arranged on the support frame; the tensile force sensing assembly is connected with the left stretching clamp assembly, the right stretching clamp assembly is connected with the tensile force applying assembly, two ends of the steel wire are respectively clamped on the left stretching clamp assembly and the right stretching clamp assembly, the sliding magnetic memory sensing probe assembly moves between the left stretching clamp assembly and the right stretching clamp assembly, and the probe of the sliding magnetic memory sensing probe assembly faces the steel. The invention can quickly and effectively detect the steel wire damage, realize the integrity and the rigor of the magnetic memory sensor on the collection of the steel wire magnetic memory signals and reduce the experimental error caused by distance and speed factors.)

1. A steel wire damage detection experiment platform based on a magnetic memory signal is characterized by comprising a support frame (1), a tension sensing assembly, a left stretching clamp (6) assembly, a sliding magnetic memory sensing probe assembly, a right stretching clamp (12) assembly and a tension applying assembly, wherein the tension sensing assembly, the left stretching clamp (6) assembly, the sliding magnetic memory sensing probe assembly, the right stretching clamp (12) assembly and the tension applying assembly are sequentially arranged on the support frame (1);

the utility model discloses a tensile strength sensing assembly, including tensile strength sensing assembly, tensile strength sensing assembly connects left tensile anchor clamps (6) subassembly, right tensile anchor clamps (12) subassembly is connected the pulling force and is exerted the subassembly, and the both ends of steel wire (16) press from both sides respectively on left tensile anchor clamps (6) subassembly and right tensile anchor clamps (12) subassembly, slip magnetism memory sensing probe assembly walks around between left tensile anchor clamps (6) subassembly and right tensile anchor clamps (12) subassembly, just the probe subtend steel wire (16) of slip magnetism memory sensing probe assembly.

2. The steel wire damage detection experiment platform based on the magnetic memory signal as claimed in claim 1, wherein the tension sensing assembly comprises a tension sensor support base (2), a tension sensor (3) and a connection support base (4), the bottom of the tension sensor support base (2) and the bottom of the connection support base (4) are sequentially fixed on the support frame (1), the tension sensor (3) is arranged on the tension sensor support base (2), and the sensing end of the tension sensor (3) is connected with the left tensile clamp (6) assembly after being supported by the connection support base (4).

3. The steel wire damage detection experiment platform based on the magnetic memory signal as claimed in claim 2, wherein the left stretching clamp (6) assembly comprises a left stretching clamp (6) and a left stretching clamp support block (5), and two ends of the left stretching clamp support block (5) are respectively connected with the connection support base (4) and the left stretching clamp (6).

4. The steel wire damage detection experiment platform based on the magnetic memory signals is characterized in that the sliding magnetic memory sensing probe assembly comprises an upper magnetic memory sensing probe (10), a lower magnetic memory sensing probe (11), a probe frame (7), a sliding block (8) and a sliding rail (9), the upper magnetic memory sensing probe (10) and the lower magnetic memory sensing probe (11) are correspondingly arranged on the probe frame (7) from top to bottom, a steel wire (16) is arranged between the upper magnetic memory sensing probe (10) and the lower magnetic memory sensing probe (11), the sliding block (8) is installed at the bottom of the probe frame (7), the sliding block (8) is connected with the sliding rail (9) in a sliding mode, and the sliding rail (9) is arranged on the supporting frame (1).

5. The steel wire damage detection experiment platform based on the magnetic memory signal as claimed in claim 4, wherein the sliding block (8) is connected to a motor through a transmission assembly, and the control end of the motor is connected with a control terminal through a signal line.

6. The steel wire damage detection experiment platform based on the magnetic memory signal as claimed in claim 1, wherein the right stretching clamp (12) assembly comprises a right stretching clamp (12) and a right stretching clamp support block (13), and two ends of the right stretching clamp support block (13) are respectively connected with the right stretching clamp (12) and the support frame (1) and a tension applying assembly.

7. The steel wire damage detection experiment platform based on the magnetic memory signal is characterized in that the tension applying assembly comprises a tension supporting seat (14), a screw rod (17) and a nut (15), the tension supporting seat (14) is fixed on the support frame (1), the screw rod (17) penetrates through the tension supporting seat (14), the end part of the inner side of the screw rod (17) is connected with the right stretching clamp supporting block (13), and the nut (15) is arranged on the outer side of the screw rod (17).

8. The steel wire damage detection experiment platform based on the magnetic memory signal as claimed in any one of claims 1 to 7, wherein the supporting frame (1) comprises a bottom plate, a left end plate and a right end plate, the left end plate and the right end plate stand at two ends of the bottom plate, the tension sensing assembly and the sliding magnetic memory sensing probe assembly are arranged on the bottom plate, and the tension applying assembly is arranged on the right end plate.

Technical Field

The invention belongs to the technical field of steel wire detection, and particularly relates to a steel wire damage detection experimental platform based on a magnetic memory signal.

Background

The existing detection methods for steel wires mostly adopt methods such as X-ray, ultrasonic wave, magnetic powder, eddy current, gamma ray, penetration, magnetic flux leakage and the like, but the methods have certain defects, such as: a special magnetizing device is needed, and the surface needs to be cleaned; coupling technology is required; stress concentration parts cannot be quickly and accurately detected; the steel wire defects cannot be effectively detected, and the defects which will occur in the future cannot be predicted.

At present, no complete experimental platform exists for the damage detection of the steel wire, and the complete experimental platform is used for detecting the damage degree and the damage position of the steel wire. Because the service environment of the steel wire is carried out under a certain tensile force condition, the magnetic memory signals of the steel wire are collected and processed, and in the process of collecting and processing the magnetic memory signals, the existing device cannot strictly control the distance between the sensor and the steel wire and the moving speed of the sensor, so that the collection rigidness of the magnetic memory signals is ensured.

Disclosure of Invention

In order to solve the problems, the invention provides a steel wire damage detection experimental platform based on a magnetic memory signal, the device is used for detecting the passing of the tension and the magnetic memory signal, and the steel wire damage judgment data is obtained quickly and efficiently; the method can quickly and effectively detect the damage of the steel wire, realize the integrity and the rigor of the magnetic memory sensor about the collection of the magnetic memory signals of the steel wire, and reduce the experimental error caused by distance and speed factors.

In order to achieve the purpose, the invention adopts the technical scheme that: a steel wire damage detection experiment platform based on magnetic memory signals comprises a support frame, a tension sensing assembly, a left stretching clamp assembly, a sliding magnetic memory sensing probe assembly, a right stretching clamp assembly and a tension applying assembly, wherein the tension sensing assembly, the left stretching clamp assembly, the sliding magnetic memory sensing probe assembly, the right stretching clamp assembly and the tension applying assembly are sequentially arranged on the support frame;

the tensile force sensing assembly is connected with the left stretching clamp assembly, the right stretching clamp assembly is connected with the tensile force applying assembly, two ends of the steel wire are respectively clamped on the left stretching clamp assembly and the right stretching clamp assembly, the sliding magnetic memory sensing probe assembly is moved between the left stretching clamp assembly and the right stretching clamp assembly, and the sliding magnetic memory sensing probe assembly is opposite to the steel wire.

Further, the support frame includes bottom plate, left end board and right-hand member board stand in the both ends of bottom plate, pulling force sensing component, slip magnetism memory sensing probe subassembly set up on the bottom plate, the subassembly setting is applyed to the pulling force on right end board. The support frame adopts steel structure skeleton to guarantee can bear the load that is big enough.

Further, the tension sensing assembly comprises a tension sensor supporting seat, a tension sensor and a connecting and supporting seat, the bottom of the tension sensor supporting seat and the bottom of the connecting and supporting seat are sequentially fixed on the supporting frame, the tension sensor is arranged on the tension sensor supporting seat, and the sensing end of the tension sensor is connected with the left stretching clamp assembly after being supported by the connecting and supporting seat. The supporting seat of the tension sensor is carried by the supporting seat of the tension sensor, the tension sensor can be applied with enough tension in the experimental process, and the supporting seat on the left side is a fixing device of the tension sensor so as to ensure the accuracy of tension sensing; the tension sensor converts the borne tension physical signal into a measurable electric signal, and the measurable electric signal is transmitted to the operation terminal, so that a sufficiently accurate tension value is obtained, and a test is conveniently carried out; the connecting and supporting seat is used for being matched with the left tension sensor supporting seat to fix the tension sensor and is used for carrying the stretching clamp.

Further, the left stretching clamp assembly comprises a left stretching clamp and a left stretching clamp supporting block, and two ends of the left stretching clamp supporting block are connected with the supporting seat and the left stretching clamp respectively. The left tensile clamp support block is kept fixed and can bear a load with higher strength. The left tensile clamp clamps the steel wire through the clamp, clamping force can be applied to the tested steel wire through the device, and the tensile force can be obtained by the test piece through applying the clamping force and is transmitted to the tension sensor.

Furthermore, the sliding magnetic memory sensing probe assembly comprises an upper magnetic memory sensing probe, a lower magnetic memory sensing probe, a probe frame, a sliding block and a sliding rail, wherein the upper magnetic memory sensing probe and the lower magnetic memory sensing probe are correspondingly arranged on the probe frame from top to bottom, a steel wire is arranged between the upper magnetic memory sensing probe and the lower magnetic memory sensing probe, the sliding block is arranged at the bottom of the probe frame and is in sliding connection with the sliding rail, and the sliding rail is arranged on the support frame. A probe frame: the upper magnetic memory sensing probe and the lower magnetic memory sensing probe are carried, and the positions of the upper probe and the lower probe can be adjusted, so that the influence of different distances of the probes on the detection precision is observed; a slide block: carrying a probe frame, and moving the probe frame through the sliding of a lower sliding block; an upper probe and a lower probe are adopted to carry two magnetic memory sensors, so that the detection precision is ensured.

Furthermore, the sliding block is connected to a motor through a transmission assembly, and the control end of the motor is connected with a control terminal through a signal line. The control of the horizontal moving distance and speed of the probe is realized by controlling the rotating speed of the motor through a computer terminal, and the transmission assembly can adopt a conventional matching mode of a screw and a gear.

Further, the right stretching clamp assembly comprises a right stretching clamp and a right stretching clamp supporting block, and two ends of the right stretching clamp supporting block are respectively connected with the right stretching clamp, the supporting frame and the tension applying assembly. Through the other end of the right tensile fixture clamping steel wire, the device can apply the assembly through the pulling force and drive to apply the clamping force to the steel wire to be tested, and can make the test piece obtain the pulling force and transmit for the tension sensor through applying the clamping force, and can apply the assembly through the pulling force and apply the pulling force to the steel wire.

The tension applying assembly comprises a tension supporting seat, a screw rod and a nut, the tension supporting seat is fixed on the supporting frame, the screw rod penetrates through the tension supporting seat, the end part of the inner side of the screw rod is connected with the right stretching clamp supporting block, and the nut is arranged on the outer side of the screw rod. For the realization to the pulling force of holding the steel wire, through the manpower with spanner swivel nut, drive the taut steel wire tip of screw rod and hold in order to realize tensile with adding, guarantee that the tensile artifical adjustability of test piece application obtains the pulling force value of needs.

The beneficial effects of the technical scheme are as follows:

since the ferromagnetic metal material is subjected to the combined action of load and earth magnetic field during processing and operation, the orientation and irreversible reorientation of the magnetic domain structure with magnetostrictive property can occur in the stress and deformation concentration area, and the irreversible change of the magnetic state can be not only retained after the working load is eliminated, but also is related to the maximum acting stress. This magnetic state of the surface of the metal component "remembers" the location of the microscopic defects or stress risers, a so-called magnetic memory effect. When a ferromagnetic component in the geomagnetic field environment is subjected to external load, magnetic domain organization orientation and irreversible reorientation with magnetostriction property can be generated in a stress concentration area, a fixed node of a magnetic domain can appear at the position, a magnetic pole is generated, a demagnetizing field is formed, and therefore the magnetic permeability of ferromagnetic metal at the position is minimum, and a leakage magnetic field is formed on the surface of the metal. This irreversible change in magnetic state remains memorized after the workload is removed. The invention utilizes the magnetic state of the steel wire, and collects and processes the magnetic memory signal of the steel wire under the condition of applying tension on the steel wire. The magnetic memory sensor is clamped by screwing a screw through the fixing device, so that the lifting value of the magnetic memory sensor and the steel wire is ensured to be unchanged. The sliding magnetic memory sensing probe assembly controls the distance and the speed of the magnetic memory sensor moving to the other end along one end of the steel wire, so that the completeness and the rigor of the magnetic memory sensor about the collection of the magnetic memory signals of the steel wire are realized, and the experimental error caused by distance and speed factors is reduced.

The invention establishes the mobile carrying platform of the magnetic memory sensor, adopts the motor to enable the device carrying the sensor to move horizontally, avoids the influence of the acceleration at the beginning of the device and the influence of the inertia in the process of moving the device to a stop, and also avoids the problem that the signal collection of the magnetic memory sensor is influenced by the shaking of the sensor caused by unstable moving speed in the moving process.

The invention does not need a special magnetizing device; the surface does not need to be cleaned; coupling technology is not required; the stress concentration part can be quickly and accurately detected; the existing defects can be detected, and the defects which will occur in the future can be predicted according to the change of the internal stress.

Drawings

FIG. 1 is a schematic perspective view of a steel wire damage detection experiment platform based on magnetic memory signals according to the present invention;

FIG. 2 is a top view of a steel wire damage detection experiment platform based on magnetic memory signals according to the present invention;

FIG. 3 is a front view of a steel wire damage detection experiment platform based on a magnetic memory signal according to the present invention.

The device comprises a support frame 1, a tension sensor support seat 2, a tension sensor 3, a connection support seat 4, a left stretching clamp supporting block 5, a left stretching clamp 6, a probe frame 7, a sliding block 8, a sliding rail 9, an upper magnetic memory sensing probe 10, a lower magnetic memory sensing probe 11, a right stretching clamp 12, a right stretching clamp supporting block 13, a tension support seat 14, a nut 15, a steel wire 16 and a screw rod 17.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described with reference to the accompanying drawings.

In this embodiment, referring to fig. 1 to 3, the invention provides a steel wire damage detection experimental platform based on a magnetic memory signal, which includes a support frame 1, a tension sensing assembly, a left stretching clamp 6 assembly, a sliding magnetic memory sensing probe assembly, a right stretching clamp 12 assembly and a tension applying assembly, wherein the support frame 1 is sequentially provided with the tension sensing assembly, the left stretching clamp 6 assembly, the sliding magnetic memory sensing probe assembly, the right stretching clamp 12 assembly and the tension applying assembly;

the tensile force sensing assembly is connected with the left stretching clamp 6 assembly, the right stretching clamp 12 assembly is connected with the tensile force applying assembly, two ends of the steel wire 16 are respectively clamped on the left stretching clamp 6 assembly and the right stretching clamp 12 assembly, the sliding magnetic memory sensing probe assembly is moved between the left stretching clamp 6 assembly and the right stretching clamp 12 assembly, and the sliding magnetic memory sensing probe assembly is opposite to the steel wire 16.

As an optimized scheme of the above embodiment, the support frame 1 includes a bottom plate, a left end plate and a right end plate, the left end plate and the right end plate stand at two ends of the bottom plate, the tension sensing assembly and the sliding magnetic memory sensing probe assembly are arranged on the bottom plate, and the tension applying assembly is arranged on the right end plate. The support frame 1 adopts a steel structure framework to ensure that enough large load can be borne.

As an optimized scheme of the above embodiment, the tension sensing assembly includes a tension sensor support base 2, a tension sensor 3 and a connection support base 4, the bottom of the tension sensor support base 2 and the bottom of the connection support base 4 are sequentially fixed on the support frame 1, the tension sensor 3 is arranged on the tension sensor support base 2, and the sensing end of the tension sensor 3 is connected with the left stretching clamp 6 assembly after being supported by the connection support base 4. The tension sensor supporting seat 2 is provided with a supporting seat of the tension sensor 3, the tension sensor 3 can be applied with enough tension in the experimental process, and the left supporting seat is a fixing device of the tension sensor 3 so as to ensure the accuracy of tension sensing; the tension sensor 3 is an output device which converts the borne tension physical signal into a measurable electric signal and transmits the measurable electric signal to the operation terminal, so that a sufficiently accurate tension value is obtained, and a test is conveniently carried out; the connecting and supporting seat 4 is used for being matched with the left tension sensor supporting seat 2 to fix the tension sensor 3 and is used for carrying a tensile clamp.

As an optimized scheme of the above embodiment, the left stretching clamp 6 assembly includes a left stretching clamp 6 and a left stretching clamp support block 5, and two ends of the left stretching clamp support block 5 are respectively connected with the support seat 4 and the left stretching clamp 6. The left tensile clamp carrier block 5 remains fixed and can bear a load of higher strength. The left stretching clamp 6 clamps the steel wire 16 through the clamp, and clamping force can be applied to the tested steel wire 16 through the device, and the tensile force of the test piece can be obtained and transmitted to the tension sensor 3 by applying the clamping force.

As an optimized scheme of the above embodiment, the sliding magnetic memory sensing probe assembly includes an upper magnetic memory sensing probe 10, a lower magnetic memory sensing probe 11, a probe frame 7, a slider 8 and a slide rail 9, the upper magnetic memory sensing probe 10 and the lower magnetic memory sensing probe 11 are correspondingly arranged on the probe frame 7 from top to bottom, a steel wire 16 is arranged between the upper magnetic memory sensing probe 10 and the lower magnetic memory sensing probe 11, the slider 8 is mounted at the bottom of the probe frame 7, the slider 8 is slidably connected with the slide rail 9, and the slide rail 9 is arranged on the support frame 1. A probe frame 7: the upper magnetic memory sensing probe 10 and the lower magnetic memory sensing probe 11 are carried, and the positions of the upper probe and the lower probe can be adjusted, so that the influence of different distances of the probes on the detection precision can be observed; and (3) a slide block 8: a probe holder 7 is carried and moved by sliding a lower slider 8; an upper probe and a lower probe are adopted to carry two magnetic memory sensors, so that the detection precision is ensured.

Preferably, the sliding block 8 is connected to a motor through a transmission assembly, and a control end of the motor is connected with a control terminal through a signal wire. The control of the horizontal moving distance and speed of the probe is realized by controlling the rotating speed of the motor through a computer terminal, and the transmission assembly can adopt the conventional matching mode of a screw rod 17 and a gear.

As an optimized scheme of the above embodiment, the right stretching clamp 12 assembly includes a right stretching clamp 12 and a right stretching clamp support block 13, and two ends of the right stretching clamp support block 13 are respectively connected to the right stretching clamp 12 and the support frame 1, and a tension applying assembly. The other end of the steel wire 16 is clamped by the right stretching clamp 12, the clamping force can be applied to the steel wire 16 to be tested through the device by driving the tension applying assembly, the test piece can obtain the tension and transmit the tension to the tension sensor 3 by applying the clamping force, and the tension applying assembly can apply the tension to the test piece.

As an optimized scheme of the above embodiment, the tension applying assembly includes a tension supporting seat 14, a screw 17 and a nut 15, the tension supporting seat 14 is fixed on the supporting frame 1, the screw 17 passes through the tension supporting seat 14, the end of the inner side of the screw 17 is connected to the right stretching clamp supporting block 13, and the nut 15 is arranged on the outer side of the screw 17. In order to realize the tension of the clamping steel wire 16, the nut 15 is rotated by a wrench through manpower, the screw 17 is driven to tighten the end part of the steel wire 16 so as to realize the tension adding, and the manual adjustability of the test piece for applying the tension is ensured to obtain the required tension value.

The following describes the test procedure of the apparatus by means of a specific example:

when a brand-new and defect-free single galvanized steel wire 16 with the specification of 7mm is tested, the magnetic field intensity is completely and uniformly distributed when the whole steel wire 16 is axially detected, and no obvious bulge or recess exists. When we select any position to partially damage or directly break a certain part of the steel wire 16, the broken wire position generates a leakage magnetic field due to the increase of magnetic resistance, so that the output signals of the sensors with the 2 measuring sensors on the platform nearest to the broken wire have obvious bulges and depressions at the corresponding positions. And the height and width of the projections and the recesses are closely related to the degree of filament breakage. And generating a defect part in the damage concentration area, generating a fixed node of a magnetic domain, generating a magnetic pole, and forming a demagnetizing field, so that the magnetic permeability of the ferromagnetic metal at the part is minimum, and a leakage magnetic field is formed on the surface of the metal. Therefore, the device can be used for detecting the tension and the magnetic memory signals, and can be used for quickly and efficiently detecting the damage judgment data of the steel wire 16.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.