CN111473937A - Computer hard disk and protection device test equipment thereof - Google Patents

Computer hard disk and protection device test equipment thereof Download PDF

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Publication number
CN111473937A
CN111473937A CN202010266839.5A CN202010266839A CN111473937A CN 111473937 A CN111473937 A CN 111473937A CN 202010266839 A CN202010266839 A CN 202010266839A CN 111473937 A CN111473937 A CN 111473937A
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CN
China
Prior art keywords
plate
gear
shaped
hard disk
motor
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Pending
Application number
CN202010266839.5A
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Chinese (zh)
Inventor
李春辉
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李春辉
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Application filed by 李春辉 filed Critical 李春辉
Priority to CN202010266839.5A priority Critical patent/CN111473937A/en
Publication of CN111473937A publication Critical patent/CN111473937A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M7/00Vibration-testing of structures; Shock-testing of structures
    • G01M7/08Shock-testing
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M7/00Vibration-testing of structures; Shock-testing of structures
    • G01M7/02Vibration-testing by means of a shake table
    • G01M7/025Measuring arrangements

Abstract

The invention relates to a computer detection device, in particular to a computer hard disk and a protection device test device thereof, which comprises a mounting back plate, a Z-shaped baffle and a drawing extension plate, wherein the Z-shaped baffle is fixedly arranged on the mounting back plate, the drawing extension plate is arranged on the Z-shaped baffle, an impact mechanism is fixedly arranged on the mounting back plate, and a clamping mechanism is arranged on the mounting back plate.

Description

Computer hard disk and protection device test equipment thereof
Technical Field
The invention relates to a computer detection device, in particular to a computer hard disk and a protection device test device thereof.
Background
The computer hard disk is the most main storage equipment of a computer and is important, but the hard disk is very fragile, and is often damaged due to collision, and the hard disk protection device is produced on the market.
Disclosure of Invention
The invention mainly solves the technical problem of providing a computer hard disk and a test device for a protection device thereof, wherein the device simulates three common conditions of impact, vibration and falling to detect the shock resistance of the hard disk and the protection device of the hard disk, and further selects the preference from the three conditions.
The purpose of the invention is realized by the following technical scheme:
the utility model provides a computer hard disk and protection device test equipment thereof, includes that installation uses backplate, Z shape baffle and pull extension board, Z shape baffle fixed mounting is on the backplate for the installation, the pull extension board is installed on Z shape baffle, striking mechanism fixed mounting on the backplate for the installation, press from both sides and get the mechanism and install on the backplate for the installation.
As a further optimization of the technical scheme, the drawing extension plate of the computer hard disk and the protection device testing equipment thereof comprises a circular button, a threaded column and a movable baffle plate, wherein the circular button is in threaded connection with the threaded column, the threaded column is in threaded connection with the movable baffle plate, and the movable baffle plate is slidably mounted on a groove formed in a Z-shaped baffle plate.
In order to solve the problem of how to simulate two conditions of vibration and impact for detection, the invention adopts the technical scheme that:
as a further optimization of the technical scheme, the impact mechanism of the computer hard disk and the protection device test equipment thereof comprises a threaded connecting column, a long-direction shell, a supporting spring and a corrugated plate, striking piece, the semi-gear, the pulling motor, circular baffle, fixed mounting has circular baffle on the screw thread spliced pole, circular baffle movable mounting is in the recess of long direction shell, long direction shell fixed mounting is on the backplate for the installation, supporting spring's one end fixed mounting is on circular baffle, supporting spring's other end fixed mounting is on the striking piece, striking piece slidable mounting is on the recess that sets up on the long direction shell, the profile board and striking piece fixed connection, profile board slidable mounting is on the through-hole that sets up on the long direction shell, the profile board is mediated with the semi-gear, semi-gear fixed mounting is at the output of pulling motor, pulling motor fixed mounting is on the backplate for the installation.
In order to solve the problem of how to simulate the falling condition for detection, the invention adopts the technical scheme that:
as a further optimization of the technical scheme, the clamping mechanism of the test equipment for the computer hard disk and the protection device thereof comprises a grooved strip-shaped plate, a lifting motor, a motor gear, a linkage gear, an internal thread limiting ring, a lifting threaded column and a kneading assembly, wherein the grooved strip-shaped plate is fixedly arranged on a mounting backboard, the lifting motor is fixedly arranged on the mounting backboard, the motor gear is fixedly arranged at the output end of the lifting motor, the motor gear is rotatably arranged on a groove arranged on the mounting backboard, the motor gear is meshed with the linkage gear, the linkage gear is fixedly connected with the internal thread limiting ring, the internal thread limiting ring is rotatably arranged on a through hole arranged on the mounting backboard, the internal thread limiting ring is in threaded connection with the lifting threaded column, and the lifting threaded column is rotatably arranged on the kneading assembly;
the kneading component comprises a T-shaped mounting plate, a pinion, a small motor, a pinion and a first kneading arm, the lifting screw thread column is rotatably installed on a groove formed in a T-shaped installation plate, the T-shaped installation plate is slidably installed on the groove formed in a grooved strip-shaped plate, a small motor is fixedly installed on a through hole formed in the T-shaped installation plate, a pinion is fixedly installed at the output end of the small motor and meshed with a main gear, the main gear is meshed with a pinion, the pinion is fixedly connected with a kneading arm I, the kneading arm I is rotatably installed on the groove formed in the T-shaped installation plate, the main gear is fixedly connected with a kneading arm II, the kneading arm II is rotatably installed on the groove formed in the T-shaped installation plate, the kneading arm I is hinged with the positioning U-shaped piece I, and the kneading arm II is hinged with the positioning U-shaped piece II.
The computer hard disk and the protection device test equipment thereof have the beneficial effects that:
1. through selecting the screw thread spliced pole, control supporting spring's flexible degree to control supporting spring makes the striking dynamics that the striking produced the difference to the support dynamics of striking, and the screw thread spliced pole is threaded connection with long side shell, and the circular baffle of control that can be accurate extrudes supporting spring's dynamics, thereby realizes accurate control and the striking dynamics of adjustment striking.
2. The impact mechanism is used for simulating the vibration or impact condition of the hard disk in real life, so that the vibration resistance degree of the hard disk and the hard disk protection device is detected.
3. The clamping mechanism is used for simulating the accidental falling condition of the hard disk in real life, so that the anti-seismic degree of the hard disk and the hard disk protection device is detected.
Drawings
The invention is described in further detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic perspective view of a computer hard disk and a testing device for a protection device thereof according to the present invention.
Fig. 2 is a schematic perspective view of a back plate 1 for mounting a computer hard disk and a testing device of a protection device thereof, a Z-shaped baffle 2 and a drawing extension plate 3.
Fig. 3 is a schematic perspective view of a back plate 1 for mounting a computer hard disk and a testing device for a protection device thereof, a Z-shaped baffle 2, a drawing extension plate 3 and an impact mechanism 4.
Fig. 4 is a schematic perspective view of a drawing extension plate 3 of a testing device for a computer hard disk and a protection device thereof according to the present invention.
Fig. 5 is a schematic structural diagram of the drawing extension plate 3 and the Z-shaped baffle 2 of the testing equipment for the computer hard disk and the protection device thereof.
Fig. 6 is a schematic perspective view of an impact mechanism 4 of a computer hard disk and its protection device testing apparatus according to the present invention.
Fig. 7 is a schematic supplementary perspective structure diagram of the impact mechanism 4 of the testing device for a computer hard disk and a protection device thereof according to the present invention.
Fig. 8 is a schematic perspective view of a clamping mechanism 5 of a testing device for a computer hard disk and a protection device thereof according to the present invention.
FIG. 9 is a schematic perspective view of a kneading unit 5-7 of a testing device for a computer hard disk and a protection device thereof according to the present invention.
FIG. 10 is a schematic view of a partial cross-sectional structure of a kneading block 5-7 of a computer hard disk and its protection device testing apparatus according to the present invention.
FIG. 11 is a schematic view of a partial cross-sectional structure of a kneading block 5-7 of a computer hard disk and its protection device testing apparatus according to the present invention.
Fig. 12 is a schematic structural diagram of a clamping mechanism 5 and a mounting back plate 1 of a testing device for a computer hard disk and a protection device thereof according to the present invention.
In the figure: a back plate 1 for mounting; a Z-shaped baffle 2; a pull-out extension plate 3; 3-1 of a round button; 3-2 of a threaded column; 3-3 of a movable baffle plate; an impact mechanism 4; a threaded connecting column 4-1; a longitudinal housing 4-2; 4-3 of a supporting spring; 4-4 of a corrugated plate; 4-5 of a striking piece; 4-6 parts of a half gear; pulling a motor 4-7; 4-8 parts of a circular baffle plate; a gripping mechanism 5; a grooved strip-shaped plate 5-1; a lifting motor 5-2; 5-3 parts of a motor gear; 5-4 parts of a linkage gear; 5-5 parts of an internal thread limiting ring; 5-6 of a lifting threaded column; 5-7 parts of kneading component; a T-shaped mounting plate 5-7-1; pinion 5-7-2; 5-7-3 parts of a small motor; 5-7-4 parts of auxiliary gear; 5-7-5 parts of a first kneading arm; positioning a first U-shaped piece 5-7-6; 5-7-7 of a main gear; 5-7-8 parts of a second kneading arm; and positioning the U-shaped piece two 5-7-9.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The first embodiment is as follows:
the following describes the present embodiment with reference to fig. 1 to 12, and a computer hard disk and its protection device testing apparatus includes a mounting backboard 1, a Z-shaped baffle 2 and a drawing extension plate 3, wherein the Z-shaped baffle 2 is fixedly mounted on the mounting backboard 1, the drawing extension plate 3 is mounted on the Z-shaped baffle 2, the striking mechanism 4 is fixedly mounted on the mounting backboard 1, and the clamping mechanism 5 is mounted on the mounting backboard 1.
The second embodiment is as follows:
the following describes the present embodiment with reference to fig. 1 to 12, and the present embodiment further describes the first embodiment, the drawing extension plate 3 includes a circular button 3-1, a threaded column 3-2, and a movable baffle 3-3, the circular button 3-1 is in threaded connection with the threaded column 3-2, the threaded column 3-2 is in threaded connection with the movable baffle 3-3, and the movable baffle 3-3 is slidably mounted on a groove provided on the Z-shaped baffle 2.
The third concrete implementation mode:
the embodiment is described below with reference to fig. 1 to 12, and the embodiment further describes the first embodiment, the striking mechanism 4 includes a threaded connection column 4-1, a long-direction housing 4-2, a support spring 4-3, a corrugated plate 4-4, a striking member 4-5, a half gear 4-6, a pulling motor 4-7, and a circular baffle 4-8, the threaded connection column 4-1 is fixedly provided with the circular baffle 4-8, the circular baffle 4-8 is movably mounted in a groove of the long-direction housing 4-2, the long-direction housing 4-2 is fixedly mounted on the mounting backboard 1, one end of the support spring 4-3 is fixedly mounted on the circular baffle 4-8, the other end of the support spring 4-3 is fixedly mounted on the striking member 4-5, the impact piece 4-5 is slidably mounted on a groove arranged on the long-direction shell 4-2, the insection plate 4-4 is fixedly connected with the impact piece 4-5, the insection plate 4-4 is slidably mounted on a through hole arranged on the long-direction shell 4-2, the insection plate 4-4 is kneaded with the half gear 4-6, the half gear 4-6 is fixedly mounted at the output end of the pulling motor 4-7, the pulling motor 4-7 is fixedly mounted on the mounting back plate 1, the threaded connecting column 4-1 drives the circular baffle 4-8 to extrude the supporting spring 4-3, so that the supporting force of the supporting spring 4-3 to the impact piece 4-5 is increased, otherwise, the supporting force of the supporting spring 4-3 to the impact piece 4-5 is reduced, and the impact force of the impact piece 4-5 can be accurately adjusted, the shock resistance of hard disks or hard disk protection devices with hard disks under different forces can be detected.
The fourth concrete implementation mode:
the embodiment is described below with reference to fig. 1-12, and the embodiment further describes the first embodiment, wherein the gripping mechanism 5 includes a grooved strip plate 5-1, a lifting motor 5-2, a motor gear 5-3, a linkage gear 5-4, an internal thread limit ring 5-5, a lifting threaded column 5-6, and a kneading assembly 5-7, the grooved strip plate 5-1 is fixedly installed on the installation backboard 1, the lifting motor 5-2 is fixedly installed on the installation backboard 1, the motor gear 5-3 is fixedly installed at the output end of the lifting motor 5-2, the motor gear 5-3 is rotatably installed on a groove provided on the installation backboard 1, the motor gear 5-3 is engaged with the linkage gear 5-4, the linkage gear 5-4 is fixedly connected with the internal thread limit ring 5-5, the internal thread limiting ring 5-5 is rotatably arranged on a through hole arranged on the back plate 1 for installation, the internal thread limiting ring 5-5 is in threaded connection with the lifting threaded column 5-6, and the lifting threaded column 5-6 is rotatably arranged on the kneading component 5-7;
the kneading component 5-7 comprises a T-shaped mounting plate 5-7-1, a pinion 5-7-2, a small motor 5-7-3, a pinion 5-7-4, a kneading arm I5-7-5, a positioning U-shaped piece I5-7-6, a main gear 5-7-7, a kneading arm II 5-7-8 and a positioning U-shaped piece II 5-7-9, a lifting threaded column 5-6 is rotatably arranged on a groove arranged on the T-shaped mounting plate 5-7-1, the T-shaped mounting plate 5-7-1 is slidably arranged on the groove arranged on the grooved strip-shaped plate 5-1, the small motor 5-7-3 is fixedly arranged on a through hole arranged on the T-shaped mounting plate 5-7-1, the pinion 5-7-2 is fixedly arranged at the output end of the small motor 5-7-3, the small gear 5-7-2 is meshed with the main gear 5-7-7, the main gear 5-7-7 is meshed with the pinion 5-7-4, the pinion 5-7-4 is fixedly connected with the first kneading arm 5-7-5, the first kneading arm 5-7-5 is rotatably arranged on a groove arranged on the T-shaped mounting plate 5-7-1, the main gear 5-7-7 is fixedly connected with the second kneading arm 5-7-8, the second kneading arm 5-7-8 is rotatably arranged on a groove arranged on the T-shaped mounting plate 5-7-1, the first kneading arm 5-7-5 is hinged with the first positioning U-shaped piece 5-7-6, the second kneading arm 5-7-8 is hinged with the second positioning U-shaped piece 5-7-9, the operation is completed through the kneading component 5-7, the operation is simple, convenient and fast, the effect is stable, the cost is reduced, and the lifting distance of the kneading component 5-7 is controlled to be more accurate because the internal thread limiting ring 5-5 and the lifting thread column 5-6 are in threaded connection.
The invention relates to a computer hard disk and a protection device test device thereof, which has the working principle that:
starting a small motor 5-7-3 to rotate a pinion 5-7-2, driving a main gear 5-7-7 by the pinion 5-7-2, driving a secondary gear 5-7-4 by the main gear 5-7-7, driving a first kneading arm 5-7-5 and a second kneading arm 5-7-8 to open by the secondary gear 5-7-7 and the main gear 5-7-4 and the main gear 5-7-7 respectively, placing one end of a hard disk or a hard disk protection device with the hard disk between a first positioning U-shaped piece 5-7-6 and a second positioning U-shaped piece 5-7-9, driving the pinion 5-7-2 to rotate reversely by the small motor 5-7-3 to clamp one end of the hard disk or the hard disk protection device with the hard disk by the first positioning U-shaped piece 5-7-6 and the second positioning U-shaped piece 5-7-9, the hard disk or the hard disk protection device with the hard disk is fixed, the operation is completed through the kneading components 5-7, the operation is simple, convenient and fast, the effect is stable, and the cost is reduced; starting a lifting motor 5-2, driving a motor gear 5-3 by the lifting motor 5-2 to enable a linkage gear 5-4 to drive an internal thread limiting ring 5-5 to rotate, enabling the internal thread limiting ring 5-5 and a lifting threaded column 5-6 to be in threaded connection, realizing the lifting of a kneading component 5-7 driven by the lifting threaded column 5-6, controlling the lifting distance of the kneading component 5-7 to be more accurate due to the threaded connection of the internal thread limiting ring 5-5 and the lifting threaded column 5-6, driving a pinion 5-7-2 to rotate reversely again by a small motor 5-7-3 at the moment, enabling a positioning U-shaped component I5-7-6 and a positioning U-shaped component II 5-7-9 to be opened, and loosening a hard disk or a hard disk protection device with the hard disk, the hard disk protection device is enabled to do free falling motion, so that the falling resistance of hard disks with different heights or hard disk protection devices with the hard disks can be detected.
Placing a hard disk or a hard disk protection device with the hard disk on a movable baffle 3-3, starting a pulling motor 4-7 at the moment, driving a half gear 4-6 to rotate by the pulling motor 4-7, driving a corrugated plate 4-4 to move upwards by the half gear 4-6, driving an impact piece 4-5 to move upwards and extruding a supporting spring 4-3 by the corrugated plate 4-4, and when the half gear 4-6 is separated from the corrugated plate 4-4, supporting the impact piece 4-5 by the supporting spring 4-3 to move downwards and impact the movable baffle 3-3 to vibrate the movable baffle 3-3, so that the shock resistance of the hard disk or the hard disk protection device with the hard disk is detected; the circular button 3-1 is rotated to enable the threaded column 3-2 to rotate, the threaded column 3-2 drives the movable baffle 3-3 to be completely retracted into a groove formed in the Z-shaped baffle 2, the impact piece 4-5 can continue to extend downwards at the moment, the device is laid on the side at the moment, one side of the grooved strip-shaped plate 5-1 is made to be in contact with a plane, the hard disk or the hard disk protection device with the hard disk is placed on the Z-shaped baffle 2 at the moment, the impact mechanism 4 is operated in the same way, the impact piece 4-5 transversely pushes the hard disk or the hard disk protection device with the hard disk to impact a vertical plate on the Z-shaped baffle 2 at the moment, and the impact resistance and the collision resistance of the hard disk or the hard disk protection device with the hard disk are detected.
The threaded connecting column 4-1 is rotated, so that the threaded connecting column 4-1 drives the circular baffle 4-8 to extrude the supporting spring 4-3, the supporting force of the supporting spring 4-3 on the impact piece 4-5 is increased, otherwise, the supporting force of the supporting spring 4-3 on the impact piece 4-5 is reduced, the impact force of the impact piece 4-5 can be accurately adjusted, and the shock resistance of hard disks or hard disk protection devices with hard disks under different forces can be detected.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and that various changes, modifications, additions and substitutions which are within the spirit and scope of the present invention and which may be made by those skilled in the art are also within the scope of the present invention.

Claims (4)

1. The utility model provides a computer hard disk and protection device test equipment thereof, includes that installation extends board (3) with backplate (1), Z shape baffle (2) and pull, and Z shape baffle (2) fixed mounting is on backplate (1) is used in the installation, and install on Z shape baffle (2) pull extension board (3), its characterized in that: the impact mechanism (4) is fixedly arranged on the back plate (1) for installation, and the clamping mechanism (5) is arranged on the back plate (1) for installation.
2. The computer hard disk and its protection device test equipment of claim 1, characterized in that: the drawing extension plate (3) comprises a circular button (3-1), a threaded column (3-2) and a movable baffle (3-3), the circular button (3-1) is in threaded connection with the threaded column (3-2), the threaded column (3-2) is in threaded connection with the movable baffle (3-3), and the movable baffle (3-3) is slidably mounted on a groove formed in the Z-shaped baffle (2).
3. The computer hard disk and its protection device test equipment of claim 1, characterized in that: the striking mechanism (4) comprises a threaded connecting column (4-1), a long-direction shell (4-2), a supporting spring (4-3), a corrugated plate (4-4), a striking piece (4-5), a half gear (4-6), a pulling motor (4-7) and a circular baffle (4-8), wherein the threaded connecting column (4-1) is fixedly provided with the circular baffle (4-8), the circular baffle (4-8) is movably arranged in a groove of the long-direction shell (4-2), the long-direction shell (4-2) is fixedly arranged on a back plate (1) for installation, one end of the supporting spring (4-3) is fixedly arranged on the circular baffle (4-8), the other end of the supporting spring (4-3) is fixedly arranged on the striking piece (4-5), the impact piece (4-5) is slidably mounted on a groove formed in the long-direction shell (4-2), the corrugated plate (4-4) is fixedly connected with the impact piece (4-5), the corrugated plate (4-4) is slidably mounted on a through hole formed in the long-direction shell (4-2), the corrugated plate (4-4) is kneaded with the half gear (4-6), the half gear (4-6) is fixedly mounted at the output end of the pulling motor (4-7), and the pulling motor (4-7) is fixedly mounted on the mounting back plate (1).
4. The computer hard disk and its protection device test equipment of claim 1, characterized in that: the clamping mechanism (5) comprises a grooved strip-shaped plate (5-1), a lifting motor (5-2), a motor gear (5-3), a linkage gear (5-4), an internal thread limiting ring (5-5), a lifting threaded column (5-6) and a kneading component (5-7), the grooved strip-shaped plate (5-1) is fixedly arranged on the mounting backboard (1), the lifting motor (5-2) is fixedly arranged on the mounting backboard (1), the motor gear (5-3) is fixedly arranged at the output end of the lifting motor (5-2), the motor gear (5-3) is rotatably arranged on a groove arranged on the mounting backboard (1), the motor gear (5-3) is meshed with the linkage gear (5-4), the linkage gear (5-4) is fixedly connected with the internal thread limiting ring (5-5), the internal thread limiting ring (5-5) is rotatably arranged on a through hole arranged on the back plate (1) for installation, the internal thread limiting ring (5-5) is in threaded connection with the lifting threaded column (5-6), and the lifting threaded column (5-6) is rotatably arranged on the kneading component (5-7);
the kneading component (5-7) comprises a T-shaped mounting plate (5-7-1), a pinion (5-7-2), a small motor (5-7-3), a pinion (5-7-4), a first kneading arm (5-7-5), a first positioning U-shaped piece (5-7-6), a main gear (5-7-7), a second kneading arm (5-7-8) and a second positioning U-shaped piece (5-7-9), a lifting threaded column (5-6) is rotatably arranged on a groove arranged on the T-shaped mounting plate (5-7-1), the T-shaped mounting plate (5-7-1) is slidably arranged on the groove arranged on the grooved strip-shaped plate (5-1), the small motor (5-7-3) is fixedly arranged on a through hole arranged on the T-shaped mounting plate (5-7-1), the small gear (5-7-2) is fixedly arranged at the output end of the small motor (5-7-3), the small gear (5-7-2) is meshed with the main gear (5-7-7), the main gear (5-7-7) is meshed with the pinion (5-7-4), the pinion (5-7-4) is fixedly connected with the first kneading arm (5-7-5), the first kneading arm (5-7-5) is rotatably arranged on a groove arranged on the T-shaped mounting plate (5-7-1), the main gear (5-7-7) is fixedly connected with the second kneading arm (5-7-8), and the second kneading arm (5-7-8) is rotatably arranged on a groove arranged on the T-shaped mounting plate (5-7-1), the first kneading arm (5-7-5) is hinged with the first positioning U-shaped piece (5-7-6), and the second kneading arm (5-7-8) is hinged with the second positioning U-shaped piece (5-7-9).
CN202010266839.5A 2020-04-07 2020-04-07 Computer hard disk and protection device test equipment thereof Pending CN111473937A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010266839.5A CN111473937A (en) 2020-04-07 2020-04-07 Computer hard disk and protection device test equipment thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010266839.5A CN111473937A (en) 2020-04-07 2020-04-07 Computer hard disk and protection device test equipment thereof

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CN110174230A (en) * 2019-05-05 2019-08-27 河北工业大学 One kind falling reliability test
CN110044564A (en) * 2019-05-15 2019-07-23 东华理工大学 A kind of electronic product anti-seismic performance survey device
CN110920014A (en) * 2019-10-08 2020-03-27 江西省得一康管业有限公司 Preparation method and detection equipment of MPVE corrugated pipe with point contact high-resistance characteristic

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