CN113704034B - Test fixture and test method - Google Patents
Test fixture and test method Download PDFInfo
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- CN113704034B CN113704034B CN202110975329.XA CN202110975329A CN113704034B CN 113704034 B CN113704034 B CN 113704034B CN 202110975329 A CN202110975329 A CN 202110975329A CN 113704034 B CN113704034 B CN 113704034B
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- 238000012360 testing method Methods 0.000 title claims abstract description 94
- 238000010998 test method Methods 0.000 title claims description 7
- 238000005192 partition Methods 0.000 claims description 20
- 230000008602 contraction Effects 0.000 claims description 10
- 230000001276 controlling effect Effects 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims 1
- 238000003780 insertion Methods 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 16
- 230000000712 assembly Effects 0.000 description 4
- 238000000429 assembly Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000004075 alteration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
- G06F11/2205—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing using arrangements specific to the hardware being tested
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
- G06F11/2273—Test methods
Abstract
The invention provides a testing jig and a testing method, wherein the testing jig comprises an air cylinder and a push-pull clamp, the air cylinder is connected with a hard disk bracket assembly for placing a hard disk in a testing machine through the push-pull clamp, and the push-pull of the hard disk bracket assembly at different speeds is realized by controlling the reciprocating motion of the air cylinder, so that the influence of different push-pull speeds on the read-write speed of the hard disk is tested. According to the invention, the manual push-pull hard disk bracket assembly is simulated by controlling the reciprocating motion of the air cylinder, so that a large amount of manpower and material resources are saved, and the influence of push-pull speed on the hard disk read-write speed can be accurately and truly quantized.
Description
Technical Field
The invention relates to the field of hard disk testing devices, in particular to a testing jig and a testing method for the influence of push-pull speed on the read-write speed of a hard disk.
Background
Existing computers typically use hard disks as a storage device for large-capacity and permanent data, however, the performance (e.g., read/write rate) of the hard disk is affected by vibrations caused by the rotation of a system fan within the computer; for servers with multiple hard disks (e.g., conventional network storage servers (Network Attached Storage, NAS)), the overall performance of the hard disks in the server may be affected by the overall vibration caused by the simultaneous operation of multiple hard disks in the server, or by the vibration interference between adjacent hard disks when they are simultaneously operated.
The read-write speed of the hard disk is a key parameter for evaluating the performance of the hard disk, and many factors influencing the read-write speed of the hard disk are included, including hard disk body design, external channels, system vibration and the like. Wherein the system vibration affects the hard disk for the longest time, especially when the computer is running, sudden system vibration occurs, which is very unfavorable for the hard disk running at high speed. Particularly, in practical use today, vibration of the system caused by the push-pull/pull-plug of the hard disk can cause the hard disk to be unable to read and write data according to a circular path when writing or reading data, and thus, the hard disk can twist or deviate from the circular read and write path.
Because the test fixture is not designed for the hard disk plug-in speed test before, the test fixture is generally realized by adopting a manual push-pull mode, the mode is time-consuming and labor-consuming, and the manual push-pull cannot control the push-pull speed, so that the influence of the push-pull speed on the read-write speed of the hard disk cannot be accurately and intuitively quantified.
Disclosure of Invention
The invention aims to provide a testing jig and a testing method for accurately quantifying the influence of push-pull speed on the read-write speed of a hard disk.
In order to achieve the above object, the present invention provides a test fixture, comprising: the air cylinder is connected with the hard disk bracket assembly in the testing machine table through the push-pull clamp, the push-pull of different speeds of the hard disk bracket assembly is realized through controlling the reciprocating motion of the air cylinder, and then the influence of different push-pull speeds on the hard disk read-write speed is tested.
Optionally, a handle is provided on the hard disk bracket assembly, and the push-pull clamp is connected with the hard disk bracket assembly by clamping the handle.
Optionally, the test fixture further includes a cylinder bracket for supporting and moving the cylinder.
Optionally, the cylinder bracket includes:
the support frame is used for supporting and fixing the air cylinder;
The baffle is fixed at the top of the support frame and is provided with an opening for accommodating the push rod of the air cylinder to pass freely;
The truckle is positioned at the bottom of the support frame and is used for realizing the integral movement of the air cylinder; and
And the lifting heel brace is positioned on one side of the trundle and used for lifting and fixing the supporting frame.
Optionally, the push-pull fixture includes:
the fixing assembly comprises an air cylinder fixing frame, a threaded hole is formed in the position, connected with the air cylinder, of the air cylinder fixing frame, and the air cylinder fixing frame is connected with a push rod of the air cylinder through the threaded hole;
the clamping assembly comprises a partition plate, an upper clamping plate and a lower clamping plate, wherein a sliding groove is formed in the partition plate, the upper clamping plate is fixedly arranged on the partition plate in a sliding mode, the cylinder fixing frame is fixed at the bottom of one side of the partition plate, and the lower clamping plate is fixed at the bottom of the other side of the partition plate.
Optionally, the one side that the punch holder faced the punch holder is provided with first draw-in groove, the one side that the punch holder faced the punch holder is provided with the second draw-in groove, first draw-in groove with the position of second draw-in groove is corresponding.
Optionally, a limiting block is further disposed on the second clamping groove, so as to adjust the accommodating space of the clamping component.
Optionally, the push-pull fixture further includes an adjusting assembly, the adjusting assembly including: the screw rod and the screw rod fixing seat are fixed at the top of the partition plate, and the screw rod penetrates through the screw rod fixing seat to be connected with the upper clamping plate so as to adjust the position of the upper clamping plate through screw rotation of the screw rod.
Optionally, a throttle valve is arranged at the input end of the cylinder and used for adjusting the air flow so as to control the pushing force and/or pulling force of the cylinder.
Optionally, the cylinder is connected with the relay, through the relay control the flexible frequency of cylinder to realize the control to the flexible speed of cylinder.
The invention also provides a testing method for measuring the influence of different push-pull speeds on the read-write speed of the hard disk, which comprises the steps of adopting the testing jig described in any one of the above to test, and comprising the following steps: the cylinder is connected with the hard disk bracket assembly in the testing machine through the push-pull clamp, the reciprocating motion of the cylinder is controlled to realize push-pull of different speeds of the hard disk bracket assembly, meanwhile, the testing host tests the read-write speed of the hard disk, and further, the test of the influence of different push-pull speeds on the read-write speed of the hard disk is realized.
Optionally, the hard disk bracket assembly is freely pulled out and plugged from the box body by pushing and pulling a handle on the hard disk bracket assembly.
Optionally, the push-pull fixture comprises a fixing component, a clamping component and an adjusting component, wherein the fixing component is connected with the air cylinder, the clamping component clamps the handle, and the adjusting component controls the clamping component to clamp and release the handle.
Optionally, the cylinder is arranged on the cylinder bracket, and the horizontal displacement of the cylinder is regulated by the truckle of the cylinder bracket, so that the cylinder is displaced to the chassis of the test machine.
Optionally, the vertical height of the air cylinder is adjusted through the lifting foot support of the air cylinder support so as to match the height of the test bed bearing the test machine.
Optionally, the magnitude of the air flow is adjusted by a throttle valve at the input end of the cylinder to control the magnitude of the pushing force and/or pulling force of the cylinder 200.
Optionally, the frequency of the expansion and contraction of the cylinder is controlled through a relay connected with the cylinder, so as to control the expansion and contraction speed of the cylinder.
In summary, the invention provides a testing jig and a testing method, the testing jig comprises an air cylinder and a push-pull clamp, the air cylinder is connected with a hard disk bracket assembly of a hard disk placed in a testing machine through the push-pull clamp, and the push-pull of different speeds of the hard disk bracket assembly is realized by controlling the reciprocating motion of the air cylinder, so that the influence of different push-pull speeds on the read-write speed of the hard disk is tested. According to the invention, the manual push-pull hard disk bracket assembly is simulated by controlling the reciprocating motion of the air cylinder, so that a large amount of manpower and material resources are saved, and the influence of push-pull speed on the hard disk read-write speed can be accurately and truly quantized.
Drawings
FIG. 1 is a schematic diagram of a test fixture according to an embodiment of the present invention;
Fig. 2A to fig. 2C are schematic structural diagrams of a test machine in a test fixture according to an embodiment of the present invention, where fig. 2A is a schematic structural diagram of a chassis partially pulled out by the hard disk bracket assembly, fig. 2B is a schematic structural diagram of a chassis fully pulled out by the hard disk bracket assembly, and fig. 2C is a schematic structural diagram of a chassis not pulled out by the hard disk bracket assembly;
FIG. 3 is a schematic diagram of a cylinder in a test fixture according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a push-pull fixture in a test fixture according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a cylinder bracket in a test fixture according to an embodiment of the invention.
Wherein, the reference numerals are as follows:
100-testing a machine; 110-a chassis; 120-a hard disk bracket assembly; 130-handle; 140-test bed;
200-cylinder; 210-push rod;
300-pushing and pulling the clamp; 310-cylinder fixing assembly; 310 a-a screw port; 320-separator; 320 a-a slide rail; 321-upper clamping plate; 321 a-a first groove; 322-lower splint; 322 a-a second groove; 330-a lead screw; 331-a screw fixing seat;
400-cylinder bracket; 410-supporting frame; 420-baffle; 430-casters; 440-lifting heel brace.
Detailed Description
The test fixture and the test method of the present invention are described in further detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description and drawings, however, it should be understood that the inventive concept may be embodied in many different forms and is not limited to the specific embodiments set forth herein. The drawings are in a very simplified form and are to non-precise scale, merely for convenience and clarity in aiding in the description of embodiments of the invention.
The terms "first," "second," and the like in the description are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein are, for example, capable of operation in other sequences than described or illustrated herein. Similarly, if a method described herein comprises a series of steps, and the order of the steps presented herein is not necessarily the only order in which the steps may be performed, and some of the described steps may be omitted and/or some other steps not described herein may be added to the method. If a component in one drawing is identical to a component in another drawing, the component will be easily recognized in all drawings, but in order to make the description of the drawings clearer, the specification does not refer to all the identical components in each drawing.
Fig. 1 is a schematic structural diagram of a test fixture according to the present embodiment. As shown in fig. 1, the present embodiment provides a test fixture, including: the device comprises an air cylinder 200 and a push-pull clamp 300 connected with the air cylinder 200, wherein the air cylinder 200 is connected with a hard disk bracket assembly 120 for placing a hard disk in a test machine 100 through the push-pull clamp 300, and push-pull of different speeds of the hard disk bracket assembly 120 is realized by controlling the reciprocating motion of the air cylinder 200, so that the influence of different push-pull speeds on the read-write speed of the hard disk is tested.
Specifically, fig. 2A to fig. 2C are schematic structural diagrams of the test machine 100 in the test fixture provided in this embodiment, where fig. 2A is a schematic structural diagram of the hard disk bracket assembly 120 partially pulled out of the chassis 110, fig. 2B is a schematic structural diagram of the hard disk bracket assembly 120 fully pulled out of the chassis 110, and fig. 2C is a schematic structural diagram of the hard disk bracket assembly 120 not pulled out of the chassis 110. As shown in fig. 2A to 2C, the test bench 100 includes a case 110, a test host (not shown) located in the case 100, a hard disk bracket assembly 120 for placing a hard disk, and a test bench for supporting the case 110. One end of the hard disk bracket assembly 120 is provided with a handle 130, and the hard disk bracket assembly 120 can be freely inserted into and removed from the case 100 by pushing and pulling the handle 130. The box 110 includes a plurality of hard disk bracket assemblies 120, and the hard disk bracket assemblies 120 bear a plurality of hard disks, and in this embodiment, the box 110 of the test machine 100 includes 2 hard disk bracket assemblies 120, and the hard disk bracket assemblies 120 bear 7 hard disks. In other embodiments of the present invention, the test fixture is equally applicable to other types of test machines 100.
Fig. 3 is a schematic structural diagram of a cylinder 200 in the test fixture according to the present embodiment, and fig. 5 is a schematic structural diagram of a cylinder bracket 400 in the test fixture according to the present embodiment. As shown in fig. 1, 3 and 5, the test fixture further includes a cylinder bracket 400 for supporting and moving the cylinder 200. The cylinder bracket 400 includes: the test bench comprises a support frame 410, a baffle 420, a trundle 430 and a lifting foot support 440, wherein the cylinder 200 is fixed at the top of the support frame 410, the baffle 420 is fixed at the top of the support frame 410, an opening is formed in the baffle 420 to accommodate free passage of a push rod 210 of the cylinder 200, the trundle 430 is positioned at the bottom of the support frame 410 and is used for realizing integral movement of the cylinder 200, the lifting foot support 440 is positioned at one side of the trundle 430 and is used for lifting and fixing the support frame 410, namely, the horizontal displacement of the cylinder 200 is regulated through the trundle 430, so that the cylinder 200 is displaced to the position of a chassis 110 of the test bench 100, and the vertical height of the cylinder 200 is regulated through the lifting foot support 440 so as to match the height of the test bench 140. Preferably, the casters 430 and the lifting foot support 440 are located at four corners of the bottom of the support frame 410, and in other embodiments of the present invention, the casters 430 and the lifting foot support 440 may be located at other positions of the bottom of the support frame 410, and the number of casters 430 and the lifting foot support 440 may be set according to the actual requirements.
Fig. 4 is a schematic structural diagram of a push-pull fixture 300 in the test fixture according to the present embodiment. As shown in fig. 4, the push-pull fixture 300 includes a fixing assembly and a clamping assembly, wherein the fixing assembly includes a cylinder fixing frame 310, a threaded hole 310a is provided at a position where the cylinder fixing frame 310 is connected to the cylinder 200, and the threaded hole 310a is connected to the push rod 210 of the cylinder 200; the clamping assembly comprises a partition plate 320, an upper clamping plate 321 and a lower clamping plate 322, wherein a sliding rail 320a is arranged on the partition plate 320, one end of the upper clamping plate 321 is provided with a sliding block (not shown in the figure) matched with the sliding rail 320a, so that the upper clamping plate 321 is slidably fixed on the partition plate 320, the bottom of one side of the partition plate 320 is fixed with the cylinder fixing frame 310, and the bottom of the other side of the partition plate 320 is fixed with the lower clamping plate 322.
Further, a first clamping groove 321a is formed in a surface of the upper clamping plate 321 facing the lower clamping plate 322, a second clamping groove 322a is formed in a surface of the lower clamping plate 322 facing the upper clamping plate 321, and the first clamping groove 321a and the second clamping groove 322a are equal in width and correspond in position. By sliding the upper clamping plate 321 up and down on the partition plate 320, the relative positions of the upper clamping plate 321 and the lower clamping plate 322 are adjusted to clamp or release the handle 130 of the hard disk bracket assembly 120 by the first clamping groove 321a and the second clamping groove 322 a.
Optionally, a stopper (not shown) is further disposed on the second clamping groove 322a to adjust the accommodating space of the clamping assembly. That is, when the widths of the first slot 321a and the second slot 322a are larger than the width of the pull handle 130 in a certain range, and when the gap between the width of the pull handle 130 and the widths of the first slot 321a and the second slot 322a exceeds the range, the first slot 321a and the second slot 322a can shake horizontally when clamping the pull handle 130, so as to affect the push-pull test of the hard disk, so that a movable limiting block is further arranged on the second slot 322a, the size of the limiting block can be set according to the width of the pull handle 130 and the widths of the first slot 321a and the second slot 322a, and the holding space clamped by the first slot 321a and the second slot 322a is adjusted by the limiting block, thereby ensuring the stability of the clamping operation of the clamping assembly.
In this embodiment, the push-pull fixture 300 further includes an adjusting component, and the adjusting component controls the upper clamping plate 321 to slide up and down on the partition plate 320, so as to control the clamping and releasing of the clamping component. Illustratively, the adjusting assembly includes a screw 330 and a screw fixing base 331, wherein the screw fixing base 331 is fixed at the top of the partition 320, and the screw 330 passes through the screw fixing base 331 to be connected to the upper clamping plate 321, so as to adjust the position of the upper clamping plate 321 by screw rotation of the screw 330.
Further, in this embodiment, a throttle valve is disposed at an input end of the cylinder 200, and is used to adjust the air flow to control the pushing force and/or pulling force of the cylinder 200, and the cylinder 200 is connected to a relay, and the frequency of expansion and contraction of the cylinder 200 is controlled by the relay, so as to control the expansion and contraction speed of the cylinder 200. The time for the cylinder to complete one-time reciprocating motion is controlled by adjusting the relay, so that different push-pull speeds can be realized by the cylinder, and the influence of the different push-pull speeds on the read-write speed of the hard disk can be tested. Through analysis of the obtained test data, the most suitable push-pull speed can be found, and the method has certain guiding significance on the push-pull speed of an operator in the actual push-pull hard disk bracket assembly.
Correspondingly, the invention also provides a testing method which comprises the step of measuring the influence of different push-pull speeds on the read-write speed of the hard disk by adopting the testing jig. Specifically, as shown in fig. 1 to 5, the air cylinder 200 is connected with the hard disk bracket assembly 120 in the test machine 100 through the push-pull fixture 300, and controls the reciprocating motion of the air cylinder 200 to realize push-pull on the hard disk bracket assembly 130 at different speeds, and meanwhile, the test host tests the read-write speed of the hard disk, so as to realize the test of the influence of the different push-pull speeds on the read-write speed of the hard disk.
Optionally, the hard disk bracket assembly 120 is freely removable from the housing 100 by pushing and pulling a pull tab 130 on the hard disk bracket assembly 120.
Optionally, the push-pull fixture 300 includes a fixing component, a clamping component and an adjusting component, the fixing component is connected with the air cylinder 200, the clamping component clamps the handle 130, and the adjusting component controls the clamping component to clamp and release the handle 130.
Optionally, the air cylinder 200 is disposed on the air cylinder bracket 400, and the horizontal displacement of the air cylinder 200 is adjusted by the caster 430 of the air cylinder bracket 400, so that the air cylinder is displaced to the chassis 110 of the test machine 100.
Optionally, the vertical height of the cylinder 200 is adjusted by the lifting foot support 440 of the cylinder bracket 400 to match the height of the test stand 140 carrying the test stand 100.
Optionally, the magnitude of the air flow is adjusted by a throttle valve at the input end of the air cylinder 200 to control the magnitude of the pushing force and/or pulling force of the air cylinder 200.
Optionally, the frequency of the expansion and contraction of the air cylinder 200 is controlled through a relay connected with the air cylinder 200, so as to control the expansion and contraction speed of the air cylinder 200.
In summary, the invention provides a testing jig and a testing method, the testing jig comprises an air cylinder and a push-pull clamp, the air cylinder is connected with a hard disk bracket assembly for placing a hard disk in a testing machine through the push-pull clamp, and the push-pull of different speeds of the hard disk bracket assembly is realized by controlling the reciprocating motion of the air cylinder, so that the influence of different push-pull speeds on the read-write speed of the hard disk is tested. According to the invention, the manual push-pull hard disk bracket assembly is simulated by controlling the reciprocating motion of the air cylinder, so that a large amount of manpower and material resources are saved, and the influence of push-pull speed on the hard disk read-write speed can be accurately and truly quantized.
The above description is only illustrative of the preferred embodiments of the present invention and is not intended to limit the scope of the present invention, and any alterations and modifications made by those skilled in the art based on the above disclosure shall fall within the scope of the appended claims.
Claims (17)
1. A test fixture, its characterized in that includes: the air cylinder is connected with the hard disk bracket assembly in the testing machine table through the push-pull clamp, the push-pull of different speeds of the hard disk bracket assembly is realized through controlling the reciprocating motion of the air cylinder, and then the influence of different push-pull speeds on the hard disk read-write speed is tested.
2. The test fixture of claim 1, wherein a pull handle is provided on the hard disk carrier assembly, and the push-pull clamp is coupled to the hard disk carrier assembly by clamping the pull handle.
3. The test fixture of claim 1, further comprising a cylinder support for supporting and moving the cylinder.
4. The test fixture of claim 3, wherein the cylinder bracket comprises:
the support frame is used for supporting and fixing the air cylinder;
The baffle is fixed at the top of the support frame and is provided with an opening for accommodating the push rod of the air cylinder to pass freely;
The truckle is positioned at the bottom of the support frame and is used for realizing the integral movement of the air cylinder; and
And the lifting heel brace is positioned on one side of the trundle and used for lifting and fixing the supporting frame.
5. The test fixture of claim 1, wherein the push-pull fixture comprises:
the fixing assembly comprises an air cylinder fixing frame, a threaded hole is formed in the position, connected with the air cylinder, of the air cylinder fixing frame, and the air cylinder fixing frame is connected with a push rod of the air cylinder through the threaded hole;
the clamping assembly comprises a partition plate, an upper clamping plate and a lower clamping plate, wherein a sliding groove is formed in the partition plate, the upper clamping plate is fixedly arranged on the partition plate in a sliding mode, the cylinder fixing frame is fixed at the bottom of one side of the partition plate, and the lower clamping plate is fixed at the bottom of the other side of the partition plate.
6. The test fixture of claim 5, wherein a first clamping groove is formed in a surface of the upper clamping plate, which faces the lower clamping plate, and a second clamping groove is formed in a surface of the lower clamping plate, which faces the upper clamping plate, and the positions of the first clamping groove and the second clamping groove correspond to each other.
7. The test fixture of claim 6, wherein the second clamping groove is further provided with a limiting block to adjust the accommodating space of the clamping assembly.
8. The test fixture of claim 5, wherein the push-pull fixture further comprises an adjustment assembly comprising: the screw rod and the screw rod fixing seat are fixed at the top of the partition plate, and the screw rod penetrates through the screw rod fixing seat to be connected with the upper clamping plate so as to adjust the position of the upper clamping plate through screw rotation of the screw rod.
9. The test fixture of claim 1, wherein the input end of the cylinder is provided with a throttle valve for adjusting the air flow to control the magnitude of the pushing force and/or pulling force of the cylinder.
10. The test fixture of claim 1, wherein the cylinder is connected to a relay, and the frequency of expansion and contraction of the cylinder is controlled by the relay to control the expansion and contraction speed of the cylinder.
11. A test method for measuring the effect of different push-pull speeds on the read-write speed of a hard disk, comprising performing a test using the test jig according to any one of claims 1 to 10, comprising: the cylinder is connected with the hard disk bracket assembly in the testing machine through the push-pull clamp, the reciprocating motion of the cylinder is controlled to realize push-pull of different speeds of the hard disk bracket assembly, meanwhile, the testing host tests the read-write speed of the hard disk, and further, the test of the influence of different push-pull speeds on the read-write speed of the hard disk is realized.
12. The method of testing of claim 11, wherein the free insertion and removal of the hard disk carrier assembly from the housing is accomplished by pushing and pulling a pull on the hard disk carrier assembly.
13. The testing method according to claim 12, wherein the push-pull clamp comprises a fixing assembly, a clamping assembly and an adjusting assembly, the handle is clamped by the clamping assembly through connection of the fixing assembly and the clamping assembly and release of the handle by the clamping assembly is controlled by the adjusting assembly.
14. The method of claim 11, wherein the cylinder is mounted on a cylinder support, and wherein the cylinder is displaced to the housing of the test station by adjusting the cylinder to be horizontally displaced by casters of the cylinder support.
15. The test method of claim 14, wherein the vertical height of the cylinder is adjusted by a lifting foot support of the cylinder support to match the height of a test stand carrying the test stand.
16. The test method according to claim 11, characterized in that the magnitude of the air flow is regulated by means of a throttle valve at the input of the cylinder to control the magnitude of the pushing and/or pulling force of the cylinder (200).
17. The method according to claim 11, wherein the frequency of expansion and contraction of the cylinder is controlled by a relay connected to the cylinder to control the expansion and contraction speed of the cylinder.
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| CN202110975329.XA CN113704034B (en) | 2021-08-24 | 2021-08-24 | Test fixture and test method |
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| CN108982049A (en) * | 2018-08-17 | 2018-12-11 | 郑州云海信息技术有限公司 | A kind of server impact vibration test method and device |
| CN210864691U (en) * | 2019-11-29 | 2020-06-26 | 苏州浪潮智能科技有限公司 | Plug-in mechanism for server hard disk hot plug test and test system |
| CN212411584U (en) * | 2020-06-08 | 2021-01-26 | 曙光信息产业(北京)有限公司 | Torsional vibration test hard disk data connection tool |
| CN112650635A (en) * | 2020-12-22 | 2021-04-13 | 宁畅信息产业(北京)有限公司 | Hard disk performance test method and simulated hard disk |
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