CN113848025A

CN113848025A - Spring top post of fan detection jig and fan detection jig

Info

Publication number: CN113848025A
Application number: CN202111094919.8A
Authority: CN
Inventors: 李志仁; 廖翊宏
Original assignee: Asia Vital Components Co Ltd
Current assignee: Asia Vital Components Co Ltd
Priority date: 2021-09-17
Filing date: 2021-09-17
Publication date: 2021-12-28

Abstract

The invention provides a spring top post of a fan detection jig and the fan detection jig, comprising: a jig set is provided with a plurality of spring support posts for clamping and suspending two sides of a fan (or a series of fans) so that the fan or the series of fans is located at a suspended position, each spring support post is provided with a front shell and a rear shell which are arranged in a front-back mode in a two-section mode and an elastic element for connecting the front shell and the rear shell, and at least one spring support post on two sides of the fan (or the series of fans) is respectively provided with a vibration sensor for measuring vibration signals when the fan operates.

Description

Spring top post of fan detection jig and fan detection jig

Technical Field

The invention relates to the field of jigs, in particular to a spring ejection column of a fan detection jig and the fan detection jig.

Background

The fan vibration inspection is to inspect the generated vibration value of each fan with the same model or specification, and then eliminate the fans with the undesirable vibration value, thereby ensuring the quality of the produced fans. The conventional fan detecting device has an accelerometer fixed to a frame of the fan by a through hole, for example, to measure a vibration value generated when the fan is operated.

Or the fan is placed on a vibration bearing table or a sucker, and the acceleration gauge is arranged on the bearing table or the sucker to measure the vibration value generated when the fan runs.

In addition, the acceleration gauge is arranged in a rigid clamp, and the rigid clamp is used for clamping the fan to measure the vibration value generated when the fan runs.

However, the adhesion or locking method of the accelerometer will cause the operation of removing the adhesive and limiting the object to be measured with a suitable locking hole or increasing the quality of the measuring path, resulting in the measuring error of the quality effect, and the rigid clamp will not only have the effect of the quality effect but also cause the error of the measured value due to the change of the surface shape of the object to be measured and the position of the clamping contact point of the clamp, which is the direction in which the inventors of the present application and the related manufacturers engaged in the industry need to research and improve.

Disclosure of Invention

In order to solve the above problems, an object of the present invention is to provide a spring top post of a fan detection tool and the fan detection tool, wherein a fan is suspended in a clamping manner to enable the fan to be in a suspended position, so as to measure a fan vibration signal during operation of the fan.

The invention aims to provide a spring top column of a fan detection jig and the fan detection jig, wherein the soft pad with proper hardness is in local contact with an object to be detected, and errors of measurement values caused by the influence of the position change of a clamping contact point of the jig are reduced.

Another objective of the present invention is to provide a fan testing fixture, which has a fixed side base having a plurality of positioning portions arranged at intervals, wherein the distance between the positioning portions and a movable side base is adjustable from near to far.

Another objective of the present invention is to provide a fan testing fixture, which has a movable side base connected to a displacement module to move back relative to a fixed side base, and a single fan or a series of fans with different thicknesses are clamped between the fixed side base and the movable side base by the displacement module.

To achieve the above object, the present invention provides a spring top post of a fan testing fixture, for clamping and suspending at least one fan having a plurality of mounting holes, wherein the spring top post comprises:

a front housing having a first front end and a first rear end and a chamber, the first front end covering a soft pad surface to contact a fan frame of the fan, and a needle penetrating the soft pad and protruding from the first front end to fit the fan mounting hole, the chamber being located between the first front end and the first rear end for accommodating a vibration sensor;

the rear shell is arranged behind the front shell at intervals and is provided with a second front end and a second rear end, the second front end faces the first rear end, and the second rear end is used for connecting a jig group;

the elastic element is connected between the front shell and the rear shell and is provided with a first connecting end, a second connecting end and a hollow channel, the first connecting end is connected with the first rear end of the front shell, the second connecting end is connected with the second front end of the rear shell, and the hollow channel penetrates through the first connecting end and extends to the second connecting end.

Fan detection tool's spring fore-set, wherein: the front shell is provided with at least one through hole to be communicated with the containing chamber, and at least one supporting piece is provided with a top end to penetrate the containing chamber from the through hole to be abutted against the vibration sensor; the first rear end of the front shell is provided with a rear convex body to protrude to the hollow channel of the first connecting end of the elastic element, a rear convex wall protrudes from an outer edge of the first rear end and is positioned on the periphery of the rear convex body, and the first connecting end of the elastic element is positioned between the rear convex body and the rear convex wall.

Fan detection tool's spring fore-set, wherein: the second front end of the back shell is provided with a front convex body which corresponds to the back convex body of the front shell at intervals, the front convex body protrudes to the hollow channel of the second connecting end of the elastic element, a front convex wall protrudes from the outer edge of the second front end and is positioned on the periphery of the front convex body, and the second connecting end of the elastic element is positioned between the front convex body and the front convex wall.

Fan detection tool's spring fore-set, wherein: the rear convex body of the front shell is a conical body with a conical end, and the front convex body of the rear shell is a hollow cylinder with a shaft hole corresponding to the conical end of the rear convex body of the front shell.

Fan detection tool's spring fore-set, wherein: the vibration sensor has a signal connector for connecting a signal line.

To achieve the above object, the present invention further provides a fan testing fixture for testing at least one fan having a plurality of mounting holes, the testing fixture comprising:

a jig set having a plurality of spring posts for clamping both sides of the fan, each spring post comprising:

a front housing having a first front end and a first rear end and a chamber, the first front end covering a soft pad surface to contact a fan frame of the fan, and a needle penetrating the soft pad and protruding from the first front end to fit the fan mounting hole, the chamber being located between the first front end and the first rear end;

the rear shell is arranged behind the front shell at intervals and is provided with a second front end and a second rear end, the second front end faces the first rear end of the front shell, and the second rear end is connected with the jig group; and

an elastic element, located between the front shell and the rear shell, and having a first connection end and a second connection end for respectively connecting the first rear end of the front shell and the second front end of the rear shell, a hollow channel located between the first connection end and the second connection end;

wherein, a vibration inductor is respectively arranged in the containing chamber of at least one spring top column at two sides of the fan and is used for measuring a vibration signal when the fan operates.

Fan detection tool, wherein: the jig group is provided with a fixed side base and a movable side base, the movable side base can move forwards or backwards relative to the fixed side base, a suspension space is positioned between the fixed side base and the movable side base, and the second end of the rear shell of the at least one spring support pillar is respectively connected with the fixed side base and the movable side base so as to clamp and suspend the fan in the suspension space.

Fan detection tool, wherein: the fan is arranged in the suspension space, the lifting bracket is connected with a lifting driving module, the lifting driving module comprises a lifting rod and a lifting driving source, one end of the lifting rod is connected with the lifting bracket, and the other end of the lifting rod is connected with the lifting driving source.

Fan detection tool, wherein: the movable side base is provided with a movable base part to be connected with a telescopic driving module, the telescopic driving module is provided with a telescopic rod group, a telescopic driving source and a connecting rod group, the connecting rod group is provided with two long straight rods and a transverse rod, the two long straight rods are arranged in parallel, one end of each long straight rod is connected with the movable base part, the other end of each long straight rod is connected with the transverse rod, one end of the telescopic rod group is connected with the transverse rod, and the other end of the telescopic rod group is connected with the telescopic driving source.

Fan detection tool, wherein: the movable base part is provided with two shaft holes for sleeving two long straight rods of the telescopic driving module, the movable base part is connected with a displacement module, the displacement module is positioned between the telescopic driving module and the movable base part, the displacement module is provided with a fixing part, the fixing part is positioned between the movable base part and a transverse rod of the telescopic driving module, and at least one elastic unit is connected between the movable base part and the fixing part.

Fan detection tool, wherein: the fixed side base is provided with a fixed base part, the fixed base part is provided with a plurality of positioning parts which are arranged at intervals, and the distance between each positioning part and the movable side base is from near to far so as to adjust the interval distance between the fixed side base and the movable side base.

Fan detection tool, wherein: the front shell is provided with at least one through hole to be communicated with the containing chamber, and at least one supporting piece is provided with a top end which penetrates into the containing chamber from the through hole and is abutted against the vibration sensor; the first rear end of the front shell is provided with a rear convex body which protrudes to the hollow channel of one connecting end of the elastic element, a rear convex wall protrudes from an outer edge of the first rear end and is positioned on the periphery of the rear convex body, and the first connecting end of the elastic element is positioned between the rear convex body and the rear convex wall.

Fan detection tool, wherein: the second front end of the back shell is provided with a front convex body which corresponds to the back convex body of the front shell at intervals, the front convex body protrudes to the hollow channel of the other connecting end of the elastic element, a front convex wall protrudes from the outer edge of the second front end and is positioned on the periphery of the front convex body, and the second connecting end of the elastic element is positioned between the front convex body and the front convex wall.

Fan detection tool, wherein: the rear convex body of the front shell is a conical body with a conical end, and the front convex body of the rear shell is a hollow cylinder and is provided with a shaft hole, and the shaft hole corresponds to the conical end of the rear convex body.

Fan detection tool, wherein: each vibration sensor has a signal connector for connecting a signal line.

The invention suspends a fan by the clamping of the at least one spring top column, so that the fan is in a suspended position and further measures the fan vibration signal when the fan operates; and the distance between the vibration sensor and the fan to be measured is shortened, so that the vibration state of the fan during operation can be measured in a short distance, and further a non-doped extra interference fan vibration signal is obtained. Moreover, the soft pad of the at least one spring support column provides proper hardness to be locally contacted with the tested fan, so that errors of measured values caused by the influence of position changes of clamping contact points of the jig are reduced.

Drawings

FIGS. 1A-1D are exploded and assembled views of a spring loaded prop with a vibration sensor according to the present invention;

FIGS. 2A-2C are schematic views of a fan testing fixture according to the present invention;

FIG. 2D is an enlarged partial schematic view of FIG. 2C;

FIG. 3 is a schematic view illustrating a fan vibration signal measured by the fan testing jig of the present invention.

Description of reference numerals: a spring top post 10; a front case 11; a first front end 111; a first back end 112; a rear projection 1121; a tapered end 11211; a rear raised wall 1122; a chamber 113; a soft pad 114; a needle 115; a perforation 116; a rear housing 12; a second front end 121; a front protrusion 1211; a shaft hole 12111; a front convex wall 1212; a second back end 122; an elastic member 13; a first connection end 131; a second connection end 132; a hollow channel 133; a vibration sensor 15; a signal connector 151; a signal line 16; a support member 17; a top end 171; a jig group 20; a fixed-side base 21; a fixed base 211; a positioning portion 2111; a movable-side base 22; a movable base 221; shaft hole 2211; a suspension space 23; a telescopic drive module 24; a telescopic bar group 241; a telescopic drive source 242; a connecting rod group 243; a long straight bar 2431; a transverse bar 2432; a lifting bracket 25; the elevation driving module 251; a lifting rod 2511; an elevation drive source 2512; a displacement module 26; a fixing portion 261; an elastic unit 262; a fan 30; a fan frame 31; an air intake side 311; an air outlet side 312; fan mounting holes 32; a signal acquisition card 41; and a computer 4.

Detailed Description

The above objects, together with the structural and functional features thereof, are accomplished by the preferred embodiments according to the accompanying drawings.

In the present invention, unless otherwise expressly specified or limited, the terms "disposed," "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected or detachably connected; may be a mechanical connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood according to specific situations by those having ordinary skill in the art.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "plurality" or "plural" means two or more unless specifically defined otherwise.

Fig. 1A to 1D are exploded and assembled views of a spring top post with a vibration sensor according to the present invention. As shown in the drawings, a spring top post 10 is mounted on a fan testing fixture for holding and suspending a fan to be tested, and includes a front casing 11 and a rear casing 12 which are two-section-type and arranged in front and rear, and an elastic element 13 connected between the front casing 11 and the rear casing 12.

The front housing 11 has a first front end 111 and a first rear end 112, and a chamber 113, the chamber 113 is located between the first front end 111 and the first rear end 112 for accommodating a vibration sensor 15, the vibration sensor 15 is, for example, an accelerometer, and the vibration sensor 15 has a signal connector 151 connected to a signal line 16. The front housing 11 is provided with at least one through hole 116 communicating with the chamber 113, and at least one support member 17, such as a screw, having a tip 171 screwed from the through hole 116 into the chamber 113 to abut the vibration sensor 15 to fix the vibration sensor 15 in the chamber 113.

The first front end 111 of the front case 11 is covered with a soft pad 114, and a needle 115 protrudes from the first front end 111 through the soft pad 114. The needle 115 is inserted into a fan mounting hole of a fan frame of the fan. Furthermore, the soft pad 114 is a soft rubber pad, which is made of a material such as but not limited to rubber, plastic, or silica gel, so as to contact the fan frame of the fan to clamp the fan more tightly. Thus, the vibration generated during the operation of the fan can be transmitted to the spring top post 10 through the soft pad 14 as undamaged as possible and measured by the vibration sensor 15. The surface of the soft pad 114 in this embodiment is shown as a plane, and the surface of the soft pad 114 in the other embodiment is formed with a plurality of ripples arranged concentrically.

The first rear end 112 of the front housing 11 is provided with a rear protrusion 1121 such as a cone having a tapered end 11211 protruding rearward, and a rear protrusion wall 1122 protruding from an outer edge of the first rear end 112 and located at a periphery of the rear protrusion 1121.

The rear housing 12 is disposed behind the front housing 11 at an interval, and has a second front end 121 and a second rear end 122, the second front end 121 faces the first rear end 112, and the second rear end 122 is used to connect a tool set of a detection tool. The second front end 121 is provided with a front protrusion 1211 spaced from the rear protrusion 1121 of the front housing 11, and the front protrusion 1211 is a hollow cylinder having a shaft hole 12111 corresponding to the tapered end 11211 of the rear protrusion 1121 of the front housing 11. A front projection 1212 protrudes from an outer edge of the second front end 121 and is located at an outer periphery of the front projection 1211.

The elastic element 13 is, for example, a spring, and has a first connection end 131 and a second connection end 132, and a hollow channel 133 extends from the first connection end 131 to the second connection end 132. The first connecting end 131 and the second connecting end 132 are connected to the first rear end 112 of the front housing 11 and the second front end 121 of the rear housing 12 respectively through connecting means. In detail, the first connection end 131 is located between the rear protrusion 1121 and the rear protrusion wall 1122, so that the rear protrusion 1121 protrudes into the hollow channel 133 of the first connection end 131 of the elastic element 13. The second connecting end 132 is located between the front protrusion 1211 and the front protrusion 1212, so that the front protrusion 1211 protrudes into the hollow channel 133 of the second connecting end 132 of the elastic element 13. The connecting means is, for example, but not limited to, welding, screw-locking, or gluing.

Please refer to fig. 2A-2D for a schematic view of a fan testing fixture according to the present invention; FIG. 3 is a schematic view illustrating a fan vibration signal measured by the fan testing jig of the present invention. As shown in the drawings, referring to fig. 1A-1D, the fan testing fixture of the present invention includes a fixture set 20 disposed on a same plane (e.g., a workbench, etc.), the fixture set 20 has a fixed side base 21 and a movable side base 22 moving forward or backward relative to the fixed side base 21, and a suspension space 23 is located between the fixed side base 21 and the movable side base 22. A lifting bracket 25 is provided below the suspension space 23. The fixed side base 21 and the movable side base 22 are respectively provided with a plurality of spring posts 10.

The fixed side base 21 has a fixed base 211 perpendicular to the fixed side base 21, the fixed base 211 has a plurality of positioning portions 2111 arranged at intervals, which shows a plurality of rows of fixing lock holes, and the distance between each positioning portion 2111 and the movable side base 22 is from near to far. The fixed side base 21 and the movable side base 22 are connected to the plane by any of different positioning portions to adjust a spacing distance therebetween.

The movable side base 22 has a movable base 221 connected to a telescopic driving module 24, the telescopic driving module 24 has a telescopic rod set 241, a telescopic driving source 242 and a connecting rod set 243, the connecting rod set 243 has two long straight rods 2431 and a transverse rod 2432, the two long straight rods 2431 are arranged in parallel, one end of each long straight rod 2431 is connected to the movable base 221, the other end of each long straight rod 2431 is connected to the transverse rod 2432, one end of each telescopic rod set 241 is connected to the transverse rod 2432, the other end of each telescopic rod set is connected to the telescopic driving source 242, and the telescopic driving source 242 drives the telescopic rod set 241 to move telescopically. Furthermore, the connecting rod set 243 is linked with the telescopic rod set 241, so that the two long straight rods 2431 drive the movable side base 22 to move forward or backward toward the fixed side base 21.

The movable base 221 has two shaft holes 2211, which are sleeved on the two long straight rods 2431 of the telescopic driving module 24 and move along with the two long straight rods 2431. The movable base 221 is connected to a displacement module 26, the displacement module 26 is located between the telescopic driving module 24 and the movable base 221, the displacement module 26 has a fixing portion 261 disposed on the plane and located between the movable base 221 and the transverse rod 2432 of the telescopic driving module 24, at least one elastic unit 262, such as a spring, is connected between the movable base 221 and the fixing portion 261, and in this figure, two elastic units 262 (i.e., springs) are disposed between the movable base 221 and the fixing portion 261 in parallel. In addition, a guiding groove and a rail are respectively disposed on the bottom surface of the movable base 221 and the plane (e.g., a table) for engaging with each other, so that the movable base 221 can move forward or backward along the rail.

After the movable side base 22 moves forward to a predetermined position toward the fixed side base 21 along with the two long straight bars 2431, the two axis holes 2211 of the movable base 221 move backward slightly along the two long straight bars 2431, and the elastic unit 262 is compressed to move the movable side base 22 a short distance in a direction opposite to the fixed side base 21, and then the elastic unit 262 generates an elastic force to the movable side base 22. By such an operation, a single fan or a serial fan having different thicknesses can be held between the fixed-side base 21 and the movable-side base 22.

The lifting bracket 25 is connected to a lifting driving module 251, the lifting driving module 251 includes a lifting rod 2511 and a lifting driving source 2512, one end of the lifting rod 2511 is connected to the lifting bracket 25, and the other end is connected to the lifting driving source 2512.

In some embodiments, the extension driving source 242 and the lifting driving source 2512 are, for example, but not limited to, pneumatic motors, hydraulic motors, or electric motors.

Specifically, the fixed-side base 21 and the movable-side base 22 are provided with four symmetrical spring jacks 10, respectively. The at least one spring top post 10 is fixed on the fixed side base 21 and the movable side base 22 by the second rear end 122 of the rear housing 12. In this embodiment, the second rear ends 122 of four spring posts 10 are fastened to the fixed side base 21 and the second rear ends 122 of the other four spring posts 10 are fastened to the movable side base 22 by screws. In addition, a vibration sensor 15 is respectively accommodated in the chamber 113 of at least one spring top post 10 of the fixed side base 21 and the chamber 113 of at least one spring top post 10 of the movable side base 22 for measuring a vibration signal when a fan is operated.

Generally, a fan 30 to be measured has a fan frame 31 defining an air inlet side 311 and an air outlet side 312 (see fig. 3), and fan mounting holes 32 are respectively formed at four corners of the fan frame 31.

In operation, the fan 30 is first placed on the lifting bracket 25, the fan 30, such as a single fan or a series of fans, is lifted to the hanging space 23 by the lifting bracket 25, the movable side base 22 is moved forward toward the fixed side base 21 and is respectively moved from the air inlet side and the air outlet side of the fan 30 to the fan mounting holes 32 corresponding to the four corners of the fan frame 31 by the respective spring top posts 10, and then the fan frame 31 is clamped, and the lifting bracket 25 is then lowered to the original position once the fan 30 is clamped. In detail, the needle 115 of the first front end 111 of the front housing 11 of each spring prop 10 is inserted into the fan mounting holes 32 at four corners of the fan frame 31, and the soft pad 114 is in surface contact with the fan frame 31 of the fan 30, so that the fan 30 is suspended in the suspension space 23 by the at least one spring prop 10. The fan 30 in the suspension space 23 is then controlled to operate at a test revolution (e.g., 1 ten thousand revolutions), and a vibration signal (e.g., a vibration acceleration signal) generated at the test revolution of the fan 30 is measured at a short distance by a vibration sensor 15 provided in the spring top post 10, thereby obtaining a fan vibration signal.

Since the elastic element 13 of the pogo pin 10 is disposed between the front housing 11 and the rear housing 12, the external interference (e.g. external vibration) is blocked from being transmitted from the fixed-side base 21 and the movable-side base 22 to the vibration sensor 15, and the tested fan 30 is in a suspended state, so that a fan vibration signal without additional interference can be effectively obtained.

Please refer to fig. 3, which is a schematic diagram illustrating the fan vibration signal measured by the fan detecting tool of the present invention. As shown in the figure, one end of the signal line 16 is connected to the signal connector 151 of the vibration sensor 15, and the other end is connected to a signal acquisition card 41, and a computer 42 obtains a vibration value (e.g., vibration acceleration value) of the fan 30 by means of the signal acquisition card 41.

The invention clamps and suspends a fan 30 by at least one spring top post 10, so that the fan 30 is in a suspended position and further measures the fan vibration signal when the fan operates; and the distance between the vibration sensor 15 and the fan 30 to be measured is shortened, so that the vibration state of the fan 30 during operation can be measured in a short distance, and further a non-doped extra interference fan vibration signal can be obtained. Furthermore, the soft pad 114 of the at least one spring top post 10 provides suitable hardness and softness for local contact with the fan 30 to be tested, thereby reducing errors in measurement values caused by variations in the positions of the clamping contact points of the jig.

The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. The utility model provides a fan detection tool's spring fore-set for the centre gripping suspends in midair and has at least a fan of plural number mounting hole, its characterized in that, this spring fore-set includes:

2. The spring ejection column of the fan detection jig as claimed in claim 1, wherein: the front shell is provided with at least one through hole to be communicated with the containing chamber, and at least one supporting piece is provided with a top end to penetrate the containing chamber from the through hole to be abutted against the vibration sensor; the first rear end of the front shell is provided with a rear convex body to protrude to the hollow channel of the first connecting end of the elastic element, a rear convex wall protrudes from an outer edge of the first rear end and is positioned on the periphery of the rear convex body, and the first connecting end of the elastic element is positioned between the rear convex body and the rear convex wall.

3. The spring ejection column of the fan detection jig as claimed in claim 2, wherein: the second front end of the back shell is provided with a front convex body which corresponds to the back convex body of the front shell at intervals, the front convex body protrudes to the hollow channel of the second connecting end of the elastic element, a front convex wall protrudes from the outer edge of the second front end and is positioned on the periphery of the front convex body, and the second connecting end of the elastic element is positioned between the front convex body and the front convex wall.

4. The spring ejection column of the fan detection jig as claimed in claim 3, wherein: the rear convex body of the front shell is a conical body with a conical end, and the front convex body of the rear shell is a hollow cylinder with a shaft hole corresponding to the conical end of the rear convex body of the front shell.

5. The spring ejection column of the fan detection jig as claimed in claim 1, wherein: the vibration sensor has a signal connector for connecting a signal line.

6. The utility model provides a fan detection tool for detect at least a fan that has a plurality of mounting hole, its characterized in that, this detection tool includes:

7. The fan testing jig of claim 6, wherein: the jig group is provided with a fixed side base and a movable side base, the movable side base can move forwards or backwards relative to the fixed side base, a suspension space is positioned between the fixed side base and the movable side base, and the second end of the rear shell of the at least one spring support pillar is respectively connected with the fixed side base and the movable side base so as to clamp and suspend the fan in the suspension space.

8. The fan testing jig of claim 7, wherein: the fan is arranged in the suspension space, the lifting bracket is connected with a lifting driving module, the lifting driving module comprises a lifting rod and a lifting driving source, one end of the lifting rod is connected with the lifting bracket, and the other end of the lifting rod is connected with the lifting driving source.

9. The fan testing jig of claim 7, wherein: the movable side base is provided with a movable base part to be connected with a telescopic driving module, the telescopic driving module is provided with a telescopic rod group, a telescopic driving source and a connecting rod group, the connecting rod group is provided with two long straight rods and a transverse rod, the two long straight rods are arranged in parallel, one end of each long straight rod is connected with the movable base part, the other end of each long straight rod is connected with the transverse rod, one end of the telescopic rod group is connected with the transverse rod, and the other end of the telescopic rod group is connected with the telescopic driving source.

10. The fan testing jig of claim 9, wherein: the movable base part is provided with two shaft holes for sleeving two long straight rods of the telescopic driving module, the movable base part is connected with a displacement module, the displacement module is positioned between the telescopic driving module and the movable base part, the displacement module is provided with a fixing part, the fixing part is positioned between the movable base part and a transverse rod of the telescopic driving module, and at least one elastic unit is connected between the movable base part and the fixing part.

11. The fan testing jig of claim 7, wherein: the fixed side base is provided with a fixed base part, the fixed base part is provided with a plurality of positioning parts which are arranged at intervals, and the distance between each positioning part and the movable side base is from near to far so as to adjust the interval distance between the fixed side base and the movable side base.

12. The fan testing jig of claim 6, wherein: the front shell is provided with at least one through hole to be communicated with the containing chamber, and at least one supporting piece is provided with a top end which penetrates into the containing chamber from the through hole and is abutted against the vibration sensor; the first rear end of the front shell is provided with a rear convex body which protrudes to the hollow channel of one connecting end of the elastic element, a rear convex wall protrudes from an outer edge of the first rear end and is positioned on the periphery of the rear convex body, and the first connecting end of the elastic element is positioned between the rear convex body and the rear convex wall.

13. The fan testing jig of claim 12, wherein: the second front end of the back shell is provided with a front convex body which corresponds to the back convex body of the front shell at intervals, the front convex body protrudes to the hollow channel of the other connecting end of the elastic element, a front convex wall protrudes from the outer edge of the second front end and is positioned on the periphery of the front convex body, and the second connecting end of the elastic element is positioned between the front convex body and the front convex wall.

14. The fan testing jig of claim 13, wherein: the rear convex body of the front shell is a conical body with a conical end, and the front convex body of the rear shell is a hollow cylinder and is provided with a shaft hole, and the shaft hole corresponds to the conical end of the rear convex body.

15. The fan testing jig of claim 6, wherein: each vibration sensor has a signal connector for connecting a signal line.