CN211453709U

CN211453709U - Workbench suitable for sound meter filter test

Info

Publication number: CN211453709U
Application number: CN201922321871.4U
Authority: CN
Inventors: 秦国鹏; 杨涛; 董元旦
Original assignee: Chengdu Pinnacle Microwave Co Ltd
Current assignee: Chengdu Pinnacle Microwave Co Ltd
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2020-09-08
Anticipated expiration: 2029-12-20

Abstract

The utility model relates to a sound table wave filter tests technical field, especially indicates to be applicable to the workstation of sound table wave filter test, it includes: a supporting seat; the fixing seat is fixedly arranged on the supporting seat and used for fixing the circuit board, and the fixing seat is provided with a cable connector electrically connected with the circuit board on the fixing seat; the connecting piece is fixedly arranged on the supporting seat and positioned above the fixed seat; the guide sleeve is fixedly connected with the connecting piece; the sliding column is in sliding fit with the guide sleeve and slides along the direction close to the fixed seat, and an insulating block is arranged at the lower end of the sliding column; the lower end of the connecting rod pushes the sliding column to move downwards when the lower pressing rod is rotated downwards; and the stop component is connected with the connecting piece and used for stopping the downward pressing rod from rotating upwards. So that no use mark is left on the tested acoustic surface filter.

Description

Workbench suitable for sound meter filter test

Technical Field

The utility model belongs to the technical field of the sound table wave filter test technique and specifically relates to indicate the workstation that is applicable to sound table wave filter test.

Background

The acoustic surface wave filter (usually abbreviated as SAW) mainly functions on the principle that an input signal of an electric wave is converted into mechanical energy by using the piezoelectric property of a piezoelectric material and an input and output Transducer (Transducer), and the mechanical energy is converted into an electric signal after being processed, so that the aims of filtering unnecessary signals and noises and improving the signal receiving quality are fulfilled.

When the acoustic surface filter is produced, one of the batch of acoustic surface filters needs to be tested firstly, then the product can be delivered to a customer, and most of the existing testing methods are that the pin part of the acoustic surface filter is directly welded with a lead and then is directly connected with a computer through the lead and then the test is carried out.

However, even if the soldering tin is melted and peeled off after the test is finished, the test method can leave using traces on the acoustic surface filter, so that the acoustic surface filter after the test can only be used as a waste product for treatment, and because the main body of the acoustic surface filter is very small, the welding is time-consuming and labor-consuming, and errors are easy to occur.

Disclosure of Invention

The utility model aims to solve the technical problem that a workstation suitable for the test of sound table wave filter is provided, has the function of connecting sound table wave filter and computer, is convenient for test the sound table wave filter, can not leave the use vestige on the sound table wave filter after the test.

In order to solve the technical problem, the embodiment of the utility model provides a workstation suitable for the test of sound table wave filter has adopted following technical scheme:

a stage adapted for acoustic surface filter testing, comprising:

a supporting seat;

the fixing seat is fixedly arranged on the supporting seat and used for fixing the circuit board, and the fixing seat is provided with a cable connector electrically connected with the circuit board on the fixing seat;

the connecting piece is fixedly arranged on the supporting seat and positioned above the fixed seat;

the guide sleeve is fixedly connected with the connecting piece;

the sliding column is in sliding fit with the guide sleeve and slides along the direction close to the fixed seat, and an insulating block is arranged at the lower end of the sliding column;

the lower end of the connecting rod pushes the sliding column to move downwards when the lower pressing rod is rotated downwards;

and the stop component is connected with the connecting piece and used for stopping the downward pressing rod from rotating upwards.

Furthermore, the stop assembly comprises a positioning rod, a return spring sleeved on the positioning rod, and a stop block and a release ring which are respectively arranged at two ends of the positioning rod;

the connecting piece is provided with a through hole, the stop block penetrates through the through hole to be connected with the lower pressing rod, a limit block is arranged on one side of the connecting piece, which is far away from the lower pressing rod, the positioning rod is connected with the limit block in a sliding mode, and the reset spring is clamped between the limit block and the stop block;

one side of the lower pressing rod, which is close to the connecting piece, is provided with a circular arc-shaped stop groove in sliding fit with the stop block, when the lower pressing rod rotates downwards, the stop block slides in the stop groove, the stop groove is sequentially provided with a plurality of guide stop parts along the sliding direction of the stop block, each guide stop part gradually inclines towards the direction close to the opening of the stop groove along the sliding direction of the stop block, and the cross section of each guide stop part is triangular.

Further, the traveller includes upper prop section and lower prop section, the upper prop section is connected to the connecting rod, the lateral wall of upper prop section can be dismantled and be connected with the spacing bolt that is used for butt uide bushing upper end, the vertical direction interval of upper prop section is equipped with a plurality of jacks with spacing bolt grafting complex.

Further, the lower extreme of lower prop section is equipped with buffering spout and upper end and buffering spout sliding connection's buffering post, be equipped with top suspension piece, lower suspension piece and buffer spring on the buffering post, buffer spring cover locates on the buffering post, and is located the top suspension piece and down between the suspension piece, the fixed lower extreme of locating the buffering post of separation blade down, the top suspension piece be located outside the buffering spout and with buffering post sliding connection, the lower extreme of buffering post is connected to the collets.

Furthermore, a connecting section is connected between the upper column section and the lower column section, an adjusting sliding groove is formed in the direction of the upper column section, the connecting section and the lower column section, a first notch communicated with the adjusting sliding groove is formed in two opposite sides of the connecting section, an adjusting rod is arranged in the adjusting sliding groove in a sliding mode and is a rectangular rod, external threads are respectively arranged on two sides, close to the first notch, of the adjusting rod, an adjusting rotary drum is sleeved outside the connecting section, an internal thread matched with the external threads of the adjusting rod is formed in the inner wall of the adjusting rotary drum, the adjusting rod slides along the adjusting sliding groove when the adjusting rotary drum is rotated, a connecting groove communicated with the adjusting sliding groove is formed in the buffering column, second notches are formed in two opposite side walls of the buffering column, and the lower end of the adjusting rod extends into the connecting groove and is fixedly connected with.

Furthermore, the side wall of the adjusting rotary drum is circumferentially provided with first scales, the upper end of the adjusting rod is provided with second scales along the vertical direction, and the upper column section is provided with an observation window for observing the second scales.

Further, the lower extreme of bumping post is equipped with connecting portion, connecting portion and insulating block threaded connection.

Further, the insulating block is a rubber block.

Compared with the prior art, the utility model discloses mainly there is following beneficial effect:

when the test platform of the utility model is used for testing the acoustic meter filter, the circuit board corresponding to the type of the acoustic meter filter is placed on the fixed seat, then the pin of the acoustic meter filter is placed on the contact of the circuit board, then the lower pressure rod is rotated downwards, the lower pressure rod drives the connecting rod to rotate downwards, because the sliding column is in sliding fit with the guide sleeve, the connecting rod pushes the sliding column to move downwards along the guide sleeve when the connecting rod rotates, until the insulating block at the lower end of the sliding column presses against the pin of the acoustic meter filter and the contact of the circuit board, the pin of the acoustic meter filter and the contact of the circuit board are fixed together, then the acoustic meter filter can be tested by adopting a cable connection cable joint and a computer, after the test is finished, the sliding column is lifted, the pin of the acoustic meter filter and the circuit board can be separated, no test trace can be left on the pin of the acoustic, make this sound table wave filter need not regard as waste product treatment, reduce the waste of product, in addition, the utility model discloses a test bench is convenient for connect the pin and the circuit board of sound table wave filter, compares the welded mode, and efficiency is faster. And the condition that the staff electrocuted can be avoided taking place in the setting of insulating block.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic perspective view of an embodiment of the present invention;

fig. 2 is an exploded schematic view of a connecting member and a slide column according to an embodiment of the present invention;

FIG. 3 is a schematic view of a connection structure of a positioning rod and a connecting member according to an embodiment of the present invention;

fig. 4 is a cross-sectional view of a strut in accordance with an embodiment of the present invention;

fig. 5 is a perspective view of a slide column according to an embodiment of the present invention.

Description of reference numerals: 10. a supporting seat; 20. a fixed seat; 21. a cable joint; 22. a bolt; 30. a connecting member; 31. perforating; 32. a limiting block; 40. a guide sleeve; 50. a traveler; 51. an upper column section; 511. a jack; 512. an observation window; 52. a lower column section; 521. a buffer chute; 53. a limiting bolt; 54. a connecting section; 541. a first notch; 55. adjusting the sliding chute; 56. adjusting the rotating cylinder; 561. a first scale; 57. adjusting a rod; 571. a second scale; 61. a lower pressure lever; 611. a stopper groove; 612. a guide stopper; 62. a connecting rod; 71. positioning a rod; 72. a return spring; 73. a stopper block; 74. releasing the ring; 80. an insulating block; 90. a buffer column; 91. a blocking piece is arranged; 92. a lower baffle plate; 93. a buffer spring; 94. connecting grooves; 95. a second notch; 96. a connecting portion.

Detailed Description

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs; the terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention; the terms "including" and "having," and any variations thereof, in the description and claims of the invention and the above description of the drawings are intended to cover non-exclusive inclusions. The terms "first," "second," and the like in the description and in the claims, or in the drawings, are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

Workstation suitable for acoustic surface filter test, as shown in fig. 1, it includes supporting seat 10, the fixed fixing base 20 that is used for fixed circuit board on locating supporting seat 10, fixed connecting piece 30 that just is located the fixing base 20 top on locating supporting seat 10, uide bushing 40 with connecting piece 30 fixed connection and be vertical setting, with uide bushing 40 sliding fit and along the vertical gliding traveller 50 of the direction that is close to fixing base 20, a depression bar subassembly for driving traveller 50 vertical motion and be connected with connecting piece 30 and be used for blockking depression bar 61 pivoted locking subassembly down.

The side of the fixing base 20 is provided with a cable connector 21 electrically connected to the circuit board on the fixing base 20, and the lower end of the sliding column 50 is provided with an insulating block 80. The compression bar assembly comprises a lower compression bar 61 with the lower end rotatably connected with the connecting piece 30 and a connecting rod 62 with two ends rotatably connected with the upper end of the sliding column 50 and the lower compression bar 61 respectively, the connecting rod 62 is connected with the middle part of the lower compression bar 61, and when the lower compression bar 61 is rotated downwards, the lower end of the connecting rod 62 pushes the sliding column 50 to move downwards.

When the test device is used specifically, a circuit board corresponding to the type of the acoustic meter filter is placed on the fixed seat 20, then pins of the acoustic meter filter are placed on contacts of the circuit board, then the lower pressing rod 61 is rotated downwards, so that the lower pressing rod 61 drives the connecting rod 62 to rotate downwards, the slide column 50 is in sliding fit with the guide sleeve 40, then the connecting rod 62 pushes the slide column 50 to move downwards along the guide sleeve 40 when the connecting rod 62 rotates until the insulating block 80 at the lower end of the slide column 50 is pressed against the pins of the acoustic meter filter and the contacts of the circuit board, so that the pins of the acoustic meter filter and the contacts of the circuit board are fixed together, then the cable connector 21 and a computer are connected by a cable to test the acoustic meter filter, after the test is finished, the slide column 50 is lifted, so that the pins of the acoustic meter filter and the circuit board can be separated without leaving test traces on the pins of the acoustic meter filter, so that the, reduce the waste of product, in addition, the utility model discloses a test bench is convenient for connect the pin and the circuit board of acoustic surface wave filter, compares welded mode, and efficiency is faster. And the arrangement of the insulating block 80 can avoid the condition that the electric shock of the working personnel occurs.

Specifically, the connecting rod 62 is an arc-shaped rod, so that the lower pressing rod 61 and the slide column 50 can be located on the same vertical plane. The circuit board is locked to the holder 20 by means of bolts 22.

The stopping assembly includes a positioning rod 71, a return spring 72 sleeved on the positioning rod 71, and a stopping block 73 and a releasing ring 74 respectively disposed at two ends of the positioning rod 71. The connecting piece 30 is provided with a through hole 31, the stop block 73 penetrates through the through hole 31 to be connected with the lower pressing rod 61, one side of the connecting piece 30, which is far away from the lower pressing rod 61, is provided with a limit block 32, the locating rod 71 is in sliding connection with the limit block 32, and the reset spring 72 is clamped between the limit block 32 and the stop block 73. One side of the lower pressing rod 61 close to the connecting piece 30 is provided with a circular arc-shaped stop groove 611 in sliding fit with the stop block 73, when the lower pressing rod 61 rotates downwards, the stop block 73 slides in the stop groove 611, the stop groove 611 is sequentially provided with a plurality of guide stop parts 612 along the sliding direction of the stop block 73, each guide stop part 612 gradually inclines towards the direction close to the opening of the stop groove 611 along the sliding direction of the stop block 73, and the cross section of each guide stop part 612 is triangular.

The utility model is provided with the return spring 72, because the stop block 73 is arranged between the return spring 72 and the limit block 32, the stop block 73 is subject to the elastic force of the return spring 72, and has the force moving towards the direction of the stop groove 611, so that the stop block 73 is always kept in the state of abutting against the bottom of the stop groove 611, under the condition of no external force, the stop block 73 is not easy to be separated from the stop groove 611, because the guide stop part 612 is arranged in the stop groove 611, and the guide stop part 612 is gradually inclined towards the direction close to the opening of the stop groove 611 along the sliding direction of the stop block 73, so that the adjacent guide stop parts 612 are in step connection, when the stop block 73 slides to the next guide stop part 612 along the inclined direction of the guide stop part 612, because the stop block 73 is subject to the blocking effect of the side wall of the previous guide stop part 612, and can not move reversely, so that the working personnel can press the insulation block 80 to the pin of the acoustic, the hand does not need to press the pressing rod 61 continuously, when the pressing rod 61 is to be rotated upwards, the release ring 74 is pulled, the positioning rod 71 slides along the direction away from the stop groove 611, the stop block 73 is separated from the stop groove 611, the stop block 73 does not prevent the pressing rod 61 from rotating upwards, after the pressing rod 61 rotates to the corresponding position, the release ring 74 is loosened, the stop block 73 is pushed into the stop groove 611 again under the action of the return spring 72, automatic reset of the stop block 73 is realized, a worker does not need to push the positioning rod 71 to reset again, and the work efficiency is improved.

As shown in fig. 1 and 2, the sliding column 50 includes an upper column section 51 and a lower column section 52, the connecting rod 62 connects the upper column section 51, a limit bolt 53 for abutting against the upper end of the guide sleeve 40 is detachably connected to a side wall of the upper column section 51, and a plurality of insertion holes 511 which are inserted and matched with the limit bolt 53 are arranged in the upper column section 51 at intervals in the vertical direction.

The setting of spacing bolt 53 and a plurality of jack 511 makes things convenient for the staff to adjust the length of pushing down of traveller 50 according to the model of phonometer wave filter and circuit board, avoids traveller 50 excessively to push down and damages phonometer wave filter and circuit board.

As shown in fig. 4, in order to avoid rigid collision between the insulating block 80 and the acoustic surface filter and the circuit board, the lower end of the lower column section 52 is provided with a buffer chute 521 and a buffer column 90 with the upper end slidably connected to the buffer chute 521, the buffer column 90 is provided with an upper baffle 91, a lower baffle 92 and a buffer spring 93, the buffer spring 93 is sleeved on the buffer column 90 and located between the upper baffle 91 and the lower baffle 92, the lower baffle 92 is fixedly arranged at the lower end of the buffer column 90, the upper baffle 91 is located outside the buffer chute 521 and slidably connected to the buffer column 90, and the insulating block 80 is connected to the lower end of the buffer column 90.

As shown in fig. 4 and 5, a connecting section 54 is connected between the upper column section 51 and the lower column section 52, an adjusting sliding groove 55 is formed along the direction of the upper column section 51, the connecting section 54 and the lower column section 52, two opposite sides of the connecting section 54 are provided with a first notch 541 communicated with the adjusting sliding groove 55, an adjusting rod 57 is slidably arranged in the adjusting sliding groove 55, the adjusting rod 57 is a rectangular rod, two sides of the adjusting rod 57 close to the first notch 541 are respectively provided with an external thread (not shown in the figures), the connecting section 54 is externally sleeved with an adjusting drum 56, the inner wall of the adjusting drum 56 is provided with an internal thread matched with the external thread of the adjusting rod 57, when the adjusting drum 56 is rotated, the adjusting rod 57 slides along the adjusting sliding groove 55, the buffer column 90 is provided with a connecting groove 94 communicated with the adjusting sliding groove 55, two opposite side walls of the buffer column 90 are provided with a second, the lower end of the adjusting rod 57 extends into the connecting groove 94 and is fixedly connected with the upper baffle 91 through the second notch 95.

Through setting up above-mentioned structure, when traveller 50 downstream to spacing bolt 53 and uide bushing 40 upper end butt, can adjust rotary drum 56 through rotating, internal thread through adjusting rotary drum 56 and the external screw thread mating reaction of adjusting pole 57, make and adjust pole 57 along adjusting spout 55 downstream, and then make the lower extreme of adjusting pole 57 promote upper stop piece 91 downstream, further make upper stop piece 91 compress buffer spring 93 downwards, make buffer spring 93 exert decurrent pressure to insulating block 80, reach the purpose of adjusting the low pressure between insulating block 80 to the pin of acoustic meter filter and the circuit board, the adjustment mode is simple, play the effect of fine setting to insulating block 80, more be favorable to fixed acoustic meter filter's pin and circuit board contact, and can not harm the pin of acoustic meter filter.

In combination with fig. 1, in order to facilitate the staff to judge the magnitude of the pressure of the insulating block 80 against the circuit board more intuitively, the side wall of the adjusting drum 56 is circumferentially provided with a first scale 561, the upper end of the adjusting rod 57 is provided with a second scale 571 along the vertical direction, the upper column section 51 is provided with an observation window 512 for observing the second scale 571, the observation window 512 is used for observing the second scale 571 and observing the position of the first scale 561 on the adjusting drum 56 to judge the magnitude of the pressure of the insulating block 80, and then the staff can select a proper pressure value to enable the contact between the filter and the circuit board to be tight and not to crush the filter.

As shown in fig. 4, the lower end of the buffer column 90 is provided with a connecting portion 96, and the connecting portion 96 is in threaded connection with the insulating block 80, so that the insulating block 80 can be conveniently mounted, dismounted and maintained. Specifically, the insulating block 80 is a rubber block, which has certain elasticity and is beneficial to protecting the acoustic surface filter and the circuit board from being crushed.

The working principle is as follows:

when the sound meter filter test workbench of the utility model is used for testing the sound meter filter, a circuit board corresponding to the model of the sound meter filter is placed on the fixed seat 20, then the circuit board is locked on the fixed seat 20 by the bolt 22, then the pin of the sound meter filter is placed on the contact of the circuit board, the limit bolt 53 is inserted into the jack 511 with the corresponding height according to the model of the sound meter filter and the circuit board, then the lower press rod 61 is rotated downwards, the lower press rod 61 drives the connecting rod 62 to rotate downwards, because the sliding column 50 is in sliding fit with the guide sleeve 40, the connecting rod 62 pushes the sliding column 50 to move downwards along the guide sleeve 40 when the connecting rod 62 rotates, the sliding column 50 stops moving until the limit bolt 53 abuts against the upper end surface of the guide sleeve 40, at the moment, the insulating block 80 abuts against the pin of the sound meter filter and the contact of the circuit board, the hand pressing the lower press rod, the adjusting drum 56 is rotated, the adjusting rod 57 moves downwards along the adjusting chute 55 by the matching action of the internal thread of the adjusting drum 56 and the external thread of the adjusting rod 57, so that the lower end of the adjusting rod 57 pushes the upper baffle 91 to move downwards, the upper baffle 91 further compresses the buffer spring 93 downwards, the buffer spring 93 applies downward pressure to the insulating block 80, meanwhile, the adjusting drum 56 is rotated while observing the positions of the second scale 571 in the observation window 512 and the first scale 561 on the adjusting drum 56, the low pressure of the insulating block 80 on the acoustic meter filter and the circuit board is judged, when the pressure value reaches a preset value, the adjusting drum 56 is stopped rotating, finally, the cable connector 21 and a computer are connected, the acoustic meter filter can be directly tested, after the test work is finished, the release ring 74 is pulled, so that the positioning rod 71 and the stop block 73 move synchronously, and then make stop block 73 break away from detent groove 611, upwards rotate depression bar 61 down, make depression bar 61 drive traveller 50 upward movement down, and then make insulating block 80 no longer support the pin of voltmeter wave filter, can take away the meter wave filter after the test, this utility model is convenient for test the meter wave filter, and can not leave the vestige on the pin of meter wave filter after the test.

It is to be understood that the above-described embodiments are only some of the embodiments of the present invention, and not all embodiments, and that the appended drawings illustrate preferred embodiments of the present invention, but do not limit the scope of the invention. The present invention may be embodied in many different forms and, on the contrary, these embodiments are provided so that this disclosure will be thorough and complete. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and modifications can be made, and equivalents may be substituted for elements thereof. All utilize the equivalent structure that the content of the utility model discloses a specification and attached drawing was done, direct or indirect application is in other relevant technical field, all is in the same way the utility model discloses within the patent protection scope.

Claims

1. Workstation suitable for acoustic surface filter test, its characterized in that: the method comprises the following steps:

a supporting seat;

the guide sleeve is fixedly connected with the connecting piece;

2. The stage adapted for acoustic surface filter testing of claim 1, wherein: the stop assembly comprises a positioning rod, a return spring sleeved on the positioning rod, and a stop block and a release ring which are respectively arranged at two ends of the positioning rod;

3. The stage adapted for acoustic surface filter testing of claim 1, wherein: the traveller includes upper prop section and lower prop section, the upper prop section is connected to the connecting rod, the lateral wall of upper prop section can be dismantled and be connected with the spacing bolt that is used for butt uide bushing upper end, the vertical direction interval of upper prop section is equipped with a plurality of jacks with spacing bolt grafting complex.

4. The stage adapted for acoustic surface filter testing of claim 3, wherein: the lower extreme of lower prop section is equipped with buffering spout and upper end and buffering spout sliding connection's buffering post, be equipped with top suspension piece, lower baffle and buffer spring on the buffering post, buffer spring cover locates on the buffering post, and is located between top suspension piece and the lower baffle, the fixed lower extreme of locating the buffering post of lower baffle, top suspension piece be located outside the buffering spout and with buffering post sliding connection, the lower extreme of buffering post is connected to the collets.

5. The stage adapted for acoustic surface filter testing of claim 4, wherein: the adjustable buffer column is characterized in that a connecting section is connected between the upper column section and the lower column section, an adjusting chute is formed in the direction of the upper column section, the connecting section and the lower column section, a first notch communicated with the adjusting chute is formed in two opposite sides of the connecting section, an adjusting rod is arranged in the adjusting chute in a sliding mode and is a rectangular rod, external threads are respectively arranged on two sides, close to the first notch, of the adjusting rod, an adjusting rotary drum is sleeved outside the connecting section, internal threads matched with the external threads of the adjusting rod are formed in the inner wall of the adjusting rotary drum, the adjusting rod slides along the adjusting chute when the adjusting rotary drum is rotated, a connecting groove communicated with the adjusting chute is formed in the buffer column, second notches are formed in two opposite side walls of the buffer column, and the lower end of the adjusting rod extends into the connecting groove and.

6. The stage adapted for acoustic surface filter testing according to claim 5, wherein: the side wall circumference of adjusting the rotary drum sets up first scale, the upper end of adjusting the pole sets up the second scale along vertical direction, the observation window that is used for observing the second scale is seted up to the upper prop section.

7. The stage adapted for acoustic surface filter testing of claim 4, wherein: the lower extreme of cushion column is equipped with connecting portion, connecting portion and insulating block threaded connection.

8. The stage adapted for acoustic surface filter testing of claim 1, wherein: the insulating block is a rubber block.