CN206546301U - Bellows testboard and bellows test system - Google Patents

Bellows testboard and bellows test system Download PDF

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Publication number
CN206546301U
CN206546301U CN201720240713.4U CN201720240713U CN206546301U CN 206546301 U CN206546301 U CN 206546301U CN 201720240713 U CN201720240713 U CN 201720240713U CN 206546301 U CN206546301 U CN 206546301U
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China
Prior art keywords
bellows
supporting plate
plate
testboard
portable plate
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CN201720240713.4U
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Chinese (zh)
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李铁骑
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Individual
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Abstract

The utility model is related to technical field of measurement and test, in particular to a kind of bellows testboard and bellows test system.A kind of bellows testboard, it includes the first supporting plate, the second supporting plate, portable plate and drive device.The plate face of the plate face of first supporting plate and the second supporting plate is oppositely arranged, and portable plate is arranged between the first supporting plate and the second supporting plate.First supporting plate and portable plate limit first test space, and the second supporting plate and portable plate limit second test space.Drive device and portable plate are connected to drive portable plate to move between the first supporting plate and the second supporting plate, to change the size of first test space and second test space.Such bellows testboard can test more than one piece bellows simultaneously, and using being simple and convenient to operate.A kind of bellows test system, it includes pressure gauge, counter, pressure-generating device, adjusting means and above-mentioned bellows testboard.Such test system is easy to use, simple to operate.

Description

Bellows testboard and bellows test system
Technical field
The utility model is related to technical field of measurement and test, is tested in particular to a kind of bellows testboard and bellows System.
Background technology
Bellows mainly includes metal bellows, expansion bellow, corrugated tube, diaphragm and diaphragm capsule and metal hose etc.. Metal bellows is mainly used in the effect such as compensation pipes thermal deformation, damping, absorption line sedimentation and deformation, is widely used in stone The industries such as change, instrument, space flight, chemical industry, electric power, cement, metallurgy.The other materials such as plastics bellows is worn in medium conveying, electric power The fields such as line, lathe, household electrical appliances play the role of irreplaceable.In engine, particularly aero-engine field, bellows is even more It is widely used as crucial connecting pipe.
The bellows class component applied in engineering, is operated in elastic-plastic range or alternate stress state sometimes, and the life-span only has Done on into hundred secondary.Element must give working life allowable, regulation cycle-index, time and frequency when circulating work.Elasticity The expected service life that the rated life time of element makes when being element design, it is desirable to which element does not allow appearance tired during the period The phenomenons such as labor, damage or failure.Therefore it is very crucial the service life of bellows effectively determine.Inventor passes through Cross and test many times, combined use situation finds that existing bellows test device at least has the disadvantages that:
1. inconvenient for use, inconvenient operation;
2. testing efficiency is low.
Utility model content
The purpose of this utility model is to provide a kind of bellows testboard, and it can conveniently and efficiently set multiple ripples Line pipe to be tested accordingly.
Another object of the present utility model is to provide a kind of bellows test system, including above-mentioned bellows test Platform, its is easy to use, can expeditiously complete the test of at least two bellowss.
What embodiment of the present utility model was realized in:
A kind of bellows testboard, it includes the first supporting plate, the second supporting plate, portable plate and drive device.First The plate face of the plate face of fagging and the second supporting plate is oppositely arranged, and portable plate is arranged between the first supporting plate and the second supporting plate. First supporting plate and portable plate limit first test space, and the second supporting plate and portable plate limit second test space.Driving dress Put and be connected to drive portable plate to move between the first supporting plate and the second supporting plate with portable plate, it is empty to change the first test Between and second test space size.
Such bellows testboard has the first supporting plate being oppositely arranged, the second supporting plate and is arranged on the first support Portable plate between plate and the second supporting plate, while the first supporting plate and portable plate limit first test space, the second supporting plate Second test space is limited with portable plate.First test space and second test space are to be used to place bellows to be tested Space, is also the main place tested bellows.Portable plate is connected with drive device, and drive device drives and is active in band Dynamic portable plate is moved between the first supporting plate and the second supporting plate, to change the big of first test space and second test space It is small, by such mode, compress or stretch bellows to be tested, it becomes possible to test the fatigue life of bellows.Can be with It is seen that such ripple testboard can at least test two bellowss, (first test space is at least provided with a ripple Pipe, second test space is at least provided with a bellows), testing efficiency can be greatly promoted relative to prior art, and can Ensure test work well, it is easy to operate.
It is above-mentioned also to include bottom plate in a kind of embodiment of the present utility model.First supporting plate and the second supporting plate are set On bottom plate, the first guide rod is provided between the plate face of the plate face of the first supporting plate and the second supporting plate.Offered on portable plate First through hole, the first guide rod is slidably disposed through first through hole.
In a kind of embodiment of the present utility model, be provided with above-mentioned first through hole with the first guide rod coordinate it is first straight Bobbin is held.
It is above-mentioned also to include the second guide rod in a kind of embodiment of the present utility model.Second is offered in first supporting plate Through hole, the second guide rod passes through the second through hole freely slidablely.Second guide rod one end connection portable plate, the second guide rod it is another End connection drive device.
In a kind of embodiment of the present utility model, be provided with above-mentioned second through hole with the second guide rod coordinate it is second straight Bobbin is held.
In a kind of embodiment of the present utility model, above-mentioned drive device is motor.
In a kind of embodiment of the present utility model, above-mentioned drive device is movably connected by bindiny mechanism with portable plate Connect.
In a kind of embodiment of the present utility model, above-mentioned bindiny mechanism include contiguous block and connecting rod, one end of connecting rod with The rotating shaft bias connection of motor, the other end and the contiguous block of connecting rod are rotatably coupled.Contiguous block one end and work away from connecting rod Dynamic plate connection.
A kind of bellows test system, it include pressure gauge, counter, pressure-generating device, adjusting means and it is above-mentioned in The bellows testboard of any one.Offered in second supporting plate and be further opened with and ventilate on the passage run through, portable plate The through hole that hole coordinates, pressure-generating device is connected by connecting line with passage.Adjusting means is set gradually with pressure gauge On connecting line, adjusting means is located between pressure gauge and pressure-generating device.Counter is arranged on testboard.
Such bellows test system includes above-mentioned bellows testboard, therefore with above-mentioned all advantages, enters One step, the through hole for being further opened with coordinating on the passage run through, portable plate with passage, pressure are offered in the second supporting plate Power generating means is connected by connecting line with passage.The mouth of pipe of bellows one end to be tested is hermetically arranged on Two supporting plates and just to the passage in the second supporting plate, the mouth of pipe of the bellows other end set hermetically on portable plate and Just to through hole (bellows is located at second test space);Meanwhile, the mouth of pipe of one end of another bellows is hermetically set On portable plate away from second test space one side and just to through hole, the mouth of pipe of the other end of the bellows is hermetically set In the first supporting plate.On the other hand, adjusting means is successively set on connecting line with pressure gauge, and adjusting means is located at pressure Between table and pressure-generating device.Just it is provided with the certain pressure of test requirements document in bellows so to be tested, and because Connected positioned at the bellows of first test space with the bellows-type positioned at second test space, so as to be tested two Pressure in individual bellows is all identical.After bellows testboard is started working, pass through the counting being arranged on testboard Device can just measure the number of times of bellows compression and/or stretching, and then obtain the fatigue life of bellows.
In a kind of embodiment of the present utility model, above-mentioned pressure-generating device is gas tank.
The beneficial effect of the utility model embodiment is:
Operationally, drive device drives portable plate at first to the bellows testboard that the utility model embodiment is provided Moved between fagging and the second supporting plate, to change the size of first test space and second test space.First test space Be to be used for the space placing bellows to be tested and test it with second test space, by such mode, compression or Stretching bellows to be tested, it becomes possible to test the fatigue life of bellows.Because first test space is at least provided with one Bellows, second test space can at least test two ripples at least provided with a bellows, such bellows testboard Pipe, substantially increases testing efficiency, and easy to use.
The bellows test system that the utility model embodiment the is provided air pressure that operationally pressure-generating device is produced leads to The passage crossed in the second supporting plate enters second test space that portable plate and the second supporting plate are limited without barrier, passes through work Through hole on dynamic plate, it is empty that the air pressure that pressure-generating device is produced also swimmingly can enter the second test from first test space Between, so ensure that first test space of setting is identical with the pressure in the bellows in second test space, for test Stable test environment is provided, adjusting means and pressure gauge then control the pressure size in bellows, by being arranged on testboard On counter can just measure the number of times of bellows compression and/or stretching, and then obtain the fatigue life of bellows.So Bellows test system, easy to use, testing efficiency is high.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme of the utility model embodiment, it will use below required in embodiment Accompanying drawing be briefly described, it will be appreciated that the following drawings illustrate only some embodiments of the present utility model, therefore should not be by Regard the restriction to scope as, for those of ordinary skill in the art, on the premise of not paying creative work, may be used also To obtain other related accompanying drawings according to these accompanying drawings.
Fig. 1 is the structural representation at a visual angle of bellows testboard in the utility model embodiment 1;
Fig. 2 is the structural representation of the first supporting plate in the utility model embodiment 1;
Fig. 3 is the structural representation of the second supporting plate in the utility model embodiment 1;
Fig. 4 is the structural representation at second visual angle of bellows testboard in the utility model embodiment 1;
Fig. 5 is the structural representation of portable plate in the utility model embodiment 1;
Fig. 6 is the structural representation at the 3rd visual angle of bellows testboard in the utility model embodiment 1;
Fig. 7 is the schematic diagram of bellows test system in the utility model embodiment 2.
Icon:100- bellows testboards;The supporting plates of 110- first;The through holes of 112- second;1122- second straight line bearings; The supporting plates of 120- second;122- passages;130- portable plates;131- first through hole;1311- first straight line bearings;132- runs through Hole;140- drive devices;The test spaces of 151- first;The test spaces of 152- second;160- bottom plates;161- risers;171- first Guide rod;The guide rods of 172- second;180- bindiny mechanisms;181- contiguous blocks;182- connecting rods;200- bellows test systems;210- is pressed Power table;220- counters;230- pressure-generating devices;240- adjusting meanss;250- connecting lines.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer Accompanying drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that retouched The embodiment stated is a part of embodiment of the utility model, rather than whole embodiments.Generally here described in accompanying drawing and The component of the utility model embodiment shown can be arranged and designed with a variety of configurations.
Therefore, the detailed description of embodiment of the present utility model below to providing in the accompanying drawings is not intended to limit requirement The scope of the present utility model of protection, but it is merely representative of selected embodiment of the present utility model.Based in the utility model Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, all Belong to the scope of the utility model protection.
It should be noted that:Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi It is defined in individual accompanying drawing, then it further need not be defined and explained in subsequent accompanying drawing.
, it is necessary to explanation, the orientation of the instruction such as term " " center ", " on ", " level " in description of the present utility model Or position relationship is that, based on orientation shown in the drawings or position relationship, or the utility model product is usually put when using Orientation or position relationship, are for only for ease of description the utility model and simplify description, rather than indicate or imply signified dress Put or element there must be specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to the utility model Limitation.In addition, term " first ", " second ", " the 3rd " etc. are only used for distinguishing description, and it is not intended that indicating or implying phase To importance.
In addition, the term such as term " level " is not offered as requiring part abswolute level or pendency, but it can be slightly tilted. It is not that the expression structure must be fully horizontal as " level " only refers to its direction with respect to more level for " vertical ", But can be slightly tilted.
In description of the present utility model, in addition it is also necessary to which explanation, unless otherwise clearly defined and limited, term " are set Put ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected;Can To be mechanical connection or electrical connection;Can be joined directly together, can also be indirectly connected to by intermediary, Ke Yishi The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this Concrete meaning in utility model.
Embodiment 1
Reference picture 1, Fig. 1 is the dimensional structure diagram of bellows testboard 100 in the present embodiment, can from Fig. 1 Go out, bellows testboard 100, including the first supporting plate 110, the second supporting plate 120, portable plate 130 and drive device 140.
From this figure it can be seen that the plate face of the plate face of the first supporting plate 110 and the second supporting plate 120 is oppositely arranged, it is living Dynamic plate 130 is arranged between the first supporting plate 110 and the second supporting plate 120.First supporting plate 110 and portable plate 130 limit the One test space 151, the second supporting plate 120 and portable plate 130 limit second test space 152.Drive device 140 and portable plate 130 are connected to drive portable plate 130 to move between the first supporting plate 110 and the second supporting plate 120, are surveyed for changing first Try the size of the test space 152 of space 151 and second.Further, in the present embodiment of utility model, portable plate 130 is flat It is arranged on capablely between the first supporting plate 110 and the first supporting plate 110, so that have when portable plate 130 is moved preferable The depth of parallelism.
With continued reference to Fig. 1, from this figure it can be seen that bellows testboard 100 includes bottom plate 160.First supporting plate 110 It is arranged on the second supporting plate 120 on bottom plate 160.Further, on bottom plate 160 also one end with vertical base plate 160 it is vertical Plate 161, the riser 161 is divided into the both sides at the edge of the length direction of bottom plate 160, and the riser 161 prolongs upwards from bottom plate 160 Stretch.In of the present utility model is implemented, riser 161 is integrally formed with bottom plate 160.
First supporting plate 110 is to be vertically disposed on bottom plate 160, and two of the short transverse of the first supporting plate 110 Side plate is connected with riser 161.In the present embodiment of the present utility model, the first supporting plate 110 and bottom plate 160 and riser 161 are equal It is fixedly connected, further, bottom plate 160, the supporting plate 110 of riser 161 and first are integrally formed, and such benefit is for portable plate 130 and second supporting plate 120 installation provide reference plane.
Reference picture 2, Fig. 2 is the structural representation of the first supporting plate 110.It can be seen that in the first supporting plate 110 Two the second through holes 112 along its width are offered, with reference to Fig. 1, it can be seen that be additionally provided with second in the second through hole 112 Linear bearing 1122.With reference to Fig. 1 it can also be seen that the second guide rod 172 is arranged in the inner ring of second straight line bearing 1122 with reality It is existing to pass through the second through hole 112 freely slidablely;Second guide rod 172 one end connection portable plate 130, the second guide rod 172 it is another One end connects drive device 140.
It can also be seen that also having four and the second through hole 112 on the diagonal of the plate face of the first supporting plate 110 from Fig. 2 Different through holes.One piece of installing plate (non-label is shown in figure) is provided with the plate face center of first supporting plate 110, installing plate Center offers the circular hole (being provided with plug on reference picture 1, the circular hole) run through.
Reference picture 3, Fig. 3 is the structural representation of the second supporting plate 120, as can be seen from Figure 3 second supporting plate 120 Also there are four through holes, this four through holes are corresponding with four through holes in the plate face of the first supporting plate 110 on diagonal in plate face; The center of the plate face short transverse of second supporting plate 120 is additionally provided with the through hole (main purpose of the through hole of two larger apertures Safety vent when being to be moved adjacent to the second supporting plate 120 as the end of the first guide rod 171).Can also from Fig. 3 Go out, the plate face of the second supporting plate 120 is provided centrally with the installing plate of rectangle, and the plate face center of the second supporting plate 120 is offered The passage 122 run through.The passage 122 is corresponding with the circular hole run through at the installing plate center of the first supporting plate 110.
Reference picture 4, Fig. 4 is the view at another visual angle of bellows testboard 100, can be to the 3rd supporting plate from figure Plate face center passage 122 on be provided with plug.
Reference picture 5, Fig. 5 is the structural scheme of mechanism of portable plate 130, it can be seen that being set in the plate face of portable plate 130 It is equipped with four first through hole 131, four first through hole 131 and is both provided with first straight line bearing 1311.Led with reference to Fig. 1, first Bar 171 is arranged on the inner ring of first straight line bearing 1311 to realize that the first guide rod 171 is slidably disposed through first through hole 131. It can also be seen that the center of the short transverse of portable plate 130 has two through holes from Fig. 5;The center of portable plate 130, which is offered, to be run through Hole 132.
Fig. 6 is the structural representation of the short transverse of bellows testboard 100.Explanation is needed exist for, because visual angle Relation, merely illustrate two the first guide rods 171 and second guide rod 172 in Fig. 6.
Reference picture 1 and Fig. 6, it can be seen that bellows testboard 100 has four the first guide rods 171, each first guide rod 171 lead to through the through hole in the first through hole 131 on portable plate 130, and one end of the first guide rod 171 and the first supporting plate 110 Cross bolt and be fixedly connected in the first supporting plate 110 and (can refer to shown in Fig. 6), the other end of the first guide rod 171 and the second support Through hole on plate 120 is bolted to connection (can refer to shown in Fig. 6) in the second supporting plate 120.Such first supporting plate 110 and second supporting plate 120 connected by the first guide rod 171, and portable plate 130 by the first guide rod 171 can be with free skating It is arranged on dynamicly between the first supporting plate 110 and the second supporting plate 120.
With continued reference to Fig. 1 and Fig. 6, bellows testboard 100 has two the second guide rods 172, and each first guide rod 171 is worn The second through hole 112 crossed in the first supporting plate 110, and one end of the second guide rod 172 passes through bolt with the through hole on portable plate 130 It is fixedly connected on portable plate 130, the other end of the second guide rod 172 is connected with drive device 140.So cause have along bottom plate The movement locus of 160 horizontal directions, so as to ensure that the precision of test.
With continued reference to Fig. 1, in the present embodiment, drive device 140 is motor.Drive device 140 passes through bindiny mechanism 180 It is movably connected with portable plate 130.Further, bindiny mechanism 180 includes contiguous block 181 and connecting rod 182, connecting rod 182 The rotating shaft bias connection of one end and motor, the other end and the contiguous block 181 of connecting rod 182 are rotatably coupled.Contiguous block 181 is remote One end of connecting rod 182 is connected with portable plate 130.
When the axis of rotation of motor, the pull bar being connected with machine shaft bias drags contiguous block 181 flat with bottom plate 160 Capable direction is moved back and forth, and then drives portable plate 130 to be moved back and forth between the first supporting plate 110 and the first supporting plate 110, And then change the size of first test space 151 and second test space 152.
Embodiment 2
Fig. 7 is refer to, the present embodiment provides a kind of bellows test system 200, and it includes pressure gauge 210, counter 220th, the bellows testboard 100 in pressure-generating device 230, adjusting means 240 and embodiment 1.Opened in second supporting plate 120 Provided with through passage 122, the through hole 132 coordinated with passage 122 is further opened with portable plate 130, pressure is filled 230 are put to connect with passage 122 by connecting line 250.Adjusting means 240 is successively set on connecting line with pressure gauge 210 On 250, adjusting means 240 is located between pressure gauge 210 and pressure-generating device 230.Counter 220 is arranged on testboard.
In the present embodiment of the present utility model, pressure-generating device 230 is gas tank.
When in use, the mouth of pipe of bellows one end to be tested is hermetically arranged on the second supporting plate 120 and just right Passage 122 in second supporting plate 120, the mouth of pipe of the bellows other end sets hermetically on portable plate 130 and just right Through hole 132 (bellows is located at second test space 152);Meanwhile, the mouth of pipe of one end of another bellows is hermetically set Put on portable plate 130 away from second test space 152 one side and just to through hole 132, the pipe of the other end of the bellows Mouth is hermetically arranged in the first supporting plate 110.On the other hand, adjusting means 240 is successively set on connecting tube with pressure gauge 210 On road 250, adjusting means 240 is located between pressure gauge 210 and pressure-generating device 230.In bellows so to be tested just The certain pressure of test requirements document is provided with, and it is because positioned at the bellows of first test space 151 and empty positioned at the second test Between 152 bellows-type connection so that the pressure in two bellowss to be tested is all identical.
Further, when the portable plate 130 in bellows testboard 100 is moved, change and be separately positioned on the first survey The volume of the bellows for trying space 151 and the bellows for being arranged on second test space 152, with the motion of portable plate 130, one In individual corrugated pipe pipeline pressure increase be equal to another corrugated pipe pipeline in pressure reduction, compared with prior art in ripple Pipe test system 200, such design greatly reduces the requirement of the air flue to passing through for pressed gas, facilitates manufacture and adds Work.
After bellows testboard 100 is started working, ripple can just be measured by the counter 220 being arranged on testboard The number of times that line pipe compresses and/or stretched, and then obtain the fatigue life of bellows.
Need exist for explanation be:
Circular hole in first supporting plate 110 is sealed in test process by plug, and plug is opened after the completion of test and then may be used With easily pressure release.
Preferred embodiment of the present utility model is these are only, the utility model is not limited to, for this area Technical staff for, the utility model can have various modifications and variations.It is all it is of the present utility model spirit and principle within, Any modification, equivalent substitution and improvements made etc., should be included within protection domain of the present utility model.

Claims (10)

1. a kind of bellows testboard, it is characterised in that:
Including the first supporting plate, the second supporting plate, portable plate and drive device;
The plate face of the plate face of first supporting plate and second supporting plate is oppositely arranged, and the portable plate is arranged on described Between one supporting plate and second supporting plate;First supporting plate and the portable plate limit first test space, described Second supporting plate and the portable plate limit second test space;The drive device is connected to drive institute with the portable plate State portable plate to move between first supporting plate and second supporting plate, to change first test space and described The size of second test space.
2. bellows testboard according to claim 1, it is characterised in that:
Also include bottom plate;
First supporting plate and second supporting plate are arranged on the bottom plate, the plate face of first supporting plate and described The first guide rod is provided between the plate face of second supporting plate;
First through hole is offered on the portable plate, first guide rod is slidably disposed through the first through hole.
3. bellows testboard according to claim 2, it is characterised in that:
The first straight line bearing coordinated with first guide rod is provided with the first through hole.
4. bellows testboard according to claim 1, it is characterised in that:
Also include the second guide rod;
The second through hole is offered in first supporting plate, second guide rod passes through second through hole freely slidablely;
One end of second guide rod connects the portable plate, and the other end of second guide rod connects the drive device.
5. bellows testboard according to claim 4, it is characterised in that:
The second straight line bearing coordinated with second guide rod is provided with second through hole.
6. bellows testboard according to claim 1, it is characterised in that:
The drive device is motor.
7. bellows testboard according to claim 6, it is characterised in that:
The drive device is movably connected by bindiny mechanism with the portable plate.
8. bellows testboard according to claim 7, it is characterised in that:
The bindiny mechanism includes contiguous block and connecting rod, and one end of the connecting rod is connected with the rotating shaft bias of the motor, described The other end of connecting rod is rotatably coupled with the contiguous block;The one end of the contiguous block away from the connecting rod and the portable plate Connection.
9. a kind of bellows test system, it is characterised in that:
Including the ripple described in any one in pressure gauge, counter, pressure-generating device, adjusting means and claim 1-8 Pipe testboard;
Offered in second supporting plate and be further opened with what is coordinated with the passage on the passage run through, the portable plate Through hole, the pressure-generating device is connected by connecting line with the passage;
The adjusting means is successively set on the connecting line with the pressure gauge, and the adjusting means is located at the pressure Between table and the pressure-generating device;
The counter is arranged on the testboard.
10. bellows test system according to claim 9, it is characterised in that:
The pressure-generating device is gas tank.
CN201720240713.4U 2017-03-13 2017-03-13 Bellows testboard and bellows test system Active CN206546301U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720240713.4U CN206546301U (en) 2017-03-13 2017-03-13 Bellows testboard and bellows test system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720240713.4U CN206546301U (en) 2017-03-13 2017-03-13 Bellows testboard and bellows test system

Publications (1)

Publication Number Publication Date
CN206546301U true CN206546301U (en) 2017-10-10

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Application Number Title Priority Date Filing Date
CN201720240713.4U Active CN206546301U (en) 2017-03-13 2017-03-13 Bellows testboard and bellows test system

Country Status (1)

Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114813381A (en) * 2022-06-29 2022-07-29 江苏泓源环保科技有限公司 Rubber expansion joint hydrostatic test blind plate force resisting device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114813381A (en) * 2022-06-29 2022-07-29 江苏泓源环保科技有限公司 Rubber expansion joint hydrostatic test blind plate force resisting device
CN114813381B (en) * 2022-06-29 2022-11-25 江苏泓源环保科技有限公司 Rubber expansion joint hydrostatic test blind plate force resisting device

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