CN212658406U - Horizontal vibration test tool capable of loading displacement - Google Patents
Horizontal vibration test tool capable of loading displacement Download PDFInfo
- Publication number
- CN212658406U CN212658406U CN202022125520.9U CN202022125520U CN212658406U CN 212658406 U CN212658406 U CN 212658406U CN 202022125520 U CN202022125520 U CN 202022125520U CN 212658406 U CN212658406 U CN 212658406U
- Authority
- CN
- China
- Prior art keywords
- tool
- vibration
- displacement
- medium filling
- air spring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
A horizontal vibration test tool capable of loading displacement comprises a bearing frame, an independent sliding table, an electromagnetic vibration table, a medium filling tool, a medium filling pipe interface, a medium drainage pipe interface, an elastic traction seat, a guide pin, a vibration tool, a moving coil switching tool, an air spring assembly, an elastic rope traction device and a displacement sensor. This experimental frock is used for the horizontal vibration test, also can be used to vertical vibration test through certain transformation. Except for effective transmission of vibration, the test tool can effectively decouple displacement loads in three directions, well realizes the static force and vibration coupling working condition of pipeline products, realizes accurate control, simultaneously loads through remote pneumatic control, is convenient and fast in the loading process, avoids safety risks, has certain universality, and is suitable for different vibration magnitude levels and displacement loads. Through changing bearing frame and vibration frock, can be applicable to the experimental demand of different size pipelines.
Description
Technical Field
The utility model relates to an experimental frock especially relates to a but level of loading displacement is to vibration test frock.
Background
For mechanical property examination of pipeline products, except for vibration stress, a certain displacement load (axial compression load generally) exists at the fixed end of the pipeline due to factors such as assembly, internal pressure and temperature, so that the pipeline has static assembly stress. For example, a fuel/oxidant conveying pipeline of a spacecraft not only applies vibration stress but also considers the loading of thrust displacement when simulating the actual vibration working condition. Therefore, when the vibration test of pipeline products is carried out, the specific test tool is required to be used, the loading requirement of displacement load is met while vibration excitation transmission is realized, and the mechanical property of the pipeline products is ensured to be checked in place.
Aiming at the simulation of the static force and vibration coupling working condition, when a displacement load is applied, the traction of an elastic rope or the loading of a screw rod is generally adopted at present, when the elastic rope is adopted, the direction deviation caused by actual assembly exists, the loading of the elastic rope in each direction is coupled, and the adjustment is complicated; when the lead screw is used for loading, manual application is needed when the upper fixed end of the pipeline is assembled, the process is complex, and meanwhile, when the pipeline is long, the risk of high-altitude operation can be increased. Therefore, a horizontal vibration test tool capable of loading displacement needs to be designed to solve the problems.
Disclosure of Invention
According to the technical problem, the utility model provides a but horizontal vibration test frock of loading displacement, including load frame, independent type slip table, electromagnetic type shaking table, medium filling frock, medium filling pipe interface, medium flowing back pipe interface, elastic traction seat, uide pin, vibration frock, movable coil switching frock, air spring subassembly, elastic rope draw gear, displacement sensor, the preceding, the back position below the load frame is equipped with independent type slip table, electromagnetic type shaking table respectively, the bottom of electromagnetic type load frame, independent type slip table, electromagnetic type shaking table is isomorphic bolt fixed mounting respectively on the ground;
the device comprises a medium filling tool, a vibration tool, a medium filling pipe, 4 elastic traction seats, two guide pin holes, guide pins and a control mechanism, wherein the upper flange and the lower flange are respectively arranged on the upper side and the lower side of the medium filling tool, the upper flange is hermetically connected with the lower end part of a tested pipeline, the lower flange is connected with the vibration tool, the bottom of the vibration tool is fixed on an independent sliding table through bolts, the vibration tool is provided with a kidney-shaped hole, the side surface of the medium filling tool is provided with a medium filling pipe interface and a medium drain pipe interface which are respectively used for connecting a medium filling pipe and a drain pipe, 4 elastic traction seats are uniformly distributed on the periphery of a bottom plate of the medium filling tool, two guide pin holes are formed in the;
the air spring assembly comprises a mounting seat, a vertical air spring and a horizontal air spring, the vertical air spring and the horizontal air spring are fixed on the mounting seat, the mounting seat is fixedly mounted on the independent sliding table, and the air spring assembly is connected to external pressure control equipment through an air pipe;
the electromagnetic type vibration table is provided with an electromagnetic type vibration table moving coil, one side of the vibration tool is fixed on the moving coil switching tool through a bolt, the moving coil switching tool is installed on the electromagnetic type vibration table moving coil through a bolt, and the end part of the other side of the vibration tool is connected with the horizontal air spring;
two sides of a bottom plate of the medium filling tool are respectively connected with a vertical air spring;
the elastic rope traction device comprises an elastic rope, a force sensor and a hoist, one end of the elastic rope is connected with an elastic traction seat on the medium filling tool through a lifting ring, the other end of the elastic rope is connected with the hoist, the hoist is installed on a force bearing frame, and the tension on the elastic rope is monitored through the force sensor;
and the displacement sensor is fixedly arranged on the mounting seat of the air spring assembly.
Furthermore, the bearing frame comprises a cross beam, two inclined stand columns and two stand columns, the stand columns are arranged symmetrically left and right, the tops of the two stand columns are fixedly connected with the cross beam, and one side of each stand column is provided with the inclined stand columns respectively.
Furthermore, the joints of the medium filling pipe and the medium drainage pipe and the joints of the medium filling pipe and the medium drainage pipe are sealed by spherical hard seals.
Furthermore, stand alone type slip table comprises slip table and guiding system, slip table mount pad, the slip table is installed on the slip table mount pad, guiding system is used for the direction of slip table, slip table mount pad bottom is equipped with the bolt that is used for height and levelness to adjust.
Furthermore, a waist-shaped hole is formed in the moving coil switching tool, and the waist-shaped hole in the moving coil switching tool is perpendicular to the waist-shaped hole in the vibration tool.
Further, the elastic rope traction devices are arranged in 2 groups in opposite directions.
Further, the number of the displacement sensors is 3.
Furthermore, the displacement sensor is an LVDT displacement sensor.
Further, still include the displacement adjustment board, the displacement adjustment board is split type circular flange structure, and it sets up between the lower flange of medium filling frock and vibration frock.
Furthermore, the moving coil switching tool is processed into an integrated structure by adopting an aluminum alloy material.
The utility model has the advantages that:
1) the utility model has reasonable structure, reliable vibration transmission and high anti-overturning moment, and realizes the coupling working condition of horizontal vibration and displacement load of pipeline products;
2) through the displacement loading mode of the utility model, the coupling degree of loading in each direction is smaller, the accurate loading of displacement is realized, and the operation is convenient;
3) meanwhile, the displacement is controlled pneumatically in a remote mode, the loading process is convenient and fast, and safety risks are avoided;
4) the tool has certain universality and can adapt to different vibration magnitude and displacement loads. Through changing bearing frame and vibration frock, can be applicable to the experimental demand of different size pipelines.
Drawings
Fig. 1 is a schematic diagram of an overall structure of an exemplary embodiment of the present invention;
fig. 2 is a schematic partial structure diagram of an exemplary embodiment of the present invention;
fig. 3 is a schematic structural view of an elastic rope traction apparatus according to an exemplary embodiment of the present invention.
As shown in the figure, 1 is a bearing frame, 101 is a cross beam, 102 is an inclined upright post, 103 is an upright post, 2 is an independent sliding table, 3 is an electromagnetic vibration table, 301 is an electromagnetic vibration table moving coil, 4 is a medium filling tool, 401 is a medium filling pipe interface, 402 is a medium drainage pipe interface, 403 is an elastic traction seat, 404 is a guide pin, 5 is a vibration tool, 6 is a displacement adjusting plate, 7 is a moving coil switching tool, 8 is an air spring assembly, 801 is an installation seat, 802 is a vertical air spring, 803 is a horizontal air spring, 9 is an elastic rope traction device, 901 is an elastic rope, 902 is a force sensor, and 903 is a hoist.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings: the utility model relates to a but horizontal vibration test frock of loading displacement, including load frame 1, independent slip table 2, electromagnetic type shaking table 3, medium filling frock 4, medium filling pipe interface 401, medium fluid-discharge tube interface 402, elastic traction seat 403, uide pin 404, vibration frock 55, movable coil switching frock 7, air spring subassembly 8, elastic rope draw gear 9, displacement sensor, load frame 1 is used for fixing the upper end of the pipeline under test, the preceding, back position below load frame 1 is equipped with independent slip table 2, electromagnetic type shaking table 3 respectively, the bottom of load frame 1, independent slip table 2, electromagnetic type shaking table 3 is the same bolt fixed mounting respectively on the ground;
the upper and lower sides of the medium filling tool 4 are respectively provided with an upper flange and a lower flange, the upper flange is hermetically connected with the lower end part of the tested pipeline, the lower flange is connected with the vibration tool 55, the bottom of the vibration tool 55 is fixed on the independent slipway 2 through bolts to improve the anti-overturning moment of the vibration system, a waist-shaped hole is formed in the vibration tool 55, a medium filling pipe interface 401 and a medium drain pipe interface 402 are arranged on the side surface of the medium filling tool 4 and are respectively used for connecting a medium filling pipe and a medium drain pipe, 4 elastic traction seats 403 are uniformly distributed on the periphery of the bottom plate of the medium filling tool 4, two guide pin holes are formed in the bottom plate of the medium filling tool 4 in a 180-degree manner, guide pins 404 are respectively installed in the guide pin holes and provide mechanical limit for the horizontal position of the lower end part of the tested pipeline when a medium is filled or pressurized;
the air spring assembly 8 comprises an installation seat 801, a vertical air spring 802 and a horizontal air spring 803, the vertical air spring 802 and the horizontal air spring 803 are fixed on the installation seat 801, the installation seat 801 is fixedly installed on the independent sliding table 2, the air spring assembly 8 is connected to external pressure control equipment through an air pipe, and remote deformation control of the air spring can be achieved;
the electromagnetic type vibration table 3 is provided with an electromagnetic type vibration table moving coil 301, one side of the vibration tool 55 is fixed on the moving coil switching tool 7 through a bolt, the moving coil switching tool 7 is installed on the moving coil of the electromagnetic type vibration table 3 through a bolt, and the other side end of the vibration tool 55 is connected with a horizontal air spring 803 and is used for horizontal displacement loading;
two sides of the bottom plate of the medium filling tool 4 are respectively connected with a vertical air spring 802 and used for vertical displacement loading;
the elastic rope traction device 9 comprises an elastic rope 901, a force sensor 902 and a hoist 903, one end of the elastic rope 901 is connected with an elastic traction seat 403 on the medium filling tool 4 through a hanging ring to ensure that the horizontal position of the lower end of the tested pipeline is kept unchanged, the other end of the elastic rope 901 is connected with the hoist 903, the hoist 903 is installed on the bearing frame 1, and the tension on the elastic rope 901 is monitored through the force sensor 902;
the displacement sensor is fixedly mounted on the mounting seat 801 of the air spring assembly 8.
Furthermore, the force bearing frame 1 is composed of cross beams 101, oblique upright posts 103102 and upright posts 103, the two upright posts 103 are arranged symmetrically left and right, the tops of the two upright posts 103 are fixedly connected with the cross beams 101, and one side of each upright post 103 is provided with an oblique upright post 103102.
Further, the pipe joint at the joint of the medium filling pipe joint and the medium drain pipe joint 402 and the medium filling pipe and the medium drain pipe adopts spherical hard seal.
Furthermore, stand alone type slip table 2 comprises slip table and guiding system, slip table mount pad, the slip table is installed on the slip table mount pad, the guiding system is used for the direction of slip table, slip table mount pad bottom is equipped with the bolt that is used for height and levelness to adjust.
Furthermore, a kidney-shaped hole is formed in the moving coil switching tool 7, and the kidney-shaped hole in the moving coil switching tool is perpendicular to the kidney-shaped hole in the vibration tool 55, so that the positioning deviation during assembly can be compensated.
Further, the elastic rope traction devices 9 are arranged in 2 groups with opposite directions, and the direction of the elastic rope 901 is perpendicular to the vibration direction.
Furthermore, the number of the displacement sensors is 3, the displacement sensors are fixed on the mounting seat 801 of the air spring assembly 8, and the measuring points are located at the proper positions of the medium filling tool 4 and used for monitoring the displacement loads of the lower end part of the tested pipeline in three directions in real time.
Furthermore, the displacement sensor is an LVDT displacement sensor.
Further, still include displacement adjustment plate 6, displacement adjustment plate 6 chooses for use the better light material of rigidity whole machine-shaping, and it is split type circular flange structure, and it sets up between the lower flange of medium filling frock 4 and vibration frock 55, the thickness of displacement adjustment plate 6 is vertical loading displacement value, ensures the accurate control of vertical displacement.
Furthermore, the moving coil switching tool is processed into an integrated structure by adopting an aluminum alloy material.
The working principle is as follows:
1) after the electromagnetic type vibration table 3 is adjusted to the horizontal direction, the independent sliding table 2 is installed in front of the movable coil 301 of the electromagnetic type vibration table according to the designed position, and the positioning deviation of the two is guaranteed to be within 5 mm;
2) mounting a vibration tool 5 on the independent sliding table 2, mounting a moving coil switching tool 7 on the electromagnetic type vibrating table moving coil 301, and finally butting the vibration tool 5 and the moving coil switching tool 7 by adjusting a table body air bag of the electromagnetic type vibrating table 3;
3) the bearing frame 1 is assembled by a cross beam 101, an inclined upright post 102 and an upright post 103, and the bottom of the bearing frame is fixed on a foundation around the electromagnetic type vibration table 3 by bolts and pressing strips;
4) fixing the mounting seat 801 to the independent sliding table 2, mounting a rigid substitute of the vertical air spring 802 on the mounting seat 801, and mounting the horizontal air spring 803 between the vibration tool 5 and the mounting seat 801;
5) connecting the lower end part of the tested pipeline with a medium filling tool 4, integrally hoisting, installing the upper end part of the tested pipeline on the cross beam 101 through a corresponding tool, adjusting the position of the device, and fixing the medium filling tool 4 on a vibration tool 5 through a bolt;
6) corresponding pipelines are connected to a medium source and a waste liquid collecting container on a filling pipe interface 401 and a liquid discharge pipe interface 402 of the medium filling tool 4;
7) the test tube is subjected to airtightness inspection through a pressurizing device, the airtightness inspection is kept for a specified time in a step-by-step loading mode, whether pressure drop exists or not is observed, and when the pressure drop condition is found through the airtightness inspection, leakage point inspection is carried out;
8) installing a vertical air spring 802 to replace a rigid substitute thereof;
9) installing an LVDT displacement sensor and confirming that a signal acquisition system is normal;
10) installing an elastic rope traction device 9;
11) removing the connecting bolts of the medium filling tool 4 and the vibration tool 5;
12) filling a medium into the pipeline, and after filling, carrying out displacement loading through the vertical air spring 802 in a step-by-step loading manner until the loading displacement meets the test requirement;
13) pressurizing the tested pipeline by a pressurizing device in a step-by-step loading manner until the pressure is loaded to a required pressure value, and adjusting an air spring 803 and an elastic rope traction device 9 by the level when the medium filling tool 4 has large deviation (more than 1mm) in the horizontal direction so as to restore the medium filling tool 4 to the original position;
14) installing the displacement adjusting plate 6 between the medium filling tool 4 and the vibration tool 5, adjusting the pressure of the vertical air spring 802 to fit the installation surface, and fastening the displacement adjusting plate 6, the medium filling tool 4 and the vibration tool 5;
15) starting a vibration test system, and starting a vibration test according to a set vibration test section;
16) and when the test is finished, the pressure is released through the pressurizing device, the pressure of the vertical air spring 802 is simultaneously unloaded, waste liquid is discharged through a liquid discharge pipe interface of the medium filling tool 4, after connecting bolts of the medium filling tool 4 and the vibration tool 5 are removed, the pressure of the vertical air spring 802 is adjusted, the medium filling tool 4 and the vibration tool 5 are detached and separated, and the displacement adjusting plate 6 is taken out.
To sum up, the utility model discloses rational in infrastructure, the vibration transmission is reliable, and antidumping moment is high, has realized the level of pipeline class product to the coupling operating mode of vibration and displacement load. Through a special displacement loading mode, the coupling degree of loading in all directions is small, and accurate loading of displacement is achieved. Meanwhile, the displacement is controlled by remote pneumatic control, the loading process is convenient and fast, and the safety risk is avoided. The tool has certain universality and can adapt to different vibration magnitude and displacement loads. Through changing bearing frame and vibration frock, can be applicable to the experimental demand of different size pipelines.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications can be made without departing from the principle of the present invention, and these modifications should also be regarded as the protection scope of the present invention.
Claims (10)
1. A horizontal vibration test tool capable of loading displacement is characterized by comprising a bearing frame, an independent sliding table, an electromagnetic type vibration table, a medium filling tool, a medium filling pipe connector, a medium drainage pipe connector, an elastic traction seat, a guide pin, a vibration tool, a moving coil switching tool, an air spring assembly, an elastic rope traction device and a displacement sensor, wherein the independent sliding table and the electromagnetic type vibration table are respectively arranged at the front position and the rear position below the bearing frame, and the bottoms of the bearing frame, the independent sliding table and the electromagnetic type vibration table are respectively fixedly arranged on a foundation by isomorphic bolts;
the device comprises a medium filling tool, a vibration tool, a medium filling pipe, 4 elastic traction seats, two guide pin holes, guide pins and a control mechanism, wherein the upper flange and the lower flange are respectively arranged on the upper side and the lower side of the medium filling tool, the upper flange is hermetically connected with the lower end part of a tested pipeline, the lower flange is connected with the vibration tool, the bottom of the vibration tool is fixed on an independent sliding table through bolts, the vibration tool is provided with a kidney-shaped hole, the side surface of the medium filling tool is provided with a medium filling pipe interface and a medium drain pipe interface which are respectively used for connecting a medium filling pipe and a drain pipe, 4 elastic traction seats are uniformly distributed on the periphery of a bottom plate of the medium filling tool, two guide pin holes are formed in the;
the air spring assembly comprises a mounting seat, a vertical air spring and a horizontal air spring, the vertical air spring and the horizontal air spring are fixed on the mounting seat, the mounting seat is fixedly mounted on the independent sliding table, and the air spring assembly is connected to external pressure control equipment through an air pipe;
the electromagnetic type vibration table is provided with an electromagnetic type vibration table moving coil, one side of the vibration tool is fixed on the moving coil switching tool through a bolt, the moving coil switching tool is installed on the electromagnetic type vibration table moving coil through a bolt, and the end part of the other side of the vibration tool is connected with the horizontal air spring;
two sides of a bottom plate of the medium filling tool are respectively connected with a vertical air spring;
the elastic rope traction device comprises an elastic rope, a force sensor and a hoist, one end of the elastic rope is connected with an elastic traction seat on the medium filling tool through a lifting ring, the other end of the elastic rope is connected with the hoist, the hoist is installed on a force bearing frame, and the tension on the elastic rope is monitored through the force sensor;
and the displacement sensor is fixedly arranged on the mounting seat of the air spring assembly.
2. The horizontal vibration test tool capable of loading displacement according to claim 1, wherein the force bearing frame comprises two cross beams, two inclined upright columns and two upright columns, the two upright columns are arranged in bilateral symmetry, the tops of the two upright columns are fixedly connected with the cross beams, and one side of each upright column is provided with the inclined upright column.
3. The tool for the horizontal vibration test capable of being loaded and displaced according to claim 1, wherein the joints of the medium filling pipe joint and the medium drainage pipe joint and the medium filling pipe and the medium drainage pipe are hard-sealed by spherical surfaces.
4. The tool for the horizontal vibration test capable of being loaded with displacement according to claim 1, wherein the independent sliding table is composed of a sliding table, a guide system and a sliding table mounting seat, the sliding table is mounted on the sliding table mounting seat, the guide system is used for guiding the sliding table, and bolts for adjusting the height and the levelness are arranged at the bottom of the sliding table mounting seat.
5. The tool for horizontal vibration test with loading displacement of claim 1, wherein the moving coil switching tool is provided with a kidney-shaped hole, and the kidney-shaped hole is perpendicular to the kidney-shaped hole in the vibration tool.
6. A loadably displaceable horizontal vibration testing tool according to claim 1, wherein said elastic cord traction means are provided in 2 sets in opposite directions.
7. The tool for horizontal vibration test with loadable displacement according to claim 1, wherein the number of the displacement sensors is 3.
8. The tool of claim 7, wherein the displacement sensor is an LVDT displacement sensor.
9. The horizontal vibration test tool capable of being loaded with displacement according to claim 1, further comprising a displacement adjusting plate, wherein the displacement adjusting plate is of a split type circular flange structure and is arranged between a lower flange of the medium filling tool and the vibration tool.
10. The horizontal vibration test tool capable of being loaded and displaced according to claim 1, wherein the moving coil switching tool is processed into an integrated structure by adopting an aluminum alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022125520.9U CN212658406U (en) | 2020-09-24 | 2020-09-24 | Horizontal vibration test tool capable of loading displacement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022125520.9U CN212658406U (en) | 2020-09-24 | 2020-09-24 | Horizontal vibration test tool capable of loading displacement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212658406U true CN212658406U (en) | 2021-03-05 |
Family
ID=74761919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022125520.9U Active CN212658406U (en) | 2020-09-24 | 2020-09-24 | Horizontal vibration test tool capable of loading displacement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212658406U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111982443A (en) * | 2020-09-24 | 2020-11-24 | 天津航天瑞莱科技有限公司 | Horizontal vibration test tool capable of loading displacement |
| CN114001893A (en) * | 2021-10-29 | 2022-02-01 | 南京航空航天大学 | Coupling test device and method containing unidirectional constant load and vibration load |
-
2020
- 2020-09-24 CN CN202022125520.9U patent/CN212658406U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111982443A (en) * | 2020-09-24 | 2020-11-24 | 天津航天瑞莱科技有限公司 | Horizontal vibration test tool capable of loading displacement |
| CN111982443B (en) * | 2020-09-24 | 2024-06-07 | 天津航天瑞莱科技有限公司 | Horizontal vibration test tool capable of loading displacement |
| CN114001893A (en) * | 2021-10-29 | 2022-02-01 | 南京航空航天大学 | Coupling test device and method containing unidirectional constant load and vibration load |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109141905B (en) | Six-component force test bed and method for measuring vector thrust thereof | |
| CN212658406U (en) | Horizontal vibration test tool capable of loading displacement | |
| EP2613134B1 (en) | System and method for aligning a test article with a load | |
| CN109115510B (en) | Six-component force test bed and error determination method thereof | |
| CN104568575B (en) | Force-applying push rod device and multi-axial load loading machine | |
| CN106240841A (en) | A kind of gear test charger | |
| JP2011002435A (en) | Wind-tunnel balance calibrator | |
| KR20100108991A (en) | Test equipment and method of air vehicle landing gear | |
| CN206339329U (en) | Volume range force sensor calibrating installation | |
| CN108120549A (en) | Volume range force sensor calibrating installation | |
| CN104236836A (en) | Pressure balancing system and method for rocket conveying pipeline system vibration test | |
| CN212123355U (en) | Loading device for rigidity measurement of joint and whole machine of operation type industrial robot | |
| CN107757947A (en) | A kind of adjustable hydraulic pressure of rigidity does device debugging stand and adjustment method | |
| CN103267617A (en) | Device for testing abutting and sealing performance of shield machine | |
| CN111982443A (en) | Horizontal vibration test tool capable of loading displacement | |
| CN212674401U (en) | Liquid nitrogen bifurcation pipeline double-platform shunt excitation vibration test system | |
| CN204613032U (en) | A kind of test unit measuring the distortion of reactor fuel assemblies base | |
| CN109115512B (en) | Test bed for realizing six-component force model construction method and method for measuring vector thrust | |
| CN104458311A (en) | Structural column blast-resistant test device | |
| CN106248384A (en) | A kind of power for liquid propellant rocket engine test transmits Change-over frame and method for designing | |
| CN111982440B (en) | Liquid nitrogen bifurcation pipeline double-platform parallel excitation vibration test system | |
| CN112161925B (en) | Structural adhesive performance detection device for existing hidden frame glass curtain wall | |
| US6722215B2 (en) | Manipulator apparatus with low-cost compliance | |
| CN210037206U (en) | Elastic-like foundation beam type internal force self-balancing jack static load test bed | |
| CN218725271U (en) | Actuating mechanism thrust check and valve rod strain test bench |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |