CN205117880U - Servo actuator of punching for structural test - Google Patents
Servo actuator of punching for structural test Download PDFInfo
- Publication number
- CN205117880U CN205117880U CN201520877756.4U CN201520877756U CN205117880U CN 205117880 U CN205117880 U CN 205117880U CN 201520877756 U CN201520877756 U CN 201520877756U CN 205117880 U CN205117880 U CN 205117880U
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- servo actuator
- punching
- piston rod
- piston
- cylinder body
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Abstract
The utility model provides a servo actuator of punching for structural test, includes servo actuator cylinder body, slidable ground installation piston in the servo actuator cylinder body, the piston is connected with the piston rod, piston and piston rod all have the punching via hole that supplies the loading pull rod to pass, the preceding terminal surface and the load cell of piston rod are connected, the loading pull rod is sealed to be passed behind the punching via hole with load cell connects, the side -mounting displacement sensor of servo actuator cylinder body, displacement sensor with the piston rod linkage. The utility model provides a servo actuator of punching for structural test that appearance was destroyed suddenly, the security is higher, the suitability is good that is excused from an examination is tried hard to avoid to the effective control load when critical unstability.
Description
Technical field
The utility model relates to civil engineering structure load test systems technology field, especially a kind of structural test actuator.
Background technique
Existing civil engineering structure plate test loading system, especially civil engineering compression-shear test system, from open report, conventional loading method arranges that in test specimen upper-end surface one group or a few component join carrier bar, punching axial compression jack is placed at beam two ends, pull bar is fixed on counter-force ground or self-reaction framework through after jack by bottom-hinged, and the effect of punching axial compression jack is simulated gravity load; Substantially horizontal arranges servo actuator simulation shearing; Punching jack and servo actuator load test specimen by loading scheme.
The defect of prior art is: due to the employing of punching jack is that hand-hydraulic loads, the oil pressure of Non-follow control jack can only control the load that applies, because sample loading force and distortion when Instability are no longer linear or dull relevant, the distortion of Control Assay now cannot be carried out again by controlled loading power, easily cause test specimen to destroy suddenly, danger of toppling out of control even occurs.
Summary of the invention
In order to overcome the deficiency that uncontrollable loading force causes sample to destroy suddenly, Security is lower, applicability is poor when Instability of existing structure test actuator, the utility model provide a kind of when Instability effective controlled loading try hard to avoid the structural test punching servo actuator that sample of being excused from an examination destroys suddenly, Security is higher, applicability is good.
The utility model solves the technological scheme that its technical problem adopts:
A kind of structural test punching servo actuator, comprise servo actuator cylinder body, slidably piston is installed in described servo actuator cylinder body, described piston is connected with piston rod, described piston and piston rod are all with the punching via hole passed for loading pull bar, the front-end face of described piston rod is connected with load sensor, described loading tie-rod sealing is connected with described load sensor through after described punching via hole, installation position, the side displacement sensor of described servo actuator cylinder body, institute's displacement sensors and described piston rod link.
Further, institute's displacement sensors is fixed on guide mechanism, and described guide mechanism and described piston rod are synchronized with the movement.
Preferably, described guide mechanism comprises guide ring, guide holder and guide rod, described guide ring is fixedly connected with described piston rod, described guide ring one circle has pilot hole and displacement transducer mounting hole, two guide holders are installed in the side of described servo actuator cylinder body, described guide rod is fixed on also through a described guide holder in described pilot hole, and institute's displacement sensors is arranged in institute's displacement sensors mounting hole also through another guide holder.
Further again, the bottom of described servo actuator cylinder body, piston rod and load sensor end face install the coupling of the loading beam for being fixed on structural test respectively.
Further, the front-end face of described piston rod and the one side of land are fixed, and the another side of described land is fixedly connected with load sensor.
Described servo actuator cylinder body comprises rear end cover, makes moveable cylinder and front cover, described rear end cover is connected with the rear end of start cylinder, front cover is connected with the front end of start cylinder, and piston is sleeved in start cylinder slidably, and described loading pull bar passes described punching via hole by Sealed casing pipe.Certainly, rear end cover, making moveable cylinder also can in being wholely set.
Described piston and piston rod are in one.Certainly, piston and piston rod also can be arranged in split, as long as both be fixed together.
Technical conceive of the present utility model is: punching servo actuator is designed for and replaces original manual punching jack to provide axial loading force for test specimen, the oil cylinder piston design and fabrication technology identical with conventional servo actuator, ensure that punching servo actuator has extremely low frictional force and zero clearance is leaked, equally with the servo actuator of standard can complete closed loop control load test.
Actuator not only has all functions of punching jack, and on the basis of configuration load sensor, be configured with displacement transducer, in process of the test, computer controlled system can by the action of servo valve control punching servo actuator, the synchronous parallel that can not only realize multiple punching actuator loads, and can also, when detecting that exception appears in sample deformation and load, keep the output displacement of punching servo actuator loading head constant.Like this, not only can realize civil engineering structure compression-shear test to load, and can solve the common punching jack problem that uncontrollable loading force causes sample to destroy suddenly when Instability, make whole process of the test controlled, ensure tester personal safety.When combinationally using, the load test requirement of the complexity such as multi-axial forces is synchronous, ladder is synchronous can be met.
The beneficial effects of the utility model are mainly manifested in: when Instability, effective controlled loading tries hard to avoid that sample of being excused from an examination destroys suddenly, Security is higher, applicability is good.
Accompanying drawing explanation
Fig. 1 is the structural drawing of structural test punching servo actuator.
Fig. 2 is the side view of Fig. 1.
Fig. 3 is the plan view of Fig. 1.
Fig. 4 is the instance graph of post shock test.
Fig. 5 is the instance graph of frame structure shock test.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
With reference to Fig. 1 ~ Fig. 5, a kind of structural test punching servo actuator, comprise servo actuator cylinder body 1, in described servo actuator cylinder body 1, piston 2 is installed slidably, described piston 2 is connected with piston rod 3, described piston 2 and piston rod 3 are all with the punching via hole 4 passed for loading pull bar, the front-end face of described piston rod 3 is connected with load sensor 5, described loading tie-rod sealing is connected with described load sensor 5 through after described punching via hole 4, installation position, the side displacement sensor 6 of described servo actuator cylinder body 1, institute's displacement sensors 6 and described piston rod 3 link.
Further, institute's displacement sensors 6 is fixed on guide mechanism, and described guide mechanism and described piston rod 3 are synchronized with the movement.
Preferably, described guide mechanism comprises guide ring 7, guide holder 11 and guide rod 8, described guide ring 7 is fixedly connected with described piston rod 3, described guide ring 7 one circle has pilot hole and displacement transducer mounting hole, two guide holders 11 are installed in the side of described servo actuator cylinder body 1, described guide rod 8 is fixed on also through a described guide holder in described pilot hole, and institute's displacement sensors 6 is arranged in institute's displacement sensors mounting hole also through another guide holder 11.
Further again, the bottom of described servo actuator cylinder body 1, piston rod 3 and load sensor 5 end face install the coupling of the loading beam for fixed structure test respectively.
Further, the front-end face of described piston rod 3 and the one side of land 9 are fixed, and the another side of described land 9 is fixedly connected with load sensor 5.
Described servo actuator cylinder body 1 comprises rear end cover, makes moveable cylinder and front cover, described rear end cover is connected with the rear end of start cylinder, front cover is connected with the front end making moveable cylinder, and piston 2 is sleeved in start cylinder slidably, and described loading pull bar passes described punching via hole by Sealed casing pipe 10.Certainly, rear end cover, making moveable cylinder also can in being wholely set.
Described piston 2 and piston rod 3 are in one.
In the present embodiment, described punching servo actuator adopts the processing technology identical with general-purpose servo actuator, adopts inlet seal part and guide ring.Integral structure is adopted unlike punching servo actuator piston and piston rod and with punching via hole 4, piston rod 3 and load sensor 5 link together with generic servo actuator.
The structural test punching servo actuator of the present embodiment is applied in post shock test device, described post shock test device comprises counter-force ground 12, punching bar 17 and carry on the back tight bottom girder 15, carrying distribution beam 13, horizontal servo actuator 16 and punching servo actuator 18, described punching bar and carry on the back tight bottom girder and be fixedly mounted on counter-force ground, described punching bar and carry on the back on tight bottom girder and install test specimen 14 (post), carrying distribution beam 13 is installed in the upper end of described test specimen, punching servo actuator 18 is installed in the upper end of carrying distribution beam 13, punching bar 17 lower end is fixed with the tight bottom girder 15 of the back of the body, through described carrying distribution beam 13 and punching servo actuator 18, be connected with load sensor by nut, the side of described test specimen 14 and the telescopic end of horizontal servo actuator 16 hinged, the other end of described horizontal servo actuator 14 is hinged on counter force wall.
The structural test punching servo actuator of the present embodiment is applied in frame structure shock test device, described frame structure shock test device counter-force ground 12, punching bar 17 and carry on the back tight bottom girder 15, carrying distribution beam 13, horizontal servo actuator 16 and punching servo actuator 18, multiple described punching bar 17 and carry on the back tight bottom girder 15 and be fixedly mounted on counter-force ground, multiple described punching bar and carry on the back on tight bottom girder and install test specimen 14 (frame structure), the upper end carrying distribution beam 13 of each post of described frame structure, punching servo actuator 18 is installed in the upper end of carrying distribution beam, punching bar 17 lower end is fixed with the tight bottom girder 15 of the back of the body, through carrying distribution beam 13 and punching servo actuator, be connected with load sensor by nut, the side of each beam of described frame structure and the telescopic end of horizontal servo actuator 16 hinged, the other end of described horizontal servo actuator is hinged on counter force wall.
When actual tests, Electronic-hydraulic Servo Controller applies vertical load by punching servo actuator to sample by servo valve control Hydraulic servo system, can realize the electro-hydraulic servo closed loop control of vertical load and displacement and position and load retentive control, the step that can realize multiple stage punching servo actuator load synchronously loads or Asynchronous loading.In addition, sample unstability or overlooking destruction detected or arrive the controlled conditions set to be stop loading at controller, proceed to position retentive control, the sudden destroying preventing large-sized concrete structure sample and the danger therefore caused.
Claims (7)
1. a structural test punching servo actuator, it is characterized in that: comprise servo actuator cylinder body, slidably piston is installed in described servo actuator cylinder body, described piston is connected with piston rod, described piston and piston rod are all with the punching via hole passed for loading pull bar, the front-end face of described piston rod is connected with load sensor, described loading tie-rod sealing is connected with described load sensor through after described punching via hole, installation position, the side displacement sensor of described servo actuator cylinder body, institute's displacement sensors and described piston rod link.
2. structural test punching servo actuator as claimed in claim 1, it is characterized in that: institute's displacement sensors is fixed on guide mechanism, described guide mechanism and described piston rod are synchronized with the movement.
3. structural test punching servo actuator as claimed in claim 2, it is characterized in that: described guide mechanism comprises guide ring, guide holder and guide rod, described guide ring is fixedly connected with described piston rod, described guide ring one circle has pilot hole and displacement transducer mounting hole, two guide holders are installed in the side of described servo actuator cylinder body, described guide rod is fixed on also through a described guide holder in described pilot hole, and institute's displacement sensors is arranged in institute's displacement sensors mounting hole also through another guide holder.
4. the punching servo actuator of the structural test as described in one of claims 1 to 3, is characterized in that: the bottom of described servo actuator cylinder body, piston rod and load sensor end face install the coupling of the loading beam for being fixed on structural test respectively.
5. the punching servo actuator of the structural test as described in one of claims 1 to 3, is characterized in that: the front-end face of described piston rod and the one side of land are fixed, and the another side of described land is fixedly connected with load sensor.
6. the punching servo actuator of the structural test as described in one of claims 1 to 3, it is characterized in that: described servo actuator cylinder body comprises rear end cover, makes moveable cylinder and front cover, described rear end cover is connected with the rear end of start cylinder, front cover is connected with the front end of start cylinder, piston is sleeved in start cylinder slidably, and described loading pull bar passes described punching via hole by Sealed casing pipe.
7. the punching servo actuator of the structural test as described in one of claims 1 to 3, is characterized in that: described piston and piston rod are in one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520877756.4U CN205117880U (en) | 2015-11-05 | 2015-11-05 | Servo actuator of punching for structural test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520877756.4U CN205117880U (en) | 2015-11-05 | 2015-11-05 | Servo actuator of punching for structural test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205117880U true CN205117880U (en) | 2016-03-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520877756.4U Withdrawn - After Issue CN205117880U (en) | 2015-11-05 | 2015-11-05 | Servo actuator of punching for structural test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205117880U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105317778A (en) * | 2015-11-05 | 2016-02-10 | 杭州邦威机电控制工程有限公司 | Center-hole type servo actuator for structure test |
-
2015
- 2015-11-05 CN CN201520877756.4U patent/CN205117880U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105317778A (en) * | 2015-11-05 | 2016-02-10 | 杭州邦威机电控制工程有限公司 | Center-hole type servo actuator for structure test |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160330 Effective date of abandoning: 20170704 |