CN106248484B - Combined load test device - Google Patents
Combined load test device Download PDFInfo
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- CN106248484B CN106248484B CN201610608521.4A CN201610608521A CN106248484B CN 106248484 B CN106248484 B CN 106248484B CN 201610608521 A CN201610608521 A CN 201610608521A CN 106248484 B CN106248484 B CN 106248484B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/20—Investigating strength properties of solid materials by application of mechanical stress by applying steady bending forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0023—Bending
Abstract
The invention discloses a combined load test device, which belongs to the technical field of steel pipe tests and solves the problems of high cost and low accuracy of combined loading tests of bending moment and axial load. The invention improves the accuracy and the safety of the steel pipe test.
Description
Technical Field
The invention relates to a combined load test device which is used for realizing combined loading of bending moment and axial load.
Background
Due to the fact that structural damage is caused by design, manufacturing and using environments of a steel structure, corresponding test research and detection need to be carried out on important nodes and steel pipe materials, and the steel pipe structure is subjected to the action of bending moment and axial load in practical application, so that how to accurately realize combined loading of the bending moment and the axial load is important guarantee for guaranteeing that a test achieves expectation.
The scientific research and detection unit does not specially purchase equipment for realizing combined load, the existing servo universal testing machine is mainly utilized, the combined loading of bending moment and axial load is realized in an eccentric test mode, however, once the eccentric distance is too large, the local damage of a test piece can be caused, the test accuracy is influenced, meanwhile, the eccentric test generally adopts surface loading instead of linear loading, the required eccentric load cannot be accurately implemented due to the fact that the cross section size of a steel pipe member is large, the force on a loading surface is unevenly distributed due to the surface loading, and the calculation of the eccentric distance is not accurate.
Simulation combination load still adopts the cooperation of the long arm of force rigidity crossbeam two actuators to realize, but the rigidity crossbeam expense of many actuators and the preparation long arm of force can greatly increased test device's cost, it is also very difficult to control the synchronous loading of many actuators, experimental maneuverability is not strong promptly, and simultaneously, the deformation of test piece can arouse the actuator to apply the skew of loading point position in the process of the test, the bearing surface of actuator can slide on the rigidity crossbeam promptly, its experimental danger coefficient is higher.
Therefore, it is necessary to develop a testing device for implementing combined loading accurately and economically, so as to be popularized and applied in actual engineering or testing.
Disclosure of Invention
The invention aims to provide a combined load test device which is simple, improves the accuracy of combined loading simulation of bending moment and axial load and has lower test cost.
In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a combination load test device, is equipped with the space of placing the test piece including the testing machine that has two loading seats between two loading seats, still includes two and connects respectively in the combination load generating device of test piece both ends and face-to-face setting, combination load generating device is equipped with the first cylinder that bears loading seat pressure effect and bears the second cylinder that loading seat pulling force was used, and first cylinder and second cylinder all with combination load generating device line contact.
Further, combination load generating device includes installation department and fixed part, and the fixed part is connected with the test piece, and the installation department includes towards the first active surface of loading the seat and the second active surface that deviates from the loading seat, and first cylindrical week side supports on first active surface, and the second cylindrical week side supports on the second active surface.
Furthermore, a line load conversion device is arranged on the loading seat and connected to the second cylinder.
Further, line load conversion equipment includes the bottom plate of being connected with the loading seat, and the bottom plate passes through the bolt fastening on the loading seat, and is equipped with the connecting plate that extends to the installation department direction on the bottom plate, and the tip that the connecting plate stretches out the installation department is equipped with the through-hole, and the second cylinder inserts the through-hole.
Further, be equipped with the first line load stop device of injecing first cylinder and test piece relative position on the installation department, still be equipped with the second line load stop device of injecing second cylinder and test piece relative position on the installation department, first line load stop device and second line load stop device all can dismantle with the installation department and be connected.
Further, first line load stop device includes first mounting panel, first mounting panel passes through the bolt fastening on the first working face, one side that first mounting panel deviates from the installation department is equipped with the first limiting plate of two relative settings, two first limiting plates press from both sides tight first cylinder, second line load stop device includes the second mounting panel, the second mounting panel passes through the bolt fastening on the second working face, one side that the second mounting panel deviates from the installation department is equipped with the second limiting plate of two relative settings, two second limiting plates press from both sides tight second cylinder.
Furthermore, the fixing part comprises a short beam, a short connecting pipe which is coaxial with the test piece is arranged on the short beam, the end part of the test piece extends into the short connecting pipe, and a reinforcing plate connected with the short beam is arranged on the outer side of the short connecting pipe.
Furthermore, the installation part comprises a long beam parallel to the short beam, a transmission beam connected with the short beam is arranged on the long beam, and the transmission beam is perpendicular to the long beam and the short beam.
Further, be equipped with the anchor clamps of centre gripping test piece on the fixed part, anchor clamps include connecting seat and arc jack catch, are equipped with bevel pinion and big bevel gear in the connecting seat, bevel pinion drive big bevel gear, and big bevel gear's the back is equipped with the helicla flute of being connected with the arc jack catch, is equipped with the spanner on the week side of connecting seat and adjusts the hole, and the spanner inserts the centre bore cooperation rotation bevel pinion of spanner regulation hole and bevel pinion.
Further, still include the protective sheath of suit in the test piece outside, the protective sheath is the ring, and the ring both sides are equipped with the elastic component of hugging closely the test piece week side.
After the technical scheme is adopted, the invention has the following advantages:
1. firstly, the loading seat applies the action of axial load and bending moment to a test piece through the combined load generating device, the existing testing machine can be modified under the condition that large-scale loading equipment is not required to be purchased again, the requirements of a combined load test can be met by adding the combined load generating device, the cylinder and the fixing device, and the test cost is greatly saved; secondly, when the simulated combined load is eccentrically loaded, the loading seat and the cylinder are not directly contacted with the test piece, so that the end part of the test piece is prevented from being damaged due to overlarge local stress, and the accurate implementation of a simulation test is facilitated; finally, in the simulated combined load eccentric loading method, the first cylinder is in line contact with the combined load generating device to realize a bending test, the second cylinder is in line contact with the combined load generating device to realize a bending test, and the line contact of the combined load generating device and the cylinders enables acting force to be concentrated on the contact line of the combined load generating device, so that the acting force is distributed more uniformly, the eccentric distance measurement is facilitated, the eccentric load implementation accuracy is improved, meanwhile, the combined load generating device facilitates the fixation of the cylinders, and the stability and the safety of the cylinders acting on the combined load generating device are higher.
2. First cylinder and first active surface contact, second cylinder and second active surface contact, no matter the loading seat is the bending test or the bending test, the cylinder all with installation department line contact, guarantee experimental eccentric loading test's accuracy.
3. The loading seat is provided with a linear load conversion device, and the second cylinder can be pressed on the second action surface when the test piece is under the tensile force of the loading seat, so that the surface contact of the loading seat is converted into the linear contact.
4. First line load stop device and second line load stop device's setting not only does benefit to the measurement of eccentricity, avoids cylindrical slip among the loading process moreover, has improved stability and security of cylinder under the effect of loading seat.
5. The fixing piece is provided with a clamp, and when a bending test is carried out, the fixing part enables two ends of the test piece to be connected to the fixing part through the clamp, so that the test piece is prevented from being separated from the fixing part in the bending process; the test piece outside sets up the protective sheath, prevents that the test piece from popping out and injuring the operator in the sudden fracture of bending or stretch bending test, improves the security of whole combination load test device.
Drawings
The invention will be further described with reference to the accompanying drawings in which:
FIG. 1 is a partial front view of a combination load testing apparatus according to one embodiment;
FIG. 2 is a front view of the combined load generating device according to the first embodiment;
FIG. 3 is a side view of a combination load generating device according to one embodiment;
FIG. 4 is a bottom view of the combined load generating device according to the first embodiment;
FIG. 5 is a front view of a neutral load transfer arrangement according to an embodiment;
FIG. 6 is a side view of a neutral load transfer device according to an embodiment;
FIG. 7 is a front view of the first line load limiting device according to one embodiment;
FIG. 8 is a front view of a clamp according to the first embodiment;
FIG. 9 is a front view of a protective sheath according to one embodiment.
In the figure: 1-test piece, 2-combined load generating device, 21-short beam, 22-long beam, 23-junction pipe, 24-reinforcing plate, 25-transmission beam, 26-first surface, 27-second surface, 3-first cylinder, 4-second cylinder, 5-line load conversion device, 51-bottom plate, 52-connecting plate, 53-through hole, 6-first line load limiting device, 61-first mounting plate, 62-first limiting plate, 63-first limiting groove, 7-second line load limiting device, 8-protective sleeve, 81-elastic piece, 9-clamp, 91-connecting seat and 92-arc-shaped clamping jaw.
Detailed Description
The first embodiment is as follows:
the embodiment provides a combined load test device, as shown in fig. 1, the combined load test device includes a testing machine having two loading seats, the two loading seats are an upper loading seat and a lower loading seat which are distributed along a height direction, wherein the upper loading seat can move up and down to realize loading of pressure and tension, the lower loading seat is fixed, a space for placing a test piece 1 is arranged between the upper loading seat and the lower loading seat, the combined load test device further includes two combined load generating devices 2 which are respectively connected to two ends of the test piece 1 and are arranged face to face, the combined load generating device 2 is provided with a first cylinder 3 bearing the pressure of the loading seat and a second cylinder 4 bearing the tension of the loading seat, the first cylinder 3 and the second cylinder 4 are in line contact with the combined load generating device 2, the axes of the first cylinders 3 on the two combined load generating devices 2 are parallel and perpendicular to the axis of the test piece 1, the plane where the axes of the first cylinders 3 on the two combined load generating devices 2 are located is parallel to the axis of the test piece 1, the axes of the second cylinders 4 on the two combined load generating devices 2 are parallel and perpendicular to the axes of the cylinder 1, and the axes of the two combined load generating devices are parallel to measure the distance between the axes of the test piece 2.
The loading seat applies the axial load and bending moment to the test piece 1 through the combined load generating device 2, the existing testing machine can be modified under the condition of not purchasing large-scale loading equipment again, the requirements of a combined load test can be met by adding the combined load generating device 2, the cylinder and the fixing device, and the test cost is greatly saved; secondly, when the simulated combined load is eccentrically loaded, the loading seat and the cylinder are not directly contacted with the test piece 1, so that the end part of the test piece 1 is prevented from being damaged due to overlarge local stress, and the accurate implementation of a simulation test is facilitated; finally, during the eccentric loading of the simulated combined load, the first cylinder 3 and the second cylinder 4 are in line contact with the combined load generating device 2, the line contact of the cylinders enables the acting force to be concentrated on the contact line of the combined load generating device 2, the acting force is distributed more uniformly, the eccentric distance measurement is facilitated, the accuracy of the implementation of the eccentric load is improved, meanwhile, the combined load generating device 2 is convenient for the fixation of the cylinders, and the stability and the safety of the cylinders acting on the combined load generating device 2 are higher.
With reference to fig. 2 to 4, the combined load generating device 2 includes an installation portion and a fixing portion, the fixing portion includes a short beam 21 perpendicular to the axis of the test piece 1, the length and width of the short beam 21 are equal, a connection short tube 23 coaxially disposed with the test piece 1 is disposed on one side of the short beam 21 facing the test piece 1, the end of the test piece 1 extends into the connection short tube 23 and abuts against the short beam 21, the connection short tube 23 limits the test piece 1 to move on a plane perpendicular to the axis of the test piece 1, and it is ensured that the test piece 1 is stably pressed or pulled under the detection condition. The reinforcing plate 24 connected with the short beam 21 is arranged on the outer side of the short connecting pipe 23, and the reinforcing plate 24 is uniformly distributed along the peripheral side of the short connecting pipe 23, so that the strength of the short connecting pipe 23 is improved, and the short connecting pipe 23 is prevented from being deformed or even broken due to extrusion of the test piece 1.
The installation department includes a long crossbeam 22 parallel with short beam 21, long crossbeam 22's the length of being greater than short beam 21 and the width that the width is less than short beam 21, make things convenient for the eccentric settings of the relative test piece 1 of first cylinder 3 and second cylinder 4, long crossbeam 22's one end and short beam 21's one end parallel and level, and be equipped with transmission beam 25 with the tip of short beam 21 parallel and level on the long crossbeam 22, transmission beam 25's width is followed long crossbeam 22 to short beam 21 grow gradually, increase transmission beam 25 and short beam 21's area of contact, make the power on the transmission beam 25 can be even act on short beam 21.
The long beam 22 comprises a first surface 26 facing the loading seat and a second surface 27 facing away from the loading seat, the first surface 26 and the second surface 27 are both parallel to the loading surface of the loading seat, the first surface 26 comprises a first action surface in line contact with the test piece 1, the second surface 27 comprises a second action surface in line contact with the second cylinder 4, when bearing a pressure, the first cylinder 3 abuts against the first action surface, the first action surface on which the first cylinder 3 acts is a contact line, and the contact line is eccentrically arranged with the axis of the test piece 1, when the pressure of the loading seat is continuously increased, the first action surface is continuously pressed by the first cylinder 3, so that the test piece 1 can be bent towards one side of the first cylinder 3, and the implementation and detection of two loads, namely axial pressure and bending moment are completed.
With reference to fig. 5 and 6, a wire load conversion device 5 is further disposed on the loading seat, the wire load conversion device 5 includes a bottom plate 51 attached to the loading surface, the bottom plate 51 is fixed to the loading seat by screws, and two connecting plates 52 extending toward the mounting portion are disposed on the bottom plate 51, the two connecting plates 52 are disposed in parallel, and a distance between the two connecting plates is greater than a width of the long beam 22, the long beam 22 is horizontally inserted between the two connecting plates 52, so that the connecting plates 52 are located outside the long beam 22, a through hole 53 is disposed at an end of the connecting plate 52 extending out of the long beam 22, the second cylinder 4 is inserted into the through hole 53, so that two ends of the second cylinder 4 are respectively connected to the two connecting plates 52, when the test piece 1 bears a tensile force of the loading seat, the loading seat drives the connecting plates 52 to move in a direction away from the test piece 1, when the second cylinder 4 bears a compressive force of a side wall of the through hole 53, a circumferential side surface of the second cylinder 4 abuts against a second acting surface, the second test piece 4 acts on the second acting surface as a line, and the second acting surface is eccentric to the axis of the contact line and the second cylinder 4 is pressed, when the tensile force of the loading seat is continuously increased, the tensile force, and the second cylinder 4 acts to perform bending moment detection of the bending and the bending of the contact line and the bending moment of the contact line.
With reference to fig. 7, in order to ensure that the distance between the cylinder and the test piece 1 is constant before loading, a first line load limiting device 6 for limiting the relative position of the first cylinder 3 and the test piece 1 is arranged on the long beam 22, a second line load limiting device 7 for limiting the relative position of the second cylinder 4 and the test piece 1 is further arranged on the long beam 22, and the first line load limiting device 6 and the second line load limiting device 7 are detachably connected with the mounting part. Specifically, the first line load limiting device 6 comprises a first mounting plate 61, the first mounting plate 61 is attached to a first acting surface and fixed on the long beam 22 through a bolt, two first limiting plates 62 arranged in parallel are arranged on one side of the first mounting plate 61, which is far away from the mounting portion, the two first limiting plates 62 form a first limiting groove 63 for placing the first cylinder 3, and the first cylinder 3 is inserted into the first limiting groove 63 and clamped by the two first limiting plates 62; the structure of second line load stop device 7 is the same with first line load stop device 6's structure, and specifically, second line load stop device 7 includes the second mounting panel, the second mounting panel laminating just through bolt fastening in the second action face on long crossbeam 22, one side that the second mounting panel deviates from the installation department is equipped with two parallel arrangement's second limiting plate, and two second limiting plates form the second spacing groove of placing second cylinder 4, second cylinder 4 inserts in the second spacing groove and is pressed from both sides tightly by two second limiting plates.
When carrying out the stretch bending test, at first install two line load conversion equipment 5's bottom plate 51 respectively to the loading seat under and on the loading seat, and make bottom plate 51 be fixed in the loading seat through the bolt on, install second line load stop device 7's second mounting panel to combined load generating device 2's second working face again on, and through the bolt fastening, again with two combined load generating device 2 that install hoist and mount alignment, insert second cylinder 4 in second spacing groove and through-hole 53, insert two junction pipes 23 respectively with the both ends of test piece 1 at last. When the test piece 1 is pulled outwards by the two loading seats, the second cylinder 4 is under the tensile force action of the line load conversion device 5, so that the peripheral side surface of the second cylinder 4 is abutted to the second action surface, the second action surface is continuously pressed under the condition that the tensile force is continuously increased, and the line loading of the axial tensile force and the bending moment is realized.
When a bending test is carried out, firstly, one combined load generating device 2 is fixed on the upper loading seat, then one end of a test piece 1 is fixed on the connecting short pipe 23 of the installed combined load generating device 2, then the other combined load generating device 2 is fixed on the lower loading seat, meanwhile, the other end of the test piece 1 is inserted into the connecting short pipe 23 of the other combined load generating device 2, then a first line load limiting device 6 is installed on a first acting surface of the combined load generating device 2, and finally, a first cylinder 3 is inserted into the first limiting groove 63 and the through hole 53. The loading surfaces of the two loading seats directly press the first cylinder 3, and the first cylinder 3 presses the first acting surface on the peripheral side surface of the first cylinder 3 when being under the pressure action of the loading seats, so that the linear loading of axial pressure and bending moment is realized.
After the installation is finished, before the combined load test is carried out, preloading under light load is required, whether the connection among the test piece 1, the combined load generating device 2 and the cylinder is reliable or not is checked, and the influence of gaps is eliminated. And (3) measuring the distance between the cylinder and the actual central line of the test piece 1, and confirming that the eccentricity meets the test requirement.
Combine fig. 8, be equipped with the anchor clamps 9 of centre gripping test piece on connecting stub 23, anchor clamps 9 include connecting seat 91 and a plurality of arc jack catch 92, the arc jack catch is the movable jack catch of centre gripping test piece tip, in connecting seat 91 stretched into connecting stub 23 and with connecting stub 23 threaded connection, connecting seat 91 was equipped with bevel pinion and bevel pinion, bevel pinion drive bevel pinion, bevel pinion's the back is equipped with the helicla flute, and each movable jack catch is connected with the helicla flute, be equipped with the spanner regulation hole on the week side of connecting seat 91, the spanner inserts the centre bore cooperation rotation bevel pinion of spanner regulation hole and bevel pinion.
Combine figure 9, 1 outside cover of test piece has protective sheath 8, protective sheath 8 is a ring, and the ring both sides are equipped with evenly distributed's elastic component 81, and the medial surface of elastic component 81 is the circular arc curved surface and laminates in the week side of test piece 1, prevents that test piece 1 from popping out and injuring the operator in bending or stretch bending test suddenly the fracture, improves the security of whole combination load test device.
In this embodiment, the line load conversion device 5 connected to the upper loading base is designed according to the size of the upper loading base, that is, the bottom plate 51 connected to the upper loading base should be matched with the size of the loading surface of the upper loading base, so as to increase the contact area between the upper loading base and the bottom plate 51 and improve the stability in the loading process, and similarly, the line load conversion device 5 connected to the lower loading base should also be matched with the size of the lower loading base.
In this embodiment, the design load of the combined load generating device 2 is 1.5 times or more the design load of the test piece 1, so that the combined load generating device 2 is prevented from being damaged due to overlarge acting force of the loading seat. The welding between the long beam 22, the short beam 21 and the drive beam 25 should also meet the load bearing requirements.
Other embodiments of the present invention than the preferred embodiments described above, and those skilled in the art can make various changes and modifications according to the present invention without departing from the spirit of the present invention, should fall within the scope of the present invention defined in the claims.
Claims (8)
1. The utility model provides a combination load test device, is equipped with the space of placing the test piece, its characterized in that including the testing machine that has two loading seats between two loading seats: the device is characterized by also comprising two combined load generating devices which are respectively connected to two ends of the test piece and are arranged face to face, wherein the combined load generating devices are provided with a first cylinder bearing the pressure action of a loading seat and a second cylinder bearing the tension action of the loading seat, and the first cylinder and the second cylinder are in line contact with the combined load generating devices; the combined load generating device comprises an installation part and a fixing part, the fixing part comprises a short cross beam vertical to the axis of the test piece, the installation part comprises a long cross beam parallel to the short cross beam, the length of the long cross beam is larger than that of the short cross beam, the width of the long cross beam is smaller than that of the short cross beam, one end of the long cross beam is parallel to one end of the short cross beam, a transmission beam is arranged on the long cross beam and parallel to the end of the short cross beam, the width of the transmission beam is gradually increased from the long cross beam to the short cross beam, a first cylinder and a second cylinder are both in contact with the combined load testing device, the contact line is eccentrically arranged with the axis of the test piece, the long cross beam comprises a first surface facing the load base and a second surface deviating from the load base, the first surface is parallel to the load base with the second surface, the first surface comprises a first acting surface in line contact with the test piece, and the second surface comprises a second acting surface in line contact with the second cylinder.
2. The combination load testing device of claim 1, wherein: and the loading seat is provided with a line load conversion device, and the line load conversion device is connected to the second cylinder.
3. The combination load testing device of claim 2, wherein: the line load conversion device comprises a bottom plate connected with the loading seat, the bottom plate is fixed on the loading seat through bolts, a connecting plate extending towards the installation part is arranged on the bottom plate, a through hole is formed in the end part, extending out of the installation part, of the connecting plate, and a second cylinder is inserted into the through hole.
4. The combination load testing device of claim 3, wherein: be equipped with the first line load stop device of injecing first cylinder and test piece relative position on the installation department, still be equipped with the second line load stop device of injecing second cylinder and test piece relative position on the installation department, first line load stop device and second line load stop device all can dismantle with the installation department and be connected.
5. The combination load testing device of claim 4, wherein: first line load stop device includes first mounting panel, first mounting panel passes through the bolt fastening on the first working face, one side that first mounting panel deviates from the installation department is equipped with the first limiting plate of two relative settings, two first limiting plates press from both sides tight first cylinder, second line load stop device includes the second mounting panel, the second mounting panel passes through the bolt fastening on the second working face, one side that the second mounting panel deviates from the installation department is equipped with the second limiting plate of two relative settings, two second limiting plates press from both sides tight second cylinder.
6. The combination load testing device of claim 3, wherein: the fixing part comprises a short beam, a short connecting pipe which is coaxial with the test piece is arranged on the short beam, the end part of the test piece extends into the short connecting pipe, and a reinforcing plate connected with the short beam is arranged on the outer side of the short connecting pipe.
7. The combination load testing device of claim 3, wherein: the fixture comprises a connecting seat and an arc-shaped clamping jaw, a small bevel gear and a large bevel gear are arranged in the connecting seat, the small bevel gear drives the large bevel gear, a spiral groove connected with the arc-shaped clamping jaw is formed in the back face of the large bevel gear, a wrench adjusting hole is formed in the side face of the connecting seat, and a wrench is inserted into the wrench adjusting hole and is matched with the center hole of the small bevel gear to rotate the small bevel gear.
8. A combined load testing device according to any one of claims 1 to 3, characterized in that: still include the protective sheath of suit in the test piece outside, the protective sheath is the ring, and the ring both sides are equipped with the elastic component of hugging closely test piece week side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610608521.4A CN106248484B (en) | 2016-07-28 | 2016-07-28 | Combined load test device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610608521.4A CN106248484B (en) | 2016-07-28 | 2016-07-28 | Combined load test device |
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| CN106248484A CN106248484A (en) | 2016-12-21 |
| CN106248484B true CN106248484B (en) | 2023-04-11 |
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| CN107356385B (en) * | 2017-08-23 | 2023-05-23 | 大连理工大学 | Novel marine flexible pipeline stretch bending and press bending combined experiment device |
| CN113109170B (en) * | 2021-04-20 | 2022-10-18 | 中国直升机设计研究所 | Composite material long beam strength test device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2758743Y (en) * | 2004-12-28 | 2006-02-15 | 北京交通大学 | Pulling pressing bending combined load test part |
| CN103900916B (en) * | 2014-03-06 | 2016-03-02 | 燕山大学 | A kind of stretch bending turns round Multi-axial Loading fatigue tester |
| CN104020038B (en) * | 2014-06-17 | 2016-05-25 | 山东大学 | A kind of vibration mechine combined test annex and static fatigue test method |
| CN203974122U (en) * | 2014-06-30 | 2014-12-03 | 南京迪威尔高端制造股份有限公司 | A kind of combined bidirectional prestressing force framework for support |
| CN104897460B (en) * | 2015-05-19 | 2018-06-01 | 吉林大学 | The piece fixture of multi-load coupling loading and its multiple physical field coupling loading method |
| CN204988909U (en) * | 2015-07-31 | 2016-01-20 | 西安科技大学 | Compound loading test machine of panel torsional bending |
| CN205826424U (en) * | 2016-07-28 | 2016-12-21 | 国网浙江省电力公司湖州供电公司 | A kind of combined load assay device |
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