CN211954630U - Compression-shear testing machine - Google Patents
Compression-shear testing machine Download PDFInfo
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- CN211954630U CN211954630U CN202020439864.4U CN202020439864U CN211954630U CN 211954630 U CN211954630 U CN 211954630U CN 202020439864 U CN202020439864 U CN 202020439864U CN 211954630 U CN211954630 U CN 211954630U
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- 238000012360 testing method Methods 0.000 title claims abstract description 34
- 230000005540 biological transmission Effects 0.000 claims abstract description 56
- 230000007246 mechanism Effects 0.000 claims abstract description 33
- 238000005096 rolling process Methods 0.000 claims abstract description 33
- 230000006835 compression Effects 0.000 claims abstract description 7
- 238000007906 compression Methods 0.000 claims abstract description 7
- 238000010008 shearing Methods 0.000 abstract description 40
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
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- 238000005259 measurement Methods 0.000 description 1
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Abstract
The utility model relates to a compression shear testing machine, including frame, horizontal loading mechanism and vertical loading mechanism, still include clamp plate and the shear plate of being connected with horizontal loading mechanism transmission, clamp plate and shear plate arrange side by side, the shear plate with form rubber support between the clamp plate and place space, its characterized in that: the vertical loading mechanism further comprises a force transfer plate arranged in parallel with the pressure plate, force transfer sliding bodies or force transfer rolling bodies are arranged on the upper side and the lower side of the force transfer plate, a force transfer plate force sensor is arranged between the force transfer plate and the rack, the force transfer plate and the pressure plate are located on the same side of the shear plate, a pressure plate force sensor is arranged between the pressure plate and the rack, or the force transfer plate and the pressure plate are located on two sides of the shear plate, and a shear plate force sensor is arranged between the transverse loading mechanism and the shear plate. The utility model provides a can accurate pressure of obtaining rubber support shearing force in test and cut testing machine.
Description
Technical Field
The utility model relates to a press and shear testing machine for carrying out mechanical properties test to rubber support.
Background
The compression-shear testing machine is important testing equipment for testing mechanical properties of a rubber support, the conventional compression-shear testing machine comprises a transverse loading mechanism and a vertical loading mechanism, the vertical loading mechanism applies vertical loading force to the rubber support to simulate bridge weight during use, the transverse loading mechanism applies horizontal shearing force to the rubber support to simulate shearing force applied to the rubber support in various environments, and therefore mechanical properties of the rubber support are evaluated.
Therefore, the horizontal shearing force of the transverse loading mechanism is an important standard for the stress of the rubber support, and whether the horizontal shearing force can be accurately obtained is crucial. Because some stray forces exist in the horizontal direction, the shear force cannot be measured intuitively in the prior art, and certain compensation is needed. The friction force measurement compensation device for the seismic isolation and reduction test system disclosed in Chinese patent CN210071479U comprises a main frame of a dynamic compression shear test machine, an upper pressure plate, a rolling sliding block, a rubber support, a lower pressure plate, a load sensor, a horizontal actuator, a spherical hinge and a software compensation system. The horizontal actuator is horizontal loading mechanism promptly, and the holding down plate links to each other with the horizontal actuator, and load sensor sets up between holding down plate and horizontal actuator, and horizontal actuator section of thick bamboo load sensor drives the holding down plate and applys the shearing row to rubber support, therefore the holding down plate also is called the shear plate. During the experiment, a rubber support is fixed on a lower pressing plate, specified vertical pressure F is applied to the rubber support to drive a horizontal actuator, the force recorded by a load sensor is 2 times of rolling friction force, different vertical pressures are applied to the rubber support, the rolling friction force under different vertical pressures can be obtained, and a relation curve between horizontal displacement and friction force is drawn for each pressure by using a software compensation system. And then, when the rubber support is subjected to a shearing test, correcting the shearing force applied to the rubber support through the relation curve so as to obtain the accurate shearing force of the rubber support.
The existing friction force compensation device has the problems that: the friction force compensation device is a test mode for obtaining a relation curve between horizontal displacement and friction force before a real shearing force test is carried out on a rubber support, the rubber support used for the test is a standard rubber support, various performances of the rubber support are not necessarily completely identical with those of the rubber support in the real shearing test, for example, the performances of the rubber support in the real shearing test are inconsistent with those of the standard rubber support due to different production batches, use durations and the like, at the moment, the shearing force compensation is carried out by using the friction force obtained by the standard rubber support test, and accurate test data can obviously not be obtained; in addition, the friction force of the rolling element is also related to the service life, whether the rolling element is deformed or not, the environmental humidity and the like, and if the rolling friction force of the rolling element in the friction force compensation test is inconsistent with the friction force of the rolling element in the real shearing test of the rubber support, the compensation mode of compensating the shearing force by using the relation curve chart is inaccurate.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a can accurately obtain the pressure of the shearing force that rubber support receives in the experiment and cut testing machine.
In order to solve the technical problem, the utility model provides a technical scheme as follows:
a compression shear testing machine comprises a frame, a transverse loading mechanism, a vertical loading mechanism, a pressure plate and a shear plate in transmission connection with the transverse loading mechanism, wherein the pressure plate and the shear plate are arranged in parallel, a rubber support placing space is formed between the shear plate and the pressure plate, the vertical loading mechanism also comprises a force transmission plate in parallel arrangement with the pressure plate, force transmission sliding bodies or force transmission rolling bodies are arranged on the upper side and the lower side of the force transmission plate, a force transmission plate force transducer is arranged between the force transmission plate and the frame,
the force transfer plate and the pressure plate are positioned at the same side of the shear plate, a pressure plate force transducer is arranged between the pressure plate and the frame,
or the force transfer plate and the pressure plate are positioned on two sides of the shear plate, and a shear plate force transducer is arranged between the transverse loading mechanism and the shear plate.
The force transmission plate and the pressure plate are positioned on the same side of the shear plate, and the force transmission sliding body or the force transmission rolling body on one side of the force transmission plate is in contact force transmission fit with the pressure plate.
And shear plate rolling bodies are arranged between one side of the shear plate, which is deviated from the force transmission plate and the pressure plate, and the rack.
The two sides of the shear plate are provided with the force transmission plate and the pressure plate.
The force transmission plate and the pressure plate are positioned on two sides of the shear plate, and the force transmission sliding body or the force transmission rolling body on one side of the force transmission plate is in contact force transmission fit with the shear plate.
The utility model has the advantages that: the press shear in the utility model can carry out direct press shear test on the rubber support, the rubber support is arranged between the shear plate and the press plate, the transverse loading mechanism applies shearing force to the rubber support through the shear plate, the vertical loading mechanism applies vertical loading force to the rubber support through the force transmission sliding body or the force transmission rolling body on both sides of the force transmission plate and the force transmission plate, the rubber support receives the shearing force of the shear plate and the acting force of the rubber support to the press plate, the rubber support has the same size and the opposite direction, therefore, only the acting force of the rubber support to the press plate needs to be obtained, the first setting form is that the force transmission plate and the press plate are positioned on the same side of the shear plate, a press plate force sensor is arranged between the press plate and the frame, the press plate force sensor measures the acting force received by the press plate, the acting force is equal to the acting force of the rubber support to, the friction force between the force transmission sliding body or the force transmission rolling body and the pressure plate is equal to one half of the indication value of the force transmission plate force sensor, so that the acting force of the rubber support to the pressure plate can be directly obtained, and the magnitude of the acting force is the shearing force of the shearing plate to the rubber support; according to the second arrangement mode, the shearing force of the shear plate to the rubber support and the friction force between the force transmission sliding body or the force transmission rolling body and the shear plate are equal to the indication value of the shear plate force sensor, so that the shearing force of the shear plate to the rubber support can be directly obtained. In the scheme, the shearing force of the shearing plate on the rubber support can be directly obtained, the rubber support to be tested can be directly subjected to an online shearing test, and even if the performance of the force transmission sliding body or the force transmission rolling body is changed, the force transmission plate force sensor can also obtain the friction force of the force transmission sliding body or the force transmission rolling body after the performance change in real time, so that the shearing force of the shearing plate on the rubber support can be accurately obtained.
Drawings
Fig. 1 is a schematic structural view of embodiment 1 of the present invention;
fig. 2 is a schematic view of the state in which the shear plate of fig. 1 is moved toward the left;
fig. 3 is a schematic structural view of embodiment 2 of the present invention.
Detailed Description
An embodiment 1 of a compression shear tester is shown in FIGS. 1 to 2: the loading device comprises a rack 9, a transverse loading mechanism and a vertical loading mechanism, wherein the rack comprises a base 10, a stand column 8 fixed on the base and a cross beam 7 arranged at the upper end of the stand column 8. The vertical loading mechanism comprises a vertical loading cylinder 1 which is vertically arranged, and the transverse loading mechanism comprises a transverse loading cylinder 13 which is horizontally arranged. The compression-shear testing machine further comprises a pressing plate 2 and a shear plate 3 arranged in parallel with the pressing plate, the shear plate 3 is in transmission connection with a transverse loading mechanism through a shear plate force sensor 12, the specific connection mode is that two ends of the shear plate force sensor are respectively connected with the transverse loading mechanism and the shear plate 3 through a hinge shaft 15, the axis of the hinge shaft 15 extends along the front-back direction, and the action direction of a piston rod of a transverse loading cylinder is the left-right direction. The height of the shear plate force sensor 12 is consistent with the height of the bottom surface of the shear plate, the height of the shear plate force sensor refers to the center height of the shear plate force sensor, namely the axis height of the hinge shaft 15, the pressing plate 2 is arranged on the lower side of the shear plate 3, a rubber support placing space for placing the rubber support 11 is formed between the pressing plate 2 and the shear plate 3, and the pressing plate is arranged on the upper end of a piston rod of the vertical loading cylinder 1 in the embodiment.
The vertical loading mechanism further comprises a force transfer plate 5 arranged in parallel with the pressing plate, the force transfer plate is arranged on the upper side of the shearing plate, a force transfer plate force sensor 14 is arranged between the force transfer plate 5 and the rack, force transfer rolling bodies are arranged on two sides of the upper side of the force transfer plate, the force transfer rolling bodies in the embodiment are balls, the force transfer rolling bodies 6 on the upper side are in contact force transfer fit with the cross beam, the force transfer rolling bodies 4 on the lower side are in contact force transfer fit with the upper end of the shearing plate 3, the friction force of the force transfer rolling bodies on the upper side to the force transfer plate is equal to the friction force of the force transfer rolling bodies on the lower side to the force transfer plate, and the force transfer rolling bodies on the.
When the device is used, a rubber support to be tested is directly placed between the shearing plate and the pressing plate, the vertical loading mechanism applies vertical loading force to the rubber support, the horizontal loading mechanism applies horizontal shearing force to the rubber support through the shearing plate, the shearing force of the shearing plate to the rubber support is recorded as F1, the reading of the shearing plate force sensor is F, the acting force of the force transmission rolling body on the lower side of the shearing plate is recorded as F2, F = F1+ F2, 2F2= the reading of the force transmission plate force sensor, and therefore the shearing force of the shearing plate to the rubber support can be directly obtained.
In other embodiments of the present invention: the force-transmitting rolling bodies can also be replaced by force-transmitting sliding bodies, for example sliding rails, the guiding direction of which extends in the left-right direction.
An embodiment 2 of a compression shear tester is shown in fig. 3: the difference between the embodiment 2 and the embodiment 1 is that the pressure plate 2 and the force transfer plate 5 are located on the same side of the shear plate, the pressure plate force sensor 16 is arranged between the pressure plate 2 and the frame, the height of the pressure plate force sensor 16 is consistent with that of the lower plate surface of the pressure plate, the force transfer rolling body 4 on the lower side of the force transfer plate is in contact force transfer fit with the upper end of the pressure plate 2, and the shear plate rolling body 17 is arranged between the shear plate and the frame. The vertical loading cylinder 1 of the vertical loading mechanism is arranged on the cross beam. The utility model discloses in, shear plate 3 is to rubber support 11 shearing force and rubber support 11 to clamp plate 2 effort size equidirectional opposite, and the half of the reading of dowel plate force cell sensor 14 is subtracted in clamp plate force cell sensor's reading is exactly the effort of rubber support to the clamp plate, and this effort is the same, opposite direction with shear plate to rubber support's shearing force size.
Claims (4)
1. The utility model provides a compression shear testing machine, includes frame, horizontal loading mechanism and vertical loading mechanism, still includes the clamp plate and the shear plate of being connected with horizontal loading mechanism transmission, and the clamp plate is arranged side by side with the shear plate, the shear plate with form the rubber support between the clamp plate and place space, its characterized in that: the vertical loading mechanism also comprises a force transmission plate which is arranged in parallel with the pressure plate, the upper side and the lower side of the force transmission plate are both provided with a force transmission sliding body or a force transmission rolling body, a force transmission plate force sensor is arranged between the force transmission plate and the frame,
the force transfer plate and the pressure plate are positioned at the same side of the shear plate, a pressure plate force transducer is arranged between the pressure plate and the frame,
or the force transfer plate and the pressure plate are positioned on two sides of the shear plate, and a shear plate force transducer is arranged between the transverse loading mechanism and the shear plate.
2. The compression-shear test machine according to claim 1, characterized in that: the force transmission plate and the pressure plate are positioned on the same side of the shear plate, and the force transmission sliding body or the force transmission rolling body on one side of the force transmission plate is in contact force transmission fit with the pressure plate.
3. The compression-shear test machine according to claim 2, wherein: and shear plate rolling bodies are arranged between one side of the shear plate, which is deviated from the force transmission plate and the pressure plate, and the rack.
4. The compression-shear test machine according to claim 1, characterized in that: the force transmission plate and the pressure plate are positioned on two sides of the shear plate, and the force transmission sliding body or the force transmission rolling body on one side of the force transmission plate is in contact force transmission fit with the shear plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020439864.4U CN211954630U (en) | 2020-03-31 | 2020-03-31 | Compression-shear testing machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020439864.4U CN211954630U (en) | 2020-03-31 | 2020-03-31 | Compression-shear testing machine |
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| CN211954630U true CN211954630U (en) | 2020-11-17 |
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| CN202020439864.4U Active CN211954630U (en) | 2020-03-31 | 2020-03-31 | Compression-shear testing machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111272583A (en) * | 2020-03-31 | 2020-06-12 | 河南牛帕力学工程研究院 | Compression-shear testing machine |
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- 2020-03-31 CN CN202020439864.4U patent/CN211954630U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111272583A (en) * | 2020-03-31 | 2020-06-12 | 河南牛帕力学工程研究院 | Compression-shear testing machine |
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