CN214668177U - Film impact test fixture for simply supported beam impact test machine - Google Patents
Film impact test fixture for simply supported beam impact test machine Download PDFInfo
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- CN214668177U CN214668177U CN202120946473.6U CN202120946473U CN214668177U CN 214668177 U CN214668177 U CN 214668177U CN 202120946473 U CN202120946473 U CN 202120946473U CN 214668177 U CN214668177 U CN 214668177U
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Abstract
The utility model discloses a film impact test anchor clamps for impact test machine of simply supported beam, wherein, the simply supported beam impact test centre gripping subassembly of two symmetries about including, every simply supported beam impact test centre gripping subassembly all includes a mounting plate, anchor clamps and mobile clamp splice, the mounting plate is installed on simply supported beam impact test machine, install an anchor clamps on the mounting plate, a double-layered groove has been seted up on the anchor clamps, mobile clamp splice can impress in the double-layered groove, put and place respectively in the double-layered groove that corresponds with the left end and the right-hand member of two simply supported beams impact test experimental films between the centre gripping subassembly, through mobile clamp splice and anchor clamps cooperation, fixed centre gripping. The utility model has the advantages of thin film material shock resistance test process and test condition have been simplified by a wide margin.
Description
Technical Field
The utility model relates to a technical field that the film performance detected especially relates to a simply supported roof beam is film impact test anchor clamps for impact test machine.
Background
The simple beam impact tester is used for measuring the impact toughness of non-metal brittle materials such as hard plastics, fiber reinforced composites, nylon, glass fiber reinforced plastics, ceramics, cast stone, plastic electrical appliance insulating materials and the like. The impact testing machine for the simply supported beam has become a common device for material impact performance inspection in scientific research institutions, various scientific research institutions and related factories and mines due to the reasons of simple structure, low manufacturing cost, reliable operation and results and the like. The working principle of the simple beam impact testing machine is that a sample to be tested is placed at a specified position of the simple beam impact testing machine, then a pendulum bob with certain mass freely falls down to apply impact bending load to the sample to break the sample, and the impact resistance toughness of the material is evaluated by using the impact energy consumed by the unit section of the sample due to impact fracture.
For the impact toughness measurement of the film material, the impact toughness measurement cannot be carried out by adopting a simple beam impact tester due to the soft structure of the film material. Compared with the impact toughness determination method of the brittle non-metallic material, the impact toughness determination scheme of the film material is more complex, and the general process is as follows:
1. measuring the test thickness according to GB-T6672-2001, measuring a point at the center of all samples, and taking the arithmetic mean value of the test of 10 samples;
2. selecting a punch according to the impact energy of the pendulum bob required by the test, and enabling the reading to be between 10 and 90 percent of the full range;
3. calibrating the instrument according to the instrument use rule;
4. the sample is flattened and put into a holder to be clamped, and the sample is not wrinkled or excessively high in peripheral tension. The impacted surfaces of 10 samples are consistent;
5. the pendulum was hung on the release, the test was started on the computer by pressing a button, the pendulum was allowed to impact the test specimen, the same procedure was followed for 10 tests, and the arithmetic mean of the 10 test specimens was automatically calculated after the test was completed.
Compared with a simply supported beam impact test, the impact test process of the film material is complex, the structure of the test equipment is complex, and how to provide a scheme with simple structure and convenient operation to realize the impact toughness test of the film material is the problem to be solved.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a film impact test anchor clamps for impact test machine of simply supported beam in order to solve the problem of mentioning among the background art.
In order to realize the technical purpose, the utility model discloses the technical scheme who takes does:
the utility model provides a simply supported beam is film impact test anchor clamps for impact test machine, wherein, the simply supported beam impact test centre gripping subassembly including two left and right symmetries, every simply supported beam impacts the test centre gripping subassembly and all includes a mounting plate, anchor clamps and mobile clamp splice, the mounting plate is installed on simply supported beam impact test machine, install an anchor clamps on the mounting plate, a double-layered groove has been seted up on the anchor clamps, mobile clamp splice can be impressed in pressing from both sides the groove, put and place respectively in the double-layered groove that corresponds with the left end and the right-hand member of two simply supported beam impact test centre gripping subassemblies between the experiment film, through mobile clamp splice and anchor clamps cooperation, fixed centre gripping.
In order to optimize the technical scheme, the specific measures adopted further comprise:
the clamp fixing holes which penetrate through the clamp are formed in the clamp, the fastening plate holes which are formed in the fastening plate and are used for fixing the clamp are formed in the fastening plate, and the fixing screws penetrate through the clamp fixing holes and the fastening plate holes simultaneously to fixedly connect the clamp with the fastening plate.
The clamp fixing holes are strip-shaped holes with certain lengths in the left and right directions, and the clamping distance of the two simply-supported beam impact experiment clamping assemblies is adjusted by changing the positions of the strip-shaped holes relative to the fixing screws.
The clamp is provided with a matching hole, the movable clamping block is provided with a clamping block positioning hole matched with the matching hole, and the positioning bolt penetrates through the clamping block positioning hole and the matching hole simultaneously to limit the movable clamping block in the clamping groove.
Foretell clamp splice locating hole is located mobile clamp splice middle part, and the one end that mobile clamp splice is close to the experimental film is the exposed core, and the one end of keeping away from the experimental film is for adjusting the end, and the regulation hole that runs through around the regulation end of mobile clamp splice is seted up, and adjusting screw can pass the regulation hole, supports in clamp groove bottom, makes the regulation end perk of mobile clamp splice, and the exposed core pushes down, increases the clamping-force degree of mobile clamp splice to the experimental film.
The experimental film is a dumbbell-shaped test film sample with or without a notch in the middle.
The clamp and the movable clamping block are made of metal materials.
The utility model has the advantages of it is following:
1. the utility model discloses a to the transformation design of current simple beam anchor clamps realized the impact property survey to film material, need not to adopt the film material among the prior art's impact toughness survey isolated plant, adopt the wider simple beam impact tester of suitability to realize film material's impact toughness survey, the test result differs little with the anti pendulum impact test method of national standard GBT8809-2015 plastic film result obtained, film material impact resistance test process and test condition have been simplified by a wide margin.
2. The utility model discloses still improve mobile clamp splice, increased the regulation hole, can adjust the clamping force degree of mobile clamp splice to the experiment film through adjusting screw, thereby make the utility model discloses a device can adapt to more different types of film material.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a right side view of FIG. 1;
FIG. 3 is a schematic view of the structure of the clamp;
FIG. 4 is a cross-sectional view of the clamp;
FIG. 5 is a schematic structural view of the movable clamp block;
fig. 6 is a cross-sectional view of the movable clamp block.
The label names in the figure: the clamp comprises a fastening plate 1, a clamp 2, a clamp fixing hole 21, a matching hole 22, a clamp groove 23, a movable clamp block 3, a clamp block positioning hole 31 and an adjusting hole 32.
Detailed Description
Embodiments of the present invention are described in further detail below with reference to the accompanying drawings.
The utility model provides a film impact test anchor clamps for simple beam impact test machine of embodiment, wherein, the simple beam impact test centre gripping subassembly including two bilateral symmetry, every simple beam impact test centre gripping subassembly all includes a mounting plate 1, anchor clamps 2 and mobile clamp splice 3, mounting plate 1 is installed on simple beam impact test machine, install an anchor clamps 2 on mounting plate 1, a double-layered groove 23 has been seted up on anchor clamps 2, mobile clamp splice 3 can impress in the double-layered groove 23, put respectively placing in the double-layered groove 23 that corresponds with the left end and the right-hand member of two simple beam impact test centre gripping subassemblies between, through mobile clamp splice 3 and the cooperation of anchor clamps 2, fixed centre gripping.
In the embodiment, the fixture 2 is provided with a fixture fixing hole 21 which penetrates through the front and the back, the fastening plate 1 is provided with a fastening plate hole corresponding to the fixture fixing hole 21, and the fixing screw penetrates through the fixture fixing hole 21 and the fastening plate hole simultaneously to fixedly connect the fixture 2 and the fastening plate 1.
In the embodiment, anchor clamps fixed orifices 21 are the bar hole that has certain length in the left and right directions, through changing the position of bar hole for the set screw, realize two simply supported beams and strike the regulation of experiment centre gripping subassembly's centre gripping interval.
In the embodiment, the clamp 2 is provided with a matching hole 22, the movable clamp block 3 is provided with a clamp block positioning hole 31 matched with the matching hole 22, and the positioning bolt simultaneously penetrates through the clamp block positioning hole 31 and the matching hole 22 to limit the movable clamp block 3 in the clamp groove 23.
In the embodiment, clamp splice locating hole 31 is located movable clamp splice 3 middle part, the one end that movable clamp splice 3 is close to the experimental film is the exposed core, the one end of keeping away from the experimental film is for adjusting the end, the regulation hole 32 that runs through around the regulation end of movable clamp splice 3 is seted up, adjusting screw can pass regulation hole 32, support in clamp groove 23 bottom, the regulation end perk that makes movable clamp splice 3, the exposed core pushes down, increase the clamping-force degree of movable clamp splice 3 to the experimental film.
In the embodiment, the experimental film is a dumbbell-shaped test film sample with a notch in the middle, and the experimental film can also be a dumbbell-shaped test film sample without a notch and is selected according to actual conditions.
In the embodiment, the clamp 2 and the movable clamp block 3 are made of metal materials.
The utility model discloses an adopt simple beam impact testing machine to test the analysis to the impact toughness of film material, concrete implementation step is as follows:
step 1: cutting a film sample to be tested into a dumbbell-shaped test sample with a notch in the middle;
step 2: installing a simple beam impact experiment clamping assembly on a simple beam impact tester in a manner shown in fig. 1-2, clamping two ends of a thin film material between a clamp 2 and a movable clamping block 3, rotating an adjusting screw to ensure that the movable clamping block 3 clamps the thin film material, and positioning the middle part of the thin film material in a region to be impacted;
and step 3: releasing a pendulum bob of the simply supported beam impact testing machine, and carrying out impact damage on a film test strip with a notch fixed on the testing machine;
and 4, step 4: and reading the energy consumed after the film is broken by the impact of the pendulum bob, and calculating according to the size of the notch of the film to obtain the impact toughness of the film material to be measured.
The following is a comparison table of the impact toughness of the film material tested by the device of the utility model and the corresponding impact toughness of the film material given by GB-T6672-:
therefore, the test result of the utility model is similar to the measurement result obtained by the national standard GBT8809-2015 plastic film pendulum impact resistance test method, and the clamp is practically usable.
Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, a plurality of modifications and decorations without departing from the principle of the present invention should be considered as the protection scope of the present invention.
Claims (7)
1. The utility model provides a film impact test anchor clamps for impact test machine of simply supported beam, characterized by: simple beam impact experiment clamping component including two bilateral symmetries, every simple beam impact experiment clamping component all includes a mounting plate (1), anchor clamps (2) and mobile clamp splice (3), mounting plate (1) install on simple beam impact test machine, install an anchor clamps (2) on mounting plate (1), anchor clamps (2) on seted up one and pressed from both sides groove (23), in clamp groove (23) can be impressed in mobile clamp splice (3), place in the left end and the right-hand member of two simple beam impact experiment thin films between the clamping component and place respectively in corresponding clamp groove (23), through mobile clamp splice (3) and anchor clamps (2) cooperation, fixed centre gripping.
2. The film impact test fixture for the simply supported beam impact tester as claimed in claim 1, wherein: the clamp (2) is provided with a clamp fixing hole (21) which penetrates through the clamp from front to back, the fastening plate (1) is provided with a fastening plate hole which is communicated with the clamp fixing hole (21), and a fixing screw penetrates through the clamp fixing hole (21) and the fastening plate hole simultaneously to fixedly connect the clamp (2) and the fastening plate (1).
3. The film impact test fixture for the simply supported beam impact tester as claimed in claim 2, wherein: the clamp fixing holes (21) are strip-shaped holes with certain lengths in the left and right directions, and the clamping distance of the two simply-supported beam impact experiment clamping assemblies is adjusted by changing the positions of the strip-shaped holes relative to the fixing screws.
4. The thin film impact test fixture for the simply supported beam impact tester as claimed in claim 3, wherein: the fixture is characterized in that a matching hole (22) is formed in the fixture (2), a clamping block positioning hole (31) matched with the matching hole (22) is formed in the movable clamping block (3), a positioning bolt penetrates through the clamping block positioning hole (31) and the matching hole (22) at the same time, and the movable clamping block (3) is limited in the clamping groove (23).
5. The thin film impact test fixture for the simply supported beam impact tester as claimed in claim 4, wherein: clamp splice locating hole (31) be located mobile clamp splice (3) middle part, the one end that mobile clamp splice (3) are close to the experimental film is the exposed core, keeps away from the one end of experimental film and is held for adjusting, the regulation end of mobile clamp splice (3) offer around regulation hole (32) that run through, adjusting screw can pass regulation hole (32), support in pressing from both sides groove (23) bottom, make the regulation end perk of mobile clamp splice (3), the exposed core pushes down, increases the clamping-force degree of mobile clamp splice (3) to the experimental film.
6. The thin film impact test fixture for the simply supported beam impact tester as claimed in claim 5, wherein: the experimental film is a dumbbell-shaped test film sample with or without a notch in the middle.
7. The film impact test fixture for the simply supported beam impact tester as claimed in claim 1, wherein: the clamp (2) and the movable clamping block (3) are made of metal materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120946473.6U CN214668177U (en) | 2021-05-06 | 2021-05-06 | Film impact test fixture for simply supported beam impact test machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120946473.6U CN214668177U (en) | 2021-05-06 | 2021-05-06 | Film impact test fixture for simply supported beam impact test machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214668177U true CN214668177U (en) | 2021-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120946473.6U Active CN214668177U (en) | 2021-05-06 | 2021-05-06 | Film impact test fixture for simply supported beam impact test machine |
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| Country | Link |
|---|---|
| CN (1) | CN214668177U (en) |
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2021
- 2021-05-06 CN CN202120946473.6U patent/CN214668177U/en active Active
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