CN214750274U - Propellant clamping device - Google Patents
Propellant clamping device Download PDFInfo
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- CN214750274U CN214750274U CN202120375118.8U CN202120375118U CN214750274U CN 214750274 U CN214750274 U CN 214750274U CN 202120375118 U CN202120375118 U CN 202120375118U CN 214750274 U CN214750274 U CN 214750274U
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- clamping device
- propellant
- transverse plate
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Abstract
The utility model provides a propellant clamping device through designing first clamping device and second clamping device, presss from both sides tight examination sample strip both ends to utilize first clamping device and second clamping device's relative being close to and keeping away from and make the sample strip tensile or relax. The stretched sample strip can be subjected to micrometer CT test or scanning electron microscope test after gold plating, and damage forms such as cracks, pores and the like in the propellant are observed. Has universality in the field of observation of the internal surface interface of the polymer composite material.
Description
Technical Field
The utility model belongs to the technical field of the analysis and test, a polymer composite interface observation's experimental apparatus and method are related to, in particular to propellant clamping device.
Background
The composite solid propellant is a high-solid filled energetic polymer composite material, which mainly comprises a binder matrix, an oxidant (such as AP, HMX and the like), metal fuel (Al powder and the like) and other various small components. The mechanical property is one of the bases for realizing other properties such as energy property and the like. The propellant is in a stretched state under the action of self gravity and the like in the storage process; in the experimental study, the state can be simulated by a fixed strain and fixed load tensile experiment. Due to the Poisson effect of the propellant, cracks and pores can be completely presented during stretching, and once the propellant is stopped from being loaded, the propellant retracts immediately and the cracks close and cannot be observed. On the other hand, the propellant is a non-conductive material, gold needs to be plated on the surface when the morphology is observed through a scanning electron microscope, and if a stretching experiment is carried out after gold plating according to the existing method, holes generated by stretching are not plated with gold and cannot be observed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned defect, provide a propellant clamping device, through designing first clamping device and second clamping device, press from both sides tight sample strip both ends to utilize first clamping device and second clamping device's relative approach and keep away from and make the sample strip tensile or relax. The stretched sample strip can be subjected to micrometer CT test or scanning electron microscope test after gold plating, and damage forms such as cracks, pores and the like in the propellant are observed. Has universality in the field of observation of the internal surface interface of the polymer composite material.
In order to realize the purpose of the utility model, the utility model provides a following technical scheme:
a propellant clamping device comprises a first clamping device and a second clamping device, wherein the first clamping device and the second clamping device respectively clamp two ends of a test sample strip along the length direction, can relatively move along the length direction of the test sample strip and are used for stretching or loosening the test sample strip;
the first clamping device comprises a first chuck component and a first supporting component; the second clamping device comprises a second chuck component and a second supporting component; the first chuck component and the second chuck component are used for clamping two ends of a test strip along the length direction, and the first supporting component and the second supporting component can move relatively along the length direction of the test strip so as to drive the first chuck component and the second chuck component to stretch or relax the test strip.
Further, the first chuck component comprises an upper anvil block and a lower anvil block, the upper anvil block and the lower anvil block (3) are respectively positioned above and below the test sample strip and are used for clamping the test sample strip after being fixed; the structure of the second chuck component is the same as that of the first chuck component.
Further, the first support assembly comprises a first support vertical plate and a first support transverse plate which are perpendicular to each other; the second supporting assembly comprises a second supporting vertical plate and a second supporting transverse plate which are perpendicular to each other;
the upper end of a first supporting vertical plate is fixedly connected with a first chuck component, the lower end of the first supporting vertical plate is fixedly connected with a first supporting transverse plate, the upper end of a second supporting vertical plate is fixedly connected with a second chuck component, and the lower end of the second supporting vertical plate is fixedly connected with a second supporting transverse plate; the lower surface of the first supporting transverse plate is matched with the upper surface of the second supporting transverse plate, so that relative movement along the length direction of the sample strip is realized.
Further, the upper anvil block and the lower anvil block are fixed through screws; the number of the screws is more than or equal to 2, and the distance between the screws in the width direction of the test strip is 20-40 mm.
Furthermore, a handheld rod is arranged on the first supporting device or the second supporting device and used for pushing and pulling the first supporting device or the second supporting device to realize the relative movement between the first supporting device and the second supporting device.
Furthermore, the lower surface of the first supporting transverse plate is provided with a guide rail, the upper surface of the second supporting transverse plate is provided with a groove, and the relative movement of the first supporting transverse plate and the second supporting transverse plate (10) along the length direction of the sample strip is realized through the matching of the guide rail and the groove.
The propellant clamping device is characterized by further comprising a fixed mounting base, wherein the fixed mounting base is used for fixing the propellant clamping device on the experiment table top; the fixed mounting base comprises a supporting base and a device clamping sleeve; the supporting base is cylindrical and is arranged on the lower surface of the first supporting device or the second supporting device; the device clamping sleeve is cylindrical and is fixed on the experiment table top; the axes of the supporting base and the device clamping sleeve are vertical to the experiment table surface; the propellant clamping device is fixed on the experiment table top by the matching of the device clamping sleeve and the supporting base.
Furthermore, the supporting base and the device clamping sleeve are connected through 2 mutually perpendicular bolts, and the stability of the supporting base and the device clamping sleeve in all directions is guaranteed.
Further, the fixed mounting base further comprises a fixed mounting base bottom plate, the device clamping sleeve is fixed in the center of the mounting base bottom plate, and the fixed mounting base bottom plate is mounted on the experiment table top through bolts.
Furthermore, a transverse plate screw is installed on the first supporting transverse plate, a threaded hole matched with the second supporting transverse plate is formed in the second supporting transverse plate along the length direction of the sample strip, and after the first supporting transverse plate and the second supporting transverse plate perform relative motion along the length direction of the sample strip, locking is achieved through the cooperation of the transverse plate screw and the threaded hole.
Furthermore, scale marks are arranged on the first supporting assembly or the second supporting assembly along the length direction of the sample, and are used for recording the relative displacement of the first supporting assembly and the second supporting assembly along the length direction of the sample strip.
A propellant clamping method is realized by adopting the propellant clamping device, and comprises the following steps:
s1, fixing the propellant clamping device on the experiment table top, and enabling the first clamping device and the second clamping device to be relatively close to each other;
s2, fixing two ends of the sample strip by using a first clamping device and a second clamping device;
s3, pulling the first clamping device or the second clamping device to keep the sample strip in a stretching state;
s4 tests the test strip in a stretched state.
Further, in step S4, the testing includes a micro CT testing or a scanning electron microscope testing after gold-plating the sample strip.
Compared with the prior art, the utility model following beneficial effect has:
(1) the utility model relates to a propellant clamping device through designing first clamping device and second clamping device, presss from both sides tight examination sample strip both ends to utilize first clamping device and second clamping device's relative being close to and keeping away from and make the sample strip tensile or relax.
(2) The utility model relates to a propellant clamping device, which is characterized in that a first clamping device and a second clamping device are respectively provided with a guide rail and a groove, so that the first clamping device and the second clamping device realize relative motion; in addition, the locking of a specific position is realized through the matching of the transverse plate screw and the threaded hole.
(3) The utility model relates to a propellant clamping device is equipped with the scale mark on first clamping device or second clamping device, but the tensile degree of accurate control test sample strip.
(4) The utility model relates to a propellant clamping device has designed the support base and the device centre gripping cover that match with the experiment mesa, guarantees propellant clamping device at the stability of experiment mesa.
(5) The utility model relates to a propellant clamping device utilizes the tensile examination sample strip of propellant clamping device can carry out micron CT test, perhaps carries out scanning electron microscope test after the gilding, observes damage forms such as crackle, hole in the propellant, and convenient damage circumstances such as crackle and hole of simulating the propellant when deciding the load, deciding the strain effectively conform with true state.
(6) The utility model relates to a propellant clamping device realizes the tensile to the sample strip, and is simple and easy, can solve the problem that can't observe inside hole, interface, crackle etc. behind the propellant damage at present, observes the field at the inside surface interface of polymer composite and has the universality.
Drawings
FIG. 1 is a schematic view of a propellant clamping device of the present invention when a test sample strip is in an unstretched state;
FIG. 2 is a schematic view of a propellant clamping device of the present invention in a test sample strip tensile state;
fig. 3 is a schematic structural view of the first supporting transverse plate of the present invention;
fig. 4 is a schematic view of the structure of the fixed mounting base of the present invention.
Detailed Description
The features and advantages of the present invention will become more apparent and appreciated from the following detailed description of the invention.
The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
The utility model relates to a propellant clamping device and method is applicable to and utilizes scanning electron microscope to survey non-conductive material, like the method and the device of compound solid propellant sample internal interface, adopts this method can survey sample application after a definite force sample appearance change of sample internal interface and polymer base member to this mechanical properties etc. as according to the representation material. The designed device is utilized to clamp the sample and apply a certain force to the sample to stretch the sample to a certain distance, so that the appearance of an internal interface of the non-conductive material after applying a certain force is observed for the first time. And gold plating is carried out on the surface of the stretched sample by using sample gold plating equipment, so that the interior of a gap generated by stretching can be plated with gold, and a scanning electron microscope experiment is carried out after gold plating to observe the interior appearance of the stretched composite solid propellant sample. The device can also be used for directly carrying out the micron CT experiment without gold plating.
A propellant holding device, as shown in fig. 1 and 2, comprising a first holding device and a second holding device, which respectively hold both ends of a test piece strip 18 in a length direction and are relatively movable in the length direction of the test piece strip 18, for stretching or releasing the test piece strip 18;
the first clamping device comprises a first chuck component and a first supporting component; the second clamping device comprises a second chuck component and a second supporting component; the first chuck component and the second chuck component are used for clamping two ends of the test sample strip 18 along the length direction, and the first supporting component and the second supporting component can move relatively along the length direction of the test sample strip 18 so as to drive the first chuck component and the second chuck component to stretch or release the test sample strip 18.
Further, the first chuck assembly comprises an upper anvil block 1 and a lower anvil block 3, wherein the upper anvil block 1 and the lower anvil block 3 are respectively positioned above and below the test sample strip 18 and are used for clamping the test sample strip 18 after being fixed; the structure of the second chuck component is the same as that of the first chuck component.
Further, the first supporting component comprises a first supporting vertical plate 4 and a first supporting transverse plate 5 which are perpendicular to each other; the second supporting assembly comprises a second supporting vertical plate 9 and a second supporting transverse plate 10 which are perpendicular to each other;
the upper end of a first supporting vertical plate 4 is fixedly connected with a first chuck component, the lower end of the first supporting vertical plate is fixedly connected with a first supporting transverse plate 5, the upper end of a second supporting vertical plate 9 is fixedly connected with a second chuck component, and the lower end of the second supporting vertical plate is fixedly connected with a second supporting transverse plate 10; the lower surface of the first supporting transverse plate 5 and the upper surface of the second supporting transverse plate 10 are matched with each other to realize relative movement along the length direction of the sample strip 18.
Further, the upper anvil block 1 and the lower anvil block 3 are fixed through screws 2, two screw holes are formed in the positions, corresponding to the upper anvil block 1, of the lower anvil block 3, and the upper portion and the lower portion are fixed through the screws 2; the number of the screws 2 is more than or equal to 2, the distance between the two screw holes is larger than the width of the sample strip, namely, the distance between the screws in the width direction of the sample strip 18 is 20-40 mm. Preferably, the upper anvil block 1 and the lower anvil block 3 have a length of 30 to 50mm, a width of 10mm, and a thickness of 10 mm.
Further, a hand-held rod 14 is arranged on the first supporting device or the second supporting device and used for pushing and pulling the first supporting device or the second supporting device to realize the relative movement between the first supporting device and the second supporting device.
Further, as shown in fig. 3, the lower surface of the first horizontal supporting plate 5 is provided with a guide rail 8, and the guide rail 8 is two cylindrical sliding bars 8; the upper surface of the second supporting transverse plate 10 is provided with a groove 11, and the relative movement of the first supporting transverse plate 5 and the second supporting transverse plate 10 along the length direction of the sample strip 18 is realized through the matching of the guide rail 8 and the groove 11. The first supporting transverse plate 5 and the second supporting transverse plate 10 can only slide left and right and can not move up and down, so that the whole device can not be unstable due to vertical separation during stretching.
Further, propellant clamping device still includes the fixed mounting base, and the fixed mounting base is used for fixing propellant clamping device on the experiment mesa.
Further, as shown in fig. 4, the fixed mounting base includes a support base 15 and a device holding sleeve 19; the supporting base 15 is cylindrical and is arranged on the lower surface of the first supporting device or the second supporting device; the device clamping sleeve 19 is cylindrical and is fixed on the experiment table top, and the propellant clamping device is fixed on the experiment table top by matching the device clamping sleeve 19 with the supporting base 15. Preferably, the supporting base 15 is disposed on the lower surface of the second supporting horizontal plate 10 and at one end far from the second supporting vertical plate 9, so as to ensure that the sample strip can be stretched to a displacement as large as possible. Preferably, the whole clamping device is placed on the device clamping sleeve 19, and the left-right direction screw hole 16 and the front-back direction screw hole 17 are matched with the bolt, so that the connection with the device clamping sleeve 19 is realized and the stability is kept. The left and right screw holes 16 and the front and rear screw holes 17 are arranged at staggered positions up and down to ensure that the bolt penetrates through the whole screw hole. The fixed mounting base also comprises a fixed mounting base bottom plate 20, and the device clamping sleeve 19 is mounted on the experiment operating table through four screw holes 21 of the fixed mounting base bottom plate 20 through bolts; the device clamping sleeve 19 is fixed with the fixed mounting base bottom plate 20 by welding or integral forming.
Further, diaphragm screw 6 is installed to first support diaphragm 5, be equipped with first support diaphragm screw hole 7 on the first support diaphragm 5, diaphragm screw 6 passes first support diaphragm screw hole 7 after-fixing on first support diaphragm 5, second support diaphragm 10 is equipped with the screw hole 13 that matches with it along sample strip 18 length direction, first support diaphragm 5 and second support diaphragm 10 carry out the relative motion back along sample strip 18 length direction, realize the locking through the cooperation of diaphragm screw 6 with screw hole 13.
Furthermore, the first support assembly or the second support assembly is provided with scale marks 12 along the length direction of the sample, and the scale marks are used for recording the relative displacement of the first support assembly and the second support assembly along the length direction of the sample strip 18. Preferably, the scale marks 12 are arranged between the grooves 11, a plurality of pairs of threaded holes 13 are arranged between the scale marks 12 and the grooves 11, and a connecting line of each pair of threaded holes 13 is perpendicular to the length direction of the test bed 18.
Further, the lower anvil block is fixed to a second supporting vertical plate 9 or a first supporting vertical plate 4, a first supporting vertical plate 4 and a first supporting transverse plate 5, a second supporting vertical plate 9 and a second supporting transverse plate 10, a first supporting device or a second supporting device and the hand-held rod 14, and a supporting base 15 and a supporting device or a second supporting device in a welding manner.
Furthermore, the structural material of the propellant clamping device is stainless steel.
A propellant clamping method is realized by adopting the propellant clamping device, and comprises the following steps:
s1, fixing the propellant clamping device on the experiment table top, and enabling the first clamping device and the second clamping device to be relatively close to each other; placing the clamping device in a device clamping sleeve 19 fixedly provided with a base, screwing and fixing the clamping device through a left-right screw hole and a front-back screw hole by using bolts, keeping the whole sample clamping device stable, overlapping the first clamping device and the second clamping device to the maximum extent through the groove 11 and the guide rail 8, as shown in figure 1, then matching the transverse plate screw 6 with the threaded hole 13, and screwing the transverse plate screw 6 to fix the clamp;
s2 holding the ends of the test strip 18 with the first and second holding devices, the process keeping the test strip 18 flat and unstretched, as shown in fig. 2;
s3, loosening the transverse plate screw 6, and pulling the first clamping device or the second clamping device to keep the sample strip 18 in a stretching state;
s4 tests the sample strip 18 in a stretched state.
In step S4, the test includes a micrometer CT test or a scanning electron microscope test performed after gold plating the test strip 18.
Example 1
The upper anvil block 1 and the lower anvil block 3 have a size of 20 × 10 × 5mm, and have two screw holes along a direction 20mm long, and a distance between the two screw holes is 10 mm.
The clamping method comprises the following steps:
(1) placing the clamping device in a device clamping sleeve 19, screwing and fixing the clamping device through a left-right screw hole 16 and a front-back screw hole 17 by using bolts to keep the whole clamping device stable, overlapping the first clamping device and the second clamping device with the guide rail 8 to the maximum extent through the groove 11, and then screwing a transverse plate screw 6 to fix the clamp;
(2) both ends of a test specimen 18 having a size of 40 × 10 × 2 (unit mm) are fixed with an upper anvil 1 and a lower anvil 3 and a screw 2, by which the test specimen is kept flat and unstretched;
(3) the left transverse plate screw 6 is unscrewed, the hand-held rod 14 is pulled to stretch the sample strip 18 for a certain distance, and then the transverse plate expansion 6 is fixed to keep the sample strip in a stretching state.
(4) Then the micrometer CT test can be directly carried out on the stretched sample strip, or the scanning electron microscope test can be carried out after the gold plating is carried out on the sample.
The present invention has been described in detail with reference to the specific embodiments and the exemplary embodiments, but the description should not be construed as limiting the present invention. Those skilled in the art will appreciate that various equivalent substitutions, modifications or improvements may be made to the technical solution of the present invention and embodiments thereof without departing from the spirit and scope of the present invention, and all fall within the scope of the present invention. The protection scope of the present invention is subject to the appended claims.
The details of the present invention not described in detail in the specification are well known to those skilled in the art.
Claims (10)
1. The propellant clamping device is characterized by comprising a first clamping device and a second clamping device, wherein the first clamping device and the second clamping device respectively clamp two ends of a test sample strip along the length direction, can relatively move along the length direction of the test sample strip and is used for stretching or loosening the test sample strip;
the first clamping device comprises a first chuck component and a first supporting component; the second clamping device comprises a second chuck component and a second supporting component; the first chuck component and the second chuck component are used for clamping two ends of a test sample strip (18) along the length direction, and the first supporting component and the second supporting component can move relatively along the length direction of the test sample strip (18) so as to drive the first chuck component and the second chuck component to stretch or loosen the test sample strip (18).
2. A propellant gripping device according to claim 1 wherein the first cartridge assembly comprises an upper anvil block (1) and a lower anvil block (3), the upper anvil block (1) and the lower anvil block (3) being located above and below the test strip (18), respectively, and being secured for gripping the test strip (18); the structure of the second chuck component is the same as that of the first chuck component.
3. Propellant clamping device according to claim 1, characterized in that the first support assembly comprises a first support riser (4) and a first support cross plate (5) perpendicular to each other; the second supporting component comprises a second supporting vertical plate (9) and a second supporting transverse plate (10) which are perpendicular to each other;
the upper end of a first supporting vertical plate (4) is fixedly connected with a first chuck component, the lower end of the first supporting vertical plate is fixedly connected with a first supporting transverse plate (5), the upper end of a second supporting vertical plate (9) is fixedly connected with a second chuck component, and the lower end of the second supporting vertical plate is fixedly connected with a second supporting transverse plate (10); the lower surface of the first supporting transverse plate (5) is matched with the upper surface of the second supporting transverse plate (10) to realize relative movement along the length direction of the test strip (18).
4. Propellant gripping device according to claim 2, wherein the upper anvil (1) and the lower anvil (3) are secured by means of screws (2); the number of the screws (2) is more than or equal to 2, and the distance between the screws in the width direction of the sample strip (18) is 20-40 mm.
5. Propellant gripping means according to claim 1, wherein the first or second support means is provided with a hand-held lever (14) for pushing or pulling the first or second support means to effect relative movement between the first and second support means.
6. The propellant clamping device as claimed in claim 3, wherein the lower surface of the first supporting transverse plate (5) is provided with a guide rail (8), the upper surface of the second supporting transverse plate (10) is provided with a groove (11), and the first supporting transverse plate (5) and the second supporting transverse plate (10) can move relatively along the length direction of the test strip (18) through the matching of the guide rail (8) and the groove (11).
7. The propellant clamping device of claim 1 further comprising a fixed mounting base for securing the propellant clamping device to a laboratory bench; the fixed mounting base comprises a supporting base (15) and a device clamping sleeve (19); the supporting base (15) is cylindrical and is arranged on the lower surface of the first supporting device or the second supporting device; the device clamping sleeve (19) is cylindrical and is fixed on the experiment table top; the axes of the supporting base (15) and the device clamping sleeve (19) are vertical to the experiment table surface; the propellant clamping device is fixed on the experiment table top by the matching of the device clamping sleeve (19) and the supporting base (15).
8. Propellant clamping device according to claim 7, characterized in that the support base (15) and the device clamping sleeve (19) are connected by 2 mutually perpendicular bolts, ensuring the stability of the support base (15) and the device clamping sleeve (19) in all directions;
the fixed mounting base further comprises a fixed mounting base bottom plate (20), the device clamping sleeve (19) is fixed at the center of the mounting base bottom plate (20), and the fixed mounting base bottom plate (20) is installed on the experiment table top through bolts.
9. The propellant clamping device as claimed in claim 3, characterized in that the first supporting transverse plate (5) is provided with a transverse plate screw (6), the second supporting transverse plate (10) is provided with a threaded hole (13) matched with the first supporting transverse plate along the length direction of the sample strip (18), and after the first supporting transverse plate (5) and the second supporting transverse plate (10) perform relative movement along the length direction of the sample strip (18), locking is realized through the cooperation of the transverse plate screw (6) and the threaded hole (13).
10. Propellant holding device according to claim 1, wherein the first or second support member is provided with graduation marks (12) along the length of the test specimen for registering the relative displacement of the first and second support member along the length of the test specimen (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120375118.8U CN214750274U (en) | 2021-02-09 | 2021-02-09 | Propellant clamping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120375118.8U CN214750274U (en) | 2021-02-09 | 2021-02-09 | Propellant clamping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214750274U true CN214750274U (en) | 2021-11-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120375118.8U Active CN214750274U (en) | 2021-02-09 | 2021-02-09 | Propellant clamping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214750274U (en) |
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2021
- 2021-02-09 CN CN202120375118.8U patent/CN214750274U/en active Active
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