CN212459245U - Horizontal type impact hammer experimental device based on separated Hopkinson pressure bar - Google Patents
Horizontal type impact hammer experimental device based on separated Hopkinson pressure bar Download PDFInfo
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- CN212459245U CN212459245U CN202021751365.5U CN202021751365U CN212459245U CN 212459245 U CN212459245 U CN 212459245U CN 202021751365 U CN202021751365 U CN 202021751365U CN 212459245 U CN212459245 U CN 212459245U
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Abstract
The utility model discloses a horizontal impact hammer experimental apparatus based on disconnect-type hopkinson depression bar, include: the device comprises a separated Hopkinson pressure bar mounting seat assembly, a muzzle diameter converter, a hammer impact module, a slide rail and a target platform; the gun muzzle diameter converter and the target platform are sequentially and horizontally arranged on the split Hopkinson pressure bar mounting seat assembly, and the slide rail is detachably connected between the gun muzzle diameter converter and the target platform and used for guiding the impact hammer module; one end of the impact hammer module is arranged in the muzzle diameter converter, and the other end of the impact hammer module faces the target platform; a sample is arranged on the target platform; and a transmitting module in the split Hopkinson pressure bar mounting seat assembly is butted with a muzzle diameter converter and used for driving the impact hammer module to act, and the impact hammer module can apply a set impact load to the sample.
Description
Technical Field
The utility model relates to a material strikes dynamics technical field, concretely relates to horizontal impact hammer experimental apparatus based on disconnect-type hopkinson depression bar.
Background
The gravity drop hammer test is to carry out impact loading by falling of a heavy hammer and collision with a test piece, and is suitable for 10-1～102s-1And in the dynamic test in the medium-high strain rate range, the loading rate and the incident energy are adjusted by changing the weight and the height of the hammer. The loading range of the gravity drop hammer experimental device is limited by the vertical height of an experimental field, and the difficulty of realizing high-speed loading in an indoor laboratory is high; the gravity drop hammer is actively accelerated to complement the defect of the height of a laboratory, but under the combined action of active load and gravity, the drop hammer is easy to rebound after impacting a sample to generate secondary impact, and a device for preventing the secondary impact needs to be additionally arranged. The separated Hopkinson pressure bar device is also widely used in the dynamic mechanical test of materials, and can realize 100～103s-1Impact/explosion loading in a high strain rate range, intersection exists in the loading ranges of the two devices, and the single machine purchase cost is high. Therefore, on the basis of not changing the split Hopkinson pressure bar mounting seat component, a set of low-cost multi-purpose horizontal impact power experimental device which can meet the test requirements of the gravity drop hammer experimental device and can complement the defects of the gravity drop hammer experimental device is designed, and the problem to be solved urgently is solved.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a horizontal impact hammer experimental apparatus based on disconnect-type split Hopkinson pressure bar on the basis that does not change disconnect-type split Hopkinson pressure bar mount pad subassembly to disconnect-type split Hopkinson pressure bar mount pad subassembly adopts the modularized design as the platform, and easy dismounting, with low costs can enough satisfy the experimental demand of gravity drop hammer experimental apparatus, can complement the defect of gravity drop hammer experimental apparatus again.
The technical scheme of the utility model is that: the utility model provides a horizontal hammer impact experimental apparatus based on disconnect-type hopkinson depression bar, includes: the device comprises a separated Hopkinson pressure bar mounting seat assembly, a muzzle diameter converter, a hammer impact module, a slide rail and a target platform;
the gun muzzle diameter converter and the target platform are sequentially and horizontally arranged on the split Hopkinson pressure bar mounting seat assembly, and the slide rail is detachably connected between the gun muzzle diameter converter and the target platform and used for guiding the impact hammer module; one end of the impact hammer module is arranged in the muzzle diameter converter, and the other end of the impact hammer module faces the target platform; a sample is arranged on the target platform; and a transmitting module in the split Hopkinson pressure bar mounting seat assembly is butted with a muzzle diameter converter and used for driving the impact hammer module to act, and the impact hammer module can apply a set impact load to the sample.
Preferably, the muzzle diameter converter comprises: the diameter-variable gun barrel comprises a diameter-variable gun barrel, a diameter-variable gun barrel clamp and a muzzle diameter converter support;
the gun muzzle diameter converter support is detachably connected to a split Hopkinson pressure bar mounting seat assembly at the corresponding end of the transmitting module, the reducing gun barrel clamp is mounted on the gun muzzle diameter converter support through a bolt, the reducing gun barrel is of a horn-shaped structure, the periphery of the reducing gun barrel is fixed in the reducing gun barrel clamp, and the large end of the reducing gun barrel is in threaded butt joint with the gun muzzle end of the transmitting module; in an initial state, one end of the impact hammer module is arranged in the small end of the reducing gun barrel.
Preferably, the hammer punch module includes: a hammerhead and a limiting section; the limiting section is of a circular tube structure, the hammer head is in threaded connection with one end of the limiting section, the other end of the limiting section is arranged in the muzzle diameter converter, two lug plates are arranged on the periphery of the limiting section along the radial direction, and the two lug plates are respectively in sliding fit with the sliding rails.
Preferably, the hammer punch module further comprises: the weighting section is in threaded connection with the limiting section and is located at two opposite ends of the limiting section together with the hammer head, and the incident energy of the impact hammer module can be adjusted by adjusting the mass of the weighting section.
Preferably, the hammer punch module further comprises: and the cavity section is in threaded connection between the limiting section and the weighting section, is internally provided with a sensor with a set function and is used for acquiring flight data of the impact hammer module.
Preferably, the end of the hammer head facing the sample adopts a conical or hemispherical or pyramid structure.
Preferably, the target table comprises: the device comprises a support rail, a T-shaped through groove, an energy-absorbing sand bin, a target platform rear support seat and a bearing platform;
the rear supporting seat of the target platform is fixed on a separated Hopkinson pressure bar mounting seat component at the opposite end of the launching module, the end face of the rear supporting seat opposite to the impact hammer module is detachably connected with the energy-absorbing sand bin through a rib plate arranged on the rear supporting seat, more than three T-shaped through grooves which are parallel to each other are prefabricated on the end face of the energy-absorbing sand bin opposite to the impact hammer module, the bearing platform and the two supporting rails are respectively inserted into the corresponding T-shaped through grooves on the energy-absorbing sand bin through T-shaped lock hooks arranged on the bearing platform and the two supporting rails, and the bearing platform is positioned below the two supporting rails; the sample is placed on the bearing table and supported on the energy-absorbing sand bin through the support rail, and the energy-absorbing sand bin is used for absorbing redundant impact energy;
wherein, support the rail and be triangular prism shape structure, it is line contact with the sample, and two support rails are located the position department of setting for at both ends about the sample respectively, when emission module drive impact hammer module impact sample, can carry out three point bending test.
Preferably, the center of the sample in the height direction can be coincided with the center of the flight track of the impact hammer module by adjusting the installation position of the bearing table in the height direction of the energy-absorbing sand bin.
Preferably, the target table and the test specimen are isolated from the outside by a plexiglas cover.
Preferably, the material of the hammer block is made of hard alloy.
Has the advantages that:
1. the utility model discloses a hammer impact experimental apparatus, on the basis that does not change disconnect-type split Hopkinson pressure bar mount pad subassembly, use disconnect-type split Hopkinson pressure bar mount pad subassembly as the platform, adopt the modularized design, little to the laboratory vertical space requirement, the device simple structure, the flexible and convenient, safe in utilization, with low costs of operation equipment, can enough satisfy the experimental demand of gravity drop hammer experimental apparatus, can complement the defect of gravity drop hammer experimental apparatus again; meanwhile, a module except for the split Hopkinson pressure bar mounting seat assembly in the hammer punch experimental device is removed, and the corresponding rod piece can still be mounted to serve as the split Hopkinson pressure bar.
2. The utility model discloses the impact hammer subassembly of the different diameters of effective centre gripping can be realized to well gun muzzle diameter converter's concrete setting.
3. The utility model discloses well impact hammer subassembly specific setting can enough be convenient for be connected with muzzle diameter converter, can be convenient for again accurately strike the sample under the drive of emission module.
4. The utility model discloses aggravate the setting of section in the impact hammer subassembly, be favorable to adjusting the incident energy size of impact hammer subassembly.
5. The utility model discloses the setting of cavity section in the impact hammer subassembly is favorable to carrying on the sensor of setting for the function, is convenient for gather the flight data of impact hammer subassembly.
6. The utility model discloses well target table's concrete setting can enough provide test table face for the sample, can absorb unnecessary impact energy again.
7. The utility model discloses be covered with the glass cover outside well target platform and the sample, can enough prevent the piece that the test sample produced in the test process from flying to penetrate, can be convenient for again observe the destruction process of sample.
Drawings
FIG. 1 is a schematic structural view of the horizontal impact hammer testing device of the present invention;
fig. 2 is a schematic structural diagram of a central muzzle diameter converter according to the present invention;
fig. 3 is a schematic structural diagram of a middle hammer punch module according to the present invention;
fig. 4 is a schematic structural view of the middle target table of the present invention.
The device comprises a launching module 1, a muzzle diameter converter 2, a hammer impact module 3, a target platform 4, a reducing barrel 21, a slide rail bracket 22, a reducing barrel clamp 23, a muzzle diameter converter support 24, a hammer head 31, a limiting section 32, a cavity section 33, a weighting section 34, a slide rail 35, a sample 41, a support rail 42, a through groove 43-T, an energy-absorbing sand bin 44, a support seat behind the target platform 45, a bearing platform 46 and a lock catch 47.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings by way of examples.
This embodiment provides a horizontal impact hammer experimental apparatus based on disconnect-type hopkinson depression bar to disconnect-type hopkinson depression bar mount pad subassembly adopts the modularized design as the platform, and easy dismounting, with low costs can enough satisfy the experimental demand of gravity drop hammer experimental apparatus and disconnect-type hopkinson depression bar, can complement the defect of gravity drop hammer experimental apparatus again.
As shown in fig. 1, the horizontal hammer punch experimental apparatus includes: the split Hopkinson pressure bar mounting seat assembly comprises a split Hopkinson pressure bar mounting seat assembly, and a muzzle diameter converter 2, a hammer impact module 3, a slide rail 35 and a target platform 4 which are horizontally mounted on the split Hopkinson pressure bar mounting seat assembly; wherein, disconnect-type hopkinson depression bar mount pad subassembly includes: the device comprises a test platform and a transmitting module 1 fixed at one end of the test platform through a bracket; as shown in fig. 2, the muzzle diameter converter 2 includes: the device comprises a reducing gun barrel 21, a slide rail bracket 22, a reducing gun barrel clamp 23 and a muzzle diameter converter support 24; as shown in fig. 3, the hammer punch module 3 includes: a hammerhead 31, a limiting section 32, a cavity section 33 and a weighting section 34; as shown in fig. 4, the target table 4 includes: a support rail 42, a T-shaped through groove 43, an energy-absorbing sand bin 44, a target platform rear support seat 45 and a bearing platform 46;
the connection relationship of the horizontal type impact hammer experimental device is as follows: the muzzle diameter converter support 24 is detachably connected to a test platform at the corresponding end of the transmitting module 1, the reducing gun barrel clamp 23 is installed on the muzzle diameter converter support 24 through bolts, the reducing gun barrel 21 is of a horn-shaped structure, the periphery of the reducing gun barrel is fixed in the reducing gun barrel clamp 23, and the large end of the reducing gun barrel is in threaded butt joint with the muzzle end of the transmitting module 1; in an initial state, one end of the hammer module 3 is arranged in the small end of the reducing gun barrel 21 and can impact the sample 41 under the driving of the transmitting module 1, and the shape of the reducing gun barrel 21 is favorable for ensuring that the hammer modules 3 with various diameters can be replaced on the premise of not replacing the gun barrel, so that instant acceleration can be provided for the hammer modules 3 with various diameters;
one end of the slide rail 35 is fixedly connected with the reducing gun barrel clamp 23 through the slide rail bracket 22, and the other end of the slide rail is detachably connected with the target platform 4 arranged at the other end of the test platform and can be locked on the target platform 4 through the lock catch 47;
the target platform rear supporting seat 45 is fixed at the other end of the test platform, the end face of the target platform rear supporting seat opposite to the impact hammer module 3 is detachably connected with the energy-absorbing sand bin 44 through a rib plate arranged on the target platform rear supporting seat, more than three T-shaped through grooves 43 which are parallel to each other are prefabricated on the end face of the energy-absorbing sand bin 44 opposite to the impact hammer module 3, the bearing platform 46 and the two supporting rails 42 are respectively inserted and combined with the corresponding T-shaped through grooves 43 on the energy-absorbing sand bin 44 through T-shaped lock hooks arranged on the bearing platform 46 and the two supporting rails 42, so that the bearing platform 46 is matched with the energy-absorbing sand bin 44 in an installing; the sample 41 is placed on a bearing table 46 and supported on an energy-absorbing sand bin 44 through a support rail 42, and fine sand is filled in the energy-absorbing sand bin 44 and is used for absorbing redundant impact energy; wherein, the supporting rails 42 are triangular prism-shaped structures, which are in line contact with the sample 41, and the two supporting rails 42 are respectively located at one sixth position of the upper and lower ends of the sample 41; by adjusting the installation position of the receiving platform 46 along the height direction of the energy-absorbing sand silo 44, the center (height direction) of the sample 41 can be coincided with the center of the flight track of the hammer impact module 3, and when the emission module 1 drives the hammer impact module 3 to impact the sample 41, a three-point bending test can be carried out;
the slide rail 35 comprises two steel pipes which are parallel to each other, the limiting section 32 is of a circular pipe structure, one end of the limiting section is provided with an internal thread, the other end of the limiting section is provided with an external thread, the outer periphery of the limiting section is radially provided with two lug plates, the limiting section 32 is respectively in sliding fit with the two steel pipes in the slide rail 35 through the two lug plates on the periphery of the limiting section, and the specific arrangement of the slide rail 35 is used for ensuring the flight track of the hammer module 3 arranged on the slide rail and enabling the hammer module 3 to accurately impact the set position of the; the hammer head 31 is in threaded connection with one end of the limiting section 32 provided with an internal thread through an external thread arranged at one end; the other end of the limiting section 32 is in threaded connection with a weighting section 34 for controlling the impact incident energy of the hammer module 3;
furthermore, the material of the impact hammer module 3 is hard alloy;
further, a cavity section 33 is connected between the limiting section 32 and the weighting section 34 in a threaded manner, and a sensor with a corresponding function can be carried in the cavity section as required and is used for collecting flight data of the impact hammer module 3;
furthermore, the material of the muzzle diameter converter 2 is made of high-strength, easy-to-process and low-cost material;
further, the end of the hammer head 31 facing the sample 41 may adopt a structure with various shapes such as a cone, a hemisphere or a pyramid;
further, the loading rate and the incident energy of the hammer module 3 in the test process can be realized by adjusting the air pressure of the air chamber in the emission module 1 and the mass of the hammer module 3, and the mass of the hammer module 3 can be controlled by adjusting the mass of the weighting section 34;
furthermore, the target table 4 and the sample 41 are isolated from the outside through an organic glass cover, so that fragments generated by the sample 41 in the test process can be prevented from flying, and the damage process of the sample 41 can be conveniently observed;
further, a distance is set between the muzzle diameter converter 2 and the target platform 4 at intervals;
the working principle of the horizontal impact hammer experimental device is as follows: the mass of the impact hammer module 3 is kept unchanged, the impact rate of the impact hammer module 3 is controlled by adjusting the air pressure of the air chamber of the transmitting module 1, and single impact and constant/unequal velocity cyclic impact can be carried out; the air pressure of an air chamber of the transmitting module 1 is kept constant, and the impact incident energy of the impact hammer module 3 can be controlled by changing the mass of the impact hammer module 3; the air pressure of the air chamber of the transmitting module 1 and the mass of the impact hammer module 3 can be adjusted simultaneously to realize the control of impact rate/energy.
In summary, the above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a horizontal hammer impact experimental apparatus based on disconnect-type hopkinson depression bar which characterized in that includes: the device comprises a separated Hopkinson pressure bar mounting seat assembly, a muzzle diameter converter (2), a hammer impact module (3), a slide rail (35) and a target platform (4);
the muzzle diameter converter (2) and the target platform (4) are sequentially and horizontally arranged on the split Hopkinson pressure bar mounting seat assembly, and the sliding rail (35) is detachably connected between the split Hopkinson pressure bar mounting seat assembly and is used for guiding the impact hammer module (3); wherein, one end of the impact hammer module (3) is arranged in the muzzle diameter converter (2), and the other end faces the target platform (4); a sample (41) is arranged on the target platform (4); a transmitting module (1) in the split Hopkinson pressure bar mounting seat assembly is in butt joint with a muzzle diameter converter (2) and is used for driving a hammer impact module (3) to act, and the hammer impact module (3) can apply a set impact load to a sample (41).
2. The split hopkinson ram-based horizontal hammer test device of claim 1, wherein the muzzle diameter converter (2) comprises: the device comprises a reducing gun barrel (21), a reducing gun barrel clamp (23) and a gun muzzle diameter converter support (24);
the muzzle diameter converter support (24) is detachably connected to a split Hopkinson pressure bar mounting seat assembly at the corresponding end of the transmitting module (1), the reducing gun barrel clamp (23) is mounted on the muzzle diameter converter support (24) through a bolt, the reducing gun barrel (21) is of a horn-shaped structure, the periphery of the reducing gun barrel clamp is fixed in the reducing gun barrel clamp (23), and the large end of the reducing gun barrel is in threaded butt joint with the muzzle end of the transmitting module (1); in an initial state, one end of the impact hammer module (3) is arranged in the small end of the reducing gun barrel (21).
3. The split hopkinson ram-based horizontal hammer press experimental apparatus of claim 1, wherein the hammer module (3) comprises: a hammer head (31) and a limiting section (32); spacing section (32) are the pipe structure, and tup (31) and the one end threaded connection of spacing section (32), the other end setting of spacing section (32) is in muzzle diameter converter (2), spacing section (32) periphery is along radially being equipped with two otic placodes, two otic placodes respectively with slide rail (35) sliding fit.
4. The split hopkinson ram-based horizontal hammer press experimental apparatus of claim 3, wherein the hammer module (3) further comprises: the weight increasing section (34) is in threaded connection with the limiting section (32), the weight increasing section (34) and the hammer head (31) are located at two opposite ends of the limiting section (32), and the incident energy of the impact hammer module (3) can be adjusted by adjusting the mass of the weight increasing section (34).
5. The split hopkinson ram-based horizontal hammer press experimental apparatus of claim 4, wherein the hammer module (3) further comprises: the cavity section (33) is in threaded connection between the limiting section (32) and the weighting section (34), and a sensor with a set function is mounted in the cavity section (33) and used for collecting flight data of the hammer impact module (3).
6. The split Hopkinson pressure bar-based horizontal impact hammer test device according to claim 3, wherein the end of the hammer head (31) facing the test piece (41) is in a conical or hemispherical or pyramidal structure.
7. The split hopkinson ram-based horizontal hammer test apparatus of claim 1, wherein the target table (4) comprises: a support rail (42), a T-shaped through groove (43), an energy-absorbing sand bin (44), a target platform rear support seat (45) and a bearing platform (46);
the target platform rear supporting seat (45) is fixed on a separated Hopkinson pressure bar mounting seat assembly at the opposite end of the launching module (1), the end face of the target platform rear supporting seat opposite to the impact hammer module (3) is detachably connected with an energy-absorbing sand bin (44) through a rib plate mounted on the impact hammer module, more than three T-shaped through grooves (43) which are parallel to each other are prefabricated on the end face of the energy-absorbing sand bin (44) opposite to the impact hammer module (3), the bearing platform (46) and the two supporting rails (42) are respectively inserted into the corresponding T-shaped through grooves (43) on the energy-absorbing sand bin (44) through T-shaped lock hooks arranged on the bearing platform (46), and the bearing platform (46) is positioned below the two supporting rails (42); the test sample (41) is placed on the bearing table (46) and supported on the energy-absorbing sand bin (44) through the support rail (42), and the energy-absorbing sand bin (44) is used for absorbing redundant impact energy;
the supporting rails (42) are of triangular prism structures and are in line contact with the sample (41), the two supporting rails (42) are respectively located at the set positions of the upper end and the lower end of the sample (41), and when the emission module (1) drives the hammer module (3) to impact the sample (41), a three-point bending test can be performed.
8. The horizontal type impact hammer test device based on the split Hopkinson pressure bar according to claim 7, wherein the center of the sample (41) in the height direction can be coincided with the flying track center of the impact hammer module (3) by adjusting the installation position of the receiving platform (46) in the height direction of the energy-absorbing sand bin (44).
9. The split hopkinson pressure bar-based horizontal impact hammer test device according to claim 1, wherein the target table (4) and the test specimen (41) are isolated from the outside by a plexiglas cover.
10. The split Hopkinson pressure bar-based horizontal hammer punch experiment device according to claim 1, wherein the hammer punch module (3) is made of hard alloy.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021751365.5U CN212459245U (en) | 2020-08-20 | 2020-08-20 | Horizontal type impact hammer experimental device based on separated Hopkinson pressure bar |
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| CN202021751365.5U CN212459245U (en) | 2020-08-20 | 2020-08-20 | Horizontal type impact hammer experimental device based on separated Hopkinson pressure bar |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113049414A (en) * | 2021-03-09 | 2021-06-29 | 中车青岛四方机车车辆股份有限公司 | High-speed offset impact performance testing device and method for train energy absorption test piece |
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2020
- 2020-08-20 CN CN202021751365.5U patent/CN212459245U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113049414A (en) * | 2021-03-09 | 2021-06-29 | 中车青岛四方机车车辆股份有限公司 | High-speed offset impact performance testing device and method for train energy absorption test piece |
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