CN205209869U - A shuangzi bullet electromagnetic drive device for hopkinson pressure bar - Google Patents
A shuangzi bullet electromagnetic drive device for hopkinson pressure bar Download PDFInfo
- Publication number
- CN205209869U CN205209869U CN201520937621.2U CN201520937621U CN205209869U CN 205209869 U CN205209869 U CN 205209869U CN 201520937621 U CN201520937621 U CN 201520937621U CN 205209869 U CN205209869 U CN 205209869U
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- Prior art keywords
- bullet
- guide rail
- boss
- shuangzi
- main guide
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Abstract
The utility model discloses a shuangzi bullet electromagnetic drive device for hopkinson pressure bar, including leading rail, boss's bullet, deputy guide way, vice bullet and buffer, deputy guide way and leading rail coupling, and the deputy guide way internal diameter is less than the internal diameter of leading rail, boss's bullet and leading rail coupling, vice bullet is connected with deputy guide way, buffer sets up in junction main, deputy guide way, and in the inception moment, boss's bullet is located the front end of leading rail, and offsets with vice bullet. The utility model discloses reduce the degree of difficulty and the complexity of conventional electromagnetic drive device drive non -electromagnetic material bullet.
Description
Technical field
The utility model relates to test material dynamic mechanical field, is specifically related to a kind of Shuangzi bullet electromagnetic actuator device for Hopkinson pressure bar.
Background technology
Split hopkinson press bar (SHPB) technology is a kind of experimental technique of test material dynamic mechanical, has been widely used in the Mechanics Performance Testing of construction material under high strain-rate from 1949 by Kolsky since being proposed.Bullet in Hopkinson pressure bar device is its important component part, and its effect clashes into incident bar with certain speed to load test specimen to produce an incident wave, and the device allowing bullet obtain speed is called drive unit.At present, drive unit in common Hopkinson pressure bar is mainly divided into gases at high pressure to load and electromagnetism loads two kinds, the speed that accurately cannot control bullet is by the weak point of drive of high-pressure gas bullet, ensure the repeatability of experiment, and although conventional electromagnetic drive unit accurately can control the speed of bullet, but require that bullet is ferromagnetic material, otherwise will at the outer winding around of bullet, this not only proposes requirements at the higher level to magnetic field intensity but also can produce interference to incident waveform, and the current test to many low-modulus material needs to use the lower nonferromagnetic material bullet of modulus and rod member.Conventional electromagnetic drive unit also will be introduced a complicated anti-reverse drawing design and slow down with the bullet preventing bullet electromagnetic force after in the middle part of track from oppositely causing.
Utility model content
In order to overcome the electromagnetic actuator device of existing Hopkinson pressure bar in the deficiency driving the complicacy of non-electromagnetic material bullet and need an anti-reverse drawing to design, the utility model proposes a kind of Shuangzi bullet electromagnetic actuator device for Hopkinson pressure bar.
The utility model adopts following technical scheme:
A kind of Shuangzi bullet electromagnetic actuator device for Hopkinson pressure bar, comprise main guide rail and boss's bullet, also comprise secondary guide rail, secondary bullet and snubber assembly, described secondary guide rail is connected with main guide rail, and secondary guide rail internal diameter is less than the internal diameter of main guide rail, described boss's bullet is connected with main guide rail, described secondary bullet is connected with secondary guide rail, and described snubber assembly is arranged on the junction of major and minor guide rail, at initial time, boss's sticking position in the front end of main guide rail, and offsets with secondary bullet.
Described boss's bullet is made up of ferromagnetic material, and described secondary bullet is made up of nonferromagnetic material.
Described major and minor bullet is connected with main guide rail and secondary guide rail respectively by rolling support.
Described rolling support comprises multiple roller.
Described major and minor guide rail is hollow cylinder.
When after the coil electricity on main guide rail, boss's bullet can be accelerated gradually and promote secondary bullet and move backward, when boss's bullet is in the middle part of main guide rail, because electromagnetic force oppositely can cause boss's bullet to slow down, and thus the secondary bullet that nonferromagnetic material is made can not continue to move with former speed by reverse electromagnetic force influence, boss's bullet starts to be separated with secondary bullet this moment, and the former speed of secondary bullet is launched.
The beneficial effects of the utility model:
The utility model reduces difficulty and the complicacy that conventional electromagnetic drive unit drives non-electromagnetic material bullet, the Shuangzi bullet electromagnetic actuator device for Hopkinson pressure bar that the utility model proposes can realize the loading to non-electromagnetic material bullet simply, and make use of the decelerating effect of reverse electromagnetic force to electromagnetic material bullet, avoid the introducing of anti-reverse drawing design.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but embodiment of the present utility model is not limited thereto.
Embodiment
The general structure of conventional electromagnetic drive unit only comprises one section of main guide rail and boss's bullet, if boss's bullet is ferromagnetic material, is accelerated to launch with electromagnetic force, drives with regard to needing to be wrapped with coil outside bullet if boss's bullet is nonferromagnetic material with electromagnetic force again.
As shown in Fig. 1 structure, comprise main guide rail 2 and boss's bullet 1, also comprise secondary guide rail 4, secondary bullet 3 and snubber assembly 5, described secondary guide rail 4 is connected with main guide rail 2, and secondary guide rail internal diameter is less than the internal diameter of main guide rail, described boss's bullet 1 is slidably connected with main guide rail 2, and described secondary bullet 3 is connected with secondary guide rail 4, and described snubber assembly 5 is arranged on the junction of major and minor guide rail, at initial time, boss's bullet 1 is positioned at the front end of main guide rail 2, and offset with secondary bullet 3, thus can be promoted to move by boss's bullet.
Described major and minor guide rail is right cylinder.
The present embodiment boss bullet, secondary bullet all adopt rolling support to be connected with main guide rail and secondary guide rail, and the way of contact between bullet and guide rail requires that friction force is very little, also can adopt other sliding supports or lubrication wet goods.
Described boss's bullet 1 is made up of ferromagnetic material, and described secondary bullet 3 is made up of nonferromagnetic material.
Rolling support comprises multiple roller 6, and boss's bullet is slidably connected particular by 4 rollers and main guide rail, and secondary bullet is connected with secondary slide particular by 8 rollers.
When after the coil electricity on main guide rail, boss's bullet can be accelerated gradually and promote secondary bullet and move backward.When boss's bullet is in the middle part of main guide rail, because electromagnetic force oppositely can cause boss's bullet to slow down, but not thus the secondary bullet that electromagnetic material is made can not continue to move with former speed by reverse electromagnetic force influence, and that is boss's bullet is separated from this moment with secondary bullet.Final boss plays retarded motion to main guide rail end and is buffered device or the obstruction of other reduction gear, and secondary bullet is launched with former speed.
Embodiment 1
In embodiment, main bullet diameters is 16mm, long 25mm, secondary bullet diameters is 10mm, long 90mm, and boss's bullet is placed in main guide rail front end at initial time, two bullets offset at initial time, after main guide rail energising, boss's bullet accelerates gradually to move backward and promotes secondary bullet and moves backward, this period two bullets regardless of from.When boss's bullet moves to after in the middle part of main guide rail, because electromagnetic force is reverse, boss's bullet can slow down, and thus secondary bullet owing to not continuing to move backward with former speed by electromagnetic force influence, and from then on two bullets depart from.Final boss's bullet is buffered device and stops, and secondary bullet is successfully launched.
Above-described embodiment is the utility model preferably embodiment; but embodiment of the present utility model is not limited by the examples; change, the modification done under other any does not deviate from Spirit Essence of the present utility model and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection domain of the present utility model.
Claims (5)
1. the Shuangzi bullet electromagnetic actuator device for Hopkinson pressure bar, comprise main guide rail and boss's bullet, it is characterized in that, also comprise secondary guide rail, secondary bullet and snubber assembly, described secondary guide rail is connected with main guide rail, and secondary guide rail internal diameter is less than the internal diameter of main guide rail, described boss's bullet is connected with main guide rail, and described secondary bullet is connected with secondary guide rail, described snubber assembly is arranged on the junction of major and minor guide rail, at initial time, boss's sticking position in the front end of main guide rail, and offsets with secondary bullet.
2. Shuangzi bullet electromagnetic actuator device according to claim 1, is characterized in that, described boss's bullet is made up of ferromagnetic material, and described secondary bullet is made up of nonferromagnetic material.
3. Shuangzi bullet electromagnetic actuator device according to claim 1, is characterized in that, described major and minor bullet is connected with main guide rail and secondary guide rail respectively by rolling support.
4. Shuangzi bullet electromagnetic actuator device according to claim 3, it is characterized in that, described rolling support comprises multiple roller.
5. Shuangzi bullet electromagnetic actuator device according to claim 1, is characterized in that, described major and minor guide rail is hollow cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520937621.2U CN205209869U (en) | 2015-11-20 | 2015-11-20 | A shuangzi bullet electromagnetic drive device for hopkinson pressure bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520937621.2U CN205209869U (en) | 2015-11-20 | 2015-11-20 | A shuangzi bullet electromagnetic drive device for hopkinson pressure bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205209869U true CN205209869U (en) | 2016-05-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520937621.2U Withdrawn - After Issue CN205209869U (en) | 2015-11-20 | 2015-11-20 | A shuangzi bullet electromagnetic drive device for hopkinson pressure bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205209869U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105319124A (en) * | 2015-11-20 | 2016-02-10 | 华南理工大学 | Double-cartridge electromagnetic drive device used for split Hopkinson pressure bar |
| CN107703009A (en) * | 2017-10-27 | 2018-02-16 | 河海大学 | A kind of magnetic induction for SHPB experiments is tested the speed and anti-incident bar recoiling device |
-
2015
- 2015-11-20 CN CN201520937621.2U patent/CN205209869U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105319124A (en) * | 2015-11-20 | 2016-02-10 | 华南理工大学 | Double-cartridge electromagnetic drive device used for split Hopkinson pressure bar |
| CN105319124B (en) * | 2015-11-20 | 2018-02-27 | 华南理工大学 | A kind of Shuangzi bullet electromagnetic actuator device for Hopkinson pressure bar |
| CN107703009A (en) * | 2017-10-27 | 2018-02-16 | 河海大学 | A kind of magnetic induction for SHPB experiments is tested the speed and anti-incident bar recoiling device |
| CN107703009B (en) * | 2017-10-27 | 2020-05-05 | 河海大学 | Magnetic induction speed measurement and anti-incident rod recoil device for SHPB test |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160504 Effective date of abandoning: 20180227 |