CN210293876U - Sample electromagnetic induction heating/supporting device suitable for Hopkinson bar - Google Patents
Sample electromagnetic induction heating/supporting device suitable for Hopkinson bar Download PDFInfo
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- CN210293876U CN210293876U CN201921288157.3U CN201921288157U CN210293876U CN 210293876 U CN210293876 U CN 210293876U CN 201921288157 U CN201921288157 U CN 201921288157U CN 210293876 U CN210293876 U CN 210293876U
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Abstract
The utility model discloses a sample electromagnetic induction heating strutting arrangement suitable for hopkinson pole, include: a support sleeve including three positioning holes; the positioning sleeve comprises two semicircular sleeves, and three positioning rods and screw holes which are completely matched with the positioning holes are formed in the positioning sleeves; an electromagnetic induction heating coil fixing and heat shielding device, on which a fixing groove for passing and fixing the electromagnetic induction heating coil is arranged; the base, it includes supporting seat, adjusting bolt and lift post seal assembly. The utility model discloses have the support integrated configuration that improves the device flexibility, reduce the radiating double-deck thermal-insulated and liftable formula base of device, have good heating efficiency.
Description
Technical Field
The utility model discloses a belong to material high temperature impact dynamics field, specifically be a sample electromagnetic induction heating strutting arrangement suitable for hopkinson pole.
Background
Hopkinson bar experiments are commonly used for testing constitutive properties of various materials, such as high strain rate strength, fracture characteristics, stress-strain relationship and the like, and according to actual conditions, dynamic mechanical properties of the same material at different temperatures need to be researched so as to meet theoretical requirements of theoretical analysis and numerical simulation under conditions of high temperature, explosion, impact and the like.
In the prior art, a sample is mostly directly sandwiched between an incident rod and a transmission rod, and then the temperature of the sample is raised by using a heating box. However, such devices have poor stability, no specific sample supporting device is arranged, the alignment of the sample and the axis of the transmission rod cannot be well ensured, and the sample may be displaced during impact, which directly affects the accuracy of the test result. In addition, the heating box adopts a traditional heating mode, namely the heating box is heated by using resistance wire heating and the like, and the sample is heated from outside to inside through heat conduction, so that an obvious temperature gradient field is formed from the center to the edge of the sample, the accurate time for adding the whole sample to the same temperature is difficult to determine, and the time is consumed and the accuracy of the temperature of the sample is difficult to ensure. Meanwhile, the process of designing and manufacturing the heating box is complex, the economic cost is high, and the maximum temperature allowed by the internal resistance wire material and the supporting material needs to be considered, so that the heating temperature of the sample is greatly limited.
SUMMERY OF THE UTILITY MODEL
An object of the present invention is to solve at least the above problems and/or disadvantages and to provide at least the advantages which will be described later.
To achieve these objects and other advantages in accordance with the purpose of the invention, a sample electromagnetic induction heating/supporting device suitable for a hopkinson bar is provided, which includes:
the supporting sleeve is used for placing a sample, and three positioning holes used for ensuring axial symmetry are uniformly arranged on the supporting sleeve;
the positioning sleeve comprises two semicircular sleeves with connected ends; three positioning rods matched and connected with the three positioning holes are uniformly distributed on the positioning sleeve, the end parts of the two semicircular sleeves are connected through bolts, and the positioning sleeve is sleeved on a transmission rod of the Hopkinson bar experimental device;
the electromagnetic induction heating coil fixing and heat shielding device is coaxial with and opposite to the supporting sleeve for placing the sample; the electromagnetic induction heating coil and heat shielding device includes:
a shielding sleeve, the edge of which is provided with an electromagnetic induction heating coil fixing groove;
the electromagnetic induction heating coil is positioned in the shielding sleeve, the end part of the electromagnetic induction heating coil is fixed in the heating ring fixing groove, and the supporting sleeve is positioned in the electromagnetic induction heating coil;
a liftable base located at the bottom of the electromagnetic induction heating coil fixing and heat shielding device.
Preferably, the support sleeve for placing the sample is matched with the inner diameter of the sample.
Preferably, wherein the liftable base comprises:
the shielding sleeve is positioned on the supporting seat;
the lifting column is connected with the bottom of the supporting seat;
the movable base is provided with a lifting column accommodating hole; the movable base is provided with a lifting column screw hole communicated with the lifting column accommodating hole; and an adjusting bolt is connected in the screw hole of the lifting column.
Preferably, wherein the support sleeve is a corundum ceramic support sleeve.
Preferably, wherein the shielding sleeve is a polytetrafluoroethylene shielding sleeve.
Preferably, the positioning sleeve is a polytetrafluoroethylene positioning sleeve, and the positioning rod on the positioning sleeve is a polytetrafluoroethylene positioning rod.
Preferably, the liftable base is a stainless steel liftable base.
The utility model discloses at least, include following beneficial effect:
(1) the utility model discloses to current problem, carried out the institutional advancement and the optimization of device, under the prerequisite of guaranteeing accurate support, can reduce the structure complexity of device, hoisting device's flexibility and suitability to reduce the device cost.
(2) The utility model discloses an electromagnetic induction heating mode sets up, can directly heat up the metal sample, can not make fixed stay device high temperature, breaks through the restriction that supporting material heaied up to the sample. Meanwhile, the required heating efficiency can be obtained by adjusting the coil power and the coil position, and the temperature gradient difference of the sample is extremely small.
(3) The ceramic cylinder-polytetrafluoroethylene double-layer semi-closed heat insulation system of the utility model can prevent the heat from being dissipated too much, and ensure the heating efficiency. Meanwhile, the polytetrafluoroethylene cylinder has the function of supporting and fixing the electromagnetic induction heating coil.
(4) The utility model discloses a liftable base setting, the polytetrafluoroethylene section of thick bamboo position of adjustable direct support coil to control electromagnetic induction heating coil position. After the samples of different types and different positions are calculated, the good heating efficiency can be obtained by changing the position and the power of the coil.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Description of the drawings:
fig. 1 is a schematic structural diagram of a sample electromagnetic induction heating/supporting device for a hopkinson bar provided by the present invention;
fig. 2 is a schematic structural view of the supporting and positioning device provided by the present invention;
FIG. 3 is a schematic structural view of an electromagnetic induction heating coil fixing and heat shielding device according to the present invention;
fig. 4 is the structure schematic diagram of the liftable base provided by the utility model.
The specific implementation mode is as follows:
the present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
As shown in fig. 1-4: the utility model discloses a sample electromagnetic induction heating/strutting arrangement for hopkinson pole, include:
the supporting sleeve 1 is used for placing a sample, and three positioning holes 11 used for ensuring axial symmetry are uniformly arranged on the supporting sleeve 1;
the positioning sleeve 2 comprises a semicircular sleeve I22 and a semicircular sleeve II 23 which are connected at the end parts; three positioning rods 21 matched and connected with the three positioning holes 11 are uniformly distributed on the positioning sleeve 2, the end parts of the semicircular sleeve I22 and the semicircular sleeve II 23 are connected through bolts 24, and the positioning sleeve is sleeved on a transmission rod of the Hopkinson bar experiment device;
an electromagnetic induction heating coil fixing and heat shielding device 3 which is provided coaxially and separately from the support sleeve 1 for placing the sample; the electromagnetic induction heating coil fixing and heat shielding device 3 includes:
a shield sleeve 31 having an electromagnetic induction heating coil fixing groove 32 formed at an edge thereof;
and an electromagnetic induction heating coil 33 which is positioned in the shielding sleeve 31, and an end portion of the electromagnetic induction heating coil is fixed in the heating ring fixing groove 32, and the support sleeve 1 is positioned in the electromagnetic induction heating coil 33.
A liftable base 4 located at the bottom of the electromagnetic induction heating coil fixing and heat shielding device 3.
By adopting the technical scheme, three positioning holes 11 with symmetrical axes are formed in the supporting sleeve 1, the supporting sleeve 1 is positioned through the positioning rod 21 fixed on the positioning sleeve 2 on the transmission rod of the Hopkinson bar experimental device, and a sample is placed in the supporting sleeve 1 matched with the inner diameter of the sample, so that the sample can be ensured to accurately position the transmission rod in the axial direction at high temperature; the sample fixing device composed of the electromagnetic induction heating coil fixing and heat shielding device 3 and the positioning sleeve 2 of the supporting sleeve 1 is oppositely and separately arranged; the electromagnetic induction coil 33 passes through the electromagnetic induction heating coil fixing groove 32, so that the electromagnetic induction heating coil 33 is fixed outside the supporting sleeve 1 with the sample, the sample is directly heated, and the sample is uniformly heated while the sample heating efficiency is ensured; a liftable base 4 is arranged at the lower end of the electromagnetic induction heating coil fixing and heat shielding device 3, and the liftable base 4 can adjust the height of the electromagnetic heating coil fixing and heat shielding device 3; in this way, the fixing of the electromagnetic heating coil and the mounting and dismounting of the heat shielding device 3 are facilitated, and the change of the sample heating position is facilitated.
In the above technical solution, the supporting sleeve 1 for placing the sample is fitted with the inner diameter of the sample, and the positioning rod 21 on the positioning sleeve 2 is connected with the positioning hole 11 on the supporting sleeve 1 in a matching manner (the positioning rod 21 of the positioning sleeve 2 is fitted with the inner diameter of the positioning hole 11 of the supporting sleeve 1), so that the sample and the transmission rod can be accurately aligned in the axial direction, and the sample can be accurately positioned and cannot shake in the hopkinson rod experiment process.
In the above technical solution, the liftable base 4 includes:
a support base 41, wherein the shielding sleeve 31 is positioned on the support base 41;
a lifting column 42 connected to the bottom of the support base 41;
a movable base 44 having a lifting column receiving hole formed therein; the movable base 44 is provided with a lifting column screw hole communicated with the lifting column accommodating hole; and an adjusting bolt 43 is connected in the screw hole of the lifting column. The lifting base 4 can control the lifting of the supporting seat 41 by moving the lifting column 42 through the adjusting bolt 43; the supporting seat 41 is controlled to ascend and descend by changing the horizontal position of the movable base 44, the electromagnetic induction heating coil 33 can be fixed at a proper position to heat the sample, the heating operation is simple and convenient, and the sample is heated uniformly.
In the above technical scheme, the supporting sleeve 1 of the sample is a corundum ceramic supporting sleeve, the material of the supporting sleeve 1 has excellent heat insulation performance, the corundum ceramic can bear high temperature of more than 1500 ℃ and is not cracked, and the supporting sleeve 1 cannot be heated by the electromagnetic induction coil 33, so that the supporting sleeve 1 can be ensured to bear higher sample temperature, and the limitation of the material on the highest temperature of the sample which can be heated is broken through.
In above-mentioned technical scheme, location sleeve 2 and locating lever 21 are polytetrafluoroethylene location sleeve and polytetrafluoroethylene locating lever, because the corundum ceramic material that support sleeve 1 adopted, thermal-insulated respond well, cup joint the polytetrafluoroethylene locating lever in last locating hole 11 and can not produce obvious thermal expansion phenomenon, can not exert an influence to the location, and polytetrafluoroethylene is more economical as the material.
In the above technical solution, the shielding sleeve 31 is a teflon shielding sleeve, and teflon has the characteristics of high temperature resistance and low thermal conductivity, and not only has the function of fixing the electromagnetic heating coil 33, but also can be matched with the supporting sleeve 1 to achieve the secondary heat insulation effect; adopt the heating of high frequency electromagnetic induction coil, can heat the sample to higher temperature, heating efficiency is high, the heating uniformity is good to change the heating position easily, the flexibility is high, and it is more convenient to install and dismantle.
In the technical scheme, the liftable base 4 is a stainless steel liftable base, and the liftable base 4 is simple and practical in structure; the stainless steel adopted has strong toughness, is not easy to lose and has low manufacturing cost, thereby reducing the economic cost of the whole device.
While the embodiments of the invention have been described above, it is not intended to be limited to the details shown, or described, but rather to cover all modifications, which would come within the scope of the appended claims, and all changes which come within the meaning and range of equivalency of the art are therefore intended to be embraced therein.
Claims (7)
1. A sample electromagnetic induction heating/support apparatus for a hopkinson bar, comprising:
the supporting sleeve is used for placing a sample, and three positioning holes used for ensuring axial symmetry are uniformly arranged on the supporting sleeve;
the positioning sleeve comprises two semicircular sleeves with connected ends; three positioning rods matched and connected with the three positioning holes are uniformly distributed on the positioning sleeve, the end parts of the two semicircular sleeves are connected through bolts, and the positioning sleeve is sleeved on a transmission rod of the Hopkinson bar experimental device;
the electromagnetic induction heating coil fixing and heat shielding device is coaxial with and opposite to the supporting sleeve for placing the sample; the electromagnetic induction heating coil and heat shielding device includes:
a shielding sleeve, the edge of which is provided with an electromagnetic induction heating coil fixing groove;
the electromagnetic induction heating coil is positioned in the shielding sleeve, the end part of the electromagnetic induction heating coil is fixed in the heating ring fixing groove, and the supporting sleeve is positioned in the electromagnetic induction heating coil;
a liftable base located at the bottom of the electromagnetic induction heating coil fixing and heat shielding device.
2. The sample electromagnetic induction heating/support apparatus for a hopkinson bar of claim 1, wherein the support sleeve for placing the sample is fitted to the sample inner diameter.
3. The sample electromagnetic induction heating/supporting device for a hopkinson bar of claim 1, wherein the liftable base comprises:
the shielding sleeve is positioned on the supporting seat;
the lifting column is connected with the bottom of the supporting seat;
the movable base is provided with a lifting column accommodating hole; the movable base is provided with a lifting column screw hole communicated with the lifting column accommodating hole; and an adjusting bolt is connected in the screw hole of the lifting column.
4. The sample electromagnetic induction heating/support apparatus for a hopkinson bar of claim 1, wherein the support sleeve is a corundum ceramic support sleeve.
5. The sample electromagnetic induction heating/support apparatus for a hopkinson bar of claim 1, wherein the shielding sleeve is a polytetrafluoroethylene shielding sleeve.
6. The sample electromagnetic induction heating/supporting device for the hopkinson bar as recited in claim 1, wherein the positioning sleeve is a teflon positioning sleeve, and a positioning rod on the positioning sleeve is a teflon positioning rod.
7. The sample electromagnetic induction heating/supporting device for the hopkinson bar as recited in claim 1, wherein the liftable base is a stainless steel liftable base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921288157.3U CN210293876U (en) | 2019-08-09 | 2019-08-09 | Sample electromagnetic induction heating/supporting device suitable for Hopkinson bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921288157.3U CN210293876U (en) | 2019-08-09 | 2019-08-09 | Sample electromagnetic induction heating/supporting device suitable for Hopkinson bar |
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| Publication Number | Publication Date |
|---|---|
| CN210293876U true CN210293876U (en) | 2020-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921288157.3U Active CN210293876U (en) | 2019-08-09 | 2019-08-09 | Sample electromagnetic induction heating/supporting device suitable for Hopkinson bar |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11821874B1 (en) | 2022-06-16 | 2023-11-21 | Shandong University Of Science And Technology | Dynamic load shearing test device and method based on hopkinson bar system |
| WO2023240722A1 (en) * | 2022-06-16 | 2023-12-21 | 山东科技大学 | Dynamic shear test device and method based on hopkinson bar system |
-
2019
- 2019-08-09 CN CN201921288157.3U patent/CN210293876U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11821874B1 (en) | 2022-06-16 | 2023-11-21 | Shandong University Of Science And Technology | Dynamic load shearing test device and method based on hopkinson bar system |
| WO2023240722A1 (en) * | 2022-06-16 | 2023-12-21 | 山东科技大学 | Dynamic shear test device and method based on hopkinson bar system |
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