CN114018762B - Internal friction force detection device for explosive column - Google Patents
Internal friction force detection device for explosive column Download PDFInfo
- Publication number
- CN114018762B CN114018762B CN202111306036.9A CN202111306036A CN114018762B CN 114018762 B CN114018762 B CN 114018762B CN 202111306036 A CN202111306036 A CN 202111306036A CN 114018762 B CN114018762 B CN 114018762B
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- CN
- China
- Prior art keywords
- grain
- mounting plate
- sleeve
- supporting plate
- internal friction
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- 239000002360 explosive Substances 0.000 title claims abstract description 31
- 238000001514 detection method Methods 0.000 title claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000003814 drug Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000001125 extrusion Methods 0.000 abstract description 7
- 230000000977 initiatory effect Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000000518 rheometry Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B35/00—Testing or checking of ammunition
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention belongs to the field of initiating explosive devices, and particularly relates to an internal friction force detection device for a grain. Comprising the following steps: the device comprises a lower supporting plate, an upper supporting plate, an explosion-proof motor, a guide shaft, a guide mounting plate, a linear electric cylinder, a linear bearing, a pressure sensor, a punch, a floating joint mounting plate, a push rod, a sleeve inner film, a sleeve outer die, a grain to be tested and a water bath heating device. The invention can effectively complete the test of the internal friction force of the grain and realize the test of the standard grainLength 15 mm) to obtain the rheological property of the grain, the method can be used for providing a convenient test means for the prescription research of the grain and providing theoretical guidance and technical support for improving the extrusion molding quality of the grain.
Description
Technical Field
The invention belongs to the field of initiating explosive devices, and particularly relates to an internal friction force detection device for a grain.
Background
The initiating explosive device is widely applied to military and civil industries, the explosive column is one of initiating explosive devices which are widely applied, and the current forming mode of the large-length-diameter-ratio explosive column mostly adopts extrusion forming. The quality of the extrusion of the grain is mainly determined by the rheology of the energetic material, which depends on the ratio of the internal friction stress to the external friction stress. At present, no device for detecting the internal friction force of the grain is available at home, so that an internal friction force detection device for the grain is developed, a convenient test means can be provided for the prescription research of the grain, and theoretical guidance and technical support are provided for improving the extrusion molding quality of the grain.
Disclosure of Invention
In order to improve the extrusion molding quality of the grain, the invention provides an internal friction force detection device for the grain.
The mechanical structure of the grain filling and pressing machine of the invention comprises: the device comprises a lower supporting plate, an upper supporting plate, an explosion-proof motor, a guide shaft, a guide mounting plate, a linear electric cylinder, a linear bearing, a pressure sensor, a punch, a floating joint mounting plate, a push rod, a sleeve inner film, a sleeve outer die, a grain to be tested and a water bath heating device.
The connection relation is as follows: a guide shaft is connected between the lower supporting plate and the upper supporting plate, the lower supporting plate is installed on the fixing surface, the linear electric cylinder is fixed on the upper supporting plate, and a floating joint on the linear electric cylinder is connected with a floating joint installation plate. Two linear bearings are arranged on the guide shaft, the guide mounting plate is rectangular, two ends of the guide mounting plate are provided with linear bearing mounting holes, and the linear bearings and the mounting holes of the guide mounting plate are positioned in a matched mode. The floating joint mounting plate is connected to the upper side of the guide mounting plate, the pressure sensor is connected to the lower side of the guide mounting plate, and the pressure sensor is connected with the punch below. The lower part of the water bath heating device is connected with the lower supporting plate, and the middle part is provided with a sleeve mounting hole. The sleeve comprises two parts in, and its inside has the grain mounting hole that is equipped with, and the grain is fixed in the grain mounting hole of sleeve, directly places in water bath heating device. The lower half part of the push rod is contacted with the sleeve, the lower surface is contacted with the grain, and the punch is arranged right above the lower half part.
The beneficial effects of the invention are that
The invention can effectively complete the test of the internal friction of the grain, and realize the test of the internal friction of the standard grain (phi 7mm and length 15 mm), thereby obtaining the rheological property of the grain, being capable of providing a convenient test means for the prescription research of the grain and providing theoretical guidance and technical support for improving the extrusion molding quality of the grain.
Drawings
Fig. 1 is a front view of the internal friction force detecting device of the present invention.
Fig. 2 is a left side view of the internal friction force detecting device of the present invention.
FIG. 3 is a schematic diagram of a machine measurement assembly of the present invention.
In the figure: the explosion-proof device comprises a lower support plate 1, an upper support plate 2, an explosion-proof motor 3, a guide shaft 4, a guide mounting plate 5, a linear electric cylinder 6, a linear bearing 7, a pressure sensor 8, a punch 9, a floating joint mounting plate 10, a push rod 11, a sleeve inner die 12, a sleeve outer die 13, a to-be-detected explosive column 14 and a water bath heating device 15.
Detailed Description
The invention will be further described with reference to the drawings and specific examples.
Example 1
As shown in fig. 1 and 2, the internal friction force detection device of the present invention includes: the explosion-proof device comprises a lower support plate 1, an upper support plate 2, an explosion-proof motor 3, a guide shaft 4, a guide mounting plate 5, a linear electric cylinder 6, a linear bearing 7, a pressure sensor 8, a punch 9, a floating joint mounting plate 10, a push rod 11, a sleeve inner die 12, a sleeve outer die 13, a to-be-detected explosive column 14 and a water bath heating device 15.
The connection relation is as follows: a guide shaft 4 is connected between the lower support plate 1 and the upper support plate 2, the lower support plate 1 is arranged on a fixed surface, the linear electric cylinder 6 is fixed on the upper support plate 2, and a floating joint on the linear electric cylinder 6 is connected with a floating joint mounting plate 10. Two linear bearings 7 are arranged on the guide shaft 4, the guide mounting plate 5 is rectangular, two ends of the guide mounting plate are provided with linear bearing mounting holes, and the linear bearings 7 and the mounting holes of the guide mounting plate 5 are positioned in a matched mode. The upper part of the guide mounting plate 5 is connected with a floating joint mounting plate 10, the lower part is connected with a pressure sensor 8, and the pressure sensor 8 is connected with a punch 9 below. The lower part of the water bath heating device 13 is connected with the lower supporting plate 1, and the middle part is provided with a sleeve mounting hole. The sleeve 12 is composed of an inner two parts, a grain mounting hole is formed in the inner part of the sleeve, and a grain 13 is fixed in the grain mounting hole of the sleeve 12 and is directly placed in the water bath heating device 14. The lower half part of the push rod 11 is contacted with the sleeve 12, the lower surface is contacted with the grain 13, and the punch 9 is arranged right above.
The explosion-proof motor 3 is connected with the linear electric cylinder 6 through a flange, and a motor shaft is fastened and matched with a synchronous wheel in the electric cylinder 6 to conduct power. So that the electric cylinder 6 is extended and retracted under the action of the motor.
The sleeve is convenient to assemble and disassemble, the sleeve consists of an inner die and an outer die, and the outer die, the inner die, the outer die and the water bath heating device are positioned in a matched mode. When the explosive column is installed, the inner die and the outer die are separated, the inner die is sleeved into the outer die after the explosive column is installed in the installation hole in the inner die, the axial movement of the explosive column is prevented, and the installation is simple and quick. When the explosive column is disassembled, the inner die and the outer die of the sleeve are directly taken out from the water bath heating device, the explosive column is directly taken out from the inner die after the inner die and the outer die are separated, the disassembly is convenient, and the residual explosive is cleaned simply and quickly.
The working process of the internal friction force detection device for the explosive column is described as follows:
Before the equipment is started, the grain to be tested with the number 14 is arranged in the die sleeve inner die 12, the sleeve outer die 13 prevents the grain to be tested from moving axially, and the water bath heating device with the number 15 heats the grain to be tested. The explosive column 13 to be tested is heated to a set temperature and then is subjected to constant temperature control, at the moment, the explosion-proof motor 3 works, the linear electric cylinder 6 drives the punch 9 to move downwards to contact the push rod 11, the stress is transferred to the push rod 11, and the load is applied to the radial direction of the explosive column 14 to be tested through the push rod 11. Along with the gradual increase of the pressure, the grain 14 to be detected is sheared, and the maximum pressure P measured by the pressure sensor 8 plus the gravity N of the push rod 11 is the shearing stress F of the grain 14. The internal friction stress is now taken from the following expression:
At this time, d-diameter of the grain to be measured
The sleeve of the equipment is convenient to assemble and disassemble, the sleeve consists of an inner die and an outer die, and the outer die, the inner die, the outer die and the water bath heating device are positioned in a matched mode. When the explosive column is installed, the inner mould is separated, the inner mould is sleeved into the outer mould after the explosive column is installed in the installation hole in the inner mould, and the axial movement of the explosive column is prevented, so that the installation is simple and quick. When the explosive column is dismounted, the sleeve inner die is directly taken out from the water bath heating device, the explosive column is directly taken out from the inner die after the inner die is separated, the dismounting is convenient, and the cleaning of residual explosive is simple and quick.
The internal friction force detection device for the grain can be applied to the test of the internal friction force of a standard grain (phi 7mm and length 15 mm), can provide a convenient test means for the prescription research of the grain, and provides theoretical guidance and technical support for improving the extrusion forming quality of the grain.
Claims (3)
1. An internal friction force detection device for a grain, which is characterized in that: comprising the following steps: the device comprises a lower supporting plate (1), an upper supporting plate (2), an explosion-proof motor (3), a guide shaft (4), a guide mounting plate (5), a linear electric cylinder (6), a linear bearing (7), a pressure sensor (8), a punch (9), a floating joint mounting plate (10), a push rod (11), a sleeve inner die (12), a sleeve outer die (13), a grain (14) and a water bath heating device (15); a guide shaft (4) is connected between the lower supporting plate (1) and the upper supporting plate (2), the lower supporting plate (1) is arranged on a fixed surface, the linear electric cylinder (6) is fixed on the upper supporting plate (2), the explosion-proof motor (3) is connected with the linear electric cylinder (6) through a flange, and a floating joint on the linear electric cylinder (6) is connected with a floating joint mounting plate (10); two linear bearings (7) are arranged on the guide shaft (4), the guide mounting plate (5) is rectangular, two ends of the guide mounting plate are provided with linear bearing mounting holes, and the linear bearings (7) and the mounting holes of the guide mounting plate (5) are positioned in a matched manner; a floating joint mounting plate (10) is connected above the guide mounting plate (5), a pressure sensor (8) is connected below the guide mounting plate, and the pressure sensor (8) is connected with a punch (9) below the guide mounting plate; the lower part of the water bath heating device (15) is connected with the lower supporting plate (1), and the middle part is provided with a sleeve mounting hole; the sleeve consists of a sleeve inner die (12) and a sleeve outer die (13), wherein the sleeve inner die (12) is provided with a mounting hole for mounting the explosive column, and the sleeve outer die (13) is used for fixing the explosive column and preventing the axial movement of the explosive column; the explosive column (14) is fixed in an explosive column mounting hole of the sleeve inner die (12), is directly placed in the water bath heating device (15), the lower half part of the push rod (11) is contacted with the sleeve, the lower surface is contacted with the explosive column (14), and the punch (9) is arranged right above the lower surface.
2. The internal friction force detection device for a grain according to claim 1, wherein: through the water bath heating device, different environment temperatures in the production and processing of the grain can be effectively simulated, and the internal friction force of the grain at different temperatures can be measured.
3. The internal friction force detection device for a grain according to claim 1, wherein: no dead angle exists in the sleeve, and the residual medicine is cleaned conveniently and rapidly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111306036.9A CN114018762B (en) | 2021-11-05 | 2021-11-05 | Internal friction force detection device for explosive column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111306036.9A CN114018762B (en) | 2021-11-05 | 2021-11-05 | Internal friction force detection device for explosive column |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114018762A CN114018762A (en) | 2022-02-08 |
| CN114018762B true CN114018762B (en) | 2024-07-19 |
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ID=80061551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111306036.9A Active CN114018762B (en) | 2021-11-05 | 2021-11-05 | Internal friction force detection device for explosive column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114018762B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101571492A (en) * | 2009-06-11 | 2009-11-04 | 长安大学 | Three-dimensional reconstruction based explosive fluidity measuring method |
| CN101982721A (en) * | 2010-10-13 | 2011-03-02 | 宜宾北方川安化工有限公司 | Method for coating grains |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105928871B (en) * | 2016-05-30 | 2019-10-25 | 北京理工大学 | A kind of packaged explosive friction testing system and its test method |
-
2021
- 2021-11-05 CN CN202111306036.9A patent/CN114018762B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101571492A (en) * | 2009-06-11 | 2009-11-04 | 长安大学 | Three-dimensional reconstruction based explosive fluidity measuring method |
| CN101982721A (en) * | 2010-10-13 | 2011-03-02 | 宜宾北方川安化工有限公司 | Method for coating grains |
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| Publication number | Publication date |
|---|---|
| CN114018762A (en) | 2022-02-08 |
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