CN112834327A - Hopkinson torsion bar hydraulic clamping and releasing device - Google Patents
Hopkinson torsion bar hydraulic clamping and releasing device Download PDFInfo
- Publication number
- CN112834327A CN112834327A CN202110149831.5A CN202110149831A CN112834327A CN 112834327 A CN112834327 A CN 112834327A CN 202110149831 A CN202110149831 A CN 202110149831A CN 112834327 A CN112834327 A CN 112834327A
- Authority
- CN
- China
- Prior art keywords
- torsion bar
- cylinder body
- clamping
- piston
- hopkinson torsion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
- G01N2203/0411—Chucks, fixtures, jaws, holders or anvils using pneumatic or hydraulic pressure
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)
- Springs (AREA)
- Jigs For Machine Tools (AREA)
Abstract
The invention discloses a hydraulic clamping and releasing device for a Hopkinson torsion bar, belongs to the field of material dynamic mechanical property experimental equipment, and aims to solve the problems that the clamping force of an existing Hopkinson torsion bar clamping and releasing mechanism cannot be accurately controlled, the releasing process is slow, and the repeatability is poor. The invention comprises a cylinder body, a piston, a guide bolt, a pushing sleeve, an elastic chuck, a cylinder body gland, a belleville spring, a hydraulic oil pump and an electromagnetic quick pressure release valve; during clamping operation, the hydraulic oil pump is used for quickly injecting oil to the oil injection hole, the piston is pushed to move rightwards along the axial direction, the pushing sleeve is pushed to move rightwards to apply pressure, the belleville spring and the elastic chuck are simultaneously pressed and deformed, and the elastic chuck clamps the input rod of the Hopkinson torsion bar; during releasing operation, the oil in the cavity where the piston is located is quickly unloaded through the electromagnetic quick pressure relief valve, the push sleeve is instantly bounced leftwards by the butterfly spring, the elastic chuck is loosened, a gap is formed between the elastic chuck and the push sleeve, and the input rod of the Hopkinson torsion bar is instantly released.
Description
Technical Field
The invention relates to a device for loading and releasing torque of an input rod of a Hopkinson torsion bar experiment system, and belongs to the field of material dynamic mechanical property experiment equipment.
Background
The Hopkinson torsion bar device is an effective tool for researching the pure shearing mechanical property of the material under high strain rate, in particular to the thermoplastic shearing localization phenomenon. On the basis of compression, tension and torsion experiments, the stress triaxial degree of the material can be determined, and the fracture and breakage behaviors of the material under the action of dynamic load can be effectively forecasted. In the last 70 th century, t.nicholas et al invented a pre-stored energy type hopkinson torsion bar. The Hopkinson torsion bar is characterized in that a twisted input rod is divided into two sections by a fixed clamping and releasing mechanism, one section is provided with a loading head capable of adding external torque (load), the loading head rotates by using a jack/hydraulic oil cylinder or other devices so as to apply torque to the rod to pre-store torsion transformation performance, and the clamping and releasing mechanism clamps the rod to prevent the rod from rotating; the other section is connected with the loaded test piece. When the pre-storage variable performance reaches the experiment preset value, the clamping and releasing mechanism instantly releases the rod, and the pre-storage variable performance (stress and strain) is transmitted to the test piece in a wave form to form a torsion and carrier wave to act on the test piece. The basic requirement for the clamping and release mechanism is that the torsion bar be reliably clamped and released instantaneously when torque is applied.
The clamping and releasing mechanism of the conventional Hopkinson torsion bar mainly comprises two hinged semicircular bridge arms and a slotted bolt, clamping force is applied to an input torsion bar through screwing of the slotted bolt (or adopting a hydraulic cylinder or a jack in the symmetrical direction of the slotted bolt), and when the applied torque reaches an experimental preset value, the slotted bolt is further screwed (or loading of the jack in the other direction) to break the slotted bolt, so that the torsion bar is released instantly. The clamping release mechanism is easy to screw off the slotted bolt when clamping force is applied, so that the experiment fails; or the applied clamping force is not enough to overcome the applied torque, and the clamping force is continuously increased (bolts are screwed) in the loading process to prevent the torsion bar from rotating, so that the bolts are frequently suddenly broken in the process, and the experiment fails; on the other hand, the release of the torsion bar is realized by the fracture of the grooving bolt, one grooving bolt is needed to be consumed in each experiment, the cost of the experiment is greatly increased, the grooving bolt has certain randomness in processing and material, and the twisting-off time also has certain randomness, so that the experiment failure is often caused; the repeatability of experimental conditions is seriously influenced, the experimental reliability is low, and the development and the application of the Hopkinson torsion bar are restricted.
Disclosure of Invention
The invention aims to solve the problems that the clamping force of the existing Hopkinson torsion bar clamping and releasing mechanism cannot be accurately controlled, the releasing process is slow, and the repeatability is poor, and provides a hydraulic clamping and releasing device for a Hopkinson torsion bar.
The invention relates to a Hopkinson torsion bar hydraulic clamping and releasing device which comprises a cylinder body 1, a piston 3, a guide bolt 4, a pushing sleeve 5, an elastic chuck 6, a cylinder body gland 7, a belleville spring 9, a hydraulic oil pump and an electromagnetic quick pressure release valve, wherein the piston is arranged on the cylinder body 1;
a through hole is formed in the bottom of the left end of the cylinder body 1, and a cylinder body gland 7 is arranged on the right end opening of the cylinder body 1;
an input rod 8 of the Hopkinson torsion bar sequentially penetrates through a left end through hole of the cylinder body 1 and a central through hole of a right end cylinder body gland 7;
an elastic chuck 6 is sleeved outside an input rod 8 of the Hopkinson torsion bar, the clamping end part of the elastic chuck 6 is fixedly clamped with a cylinder body gland 7, and a pushing sleeve 5 is sleeved outside the elastic chuck 6;
the pushing sleeve 5 is divided into a left section and a right section, the outer diameter of the right section is matched with the inner diameter of the cavity of the cylinder body 1, and the outer diameter of the left section is matched with the inner diameter of the through hole at the left end of the cylinder body 1;
a belleville spring 9 is arranged in a gap between the right end face of the pushing sleeve 5 and the cylinder body gland 7, a piston 3 is arranged in a cavity formed between the left section of the pushing sleeve 5 and the side wall and the bottom of the left end of the cylinder body 1, the outer circle of the piston 3 is sealed with the side wall of the cylinder body 1, and the inner hole of the piston 3 is sealed with the outer wall of the left section of the pushing sleeve 5;
an oil filling hole 2 is formed in the side wall of the cylinder body 1, and the oil filling hole 2 is communicated with a cavity where the piston 3 is located;
during clamping operation, the oil is rapidly injected into the oil injection hole 2 through a hydraulic oil pump, the piston 3 is pushed to move rightwards along the axial direction, the pushing sleeve 5 is pushed to move rightwards to apply pressure, the belleville spring 9 and the elastic chuck 6 are simultaneously pressed and deformed, and the elastic chuck 6 clamps the input rod 8 of the Hopkinson torsion bar;
during releasing operation, the oil in the cavity where the piston 3 is located is quickly unloaded through the electromagnetic quick pressure relief valve, the push sleeve 5 is instantly bounced leftwards by the belleville spring 9, the elastic chuck 6 is loosened, a gap is formed between the elastic chuck and the push sleeve 5, and the input rod 8 of the Hopkinson torsion bar is instantly released.
Preferably, the seal is a Y-shaped seal ring and/or a circular seal ring.
Preferably, the right end of the pushing sleeve 5 is provided with a tapered inner hole 51, the tapered inner hole 51 of the pushing sleeve 5 is matched with the tapered outer circle 61 of the elastic chuck 6, a gap exists between the pushing sleeve 5 and the tapered outer circle 61 of the elastic chuck 6 in a releasing state, the gap between the pushing sleeve 5 and the tapered outer circle 61 of the elastic chuck 6 disappears in a clamping state, and the elastic chuck 6 is pressed to clamp the input rod 8 of the hopkinson torsion bar.
Preferably, the conical angle of the conical inner bore of the thrust sleeve 5 is 29.5 degrees and the conical angle of the conical outer circumference 61 of the collet 6 in the released state is 30 degrees.
Preferably, m guide grooves 52 are uniformly distributed on the right section of the outer circle of the pushing sleeve 5 along the circumferential direction, m is larger than or equal to 3, m bolt holes are correspondingly formed in the side wall of the cylinder body 1 along the circumferential direction, the guide bolts 4 are assembled through the corresponding bolt holes, the thread end parts of the guide bolts 4 are in clearance fit with the bottoms of the corresponding guide grooves 52, and the m guide bolts 4 are used for limiting the rotation of the pushing sleeve 5 and move in the guide grooves 52 along the axial direction during clamping or releasing operation.
Preferably, collet 6 is a DIN6343 collet chuck type collet.
Preferably, the belleville spring 9 is a belleville spring with an outer diameter D90, a wall thickness of 3.5 mm and a limit travel h0 of 2.5 mm.
Preferably, the belleville spring 9 is of a one-piece or two-piece stacked structure.
Preferably, the right end surface of the piston 3 is in clearance fit with the left end surface of the right section of the pushing sleeve 5; the left end surface of the piston 3 is in clearance fit with the bottom of the left end of the cylinder body 1, and the clearance corresponds to the position of the oil hole 2.
Preferably, the hydraulic oil pump is a pump with a maximum pressure of 63 MPa.
The invention has the beneficial effects that: the Hopkinson torsion bar hydraulic type clamping and releasing device provided by the invention controls the clamping force of the elastic chuck by the pressure of hydraulic oil, can provide accurate clamping force according to the torque, can also apply maximum clamping force at one time according to the maximum torque, and the release of the torsion bar is controlled by the elastic force generated by the deformation of the quick pressure release valve and the belleville spring. The device solves the problems that the existing clamping and releasing device is complex in structural design and inconvenient to use, clamping force and releasing are not easy to control, randomness is high, experiment cost is high, reliability is poor and the like, realizes accurate control of the clamping force and instant releasing of torque load, ensures the consistency of experiments, reduces experiment difficulty and improves experiment efficiency.
Drawings
FIG. 1 is a schematic structural view of a Hopkinson torsion bar hydraulic clamping and releasing device according to the present invention, in a released state;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is a schematic structural view of a Hopkinson torsion bar hydraulic clamping and releasing device according to the present invention, in a clamping state;
fig. 4 is a schematic view showing a structure of a push sleeve, in which fig. 4(a) is a longitudinal sectional view of a front view of the push sleeve, fig. 4(b) is a sectional view taken along direction K of fig. 4(a), and fig. 4(c) is a plan view of a guide groove in fig. 4 (a);
fig. 5 is a schematic diagram of a standard DIN6343 collet, wherein fig. 5(a) is a physical diagram of the collet, fig. 5(b) is a schematic diagram of the structure of the collet, D1 is the small end diameter, D2 is the collet end diameter, and L is the collet length.
Detailed Description
The first embodiment is as follows: the present embodiment is described below with reference to fig. 1 to 5, and the hopkinson torsion bar hydraulic clamping and releasing device in the present embodiment includes a cylinder 1, a piston 3, a guide bolt 4, a pushing sleeve 5, an elastic chuck 6, a cylinder gland 7, a belleville spring 9, a hydraulic oil pump, and an electromagnetic quick relief valve;
a through hole is formed in the bottom of the left end of the cylinder body 1, and a cylinder body gland 7 is arranged on the right end opening of the cylinder body 1;
an input rod 8 of the Hopkinson torsion bar sequentially penetrates through a left end through hole of the cylinder body 1 and a central through hole of a right end cylinder body gland 7;
an elastic chuck 6 is sleeved outside an input rod 8 of the Hopkinson torsion bar, the clamping end part of the elastic chuck 6 is fixedly clamped with a cylinder body gland 7, and a pushing sleeve 5 is sleeved outside the elastic chuck 6;
the pushing sleeve 5 is divided into a left section and a right section, the outer diameter of the right section is matched with the inner diameter of the cavity of the cylinder body 1, and the outer diameter of the left section is matched with the inner diameter of the through hole at the left end of the cylinder body 1;
a belleville spring 9 is arranged in a gap between the right end face of the pushing sleeve 5 and the cylinder body gland 7, a piston 3 is arranged in a cavity formed between the left section of the pushing sleeve 5 and the side wall and the bottom of the left end of the cylinder body 1, the outer circle of the piston 3 is sealed with the side wall of the cylinder body 1, and the inner hole of the piston 3 is sealed with the outer wall of the left section of the pushing sleeve 5;
an oil filling hole 2 is formed in the side wall of the cylinder body 1, and the oil filling hole 2 is communicated with a cavity where the piston 3 is located;
during clamping operation, the hydraulic oil pump is used for quickly injecting oil into the oil injection hole 2, the piston 3 is pushed to move rightwards along the axial direction, the pushing sleeve 5 is pushed to move rightwards to apply pressure, the belleville spring 9 and the elastic chuck 6 are simultaneously pressed and deformed, and the torsion bar 8 is clamped by the elastic chuck 6;
during releasing operation, the oil in the cavity where the piston 3 is located is quickly unloaded through the electromagnetic quick pressure relief valve, the push sleeve 5 is instantly bounced leftwards by the belleville spring 9, the elastic chuck 6 is loosened, a gap is formed between the elastic chuck and the push sleeve 5, and the input rod 8 of the Hopkinson torsion bar is instantly released.
The Y-shaped sealing ring 11 and/or the circular sealing ring 10 are adopted for sealing, sealing can be realized by adopting any one of the two types of sealing rings, and the sealing effect is better by adopting the two types of sealing rings.
The right end of the pushing sleeve 5 is provided with a conical inner hole 51, the conical inner hole 51 of the pushing sleeve 5 is matched with the conical excircle 61 of the elastic chuck 6, a gap exists between the pushing sleeve 5 and the conical excircle 61 of the elastic chuck 6 in a releasing state, the gap between the pushing sleeve 5 and the conical excircle 61 of the elastic chuck 6 disappears in a clamping state, and the elastic chuck 6 is pressed to clamp the input rod 8 of the Hopkinson torsion bar.
The taper angle of the tapered inner hole of the pushing sleeve 5 is 29.5 degrees, and the taper angle of the tapered outer circle 61 of the collet 6 in the released state is 30 degrees.
The m guide grooves 52 are uniformly distributed on the right section of the outer circle of the pushing sleeve 5 along the circumferential direction, m is larger than or equal to 3, m bolt holes are correspondingly formed in the side wall of the cylinder body 1 along the circumferential direction, the guide bolts 4 are assembled through the corresponding bolt holes, the thread end parts of the guide bolts 4 are in clearance fit with the bottoms of the corresponding guide grooves 52, and the m guide bolts 4 are used for limiting the rotation of the pushing sleeve 5 and move in the guide grooves 52 along the axial direction when in clamping or releasing operation.
The right end surface of the piston 3 is in clearance fit with the left end surface of the right section of the pushing sleeve 5; the left end surface of the piston 3 is in clearance fit with the bottom of the left end of the cylinder body 1, and the clearance corresponds to the position of the oil hole 2.
The working principle is as follows:
the piston 3 is placed outside one end of the pushing and pressing sleeve 5 and can move along the axial direction of the pushing and pressing sleeve 5, then the pushing and pressing sleeve 5 is installed in a round hole in the end face of the cylinder body 1 through a Y-shaped sealing ring 11 and an O-shaped ring 10 to guarantee sealing, the elastic chuck 6 is placed in an inner hole of the pushing and pressing sleeve 5, and the belleville spring 9 is placed between the end face of the pushing and pressing sleeve 5 and the cylinder body gland 7.
And the inner hole and the outer circle of the piston 3 are provided with a Y-shaped sealing ring 11 and an O-shaped ring 10, so that the effective sealing between the piston 3 and the cylinder body 1 and the pushing and pressing sleeve 5 is ensured when the piston 3 moves in the cylinder body 1.
Three guide grooves 52 are uniformly distributed in the circumferential direction of the pushing sleeve 5, three threaded holes are uniformly distributed in the cylinder body 1, and the three guide bolts 4 are in contact with the three guide grooves 52 in the pushing sleeve 5 in a clearance fit mode, so that the axial movement of the pushing sleeve 5 and the rotation of the pushing sleeve 5 are prevented.
The pushing sleeve 5 has a gap between the angle of the conical inner hole 51 of 29.5 degrees and the angle of the conical outer circle 61 of the elastic chuck 6 of 30 degrees, when the pushing sleeve 5 moves rightwards under the action of the piston 3, the gap between the conical inner hole 51 and the conical outer circle 61 disappears, so that the belleville spring 9 and the elastic chuck 6 are simultaneously pressed and deformed, and the elastic chuck 6 reliably clamps the input rod 8 of the Hopkinson bar. When the hydraulic oil is unloaded by the quick pressure release valve, the butterfly spring 9 instantly bounces the pushing sleeve 5 leftwards, a gap is instantly formed between the pushing sleeve 5 and the elastic chuck 6, and the input rod 8 of the Hopkinson torsion bar is instantly released.
The second embodiment is as follows: in this embodiment, the collet 6 is a collet of DIN6343 collet type, which is further described in the first embodiment.
The standard chuck is adopted, and the hydraulic device of the invention is used for driving the clamping and releasing of the standard chuck.
The third concrete implementation mode: in the first embodiment, the disc spring 9 has an outer diameter D90, a wall thickness of 3.5 mm, and a limit stroke h0 of 2.5 mm.
The belleville spring 9 adopts a one-piece structure or a two-piece superposed structure. The belleville spring 9 can be realized by adopting a one-piece structure, and if two pieces of the belleville spring are overlapped for use, the elastic restoring force generated by the belleville spring when the compression stroke of the belleville spring is 2.5 millimeters can reach 3.5 tons.
The fourth concrete implementation mode: in this embodiment, the first embodiment will be further described, and the hydraulic oil pump is a pump with a maximum pressure of 63 Mpa.
The hydraulic oil pump can realize the loading capacity that the pre-stored torque in the rod is more than 400N/m when the working pressure is 50 Mpa.
Claims (10)
1. A Hopkinson torsion bar hydraulic type clamping and releasing device is characterized by comprising a cylinder body (1), a piston (3), a guide bolt (4), a pushing sleeve (5), an elastic chuck (6), a cylinder body gland (7), a belleville spring (9), a hydraulic oil pump and an electromagnetic quick pressure release valve;
a through hole is formed in the bottom of the left end of the cylinder body (1), and a cylinder body gland (7) is arranged in the right end opening of the cylinder body (1);
an input rod (8) of the Hopkinson torsion bar sequentially penetrates through a left end through hole of the cylinder body (1) and a central through hole of a right end cylinder body gland (7);
an elastic chuck (6) is sleeved outside an input rod (8) of the Hopkinson torsion bar, the clamping end part of the elastic chuck (6) is fixedly clamped with a cylinder body gland (7), and a pushing sleeve (5) is sleeved outside the elastic chuck (6);
the pushing sleeve (5) is divided into a left section and a right section, the outer diameter of the right section is matched with the inner diameter of the cavity of the cylinder body (1), and the outer diameter of the left section is matched with the inner diameter of the through hole at the left end of the cylinder body (1);
a belleville spring (9) is arranged in a gap between the right end face of the pushing sleeve (5) and the cylinder body gland (7), a piston (3) is arranged in a cavity formed between the left section of the pushing sleeve (5) and the side wall of the cylinder body (1) and the bottom of the left end of the cylinder body, the outer circle of the piston (3) is sealed with the side wall of the cylinder body (1), and the inner hole of the piston (3) is sealed with the outer wall of the left section of the pushing sleeve (5);
an oil filling hole (2) is formed in the side wall of the cylinder body (1), and the oil filling hole (2) is communicated with a cavity where the piston (3) is located;
during clamping operation, the oil is rapidly injected into the oil injection hole (2) through a hydraulic oil pump, the piston (3) is pushed to move rightwards along the axial direction, the pushing sleeve (5) is pushed to move rightwards to apply pressure, the belleville spring (9) and the elastic chuck (6) are simultaneously pressed and deformed, and the input rod (8) of the Hopkinson torsion bar is clamped by the elastic chuck (6);
during releasing operation, the oil in the cavity where the piston (3) is located is quickly unloaded through the electromagnetic quick pressure relief valve, the push sleeve (5) is instantly bounced leftwards by the belleville spring (9), the elastic chuck (6) is loosened, a gap is formed between the elastic chuck and the push sleeve (5), and the input rod (8) of the Hopkinson torsion bar is instantly released.
2. The hopkinson torsion bar hydraulic clamping and release device of claim 1, wherein the seal is a Y-ring seal and/or a circular seal.
3. The hopkinson torsion bar hydraulic clamping and releasing device as claimed in claim 1, wherein the right end of the push sleeve (5) has a tapered inner hole (51), the tapered inner hole (51) of the push sleeve (5) is matched with the tapered outer circle (61) of the collet chuck (6), a gap exists between the push sleeve (5) and the tapered outer circle (61) of the collet chuck (6) in the release state, the gap between the push sleeve (5) and the tapered outer circle (61) of the collet chuck (6) disappears in the clamping state, and the collet chuck (6) is pressed to clamp the input rod (8) of the hopkinson torsion bar.
4. Hopkinson torsion bar hydraulic clamping and release device according to claim 3, wherein the taper angle of the tapered inner bore of the push sleeve (5) is 29.5 degrees and the taper angle of the tapered outer circle (61) of the collet (6) in the release state is 30 degrees.
5. The Hopkinson torsion bar hydraulic clamping and releasing device according to claim 2, wherein m guide grooves (52) are uniformly distributed on the outer circle of the right section of the pushing sleeve (5) along the circumferential direction, m is larger than or equal to 3, m bolt holes are correspondingly formed in the side wall of the cylinder body (1) along the circumferential direction, the guide bolts (4) are assembled through the corresponding bolt holes, the threaded end parts of the guide bolts (4) are in clearance fit with the bottoms of the corresponding guide grooves (52), and the m guide bolts (4) are used for limiting the rotation of the pushing sleeve (5) and move in the guide grooves (52) along the axial direction during clamping or releasing operation.
6. Hopkinson torsion bar hydraulic clamping and release device according to claim 1, characterised in that the collet (6) is of the cartridge clamp type DIN 6343.
7. Hopkinson torsion bar hydraulic clamping and release device according to claim 1, characterised in that the belleville springs (9) are chosen with an outer diameter D90, a wall thickness of 3.5 mm and a limit travel h0 of 2.5 mm.
8. Hopkinson torsion bar hydraulic clamping and release device according to claim 1 or 7, characterized in that the belleville springs (9) are of one-piece or two-piece stacked structure.
9. The hopkinson torsion bar hydraulic clamping and releasing device as claimed in claim 1, wherein a right end surface of the piston (3) is in clearance fit with a left end surface of a right section of the push sleeve (5); the left end surface of the piston (3) is in clearance fit with the bottom of the left end of the cylinder body (1), and the position of the clearance corresponds to the position of the oil hole (2).
10. The hopkinson torsion bar hydraulic clamping and releasing device as claimed in claim 1, wherein the hydraulic oil pump is a pump with a maximum pressure of 63 Mpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110149831.5A CN112834327B (en) | 2021-02-03 | 2021-02-03 | Hopkinson torsion bar hydraulic clamping and releasing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110149831.5A CN112834327B (en) | 2021-02-03 | 2021-02-03 | Hopkinson torsion bar hydraulic clamping and releasing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112834327A true CN112834327A (en) | 2021-05-25 |
| CN112834327B CN112834327B (en) | 2022-07-12 |
Family
ID=75931951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110149831.5A Active CN112834327B (en) | 2021-02-03 | 2021-02-03 | Hopkinson torsion bar hydraulic clamping and releasing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112834327B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115452551A (en) * | 2022-08-23 | 2022-12-09 | 中国人民解放军空军工程大学 | Pneumatic Hopkinson torsion bar device and operation method |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1813823A2 (en) * | 2006-01-31 | 2007-08-01 | SITEMA GmbH & Co. KG | Clamping device |
| CN202169505U (en) * | 2011-08-10 | 2012-03-21 | 温州职业技术学院 | Automatic clamping-type numerical control module |
| CN203792061U (en) * | 2014-03-31 | 2014-08-27 | 王彤宾 | Hydraulic clamping mechanism |
| CN104697854A (en) * | 2015-03-11 | 2015-06-10 | 中国人民解放军陆军军官学院 | Hydraulic surrounding type locking and releasing device for energy pre-storage type Hopkinson torsional bar |
| CN104897486A (en) * | 2015-05-20 | 2015-09-09 | 西北工业大学 | Electromagnetic torsional split-Hopkinson bar loading device |
| CN108645696A (en) * | 2018-05-10 | 2018-10-12 | 西安交通大学 | A kind of separate type split-Hopkinson torsional bar accumulation of energy and release device and operating method |
| CN110057663A (en) * | 2019-02-28 | 2019-07-26 | 西南交通大学 | Electromagnetic type split-Hopkinson torsional bar clamps and release device |
| CN111366485A (en) * | 2020-04-20 | 2020-07-03 | 南京山河特种设备科技有限公司 | Torsion locking and releasing device of Hopkinson torsion bar |
| CN111366486A (en) * | 2020-04-20 | 2020-07-03 | 南京山河特种设备科技有限公司 | Torsion locking and releasing device |
-
2021
- 2021-02-03 CN CN202110149831.5A patent/CN112834327B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1813823A2 (en) * | 2006-01-31 | 2007-08-01 | SITEMA GmbH & Co. KG | Clamping device |
| CN202169505U (en) * | 2011-08-10 | 2012-03-21 | 温州职业技术学院 | Automatic clamping-type numerical control module |
| CN203792061U (en) * | 2014-03-31 | 2014-08-27 | 王彤宾 | Hydraulic clamping mechanism |
| CN104697854A (en) * | 2015-03-11 | 2015-06-10 | 中国人民解放军陆军军官学院 | Hydraulic surrounding type locking and releasing device for energy pre-storage type Hopkinson torsional bar |
| CN104897486A (en) * | 2015-05-20 | 2015-09-09 | 西北工业大学 | Electromagnetic torsional split-Hopkinson bar loading device |
| CN108645696A (en) * | 2018-05-10 | 2018-10-12 | 西安交通大学 | A kind of separate type split-Hopkinson torsional bar accumulation of energy and release device and operating method |
| CN110057663A (en) * | 2019-02-28 | 2019-07-26 | 西南交通大学 | Electromagnetic type split-Hopkinson torsional bar clamps and release device |
| CN111366485A (en) * | 2020-04-20 | 2020-07-03 | 南京山河特种设备科技有限公司 | Torsion locking and releasing device of Hopkinson torsion bar |
| CN111366486A (en) * | 2020-04-20 | 2020-07-03 | 南京山河特种设备科技有限公司 | Torsion locking and releasing device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115452551A (en) * | 2022-08-23 | 2022-12-09 | 中国人民解放军空军工程大学 | Pneumatic Hopkinson torsion bar device and operation method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112834327B (en) | 2022-07-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113029756B (en) | Hopkinson torsion bar hydraulic clamping and releasing device | |
| US6386088B1 (en) | Hydraulic cylinder | |
| CN112834327B (en) | Hopkinson torsion bar hydraulic clamping and releasing device | |
| US2912262A (en) | Tube coupling allowing limited axial movement of the tube | |
| WO2017050805A1 (en) | Hydraulic clamping device, system comprising such device and method of interconnecting a hub and a shaft | |
| CN111366485A (en) | Torsion locking and releasing device of Hopkinson torsion bar | |
| CN105689749A (en) | High-speed hydraulic chuck with centrifugal compensation function | |
| CN113639024A (en) | Dead electronic jar of lead screw nut floating centering anti-sticking | |
| CN104499978A (en) | Bidirectional disc-spring jar accelerator and accelerating method thereof | |
| CN201714745U (en) | Disc clamp-type mechanical locking oil cylinder | |
| CN114799982A (en) | Double-conical-surface boosting clamping mechanism | |
| CN112461641B (en) | One-way thread transmission static force loading device | |
| CN212070551U (en) | Mechanical reinforcement clamping mechanism of machine tool | |
| US9533402B2 (en) | Hydraulically operated tightening tool | |
| CN205290468U (en) | Tight structure is pressed from both sides in decompression | |
| CN211738008U (en) | Hydraulic conical surface metal sealing process plug | |
| CN203705257U (en) | Flange tensioning device for marine riser testboard | |
| CN208344558U (en) | A kind of marmem driving separating mechanism | |
| CN218327481U (en) | Automatic overload releasing device | |
| CN103776688A (en) | Marine riser test bed flange tension device | |
| CN206104904U (en) | Tailstock sleeve locking device | |
| CN216691636U (en) | Energy-storage type manual thread pump | |
| CN218066178U (en) | Packer dabber locking screw thread verifying attachment | |
| Liu | Mechanical Chuck Design and Slip Strength Analysis | |
| CN203948371U (en) | A kind of locking device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |