CN110879182A - Adjustable torsion fiber driving test bed and working method thereof - Google Patents
Adjustable torsion fiber driving test bed and working method thereof Download PDFInfo
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- CN110879182A CN110879182A CN201811031484.0A CN201811031484A CN110879182A CN 110879182 A CN110879182 A CN 110879182A CN 201811031484 A CN201811031484 A CN 201811031484A CN 110879182 A CN110879182 A CN 110879182A
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- 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
- G01N3/26—Investigating twisting or coiling properties
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- 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
- G01N2203/003—Generation of the force
- G01N2203/005—Electromagnetic means
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- 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
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0075—Strain-stress relations or elastic constants
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- 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
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
- G01N2203/0278—Thin specimens
- G01N2203/028—One dimensional, e.g. filaments, wires, ropes or cables
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Abstract
The invention provides an adjustable torsion fiber driving test bed and a working method thereof, the test bed comprises a supporting device, a torsion device, a power device and a temperature box, the supporting device comprises two vertical beam frames, bottom beam seats and supporting plates which are arranged in parallel, the bottoms of the two vertical beam frames are fixed through the two bottom beam seats, the tops of the two vertical beam frames are connected through the supporting plates, a guide rail is arranged on the inner side of each vertical beam frame, the guide rail is connected with the corresponding vertical beam frame through a fixed support, the torsion device comprises a machine head piece, a bottom piece and a balance weight, the bottom piece is sleeved on the two guide rails and is positioned right below the machine head piece, one end of a fiber to be twisted is fixed on the machine head piece, the other end of the fiber to be twisted is fixed on the bottom piece, the bottom piece is connected with the balance weight. Aiming at the current situation that no portable equipment exists at present, the invention designs the adjustable torsion fiber driving test bed so as to achieve the standard state of accurately winding fibers and heating and reducing the fibers after stretching.
Description
Technical Field
The invention belongs to the field of adjustable torsion fiber driving, and particularly relates to an adjustable torsion fiber driving test bed and a working method thereof.
Background
The artificial muscle is studied in order to simulate the human force-exerting form and show the muscle superiority, and the muscle-like form factor of all the natural muscles with ideal properties is shown. More sophisticated techniques now include shape memory alloy actuators and shape memory polymer actuators. These materials shrink and expand in their cross-section by electrical, optical or chemical activation. Since these materials tend to exhibit small strain deformations, large deformations are typically achieved by parallel plate designs. Larger memory polymers have achieved the use of stacked designs to increase strain deformation, but these also lead to the emergence of some of the more bulky actuators. It has recently been found that by continually twisting certain twisted fibers to an extreme, until they form a coil, they can withstand forces and deformations even beyond the skeletal muscles of the human body, while maintaining a cord form. These "supercontinuum" actuators constructed from certain twisted fibers are capable of producing large power-to-weight ratios with high repeatable shrinkage strains. Research teams have shown that this can also be achieved by twisting commercially available fibers such as fish line, sewing line, etc., thereby providing an opportunity for very low cost, readily available artificial muscles. The test bed is utilized to simplify the manufacturing process of the artificial muscle and achieve a more standard winding structure.
Disclosure of Invention
In view of the above, the present invention is directed to provide an adjustable torsion fiber driving test bed and a working method thereof, and the adjustable torsion fiber driving test bed is designed to accurately wind fibers to achieve a standard state of heating and reducing after stretching, in view of the current situation that no portable device of this kind exists.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
an adjustable torsion fiber driving test bed comprises a supporting device, a torsion device and a power device, wherein the supporting device comprises two vertical beam frames, bottom beam seats and supporting plates which are arranged in parallel, the bottoms of the two vertical beam frames are fixed through the two bottom beam seats, the tops of the two vertical beam frames are connected through the supporting plates, a guide rail is arranged on the inner side of each vertical beam frame, and the guide rails are connected with the vertical beam frames at the corresponding positions through fixing supports;
the torsion device comprises a machine head piece, a bottom piece and a counterweight, wherein the bottom piece and the counterweight are sleeved on the two guide rails, the bottom piece is positioned right below the machine head piece, one end of a fiber to be twisted is fixed on the machine head piece, the other end of the fiber to be twisted is fixed on the bottom piece, and the bottom piece is connected with the counterweight;
the power device comprises a stepping motor and a transmission shaft, an output shaft of the stepping motor drives the transmission shaft to operate, and the transmission shaft penetrates through the support plate to be connected with the handpiece;
and an incubator is arranged outside the supporting device.
Furthermore, first through holes for accommodating the guide rails are formed in the bottom piece, each guide rail penetrates through one first through hole, first mounting holes for fixing the guide rails are formed in positions, corresponding to the two first through holes, on one side face of the bottom piece, a first twisting fiber connecting ring is arranged on the upper surface of the bottom piece, and a counterweight connecting ring is arranged on the lower surface of the bottom piece.
Furthermore, a transmission shaft connecting hole is formed in the middle of the nose piece, two second through holes for accommodating corresponding guide rails are formed in two sides of the nose piece respectively, a second mounting hole for fixing the guide rails is formed in a position, corresponding to the two second through holes, on one side surface of the bottom piece, a third mounting hole for fixing a transmission shaft is formed in a position, corresponding to the transmission shaft connecting hole, on one side surface of the bottom piece, and a second torsion fiber connecting ring is arranged on the lower surface of the nose piece.
Furthermore, two anti-bending pieces are sleeved on the guide rails and arranged above the bottom piece.
Furthermore, a torsion fiber through hole is formed in the middle of the bending prevention piece, and third through holes for accommodating the guide rails are formed in two sides of the bending prevention piece respectively.
Furthermore, a reinforcing member is arranged on one side of each of the two upright beam frames.
Furthermore, two sides of each guide rail are fixedly connected with the base beams on the respective sides through an angle frame.
The working method of the adjustable torsion fiber driving test bed comprises the following steps:
(1) changing the spatial position of the bottom piece according to the length of the fiber to be wound and twisted, so that the distance between the lower side of the head piece of the stepping motor at the upper end of the test bed and the upper side of the bottom piece meets the length of the fiber to be twisted;
(2) one end of the fiber to be twisted is tied to a second twisted fiber connecting ring on the lower surface of the head piece, the other end of the fiber to be twisted is tied to a first twisted fiber connecting ring on the upper surface of the bottom piece after penetrating through a twisted fiber through hole in the middle of the bending-proof piece, and a balance weight is connected to a balance weight connecting ring on the lower surface of the bottom piece in order to ensure that the fiber to be twisted keeps a straight state;
(3) turning on the stepping motor to enable the handpiece to rotate and drive the fibers to twist, pulling the bottom piece when the twisted fibers are wound to a certain limit, changing the height of the bottom piece, and stopping the stepping motor after the fibers are twisted into a spiral shape;
(4) loosening the screws for fixing the guide rail on the anti-bending piece and the bottom piece, moving the guide rail upwards, inserting the guide rail into the second through hole of the machine head piece, fixing the guide rail by using the screws, opening a heating switch of the incubator to heat the twisted fiber, and taking down the twisted fiber after the heat treatment is finished.
Compared with the prior art, the adjustable torsion fiber driving test bed has the following advantages:
the invention relates to an adjustable torsion fiber driving test bed,
1. at present, no mature torsion fiber driving test bed exists in the market, and the torsion fiber driving is required to occupy multiple persons to be completed simultaneously; the invention can complete the driving process of the twisting fiber by only one person, realizes the device of the driving process of the twisting fiber, ensures that the performance states of different twisted fibers are approximately the same after being driven, and solves the problem of the complexity of the twisting fiber and the non-standard property of pure manual manufacture.
2. The adjustable torsion fiber driving test bed can meet the torsion fiber driving requirements of different lengths, and after the required winding length of the fiber is determined, the length requirement is met by changing the position of the bottom piece on the guide rail.
3. The main material of the invention is a vertical structure made of aluminum, the space required for placing and experiment in the horizontal space does not need to be large, the whole structure can be easily transferred, and the experiment can be carried out in various places; each atress, protection component all adopt reinforcing methods such as cavity to produce, have guaranteed the security and the practicality of whole fibre platform.
4. The invention is provided with an external incubator which can heat the twisted fiber. Through the transmission device between the stepping motor and the machine head piece, the stepping motor can drive the test bed bracket to rotate, so that the torsion fiber can be uniformly heated in the incubator.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural diagram of an adjustable torsion fiber driving test bed according to an embodiment of the invention;
FIG. 2 is a schematic structural diagram of an adjustable torsion fiber driving test bed with the incubator, the stepping motor and the transmission shaft removed in a state that the fiber is not twisted;
FIG. 3 is a schematic view of the bottom structure;
FIG. 4 is a schematic view of a nose piece construction;
FIG. 5 is a schematic view of the structure of the bending prevention member;
FIG. 6 is a comparison of fibers before and after twisting.
Description of reference numerals:
1-base beam, 2-corner bracket, 3-upright beam frame, 4-bending-proof piece, 5-reinforcing piece, 6-head piece, 7-bottom piece, 8-fixed support, 9-guide rail, 10-incubator, 11-transmission shaft, 12-stepping motor, 13-third through hole, 14-first through hole, 15-first mounting hole, 16-first torsion fiber connecting ring, 17-counterweight connecting ring, 18-transmission shaft connecting hole, 19-second through hole, 20-second mounting hole, 21-third mounting hole, 22-torsion fiber through hole, 23-support plate, 24-counterweight, 25-fiber to be twisted, 26-second torsion fiber connecting ring.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1-6, a working method of an adjustable torsion fiber driving test bed comprises a supporting device, a torsion device and a power device, wherein the supporting device comprises two upright beam frames 3, base beam seats 1 and supporting plates 23 which are arranged in parallel, the bottoms of the two upright beam frames 3 are fixed through the two base beam seats 1, the tops of the two upright beam frames 3 are connected through the supporting plates 23, a guide rail 9 is arranged on the inner side of each upright beam frame 3, and each guide rail 9 is connected with the corresponding upright beam frame 3 through a fixing support 8;
the twisting device comprises a machine head piece 6, a bottom piece 7 and a counterweight 24, wherein the bottom piece 7 is sleeved on two guide rails 9, the bottom piece 7 is positioned right below the machine head piece 6, one end of a fiber 25 to be twisted is fixed on the machine head piece 6, the other end of the fiber is fixed on the bottom piece 7, and the bottom piece 7 is connected with the counterweight 24;
the power device comprises a stepping motor 12 and a transmission shaft 11, an output shaft of the stepping motor 12 drives the transmission shaft 11 to operate, and the transmission shaft 11 penetrates through a support plate 23 to be connected with the handpiece 6;
an incubator 10 is provided outside the support means.
The bottom piece 7 is provided with first through holes 14 for accommodating the guide rails 9, each guide rail 9 is arranged through one first through hole 14, a first mounting hole 15 for fixing the guide rail 9 is arranged at a position corresponding to the two first through holes 14 on one side surface of the bottom piece 7, a first torsion fiber connecting ring 16 is arranged on the upper surface of the bottom piece 7, and a counterweight connecting ring 17 is arranged on the lower surface of the bottom piece 7.
A transmission shaft connecting hole 18 is formed in the middle of the nose piece 6, two second through holes 19 for accommodating the corresponding guide rails 9 are formed in two sides of the nose piece 6, a second mounting hole 20 for fixing the guide rails 9 is formed in a position, corresponding to the two second through holes 19, on one side surface of the bottom piece 7, a third mounting hole 21 for fixing the transmission shaft 11 is formed in a position, corresponding to the transmission shaft connecting hole 18, on one side surface of the bottom piece 7, and a second torsion fiber connecting ring 26 is formed in the lower surface of the nose piece 6.
And the two guide rails 9 are sleeved with an anti-bending piece 4, and the anti-bending piece 4 is arranged above the bottom piece 7.
The middle part of the bending-proof part 4 is provided with a torsional fiber through hole 22, and both sides of the bending-proof part 4 are respectively provided with a third through hole 13 for accommodating the guide rail 9.
A reinforcing member 5 is arranged on one side of the two upright frames 3.
The mounting mode of the test bed integral frame mechanism is as follows:
the base beam 1 and the vertical beam frame 3 of the test bed have the same structure, are made of aluminum section materials and have a hollow structure, so that the weight is reduced. Every base roof beam 1 and upright beam frame 3 four sides all open flutedly, put into base roof beam 1 and upright beam frame 3 and recess with the screw is reverse, and application connecting piece and nut can make the stable fixed in frame construction position. Screws are placed in the grooves in the vertical beam frame 3 in the reverse symmetry mode, the corner frames 2 and the nuts are used for being fixed with the base beam 1 in the horizontal direction, the fixing mode of the corner frames 2 and the base beam 1 is the same as that of the vertical beam frame 3 and the corner frames 2, the screws are placed in the grooves, then the nuts are used for screwing the screws, and the positions of the corner frames 2 on the beams are fixed. The relative position is adjusted according to the stable situation of placing the base beam 1 and the vertical beam frame 3. The middle part of the vertical beam frame is fixed with a reinforcing piece 5 by screws and nuts, so that the vertical beam frame 3 cannot rotate on a uniform horizontal plane by taking the angle frame 2 as an axis.
The internal structure of the frame mainly comprising the base beam 1 and the vertical beam frame 3 is designed as follows:
a guide rail 9 is arranged between the vertical beam frames 3, an anti-bending piece 4 and a bottom piece 7 are sleeved on the guide rail 9, and the anti-bending piece 4 and the bottom piece 7 determine the relative position of the guide rail 9 and are on the same horizontal plane; keeping the vertical state of the guide rail 9, and fixing the guide rail 9 by using 4 fixed supports 8 and fixed support accessories; fixing support 8 and fixing support annex use the little screw to screw up fixedly, and the centre can form the circular port, and the circular port is the part of placing guide rail 9.
Every 9 both sides of guide rail all through an angle frame 2 and the base beam 1 fixed connection of each side, increase its stability, prevent the lateral bending.
In order to ensure that the output shaft of the stepping motor 12 and the handpiece 6 cannot rotate relatively when connected through the transmission shaft 11 for working, the output shaft of the stepping motor 12, the transmission shaft 11 and the handpiece 6 have the specific structures as follows, the cross section of the output shaft of the stepping motor 12 is a regular hexagon, correspondingly, the inner section of the transmission shaft 11 is a regular hexagon, the outer section of the transmission shaft 11 is a circle with a short straight edge, and correspondingly, the inner section of the handpiece 6 is a circle with a short straight edge.
A working method of an adjustable torsion fiber driving test bed is characterized in that: comprises that
(1) Changing the spatial position of the bottom piece 7 according to the length of the fiber to be wound and twisted, so that the distance between the lower side of the head piece 6 driven by the stepping motor 12 at the upper end of the test bed and the upper side of the bottom piece 4 meets the length of the fiber 25 to be twisted;
(2) one end of the fiber 25 to be twisted is tied on a first twisted fiber connecting ring 16 on the lower surface of the head piece 6, the other end of the fiber passes through a twisted fiber through hole 22 in the middle of the bending-proof piece 4 and then is tied on a second twisted fiber connecting ring 26 on the upper surface of the bottom piece 7, and in order to ensure that the fiber 25 to be twisted is kept in a straight state, a counterweight 24 is connected to a counterweight connecting ring 17 on the lower surface of the bottom piece 7;
(3) the stepping motor 12 is started to enable the nose piece 6 to rotate and drive the fibers to twist, when the twisted fibers are wound to a certain limit, the bottom piece 7 is pulled, the height of the bottom piece 7 is changed, and the stepping motor 12 stops working until the fibers are completely twisted into a spiral shape;
(4) loosening the screws for fixing the guide rail 9 on the anti-bending piece 4 and the bottom piece 7, moving the guide rail 9 upwards, inserting the guide rail 9 into the second through hole 18 of the machine head piece 6, fixing the guide rail by the screws, opening a heating switch of the incubator 10 to heat the twisted fibers, and taking down the twisted fibers after the heat treatment is finished.
The test bed can be used for winding and driving various twisted fibers under the condition of meeting a certain length, and can also be used for uniformly heating the twisted fibers. The whole test bed is low in manufacturing cost, small in size and convenient to disassemble, assemble and transport, the height of the bottom piece can be increased or reduced to adapt to the torsion fibers with different lengths, the use is flexible, and the uniform heating of the torsion fibers can be realized.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The utility model provides an adjustable twists reverse fibre drive test bench which characterized in that: the device comprises a supporting device, a twisting device and a power device, wherein the supporting device comprises two upright beam frames (3), bottom beam seats (1) and supporting plates (23) which are arranged in parallel, the bottoms of the two upright beam frames (3) are fixed through the two bottom beam seats (1), the tops of the two upright beam frames (3) are connected through the supporting plates (23), a guide rail (9) is arranged on the inner side of each upright beam frame (3), and each guide rail (9) is connected with the upright beam frame (3) at the corresponding position through a fixed support (8);
the torsion device comprises a machine head piece (6), a bottom piece (7) and a counterweight (24), wherein the bottom piece (7) is sleeved on two guide rails (9), the bottom piece (7) is positioned under the machine head piece (6), one end of a fiber (25) to be twisted is fixed on the machine head piece (6), the other end of the fiber is fixed on the bottom piece (7), and the bottom piece (7) is connected with the counterweight (24);
the power device comprises a stepping motor (12) and a transmission shaft (11), an output shaft of the stepping motor (12) drives the transmission shaft (11) to operate, and the transmission shaft (11) penetrates through a support plate (23) to be connected with the handpiece (6);
an incubator (10) is arranged outside the supporting device.
2. The adjustable torsional fiber drive test stand of claim 1, wherein: the bottom piece (7) is provided with first through holes (14) for accommodating the guide rails (9), each guide rail (9) penetrates through one first through hole (14), the positions, corresponding to the two first through holes (14), of one side surface of the bottom piece (7) are respectively provided with a first mounting hole (15) for fixing the guide rails (9), the upper surface of the bottom piece (7) is provided with a first twisting fiber connecting ring (16), and the lower surface of the bottom piece (7) is provided with a counterweight connecting ring (17).
3. The adjustable torsional fiber drive test stand of claim 2, wherein: the middle of the machine head piece (6) is provided with a transmission shaft connecting hole (18), two sides of the machine head piece (6) are respectively provided with a second through hole (19) for accommodating a corresponding guide rail (9), one side surface of the bottom piece (7) is provided with a second mounting hole (20) for fixing the guide rail (9) at a position corresponding to the two second through holes (19), one side surface of the bottom piece (7) is provided with a third mounting hole (21) for fixing a transmission shaft (11) at a position corresponding to the transmission shaft connecting hole (18), and the lower surface of the machine head piece (6) is provided with a second torsion fiber connecting ring (26).
4. The adjustable torsional fiber drive test stand of claim 3, wherein: two prevent curved (4) of establishing on guide rail (9) the cover, prevent curved (4) setting in the top of bottom spare (7).
5. The adjustable torsional fiber drive test stand of claim 4, wherein: prevent curved piece (4) middle part and be equipped with the torsion fibre and pass hole (22), prevent curved piece (4) both sides and respectively set up a third through hole (13) that hold guide rail (9).
6. The adjustable torsional fiber drive test stand of any one of claims 1-5, wherein: and reinforcing members (5) are arranged on one sides of the two upright beam frames (3).
7. The adjustable torsional fiber drive test stand of claim 6, wherein: and two sides of each guide rail (9) are fixedly connected with the base beams (1) on the respective sides through an angle frame (2).
8. The adjustable torsional fiber drive test stand of claim 7, wherein: the cross section of the output shaft of the stepping motor (12) is a regular hexagon, and correspondingly, the inner section of the transmission shaft (11) is a regular hexagon.
9. The adjustable torsional fiber drive test stand of claim 8, wherein: the outer section of the transmission shaft (11) is circular with a short straight edge, and correspondingly, the inner section of the handpiece (6) is circular with a short straight edge.
10. The working method of the adjustable torsion fiber driving test bed according to claim 5, characterized in that: comprises that
(1) Changing the spatial position of the bottom piece (7) according to the length of the fibers to be wound and twisted, so that the distance between the lower side of the head piece (6) and the upper side of the bottom piece (4) driven by a stepping motor (12) at the upper end of the test bed meets the length of the fibers (25) to be twisted;
(2) one end of the fiber (25) to be twisted is tied on a first twisted fiber connecting ring (16) on the lower surface of the head piece (6), the other end of the fiber passes through a twisted fiber through hole (22) in the middle of the bending-proof piece (4) and then is tied on a second twisted fiber connecting ring (26) on the upper surface of the bottom piece (7), and in order to ensure that the fiber (25) to be twisted keeps a straight state, a counterweight (24) is connected to a counterweight connecting ring (17) on the lower surface of the bottom piece (7);
(3) the stepping motor (12) is started to enable the nose piece (6) to rotate and drive the fibers to twist, when the twisted fibers are wound to a certain limit, the bottom piece (7) can be pulled, the height of the bottom piece (7) is changed, and the stepping motor (12) stops working until the fibers are twisted into a spiral shape completely;
(4) loosening screws for fixing the guide rail (9) on the anti-bending piece (4) and the bottom piece (7), moving the guide rail (9) upwards, inserting the guide rail (9) into a second through hole (18) of the machine head piece (6), fixing the guide rail with the screws, opening a heating switch of the incubator (10) to heat the twisted fiber, and taking down the twisted fiber after the heat treatment is finished.
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CN201811031484.0A CN110879182A (en) | 2018-09-05 | 2018-09-05 | Adjustable torsion fiber driving test bed and working method thereof |
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CN201811031484.0A CN110879182A (en) | 2018-09-05 | 2018-09-05 | Adjustable torsion fiber driving test bed and working method thereof |
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CN101699260A (en) * | 2009-09-28 | 2010-04-28 | 郑州仕佳通信科技有限公司 | Fiber optic cable twist test equipment |
CN102156079A (en) * | 2011-05-16 | 2011-08-17 | 南京工程学院 | Metal wire torsion tester |
CN105181499A (en) * | 2015-09-23 | 2015-12-23 | 武汉纺织大学 | Multifunctional tester for torsional fatigue performance of fiber |
CN105372060A (en) * | 2014-08-28 | 2016-03-02 | 广州汽车集团股份有限公司 | Torsion test stand of driving shaft |
CN107121248A (en) * | 2017-06-20 | 2017-09-01 | 辽宁工业大学 | A kind of equation motorcycle race chassis torsion stiffness test stand and its test method |
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2018
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Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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CN101699260A (en) * | 2009-09-28 | 2010-04-28 | 郑州仕佳通信科技有限公司 | Fiber optic cable twist test equipment |
CN102156079A (en) * | 2011-05-16 | 2011-08-17 | 南京工程学院 | Metal wire torsion tester |
CN105372060A (en) * | 2014-08-28 | 2016-03-02 | 广州汽车集团股份有限公司 | Torsion test stand of driving shaft |
CN105181499A (en) * | 2015-09-23 | 2015-12-23 | 武汉纺织大学 | Multifunctional tester for torsional fatigue performance of fiber |
CN107121248A (en) * | 2017-06-20 | 2017-09-01 | 辽宁工业大学 | A kind of equation motorcycle race chassis torsion stiffness test stand and its test method |
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Application publication date: 20200313 |