CN219121871U - Torque transmission mechanism for dynamic torsion experiment - Google Patents
Torque transmission mechanism for dynamic torsion experiment Download PDFInfo
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- CN219121871U CN219121871U CN202223223944.4U CN202223223944U CN219121871U CN 219121871 U CN219121871 U CN 219121871U CN 202223223944 U CN202223223944 U CN 202223223944U CN 219121871 U CN219121871 U CN 219121871U
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Abstract
The utility model discloses a torque transmission mechanism for dynamic torsion experiments, which comprises a torque generating device, a pulse force transmission device and a charging adjusting device, wherein the torque generating device is arranged at a power input end of the pulse force transmission device and comprises a second positioning column, a mortise and tenon fixing mechanism and a charging piece, the mortise and tenon fixing mechanism and the charging piece are arranged on the second positioning column, and the mortise and tenon fixing mechanism is matched with the charging piece; the pulse force transmission device is rotationally connected with the charging piece through the protective sleeve and is matched with the power release assembly arranged on the front end face of the charging piece for use, and the tail end of the pulse force transmission device is connected with the incidence rod; the charging adjusting device is matched with the charging piece for use; the mechanism can effectively control the loading amount of explosive and ensure the purity of torque conversion through the arrangement of the torque generating device, the pulse force transmission device and the charging adjusting device, can avoid the interference of other shock waves, improves the experimental precision, and has the characteristics of reasonable structural design, simple operation, high safety and high measurement precision.
Description
Technical Field
The utility model belongs to the technical field of experimental equipment, and particularly relates to a torque transmission mechanism for a dynamic torsion experiment.
Background
The torque test is an experiment for detecting the shearing resistance characteristic of a sample in the torsion process, and the specific principle is that the sample is arranged on a torsion testing machine driven by a servo motor, so that the active chuck applies a torsion moment to the sample at a set rotation speed, and the shearing resistance characteristic of the sample is further tested;
in the prior art, in order to study the dynamic shear resistance of a sample, a classical split hopkinson torsion bar (SplitHopkinsonTorsionBar, SHTB) is generally used to study the shear resistance of the sample, and compared with other impact torsion loading modes, the explosion impact torsion loading has obvious advantages, in 1971, duffy proposed an explosion impact torsion loading mode different from pre-torque: the loading end of the incident rod is provided with a loading end, and the loading end is provided with a loading end; when loading, the two gunpowder bags are ignited simultaneously through the ignition cable, the impact force generated by explosion is equivalent to applying a pair of couples to the loading rod to form torsion waves, and the instantaneous loading of dynamic torsion load is completed, but the experiment still has the following defects:
1. the explosion impact load cannot be accurately controlled under the influence of a plurality of undetectable factors such as the components and the quantity of the explosive, the different detonating cord detonations and the like, so that the effective control of the torque load cannot be realized;
2. because the explosive is relatively large in impact, the rotating blades cannot be completely fixed after the explosive charging is completed, and the experimental equipment adopts the rotating blades in a single horizontal direction, so that the explosion impact wave is difficult to be completely converted into torque wave, and the experimental precision is seriously influenced;
3. the explosive explosion has larger destructive property, so that the danger in the experimental process is greatly increased;
therefore, there is a need to design a new torque transmission mechanism for dynamic torsion experiments to solve the above-mentioned problems in the prior art.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model aims to provide a torque transmission mechanism for dynamic torsion experiments, which can effectively control the loading amount of explosive and ensure the purity of torque conversion through the arrangement of a torque generating device, a pulse force transmission device and a charging adjusting device, can effectively avoid the interference of other shock waves, improves the experimental precision, and has the characteristics of reasonable structural design, simplicity in operation, high safety and high measurement precision.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
a torque transmission mechanism for dynamic torsion experiments, which comprises a torque generating device, a pulse force transmission device and a charging adjusting device,
the torque generating device is arranged at the power input end of the pulse force transmission device and comprises a second positioning column, a mortise and tenon fixing mechanism and a charging piece, wherein the mortise and tenon fixing mechanism and the charging piece are arranged on the second positioning column, and the mortise and tenon fixing mechanism and the charging piece are mutually matched for use;
the pulse force transmission device is rotationally connected with the charging piece through the protective sleeve and is matched with the power release assembly arranged on the front end face of the charging piece for use, and the tail end of the pulse force transmission device is connected with the incidence rod;
the charging adjusting device is matched with the charging piece for use.
Preferably, the charging adjusting device comprises a first positioning column and a transmission motor, wherein the transmission motor is fixedly arranged on a first baffle plate of the first positioning column, a telescopic adjusting bolt is arranged at the driving end of the transmission motor, and external threads are arranged on the telescopic adjusting bolt to be matched with a thread adjusting hole arranged at the tail part of the charging piece.
Preferably, the power release component is arranged on a mounting plate at the end part of the charging piece and comprises a charging bin, an impact warhead and a spark initiator,
the medicine filling bin is a hollow sleeve, and a vent hole is arranged on the medicine filling bin;
the impact warhead is arranged in the inner cavity of the medicine filling bin and is matched with an electromagnet arranged in the bottom of the medicine filling bin at the tail end of the medicine filling bin;
the spark initiator is arranged at the end part of the bottom of the explosive filling bin and is matched with the impact warhead for use, and an explosive filling section for filling cylindrical explosive is formed in the explosive filling bin.
Preferably, the vent hole is arranged on the side wall of the medicine filling bin at the rear end of the medicine filling section of the medicine filling bin and is communicated with the cavity in the medicine filling bin.
Preferably, the impact warhead is of a trapezoid column structure, one surface with a smaller radius of the impact warhead is matched with the electromagnet inwards, and the other surface with a larger radius is matched with the spark initiator outwards.
Preferably, the pulse force transmission device comprises a force transmission disc and a force transmission rod,
the force transfer disc is arranged at one end of the force transfer rod, and a plurality of high-strength steel baffles are symmetrically arranged on the force transfer disc in an annular shape and are matched with the mounting plate;
the dowel bar is arranged at the tail end of the dowel plate and is fixedly connected with the incident bar.
Preferably, the mortise and tenon fixing mechanism comprises a vertical positioning component and a horizontal positioning component which are mutually vertical, the vertical positioning component and the horizontal positioning component comprise square positioning columns, synchronous motors, positioning gears and supporting plates,
the supporting plates are symmetrically arranged on the outer sides of the second positioning columns, and synchronous motors are arranged at the end parts of the supporting plates;
the synchronous motors are symmetrically arranged on the supporting plates, a driving shaft is arranged between the two synchronous motors, and the positioning gear is arranged on the driving shaft;
the square positioning column is movably arranged on the positioning column and is matched with the positioning gear for use.
Preferably, the square positioning column is also symmetrically provided with meshing tooth grooves, and the meshing tooth grooves are mutually meshed with the positioning gears.
The beneficial effects of the utility model are as follows: the utility model discloses a torque transmission mechanism for dynamic torsion experiments, which is improved compared with the prior art in that:
the utility model designs a torque transmission mechanism for a dynamic torsion experiment, which comprises a torque generating device, a pulse force transmission device and a charging adjusting device, wherein when the torque transmission mechanism is used:
1. through setting up of the charge adjusting device, when in use, the telescopic adjusting bolt is driven to rotate through the transmission motor, and the telescopic adjusting bolt rotates to adjust the position of the charge piece on the second positioning column, so that the effective and equivalent charge filling in the power release assembly is facilitated, the influence of a plurality of undetectable factors such as explosive components and quantity can be avoided, and the problem that the effective control of torque load cannot be realized is solved;
2. the power release assembly is arranged on the mounting plate at the end part of the explosive loading piece, the power release assembly is matched with the pulse force transmission device to be used when the explosive loading device is used, torque power is generated through explosion of cylindrical explosive, the impact warhead is adopted to impact the baffle plate, other impact wave interference is avoided, experimental precision is effectively improved, and meanwhile, the complete conversion from explosion impact pulse to torque is realized through the combined design of the annular explosive filling bin and the annular baffle plate; the design of the air guide hole and the high-strength rigid protection cylinder prevents the harm caused by abnormal explosion, and improves the safety of the experimental device;
3. through mortise and tenon fixed establishment's setting, fix a position the powder charge piece when using, guaranteed the absolute fixed of explosive charge piece position in the explosion process, and then guarantee experimental accuracy, have structural design rationally, easy operation, security and measurement accuracy height's advantage.
Drawings
Fig. 1 is a schematic structural view of a hopkinson torsion bar.
FIG. 2 is a diagram illustrating the use of the torque transmitting mechanism for dynamic torque testing according to the present utility model.
FIG. 3 is a schematic diagram of a torque transmitting mechanism for dynamic torsion experiments according to the present utility model.
Fig. 4 is a schematic structural view of the charge adjusting device of the present utility model.
Fig. 5 is a front view of the mortise and tenon fastening mechanism of the present utility model.
Fig. 6 is a schematic view of the structure of the vertical positioning assembly of the present utility model.
Fig. 7 is a schematic view of the structure of the charge of the present utility model.
Fig. 8 is a side view of the charge of the present utility model.
Fig. 9 is a schematic view of the power release assembly of the present utility model.
Fig. 10 is an exploded view of the power release assembly of the present utility model.
Fig. 11 is a schematic structural view of the protection sleeve of the present utility model.
Fig. 12 is an exploded schematic view of the present utility model.
Wherein: 1. torque-generative devices, 11, first positioning post, 111, telescoping adjustment bolt, 112, first baffle, 12, mortise and tenon securing mechanism, 121, vertical securing assembly, 1211, square positioning post, 1212, synchronous motor, 1213, positioning gear, 1214, brace, 1215, meshing tooth slot, 122, horizontal securing assembly, 13, charge, 131, charge pocket, 132, impact bullet, 133, vent, 134, electromagnet, 135, mounting plate, 136, positioning post receptacle, 137, spark initiator, 138, cylindrical explosive, 139, charge pocket bottom, 130, threaded adjustment hole, 14, second positioning post, 2, impulse force transmission device, 21, impulse force transmission disc, 211, baffle, 22, dowel, 3, protective sleeve, 4, sample, 5, incident rod, 6, transmission rod, 7, drive motor.
Detailed Description
In order to enable those skilled in the art to better understand the technical solution of the present utility model, the technical solution of the present utility model is further described below with reference to the accompanying drawings and examples.
Example 1: a torque transmission mechanism for dynamic torsion experiments, which is shown with reference to figures 1-12, and comprises a torque generating device 1, a pulse force transmission device 2 and a charge adjusting device, wherein
The torque generating device 1 is arranged at the power input end of the pulse force transmission device 2 and comprises a second positioning column 14, and a mortise and tenon fixing mechanism 12 and a charging piece 13 which are arranged on the second positioning column 14, wherein the mortise and tenon fixing mechanism 12 and the charging piece 13 are mutually matched for use, and the charging piece 13 is positioned through the mortise and tenon fixing mechanism 12 when explosion power is released, so that the charging piece 13 is prevented from rotating;
the power input end of the pulse force transmission device 2 is rotationally connected with the charge piece 13 through the protective sleeve 3 and is matched with a power release assembly arranged on the front end face of the charge piece 13, the pulse force transmission device 2 is driven to rotate through the power release assembly when the pulse force transmission device is used, an incident rod 5 is fixedly arranged at the tail end of the pulse force transmission device 2, and the incident rod 5 is driven to rotate through the pulse force transmission device 2 to measure the dynamic shear mechanical properties of the sample 4;
the charging adjusting device is arranged at one end, far away from the pulse force transmission device 2, of the charging piece 13 and is used for adjusting the relative position of the charging piece 13 and the pulse force transmission device 2, so that the power release assembly is convenient to charge.
Preferably, in order to adjust the position of the charge 13 during use, the charge adjusting device is designed to include a first positioning column 11 and a driving motor 7, wherein the driving motor 7 is fixedly installed on a first baffle 112 at the top of the first positioning column 11, and a telescopic adjusting bolt 111 is arranged at the driving end of the driving motor 7, and an external thread is arranged on the telescopic adjusting bolt 111 to be matched with a thread adjusting hole 130 arranged at the tail of the charge 13, namely, during use, the telescopic adjusting bolt 111 is driven to rotate by the action of the driving motor 7, and the position of the charge 13 on a second positioning column 14 is adjusted by the rotation of the telescopic adjusting bolt 111, so that the charge is filled in the power release assembly.
Preferably, for use with the impulse force transmission device 2, to generate torque, the power release assembly is disposed on a mounting plate 135 at the end of the charge 13, including a charge reservoir 131, an impact bullet 132, and a spark initiator 137, where
The medicine filling bin 131 is a hollow sleeve fixedly installed on the installation plate 135, and the medicine filling bin 131 is provided with a vent hole 133 for ventilation;
the impact warhead 132 is arranged in the inner cavity of the medicine filling bin 131 and is matched with the electromagnet 134 arranged in the bottom 139 of the medicine filling bin at the tail end of the medicine filling bin 131, and the position of the impact warhead 132 in the inner cavity of the medicine filling bin 131 is positioned and fixed through the electromagnet 134 when in use;
the spark initiator 137 is disposed outside the end of the charge bin bottom 139 and cooperates with the impact warhead 132 to form a closed charge segment within the charge bin 131 for filling the charge segment with an equal amount of cylindrical explosive 138.
Preferably, the cylindrical explosive 138 is quantitatively prefabricated before the experiment, and the spherical concave at the bottom of the cylindrical explosive 138 is matched with the spark initiator 137, so that the spark initiator 137 can detonate the cylindrical explosive 138.
Preferably, the vent hole 133 is disposed on the side wall of the filling bin 131 at the rear part of the filling section, and is communicated with the cavity inside the filling bin 131, so as to discharge the gas generated after explosion.
Preferably, in order to form a sealed filling section in the filling bin 131, the impact warhead 132 is designed to be a trapezoid column structure, a smaller radius face of the impact warhead 132 is matched with the electromagnet 134 inwards, a larger radius face of the impact warhead 132 is matched with the spark initiator 137 outwards to form a sealed space in the filling bin 131, and the impact warhead 132 is matched with the electromagnet 134 for use, and the impact warhead 132 is made of a permanent magnetic material.
Preferably, to ensure the simultaneity of explosion in the test, the spark initiators 137 are designed to be connected in parallel, and the explosive is ignited and detonated.
Preferably, for use with the torque-generating device 1, the impulse force-transmitting device 2 is designed to convert the explosive force generated by the power-releasing assembly completely into the torque of the incident beam 5, and comprises a force-transmitting disc 21 and a force-transmitting beam 22, wherein
The force transmission plate 21 is integrally formed at one end of the force transmission rod 22, and a plurality of high-strength steel baffles 211 are symmetrically arranged on the force transmission plate 21 in a ring shape, and when in installation, the baffles 211 are mutually clamped with the mounting plate 135 and are matched with the impact warhead 132 for use;
the dowel 22 is arranged at the tail end of the dowel plate 21 and is fixedly connected with the incident rod 5.
Preferably, in order to ensure the safety of the experimental explosion process, the protection sleeve 3 is detachably arranged at the outer side of the connection part of the force transmission disc 21 and the explosive piece 13, and the torque generating device 1 is connected with the pulse force transmission device 2.
The use process and the use principle of the torque transmission mechanism for dynamic torsion experiment in the embodiment comprise:
1. filling: when the explosive filling device is used, the telescopic adjusting bolt 111 is driven to rotate through the transmission motor 7, the explosive loading part 13 is driven to withdraw leftwards, after the explosive loading part 13 withdraws leftwards, the electromagnet 134 at the bottom of the explosive filling bin 131 is adjusted to have reverse magnetic force, the impact warhead 132 slides outwards under the action of repulsive force, equal amounts of blocky explosive are respectively placed into the explosive filling bin 131, the magnetic force of the electromagnet 134 at the bottom of the explosive filling bin is changed into positive direction, the impact warhead 132 is placed, and the explosive is clamped in the explosive filling bin under the action of magnetic attraction, so that the explosive filling work is completed;
2. feeding into a preset position: the driving motor 7 is driven to work, the telescopic adjusting bolt 111 is driven to rotate, the charging piece 13 is driven to push to the right side, and the rotation is stopped when the charging piece is just jointed with the groove of the pulse force transmission device 2;
3. positioning: positioning the charging piece 13 by utilizing a mortise and tenon fixing mechanism 12;
4. explosion: when the spark blaster 137 connected in parallel is electrified, the power supply of the electromagnet 134 is cut off at the same time, and the impact warhead 132 is in a free state at the moment; the impact warhead 132 impacts the baffle 211 under the action of the explosion pulse, the circumferential explosion pulse is instantaneously converted into torque, and the torque is transmitted to the sample 4 by the incidence rod 5, so that the measurement of the dynamic shear resistance of the sample 4 is completed once.
Example 2: unlike embodiment 1, in order to ensure absolute fixation of the position of the charge 13 and thus experimental precision when the explosive power is generated by using the power release assembly to drive the force transmission disc 21 to rotate, the mortise and tenon fixing mechanism 12 is designed to include a vertical positioning assembly 121 and a horizontal positioning assembly 122, and the vertical positioning assembly 121 and the horizontal positioning assembly 122 are mutually perpendicular to form a cross mortise and tenon fixing structure to position the charge 13.
Preferably, the vertical positioning assembly 121 and the horizontal positioning assembly 122 each comprise a square positioning post 1211, a synchronous motor 1212, a positioning gear 1213 and a strut 1214, wherein
The supporting plate 1214 is symmetrically arranged at the outer side of the second positioning column 14, and an arc-shaped groove is arranged at the end part of the supporting plate 1214 to be matched with the synchronous motor 1212 for use, so that the synchronous motor 1212 is arranged;
the synchronous motors 1212 are fixedly arranged in the arc-shaped grooves, a driving shaft is arranged between the two symmetrically arranged synchronous motors 1212, the positioning gear 1213 is arranged on the driving shaft and matched with a positioning key arranged on the driving shaft to realize the fixed connection between the driving shaft and the positioning gear 1213, so that the coaxial rotation of the driving shaft and the positioning gear 1213 is ensured, and the positioning gear 1213 is driven to rotate through the synchronous motor 1212 when in use;
the square positioning column 1211 is movably arranged on the positioning column 14 and is matched with the positioning gear 1213 for use, and when in use, the square positioning column 1211 is driven to move along the positioning column jack 136 arranged on the charging piece 13 under the driving action of the synchronous motor 1212, so that the positioning of the charging piece 13 is realized, the absolute rest of the charging piece 13 is ensured, the impact load is ensured to be completely converted into torque, and the experimental precision is improved.
Preferably, in order to facilitate the rotation of the square positioning column 1211 by the synchronous motor 1212 to drive the square positioning column 1211 to move along the positioning column jack 136, the square positioning column 1211 is symmetrically provided with engaging tooth slots 1215, the engaging tooth slots 1215 are engaged with the positioning gear 1213, and the synchronous motor 1212 is used to drive the square positioning column 1211 to make telescopic movement along the square positioning column jack 136; meanwhile, for automatically controlling the process of the synchronous motor 1212, a pressure sensing piece is arranged at the tail end of the engaged tooth slot 1215 carved on the side wall of the square positioning column 1211, and the rotation of the synchronous motor 1212 is controlled by the pressure sensing piece.
The use process and the use principle of mortise and tenon fixing mechanism of this embodiment include:
in the positioning process of step 3 in embodiment 1, after the loading of the loading member 13 into the predetermined position is completed in step 2, the synchronous motor 1212 is started to move to drive the square positioning pillars 1211 to position the loading member 13, the square positioning pillars 1211 are locked inwards to reach the predetermined position, and the synchronous motor 1212 stops rotating to complete the operation of locking the loading member 13.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (7)
1. The utility model provides a torque transmission mechanism for dynamic torsion experiments which characterized in that: comprises a torque generating device, a pulse force transmission device and a charging adjusting device,
the torque generating device is arranged at the power input end of the pulse force transmission device and comprises a second positioning column, a mortise and tenon fixing mechanism and a charging piece, wherein the mortise and tenon fixing mechanism and the charging piece are arranged on the second positioning column, and the mortise and tenon fixing mechanism and the charging piece are mutually matched for use;
the pulse force transmission device is rotationally connected with the charging piece through the protective sleeve and is matched with the power release assembly arranged on the front end face of the charging piece for use, and the tail end of the pulse force transmission device is connected with the incidence rod;
the charging adjusting device is matched with the charging piece for use.
2. A torque-transmitting mechanism for dynamic torsion experiments as claimed in claim 1, wherein: the power release component is arranged on the mounting plate at the end part of the charging piece and comprises a charging bin, an impact warhead and a spark initiator,
the medicine filling bin is a hollow sleeve, and a vent hole is arranged on the medicine filling bin;
the impact warhead is arranged in the inner cavity of the medicine filling bin and is matched with an electromagnet arranged in the bottom of the medicine filling bin at the tail end of the medicine filling bin;
the spark initiator is arranged at the end part of the bottom of the explosive filling bin and is matched with the impact warhead for use, and an explosive filling section for filling cylindrical explosive is formed in the explosive filling bin.
3. A torque-transmitting mechanism for dynamic torsion experiments as claimed in claim 2, wherein: the vent hole is arranged on the side wall of the medicine filling bin at the rear end of the medicine filling section of the medicine filling bin and is communicated with the cavity in the medicine filling bin.
4. A torque-transmitting mechanism for dynamic torsion experiments as claimed in claim 2, wherein: the impact warhead is of a trapezoid column structure, one surface of the impact warhead with smaller radius is matched with the electromagnet inwards, and the other surface of the impact warhead with larger radius is matched with the spark initiator outwards.
5. A torque-transmitting mechanism for dynamic torsion experiments as claimed in claim 2, wherein: the pulse force transmission device comprises a force transmission disc and a force transmission rod,
the force transfer disc is arranged at one end of the force transfer rod, and a plurality of high-strength steel baffles are symmetrically arranged on the force transfer disc in an annular shape and are matched with the mounting plate;
the dowel bar is arranged at the tail end of the dowel plate and is fixedly connected with the incident bar.
6. A torque-transmitting mechanism for dynamic torsion experiments as claimed in claim 1, wherein: the mortise and tenon fixing mechanism comprises a vertical positioning assembly and a horizontal positioning assembly which are mutually perpendicular, the vertical positioning assembly and the horizontal positioning assembly comprise square positioning columns, synchronous motors, positioning gears and supporting plates,
the supporting plates are symmetrically arranged on the outer sides of the second positioning columns, and synchronous motors are arranged at the end parts of the supporting plates;
the synchronous motors are symmetrically arranged on the supporting plates, a driving shaft is arranged between the two synchronous motors, and the positioning gear is arranged on the driving shaft;
the square positioning column is movably arranged on the positioning column and is matched with the positioning gear for use.
7. The torque-transmitting mechanism for dynamic torsion testing according to claim 6, wherein: and the square positioning column is also symmetrically provided with meshing tooth grooves which are meshed with the positioning gears.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223223944.4U CN219121871U (en) | 2022-12-01 | 2022-12-01 | Torque transmission mechanism for dynamic torsion experiment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223223944.4U CN219121871U (en) | 2022-12-01 | 2022-12-01 | Torque transmission mechanism for dynamic torsion experiment |
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| Publication Number | Publication Date |
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| CN219121871U true CN219121871U (en) | 2023-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202223223944.4U Active CN219121871U (en) | 2022-12-01 | 2022-12-01 | Torque transmission mechanism for dynamic torsion experiment |
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| CN (1) | CN219121871U (en) |
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