CN208068140U

CN208068140U - Flexible torque spanner

Info

Publication number: CN208068140U
Application number: CN201820592995.9U
Authority: CN
Inventors: 张迎伟; 杨武成; 宋文学; 彭琰举; 孙俊茹; 王瑜; 任振锟
Original assignee: Xian Aeronautical University
Current assignee: Xian Aeronautical University
Priority date: 2018-04-24
Filing date: 2018-04-24
Publication date: 2018-11-09
Anticipated expiration: 2028-04-24

Abstract

The utility model discloses a kind of flexible torque spanners, driving device, spanner handle including sequentially connected driving end, for driving driving end and hand-held mechanism, the spanner handle includes the first terminal pad for being connected with driving device for being respectively arranged on its both ends and the second terminal pad for being connected with hand-held mechanism, first terminal pad is connect with the second terminal pad by a plurality of SMA, and the hand-held mechanism is equipped with the heating device for selectively being heated to each SMA；The flexible torque spanner of the utility model, since the first terminal pad is connect with the second terminal pad by a plurality of SMA, after startup heating device heats different SMA silks, since different SMA silks have different degrees of stretch, therefore spanner handle can realize a certain range of flexural deformation, i.e. spanner handle has flexible structure, can adjust the angle on demand, to meet the application of the operating modes such as pipeline, small space.

Description

Flexible torque spanner

Technical field

The utility model is related to spanner field more particularly to a kind of flexible torque spanners.

Background technology

It is threaded in extensive use in engineering goods, torque wrench is the common tool for ensureing connector fastening quality. Existing torque wrench generally comprises sequentially connected driving end, the driving device for driving driving end, spanner handle and holds Operating mechanism can not be adjusted the angle since spanner handle is rigid structure, and space adaptability is insufficient, cannot meet oil field, chemical industry Equal pipelines bend pipe torque operation.Marmem (Shape Memory Alloy, SMA) is that one kind varies with temperature and occurs The memory material of deformation, has that power to weight ratio is high, driving moment is big, the advantages such as simple in structure, has knot by the driver that SMA makes The features such as structure is compact, light-weight and high power density, is particularly adapted to microstructure and biomimetic features.

Utility model content

In view of this, the purpose of this utility model is to provide a kind of flexible torque spanner, pulling with flexible structure Handle can adjust the angle, and meet the application of the operating modes such as pipeline, small space.

The flexible torque spanner of the utility model, including sequentially connected driving end, for driving the driving of driving end to fill It sets, spanner handle and hand-held mechanism, the spanner handle includes for being connected with driving device for being respectively arranged on its both ends One terminal pad and the second terminal pad for being connected with hand-held mechanism, first terminal pad pass through more with the second terminal pad SMA connections, the hand-held mechanism are equipped with the heating device for selectively being heated to each SMA.

It is further improved as to above-mentioned technical proposal, SMA of the quantity is 4-8 items.

It is further improved as to above-mentioned technical proposal, a plurality of described SMA is uniformly distributed circumferentially.

It is further improved as to above-mentioned technical proposal, resetting spring is arranged with outside described SMA.

It is further improved as to above-mentioned technical proposal, is equipped at least between first terminal pad and the second terminal pad One mounting disc, the mounting disc are equipped with the mounting hole for passing through and installing for SMA.

It is further improved as to above-mentioned technical proposal, the quantity of the mounting disc is 3-5.

It is further improved as to above-mentioned technical proposal, the driving device is that the motor of electric drive or SMA drive Dynamic motor.

It is further improved as to above-mentioned technical proposal, first terminal pad and/or the second terminal pad are ring flange Structure.

It being further improved as to above-mentioned technical proposal, the hand-held mechanism includes the shell equipped with hand holding handle, The shell is equipped with for controlling the driving device and the control button of heating device；It is equipped in the driving device for detecting The torsion sensor of its output shaft torque value, the shell are equipped with for showing the aobvious of torque value that torsion sensor is detected Display screen.

It is further improved as to above-mentioned technical proposal, the shell is equipped with for converting solar energy to electric energy Solar panel, the solar panel is electrically connected with the accumulator being located in shell.

By above disclosure, the utility model has following advantageous effects：

The flexible torque spanner of the utility model, since the first terminal pad is connect with the second terminal pad by a plurality of SMA, After startup heating device heats different SMA silks, since different SMA silks stretch with different degrees of, Spanner handle can realize a certain range of flexural deformation, i.e. spanner handle has flexible structure, can adjust the angle on demand, to full The application of the operating modes such as sufficient pipeline, small space.

Description of the drawings

Fig. 1 is the stereogram of the utility model；

Fig. 2 is the stereogram of the spanner handle of the utility model.

Specific implementation mode

Below in conjunction with the attached drawing of the utility model, the technical scheme in the embodiment of the utility model is carried out clear, complete Site preparation describes；Obviously, the described embodiments are only a part of the embodiments of the utility model, instead of all the embodiments, It is obtained by those of ordinary skill in the art without making creative efforts based on the embodiments of the present invention Every other embodiment, shall fall within the protection scope of the present invention.

As depicted in figs. 1 and 2：The flexible torque spanner of the present embodiment, including sequentially connected driving end 101, for driving Driving device 102, spanner handle 103 and the hand-held mechanism 104 of wrench head 101, the spanner handle 103 include being respectively arranged on First terminal pad 105 for being connected with driving device 102 and second for being connected with hand-held mechanism 104 at its both ends Terminal pad 106, first terminal pad 105 are connect with the second terminal pad 106 by a plurality of SMA silks 107, the hand-held machine Structure 104 is equipped with the heating device (not shown) for selectively being heated to each SMA silks 107；Driving end 101 is for grasping Make threaded fastener；Driving device 102 can be the motor of electric drive or the motor of SMA drivings, as long as spanner can be realized First 101 rotation；For ease of installing and dismantling, first terminal pad, 105 and second terminal pad 106 can be ring flange Structure, connection tautness are high；The quantity of SMA silks 107 can as needed depending on, it is higher that quantity is more at most bent precision, such as The quantity of SMA silks 107 can be 4-8 items, and the present embodiment is preferably 6, while a plurality of SMA silks 107 are uniformly distributed circumferentially； Heating device may be, for example, a plurality of and 107 one-to-one resistance heater of SMA silks；Since the first terminal pad 105 and second connects It connects disk 106 to connect by a plurality of SMA silks 107, after startup heating device heats different SMA silks 107, due to difference SMA silks 107 have different degrees of flexible, therefore spanner handle 103 can realize a certain range of flexural deformation, i.e. spanner handle 103 have flexible structure, can adjust the angle on demand, to meet the application of the operating modes such as pipeline, small space.

Resetting spring 108 is arranged in the present embodiment, outside the SMA silks 107 (not to be reset spring 108 Fig. 2 shows position The SMA silks 107 of package, actually should all wrap up)；Resetting spring 108 not only contributes to protect SMA silks 107, The rigidity of 107 connection of SMA silks is improved, and SMA silks 107 can be promoted to restore former long by shrinking when SMA silks 107 stop heated, To Fast Restoration, response speed is improved.

In the present embodiment, at least one mounting disc 109 is equipped between first terminal pad, 105 and second terminal pad 106, The mounting disc 109 is equipped with the mounting hole for passing through and installing for SMA silks 107；The quantity of the mounting disc 109 is according to need It wants and sets, the SMA silks 107 the long, and the mounting disc 109 needed is also more, may be, for example, 3-5, the present embodiment is preferably 3；Peace Sabot 109 is conducive to keep stabilization and the positioning of SMA silks 107.

In the present embodiment, the hand-held mechanism 104 includes the shell 111 equipped with hand holding handle 110, the shell 111 It is equipped with the control button 112 for controlling the driving device 102 and heating device；It is equipped in the driving device 102 for examining The torsion sensor (not shown) of its output shaft torque value is surveyed, the shell 111 is equipped with for showing torsion sensor The display screen 113 of the torque value detected；Control operating member is integrated on shell 111, is manipulated convenient for user；This Outside, the shell 111 is equipped with the solar panel 114 for converting solar energy to electric energy, the solar cell Plate 114 is electrically connected with the accumulator (not shown) being located in shell 111, so as to using solar energy as power supply, effectively The energy is saved.

Meanwhile SMA silks 107 can be composite construction, which includes filament and the casing that is sleeved on outside filament, and casing is adopted It is made of flexible insulating material, and is filled with silica gel between filament and casing；Filament uses nickel-titanium shape memory alloy material system At；Silica gel improves heat dissipation and the cooling velocity of filament；Casing forms protection to internal filament and silica gel.

Finally illustrate, applies specific case herein and the principles of the present invention and embodiment are explained It states, the explanation of above example is only intended to the core concepts that help understands the utility model, are not departing from the utility model original In the case of reason, can also to the utility model, some improvement and modification can also be carried out, these improvement and modification also fall into the utility model Protection domain in.

Claims

1. a kind of flexible torque spanner, including sequentially connected driving end, the driving device for driving driving end, spanner handle and Hand-held mechanism, it is characterised in that：The spanner handle includes for being connected with driving device for being respectively arranged on its both ends One terminal pad and the second terminal pad for being connected with hand-held mechanism, first terminal pad pass through more with the second terminal pad SMA connections, the hand-held mechanism are equipped with the heating device for selectively being heated to each SMA.

2. flexible torque spanner according to claim 1, it is characterised in that：SMA of the quantity is 4-8 items.

3. flexible torque spanner according to claim 1, it is characterised in that：A plurality of the SMA are uniformly distributed circumferentially.

4. flexible torque spanner according to claim 1, it is characterised in that：It is arranged with resetting spring outside described SMA.

5. flexible torque spanner according to any one of claims 1 to 4, it is characterised in that：First terminal pad and the At least one mounting disc is equipped between two terminal pads, the mounting disc is equipped with the mounting hole for passing through and installing for SMA.

6. flexible torque spanner according to claim 5, it is characterised in that：The quantity of the mounting disc is 3-5.

7. flexible torque spanner according to any one of claims 1 to 4, it is characterised in that：The driving device is electric power The motor of motor or the SMA driving of driving.

8. flexible torque spanner according to any one of claims 1 to 4, it is characterised in that：First terminal pad and/or Second terminal pad is flange plate structure.

9. flexible torque spanner according to any one of claims 1 to 4, it is characterised in that：Hand-held mechanism packet Include the shell equipped with hand holding handle, the shell is equipped with for controlling the driving device and the control button of heating device；The drive The torsion sensor for detecting its output shaft torque value is equipped in dynamic device, the shell is equipped with for showing that torsion senses The display screen for the torque value that device is detected.

10. flexible torque spanner according to claim 9, it is characterised in that：The shell is equipped with for by sunlight It can be converted into the solar panel of electric energy, the solar panel is electrically connected with the accumulator being located in shell.