CN205423587U

CN205423587U - Torque limiter

Info

Publication number: CN205423587U
Application number: CN201520835607.1U
Authority: CN
Inventors: 杨毅; 郭瑞; 王海渝
Original assignee: Nanjing Kongshan Xinyu Environmental Protection Technology Co Ltd
Current assignee: Nanjing Kongshan Xinyu Environmental Protection Technology Co Ltd
Priority date: 2015-10-27
Filing date: 2015-10-27
Publication date: 2016-08-03
Anticipated expiration: 2025-10-27

Abstract

The utility model discloses a torque limiter, include: the initiative disc, the rotatory drive assembly of drive initiative disc is fixed in the magnet on the initiative disc, installs closing coil and the rotatory driven disc of companion initiative disc corresponding to the magnet. The utility model provides a torque limiter, through magnetic transmission, not only the control limit moment of torsion is come to the multiple mode of accessible, and because the transmission of this device has non -contact and simplification, thus there is the noise little, zero friction, advantages such as easy maintenance.

Description

A kind of torque limiter

Technical field

Relate to a kind of torque transmission device, a kind of torque limiter.

Background technology

Current has torque limiter miscellaneous on the market, but most actuating device is all to use traditional contact kind of drive, such as friction type torque limiter, apply pressure by disk spring to friction plate, when moment of torsion exceedes setting value, between making active and passive side refer to, produce friction slip, disengage moment of torsion and can make stepless changing within the specific limits by graduated disc, but slip time is unsuitable long, there is abrasion, it is adaptable to discontinuity, impact are transshipped.And for example ball-type torque limiter, built-in precise ball mechanism, when moment of torsion exceedes the moment of setting value, make active and passive transmission disengage, response time 1-3 millisecond, but component manufactures precision, and cost is high.For another example aerodynamic moment limiter, pneumatic control torque limiter, built-in precise ball mechanism, when moment of torsion exceedes the moment of setting value, make active and passive transmission disengage, need also exist for high-precision manufacturing process and high cost.It is high that prior art not yet solves cost, and abrasion is big, the shortcoming that regulation peak torque is inconvenient.

Utility model content

For solving the deficiencies in the prior art, the purpose of this utility model is to provide a kind of torque limiter, by magnetic drives, carrys out control limit moment of torsion not only by various ways；And owing to the transmission of this device has untouchable and simplification, therefore there is noise little, without advantages such as friction, easy maintenance.

In order to realize above-mentioned target, this utility model adopts the following technical scheme that:

A kind of torque limiter, including: actively disk, drive the driving assembly of actively disc rotary, be fixed on the magnet on active disk, the closing coil corresponding to magnet the driven disk in company with actively disc rotary are installed.

Aforesaid a kind of torque limiter, drives assembly composition to have: rotational power source, rotational power source is rotated and is fixed on the driving shaft of actively disk, be fixed on the driven shaft of driven disk.

Aforesaid a kind of torque limiter, also includes: housing；Housing is provided with the breach accommodating driven shaft.

Aforesaid a kind of torque limiter, also includes: the bearing being connected between housing and driven shaft.

Aforesaid a kind of torque limiter, the overlapping number of turn of closing coil is the most, and torque transfer limits value is the biggest.

Aforesaid a kind of torque limiter, magnet is the most with the logarithm of closing coil, and torque transfer limits value is the biggest.

Aforesaid a kind of torque limiter, magnet is the nearest with the distance of closing coil, and torque transfer limits value is the biggest.

Aforesaid a kind of torque limiter, actively the speed discrepancy between disk and driven disk is the biggest, and moment of torsion transmission maximum is the biggest.

Aforesaid a kind of torque limiter, magnet strength is the biggest, and moment of torsion transmission maximum is the biggest.

Aforesaid a kind of torque limiter, magnet is permanent magnet, or the electric magnet of adjustable magnetic field intensity.

Of the present utility model have the beneficial effect that this utility model provides a kind of torque limiter, by arranging magnet on active disk, driven disk is installed closing coil, understanding driven disk by Lenz's law can be with active disk rotating in same direction, and when driven disk stops operating because of fault, actively disk still may proceed to rotate, rotational power source still can maintain the unlikely damage of rotation, to reach to prevent the purpose of overload, simultaneously can control limit moment of torsion in several ways.Owing to the transmission of this device is untouchable and simplification, therefore there is noise little, without advantages such as friction, easy maintenance.

Accompanying drawing explanation

Fig. 1 is the sectional view of a kind of embodiment of the present utility model；

Fig. 2 is the schematic diagram of this utility model actively a kind of embodiment of disk, driven disk；

Fig. 3 is the schematic diagram of a kind of embodiment of this utility model closing coil；

Fig. 4 is the schematic diagram of a kind of embodiment of this utility model magnet.

The implication of reference in figure:

1 housing, 2 driven shafts, 3 driving shafts, 4 active disks, 5 driven disks, 6 closing coils, 7 magnets, 8 bearings.

Detailed description of the invention

Below in conjunction with the drawings and specific embodiments, this utility model made concrete introduction.

A kind of torque limiter, including: actively disk 4, drive the driving assembly that actively disk 4 rotates, be fixed on the magnet 7 on active disk 4, the closing coil 6 corresponding to magnet 7 is installed and in company with the driven disk 5 that actively disk 4 rotates.Drive assembly composition to have: motor, driven by motor rotate and be fixed on the driving shaft 3 of actively disk 4, be fixed on the driven shaft 2 of driven disk 5.By arranging magnet 7 on active disk 4, driven disk 5 is installed closing coil 6, from the principle of Lenz's law, when magnet is by when moving to just position to the closing coil center of circle at a distance, magnetic flux through closing coil 6 increases, closing coil 6 will rotate to the direction stoping its magnetic flux to increase, i.e. in company with actively disk 4 rotating in same direction, when magnet is by when being just located away from closing coil to the closing coil center of circle, magnetic flux through closing coil 6 reduces, closing coil 6 is by the direction motion stoping its magnetic flux to reduce, same with active disk 4 rotating in same direction.And drive driven shaft 2 to rotate with the angular velocity being same as driven disk 5 in the process, and then reach the effect of actuating device.Actively disk 4, driven disk 5, closing coil 6 use nonferromugnetic material, closing coil 6 to be electric conductors.

When driven shaft 2 cannot rotate for some reason; it can drive driven disk 5 to stop operating; but driving shaft 3 still can be rotated further with actively disk 4 under the drive of motor this moment; at this moment torque value reaches default maximum safety value; and keep constant; thus can avoid the loss of electric machine or other mechanical failure, and then reach the effect of overload protection.

A kind of torque limiter, also includes: housing 1；Housing 1 is provided with the breach accommodating driven shaft 2；Bearing 8 it is provided with between housing 1 and driven shaft 2.8 position-limiting actions of bearing.

Use magnetic drives of the present utility model, can be by multiple method control limit moment of torsion；Method one, in the case of magnetic field is identical, the overlapping number of turn of increase and decrease closing coil 6, the overlapping number of turn of closing coil 6 is the most, and moment of torsion transmission maximum is the biggest；Method two, increase and decrease magnet 7 and the quantity of closing coil 6, magnet 7 is the most with the quantity of closing coil 6, and moment of torsion transmission maximum is the biggest；Method three, regulation magnet 7 and the spacing of closing coil 6, magnet 7 is the nearest with the distance of closing coil 6, and moment of torsion transmission maximum is the biggest；Method four, regulates the rotating speed of driving shaft 3 rotating speed, i.e. regulation actively disk 4, and actively disk 4 is the fastest with the relative rotation speed of driven disk 5, and moment of torsion transmission maximum is the biggest；Method five, controls magnet 7 intensity, and magnet 7 intensity is the biggest, and moment of torsion transmission maximum is the biggest.

This utility model provides a kind of torque limiter, by arranging magnet 7 on active disk 4, driven disk 5 is installed closing coil 6, understanding driven disk 5 by Lenz's law can be with active disk 4 rotating in same direction, and when driven disk 5 stops operating because of fault, actively disk 4 still may proceed to rotate, motor still can maintain the unlikely damage of rotation, to reach to prevent the purpose of overload, simultaneously can control limit moment of torsion in several ways.Owing to the transmission of this device is untouchable and simplification, therefore there is noise little, without advantages such as friction, easy maintenance.

Of the present utility model ultimate principle, principal character and advantage have more than been shown and described.Skilled person will appreciate that of the industry, above-described embodiment limits this utility model, the technical scheme that the mode of all employing equivalents or equivalent transformation is obtained the most in any form, all falls within protection domain of the present utility model.

Claims

1. a torque limiter, it is characterized in that, including: actively disk, drive the driving assembly of above-mentioned active disc rotary, it is fixed on the magnet on above-mentioned active disk, the closing coil corresponding to above-mentioned magnet the driven disk in company with above-mentioned active disc rotary are installed.

A kind of torque limiter the most according to claim 1, it is characterised in that above-mentioned driving assembly composition has: rotational power source, above-mentioned rotational power source be rotated and be fixed on the driving shaft of above-mentioned active disk, be fixed on the driven shaft of above-mentioned driven disk.

A kind of torque limiter the most according to claim 1, it is characterised in that also include: housing；Above-mentioned housing is provided with the breach accommodating above-mentioned driven shaft.

A kind of torque limiter the most according to claim 3, it is characterised in that also include: be connected to the bearing between above-mentioned housing and driven shaft.

A kind of torque limiter the most according to claim 1, it is characterised in that the overlapping number of turn of above-mentioned closing coil is the most, and torque transfer limits value is the biggest.

A kind of torque limiter the most according to claim 1, it is characterised in that above-mentioned magnet is the most with the logarithm of closing coil, and torque transfer limits value is the biggest.

A kind of torque limiter the most according to claim 1, it is characterised in that above-mentioned magnet is the nearest with the distance of closing coil, and torque transfer limits value is the biggest.

A kind of torque limiter the most according to claim 1, it is characterised in that the speed discrepancy between above-mentioned active disk and driven disk is the biggest, moment of torsion transmission maximum is the biggest.

A kind of torque limiter the most according to claim 1, it is characterised in that above-mentioned magnet strength is the biggest, moment of torsion transmission maximum is the biggest.

A kind of torque limiter the most according to claim 1, it is characterised in that above-mentioned magnet is permanent magnet, or the electric magnet of adjustable magnetic field intensity.