CN211371082U

CN211371082U - Overload protection coupling

Info

Publication number: CN211371082U
Application number: CN201921224048.5U
Authority: CN
Inventors: 娄竞月
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-31
Filing date: 2019-07-31
Publication date: 2020-08-28
Anticipated expiration: 2029-07-31

Abstract

An overload protection coupling adopts a split connection mode, and abandons rigid screw connection and installation coupling. The input shaft and the output shaft can be completely separated after the installation is finished. The coupler adopts a magnetic coupling design, and the coupler automatically slips after exceeding the coupling torque, so that the rear-stage equipment is protected. The coupler is provided with a moment adjusting screw rod, and the moment of the safety threshold is set by changing the coupling torque. The step of disassembling the traditional coupler screw is omitted when the equipment is overhauled and treated, and only the motor foundation screw needs to be disassembled. And continuing to carry out the next maintenance work.

Description

Overload protection coupling

Technical Field

The utility model relates to a mechanical engineering technical field, in particular to overload protection shaft coupling.

Background

Couplings on electric equipment on the market are all mechanically hard-linked. When the machine is in failure, is stuck to be incapable of rotating, is twisted into foreign matters or has a safety accident, the motor is in overload operation. The motor is burnt out either to damage the mechanical parts of the equipment or even to cause the safety accident of personnel injury. How to ensure the equipment to stably run in normal production and the motor can not be burnt out under overload when an accident happens. And after the clothes are twisted into the equipment, the safety accident can not happen when the redundant torque is used for winding the working personnel. On the premise of safe production, a coupling device with adjustable torque is needed for modern production of driving protection and navigation protection.

SUMMERY OF THE UTILITY MODEL

The utility model provides an overload protection shaft coupling for reduce the probability that equipment damaged.

In order to solve the problem that above-mentioned background art provided, the utility model provides an overload protection shaft coupling, the shaft coupling includes input shaft and shell, the input shaft uses the key-type connection with motor output shaft, shaft coupling input shaft and shell integrated into one piece, the three recess of terminal surface evenly distributed in the shaft coupling, still include slider and lead screw, the slider have with lead screw complex internal thread, the slider is located the recess, the fixed magnet that sets up on the slider, the lead screw sets up along the recess central line, lead screw and slider can slide along the recess, change magnet and shaft coupling axis distance, increase or reduce coupling torque.

Preferably, the input shaft is provided with a positioning hole, the positioning hole is perpendicular to the axis of the coupler, the screw rod is installed in the positioning hole, and the adjusting end of the screw rod is flush with the circular arc surface of the input shaft.

Preferably, the small bevel gear is coaxially and fixedly arranged on the screw rod, the large bevel gear is coaxially and fixedly arranged on the input shaft, the small bevel gear is meshed with the large bevel gear, the large bevel gear can be driven to rotate by rotating any one screw rod, and the other two screw rods can be driven to rotate by the large bevel gear, so that the synchronous internal and external movement of the magnet is realized, and the torque is changed.

Preferably, the input shaft rotates to drive the magnet arranged in the coupling end face to rotate synchronously, and the input shaft and the output shaft are coupled and rotate by the magnetic force.

The utility model has the advantages that:

the transmission torque can only be normally used below the set torque. The coupler can slip when the torque is larger than the set torque. The shaft coupling still keeps the biggest torque of setting for and transmits for next stage equipment, the utility model aims at providing a can adjust the coupling torque of setting for, has safety protection's shaft coupling again. The accidents of personnel injury and disability caused by equipment and the accidents of equipment caused by mechanical reasons are avoided. Reduce the injury of personnel and reduce the cost of spare parts input.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

The technical solution of the present invention is further described in detail by the accompanying drawings and examples.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments 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 view of the overall structure of the present invention;

fig. 2 is a front view of the middle coupling of the present invention;

fig. 3 is a side sectional view of the middle coupling of the present invention;

FIG. 4 is a front view of the fitting structure of the middle screw rod and the coupling of the present invention;

fig. 5 is a side sectional view of the matching structure of the middle screw rod and the shaft coupling of the present invention.

Wherein, 10-coupler; 11-a reduction gearbox; 12-a motor; 13-a groove; 1-an input shaft; 2-big bevel gear; 3-small bevel gear; 4-a screw rod; 5-a magnet; 6-a slide block; 7-small taper key; 8-clamp spring; 9-output shaft.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

As shown in fig. 1-5, the utility model provides an overload protection shaft coupling, the shaft coupling includes input shaft and shell, shaft coupling input shaft 1 uses the key-type connection with motor output shaft, shaft coupling input shaft and shell integrated into one piece, the three recess of terminal surface evenly distributed in the shaft coupling, still include slider and lead screw, the slider have with lead screw complex internal thread, the slider is located the recess, the fixed magnet that sets up on the slider, it is equipped with magnet 5 to inlay the riveting on slider 6, the lead screw sets up along the recess central line, lead screw and slider can slide along the recess, change magnet and shaft coupling axis distance, increase or reduce coupling torque, the shaft coupling adopts diamagnetic material preparation, the shaft coupling material can be the stainless steel, copper, aluminium, plastics.

Preferably, the small bevel gear is coaxially and fixedly arranged on the screw rod, the large bevel gear is coaxially and fixedly arranged on the input shaft, the small bevel gear is meshed with the large bevel gear, the large bevel gear can be driven to rotate by rotating any one screw rod, and the other two screw rods can be driven to rotate by the large bevel gear, so that the synchronous internal and external movement of the magnet is realized, and the torque is changed. The large bevel gear 2 and the mounting shaft which is designed and reserved in the center of the input shaft 1 are sleeved together. The large bevel gear 2 can rotate freely. And the snap spring 8 is used for fixing to prevent the large bevel gear 2 from jumping out.

The input shaft 1 rotates to drive the magnet 5 arranged in the coupling end face to rotate synchronously. The magnetic force causes the input shaft 1 to rotate in coupling with the output shaft 9.

The output shaft 9 is connected with the input shaft of the gear box or the input shaft of the next-stage equipment through a key.

The utility model adopts the technical proposal that: the coupler adopts a split connection mode, and abandons rigid connection installation coupling. The input shaft and the output shaft can be completely separated in operation. The coupler adopts a magnetic coupling design, and the coupler automatically slips after exceeding the coupling torque, so that the rear-stage equipment is protected. The coupling is designed with a torque adjusting screw rod, the coupling torque is changed to set a safe threshold torque, and the transmission torque can only be normally used below the set torque. The coupler can slip when the torque is larger than the set torque. The shaft coupling still keeps the biggest torque of setting for and transmits for next stage equipment, the utility model aims at providing a can adjust the coupling torque of setting for, has safety protection's shaft coupling again. The accidents of personnel injury and disability caused by equipment and the accidents of equipment caused by mechanical reasons are avoided. Reduce the injury of personnel and reduce the cost of spare parts input.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. The utility model provides an overload protection shaft coupling, a serial communication port, the shaft coupling includes input shaft and shell, the input shaft uses the key-type connection with motor output shaft, shaft coupling input shaft and shell integrated into one piece, the three recess of terminal surface evenly distributed in the shaft coupling, still include slider and lead screw, the slider have with lead screw complex internal thread, the slider is located the recess, the fixed magnet that sets up on the slider, the lead screw sets up along the recess central line, lead screw and slider can slide along the recess, change magnet and shaft coupling axis distance, increase or reduce coupling torque.

2. The overload protection coupling according to claim 1, wherein the input shaft is provided with a positioning hole, the positioning hole is arranged perpendicular to the axis of the coupling, the lead screw is arranged in the positioning hole, and the adjusting end of the lead screw is flush with the circular arc surface of the input shaft.

3. The overload protection coupling according to claim 1, wherein the lead screw is coaxially and fixedly provided with a small bevel gear, the input shaft is coaxially and fixedly provided with a large bevel gear, the small bevel gear is meshed with the large bevel gear, the large bevel gear is driven to rotate by rotating any one of the small bevel gears of the lead screw, and the other two lead screws are driven to rotate by the large bevel gear, so that the magnets synchronously move inwards and outwards to change torque.

4. The overload protection coupling according to claim 1, wherein the input shaft rotates to synchronously rotate the magnets mounted in the coupling end surfaces, and the magnetic force causes the input shaft and the output shaft to rotate in a coupled manner.