CN202937753U

CN202937753U - Constant speed device for machines

Info

Publication number: CN202937753U
Application number: CN 201220567371
Authority: CN
Inventors: 赵则昂
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-10-21
Filing date: 2012-10-21
Publication date: 2013-05-15
Anticipated expiration: 2022-10-21

Abstract

The utility model relates to a constant speed device for machines. The constant speed device comprises a constant speed device bracket, an adjusting scale, an adjusting screw, a speed limiting rod, a speed limiting contact, a constant speed device shaft, a power sprocket, a hanging scaffold, centrifugal hammer handles, centrifugal hammers, a pull rod and a speed limiting disc, when overspeed power is transmitted to the power sprocket, the hanging scaffold, the centrifugal hammer handles and the centrifugal hammers are driven by the constant speed device shaft to rotate in a synchronous acceleration manner, the centrifugal hammers move outwards and upwards, the speed limiting disc is driven to move upwards by the pull rod, the speed limiting disc is contacted with the speed limiting contact to generate resistance through friction, the larger the overspeed is, the bigger the resistance is, and centrifugal force generated by mechanical overspeed is converted into resistance to be counteracted so as to achieve the purpose of constant speed.

Description

A kind of mechanical constant-rate device

Technical field

The utility model relates to a kind of mechanical Constant-Speed Unit, is specially adapted to require the machinery of constant speed, controls in its running because load reduces a kind of mechanical constant-rate device that causes speed to increase.

Background technique

At present, known mechanical Constant-Speed Unit, be to utilize gravity inertial technology, mechanical gain feedback technique, electron controls technology etc. to realize the constant speed purpose, has respectively fast permanent poor effect, Applicable scope limitation, complex structure, the deficiency involved great expense.

Summary of the invention

The deficiency existed in order to overcome known mechanical Constant-Speed Unit, it is a kind of that the utility model provides, can be to requiring the machinery of constant speed, the speed that reduces to cause due to load in running increases, and realizes the mechanical constant-rate device of accurately controlling.

The technical scheme in the invention for solving the technical problem is: secured adjusted scale on the constant-rate device support, on regulation scale by the fixing speed limit bar of adjusting screw, fixing speed limit contact on the speed limit bar, connect the constant-rate device axle on the constant-rate device support, stationary power gear and hanging scaffold on the constant-rate device axle, on hanging scaffold, symmetrical place connects respectively centrifugal hammer handle, connect centrifugal hammer and pull bar on centrifugal hammer handle, connect the speed limit dish on pull bar, the speed limit dish is applied on the constant-rate device axle, when hypervelocity power conducts in power gear, drive hanging scaffold by the constant-rate device axle, centrifugal hammer handle and centrifugal hammer synchronously accelerate rotation, centrifugal hammer outwards moves upward, driving the speed limit dish by pull bar moves up, speed limit dish and speed limit contact, friction produces resistance, the larger resistance that exceeds the speed limit is larger, the centrifugal force that mechanical overspeed protection control is produced changes into resistance and is cancelled, reach the constant speed purpose.

The beneficial effects of the utility model are: constant speed is accurate, simple in structure, manufactures economical.

The accompanying drawing explanation

This figure is the utility model schematic diagram of structure

In figure: 1, power gear, 2, the constant-rate device axle, 3, hanging scaffold, 4, centrifugal hammer handle, 5, centrifugal hammer, 6, pull bar, 7, the speed limit dish, 8, the speed limit contact, 9, the speed limit bar, 10, adjusting screw, 11, regulation scale, 12, the constant-rate device support

Embodiment

Below in conjunction with drawings and Examples, the utility model is described in further detail:

Secured adjusted scale 11 on constant-rate device support 12, pass through fixedly speed limit bar 9 of adjusting screw 10 on regulation scale 11, fixing speed limit contact 8 on speed limit bar 9, connect constant-rate device axle 2 on constant-rate device support 12, stationary power gear 1 and hanging scaffold 3 on constant-rate device axle 2, on hanging scaffold 3, symmetrical place connects respectively centrifugal hammer handle 4, connect centrifugal hammer 5 and pull bar 6 on centrifugal hammer handle 4, connect speed limit dish 7 on pull bar 6, speed limit dish 7 is applied on constant-rate device axle 2, when hypervelocity power conducts in power gear 1, drive hanging scaffold 3 by constant-rate device axle 2, centrifugal hammer handle 4 and synchronous acceleration of centrifugal hammer 5 are rotated, centrifugal hammer 5 outwards moves upward, driving speed limit dish 7 by pull bar 6 moves up, speed limit dish 7 contacts with speed limit contact 8, friction produces resistance, the larger resistance that exceeds the speed limit is larger, the centrifugal force that mechanical overspeed protection control is produced changes into resistance and is cancelled, reach the constant speed purpose.

Claims

1. a mechanical constant-rate device is characterized in that: secured adjusted scale on the constant-rate device support, and on regulation scale, by the fixing speed limit bar of adjusting screw, fixing speed limit contact on the speed limit bar connects the speed limit dish on pull bar, and the speed limit dish is applied on the constant-rate device axle.