A kind of electric capstan
[technical field]
The utility model relates to a kind of electric capstan, relates in particular to the structure of the speed reduction gearing in a kind of electric capstan.
[background technology]
Along with economic, social development, no matter be in daily life or in production operation, the driver is also more and more higher for the requirement that is equipped with auxiliary accessories on automobile or other motor-driven transportation devices, electric capstan is as auxiliary accessories commonly used, can realize drawing weight, drag multiple operations such as vehicle, commercial production, open-air drive particularly to save oneself, rescue mutually etc. under the situation play considerable effect, therefore at overland vehicle, electric capstan to be installed on producing with car just very necessary as draw gear.
Capstan winch is mainly by the internally-powered source, retarder, composition such as reel and drg, in electric capstan, its internally-powered source is the motor of installing in the capstan winch, during electric capstan work, thereby driven by motor reductor rotating drum, drive is wrapped in the steel rope on the reel, finish the operation that drags weight and vehicle, this shows, retarder plays extremely important effect in electric capstan, retarder can pass through diameter with the higher rotation speed of motor output, the gear transmission that modulus is different becomes required slow speed of revolution, and the height of retarder efficient then is a very important factor of decision capstan winch performance quality.In the prior art, retarder in the electric capstan is usually by three grades of unsteady NGW type satellite gear transmissions, planetary wheeling assembly at different levels supports by planet frame plate separately, and the planet frame plate adopts integral casting forming, no longer carry out fine limit work, thereby the precision of planet frame plate is relatively low, directly influences the efficient and the performance of capstan winch.Driving efficiency is on the low side, generally below 50%.Self-plugging rivet riveted joint or easy cross riveted joint are adopted in connection between the planet frame plate, and Joint strenght is lower.Reel and planet frame plate adopt three concavo-convex teeth groove to pass and connect, and owing to the defective that exists on its structure, have influenced the work efficiency of electric capstan.
[utility model content]
The purpose of this utility model is to provide a kind of electric capstan, and this electric capstan has changed the structure of the inner retarder of existing electric capstan, has solved the problem that efficient is lower, driving efficiency is on the low side of the capstan winch that the defective that exists on the existing electric capstan structure causes; The degree of being connected firmly that has also solved simultaneously the low electric capstan that causes of Joint strenght between the retarder inner planet frame plate of electric capstan is poor, is pulling the problem that is damaged easily when weight moves.
For realizing goal of the invention of the present utility model, the technical solution adopted in the utility model is: a kind of electric capstan, by electric machine assembly, brake equipment, reel and retarder assembly connect and compose, described brake equipment is placed on the transmission shaft of described electric machine assembly, described reel is connected with described transmission shaft I by described brake equipment, also be connected with the retarder assembly on the described transmission shaft I, described retarder assembly is the level Four gear transmission, wherein one, two, three grades is the external tooth engaged transmission, level Four is the transmission of high precision NGW type, described transmission shaft II adopts antifriction-bearing box, one, three grades is the helical teeth transmission, fourth stage pinion carrier adopts antifriction-bearing box location, the pin shaft hole of pinion carrier and bearing pin precision-fit.
Further, also be provided with the bearing pin II that connects usefulness between described pinion carrier.
Improved, described reel adopts spline to connect with being connected of level Four pinion carrier.
Improved, be provided with two cover drgs in the described brake equipment, when carrying out towage, can adopt different drgs according to the different needs of traction.
Further, described two groups of drgs are twin cam bipyramid drum brake mechanism I and screw mandrel awl drum brake mechanism II.
Further, described twin cam bipyramid drum brake mechanism I is installed in the reel, and fixedly brake disc, torsion spring connect and compose described drg I by interior hexagonal transmission shaft, interior hexagonal cam, interior circular hole cam, brake wheel.
Further, described hexagonal transmission shaft is constituted by input shaft and output shaft.
Further, described screw mandrel awl drum brake mechanism II by ratchet brake cover, ratchet, screw mandrel, fixedly brake disc, movable brake disc, locating bush connect and compose.
The utility model has changed the structure of existing electric capstan, the gear-driven retarder of original NGW third-level planetary is being changed into the level Four gear transmission, when changing the mounting means of level Four planet frame plate, also the corresponding construction of reel and brake equipment is also improved, it is lower to have solved existing electric capstan efficient and performance, the problem of reliable transmission difference, degree of being connected firmly is undesirable, carries out the defective that easily is damaged when mobile pulling weight; It is lower also to have solved simultaneously between the retarder inner planet frame plate of electric capstan Joint strenght.The irrational problem of inner structure, this electric capstan is owing to adopted said structure, and volume is little, compact conformation, dependable performance, the driving efficiency height is applicable under multiple bad border, condition and finishes towage, looks good with on the vehicle of multiple model and uses.
[description of drawings]
With reference to the accompanying drawings the technical solution of the utility model is further specified below:
Fig. 1 is the structural representation of a kind of electric capstan of the utility model;
Fig. 2 is the structural representation of a kind of electric capstan retarder of the utility model assembly;
Fig. 3 is the structural representation of twin cam bipyramid drum brake mechanism I in a kind of electric capstan of the utility model;
Fig. 4 is the structural representation of screw mandrel awl drum brake mechanism II in a kind of electric capstan of the utility model.
[specific embodiment]
A kind of electric capstan, by electric machine assembly 1, brake equipment, reel 3 and retarder assembly 4 connect and compose, described brake equipment is placed in outside the transmission shaft I11 of described electric machine assembly 1, described reel 3 is connected with described transmission shaft I11 by described brake equipment, also be connected with retarder assembly 4 on the described transmission shaft I11, described retarder assembly 4 is the level Four gear transmission, one, two, tertiary gear is the external tooth engaged transmission, the level Four gear is the transmission of high precision NGW type, described transmission shaft II43 adopts antifriction-bearing box, adopt described antifriction-bearing box to carry out transmission, can reduce friction effectively, improve driving efficiency, in retarder assembly 4 described in the utility model, one, three grades is the helical teeth transmission, can be in the stationarity of efficient that effectively improves the high speed level and running, effectively raise the tooth bending strength of low speed turbine stage, thereby in limited space, can transmit bigger torque, fourth stage planet frame plate adopts the antifriction-bearing box location, when satisfying degree of being connected firmly, accurate localization more can be provided, also be provided with on the described pinion carrier pin shaft hole and with the bearing pin I of pin shaft hole precision-fit, to guarantee the reliable and stable of retarder transmission.Also be provided with the bearing pin II that connects usefulness between described pinion carrier, described bearing pin II adopts bolt, and not only degree of being connected firmly is good, also is convenient to dismounting, maintenance simultaneously.Described reel 3 adopts spline to connect with being connected of level Four pinion carrier, and transmitting torque is big, transmission efficiency is high.Described brake equipment is provided with two groups of drgs, described two groups of drgs are respectively twin cam bipyramid drum brake mechanism I5 and screw mandrel awl drum brake mechanism II6, can adopt the drg of corresponding different structure in the use as required, described twin cam bipyramid drum brake mechanism I5 is installed in the reel 3, by interior hexagonal transmission shaft 51, interior hexagonal cam 52, interior circular hole cam 53, brake wheel is brake disc 54 fixedly, torsion spring 55 compositions such as grade, simple in structure, big and the scalable of braking torque, be useful on the electric capstan that has higher requirements for the intensity that pulls weight and use, described drg also can adopt screw mandrel awl drum brake mechanism II6, described screw mandrel awl drum brake mechanism II6 is by ratchet brake cover 61, ratchet 62, screw mandrel 63, fixedly brake disc 64, movable brake disc 65, locating bush 66 connects and composes, adopt screw mandrel awl drum brake mechanism II6, volume is little, compact conformation is adapted at using for pulling on the not high electric capstan of requirement of strength.
The utility model has changed the structure of existing electric capstan, the gear-driven retarder of original NGW third-level planetary is being changed into the level Four gear transmission, when changing the mounting means of level Four planet frame plate, also the corresponding construction of reel and brake equipment is also improved, it is lower to have solved existing electric capstan efficient and performance, the problem of reliable transmission difference, degree of being connected firmly is undesirable, carries out the defective that easily is damaged when mobile pulling weight; It is lower also to have solved simultaneously between the retarder inner planet frame plate of electric capstan Joint strenght.The irrational problem of inner structure, this electric capstan is owing to adopted said structure, volume is little, compact conformation, dependable performance, the driving efficiency height, be applicable in multiple bad border, finish towage under the condition, look good with on the vehicle of multiple model and use, and in the utility model, brake equipment has partly set up two groups of different drgs separately, can require according to the difference of towage in use to dispose accordingly, make Applicable scope of the present utility model more extensive, good solution drive routine, production operation, vehicle is open-air in danger saves oneself when rescuing mutually to the requirement of electric capstan.
It is evident that the specific embodiment only is to of the present utility model further specifying and non-limiting, any employing the present utility model spirit and only the utility model structure is made simple transformation is still in protection domain of the present utility model.