CN2056890U

CN2056890U - Labour-saving spanner

Info

Publication number: CN2056890U
Application number: CN 89206767
Authority: CN
Inventors: 裘亦骍; 王韶笙; 张彝光
Original assignee: QINGHUA SCIENCE AND TECHNOLOGY SERVICE HANGZHOU
Current assignee: QINGHUA SCIENCE AND TECHNOLOGY SERVICE HANGZHOU
Priority date: 1989-05-03
Filing date: 1989-05-03
Publication date: 1990-05-09

Abstract

The utility model relates to a labor-saving spanner, which is a socket spanner for fastening and removing nuts and is especially suitable for removing automobile tires. The utility model uses a small tooth difference planetary gear speed reducer to reduce speed simultaneously has the characteristic of increasing torque; a handle and a sleeve barrel are correspondingly installed at two ends of the speed reducer. The utility model has the advantages of reasonable design and convenient carrying; an ordinary worker can freely remove nuts without depending on a boosting rod; the labor can be saved for 30 times more or less.

Description

Labour-saving spanner

The utility model is to be used for telescopic spanner fastening, the dismounting nut, is specially adapted to the motor vehicles re-type.

Come re-type with existing box spanner, can twist to get off because of the nut corrosion mostly, at this moment often need to help with long boosting-rod.As run into the restricted or staff's strength of condition of work hour, then seem very difficult.

The purpose of this utility model is to improve the deficiency of above-mentioned technology, and provides a kind of need not by means of boosting-rod, only can obtain a spanner through the moment of enhancing with standing handle, reaches the effect of laborsaving dismounting nut.

The utility model is to utilize ripe NN type planet gear speed reducer with small tooth difference to have the characteristics design that increases moment of torsion when slowing down to form, and input shaft of speed reducer links to each other with spanner, and output shaft links to each other with sleeve.Like this, on spanner, apply a medium moment, will on sleeve, produce the moment of an enhancing, greatly facilitate the dismounting nut.

Fig. 1 is a schematic diagram of the present utility model.

Now the utility model is further described in conjunction with Fig. 1.

Fixed handle or the ratchet handle of band Fang Xin are connected in eccentric shaft 1, the eccentric segment of axle is with bearing 2, bearing 2 matches with duplicate gear 3, the internal gear engagement of its cog 3a and upper shell 4, the internal gear engagement of its lower gear 3b and output shaft 5, the two ends section of the non-eccentricity of eccentric shaft 1 matches with upper shell and output shaft 5 by bearing 6 and 7 respectively, output shaft 5 is with bearing 8, one end and the upper shell 4 of lower shell 9 link into an integrated entity, its inner chamber matches with bearing 8, and the axle of output shaft 5 goes out end removable sleeve 10 is housed.When the operator pulls handle, drive eccentric shaft 1 and rotate, dress duplicate gear 3 is thereon rotatablely moved as planet, duplicate gear 3 respectively with the two internal gears engagement of top cylinder 4 and output shaft 5.Because the planetary motion of duplicate gear 3 is rotated output shaft 5 thereupon, and drive sleeve 10 rotations, reach the purpose of dismounting and fastening nut.Consider the characteristics of doughnut and use, the number of teeth of the cog 3a and upper shell 4 internal gears of duplicate gear 3 is chosen to be 20 and 22 respectively, and the number of teeth of lower gear 3b and output shaft 5 internal gears is respectively 18 and 20, and the eccentric amount e of eccentric shaft is 3.4mm.Lower shell 9 bottoms can also be provided with other, use with convenient.

The utility model is reasonable in design, and is easy to carry, can load and unload easily nut and former box spanner ratio with common staff's arm strength, and laborsaving about 30 times is a kind of desirable driver's tool.

Claims

1, a kind of dismounting, the labour-saving spanner of clamp nut comprises handle and sleeve 10, it is characterized in that described handle links together by a NN type planet gear speed reducer with small tooth difference and sleeve 10.

2, labour-saving spanner as claimed in claim 1 is characterized in that the number of teeth of internal gear of the cog 3a and the upper shell 4 of duplicate gear 3 is respectively 20 and 22, and the number of teeth of the internal gear of lower gear 3b and output shaft 5 is 18 and 20, and the eccentric amount e of eccentric shaft is 3.4mm.