CN2187122Y - Non-symmetrical semiaxle castor - Google Patents

Abstract

The utility model provides a non-symmetrical semi-axle universal castor which is composed of a roller and a steering axle. A plane ball bearing of the steering axle of the existing universal castor is changed into the axle sleeve structure of a semi-axle. Meanwhile, a roller bearing is changed into the axle sleeve structure of the semi-axle. The utility model is characterized in that the roller of the universal castor is composed of a hemisphere roller with roller edges and a hemispheroid with a roller axle which are combined together in a convenient locking mode. A steering axle sleeve is fixedly combined with the hemispheroid in a whole. Meanwhile, the steering axle and the steering axle sleeve are formed in a convenient locking mode. An overall structure forms a dissymmetrical structure. Therefore, compared with the present universal castor, the utility model has the advantages of great holding force, firmness, durability, flexible and convenient turning, simple structure, convenient assembly and disassembly, etc.

Description

Non-symmetrical semiaxle castor

The utility model relates to cardan wheel, particularly a kind of asymmetric semiaxis cardan wheel.

The cardan wheel that circulates is on the market limit owing to its structure at present, and the diameter of roller shaft and steering shaft is all less, so bearing force is also little.The plane ball bearing of main shaft that in addition turns to usefulness structurally is again the balance pivot of cardan wheel upholder frame except turning to function.Because the gap, ball often from the side limit, gap tumbles out, damages and turns to malfunctioning etc. thereby form steering shaft.There are defectives such as poor lubrication, dismounting inconvenience, life-span weak point simultaneously.

The purpose of this utility model provides a kind of, will have cardan wheel steering shaft plane ball bearing now, changes the semiaxis axle sleeve structure into, supports the force thereby can strengthen, and turns to again flexibly, and easy disassembly is lubricated, the asymmetric semiaxis cardan wheel that increases the service life.

Technical solution of the present utility model is: described roller is made of the hemisphere roller (1) on band roller limit and the hemisphere (2) of band roller shaft, be positioned at a steering column jacket of top captive joint (4) of hemisphere (2) simultaneously, this axle sleeve and steering shaft (3) are sockets, steering shaft (3) directly and the thing frame be bolted to connection.

Roller shaft of the present utility model is the semiaxis axle sleeve structure, and the axle rotation of roller (1) on hemisphere (2) forms forward movement.And steering column jacket (4) forms axial motion around steering shaft (3) rotation.

The utility model is that it is campaign-styled to change axle sleeve into, thereby has strengthened the intensity and the life-span of steering shaft with traditional symmetrical expression cardan wheel rotating shaft plane ball bearing of main shaft.Axial limiting when simultaneously axle sleeve being moved is designed to two hemisphere axle sleeve structures of civilian dress locking-type, thereby is very easy to the interpolation of lubricant, has also improved the steering flexibility and the impregnability of this cardan wheel simultaneously.In addition, the roller shaft of this cardan wheel and steering shaft are the non-perpendicular axis of antarafacial, therefore compare with steering shaft antarafacial vertical axis with traditional cardan wheel roller shaft, and effective steering torque that its identical steering effort produces, the steering torque of this cardan wheel is bigger.

Below in conjunction with accompanying drawing the utility model is illustrated.

Fig. 1 is a structural profile scheme drawing of the present utility model;

Fig. 2 is branch body component roller (1) scheme drawing of Fig. 1;

Fig. 3 is branch body component hemisphere (2) scheme drawing of Fig. 1;

Fig. 4 is branch body component steering shaft (3) scheme drawing of Fig. 1;

Fig. 5-Fig. 8 is each angle divertical motion scheme drawing of the present utility model.

As shown in Figure 1: asymmetric semiaxis cardan wheel, constitute roller by the hemisphere roller (1) on band roller limit and the hemisphere (2) of band roller shaft, be positioned at a steering column jacket of top captive joint (4) of hemisphere (2) simultaneously, this axle sleeve is socketed on the steering shaft (3) of captiveing joint with the thing frame.The roller shaft bearing and the steering shaft bearing of this cardan wheel are the semiaxis axle sleeve structure, and the axle rotation of its roller (1) on hemisphere (2) forms forward movement, and steering column jacket (4) forms divertical motion around being fixed on steering shaft on the thing frame (3) rotation.

The utility model is as common cardan wheel, can be widely used in all packaged type furniture, office chair, market shopping cart, hotel's dining car, factory floor pony truck, hospital and move fields such as sick bed and Medicine delivery cart.

Claims (2)

1, a kind of asymmetric semiaxis cardan wheel, form by roller and steering shaft, it is characterized in that: described roller is made of the hemisphere roller (1) on band roller limit and the hemisphere (2) of band roller shaft, be positioned at a steering column jacket of top captive joint (4) of hemisphere (2) simultaneously, this axle sleeve and steering shaft (3) are sockets, and steering shaft (3) is directly captiveed joint with the thing frame.

2, asymmetric semiaxis cardan wheel according to claim 1, it is characterized in that: described roller shaft is the semiaxis axle sleeve structure, the axle rotation of roller (1) on hemisphere (2) forms forward movement, and steering column jacket (4) forms divertical motion around steering shaft (3) rotation, and its overall structure is a unsymmetric structure.

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