JPS63272773A - Wheel support mechanism of crane, etc. - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a wheel support mechanism such as a lane, which is suitable for use in equalizing the wheel pressure of a plurality of wheels.

(Prior Art) Conventionally, in cranes and the like, a balancer as shown in FIG. 4 has been used to equalize the wheel pressures of a plurality of wheels. According to this, as the number of wheels increases, the balancer structure becomes more complicated and becomes less economical.

(Problem of the Invention) An object of the present invention is to provide a wheel support mechanism for a crane or the like that uses eccentric wheels and a link mechanism to equalize wheel pressure and has a simplified balancer structure.

(Means for solving the problem) The wheel axles installed in parallel are used as eccentric axes, and the torque is generated by the load of the two wheels, and the rod connecting the two axles is used to balance the torque and ultimately equalize the wheel pressure. It is characterized by the following.

(Example) The configuration of the present invention will be explained using FIGS. 1 to 3, taking as an example the case where the number of wheels is four. In the figure, reference numeral 1 denotes a rail, and a wheel 2 supported so as to run on the rail 1 is rotatably fitted to a wheel axle 4 via a bearing 3. Wheel axle 4
Both ends 4A are eccentric e with respect to the wheel fitting part 4B,
It is rotatably supported by the boss portion 5a of the balancer 5.

The tip of the torque arm 6A fixed to the shaft end of the wheel axle 4 is mutually connected via a rod pin 7 to a torque arm 6B attached to an adjacent wheel axle 4 by a balance rod 8. Reference numeral 9 denotes a balancer pin that connects the balancer 5 to a leg portion 10 of a crane or the like.

(Function) As configured as described above, the wheel loads F□ and F2 produce torques T and T2 due to the eccentric action of the wheel shaft 4, respectively, and these two torques T1. T2 is replaced by the tension f of the balance rod 8 via the torque arm 6 and rod pin 7, so that T1=T, and finally F□=F2. This eliminates the difference in wheel pressure between the wheels 2 caused by unevenness of the rail 1, etc., and equalizes the wheel pressure.

(Effects) As described above, according to the present invention, a balancer is no longer required to equalize the load on two wheels, and for example, for four wheels, the structure that conventionally required three sets of balancers (see Fig. 4) was replaced with one set of balancers. This can be realized with a balancer of 1, the structure can be made simple and small, and the purpose of the invention can be achieved reliably.

[Brief explanation of drawings]

FIG. 1 is a front view when the present invention is applied to a crane leg with four wheels. FIG. 2 is a view taken along the line ■-■ in FIG. 1. FIG. 3 is an explanatory diagram of the action. FIG. 4 is a front view showing the conventional structure. In the figure; 1 rail 2 wheel 3 bearing 4 wheel axle 5 balancer 5a (balancer) boss part 6
Torque arm 7 Rod pin 8 Balance rod 9 Balancer pin lO Crane leg or higher

Claims (1)

[Claims] The wheel shafts arranged in parallel are used as eccentric shafts, torque is generated by the two wheel loads, and the torque is balanced by a rod connecting both shafts, ultimately equalizing the wheel pressure. Wheel support mechanism for cranes, etc.