JPS60128002A - Truck wheel - Google Patents

Abstract

PURPOSE:To reduce slip of a truck wheel which rolls on a circular track, on the rail thereof by splitting the wheel in the width direction thereof into a plurality of parts so that the parts may turn independently in close contact with each other. CONSTITUTION:A wheel 2 is splitted into three parts in the direction of the width thereof as that the individual parts turn independently in close contact with each other. When the wheel 2 rolls on the circular track, the internal and external parts with respect to a rail run at different speeds, however, since the wheel 2 is divided into three parts, they roll independently, thereby reducing the slip ratio to one third of the conventional ratio. The number of the parts is inversely proportional to the slippage so that the more the number thereof is increased, the more the slippage can be reduced.

Description

[Detailed description of the invention] The present invention relates to improvements in wheels for bogies.

As shown in Fig. 1, a downhill space cooling system having a circular track rail (01) causes slippage between the rail (01) and the wheels of a bogie (O2) rolling on it, causing the wheels to slip. The problem arises that the treads of the tires wear out. This is the rails (
01) is a circular orbit, the circumferential speed difference vJP between the center position in the width direction (and both ends (B) and (G) of the rail (01))
That is, the circumferential velocity of each part is V, πDN/60.
VB. -71"CD-1) N/60-r: This is because slipping occurs. The test piece shown in Figure 3 (1) (
8450 induction hardened wheels, d-501,49,5
cIIL, or 47.5cIIL, e -10(+
1 or Figure 3 (according to the results of testing with NN-222RP (see Figure 2) using an IO test piece (S45C induction hardened wheel, dw 50cm, gm 5cIL), the slip rate ε-V, /VAv increases, the amount of wear increases, and it has been found that this effect is very large.
There is an urgent need to reduce this slippage. Note that N is the rotational speed (rpm) and D is the circular orbit diameter (wx).
, Jt rail width (m), vA, VB, ■.

is the slip velocity (1111/JF).

The present invention satisfies the above-mentioned requirements, and includes a wheel for a bogie that rolls on a circular track rail, in which the same wheel is divided into a plurality of parts in the wheel width direction, and each part is rotated separately while being in close contact with each other. The present invention relates to a wheel for a truck characterized by being supported by an axle, and the object thereof is to provide an improved wheel for a truck that can reduce slippage on the rail and reduce the amount of wear.

Next, the wheel for a bogie of the present invention will be explained using an embodiment shown in Fig. 4.5.6. (1) is a circular track rail, (2) is a wheel, (3) is a shaft, and (4) is a shaft. Support plate, (
5) is a thrust bearing, (6) is a trolley, and (7) is a bushing.The wheel (2) is divided into three parts in the width direction of the wheel, and each is connected to a shaft (3) so that they rotate separately. Supported. Note that a thrust bearing (5) is installed between the wheel (2) and the shaft (3) to prevent wear.

The truck wheel of the present invention is configured as described above, and can achieve the following effects. That is, when the wheels (2) roll on the circular track rail (1), a speed difference occurs between the inside and outside of the rail (1). The larger the wheel width, the larger the difference, so in order to reduce the slippage that occurs, the wheel (2) is divided into multiple parts (in the example, it is divided into six parts), and each wheel (2) is rotated separately. We are making it possible to
The speed difference can be reduced, and the slip rate is only 4 compared to conventional one-piece wheels. That is, the slip rate decreases in inverse proportion to the number of divisions.

Although the present invention has been described above with reference to embodiments, it goes without saying that the present invention is not limited to such embodiments, and that various design modifications can be made without departing from the spirit of the present invention. .

[Brief explanation of drawings]

Figure 1 is a plan view showing a conventional trolley, Figure 2 is an explanatory diagram showing the test results of a conventional one-piece wheel, Figure 6 (I) (Ii)
is a front view showing a test piece of the same type wheel, FIG. 4 is a plan view schematically showing a wheel for a truck according to the present invention, FIG. 5 is an enlarged front view taken along the arrow V-V line in FIG. 6 is an enlarged side view taken along the line VI-Vl in FIG. 4. FIG. (1)...Circular track rail, (2)...Wheel, (3)
...shaft, (6) ...carriage. Sub-agent: Patent attorney Shigefumi Okamoto and 3 people Figure 1 Party Figure 2 Sparency rate ε (%)

Claims (1)

[Claims] A wheel for a bogie that rolls on a circular track rail, characterized in that the same wheel is divided into a plurality of pieces in the wheel width direction, and each is supported by a shaft so that they rotate separately while being in close contact with each other. Wheel.