JPS6015249A - Driving device for truck for electric motor car - 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 Application of the Invention] The present invention is characterized in that, in a drive device for a railway vehicle, the space occupied by the power transmission device is made as small as possible by using a hollow shaft small gear and a gear coupling. The present invention relates to a parallel Cardan drive.

[Background of the invention]

Cardan drives using conventional gear couplings are
As shown in FIG. 1, a main motor 2 is fixed to a bogie frame 1, a gear coupling 4 is provided to an armature shaft 3, and two sets of small gear bearings 5 are fitted to the gear coupling 4. A small gear 6 is connected thereto. On the other hand, two sets of canine gear bearings 9 and a large gear 10 are fitted onto an axle 8 having a pair of wheels 7, and the small gear 6 and large gear 10 are fitted into the gear box 11 so as to fit into the gear box 11 properly. The gear box 11 is suspended from the truck frame 1 by a suspension device 12. By configuring the drive device in this way, the relative displacement between the wheel axle 8 and the main electric motor 2, which occurs due to the starting/stopping of the main motor 2 and the axle 8 being elastically supported by the bogie frame 1, can be controlled. As shown in FIG. 2, the movement is allowed by two pairs of flexible joint pinions 13 built into the gear coupling 4, so that displacements occurring in the drive system can be absorbed.

17 However, in order to absorb the displacement that occurs in the drive system,
The gear coupling 4 should be relatively large, but if the main motor 2 has a large capacity or the gauge is small, a method using a gear coupling is good for both vibration absorption and power transmission, and is also effective for driving equipment. However, it has the disadvantage that it does not hold true in terms of space.

There are other examples that apply gear couplings, but all of them require a relatively large space for the driving force transmission device between the main motor 2 and the small gear 6, and the permissible relative displacement between the main motor 2 and the axle 8 is limited. It had the disadvantage of being small.

[Object of the Invention] The object of the present invention is to use a hollow pinion gear to reduce the track direction dimension of the drive device as much as possible in order to use a gear coupling that is good for vibration absorption and power transmission. The purpose is to enable the application of a drive device using a gear coupling even to a large-capacity main motor or a small gauge.

[Summary of the invention]

The present invention provides an arrangement in which an armature shaft of a main motor fixed to a bogie frame is arranged parallel to the axle, a hollow small gear is engaged with a large gear fixed to the axle, and a hollow part inside the hollow small gear is engaged with a large gear fixed to the axle. ,
A sleeve inscribed with the flexible joint pinion fitted to the armature shaft is installed in the hollow pinion, and another flexible joint pinion is fitted to the other end of the sleeve, and the flexible joint pinion is fitted into the sleeve. is inscribed in the hollow pinion shaft.

[Embodiments of the invention]

An embodiment of the present invention will be explained in detail with reference to FIG. Third
The figure shows a plan cross section of the drive device of the present invention, in which a flexible joint pinion 13 is fitted into the armature shaft 3 of the main motor 2, and the flexible joint pinion 13 is fitted into the hollow pinion 14. Another flexible joint pinion 16 is fitted on the shaft end side of the sleeve 15, which is inscribed in the installed sleeve 15, and the flexible joint pinion/16 is inscribed in the hollow small gear 14. The driving force is transmitted to the hollow small gear 14.

On the other hand, two sets of canine gear bearings 9 and a large gear 10 are fitted to the axle 7 as in the conventional case, and a hollow small gear 14 is fitted to the gear box 11.
and a large gear 10 are installed at a certain distance to ensure good meshing, and one end of the gear box 11 is suspended from the truck frame 1 by a suspension device 12.

The sleeve 5 is further provided with a spring 17 between the sleeve 15 and the hollow pinion 14 in order to improve stability during high-speed rotation, and a spring 18 between the armature shaft 3 and the hollow pinion 14. has been established.

Further, the flexible joint pinion 13, 16 is sealed by an elastic seal body 19 and a seal plate 20 so that the oil necessary for lubrication does not leak toward the hollow small gear 14 and the large gear 10.

The drive device configured in this manner enables a relatively large relative displacement between the axle 7 and the main motor 2 as shown in FIG. 2 by means of the two flexible joint pinions 13 and 16, and smoothly transmits the power transmission. Not only that, but also the gear coupling dimension a shown in Fig. 1 can be omitted, so
This drive device can be applied even in the case of a large-capacity main motor 2 and a small gauge.

FIG. 4 shows another embodiment of the present invention, in which the electric machine shaft 3' is lengthened in the axial direction so that the fitting force with the flexible joint pinion 13' can be increased, and the shaft end side of the sleeve 15' At,
A flexible joint pinion 13' is inscribed in the sleeve 15', and another flexible joint pinion 16' is provided on the main motor 2 side of the sleeve 15', and is inscribed in the hollow pinion 14'. With this configuration as well, the occupied dimension a of the gear coupling shown in FIG. 1 can be omitted as in FIG. 3, resulting in a drive device that is short in the axial direction.

〔Effect of the invention〕

According to the present invention, it is possible to reduce the dimension between the shafts of the drive device, thereby achieving the remarkable effect that the drive device using a gear coupling can be applied even to a large-capacity main motor or a small gauge. can.

[Brief explanation of the drawing]

Fig. 1 is a plan sectional view of a parallel cardan drive device using a conventional gear coupling, Fig. 2 is a diagram of a modified operation of the gear coupling, and Fig. 3 is a drive device according to an embodiment of the present invention. FIG. 4 is a plan sectional view of a drive device showing another embodiment of the present invention. 1... Bogie frame, 2... Main electric motor, 3, 3'...
Armature shaft, 4... Gear coupling, 5... Small gear bearing, 6... Small gear, 8... Axle, 9... Canine gear bearing, 10... Large gear, 11. ...Gear box, 13.1
3', 16, 1.6'...Flexible joint pinion, 14
．． 14'...Hollow small gear, 15.15'...Sleeve. Agent Patent Attorney Akio Takahashi v2 illustrations 3 illustrations

Claims (1)

[Scope of Claims] 1. The armature shaft of the main motor fixed to the bogie frame is arranged parallel to the axle, and a hollow small gear is meshed with a large gear fixed to the axle. In the hollow part, a sleeve inscribed with the flexible joint pinion fitted to the armature shaft is disposed in the hollow pinion, and another flexible joint pinion is fitted to the other end of the sleeve, and the flexible joint pinion is fitted into the armature shaft. A drive device for an electric vehicle bogie, characterized in that a joint pinion is inscribed within the hollow small gear shaft. 2. After driving the trolley for an electric vehicle according to claim 1, wherein a spring is provided between the sleeve and the hollow pinion and between the sleeve and the armature shaft. [Agency. 3. Claim 1 is characterized in that both ends of the hollow pinion are sealed so that the lubricating oil of the two sets of flexible joint binions does not flow out to the hollow pinion and the canine gear. A drive device for an electric vehicle trolley.