JPH0655920U - Suspension device for railway vehicle power unit - Google Patents

Abstract

(57) [Abstract] [Purpose] The flange portion 11 provided on the output shaft side end surface of the frame of the traction motor 1 and the flange portion 21 provided on the small gear portion of the gear box 2 of the gear device are fastened by fastening members. , The main electric motor is configured to be supported by the gear device in a cantilever manner, and in the power unit for a railway vehicle in which the main electric motor and the gear device are integrated, the device structure and the handling are simplified. [Construction] A railway vehicle power unit in which a main motor and a gear device are integrated has a part of a suspension device mounting seat using a gear box flange portion 21, and a suspension device mounting seat 23 as another part. The gear box is made to project from the gear box in correspondence with the flange portion 21, and is connected to a pin 9 provided between the gear box flange portion 21 and the suspension device mounting seat by means of a rubber bush 7 or the like via a gear box. By suspending 2 from the bogie 6, support is performed in consideration of the weight distribution of the entire power plant, and this structure simplifies the support mechanism and reduces the weight of the entire device.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a suspension device for a power unit for a railroad vehicle in which a main motor and a gear device are integrated.

[0002]

[Prior art]

 Recently, a flange portion provided on the output shaft side end surface of the frame of the traction motor and a flange portion provided on the small gear portion of the gear box of the gear unit are fastened together with a fastening member to cantilever the traction motor to the gear unit. A power plant for a railway vehicle, which is configured as described above and has a main motor and a gear unit integrated with each other, has been developed and used. As a result, the shaft of the small gear of the gear device and the shaft of the main motor can be integrated, and the flexible joint between the small gear shaft and the main motor shaft can be omitted. Therefore, the power plant for a railway vehicle can be downsized. FIG. 4 is a plan view showing a main part of a conventional power unit for a railway vehicle of this type, and FIG. 5 is a side view seen from a gear unit side with wheels removed.

A large gear (not shown) is fixed to an axle 5 to which wheels 4 are fixed at both ends, and a large gear and a small gear (not shown) that meshes with the large gear are accommodated in the gear. The box 2 is rotatably supported on the axle 5 by bearings, and at the other end, a suspension seat 22 protruding from the gear box 2 and a dolly 6 are mounted on a suspension device 3 whose both ends are supported by elastic bodies such as rubber bushes. More supported.

The flange portion 11 provided on the end surface of the main motor 1 on the shaft end side is engaged with the flange portion 21 provided on the small gear portion of the gear box 2, so that the main motor 1 is cantilevered on the gear box 2. It is supported. In this way, the power unit in which the main electric motor 1 and the gear box 2 of the gear unit are integrated is supported by the axle 5 and the carriage 6. As shown in FIG. 4, the conventional power unit suspension device 3 for a railroad vehicle suspends the power unit from the bogie 6 in a suspension seat 22 provided at a position approximately at the center line of the gear width in the gear unit. It was Since the hanging seat 22 and the carriage 6 move relative to each other during operation, the hanging device 3 absorbs this relative movement by means of cushioning rubber.

[0005]

[Problems to be solved by the device]

 The above-mentioned conventional power unit suspension device for railway vehicles has the following problems. That is, since the suspension seat 22 is provided at a position approximately on the center line of the gear width in the gear device, from the position of the center of gravity of the power device having the main motor integrally supported on one side of the gear box, There is a problem in weight distribution due to the large separation in the direction of the axle. Since the suspension seat 22 provided in the gear box is provided independently of other processed parts, the number of processing steps is large in manufacturing. There were problems such as.

The present invention has been made to solve the above problems.

[0007]

[Means for Solving the Problems]

 A powertrain suspension device for a railway vehicle according to the present invention is configured such that a flange portion provided on an output shaft side end surface of a frame of a main motor and a flange portion provided on a small gear portion of a gearbox of a gear device are fastened with a fastening member. The traction motor is configured to be cantilevered by the gear unit, and in the railway vehicle power unit in which the traction motor and the gear unit are integrated, the gear box flange is used as part of the suspension seat. I am trying.

That is, a part of the suspension device mounting seat is configured by using the flange portion of the gear box, and the other part is configured to project from the gear box correspondingly, and these suspension device mounting seats are configured. The power unit is suspended from the trolley by a suspension device through a rubber bush, etc. provided between

[0009]

[Action]

 A part of the hanging device mounting seat is constructed by using the flange part of the gear box, and the other part is projected from the gear box correspondingly, and is installed between these hanging device mounting seats. By suspending the suspension of the power plant from the bogie via the rubber bush or the like, the suspension portion of the power plant from the bogie can be brought closer to the center of gravity of the power plant for the integrated railway vehicle in the direction of the axle. This improves the distribution of suspended weight.

Further, since it becomes possible to machine the hanging device mounting seat at the same time as the machining of the flange portion, the number of machining steps can be reduced in manufacturing.

[0011]

【Example】

 FIG. 1 is a plan view of a power plant for a railway vehicle provided with a suspension device according to the present invention, FIG. 2 is a side view seen from a gear device side with wheels removed, and FIG. FIG. The hanging part mounting seat 23 is separately projected from the gear box 2 in parallel with the flange part 21 of the gear box 2, and the flange part 21 of the gear box 2 is used as a part of the hanging device mounting seat. A pin 9 is installed between the lifting device mounting seat 23 and the lifting device mounting seat 23, and the gear box 2 and the bogie 6 are connected by the lifting device 8 including the rubber bush 7 etc. Is suspended from.

[0012]

[Effect of device]

 With the above-described structure, the suspension device 8 can be arranged at a portion close to the center of gravity of the entire power plant in the axial direction, so that the distribution of gravity is improved, and unnecessary stress is not applied. ， Can be lightweight.

Further, the machining of the suspension device mounting seat can be performed simultaneously with the machining of the flange portion 21 of the gear box 2, so that the number of manufacturing steps can be reduced.

[Brief description of drawings]

FIG. 1 is a plan view of a power plant for a railway vehicle provided with a suspension device according to the present invention.

FIG. 2 is a side view seen from the gear unit side with the wheels of FIG. 1 removed.

FIG. 3 is an enlarged view of an AA cross section of FIG.

FIG. 4 is a plan view showing a main part of a conventional railroad vehicle power plant.

5 is a side view seen from the gear device side with the wheels of FIG. 4 removed.

[Explanation of symbols]

 1 Main motor 11 Flange part 2 Gear box 21 Flange part 22 Suspension seat 23 Suspension device mounting seat 3 Suspension device 4 Wheels 5 Axle 6 Bogie 7 Rubber bush 8 Suspension device 9 pins

Claims (1)

[Scope of utility model registration request] Claim: What is claimed is: 1. A flange portion provided on an output shaft side end surface of a frame of a main electric motor and a flange portion provided on a small gear portion of a gear box of a gear device are fastened together by a fastening member, and the main motor is attached to the gear device. A railway vehicle power unit configured to be held and supported, wherein a gear box flange portion is used as a part of a suspension seat in a railway vehicle power unit in which a main motor and a gear unit are integrated. .