JP6864504B2 - Bogie frame for railroad vehicles and railroad vehicles equipped with it - Google Patents

Description

The present invention relates to a bogie frame for a railroad vehicle and a railroad vehicle including the bogie frame.

In the drive bogie of a railroad vehicle, various devices such as a traction motor, a gear box, a traction device, and a brake device are mounted on the bogie frame, so that the bogie frame is provided with a seat for mounting each device.

Japanese Unexamined Patent Publication No. 2014-37186

However, since each device such as a traction motor, a gear box, and a traction device differs depending on the specifications of each vehicle model, it is necessary to change the support structure portion of each device in the bogie frame for each vehicle model. Therefore, every time the vehicle type changes, it is necessary to redesign the entire bogie frame from the viewpoint of strength, layout, etc., and review the assembly procedure and the like.

Therefore, it is an object of the present invention to make it possible to share most of the bogie frame between different vehicle types and to improve the design efficiency and assembly efficiency of the bogie.

The carriage frame for a railroad vehicle according to one aspect of the present invention includes a cross beam extending in the vehicle width direction and a device receiving block joined to the cross beam, and the device receiving block is a base portion joined to the cross beam. And the upper seat of the traction motor to which the main motor is attached, the gear box seat base to which the gear box seat is joined, the single link seat base to which the seat of the single link traction device is joined, and the brake. It integrally has at least two of the brake seats to which the device is mounted.

According to the above configuration, the equipment receiving block in which at least two of the traction motor upper seat, the gearbox seating base, the single link seating base and the brake seat are integrated is joined to the cross beam, so that the equipment receiving is joined to the cross beam. By changing the seat of the block or the seat joined to the seat base, the position of each device mounted on the trolley can be changed without changing the cross beam. Therefore, since most of the bogie frame can be shared among different vehicle types, the strength design of the bogie frame becomes easy, and the design efficiency and the assembly efficiency are improved.

According to the present invention, most of the bogie frame can be shared among different vehicle types, and the design efficiency and assembly efficiency of the bogie are improved.

It is a schematic diagram of the railroad vehicle which concerns on embodiment. It is a side view of the drive bogie of the railroad vehicle shown in FIG. It is a top view of the bogie frame of the drive bogie shown in FIG. It is a perspective view seen from the upper side of the bogie frame shown in FIG. It is a top view of the device receiving block shown in FIG. It is a front view of the device receiving block shown in FIG. It is a bottom view of the device receiving block shown in FIG. It is a rear view of the device receiving block shown in FIG. It is a perspective view of the bogie frame in the state where the gear box seat and the single link seat are joined to the equipment receiving block shown in FIG. FIG. 9 is a perspective view of the single link seat of the bogie frame shown in FIG. 9 and its vicinity as viewed from below. 9 is a cross-sectional view of a state in which the lower seat of the main motor is fixed to the bogie frame shown in FIG. 9 and the main motor is attached, as viewed from the vehicle width direction. 9 is a cross-sectional view of a state in which a gear box is attached to the bogie frame shown in FIG. 9 as viewed from the vehicle width direction.

Hereinafter, embodiments will be described with reference to the drawings. In the following description, the direction in which the railroad vehicle travels and the vehicle body extends is defined as the vehicle longitudinal direction, and the lateral direction orthogonal to the vehicle length direction is defined as the vehicle width direction. The vehicle longitudinal direction can also be referred to as the front-rear direction, and the vehicle width direction can also be referred to as the left-right direction.

FIG. 1 is a schematic view of a railroad vehicle 1 according to an embodiment. As shown in FIG. 1, the railroad car 1 is a train set including at least the first car 2 and the second car 3. The first vehicle 2 has a vehicle body 4 and a drive carriage 5 on which a traction motor is mounted, and the second vehicle 3 has a vehicle body 6 and a non-drive carriage 7 on which the traction motor is not mounted. In the present embodiment, since the basic configuration of the bogie frame 10 is common to each other between the drive bogie 5 and the non-drive bogie 7, the drive bogie 5 will be mainly described below.

FIG. 2 is a side view of the drive carriage 5 of the railway vehicle 1 shown in FIG. Note that in FIG. 2, the illustration of the traction motor, the gear box, and the like is omitted. As shown in FIG. 2, the drive carriage 5 supports the vehicle body 4 from below via an air spring 8 serving as a secondary suspension. The drive bogie 5 includes a bogie frame 10 on which an air spring 8 is mounted. The bogie frame 10 includes cross beams 11 extending in the vehicle width direction, but does not include side beams extending in the vehicle longitudinal direction from both ends of the cross beams 11 in the vehicle width direction. A pair of axles 12 extending along the vehicle width direction are arranged on both sides of the cross beam 11 in the vehicle longitudinal direction. Wheels 13 are provided on both sides of the axle 12 in the vehicle width direction. Bearings 14 that rotatably support the axle 12 outside the wheel 13 in the vehicle width direction are provided at both ends of the axle 12 in the vehicle width direction, and the bearing 14 is housed in the axle box 15.

The end portion of the cross beam 11 in the vehicle width direction is connected to the axle box 15 by the axle box support device 16. The axle box support device 16 includes an axle beam 17 extending from the axle box 15 toward the cross beam 11 side in the longitudinal direction of the vehicle. The bogie frame 10 has a receiving seat 18 protruding from the cross beam 11 toward the shaft beam 17, and the tip end portion of the shaft beam 17 is elastically coupled to the receiving seat 18 via a rubber bush (not shown). The pair of axle boxes 15 separated in the longitudinal direction of the vehicle each support the ends 19b on both sides in the longitudinal direction of the leaf springs 19 extending in the longitudinal direction of the vehicle. The central portion 19a of the leaf spring 19 in the longitudinal direction supports the end portion of the cross beam 11 in the vehicle width direction from below. As a result, the cross beam 11 is supported by the axle box 15 via the leaf spring 19. That is, the leaf spring 19 has both the function of the primary suspension and the function of the conventional side beam.

The leaf spring 19 has a bow shape that is convex downward when viewed from the side. A pressing member 20 having a downwardly convex arcuate lower surface is provided below the end portion of the cross beam 11 in the vehicle width direction, and the pressing member 20 is placed on the central portion 19a of the leaf spring 19 from above so as to be separated from each other. Contact. That is, in a state where the leaf spring 19 is not fixed to the pressing member 20 in the vertical direction, the pressing member 20 comes into contact with the upper surface of the leaf spring 19 due to a downward load due to gravity from the cross beam 11. That is, the pressing member 20 is not fixed to the leaf spring 19 by the fixture, but is kept in a state of pressing the leaf spring 19 by the pressure of the downward load due to gravity from the cross beam 11 and the reaction force of the leaf spring 19 against it. Dripping. As a result, the leaf spring 19 can swing with respect to the lower surface of the pressing member 20 while changing the pressing region. The pressing member 20 may be directly mounted on the upper surface of the central portion 19a of the leaf spring 19, or may be indirectly mounted via an inclusion (for example, a cushioning sheet).

A support member 21 is attached to the upper end of the axle box 15, and the end 19b of the leaf spring 19 is supported by the axle box 15 from below via the support member 21. The upper surface of the support member 21 is inclined toward the center side of the bogie in a side view. The end portion 19b of the leaf spring 19 is also placed on the support member 21 from above without being fixed in the vertical direction with respect to the support member 21. The support member 21 has a vibration-proof member 22 (for example, rubber) installed on the axle box 15 and a receiving member 23 installed on the vibration-proof member 22 and positioned on the vibration-proof member 22. The receiving member 23 has a recess in which the end 19b of the leaf spring 19 is housed, and the recess is opened upward and toward the center of the carriage. A sheet (for example, a rubber sheet) (for example, a rubber sheet) having a hardness lower than that of the leaf spring 19 and the receiving member 23 is sandwiched between the bottom surface of the recess of the receiving member 23 and the end 19b of the leaf spring 19.

FIG. 3 is a top view of the bogie frame 10 of the drive bogie 5 shown in FIG. FIG. 4 is a perspective view of the bogie frame 10 shown in FIG. 3 as viewed from above. As shown in FIGS. 3 and 4, the bogie frame 10 includes a cross beam 11, four brake receiving seats 29 welded to the cross beam 11, and a pair of device receiving blocks 30 welded to the cross beam 11. And. The four brake receiving seats 29 are arranged symmetrically with respect to the cross beam 11 in the vehicle longitudinal direction and the vehicle width direction. The pair of device receiving blocks 30 are arranged point-symmetrically with respect to the center of the cross beam 11 when viewed from above.

The cross beams 11 are a pair of cross beam bodies 25 extending in the vehicle width direction and separated from each other in the vehicle longitudinal direction, and a lower plate joined to the lower surface of the pair of cross beam bodies 25 so as to span both ends of the pair of cross beam bodies 25. It has 26 (see FIG. 2) and an upper plate 27 joined to the upper surface of the pair of cross beam bodies 25 so as to span both ends of the pair of cross beam bodies 25. The cross beam main body 25 is a tubular member. At least one of the internal spaces of the pair of cross beam main bodies 25 is sealed to serve as an auxiliary air chamber for the air spring 8. The brake receiving seats 29 are provided on the upper portion and the lower portion of the cross beam main body 25, and are joined to the cross beam main body 25 on the upper and lower surfaces in a state of being separated from the device receiving block 30 outward in the vehicle width direction. A brake device (not shown) is fixed to the brake receiving seat 29. The brake seat 29 is, for example, a T-shaped bracket.

The device receiving block 30 extends in the vehicle width direction, and is joined to the central portion of the cross beam main body 25 in the vehicle width direction and the outer portion in the vehicle longitudinal direction. The vehicle width direction dimension of the device receiving block 30 is, for example, 30 to 60% of the vehicle width direction dimension of the cross beam main body 25. The vertical dimension of the device receiving block 30 is substantially the same as the vertical dimension of the cross beam main body 25. The device receiving block 30 is formed by, for example, casting or forging, and the details are machined, and is rectangular in front view.

The device receiving block 30 integrally includes a base portion 31, a traction motor upper receiving seat 32, a gear box receiving seat base 33, a pair of single link receiving bases 34, and a traction motor lower receiving seat mounting portion 35. Have in. The base portion 31 is a joining interface of the device receiving block 30, and is a portion joined to the cross beam main body 25 facing the outer surface of the cross beam main body 25 in the vehicle longitudinal direction. The traction motor upper seat 32 is a seat to which the upper mounting portion 50a (see FIG. 11) of the traction motor 50 is fixed. The gear box receiving base 33 is a base to which the gear box receiving seat 40 (see FIG. 9) is joined by welding. The single link receiving base 34 is a base to which the single link receiving 41 (see FIG. 9) to which a known single link traction device (not shown) is attached. The surfaces of the base portion 31, the gear box seat base portion 33, and the single link seat base portion 34 are finished to be smooth.

FIG. 5 is a top view of the device receiving block 30 shown in FIG. FIG. 6 is a front view of the device receiving block 30 shown in FIG. FIG. 7 is a bottom view of the device receiving block 30 shown in FIG. FIG. 8 is a rear view of the device receiving block 30 shown in FIG. As shown in FIGS. 4 to 8, the base portion 31 has a back surface 31a that abuts on the cross beam main body 25, and the back surface 31a has a recess 31b extending in the vehicle width direction as a lightening for weight reduction and improvement of weldability. Is formed. The traction motor upper receiving seat 32 is adjacent to the outer side of the base portion 31 in the vehicle longitudinal direction. The traction motor upper receiving seat 32 has an upper surface 32a lower than the upper surface of the base portion 31 and a lower surface 32b higher than the lower surface of the base portion 31. On the upper surface 32a of the traction motor upper receiving seat 32, a groove 32c for locking the traction motor and a bolt hole 32d for fastening the traction motor are formed by machining. The groove 32c has a portion extending in the vehicle width direction and a portion extending in the vehicle longitudinal direction.

The gear box receiving seat base 33 is arranged side by side with the traction motor upper receiving seat 32 in the vehicle width direction, and is adjacent to the outside of the base portion 31 in the vehicle longitudinal direction. The gearbox receiving seat base 33 is shorter in the vehicle width direction than the traction motor upper receiving seat 32, and protrudes outward in the vehicle longitudinal direction from the traction motor upper receiving seat 32. The upper surface of the gear box receiving base 33 is flush with the upper surface of the base 31, and the lower surface of the gear box receiving base 33 is flush with the lower surface of the base 31. As shown in FIGS. 7 and 11, bolt holes 33a for fastening the lower traction motor seat 42 are formed on the lower surface of the gear box seat base 33 by machining.

The pair of single link receiving seat bases 34 are adjacent to the lower side of the traction motor upper receiving seat 32 and project downward from the traction motor upper receiving seat 32. The single link receiving base 34 is adjacent to the outside of the base portion 31 in the longitudinal direction of the vehicle, and projects outward from the base portion 31 in the longitudinal direction of the vehicle. The pair of single link receiving bases 34 are arranged so as to be symmetrical with respect to the center in the vehicle width direction of the cross beam main body 25. The single link seat base 34 is formed in a skirt shape so as to gradually widen as it approaches the main motor upper seat 32 (that is, as it goes upward) when viewed from the longitudinal direction of the vehicle. The single link seat base 34 is formed in a skirt shape so that the width gradually increases as it approaches the base 31 when viewed from below. The lower surface of the single link receiving base 34 is formed on the same plane as the lower surface of the cross beam main body 25 and the lower surface of the base portion 31.

The lower traction motor seat mounting portion 35 is arranged side by side with the single link receiving base 34 in the vehicle width direction in a state of being separated from the single link receiving base 34. The traction motor lower receiving seat mounting portion 35 projects outward from the base portion 31 in the longitudinal direction of the vehicle, and protrudes downward from the traction motor upper receiving seat 32. As shown in FIGS. 7 and 11, bolt holes 35b for fastening the traction motor lower receiving seat 42 are formed on the lower surface 35a of the traction motor lower receiving seat mounting portion 35 by machining.

FIG. 9 is a perspective view of the bogie frame 10 in a state where the gear box receiving seat 40 and the single link receiving seat 41 are joined to the equipment receiving block 30 shown in FIG. FIG. 10 is a perspective view of the single link receiving seat 41 of the bogie frame 10 shown in FIG. 9 and its vicinity as viewed from below. As shown in FIG. 9, the gear box receiving seat 40 is joined to the outer surface of the gear box receiving seat base 33 of the equipment receiving block 30 in the vehicle longitudinal direction by welding. The gearbox receiving seat 40 is joined to a horizontal wall portion 40a projecting outward from the gearbox receiving seat base 33 in the longitudinal direction of the vehicle, and protruding downward from the peripheral edge of the horizontal wall portion 40a and to the gearbox receiving base 33. It has a peripheral wall portion 40b. A rod insertion hole 40c is formed in the horizontal wall portion 40a. A notch 40d is formed in a portion of the peripheral wall portion 40b on the outer side in the longitudinal direction of the vehicle. The center of the rod insertion hole 40 is deviated outward in the vehicle width direction from the center of the gear box receiving base 33, but the side surface of the joint 40e of the gear box receiving 40 with the gear box receiving base 33 is. It is formed flush with the side surface of the gear box seat base 33.

As shown in FIGS. 9 and 10, a single link receiving seat 41 is joined to the lower surface of the single link receiving base 34 of the device receiving block 30. Specifically, the single link receiving seat 41 is joined to both the cross beam main body 25 and the device receiving block 30. That is, the peripheral edge of the upper surface of the single link receiving seat 41 is continuously welded to the cross beam main body 25, the base portion 31, and the single link receiving base portion 34. As a result, the single link receiving seat 41 projects downward from the cross beam main body 25 and the device receiving block 30. The single link receiving seat 41 is formed with a bolt hole 41a to which a single link traction device (not shown) is attached.

FIG. 11 is a cross-sectional view of a state in which the traction motor lower receiving seat 42 is fixed to the bogie frame 10 shown in FIG. 9 and the traction motor 50 is attached, as viewed from the vehicle width direction. As shown in FIGS. 9 and 11, the device receiving block 30 is joined to the cross beam main body 25, and the traction motor lower receiving seat 42 to which the lower mounting portion 50b of the traction motor 50 is attached is fixed to the device receiving block 30. There is. The traction motor lower receiving seat 42 includes a seat portion 42a, a first fixing portion 42b, a second fixing portion 42c, a first arm portion 42d (connecting portion), and a second arm portion 42e (connecting portion). Have. The seat portion 42a is located below the traction motor upper seat 32 of the device receiving block 30. A bolt hole 42f to which the traction motor 50 is fixed is formed in the seat portion 42a.

The first fixing portion 42b is formed by fastening the bolt B1 to the bolt hole 35b (see FIG. 7) of the traction motor lower seat mounting portion 35 of the device receiving block 30 closer to the receiving portion 42a. It is fixed at 30. The second fixing portion 42c is fixed to the equipment receiving block 30 by fastening the bolt B2 to the bolt hole 33a of the gear box receiving base 33 of the equipment receiving block 30 farther from the seating portion 42a. The first arm portion 42d connects the seat portion 42a to the first fixing portion 42b. The second arm portion 42e connects the seat portion 42a to the second fixing portion 42c. The first arm portion 42d extends upward to the cross beam main body 25 closer to the seat portion 42a, and the second arm portion 42e extends in the vehicle longitudinal direction toward the cross beam main body 25 farther from the seat portion 42a. It is extending. That is, the first arm portion 42d and the second arm portion 42e extend at different angles from each other.

The upper mounting portion 50a of the traction motor 50 has a laterally projecting portion 50c mounted on the upper surface 32a of the traction motor upper receiving seat 32 of the traction motor receiving block 30, and a locking portion 50d protruding downward from the laterally projecting portion 50c. The locking portion 50d of the traction motor 50 is inserted and locked in the groove 32c of the traction motor upper receiving seat 32 of the traction motor receiving block 30. The lateral protrusion 50c of the traction motor 50 is fixed to the traction motor upper receiving seat 32 by fastening the bolt B3 to the bolt hole 32d of the traction motor upper receiving seat 32. The lower mounting portion 50b of the traction motor 50 has a vertically protruding portion 50e that abuts on the receiving portion 42a of the traction motor lower receiving seat 42. The vertically protruding portion 50e of the traction motor 50 is fixed to the seat portion 42a by fastening the bolt B4 to the bolt hole 42f of the seat portion 42a of the traction motor lower seat 42.

FIG. 12 is a cross-sectional view of a state in which the gear box 54 is attached to the bogie frame shown in FIG. 9 as viewed from the vehicle width direction. As shown in FIG. 12, a rod 52 for inserting the rod insertion hole 40c downward is attached to the gear box receiving seat 40 joined to the device receiving block 30 by a fitting 53, and a gear is attached to the lower portion of the rod 52. The box 54 (reducer) is attached by the fixture 55. The gear box 54 is arranged side by side with the traction motor 50 in the vehicle width direction, and the input shaft of the gear box 54 is connected to the output shaft of the traction motor 50 via a universal joint (not shown). The gear box 54 has a gear group that reduces the rotational power transmitted from the traction motor 50, and transmits the reduced rotational power to the axle 12.

Although the bogie frame 10 of the drive bogie 5 has been described above, the bogie frame 10 is also shared by the non-drive bogie 7. That is, although the bogie frame 10 of the non-driving bogie 7 is not provided with the gear box receiving seat 40 and the lower receiving seat 42 of the traction motor, the bogie frame 10 of the non-driving bogie 7 includes the cross beam 11, the device receiving block 30, and one. It has this link seat 41.

According to the configuration described above, the device receiving block 30 in which the traction motor upper receiving seat 32, the gear box receiving seat base 33, and the single link receiving base 34 are integrated is joined to the cross beam 11, so that the base portion By changing the traction motor upper seat 32 or the gear box seat 40 joined to the gear box seat base 33 so as not to change 31, the cross beam 11 is mounted on the drive carriage 5 without changing. The positions of the traction motor 50 and the gear box 54 can be changed. Therefore, since most of the bogie frame 10 can be shared among different vehicle types, the strength design of the bogie frame 10 can be facilitated, the design efficiency can be improved, and the assembly work can be standardized. .. Further, since the equipment receiving block 30 is integrated with the traction motor upper receiving seat 32, the gear box receiving seat base 33, and the single link receiving base 34, the number of parts and the welding line can be significantly reduced. You can also.

Further, since the long device receiving block 30 is joined to the cross beam main body 25 along the longitudinal direction of the cross beam main body 25, the device receiving block 30 can also contribute to the improvement of the rigidity of the cross beam 11. Further, the gearbox receiving seat base 33 arranged in the vehicle width direction with the traction motor upper receiving seat 32 is shorter in the vehicle width direction than the traction motor upper receiving seat 32 and in the vehicle longitudinal direction than the traction motor upper receiving seat 32. Since it protrudes into the gear box, it is possible to easily perform the joining work of the gear box receiving seat 40 while preventing the device receiving block 30 from becoming large in size.

Further, since the single link receiving base 34 protrudes downward from the traction motor upper receiving seat 32 and protrudes outward from the base portion 31 in the longitudinal direction of the vehicle, the single link receiving base 34 is the upper part of the traction motor. The seat 32 and the base 31 are connected to each other at different angles, and the strength of the single link seat base 34 can be increased while reducing the reinforcing structure.

Further, among the lower traction motor seats 42, the traction motor 50 is fixed to the traction motor 42a, which is supported by the first arm portion 42d and the second arm portion 42e having different extension angles from each other, and the first arm. Since the portion 42d and the second arm portion 42e are connected to each of the pair of cross beam main bodies 25 via the device receiving block 30, the receiving portion 42a can firmly support the traction motor 50 and transmit the transmission to the cross beam 11. Unbalanced load can also be suppressed.

Further, since the height dimension of the device receiving block 30 having a rectangular shape extending in the vehicle width direction when viewed from the vehicle longitudinal direction is substantially the same as the height dimension of the cross beam 11, the device receiving block 30 is viewed from the front. It is also possible to prevent the block 30 from overlapping the cross beam 11 and the device receiving block 30 from interfering with other members.

Further, in the drive carriage 5, the gear box receiving seat 40 is joined to the equipment receiving block 30 and the traction motor lower receiving seat 42 is fixed, while in the non-driving carriage 7, the gear box receiving seat 40 is attached to the equipment receiving block 30. It is possible not to join and not to fix the lower seat 42 of the traction motor. Therefore, it is possible to prevent unnecessary parts from being provided on the non-driving bogie 7 while trying to standardize the bogie frame 10 between the driving bogie 5 and the non-driving bogie 7.

The present invention is not limited to the above-described embodiment, and its configuration can be changed, added, or deleted. For example, the brake seat may also be integrated with the device receiving block. In that case, it is preferable to extend the device receiving block to both sides in the vehicle width direction and form a bolt hole to which the brake device can be attached in the extended portion to serve as the brake receiving seat. Although the bogie frame 10 has the side beams omitted, it may have side beams. The cross beam 11 is not limited to the form having the pair of cross beam main bodies 25, and may be another form. The traction motor lower receiving seat 42 may be fixed to the cross beam main body 25 when the cross beam main body 25 is not used as an auxiliary air chamber.

1 Railroad vehicle 5 Drive bogie 7 Non-drive bogie 10 Bogie frame 11 Cross beam 25 Cross beam body 29 Brake receiving seat 30 Equipment receiving block 31 Base part 32 Traction motor upper receiving seat 33 Gear box receiving seat base 34 Single link receiving seat base 35 Main Bogie lower seat mounting part 40 Gearbox receiving seat 41 Single link receiving seat 42 Main motor lower receiving seat 42a Seating part 42b First fixing part 42c Second fixing part 42d First arm part (connecting part)
42e 2nd arm part (connecting part)
50 Traction motor 54 Gear box

Claims (8)

A cross beam extending in the width direction of the vehicle and
A front-view rectangular device receiving block joined to the cross beam is provided.
The device receiving block is
The base part joined to the cross beam and
The upper seat of the traction motor to which the main motor is attached, the gear box seat base to which the gear box seat is joined, the single link seat base to which the seat of the single link traction device is joined, and the brake device A bogie frame for railroad vehicles that integrally has at least two of the attached brake seats. A cross beam extending in the width direction of the vehicle and
The equipment receiving block joined to the cross beam and
Equipped with a brake seat to which a brake device is attached,
The device receiving block is
The base part joined to the cross beam and
The upper seat of the traction motor to which the main motor is attached, the gear box seat base to which the gear box seat is joined, and the single link seat base to which the seat of the single link traction device is joined are integrated. Have and
The brake seat, the is joined to the cross beam in a state of being separated from the device support block, railway vehicle bogie frame. The gear box seat base is arranged side by side with the traction motor upper seat in the vehicle width direction.
The railcar bogie according to claim 2, wherein the gear box receiving base is shorter in the vehicle width direction than the traction motor upper receiving seat and protrudes in the vehicle longitudinal direction from the traction motor upper receiving seat. frame. The single link seat base is adjacent to the lower side of the traction motor upper seat and is adjacent to the outside of the base in the vehicle longitudinal direction.
The bogie frame for a railroad vehicle according to claim 2 or 3, wherein the single link receiving base portion projects downward from the traction motor upper receiving seat and protrudes outward from the base portion in the longitudinal direction of the vehicle. A cross beam extending in the width direction of the vehicle and
A device receiving block joined to the cross beam is provided.
The device receiving block is
The base part joined to the cross beam and
The upper seat of the traction motor to which the main motor is attached, the gear box seat base to which the gear box seat is joined, the single link seat base to which the seat of the single link traction device is joined, and the brake device It integrally has at least two of the brake seats that can be attached.
The device support block is rectangular in a front view, the height dimension is substantially equal to the height of the cross beam, railway vehicle bogie frame. A cross beam extending in the width direction of the vehicle and
The equipment receiving block joined to the cross beam and
Equipped with a traction motor lower seat
The device receiving block is
The base part joined to the cross beam and
The upper seat of the traction motor to which the main motor is attached, the gear box seat base to which the gear box seat is joined, the single link seat base to which the seat of the single link traction device is joined, and the brake device It integrally has at least two of the brake seats that can be attached.
The lower traction motor seat is fixed to the cross beam or the equipment receiving block, and the traction motor is fixed .
The cross beam has a pair of cross beam bodies extending in the vehicle width direction and spaced apart in the vehicle longitudinal direction.
The lower traction motor seat includes a seat portion to which the traction motor is fixed, a first fixing portion fixed to one of the pair of cross beam main bodies or the device receiving block, and the pair of cross beam main bodies or the device. a second fixing portion fixed to the other support block, and a connecting portion connecting the seat portion to the first fixing portion and the second fixing portion, railway vehicle bogie frame. A drive bogie having the bogie frame according to any one of claims 1 to 6 and a drive bogie.
A railway vehicle comprising a non-driving bogie having the bogie frame according to any one of claims 1 to 5. Prepare a cross beam that extends in the width direction of the vehicle,
The upper seat of the traction motor to which the main motor is attached, the gear box seat base to which the gear box seat is joined, the single link seat base to which the seat of the single link traction device is joined, and the brake device An equipment receiving block integrally having at least two of the attached brake seats and a base portion joined to the cross beam is formed by casting or forging and then machined.
A method for manufacturing a bogie frame for a railroad vehicle, in which the base portion of the equipment receiving block is joined to the cross beam.

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