JP7249843B2 - bolster module - Google Patents

Description

An embodiment of the present invention relates to a bolster module that constitutes a vehicle body underframe.

Generally, a railroad vehicle, for example, a locomotive, has a bogie provided with wheels and a traction motor for driving the wheels, a body underframe supported by the bogie, and a body mounted on the body underframe. ing. The vehicle body underframe has a pair of side beams, a horizontal beam arranged between the side beams, and a bolster arranged between the side beams. Furthermore, the locomotive is equipped with a cooling fan (blower) installed on the body underframe within the body. The blower takes in air from outside the vehicle through an air intake port provided on the side or roof of the vehicle body, supplies the air to the traction motor under the floor through the ventilation duct, and cools the traction motor.

JP-A-5-058288

In general, the above-mentioned ventilation ducts are installed under the floor of the car body, but there are other equipment and bolsters in the car body and under the floor space. Difficult to design. For example, in a railroad vehicle that employs a three-axle bogie, if one blower is used to cool the three traction motors in order to secure space inside the vehicle, the ventilation duct branches in three directions under the floor, The shape is complicated to avoid interference with equipment and bolsters. Therefore, the design of the ventilation duct becomes more difficult.
An object of the embodiments of the present invention is to provide a bolster module in which a ventilation duct can be easily installed without interfering with equipment under the floor.

According to an embodiment of the present invention, the bolster module comprises a first main plate having at least a pair of side edges and a second main plate having at least a pair of side edges and facing parallel and spaced apart from said first main plate. a plurality of ribs sandwiched between the first main plate and the second main plate and connected to the first main plate and the second main plate; A ventilation duct formed by the ribs, the first main plate and the second main plate, an intake port formed in the first main plate communicating with the ventilation duct, and a ventilation duct formed in the second main plate communicating with the ventilation duct. and a cylindrical duct member with one end closed . The plurality of ribs includes a rib connected to one end of two ribs forming the ventilation duct and closing one end of the ventilation duct, and the open end of the duct member is connected to the other end of the ventilation duct. and the duct member has a discharge port communicating with the ventilation duct.

1 is a side view schematically showing an electric locomotive according to a first embodiment; FIG. FIG. 2 is a perspective view showing a bolster module of the body underframe of the electric locomotive; FIG. 3 is a perspective view of the bolster module viewed from the rear side; FIG. 4 is a plan view showing the back side of the bolster module; FIG. 5 is a sectional view of the bolster module showing the internal structure of the bolster module; 6 is a cross-sectional view of the bolster module along line AA of FIG. 4; FIG. FIG. 7 is a perspective view showing the lower surface side of the bolster module according to the second embodiment; FIG. 8 is an exploded perspective view showing a discharge port and an adjustment plate of the bolster module according to the second embodiment; FIG. 9 is a cross-sectional view of a ventilation duct and adjustment plate of the bolster module according to the second embodiment; FIG. 10 is a plan view showing a discharge amount adjusting mechanism of the bolster module according to the third embodiment; FIG. 11 is a cross-sectional view of the discharge amount adjusting mechanism;

Embodiments of the present invention will be described below with reference to the drawings.
It should be noted that the disclosure is merely an example, and appropriate modifications that can be easily conceived by those skilled in the art while keeping the gist of the invention are naturally included in the scope of the present invention. In addition, in order to make the description clearer, the drawings may schematically show the width, thickness, shape, dimensions, etc. of each part compared to the actual embodiment, but this is only an example and does not apply to the present invention. It does not limit interpretation. In addition, in this specification and each figure, the same reference numerals may be given to the same elements as those described above with respect to the previous figures, and detailed description thereof may be omitted or simplified as appropriate.

(First embodiment)
FIG. 1 is a side view schematically showing a locomotive according to a first embodiment as a railway vehicle. As shown, the locomotive 10 includes a plurality of, for example, two bogies 12 and a car body 30 supported on the bogies 12 . Each truck 12 is, for example, a three-axle truck. That is, each bogie 12 includes a bogie frame 14a, three axles 14b rotatably supported by the bogie frame 14a, wheels 15 attached to each axle 14b, and three wheels mounted on the bogie frame 14a for driving the axles 14b. main motor 16 and the like.
The vehicle body 30 includes a vehicle body underframe 20 supported on the bogie 12, two operator cab structures 30a mounted on both front and rear end portions of the vehicle body underframe 20, and the vehicle body underframe 20 between the two operator cab structures 30a. and a machine room structure 30b mounted thereon. The operator's cab structure 30a forms front and rear operator's cabs 31a, 31a, and the two operator's cab structures 30a and the machine room structure 30b form a machine room 31b.
A plurality of, for example, two blowers 32 are installed in the machine room 31b. The blowers 32 are installed on the vehicle body underframe 20 and positioned above the bogie 12 . The blower 32, for example, takes in outside air from an intake port formed in the roof of the machine room 31b, passes the taken in outside air through the ventilation duct of the bolster module described later, and supplies it as cooling air to the three main motors 16 under the floor. supply.

Next, the bolster module according to the present embodiment, which constitutes part of the vehicle body underframe 20, will be described. 2 is a perspective view showing a bolster module, FIG. 3 is a perspective view showing the bottom side of the bolster module, FIG. 4 is a plan view showing the back side of the bolster module, and FIG. 5 is the bolster module. FIG. 6 is a cross-sectional view of the bolster module along line AA in FIG. 4; In each of these figures, a portion of the pair of side beams 22 to which the bolster module is fastened is also illustrated.
First, the configuration of the side beams 22 used in the example will be described. As shown in FIGS. 2, 5 and 6, each side beam 22 is constructed of channel steel and includes a longitudinally extending side wall 21a and a side wall 21a extending perpendicularly to side wall 23a from one side edge of side wall 21a. A first wall 21b extending over the entire length of one side edge of the protruding side wall 21a, and a first wall 21b extending from the other side edge of the side wall 21a perpendicularly to the side wall 21a and extending over the entire length of the other side edge and spaced apart from the first wall 21b. and a second wall 21c that are placed and substantially parallel to each other. Further, the side beam 22 has a plurality of reinforcing walls 21d spaced apart in the longitudinal direction, each reinforcing wall 21d being positioned between the first wall 21b and the second wall 21c. 21b, the first wall 21c and the side wall 21a. The pair of side beams 22 are arranged parallel to each other with a space therebetween, with the side walls 23a facing each other.

As shown in FIGS. 2 to 6, the bolster module 50 includes a flat first main plate (upper plate) 51A and a second main plate (lower plate) 51B facing the first main plate substantially parallel with a gap. , and a plurality of flat plate-shaped ribs (reinforcing beams) 70 interposed between the first main plate 51A and the second main plate 51B. The ribs 70 are formed to have the same height (width) and stand vertically with respect to the first main plate and the second main plate. One side edge of each rib 70 is connected and fixed to the first main plate 51A, and the other side edge is connected and fixed to the second main plate 51B.

As shown in FIG. 2, the first main plate 51A is formed in a substantially rectangular shape, and has a pair of left and right first side edges SE1 and second side edges SE2 extending parallel to the side beams 22 and perpendicular to the side beams 22, respectively. It has a pair of upper and lower third side edges SE3 and fourth side edges SE4 that extend in the direction of the arrow. The first main plate 51A includes a notch or recess 32a that opens in the center of the first side edge SE1, a recess 33a that opens substantially in the center of the second side edge SE2, the first side edge SE1 and the second side edge SE1. An opening 38a formed in the vicinity of the third side edge SE3 at approximately the center between the side edge SE2 and a rectangular opening 34 formed in the vicinity of the second side edge SE2 and the recess 33a to serve as an intake port. and Two first side edges SE1 positioned on both sides of the recess 32a constitute a first contact edge 36a and a second contact edge 36b that can contact the side wall 21a of the side beam 22, respectively. Further, the second side edges SE2 located on both sides of the recess 33a constitute a third contact edge 36c and a fourth contact edge 36d that can contact the side wall 21a of the other side beam 22, respectively. Furthermore, the first main plate 51A integrally has a rectangular projection 40a projecting in a direction parallel to the side beam 22 from the fourth side edge SE4.

As shown in FIGS. 3 and 4, the second main plate 51B has substantially the same dimensions and contour shape as the first main plate 51A. That is, the second main plate 51B is formed in a substantially rectangular shape, and includes a pair of left and right first and second side edges extending parallel to the side beams 22, and a pair of upper and lower side edges extending in a direction orthogonal to the side beams 22, respectively. a third side edge and a fourth side edge; The second main plate 51B includes a recess 32b opening at the center of the first side edge, a recess 33b opening substantially at the center of the second side edge, and a recess between the first side edge and the second side edge. It has an opening 38b formed substantially in the center near the third side edge, and two rectangular openings 35 serving as ejection ports. The recesses 32b, 33b and the opening 38b respectively face the recesses 32a, 33a and the opening 38a of the first main plate 51A.

The second main plate 51B integrally has a rectangular protrusion 40b that protrudes in a direction parallel to the side beam 22 from the fourth side edge. The convex portion 40b faces the convex portion 40a of the first main plate 51A in parallel. One opening 35 is provided in the vicinity of one side edge of the convex portion 40b, and the other opening 35 is provided in the vicinity of the opening 38b and in parallel with the one opening 35 and the side beam 22. ing.
In the second main plate 51B, two side edge portions located on both sides of the recess 32b extend in a direction orthogonal to the side beam 22 beyond the first contact edge 36a and the second contact edge 36b of the first main plate 51A. , and form a first flange 42a and a second flange 42b that can contact the second wall 21c of the side beam 22, respectively. Two side edge portions located on both sides of the recess 33b extend in a direction perpendicular to the side beam 22 beyond the third contact edge 36c and the fourth contact edge 36d of the first main plate 51A, respectively. A third flange 42c and a fourth flange 42d that can contact the second wall 21c of the side beam 22 are formed.

A circular center pin receiver 71b and four circular spring receivers 71a are formed on the surface (outer surface) of the second main plate 51B. The center pin receiver 71b is provided between the opening 38b and the third side edge at the center in the width direction of the surface of the second main plate 51B. The four spring bearings 71a are respectively provided at the four corners of the second main plate 51B. A center pin 68 is attached to the center pin receiver 71b.

As shown in FIGS. 5 and 6, the plurality of ribs 70 includes a plurality of vertical ribs extending in a direction parallel to the side beams 22, a plurality of horizontal ribs extending in a direction orthogonal to the side beams 22, and the vertical ribs. and cross ribs 70X extending obliquely across the edge.
The vertical ribs 70 are four vertical ribs erected in alignment with the first contact edge 36a, the second contact edge 36b, the third contact edge 36c, and the fourth contact edge 36d of the first main plate 51A. 70d, 70e, 70f, 70g, 70. Further, the vertical rib 70 extends continuously from the extending end of the projection 40a to the second side edge SE3 of the first main plate 51A in alignment with one side edge of the projection 40a, and the projection 40a. and a longitudinal rib 70b extending continuously from the extending end of the first main plate 51A to the second side edge SE3 of the first main plate 51A in alignment with the other side edge of the convex portion 40a. The longitudinal ribs 70a, 70b are arranged facing each other with a predetermined spacing. A portion of the vertical rib 70b extends along the periphery of the bent opening 34 toward the vertical rib 70f.

The multiple lateral ribs include a lateral rib 70 located near the third side edge SE3 of the first main plate 51A and a lateral rib 70 located near the fourth side edge SE4 of the first main plate 51A. . One horizontal rib 70 extends from a vertical rib 70d to a vertical rib 70f and intersects or connects with a plurality of vertical ribs along the way. The other horizontal rib 70 extends from the vertical rib 70e to the vertical rib 70g, and intersects or connects with a plurality of vertical ribs along the way. Further, the lateral ribs include lateral ribs 70h provided in alignment with the extending edges of the projections 40a. Both ends of the horizontal rib 70h are connected to the ends of the vertical ribs 70a and 70b.

The two vertical ribs 70a and 70b, the first main plate 51A and the second main plate 51B constitute a hollow ventilation duct 52. As shown in FIG. The ventilation duct 52 extends in a direction parallel to the side beam 22 from the extended end of the convex portion 40a to the second side edge SE3. One end in the longitudinal direction of the ventilation duct 52 located on the convex portion 40a is closed by a horizontal rib 70h. The other longitudinal end of the ventilation duct 52 opens between the side edges SE3 of the first main plate 51A and the second main plate 51B.
Two oblique beams 77a and 77b are provided in the ventilation duct 52. As shown in FIG. The oblique beam 77a is provided in the vicinity of the third side edge SE3 and extends from the position where the vertical rib 70a and the second main plate 51B intersect to the position where the vertical rib 70b and the first main plate 51A intersect. The oblique beam 77b is provided in the vicinity of the fourth side edge SE4 and extends from the position where the vertical rib 70a and the first main plate 51A intersect to the position where the vertical rib 70b and the second main plate 51B intersect.
An opening 34 provided in the first main plate 51A communicates with the inside of the ventilation duct 52 and forms an intake port of the ventilation duct 52 . Two openings 35 formed in the second main plate 51B respectively communicate with the ventilation duct 52 and constitute two discharge ports.

As shown in FIGS. 2 to 5, the bolster module 50 has a rectangular tubular duct member 55 . The duct member 55 has one end closed and the other end connected to the open end of the ventilation duct 52 . In one example, the sidewalls of the duct member 55 and the vertical ribs 70a, 70b are connected by a pair of connecting plates (eg, gusset plates) 81 and bolts. Thereby, the duct member 55 communicates with the ventilation duct 52 and constitutes one end of the ventilation duct. A rectangular opening 37 is provided in the duct member 55 . The opening 37 communicates with the inside of the ventilation duct 52 and constitutes a discharge port. The opening 37 is arranged in line with the two openings 35 of the second main plate 51B. The openings 35 and 37 serving as the three outlets are spaced apart from each other in the longitudinal direction of the duct 52 . For example, one opening 35 is provided substantially in the center of the duct 52 in the longitudinal direction, and the other openings 35 and 37 are provided near both ends of the duct 52 in the longitudinal direction. The positions of these outlets are adjusted according to the arrangement positions of the three main motors 16 provided on the truck 14 described above.

As shown in FIGS. 2 to 4, the bolster module 50 configured as described above is arranged between the pair of side beams 22 and fastened to the pair of side beams 22 with bolts. The longitudinal ribs 70d, 70e of the bolster module 50 are in contact with the side wall 21a of one of the side beams 22, and are fastened to the side wall 21a with bolts. The first flange 42a and the second flange 42b are positioned on the second wall 21c of the side beam 22, respectively, and fastened to the second wall 21c with bolts.
Similarly, the longitudinal ribs 70f, 70g of the bolster module 50 abut against the side wall 21a of the other side beam 22 and are fastened to the side wall 21a with bolts. The third flange 42c and the fourth flange 42d are positioned on the second wall 21c of the side beam 22 and fastened to the second wall 21c with bolts.

As shown in FIG. 1, the vehicle body underframe 20 having two bolster modules 50 is supported on the carriage 12 with the center pin 68 of the bolster module 50 inserted into a core plate (not shown) of the carriage 12. be. Each blower 32 is installed on the first main plate 51A and on the side sill 22 overlapping the opening (intake port) 34 of the bolster module 50, and the discharge port of the blower 32 ventilates through the opening (intake port) 34. It communicates with the duct 52 . Also, the three openings (discharge ports) 35 and 37 of the bolster module 50 are connected to the main electric motor 16 via the connecting duct RE.
The air blower 32 takes in air from outside the vehicle through an air intake port provided on the roof of the vehicle body 30, supplies it to the main electric motor 16 under the floor through the ventilation duct 52 of the bolster module 50 and the three connecting ducts RE, and supplies it to the main electric motor 16. to cool.

According to the first embodiment configured as described above, the bolster and the ventilation duct are integrated by forming the ventilation duct 52 with a part of the ribs of the bolster module 50 and the first and second main plates. A bolster module is obtained. By integrating the ventilation duct with the bolster, the ventilation duct hardly interferes with other equipment under the floor, making it possible to effectively utilize the installation space under the floor. At the same time, the shape of the ventilation duct can be simplified, which facilitates the design of the ventilation duct. Further, by adjusting the cross-sectional area of a part of the ventilation duct 52 connected to each main motor 16 to equalize the static pressure in each passage, the ventilation duct 52 that can evenly blow air to each main motor can be obtained.
As described above, according to this embodiment, it is possible to obtain a bolster module in which a ventilation duct can be easily installed without interfering with equipment under the floor.

Next, a bolster module according to another embodiment will be described. In the other embodiment described below, the same reference numerals are given to the same parts as in the first embodiment described above, detailed description thereof is omitted or simplified, and parts different from the first embodiment will be described in detail.
(Second embodiment)
FIG. 7 is a perspective view showing the lower surface side (rear surface side) of the bolster module according to the second embodiment.
As shown in FIG. 7, the bolster module 50 includes a first main plate (upper plate) 51A, a second main plate (lower plate) 51B opposed to the first main plate with a gap therebetween, and these first main plates. It has a plurality of flat plate-like ribs (reinforcing beams) 70 sandwiched between 51A and the second main plate 51B. The ribs 70 are formed to have the same height (width) and stand vertically with respect to the first main plate and the second main plate. One side edge of each rib 70 is connected and fixed to the first main plate 51A, and the other side edge is connected and fixed to the second main plate 51B. According to the second embodiment, the multiple ribs 70 include multiple longitudinal ribs extending substantially parallel to the side beams 22 and multiple lateral ribs extending in a direction perpendicular to the side beams 22 . Each side sill 22 is formed in a rectangular tubular shape by combining two L-shaped steel materials.

According to the second embodiment, the extension of the ventilation duct 52 is not a separate duct, but an integrated ventilation duct with the first main plate 51A, the second main plate 51B, and the ribs 70 . That is, the first main plate 51A includes a rectangular first protrusion 40a protruding from the fourth side edge SE4 in a direction parallel to the side beam 22, and a rectangular protrusion 40a protruding from the third side edge SE3 in a direction parallel to the side beam 22. It integrally has a shaped second convex portion 41a. Similarly, the second main plate 51B projects from the fourth side edge SE4 in the direction parallel to the side sill 22, and from the third side edge SE3, the rectangular first convex portion 40b protrudes in the direction parallel to the side sill 22. It integrally has a rectangular second convex portion 41b. The first convex portion 40b faces the first convex portion 40a of the first main plate 51A in parallel. The second convex portion 41b faces the second convex portion 41a of the first main plate 51A in parallel.

The plurality of vertical ribs 70 are arranged continuously from the extending ends of the first protrusions 40a and 40b to the extending ends of the second protrusions 41a and 41b in alignment with one side edges of the first protrusions 40a and 40b. The longitudinal rib 70a extends continuously from the extending ends of the first protrusions 40a and 40b to the extending ends of the second protrusions 41a and 41b in alignment with the other side edges of the first protrusions 40a and 40b. and longitudinal ribs 70b. The longitudinal ribs 70a, 70b are arranged facing each other with a predetermined spacing. A part of the vertical rib 70 b is bent like a crank toward the side beam 22 and extends along the periphery of the opening (suction port) 34 . Further, the horizontal ribs are aligned with the extending edges of the first protrusions 40a and 40b and closed the opening ends, and aligned with the extending edges of the second protrusions 41a and 41b. and transverse ribs 70f which are provided and which close the open ends.
These two vertical ribs 70a, 70b, the first main plate 51A, the second main plate 51B, and the horizontal ribs 70h, 70f constitute a hollow ventilation duct 52. As shown in FIG. The ventilation duct 52 extends in a direction parallel to the side beams 22 from the extending ends of the first protrusions 40a and 40b to the extending ends of the second protrusions 41a and 41b.

A rectangular opening (suction port) 34 is formed in the first main plate 51</b>A and communicates with the ventilation duct 52 . The suction port 34 is provided at a position slightly displaced from the central portion of the ventilation duct 52 in the longitudinal direction toward the first protrusions 40a and 40b.
Three openings (discharge ports) 35 are formed in the second main plate 51b and communicate with the ventilation duct 52 respectively. The three ejection ports 35 are, for example, rectangular and have the same size and dimensions. The three discharge ports 35 are provided in the longitudinal central portion and both ends of the ventilation duct 52, respectively. In other words, the three discharge ports 35 are arranged in a line in the longitudinal direction of the ventilation duct 52 at intervals.

The plurality of discharge ports 35 described above have different distances from the suction port 34 , and the flow resistance from the suction port 34 to each discharge port 35 differs. Therefore, even if the three discharge ports 35 have the same opening area, the discharge amount of the cooling air is not the same.
Therefore, according to the second embodiment, the bolster module 50 is provided with an adjustment plate for adjusting the opening area of the discharge port 35 .
As shown in FIG. 7, the bolster module 50 includes a first adjusting plate 74a, a second adjusting plate 74b, and a third adjusting plate 74c, which are attached to the second main plate 51B so as to overlap the discharge port 35, respectively. The adjusting plates 74a, 74b, and 74c are each formed in a rectangular shape having dimensions larger than the ejection port 35. As shown in FIG. Each adjusting plate 74a, 74b, 74c is arranged so as to cover the entire discharge port 35, and the peripheral edge portion of the adjusting plate is screwed and fixed to the second main plate 51B. Each adjustment plate 74 a , 74 b , 74 c has diaphragm openings 76 a , 76 b , 76 c for adjusting the opening area of the discharge port 35 .

The first adjustment plate 74a is arranged so as to overlap the discharge port 35 provided at one end of the ventilation duct 52 in the axial direction. A diaphragm opening 76 a of the first adjustment plate 74 a is formed in a rectangular shape having substantially the same dimensions as the ejection port 35 and faces the entire surface of the ejection port 35 . That is, since the discharge port 35 is the farthest from the suction port 34, the first adjustment plate 74a does not substantially block the discharge port 35, and maintains the maximum discharge amount of the discharge port 35. It is configured.
The third adjustment plate 74c is arranged so as to overlap the discharge port 35 provided at the other end of the ventilation duct 52 in the axial direction. A throttle opening 76c of the third adjustment plate 74c is formed in a rectangular shape slightly smaller than the ejection port 35 and faces the ejection port 35. As shown in FIG. That is, since the discharge port 35 is the second most distant from the suction port 34, the third adjustment plate 74c partially closes the discharge port 35 and restricts the amount of discharge from the discharge port 35. .

FIG. 8 is an exploded perspective view showing the second adjustment plate and the discharge port, and FIG. 9 is a cross-sectional view of the ventilation duct and the second adjustment plate.
As shown in the drawing, the second adjustment plate 74b is arranged so as to overlap the discharge port 35 provided substantially in the center of the ventilation duct 52 in the axial direction. A diaphragm opening 76b of the second adjustment plate 74b is formed in a rectangular shape smaller than the ejection port 35 and faces the ejection port 35. As shown in FIG. The diaphragm opening 76b is formed to have a size smaller than that of the diaphragm opening 76c described above. Since the discharge port 35 is closest to the suction port 34, the second adjustment plate 74b partially closes the discharge port 35 and restricts the discharge amount from the discharge port 35. As shown in FIG.
The sizes (opening areas) of the throttle openings 76a, 76b, and 76c of the first, second, and third adjusting plates 74a, 74b, and 74c are such that the amount of cooling air discharged from the three discharge ports 35 is the same. , is set to a uniform size.
In addition, as shown in FIG. 9, the first, second, and third adjustment plates 74a, 74b, and 74c can also function as pedestals that connect the connection ducts RE, respectively.

In the second embodiment, other configurations of the bolster module 50 are the same as those of the bolster module of the first embodiment described above.
According to the second embodiment, in addition to the effects of the first embodiment, the discharge amount of the cooling air discharged from the plurality of discharge ports of the ventilation duct can be made uniform, and the plurality of traction motors on the truck side can be discharged. can be cooled uniformly.

(Third Embodiment)
A bolster module according to the third embodiment will be described. FIG. 10 is a plan view showing the discharge amount adjusting mechanism of the bolster module according to the third embodiment, and FIG. 11 is a sectional view of the discharge amount adjusting mechanism.
According to the third embodiment, the bolster module is provided with a discharge rate adjusting mechanism 80 capable of arbitrarily adjusting the discharge rate of the discharge port instead of the fixed adjusting plate.
As shown in FIGS. 10 and 11, a frame-shaped projection (pedestal) 84 is provided around the discharge port 35 on the second main plate 51b. In one example, the convex portion 84 is formed integrally with the second main plate 51b, but a separate frame may be attached to the second main plate 51b.

The discharge amount adjusting mechanism 80 includes a slidable adjusting plate 82 and an elongated feed screw (lead screw) 86 connected to the adjusting plate. In one example, the adjustment plate 82 is a rectangular plate having a length and width greater than the length of the discharge port 35 (the length in the longitudinal direction of the ventilation duct 52) and the width (the width in the width direction of the ventilation duct 52). have width. The adjusting plate 82 has a pair of long holes 82a extending in the width direction. The adjustment plate 82 is arranged on the inner surface of the second main plate 51B in the vicinity of the discharge port 35 . The adjusting plate 82 is slidably attached to the second main plate 51B by two fixing bolts 88 inserted through the second main plate 51B into the long holes 82a and nuts screwed on the fixing bolts 88, respectively. The adjustment plate 82 is slidable in the width direction of the ventilation duct 52 between a position where the discharge port 35 is fully opened and a position where the discharge port 35 is blocked, for example, by about 90% with the fixing bolt 88 loosened. It has become.

The feed screw 86 extends in the width direction of the ventilation duct 52 and has one end in the axial direction connected to one end in the width direction of the adjusting plate 82 . The other end in the axial direction of the feed screw 86 penetrates the side wall of the ventilation duct 52 , here, the vertical rib 70 a and extends outside the ventilation duct 52 . Outside the ventilation duct 52, an adjusting nut 90 is screwed onto the feed screw 86 and abuts against the outer surface of the vertical rib 70a. By turning the adjusting nut 90 , the feed screw 86 moves in the axial direction, and along with this, the adjusting plate 82 moves in the width direction of the ventilation duct 52 . By adjusting the screwing amount of the adjusting nut 90 in this manner, the adjusting plate 82 can be moved to an arbitrary position to partially block the discharge port 35, and the opening area of the discharge port 35 can be adjusted. , the amount of cooling air discharged from the discharge port 35 can be adjusted.
As an index indicating the screwing amount of the adjustment nut 90, that is, the adjustment position of the adjustment plate 82, for example, the projection length of the feed screw 86 from the vertical rib 70a can be used. The protrusion length can be measured, for example, by arranging a graduated measuring jig along the feed screw 86 and measuring the position of the tip of the feed screw 86 with the measuring jig.

The discharge rate adjusting mechanism 80 configured as described above is installed in each of the three discharge ports 35 of the bolster module described above. In the adjustment of the discharge amount, the cooling air is flowed from the suction port 34 to the ventilation duct 52, and the discharge amount adjustment mechanism 80 adjusts the opening area of the discharge port 35 while measuring the discharge amount of the cooling air from each discharge port 35. do. Specifically, with the pair of fixing bolts 88 loosened, the adjustment nut 90 is turned to move the adjustment plate 82 . The position of the adjusting plate 82 is adjusted so that the measured value of the ejection amount becomes a desired value. After adjustment, a pair of fixing bolts 88 and nuts are tightened to fix the adjusting plate 82 at the adjusted position. Also, after the adjustment, the projection length of the feed screw 86 is measured, and the measured length is preferably registered as the adjustment position separately.
The ejection amount adjustment is performed for the three ejection ports 35 so that the ejection amounts from the three ejection ports 35 are the same.
When adjusting the discharge rate of another bolster module having the same configuration as above, it is possible to adjust the discharge rate to a desired one by adjusting the projection length of the feed screw 86 to the registered adjustment position. is.

In the third embodiment, other configurations of the bolster module 50 are the same as those of the bolster module of the first embodiment described above.
According to the third embodiment, in addition to the effects of the first embodiment, the discharge amount of the cooling air discharged from the plurality of discharge ports of the ventilation duct can be made uniform, and the plurality of traction motors on the truck side can be discharged. can be cooled uniformly. Furthermore, according to the third embodiment, the discharge amount of the ventilation duct can be adjusted more accurately.
In addition, in the third embodiment, the adjustment plate is not limited to a rectangular plate, and may be of any other shape. Moreover, the movement mechanism for sliding the adjustment plate is not limited to the combination of the feed screw and the adjustment nut, and various other movement mechanisms can be used. For example, an unthreaded adjusting rod may be used instead of the feed screw, and the position of the adjusting plate may be adjusted by pushing and pulling the adjusting rod with a jig. Also, as an index indicating the adjustment position, a visible scale may be provided on the adjustment plate or other parts.

The present invention is not limited to the above-described embodiments as they are, and can be embodied by modifying constituent elements without departing from the scope of the present invention at the implementation stage. Further, various inventions can be formed by appropriate combinations of the plurality of constituent elements disclosed in the above embodiments. For example, some components may be omitted from all components shown in the embodiments. Furthermore, components across different embodiments may be combined as appropriate.
For example, the shapes of the first and second main plates of the bolster module are not limited to the above-described embodiments, and can be any contour shape and side edge shape. Also, the number and installation positions of the ribs can be selected as appropriate without being limited to the embodiment. The number of outlets of the ventilation duct is not limited to three, and can be increased or decreased as required.

DESCRIPTION OF SYMBOLS 10... Locomotive, 12... Bogie, 16... Traction motor, 20... Body underframe, 22... Side beam,
30... Body, 32... Blower, 34... Inlet, 35, 37... Outlet,
50... bolster module, 51A... first main plate, 51B... second main plate, 52... ventilation duct,
55... Duct member 70... Rib 72a, 72b... Vertical rib 77a, 77b... Oblique beam,
74a, 74b, 74c... adjustment plate, 76a, 76b, 76c... aperture opening,
80...Discharge rate adjusting mechanism, 82...Adjusting plate, 86...Feed screw, 90...Adjusting nut

Claims (5)

a first main plate having at least one pair of side edges;
a second main plate having at least a pair of side edges and facing parallel to and spaced from the first main plate;
a plurality of ribs respectively sandwiched between the first main plate and the second main plate and connected to the first main plate and the second main plate;
a ventilation duct formed by two ribs of the plurality of ribs that face each other with a space therebetween and the first main plate and the second main plate;
an intake port formed in the first main plate and communicating with the ventilation duct;
a discharge port formed in the second main plate and communicating with the ventilation duct;
a cylindrical duct member with one end closed ;
The plurality of ribs includes a rib connected to one end of two ribs forming the ventilation duct and closing one end of the ventilation duct,
The open end of the duct member is connected to the other end of the ventilation duct,
The duct member has a discharge port communicating with the ventilation duct,
bolster module. the second main plate has a center pin receiver and a spring receiver;
2. The bolster module of claim 1, further comprising a center pin secured to said center pin receiver. the second main plate has a plurality of outlets each communicating with the ventilation duct, and the plurality of outlets are arranged side by side at intervals in the longitudinal direction of the ventilation duct;
further comprising a plurality of adjusting plates attached to the second main plate and covering the discharge ports, respectively;
2. The bolster module according to claim 1, wherein each of said plurality of adjustment plates has a throttle opening having a different opening area and facing said discharge port. the second main plate has a plurality of outlets each communicating with the ventilation duct, and the plurality of outlets are arranged side by side at intervals in the longitudinal direction of the ventilation duct;
A discharge amount adjustment mechanism is provided in the ventilation duct near the discharge port and adjusts the discharge amount from the discharge port,
The discharge rate adjustment mechanism includes an adjustment plate provided on the second main plate movably between a closed position covering at least a portion of the discharge port and a position opening the discharge port, and connected to the adjustment plate. and a moving mechanism for moving said adjustment plate. The moving mechanism includes a feed screw having one end connected to the adjusting plate and the other end extending outward of the ventilation duct through the ribs forming the ventilation duct; 5. The bolster module of claim 4 , further comprising an adjusting nut threaded onto the other end and abutting said rib.

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