JP6665059B2 - Connection structure of brake units for railway vehicles - Google Patents

Description

  The present invention relates to a structure for connecting a brake unit to a tension of a bogie in a railway vehicle.

  The railway vehicle includes a bogie, wheels mounted on the bogie, a brake shoe arranged opposite to the wheels, and a brake unit for pressing the brake shoe against the wheels. The brake unit is mounted on a horizontal tension provided on the truck.

  As shown in FIG. 7, a brake unit 100 mounted on an existing railway vehicle has a brake cylinder 101 and a vertically long box 102 in which a link member and the like are stored (see Patent Document 1). The box 102 is disposed between the wheel 110 and the lateral tension 120. The brake cylinder 101 is arranged near the obliquely upper part of the box 102. The brake unit 100 is often mounted parallel to a vertical axis passing through the center line of the lateral tension 120.

JP 2013-75660 A

  The existing railway vehicle uses the brake unit having the above configuration, but there is a small brake unit using a cylinder having a configuration different from that of the brake unit. A small brake unit has a cubic housing in which a cylinder is housed, and is lightweight and compact, so that it has a high degree of freedom in how to attach it to a lateral tension.

  For example, as shown in FIG. 8A, a method may be considered in which the upper surface 211 a of the housing 211 of the brake unit 210 is attached to the lateral tension 230 through the attachment 220 behind the wheel 200 and the brake shoe 201. Further, as shown in FIG. 8B, there is a method of attaching the rear surface 211b of the housing 211 to the lateral tension 230 through the attachment 240. Further, as shown in FIG. 8C, a method of attaching the side surface 211 c of the housing 211 via the attachment 260 to the side tension 250 of the trolley instead of the horizontal tension 230.

  However, when the above-described mounting is performed on an existing vehicle, the following problem occurs.

  When the upper surface 211a of the housing 211 is attached to the lateral tension 230 (see FIG. 8A), the front end (position near the wheel) and the rear end (position far from the wheel) of the housing 211 are bolts 311 and 312. The bolt 311 and the bolt 312 are located near the lateral tension 230. In order to insert the bolts 311 and 312, a structure penetrating the horizontal tension 230 may be considered, but this structure is practically difficult. Further, since the horizontal tension 230 may be used as a tank, a structure that does not penetrate the horizontal tension 230 is desirable.

When the rear surface 211b of the housing 211 is attached to the horizontal tension 230 (see FIG. 8B), a thin plate-shaped attachment 240 is attached to the rear surface 211b of the housing 211. However, a cylinder (not shown) is accommodated in the housing 211, and a reaction force generated when the brake shoe 201 is pressed against the wheel 200 by the operation of the cylinder is transmitted to the rear surface 211b of the housing 211. ) Does not have enough strength to receive this reaction force.

  In addition, when the side surface 211c of the housing 211 is attached to the side tension 250 of the bogie (see FIG. 8C), the front end (the position close to the wheel) and the rear end (the position far from the wheel) of the housing 211 are bolted. The bolt 321 and the bolt 322 are fixed to the fixture 260, and each of the bolts 321 and the bolt 322 is located at a position penetrating the side tension 250. A structure that penetrates the side tension 250 is virtually as difficult as a structure that penetrates the horizontal tension 230. In addition, due to the structure of the cart, the side tension 250 is not always located at a position where the housing 211 can be attached as shown in FIG. 8C.

  Therefore, an object of the present invention is to provide a structure in which a small brake unit can be mounted on an existing vehicle, and which does not penetrate the tension and has a sufficient mounting strength.

The present invention provides a truck having a tension extending in a vehicle width direction, a wheel attached to the truck, a brake shoe disposed between the tension and the wheel so as to face the wheel, In a railway vehicle including a brake unit that presses a wheel against the wheel and a mounting tool for mounting the brake unit to the tension, the brake unit includes a brake body at least partially disposed below the tension. have the brake body has a first surface facing the beam, and a second surface which is disposed so as to face the system Waco, and a third surface facing the front Kiseiwako opposite has, opposite to the said brake body is pre SL parallel to telescopically cylinder housing and a second surface and said third surface and the direction facing the fixture, which is arranged to face the needles Part and the first And a second attachment portion arranged along the third surface, at least a part of the facing portion is connected to the tension, and the second attachment portion Is disposed in a region of the third surface that does not overlap with the cylinder in the direction of expansion and contraction of the cylinder, and the brake body is located in a region that does not overlap with the tension of the first surface in plan view of the brake unit. It is attached to the first attachment portion and attached to the second attachment portion.

In the above configuration, the brake unit is attached to the fixture with bolts and the like at 1) a position not overlapping with the tension in plan view of the brake unit and 2) a position not overlapping with the cylinder in the direction of expansion and contraction of the cylinder. In these mounting positions, the bolts do not penetrate the tension and the reaction force of the pressing force generated when the brake shoe is pressed against the wheel acts on the mounting tool, but the mounting tool may receive this reaction force. it can. Therefore, the structure is such that a small brake unit can be mounted on an existing vehicle, and does not penetrate firmly and has sufficient mounting strength.
As another aspect, the present invention provides a truck having a tension extending in a vehicle width direction, a wheel attached to the truck, and a control arranged between the tension and the wheel so as to face the wheel. In a railway vehicle including a wheel, a brake unit that presses the brake shoe against the wheel, and a mounting tool for mounting the brake unit to the tension, the brake unit has at least a part below the tension. A brake body disposed, wherein the brake body has a first surface facing the tension, a second surface disposed to face the brake shoe, and a second face facing the brake shoe. The brake body has three surfaces, and in the brake body, an extensible cylinder is housed to push the brake shoe toward the wheel, and the mounting tool is arranged to face the tension. A first mounting portion disposed along the first surface; and a second mounting portion disposed along the third surface. Connected, the second mounting portion is disposed in a region of the third surface that does not overlap with the cylinder with respect to the direction of expansion and contraction of the cylinder, and the brake body is provided on the first surface of the brake unit in a plan view of the brake unit. It is attached to the first attachment portion in a region that does not overlap with the tension, and is attached to the second attachment portion.

  Further, in the above configuration, it is preferable that at least a part of the facing portion is curved along an outer peripheral surface of the tension. This makes it easier to connect the fittings firmly.

  In the above configuration, among the directions in which the brake unit can be removed defined by the mounting fixture, there is a direction that does not interfere with the wheel within a range in which the movement of the brake unit is restricted by the mounting fixture. Is preferred. Thus, the brake unit can be taken out from below the carriage.

  According to the present invention, it is possible to provide a structure in which a small brake unit can be mounted on an existing vehicle, which does not penetrate the tension and has sufficient mounting strength.

FIG. 3 is a front view of the vicinity of a brake unit. (A) is an enlarged front view around the brake unit, and (b) is an enlarged plan view around the brake unit. (A) is a front view of a fixture and a horizontal tension, (b) is a plan view of a fixture and a horizontal tension. It is a front view showing a process of taking out a brake unit below. It is a front view showing a process of taking out a brake unit below. It is a front view showing a process of taking out a brake unit below. It is an enlarged front view of the periphery of an existing brake unit. (A) is a schematic diagram showing an example of a mounting structure of a small brake unit, (b) is a schematic diagram showing another example of a mounting structure of a small brake unit, and (c) is a mounting diagram of a small brake unit. It is a schematic diagram which shows the other example of a structure.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. Here, a railway vehicle according to a first embodiment of the present invention will be described below with reference to FIGS.

  FIG. 1 shows a lower part of the vehicle body. The railway vehicle 1 includes a vehicle body (not shown), a trolley 2 disposed below the vehicle body, wheels 3 attached to the trolley 2, a brake shoe 4 opposed to a tread surface 3 a of the wheel 3, and a brake shoe And a brake unit 5 for pressing the wheel 4 against the wheel 3. The carriage 2 is provided with a horizontal tension 6. As shown in FIG. 2A, the brake unit 5 is attached to a lateral tension 6 by an attachment 7. In FIG. 2A, in the horizontal direction, a direction approaching the wheel 3 is defined as a front direction, and a direction moving away from the wheel 3 is defined as a rear direction.

  As shown in FIGS. 2A and 2B, the brake unit 5 is disposed between a cubic brake body 11 disposed below the lateral tension 6 and the lateral tension 6 and the wheels 3. Link member 12. The link member 12 swings around the upper end. The lower part of the link member 12 is arranged behind the brake shoe 4.

As shown in FIG. 2A, the brake body 11 has a cubic housing 21 and a cylinder 22 housed in the housing 21. The housing 21 has a first surface 31 facing the horizontal tension 6, a second surface 32 arranged to face the wheel 3, and a third surface 33 facing the opposite side to the wheel 3. I have .

The cylinder 22 is extendable and contractible in a direction parallel to a direction in which the second surface 32 and the third surface 33 face . A lower portion of the link member 12 is disposed at the front end of the cylinder 22.

  When gas is supplied to the cylinder 22, a piston (not shown) in the cylinder 22 moves forward and presses the lower part of the link member 12, whereby the lower part of the link member 12 swings forward. Thereby, the brake shoe 4 is pressed against the tread surface 3a of the wheel 3.

The brake unit 5 is inclined slightly upward to the right with respect to the horizontal direction. Therefore, the direction in which the second surface 32 and the third surface 33 of the brake unit 5 face also inclines to the right with respect to the horizontal direction.

  As shown in FIG. 3 (a), the mounting fixture 7 includes an opposing portion 41 disposed facing the horizontal tension 6 at an arbitrary angle, and a first portion disposed along the first surface 31 of the housing 21. It has a mounting part 42 and a second mounting part 43 arranged along the third surface 33 of the housing 21.

  The upper surface of the facing portion 41 is curved along the outer peripheral surface of the horizontal tension 6. The facing portion 41 is connected to the lateral tension 6 by welding or the like.

  The first mounting portion 42 is disposed in a region that does not overlap with the lateral tension 6 in the plan view of the brake unit 5 (see FIGS. 3A and 3B). The housing 21 of the brake unit 5 is fixed to the first mounting portion 42 using bolts 51 and 52 in a region that does not overlap with the lateral tension 6 in plan view of the brake unit 5. Ribs 61 and 62 stand between the bolts 51 and 52 (see FIG. 3B). The rib 61 and the rib 62 support the lateral tension 6.

  As shown in FIG. 3 (a), the second mounting portion 43 is located higher than the cylinder 22 in the housing 21, and does not overlap with the cylinder 22 on the third surface 33 in the direction of expansion and contraction of the cylinder 22. Are located in The third surface 33 is fixed to the second mounting portion 43 with bolts 53 in a region where the third surface 33 does not overlap with the cylinder 22 in the direction of expansion and contraction of the cylinder 22 (see FIG. 2A).

  Next, a method of taking out the brake unit 5 will be described with reference to FIGS.

  In a vehicle equipped with an existing brake unit, as shown in FIG. 7, a part of the brake unit 100 is disposed above the wheels 110 and the lateral tension 120, and a part of the brake unit 100 and the wheels are viewed in a plan view of the vehicle. 110 overlaps, and another part of the brake unit 100 overlaps the lateral tension 120. Therefore, the brake unit 100 cannot be taken out below the vehicle. Therefore, in the state of the cart alone, the brake unit 100 is pulled up above the cart and taken out.

  However, in the present embodiment, as shown in FIG. 4, a part of the brake unit 5 is disposed below the lateral tension 6, and the other part is disposed between the lateral tension 6 and the wheel 3. Since the brake unit 5 is not arranged above the lateral tension 6 and the wheels 3, the brake unit 5 can be taken out below.

  When taking out the brake unit 5, first, the brake shoe 4 is removed from the carriage 2 (see FIG. 4). Then, the bolts 51, 52, 53 are removed, and the brake unit 5 is moved downward (see FIGS. 5 and 6).

In the course of moving the brake unit 5 downwards, (see FIG. 5) is to the first surface 31 reaches the extended line l ₁ of the lower surface of the second mounting portion 43 of the brake unit 5, a brake unit 5 and wheels 3 The brake unit 5 is moved in a direction that does not interfere. Here, the lower part includes a vertically downward direction and an inclined downward direction that is inclined with respect to the vertically downward direction.

Some of the brake unit 5, surrounded by a first attachment portion 42 and the second mounting portion 43 and the lower surface of the extension line l ₁ of the second mounting portion 43 and the extension line l ₂ of the front surface of the first mounting portion 42 When the brake unit 5 is located in the restriction range R (the range indicated by hatching in FIG. 5), the rearward movement of the brake unit 5 is restricted by the second mounting portion 43, and the upward movement of the brake unit 5 is restricted to the first mounting portion 42. Is regulated. Therefore, when a part of the brake unit 5 is located in the regulation range R, the brake unit 5 is moved in a direction in which the brake unit 5 does not interfere with the wheels 3.

During downward movement of the brake unit 5, the first plane 31 is more than the lower surface of the extension line l ₁ of the second mounting portion 43, the brake unit 5 is allowed to move freely in the longitudinal direction.

Moreover, if, when the third surface 33 is movable forward from the front surface of the extension line l ₂ of the first mounting portion 42, the third surface 33 is greater than the extension line l _2, the brake unit 5 in the vertical direction It can be moved freely.

  As described above, when the brake unit 5 moves out of the restriction range R, the movement of the brake unit 5 is not restricted by the fixture 7, and thus the brake unit 5 can move freely. Accordingly, the brake unit 5 can be moved in the downward direction A as shown in FIG. Further, the brake unit 5 can be moved rearward in FIG.

As described above, according to the present embodiment, the following effects can be obtained.
The brake unit 5 is attached to the fixture 7 at 1) a position not overlapping the lateral tension 6 in a plan view of the brake unit 5 and 2) a position not overlapping the cylinder 22 in the direction of expansion and contraction of the cylinder 22. In these mounting positions, the bolt 51 and the bolt 52 do not penetrate the lateral tension 6, and the mounting fixture 7 can counter the reaction force of the pressing force generated when the brake shoe 4 is pressed against the wheel 3. The tangential force can be countered by the force acting on the bolts 51, 52, 53. Therefore, the structure is such that the brake unit 5 smaller than the existing brake unit can be mounted on the existing vehicle, and does not penetrate the lateral tension 6 and has sufficient mounting strength.

  Further, since the facing portion 41 of the attachment 7 is curved along the outer peripheral surface of the lateral tension 6, the facing portion 41 is easily connected to the lateral tension 6.

  Further, when a part of the brake unit 5 is located in the regulation range R when the brake unit 5 is taken out downward, the brake unit 5 is moved in a direction in which the brake unit 5 does not interfere with the wheels 3 so that the brake unit 5 is moved. Can be removed from below.

  As described above, the embodiments of the present invention have been described with reference to the drawings. However, it should be considered that the specific configuration is not limited to these embodiments. The scope of the present invention is defined by the terms of the claims, rather than the description above, and includes all modifications within the scope and meaning equivalent to the terms of the claims.

  For example, in the above embodiment, the brake unit 5 is inclined with respect to the horizontal direction, but the brake unit 5 may be arranged horizontally.

  In the above-described embodiment, the facing portion 41 of the attachment 7 is curved, but at least a part of the facing portion 41 may be curved.

DESCRIPTION OF SYMBOLS 1 Railway vehicle 2 bogie 3 Wheel 4 Brake 5 Brake unit 6 Lateral tension 7 Fixture 11 Brake main body 12 Link member 21 Housing 22 Cylinder 31 1st surface 32 2nd surface 33 3rd surface 41 Opposing part 42 1st mounting part 43 Second mounting part 51, 52, 53 Bolt R Regulation range

Claims (4)

A bogie having a firmness extending in the vehicle width direction, a wheel attached to the bogie, a brake arranged between the firmness and the wheel so as to face the wheel, and A brake unit that presses the brake unit, and a mounting tool for mounting the brake unit to the firmness,
The brake unit has a brake body at least partially disposed below the tension,
The brake body has a first surface facing the beam, and a second surface which is disposed so as to face the system Waco, and a third surface facing the front Kiseiwako opposite,
Wherein the inside brake body, before Symbol second surface and the third surface parallel to telescopically cylinder and the direction facing there is housed,
The mounting fixture includes an opposing portion disposed to face the tension, a first mounting portion disposed along the first surface, and a second mounting portion disposed along the third surface. Have
At least a part of the facing portion is connected to the tension,
The second mounting portion is disposed in a region of the third surface that does not overlap with the cylinder in the direction of expansion and contraction of the cylinder,
The brake body is attached to the first attachment portion in a region of the first surface that does not overlap with the tension in a plan view of the brake unit, and is attached to the second attachment portion. Connection structure of the railway vehicle brake unit. A bogie having a firmness extending in the vehicle width direction, a wheel attached to the bogie, a brake arranged between the firmness and the wheel so as to face the wheel, and A brake unit that presses the brake unit, and a mounting tool for mounting the brake unit to the firmness,
The brake unit has a brake body at least partially disposed below the tension,
The brake body has a first surface facing the beam, and a second surface which is disposed so as to face the system Waco, and a third surface facing the front Kiseiwako opposite,
The said brake body, for pushing towards the system Waco to the wheel, extendable cylinders are accommodated,
The mounting fixture includes an opposing portion disposed to face the tension, a first mounting portion disposed along the first surface, and a second mounting portion disposed along the third surface. Have
At least a part of the facing portion is connected to the tension,
The second mounting portion is disposed in a region of the third surface that does not overlap with the cylinder in the direction of expansion and contraction of the cylinder,
The brake body is attached to the first attachment portion in a region of the first surface that does not overlap with the tension in a plan view of the brake unit, and is attached to the second attachment portion. Connection structure of the railway vehicle brake unit.   The connection structure for a brake unit of a railway vehicle according to claim 1 or 2, wherein at least a part of the facing portion is curved along an outer peripheral surface of the tension. Among the possible directions Remove the brake unit, which is regulated by the fixture, to the extent that movement of the brake unit is restricted to the fitting, according to claim 1 to 3 in which the direction which does not interfere with the wheel is present The connection structure for a brake unit of a railway vehicle according to any one of the above.

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