Unit brake device

Abstract

To provide a unit brake device which eliminates a need for temporary attachment of the unit brake device and facilitates attachment work of the unit brake device.SOLUTION: A unit brake device 1 includes: a brake cylinder 20 which is driven by compressed air supplied from a bogie side pipe 16 fixed to a bogie; a pressing part which is driven by the brake cylinder 20 and presses a brake shoe 2 to a tread of a wheel of the bogie; a housing part 31 which covers the pressing part; a bogie side attachment part 10 to which the housing part 31 is attached in a state of being fixed to the bogie, and provided with a bogie side connection port 13 connected with the bogie side pipe 16; and a brake side pipe 26 for connecting an intake port 20A of the brake cylinder 20 with the bogie side connection port 13. The brake side pipe 26 is fixed to the housing part 31 so as to connect the intake port 20A with the bogie side connection port 13 when the housing part 31 is attached to the bogie side attachment part 10.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] The present invention relates to a unit brake device. [Background technology]

[0002] The unit brake device described in Patent Document 1 brakes the wheels by pressing the brake shoes against the wheel treads with the brake cylinders. The unit brake device is attached to a bogie. A pipe for supplying compressed air is connected to the pneumatic cylinders. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-183855 Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, when installing the above-mentioned unit brake device on a bogie, it is necessary to attach the unit brake device to the bogie and check the position of the intake port of the brake cylinder of the unit brake device due to manufacturing errors of the bogie and bending errors of the piping connected to the intake port of the brake cylinder. However, since the distance between the beam of the bogie and the unit brake device is narrow, it is not possible to weld the piping to the bogie while the unit brake device is attached to the bogie. Therefore, it is necessary to remove the unit brake device once, weld the piping, and then reattach the unit brake device. In this way, the installation work of the unit brake device on the bogie is complicated. [Means for solving the problem]

[0005] A unit brake device that solves the above problem comprises a brake cylinder driven by compressed air supplied from a bogie side piping fixed to a bogie, a pressing portion driven by the brake cylinder and pressing a brake shoe against the wheel tread of the bogie, a housing portion covering the pressing portion, a bogie side mounting portion to which the housing portion is attached while fixed to the bogie, the bogie side mounting portion being provided with a bogie side connection port to which the bogie side piping is connected, and a brake side piping for connecting an air intake port of the brake cylinder and the bogie side connection port, the brake side piping being fixed to the housing portion so as to connect the air intake port and the bogie side connection port when the housing portion is attached to the bogie side mounting portion.

[0006] According to the above configuration, when the housing part is attached to the bogie-side mounting part, the brake-side piping, which is fixed to the housing part and connected to the intake port of the brake cylinder, is connected to the bogie-side connection port of the bogie-side mounting part. Therefore, if only the bogie-side mounting part is fixed to the bogie without attaching the entire unit brake device to the bogie, the position of the bogie-side connection port to which the bogie-side piping is connected relative to the bogie is determined. Then, by attaching the housing part to the bogie-side mounting part, the brake-side piping is connected to the bogie-side connection port of the bogie-side mounting part, and the connection to the bogie-side piping is completed. Therefore, the bogie-side piping can be laid without temporarily attaching the unit brake device to determine the position of the piping on the bogie, which makes the installation work of the unit brake device easier.

[0007] In the above-mentioned unit brake device, it is preferable that the housing portion has a brake side mounting portion to which the bogie side mounting portion is attached, the brake side mounting portion is provided with a brake side connection port that connects the bogie side connection port and the brake side piping, and the mounting surface between the bogie side mounting portion and the brake side mounting portion and the connection surface between the bogie side connection port and the brake side connection port are on the same plane.

[0008] In the above-mentioned unit brake device, it is preferable that the brake side connection port is provided in a portion protruding laterally from the housing portion. In the above-mentioned unit brake device, it is preferable that the housing portion includes a pipe holder for fixing the brake side pipe.

[0009] In the above-mentioned unit brake device, it is preferable that the brake cylinder comprises a service brake cylinder and a parking brake cylinder, the bogie side piping has a bogie side service brake piping that supplies compressed air to the service brake cylinder, and a bogie side parking brake piping that supplies compressed air to the parking brake cylinder, the bogie side mounting portion has a service brake connection port to which the bogie side service brake piping is connected, and a parking brake connection port to which the bogie side parking brake piping is connected, and the brake side piping has a service brake side piping that connects an intake port of the service brake cylinder and a connection port of the bogie side service brake piping, and a parking brake side piping that connects an intake port of the parking brake cylinder and a connection port of the bogie side parking brake piping.

[0010] The unit brake device that solves the above problem comprises a brake cylinder that is driven by compressed air supplied from a bogie-side piping fixed to the bogie, a pressing part that is driven by the brake cylinder and presses a brake shoe against the wheel tread of the bogie, a housing part that covers the pressing part, and a brake side piping that connects an air intake port of the brake cylinder to a bogie-side connection port to which the bogie-side piping is connected, and the brake side piping is fixed to the housing part.

[0011] According to the above configuration, the brake side piping, which is fixed to the housing portion and connected to the intake port of the brake cylinder, is connected to the bogie side connection port. Therefore, by fixing the bogie side piping to the bogie without attaching the entire unit brake device to the bogie, the position of the bogie side connection port, to which the bogie side piping is connected, relative to the bogie is determined. Then, by attaching the housing portion to the bogie, the brake side piping is connected to the bogie side connection port, and the connection to the bogie side piping is completed. Therefore, the installation work of the unit brake device can be performed without temporarily attaching the unit brake device to determine the position of the piping on the bogie, which makes it easier to install the unit brake device. Effect of the Invention

[0012] According to the present invention, the work of laying the bogie-side piping can be performed without temporarily attaching the unit brake device, which makes it easier to attach the unit brake device. [Brief description of the drawings]

[0013] [Figure 1] 1 is a cross-sectional view showing a schematic configuration of a first embodiment of a unit brake device. [Diagram 2] FIG. 4 is a rear view showing the configuration of the bogie-side mounting portion of the unit brake device according to the embodiment. [Diagram 3] FIG. 2 is a side view showing the configuration of the unit brake device of the embodiment. [Figure 4] FIG. 2 is an enlarged sectional view showing the configuration of a brake-side mounting portion of the unit brake device according to the embodiment; [Diagram 5] FIG. 2 is a front view showing the configuration of the unit brake device of the embodiment. [Figure 6] FIG. 4 is a side view showing the unit brake device of the embodiment attached to a bogie. [Figure 7] FIG. 4 is a side view showing the configuration of a second embodiment of the unit brake device. [Figure 8] FIG. 2 is a front view showing the configuration of the unit brake device of the embodiment. [Figure 9] FIG. 13 is a front view showing a configuration of a modified example of the unit brake device. [Figure 10] FIG. 13 is a front view showing a configuration of a modified example of the unit brake device. [Figure 11] FIG. 11 is a side view showing the configuration of a third embodiment of the unit brake device. [Figure 12] FIG. 2 is a front view showing the configuration of the unit brake device of the embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] (First embodiment) A first embodiment of the unit brake device will be described below with reference to Figures 1 to 6. The unit brake device is attached to a bogie of a railway vehicle, and applies brake pressure to the wheel treads to brake the railway vehicle.

[0015] (Unit brake device 1) As shown in Fig. 1, the unit brake device 1 includes an air brake cylinder 20 that outputs a braking force by air. The unit brake device 1 includes a transmission drive unit 30 that transmits the braking force output from the air brake cylinder 20 to a shoe head 37. The transmission drive unit 30 includes a hollow housing unit 31.

[0016] (Air brake cylinder 20) The air brake cylinder 20 includes a cylindrical cylinder 21 with a bottom. The cylinder 21 is connected to the left side of the housing part 31 in the figure. The air brake cylinder 20 includes a release spring 22 and a piston 23 biased by the release spring 22. The tip of the piston 23 protrudes into the housing part 31 and is rotatably connected to a brake lever 32 via a connecting pin 23A. The brake lever 32 rotates around a support shaft 33 fixed to the housing part 31. One end of the brake lever 32 (upper side in the figure) is connected to the piston 23.

[0017] An intake port 20A for supplying compressed air into the cylinder 21 is provided at the bottom (left side in the figure). The intake port 20A is provided on the surface side of the unit brake device 1. The compressed air is supplied to an operating chamber 21A surrounded by the cylinder 21 and the piston 23. When compressed air is supplied to the operating chamber 21A of the air brake cylinder 20, the piston 23 moves in a direction protruding from the cylinder 21 (right side in the figure), causing the brake lever 32 to rotate clockwise in the figure. On the other hand, when compressed air is discharged from the operating chamber 21A of the air brake cylinder 20, the piston 23 moves by the release spring 22 to the bottom side of the cylinder 21 (left side in the figure), causing the brake lever 32 to rotate counterclockwise in the figure.

[0018] (Transmission drive unit 30) The transmission drive unit 30 includes the brake lever 32, a spherical bearing 34 that fits into a spherical through hole 32A provided at the other end of the brake lever 32, and a cylindrical sheath rod 35 to whose outer circumferential surface the spherical bearing 34 is fixed. The transmission drive unit 30 includes a push rod 36 that is screwed into the inner surface of the sheath rod 35. The base end side of the push rod 36 is screwed into the inside of the sheath rod 35. A shoe head 37 is rotatably attached to the tip side of the push rod 36 via a connecting pin 36A. A hanger 38 is rotatably provided on the housing unit 31 via a connecting pin 31B. The shoe head 37 is rotatably attached to the hanger 38 via the connecting pin 31B. A brake shoe 2 that is pressed against the tread 3A of the wheel 3 of the railway vehicle is attached to the shoe head 37. The brake lever 32 , the sheath rod 35 , and the push rod 36 function as a pressing portion that presses the brake shoe 2 against the tread surface of the wheel 3 .

[0019] When the brake lever 32 rotates clockwise around the support shaft 33, the brake shoe 2 together with the sheath bar 35 and the push rod 36 is pushed towards the tread 3A of the wheel 3, and the brake shoe 2 is pressed against the tread 3A of the wheel 3, braking the rotation of the wheel 3. When the brake lever 32 is rotated clockwise by the air brake cylinder 20, the greater the amount of rotation, the greater the amount by which the brake shoe 2 is pressed against the tread 3A of the wheel 3, in other words, the greater the amount of friction. On the other hand, when the brake lever 32 rotates counterclockwise around the support shaft 33, the brake shoe 2 together with the sheath bar 35 and the push rod 36 moves away from the tread 3A of the wheel 3, and the braking of the rotation of the wheel 3 is released.

[0020] (Truck side mounting part 10) As shown in FIG. 2, the bogie 5 of the railcar includes a pair of side beams 6 (only one of which is shown) extending in the longitudinal direction of the railcar, and a cross beam 7 that is spanned between the pair of side beams 6. A bogie-side piping 16 that supplies compressed air from an air source is fixed to the cross beam 7 of the bogie 5. The unit brake device 1 includes a bogie-side mounting part 10 that is fixed to the bogie 5. A housing part 31 is attached to the bogie-side mounting part 10. The bogie-side mounting part 10 includes an upper mounting plate 11 located at an upper part, and a lower mounting plate 14 located at a lower part. The upper mounting plate 11 of the bogie-side mounting part 10 is provided with two upper bolt holes 12 and a bogie-side connection port 13. A bolt can be inserted into the upper bolt hole 12. The bogie-side piping 16 is connected to the bogie-side connection port 13 of the bogie-side mounting part 10. The lower mounting plate 14 of the bogie-side mounting portion 10 is provided with two lower bolt holes 15. Bolts can be inserted into the lower bolt holes 15. The upper mounting plate 11 and the lower mounting plate 14 may be integral with each other or may be separate, as long as they can be fixed to the bogie 5.

[0021] (Brake side piping 26) As shown in Fig. 3, the unit brake device 1 includes a brake side piping 26. The brake side piping 26 connects the intake port 20A of the air brake cylinder 20 and the upper brake side mounting portion 40. The brake side piping 26 is fixed to the housing portion 31 so as to connect the intake port 20A and the bogie side connection port 13 when the housing portion 31 is attached to the bogie side mounting portion 10. The housing portion 31 includes a pipe holder 25 that fixes the brake side piping 26. The pipe holder 25 supports the brake side piping 26 and is fixed to the outer surface of the housing portion 31. The brake side piping 26 is supported at three points: the intake port 20A, the pipe holder 25, and the upper brake side mounting portion 40.

[0022] (Upper brake side mounting portion 40) As shown in Fig. 4, the housing unit 31 has an upper brake-side mounting part 40 to which the bogie-side mounting part 10 is attached. A brake-side connection port 41 is provided in the upper brake-side mounting part 40. An annular ring gasket 42 is provided in the brake-side connection port 41. The ring gasket 42 protrudes from the surface of the upper brake-side mounting part 40, and is crushed when attached to the bogie-side mounting part 10. The brake-side connection port 41 connects the bogie-side connection port 13 and the brake-side piping 26.

[0023] As shown in FIG. 5, the upper brake side mounting part 40 has two screw holes 43 formed therein. A bolt is fastened into the screw holes 43. The brake side connection port 41 is provided in a portion protruding laterally (to the left in the figure) from the housing part 31. The upper brake side mounting part 40 protrudes laterally from the housing part 31. The brake side connection port 41 is connected to this protruding portion. The housing part 31 has a lower brake side mounting part 44. The lower brake side mounting part 44 has two screw holes 43 formed therein.

[0024] The mounting surface S1 between the bogie side mounting part 10 and the upper brake side mounting part 40 and the connection surface S2 between the bogie side connection port 13 and the brake side connection port 41 are on the same surface. The mounting surface S1 is the surface on which the screw hole 43 of the upper brake side mounting part 40 is provided. The connection surface S2 is the surface on which the brake side connection port 41 of the upper brake side mounting part 40 is provided. The mounting surface S1 and the connection surface S2 are provided on the same surface of the upper brake side mounting part 40.

[0025] (action) Next, the installation work of the unit brake device 1 will be described with reference to FIG. As shown in Fig. 6, the bogie-side mounting part 10 is fixed to the cross beam 7 of the bogie 5. An upper mounting plate 11 of the bogie-side mounting part 10 is provided with a bogie-side connection port 13. A bogie-side piping 16 is connected to the bogie-side connection port 13. The position of the bogie-side piping 16 is determined regardless of the installation state of the unit brake device 1.

[0026] The unit brake device 1 is attached to the bogie-side mounting part 10. The housing part 31 is attached to the bogie-side mounting part 10 in a state where the bogie-side mounting part 10 is fixed to the bogie 5. The screw hole 43 of the upper brake-side mounting part 40 is aligned with the upper bolt hole 12 of the upper mounting plate 11 of the bogie-side mounting part 10, and the screw hole 43 of the lower brake-side mounting part 44 is aligned with the lower bolt hole 15 of the lower mounting plate 14 of the bogie-side mounting part 10. The bolt 19 is inserted into the upper bolt hole 12 from the rear side of the bogie-side mounting part 10, and the bolt 19 is tightened into the screw hole 43 of the upper brake-side mounting part 40. The bolt 19 is inserted into the lower bolt hole 15 from the rear side of the bogie-side mounting part 10, and the bolt 19 is tightened into the screw hole 43 of the lower brake-side mounting part 44.

[0027] When the housing part 31 is attached to the bogie side mounting part 10, the ring gasket 42 of the brake side connection port 41 is pressed against the bogie side connection port 13, so that the brake side connection port 41 and the bogie side connection port 13 are in tight contact with each other. Thus, the brake side piping 26 connects the intake port 20A of the air brake cylinder 20 to the bogie side connection port 13. Since the brake side piping 26 connected to the bogie side connection port 13 does not need to be fixed to the side beam 6 of the bogie 5, the piping of the unit brake device 1 can be connected by simply installing the bogie side piping 16 up to the bogie side mounting part 10.

[0028] Next, the effects of the first embodiment will be described. (1-1) When the housing part 31 is attached to the bogie side mounting part 10, the brake side piping 26, which is fixed to the housing part 31 and connected to the intake port 20A of the air brake cylinder 20, is connected to the bogie side connection port 13 of the bogie side mounting part 10. Therefore, if only the bogie side mounting part 10 is fixed to the bogie 5 without attaching the entire unit brake device 1 to the bogie 5, the position of the bogie side connection port 13 to which the bogie side piping 16 is connected relative to the bogie 5 is determined. Then, by attaching the housing part 31 to the bogie side mounting part 10, the brake side piping 26 is connected to the bogie side connection port 13 of the bogie side mounting part 10, and the connection to the bogie side piping 16 is completed. Therefore, the installation work of the unit brake device 1 can be performed without temporarily attaching the unit brake device 1 to determine the position of the piping on the bogie 5, and therefore the installation work of the unit brake device 1 is facilitated.

[0029] (1-2) In the case where the mounting surface S1 between the bogie side mounting part 10 and the upper brake side mounting part 40 and the connection surface S2 between the bogie side connection port 13 and the brake side connection port 41 have uneven shapes, any manufacturing error will reduce the airtightness between the bogie side connection port 13 and the brake side connection port 41. However, since the mounting surface S1 and the connection surface S2 are on the same surface, the airtightness between the bogie side connection port 13 and the brake side connection port 41 can be maintained even if a manufacturing error occurs.

[0030] (1-3) The brake side connection port 41 is provided in the portion protruding laterally from the housing portion 31. This makes it easy to route the brake side pipe 26. (1-4) The housing part 31 is provided with the pipe holder 25 that fixes the brake side pipe 26. Therefore, by fixing the brake side pipe 26 to the housing part 31 rather than to the air brake cylinder 20, the distance to the brake side connection port 41 is shorter, so that the brake side pipe 26 can be stably supported.

[0031] Second embodiment Hereinafter, a second embodiment of the unit brake device will be described with reference to Fig. 7 and Fig. 8. The unit brake device of this embodiment differs from the first embodiment in that it further includes a parking brake cylinder. The following description will focus on the differences from the first embodiment.

[0032] (Unit brake device 101) As shown in Fig. 7, the unit brake device 101 includes a spring brake cylinder 50 used as a parking brake, in addition to the air brake cylinder 20 that outputs braking force by air. The unit brake device 101 transmits the braking force output from the air brake cylinder 20 and the spring brake cylinder 50 to the shoe head 37. The air brake cylinder 20 corresponds to the service brake cylinder, and the spring brake cylinder 50 corresponds to the parking brake cylinder.

[0033] (Spring brake cylinder 50) The spring brake cylinder 50 includes a cylindrical cylinder 51 with a bottom. The cylinder 51 is connected to the upper side of the housing unit 31 in the figure. The spring brake cylinder 50 biases a piston by a brake spring (not shown) to output a braking force to the brake lever 32, causing the brake lever 32 to rotate clockwise in the figure. An intake port 50A for supplying compressed air into the cylinder 51 is provided at the bottom (left side in the figure) of the cylinder 51. When compressed air is supplied from the intake port 50A, the piston compresses the brake spring, the braking force of the brake spring is released, and the brake lever 32 rotates counterclockwise in the figure.

[0034] (Truck side mounting part 10) In addition to the first bogie-side piping 16, a second bogie-side piping 17 that supplies compressed air to the spring brake cylinder 50 is fixed to the cross beam 7 of the bogie 5. The first bogie-side piping 16 is the same as the bogie-side piping 16 of the first embodiment. The unit brake device 101 includes a bogie-side mounting portion 10 that is fixed to the bogie 5. A housing portion 31 is attached to the bogie-side mounting portion 10. The bogie-side mounting portion 10 includes an upper mounting plate 11 located at the upper portion and a lower mounting plate 14 located at the lower portion. The upper mounting plate 11 of the bogie-side mounting portion 10 is provided with two upper bolt holes 12, a first bogie-side connection port 13, and a second bogie-side connection port 18. A bolt 19 can be inserted into the upper bolt hole 12. The first bogie-side piping 16 is connected to the first bogie-side connection port 13. A second bogie side piping 17 is connected to the second bogie side connection port 18. Two lower bolt holes 15 are provided in the lower mounting plate 14 of the bogie side mounting portion 10. Bolts 19 can be inserted into the lower bolt holes 15. The first bogie side piping 16 corresponds to the bogie side service brake piping, and the second bogie side piping 17 corresponds to the bogie side parking brake piping. The first bogie side connection port 13 corresponds to the service brake connection port, and the second bogie side connection port 18 corresponds to the parking brake connection port. The upper mounting plate 11 and the lower mounting plate 14 may be integral or separate, as long as they can be fixed to the bogie 5.

[0035] (First brake side pipe 26 and second brake side pipe 52) The unit brake device 101 includes, in addition to the first brake side piping 26, a second brake side piping 52 that supplies compressed air to the spring brake cylinder 50. The first brake side piping 26 is the same as the brake side piping 26 of the first embodiment. The second brake side piping 52 connects the intake port 50A of the spring brake cylinder 50 to the upper brake side mounting portion 60. The second brake side piping 52 is fixed to the housing portion 31 so as to connect the intake port 50A to the second bogie side connection port 18 when the housing portion 31 is attached to the bogie side mounting portion 10. The pipe holder 25 supports the second brake side piping 52 and is fixed to the outer surface of the housing portion 31. The second brake side piping 52 is supported at three points, the intake port 50A, the pipe holder 25, and the upper brake side mounting portion 60. The first brake side piping 26 corresponds to the service brake side piping, and the second brake side piping 52 corresponds to the parking brake side piping.

[0036] (Upper brake side mounting portion 60) As shown in FIG. 8, the housing 31 has an upper brake side mounting part 60 to which the bogie side mounting part 10 is attached. The upper brake side mounting part 60 is provided with a first brake side connection port 61 and a second brake side connection port 62. The first brake side connection port 61 is provided with an annular ring gasket 63. The ring gasket 63 protrudes from the surface of the upper brake side mounting part 60 and is crushed when attached to the bogie side mounting part 10. The first brake side connection port 61 connects the first bogie side connection port 13 and the first brake side piping 26. The second brake side connection port 62 is provided with an annular ring gasket 64. The ring gasket 64 protrudes from the surface of the upper brake side mounting part 60 and is crushed when attached to the bogie side mounting part 10. The second brake side connection port 62 connects the second bogie side connection port 18 and the second brake side piping 52.

[0037] The upper brake side mounting portion 60 has two screw holes 65. The bolts 19 are tightened into the screw holes 65. The first brake side connection port 61 and the second brake side connection port 62 are provided in a portion protruding laterally (to the left in the figure) from the housing portion 31. The upper brake side mounting portion 60 protrudes laterally from the housing portion 31. The first brake side connection port 61 and the second brake side connection port 62 are connected to this protruding portion. The housing portion 31 has a lower brake side mounting portion 66. The lower brake side mounting portion 66 has two screw holes 65.

[0038] The mounting surface S1 between the bogie side mounting portion 10 and the upper brake side mounting portion 60, the connection surface S2 between the first bogie side connection port 13 and the first brake side connection port 61, and the connection surface S2 between the second bogie side connection port 18 and the second brake side connection port 62 are on the same surface. The mounting surface S1 is the surface on which the screw holes 65 of the upper brake side mounting portion 60 are provided. The connection surface S2 is the surface on which the first brake side connection port 61 and the second brake side connection port 62 of the upper brake side mounting portion 60 are provided. The mounting surface S1 and the connection surface S2 are provided on the same surface of the upper brake side mounting portion 60.

[0039] (action) Next, the installation work of the unit brake device 101 will be described with reference to FIG.

[0040] As shown in Fig. 7, the bogie-side mounting part 10 is fixed to the cross beam 7 of the bogie 5. A first bogie-side connection port 13 and a second bogie-side connection port 18 are provided on an upper mounting plate 11 of the bogie-side mounting part 10. A first bogie-side piping 16 is connected to the first bogie-side connection port 13. A second bogie-side piping 17 is connected to the second bogie-side connection port 18. The positions of the first bogie-side piping 16 and the second bogie-side piping 17 are determined regardless of the installation state of the unit brake device 101.

[0041] The unit brake device 101 is attached to the bogie-side mounting part 10. The housing part 31 is attached to the bogie-side mounting part 10 in a state where the bogie-side mounting part 10 is fixed to the bogie 5. The screw hole 65 of the upper brake-side mounting part 60 is aligned with the upper bolt hole 12 of the upper mounting plate 11 of the bogie-side mounting part 10, and the screw hole 65 of the lower brake-side mounting part 66 is aligned with the lower bolt hole 15 of the lower mounting plate 14 of the bogie-side mounting part 10. The bolt 19 is inserted into the upper bolt hole 12 from the rear side of the bogie-side mounting part 10, and the bolt 19 is tightened into the screw hole 65 of the upper brake-side mounting part 60. The bolt 19 is inserted into the lower bolt hole 15 from the rear side of the bogie-side mounting part 10, and the bolt 19 is tightened into the screw hole 65 of the lower brake-side mounting part 66.

[0042] When the housing part 31 is attached to the bogie side mounting part 10, the ring gasket 63 of the first brake side connection port 61 is pressed against the first bogie side connection port 13, so that the first brake side connection port 61 and the first bogie side connection port 13 are tightly attached to each other. Thus, the first brake side piping 26 connects the intake port 20A of the air brake cylinder 20 to the first bogie side connection port 13. Since the first brake side piping 26 connected to the first bogie side connection port 13 does not need to be fixed to the side beam 6 of the bogie 5, the piping of the unit brake device 101 can be connected by simply installing the first bogie side piping 16 up to the bogie side mounting part 10.

[0043] Similarly, when the housing part 31 is attached to the bogie side mounting part 10, the ring gasket 64 of the second brake side connection port 62 is pressed against the second bogie side connection port 18, so that the second brake side connection port 62 and the second bogie side connection port 18 are in close contact with each other. Thus, the second brake side piping 52 connects the intake port 50A of the spring brake cylinder 50 to the second bogie side connection port 18. Since the second brake side piping 52 connected to the second bogie side connection port 18 does not need to be fixed to the side beam 6 of the bogie 5, the piping of the unit brake device 101 can be connected by simply installing the second bogie side piping 17 up to the bogie side mounting part 10.

[0044] Next, the effects of the second embodiment will be described. (2-1) When the housing unit 31 is attached to the bogie side mounting part 10, the first brake side piping 26 is connected to the first bogie side connection port 13 of the bogie side mounting part 10, and the second brake side piping 52 is connected to the second bogie side connection port 18 of the bogie side mounting part 10. Therefore, by fixing only the bogie side mounting part 10 to the bogie 5 without attaching the entire unit brake device 101 to the bogie 5, the positions of the first bogie side connection port 13 and the second bogie side connection port 18, which are the connection destinations of the first bogie side piping 16 and the second bogie side piping 17, relative to the bogie 5 are determined. Then, by attaching the housing unit 31 to the bogie side mounting part 10, the first brake side piping 26 and the second brake side piping 52 are connected to the first bogie side connection port 13 and the second bogie side connection port 18 of the bogie side mounting part 10, and the connection to the first bogie side piping 16 and the second bogie side piping 17 is completed. Therefore, since the work of laying the piping on the bogie side can be performed without temporarily attaching the unit brake device 101 in order to determine the position of the piping on the bogie 5, the work of attaching the unit brake device 101 becomes easy.

[0045] (2-2) If the mounting surface S1 between the bogie side mounting part 10 and the upper brake side mounting part 60, the connection surface S2 between the first bogie side connection port 13 and the first brake side connection port 61, and the connection surface S2 between the second bogie side connection port 18 and the second brake side connection port 62 have uneven shapes, the airtightness of the connection ports will decrease if a manufacturing error occurs. Therefore, since the mounting surface S1 and the connection surface S2 are on the same plane, the airtightness of the connection ports can be maintained even if a manufacturing error occurs.

[0046] (2-3) The first brake side connection port 61 and the second brake side connection port 62 are provided in the portion protruding laterally from the housing portion 31. This makes it easy to route the first brake side piping 26 and the second brake side piping 52.

[0047] (2-4) The housing portion 31 is provided with the pipe holder 25 that fixes the first brake side piping 26 and the second brake side piping 52. Therefore, by fixing the first brake side piping 26 and the second brake side piping 52 to the housing portion 31 rather than fixing them to the air brake cylinder 20 and the spring brake cylinder 50, respectively, the distance to the first brake side connection port 61 and the second brake side connection port 62 is shorter, so that the brake side piping can be stably supported.

[0048] As shown in FIG. 9, the second brake side connection port 62 provided on the upper brake side mounting part 60 may be provided in a portion protruding to the opposite side (the right side in the figure) from the first brake side connection port 61. The upper brake side mounting part 60 protrudes to both sides from the housing part 31. The first brake side connection port 61 is connected to the protruding portion on the left side in the figure of the upper brake side mounting part 60. The second brake side connection port 62 is connected to the protruding portion on the right side in the figure of the upper brake side mounting part 60. The second brake side piping 52 is provided along the side surface closer to the second brake side connection port 62. A piping holder supporting the second brake side piping 52 is fixed to the spring brake cylinder 50.

[0049] With this configuration, the position of the first bogie side piping 16 connected to the first brake side piping 26 and the position of the second bogie side piping 17 connected to the second brake side piping 52 can be aligned at the same height and fixed in an aligned state.

[0050] As shown in FIG. 10 , the second brake side connection port 62 may be provided on the lower brake side mounting part 66, in a portion that protrudes to the same side (the left side in the figure) as the first brake side connection port 61. The lower brake side mounting part 66 protrudes laterally from the housing part 31. The first brake side connection port 61 is connected to the protruding portion on the left side in the figure of the upper brake side mounting part 60. The second brake side connection port 62 is connected to the protruding portion on the left side in the figure of the lower brake side mounting part 66. The second brake side piping 52 is provided along the side surface closer to the second brake side connection port 62. The second brake side piping 52 is supported by a piping holder 25.

[0051] With this configuration, the first brake side piping 26 and the second brake side piping 52 can be gathered on the same side of the unit brake device 101, and the first brake side piping 26 can be connected to the upper brake side mounting portion 60, and the second brake side piping 52 can be connected to the lower brake side mounting portion 66.

[0052] Third embodiment Hereinafter, a third embodiment of the unit brake device will be described with reference to Figures 11 and 12. The unit brake device of this embodiment differs from the first embodiment in that an air intake port of the air brake cylinder is provided on the rear side. Below, the differences from the first embodiment will be mainly described.

[0053] (Unit brake device 1) 11, the unit brake device 111 includes an air brake cylinder 120 that outputs a braking force by air. The unit brake device 111 includes a transmission drive unit 130 that transmits the braking force output from the air brake cylinder 20 to a shoe head 137. The transmission drive unit 130 includes a hollow housing unit 131.

[0054] (Air brake cylinder 120) The air brake cylinder 120 includes a cylindrical cylinder 121 with a bottom. The cylinder 121 is connected to the right side of the housing part 131 in the figure. An intake port 120A that supplies compressed air into the cylinder 121 is provided at the bottom (right side in the figure). The intake port 120A is provided on the back side of the unit brake device 111. When compressed air is supplied to the cylinder 121, a braking force is output.

[0055] (Truck side mounting part 10) A bogie-side piping 16 for supplying compressed air from an air source is fixed to the cross beam 7 of the bogie 5. The unit brake device 1 includes a bogie-side mounting part 10 fixed to the bogie 5. A housing part 131 is attached to the bogie-side mounting part 10. The bogie-side mounting part 10 includes an upper mounting plate 11 located at an upper part and a lower mounting plate 14 located at a lower part. The upper mounting plate 11 of the bogie-side mounting part 10 is provided with two upper bolt holes 12 and a bogie-side connection port 13. A bolt 19 can be inserted into the upper bolt hole 12. The bogie-side piping 16 is connected to the bogie-side connection port 13 of the bogie-side mounting part 10. The lower mounting plate 14 of the bogie-side mounting part 10 is provided with two lower bolt holes 15. A bolt 19 can be inserted into the lower bolt hole 15. The upper mounting plate 11 and the lower mounting plate 14 may be integral or separate, so long as they can be fixed to the carriage 5.

[0056] (Brake side piping 126) As shown in Fig. 12, the unit brake device 111 includes a brake side piping 126. The brake side piping 126 connects the intake port 120A of the air brake cylinder 120 and the upper brake side mounting part 140. The brake side piping 126 is fixed to the housing part 131 so as to connect the intake port 120A and the bogie side connection port 13 when the housing part 131 is attached to the bogie side mounting part 10. The brake side piping 126 is supported at two points, the intake port 120A and the upper brake side mounting part 140. Since the distance between the intake port 120A and the upper brake side mounting part 140 is short, no pipe clamp is required.

[0057] (Upper brake side mounting portion 140) The housing part 131 has an upper brake side mounting part 140 to which the bogie side mounting part 10 is attached. A brake side connection port 141 is provided in the upper brake side mounting part 140. An annular ring gasket 142 is provided in the brake side connection port 141. The ring gasket 142 protrudes from the surface of the upper brake side mounting part 140, and is crushed when attached to the bogie side mounting part 10. The brake side connection port 141 connects the bogie side connection port 13 and the brake side piping 126.

[0058] The upper brake side mounting part 140 has two screw holes 143. The bolts 19 are tightened into the screw holes 143. The brake side connection port 141 is provided in a portion that protrudes laterally (to the left in the figure) from the housing part 131. The upper brake side mounting part 140 protrudes laterally from the housing part 131. The brake side connection port 141 is connected to this protruding portion. The housing part 131 has a lower brake side mounting part 144. The lower brake side mounting part 144 has two screw holes 143.

[0059] An attachment surface S1 between the bogie side attachment portion 10 and the upper brake side attachment portion 140 and a connection surface S2 between the bogie side connection port 13 and the brake side connection port 141 are on the same surface. The attachment surface S1 is the surface on which the screw hole 143 of the upper brake side attachment portion 140 is provided. The connection surface S2 is the surface on which the brake side connection port 141 of the upper brake side attachment portion 140 is provided. The attachment surface S1 and the connection surface S2 are provided on the same surface of the upper brake side attachment portion 140.

[0060] (action) Next, the installation work of the unit brake device 111 will be described with reference to FIG.

[0061] As shown in Fig. 11, the bogie-side mounting part 10 is fixed to the cross beam 7 of the bogie 5. An upper mounting plate 11 of the bogie-side mounting part 10 is provided with a bogie-side connection port 13. A bogie-side piping 16 is connected to the bogie-side connection port 13. The position of the bogie-side piping 16 is determined regardless of the installation state of the unit brake device 1.

[0062] The unit brake device 111 is attached to the bogie-side mounting part 10. The housing part 131 is attached to the bogie-side mounting part 10 in a state where the bogie-side mounting part 10 is fixed to the bogie 5. The screw hole 143 of the upper brake-side mounting part 140 is aligned with the upper bolt hole 12 of the upper mounting plate 11 of the bogie-side mounting part 10, and the screw hole 143 of the lower brake-side mounting part 144 is aligned with the lower bolt hole 15 of the lower mounting plate 14 of the bogie-side mounting part 10. The bolt 19 is inserted into the upper bolt hole 12 from the rear side of the bogie-side mounting part 10, and the bolt 19 is tightened into the screw hole 143 of the upper brake-side mounting part 140. The bolt 19 is inserted into the lower bolt hole 15 from the rear side of the bogie-side mounting part 10, and the bolt 19 is tightened into the screw hole 143 of the lower brake-side mounting part 144.

[0063] When the housing part 131 is attached to the bogie side mounting part 10, the ring gasket 42 of the brake side connection port 141 is pressed against the bogie side connection port 13, so that the brake side connection port 141 and the bogie side connection port 13 are in close contact with each other. Thus, the brake side piping 126 connects the intake port 120A of the air brake cylinder 120 to the bogie side connection port 13. Since the brake side piping 126 connected to the bogie side connection port 13 does not need to be fixed to the side beam 6 of the bogie 5, the piping of the unit brake device 1 can be connected by simply installing the bogie side piping 16 up to the bogie side mounting part 10.

[0064] Next, the effects of the third embodiment will be described. (3-1) When the housing part 131 is attached to the bogie side mounting part 10, the brake side piping 126, which is fixed to the housing part 131 and connected to the intake port 120A of the air brake cylinder 120, is connected to the bogie side connection port 13 of the bogie side mounting part 10. Therefore, if only the bogie side mounting part 10 is fixed to the bogie 5 without attaching the entire unit brake device 111 to the bogie 5, the position of the bogie side connection port 13 to which the bogie side piping 16 is connected relative to the bogie 5 is determined. Then, by attaching the housing part 131 to the bogie side mounting part 10, the brake side piping 126 is connected to the bogie side connection port 13 of the bogie side mounting part 10, and the connection to the bogie side piping 16 is completed. Therefore, the installation work of the unit brake device 111 can be performed without performing temporary installation of the unit brake device 111 to determine the position of the piping on the bogie 5, and therefore the installation work of the unit brake device 111 is facilitated.

[0065] (3-2) If the mounting surface S1 between the bogie side mounting part 10 and the upper brake side mounting part 140 and the connection surface S2 between the bogie side connection port 13 and the brake side connection port 141 have an uneven shape, the airtightness of the connection port will decrease if a manufacturing error occurs. However, since the mounting surface S1 and the connection surface S2 are on the same plane, the airtightness of the connection port can be maintained even if a manufacturing error occurs.

[0066] (3-3) The brake side connection port 141 is provided at the portion of the upper brake side attachment portion 140 that protrudes laterally from the housing portion 131. This makes it easy to route the brake side piping 126.

[0067] (Other embodiments) The above-described embodiments may be modified as follows: The above-described embodiments and the following modifications may be combined with each other to the extent that no technical contradiction occurs.

[0068] In the above embodiments, the pressing portion presses the shoe head from the brake cylinder via a brake lever. However, the brake cylinder may directly press the shoe head by omitting a force multiplier mechanism such as a brake lever.

[0069] In each of the above embodiments, the brake side piping 26 is provided separately from the air brake cylinder 20. However, the brake side piping may be provided integrally inside the air brake cylinder 20. For example, the piping is provided inside a casting that is integral with the air brake cylinder 20 and the housing portion 31.

[0070] In each of the above embodiments, the housing portion 31 includes the pipe holder 25 that fixes the brake-side pipe 26. However, as long as the brake-side pipe 26 can be supported by the intake port 20A and the upper brake-side mounting portion 40, the pipe holder 25 may be omitted.

[0071] In each of the above embodiments, as shown in Figures 5, 8, 9, 10 and 12, a screw hole 43, 65 (143) may be further provided at a position outside the brake side connection port 41, 61 (141) of the portion of the upper brake side attachment part 40, 60 (141) that protrudes laterally from the housing part 31 (131) to fix the upper brake side attachment part 40, 60 (141). Since the screw hole 43, 65 (143) is located at a position sandwiching the brake side connection port 41, 61 (141), the airtightness of the brake side connection port 41, 61 (141) can be improved.

[0072] In each of the above embodiments, the brake side connection port 41, 61 (141) is provided in a portion of the upper brake side mounting portion 40, 60 (141) that protrudes laterally from the housing portion 31 (131). However, the brake side connection port 41, 61 (141) may be provided between two screw holes 43, 65 (143) of the upper brake side mounting portion 40, 60 (141) without protruding laterally from the housing portion 31 (131). Since the screw holes 43, 65 (143) are located at a position sandwiching the brake side connection port 41, 61 (141), the airtightness of the brake side connection port 41, 61 (141) can be improved.

[0073] In each of the above embodiments, the brake side connection port 41, 61 (141) may be provided in a portion that protrudes above or below the position of the screw hole 43, 65 (143) of the upper brake side attachment portion 40, 60 (141).

[0074] In the above embodiments, the mounting surface S1 between the bogie side mounting portion 10 and the upper brake side mounting portion 40, 60 (140) and the connection surface S2 between the bogie side connection port 13 and the brake side connection port 41, 61 (141) are the same surface. However, the mounting surface S1 and the connection surface S2 may be formed in different positions and have an uneven shape.

[0075] In each of the above embodiments, if a product is made up of multiple objects, the multiple objects may be integrated, and conversely, if a product is made up of a single object, it may be divided into multiple objects. Regardless of whether the objects are integrated or not, it is sufficient that the product is configured to achieve the object of the invention. [Explanation of symbols]

[0076] S1: Mounting surface S2…Connection surface 1...Unit brake device 2…Bracelets 3...wheels 3A…Tread 5…Trolley 6…Side beam 7…Horizontal beam 10...Truck side mounting part 11...Upper mounting plate 12...Upper bolt hole 13...Truck side connection port, 1st trolley side connection port 14…Lower mounting plate 15…Lower bolt hole 16...Truck side piping, first truck side piping 17…Second bogie side piping 18…Second bogie side connection port 19…Bolt 20...Air brake cylinder 20A…Air intake 21...Cylinder 21A…Operating chamber 22…Release spring 23…Piston 23A…Connecting pin 25...Pipe holder 26…Brake side piping, first brake side piping 30...Transmission drive section 31…Housing section 31A…Holding part 31B…Connecting pin 32…Brake lever 32A…Spherical through hole 33…Spindle 34...Spherical bearing 35…Sheath 36...Push stick 36A…Connecting pin 37…Shoehead 38…Hanger 40…Upper brake side mounting part 41…Brake side connection port 42…Ring gasket 43…Screw hole 44…Lower brake side mounting part 50...Spring brake cylinder 50A…Air intake 51...Cylinder 52…Second brake side piping 60…Upper brake side mounting part 61…First brake side connection port 62…Second brake side connection port 63…Ring gasket 64…Ring gasket 65…Screw hole 66…Lower brake side mounting part 101...Unit brake device 111...Unit brake device 120...Air brake cylinder 120A…Air intake 126…Brake side piping 131…Housing section 137…Shoehead 140…Upper brake side mounting part 141…Brake side connection port 142…Ring gasket 143…Screw hole 144…Lower brake side mounting part

Claims

1. A brake cylinder that is driven by compressed air supplied from a bogie-side pipe fixed to the bogie; A pressing portion that is driven by the brake cylinder and presses the brake shoe against the wheel tread of the bogie; A housing portion covering the pressing portion; a carriage-side mounting portion to which the housing portion is attached in a state fixed to the carriage, the carriage-side mounting portion being provided with a carriage-side connection port to which the carriage-side piping is connected; a brake-side pipe for connecting an intake port of the brake cylinder and the bogie-side connection port, The brake-side piping is fixed to the housing part so as to connect the intake port and the bogie-side connection port when the housing part is attached to the bogie-side mounting part. Unit brake device.

2. The housing portion has a brake side mounting portion to which the bogie side mounting portion is attached, The brake-side mounting portion is provided with a brake-side connection port that connects the bogie-side connection port and the brake-side piping, The mounting surface between the bogie side mounting portion and the brake side mounting portion and the connection surface between the bogie side connection port and the brake side connection port are flush with each other.

2. The unit brake device according to claim 1.

3. The brake side connection port is provided in a portion protruding laterally from the housing portion.

3. The unit brake device according to claim 2.

4. The housing portion includes a pipe holder that fixes the brake side pipe.

3. The unit brake device according to claim 2.

5. The brake cylinder includes a service brake cylinder and a parking brake cylinder. The carriage side piping is a bogie-side service brake piping for supplying compressed air to the service brake cylinder; a carriage-side parking brake piping for supplying compressed air to the parking brake cylinder; The carriage side mounting portion is A service brake connection port to which the bogie side service brake piping is connected; a parking brake connection port to which the carriage-side parking brake piping is connected; The brake side piping is a service brake side pipe connecting an intake port of the service brake cylinder and a connection port of the bogie side service brake pipe; and a parking brake side pipe connecting the intake port of the parking brake cylinder and the connection port of the carriage side parking brake pipe. The unit brake device according to any one of claims 1 to 4.

6. A brake cylinder that is driven by compressed air supplied from a bogie-side pipe fixed to the bogie; A pressing portion that is driven by the brake cylinder and presses the brake shoe against the wheel tread of the bogie; A housing portion covering the pressing portion; a brake-side pipe connecting an intake port of the brake cylinder and a bogie-side connection port to which the bogie-side pipe is connected, The brake side pipe is fixed to the housing. Unit brake device.

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