Spring energy storage brake cylinder

Abstract

The invention relates to a spring brake cylinder (100) for a brake of a rail vehicle, comprising: a cylinder housing (120); a spring piston (6) which can be moved axially within the cylinder housing (120) and which, on the one hand, can be moved by means of storage springs (14, 16) in order to actuate the brake in the event of a reduced pressure and, on the other hand, can be moved by means of a spring pressure chamber (18) which can be acted upon by a pressure medium in order to release the brake; the piston rod (24) can axially move along with the spring energy storage piston (6); the invention relates to an emergency release device for manually unlocking a brake in the absence of a pressure medium, said emergency release device having an emergency release actuation device and an emergency release mechanism (140) which can be actuated by the emergency release actuation device, said emergency release mechanism (140) having an adapter housing (150), the invention relates to an adapter housing (150), in which a coupling part (141), which is preloaded into a neutral position by means of a spring element (142), and a force transmission means, which is connected to an emergency release actuation device and the coupling part (141), are accommodated, the adapter housing (150) being securable to a housing cover (130) of a cylinder housing (120), the housing cover (130) of the cylinder housing (120) having a cylindrical receptacle (131), which is provided with a spring element (142), and a force transmission means, which is connected to the coupling part (141). The invention relates to an adapter housing (150) for a motor vehicle, comprising a housing cover (130) of a cylinder housing (120), which has a receptacle (190) that projects into the receptacle, into which a cylindrical part (151) of the adapter housing (150) can be inserted and which can be locked on the housing cover (130) of the cylinder housing (120) by means of a rotational movement about a rotational axis (D5) of the cylindrical part (151) of the adapter housing (150), during the rotational movement, a bayonet attachment (180) arranged on the coupling part (141) engages with the stop pawl (190) from behind.

Description

Technical Field

[0001] The present invention relates to a spring energy storage brake cylinder for a brake of a rail vehicle according to the preamble of claim 1. Background Art

[0002] Such a spring energy storage brake cylinder is used in particular as a component of a parking brake in a bogie of a rail vehicle. Such a spring energy storage brake cylinder has a spring energy storage piston that can move axially within a cylinder housing. The spring energy storage piston can be moved on the one hand by a storage spring to operate the brake in the event of a pressure drop, and on the other hand by a spring energy storage pressure chamber that can be loaded with a pressure medium to release the brake. A piston rod for operating the brake caliper can be axially moved by means of the spring energy storage piston.

[0003] Such a spring energy storage brake cylinder usually also has a manually operable, mechanical emergency release device that is used when the brake caliper braked by the spring energy storage brake cylinder is to be released in the absence of compressed air as an energy source. Such an emergency release device is controlled, for example, by a Bowden cable.

[0004] Such an emergency release device generally consists essentially of an emergency release operating device and an emergency release mechanism that can be operated by the emergency release operating device. The Bowden cable is manually operated, for example, with the emergency release operating device, and the emergency release mechanism is fastened to the cylinder housing of the spring energy storage brake cylinder.

[0005] The fastening of such an emergency release mechanism and the replacement of the Bowden cable fixed in the emergency release mechanism require access to the emergency release mechanism from at least two sides. On one side, the Bowden cable housing must be fixed to the emergency release mechanism, and on the opposite side of the emergency release mechanism, the Bowden cable itself must be connected to a coupling component that operates a mechanism for decoupling the spring energy storage piston from the piston rod.

[0006] Such accessibility from multiple sides can usually only be achieved with difficulty and particularly requires the removal of other components of the brake or the bogie if necessary. Summary of the Invention

[0007] The object of the present invention is to further improve the spring energy storage brake cylinder such that the assembly and maintenance of the emergency release device can be carried out in a simpler manner.

[0008] The object set is achieved by a spring energy storage brake cylinder for a brake of a rail vehicle having the features of claim 1.

[0009] The spring-loaded brake cylinder according to the invention has: a cylinder housing; a spring-loaded piston axially movable within the cylinder housing, which spring-loaded piston can be moved on the one hand by a storage spring to operate the brake in the event of a pressure drop and on the other hand can be moved by a spring-loaded pressure chamber which can be loaded with a pressure medium to release the brake.

[0010] The piston rod can be axially moved by means of the spring-loaded piston. In addition, the spring-loaded brake cylinder has an emergency release device for manually unlocking the brake in the absence of a pressure medium.

[0011] The emergency release device has an emergency release actuating device and an emergency release mechanism which can be actuated by the emergency release actuating device.

[0012] The emergency release mechanism has an adapter housing in which a coupling member pre-tensioned to a neutral position by a spring element and a force transmission member connected to the emergency release actuating device and the coupling member are accommodated.

[0013] The adapter housing can be fixed to the housing cover of the cylinder housing.

[0014] The housing cover of the cylinder housing has a cylindrical receiving portion which has a stop pawl protruding into the receiving portion. The cylindrical part of the adapter housing can be inserted into the cylindrical receiving portion. A bayonet attachment is arranged on the end face of the coupling member in the adapter housing. Thus, the adapter housing can be locked to the housing cover of the cylinder housing by a rotational movement about the axis of rotation of the cylindrical part of the adapter housing by engaging the stop pawl from behind by means of the bayonet attachment of the coupling member.

[0015] With such a constructed housing cover of the cylinder housing and the corresponding adapter housing of the emergency release mechanism, assembly and maintenance are achieved in a simple manner, namely by quickly fastening and separating the spring-loaded brake cylinder and the emergency release device.

[0016] In particular, due to the fixing of the adapter housing by means of a bayonet connection of the coupling member, the adapter housing can be pushed into the housing cover from the first side and locked to the housing cover by rotation, so that accessibility from the side of the housing cover opposite to the first side is not necessary.

[0017] Advantageous implementation variants of the invention are the subject of the dependent claims.

[0018] According to an advantageous implementation variant, the force transmission member is configured as a Bowden cable.

[0019] According to another preferred implementation variant, a Bowden cable housing surrounding the Bowden cable outside the adapter housing is fastened to the adapter housing by means of a locking plate, wherein the locking plate is releasably fastened to the cover of the adapter housing remote from the installation of the bayonet attachment.

[0020] This locking plate also enables assembly and maintenance in a simple manner, namely by quickly fastening and separating the emergency release mechanism and the emergency release actuating device.

[0021] According to an advantageous refinement, the locking plate is fastened to the cover of the adapter housing by means of screws that can pass through holes in the locking plate, wherein the holes are positioned such that the locking plate can pivot from its position fixing the Bowden cable housing to the release position about the screw neck of the screw, which serves as the axis of rotation, after loosening the screw.

[0022] This makes it possible to achieve that the screws holding the locking plate do not have to be completely unscrewed from the cover, but only loosened, and thus, the locking plate also does not have to be completely removed, which has the advantage that the individual fixing components do not have to be completely removed, but remain on the adapter housing to a certain extent in a loss-proof manner.

[0023] The screws themselves are also preferably held on the respective components in a loss-proof manner. Preferably, for this purpose, the screw shanks of the screws are each provided with lateral recesses.

[0024] According to another advantageous design, the cover of the adapter housing has at least one additional receiving portion for fixing an additional Bowden cable and Bowden cable housing.

[0025] This also enables the use of multiple Bowden cable connections on one such emergency release device in a simple manner. Description of the Drawings

[0026] The preferred embodiments are explained in more detail below with the aid of the drawings. Among them:

[0027] Figure 1 A schematic view of such a spring-loaded brake cylinder according to the prior art is shown,

[0028] Figure 2 A top view of the housing cover of the cylinder housing with an emergency release actuating device mounted thereon according to the prior art is shown,

[0029] Figure 3 An isometric schematic view of a variant embodiment of a spring-loaded brake cylinder according to the invention is shown, which has a cylinder housing, a housing cover, and an adapter housing mounted on the housing cover of the emergency release mechanism,

[0030] Figure 4 An isometric single view of the emergency release mechanism with a bayonet attachment mounted thereon is shown,

[0031] Figure 5 An isometric view of the adapter housing pushed into the receiving portion in the housing cover before rotational fixing is shown,

[0032] Figure 6 shows the corresponding view after the adapter housing is rotationally fixed to the housing cover and Figure 5 the corresponding view,

[0033] Figure 7 shows a side view of the adapter housing with a Bowden cable housing arranged thereon with the locking cover released, and

[0034] Figure 8 shows a cross-sectional view of the adapter housing shown in Figure 7 from a rotational perspective to show the coupling components, the spring elements, and the connection of the Bowden cable in the emergency release mechanism. DETAILED DESCRIPTION

[0035] In the following description of the drawings, terms such as up, down, left, right, front, rear, etc. only refer to the exemplary illustrations and positions selected in the corresponding drawings for the spring energy storage brake cylinder, housing cover, adapter housing, Bowden cable, etc. These terms should not be understood as restrictive, that is, these relationships may change due to different working positions or mirror-symmetrical designs, etc.

[0036] In Figure 1 this, the spring energy storage brake cylinder for a rail vehicle brake is generally denoted by the reference numeral 2. Such a spring energy storage brake cylinder 2 basically consists of a cylinder housing 4, in which a spring energy storage piston 6 is arranged to be axially movable. Here, two energy storage springs 14, 16 are arranged between the spring energy storage piston 6 and the cover 10 that closes the axial end of the cylinder housing 4. In addition, a spring energy storage pressure chamber 18 is constructed between the spring energy storage piston 6 and the cylinder housing 4, and this spring energy storage pressure chamber can be loaded with compressed air through an air interface in the circumferential surface of the cylinder housing 4.

[0037] The forces of these energy storage springs 14, 16 act on the spring energy storage piston 6 through the cover 10. A piston rod 24 is axially coupled to the spring energy storage piston 6, and this piston rod moves with the spring energy storage piston 6 in the non-emergency release operating state and presses against a brake caliper (not shown here) when the energy storage springs 14, 16 are relaxed.

[0038] To release the brake, compressed air is blown into the spring energy storage pressure chamber 18 through the air interface in the cylinder housing 4, which causes the spring energy storage piston 6 to move against the forces of the energy storage springs 14, 16 into the non-braking position, and the piston rod 24 moves into the non-braking position using the energy storage springs.

[0039] To be able to release the brake even without compressed air, an emergency release device 310 is fastened to the cylinder housing 4, as shown from Figure 2It can be seen that the emergency release device 310 can be actuated by an emergency release actuating device. Here, the emergency release mechanism is fixed in the region of the housing cover 10 of the cylinder housing 4.

[0040] For installation or maintenance, the emergency release mechanism must be assembled from both sides. More precisely, it is assembled with screws 3401 from the first side, and in addition, it is assembled from the second side, where the end of the Bowden cable is fixed on the second side with another screw 3402.

[0041] For installation or maintenance, the emergency release actuating device must also be fastened from both sides. More precisely, it is fastened with screws 3403 from the first side, and fastened from the second side, where the end of the Bowden cable is fixed on the second side with screw 339.

[0042] In the spring-accumulator brake cylinder 100 according to the invention, as exemplarily shown in Figure 3 the emergency release mechanism 140 can also be fixed on the housing cover 130 of the cylinder housing 120.

[0043] As especially shown in Figure 4 the emergency release mechanism 140 has an adapter housing 150, in which a coupling member 141 pre-tensioned to a neutral position by a spring element 142 and a force transmission member connected to the emergency release actuating device and the coupling member 141 are accommodated.

[0044] The force transmission member is configured as a Bowden cable 160 here.

[0045] To simply fasten the emergency release mechanism 140 on the cylinder housing 120 of the spring-accumulator brake cylinder 100, the housing cover 130 of the cylinder housing 120 has a cylindrical receiving portion 131, which has a stop pawl 190 protruding into the receiving portion, and the cylindrical part 151 of the adapter housing 150 can be inserted into the receiving portion.

[0046] As Figure 5 and Figure 6 shown, by the rotational movement of the adapter housing 150 about the axis of rotation D5 of the cylindrical part 151 of the adapter housing 150, the bayonet attachment 180 arranged on the coupling member 141 engages the stop pawl 190 from behind, so that the adapter housing 150 can be simply locked on the housing cover 130 of the cylinder housing 120. Figure 5 shows the adapter housing 150 before the rotational movement, while Figure 6 shows the adapter housing 150 after the rotational movement.

[0047] In this way, the adapter housing 150 can be fixed to the housing cover 130 of the cylinder housing 120 in a simple manner by being inserted from one side of the housing cover 130 of the cylinder housing 120 and then rotated, without accessing the side opposite to the receiving portion 131 in the housing cover 130.

[0048] When assembling the Bowden cable 160 with the emergency release mechanism 140 for coupling to the emergency release operating device, as can be seen in particular Figure 8 from, before assembling the bayonet attachment 180, the thickened end part 161 of the Bowden cable 160 is placed into a groove provided therefor in the coupling part 141 of the emergency release mechanism 140.

[0049] The screw 113 used to fix the bayonet attachment 180 to the coupling part 141 of the emergency release mechanism 140 simultaneously locks the end part 161 of the Bowden cable 160 to the coupling part 141 of the emergency release mechanism 140. As can also be Figure 8 seen from, the shank of the screw 113 is preferably constructed with a side recess, and is thus held in the bayonet attachment 180 in a somewhat loss-preventing manner.

[0050] To fix the Bowden cable housing 110 to the adapter housing 150, the Bowden cable housing 110 surrounding the Bowden cable 160 is fastened to the adapter housing 150 by means of a locking plate 170. The locking plate 170 is releasably fastened to a cover 152 mounted on the adapter housing 150 away from the bayonet attachment 180.

[0051] As Figure 7 shown, the locking plate 170 is fastened to the cover 152 of the adapter housing 150 by means of a screw 111 that can pass through a hole 171 in the locking plate 170.

[0052] The hole 171 is positioned such that after loosening the screw 111, the cover 152 can pivot from its position fixing the Bowden cable housing 110 to a release position about the screw neck of the screw 111 serving as a rotation axis. Preferably, the shank of the screw 111 is also side-recessed, and is thus held in the cover 152 in a somewhat loss-preventing manner.

[0053] As further shown in Figures 3 to 7 the cover 152 of the adapter housing 150 has another receiving portion for fixing another Bowden cable to the Bowden cable housing 112.

[0054] As further shown in Figure 3 and Figure 4As can be seen, the screw 114, which extends through the cover 152 and a part of the Bowden cable housing 110, is used to prevent the adapter housing 150 from being inadvertently unscrewed from the closed position of the bayonet connection formed by the bayonet attachment 180 and the detent pawl 190. Preferably, the shank of the screw 114 is also laterally recessed and is thus held in the adapter housing 150 in a somewhat anti-loss manner.

[0055] List of reference numerals

[0056] 2 Spring-loaded brake cylinder

[0057] 4 Cylinder housing

[0058] 6 Spring-loaded piston

[0059] 10 Housing cover

[0060] 14, 16 Energy storage springs

[0061] 18 Spring-loaded pressure chamber

[0062] 24 Piston rod

[0063] 100 Spring-loaded brake cylinder

[0064] 110, 112 Bowden cable housing

[0065] 111 Screw

[0066] 113, 114 Screws

[0067] 120 Cylinder housing

[0068] 130 Housing cover

[0069] 131 Receiving part

[0070] 140 Emergency release mechanism

[0071] 141 Coupling part

[0072] 142 Spring element

[0073] 150 Adapter housing

[0074] 151 Cylindrical part

[0075] 152 Cover

[0076] 160 Bowden cable

[0077] 161 End part

[0078] 170 Locking plate

[0079] 180 Bayonet attachment

[0080] 190 Detent pawl

[0081] x, y, and z directions

[0082] Rotation axis of the D5 cylindrical component

Claims

1. A spring energy storage brake cylinder (100) for a brake of a rail vehicle, the spring energy storage brake cylinder having: a cylinder housing (120); a spring energy storage piston (6) axially movable within the cylinder housing (120), the spring energy storage piston being movable on the one hand by energy storage springs (14, 16) to operate the brake in the event of a pressure drop and on the other hand by a spring energy storage pressure chamber (18) that can be loaded with a pressure medium to release the brake; A piston rod (24) capable of axial movement by a spring energy storage piston (6); An emergency release device for manually unlocking the brake in the absence of a pressure medium; The emergency release device has an emergency release operating device and an emergency release mechanism (140) that can be operated by the emergency release operating device, The emergency release mechanism (140) has an adapter housing (150), in which a coupling member (141) pre-tensioned to a neutral position by a spring element (142) and a force transmission member connected to the emergency release operating device and the coupling member (141) are accommodated, The adapter housing (150) can be fixed to the housing cover (130) of the cylinder housing (120), It is characterized in that the housing cover (130) of the cylinder housing (120) has a cylindrical receiving portion (131) with a stop pawl (190) protruding into the receiving portion. The cylindrical member (151) of the adapter housing (150) can be inserted into the receiving portion and can be locked to the housing cover (130) of the cylinder housing (120) by a rotational movement around the rotation axis (D5) of the cylindrical member (151) of the adapter housing (150). During the rotational movement, a bayonet attachment (180) arranged on the coupling member (141) engages the stop pawl (190) from behind.

2. The spring energy storage brake cylinder (100) according to claim 1, characterized in that The force transmission member is configured as a Bowden cable (160).

3. The spring energy storage brake cylinder (100) according to claim 2, characterized in that A Bowden cable housing (110) surrounding the Bowden cable (160) outside the adapter housing (150) is fastened to the adapter housing (150) by a locking plate (170), and the locking plate can be releasably fastened to a cover (152) of the adapter housing (150) installed away from the bayonet attachment (180).

4. The spring energy storage brake cylinder (100) according to claim 3, characterized in that The locking plate (170) is fastened to the cover (152) of the adapter housing (150) by a screw (111) that can pass through a hole (171) in the locking plate (170). The hole (171) is positioned such that the locking plate (170) can pivot around the screw neck of the screw (111) serving as the rotation axis to a release position after loosening the screw (111) from its position of fixing the Bowden cable housing (110).

5. The spring energy storage brake cylinder (100) according to claim 4, characterized in that The screw (111) is held on the locking plate (170) in a loss-preventing manner.

6. The spring energy storage brake cylinder (100) according to any one of the preceding claims, characterized in that The cover (152) of the adapter housing (150) has at least one additional receiving portion for fixing an additional Bowden cable and Bowden cable housing (112).

7. The spring energy storage brake cylinder (100) according to any one of the preceding claims, characterized in that The bayonet attachment (180) can be fixed to the coupling member (141) by a screw (113), and the screw (113) fixes the end member (161) of the Bowden cable (160) in a receiving portion in the coupling member (141) in a manner protruding into the area of the coupling member (141).

8. The spring energy storage brake cylinder (100) according to claim 7, characterized in that The screw (113) is held on the bayonet attachment (180) in a loss-preventing manner.

9. The spring energy storage brake cylinder (100) according to any one of the preceding claims, characterized in that A screw (114) extending through the cover (152) of the adapter housing (150) and a part of the Bowden cable housing (110) is held in the adapter housing (150) in a loss-preventing manner.

10. The spring energy storage brake cylinder (100) according to any one of claims 5, 8 or 9, characterized in that The screw rods of the screws (111, 113, 114) have side recesses.

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