Title of Invention

"ABNORMAL RIDING DETECTOR FOR VACUAM/AIR BRAKED RAILWAY VEHICLES"

Abstract This invention relates to abnormal riding detector for vacuum/air braked railway vehicles characterized in that at least a single spring loaded mass (2) disposed into a guide (1A) of the housing (1) of the device, a sealed pressure chamber housing (15) being connected to said housing that the central portion thereof, having a non return air filling valve (23) provided therewith being disposed into the lower portion of said housing, a diaphragm (14) being provided at the top of said central portion to be pierced by the sharp point (11) locking means (27-30) being provided in the upper portion of the housing means (31-35) being provided in the lower portion of said sealed pressure chamber housing to close, open and re-close the inner end of the brake/train pipe connector (19) provided in the lower portion of said sealed pressure chamber housing and holes (22) being provided in said lower portion of the sealed pressure chamber.
Full Text This invention relates to an abnormal riding detector for vacuum/air braked railway vehicles. The device is used to stop a train soon after one or more of its vehicles/locomotives have derailed without human attention, so as to minimize damage to Railway track, vehicles, other railway assets, commodities or passengers being carried in the vehicles.
Since derailment of railway trains can neither be predicted nor eliminated the main object of the present invention is to propose a means to overcome this disadvantage to a great extent.
Therefore the main object of the present invention is to propose a device to initiate braking action, to stop the train in shortest possible time and distance after any abnormal riding is experienced by the vehicle(s) due to initiation of derailment or otherwise, irrespective of human observation and response.
According to this invention there is provided abnormal riding detector for vacuum/air braked railway vehicles characterized in that at least a single spring loaded mass disposed into a guide of the housing of the device, a sealed pressure chamber housing being connected to said housing that the central portion thereof, having a non return air filling valve provided therewith being disposed into the lower portion of said housing, a diaphragm being provided at the top of said central portion to be pierced by the sharp point provided with the lower end of said mass upon experiencing the acceleration beyond the threshold value by the device, locking means being provided in the upper portion of the housing of
the device to lock said mass so as to prevent the unwarranted puncturing of said diaphragm, means being provided in the lower portion of said sealed pressure chamber housing to close, open and re-close the inner end of the brake/train pipe connector provided in the lower portion of said sealed pressure chamber housing, holes being provided in said lower portion of the sealed pressure chamber for connecting the inner end of said connector with the atmosphere on puncturing of the diaphragm provided at the central portion of said sealed pressure chamber housing.
In accordance with this invention the device has at least one spring loaded mass provided in the guide of the housing, of the device. A sealed pressure chamber housing is secured to the bottom end of the housing such that the upper portion of the sealed pressure chamber is disposed within the lower portion of the housing. A non-return air filling value is provided near the top end of the sealed pressure chamber housing. A diaphragm is provided at the top end of the sealed pressure chamber housing such that to be pierced by a sharp point provided at the bottom end of the mass upon experiencing the acceleration above the threshold valve by the device. Locking means are provided in the upper portion of the housing of the device to lock mass to avoid unwarranted puncturing of the diaphragm. Means
are provided in the lower portion of the sealed pressore chamber housing for closing and openmg and re-closing the inner end of the break/tain pipe connector provided in the lower portion of said sealed pressure chamber housing. Holes are provided in the lower portion of the sealed pressure chamber for connecting me inner end of said connector with the atmosphere on puncturing of the diaphragm provided at the top end of the sealed pressure chamber housing.
A device for use to stop a train in case of derailment of a vehicle according to a preferred embodiment is herein described and illustrated in the accompanying drawings wherein:
Fig. 1 shows the sectional elevation of the device suitable for air braked and vacuum braked vehicles for sensing accelerations in vertical direction only with manual unlocking i
Fig. 2 shows the sectional elevation of the device suitable for air braked vehicles for sensing accelerations in vertical direction only with automatic unlocking means.
Fig. 3 shows sectional elevation of the device with automatic unlocking means according to an option.
Fig. 4 shows the device suitable for air braked and vacuum braked vehicles for sensing vertical and lateral accelerations with manual unlocking means.
Fig.5A shows die sectional view of the manual locking means according to an option.
Fig.5B shows die sectional view of die manual locking means according to snodwr option.
Fig. 6 shows die sectional view of the automatic locking means according to an option.
Fig. 7 shows sectional elevation of die means for closing and opening of die brake/train pipe.
Referring to drawings particularly fig. 1 die device has a housing 1, which is adapted to be secured to the underfiame of a railway vehicle (not shown). A mass 2 held by a spring 4 and magnets or spring 4 are provided movabry in guide 1A with end cover 12 fixed to housing 1. An elastomeric washer 26 is provided between the spring 4 and mass 2. A sharp point 11 is fixed at die bottom of mass 2. A sealed pressure chamber housing 15 is fixed to roe bottom of housing Iwidi a gasket/seal in between. A passage 13 in sealed pressure chamber housing 15 is closed with a dun diaphragm 14 and held by a ring 21 fixed to end of housing 15. Passage 13 is connected to a
non-return air-filling valve 23, fixed in sealed pressure chamber housing IS. The mouth of non-return air-filling valve 23 is closed with a rubber washer 24 and sealing nut 25. The sealed pressure chamber 15A is charged with dry compressed air/ gas with the help of the non-return air-filling valve 23. The passage 13 is connected to the sealed pressure chamber ISA of sealed pressure chamber housing IS, in which a disc 16 bonded to diaphragm 17 are provided movably. The diaphragm 16 being secured to die sealed pressure chamber housing IS with a ring 18. The brake/tram pipe connector 19 is placed close to the diaphragm 17 so that it gets closed when the sealed pressure chamber ISA is charged with compressed aii/gas. A spring 20 is provided over the Brake pipe /train pipe connector 19. The passage 36 of the brake pipe connector 19 is coonectable on the other end to the brake pipe or train pipe of die rail vehicle. Openings 22 and 22A are provided in the brake pipe /train pipe connector 19 and sealed pressure chamber housing IS respectively for connecting the space between Brake /train pipe connector 19 and sealed pressure chamber housing IS to atmosphere. A screw 27 is provided on any side of housing 1 along with a lock nut 28 and a sealing washer 29. The screw 27 passes through a threaded hole in housing 1 and engages in the corresponding recess provided in vertical mass 2 to lock the mass in inactive position. The screw 27 is covered with a protection cover 30 secured to housing 1. The housing 1 and sealed pressure chamber housing IS
are fixed with sealing gaskets/ rubber washers to provide a dust free environment in the device. Means for closing the opening of the brake pipe/train pipe connector 19 with diaphragm 17 manually are provided through a screw 31 provided in a threaded hole on a side of housing 15coaxial with diaphragm 17. The screw 31 can be moved inward so as to press a bellow/diaphragm 33 secured to housing 15 with ring 34. A lock nut 32 and a small handle/wheel 35 are provided with the screw 31.
Reference is now made to fig. 2 wherein the device according to an option and with automatic means for unlocking of vertical mass suitable for air braked vehicles only is shown. The manual unlocking means shown in fig.1 as 27, 28, 29 and 30 are not provided in this option and instead automatic unlocking means are provided by connecting the brake pipe passage 40 to a pressure chamber 43 in housing 1 by means of pipe 42. The pressure chamber 43 built in housing 1 is closed by a diaphragm 44 secured by ring 45. A lever 46 is pivotally provided around pin 48 in bush 49 on an extension bracket 50 of housing 1'.
The lever 46 is held with a tension spring 55. The locking pin 51 passes through a hole in lever 46. The lever 46 is provided with lock collw/circlip 52. The unlocking arrangement is covered with a protection cover 30 secured to housing along with a seal/gasket The locking pin 51 passes through a bush 54 provided in an opening on the side of housing 1 and engages in a corresponding recess in vertical mass 2.
Fig. 3 shows another option of the device suitable for air braked vehicles only, which is sensitive to accelerations in vertical direction only with automatic unlocking means. The device is similar to that shown in fig. 2 with the provision of diaphragm 17 and due 16 placed in a horizontal plane instead of vertical plane and break pipe connector/train pipe connector 19 being provided with aright angle bend
According to another embodiment, the device is adapted with means for sensing lateral acceleration in addition to vertical acceleration as shown in fig. 4. It consists of housing 1 having vertical and lateral guides 1A and IB. Vertical mass 2 and two lateral masses 6 are provided movably in the housing 1. The vertical mass 2 is provided with guide rings 3 and held with a spring 4 along with an elaatomeric washer 13 and/or permanent magnet S. An end ring 12 being fixed inside housing 1 for supporting the spring 4. The lateral masses 6 are provided with guide rings 7 and held with permanent magnets 8 and/or springs 9 along with elastomeric washers 37. The lateral masses are provided with end covers 10 fixed to housing 1 with gaskets/rubber seals. A sharp point 11 is fixed on the bottom of vertical mass 2. A sealed pressure chamber housing 15 is fixed at the bottom face of housing 1 with gasket/ seal. The housing IS has a passage 13, top end of which is provided with a thin diaphragm 14 secured to die projected end of housing 15 with a ring 21. The other end of passage 13 is connected to sealed pressure chamber 15A in sealed pressure chamber housing 15, in which a disc 16 bonded with diaphragm 17 is placed movably. The diaphragm 17 being
secured to sealed pressure-housing 15 with a securing ring 18. The brake pipe connector 19 is provided on any side of sealed pressure chamber housing 15. One end of Brake pipe/train pipe connector 19 is placed close to the diaphragm 17 so that it gets closed when the sealed pressure chamber 21 is charged with compressed air/gas. A spring 20 is provided over the Brake pipe connector/train pipe connector 19. The passage 36 of the brake pipe connector 19 is connectable on the other end to the brake pipe or train pipe of the rail vehicle. Openings 22 and 22A are provided in the brake pipe /train pipes connector 19 and sealed pressure chamber housing 15 respectively for connecting the space between Brake /train pipe connector 19 and sealed pressure chamber housing 15 to atmosphere. The passage 13 is connected to a non-return air-filling valve 23, of the automobile tyre type, provided on side of sealed pressure chamber housing 15. The non-return air-filling valve 23 is provided with a rubber washer 24 and sealing nut 25. The sealed pressure chamber 21 is charged with dry compressed air/ gas. A screw 27 is provided on any side of housing 1 along with a lock nut 28 and a sealing washer 29. The screw 27 passes through a threaded hole in housing 1 and engages in the corresponding recess provided in vertical mass 2. The unlocking screw arrangement is covered with a protection cover 30 secured to housing 1. The housing 1, Healed pressure chamber housing 15 and end covers 10 are fixed with sealing gaskets/ rubber washers to provide a dust free environment in the device. Means for closing the opening of the brake pipe/train pipe connector
19 with diaphragm 18 manually are provided through a screw 31 provided in a threaded hole on a side of housing 15 coaxial with diaphragm 17. The screw 31 can be moved so as to press a bellow/diaphragm 33 secured to housing 15 with ring 34. A lock nut 32 and, handle/wheel 35 are provided on the screw 31. Manual unlocking means as described herein above in the description with respect to fig.1 can be replaced with automatic unlocking means shown in fig. 2 and 3 for locking and unlocking of vertical mass 2 for air braked vehicles in tiie device shown in fig. 4.
Fig. 5 A shows another option of manual unlocking means, which can be provided with any of the devices shown hi figs. 1 and 4. The vertical mass 2 is locked with locking pin 60, which is pushed toward housing 1 in position by a spring 61 held against support nut 62 fixed on the side of housing land collar of pin 60. The locking pin 60 is provided with a lateral pin 65, and locking pin 60 can be kept in one of the two positions on fiat cam built in the projection on side of housing 1. The locking pin 60 has a pulling ring 63 for pulling and rotating the locking pin 60 in unlocked/locked position. The unlocking arrangement is covered with a protection cover 64 with seal/ gasket attached to housing 1.
FigSg shows another option of manual unlocking means which can be provided with any of the devices shown in figs. 1 and 4. The vertical mass is locked with locking bolt 66 and lock nut 67 running in threaded hole of housing 15. The locking means 27,28,29,30 shown in fig. 1 are not provided.
Fig. 6 shows another option of automatic unlocking means. The opening 40 in brake pipe connector 19 is connected to pressure chamber 72 provided with the housing 1 through the connecting pipe 76. The pressure chamber 72 is closed with a diaphragm 73 and secured to housing 1. A lever 75 is provided to pivot around pin 74 in a bush 79 provided in a projection of housing 1. The lever passes through an opening in the projection of housing 1 so as to be close to diaphragm 73. A lock pin 70 passes through bush 71 fixed in housing 1 and a hole at the other end of lever 75. A spring 77 held between collar of pin 70 and the protection cover 78 presses the pin 70 in wards. The protection cover 78 is fixed to housing 1 and pressure chamber 72 with gasket to make it dust proof
Fig. 7 shows an option for manually closing the train/brake pipe connector 19 with diaphragm 17. In this arrangement bellow /diaphragm 33 is secured to housing 15 with ring 34. A spindle 81 passes through an opening on the side of housing 15. An operating lever 83 pivots around pin 84 and is pressed by a spring 82. The operating lever 83 is held in outward position by a retaining pin 85 passing through it and a corresponding hole in a projection of sealed pressure housing 15.
The device(s) are delivered in locked condition for transportation, handling and mounting. The device(s) is/ are fixed to the under
frame of a rail vehicle at suitable locations, generally one for a four wheeled vehicle arid two for a bogie vehicle and brake pipe connector/train pipe connector 19 is connected to brake pipe/ train pipe of the vehicle with the help of a connecting pipe, not shown (through an isolating valve optionally). In case of device provided with manual unlocking means, the protection cover 30 is removed and manual unlocking means operated by unscrewing the lock nut 29, rotating the locking screw 27 outwards as shown in fig. 1 and 4. In the other option shown in fig. 5 it is unlocked by pulling and rotating the locking pin 60. rrhe device comes into operative condition. The devices with automatic unlocking means shown in fig. 2 and 3 do not require any unlocking manually after mounting of the device. The device shown in fig.l, 2, and 3 keeps the end of the brake pipe /train pipe connector 19 closed as long as the vehicle does not experience any acceleration higher than the threshold value, due to pressure of air/gas inside sealed pressure chamber 15A On experiencing any acceleration higher than threshold value the vertical mass 2 moves so as to puncture the diaphragm 14, resulting in sudden drop in air/gas pressure in the sealed pressure chamber 15A. In case of device shown in fig. 4, the movement of lateral masses 6 on experiencing lateral acceleration higher than threshold value is converted into movement of vertical mass 2 by cam action on the tapered surface provided at the end of mass 2. These results in moving the diaphragm 17 inward, allowing a connection between train pipe/braku pipe opening 36 being established with the atmosphere through openings 22 and 22A Thus the vacuum in train pipe or pressure in brake pipe is destroyed resulting in application of brakes on the derailed vehicle.
Adjoining vehicles also sense this drop in vacuum or in Brake Pipe pressure gradually and application of brakes on these vehicles also starts. The train driver sensed the drop in vacuum or in Brake Pipe pressure after some time and he can also use his emergency brake application means for stopping the train. After ;ui actuation the device(s) of the relevant vehicles, the device(s) need to be replaced by new /recycled devices).
For the vehicles to be able to operate temporarily brake/train pipe closing means as provided in fig. 1, 2, 3 and 4 are operated by unscrewing the lock nut 32 and tightening the screw 31 fully, to close the end of train pipe' connector/ brake pipe connector 19 with diaphragm 17. In the other optional arrangement as shown in fig. 7 the retaining pin 85 is removed and the force of spring 82 presses die spindle 81 inwards and closes the diaphragm 17 through bellow 33.





I Claim:
1. Abnormal riding detector for vacuum/air braked railway vehicles characterized in that at least a single spring loaded mass (2) disposed into a guide (1A) of the housing (1) of the device, a sealed pressure chamber housing (15) being connected to said housing that the central portion thereof, having a non return air filling valve (23) provided therewith being disposed into the lower portion of said housing (1), a diaphragm (14) being provided at the top of said central portion to be pierced by the sharp point (11) provided with the lower end of said mass (2) upon experiencing the acceleration beyond the threshold value by the device, locking means (27-30) being provided in the upper portion of the housing of the device to lock said mass so as to prevent the unwarranted puncturing of said diaphragm, means (31-35) being provided in the lower portion of said sealed pressure chamber housing to close, open and re-close the inner end of the brake/train pipe connector (19) provided in the lower portion of said sealed pressure chamber housing, holes (22) being provided in said lower portion of the sealed pressure chamber (15) for connecting the inner end of said connector with the atmosphere on puncturing of the diaphragm provided at the central portion of said sealed pressure chamber housing (15).
2. A device as claimed in claim 1 wherein a plurality of masses (2 and 6)
are provided in the respective vertical and lateral guides of the housing
(1).
3. A device as claimed in claim 1 wherein said locking means comprises
manual locking means having a screw (27) adapted to be provided in the
threaded hole provided in side of the housing, a lock nut (28) and cover
(30) are provided to lock and to protect said screw, said manual means
also comprises a locking pin (60) provided in the housing of the device
slidably, a spring (61) is provided between the support nut and the
collar (65) of the locking pin, a transverse pin (63) is provided at the
outer end of said locking pin such that to keep the locking pin in the
locked or unlocked position upon actuation of said pin by an operating
ring provided with said locking pin manually.
4. A device as claimed in claim 1 wherein said recesses are provided in the
middle portion of said mass to house the locking screw or pin therein.
5. A device as claimed in claim 1 wherein said means to close, open and re-
close the inner end of the connector comprises a diaphragm (16)
disposed within the sealed pressure chamber of the sealed pressure
chamber housing such that to be pressed by a screw (31) provided with
said sealed pressure chamber has a bellow (33) is provided between the
screw and the sealed pressure chamber.
6. A device as claimed in claim 1 wherein said locking means comprises
automatic locking means having a locking pin (51) adapted to be
displaced by a spring loaded lever (46) pivoted to the housing to be
actuated by a diaphragm (44) provided in a pressure chamber (43) being
connected to the brake pipe, through a connecting pipe (42) and, said
automatic locking means comprises a spring loaded locking pin (70)
adapted to be displaced by a lever (75) upon actuation of the same by a
diaphragm (73) disposed into a pressure chamber secured to the
housing of the device, said pressure chamber is connected to the brake
pipe connector through a connecting pipe (76).
7. A device as claimed in claim 1, wherein a spring (20) is provided around
the inner end of the train pipe connector to displace the diaphragm (17)
to connect the train pipe to the atmosphere upon puncturing the
diaphragm provided at the top end of the central portion of sealed
pressure chamber housing.
8. A device as claimed in claim 3, wherein said manual locking means
comprises a locking bolt (67) and a lock nut provided in a threaded hole
in said sealed pressure chamber housing to keep the said vertical mass
in locked or unlocked condition.
9. A device as claimed in claim 5, wherein said closing, opening and
reclosing means comprises a sliding pin (81) adapted to be pressed by a
spring (82) loaded lever (80) upon removing the retaining pin (85) so as
to reclose the inner end of the brake pipe/train pipe connector.
10. Abnormal riding detector for vacuum/air braked railway vehicles
substantially as herein described.

Documents:

1256-del-1999-abstract.pdf

1256-del-1999-claims.pdf

1256-del-1999-complete specificaation (granted).pdf

1256-del-1999-correspondence-others.pdf

1256-del-1999-correspondence-po.pdf

1256-del-1999-description (complete).pdf

1256-del-1999-drawings.pdf

1256-del-1999-form-1.pdf

1256-del-1999-form-19.pdf

1256-del-1999-form-2.pdf

1256-del-1999-form-3.pdf

1256-del-1999-gpa.pdf


Patent Number 244124
Indian Patent Application Number 1256/DEL/1999
PG Journal Number 47/2010
Publication Date 19-Nov-2010
Grant Date 18-Nov-2010
Date of Filing 17-Sep-1999
Name of Patentee C.M.DUTT
Applicant Address 30,RAILWAY COLONY,S.P.MARG, NEW DELHI-110021.INDIA.
Inventors:
# Inventor's Name Inventor's Address
1 C.M.DUTT 30,RAILWAY COLONY,S.P.MARG, NEW DELHI-110021.INDIA.
PCT International Classification Number B61L 3/00
PCT International Application Number N/A
PCT International Filing date
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 NA