CN105799726A - Manual relieving mechanism for rail vehicle oil cylinder - Google Patents
Manual relieving mechanism for rail vehicle oil cylinder Download PDFInfo
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- CN105799726A CN105799726A CN201410850303.2A CN201410850303A CN105799726A CN 105799726 A CN105799726 A CN 105799726A CN 201410850303 A CN201410850303 A CN 201410850303A CN 105799726 A CN105799726 A CN 105799726A
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- Prior art keywords
- oil
- oil duct
- cylinder body
- piston
- pull bar
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- 239000002828 fuel tank Substances 0.000 claims description 24
- 239000004519 grease Substances 0.000 claims description 21
- 238000007789 sealing Methods 0.000 claims description 9
- 239000000428 dust Substances 0.000 claims description 4
- 239000012530 fluid Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
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Abstract
The invention relates to a manual relieving mechanism for a rail vehicle oil cylinder. The manual relieving mechanism comprises an oil cylinder body. An oil chamber, a working oil channel and a pressure relieving oil channel are formed in the oil cylinder body, an oil piston is arranged in the working oil channel in a sealed mode and can move, a one-way valve is arranged on the part, at an upper oil channel opening of the pressure relieving oil channel, of the oil cylinder body, an oil channel of the one-way valve is communicated with the oil chamber, and the lower portion of the pressure relieving oil channel is communicated with the part, in front of the oil piston, of the working oil channel. An oil tank cover is installed on the oil cylinder body in a sealed mode, a pull rod is installed on the oil tank cover in a sealed mode and can axially move, the two ends of a hand-pull relieving spring arranged on the pull rod in a sleeving mode abut against the oil tank cover and a support of the pull rod respectively, the two sides of a lever are hinged to the support and a lever seat of the oil tank cover respectively, and one end of the lever is opposite to the one-way valve and is used for controlling the switching-on and switching-off of the one-way valve. The manual relieving mechanism is compact in structure, easy to operate and high in adaptability.
Description
Technical field
The present invention relates to a kind of hand relieving mechanism for rail vehicle oil cylinder, belong to rail vehicle brake rigging technical field.
Background technology
Brake rigging is as the crucial execution unit of rail traffic vehicles, it is the important guarantee of safe train operation, produces brake force by brake clamp, promote brake pad to compress braking dish, train momentum is changed into the frictional heat energy of disc, it is achieved the Brake stop of train.When the brake rigging of rail vehicle is at braking instruction system malfunctions, or when there is no power source when maintenance, owing to brake rigging is without automatic mitigation capability, it is necessary to install hand relieving mechanism on checking cylinder and realize hand relieving.Conventional hand relieving mechanism has two kinds: one is by alleviating drag-line and control pawl seat and locking spine tongue realizing hand relieving, and the hand relieving mechanism of this structure needs bigger operational torque, operation effort and reliability requirement is higher；Another kind is to adopt leverage, rope mechanism and pulley and cam mechanism etc., to strengthen the reliability of its operation, but this structure is not only complicated, and the componental movement parts of this mechanism need to be arranged on outside cylinder body, certain space can be taken,, can be subject to certain restrictions relatively limited at train bogie space ratio.
Summary of the invention
It is an object of the invention to provide a kind of compact conformation, simple to operate, the hand relieving mechanism for rail vehicle oil cylinder that the suitability is good.
The present invention is the technical scheme reaching above-mentioned purpose: a kind of hand relieving mechanism for rail vehicle oil cylinder, including cylinder body, grease chamber, work oil duct and pressure release oil duct it is provided with in cylinder body, oil piston seal is arranged in work oil duct and can move, cylinder body is provided with check valve at the oil duct junction place, top of pressure release oil duct, the oil duct of check valve communicates with grease chamber, and the bottom of pressure release oil duct communicates with the work oil duct of oil piston front portion；Oil tank cover sealing is arranged on cylinder body, tie-rod sealing is arranged in fuel tank cap and can move axially, the two ends pulling release spring being enclosed within pull bar withstand on the bearing of fuel tank cap and pull bar respectively, the both sides of lever are respectively hinged on the lever seat of bearing and fuel tank cap, and one end of lever is relative with check valve and is used for controlling the keying of check valve.
Wherein: described fuel tank cap is provided with drag link sleeve, tie-rod sealing is arranged on drag link sleeve and can move axially, bearing is arranged on pull bar bottom, and the two ends pulling release spring withstand on drag link sleeve and bearing respectively, and one end of dust cover is arranged on pull bar, the other end is arranged on drag link sleeve.
Described check valve includes nut cap, valve follower, valve seat and valve spring, nut cap is screwed on cylinder body and seals with cylinder body with sealing ring, the side of valve follower penetrates the oil duct of nut cap and connects with valve seat, the valve spring being arranged on cylinder body withstands on and makes valve seat connect with the lower end of nut cap sealing on valve seat, and when pulling alleviation, under valve follower, pressure valve seat makes pressure release oil duct communicate with the oil duct in nut cap.
With pouring orifice in described fuel tank cap, and pouring orifice place is provided with the first filter.
Being provided with alleviation rope support in described fuel tank cap, pull bar top is provided with bearing pin, alleviates rope sling and and passes perpendicularly through the through hole alleviating rope support top on bearing pin.
Described oily piston is connected with cylinder piston axle by guide pad, guide pad cylindrical in shape is covered on the connection shaft part of cylinder piston axle and is connected by bearing pin, bearing pin is positioned at the long slot bore of oil piston, latch is stifled to be enclosed within oil piston and blocks bearing pin, and form middle oil duct between guide pad and oil piston, and middle oil duct is communicated with grease chamber by the compensation oil duct on cylinder body.
The cylinder body of the present invention is provided with check valve, check valve is connected to pressure release oil duct, and the oil duct of check valve communicates with grease chamber again, and lever is hinged on the bearing of pull bar and the lever seat of oil cylinder cover, during hand relieving, pulling up pull bar, pull bar drives lever, presses open check valve under one end of lever, grease chamber is made to communicate with pressure release oil duct by the unlatching of check valve, so that the pressure oil in work oil duct is back to grease chamber, discharge oil pressure, it is achieved release of brake；Putting down pull bar, pull bar resets under the effect pulling release spring, and lever is replied to close check valve, has cut off pressure release oil duct and grease chamber, and hand relieving terminates.The present invention passes through to pull pull bar to drive lever motion to open and close check valve to realize release of brake, and compact conformation is alleviated simple to operate；Except the present invention is arranged on casing outside except part pull bar simultaneously, remaining moving component is arranged in cylinder body, takies bogie space little, has the good suitability.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, embodiments of the invention are described in further detail.
Fig. 1 is the present invention structural representation for the hand relieving mechanism of rail vehicle oil cylinder.
Fig. 2 is the A-A sectional structure schematic diagram of Fig. 1.
Fig. 3 is the I place structure for amplifying schematic diagram of Fig. 2.
Fig. 4 is the structural representation of fuel tank cap of the present invention.
Fig. 5 is the B-B sectional structure schematic diagram of Fig. 4.
Fig. 6 is that the C of Fig. 4 is to structural representation.
Fig. 7 is the II place structure for amplifying schematic diagram of Fig. 2.
Wherein: 1 cylinder block, 2 cylinder bodies, 2-1 grease chamber, 2-2 pressure release oil duct, 2-3 works oil duct, and 2-4 compensates oil duct, 3 alleviate rope support, 4 bearing pins, 5 pull bars, 6 dust covers, 7 drag link sleeves, 8 fuel tank cap, 8-1 lever seat, 9 pull release spring, 10 levers, 11 check valves, 11-1 valve follower, 11-2 nut cap, 11-3 valve seat, 11-4 valve spring, 12 second filters, 13 oil pistons, 14 middle oil ducts, 15 cylinder piston axles, 16 first filters, 17 bearings, 18 guide pads, 19 latches block up, 20 bearing pins.
Detailed description of the invention
Seeing shown in Fig. 1～7, the present invention is for the hand relieving mechanism of rail vehicle oil cylinder, including cylinder body 2, is provided with grease chamber 2-1, work oil duct 2-3 and pressure release oil duct 2-2 in cylinder body 2, owing to cylinder body 2 carries grease chamber 2-1 without increasing Hydraulic Station, compact conformation.As shown in Figure 2, oil piston 13 of the present invention is sealingly disposed in work oil duct 2-3 and can move, by extrude fluid in its anterior work oil duct for and brake clamp provides pressure oil, thus promoting brake lining to compress braking dish implement braking, or the pressure oil in its anterior work oil duct of release is released braking.See Fig. 2, shown in 7, cylinder body 2 of the present invention is sealingly mounted at the side of cylinder block 1, cylinder piston axle 15 is sealingly mounted on cylinder body 2, and cylinder piston axle 15 is connected with oil piston 13, oil piston 13 is driven to move by cylinder piston axle 15, thus the fluid extruded in the work oil duct of oil piston 13 front portion, it is achieved air pressure is converted into oil pressure.As shown in Figure 7, the oily piston 13 of the present invention is connected with cylinder piston axle 15 by guide pad 18, guide pad 18 cylindrical in shape is covered on the connection shaft part of cylinder piston axle 15 and is connected by bearing pin 20, bearing pin 20 is positioned at the long slot bore of oil piston 13, latch stifled 19 is enclosed within oil piston 13 and blocks bearing pin 20, oil duct 14 in the middle of being formed between guide pad 18 and oil piston 13, and centre oil duct 14 is communicated with grease chamber 2-1 by the compensation oil duct 2-4 on cylinder body 2, the compensated oil duct 2-4 of fluid in grease chamber 2-1, oil duct on middle oil duct 14 and oil piston 13 enters the work oil duct of oil piston 13 front portion；When fluid normal reflow, the fluid in the work oil duct 2-3 of oil piston 13 front portion is returned in grease chamber 2-1 with compensating oil duct 2-4 through middle oil duct 14 by the oil duct on oil piston 13.Cylinder body 2 of the present invention is provided with the second filter 12 on the top compensating oil duct 2-4.
See shown in Fig. 2～6, cylinder body 2 of the present invention is provided with check valve 11 at the oil duct junction place, top of pressure release oil duct 2-2, the oil duct of check valve 11 communicates with grease chamber 2-1, pressure release oil duct 2-2 bottom communicates with the work oil duct 2-3 of oil piston 13 front portion, is controlled connection and the partition of the grease chamber 2-1 in cylinder body 2 and pressure release oil duct 2-2 by check valve 11.See shown in Fig. 2～6, fuel tank cap 8 of the present invention is sealingly mounted on cylinder body 2, with pouring orifice in fuel tank cap 8, and pouring orifice place is provided with the first filter 16, pull bar 5 is sealingly mounted in fuel tank cap 8 and can move axially, the two ends pulling release spring 9 being enclosed within pull bar 5 withstand on the bearing 17 of fuel tank cap 8 and pull bar 5 respectively, namely the one end pulling release spring 9 withstands in fuel tank cap 8, the other end withstands on the bearing 17 of pull bar 5, the both sides of lever 10 are respectively hinged on the lever seat 8-1 of bearing 17 and fuel tank cap 8, namely the side of lever 10 is hinged on bearing 17, opposite side is hinged on the lever seat 8-1 of fuel tank cap 8, one end of lever 10 is relative with check valve 11 and is used for controlling the keying of check valve 11.Being provided with alleviation rope support 3 in fuel tank cap 8, pull bar 5 top is provided with bearing pin 4, alleviates rope sling and and passes perpendicularly through the through hole alleviating rope support 3 top on bearing pin 4.During hand relieving, by pulling the dynamic pull bar 5 of alleviation rope band to move upward, pull bar 5 drives lever 10, press open check valve 11 under one end of lever 10, make grease chamber 2-1 communicate with pressure release oil duct 2-2, so that the pressure oil in work oil duct 2-3 is back to grease chamber 2-1, release oil pressure, it is achieved release of brake；Putting down pull bar 5, pull bar 5 resets under the effect pulling release spring 9, and lever 10 replys to close check valve 11, cuts off pressure release oil duct 2-2 and grease chamber 2-1, and alleviation terminates.See shown in Fig. 2～6, fuel tank cap 8 of the present invention is provided with drag link sleeve 7, pull bar 5 is sealingly mounted on drag link sleeve 7 and can move axially, bearing 17 is arranged on the bottom of pull bar 5, the two ends pulling release spring 9 withstand on drag link sleeve 7 and bearing 17 respectively, namely the one end pulling release spring 9 withstands on drag link sleeve 7, the other end withstands on bearing 17, and one end of dust cover 6 is arranged on pull bar 5, the other end is arranged on drag link sleeve 7.
See Fig. 2, shown in 3, the check valve 11 of the present invention includes nut cap 11-2, valve follower 11-1, valve seat 11-3 and valve spring 11-4, nut cap 11-2 is screwed on cylinder body 2 and seals with sealing ring and cylinder body 2, the side of valve follower 11-1 penetrates the oil duct of nut cap 11-2 and connects with valve seat 11-3, and the valve spring 11-4 being arranged on cylinder body 2 withstands on the lower end making valve seat 11-3 and nut cap 11-2 on valve seat 11-3 and the sealing that connects；When pulling alleviation, pressure valve seat 11-3 under valve follower 11-1, valve seat 11-3 separates with nut cap 11-2, makes pressure release oil duct 2-2 communicate with the oil duct in nut cap 11-2 and realize pressure release, it is achieved hand relieving.
When braking instruction system malfunctions, or during vehicle maintenance passive delivery, by pulling alleviation mechanism, it may be achieved release of brake.The present invention is by pulling pull bar to drive lever motion to open and close check valve to realize release of brake, and compact conformation, alleviation work is simple, rapid operation；Except the present invention is arranged on casing outside except part pull bar simultaneously, remaining moving component is arranged in cylinder body, takies bogie space little, has the good suitability.
Claims (6)
1. the hand relieving mechanism for rail vehicle oil cylinder, it is characterized in that: include cylinder body (2), grease chamber (2-1) it is provided with in cylinder body (2), work oil duct (2-3) and pressure release oil duct (2-2), oil piston (13) is sealingly disposed in work oil duct (2-3) and can move, cylinder body (2) is provided with check valve (11) at the oil duct junction place, top of pressure release oil duct (2-2), the oil duct of check valve (11) communicates with grease chamber (2-1), the bottom of pressure release oil duct (2-2) communicates with the work oil duct (2-3) of oil piston (13) front portion；Fuel tank cap (8) is sealingly mounted on cylinder body (2), pull bar (5) is sealingly mounted at fuel tank cap (8) and above and can move axially, the two ends pulling release spring (9) being enclosed within pull bar (5) withstand on the bearing (17) of fuel tank cap (8) and pull bar (5) respectively, the both sides of lever (10) are respectively hinged on the lever seat (8-1) of bearing (17) and fuel tank cap (8), and one end of lever (10) is relative with check valve (11) and is used for controlling the keying of check valve (11).
2. the hand relieving mechanism for rail vehicle oil cylinder according to claim 1, it is characterized in that: described fuel tank cap (8) is provided with drag link sleeve (7), pull bar (5) is sealingly mounted at drag link sleeve (7) and above and can move axially, bearing (17) is arranged on pull bar (5) bottom, the two ends pulling release spring (9) withstand on drag link sleeve (7) and bearing (17) respectively, and one end of dust cover (6) is arranged on pull bar (5), the other end is arranged on drag link sleeve (7).
null3. the hand relieving mechanism for rail vehicle oil cylinder according to claim 1，It is characterized in that: described check valve (11) includes nut cap (11-2)、Valve follower (11-1)、Valve seat (11-3) and valve spring (11-4)，Nut cap (11-2) is screwed in cylinder body (2) and above and seals with cylinder body (2) with sealing ring，The side of valve follower (11-1) penetrates the oil duct of nut cap (11-2) and connects with valve seat (11-3)，The valve spring (11-4) being arranged on cylinder body (2) withstands on and makes valve seat (11-3) connect with the lower end of nut cap (11-2) sealing on valve seat (11-3)，When pulling alleviation, under valve follower (11-1), pressure valve seat (11-3) makes pressure release oil duct (2-2) communicate with the oil duct in nut cap (11-2).
4. the hand relieving mechanism for rail vehicle oil cylinder according to claim 1, it is characterised in that: with pouring orifice in described fuel tank cap (8), and pouring orifice place is provided with the first filter (16).
5. the hand relieving mechanism for rail vehicle oil cylinder according to claim 1, it is characterized in that: described fuel tank cap (8) is provided with alleviation rope support (3), pull bar (5) top is provided with bearing pin (4), alleviates rope sling and above and passes perpendicularly through the through hole alleviating rope support (3) top at bearing pin (4).
6. the hand relieving mechanism for rail vehicle oil cylinder according to claim 1, it is characterized in that: described oily piston (13) is connected with cylinder piston axle (15) by guide pad (18), guide pad (18) cylindrical in shape is covered on the connection shaft part of cylinder piston axle (15) and is connected by bearing pin (20), bearing pin (20) is positioned at the long slot bore of oil piston (13), latch stifled (19) is enclosed within oil piston (13) and blocks bearing pin (20), and oil duct (14) in the middle of being formed between guide pad (18) and oil piston (13), and centre oil duct (14) is communicated with grease chamber (2-1) by the compensation oil duct (2-4) on cylinder body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410850303.2A CN105799726A (en) | 2014-12-31 | 2014-12-31 | Manual relieving mechanism for rail vehicle oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410850303.2A CN105799726A (en) | 2014-12-31 | 2014-12-31 | Manual relieving mechanism for rail vehicle oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105799726A true CN105799726A (en) | 2016-07-27 |
Family
ID=56420527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410850303.2A Pending CN105799726A (en) | 2014-12-31 | 2014-12-31 | Manual relieving mechanism for rail vehicle oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105799726A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1138786A (en) * | 1979-10-15 | 1983-01-04 | Wayne G. Klasing | Hand brake mechanism adapted for use on a railway car |
| CN201334004Y (en) * | 2008-12-29 | 2009-10-28 | 中国汽车工程研究院有限公司 | Brake booster for monorail train |
| US20110266101A1 (en) * | 2007-01-31 | 2011-11-03 | Wabtec Holding Corp. | Parking brake assembly for railway vehicle brake system |
| CN202732795U (en) * | 2012-06-30 | 2013-02-13 | 南车戚墅堰机车车辆工艺研究所有限公司 | Energy-storage-type park-unit brake cylinder |
| CN204399198U (en) * | 2014-12-31 | 2015-06-17 | 常州南车铁马科技实业有限公司 | A kind of hand relieving mechanism for guideway vehicle oil cylinder |
-
2014
- 2014-12-31 CN CN201410850303.2A patent/CN105799726A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1138786A (en) * | 1979-10-15 | 1983-01-04 | Wayne G. Klasing | Hand brake mechanism adapted for use on a railway car |
| US20110266101A1 (en) * | 2007-01-31 | 2011-11-03 | Wabtec Holding Corp. | Parking brake assembly for railway vehicle brake system |
| CN201334004Y (en) * | 2008-12-29 | 2009-10-28 | 中国汽车工程研究院有限公司 | Brake booster for monorail train |
| CN202732795U (en) * | 2012-06-30 | 2013-02-13 | 南车戚墅堰机车车辆工艺研究所有限公司 | Energy-storage-type park-unit brake cylinder |
| CN204399198U (en) * | 2014-12-31 | 2015-06-17 | 常州南车铁马科技实业有限公司 | A kind of hand relieving mechanism for guideway vehicle oil cylinder |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: Xue Jia Zhen 213125 north of Jiangsu Province, Changzhou City Shun Road No. 19 Applicant after: CRRC CHANGZHOU TECH-MARK INDUSTRIAL Co.,Ltd. Address before: Xue Jia Zhen 213125 north of Jiangsu Province, Changzhou City Shun Road No. 19 Applicant before: CSR CHANGZHOU TECH-MARK INDUSTRIAL Co.,Ltd. |
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| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20170623 Address after: Xue Jia Zhen 213125 north of Jiangsu Province, Changzhou City Shun Road No. 19 Applicant after: CRRC CHANGZHOU TECH-MARK INDUSTRIAL Co.,Ltd. Applicant after: CRRC QISHUYAN INSTITUTE Co.,Ltd. Address before: Xue Jia Zhen 213125 north of Jiangsu Province, Changzhou City Shun Road No. 19 Applicant before: CRRC CHANGZHOU TECH-MARK INDUSTRIAL Co.,Ltd. |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160727 |