CN201089464Y - Air-pocket reset retarder - Google Patents
Air-pocket reset retarder Download PDFInfo
- Publication number
- CN201089464Y CN201089464Y CNU200720015433XU CN200720015433U CN201089464Y CN 201089464 Y CN201089464 Y CN 201089464Y CN U200720015433X U CNU200720015433X U CN U200720015433XU CN 200720015433 U CN200720015433 U CN 200720015433U CN 201089464 Y CN201089464 Y CN 201089464Y
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- China
- Prior art keywords
- piston
- air bag
- valve
- piston rod
- resets
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- Expired - Fee Related
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Abstract
The utility model relates to an airbag resetting retarder as speed control equipment in a railway yard, which consists of a guiding shell body and a sliding oil cylinder. A spherical or tapered pressure valve and a piston rod and a piston with a split type structure are adopted; the external thread of a valve seat and the internal thread of the piston rod are used to clamp the piston. A return valve plate is directly arranged on a step of the piston rod. The lower part of the piston is provided with a resetting airbag with compressed gas; the rest of the space is filled with hydraulic oil. When the valve applies work, the process of nitrogen compression is saved, thereby applying work fully and having big brake power. In the process of production and maintenance, no air inflation and compression is needed; no air leakage fault is produced in use. The contact part between the guiding shell body and a steel rail is provided with a locator card; the impact force of wheels is directly transferred to the steel rail to improve a stress state of mounting bolts and avoid the bolts from being broken. The retarder has reasonable structure, simple production, safety, reliability and convenient maintenance.
Description
Affiliated technical field
The utility model relates to the deceleration top that a kind of rail yard uses, and belongs to rail yard speed control device field.
Background technology
At present, the known railway top of slowing down is a kind of oil gas mixing apparatus.In the sliding oil cylinder on top that slows down, be filled with hydraulic oil and compressed nitrogen.During this deceleration top work, all with oil gas mixture as working medium, also all have two common problems simultaneously.The one, when wheel has just pressed the head on the top of slowing down, in the process that portion's pressure rises, the process of a compressed nitrogen is arranged inevitably within it.When reaching the response pressure of pressure valve, internal pressure just begins acting.This section working stroke of loss, influences braking effect by when just wheel being produced braking force one section of arm of force maximum.The 2nd, the sealing of gas is much more difficult with respect to liquid, causes gas leakage easily, makes deceleration top early failure.In addition, known deceleration number at most is to be fixed on the rail belly with 2 groups of hold-down bolts, and the problem that this mounting means exists is that the bolt shearing force of bearing is very big, causes hold-down bolt to fracture easily, making the top inefficacy of slowing down.Also have stress point with the top of slowing down to be placed on the rail foot edge, this scheme has improvement to hold-down bolt is stressed, but causes rail stressed unreasonable.
Summary of the invention
In order to overcome the above-mentioned shortcoming on the existing top of slowing down, the utility model proposes a kind of air bag homing position type deceleration top.Change is with the design plan of oil gas mixture as working medium, as working medium, as resetting power and volume compensation, and places the cavity of resorption of sliding oil cylinder with air bag with all-hydraulic oil.Avoiding slowing down withstands on the process of compressed nitrogen when doing work, and making the top acting of slowing down full, improves braking effect.Increase locator card at deceleration top guide housings and rail contact site in addition, the connection mode of simulation rail joint clamping plate matches on two inclined-planes up and down with the rail outside, makes rail stressed more reasonable, and eliminate the shearing force that hold-down bolt bears, avoid hold-down bolt to fracture.
The technical solution adopted in the utility model is: provide a kind of and replace compressed nitrogen to reset and increase the deceleration top of locator card on guide housings with air bag.This top of slowing down is made up of guide housings assembly and sliding oil cylinder assembly two large divisions.
The guide housings assembly comprises guide housings, dust ring, hold-down bolt, nut, bullet pad, adjusting pad, ends and write off, only write off seal ring, spring cotter and label.
Guide housings is fixed on the middle part of rail with hold-down bolt, nut and bullet pad.Guide housings top is provided with dust ring, and the bottom is provided with only writes off the hole, and being partly with of contacting with rail reduces the stressed locator card of hold-down bolt.The top of locator card and rail head inclined-plane coincide, and bottom and flange of rail inclined-plane coincide.The sliding oil cylinder assembly is inserted in the middle macropore of guide housings, ends writing off being inserted in the aperture of lower housing portion, fixes with spring cotter, and a part of ending abatement stretches into ends red seat top, and piston rod is to upper punch when preventing backhaul.
The sliding oil cylinder assembly comprises cylinder body, valve seat, declares fast valve block, declares fast spring, piston, seal ring, guide ring, piston rod, backhaul valve block, steel ball and steel ball seat (or cone valve), seal cover cap, pressure valve outer spring, pressure valve inner spring, air bag, end red seat, circlip, rubber seal and straight pin.The deceleration top that has unidirectional slow backhaul characteristic also comprises backhaul valve body (replacing the backhaul valve block), O shape rubber ring and locating dowel pin.
In the sliding oil cylinder assembly, piston and seal ring are divided into two chambeies up and down with the space in the sliding oil cylinder, and epicoele is full of hydraulic oil fully.The air bag that inside has compressed nitrogen is contained between the piston rod and cylinder body of cavity of resorption, and air bag also is full of hydraulic oil outward.The cylinder body upper end closed also is mushroom-shaped, and there are negative thread and groove in the lower end.There is through hole the centre of piston, and the upper end has a circular groove, and the lower end has a plurality of oil-through holes, communicates with circular groove.Install in the circular groove and declare fast spring.The inner and outer rings end face double as of circular groove is declared the sealing surface of fast valve.Outer circumference surface has 2 circular grooves, and seal ring and guide ring are installed.The top of piston rod is hollow, and screw thread is arranged in the upper end, and 2 steps are arranged outward.The lower end is real core.The first half center of valve seat is a polygonal hole, and this hole promptly is the passage of pressure oil, also is the spanner mouth that Assembly And Disassembly is used.The lower part center is cylindrical oil-through hole, communicates with polygonal hole.There is outside thread the lower end of valve seat, is connected with the negative thread of piston rod upper end.Top also has two steps, and the step of top is spacing to declaring fast valve block, and following step and 1 step on the piston rod clamp piston jointly.The backhaul valve block is enclosed within on another step on piston rod top.Steel ball and steel ball seat (or cone valve) and the inside and outside spring of pressure valve all are contained in the cavity of piston rod, and the top and the valve seat of steel ball and steel ball seat (or cone valve) join, and the inside and outside spring of bottom and pressure valve joins.Steel ball and steel ball seat (or cone valve), valve seat and the inside and outside spring of pressure valve constitute pressure valve jointly.Seal cover cap is installed between cylinder body and the piston rod, and seals with rubber seal respectively.Circlip is installed in the groove of cylinder body, is prevented that seal cover cap is loosening.End red seat and can make step or groove shape as required.Be respectively applied for the common top of piston rod rotary type or the unidirectional top of rotary type not.
The beneficial effects of the utility model are: adopted air bag homing position type structure 1., replace compressed nitrogen that the power that resets is provided with air bag, and air bag is positioned at the cavity of resorption of oil cylinder, process of compressed nitrogen when so this deceleration top can avoid work to begin fully, working stroke is fully used, and then braking work is improved, can obviously improve braking effect.Avoided simultaneously owing to compressed nitrogen is revealed the equipment failure cause, prolonged disposable leak free service life, reduced maintenance load.The all non-inflatable equipment of suppressing when this deceleration top produces assembling and uses maintenance.Processing and manufacturing is simple, uses easy to maintenance.Suppose that air bag damages, the compressed nitrogen of leakage will move on to the oil cylinder epicoele automatically, and this deceleration top still can be continued acting and be resetted.Effect is identical with common deceleration top.2. guide housings and rail contact portion have locator card, the inclined-plane direct contact of locator card and rail head and the flange of rail improves the strained condition of rail, and wheel is directly passed to rail to the impulsive force on the top of slowing down, reduce the stressed of hold-down bolt, prevent that hold-down bolt from fractureing.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the overall pattern that air bag resets and slows down and push up.
Fig. 2 is the common guide housings assembly cutaway view of each embodiment.
Fig. 3 is the air bag sliding oil cylinder assembly cutaway view on top (embodiment 1) of slowing down that resets.
Fig. 4 is the air bag sliding oil cylinder assembly cutaway view on top (embodiment 2) of slowing down that resets.
Fig. 5 is the air bag sliding oil cylinder assembly cutaway view on top (embodiment 3) of slowing down that resets.
Fig. 6 is the air bag front view of backhaul valve body on top (embodiment 3) of slowing down that resets.
Fig. 7 is the air bag birds-eye view of backhaul valve body on top (embodiment 3) of slowing down that resets.
Among the figure: 1. guide housings, 2. dust ring, 3. hold-down bolt, 4. nut, 5. bullet pad, 6. adjusting pad 7. ends and writing off, and 8. only writes off seal ring, 9. spring cotter, 10. label, 11. cylinder bodies, 12. valve seats, 13. declare fast valve block, 14. declare fast spring, 15. pistons, 16. seal rings, 17. guide ring, 18. backhaul valve blocks, 19. steel balls, 20. steel ball seat, 21. seal cover cap, 22. pressure valve outer springs, 23. pressure valve inner springs, 24. piston rod, 25. elastic rings, 26. end red seat, 27. straight pin, 28. circlips, 29. piston rod packing circles, 30. cylinder seal, 31. air bags that reset, 32. cone valves, 33. the backhaul valve body, 34.O shape rubber ring, 35. locating dowel pins.
In overall pattern shown in Figure 1, reset the slow down sliding oil cylinder assembly on top of air bag is inserted in the guide housings assembly, and the guide housings assembly is installed on the rail.
In the cutaway view of guide housings assembly shown in Figure 2, the right-hand member of guide housings (1) has two internal thread holes, is fixed on the rail by hold-down bolt (3), nut (4) and spring washer (5).There is circular groove the upper end of guide housings (1), and dust ring (2) is installed in the groove, and guide housings (1) is provided with locator card A with the position that rail head lower jaw inclined-plane contacts, and the position that contacts with flange of rail upper inclined surface is provided with locator card B.A, B locator card are directly passed to rail with traffic blows power.The intracavity bottom of guide housings (1) has a groove, and adjusting pad (6) is housed in the groove.There is a through hole in the left side of groove, installs in the hole to end and writes off (7).End writing off to be equipped with between (7) and the guide housings and only write off seal ring (8) and spring cotter (9).The label (10) of expression deceleration top performance is posted in the outside of guide housings (1).
In the cutaway view of sliding oil cylinder assembly shown in Figure 3, the upper end of cylinder body (11) is a mushroom-shaped, and the mushroom head contacts with wheel during work.The outside thread of seal cover cap (21) is installed in the negative thread of cylinder body (11) lower end, and circlip (28) is installed in the groove of cylinder body (11) lower end.The middle part of piston rod (24) is inserted in the hole at seal cover cap (21) center, and seals by piston rod packing circle (29).Seal cover cap (21) seals by cylinder seal (30) and cylinder body.The top of piston rod (24) is hollow core structures, and there is negative thread the upper end, cooperates with the outside thread of valve seat (12), and by the step of valve seat (12) bottom and a step on piston rod (24) top piston (15) is clamped.Another step of piston rod (24) is held backhaul valve block (18).The bottom of piston rod (24) is real cored structure, and the lower end is connected with red seat (26) only by straight pin (27), and piston rod is upwards gone out thereupon when preventing the sliding oil cylinder backhaul.Only be with the elastic ring (25) that prevents the straight pin string and go out on the circumference of red seat.Through hole in the middle of the piston (15) is installed valve seat (12), installs in the circular groove of upper end and declares fast spring (14).Declaring fast valve block (13) is installed between the step of declaring fast spring (14) and valve seat (12) top.Backhaul valve block (18) is installed in below the piston (15).Seal ring (16) and guide ring (17) are installed in the exterior circular groove of piston (15).Pressure valve outer spring (22) and inner spring (23) are installed in the middle endoporus of piston rod (24).Steel ball (19) and steel ball seat (20) are installed between pressure valve outer spring (22) and pressure valve inner spring (23) and the valve seat (12).The polygon endoporus of valve seat (12) first half, the spanner mouth that the passage of double as pressure oil and Assembly And Disassembly are used.The circular oil-through hole of lower part and steel ball (19), steel ball seat (20) and pressure valve outer spring (22) and inner spring (23) are formed pressure valve jointly.The air bag (31) that resets is installed in the cavity of resorption of sliding oil cylinder.All be full of hydraulic oil in the upper and lower cavity.
Shown in Figure 4 is the sliding oil cylinder assembly cutaway view of embodiment 2.
In embodiment shown in Figure 42, the deceleration roof construction is substantially the same manner as Example 1.Just steel ball (19) and steel ball seat (20) are replaced by cone valve (32), to improve the dynamic property of pressure valve.
Working process of the present utility model is such:
When wheel pressed the mushroom of deceleration top cylinder body with certain speed, cylinder body began to move downward.If at this moment the speed of a motor vehicle is lower than the critical speed of setting, declares fast valve block and do not close.The hydraulic oil of epicoele flows to cavity of resorption smoothly by the circular groove on piston top and the oil-through hole of piston bottom in the cylinder body.Slow down and push up the work of resistance of only doing seldom.If the speed of a motor vehicle is higher than the critical speed of setting, declares fast valve block and descend rapidly, the circular groove sealing on piston top, the hydraulic oil channel between the blocking-up upper and lower cavity.At this moment the pressure of oil cylinder epicoele raises rapidly, and hydraulic oil is opened pressure valve and flowed to cavity of resorption by the oil-through hole at valve seat center.Because acting heating during hydraulic oil flow excess pressure valve slit, the kinetic energy that pushes up vehicle that slows down changes heat energy into, and vehicle is slowed down.Because the existence of piston rod, the area of section of two chamber hydraulic oil does not wait up and down, makes the air bag compression by the hydraulic oil that it is unnecessary that epicoele flows to cavity of resorption, has both compensated the difference in volume in two chambeies up and down, has stored energy for again resetting of cylinder body.
After wheel pushed up through slowing down, cylinder body is upward movement under the effect of gasbag pressure, returned to the preceding position of acting.The effect of backhaul valve block is the opening speed that reduces cylinder body, impacts to reduce.
Shown in Figure 5 is the sliding oil cylinder assembly cutaway view of embodiment 3.
In embodiment shown in Figure 53, the basic structure on the top of slowing down is identical with embodiment 1.Just the backhaul valve block (18) among Fig. 3 is replaced by unidirectional slow backhaul valve body (34), and increases O shape rubber ring (33) and locating dowel pin (35), to increase the unidirectional slow backhaul function on the top of slowing down.Cancel elastic ring (25) simultaneously, and the step that will end red seat (26) changes groove into, utilize and end the rotation of writing off (7) limited piston bar (24).
The unidirectional slow backhaul function of pushing up of slowing down is achieved in that
In backhaul valve body front view shown in Figure 6, the inboard of O shape rubber ring contacts with the U-lag of backhaul valve body, and the outside contacts with cylinder body.When cylinder body rotates under the wheel effect, rebound valve is known from experience rotation thereupon under the effect of O shape rubber ring friction force, and piston rod be because the restriction that is subjected to red seat (26) only and ends abatement (7) can not be rotated, and this relatively rotates the relative position that both can change oil-through hole and piston bottom oil-through hole on the backhaul valve body.In Fig. 6, the C hole of approximate ellipsoidal is by the anglec of rotation of locating dowel pin (35) restriction backhaul valve body.When backhaul valve body left-hand revolution, bigger D hole communicates with the oil-through hole of piston bottom, and the less E hole and the oil-through hole of piston bottom are obstructed, and cylinder body resets with normal speed.When backhaul valve body clickwise, the bigger D hole and the oil-through hole of piston bottom are obstructed, and less E hole communicates with the oil-through hole of piston bottom, and cylinder body resets with slower speed.When the top of slowing down resetted with slower speed, when vehicle was involved with higher speed, not doing work or few acting in the top of slowing down, both can avoid or reduce the waste of railroad traction, can prolong the service life on the top of slowing down again.
Claims (3)
1. an air bag resets to slow down and pushes up, form by guide housings and sliding oil cylinder two large divisions, it is characterized in that: adopt sphere or conial pressure valve, the piston rod of split-type structural and piston, utilize the outside thread of valve seat and the negative thread clamping piston of piston rod, piston top has circular groove, installs in the groove and declares fast spring, and the air bag that resets is installed in the piston below.Utilization has the cubage compensation of the air bag of compressed nitrogen as the reset power and oil cylinder two chambeies on the top of slowing down.
2. air bag according to claim 1 resets to slow down and pushes up, and it is characterized in that: guide housings and rail contact portion have the locator card of direct transmission wheel impulsive force.
3. the air bag according to claim 1 top of slowing down that resets is characterized in that: backhaul valve block or backhaul valve body are installed at piston with resetting between the air bag, to change the opening speed of slowing down and pushing up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720015433XU CN201089464Y (en) | 2007-10-22 | 2007-10-22 | Air-pocket reset retarder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720015433XU CN201089464Y (en) | 2007-10-22 | 2007-10-22 | Air-pocket reset retarder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201089464Y true CN201089464Y (en) | 2008-07-23 |
Family
ID=39861223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720015433XU Expired - Fee Related CN201089464Y (en) | 2007-10-22 | 2007-10-22 | Air-pocket reset retarder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201089464Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101863277B (en) * | 2009-04-14 | 2012-03-28 | 杨恩久 | Short body retarder |
| CN103273945A (en) * | 2013-05-24 | 2013-09-04 | 杨恩久 | Electric-control wheel-stopping train-blocking device |
| CN107319011A (en) * | 2017-07-20 | 2017-11-07 | 庄晨 | A kind of brain tonic and intelligence development formula edible oil and its preparation technology |
| CN113211351A (en) * | 2021-05-14 | 2021-08-06 | 中国工程物理研究院激光聚变研究中心 | Self-adaptive flexible low-stress clamping device and clamping method for deep rise aspheric element |
-
2007
- 2007-10-22 CN CNU200720015433XU patent/CN201089464Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101863277B (en) * | 2009-04-14 | 2012-03-28 | 杨恩久 | Short body retarder |
| CN103273945A (en) * | 2013-05-24 | 2013-09-04 | 杨恩久 | Electric-control wheel-stopping train-blocking device |
| CN103273945B (en) * | 2013-05-24 | 2015-06-10 | 杨恩久 | Electric-control wheel-stopping train-blocking device |
| CN107319011A (en) * | 2017-07-20 | 2017-11-07 | 庄晨 | A kind of brain tonic and intelligence development formula edible oil and its preparation technology |
| CN113211351A (en) * | 2021-05-14 | 2021-08-06 | 中国工程物理研究院激光聚变研究中心 | Self-adaptive flexible low-stress clamping device and clamping method for deep rise aspheric element |
| CN113211351B (en) * | 2021-05-14 | 2022-03-08 | 中国工程物理研究院激光聚变研究中心 | Self-adaptive flexible low-stress clamping device and clamping method for deep rise aspheric element |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Zhao Xueqing Document name: Notification to Pay the Fees |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080723 Termination date: 20111022 |