CN103192847A - High-load retarder with welding type piston - Google Patents
High-load retarder with welding type piston Download PDFInfo
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- CN103192847A CN103192847A CN2013101082964A CN201310108296A CN103192847A CN 103192847 A CN103192847 A CN 103192847A CN 2013101082964 A CN2013101082964 A CN 2013101082964A CN 201310108296 A CN201310108296 A CN 201310108296A CN 103192847 A CN103192847 A CN 103192847A
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Abstract
A high-load retarder with a welding type piston relates to a retarder and aims at solving the problem that the existing high-load retarder is large in speed judgment overflow area and cannot conduct speed judgment gear selection. A second overflow channel is arranged on an upper piston, a plurality of first overflow channels parallel to the second overflow channel are arranged on the lateral wall of the upper piston along a circle, a groove is arranged on the upper end face of a lower piston, a Y-shaped channel is arranged at the center position of the lower piston, and the lower end face of the upper piston and the upper end face of the lower piston are mutually welded. A vertical overflow hole is arranged on the connection face of the upper piston and the lower piston, a sealing cover is connected with the lower end of a sliding oil cylinder in sealing mode, a valve plate overflow hole is arranged on a speed valve plate, a speed valve spring is arranged in the second overflow channel, a transverse oil through hole is arranged on a piston rod at the lower end of each piston, the overflow area of the upper end of the Y-shaped channel is smaller than the overflow area of the vertical overflow hole, and the overflow area of the vertical overflow hole is smaller than the overflow area of the second overflow channel. The high-load retarder is used for railway deceleration.
Description
Technical field
The present invention relates to a kind of deceleration top, be specifically related to a kind of welded type piston high load capacity deceleration top.
Background technology
Along with the demand for development of domestic and international railway high speed heavy duty, high load capacity series deceleration top speed control device has obtained applying widely.Piston is one of high load capacity deceleration top vitals, and it has directly determined the deceleration and stopping performance that high load capacity slows down and pushes up.
China Patent No. is ZL200420063146.2, Granted publication day is that the patent of invention on September 28th, 2005 discloses a kind of " high load capacity slows down and pushes up ", though this deceleration top possesses body intensity height, the whole guiding, critical speed precision height, the cloth amount of serving as a fill-in is lacked, busy line is short out, the load performance height, the characteristics that safety performance is good, piston and the piston rod on this deceleration top are integral structure, though fabrication properties can be guaranteed, but, the open area of this deceleration top piston structure is restricted, can't declare fast stepping, the speed governing requirement of purpose braking in the time of can't adapting to the lorry marshalling.
Summary of the invention
The objective of the invention is for solve existing high load capacity slow down the top to declare fast open area big, can't declare the problem of fast stepping, a kind of welded type piston high load capacity top of slowing down is provided.
The present invention includes sliding oil cylinder assembly set and housing, described sliding oil cylinder assembly set comprises sliding oil cylinder, the speed valve seat, the speed valve spring, the speed valve plate, piston, the backhaul valve plate, back-up ring, support ring, the pressure valve rod, seal cover cap, the pressure valve inner spring, the pressure valve outer spring, spring perch, the 5th O RunddichtringO, voltage regulation screw, packing ring, lock nut, piston rod, end red seat, connecting pin, snap ring and pin, lock nut is housed in the piston rod from the bottom to top successively, packing ring, voltage regulation screw, the 5th O RunddichtringO, spring perch, the pressure valve outer spring, pressure valve inner spring and pressure valve rod, piston is made up of upper piston and lower piston, upper piston is provided with second flow channels, the same circumference in sidewall upper edge of upper piston is provided with several first flow channels parallel with second flow channels, the upper surface of lower piston is provided with groove, the center of lower piston is provided with Y type passage, the lower surface of upper piston and the upper surface of lower piston are welded to each other, the joint face of upper piston and lower piston is provided with vertical flowing hole, the center of upper piston is screw rod, the outside face of screw rod is provided with the piston core outside thread, the outside face of lower piston lower end piston rod connector is provided with piston rod and connects outside thread, the upper end of pressure valve rod is pyramidal structure, pyramidal structure is arranged on the lower end of Y type passage, the piston rod of piston lower end connects outside thread and is threaded with the piston rod upper end, the lower end of piston rod pass seal cover cap by connecting pin with end red seat and be connected, the lower end of seal cover cap and sliding oil cylinder is tightly connected, support ring is arranged between piston and the sliding oil cylinder, the inwall moving contact of piston and sliding oil cylinder, the centre hole of speed valve seat is provided with negative thread, the negative thread of speed valve seat is connected with the outside thread of screw rod, the speed valve sleeve-board is located under the upper edge of speed valve seat, the speed valve plate is provided with the valve plate flowing hole, the speed valve spring is arranged in second flow channels, the backhaul valve plate is arranged on the below of first flow channels, back-up ring is arranged on the below of backhaul valve plate and is fixed on the piston, have horizontal oil-through hole on the piston rod of piston lower end, snap ring is set on the connecting pin, the lower end sidewall of sliding oil cylinder is provided with oblique pin-and-hole, seal cover cap is provided with the oblique through hole that communicates with pin-and-hole, pin is installed in oblique pin-and-hole and the oblique through hole, the cavity of the sliding oil cylinder of piston top is epicoele in the oil cylinder, described sliding oil cylinder assembly set is installed in the housing, the open area of described Y type passage upper end is less than the open area of vertical flowing hole, and vertically the open area of flowing hole is less than the open area of second flow channels.
The present invention has the following advantages:
One, the inner chamber of upper piston has big open area (i.e. second flow channels), be down to minimum to the influence of flow characteristic the oil liquid temperature variation, the pressure oil of the interior epicoele of oil cylinder is easy to flow to cavity of resorption in the oil cylinder when making deceleration withstand on subcritical speed, has reduced the work of resistance.Upper and lower cavity pressure reduction can more promptly be set up when being higher than critical speed, has improved the precision of critical speed, has reduced dispersion.The area of internal piston flowing hole from top to bottom successively decreases step by step, makes piston have less overcurrent dumping force, possesses the valve port open area of less speed simultaneously, has reduced the needed antagonistic force of speed valve spring, thereby has realized that piston declares fast stepping.
Two, piston adopts technique for welding, has reduced difficulty of processing and productive costs.Local Damping type piston crown structure precision is higher, and is sensitiveer to the variation reflection of oil liquid pressure.Guarantee that tapered pressure valve can open rapidly, and obtain stable response pressure.
Three, has support ring on the piston one, make deceleration top epicoele fluid be unlikely to flow to cavity of resorption by the gap between piston and the sliding oil cylinder, the top acting that guarantees to slow down is fuller, avoid because leakage produces the phenomenon that the acting ability later stage sharply descends, i.e. the braking counter-force was constant after the 50mm that is depressed was pushed up in deceleration.
Four, the present invention can realize that six grades are declared speed, and wherein six grades are respectively: 1.25m/s, 2.0m/s, 2.5m/s, 3.0m/s, 3.5m/s, 4.0m/s, can satisfy the demand of different marshalling stations speed-regulating type.
Five, good sealing effect between piston of the present invention and the sliding oil cylinder is difficult for leaking.
Description of drawings
Fig. 1 is integral structure scheme drawing of the present invention (mark E is rail among the figure), Fig. 2 is the integral structure scheme drawing of sliding oil cylinder assembly set B, Fig. 3 is the structural representation of piston 5, Fig. 4 is the D-D cutaway view of Fig. 3, Fig. 5 is structure master's cutaway view of upper piston 5-1, and Fig. 6 is structure master's cutaway view of lower piston 5-2.
The specific embodiment
The specific embodiment one: present embodiment is described in conjunction with Fig. 1～Fig. 6, present embodiment comprises sliding oil cylinder assembly set B and housing C, described sliding oil cylinder assembly set B comprises sliding oil cylinder 1, speed valve seat 2, speed valve spring 3, speed valve plate 4, piston 5, backhaul valve plate 6, back-up ring 7, support ring 8, pressure valve rod 9, seal cover cap 10, pressure valve inner spring 14, pressure valve outer spring 15, spring perch 16, the 5th O RunddichtringO 17, voltage regulation screw 18, packing ring 19, lock nut 20, piston rod 21, end red seat 22, connecting pin 23, snap ring 24 and pin 25, lock nut 20 is housed in the piston rod 21 from the bottom to top successively, packing ring 19, voltage regulation screw 18, the 5th O RunddichtringO 17, spring perch 16, pressure valve outer spring 15, pressure valve inner spring 14 and pressure valve rod 9, piston 5 is made up of upper piston 5-1 and lower piston 5-2, upper piston 5-1 is provided with second flow channels 13, the same circumference in sidewall upper edge of upper piston 5-1 is provided with several first flow channels 28 parallel with second flow channels 13, the upper surface of lower piston 5-2 is provided with groove 33, the center of lower piston 5-2 is provided with Y type passage 31, the upper surface of the lower surface of upper piston 5-1 and lower piston 5-2 is welded to each other, the joint face of upper piston 5-1 and lower piston 5-2 is provided with vertical flowing hole 34, the center of upper piston 5-1 is screw rod 5-1-1, the outside face of screw rod 5-1-1 is provided with piston core outside thread 12, the outside face of lower piston 5-2 lower end piston rod connector is provided with piston rod and connects outside thread 35, the upper end of pressure valve rod 9 is pyramidal structure 9-1, pyramidal structure 9-1 is arranged on the lower end of Y type passage 31, the piston rod of piston 5 lower ends connects outside thread 35 and is threaded with piston rod 21 upper ends, the lower end of piston rod 21 is passed seal cover cap 10 and is connected with red seat 22 only by connecting pin 23, seal cover cap 10 is tightly connected with the lower end of sliding oil cylinder 1, support ring 8 is arranged between piston 5 and the sliding oil cylinder 1, the inwall moving contact of piston 5 and sliding oil cylinder 1, the centre hole of speed valve seat 2 is provided with negative thread 2-1, the negative thread 2-1 of speed valve seat 2 is connected with the outside thread 12 of screw rod 5-1-1, speed valve plate 4 is set under the upper edge of speed valve seat 2, speed valve plate 4 is provided with valve plate flowing hole 30, speed valve spring 3 is arranged in second flow channels 13, backhaul valve plate 6 is arranged on the below of first flow channels 28, back-up ring 7 is arranged on the below of backhaul valve plate 6 and is fixed on the piston 5, have horizontal oil-through hole 32 on the piston rod 21 of piston 5 lower ends, snap ring 24 is set on the connecting pin 23, the lower end sidewall of sliding oil cylinder 1 is provided with oblique pin-and-hole 1-1, seal cover cap 10 is provided with the oblique through hole 10-1 that communicates with pin-and-hole 1-1, pin 25 is installed among oblique pin-and-hole 1-1 and the oblique through hole 10-1, the cavity of the sliding oil cylinder 1 of piston 5 tops is epicoele 26 in the oil cylinder, described sliding oil cylinder assembly set B is installed among the housing C, the open area of Y type passage 31 upper ends is less than the open area of vertical flowing hole 34, and vertically the open area of flowing hole 34 is less than the open area of second flow channels 13.For fear of the leakage of speed valve plate 4, the head end of piston 5 polish and speed valve plate 4 between obturage inside and outside forming.
The specific embodiment two: in conjunction with Fig. 2 present embodiment is described, the sliding oil cylinder assembly set B of present embodiment comprises that also an O RunddichtringO 11, the one O RunddichtringOs 11 are arranged between seal cover cap 10 and the sliding oil cylinder 1.The one O RunddichtringO 11 is in order to increase the sealing property between seal cover cap 10 and the sliding oil cylinder 1.Other composition and annexation are identical with the specific embodiment one.
The specific embodiment three: present embodiment is described in conjunction with Fig. 2, the sliding oil cylinder assembly set B of present embodiment comprises also that the 2nd O RunddichtringO 36, the two O RunddichtringOs 36 are arranged on the below of an O RunddichtringO 11 and between seal cover cap 10 and sliding oil cylinder 1.The 2nd O RunddichtringO 36 makes that seal cover cap 10 and sliding oil cylinder 1 are better sealed.Other composition and annexation are identical with the specific embodiment two.
The specific embodiment four: in conjunction with Fig. 2 present embodiment is described, the sliding oil cylinder assembly set B of present embodiment also comprises the 3rd O RunddichtringO 37, and described the 3rd O RunddichtringO 37 is arranged between seal cover cap 10 and the piston rod 21.The 3rd O RunddichtringO 37 is in order to increase the sealing property between seal cover cap 10 and the piston rod 21.Other composition and annexation are identical with the specific embodiment three.
The specific embodiment five: present embodiment is described in conjunction with Fig. 2, the sliding oil cylinder assembly set B of present embodiment also comprises the 4th O RunddichtringO 38, and described the 4th O RunddichtringO 38 is arranged on the below of the 3rd O RunddichtringO 37 and between seal cover cap 10 and piston rod 21.The 4th O RunddichtringO 38 makes that seal cover cap 10 and piston rod 21 are better sealed.Other composition and annexation are identical with the specific embodiment four.
The specific embodiment six: in conjunction with Fig. 1 present embodiment is described, present embodiment and the specific embodiment five are different is that it also increases adjusting pad A is arranged, and adjusting pad A is arranged among the housing C and between sliding oil cylinder assembly set B and housing C bottom surface.Other composition and annexation are identical with the specific embodiment five.
Principle of work of the present invention:
(1), during subcritical speed: when humping of cars speed is lower than high load capacity of the present invention and slows down the critical speed that the top sets up, sliding oil cylinder 1 is relatively low by the speed under the pressure wheel, the flow that the fluid of epicoele 26 produces in the oil cylinder is less, speed valve plate 4 suffered hydraulic couplings are not enough to overcome the precompressed compression of speed valve spring 3, speed valve plate 4 is held open state at this moment, fluid is by the annular overcurrent slit 27 of 4 of piston 5 and speed valve plates, again cavity of resorption 29 in first flowing hole, the 28 inflow oil cylinders on piston 5.Because it is very little that fluid flows through the damping of first flowing hole, 28 generations on the piston 5, deceleration effort is not played to vehicle in the top of therefore slowing down.
(2), during brake snub: when humping of cars speed is higher than high load capacity of the present invention and slows down the critical speed that the top sets up, sliding oil cylinder 1 is higher relatively by the speed under the pressure wheel, the pressure oil of epicoele 26 produces bigger oil liquid pressure in the oil cylinder, be enough to overcome the spring force that speed valve plate 4 is subjected to speed valve spring 3, force speed valve plate 4 to be closed rapidly, cut off the oil circuit in upper and lower chamber.This moment, sliding oil cylinder 1 continued to glide under the effect of wheel, epicoele 26 oil liquid pressures raise rapidly in the oil cylinder, when pressure is elevated to the response pressure of pressure valve rod 9 setting, pressure valve rod 9 is opened, this moment pressure oil liquid with certain pressure flow through valve plate flowing hole 30 on the speed valve plate 4, in the piston 5 second flow channels 13, vertically the horizontal oil-through hole 32 on flowing hole 34, Y type passage 31 and the piston rod 21 flows in the oil cylinders cavity of resorption 29 and produces bigger vertical pressure, make the top of slowing down do braking work to vehicle, thereby reached the purpose to the brake snub of vehicle.
(3), during backhaul: when wheel by after the vertex of sliding oil cylinder 1, sliding oil cylinder 1 is owing to the rise that makes progress of epicoele 26 compressed nitrogen expansions in the oil cylinder, the fluid of cavity of resorption 29 drives the lower surface that backhaul valve plate 6 relies on piston 5 in the oil cylinder, first flowing hole 28 on the piston 5 is partly hidden, the fluid of this moment can only return epicoele 26 in the oil cylinder with certain speed, thereby sliding oil cylinder 1 is gone up to vertex.
Claims (6)
1. a welded type piston high load capacity deceleration is pushed up, described deceleration top comprises sliding oil cylinder assembly set (B) and housing (C), described sliding oil cylinder assembly set (B) comprises sliding oil cylinder (1), speed valve seat (2), speed valve spring (3), speed valve plate (4), piston (5), backhaul valve plate (6), back-up ring (7), support ring (8), pressure valve rod (9), seal cover cap (10), pressure valve inner spring (14), pressure valve outer spring (15), spring perch (16), the 5th O RunddichtringO (17), voltage regulation screw (18), packing ring (19), lock nut (20), piston rod (21), end red seat (22), connecting pin (23), snap ring (24) and pin (25), lock nut (20) is housed in the piston rod (21) from the bottom to top successively, packing ring (19), voltage regulation screw (18), the 5th O RunddichtringO (17), spring perch (16), pressure valve outer spring (15), pressure valve inner spring (14) and pressure valve rod (9), piston (5) is made up of upper piston (5-1) and lower piston (5-2), upper piston (5-1) is provided with second flow channels (13), the same circumference in sidewall upper edge of upper piston (5-1) is provided with several first flow channels (28) parallel with second flow channels (13), the upper surface of lower piston (5-2) is provided with groove (33), the center of lower piston (5-2) is provided with Y type passage (31), the upper surface of the lower surface of upper piston (5-1) and lower piston (5-2) is welded to each other, upper piston (5-1) is provided with vertical flowing hole (34) with the joint face of lower piston (5-2), the center of upper piston (5-1) is screw rod (5-1-1), the outside face of screw rod (5-1-1) is provided with piston core outside thread (12), the outside face of lower piston (5-2) lower end piston rod connector is provided with piston rod and connects outside thread (35), the upper end of pressure valve rod (9) is pyramidal structure (9-1), pyramidal structure (9-1) is arranged on the lower end of Y type passage (31), the piston rod of piston (5) lower end connects outside thread (35) and is threaded with piston rod (21) upper end, the lower end of piston rod (21) is passed seal cover cap (10) and is connected with red seat (22) only by connecting pin (23), seal cover cap (10) is tightly connected with the lower end of sliding oil cylinder (1), support ring (8) is arranged between piston (5) and the sliding oil cylinder (1), the inwall moving contact of piston (5) and sliding oil cylinder (1), the centre hole of speed valve seat (2) is provided with negative thread (2-1), the negative thread (2-1) of speed valve seat (2) is connected with the outside thread (12) of screw rod (5-1-1), speed valve plate (4) is set under the upper edge of speed valve seat (2), speed valve plate (4) is provided with valve plate flowing hole (30), speed valve spring (3) is arranged in second flow channels (13), backhaul valve plate (6) is arranged on the below of first flow channels (28), back-up ring (7) is arranged on the below of backhaul valve plate (6) and is fixed on the piston (5), have horizontal oil-through hole (32) on the piston rod (21) of piston (5) lower end, snap ring (24) is set on the connecting pin (23), the lower end sidewall of sliding oil cylinder (1) is provided with oblique pin-and-hole (1-1), seal cover cap (10) is provided with the oblique through hole (10-1) that communicates with pin-and-hole (1-1), (25 are installed in oblique pin-and-hole (1-1) and the oblique through hole (10-1) pin, the cavity of the sliding oil cylinder (1) of piston (5) top is epicoele (26) in the oil cylinder, described sliding oil cylinder assembly set (B) is installed in the housing (C), it is characterized in that: the open area of described Y type passage (31) upper end is less than the open area of vertical flowing hole (34), and vertically the open area of flowing hole (34) is less than the open area of second flow channels (13).
2. slow down according to the described welded type piston of claim 1 high load capacity and push up, it is characterized in that: described sliding oil cylinder assembly set (B) also comprises an O RunddichtringO (11), and an O RunddichtringO (11) is arranged between seal cover cap (10) and the sliding oil cylinder (1).
3. slow down according to the described welded type piston of claim 2 high load capacity and push up, it is characterized in that: described sliding oil cylinder assembly set (B) also comprises the 2nd O RunddichtringO (36), the 2nd O RunddichtringO (36) be arranged on the below of an O RunddichtringO (11) and be positioned at seal cover cap (10) and sliding oil cylinder (1) between.
4. slow down according to the described welded type piston of claim 3 high load capacity and push up, it is characterized in that: described sliding oil cylinder assembly set (B) also comprises the 3rd O RunddichtringO (37), and described the 3rd O RunddichtringO (37) is arranged between seal cover cap (10) and the piston rod (21).
5. slow down according to the described welded type piston of claim 4 high load capacity and push up, it is characterized in that: described sliding oil cylinder assembly set (B) also comprises the 4th O RunddichtringO (38), described the 4th O RunddichtringO (38) be arranged on the below of the 3rd O RunddichtringO (37) and be positioned at seal cover cap (10) and piston rod (21) between.
6. according to the described welded type piston of the claim 5 high load capacity top of slowing down, it is characterized in that: described deceleration top also comprise adjusting pad (A), described adjusting pad (A) be arranged in the housing (C) and be positioned at sliding oil cylinder assembly set (B) and housing (C) bottom surface between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101082964A CN103192847A (en) | 2013-03-29 | 2013-03-29 | High-load retarder with welding type piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101082964A CN103192847A (en) | 2013-03-29 | 2013-03-29 | High-load retarder with welding type piston |
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| Publication Number | Publication Date |
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| CN103192847A true CN103192847A (en) | 2013-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101082964A Pending CN103192847A (en) | 2013-03-29 | 2013-03-29 | High-load retarder with welding type piston |
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| CN (1) | CN103192847A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103587545A (en) * | 2013-11-29 | 2014-02-19 | 哈尔滨市特多佳调速技术开发中心 | Integrally reinforced type high-load retarder |
| CN106696988A (en) * | 2017-01-24 | 2017-05-24 | 哈尔滨市特多佳调速技术开发中心 | Safety unloading retarder |
| CN110417147A (en) * | 2019-05-20 | 2019-11-05 | 天津市天发重型水电设备制造有限公司 | A kind of improved rotor field spider hot jacket assembling structure |
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2013
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103587545A (en) * | 2013-11-29 | 2014-02-19 | 哈尔滨市特多佳调速技术开发中心 | Integrally reinforced type high-load retarder |
| CN103587545B (en) * | 2013-11-29 | 2016-07-06 | 哈尔滨市特多佳调速技术开发中心 | A kind of integrated reinforced high-load speed reducing support |
| CN106696988A (en) * | 2017-01-24 | 2017-05-24 | 哈尔滨市特多佳调速技术开发中心 | Safety unloading retarder |
| CN110417147A (en) * | 2019-05-20 | 2019-11-05 | 天津市天发重型水电设备制造有限公司 | A kind of improved rotor field spider hot jacket assembling structure |
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Application publication date: 20130710 |