CN204264172U - A kind of guideway vehicle foundation brake parks the relieving apparatus of cylinder - Google Patents
A kind of guideway vehicle foundation brake parks the relieving apparatus of cylinder Download PDFInfo
- Publication number
- CN204264172U CN204264172U CN201420721173.8U CN201420721173U CN204264172U CN 204264172 U CN204264172 U CN 204264172U CN 201420721173 U CN201420721173 U CN 201420721173U CN 204264172 U CN204264172 U CN 204264172U
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- latch
- cylinder
- center shaft
- casing
- parks
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Abstract
The utility model relates to the relieving apparatus that a kind of guideway vehicle foundation brake parks cylinder, and be fixed on the end cap sidewall parking cylinder, composition comprises: casing, is positioned at casing and the center shaft that can slide along own axes direction; Rear end and center shaft Fixed latches, suit actuator on center shaft, latch front end has the head being suitable for inserting pawl seat between cog, and the hook portion coordinated with stop pin; Actuator both sides are connected to the stay cord parallel with center shaft; End cap is fixed with for preventing the first stop block of latch head bias and the second stop block for preventing latch from overturning.The handle of two stay cords is divided into car body both sides, only hand relieving stay cord need be pulled can to realize the alleviation of parking brake in any side of car body.
Description
Technical field
The utility model relates to the foundation brake of rail traffic vehicles, particularly the center cross rotation-prevention equalizing gear of drg.
Background technology
Foundation brake of rail transit vehicle parks cylinder mainly in order to ensure that vehicle has parking brake requirement under certain slope condition.Parking brake is generally that the application force by parking energy-storaging spring in cylinder realizes.And the compression of parking energy-storaging spring in cylinder realizes mainly through pressurized air with extension: after pressurized air is discharged, namely realize applying parking brake; After pressurized air is charged, namely realize alleviating parking brake.If do not have pressurized air to can be used to alleviate the foundation brake (as when the vehicle is parked) having implemented parking brake, also parking brake can be alleviated by M/C alleviation stay cord.
Existing hand relieving device drives fluting back-up ring, hollow tube and actuator to carry out Direct driver ratchet by stay cord assembly and realizes alleviating.Existing hand relieving device is installed ON TRAINS, can not realize realizing hand relieving in train both sides.Therefore the hand relieving that this device realizes train both sides must be improved.
Found through inspection, Chinese invention patent application CN 102795240 A discloses one " hand relieving device for guideway vehicle foundation brake ", be characterized in alleviation casing, be provided with the mechanism of two covers for driving hand to alleviate guide pin bushing, this Liang Tao mechanism is independently controlled by two stay cord assemblies, achieves bilateral hand relieving.
Realize manual unlocking by the form of stirring ratchet, its structure is compact not, still has the space of improvement.
Summary of the invention
Technical problem to be solved in the utility model is, overcomes the above-mentioned shortcoming of prior art, provides a kind of guideway vehicle foundation brake to park the relieving apparatus of cylinder.
In order to solve above technical matters, the guideway vehicle foundation brake that the utility model provides parks the relieving apparatus of cylinder, is fixed on the end cap sidewall parking cylinder, it is characterized in that composition comprises:
Casing,
Center shaft, is positioned at casing and can slides along own axes direction;
Latch, its rear end and center shaft are fixed, and front end has and is suitable for inserting pawl seat between cog to block the head of pawl seat, and the hook portion coordinated with stop pin;
Actuator, is set with on center shaft, for being pulled back by center shaft; Its both sides are connected to the stay cord parallel with center shaft;
First stop block, is fixed on end cap, is positioned in the pawl seat rotation direction of latch head, for preventing latch head bias;
Second stop block, is fixed on end cap, is positioned at the top of latch hook portion, overturns for preventing latch;
Latch retracing spring, on center shaft, two ends prop up center shaft and casing to cover respectively, make latch have the trend inserting pawl seat between cog;
Stay cord retracing spring, is enclosed within stay cord, and two ends prop up casing and actuator respectively, makes driving implement have proal trend.
In order to solve the problems of the technologies described above further, the relieving apparatus that this guideway vehicle foundation brake parks cylinder also has following improvement:
1, the middle part of described actuator has through hole, and is enclosed within the front end of center shaft by linear bearing.
2, described central axis has the shoulder of outwardly convex, and latch retracing spring two ends prop up aft end face and the casing of this shoulder respectively, and the aft end face of described actuator props up the front end face of center shaft shoulder.
3, described latch hook portion has from top to bottom and holds the first step and second step that stop pin plunger enters; When stop pin plunger enters first step, the head of latch inserts pawl seat between cog, and pawl seat is locked; When stop pin plunger enters second step, the head of latch departs from pawl seat between cog, and pawl seat is unlocked.
4, relieving apparatus also has two the stay cord protective covers being fixed on casing by baffle plate, and two stay cords pass from the stay cord protective cover of correspondence respectively, are embedded with seal ring between described stay cord protective cover and casing.
5, described casing has and holds center shaft and the actuator cavity in interior slip, and holds the hole that stay cord protective cover inserts from rear portion.
6, described center shaft is threaded with latch and is integrated or integral casting forming is integrated.
7, described casing is secured by bolts in end cap sidewall.
The lower end cover of stop pin has stop pin retracing spring, trend stop pin being had move downward.
In this relieving apparatus, the unblock that can realize pawl seat by pulling the latch possessing reset function, and match with stop pin due to latch hook portion, the released state of pawl seat can be kept, thus complete manual unlocking.After parking cylinder inflation, park piston rising jack-up stop pin, stop pin departs from second step, and under the effect of retracing spring, latch head inserts pawl seat between cog, realizes the locking to pawl seat.
The utility model adopts the form of latch straight cutting to carry out pawl seat locking, and stroke is short, is active in one's movements; Carry out the spacing of latch by the first stop block, guarantee that latch moves axially and lower resistance; Prevent latch from overturning by the second stop block, guarantee that its hook portion is more stable with coordinating of stop pin, thus improve the reliability of device.
The handle of two stay cords is divided into car body both sides, only hand relieving stay cord need be pulled can to realize the alleviation of parking brake in any side of car body.
In addition, the utility model also protects one to park cylinder, it is characterized in that: include the relieving apparatus described in any one of claim 1-7.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is further described.
Fig. 1 is the outside drawing that the utility model parks cylinder.
Fig. 2 is the vertical view cutaway drawing that the utility model parks cylinder.
Fig. 3 is the side view cutaway drawing that the utility model parks cylinder.
Fig. 4 is actuator block diagram.
Fig. 5 is latch block diagram.
Fig. 6 parks cylinder end cap block diagram.
Number in the figure schematically as follows
1-parks cylinder, 2-end cap, 3-relieving apparatus, 4-baffle plate, 5-stay cord protective cover, 6.1-first stay cord, 6.2-second stay cord, 8-hex bolt, 9-seal ring, 10-stay cord retracing spring, 11-casing, 12-actuator, 12.1-first U-type groove, 12.2-second U-type groove, 13-center shaft, 14-latch, 14.1 – first steps, 14.2 – second steps, 15-stop pin, 16-pawl seat, 17-linear bearing, 18-latch retracing spring, 19-parks spring, 20-stop pin retracing spring, and 21-parks piston, 22-screw mandrel, 23-screw rod bushing.
Detailed description of the invention
For making the object of the utility model embodiment, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 6, the present embodiment parks cylinder 1 with relieving apparatus, its inside has parks piston 21, be contained in the spring 19(compressing of parking of parking on piston 21 to park piston 21 and move downward), pawl seat 16, the screw mandrel 22 that rear end is coordinated by keyway with pawl seat 16, is contained in the screw rod bushing 23 on screw mandrel 22, and screw rod bushing 23 coordinates with the stand flank of tooth be fixed on piston and forms flank of tooth power-transfer clutch.As shown in Figure 3, park in cylinder 1 and also there is stop pin 15, stop pin 15 is set with stop pin retracing spring 20, make stop pin 15 have the trend moved downward.The top of parking cylinder 1 has end cap 2, end cap 2 is fixed relieving apparatus 3.
As shown in Figure 1 and Figure 2, relieving apparatus 3 is fixed on end cap 2 side of parking cylinder 1.Relieving apparatus 3 has the casing 11 being fixed on end cap 2 side by hex bolt 8, casing 11 is provided with cavity, cavity is built-in with the center shaft 13 and actuator 12 that can slide along own axes direction, and actuator 12 is sleeved on center shaft 13, for being pulled back by center shaft 13.Center shaft 13 has the shoulder of outwardly convex, and latch retracing spring 18 two ends prop up aft end face and the casing 11 of this shoulder respectively, and the aft end face of actuator 12 props up the front end face of center shaft 13 shoulder.As shown in Figure 4, in the middle part of actuator 12, there is through hole, for being enclosed within (see figure 2) on center shaft 13 by linear bearing 17, the monosymmetric head being furnished with the first U-type groove 12.1 and the second U-type groove 12.2, first stay cord 6.1, second stay cord 6.2 inserts the first U-type groove 12.1 respectively and the second U-type groove 12.2 is also fixing.On first stay cord 6.1 and the second stay cord 6.2, cover has two ends to prop up the stay cord retracing spring 10 of casing 11 and actuator 12 respectively, actuator 12 is had travel forward the trend realizing resetting.
Relieving apparatus also has latch 14, and its rear end and center shaft 13 are fixed, and front end has and is suitable for inserting pawl seat 16 between cog to block the head of pawl seat 16, and the hook portion coordinated with stop pin 15.Latch block diagram is see Fig. 5, and latch 14 hook portion has from top to bottom holds the first step 14.1 and second step 14.2 that stop pin 15 plunger enters; When stop pin 15 plunger enters first step 14.1, the head of latch 14 inserts pawl seat 16 between cog, and pawl seat 16 is locked; When stop pin 15 plunger enters second step 14.2, the head of latch 14 departs from pawl seat 16 between cog, and pawl seat 16 is unlocked.
Pull any in two stay cords, actuator 12 can be pulled back, pull latch 14 to make its position that goes out of lock by center shaft 13, thus allow pawl seat 16 unlock, realize hand relieving.
In order to prevent latch 14 head bias, end cap 2 is fixed with the first stop block, this first stop block is positioned in pawl seat 16 rotation direction of latch 14 head.After latch 14 stretches out latch ratchet seat 16, the twisting force of pawl seat 16 is born in the side of latch 14 head, and opposite side is subject to the spacing of the first stop block, thus makes latch 14 keep center position.
In order to prevent latch 14 from overturning, end cap 2 is fixed with the second stop block, this second stop block is positioned at the top of latch 14 hook portion, props up latch 14 hook portion and makes it not rotate, and this ensures that theres coordinating of hook portion and stop pin 15.
As shown in Figure 2, the relieving apparatus in the present embodiment also has two stay cord protective covers, 5, two stay cords being fixed on casing 11 by baffle plate 4 and passes from the stay cord protective cover of correspondence respectively, is embedded with seal ring 9 between stay cord protective cover and casing 11.
The alleviation process prescription that the present embodiment parks cylinder is as follows:
When vehicle normally runs, park cylinder and be in inflated condition, park piston and will park spring-compressed under compressed-air actuated effect, and park piston stop pin is backed down, its second step departing from latch hook portion is made to enter first step, latch moves forward under the effect of latch retracing spring, makes the head of latch block pawl seat, by its with park cylinder body and set up transmitting torque.
After vehicle is out of service, parks cylinder and be in exhaust condition: park piston and parking the tension force moved downward of spring, now the rotation direction of pawl seat is locked by latch, screw rod bushing drives screw mandrel to move downward, and realizes parking brake.
Implement after hand relieving, by the first stay cord or the second stay cord effect on a drive, actuator pulls center shaft, latch is made to depart from pawl seat, cause pawl seat and the moment of torsion transmission of parking between cylinder body is interrupted, both relatively rotate in realization, then reach and park relieved state.Wherein, latch and park end cap slide opening in and slidingsurface between actuator and center shaft be provided with the linear bearing reducing to rub.Further, in order to avoid latch snapping in ratchet prematurely when alleviating, by stop pin retracing spring, stop pin being pressed into the second step of latch, by latch locking in release position, thus realizing the alleviation of parking brake.
In the manner described above, after parking cylinder enforcement parking brake, pull and alleviate the alleviation that stay cord can realize parking brake.
In addition to the implementation, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.
Claims (10)
1. guideway vehicle foundation brake parks a relieving apparatus for cylinder, is fixed on the end cap sidewall parking cylinder, it is characterized in that composition comprises:
Casing,
Center shaft, is positioned at casing and can slides along own axes direction;
Latch, its rear end and center shaft are fixed, and front end has and is suitable for inserting pawl seat between cog to block the head of pawl seat, and the hook portion coordinated with stop pin;
Actuator, is set with on center shaft, for being pulled back by center shaft; Its both sides are connected to the stay cord parallel with center shaft;
First stop block, is fixed on end cap, is positioned in the pawl seat rotation direction of latch head, for preventing latch head bias;
Second stop block, is fixed on end cap, is positioned at the top of latch hook portion, overturns for preventing latch;
Latch retracing spring, on center shaft, two ends prop up center shaft and casing to cover respectively, make latch have the trend inserting pawl seat between cog;
Stay cord retracing spring, is enclosed within stay cord, and two ends prop up casing and actuator respectively, makes driving implement have proal trend.
2. guideway vehicle foundation brake according to claim 1 parks the relieving apparatus of cylinder, it is characterized in that: the middle part of described actuator has through hole, and is enclosed within the front end of center shaft by linear bearing.
3. guideway vehicle foundation brake according to claim 1 parks the relieving apparatus of cylinder, it is characterized in that: described central axis has the shoulder of outwardly convex, latch retracing spring two ends prop up aft end face and the casing of this shoulder respectively, and the aft end face of described actuator props up the front end face of center shaft shoulder.
4. guideway vehicle foundation brake according to claim 1 parks the relieving apparatus of cylinder, it is characterized in that: described latch hook portion has from top to bottom holds the first step and second step that stop pin plunger enters; When stop pin plunger enters first step, the head of latch inserts pawl seat between cog, and pawl seat is locked; When stop pin plunger enters second step, the head of latch departs from pawl seat between cog, and pawl seat is unlocked.
5. guideway vehicle foundation brake according to claim 1 parks the relieving apparatus of cylinder, it is characterized in that: also comprise two the stay cord protective covers being fixed on casing by baffle plate, two stay cords pass from the stay cord protective cover of correspondence respectively, are embedded with seal ring between described stay cord protective cover and casing.
6. guideway vehicle foundation brake according to claim 5 parks the relieving apparatus of cylinder, it is characterized in that: described casing has and holds center shaft and the actuator cavity in interior slip, and holds the hole that stay cord protective cover inserts from rear portion.
7. guideway vehicle foundation brake according to claim 1 parks the relieving apparatus of cylinder, it is characterized in that: described center shaft is threaded with latch and is integrated or integral casting forming is integrated.
8. guideway vehicle foundation brake according to claim 1 parks the relieving apparatus of cylinder, it is characterized in that: described casing is secured by bolts in end cap sidewall.
9. park a cylinder, it is characterized in that: include the relieving apparatus described in any one of claim 1-7.
10. according to claim 9ly park cylinder, it is characterized in that: the lower end cover of described stop pin has stop pin retracing spring, trend stop pin being had move downward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420721173.8U CN204264172U (en) | 2014-11-26 | 2014-11-26 | A kind of guideway vehicle foundation brake parks the relieving apparatus of cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420721173.8U CN204264172U (en) | 2014-11-26 | 2014-11-26 | A kind of guideway vehicle foundation brake parks the relieving apparatus of cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204264172U true CN204264172U (en) | 2015-04-15 |
Family
ID=52799055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420721173.8U Withdrawn - After Issue CN204264172U (en) | 2014-11-26 | 2014-11-26 | A kind of guideway vehicle foundation brake parks the relieving apparatus of cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204264172U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104442905A (en) * | 2014-11-26 | 2015-03-25 | 南京浦镇海泰制动设备有限公司 | Relieving device of railway vehicle basic braking parking cylinder |
| CN107499333A (en) * | 2017-09-04 | 2017-12-22 | 中车青岛四方车辆研究所有限公司 | Parking Brake Cylinders hand alleviates device |
-
2014
- 2014-11-26 CN CN201420721173.8U patent/CN204264172U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104442905A (en) * | 2014-11-26 | 2015-03-25 | 南京浦镇海泰制动设备有限公司 | Relieving device of railway vehicle basic braking parking cylinder |
| CN107499333A (en) * | 2017-09-04 | 2017-12-22 | 中车青岛四方车辆研究所有限公司 | Parking Brake Cylinders hand alleviates device |
| CN107499333B (en) * | 2017-09-04 | 2019-05-10 | 中车青岛四方车辆研究所有限公司 | Parking Brake Cylinders hand alleviates device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150415 Effective date of abandoning: 20170125 |