CN100389996C - Hand brake with automatic setting and loosing functions - Google Patents
Hand brake with automatic setting and loosing functions Download PDFInfo
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- CN100389996C CN100389996C CNB2004100086206A CN200410008620A CN100389996C CN 100389996 C CN100389996 C CN 100389996C CN B2004100086206 A CNB2004100086206 A CN B2004100086206A CN 200410008620 A CN200410008620 A CN 200410008620A CN 100389996 C CN100389996 C CN 100389996C
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Abstract
The present invention provides an automatic application hand brake which is a brake element for automatic application, and the hand brake is fastened to at least one railway vehicle through a hand brake assembly. The brake comprises an operation element, a control cylinder and an operation pawl, wherein the operation element has at least one ratchet wheel which is connected with a drive shaft of the hand brake assembly, the control cylinder is connected with a drive arm which is pivoted and connected with the drive shaft, and the operation pawl is engaged with the operation ratchet wheel. The reciprocating motion of the drive arm is caused by the control cylinder, and the reciprocating motion causes an operation arm to act in a reciprocating rotation mode to cause the application of at least one brake element further. A control device is connected with a liquid pressure source for starting and regulating the liquid pressure supply which is communicated with the control cylinder. In addition, the control device is connected with the liquid pressure source for stopping the automatic application or negative rotation of the brake under the condition of emergency, and the negative rotation causes unconscious motion.
Description
The cross reference of related application
The application relates to U.S. Patent Application Serial 10/217570, and this application name is called " using the hand brake winding mechanism automatically ", submit on August 13rd, 2002, and the cessionary who transfers the application.The application also relates to U.S. Patent Application Serial 10/201888, and this application name was called " automatic setting and unclamp the automatic application function of hand brake pneumatic circuit design II/ ", submitted the cessionary who transfers the application equally on July 24th, 2002.U.S. Patent Application Serial 10/217570 and 10/201888 disclosure are here as with reference to introducing.
Technical field
The present invention relates generally to be used in the hand brake assembly on the railway type vehicle, more particularly, the present invention relates to a kind of like this equipment, this equipment self actuating on this rolling stock does not need the chain on this hand brake of operator's manual coiling with using hand brake.
Background technology
It is as known in the art being used in case of emergency using at least one rolling stock hand braking mechanism that is fastened to the braking element on the rolling stock.Name is called the US Patent serial number 4368648 of " hand brake that is used for rolling stock " and has instructed this hand brake with a quick tripping-gear.They generally include one and are arranged in the vertical plane surface and are installed in big rotatable handwheel on the axle drive shaft, this handwheel can be by chain drum of a train of gears rotation, thereby roll a chain, this chain is fastened on the braking element of rolling stock at its end away from chain drum.When handwheel rotated in one direction, drg was used, and by one with the handwheel axle drive shaft on the ratchet of ratchet engaged prevent that the handwheel axle drive shaft from rotating in the opposite direction.
Can break away from and release the brake from stop gear by making ratchet, but this can cause the fast rotational of the gear of handwheel and train of gears.For avoiding the fast rotational of handwheel, proposed to be called the hand braking mechanism of " unclamping fast " mechanism.
Usually, these quick tripping-gears comprise a releasable connecting device between hand wheel shaft and train of gears.When connecting device unclamped, the gear fast rotational of train of gears was not subjected to the constraint of ratchet and stopping wheel, and the handwheel maintenance is static.
Be well known that in this area that the nominal chain tension that the new braking element of rolling stock needs is 13 inches, and the chain tension is 18 inches and represents brake shoe brake cheek to wear and tear and the worst pattern of the braking element that chain slack is too much.Here the instruction of US Patent serial number 4368648 is introduced among the application as reference.
American Association of Railway (AAR) regulation, the average load that the standard power hand braking mechanism should provide on chain is 3350 pounds, is that steering effort on 22 inches the wheel edge is 125 pounds and be applied to diameter, to set drg.
Aforementioned U. S. application serial number 10/217570 has proposed a kind of automatic application settings and has unclamped (ASR) hand braking equipment, is called ASR design II hand brake below, is used for using automatically above-mentioned at least one braking element.This equipment comprises an executive component with at least one ratchet, this ratchet can with at least one gear mesh of gear assembly in the casing member that is arranged at hand brake assemblies, be used for operating gear assembly on the direction that will cause at least one braking element to be used, this at least one braking element is fastened on the rolling stock by hand brake assemblies.Equipment also comprises the control cylinder and the actuating arm that extends from an end of this control cylinder that are installed on the rolling stock.This actuating arm has a first that connects with this executive component.This actuating arm can be with respect to the control cylinder crank motion apply a power to it after, thereby supplies the set pressure of q.s at least to executive component, thereby causes the application of this at least one braking element.A pressure source of supply connects with this control cylinder, is used for applying a power to actuating arm, thereby uses this at least one braking element automatically by hand brake assemblies.
Though proved that ASR design II hand brake realizing that aspect 3350 pounds of the chain vertical loads be enough, is running into difficulty aspect the vertical load that keeps above-mentioned acquisition over a long time.On the basis of the further data of collecting on the ASR design II hand brake, because setting from initial name, urgent reservoir pressure descends, cause on average keeping load to drop to and be lower than 3350 pounds of requirement.
As what can see from top discussion, it is favourable having a kind of so automatic application settings and release apparatus, and this equipment is used for hand brake, can provide and keep 3350 pounds required average chain load.
Usually, the stopper pipe pressure in the rolling stock is about 90 pound per square inches.In case of emergency, after having used foundation brakes, the equalization of pressure of urgent holder is set in the average initial name of 78 pound per square inches that are used for urgent hand braking application.Therefore the average initial name setting of 78 pound per square inches is the existing pressure of maximum that the ASR hand brake need obtain 3350 pounds required average load.Be set under the average initial nominal pressure of 70 pound per square inches by the ASR design II hand brake that improves pneumatic circuit having of aforementioned U. S. application serial number 10/201888 instruction and worked, the operational boundaries that fluctuates for nominal pressure is provided.Above-mentioned pneumatic circuit comprises the control setup that links with fluid pressure source, is used to supply and regulate the above-mentioned fluid pressure that leads to control cylinder, and is used in case of emergency stopping the automatic use or the counter-rotating actuating unintentionally of this brake equipment.
Because the brake-press lead pressure that refills after brake application in the rolling stock needs according to predetermined amount of time of required recovery pressure differential, and because ordinary train can comprise 150 rolling stocks, those of ordinary skills can be easy to see, it is favourable using the ASR hand brake, it can obtain required maintenance load with the urgent reservoir pressure that reduces, refill the time period to shorten integral body, more particularly, shorten owing to refill the time out of the whole train that causes.Further advantageously improve the efficient of ASR hand brake, more particularly, reduce to be arranged at the pressure drop of the handling device in the said equipment, and the size that reduces control cylinder.
Summary of the invention
Provide a kind of automatic application hand braking equipment, be used for using automatically at least one and be fastened to braking element on the rolling stock by hand brake assemblies.This equipment comprises a mounting bracket, and an executive component, this executive component have the ratchet at least one axle drive shaft that is connected to above-mentioned hand brake assemblies in the hand brake assemblies outside.This equipment also comprises a control cylinder that connects with an actuating arm, and this actuating arm pivots and is connected on the above-mentioned axle drive shaft, and comprises an operation pawl with the aforesaid operations ratchet engaged.Aforesaid operations ratchet and above-mentioned axle drive shaft and the stop gear that is arranged in the above-mentioned hand brake assemblies are done as a whole rotation, thereby prevent the part uncoiling of the chain roll of hand brake assemblies around gear.A spring installation is connected on the above-mentioned actuating arm, is used for pushing the aforesaid operations pawl to the aforesaid operations ratchet.Be provided with first and second brass shim spacer, be used for reducing substantially friction at above-mentioned actuating arm rotary course.Control cylinder is pivoted on the mounting bracket, can reduce the control cylinder stroke.The crank motion of the actuating arm that is caused by control cylinder can back and forth rotate motion arm, and then causes the application of at least one braking element.A control setup connects with fluid pressure source, is used to start and regulate the fluid pressure supply of leading to control cylinder.The another one control setup connects with fluid pressure source, is used in case of emergency stopping the automatic application or the counter-rotating actuating unintentionally of this brake equipment.
Goal of the invention
Therefore one of them main purpose of the present invention provide a kind of can with hand brake assemblies ingear equipment, it can self actuating and uses drg on the rolling stock.
Another object of the present invention provide a kind of can with the hand brake assemblies ingear equipment on the rolling stock, can obtain and keep for the required load of standard power hand brake.
A further object of the present invention provide a kind of can with the hand brake assemblies ingear equipment on the rolling stock, operation can be provided more efficiently.
Another purpose of the present invention provide a kind of can with the hand brake assemblies ingear equipment on the rolling stock, can use less space envelope line.
Another object of the present invention provide a kind of can with the hand brake assemblies ingear equipment on the rolling stock, can provide a urgency stop device to stop the automatic application of hand brake.
Except roughly aforesaid some purposes of the present invention and advantage, from more detailed description below, particularly when these detailed descriptions be to reach appended claims in conjunction with the accompanying drawings and when carrying out, those skilled in the art will understand various other purpose of the present invention and advantage easilier.
Description of drawings
Fig. 1 is the transparent view of ASR design II hand brake.
Fig. 2 is the front view of ASR design II hand brake, and special expression is according to the space structure of the ASR design II hand brake of the AAR gap profile of being set up.
Fig. 3 is the transparent view of ASR design III hand brake of the present invention, handwheel of the present invention and ratchet that expression is for clarity sake taken out from axle drive shaft.
Fig. 4 is the fragmentary, perspective view of ASR of the present invention design III hand brake, the handling device that special expression for clarity sake separates with ratchet.
Fig. 5 is the front view of ASR design III hand brake of the present invention, and special expression is according to the space structure of the ASR design III hand brake of the AAR gap profile of being set up.
Fig. 6 is the lateral plan of the ASR design III hand brake of the present invention shown in Fig. 5.
Fig. 7 is the side sectional view that designs the III hand brake along the ASR of the present invention that Fig. 5 center line 7-7 is got.
Fig. 8 is the fragmentary, perspective view of the hand brake of design II, and special expression is arranged at the orientation of the movable cam in the engaging and disengaging gear.
Fig. 9 is the fragmentary, perspective view of the hand brake of design III, and special expression is arranged at the orientation of the movable cam in the engaging and disengaging gear.
Figure 10 is the scheme drawing of ASR design II control circuit.
Figure 11 is the scheme drawing of ASR design III control circuit.
The specific embodiment
It is in order to help the normally used environment of reader understanding the present invention that following background information is provided.Unless special statement is arranged herein in addition, term used herein is not limited to any narrow especially explanation.
Before for a more detailed description to various embodiments of the present invention, be aware and understand for of the present invention, should be noted that in each accompanying drawing shown here that same parts with identical function is discerned with identical Reference numeral.
With reference to Fig. 1, cooperate with 20 hand brake assemblies of representing generally with one with the 10 ASR design II equipment of representing generally, this hand brake assemblies 20 is used for using automatically at least one and is fastened to brake equipment (not shown) on the rolling stock (not shown) with this hand brake assemblies 20.
This equipment 10 comprises one generally with 30 handling device of representing, its at least a portion, it is ratchet 150, can with generally with at least one chain rolls of hand braking gear assemblies of 40 expressions around gear 14 engagement, this hand braking gear assembly 40 is arranged in the housing 16 of this hand brake assemblies 20, is used for causing this gear assembly 40 of operation on the direction of this at least one brake application.Aforesaid operations device 30 also comprises a two action air cylinder 31, and this air cylinder 31 has a bar 37 that can cooperate with an actuating arm 152.At least one operation pawl 154 pin is connected on the above-mentioned actuating arm 152, and is provided with a spring installation 156 and is used for promoting operation pawl 154 and contacts with a ratchet 150.Above-mentioned two action air cylinder 31 is installed on the support 160, and this support 160 has and above-mentioned housing 16 bonded assembly attaching partss 162.Be provided with a lid 164, be used for preventing substantially that above-mentioned ratchet 150 and the engagement of above-mentioned chain roll between gear 14 are subjected to the approaching unintentionally of rolling stock staff.
In operation cylinder 31, apply a power and cause bar 37 outwards to move, and apply a downward force, make a tooth engagement in operation pawl 154 and the ratchet 150 to actuating arm 152 from cylinder 31.As shown in fig. 1, ratchet 150 rotation in the clockwise direction causes the chain roll of hand braking gear assembly 40 to rotate in the counterclockwise direction around gear 14, will cause the application of the coiling and the brake equipment (not shown) of chain (not shown) like this.In operation cylinder 31, be provided with the retracing spring 34 of illustrated best among at least one Fig. 9, be used for catch bar 37 and return its initial position.In addition, be provided with a cavity 153, be used for adapting at motion process and cooperate with the above-mentioned of bar 37 in actuating arm 152 inside.The chain roll that makes hand braking gear assembly 20 that repeats to exert pressure in operation cylinder 31 rotates enough amount around gear 14, thus the brake application device.
With further reference to Fig. 2, the space structure of the ASR design II hand brake relevant with AAR gap profile S-475 is shown.As can seeing from Fig. 2, ASR design II hand brake surpasses about 6 inches of the height of above-mentioned profile, but the more important thing is, it has surpassed 6 inches of the width of above-mentioned profile.
Among Fig. 3 to 7 illustrated best be called the ASR hand brake of the present invention that designs III here.
Generally with the 300 ASR equipment of representing, comprise one generally with 305 handling device of representing, its at least a portion, promptly operate ratchet 350, fully mesh with a drive shaft member 24, this drive shaft member 24 is arranged in the casing member 16 of this hand brake assemblies 20, is used for causing this hand brake assemblies 20 of operation on the direction of this at least one brake application.Aforesaid operations device 305 comprises also that generally with 310 mounting brackets of representing, this mounting bracket 310 has 312, one cylinder pivots 314 of a body part, and at least one is used for and above-mentioned housing 16 bonded assembly connecting devices 316.Preferably, one is installed on the above-mentioned mounting bracket 310 at pivot 314 places pivot with the 320 one action air cylinders of representing generally.Above-mentioned one action air cylinder 320 also has a bar 326, and this bar 326 can cooperate with 340 actuating arms of representing generally with one, has 342, one first pivots 344 of a body part and one second pivot 346.As illustrated best among Fig. 4, above-mentioned actuating arm 340 pivotally ring set on above-mentioned axle drive shaft 24.At least one operation pawl 354 pivots at first pivot, 344 places and is connected on the above-mentioned actuating arm 340, be used for to above-mentioned bar applies above-mentioned power after with a tooth engagement of aforesaid operations ratchet 350, and aforesaid operations ratchet 350 is rotated.Be provided with a spring installation 356 that is fastened on the above-mentioned actuating arm 340, be used for promoting operation pawl 354 and be arranged at least one toe joint of aforesaid operations ratchet 350 in-to-ins touching.
Be provided with a friction reducer arrangement in abutting connection with aforesaid operations ratchet 350 and above-mentioned actuating arm 340, be used for fully reducing the friction after above-mentioned actuating arm 340 rotations.In a preferred embodiment, above-mentioned friction reducer arrangement comprises one first brass shim spacer 358 (not shown), this brass shim spacer 358 has a flange 359 (not shown) that is installed between aforesaid operations ratchet 350 and the above-mentioned actuating arm 340, above-mentioned flange 359 (not shown) is arranged between above-mentioned body part 342 and the above-mentioned axle drive shaft 24, is used for fully reducing the friction between above-mentioned actuating arm 340 of its rotary course and above-mentioned axle drive shaft 24.Above-mentioned friction reducer arrangement also comprises second brass shim spacer 360 (not shown) that is installed between above-mentioned actuating arm 340 and the above-mentioned housing 16.Above-mentioned first and second brass shim spacer 358 and 360 are respectively applied for the friction that fully reduces in the rotary course of above-mentioned actuating arm 340.Replacedly, above-mentioned first pad 358 and above-mentioned second pad 360 can be made by having the plastic material that reduces character that rubs.As illustrated best among Fig. 7, between above-mentioned ratchet 350 is connected to handwheel 22 on the above-mentioned axle drive shaft 24, at least one known wave spring 352 is installed, be used to prevent that aforesaid operations ratchet 350 and above-mentioned actuating arm 340 from moving along the axis of above-mentioned axle drive shaft 24.The quantity of above-mentioned at least one wave spring 352 depends on the gap between above-mentioned ratchet 350 handwheels 22.Be provided with one and can cover 362 (not shown), be used for fully hiding aforesaid operations device 305 with above-mentioned mounting bracket 310 bonded assemblys.
In one action cylinder 320, apply a power bar 326 is outwards moved from above-mentioned cylinder 320, and apply a downward force, make an operation pawl 354 and a tooth engagement of operating in the ratchet 350 to actuating arm 340.As shown in Fig. 3,4 and 5, the rotation in the clockwise direction of operation ratchet 350 causes the miniature gears 50 of illustrated best in Fig. 8 and 9 to rotate in the clockwise direction, and further cause the chain roll of hand braking gear assembly 40 to rotate in the counterclockwise direction around gear 14, cause the application of the coiling and the brake equipment (not shown) of chain (not shown) like this.In operation cylinder 320, be provided with the retracing spring 328 of illustrated best among at least one Figure 10, be used for catch bar 326 and get back to its initial position.The chain roll that can make hand braking gear assembly 20 that repeats to exert pressure in above-mentioned cylinder 320 rotates enough amount around gear 14, thus the brake application device.
Those skilled in the art can be easy to see, above-mentioned one action cylinder 320 pivots at cylinder pivot 314 places and is connected on the above-mentioned mounting bracket 310, can eliminate the cavity 153 in this actuating arm 152 that is arranged at ASR design II hand brake, the stroke of above-mentioned cylinder 320 is reduced 1 inch at most, more particularly, can partly reduce operating pressure.
In the preferred embodiment, aforesaid operations ratchet 350 is installed in the outside of above-mentioned hand brake housing 16.Replacedly, by above-mentioned housing 16 is made amendment, make be arranged in the above-mentioned hand braking equipment 20 and in Fig. 8 and 9 illustrated best a stop gear 58 can with 340 engagements of above-mentioned actuating arm, the function of aforesaid operations ratchet 350 and the function of above-mentioned stop gear 58 can be combined.Also interchangeable is can pass through stop motion mechanisms 92 to be installed and the whole stop gear 58 of eliminating in housing 16 outsides.
With further reference to Fig. 5, can see, ASR design III hand brake is with the improvements that ASR design II hand brake is compared, and compares with 6 inches that are used for ASR design II hand brake, and the overhang that it will be projected into beyond the horizontal ASR gap profile has reduced about 2.5 inches.
The improved major cause of ASR design III hand brake can illustrate from Fig. 8 and 9, be arranged at shown in Fig. 8 and 9 in the above-mentioned hand brake assemblies 20 generally with the 42 part engaging and disengaging gear of representing.Above-mentioned engaging and disengaging gear 42 comprises a miniature gears 50 that is arranged at axle drive shaft 24 1 ends, and this miniature gears 50 meshes around gear 14 with chain roll in the chain winding process.Movable cam 44 with section part 46 cooperates with above-mentioned axle drive shaft 24, and can move axially towards ratchet 58.A retaining pawl 92 is arranged in the above-mentioned hand braking mechanism 20, is used in chain (not shown) winding process and above-mentioned stop gear 58 engagements, to prevent above-mentioned chain (not shown) uncoiling.
In the operation, for automatic brake application device, the rotation in the counterclockwise direction that above-mentioned chain roll is seen in as Fig. 8 and 9 around gear 14, thus strain the loose of chain.Up to beginning to build up this of tension force in chain when, axle drive shaft 24, miniature gears 50 and movable cam 44 are done as a whole whole rotation at chain roll in gear 14 rotary courses.When chain tension began to build up, this tension force was reflected in chain roll in gear 14, and transmitted by miniature gears 50, and stop gear 58 is clamped between the friction surface 56 and 57 (not shown).By such clamping stop gear 58, chain roll causes axle drive shaft 24 and ratchet 58 as the one rotation around the continuous rotation of gear 14, and up to the required chain tension of acquisition, and detent 92 is installed on the above-mentioned stop gear 58.When obtaining required chain tension, chain roll finishes around the rotation or the application of gear 14, is engaged on the detent 92 that is held on the stop gear 58 and prevents the chain uncoiling, because above-mentioned ratchet only allows above-mentioned stop gear 58 to rotate in the counterclockwise direction.
Special Fig. 8 with reference to the above-mentioned section 46 of expression orientation in ASR design II hand brake, chain roll around gear 14 each the rotation in, the above-mentioned section part 46 that is arranged in the above-mentioned movable cam 44 allows miniature gears 50 to rotate an angular transposition 47 between 14 to 19 degree in the clockwise direction, thereby causes the uncoiling of part chain.This part uncoiling must repeat rotation around the next one of gear 14 by chain roll and overcome, and this need produce additional torques by above-mentioned cylinder 31.
With reference to Fig. 9, the orientation of shown above-mentioned section 46 is applicable to ASR design III hand brake especially.Can see, owing to aforesaid operations ratchet 350 and above-mentioned axle drive shaft 24 and above-mentioned stop gear 58 rotate as one, the prestrain on miniature gears 50 in the counterclockwise direction of above-mentioned section 46, thus prevent the part uncoiling of chain roll around gear 14.Compare with 3.25 inches internal diameter in the ASR design II hand brake, owing to aforesaid operations gear 350 can be reduced to the internal diameter of one action cylinder 320 2.5 inches around the income that axle drive shaft 24 is provided with on the efficient that realizes substantially, thereby obtained 3350 pounds required chain vertical load with less pressure.
With reference to Figure 10, illustrate one be arranged in the ASR design II equipment generally with 200 control setups of representing.
Above-mentioned control setup 200 comprises and being fitted to each other and to one first crank motion valve gear 220 and one second crank motion valve gear 230 of operation cylinder 31 supply air pressure source 450.Also be provided with at least one control cock device 240, be used for the fluid pressure path is directed to again the rod end of cylinder 31, and an auxiliary retracing spring 34 turns back to its all answer position fully with piston 32.In addition, also be provided with at least one control cock device 250, be used for cancelling the automatic application that in emergency circumstances stops hand brake of operation unintentionally.At last, also be provided with valve gear 290, be used for fast fluid pressure being discharged into atmosphere from operation cylinder 31.
The process of tension chain (not shown) is to begin by the button 202 that actuating is connected on the control cock element 200.Making fluid pressure source 450 flow through above-mentioned valve 200 from a urgent holder (not shown) like this enters the priority valve 212 that is connected on the activated valve 210.Pressure is accumulated to a predetermined value and causes valve 212 to be opened in priority valve 212, and makes fluid pressure 450 flow through the above-mentioned valve 210 arrival first crank motion valve 220 and the second crank motion valves 230.When actuating arm 152 when button 232 on being connected to above-mentioned valve 230 cooperates, allow fluid pressure 450 to flow through valve 230, enter in the priority valve 224 that is connected on the first crank motion valve 220.Set pressure in the priority valve 224 makes valve 220 displacements, allows fluid pressure 450 to flow through above-mentioned valve 220 at four direction.The principal direction of fluid pressure is the rear side to piston 32, causes piston 32 drive spindles 33 downward, by quick exhaust valve 290 with air from cylinder in pushing back out atmosphere 284, the more important thing is that right-hand revolution bar 152 makes hand brake 20 tension.In addition, when the load on the chain applies fully, fluid pressure will flow to and activated valve 210 bonded assembly priority valves 214, make valve 210 be displaced to exhaust position, and cut off the fluid pressure source 450 from urgent holder.In addition, fluid pressure will flow through quick exhaust valve 280 and arrive and change-over valve 240 bonded assembly priority valves 242, make above-mentioned valve 240 displacements, and allow fluid pressure source 450 to flow to the front side of piston 32, and further auxiliary its returns the initial position.In addition, fluid pressure will be discharged in the atmosphere 284 by the choker 282 of adjustment type, thereby applies predetermined fluid pressure to priority valve 242.
In case piston 32 arrives the bottom of its strokes, actuating arm 152 is connected to button 222 on the first crank motion valve 220 with actuating, closes above-mentioned valve 220.In addition, retracing spring 34 is driven into its reference position with piston 32, shifts air onto atmosphere 284 from cylinder by quick exhaust valve 290.Significantly,, enter in the cylinder, and cooperates with retracing spring 34 and piston 32 is returned its reference position, the more important thing is, break away from automatic application device maintenance pawl 158 (not shown) from the fluid pressure of valve 240 near the end of return of stroke.In addition, actuating arm 152 cooperates with button 232, opens valve 230, and air is returned in the cylinder by the first crank motion valve 220.Equipment 10 continues these circulating motions, hand brake 20 is reeled fully and obtains 3350 pounds vertical chain load up to it.After having obtained above-mentioned load, the pressure in the pipeline between valve 220 and the valve 290 will increase, and make valve 210 displacements and will arrive atmosphere 24, but the more important thing is, close the supply of fluid pressure 450.Meanwhile, the set pressure in the priority valve 242 will cause valve 240 displacements, make fluid pressure flow to the bottom side of cylinder 31.
The last element of the hand braking control setup 200 of ASR design II comprises a shutoff valve 250, the brake application of be used to reverse braking maneuver or intentional error.Above-mentioned valve 250 coupled in series are between the first crank motion valve 220 and operation cylinder 31.Valve 250 is activated by a button 252, and has a spring reverse motion 254.Above-mentioned valve 250 will cut out fluid pressure flowing to operation cylinder 31 after the actuation button 252 in automatic application process, cause the fluid pressure in the pipeline between above-mentioned valve 250 and the operation cylinder 31 to be discharged into atmosphere by above-mentioned valve 250, meanwhile, fluid pressure in the pipeline 258 between the first crank motion valve 220 and the emergency trip valve 250 will be brought up to a set pressure, this set pressure causes 220 displacements of the first crank motion valve and cut-out to the fluid pressure supply 450 of using the loop greater than the pressure 246 in pressure in the priority valve 214 216 and the priority valve 242.
ASR design III hand brake is that than the improvements of ASR design II hand brake it has cancelled control cock 240, blow off valve 280 and blow off valve 290 that is used for the fluid pressure flow is directed into again the bar side of cylinder 31.As shown in Figure 11, owing to use one action cylinder 320, simplified generally with 307 control setups of representing, the result has improved the whole efficiency of ASR equipment 300.Be provided with a guiding valve 370, be used for after actuation button 252, closing fluid pressure supply to cylinder 320.Cause the fluid pressure in the pipeline 258 between above-mentioned first reciprocable valve 220 and the emergency trip valve 250 to be increased to a set pressure greater than the pressure in the priority valve 214 216, make 220 displacements of the first crank motion valve, and the fluid pressure supply 450 of using the loop is led in cut-out.In addition, can come operating valve device 200,210,220,230 and 250, as manual, machinery, electric power, electronics or pneumatic by multiple engine installation.
Preliminary test is carried out with three kinds of distinct methods with the performance output of checking ASR design III hand brake.
In first method, on AAR correction power tooth bar, ASR design III hand brake structure is tested with 10,13 and 18 inches chain strokes.On each chain stroke increment, the ASR hand brake is tested with 3500 cu.in. amount of supplied air under 70, the 65 and 60 pound per square inch pressure.Under each initiation pressure, carry out three tests, produce 9 test points altogether at each chain stroke increment.Record is with respect to the air supply pressure of time, vertical chain load and cylinder pressure in each test process.
In the second approach, use on 100 tons of trucies that are installed in rolling stock with 13 and 18 inches chain strokes
Brake assemblies is tested ASR design III hand brake structure.On each chain stroke increment, with the test of 3500 cu.in. air supplies under 70,65 and 60 pound per square inch pressure ASR hand brake.Under each initiation pressure, carry out three tests, produce 9 test points altogether at each chain stroke increment.Record is with respect to the air supply pressure of time, vertical chain load and cylinder pressure in each test process.
In the third method, on the body installation brake assemblies that is installed on the GATX tank car, ASR design III hand brake structure is tested with 13 and 18 inches chain strokes.On each chain stroke increment, with the test of 3500 cu.in. air supplies under 70,65 and 60 pound per square inch pressure ASR hand brake.Under each initiation pressure, carry out three tests, produce 9 test points altogether at each chain stroke increment.Before each test, stop mechanism is withdrawn into its maximum position, thereby brake beam and brake shoe brake cheek are drawn back from wheel, and producing than the bigger resistance that in this zone, may run on the brake system.Record is with respect to the air supply pressure of time, vertical chain load and cylinder pressure in each test process.
Below table 1 be that tension is 13 inches to nominal chain, maximum or the tension of worst case lower chain are 18 inches, the summary of the test result under whole three conditions under 70 pound per square inches, 65 pound per square inches and the 60 pound per square inch pressure.
As seeing from table 1, special in the 14th, 15 and 16 row, ASR design III hand brake can obtain 3350 pounds required load under full terms under the typical initial storage pressure of 70 pound per square inches.Can also see that be listed as shown in the 16th row as the 14th, except drg is installed with 18 inches the maximum chain tension test with body, ASR design III hand brake has obtained required load for full terms under 65 pound per square inch pressure.What have special significance is the test of carrying out under 60 pound per square inch pressure.Under this pressure, ASR design III hand brake is in the power tooth bar test method of 13 inches and 18 inches in the chain tension, and to strain at chain be to have obtained 3350 pounds required load in 13 inches the TMX drg.ASR design III hand brake has also obtained 96% of required 3350 pounds of load in the chain tension is 18 inches TMX drg test method, represent favourable performance, also expression need be carried out domain test to verify the performance output under the typical initial storage pressure of 60 pound per square inches fully.The domain test that has obtained the success of 3350 pounds of required load can consider that the initial urgent pressure store of typical case that will be used for hand braking application and TMX brake system is set at 60 pound per square inches, refills the required time thereby shorten to above-mentioned urgent holder and stopper pipe pressure to AAR brake system commission proposed.
With
Brake unit is installed has been carried out further test, to determine the improved amount of ASR design III hand brake than the ASRII hand brake.For chain tension is that 18 inches and initial pressure are that the situation of 70 pound per square inches has obtained test result.Following table 2 comprises the test result for ASR design II hand brake, and following table 3 comprises the test result for ASR design III hand brake.
Be listed as the 6th in the 7th row and the table 3 with reference to the 7th in the table 2 especially and be listed as the 7th row, determine, the vertical chain load of average maintenance that obtains with ASR design III hand brake surpasses the vertical chain load 45% of average maintenance that obtains with ASR design II hand brake.Be listed as the 6th in the 5th row and the table 3 with further reference to the 7th in the table 2 and be listed as the 5th row, can see that the favourable growth that on average keeps vertical chain load is only to be realized by the growth of the vertical chain load 3.4% of average peak.
Must be noted that with reference to the row of the 6th in the table 2, cylinder and reservoir pressure are balanced in ASR design II hand brake test process, thereby drg is not delivered to the hand brake unit with chain load from ASR equipment.On the basis of the successful test of finishing under 90 pound per square inches, the typical load loss in the loading transfer process approximately is 1000 pounds in front.Therefore estimate that it is that the peak level chain load deducts 1000 pounds that horizontal link chain keeps load.
Must be noted that also with reference to row of the 5th in table 2 and 3 and the 7th row, vertical chain load is to calculate on the basis of measured horizontal link chain load, because the AAR regulation, above-mentioned horizontal link chain load must be 90% of above-mentioned vertical chain load.
Be listed as the 6th in the 3rd row and the table 3 with reference to the 7th in the table 2 in addition and be listed as the 3rd row, can see, the favourable growth of the vertical chain load of parallel maintenance is to reduce to realize with 36% of the loss of pressure of ASR design III hand brake, has obtained operation more efficiently.
Table 1ASR design III summarizes the development and testing of 13 inches and 18 inches chain tensions
The ASR design II of table 2 under 70 pound per square inches and 18 inches chain tension situations
The result
The ASR design II of table 3 under 70 pound per square inches and 18 inches chain tension situations
The result
Be used to realize presently preferred embodiment of the present invention and various other alternative embodiment although listed in detail according to patent law, the technical personnel in the hand brake field under the present invention will be recognized and realize various substitute modes of the present invention under the situation of the spirit and scope that do not break away from claims.
Claims (10)
1. an automatic setting and unclamp hand brake, can cooperate with a hand brake assembly, be used for using automatically at least one and be fastened to brake equipment on the rolling stock that has this hand brake assembly, above-mentioned hand brake assembly has a chain roll around gear, axle drive shaft in housing that is arranged at above-mentioned hand brake assembly, a handwheel that is installed on above-mentioned axle drive shaft one end, engaging and disengaging gear with a miniature gears, above-mentioned miniature gears is arranged at a far-end of above-mentioned axle drive shaft, above-mentioned miniature gears in the chain winding process with above-mentioned chain roll around gear mesh, one and above-mentioned axle drive shaft ingear ratchet, a ratchet that is arranged in the above-mentioned housing, above-mentioned ratchet cooperates with above-mentioned ratchet and prevents that above-mentioned chain roll is around the gear uncoiling, the operation ratchet that can cooperate with this hand brake assembly, be used to operate this hand brake assembly, this will cause the application of this at least one brake equipment, a mounting bracket that is connected on the above-mentioned housing, a control cylinder that is installed on the above-mentioned mounting bracket, actuating arm with one first pivot and one second pivot, above-mentioned actuating arm connects with above-mentioned control cylinder at the above-mentioned second pivot place, above-mentioned actuating arm can be with respect to above-mentioned control cylinder crank motion apply a power to it after, thereby supply a certain amount of set pressure to the aforesaid operations ratchet, this a certain amount of application that enough causes above-mentioned at least one brake equipment; An operation pawl, this operation pawl is connected on the above-mentioned actuating arm, apply above-mentioned power to the above-mentioned actuating arm with the aforesaid operations ratchet in a tooth mesh and cause the rotation of above-mentioned ratchet; A spring installation, this spring installation is fastened on the above-mentioned actuating arm, the above-mentioned toe joint that is used for promoting aforesaid operations pawl and aforesaid operations ratchet touches, a control setup that links with a fluid pressure source, above-mentioned control setup is used for starting and regulates and supply above-mentioned fluid pressure to above-mentioned control cylinder, and above-mentioned control setup is used in case of emergency stopping this at least one brake equipment or counter-rotating activates unintentionally; Improvements comprise:
Aforesaid operations ratchet and the engagement of above-mentioned drive rod assembly, the aforesaid operations ratchet is installed in the outside of above-mentioned hand brake housing; Aforesaid operations ratchet and above-mentioned axle drive shaft and above-mentioned ratchet are done as a whole rotation, thereby above-mentioned ratchet can prevent the part uncoiling of above-mentioned chain roll around gear;
Ring set is on above-mentioned axle drive shaft pivotally for above-mentioned actuating arm, and above-mentioned actuating arm is installed in the outside with the above-mentioned hand brake housing of aforesaid operations ratchet adjacency; And
Wherein above-mentioned control cylinder is an one action cylinder.
2. automatic setting as claimed in claim 1 and unclamp hand brake, wherein the aforesaid operations ratchet is installed in the inside of above-mentioned housing.
3. automatic setting as claimed in claim 2 and unclamp hand brake, wherein the aforesaid operations ratchet in the chain winding process with above-mentioned ratchet engagement, the aforesaid operations ratchet replaces above-mentioned stop gear.
4. automatic setting as claimed in claim 1 and unclamp hand brake, wherein above-mentioned control cylinder is pivoted on the above-mentioned mounting bracket at above-mentioned cylinder pivot place.
5. automatic setting as claimed in claim 1 and unclamp hand brake, wherein the diameter of above-mentioned control cylinder is approximately 2.5 inches.
6. automatic setting as claimed in claim 1 and unclamp hand brake also comprises a friction reducer arrangement that is provided with in abutting connection with the aforesaid operations ratchet, and above-mentioned friction reducer arrangement is used to reduce the friction after above-mentioned actuating arm rotation.
7. automatic setting as claimed in claim 6 and unclamp hand brake, wherein above-mentioned friction reducer arrangement comprises:
(a) one first pad, this first pad has a flange that is installed between aforesaid operations ratchet and the above-mentioned actuating arm, above-mentioned first pad reduces friction in above-mentioned actuating arm rotary course, above-mentioned flange is arranged between above-mentioned actuating arm and the above-mentioned axle drive shaft, is used for reducing the friction between above-mentioned actuating arm of its rotary course and above-mentioned axle drive shaft; And
(b) second pad that is installed between above-mentioned actuating arm and the above-mentioned housing, above-mentioned second pad reduces the friction in above-mentioned actuating arm rotary course.
8. automatic setting as claimed in claim 7 and unclamp hand brake, wherein above-mentioned first and second pads are brass.
9. automatic setting as claimed in claim 7 and unclamp hand brake, wherein above-mentioned first and second pads are to have the plastic material that friction reduces character.
10. automatic setting as claimed in claim 1 and unclamp hand brake wherein is equipped with at least one known wave spring between above-mentioned ratchet and above-mentioned handwheel, be used to prevent that aforesaid operations ratchet and above-mentioned actuating arm from moving along the axis of above-mentioned axle drive shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100086206A CN100389996C (en) | 2004-03-12 | 2004-03-12 | Hand brake with automatic setting and loosing functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100086206A CN100389996C (en) | 2004-03-12 | 2004-03-12 | Hand brake with automatic setting and loosing functions |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1666914A CN1666914A (en) | 2005-09-14 |
| CN100389996C true CN100389996C (en) | 2008-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100086206A Expired - Fee Related CN100389996C (en) | 2004-03-12 | 2004-03-12 | Hand brake with automatic setting and loosing functions |
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| Country | Link |
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| CN (1) | CN100389996C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2008229706A1 (en) | 2007-10-05 | 2009-04-23 | Aristocrat Technologies Australia Pty Limited | Lighting apparatus for a gaming machine cabinet |
| CN103693380B (en) * | 2013-12-13 | 2015-09-02 | 安徽巨一自动化装备有限公司 | Collecting and sending conveyer clutch switching mechanism |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4489814A (en) * | 1982-08-02 | 1984-12-25 | Acf Industries, Incorporated | Hand brake arrangement |
| US6179093B1 (en) * | 1998-09-18 | 2001-01-30 | Westinghouse Air Brake Company | Power source activated handbrake release mechanism |
| US6279689B1 (en) * | 1999-01-20 | 2001-08-28 | Westinghouse Air Brake Company | Hydraulic parking brake for a railroad vehicle braking system |
| CN1344642A (en) * | 2000-09-18 | 2002-04-17 | 西屋气刹车技术股份有限公司 | Device for quick-releasing mechanism in rail-vehicle hand brake |
| CN1356230A (en) * | 2000-09-15 | 2002-07-03 | 约翰·M·杰克逊 | Manual Brake for railway carriage |
| CN1433915A (en) * | 2001-08-17 | 2003-08-06 | 西屋气动刹车技术公司 | Automatic acted hand brake winding mechanism |
-
2004
- 2004-03-12 CN CNB2004100086206A patent/CN100389996C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4489814A (en) * | 1982-08-02 | 1984-12-25 | Acf Industries, Incorporated | Hand brake arrangement |
| US6179093B1 (en) * | 1998-09-18 | 2001-01-30 | Westinghouse Air Brake Company | Power source activated handbrake release mechanism |
| US6279689B1 (en) * | 1999-01-20 | 2001-08-28 | Westinghouse Air Brake Company | Hydraulic parking brake for a railroad vehicle braking system |
| CN1356230A (en) * | 2000-09-15 | 2002-07-03 | 约翰·M·杰克逊 | Manual Brake for railway carriage |
| CN1344642A (en) * | 2000-09-18 | 2002-04-17 | 西屋气刹车技术股份有限公司 | Device for quick-releasing mechanism in rail-vehicle hand brake |
| CN1433915A (en) * | 2001-08-17 | 2003-08-06 | 西屋气动刹车技术公司 | Automatic acted hand brake winding mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1666914A (en) | 2005-09-14 |
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