CN203958127U - A kind of empty and load brake equipment of selecting output - Google Patents
A kind of empty and load brake equipment of selecting output Download PDFInfo
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- CN203958127U CN203958127U CN201420383095.5U CN201420383095U CN203958127U CN 203958127 U CN203958127 U CN 203958127U CN 201420383095 U CN201420383095 U CN 201420383095U CN 203958127 U CN203958127 U CN 203958127U
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Abstract
The utility model discloses a kind of empty and load brake equipment of selecting output, comprise valve body, pressure adjustmenting mechanism, empty spring feedback mechanism, arm of action, Output pressure mechanism, boiler check valve, feed cock and electromagnetic valve, described valve body is divided into upper valve body and lower valve body, described electromagnetic valve is fixed on lower valve body, and is connected with the first feedback cavity and the second feedback cavity; Described empty spring feedback mechanism comprises the first pre-control chamber and the second pre-control chamber, described upper valve body has two-way air inlet passage, described feed cock prolongs and is fixed on feed cock cover in lower valve body and moves up and down, and described feed cock bottom and the feed cock portion of putting are connected to the supply upper and lower two ends of spring.When the utility model has been realized train braking, the online adjustment of needed proportionate relationship curve, has improved system works efficiency, has reduced the complexity of system, has reduced design and has realized cost.
Description
Technical field
The utility model relates to train brake control field empty and load brake equipment, relate in particular to a kind of can according to speed of a motor vehicle difference realize pressure controlled select output empty and load brake equipment.
Background technology
Braking is to utilize artificially braking force to make train deceleration, stop, stoping the general name of its motion or acceleration.The quality of brake equipment directly has influence on the safe in operation of railroad train.Because train marshalling list is long, the complexity of rolling stock and brake equipment type, the braking potential of each car is different, impossible Complete Synchronization during braking, in addition the weight of train is large, speed is fast again, after braking, will just can stop through very long distance, and braking force control system need be controlled accurately to the stopping distance of train.Along with the growing passenger transportation demand of the mankind, the running velocity that improves train becomes more and more important, and the power that still only improves train is inadequate, must solve the braking problem of train simultaneously.
Empty and load brake equipment, as the vitals of brake system, is accepted the pressure of bogie truck air bellow as car weight signal, can export corresponding brake-pressure by certainty ratio relation.Thereby the function that realizes braking force to change with car weight and adjust at any time.Empty and load brake equipment has become EMU and the indispensable parts of city rail traffic motor vehicle braking system.
Along with the fast development of track traffic technology, the higher requirement also proposing for brake system.Chinese Industrial Standards (CIS) motor train unit require train according to train speed, braking deceleration to be adjusted online when braking, and this just requires empty and load brake equipment to have the function of the multiple proportionate relationship of output.
The empty and load brake equipment that current track vehicle uses is all simple proportion formulas, cannot to braking deceleration, adjust online according to the speed of a motor vehicle of train.Deceleration/decel is adjusted to requirement online when realizing train braking, industry at present or adopt simple proportion empty and load brake regulator and multi-cavity relay valve array mode, or adopts two empty and load brake regulators to pass through electromagnetic valve switching mode.This just causes system difficulty large, the problem that system failure point is many.
Based on above present situation, the proposition of the utility model patent is a kind of can realize according to train speed the empty and load brake regulator of many proportionate relationships output brake-pressures.
Utility model content
For problems of the prior art, overcome the deficiencies in the prior art, the purpose of this utility model is to provide a kind of empty and load brake equipment of selecting output, and the pressure that it can export ratio relation, has realized the Multistage Control to delivery pressure.
In order to achieve the above object, the utility model is by the following technical solutions: a kind of empty and load brake equipment of selecting output, comprise valve body, pressure adjustmenting mechanism, empty spring feedback mechanism, arm of action, Output pressure mechanism, boiler check valve, feed cock and electromagnetic valve, described valve body is divided into upper valve body and lower valve body, and described electromagnetic valve is fixed on lower valve body, and is connected with the first feedback cavity and the second feedback cavity; Described empty spring feedback mechanism comprises the first pre-control chamber and the second pre-control chamber, described upper valve body has two-way air inlet passage, described feed cock prolongs and is fixed on feed cock cover in lower valve body and moves up and down, and described feed cock bottom and the feed cock portion of putting are connected to the supply upper and lower two ends of spring.
The first described feedback cavity comprises the first pressure lamina membranacea, the first apply piston, pressure lamina membranacea back-up ring, pressure lamina membranacea back-up block, the sealing that the first described feedback cavity is embedded the first apply piston groove and formed with the first apply piston by the first pressure lamina membranacea inner circle, the sealing that the first pressure lamina membranacea cylindrical bottom and pressure lamina membranacea back-up block upper end circular arc form, the second pressure lamina membranacea inner circle embeds the second apply piston groove and forms with the sealing of the second apply piston formation and the sealing of the second pressure lamina membranacea cylindrical top and the formation of pressure lamina membranacea back-up block lower end circular arc, the second described feedback cavity comprises the second pressure lamina membranacea, the second apply piston, and the second described feedback cavity embeds the second apply piston groove by the second pressure lamina membranacea inner circle and the sealing forming with the second apply piston, the second pressure lamina membranacea cylindrical bottom and the formed sealing of lower valve body form.
Described pressure adjustmenting mechanism comprises spring box and is installed on the adjustment screw on spring box by screw thread, described spring box inside is provided with upper spring seat and lower spring cup, described adjustment screw lower end embed upper spring seat inside grooves and with groove inwall close contact, described upper spring seat and lower spring cup are nested in respectively adjustment both ends of the spring, described adjustment spring is between the convex tendon of upper spring seat and the convex tendon of lower spring cup, described adjustment spring is Compress Spring, and described lower spring cup bottom has groove.
Described the first pre-control chamber and the second pre-control chamber comprise the first pre-control lamina membranacea, the second pre-control lamina membranacea, pre-control piston, pre-control lamina membranacea back-up block, rubber ring is equipped with in described pre-control piston upper end, the first described pre-control chamber is the sealing that is embedded pre-control piston upper end groove and formed with pre-control piston by the first pre-control lamina membranacea inner circle, the first pre-control lamina membranacea cylindrical top pushes mutually the sealing of formation with upper valve body and the sealing of pre-control rubber ring of piston and upper valve body formation forms, the sealing that the second described pre-control chamber is embedded pre-control piston upper end groove and formed with pre-control piston by the first pre-control lamina membranacea inner circle, the sealing that the first pre-control lamina membranacea cylindrical bottom and pre-control lamina membranacea back-up block upper end circular arc form, the second pre-control lamina membranacea inner circle embeds pre-control piston lower end groove and forms with the sealing of pre-control piston formation and the press section of the second pre-control lamina membranacea cylindrical bottom and the formation of pre-control lamina membranacea back-up ring arc surface.
The first described pre-control lamina membranacea and the second pre-control lamina membranacea are the circular rings with inner circular part and cylindrical portion, described pre-control piston is to have upper and lower two circular grooves can carry out along valve body the cylinder of up-and-down movement, described pre-control lamina membranacea back-up block is have upper and lower two cambered surfaces and be arranged on the cylinder in valve body, described pre-control lamina membranacea back-up ring upper end is cambered surface, described pre-control lamina membranacea back-up ring compresses the second pre-control lamina membranacea and pre-control lamina membranacea back-up block and the second pre-control lamina membranacea cylindrical is fixed, in described valve body, trip ring is installed, described trip ring upside and pre-control piston lower surface are connected to pre-control and adjust the upper and lower both ends of the surface of spring.
Described Output pressure mechanism comprises the first apply piston and the second apply piston, the first pressure lamina membranacea and the second pressure lamina membranacea, described lower valve body has air inlet and outlet passageway, the first described apply piston and the second apply piston are the cylinders with inner groovy, the first described pressure lamina membranacea and the second pressure lamina membranacea are the circular ring with inner circular part and cylindrical portion, in described valve body, be provided with and there is the cylindrical pressure lamina membranacea back-up block of upper and lower two cambered surfaces and the cylindrical pressure lamina membranacea back-up ring that lower end is cambered surface, the first apply piston and the second apply piston prolong arm of action up-and-down movement.
Described arm of action upper end circle portion contacts with lower spring cup groove circle portion, described arm of action upper end first step is connected with pre-control piston underside, described arm of action lower end second step is connected with the first apply piston, rubber ring is equipped with in described arm of action lower end, and described arm of action is through the inner circle of pre-control piston inner circle, the first apply piston and the second apply piston.
Described pressure lamina membranacea back-up ring arc sections is compressed the first pressure lamina membranacea cylindrical top, and the first pressure lamina membranacea and the second pressure lamina membranacea and pressure lamina membranacea back-up block are fixed in lower valve body.
Described boiler check valve bottom be fixed on that valve seat on lower valve body contacts, valve seat under described being fixed on valve body contacted back valve spring.
The second described feedback cavity is communicated with Output pressure chamber, between the second described feedback cavity and Output pressure chamber, is fixed with choke.
Adopt after technique scheme, of the present utility model have a following beneficial effect: the utility model arranges the Output pressure mechanism of different active areas, and when train braking speed changes, electromagnetic valve moves the mode of operation of changeable high-low pressure output mechanism.Thereby the online adjustment of needed proportionate relationship curve, has improved system works efficiency while having realized train braking, has reduced the complexity of system, reduced design and realized cost.
Accompanying drawing explanation
Fig. 1 is a kind of empty and load brake equipment structural representation of selecting output of the utility model.
Fig. 2 is a kind of empty and load brake equipment delivery pressure curve synoptic diagram of selecting output of the utility model.
In figure: 1, adjust screw; 2, upper spring seat; 3, adjust spring; 4, lower spring cup; 5, pre-control piston; 6, the first pre-control lamina membranacea; 7, pre-control lamina membranacea back-up block; 8, the second pre-control lamina membranacea; 9, pre-control lamina membranacea back-up ring; 10, the first pre-control chamber; 11, the second pre-control chamber; 12, arm of action; 13, pre-control is adjusted spring; 14, trip ring; 15, the first feedback cavity; 16, the second feedback cavity; 17, Output pressure chamber; 18, total wind input cavity; 19, choke; 20, supply with valve pocket; 21, supply with spring; 22, feed cock; 23, check spring; 24, boiler check valve; 25, non-return valve seat; 26, electromagnetic valve, 27, the first apply piston; 28, pressure lamina membranacea back-up ring; 29, the first pressure lamina membranacea; 30, pressure lamina membranacea back-up block; 31, the second pressure lamina membranacea; 32, the second apply piston.
The specific embodiment
According to Figure of description and specific embodiment, the utility model is further explained below.
As shown in Figure 1, a kind of empty and load brake equipment of selecting output, comprise valve body, pressure adjustmenting mechanism, empty spring feedback mechanism, arm of action 12, Output pressure mechanism, boiler check valve 24, feed cock 22 and electromagnetic valve 26, described valve body is divided into upper valve body and lower valve body, and described electromagnetic valve 26 is fixed on lower valve body, and is connected with the first feedback cavity 15 and the second feedback cavity 16; Described empty spring feedback mechanism comprises the first pre-control chamber 10 and the second pre-control chamber 11, described upper valve body has two-way air inlet passage, described feed cock 22 prolongs to be fixed on to be supplied with valve pocket 20 in lower valve body and moves up and down, described feed cock 22 bottoms with supply with valve pocket 20 tops and be connected to and supply with spring Shang Xia 21 two ends.
The first described feedback cavity 15 comprises the first pressure lamina membranacea 29, the first apply piston 27, pressure lamina membranacea back-up ring 28 films, pressure lamina membranacea back-up block 30, the sealing that the first described feedback cavity 15 is embedded the first apply piston 27 grooves and formed with the first apply piston 27 by the first pressure lamina membranacea 29 inner circles, the sealing that the first pressure lamina membranacea 29 cylindrical bottoms and pressure lamina membranacea back-up block 30 upper end circular arcs form, the second pressure lamina membranacea 31 inner circles embed the second apply piston 32 grooves and form with the sealing of the second apply piston 32 formation and the sealing of the second pressure lamina membranacea 31 cylindrical tops and the 30 lower end circular arcs formation of pressure lamina membranacea back-up block, the second described feedback cavity 16 comprises the second pressure lamina membranacea 31, the second apply piston 32, and the second described feedback cavity 16 embeds the second apply piston 32 grooves by the second pressure lamina membranacea 31 inner circles and the sealing forming with the second apply piston 32, the second pressure lamina membranacea 31 cylindrical bottoms and the formed sealing of lower valve body form.The first pressure lamina membranacea 29 areas of described the first feedback cavity 15 are different from the second pressure lamina membranacea 31 areas of the second feedback cavity 16, the first feedback cavity 15 is connected or is cut off by electromagnetic valve 26 with the second feedback cavity 16, thereby realizes the selection output function of brake-pressure.
Described pressure adjustmenting mechanism is used for adjusting initial pressure, described pressure adjustmenting mechanism comprises spring box and is installed on the adjustment screw 1 on spring box by screw thread, described spring box inside is provided with upper spring seat 2 and lower spring cup 4, described adjustment screw 1 lower end embed upper spring seat 2 inside grooves and with groove inwall close contact, described upper spring seat 2 and lower spring cup 4 are nested in respectively adjusts spring 3 two ends, described adjustment spring 3 is between the convex tendon of upper spring seat 2 and the convex tendon of lower spring cup 4, described adjustment spring 3 is Compress Springs, described lower spring cup 4 bottoms have groove.Described adjustment screw 1 lower end circle portion extruding upper spring seat 2 inner circular parts, described adjustment spring 3 upper and lower sides are subject to respectively the pressure of upper spring seat 2 and lower spring cup 4.Be rotated down and adjust screw 1, described adjustment screw 1 pushes upper spring seat 2 downwards, and owing to being subject to the restriction of lower spring cup 4, described adjustment spring 3 is squeezed and compressive force is passed to lower spring cup 4.Lower spring cup 4 inner circular parts and the extruding of arm of action 12 upper end circle portions, thus pressure adjustmenting mechanism will be adjusted spring 3 application forces to arm of action 12 transmission.
Described empty spring feedback mechanism admission of air spring car weight signal is also converted to application force and is applied on arm of action 12, described the first pre-control chamber 10 and the second pre-control chamber 11 comprise the first pre-control lamina membranacea 6, the second pre-control lamina membranacea 8, pre-control piston 5, pre-control lamina membranacea back-up block 7, rubber ring is equipped with in described pre-control piston 5 upper ends, described pre-control piston 5 is accepted the application force of two pressure lamina membranacea conversion delivery pressures and is passed to power arm of action 12 and reaches equilibrium of pressure, the first described pre-control chamber 10 is the sealings that embedded pre-control piston 5 upper end grooves and formed with pre-control piston 5 by the first pre-control lamina membranacea 6 inner circles, the first pre-control lamina membranacea 6 cylindrical tops push mutually the sealing of formation with upper valve body and the sealing of pre-control piston 5 rubber rings and upper valve body formation forms, the sealing that the second described pre-control chamber 11 is embedded pre-control piston 5 upper end grooves and formed with pre-control piston 5 by the first pre-control lamina membranacea 6 inner circles, the sealing that the first pre-control lamina membranacea 6 cylindrical bottoms and pre-control lamina membranacea back-up block 7 upper end circular arcs form, the second pre-control lamina membranacea 8 inner circles embed pre-control piston 5 lower end grooves and form with the sealing of pre-control piston 5 formation and the press section of the second pre-control lamina membranacea 8 cylindrical bottoms and the 9 arc surfaces formation of pre-control lamina membranacea back-up ring.
The first described pre-control lamina membranacea 6 and the second pre-control lamina membranacea 8 are the circular rings with inner circular part and cylindrical portion, described pre-control piston 5 can carry out along valve body the cylinder of up-and-down movement for having upper and lower two circular grooves, described pre-control lamina membranacea back-up block 7 is have upper and lower two cambered surfaces and be arranged on the cylinder in valve body, described pre-control lamina membranacea back-up ring 9 upper ends are cambered surface, described pre-control lamina membranacea back-up ring 9 compression the second pre-control lamina membranaceas 8 are also fixed pre-control lamina membranacea back-up block 7 and the second pre-control lamina membranacea 8 cylindricals, trip ring 14 is installed in described valve body, described trip ring 14 upsides and pre-control piston 5 lower surfaces are connected to pre-control and adjust spring both ends of the surface Shang Xia 13.
Described Output pressure mechanism comprises the first apply piston 27 and the second apply piston 32, the first pressure lamina membranacea 29 and the second pressure lamina membranacea 31, described lower valve body has air inlet and outlet passageway, described the first apply piston 27 and the second apply piston 32 are the cylinders with inner groovy, the first described pressure lamina membranacea 29 and the second pressure lamina membranacea 31 are for having the circular ring of inner circular part and cylindrical portion, in described valve body, be provided with and there is the cylindrical pressure lamina membranacea back-up ring 28 that cylindrical pressure lamina membranacea back-up block 30 lower ends of upper and lower two cambered surfaces are cambered surface, the first apply piston 27 and the second apply piston 32 prolong arm of action 12 up-and-down movements.
Described arm of action 12 upper end circle portions contact with lower spring cup 4 groove circle portions, described arm of action 12 upper end first steps are connected with pre-control piston 5 downsides, described arm of action 12 lower end second steps are connected with the first apply piston 27, rubber ring is equipped with in described arm of action 12 lower ends, and described arm of action 12 is through the inner circle of pre-control piston 5 inner circles, the first apply piston 27 and the second apply piston 32.
Described pressure lamina membranacea back-up ring 28 arc sections are compressed the first pressure lamina membranacea 29 cylindrical tops, and the first pressure lamina membranacea 29 and the second pressure lamina membranacea 31 and pressure lamina membranacea back-up block 30 are fixed in lower valve body.
Described boiler check valve 24 bottoms be fixed on that valve seat on lower valve body contacts, valve seat under described being fixed on valve body contacted back valve spring.
The second described feedback cavity 16 is communicated with Output pressure chamber 17, between the second described feedback cavity 16 and Output pressure chamber 17, is fixed with choke 19.
Air pressure AS1 and AS2 do not enter the first pre-control chamber 10 and the second pre-control chamber 11.The first described pressure lamina membranacea 29 is bent downwardly under pressure AS1 effect, and air pressure is converted to application force reaches pre-control piston 5.The second pressure lamina membranacea 31 is bent downwardly under pressure AS2 effect, and air pressure is converted to application force reaches pre-control piston 5.The first pressure lamina membranacea 29 is identical with the payload space of the second pressure lamina membranacea 31.Therefore the interactively of Kong Huang pressure feedback mechanism is P
aS1* active area+P
aS2* active area=(P
aS1+ P
aS2) * active area.Pre-control piston 5 receives lamina membranacea application force, and application force is passed to arm of action 12.Adjusting spring 3 upper and lower sides is connected with pre-control lamina membranacea back-up ring 9 with pre-control piston 5 respectively.Pre-control lamina membranacea back-up ring 9 can move up and down, thereby adjusts the amount of compression generation application force of spring 3, and application force is applied to pre-control piston 5 lower ends.
Total wind enters total wind input cavity 18, arm of action 12 moves down and feed cock 22 is backed down downwards under the effect of adjusting spring 3 Ji Konghuang pressure feedback mechanisms, feed cock 22 upper surfaces are separated with supply valve pocket 20, and therefore total wind input cavity 18 air pressures enter Output pressure chamber 17 and outwards export brake-pressure.Air pressure enters the second feedback cavity 16 by Output pressure chamber 17 through feedback throttle bolt 19 simultaneously.The second pressure lamina membranacea 31 changes air pressure into application force to be promoted the second apply piston 32 and moves up, and pushes the first apply piston 27 application force is reached to drive link.When the adjustment spring 3 on acting on arm of action 12, pre-control are adjusted spring 13, Kong Huang pressure feedback mechanism and the second apply piston 32 suffered force balance, feed cock 22 moves up under the effect of supplying with spring 21, when arm of action 12 lower end valve ports, supply with valve pocket 20 valve ports and feed cock 22 upper surfaces when a plane (position shown in Fig. 1) total wind input cavity 18 is separated with Output pressure chamber 17.When if the adjustment spring 3 downward application forces of Huo Konghuang pressure feedback mechanism reduce, the application force that the second apply piston 32 makes progress to arm of action 12 is greater than adjusts the spring 3 downward application forces of Ji Konghuang pressure feedback mechanism, arm of action 12 moves up again, depart from feed cock 22 upper surfaces, the pressurized air in Output pressure chamber 17 is discharged from arm of action 12 inner vents.When arm of action 12 bearing up-down force balance, arm of action 12 moves down, and when arm of action 12 lower end valve ports, supplies with valve pocket 20 valve ports and feed cock 22 upper surfaces when a plane, and this valve reaches again state of equilibrium.
The area of thrust surface of the first effect lamina membranacea are less than the second effect lamina membranacea area of thrust surface, under identical adjustment spring 3 power and empty spring gas pressure, require the first apply piston 27 and the second apply piston 32 all to need application force to the power arm of action 12 that provides identical just can make system reach balance, therefore the first feedback cavity 15 pressure can be greater than the second feedback cavity 16 pressure.When electromagnetic valve 26 actions will be cut off two feedback cavity, delivery pressure acts on the first pre-control chamber 10.If when electromagnetic valve 26 is communicated with two feedback cavity, two feedback cavity pressure are identical, the second stressed identically no longer work in feedback cavity 16 both sides.On feedback pressure effect to the first pressure lamina membranacea 29 and by application force power, be passed to arm of action 12 to reach balance, realize the output of high-pressure curve.
The second feedback cavity 16 is connected by choke 19 with Output pressure chamber 17, can be according to the aperture of the size adjustment flow regulating valve of the second feedback cavity 16 so that more stable action and the output of empty and load brake regulator.
When product need be dismantled, total wind input cavity 18 carries out exhaust.Due to constructional feature, arm of action 12 still can be in balance position under the effect of piston.Now Output pressure chamber 17 compressed airs can be offset the spring force that check spring 23 acts on boiler check valve 24, and it is separated with valve seat, Output pressure chamber 17 is communicated with total wind input cavity 18, thus valve body internal pressure is all emptying.
Electromagnetic valve 26 is according to train braking demand, and control the first feedback cavity 15 is connected and cut-out with the second feedback cavity 16.Thereby switch the delivery pressure curve of empty and load brake equipment.
Product effect curves (as shown in Figure 2) method of adjustment is as follows:
1) AS pressure is made as 0, and regulating and adjusting spring 3 to delivery pressure is high pressure section empty wagons VL;
2) adjust pre-control and adjust the definite empty wagons AS point of spring 13;
3) curve oblique line place slope is by the first apply piston 27 area of thrust surface and AS piston area of thrust surface ratio;
4) control electromagnetic valve 26 actions and can obtain low pressure effect curves;
5) low pressure effect curves and High Pressure curved line relation are High Pressure piston and the ratio of low pressure apply piston area of thrust surface.
Claims (10)
1. can select the empty and load brake equipment of exporting for one kind, it is characterized in that comprising valve body, pressure adjustmenting mechanism, empty spring feedback mechanism, arm of action, Output pressure mechanism, boiler check valve, feed cock and electromagnetic valve, described valve body is divided into upper valve body and lower valve body, described electromagnetic valve is fixed on lower valve body, and is connected with the first feedback cavity and the second feedback cavity; Described empty spring feedback mechanism comprises the first pre-control chamber and the second pre-control chamber, described upper valve body has two-way air inlet passage, described feed cock prolongs and is fixed on feed cock cover in lower valve body and moves up and down, and described feed cock bottom and the feed cock portion of putting are connected to the supply upper and lower two ends of spring.
According to claim 1 a kind of select output empty and load brake equipment, it is characterized in that the first described feedback cavity comprises the first pressure lamina membranacea, the first apply piston, pressure lamina membranacea back-up ring, pressure lamina membranacea back-up block, the compression unit that the first described feedback cavity is embedded the first apply piston groove and formed with the first apply piston by the first pressure lamina membranacea inner circle, the compression unit that the first pressure lamina membranacea cylindrical bottom and pressure lamina membranacea back-up block upper end circular arc form, the second pressure lamina membranacea inner circle embeds the second apply piston groove and forms with the compression unit of the second apply piston formation and the compression unit of the second pressure lamina membranacea cylindrical top and the formation of pressure lamina membranacea back-up block lower end circular arc, the second described feedback cavity comprises the second pressure lamina membranacea, the second apply piston, and the second described feedback cavity embeds the second apply piston groove by the second pressure lamina membranacea inner circle and the compression unit forming with the second apply piston, the second pressure lamina membranacea cylindrical bottom and the formed compression unit of lower valve body form.
According to claim 1 a kind of select output empty and load brake equipment, it is characterized in that described pressure adjustmenting mechanism comprises spring box and is installed on the adjustment screw on spring box by screw thread, described spring box inside is provided with upper spring seat and lower spring cup, described adjustment screw lower end embed upper spring seat inside grooves and with groove inwall close contact, described upper spring seat and lower spring cup are nested in respectively adjustment both ends of the spring, described adjustment spring is between the convex tendon of upper spring seat and the convex tendon of lower spring cup, described adjustment spring is Compress Spring, described lower spring cup bottom has groove.
According to claim 3 a kind of select output empty and load brake equipment, it is characterized in that described the first pre-control chamber and the second pre-control chamber comprise the first pre-control lamina membranacea, the second pre-control lamina membranacea, pre-control piston, pre-control lamina membranacea back-up block, rubber ring is equipped with in described pre-control piston upper end, the first described pre-control chamber is the compression unit that is embedded pre-control piston upper end groove and formed with pre-control piston by the first pre-control lamina membranacea inner circle, the first pre-control lamina membranacea cylindrical top pushes mutually the compression unit of formation with upper valve body and the compression unit of pre-control rubber ring of piston and upper valve body formation forms, the compression unit that the second described pre-control chamber is embedded pre-control piston upper end groove and formed with pre-control piston by the first pre-control lamina membranacea inner circle, the compression unit that the first pre-control lamina membranacea cylindrical bottom and pre-control lamina membranacea back-up block upper end circular arc form, the second pre-control lamina membranacea inner circle embeds pre-control piston lower end groove and forms with the compression unit of pre-control piston formation and the press section of the second pre-control lamina membranacea cylindrical bottom and the formation of pre-control lamina membranacea back-up ring arc surface.
According to claim 4 a kind of select output empty and load brake equipment, it is characterized in that described the first pre-control lamina membranacea and the second pre-control lamina membranacea are the circular rings with inner circular part and cylindrical portion, described pre-control piston is to have upper and lower two circular grooves can carry out along valve body the cylinder of up-and-down movement, described pre-control lamina membranacea back-up block is have upper and lower two cambered surfaces and be arranged on the cylinder in valve body, described pre-control lamina membranacea back-up ring upper end is cambered surface, described pre-control lamina membranacea back-up ring compresses the second pre-control lamina membranacea and pre-control lamina membranacea back-up block and the second pre-control lamina membranacea cylindrical is fixed, in described valve body, trip ring is installed, described trip ring upside and pre-control piston lower surface are connected to pre-control and adjust the upper and lower both ends of the surface of spring.
According to claim 1 a kind of select output empty and load brake equipment, it is characterized in that described Output pressure mechanism comprises the first apply piston and the second apply piston, the first pressure lamina membranacea and the second pressure lamina membranacea, described lower valve body has air inlet and outlet passageway, the first described apply piston and the second apply piston are the cylinders with inner groovy, the first described pressure lamina membranacea and the second pressure lamina membranacea are the circular ring with inner circular part and cylindrical portion, in described valve body, be provided with and there is the cylindrical pressure lamina membranacea back-up block of upper and lower two cambered surfaces and the cylindrical pressure lamina membranacea back-up ring that lower end is cambered surface, the first apply piston and the second apply piston prolong arm of action up-and-down movement.
According to claim 6 a kind of select output empty and load brake equipment, it is characterized in that described arm of action upper end circle portion contacts with lower spring cup groove circle portion, described arm of action upper end first step is connected with pre-control piston underside, described arm of action lower end second step is connected with the first apply piston, rubber ring is equipped with in described arm of action lower end, and described arm of action is through the inner circle of pre-control piston inner circle, the first apply piston and the second apply piston.
According to claim 6 a kind of select output empty and load brake equipment, it is characterized in that described pressure lamina membranacea back-up ring arc sections compresses the first pressure lamina membranacea cylindrical top, and the first pressure lamina membranacea and the second pressure lamina membranacea and pressure lamina membranacea back-up block are fixed in lower valve body.
9. according to a kind of described in claim 1,2,3 or 6, select the empty and load brake equipment of output, it is characterized in that described boiler check valve bottom and be fixed on that valve seat on lower valve body contacts, the valve seat under described being fixed on valve body contacted back valve spring.
10. according to a kind of empty and load brake equipment of selecting output described in claim 1,2,3 or 6, it is characterized in that the second described feedback cavity is communicated with Output pressure chamber, is fixed with choke between the second described feedback cavity and Output pressure chamber.
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| CN201420383095.5U CN203958127U (en) | 2014-07-11 | 2014-07-11 | A kind of empty and load brake equipment of selecting output |
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| CN201420383095.5U CN203958127U (en) | 2014-07-11 | 2014-07-11 | A kind of empty and load brake equipment of selecting output |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104085387A (en) * | 2014-07-11 | 2014-10-08 | 南京浦镇海泰制动设备有限公司 | Output-selectable empty and load adjusting valve |
| CN108180306A (en) * | 2018-01-18 | 2018-06-19 | 宁波海天金属成型设备有限公司 | A kind of hydraulic resistance balance adjusts the control structure of valve deck |
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2014
- 2014-07-11 CN CN201420383095.5U patent/CN203958127U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104085387A (en) * | 2014-07-11 | 2014-10-08 | 南京浦镇海泰制动设备有限公司 | Output-selectable empty and load adjusting valve |
| CN108180306A (en) * | 2018-01-18 | 2018-06-19 | 宁波海天金属成型设备有限公司 | A kind of hydraulic resistance balance adjusts the control structure of valve deck |
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Address after: 211800 Nanjing City, Pukou Province Economic Development Zone, Jiangsu Road, No. 10 Patentee after: Nanjing Zhongche town Haitai Brake Equipment Co Ltd Address before: 211800 Nanjing City, Pukou Province Economic Development Zone, Jiangsu Road, No. 10 Patentee before: Nanjing Puzhen Haitai Brake Equipment Co., Ltd. |