CN105673741A - Brake pump of loader - Google Patents
Brake pump of loader Download PDFInfo
- Publication number
- CN105673741A CN105673741A CN201610211766.3A CN201610211766A CN105673741A CN 105673741 A CN105673741 A CN 105673741A CN 201610211766 A CN201610211766 A CN 201610211766A CN 105673741 A CN105673741 A CN 105673741A
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- China
- Prior art keywords
- brake
- piston
- chamber
- valve
- spring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
- F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
- F16D65/22—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for pressing members apart, e.g. for drum brakes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2121/00—Type of actuator operation force
- F16D2121/02—Fluid pressure
- F16D2121/04—Fluid pressure acting on a piston-type actuator, e.g. for liquid pressure
- F16D2121/06—Fluid pressure acting on a piston-type actuator, e.g. for liquid pressure for releasing a normally applied brake
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2121/00—Type of actuator operation force
- F16D2121/02—Fluid pressure
- F16D2121/08—Fluid pressure acting on a membrane-type actuator, e.g. for gas pressure
- F16D2121/10—Fluid pressure acting on a membrane-type actuator, e.g. for gas pressure for releasing a normally applied brake
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Systems And Boosters (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The invention discloses a brake pump of a loader. Two brake cavities, a traveling brake cavity and a stop brake cavity are formed in a brake pump shell; a first piston is arranged in the stop brake cavity; a first push rod is arranged on the left side of the first piston; a main spring is arranged on the right side of the first piston; a rubber bowl is arranged in the traveling brake cavity; the two braking cavities comprise a left brake cavity and a right brake cavity; a second piston is arranged in the left brake cavity; a first resetting spring is arranged on the left side of the second piston; a third piston is arranged in the right brake cavity; a second resetting spring is arranged on the left side of the third piston; a spring base is arranged on the left side of the rubber bowl; a second push rod and a third push rod are fixed on the left end face of the spring base; a first spring sleeves the second push rod; a second spring sleeves the third push rod; the second push rod corresponds to the second piston; the third push rod corresponds to the third piston; a first liquid storage tank is arranged above the left brake cavity; and a second liquid storage tank is arranged above the right brake cavity. The brake pump is good in brake effect and can be used safely and reliably.
Description
Technical field
The present invention relates to a kind of brake pump, particularly relate to a kind of loader brake pump.
Background technology
Existing loader parking brake adopts centre disk type vehicle stopping braking, and braking dish is fixed on power transmission shaft, mechanical operation, and this brake gear could can only use after loader comes to a complete stop, if loader uses under steam, very easily causes power transmission shaft and vehicle bridge to damage; If loader quality is excessive or in acclive local parking, very easily occurs that parking is malfunctioning, easily has an accident. It addition, once handbrake mechanism or transmission shaft failure, brake will be malfunctioning; When driving, if any component failure such as air pump, pipeline, gas receiver, brake valves, brake will be malfunctioning, very easily has an accident.
Additionally, although the utility model patent CN204488780U of the applicant also discloses that a kind of loader brake pump, above-mentioned brake pump is improved to some extent, but this brake pump brake chamber is provided with two set pistons of series connection, form two liquid outlet channels, if once brake chamber shell is damaged, full car brake failure can be caused; It addition, two set piston seal wear out failures, the liquid in two fluid reservoirs alters liquid mutually, reduces braking effect; And inside this brake pump brake chamber, it is provided with complicated spring structure, and in work, spring is easily stuck, especially the 1st easy stuck inefficacy of back-moving spring, form brake fault, car braking is brought very big hidden danger.
Summary of the invention
The technical problem to be solved in the present invention: provide a kind of braking effect good, use safe loader brake pump.
The technical solution of the present invention is: a kind of loader brake pump, including brake pump housing, being provided with brake chamber, service brake cavity and stopping brake chamber in brake pump housing, service brake cavity is positioned at the left side in stopping brake chamber, and brake chamber is positioned at the left side of service brake cavity; Stopping brake chamber is provided with the 1st piston, 1st piston can move left and right in stopping brake chamber, stopping brake chamber is divided into stopping brake air storage chamber and the right chamber of stopping brake by the 1st piston, stopping brake air storage chamber is positioned at the left side of the right chamber of stopping brake, stopping brake air storage chamber is provided with stopping brake QI KOU, being provided with the 1st push rod on the left of 1st piston, the right side of the 1st piston is provided with main spring; Service brake cavity is provided with rubber cup, service brake cavity is divided into service brake left chamber and service brake air storage chamber by rubber cup, 1st piston can promote rubber cup to be moved to the left by the 1st push rod, service brake air storage chamber is positioned at the right side of service brake left chamber, and service brake air storage chamber is provided with service brake QI KOU;Described brake chamber is 2, respectively left brake chamber and right brake chamber, the left end of left brake chamber is provided with left liquid outlet channel, the left end of right brake chamber is provided with right liquid outlet channel, left liquid outlet channel communicates with left brake chamber, right liquid outlet channel communicates with right brake chamber, and left brake chamber is provided with the 2nd piston, and the left side of the 2nd piston is provided with the 1st back-moving spring; Right brake chamber is provided with the 3rd piston, the left side of the 3rd piston is provided with the 2nd back-moving spring, spring pedestal it is provided with on the left of rubber cup, spring pedestal left side is fixed with the 2nd push rod and the 3rd push rod, and the 2nd push rod is cased with the 1st auxiliary spring, and the 3rd push rod is cased with the 2nd auxiliary spring, 2nd push rod and the 2nd piston are corresponding, 3rd push rod and the 3rd piston are corresponding, and the 2nd push rod can promote the 2nd piston to be moved to the left, and the 3rd push rod can promote the 3rd piston to be moved to the left; Left brake chamber be arranged over the 1st fluid reservoir, the 1st fluid reservoir is communicated with left brake chamber by the 1st passage, right brake chamber be arranged over the 2nd fluid reservoir, the 2nd fluid reservoir is communicated with right brake chamber by the 2nd passage.
As improvement, the left end of the 1st back-moving spring is provided with left chassis, left liquid outlet channel is provided with left control valve, described left control valve includes left rubber cup, left leather cup base and left valve spring, left rubber cup is positioned at the left side of left leather cup base, the right-hand member of left leather cup base is provided with left valve spring, left valve spring and left chassis Elastic Contact; The left end of the 2nd back-moving spring is provided with right chassis, right liquid outlet channel is provided with right control valve, described right control valve includes right rubber cup, right leather cup base and right valve spring, right rubber cup is positioned at the left side of right leather cup base, right leather cup base right-hand member is provided with right valve spring, right valve spring and right chassis Elastic Contact, left chassis and right chassis are equipped with liquid-through hole; Circumferential and the right leather cup base of left leather cup base be circumferentially with the 1st through hole, the center of left rubber cup and right rubber cup is designed with the 2nd through hole, and the 1st through hole and the 2nd through hole stagger mutually.
As improvement, described 1st passage is provided with left check valve, and described 2nd passage is provided with right check valve; Left check valve and right check valve are equipped with rubber blanket, rubber seat retainer and one-way valve spring, and rubber blanket is positioned at the top of rubber seat retainer, and the lower end of rubber seat retainer is provided with one-way valve spring.
As improvement, the right-hand member of brake pump housing is provided with screwed hole, and screwed hole is provided with the adjustment screw of adaptation, adjusts screw and can limit the position that the 1st piston moves right.
As improvement, the left side of the 2nd piston and the left side of the 3rd piston are designed with the 1st blind hole, the right side of the 2nd piston and the right side of the 3rd piston are designed with the 2nd blind hole, it is equipped with liquid storage cannelure, by crossing liquid channel connection between cannelure and the 1st blind hole in the middle part of the periphery of the 2nd piston and in the middle part of the periphery of the 3rd piston; The right side of the 1st back-moving spring is positioned at the 1st blind hole of the 2nd piston, and the right side of the 2nd back-moving spring is positioned at the 1st blind hole of the 3rd piston; The left side of the 1st push rod is positioned at the 2nd blind hole of the 2nd piston, and the left side of the 2nd push rod is positioned at the 2nd blind hole of the 3rd piston; The right circles side face of the 2nd piston and the right circles side face of the 3rd piston are provided with the sealing cannelure in more than 1 road, seal cannelure built with piston packing.
As improvement, the left side of left brake chamber is arranged over left vent valve, and the left side of right brake chamber is arranged over right vent valve.
As improvement, the left side of left brake chamber is provided with left brake switch, and the left side of right brake chamber is provided with right brake switch;Service brake left chamber is provided with the 1st pneumostome, and the right chamber of stopping brake is provided with the 2nd pneumostome.
As improvement, stopping brake QI KOU connects with the parking brake valve air gate of parking brake valve, and the parking brake valve air inlet of parking brake valve connects with the gas receiver gas outlet of gas receiver; The Foot braking valve air inlet of Foot braking valve connects with gas receiver gas outlet, and the Foot braking valve QI KOU of Foot braking valve connects with service brake QI KOU; Left liquid outlet channel and the 2nd braking clamp, the 4th braking clamp connection, right liquid outlet channel and the 1st braking clamp, the 3rd braking clamp connection.
Being surrounded with the 1st spring location card article as improvement, the right side of left leather cup base and the right side of right leather cup base, the right side on left chassis and the right side on right chassis are surrounded with the 2nd spring location card article; The bottom face of rubber seat retainer is surrounded with the 3rd spring location card article.
As improvement, left liquid outlet channel is provided with a left side and goes out liquid bolt, right liquid outlet channel is provided with the right side and goes out liquid bolt, a left side go out liquid bolt right-hand member and right go out liquid bolt right-hand member be designed with boss, a left side goes out liquid bolt and the right side goes out the liquid outlet channel that liquid bolt is provided with through, and left rubber cup or right rubber cup are buckled on the right-hand member outward flange of boss.
The solution have the advantages that: when loader parking, operate parking brake valve of the present invention, make to be positioned at the gases at high pressure pressure release of stopping brake air storage chamber, utilize the elastic reset of main spring, the 1st piston is promoted to be moved to the left, the 1st push rod is made to promote rubber cup, rubber cup drives the 2nd push rod and the 3rd push rod to be moved to the left simultaneously, 2nd push rod promotes the 2nd piston to be moved to the left, 3rd push rod promotes the 3rd piston to be moved to the left, thus the brake-fluid hydraulic coupling of the brake-fluid of the 2nd piston left end and the 3rd piston left end increases, and then the braking clamp of connection is made to brake. When loader is driven a vehicle, operating parking brake valve of the present invention, make stopping brake air storage chamber keep connecting with gas receiver, the gases at high pressure in gas receiver promote main spring to move right, rubber cup, under the resiliency urged of the 1st auxiliary spring and the 2nd auxiliary spring, drives the 2nd push rod and the 3rd push rod to move right; 2nd piston moves right under the resiliency urged of the 1st back-moving spring, 3rd piston moves right under the resiliency urged of the 2nd back-moving spring, thus the brake-fluid hydraulic coupling of the brake-fluid of the 2nd piston left end and the 3rd piston left end reduces, and then the braking clamp of connection is made to release braking. It can thus be appreciated that, spring energy-storage braking is adopted to there is essential distinction with the braking of existing parking brake machinery when loader brake pump of the present invention stops, it addition, present invention brake is to be braked by braking clamp, rather than braked by braking dish, good braking effect, use safety, even if loader quality is excessive or stops in acclive place, without the malfunctioning situation of parking occurs, it is not susceptible to accident, uses reliable. Service brake of the present invention and stopping brake are all braked by a set of braking clamp, simplify structure, and cost is low.
When loader driving conditions needing a little stop and brake, operate Foot braking valve of the present invention, service brake air storage chamber is made to keep connecting with gas receiver, gases at high pressure in gas receiver promote rubber cup to be moved to the left, rubber cup drives the 2nd push rod and the 3rd push rod to be moved to the left simultaneously, 2nd push rod promotes the 2nd piston to be moved to the left, 3rd push rod promotes the 3rd piston to be moved to the left, thus the brake-fluid hydraulic coupling of the brake-fluid of the 2nd piston left end and the 3rd piston left end increases, and then the braking clamp of connection is made to brake.When loader driving conditions need not be put stop and brake time, operate Foot braking valve of the present invention, the gas in service brake air storage chamber is made to exit, gas pressure in service brake air storage chamber reduces, rubber cup is under the resiliency urged of the 1st auxiliary spring and the 2nd auxiliary spring, the 2nd push rod and the 3rd push rod is driven to move right, 2nd piston moves right under the resiliency urged of the 1st back-moving spring, 3rd piston moves right under the resiliency urged of the 2nd back-moving spring, thus the brake-fluid hydraulic coupling of the brake-fluid of the 2nd piston left end and the 3rd piston left end reduces, and then make the braking clamp of connection release braking. when loader is driven a vehicle, operate parking brake valve of the present invention, make stopping brake air storage chamber keep connecting with gas receiver.
Therefore, the present invention had both possessed brake function in the traveling of air boosting pump, but also had parking function, and meanwhile, when any component failure such as air pump, pipeline, gas receiver, brake valves, existing brake pump all will lose brake function. Even and if the above-mentioned part fails of the present invention, also automatically can be moved to the left under the effect that the machinery of main spring recovers, thus, make braking clamp action, make loader self-actuating brake, improve the traffic safety of loader. Based on the structure of the present invention, equipped with the loader of brake pump of the present invention when parking, it is possible to stop for a long time in certain gradient, do not need the long-term pedal brake pedal of driver, save the driving intensity of driver, time saving and energy saving, and safety is high, braking effect is lasting stability more.
Additionally, the present invention is provided with two independent brake chambers, form the brake unit that two sets are independent, when a set of independent brake unit breaks down, another set of can also ensure positive braking, it is ensured that the safety of loader, and the present invention is provided with a set of air chamber (service brake cavity and stopping brake chamber), make package unit cost reduce, save installing space. Just because of the present invention is provided with the brake unit that two sets are independent, safety coefficient doubles, even if the 2nd piston packing or the 3rd piston packing wear and tear or lost efficacy, mutually alters liquid without the brake-fluid made in two fluid reservoirs, improves braking effect, improves use value.
The left liquid outlet channel of the present invention is provided with left control valve, and right liquid outlet channel is provided with right control valve, it is therefore an objective to control the turnover of brake-fluid, it is necessary to during brake, high pressure brake-fluid flows to braking clamp; When need not brake, brake liquid stream flows back to brake chamber, until sealing liquid outlet channel and brake chamber.
Accompanying drawing explanation
1, Fig. 1 is loader brake pump front view of the present invention.
2, Fig. 2 is loader brake pump top view of the present invention.
3, Fig. 3 is loader brake pump left view of the present invention.
4, Fig. 4 is loader brake pump partial sectional view of the present invention.
5, Fig. 5 is that the A-A of Fig. 1 is to sectional view.
6, Fig. 6 is the left brake chamber schematic diagram of the present invention.
7, Fig. 7 is the left control valve schematic diagram of the present invention.
8, Fig. 8 is the right brake chamber schematic diagram of the present invention.
9, Fig. 9 is the right control valve schematic diagram of the present invention.
10, Figure 10 is that the left rubber cup of the present invention and left leather cup base are in conjunction with front view.
11, Figure 11 is that the left rubber cup of the present invention and left leather cup base are in conjunction with right view.
12, Figure 12 is that the left rubber cup of the present invention and left leather cup base are in conjunction with rearview.
13, Figure 13 is that the B-B of Figure 12 is to sectional view.
14, Figure 14 is that rubber blanket of the present invention and rubber seat retainer are in conjunction with front view.
15, Figure 15 is that rubber blanket of the present invention and rubber seat retainer are in conjunction with right view.
16, Figure 16 is that rubber blanket of the present invention and rubber seat retainer are in conjunction with rearview.
17, Figure 17 is that the C-C of Figure 16 is to sectional view.
18, Figure 18 is the present invention left chassis front view.
19, Figure 19 is the present invention left chassis right view.
20, Figure 20 is the present invention left chassis rearview.
21, Figure 21 is that the D-D of Figure 20 is to sectional view.
22, Figure 22 is that a left side of the present invention goes out liquid bolt front view.
23, Figure 23 is that a left side of the present invention goes out liquid bolt left view.
24, Figure 24 is that the E-E of Figure 23 is to sectional view.
25, Figure 25 is that a left side of the present invention goes out liquid bolt right view.
26, Figure 26 is the present invention the 2nd piston front view.
27, Figure 27 is the present invention the 2nd piston left view.
28, Figure 28 is that the F-F of Figure 27 is to sectional view.
29, Figure 29 is the present invention the 2nd piston top view.
30, Figure 30 is the present invention the 2nd piston right view.
31, Figure 31 is loader brake pump pipeline connection diagram of the present invention.
In figure: 1, stopping brake air storage chamber, 2, service brake air storage chamber, 3, main spring, 4, 1st push rod, 5, rubber cup, 6, left liquid outlet channel, 7, right liquid outlet channel, 8, spring pedestal, 9, 4th pipeline, 10, 1st pipeline, 11, adjust screw, 12, parking brake valve, 13, Foot braking valve, 14, gas receiver, 15, 2nd pneumostome, 16, 1st pneumostome, 17, 1st braking clamp, 18, 2nd braking clamp, 21, 6th pipeline, 22, 5th pipeline, 24, 3rd pipeline, 25, 2nd pipeline, 26, sealing ring, 27, 1st piston, 30, stopping brake QI KOU, 31, service brake QI KOU, 32, the right chamber of stopping brake, 33, service brake left chamber, 34, parking brake valve air gate, 35, parking brake valve air inlet, 36, gas receiver gas outlet, 37, Foot braking valve air inlet, 38, pedal brake valve air gate, 41, left vent valve, 42, right vent valve, 42, 3rd braking clamp, 43, 4th braking clamp, 50, 1st fluid reservoir, 51, 2nd fluid reservoir, 54, left brake switch, 55, right brake switch, 56, 2nd piston, 57, 3rd piston, 64, 2nd push rod, 65, 3rd push rod, 66, 1st back-moving spring, 67, 2nd back-moving spring, 68, left chassis, 69, right chassis, 70, left valve spring, 71, right valve spring, 74, 1st auxiliary spring, 75, 2nd auxiliary spring, 77, right leather cup base, 78, left leather cup base, 79, right rubber cup, 80, left rubber cup, 81, 2nd through hole, 82, 1st through hole, 84, rubber blanket, 86, rubber seat retainer, 87, one-way valve spring, 90, cross liquid passage, 91, 1st blind hole, 92, 2nd blind hole, 93, liquid storage cannelure, 94, liquid-through hole, 95, threeway, 98, boss, 99, air pump.
Detailed description of the invention
Describe in detail below in conjunction with drawings and Examples.
As shown in Figures 1 to 5, one loader brake pump of the present invention, including brake pump housing, in brake pump housing, it is provided with brake chamber, service brake cavity and stopping brake chamber, service brake cavity is positioned at the left side in stopping brake chamber, and brake chamber is positioned at the left side of service brake cavity; Stopping brake chamber is provided with the 1st piston 27, it is provided with sealing ring 26 between described 1st piston 27 and stopping brake cavity wall, 1st piston 27 can move left and right in stopping brake chamber, stopping brake chamber is divided into stopping brake air storage chamber 1 and the right chamber 32 of stopping brake by the 1st piston 27, stopping brake air storage chamber 1 is positioned at the left side of the right chamber 32 of stopping brake, stopping brake air storage chamber 1 is provided with on the left of stopping brake QI KOU the 30, the 1st piston 27 and is provided with the 1st push rod 4, and the right side of the 1st piston 27 is provided with main spring 3;Service brake cavity is provided with rubber cup 5, service brake cavity is divided into service brake left chamber 33 and service brake air storage chamber 2 by rubber cup 5,1st piston 27 can promote rubber cup 5 to be moved to the left by the 1st push rod 4, service brake air storage chamber 2 is positioned at the right side of service brake left chamber 33, and service brake air storage chamber 2 is provided with service brake QI KOU 31; Described brake chamber is 2, respectively left brake chamber and right brake chamber, the left end of left brake chamber is provided with left liquid outlet channel 6, the left end of right brake chamber is provided with right liquid outlet channel 7, left liquid outlet channel 6 communicates with left brake chamber, right liquid outlet channel 7 communicates with right brake chamber, and left brake chamber is provided with the 2nd piston 56, and the left side of the 2nd piston 56 is provided with the 1st back-moving spring 66; Right brake chamber is provided with the 3rd piston 57, the left side of the 3rd piston 57 is provided with the 2nd back-moving spring 67, spring pedestal 8 it is provided with on the left of rubber cup 5, spring pedestal 8 left side is fixed with the 2nd push rod the 64 and the 3rd push rod 65, and the 2nd push rod 64 is cased with the 1st auxiliary spring 74, and the 3rd push rod 65 is cased with the 2nd auxiliary spring 75,2nd push rod 64 is corresponding with the 2nd piston 56,3rd push rod 65 is corresponding with the 3rd piston 57, and the 2nd push rod 64 can promote the 2nd piston 56 to be moved to the left, and the 3rd push rod 65 can promote the 3rd piston 57 to be moved to the left; Left brake chamber be arranged over the 1st fluid reservoir 50, the 1st fluid reservoir 50 is communicated with left brake chamber by the 1st passage, right brake chamber be arranged over the 2nd fluid reservoir 51, the 2nd fluid reservoir 51 is communicated with right brake chamber by the 2nd passage. 1st fluid reservoir 50 is that left brake chamber supplements brake-fluid, and the 2nd fluid reservoir 51 is that right brake chamber supplements brake-fluid. The right-hand member of above-mentioned brake pump housing is provided with screwed hole, and screwed hole is provided with the adjustment screw 11 of adaptation, adjusts screw 11 and can limit the position that the 1st piston 27 moves right. The left side of described left brake chamber is arranged over left vent valve 41, and the left side of right brake chamber is arranged over right vent valve 42, it is therefore an objective to as required, and the air being mixed with by brake-fluid in brake chamber is released, and improves braking effect. The left side of described left brake chamber is provided with left brake switch 54, and the left side of right brake chamber is provided with right brake switch 55, provides switch for loader brake taillight and braking warning. Service brake left chamber 33 is provided with the 1st pneumostome 16, and the right chamber 32 of stopping brake is provided with the 2nd pneumostome 15. The right side of described left leather cup base 78 and the right side of right leather cup base 77 are surrounded with the 1st spring location card article 83, and the right side on left chassis 68 and the right side on right chassis 69 are surrounded with the 2nd spring location card article 92; The bottom face of rubber seat retainer 86 is surrounded with the 3rd spring location card article 85, and what arrange spring locator card entry is location and fixing spring, it is prevented that partially, spring is not easy stuck for spring displacement and pressure, improves result of use.
As shown in Fig. 6 to Figure 21, the left end of the 1st back-moving spring 66 of loader brake pump of the present invention is provided with left chassis 68, left liquid outlet channel 6 is provided with left control valve, described left control valve includes left rubber cup 80, left leather cup base 78 and left valve spring 70, left rubber cup 80 is positioned at the left side of left leather cup base 78, the right-hand member of left leather cup base 78 is provided with left valve spring 70, left valve spring 70 and left chassis 68 Elastic Contact; The left end of the 2nd back-moving spring 67 is provided with right chassis 69, right liquid outlet channel 7 is provided with right control valve, described right control valve includes right rubber cup 79, right leather cup base 77 and right valve spring 71, right rubber cup 79 is positioned at the left side of right leather cup base 77, right leather cup base 77 right-hand member is provided with right valve spring 71, right valve spring 71 and right chassis 69 Elastic Contact, left chassis 68 and right chassis 69 are equipped with liquid-through hole 94;Circumferential and the right leather cup base 77 of left leather cup base 78 be circumferentially with the 1st through hole 82, the center of left rubber cup 80 and right rubber cup 79 is designed with the 2nd through hole 81, and the 1st through hole the 82 and the 2nd through hole 81 staggers mutually. The left liquid outlet channel of the present invention is provided with left control valve, and right liquid outlet channel is provided with right control valve, it is therefore an objective to control the turnover of brake-fluid, it is necessary to during brake, high pressure brake-fluid can flow to braking clamp; When need not brake, brake-fluid flows back to brake chamber, until sealing liquid outlet channel and brake chamber. When braking, the 1st through hole 82 that high pressure brake-fluid is circumferentially with by left leather cup base 78 backs down left rubber cup 80, and the 2nd through hole 81 being provided with by left rubber cup 80 center flows to braking clamp; When braking, the high pressure brake-fluid in braking clamp overcomes the elastic force of left valve spring 70 to back down left leather cup base 78 to pass back into brake chamber. When left control valve both sides brake-fluid pressure is in a basic balance, both sides brake-fluid is sealed off by left control valve. Above-mentioned 1st passage is provided with left check valve, and described 2nd passage is provided with right check valve; Left check valve and right check valve are equipped with rubber blanket 84, rubber seat retainer 86 and one-way valve spring 87, and rubber blanket 84 is positioned at the top of rubber seat retainer 86, and the lower end of rubber seat retainer 86 is provided with one-way valve spring 87. Making brake-fluid enter left brake chamber only by the 1st fluid reservoir 50, the 2nd fluid reservoir 51 enters right brake chamber, and the brake-fluid in brake chamber can not be made to flow back into the 1st fluid reservoir the 50 or the 2nd fluid reservoir 51. Rubber blanket 84 ensures sealing effectiveness.
As shown in Figure 22 to Figure 24, the left liquid outlet channel 6 of loader brake pump of the present invention is provided with a left side and goes out liquid bolt 72, right liquid outlet channel 7 is provided with the right side and goes out liquid bolt 73, a left side go out liquid bolt 72 right-hand member and right go out liquid bolt 73 right-hand member be designed with boss 98, a left side goes out liquid bolt 72 and the right side goes out the liquid outlet channel 76 that liquid bolt 73 is provided with through, left rubber cup 80 or right rubber cup 79 are buckled on the right-hand member outward flange of boss 98, ensure, when control valve both sides brake-fluid pressure is in a basic balance, to control valve and effectively sealed off by both sides brake-fluid; When sealed, boss 98 also acts as the effect positioning left rubber cup 80 or right rubber cup 79.
As shown in Figure 25 to Figure 30, the left side of the 2nd piston 56 and the left side of the 3rd piston 57 of loader brake pump of the present invention are designed with the 1st blind hole 91, the right side of the 2nd piston 56 and the right side of the 3rd piston 57 are designed with the 2nd blind hole 92, it is equipped with liquid storage cannelure 93 in the middle part of the periphery of the 2nd piston 56 and in the middle part of the periphery of the 3rd piston 57, is connected by liquid passage 90 excessively between liquid storage cannelure 93 with the 1st blind hole 91; The right side of the 1st back-moving spring 66 is positioned at the 1st blind hole 91 of the 2nd piston 56, and the right side of the 2nd back-moving spring 67 is positioned at the 1st blind hole 91 of the 3rd piston 57; The left side of the 1st push rod 64 is positioned at the 2nd blind hole 92 of the 2nd piston 56, and the left side of the 2nd push rod 65 is positioned at the 2nd blind hole 92 of the 3rd piston 57; The right circles side face of the 2nd piston 56 and the right circles side face of the 3rd piston 57 are provided with the sealing cannelure in more than 1 road, seal cannelure built with piston packing, the present embodiment the 2nd piston the 56 and the 3rd piston 57 is designed with twice piston packing, respectively the 1st piston packing the 60 and the 2nd piston packing 61, the 3rd piston packing the 62 and the 4th piston packing 63. Be provided with left brake chamber and right brake chamber due to the present invention, the 2nd piston and the 3rd piston adhere to two independent brake chambeies separately, and during work, to compare the pressure of brake-fluid during piston series connection relatively low for the pressure of brake-fluid, it is possible to adopts 1 road piston packing, reduces cost.Liquid storage cannelure prevents brake-fluid from entering inner chamber on the right side of the 2nd piston or the 3rd piston on the one hand, the friction of lubrication the 2nd piston or the 3rd piston and brake chamber inwall simultaneously; Additionally, when blocking the 1st passage or the 3rd piston closure 2 passage when the 2nd piston, it is easy to the brake-fluid in the 1st fluid reservoir the 50 or the 2nd fluid reservoir 51 and enters brake chamber (brake-fluid in the 1st fluid reservoir the 50 or the 2nd fluid reservoir 51 is introduced into the 2nd piston liquid storage cannelure or the 3rd piston liquid storage cannelure, crosses liquid passage the 90, the 1st blind hole 91 again through the 2nd piston or the 3rd piston and enters piston left hand brake chamber).
As shown in figure 31, the stopping brake QI KOU 30 of loader brake pump of the present invention connects with the parking brake valve air gate 34 of parking brake valve 12, and the parking brake valve air inlet 35 of parking brake valve 12 connects with the gas receiver gas outlet 36 of gas receiver 14; The Foot braking valve air inlet 37 of Foot braking valve 13 connects with gas receiver gas outlet 36, and the Foot braking valve QI KOU 38 of Foot braking valve 13 connects with service brake QI KOU 31; Left liquid outlet channel 6 connects with the 2nd braking clamp the 18, the 4th braking clamp 43, and right liquid outlet channel 7 connects with the 1st braking clamp the 17, the 3rd braking clamp 42.
The present embodiment stopping brake QI KOU 30 is connected with the parking brake valve air gate 34 of parking brake valve 12 by the 1st pipeline 10, and the parking brake valve air inlet 35 of parking brake valve 12 is connected with the gas receiver gas outlet 36 of gas receiver 14 by the 2nd pipeline the 25, the 3rd pipeline 24; The Foot braking valve air inlet 37 of Foot braking valve 13 is connected with gas receiver gas outlet 36 by the 3rd pipeline 24, and the pedal brake valve air gate 38 of Foot braking valve 13 is connected with service brake QI KOU 31 by the 4th pipeline 9. When loader is driven a vehicle, operate parking brake valve of the present invention, make stopping brake air storage chamber keep connecting with gas receiver.
Gases at high pressure (gases at high pressure are produced by air pump 14) in gas receiver enter stopping brake air storage chamber 1 by the 3rd pipeline 24, threeway the 95, the 2nd pipeline 25, parking brake valve the 12, the 1st pipeline 10, gases at high pressure in gas receiver promote main spring to move right, rubber cup, under the resiliency urged of the 1st auxiliary spring the 74 and the 2nd auxiliary spring 75, drives the 2nd push rod the 64 and the 3rd push rod 65 to move right, 2nd piston 56 moves right under the resiliency urged of the 1st back-moving spring 66, and the 3rd piston 57 move right under the resiliency urged of the 2nd back-moving spring 67, on the left of 2nd piston 56, on the left of brake-fluid and the 3rd piston 57, brake-fluid pressure reduces, and then make the braking clamp of connection release braking, make braking clamp be in off position. when loader stops, operate parking brake valve of the present invention, make to be positioned at the gases at high pressure pressure release of stopping brake air storage chamber, utilize the elastic reset of main spring, the 1st piston is promoted to be moved to the left, the 1st push rod is made to promote rubber cup, rubber cup drives the 2nd push rod and the 3rd push rod to be moved to the left, 2nd push rod promotes the 2nd piston to be moved to the left, 3rd push rod promotes the 3rd piston to be moved to the left, so that on the left of the 2nd piston, brake-fluid pressure increases in left brake chamber, brake-fluid pressure on the left of the 3rd piston is made in right brake chamber to increase, and then make the braking clamp of connection brake, make braking clamp in running order.
The unspecified content of the present invention is prior art, and those skilled in the art can obtain inspiration from the present embodiment and prior art, carries out deformation and obtains other embodiments. Therefore, protection scope of the present invention should be determined according to scope of the claims.
Claims (10)
1. a loader brake pump, including brake pump housing, is provided with brake chamber, service brake cavity and stopping brake chamber in brake pump housing, service brake cavity is positioned at the left side in stopping brake chamber, and brake chamber is positioned at the left side of service brake cavity;Stopping brake chamber is provided with the 1st piston (27), 1st piston (27) can move left and right in stopping brake chamber, stopping brake chamber is divided into stopping brake air storage chamber (1) and the right chamber of stopping brake (32) by the 1st piston (27), stopping brake air storage chamber (1) is positioned at the left side of the right chamber of stopping brake (32), stopping brake air storage chamber (1) is provided with stopping brake QI KOU (30), 1st piston (27) left side is provided with the 1st push rod (4), and the right side of the 1st piston (27) is provided with main spring (3), service brake cavity is provided with rubber cup (5), service brake cavity is divided into service brake left chamber (33) and service brake air storage chamber (2) by rubber cup (5), 1st piston (27) can promote rubber cup (5) to be moved to the left by the 1st push rod (4), service brake air storage chamber (2) is positioned at the right side of service brake left chamber (33), and service brake air storage chamber (2) is provided with service brake QI KOU (31), it is characterized in that: described brake chamber is 2, respectively left brake chamber and right brake chamber, the left end of left brake chamber is provided with left liquid outlet channel (6), the left end of right brake chamber is provided with right liquid outlet channel (7), left liquid outlet channel (6) communicates with left brake chamber, right liquid outlet channel (7) communicates with right brake chamber, and left brake chamber is provided with the 2nd piston (56), and the left side of the 2nd piston (56) is provided with the 1st back-moving spring (66), right brake chamber is provided with the 3rd piston (57), the left side of the 3rd piston (57) is provided with the 2nd back-moving spring (67), rubber cup (5) left side is provided with spring pedestal (8), spring pedestal (8) left side is fixed with the 2nd push rod (64) and the 3rd push rod (65), 2nd push rod (64) is cased with the 1st auxiliary spring (74), 3rd push rod (65) is cased with the 2nd auxiliary spring (75), 2nd push rod (64) is corresponding with the 2nd piston (56), 3rd push rod (65) is corresponding with the 3rd piston (57), 2nd push rod (64) can promote the 2nd piston (56) to be moved to the left, 3rd push rod (65) can promote the 3rd piston (57) to be moved to the left, left brake chamber be arranged over the 1st fluid reservoir (50), 1st fluid reservoir (50) is communicated with left brake chamber by the 1st passage, right brake chamber be arranged over the 2nd fluid reservoir (51), the 2nd fluid reservoir (51) is communicated with right brake chamber by the 2nd passage.
2. a kind of loader brake pump according to claim 1, it is characterized in that: the left end of the 1st back-moving spring (66) is provided with left chassis (68), left liquid outlet channel (6) is provided with left control valve, described left control valve includes left rubber cup (80), left leather cup base (78) and left valve spring (70), left rubber cup (80) is positioned at the left side of left leather cup base (78), the right-hand member of left leather cup base (78) is provided with left valve spring (70), left valve spring (70) and left chassis (68) Elastic Contact; The left end of the 2nd back-moving spring (67) is provided with right chassis (69), right liquid outlet channel (7) is provided with right control valve, described right control valve includes right rubber cup (79), right leather cup base (77) and right valve spring (71), right rubber cup (79) is positioned at the left side of right leather cup base (77), right leather cup base (77) right-hand member is provided with right valve spring (71), right valve spring (71) and right chassis (69) Elastic Contact, left chassis (68) and right chassis (69) are equipped with liquid-through hole (94); Circumferential and the right leather cup base (77) of left leather cup base (78) be circumferentially with the 1st through hole (82), the center of left rubber cup (80) and right rubber cup (79) is designed with the 2nd through hole (81), and the 1st through hole (82) and the 2nd through hole (81) stagger mutually.
3. a kind of loader brake pump according to claim 1 or claim 2, it is characterised in that: described 1st passage is provided with left check valve, and described 2nd passage is provided with right check valve;Left check valve and right check valve are equipped with rubber blanket (84), rubber seat retainer (86) and one-way valve spring (87), rubber blanket (84) is positioned at the top of rubber seat retainer (86), and the lower end of rubber seat retainer (86) is provided with one-way valve spring (87).
4. a kind of loader brake pump according to claim 3, it is characterized in that: the right-hand member of brake pump housing is provided with screwed hole, screwed hole is provided with the adjustment screw (11) of adaptation, adjusts screw (11) and can limit the position that the 1st piston (27) moves right.
5. a kind of loader brake pump according to claim 4, it is characterized in that: the left side of the 2nd piston (56) and the left side of the 3rd piston (57) are designed with the 1st blind hole (91), the right side of the 2nd piston (56) and the right side of the 3rd piston (57) are designed with the 2nd blind hole (92), it is equipped with liquid storage cannelure (93) in the middle part of the periphery of the 2nd piston (56) and in the middle part of the periphery of the 3rd piston (57), is connected by liquid passage (90) excessively between cannelure (93) with the 1st blind hole (91); The right side of the 1st back-moving spring (66) is positioned at the 1st blind hole (91) of the 2nd piston (56), and the right side of the 2nd back-moving spring (67) is positioned at the 1st blind hole (91) of the 3rd piston (57); The left side of the 1st push rod (64) is positioned at the 2nd blind hole (92) of the 2nd piston (56), and the left side of the 2nd push rod (65) is positioned at the 2nd blind hole (92) of the 3rd piston (57); The right circles side face of the 2nd piston (56) and the right circles side face of the 3rd piston (57) are provided with the sealing cannelure in more than 1 road, seal cannelure built with piston packing.
6. a kind of loader brake pump according to claim 5, it is characterised in that: the left side of left brake chamber is arranged over left vent valve (41), and the left side of right brake chamber is arranged over right vent valve (42).
7. a kind of loader brake pump according to claim 6, it is characterised in that: the left side of left brake chamber is provided with left brake switch (54), and the left side of right brake chamber is provided with right brake switch (55); Service brake left chamber (33) is provided with the 1st pneumostome (16), and the right chamber of stopping brake (32) is provided with the 2nd pneumostome (15).
8. a kind of loader brake pump according to claim 1, it is characterized in that: stopping brake QI KOU (30) connects with the parking brake valve air gate (34) of parking brake valve (12), parking brake valve air inlet (35) of parking brake valve (12) connects with the gas receiver gas outlet (36) of gas receiver (14); The Foot braking valve air inlet (37) of Foot braking valve (13) connects with gas receiver gas outlet (36), and the Foot braking valve QI KOU (38) of Foot braking valve (13) connects with service brake QI KOU (31); Left liquid outlet channel (6) connects with the 2nd braking clamp (18), the 4th braking clamp (43), and right liquid outlet channel (7) connects with the 1st braking clamp (17), the 3rd braking clamp (42).
9. a kind of loader brake pump according to claim 2, it is characterized in that: the right side of left leather cup base (78) and the right side of right leather cup base (77) are surrounded with the 1st spring location card article (83), the right side of left chassis (68) and the right side of right chassis (69) are surrounded with the 2nd spring location card article (92); The bottom face of rubber seat retainer (86) is surrounded with the 3rd spring location card article (85).
10. a kind of loader brake pump according to claim 1, it is characterized in that: left liquid outlet channel (6) is provided with a left side and goes out liquid bolt (72), right liquid outlet channel (7) is provided with the right side and goes out liquid bolt (73), a left side goes out the right-hand member of liquid bolt (72) and the right side goes out the right-hand member of liquid bolt (73) and is designed with boss (98), a left side goes out liquid bolt (72) and the right side goes out the liquid outlet channel (76) that liquid bolt (73) is provided with through, left rubber cup (80) or right rubber cup (79) and is buckled on the right-hand member outward flange of boss (98).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610211766.3A CN105673741B (en) | 2016-04-07 | 2016-04-07 | A kind of loading machine brake pump |
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| CN201610211766.3A CN105673741B (en) | 2016-04-07 | 2016-04-07 | A kind of loading machine brake pump |
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| CN105673741A true CN105673741A (en) | 2016-06-15 |
| CN105673741B CN105673741B (en) | 2018-04-20 |
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| CN201610211766.3A Active CN105673741B (en) | 2016-04-07 | 2016-04-07 | A kind of loading machine brake pump |
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| CN106043258A (en) * | 2016-07-26 | 2016-10-26 | 聂瑞波 | Breaker pump and applications thereof on loaders |
| CN107605998A (en) * | 2017-09-14 | 2018-01-19 | 公安县谊睦机械加工有限公司 | A kind of anti-slip brake cylinder of shield machine traction locomotive |
| CN110173525A (en) * | 2019-06-21 | 2019-08-27 | 莱州虎威机械科技有限公司 | Brake pump |
| CN110173524A (en) * | 2019-06-21 | 2019-08-27 | 莱州虎威机械科技有限公司 | A kind of new brake pump |
| CN110173523A (en) * | 2019-06-21 | 2019-08-27 | 莱州虎威机械科技有限公司 | New brake pump |
| CN114194169A (en) * | 2020-09-18 | 2022-03-18 | 芜湖伯特利电子控制系统有限公司 | Electric control braking system capable of independently supplying pressure to wheel ends and control method |
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| CN110173523A (en) * | 2019-06-21 | 2019-08-27 | 莱州虎威机械科技有限公司 | New brake pump |
| CN114194169A (en) * | 2020-09-18 | 2022-03-18 | 芜湖伯特利电子控制系统有限公司 | Electric control braking system capable of independently supplying pressure to wheel ends and control method |
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| CN105673741B (en) | 2018-04-20 |
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Effective date of registration: 20180524 Address after: 261428 front bridge village of tiger head town, Laizhou City, Shandong Patentee after: Laizhou tiger Wei Machinery Technology Co., Ltd. Address before: 261400 301 front bridge village, tiger head Cliff Town, Laizhou City, Yantai, Shandong Patentee before: Nie Ruibo |