CN107161133A - A kind of hand brake valve assembly - Google Patents
A kind of hand brake valve assembly Download PDFInfo
- Publication number
- CN107161133A CN107161133A CN201710388308.1A CN201710388308A CN107161133A CN 107161133 A CN107161133 A CN 107161133A CN 201710388308 A CN201710388308 A CN 201710388308A CN 107161133 A CN107161133 A CN 107161133A
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- China
- Prior art keywords
- valve
- mouthfuls
- mouths
- connect
- main
- 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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- 239000012530 fluid Substances 0.000 claims abstract description 6
- CUZMQPZYCDIHQL-VCTVXEGHSA-L calcium;(2s)-1-[(2s)-3-[(2r)-2-(cyclohexanecarbonylamino)propanoyl]sulfanyl-2-methylpropanoyl]pyrrolidine-2-carboxylate Chemical compound [Ca+2].N([C@H](C)C(=O)SC[C@@H](C)C(=O)N1[C@@H](CCC1)C([O-])=O)C(=O)C1CCCCC1.N([C@H](C)C(=O)SC[C@@H](C)C(=O)N1[C@@H](CCC1)C([O-])=O)C(=O)C1CCCCC1 CUZMQPZYCDIHQL-VCTVXEGHSA-L 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 210000000080 chela (arthropods) Anatomy 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
- B60T15/02—Application and release valves
- B60T15/04—Driver's valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
- B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
- B60T11/28—Valves specially adapted therefor
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The invention discloses a kind of hand brake valve assembly, including magnetic valve, pilot relief valve, main overflow valve, accumulator, main valve, choke valve, check valve, pressure switch, D mouthfuls, P mouthfuls and T mouthfuls；The E mouths of main valve connect P mouthfuls, and the F mouths of main valve connect the entrance of choke valve, and the outlet of choke valve connects the entrance of check valve, and the outlet of check valve connects the K mouths of magnetic valve, the N mouths of pilot relief valve and the entrance of accumulator simultaneously；Another road of F mouths of main valve connects the J mouths of main valve, and another road of the port of export of choke valve connects the H mouths of main valve and the entrance of pilot relief valve simultaneously, and the outlet of pilot relief valve connects T mouthfuls；The L mouths of magnetic valve connect D mouthfuls, and the M mouths of magnetic valve connect T mouthfuls, and another road of one-way valved outlet connects the hydraulic fluid port end of pressure switch；The x-terminal and y terminals of magnetic valve connect external control signal, and the f terminals and h terminals of pressure switch connect outside controlled signal.The present invention can configure dry type bridge, can also configure wet type bridge independently of service braking system.
Description
Technical field
The present invention relates to the hydraulic unit on a kind of loading machine, specifically a kind of hand brake valve assembly.
Background technology
When loading machine complete machine configures dry type bridge, service brake scheme is air-operated hydraulic brake, and hand braking scheme uses gas circuit control
Flexible axle stroke processed, the output end to gearbox carries out drum brake, and hand braking gas circuit and foot brake gas circuit be not independent；And work as
The non-drum brake of output end of gearbox, but during the braking of hydraulic control caliper disc, flexible axle braking just can not be installed.Hydraulic control caliper disc hand
Braking：Under electric signaling device effect, certain pressure oil is inputted, hand brake device can be just released, when power is off or pressed
During lower parking switch, pressure oil is connected with fuel tank, and hand brake device is under the pressure of the spring, rapid to implement pincers disk braking.Entirely
The gearbox of hydraulic pressure wet braking can only configure wet type bridge, and gearbox is electrichydraulic control pincers disk braking, but its electrichydraulic control
The valve block of system is very complicated, and carries out topping up to multiple accumulators simultaneously, is an integrated form replenishing valve, and cost is high, simultaneously
Can not configure dry type bridge, i.e. service brake and it is hand braking can not be independent, be the braking scheme of integrated form.
The content of the invention
In view of the above-mentioned problems of the prior art, the present invention provides a kind of hand brake valve assembly, independently of service brake
System, can configure dry type bridge, can also configure wet type bridge, meet the hand braking system of electrichydraulic control caliper disc, and principle is simple
And cost is low, reliable operation.
To achieve these goals, the technical solution adopted by the present invention is：A kind of hand brake valve assembly, including magnetic valve,
Pilot relief valve, main overflow valve, accumulator, main valve, choke valve, check valve, pressure switch, D mouthfuls, P mouthfuls and T mouthfuls；The master
The E mouths of valve connect P mouthfuls, and the F mouths of main valve connect the entrance of choke valve, and the outlet of choke valve connects the entrance of check valve, the outlet of check valve
Connect the K mouths of magnetic valve, the N mouths of pilot relief valve and the entrance of accumulator simultaneously；Another road of F mouths of the main valve meets the J of main valve
Mouthful, another road of the port of export of choke valve connects the H mouths of main valve and the entrance of pilot relief valve simultaneously, and the outlet of pilot relief valve meets T
Mouthful；The L mouths of the magnetic valve connect D mouthfuls, and the M mouths of magnetic valve connect T mouthfuls, and another road in outlet of check valve connects the oil of pressure switch
Mouth end；The x-terminal and y terminals of magnetic valve connect external control signal, and the f terminals and h terminals of pressure switch connect outside and controlled
Signal.
Of the invention further, the G mouths of the main valve connect T mouthfuls；Another road of E mouths of the main valve meets entering for main overflow valve
Mouthful, the outlet of main overflow valve connects T mouthfuls；The hydraulic fluid port end of the D mouthfuls of catcher brake apparatus.
Of the invention further, described P mouthfuls connects pressure oil input.
Of the invention further, described main valve is two-bit triplet ratio pilot operated valve device.
Of the invention further, described magnetic valve is two-bit triplet magnetic valve.
Of the invention further, described external control signal is parking switch circuit or power cut circuit.
Of the invention further, described outside controlled signal is low-voltage alarm circuit.
The present invention carries out topping up by main valve to accumulator, and the pressure oil of solenoid valve control accumulator enters D mouthfuls, D mouthfuls
Be responsible for providing pressure oil to hand brake device, control the commutation of magnetic valve with electric signal, and electric signal by parking switch Lai
Meet.And met using pilot relief valve it is preferential topping up is carried out to accumulator, when topping up is finished, then oil return.When accumulator system
When dynamic pressure is too low, pressure switch just provides control signal to outside, can meet low pressure alarming function.Meanwhile, when hand braking
When carrying out signal, just complete machine implements hand braking, to protect gearbox.It is an advantage of the invention that：
1. cost is low.Whole hand-made autocontrol system and common gas circuit hand brake system, only extra increase hydraulic valve, accumulator and
The cost of electrical part, the costs hundreds thousand of with loading machine are compared, increased cost very little.
2. the principle of whole hand brake valve assembly is simple.In the brakes of common loading machine, increase seldom part, because
This principle is readily appreciated that failure is easier to judge, attendant's maintenance conditions are convenient, and maintenance cost is relatively low, once go out
Existing failure, can quickly be excluded.
3. reliability is further improved.Because the system principle is simple, number of elements is less, therefore the reliability of system is entered
One step is improved.
4. more preferably, adaptability is more extensive for the flexibility of complete machine.Using the complete machine of the hand brake valve assembly of the present invention, both may be used
To configure dry type bridge, wet type bridge can also be configured, because hand brake system is independently of service braking system, therefore adaptability is wider
It is general.
5. easily realize the supply of material.The manufacturing technology of the associated parts such as magnetic valve, pressure switch and overflow valve is ripe, processing side
Just, supplier is easily supporting.
6. the easily generalized application of the system.Whole system is because basic electromagnetic valve is easy to process, system additionally increases
Cost very little, reliability is higher than common in-vehicle, and failure is easily determined, the sensitivity of system is very high, and better adaptability so that
The system is easily expanded to be used.
Brief description of the drawings
Fig. 1 is control system schematic diagram of the present invention；
Fig. 2 is the fundamental diagram after magnetic valve of the present invention is powered off；
In figure：1st, magnetic valve；2nd, pilot relief valve；3rd, main overflow valve；4th, accumulator；5th, main valve；6th, choke valve；7th, check valve；
8th, pressure switch.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in figure 1, a kind of hand brake valve assembly of the invention, including magnetic valve 1, pilot relief valve 2, main overflow valve 3, storage
Can device 4, main valve 5, choke valve 6, check valve 7, pressure switch 8, D mouthfuls, P mouthfuls and T mouthfuls；The E mouths of main valve 5 connect P mouthfuls, the F of main valve 5
Mouth connects the entrance of choke valve 6, and the outlet of choke valve 6 connects the entrance of check valve 7, and the outlet of check valve 7 meets the K of magnetic valve 1 simultaneously
Mouth, the N mouths and the entrance of accumulator 4 of pilot relief valve 2；Another road of F mouths of main valve 5 connects the J mouths of main valve 5, the outlet of choke valve 6
Another road is held while connecing the H mouths of main valve 5 and the entrance of pilot relief valve 2, the outlet of pilot relief valve 2 connects T mouthfuls；The L of magnetic valve 1
Mouth connects D mouthfuls, and the M mouths of magnetic valve 1 connect T mouthfuls, and another road in outlet of check valve 7 connects the hydraulic fluid port end of pressure switch 8；Magnetic valve 1
X-terminal and y terminals connect external control signal, the f terminals and h terminals of pressure switch 8 connect outside controlled signal.Its China and foreign countries
Portion's control signal can be parking switch circuit or power cut circuit, and outside controlled signal is low-voltage alarm circuit.P mouthfuls
Connect pressure oil input, the hydraulic fluid port end of D mouthfuls of catcher brake apparatus.
On the basis of the above, the G mouths of main valve 5 of the present invention connect T mouthfuls；Another road of E mouths of main valve 5 connects the entrance of main overflow valve 3,
The outlet of main overflow valve 3 connects T mouthfuls.Main valve 5 of the present invention is two-bit triplet ratio pilot operated valve device, and magnetic valve 1 is two-bit triplet magnetic valve.
When complete machine normally travel, pressure oil through P mouthfuls enter main valve 5 E mouths, F mouths, choke valve 6 through main valve 5, unidirectionally
Valve 7, the K mouths of magnetic valve 1, L mouthfuls, the D mouths through magnetic valve 1 to hand brake device are so as to release the hand braking of complete machine.Now, D mouthfuls
Certain pressure is maintained in the presence of accumulator 4, therefore, unnecessary pressure oil is by the K mouthfuls of masters through N mouthfuls of control pilot relief valves 2
Valve element return, so that H mouthfuls are connected with T mouthfuls, now H mouthfuls of pressure reductions, J mouthfuls of pressure are more than H mouthfuls of pressure and spring pressure sum, from
And the valve element of main valve 5 is moved to left to E mouthfuls and G mouthfuls of connections, pressure oil is through E mouthfuls, G mouthfuls, T mouthfuls of progress oil returns.And D mouthfuls still maintain accumulator 4
Pressure, complete machine is hand braking to be continuously in releasing state.
It is electric when the x-terminal and y terminal receptions of magnetic valve 1 are to when coming from parking switch signal or power cut signal
Magnet valve 1 is powered off, in the presence of back-moving spring, the valve core reset of magnetic valve 1, i.e., K mouthfuls disconnect with L mouthfuls in oil circuit, and L mouthfuls and M mouthfuls connect
Logical, D mouthfuls of pressure oil is through L mouthfuls and M mouthfuls to T mouthfuls progress oil returns, so that hand brake device implements braking.By the pressure of P mouthfuls of entrance
Oil is still through T mouthfuls of progress oil returns.The fundamental diagram that hand brake device implements braking is as shown in Figure 2.
When the pressure of accumulator 4 is less than setting, K mouthfuls of pressure reductions, the back-moving spring of pressure switch 8 overcomes oil pressure
F ends are made to be terminated with h logical, now low-voltage alarm circuit is connected, and just starts alarm, points out the hand braking hypotony of complete machine.Now by
It is isobaric in K mouthfuls and N mouthful, therefore the valve element of pilot relief valve 2 moves up under the action of the spring, now, H mouthful are disconnected with T mouthfuls, and H mouthfuls are pressed
Power is gradually risen, therefore the valve element of main valve 5 is gradually moved to right, until E mouthfuls are fully disconnected with G mouthfuls, E mouthfuls are fully switched on F mouthfuls, because
This, pressure oil carries out repairing supercharging through E mouthfuls, F mouthfuls, choke valve 6, check valve 7 to accumulator 4, until N mouthfuls of pressure make hydraulic control overflow
The valve core reset of valve 2, now, K mouthfuls of pressure increase to the f ends of pressure switch 8 and h ends disconnect, and just stop low pressure alarming, together
When, H mouthfuls reclose with T mouthfuls, and J mouthfuls of pressure are more than H mouthfuls of pressure and spring pressure sum, and the valve element of main valve 5 is moved to left to E mouthfuls and F mouthfuls
It is fully disconnected, E mouthfuls fully switched on G mouthfuls, working connection then passes through T mouthfuls of progress oil returns.
When the set pressure of E mouthfuls of pressure rises to main overflow valve 3, main overflow valve 3 is opened, now, E mouthfuls, T mouthfuls of connections,
Direct oil return.
The System Priority ensures that the pressure of accumulator 4 meets brake request, and when being unsatisfactory for, main valve is preferentially to accumulator 4
Topping up is carried out until meeting authorized pressure, then oil return again, i.e., hand braking preferential principle.
Certainly, above-described embodiment is only the preferred scheme of the present invention, is specifically not limited thereto, on this basis can basis
It is actually needed and makes with targetedly adjusting, so as to obtain different embodiments.Because mode in the cards is more, this
In just no longer illustrate one by one.
Claims (7)
1. a kind of hand brake valve assembly, it is characterised in that including magnetic valve（1）, pilot relief valve（2）, main overflow valve（3）, store
Can device（4）, main valve（5）, choke valve（6）, check valve（7）, pressure switch（8）, D mouthfuls, P mouthfuls and T mouthfuls；
The main valve（5）E mouths connect P mouthfuls, main valve（5）F mouths connect choke valve（6）Entrance, choke valve（6）Outlet order to
Valve（7）Entrance, check valve（7）Outlet simultaneously connect magnetic valve（1）K mouths, pilot relief valve（2）N mouths and accumulator（4）
Entrance；The main valve（5）Another road of F mouths connect main valve（5）J mouths, choke valve（6）Another road of the port of export simultaneously connect main valve
（5）H mouths and pilot relief valve（2）Entrance, pilot relief valve（2）Outlet connect T mouthfuls；The magnetic valve（1）L mouths meet D
Mouthful, magnetic valve（1）M mouths connect T mouthfuls, check valve（7）Another road in outlet connect pressure switch（8）Hydraulic fluid port end；
Magnetic valve（1）X-terminal and y terminals connect external control signal, pressure switch（8）F terminals and h terminals connect outside quilt
Control signal.
2. a kind of hand brake valve assembly according to claim 1, it is characterised in that the main valve（5）G mouths connect T mouthfuls；Institute
State main valve（5）Another road of E mouths connect main overflow valve（3）Entrance, main overflow valve（3）Outlet connect T mouthfuls；The D mouthfuls of catcher system
The hydraulic fluid port end of dynamic device.
3. a kind of hand brake valve assembly according to claim 1, it is characterised in that described P mouthfuls connects pressure oil input.
4. a kind of hand brake valve assembly according to claim 1, it is characterised in that described main valve（5）For two-bit triplet
Ratio pilot operated valve device.
5. a kind of hand brake valve assembly according to claim 1, it is characterised in that described magnetic valve（1）For two three
Three-way electromagnetic valve.
6. a kind of hand brake valve assembly according to claim 1, it is characterised in that described external control signal is hand-made
Dynamic on-off circuit or power cut circuit.
7. a kind of hand brake valve assembly according to claim 1, it is characterised in that described outside controlled signal is low
Press warning circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710388308.1A CN107161133B (en) | 2017-05-27 | 2017-05-27 | Hand brake valve assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710388308.1A CN107161133B (en) | 2017-05-27 | 2017-05-27 | Hand brake valve assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107161133A true CN107161133A (en) | 2017-09-15 |
| CN107161133B CN107161133B (en) | 2024-01-23 |
Family
ID=59821420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710388308.1A Active CN107161133B (en) | 2017-05-27 | 2017-05-27 | Hand brake valve assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107161133B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19514603A1 (en) * | 1995-04-20 | 1996-10-24 | Daimler Benz Ag | Air brake system for a commercial vehicle |
| CN201991861U (en) * | 2011-04-13 | 2011-09-28 | 安徽合力股份有限公司 | Integrated valve block for heavy forklift hydraulic system |
| CN102602385A (en) * | 2012-03-27 | 2012-07-25 | 三一集团有限公司 | Parking braking system and engineering machinery |
| CN102756791A (en) * | 2012-07-11 | 2012-10-31 | 武汉船用机械有限责任公司 | Hydraulic anchor machine braking system with two-gear speed adjustment |
| CN206749783U (en) * | 2017-05-27 | 2017-12-15 | 徐工集团工程机械股份有限公司科技分公司 | Hand brake valve assembly |
-
2017
- 2017-05-27 CN CN201710388308.1A patent/CN107161133B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19514603A1 (en) * | 1995-04-20 | 1996-10-24 | Daimler Benz Ag | Air brake system for a commercial vehicle |
| CN201991861U (en) * | 2011-04-13 | 2011-09-28 | 安徽合力股份有限公司 | Integrated valve block for heavy forklift hydraulic system |
| CN102602385A (en) * | 2012-03-27 | 2012-07-25 | 三一集团有限公司 | Parking braking system and engineering machinery |
| CN102756791A (en) * | 2012-07-11 | 2012-10-31 | 武汉船用机械有限责任公司 | Hydraulic anchor machine braking system with two-gear speed adjustment |
| CN206749783U (en) * | 2017-05-27 | 2017-12-15 | 徐工集团工程机械股份有限公司科技分公司 | Hand brake valve assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107161133B (en) | 2024-01-23 |
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