CN201810600U - Zero leakage unloading valve bank - Google Patents
Zero leakage unloading valve bank Download PDFInfo
- Publication number
- CN201810600U CN201810600U CN2010205406945U CN201020540694U CN201810600U CN 201810600 U CN201810600 U CN 201810600U CN 2010205406945 U CN2010205406945 U CN 2010205406945U CN 201020540694 U CN201020540694 U CN 201020540694U CN 201810600 U CN201810600 U CN 201810600U
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- China
- Prior art keywords
- valve body
- load
- oil
- valve
- unloading
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- Expired - Lifetime
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Abstract
The utility model relates to a zero leakage unloading valve bank arranged on an upper hydraulic system of an automobile crane for use. An unloading valve body is provided with two oil inlets (Y1 and Y2), and the two oil inlets (Y1 and Y2) are respectively connected with two one-way valves positioned on the unloading valve body and are connected with remote control ports of two working oil pump safety valves of the upper hydraulic system; the unloading valve body is also provided with an unloading oil port (L); oil outlets (P01 and P02) of the two one-way valves are connected with an inflow channel (P0) positioned on the unloading valve body; the inflow channel (P0) is connected with an oil inlet (L01) of an electromagnetic ball valve; an oil outlet (L02) of the electromagnetic ball valve is connected with a backflow channel (L0) of the unloading valve body; and the backflow channel (L0) is connected with the unloading oil port (L). The one-way valves and the electromagnetic ball valve are all arranged near corresponding oil ports, thus the utility model has more compact structure and small size, greatly shortens the lengths of the inflow channel (P0) and the backflow channel (L0), reduces the energy consumption and is easy to maintain and manufacture; in addition, the two one-way valves prevent the influence of the mutual interference of pressure signals of the two working oil pumps, and when the upper hydraulic system of the automobile crane normally works, the electromagnetic ball valve achieves zero leakage, therefore the work efficiency of the upper hydraulic system of the automobile crane is greatly enhanced.
Description
Technical field
The utility model relates to a kind of unloading valve group, and particularly a kind of being widely used in carried out the zero leakage unloading valve group that safety protection is used to system for hydraulic system of truck crane each actuator of getting on the bus.
Background technique
During crane job; be about to exceed the operating mode of its permission when hoist; under the situation that might meet accident; make the unloading valve action by electrical signal; link up the relief valve remote control mouth of its control; make the oil hydraulic pump off-load, no longer continuing provides pressure oil-source to the dangerous moving direction of hydraulic actuator, the effect of playing protection equipment and reminding operator to note.
At present, the multi-way valve control system of getting on the bus domestic a lot of hydraulic mobile crane adopts more is formed the control valve group with the control valve of each actuator's safety protection by pipeline connecting mode, therefore cause control system bulky, installation and maintenance difficulty, the defective that automaticity is low; Though on domestic minority hydraulic mobile crane and the external hydraulic mobile crane, also adopt integrated mode that each control valve is combined, complex structure, bulky, cost an arm and a leg and can not reach zero leakage, cause hoist work efficient to reduce.
Number of patent application 200610015645.8 " is used to protect the unloading valve component structure of compressor ", and used unloading valve is the mechanical compression unloading valve, be installed in dispense with outer connecting power between the height pressure pipe, but it is only applicable to protect the compressor of air conditioner.
Summary of the invention
Technical problem to be solved in the utility model is: a kind of zero leakage unloading valve group is provided, it is simple in structure, volume is little, and the automaticity height, and used Solenoid ball valve can reach zero leakage, safe and reliable, promoted the working efficiency of vehicle hydraulic system on the truck crane greatly.
The technical scheme in the invention for solving the above technical problem is: zero leakage unloading valve group, comprise the one-way valve that is installed on the off-load valve body, and also comprise the Solenoid ball valve that is fixedly connected on the off-load valve body, two filler opening Y are arranged on the described off-load valve body
1, Y
2, be connected with two one-way valves on the off-load valve body respectively, and be connected with the remote control mouth of two working oil pump relief valves of hydraulic system, also have off-load hydraulic fluid port L, the oil outlet P on two one-way valves on the described off-load valve body
01, P
02With the influent stream road P on the off-load valve body
0Connect described influent stream road P
0With the filler opening L on the Solenoid ball valve
01Connect the oil outlet L on the Solenoid ball valve
02With the backflow road L on the off-load valve body
0Connect backflow road L
0L is connected with the off-load hydraulic fluid port.
Compared with prior art, advantage of the present utility model is: this unloading valve group has only adopted the structure of two identical one-way valves and Solenoid ball valve, and two one-way valves only enter Solenoid ball valve with an influent stream road on the off-load valve body, its used part height integrates, part is few, simple in structure, easily assembling, and each one-way valve and Solenoid ball valve all are arranged near the corresponding separately hydraulic fluid port, make its more compact structure, volume little, processing cost is low, and shortens and reduced the length of runner greatly, reduced energy consumption, the maintenance of being more convenient for is made.Again because of having adopted the structure of two one-way valves, two work oil pumps have been isolated, also prevented simultaneously the influence of two working oil pumping pressure signal phases mutual interference, and automaticity height, under vehicle hydraulic system normal operation on the truck crane, Solenoid ball valve can reach zero leakage, has therefore promoted the working efficiency of vehicle hydraulic system on the truck crane greatly.
Description of drawings
Fig. 1, profile schematic representation of the present utility model.
Fig. 2, hydraulic schematic diagram of the present utility model.
The A-A view of Fig. 3, Fig. 1.
The B-B view of Fig. 4, Fig. 1 (being the Solenoid ball valve off-position).
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is further described.
Solenoid ball valve DHF1, by the push rod I9 and the steel ball I7 that are equipped with successively in the horizontal ladder hole on the ball valve body 5 on the steel ball III13, the push rod II12 that usher to seat, steel ball II11, the unidirectional valve seat 8, and be fixed on the sidewall of ball valve body 5 with the screw thread of spring seat 6 usefulness on it of band spring, seat 15 is fixed on the ball valve body 5 with screw with corresponding another sidewall of spring seat, be screwed the lower end of lever 14 in present 15, lever 14 upper ends cooperate with electromagnet 10 on the Solenoid ball valve 1.
The oil outlet L that has the mutually perpendicular mouth of pipe to constitute at unidirectional valve seat 8 lower opening places
02, and oil outlet L
02Also with off-load valve body 2 on backflow road L
0Connect, and backflow road L
0Be connected with off-load hydraulic fluid port L perpendicular on off-load valve body one sidewall, and off-load hydraulic fluid port L is connected (figure does not draw) with fuel tank, Solenoid ball valve 1 is screwed and is board-like connection on off-load valve body 2, as shown in Figure 4.
Corresponding two filler opening Y are arranged on the two corresponding sidewalls of off-load valve body 2
1, Y
2, also have and filler opening Y
1, Y
2Communicate two one-way valve DF
14, DF
24 ', two one-way valves adopt the thread cartridge formula to be installed on the off-load valve body, and two one-way valves 4,4 ' on the corresponding sidewall of off-load valve body also are enclosed in the off-load valve body 2 two filler opening Y with plug screw 3,16 with it
1, Y
2The externally remote control hydraulic fluid port of two working oil pump relief valves of difference connected system, and filler opening Y
1Internal corresponding one-way valve DF
1Front end, filler opening Y
2Internal corresponding one-way valve DF
2Front end, the oil outlet P of two one-way valves
01, P
02Communicate and by the influent stream road P on the off-load valve body 2
0Enter the filler opening L of Solenoid ball valve 1
01After, the oil outlet L from the Solenoid ball valve 1
02Outflow is through backflow road L
0Arrive off-load hydraulic fluid port L again, off-load hydraulic fluid port L is connected with fuel tank, as shown in Figure 3, Figure 4.
The electrical signal of Solenoid ball valve 1 is controlled by computer program, Solenoid ball valve 1 must not the electricity operating mode under, as filler opening Y
1Build-up pressure, pressure oil liquid is opened the one-way valve spool through one-way valve 4, enters one-way valve 4, because of the oil outlet of two one-way valves communicates, and can react on one-way valve 4 ', close the spool of one-way valve and seal one-way valve 4 ', prevent filler opening Y
1And Y
2Produce to disturb, pressure oil liquid enters Solenoid ball valve 1 simultaneously, acts on the steel ball I7 on the Solenoid ball valve 1, at this moment by the block electromagnetic ball valve sealing one-way valve 4 of steel ball, makes pressure oil liquid not enter the off-load runner by Solenoid ball valve, guarantees that system works normally and efficiently.
As filler opening Y
2Build-up pressure, pressure oil liquid through one-way valve 4 ', open one-way valve 4 ' spool enter one-way valve 4 ', and react on one-way valve 4, close one-way valve 4 spools and seal one-way valve 4, prevent filler opening Y
1And Y
2Produce to disturb, pressure oil liquid enters Solenoid ball valve 1 simultaneously, acts on Solenoid ball valve steel ball I7, by the block electromagnetic ball valve sealing one-way valve 4 of steel ball ', make pressure oil liquid not enter the off-load runner by Solenoid ball valve, guarantee that system works normally and efficiently.
As filler opening Y
1And Y
2The while build-up pressure, the fluid that pressure is high enters its corresponding one-way valve, and react on the nonreturn valve core of the low fluid correspondence of pressure, sealing low pressure fluid enters one-way valve, prevents that two pressure oil liquids from disturbing, and the high fluid of pressure enters Solenoid ball valve 1 simultaneously, act on the steel ball I 7 of Solenoid ball valve 1, the high one-way valve of block electromagnetic ball valve confining pressure by steel ball makes pressure oil liquid not enter the off-load runner by Solenoid ball valve, guarantees that system works normally and efficiently.
When dangerous operating mode such as only surplus last 3 circles of hoisting mechanism pulleying, hoisting mechanism roller steel wire rope and overload occurring as each actuator, the conducting of computer program identification signal, and Solenoid ball valve 1 is got, electromagnet 10 actions promote lever 14 and steel ball III13 that match with it, that be connected, push rod II12, steel ball II11 and push rod I9 move, at this moment back down steel ball I7 by push rod I9 it is moved right, and open filler opening L
01, open the safety valve remote control mouth of two oil pumps of work, work fluid enters in the valve by the Solenoid ball valve of opening 1, links up off-load hydraulic fluid port L, and work fluid that will be by solenoid valve 1 is through oil outlet L
02Backflow road L on the off-load valve body
0, flow to off-load hydraulic fluid port L, and straight-through again fuel tank, at this moment go up each actuator of vehicle hydraulic system and stop action, finish the safety protection effect.When system works once more, force Solenoid ball valve 1 outage, system enters proper functioning again.
Claims (4)
1. a zero leakage unloading valve group comprises the one-way valve that is installed on the off-load valve body (2), it is characterized in that also comprising the Solenoid ball valve (1) that is fixedly connected on the off-load valve body (2), and two filler opening (Y are arranged on the described off-load valve body (2)
1, Y
2), being connected with two one-way valves (4,4 ') on the off-load valve body respectively, and being connected with the remote control mouth of two working oil pump relief valves of hydraulic system, described off-load valve body (2) is gone up also has off-load hydraulic fluid port (L), the oil outlet (P on two one-way valves
01, P
02) with the off-load valve body on influent stream road (P
0) connect described influent stream road (P
0) with Solenoid ball valve (1) on filler opening (L
01) connect the oil outlet (L on the Solenoid ball valve (1)
02) with off-load valve body (2) on backflow road (L
0) connect backflow road (L
0) be connected with off-load hydraulic fluid port (L).
2. zero leakage unloading valve group according to claim 1 is characterized in that described off-load hydraulic fluid port (L) is connected with fuel tank.
3. zero leakage unloading valve group according to claim 1 is characterized in that described Solenoid ball valve (1) is screwed on off-load valve body (2).
4. zero leakage unloading valve group according to claim 1 is characterized in that described two one-way valves (4,4 ') are plugged on the off-load valve body (2) with screw thread, also uses plug screw (3,16) to be enclosed in the off-load valve body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205406945U CN201810600U (en) | 2010-09-20 | 2010-09-20 | Zero leakage unloading valve bank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205406945U CN201810600U (en) | 2010-09-20 | 2010-09-20 | Zero leakage unloading valve bank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201810600U true CN201810600U (en) | 2011-04-27 |
Family
ID=43893542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205406945U Expired - Lifetime CN201810600U (en) | 2010-09-20 | 2010-09-20 | Zero leakage unloading valve bank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201810600U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936315A (en) * | 2010-09-20 | 2011-01-05 | 竺浩君 | Zero-leakage unloading valve bank |
| CN103644336A (en) * | 2013-12-28 | 2014-03-19 | 太重集团榆次液压工业有限公司 | Pilot type active belt position monitoring safety valve |
-
2010
- 2010-09-20 CN CN2010205406945U patent/CN201810600U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936315A (en) * | 2010-09-20 | 2011-01-05 | 竺浩君 | Zero-leakage unloading valve bank |
| CN101936315B (en) * | 2010-09-20 | 2013-03-13 | 竺浩君 | Zero-leakage unloading valve bank |
| CN103644336A (en) * | 2013-12-28 | 2014-03-19 | 太重集团榆次液压工业有限公司 | Pilot type active belt position monitoring safety valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110427 Effective date of abandoning: 20130313 |
|
| RGAV | Abandon patent right to avoid regrant |