CN206694340U - It is a kind of to prevent descending from shaking and turning to the lifting working platform Ye Qu mechanisms being emptied - Google Patents
It is a kind of to prevent descending from shaking and turning to the lifting working platform Ye Qu mechanisms being emptied Download PDFInfo
- Publication number
- CN206694340U CN206694340U CN201720366911.5U CN201720366911U CN206694340U CN 206694340 U CN206694340 U CN 206694340U CN 201720366911 U CN201720366911 U CN 201720366911U CN 206694340 U CN206694340 U CN 206694340U
- Authority
- CN
- China
- Prior art keywords
- valve
- oil
- oil outlet
- oil inlet
- way solenoid
- 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.)
- Withdrawn - After Issue
Links
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
It the utility model is related to a kind of lifting working platform Ye Qu mechanisms for preventing that descending from being shaken and steering is emptied.This prevents descending from shaking and turning to the lifting working platform Ye Qu mechanisms being emptied, oil pump including fuel tank, connection fuel tank, first overflow valve is connected with the oil inlet end of a two-position four-way solenoid valve after being connected with oil pump, another oil outlet end of two-position four-way solenoid valve connects the second overflow valve, forward-reverse reversal valve is connected respectively two oil inlet ends of a balanced valve, two oil outlet ends of balanced valve are connected to running motor, and a stop valve is connected between two oil outlet ends of balanced valve.This is designed to effectively prevent oil pump feed deficiency in traveling, so as to effectively avoid fuel feeding from saturation occur, running motor inlet pressure establishes the phenomenon that insufficient, brake disc is in braking state, so as to efficiently avoid the generation of descending jitter phenomenon, when walking turns to lifting working platform at a high speed, it can effectively avoid turning to the generation of emptying phenomenon.
Description
Technical field：
It the utility model is related to a kind of lifting working platform Ye Qu mechanisms for preventing that descending from being shaken and steering is emptied.
Background technology：
In the construction of engineering, lifting working platform is often used, hydraulic lifting workbench of the prior art
Hydraulic system is as shown in Fig. 2 there is following three shortcomings in the operation of work, and 1, lifting working platform (liquid drive) descending
When, it may appear that the phenomenon that running motor is above emptied, cause the insufficient pressure for supplying brake disc, lifting work occurs in brake disc locking
Make platform parking phenomenon, establish before running motor after pressure and can walk, thus occur that the one of self-powered platform walks one and stop
Descending jitter phenomenon, the pressure test curve of wherein pressure test port is as shown in Figure 3；2nd, lifting working platform turns to walking
When, for pressure-gradient control valve preferentially to supply flow rate is turned to, turning to the flow of small chamber does not have direct oil return box, but has arrived running motor, special
It is not to redirect to bottom when walking, has been superimposed the pressure of overflow valve, therefore walking does not save；3rd, when lifting working platform high speed
When walking turns to, when oil also passes through second running motor and turned in outer ring, it may appear that fuel feeding not foot phenomenon, easily go out to turn now to
It is emptied.
Utility model content：
The utility model provides a kind of lifting working platform Ye Qu mechanisms for preventing that descending from being shaken and steering is emptied, the knot
Structure is reasonable in design, novel, can effectively prevent oil pump feed deficiency in traveling, so as to effectively avoid fuel feeding from saturation occur, OK
Walk motor inlet pressure and establish the phenomenon that insufficient, brake disc is in braking state, so as to efficiently avoid descending jitter phenomenon
Generation, turn to walk when, being superimposed for steering pressure and overflow valve pressure can be effectively prevented from, gone so as to ensure that to turn to
The energy saving walked, when walking turns to lifting working platform at a high speed, it can effectively avoid turning to the generation of emptying phenomenon, solve
Problems of the prior art.
The utility model is that technical scheme is used by solving above-mentioned technical problem：
A kind of lifting working platform Ye Qu mechanisms for preventing that descending from being shaken and steering is emptied, including fuel tank, connection fuel tank
Oil pump, a filter is connected with the oil revolving end of fuel tank, the other end of filter is connected with the first overflow valve, first overflow
The other end of valve is connected with the oil outlet end of oil pump, and first overflow valve is connected with a two-position four-way electromagnetism after being connected with oil pump
The oil inlet end of valve, an oil outlet end of two-position four-way solenoid valve connect the oil inlet end of a pressure-gradient control valve, two-position four-way solenoid valve it is another
Oil outlet end connect the second overflow valve, the other end of the second overflow valve be connected with another oil inlet end of two-position four-way solenoid valve afterwards and mistake
Pipeline between filter and the first overflow valve is connected, and No. 1 oil outlet end of pressure-gradient control valve connects No. 1 oil inlet end of a switching valve and preferential
No. 3 oil inlet ends of valve, No. 2 oil inlet ends and the 3rd overflow valve of No. 3 oil outlet ends one switching valve of connection of pressure-gradient control valve, the 2 of switching valve
Number pipeline of oil inlet end, the other end of the 3rd overflow valve between filter and the first overflow valve is connected, and No. 2 of pressure-gradient control valve go out
Oily end connects No. 1 oil inlet end and a choke valve of a forward-reverse reversal valve, and No. 2 oil inlet ends connection one of switching valve is positive unidirectional
It is connected after valve with No. 2 oil inlet ends of forward-reverse reversal valve, two oil outlet ends of forward-reverse reversal valve are connected respectively
Two oil inlet ends of one balanced valve, two oil outlet ends of balanced valve are connected to running motor, and two in balanced valve are fuel-displaced
A stop valve is connected between end, is connected with a fast reversal valve of height between two running motors, the one of high low speed switching valve
Oil outlet end is also associated with a reverse check valve, and the other end of reverse check valve is connected with No. 2 oil inlet ends of forward-reverse reversal valve；
The other end of the choke valve connects brake disc by a brake relief valve.
The brake relief valve includes the two-position two-way solenoid valve of connection choke valve, in the oil inlet end of two-position two-way solenoid valve
A certain amount of pump is connected between oil outlet end, a check valve is connected between two-position two-way solenoid valve oil outlet end and constant displacement pump,
A check valve is connected between constant displacement pump and two-position two-way solenoid valve oil inlet end.
One oil outlet end of the switching valve connects the oil inlet end of a hydraulic cylinder, another oil outlet end connection liquid cylinder pressure of switching valve
Oil outlet end.
A hydraulic test mouth is connected between choke valve and two-position two-way solenoid valve.
The utility model uses said structure, and this is reasonable in design, novel, can effectively prevent oil pump feed in traveling
Deficiency, so as to effectively avoid fuel feeding from saturation occur, running motor inlet pressure establishes deficiency, brake disc is in braking state
Phenomenon, so as to efficiently avoid the generation of descending jitter phenomenon, turn to walk when, can be effectively prevented from steering pressure with
The superposition of overflow valve pressure,, can when walking turns to lifting working platform at a high speed so as to ensure that the energy saving for turning to walking
The effective generation for avoiding turning to emptying phenomenon, is used suitable for being widely popularized.
Brief description of the drawings：
Fig. 1 is hydraulic principle figure of the present utility model.
Fig. 2 is hydraulic principle figure of the prior art.
Fig. 3 is the pressure test curve of hydraulic test mouth in the prior art.
Fig. 4 is the pressure test curve of the utility model hydraulic test mouth.
In figure, 1.1 fuel tanks, 1.2 oil pumps, 1.3 filters, 1.4 first overflow valves, 1.5 two-position four-way solenoid valves, 1.6 is excellent
First valve, 1.7 second overflow valves, 1.8 switching valves, 1.9 the 3rd overflow valves, 2.0 forward-reverse reversal valves, 2.1 choke valves, 2.2 just
To check valve, 2.3 balanced valves, 2.4 running motors, 2.5 stop valves, 2.6 high low speed switching valves, 2.7 reverse check valves, 2.8 stop
Hull, 2.9 two-position two-way solenoid valves, 3.0 constant displacement pumps, 3.1 check valves, 3.2 hydraulic cylinders, 3.3 hydraulic test mouths.
Embodiment：
For the technical characterstic for illustrating this programme can be understood, below by embodiment, and its accompanying drawing is combined, to this reality
It is described in detail with new.
It is a kind of to prevent descending from shaking and turning to the lifting working platform Ye Qu mechanisms being emptied, including oil as shown in Fig. 1,4
Case 1.1, the oil pump 1.2 for connecting fuel tank 1.1, a filter 1.3 is connected with the oil revolving end of fuel tank 1.1, filter 1.3 it is another
End is connected with the first overflow valve 1.4, and the other end of first overflow valve 1.4 is connected with the oil outlet end of oil pump 1.2, and described the
One overflow valve 1.4 is connected with the oil inlet end of a two-position four-way solenoid valve 1.5, two-position four-way solenoid valve 1.5 after being connected with oil pump 1.2
An oil outlet end connect the oil inlet end of a pressure-gradient control valve 1.6, another oil outlet end of two-position four-way solenoid valve 1.5 connects the second overflow valve
1.7, after the other end of the second overflow valve 1.7 is connected with another oil inlet end of two-position four-way solenoid valve 1.5 and filter 1.3 and the
Pipeline between one overflow valve 1.4 is connected, and No. 1 oil outlet end of pressure-gradient control valve 1.6 connects No. 1 oil inlet end of a switching valve 1.8 and excellent
No. 3 oil inlet ends of first valve 1.6, No. 3 oil outlet ends of pressure-gradient control valve 1.6 connect No. 2 oil inlet ends and the 3rd overflow valve of a switching valve 1.8
1.9, No. 2 oil inlet ends of switching valve 1.8, the other end of the 3rd overflow valve 1.9 with the overflow valve 1.4 of filter 1.3 and first it
Between pipeline be connected, No. 2 oil outlet ends of pressure-gradient control valve 1.6 connect No. 1 oil inlet end and a choke valve of a forward-reverse reversal valve 2.0
2.1, No. 2 oil inlet ends of switching valve 1.8 connect No. 2 oil inlet end phases with forward-reverse reversal valve 2.0 after a positive check valve 2.2
Connection, two oil outlet ends of forward-reverse reversal valve 2.0 are connected respectively two oil inlet ends of a balanced valve 2.3, balanced valve
2.3 two oil outlet ends are connected to running motor 2.4, and a cut-off is connected between two oil outlet ends of balanced valve 2.3
Valve 2.5, a fast reversal valve 2.6 of height, an oil outlet end of the fast reversal valve 2.6 of height are connected between two running motors 2.4
It is also associated with a reverse check valve 2.7, the other end of reverse check valve 2.7 and No. 2 oil inlet end phases of forward-reverse reversal valve 2.0
Even；The other end of the choke valve 2.1 connects brake disc 2.8 by a brake relief valve.
The brake relief valve includes the two-position two-way solenoid valve 2.9 of connection choke valve, in two-position two-way solenoid valve 2.9
A certain amount of pump 3.0 is connected between oil inlet end and oil outlet end, between the oil outlet end of two-position two-way solenoid valve 2.9 and constant displacement pump 3.0
A check valve 3.1 is connected with, a check valve 3.1 is connected between constant displacement pump 3.0 and the oil inlet end of two-position two-way solenoid valve 2.9.
One oil outlet end of the switching valve 1.8 connects the oil inlet end of a hydraulic cylinder 3.2, another oil outlet end of switching valve 1.8
The oil outlet end of connection liquid cylinder pressure 3.2.
A hydraulic test mouth 3.3 is connected between choke valve 2.1 and two-position two-way solenoid valve 2.9.
Prevent descending from shaking and turning to the lifting working platform Ye Qu mechanisms being emptied, forward-reverse using of the present utility model
Balanced valve 2.3 between reversal valve 2.0 and the fast reversal valve 2.6 of height, is effectively controlled by the aperture of pressure control valve throttle orifice,
So as to slow down the increase of lifting working platform speed and reduction, the generation of descending jitter phenomenon effectively prevent；Using preferential
Connection between valve 1.6 and switching valve 1.8, the fluid in steering procedure can be returned directly in fuel tank 1.1, turning to walking
During, will not produce steering pressure and the 3rd overflow valve 1.9 has pressure superposition, so as to ensure that the energy saving for turning to walking；
Positive check valve 2.2 on oil return line can establish pressure, and when going out to turn now to be emptied, fluid can pass through reverse check valve 2.7
Open and carry out repairing, the phenomenon for effectively avoiding running motor from being emptied.
Above-mentioned embodiment cannot function as the limitation to scope of protection of the utility model, for the skill of the art
For art personnel, any alternate modification or conversion made to the utility model embodiment all fall within guarantor of the present utility model
In the range of shield.
Part is not described in detail for the utility model, is the known technology of those skilled in the art of the present technique.
Claims (4)
1. a kind of prevent descending from shaking and turning to the lifting working platform Ye Qu mechanisms being emptied, including fuel tank, the oil for connecting fuel tank
Pump, a filter is connected with the oil revolving end of fuel tank, the other end of filter is connected with the first overflow valve, first overflow valve
The other end be connected with the oil outlet end of oil pump, it is characterised in that：First overflow valve is connected with one or two after being connected with oil pump
The oil inlet end of position four-way solenoid valve, an oil outlet end of two-position four-way solenoid valve connect the oil inlet end of a pressure-gradient control valve, two-position four-way electricity
Another oil outlet end of magnet valve connects the second overflow valve, the other end of the second overflow valve and another oil inlet end of two-position four-way solenoid valve
Pipeline after being connected between filter and the first overflow valve is connected, and No. 1 of No. 1 oil outlet end one switching valve of connection of pressure-gradient control valve is entered
Oily end and No. 3 oil inlet ends of pressure-gradient control valve, No. 3 oil outlet ends of pressure-gradient control valve connect No. 2 oil inlet ends and the 3rd overflow valve of a switching valve,
No. 2 oil inlet ends, pipeline of the other end of the 3rd overflow valve between filter and the first overflow valve of switching valve are connected, preferentially
No. 2 oil outlet ends of valve connect No. 1 oil inlet end and a choke valve of a forward-reverse reversal valve, No. 2 oil inlet ends connection of switching valve
It is connected after one positive check valve with No. 2 oil inlet ends of forward-reverse reversal valve, two oil outlet ends point of forward-reverse reversal valve
Two oil inlet ends of a balanced valve Dui Ying not be connected, two oil outlet ends of balanced valve are connected to running motor, in balanced valve
Two oil outlet ends between be connected with a stop valve, a fast reversal valve of height, high low speed are connected between two running motors
One oil outlet end of switching valve is also associated with a reverse check valve, the other end of reverse check valve with No. 2 of forward-reverse reversal valve
Oil inlet end is connected；The other end of the choke valve connects brake disc by a brake relief valve.
2. a kind of lifting working platform Ye Qu mechanisms for preventing that descending from being shaken and steering is emptied according to claim 1, its
It is characterised by：The brake relief valve includes the two-position two-way solenoid valve of connection choke valve, in the oil-feed of two-position two-way solenoid valve
A certain amount of pump is connected between end and oil outlet end, it is unidirectional to be connected with one between two-position two-way solenoid valve oil outlet end and constant displacement pump
Valve, a check valve is connected between constant displacement pump and two-position two-way solenoid valve oil inlet end.
3. a kind of lifting working platform Ye Qu mechanisms for preventing that descending from being shaken and steering is emptied according to claim 1, its
It is characterised by：One oil outlet end of the switching valve connects the oil inlet end of a hydraulic cylinder, another oil outlet end connection hydraulic pressure of switching valve
The oil outlet end of cylinder.
4. a kind of lifting working platform Ye Qu mechanisms for preventing that descending from being shaken and steering is emptied according to claim 2, its
It is characterised by：A hydraulic test mouth is connected between choke valve and two-position two-way solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720366911.5U CN206694340U (en) | 2017-04-07 | 2017-04-07 | It is a kind of to prevent descending from shaking and turning to the lifting working platform Ye Qu mechanisms being emptied |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720366911.5U CN206694340U (en) | 2017-04-07 | 2017-04-07 | It is a kind of to prevent descending from shaking and turning to the lifting working platform Ye Qu mechanisms being emptied |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206694340U true CN206694340U (en) | 2017-12-01 |
Family
ID=60441835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720366911.5U Withdrawn - After Issue CN206694340U (en) | 2017-04-07 | 2017-04-07 | It is a kind of to prevent descending from shaking and turning to the lifting working platform Ye Qu mechanisms being emptied |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206694340U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107061388A (en) * | 2017-04-07 | 2017-08-18 | 临工集团济南重机有限公司 | It is a kind of to prevent descending from shaking and turning to the lifting working platform Ye Qu mechanisms being emptied |
-
2017
- 2017-04-07 CN CN201720366911.5U patent/CN206694340U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107061388A (en) * | 2017-04-07 | 2017-08-18 | 临工集团济南重机有限公司 | It is a kind of to prevent descending from shaking and turning to the lifting working platform Ye Qu mechanisms being emptied |
| CN107061388B (en) * | 2017-04-07 | 2018-05-01 | 临工集团济南重机有限公司 | It is a kind of to prevent descending from shaking and turning to the lifting working platform Ye Qu mechanisms being emptied |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205820780U (en) | The self-stopping anchor winch hydraulic control system of a kind of band | |
| CN205895729U (en) | Hydraulic system and have its engineering vehicle | |
| CN102400968B (en) | Hydraulic valve, hydraulic system and concrete pumping equipment | |
| CN107061388B (en) | It is a kind of to prevent descending from shaking and turning to the lifting working platform Ye Qu mechanisms being emptied | |
| CN105545843A (en) | Hydraulic control system of self-propelled hydraulic power traction vehicle | |
| CN206694340U (en) | It is a kind of to prevent descending from shaking and turning to the lifting working platform Ye Qu mechanisms being emptied | |
| CN206467707U (en) | A kind of excavator energy regenerating and utilize system | |
| CN105805074B (en) | A kind of the multichannel valve group and hydraulic crawler excavator at three pumps interflow | |
| CN103058085B (en) | System system and rotary drilling rig | |
| CN205035044U (en) | Energy -saving fork truck hydraulic system in double pump confluence | |
| CN204553386U (en) | The control valve of proportional multi-way valve, control connection, proportional multi-way valve and hoist | |
| CN108179781A (en) | Loader hydraulic control system | |
| CN203770276U (en) | Double-way oil supply priority valve | |
| CN203230677U (en) | Automatic oil supplementing system of closed hydraulic cargo winch | |
| CN103511379B (en) | A kind of crane, hydraulic system and switching valve | |
| CN206052834U (en) | Excavator rotation energy is reclaimed and utilizes system | |
| CN106284352A (en) | Static pile press hydraulic control system | |
| CN205591274U (en) | Small -size excavator combination flow control system | |
| CN205329745U (en) | Two operation mode control systems of leveler | |
| CN210265310U (en) | Multi-pump confluence hydraulic station device | |
| CN107299655A (en) | A kind of swing arm decrease speed control loop of excavator | |
| CN203065074U (en) | Winding motor hydraulic system and rotary drilling rig | |
| CN106015125A (en) | Hydraulic system of bulldozer | |
| CN210135122U (en) | Guarantee switching-over control circuit of stable work of HB concrete pump machine | |
| CN206034442U (en) | Static pile driver hydraulic control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20171201 Effective date of abandoning: 20180501 |