CN207454420U - A kind of novel hydraulic caliberating device - Google Patents
A kind of novel hydraulic caliberating device Download PDFInfo
- Publication number
- CN207454420U CN207454420U CN201721397096.5U CN201721397096U CN207454420U CN 207454420 U CN207454420 U CN 207454420U CN 201721397096 U CN201721397096 U CN 201721397096U CN 207454420 U CN207454420 U CN 207454420U
- Authority
- CN
- China
- Prior art keywords
- hydraulic
- valve
- fuel tank
- pipe line
- ladder
- 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.)
- Active
Links
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
The utility model discloses a kind of novel hydraulic caliberating devices, and including ladder hydraulic cylinder, the upper end of ladder hydraulic cylinder is equipped with and pulling force sensor, and the upper end of pulling force sensor is equipped with load lifting limiter；The lower end of ladder hydraulic cylinder is connected with two-position four way change valve and three position four-way directional control valve by stent, the lower end of two-position four way change valve is connected with hydraulic pressure of pipe line oil strainer and electromagnetic proportion relief valve, and hydraulic pressure of pipe line oil strainer and electromagnetic proportion relief valve are connected with three position four-way directional control valve, wherein, hydraulic pressure of pipe line oil strainer is connected with hydraulic pump, hydraulic pump is connected with motor, and hydraulic pump and motor are connected with fuel tank, fuel tank hydraulic oil filter is equipped in fuel tank, fuel tank hydraulic oil filter is connected with hydraulic pump, and fuel tank is connected with two-position four way change valve.The beneficial effects of the utility model：The present apparatus is simple in structure, novel, good reliability, and stated accuracy is high, has larger calibrated span, is conducive to the popularization and application in market.
Description
Technical field
The utility model is related to a kind of novel hydraulic caliberating devices.
Background technology
Now with science and technology progress, hydraulic calibration device it is various in style, can be divided into according to executing agency following
It is several：
1st, servomotor+ball-screw+spring：
Such device drives high-accuracy ball-screw by servomotor, and leading screw finally pulls spring to act on measured workpiece,
Finally by the weighing device detection reinforcing size of spring end connection, and this signal is fed back into control system, control system is led to
Logic discrimination is crossed, servomotor is acted on, that is, forms closed-loop control system；This device is simple, high degree of automation, realizes and holds
Easily, but higher to parts requirement, ball screw accuracy is very high, but since the pulling force of spring is very limited, therefore ton can only be demarcated
The small limiter of bit comparison, calibrated span are limited；
2nd, counterweight+lever：According to the principle of lever scale, which is open loop device, by artificially being controlled, the device
Although precision is not high, calibration is reliable, but there is calibration operation is time-consuming and laborious, the degree of automation almost without the defects of；
3rd, pneumatic linear actuator pulling force and tension：By the loading of pneumatic and hydraulic cylinder, two chamber pressure difference of cylinder body is detected, and subtracts friction
Power equal loss is finally converted into pulling force, and feeds back to control system, thus control system is judged, final application valve body is opened
For degree to realize pressure control, calibration range is wider, automates also relatively good realization, but electric hydraulic control requirement is compared
Height, precision be not high；
4th, hydraulic calibration device, for hydraulic system, often takes multiple solenoid-operated proportionals to overflow in processing wide range problem
Valve is flowed, such mode, there is overflow Vavle switching phases mutually to influence, and situations such as overflow valve is needed not work, also, low pressure occurs
Of high cost under loading condition, control system is complicated, influences the small tonnage crane service life.
Above several devices can realize a certain range system calibrating, but each system structure determines its use scope, with
Enterprise's production, the increasingly quickening of design rhythm, problem above is more prominent, therefore now there is an urgent need for one kind with wide range, precision
High, reliable and higher the degree of automation caliberating device.
Utility model content
The utility model proposes a kind of novel hydraulic caliberating device, to overcome above-mentioned deficiency in the prior art.
What the technical solution of the utility model was realized in：
A kind of novel hydraulic caliberating device is provided according to the utility model, including ladder hydraulic cylinder, the ladder hydraulic pressure
The upper end of cylinder is equipped with the pulling force sensor being electrically connected with control device, and the upper end of the pulling force sensor is limited equipped with lifting capacity
Device；The lower end of the ladder hydraulic cylinder is connected with two-position four way change valve and three position four-way directional control valve by stent, described two
The lower end of four-way reversing valve is connected with hydraulic pressure of pipe line oil strainer and electromagnetic proportion relief valve, the hydraulic pressure of pipe line oil strainer and
Electromagnetic proportion relief valve is connected with control device, and the hydraulic pressure of pipe line oil strainer and electromagnetic proportion relief valve with it is described
Three position four-way directional control valve is connected, wherein, the hydraulic pressure of pipe line oil strainer is connected with hydraulic pump, and the hydraulic pump is connected with electricity
Machine, and the hydraulic pump and motor are connected with fuel tank, and fuel tank hydraulic oil filter, the fuel tank are equipped in the fuel tank
Hydraulic oil filter is connected with the hydraulic pump, and the fuel tank is connected with two-position four way change valve.
Further, the upper end of the ladder hydraulic cylinder is equipped with limit switch, the limit switch and the pull sensing
Device is connected.
Further, the two-position four way change valve is connected in the ladder hydraulic pressure in parallel with the three position four-way directional control valve
On cylinder.
Further, shut-off valve one is connected in parallel between institute's three position four-way directional control valve and hydraulic pressure of pipe line oil strainer.
Further, the lower end of the hydraulic pressure of pipe line oil strainer is connected with electromagnetic proportion relief valve.
Further, shut-off valve two is connected in parallel between the hydraulic pressure of pipe line oil strainer and hydraulic pump, and it is described
Shut-off valve two is connected with the electromagnetic proportion relief valve.
Preferably, the fuel tank is connected with air filter.
Preferably, the fuel tank is connected with shut-off valve three.
The beneficial effects of the utility model are：The present apparatus is simple in structure, novel, good reliability, and stated accuracy is high, have compared with
Big calibrated span, and calibrated error scope control, within 1%, realization automatically controls, and substantially increases production efficiency, favorably
Popularization and application in market.
Description of the drawings
It in order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model
Some embodiments, for those of ordinary skill in the art, without creative efforts, can also be according to this
A little attached drawings obtain other attached drawings.
Fig. 1 is the structure diagram according to a kind of novel hydraulic caliberating device described in the utility model embodiment；
Fig. 2 is to be conducted to illustrate according to a kind of active force of novel hydraulic caliberating device described in the utility model embodiment
Figure；
Fig. 3 is the oil cylinder according to a kind of ladder hydraulic cylinder of novel hydraulic caliberating device described in the utility model embodiment
Schematic diagram.
In figure：
1st, limit switch；2nd, pulling force sensor；3rd, ladder hydraulic cylinder；4th, two-position four way change valve；5th, 3-position 4-way commutates
Valve；6th, hydraulic pressure of pipe line oil strainer；7th, electromagnetic proportion relief valve；8th, hydraulic pump；9th, air filter；10th, fuel tank hydraulic oil mistake
Filter；11st, motor；12nd, fuel tank；13rd, shut-off valve one；14th, shut-off valve two；15th, shut-off valve three；16th, left side oil cylinder；17th, right side
Oil cylinder.
Specific embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
It is clear；It is fully described by, it is clear that the described embodiments are only a part of the embodiments of the utility model rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art's all other embodiments obtained all belong to
In the scope of the utility model protection.
As shown in Figs. 1-3, according to a kind of 1. novel hydraulic caliberating devices of the utility model embodiment, including ladder hydraulic pressure
Cylinder 3, the upper end of the ladder hydraulic cylinder 3 are equipped with the pulling force sensor 2 being electrically connected with control device, the pulling force sensor 2
Upper end is equipped with load lifting limiter；The lower end of the ladder hydraulic cylinder 3 is connected with two-position four way change valve 4 and three by stent
Four-way reversing valve 5, the lower end of the two-position four way change valve 4 are connected with hydraulic pressure of pipe line oil strainer 6 and electromagnetic proportion relief valve
7, the hydraulic pressure of pipe line oil strainer 6 and electromagnetic proportion relief valve 7 are connected with the control device, and the hydraulic pressure of pipe line
Oil strainer 6 and electromagnetic proportion relief valve 7 are connected with the three position four-way directional control valve 5, wherein, the hydraulic pressure of pipe line oil filtering
Device 6 is connected with hydraulic pump 8, and the hydraulic pump 8 is connected with motor 11, and the hydraulic pump 8 and motor 11 with 12 phase of fuel tank
Connection, the fuel tank 12 is interior to be equipped with fuel tank hydraulic oil filter 10, the fuel tank hydraulic oil filter 10 and 8 phase of hydraulic pump
Connection, and the fuel tank 12 is connected with two-position four way change valve 4.
The upper end of the ladder hydraulic cylinder 3 is equipped with limit switch 1, and the limit switch 1 is connected with the pulling force sensor 2
It connects.
The two-position four way change valve 4 is connected in parallel with the three position four-way directional control valve 5 on the ladder hydraulic cylinder 3；
Shut-off valve 1 is connected in parallel between institute's three position four-way directional control valve 5 and hydraulic pressure of pipe line oil strainer 6.
The lower end of the hydraulic pressure of pipe line oil strainer 6 is connected with electromagnetic proportion relief valve 7；The hydraulic pressure of pipe line oil filtering
Shut-off valve 2 14, and the shut-off valve 2 14 and the electromagnetic proportion relief valve 7 are connected in parallel between device 6 and hydraulic pump 8
It is connected.
Wherein, the electromagnetic proportion relief valve 7 of use be one kind can by input a constant current after, generated by electromagnet
Suction promotes valve core movement, so as to control valve port opening, to realize a kind of component of control system pressure, input
Electric current and the pressure of control are linear, and under normal circumstances, its accurate response range is certain pressure width, for example with
Its reasonable accuracy scope of certain proportional overflow solenoid valve 3-31MPa.
F=P × S in principle, wherein F are the power output of hydraulic cylinder, and P is hydraulic pressure, and S is the effective area of pressure chamber；
The power output of hydraulic cylinder is controlled in general hydraulic system, P can only be controlled, usually in face of needing slightly precise hydraulic control system
System, is usually used expensive servo valve；And for the control of wide pressure limit, then it needs using two or more ratios
Overflow valve partial pressure range restraint, such as the accurate response range of some large scale overflow valve are 3-31MPa, then small using one
The accurate response range of proportional pressure control valve is 1-3MPa....., and pressure limit is wider, and the valve of use is more, is so easy for making
Increasing into cost, the cost of the electromagnetic proportion relief valve 7 employed in this case is exactly 80% or so of entire hydraulic system cost,
The present apparatus reduces the number of electromagnetic proportion relief valve 7, is effectively reduced cost, is conducive to the popularization and application in market.
The fuel tank 12 is connected with air filter 9, and the air filter 9 effective can cross the miscellaneous of air filtering weight
Matter ensures the oil gas purity in fuel tank 12；The fuel tank 12 is connected with shut-off valve 3 15.
When specifically used, calibrated span is 200kg~5000kg, and operating pressure 3-15MPa is set by control system
Calibrating parameters.
1st, when demarcating lifting capacity 200kg~1000kg：
It will load mounted on the upper end of the pulling force sensor 2, after installation is complete for load, by the parameter of setting, make
The DT1 circuits for obtaining the ladder hydraulic cylinder 3 and the three position four-way directional control valve 5 are connected, at this time the left side of the ladder hydraulic cylinder 3
Oil cylinder 16 works, when left side, oil cylinder 16 is retracted, by the feedback of the pulling force sensor 2, described in system adjust automatically
7 input current parameter of electromagnetic proportion relief valve adjusts the aperture of the electromagnetic proportion relief valve 7 with this, when tension meets
Setting value so that the electromagnetic proportion relief valve 7 ensures this aperture, carries out pressurize.
2nd, when demarcating lifting capacity 1000kg~5000kg：
It will load mounted on the upper end of the pulling force sensor 2, after installation is complete for load, by the parameter of setting, make
The ladder hydraulic cylinder 3 and the three position four-way directional control valve 5 DT1 circuits and the ladder hydraulic cylinder 3 with described two
The DT3 circuits of four-way reversing valve 4 are turned on, at this time the left side oil cylinder 16 of the ladder hydraulic cylinder 3 and right side oil cylinder 17 while work
Make, when left side oil cylinder 16 and right side oil cylinder 17 are retracted；It is fed back by pulling force sensor, solenoid-operated proportional described in system adjust automatically
7 input current parameter of overflow valve adjusts the aperture of the electromagnetic proportion relief valve 7 with this；When tension meets setting value, make
It obtains the electromagnetic proportion relief valve 7 and ensures this aperture, carry out pressurize.
3rd, unload：
When measure finishes, control system so that the DT2 lines of the ladder hydraulic cylinder 3 and the three position four-way directional control valve 5
Road is connected, and the oil cylinder of the ladder hydraulic cylinder rises at this time, treats that oil cylinder stops in place, carries out unloading load, that is, completes a work
Make the cycle, cycle operation is carried out with this process.
Sequence of movement is as follows：
The present apparatus uses stepped design, using the setting of different calibrating parameters, using system automatic identification, realizes different
The calibration of load；In hydraulic system, the electromagnetic proportion relief valve 7 can set up the flow of overflow in proportion, anti-by flow
Feedback realizes the different switchings of the work cylinder chamber of staged hydraulic cylinder 3, realizes different operating pressure so that the control of system is more
It is accurate.
The Core Feature of the present apparatus is hydraulic cylinder is made to export oneself required power, and stablizes the size for keeping the power,
The power, which is applied to, to be calibrated on object；This case requires control force between 200kg-5000kg, and the error of power is no more than ± 1%,
The electromagnetic proportion relief valve 7 is controlled by PC control proportional overflow valve control (abbreviation valve control device), then by valve control device,
So that the electromagnetic proportion relief valve 7 controls hydraulic system pressure, so as to reach the size of control cylinder power output, while oil cylinder
Piston rod export head on equipped with pulling force sensor 2, monitor the size of power output in real time, and signal is fed back into control system,
Form closed-loop control.
The present apparatus can be divided into two by the mutual cooperation of the electromagnetic proportion relief valve 7 and staged hydraulic cylinder 3
If (power output scope is wider, and more multi-ladder may be employed in response) hydraulic pressure input oil pocket, as the small power output (200- of needs
1000kg), worked using small oil cavity, it is necessary to which bigger power output (1000-5000kg), is worked at the same time, two using two oil pockets
The operating pressure of hydraulic system can dexterously evade the solenoid-operated proportional overflow electromagnetism between 3-31MPa in the case of kind
The inaccurate scope (0-3MPa) of valve 7 realizes the calibration of high precision and large measuring range and wide scope.
Due to using the staged oil cylinder 3 and common oil cylinder cost similar, too many cost will not be increased, therefore this case is opposite
Other schemes have good economy.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
The spirit of utility model and any modification within principle, made；Equivalent substitution；Improve etc., it should be included in the utility model
Protection domain within.
Claims (8)
1. a kind of novel hydraulic caliberating device, including ladder hydraulic cylinder (3), which is characterized in that the ladder hydraulic cylinder (3) it is upper
End is equipped with the pulling force sensor (2) being electrically connected with control device, and the upper end of the pulling force sensor (2) is limited equipped with lifting capacity
Device；The lower end of the ladder hydraulic cylinder (3) is connected with two-position four way change valve (4) and three position four-way directional control valve (5) by stent,
The lower end of the two-position four way change valve (4) is connected with hydraulic pressure of pipe line oil strainer (6) and electromagnetic proportion relief valve (7), described
Hydraulic pressure of pipe line oil strainer (6) and electromagnetic proportion relief valve (7) are connected with control device, and hydraulic pressure of pipe line oil filtering
Device (6) and electromagnetic proportion relief valve (7) are connected with the three position four-way directional control valve (5), wherein, the hydraulic pressure of pipe line oil filtering
Device (6) is connected with hydraulic pump (8), and the hydraulic pump (8) is connected with motor (11), and the hydraulic pump (8) and motor (11)
It is connected with fuel tank (12), fuel tank hydraulic oil filter (10), the fuel tank hydraulic oil filtering is equipped in the fuel tank (12)
Device (10) is connected with the hydraulic pump (8), and the fuel tank (12) is connected with two-position four way change valve (4).
2. novel hydraulic caliberating device according to claim 1, which is characterized in that the upper end of the ladder hydraulic cylinder (3)
Equipped with limit switch (1), the limit switch (1) is connected with the pulling force sensor (2).
3. novel hydraulic caliberating device according to claim 1, which is characterized in that the two-position four way change valve (4) with
The three position four-way directional control valve (5) is connected in parallel on the ladder hydraulic cylinder (3).
4. novel hydraulic caliberating device according to claim 3, which is characterized in that institute's three position four-way directional control valve (5) and pipe
Road hydraulic oil filter is connected in parallel to shut-off valve one (13) between (6).
5. novel hydraulic caliberating device according to claim 4, which is characterized in that the hydraulic pressure of pipe line oil strainer (6)
Lower end be connected with electromagnetic proportion relief valve (7).
6. novel hydraulic caliberating device according to claim 5, which is characterized in that the hydraulic pressure of pipe line oil strainer (6)
Shut-off valve two (14), and the shut-off valve two (14) and the solenoid-operated proportional overflow are connected in parallel between hydraulic pump (8)
Valve (7) is connected.
7. novel hydraulic caliberating device as claimed in any of claims 1 to 6, which is characterized in that the fuel tank
(12) it is connected with air filter (9).
8. novel hydraulic caliberating device as claimed in any of claims 1 to 6, which is characterized in that the fuel tank
(12) it is connected with shut-off valve three (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721397096.5U CN207454420U (en) | 2017-10-27 | 2017-10-27 | A kind of novel hydraulic caliberating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721397096.5U CN207454420U (en) | 2017-10-27 | 2017-10-27 | A kind of novel hydraulic caliberating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207454420U true CN207454420U (en) | 2018-06-05 |
Family
ID=62281830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721397096.5U Active CN207454420U (en) | 2017-10-27 | 2017-10-27 | A kind of novel hydraulic caliberating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207454420U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116006527A (en) * | 2023-02-09 | 2023-04-25 | 常州聚卓智能科技有限公司 | High-precision portable hydraulic control device and track sensor calibration system |
-
2017
- 2017-10-27 CN CN201721397096.5U patent/CN207454420U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116006527A (en) * | 2023-02-09 | 2023-04-25 | 常州聚卓智能科技有限公司 | High-precision portable hydraulic control device and track sensor calibration system |
| CN116006527B (en) * | 2023-02-09 | 2024-01-30 | 常州聚卓智能科技有限公司 | High-precision portable hydraulic control device and track sensor calibration system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107023536B (en) | Engineering machinery hydraulic cylinder dynamic performance integrated test platform | |
| CN103644151B (en) | The test bed hydraulic control system of energy-conservation low impact hydraulic cylinder | |
| CN109654074A (en) | A kind of construction machinery hydraulic system | |
| CN102616660A (en) | Dead weight drop amplitude compensating hydraulic system, crane and control system thereof | |
| CN102094865A (en) | Intelligent electrohydraulic flow servo valve | |
| CN109630491A (en) | A kind of automatically controlled compensation two-way proportional flow control valve | |
| CN207454420U (en) | A kind of novel hydraulic caliberating device | |
| CN105984809B (en) | Hydraulic system and crane | |
| CN103711737B (en) | Large structure hydraulic pressure lifts shifting process and state control structure | |
| CN109368500A (en) | A kind of the full Terrain Cranes setting-up extension and retraction system and control method | |
| CN201228693Y (en) | Adaptation type hydraulic system of closed-loop control load for computer | |
| CN207406582U (en) | A kind of hydraulic device of intelligence electric-liquid type pressure test machine | |
| CN101046255A (en) | Great flow rate proportional water valve | |
| CN209455962U (en) | A kind of the full Terrain Cranes setting-up extension and retraction system | |
| CN203011494U (en) | Pneumatic liquid adding verification device for float type liquid level sensor | |
| CN201890108U (en) | Proportional synchronous lifting system | |
| CN207637404U (en) | A kind of hydraulic test instructional device | |
| Djurovic et al. | New control strategies for electrohydraulic load-sensing | |
| CN215927956U (en) | Intelligent control hydraulic system | |
| CN201621117U (en) | Intelligent electrohydraulic flux servo valve | |
| CN106706070B (en) | A kind of air blowing type ship liquid level measuring system of dynamic pressure output | |
| CN210946937U (en) | Energy-saving control system of excavator | |
| CN107859665A (en) | A kind of fluid control pressure valve group | |
| CN211291871U (en) | Automatic calibration device of pressure transmitter | |
| CN208532037U (en) | Can automatic identification weight balance weight system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |