CN107795278A - Stake machine equipment method for limiting speed and hydraulic speed-limiting system - Google Patents
Stake machine equipment method for limiting speed and hydraulic speed-limiting system Download PDFInfo
- Publication number
- CN107795278A CN107795278A CN201711133709.9A CN201711133709A CN107795278A CN 107795278 A CN107795278 A CN 107795278A CN 201711133709 A CN201711133709 A CN 201711133709A CN 107795278 A CN107795278 A CN 107795278A
- Authority
- CN
- China
- Prior art keywords
- pressure
- valve
- hydraulic
- oil
- shuttle valve
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000012530 fluid Substances 0.000 claims abstract description 17
- 230000007246 mechanism Effects 0.000 claims description 23
- 230000033228 biological regulation Effects 0.000 claims description 8
- 230000006837 decompression Effects 0.000 claims description 6
- 238000010276 construction Methods 0.000 abstract description 4
- 241000282693 Cercopithecidae Species 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000005553 drilling Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 101100532451 Rattus norvegicus Slc22a17 gene Proteins 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000001595 flow curve Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/02—Drilling rigs characterised by means for land transport with their own drive, e.g. skid mounting or wheel mounting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
- F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/025—Pressure reducing valves
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The present invention provides a kind of stake machine equipment method for limiting speed and hydraulic speed-limiting system, wherein method for limiting speed and comprised the following steps：S1, rotary motor is operated by turning round operation handle turning round, the pressure oil among the A/B hydraulic fluid ports of the working oil path of rotary motor is by turning round shuttle valve one；S2, revolution shuttle valve one select the pressure oil circuit of larger pressure among A/B hydraulic fluid ports to be communicated to the oil inlet of pressure-reducing valve；After S3, pressure oil are depressurized by pressure-reducing valve, pilot operated directional control valve is opened by depressurizing the pressure of working oil path of valve outlet, enters shuttle valve two；Shuttle valve two is connected to the pump variable piston of hydraulic pump；S4, shuttle valve two compare the pressure N of working oil path and the feedback pressure P of hydraulic valve, and the big pressure oil all the way of pressure enters the pump variable piston of hydraulic pump, adjusts the discharge capacity of hydraulic pump；Realize the speed of control equipment.The present invention is easy to implement, simple in construction, and cost is low, can improve the safe operation performance of a machine and the conformability to complex working condition well.
Description
Technical field
The present invention relates to a kind of method for limiting speed and hydraulic speed-limiting system, and in particular to a kind of stake machine equipment method for limiting speed
And hydraulic speed-limiting system, more particularly to the method for limiting speed of the stake machine equipment based on minus flow hydraulic control and hydraulic speed-limiting system
System.
Background technology
Stake machine is a kind of piling machinery for being used to drive piles, using impulsive force by stake injection stratum, available for high ferro construction.
The stake machine industry market analysis of 2012-2016 China is shown with investment landscape research report：Stake machine is various in style, and the most frequently used is several
Kind：Screw pile driver, diesel hammer piling machine, direct and reverse circulation drilling machine, percussive drill, board-plugging device, Drop hammer pile driver etc..With the whole world
Financial storm comes, and each state all stimulates domestic demand policy in execution, and Investment portion of the China every year in terms of infrastructure is larger,
The particularly rapid development of high ferro, the new round climax of piling machinery is driven.
Stake machine is typically by pile monkey, pile frame, column, hound, chassis, walking mechanism, slew gear, hoisting mechanism, manipulation
Room, hydraulic system and electrical system etc. form.Pile monkey be attached to the anterior two parallel vertical guide rods (being commonly called as gantry) of pile frame it
Between, hang liter to lifting hook.Pile frame is a steelwork tower truss, and portion is provided with hoist engine behind, to lift by crane stake and pile monkey.Stake
The leading truck being made up of before frame two guide rods, to control piling direction, make stake according to design orientation injection stratum exactly.
The basic fundamental parameter of piling machine is impact moiety by weight, impact kinetic energy and frequency of impact.Pile monkey can by the power resources of motion
Be divided into drop hammer, steam hammer, diesel hammer, hydraulic hammer etc., a special slew gear, convenient rotation are typically provided on piling machine.
And this piling machine typically controls everything respectively using one group of inverted flux control valve at present, because equipment
Big flow is needed, so when revolution, easily causes excessive velocities.The restriction system for slew gear rotational speed is at present
The rotational speed of slew gear is controlled by limiting the operational stroke of hydraulic handle, but this scheme has the shortcomings that apparent
It is：Rotation pressure needs what high pulling torque turned round because the middle position oil return of minus flow causes pressure to reach setting pressure, some
Revolution action can not be performed under operating mode.
In addition, also having by forcing to throttle, unnecessary flow is acted by overflow valve overflow to realize revolution, but this
The shortcomings that kind scheme is that system heat generation is very serious, influences the service life of equipment.
Two parts of documents disclose the rotary system and control method of two kinds of control rotational speeds below：
Documents 1：CN103669463B discloses acceleration control method, device and the excavation of a kind of Control in Hydraulic Rotation System
Machine.Control method is accelerated to include：Step 10, the current pressure of drum pump is obtained；Step 20, current pressure and threshold pressure are judged
Between relation, current pressure be more than threshold pressure in the case of, perform step 30；Step 30, by the flow control of drum pump
Electric current processed reduces first predetermined value to obtain the flow control electric current of next control so as to control the flow of drum pump；Step 40, is followed
Ring performs step 10 to 30, until current pressure is less than or equal to threshold pressure.
Documents 2：CN103527073B discloses a kind of rotary drilling rig control revolution hydraulic circuit system, including main pump,
The main pump has main control valve by pipeline connection, and main control valve has been respectively communicated with pilot handle and rotary motor by pipeline；It is described
Also there is revolution deceleration device by pipeline connection between main pump and main control valve, the present invention uses such scheme, and rotary drilling rig is without dynamic
Make or revolution beyond other actions when, the magnetic valve that turns round in deceleration device must not electricity, the feedback oil circuit of main valve produces feedback
Pressure is through turning round the shuttle valve in deceleration device to main pump stroking mechanism.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of stake machine equipment method for limiting speed and hydraulic speed-limiting system, work
Include but is not limited to slew gear, hoisting mechanism as device；The method for limiting speed and hydraulic speed-limiting system are reached by limiting pumpage
To the purpose of limitation stake machine equipment maximal rate.
In order to solve the above-mentioned technical problem, the present invention uses following technical scheme：
A kind of stake machine equipment method for limiting speed is provided, the equipment is the slew gear of stake machine, specifically include as
Lower step：
S1, shuttle valve one is set among the A/B hydraulic fluid ports of slew gear rotary motor working oil path；Rotary motor is correspondingly arranged
Operation handle；During work, rotary motor being operated by operation handle and turned round, hydraulic pressure pump discharge head oil gives operation handle, and to
Turn round banked direction control valves connection conveying control pressure；Pressure oil among the A/B hydraulic fluid ports of rotary motor working oil path passes through shuttle valve one；
S2, the shuttle valve one select the pressure oil circuit of larger pressure in A/B hydraulic fluid ports to be communicated to the oil inlet of pressure-reducing valve；
After S3, pressure oil are depressurized by pressure-reducing valve, liquid controlled reversing is opened by depressurizing the pressure of working oil path of valve outlet
Valve, then pressure oil shuttle valve two is entered by pilot operated directional control valve；Shuttle valve two is connected to the pump variable piston of hydraulic pump；
S4, the pressure of working oil path in step S3 after pressure-reducing valve depressurizes is set as N；Turn round the feedback pressure of banked direction control valves connection
For P；Feedback pressure P changes according to the changes in amplitude of operation handle, and the operation amplitude of operation handle is bigger, and feedback pressure P is got over
It is small；It is otherwise bigger；
Shuttle valve two compares pressure N and feedback pressure P, and the big pressure oil all the way of pressure enters the pump variable piston of hydraulic pump,
Adjust the discharge capacity of hydraulic pump；Work as N>During P, pressure oil will directly control the pump variable piston boit of hydraulic pump all the way corresponding to pressure N
Plug, so as to control the discharge capacity of hydraulic pump, realize the speed of control equipment.
Further,
When operation handle is failure to actuate, the feedback pressure P of revolution banked direction control valves connection is maximum, and now the output flow Q of pump is smaller；
When operation handle to maximum position, the feedback pressure P convergences 0 of hydraulic valve, now the output flow Q of pump is bigger.
Pressure N, refer to the attached drawing 3, pressure N regulation section 1 can be adjusted by adjusting pressure-reducing valve<N<4.Work as operation handle
In the startup operation stage, hydraulic valve feedback pressure P is more than pressure N；When feedback pressure P is less than N, now, hydraulic pump it is maximum defeated
Outflow is flow Q corresponding to N, therefore can realize the maximum output stream to hydraulic pump by the regulation of the size to pressure N
The regulation of amount, so as to limit the maximal rate of slew gear.
Further,
Above-mentioned method for limiting speed can also be applied to the hoisting mechanism of stake machine, i.e.,：The equipment is hoisting mechanism, described
The method for limiting speed of hoisting mechanism specifically comprises the following steps：
S1, shuttle valve one is set among the A/B hydraulic fluid ports of hoisting mechanism hoist motor working oil path；Hoist motor is correspondingly arranged
Operation handle；During work, hoist motor being operated by operation handle and turned round, hydraulic pressure pump discharge head oil gives operation handle, and to
Elevator banked direction control valves connection conveying control pressure；Pressure oil among the A/B hydraulic fluid ports of hoist motor working oil path passes through shuttle valve one；
S2, the shuttle valve one select the pressure oil circuit of larger pressure in the A/B hydraulic fluid ports of hoist motor working oil path to be communicated to
The oil inlet of pressure-reducing valve；
After S3, pressure oil are depressurized by pressure-reducing valve, liquid controlled reversing is opened by depressurizing the pressure of working oil path of valve outlet
Valve, then pressure oil shuttle valve two is entered by pilot operated directional control valve；Shuttle valve two is connected to the pump variable piston of hydraulic pump；
S4, the pressure of working oil path in step S3 after pressure-reducing valve depressurizes is set as N；The feedback pressure of elevator banked direction control valves connection
For P；Feedback pressure P changes according to the changes in amplitude of operation handle, and the operation amplitude of operation handle is bigger, and feedback pressure P is got over
It is small；It is otherwise bigger；
Shuttle valve two compares pressure N and feedback pressure P, and the big pressure oil all the way of pressure enters the pump variable piston of hydraulic pump,
Adjust the discharge capacity of hydraulic pump；Work as N>During P, pressure oil will directly control the pump variable piston boit of hydraulic pump all the way corresponding to pressure N
Plug, so as to control the discharge capacity of hydraulic pump, realize the speed of control equipment.
Further,
When operation handle is failure to actuate, the feedback pressure P of elevator banked direction control valves connection is maximum, now the output flow Q of hydraulic pump
It is smaller；
When operation handle to maximum position, the output stream of the feedback pressure P convergences 0, now hydraulic pump of elevator banked direction control valves connection
It is bigger to measure Q.
The speed limit principle of hoisting mechanism is identical with the speed limit principle of above-mentioned slew gear.
The present invention also provides a kind of hydraulic speed-limiting system using above-mentioned stake machine equipment method for limiting speed, the stake machine work
Making device includes slew gear, and the slew gear hydraulic speed-limiting system includes：
Hydraulic pump, revolution banked direction control valves connection, shuttle valve one, rotary motor, pressure-reducing valve, pilot operated directional control valve, pump variable piston, shuttle valve
Two；Revolution banked direction control valves connection is arranged on hydraulic pump output oil pipe road, and hydraulic pump is by turning round banked direction control valves connection connection rotary motor；Return
Turn motor and be correspondingly arranged operation handle；
The shuttle valve one is arranged among the A/B mouths of the working oil path of rotary motor；
The shuttle valve one pressure oil circuit larger in the A/B mouths for selecting rotary motor working oil path is simultaneously connected to decompression
The oil inlet of valve；
The pressure oil circuit of the oil-out of the pressure-reducing valve includes two-way：Connected all the way with the oil inlet of pilot operated directional control valve, separately
Connected all the way with the control mouth of pilot operated directional control valve；
The oil-out of pilot operated directional control valve is connected with one end of shuttle valve two, and the other end of shuttle valve two and the pump variable of hydraulic pump are lived
Plug connection.
Further,
The stake machine equipment also includes hoisting mechanism；Hoisting mechanism hydraulic speed-limiting system includes：
Hydraulic pump, elevator banked direction control valves connection, shuttle valve one, hoist motor, pressure-reducing valve, pilot operated directional control valve, pump variable piston, shuttle valve
Two；Elevator banked direction control valves connection is arranged on hydraulic pump output oil pipe road, and hydraulic pump joins connection hoist motor by elevator banked direction control valves；Volume
Raise motor and be correspondingly arranged operation handle；
The shuttle valve one is arranged among the A/B mouths of the working oil path of hoist motor；
The shuttle valve one pressure oil circuit larger in the A/B mouths for selecting hoist motor working oil path is simultaneously connected to decompression
The oil inlet of valve；
The pressure oil circuit of the oil-out of the pressure-reducing valve includes two-way：Connected all the way with the oil inlet of pilot operated directional control valve, separately
Connected all the way with the control mouth of pilot operated directional control valve；
The oil-out of pilot operated directional control valve is connected with one end of shuttle valve two, and the other end of shuttle valve two and the pump variable of hydraulic pump are lived
Plug connection.
The present invention also provides a kind of stake machine of minus flow hydraulic control, and described device includes slew gear and hoisting mechanism,
The slew gear uses above-mentioned hydraulic speed-limiting system.
Further,
Hoisting mechanism in the stake machine of above-mentioned minus flow hydraulic control uses above-mentioned hydraulic speed-limiting system.
When the equipment for operating stake machine is turned round, the pressure oil of equipment rotation oil can pass through the present invention
The scheme of offer, is controlled to pumpage, can be by the rotational speed of equipment (including slew gear, motor mechanism etc.)
Adjust rational operation interval.
The present invention is easy to implement, simple in construction, and cost is low, can improve the safe operation performance of a machine well and to multiple
The conformability of general labourer's condition.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the stake machine equipment hydraulic control system of prior art；
Fig. 2 is the structural representation of the stake machine equipment hydraulic speed-limiting system of the embodiment of the present invention；
Fig. 3 is the fundamental diagram of the stake machine equipment hydraulic speed-limiting system of the embodiment of the present invention；
Above-mentioned reference：
Hydraulic pump 1', revolution banked direction control valves connection 2', rotary motor 4', unit head banked direction control valves connection 5', power head motor 6', pump become
Measure piston 9'；
Hydraulic pump 1, revolution banked direction control valves connection 2, revolution shuttle valve 1, rotary motor 4, elevator banked direction control valves connection 5, hoist motor 6,
Pressure-reducing valve 7, pilot operated directional control valve 8, pump variable piston 9, shuttle valve 2 10；
A, B is the working oil crossing of rotary motor (hoist motor)；A, b is the actuator port of revolution banked direction control valves connection；C, d is
The actuator port of elevator banked direction control valves connection；
Q is the flow of hydraulic pump；C is hydraulic pump flow curve；D is hydraulic pump power curve；P is feedback pressure；P2 is
The pressure of working oil path.
Embodiment
Below in conjunction with the accompanying drawings and embodiment the present invention is further described, but be not limited to the scope of the present invention.
Embodiment 1
As shown in Figure 1, the hydraulic control system of existing stake machine equipment includes：Hydraulic pump 1', revolution banked direction control valves connection
2', rotary motor 4', unit head banked direction control valves connection 5', power head motor 6', pump variable piston 9'；
The hydraulic control system that the present embodiment provides can not be automatically performed to stake machine equipment (slew gear, hoist engine
Structure) maximal rate control, the service life of equipment can be made a big impact, largely reduce equipment use the longevity
Life.
Embodiment 2
As Figure 2-3, the present embodiment provides a kind of stake machine using minus flow hydraulic control, including slew gear, volume
Raise mechanism etc.；The slew gear uses following hydraulic speed-limiting system, specifically includes：
Hydraulic pump 1, revolution banked direction control valves connection 2, shuttle valve 1, rotary motor 4, elevator banked direction control valves connection 5, hoist motor 6, decompression
Valve 7, pilot operated directional control valve 8, pump variable piston 9, shuttle valve 2 10；
Shuttle valve 1 is arranged among the A/B mouths of the revolution working oil path of rotary motor 4；Shuttle valve 1 is used to select revolution horse
Up to the larger pressure oil circuit in the A/B mouths centre of 4 working oil paths and it is connected to the oil inlet of pressure-reducing valve 7；
The pressure oil circuit of the oil-out of pressure-reducing valve 7 includes two-way：The oil inlet with pilot operated directional control valve 8 connects all the way, another
Road connects with the control mouth of pilot operated directional control valve 8；
The oil-out of pilot operated directional control valve 8 is connected with one end of shuttle valve 2 10, the other end of shuttle valve 2 10 and the pump of hydraulic pump 1
Variable piston 9 connects.
The method for limiting speed of above-mentioned hydraulic speed-limiting system, specifically comprises the following steps：
S1, shuttle valve 1 is set among the A/B hydraulic fluid ports of the working oil path of slew gear rotary motor 4；The correspondence of rotary motor 4
Operation handle is set；During work, turned round by turning round operation handle operation rotary motor 4, the discharge pressure of hydraulic pump 1 oil is to operation
Handle, and convey control pressure to revolution banked direction control valves connection 2；Pressure oil among the A/B hydraulic fluid ports of the working oil path of rotary motor 4
Pass through shuttle valve 1；
S2, shuttle valve 1 select the pressure oil circuit of larger pressure in A/B hydraulic fluid ports to be communicated to the oil inlet of pressure-reducing valve 7；
After S3, pressure oil are depressurized by pressure-reducing valve 7, and the pressure of the working oil path exported by pressure-reducing valve 7 opens hydraulic control
Reversal valve 8, shuttle valve 2 10 is then entered by pilot operated directional control valve 8；Shuttle valve 2 10 is connected to the pump variable piston 9 of hydraulic pump 1；
S4, set in step S3 through pressure-reducing valve 7 decompression after working oil path pressure as N；Turn round the feedback of banked direction control valves connection 2
Pressure is P；Feedback pressure P changes according to the changes in amplitude of revolution operation handle；The operation amplitude of operation handle is bigger, feedback
Pressure P is smaller；It is otherwise bigger；
Shuttle valve 2 10 compares pressure N and feedback pressure P, and the pump variable that the big pressure oil all the way of pressure enters hydraulic pump 1 is lived
Plug 9, adjust the discharge capacity of hydraulic pump 1；Work as N>During P, pressure oil will directly control the pump variable of hydraulic pump 1 all the way corresponding to pressure N
The plunger of piston 9, so as to control the discharge capacity of hydraulic pump 1, realize the speed of control equipment.
Specifically, the operation principle of the present embodiment is illustrated with reference to Fig. 2,3：
P2 described in Fig. 3 refers to the startup pressure of working oil path, and pressure N is obtained after the decompression of pressure-reducing valve 7.
To limit the maximal rate of rotary motor 4, according to the control principle of minus flow hydraulic control, with reference to this implementation of accompanying drawing
The principle of example illustrates：
Rotary motor 4, revolution banked direction control valves connection 2 are operated when in FIG. 2, it is assumed that engine speed is constant, passing through operation handle
Feedback pressure P according to revolution operation handle changes in amplitude and change, revolution banked direction control valves connection 2 feedback pressure P Fig. 3's
Change between section 1 to 4, it is assumed that the feedback pressure P of revolution banked direction control valves connection 2 is up to the 4 of Fig. 3, and revolution operation handle is failure to actuate
When, the feedback pressure P of revolution banked direction control valves connection 2 is 4, and when turning round, operation handle amplitude is bigger, the feedback pressure of revolution banked direction control valves connection 2
P is smaller, and when revolution operation handle to maximum position, the feedback pressure P convergences 0 of revolution banked direction control valves connection 2, now hydraulic pump 1 is defeated
Outflow Q is bigger, and the output flow Q of hydraulic pump 1 is as shown in the C curve of Fig. 3 left sides.
When operation rotary motor 4, the working oil path oil-feed end pressure of rotary motor 4 is subtracted by turning round shuttle valve 1 and entering
Pressure valve 7, the pressure N that pressure-reducing valve 7 exports open pilot operated directional control valve 8, by pilot operated directional control valve 8, enter shuttle valve 2 10, at this moment shuttle
Valve 2 10 compares this pressure N and turns round the feedback pressure P of banked direction control valves connection 2, by adjust pressure-reducing valve 7 can adjust pressure N (can be with
It is set as arbitrary value between 1 to the 4 of the left figure of accompanying drawing 3), when revolution operation handle is more than N, liquid in startup operation stage, pressure P
The output flow Q of press pump 1 is the left-most curve of accompanying drawing 3, and when pressure P is less than N, now, the maximum output flow of hydraulic pump 1 is N
Corresponding flow Q, the size adjusted according to N, the maximum output flow of hydraulic pump 1 can be adjusted, so as to limit slew gear
Maximal rate.
Variable point of the maximum stream flow curve with power curve D crosspoints and for pump in fig. 3.When rotation pressure continues to increase
Add, when the power of pump exceedes the power and variable point of pump setting, the speed of revolution will be run according to power curve D.
Embodiment 3
The difference of the present embodiment and embodiment 2 is in revolution shuttle valve 1 setting returning to hoist motor that will be in embodiment 1
Turn among the A/B mouths of working oil path, that is, above the technical scheme of embodiment 1 is applied to Fig. 2 hoist motor loop；It is described
Shuttle valve one is used to select pressure oil circuit larger among the A/B mouths of rotary motor working oil path and is connected to the oil-feed of pressure-reducing valve
Mouthful, the hydraulic speed-limiting system of the present embodiment is used for the maximum output flow by adjusting hydraulic pump, so as to limit hoisting mechanism
Maximal rate, speed limit is carried out to hoisting mechanism for realizing.Specific operation principle is similar to Example 1.
When operating the equipment of stake machine, equipment (including slew gear and hoisting mechanism in above-described embodiment
Deng) corresponding to the pressure oil in motor operations loop pumpage can be controlled by scheme provided by the invention, pass through tune
Rational operation interval can be arrived by the speed regulation of equipment by saving the discharge capacity of hydraulic pump.
The present invention is easy to implement, simple in construction, and cost is low, can improve the safe operation performance of a machine well and to multiple
The conformability of general labourer's condition.
General principle, principal character and the advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the simply explanation described in above-described embodiment and specification is originally
The principle of invention, various changes and modifications of the present invention are possible without departing from the spirit and scope of the present invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent defines.
Claims (5)
- A 1. machine equipment method for limiting speed, it is characterised in that the equipment be stake machine slew gear, specifically include as Lower step：S1, shuttle valve one is set among the A/B hydraulic fluid ports of slew gear rotary motor working oil path；Rotary motor is correspondingly arranged operation Handle；During work, rotary motor being operated by operation handle and turned round, hydraulic pressure pump discharge head oil gives operation handle, and to revolution Banked direction control valves connection conveying control pressure；Pressure oil among the A/B hydraulic fluid ports of rotary motor working oil path passes through shuttle valve one；S2, the shuttle valve one select the pressure oil circuit of larger pressure in A/B hydraulic fluid ports to be communicated to the oil inlet of pressure-reducing valve；After S3, pressure oil are depressurized by pressure-reducing valve, pilot operated directional control valve is opened by depressurizing the pressure of working oil path of valve outlet, so Pressure oil enters shuttle valve two by pilot operated directional control valve afterwards；Shuttle valve two is connected to the pump variable piston of hydraulic pump；S4, the pressure of working oil path in step S3 after pressure-reducing valve depressurizes is set as N；The feedback pressure for turning round banked direction control valves connection is P； Feedback pressure P changes according to the changes in amplitude of operation handle, and the operation amplitude of operation handle is bigger, and feedback pressure P is smaller；Instead It is bigger；Shuttle valve two compares pressure N and feedback pressure P, and the big pressure oil all the way of pressure enters the pump variable piston of hydraulic pump, regulation The discharge capacity of hydraulic pump；Work as N>During P, pressure oil will directly control the pump variable piston of hydraulic pump all the way corresponding to pressure N, from And the discharge capacity of hydraulic pump is controlled, realize the speed of control equipment.
- 2. according to claim 1 machine equipment method for limiting speed, it is characterised in thatWhen operation handle is failure to actuate, the feedback pressure P of revolution banked direction control valves connection is maximum, and now the output flow Q of pump is smaller；When operation handle to maximum position, the feedback pressure P convergences 0 of hydraulic valve, now the output flow Q of pump is bigger；Pressure N can be adjusted by adjusting pressure-reducing valve, when operation handle is more than in startup operation stage, hydraulic valve feedback pressure P Pressure N；When feedback pressure P is less than N, now, the maximum output flow of hydraulic pump is flow Q corresponding to N, therefore can be by right The regulation of pressure N size, the regulation to the maximum output flow of hydraulic pump is realized, so as to limit the maximum speed of slew gear Degree.
- 3. according to claim 1 machine equipment method for limiting speed, it is characterised in thatThe equipment is hoisting mechanism, and the method for limiting speed of the hoisting mechanism specifically comprises the following steps：S1, shuttle valve one is set among the A/B hydraulic fluid ports of hoisting mechanism hoist motor working oil path；Hoist motor is correspondingly arranged operation Handle；During work, hoist motor being operated by operation handle and turned round, hydraulic pressure pump discharge head oil gives operation handle, and to elevator Banked direction control valves connection conveying control pressure；Pressure oil among the A/B hydraulic fluid ports of hoist motor working oil path passes through shuttle valve one；S2, the shuttle valve one select the pressure oil circuit of larger pressure in the A/B hydraulic fluid ports of hoist motor working oil path to be communicated to decompression The oil inlet of valve；After S3, pressure oil are depressurized by pressure-reducing valve, pilot operated directional control valve is opened by depressurizing the pressure of working oil path of valve outlet, so Pressure oil enters shuttle valve two by pilot operated directional control valve afterwards；Shuttle valve two is connected to the pump variable piston of hydraulic pump；S4, the pressure of working oil path in step S3 after pressure-reducing valve depressurizes is set as N；The feedback pressure of elevator banked direction control valves connection is P； Feedback pressure P changes according to the changes in amplitude of operation handle, and the operation amplitude of operation handle is bigger, and feedback pressure P is smaller；Instead It is bigger；Shuttle valve two compares pressure N and feedback pressure P, and the big pressure oil all the way of pressure enters the pump variable piston of hydraulic pump, regulation The discharge capacity of hydraulic pump；Work as N>During P, pressure oil will directly control the pump variable piston of hydraulic pump all the way corresponding to pressure N, from And the discharge capacity of hydraulic pump is controlled, realize the speed of control equipment.
- A 4. machine equipment hydraulic speed-limiting system, it is characterised in that the stake machine equipment includes slew gear, turn-around machine Structure hydraulic speed-limiting system includes：Hydraulic pump, revolution banked direction control valves connection, shuttle valve one, rotary motor, pressure-reducing valve, pilot operated directional control valve, pump variable piston, shuttle valve two； Revolution banked direction control valves connection is arranged on hydraulic pump output oil pipe road, and hydraulic pump is by turning round banked direction control valves connection connection rotary motor；Revolution Motor is correspondingly arranged operation handle；The shuttle valve one is arranged among the A/B mouths of the working oil path of rotary motor；The shuttle valve one pressure oil circuit larger in the A/B mouths for selecting rotary motor working oil path is simultaneously connected to pressure-reducing valve Oil inlet；The pressure oil circuit of the oil-out of the pressure-reducing valve includes two-way：Connected all the way with the oil inlet of pilot operated directional control valve, another way Connected with the control mouth of pilot operated directional control valve；The oil-out of pilot operated directional control valve is connected with one end of shuttle valve two, and the other end of shuttle valve two and the pump variable piston of hydraulic pump connect Connect.
- 5. according to claim 4 machine equipment hydraulic speed-limiting system, it is characterised in thatThe stake machine equipment also includes hoisting mechanism；Hoisting mechanism hydraulic speed-limiting system includes：Hydraulic pump, elevator banked direction control valves connection, shuttle valve one, hoist motor, pressure-reducing valve, pilot operated directional control valve, pump variable piston, shuttle valve two； Elevator banked direction control valves connection is arranged on hydraulic pump output oil pipe road, and hydraulic pump joins connection hoist motor by elevator banked direction control valves；Elevator Motor is correspondingly arranged operation handle；The shuttle valve one is arranged among the A/B mouths of the working oil path of hoist motor；The shuttle valve one pressure oil circuit larger in the A/B mouths for selecting hoist motor working oil path is simultaneously connected to pressure-reducing valve Oil inlet；The pressure oil circuit of the oil-out of the pressure-reducing valve includes two-way：Connected all the way with the oil inlet of pilot operated directional control valve, another way Connected with the control mouth of pilot operated directional control valve；The oil-out of pilot operated directional control valve is connected with one end of shuttle valve two, and the other end of shuttle valve two and the pump variable piston of hydraulic pump connect Connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711133709.9A CN107795278B (en) | 2017-11-16 | 2017-11-16 | Speed limiting method for working device of pile driver and hydraulic speed limiting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711133709.9A CN107795278B (en) | 2017-11-16 | 2017-11-16 | Speed limiting method for working device of pile driver and hydraulic speed limiting system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107795278A true CN107795278A (en) | 2018-03-13 |
| CN107795278B CN107795278B (en) | 2023-08-01 |
Family
ID=61535188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711133709.9A Active CN107795278B (en) | 2017-11-16 | 2017-11-16 | Speed limiting method for working device of pile driver and hydraulic speed limiting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107795278B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005036870A (en) * | 2003-07-14 | 2005-02-10 | Nachi Fujikoshi Corp | Dual rotation type hydraulic pump device |
| JP2009167618A (en) * | 2008-01-11 | 2009-07-30 | Caterpillar Japan Ltd | Hydraulic circuit of hydraulic excavator |
| CN201943570U (en) * | 2010-12-30 | 2011-08-24 | 北京市三一重机有限公司 | Upper-part rotation speed-limiting device for rotary drilling rig |
| WO2012081201A1 (en) * | 2010-12-17 | 2012-06-21 | 川崎重工業株式会社 | Drive control method for operating machine |
| CN102979775A (en) * | 2012-11-16 | 2013-03-20 | 中联重科股份有限公司 | Engineering machinery and hydraulic control operation system thereof |
| CN103527073A (en) * | 2013-10-23 | 2014-01-22 | 福田雷沃国际重工股份有限公司 | Rotation controlling hydraulic circuit system for rotary drilling rig |
| WO2015035454A1 (en) * | 2013-09-13 | 2015-03-19 | Oilpath Hydraulics Pty Ltd | Hydraulic motor circuit |
| CN204549901U (en) * | 2014-12-31 | 2015-08-12 | 徐工集团工程机械股份有限公司 | A kind of digital gravity variable amplitude hydraulic system |
| CN205605209U (en) * | 2016-05-05 | 2016-09-28 | 湖南科技大学 | Multi -functional coal seam scour protection efflux drilling joint -cutting shower nozzle |
| CN106321541A (en) * | 2016-08-30 | 2017-01-11 | 中煤科工集团西安研究院有限公司 | Electric-hydraulic double-control hydraulic system and method for vehicle-mounted drilling machine |
| CN207406274U (en) * | 2017-11-16 | 2018-05-25 | 恒天九五重工有限公司 | Stake machine equipment hydraulic speed-limiting system |
-
2017
- 2017-11-16 CN CN201711133709.9A patent/CN107795278B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005036870A (en) * | 2003-07-14 | 2005-02-10 | Nachi Fujikoshi Corp | Dual rotation type hydraulic pump device |
| JP2009167618A (en) * | 2008-01-11 | 2009-07-30 | Caterpillar Japan Ltd | Hydraulic circuit of hydraulic excavator |
| WO2012081201A1 (en) * | 2010-12-17 | 2012-06-21 | 川崎重工業株式会社 | Drive control method for operating machine |
| CN201943570U (en) * | 2010-12-30 | 2011-08-24 | 北京市三一重机有限公司 | Upper-part rotation speed-limiting device for rotary drilling rig |
| CN102979775A (en) * | 2012-11-16 | 2013-03-20 | 中联重科股份有限公司 | Engineering machinery and hydraulic control operation system thereof |
| WO2015035454A1 (en) * | 2013-09-13 | 2015-03-19 | Oilpath Hydraulics Pty Ltd | Hydraulic motor circuit |
| CN103527073A (en) * | 2013-10-23 | 2014-01-22 | 福田雷沃国际重工股份有限公司 | Rotation controlling hydraulic circuit system for rotary drilling rig |
| CN204549901U (en) * | 2014-12-31 | 2015-08-12 | 徐工集团工程机械股份有限公司 | A kind of digital gravity variable amplitude hydraulic system |
| CN205605209U (en) * | 2016-05-05 | 2016-09-28 | 湖南科技大学 | Multi -functional coal seam scour protection efflux drilling joint -cutting shower nozzle |
| CN106321541A (en) * | 2016-08-30 | 2017-01-11 | 中煤科工集团西安研究院有限公司 | Electric-hydraulic double-control hydraulic system and method for vehicle-mounted drilling machine |
| CN207406274U (en) * | 2017-11-16 | 2018-05-25 | 恒天九五重工有限公司 | Stake machine equipment hydraulic speed-limiting system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107795278B (en) | 2023-08-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2597211B1 (en) | Hydraulic excavator | |
| CN101723274B (en) | Main winch retracting and stretching control system of rotary drilling rig and rotary drilling rig | |
| CN202827716U (en) | Steering electro-hydraulic control system for remote-control loader | |
| CN202249733U (en) | Hydraulic device of drill | |
| CN108978775A (en) | It is a kind of based on the excavator of flywheel series parallel type mechanical mixture dynamical system | |
| CN202250029U (en) | Hydraulic control system for power head of rotary drilling jig and rotary drilling jig | |
| CN105156028B (en) | A kind of all-hydraulic multi-arm umbrella of Ioad-sensing control is bored and its method of work | |
| CN102996139B (en) | Hydraulic control system of drill loader | |
| CN104632794A (en) | Electro-hydraulic servo system of direct drive type hydraulic hoist | |
| CN106837946A (en) | A kind of stacker-reclaimer pitching hydraulic system, closed-loop control system and control method | |
| CN107061430A (en) | The hoisting system of minus flow hydraulic circuit control | |
| CN207406274U (en) | Stake machine equipment hydraulic speed-limiting system | |
| CN107700576B (en) | Kinetic potential energy recycling system of hydraulic excavator | |
| CN114604791B (en) | Power recovery system and power recovery method for hoisting mechanism of engineering machinery | |
| CN108978774A (en) | A kind of series-parallel hybrid electric system for excavator | |
| CN205277958U (en) | Dig hydraulic system of rig mast soon | |
| CN103397677B (en) | Based on hydraulic excavator movable arm loop and the control method thereof of hydraulic transformer | |
| CN112196848B (en) | Hydraulic control system of main driving torsion preventing device of shield tunneling machine | |
| CN110296111A (en) | A kind of hydraulic motor system, rotary drilling rig and application method | |
| CN102425401A (en) | Electro-hydraulic logic control loop of rock drilling actions of hydraulic rock drilling machine | |
| CN102392840B (en) | Ascending and descending control system for main elevator of rotary drilling machine | |
| CN109505812A (en) | A kind of variable pump bi-mode control hydraulic system and tunneling operation vehicle | |
| CN107524187B (en) | Hydraulic-electric hybrid recycling system for braking energy of rotary motion | |
| CN108953309A (en) | A kind of energy recovery and reuse hydraulic system | |
| CN205953386U (en) | Dig rig hoist actuating system soon |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |