CN106006416B - Fix the stepless luffing device of auxiliary and crane - Google Patents
Fix the stepless luffing device of auxiliary and crane Download PDFInfo
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- CN106006416B CN106006416B CN201610532154.4A CN201610532154A CN106006416B CN 106006416 B CN106006416 B CN 106006416B CN 201610532154 A CN201610532154 A CN 201610532154A CN 106006416 B CN106006416 B CN 106006416B
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- valve
- luffing
- power plant
- operating mode
- executing agency
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/82—Luffing gear
-
- 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
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a kind of stepless luffing device of fixed auxiliary and cranes, are related to technical field of engineering machinery.It solves the prior art and there is technical issues that fixed auxiliary implements that stepless luffing, the fretting performance of speed can not be implemented during luffing action.The stepless luffing device of fixation auxiliary includes luffing executing agency and power plant, and luffing executing agency is connected with fixed auxiliary；Power plant is connected with luffing executing agency and luffing executing agency can be driven to drive the stepless luffing operation of fixed auxiliary degree of losing no time.The crane includes the fixed stepless luffing device of auxiliary provided by the invention.The present invention is used to implement the stepless luffing of fixed auxiliary speed, improves the fretting performance of luffing action.
Description
Technical field
It should the present invention relates to technical field of engineering machinery more particularly to a kind of stepless luffing device of fixed auxiliary and setting
The crane of the stepless luffing device of fixed auxiliary.
Background technology
On modern crane tool, with the increase of tonnage, boom reach and weight are also constantly lengthening, therefore fixed joint
Arm becomes an important tool for lengthening boom reach.
Traditional fixation auxiliary may only realize the variation of 0 °, 15 ° and 30 ° amplitude in the prior art, narrow when encountering eminence
The space of mountain pass will be unable to realize lifting, finally be brought in place to user installation greatly difficult and dangerous.
For this purpose, the prior art provides a kind of system of the stepless luffing of fixed auxiliary, can be implemented by fixed auxiliary
The mode of angle stepless luffing action, which meets, fixes auxiliary and installs at any angle in narrow space.
As shown in Figure 1, the existing stepless changing-breadth system of fixed auxiliary using quantitative gear pump 51 to hydraulic system fuel feeding, be
The maximum pressure of system is determined that hydraulic oil is become by solenoid valve 53, hose reel 54 and balanced valve 55, final push by overflow valve 52
Width oil cylinder realizes the stepless luffing of fixed auxiliary angle.
Applicants have discovered that：At least there are following technical problems for the prior art：
The 1st, or gear pump is not oily to amplitude oil cylinder output hydraulic pressure or to amplitude oil cylinder output displacement in the prior art
(or be interpreted as：Flow) fixed hydraulic oil, since the flow of hydraulic oil is fixed, amplitude oil cylinder is caused to implement luffing action
During speed adjustable range it is relatively narrow, can not realize the stepless luffing of fixed auxiliary velocity of rotation, fretting performance is poor；
2nd, due to limitation of the overflow valve to system pressure, system pressure is caused to set low, oil cylinder radial dimension is big.
Invention content
At least one purpose of the present invention is to propose a kind of stepless luffing device of fixed auxiliary and set the fixation auxiliary
The crane of stepless luffing device solves the prior art and there is the nothing that can not implement speed during fixed auxiliary implementation luffing action
Grade luffing, the technical issues of fretting performance is poor.
Many technique effects that optimal technical scheme in many technical solutions provided by the invention can be generated refer to down
Text illustrates.
To achieve the above object, the present invention provides following technical schemes：
The stepless luffing device of fixed auxiliary provided in an embodiment of the present invention including luffing executing agency, fixed auxiliary and moves
Power apparatus, wherein:
The luffing executing agency is connected with the fixed auxiliary；The power plant and luffing executing agency phase
Even and the luffing executing agency can be driven to drive the stepless luffing operation of the fixed auxiliary degree of losing no time.
The optimization of technical solution, described after any technical solution provided above or hereinafter as the present invention or any optimization
Luffing executing agency is amplitude oil cylinder, and the power plant can pass through the hydraulic oil for amplitude oil cylinder output adjustable flow
Mode drives the amplitude oil cylinder.
The optimization of technical solution, described after any technical solution provided above or hereinafter as the present invention or any optimization
Power plant includes hydraulic pump and control valve, wherein：
The control valve is connected between the hydraulic pump and described amplitude oil cylinder the two and can control between the two
Whether hydraulic oil access is connected；The flow of the hydraulic oil of one of at least described hydraulic pump and the control valve output is adjustable
's.
The optimization of technical solution, described after any technical solution provided above or hereinafter as the present invention or any optimization
The lower limiting value of the flow adjustable extent of the hydraulic oil of power plant output is 0, and upper limit value turns the~260ml/ turns of (upper limits for 100ml/
Value is preferably that 190ml/ turns).
The optimization of technical solution, described after any technical solution provided above or hereinafter as the present invention or any optimization
Power plant is also connected with hoisting mechanism, and the power plant can also drive the hoisting mechanism to implement elevator operation.
Crane provided in an embodiment of the present invention, the stepless luffing of fixation auxiliary provided including any technical solution of the present invention
Device.
The optimization of technical solution after any technical solution provided above or hereinafter as the present invention or any optimization, this
Heavy-duty machine include hoisting mechanism and switching valve, the power plant by the switching valve simultaneously with the luffing executing agency with
And hoisting mechanism is connected；When the switching valve is in fixed auxiliary operating mode, the switching valve can be that the luffing performs machine
The adjustable hydraulic oil of structure output flow is to drive the luffing executing agency；
When the switching valve is in elevator operating mode, the switching valve can be the hoisting mechanism output hydraulic pressure oil to drive
The hoisting mechanism.
The optimization of technical solution, described after any technical solution provided above or hereinafter as the present invention or any optimization
Switching valve includes operating mode selector valve, elevator valve and luffing valve, wherein：
The elevator valve is connected on the oil circuit between the power plant and the hoisting mechanism and can control the oil circuit
Break-make；
The luffing valve is connected on the oil circuit between the power plant and the luffing executing agency and can control should
The break-make of oil circuit；
The operating mode selector valve be connected on the oil circuit between the hoisting mechanism and the power plant or fuel tank and
On oil circuit between the luffing executing agency and the power plant or fuel tank and the elevator valve and luffing valve can be controlled
The break-make of oil circuit where respectively.
The optimization of technical solution, described after any technical solution provided above or hereinafter as the present invention or any optimization
Elevator valve includes the first inserted valve and the second inserted valve, wherein:
First logical hydraulic fluid port of the power plant is connected with the first main hydraulic fluid port of first inserted valve；First inserting
Second main hydraulic fluid port of valve is connected with opening for the hoisting mechanism；
Second logical hydraulic fluid port of the power plant is connected with the first main hydraulic fluid port of second inserted valve；Second inserting
Second main hydraulic fluid port of valve is connected with the mouth that falls of the hoisting mechanism；
It can be by being in elevator operating mode after the control mouth parallel connection of both first inserted valve and second inserted valve
The operating mode selector valve be connected with fuel tank.
The optimization of technical solution, described after any technical solution provided above or hereinafter as the present invention or any optimization
Luffing valve includes shuttle valve, the first pilot operated valve device and the second pilot operated valve device, wherein：
One oil inlet of the shuttle valve is connected with the first logical hydraulic fluid port of the power plant and can also be by being in fixed
First pilot operated valve device of auxiliary operating mode is connected with the big chamber of the luffing executing agency；
Another oil inlet of the shuttle valve is connected with the second logical hydraulic fluid port of the power plant and can also be by being in solid
Second pilot operated valve device for determining auxiliary operating mode is connected with the small chamber of the luffing executing agency；
The oil outlet of the shuttle valve is connected by the operating mode selector valve with first pilot operated valve device and the second pilot operated valve device,
And the hydraulic oil by the oil outlet outflow of the shuttle valve can be entered by being in the operating mode selector valve of fixed auxiliary operating mode
First pilot operated valve device and the respective hydraulic control mouth of second pilot operated valve device simultaneously drive first pilot operated valve device and second liquid
Control valve switches to fixed auxiliary operating mode.
The optimization of technical solution, described after any technical solution provided above or hereinafter as the present invention or any optimization
Operating mode selector valve is also connected with first inserted valve and the second inserted valve, the hydraulic pressure flowed out by the oil outlet of the shuttle valve
Oil can also enter first inserted valve and second inserting by being in the operating mode selector valve of fixed auxiliary operating mode
The control mouth of both valves simultaneously drives first inserted valve and second inserted valve both to switch to cut-off state.
The optimization of technical solution, described after any technical solution provided above or hereinafter as the present invention or any optimization
Power plant further includes double linked one-way valve, and the switching valve is connected by the double linked one-way valve with fuel tank.
Based on above-mentioned technical proposal, the embodiment of the present invention can at least generate following technique effect：
In the stepless luffing device of fixed auxiliary provided by the invention operating personnel can as needed steering maneuver device it is real
The step-less adjustment of fixation auxiliary luffing movement speed that existing luffing executing agency is driven, when fixed auxiliary luffing movement speed can
The fine motion of luffing action, sensitivity can be significantly improved during realizing step-less adjustment, is existed admittedly so solving the prior art
Determine auxiliary implement that during luffing action the stepless luffing of speed can not be implemented, the technical issues of fretting performance is poor.
Description of the drawings
Attached drawing described herein is used to provide further understanding of the present invention, and forms the part of the application, this hair
Bright illustrative embodiments and their description do not constitute improper limitations of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is the schematic diagram for fixing the stepless changing-breadth system of auxiliary in the prior art；
Schematic diagrames of the Fig. 2 by fixing the stepless changing-breadth system of auxiliary in crane that the embodiment of the present invention provides；
The schematic diagram of the stepless luffing device of fixation auxiliary that Fig. 3 is provided by the embodiment of the present invention；
Reference numeral：1st, luffing executing agency；2nd, power plant；21st, switching valve；211st, operating mode selector valve；212nd, elevator
Valve；2121st, the first inserted valve；2122nd, the second inserted valve；213rd, luffing valve；2130th, shuttle valve；2131st, the first pilot operated valve device；2132、
Second pilot operated valve device；22nd, double linked one-way valve；3rd, fixed auxiliary；4th, hoisting mechanism；51st, quantitative gear pump；52nd, overflow valve；53rd, it is electric
Magnet valve；54th, hose reel；55th, balanced valve.
Specific embodiment
Be referred to attached drawing Fig. 1~Fig. 3 below and word content understand present disclosure and the present invention with it is existing
Distinctive points between technology.Hereafter attached drawing and by way of enumerating some alternative embodiments of the present invention, to the present invention's
Technical solution is described in further detail (including optimal technical scheme).It should be noted that：Any skill in the present embodiment
Art feature, any technical solution are one or more of the technical characteristic of plurality of optional or optional technical solution, in order to
Description it is succinct need all alternative technical characteristics of the present invention impossible to exhaust and alternative technical side in this document
Case, the embodiment for being also not easy to each technical characteristic emphasizes it as one of optional numerous embodiments, so this field
Technical staff should know：Any technological means provided by the invention can be replaced or by provided by the invention arbitrary two
A or more technological means or technical characteristic are combined obtain new technical solution mutually.Any skill in the present embodiment
Art feature and any technical solution do not limit the scope of the invention, and protection scope of the present invention should include this field
Technical staff does not make the creative labor the thinkable any alternate embodiments of institute and those skilled in the art will be of the invention
Any two of offer or more technological means or technical characteristic technical solution new obtained from being combined mutually.
An embodiment of the present invention provides one kind can realize the stepless luffing of angle, speed simultaneously, and fine motion is even more ideal, is
System pressure can design higher, and cylinder sizes can design the stepless luffing dress of fixation auxiliary smaller and that lift heavy performance is more excellent
Put and set the crane of the stepless luffing device of fixation auxiliary.
Technical solution provided by the invention is illustrated in more detail with reference to Fig. 2~Fig. 3.
As shown in Figure 2 to 3, the stepless luffing device of fixation auxiliary that the embodiment of the present invention is provided includes luffing and performs machine
Structure 1, fixed auxiliary 3 and power plant 2, wherein:
Luffing executing agency 1 is connected with fixed auxiliary 3；Power plant 2 is connected with luffing executing agency 1 and can drive change
Width executing agency 1, which drives, fixes the change that auxiliary 3 makees speed stepless (the stepless speed that refers to of speed can not change continuously, with being mutated)
Width operation.
In the stepless luffing device of fixed auxiliary provided by the invention operating personnel can as needed steering maneuver device 2 it is real
The step-less adjustment of 3 luffing movement speed of fixation auxiliary that existing luffing executing agency 1 is driven, when fixed 3 luffing of auxiliary action speed
When degree can be with step-less adjustment, the fine motion of luffing action, sensitivity can be significantly improved.
As optional embodiment, luffing executing agency 1 is amplitude oil cylinder, and power plant 2 can be by for amplitude oil cylinder
The mode for exporting the hydraulic oil of adjustable flow drives amplitude oil cylinder.Hydraulic oil drives small under the conditions of Same Efficieney, weight
Gently, therefore inertia is small, is active in one's movements, it can be achieved that frequent starting and commutation.
In addition, the present invention in order to export the hydraulic oil of adjustable displacement (or being interpreted as flow) when, such as without using overflow valve (when
So, overflow valve can also be used in preferred embodiment of the present invention), it can be to avoid overflow valve to the limit of system pressure in certain occasions
System, system pressure can set higher, and oil cylinder radial dimension can design smaller, and lift heavy performance can be even more ideal.
As optional embodiment, power plant 2 includes hydraulic pump and control valve, wherein：Control valve is connected to liquid
Between 1 the two of press pump and luffing executing agency and it can control whether hydraulic oil access between the two is connected；At least hydraulic pump
Flow with the hydraulic oil of one of control valve output is adjustable.Both power plant 2 can have been changed by hydraulic pump to becoming
The size of 1 output flow of width executing agency can also be changed by control valve to the big of 1 output flow of luffing executing agency
It is small, can also the size to 1 output flow of luffing executing agency be changed by hydraulic pump and control valve simultaneously.
The flow adjustable extent of hydraulic oil exported as optional embodiment, power plant 2 turns for 0~200ml/
(preferably 0~190ml/ turns).Existing gear pump discharge fixes and usually near 38ml/ turns.Adjustable flow of the present invention is more
Greatly, thus speed adjustable range is wider.
As optional embodiment, hydraulic pump is variable pump；And/or control valve is proportioning valve.Variable pump itself can be with
The adjustable hydraulic oil of output flow, it is to become that thus operating personnel, which can be pumped by performance variable arbitrarily to adjust power plant 2,
The size of the flow for the hydraulic oil that width executing agency 1 exports.Proportioning valve is that a kind of valve port can be with the hydraulic valve of continuous control, valve
Mouth can open any one aperture as needed, thus control the size by flow.
As optional embodiment, power plant 2 is also connected with hoisting mechanism 4, and power plant 2 can also drive elevator
Mechanism 4 implements elevator operation.Luffing executing agency 1 can be omitted newly added equipment band with a power plant 2 jointly with hoisting mechanism 4
The hardware cost and assembling, maintenance cost come, makes full use of existing device resource in engineering machinery.
As optional embodiment, control valve is load-sensitive reversal valve.Load-sensitive reversal valve tool in crane
There is good flow control performance, existing hoisting mechanism 4 just obtains power using load-sensitive reversal valve.
Crane provided in an embodiment of the present invention, the stepless luffing of fixation auxiliary provided including any technical solution of the present invention
Device.The stepless luffing device of fixed auxiliary provided by the invention is properly applied to crane or Other Engineering machinery to improve fixation
3 luffing operation speed adjustable range of auxiliary and fine motion.
As optional embodiment, which further includes hoisting mechanism 4 and switching valve 21, wherein：Power plant 2
It is connected simultaneously with luffing executing agency 1 and hoisting mechanism 4 by switching valve 21；
When switching valve 21 is in fixed auxiliary operating mode, switching valve 21 can be that 1 output flow of luffing executing agency is adjustable
Hydraulic oil is to drive luffing executing agency 1；
When switching valve 21 is in elevator operating mode, switching valve 21 can be 4 output hydraulic pressure oil of hoisting mechanism to drive hoist engine
Structure 4.
Power plant 2 itself due in prior art being 4 supply hydraulic fluid of crane hoisting mechanism has output flow
The function of adjustable hydraulic oil, so the present invention is idle in hoisting mechanism 4 using 4 existing power plant 2 of hoisting mechanism
In the case of for 1 fuel feeding of luffing executing agency, be omitted and be individually for the cost that luffing executing agency 1 is configured power plant 2 and brings,
It is possible thereby to make full use of existing device resource, effectively reduce cost.
Hydraulic fluid pressure in prior art for the output of the power plant 2 of 4 supply hydraulic fluid of crane hoisting mechanism is far high
In fixing the hydraulic fluid pressure in 3 stepless changing-breadth system of auxiliary in the prior art, so the radial dimension of luffing executing agency 1 can
To design smaller, the lift heavy performance of crane can design bigger.
As optional embodiment, switching valve 21 as shown in Figure 2 includes operating mode selector valve 211 as shown in Figure 3, elevator valve
212 and luffing valve 213, wherein：
Elevator valve 212 is connected on the oil circuit between power plant 2 and hoisting mechanism 4 and can control the break-make of the oil circuit；
Luffing valve 213 is connected on the oil circuit between power plant 2 and luffing executing agency 1 and can control the logical of the oil circuit
It is disconnected；
Operating mode selector valve 211 is connected on the oil circuit between hoisting mechanism 4 and power plant 2 or fuel tank and luffing performs
Oil circuit on oil circuit between mechanism 1 and power plant 2 or fuel tank and where elevator valve 212 and luffing valve 213 can be controlled respectively
Break-make.
When manipulating operating mode selector valve 211, operating mode selector valve 211 can be switched between fixed auxiliary operating mode and elevator operating mode
State, be that driving luffing executing agency 1 acts or hoist motor is driven to move to select the hydraulic oil that power plant 2 exports
Make.
As optional embodiment, elevator valve 212 as shown in Figure 3 includes the first inserted valve 2121 and the second inserted valve
2122, wherein:First logical hydraulic fluid port (A mouthfuls as shown in Figure 3) of power plant 2 and the first main hydraulic fluid port phase of the first inserted valve 2121
Even；Second main hydraulic fluid port of the first inserted valve 2121 is connected with opening for hoisting mechanism 4；
Second logical hydraulic fluid port (B mouthfuls as shown in Figure 3) of power plant 2 is connected with the first main hydraulic fluid port of the second inserted valve 2122；
Second main hydraulic fluid port of the second inserted valve 2122 is connected with the mouth that falls of hoisting mechanism 4；
It can be by being in elevator operating mode after the control mouth parallel connection of 2122 the two of the first inserted valve 2121 and the second inserted valve
Operating mode selector valve 211 be connected with fuel tank.
It is larger that hoisting mechanism 4 implements the The hydraulic oil that raising operation needs, and inserted valve latus rectum is larger is suitable for as elevator
4 supply hydraulic fluid of mechanism.
As optional embodiment, luffing valve 213 as shown in Figure 3 include shuttle valve 2130, the first pilot operated valve device 2131 and
Second pilot operated valve device 2132, wherein：One oil inlet of shuttle valve 2130 is connected and can also pass through with the first logical hydraulic fluid port of power plant 2
The first pilot operated valve device 2131 in fixed auxiliary operating mode is connected with the big chamber of luffing executing agency 1；
Another oil inlet of shuttle valve 2130 is connected with the second logical hydraulic fluid port of power plant 2 and can also be by being in fixed joint
Second pilot operated valve device 2132 of arm operating mode is connected with the small chamber of luffing executing agency 1；
The oil outlet of shuttle valve 2130 is connected with operating mode selector valve 211,211 and first pilot operated valve device 2131 of operating mode selector valve and
Second pilot operated valve device 2132 is connected, and the hydraulic oil by the oil outlet outflow of shuttle valve 2130 can be by being in fixed auxiliary operating mode
Operating mode selector valve 211 enters the first pilot operated valve device 2131 and 2132 respective hydraulic control mouth of the second pilot operated valve device and drives the first pilot operated valve device
2131 and second pilot operated valve device 2132 switch to fixed auxiliary operating mode.
Pilot operated valve device can utilize the switching of the pressure implementation state of hydraulic oil in system, thus can not only pass through control
Whether oil feeding line processed, which ends, to switch whether oil circuit end control luffing executing agency 1 by controlling working condition
Carry out luffing operation.
As optional embodiment, operating mode selector valve 211 is solenoid directional control valve.Solenoid directional control valve have it is easy to operate,
The advantages of being quick on the draw.
As optional embodiment, operating mode selector valve 211 as shown in Figure 3 is also inserted with the first inserted valve 2121 and second
It fills valve 2122 to be connected, the hydraulic oil flowed out by the oil outlet of shuttle valve 2130 can also be selected by being in the operating mode of fixed auxiliary operating mode
Select valve 211 enter the control mouth of both the first inserted valve 2121 and the second inserted valve 2122 and drive the first inserted valve 2121 with
And second inserted valve 2122 both switch to cut-off state.
When the first inserted valve 2121 and the second inserted valve 2122 both switch to cut-off state, power plant 2 is defeated
The hydraulic oil gone out can only drive luffing executing agency 1, thus fully ensure that luffing executing agency 1 has enough power to implement to become
Width operation.
As optional embodiment, crane further includes double linked one-way valve 22 as shown in Figure 3, and switching valve 21 passes through duplex
Check valve 22 is connected with fuel tank.Double linked one-way valve 22 plays the role of repairing, prevents stepless changing-breadth system from being made since repairing is insufficient
Into jitterbug.
Below in conjunction with the accompanying drawings 2, Fig. 3 elaborates the preferred technical solution of the present invention：
As shown in Fig. 2, switching valve 21 provided by the invention preferably shares seven hydraulic fluid ports, wherein A, B mouthful as shown in Figure 3 connects
Load-sensitive reversal valve delivery outlet is connect, A1, B1 are respectively communicated with the big chamber of stepless luffing executing agency 1 and small chamber, A2, B2 connect respectively
The He Luokou that opens of logical hoist motor, T are oil return opening, solenoid valve Y1 be elevator, stepless luffing operating mode switching valve 21.
When Y1 must not be electric, the working media of load-sensitive reversal valve output is entered by the inserted valve in switching valve 21
Hoist motor, raising and whereabouts so as to fulfill elevator operating mode；When Y1 is obtained it is electric when, from A or B mouthfuls input working media, pass through
Shuttle valve 2130 and two position, three-way electromagnetic change valve, that is, operating mode selector valve 211 have respectively entered the control of inserted valve and pilot operated directional control valve
Mouthful, inserted valve is closed at this time, and pilot operated directional control valve is in opening state, at this moment from the working media of A or B mouthfuls of input
It is entered in stepless luffing executing agency 1 by pilot operated directional control valve, and then realizes the stepless luffing operating mode of fixed auxiliary 3.
Theory is controlled using divided working status, power oil sources can be provided to crane hoisting and auxiliary oil cylinder respectively, pass through two
Three-way solenoid valve and shuttle valve 2130 realize the selection and switching of operating mode, meet and 3 any angle of auxiliary is fixed in narrow space
Installation, effectively realize the stepless luffing of fixed auxiliary 3, can meet the needs of large-scale engineering machinery, in addition, the present invention also
Have the advantages that integration degree it is high, it is versatile, be simple to manufacture and beauty be installed.
Any technical solution disclosed in the invention described above unless otherwise stated, if it discloses numberical ranges, then
Disclosed numberical range is preferred numberical range, it is any it should be appreciated by those skilled in the art：Preferred numberical range
The only obvious or representative numerical value of technique effect in many enforceable numerical value.It, can not since numerical value is more
Exhaustion, so the present invention just technical solution of the open component values to illustrate the present invention, also, the above-mentioned numerical value enumerated is not
The limitation to the invention protection domain should be formed.
If limiting parts if the words such as " first ", " second " are used herein, those skilled in the art should
This knows：The use of " first ", " second " is intended merely to facilitate in description and parts is distinguished as not having Stated otherwise
Outside, above-mentioned word has no special meaning.
Meanwhile if the invention described above discloses or relates to the parts or structural member of connection fastened to each other, then, except another
There is statement outer, be fixedly connected and can be understood as：Connection (such as being connected using bolt or screw) can be removedly fixed, it can also
It is interpreted as：It is non-removable to be fixedly connected with (such as riveting, welding), certainly, connection fastened to each other or integral structure
(such as being manufactured using casting technique is integrally formed) replaces (significantly can not be using except integrally formed technique).
In addition, the art for being used to represent position relationship or shape applied in any technical solution disclosed in the invention described above
Its meaning includes approximate with its, similar or close state or shape to language unless otherwise stated.Either component provided by the invention
Either assembled by multiple individual component parts, or the separate part that integrally formed technique manufactures.
In the description of the present invention if used term " " center ", " longitudinal direction ", " transverse direction ", "front", "rear", " left side ",
" right side ", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " etc., then the orientation or position relationship of above-mentioned term instruction are base
In orientation shown in the drawings or position relationship, it is for only for ease of the description present invention and simplifies description rather than instruction or imply
Signified equipment, mechanism, component or element must have specific orientation, with specific azimuth configuration and operation, therefore cannot
It is interpreted as limiting the scope of the invention.
Finally it should be noted that:The above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof；To the greatest extent
The present invention is described in detail with reference to preferred embodiments for pipe, those of ordinary skills in the art should understand that：Still
It can modify to the specific embodiment of the present invention or equivalent replacement is carried out to some technical characteristics；Without departing from this hair
The spirit of bright technical solution should all cover in the claimed technical solution range of the present invention.
Claims (8)
1. a kind of crane, which is characterized in that including the stepless luffing device of fixed auxiliary, hoisting mechanism (4) and switching valve
(21)；
The stepless luffing device of fixed auxiliary includes luffing executing agency (1), fixed auxiliary (3) and power plant (2),
In:
The luffing executing agency (1) is connected with the fixed auxiliary (3)；
The power plant (2) is connected with the luffing executing agency (1) and the luffing executing agency (1) can be driven to drive institute
It states fixed auxiliary (3) and makees the stepless luffing operation of speed；
The power plant (2) by the switching valve (21) and meanwhile with the luffing executing agency (1) and hoisting mechanism (4)
It is connected；When the switching valve (21) is in fixed auxiliary operating mode, the switching valve (21) can be the luffing executing agency
(1) the adjustable hydraulic oil of output flow is to drive the luffing executing agency (1)；
When the switching valve (21) is in elevator operating mode, the switching valve (21) can be the hoisting mechanism (4) output hydraulic pressure
Oil is to drive the hoisting mechanism (4)；
The switching valve (21) includes operating mode selector valve (211), elevator valve (212) and luffing valve (213), wherein：
The elevator valve (212) is connected on the oil circuit between the power plant (2) and the hoisting mechanism (4) and can control
The break-make of the oil circuit；
The luffing valve (213) is connected on the oil circuit between the power plant (2) and the luffing executing agency (1) and energy
Control the break-make of the oil circuit；
The operating mode selector valve (211) is connected to the oil circuit between the hoisting mechanism (4) and the power plant (2) or fuel tank
On the upper and oil circuit between the luffing executing agency (1) and the power plant (2) or fuel tank and the elevator can be controlled
The break-make of oil circuit where valve (212) and luffing valve (213) are respective；
The elevator valve (212) includes the first inserted valve (2121) and the second inserted valve (2122), wherein:
First logical hydraulic fluid port of the power plant (2) is connected with the first main hydraulic fluid port of first inserted valve (2121)；Described
Second main hydraulic fluid port of one inserted valve (2121) is connected with opening for the hoisting mechanism (4)；
Second logical hydraulic fluid port of the power plant (2) is connected with the first main hydraulic fluid port of second inserted valve (2122)；Described
Second main hydraulic fluid port of two inserted valves (2122) is connected with the mouth that falls of the hoisting mechanism (4)；
It can be by being in after the control mouth parallel connection of first inserted valve (2121) and second inserted valve (2122) the two
The operating mode selector valve (211) of elevator operating mode is connected with fuel tank.
2. crane according to claim 1, which is characterized in that the luffing executing agency (1) is amplitude oil cylinder, described
Power plant (2) can be driving the amplitude oil cylinder by way of the hydraulic oil of adjustable flow is exported for the amplitude oil cylinder.
3. crane according to claim 2, which is characterized in that the power plant (2) includes hydraulic pump and control
Valve, wherein：
The control valve is connected between the hydraulic pump and described amplitude oil cylinder the two and can control hydraulic pressure between the two
Whether oily access is connected；The flow of the hydraulic oil of one of at least described hydraulic pump and the control valve output is adjustable.
4. crane according to claim 3, which is characterized in that the flow of the hydraulic oil of power plant (2) output
The lower limiting value of adjustable extent is 0, and upper limit value turns~260ml/ turns for 100ml/.
5. crane according to claim 1, which is characterized in that the power plant (2) also with hoisting mechanism (4) phase
Even, and the power plant (2) can also drive the hoisting mechanism (4) to implement elevator operation.
6. crane according to claim 1, which is characterized in that the luffing valve (213) includes shuttle valve (2130), first
Pilot operated valve device (2131) and the second pilot operated valve device (2132), wherein：
One oil inlet of the shuttle valve (2130) is connected with the first logical hydraulic fluid port of the power plant (2) and can also be by being in
First pilot operated valve device (2131) of fixed auxiliary operating mode is connected with the big chamber of the luffing executing agency (1)；
Another oil inlet of the shuttle valve (2130) is connected with the second logical hydraulic fluid port of the power plant (2) and can also pass through place
It is connected in second pilot operated valve device (2132) of fixed auxiliary operating mode with the small chamber of the luffing executing agency (1)；
The oil outlet of the shuttle valve (2130) passes through the operating mode selector valve (211) and first pilot operated valve device (2131) and the
Two pilot operated valve devices (2132) are connected, and the hydraulic oil by the oil outlet outflow of the shuttle valve (2130) can be by being in fixed auxiliary
The operating mode selector valve (211) of operating mode enters first pilot operated valve device (2131) and second pilot operated valve device (2132) is respective
Hydraulic control mouth and first pilot operated valve device (2131) and second pilot operated valve device (2132) is driven to switch to fixed auxiliary operating mode.
7. crane according to claim 6, which is characterized in that the operating mode selector valve (211) is also inserted with described first
It fills valve (2121) and the second inserted valve (2122) is connected, the hydraulic oil flowed out by the oil outlet of the shuttle valve (2130) can also
First inserted valve (2121) and described second are entered by the operating mode selector valve (211) for being in fixed auxiliary operating mode
The control mouth of both inserted valves (2122) simultaneously drives first inserted valve (2121) and second inserted valve (2122) two
Person switches to cut-off state.
8. according to any cranes of claim 1-7, which is characterized in that the power plant (2) further includes duplex list
To valve (22), the switching valve (21) is connected by the double linked one-way valve (22) with fuel tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610532154.4A CN106006416B (en) | 2016-07-07 | 2016-07-07 | Fix the stepless luffing device of auxiliary and crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610532154.4A CN106006416B (en) | 2016-07-07 | 2016-07-07 | Fix the stepless luffing device of auxiliary and crane |
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| Publication Number | Publication Date |
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| CN106006416A CN106006416A (en) | 2016-10-12 |
| CN106006416B true CN106006416B (en) | 2018-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610532154.4A Active CN106006416B (en) | 2016-07-07 | 2016-07-07 | Fix the stepless luffing device of auxiliary and crane |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107740793A (en) * | 2017-11-28 | 2018-02-27 | 徐州重型机械有限公司 | A kind of crane luffing control valve |
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| CN102887447A (en) * | 2012-10-17 | 2013-01-23 | 中联重科股份有限公司 | Hydraulic control loop for amplitude-variable hydraulic cylinder, crane and amplitude-variable control method |
| CN203529750U (en) * | 2013-09-29 | 2014-04-09 | 徐州重型机械有限公司 | Control device capable of improving amplitude-varying falling speed of crane |
| CN104071709A (en) * | 2014-07-18 | 2014-10-01 | 徐州重型机械有限公司 | Fixed fly jib stepless amplitude-variation control system for crane and crane |
| CN104444816A (en) * | 2014-09-30 | 2015-03-25 | 中联重科股份有限公司 | Hydraulic control system of hoisting machinery and hoisting machinery |
| CN204434107U (en) * | 2015-01-30 | 2015-07-01 | 湖北帕菲特工程机械有限公司 | Truck-mounted crane electromagnetic remote controlled device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4988990B2 (en) * | 2001-01-29 | 2012-08-01 | 株式会社タダノ | Crane jib undulation controller |
| JP2012197835A (en) * | 2011-03-18 | 2012-10-18 | Takeuchi Seisakusho:Kk | Work machine |
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|---|---|---|---|---|
| CN102887447A (en) * | 2012-10-17 | 2013-01-23 | 中联重科股份有限公司 | Hydraulic control loop for amplitude-variable hydraulic cylinder, crane and amplitude-variable control method |
| CN203529750U (en) * | 2013-09-29 | 2014-04-09 | 徐州重型机械有限公司 | Control device capable of improving amplitude-varying falling speed of crane |
| CN104071709A (en) * | 2014-07-18 | 2014-10-01 | 徐州重型机械有限公司 | Fixed fly jib stepless amplitude-variation control system for crane and crane |
| CN104444816A (en) * | 2014-09-30 | 2015-03-25 | 中联重科股份有限公司 | Hydraulic control system of hoisting machinery and hoisting machinery |
| CN204434107U (en) * | 2015-01-30 | 2015-07-01 | 湖北帕菲特工程机械有限公司 | Truck-mounted crane electromagnetic remote controlled device |
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| CN106006416A (en) | 2016-10-12 |
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Address after: 221000 No.68, Gaoxin Road, Xuzhou Economic and Technological Development Zone, Xuzhou City, Jiangsu Province Patentee after: Xuzhou Heavy Machinery Co.,Ltd. Address before: 221004 No. 165 Copper Mountain Road, Jiangsu, Xuzhou Patentee before: Xuzhou Heavy Machinery Co.,Ltd. |