CN105253792B - Rotation control system for crane - Google Patents
Rotation control system for crane Download PDFInfo
- Publication number
- CN105253792B CN105253792B CN201510462597.6A CN201510462597A CN105253792B CN 105253792 B CN105253792 B CN 105253792B CN 201510462597 A CN201510462597 A CN 201510462597A CN 105253792 B CN105253792 B CN 105253792B
- Authority
- CN
- China
- Prior art keywords
- valve
- oil
- mouths
- control system
- rotary control
- 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 invention discloses a rotation control system for a crane and belongs to the field of offshore cranes. The rotation control system comprises a motor, a speed reducer and a main hydraulic pump. The speed reducer is installed on an output shaft of the motor. The rotation control system further comprises a two-position four-way reversing valve, a brake control valve set, a manual pump, a first stop valve, a second stop valve, a third stop valve, a fourth stop valve, a seventh stop valve and a spanner. Two oil openings of the seventh stop valve are communicated with an opening A and an opening B of the motor respectively. One end of the spanner is provided with a long force arm. The other end of the spanner is provided with an outer spline. The outer spline is matched with an inner spline hole formed in an input shaft of the speed reducer. According to the rotation control system, by means of the manual pump and the multiple stop valves, the crane can be driven by the manual pump to achieve emergency rotation under the circumstance that a power source of the crane is out of work.
Description
Technical field
The present invention relates to extra large work crane field, more particularly to a kind of rotary control system of crane.
Background technology
Crane typically has raising, luffing, three kinds of elemental motions of revolution, wherein, revolution action typically adopts hydraulic pressure horse
Up to reductor, the little gear of reductor and the bull gear engagement of pivoting support is driven, revolving support is driven to realize by reductor
Revolution.
Existing rotary control system includes：Motor, reductor, two position and four-way reversing valves and hydraulic pump, hydraulic pump goes out
Hydraulic fluid port is connected with the P mouths of two position and four-way reversing valves, and the A mouths and B mouths of two position and four-way reversing valves connect respectively with the A mouths and B mouths of motor
Logical, reductor is arranged on the output shaft of the motor.
During the present invention is realized, inventor has found that prior art at least has problems with：
In turning course, when power source catastrophic failure, hydraulic pump cannot work on, because rotary control system does not have
There is emergent revolute function so that crane can not continue to turn round in the case of without power source, the now load on crane
Then it is possible to be suspended in aerial immovable, reduces the security performance of crane.
The content of the invention
Without the crane with emergent revolute function in order to solve the problems, such as prior art, the embodiment of the present invention is provided
A kind of rotary control system of crane.The technical scheme is as follows：
Embodiments provide a kind of rotary control system of crane, including motor, subtracting with brake oil cylinder
Fast machine, two position and four-way reversing valves and Main Hydraulic Pump, the reductor is arranged on the output shaft of the motor, the Main Hydraulic Pump
Oil-out connect with the P mouths of two position and four-way reversing valve, the A mouths of two position and four-way reversing valve and the A mouths of the motor
Connection, the B mouths of the motor are connected with the B mouths of two position and four-way reversing valve, the T mouths and fuel tank of two position and four-way reversing valve
Connection.
The rotary control system also includes：Brake control valve group, manual pump, the first stop valve, the second stop valve, the 3rd
Stop valve, the 4th stop valve, the 7th stop valve and spanner.
The brake control valve group include the first shuttle valve, pressure-reducing valve, two-bit triplet reversal valve, the 5th stop valve, the 6th section
Only valve and the 3rd choke valve, the A mouths of two position and four-way reversing valve are connected with the oil-feed A mouths of first shuttle valve, and described first
The oil-feed B mouths of shuttle valve are connected with the B mouths of two position and four-way reversing valve, oil-out and the pressure-reducing valve of first shuttle valve
Oil-in is connected, the oil-out of the pressure-reducing valve respectively with the hydraulic pilot mouth of the two-bit triplet reversal valve and described two three
The P mouths connection of logical reversal valve, the Y mouths of the two-bit triplet reversal valve are connected with the fuel tank, the X of the two-bit triplet reversal valve
Mouthful connect with the oil-in of the 5th stop valve, the oil-out of the 5th stop valve goes out respectively with the 6th stop valve
Hydraulic fluid port is connected with the oil-in of the 3rd choke valve, the oil-out of the 3rd choke valve and the rod chamber of the brake oil cylinder
Connection.
The oil-out of the manual pump is also connected with the oil-in of first stop valve, first stop valve it is fuel-displaced
Mouth is connected with the A mouths of the motor, and the B mouths of the motor are connected with the oil-in of the 4th stop valve, the 4th cut-off
The oil-out of valve is connected with the fuel tank；The oil-out of the manual pump is also connected with the oil-in of the 3rd stop valve, institute
State the oil-out of the 3rd stop valve to connect with the B mouths of the motor, the oil-in of the A mouths of the motor and second stop valve
Connection, the oil-out of second stop valve is connected with the fuel tank；The oil-out of the manual pump also ends with the described 6th
The oil-in connection of valve.
Specifically, the rotary control system also includes the 7th stop valve and spanner, two oil of the 7th stop valve
Mouth is connected respectively with the A mouths of the motor and the B mouths of the motor, and one end of the spanner is provided with the long arm of force, the spanner
The other end be provided with external splines, the external splines be provided with internal splined hole on the input shaft of the reductor and be engaged.
Specifically, the rotary control system also includes the second shuttle valve, oil-feed A mouths of second shuttle valve and described two
The A mouths connection of four-way change-over valve, the oil-feed B mouths of second shuttle valve connect with the B mouths of two position and four-way reversing valve, and described the
The oil-out of two shuttle valves is connected with the feedback port of the Main Hydraulic Pump.
Specifically, the rotary control system also include the second check valve, the oil-in of second check valve with it is described
The oil-out connection of Main Hydraulic Pump, the oil-out of second check valve is connected with the P mouths of two position and four-way reversing valve.
Further, the rotary control system also includes the first overflow valve, the oil-in of first overflow valve and institute
The oil-out connection of the second check valve is stated, the oil-out of first overflow valve is connected with the fuel tank.
Specifically, the rotary control system also includes emergency pump, the oil-out of the emergency pump and two four-ways
The A mouths connection of reversal valve.
Further, the rotary control system also includes the 3rd check valve, the oil-in of the 3rd check valve and institute
The oil-out connection of emergency pump is stated, the oil-out of the 3rd check valve is connected with the P mouths of two position and four-way reversing valve.
Specifically, the rotary control system also include balance valve group, the balance valve group include the first balanced valve, second
Balanced valve, the second overflow valve and the 3rd overflow valve, the A mouths of two position and four-way reversing valve enter respectively with first balanced valve
Hydraulic fluid port is connected with the pilot port of second balanced valve, the pilot port of first balanced valve and two position and four-way reversing valve
B mouths are connected, the oil-out of first balanced valve respectively with the A mouths of the motor, the oil-in of second overflow valve and institute
The oil-in connection of the 3rd overflow valve is stated, the oil-out of second overflow valve is connected with the B mouths of two position and four-way reversing valve,
The oil-in of second balanced valve is connected with the B mouths of two position and four-way reversing valve, the oil-out of second balanced valve with
The B mouths connection of the motor, the oil-out of the 3rd overflow valve is connected with the oil-out of second balanced valve, and the described 3rd
The pilot port of overflow valve is connected with the fuel tank.
Further, the rotary control system also includes first throttle valve and second throttle, the first throttle valve
On oil circuit between the pilot port of first balanced valve and the oil-in of second balanced valve, second throttling
Valve is arranged on the oil circuit between the pilot port of second balanced valve and the oil-in of first balanced valve.
Specifically, the rotary control system also include the 4th overflow valve, the oil-in of the 4th overflow valve with it is described
The oil-out connection of manual pump, the oil-out of the 4th overflow valve is connected with the fuel tank.
The beneficial effect that technical scheme provided in an embodiment of the present invention is brought is：Crane provided in an embodiment of the present invention
Rotary control system, manually pump and multiple stop valves, after Main Hydraulic Pump runs out of steam source, close the 5th and end
Valve, opens the 6th stop valve, starts manual pump, and hydraulic oil opens the brake oil cylinder of reductor, when crane needs to return to the left
Turn, open the first stop valve and the 4th stop valve, shake manual pump, the hydraulic oil that manual pump is provided is directly entered the A mouths of motor
Or B mouths, drive motor, reductor and crane turn left or turn right, and when loading larger, manual pump can only be opened and subtracted
The brake oil cylinder of fast machine, then can open the 7th normally closed stop valve, and at this moment the A mouths and B mouths of motor is interconnected, and makes motor
In quick condition, motor and reductor are separated, spanner is stretched in internal splined hole, will be defeated by the long arm of force of rotary spanner
Enter moment amplification, realize the emergent revolute function of crane.
Description of the drawings
Technical scheme in order to be illustrated more clearly that the embodiment of the present invention, below will be to making needed for embodiment description
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, can be obtaining other according to these accompanying drawings
Accompanying drawing.
Fig. 1 is the schematic diagram of control system provided in an embodiment of the present invention；
Fig. 2 is the structural representation of spanner provided in an embodiment of the present invention；
Fig. 3 is the fit structure schematic diagram of spanner provided in an embodiment of the present invention and internal splined hole.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to embodiment party of the present invention
Formula is described in further detail.
Embodiment
A kind of rotary control system of crane is embodiments provided, as shown in figure 1, the rotary control system bag
Motor 1, the reductor 3 with brake oil cylinder 2, two position and four-way reversing valves 5 and Main Hydraulic Pump 4 are included, reductor 3 is arranged on motor 1
Output shaft on, the rotary control system also includes：Brake control valve group, manual pump 6, the first stop valve 7, the second stop valve 8,
3rd stop valve 9 and the 4th stop valve 10, the oil-out of Main Hydraulic Pump 4 is connected with the P mouths of two position and four-way reversing valves 5, two four
The A mouths of logical reversal valve 5 are connected with the A mouths of motor 1, and the B mouths of motor 1 are connected with the B mouths of two position and four-way reversing valves 5, two four-ways
The T mouths of reversal valve 5 are connected with fuel tank 17, wherein, the first stop valve 7, the second stop valve 8, the 3rd stop valve 9 and the 4th stop valve
10 is normally closed cut-off valve.The P mouths of two position and four-way reversing valves 5 are the oil-in being connected with pump, and the T mouths of two position and four-way reversing valves 5 are
The oil return opening connected with fuel tank 17.
Brake control valve group include the first shuttle valve 11, pressure-reducing valve 12, two-bit triplet reversal valve 13, the 5th stop valve 14, the
Six stop valves 15 and the 3rd choke valve 16a, the A mouths of two position and four-way reversing valves 5 are connected with the oil-feed A mouths of the first shuttle valve 11, and first
The oil-feed B mouths of shuttle valve 11 are connected with the B mouths of two position and four-way reversing valves 5, the oil-out of the first shuttle valve 11 and the oil-feed of pressure-reducing valve 12
Mouthful connection, the oil-out of pressure-reducing valve 12 respectively with the hydraulic pilot mouth 13a and two-bit triplet reversal valve of two-bit triplet reversal valve 13
13 P mouths connection, the Y mouths of two-bit triplet reversal valve 13 are connected with fuel tank 17, and the X mouths of two-bit triplet reversal valve 13 and the 5th end
The oil-in connection of valve 14, the oil-out of the 5th stop valve 14 respectively with the oil-out and the 3rd choke valve of the 6th stop valve 15
The oil-in connection of 16a, the oil-out of the 3rd choke valve 16a is connected with the rod chamber of brake oil cylinder 2.Wherein, the 5th stop valve
14 is normally opened stop valve, and the 6th stop valve 15 is normally closed cut-off valve.
The oil-out of manual pump 6 is also connected with the oil-in of the first stop valve 7, oil-out and the motor 1 of the first stop valve 7
The connection of A mouths, the B mouths of motor 1 connect with the oil-in of the 4th stop valve 10, and oil-out and the fuel tank 17 of the 4th stop valve 10 connect
It is logical；The oil-out of manual pump 6 is also connected with the oil-in of the 3rd stop valve 9, the oil-out of the 3rd stop valve 9 and the B mouths of motor 1
Connection, the A mouths of motor 1 are connected with the oil-in of the second stop valve 8, and the oil-out of the second stop valve 8 is connected with fuel tank 17；Manually
The oil-out of pump 6 is also connected with the oil-in of the 6th stop valve 15.
Referring to Fig. 1, rotary control system also includes the 7th stop valve 18 and spanner 19, two hydraulic fluid ports of the 7th stop valve 18
Connect with the A mouths of motor 1 and the B mouths of motor 1 respectively.Fig. 2 shows the structural representation of spanner 19, and Fig. 3 shows spanner 19
With the fit structure schematic diagram of internal splined hole 19a, as shown in Figures 2 and 3, one end of spanner 19 is provided with long arm of force 19a, spanner
19 other end is provided with external splines 19b, and external splines 19b is engaged with the internal splined hole 3a arranged on the input shaft of reductor 3.
Specifically, rotary control system can also include the second shuttle valve 20, the oil-feed A mouths of the second shuttle valve 20 and two four-ways
The A mouths connection of reversal valve 5, the oil-feed B mouths of the second shuttle valve 20 connect with the B mouths of two position and four-way reversing valves 5, and the second shuttle valve 20 goes out
Hydraulic fluid port is connected with the feedback port of Main Hydraulic Pump 4.Second shuttle valve 20 feeds back in the hydraulic oil flowed out by two position and four-way reversing valves 5
Main Hydraulic Pump 4, the output flow and pressure and load for enabling Main Hydraulic Pump 4 is adapted, and reduces energy loss.
Specifically, rotary control system can also include the second check valve 21, oil-in and the main liquid of the second check valve 21
The oil-out connection of press pump 4, the oil-out of the second check valve 21 is connected with the P mouths of two position and four-way reversing valves 5.Second check valve
21 are prevented from hydraulic oil is flowed back in Main Hydraulic Pump 4 by the oil-out direction of the second check valve 21.In other embodiments, this
Two check valves 21 could alternatively be stop valve, but stop valve is in emergency situations, may be because operator is by mistake by stop valve
The oil circuit at place is closed, and control system is damaged because the pressure of inside is excessive, and the second check valve 21 be opened without the need for manually control
Open, the maloperation of operator can be avoided.
Further, rotary control system can also include the first overflow valve 22, the oil-in of the first overflow valve 22 and the
The oil-out connection of two check valves 21, the oil-out of the first overflow valve 22 is connected with fuel tank 17.First overflow valve 22 can be prevented
The hydraulic fluid pressure that only Main Hydraulic Pump 4 flows out is excessive, wherein, the rated pressure of the first overflow valve 22 could be arranged to 32MPa.
Specifically, rotary control system can also include emergency pump 23, the oil-out of emergency pump 23 and two four-way commutations
The A mouths connection of valve 5.Emergency pump 23 can be driven by emergency motor 24, and Main Hydraulic Pump 4 is driven by main motor 25, when
During 25 catastrophic failure of main motor, in the case of load is less, emergency motor 24 can be started and worked, but, this is met an urgent need
The emergency power supply finite capacity of motor 24, generally, the rated power of emergency motor 24 is less than main motor
The 5%～10% of 25 rated power, after starting emergency motor 24, the rotating speed of motor 1 and reductor 3 is the 5% of rated speed
～10%, realize revolution of meeting an urgent need at a slow speed.
Further, rotary control system can also include the 3rd check valve 26, the oil-in of the 3rd check valve 26 with should
The oil-out connection of anxious pump 23, the oil-out of the 3rd check valve 26 is connected with the P mouths of two position and four-way reversing valves 5.3rd is unidirectional
Valve 26 is prevented from hydraulic oil and is flowed back in emergency pump 23 by the oil-out direction of the 3rd check valve 26.In other embodiments, should
3rd check valve 26 could alternatively be stop valve, but stop valve is in emergency situations, may will end by mistake because of operator
The oil circuit that valve is located is closed, and control system is damaged because the pressure of inside is excessive, and the 3rd check valve 26 is without the need for manually control
Open, the maloperation of operator can be avoided.
Specifically, rotary control system can also include balance valve group, and balance valve group includes that the second overflow valve the 27, the 3rd overflows
Stream valve 28, the first balanced valve 29 and the second balanced valve 30, the A mouths of two position and four-way reversing valves 5 enter respectively with the first balanced valve 29
The pilot port connection of hydraulic fluid port and the second balanced valve 30, the pilot port of the first balanced valve 29 connects with the B mouths of two position and four-way reversing valves 5
It is logical, the oil-out of the first balanced valve 29 A mouths respectively with motor 1, the oil-in of the second overflow valve 27 and the 3rd overflow valve 28
Oil-in is connected, and the oil-out of the second overflow valve 27 is connected with the B mouths of two position and four-way reversing valves 5, the oil-feed of the second balanced valve 30
Mouth is connected with the B mouths of two position and four-way reversing valves 5, and the oil-out of the second balanced valve 30 is connected with the B mouths of motor 1, the 3rd overflow valve
28 oil-out is connected with 30 oil-outs of the second balanced valve, and the pilot port of the 3rd overflow valve 28 is connected with fuel tank 17.Second overflows
Equal and pressure-reducing valve 12 the pilot port of pilot port of the stream overflow valve 28 of valve 27 and the 3rd and the Y mouths of two-bit triplet reversal valve 13 connect
It is logical.The balance valve group can be in balance control system pressure and flow.
Further, rotary control system can also include first throttle valve 31 and second throttle 32, first throttle valve
31 are arranged on the oil circuit between the pilot port of the first balanced valve 29 and the oil-in of the second balanced valve 30, and second throttle 32 is pacified
It is mounted on the oil circuit between the oil-in of the pilot port of the second balanced valve 30 and the first balanced valve 29.The first throttle valve 31 and
Two choke valves 32 are respectively used to control the flow of its place oil circuit.
Specifically, rotary control system can also include the 4th overflow valve 33, the oil-in of the 4th overflow valve 33 with it is manual
The oil-out connection of pump 6, the oil-out of the 4th overflow valve 33 is connected with fuel tank 17.
Specifically, rotary control system can also include first check valve 16 in parallel with the 3rd choke valve 16a, and first is single
Connect with the oil-out of the 3rd choke valve 16a to the oil-in of valve 16, the oil-out and the 3rd choke valve 16a of the first check valve 16
Oil-in connection.
The operation principle of control system provided in an embodiment of the present invention is following is a brief introduction of, it is specific as follows：
In normal state, Main Hydraulic Pump 4 provides the P mouths that hydraulic oil flows through two position and four-way reversing valves 5, is changed by two four-ways
To the A mouths or B mouths of valve 5, the A mouths or B mouths of motor 1 are flowed into, realize the rotation of motor 1 and reductor 3.Wherein, by two four-ways
Some correspondence flows into the oil-feed A mouths or oil-feed B mouths of the first shuttle valve 11 in the hydraulic oil that the A mouths of reversal valve 5 or B mouths flow out,
Flowed out by the oil-out of the first shuttle valve 11 again, flow into the oil-in of pressure-reducing valve 12, then the liquid flowed out by the oil-out of pressure-reducing valve 12
Respectively stream arrives the hydraulic pilot mouth 13a of two-bit triplet reversal valve 13 and the P mouths of two-bit triplet reversal valve 13 to force feed, at two three
In the presence of the hydraulic pilot mouth 13a of logical reversal valve 13, two-bit triplet reversal valve 13 is made in right position, flow to two-bit triplet commutation
The hydraulic oil of the P mouths of valve 13 is flowed out by the X mouths of two-bit triplet reversal valve 13, and through the 5th stop valve 14 the first check valve is flowed through
16, the rod chamber of brake oil cylinder 2 is flow to, for controlling brake oil cylinder 2.
After Main Hydraulic Pump 4 runs out of steam source, the 5th stop valve 14 is closed, open the 6th stop valve 15, started manual
Pump 6, hydraulic oil opens the brake oil cylinder 2 of reductor 3, when crane needs to turn round to the left, opens the first stop valve 7 and the 4th
Stop valve 10, shakes manual pump 6, and the hydraulic oil that manual pump 6 is provided is directly entered the A mouths (left side actuator port) of motor 1, motor
1 B mouths (right side actuator port) oil return, drive motor 1, reductor 3 and crane are turned left；If crane needs to the right
During revolution, the second stop valve 8 and the 3rd stop valve 9 are opened, shake manual pump 6, the hydraulic oil that manual pump 6 is provided is directly entered horse
Up to 1 B mouths, the A mouth oil returns of motor, drive motor 1, reductor 3 and crane are turned right.When loading larger, manual pump 6
The brake oil cylinder 2 of reductor 3 can be only opened, and when whole crane cannot be driven to be turned round, the 5th cut-off can be closed
Valve 14, opens the 6th stop valve 15, starts manual pump 6, and hydraulic oil is flowed out by the oil-out of manual pump 6, is flowed into two-bit triplet and is changed
To the Y mouths of valve 13, flowed out by the X mouths of two-bit triplet reversal valve 13 and flow through after the 6th stop valve 15, flow into having for brake oil cylinder 2
In rod cavity, brake oil cylinder 2 is opened；The 7th normally closed stop valve 18 is opened again, at this moment the A mouths of motor 1 are mutually interconnected with B mouths
It is logical, make motor 1 in quick condition, motor 1 and reductor 3 are separated, spanner 19 is stretched in internal splined hole 3a, by rotation
The long arm of force 19a of spanner 19 amplifies input torque, realizes the revolute function of crane.
The rotary control system of crane provided in an embodiment of the present invention, manually pump and multiple stop valves, are leading
Hydraulic pump runs out of steam after source, closes the 5th stop valve, opens the 6th stop valve, starts manual pump, and hydraulic oil is by reductor
Brake oil cylinder open, when crane needs to turn round to the left, open the first stop valve and the 4th stop valve, shake manual pump, hand
The hydraulic oil that dynamic pump is provided is directly entered the A mouths or B mouths of motor, and drive motor, reductor and crane are turned left or to the right
Turn, when loading larger, manual pump can only open the brake oil cylinder of reductor, then can beat the 7th normally closed stop valve
Open, at this moment the A mouths and B mouths of motor is interconnected, make motor in quick condition, motor and reductor are separated, spanner is stretched
Enter in internal splined hole, amplified input torque by the long arm of force of rotary spanner, realize the emergent revolute function of crane.
The foregoing is only presently preferred embodiments of the present invention, not to limit the present invention, all spirit in the present invention and
Within principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (10)
1. a kind of rotary control system of crane, including motor, the reductor with brake oil cylinder, two position and four-way reversing valves and
Main Hydraulic Pump, the reductor be arranged on the motor output shaft on, the oil-out of the Main Hydraulic Pump with described two four
The P mouths connection of logical reversal valve, the A mouths of two position and four-way reversing valve connects with the A mouths of the motor, the B mouths of the motor and
The B mouths connection of two position and four-way reversing valve, the T mouths of two position and four-way reversing valve are connected with fuel tank, it is characterised in that
The rotary control system also includes：Brake control valve group, manual pump, the first stop valve, the second stop valve, the 3rd cut-off
Valve, the 4th stop valve, the 7th stop valve and spanner；
The brake control valve group includes the first shuttle valve, pressure-reducing valve, two-bit triplet reversal valve, the 5th stop valve, the 6th stop valve
With the 3rd choke valve, the A mouths of two position and four-way reversing valve connect with the oil-feed A mouths of first shuttle valve, first shuttle valve
Oil-feed B mouths connect with the B mouths of two position and four-way reversing valve, the oil-out of first shuttle valve and the oil-feed of the pressure-reducing valve
Mouth connection, the oil-out of the pressure-reducing valve is changed respectively with the hydraulic pilot mouth and the two-bit triplet of the two-bit triplet reversal valve
Connect to the P mouths of valve, the Y mouths of the two-bit triplet reversal valve connects with the fuel tank, the X mouths of the two-bit triplet reversal valve and
The oil-in connection of the 5th stop valve, the oil-out of the 5th stop valve respectively with the oil-out of the 6th stop valve
Connect with the oil-in of the 3rd choke valve, the oil-out of the 3rd choke valve connects with the rod chamber of the brake oil cylinder
It is logical；
The oil-out of the manual pump is also connected with the oil-in of first stop valve, the oil-out of first stop valve with
The A mouths connection of the motor, the B mouths of the motor are connected with the oil-in of the 4th stop valve, the 4th stop valve
Oil-out is connected with the fuel tank；The oil-out of the manual pump is also connected with the oil-in of the 3rd stop valve, and described
The oil-out of three stop valves is connected with the B mouths of the motor, and the A mouths of the motor connect with the oil-in of second stop valve
Logical, the oil-out of second stop valve is connected with the fuel tank；The oil-out of the manual pump also with the 6th stop valve
Oil-in connection；
Two hydraulic fluid ports of the 7th stop valve are connected respectively with the A mouths of the motor and the B mouths of the motor, the spanner
One end is provided with the long arm of force, and the other end of the spanner is provided with external splines, the input shaft of the external splines and the reductor
On be provided with internal splined hole and be engaged.
2. rotary control system according to claim 1, it is characterised in that the rotary control system also includes the second shuttle
Valve, the oil-feed A mouths of second shuttle valve are connected with the A mouths of two position and four-way reversing valve, the oil-feed B mouths of second shuttle valve with
The B mouths connection of two position and four-way reversing valve, the oil-out of second shuttle valve is connected with the feedback port of the Main Hydraulic Pump.
3. rotary control system according to claim 1, it is characterised in that the rotary control system also includes that second is single
To valve, the oil-in of second check valve is connected with the oil-out of the Main Hydraulic Pump, the oil-out of second check valve
Connect with the P mouths of two position and four-way reversing valve.
4. rotary control system according to claim 3, it is characterised in that the rotary control system is also overflow including first
Stream valve, the oil-in of first overflow valve connects with the oil-out of second check valve, first overflow valve it is fuel-displaced
Mouth is connected with the fuel tank.
5. rotary control system according to claim 1, it is characterised in that the rotary control system also includes emergent
Pump, the oil-out of the emergency pump is connected with the A mouths of two position and four-way reversing valve.
6. rotary control system according to claim 5, it is characterised in that the rotary control system also includes that the 3rd is single
To valve, the oil-in of the 3rd check valve is connected with the oil-out of the emergency pump, the oil-out of the 3rd check valve with
The P mouths connection of two position and four-way reversing valve.
7. rotary control system according to claim 1, it is characterised in that the rotary control system also includes balanced valve
Group, the balance valve group includes the first balanced valve, the second balanced valve, the second overflow valve and the 3rd overflow valve, two four-ways
The A mouths of reversal valve are connected respectively with the oil-in of first balanced valve and the pilot port of second balanced valve, and described first
The pilot port of balanced valve is connected with the B mouths of two position and four-way reversing valve, the oil-out of first balanced valve respectively with it is described
The A mouths of motor, the oil-in of second overflow valve are connected with the oil-in of the 3rd overflow valve, second overflow valve
Oil-out is connected with the B mouths of two position and four-way reversing valve, and the oil-in of second balanced valve commutates with two four-ways
The B mouths connection of valve, the oil-out of second balanced valve is connected with the B mouths of the motor, the oil-out of the 3rd overflow valve
Connect with the oil-out of second balanced valve, the pilot port of the 3rd overflow valve is connected with the fuel tank.
8. rotary control system according to claim 7, it is characterised in that the rotary control system also includes first segment
Stream valve and second throttle, the first throttle valve is arranged on the pilot port and second balanced valve of first balanced valve
On oil circuit between oil-in, the second throttle is arranged on the pilot port and first balanced valve of second balanced valve
Oil-in between oil circuit on.
9. rotary control system according to claim 1, it is characterised in that the rotary control system also includes that the overflows
Stream valve, the oil-in of the 4th overflow valve connect with the oil-out of the manual pump, the oil-out of the 4th overflow valve and
The fuel tank connection.
10. rotary control system according to claim 1, it is characterised in that the rotary control system also includes and institute
The 3rd choke valve the first check valve in parallel is stated, the oil-in of first check valve connects with the oil-out of the 3rd choke valve
Logical, the oil-out of first check valve is connected with the oil-in of the 3rd choke valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510462597.6A CN105253792B (en) | 2015-07-31 | 2015-07-31 | Rotation control system for crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510462597.6A CN105253792B (en) | 2015-07-31 | 2015-07-31 | Rotation control system for crane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105253792A CN105253792A (en) | 2016-01-20 |
| CN105253792B true CN105253792B (en) | 2017-05-10 |
Family
ID=55093799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510462597.6A Active CN105253792B (en) | 2015-07-31 | 2015-07-31 | Rotation control system for crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105253792B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107169254B (en) * | 2017-07-21 | 2020-04-28 | 济南大学 | Method for evaluating performance and predicting residual life of rotary system of automobile crane |
| CN108019387B (en) * | 2017-12-01 | 2019-12-06 | 三一重型装备有限公司 | Control oil way, cable winding device and heading machine |
| CN108706463B (en) * | 2018-06-21 | 2020-03-31 | 武汉船用机械有限责任公司 | Hydraulic control system of crane |
| CN110043524B (en) * | 2019-03-01 | 2020-08-11 | 武汉船用机械有限责任公司 | Rotary hydraulic system and hoisting equipment |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2600009B2 (en) * | 1990-04-25 | 1997-04-16 | 株式会社神戸製鋼所 | Crane turning control device |
| CN2693547Y (en) * | 2004-03-26 | 2005-04-20 | 徐州重型机械厂 | Hand operated emergency turning gear |
| CN102336370B (en) * | 2010-07-26 | 2013-02-13 | 徐州重型机械有限公司 | Rotating hydraulic system of crane and control method thereof |
| CN202785410U (en) * | 2012-09-06 | 2013-03-13 | 德瑞斯博海机械设备（大连）有限公司 | Manual turning device used after current failure of loop wheel machine |
| CN203998744U (en) * | 2014-05-26 | 2014-12-10 | 武汉船用机械有限责任公司 | The emergency release of hoisting crane |
-
2015
- 2015-07-31 CN CN201510462597.6A patent/CN105253792B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105253792A (en) | 2016-01-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105253792B (en) | Rotation control system for crane | |
| US10822211B2 (en) | Crane hydraulic control system and crane | |
| CN201581431U (en) | Loader load sensitization hydraulic device | |
| CN102979133A (en) | Rotary brake energy recycling device of hydraulic excavator | |
| CN104030163B (en) | A kind of all-hydraulic crane low energy consumption peculiar to vessel and low heating constant-voltage system | |
| CN107117534B (en) | A kind of hydraulic control system of crane | |
| CN108706463A (en) | A kind of hydraulic control system of crane | |
| CN102733442A (en) | Gyration energy recycling system of hydraulic excavator | |
| CN105951703A (en) | Hydraulic system for gear and rack type lifting mechanism | |
| CN102877783B (en) | Rotary drilling rig and hydraulic rotation system thereof | |
| CN108179781A (en) | Loader hydraulic control system | |
| CN105621294A (en) | Hydraulically-controlled operation dual-variable-amplitude synchronous adjustment control valve group | |
| CN105465077B (en) | A kind of hydraulic system of rack-and-pinion lifting device | |
| CN110778551A (en) | Full-closed hydraulic system of crane | |
| CN204553386U (en) | The control valve of proportional multi-way valve, control connection, proportional multi-way valve and hoist | |
| CN109534166B (en) | Control oil circuit and engineering machinery | |
| CN104176664A (en) | Hydraulic system for preventing forward running of telescopic arm of crane and crane | |
| CN107299655A (en) | A kind of swing arm decrease speed control loop of excavator | |
| CN202832191U (en) | Rotary excavating drilling machine and slewing hydraulic system thereof | |
| CN107524648A (en) | A kind of closed type energy-saving loop of excavator swing arm | |
| CN104613041B (en) | Variable cycloid hydraulic motor | |
| CN105439018B (en) | Revolution hydraulic control system and crane with sectional control function | |
| CN105060137B (en) | A kind of hoisting system of crawler crane without explosion-proof valve | |
| CN104074824B (en) | A kind of stall proof Fill valve, winch motor hydraulic control system and crane | |
| CN207905007U (en) | Loader hydraulic control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |