CN208816423U - Hoist motor feeds hydraulic system and slotter - Google Patents
Hoist motor feeds hydraulic system and slotter Download PDFInfo
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- CN208816423U CN208816423U CN201821303801.5U CN201821303801U CN208816423U CN 208816423 U CN208816423 U CN 208816423U CN 201821303801 U CN201821303801 U CN 201821303801U CN 208816423 U CN208816423 U CN 208816423U
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Abstract
The utility model discloses a kind of hoist motor feeding hydraulic system and slotters, are related to engineering machinery field, to realize that the different feed speeds under different operating conditions control using the same hoist motor.The control system, comprising: hoist motor；First oil inlet branch, and hoist motor hydraulic communication, for providing the hydraulic oil under the first operating mode to hoist motor；And the second oil inlet branch, and hoist motor hydraulic communication, for providing the hydraulic oil under the second operating mode to hoist motor；Wherein, the revolving speed of hoist motor is 50 times of the revolving speed of hoist motor under the second operating mode or more under the first operating mode.Above-mentioned technical proposal realizes under two kinds of operating modes, and elevator is by the lifting force of setting and the automatic feeding at a slow speed of speed completion equipment and quick handling manually.Also, in the construction process, either in which kind of operating mode, hoist motor uses the same motor always, has saved cost.
Description
Technical field
The utility model relates to engineering machinery fields, and in particular to a kind of hoist motor feeding hydraulic system and slotter.
Background technique
Double-wheel milling is a kind of important underground construction equipment, relies on the rock stratum of two milling wheel milling higher hardness.Non-
Under milling operating mode, the lifting speed of equipment is in 1~40m/min；Under milling operating mode, the lifting of equipment
The lifting speed of speed equipment at 0~40cm/min, two kinds of operating conditions differs hundred times.
Inventors have found that at least there are following problems in the prior art: the quality of equipment is in 30t~40t, to meet
Deeper channel construction requirement, when the quality of equipment all acts on milling rock stratum, i.e. lifting force of the elevator to equipment
It is zero, milling wheel will be unable to normal milling；When equipment is fed according to the speed under non-milling operating mode, i.e. feeding is fast
Degree is 1~40m/min, the single drilling depth amount of equipment will be caused excessive, and milling wheel will also can not normal milling.The prior art
In can only use two hoist motors, to realize the different feed speeds under milling and non-milling operating condition.
Utility model content
The utility model proposes a kind of hoist motor feeding hydraulic system and slotters, to use the same hoist motor
Realize the different feed speeds control under different operating conditions.
To achieve the above object, the utility model provides following technical scheme:
The utility model provides a kind of hoist motor feeding hydraulic system, comprising:
Hoist motor；
First oil inlet branch is used to provide the first Working mould to the hoist motor with the hoist motor hydraulic communication
Hydraulic oil under formula；And
Second oil inlet branch is used to provide the second Working mould to the hoist motor with the hoist motor hydraulic communication
Hydraulic oil under formula；
Wherein, the revolving speed of the hoist motor is the elevator under second operating mode under first operating mode
50 times or more of the revolving speed of motor.
In some embodiments, hoist motor feeds hydraulic system, further includes:
Repairing branch, and the hoist motor hydraulic communication, for supplementing the oil leak of its shell to the hoist motor.
In some embodiments, hoist motor feeds hydraulic system further include:
Speed reducer is connect with the hoist motor, for braking the hoist motor.
In some embodiments, hoist motor feeds hydraulic system further include:
First unlock oil circuit, and the speed reducer hydraulic communication, for releasing described subtract in this first operative mode
Braking of the fast machine to the hoist motor.
In some embodiments, hoist motor feeds hydraulic system further include:
Second unlock oil circuit, and the speed reducer hydraulic communication, for releasing described subtract in the second mode of operation
Braking of the fast machine to the hoist motor.
In some embodiments, the first oil inlet branch includes:
Direction switch valve group, for switching the oil inlet direction of the hoist motor, to realize that the hoist motor is in the
Rotating and reverse under one operating mode；
First oil pump, the oil outlet of first oil pump are connect with the first hydraulic fluid port of the direction switch valve group, the side
It is connected to the second hydraulic fluid port of switching valve group with oil return circuit, the third hydraulic fluid port of the direction switch valve group and the first oil of balanced valve
Mouth connection, the 4th hydraulic fluid port of the direction switch valve group are connected to the second hydraulic fluid port of the balanced valve；And
Balanced valve, the third hydraulic fluid port of the balanced valve are connected to the first hydraulic fluid port of the hoist motor, the balanced valve
4th hydraulic fluid port is connected to the second hydraulic fluid port of the hoist motor.
In some embodiments, the oil circuit between the oil outlet and the oil return circuit of first oil pump is equipped with first
Overflow valve.
In some embodiments, the second oil inlet branch includes:
Second oil pump,
Oil pressure fuel-flow control valve group is connected to the oil outlet of second oil pump, the oil outlet of the director valve with
The hoist motor hydraulic communication；Wherein, the oil pressure fuel-flow control valve group is used to adjust the oil mass and oil for the oil liquid for flowing through it
Pressure.
In some embodiments, the oil pressure fuel-flow control valve group includes:
Director valve is connected to the oil outlet of second oil pump, the oil outlet of the director valve and the volume
Raise motor hydraulic communication, wherein the output oil mass of the director valve is adjustable；And
Oil pressure adjusting valve, the oil pressure of the oil outlet for adjusting the director valve.
In some embodiments, the oil pressure adjusting valve is in power failure state, the oil of the oil outlet of the director valve
Pressure is 0, and the oil pressure adjusting valve is in obtain electricity condition, and the oil pressure of the oil outlet of the director valve is greater than 0 and is less than setting
Value.
In some embodiments, the director valve includes the automatically controlled flow valve of direct proportion；And/or the oil pressure is adjusted
Valve includes the automatically controlled overflow valve of direct proportion.
In some embodiments, the first unlock oil circuit includes:
Third oil pump；And
Valve group is braked, is connect with the oil outlet of the third oil pump, for conveying to the speed reducer in first work
The oil liquid of braking of the speed reducer to the hoist motor is released under operation mode.
In some embodiments, the braking valve group includes the first reversal valve, the first check valve and first throttle valve；
First hydraulic fluid port of first reversal valve is connected to the oil outlet of the third oil pump, and the of first reversal valve
Two hydraulic fluid ports are connected to the first hydraulic fluid port of the oil inlet of the first check valve and first throttle valve；
The control port of the oil outlet of first check valve and the second hydraulic fluid port of the first throttle valve with the speed reducer
Connection.
In some embodiments, the second unlock oil circuit includes:
4th oil pump；And
Control valve group is connect with the oil outlet of the 4th oil pump, for conveying to the speed reducer in second work
The oil liquid of braking of the speed reducer to the hoist motor is released under operation mode.
In some embodiments, the control valve group include second one-way valve, speed governing valve, solenoid valve, pilot operated directional control valve and
Third check valve；
The oil inlet of the third check valve is connected to the hydraulic fluid port of oil pressure fuel-flow control valve group, and the third check valve goes out
Hydraulic fluid port is connected to the first hydraulic fluid port of the first hydraulic fluid port of pilot operated directional control valve and hoist motor；Second hydraulic fluid port of the pilot operated directional control valve
It being connected to the first hydraulic fluid port of the speed governing valve, the second hydraulic fluid port of the speed governing valve is connected to the oil inlet of the second one-way valve,
The oil outlet of the second one-way valve is connected to the second hydraulic fluid port of the hoist motor.
In some embodiments, the speed governing valve includes the automatically controlled speed governing valve of direct proportion.
In some embodiments, first operating mode includes non-milling operating condition, and second operating mode includes milling
Cut operating condition.
In some embodiments, the oil pressure of the oil liquid of the repairing branch output is 5bar~15bar.
In some embodiments, the cracking pressure of the speed reducer is 30bar~50bar；It is opened when the speed reducer is in
State is opened, the hoist motor is by the reductor braking；When the speed reducer is in close state, the hoist motor not by
The reductor braking.
In some embodiments, in the second operation mode, the lifting force for the elevator that the hoist motor is driven meets
Following formula S 1:F=f (f (I2), i, Vg, D), wherein f (I2) be the hoist motor Ma mouth pressure, I2For oil pressure tune
The control electric current of valve is saved, i is the speed ratio of speed reducer, and Vg is the discharge capacity of the hoist motor, and D is the diameter of winding reel.
In some embodiments, in the second operation mode, under the speed for the elevator that the hoist motor is driven meets
State formula S 2:V=f (I1, i, Vg, D), wherein I1For the control electric current of speed governing valve, i is the speed ratio of speed reducer, and Vg is elevator horse
The discharge capacity reached, D are the diameter of winding reel.
In some embodiments, in the first operation mode, the lifting force for the elevator that the hoist motor is driven meets
Following formula S 3:F=G, wherein G is the weight of equipment.
In some embodiments, in the second operation mode, under the speed for the elevator that the hoist motor is driven meets
State formula S 4:V=f (δ), wherein δ is the flow for flowing to the hoist motor.
Another embodiment of the utility model provides a kind of slotter, including provided by any technical solution of the utility model
Hoist motor feeds hydraulic system.
Above-mentioned technical proposal realizes under two kinds of operating modes, and elevator presses the lifting force of setting and speed completes work
Make the descending operation of device, equipment realizes automatic feeding at a slow speed and quickly lifts manually.Also, in the construction process,
No matter which kind of operating mode slot milling machine is in, and hoist motor uses the same motor always, saved cost.Further, with
For first operating mode is non-milling operating condition, the second operating mode is milling operating condition.In the second operation mode, the speed of elevator
Degree (0~40cm/min) in Centimeter Level velocity interval is continuously adjustable, and the lifting force of elevator is continuously adjusted within the scope of 0~G,
Middle G is the weight of equipment；Ensuring the continuity of milling wheel milling, Double-wheel milling is stronger to the adaptability on more complex stratum,
Prevent compression shock caused by interrupted milling, improves the service life of equipment cutting apparatus.And above-mentioned elevator
Motor feeds hydraulic system, easy to operate, good operation reliability.
Detailed description of the invention
Attached drawing described herein is used to provide a further understanding of the present invention, and is constituted part of this application,
The exemplary embodiment of the utility model and the description thereof are used to explain the utility model, does not constitute to the improper of the utility model
It limits.In the accompanying drawings:
Fig. 1 is the working condition for the slot milling machine that hoist motor provided by the embodiment of the utility model is fed where hydraulic system
Schematic diagram；
Fig. 2 is the top half principle signal that the hoist motor that an embodiment of the present invention provides feeds hydraulic system
Figure；
Fig. 3 is the lower half portion principle signal that the hoist motor that an embodiment of the present invention provides feeds hydraulic system
Figure；
Fig. 4 is the schematic illustration that the hoist motor that another embodiment of the utility model provides feeds hydraulic system.
Specific embodiment
Below with reference to FIG. 1 to FIG. 4, technical scheme provided by the present invention will be described in more detail.
Referring to Fig. 1 to Fig. 3, the utility model embodiment provides a kind of hoist motor feeding hydraulic system, including elevator horse
Up to the 1, first oil inlet branch, the second oil inlet branch.First oil inlet branch and 1 hydraulic communication of hoist motor are used for hoist motor 1
Hydraulic oil under first operating mode is provided.Second oil inlet branch is used for 1 hydraulic communication of hoist motor to hoist motor 1
Hydraulic oil under second operating mode is provided.Wherein, the revolving speed of hoist motor 1 is under the second operating mode under the first operating mode
50 times or more of the revolving speed of hoist motor 1.
Referring to Fig. 1, hoist motor 1 is wound with wirerope 13 for driving elevator 12 to rotate on elevator 12, wirerope 13 is remote
One end from elevator 12 is connected with equipment 15.By pull-up wirerope 13, lift equipment 15；By putting down wirerope
13 realize the decentralization of equipment 15.
Referring to Fig. 1, for by above-mentioned hoist motor feeding hydraulic system applications on Double-wheel milling, the first operating mode packet
Non- milling operating condition is included, the second operating mode includes milling operating condition.First operating mode includes fast lifting, drops quickly to work
The bottom surface of device 15 reaches the operation of current groove depth position two.Second operating mode includes feeding at a slow speed so that equipment 15
Bottom surface reaches final groove depth position from current groove depth position.
Referring to Fig. 1, in actual use, the current height in detection equipment lower end surface, if the height of 15 bottom surface of equipment
Degree is then in the first operating mode between maximum lifting height and current groove depth；If the height of 15 bottom surface of equipment is situated between
Between current groove depth and final groove depth, then the second operating mode is in.
Above-mentioned technical proposal realizes the independent control of each branch oil mass, oil pressure by setting two individual fuel feeding branches
System, so that the revolving speed of hoist motor 1 in different branch fuel feeding, differs 50 times or more, so that can be using same
One hoist motor 1 realizes that speed differs 50 times or even hundreds times of rotating requires, and then meets different working modes simultaneously
Revolving speed requirement.
Referring to figs. 2 and 3, complete hydraulic schematic diagram is collectively formed in the two, in order to enable each component sufficiently clear, this time
The hydraulic schematic diagram Fig. 2, Fig. 3 two parts have been divided into.Box internal label 1 in the oil circuit and Fig. 3 of the lower end Fig. 2 box internal label 1
Oil circuit be connection, the oil circuit of the lower end Fig. 2 box internal label 2 is connected to the oil circuit of box internal label 2 in Fig. 3, Fig. 2
The oil circuit of lower end box internal label 3 is connected to the oil circuit of box internal label 3 in Fig. 3, the oil of the lower end Fig. 2 box internal label 4
Road is connected to the oil circuit of box internal label 4 in Fig. 3.
The optional implementation of the first oil inlet oil circuit is described below.
Referring to figs. 2 and 3, in some embodiments, the first oil inlet branch includes direction switch valve group 3,4 and of the first oil pump
Balanced valve 5.Direction switch valve group 3 is used to switch the oil inlet direction of hoist motor 1, to realize that hoist motor 1 is in the first work
Rotating and reverse under mode.The oil outlet P1 of first oil pump 4 is connect with the first hydraulic fluid port P of direction switch valve group 3, direction switching
Second hydraulic fluid port T of valve group 3 is connected to oil return circuit, and the third hydraulic fluid port A of direction switch valve group 3 and the first hydraulic fluid port A of balanced valve 5 connect
Logical, the 4th hydraulic fluid port B of direction switch valve group 3 is connected to the second hydraulic fluid port B of balanced valve 5.The third hydraulic fluid port and elevator of balanced valve 5
First hydraulic fluid port A of motor 1 is connected to, and the 4th hydraulic fluid port D of balanced valve 5 is connected to the second hydraulic fluid port S of hoist motor 1.
Referring to fig. 2, balanced valve 5 includes Bidirectional balanced valve, and main valve plug is bevel-type spool.
3 switching direction of direction switch valve group to realize rotating and reverse for hoist motor 1, and then realizes equipment 15
Fast lifting and quickly decentralization.
In order to guarantee from the first oil pump 4 export oil liquid pressure within the set range, the oil outlet of the first oil pump 4 with return
Oil circuit between oil circuit is equipped with the first overflow valve.
The optional implementation of the second oil inlet branch is described below.
Referring to figs. 2 and 3, in some embodiments, the second oil inlet branch includes the second oil pump 7 and fuel-flow control valve group
8, fuel-flow control valve group 8 is connected to the oil outlet P0 of the second oil pump 7, and the oil outlet and hoist motor 1 of director valve 81 are hydraulic
Connection.Fuel-flow control valve group 8 is used to adjust the oil mass and oil pressure for the oil liquid for flowing through it, so that flowing out from fuel-flow control valve group 8
Oil liquid oil pressure and oil mass meet the requirements.
Referring to fig. 2, fuel-flow control valve group 8 includes director valve 81 and oil pressure adjusting valve 82.Director valve 81 and
The oil outlet P0 of two oil pumps 7 is connected to, the oil outlet A and 1 hydraulic communication of hoist motor of director valve 81, wherein fuel-flow control
The output oil mass of valve 81 is adjustable.Director valve 81 is specially director valve.Oil pressure adjusting valve 82 is used for adjusting oil mass tune
Save the oil pressure of the oil outlet of valve 81.
Referring to fig. 2, oil pressure adjusting valve 82 is in power failure state, and the oil pressure of the oil outlet of director valve 81 is 0；Oil pressure tune
Electricity condition is obtained at section valve 82, the oil pressure of the oil outlet of director valve 81 is greater than 0 and is less than setting value.Oil pressure adjusting valve 82 is specific
It for example is overflow valve.
Referring to Fig. 3, in some embodiments, hoist motor feeding hydraulic system further includes repairing branch, repairing branch with
1 hydraulic communication of hoist motor, for supplementing the oil leak of its shell to hoist motor 1, to prevent hoist motor 1 from occurring being emptied now
As guaranteeing the reliability that hoist motor 1 works.Oil circuit corresponding to box 1 is repairing oil circuit in Fig. 2 and Fig. 3.
Referring to Fig. 3, repairing oil circuit is equipped with Fill valve 18, and Fill valve 18 is check valve, to prevent oil liquid from flowing backwards.
Referring to fig. 2, in some embodiments, the pressure of the S mouth of repairing oil circuit is always within the scope of 5bar~15bar.It should
Pressure value effectively supplements the oil pressure of the leakage of hoist motor 1, effectively prevents hoist motor 1 and emptying phenomenon occurs.
Another embodiment is described below.Referring to fig. 4, in order to guarantee engineering machinery using safe, do not needing elevator horse
Up to when 1 work, hoist motor 1 is in on-position.For example the braking and unlock of hoist motor 1 are realized using speed reducer 2.Specifically
Ground, it further includes speed reducer 2 that hoist motor, which feeds hydraulic system, and speed reducer 2 is connect with hoist motor 1, for braking hoist motor
1.Speed reducer 2 acts, so that brake(-holder) block is moved to the position of braking hoist motor 1.2 counteragent of speed reducer, so that brake(-holder) block
It is moved to the position for releasing and braking to hoist motor 1.
The cracking pressure of speed reducer 2 is 30bar~50bar.When speed reducer 2 is in the open state, i.e. the Br mouth of speed reducer 2
Pressure be greater than or equal to 30bar, hoist motor 1 be decelerated machine 2 braking.When speed reducer 2 is in close state, i.e. speed reducer 2
Br mouth pressure be less than 30bar, hoist motor 1 be not decelerated machine 2 braking.
Referring to fig. 4, in some embodiments, the movement under the first operating mode to speed reducer 2 is realized using following manner:
Hoist motor feeding hydraulic system further includes the first unlock oil circuit, the first unlock oil circuit and 2 hydraulic communication of speed reducer, for the
Braking of the speed reducer 2 to hoist motor 1 is released under one operating mode.
Referring to fig. 4, specifically, such as by the way of meeting the oil liquid of pressure requirements to the conveying of the Br hydraulic fluid port of speed reducer 2
Start speed reducer 2.
Referring to fig. 4, in some embodiments, the first unlock oil circuit includes third oil pump 9 and braking valve group 10.Brake valve
Group 10 is connect with the oil outlet P2 of third oil pump 9, right for releasing speed reducer 2 in the first operation mode to the conveying of speed reducer 2
The oil liquid of the braking of hoist motor 1.
The oil liquid flow direction of first unlock oil circuit are as follows: Br hydraulic fluid port-shuttle valve of the oil outlet P2- braking valve group 10 of third oil pump 9
17 b hydraulic fluid port-speed reducer 2 Br hydraulic fluid port.
Referring to fig. 4, in some embodiments, the movement under the second operating mode to speed reducer 2 is realized using following manner:
Hoist motor feeding hydraulic system further includes the second unlock oil circuit, the second unlock oil circuit and 2 hydraulic communication of speed reducer, for the
Braking of the speed reducer 2 to hoist motor 1 is released under two operating modes.
In some embodiments, specifically, the second unlock oil circuit includes the 4th oil pump and control valve group 11.4th oil pump and
Third oil pump 9 is such as the same oil pump.Control valve group 11 is connect with the oil outlet P2 of third oil pump 9, for defeated to speed reducer 2
It send and releases speed reducer 2 in the second operation mode to the oil liquid of the braking of hoist motor 1.
The oil liquid flow direction of second unlock oil circuit are as follows: the oil outlet P2- solenoid valve 113- control valve group 11 of third oil pump 9
Br hydraulic fluid port-shuttle valve 17 a hydraulic fluid port-speed reducer 2 Br hydraulic fluid port.
A specific embodiment is described below.
The purpose of the utility model is to provide a kind of elevator feed control systems at a slow speed, realize elevator and mention by preset
Lift F and feed speed V completes feeding control at a slow speed.As shown in Figure 1, a kind of hoist motor feeds hydraulic system, steel wire is utilized
Rope bypasses fixed pulley group, and elevator is coupled with equipment, and driving elevator acts the handling for realizing equipment.Elevator
The mode of driving uses hydraulic control system.
A specific embodiment is described below.Hoist motor provided by the embodiment of the utility model feeds hydraulic system
Hoist motor 1, speed reducer 2, direction switch valve group 3, the first oil pump 4, balanced valve 5, the second oil pump 7, fuel-flow control valve group 8,
Three oil pumps 9, braking valve group 10, control valve group 11, pressure switch 16, shuttle valve 17, Fill valve 18, pressure sensor 19 and guide's hand
Handle 20.
Under milling operating mode, hoisting power is F:
F=f (f (I2)、i、Vg、D) S1
Under milling operating mode, lifting-speed V:
V=f (I1、i、Vg、D) S2
Wherein, in above-mentioned formula S1, S2, f (I2) be hoist motor 1 Ma mouth pressure, I1For the control of speed governing valve 112
Electric current, I2For the control electric current of oil pressure adjusting valve 82, i is the speed ratio of speed reducer 2, and Vg is the discharge capacity of hoist motor 1, and D is elevator
The diameter of reel.
By the control electric current I for regulating and controlling speed governing valve 1121With the control electric current I of oil pressure adjusting valve 822, realize elevator at a slow speed
The control of feed speed and lifting force realizes the speed that elevator is fed at a slow speed and is continuously adjusted within the scope of 0~40cm/min.
Under non-milling operating mode, hoisting power is F:
F=G S3
Under non-milling operating mode, lifting-speed V:
V=f (δ) S4
Wherein, in above-mentioned formula S3, S4, G is the weight of equipment, and δ is the flow of 3 elevator of direction switch valve group connection.
Under non-milling operating mode, the promotion of elevator is the weight of equipment, by the stream for changing flow divider valve elevator connection
Amount to adjust the handling speed of elevator in real time, and speed is continuously adjusted within the scope of 1~40m/min.
Referring to fig. 4, the valve position under milling mode is described below and controls the connected state of oil circuit.In milling operating mode
Under, pilot handle 20 is in middle position, and the main valve plug of direction switch valve group 3 corresponding to hoist motor 1 is in middle position, Fill valve 18
Fuel feeding to hoist motor 1 S mouth, 9 fuel feeding of third oil pump to control valve group 11 X mouth, solenoid valve 113 electric, control valve group 11
The control oil of Br mouth the Br mouth of speed reducer 2 is transferred to through shuttle valve 17.Pilot operated directional control valve 114 switch to it is upper, by speed governing valve
112 set up to desired flow value, the A mouth of the high pressure oil inflow control valve group 11 of the Ma mouth of hoist motor 1, and through control valve
The speed governing valve 112 of the inside of group 11, second one-way valve 111 flow out to the Mb mouth of hoist motor 1.In addition, director valve 81
Oil pressure adjusting valve 82 is set up the pressure value to setting, detects pressure value, 7 fuel feeding of the second oil pump by pressure sensor 19 by electricity
To director valve group 8, the A mouth of fuel-flow control valve group 8 is connected to the S mouth of control valve group 11.By to oil pressure adjusting valve 82 with
The control of speed governing valve 112 is realized that equipment is automatically performed according to the lifting force F of setting with speed V and is fed at a slow speed.
Under non-milling operating mode, i.e. the non-arrival slot bottom of equipment, the second oil pump 7 not pressure oil output, control valve
Group 11 with all valves in the inside of fuel-flow control valve group 8 all in middle position, S mouth of 18 fuel feeding of Fill valve to hoist motor 1.Manipulation is first
Handle 20 is led, direction switch valve group 3 corresponding to hoist motor 1 can be opened, so that 1 fuel feeding of hoist motor is given, at the same time, the
Br mouth of three oil pumps 9 through braking valve group 10,17 fuel feeding hoisting speed reducer 2 of shuttle valve, realizes the quick handling of equipment.
By the above process as it can be seen that elevator is under milling and non-milling both of which, used motor is the same elevator
Motor 1.
The Br mouth of a mouth connection control valve group 11 of shuttle valve 17, the Br mouth of the b mouth connection brake circuit of shuttle valve 17.
Referring to fig. 4, fuel-flow control valve group 8 uses load-sensitive valve, and fuel-flow control valve group 8 includes director valve 81, oil
Press regulating valve 82 and guide's pressure reducing valve 83.Director valve 81 is the automatically controlled flow valve of direct proportion, and control electric current Y3 is bigger, oil mass
The output flow for adjusting the A mouth of valve group 8 is bigger；Control electric current Y3 is smaller, and the output flow of the A mouth of fuel-flow control valve group 8 is smaller.
Oil pressure adjusting valve 82 is the automatically controlled overflow valve of direct proportion, and control electric current Y2 is bigger, and 19 pressure of pressure sensor is bigger, volume
It is bigger to raise lifting force F；Control electric current Y2 is smaller, and 19 pressure of pressure sensor is smaller, and hoisting power F is smaller.
Referring to fig. 4, the second oil pump 7 is load-reacting plunger hydraulic pump.
Referring to fig. 4, control valve group 11 includes second one-way valve 111, speed governing valve 112, solenoid valve 113, pilot operated directional control valve 114
With third check valve 115.Control valve group 11 is located on the second oil inlet branch and the second unlock oil circuit.
Referring to fig. 4, the oil inlet of third check valve 115 is connected to the A mouth of oil pressure fuel-flow control valve group 8, third check valve
115 oil outlet is connected to the A mouth of the first hydraulic fluid port of pilot operated directional control valve 114 and hoist motor 1.The of pilot operated directional control valve 114
Two hydraulic fluid ports are connected to the first hydraulic fluid port of speed governing valve 112, and the second hydraulic fluid port of speed governing valve 112 and the oil inlet of second one-way valve 111 connect
Logical, the oil outlet of second one-way valve 111 is connected to the S of hoist motor 1 mouth.The oil outlet and hoist motor of second one-way valve 111
Oil circuit between 1 S mouth is equipped with pressure switch 16.
Speed governing valve 112 is the automatically controlled speed governing valve of direct proportion, and control electric current Y1 is bigger, and the through-current capacity of speed governing valve 112 is bigger, volume
It is bigger to raise the speed V fed at a slow speed；Control electric current Y1 is smaller, and the through-current capacity of speed governing valve 112 is smaller, the speed that elevator is fed at a slow speed
V is smaller.
When elevator is fed at a slow speed, the output pressure for braking the Br mouth of valve group 10 is 0bar, the Br mouth pressure of control valve group 11
Within the scope of 30bar~35bar；When elevator quickly lifts, the Br mouth pressure of valve group 10 is braked within the scope of 30bar~35bar,
The Br mouth pressure of control valve group 11 is 0bar.
When the pressure of the S of hoist motor 1 mouth is lower than 5bar, pressure switch is opened, the solenoid valve in control valve group 11
113 power loss, i.e. Y0=0V, solenoid valve 113 switch to spring position.The Br mouth pressure of control valve group 11 is zero, the Br mouth of speed reducer 2
Pressure be also zero, speed reducer 2 to hoist motor 1 brake, 1 feed-disabling of hoist motor.In the valve group of oil pressure fuel-flow control at this time 8
81 power loss of director valve, i.e. Y3=0, the A mouth of oil pressure fuel-flow control valve group 8 exports without oil liquid.
It feeds under operating condition at a slow speed, solenoid valve 113 is in obtain electricity condition, and pilot operated directional control valve 114 is in upper, i.e. liquid controlled reversing
The left side hydraulic fluid port of valve 114 is connected with right side hydraulic fluid port, and speed governing valve 112 is in obtain electricity condition.When the pressure that third check valve 115 exports
When power is less than inlet pressure, via the oil liquid that oil pressure fuel-flow control valve group 8 exports, control is entered by third check valve 115
In valve group 11.The A mouth that hoist motor 1 is flowed to via the oil liquid that third check valve 115 enters, until the A mouth pressure of hoist motor 1
More than or equal to the A mouth pressure of oil pressure fuel-flow control valve group 8, wherein the A mouth pressure of oil pressure fuel-flow control valve group 8 depends on oil pressure tune
Save valve 82.
It is described below and feeds under operating condition at a slow speed, it is upper how pilot operated directional control valve 114 switches to.Since solenoid valve 113 is in
Electricity condition is obtained, in bottom.Third oil pump 9 delivered oil liquid to solenoid valve 113, which exports via solenoid valve 113,
Control oil of a part as pilot operated directional control valve 4, so that pilot operated directional control valve 4 commutates to upper, the conducting of pilot operated directional control valve 4.Electromagnetism
Another part oil liquid that valve 113 exports has flowed to a mouth of shuttle valve 17, then flows to the Br mouth of speed reducer 2, so that speed reducer 2 is dynamic
Make, and then releases the braking to hoist motor 1.
Under milling operating mode, the Br mouth pressure of brake circuit is zero, and the Br mouth pressure of control valve group 11 is in 30bar
Within the scope of~35bar；When elevator quickly lifts, the Br mouth pressure of brake circuit is within the scope of 30bar~35bar, control valve group
11 Br mouth pressure is zero.
The cracking pressure of speed reducer 2 is 30bar~50bar.
When the pressure of the S of hoist motor 1 mouth is lower than 5bar, pressure switch 3 is opened, the solenoid valve in control valve group 11
113 power loss, i.e. Y0=0, solenoid valve 113 switch to spring position, and the Br mouth pressure of control valve group 11 is zero, elevator feed-disabling.
The Br mouth of a mouth connection control valve group 11 of shuttle valve 17, the Br mouth of the b mouth connection brake circuit of shuttle valve 17.
Hold above-mentioned, fuel-flow control valve group 8 is load-sensitive valve, and fuel-flow control valve group 8 includes director valve 81, oil pressure tune
Save valve 82 and guide's pressure reducing valve 83.The oil outlet P0 of second oil pump 7 is connected to guide's pressure reducing valve 83 and director valve 81
The connection of first hydraulic fluid port, A mouthfuls of oil outlet as fuel-flow control valve group 8 of the second hydraulic fluid port of director valve 81.Oil pressure adjusting valve 82
Between the third hydraulic fluid port and fuel tank of director valve 81, to control A mouthfuls of oil outlet of oil pressure of fuel-flow control valve group 8.
The specific connection of balanced valve 5 is described below.The A mouth of balanced valve 5 is connected to the A of direction switch valve group 3 mouth, balance
The B mouth of valve 5 is connected to the B of direction switch valve group 3 mouth, and the C mouth of balanced valve 5 is connected to the A of hoist motor 1 mouth, the D of balanced valve 5
Mouth is connected to the S of hoist motor 1 mouth.
Referring to figs. 2 and 3, hold above-mentioned, hydraulic control system includes hydraulic pump, control valve group 11, oil pressure director valve
Group 8, hoist motor 1 and corresponding hydraulic oil circuit.Wherein the P0 mouth of the second oil pump 7 connects the P mouth of fuel-flow control valve group 8, oil mass
The LS mouth for adjusting valve group 8 connects the LS mouth of the second oil pump 7, and the A mouth of fuel-flow control valve group 8 connects the S mouth of control valve group 11.
The A mouth of control valve group 11 connects the Ma mouth of hoist motor 1, and the B mouth of control valve group 11 connects the Mb mouth of hoist motor 1, control
The X mouth of valve group 11 processed connects X mouthfuls of guide's oil circuit, and the Br mouth of control valve group 11 connects a mouth of shuttle valve 17.
The b mouth of shuttle valve 17 connects the Br mouth of braking valve group 10, and a, b mouth of braking valve group 10 connect the 1 of pilot handle, 2 mouthful respectively,
The P mouth of braking valve group 10 connects the P2 mouth of third oil pump 9.
The c mouth of shuttle valve 17 connects the Br mouth of hoisting speed reducer 2, and the S mouth of hoist motor 1 connects the b mouth of Fill valve 18.Fill valve 18
A mouth connect the oil outlet of third oil pump 9, balanced valve 5 is directly mounted on hoist motor 1.
A, B mouth of balanced valve 5 connect A, B mouth of direction switch valve group 3 respectively, and a, b mouth of direction switch valve group 3 meet elder generation respectively
1,2 hydraulic fluid ports of handle 20 are led, the P mouth of direction switch valve group 3 connects the P1 mouth of the first oil pump 4, and 20P mouthfuls of pilot handle connect third oil
The P2 mouth of pump 9.
Referring to fig. 4, pressure sensor 19 is installed on the LS mouth of fuel-flow control valve group 8, and pressure switch 3 is installed on hoist motor
1 Mb mouth.
Elevator working condition is divided into both of which: milling operating mode and non-milling operating mode, such as Fig. 1, work dress
The bottom face set is defined as non-milling operating mode when " maximum lifting height " and " current groove depth " section work；When
When " current groove depth " and " final groove depth " section work, it is defined as milling operating mode；
Under milling operating mode, pilot handle 20 is in middle position, direction switch valve group 3 corresponding to hoist motor 1
Main valve plug is in middle position, 18 fuel feeding of Fill valve to hoist motor 1 S mouth, 9 fuel feeding of third oil pump to control valve group 11 X mouth,
Solenoid valve 113 obtains electric, the oily Br mouth that speed reducer 2 is transferred to through shuttle valve 17 of the control of the Br mouth of control valve group 11, pilot operated directional control valve
114 switch to upper, speed governing valve 112 are set up to desired flow value, the high pressure oil of Ma mouth of hoist motor 1, which flows into, to be controlled
The A mouth of valve group 11, and the speed governing valve 112 of the inside through control valve group 11, second one-way valve 111 flow out to the Mb of hoist motor 1
Mouthful.
In addition, director valve 81 must be electric, oil pressure adjusting valve 82 is set up and arrives required pressure value, by pressure sensor
19 observe pressure value, and 7 fuel feeding of the second oil pump is connected to control valve group to director valve group 8, the A mouth of fuel-flow control valve group 8
11 S mouth.Realize equipment according to the lifting force F of setting and speed by the control to oil pressure adjusting valve 82 and speed governing valve 112
Degree V, which is automatically performed, to be fed at a slow speed.
Under non-milling operating mode, i.e. the non-arrival slot bottom of equipment, the second oil pump 7 not pressure oil output, control valve
Group 11 is all in middle position with the 8 all valves in inside of fuel-flow control valve group, and 18 fuel feeding of Fill valve is to the S mouth of hoist motor 1, and manipulation is first
Handle 20 is led, direction switch valve group 3 corresponding to hoist motor 1 can be opened, so that 1 fuel feeding of hoist motor is given, at the same time, the
Three oil pumps 9 realize the quick handling of equipment through braking valve group 10,2Br mouthfuls of 17 fuel feeding hoisting speed reducer of shuttle valve.
Above-mentioned technical proposal realizes under two kinds of operating modes such as milling and non-milling, and elevator is by the lifting force F set
Feeding at a slow speed and quickly lifting automatically manually for equipment is completed with speed V.Also, it in the construction process, is either milling
Operating mode is cut, is also non-milling operating mode, hoist motor 1 uses the same motor always, saved cost.In milling work
Under operation mode, the speed of elevator (0~40cm/min) in Centimeter Level velocity interval is continuously adjustable, and the lifting force of elevator is in 0~G
It is continuously adjusted in range, wherein G is the weight of equipment.The continuity for ensuring milling wheel milling fits more complex stratum
Should be able to power it is stronger, prevented compression shock caused by interrupted milling, improved the service life of equipment cutting apparatus.On
State hoist motor feeding hydraulic system, easy to operate, good operation reliability.
Another embodiment of the utility model provides a kind of slotter, including provided by any technical solution of the utility model
Hoist motor feeds hydraulic system.
In some embodiments, which is two-wheel flute milling machine.
Another embodiment of utility model provides a kind of 1 feed control method of hoist motor, can be used on the utility model
The hoist motor feeding hydraulic system for stating any embodiment offer is realized.Method includes the following steps:
First, judge that engineering machinery is in the first operating mode or the second operating mode.
If the first operating mode secondly, is in, using 1 fuel feeding of the first oil inlet Zhi Luxiang hoist motor；If being in the second work
Operation mode, using 1 fuel feeding of the second oil inlet Zhi Luxiang hoist motor.
In some embodiments, the current height and position in the equipment lower end surface of work machine, if equipment
The height of bottom surface is between maximum lifting height and current groove depth, then is in the first operating mode；If equipment bottom surface
Height is then in the second operating mode between current groove depth and final groove depth.
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown is only the utility model and simplified description for ease of description, rather than indicates or imply meaning
Device or element must have a particular orientation, construct and operate for specific orientation, thus should not be understood as practical new to this
The limitation of type protection content.
Finally, it should be noted that above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that:
It is still possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is carried out etc.
With replacement, but these are modified or replaceed, various embodiments of the utility model technology that it does not separate the essence of the corresponding technical solution
The spirit and scope of scheme.
Claims (24)
1. a kind of hoist motor feeds hydraulic system characterized by comprising
Hoist motor (1)；
First oil inlet branch works with the hoist motor (1) hydraulic communication for providing first to the hoist motor (1)
Hydraulic oil under mode；And
Second oil inlet branch works with the hoist motor (1) hydraulic communication for providing second to the hoist motor (1)
Hydraulic oil under mode；
Wherein, the revolving speed of the hoist motor (1) is the elevator under second operating mode under first operating mode
50 times or more of the revolving speed of motor (1).
2. hoist motor according to claim 1 feeds hydraulic system, which is characterized in that further include:
Repairing branch is used to supplement the oil leak of its shell to the hoist motor (1) with the hoist motor (1) hydraulic communication.
3. hoist motor according to claim 1 feeds hydraulic system, which is characterized in that further include:
Speed reducer (2) is connect with the hoist motor (1), for braking the hoist motor (1).
4. hoist motor according to claim 3 feeds hydraulic system, which is characterized in that further include:
First unlock oil circuit, and the speed reducer (2) hydraulic communication, for releasing the deceleration in this first operative mode
Braking of the machine (2) to the hoist motor (1).
5. hoist motor according to claim 3 feeds hydraulic system, which is characterized in that further include:
Second unlock oil circuit, and the speed reducer (2) hydraulic communication, for releasing the deceleration in the second mode of operation
Braking of the machine (2) to the hoist motor (1).
6. hoist motor according to claim 1 feeds hydraulic system, which is characterized in that the first oil inlet branch packet
It includes:
Direction switch valve group (3), for switching the oil inlet direction of the hoist motor (1), to realize at the hoist motor (1)
Rotating and reverse under the first operating mode；
First oil pump (4), the oil outlet of first oil pump (4) are connect with the first hydraulic fluid port of the direction switch valve group (3), institute
The second hydraulic fluid port for stating direction switch valve group (3) is connected to oil return circuit, the third hydraulic fluid port and balance of the direction switch valve group (3)
First hydraulic fluid port of valve (5) is connected to, and the 4th hydraulic fluid port of the direction switch valve group (3) and second hydraulic fluid port of the balanced valve (5) connect
It is logical；And
The third hydraulic fluid port of balanced valve (5), the balanced valve (5) is connected to the first hydraulic fluid port of the hoist motor (1), the balance
4th hydraulic fluid port of valve (5) is connected to the second hydraulic fluid port of the hoist motor (1).
7. hoist motor according to claim 6 feeds hydraulic system, which is characterized in that first oil pump (4) goes out
Oil circuit between hydraulic fluid port and the oil return circuit is equipped with the first overflow valve.
8. hoist motor according to claim 1 or 4 feeds hydraulic system, which is characterized in that the second oil inlet branch
Include:
Second oil pump (7)；And
Fuel-flow control valve group (8) is connected to the oil outlet of second oil pump (7), the oil outlet of the director valve (81)
With the hoist motor (1) hydraulic communication；Wherein, the fuel-flow control valve group (8) is used to adjust the oil mass for the oil liquid for flowing through it
And oil pressure.
9. hoist motor according to claim 8 feeds hydraulic system, which is characterized in that the fuel-flow control valve group (8)
Include:
Director valve (81) is connected to the oil outlet of second oil pump (7), the oil outlet of the director valve (81) with
Hoist motor (1) hydraulic communication, wherein the output oil mass of the director valve (81) is adjustable；And
Oil pressure adjusting valve (82), the oil pressure of the oil outlet for adjusting the director valve (81).
10. hoist motor according to claim 9 feeds hydraulic system, which is characterized in that the oil pressure adjusting valve (82)
In power failure state, the oil pressure of the oil outlet of the director valve (81) is 0；The oil pressure adjusting valve (82) is in obtain electric shape
State, the oil pressure of the oil outlet of the director valve (81) are greater than 0 and are less than setting value.
11. hoist motor according to claim 9 feeds hydraulic system, which is characterized in that the director valve (81)
Including the automatically controlled flow valve of direct proportion；And/or the oil pressure adjusting valve (82) includes the automatically controlled overflow valve of direct proportion.
12. hoist motor according to claim 4 feeds hydraulic system, which is characterized in that the first unlock oil circuit packet
It includes:
Third oil pump (9)；And
It brakes valve group (10), is connect with the oil outlet of the third oil pump (9), for conveying to the speed reducer (2) described
The oil liquid of braking of the speed reducer (2) to the hoist motor (1) is released under first operating mode.
13. hoist motor according to claim 12 feeds hydraulic system, which is characterized in that braking valve group (10) packet
Include the first reversal valve (101), the first check valve (102) and first throttle valve (103)；
First hydraulic fluid port of first reversal valve (101) is connected to the oil outlet of the third oil pump (9), first reversal valve
(101) the second hydraulic fluid port is connected to the first hydraulic fluid port of the oil inlet of the first check valve (102) and first throttle valve (103)；
The oil outlet of first check valve (102) and the second hydraulic fluid port of the first throttle valve (103) with the speed reducer
(2) control port connection.
14. hoist motor according to claim 5 feeds hydraulic system, which is characterized in that the second unlock oil circuit packet
It includes:
4th oil pump；And
Control valve group (11) is connect with the oil outlet of the 4th oil pump, for conveying to the speed reducer (2) described second
The oil liquid of braking of the speed reducer (2) to the hoist motor (1) is released under operating mode.
15. hoist motor according to claim 14 feeds hydraulic system, which is characterized in that control valve group (11) packet
Include second one-way valve (111), speed governing valve (112), solenoid valve (113), pilot operated directional control valve (114) and third check valve (115)；
The oil inlet of the third check valve (115) is connected to the oil outlet of fuel-flow control valve group (8), the third check valve
(115) oil outlet is connected to the first hydraulic fluid port of the first hydraulic fluid port of pilot operated directional control valve (114) and hoist motor (1)；The liquid
Second hydraulic fluid port of control reversal valve (114) is connected to the first hydraulic fluid port of the speed governing valve (112), and the second of the speed governing valve (112)
Hydraulic fluid port is connected to the oil inlet of the second one-way valve (111), the oil outlet of the second one-way valve (111) and the elevator horse
The second hydraulic fluid port up to (1) is connected to.
16. hoist motor according to claim 15 feeds hydraulic system, which is characterized in that speed governing valve (112) packet
Include the automatically controlled speed governing valve of direct proportion.
17. hoist motor according to claim 1 feeds hydraulic system, which is characterized in that the first operating mode packet
Non- milling operating condition is included, second operating mode includes milling operating condition.
18. hoist motor according to claim 2 feeds hydraulic system, which is characterized in that the repairing branch output
The oil pressure of oil liquid is 5bar~15bar.
19. hoist motor according to claim 3 feeds hydraulic system, which is characterized in that the unlatching of the speed reducer (2)
Pressure is 30bar~50bar；When the speed reducer (2) is in the open state, the hoist motor (1) is by the speed reducer (2)
Braking；When the speed reducer (2) is in close state, the hoist motor (1) is not braked by the speed reducer (2).
20. hoist motor according to claim 1 feeds hydraulic system, which is characterized in that in the second operation mode, institute
The lifting force for stating the elevator that hoist motor (1) is driven meets following formula S 1:F=f (f (I2), i, Vg, D), wherein f (I2)
For the pressure of the Ma mouth of the hoist motor (1), I2For the control electric current of oil pressure adjusting valve (82), i is the speed of speed reducer (2)
Than Vg is the discharge capacity of the hoist motor (1), and D is the diameter of winding reel.
21. hoist motor according to claim 1 feeds hydraulic system, which is characterized in that in the second operation mode, institute
The speed for stating the elevator that hoist motor (1) is driven meets following formula S 2:V=f (I1, i, Vg, D), wherein I1For speed governing valve
(112) control electric current, i are the speed ratio of speed reducer (2), and Vg is the discharge capacity of hoist motor (1), and D is the diameter of winding reel.
22. hoist motor according to claim 1 feeds hydraulic system, which is characterized in that in the first operation mode, institute
The lifting force for stating the elevator that hoist motor (1) is driven meets following formula S 3:F=G, wherein G is the weight of equipment.
23. hoist motor according to claim 1 feeds hydraulic system, which is characterized in that in the second operation mode, institute
The speed for stating the elevator that hoist motor (1) is driven meets following formula S 4:V=f (δ), wherein δ is to flow to the elevator horse
Up to the flow of (1).
24. a kind of slotter, which is characterized in that feed hydraulic system including any hoist motor of claim 1-23.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821303801.5U CN208816423U (en) | 2018-08-13 | 2018-08-13 | Hoist motor feeds hydraulic system and slotter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821303801.5U CN208816423U (en) | 2018-08-13 | 2018-08-13 | Hoist motor feeds hydraulic system and slotter |
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| Publication Number | Publication Date |
|---|---|
| CN208816423U true CN208816423U (en) | 2019-05-03 |
Family
ID=66273378
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| Application Number | Title | Priority Date | Filing Date |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108730244A (en) * | 2018-08-13 | 2018-11-02 | 徐州徐工基础工程机械有限公司 | Hoist motor feeds hydraulic system and method and slotter |
-
2018
- 2018-08-13 CN CN201821303801.5U patent/CN208816423U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108730244A (en) * | 2018-08-13 | 2018-11-02 | 徐州徐工基础工程机械有限公司 | Hoist motor feeds hydraulic system and method and slotter |
| CN108730244B (en) * | 2018-08-13 | 2024-06-21 | 徐州徐工基础工程机械有限公司 | Winch motor feeding hydraulic system and method and slot milling machine |
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