CN106809743B - The monitoring system and wheel-mounted crane of crane brake state - Google Patents
The monitoring system and wheel-mounted crane of crane brake state Download PDFInfo
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- CN106809743B CN106809743B CN201611244182.2A CN201611244182A CN106809743B CN 106809743 B CN106809743 B CN 106809743B CN 201611244182 A CN201611244182 A CN 201611244182A CN 106809743 B CN106809743 B CN 106809743B
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/88—Safety gear
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
- B66C13/20—Control systems or devices for non-electric drives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
- B66C13/22—Control systems or devices for electric drives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C15/00—Safety gear
- B66C15/06—Arrangements or use of warning devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
- B66C23/36—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/052—Linking several PLC's
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The present invention relates to crane correlative technology fields, disclose a kind of monitoring system and wheel-mounted crane of crane brake state.In the monitoring system of the crane brake state, which includes comprising brake apparatus and the hydraulic brake valve being connected with the brake apparatus, the monitoring system：Pressure-detecting device, for detecting to obtain the brake pressure parameter of the hydraulic brake valve；On-position suggestion device；Control device executes on-position prompt operation at least controlling the on-position suggestion device according to the brake pressure parameter for detecting acquisition.Timely and effective alarm can be at least carried out when braking system circuit is broken down as a result,.
Description
Technical field
The present invention relates to crane correlative technology fields, and in particular, to a kind of monitoring system of crane brake state
And wheel-mounted crane.
Background technology
Wheel-mounted crane general axis is away from small, and vehicle body is short, therefore turning radius is small, is suitable for narrow Work places, and allow
Lift heavy travels at a slow speed.Due to having the advantages that these, rubber tired crane industry achieves faster development, especially in hairs such as America and Europes
Up to area, quickly grow.Since rubber tired crane dead weight is heavier, and allow to hang load traveling, motor vehicle braking system be required very high.
Since hydraulic braking is rapider, sensitive relative to gas brake response, rubber tired crane generally uses hydraulic pressure system
Dynamic form；The brake circuit branch vehicle brake circuit and parking brake loop of crane, wherein service brake circuit are for normal
Vehicle braking in driving process, and parking brake loop be used for parking when vehicle braking.
The structural schematic diagram of the brake circuit of crane in the prior art is shown referring to Fig. 1, specifically the lifting
The brake circuit of machine includes brake pump 101, high pressure filter 102, prefill valve 103, accumulator 1041-1043, service brake valve
105, valve assembly 106, system oil return filter 107, running brake 108, parking brake 109 are braked.The crane brake
Operation principle be：Brake pump 101 gives braking system pressurising to setting pressure by prefill valve 103, passes through accumulator 1041-
1043 give braking system pressurize, and after brake system pressure drops to certain setup pressure value, prefill valve 103 is again started up pressurising.
In order to ensure that the reliability of crane brake, the arrestment mechanism of the crane are divided into service brake and parking braking, and correspondingly
Use double-circuit system when braking system is to realize, with guarantee after a system breaks down, another system can also be completed
Braking.As shown in Figure 1, stepping on brake pedal in crane trolley so that service brake valve 105 works, the effect of hydraulic power oil
To running brake 108 so that crane is braked；And park brake switch is opened in parking braking so that brake valve
Assembly 106 controls hydraulic oil and flows back to fuel tank, and parking brake 109 is made to generate brake force under spring force, so that
Crane is obtained to be stopped.
But the brake circuit of crane in the above prior art at least has the following technical problems：
When brake circuit breaks down, or when brake circuit hypotony, braking effect are bad, service brake is returned
Road lacks braking result instruction device, causes driver that cannot understand brake fault in time, has some potential safety problems.
When pressure release failure occurs in parking brake loop, parking braking can not release, and be pressed since parking brake loop lacks
Power warning device causes driver that can not directly know the pressure release failure, moves ahead when the driver hangs shelves by force, may cause to make
Movable plate damages and causes larger economic loss.
Therefore, the driving safety of the whether reliable direct relation crane of braking system, the present inventor is the practice present invention's
It finds in the process：It is to ensure entire braking system reliability that timely and effective alarm how is carried out in braking system loop fault
One effective research direction and important topic.
Invention content
The object of the present invention is to provide one kind capable of carrying out timely and effective alarm when braking system circuit is broken down
The monitoring system and wheel-mounted crane of heavy-duty machine on-position, at least to solve to be illustrated in background technology due to crane
The driver of service brake circuit and parking brake loop caused by lacking pressure warning unit can not know braking in time
The technical issues of system failure.
To achieve the goals above, on the one hand the embodiment of the present invention provides a kind of monitoring system of crane brake state,
The crane includes brake apparatus and the hydraulic brake valve that is connected with the brake apparatus, which includes：
Pressure-detecting device, for detecting to obtain the brake pressure parameter of the hydraulic brake valve；
On-position suggestion device；
Control device, at least controlling above-mentioned on-position suggestion device according to the brake pressure parameter for detecting acquisition
Execute on-position prompt operation.
Optionally, above-mentioned control device, for according to the above-mentioned on-position of brake pressure state modulator for detecting acquisition
Suggestion device executes on-position prompt operation and above-mentioned control device is additionally operable to according to the brake pressure ginseng for detecting acquisition
Number controls the brake apparatus and executes braking maneuver.
Optionally, which includes running brake and/or parking brake, and above-mentioned hydraulic brake valve includes and this
The service brake valve that running brake is connected and/or the braking valve for vehicle being connected with the parking brake.
Optionally, above-mentioned pressure-detecting device includes：The first pressure detection device being connect with above-mentioned service brake valve,
For detecting to obtain the service brake pressure value of above-mentioned service brake valve, and/or second connect with above-mentioned braking valve for vehicle
Pressure-detecting device, for detecting to obtain the parking braking pressure value of above-mentioned braking valve for vehicle；Wherein, above-mentioned control device is used
It is compared with the corresponding service brake of determination in service brake pressure value and the certain driving pressure threshold obtained will be detected
Comparison result and/or above-mentioned control device are used to that the parking braking pressure value obtained and certain parking braking pressure will to be detected
Threshold value is compared with the corresponding parking braking comparison result of determination and above-mentioned control device for being compared according to the service brake
As a result and/or parking braking comparison result controls above-mentioned on-position suggestion device and executes corresponding on-position prompt operation.
Optionally, above-mentioned on-position suggestion device includes that buzzer and/or indicator light and above-mentioned control device are used for
The buzzer, which is controlled, according to the service brake comparison result and/or parking braking comparison result executes buzzing action and/or control
The indicator light executes bright snap action.
Optionally, above-mentioned parking braking pressure threshold includes multiple classification parking braking pressure thresholds；And above-mentioned braking
Condition prompting device is configured to executable multigroup unique braking shape corresponding to above-mentioned multiple classification parking braking pressure thresholds
State prompt operation, wherein above-mentioned on-position suggestion device is used for according to acquired parking braking pressure value and multiple points above-mentioned
Grade parking braking pressure threshold selects one in the multigroup on-position prompt operation that can perform from above-mentioned on-position suggestion device
Execute corresponding on-position prompt operation.
Optionally, above-mentioned second pressure detection device is connected to the input terminal and/or output end of above-mentioned braking valve for vehicle, with
And the braking valve for vehicle that the above-mentioned parking braking pressure value that is detected of above-mentioned second pressure detection device is above-mentioned braking valve for vehicle
Pressure value after preceding pressure value and/or braking valve for vehicle, wherein above-mentioned control device is used for according to the parking braking for detecting acquisition
Pressure value and pressure threshold and/or braking valve for vehicle before certain braking valve for vehicle after upstream pressure value and/or braking valve for vehicle
Pressure threshold afterwards at least controls corrective action in the pressure source of the braking valve for vehicle.
Optionally, pressure value is less than the parking system before braking valve for vehicle of the above-mentioned control device for detecting acquisition when the institute
Pressure value is less than the parking braking downstream pressure when dynamic upstream pressure threshold value and/or after the braking valve for vehicle of acquisition detects in the institute
When threshold value, controls above-mentioned parking brake and generate brake force.
Optionally, when pressure value is less than pressure threshold before the braking valve for vehicle before the braking valve for vehicle that acquisition detects in the institute
And/or pressure value is less than after the braking valve for vehicle when pressure threshold after the braking valve for vehicle that acquisition detects in the institute, above-mentioned control
For controlling, above-mentioned parking brake generates brake force to device and above-mentioned control device is additionally operable to control the gear of the crane
Position is adjusted to neutral gear.
Optionally, above-mentioned control device is connected with the chassis logic controller suitable for adjusting the crane gear, and
When pressure value is less than pressure threshold before the braking valve for vehicle before the braking valve for vehicle that acquisition detects in the institute and/or when the institute is detected
Pressure value is less than when pressure threshold, above-mentioned control device is controlled for exporting after the braking valve for vehicle after the braking valve for vehicle of acquisition
Voltage is to chassis logic controller adjusting the gear of the crane to neutral gear.
Optionally, above-mentioned control device includes chassis programmable logic controller (PLC) and/or programmable logic controller (PLC) of getting on the bus.
Optionally, above-mentioned pressure-detecting device includes press detection sensor and/or pressure detection switch.
Optionally, above-mentioned braking valve for vehicle includes parking braking electric proportional valve.
On the other hand the embodiment of the present invention provides a kind of wheel-mounted crane, include the monitoring of above-mentioned crane brake state
System.
In the above-mentioned technical solutions, it is examined by the pressure for detecting the brake pressure parameter to obtain the hydraulic brake valve
Device is surveyed, is suitable for prompting the on-position suggestion device of on-position to driver and for according to the braking for detecting acquisition
Pressure parameter at least controls the control device that above-mentioned on-position suggestion device executes on-position prompt operation so that driver
The on-position of the brake circuit of crane can be understood in time, and the on-position that can be directed to crane in time is taken accordingly
Measure security risk caused by effectively to reduce due to brake fault.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Description of the drawings
Attached drawing is to be used to provide further understanding of the present invention, an and part for constitution instruction, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 shows the structural schematic diagram of the brake circuit of crane in the prior art；
Fig. 2 shows be one embodiment of the invention crane brake state monitoring system structural schematic diagram；
Fig. 3 shows the structural schematic diagram of the monitoring system of the crane brake state of another embodiment of the present invention；
Fig. 4 shows the monitoring system of the crane brake state of further embodiment of this invention in hydraulic mechanism part
Structural schematic diagram；
Fig. 5 shows structure of the monitoring system in electric part of the crane brake state of further embodiment of this invention
Schematic diagram.
Reference sign
101,201 brake pumps 102,202 high pressure filters
103,203 prefill valve 1041-1043,2041-2043 accumulator
105,205 service brake valves 106,206 brake valve assembly
107,207 system oil return filters 108,208 running brakes
109,209 parking brake 40, the monitoring system of 50 crane brake states
401,501 pressure-detecting devices 402,502 on-position suggestion devices
403,503 control device SW1-SW4 pressure detection switch
301 park brake switch 308 are got on the bus programmable logic controller
306 chassis programmable logic controller (PLC), 307 gear box electrical control unit
H1-H5 indicator light BZ buzzers
Y3 parking braking solenoid valves
Specific implementation mode
The specific implementation mode of the present invention is described in detail below in conjunction with attached drawing.It should be understood that this place is retouched
The specific implementation mode stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
Referring to Fig. 2 shows be one embodiment of the invention crane brake state monitoring system structural schematic diagram,
Crane using the monitoring system 40 of crane brake state includes brake apparatus and is connected with the brake apparatus
Hydraulic brake valve, the monitoring system 40 include：Pressure-detecting device 401, on-position suggestion device 402 and control device
403, the wherein pressure-detecting device 401 more specifically should for detecting to obtain the brake pressure parameter of the hydraulic brake valve
Pressure-detecting device 401 can be that press detection sensor can also be pressure detection switch；The control device 403 is used for basis
It detects the brake pressure state modulator on-position suggestion device 402 obtained and executes on-position prompt operation, more specifically
The control device 403 can be independently of the additional of the original control device of crane (such as chassis controller, upper vehicle controller)
Attached Processor can also be one in the original control device of crane after being further improved based on technical solution of the present invention
Or it is multiple.
It is understood that on-position prompt operation can be the prompt behaviour for the braking effective status of crane
Make, can also be the prompt operation for crane brake in vain or under malfunction, should not limit herein.The on-position
The type of suggestion device 402 should not limit, and can be sound prompt device (such as loudspeaker, buzzer), can also be that light sensation carries
Showing device (such as warning light, display) can also be mechanical suggestion device (such as movable device), as long as the on-position
Suggestion device 402 can execute corresponding braking prompt operation according to the on-position of crane.As a result, through the invention
Embodiment enables crane driver to monitor in time and understands the on-position of crane, is more advantageous to driver according to working as
Preceding on-position makes correct crane operation decision, reduces the security risk that crane drives；In one case, it is answering
In crane with the monitoring system of the embodiment of the present invention, cause when pressure release failure occurs in the parking brake loop of the crane
It, can be effectively to parking brake loop using the on-position suggestion device of the embodiment of the present invention when parking braking can not release
Execute actuation of an alarm so that driver can directly know that the pressure release failure moves ahead without hanging shelves by force, can effectively avoid
Economic loss caused by brake(-holder) block damage.
The structural representation of the monitoring system of the crane brake state of another embodiment of the present invention is shown referring to Fig. 3
Figure, the crane using the monitoring system 50 of crane brake state include brake apparatus and are connected with the brake apparatus
Hydraulic brake valve, which includes：Pressure-detecting device 501, on-position suggestion device 502 and control device
503, the associated description about pressure-detecting device 501, on-position suggestion device 502 and control device 503 is referred to
For the description of embodiment illustrated in fig. 1, related identical part is not repeated here in this embodiment.Embodiment illustrated in fig. 2 phase
Than in embodiment illustrated in fig. 1, difference lies in：Control device 503 in embodiment illustrated in fig. 2 is in addition to that can control on-position prompt
Device 502 executes except on-position prompt operation, which can also join according to the brake pressure obtained is detected
Number control brake apparatus executes braking maneuver.It should be noted that the control device 503 in the embodiment of the present invention is according to being examined
It surveys the brake pressure state modulator brake apparatus execution braking maneuver obtained and can also be indirect control brake apparatus, the i.e. control
Device 503 processed is connected to the hydraulic brake valve of control brake apparatus between according to the brake pressure state modulator obtained is detected
Connect the control to brake apparatus of realization.As a result, by the preferred embodiment shown in Fig. 2 relative to Fig. 1 in addition to Fig. 1
Shown in other than the technique effect that has of embodiment, brake apparatus can also be regulated and controled according to the on-position of crane, with
Automatically the on-position of crane is adjusted to desired braking state, can in time avoided under brake fault state because of driver
Maloperation caused by security risk and economic loss.
Show the monitoring system of the crane brake state of further embodiment of this invention in hydraulic mechanism portion referring to Fig. 4
The structural schematic diagram divided, as shown in figure 4, the hydraulic mechanism part in the embodiment of the present invention includes brake pump 201, high pressure filter
202, prefill valve 203, accumulator 2041-2043, service brake valve 205, parking braking valve assembly 206, system oil return filter
207, running brake 208, parking brake 209, the parking braking solenoid valve Y3 being contained in parking braking valve assembly 206.
By that by the simple comparison of Fig. 4 and Fig. 1, can know：Hydraulic mechanism part in the embodiment of the present invention is compared with the prior art
In brake circuit, the embodiment of the present invention also has pressure detection switch SW1-SW4, wherein one end of pressure detection switch SW1
It is connected to the rear (being connected between parking braking solenoid valve Y3 and parking brake 209) of parking braking solenoid valve Y3, is pressed
The front that one end of power detection switch SW2 and SW4 are connected to parking braking solenoid valve Y3 (is connected to prefill valve 203 and parking
Between braking electromagnetic valve Y3), therefore pressure detection switch SW1, SW2 and SW4 contribute to detect to obtain the parking system of crane
Dynamic pressure force parameter；And correspondingly, one end of pressure detection switch SW3 is connected to service brake valve 205, therefore the pressure detection switch
SW3 is for detecting to obtain the service brake pressure parameter of crane.The other end connection of pressure detection switch SW1-4 is originally
The electric part of the monitoring system of crane brake state shown in inventive embodiments, specifically can refer to retouching below for Fig. 5
It states.
Show the monitoring system of the crane brake state of further embodiment of this invention in electric part referring to Fig. 5
Structural schematic diagram, as shown in figure 5, the monitoring system of the crane brake state includes pressure detection switch SW1- in electric part
SW4 is described continuing with Fig. 4, and the other end of pressure detection switch SW1-SW4 is connected to chassis Programmable logical controller
Device 306, one end of the chassis programmable logic controller (PLC) 306 is connected to programmable logic controller (PLC) 308 of getting on the bus, the bottom of hereby based on
Disk programmable logic controller (PLC) is suitable for detect the pressure information obtained and is transferred to 308, and more specifically the chassis is programmable patrols
Connection volume between controller 306 and programmable logic controller (PLC) 308 of getting on the bus realized based on CAN bus mechanics of communication,
The output end for getting on the bus programmable logic controller (PLC) 308, which is connected to and is used to control, to be suitable for indicating crane brake shape to driver
The indicator light H1-H5 and buzzer BZ of state；The input terminal for getting on the bus programmable logic controller (PLC) 308 is additionally coupled to parking braking and opens
Close 301 and control power supply.As a result, this is got on the bus, programmable logic controller (PLC) 308 can be based on pressure detection switch SW1-SW4
Switching information the control indicator light H1-H5 and buzzer BZ of the pressure information and park brake switch 301 that are detected work to refer to
Show the on-position of crane.The output end of the chassis programmable logic controller (PLC) 306 is connected to parking control electric proportional valve Y3
It is connected to the gear box electrical control unit 307 suitable for adjusting crane shift with by CAN bus, as a result, the chassis can compile
Journey logic controller 306 can the pressure information based on the detected acquisitions of pressure detection switch SW1-SW4 pass through control parking control
The on-position of electric proportional valve Y3 and/or gear box electrical control unit 307 adjustment crane processed, it is preferable that can be achieved on automatic
Change ground to adjust the on-position of crane to desired braking state.
It below will be former to the work of the monitoring system of Fig. 4 and the crane brake state of the embodiment of the present invention shown in fig. 5
Reason and flow do further detailed elaboration：
Brake pump 201 gives braking system pressurising to setting pressure by prefill valve 203, is given by accumulator 2041,2042
Braking system pressurize, after brake system pressure drops to certain setup pressure value, prefill valve 203 is again started up pressurising, ensures system
Dynamic system has the pressure for reaching design requirement.
When driving, when driver steps on brake pedal, service brake valve 205 works, and hydraulic power oil is acted on to service brake
Device 208 forces crane brake.At this point, if pressure detection switch SW3 detects that pressure value is more than 10Mpa, pressure switch is closed,
Pressure detecting signal SW3 is input to programmable logic controller (PLC) 308 of getting on the bus, programmable logic controller (PLC) 308 of getting on the bus output control
Signal makes indicator light H1 bright, and the status display that correspondingly H1 is lighted indicates that service brake is effective.
When parking, park brake switch 301 is opened so that solenoid valve Y3 obtains electric and parking brake loop power oil-duct and cuts
Disconnected, parking brake 209 resets under the operation of spring force generates brake force, vehicle braking.Indicator light H2 is lighted at this time；Accordingly
Ground, the state which lights indicate parking braking.
In normally travel, when parking circuit is broken down or pipeline is revealed, when Y3 upstream pressures are less than
13.5Mpa, pressure detection switch SW2, which are acted, makes pressure detecting signal SW2 and the disconnection of programmable logic controller (PLC) 308 of getting on the bus,
Programmable logic control unit of getting on the bus at this time device 308 is by logical operation and exports corresponding control signal so that indicator light H3
It lights, the interrupted buzzings of buzzer BZ；Correspondingly, which lights, and the interrupted buzzing states of buzzer H6 indicate that parking braking system is owed
Pressure can not hang shelves driving at this time.
When Y3 upstream pressures are less than 10Mpa, pressure detection switch SW4 act so that pressure detecting signal SW4 signals with
Programmable logic controller (PLC) 308 of getting on the bus disconnects, and programmable logic controller (PLC) 308 of getting on the bus at this time is answered by logical operation and the output phase
Control signal, indicator light H4 lights, and buzzer H6 continues buzzing, indicates parking brake loop pressure wretched insufficiency；Correspondingly,
The state instruction should start emergency braking, and programmable logic controller (PLC) 308 of getting on the bus at this time sends an instruction to that chassis is programmable to be patrolled
Controller 306 is collected, then programmable logic controller (PLC) 306 output voltage in chassis gives solenoid valve Y3, parking brake 209 to generate system
Power, at the same chassis programmable logic controller (PLC) 306 by instruction issue gear box electrical control unit 307 so that gearbox skip gear with
Cut off power transmission so that enabled while emergency braking gearbox skip keep off, brake force can be effectively prevent excessive and
Brake disc is caused to damage.
When Y3 downstream pressure is higher than 10Mpa, pressure detecting signal SW1 signals input to programmable logic controller (PLC) of getting on the bus
308, programmable logic controller (PLC) 308 of getting on the bus at this time is by logical operation and exports corresponding control signal so that indicator light H5
It lights；Correspondingly, indicator light H5 illuminating states indicate that parking brake has already turned on, and allow to hang shelves driving；
When Y3 downstream pressure is less than 10Mpa, pressure detection switch SW1, which is acted, to be made pressure detection switch SW1 and gets on the bus
Programmable logic controller (PLC) 308 disconnects, and programmable logic controller (PLC) 308 of getting on the bus at this time is by logical operation and exports corresponding control
Signal processed so that indicator light H4 flickers and buzzer BZ continues buzzing, and indicator light H4 flickers and buzzer BZ continues buzzing
State indicates parking brake loop pressure wretched insufficiency；Correspondingly, which should start emergency braking, programmable patrol of getting on the bus
It collects controller 308 and sends an instruction to chassis programmable logic controller (PLC) 306, then chassis programmable logic controller (PLC) 306 is defeated
Go out voltage and give solenoid valve Y3, parking brake 209 generates brake force, while chassis programmable logic controller (PLC) 306 sends out instruction
To gear box electrical control unit 307 so that gearbox skip gear is to cut off power transmission.
As a result, by the description of the above-mentioned operation principle for system of the embodiment of the present invention it is known that the pressure detecting
Although switch SW2 and SW3, in the front of parking braking solenoid valve Y3, pressure detection switch SW2 is to be directed to be detected
The comparison and judgement of the upstream pressure signal of acquisition and the first pressure information threshold of 13.5Mpa, and pressure detection switch SW3 is
Comparison for the second pressure information threshold of the pressure signal and 10Mpa acquired and judge to realize programmable patrol of getting on the bus
It collects controller 308 and realizes that hierarchical detection is prompted correspondingly to select different instructions to act for detected upstream pressure signal
Combination give driver's prompt, enable to driver to obtain the on-position of more accurately crane.And in parking system
Pressure detecting is respectively set in the front and back of moving electromagnetic valve Y3, is more advantageous to the concerned brake state that driver clearly understands crane
Information.Foregoing description through this embodiment, it may be determined that the application of the embodiment of the present invention efficiently solves braking system faults
The key problems such as detection and alarm, emergency braking, and emergency braking is executed automatically to avoid follow-up bigger when failure happens suddenly
Accident occur caused by loss.Further, since chassis programmable controller and programmable controller of getting on the bus have been
The component being already equipped in heavy-duty machine, therefore the implementation of the embodiment of the present invention is in the base for realizing the monitoring to the on-position of crane
The space of crane will not be also additionally occupied on plinth, and need not consume additional hardware cost.
It is understood that the normally opened signal or normally closed signal of pressure detection switch in the embodiment of the present invention to trigger on
Vehicle programmable logic controller (PLC) 308 and the control execution action of chassis programmable logic controller (PLC) 306 are merely exemplary, with triggering
The appropriate deformation of the normally opened signal or normally closed signal about the pressure detection switch of controller control work should also be as being to belong to
Protection scope of the present invention.Also, the quantity of the pressure detection switch in the embodiment of the present invention is only used as example, pressure inspection
The quantity of slowdown monitoring switch should not limit the protection domain that the present invention is implemented and pressure detection switch SW1-SW4 can be by pressing
Force detection sensor is replaced；Further, the indicator light in the embodiment of the present invention and buzzer can also have police by other
The device being shown as is replaced and the bright sudden strain of a muscle of the indicator light described in the embodiment of the present invention corresponding to specific on-position
Action and the buzzing of buzzer action are merely exemplary, and the specific combination of the bright snap action and buzzing action may correspond to
Other on-positions, and the simple deformation acted for the bright snap action and buzzing should also be as belonging to institute of the embodiment of the present invention
The protection domain covered.
The embodiment of the present invention also provides a kind of wheel-mounted crane, which includes Fig. 2 or shown in Fig. 3 liftings
The monitoring system 40 or 50 of brake status, so that the wheel-mounted crane that the embodiment of the present invention is provided has above-mentioned
The technique effect that the monitoring system of heavy-duty machine on-position should have, therefore the specific technical solution and technology of the wheel-mounted crane
Effect is referred to the description of above-described embodiment, therefore not in this to go forth.
The preferred embodiment of the present invention is described in detail above in association with attached drawing, still, the present invention is not limited to above-mentioned realities
The detail in mode is applied, within the scope of the technical concept of the present invention, a variety of letters can be carried out to technical scheme of the present invention
Monotropic type, these simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.
Claims (12)
1. a kind of monitoring system of crane brake state, which includes brake apparatus, which includes that driving is made
Dynamic device and parking brake, and the hydraulic brake valve that is connected with the brake apparatus, the hydraulic brake valve include and the row
The service brake valve that vehicle brake is connected and the braking valve for vehicle being connected with the parking brake, which is characterized in that the prison
Control system includes：
The first pressure detection device being connect with the service brake valve, for detecting to obtain the driving of the service brake valve
Brake pressure value, and
The second pressure detection device being connect with the braking valve for vehicle, for detecting to obtain the parking of the braking valve for vehicle
Brake pressure value；
On-position suggestion device；
Control device is compared for that will detect the service brake pressure value obtained and driving pressure threshold with determining corresponding
Service brake comparison result, and will detect parking braking pressure value and the parking braking pressure threshold obtained compare with
Determine corresponding parking braking comparison result, and
The control device is additionally operable to control the system respectively according to the service brake comparison result and parking braking comparison result
Dynamic condition prompting device executes corresponding on-position prompt operation.
2. monitoring system according to claim 1, it is characterised in that：
The control device, for being executed according to on-position suggestion device described in the brake pressure state modulator for detecting acquisition
On-position prompt operation, and
The control device is additionally operable to execute braking maneuver according to detecting the brake pressure state modulator brake apparatus obtained.
3. monitoring system according to claim 1, it is characterised in that：
The on-position suggestion device includes buzzer and/or indicator light, and
The control device is held for controlling the buzzer according to the service brake comparison result and/or parking braking comparison result
Row buzzing acts and/or controls the indicator light and executes bright snap action.
4. monitoring system according to claim 1, it is characterised in that：
The parking braking pressure threshold includes multiple classification parking braking pressure thresholds；And
The on-position suggestion device is configured to executable corresponding to the multigroup of the multiple classification parking braking pressure threshold
Unique on-position prompt operation,
The wherein described on-position suggestion device is used for according to acquired parking braking pressure value and the multiple classification parking
Brake pressure threshold selects an execution phase in the multigroup on-position prompt operation that can perform from the on-position suggestion device
The on-position prompt operation answered.
5. monitoring system according to claim 1, it is characterised in that：
The second pressure detection device is connected to the input terminal and/or output end of the braking valve for vehicle, and
The parking braking pressure value that the second pressure detection device is detected is the parking braking of the braking valve for vehicle
Pressure value after upstream pressure value and/or braking valve for vehicle,
Wherein, the control device is used for according to after pressure value before the braking valve for vehicle for detecting acquisition and/or braking valve for vehicle
Pressure value and pressure threshold after pressure threshold before certain braking valve for vehicle and/or braking valve for vehicle, at least control corrective action
In the pressure source of the braking valve for vehicle.
6. monitoring system according to claim 5, it is characterised in that：
The control device is used for the pressure value before the braking valve for vehicle that acquisition detects in the institute and is less than the parking braking upstream pressure
When pressure value is less than pressure threshold after the braking valve for vehicle when threshold value and/or after the braking valve for vehicle that acquisition detects in the institute, control
It makes the parking brake and generates brake force.
7. monitoring system according to claim 5, which is characterized in that when the parking braking upstream pressure of acquisition detects in the institute
Value be less than the braking valve for vehicle before pressure threshold when and/or pressure value is stayed less than this after the braking valve for vehicle of acquisition detects in the institute
After vehicle brake valve when pressure threshold,
The control device generates brake force for controlling the parking brake, and
The control device is additionally operable to control and adjusts the gear of the crane to neutral gear.
8. monitoring system according to claim 7, it is characterised in that：
The control device is connected with the chassis programmable logic controller (PLC) suitable for adjusting the crane gear, and
When pressure value is less than pressure threshold before the braking valve for vehicle before the braking valve for vehicle that acquisition detects in the institute and/or when the institute
Pressure value is less than when pressure threshold, the control device is for exporting after the braking valve for vehicle after detecting the braking valve for vehicle obtained
Voltage is controlled to chassis programmable logic controller (PLC) adjusting the gear of the crane to neutral gear.
9. monitoring system according to claim 1, which is characterized in that the control device includes chassis programmable logic control
Device processed and/or programmable logic controller (PLC) of getting on the bus.
10. monitoring system according to claim 1, which is characterized in that the first pressure detection device and/or described
Two pressure-detecting devices include press detection sensor and/or pressure detection switch.
11. monitoring system according to claim 3, which is characterized in that the braking valve for vehicle includes parking braking electricity ratio
Example valve.
12. a kind of wheel-mounted crane, which is characterized in that including the crane brake state described in any one of claim 1-11
Monitoring system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611244182.2A CN106809743B (en) | 2016-12-29 | 2016-12-29 | The monitoring system and wheel-mounted crane of crane brake state |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611244182.2A CN106809743B (en) | 2016-12-29 | 2016-12-29 | The monitoring system and wheel-mounted crane of crane brake state |
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| Publication Number | Publication Date |
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| CN106809743A CN106809743A (en) | 2017-06-09 |
| CN106809743B true CN106809743B (en) | 2018-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611244182.2A Active CN106809743B (en) | 2016-12-29 | 2016-12-29 | The monitoring system and wheel-mounted crane of crane brake state |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109869477B (en) * | 2019-03-28 | 2024-01-26 | 徐州徐工施维英机械有限公司 | Gear box gear shift protection system and engineering machinery |
| CN114475561A (en) * | 2021-12-23 | 2022-05-13 | 中联重科股份有限公司 | Drive control method, processor and device for engineering equipment and engineering equipment |
| CN114906111A (en) * | 2022-06-09 | 2022-08-16 | 广西柳工机械股份有限公司 | Parking brake control system, control method thereof and loader |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201914233U (en) * | 2011-01-19 | 2011-08-03 | 三一重工股份有限公司 | Control device for parking brake of engineering machinery and parking brake |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3073151B2 (en) * | 1995-12-12 | 2000-08-07 | 日立建機株式会社 | Hydraulic control device for construction machinery |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201914233U (en) * | 2011-01-19 | 2011-08-03 | 三一重工股份有限公司 | Control device for parking brake of engineering machinery and parking brake |
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