CN116692685A - Control method for crane, processor and crane - Google Patents
Control method for crane, processor and crane Download PDFInfo
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- CN116692685A CN116692685A CN202310449388.2A CN202310449388A CN116692685A CN 116692685 A CN116692685 A CN 116692685A CN 202310449388 A CN202310449388 A CN 202310449388A CN 116692685 A CN116692685 A CN 116692685A
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- 238000000034 method Methods 0.000 title claims abstract description 44
- 230000009471 action Effects 0.000 claims abstract description 55
- 230000007246 mechanism Effects 0.000 claims abstract description 18
- 230000001276 controlling effect Effects 0.000 claims description 16
- 239000000725 suspension Substances 0.000 claims description 12
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 5
- 230000000875 corresponding effect Effects 0.000 description 22
- 230000006870 function Effects 0.000 description 14
- 238000010586 diagram Methods 0.000 description 11
- 238000004590 computer program Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
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- 230000003287 optical effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
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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
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
- B66C13/22—Control systems or devices for electric drives
- B66C13/30—Circuits for braking, traversing, or slewing motors
-
- 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
- B66C13/16—Applications of indicating, registering, or weighing devices
-
- 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
- B66C13/48—Automatic control of crane drives for producing a single or repeated working cycle; Programme control
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/64—Jibs
- B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
- B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/82—Luffing gear
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Control And Safety Of Cranes (AREA)
Abstract
The application relates to the technical field of engineering machinery, and discloses a control method for a crane, a processor and the crane. The crane includes: a one-key start-stop main switch, a first handle enabling switch, a second handle enabling switch and a working motor; the method comprises the following steps: controlling the crane to be electrified; acquiring states of a one-key start-stop main switch, a first handle enabling switch and a second handle enabling switch; when the state of the one-key start-stop total switch is on and the state of at least one of the first handle enabling switch and the second handle enabling switch is on, the operation motor is controlled to start so as to execute the action of the action mechanism corresponding to the operation motor. The starting of the operation motor is irrelevant to the contactor in the operation motor controller, so that the impact on the electrical control components and circuits in the crane is small, the probability of burning the electrical control components and circuits is reduced, the service life of the electrical control components and circuits is prolonged, and the use safety of the crane is improved.
Description
Technical Field
The application relates to the technical field of engineering machinery, in particular to a control method for a crane, a processor and the crane.
Background
Currently, the starting and stopping of a crane operation motor is controlled by an ignition key switch in a cab. When the operation motor is to be started, the ignition key switch is twisted from an ON gear to a START gear, a contactor in the operation motor controller is connected, three-phase alternating current is output, and the operation motor is started; after the ignition key switch is released, the ignition key switch is reset to the ON range. ON the contrary, when the operation motor is to be shut down, the ignition key switch is twisted from the ON gear to the OFF gear, the contactor inside the operation motor controller is disconnected, the output of the three-phase alternating current is shut down, and the operation motor stops working.
The crane is taken as an off-road tire crane for illustration, under the normal condition, the operation time of the off-road tire crane is discontinuous, if the hoisting operation is not carried out for a long time, the operation motor needs to be stopped for saving the energy consumption of the vehicle, and when the hoisting operation needs to be carried out again, the operation motor is started again, and then an operator needs to frequently twist an ignition key switch. The power of the operation motor is larger, the working current is correspondingly larger, and the contactor in the operation motor controller is frequently disconnected and connected, so that the service life of the electric control components and circuits in the crane is possibly influenced, even the electric control components and circuits are burnt, the vehicle faults and safety accidents are caused, and the safety is lower.
Disclosure of Invention
In order to overcome the defects in the prior art, the embodiment of the application provides a control method for a crane, a processor and the crane.
In order to achieve the above object, a first aspect of the present application provides a control method for a crane, the crane comprising: a one-key start-stop main switch, a first handle enabling switch, a second handle enabling switch and a working motor; the method comprises the following steps:
controlling the crane to be electrified;
acquiring states of a one-key start-stop main switch, a left handle enabling switch and a right handle enabling switch;
when the state of the one-key start-stop total switch is on and the state of at least one of the first handle enabling switch and the second handle enabling switch is on, the operation motor is controlled to start so as to execute the action of the action mechanism corresponding to the operation motor.
In the embodiment of the application, the crane further comprises a variable frequency speed regulating device, and the method further comprises the following steps:
acquiring working pressure of the crane under the conditions that the state of the one-key start-stop main switch is on, the state of the first handle enabling switch is off and the state of the second handle enabling switch is off;
and under the condition that the working pressure is lower than the preset pressure and the duration time of the working pressure lower than the preset pressure exceeds the first preset duration time, the frequency of the three-phase electricity in the crane is adjusted to the preset frequency by utilizing the variable-frequency speed regulating device so as to shut down the working motor.
In the embodiment of the application, the operation motor is a hoisting operation motor;
the action mechanism comprises at least one of the following: the main winch, the auxiliary winch, the turntable and the suspension arm;
the action of the action mechanism comprises at least one of the following: lifting action of the auxiliary winch, rotation action of the turntable, lifting action of the main winch, amplitude variation action of the boom and telescoping action of the boom.
In an embodiment of the present application, the crane further includes:
the first pressure sensor is positioned at the output end of the working valve corresponding to the main winch;
the second pressure sensor is positioned at the output end of the working valve corresponding to the auxiliary winch;
the third pressure sensor is positioned at the output end of the working valve corresponding to the turntable;
the fourth pressure sensor is positioned at the output end of the working valve corresponding to the suspension arm;
acquiring the working pressure of the crane comprises the following steps:
acquiring a first working pressure of a first pressure sensor, a second working pressure of a second pressure sensor, a third working pressure of a third pressure sensor and a fourth working pressure of a fourth pressure sensor;
the case where the operating pressure is lower than the preset pressure and the duration of time of lower than the preset pressure exceeds the first preset duration includes:
in the case where the first operating pressure, the second operating pressure, the third operating pressure, and the fourth operating pressure are all lower than the preset pressure, and the duration of the lower than the preset pressure exceeds the first preset duration.
In an embodiment of the present application, the crane further includes: the first handle and second handle, first handle enable the switch and set up on first handle, second handle enable the switch and set up on the second handle.
In the embodiment of the application, the crane further comprises a key switch and a contactor arranged in the operation motor controller corresponding to the operation motor;
controlling the crane to power up comprises:
controlling a key switch to twist from an OFF gear to an ON gear so as to electrify the crane;
the method further comprises the steps of:
under the condition that the state of the one-key START-stop main switch is off, the state of the key switch is from an ON gear to a START gear, the duration of the key switch in the START gear exceeds a second preset duration, and the state of the contactor is off, the contactor is controlled to be ON so as to START the operation motor.
When the state of the one-key start-stop master switch is OFF and the state of the key switch is changed from an ON gear to an OFF gear, the contactor is controlled to be opened to stop the operation motor.
In the embodiment of the application, the method further comprises the following steps:
when the state of the one-touch start-stop total switch is on and the state of the contactor is off, the contactor is controlled to be on.
A second aspect of the application provides a processor configured to perform the control method for a crane as described above.
A third aspect of the application provides a crane comprising: a one-key start-stop main switch, a first handle enabling switch, a second handle enabling switch and a working motor; and
the processor described above.
In an embodiment of the application, the crane comprises an electric off-road tire crane.
When the state of the one-key start-stop main switch is on, the one-key start-stop function of the operation motor is started, and when the crane is in a power-on state, the operation motor can be controlled to start only by switching on at least one of the first handle enabling switch and the second handle enabling switch, so that the action of an action mechanism corresponding to the operation motor is implemented. In the embodiment of the application, the starting and the stopping of the operation motor are irrelevant to the contactor in the operation motor controller, and the setting of the contactor can be canceled or the contactor can be always in the on state, so that the situation that the contactor is frequently disconnected and connected can not occur when the operation motor needs to be frequently started, the operation motor controller automatically controls the starting of the operation motor according to the logic states of the one-key starting and stopping master switch, the first handle enabling switch and the second handle enabling switch, so that the impact on electric control components and circuits in the crane is small, the burning probability of the electric control components and circuits is greatly reduced, the service life of the electric control components and circuits is prolonged, and the use safety of the crane is improved.
Drawings
The accompanying drawings are included to provide a further understanding of embodiments of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain, without limitation, the embodiments of the application. In the drawings:
fig. 1 schematically shows a control circuit diagram of a work motor in the prior art;
fig. 2 schematically shows a control circuit diagram of a work motor according to an embodiment of the application;
fig. 3 schematically shows a flow chart of a control method for a crane according to an embodiment of the application;
fig. 4 schematically shows a control flow chart of the start-up and shut-down of a work motor according to an embodiment of the application.
Description of the reference numerals
S1, a key switch; 10-contactors;
11-an operation motor controller; 12-an operation motor;
s2, a main switch is started and stopped by one key; s3-a first handle enabling switch;
s4-a second handle enabling switch; 13-a variable-frequency speed regulating device.
Detailed Description
The following describes the detailed implementation of the embodiments of the present application with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the application, are not intended to limit the application.
In addition, if a directional instruction (such as up, down, left, right, front, and rear … …) is included in the embodiment of the present application, the directional instruction is merely used to explain a relative positional relationship, a movement condition, and the like between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional instruction is correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present application, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present application.
In order to better understand the beneficial effects of the control method for a crane provided by the embodiment of the present application, an example of a control method for starting and stopping a working motor 12 of a crane in the prior art is first described, fig. 1 schematically illustrates a control circuit diagram of the working motor in the prior art, and fig. 1 mainly refers to a key switch S1, a contactor 10, a working motor controller 11 and a working motor 12, where the contactor 10 may be a KM1 contactor, and the working motor 12 may be a hoisting working motor.
In the prior art, the start and stop of the work motor 12 is controlled by an ignition key switch (i.e., key switch S1) in the crane cab. When the operation motor 12 is to be started, the key switch S1 is twisted from an ON gear to a START gear, the contactor 10 in the operation motor controller 11 is connected, three-phase alternating current is output, and the operation motor 12 is started; after releasing the key switch S1, the key switch S1 is reset to the ON range. ON the other hand, when the work motor 12 is to be turned OFF, the key switch S1 is turned from the ON position to the OFF position, the contactor 10 is turned OFF, the output of the three-phase ac power is turned OFF, and the work motor 12 stops.
In the case of the off-road tire crane, if the hoisting operation is not performed for a long time, the operation motor 12 needs to be turned off, and when the hoisting operation needs to be restarted, the operation motor 12 needs to be restarted, and the operator needs to frequently twist the key switch S1, so that the starting and the stopping of the operation motor 12 in the prior art are controlled completely by the key switch S1. The power of the operation motor 12 is larger, the working current is correspondingly larger, and the contactor 10 in the operation motor controller 11 is frequently disconnected and connected, so that the service life of the electric control components and circuits in the crane is possibly influenced, even the electric control components and circuits are burnt, the vehicle faults and safety accidents are caused, and the safety is lower.
To overcome the deficiencies of the prior art, the embodiment of the present application provides a control method for a crane, and before that, first, a control circuit diagram of a working motor 12 according to the embodiment of the present application is described, fig. 2 schematically shows a control circuit diagram of a working motor according to the embodiment of the present application, and referring to fig. 2, the crane includes: a one-touch start-stop main switch S2, a first handle enable switch S3, a second handle enable switch S4, and a work motor 12. Illustratively, the first handle enable switch S3 may be a left handle enable switch and the second handle enable switch S4 may be a right handle enable switch S4.
Fig. 3 schematically shows a flow chart of a control method for a crane according to an embodiment of the application. As shown in fig. 3, in an embodiment of the present application, there is provided a control method for a crane, including the steps of:
step 301, controlling a crane to be electrified;
step 302, acquiring the states of a one-touch start-stop main switch S2, a first handle enabling switch S3 and a second handle enabling switch S4;
in step 303, when the one-touch start/stop master switch S2 is turned on and at least one of the first and second handle enable switches S3 and S4 is turned on, the work motor 12 is controlled to start so as to execute the operation of the corresponding operation mechanism of the work motor 12.
Referring to fig. 2, the one-key start-stop master switch S2, the left handle enable switch S3, and the right handle enable switch S4 are connected to the operation motor controller 11, and the operation motor controller 11 controls the output of the operation motor 12 corresponding to the three-phase alternating current through logic operation. In an embodiment, the first handle enabling switch S3 and the second handle enabling switch S4 are connected to a pilot solenoid valve of a hydraulic control of a crane, and the pilot solenoid valve is turned on by the first handle enabling switch S3 and/or the second handle enabling switch S4, and then the corresponding action mechanism is actuated.
When the state of the one-key start-stop main switch S2 is on, the one-key start-stop function of the operation motor 12 is started, and when the crane is in a power-on state, the operation motor 12 can be controlled to start by only switching on at least one of the first handle enabling switch S3 and the second handle enabling switch S4 so as to realize the action of an action mechanism corresponding to the operation motor 12. In the embodiment of the present application, the start and stop of the operation motor 12 are irrelevant to the contactor 10 in the operation motor controller, and the setting of the contactor 10 may be cancelled, or the contactor 10 may be always in an on state, so that when the operation motor 12 needs to be frequently started, the situation that the contactor 10 is frequently disconnected and connected will not occur, and the operation motor controller 11 automatically controls the start of the operation motor 12 according to the logic states of the one-key start-stop master switch S2, the first handle enabling switch S3 and the second handle enabling switch S4, so that the impact on both the electrical control components and the circuits in the crane is small, the probability of burning the electrical control components and the circuits is greatly reduced, the service life of the electrical control components and the circuits is prolonged, and the service safety of the crane is improved.
In an embodiment, the crane further comprises a variable frequency governor 13, the method further comprising: acquiring the working pressure of the crane under the conditions that the state of the one-key start-stop main switch S2 is on, the state of the first handle enabling switch S3 is off and the state of the second handle enabling switch S4 is off; when the working pressure is lower than the preset pressure and the duration of the lower than the preset pressure exceeds the first preset duration, the frequency of the three-phase electricity in the crane is adjusted to the preset frequency by utilizing the variable-frequency speed regulating device 13 so as to shut down the working motor 12.
The signal of the pressure sensor is also led into the working motor controller 11, fig. 4 schematically shows a control flow chart of the start-up and shut-down of the working motor according to an embodiment of the application, and as can be seen in fig. 4, the preset pressure may be 5bar, the first preset duration may be 5s, the working pressure of the crane is continuously lower than 5bar in the time range of 5s, which indicates that no operation of the crane is in progress, i.e. no power output requirement, and the working motor 12 may be automatically shut down. In the case where the state of the one-touch start-stop main switch S2 is on, the state of the first handle enable switch S3 is off, and the state of the second handle enable switch S4 is off, if the operating pressure of the crane is not lower than the preset pressure at this time or the duration of the lower than the preset pressure does not exceed the first preset duration, the work motor 12 is still in the started state.
In an embodiment, the crane further comprises: the first handle and the second handle, first handle enable switch S3 sets up on first handle, and second handle enable switch S4 sets up on the second handle. The first handle may be a left handle, the second handle may be a right handle, the first handle enable switch S3 may be a left handle enable switch, and the second handle enable switch S4 may be a right handle enable switch.
Because the left handle enabling switch is arranged on the left handle, the right handle enabling switch is arranged on the right handle, when the one-key start-stop function is started, an operator can easily and smoothly and naturally trigger the left handle enabling switch and/or the right handle enabling switch to be connected in a chapter mode when the operator holds the left handle and/or the right handle and wants to control the action of the action mechanism, thus the operator can successfully control the action of the action mechanism without specially searching the position of the left handle enabling switch and/or the right handle enabling switch or specially triggering the left handle enabling switch and/or the right handle enabling switch to be connected, the use and the control of the operator are greatly facilitated, and the time cost of the operator is saved.
In one embodiment, the work motor 12 is a hoist work motor. The action mechanism comprises: the device comprises a main winch, an auxiliary winch, a turntable and a suspension arm. The left handle can be used for operating the lifting action of the auxiliary winch and the turning action of the turntable, and the right handle can be used for operating the lifting action of the main winch, the amplitude variation action of the suspension arm and the telescopic action of the suspension arm. In the case where the state of the one-touch start-stop main switch S2 is on and the state of at least one of the first handle enable switch S3 and the second handle enable switch S4 is on, the work motor 12 is started, and then the operator can manipulate the first handle and/or the second handle to perform at least one of the following actions: lifting action of the auxiliary winch, rotation action of the turntable, lifting action of the main winch, amplitude variation action of the boom and telescoping action of the boom. These actions are mainly involved in the crane hoisting operation.
In the embodiment of the application, the left handle enabling switch is arranged on the left handle (specifically can be arranged at the handle of the left handle), the right handle enabling switch is arranged on the right handle (specifically can be arranged at the handle of the right handle), and when the state of the one-key start-stop main switch S2 is on, the one-key start-stop function is started; at this time, if an operator holds the left handle and/or the right handle to control the action of the action mechanism, the operator easily and naturally triggers the left handle enabling switch and/or the right handle enabling switch to be turned on simultaneously and in a chapter, and then starts the hoisting operation motor 12; if the operator releases the left handle and the right handle, the left handle enabling switch and the right handle enabling switch can be simultaneously and successfully controlled to be both disconnected, and then the operation motor 12 is automatically turned off according to the working pressure of the crane; thus greatly facilitating the use and control of operators. Illustratively, the setting of the contactor 10 may be canceled, or the contactor 10 may be in an on state at all times, and the work motor controller 11 automatically controls the start and stop of the work motor 12 according to the logic states of the one-touch start-stop main switch S2, the left handle enable switch, and the right handle enable switch.
The contactor 10 may be a KM1 contactor, and is exemplified by the KM1 contactor being always on, and when the one-key start-stop function is on, the three-phase alternating current of the work motor 12 is not cut off by directly opening the KM1 contactor inside the work motor controller 11 (may be simply referred to as three-phase current); instead, the contacts of the KM1 contactor are always in the engaged state (i.e., on state), and the operation motor 12 is turned off by controlling the frequency of the three-phase ac power (for example, controlling the frequency to 0) by the variable frequency speed regulator 13 inside the operation motor controller 11. Therefore, the contact of the KM1 contactor can be prevented from being frequently attracted and disconnected, the electrical control components and circuits are prevented from being burnt, and the use safety of the crane is improved.
In an embodiment, the crane further comprises:
the first pressure sensor is positioned at the output end of the working valve corresponding to the main winch;
the second pressure sensor is positioned at the output end of the working valve corresponding to the auxiliary winch;
the third pressure sensor is positioned at the output end of the working valve corresponding to the turntable;
the fourth pressure sensor is positioned at the output end of the working valve corresponding to the suspension arm;
acquiring the working pressure of the crane comprises the following steps: acquiring a first working pressure of a first pressure sensor, a second working pressure of a second pressure sensor, a third working pressure of a third pressure sensor and a fourth working pressure of a fourth pressure sensor;
the case where the operating pressure is lower than the preset pressure and the duration of time of lower than the preset pressure exceeds the first preset duration includes: in the case where the first operating pressure, the second operating pressure, the third operating pressure, and the fourth operating pressure are all lower than the preset pressure, and the duration of the lower than the preset pressure exceeds the first preset duration.
In one embodiment, the crane further comprises a key switch S1 and a contactor 10 disposed inside the operation motor controller 11 corresponding to the operation motor;
controlling the crane to power up comprises:
controlling a key switch to twist from an OFF gear to an ON gear so as to electrify the crane;
the method further comprises the steps of: when the state of the one-key START-stop master switch S2 is off, the state of the key switch S1 is from ON gear to START gear, the duration of the key switch S1 in the START gear exceeds a second preset duration, and the state of the contactor is off, the contactor 10 is controlled to be turned ON to START the operation motor 12;
when the state of the one-key start-stop master switch S2 is OFF and the state of the key switch S1 is changed from the ON gear to the OFF gear, the contactor 10 is controlled to be turned OFF to stop the work motor 12.
If the state of the one-key start-stop main switch S2 is off, the one-key start-stop function of the work motor 12 is turned off, and at this time, the start and stop of the work motor 12 can be controlled by the key switch S1. The second preset time period may be, for example, 1 second. When the key switch S1 is turned from OFF gear to ON gear, the electrical system of the crane is powered ON, and when the PLC (Programmable Logic Controller ) detects that the one-key START-stop master switch S2 is turned OFF, the key switch S1 is turned from ON gear to START gear, and the duration of the START signal exceeds 1 second (i.e., the duration of the key switch S1 in the START gear exceeds the second preset duration), the work motor 12 STARTs to operate. In the embodiment of the application, the validity detection function of the Start signal of the key switch is added, and the Start signal is determined to be a valid signal only when the duration of the Start signal exceeds the second preset duration, so that the situation that the key switch S1 is triggered by mistake can be prevented.
In an embodiment, the method further comprises: when the state of the one-touch start/stop master switch S2 is on and the state of the contactor 10 is off, the contactor 10 is controlled to be on.
If the state of the one-touch start-stop main switch S2 is on, the contactor 10 may be always on, and the work motor controller 11 automatically controls the start and stop of the work motor 12 according to the logic states of the first and second handle enable switches S3 and S4, without frequent turn-off and turn-on of the contactor 10.
It can be seen that, only when the state of the one-key start-stop master switch S2 is OFF and the state of the key switch S1 is from the ON gear to the OFF gear, the contactor 10 is turned OFF, and the other contactors 10 can be in a direct-ON state, so that when the operation motor 12 needs to be frequently started, the frequent turn-OFF and turn-ON of the contactor 10 cannot occur, the impact of electrical control components and circuits in the crane is small, the probability of burning out the electrical control components and circuits is greatly reduced, the service life of the crane is prolonged, and the use safety of the crane is improved.
In the embodiment of the application, a one-key start-stop main switch S2 is added, and when an operator needs to use a one-key start-stop function, the one-key start-stop main switch S2 can be switched on; the one-key start-stop master switch S2 is turned off without a one-key start-stop function, and then the normal start-stop operation of the crane is resumed (the start and stop of the work motor 12 can be controlled by the key switch S1).
In the embodiment of the application, aiming at the hoisting working condition that the working time is discontinuous or the hoisting operation is not carried out for a long time and the working motor 12 is required to be started and stopped frequently, a one-key starting and stopping function is introduced, so that the energy consumption of a crane can be saved, the instantaneous starting and stopping current impact of the working motor 12 when the working motor 12 is started and stopped frequently can be reduced, the service lives of the working motor 12 and other components are prolonged, and dangerous accidents are avoided.
An embodiment of the present application provides a processor configured to perform any one of the above embodiments for a control method of a crane.
The crane includes: a one-key start-stop main switch, a first handle enabling switch, a second handle enabling switch, and a work motor;
in particular, the processor may be configured to:
controlling the crane to be electrified;
acquiring states of a one-key start-stop main switch, a first handle enabling switch and a second handle enabling switch;
when the state of the one-key start-stop total switch is on and the state of at least one of the first handle enabling switch and the second handle enabling switch is on, the operation motor is controlled to start so as to execute the action of the action mechanism corresponding to the operation motor.
In an embodiment of the application, the crane further comprises a variable frequency governor device, and the processor is further configured to:
acquiring working pressure of the crane under the conditions that the state of the one-key start-stop main switch is on, the state of the first handle enabling switch is off and the state of the second handle enabling switch is off;
and under the condition that the working pressure is lower than the preset pressure and the duration time of the working pressure lower than the preset pressure exceeds the first preset duration time, the frequency of the three-phase electricity in the crane is adjusted to the preset frequency by utilizing the variable-frequency speed regulating device so as to shut down the working motor.
In the embodiment of the application, the operation motor is a hoisting operation motor;
the action mechanism comprises at least one of the following: the main winch, the auxiliary winch, the turntable and the suspension arm; the processor is further configured to:
the action of the action mechanism comprises at least one of the following: lifting action of the auxiliary winch, rotation action of the turntable, lifting action of the main winch, amplitude variation action of the boom and telescoping action of the boom.
In an embodiment of the present application, the crane further includes:
the first pressure sensor is positioned at the output end of the working valve corresponding to the main winch;
the second pressure sensor is positioned at the output end of the working valve corresponding to the auxiliary winch;
the third pressure sensor is positioned at the output end of the working valve corresponding to the turntable;
the fourth pressure sensor is positioned at the output end of the working valve corresponding to the suspension arm;
the processor is further configured to:
acquiring the working pressure of the crane comprises the following steps:
acquiring a first working pressure of a first pressure sensor, a second working pressure of a second pressure sensor, a third working pressure of a third pressure sensor and a fourth working pressure of a fourth pressure sensor;
the case where the operating pressure is lower than the preset pressure and the duration of time of lower than the preset pressure exceeds the first preset duration includes:
in the case where the first operating pressure, the second operating pressure, the third operating pressure, and the fourth operating pressure are all lower than the preset pressure, and the duration of the lower than the preset pressure exceeds the first preset duration.
In an embodiment of the present application, the crane further includes: the first handle and second handle, first handle enable the switch and set up on first handle, second handle enable the switch and set up on the second handle.
In the embodiment of the application, the crane further comprises a key switch and a contactor arranged in the operation motor controller corresponding to the operation motor;
the processor is configured to:
controlling the crane to power up comprises:
controlling a key switch to twist from an OFF gear to an ON gear so as to electrify the crane;
the processor is further configured to:
when the state of the one-key START-stop main switch is off, the state of the key switch is from an ON gear to a START gear, the duration of the key switch in the START gear exceeds a second preset duration, and the state of the contactor is off, the contactor is controlled to be connected so as to START the operation motor;
when the state of the one-key start-stop master switch is OFF and the state of the key switch is changed from an ON gear to an OFF gear, the contactor is controlled to be opened to stop the operation motor.
In an embodiment of the application, the processor is further configured to:
when the state of the one-touch start-stop total switch is on and the state of the contactor is off, the contactor is controlled to be on.
The embodiment of the application provides a crane, which comprises: a one-key start-stop main switch, a first handle enabling switch, a second handle enabling switch and a working motor; and
the processor described above.
In an embodiment of the application, the crane comprises an electric off-road tire crane.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In one typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include volatile memory in a computer-readable medium, random Access Memory (RAM) and/or nonvolatile memory, etc., such as Read Only Memory (ROM) or flash RAM. Memory is an example of a computer-readable medium.
Computer readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of storage media for a computer include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device. Computer-readable media, as defined herein, does not include transitory computer-readable media (transmission media), such as modulated data signals and carrier waves.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises an element.
The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and variations of the present application will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the application are to be included in the scope of the claims of the present application.
Claims (10)
1. A control method for a crane, characterized in that the crane comprises: a one-key start-stop main switch, a first handle enabling switch, a second handle enabling switch and a working motor; the method comprises the following steps:
controlling the crane to be electrified;
acquiring states of the one-key start-stop main switch, the first handle enabling switch and the second handle enabling switch;
and when the state of the one-key start-stop total switch is on and the state of at least one of the first handle enabling switch and the second handle enabling switch is on, controlling the operation motor to start so as to execute the action of the action mechanism corresponding to the operation motor.
2. The method of claim 1, wherein the crane further comprises a variable frequency governor, the method further comprising:
acquiring working pressure of the crane under the condition that the state of the one-key start-stop main switch is on, the state of the first handle enabling switch is off and the state of the second handle enabling switch is off;
and under the condition that the working pressure is lower than the preset pressure and the duration time of the working pressure is lower than the preset pressure exceeds the first preset time, the frequency of the three-phase electricity in the crane is adjusted to the preset frequency by utilizing the variable-frequency speed regulating device so as to stop the operation motor.
3. The method of claim 1, wherein the work motor is a hoist work motor;
the action mechanism comprises at least one of the following: the main winch, the auxiliary winch, the turntable and the suspension arm;
the action of the action mechanism comprises at least one of the following: the lifting action of the auxiliary winch, the turning action of the turntable, the lifting action of the main winch, the amplitude variation action of the suspension arm and the telescopic action of the suspension arm.
4. A method according to claim 3, wherein the crane further comprises:
the first pressure sensor is positioned at the output end of the working valve corresponding to the main winch;
the second pressure sensor is positioned at the output end of the working valve corresponding to the auxiliary winch;
the third pressure sensor is positioned at the output end of the working valve corresponding to the turntable;
the fourth pressure sensor is positioned at the output end of the working valve corresponding to the suspension arm;
the step of obtaining the working pressure of the crane comprises the following steps:
acquiring a first working pressure of the first pressure sensor, a second working pressure of the second pressure sensor, a third working pressure of the third pressure sensor and a fourth working pressure of the fourth pressure sensor;
the case where the working pressure is lower than a preset pressure and the duration of time of lower than the preset pressure exceeds a first preset duration includes:
and in the case that the first working pressure, the second working pressure, the third working pressure and the fourth working pressure are lower than a preset pressure and the duration of the lower than the preset pressure exceeds a first preset duration.
5. The method of claim 1, wherein the crane further comprises: the handle comprises a first handle and a second handle, wherein the first handle enabling switch is arranged on the first handle, and the second handle enabling switch is arranged on the second handle.
6. The method of claim 1, wherein the crane further comprises a key switch and a contactor disposed inside a work motor controller corresponding to the work motor;
the controlling the crane to power up comprises:
controlling the key switch to twist from an OFF gear to an ON gear so as to electrify the crane;
the method further comprises the steps of:
when the state of the one-key START-stop main switch is off, the state of the key switch is from an ON gear to a START gear, the duration of the key switch in the START gear exceeds a second preset duration, and the state of the contactor is off, the contactor is controlled to be connected so as to START the operation motor;
and when the state of the one-key start-stop main switch is OFF and the state of the key switch is from an ON gear to an OFF gear, the contactor is controlled to be opened so as to stop the operation motor.
7. The method of claim 6, wherein the method further comprises:
and controlling the contactor to be switched on when the state of the one-key start-stop total switch is switched on and the state of the contactor is switched off.
8. A processor, characterized by being configured to perform the control method for a crane according to any one of claims 1 to 7.
9. A crane, comprising: a one-key start-stop main switch, a first handle enabling switch, a second handle enabling switch and a working motor; and
the processor of claim 8.
10. The crane of claim 9, wherein the crane comprises an electric off-road tire crane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310449388.2A CN116692685A (en) | 2023-04-24 | 2023-04-24 | Control method for crane, processor and crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310449388.2A CN116692685A (en) | 2023-04-24 | 2023-04-24 | Control method for crane, processor and crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116692685A true CN116692685A (en) | 2023-09-05 |
Family
ID=87838220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310449388.2A Pending CN116692685A (en) | 2023-04-24 | 2023-04-24 | Control method for crane, processor and crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116692685A (en) |
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2023
- 2023-04-24 CN CN202310449388.2A patent/CN116692685A/en active Pending
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