CN114412303A - Hood opening and closing control method, control device, automatic opening and closing mechanism and mechanical equipment - Google Patents
Hood opening and closing control method, control device, automatic opening and closing mechanism and mechanical equipment Download PDFInfo
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- CN114412303A CN114412303A CN202210106907.0A CN202210106907A CN114412303A CN 114412303 A CN114412303 A CN 114412303A CN 202210106907 A CN202210106907 A CN 202210106907A CN 114412303 A CN114412303 A CN 114412303A
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- hood
- opening
- push rod
- closing
- lock body
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- 238000000034 method Methods 0.000 title claims abstract description 49
- 230000011664 signaling Effects 0.000 claims abstract description 8
- 238000006073 displacement reaction Methods 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 12
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- 238000005491 wire drawing Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B83/00—Vehicle locks specially adapted for particular types of wing or vehicle
- E05B83/16—Locks for luggage compartments, car boot lids or car bonnets
- E05B83/24—Locks for luggage compartments, car boot lids or car bonnets for car bonnets
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B81/00—Power-actuated vehicle locks
- E05B81/02—Power-actuated vehicle locks characterised by the type of actuators used
- E05B81/04—Electrical
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Abstract
The embodiment of the invention provides a hood opening and closing control method, a control device, an automatic opening and closing mechanism and mechanical equipment, and relates to the technical field of automatic machinery. The hood opening and closing control method comprises the steps of receiving opening and closing signals; controlling the lock body to be unlocked according to the opening and closing signal, and controlling the hood to move along the first direction after the lock body is unlocked so as to open the hood; or controlling the hood to move along the second direction according to the opening and closing signal so as to close the hood. The automatic opening and closing mechanism can be applied to mechanical equipment or various vehicles, automatic opening and closing of the hood are achieved, the control method is simple and feasible, the structure is reliable, the automation and intelligence degrees are high, unmanned hood opening and closing can be achieved, and opening and closing efficiency is high.
Description
Technical Field
The invention relates to the technical field of automatic machinery, in particular to a hood opening and closing control method, a control device, an automatic opening and closing mechanism and mechanical equipment.
Background
Mechanical equipment such as current tractor, the mode of opening of aircraft bonnet is manual unblock for manual mostly, and the manual aircraft bonnet that pulls open after the unblock realizes opening of aircraft bonnet. When the hood is closed, the hood is pushed to close manually. In the process of pulling the hood open, the auxiliary power is mostly used by means of structures such as a gas spring and the like, so that the aim of saving labor is fulfilled. However, the hood needs to be manually operated no matter opened or closed, so that time and labor are wasted, and the opening and closing efficiency is low.
Disclosure of Invention
The invention aims to provide a hood opening and closing control method, a control device, an automatic opening and closing mechanism and mechanical equipment, which can realize automatic opening and closing of a hood, do not need manual pushing and pulling of the hood, save time and labor and have high hood opening and closing efficiency.
Embodiments of the invention may be implemented as follows:
in a first aspect, the present invention provides a hood opening and closing control method applied to mechanical equipment, where the mechanical equipment includes a hood and a lock body, and the lock body is used to lock the hood, and includes:
receiving an opening and closing signal;
controlling the lock body to be unlocked according to the opening and closing signal, and controlling the hood to move along a first direction after the lock body is unlocked so as to open the hood;
or the hood is controlled to move along a second direction according to the opening and closing signal so as to close the hood; the second direction is opposite to the first direction.
In an alternative embodiment, the open/close signal includes a valid unlock signal, and the step of receiving the valid unlock signal includes:
receiving an unlocking signal;
and judging whether the vehicle speed is zero, and if the vehicle speed is zero, judging that the received unlocking signal is an effective unlocking signal.
In an optional embodiment, the mechanical device further includes an electric actuator, the electric actuator is provided with a push rod, the hood is provided with an unlocking connecting rod, and the step of controlling the lock body to be unlocked according to the opening and closing signal includes:
and controlling the ejector rod to extend out according to the effective unlocking signal, so that the ejector rod drives the unlocking connecting rod to rotate, and the shifting piece of the lock body is driven to move, so that the lock body is unlocked.
In an alternative embodiment, the mechanical device further comprises an electric push rod connected with the hood; the step of controlling the hood to move in a first direction after the lock body is unlocked to open the hood includes:
generating a first signal in a state that the lock body is unlocked;
and controlling the electric push rod to extend out according to the first signal so as to drive the hood to open.
In an alternative embodiment, the method further comprises:
acquiring the extension length of the electric push rod;
and if the extending length is equal to the preset length, controlling the electric push rod to stop extending.
In an alternative embodiment, the method further comprises:
acquiring a current value of the electric push rod in a state that the electric push rod extends out;
and if the current value exceeds a preset value, controlling the electric push rod to stop stretching out.
In an alternative embodiment, the mechanical device further comprises an electric push rod connected with the hood; the opening and closing signal comprises a blocking signal, and the step of controlling the hood to move along the second direction according to the opening and closing signal so as to close the hood comprises the following steps of:
controlling the electric push rod to contract according to the locking signal so as to drive the hood to close;
generating a second signal in a state where the hood is closed;
and controlling the electric push rod to stop contracting according to the second signal.
In an alternative embodiment, the method further comprises:
acquiring a current value of the electric push rod in a state that the electric push rod is contracted;
and if the current value exceeds a preset value, controlling the electric push rod to stop contracting.
In a second aspect, the present invention provides a control apparatus comprising:
the first receiving module is used for receiving the opening and closing signals;
the first control module is connected with the first receiving module and used for controlling the lock body to be unlocked according to the opening and closing signal and controlling the hood to move along a first direction after the lock body is unlocked so as to open the hood; or the hood is controlled to move along a second direction according to the opening and closing signal so as to close the hood; the second direction is opposite to the first direction.
In a third aspect, the invention provides an automatic opening and closing mechanism, which is applied to mechanical equipment, wherein the mechanical equipment comprises a hood and a lock body, the lock body is used for locking the hood, the automatic opening and closing mechanism comprises a controller, an electric actuator and an electric push rod, and the controller is respectively connected with the electric actuator and the electric push rod; the controller is used for receiving opening and closing signals, and the opening and closing signals comprise unlocking signals and locking signals;
the electric actuator is used for being connected with the lock body under the condition that the controller receives an unlocking signal so as to enable the lock body to reach an unlocking state; the electric push rod is used for being connected with the hood and driving the hood to move to open the hood in the unlocking state of the lock body; the electric push rod is also used for driving the hood to move to close the hood under the condition that the controller receives the locking signal.
In an optional embodiment, the lock further comprises a micro-motion unit, the micro-motion unit is connected with the controller, and the micro-motion unit is configured to send a first signal to the controller in a state where the lock body is unlocked and send a second signal to the controller in a state where the lock body is locked.
In an optional embodiment, a contact switch is arranged on the micro-motion unit, and in the state that the lock body is unlocked, the contact switch is separated from a shifting piece of the lock body, and the micro-motion unit sends the first signal; and in the state that the lock body is locked, the contact switch is abutted against the shifting piece of the lock body, and the micro-motion unit sends out the second signal.
In an alternative embodiment, the electric push rod includes a first driving member, a first transmission member, and a telescopic rod, the first driving member is connected to the first transmission member, the first transmission member is connected to the telescopic rod, and the telescopic rod is connected to the hood.
In an optional implementation manner, a displacement sensor is arranged on the electric push rod, and the displacement sensor is connected with the controller and is used for detecting the extension length of the electric push rod.
In an optional embodiment, a current sensor is arranged on the electric push rod, and the current sensor is connected with the controller and is used for detecting the current value of the electric push rod.
In an optional implementation manner, the electric actuator includes a second driving element and a push rod, the second driving element is connected to the push rod, and the second driving element drives the push rod to move when the controller receives the unlocking signal, so that the push rod drives the lock body to unlock.
In an optional implementation manner, the lock further comprises an unlocking connecting rod, the unlocking connecting rod is arranged on the hood and connected with the lock body, and the ejector rod drives the unlocking connecting rod to rotate so as to unlock the lock body in a state that the ejector rod extends out.
In a fourth aspect, the present invention provides a mechanical device, comprising a hood and the automatic opening and closing mechanism according to any one of the preceding embodiments, wherein the hood is provided with an electric actuator selectively connected with the lock body, and the electric push rod is connected with the hood.
In an optional embodiment, the robot further comprises a machine body and a portal frame, the hood is rotatably arranged on the machine body, the portal frame is installed on the machine body, one end of the electric push rod is connected with the hood, and the other end of the electric push rod is connected with the portal frame.
The beneficial effects of the embodiment of the invention include, for example:
according to the hood opening and closing control method provided by the embodiment of the invention, when the hood needs to be opened, the lock body can be unlocked according to the opening and closing signal, and the hood is automatically controlled to move along the first direction after unlocking, so that the automatic opening of the hood is completed. When the hood needs to be closed, the hood can be controlled to move along the second direction according to the opening and closing signal, and then the closing of the hood can be completed. In the opening and closing process, the hood does not need to be operated manually, the automation and intelligence degree is high, the time and the labor are saved, and the efficiency of opening and closing the hood is high.
According to the control device provided by the embodiment of the invention, the first receiving module is used for receiving an opening and closing signal, and the first control module is connected with the first receiving module and used for controlling the lock body to be unlocked according to the opening and closing signal and controlling the hood to move along the first direction after the lock body is unlocked so as to open the hood; or, the automatic control device is used for controlling the hood to move along the second direction according to the opening and closing signal so as to close the hood, manual operation is not needed, the automation degree is high, the opening and closing efficiency of the hood is improved, and the automatic control device has important significance for the research and development of unmanned mechanical equipment.
According to the automatic opening and closing mechanism provided by the embodiment of the invention, the controller, the electric actuator and the electric push rod are arranged, the controller is used for receiving opening and closing signals, the electric actuator is used for unlocking the lock body, the electric push rod is used for driving the hood to move, the opening and closing of the hood can be automatically realized, unmanned operation is realized, and the opening and closing efficiency of the hood is improved.
The mechanical equipment provided by the embodiment of the invention comprises the automatic opening and closing mechanism, can automatically realize the opening and closing of the hood, realizes unmanned operation, improves the opening and closing efficiency of the hood, and lays a foundation for designing unmanned mechanical equipment.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a block diagram illustrating steps of a hood opening and closing control method according to an embodiment of the present invention;
fig. 2 is a block diagram illustrating a step of opening a hood in the hood opening and closing control method according to the embodiment of the present invention;
fig. 3 is a block diagram illustrating a step of closing the hood in the hood opening and closing control method according to the embodiment of the present invention;
fig. 4 is a schematic view of an application scenario of the automatic opening and closing mechanism according to the embodiment of the present invention;
fig. 5 is a schematic view of a connection structure between an electric actuator and a lock body in the automatic opening and closing mechanism according to the embodiment of the present invention;
fig. 6 is a schematic diagram illustrating a state of a contact switch and a lock body in the automatic opening and closing mechanism according to the embodiment of the present invention;
fig. 7 is a schematic view illustrating another state of the contact switch and the lock body in the automatic opening and closing mechanism according to the embodiment of the present invention.
Icon: 101-a hood; 110-a lock body; 111-a deflector rod; 113-a plectrum; 120-locking; 130-body; 131-a hinge; 140-a mounting frame; 150-a portal frame; 210-an electric push rod; 220-a micro-motion unit; 221-contact switch; 230-an electric actuator; 231-a mandril; 240-unlocking link; 241-a wire pulling part; 243-an abutment; 245-rotating shaft.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. indicate an orientation or a positional relationship based on that shown in the drawings or that the product of the present invention is used as it is, this is only for convenience of description and simplification of the description, and it does not indicate or imply that the device or the element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
First embodiment
Referring to fig. 1, the present embodiment provides a method for controlling opening and closing of a hood 101, which is applied to mechanical equipment including, but not limited to, farm machinery such as tractors, various vehicles, and the like, the mechanical equipment includes the hood 101 and a lock body 110, the lock body 110 is used for locking the hood 101, and the method for controlling opening and closing of the hood 101 includes:
s10: and receiving an opening and closing signal.
S20: controlling the lock body 110 to be unlocked according to the opening and closing signal, and controlling the hood 101 to move along the first direction after the lock body 110 is unlocked so as to open the hood 101; or, the hood 101 is controlled to move in the second direction according to the opening and closing signal to close the hood 101; wherein the second direction is opposite to the first direction. The opening and closing of the hood 101 are automatically realized according to the opening and closing signals, the execution efficiency is high, manual operation is replaced, and the automation degree is high.
The opening and closing signals comprise unlocking signals and locking signals, and the opening and closing signals can be sent out through a control panel or a remote controller. After receiving the unlocking signal, judging whether the unlocking signal is valid, and only if the unlocking signal is judged to be valid, opening the hood 101; if the unlock signal is invalid, the hood 101 remains closed. Optionally, the step of receiving a valid unlocking signal includes steps S11 and S12. Please refer to fig. 2.
S11: an unlock signal is received.
S12: and judging whether the vehicle speed is zero, and if the vehicle speed is zero, judging that the received unlocking signal is an effective unlocking signal. In other words, the unlocking signal received under the condition that the vehicle speed is not zero is an invalid unlocking signal, and the hood 101 cannot be automatically opened, so that the hood 101 can be prevented from being opened by a vehicle or other mechanical equipment in the running process, misoperation is prevented, and the safety of opening the hood 101 is improved.
S21: and controlling the lock body 110 to unlock according to the effective unlocking signal. Optionally, the mechanical device further includes an electric actuator 230, the electric actuator 230 is provided with a push rod 231, the hood 101 is provided with an unlocking connecting rod 240, and the push rod 231 is controlled to extend according to an effective unlocking signal, so that the push rod 231 drives the unlocking connecting rod 240 to rotate to drive the pick 113 of the lock body 110 to move, thereby unlocking the lock body 110.
The mechanical equipment further comprises an electric push rod 210, the electric push rod 210 is connected with the hood 101, and the electric push rod 210 is used as power for opening and closing the hood 101 and is used for driving the hood 101 to move so as to realize opening and closing of the hood 101; the step of controlling the movement of the housing 101 in the first direction after the lock body 110 is unlocked to open the housing 101 includes:
s22: in a state where the lock body 110 is unlocked, the first signal is generated.
S23: the electric push rod 210 is controlled to extend according to the first signal so as to drive the hood 101 to open. Optionally, a contact switch 221 is further disposed on the hood 101, and in a state where the lock body 110 is unlocked, the contact switch 221 is separated from the finger tab 113 of the lock body 110 to generate the first signal. It is understood that the contact switch 221 abuts against the finger 113 of the lock body 110 in the state where the lock body 110 is locked.
Optionally, the opening and closing control method of the hood 101 further includes:
s31: acquiring the extension length of the electric push rod 210 in the state that the electric push rod 210 extends; if the extension length is equal to the preset length, the electric push rod 210 is controlled to stop extending. It should be noted that, after the extension length of the electric push rod 210 reaches the preset length, it indicates that the opening of the hood 101 has reached the maximum opening, and the opening of the hood 101 is completed, at this time, the electric push rod 210 may be controlled to stop extending. In an alternative embodiment, a displacement sensor may be disposed on the electric push rod 210, and the displacement sensor may detect the extension length of the electric push rod 210, or a proximity switch may be disposed at a position where the hood 101 reaches the maximum opening degree, so as to determine whether the opening of the hood 101 is completed, and control the electric push rod 210 to stop extending after confirming that the opening of the hood 101 is completed.
S32: acquiring a current value of the electric push rod 210 in a state that the electric push rod 210 extends out; if the current value exceeds the preset value, the electric push rod 210 is controlled to stop extending. It can be understood that, during the process of extending the electric putter 210, if an obstacle is encountered, the current value of the electric putter 210 may be abnormally increased. Whether the electric putter 210 is blocked in the extending process can be detected by monitoring the current value of the electric putter 210, if the current value is increased to exceed a preset value or maintained to exceed the preset value for a period of time, it indicates that the extending process is blocked, and the electric putter 210 needs to be controlled to stop extending, so that the electric putter 210 is prevented from being damaged.
Referring to fig. 3, optionally, when the hood 101 needs to be closed, the method for controlling the opening and closing of the hood 101 includes:
s13: a blocking signal is received.
S24: the hood 101 is controlled to move in the second direction according to the latching signal to close the hood 101. Wherein, the step S24 includes a step S25.
S25: the electric push rod 210 is controlled to contract according to the locking signal so as to drive the hood 101 to close. In a state where the hood 101 is closed, the second signal is generated. It can be understood that after the hood 101 is closed, the lock body 110 on the hood 101 is in a locked state, that is, the paddle 113 of the lock body 110 abuts against the contact switch 221, and a second signal is generated in a state where the paddle 113 contacts with the contact switch 221, and the second signal indicates that the lock body 110 is locked, and the hood 101 is closed, and at this time, the electric push rod 210 may be controlled to stop retracting according to the second signal.
S33: acquiring a current value of the electric push rod 210 in a state that the electric push rod 210 is contracted; if the current value exceeds the preset value, the electric push rod 210 is controlled to stop contracting. It should be understood that, during the process of retracting the electric putter 210, whether an obstacle is encountered can be determined by detecting the current value, and if the current value exceeds the preset value or remains over the preset value for a period of time, it indicates that the retracting process is hindered, and it is necessary to control the electric putter 210 to stop retracting, so as to prevent the electric putter 210 from being damaged.
The opening and closing control method for the hood 101 provided by the embodiment of the invention has the advantages of simple and feasible control principle and high reliability, can replace manual operation, realizes automatic opening and closing of the hood 101, has higher opening and closing efficiency, and can also realize automatic opening and closing of the hood 101 through remote control.
The embodiment of the invention also provides a control device, which comprises a first receiving module for receiving the opening and closing signal and a first control module connected with the first receiving module, wherein the first control module is used for controlling the lock body 110 to be unlocked according to the opening and closing signal and controlling the hood 101 to move along the first direction after the lock body 110 is unlocked so as to open the hood 101; or, the control unit is used for controlling the hood 101 to move along the second direction according to the opening and closing signal so as to close the hood 101; wherein the second direction is opposite to the first direction. The control device is used for realizing automatic opening and closing of the hood 101, manual opening and closing operation is replaced, the automation degree is high, and the opening and closing efficiency is higher.
Second embodiment
Referring to fig. 4 and 5, an embodiment of the present invention provides an automatic opening and closing mechanism and a mechanical device including the automatic opening and closing mechanism, where the automatic opening and closing mechanism can be applied to a mechanical device, and the mechanical device includes, but is not limited to, a tractor, various vehicles, an aircraft, or a ship, and can be adapted to automatically open and close a hood 101, a cabin door, a door, and the like. In the present embodiment, a tractor in which an automatic opening and closing mechanism is used in a machine will be described as an example.
The tractor comprises a machine body 130, a portal frame 150, a mounting frame 140, a hood 101, a lock body 110 and an automatic opening and closing mechanism, wherein the hood 101 is rotatably connected to the machine body 130 through a hinge 131, the mounting frame 140 is fixed on the machine body 130, and the portal frame 150 is fixed on the machine body 130 and is positioned between the hinge 131 and the mounting frame 140. The lock catch 120 adapted to the lock body 110 is disposed on the mounting frame 140, the lock body 110 is disposed on the hood 101, and the lock body 110 is used for locking the hood 101, that is, the hood 101 is closed, in a state where the lock body 110 is connected to the lock catch 120. The hood 101 needs to be opened by separating the lock catch 120 from the lock body 110, and then the hood 101 rotates in the direction away from the mounting frame 140 to finish opening; closing the hood 101 requires rotating the hood 101 in a direction approaching the mounting frame 140 until the lock body 110 and the shackle 120 are coupled, completing the closing.
Optionally, the automatic opening and closing mechanism comprises a controller, an electric actuator 230, an electric push rod 210 and a micro-motion unit 220, wherein the controller is connected with the electric actuator 230 and the electric push rod 210 respectively; the controller is used for receiving opening and closing signals, and the opening and closing signals comprise unlocking signals and locking signals. The electric actuator 230 is used for connecting with the lock body 110 in a state that the controller receives an unlocking signal, so that the lock body 110 reaches an unlocking state; the electric push rod 210 is used for being connected with the hood 101, and the electric push rod 210 is used for driving the hood 101 to move to open the hood 101 in the unlocking state of the lock body 110; the electric push rod 210 is also used for driving the hood 101 to move to close the hood 101 under the condition that the controller receives the locking signal.
Referring to fig. 6 and 7, the inching unit 220 is disposed on the hood 101, the inching unit 220 is connected to the controller, and the inching unit 220 is configured to send a first signal to the controller when the lock body 110 is unlocked and send a second signal to the controller when the lock body 110 is locked. Optionally, the inching unit 220 is provided with a contact switch 221, as shown in fig. 6, in the state that the lock body 110 is unlocked, the contact switch 221 is separated from the pull tab 113 of the lock body 110, and the inching unit 220 sends a first signal; as shown in fig. 7, in the state where the lock body 110 is locked, the contact switch 221 abuts against the paddle 113 of the lock body 110, and the inching unit 220 transmits the second signal.
It is understood that the controller may be a vehicle controller on the mechanical device, and the vehicle controller may directly communicate with the electric push rod 210, the displacement sensor, the current sensor, the micro-motion unit 220 and the electric actuator 230 to receive and send signals. In alternative embodiments, a separate sub-controller may be disposed on the power pushrod 210, and the sub-controller is communicatively connected to the vehicle control unit. The sub-controller is connected with the displacement sensor and the current sensor respectively, and signals acquired by the displacement sensor and the current sensor are transmitted to the vehicle control unit through the sub-controller, which is not limited specifically here.
The controller may adopt a general-purpose Processor, including but not limited to a Central Processing Unit (CPU), a Network Processor (NP), and the like; the device may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field-Programmable Gate Array (FPGA) or other Programmable logic device, a discrete Gate or transistor logic device, a discrete hardware component, and the like. Of course, the controller may also be integrated into a PLC controller, a single chip, or the like, and is not limited herein.
In this embodiment, one end of the electric push rod 210 is connected to the hood 101, and the other end is connected to the gantry 150. The electric push rod 210 includes a first driving member, a first transmission member, and an expansion link, the first driving member is connected to the first transmission member, the first transmission member is connected to the expansion link, and the expansion link is connected to the hood 101. Alternatively, the first driving member may employ a motor, the first transmission member may employ, but is not limited to, a transmission mechanism such as a ball screw, a cam mechanism, a crank-link mechanism, or a rack and pinion mechanism, and the first driving member drives the telescopic rod to extend or retract through the first transmission member so as to drive the hood 101 to move along the first direction or the second direction. In other alternative embodiments, the electric push rod 210 may be replaced by a gas spring, a hydraulic cylinder, or a linear cylinder, as long as the hood 101 can be moved.
Optionally, a displacement sensor is disposed on the electric push rod 210, and the displacement sensor is connected to the controller and is configured to detect the extension length of the electric push rod 210. If the extension length of the electric push rod 210 reaches the preset length, it can be determined that the hood 101 is opened to the predetermined opening degree, and the opening of the hood 101 is completed. In other alternative embodiments, the determination of whether the hood 101 is opened to the predetermined opening degree is not limited to the detection of the extension length of the electric push rod 210 by a displacement sensor, but other methods such as installing a proximity switch on the hood 101 or the body 130, obtaining the moving distance of the electric push rod 210 by providing a laser sensor, or detecting the opening degree of the hood 101 by providing an inclination sensor may also be used, and the method is not particularly limited herein.
The electric putter 210 is provided with a current sensor, and the current sensor is connected with the controller and used for detecting the current value of the electric putter 210. If the current value exceeds the preset value, it indicates that the electric putter 210 is obstructed in the process of extending or retracting, and at this time, the electric putter 210 needs to be controlled to stop extending or retracting, so as to prevent the electric putter 210 from being damaged or from other faults. It can be understood that the electric push rod 210 communicates with the vehicle control unit through a can line, and remote control and centralized control can be realized. The electric push rod 210 can reciprocate within a certain range of stroke, and the stroke of the electric push rod 210 can be selected to be 500mm, 600mm, 800mm or 1000mm, etc.
The electric actuator 230 includes a second driving member and a push rod 231, the second driving member is connected to the push rod 231, and when the controller receives the unlocking signal, the second driving member drives the push rod 231 to move, so that the push rod 231 drives the lock body 110 to unlock. The second drive member may be an electric motor or a motor or the like. The push rod 231 applies power to the lock body 110 under the action of the second driving member, so that the lock body 110 is separated from the lock catch 120, and the purpose of unlocking is achieved. Optionally, the top bar 231 is extended to unlock the lock body 110 when the controller receives a valid unlocking signal, and the top bar 231 is automatically retracted after a certain time, such as one second or two seconds, for the next time to extend for unlocking. It is understood that the automatic retraction of the push rod 231 can be achieved by the second driving member, and can also be achieved by other elastic members, which are not limited in particular.
It should be noted that the lock body 110 and the lock catch 120 in the present embodiment have the existing structure, and the principle that the lock body 110 and the lock catch 120 are used for locking the hood 101 belongs to the well-known technology. Not described in detail, in the present embodiment, in order to adapt to the automation control, the structure of the unlocking link 240 is modified and the inching unit 220 is added. The conventional unlocking connecting rod 240 is provided with a wire drawing portion 241, the wire drawing portion 241 drives the shift lever 111 of the lock body 110 to move, and the shift lever 111 drives the shift piece 113 to move, so that the lock catch 120 is separated from the lock body 110 to achieve unlocking. In this embodiment, an abutting portion 243 is provided at one end of the unlocking link 240 remote from the wire portion 241, the unlocking link 240 is fixed to the hood 101 via a rotating shaft 245, and the abutting portion 243 and the wire portion 241 are rotatable relative to the rotating shaft 245. When the controller receives an effective unlocking signal, the push rod 231 of the electric actuator 230 extends out to act on the abutting portion 243 of the unlocking connecting rod 240, so as to push the abutting portion 243 to rotate around the rotating shaft 245, thereby driving the shift lever 111 of the lock body 110 to move, and the shift lever 111 drives the shift piece 113 to move, so that the lock catch 120 is separated from the lock body 110, and the purpose of unlocking is achieved.
The automatic opening and closing mechanism provided by the embodiment of the invention has the following working principle:
process for automatically opening the hood 101:
the method comprises the steps that an unlocking signal is sent out on a remote controller or a control panel, after the controller receives the unlocking signal, whether the speed of the tractor is zero or not is judged, and if the speed of the tractor is zero, an effective unlocking signal is received by the controller; the controller controls the ejector 231 of the electric actuator 230 to extend according to the effective unlocking signal, and drives the abutting portion 243 of the unlocking connecting rod 240 to rotate, so as to drive the shift lever 111 and the shift piece 113 in the lock body 110 to move, and unlock the lock body 110 and the lock catch 120. In an unlocking state, the contact switch 221 on the micro-motion unit 220 is separated from the plectrum 113, and the micro-motion unit 220 sends a first signal to the controller; the controller controls the electric push rod 210 to extend according to the received first signal, the electric push rod 210 drives the hood 101 to rotate along the first direction (anticlockwise direction in the drawing), when the displacement sensor detects that the length of the electric push rod 210 extending is equal to the preset length, which indicates that the hood 101 is opened to the preset opening degree, the electric push rod 210 stops extending, and the hood 101 is opened completely.
Process of automatically closing the hood 101:
the locking signal is sent out on the remote controller or the control panel, after the controller receives the locking signal, the electric push rod 210 is controlled to contract, and the electric push rod 210 drives the hood 101 to rotate along the second direction (clockwise direction in the figure) until the lock body 110 on the hood 101 is connected with the lock catch 120 on the mounting frame 140, so that the closing of the hood 101 is completed. In the closing process of the hood 101, the lock body 110 and the lock catch 120 sequentially pass through an unlocking state, a half-locking state and a full-locking state, in the full-locking state, the poking piece 113 abuts against the contact switch 221, and the micro-motion unit 220 sends a second signal to the controller; the controller controls the electric push rod 210 to stop extending and retracting according to the received second signal, and the hood 101 is closed.
The embodiment of the invention also provides mechanical equipment, which comprises a hood 101 and the automatic opening and closing mechanism in any one of the previous embodiments, wherein the hood 101 is provided with an electric actuator 230 selectively connected with the lock body 110, and the electric push rod 210 is connected with the hood 101. The mechanical equipment can realize automatic opening and closing of the hood 101, replaces manual opening and closing operations, and is high in opening and closing efficiency, fast and convenient.
The contents of other parts not mentioned in this embodiment are similar to those described in the first embodiment, and are not described again here.
In summary, the hood 101 opening and closing control method, the control device, the automatic opening and closing mechanism and the mechanical device provided by the embodiment of the invention have the following beneficial effects:
according to the hood 101 opening and closing control method and the hood 101 opening and closing control device, when the hood 101 needs to be opened, the lock body 110 can be unlocked according to the opening and closing signal, the hood 101 is automatically controlled to move along the first direction after unlocking, and automatic opening of the hood 101 is completed. When the hood 101 needs to be closed, the hood 101 can be controlled to move along the second direction according to the opening and closing signal, and then the closing of the hood 101 can be completed. Open and close the in-process, need not the manual work and open and shut the operation to aircraft bonnet 101, automatic and intelligent degree is high, and labour saving and time saving improves the operation convenience to open and close the efficiency of aircraft bonnet 101 is higher. For high-power mechanical equipment, the hood 101 or the cabin door is opened and closed more difficultly, the problem that the hood 101 of equipment such as a large tractor is inconvenient to open and close can be solved through the hood 101 opening and closing control method in the embodiment, and the method has important significance for the research and development of unmanned mechanical equipment.
According to the automatic opening and closing mechanism and the mechanical equipment provided by the embodiment of the invention, the controller, the electric actuator 230 and the electric push rod 210 are arranged, the controller is used for receiving opening and closing signals, the electric actuator 230 is used for unlocking the lock body 110, the electric push rod 210 is used for driving the hood 101 to move, the opening and closing of the hood 101 can be automatically realized, unmanned operation is realized, the opening and closing efficiency of the hood 101 is improved, and the operation convenience is improved.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (19)
1. A hood opening and closing control method is applied to mechanical equipment, the mechanical equipment comprises a hood and a lock body, the lock body is used for locking the hood, and the hood opening and closing control method is characterized by comprising the following steps:
receiving an opening and closing signal;
controlling the lock body to be unlocked according to the opening and closing signal, and controlling the hood to move along a first direction after the lock body is unlocked so as to open the hood;
or the hood is controlled to move along a second direction according to the opening and closing signal so as to close the hood; the second direction is opposite to the first direction.
2. The hood opening and closing control method of claim 1, wherein the opening and closing signal comprises a valid unlock signal, and the step of receiving the valid unlock signal comprises:
receiving an unlocking signal;
and judging whether the vehicle speed is zero, and if the vehicle speed is zero, judging that the received unlocking signal is an effective unlocking signal.
3. The hood opening and closing control method according to claim 2, wherein the mechanical device further comprises an electric actuator, a push rod is arranged on the electric actuator, an unlocking connecting rod is arranged on the hood, and the step of controlling the lock body to be unlocked according to the opening and closing signal comprises the steps of:
and controlling the ejector rod to extend out according to the effective unlocking signal, so that the ejector rod drives the unlocking connecting rod to rotate, and the shifting piece of the lock body is driven to move, so that the lock body is unlocked.
4. The hood opening and closing control method according to claim 3, wherein the mechanical device further includes an electric push rod connected to the hood; the step of controlling the hood to move in a first direction after the lock body is unlocked to open the hood includes:
generating a first signal in a state that the lock body is unlocked;
and controlling the electric push rod to extend out according to the first signal so as to drive the hood to open.
5. The hood opening and closing control method according to claim 4, further comprising:
acquiring the extension length of the electric push rod in the state that the electric push rod extends out;
and if the extending length is equal to the preset length, controlling the electric push rod to stop extending.
6. The hood opening and closing control method according to claim 4, further comprising:
acquiring a current value of the electric push rod in a state that the electric push rod extends out;
and if the current value exceeds a preset value, controlling the electric push rod to stop stretching out.
7. The hood opening and closing control method according to claim 1, wherein the mechanical device further includes an electric push rod connected to the hood; the opening and closing signal comprises a blocking signal, and the step of controlling the hood to move along the second direction according to the opening and closing signal so as to close the hood comprises the following steps of:
controlling the electric push rod to contract according to the locking signal so as to drive the hood to close;
generating a second signal in a state where the hood is closed;
and controlling the electric push rod to stop contracting according to the second signal.
8. The hood opening and closing control method according to claim 7, further comprising:
acquiring a current value of the electric push rod in a state that the electric push rod is contracted;
and if the current value exceeds a preset value, controlling the electric push rod to stop contracting.
9. A control device, comprising:
the first receiving module is used for receiving the opening and closing signals;
the first control module is connected with the first receiving module and used for controlling the lock body to be unlocked according to the opening and closing signal and controlling the hood to move along a first direction after the lock body is unlocked so as to open the hood; or the hood is controlled to move along a second direction according to the opening and closing signal so as to close the hood; the second direction is opposite to the first direction.
10. An automatic opening and closing mechanism is applied to mechanical equipment, the mechanical equipment comprises a hood and a lock body, and the lock body is used for locking the hood; the controller is used for receiving opening and closing signals, and the opening and closing signals comprise unlocking signals and locking signals;
the electric actuator is used for being connected with the lock body under the condition that the controller receives an unlocking signal so as to enable the lock body to reach an unlocking state; the electric push rod is used for being connected with the hood and driving the hood to move to open the hood in the unlocking state of the lock body; the electric push rod is also used for driving the hood to move to close the hood under the condition that the controller receives the locking signal.
11. The automatic opening and closing mechanism according to claim 10, further comprising a micro-motion unit connected to the controller, the micro-motion unit being configured to send a first signal to the controller when the lock body is unlocked and to send a second signal to the controller when the lock body is locked.
12. The automatic opening and closing mechanism according to claim 11, wherein a contact switch is provided on the inching unit, and in a state that the lock body is unlocked, the contact switch is separated from a pulling piece of the lock body, and the inching unit sends the first signal; and in the state that the lock body is locked, the contact switch is abutted against the shifting piece of the lock body, and the micro-motion unit sends out the second signal.
13. The automatic opening and closing mechanism according to claim 10, wherein the electric push rod comprises a first driving member, a first transmission member and a telescopic rod, the first driving member is connected with the first transmission member, the first transmission member is connected with the telescopic rod, and the telescopic rod is connected with the hood.
14. The automatic opening and closing mechanism according to claim 10, wherein a displacement sensor is provided on the electric push rod, and the displacement sensor is connected to the controller for detecting the extension length of the electric push rod.
15. The automatic opening and closing mechanism according to claim 10, wherein a current sensor is provided on the electric push rod, and the current sensor is connected to the controller for detecting a current value of the electric push rod.
16. The automatic opening and closing mechanism according to claim 10, wherein the electric actuator comprises a second driving member and a push rod, the second driving member is connected to the push rod, and the second driving member drives the push rod to move under the condition that the controller receives the unlocking signal, so that the push rod drives the lock body to unlock.
17. The automatic opening and closing mechanism according to claim 16, further comprising an unlocking link rod, wherein the unlocking link rod is disposed on the housing and connected to the lock body, and in a state where the push rod is extended, the push rod drives the unlocking link rod to rotate so as to unlock the lock body.
18. A mechanical device comprising a housing and an automatic opening and closing mechanism according to any one of claims 10 to 17, wherein the housing is provided with an electric actuator selectively coupled to the lock body, and the electric push rod is coupled to the housing.
19. The mechanical equipment of claim 18, further comprising a body and a gantry, wherein the hood is rotatably disposed on the body, the gantry is mounted on the body, and one end of the electric push rod is connected to the hood and the other end of the electric push rod is connected to the gantry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210106907.0A CN114412303A (en) | 2022-01-28 | 2022-01-28 | Hood opening and closing control method, control device, automatic opening and closing mechanism and mechanical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210106907.0A CN114412303A (en) | 2022-01-28 | 2022-01-28 | Hood opening and closing control method, control device, automatic opening and closing mechanism and mechanical equipment |
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| CN114412303A true CN114412303A (en) | 2022-04-29 |
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| CN202210106907.0A Pending CN114412303A (en) | 2022-01-28 | 2022-01-28 | Hood opening and closing control method, control device, automatic opening and closing mechanism and mechanical equipment |
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