CN218619970U - Handle movement direction recognition system and operation machine - Google Patents
Handle movement direction recognition system and operation machine Download PDFInfo
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- CN218619970U CN218619970U CN202223208221.7U CN202223208221U CN218619970U CN 218619970 U CN218619970 U CN 218619970U CN 202223208221 U CN202223208221 U CN 202223208221U CN 218619970 U CN218619970 U CN 218619970U
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Abstract
The utility model relates to the technical field of operation machinery operation, and provides a handle motion direction identification system and operation machinery, including guide's handle and direction identification device, be provided with a plurality of stations around the guide's handle, the direction identification device sets up on the guide's handle for when the guide's handle moves to the direction that any station is located from the preset intermediate position, can be according to the motion direction and the motion range of guide's handle, generate the handle action direction analog quantity signal of corresponding direction; the signal output end of the direction recognition device is electrically connected with a vehicle main control system. The utility model discloses a direction recognition device can make the motion direction of vehicle main control system direct recognition handle to judge whether the execution action of operation machinery moves to dangerous direction, so that carry out the action restriction, save the setting of protection solenoid valve, simplified action protection device's complexity.
Description
Technical Field
The utility model relates to an operation machine manipulation technical field especially relates to a handle direction of motion identification system and operation machine.
Background
The pilot handle adopted by the hydraulic system of the crane is essentially a reversing valve, and can realize the actions of different mechanisms of the crane through the front-back and left-back actions of the handle, but the handle is a hydraulic control handle and cannot provide identification signals for the action direction of the host control system, so that electromagnetic valves related to the actions of all the mechanisms are required to be added to realize the control of the actions.
Since the crane can produce dangerous working conditions in irregular operation, various types of cranes are usually provided with action protection devices (torque limiters and various hydraulic protection systems) to ensure the safe operation of the crane. The moment limiter consists of a load detector, an arm length detector, an angle detector, a working condition selector and a microcomputer. When the crane enters a working state, the actual detection signals of all the parameters are input into the computer, after operation, amplification and processing, the corresponding parameter values are displayed, and various protection signals are sent out. After the signal appears, the moment limiter needs to prohibit the crane from continuing moving towards the dangerous direction and allow the crane to move towards the direction for removing the danger. Therefore, during various protections of the moment limiter, the motion direction signal of the crane must be correctly acquired to determine whether the motion direction of the crane is to be limited.
The protection mode is realized by adding a plurality of protection electromagnetic valves controlled by a vehicle-mounted controller on a control oil path of a pilot handle, the protection electromagnetic valves respectively control the action of each direction, and after the vehicle-mounted controller judges that dangerous working conditions are about to occur, the protection electromagnetic valves are powered off so as to cut off a control oil path of a hydraulic pilot handle in the direction, so that the action protection of the handle in the direction is realized.
SUMMERY OF THE UTILITY MODEL
The utility model provides a handle direction of motion identification system and operation machinery for the defect that the action protection device of operation machinery is complicated among the solution prior art.
The utility model provides a handle direction of motion identification system, include:
the device comprises a pilot handle, a plurality of stations and a control unit, wherein the plurality of stations are arranged on the periphery of the pilot handle;
the direction recognition device is arranged on the pilot handle and used for generating a handle action direction analog quantity signal in a corresponding direction according to the movement direction and the movement amplitude of the pilot handle when the pilot handle moves to the direction of any station from a preset middle position; and the signal output end of the direction recognition device is electrically connected with a vehicle main control system.
According to the utility model provides a handle direction of motion identification system, the guide's handle includes:
fixing the disc;
the handle operating rod is arranged in the middle of the upper end of the fixed disc;
the handle installation seat sets up the below of fixed disk, the fixed disk through rotate coupling assembling with handle installation seat swing joint, direction recognition device establishes rotate coupling assembling is last.
According to the utility model provides a handle direction of motion identification system, rotate coupling assembling and include:
the first U-shaped connecting piece is arranged at the middle position, the first end of the first U-shaped connecting piece is connected with the handle mounting seat, and the second end of the first U-shaped connecting piece is an open end;
the first end of the second U-shaped connecting piece is connected with the middle part of the lower end of the fixed disc, and the second end of the second U-shaped connecting piece is an open end;
the rotating connecting body is arranged between the first U-shaped connecting piece and the second U-shaped connecting piece, the open end of the first U-shaped connecting piece and the open end of the second U-shaped connecting piece are oppositely arranged and are mutually staggered, and the open end of the first U-shaped connecting piece is respectively hinged with a first side surface and a second side surface which are opposite to each other on the rotating connecting body through a first rotating shaft, so that the rotating connecting body and the second U-shaped connecting piece can rotate towards a first station or a second station around the first rotating shaft; the open end of the second U-shaped connecting piece is hinged to a third side face and a fourth side face, opposite to each other, of the rotary connecting body through a second rotating shaft, so that the second U-shaped connecting piece can rotate towards a third station or a fourth station around the second rotating shaft.
According to the utility model provides a handle direction of motion identification system, first station with the line perpendicular to of second station the third station with line between the fourth station.
According to the utility model provides a handle direction of motion identification system, it is the square structure to rotate the connector, first pivot is connected respectively first side with the center of second side, the second pivot is connected respectively the third side with the center of fourth side.
According to the utility model provides a handle direction of motion identification system, direction recognition device includes:
the magnet is arranged right below the rotary connecting body through a connecting piece;
the Hall sensor is arranged right below the magnet and used for detecting the magnetic field intensity of the magnet and inducing voltage corresponding to the magnetic field intensity when the magnet moves along with the rotary connecting body;
the circuit board is arranged at the first end of the first U-shaped connecting piece, the signal detection input end of the circuit board is connected with the output end of the Hall sensor, and the output end of the circuit board is electrically connected with a vehicle main control system.
According to the utility model provides a handle direction of motion identification system, the circuit board is E type structure, including first connecting plate, middle part connecting plate and second connecting plate, the middle part connecting plate sets up first connecting plate with between the second connecting plate, hall sensor connects on the middle part connecting plate, first connecting plate with the second connecting plate with the first end fixed connection of first U type connecting piece, follow respectively in the both sides of first U type connecting piece first connecting plate with the middle part connecting plate and the second connecting plate with wear out between the connecting plate of middle part.
According to the utility model provides a handle direction of motion identification system, the connecting piece sets up to U type structure, be in including the bottom plate and connect two curb plates at bottom plate both ends, the bottom plate sets up the below of rotating the connector, two the curb plate is connected respectively the both sides of second U type connecting piece, magnet sets up the center of bottom plate.
According to the utility model provides a handle direction of motion identification system still includes the plunger subassembly, the plunger subassembly is provided with four, respectively with first station the second station the third station with the fourth station is corresponding, the top of plunger subassembly with the fixed disk contacts, the motion of handle action bars drives the fixed disk promotes to correspond motion side is last the plunger subassembly.
In a second aspect, the present invention further provides a working machine comprising the handle movement direction recognition system described in the first aspect.
The utility model provides a handle motion direction identification system, including guide's handle and the direction recognition device who sets up on guide's handle, guide's handle is provided with a plurality of stations all around, when not operating, guide's handle is located the intermediate position, when guide's handle moves to the direction at arbitrary station place, according to guide's handle direction of motion and motion amplitude, generates the handle action direction analog quantity signal of corresponding direction; the direction recognition device is electrically connected with the vehicle main control system, and sends the handle action direction analog quantity signal to the vehicle main control system, so that the vehicle main control system can recognize the motion direction of the handle according to the signal and make a corresponding action strategy.
Compared with the prior art, the utility model provides a handle direction of motion identification system, when leading the handle to a certain station direction motion, can detect the action of this guide's handle through direction recognition device, the motion direction and the motion range of handle promptly, and with the handle action direction analog signal of this action information generation corresponding direction, send for vehicle main control system, vehicle main control system is according to handle action direction analog signal, judge whether the execution action of the operation machinery that the action of guide's handle expressed at present moves to dangerous direction, so that move the restriction, thereby can save the setting of protection solenoid valve, hydraulic system's complexity has been simplified.
The utility model also provides an operation machine, including foretell handle direction of motion identification system. The utility model provides an operation machinery, direct action information with the guide handle who acquires is as the basis of judging whether need carry out hoist protection action to control has been simplified. The complexity of the hydraulic system is simplified, the cost of the hydraulic system is reduced, and the failure rate is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a rotating connection assembly provided in an embodiment of the present invention;
fig. 2 is a schematic perspective view of a pilot handle provided in an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a direction recognition device according to an embodiment of the present invention.
Reference numerals:
1. a direction recognition device; 11. a magnet; 12. a Hall sensor; 13. a circuit board; 14. a connecting member;
2. a handle lever; 3. fixing the disc; 4. a handle mount; 5. rotating the connecting assembly; 51. a first U-shaped connector; 52. a second U-shaped connector; 53. rotating the connector;
6. and a mandril piston.
Detailed Description
To make the objects, technical solutions and advantages of the present invention clearer, the drawings of the present invention are combined to clearly and completely describe the technical solutions of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
A handle movement direction recognition system and a working machine according to an embodiment of the present invention will be described with reference to fig. 1 to 3.
The handle movement direction recognition system that this embodiment provided includes: a pilot handle and a direction recognition device 1.
The direction recognition device 1 is arranged on the pilot handle and used for generating a handle action direction analog quantity signal in a corresponding direction according to the movement direction and the movement amplitude of the pilot handle when the pilot handle moves from a preset middle position to the direction of any station; the signal output end of the direction recognition device 1 is electrically connected with a vehicle main control system.
According to the above technical scheme, compared with the prior art, the utility model provides a handle direction of motion identification system, when leading the handle to a certain station direction motion, according to the direction of motion and the motion range of guide's handle, direction recognition device 1 can detect the action of this guide's handle, and with the handle action direction analog signal of this action information generation corresponding direction, send for vehicle main control system, make vehicle main control system can directly discern the direction of motion of handle, thereby judge whether the execution action of the operation machinery that present guide's handle represented moves to dangerous direction (protection action direction), with this logic input as the execution action, realize the logic control of execution action, confirm whether to restrict the action direction of hoist, if current action direction needs the restriction, direct through the main valve block switching on of current main oil circuit, thereby can save the setting of protection solenoid valve, the complexity of action protection device has been simplified.
The vehicle main Control system may be an ECU (Electronic Control Unit) running computer, and has a function of calculating, processing, and determining information, and then outputting a command.
In one embodiment, a first station, a second station, a third station and a fourth station are arranged around the pilot handle, the four stations respectively correspond to different execution actions, and a connecting line of the first station and the second station is perpendicular to a connecting line between the third station and the fourth station.
In this embodiment, the pilot handle includes: handle action bars 2, fixed disk 3 and handle mount pad 4, the middle part of 3 upper ends of fixed disk is provided with handle action bars 2, and handle mount pad 4 sets up in the below of fixed disk 3, and fixed disk 3 is through rotating coupling assembling 5 and 4 swing joint of handle mount pad, and direction recognition device 1 is established rotate coupling assembling 5 is last.
Specifically, the rotating connecting assembly 5 includes: a first U-shaped link 51, a second U-shaped link 52 and a rotary link 53.
The first U-shaped connecting piece 51 is arranged in the middle, the first end of the first U-shaped connecting piece 51 is connected with the handle mounting seat 4, and the second end of the first U-shaped connecting piece 51 is an open end; the first end of the second U-shaped connecting piece 52 is connected with the middle part of the lower end of the fixed disc 3, the second U-shaped connecting piece 52 can move together with the fixed disc 3 under the action of the handle operating rod 2, and the second end of the second U-shaped connecting piece 52 is an opening end.
The rotary connecting body 53 is arranged between the first U-shaped connecting piece 51 and the second U-shaped connecting piece 52, the open end of the first U-shaped connecting piece 51 and the open end of the second U-shaped connecting piece 52 are oppositely arranged and staggered, and the open end of the first U-shaped connecting piece 51 is hinged with a first side face and a second side face which are opposite on the rotary connecting body 53 through a first rotating shaft respectively, so that the rotary connecting body 53 and the second U-shaped connecting piece 52 can rotate around the first rotating shaft towards a first station or a second station; the open end of the second U-shaped connecting member 52 is hinged to the third and fourth opposite side surfaces of the rotary connecting member 53 via a second rotary shaft, so that the second U-shaped connecting member 52 can rotate around the second rotary shaft toward the third station or the fourth station.
So set up, through rotating connector 53 and articulated with first U type connecting piece 51 and second U type connecting piece 52 respectively, first U type connecting piece 51 can move to four directions under the promotion of handle action bars 2, has realized the motion of guide's handle to four stations promptly, and simple structure connects reliably.
Alternatively, the rotation connecting body 53 has a cubic structure, preferably a cubic structure, and the surfaces have the same size, wherein the first rotating shaft is connected to the centers of the first side surface and the second side surface, respectively, and the second rotating shaft is connected to the centers of the third side surface and the fourth side surface, respectively. Based on this, the two sides of the opening end of the first U-shaped connector 51 are parallel to each other, and the two sides of the opening end of the second U-shaped connector 52 are also parallel to each other, so that the rotating connector 53 is set to be a cubic structure, so as to ensure that when the rotating connector 53 rotates relative to the first U-shaped connector 51 or the second U-shaped connector 52, the contact surfaces are parallel to each other, and the movement is stable.
In the present embodiment, the direction recognition device 1 includes a magnet 11, a hall sensor 12, and a circuit board 13.
The magnet 11 is arranged right below the rotary connecting body 53 through the connecting piece 14, and the hall sensor 12 is arranged right below the magnet 11 and used for detecting the magnetic field intensity of the magnet 11 and inducing voltage corresponding to the magnetic field intensity when the magnet 11 moves along with the rotary connecting body 53; the circuit board 13 is arranged at a first end of the first U-shaped connecting piece 51, the Hall sensor 12 can be welded and fixed with the circuit board 13, a signal detection input end of the circuit board 13 is connected with an output end of the Hall sensor 12, an output end of the circuit board 13 is electrically connected with a vehicle main control system, and the circuit board 13 is used for generating a handle action direction analog quantity signal according to voltage detected by the Hall sensor 12 and sending the handle action direction analog quantity signal to the vehicle main control system.
According to the arrangement, the magnet 11 and the Hall sensor 12 are used as detection elements, the magnet 11 is fixed right below the rotary connecting body 53, the Hall sensor 12 is close to the magnet 11, and when the pilot handle is in the middle position, the Hall sensor 12 is opposite to the magnet 11; when the rotary connector 53 rotates relatively, the magnet 11 is driven to move together, along with the difference of the movement direction and amplitude, the hall sensor 12 is close to different positions on the surface of the magnet 11, different voltages are sensed by the hall sensor 12, the circuit board 13 generates a handle action direction analog quantity signal in a corresponding direction according to the voltage detected by the hall sensor 12, so that the vehicle main control system can identify the movement direction and the movement amplitude of the pilot handle, thereby judging whether the pilot handle moves towards a dangerous direction (protection action direction), determining whether the action direction of the crane needs to be limited, if the current action direction needs to be limited, directly blocking the conduction of the current main oil way through the main valve, and the arrangement of a protection electromagnetic valve can be omitted, thereby directly issuing an action instruction to an execution mechanism, and simplifying the complexity of an action protection device.
Optionally, when the pilot handle moves to any station direction, the motion direction of the first station is set to be + X, the motion direction of the second station is set to be-X, the motion direction of the third station is set to be + Y, and the motion direction of the fourth station is set to be-Y, and the handle action direction analog quantity signal generated by the circuit board 13 in any station direction is represented by different signals, so that the vehicle main control system can conveniently identify the station to which the received signal belongs.
In one embodiment, the connecting member 14 is a U-shaped structure, and includes a bottom plate and two side plates connected to two ends of the bottom plate, the bottom plate is disposed below the rotary connecting member 53, the two side plates are respectively connected to two sides of the second U-shaped connecting member 52, and the two side plates are parallel to two sides of the second U-shaped connecting member 52, when the guide handle is in the middle position, the connecting member 14, the first U-shaped connecting member 51, and the second U-shaped connecting member 52 are all in a vertical state, and the magnet 11 is disposed in the center of the bottom plate.
In this embodiment, the circuit board 13 is an E-shaped structure, and includes a first connecting plate, a middle connecting plate, and a second connecting plate, the middle connecting plate is disposed between the first connecting plate and the second connecting plate, the hall sensor 12 is connected to the middle connecting plate, the first connecting plate and the second connecting plate are fixedly connected to the first end of the first U-shaped connecting member 51 through bolts, and two sides of the first U-shaped connecting member 51 respectively penetrate through the first connecting plate and the middle connecting plate, and the second connecting plate and the middle connecting plate; the circuit board 13 is thus arranged on the rotating joint assembly 5 without affecting the normal operation of the rotating joint assembly 5.
In some embodiments, the plunger assembly further comprises four plunger assemblies, the four plunger assemblies correspond to the first station, the second station, the third station and the fourth station respectively, each plunger assembly comprises an ejector piston 6 and a valve core, in the related art, the valve core sleeve is provided with a pressure regulating spring and a return spring, the upper end of each valve core is provided with a spring seat for fixing the pressure regulating spring and the return spring, the upper end of each spring seat is provided with the ejector piston 6, the depth of an inner hole of the ejector piston 6 determines the limiting stroke of the valve core, the ejector piston 6 is in contact with the bottom of the fixed disk 3, and the handle operating rod 2 moves to drive the fixed disk 3 to push the plunger assemblies at corresponding positions.
The embodiment of the utility model also discloses an operation machinery, including foretell handle direction of motion identification system.
In one embodiment, the working machine is a crane, and the crane is provided with different actuating mechanisms for lifting, rotating, amplitude-changing operation and the like.
A hydraulic control system of a crane comprises a hydraulic pilot handle, a main valve and a hydraulic pilot valve. The hydraulic pilot handle is connected with the hydraulic pilot valves, and when the hydraulic pilot handle is at each conducting position, the control oil way where one of the hydraulic pilot valves is located is conducted; and each hydraulic pilot valve is respectively connected with a main valve to control the action of the main valve and further control the conduction and the cut-off of the corresponding main oil way, and the conduction of each main oil way can lead the corresponding mechanical part of the crane to carry out corresponding action. For example, when the hydraulic pilot handle moves in one direction, the corresponding action of the crane is hoisting, and at the moment, the hydraulic control principle of the crane is as follows: when the hydraulic pilot handle moves towards the direction, the control oil path in the direction is communicated, and a pressure difference is generated on the valve core of the main valve at the moment, so that the valve core of the main valve is displaced under the action of the pressure, the corresponding main oil path is communicated, and the crane is hoisted and ascended. In the prior art, a crane generally has two hydraulic pilot handles, so that at least eight-direction handles generally act, and therefore at least eight protection electromagnetic valves are needed to perform intermediate action processing on a control oil path so as to keep the safety protection of related actions.
The crane with the handle movement direction identification system generates a corresponding handle action direction analog quantity signal according to the movement direction and the movement amplitude of the pilot handle through the direction identification device 1 arranged on the pilot handle and sends the signal to the vehicle main control system, so the vehicle main control system can directly acquire action information of the pilot handle according to the handle action direction analog quantity signal, judge whether the execution action of the crane represented by the action of the current pilot handle moves to a dangerous direction or not, and directly cut off or conduct a corresponding control oil way through the main valve. Therefore, the vehicle main control system can directly execute relevant logic output according to the action command represented by the movement direction of the pilot handle, and therefore, the vehicle main control system can perform action cut-off according to known protection action protection, and the complexity of a complex mechanical device and a hydraulic system can be avoided.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A handle movement direction recognition system, comprising:
the device comprises a pilot handle, a plurality of stations and a control unit, wherein the plurality of stations are arranged on the periphery of the pilot handle;
the direction recognition device (1) is arranged on the pilot handle and used for generating a corresponding handle action direction analog quantity signal according to the movement direction and the movement amplitude of the pilot handle when the pilot handle moves to the direction of any station from a preset middle position; and the signal output end of the direction recognition device (1) is electrically connected with a vehicle main control system.
2. The handle movement direction identification system of claim 1, wherein the pilot handle comprises:
a fixed disc (3);
the handle operating rod (2) is arranged in the middle of the upper end of the fixed disk (3);
handle mount pad (4), set up the below of fixed disk (3), fixed disk (3) through rotate coupling assembling (5) with handle mount pad (4) swing joint, direction recognition device (1) is established rotate on coupling assembling (5).
3. Handle movement direction recognition system according to claim 2, characterized in that the rotating connection assembly (5) comprises:
the first U-shaped connecting piece (51) is arranged at the middle position, the first end of the first U-shaped connecting piece (51) is connected with the handle mounting seat (4), and the second end of the first U-shaped connecting piece (51) is an open end;
the first end of the second U-shaped connecting piece (52) is connected with the middle part of the lower end of the fixed disc (3), and the second end of the second U-shaped connecting piece (52) is an opening end;
the rotating connecting body (53) is arranged between the first U-shaped connecting piece (51) and the second U-shaped connecting piece (52), the open end of the first U-shaped connecting piece (51) and the open end of the second U-shaped connecting piece (52) are oppositely arranged and staggered with each other, and the open end of the first U-shaped connecting piece (51) is hinged to a first side face and a second side face, opposite to each other, of the rotating connecting body (53) through a first rotating shaft, so that the rotating connecting body (53) and the second U-shaped connecting piece (52) can rotate towards a first station or a second station around the first rotating shaft; the open end of the second U-shaped connecting piece (52) is hinged to the third side and the fourth side, opposite to each other, of the rotary connecting body (53) through a second rotating shaft, so that the second U-shaped connecting piece (52) can rotate around the second rotating shaft towards a third station or a fourth station.
4. The system of claim 3, wherein a line connecting the first station and the second station is perpendicular to a line connecting the third station and the fourth station.
5. The system for recognizing a moving direction of a handle as claimed in claim 3, wherein the rotary connecting body (53) has a square structure, the first rotary shaft is connected to the centers of the first side surface and the second side surface, respectively, and the second rotary shaft is connected to the centers of the third side surface and the fourth side surface, respectively.
6. The handle movement direction recognition system according to claim 3, characterized in that the direction recognition device (1) comprises:
a magnet (11), wherein the magnet (11) is arranged right below the rotary connecting body (53) through a connecting piece (14);
the Hall sensor (12) is arranged right below the magnet (11) and is used for detecting the magnetic field intensity of the magnet (11) and inducing a voltage corresponding to the magnetic field intensity when the magnet (11) moves along with the rotary connecting body (53);
the circuit board (13) is arranged at the first end of the first U-shaped connecting piece (51), the signal detection input end of the circuit board (13) is connected with the output end of the Hall sensor (12), and the output end of the circuit board (13) is electrically connected with a vehicle main control system.
7. The handle movement direction recognition system of claim 6, wherein the circuit board (13) is of an E-shaped structure and comprises a first connecting plate, a middle connecting plate and a second connecting plate, the middle connecting plate is arranged between the first connecting plate and the second connecting plate, the Hall sensor (12) is connected onto the middle connecting plate, the first connecting plate and the second connecting plate are fixedly connected with the first end of the first U-shaped connecting piece (51), and two sides of the first U-shaped connecting piece (51) respectively penetrate out of the middle connecting plate and the middle connecting plate.
8. The handle movement direction recognition system according to claim 6, wherein the connecting member (14) is provided in a U-shaped configuration, and comprises a bottom plate and two side plates connected to both ends of the bottom plate, the bottom plate is disposed below the rotary connecting body (53), the two side plates are respectively connected to both sides of the second U-shaped connecting member (52), and the magnet (11) is disposed at the center of the bottom plate.
9. The handle movement direction recognition system according to claim 3, further comprising four plunger assemblies, wherein the four plunger assemblies correspond to the first station, the second station, the third station and the fourth station respectively, the tops of the plunger assemblies are in contact with the fixed disk (3), and the handle operating rod (2) moves to drive the fixed disk (3) to push the plunger assemblies in the corresponding movement direction.
10. A work machine comprising a handle movement direction recognition system according to any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223208221.7U CN218619970U (en) | 2022-11-30 | 2022-11-30 | Handle movement direction recognition system and operation machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223208221.7U CN218619970U (en) | 2022-11-30 | 2022-11-30 | Handle movement direction recognition system and operation machine |
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| Publication Number | Publication Date |
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| CN218619970U true CN218619970U (en) | 2023-03-14 |
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| CN202223208221.7U Active CN218619970U (en) | 2022-11-30 | 2022-11-30 | Handle movement direction recognition system and operation machine |
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| CN (1) | CN218619970U (en) |
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- 2022-11-30 CN CN202223208221.7U patent/CN218619970U/en active Active
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