Safety operation control system, method and equipment for mini skid steer loader

Abstract

The invention relates to the technical field of mechanical safety, and discloses a safety operation control system, method and equipment of a mini skid steer loader, the system is composed of a plurality of modules such as a safety locking module and a rotating speed detection module and a controller, each module is responsible for collecting data such as a safety locking signal and an engine rotating speed and sending the data to the controller, and the controller serves as a core and is used for controlling operation of the mini skid steer loader. When the safety locking signal is released and the rotating speed of the engine is lower than a preset threshold value, the pilot electromagnetic valve is controlled to be opened; if the set working flow of the hydraulic oil exceeds the threshold value, the confluence electromagnetic valve is controlled to be switched on, and then the movable arm is driven to act. The controller serves as a core control unit for safe operation control, the detection results are collected in a centralized mode, the hydraulic system of the whole vehicle is controlled according to the detection results, potential safety hazards caused by misoperation, unfamiliarity with equipment, equipment faults and the like are avoided, and the operation safety of the mini skid steer loader is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical safety, and in particular to a safe operation control system, method and equipment for a mini skid loader. Background Art

[0002] Mini skid steer loaders have the characteristics of small overall size, easy access to narrow spaces, and the ability to replace and attach different working devices. Their small size determines that their working environment is mostly small and has high requirements for safe operation. Therefore, it is very necessary to add a safety operating system to the mini skid steer loader.

[0003] Traditional mini skid steer loaders do not have a dedicated safety control system, and their safe operation relies entirely on the driver. However, mini skid steer loaders are relatively complex to operate, requiring a high level of professionalism from the driver. If the cab operator has not received adequate training or is not proficient in operation or is not familiar with the vehicle, misoperation may occur during the operation of the vehicle, resulting in personal injury or equipment damage. Summary of the Invention

[0004] In view of this, the present invention provides a safe operation control system, method and equipment for a mini skid steer loader to solve the problem of low safety of existing mini skid steer loaders.

[0005] In a first aspect, the present invention provides a safety control system for a mini skid loader, the system comprising: a safety locking module, a speed detection module, a pilot solenoid valve, a flow instruction receiving module, a confluence solenoid valve, and a controller, wherein:

[0006] a safety locking module, whose output end is connected to the first input end of the controller, for detecting whether the safety locking signal is released and sending a first detection result to the controller;

[0007] a speed detection module, the output end of which is connected to the second input end of the controller, for detecting the engine speed and sending the engine speed to the controller;

[0008] a pilot solenoid valve, an input end of which is connected to the first output end of the controller, for receiving a first control instruction and starting a pilot operation of the mini skid loader according to the first control instruction;

[0009] a flow instruction receiving module, the output end of which is connected to the third input end of the controller, for receiving a set working flow of the hydraulic oil and sending the set working flow to the controller;

[0010] a converging solenoid valve, the input end of which is connected to the second output end of the controller, for receiving a second control instruction and operating according to the second control instruction;

[0011] a controller configured to generate a first control instruction based on the first detection result and the engine speed, and to generate a second control instruction based on a set working flow rate;

[0012] When the first detection result is that the safety lock signal is released and the engine speed is less than the preset threshold, the pilot solenoid valve is controlled to open and the vehicle safety lock is released; when the set working flow is greater than the preset flow threshold, the converging solenoid valve is controlled to be connected.

[0013] The safety operation and control system of the mini skid loader provided by the present invention adds a controller as the core control unit of the safety operation control, centrally collects the detection results of the personnel detection module, the safety locking module, and the speed detection module, and controls the hydraulic system of the entire vehicle according to the detection results, thereby avoiding safety hazards caused by misoperation, unfamiliarity with the equipment, equipment failure, etc., ensuring that the boom of the mini skid loader moves within the specified conditions and within the safety range, thereby improving the operating safety of the mini skid loader.

[0014] In an optional embodiment, the system further includes: a personnel detection module and an alarm, wherein:

[0015] a personnel detection module, whose output end is connected to the fourth input end of the controller, for detecting whether there is an operator on the operating table and sending a second detection result to the controller;

[0016] an alarm, the input end of which is connected to the third output end of the controller, and which issues an alarm according to the third control instruction of the controller;

[0017] When the operator leaves the operating table, the second detection result is that there is no operator on the operating table. The controller generates a third control instruction and sends it to the alarm based on the release of the safety lock signal, the engine speed is less than the preset threshold, and there is no operator on the operating table.

[0018] The mini skid loader safety control system provided by the present invention has a controller that automatically generates a third control instruction to trigger an alarm when the operator leaves the operating table and confirms that there is no human operation through the second detection result, thereby promptly reminding relevant personnel that the loader is in an unsupervised state, avoiding the loader being in standby mode, energy waste, or safety hazards caused by the operator's mistaken departure.

[0019] In an optional embodiment, the personnel detection module includes: a personnel detection sensor and a proximity switch, wherein:

[0020] The personnel detection sensor, whose output end is connected to the input end of the proximity switch, is used to collect the identity information of the person on the operating table and determine whether the person on the operating table is an authorized operator based on the identity information. If so, it generates an identity confirmation instruction and sends it to the proximity switch;

[0021] The proximity switch has an output end connected to the fourth input end of the controller and is used to close according to the identity confirmation instruction, generate a second detection result and send it to the controller.

[0022] The safe operation and control system for the mini skid loader provided by the present invention collects personnel identity information and verifies authorization through sensors, ensuring that only qualified personnel operate the equipment, eliminating safety hazards and risks of misoperation caused by unauthorized operations from the source. After identity confirmation, the proximity switch is triggered to close and the detection results are sent to the controller, realizing the automated connection between identity authentication and equipment control, and improving the convenience and efficiency of the operation process.

[0023] In an optional embodiment, the safety lock module includes: a safety lock switch and a latching relay, wherein:

[0024] A safety lock switch, whose first output terminal is connected to the input terminal of the latching relay, is used to generate a safety lock signal or a safety release signal and send it to the latching relay;

[0025] A latching relay, whose output terminal is connected to the input terminal of the safety locking switch, is used to generate a latch release signal according to the safety release signal and send it to the safety locking switch;

[0026] When the lock release signal and the safety release signal exist at the same time, the first detection result is that the safety lock signal is released.

[0027] The safety operation and control system of the mini skid loader provided by the present invention forms a "double confirmation" mechanism through two-way signal interaction between the safety lock switch and the latching relay. The lock is released only when the safety release signal and the latching release signal exist at the same time, effectively avoiding the safety risks caused by the false triggering of a single signal and improving the system's ability to prevent misoperation. The feedback design of the latching relay can maintain the stability of the locking state, prevent accidental release of the lock due to signal interruption or abnormal fluctuation, and enhance system reliability.

[0028] In an optional embodiment, the system further includes: an emergency switch, a handle button, an emergency relay, and an emergency solenoid valve, wherein:

[0029] An emergency switch, a first output end of which is connected to the first input end of the emergency relay, and a second output end of which is connected to the first input end of the emergency solenoid valve, for generating an emergency signal;

[0030] A handle button, a first output end of which is connected to the second input end of the emergency relay, for generating a handle signal;

[0031] An emergency relay, whose output end is connected to the second input end of the emergency solenoid valve, is used to receive the emergency signal and the handle signal, and generate a relay signal according to the emergency signal and the handle signal;

[0032] The emergency solenoid valve, whose output end is connected to the boom control end of the mini skid steer loader, is used to control the oil circuit on and off according to the emergency signal and relay signal;

[0033] When the controller cannot generate the first control command or the pilot solenoid valve cannot operate, the emergency switch is used to generate an emergency signal, the handle button is used to generate a handle signal, and the emergency solenoid valve is used to drive the boom of the mini skid loader to move to a preset safe position.

[0034] The mini skid-steer loader safety control system provided by the present invention provides an independent backup control path for mini skid-steer loaders. When a controller or pilot solenoid valve fails and cannot properly control the boom, the emergency switch and handle button, in conjunction with the emergency relay and solenoid valve, quickly respond and drive the boom to a preset safe position, preventing accidents caused by equipment loss of control. The redundant design of multiple components ensures dual confirmation and reliable transmission of emergency signals, reducing the risk of single component failure. Furthermore, the emergency operation process is simple and efficient, allowing for rapid intervention in the event of a sudden failure, ensuring the safety of equipment and personnel, improving the safety and reliability of the equipment under abnormal operating conditions, and reducing losses caused by failures.

[0035] In a second aspect, the present invention provides a method for safe operation and control of a mini skid steer loader, the method being applied to the safe operation and control system of the mini skid steer loader according to any one of the first aspects, the method comprising:

[0036] Obtaining a first detection result, where the first detection result indicates whether the safety lock signal is released;

[0037] When the first detection result is that the safety lock signal is released, obtaining the engine speed;

[0038] When the engine speed is lower than the preset threshold, the pilot solenoid valve is controlled to open, releasing the vehicle safety lock.

[0039] The safe operation and control method for a mini skid steer loader provided by the present invention forms a dual condition constraint by simultaneously monitoring the status of the personnel on the operating console and the safety lock signal. The engine speed is further judged only after the personnel are in place and the safety lock is released, effectively avoiding the risks of unauthorized operation and false start-up. When the engine speed is lower than a preset threshold, the pilot solenoid valve is automatically opened, which can prevent the hydraulic system from being started at a high engine speed and causing impact damage to the loader, and can also achieve safe starting at a low speed, reducing energy consumption and mechanical wear, and improving the operating stability and safety of the loader.

[0040] In an optional embodiment, the method further includes:

[0041] Obtain a second detection result, the second detection result being whether there is an operator on the operating table;

[0042] When the second detection result shows that there is no operator on the operating table and the vehicle safety lock is released, an alarm prompt is issued;

[0043] The set working flow of the hydraulic oil is obtained, and the converging solenoid valve is controlled according to the set working flow. If the set working flow is greater than the preset flow threshold, the converging solenoid valve is controlled to be turned on.

[0044] In an optional embodiment, the method further includes:

[0045] If the pilot solenoid valve cannot be opened, the emergency signal and handle signal are obtained;

[0046] When the emergency signal and the handle signal are obtained at the same time, the emergency solenoid valve is controlled to drive the boom of the mini skid loader to move to a preset safe position.

[0047] The safe operation and control method of the mini skid loader provided by the present invention intelligently controls the merging solenoid valve according to the working flow set by the hydraulic oil, and can automatically open the merging when the flow demand is large, thereby improving the efficiency of the hydraulic system, reducing energy consumption, and ensuring the efficient operation of the equipment. For the common abnormality of pilot solenoid valve failure, an emergency response mechanism is constructed. Through dual confirmation of emergency signal and handle signal, the emergency solenoid valve is driven to return the boom to a safe position, avoiding accidents caused by equipment loss of control, and enhancing the fault tolerance and reliability of the system.

[0048] In a third aspect, the present invention provides a computer device comprising: a memory and a processor, the memory and the processor being communicatively connected to each other, the memory storing computer instructions, and the processor executing the method of the second aspect or any corresponding embodiment thereof by executing the computer instructions.

[0049] In a fourth aspect, the present invention provides a computer-readable storage medium having computer instructions stored thereon, the computer instructions being used to enable a computer to execute the method of the second aspect or any corresponding embodiment thereof. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0051] Figure 1 is a schematic structural diagram of a safety control system for a mini skid loader according to an embodiment of the present invention;

[0052] Figure 2 is a schematic structural diagram of a safety control system for a mini skid loader according to an embodiment of the present invention;

[0053] Figure 3 is a schematic structural diagram of a safety control system for a mini skid loader according to an embodiment of the present invention;

[0054] Figure 4 is a flow chart of a safe operation control method for a mini skid loader according to an embodiment of the present invention;

[0055] Figure 5 is a flow chart of another method for controlling safe operation of a mini skid loader according to an embodiment of the present invention;

[0056] Figure 6 Schematic diagram of the hardware structure of a computer device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0057] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0058] Existing mini skid steer loaders have low safety. When the operator starts the equipment, the entire vehicle can move. Due to the operating characteristics of mini skid steers, operators are very likely to make mistakes and cause danger. The throttle control of mini skid steers is mostly a throttle cable. When the operator finishes the last operation and does not reset the throttle cable, the vehicle is started again. If no safety control is added, operating with high throttle can easily cause danger. When the vehicle malfunctions, the working device cannot be restored to a safe position.

[0059] Based on the above problems, an embodiment of the present invention provides a safe operation control system and method for a mini skid loader. By adding a whole-machine controller VECU as a core control unit, it centrally collects signals from the engine speed, proximity switch, and safety lock switch, judges the signals, and outputs instructions to control the hydraulic system of the entire vehicle, so as to achieve the effect of improving the operating safety of the mini skid loader.

[0060] According to an embodiment of the present invention, a safe operation control system for a mini skid steer loader is provided. Figure 1 As shown, the system includes: a safety locking module 1, a speed detection module 2, a pilot solenoid valve 3, a flow instruction receiving module 4, a converging solenoid valve 5, and a controller 6.

[0061] like Figure 1 As shown, the safety locking module 1 has its output end connected to the first input end of the controller 6 and is used to detect whether the safety locking signal is released and send a first detection result to the controller 6.

[0062] Specifically, the safety lock module 1 can be a separate button or a switch integrated into a rocker switch assembly or a button on the operating panel. When the mini skid loader is started, it is in a safety lock state. The safety lock needs to be released through the button of the safety lock module 1, and the first detection result of the safety lock signal is sent to the controller 6. Only when the first detection result is that the safety lock signal is released, the mini skid loader is allowed to be piloted.

[0063] like Figure 1 As shown, the speed detection module 2 has its output end connected to the second input end of the controller 6 for detecting the engine speed and sending the engine speed to the controller 6 .

[0064] Specifically, since it is difficult to directly detect the engine speed and the output end of the engine is connected to a generator, this embodiment indirectly detects the engine speed by detecting the speed of the generator. When the engine speed is lower than a preset threshold, the mini skid loader is allowed to be operated, thereby preventing the hydraulic system from being started at a high engine speed and causing impact damage to the loader, achieving safe starting at a low speed and reducing energy consumption and mechanical wear.

[0065] like Figure 1 As shown, the pilot solenoid valve 3 has its input end connected to the first output end of the controller 6 and is used to receive a first control instruction and start the pilot operation of the mini skid loader according to the first control instruction.

[0066] Specifically, the function of pilot solenoid valve 3 is to indirectly control the on / off state of the main valve through "pilot pressure." Its specific structure is well-established in the art and will not be further described here. Based on the first and second detection results, as well as the engine speed detection result, controller 6 determines whether to generate a first control instruction. Pilot solenoid valve 3 then operates based on the first control instruction. Upon receiving the first control instruction, pilot solenoid valve 3 opens, fully releasing the vehicle safety lock. The operator can now perform pilot operations on the mini skid loader, including but not limited to controlling the vehicle's boom movement, vehicle travel, and attachment operation. Controller 6 generates the first control instruction if the second detection result indicates an operator is present at the control panel, the first detection result indicates the safety lock signal is released, and the engine speed is below a preset threshold. Otherwise, controller 6 fails to generate the first control instruction.

[0067] like Figure 1As shown, the flow instruction receiving module 4 has its output end connected to the third input end of the controller 6 , and is used to receive the set working flow of the hydraulic oil and send the set working flow to the controller 6 .

[0068] Specifically, the flow instruction receiving module 4 can be an instrument electronic control unit (IECU). The operator uses the IECS to input the set working flow of the hydraulic oil and sends the set working flow to the controller 6. The controller 6 determines how many valves need to be opened by comparing the set working flow with the standard flow of a single valve. If the set working flow is greater than the standard flow of a single valve, when one valve is fully opened, the flow still cannot meet the requirements of the set working flow. At this time, at least two valves need to be opened. If the set working flow is not greater than the standard flow of a single valve, only one valve needs to be opened.

[0069] like Figure 1 As shown, the input end of the converging solenoid valve 5 is connected to the second output end of the controller 6, and is used to receive the second control instruction and act according to the second control instruction.

[0070] Specifically, the converging solenoid valve 5 is a solenoid valve used to control the "merging" or "diverging" of oil circuits in the hydraulic system. In this embodiment, the solenoid coil switches the valve core position, thereby connecting or disconnecting the converging oil circuit between the hydraulic pumps, thereby changing the working flow rate of the hydraulic oil. When the converging oil circuit between the hydraulic pumps is connected, the flow rates of multiple hydraulic pumps are merged.

[0071] The control of the merging solenoid valve 5 is achieved through the second control instruction of the controller 6. The second control instruction is determined according to the set working flow. Specifically, when the set working flow is greater than the standard flow of a single valve, the controller 6 generates a second control instruction and sends it to the merging solenoid valve 5. The merging solenoid valve 5 is connected according to the second control instruction, merging the two oil circuits so that the standard flow of the merging oil circuit meets the requirements of the set working flow, ensuring that the hydraulic system can obtain sufficient hydraulic oil. When the set working flow is not greater than the standard flow of the valve, the controller 6 will not generate the second control instruction. At this time, the merging solenoid valve 5 remains in the disconnected state and the oil circuits will not be merged. A single oil circuit can supply sufficient hydraulic oil to the hydraulic system.

[0072] like Figure 1 As shown, the controller 6 is used to generate a first control instruction according to the first detection result and the engine speed, and to generate a second control instruction according to the set working flow.

[0073] When the first detection result is that the safety lock signal is released and the engine speed is less than the preset threshold, the pilot solenoid valve 3 is controlled to open and the vehicle safety lock is released; when the set working flow is greater than the preset flow threshold, the merging solenoid valve 5 is controlled to be connected.

[0074] Specifically, controller 6 can be a vehicle electronic control unit (VECU). When the mini skid loader is powered on and started, it detects a first detection result from safety lock module 1 to determine whether the safety lock signal has been released. When the safety lock signal has been released, it further detects the generator speed to determine whether the engine speed is below a preset threshold. When the engine speed is below the preset threshold, controller 6 generates a first control instruction and sends it to pilot solenoid valve 3. Pilot solenoid valve 3 opens according to the first control instruction, and the vehicle safety lock is released. If controller 6 does not detect that the safety lock signal has been released, there is no need to further detect the engine speed. When the engine speed is greater than the preset threshold, a pop-up window on the instrument panel may be displayed, as an example only and not limited to this.

[0075] The preset flow rate threshold can be the standard flow rate of a single valve, that is, the maximum flow rate that can pass through when the single valve is fully open. Regarding the control of the working flow rate, when the set working flow rate received by the controller 6 is greater than the standard flow rate of the single valve, the controller 6 generates a second control instruction and sends it to the merging solenoid valve 5, controlling the merging solenoid valve 5 to be turned on. When the set working flow rate received by the controller 6 is not greater than the standard flow rate of the single valve, the controller 6 does not generate the second control instruction, and the merging solenoid valve 5 remains in the off state.

[0076] The safe operation and control system for the mini skid loader provided in this embodiment adds a controller 6 as the core control unit for safe operation and control, centrally collects the detection results of the personnel detection module 7, the safety locking module 1, and the speed detection module 2, and controls the hydraulic system of the entire vehicle according to the detection results, thereby avoiding safety hazards caused by misoperation, unfamiliarity with the equipment, equipment failure, etc., ensuring that the boom of the mini skid loader moves within the specified conditions and within the safety range, thereby improving the operating safety of the mini skid loader.

[0077] In some optional embodiments, such as Figure 2 As shown, the system also includes: a personnel detection module 7, an alarm 8, wherein,

[0078] The personnel detection module 7 , whose output end is connected to the fourth input end of the controller 6 , is used to detect whether there is an operator on the operating table and send a second detection result to the controller 6 .

[0079] Specifically, after the mini skid loader is started, in order to avoid improper operation of the mini skid loader due to unfamiliarity with the equipment or illegal operation, direct operation is not allowed. This embodiment adds a personnel detection module 7 to detect in real time whether there is an operator on the operating table. Only when there is an operator on the operating table is the mini skid loader allowed to be operated. When the operator leaves the operating table, the second detection result is that there is no operator on the operating table. At this time, it is necessary to ensure that the mini skid loader is not allowed to be operated to avoid danger.

[0080] The alarm device 8 has an input terminal connected to the third output terminal of the controller 6 and issues an alarm according to the third control instruction of the controller 6 .

[0081] When the operator leaves the operating table, the second detection result is that there is no operator on the operating table. The controller generates a third control instruction and sends it to the alarm based on the release of the safety lock signal, the engine speed is less than the preset threshold, and there is no operator on the operating table.

[0082] Specifically, alarm 8 can be an audible alarm, a light alarm, an audible and visual alarm, etc. In conjunction with the reference scenario of this embodiment, alarm 8 is an audible and visual alarm integrated into the instrument panel of a mini skid loader. When the operator leaves the operating console, the second detection result indicates that there is no operator at the console. Based on the release of the safety lock signal, the engine speed being less than a preset threshold, and the absence of an operator at the console, controller 6 generates a third control instruction and sends it to alarm 8. The conditions for generating the third control instruction are that the vehicle safety lock is released and there is no operator at the console. Upon receiving the third control instruction, alarm 8 emits an audible and visual alarm, prompting the operator to close safety lock switch 101 to prevent accidental operation. When the operator notices the alarm, they can close safety lock switch 101. After the safety lock switch is closed, a safety lock signal is generated, and the alarm stops.

[0083] The safe operation and control system for the mini skid loader provided in this embodiment is such that when the operator leaves the operating console and it is confirmed through the second detection result that there is no human operation, the controller 6 automatically generates a third control instruction to trigger the alarm 8 to alarm, thereby promptly reminding relevant personnel that the loader is in an unsupervised state, thereby avoiding the loader being in standby state, energy waste or safety hazards caused by the operator's mistaken departure.

[0084] In some optional embodiments, such as Figure 2 As shown, the personnel detection module 7 includes: a personnel detection sensor 701 and a proximity switch 702 .

[0085] The output end of the personnel detection sensor 701 is connected to the input end of the proximity switch 702, and is used to collect the identity information of the person on the operating table, and determine whether the person on the operating table is an authorized operator based on the identity information. If so, an identity confirmation instruction is generated and sent to the proximity switch 702.

[0086] Specifically, the personnel detection sensor 701 has two functions: on the one hand, it needs to confirm that there is someone on the operating table; on the other hand, it needs to ensure that the person on the operating table is an authorized operator who can operate the mini skid steer loader.

[0087] Biometrics or radio frequency identification (RFID) technology can be used to collect the identity information of the person on the operating table to achieve accurate identity verification. Taking common biometric sensors as an example, the fingerprint pattern, facial features and other biometric information of the person can be collected through a fingerprint recognition module or a facial recognition camera, and compared with the authorized personnel database pre-stored in the system. For example, a high-precision facial recognition sensor is installed on the operating table of a mini skid loader. When the operator approaches, the sensor quickly captures his facial features and matches them one by one with the authorized staff information in the database. If the match is successful, it is confirmed that the person is an authorized operator. The sensor generates an identity confirmation instruction and sends it to the subsequent proximity switch 702 in the form of an electrical signal; if the match fails, no instruction is sent. At the same time, a trigger alarm system can be set to prompt that an unauthorized person is approaching.

[0088] The output end of the proximity switch 702 is connected to the fourth input end of the controller 6 , and is used to close according to the identity confirmation instruction, generate a second detection result and send it to the controller 6 .

[0089] Specifically, after receiving the identity confirmation instruction, the proximity switch 702 automatically closes and generates a second detection result and sends it to the controller 6.

[0090] Specifically, the proximity switch can be a magnetic induction switch, which outputs a signal when there is iron in the sensing area. It is usually located in front of the pedal where a person stands. When a person stands on it, the pedal sinks and moves forward due to gravity, and the proximity switch can detect the pedal. The proximity switch closes, generating a second detection result that there is someone on the operating table.

[0091] The safe operation and control system of the mini skid loader provided in this embodiment collects personnel identity information and verifies authorization through sensors to ensure that only qualified personnel operate the equipment, eliminating safety hazards and risks of misoperation caused by unauthorized operations from the source. After identity confirmation, the proximity switch 702 is triggered to close and the detection result is sent to the controller 6, realizing the automated connection between identity authentication and equipment control, and improving the convenience and efficiency of the operation process.

[0092] In some optional embodiments, such as Figure 2 As shown, the safety locking module 1 includes: a safety locking switch 101 and a latching relay 102 .

[0093] The safety lock switch 101 has a first output terminal connected to the input terminal of the latch relay 102 and is used to generate a safety lock signal or a safety release signal and send it to the latch relay 102 .

[0094] The latch relay 102 has an output end connected to the input end of the safety lock switch 101 and is used to generate a latch release signal according to the safety release signal and send the latch release signal to the safety lock switch 101 .

[0095] When the lock release signal and the safety release signal exist at the same time, the first detection result is that the safety lock signal is released.

[0096] Specifically, the safety lock switch 101 can be a two-way button, such as a rocker switch, for example, but not limited to this. When the mini skid loader requires maintenance or is not in operation, the operator switches the safety lock switch 101 to the lock mode. At this time, the internal circuit structure of the switch changes, generating a safety lock signal, which is sent to the latching relay 102 in the form of an electrical signal through the first output terminal, ensuring that the device cannot be started until the lock is released. When the mini skid loader is powered on and started, before the device operates normally, the safety lock switch 101 should be in the lock mode. The operator needs to verify the safety conditions on site and then switch the safety lock switch 101 to the unlock mode. At this time, the safety lock switch 101 generates a safety release signal and sends it to the latching relay 102, indicating that the device is ready for operation.

[0097] The latching relay 102 precisely controls the device's lock status by interacting with the safety lock switch 101. When the latching relay 102 receives a safety release signal from the safety lock switch 101, its internal circuitry is activated, and after logical processing, a latch release signal is generated and fed back to the input of the safety lock switch 101. Only when the safety lock switch 101 receives both its own safety release signal and the latch release signal fed back from the latching relay 102 does it determine that the safety lock signal has been released. In this case, the first detection result indicates that the safety lock signal has been released, avoiding misinterpretation of the lock due to a single signal failure and ensuring that the device operates in a truly safe state.

[0098] It should be noted that if the mini skid loader is in unlocked mode after powering on and before normal operation, the safety lock switch 101 must be closed and then opened again for it to generate a safety release signal. Once the safety lock signal is released, the mini skid loader is unlocked. At this point, the controller 6 detects the signal from the proximity switch 702 to determine whether the operator is properly positioned on the operating console. If the controller 6 fails to detect the second detection result from the proximity switch 702, an alarm is issued via the alarm 8. If the vehicle is in the safety lock state, the proximity switch 702 signal does not need to be detected.

[0099] The safety operation and control system for the mini skid loader provided in this embodiment forms a "double confirmation" mechanism through the two-way signal interaction between the safety lock switch 101 and the latching relay 102. The lock is released only when the safety release signal and the latching release signal exist at the same time, effectively avoiding the safety risks caused by the false triggering of a single signal and improving the system's ability to prevent misoperation. The feedback design of the latching relay 102 can maintain the stability of the locking state, prevent accidental release of the lock due to signal interruption or abnormal fluctuation, and enhance system reliability.

[0100] In some optional embodiments, such as Figure 3 As shown, the system further includes: an emergency switch 9, a handle button 10, an emergency relay 11, and an emergency solenoid valve 12.

[0101] The emergency switch 9 has a first output end connected to a first input end of the emergency relay 11 and a second output end connected to a first input end of the emergency solenoid valve 12 for generating an emergency signal.

[0102] Specifically, the emergency switch 9 is the core trigger device for emergency operations of the mini skid loader. It is usually a striking red mushroom-head button, installed in a position on the operating table for quick operation. When the controller 6 fails and cannot generate the first control instruction, or the pilot solenoid valve 3 cannot operate normally due to mechanical jamming, circuit damage, etc., the operator can immediately press the emergency switch 9. At the moment of pressing, the contacts inside the emergency switch 9 are closed, and its first output end and second output end simultaneously output the emergency signal. The signal is transmitted in the form of an electrical signal: the first output end sends the signal to the first input end of the emergency relay 11 as a trigger signal for the relay to operate; the second output end directly transmits the signal to the first input end of the emergency solenoid valve 12, providing initial power for the operation of the solenoid valve.

[0103] The first output end of the handle button 10 is connected to the second input end of the emergency relay 11 for generating a handle signal.

[0104] Specifically, the handle button 10 is used to generate auxiliary signals during emergency operations and is usually integrated into the operating handle of the loader, so that the operator can quickly trigger it while pressing the emergency switch 9. During normal operation, the handle button 10 is in a non-working state; when entering the emergency operation mode, the operator needs to operate the handle button 10 synchronously after pressing the emergency switch 9, so that the internal circuit of the handle button 10 is turned on, and its first output end generates a handle signal, and sends the signal to the second input end of the emergency relay 11. The handle signal and the emergency signal generated by the emergency switch 9 together constitute a double confirmation mechanism for emergency operations, ensuring that the execution of emergency actions is based on the clear intention of the operator. For example, when working in a narrow alley, if the pilot solenoid valve 3 suddenly fails and the boom cannot be retracted, the operator presses the emergency switch 9 and then operates the handle button 10 to clearly transmit the instruction of "retracting the boom to a safe position" to the system to avoid accidents caused by misoperation.

[0105] The emergency relay 11 has an output end connected to the second input end of the emergency solenoid valve 12 and is used to receive the emergency signal and the handle signal and generate a relay signal according to the emergency signal and the handle signal.

[0106] Specifically, when the first input end of the emergency relay 11 receives the emergency signal sent by the emergency switch 9, and the second input end receives the handle signal generated by the handle button 10, the internal electromagnetic coil is energized, generating an electromagnetic force to attract the armature to move. After the armature moves, the output end of the emergency relay 11 is turned on, and a relay signal is generated according to the emergency signal and the handle signal, and sent to the second input end of the emergency solenoid valve 12. Compared with the initial emergency signal and handle signal, the relay signal has a stronger driving ability and can reliably drive the emergency solenoid valve 12 to move. For example, in a humid working environment, even if the emergency signal and the handle signal are slightly attenuated due to moisture in the line, the emergency relay 11 can ensure that the emergency solenoid valve 12 receives a signal of sufficient strength through amplification processing, thereby ensuring the smooth execution of the emergency operation.

[0107] The emergency solenoid valve 12 has an output end connected to the boom control end of the mini skid steer loader and is used to control the on-off of the oil circuit according to the emergency signal and the relay signal.

[0108] When the controller 6 cannot generate the first control instruction or the pilot solenoid valve 3 cannot be operated, the emergency switch 9 is used to generate an emergency signal, the handle button 10 is used to generate a handle signal, and the emergency solenoid valve 12 is used to drive the boom of the mini skid loader to move to a preset safe position.

[0109] Specifically, the emergency solenoid valve 12 is the final actuator for the mini skid steer loader's emergency actions. Its output is directly connected to the loader's boom control terminal. When the first input of the emergency solenoid valve 12 receives an emergency signal from the emergency switch 9 and the second input receives a relay signal from the emergency relay 11, the internal electromagnetic coil generates a magnetic field, driving the valve core to move against the spring resistance, changing the flow direction of the hydraulic oil. During normal operation, the boom's hydraulic oil circuit is controlled by the pilot solenoid valve 3. In emergency mode, when the operator simultaneously presses the emergency switch and the handle button, the emergency solenoid valve 12 switches the oil circuit, directing the hydraulic oil along a predetermined path to the boom's hydraulic cylinder. This effectively disconnects the hydraulic system's oil circuit, relieving the system's pressure and allowing the boom to slowly descend under gravity. For example, if the loader is operating on a slope and the controller 6 suddenly fails, the emergency solenoid valve 12, upon receiving these dual signals, retracts the boom and lowers it to a predetermined safe position, preventing the loader from tipping over due to an unstable center of gravity and ensuring the safety of equipment and personnel.

[0110] The mini skid loader safety control system provided in this embodiment provides an independent backup control path for mini skid loader operations. When the controller 6 or pilot solenoid valve 3 fails and cannot control the boom properly, the emergency switch 9 and handle button 10, in conjunction with the emergency relay 11 and solenoid valve, quickly respond and drive the boom to a preset safe position, avoiding safety accidents caused by equipment loss of control. The redundant design of multiple components enables dual confirmation and reliable transmission of emergency signals, reducing the risk of single component failure. Furthermore, the emergency operation process is simple and efficient, allowing for rapid intervention in the event of a sudden failure, ensuring the safety of equipment and personnel, improving the safety and reliability of the equipment under abnormal operating conditions, and reducing losses caused by failures.

[0111] According to this embodiment, an embodiment of a safe operation control method for a mini skid loader is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0112] In this embodiment, a safe operation control method for a mini skid loader is provided, which can be used in the above-mentioned computer system or the safe operation control system for the mini skid loader in the previous embodiment, and will not be repeated here. Figure 4 FIG. 1 is a flow chart of a safe operation control method for a mini skid loader according to this embodiment. Figure 4 As shown, the process includes the following steps:

[0113] Step S101: obtaining a first detection result, where the first detection result is whether the safety lock signal is released.

[0114] Step S102: When the first detection result is that the safety lock signal is released, the engine speed is obtained.

[0115] Step S103: When the engine speed is less than a preset threshold, the pilot solenoid valve 3 is controlled to open, releasing the vehicle safety lock.

[0116] The safe operation and control method for a mini skid steer loader provided in this embodiment forms a dual condition constraint by simultaneously monitoring the status of the personnel at the operating console and the safety lock signal. The engine speed is further judged only after the personnel are in place and the safety lock is released, effectively avoiding the risks of unauthorized operation and false start-up. When the engine speed is lower than the preset threshold, the pilot solenoid valve 3 is automatically opened, which can prevent the hydraulic system from starting at a high engine speed from causing impact and damaging the loader, and can also achieve safe starting at a low speed, reducing energy consumption and mechanical wear, and improving the operating stability and safety of the loader.

[0117] In some optional embodiments, such as Figure 5 As shown, the method further includes:

[0118] Step S104: Obtain a second detection result, where the second detection result is whether there is an operator on the operating table.

[0119] Step S105: When the second detection result shows that there is no operator on the operating console and the vehicle safety lock is released, an alarm prompt is issued.

[0120] Step S106 , obtaining the set working flow of the hydraulic oil, and controlling the merging solenoid valve 5 according to the set working flow. If the set working flow is greater than the preset flow threshold, the merging solenoid valve 5 is controlled to be turned on.

[0121] Step S107: If the pilot solenoid valve 3 cannot be opened, an emergency signal and a handle signal are obtained.

[0122] Step S108 , when the emergency signal and the handle signal are obtained at the same time, the emergency solenoid valve 12 is controlled to drive the boom of the mini skid loader to move to a preset safe position.

[0123] The safe operation and control method for a mini skid loader provided in this embodiment intelligently controls the merging solenoid valve according to the working flow set by the hydraulic oil, and can automatically open the merging when the flow demand is large, thereby improving the efficiency of the hydraulic system, reducing energy consumption, and ensuring efficient operation of the equipment. For the common abnormality of pilot solenoid valve failure, an emergency response mechanism is constructed. Through dual confirmation of the emergency signal and the handle signal, the emergency solenoid valve is driven to return the boom to a safe position, thereby avoiding accidents caused by equipment loss of control and enhancing the fault tolerance and reliability of the system.

[0124] The further detailed description of each of the above steps is the same as that of the above corresponding system embodiments and will not be repeated here.

[0125] The embodiment of the present invention also provides a computer device having the above Figure 1-3 A safe handling control system for any mini skid steer loader shown.

[0126] See also Figure 6 , Figure 6 is a structural diagram of a computer device provided by an optional embodiment of the present invention, such as Figure 6 As shown, the computer device includes: one or more processors 10, memory 20, and interfaces for connecting various components, including high-speed interfaces and low-speed interfaces. Various components utilize different buses to communicate with each other and can be installed on a common mainboard or installed in other ways as needed. The processor can process the instructions executed in the computer device, including instructions stored in the memory or on the memory to display the graphical information of the GUI on an external input / output device (such as, a display device coupled to the interface). In some optional embodiments, if necessary, multiple processors and / or multiple buses can be used together with multiple memories and multiple memories. Equally, multiple computer devices can be connected, and each device provides part of the necessary operations (for example, as a server array, a group of blade servers, or a multi-processor system). Figure 6 A processor 10 is taken as an example.

[0127] The processor 10 may be a central processing unit, a network processor, or a combination thereof. The processor 10 may further include a hardware chip. The hardware chip may be an application-specific integrated circuit, a programmable logic device, or a combination thereof. The programmable logic device may be a complex programmable logic device, a field programmable gate array, a general purpose array logic, or any combination thereof.

[0128] The memory 20 stores instructions that can be executed by at least one processor 10, so that the at least one processor 10 executes the method shown in the above embodiment.

[0129] The memory 20 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and application programs required for at least one function; the data storage area may store data created based on the use of the computer device, etc. In addition, the memory 20 may include a high-speed random access memory, and may also include a non-transient memory, such as at least one disk storage device, a flash memory device, or other non-transient solid-state storage device. In some optional embodiments, the memory 20 may optionally include a memory remotely located relative to the processor 10, and these remote memories may be connected to the computer device via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0130] The memory 20 may include a volatile memory, such as a random access memory; the memory may also include a non-volatile memory, such as a flash memory, a hard disk or a solid-state drive; the memory 20 may also include a combination of the above types of memory.

[0131] The computer device further includes a communication interface 30 for the computer device to communicate with other devices or a communication network.

[0132] The embodiment of the present invention also provides a computer-readable storage medium. The above-mentioned method according to the embodiment of the present invention can be implemented in hardware, firmware, or implemented as a computer code that can be recorded in a storage medium, or implemented as a computer code that is originally stored in a remote storage medium or a non-temporary machine-readable storage medium and downloaded through a network and will be stored in a local storage medium, so that the method described herein can be stored in such software processing on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. Among them, the storage medium can be a magnetic disk, an optical disk, a read-only storage memory, a random access memory, a flash memory, a hard disk or a solid-state drive, etc.; further, the storage medium can also include a combination of the above-mentioned types of memory. It can be understood that a computer, a processor, a microprocessor controller or programmable hardware includes a storage component that can store or receive software or computer code. When the software or computer code is accessed and executed by a computer, a processor or hardware, the method shown in the above embodiment is implemented.

[0133] Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention. Such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A safe operation control system for a mini skid steer loader, characterized in that: The system includes: a safety locking module, a speed detection module, a pilot solenoid valve, a flow instruction receiving module, a confluence solenoid valve, and a controller, wherein: a safety locking module, whose output end is connected to the first input end of the controller, for detecting whether the safety locking signal is released and sending a first detection result to the controller; a speed detection module, the output end of which is connected to the second input end of the controller, for detecting the engine speed and sending the engine speed to the controller; a pilot solenoid valve, an input end of which is connected to the first output end of the controller, for receiving a first control instruction and starting a pilot control of the mini skid loader according to the first control instruction; a flow instruction receiving module, the output end of which is connected to the third input end of the controller, for receiving a set working flow of the hydraulic oil and sending the set working flow to the controller; a converging solenoid valve, the input end of which is connected to the second output end of the controller, for receiving a second control instruction and operating according to the second control instruction; a controller configured to generate a first control instruction based on the first detection result and the engine speed, and to generate a second control instruction based on a set working flow rate; When the first detection result is that the safety lock signal is released and the engine speed is less than the preset threshold, the pilot solenoid valve is controlled to open and the vehicle safety lock is released; when the set working flow is greater than the preset flow threshold, the converging solenoid valve is controlled to be connected.

2. The system according to claim 1, wherein: The system also includes: a personnel detection module and an alarm, wherein: a personnel detection module, whose output end is connected to the fourth input end of the controller, for detecting whether there is an operator on the operating table and sending a second detection result to the controller; an alarm, the input end of which is connected to the third output end of the controller, and which issues an alarm according to the third control instruction of the controller; When the operator leaves the operating table, the second detection result is that there is no operator on the operating table. The controller generates a third control instruction and sends it to the alarm based on the release of the safety lock signal, the engine speed is less than the preset threshold, and there is no operator on the operating table.

3. The system according to claim 2, characterized in that The personnel detection module includes: a personnel detection sensor and a proximity switch, wherein: A personnel detection sensor, whose output end is connected to the input end of the proximity switch, is used to collect the identity information of the person on the operating table and determine whether the person on the operating table is an authorized operator based on the identity information. If so, an identity confirmation instruction is generated and sent to the proximity switch; A proximity switch, whose output end is connected to the fourth input end of the controller, is used to close according to the identity confirmation instruction, generate a second detection result and send it to the controller.

4. The system according to claim 1, wherein: The safety locking module includes: a safety locking switch and a latching relay, wherein: a safety lock switch, a first output end of which is connected to the input end of the latching relay, for generating a safety lock signal or a safety release signal and sending it to the latching relay; a latch relay, the output end of which is connected to the input end of the safety lock switch, for generating a latch release signal according to the safety release signal and sending the latch release signal to the safety lock switch; When the lock release signal and the safety release signal exist at the same time, the first detection result is that the safety lock signal is released.

5. The system according to claim 1, wherein: The system also includes: an emergency switch, a handle button, an emergency relay, and an emergency solenoid valve, wherein: an emergency switch, a first output end of which is connected to the first input end of the emergency relay, and a second output end of which is connected to the first input end of the emergency solenoid valve, for generating an emergency signal; A handle button, a first output end of which is connected to the second input end of the emergency relay, for generating a handle signal; an emergency relay, whose output end is connected to the second input end of the emergency solenoid valve, for receiving the emergency signal and the handle signal, and generating a relay signal according to the emergency signal and the handle signal; An emergency solenoid valve, the output end of which is connected to the boom control end of the mini skid steer loader, for controlling the on-off of the oil circuit according to the emergency signal and the relay signal; When the controller fails to generate the first control instruction or the pilot solenoid valve fails to operate, the emergency switch is used to generate an emergency signal, the handle button is used to generate a handle signal, and the emergency solenoid valve is used to drive the boom of the mini skid loader to move to a preset safe position.

6. A method for safe operation and control of a mini skid steer loader, characterized in that: The method is applied to a safe operation control system of a mini skid steer loader according to any one of claims 1 to 5, and the method comprises: Obtaining a first detection result, where the first detection result indicates whether the safety lock signal is released; When the first detection result is that the safety lock signal is released, obtaining the engine speed; When the engine speed is less than a preset threshold, the pilot solenoid valve is controlled to open, releasing the vehicle safety lock.

7. The method according to claim 6, characterized in that The method further comprises: Obtain a second detection result, where the second detection result indicates whether there is an operator on the operating table; When the second detection result is that there is no operator on the operating table and the vehicle safety lock is released, an alarm prompt is issued; The set working flow of the hydraulic oil is obtained, and the converging solenoid valve is controlled according to the set working flow. If the set working flow is greater than a preset flow threshold, the converging solenoid valve is controlled to be turned on.

8. The method according to claim 6, characterized in that The method further comprises: If the pilot solenoid valve cannot be opened, an emergency signal and a handle signal are obtained; When the emergency signal and the handle signal are obtained at the same time, the emergency solenoid valve is controlled to drive the arm of the mini skid loader to move, so that the arm moves to a preset safe position.

9. A computer device, characterized in that: include: A memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the method according to any one of claims 6 to 8 by executing the computer instructions.

10. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a computer to execute the method according to any one of claims 6 to 8.

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