Arm end working condition self-recognition control system and method of wheeled crane

Abstract

The invention relates to the technical field of wheeled cranes, in particular to an arm end working condition self-recognition control system and method of a wheeled crane. The control system comprises a first detection assembly which is used for detecting the installation working condition of each workpiece at the boom end of the wheeled crane; the second detection assembly is used for detecting the loading working condition of the boom end of the wheeled crane; the arm end controller is used for determining an arm end working condition combination code according to the real-time working condition, detected by the detection assembly, of each workpiece; and the moment limiter is configured to determine the actual hoisting weight according to the load working condition, recognize the rated hoisting weight under the current working condition according to the arm end working condition combination code and trigger unloading operation when the actual hoisting weight exceeds the rated hoisting weight. The rated hoisting weight under the current configuration is automatically identified and determined through the first detection assembly, then the current actual hoisting weight is determined through the second detection assembly, unloading can be conducted when the actual hoisting weight is larger than the rated hoisting weight, and therefore the situation that the interior of the cargo boom is damaged due to overload hoisting weight is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of wheeled cranes, and in particular to a self-identification control system and method for an arm end working condition of a wheeled crane. Background Art

[0002] Currently, wheeled cranes are equipped with torque limiting systems. Length and angle sensors in these systems provide the torque limiter with information about the crane's main boom length and angle. The torque limiter then calculates the rated load capacity based on the current boom length and angle, along with the operator's settings for the hook, jib, boom end, and counterweight, to ensure crane safety. Existing wheeled cranes rely on the operator to select these boom end configurations through a display. If the operator selects the wrong setting or intentionally chooses an inappropriate setting, causing the torque limiter's permitted load capacity to exceed the actual rated load, the overload could cause internal damage to the boom or even cause the crane to overturn. Summary of the Invention

[0003] The purpose of the present invention is to provide a self-identification control system and method for the arm end working condition of a wheeled crane. The first detection component detects the installation working condition of each workpiece to automatically identify and determine the rated lifting weight under the current configuration, and then uses the second detection component to detect the load working condition of the arm end of the wheeled crane to determine the current actual lifting weight. When the actual lifting weight is greater than the rated lifting weight, the load can be unloaded in time, thereby avoiding damage to the inside of the crane arm due to overloaded lifting weight and improving safety.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions: In a first aspect, the present invention provides a boom-end working condition self-identification control system for a wheeled crane, comprising: The first detection component is used to detect the installation conditions of each workpiece at the arm end of the wheeled crane; The second detection component is used to detect the load condition of the arm end of the wheel crane; The arm end controller is used to determine the arm end working condition combination code according to the real-time working conditions of each workpiece detected by the detection component; The torque limiter is configured to determine the actual lifting weight according to the load working condition, and to identify the rated lifting weight under the current working condition according to the arm end working condition combination code, and to trigger an unloading operation when the actual lifting weight exceeds the rated lifting weight.

[0005] Optionally, the first detection component includes: The main hook model radio frequency identification device is used to detect whether the main hook is installed at the arm end and generate a signal A. If the main hook is installed, the signal A is the hook tonnage M. If the main hook is not installed, the signal A is 0; Auxiliary hook model radio frequency identification device, used to detect whether the auxiliary hook is installed at the arm end and generate signal B. If the auxiliary hook is installed, signal B is the hook tonnage N. If the auxiliary hook is not installed, signal B is 0; A jib side-mounted switch detection device is used to detect whether the jib is installed on the left side of the main arm to generate a signal C. If the jib is installed on the left side of the main arm, the signal C is 1; if the jib is not installed on the left side of the main arm, the signal C is 0; A jib front-mounted switch detection device is used to detect whether the jib is installed in front of the main arm to generate a signal D. If the jib is installed in front of the main arm, the signal D is 1; if the jib is not installed in front of the main arm, the signal D is 0; The arm end pulley side-mounted switch detection device is used to detect whether the arm end pulley is installed on the right side of the main arm to generate a signal E. If the arm end pulley is installed on the right side of the main arm, the signal E is 1; if the arm end pulley is not installed on the right side of the main arm, the signal E is 0; The arm-end pulley front-mounted switch detection device is used to detect whether the arm-end pulley is installed on the front side of the main arm to generate a signal F. If the arm-end pulley is installed on the front side of the main arm, the signal F is 1; if the arm-end pulley is not installed on the front side of the main arm, the signal F is 0.

[0006] Optionally, the arm end working condition combination code is composed of signal A, signal B, signal C, signal D, signal E and signal F, and the rated lifting weight is determined by looking up the arm end working condition combination code in a table.

[0007] Optionally, the arm end working condition combination code is transmitted to the torque limiter via CAN.

[0008] Optionally, the second detection component includes: An angle sensor is provided on the main arm and is used to detect the luffing angle of the main arm; A length sensor is provided on the main arm and is used to detect the telescopic length of the main arm; The oil pressure sensor is installed on the valve port of the luffing cylinder and is used to detect the luffing oil pressure information.

[0009] Optionally, the actual lifting weight is determined by looking up information of the main arm luffing angle, main arm telescopic length and luffing oil pressure.

[0010] Optionally, the main hook model radio frequency identification device includes a main hook model radio frequency detector and a main hook coding information block, the main hook model radio frequency detector is installed on the right side vertical plate of the main boom arm head, and the main hook coding information block is installed on the main boom hook. The main hook model radio frequency detector is used to transmit radio frequency waves to the main hook coding information block to identify the coding information M of the main hook coding information block, where M refers to the hook tonnage. At this time, the content of signal A is M. If the main boom hook is not installed, the content of signal A is 0; The auxiliary hook model radio frequency identification device includes an auxiliary hook model radio frequency detector and an auxiliary hook coding information block. The auxiliary hook model radio frequency detector is installed on the right side vertical plate of the auxiliary arm arm head, and the auxiliary hook coding information block is installed on the auxiliary arm hook. The auxiliary hook model radio frequency detector is used to transmit radio frequency waves to the auxiliary hook coding information block to identify the coding information N of the auxiliary hook coding information block, where N refers to the hook tonnage. At this time, the content of signal B is N. If no auxiliary hook is installed, the content of signal B is 0.

[0011] Optionally, the jib side installation switch detection device includes a jib side installation detection switch and a jib side installation detection plate, the jib side installation detection switch is installed on the vertical plate on the left side of the main arm, and the jib side installation detection plate is installed on the side of the jib. When the jib is installed on the left side of the main arm, the jib side installation detection switch is triggered and the signal C is 1; otherwise, the jib side installation detection switch is not triggered and the signal C is 0; The jib front installation switch detection device includes a jib front installation detection switch and a jib front installation detection plate. The jib front installation detection switch is installed on the vertical plate in front of the main arm head, and the jib front installation detection plate is installed on the crossbeam of the jib rotating frame. When the jib is installed in front of the main arm, the jib front installation detection switch is triggered and the signal D is 1. Otherwise, the jib front installation detection switch is not triggered and the signal D is 0.

[0012] Optionally, the arm-end pulley side-mounted switch detection device includes an arm-end pulley side-mounted detection switch and an arm-end pulley side-mounted detection plate, the arm-end pulley side-mounted detection switch is mounted on the right vertical plate of the main arm head, and the arm-end pulley side-mounted detection plate is mounted on the side of the arm-end pulley. When the arm-end pulley is mounted on the right side of the main arm head, the arm-end pulley side-mounted detection switch is triggered, and the signal E is 1; otherwise, the arm-end pulley side-mounted detection switch is not triggered, and the signal E is 0; The arm-end pulley front-mounted switch detection device includes an arm-end pulley front-mounted detection switch and an arm-end pulley front-mounted detection plate. The arm-end pulley front-mounted detection switch is installed on the front vertical plate of the main arm arm head, and the arm-end pulley front-mounted detection plate is installed on the rear vertical plate of the arm-end pulley. When the arm-end pulley is installed on the front side of the main arm arm head, the arm-end pulley front-mounted detection switch is triggered and the signal F is 1. Otherwise, the arm-end pulley front-mounted detection switch is not triggered and the signal F is 0.

[0013] In a second aspect, the present invention provides a method for self-identification and control of the arm end working condition of a wheeled crane, which is based on the arm end working condition self-identification control system of the wheeled crane, and the method comprises: Obtain the installation conditions of each workpiece at the arm end of the wheeled crane; Obtain the load condition of the arm end of the wheel crane; Determine the arm end working condition combination code according to the real-time working condition of each workpiece detected by the detection component; The actual lifting weight is determined according to the load working condition, and the rated lifting weight under the current working condition is identified according to the arm end working condition combination code, and an unloading operation is triggered when the actual lifting weight exceeds the rated lifting weight.

[0014] Compared with the prior art, the present invention has the following beneficial effects: the present invention detects the installation conditions of each workpiece through the first detection component to automatically identify and determine the rated lifting weight under the current configuration, and then detects the load condition of the arm end of the wheeled crane through the second detection component to determine the current actual lifting weight. When the actual lifting weight is greater than the rated lifting weight, the load can be unloaded in time, thereby avoiding damage to the inside of the crane arm due to overloaded lifting weight to improve safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural topology diagram of the control system in Example 1; Figure 2 Schematic diagram of the control system layout in Example 1 Figure 1 ; Figure 3 Schematic diagram of the control system layout in Example 1 Figure 2 ; Figure 4 Schematic diagram of the control system layout in Example 1 Figure 3 .

[0016] Numbers in the figure: 1. Jib side installation detection plate; 2. Jib side installation detection switch; 3. Arm-end pulley side installation detection switch; 4. Arm-end pulley side installation detection plate; 5. Arm-end pulley front installation detection plate; 6. Arm-end pulley front installation detection switch; 7. Arm-end controller; 8. Main hook coding information block; 9. Main hook model RF detector; 10. Jib front installation detection switch; 11. Jib front installation detection plate; 12. Auxiliary hook model RF detector; 13. Auxiliary hook coding information block; 14. Winding box; 15. Torque limiter; 16. Display; 17. Oil pressure sensor. DETAILED DESCRIPTION

[0017] It should be noted that: the technical solution of the present invention is described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of the present invention and the specific features in the embodiments are detailed descriptions of the technical solution of the present invention, rather than limitations on the technical solution of the present invention. In the absence of conflict, the embodiments of the present invention and the technical features in the embodiments can be combined with each other. The term "and / or" is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " generally indicates that the related objects before and after are in an "or" relationship. Example 1

[0018] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0019] The present embodiment provides an arm-end working condition self-identification control system for a wheeled crane, characterized in that it includes a first detection component, a second detection component, an arm-end controller 7 and a torque limiter 15, wherein the first detection component is used to detect the installation working condition of each workpiece at the arm-end of the wheeled crane; the second detection component is used to detect the load working condition of the arm-end of the wheeled crane; the arm-end controller 7 is used to determine the arm-end working condition combination code according to the real-time working condition of each workpiece detected by the detection component; the torque limiter 15 is configured to determine the actual lifting weight according to the load working condition, and to identify the rated lifting weight under the current working condition according to the arm-end working condition combination code, and to trigger the unloading operation when the actual lifting weight exceeds the rated lifting weight.

[0020] Among them, the first detection component includes a main hook model radio frequency identification device, a secondary hook model radio frequency identification device, a jib side-mounted switch detection device, a jib front-mounted switch detection device, an arm end pulley side-mounted switch detection device and an arm end pulley front-mounted switch detection device; the main hook model radio frequency identification device is used to detect whether the main hook is installed at the arm end and generate a signal A. If the main hook is installed, the signal A is the hook tonnage M. If the main hook is not installed, the signal A is 0; the secondary hook model radio frequency identification device is used to detect whether the secondary hook is installed at the arm end and generate a signal B. If the secondary hook is installed, the signal B is the hook tonnage N. If the secondary hook is not installed, the signal B is 0; the jib side-mounted switch detection device is used to detect whether the jib is installed on the left side of the main arm to generate a signal C. If the jib is installed On the left side of the main arm, the signal C is 1. If the auxiliary arm is not installed on the left side of the main arm, the signal C is 0. The auxiliary arm front-mounted switch detection device is used to detect whether the auxiliary arm is installed in front of the main arm to generate a signal D. If the auxiliary arm is installed in front of the main arm, the signal D is 1. If the auxiliary arm is not installed in front of the main arm, the signal D is 0. The arm-end pulley side-mounted switch detection device is used to detect whether the arm-end pulley is installed on the right side of the main arm to generate a signal E. If the arm-end pulley is installed on the right side of the main arm, the signal E is 1. If the arm-end pulley is not installed on the right side of the main arm, the signal E is 0. The arm-end pulley front-mounted switch detection device is used to detect whether the arm-end pulley is installed on the front side of the main arm to generate a signal F. If the arm-end pulley is installed on the front side of the main arm, the signal F is 1. If the arm-end pulley is not installed on the front side of the main arm, the signal F is 0.

[0021] The control system of this embodiment is capable of self-identifying the arm-end working condition, specifically automatically identifying the crane boom head and jib attachment status, the boom end pulley attachment status, the main hook attachment status, and the auxiliary hook attachment status, thereby automatically matching the arm-end hoisting and installation working condition, thereby preventing the operator from failing to set the hoisting working condition according to the actual arm-end state of the vehicle. In addition, this embodiment is capable of automatically encoding according to the arm-end installation working condition combination: the arm-end working condition combination code is automatically compiled based on the boom head working condition combination table combined with the information from the various arm-end sensors. The working condition combination code is directly transmitted to the torque limiter 15 via the length and angle sensor, resulting in a high degree of automation.

[0022] In a specific embodiment, the main hook model radio frequency identification device includes a main hook model radio frequency detector 9 and a main hook coding information block 8. The main hook model radio frequency detector 9 is installed on the right side vertical plate of the main boom arm head, and the main hook coding information block 8 is installed on the main boom hook. When the system is powered on, the main hook model radio frequency detector 9 is activated and transmits its own signal A to the arm end controller 7. The main hook model radio frequency detector 9 is used to transmit radio frequency waves to the main hook coding information block 8 to identify the coding information M of the main hook coding information block 8. M refers to the hook tonnage. At this time, the content of signal A is M. If the main boom hook is not installed, the content of signal A is 0; The auxiliary hook model radio frequency identification device includes an auxiliary hook model radio frequency detector 12 and an auxiliary hook coding information block 13. The auxiliary hook model radio frequency detector 12 is installed on the right side vertical plate of the auxiliary arm arm head, and the auxiliary hook coding information block 13 is installed on the auxiliary arm hook. When the system is powered on, the auxiliary hook model radio frequency detector 12 is activated and transmits its own signal B to the arm end controller 7. The auxiliary hook model radio frequency detector 12 is used to transmit radio frequency waves to the auxiliary hook coding information block 13 to identify the coding information N of the auxiliary hook coding information block 13. N refers to the hook tonnage. At this time, the content of signal B is N. If no auxiliary hook is installed, the content of signal B is 0. This embodiment automatically identifies the hook information through the hook coding block, and then derives the hook tonnage parameters, and automatically participates in the rated load matching of the torque limiter 15, preventing the operator from inputting the wrong hook information, resulting in an error in the rated load matching of the torque limiter 15.

[0023] The jib side-mounted switch detection device includes a jib side-mounted detection switch 2 and a jib side-mounted detection plate 1. The jib side-mounted detection switch 2 is mounted on the vertical plate on the left side of the main arm, and the jib side-mounted detection plate 1 is mounted on the side of the jib. When the jib is mounted on the left side of the main arm, the jib side-mounted detection plate 1 will face the jib side-mounted detection switch 2, the jib side-mounted detection switch 2 will be triggered, and the signal C will be 1 and transmitted to the arm-end controller 7. When the jib side-mounted detection plate 1 is not facing the jib side-mounted detection switch 2, the jib side-mounted detection switch 2 will not be triggered, and the signal C will be 0 and transmitted to the arm-end controller 7.

[0024] The jib front installation switch detection device includes a jib front installation detection switch 10 and a jib front installation detection plate 11. The jib front installation detection switch 10 is installed on the vertical plate in front of the main arm head, and the jib front installation detection plate 11 is installed on the crossbeam of the jib rotating frame. When the jib is installed in front of the main arm, the jib front installation detection plate 11 will face the jib front installation detection switch 10, and the jib front installation detection switch 10 will be triggered, and the trigger signal 1 will be transmitted to the arm end controller 7. When the jib is not installed in front of the main arm, the jib front installation detection switch 10 will not be triggered, and the switch signal 0 will be transmitted to the arm end controller 7.

[0025] The arm-end pulley side-mounted switch detection device includes an arm-end pulley side-mounted detection switch 3 and an arm-end pulley side-mounted detection plate 4. The arm-end pulley side-mounted detection switch 3 is mounted on the right side vertical plate of the main boom arm head, and the arm-end pulley side-mounted detection plate 4 is mounted on the side of the arm-end pulley. When the arm-end pulley is mounted on the right side of the main boom arm head, the arm-end pulley side-mounted detection plate 4 will face the arm-end pulley side-mounted detection switch 3. The arm-end pulley side-mounted detection switch 3 is triggered, and the signal E is 1 and transmitted to the arm-end controller 7. When the arm-end pulley is not mounted on the right side of the main boom arm head, the arm-end pulley side-mounted detection switch 3 is not triggered, and the signal E is 0 and transmitted to the arm-end controller 7.

[0026] The arm-end pulley front-mounted switch detection device includes an arm-end pulley front-mounted detection switch 6 and an arm-end pulley front-mounted detection plate 5. The arm-end pulley front-mounted detection switch 6 is mounted on the front vertical plate of the main arm head, and the arm-end pulley front-mounted detection plate 5 is mounted on the rear vertical plate of the arm-end pulley. When the arm-end pulley is installed on the front side of the main arm head, the arm-end pulley front-mounted detection plate 5 will face the arm-end pulley front-mounted detection switch 6F, switch F is triggered, and a trigger signal 1 is transmitted to the arm-end controller 7. When the arm-end pulley is not installed on the front side of the main arm head, switch F is not triggered, and a switch signal 0 is transmitted to the arm-end controller 7.

[0027] The arm end working condition combination code is composed of signal A, signal B, signal C, signal D, signal E and signal F. The arm end working condition combination code is transmitted to the torque limiter 15 via CAN.

[0028] The arm end controller 7 installed at the arm head receives the main hook model RF detector signal A, the auxiliary hook model RF detector signal B, the auxiliary arm side installation detection switch signal C, the auxiliary arm front installation detection switch signal D, the arm end pulley side installation detection switch signal E, and the arm end pulley front installation detection switch signal F. The arm end controller 7 matches the arm end working condition combination code according to the following arm head working condition combination table, and sends the arm end working condition combination code to the torque limiter 15 through the winding box 14 in the form of CAN transmission.

[0029] Table 1 Example of boom head working condition combination table

[0030] Note: When the main boom is hoisted, the auxiliary hook is not installed; when the jib is hoisted, the main hook is not installed and the jib is installed in front; when the arm-end pulley is hoisted, the main hook is not installed and the arm-end pulley is installed in front.

[0031] In this embodiment, the second detection assembly includes an angle sensor, a length sensor, and an oil pressure sensor 17. The angle sensor is mounted on the main boom and is used to detect the boom's luffing angle; the length sensor is mounted on the main boom and is used to detect the boom's telescopic length; and the oil pressure sensor 17 is mounted on the valve port of the luffing cylinder and is used to detect the luffing oil pressure. The actual hoisted weight is determined by looking up information from a table based on the main boom's luffing angle, telescopic length, and luffing oil pressure.

[0032] This embodiment realizes automatic detection of the arm end configuration working condition by setting detection devices, length and angle sensors, and torque limiters 15 on the working parts (auxiliary arm, arm end pulley, hook, etc.) and matching corresponding control logic. The torque limiter 15 matches the rated load performance in real time according to the real-time working condition combination information of the arm end, thereby preventing the overload lifting phenomenon caused by the operator's manual selection of working condition information.

[0033] The torque limiter 15 matches the rated lifting weight under the current lifting condition according to the working condition performance matching table. The counterweight combination is the matching combination information R selected by the operator on the display 16 according to the actual counterweight state.

[0034] Table 2 Example of working condition performance matching table

[0035] The torque limiter 15 then compares the current actual lifting weight with the rated lifting weight. If the current actual lifting weight is greater than the rated lifting weight, it is considered overloaded. The torque limiter controls the unloading valve to unload the system, causing the hoist to rise, the luffing to fall, and the boom to extend without any action.

[0036] The actual weight is obtained by matching the main boom length and angle, counterweight information, and luffing oil pressure information collected by the torque limiter 15 with the set lifting performance table. An example is shown below; Table 3 Example of lifting performance table

[0037] This embodiment also receives and displays the arm end combined working condition code information and the rated load hoisting weight information of the current working condition forwarded by the torque limiter 15 through the display 16. Example 2

[0038] This embodiment provides a method for self-identification and control of the arm-end working condition of a wheeled crane, which is based on the arm-end working condition self-identification and control system of the wheeled crane described in Example 1. The method includes: Step S1, obtaining the installation conditions of each workpiece at the arm end of the wheeled crane; Step S2: obtaining the load condition of the arm end of the wheeled crane; Step S3: determining an arm end working condition combination code according to the real-time working conditions of each workpiece detected by the detection component; Step S4: determining the actual lifting weight according to the load working condition, and identifying the rated lifting weight under the current working condition according to the arm end working condition combination code, and triggering the unloading operation when the actual lifting weight exceeds the rated lifting weight.

[0039] In combination with the actual working process, specifically, after the crane is powered on, the arm end controller 7, the jib front installation detection switch 10, the jib side installation detection switch 2, the arm end pulley side installation detection switch 3, the arm end pulley front installation detection switch 6, the main hook model radio frequency detector 9, and the auxiliary hook model radio frequency detector are powered on and work, and the arm end controller 7 receives these sensor signals and matches the arm head working condition combination table to obtain the arm end working condition combination code, and sends the arm end working condition combination code to the torque limiter 15 through the length angle sensor in the form of CAN transmission.

[0040] The length sensor, angle sensor, and oil pressure sensor 17 transmit the currently detected main boom length information, main boom angle information, and boom oil pressure information to the torque limiter 15. The torque limiter 15 matches the rated lifting weight under the current lifting condition based on the arm end working condition combination code, the working condition performance matching table, and the counterweight combination information selected on the display 16. The torque limiter 15 collects the main boom length and angle, counterweight information, and boom oil pressure information, and matches the actual lifting weight based on the lifting performance table. The torque limiter 15 then compares the current actual lifting weight with the rated lifting weight. If the current actual lifting weight is greater than the rated lifting weight, it is considered overloaded, and the torque limit controls the unloading valve to unload the system, causing the hoisting, boom lowering, and boom extension to stop working.

[0041] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Thus, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0042] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowcharts and / or block diagrams, as well as combinations of processes and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowcharts and / or block diagrams. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0043] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0044] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0045] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the purpose of the present invention and the claims, which are all protected by the present invention.

Claims

1. A self-identification control system for arm end working condition of a wheeled crane, characterized in that: include: The first detection component is used to detect the installation conditions of each workpiece at the arm end of the wheeled crane; The second detection component is used to detect the load condition of the arm end of the wheel crane; The arm end controller is used to determine the arm end working condition combination code according to the real-time working conditions of each workpiece detected by the detection component; The torque limiter is configured to determine the actual lifting weight according to the load working condition, and to identify the rated lifting weight under the current working condition according to the arm end working condition combination code, and to trigger an unloading operation when the actual lifting weight exceeds the rated lifting weight.

2. The arm end working condition self-identification control system of the wheeled crane according to claim 1, characterized in that: The first detection component includes: The main hook model radio frequency identification device is used to detect whether the main hook is installed at the arm end and generate a signal A. If the main hook is installed, the signal A is the hook tonnage M. If the main hook is not installed, the signal A is 0; Auxiliary hook model radio frequency identification device, used to detect whether the auxiliary hook is installed at the arm end and generate signal B. If the auxiliary hook is installed, signal B is the hook tonnage N. If the auxiliary hook is not installed, signal B is 0; A jib side-mounted switch detection device is used to detect whether the jib is installed on the left side of the main arm to generate a signal C. If the jib is installed on the left side of the main arm, the signal C is 1; if the jib is not installed on the left side of the main arm, the signal C is 0; A jib front-mounted switch detection device is used to detect whether the jib is installed in front of the main arm to generate a signal D. If the jib is installed in front of the main arm, the signal D is 1; if the jib is not installed in front of the main arm, the signal D is 0; The arm end pulley side-mounted switch detection device is used to detect whether the arm end pulley is installed on the right side of the main arm to generate a signal E. If the arm end pulley is installed on the right side of the main arm, the signal E is 1; if the arm end pulley is not installed on the right side of the main arm, the signal E is 0; The arm-end pulley front-mounted switch detection device is used to detect whether the arm-end pulley is installed on the front side of the main arm to generate a signal F. If the arm-end pulley is installed on the front side of the main arm, the signal F is 1; if the arm-end pulley is not installed on the front side of the main arm, the signal F is 0.

3. The arm end working condition self-identification control system of the wheeled crane according to claim 2, characterized in that: The arm end working condition combination code is composed of signal A, signal B, signal C, signal D, signal E and signal F, and the rated lifting weight is determined by looking up the arm end working condition combination code in a table.

4. The arm end working condition self-identification control system of a wheeled crane according to claim 1, characterized in that: The arm end working condition combination code is transmitted to the torque limiter via CAN.

5. The arm end working condition self-identification control system of a wheeled crane according to claim 1, characterized in that: The second detection component includes: An angle sensor is provided on the main arm and is used to detect the luffing angle of the main arm; A length sensor is provided on the main arm and is used to detect the telescopic length of the main arm; The oil pressure sensor is installed on the valve port of the luffing cylinder and is used to detect the luffing oil pressure information.

6. The arm end working condition self-identification control system of the wheeled crane according to claim 5, characterized in that: The actual lifting weight is determined by looking up information of the main arm luffing angle, main arm telescopic length and luffing oil pressure.

7. The arm end working condition self-identification control system of a wheeled crane according to claim 2, characterized in that: The main hook model radio frequency identification device includes a main hook model radio frequency detector and a main hook coding information block. The main hook model radio frequency detector is installed on the right vertical plate of the main boom arm head, and the main hook coding information block is installed on the main boom hook. The main hook model radio frequency detector is used to transmit radio frequency waves to the main hook coding information block to identify the coding information M of the main hook coding information block, where M refers to the hook tonnage. At this time, the content of signal A is M. If the main boom hook is not installed, the content of signal A is 0; The auxiliary hook model radio frequency identification device includes an auxiliary hook model radio frequency detector and an auxiliary hook coding information block. The auxiliary hook model radio frequency detector is installed on the right side vertical plate of the auxiliary arm arm head, and the auxiliary hook coding information block is installed on the auxiliary arm hook. The auxiliary hook model radio frequency detector is used to transmit radio frequency waves to the auxiliary hook coding information block to identify the coding information N of the auxiliary hook coding information block, where N refers to the hook tonnage. At this time, the content of signal B is N. If no auxiliary hook is installed, the content of signal B is 0.

8. The arm end working condition self-identification control system of a wheeled crane according to claim 2, characterized in that: The jib side installation switch detection device includes a jib side installation detection switch and a jib side installation detection plate. The jib side installation detection switch is installed on the vertical plate on the left side of the main arm, and the jib side installation detection plate is installed on the side of the jib. When the jib is installed on the left side of the main arm, the jib side installation detection switch is triggered and the signal C is 1; otherwise, the jib side installation detection switch is not triggered and the signal C is 0; The jib front installation switch detection device includes a jib front installation detection switch and a jib front installation detection plate. The jib front installation detection switch is installed on the vertical plate in front of the main arm head, and the jib front installation detection plate is installed on the crossbeam of the jib rotating frame. When the jib is installed in front of the main arm, the jib front installation detection switch is triggered and the signal D is 1. Otherwise, the jib front installation detection switch is not triggered and the signal D is 0.

9. The arm end working condition self-identification control system of a wheeled crane according to claim 2, characterized in that: The arm-end pulley side-mounted switch detection device includes an arm-end pulley side-mounted detection switch and an arm-end pulley side-mounted detection plate. The arm-end pulley side-mounted detection switch is mounted on the right vertical plate of the main arm head, and the arm-end pulley side-mounted detection plate is mounted on the side of the arm-end pulley. When the arm-end pulley is mounted on the right side of the main arm head, the arm-end pulley side-mounted detection switch is triggered and the signal E is 1. Otherwise, the arm-end pulley side-mounted detection switch is not triggered and the signal E is 0. The arm-end pulley front-mounted switch detection device includes an arm-end pulley front-mounted detection switch and an arm-end pulley front-mounted detection plate. The arm-end pulley front-mounted detection switch is installed on the front vertical plate of the main arm arm head, and the arm-end pulley front-mounted detection plate is installed on the rear vertical plate of the arm-end pulley. When the arm-end pulley is installed on the front side of the main arm arm head, the arm-end pulley front-mounted detection switch is triggered and the signal F is 1. Otherwise, the arm-end pulley front-mounted detection switch is not triggered and the signal F is 0.

10. A method for self-identification and control of arm end working conditions of a wheeled crane, characterized in that: Based on the arm end working condition self-identification control system of the wheeled crane according to any one of claims 1 to 9, the method includes: Obtain the installation conditions of each workpiece at the arm end of the wheeled crane; Obtain the load condition of the arm end of the wheel crane; Determine the arm end working condition combination code according to the real-time working condition of each workpiece detected by the detection component; The actual lifting weight is determined according to the load working condition, and the rated lifting weight under the current working condition is identified according to the arm end working condition combination code, and an unloading operation is triggered when the actual lifting weight exceeds the rated lifting weight.

Images