Logical weighing auxiliary instrument for fastener

Abstract

The invention discloses a fastener logic weighing auxiliary instrument which comprises a base, indicator light assemblies and a controller, wherein the indicator light assemblies are arranged on the base, the number of the indicator light assemblies is the same as that of bolts of a fastener to be weighed, and the positions of the indicator light assemblies are in one-to-one correspondence. The indicating lamp assembly is used for outputting a lamp signal and triggering a feedback signal. The controller is configured to supply power to the indicating lamp assemblies in the current sequence according to a preset logic sequence and monitor feedback signals of the indicating lamp assemblies in the current sequence; after the feedback signal of the indicating lamp assembly in the current sequence is received, updating the current sequence according to the following sequence, switching to supply power to the updated indicating lamp assembly in the current sequence, and monitoring the feedback signal of the updated indicating lamp assembly in the current sequence until the feedback signal of the indicating lamp assembly in the last sequence is received; wherein the initial current sequence is a first sequence in the logic sequence. According to the scheme of the invention, weighing guidance assistance can be automatically output, wrong weighing and weighing leakage are avoided, and the accuracy and reliability of a weighing working process are improved.

Description

Technical Field

[0001] The present invention relates to the field of aviation safety technology, in particular to a fastener logic tightening auxiliary instrument. Background Art

[0002] When repairing engine turbine blades, according to the maintenance manual, the fan blade retaining plate tightening logic must be based on the No. 1 bolt of the retaining plate. The hole position must be counted on the logic diagram, and then the actual hole position must be counted on the actual object to complete the tightening of one bolt. 36 fixing bolts require 72 searches. If tightening is required twice as required by the manual, 144 searches are required to complete the task. The retaining plate consists of 36 fixing bolts distributed circumferentially and equidistantly, and each bolt has the same model. There are no positioning marks on the retaining plate, making it very difficult to find. In addition, the irregular distribution of the bolts makes it very easy for workers to make mistakes, resulting in serious problems such as wrong weighing and missing weighing, which poses a safety hazard for subsequent maintenance and operation. Summary of the Invention

[0003] In order to solve the above problems, the present invention proposes a fastener logic tightening assistant, which can automatically output tightening guidance assistance, avoid wrong weighing and missed weighing, and improve the accuracy and reliability of the tightening workflow.

[0004] The present invention provides a fastener logic pounding auxiliary instrument, comprising: a base, an indicator light assembly arranged on the base, the number of which is the same as the number of bolts of the fasteners to be pounded and the positions of which are corresponding one to one, and a controller;

[0005] The indicator light component is used to output a light signal and trigger a feedback signal;

[0006] The controller is configured to:

[0007] Supply power to the indicator light components in the current sequence according to a preset logical sequence, and monitor the feedback signals of the indicator light components in the current sequence;

[0008] After receiving the feedback signal from the indicator light assembly in the current order, the current order is updated with the next order, power is switched to the indicator light assembly in the updated current order, and the feedback signal from the indicator light assembly in the updated current order is monitored until the feedback signal from the indicator light assembly in the last order is received;

[0009] The initial current order is the first order in the logical order.

[0010] Preferably, each indicator light assembly is also used to trigger a reset signal;

[0011] The controller is further configured to:

[0012] After powering the indicator light components in the current sequence, the feedback signals of all indicator light components are monitored;

[0013] After receiving feedback signals from indicator light components in other sequences, marking the incorrectly triggered indicator light components and monitoring the reset signals of the incorrectly triggered indicator light components;

[0014] After receiving the reset signal of the falsely triggered indicator light assembly, the feedback signal of the indicator light assembly in the current sequence is continuously monitored.

[0015] Preferably, the controller is further configured to:

[0016] After powering the indicator light components in the current sequence, the feedback signals of all indicator light components are monitored;

[0017] When feedback signals from indicator light components of other sequences are received and feedback signals from indicator light components of the current sequence are received, the current sequence is updated with the previous sequence, power is switched to the updated indicator light components of the current sequence, and the feedback signals from the updated indicator light components of the current sequence are monitored.

[0018] Preferably, each indicator light assembly includes an indicator light and a control switch;

[0019] The controller supplies power to the control switch of the corresponding indicator light assembly and the power supply circuit composed of the indicator light through each power supply output terminal;

[0020] Each signal detection terminal of the controller detects the on / off state of the corresponding power supply circuit, and triggers the corresponding feedback signal and reset signal in sequence when the on / off state switches.

[0021] Preferably, each control switch is a single-pole double-throw switch;

[0022] The movable end and the first fixed end of each single-pole double-throw switch are connected to the power supply circuit of each indicator light assembly, and the second fixed end of each single-pole double-throw switch is connected to the signal detection end corresponding to the controller.

[0023] Preferably, a preset control loop is further provided between the controller and each indicator light;

[0024] The controller is further configured to:

[0025] Before supplying power to the indicator light components in the current sequence according to the preset logical sequence, monitoring the on / off status of the power supply circuits of all indicator light components;

[0026] Controlling the operation of the indicator light in the disconnected state of the power supply circuit with a preset first control parameter, and monitoring the on-off state of the power supply circuit of the indicator light assembly;

[0027] The indicator light in the on-state of the power supply circuit is controlled to operate according to the preset second control parameter.

[0028] Preferably, the controller is further configured to:

[0029] After receiving the feedback signal from the last indicator light assembly, monitor the on / off status of the power supply circuits of all indicator light assemblies;

[0030] When there is an indicator light component whose power supply circuit is in the on state, an erroneous alarm signal is output.

[0031] Preferably, the controller is further configured to:

[0032] When there is no indicator light component whose power supply circuit is in the on state, a normal prompt signal is output and the control switch is reset to the initial state.

[0033] Preferably, each control switch is a single-pole single-throw switch;

[0034] Each indicator light assembly also includes a voltage / current sensor set in the power supply circuit;

[0035] Each signal detection terminal of the controller is connected to the signal output terminal of the corresponding voltage / current sensor.

[0036] Preferably, each control switch is a single-pole single-throw switch;

[0037] Each indicator light assembly also includes a position sensor for detecting a switch position of the single-pole single-throw switch;

[0038] Each signal detection terminal of the controller is connected to the signal output terminal of the corresponding position sensor

[0039] The present invention provides a fastener logic tightening auxiliary instrument, comprising: a base, an indicator light assembly arranged on the base with the same number and position as the bolts of the fasteners to be tightened, and a controller; the indicator light assembly is used to output a light signal and trigger a feedback signal; the controller is configured to: supply power to the indicator light assembly of the current sequence according to a preset logical sequence, and monitor the feedback signal of the indicator light assembly of the current sequence; after receiving the feedback signal of the indicator light assembly of the current sequence, update the current sequence with the next sequence, switch to supply power to the indicator light assembly of the updated current sequence, and monitor the feedback signal of the indicator light assembly of the updated current sequence until the feedback signal of the indicator light assembly of the last sequence is received; wherein the initial current sequence is the first sequence in the said logical sequence. The present application scheme can automatically output tightening guidance assistance, avoid wrong weighing and missing weighing, and improve the accuracy and reliability of the tightening workflow. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1This is a structural diagram of a fastener logic tightening auxiliary instrument provided by an embodiment of the present invention;

[0041] Figure 2 This is another structural diagram of the fastener logic tightening auxiliary instrument provided by an embodiment of the present invention;

[0042] Figure 3 This is another structural diagram of the fastener logic tightening auxiliary instrument provided by the embodiment of the present invention.

[0043] Figure 4 Schematic diagram showing a comparison of working hours before and after using the auxiliary instrument provided by an embodiment of the present invention;

[0044] Figure 5 It is a schematic diagram comparing the number of wrong weighings and missed weighings before and after using the auxiliary instrument provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0046] The embodiment of the present invention provides a fastener logic tightening auxiliary instrument, comprising: a base, an indicator light assembly provided on the base, the number of which is the same as the number of bolts of the fasteners to be tightened and the positions of which correspond one to one, and a controller;

[0047] The controller is configured to:

[0048] Supply power to the indicator light components in the current sequence according to a preset logical sequence, and monitor the feedback signals of the indicator light components in the current sequence;

[0049] After receiving the feedback signal from the indicator light assembly in the current order, the current order is updated with the next order, power is switched to the indicator light assembly in the updated current order, and the feedback signal from the indicator light assembly in the updated current order is monitored until the feedback signal from the indicator light assembly in the last order is received;

[0050] Among them, the initial current order is the first order.

[0051] When implementing this embodiment, see Figure 1 , is a schematic structural diagram of a fastener logic tightening auxiliary instrument provided by an embodiment of the present invention, comprising:

[0052] The base is used to install the fasteners to be tightened. It is usually designed as a flat plate with a certain shape and size, which generally matches the shape of the fastener to be tightened. It has mounting holes or positioning slots with the same number and corresponding positions as the bolts of the fasteners to be tightened to ensure accurate placement of the fasteners.

[0053] The indicator light components are arranged on the base, and the number and position of the indicator light components correspond one-to-one to the bolts of the fasteners to be pounded; each indicator light component may include an LED lamp, a bulb or other type of light-emitting element for intuitively displaying different states or information.

[0054] The controller also includes a power conversion module, which provides power to the indicator light components. It also features a switching function, accurately directing power to the indicator light components in the specified sequence according to control instructions. The power conversion module's design must consider the voltage and current requirements of the indicator light components to ensure stable power supply.

[0055] The controller also includes a monitoring circuit, which is composed of various sensors (such as photoelectric sensors and current sensors) and signal processing circuits. For example, the photoelectric sensor can detect whether the indicator light is properly illuminated, while the current sensor can monitor the current flow when the indicator light is operating. These sensors obtain information about the operating status of the indicator light assembly and convert it into an electrical signal that can be recognized by the control unit.

[0056] In practical applications, the logical order of the indicator light components is predetermined. Specifically, the order of the indicator light components is determined based on the fasteners to be pounded. Each indicator light component is arranged in a specific logical order, and the initial current order is set to the first order in the logical order (assuming it is indicator light component 1). At this point, power is supplied to the indicator light component 1 in the first order, causing the corresponding indicator light 1 to illuminate and activating a monitoring mechanism for the feedback signal from that indicator light component 1. This monitoring mechanism can be implemented using various sensors or circuits to detect whether the indicator light components are operating normally and achieving the expected state.

[0057] It should be noted that the feedback signal can be generated in a variety of ways, including operator-initiated generation. This includes: when the operator completes tightening and actively triggers the generation of a feedback signal, the controller's signal detection terminal receives the signal, indicating that the current bolt has been tightened. Alternatively, a trigger mechanism may be configured such that when the bolt corresponding to the indicator assembly is tightened to a preset target position, the sensor detects this change and automatically triggers the feedback signal.

[0058] After successfully receiving the feedback signal from the current sequence (i.e., indicator light component 1), the current sequence is updated to the next sequence (assuming indicator light component 2). This may involve some control logic, such as updating the value of a variable representing the current sequence in the program. Then, the power supply is switched. At this time, the indicator light enables indicator light component 2 to receive power, and the corresponding indicator light 2 is illuminated. At the same time, the feedback signal from indicator light component 2 continues to be monitored. The monitoring method is similar to that of monitoring indicator light component A, using corresponding sensors or circuits to obtain its operating status information in real time.

[0059] Repeat the above steps, that is, each time a feedback signal is received from the indicator light component in the current sequence, the current sequence is updated to the next sequence, power is switched, and feedback signals from the indicator light components in the new sequence are monitored. For example, after receiving feedback from indicator light component 2, the current sequence is updated to indicator light component 3, power is supplied to indicator light component 3, and its feedback signal is monitored.

[0060] The above process continues until the feedback signal from the last indicator light assembly in the sequence is received. For example, assuming there are 32 indicator light assemblies, the auxiliary process is complete when the feedback signal from indicator light assembly 32 is received. The entire process of powering and monitoring the indicator light assemblies according to the preset logical sequence is complete.

[0061] In another embodiment provided by the present invention, each indicator light assembly includes an indicator light and a control switch;

[0062] The controller includes interface pairs corresponding to the number of indicator light components, and each interface pair includes a power supply output terminal and a signal detection terminal;

[0063] Each power supply output terminal of the controller and the control switch of the corresponding indicator light assembly and the indicator light form a power supply circuit, and the control switch is used to control the on / off state of the power supply circuit;

[0064] Each signal detection terminal of the controller receives a detection signal of the on / off state of the corresponding power supply circuit;

[0065] The control switch of the indicator light assembly remains in the connected state in the initial state;

[0066] The controller outputs the power supply signal to the power supply output end corresponding to the indicator light component of the current sequence in a preset logical order, and after receiving the detection signal from the signal detection end corresponding to the indicator light component of the current sequence, switches the power supply signal to the power supply output end corresponding to the indicator light component of the next sequence until the detection signal from the signal detection end corresponding to the indicator light component of the last sequence is received.

[0067] The auxiliary instrument provided in this application can output process sequence instructions in a preset logical order in this way, ensuring that each bolt is tightened in sequence according to the preset logical order, avoiding omissions or erroneous operations, and improving the accuracy and efficiency of the tightening work.

[0068] In another embodiment provided by the present invention, the indicator light assembly is further used to trigger a reset signal;

[0069] The controller is further configured to:

[0070] After powering the indicator light components in the current sequence, the feedback signals of all indicator light components are monitored;

[0071] After receiving feedback signals from indicator light components in other sequences, marking the incorrectly triggered indicator light components and monitoring the reset signals of the incorrectly triggered indicator light components;

[0072] After receiving the reset signal of the falsely triggered indicator light assembly, the feedback signal of the indicator light assembly in the current sequence is continuously monitored.

[0073] Specifically, when designing indicator light components, each indicator light component, in addition to including an indicator light and a feedback device for triggering a feedback signal, also requires an additional reset trigger device. This reset trigger device can be a separate button or a single-pole single-throw switch, which triggers the reset signal through a specific operation (such as long-pressing the switch).

[0074] For example, the position status of the single-pole single-throw switch is continuously monitored by a position sensor, and the signal is transmitted to the controller. When the switch is in different positions, a reset signal and a feedback signal are triggered accordingly. The reset trigger device is connected to the corresponding interface of the controller. When the operation is triggered, a feedback signal and a reset signal can be sent to the controller.

[0075] The controller must have a signal processing and logic judgment module to process the feedback and reset signals from the indicator components. A storage module is required to identify falsely triggered indicator components. Registers or memory cells can be used to store the identification information of falsely triggered components. The signal monitoring module must monitor the feedback and reset signals of all indicator components in real time.

[0076] When the solution is implemented, the controller supplies power to the indicator light components in the current sequence according to the preset logical sequence, so that the corresponding indicator lights light up.

[0077] Start the signal monitoring program and continuously monitor the feedback signals of all indicator light components. The program will continuously poll the output signal of the position sensor of each indicator light component to determine whether there is a feedback signal.

[0078] When the controller receives feedback signals from indicator light components in other sequences, the false triggering processing program is immediately started.

[0079] Marking the indicator light component as a mis-triggered component in the storage module, recording its identification information, and monitoring a reset signal of the mis-triggered indicator light component;

[0080] At this point, the tightening logic is out of sequence. This means the operator may have accidentally tightened bolts in a different sequence, triggering the corresponding feedback signal; or simply triggered the feedback signal of another indicator light component. In this case, the indicator light component sequence logic is disrupted, and the operator needs to be prompted to reset. At this time, the power supply to the next indicator light in the sequence will not be triggered, reminding the user that this operation is abnormal and needs to be reset.

[0081] When the controller receives the reset signal of the mistakenly triggered indicator light component, it indicates that the user has completed the corresponding reset operation and triggered the corresponding reset signal, and then the mistaken triggering mark of the indicator light component in the storage module is cleared.

[0082] Resume normal feedback signal monitoring of all indicator light components, continue to focus on the indicator light components in the current sequence, and wait for the feedback signal sent after the operation is completed.

[0083] The operator completes the tightening of the bolts corresponding to the sequence, causing the first indicator light assembly to send a feedback signal.

[0084] When the controller receives the feedback signal from the current sequence indicator light component, it stops supplying power to the component.

[0085] According to the preset logical sequence, switch to the next indicator light component for power supply, and repeat the above power supply and monitoring, false triggering processing, reset processing and other processes until all indicator light components have completed the operation.

[0086] Operators inevitably make mistakes in complex working environments. This solution allows for a certain degree of misoperation without disrupting or disrupting the entire tightening process. By identifying, monitoring, and resetting mistriggered indicator light components, the system ensures that even in the event of unexpected operation, it can continue to proceed in an orderly manner according to the preset logic, significantly reducing the probability of re-operation due to human error.

[0087] In another embodiment provided by the present invention, the controller is further configured to:

[0088] After powering the indicator light components in the current sequence, the feedback signals of all indicator light components are monitored;

[0089] When feedback signals from indicator light components of other sequences are received and feedback signals from indicator light components of the current sequence are received, the current sequence is updated with the previous sequence, power is switched to the updated indicator light components of the current sequence, and the feedback signals from the updated indicator light components of the current sequence are monitored.

[0090] Specifically, the controller is powered on and initialized in advance, including determining a preset logical sequence, which is the initial order in which the indicator light components are powered. For example, for a system with 32 indicator light components, the preset sequence may be 1-2-3-4-5-6-...-32.

[0091] It should be noted that the parameters of the power supply signal of the indicator light component (such as voltage and current), the threshold value of signal detection, etc. can also be initialized and configured.

[0092] All indicator light components are in their initial state.

[0093] The controller supplies power to the indicator light assembly in the current sequence (assuming it is the first one) in accordance with the preset logical sequence, and the corresponding indicator light lights up, prompting the operator to tighten the corresponding bolt.

[0094] The operator tightens the first bolt, and upon completion, a feedback signal is triggered and sent to the signal detection end of the controller.

[0095] After the controller receives the feedback signal from the current sequence (first) indicator light assembly, it stops supplying power to the interface pair and switches to supplying power to the indicator light assembly of the next sequence according to the preset sequence. The second indicator light lights up to guide the operator to tighten the next bolt.

[0096] Assume that the controller receives the feedback signal from the third indicator light component before it should receive the feedback signal from the second indicator light component, which means that the sequence is out of order. This means that the operator may have accidentally tightened the bolts in a different sequence and triggered the corresponding feedback signal; or simply triggered the feedback signal of another indicator light component. In this case, the logic of the indicator light component sequence is disrupted and the operator needs to be reminded to reset. At this time, the power supply of the next indicator light in the sequence will not be triggered to remind the user that this operation is abnormal and needs to be reset. And monitor the feedback signals of all indicator light components;

[0097] At this time, the operator should perform a reset check. When the operator is unable to complete the reset or fails to notice the abnormal situation, the operator continues to perform the original tightening process or triggers the feedback signal of the tightening completion. At this time, after receiving the feedback signal of the indicator light component of the other sequence, the controller receives the feedback signal of the indicator light component of the current sequence.

[0098] The controller will update the current order to the previous order, which is the first order.

[0099] When the worker completes the tightening of a bolt, he needs to manually press the button to review the completion of the tightening work and trigger the feedback signal. When the worker operates correctly, the indicator light of the next bolt that needs to be tightened will be automatically output. If the worker makes an error at this time, the bolt indicator light here will remain on (that is, the power supply of the next sequence indicator light is not triggered), and the next bolt that needs to be tightened will not light up.

[0100] If the worker does not reset and presses the wrong control switch at this time and continues to trigger the feedback signal of the current sequence, the tightening instrument will light up the indicator light of the last bolt that has been tightened and repeat the last tightening work, eliminating the situation of missing or wrong tightening in this work.

[0101] In another embodiment provided by the present invention, each indicator light assembly includes an indicator light and a control switch;

[0102] The controller supplies power to the control switch of the corresponding indicator light assembly and the power supply circuit composed of the indicator light through each power supply output terminal;

[0103] Each signal detection terminal of the controller detects the on / off state of the corresponding power supply circuit, and triggers the corresponding feedback signal and reset signal in sequence when the on / off state switches.

[0104] Specifically, see Figure 2 , is another structural schematic diagram of the fastener logic tightening auxiliary instrument provided in an embodiment of the present invention.

[0105] Each indicator assembly includes an indicator light and a control switch. Light-emitting diodes (LEDs) can be used for the indicator lights, offering advantages such as high luminous efficiency, long life, and fast response. The control switch, which can be a miniature toggle switch or pushbutton switch, is installed near the indicator light to facilitate operator access when tightening the bolts. Multiple indicator light assemblies are fixed to the base in a specific arrangement, corresponding to the bolt positions of the fasteners.

[0106] The controller contains a corresponding number of interface pairs, each consisting of a power output terminal and a signal detection terminal. The controller can be implemented as a microcontroller (MCU) or programmable logic controller (PLC). An MCU or PLC has multiple input and output ports that can be programmed to control output signals and read input signals. The controller also includes a power supply module, which provides a stable power supply for the entire instrument, as well as the necessary circuit connections and control chips to implement logic control functions.

[0107] It should be noted that the figure only shows the internal principles of two indicator light components. The principles and working processes of other indicator light components are similar and will not be described in detail here.

[0108] Each power output terminal of the controller is connected to one end of the corresponding indicator light assembly's control switch via a wire. The other end of the control switch is connected to one end of the indicator light, and the other end of the indicator light is grounded, thus forming a power supply circuit. When the control switch is closed, current flows from the controller's power output terminal, passes through the control switch and indicator light, and then returns to the negative terminal of the power supply, completing the circuit and illuminating the indicator light.

[0109] Each signal detection terminal of the controller receives a detection signal of the on / off state of the corresponding power supply circuit, and triggers the corresponding feedback signal and reset signal in sequence when the on / off state switches.

[0110] It should be noted that when detecting the on / off state, a variety of methods can be adopted, including potential detection, current detection, etc. As well as LED light detection, control switch position detection, etc. Detection can be achieved through corresponding means. For example, the signal detection end of the controller is connected to the connection point between the control switch and the indicator light in the power supply circuit. When the control switch is closed, the power supply circuit is turned on, and the signal detection end receives a high-level signal; when the control switch is turned off, the power supply circuit is cut off, and the signal detection end receives a low-level signal. By detecting changes in the level, the controller can determine the on / off state of the power supply circuit.

[0111] The controller outputs power signals to the power output terminals corresponding to the indicator light components in the current sequence according to a preset logical sequence. Starting with the first interface pair, a high-level signal is output to illuminate the corresponding indicator light, prompting the operator to tighten the corresponding bolt. When the operator completes tightening and turns off the control switch, the controller's signal detection terminal receives a signal indicating that the current bolt has been tightened. Based on this signal, the controller switches the power signal to the power output terminal corresponding to the next indicator light component in the sequence according to a preset procedure, illuminating the next indicator light and continuing to read the signal from the detection signal terminal of the next interface pair in the sequence.

[0112] It should be noted that, when this case is implemented, the controller may specifically be a single chip microcomputer controller, which includes several groups of interface pairs, each interface pair including a power supply output terminal out and a signal detection terminal in.

[0113] When using the Fastener Logic Tightening Assist, place the base of the instrument on the fastener to be tightened, ensuring that the bolt positions correspond to the indicator light components on the base. At this point, the control switches of all indicator light components are in the initial connection state.

[0114] The auxiliary instrument is designed in proportion to the bolts that need to be tightened, so that the indicator light is consistent with the position of the bolt that needs to be tightened. In actual work, since the bolts are evenly distributed around the circumference and have consistent specifications, the worker can select any bolt as position 1 when working, and then only need to tighten the corresponding bolt position according to the instructions of the indicator light, without having to compare with the icons in the manual.

[0115] Each power output terminal of the controller forms a power circuit with the corresponding indicator light assembly's control switch and indicator light. Because the control switches are initially connected, if an external power source is mistakenly connected before the controller starts operating, some indicators may illuminate. Therefore, in actual use, ensure that all preparatory work is completed before connecting the controller's main power supply.

[0116] When the controller is turned on, it begins operating according to a pre-set logical sequence, first outputting a power signal to the power output terminal in the currently ordered (usually the first) interface pair. For example, if there is a fastener with 32 bolts, corresponding to 32 indicator light assemblies, numbered 1-32, the controller will first output a power signal to the power output terminal in interface pair 1.

[0117] At this point, the indicator light on the indicator assembly corresponding to interface pair 1 illuminates. The operator tightens the first bolt with a tightening tool. When the tightening is appropriate, the operator manually turns off the control switch for the indicator assembly. When the control switch is turned off, the current power supply circuit is disconnected, and the controller's signal detection terminal (corresponding to the signal detection terminal in interface pair 1) receives a detection signal indicating a change in the power supply circuit's on / off state, indicating a change from connected to disconnected.

[0118] After receiving the detection signal from the signal detection end of the current sequence (interface pair 1), the controller immediately switches the working state and outputs the power supply signal to the power supply output end of the interface pair of the next sequence (interface pair 2). At this time, the indicator light of the indicator light assembly corresponding to interface pair 2 lights up, and the operator tightens the second bolt in the same way. After completion, the control switch of the indicator light assembly is manually disconnected, and the signal detection end of the controller (corresponding to the signal detection end in interface pair 2) receives the detection signal again. Repeat the operation until completion: According to the above steps, and so on, the controller continuously switches the power supply output end, and the operator tightens the bolts one by one and manually disconnects the control switch until the controller receives the detection signal from the signal detection end of the interface pair of the last sequence (such as interface pair 32). At this time, all bolts have completed the tightening operation, and the tightening work of the entire fastener is completed.

[0119] In another embodiment provided by the present invention, each control switch is a single-pole double-throw switch;

[0120] The movable end and the first fixed end of each single-pole double-throw switch are connected to the power supply circuit of each indicator light assembly, and the second fixed end of each single-pole double-throw switch is connected to the signal detection end corresponding to the controller.

[0121] In the specific implementation of this embodiment, each control switch is a single-pole double-throw switch, see Figure 3 , is another structural diagram of the fastener logic tightening auxiliary instrument provided by an embodiment of the present invention.

[0122] Each control switch is a single-pole double-throw switch, such as the first single-pole double-throw switch KS1 and the second single-pole double-throw switch KS2 shown in the figure.

[0123] Among them, the first single-pole double-throw switch KS1 has a movable terminal B3, a first fixed terminal B2 and a second fixed terminal B1.

[0124] The second single-pole double-throw switch KS2 has a movable terminal A3, a first fixed terminal A2 and a second fixed terminal B1.

[0125] The movable end and the first fixed end of each single-pole double-throw switch are connected to the power supply circuit of each indicator light assembly, and the second fixed end of each single-pole double-throw switch is connected to the signal detection end corresponding to the controller.

[0126] The input and feedback of the indicator light are controlled by a single-pole double-throw switch, and the corresponding indicator lights of the bolts that need to be tightened are lit in sequence according to the tightening sequence required by the aircraft maintenance manual.

[0127] For example, when the auxiliary tightening instrument is powered on, the KS1 control switch is initially in the position connecting the B3 and B2 circuits, turning on the L1 indicator light, prompting the worker to tighten bolt No. 1. After tightening bolt No. 1, the worker confirms the tightening by pressing the confirmation switch KS1. KS1 disengages from the B2 position and connects the B3 and B1 circuits, turning off the L1 indicator light and activating the feedback circuit signal to the controller. The controller then outputs a signal to the KS2 control switch, connecting the A3 and A2 circuits, illuminating the indicator light L2, and notifying the worker of the logical position for the next tightening bolt. This continues in this manner, tightening the remaining 34 bolts in the order indicated by the indicator lights in the circuit diagram.

[0128] Specifically, taking into account the actual working environment and workers' habits, as well as factors such as preventing movement and price, the rocker arm double-control switch is given priority when selecting the control switch.

[0129] The solution proposed in this application uses a single-chip microcomputer as the core of the control system. It can precisely control the lighting sequence and status of LED indicators according to the tightening logic sequence specified in the manufacturer's manual, ensuring that each step of the operation meets regulatory requirements. The single-chip microcomputer can automatically determine and indicate the next bolt position to tighten, reducing the possibility of human judgment errors and improving work efficiency.

[0130] exist Figure 3 In the example, the indicator lights selected are LEDs, including L1 and L2.

[0131] In the specific application, in order to highlight the visual enhancement effect, LED light-emitting diodes with a voltage of 5 to 12 V were used. Considering the ease of maintenance and voltage reliability, a 9V battery pack was preferred.

[0132] High-brightness LED indicators are used for work environments with low lighting. These LED indicators clearly indicate bolt location, number, and tightening status even in low-light conditions. This display technology improves visibility and comfort for workers in dim light.

[0133] In another embodiment provided by the present invention, a preset control loop is further provided between the controller and each indicator light;

[0134] The controller is further configured to:

[0135] Before supplying power to the indicator light components in the current sequence according to the preset logical sequence, monitoring the on / off status of the power supply circuits of all indicator light components;

[0136] Controlling the operation of the indicator light assembly in a disconnected power supply circuit with a preset second control parameter, and monitoring the on / off state of the power supply circuit of the indicator light assembly;

[0137] The indicator light assembly in which the power supply circuit is in the on state is controlled to operate using a preset first control parameter.

[0138] Specifically, the controller serves as the core control unit of the entire fastener logic tightening auxiliary instrument and is responsible for coordinating the working status of each indicator light component to ensure that the tightening operation of the fastener is carried out in an orderly manner according to the preset logic.

[0139] Before starting each tightening step, check the initial status of all indicator light component power supply circuits.

[0140] For indicator light components with disconnected power supply circuits, the preset first control parameter is used for intervention. This is because these components are in an abnormal state (not the initially set connected state), which may be caused by previous operating errors, hardware failures or other reasons, and require operator attention and reset adjustments;

[0141] As for the indicator light components corresponding to the normally connected power supply circuits, they are controlled by the conventional preset second control parameters to maintain their normal indication and feedback functions, ensuring that the entire system advances in an orderly manner from the initial state to each tightening step.

[0142] When the plan is implemented,

[0143] After the controller is turned on, it completes its own initialization settings and loads the preset logic sequence, first control parameters, second control parameters and other information.

[0144] Before powering the indicator light assembly in the current sequence (e.g., the first one), the controller rapidly polls and monitors the on / off status of the power supply circuits of all indicator light assemblies through the signal detection terminals connected to the power supply circuits of each indicator light assembly. The monitoring results are recorded and compared with the preset initial state for analysis.

[0145] The controller identifies indicator light components whose power supply circuits are disconnected and outputs control signals to these components based on preset first control parameters. The first control parameters may include different light colors, flashing frequencies, etc., to remind the user to reset the power supply circuit, i.e., to turn on the control switch.

[0146] The on / off status of the power supply circuits of these abnormal components is continuously monitored to determine whether normal connectivity has been restored. Once restored, the circuits are brought under normal control and controlled according to the second control parameter.

[0147] For indicator light components whose power supply circuit is in the on state, the controller controls them with a preset second control parameter, usually a stable power supply voltage and current, so that the indicator light lights up normally, prompting the operator that the circuit here is normal.

[0148] For example, the indicator lights at each position can emit red and green lights. After powering on, the reliability of the lights and circuits will be automatically detected to confirm that all control switches are in their initial positions.

[0149] If a short circuit occurs at this time, the indicator light at that position will go out;

[0150] If the initial position of the switch does not match the requirements of the built-in program, a feedback signal is triggered to the controller, and the built-in logic controller outputs the first control parameter for control, such as using a flashing red indicator light to remind that the switch is not in the initial position and needs to be manually reset. After the reset is completed, the corresponding indicator is controlled by the first control parameter light, such as using a continuous green indicator light.

[0151] By pre-monitoring the status of all power supply circuits, potential hardware connection issues, component failures, or anomalies caused by human error, such as indicator light components not connecting properly, can be promptly identified. Targeted measures can be taken to repair or circumvent issues at an early stage, preventing them from accumulating and amplifying during subsequent tightening operations. This ensures the smooth completion of the entire tightening operation and reduces the risk of interruptions due to equipment failure.

[0152] In another embodiment of the present invention, the controller is further configured to:

[0153] After receiving the feedback signal from the last indicator light assembly, monitor the on / off status of the power supply circuits of all indicator light assemblies;

[0154] When there is an indicator light component whose power supply circuit is in the on state, an erroneous alarm signal is output.

[0155] In the specific implementation of this embodiment, after the controller completes receiving the feedback signal of the indicator light assembly corresponding to the last bolt, it means that a complete round of tightening operation has theoretically ended, but a final check is still required at this time to ensure that the power supply circuits of all indicator light assemblies are restored to the initially set disconnected state.

[0156] If any power circuits remain open, meaning an indicator light assembly remains energized, this most likely indicates a bolt was not tightened correctly, the operator missed a step, or the indicator light assembly is faulty, preventing the switch from opening properly. The controller monitors all power circuits and, if any abnormal continuity is detected, immediately outputs an error alarm signal, promptly notifying the operator of a system problem requiring investigation and correction.

[0157] Specifically, the controller supplies power to each indicator assembly in a preset logical sequence, guiding the operator to tighten the corresponding bolts. After each indicator assembly completes its operation, its control switch is turned off, sending a feedback signal to the controller. The controller receives and switches the power supply to the target in sequence until it receives the feedback signal from the last indicator assembly in the sequence, at which point the regular tightening operation comes to a temporary halt.

[0158] The controller then starts monitoring the on / off status of all indicator light component power supply circuits. Through the signal detection terminals connected to each power supply circuit, it quickly scans and determines the on / off status of each circuit. The monitoring results are compared with the preset correct final state (all circuits disconnected).

[0159] If an indicator light component is found in the on state of the power supply circuit during the monitoring process, the controller will immediately output an error alarm signal through the sound and light alarm module (such as buzzer sounding, LED light flashing, etc.) according to the built-in alarm logic. At the same time, the specific error indicator light component number or location information can be displayed on the display screen (if any), which is convenient for operators to accurately locate the problem.

[0160] By conducting a comprehensive review in the final stage, we can eliminate the situation where some bolts are not tightened as required due to human negligence, ensure that every bolt of the fastener is properly handled, greatly improve the reliability of the fastener connection, and reduce the risk of equipment failure due to loose bolts in subsequent operation.

[0161] When an alarm signal appears, since the specific indicator light component with an error can be accurately located, the operator can quickly trace back the operation process and find the root cause of the problem, whether it is caused by operational error, hardware aging or other factors, which facilitates subsequent targeted rectification, provides strong support for quality control and problem investigation, and helps to continuously optimize operating procedures and equipment maintenance plans.

[0162] In another embodiment of the present invention, the controller is further configured to:

[0163] When there is no indicator light component whose power supply circuit is in the on state, a normal prompt signal is output and the control switch is reset to the initial state.

[0164] In the specific implementation of this embodiment, after completing the operation corresponding to the last bolt and receiving the feedback signal, the controller determines whether the entire system has truly reached the expected completion state by monitoring the on / off status of the power supply circuits of all indicator light components. If there are no indicator light components with power supply circuits in the on state, it means that all bolts have been tightened as required and the control switch has been normally opened. At this time, the system is in a correct and stable finalization state. The controller outputs a normal prompt signal to inform the operator that the operation has been successfully completed. At the same time, it resets the control switch to its initial state to prepare for the next round of tightening operations, ensuring that the entire system has the ability to operate continuously and stably.

[0165] Specifically, after receiving the feedback signal from the last indicator light assembly, the controller immediately initiates a comprehensive monitoring program for the on / off status of all indicator light assembly power supply circuits, scanning each power supply circuit one by one through its signal detection terminal. The monitoring results are compared with the preset ideal final state (all power supply circuits are disconnected).

[0166] If monitoring confirms that no indicator light components are in the on state, the controller immediately triggers the normal prompt signal output mechanism. This prompt signal can take various forms, such as a gentle, continuous beep through a buzzer or a specific LED indicator lighting up green, to intuitively inform the operator of the successful operation. At the same time, the controller sends a reset command to each indicator light component, driving the control switch back to the initial connected state, preparing the hardware for possible future use.

[0167] In another embodiment provided by the present invention, each control switch is a single-pole single-throw switch;

[0168] Each indicator light assembly also includes a voltage / current sensor set in the power supply circuit;

[0169] Each signal detection terminal of the controller is connected to the signal output terminal of the corresponding voltage / current sensor.

[0170] Specifically, each control switch is a single-pole single-throw switch, and the single-pole single-throw switch, indicator light, and voltage / current sensor in each indicator light assembly are connected in series in the power supply circuit.

[0171] The initial state of the single-pole single-throw switch is closed, ensuring that the power supply circuit is connected initially.

[0172] Connect each power supply output terminal of the controller to one end of the power supply circuit of the corresponding indicator light component, and connect each signal detection terminal of the controller to the signal output terminal of the corresponding voltage / current sensor to receive the voltage or current signal received by the sensor.

[0173] During the tightening operation, the voltage / current sensor in the indicator light assembly detects the voltage or current value in the power supply circuit in real time and transmits the received signal to the signal detection terminal of the controller. The controller continuously analyzes and judges the received signal.

[0174] When the operator completes tightening the current bolt, he switches the single-pole single-throw switch and disconnects it, which will cause the electrical characteristics in the power supply circuit to change. That is, the voltage value / current value received by the voltage / current sensor in the circuit changes, and the corresponding detection signal is fed back to the signal detection end to trigger the power supply switching to the next power supply output end.

[0175] In another embodiment provided by the present invention, each control switch is a single-pole single-throw switch;

[0176] Each indicator light assembly also includes a position sensor for detecting a switch position of the single-pole single-throw switch;

[0177] Each signal detection terminal of the controller is connected to the signal output terminal of the corresponding position sensor.

[0178] Specifically, each power supply output terminal of the controller is connected to the single-pole single-throw switch and the indicator light of the corresponding indicator light assembly to form a power supply loop.

[0179] Connect each signal detection terminal of the controller to the signal output terminal of the position sensor corresponding to the switch position of the single-pole double-throw switch in the indicator light assembly.

[0180] When the operator completes tightening a bolt, he manually disconnects the corresponding single-pole single-throw switch.

[0181] The position sensor receives the switch position change (from closed to open) and sends this signal to the signal detection terminal of the controller.

[0182] After receiving the switch disconnection signal from the position sensor, the controller stops outputting the power supply signal to the power supply output end of the current interface pair.

[0183] According to the preset logical sequence, the controller outputs a power supply signal to the power supply output end of the next sequence of interface pairs, and the corresponding indicator light lights up to guide the operator to perform the tightening operation of the next bolt.

[0184] In this solution, the fastener logic tightening aid consists of a base, an indicator light assembly, and a controller. The indicator light assembly includes an indicator light, a single-pole, single-throw switch, and a position sensor. The controller has a corresponding number of interface pairs, each consisting of a power output terminal and a signal detection terminal. The single-pole, single-throw switch is initially closed, and the position sensor detects its position. Based on the position sensor signal, the controller controls the power output according to a pre-set logical sequence.

[0185] In another embodiment provided by the present invention, the base is annular;

[0186] The indicator lights are evenly distributed on the circumference of the ring.

[0187] Specifically, the ring-shaped base has certain mechanical strength and stability and can be stably placed on the fastener.

[0188] The inner and outer diameters of the ring are designed based on the size range of common fasteners and ease of operation, ensuring that fasteners of different specifications but similar types to be tightened can be accommodated.

[0189] In order to facilitate the connection with the indicator light assembly, the circumference of the annular base is provided with equally spaced mounting grooves or fixing holes for fixing the housing or supporting structure of the indicator light assembly to ensure that the position of the indicator light assembly on the circumference is accurate and stable.

[0190] The indicator lights are spaced evenly around the circumference of the ring, allowing the status of the indicator lights to be clearly seen from any direction. Typically, the number of indicator lights is determined based on the number of bolts in common fasteners, such as 24 or 32, and evenly spaced around the circumference of the ring.

[0191] The ring-shaped base occupies a certain amount of working space while utilizing the circumferential space to arrange the indicator light components. Compared with bases of other shapes, it neither wastes space nor ensures precise correspondence with fastener bolts. It is suitable for a variety of working environments, especially occasions where space is limited but frequent fastener tightening operations are required.

[0192] In another embodiment provided by the present invention, the base is a composite fiberboard.

[0193] Specifically, the fan blade retaining disk is made of alloy material, and according to current working standards, it is not allowed to use metal materials to contact it.

[0194] Composite fiberboard is used, a material with excellent toughness and plasticity, making it relatively easy to process. When working in the engine's rotating area, the most basic principle is to have as few parts as possible, and the more complete the packaging, the more reliable it is. Finally, a fully encapsulated ring is created, with the circuitry and other components housed within the ring's cavity.

[0195] In another embodiment provided by the present invention, a detachable locking device that matches the shape of the fastener to be weighed is provided on the base.

[0196] A variety of removable retaining devices are designed to match the shapes of common fasteners to be weighed, such as round, square, and polygonal. For round fasteners, the retaining device can be designed with a circular groove. The groove's diameter matches the fastener's outer diameter, with extremely tight tolerances to ensure a tight fit. For square or polygonal fasteners, corresponding grooves are designed, with side lengths and angles consistent with the fastener's size and shape.

[0197] The locking device is connected to the base through a specific connection method to facilitate disassembly and replacement.

[0198] It should be noted that common detachable connection methods include:

[0199] Magnetic connection: Strong magnets are installed on the contact surfaces of the base and the locking mechanism, using magnetic force to firmly attach the two. This connection method is quick and easy to install and remove, and can ensure a certain connection strength, ensuring that the locking mechanism will not easily shift during operation.

[0200] Snap-on connection: A snap-on design on the base and a corresponding slot on the locking mechanism allow for connection. This provides excellent stability and allows for easy removal when the locking mechanism needs replacing by simply pressing the snap-on design.

[0201] Bolt connection: Use bolts to secure the retaining device to the base. This connection method is the most secure, but installation and removal are relatively cumbersome and require tools. Select the appropriate bolt specifications based on the actual use scenario and the required connection strength.

[0202] Ensure that the installation of the retaining device does not affect the proper functioning of the fastener to be weighed and the indicator assembly. Therefore, the retaining device is generally designed based on the original shape of the fastener to be weighed. When designing the retaining device, consider the location and layout of the indicator assembly to avoid obstructing the indicator or interfering with its circuit connections. For example, a clearance groove can be provided on the edge or bottom of the retaining device to leave space for the indicator assembly's wires and sensors.

[0203] When fasteners are placed in the locking mechanism, ensure that the indicator light assembly corresponds to the bolt position of the fastener. This can be done by placing positioning marks on the locking mechanism or accurately marking the base to ensure that the indicator light can accurately indicate the tightening status of each bolt after the locking mechanism is installed.

[0204] Through practical verification, the auxiliary pounding instrument can fundamentally solve the problem of illegal operation caused by operational difficulties, improve production efficiency and ensure maintenance quality while ensuring safety. Through 36 engine fan blade holding and pounding tests (72 poundings completed), various parameters specific to the fan blade holding and pounding work step were statistically analyzed.

[0205] See also Figure 4 , is a schematic diagram showing a comparison of working hours before and after using the auxiliary instrument provided in an embodiment of the present invention.

[0206] During the effect verification process, 20 engines were selected for effect verification. It can be clearly seen that before using the auxiliary instrument, the working hours of this work were mostly more than 3 hours. After using the auxiliary instrument, the working hours of the workers were significantly reduced and the work efficiency was improved.

[0207] For statistics on the number of missed and wrong weighings after using the auxiliary instrument for a period of time and according to the previous working method, see Figure 5 , is a schematic diagram comparing the number of mis-weighings and missed weighings before and after using the auxiliary instrument provided by an embodiment of the present invention. Clearly, it can be seen that the occurrence of missed and mis-weighings during the bolt tightening process, which can easily pose a safety hazard, has been essentially eliminated.

[0208] It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A fastener logic tightening auxiliary instrument, characterized in that: include: A base, an indicator light assembly provided on the base with the same number of bolts as the fasteners to be pounded and corresponding positions, and a controller; Each indicator light component is used to output a light signal and trigger a feedback signal; The controller is configured to: Supply power to the indicator light components in the current sequence according to a preset logical sequence, and monitor the feedback signals of the indicator light components in the current sequence; After receiving the feedback signal from the indicator light assembly in the current order, the current order is updated with the next order, power is switched to the indicator light assembly in the updated current order, and the feedback signal from the indicator light assembly in the updated current order is monitored until the feedback signal from the indicator light assembly in the last order is received; The initial current order is the first order in the logical order.

2. The fastener logic tightening auxiliary instrument according to claim 1, characterized in that: Each indicator light assembly is also used to trigger a reset signal; The controller is further configured to: After powering the indicator light components in the current sequence, the feedback signals of all indicator light components are monitored; After receiving feedback signals from indicator light components in other sequences, marking the incorrectly triggered indicator light components and monitoring the reset signals of the incorrectly triggered indicator light components; After receiving the reset signal of the falsely triggered indicator light assembly, the feedback signal of the indicator light assembly in the current sequence is continuously monitored.

3. The fastener logic tightening auxiliary instrument according to claim 1, characterized in that: The controller is also configured to: After powering the indicator light components in the current sequence, the feedback signals of all indicator light components are monitored; When feedback signals from indicator light components of other sequences are received and feedback signals from indicator light components of the current sequence are received, the current sequence is updated with the previous sequence, power is switched to the updated indicator light components of the current sequence, and the feedback signals from the updated indicator light components of the current sequence are monitored.

4. The fastener logic tightening auxiliary instrument according to claim 1, characterized in that: Each indicator light assembly includes an indicator light and a control switch; The controller supplies power to the control switch of the corresponding indicator light assembly and the power supply circuit composed of the indicator light through each power supply output terminal; Each signal detection terminal of the controller detects the on / off state of the corresponding power supply circuit, and triggers the corresponding feedback signal and reset signal in sequence when the on / off state switches.

5. The fastener logic tightening auxiliary instrument according to claim 4, characterized in that: Each control switch is a single-pole double-throw switch; The movable end and the first fixed end of each single-pole double-throw switch are connected to the power supply circuit of each indicator light assembly, and the second fixed end of each single-pole double-throw switch is connected to the signal detection end corresponding to the controller.

6. The fastener logic tightening auxiliary instrument according to claim 4, characterized in that: A preset control loop is also provided between the controller and each indicator light; The controller is further configured to: Before supplying power to the indicator light components in the current sequence according to the preset logical sequence, monitoring the on / off status of the power supply circuits of all indicator light components; Controlling the operation of the indicator light in the disconnected state of the power supply circuit with a preset first control parameter, and monitoring the on-off state of the power supply circuit of the indicator light assembly; The indicator light in the on-state of the power supply circuit is controlled to operate according to the preset second control parameter.

7. The fastener logic tightening auxiliary instrument according to claim 4, characterized in that: The controller is further configured to: After receiving the feedback signal from the last indicator light assembly, monitor the on / off status of the power supply circuits of all indicator light assemblies; When there is an indicator light component whose power supply circuit is in the on state, an erroneous alarm signal is output.

8. The fastener logic tightening auxiliary instrument according to claim 7, characterized in that: The controller is further configured to: When there is no indicator light component whose power supply circuit is in the on state, a normal prompt signal is output and the control switch is reset to the initial state.

9. The fastener logic tightening auxiliary instrument according to claim 4, characterized in that: Each control switch is a single-pole single-throw switch; Each indicator light assembly also includes a voltage / current sensor set in the power supply circuit; Each signal detection terminal of the controller is connected to the signal output terminal of the corresponding voltage / current sensor.

10. The fastener logic tightening auxiliary instrument according to claim 4, characterized in that: Each control switch is a single-pole single-throw switch; Each indicator light assembly also includes a position sensor for detecting a switch position of the single-pole single-throw switch; Each signal detection terminal of the controller is connected to the signal output terminal of the corresponding position sensor.

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