Logical weighing auxiliary instrument for fastener

Abstract

The utility model discloses a fastener logic weighing auxiliary instrument, which comprises a base, indicator lamp assemblies and a controller, wherein the indicator lamp assemblies are arranged on the base, the number of the indicator lamp assemblies is the same as that of bolts of a fastener to be weighed, and the positions of the indicator lamp assemblies are in one-to-one correspondence; each indicating lamp assembly comprises an indicating lamp and a control switch. Each power supply output end of the controller, the control switch of the corresponding indicator light assembly and the indicator light form a power supply loop, and each signal detection end of the controller receives a detection signal of the on-off state of the corresponding power supply loop; the controller outputs the power supply signal to the power supply output end corresponding to the indicating lamp assembly in the current sequence according to a preset logic sequence, and switches the power supply signal to the power supply output end corresponding to the indicating lamp assembly in the next sequence after receiving the detection signal of the signal detection end corresponding to the indicating lamp assembly in the current sequence. And the detection signal of the signal detection end corresponding to the indicating lamp assembly in the last sequence is received. According to the scheme, guidance assistance can be provided for the complex and tedious fastening process, and the accuracy and reliability of the weighing work process are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to aviation safety technical field, concretely relates to a fastener logic pound tight auxiliary instrument. BACKGROUND

[0002] When engine turbine blade maintenance is carried out, according to maintenance manual requirement, fan blade retaining disc pound tight logic wants to take the 1st bolt of retaining disc as benchmark, counts its hole position on the logic diagram, then counts the real hole position on the real object, can only correspondingly complete the pound tight work of a bolt. 36 fixed bolts need to be searched 72 times, if pound tight twice according to manual requirement, need to complete 144 times search to complete the work. The retaining disc is circumferentially and equidistantly distributed by 36 fixed bolts, and each bolt is consistent in model, and there is no positioning mark on the retaining disc, so that the search is very difficult, in addition, the bolt distribution regularity is not strong, which leads to that the worker operation is very easy to make mistakes, causes serious problems such as wrong pound, missed pound and the like, and lays a safety hidden danger for subsequent maintenance and operation. CONTENT OF THE UTILITY MODEL

[0003] In order to solve the above problems, the utility model provides a fastener logic pound tight auxiliary instrument, which can provide guidance and assistance for complex and tedious fastening process, and improve the accuracy and reliability of the pound tight work process.

[0004] The utility model provides a fastener logic pound tight auxiliary instrument, which comprises a base, a plurality of indicator light assemblies arranged on the base and corresponding to the same number of bolts of the fastener to be tightened, and a controller.

[0005] Each indicator light assembly comprises an indicator light and a control switch;

[0006] The controller comprises a plurality of interface pairs corresponding to the number of indicator light assemblies, each interface pair comprising a power output end and a signal detection end;

[0007] Each power output end of the controller and the control switch and the indicator light of the corresponding indicator light assembly form a power supply loop, and the control switch is used to switch the on-off state of the power supply loop;

[0008] Each signal detection end of the controller receives a detection signal corresponding to the on-off state of the power supply loop;

[0009] The controller outputs a power signal to the power output end corresponding to the indicator light assembly of the current sequence according to a preset logical sequence, and switches the power signal to the power output end corresponding to the indicator light assembly of the next sequence after receiving the detection signal of the signal detection end corresponding to the indicator light assembly of the current sequence, until the detection signal of the signal detection end corresponding to the indicator light assembly of the last sequence is received;

[0010] Wherein, the initial current sequence is the first sequence.

[0011] Preferably, each control switch is a single-pole double-throw switch.

[0012] The moving terminal of each single-pole double-throw switch and the first stationary terminal are connected to the power supply circuit of each indicator light assembly, and the second stationary terminal of each single-pole double-throw switch is connected to the corresponding signal detection terminal of the controller.

[0013] Preferably, the indicator light of each indicator light assembly is an LED.

[0014] Preferably, each control switch is a single-pole single-throw switch.

[0015] Each indicator light assembly further comprises a voltage / current sensor arranged in the power supply circuit.

[0016] Each signal detection terminal of the controller is connected to the signal output terminal of the corresponding voltage / current sensor.

[0017] Preferably, each control switch is a single-pole single-throw switch.

[0018] Each indicator light assembly further comprises a position sensor for detecting the switch position of the single-pole single-throw switch.

[0019] Each signal detection terminal of the controller is connected to the signal output terminal of the corresponding position sensor.

[0020] Preferably, the base is a circular ring.

[0021] Each indicator light is uniformly distributed on the circumference of the circular ring.

[0022] Preferably, the base is a composite fiberboard.

[0023] Preferably, the position of each control switch of each indicator light assembly is correspondingly arranged with the indicator light.

[0024] Preferably, the base is provided with a detachable clamping device matched with the shape of the fastener to be tightened.

[0025] The utility model provides a fastener logic pounds tight auxiliary appearance, include: base, set up on the base with the same number of bolt of fastener that waits for pounds tight, position one -to -one corresponding pilot lamp subassembly and controller, each pilot lamp subassembly includes pilot lamp and control switch, controller includes the interface pair that corresponds with pilot lamp subassembly number, each interface pair includes power output end and signal detection end, the power output end of each of controller and the control switch and pilot lamp of corresponding pilot lamp subassembly constitute power supply loop, and the control switch is used for switching the on -off state of power supply loop, the signal detection end of each of controller receives the detection signal of the on -off state of corresponding power supply loop, the control switch of pilot lamp subassembly keeps the communication state under the initial state, and the controller exports power signal to the power output end corresponding to the pilot lamp subassembly of current order according to the logic order of prearranging, and after receiving the detection signal of the signal detection end corresponding to the pilot lamp subassembly of current order, power signal is switched to the power output end corresponding to the pilot lamp subassembly of next order, until the detection signal of the signal detection end corresponding to the pilot lamp subassembly of last order is received. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is the structure schematic drawing of the fastener logic pounds tight auxiliary appearance provided by the utility model embodiment,

[0027] Figure 2 It is another structure schematic drawing of the fastener logic pounds tight auxiliary appearance provided by the utility model embodiment,

[0028] Figure 3 It is the schematic drawing of before and after work hours contrast of using auxiliary appearance provided by the utility model embodiment,

[0029] Figure 4 It is the schematic drawing of the number contrast of wrong pounds and missing pounds before and after using auxiliary appearance provided by the utility model embodiment. DETAILED DESCRIPTION

[0030] The technical scheme in the utility model embodiments will be described clearly and completely below in conjunction with the drawings in the utility model embodiments, and obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the range of protection of the utility model.

[0031] The utility model embodiment provides a fastener logic pounds tight auxiliary appearance, including: base, set up on the base with the same number of bolt of fastener that waits for pounds tight, position one -to -one corresponding pilot lamp subassembly and controller,

[0032] Each indicator light assembly comprises an indicator light and a control switch;

[0033] The controller comprises a number of interface pairs corresponding to the number of indicator light assemblies, each interface pair comprising a power output end and a signal detection end;

[0034] Each power output end of the controller and the control switch and the indicator light of the corresponding indicator light assembly form a power supply loop, and the control switch is used to switch the on-off state of the power supply loop;

[0035] Each signal detection end of the controller receives a detection signal corresponding to the on-off state of the power supply loop;

[0036] The control switch of the indicator light assembly remains in a connected state in an initial state;

[0037] The controller outputs a power signal to the power output end corresponding to the indicator light assembly of the current sequence according to a preset logical sequence, and switches the power signal to the power output end corresponding to the indicator light assembly of the next sequence after receiving the detection signal of the signal detection end corresponding to the indicator light assembly of the current sequence, until the detection signal of the signal detection end corresponding to the indicator light assembly of the last sequence is received;

[0038] The initial current sequence is the first sequence.

[0039] In the specific implementation of the embodiment, refer to Figure 1 is a structure schematic diagram of a fastener logic tightening auxiliary instrument provided by the utility model embodiment, comprising:

[0040] The base is used for mounting the fastener to be tightened, and is usually designed as a flat plate with a certain shape and size, generally matched with the shape of the fastener to be tightened, and has mounting holes or positioning grooves corresponding to the number and positions of the bolts of the fastener to be tightened, so as to ensure the accurate placement of the fastener.

[0041] The indicator light assembly is arranged on the base and the indicator light assembly, the number and position of the indicator light assembly are one-to-one corresponding to the bolts of the fastener to be tightened; each indicator light assembly comprises an indicator light and a control switch. The indicator light can be a light-emitting diode (LED), which has the advantages of high light-emitting efficiency, long service life and fast response speed. The control switch can be a micro-dial switch or a button switch, which is installed near the indicator light for the convenience of the operator to operate when tightening the bolt. A plurality of indicator light assemblies are fixed on the base in a certain arrangement mode, corresponding to the positions of the bolts of the fastener.

[0042] The controller internally contains interface pairs corresponding to the number of indicator light assemblies, each interface pair including a power supply output end and a signal detection end. The controller can be implemented using a microcontroller (MCU) or a programmable logic controller (PLC). The MCU or PLC has multiple input and output ports, and the output signals of the ports and the reading of the input signals can be controlled through programming. At the same time, the controller also includes a power module to provide stable power supply for the entire instrument, as well as necessary circuit connections and control chips for implementing logic control functions.

[0043] It should be noted that only the internal principle of two indicator light assemblies is shown in the figure, and the principles and working processes of other indicator light assemblies are similar and will not be repeated here.

[0044] Among them, each power supply output end of the controller is connected to one end of the control switch of the corresponding indicator light assembly through 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, thereby forming a power supply loop. When the control switch is closed, current flows out from the power supply output end of the controller, passes through the control switch and the indicator light, and returns to the negative pole of the power supply, forming a complete loop, and the indicator light turns on.

[0045] Each signal detection end of the controller receives a detection signal of the on-off state of the corresponding power supply loop.

[0046] It should be noted that there are many ways to detect the on-off state, including potential detection, current detection, etc., as well as LED light detection, control switch position detection, etc. The detection can be realized through the corresponding implementation. Exemplarily, 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 loop. When the control switch is closed, the power supply loop is turned on, and the signal detection end detects a high-level signal; when the control switch is opened, the power supply loop is cut off, and the signal detection end detects a low-level signal. By detecting the change of the level, the controller can determine the on-off state of the power supply loop.

[0047] The controller outputs the power supply signal to the power supply output end corresponding to the indicator light assembly of the current order according to the preset logic sequence. That is, starting from the first interface pair, a high-level signal is output to make the corresponding indicator light turn on, prompting the operator to tighten the corresponding bolt. After the operator completes the tightening and opens the control switch, the signal detection end of the controller receives a signal indicating that the current bolt has been tightened. According to this signal, the controller switches the power supply signal to the power supply output end corresponding to the indicator light assembly of the next order according to the preset program, so that the next indicator light turns on and continues to read the signal of the detection signal end of the next order interface pair.

[0048] It should be noted that the controller can be a single-chip microcomputer controller in the implementation of the case, the controller includes a plurality of interface pairs, each interface pair includes a power output end out and a signal detection end in.

[0049] The fastener logic pound tight auxiliary instrument is applied, the base of the instrument is placed on the fastener to be pound tight, and the bolt position is ensured to correspond to the indicator light assembly on the base. At this time, the control switch of all indicator light assemblies is in the initial communication state.

[0050] The auxiliary instrument is designed in proportion with the bolt to be pound tight, and the indicator light is consistent with the position of the bolt to be pound tight. In actual work, since the bolts are distributed at equal intervals in the circumferential direction and have consistent specifications, the worker can select a bolt as No. 1 position at will, and then only needs to pound the corresponding bolt position according to the indication of the indicator light, without the need to compare with the manual icon.

[0051] Each power output end of the controller and the control switch and the indicator light of the corresponding indicator light assembly constitute a power supply circuit. Since the control switch is initially connected, if an external power source is mistakenly connected when the controller is not working, some indicator lights may light up, so in actual application, the total power supply of the controller needs to be connected after the preparation work is completed.

[0052] Start the controller, and the controller starts working according to the preset logical sequence. It first outputs a power supply signal to the power output end in the interface pair of the current sequence (usually the first one). For example, if there is a fastener with 32 bolts, corresponding to 32 indicator light assemblies, numbered 1-32. The controller first outputs a power supply signal to the power output end in interface pair 1.

[0053] At this time, the indicator light of the indicator light assembly corresponding to interface pair 1 lights up. The operator uses the pound tight tool to pound the first bolt, and when the pound tight is appropriate, the operator manually disconnects the control switch of the indicator light assembly. After the control switch is disconnected, the current power supply circuit is cut off, and the signal detection end of the controller (corresponding to the signal detection end in interface pair 1) receives the detection signal of the change of the power supply circuit on-off state, i.e. from the signal of the signal from the communication to the disconnection.

[0054] The controller switches the working state immediately after receiving the detection signal of the signal detection end of the current sequence (interface pair 1), 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 the interface pair 2 is turned on, and the operator tightens the second bolt in the same way, and manually disconnects the control switch of the indicator light assembly after completion. The signal detection end (corresponding to the signal detection end in the interface pair 2) of the controller receives the detection signal again. Repeat the operation until completion: according to the above steps, the controller switches the power supply output end continuously, and the operator tightens the bolt one by one and manually disconnects the control switch, until the controller receives the detection signal of the signal detection end in the interface pair of the last sequence (such as interface pair 32). At this time, all the bolts have completed the tightening operation, and the tightening work of the whole fastener is completed. In this way, it is ensured that each bolt is tightened in turn according to the preset logical sequence, and the accuracy and efficiency of the tightening work are improved.

[0055] In another embodiment of the utility model, each control switch is a single-pole double-throw switch.

[0056] The moving 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 corresponding signal detection end of the controller.

[0057] In the specific implementation of the embodiment, each control switch is a single-pole double-throw switch, as shown in Figure 2 Another structural schematic view of the fastener logical tightening auxiliary instrument is provided in the embodiment of the utility model.

[0058] Each control switch is a single-pole double-throw switch, for example, the first single-pole double-throw switch KS1 and the second single-pole double-throw switch KS2 shown in the figure.

[0059] The moving end B3, the first fixed end B2 and the second fixed end B1 of the first single-pole double-throw switch KS1.

[0060] The moving end A3, the first fixed end A2 and the second fixed end B1 of the second single-pole double-throw switch KS2.

[0061] The moving 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 corresponding signal detection end of the controller.

[0062] The input and feedback of the indicator light are controlled by the single-pole double-throw switch, and the corresponding indicator light of the bolt to be tightened is lit in turn according to the tightening bolt sequence required by the aircraft maintenance manual.

[0063] Exemplarily, when the auxiliary pounder is started, the KS1 control switch is initially positioned at the B3 and B2 circuit connection, the L1 indicator light is turned on, and the worker is prompted to pound the No. 1 bolt at this moment. After the No. 1 bolt is completed, the worker confirms and presses the confirmation switch KS1, the KS1 is disconnected from the B2 position and the B3 and B1 circuit is connected, the L1 indicator light is turned off and the feedback circuit signal is activated to the controller, the controller outputs the signal to the KS2 control switch to connect the A3 and A2 circuit, the L2 indicator light is turned on, and the worker is prompted to the next logical position of the bolt to be tightened. And so on, the remaining 34 bolts are sequentially tightened by the display light in the circuit.

[0064] Specifically, considering the actual working environment and worker habits, as well as many factors such as prevention of inaction, price, etc., the rocker dual-control switch is preferred when selecting the control switch.

[0065] The scheme provided in the application takes the single-chip microcomputer as the core of the control system, can accurately control the lighting sequence and state of the LED indicator light according to the tightening logic sequence given in the manufacturer's manual, and ensures that each operation meets the specification requirements. The single-chip microcomputer can automatically judge and indicate the bolt position to be tightened next, reducing the possibility of human judgment errors and improving work efficiency.

[0066] In another embodiment provided by the utility model, the indicator light of each indicator light assembly is an LED.

[0067] In Figure 2 , the selected indicator light is an LED, including L1 and L2.

[0068] In specific application, in order to highlight the visual enhancement effect, the 5-12V voltage LED light-emitting diode is adopted by comparison. Considering the convenience of maintenance and the reliability of voltage in the later period, the 9V voltage battery block is preferred.

[0069] For the working environment with insufficient light, high-brightness LED indicator light is adopted. These LED indicator lights can still clearly indicate the bolt position, number and tightening state under insufficient light conditions. This display technology improves the visibility and comfort of workers in dim light.

[0070] In another embodiment provided by the utility model, each control switch is a single-pole single-throw switch.

[0071] Each indicator light assembly further comprises a voltage / current sensor arranged in the power supply circuit.

[0072] The signal detection end of the controller is connected with the signal output end of the corresponding voltage / current sensor.

[0073] Specifically, each control switch is a single-pole single-throw switch, and the single-pole single-throw switch, the indicator lamp and the voltage / current sensor in each indicator lamp assembly are connected in series in the power supply circuit.

[0074] The single-pole single-throw switch is initially closed, so that the power supply circuit is initially connected.

[0075] Each power supply output end of the controller is connected to one end of the power supply circuit of the corresponding indicator lamp assembly, and each signal detection end of the controller is connected to the signal output end of the corresponding voltage / current sensor, so as to receive the voltage or current signal detected by the sensor.

[0076] During the tightening operation of the operator, the voltage / current sensor in the indicator lamp assembly detects the voltage or current value in the power supply circuit in real time, and transmits the detected signal to the signal detection end of the controller. The controller continuously analyzes and judges the received signal.

[0077] When the operator completes the tightening of the current bolt, the single-pole single-throw switch is switched off, which will cause the electrical characteristics in the power supply circuit to change, that is, the voltage / current value detected 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 of the next power supply output end.

[0078] In another embodiment of the utility model, each control switch is a single-pole single-throw switch.

[0079] Each indicator lamp assembly further comprises a position sensor for detecting the switch position of the single-pole single-throw switch.

[0080] Each signal detection end of the controller is connected to the signal output end of the corresponding position sensor.

[0081] Specifically, each power supply output end of the controller is connected to the single-pole single-throw switch and the indicator lamp of the corresponding indicator lamp assembly, forming a power supply circuit.

[0082] Each signal detection end of the controller is connected to the signal output end of the position sensor of the switch position of the single-pole double-throw switch in the corresponding indicator lamp assembly.

[0083] When the operator completes the tightening of a bolt, the corresponding single-pole single-throw switch is manually turned off.

[0084] The position sensor detects the change of the switch position (from closed to open) and sends the signal to the signal detection end of the controller.

[0085] After receiving the switch-off signal from the position sensor, the controller stops outputting the power supply signal to the power supply output end of the current interface pair.

[0086] According to the preset logical sequence, the controller outputs the power supply signal to the power supply output end of the next sequential interface pair, the corresponding indicator light is turned on, and the operator is guided to perform the next bolt tightening operation.

[0087] In this scheme, the fastener logic tightening auxiliary instrument is composed of a base, an indicator light assembly and a controller. The indicator light assembly includes indicator lights, a single-pole single-throw switch and a position sensor, the controller has a corresponding number of interface pairs with the indicator light assembly, and each interface pair includes a power supply output end and a signal detection end. The single-pole single-throw switch is initially closed, the position sensor detects the switch position, and the controller controls the power supply output according to the position sensor signal in a preset logical sequence.

[0088] In another embodiment of the present application, the base is a circular ring type.

[0089] Each indicator light is uniformly distributed on the circumference of the circular ring.

[0090] Specifically,

[0091] The circular ring-shaped base has certain mechanical strength and stability, and can be stably placed on the fastener.

[0092] The inner diameter and outer diameter of the circular ring are designed according to the size range of common fasteners and the convenience of operation, so as to ensure that different specifications but similar types of fasteners to be tightened can be accommodated.

[0093] In order to facilitate connection with the indicator light assembly, equidistant mounting grooves or fixing holes are arranged on the circumference of the circular ring type base for fixing the shell or support structure of the indicator light assembly, so as to ensure the accurate and stable position of the indicator light assembly on the circumference.

[0094] Each indicator light is equally angularly spaced along the circumference of the circular ring, so that the state of the indicator light can be clearly seen from any direction when observing the base. Generally, the number of indicator lights is reasonably determined according to the number of common fastener bolts, such as 24, 32, etc., and is uniformly distributed on the circumference of the circular ring.

[0095] The circular ring-shaped base occupies a certain working space, and utilizes the circumferential space to arrange the indicator light assembly. Compared with other shaped bases, it not only does not cause space waste, but also ensures accurate correspondence with the fastener bolts, and is suitable for various working environments, especially occasions where the fastener tightening operation needs to be frequently performed in limited space.

[0096] In another embodiment of the present application, the base is a composite fiber plate.

[0097] Specifically, the fan blade retaining disc is made of alloy material, and according to the current working standard, metal materials are not allowed to contact with it.

[0098] The composite fiber plate has good toughness and plasticity, and the processing difficulty is relatively small. In the rotating area of the engine, the most basic principle is that the fewer parts are better, and the more complete the wrapping is, the more reliable it is. Finally, a full-sealing ring is made, and the circuit and other elements are placed in the cavity of the ring.

[0099] In another embodiment of the present application, a detachable clamping device matching the shape of the fastener to be weighed is arranged on the base.

[0100] According to the shape of the common fastener to be weighed, such as circular, square, polygon and the like, a plurality of detachable clamping devices matching the same are designed. For a circular fastener, the clamping device can be designed as a structure with a circular groove, the diameter of the groove being matched with the outer diameter of the fastener, and the tolerance being controlled within a very small range to ensure that the fastener can be closely embedded. For a square or polygonal fastener, a clamping groove of corresponding shape is designed, the side length and angle of the clamping groove being consistent with the size and shape of the fastener.

[0101] The clamping device is connected to the base by a specific connection mode for easy disassembly and replacement.

[0102] It should be noted that the common detachable connection modes include:

[0103] Magnetic connection: strong magnets are respectively installed on the contact surfaces of the base and the clamping device, and the two are tightly attracted together by magnetic force. This connection mode is convenient and fast to install and disassemble, and can ensure a certain connection strength to ensure that the clamping device will not be easily displaced during operation.

[0104] Buckle connection: buckles are arranged on the base, and corresponding clamping grooves are designed on the clamping device to realize connection by the cooperation of the buckles and the clamping grooves. The buckle connection has good stability, and when the clamping device needs to be replaced, it can be easily disassembled by pressing the buckle.

[0105] Bolt connection: the clamping device is fixed to the base by bolts. This connection mode is the most secure, but the installation and disassembly are relatively cumbersome and need to be operated with tools. The appropriate bolt specification can be selected according to the actual use scene and the requirement of connection strength.

[0106] To ensure that the installation of the clamping device will not affect the normal operation of the fastener to be weighed and the indicator light assembly. Therefore, the clamping device is generally designed according to the original shape of the fastener to be weighed. When designing the clamping device, the position and layout of the indicator light assembly should be considered to avoid blocking the indicator light or interfering with the circuit connection. For example, an avoidance groove is arranged on the edge or bottom of the clamping device to leave space for the wires and sensors of the indicator light assembly.

[0107] When the fastener is placed in the clamping device, the indicating lamp assembly is ensured to correspond to the bolt position of the fastener one by one. The indicating lamp can accurately indicate the tightening state of each bolt after the clamping device is installed by setting positioning marks on the clamping device or performing accurate dimension marking on the base.

[0108] Through actual verification, the auxiliary tightening instrument can fundamentally solve the illegal operation caused by difficult operation, improve the production efficiency under the premise of safety, and ensure the maintenance quality. Through 36 engine fan blade retaining disc tightening tests (72 times of tightening are completed), various parameters of the fan blade retaining disc tightening work step are counted.

[0109] Referring to Figure 3 is the schematic diagram of work hour comparison before and after using the auxiliary instrument provided by the embodiment of the utility model.

[0110] In the process of effect verification, 20 engines are selected for effect verification, and it can be obviously seen that the working hours consumed by the work before using the auxiliary instrument are mostly more than 3 hours, and the working hours of workers are obviously greatly reduced and the working efficiency is improved after using the auxiliary instrument.

[0111] After using the auxiliary instrument for a period of time, the data statistics of the number of missed tightening and wrong tightening according to the previous working method are shown in Figure 4 is the schematic diagram of the number of missed tightening and wrong tightening comparison before and after using the auxiliary instrument provided by the embodiment of the utility model. It can be obviously seen that the events of missed tightening and wrong tightening which are prone to safety hazards in the process of tightening bolts are basically eliminated.

[0112] It should be pointed out that, for ordinary skilled persons in the technical field, a number of improvements and refinements can be made without departing from the principles of the utility model, and these improvements and refinements are also regarded as the protection scope of the utility model.

Claims

1. A fastener logic tightening auxiliary device, characterized in that, include: The base, an indicator light assembly with the same number and position as the bolts on the fastener to be weighed, and a controller; Each indicator light assembly includes indicator lights and control switches; The controller includes interface pairs corresponding to the number of indicator light components, and each interface pair includes a power output terminal and a signal detection terminal; Each power supply output terminal of the controller, together with the control switch of the corresponding indicator light assembly and the indicator light, constitutes a power supply circuit. The control switch is used to switch the on / off state of the power supply circuit. Each signal detection terminal of the controller receives a detection signal indicating the on / off status of the corresponding power supply circuit; The controller outputs power signals to the power output terminal corresponding to the indicator light component in the current sequence according to a preset logical order. After receiving the detection signal from the signal detection terminal corresponding to the indicator light component in the current sequence, the controller switches the power signal to the power output terminal corresponding to the indicator light component in the next sequence, until it receives the detection signal from the signal detection terminal corresponding to the indicator light component in the last sequence. The initial current order is the first order.

2. The fastener logic tightening auxiliary device according to claim 1, characterized in that, Each control switch is a single-pole double-throw switch; The moving end and the first stationary end of each single-pole double-throw switch are connected to the power supply circuit of each indicator light assembly, and the second stationary end of each single-pole double-throw switch is connected to the corresponding signal detection end of the controller.

3. The fastener logic weighing auxiliary device according to claim 1, characterized in that, The indicator lights for each indicator light assembly are LEDs.

4. The fastener logic tightening auxiliary device according to claim 1, characterized in that, Each control switch is a single-pole single-throw switch; Each indicator light assembly also includes a voltage / current sensor configured 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.

5. The fastener logic weighing auxiliary device according to claim 1, characterized in that, Each control switch is a single-pole single-throw switch; Each indicator light assembly also includes a position sensor for detecting the 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.

6. The fastener logic tightening auxiliary device according to claim 1, characterized in that, The base is circular. The indicator lights are evenly distributed on the circumference of the ring.

7. The fastener logic tightening auxiliary device according to claim 1, characterized in that, The base is made of composite fiberboard.

8. The fastener logic weighing auxiliary device according to claim 1, characterized in that, The positions of the control switches for each indicator light assembly are set to correspond to the indicator lights.

9. The fastener logic tightening auxiliary device according to claim 1, characterized in that, The base is equipped with a detachable locking device that matches the shape of the fastener to be weighed.

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