Automatic high-pressure casing screw tightening and torque measuring device in aero-engine assembling process

Abstract

The utility model relates to the technical field of aero-engine maintenance, and particularly discloses a high-pressure casing screw automatic tightening and torque measuring device in the aero-engine assembly process, which is characterized in that a rotary table is arranged on an equipment base, the lower end of the rotary table is connected with a first servo motor arranged on the equipment base, and the rotary table is driven to rotate through the first servo motor; the vertical driving mechanism is arranged on the equipment base and used for driving the horizontal driving mechanism to move in the vertical direction. The horizontal driving mechanism is arranged on the vertical driving mechanism and used for driving the tightening gun to move in the horizontal direction. The tightening gun is horizontally arranged on the horizontal driving mechanism, and a torque sensor and an angle sensor are arranged in the tightening gun; the control system comprises a tightening gun controller and a PLC, the tightening gun controller is electrically connected with the tightening gun, and the PLC is electrically connected with the first servo motor, the second servo motor and an electromagnetic valve of the linear air cylinder. Therefore, the problems of missed assembly, missed force limiting, missed counting and low efficiency in the manual assembly process are solved.

Description

Technical Field

[0001] This application relates to the technical field of aero-engine maintenance, and particularly to a device for automatically tightening and torque measuring the screws of a high-pressure casing during the assembly process of an aero-engine. Background Art

[0002] During the maintenance process of a certain type of aero-engine, after the preliminary assembly of the high-pressure casing is completed by the staff, it is necessary to perform a limited force operation on the screws on the high-pressure casing. However, the screws on the high-pressure casing are densely distributed and numerous in quantity. During the normal assembly process, the operator is easily affected by factors such as distraction of attention, work fatigue, and interruption by unexpected events, thus reducing the assembly quality. Affected by the above factors, when the worker performs the limited force operation on the screws, there is a risk of missing assembly, missing limited force, and missing counting, which poses a hidden danger for the high-reliability operation of the engine, and will further restrict the overall assembly efficiency, resulting in unpredictable risks. Summary of the Invention

[0003] The purpose of this application is to provide a device for automatically tightening and torque measuring the screws of a high-pressure casing during the assembly process of an aero-engine, so as to solve the problems in the prior art that during the limited force operation of the screws, there are risks of missing assembly, missing limited force, and missing counting, which pose a hidden danger for the high-reliability operation of the engine, and will further restrict the overall assembly efficiency, resulting in unpredictable risks.

[0004] To achieve the above purpose, the embodiment of this application provides a device for automatically tightening and torque measuring the screws of a high-pressure casing during the assembly process of an aero-engine, including: an equipment base, a turntable, a vertical driving mechanism, a horizontal driving mechanism, a tightening gun, and a control system. Among them,

[0005] The turntable is arranged on the equipment base, and the lower end of the turntable is connected to a first servo motor arranged on the equipment base, and the turntable is driven to rotate by the first servo motor;

[0006] The vertical driving mechanism is arranged on the equipment base and is used to drive the horizontal driving mechanism to move in the vertical direction;

[0007] The horizontal driving mechanism is arranged on the vertical driving mechanism and is used to drive the tightening gun to move in the horizontal direction;

[0008] The tightening gun is horizontally arranged on the horizontal driving mechanism and is internally provided with a torque sensor and an angle sensor;

[0009] The control system includes a tightening gun controller and a PLC controller. The tightening gun controller is electrically connected to the tightening gun, and the PLC controller is electrically connected to the first servo motor, the second servo motor, and the solenoid valve of the linear cylinder.

[0010] Optionally, it includes: a product fixing tooling, which includes positioning screws and lock washers. The positioning screws are arranged in through holes opened at the edge of the turntable, and the lock washers are sleeved on the upper ends of the positioning screws.

[0011] Optionally, the vertical driving mechanism includes a lead screw, a vertical guide rail, and a sliding plate. The lower end of the vertical guide rail is connected to the equipment base, and a second servo motor is provided at the upper end of the vertical guide rail. The second servo motor drives the vertically arranged lead screw to rotate through a pulley set. The sliding plate is slidably connected to the vertical guide rail, and a lead screw nut provided on the sliding plate is sleeved on the lead screw. The rotation of the lead screw drives the sliding plate to move in the vertical direction under the limitation of the vertical guide rail.

[0012] Optionally, the horizontal driving mechanism includes a linear cylinder, a horizontal guide rail, and a fixing plate. The horizontal guide rail is arranged on the sliding plate, the fixing plate is slidably connected to the horizontal guide rail, the linear cylinder is arranged on the sliding plate, and the piston rod of the linear cylinder is connected to the fixing plate for driving the fixing plate to move in the horizontal direction on the horizontal guide rail.

[0013] Optionally, it includes: a photoelectric proximity switch, which is arranged on the equipment base and below the turntable, and is electrically connected to the control system. The photoelectric proximity switch includes a laser sensor;

[0014] A positioning boss is provided at the lower end of the turntable, and the distances between the positioning boss and the photoelectric proximity switch and the rotation axis of the first servo motor are equal.

[0015] Optionally, the control system includes a control panel, which is electrically connected to the tightening gun controller and the PLC controller respectively. The control panel is composed of a touch screen and is used to realize the input of control information and the display of output information of the human-machine interaction interface.

[0016] Optionally, a safety system is embedded in the control system. The safety system includes an emergency stop switch and an audible and visual alarm device. The emergency stop switch is used to stop all actions of the device when pressed in an emergency, and the audible and visual alarm device is used to emit warning signals through a three-color light and a buzzer to remind the operator when the equipment fails.

[0017] Optionally, it includes: a control cabinet, which is arranged below the equipment base, and a plurality of pulleys are provided at the lower end of the control cabinet.

[0018] The embodiments of the present application have the following advantages:

[0019] Compared with the prior art, the device provided by the above technical solution realizes the precise control of the control system for the tightening gun by fixing and limiting the high-pressure casing, and driving the tightening gun by the vertical driving mechanism and the horizontal driving mechanism. It can automatically limit the force and display the final limited force torque, record and analyze the tightening force limit data, and can identify the wrong assembly process. It realizes the automatic force limit tightening of all screws on the high-pressure casing in the full-automatic mode and stores the measurement data, which can effectively reduce the labor intensity of the assembler, ensure the working accuracy, reduce the error rate in the process of assembling the screws of the high-pressure casing, reduce the potential safety hazards of the whole machine, improve the maintenance and assembly quality of the aero-engine, and can effectively improve the assembly efficiency of the whole machine. Thus, it can solve the problems of easy omission of assembly, force limit, counting and low efficiency in the manual assembly process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary, and for those of ordinary skill in the art, without creative efforts, other implementation drawings can also be obtained according to the provided drawings.

[0021] Figure 1 The front view of an automatic screw tightening and torque measuring device for a high-pressure casing during the assembly process of an aero-engine provided by at least one embodiment of the present application;

[0022] Figure 2 The three-dimensional structure diagram of an automatic screw tightening and torque measuring device for a high-pressure casing during the assembly process of an aero-engine provided by at least one embodiment of the present application;

[0023] Figure 3 The turntable structure diagram of an automatic screw tightening and torque measuring device for a high-pressure casing during the assembly process of an aero-engine provided by at least one embodiment of the present application;

[0024] Figure 4 The three-dimensional structure diagram of the vertical driving mechanism and the horizontal driving mechanism of an automatic screw tightening and torque measuring device for a high-pressure casing during the assembly process of an aero-engine provided by at least one embodiment of the present application;

[0025] Figure 5 The side view of the vertical driving mechanism and the horizontal driving mechanism of an automatic screw tightening and torque measuring device for a high-pressure casing during the assembly process of an aero-engine provided by at least one embodiment of the present application;

[0026] Figure 6 Another three-dimensional structure diagram of an automatic screw tightening and torque measuring device for a high-pressure casing during the assembly process of an aero-engine provided by at least one embodiment of the present application.

[0027] Meanings of the reference numerals:

[0028] 1. Equipment base, 2. Turntable, 3. First servo motor, 4. Positioning screw, 5. Locking piece, 6. Vertical guide rail, 7. Slide plate, 8. Slide block, 9. Second servo motor, 10. Linear cylinder, 11. Horizontal guide rail, 12. Fixed plate, 13. Tightening gun, 14. Photoelectric proximity switch, 15. Positioning boss, 16. Control panel, 17. Control cabinet, 18. Pulley, 19. High-pressure casing. Detailed implementation manners

[0029] The following specific embodiments illustrate the implementation manners of the present application. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0030] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. Unless otherwise clearly defined and limited, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0031] In addition, the technical features involved in different implementation manners of the present application described below can be combined with each other as long as they do not conflict with each other.

[0032] The embodiment of the present application provides an automatic tightening and torque measuring device for high-pressure casing screws during the assembly process of an aeroengine. Refer to Figures 1 to 6 , the device includes:

[0033] Equipment base 1.

[0034] Rotary table 2: The rotary table 2 is arranged on the equipment base 1. The lower end of the rotary table 2 is connected to a first servo motor 3 arranged on the equipment base 1, and the rotary table 2 is driven to rotate by the first servo motor 3; thereby driving the product to rotate.

[0035] In some embodiments, it further includes: a product fixing tooling: customized according to the non-standard base of the high-pressure casing 19 to ensure that the product will not fall off the rotary table 2 due to rotation during automatic force limitation.

[0036] In some embodiments, the product fixing tooling includes positioning screws 4 and lock washers 5. The positioning screws 4 are arranged in through holes opened at the edge position of the rotary table 2, and the lock washers 5 are sleeved on the upper ends of the positioning screws 4;

[0037] The base of the high-pressure casing 19 placed on the rotary table 2 is fixed to the rotary table 2 through the positioning screws 4 and the lock washers 5.

[0038] Specifically, the product fixing tooling is used to fix the high-pressure casing 19 placed on the rotary table 2. A fastening nut is also sleeved above the upper end of the positioning screw 4 and above the lock washer 5. The fastening nut is used to fasten the lock washer 5 from top to bottom. The lock washer 5 has a horizontally extending protrusion, and the protrusion is used to press above the edge of the base of the high-pressure casing 19. Through the fastening action of the fastening nut and through the mutual cooperation of the positioning screw 4 and the lock washer 5, the lock washer 5 realizes the circumferential and vertical direction limiting of the high-pressure casing 19, and the positioning screw 4 realizes the movement limiting of the high-pressure casing 19 in the front, rear, left, and right directions, thereby realizing the fixed limiting of the high-pressure casing 19.

[0039] Vertical driving mechanism: The vertical driving mechanism is arranged on the equipment base 1 and is used to drive the horizontal driving mechanism to move in the vertical direction; thereby realizing the precise movement and positioning of the tightening gun 13 along the vertical direction of the casing.

[0040] In some embodiments, the vertical driving mechanism includes a lead screw, a vertical guide rail 6, and a slide plate 7. The lower end of the vertical guide rail 6 is connected to the equipment base 1, and a second servo motor 9 is arranged at the upper end of the vertical guide rail 6. The second servo motor 9 drives the vertically arranged lead screw to rotate through a pulley group. The slide plate 7 is slidably connected to the vertical guide rail 6, and a lead screw nut arranged on the slide plate 7 is sleeved on the lead screw. The rotation of the lead screw drives the slide plate 7 to move in the vertical direction under the limitation of the vertical guide rail 6.

[0041] Specifically, vertical chutes are arranged on both sides of the vertical guide rail 6, and sliders 8 are arranged at both ends of the slide plate 7. The sliders 8 are coupled with the chutes, thereby realizing the limitation of the slide plate 7 by the vertical chutes; the lead screw can be vertically arranged inside the vertical guide rail 6, and the lead screw can pass through the lead screw nut connected to the slider 8 in the chute. The second servo motor 9 is used to drive the lead screw to rotate to drive the up and down movement of the slide plate 7.

[0042] Horizontal driving mechanism: The horizontal driving mechanism is arranged on the vertical driving mechanism and is used to drive the tightening gun 13 to move in the horizontal direction. It mainly consists of a linear cylinder 10 and a horizontal guide rail 11, realizing the accurate movement and positioning of the tightening gun 13 along the direction of the casing.

[0043] In some embodiments, the horizontal driving mechanism includes a linear cylinder 10, a horizontal guide rail 11, and a fixing plate 12. The horizontal guide rail 11 is arranged on the slide plate 7, the fixing plate 12 is slidably connected to the horizontal guide rail 11, the linear cylinder 10 is arranged on the slide plate 7, and the piston rod of the linear cylinder 10 is connected to the fixing plate 12 and is used to drive the fixing plate 12 to move in the horizontal direction on the horizontal guide rail 11.

[0044] Specifically, the fixing plate 12 is provided with a groove coupled with the horizontal guide rail 11 and is slidably connected to the horizontal guide rail 11 through the groove.

[0045] Tightening gun 13: The tightening gun 13 is horizontally arranged on the horizontal driving mechanism, and realizes precise control during the tightening process through built-in torque sensors and angle sensors, and records and feeds back important parameters during this process.

[0046] Specifically, the gun head of the tightening gun 13 is equipped with a socket, and the tightening of the screw is realized by rotating the gun head. In addition, the tightening gun 13 is built-in with a torque sensor and an angle sensor to realize precise control and data feedback recording of the assembly torque and assembly position of the screw.

[0047] In some embodiments, the tightening gun 13 is arranged on the fixing plate 12.

[0048] In some embodiments, it further includes: a photoelectric proximity switch 14. The photoelectric proximity switch 14 is arranged on the equipment base 1 and is located below the turntable 2 and is electrically connected to the control system. The photoelectric proximity switch 14 includes a laser sensor;

[0049] The lower end of the turntable 2 is provided with a positioning boss 15. When the lower end surface of the positioning boss 15 faces the laser emitting head of the photoelectric proximity switch 14, the turntable 2 is in the assembly zero position. After each rotation of the turntable 2, when the positioning boss 15 returns directly above the laser emitting head of the photoelectric proximity switch 14 again, it can be judged that the turntable 2 has rotated a complete circle and returned to the assembly zero position, thus ensuring that the screws for a complete circle are tightened.

[0050] Control system: In the automatic tightening and torque measurement device for the screws of the high-pressure casing 19 during the aero-engine assembly process, the control system includes:

[0051] In some embodiments, the control system includes a control panel 16: The control panel 16 is composed of a touch screen and is used to implement the input of control information and the display of output information for the human-machine interaction interface, mainly including daily operations (start / stop, modification of basic parameters, manual operation, etc.), alarm prompts, and accident event query functions.

[0052] Tightening gun 13 controller: The tightening gun 13 controller is electrically connected to the tightening gun 13 and is mainly used for the control of the tightening gun 13 and the transmission of data information;

[0053] PLC controller: The PLC controller is electrically connected to the first servo motor 3, the second servo motor 9, and the solenoid valve of the linear cylinder 10. It is mainly used to write and burn in the action programs of each mechanism, preset and debug the axis speed and position parameters, and output control instructions according to the input action programs to achieve the expected movements of the turntable 2, the vertical drive mechanism, and the horizontal drive mechanism;

[0054] PLC counting function: Judge the number of products by recording the number of times the equipment runs through the complete process.

[0055] In some embodiments, in the automatic tightening and torque measurement device for the high-pressure casing 19 screws during the assembly process of the aero-engine, to ensure product safety, a safety system is embedded in its control system for monitoring. The safety system includes:

[0056] Emergency stop switch: Press it in case of an emergency to stop all actions of the device;

[0057] Acousto-optic alarm device: When a fault occurs in the equipment, it emits a warning signal through a three-color light and a buzzer to remind the operator.

[0058] Specifically, through the control system and the safety system, the control and data transmission of the tightening gun 13, daily operation control, alarm prompt, accident event query, equipment parameter debugging, and input / output functions of parameter data are realized.

[0059] In some embodiments, the equipment base 1 is arranged on the control cabinet 17, and a plurality of pulleys 18 are provided at the lower end of the control cabinet 17.

[0060] The method for automatically tightening and torque measuring the high-pressure casing 19 screws by using the automatic tightening and torque measuring device for the high-pressure casing 19 screws during the aero-engine assembly process provided by the embodiments of the present application includes:

[0061] Step 1) Fix the high-pressure casing 19 on the turntable 2 and set the assembly zero point;

[0062] Step 2) Control the vertical drive mechanism and the horizontal drive mechanism through the control system to drive the tightening gun 13 to move, and control the tightening gun 13 through the tightening gun 13 controller to tighten the screw tightening stations on the high-pressure casing 19 in sequence. At the same time, collect and feedback the parameters of the tightening process through the torque sensor and the angle sensor.

[0063] In some embodiments, the step 2) includes:

[0064] Pre-assemble the positioning screw 4 and the lock washer 5 on the high-pressure casing 19 and install and position them on the turntable 2. Then, clamp and fix them using the positioning screw 4 and the lock washer 5, close the safety door and start the equipment;

[0065] Rotate the turntable 2 to make the first screw tightening station of the first row of the high-pressure casing 19 stay at the assembly zero position;

[0066] Specifically, when installing and positioning the high-pressure casing 19, make the first screw tightening station of the first row thereof be directly above the positioning boss 15. In this way, the turntable 2 can be rotated to make the positioning boss 15 be directly above the photoelectric proximity switch 14, so that the first screw tightening station of the first row of the high-pressure casing 19 stays at the assembly zero position, completing the setting of the assembly zero point;

[0067] Control the vertical drive mechanism and the horizontal drive mechanism through the control system to move the tightening gun 13 to the first screw tightening station of the first row, and extend and retract the tightening gun 13 to tighten;

[0068] After the first screw is tightened, control the first servo motor 3 to drive the turntable 2 to rotate, driving the high-pressure casing 19 to rotate to the second screw tightening station for preparation of tightening again;

[0069] Tighten the screws in the first row in sequence. After the tightening is completed, drive the high-pressure casing 19 to rotate through the turntable 2 to make the first screw tightening station of the second row stay at the assembly zero position. At the same time, control the vertical drive mechanism and the horizontal drive mechanism through the control system to move the tightening gun 13 to the first screw tightening station of the second row for preparation of tightening again until the tightening of the remaining screws on the high-pressure casing 19 is completed.

[0070] In summary, compared with the prior art, the device provided by the embodiment of the present application realizes the precise control of the control system for the tightening gun 13 by fixing and limiting the high-pressure casing 19, and driving the tightening gun 13 by the vertical driving mechanism and the horizontal driving mechanism. It can automatically limit the force and display the final limited force torque, record and analyze the tightening force limit data, and can identify the wrong assembly process. It realizes the automatic force limit tightening of all screws on the high-pressure casing 19 in the full-automatic mode and stores the measurement data, which can effectively reduce the labor intensity of the assembler, ensure the working accuracy, reduce the error rate in the screw assembly process of the high-pressure casing 19, reduce the potential safety hazards of the whole machine, improve the maintenance and assembly quality of the aero-engine, and effectively improve the assembly efficiency of the whole machine. Thus, it can solve the problems of easy omission of assembly, omission of force limit, omission of counting and low efficiency in the manual assembly process.

[0071] Note that unless otherwise directly stated, all features disclosed in this specification (including any appended claims, abstract, and drawings) can be replaced by alternative features for achieving the same, equivalent, or similar purposes. Therefore, unless otherwise clearly stated, each disclosed feature is only an example of a group of equivalent or similar features. In the case of use, further, preferably, furthermore, and more preferably are simple starters for elaborating another embodiment based on the foregoing embodiment. The content following the further, preferably, furthermore, or more preferably is combined with the foregoing embodiment to form a complete composition of another embodiment. The components formed by any combination among several further, preferably, furthermore, or more preferably settings following the same embodiment form another embodiment.

[0072] In the implementation of functions and steps, the corresponding functions and steps in each embodiment can also occur in an order different from that shown. For example, two consecutive functions and steps can actually be executed or implemented substantially in parallel, and sometimes they can also be executed or implemented in the reverse order, depending on the functions involved.

[0073] Although the present application has been described in detail with general descriptions and specific embodiments above, on the basis of the present application, some modifications or improvements can be made, which are obvious to those skilled in the art. Therefore, these modifications or improvements made without departing from the spirit of the present application fall within the scope of protection required by the present application.

Claims

1. A device for automatically tightening and measuring torque of high-pressure casing screws during the assembly of an aircraft engine, characterized in that: include: Equipment base, turntable, vertical drive mechanism, horizontal drive mechanism, tightening gun, control system, among which, The turntable is arranged on the device base, and the lower end of the turntable is connected to a first servo motor arranged on the device base, and the turntable is driven to rotate by the first servo motor; The vertical driving mechanism is arranged on the equipment base and is used to drive the horizontal driving mechanism to move in the vertical direction; The horizontal driving mechanism is arranged on the vertical driving mechanism, and is used to drive the tightening gun to move in the horizontal direction; The tightening gun is horizontally arranged on a horizontal driving mechanism and has a built-in torque sensor and an angle sensor; The control system comprises a tightening gun controller and a PLC controller. The tightening gun controller is electrically connected to the tightening gun, and the PLC controller is electrically connected to the first servo motor, the second servo motor, and the electromagnetic valve of the linear cylinder.

2. The automatic tightening and torque measuring device for high-pressure casing screws during the assembly of an aircraft engine according to claim 1, characterized in that: include: The product fixing tooling comprises a positioning screw and a locking plate. The positioning screw is arranged in a through hole opened at the edge of the turntable, and the locking plate is sleeved on the upper end of the positioning screw.

3. The automatic tightening and torque measuring device for high-pressure casing screws during the assembly of an aircraft engine according to claim 1, characterized in that: The vertical drive mechanism includes a screw, a vertical guide rail, and a slide plate. The lower end of the vertical guide rail is connected to the equipment base, and a second servo motor is provided at the upper end of the vertical guide rail. The second servo motor drives the vertically arranged screw to rotate through a pulley group. The slide plate is slidably connected to the vertical guide rail, and the screw nut provided on the slide plate is sleeved on the screw. The rotation of the screw rod drives the slide plate to move in the vertical direction under the limit of the vertical guide rail.

4. The automatic tightening and torque measuring device for high-pressure casing screws during the assembly of an aircraft engine according to claim 3, characterized in that: The horizontal driving mechanism includes a linear cylinder, a horizontal guide rail, and a fixed plate. The horizontal guide rail is arranged on the slide plate, and the fixed plate is slidably connected to the horizontal guide rail. The linear cylinder is arranged on the slide plate, and the piston rod of the linear cylinder is connected to the fixed plate, which is used to drive the fixed plate to move horizontally on the horizontal guide rail.

5. The automatic tightening and torque measuring device for high-pressure casing screws during the assembly of an aircraft engine according to claim 1, characterized in that: include: A photoelectric proximity switch, which is arranged on the equipment base and below the turntable and is electrically connected to the control system, and includes a laser sensor; A positioning boss is provided at the lower end of the turntable, and the distances between the positioning boss and the photoelectric proximity switch and the rotating shaft of the first servo motor are equal.

6. The automatic tightening and torque measuring device for high-pressure casing screws during the assembly of an aircraft engine according to claim 1, characterized in that: The control system comprises a control panel, which is electrically connected to the tightening gun controller and the PLC controller respectively. The control panel is composed of a touch screen for realizing control information input and output information display of a human-machine interaction interface.

7. The automatic tightening and torque measuring device for high-pressure casing screws during the assembly of an aircraft engine according to claim 1, characterized in that: The control system is embedded with a safety system, which includes an emergency stop switch and an audible and visual alarm device. The emergency stop switch is used to stop all actions of the device when pressed in an emergency, and the audible and visual alarm device is used to send a warning signal through a three-color light and a buzzer to remind the operator when a device fails.

8. The automatic tightening and torque measuring device for high-pressure casing screws during the assembly of an aircraft engine according to claim 1, characterized in that: include: A control cabinet is arranged below the equipment base, and a plurality of pulleys are arranged at the lower end of the control cabinet.

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