Aircraft propeller nut safety lock plate pressing equipment

Abstract

The utility model discloses aircraft propeller nut safety lock plate pressing equipment which comprises a pressing piece, a positioning piece and a driving piece, the pressing piece is provided with a pressing face matched with one end of a nut, and the pressing face is used for pressing a safety lock plate on the nut on the side face of the nut when moving towards the nut; the positioning piece is provided with a positioning end opposite to the pressing face, and the positioning end is used for abutting against the side, away from the pressing piece, of the nut so as to lock the position of the nut. The driving piece is connected with the pressing piece and used for driving the pressing piece to move relative to the nut. According to the scheme, the safety lock plate on the nut can be pressed on the side face of the nut, so that the position of the nut is fixed, the problem that the nut is loosened due to vibration in the working process is solved, a traditional method that the safety lock plate is pressed through manual beating is replaced, and the working efficiency is remarkably improved; and the risks of personal injury and part damage caused by improper operation are reduced.

Description

Technical Field

[0001] This utility model relates to the field of locking plate clamping tools, specifically to a locking plate clamping device for aircraft propeller nuts. Background Technology

[0002] The propeller is an important component of the aircraft's power plant. The rear end of each propeller blade is connected to the engine shaft. The propeller is fixed to the shaft by a series of studs and nuts. During installation, the nuts need to be stressed to ensure that the force on the mating surface between the propeller and the engine shaft is even. Double locking plates are used to prevent the nuts from loosening, ensuring safe and reliable operation.

[0003] For example, the patent with publication number CN109204808A discloses a locking structure for a drone propeller. This locking structure for a drone propeller includes blades and a motor. The locking structure mounting base is fixedly connected to the motor by locking structure fixing screws. The blade clamping plate is fixedly connected to the locking structure mounting base by blade rotation fixing screws and blade rotation fixing nuts. The two blades are placed between the blade clamping plate and the locking structure mounting base.

[0004] During flight, to prevent nuts from loosening, current solutions include locking the nut with a limiting mechanism after installation and setting, or using a safety locking plate to press against the side of the nut to ensure its fixed position and effectively prevent the nut from loosening due to vibration. In the aviation field, the tightening of safety locking plates still relies on the traditional method of manually hammering them, using a special steel bar as a "punch" to strike the "punch" with a hammer to make the safety locking plate fit tightly against the nut. However, this traditional method of manually hammering safety locking plates is inefficient, easily damages the safety locking plate, propeller conductive slip rings, and propeller blades, and the base of the safety locking plate may not be fully engaged. In addition, improper operation may also cause hand injuries to personnel. Utility Model Content

[0005] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose an aircraft propeller nut safety lock plate clamping device, which solves the technical problems of low clamping efficiency of safety lock plates, easy damage to lock plates, slip rings and propeller blades, possible incomplete fit at the root of the lock plate, and low safety factor in the existing technology.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0007] This utility model provides a device for tightening a safety lock plate on an aircraft propeller nut, comprising: a clamping component, a positioning component, and a driving component. The clamping component has a clamping surface that engages with one end of the nut, and the clamping surface is used to press the safety lock plate on the nut against the side of the nut when the device moves toward the nut. The positioning component has a positioning end that is disposed opposite to the clamping surface, and the positioning end is used to press against the side of the nut away from the clamping component to lock the position of the nut. The driving component is connected to the clamping component and is used to drive the clamping component to move relative to the nut.

[0008] In some embodiments, the clamping member includes a push rod, one side of which has a first clamping groove that fits with the side of the nut. The groove wall of the first clamping groove forms the clamping surface. When the push rod moves toward the nut, its clamping surface can contact the safety locking piece on the nut, so as to press the safety locking piece to the side of the nut.

[0009] In some embodiments, the positioning member includes a retainer having a positioning cavity formed inside the retainer, the push rod being disposed within the positioning cavity, and the end of the retainer away from the push rod forming a positioning end for abutting against the other side of the nut.

[0010] In some embodiments, the inner side of the positioning end of the retainer is provided with a second clamping groove that matches the other side of the nut.

[0011] In some embodiments, the driving member includes a hydraulic cylinder, the extension and retraction drive shaft of which is connected to the clamping member to drive the clamping member to move relative to the positioning end of the positioning member.

[0012] In some embodiments, a mounting groove is provided at one end of the retainer away from the positioning end, and a through hole is also provided on the mounting groove at a position corresponding to the clamping member. The hydraulic cylinder is installed in the mounting groove, and its telescopic drive shaft passes through the through hole and is connected to the clamping member.

[0013] In some embodiments, the aircraft propeller nut safety lock clamping device further includes a hydraulic system and an electrical system, wherein the hydraulic system is used to supply oil to the hydraulic cylinder, and the electrical system is used to supply power to the hydraulic system.

[0014] In some embodiments, the hydraulic system includes a hydraulic oil tank, a hydraulic oil pump, a pressure gauge, a first oil filter, a second oil filter, a check valve, an unloading valve, and an electric directional valve. The inlet of the hydraulic oil pump is connected to the hydraulic oil tank, and its outlet is connected to the hydraulic cylinder through the check valve and the electric directional valve. The hydraulic oil tank is connected to the first oil filter and the second oil filter through the pressure gauge. The first oil filter is connected to a pipeline flowing from the hydraulic oil pump to the check valve through the unloading valve. The second oil filter is connected to the electric directional valve. The pressure gauge is installed on the connecting pipeline between the unloading valve and the check valve.

[0015] In some embodiments, the electrical system includes a power supply, a fuse, a frequency converter, an oil pump speed controller, a first voltage regulator, a second voltage regulator, an electrical temperature display controller, a hydraulic temperature display controller, a first fan, and a second fan. The power supply is connected to the fuse, the frequency converter, the first voltage regulator, and the second voltage regulator. The oil pump speed controller is connected to the frequency converter, and the frequency converter is connected to the hydraulic oil pump. The first fan and the second fan are both connected to the electrical temperature display controller and the hydraulic temperature display controller, and the electrical temperature display controller and the hydraulic temperature display controller are both connected to the first voltage regulator and the second voltage regulator.

[0016] In some embodiments, the aircraft propeller nut safety lock clamping device further includes a reversing switch, which connects the hydraulic system and the electrical system. The reversing switch is used to control the operation of the hydraulic system, thereby changing the state of the reversing electric steering valve and controlling the operation of the hydraulic cylinder.

[0017] Compared with the prior art, the aircraft propeller nut safety lock plate clamping device provided by this utility model, by setting a clamping component and a driving component, when the driving component is activated, the clamping component will move accordingly. When the clamping surface moves towards the nut, it can press the safety lock plate on the nut against the side of the nut, thereby fixing the position of the nut. This avoids the problem of nut loosening due to vibration during operation. This solution replaces the traditional method of manually pressing the safety lock plate by hammering, which significantly improves work efficiency and reduces the risk of personal injury and component damage caused by improper operation.

[0018] By using a positioning element, the nut can be locked in place at the end of the nut away from the clamping element, ensuring that the nut will not shift its position when subjected to external force, thereby improving the accuracy and efficiency of the clamping operation. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural schematic diagram of the aircraft propeller nut safety lock plate clamping device provided in this embodiment of the utility model;

[0020] Figure 2 This is a three-dimensional structural schematic diagram of the aircraft propeller nut safety lock plate clamping device provided in this embodiment of the utility model;

[0021] Figure 3 This is a schematic diagram of the main structure of the aircraft propeller nut safety lock plate clamping device provided in this embodiment of the utility model;

[0022] Figure 4 This is a top cross-sectional view of the aircraft propeller nut safety lock plate clamping device provided in this embodiment of the utility model;

[0023] Figure 5 This is a schematic diagram of the hydraulic and electrical systems of the aircraft propeller nut safety lock plate clamping device provided in this embodiment of the utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Clamping component; 11. Push rod; 111. First clamping groove; 101. Clamping surface;

[0026] 2. Positioning component; 21. Retainer; 211. Second clamping groove; 212. Mounting groove; 213. Through hole;

[0027] 3. Driving components; 31. Hydraulic cylinders;

[0028] 4. Hydraulic system; 41. Hydraulic oil tank; 42. Hydraulic oil pump; 43. Pressure gauge; 44. First oil filter; 45. Second oil filter; 46. Check valve; 47. Unloading valve; 48. Electric steering valve;

[0029] 5. Electrical system; 51. Power supply; 52. Fuse; 53. Frequency converter; 54. Oil pump speed controller; 55. First voltage regulator; 56. Second voltage regulator; 57. Electrical temperature display and control; 58. Hydraulic temperature display and control; 59. First fan; 510. Second fan;

[0030] 6. Reversing switch; 7. Nut; 8. Safety lock plate. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0032] To address the technical problems of low clamping efficiency of safety lock plates, easy damage to lock plates, slip rings, and propeller blades, and incomplete fit at the root of the lock plate, resulting in a low safety factor, this utility model provides a safety lock plate clamping device for aircraft propeller nuts. This device can clamp the safety lock plate on the side of the nut, thereby fixing the nut's position and preventing nut loosening due to vibration during operation. It replaces the traditional method of manually clamping the safety lock plate by hammering, significantly improving work efficiency and reducing the risk of personal injury and component damage caused by improper operation.

[0033] Please see Figure 1 The aircraft propeller nut safety lock plate clamping device includes: a clamping component 1, a positioning component 2, and a driving component 3. The clamping component 1 has a clamping surface 101 that fits with one end of the nut 7. The clamping surface 101 is used to clamp the safety lock plate 8 on the nut 7 against the side of the nut 7 when it moves towards the nut 7. The positioning component 2 has a positioning end that is disposed opposite to the clamping surface 101. The positioning end is used to press against the side of the nut 7 away from the clamping component 1 to lock the position of the nut 7. The driving component 3 is connected to the clamping component 1 and is used to drive the clamping component 1 to move relative to the nut 7.

[0034] In this device, the clamping member 1 has a clamping surface 101 that fits with one end of the nut 7. The driving member 3 is connected to the clamping member 1 and can drive the clamping member 1 to move relative to the nut 7. It has a positioning end that is opposite to the clamping surface 101 and can lock the position of the nut 7 at the other end of the nut 7 to ensure that the nut 7 will not shift its position when subjected to external force. When the clamping surface 101 moves toward the nut 7, it can press the safety locking piece 8 on the nut 7 against the side of the nut 7, which realizes the fixation of the position of the nut 7 to prevent the nut from loosening due to vibration during use.

[0035] To secure the nut 7 in place, please refer to [link / reference]. Figures 1 to 4 In this embodiment, the clamping member 1 includes a push rod 11, the positioning member 2 includes a retainer 21, and the driving member 3 includes a hydraulic cylinder 31.

[0036] Specifically, the retainer 21 has a positioning cavity inside, which provides a precise installation position for the push rod 11 and can accommodate the nut 7 and part of the safety locking plate 8. Placing the push rod 11 in the positioning cavity ensures the stability and accuracy of operation. The end of the retainer 21 away from the push rod 11 forms a positioning end for pressing against the other side of the nut 7. A first clamping groove 111 is formed on one side of the push rod 11, which fits into the side of the nut 7. The groove wall of the first clamping groove 111 forms the pressing surface 101. When the push rod 11 moves toward the nut 7, its pressing surface 101 can contact the safety locking plate 8 on the nut 7, so as to press the safety locking plate 8 against the side of the nut 7.

[0037] The retainer 21 has a mounting groove 212 at one end away from the positioning end. A through hole 213 is also provided on the mounting groove 212 at a position corresponding to the clamping member 1. The hydraulic cylinder 31 is installed in the mounting groove 212, and its telescopic drive shaft passes through the through hole 213 and is fixedly connected to one end face of the push rod 11 away from the first pressing groove 111. This allows the hydraulic cylinder 31 to drive the push rod 11 to move relative to the positioning end of the positioning member 2, thereby enabling the clamping operation of the safety lock plate 8.

[0038] Furthermore, in some embodiments, the inner side of the positioning end of the retainer 21 is provided with a second abutment groove 211 that mates with the other side of the nut 7. This allows the second abutment groove 211 to engage with the other side of the nut 7 during the clamping operation, making the nut 7 more stable under pressure and facilitating precise clamping of the locking plate 8 onto the side of the nut 7. In addition, the second abutment groove 211 of the retainer 21 can also help to quickly and accurately position the nut 7, especially when precise angular alignment is required, thereby speeding up the installation process.

[0039] To control the hydraulic cylinder 31, please refer to [link / reference]. Figure 1 and Figure 5 In this embodiment, the aircraft propeller nut 7 safety locking plate 8 clamping device also includes a hydraulic system 4, an electrical system 5 and a working handle. The hydraulic system 4 is used to supply oil to the hydraulic cylinder 31, and the electrical system 5 is used to supply power to the hydraulic system 4.

[0040] Specifically, the hydraulic system 4 includes a hydraulic oil tank 41, a hydraulic oil pump 42, a pressure gauge 43, a first oil filter 44, a second oil filter 45, a check valve 46, an unloading valve 47, and an electric directional valve 48. The hydraulic oil tank 41 stores hydraulic oil and provides fluid to the system. The hydraulic oil pump 42 is driven by a motor and can draw hydraulic oil from the hydraulic oil tank 41, pressurize it, and deliver it to the system. The inlet of the hydraulic oil pump 42 is connected to the hydraulic oil tank 41, and its outlet is connected to the hydraulic cylinder 31 through the check valve 46 and the electric directional valve 48. The check valve 46 ensures that the oil can only flow in one direction and prevents backflow. The electric directional valve 48 controls the flow direction of the oil through an electronic control signal, realizing the extension, retraction, or rotation of the hydraulic cylinder 31. The hydraulic oil tank 41 is connected to the hydraulic cylinder 31. The pressure gauge 43 connects the first oil filter 44 and the second oil filter 45. The first oil filter 44 is connected to the pipeline from the hydraulic oil pump 42 to the check valve 46 via the unloading valve 47. The second oil filter 45 is connected to the electric steering valve 48. The first oil filter 44 and the second oil filter 45 are used to filter the hydraulic oil and keep the oil clean. The pressure gauge 43 is installed on the connecting pipeline between the unloading valve 47 and the check valve 46. The pressure gauge 43 is used to measure the pressure of the hydraulic system 4 to ensure that the system is within a safe working pressure range. The function of the unloading valve 47 is to automatically open when the system pressure exceeds the set value to release the excess pressure and protect the system. Finally, the mechanical movement of the hydraulic cylinder 31, such as extension, retraction, or rotation, is achieved by the pressure of the hydraulic oil.

[0041] The electrical system 5 includes a power supply 51, a fuse 52, a frequency converter 53, an oil pump speed regulator 54, a first voltage regulator 55, a second voltage regulator 56, an electrical temperature display and control 57, a hydraulic temperature display and control 58, a first fan 59, and a second fan 510. The power supply 51 provides power to the entire system and is connected to the fuse 52, the frequency converter 53, the first voltage regulator 55, and the second voltage regulator 56. The fuse 52 protects the circuit from overload or short circuit. The frequency converter 53 controls the motor speed by adjusting the output frequency. The first voltage regulator 55 and the second voltage regulator 56 ensure the voltage of the power supply 51 is stable, providing stable power to the system. The oil pump speed regulator... 54 connects to the frequency converter 53, which in turn connects to the hydraulic oil pump 42. The oil pump speed controller 54 controls the speed of the oil pump to ensure that the oil in the hydraulic system 4 flows at an appropriate speed. The first fan 59 and the second fan 510 are both connected to the electrical temperature display control 57 and the hydraulic temperature display control 58. The first fan 59 and the second fan 510 are used for heat dissipation to keep the system temperature within a safe range. The electrical temperature display control 57 and the hydraulic temperature display control 58 are used to display and control the temperature to ensure that the system operates within a suitable temperature range. The electrical temperature display control 57 and the hydraulic temperature display control 58 are both connected to the first voltage regulator 55 and the second voltage regulator 56.

[0042] Preferably, in this embodiment, the working handle is a reversing switch 6, which connects the hydraulic system 4 and the electrical system 5. It is used to control the operation of the hydraulic system 4. By operating the reversing switch 6, the state of the reversing electric steering valve 48 can be changed, thereby achieving precise control of the hydraulic cylinder 31.

[0043] Furthermore, in some embodiments, the hydraulic system 4 and the electrical system 5 are both integrated into a specific equipment box, which is divided into an electrical compartment and a hydraulic compartment by a partition. This is to ensure that in the event of oil leakage or pipe bursting in the hydraulic system 4, hydraulic oil will not enter the electrical compartment in large quantities, thus preventing short circuits. In addition, each compartment has an automatic temperature controller for heat dissipation, namely an electrical temperature display and control 57 and a first fan 59, and a hydraulic temperature display and control 58 and a second fan 510.

[0044] Working principle: During operation, DC power is supplied by a battery and converted into three-phase pulses by a frequency converter to drive the motor, which in turn drives the hydraulic oil pump 42. The output pulse width of the frequency converter is changed to adjust the speed of the oil pump and adjust the outlet pressure of the hydraulic oil pump 42. The unloading valve 47 ensures that the maximum pressure of the hydraulic oil pump 42 does not exceed the specified value, thereby achieving the extension and retraction adjustment of the hydraulic oil pump 42 to limit the maximum clamping force of the clamping element 1. The electric directional valve 48 changes the direction of pressure oil flow, thereby changing the movement direction of the clamping element 1. In the safety lock plate 8 clamping device, the hydraulic system 4 and the electrical system 5 serve as the power mechanism, and the working handle serves as the actuator. Precise positioning is achieved through the retainer 21. The extension and retraction of the extension and retraction drive shaft of the hydraulic cylinder 31 realizes the forward and backward movement of the push rod 11, which in turn pushes the safety pad to complete the clamping action.

[0045] This invention, by setting up a clamping component 1 and a driving component 3, allows the clamping component 1 to move accordingly when the driving component 3 is activated. As the clamping surface 101 moves toward the nut 7, it can press the safety locking plate 8 on the nut 7 against the side of the nut 7, thereby fixing the position of the nut 7. This avoids the problem of the nut loosening due to vibration during operation. This solution replaces the traditional method of manually pressing the safety locking plate, significantly improving work efficiency and reducing the risk of personal injury and component damage caused by improper operation.

[0046] This utility model uses a positioning element 2 to lock the position of the nut 7 at the end of the nut 7 away from the clamping element 1, ensuring that the nut 7 will not shift its position when subjected to external force, thereby improving the accuracy and efficiency of the clamping operation.

[0047] In the description of this application, it should be noted that the terms "upper" and "lower," etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0048] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0049] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A device for tightening a safety locking plate on an aircraft propeller nut, characterized in that, include: A clamping member having a clamping surface that engages with one end of a nut, the clamping surface being used to press a locking tab on the nut against the side of the nut when the nut is moved toward it. A positioning element having a positioning end disposed opposite to the clamping surface, the positioning end being used to abut against the side of the nut away from the clamping element to lock the position of the nut; and, A driving component, which is connected to the clamping component, is used to drive the clamping component to move relative to the nut.

2. The aircraft propeller nut safety locking plate clamping device according to claim 1, characterized in that, The clamping component includes a push rod, one side of which has a first clamping groove that fits with the side of the nut. The groove wall of the first clamping groove forms the clamping surface. When the push rod moves toward the nut, its clamping surface can contact the safety locking piece on the nut, so as to press the safety locking piece to the side of the nut.

3. The aircraft propeller nut safety locking plate clamping device according to claim 2, characterized in that, The positioning element includes a retainer, the retainer having a positioning cavity inside, the push rod being disposed in the positioning cavity, and the end of the retainer away from the push rod forming a positioning end for abutting against the other side of the nut.

4. The aircraft propeller nut safety locking plate clamping device according to claim 3, characterized in that, The inner side of the positioning end of the retainer is provided with a second clamping groove that matches the other side of the nut.

5. The aircraft propeller nut safety locking plate clamping device according to claim 4, characterized in that, The driving component includes a hydraulic cylinder, and the telescopic drive shaft of the hydraulic cylinder is connected to the clamping component to drive the clamping component to move relative to the positioning end of the positioning component.

6. The aircraft propeller nut safety locking plate clamping device according to claim 5, characterized in that, The retainer has a mounting groove at one end away from the positioning end. A through hole is also provided on the mounting groove at a position corresponding to the clamping member. The hydraulic cylinder is installed in the mounting groove, and its telescopic drive shaft passes through the through hole and is connected to the clamping member.

7. The aircraft propeller nut safety locking plate clamping device according to claim 5, characterized in that, The aircraft propeller nut safety locking device also includes a hydraulic system and an electrical system. The hydraulic system is used to supply oil to the hydraulic cylinder, and the electrical system is used to supply power to the hydraulic system.

8. The aircraft propeller nut safety locking plate clamping device according to claim 7, characterized in that, The hydraulic system includes a hydraulic oil tank, a hydraulic oil pump, a pressure gauge, a first oil filter, a second oil filter, a check valve, an unloading valve, and an electric directional valve. The inlet of the hydraulic oil pump is connected to the hydraulic oil tank, and its outlet is connected to the hydraulic cylinder through the check valve and the electric directional valve. The hydraulic oil tank is connected to the first oil filter and the second oil filter through the pressure gauge. The first oil filter is connected to the pipeline from the hydraulic oil pump to the check valve through the unloading valve. The second oil filter is connected to the electric directional valve. The pressure gauge is installed on the connecting pipeline between the unloading valve and the check valve.

9. The aircraft propeller nut safety locking plate clamping device according to claim 8, characterized in that, The electrical system includes a power supply, a fuse, a frequency converter, an oil pump speed controller, a first voltage regulator, a second voltage regulator, an electrical temperature display and control unit, a hydraulic temperature display and control unit, a first fan, and a second fan. The power supply is connected to the fuse, the frequency converter, the first voltage regulator, and the second voltage regulator. The oil pump speed controller is connected to the frequency converter, and the frequency converter is connected to the hydraulic oil pump. The first fan and the second fan are both connected to the electrical temperature display and control unit and the hydraulic temperature display and control unit, which are both connected to the first voltage regulator and the second voltage regulator.

10. The aircraft propeller nut safety locking plate clamping device according to claim 9, characterized in that, The aircraft propeller nut safety lock clamping device also includes a reversing switch, which connects the hydraulic system and the electrical system. The reversing switch is used to control the operation of the hydraulic system, thereby changing the state of the reversing electric steering valve and controlling the operation of the hydraulic cylinder.

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