Auxiliary fixing and precise dismounting and mounting device for helicopter rotor wing

Abstract

An auxiliary fixing and precise dismounting device for a helicopter rotor relates to the technical field of helicopter modification and maintenance tools, and is characterized in that a longitudinal driving mechanism drives a cross beam to move upwards until two ends of the helicopter rotor to be fixed or dismounted are placed in arc-shaped grooves I of corresponding support blocks on the same side; due to the fact that the helicopter rotor wing is supported by the two supporting blocks, the helicopter rotor wing does not shake, in the dismantling process, the rotor wing does not bend and twist to cause deviation, and cracks and abrasion of the root of the rotor wing are avoided. After the pressing plate is fixed to the supporting block, the whole cross beam is driven by the longitudinal driving device to move downwards, the helicopter rotor is moved to the lower portion, inspection and maintenance are facilitated, due to the fact that the pressing plate and the supporting block are matched to press and fix the helicopter rotor, the helicopter rotor is effectively prevented from falling off when moving downwards, and operation safety is improved. The same effect is achieved when the rotor wings are installed.

Description

Technical Field

[0001] The utility model relates to the technical field of helicopter modification and maintenance tools, and in particular to a helicopter rotor auxiliary fixing and precise disassembly and assembly device. Background Art

[0002] With the development of the economy, helicopters are being used more and more widely, and the number of helicopters is increasing. After a helicopter has been used for a certain period of time or has flown a certain number of times, the rotor needs to be removed for inspection or when undergoing certain modifications, the rotor needs to be fixed to prevent it from rotating. When removing the rotor, at least four people are required to do it at the same time to ensure that the rotor does not deform significantly; during installation, due to the very high precision requirements, the installation is very time-consuming, and four people need to maintain sufficient tacit understanding to install it in place. If there is a deviation, cracks and wear may occur at the root of the rotor, seriously affecting the service life of the rotor. Summary of the invention

[0003] In order to overcome the deficiencies of the above technologies, the utility model provides a helicopter rotor auxiliary fixing and precise disassembly device which solves the deviation during the fixing and disassembly of the helicopter rotor and improves the fixing and disassembly efficiency.

[0004] The technical solution adopted by the utility model to overcome the technical problems is:

[0005] A helicopter rotor auxiliary fixing and precise disassembly and assembly device, comprising:

[0006] A chassis, an upper end of which is provided with a crossbeam, the crossbeam being arranged horizontally in the left-right direction;

[0007] A longitudinal driving device is arranged on the chassis and is used to drive the crossbeam to move up and down in the vertical direction;

[0008] Two support blocks are fixed to the left and right ends of the crossbeam through a connecting mechanism, and an arc groove I is provided at the upper end of the support block, and the arc groove I matches the arc surface of the lower end of the helicopter rotor; and

[0009] A pressure plate, wherein an arc groove II is arranged at the lower end of the pressure plate, and the arc groove II matches the arc surface of the upper end of the helicopter rotor. When the helicopter rotor is placed in the arc groove I of the support block, the pressure plate is fixed to the upper end of the support block by screws I, and the helicopter rotor is clamped and fixed between the arc groove I and the arc groove II.

[0010] In order to facilitate movement, universal wheels are respectively installed at the four corners of the lower end of the chassis.

[0011] Furthermore, the above-mentioned longitudinal driving device includes two monkey climbing bar jacks, which are installed on the chassis in the vertical direction, and the left and right ends of the crossbeam are respectively installed on the sliders of the corresponding monkey climbing bar jacks on the same side.

[0012] Furthermore, the above-mentioned connecting mechanism includes a support plate arranged on the crossbeam, the support plate extends horizontally toward the front side relative to the crossbeam, and the support block is fixed to the support plate by screw II.

[0013] In order to improve the strength, a plurality of ribs are arranged between the support plate and the cross beam.

[0014] The beneficial effect of the utility model is as follows: the crossbeam is driven to move upward by the longitudinal drive mechanism until the two ends of the helicopter rotor to be fixed or removed are placed in the arc groove I of the corresponding support block on the same side. Since the helicopter rotor is held up by two support blocks, the helicopter rotor will not shake, and during the removal process, the rotor will not bend and twist to cause deviation, and will not cause cracks and wear at its root. After that, the pressure plate is fixed on the support block and the entire crossbeam is driven downward by the longitudinal drive device to move the helicopter rotor downward for easy inspection and maintenance. Since the pressure plate cooperates with the support block to press and fix the helicopter rotor, it effectively prevents the helicopter rotor from falling off when it moves downward, thereby improving the safety of operation. The same effect is achieved when installing the rotor. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the use state of the utility model;

[0016] Figure 2 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 3 for Figure 2 A magnified structural diagram of part A;

[0018] In the figure, 1. chassis 2. universal wheel 3. monkey pole jack 4. slider 5. helicopter rotor 6. support block 7. pressure plate 8. screw Ⅰ 9. cross beam 10. support plate 11. arc groove Ⅰ 12. screw Ⅱ 13. rib plate. DETAILED DESCRIPTION

[0019] The following is combined with Figure 1 To Attachment Figure 3 The utility model is further described.

[0020] A helicopter rotor auxiliary fixing and precise disassembly and assembly device comprises: a chassis 1, a crossbeam 9 is arranged at the upper end thereof, and the crossbeam 9 is arranged horizontally in the left-right direction; a longitudinal drive device is arranged on the chassis 1, and is used to drive the crossbeam 9 to move up and down in the vertical direction; two support blocks 6 are fixed to the left and right ends of the crossbeam 9 through a connecting mechanism, and an arc groove Ⅰ11 is arranged at the upper end of the support block 6, and the arc groove Ⅰ11 matches the arc surface of the lower end of the helicopter rotor 5; and a pressure plate 7, and an arc groove Ⅱ is arranged at the lower end of the pressure plate 7, and the arc groove Ⅱ matches the arc surface of the upper end of the helicopter rotor 5. When the helicopter rotor 5 is placed in the arc groove Ⅰ11 of the support block 6, the pressure plate 7 is fixed to the upper end of the support block 6 by screws Ⅰ8, and the helicopter rotor 5 is clamped and fixed between the arc groove Ⅰ11 and the arc groove Ⅱ. If the helicopter rotor 5 needs to be removed, the entire auxiliary device is moved to the helicopter, and the crossbeam 9 is driven upward by the longitudinal drive mechanism until the two ends of the helicopter rotor 5 to be removed are placed in the arc groove Ⅰ 11 of the corresponding support block 6 on the same side. At this time, the bolts at the connection between the helicopter rotor 5 and the helicopter shaft are removed. Since the helicopter rotor 5 is supported by two support blocks 6, the helicopter rotor 5 will not shake, and during the removal process, the rotor will not bend and twist to cause deviation, and will not cause cracks and wear at its root. After that, the pressure plate 7 is fixed on the support block 6, and the entire crossbeam 9 is driven downward by the longitudinal drive device to move the helicopter rotor 5 to the bottom, which is convenient for inspection and maintenance. Since the pressure plate 7 cooperates with the support block 6 to press and fix the helicopter rotor 5, it effectively prevents the helicopter rotor 5 from falling off when it moves downward, thereby improving the safety of operation. The same effect is achieved when installing the rotor.

[0021] In one embodiment of the utility model, universal wheels 2 are respectively installed at the four corners of the lower end of the chassis 1. The chassis 1 can move freely through the universal wheels 2, which facilitates the movement of the entire helicopter rotor auxiliary fixing and precise disassembly and assembly device to the construction position, further improving the convenience of use.

[0022] In one embodiment of the utility model, the longitudinal driving device includes two monkey climbing bar jacks 3, which are installed on the chassis 1 in the vertical direction, and the left and right ends of the cross beam 9 are respectively installed on the sliders 4 of the corresponding monkey climbing bar jacks 3 on the same side. The monkey climbing bar jack 3 is a standard component available on the market. By continuously pressing the operating rod of the monkey climbing bar jack 3, the slider 4 of the monkey climbing bar jack 3 can be driven to move gradually upward, thereby driving the cross beam 9 to move upward.

[0023] In one embodiment of the utility model, the connecting mechanism includes a support plate 10 arranged on the cross beam 9, the support plate 10 extends horizontally toward the front side relative to the cross beam 9, and the support block 6 is fixed to the support plate 10 by screws II 12. The support block 6 is fixed by the support plate 10. The structure is simple, and it is convenient to manufacture support blocks 6 of different corresponding specifications according to the shapes of helicopter rotors 5 of different specifications, thereby improving the efficiency of installation and disassembly when replacing the support block 6.

[0024] In one embodiment of the utility model, a plurality of ribs 13 are provided between the support plate 10 and the cross beam 9. By providing the ribs 13 between the support plate 10 and the cross beam 9, the strength of the connection between the support plate 10 and the cross beam 9 is improved, and the reliability of use is improved.

[0025] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A helicopter rotor auxiliary fixing and precise disassembly device, characterized in that: include: A chassis (1) having a crossbeam (9) disposed at its upper end, the crossbeam (9) being arranged horizontally in the left-right direction; A longitudinal driving device, arranged on the chassis (1) and used for driving the crossbeam (9) to move up and down in a vertical direction; Two support blocks (6) are fixed to the left and right ends of the crossbeam (9) through a connecting mechanism, and an arc groove I (11) is provided at the upper end of the support block (6), and the arc groove I (11) matches the arc surface at the lower end of the helicopter rotor (5); and A pressure plate (7), wherein the lower end of the pressure plate (7) is provided with an arc groove II, wherein the arc groove II matches the arc surface of the upper end of the helicopter rotor (5), and when the helicopter rotor (5) is placed in the arc groove I (11) of the support block (6), the pressure plate (7) is fixed to the upper end of the support block (6) by means of screws I (8), and the helicopter rotor (5) is clamped and fixed between the arc groove I (11) and the arc groove II.

2. The helicopter rotor auxiliary fixing and precise disassembly device according to claim 1, characterized in that: Universal wheels (2) are respectively installed at the four corners of the lower end of the chassis (1).

3. The helicopter rotor auxiliary fixing and precise disassembly device according to claim 1, characterized in that: The longitudinal drive device comprises two monkey climbing bar jacks (3), the two monkey climbing bar jacks (3) are mounted on the chassis (1) in the vertical direction, and the left and right ends of the crossbeam (9) are respectively mounted on the sliders (4) of the corresponding monkey climbing bar jacks (3) on the same side.

4. The helicopter rotor auxiliary fixing and precise disassembly device according to claim 1, characterized in that: The connection mechanism comprises a support plate (10) arranged on the crossbeam (9), the support plate (10) extending horizontally toward the front side relative to the crossbeam (9), and the support block (6) is fixed to the support plate (10) by means of screws II (12).

5. The helicopter rotor auxiliary fixing and precise disassembly device according to claim 4, characterized in that: A plurality of rib plates (13) are arranged between the support plate (10) and the crossbeam (9).

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