KR20090066674A - Blade lift - Google Patents

Abstract

A blade lift for whirl tower test facility is provided to control vertical and horizontal angles of a blade mounting board to insert one end of the blade into a combining groove of a rotor hub. A blade lift for whirl tower test facility includes a lifting unit(20), a lower part seizure arm(50), a lower part seizure arm driver, and a supporting part(60). The lifting unit includes a blade platform loading a blade, a person platform on which working staffs ride, and a lower plate supporting the two platforms. The lower part seizure arm is attached to the bottom face of the lower plate to support the bottom end of the lifting unit. The lower part seizure arm driver vertically moves the lifting unit. The supporting part is fixed to one end of the bottom of the lower part seizure arm to support the lower part seizure arm and supports the loads of the lifting unit and the lower part seizure arm driver.

Description

Blade lift for testing equipment {Blade Lift}

The present invention relates to a blade lift for a test tower, and more specifically, to a top of a tower tower test facility, which is a structure for performing a performance test related to the rotation of a blade by mounting a blade of a helicopter. It relates to a blade lift for the tower used for lifting purposes.

In general, the tower test facility is an important test facility to check the operability, measure the performance, and check the stability of the blades that can be represented by the actual helicopter. And tracking and dynamic balancing.

1A and 1B are schematic views showing the structure of the test tower and the position where the blade lift 10 is installed.

1a and 1b, the tower test facility is a tower-shaped structure, the upper end is provided with a rotor hub (Rotor Hub) is coupled to the end of the blade (1) of the helicopter, the rotor hub (2) The lower end is provided with an upper work (5) stage equipped with a motor for rotating the rotor hub (2), the lower portion of the upper work table (5) is located in the lower part of the fixed tower (3) for supporting the load of the test equipment.

The lift 4 for elevating the conventional blade 1 rises to a height at which the rotor hub 2 on which the blade 1 is mounted is installed, and the blade 4 is driven by the frequency of the workforce located on the upper workbench. 1) is mounted to the rotor hub (2).

At this time, the blade 1 mounted on the lift 4 is pulled up to the rotor hub 2 so that the blade 1 is inserted into the insertion groove, which is a part in which the blade 1 of the rotor hub 2 is mounted. The insertion groove has a predetermined twist angle in the vertical and horizontal directions, and by lifting or lowering one end or the other end of the blade 1 by a work person when the blade 1 is fastened, the blade (according to the twist angle in the vertical direction) Adjust the inserted vertical angle of 1).

In addition, the horizontal angle of the insertion of the blade 1 can be adjusted by moving the end of the blade 1 to the left or the right to match the torsion angle of the insertion groove in the horizontal direction.

However, in order to adjust the vertical and horizontal direction of the work table is located on the upper workbench or the upper surface of the lift (4) to adjust both ends of the raceway blade (1), the height of the upper plate of the lift (4) is generally As it is about 10m from the ground, there is a fear of falling of the workforce.

In addition, the weight of one blade 1 varies depending on the type, but on average, the weight of the blade 1 is not enough for one or two workers to lift the blade 1, and the top of the lift 4 Because of the limited width of the wire, a problem arises that it is difficult for a circle of several workers to be located on the upper plate of the lift 4.

In addition, even if a worker lifts the blade 1 by frequency and adjusts the vertical and horizontal twist angles and inserts the blade 1 into the insertion groove, the blade 1 is fixed by a shaft such as a shaft for fixing the blade 1 to the insertion groove. This results in the inconvenience that the working personnel must hold the blade 1 continuously until) is firmly fixed.

The present invention was created in order to solve the above-mentioned problems, and unlike the existing lift for simply lifting the blade, the platform can be divided into two largely divided into a platform for lifting the blade platform and the lifting platform for the workforce, the personnel platform Is raised to the position of the upper workbench of the test rig, and the blade platform is further raised to the blade mount.

In addition, the mounting surface of the blade platform is provided to adjust the vertical and horizontal angle of the blade in accordance with the torsion angle of the rotor hub, to ensure the safety of the workforce and to facilitate the fastening of the blade.

Blade lift for the test tower of the present invention for achieving the above object, the blade platform for loading the blade and the personnel platform on which the working personnel are mounted and the blade platform and the platform is mounted on the lower surface of the platform for the two platforms An elevating portion including a lower plate for supporting; and a lower scissor arm mounted on a lower surface of the lower plate to support a lower portion of the elevating portion, and having two frames intersected in an X-shape and joined in a vertical direction. A lower scissor arm portion provided in a combined structure; and a lower portion of the lower scissor arm portion, the driving cylinders mounted on one side of the frame located at the lower portion of the lower scissor arm portion to be operated up and down, respectively, The lower scissor is provided to allow vertical movement of the elevating part by folding the scissor arm of the lifter. Driving; One end and one side of the lower end of the lower scissor arm part are fixedly coupled to support the lower scissor arm part, and includes a support part fixed to the ground to support the lifting portion and the lower scissor arm driver.

Here, a lower scissor arm is further provided with an upper scissor arm coupled with two frames crossed in an X shape and an upper scissor arm driver equipped with a driving cylinder on one side of the upper scissor arm. By folding the frame of the upper scissor arm, the blade platform can be characterized in that it is further liftable from the lower plate.

In addition, the blade platform, the upper scissor arm is supported by the upper scissor arm, a predetermined width in a predetermined width is formed on the upper plate and the upper plate formed on the upper surface of the upper plate, rotatable wheels Is attached to the lower surface is inserted into the lower end of the wheel is inserted into the predetermined groove is possible to move linearly, it may be characterized in that it further comprises a rolling plate provided in the center with a rotating part having a rotating shaft.

In addition, the blade platform, the upper end of the rolling plate, the end of the rotary shaft provided in the rotating part is provided to be fixed to the lower end rotatable by the rotational force of the rotating part, the center is a hemispherical groove formed bearing It may be characterized in that the housing further comprises a rotating plate mounted to the central portion.

In addition, the blade platform is located on the top of the rotating plate, the spherical bearing of the hemispherical shape is formed in a position corresponding to the bearing housing mounted on the rotating plate, the blade is provided so that the spherical bearing is interpolated in the spherical bearing housing Further comprising a plate, the upper surface of the rotating plate may be further provided with an elastic member having an elastic force and a drive with a built-in electric motor and screw to support the lower surface of the blade mounting plate.

Further, the blade platform, the support point of the blade mounting plate supported by the driver and the elastic member is raised or lowered by the up and down operation of the driver and the elastic force of the elastic member, the blade mounting around the spherical bearing It is preferable that the inclination angle of the upper surface of the plate is adjustable.

According to the inventor's blade tower for the tower test equipment,

First, the blade platform can be moved linearly to easily move the blade horizontally to the coupling groove of the rotor hub.

Second, since the vertical and horizontal angles of the blade mounting plate can be adjusted, one end of the blade can be inserted to easily match the torsion angle of the coupling groove of the rotor hub.

Third, there is an advantage that the safety of the working personnel is guaranteed because the blade movement and angle adjustment work by the number of working personnel can be replaced by a mechanical device to insert the blade into the coupling groove of the rotor hub.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the present specification and claims should not be construed as being limited to the ordinary or dictionary meanings, and the inventors should properly introduce the concept of terms in order to explain their own invention in the best way. Based on the principle that the definition can be made in a simple manner, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

First, the structure of the blade lift according to the embodiment of the present invention will be described.

2A and 2B are side and cross-sectional views illustrating a structure of a blade lift according to an embodiment of the present invention.

2A and 2B, the blade lift 10 according to the exemplary embodiment of the present invention includes a lifter 20, a lower scissor arm 50, a lower scissor arm driver 52, a support 60, and an upper scissor. And an arm 21 and an upper scissor arm driver 23a.

The elevating unit 20 is mounted on the blade platform 30 for loading the blades and the personnel platform 70 on which the working personnel board and the lower surfaces of the blade platform 30 and the personnel platform 70 for the two platforms. It includes a lower plate 22 for supporting.

Here, a pair of upper scissor arms 21 coupled with a frame intersecting in an X shape is provided at the lower end of the blade platform 30 so as to face each other, and one end of the upper scissor arm 21 is disposed on the lower plate 22. Is fixedly coupled to the upper surface of the blade platform 30 to support.

In addition, one end of the upper scissor arm driver 23a on which the driving cylinder 23b is mounted is fixedly coupled to one side of the upper surface of the lower plate 22, and the other end 23c of the upper scissor arm driver 23a is coupled. Is fixedly coupled to the upper end of one frame of the upper scissor arm 21 is folded each frame of the upper scissor arm 21 by the vertical operation of the drive cylinder (23b), so that the blade platform 30 The lower plate 22 is provided to be more riseable.

In this case, the upper scissor arm 21 is further increased in the lower plate 22 in consideration of the height of the frame provided in the upper scissor arm 21, the upper scissor arm 21 in the vertical direction It may be provided in a continuous coupled structure.

The blade platform 30 is positioned above the upper scissor arm 21 and is supported by the upper scissor arm 21, and has an upper plate having a predetermined groove 34 formed on the upper surface with a predetermined width. 31 is provided. Here, the predetermined groove 34 is interpolated so that the lower end of the wheel 37 to be described later is rotatable so that the blade platform 30 is linearly movable in the direction of the rotor hub 2, the wheel to be interpolated It is preferable that the width and depth of the groove are determined in consideration of the width and diameter of (37).

On the other hand, the blade platform 30 is located above the upper plate 31, the wheel 37 is mounted in a position corresponding to the predetermined groove 34, the rotating portion having a rotary shaft 36b ( 36a) is further provided with a rolling plate 32 is mounted to the center portion.

Here, the rolling plate 32 is a blade mounted on the top of the blade platform 30 by horizontally moving the blade platform 30 in the direction of the coupling groove of the rotor hub 2 located in the upper end of the test facility. It serves to be easily inserted into the coupling groove.

In addition, the horizontal length of the rolling plate 32 is so much that the length is determined in consideration of the length from the end of the upper workbench of the test facility to the rotor hub (2) by the horizontal movement of the rolling plate 32 of the blade It is preferable that the end is provided to be in contact with the rotor hub (2).

In addition, the blade platform 30, the upper end of the rotary shaft 36b of the rotary part 36a formed on the rolling plate 32 is formed on the rolling plate 32 is fixedly coupled to the lower end of the rotating force of the rotating unit 36a It further comprises a rotating plate 33 provided to be rotatable by.

The rotating unit 36a is provided with a built-in electric motor (not shown) to provide a rotational force, the worm (not shown) and the worm gear (not shown) are connected to the rotating shaft of the electric motor to reduce the rotational speed of the electric motor It is preferable to be provided so as to adjust the rotation angle of the rotating plate (33).

In addition, it is preferable that a predetermined wheel 38a is further provided on the lower surface of the rotating plate 33 so that the load of the rotating plate 33 can be supported and rotated.

 Here, the wheel shaft (38b) for fixing the predetermined wheel (38a) is provided to be able to rotate 360 ° so that the moving direction is variable according to the rotation of the rotary plate 33, the predetermined wheel (38a) The quantity of is preferably determined in consideration of the load of the blade platform 30 and the weight of the blade.

In addition, a bearing housing 42 having a groove formed in a hemisphere having a concave center is fixed to the central portion of the upper surface of the rotating plate 33, and an electric motor (not shown) and a screw (not shown) are built in one side of the upper surface. The actuators 43 and 46 and elastic members 44 and 45 having elastic force are further provided.

In addition, the blade platform 30 is mounted on the blade is formed on the top of the rotating plate 33 is formed with a hemispherical spherical bearing 41 in a position corresponding to the bearing housing 42 mounted on the rotating plate 33 The plate 40 is further provided.

The spherical bearing 41 is coupled to the bearing housing 42 so that the spherical bearing 41 is inserted into the bearing housing 42. It is fixed to the upper surface of the rotating plate 33, the other end is provided to support the lower surface of the blade mounting plate (40).

 The drivers 43 and 46 are provided with an electric motor and a screw, and are provided such that the rotating shaft and the screw of the electric motor are in contact with each other so that the screw is elevated according to the rotation of the rotating shaft.

The screw may be provided to be in contact with the support shaft being lifted, so that the support shaft is lifted together as the screw is lifted, but not limited thereto. By the operation of the support shaft of the driver may be provided to be elevated.

3 is a plan view illustrating a position where the drivers 43 and 46 and the elastic members 44 and 45 are installed on the rotating plate 33.

Referring to FIG. 3, two squares shown in the drawing represent the actuators 43 and 46, two small circles represent the positions of the elastic members 44 and 45, and a large large circle in the center represents the spherical bearing ( 41).

The drivers 43 and 46 and the elastic members 44 and 45 are positioned at the edges of the upper surface of the rotating plate 33, and the elastic members 44 are provided on the corresponding surfaces of the surfaces on which the drivers 43 and 46 are installed. , 45) is located.

Here, the blade mounting plate 40 supported by the drivers 43 and 46 and the elastic members 44 and 45 by the vertical operation of the drivers 43 and 46 and the elastic force of the elastic members 44 and 45. ) Is raised or lowered, it is preferable that the inclination of the upper surface of the blade mounting plate 40 around the spherical bearing 41 is adjustable.

On the other hand, the lower scissor arm 50 is mounted on the lower surface of the lower plate 22 to support the lower end of the lifting unit 20, the lower scissor arm coupled by the two frames are cross-shaped X ( 51a, 51b, 51c) are provided in a continuous structure coupled in the vertical direction.

Here, the lower scissor arm portion 50 is provided so that a pair face each other, one end of the lower scissor arm portion 50 is fixedly coupled to the lower surface of the lower plate 22, the other end of the support portion 60 It is fixedly coupled to the upper surface to support the lifting unit 20.

In addition, one end of the lower scissor arm driver 52 having the driving cylinder 53a mounted thereon is fixedly coupled to one side of the upper surface of the support part 60, and the other end of the lower scissor arm driver 52 is lower scissor. It is fixedly coupled to the upper end of one frame of the arm (51a) by folding each frame of the lower scissor arm portion 50 by the vertical operation of the drive cylinder (53a), the vertical vertical movement of the lifting unit 20 It is provided to enable.

At this time, the lower scissor arms (51a, 51b, 51c) is much lower from the ground in consideration of the height of the upper working table of the testing equipment and the length of the frame provided in the lower scissor arms (51a, 51b, 51c), The quantity of the scissor arm portions 51a, 51b, 51c coupled in the vertical direction of the scissor arm portion 50 is preferably determined.

In addition, the support part 60 is fixedly coupled to one side of the lower end portion and the upper surface of the lower scissor arm portion 50 to support the lower scissor arm portion 50, and the lifting portion 20 and the lower scissor arm portion 50. It is provided to be firmly fixed to the ground to support the load.

Next, a description will be given of the operation structure provided so that the inclination angle of the upper surface of the blade mounting plate 40 is adjustable.

4A to 4D are views illustrating an operation structure in which the inclination angle of the top surface of the blade mounting plate 40 according to the embodiment of the present invention is adjustable.

4A and 4B are views of the blade lift from the side. Referring to FIG. 4A, when the support shaft of the driver 43 formed on the rotating plate 33 is lowered and the support point of the driver 43 is lowered, The blade mounting plate 40 is tilted in the direction of the support point of the driver 43 with respect to the spherical bearing 41, so that the elastic member 45 provided on the corresponding surface of the driver 43 is elastically driven. The support point for supporting the blade mounting plate 40 is raised.

On the contrary, referring to FIG. 4B, when the support shaft of the driver 43 formed on the rotating plate 33 rises and the support point of the driver 43 rises, the blade mounting plate centers on the spherical bearing 41. 40 is inclined in the direction of the support point of the elastic member 45, the elastic member 45 provided on the corresponding surface of the driver 43 is pressed by the pressure lowered of the blade mounting plate 40 The support point of the elastic member 45 supporting the blade mounting plate 40 is lowered.

4C and 4D are views of the blade lift from the front. Referring to FIG. 4C, the support shaft of the driver 46 formed on the rotating plate 33 is lowered so that the support point of the driver 46 is lowered. When the blade mounting plate 40 is tilted toward the support point of the driver 46, the elastic member 44 provided on the corresponding surface of the driver 46 has an elastic force. As a result, a supporting point for supporting the blade mounting plate 40 is raised.

On the contrary, referring to FIG. 4D, when the support shaft of the driver 46 formed on the rotating plate 33 rises and the support point of the driver 46 rises, the blade mounting plate centers on the spherical bearing 41. 40 is inclined in the direction of the support point of the elastic member 44, the elastic member 44 provided on the corresponding surface of the driver 46 is pressed by the lowering pressure of the blade mounting plate 40 The support point of the elastic member 44 supporting the blade mounting plate 40 is lowered.

As described above, the blade mounting plate 40 is capable of adjusting the inclination angle according to the lifting and lowering operation of the drivers 43 and 46 and the elastic members 44 and 45 provided in the rotating plate 33, Each of the drivers 43 and 46 is capable of raising and lowering at the same time.

In addition, the blade platform 30 can be moved in the horizontal direction in accordance with the rotation of the wheels 37 mounted on the rolling plate 32, of the rotary shaft 36b fixedly coupled to the central portion of the rotating plate 33 Rotation in the horizontal direction is possible.

Next, a description will be given as a series of processes until the blade is mounted on the blade lift for the test facility and inserted into the coupling groove of the rotor hub 2.

The blade lift table 30 of the blade lift 10 for the test tower of the present invention is equipped with a blade to be mounted on the rotor hub 2, and the blade lift 10 with a working person on the lift platform 70 ) Is raised, so that the blade platform 30 and the personnel platform 70 at the same time up to the upper work platform (5) of the test facility.

In the upper workbench 5, the working people get off, and the blade platform 30 is further raised from the upper workbench 5 to rise to a height where the rotor hub 2 is installed at the upper end of the test facility. Here, the height of the blade is adjusted by the operation of the upper scissor arm driving unit 23a of the blade platform 30 on the basis of the height of the insertion groove portion of the rotor hub 2, the of the rotor hub 2 Match the height of the insertion groove and the blade.

In addition, the distance from the end of the blade mounted on the lift 10 to the insertion groove of the rotor hub 2, the wheel 37 provided on the rotating plate 33 of the blade platform 30, the upper plate ( It is overcome by horizontally moving along a predetermined groove 34 formed in the upper surface of 31.

In addition, the vertical and horizontal twist angles of the insertion grooves of the rotor hub 2 raise and lower the supporting points of the drivers 43 and 46 mounted on the upper surface of the rotating plate 33 as described above, so that the blade mounting plate By adjusting the inclination angle of 40, the horizontal and horizontal inclination angles of the blades are coincident so that the ends of the blades are inserted based on the vertical and horizontal twist angles of the insertion groove portion.

In addition, the rolling plate 32 is further horizontally moved in the direction of the rotor hub 2 while maintaining the coincident vertical and horizontal tilt angles so that the end of the blade is inserted into the insertion groove of the rotor hub 2. do.

As described above, although the present invention has been described by way of limited embodiments and drawings, the present invention is not limited thereto and is intended by those skilled in the art to which the present invention pertains. Of course, various modifications and variations are possible within the scope of equivalents of the claims to be described.

Figure 1a is a schematic diagram showing the structure of the tower test facility,

Figure 1b is a schematic diagram showing the position where the blade lift is installed,

2a and 2b is a side view and a front view showing the structure of the blade lift according to an embodiment of the present invention,

3 is a plan view showing a position where the driver and the elastic member is installed in the rotating plate according to an embodiment of the present invention,

4A and 4D are side and front views illustrating an operating structure provided so that the inclination angle of the top surface of the blade mounting plate according to the embodiment of the present invention is adjustable.

<Explanation of symbols for the main parts of the drawings>

10 ... Blade lift 20 ... Elevation

22.Lower plate 30 ... Blade platform

31.Top plate 32 ... Cloud plate

33.Swivel plate 40 ... Blade mount plate

50 Lower part Lower arm 60 Support part

Claims (5)

A lift unit including a blade lift platform for loading a blade and a work platform for a workforce, and a lower plate mounted on the lower surface of the blade lift platform and the lift platform to support the two lift platforms; and A lower scissor arm portion mounted on a lower surface of the lower plate and supporting a lower end portion of the lifting portion, the lower scissor arm portion having a structure in which two frames cross each other in an X-shape and are coupled to each other in a vertical direction;  Located in the lower portion of the lower scissor arm portion, by operating the drive cylinder mounted on one side of the frame located in the lower portion of the lower scissor arm portion up and down, each of the scissor arm provided in the lower scissor arm portion is folded, thereby the upper and lower A lower scissor arm driver provided to enable vertical movement; And One end and one side of the lower end of the lower scissor arm is fixedly coupled to support the lower scissor arm, and includes a support fixed to the ground so as to support the lifting portion and the lower scissor arm driver. The lower stage of the blade platform is further provided with an upper scissor arm coupled with two frames intersected in an X-shape and an upper scissor arm driver equipped with a driving cylinder on one side of the upper scissor arm. The blade lifter for the tower, characterized in that the frame of the upper scissor arm is folded, so that the blade platform is more liftable from the lower plate. The method of claim 1, The blade platform, An upper plate positioned on the upper scissor arm and supported by the upper scissor arm, and having a predetermined width at a predetermined width on the upper plate; Located on top of the upper plate, the rotatable wheel is mounted on the lower surface so that one side of the wheel is interpolated into the predetermined groove to move linearly, further comprising a rolling plate provided with a rotating part having a rotating shaft in the center Blade lift for the tower, characterized in that provided. The method of claim 2, The blade platform, Located in the upper part of the rolling plate, the end of the rotary shaft provided in the rotating part is fixedly coupled to the lower end is provided to be rotatable by the rotational force of the rotating part, the center is a hemisphere bearing housing with a concave groove is formed in the center of the rotating plate Blade lift for the tower characterized in that it is provided further comprising. The method of claim 3, wherein The blade platform, Located on the top of the rotating plate, the spherical bearing is formed in a position corresponding to the bearing housing mounted on the rotating plate, the spherical bearing further comprises a blade mounting plate interpolated into the spherical bearing housing,  Blade lifter for the tower, characterized in that the upper surface of the rotating plate is further provided with an elastic member having an elastic force and a drive with a built-in electric motor and screw to support the lower surface of the blade mounting plate. The method of claim 4, wherein The blade platform, By the up and down operation of the driver and the elastic force of the elastic member, the support points of the blade mounting plate supported by the driver and the elastic member are raised or lowered, so that the inclination angle of the upper surface of the blade mounting plate is centered around the spherical bearing. Blade lift for the tower, characterized in that adjustable.

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