Positioning device of paddle

Abstract

The utility model discloses a blade positioning device, which relates to the technical field of blade moment measurement, and comprises a moving frame, a lifting mechanism and at least one backup plate group, and each backup plate group comprises a plurality of backup plates; the movable frame can move; the lifting mechanism is fixedly arranged on the movable frame; a backup plate is arranged at the lifting end of the lifting mechanism; each backup plate is detachably arranged at the lifting end of the lifting mechanism; the upper end of the backup plate is provided with a fitting surface; when the binding face of the backup plate is attached to the working face, with the inspection section position, of the paddle, the paddle is in a corresponding posture at a certain specified angle. By adopting the backup plate corresponding to the postures of the blade at different specified angles, the posture of the blade can better meet the design specification requirement, so that the posture adjustment operation of the blade at the specified angle is simpler, more convenient and more accurate, and accurate positioning of the posture of the blade is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of blade torque measurement, in particular to a positioning device for a blade. Background Technique

[0002] A propeller mainly consists of two major parts: a blade and a hub. In order to eliminate the vibration generated during the rotation of the propeller, that is, the asymmetry of the force of the propeller, the entire propeller needs to be balanced. The prerequisite for the balance of the entire propeller depends on the torque balance of the blade. Therefore, the balance of the blade plays a crucial role in the balance of the propeller.

[0003] In order to ensure the balance of the entire blade, it is first necessary to accurately measure the blade torque. The measurement of the blade torque includes the torque of the major axis and the torque of the minor axis, both of which are carried out on a special torque balance machine for the blade. Among them, the measurement of the torque of the minor axis needs to be carried out under three specified angular states at a certain fixed position (inspection section) of the blade. The angle is the inspection angle. The inspection angle is defined as the angle between the chord line of the blade corresponding to the inspection section (the line connecting the leading edge point and the trailing edge point of the inspection section) and the projection line of the plane perpendicular to the rotation axis of the propeller on the inspection section in the plane where the inspection section is located, as Figure 4 shown.

[0004] By measuring the inspection angle, the blade is corrected to correspond to three specified angular states respectively. When measuring the existing blade torque, after the blade is installed on the torque balance machine, the width direction of the blade is in an inclined posture (that is, the orientation of the working surface of the blade is in an inclined upward posture). One side of a universal bevel protractor is attached to the inspection section of the blade, and its angle is measured (as Figure 5 shown); in order to ensure the convenience of angle positioning and the consistency of measurement, and make the torque measurement operation convenient and fast, the selected measurement method is that the working surface of the inspection section faces upward (that is, the orientation of the working surface of the blade is inclined upward), and the angle between the inspection section and the vertical plane positioned by the universal bevel protractor is regarded as the inspection angle, rather than the angle between the projection line of the plane perpendicular to the rotation axis of the propeller on the inspection section as specified. Although it does not affect the measurement result, it does not meet the design specifications; and for the positioning of the three specified angular states of the blade, the operation is not convenient. Content of the Utility Model

[0005] The purpose of the utility model is to provide a positioning device for a blade to solve the problems existing in the above-mentioned prior art, so that the posture of the blade better meets the requirements of the design specifications, facilitates the adjustment of each position of the blade, and is convenient for the positioning of the blade.

[0006] To achieve the above purpose, the utility model provides the following scheme:

[0007] The present utility model provides a positioning device for a blade, which includes a moving frame, a lifting mechanism, and at least one set of abutting plates; each set of abutting plates includes a plurality of abutting plates; the moving frame can move in position; the lifting mechanism is fixedly arranged on the moving frame; one of the abutting plates is arranged on the lifting end of the lifting mechanism; each of the abutting plates is detachably arranged on the lifting end of the lifting mechanism; the upper end of the abutting plate has a fitting surface; when the fitting surface of the abutting plate is fitted with the working surface of the blade at the inspection section position, the blade is in the corresponding posture at a certain specified angle.

[0008] Preferably, a base is fixedly arranged on the lifting end of the lifting mechanism, and the lifting end of the lifting mechanism can drive the base to lift in the vertical direction; a chute is arranged on the base, and a sliding block is fixedly arranged at the lower end of the abutting plate; the sliding block is slidably arranged in the chute in the horizontal direction.

[0009] Preferably, the lifting mechanism includes a platform, a lifter, and at least one guiding component; the platform is fixedly arranged on the moving frame; the lifter is fixedly arranged on the platform, and the lifting end of the lifter is connected to the base; the guiding component includes a guide sleeve and a guide post, the guide sleeve is fixedly arranged on the platform; the guide post is slidably penetrated through the guide sleeve in the vertical direction; the upper end of the guide post is fixedly connected to the base.

[0010] Preferably, the lifter includes a threaded sleeve and a rotating screw; the threaded sleeve is fixedly arranged on the platform, and the threaded end of the rotating screw is threadedly connected in the threaded sleeve; the axis of the threaded sleeve coincides with the axis of the rotating screw, and both are parallel to the vertical direction; the upper end of the rotating screw abuts against the lower end surface of the base.

[0011] Preferably, a through hole is arranged on the side wall of the rotating screw near the base, and a rotating rod is penetrated through the through hole.

[0012] Preferably, the sliding block and the abutting plate are detachably connected together.

[0013] Preferably, a plurality of rotating wheels are arranged at the lower end of the moving frame.

[0014] Preferably, a locking device is arranged on at least one of the rotating wheels.

[0015] The present utility model has achieved the following technical effects compared with the prior art:

[0016] The positioning device for a blade provided by the present utility model makes the posture of the blade more meet the requirements of the design specification by adopting the abutting plates corresponding to the postures of the blade at different specified angles, so that the operation of adjusting the posture of the blade at the specified angle is simpler, more convenient, and more accurate, facilitating the precise positioning of the blade posture.

[0017] Furthermore, the sliding fit between the sliding groove on the base and the slider at the lower end of the backrest enables the backrest to slide left and right in the horizontal direction. Combined with the movement of the moving frame and the lifting of the lifting mechanism, the fitting surface of the backrest can better fit the corresponding inspection section on the working surface of the blade, thereby ensuring more accurate attitude positioning of the blade at this inspection angle.

[0018] Furthermore, the lifting mechanism adopts a combination of a lifter and a guiding component, which can make the lifting of the base more stable and reliable.

[0019] Furthermore, the lifter adopts a way of a threaded sleeve and a rotating screw rod, which has a simple structure and can support the base to lift more stably.

[0020] Furthermore, the way of the through hole cooperating with the rotating rod enables the operator to lift the base only by rotating the rotating rod when lifting the base. Its operation is simple and convenient; and the rotating rod can provide a certain lever arm distance, thereby reducing the applied rotating driving force and making it easier to rotate, reducing the labor intensity of the operator.

[0021] Furthermore, the slider and the backrest are detachably connected, which can reduce the self-weight of the backrest; when in use, multiple backrests can cooperate with one slider, reducing the labor intensity of the operator when taking and placing the backrest when replacing the backrest, and making it more flexible and portable.

[0022] Furthermore, the setting of the rotating wheel makes the movement of the moving frame more flexible and convenient.

[0023] Furthermore, the locking device on the rotating wheel can fix the relative position of the moving frame to ensure the stability of the backrest. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0025] Figure 1 It is a schematic diagram of the overall structure of the blade positioning device provided by the present invention;

[0026] Figure 2 It is a schematic diagram of the backrest structure corresponding to the second attitude of the blade in the blade positioning device provided by the present invention;

[0027] Figure 3 It is a schematic diagram of the backrest structure corresponding to the third attitude of the blade in the blade positioning device provided by the present invention;

[0028] Figure 4 It is a schematic diagram of the inspection angle where the inspection section of a blade is convex outward;

[0029] Figure 5 Based on Figure 4 The structure is a schematic diagram of the measurement using an existing universal bevel protractor;

[0030] Figure 6 It is a schematic diagram of the positioning device for the blade provided by the present utility model in cooperation with the blade.

[0031] In the figure:

[0032] 100 - Positioning device for the blade;

[0033] 10 - Moving frame; 11 - Rotating wheel;

[0034] 20 - Lifting mechanism; 21 - Platform; 22 - Lifter; 221 - Threaded sleeve; 222 - Rotating screw; 223 - Rotating rod; 23 - Guide assembly; 231 - Guide sleeve; 232 - Guide post; 24 - Base;

[0035] 30 - Backing plate; 31 - Fitting surface; 32 - Slide block. Specific embodiments

[0036] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0037] The purpose of the present utility model is to provide a positioning device and a usage method for a blade, so as to solve the problems existing in the prior art, make the attitude of the blade more meet the design specification requirements, facilitate the adjustment of each position of the blade, and facilitate the positioning of the blade.

[0038] To make the above - mentioned purposes, features, and advantages of the present utility model more obvious and understandable, the present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0039] Embodiment 1

[0040] This embodiment provides a positioning device 100 for a blade, mainly but not limited to being used for the small - axis torque test of the blade, such as Figures 1 to 4 and Figure 6As shown, it includes a moving frame 10, a lifting mechanism 20, and at least one set of backing plates 30. Each set of backing plates 30 includes a plurality of backing plates 30; the moving frame 10 can move its position; the lifting mechanism 20 is fixedly arranged on the moving frame 10; one backing plate 30 is arranged on the lifting end of the lifting mechanism 20; each backing plate 30 can be detachably arranged on the lifting end of the lifting mechanism 20; the upper end of the backing plate 30 has a fitting surface 31; when the fitting surface 31 of the backing plate 30 fits with the working surface of the blade at the inspection section position, the blade is in the corresponding posture at a certain specified angle. By using the backing plates 30 corresponding to different specified angles of the blade, the posture of the blade better meets the requirements of the design specifications, so that the operation of adjusting the posture of the blade at the specified angle is simpler, more convenient, and more accurate, facilitating the precise positioning of the blade posture.

[0041] Among them, regarding the related structure description of the moving frame 10:

[0042] Specifically, the moving frame 10 is of a frame structure, and the specific shape of the frame structure can be any one.

[0043] In an alternative embodiment of the present invention, preferably, as Figure 1 shown, a plurality of rotating wheels 11 are arranged at the lower end of the moving frame 10. The arrangement of the rotating wheels 11 makes the movement of the moving frame 10 more flexible and convenient.

[0044] Specifically, the rotating wheels 11 can be omnidirectional rotation or a rolling structure that conventionally supports single-direction movement.

[0045] In an alternative embodiment of the present invention, preferably, a locking device is arranged on at least one of the rotating wheels 11. The locking device on the rotating wheel 11 can fix the relative position of the moving frame 10 to ensure the stability of the backing plate 30.

[0046] Specifically, the locking device on the rotating wheel 11 is a conventional design, and it is only used to lock the rotation of the rotating wheel 11, so it will not be elaborated here.

[0047] Specifically, a plurality of rotating wheels 11 can be arranged below the moving frame 10, such as three or four or more, etc. The number and position of their arrangements can be set according to actual needs, and the number of rotating wheels 11 provided with the locking device can also be selected and set according to the actual situation.

[0048] Among them, regarding the related structure description of the lifting mechanism 20:

[0049] In an alternative embodiment of the present invention, preferably, as Figure 1As shown in the figure, the lifting mechanism 20 includes a platform 21, a lifter 22, and at least one guiding component 23; the platform 21 is fixedly arranged on the moving frame 10; the lifter 22 is fixedly arranged on the platform 21, and the lifting end of the lifter 22 is connected to the base 24; the guiding component 23 includes a guide sleeve 231 and a guide post 232, the guide sleeve 231 is fixedly arranged on the platform 21; the guide post 232 is slidably inserted into the guide sleeve 231 in the vertical direction; the upper end of the guide post 232 is fixedly connected to the base 24. The lifting mechanism 20 adopts the cooperation of the lifter 22 and the guiding component 23, which can make the lifting of the base 24 more stable and reliable.

[0050] Specifically, the lifter 22 can be any existing device or apparatus capable of realizing the lifting of the base 24, including but not limited to the following lifting structure composed of a threaded sleeve 221 and a rotating screw 222, etc.

[0051] In an alternative embodiment of the present invention, preferably, as Figure 1 shown in the figure, the lifter 22 includes a threaded sleeve 221 and a rotating screw 222; the threaded sleeve 221 is fixedly arranged on the platform 21, and the threaded end of the rotating screw 222 is threadedly connected to the threaded sleeve 221; the axis of the threaded sleeve 221 coincides with the axis of the rotating screw 222, and both are parallel to the vertical direction; the upper end of the rotating screw 222 abuts against the lower end surface of the base 24. The lifter 22 adopts the structure of the threaded sleeve 221 and the rotating screw 222, and its structure is simple, which can support the base 24 to lift more stably.

[0052] In an alternative embodiment of the present invention, preferably, as Figure 1 shown in the figure, a through hole is provided on the side wall of one end of the rotating screw 222 close to the base 24, and a rotating rod 223 is inserted into the through hole. The cooperation of the through hole and the rotating rod 223 enables the operator to only need to rotate the rotating rod 223 when lifting the base 24, and its operation is simple and convenient; and the rotating rod 223 can provide a certain lever arm distance, thereby reducing the applied rotational driving force, making it easier to rotate and reducing the labor intensity of the operator.

[0053] Among them, the relevant description of the backing plate 30:

[0054] Specifically, there are multiple groups of backing plates 30 used in cooperation, and each group of backing plates 30 includes multiple backing plates 30; each group of backing plates 30 corresponds to different inspection sections on the blade; the multiple backing plates 30 of each group of backing plates 30 respectively correspond to the corresponding postures at multiple different inspection angles at a certain fixed inspection section of the blade.

[0055] Specifically, the number of each group of backing plates 30 can be three, or can be set according to actual needs.

[0056] Specifically, the fitting surface 31 on the backing plate 30 fits against the outer wall of the working surface at the inspection section of the blade; specifically, the length of the fitting surface 31 on the backing plate 30 is not greater than the width of the working surface of the blade at the corresponding inspection section, as Figures 1 to 3 shown in

[0057] wherein, the connection structure between the lifting mechanism 20 and the backing plate 30 is described as follows:

[0058] In an alternative embodiment of the present invention, preferably, as Figure 1 shown, a base 24 is fixedly provided on the lifting end of the lifting mechanism 20, and the lifting end of the lifting mechanism 20 can drive the base 24 to lift in the vertical direction; a chute is provided on the base 24, and a slider 32 is fixedly provided at the lower end of the backing plate 30; the slider 32 is slidably arranged in the chute in the horizontal direction. The sliding fit between the chute on the base 24 and the slider 32 at the lower end of the backing plate 30 enables the backing plate 30 to slide left and right in the horizontal direction. In combination with the movement of the moving frame 10 and the lifting of the lifting mechanism 20, the fitting surface 31 of the backing plate 30 can better fit against the corresponding inspection section on the working surface of the blade, thereby ensuring more accurate attitude positioning of the blade at this inspection angle.

[0059] In an alternative embodiment of the present invention, preferably, as Figure 1 shown, the slider 32 and the backing plate 30 are detachably connected together. By adopting the detachable connection between the slider 32 and the backing plate 30, the self-weight of the backing plate 30 can be reduced; during use, multiple backing plates 30 can cooperate with one slider 32, reducing the labor intensity of the operator when handling the backing plate 30 during replacement, making it more flexible and lightweight.

[0060] Specifically, a plurality of mounting holes are formed at the lower end of the backing plate 30, and a plurality of internal threaded holes are formed at the corresponding positions on the slider 32. The backing plate 30 is fixedly connected to the slider 32 by sequentially passing a plurality of bolts through one mounting hole and threading them into one internal threaded hole.

[0061] wherein, other related descriptions are as follows:

[0062] Specifically, the rotating wheel 11 provided below the moving frame 10 can be universally rotated or only support the moving frame 10 to move in a single direction:

[0063] When the rotating wheel 11 can be universally rotated, the rough positioning of the backing plate 30 can be achieved through the moving frame 10, and then the precise positioning of the backing plate 30 can be fine-tuned through the cooperation of the lifting mechanism 20 and the chute and the slider 32.

[0064] When the rotating wheel 11 only supports the one-way movement of the moving frame 10, the whole can realize the separate movements of the backing plate 30 on three axes: ① the movement of the backing plate 30 in the X direction (realized by the movement of the rotating wheel 11 supporting the moving frame 10 in the X direction); ② the movement of the backing plate 30 in the Y direction (realized by the lifting action of the lifting mechanism 20); ③ the movement of the backing plate 30 in the Y direction (realized by the sliding of the sliding groove on the base 24 cooperating with the slider 32 at the lower end of the backing plate 30). At this time, after the locking device on the moving frame 10 locks the rotating wheel 11, the movement of the backing plate 30 in the X direction can be restricted to ensure the alignment degree of the backing plate 30 in the X direction, so that the backing plate 30 only needs to adjust its positions in the Y direction and the Z direction.

[0065] Specifically, when the fitting surface 31 of a certain backing plate 30 is completed to fit with the working surface at the inspection section of the blade to determine the attitude of the inspection section of the blade at this inspection angle, the position of the moving frame 10 can be kept unchanged. Then, the backing plate 30 can be lowered by the lifting mechanism 20 to separate it from the working surface of the blade, and the backing plate 30 can be removed. After the small axis torque test at this inspection angle is completed, the operator only needs to install another backing plate 30 on the slider 32, and then through the cooperation of the lifting mechanism 20 and the sliding groove and the slider 32, the backing plate 30 can adjust the attitude of the blade at another position at the same inspection section more quickly, improving the work efficiency.

[0066] Specifically, Figure 4 and Figure 5 the working surface corresponding to the inspection section of the blade in [specific figure] is convex, and the working surfaces corresponding to the inspection sections of the blades in the remaining figures are concave.

[0067] Specifically, Figure 6 It is only used to show the schematic diagram of the cooperation and use of the blade and the blade positioning device 100 of this embodiment.

[0068] Embodiment 2

[0069] This embodiment provides a method for using the blade positioning device 100 based on Embodiment 1, including the following steps:

[0070] S1. Install a certain backing plate 30 at the lifting end of the lifting mechanism 20, and move the moving frame 10 to place the fitting surface 31 of the backing plate 30 below the working surface corresponding to the inspection section of the blade fixed on the torque balancing machine;

[0071] S2. Drive the backing plate 30 to move upward through the lifting end of the lifting mechanism 20, so that the fitting surface 31 of the backing plate 30 is correspondingly attached to the working surface at the corresponding inspection section of the blade, fix the position of the blade, separate the fitting surface 31 of the backing plate 30 from the blade, and then perform a small axis torque test on the blade at this angular attitude;

[0072] S4, and so on. By replacing other backrests 30, the blade is made to assume other angular postures, and the small axis torque test of the blade in other angular postures is completed.

[0073] By adopting the pre-designed backrests 30 corresponding to the postures of the blade at different inspection angles, the posture positioning of the blade is made more accurate and convenient, and the work efficiency is improved.

[0074] In the present utility model, specific examples are used to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model; at the same time, for those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation on the present utility model.

Claims

1. A positioning device for a paddle blade, characterized in that: It includes a moving frame, a lifting mechanism and at least one set of backing plates; each set of backing plates includes a plurality of backing plates. The moving frame is capable of moving its position. The lifting mechanism is fixedly arranged on the moving frame; one of the backing plates is arranged on the lifting end of the lifting mechanism. Each of the backing plates is detachably arranged on the lifting end of the lifting mechanism; the upper end of the backing plate has a fitting surface; when the fitting surface of the backing plate fits with the working surface of the blade at the inspection section position, the blade is in the corresponding posture at a certain specified angle.

2. The positioning device for the blade according to claim 1, characterized in that: A base is fixedly arranged on the lifting end of the lifting mechanism, and the lifting end of the lifting mechanism can drive the base to lift in the vertical direction. A chute is arranged on the base, and a slider is fixedly arranged at the lower end of the backing plate; the slider is slidably arranged in the chute in the horizontal direction.

3. The positioning device for the blade according to claim 2, characterized in that: The lifting mechanism includes a platform, a lifter and at least one guiding component. The platform is fixedly arranged on the moving frame. The lifter is fixedly arranged on the platform, and the lifting end of the lifter is connected to the base. The guiding component includes a guide sleeve and a guide post; the guide sleeve is fixedly arranged on the platform; the guide post is slidably inserted through the guide sleeve in the vertical direction; the upper end of the guide post is fixedly connected to the base.

4. The positioning device for the blade according to claim 3, wherein: The lifter includes a threaded sleeve and a rotating screw rod. The threaded sleeve is fixedly arranged on the platform, and the threaded end of the rotating screw rod is threadedly connected in the threaded sleeve; the axis of the threaded sleeve coincides with the axis of the rotating screw rod, and both are parallel to the vertical direction; the upper end of the rotating screw rod abuts against the lower end surface of the base.

5. The positioning device for the blade according to claim 4, characterized in that: A through hole is arranged on the side wall of the rotating screw rod near the base, and a rotating rod is inserted through the through hole.

6. The positioning device for the blade according to claim 2, characterized in that: The slider and the backing plate are detachably connected together.

7. The positioning device for the blade according to claim 1, characterized in that: A plurality of rotating wheels are arranged at the lower end of the moving frame.

8. The positioning device for the blade according to claim 7, characterized in that: A locking device is arranged on at least one of the rotating wheels.

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