Fan blade strength testing tool

Abstract

The utility model provides a fan blade strength testing tool which comprises a hanging basket assembly, and the hanging basket assembly comprises a hanging basket and an embracing supporting arm. The hanging basket is mounted on the embracing support arm; the embracing support arm is mounted on the tower drum in a sleeving manner; the fan blade adsorption assembly comprises a floating suction cup and a follow-up support; the floating suction cup is movably installed on the follow-up support and used for being connected with fan blades in an adsorption mode. The suspension arm assembly comprises a suspension arm connected between the hanging basket and the follow-up bracket; the suspension arm is L-shaped, and the extension direction of the bent part is perpendicular to the butt joint surface of the fan blade; and first steel wire ropes are respectively arranged on two sides of the lifting arm along the bending direction. The first steel wire ropes are installed on the two sides of the suspension arm respectively, so that the ends of the suspension arm can correspondingly swing by driving the corresponding first steel wire ropes respectively, and then the floating suction cup is driven to apply corresponding pulling force and pushing force to the fan blades. And meanwhile, the other end of the suspension arm is also connected with the hanging basket, so that an operation space is provided for operators.

Description

Technical Field

[0001] The present application relates to the technical field of wind power generation, and in particular to a blade strength testing tool. Background Art

[0002] Wind turbines are electrical equipment that converts wind energy into mechanical work, which drives the rotor to rotate and finally outputs alternating current. Wind turbines are generally composed of wind rotors, generators, directional controllers, towers, speed limit safety mechanisms, and energy storage devices. The blades used in wind turbines need to be tested for strength during production. However, the existing blade strength test is a static strength test, which cannot complete the strength test after the blades are installed. Therefore, the above problems need to be solved urgently. Summary of the invention

[0003] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide a fan blade strength testing tool.

[0004] The present application provides a fan blade strength testing tool, comprising:

[0005] A hanging basket assembly, the hanging basket assembly comprising a hanging basket and an embracing support arm;

[0006] The hanging basket is installed on the embracing support arm to provide an operating space;

[0007] The embracing support arm is sleeved and installed on the tower, and is used to be tightly connected with the tower;

[0008] A fan blade adsorption assembly, the fan blade adsorption assembly comprising a floating suction cup and a follower bracket;

[0009] The floating suction cup is movably mounted on the follower bracket and is used for adsorption connection with the fan blade;

[0010] A boom assembly, the boom assembly comprising a boom connected between the hanging basket and the follower bracket;

[0011] The suspension arm is L-shaped, and the extension direction of the bent portion is perpendicular to the butt joint surface of the fan blade;

[0012] The first steel wire ropes are respectively provided on both sides of the boom along the bending direction, for driving the floating suction cup to apply tension and thrust to the fan blades respectively.

[0013] Furthermore,

[0014] The embracing support arm comprises a connecting frame which is hinged in sequence;

[0015] The connecting frame is arc-shaped, and the connecting frames at both ends are connected by a second steel wire rope;

[0016] The number of the second steel wire ropes is two, one end of which is mounted on the corresponding connecting frame, and the other end is connected to the corresponding first hoist;

[0017] The first hoist is installed on the hanging basket.

[0018] Furthermore,

[0019] The hanging basket is C-shaped and fixedly mounted on the connecting frame located in the middle;

[0020] The connecting frame is located at the bottom of the hanging basket and is used for supporting the hanging basket.

[0021] Furthermore,

[0022] The suspension arm is installed in the middle of the hanging basket and is located near the bottom of the hanging basket;

[0023] The hanging basket is also provided with a second hoist for driving the first steel wire rope;

[0024] The second hoist is located directly above the boom.

[0025] Furthermore,

[0026] A third steel wire rope is also installed between the second hoist and the boom;

[0027] One end of the third steel wire rope away from the second hoist is fixedly installed at one end of the boom close to the bending portion, and is used to adjust the horizontality of the boom.

[0028] Furthermore,

[0029] The follower bracket includes a cross-shaped mounting shaft;

[0030] The installation shaft is rotatably connected to the floating suction cup through two opposite ends, and is rotatably connected to the suspension arm through the other two opposite ends.

[0031] Furthermore,

[0032] The floating suction cup includes a base frame connected to the mounting shaft;

[0033] A suction cup is installed on one side of the base frame away from the installation axis through a universal joint;

[0034] The universal joint is located in the middle of the suction cup;

[0035] Support rods are also provided at the four corners of the base frame corresponding to the suction cups;

[0036] The support rod is telescopically mounted on the base frame, and the end portion thereof abuts against the suction cup.

[0037] Furthermore,

[0038] An outer edge is provided in the middle of the support rod along the circumferential direction, which is used to limit the support rod from being separated from the base frame;

[0039] The base frame is provided with matching mounting holes corresponding to the support rods;

[0040] A limiting groove with a relatively large diameter is also provided in the mounting hole corresponding to the outer edge, so as to limit the sliding stroke of the support rod.

[0041] Furthermore,

[0042] The base frame is also provided with a locking mechanism corresponding to the support rod;

[0043] The locking mechanism is located on a side of the base frame away from the suction cup, and includes a fixing block fixedly mounted on the base frame;

[0044] A strip-shaped through hole is provided on the fixing block corresponding to the support rod, and a pressing block for locking is provided in the strip-shaped through hole corresponding to the support rod;

[0045] The pressing block is hingedly mounted on the fixing block, and a side close to the supporting rod is arc-shaped.

[0046] Furthermore,

[0047] The pressing block is driven by a cylinder;

[0048] The piston rod of the cylinder is fixedly connected to the base frame, and a rack for driving the pressing block is provided on the cylinder body;

[0049] A matching gear is provided on the pressing block corresponding to the rack.

[0050] The advantages and positive effects of this application are:

[0051] The technical solution installs first steel wire ropes on both sides of the boom respectively, so that the ends of the boom can swing accordingly by driving the corresponding first steel wire ropes respectively, thereby driving the floating suction cup to apply corresponding tension and thrust to the fan blades; at the same time, the other end of the boom is also connected to the hanging basket, which not only provides operating space for the operator, but also can be docked and installed with the tower, so as to effectively test the strength of the installed fan blades. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 A schematic diagram of the structure of a fan blade strength test tool provided in an embodiment of the present application;

[0053] Figure 2 A schematic diagram of the structure of a hanging basket assembly of a blade strength testing tool provided in an embodiment of the present application;

[0054] Figure 3 A schematic diagram of the structure of the fan blade adsorption assembly of the fan blade strength testing tooling provided in an embodiment of the present application.

[0055] The text markings in the figure are as follows: 100 - hanging basket; 110 - embracing support arm; 120 - second hoist; 130 - third wire rope; 200 - tower; 210 - fan blades; 300 - floating suction cup; 310 - follow-up bracket; 320 - fixed block; 321 - pressure block; 330 - cylinder; 400 - boom; 410 - first wire rope. DETAILED DESCRIPTION

[0056] In order to enable those skilled in the art to better understand the technical solution of the present application, the present application is described in detail below in conjunction with the accompanying drawings. The description in this section is only exemplary and explanatory and should not have any limiting effect on the scope of protection of the present application.

[0057] Please refer to Figure 1 -3. This embodiment provides a blade strength test tool, including a hanging basket assembly, the hanging basket assembly includes a hanging basket 100 and an embracing arm 110; the hanging basket 100 is installed on the embracing arm 110 to provide an operating space; the embracing arm 110 is sleeved and installed on the tower 200 to be tightly connected with the tower 200; a blade adsorption assembly, the blade adsorption assembly includes a floating suction cup 300 and a follower bracket 310; the floating suction cup 300 is movably installed on the follower bracket 310 to be adsorbed and connected with the blade 210; an arm assembly, the arm assembly includes an arm 400 connected between the hanging basket 100 and the follower bracket 310; the arm 400 is L-shaped, and the extension direction of the bending part is perpendicular to the docking surface of the blade 210; the first steel wire rope 410 is also provided on both sides of the arm 400 along the bending direction, which is used to drive the floating suction cup 300 to apply tension and thrust to the blade 210 respectively.

[0058] In this embodiment, the hanging basket 100 is installed on the embracing arm 110, and can be mounted on the tower 200 by the embracing arm 110; at the same time, the end of the hanging basket 100 away from the tower 200 is also connected to the floating suction cup 300 through the hanging arm 400, thereby forming a connection between the fan blade 210 and the tower 200.

[0059] In this embodiment, first steel wire ropes 410 are respectively installed on both sides of the boom 400. By driving the corresponding first steel wire ropes 410, the end of the boom 400 can be swung in the corresponding direction, thereby driving the floating suction cup 300 to apply tension or thrust to the fan blades 210.

[0060] In a preferred embodiment, the embracing arm 110 includes connecting frames that are hinged in sequence; the connecting frames are arc-shaped, and the connecting frames at both ends are connected by a second steel wire rope; there are two second steel wire ropes, one end of which is installed on the corresponding connecting frame, and the other end is connected to the corresponding first hoist; the first hoist is installed on the hanging basket 100.

[0061] In the present embodiment, the embracing support arm 110 is formed by splicing connecting frames which are hinged in sequence; at the same time, the connecting frames are all arc-shaped, and after splicing, a circular structure will be formed, which can then be connected to the tower 200 by being sleeved.

[0062] In this embodiment, the two connecting frames located at the ends are connected by a second steel wire rope; at the same time, after the two ends of the embracing arm 110 are butt-jointed, the inner diameter is relatively smaller than the outer diameter of the tower 200, thereby ensuring that the embracing arm 110 can be tightly clamped on the tower 200 by the second steel wire rope.

[0063] In this embodiment, the two sets of second wire rope locking mechanisms are respectively driven by independent first hoists, so that the embracing support arm 110 is locked by the two sets of locking mechanisms at the same time; even if one set of locking mechanisms fails, the stability of the embracing support arm 110 can be ensured.

[0064] In a preferred embodiment, the hanging basket 100 is C-shaped and fixedly mounted on a connecting frame located in the middle; the connecting frame is located at the bottom of the hanging basket 100 and is used to support the hanging basket 100.

[0065] In a preferred embodiment, the boom 400 is installed in the middle of the hanging basket 100 and is located near the bottom of the hanging basket 100; a second hoist 120 is also provided on the hanging basket 100 for driving the first wire rope 410; the second hoist 120 is located directly above the boom 400.

[0066] In this embodiment, the first steel wire rope 410 is driven by the second hoist 120; the second hoist 120 is fixedly mounted on the hanging basket 100; at the same time, the hanging basket 100 is also provided with guide wheels corresponding to the first steel wire rope 410 on both sides of the second hoist 120, so that a triangular structure is formed between the first steel wire rope 410 and the boom 400, thereby facilitating driving the end of the boom 400.

[0067] In a preferred embodiment, a third steel wire rope 130 is installed between the second hoist 120 and the boom 400; one end of the third steel wire rope 130 away from the second hoist 120 is fixedly installed at one end of the boom 400 close to the bending portion for adjusting the horizontality of the boom 400.

[0068] In this embodiment, the end of the boom 400 away from the hanging basket 100 is also connected to the second hoist 120 through the third steel wire rope 130, and a triangular structure is formed between the third steel wire rope 130 and the boom 400 to prevent the end of the boom 400 from sinking due to gravity.

[0069] In a preferred embodiment, the follower bracket 310 includes a cross-shaped mounting shaft; the mounting shaft is rotatably connected to the floating suction cup 300 through two opposite ends, and is rotatably connected to the suspension arm 400 through the other two opposite ends.

[0070] In this embodiment, the floating suction cup 300 is connected to the suspension arm 400 via a cross-shaped mounting shaft, so that the floating suction cup 300 can rotate around the x-axis and the y-axis relative to the suspension arm 400 at the same time.

[0071] In a preferred embodiment, the floating suction cup 300 includes a base frame connected to the mounting axis; a suction cup is installed on the side of the base frame away from the mounting axis through a universal joint; the universal joint is located in the middle of the suction cup; support rods are also provided at the four corners of the base frame corresponding to the suction cup; the support rods are telescopically installed on the base frame, and the ends are against the suction cup.

[0072] In a preferred embodiment, an outer edge is provided in the middle of the support rod along the circumferential direction to limit the support rod from detaching from the base frame; a matching mounting hole is provided on the base frame corresponding to the support rod; a limiting groove with a relatively large diameter is also provided in the mounting hole corresponding to the outer edge to limit the sliding stroke of the support rod.

[0073] In a preferred embodiment, a locking mechanism is also provided on the base frame corresponding to the support rod; the locking mechanism is located on the side of the base frame away from the suction cup, and includes a fixed block 320 fixedly installed on the base frame; a strip-shaped through hole is provided on the fixed block 320 corresponding to the support rod, and a pressure block 321 for locking is provided in the strip-shaped through hole corresponding to the support rod; the pressure block 321 is hingedly installed on the fixed block 320, and the side close to the support rod is arc-shaped.

[0074] In a preferred embodiment, the pressing block 321 is driven by a cylinder 330 ; the piston rod of the cylinder 330 is fixedly connected to the base frame, and a rack for driving the pressing block 321 is provided on the cylinder body; and a matching gear is provided on the pressing block 321 corresponding to the rack.

[0075] In this embodiment, when the cylinder 330 is in an extended state, the pressure block 321 and the support rod are in a relaxed state and will not affect the sliding of the support rod; when the cylinder 330 switches from an extended state to a contracted state, the pressure block 321 will rotate relatively and drive the support rod to slide toward the side close to the suction cup during the rotation; when the force between the support rod and the suction cup is greater than the force between the support rod and the pressure block 321, the support rod will no longer slide until the pressure block 321 completes the rotation and locks the support rod in this state.

[0076] In this embodiment, when the fan blade 210 is in a tension test, the cylinder 330 will be in an extended state, and no restriction will be imposed on the suction cup at this time; and when the fan blade 210 is in a thrust test, the cylinder 330 will contract to cause the support rod to abut against and fix the suction cup.

[0077] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and its core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can also make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. A blade strength testing tool, characterized in that: include A hanging basket assembly, the hanging basket assembly comprising a hanging basket (100) and an embracing support arm (110); The hanging basket (100) is installed on the embracing support arm (110) to provide an operating space; The embracing support arm (110) is sleeved and installed on the tower (200) and is used to be tightly connected to the tower (200); A fan blade adsorption assembly, the fan blade adsorption assembly comprising a floating suction cup (300) and a follower bracket (310); The floating suction cup (300) is movably mounted on the follower bracket (310) and is used for adsorption connection with the fan blade (210); A boom assembly, the boom assembly comprising a boom (400) connected between the hanging basket (100) and a follower bracket (310); The suspension arm (400) is L-shaped, and the extension direction of the bent portion is perpendicular to the butt joint surface of the fan blade (210); The first steel wire ropes (410) are respectively provided on both sides of the suspension arm (400) along the bending direction, and are used to drive the floating suction cup (300) to apply a pulling force and a pushing force to the fan blade (210).

2. The fan blade strength testing tool according to claim 1, characterized in that: The embracing support arm (110) comprises a connecting frame which is hinged in sequence; The connecting frame is arc-shaped, and the connecting frames at both ends are connected by a second steel wire rope; The number of the second steel wire ropes is two, one end of which is mounted on the corresponding connecting frame, and the other end is connected to the corresponding first hoist; The first hoist is installed on the hanging basket (100).

3. The fan blade strength testing tool according to claim 2, characterized in that: The hanging basket (100) is C-shaped and fixedly mounted on the connecting frame located in the middle; The connecting frame is located at the bottom of the hanging basket (100) and is used to support the hanging basket (100).

4. The fan blade strength testing tool according to claim 1, characterized in that: The suspension arm (400) is installed in the middle of the suspension basket (100) and is located near the bottom of the suspension basket (100); The hanging basket (100) is also provided with a second hoist (120) for driving the first steel wire rope (410); The second hoist (120) is located directly above the boom (400).

5. The fan blade strength testing tool according to claim 4, characterized in that: A third steel wire rope (130) is also installed between the second hoist (120) and the boom (400); One end of the third steel wire rope (130) away from the second hoist (120) is fixedly mounted at one end of the boom (400) close to the bending portion, and is used to adjust the horizontality of the boom (400).

6. The fan blade strength testing tool according to claim 1, characterized in that: The follower bracket (310) comprises a cross-shaped mounting shaft; The installation shaft is rotatably connected to the floating suction cup (300) through two opposite ends, and is rotatably connected to the suspension arm (400) through the other two opposite ends.

7. The fan blade strength testing tool according to claim 6, characterized in that: The floating suction cup (300) comprises a base frame connected to the mounting shaft; A suction cup is installed on one side of the base frame away from the installation axis through a universal joint; The universal joint is located in the middle of the suction cup; Support rods are also provided at the four corners of the base frame corresponding to the suction cups; The support rod can be slidably mounted on the base frame, and the end portion thereof abuts against the suction cup.

8. The fan blade strength testing tool according to claim 7, characterized in that: An outer edge is provided in the middle of the support rod along the circumferential direction, which is used to limit the support rod from being separated from the base frame; The base frame is provided with matching mounting holes corresponding to the support rods; A limiting groove with a relatively large diameter is also provided in the mounting hole corresponding to the outer edge, so as to limit the sliding stroke of the support rod.

9. The fan blade strength testing tool according to claim 8, characterized in that: The base frame is also provided with a locking mechanism corresponding to the support rod; The locking mechanism is located on a side of the base frame away from the suction cup, and comprises a fixing block (320) fixedly mounted on the base frame; The fixing block (320) is provided with a strip-shaped through hole corresponding to the support rod, and a pressing block (321) for locking is provided in the strip-shaped through hole corresponding to the support rod; The pressing block (321) is hingedly mounted on the fixing block (320), and a side close to the supporting rod is arc-shaped.

10. The fan blade strength testing tool according to claim 9, characterized in that: The pressing block (321) is driven by a cylinder (330); The piston rod of the cylinder (330) is fixedly connected to the base frame, and a rack for driving the pressing block (321) is provided on the cylinder body; A matching gear is provided on the pressing block (321) corresponding to the rack.

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