CN215626191U

CN215626191U - Blade root lifting clamp for fan blade

Info

Publication number: CN215626191U
Application number: CN202122033416.1U
Authority: CN
Inventors: 赵江; 陈宫; 唐小花; 谷燕楠
Original assignee: Qinhuangdao Yuefeng New Energy Technology Co ltd; Huaneng Weining Wind Power Co ltd
Current assignee: Qinhuangdao Yuefeng New Energy Technology Co ltd; Huaneng Weining Wind Power Co ltd
Priority date: 2021-08-26
Filing date: 2021-08-26
Publication date: 2022-01-25
Anticipated expiration: 2031-08-26

Abstract

The utility model discloses a blade root hoisting clamp for a fan blade, and relates to the technical field of hoisting of fan blades. The hoisting clamp comprises an L-shaped suspension arm, a connecting base is fixed at the bottom of the suspension arm, a guide pillar transversely arranged is arranged on the connecting base, a right clamping arm and a left clamping arm are arranged at two ends of the guide pillar, a third clamping arm which forms three-surface surrounding clamping with the right clamping arm and the left clamping arm is arranged on the outer end face of the connecting base, and a hydraulic driving device used for adjusting the right clamping arm and the left clamping arm to clamp or release the two arms relatively is arranged on the suspension arm. According to the hoisting clamp, firm three-surface surrounding clamping can be formed on the blade root of the fan blade through the right clamping arm, the left clamping arm and the third clamping arm, so that the large-size fan blade is vertically hoisted, the structural damage to the edge of the fan blade during horizontal hoisting is avoided, and the large-size fan blade can be stably hoisted to a wind turbine generator at the upper end of a fan pile by matching with a traction rope at the lower end of the fan blade.

Description

Blade root lifting clamp for fan blade

Technical Field

The utility model relates to the technical field of hoisting of fan blades, in particular to a blade root hoisting clamp capable of vertically hoisting fan blades.

Background

At present, in the hoisting technology of a fan, the hoisting technology is divided into two types: one method is to assemble the engine room, the hub and the blades into a whole on the ground, lift the whole machine to a high-position installation position through a crane, fasten the fan and finish the hoisting of the fan. Because the fan blades are exposed and can freely rotate, potential safety hazards exist, when the fan is hoisted, one of the blades needs to be fixedly clamped by virtue of an auxiliary hoist, and the auxiliary hoist and the blades are hoisted together by virtue of an auxiliary crane along with the crane for hoisting the fan main body; the other method is to use a special hanging strip to hoist the wind turbine generator and then independently hoist the fan blade to the wind turbine generator by a hoisting tool for installation. In addition, in the prior art, the existing hoisting tool generally adopts horizontal hoisting of the fan blade, and the edge of the fan blade is damaged sometimes in the hoisting process, so that the structural integrity of the fan blade is damaged, and the potential safety hazard exists in long-term operation.

Along with the gradual increase of the unit capacity of the existing wind driven generator, the overall dimension of the fan blade is also larger and larger, so that when the hoisting tool is used for fixing the fan blade, the fixing effect is poor, and horizontal hoisting is unsafe. In addition, due to the consideration of hydrodynamics and structure, the fan blade cannot be additionally provided with a hoisting hole and a mounting hook, so that higher requirements are provided for hoisting the large-size fan blade.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the utility model provides a blade root hoisting clamp capable of vertically hoisting fan blades.

The technical scheme adopted by the utility model for realizing the technical effects is as follows:

the utility model provides a blade root stone tongs of fan blade, includes the davit of "L" type, the bottom of davit is fixed with the connection base, be equipped with the guide pillar of horizontal setting on the connection base, the both ends of guide pillar are equipped with right centre gripping arm and left centre gripping arm, the outer terminal surface of connecting the base be equipped with right centre gripping arm with left centre gripping arm forms the third centre gripping arm of trilateral surroundingly centre gripping, be equipped with on the davit and be used for adjusting right centre gripping arm with left centre gripping arm carries out the hydraulic drive device that presss from both sides tightly relatively or relaxs.

Preferably, in the above-mentioned blade root stone tongs of fan blade, hydraulic drive device is including fixing pump box on the davit, and establish first pneumatic cylinder and second pneumatic cylinder on the connection base, be equipped with in the pump box respectively with the hydraulic pump that first pneumatic cylinder and second pneumatic cylinder are connected, the guide arm of first pneumatic cylinder with right centre gripping arm is connected, the guide arm of second pneumatic cylinder with left centre gripping arm is connected.

Preferably, in the blade root hoisting clamp for the fan blade, the boom is further connected with an operating handle through a fixing clamp plate, the left end and the right end of the operating handle are respectively provided with an elbow handle, and the left elbow handle and the right elbow handle are respectively provided with a hydraulic control switch for controlling the first hydraulic cylinder and the second hydraulic cylinder.

Preferably, in the above-mentioned blade root stone tongs of fan blade, the clamping end shaping of right centre gripping arm, left centre gripping arm and third centre gripping arm has the centre gripping cambered surface, be equipped with the centre gripping tile pad that is used for strengthening the centre gripping effort on the centre gripping cambered surface.

Preferably, in the blade root hoisting clamp for the fan blade, an adjustable assembling and connecting seat is arranged on the horizontal longitudinal arm at the upper end of the hoisting arm, and a hoisting ring is arranged on the assembling and connecting seat.

Preferably, in the above blade root hoisting fixture for a fan blade, two ends of the guide pillar are provided with end seats capable of moving relatively, the right clamping arm is fixed on the end seat on the right side, and the left clamping arm is fixed on the end seat on the left side.

Preferably, in the blade root hoisting clamp for the fan blade, two ends of the guide pillar are provided with column heads for preventing the end seat from overtravel.

The utility model has the beneficial effects that: according to the blade root hoisting clamp, the blade root part of the fan blade can be firmly clamped in a three-surface surrounding manner through the right clamping arm, the left clamping arm and the third clamping arm, so that the large-size fan blade can be vertically hoisted, the structural damage to the edge of the fan blade during horizontal hoisting is avoided, and the large-size fan blade can be stably hoisted to a wind turbine generator at the upper end of a fan pile column by matching with a traction rope at the lower end of the fan blade.

Drawings

FIG. 1 is a perspective view of the present invention;

fig. 2 is a perspective view of the present invention from another perspective.

Detailed Description

For a further understanding of the utility model, reference is made to the following description taken in conjunction with the accompanying drawings and specific examples, in which:

in the description of the present application, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, "first," "second," "third," and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it should be further noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, a connection through an intermediate medium, and a connection between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to specific circumstances.

Referring to fig. 1 and fig. 2, as shown in the drawings, an embodiment of the present invention provides a blade root hoisting fixture for a fan blade, the hoisting fixture includes an "L" shaped suspension arm 1, wherein a connecting base 2 is fixed at the bottom of the suspension arm 1, a guide pillar 3 transversely disposed is disposed on the connecting base 2, and a right clamping arm 4 and a left clamping arm 5 are disposed at two ends of the guide pillar 3. In order to stably and firmly clamp the blade root of the fan blade, as shown in fig. 1, a third clamping arm 6 is arranged on the outer end face of the connecting base 2, and the third clamping arm 6, the right clamping arm 4 and the left clamping arm 5 together form a three-side surrounding clamp for the blade root of the fan blade. In order to improve the strength of the blade root part of the fan blade, an inner supporting piece matched with the shape of the cavity of the blade root part can be sleeved in the blade root part. In order to conveniently control the opening angles of the right clamping arm 4 and the left clamping arm 5, a hydraulic driving device for adjusting the relative clamping or releasing of the right clamping arm 4 and the left clamping arm 5 is arranged on the suspension arm 1, and the distance set by the relative movement of the right clamping arm 4 and the left clamping arm 5 or the distance kept away from each other can be controlled through the hydraulic driving device, so that the suspension arm is suitable for blade roots with different diameters.

Further, in the preferred embodiment of the present invention, as shown in fig. 1 and 2, the hydraulic driving apparatus includes a pump housing 9 fixed to the boom 1, and a first hydraulic cylinder 91 and a second hydraulic cylinder 92 provided on the connection base 2. A hydraulic pump is provided in the pump box 9, and the hydraulic pump is connected to the first hydraulic cylinder 91 and the second hydraulic cylinder 92, respectively. Specifically, as shown in fig. 1 and 2, the guide rod of the first hydraulic cylinder 91 is connected to the right clamp arm 4, and the guide rod of the second hydraulic cylinder 92 is connected to the left clamp arm 5. The first hydraulic cylinder 91 can adjust the movement of the right clamp arm 4, and the second hydraulic cylinder 92 can adjust the movement of the left clamp arm 5.

Further, in the preferred embodiment of the present invention, as shown in fig. 1 and 2, the boom 1 is further connected to a control handle 93 through a fixing clamp plate 96, the control handle 93 is formed with elbow handles 94 at left and right ends thereof, and the left and right elbow handles 94 are respectively provided with hydraulic control switches 95 for controlling the first hydraulic cylinder 91 and the second hydraulic cylinder 92. The amount of extension and retraction of the guide rods of the first hydraulic cylinder 91 can be controlled by a corresponding hydraulic control switch 95 on the right elbow handle 94, thereby driving the displacement of the right gripping arm 4. The amount of extension and contraction of the guide rod of the second hydraulic cylinder 92 can be controlled by a corresponding hydraulic control switch 95 of the left elbow handle 94, thereby driving the displacement amount of the left clamp arm 5.

Further, in the preferred embodiment of the present invention, as shown in fig. 1 and fig. 2, the clamping ends of the right clamping arm 4, the left clamping arm 5 and the third clamping arm 6 are formed with clamping arc surfaces, and the clamping arc surfaces can be adapted to the curved surface of the blade root portion to better clamp the blade root portion. In order to increase the clamping and fixing effects, the clamping tile pad 7 is arranged on the clamping arc surface, and the clamping tile pad 7 can increase the clamping acting force on the blade root part by increasing the friction with the blade root part. Meanwhile, the steps formed on the upper side edge of the clamping arc surface by the right clamping arm 4, the left clamping arm 5 and the third clamping arm 6 can carry the annular steps at the blade root part, so that the hoisting stability of the blade root part is improved.

Further, in the preferred embodiment of the present invention, as shown in fig. 1 and 2, the upper horizontal trailing arm 11 of the boom 1 is provided with an adjustable assembling and connecting base 12, and the assembling and connecting base 12 is provided with a hoisting ring 13. In particular, in the preferred embodiment of the utility model, the horizontal trailing arm 11 is integrally formed with the vertical body of the boom 1, ensuring the structural strength of the boom. The hoisting ring 13 is connected with a hoisting rope, and the whole fan blade can be vertically hoisted by hoisting.

In some embodiments, as shown in fig. 1 and 2, the two ends of the guide post 3 are provided with end seats 8 capable of moving relatively, wherein the right clamping arm 4 is fixed on the right end seat 8, and the left clamping arm 5 is fixed on the left end seat 8. In order to prevent the left and right side end seats 8 from being out of the way from the end of the guide post 3 during adjustment, two ends of the guide post 3 are respectively provided with a head for preventing the end from being out of way.

In summary, the blade root hoisting clamp provided by the utility model can firmly clamp three surfaces of the blade root of the fan blade in an encircling manner through the right clamping arm, the left clamping arm and the third clamping arm, so that the large-size fan blade is vertically hoisted, the structural damage to the edge of the fan blade during horizontal hoisting is avoided, and the large-size fan blade can be stably hoisted to a wind turbine generator at the upper end of the fan pile by matching with the traction rope at the lower end of the fan blade.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the utility model, but that various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined by the appended claims and their equivalents.

Claims

1. The utility model provides a blade root stone tongs of fan blade, includes davit (1) of "L" type, its characterized in that, the bottom of davit (1) is fixed with connection base (2), be equipped with horizontal guide pillar (3) that sets up on connection base (2), the both ends of guide pillar (3) are equipped with right centre gripping arm (4) and left centre gripping arm (5), the outer terminal surface of connecting base (2) be equipped with right centre gripping arm (4) with left centre gripping arm (5) form trilateral third centre gripping arm (6) of embracing the centre gripping, be equipped with on davit (1) and be used for adjusting right centre gripping arm (4) with left centre gripping arm (5) carry out the hydraulic drive device that presss from both sides tightly relatively or relax.

2. The blade root lifting clamp for the fan blade according to claim 1, wherein the hydraulic driving device comprises a pump box (9) fixed on the boom (1), and a first hydraulic cylinder (91) and a second hydraulic cylinder (92) arranged on the connection base (2), a hydraulic pump connected with the first hydraulic cylinder (91) and the second hydraulic cylinder (92) respectively is arranged in the pump box (9), a guide rod of the first hydraulic cylinder (91) is connected with the right clamping arm (4), and a guide rod of the second hydraulic cylinder (92) is connected with the left clamping arm (5).

3. The blade root lifting clamp for the fan blade according to claim 2, characterized in that the boom (1) is further connected with an operating handle (93) through a fixing clamp plate (96), the left and right ends of the operating handle (93) are formed with elbow handles (94), and the left and right elbow handles (94) are respectively provided with a hydraulic control switch (95) for controlling the first hydraulic cylinder (91) and the second hydraulic cylinder (92).

4. The blade root hoisting clamp for fan blades according to claim 1, wherein the clamping ends of the right clamping arm (4), the left clamping arm (5) and the third clamping arm (6) are formed with clamping arc surfaces, and the clamping arc surfaces are provided with clamping pads (7) for enhancing clamping force.

5. The blade root lifting clamp of the fan blade as recited in claim 1, wherein the upper horizontal trailing arm (11) of the suspension arm (1) is provided with an adjustable assembly connecting base (12), and the assembly connecting base (12) is provided with a lifting ring (13).

6. The blade root lifting clamp for fan blades according to claim 1, characterized in that the two ends of the guide post (3) are provided with end seats (8) that can move relatively, the right clamping arm (4) is fixed on the right side of the end seat (8), and the left clamping arm (5) is fixed on the left side of the end seat (8).

7. The blade root lifting clamp for fan blades according to claim 6, characterized in that the two ends of the guide post (3) are provided with studs for preventing the end sockets (8) from overtravel.