阅读说明：本技术 一种长度可调节的桨叶周转辅助吊具 (Length-adjustable auxiliary lifting appliance for turnover of blades ) 是由 戴周军 钱栋祥 程翔 汪开兵 徐雯婷 李江钰 吴银秀 王广雷 徐凌波 高宁波 黄 于 2020-11-20 设计创作，主要内容包括：本发明提供一种长度可调节的桨叶周转辅助吊具,包括：吊环(1)、钢丝绳(2)、柔性吊带(6)、粗口滑管(7)、套管(8)和细口滑管(11)；细口滑管(11)插入在粗口滑管(7)内,可在粗口滑管(7)内自由移动,细口滑管(11)上还套设有套管(8),套管(8)用于限制细口滑管(11)插入粗口滑管(7)的程度；粗口滑管(7)与细口滑管(11)的非连接的一端分别通过一根钢丝绳(2)与吊环(1)连接；粗口滑管(7)与细口滑管(11)的非连接的一端还分别通过柔性吊带(6)悬吊复合材料桨叶(12)。省时省力,降低了班组的劳动强度,提高复合材料主桨叶周转的安全性。(The invention provides a length-adjustable auxiliary lifting appliance for blade turnover, which comprises: the steel wire rope is characterized by comprising a lifting ring (1), a steel wire rope (2), a flexible hanging strip (6), a thick sliding pipe (7), a sleeve (8) and a thin sliding pipe (11); the thin-opening sliding pipe (11) is inserted into the thick-opening sliding pipe (7) and can freely move in the thick-opening sliding pipe (7), a sleeve (8) is further sleeved on the thin-opening sliding pipe (11), and the sleeve (8) is used for limiting the degree of inserting the thin-opening sliding pipe (11) into the thick-opening sliding pipe (7); the non-connected ends of the thick sliding pipe (7) and the thin sliding pipe (11) are respectively connected with the lifting ring (1) through a steel wire rope (2); the non-connected ends of the thick sliding pipe (7) and the thin sliding pipe (11) are respectively suspended with the composite material paddle (12) through the flexible sling (6). Time and labor are saved, the labor intensity of teams and groups is reduced, and the turnover safety of the main blades of the composite material is improved.)

1. A length-adjustable auxiliary lifting appliance for turnover of blades is characterized by comprising: the steel wire rope is characterized by comprising a lifting ring (1), a steel wire rope (2), a flexible hanging strip (6), a thick sliding pipe (7), a sleeve (8) and a thin sliding pipe (11); wherein the content of the first and second substances,

the thin opening sliding pipe (11) is inserted into the thick opening sliding pipe (7) and can freely move in the thick opening sliding pipe (7), the sleeve (8) is further sleeved on the thin opening sliding pipe (11), and the sleeve (8) is used for limiting the degree of inserting the thin opening sliding pipe (11) into the thick opening sliding pipe (7);

the non-connected ends of the thick sliding pipe (7) and the thin sliding pipe (11) are respectively connected with the lifting ring (1) through a steel wire rope (2);

the non-connected ends of the thick sliding pipe (7) and the thin sliding pipe (11) are respectively suspended with the composite material paddle (12) through a flexible hanging strip (6).

2. The blade turn-around auxiliary spreader of claim 1, further comprising: a brake pad (9) and a locking bolt (10);

the brake pad (9) is arranged between the sleeve (8) and the thin opening sliding tube (11), and the locking bolt (10) is arranged on the sleeve (8);

the locking bolt (10) is used for pressing the brake pad (9) and the narrow-opening sliding pipe (11) tightly and fixing the position of the sleeve (8) on the narrow-opening sliding pipe (11).

3. The blade turnover auxiliary sling according to claim 1, wherein the non-connected ends of the thick sliding pipe (7) and the thin sliding pipe (11) are respectively provided with two lifting lugs (4); the two lifting lugs (4) comprise an upper lifting lug and a lower lifting lug;

the upper lifting lug is used for connecting a steel wire rope (2), and the lower lifting lug is used for connecting a flexible hanging strip (6).

4. The blade turnover auxiliary spreader of claim 1, wherein both ends of the steel wire rope (2) are fixed by aluminum sleeve joints (3).

5. The blade turn-around auxiliary hoist according to claim 3, characterized in that the upper lifting lug is triangular;

the two upper lifting lugs, the two steel wire ropes, the thick sliding pipe (7) and the thin sliding pipe (11) form a triangle.

6. The blade turn-around auxiliary spreader of claim 3, further comprising: a claw slide hook (5);

the lower lifting lug is connected with the claw slide hook (5) by a cylindrical pin;

the flexible hanging strip (6) is hung on the claw slide hook (5) and used for hanging the composite material paddle (12).

7. Blade turnover auxiliary spreader according to claim 6, characterised in that the claw hooks (5) are provided with safety catches for preventing the flexible straps (6) from slipping off.

8. The blade turn-around auxiliary spreader according to claim 6, wherein the flexible sling (6) is provided with a double-ended buckle, the flexible sling (6) being passed around the composite blade (12) such that the double-ended buckle is buckled on the cleat sliding hook (5);

the length of the flexible hanging strip (6) is 3-5 times of the chord-wise width of the composite material main blade (12).

Technical Field

The invention belongs to the field of design of technological equipment, and particularly relates to a length-adjustable auxiliary lifting appliance for blade turnover.

Background

The span-wise length of the composite rotor blade varies from a few meters to a dozen meters, the chord-wise width is about half a meter, and the weight is distributed between 40kg and 150 kg. The airfoil profile of the main blade is of a special curved surface structure, the surface is smooth, no force point for convenient grabbing is provided, and the carrying and the transferring are difficult.

In general, the composite material blade is turned around by using a manual carrying mode. 4-5 operators are needed for one main blade, the surface of the composite blade is easy to be damaged in the carrying process, and serious potential safety hazards exist. The original carrying mode is time-consuming and labor-consuming, the labor intensity of a team is high, and operators complain of emotion frequently.

Therefore, it is necessary to optimize the revolving mode of the composite material rotor blade and design a length-adjustable auxiliary revolving sling for the rotor blade.

Disclosure of Invention

The invention provides a length-adjustable blade turnover auxiliary lifting appliance, which solves the problems that an original carrying mode is time-consuming and labor-consuming, and the surface of a composite blade is easy to be damaged.

The invention provides a length-adjustable auxiliary lifting appliance for blade turnover, which comprises: the device comprises a lifting ring 1, a steel wire rope 2, a flexible hanging strip 6, a thick sliding pipe 7, a sleeve 8 and a thin sliding pipe 11; wherein the content of the first and second substances,

the thin-opening sliding tube 11 is inserted into the thick-opening sliding tube 7 and can freely move in the thick-opening sliding tube 7, the sleeve 8 is further sleeved on the thin-opening sliding tube 11, and the sleeve 8 is used for limiting the degree of inserting the thin-opening sliding tube 11 into the thick-opening sliding tube 7;

the non-connected ends of the thick sliding pipe 7 and the thin sliding pipe 11 are respectively connected with the lifting ring 1 through a steel wire rope 2;

the non-connected ends of the thick sliding pipe 7 and the thin sliding pipe 11 are also respectively suspended with a composite material paddle 12 through a flexible hanging strip 6.

Optionally, the blade turnover auxiliary hoist further comprises: brake pads 9 and locking bolts 10;

the brake pad 9 is arranged between the sleeve 8 and the narrow-mouth sliding pipe 11, and the locking bolt 10 is arranged on the sleeve 8;

the locking bolt 10 is used for pressing the brake pad 9 and the narrow-mouth sliding tube 11, and fixing the position of the sleeve 8 on the narrow-mouth sliding tube 11.

Optionally, two lifting lugs 4 are respectively arranged at the non-connected ends of the thick sliding pipe 7 and the thin sliding pipe 11; the two lifting lugs 4 comprise an upper lifting lug and a lower lifting lug;

the upper lifting lug is used for connecting the steel wire rope 2, and the lower lifting lug is used for connecting the flexible hanging strip 6.

Optionally, two ends of the steel wire rope 2 are respectively fixed by the aluminum sleeve joints 3.

Optionally, the upper lifting lug is triangular;

the two upper lifting lugs, the two steel wire ropes, the thick sliding pipe 7 and the thin sliding pipe 11 form a triangle.

Optionally, the blade turnover auxiliary hoist further comprises: a claw slide hook 5;

the lower lifting lug is connected with the claw slide hook 5 by a cylindrical pin;

the flexible sling 6 is hung on the claw slide hook 5 and is used for hanging the composite material blade 12.

Optionally, the cavel slide hook 5 is provided with a safety catch for preventing the flexible hanging strip 6 from slipping off.

Optionally, the flexible sling 6 is provided with a two-end buckle, and the flexible sling 6 is wound around the composite material paddle 12 to enable the two-end buckle to be buckled on the cavel slide hook 5;

the length of the flexible sling 6 is 3-5 times of the chordwise width of the composite main blade 12.

The invention provides a length-adjustable auxiliary lifting appliance for blade turnover, which utilizes the scalability of a slide pipe and the mechanics principle of stable triangular structure to change single-point stress into multi-point stress and the flexibility of woven cloth of a hanging strip, thereby facilitating the control of an operator on the gravity center position and the motion direction of a blade and well solving the problem of difficult turnover of the composite material blade. The composite main blade is time-saving and labor-saving, the labor intensity of teams and groups is reduced, and the turnover safety of the composite main blade is improved.

Drawings

Fig. 1 is a schematic structural view of a length-adjustable blade-turning auxiliary spreader provided by the invention;

description of reference numerals:

1-a hoisting ring; 2-a steel wire rope; 3-aluminum sleeve joint;

4-lifting lugs; 5-claw sliding hook; 6-a flexible sling;

7-a wide-mouth sliding pipe; 8-a sleeve; 9-brake pads;

10-locking bolts; 11-a narrow-mouth slide tube; 12-composite blades.

Detailed Description

The length-adjustable blade turning auxiliary sling provided by the invention is explained below by combining the attached drawings.

Fig. 1 is a schematic structural view of a length-adjustable blade turnover auxiliary lifting appliance provided by the invention, and referring to fig. 1, the length-adjustable blade turnover auxiliary lifting appliance provided by the invention mainly comprises a lifting ring 1, a steel wire rope 2, an aluminum sleeve joint 3, a lifting lug 4, a cleat sliding hook 5, a flexible lifting belt 6, a wide-opening sliding pipe 7, a sleeve 8, a brake gasket 9, a locking bolt 10, a narrow-opening sliding pipe 11 and the like.

Wherein, the thin opening slide tube 11 is inserted in the thick opening slide tube 7, the thin opening slide tube 11 is also sleeved with a sleeve 8, and a brake pad 9 is arranged in the sleeve 8 and can be braked by a locking bolt 10. When the locking bolt 10 is loosened, the thin sliding pipe 11 can freely move in the thick sliding pipe 7; when the required length is reached, tightening the locking bolt brakes the relative movement of the two. The length of the lifting appliance is adjustable.

Four lifting lugs 4 are respectively welded in the upper direction and the lower direction of the non-connected end of the thick sliding pipe 7 and the thin sliding pipe 11.

Two steel wire ropes 2 are respectively connected with the lifting ring 1 and the upper lifting lug and are fixedly connected by an aluminum sleeve joint 3.

The lower lifting lug is connected with the claw slide hook 5 by a cylindrical pin; the flexible sling 6 is hung on the claw slide hook 5. The flexible straps 6 are used to suspend the composite blades 12.

The lifting lugs 4 are designed to be triangular and are symmetrically welded at two ends of the steel pipe hanger rod respectively.

Further, the steel wire ropes 2 are distributed in a splayed manner, and form a stable tripod structure with the horizontally arranged thick sliding pipes 7 and the horizontally arranged thin sliding pipes 11.

Furthermore, the claw slide hook 5 is provided with a safety buckle which can be used for ensuring that the flexible hanging strip 6 does not have the unexpected situations of slipping and the like.

Furthermore, the flexible sling 6 is made of cotton woven cloth and provided with two end buckles, the length of the flexible sling can be correspondingly processed and manufactured according to the chordwise width of the composite material main blade, and the flexible sling is generally designed according to the 3-5 times of the chordwise width of the composite material main blade.

The invention utilizes the scalability of the slide tube, changes the single-point stress into the multi-point stress by the mechanics principle of stable triangle structure, and is convenient for an operator to control the gravity center position and the movement direction of the blade by the flexibility of the hanging strip woven cloth, thereby well solving the problem of difficult turnover of the composite blade. The composite main blade is time-saving and labor-saving, the labor intensity of teams and groups is reduced, and the turnover safety of the composite main blade is improved.

The invention provides a using method of a length-adjustable blade turnover auxiliary lifting appliance, which comprises the following steps:

the first step is as follows: checking before use. Before the turnover auxiliary lifting appliance is used, whether the lifting appliance is damaged or not needs to be checked, and safety check work is well done. And (5) checking the surface cleaning condition of the flexible hanging strip, and if the surface is polluted by oil stains and the like, replacing the flexible hanging strip with a new one.

The second step is that: and (6) installing a lifting appliance. And loosening the locking bolt, adjusting the relative position of the thin-opening sliding pipe and the thick-opening sliding pipe according to the type of the composite material blade needing to be circulated, and locking the bolt for braking after the length of the sliding pipe meets the use requirement. The hanging ring is installed on a hook of the aviation hanging equipment, and the hanging ring is installed in place. Two flexible slings were mounted on either side of the center of gravity position of the composite blade. Both end buckles of the flexible hanging strip are arranged in a claw sliding hook of the special hoisting hanger, and a safety buckle is closed, so that the flexible hanging strip is ensured not to have the unexpected situations of slipping and the like.

The third step: and (4) moving the lifting appliance. And starting the aerial lifting equipment to enable the turnover auxiliary lifting appliance and the composite material blade to slowly move. In the process of the movement of the composite material paddle, two operators are needed to cooperate, the operators stand at the root and the tip of the paddle respectively, the movement direction of the paddle is controlled, and the accidental conditions of shaking, deflection, collision and the like in the movement process are prevented.

The fourth step: the storage and regular inspection of the lifting appliance. After the blade turnover auxiliary lifting appliance is used, the blade turnover auxiliary lifting appliance needs to be taken down from the aerial lifting equipment and placed at a fixed point for storage. After using certain cycle time, need to deliver to the detection department with paddle turnover auxiliary hoist and carry out special performance inspection, guarantee the security of hoist and mount hoist use.