Universal hoisting beam for hoisting main engine of wind generating set

Abstract

The utility model discloses a universal hoisting beam for hoisting a main machine of a wind generating set, which comprises a main beam, a fixed branch beam and a movable branch beam, a fixed hoisting hole is arranged on one side of the top of the main beam, and a row of adjustable hoisting holes are arranged on the other side of the top of the main beam. Fixed connecting holes used for being connected with the fixed branch beams are formed in the bottom of the main beam and located under the fixed hoisting holes, a row of adjustable connecting holes used for being connected with the movable branch beams are formed in the bottom of the main beam and located under the adjustable hoisting holes, and the tops of the fixed branch beams are connected with the fixed connecting holes. A row of lifting points used for being connected with a host are arranged at the bottom of the movable strut beam in the length direction of the movable strut beam, one adjustable connecting hole is selected to be connected with the top of the movable strut beam according to the distance between the front lifting points and the rear lifting points of the host, and a row of lifting points used for being connected with the host are arranged at the bottom of the movable strut beam in the length direction of the movable strut beam. The lifting device can be universally used for lifting working conditions of three or four lifting points of all units, so that resources are saved, and the cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of wind power generation, especially a universal lifting beam for hoisting a main machine of a wind power generating set. BACKGROUND

[0002] In recent years, with the rapid development of the wind power generation industry, wind power generating sets are increasing in number and weight, and the cost of production and assembly of the wind power generating sets is increasing, especially the lifting beam used for hoisting the main machine, which can only be used for a certain type of machine due to the difference between the machines, has high cost and poor universality, and after being used for a certain type of machine, the lifting beam is left in the material storage workshop, occupying storage resources and causing serious waste of resources. SUMMARY

[0003] The utility model aims at overcoming the defects of the prior art and providing a universal lifting beam for hoisting a main machine of a wind power generating set, which has strong universality, can be used for hoisting all wind power generating sets at three or four hoisting points, saves resources and reduces cost.

[0004] The utility model achieves the above-mentioned purpose through the following technical scheme.

[0005] A universal lifting beam for hoisting a main machine of a wind power generating set comprises a main beam, a fixed supporting beam and a movable supporting beam, one side of the top of the main beam is provided with a fixed hoisting hole for connecting with a hoisting device, the other side of the top of the main beam is provided with a row of adjustable hoisting holes for connecting with the hoisting device, the fixed hoisting hole is connected with the hoisting device, and then one of the adjustable hoisting holes is selected to be connected with the hoisting device according to the distance between the front and rear hoisting points of the main machine, the bottom of the main beam and directly below the fixed hoisting hole are provided with a fixed connecting hole for connecting with the fixed supporting beam, the bottom of the main beam and directly below the adjustable hoisting hole are provided with a row of adjustable connecting holes for connecting with the movable supporting beam, the top of the fixed supporting beam is connected with the fixed connecting hole, the bottom of the fixed supporting beam is provided with a row of hoisting points for connecting with the main machine along the length direction of the fixed supporting beam, one of the adjustable connecting holes is selected to be connected with the top of the movable supporting beam according to the distance between the front and rear hoisting points of the main machine, and the bottom of the movable supporting beam is provided with a row of hoisting points for connecting with the main machine along the length direction of the movable supporting beam.

[0006] Further, the main body of the fixed supporting beam is a box structure with a variable cross section, the top of the main body of the fixed supporting beam is provided with two symmetrical lifting lug holes, the two lifting lug holes and the fixed connecting hole are connected through a pin shaft, the hoisting points at the bottom of the fixed supporting beam include a central hoisting point arranged at the center of the bottom and two groups of first hoisting points symmetrically distributed left and right around the central hoisting point, the central hoisting point is used for forming a three-point hoisting structure with any two second hoisting points of the movable supporting beam, the first hoisting points are used for forming a four-point hoisting structure with any two second hoisting points of the movable supporting beam, and each hoisting point is connected with a hoisting point of the main machine through a shackle and a sling.

[0007] Further, the main body of the mobile support beam is a variable cross-section box structure, the top of which is provided with two symmetrically arranged lifting lug holes, the two lifting lug holes are connected with the adjustable connecting holes through a pin shaft, the lifting points at the bottom of the main body include two groups of second lifting points which are symmetrically distributed around the central axis of the mobile support beam, each lifting point is connected with the lifting point of the main machine through a shackle and a lifting belt.

[0008] Further, the number of the adjustable lifting holes is the same as or different from the number of the adjustable connecting holes, the adjustable lifting holes and the fixed lifting holes are respectively connected with the lifting hooks of the lifting device through shackles and lifting belts.

[0009] Further, the main beam is provided with a counterweight beam at one end close to the fixed support beam, the counterweight beam makes the gravity center of the lifting beam on the vertical line of the lifting hook of the lifting device and the gravity center of the main machine.

[0010] Further, one end of the counterweight beam is a box structure without a top cover, used for placing a counterweight plate, and the other end is detachably connected with the main beam.

[0011] Further, the bottom of the counterweight beam is provided with supporting legs for stable placement on the ground.

[0012] Further, the pin shaft is machined from round steel, and the two ends are provided with threaded holes for connecting bolts, the pin shaft is inserted into the fixed connecting hole or the adjustable connecting hole and the corresponding lifting lug hole, and then the pin shaft is axially limited by the bolts and the stop plate.

[0013] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0014] 1、The lifting beam of the utility model has strong universality, the relative positions of three or four lifting points on the lifting beam are adjusted by changing the lifting hole mounting positions on the main beam, the fixed support beam and the mobile support beam, so as to adapt to the differences of different machine groups, and the lifting beam can be used for the lifting working conditions of three or four lifting points of all wind turbine generators.

[0015] 2、The utility model comprises a plurality of counterweight plates and a counterweight beam, and the counterweight plates and the counterweight beam are arranged in multiple layers.

[0016] 3、The utility model adopts detachable connection between components, has simple structure, is easy to obtain materials, has low manufacturing cost, and is convenient for transportation and storage.

[0017] 4、The main body structures of the fixed support beam and the mobile support beam are variable cross-section structures, so that the structure is more compact, material waste is avoided, and the overall weight of the lifting beam is reduced.

[0018] 5, The hoisting point above the main beam is synchronously adjusted with the moving support beam, so that the main beam is basically not subjected to bending moment, the stress state of the main beam can be improved, and the rated load of the main beam can be improved under the same structure. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structure schematic view of the universal hoisting beam of the utility model.

[0020] Figure 2 It is a hoisting schematic view of the universal hoisting beam of the utility model.

[0021] Figure 3 It is a structure schematic view of the fixed support beam of the utility model.

[0022] Figure 4 It is a structure schematic view of the moving support beam of the utility model.

[0023] Figure 5 It is a structure schematic view of the main beam of the utility model.

[0024] Figure 6 It is a structure schematic view of the counterweight beam of the utility model.

[0025] Figure 7 It is a structure schematic view of the pin shaft of the utility model. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0027] As Figures 1 to 2As shown, the embodiment provides a universal lifting beam for hoisting wind turbine main machine, which comprises a main beam 1, a fixed support beam 2 and a movable support beam 3. One side of the top of the main beam 1 is provided with a fixed lifting hole 101 for connecting with a lifting device 5 (such as a crane), and the other side of the top of the main beam 1 is provided with a row of adjustable lifting holes 102 for connecting with the lifting device 5. The fixed lifting hole 101 is connected with the lifting device 5, and then one of the adjustable lifting holes 102 is selected to be connected with the lifting device 5 according to the distance between the front and rear hoisting points of the main machine. The bottom of the main beam 1 and directly below the fixed lifting hole 101 is provided with a fixed connection hole 103 for connecting with the fixed support beam 2, and the bottom of the main beam 1 and directly below the adjustable lifting hole 102 is provided with a row of adjustable connection holes 104 for connecting with the movable support beam 3. The top of the fixed support beam 2 is connected with the fixed connection hole 103, and the bottom of the fixed support beam 2 is provided with a row of hoisting points along the length direction of the fixed support beam 2 for connecting with the main machine 8. One of the adjustable connection holes 104 is selected to be connected with the top of the movable support beam 3 according to the distance between the front and rear hoisting points of the main machine. The bottom of the movable support beam 3 is provided with a row of hoisting points along the length direction of the movable support beam 3 for connecting with the main machine 8.

[0028] As shown in the drawings, Figure 3 The main body 201 of the fixed support beam 2 is a box structure with variable cross-section, which is welded by steel plates. The box structure makes the structure more compact and avoids material waste. The top of the fixed support beam 2 is provided with two symmetrical lifting lug holes 202, which are connected with the fixed connection hole 103 through a pin shaft 7. The hoisting points at the bottom of the fixed support beam 2 include a central hoisting point 203 arranged at the center of the bottom and two groups of first hoisting points 204 symmetrically distributed left and right around the central hoisting point 203. The central hoisting point 203 is used to form a three-point hoisting structure with any two second hoisting points 303 of the movable support beam 3, and the first hoisting points 204 are used to form a four-point hoisting structure with any two second hoisting points 303 of the movable support beam 3. Each hoisting point is connected with the hoisting point of the main machine through a shackle and a sling.

[0029] As shown in the drawings, Figure 4 The main body 301 of the movable support beam 3 is similar to the fixed support beam 2, which is a box structure with variable cross-section, welded by steel plates. The box structure makes the structure more compact and avoids material waste. The top of the movable support beam 3 is provided with two symmetrical lifting lug holes 302, which are connected with the adjustable connection hole 104 through a pin shaft 7. The hoisting points at the bottom of the movable support beam 3 include two groups of second hoisting points 303 symmetrically distributed left and right around the central axis of the movable support beam 3. Each hoisting point is connected with the hoisting point of the main machine through a shackle and a sling.

[0030] As shown in the drawings, Figure 5 The main beam 1 can be welded by steel plates and steel pipes. The number of adjustable lifting holes 102 is the same as or different from the number of adjustable connection holes 104.

[0031] The adjustable lifting hole 102 and the fixed lifting hole 101 are connected with the hooks of the lifting device 5 through the shackles 6 and the lifting belts 7 respectively, and the shackles on the main beam 1 are not directly connected with the hooks, but a shackle adapter is used between them. The main reason is that the center of gravity of the main machine is generally not in the middle of the four lifting points, but often deviates to one side of the lifting point, resulting in that the forces of the two lifting belts above the main beam 1 have certain difference. The hook of the crane is generally in the shape of a mountain, and the lifting belts are distributed on both sides of the hook, resulting in that the hook of the crane has a risk of inclination. After the shackle adapter is used in the embodiment, the risk can be effectively avoided.

[0032] During lifting, the adjustable lifting hole 102 is connected with the lifting device 5 according to the distance between the front and rear lifting points of the main machine, and the adjustable connecting hole 104 is connected with the top of the movable support beam 3 according to the distance between the front and rear lifting points of the main machine, so that the lifting points below the two support beams can be above the main machine lifting points. In this way, the two support beams and the main machine lifting points can not be subjected to the inclined tension, which greatly improves the stress state of the lifting beam and the main machine lifting point, so that the structure design of the lifting beam and the main machine lifting point is lighter, and the processing and manufacturing cost is reduced.

[0033] As shown in Figure 6 The main beam 1 is provided with a counterweight beam 4 near one end of the fixed support beam 2, which can be welded by a steel plate and an H-shaped steel. The counterweight beam 4 makes the center of gravity of the lifting beam on the vertical line of the hook of the lifting device 5 and the center of gravity of the main machine, so that the inclination angle of the lifting beam during lifting can be prevented from being large, and interference between the lifting tool and the main machine or other components can be avoided. At the same time, through the multi-layer counterweight, the increase and decrease are convenient, and the overall center of gravity of the lifting beam can be quickly adjusted.

[0034] One end of the counterweight beam 4 is a box structure 401 without a top cover, which is used to place the counterweight plate 6, and the other end is detachably connected with the main beam 1. The bottom of the counterweight beam 4 is provided with support legs (not shown in the figure) for stably placing on the ground. By designing the counterweight beam 4 and the main beam 1 separately, the length of the main beam 1 can be reduced, and transportation is facilitated.

[0035] As shown in Figure 7 The pin shaft 7 is processed from round steel, and the two ends are provided with threaded holes for connecting bolts. The pin shaft 7 is inserted into the fixed connecting hole or the adjustable connecting hole and the corresponding lifting lug hole, and then the pin shaft 7 is axially limited by the bolts and the baffle.

[0036] The lifting beam of the embodiment can be used for lifting all models of three or four lifting points, such as main machine and hub lifting, main machine lifting, etc., which is widely applicable and suitable for promotion.

[0037] The above merely describes preferred embodiments of the present utility model patent, but the protection scope of the present utility model patent is not limited thereto, and any person skilled in the art, within the scope disclosed by the present utility model patent, can make equivalent replacements or changes to the technical scheme and the utility model patent concept of the present utility model patent, and all of them belong to the protection scope of the present utility model patent.

Claims

1. A universal beam for hoisting a main machine of a wind turbine generator system, characterized in that: The main beam is provided with a fixed hoisting hole on one side of the top for connecting with the hoisting device, and a row of adjustable hoisting holes on the other side of the top for connecting with the hoisting device.

2. The universal beam for hoisting of a main machine of a wind turbine generator set according to claim 1, characterized in that: The main body of the fixed beam is a box structure with variable cross section, and the top of the fixed beam is provided with two symmetrical lifting lug holes connected with the fixed connection hole through a pin shaft.

3. The universal beam for hoisting of a main machine of a wind turbine generator set according to claim 1, characterized in that: The main body of the movable beam is a box structure with variable cross section, and the top of the movable beam is provided with two symmetrical lifting lug holes connected with the adjustable connection hole through a pin shaft.

4. The universal beam for hoisting of a main machine of a wind turbine generator set according to claim 1, characterized in that: The number of the adjustable hoisting holes is the same as or different from the number of the adjustable connection holes.

5. The universal beam for wind turbine main shaft hoisting according to claim 1, characterized in that: The end of the counterweight beam close to the fixed beam is provided with a counterweight beam, and the center of gravity of the hoisting beam is on the vertical line of the hook of the hoisting device and the center of gravity of the main machine.

6. The universal beam for hoisting of a main machine of a wind power generator set according to claim 5, characterized in that: The end of the counterweight beam close to the fixed beam is provided with a counterweight beam, and the center of gravity of the hoisting beam is on the vertical line of the hook of the hoisting device and the center of gravity of the main machine.

7. The universal beam for hoisting of wind turbine main shaft as claimed in claim 5 wherein: The bottom of the counterweight beam is provided with a support leg for stable placement on the ground.

8. The universal beam for hoisting of a main machine of a wind turbine generator set according to claim 2 or 3, characterized in that: The pin shaft is made of round steel, and the two ends of the pin shaft are provided with threaded holes for connecting bolts.

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