KR20110024081A - Transfer truck for wind turbine - Google Patents

Abstract

PURPOSE: A transfer truck for a wind turbine is provided to disperse the load of the transfer truck by contacting wheels with a rail even if the rail is bent or twisted. CONSTITUTION: A transfer truck for a wind turbine comprises a truck body(100), wheel units(110), and elastic members(120). The wheel units are in contact with a rail(1) and are rotated. The wheel units are separated from each other. Each wheel unit comprises a wheel support and wheels separated from each other. The elastic members elastically press the wheel units so that the wheel units can be in contact with the rail.

Description

TRANSPORT TRUCK FOR WIND GENERATOR {TRANSFER TRUCK FOR WIND TURBINE}

The present invention relates to a wind power generator, and more particularly, to a wind turbine feed cart for moving along a rail provided inside the wind generator.

In general, power generation methods are largely classified into hydroelectric power generation, thermal power generation, and nuclear power generation. These power generation methods require large-scale power generation facilities. In addition, hydroelectric power generation has a regional limit that is only possible in some regions because dams must be constructed by blocking large rivers or lakes. On the other hand, thermal power plants require huge amounts of fuel such as coal and oil to operate large-scale power generation facilities, and oil and coal are not soon due to exponential fuel consumption due to the rapid economic growth of emerging countries. There is a problem facing depleted reality. In addition, nuclear power generation has a problem in that a large amount of radiation waste that is very deadly to the human body.

Due to these problems, in recent years, attention has been drawn to photovoltaic power generation using solar light, tidal power generation using sea level lifting motion, and wind power generation generating electricity by converting wind force into rotational force.

In particular, wind power generation is attracting attention as the next-generation energy source due to its advantages such as being the most economical and pollution-free energy source, which can be installed anywhere and has no environmental impact.

In general, a wind generator converts wind energy into mechanical energy and converts it into electrical energy to obtain electric power. The wind generator is provided at a support pillar, a nacelle provided at an upper end of the support pillar, and a front end of the nussel. And a rotor head equipped with a rotating blade, a main shaft connected to the rotor head to rotate together with the rotor head, a speed increaser for outputting the rotation of the main shaft at an increased speed, and an output of the speed increaser. It includes a generator and a control device for controlling each component.

Here, a plurality of parts such as the main shaft, the speed increaser, the generator and the control device are provided inside the nussel. Therefore, when exchanging consumable parts or exchanging parts due to failure, the doors provided in the nussel are opened to insert the parts into the nussel by a crane or the like. Thereafter, the inserted parts are moved to the exchange site using a transfer truck provided in the inner shell. On the other hand, the feed cart is also used to move the internal parts of the nussel to the outside. This transfer bogie moves along the rail provided inside the nussel. One example of a transfer bogie is shown in FIGS. 1A and 1B.

1A and 1B, the transport cart is provided with a bogie body 10, a wheel support 11 fixedly mounted to the bogie body 10, and wheels spaced apart in the front-rear direction from the wheel support 11. And (12). The wheel 12 has a pair of wheels 12 in contact with the rail (1), as shown in Figure 1a in the state that the rail 1 is not bent, so that a load is applied to each wheel 12 Evenly distributed.

However, the parts loaded on the transfer cart are often very heavy. For this reason, as illustrated in FIG. 1B, the rail 1 may be bent or deformed. In this case, any one of the wheels 12 of the pair of wheels 12 is spaced apart from the rail 1, and only the other wheel 12 is in contact with the rail 1 to load the transport carts. Support. Accordingly, the load is concentrated on one wheel 12, which causes the bearing 13 or the like to rotatably support the wheel 12 to be damaged or damaged, resulting in a decrease in its lifespan.

The present invention has been made in view of the above-described point, and an object thereof is to provide a transport generator for a wind generator capable of distributing the load of the transport truck by allowing all wheels to contact the rail even if the rail is bent or deformed. .

Wind turbine transport trolley according to the present invention for achieving the object as described above is to move along the rail inside the wind generator, a trolley body, a plurality of wheels rotated in contact with the rail and spaced apart in the front and rear directions And a wheel unit installed on the bogie body so as to be tilted in a vertical direction, and an elastic member for elastically pressing the wheel unit such that the plurality of wheels are pressed against the rail, and the rail is in a vertical direction. When the bent, the elastic member is characterized in that the inclined movement in the vertical direction by pressing the wheel unit so that the plurality of wheels in pressure contact with the rail.

According to an embodiment of the present invention, the wheel unit includes a wheel support that is installed to be inclined in the vertical direction in the bogie body, and a pair of the wheels that are spaced apart from each other in the front and rear direction on the wheel support.

On the other hand, the above-described transport trolley is installed on one side is fixed to the balance body, the other side is installed so as to be movable in the vertical direction on the wheel support, and may include a first and second guide shaft spaced apart from each other in the front and rear directions, The first and second guide shafts limit the forward and backward movement of the wheel support with respect to the trolley body, but allow the inclined movement of the wheel support in the vertical direction.

The elastic member includes first and second coil springs interposed between the wheel support and the trolley body, and each of the first and second guide shafts is inserted into each of the first and second coil springs to form the first and second coil springs. Guide the stretching movement of the first and second coil springs.

According to another embodiment of the present invention, the elastic member is interposed between the wheel support and the cart body to surround the first and second guide shaft.

According to another embodiment of the invention, the wheel support is hinged to the balance body, the elastic member is interposed between the wheel support and the balance body so that the wheel support is pressed in the rail direction.

According to the problem solving means as described above, even if the rail is bent by the wheel unit which is installed in the bogie body in the up-down direction so as to be inclined and the elastic member which elastically presses the wheel unit so that the plurality of wheels are pressed against the rail. All of the plurality of wheels may be in pressure contact with the rail, thereby preventing the load from being concentrated on any one of the wheels.

That is, by uniformly distributing the load to the plurality of wheels, it is possible to prevent the phenomenon that the load is concentrated on the bearing or the like and the bearing is broken or damaged and the life is shortened.

In addition, since the wheel support of the wheel unit is inclined in the vertical direction, the wheel does not need to be movable in the vertical direction to the wheel support, thereby ensuring the safety of movement of the transport cart.

In addition, the front and rear movement of the wheel support by the first and second guide shafts spaced apart in the front and rear direction, while also allowing the vertical movement of the wheel support inclined, so that the feed cart can move stably along the rail do.

Further, by configuring the elastic member as the first and second coil springs and inserting each of the first and second guide shafts into the coil spring to guide the stretching movement of the coil spring, a guide for a separate coil spring is not necessary. As a result, the structure of the conveyance bogie can be simplified and the coil spring can be prevented from being separated from the conveyance bogie.

On the other hand, the elastic member is interposed between the wheel support and the cart body so as to surround the first and second guide shaft, it is possible to prevent the first and second guide shaft from being damaged or broken by an external impact. In addition, it is possible to prevent foreign matter from penetrating into the first and second guide shafts.

In addition, the wheel support is hinged to the balance body, it is possible to further simplify the structure of the transport balance.

Hereinafter, a transfer truck for a wind generator according to an embodiment of the present invention will be described in detail.

2A and 2B, a wind turbine generator for a wind power generator according to an embodiment of the present invention includes a bogie body 100 and a wheel unit 110 installed on the bogie body 100 so as to be inclined in a vertical direction. And an elastic member 120 interposed between the wheel unit 110 and the cart body 100 to press the wheel unit 110.

The balance main body 100 forms a skeleton of a transport balance, and a lifting device for lifting up and down parts of a wind generator, such as a winch, is installed. Typically, a wind generator is provided with a nussel (not shown) on top of a support column (not shown). Inside the nussel is a component for power generation, such as a generator, a gearbox, a transformer. Therefore, in order to replace the above-mentioned parts, it is necessary to transfer the parts inside the nussel by a crane or the like. At this time, the parts transported by the crane is transferred to the interior of the nussel through the door provided in the nussel. However, it is not possible to transfer the parts to the exchange place in the nussel by the crane unless the nussel is completely removed to completely open the top of the nussel. For this reason, a rail is provided inside the nussel, and the conveyance trolley is moved along the rail to move the part to an exchange place. In addition, the parts must be moved inside the nussel for maintenance such as repairing the parts, and even in this case, the parts are lifted or moved to the enemy place through the transfer truck.

However, when the load of the replacement parts is excessive, the rail 1 may be bent or changed, which causes one of the wheels 112 of the transport cart to be spaced apart from the rail 1 so that the load on the remaining wheels 112 may be increased. Concentrated, the bearing 113 for supporting the wheel 112, etc. are damaged or damaged to shorten the life.

For this reason, in the present embodiment, even if the rail 1 is deformed or bent, the wheel unit 110 may be tilted so that all the wheels 112 may contact the rail 1 to distribute the load. 100). Hereinafter, a structure in which the wheel unit 110 may tilt may be described in more detail.

The wheel unit 110 includes a wheel support 111, a wheel 112, and a bearing 113.

The wheel support 111 is for rotatably supporting the wheel 112 via the bearing 113, and is installed in the bogie body 100 to be inclined. More specifically, the wheel support 111 is connected to the balance body 100 by the first and second guide shafts (130a, 130b) spaced apart from each other in the front and rear direction.

The first and second guide shafts (130a, 130b) is installed so that the upper side is fixed to the bogie body 100, the lower side is installed to be movable in the vertical direction on the wheel support 111. As a result, the wheel support 111 can be linearly moved in the vertical direction with respect to the trolley body 100, and between the wheel support 111 and the first and second guide shafts 130a and 130b. By the play, the wheel support 111 can be tilted up and down.

When describing the inclined motion of the wheel support 111 in more detail, when the front end of the wheel support 111 is inclined downward, the wheel support 111 along the second guide shaft (130b) It moves upward and moves downward along the first guide shaft 130a. On the contrary, when the front end of the wheel support 111 is inclined upward, the wheel support 111 moves downward along the second guide shaft 130b and along the first guide shaft 130a. Will move upward. In this case, the amount of movement in the front-rear direction required during the vertical tilt movement of the wheel support 111 may be secured by the clearance between the wheel support 111 and the first and second guide shafts 130a and 130b. Here, since the deformation amount of the rail 1 is very small, the clearance between the first and second guide shafts 130a and 130b and the wheel support 111 is set very small.

That is, the wheel support 111 can be moved very minutely in the front-rear direction by the play with the first and second guide shafts 130a and 130b, but the further forward and rearward movements of the wheel support 111 It is limited by the two guide shafts 130a and 130b.

On the other hand, the wheel support 111 is arranged to be spaced apart from each other in the front and rear and left and right directions of the balance body 100 may be able to stably support the balance body 100. However, unlike the present embodiment, the arrangement and the number of the wheel support 111 may be variously changed as long as it can stably support the bogie body 100. Thus, the arrangement and the number of the wheel support 111 are Changes are included in the technical spirit of the present invention.

The wheel 112 is provided with a pair of one wheel support 111 spaced apart from each other in the front-rear direction. However, unlike the present embodiment, three or more wheels 112 may be installed on one wheel support 111.

The bearing 113 is interposed between the wheel 112 and the rotation shaft 114 of the wheel support 111 to rotatably support the wheel 112. The structure in which the bearing 113 rotatably supports the wheel 112 is already known and thus a detailed description thereof will be omitted.

The elastic member 120 is installed between the wheel support 111 and the cart body 100 to press the wheel support 111 in the direction of the rail 1. The elastic member 120 includes a first coil spring 120a inserted into the first guide shaft 130a and a second coil spring 120b inserted into the second guide shaft 130b. Each of the first and second guide shafts 130a and 130b is inserted into each of the first and second coil springs 120a and 120b. Due to this structure, the first and second guide shafts 130a and 130b not only guide the stretching movement of the first and second coil springs 120a and 120b but also the first and second coil springs. Prevents 120a and 120b from escaping. Therefore, a member for guiding the stretching motion of the first and second coil springs 120a and 120b and a separate member for preventing the separation of the first and second coil springs 120a and 120b are omitted. This makes it possible to simplify the structure of the transfer bogie.

Hereinafter, the operation and effect of the transfer truck having the configuration as described above will be described.

As shown in FIG. 2A, when the load is small or the rigidity of the rail 1 is large and the rail 1 is not bent, the first and second coil springs 120a and 120b are shown. Presses the wheel support 111 downward, whereby the pair of wheels 112 are in contact with the rail 1 with the same pressing force.

On the other hand, as shown in Figure 2b, when the rail (1) is bent or deformed, the rear wheel support 111 is the front end portion by the elastic force of the first and second coil springs (120a) (120b) It moves downward along the first guide shaft 130a, and the rear end of the wheel support 111 moves upward along the second guide shaft 130b. As a result, the rear wheel support 111 is inclined downward so that the pair of front and rear wheels 112 are in contact with the rail 1. Accordingly, the rail 1 is bent or deformed so that the load is concentrated on only one wheel 112 to the pair of wheels, and thus, the bearing 113 and the like are damaged or damaged, resulting in a long service life. The shortening can be prevented. On the other hand, the wheel support 111 of the front can also be supported in a state in which the wheel 112 of the upper one is pressed on the rail (1). However, the front wheel support 111 is inclined in the opposite direction to the above-described rear wheel support 111, as shown in Figure 2b.

3a and 3b is a view schematically showing a feed cart for a wind generator according to another embodiment of the present invention. In other embodiments of the present invention, the same reference numerals are given to the same configurations as the embodiments of the present invention.

3A and 3B, another embodiment of the present invention replaces the first and second coil springs 120a and 120b of one embodiment of the present invention with an elastic member 220 having elasticity in the material itself. I use it.

In particular, in this embodiment, the elastic member 220 is installed to surround the first and second guide shafts (130a, 130b) to protect the first and second guide shafts (130a, 130b) from external impact Of course, it is possible to prevent foreign matter from penetrating the first and second guide shafts (130a, 130b). Here, since the first and second guide shafts 130a and 130b and the wheel support 111 perform relative movements, the first and second guide shafts 130a and 130b and the wheel support 111 may be used. There is a sliding part in between. When foreign matter penetrates the sliding part, the wheel support 111 and the first and second guide shafts 130a and 130b may not perform relative movements, whereby the wheel support ( 111 may not be able to tilt up and down. In order to prevent this problem in advance, the elastic member 220 of the present embodiment. As an example of the elastic member 220, a rubber or a leaf spring formed to surround the first and second guide shafts 130a and 130b may be applied.

Except for the elastic member 220 described above, the rest of the configuration is the same as the embodiment of the present invention, detailed description thereof will be omitted.

4A and 4B are diagrams schematically showing a transport cart according to another embodiment of the present invention.

In another embodiment of the present invention, unlike the embodiment described above, the wheel support 111 is hinged to the balance body 100. Therefore, in the present embodiment, the first and second guide shafts 130a and 130b of the above-described embodiments may be omitted, thereby further simplifying the structure of the transport cart.

More specifically, first and second hinge plates 330a and 330b are provided on the upper surface of the wheel support 111 and the lower surface of the cart body 100, respectively, and the first and second hinge plates 330a are provided. The 330b is rotatably coupled to the pin 331. Then, the wheel support 111 can be coupled to the vertical movement inclined with respect to the balance body 100.

On the other hand, the elastic member 320 is interposed between the wheel support 111 and the cart body 100 to surround the first and second hinge plates 330a, 330b. However, unlike the present embodiment, the elastic member 320 may be provided with elastic members at the front and rear of the first and second hinge plates 330a and 330b, respectively, and the first and second hinge plates 330a. May be replaced by a torsion spring between 330b and pin 331.

As in this embodiment, by hinge-bonding the cart body 100 and the wheel support 111, all the wheels 112 can be grounded to the deformed rail (1) while the structure is simplified.

In the present embodiment, the configuration except for the hinge plates 330a and 330b and the elastic member 320 described above is the same as the above-described embodiments, and thus a detailed description thereof will be omitted.

1a and 1b is a conceptual diagram schematically showing a transfer bogie for a conventional wind power generator,

2a and 2b is a conceptual diagram schematically showing a feed cart for a wind generator according to an embodiment of the present invention,

3a and 3b is a conceptual diagram schematically showing a feed cart for a wind generator according to another embodiment of the present invention,

4a and 4b is a conceptual diagram schematically showing a feed cart for a wind generator according to another embodiment of the present invention.

DESCRIPTION OF THE REFERENCE NUMERALS OF THE DRAWINGS

One; Rail 100; Bogie body

110; Wheel unit 111; Wheel support

112; Wheels 120, 220, 320; Elastic member

130a, 130b; First and second guide shaft

Claims (6)

In the transfer truck for a wind generator moving along the rail inside the wind generator, Balance body; A wheel unit having a plurality of wheels which are rotated in contact with the rail and spaced apart from each other in the front-rear direction, and are installed to be inclined in the vertical direction in the trolley body; And It includes an elastic member for elastically pressing the wheel unit such that the plurality of wheels in pressure contact with the rail, When the rail is bent in the vertical direction, the transfer member for a wind generator characterized in that the elastic member presses the wheel unit inclined movement in the vertical direction so that the plurality of wheels in pressure contact with the rail. The method of claim 1, The wheel unit, Wheel support is installed in the bogie body to be inclined in the vertical direction; And A transport cart for a wind power generator comprising a pair of the wheels spaced apart from each other in the front-rear direction on the wheel support. The method of claim 2, One side is fixedly installed in the bogie body, the other side is installed to be movable in the vertical direction on the wheel support, and includes a first and second guide shaft spaced apart in the front and rear direction, The first and second guide shafts limit the forward and backward movement of the wheel support relative to the bogie body, and allow for the tilt movement of the wheel support in the up and down direction. The method of claim 3, wherein The elastic member, First and second coil springs interposed between the wheel support and the balance body, Each of the first and second guide shafts is inserted into each of the first and second coil springs to guide the stretching movement of the first and second coil springs. The method of claim 3, wherein The elastic member, Transport cart for wind generators, characterized in that interposed between the wheel support and the bogie body to surround the first and second guide shaft. The method of claim 2, The wheel support is hinged to the bogie body, The elastic member is a carriage for the wind generator, characterized in that interposed between the wheel support and the bogie body so that the wheel support is pressed in the rail direction.

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