JP7304478B1 - trailer - Google Patents

Abstract

A trailer 1 capable of traveling in various situations is provided. A trailer (1) for transporting a long transported object such as blades (blades) of a wind turbine used for wind power generation, the trailer (1) includes a vehicle body (2) having wheels (21), and a vehicle body (2). 2 and has a fixed portion 31 to which one end side of the object to be transported is fixed, the loading platform 3 rotates the object to be transported about an axis extending in an extending direction of the object to be transported as a rotation axis. It has a rotating mechanism 311 for rotating. [Selection drawing] Fig. 3

Description

The present invention relates to a trailer for transporting long objects.

In recent years, wind power generation has attracted attention as a means of obtaining renewable energy. The wind turbines used for this wind power generation are transported to the installation site by trailers towed by tractor heads. This wind turbine is transported by being loaded on a trailer in a state in which the strut and the blades (blades) are separated. Wind turbine struts are often divided into multiple parts and transported, but wind turbine blades are usually transported in a long form. In addition, the blade is not just a cylinder, but has an irregular shape with a slightly flattened tip. As a trailer for transporting a long and deformed object such as a blade, the trailers disclosed in Patent Documents 1 and 2 have been proposed. Patent Document 1 and Patent Document 2 disclose a standing mechanism that raises a transported object by swinging a portion to which the transported object is fixed, and a turning mechanism that horizontally rotates a loading platform on which the transported object is loaded. A trailer with a mechanism is disclosed. According to the trailers of Patent Documents 1 and 2, when there is a risk that the object to be transported may come into contact with a building, an overhead wire, a mountain or a hill while the object is being transported, the standing mechanism and the turning mechanism are used. By making full use of it to avoid contact, it is possible to increase the number of situations in which the trailer loaded with the object to be transported can run.

Japanese Patent Application Laid-Open No. 2020-189501 JP 2004-243805 A

However, in recent years, there has been a demand for trailers that can carry long objects such as blades in a wide variety of shapes and that can be driven in more situations.

SUMMARY OF THE INVENTION An object of the present invention is to provide a trailer that can be driven in various situations.

The trailer of the present invention, which solves the above objects,
A trailer for transporting a long object,
a vehicle body having wheels;
A rotating mechanism arranged on the vehicle body for rotating the object to be transported about an axis extending in an extending direction of the object to be transported, a loading platform base on which the loading object is placed, and the loading platform. a loading platform having a fixed portion that is swingable with respect to a base and to which one end side of the object to be transported is fixed;
an erecting mechanism for erecting the transported object by swinging the fixed portion with respect to the carrier base;
and a tilting mechanism for tilting the loading platform so that the one end side of the object to be transported fixed to the loading platform faces upward.
In addition, a trailer for transporting a long object to be transported,
a vehicle body having wheels;
a carrier arranged on the vehicle body and fixed to one end of the object to be transported;
The trailer may be characterized in that the loading platform has a rotating mechanism that rotates the object to be transported about an axis extending in an extending direction of the object to be transported.

According to this trailer, when the object to be transported has a shape that protrudes upward or sideways, the projecting direction can be changed by rotating the object to be transported by the rotating mechanism, so that the trailer can travel. situation can be increased.

Here, the loading platform has a fixed surface to which the object to be transported is fixed, and the rotating mechanism uses the fixed surface with an axis extending in the extension direction from the central portion of the fixed surface as the rotational axis. It may be rotated. Moreover, the fixed surface may be a surface that extends in a direction generally perpendicular to the rotation axis.

In this trailer
A turning mechanism may be provided for horizontally turning the cargo bed by at least 180 degrees with respect to the vehicle body.

By turning the loading platform horizontally by 180 degrees, the long object to be transported can be extended from the loading platform toward the tractor head. As a result, the tractor head and the object to be transported overlap in the longitudinal direction, so that the total length from the front end to the rear end of the tractor head, the trailer and the object to be transported is shortened. By shortening the overall length, it is possible to increase the number of curves and intersections that can be traveled.

Also, in this trailer,
The loading platform is connected to the vehicle body so as to be able to rotate in a horizontal direction with respect to the vehicle body, and the loading platform rotates relative to the vehicle body so that a predetermined portion of the loading platform is wider than the vehicle body. The vehicle body may have auxiliary wheels projecting downward from the predetermined portion in a state of projecting outward in the width direction of the vehicle body.

Even if the center of gravity of the object to be transported is located on the outside in the width direction of the vehicle body, the auxiliary wheels suppress the inclination of the trailer in the width direction, so that the object to be transported can be prevented from greatly inclining. As a result, since the angle at which the loading platform can turn is widened, it is possible to increase the number of situations in which the trailer can travel while loading various objects on the loading platform and rotating the trailer.

Furthermore, in this trailer,
A tilting mechanism may be provided for tilting the loading platform so that the one end side of the object to be transported fixed to the loading platform faces downward.

For example, when the object to be transported has a doglegged shape, the rotation by the rotating mechanism and the tilting by the tilting mechanism are combined to prevent the object from contacting the road surface. In addition, the maximum height of the transported object loaded on this trailer can be reduced. This allows the trailer loaded with the object to be transported to travel on a road with a height restriction such as a short tunnel.

Also, in this trailer,
The loading platform has a loading platform base on which the object to be transported is placed, and a fixing part that is swingable with respect to the loading platform base and to which the one end side of the loading object is fixed,
An erecting mechanism may be provided for erecting the transported object by swinging the fixed portion with respect to the carrier base.

According to this trailer, since the extending direction of the object to be transported can be changed upward by the erecting mechanism, the situations in which the object can be traveled can be increased. Further, when rotating the object to be transported by the rotation mechanism, the object to be transported is slightly erected by the erecting mechanism to move the object to be transported away from the loading platform base, thereby damaging the object to be transported. can be easily rotated without

Here, the erecting mechanism may lift the object to be transported from the loading platform base and separate it from the loading platform base.

Additionally, in this trailer,
The vehicle body may be capable of changing the arrangement of the wheels to the outside in the width direction of the vehicle body.

By doing this, when the center of gravity of the object to be transported is deviated from the center of the vehicle body in the width direction, or when the center of gravity of the object to be transported is deviated from the center of the vehicle body in the width direction, the wheel is positioned outside the width direction of the vehicle body, the inclination of the trailer in the width direction is suppressed. As a result, it is possible to prevent the object to be transported from greatly tilting. On the other hand, the normal arrangement of the wheels prevents the maximum width of the trailer from becoming too wide, allowing it to travel on narrow roads.

ADVANTAGE OF THE INVENTION According to this invention, the trailer which can drive|work in various conditions can be provided.

1 is a right side view of a trailer according to an embodiment of the present invention; FIG. Figure 2 is an exploded perspective view of the trailer shown in Figure 1; FIG. 2 is a perspective view of the trailer shown in FIG. 1 as seen obliquely from the front and above; FIG. 2 is a top view of the loading platform of the trailer shown in FIG. 1 turning; FIG. 2 is a view of the loading platform of the trailer shown in FIG. 1 turned 90 degrees, as seen from the rear of the trailer; FIG. 2 is a perspective view of the loading platform of the trailer shown in FIG. 1 rotated 180 degrees and one end side of the loading platform raised, as seen from the rear and obliquely above the trailer; It is the figure which looked at a mode that the one end side of the loading platform of the trailer shown in FIG. 1 was raised from the right side of the trailer. FIG. 2 is a view of the trailer shown in FIG. 1 with one end side of the loading platform lowered as viewed from the right side of the trailer; FIG. 2 is a diagram of a state in which a fixing portion provided on a loading platform of the trailer shown in FIG. 1 is inclined, as viewed from the upper right side of the trailer; (a) is a top view of the wheels of the trailer shown in FIG. 1 arranged on the inside in the width direction of the vehicle body, and (b) is a part of the wheels of the trailer shown in FIG. 1 is a top view showing a state in which is arranged on the outside in the width direction of the vehicle body. FIG.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. A trailer, which is one embodiment of the present invention, is connected to a tractor head for transporting long objects.

FIG. 1 is a view of a trailer corresponding to one embodiment of the present invention viewed from the right side of the trailer. FIG. 1 also shows a tractor head 90 and blades B of a windmill, which is an example of a transported object.

As shown in FIG. 1, the trailer 1 includes a vehicle body 2, a loading platform 3, a turning mechanism 4, and a first cylinder 5 (see FIG. 7). A trailer 1 coupled to a tractor head 90 is shown in FIG. Note that the tractor head 90 and the trailer 1 can be disconnected and reconnected. Therefore, this trailer 1 can be connected with many types of tractor heads 90 . The trailer 1 is connected to the tractor head 90 so as to be horizontally rotatable with respect to the tractor head 90 . A blade B shown in FIG. 1 is a long blade used for wind power generation, and as an example, has a length of 45 m in the extending direction and a weight of 11 t. The length and weight of the blade B are various, and the shape is also various. Since the total length of the trailer 1 of this embodiment is approximately 18 m, the blade B is an object to be transported that is longer than the trailer 1 .

The vehicle body 2 generally extends in the front-rear direction. In addition, the vehicle body 2 has a front portion connected to the tractor head 90 positioned slightly above the other portions, and the upper surface of the vehicle body 2 is generally horizontally widened. The vehicle body 2 has a plurality of wheels 21 on its rear portion. Although only the three wheels 21 arranged on the rightmost side of the vehicle body 2 are shown in FIG. 1, a plurality of wheels 21 are arranged in the width direction of the vehicle body 2 . The right side of the vehicle body 2 is the front side of the paper surface in FIG. 1, and the width direction of the vehicle body 2 is the direction orthogonal to the paper surface in FIG. Hereinafter, the row of wheels 21 arranged in the width direction of the vehicle body may be referred to as a wheel row. Further, the trailer 1 can have four or more wheel rows by adding wheel rows to the rear end portion. FIGS. 2, 3, 4, 7 and 8 show the trailer 1 with four additional wheel trains.

The loading platform 3 is arranged on the vehicle body 2 . The cargo bed 3 has a cargo bed base 30 , a fixed portion 31 and a second cylinder 32 . The loading platform 3 is connected to the vehicle body 2 via a turning mechanism 4 . The carrier base 30 is a portion on which a portion of a predetermined length range from one end of the blade B is placed. The fixed portion 31 has a fixed frame 310 standing upward from one end portion of the loading platform base 30 . One end side portion of the blade B is fixed to the fixing portion 31 . The fixed frame 310 is swingably connected to the loading platform base 30 by a swing shaft (not shown) arranged at the lower end portion of the fixed frame 310 . The second cylinder 32 swings the fixed portion 31 around its swing axis. Two second cylinders 32 are provided, one on each side in the width direction of the loading platform base 30 . One of the two second cylinders 32 is visible in FIG. These two second cylinders 32 perform the same operation according to the operation of a remote controller (not shown). These second cylinders 32 correspond to an example of a standing mechanism. FIG. 1 shows a state where the second piston rod 321 of the second cylinder 32 is in the most contracted position. In this state, the fixed portion 31 stands vertically and the blade B extends horizontally. A portion of a predetermined length range from one end of the blade B is placed on the carrier base 30 . The second cylinder 32 will be described later.

The turning mechanism 4 is interposed between the loading platform 3 and the vehicle body 2 . By means of this turning mechanism 4, the loading platform 3 is connected to the vehicle body 2 so as to be able to turn horizontally.

2 is an exploded perspective view of the trailer shown in FIG. 1; FIG. A tractor head is also shown in this FIG.

As shown in FIG. 2 , the turning mechanism 4 has a gear fixing plate 40 , a turning gear 41 , a turning base 42 and four turning motors 43 . The gear fixing plate 40 is fixed to the upper surface of the vehicle body 2 with a plurality of bolts. The turning gear 41 is fixed to the gear fixing plate 40 . Therefore, the turning gear 41 is fixed to the vehicle body 2 via the gear fixing plate 40 . The swivel base 42 is rotatably attached to the vehicle body 2 via the gear fixing plate 40 and the swivel gear 41 . The four turning motors 43 are fixed to the turning base 42 respectively. A turning pinion (not shown) is fixed to the output shaft of each turning motor 43 . These slewing pinions mesh with slewing gears 41 . Therefore, by driving the turning motor 43 , the turning base 42 turns horizontally with respect to the vehicle body 2 , the gear fixing plate 40 and the turning gear 41 . The output shafts of these four turning motors 43 rotate in the same direction according to the operation of a remote controller (not shown). The output shaft of the swing motor 43 is rotatable both clockwise and counterclockwise. The loading platform 3 is fixed to a swivel base 42 . Therefore, when the swivel base 42 swivels, the cargo bed 3 swivels horizontally with respect to the vehicle body 2 together with the swivel base 42 . Note that the number of turning motors 43 may be one to three, or may be five or more. When the turning motor 43 continues to be driven, the loading platform 3 continues to turn with respect to the vehicle body 2 and turns 360 degrees or more in the horizontal direction. However, if the loading platform 3 is turned at least 180 degrees or more with respect to the vehicle body 2, the turnable angle may be less than 360 degrees. Note that the trailer 1 shown in FIG. 1 is in a state in which the loading platform 3 is not turning. In this state, one end of the loading platform 3 is arranged on the front side of the vehicle body 2 and extends in the front-rear direction like the vehicle body 2 .

The fixing portion 31 of the loading platform 3 has an annular fixing surface 3114a to which one end surface of the blade B (see FIG. 1) is fixed. This fixed surface 3114a is formed by a rotating disc 3114 (see FIG. 3), which will be described later. One end surface of the blade B is fixed to the fixing surface 3114a, so that the blade B is fixed to the rotating disk 3114 so that the extending direction of the blade B is substantially perpendicular to the surface direction of the fixing surface 3114a. The fixed part 31 has a rotary motor 3111 . Four rotary motors 3111 are attached to the fixed frame 310 so as to surround the fixed surface 3114a. Two of the four rotary motors 3111 are shown in FIG. Note that the number of rotary motors 3111 may be one to three, or may be five or more.

FIG. 3 is a perspective view of the trailer shown in FIG. 1 as seen obliquely from the front and above. A tractor head is also shown in this FIG.

As shown in FIG. 3, the fixed portion 31 has the fixed frame 310 and the rotation mechanism 311 described above. The rotating mechanism 311 has a rotating motor 3111, a rotating gear 3113, a rotating disk 3114, and a rotating pinion 3115 shown in FIG. The rotary gear 3113 has a hollow disk shape. Rotating gear 3113 is attached to fixed frame 310 so as to be rotatable around a center line extending in a direction perpendicular to the upright direction of fixed frame 310 . The rotating disc 3114 is fixed to the rotating gear 3113 . The rotating disk 3114 is composed of annular plates arranged on the front and rear sides of the rotating gear 3113 and a cylindrical body connecting the annular plates inside the hollow portion of the rotating gear 3113 . These annular plates are composed of flat plates having a surface direction perpendicular to the center line of the connected cylinders. Therefore, the fixed surface 3114a (see FIG. 2) is a surface that extends in a direction perpendicular to the center line of the cylindrical body of the rotating disk 3114. As shown in FIG. The centerline of the cylinder coincides with the centerline of the rotating gear 3113, and these centerlines pass through the center of the fixed surface 3114a. A rotary pinion 3115 is fixed to the output shaft of each rotary motor 3111 . These rotating pinions 3115 mesh with rotating gears 3113 . Therefore, by driving the rotary motor 3111, the rotary disk 3114 rotates about the center line of the rotary gear 3113 as the rotation axis. As the rotating disk 3114 rotates, the blade B (see FIG. 1) fixed to the rotating disk 3114 rotates about the axis extending in the extending direction thereof. The output shaft of the rotary motor 3111 is rotatable in both clockwise and counterclockwise directions, and rotates in a specified direction by operating a remote controller (not shown). The rotating disk 3114 can be rotated without limitation of the rotation angle, but it is preferable to be able to rotate at least 180 degrees clockwise and counterclockwise.

FIG. 4 is a top view of the loading platform of the trailer shown in FIG. 1 turning. FIG. 5 is a view of the loading platform of the trailer shown in FIG. 1 turned 90 degrees, viewed from the rear of the trailer. A tractor head 90 is also shown in these FIGS.

As described above, by driving the turning motor 43 , the loading platform 3 turns horizontally with respect to the vehicle body 2 together with the turning base 42 . As shown in FIG. 5 , two auxiliary wheels 34 and an auxiliary wheel drive mechanism 341 are provided at a predetermined portion of the cargo bed 3 . As shown in FIG. 4 , the auxiliary wheels 34 are arranged in a state in which the cargo bed 3 turns with respect to the vehicle body 2 and a predetermined portion of the cargo bed 3 protrudes outward in the width direction of the vehicle body 2 from the vehicle body 2 . 2 advances downward from a predetermined portion stretched outward in the width direction of the vehicle body 2. - 特許庁The auxiliary wheel drive mechanism 341 is for advancing the auxiliary wheels 34 downward, and is provided for each auxiliary wheel 34 . This auxiliary wheel drive mechanism 341 is composed of a cylinder and a link mechanism. The auxiliary wheel drive mechanism 341 operates by operating a remote controller (not shown). The extension operation of the auxiliary wheel drive mechanism 341 causes the auxiliary wheels 34 to extend toward the lower side of the vehicle body 2 . Further, the storage operation of the auxiliary wheel drive mechanism 341 retracts the auxiliary wheels 34 to be stored in the vehicle body 2 . By operating the auxiliary wheel 34 with the auxiliary wheel drive mechanism 341, the auxiliary wheel 34 can advance to a position where it contacts the road surface. When the auxiliary wheels 34 are extended, even if the center of gravity of the blades B (see FIG. 1) is located on the outer side of the vehicle body 2 in the width direction, the auxiliary wheels 34 restrain the trailer 1 from tilting in the width direction. Therefore, it is possible to prevent the blade B from greatly tilting in the width direction of the trailer 1 together with the trailer 1 . As a result, even when the loading platform 3 loaded with the blade B whose center of gravity deviates significantly to the outside of the vehicle body 2 in the width direction due to the turning of the loading platform 3, the loading platform 3 loaded with the blade B can be stably rotated. become. In addition, the angle at which the loading platform 3 loaded with such blades B can be turned is widened. As a result, it is possible to increase the number of situations in which the trailer 1 can be loaded with various objects to be transported, such as the blades B, and the vehicle can travel while the loading platform 3 is largely turned.

FIG. 6 is a perspective view of the loading platform of the trailer shown in FIG. 1 turned 180 degrees and one end side of the loading platform raised, as viewed obliquely from behind the trailer. A tractor head 90 and a blade B are also shown in FIG.

As shown in FIG. 6, even when the loading platform 3 is turned with respect to the vehicle body 2, the first cylinder 5 (see FIG. 7), which will be described later, can be driven. Further, in a state in which the first cylinder 5 is driven to tilt the cargo bed 3 with respect to the vehicle body 2, the turning motor 43 (see FIG. 2) can be driven to turn the cargo bed 3. Similarly, the second cylinder 32 and the rotary motor 3111 (see FIG. 3) can also be driven even when the loading platform 3 is turned with respect to the vehicle body 2 . Further, in a standing state in which the second cylinder 32 is driven to swing the fixing portion 31 and the other end side of the blade B is lifted, the turning motor 43 is driven to turn the loading platform 3 . Further, while the rotating motor 3111 is driven to rotate the rotating disk 3114 and the blades B around the axis extending in the extending direction of the blades B, the turning motor 43 is driven to turn the loading platform 3 .

As shown in FIG. 6, the blade B extends from the loading platform 3 toward the tractor head 90 by rotating the loading platform 3 by 180 degrees with respect to the vehicle body 2 . As a result, the portion of the tractor head 90 and the trailer 1 that overlaps the blade B in the direction of the entire length becomes longer, so the total length including the tractor head 90, the trailer 1 and the blade B can be shortened. By shortening the overall length, the blade B is less likely to come into contact with a building or the like, so the number of curves and intersections that can be turned increases. Therefore, the circumstances in which the trailer 1 loaded with the blades B can travel can be increased.

FIG. 7 is a view from the right side of the trailer showing one end side of the loading platform of the trailer shown in FIG. 1 being raised. FIG. 8 is a view of the trailer shown in FIG. 1 with one end side of the loading platform lowered as viewed from the right side of the trailer.

As shown in FIG. 7, the first cylinder 5 has a first piston rod 51 and a first cylinder tube (not shown) in which a piston for driving the first piston rod 51 is stored. This first cylinder 5 corresponds to an example of a tilt mechanism. The tip of the first piston rod 51 is fixed to the swivel base 42 . A rear end of the cylinder tube is fixed to the loading platform 3 . The first cylinder 5 is a multistage hydraulic cylinder. This first cylinder 5 also operates according to the operation of a remote controller (not shown). The first cylinder 5 extends by protruding the first piston rod 51 from the first cylinder tube, and contracts by retracting the first piston rod 51 into the first cylinder tube. The expansion and contraction of the first cylinder 5 changes the angle of the loading platform 3 with respect to the swivel base 42 . FIG. 7 shows how the loading platform 3 is tilted so that one end side of the loading platform 3 faces upward by extending the first cylinder 5 . That is, by extending the first cylinder 5, the blades B loaded on the loading platform 3 are tilted so that one end side of the blades B fixed to the fixing portion 31 faces upward. 2, the first piston rod 51 normally protrudes from the first cylinder tube by a length that allows the loading platform 3 to extend horizontally like the vehicle body 2. As shown in FIG. The first piston rod 51 can be both extended and retracted from its horizontal state.

FIG. 8 shows a state in which the first cylinder 5 (see FIG. 7) is contracted so that the loading platform 3 is tilted so that one end side of the loading platform 3 faces downward. That is, the first cylinder 5 is contracted by pulling the first piston rod 51 into the first cylinder tube with respect to the horizontal state, and the blade B loaded on the bed 3 is tilted so that one end side faces downward. As shown in FIG. 8, when the first cylinder 5 is contracted, the vehicle body 2 is stretched in the longitudinal direction so that the one end side portion of the loading platform 3 does not come into contact with the front side portion of the vehicle body 2 . The vehicle body 2 has a two-piece structure in which the front part is inserted in the rear part in the longitudinal direction and overlapped, and the front part can be pulled forward from the rear part. By pulling it out, the part located slightly above the other parts is separated from the loading platform 3, so that the one end side part of the loading platform 3 can be positioned downward. After pulling out the front part of the vehicle body 2 from the rear part of the vehicle body 2, it can be fixed at the pulled out position by inserting a pin. After inserting the front part of the vehicle body 2 into the rear part of the vehicle body 2, it can be fixed at the inserted position by similarly inserting the pin. Since one end of the loading platform 3 is separated from the front part of the vehicle body 2 when the loading platform 3 is turning, the one end of the loading platform 3 can be moved without pulling out the front part of the vehicle body 2 from the rear part. can be positioned below.

FIG. 9 is a view of the tilted fixing portion provided on the loading platform of the trailer shown in FIG. 1 as viewed from the upper right side of the trailer.

As described above, by driving the second cylinder 32, the fixed portion 31 swings around the swing axis. As shown in FIG. 9, by protruding the second piston rod 321 and extending the second cylinder 32, the fixed part 31 is tilted so that the other end side of the blade B fixed to the fixed part 31 at one end faces upward. can be made In other words, when the fixed portion 31 is swung, the blade B stands up, and the portion within a predetermined length range from one end of the blade B, which was in contact with the upper surface of the loading platform base 30 before the swing, is lifted. Separated from the loading platform base 30 .

FIG. 10(a) is a top view of the wheels of the trailer shown in FIG. 1 arranged on the inside in the width direction of the vehicle body, and FIG. 10(b) is a view of the trailer shown in FIG. It is the figure which looked at a mode that some wheels were arrange|positioned on the width direction outer side of a vehicle main body from upper direction.

As shown in FIG. 10(a), all the wheel trains normally have the same tread width and are arranged side by side in the front-rear direction. In this arrangement, the outer side surface of the wheel 21 located on the outermost side in the width direction substantially coincides with the side surface of the vehicle body 2 . As shown in FIG. 10(b), some of the wheels 21 can be arranged from the inner side (normal arrangement) in the width direction of the vehicle body 2 shown in FIG. 10(a) to the outer side in the width direction of the vehicle body 2. is. A displaceable wheel 21 is held by a wheel frame 22 . The wheel frame 22 is detachably fixed to other parts of the vehicle body 2 with bolts. By arranging the wheels 21 on the outer side in the width direction of the vehicle body 2, the tread width can be changed to be wider than in the normal arrangement. Specifically, the wheel frame 22 holding the four wheels 21 on the left side of the vehicle body 2 is removed from other parts of the vehicle body 2, moved to the left outside of the vehicle body, and fixed with bolts. Similarly, the wheel frame 22 holding the four wheels 21 on the right side of the vehicle body 2 is removed from other parts of the vehicle body 2, moved to the right outside of the vehicle body, and fixed with bolts. When changing the arrangement of the wheels 21, the change work can be easily carried out by retracting the suspensions of the four wheels 21 held by the wheel frame 22 to separate the wheels 21 from the road surface. When returning the wheels 21 to the position on the inner side in the width direction of the vehicle body 2 shown in FIG. By widening the tread width, even when the center of gravity of the blade B (see FIG. 1) is greatly deviated from the center of the vehicle body in the width direction, the inclination of the trailer 1 in the width direction is suppressed, and the blade B is greatly inclined. This prevents it from being put away. Similarly, by increasing the tread width, even if the center of gravity of the blade B carried by the trailer 1 is located outside the vehicle body 2 in the width direction by turning the loading platform 3, the inclination of the trailer 1 in the width direction is suppressed. , the blade B is prevented from being greatly inclined. When the blade B is light or the center of gravity is not so biased, the maximum width (tread width) of the trailer 1 is widened by locating the wheels 21 on the inner side in the width direction of the vehicle body 2 in a normal arrangement. Since it is possible to prevent it from being put away, it is possible to travel on narrow roads.

According to the trailer 1 of this embodiment, the blade B can be rotated around the axis extending in the extension direction of the blade B by the rotating mechanism 311 . Blade B does not have a simple cylindrical or conical shape, but has an irregular shape such as a flat shape on the other end side (blade tip side) or a dogleg shape that bends in the middle of the extension direction. It often has a radially protruding portion, particularly on the other end side. For example, when passing through a place with limited width and height, such as a tunnel, by rotating the blade B around the axis to change the projecting direction according to the limit, in places with limited width and height. Even if there is, it may be possible to pass through. As a result, the situations in which the trailer 1 can travel can be increased. In addition, by combining the rotation by the rotating mechanism 311 and the inclination of the bed 3 by the first cylinder 5 to adjust both the protruding direction of the blade B and the inclination angle of the bed 3, various shapes of objects to be transported can be handled. can be loaded on the trailer 1 while suppressing the height and width. With this adjustment, the conditions in which the trailer 1 can travel can be increased even in places where the width and height are restricted. In addition, the blade B can be easily rotated around the axis extending in the extending direction by slightly raising the blade B by the second cylinder 32 and separating it from the loading platform 3 . In addition, if the cross section of the portion within the predetermined length range from one end of the blade B, which is the portion placed on the loading platform base 30, is not a perfect circle, the blade B is moved away from the loading platform 3 so that the blade B can be extended. It has the remarkable advantage of being able to rotate about an axis extending in the present direction. Further, by adjusting the angle of the fixing portion 31 by the second cylinder 32 according to the shape of the portion of the blade B to be placed on the carrier base 30 , that portion can be placed on the carrier base 30 .

From the trailer 1 explained above, the following inventive idea can be extracted.

A trailer for transporting a long object,
a vehicle body having wheels;
a carrier arranged on the vehicle body and fixed to one end of the object to be transported;
A trailer comprising a turning mechanism for horizontally turning the cargo bed by at least 180 degrees with respect to the vehicle body.

Further, from the trailer 1 explained above, the following invention idea can also be extracted.

A trailer for transporting a long object,
a vehicle body having wheels;
a carrier arranged on the vehicle body and fixed to one end of the object to be transported;
The loading platform is connected to the vehicle body so as to be able to rotate in a horizontal direction with respect to the vehicle body, and the loading platform rotates relative to the vehicle body so that a predetermined portion of the loading platform is wider than the vehicle body. A trailer having auxiliary wheels projecting downward from the predetermined portion in a state of projecting outward in the width direction of the vehicle body.

In addition, the following inventive idea can be extracted from the trailer 1 explained above.

A trailer for transporting a long object,
a vehicle body having wheels;
a carrier arranged on the vehicle body and fixed to one end of the object to be transported;
A trailer comprising a tilting mechanism for tilting the loading platform so that the one end side of the transported object fixed to the loading platform faces downward.

Furthermore, the following inventive concept can be extracted from the trailer 1 described above.

A trailer for transporting a long object,
a vehicle body having wheels;
a carrier arranged on the vehicle body and fixed to one end of the object to be transported;
The trailer, wherein the vehicle body is capable of changing the arrangement of the wheels to the outside in the width direction of the vehicle body and to the inside in the width direction of the vehicle body.

The present invention is not limited to the above-described embodiments, and can be modified in various ways within the scope of the claims. For example, in this embodiment, the trailer 1 carries the blade B, but the trailer 1 can also be used to carry objects other than the blade B. Further, although the first cylinder 5, the second cylinder 32, the turning motor 43 and the rotation motor 3111 are operated by the remote control, they may be operated by operating means other than the remote control. Furthermore, the first cylinder 5, the second cylinder 32, the turning motor 43 and the rotating motor 3111 may be operable from a plurality of operating means.

In addition, even if the constituent elements are included only in the description of each of the embodiments and modifications described above, the constituent elements may be applied to other embodiments and other modifications.

REFERENCE SIGNS LIST 1 trailer 2 vehicle body 3 loading platform 4 turning mechanism 5 first cylinder (tilting mechanism)
21 wheel 31 fixed part 32 second cylinder (standing mechanism)
34 training wheel 311 rotation mechanism B blade (object to be transported)

Claims (4)

A trailer for transporting a long object,
a vehicle body having wheels;
A rotating mechanism arranged on the vehicle body for rotating the object to be transported about an axis extending in an extending direction of the object to be transported , a loading platform base on which the loading object is placed, and the loading platform. a loading platform having a fixed portion that is swingable with respect to a base and to which one end side of the object to be transported is fixed;
an erecting mechanism for erecting the transported object by swinging the fixed portion with respect to the carrier base;
and a tilting mechanism for tilting the loading platform so that the one end side of the transported object fixed to the loading platform faces upward. 2. A trailer according to claim 1, further comprising a turning mechanism for horizontally turning said cargo bed at least 180 degrees with respect to said vehicle body. The loading platform is connected to the vehicle body so as to be able to rotate in a horizontal direction with respect to the vehicle body, and the loading platform rotates relative to the vehicle body so that a predetermined portion of the loading platform is wider than the vehicle body. 2. The trailer according to claim 1, further comprising auxiliary wheels projecting downward from said predetermined portion in a state of projecting outward in the width direction of said vehicle body. 4. The trailer according to any one of claims 1 to 3, wherein the vehicle body is capable of changing the arrangement of the wheels to the outside in the width direction of the vehicle body.

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