JPH041186Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a crane used at construction and civil engineering work sites.

[Background Art] Various types of cranes are used at construction and civil engineering work sites to transport and move building materials, equipment, and the like.

A typical example of this type of crane is a bridge-type crane that has a pair of rails laid at a construction site and is run on these rails.

[Problems to be solved by the invention] However, the above-mentioned conventional bridge crane had the following problems.

(1) A pair of rails must be laid at the construction site, which takes time and preparation work before the crane can be used.

(2) When moving a crane from one location to another within the same site, the rails themselves must be moved, which makes the movement work large-scale.

(3) If the ground at the construction site has many ups and downs, it may not be possible to lay the rails themselves.

(4) Conventional bridge-type cranes have a pair of column bases and a main girder, and since they are made of one long piece, there is no need to stop the traffic of people and vehicles to proceed with the work. In some cases, there were problems such as the work on site was difficult and dangerous.

The present invention has been made in view of the above problems, and its purpose is to provide a folding crane that is easy to handle and has excellent practicality.

[Means for Solving the Problems] In order to achieve the above object, the folding crane according to the present invention has the saddle member halves 3 and 4 attached to which the saddle car 13, which travels in direct contact with the ground, is attached to the center of the folding crane. A pair of left and right saddle members disposed at the front and rear of the saddle member half body 2, and each of the saddle member halves 3 and 4 is foldably connected to the central saddle member half body 2 inwardly in the same direction. 1a, 1b, and a plurality of legs 16, 1 in the vertical direction.
7, 18, and 19, and each of the divided parts is connected by a hinge 7 so as to be foldable in a staggered manner, and the leg 1 on the lower end side
A pair of left and right column legs 15a, 15b which are foldably attached to the center saddle member half body 2 via a hinge 7; 19 and a main girder 27 attached to span the pair of column bases 15a, 15b, and a traveling hoist 28 having a hoist is arranged on the main girder 27. be.

[Function] According to this configuration, the column bases 15a, 15b are divided into a plurality of legs 15, 16, 17, 18, 19, and each of the divided portions can be sequentially folded in a staggered manner. Furthermore, from this state, between the lower end side leg 16 and the central saddle member half 2, the entire column leg can be folded into a state where it lies on the pair of left and right saddle members 1a and 1b. In addition, in the pair of saddle members 1a and 1b, the saddle member halves 3 and 4 disposed before and after the central saddle member half 2 can be folded in the same direction with respect to the central saddle member half 2, respectively. Therefore, the overall height and width can be reduced as required and the crane can be stored in a very compact state when not in use.

Therefore, the storage space when not in use can be reduced, and even when the crane is loaded on a car and transported to another construction site, a small car can be used.

In addition, it can be simply folded and transported in a compact state without having to be separated into each part, so assembly at the construction site can be done in a short time.
And it can be done with a small number of people.

Furthermore, since the saddle car 13, which runs directly in contact with the ground, is attached to the saddle member half and runs, the saddle car 13 is easily adapted to the undulating ground and the like when running.

In addition, when the saddle members 1a and 1b are assembled, the column bases 15a and 15b can be folded down to lower the overall center of gravity. It is also possible to easily move it around the construction site, making it possible to move around the construction site smoothly.

[Example] Hereinafter, an example of the present invention will be described in detail using the drawings.

Figures 1 to 6 show an embodiment of the folding crane according to the present invention. Figure 1 is a side view showing the column base and saddle member folded to make it compact, and Figure 2 is a side view showing the folding crane according to the present invention. FIG. 1 is a top view of the same state shown in the above, FIG. 3 is a side view of the folding crane according to the present invention shown in use, FIG. 4 is a sectional view taken along the line 5 is a top view of the same state shown in FIG. 2, and FIG. 6 is a front view of the same state shown in FIG. 2.

In FIGS. 1 to 6, the saddle wheel support 1
The main girder 27 is made of I-type steel and has a length of about 3 to 5 meters, and column legs 15a, 15b and saddle members 1a, 1b are respectively disposed on the left and right sides of the main girder 27. Further, the left and right column legs 15a, 15b and the left and right saddle members 1a, 1b are formed substantially symmetrically.

Therefore, in the detailed configuration of the column bases 15a, 15b and the saddle members 1a, 1b, corresponding members on the left and right sides are given the same reference numerals, and the configuration of only one side will be explained.

First, the column legs 15a, 15b are composed of four legs 16,
Divided into 17, 18, 19, each leg 16,
Terminal parts 2 adjacent to each other 17, 18, 19
A flange portion 26 is fixedly attached to the 5, and each flange portion 26 is connected by a hinge 7 (see Fig. 1), and the hinge 7 connects each leg 16, 17, 18, 19. are ready to be folded sequentially. Although not shown, one end of the main girder 27 is rotatably attached to the upper end flange portion 26 of the leg 19 disposed at the top via a hinge 7, and the leg 19 disposed at the bottom Saddle members 1a and 1b are rotatably attached to the lower end flange portion 23 via a hinge 7. Further, an insertion portion 24 is provided on the lower end side of the leg 16 in a state protruding from the lower surface, and a hole for passing the pin 20 through the insertion portion 24 is formed to pass through from side to side. (See Figure 4).

On the other hand, the saddle members 1a and 1b include a central saddle member half 2 and a central saddle member half 2.
Saddle member halves 3 and 4 provided at the front and rear of the
It is divided into. Further, the central saddle member half body 2 and each saddle member half body 3, 4 are connected via a hinge 7, and the connection by the hinge 7 connects each saddle member half body 3, 4 to the central saddle member half body 3, 4. Inside each other with respect to half body 2 (surfaces 6a, 6b
It can be folded by rotating it approximately 90 degrees to the side. In addition, a flange portion 12 is provided on the opposing end surfaces of the central saddle member half 2 and each of the saddle halves 3 and 4 on a surface 6' side opposite to the surface 6 on which the hinge 7 is provided. At the same time, a locking means 9 is provided between each flange portion 12. This locking means 9 has each of the saddle halves 3 and 4 aligned in a straight line with respect to the central saddle member half 2;
Each flange portion 12 has a corresponding hole into which a bolt 10 can be commonly inserted when the flange portions 12 come into contact with each other. Also, this bolt 10
After the bolt 10 is inserted, a pin 11 (see FIG. 4) is fitted to the protruding end of the bolt 10, so that the bolt 10 can be prevented from slipping out of the hole.

Furthermore, the lower ends of the legs 16 of the column bases 15a, 15b are foldably connected to the upper surface 21 of the central saddle member half 2 via hinges 7. Further, on this upper surface 21, an insertion portion 2 for the leg 16 is provided.
An insertion groove 22 is provided at a position corresponding to 4, and an insertion portion 24 is inserted into this insertion groove 22 when the leg 16 is erected with respect to the central saddle member half 2. It's becoming like that. In addition, the insertion groove 22 has a hole corresponding to the hole on the insertion part 24 side, and when the pin 20 is inserted into both holes, the central saddle member half 2 and the legs are inserted. 16 is rotatably locked (see FIG. 4).

On the other hand, a saddle wheel 13 is attached to each of the saddle member halves 3 and 4. This saddle car 13
is designed to be able to directly touch the uneven ground of a construction site, and although rubber tires are used in this embodiment, endless tracks or the like may also be used. In addition, the saddle member half body 3,
One of the saddle wheels 13 (on the side of the saddle member half body 3 in this embodiment) of the saddle wheels 13 disposed in the saddle wheel 4 is configured to be driven by a motor 14 .

Next, an example of use of the folding crane in this embodiment will be described.

First, this folding crane is handled in a folded state while being transported to a construction site or when being stored (see Figures 1 and 2). That is, in this state, the legs 19, 18, 17, 16 are sequentially bent in a staggered manner at the hinge 7, and the central saddle member half 2
It is folded up. In addition, the main girder 27 is the leg 1
It is folded together with the legs 9 and laid down in front of the legs 19. In addition, the saddle member halves 3 and 4 are each folded inward at approximately 90 degrees at the hinge 7 and are compactly assembled. This reduces the overall height of the crane and lowers the center of gravity, providing stability during transportation and storage. Moreover, the width dimension in the front and back direction is also reduced, the storage space can be reduced, and it is also easier to move to another location.

Next, when using this crane on site,
First, the main girder 27 is lifted to the required height using another crane. In this case, the main girder 27, legs 19,1
8, 17, 16, and the central saddle member half 2 are connected via the hinge 7, so as the main girder 27 is lifted, the legs 19, which had been folded until then, 18, 17, and 16 are triggered and expanded in sequence. And leg 1
When the legs 9, 18, 17, and 16 are in a straight upright position, the insertion portions 24 of the legs 16 are placed in the insertion grooves 22. Next, the bolt 10 is inserted into the holes of the insertion portion 24 and the insertion groove 22 to be rotatably locked, and the pin 11 is inserted into the hole on the tip side of the bolt 10 to prevent it from coming off (Fig. 4). reference). Further, with the main girder 27 lifted up, the main girder 27 and the legs 19, 18, 17, and 16 are fixed with bolts and pins (not shown). Then, the column legs 15a, 15b stand straight up with respect to the central saddle member half 2, and the main girder 27 is disposed astride between both column legs 15a, 15b. A hoist 28 is movably disposed on the main girder 27, and in this embodiment, hoists 28 for a rated load of 2.8 tons, 4.8 tons, and 10 tons can be used. These are selected depending on the application. Further, after the column bases 15a, 15b and the main girder 27 are set, the saddle member halves 3, 4 are rotated outward at the hinge 7, and are arranged in front and behind the central saddle member half 2, respectively. . Next, a bolt 10 is inserted into the locking means 9 and fixed, completing the assembly and making it ready for use. Figures 3, 5 and 6
The figure shows this situation.

The folding crane assembled in this way can move forward and backward when the saddle car 13 is rotated by the motor 14, and when traveling, the saddle car 13 can be moved on undulating or uneven ground. Since it is a rubber car or tracked car that adapts to the terrain, it is easier to drive on uneven ground at construction sites. Furthermore, when the entire crane is tilted due to uneven ground, the left bottom leg of the bottom legs 16 of the left and right column legs 15a, 15b is rotatably fixed by the pin 20. Therefore, even if the saddle car support 1 is tilted, the entire left and right column legs 15a, 15b, that is, the main girder 27, can be held in a relatively nearly horizontal state. As a result, the left and right column legs 15a, 15
Even if one of the columns 15b, that is, the right column pedestal 15b, becomes oblique in response to the inclination of the saddle member 1b, the other column pedestal 15a, that is, the left column pedestal 15a, becomes relatively vertical due to the rotation of the pin shaft 20. Therefore, the main girder 27 as a whole can be kept close to horizontal.

On the other hand, if you want to fold it again, you can do it by performing the opposite operation to the above.
When moving the site further, saddle member 1
a, 1b remain as they are, and the column bases 15a, 1
5b and the main girder 27, the overall height of the crane is low, and the center of gravity can be lowered to allow stable movement.

Although the above-mentioned embodiment discloses a structure in which the column bases 15a and 15b are each divided into four legs 16, 17, 18, and 19, this number can be arbitrarily selected depending on the purpose. In addition, the left and right column bases 1
There is no problem even if one or more pairs of 5a and 15b are provided. Further, the means for locking each folding portion in the extended state may also be of a structure other than a bolt and pin structure.

[Effects of the invention] As explained above, according to the foldable crane according to the invention, the overall height and width can be reduced as needed and stored in a very compact state, so when not in use. It is possible to reduce the storage space in the
Even when the crane is loaded onto a car and transported to another construction site, a small car can be used.

In addition, it can be simply folded and transported in a compact state without having to be separated into each part, so assembly at the construction site can be done in a short time.
Moreover, it can be performed by a small number of people and is extremely easy to handle.

Further, since the saddle car 13, which runs directly in contact with the ground, is attached to the saddle member half and runs, it is easy to adapt to the undulating ground and the like when running.

In addition, when the saddle members 1a and 1b are assembled, the column bases 15a and 15b can be folded down to lower the overall center of gravity. It is also possible to easily move it around the construction site, allowing for smooth movement within the construction site and improving work efficiency.

[Brief explanation of the drawing]

Figures 1 to 6 show an embodiment of the folding crane according to the present invention. Figure 1 is a side view showing the column base and saddle member folded to make it compact, and Figure 2 is a side view showing the folding crane according to the present invention. FIG. 1 is a top view of the same state shown in the above, FIG. 3 is a side view of the folding crane according to the present invention shown in use, FIG. 4 is a sectional view taken along the line 5 is a top view of the same state shown in FIG. 3 as seen from the direction of arrow P in FIG. 3, and FIG. 6 is a front view of the same state shown in FIG. 2. 1... Saddle car support body, 1a... Saddle member,
1b...Saddle member, 2...Central saddle member half, 3...Saddle member half, 4...Saddle member half, 7...Hinge, 13...Saddle wheel, 15a...
... Column base, 15b... Column base, 16-19... Divided legs, 27... Main girder, 28... Hoist.

Claims (1)

[Scope of claim for utility model registration] Saddle vehicle 1 for running while directly touching the ground
The saddle member halves 3 and 4 to which the saddle members 3 are attached are disposed at the front and rear of the central saddle member half body 2, respectively, and the saddle member halves 3 and 4 are respectively disposed on the same inner side with respect to the central saddle member half body 2. A pair of left and right saddle members 1a and 1b connected so as to be foldable in the direction
It is divided into a plurality of legs 16, 17, 18, and 19 in the vertical direction, and each of the divided parts is connected by a hinge 7 so as to be foldable in a staggered manner, and the leg 16 on the lower end side is connected by a hinge 7. A pair of left and right column legs 15a, 15 are foldably attached to the central saddle member half 2 via a hinge 7.
b, and the column bases 15a, each having one end corresponding to the column base 15a.
The main girder 27 is connected to the leg 19 on the upper end side of the pillar 15b and is attached across the pair of pillar legs 15a, 15b, and the main girder 27 has a hoisting machine.
A folding crane characterized by the number 8.