JPH07471Y2 - Horizontal bending type lifting crane - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a horizontal bending type lifting crane for lifting work of interior materials, equipment and the like at a construction site.

[Conventional technology]

When these building materials are unloaded on the middle floor for the construction of the building structure and for the installation and interior work, the cranes conventionally installed at the top of the building are used for unloading work.

[Problems to be solved by the invention]

However, according to the above-mentioned conventional method, the suspended load cannot be taken into the inside of the building. Therefore, the suspended load is temporarily lifted to a load receiving stage temporarily provided on the outside of each floor of the building and then taken into the inside of the building.

Therefore, it is considered to raise the crane body to the middle floor for unloading and lift up and take in the material, but it is a big problem to lift the heavy crane body to the middle floor, and also the mast for lifting the crane body. The wall tie that supports the building interferes with the lifting and lowering of the crane, and the lifting height of the crane is limited to within the self-standing height of the mast, so it cannot be used for high-rise buildings.

In addition, since there are obstacles such as pillars inside the building, it is restricted by the crane's establishment position and the length of the boom, and it is not useful for loading suspended loads into the building, and in the end it can only perform a lifting function. , Or the structure of the crane has become complicated and has not yet been put to practical use.

Therefore, the present invention has been made in order to solve the problems of the conventional hoisting crane described above, and it is made possible to simplify the lifting and lowering of the crane by simplifying the weight of the mast and the hoisting portion and bending the boom in multiple stages. In this way, it is possible to take in suspended materials inside the building while avoiding obstacles such as pillars inside the building and expand the work range.In addition, the lifting and lowering of the elevating part is not obstructed by the wall connection, and the mast is added. The purpose of the present invention is to provide a horizontal bending type lifting crane that can be used for skyscraper construction.

[Means for solving problems]

In order to achieve the above-mentioned object, a horizontal bending type lifting crane according to the present invention is supported by a wall erection on one side to stand upright on a building and has a mast that can be extended by extending the length of the mast. An elevating part that is vertically driven along the mast and can be fixed at an arbitrary height position of the mast, and a base end part is attached to the elevating part, and the booms of each stage are independently connected so as to be horizontally pivotable. In a horizontal bending type crane comprising a multi-stage boom, a hoisting winch installed on the base of the lower part of the mast, and a hoisting wire driven and operated by the hoisting winch, the hoisting wire includes a hoisting winch and a mast. Both ends are connected to the top part, respectively, and an intermediate part thereof is extended along the multi-stage boom and hangs down from the tip of the multi-stage boom, and a reversing part by sheave. Hook is characterized in that it is Tsu支.

[Action]

Since the winding winch is installed on the lower base of the mast, and the tail of the winding wire is connected to the top of the mast,
The tension of the hoisting wire when hoisting the winch is not applied to the lifting part, and the lifting part is used by being fixed with a pin to the mast during lifting work where the load of the suspended load is applied. Power is also small enough to raise and lower its own weight when there is no load.

Also, since the elevating part moves up and down in contact with the three side faces of the mast, it is possible to attach a wall joint to the other side face of the mast, and the elevating part can elevate and lower over the entire length of the mast without being obstructed by the wall joint. It becomes possible to make the intervals of the connection tight.

In addition, since the boom is a multi-stage bending type, the work range of the boom is expanded, and after lifting the suspended load to a predetermined floor, the boom is bent appropriately to avoid obstacles such as columns inside the building and enter the inside of the building. Therefore, it is possible to suspend the materials and take them into the building all at once.

〔Example〕

 The present invention will be described below with reference to an embodiment shown in the drawings.

FIG. 1 is an overall side view showing a horizontal bending type lifting crane according to the present invention in an embodiment of a two-stage bending type boom, and FIG. 2 is a plan view thereof.

The structure will be described with reference to the illustrated two-stage bending type crane of the present invention. The mast 1 has a prismatic shape and is provided with a base 2 at the bottom.
The base 2 is installed on the ground, and is erected with a wall joint 4 between the back surface 1a of the mast 1 and the outer wall of the building 3.

An elevating part 5 having a U-shaped cross section is attached to the mast 1 so as to come in contact with three side surfaces except the back surface and elevate by itself. That is, the lifting unit 5 is a pair of left and right upper and lower shafts that are axially attached to the inner surfaces of the left and right sides.
A pair of upper and lower guide rollers 6 are fitted to guide rails 1b formed on the left and right side surfaces of the mast 1, and are paired on the left and right, which are pivotally mounted on the frame 26 of the lifting motor 7 mounted on the lower portion. A pair of guide rollers 8 are fitted to the guide rails 1b of the mast 1, and a pinion gear 27 driven by a lifting motor 7 meshes with a rack gear 9 on the front surface of the guide rails 1b to lift and lower the lifting unit 5. At the stop position, two pairs of upper and lower fixing pins 10 forming a pair on the left and right can be inserted from both sides of the elevating part 5 into the pin holes 1c on both sides of the mast 1 to fix the elevating part 5 at an arbitrary height position. .

A first-stage boom 12 that is horizontally swivel-driven by a swivel cylinder 11 is pivotally attached to the front surface of the elevating part 5 at the base end, and a second-stage boom that is similarly swivel-horizontally driven by the swivel cylinder 13 at the tip end thereof. 14 is pivotally attached at the base end.

On the other hand, a hoisting winch 15 is installed on the base 2 below the mast 1, and the hoisting wire 16 having the proximal end coupled to the hoisting winch 15 has an intermediate portion through the guide sheaves 17, 18, and 19 at the first stage, A hook 21 is suspended from a sheave 20 at an inversion end that extends along the two-stage booms 12 and 14 and hangs from the tip of the second-stage boom 14, and after inversion, the guide sheaves 19 ′, 18 ′, 17 ′ are provided.
Returning to the mast 1 side via the, the tail is connected to the upper frame 22 attached to the top of the mast 1 via the load limiter 23. Reference numeral 24 in the figure denotes a stopper for the upper limit of winding of the winding wire 16.

The above-described crane of the present invention is used when working, and the rear surface 1a of the mast 1
The mast 1 is added up to the required height by arranging the wall connection 4 between the outer wall of the building 3 and the outer wall of the building 3 to stand upright. Then, the elevator motor 7 is driven in an empty state to raise the elevator 5 to the floor height for unloading, and the fixing pin 10 is inserted there to fix the elevator 5 to the mast 1. In this state, ground material is hooked on the hook 21, and the hoisting winch 15 is operated to hang it from the tip of the second stage boom 14 The hoisting wire 16
The hoisting wire 16 is hoisted until it abuts on the stopper 24 at the tip of the step boom 14.

To take in the material, operate the swivel cylinders 11 and 13 so that the suspended load and boom do not come into contact with obstacles such as columns, and bend the first and second stage booms 12 and 14 as appropriate to enter the building. To do. The operation of the crane is performed by operating the buttons on the remote control panel while directly monitoring the operation of the crane on the material loading floor.

FIG. 3 shows the working range of the crane of the present invention.
If the swing angle of the multi-tiered boom 12 is 180 degrees and the swing angle of the second-tiered boom 14 is 270 °, the range indicated by the diagonal lines in the figure is the working range, and the mast that cannot be covered by conventional cranes of this type. The work range is expanded to the back side and the first
By appropriately bending the stepped booms and the second stepped booms 12 and 14, the booms 12 and 14 can enter the inside of the building 3 while avoiding obstacles such as the pillar 25.

To extend the mast 1 with the completion of the upper floors in the skyscraper construction, connect the wall to the top of the mast 1, connect the mast to the top of the mast 1, reassemble the upper frame 22, and connect the tail of the winding wire 16 to this. Change.

Note that the boom can be made into a multi-stage bending type by successively adding booms that are horizontally driven independently of each other similarly to the tip of the second-stage boom. The range can be expanded, and it becomes possible to take in materials by following a complicated route inside the building.

[Effect of device]

INDUSTRIAL APPLICABILITY As described above, the present invention is a mast that is erected by being supported on a building by a wall tie provided on one side, and that can be extended by extending the length of the mast, and is driven up and down along the three sides of the mast. Of the mast, which is fixed to an arbitrary height position of the mast, a multi-stage boom in which a base end portion is attached to the elevating part, and the booms of the respective stages are independently connected so as to be horizontally rotatable. In a horizontal bending type hoisting crane comprising a hoisting winch installed on a lower base and a hoisting wire driven and operated by the hoisting winch, the hoisting wire is connected to the hoisting winch and the top of the mast at both ends. The multi-stage boom has an intermediate portion extending along the multi-stage boom, is hung from the tip of the multi-stage boom, and has a hook hung from the reversing portion by the sheave. From those that achieve the such effects below.

In other words, the tension of the hoisting wire at the time of hoisting the winch is not applied to the elevating part, and the elevating part is fixed to the mast during lifting work and does not lift the suspended load, so a simple and lightweight structure can be adopted for the elevating part. As a result, a small amount of lifting power is required.

Further, since the elevating part can move up and down over the entire length of the mast without being obstructed by the wall connection, the space between the wall connections can be made close, and therefore the rigidity of the mast is low and the weight can be reduced.

The crane of the present invention can be applied to the construction of a skyscraper by reducing the weight of the elevating unit, reducing the weight of the mast, and enabling continuous elevation over the entire length of the mast.

In addition, since the boom is of a bendable type, the mast is supported by wall ties, but the work dead angle left on the support structure side is small, and the boom working range is the same as that of a swing type boom. Not only is it expanded to almost the entire circle area, but there is no restriction on the establishment position of the mast required for turning, and it is possible to lift suspended loads and take in suspended loads into the building all at once. It becomes possible and the work efficiency is improved.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is an overall side view of a two-stage bending type boom of a horizontal bending type lifting crane according to the present invention, FIG. 2 is its plan view, and FIG. It is a top view showing the working range of the present invention crane. 1 ... Mast, 2 ... Base, 4 ... Wall connection, 5 ...
Lifting part, 7 ... Lifting motor, 10 ... Fixing pin, 11, 13
...... Swivel cylinder, 12 …… First stage boom, 14 …… Second
Step boom, 15 …… Winding winch, 16 …… Winding wire, 21 …… Hook

Claims (1)

[Scope of utility model registration request] 1. A mast which is erected to be supported by a building by a wall tie provided on one side thereof and which can be extended by extending its length,
An elevating part that is vertically driven along the three side faces of the mast and can be fixed at an arbitrary height position of the mast, and a base end part is attached to the elevating part, and the booms of each stage are independently moved horizontally. In a horizontal bending type hoisting crane comprising a multistage boom pivotably connected, a hoisting winch installed on the base of the lower part of the mast, and a hoisting wire driven and operated by the hoisting winch, the hoisting wire comprises: , The winding winch and the top of the mast are connected to each other at their both ends, the intermediate portion of which extends along the multi-stage boom and hangs from the tip of the multi-stage boom,
A horizontal bending type lifting crane characterized in that a hook is suspended from the reversing part of the sheave.