JPH085995Y2 - Simple mobile crane - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a simple mobile crane in which a mobile carriage and a crane boom are combined.

[Prior Art] There is known a crane in which a crane boom is provided on a trolley, and support legs are attached to the pedestal to support the trolley by grounding the support leg during crane work, and in this state, the crane boom is raised and lowered to lift and lower cargo. There is.

[Problems to be solved by the device]

In such a crane, even a simple crane with a rated lifting weight of about 250 kg has a heavy weight exceeding 200 kg and cannot be used by human power, so it cannot be used except where there are lifting equipment such as a transportation crane and elevator.
It is difficult to move between sites.

It is troublesome to extend the support legs during crane work, and to fold the support legs with hydraulic pressure or human power during movement.

Then, this invention aims at providing the simple mobile crane which was able to solve the above-mentioned subject.

[Means and Actions for Solving the Problems] The present invention provides a machine base A in which a plurality of supporting legs are provided on a substrate 1,
A trolley body 31 provided with wheels 30 and a lift table 32 provided on the trolley body 31 so as to be able to move up and down. A clay boom B is provided, which is attached so that it can swing up and down, a wheel 22 is attached to the lower part of the column 10, and a handle 23 is attached to the upper part of the column 10. It is a simple mobile crane that is detachably connected to.

As a result, the lift table 32 of the carriage C is lowered to separate it from the board 1 of the machine base A, and the carriage C is pulled out from the machine base A to divide the carriage C and the machine base A, and the support column 10 of the crane boom B is separated from the machine base A. Crane boom B and machine stand A by removing from board 1 of
By dividing the machine base A, crane boom B and carriage C
Can be divided into three.

Further, the telescopic boom 12 of the crane boom B is contracted and swung downward, and in that state, the handle 23 is brought into contact with the wheels 22 on the ground and the crane boom B can be transported.

Further, if the dolly C is inserted under the substrate 1 of the machine base A and the lift table 32 of the dolly C is raised, the machine base A is pushed up and the supporting legs can be moved away from the ground.
If you lower, the support leg will come into contact with the ground.

〔Example〕

The machine base A, the crane boom B, and the carriage C constitute a simple mobile crane, and the machine base A includes a board 1, and a pair of one side support legs 2, 2 and a pair of the other side are provided at the lower four corners of the board 1. The support legs 3, 3 are provided, and the one-side support leg 2 is provided with a leg 6 at the end of a movable rod 5 which is slidable along a guide tube 4, and has a support position protruding outside the substrate 1. And the other side supporting leg 3 is provided with a leg 8 at an end of a movable rod 7 which is horizontally swingable, and the other side supporting leg 3 is provided at four corners of the substrate 1. A handle 9 is provided so as to protrude outward so that a person can carry the handle 9 and carry it.

The crane boom B is provided with a support column 10, a telescoping boom 12 is supported by a bracket 11 provided on the support column 10 so as to be rotatable, and the first and second pin holes 13 ₁ , 13 ₂ are supported.
The telescopic boom 12 can be adjusted to different angles by replacing the pin 14 with the telescopic boom 12, and the telescopic boom 12 can freely extend and retract the first movable boom 16 to the fixed boom 15 and the second movable boom 17 to the first movable boom 16. It is adapted to be expanded and contracted manually by a human being and can be fixed by a lock pin (not shown), and a winch 18 provided on the fixed boom 15 winds a rope 19 and feeds it out. The mounting plate 20 provided on the
Wheel 22 is provided at the bottom of 10 and handle 23 is provided at the top.
It is designed to be grounded and to be carried by the handle 23.

The dolly C is formed by connecting a dolly body 31 having wheels 30 and a lift table 32 by an X-shaped link mechanism 33, and a cylinder 34 for extending and contracting the link mechanism 33, and pressure oil to the cylinder 34. Pump 35 that supplies and extends, and its pump
A foot-operated lever 36 for activating 35, a dial 37 for reducing the cylinder 34, and a pulling handle 38 are provided.
32 is placed on the bracket 39 of the machine base A and locked by the lock mechanism 40.

The lock mechanism 40 is one in which a lock pin 42 is inserted into a cylindrical body 41 provided on the board 1 of the machine base A.
Is engaged with the first cutout groove 45 of the tubular body 41, the lock pin 42 is housed in the tubular body 41 and separated from the lift table 32, and when engaged with the second cutout groove 46, the lock pin 42 is released from the tubular body 41. The lift table 32 is arranged so as not to slip out, facing the end surface of the slip-out lift table 32.

Then, when the foot-operated lever 36 is moved up and down to supply pressure oil from the pump 35 to the cylinder 34, the link mechanism 33 extends, the lift table 32 rises and is pressed against the lower surface of the substrate 1, and the machine base A At the same time, the crane boom B is pushed up and the legs of each support leg are separated from the ground, so that the platform C can be moved by the carriage C.

When the dial 37 is operated to reduce the size of the cylinder 34, the link mechanism 33 is reduced and the legs of the supporting legs come into contact with the ground to support the machine base A.

[Effect of device]

The lift table 32 of the trolley C is lowered and the board 1 of the machine base A is lowered.
The carriage C can be pulled out from the machine base A to separate the carriage C and the machine base A, and the crane boom B and the machine base A can be divided by removing the support column 10 of the crane boom B from the board 1 of the machine base A. .

Therefore, the simple mobile crane can be carried by dividing the machine base A, the crane boom B, and the carriage C into three parts, and can be easily carried by human power, and can be loaded in a luggage compartment of a general van or wagon, When loading the machine base A and the crane boom B, the lift table 32 of the dolly C can be used for easy loading.

Moreover, since the telescopic boom 12 of the crane boom B is contracted and swung downward, and in that state, the wheel 23 can be brought into contact with the wheel 22 by the handle 23 to carry the crane boom B, the crane boom B can be easily carried. Becomes

Further, if the dolly C is inserted under the substrate 1 of the machine base A and the lift table 32 of the dolly C is raised, the machine base A can be pushed up and the supporting legs can be moved away from the ground.
If 32 is lowered, the supporting legs come into contact with the ground, so it is not necessary to pull in the supporting legs each time the movement is made.

[Brief description of drawings]

FIG. 1 is a front view, FIG. 2 is a plan view, FIG. 3 is a side view, and FIG. 4 is a perspective view of a lock mechanism. A is a machine stand, B is a crane boom, C is a dolly, and 32 is a lift table.

Claims (1)

[Scope of utility model registration request] 1. A machine base A having a plurality of support legs provided on a substrate 1, a carriage body 31 having wheels 30, and a lift table 32 provided on the carriage body 31 so as to be vertically movable. A trolley C that can run on the lower part of the base plate 1 of the above, and a telescopic boom 12 is mounted on the upper part of the column 10 so that it can swing vertically.
A simple mobile crane in which wheels 22 are attached to the lower part of the column 10 and a clay boom B having a handle 23 is attached to the upper part of the column 10 and the column 10 of the clay boom B is detachably connected to the board 1 of the machine base A. .