JPH0427909Y2 - - Google Patents

Description

[Detailed Description of the Invention] <<Industrial Application Field>> This invention relates to a sling removal device used when assembling steel frames, etc. at a construction site, and particularly relates to a sling removal device that can be attached and detached by remote control.

《Prior art and its problems》 Conventionally, for example, in steel frame construction work for building construction, a crane is used to hoist a steel column suspended on the ground, transport it to a predetermined installation location, fix the base with bolts, etc., and then begin work. A person had climbed to the top of the steel column and removed the hanging bracket.

This type of work is dangerous work at heights, and if special work scaffolding is temporarily erected for safety, dismantling it later will be troublesome, causing a significant delay in the construction period, and slinging work. The number of workers required is also limited, as it requires qualified personnel who specialize in working at heights. As described above, in this type of lifting work, the work itself of removing the lifting equipment is a major factor in reducing work safety and efficiency.

Therefore, there has been proposed an automatic loading/unloading device for removing a shaft pin by remote control, as disclosed in, for example, Japanese Patent Application Laid-Open No. 59-57886.

However, this device also had the following problems.

That is, the automatic attachment/detachment device disclosed in the above-mentioned publication includes a pair of motors disposed at both ends of the shuttle body, and a pair of motors that mesh with a pinion mounted on the drive shaft of the motor and move forward and backward in a direction perpendicular to the shaft body. A rack, a yoke that spans the rack, and a shaft pin that is connected to the yoke and moves to follow the forward and backward movement of both racks and is fitted into and removed from a hole in the shaft body.

Therefore, when attaching the suspension piece to a hanging piece that protrudes from a steel frame material, for example, the motors installed at both ends of the shell body and the yoke spanned between the racks get in the way, and the hanging piece is attached from below the shell body. This can be troublesome depending on the mounting position of the hanging piece.

In addition, the shaft pin, which is inserted into and removed from the hole in the shaft body, is moved forward and backward by a pair of motors and a pinion and rack mounted on the rotating shaft of each motor. Unless they are synchronized, the shaft pin cannot move smoothly forward and backward.

Therefore, the adjustment of the pinion and rack and the motors is troublesome and complicated.

《Purpose of the invention》 This invention was made in view of the above-mentioned conventional problems.It has a relatively simple structure, can be easily attached to an object to be suspended, and does not require complicated adjustment. To provide a sling removal device that can be attached and detached by remote control without any hassle.

<<Structure of the invention>> In order to achieve the above object, the sling removal device of the present invention includes a hanging frame suspended from a crane, and a clamping device that is suspended from the hanging frame and capable of clamping the hoisting device of the lifted object. and a transmitter capable of remotely controlling the clamping operation of the clamping device, the clamping device being suspended from the hanging frame, and capable of controlling a hanging tool attached to the object to be lifted. A pair of shackle plates vertically facing each other, and a clamp device main body extending from one side of the pair of shackle plates in a direction perpendicular to the surface of the shackle plates and integral with the shackle plates. , is movable back and forth in the axial direction between a connection position in which the hanging tool and the shackle plate are connected through insertion holes provided therein, and a separation position in which they are separated from each other and separated from the insertion hole. The clamping device main body includes an electric cylinder device having a plunger fixed to the pin and moving back and forth in parallel with the axis of the pin, and a driving means for driving the electric cylinder device, Either the hanging frame or the clamp device main body is provided with a receiver that receives the clamp operation signal transmitted from the transmitter, and a control means that controls the drive of the drive means in accordance with the signal received by the receiver. It is characterized by having been provided.

<<Embodiments>> Hereinafter, preferred embodiments of this invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is an overall configuration diagram showing an embodiment of the sling removal device according to this invention.

The sling removal device shown in the same figure consists of hanging frames 10 and 2.
Four wire ropes 14, 14 are attached to the upper and lower ends of the hanging frame 10, and the pair of wire ropes 14 at the upper end are hung on a crane hook, and at the lower end. Clamp devices 12, 12 are suspended from the pair of wire ropes 14, respectively.

In this embodiment, the object to be suspended is the steel column 18.
A pair of hanging pieces (hanging tools) 20, 20 are protruded from both ends of the upper part, and a through hole is formed in each hanging piece 20, 20, respectively. The clamp device 12 includes a hanging piece 2
A pair of shackle plates 22, 22 vertically facing each other so as to sandwich 0, 20, and a connecting position where the two are connected by passing through the through hole of the hanging piece 20 and the insertion hole provided in the shackle plate 22. , a pin 2 that can move forward and backward in the axial direction between the through hole and a separation position where the two can be separated by separating from the through hole;
4,24.

The hanging frame 10 also includes a control device (control means) 3 having a controller 30 for controlling the receiver 26, the battery 28, and the drive of the electric cylinder 29 incorporated in the clamp device 12.
2 is mounted, and the display panel 34 of the control device 32 is exposed on the bottom surface.

The receiver 26 is connected to a transmitter 36 paired with the receiver 26.
The clamp operation signal, which is a wireless signal from It can be attached to and detached from the clamp devices 12, 12.

FIG. 2 shows details of the clamp device 12.

The clamp device 12 has shackle plates 22, 22.
A box-shaped device body 40 is provided that extends from one side in a direction perpendicular to the surface of the shackle plates 22 and is integral with the shackle plates 22, 22. An electric cylinder 29 and a solenoid (driving means) 42 for driving the cylinder 29 are housed.

The electric cylinder 29 has a plunger 44 that moves forward and backward parallel to the axis of the pin 24, and the tip of the plunger 44 is fixed to the rear end of the pin 24 via a connecting member 45, so that the axis of the pin 24 and the electric cylinder 29, and is spaced apart from the axis of the plunger 44 in the horizontal direction. A pair of limit switches 46, 46 are arranged near the plunger 44 at a predetermined interval along the axial direction of the plunger 44, detect the movement stroke of the plunger 44, and use the output to control the electric cylinder 2.
It is designed to stop the expansion and contraction of 9.

Further, above the shaft plate 22, a hanging metal fitting 4 for hanging the entire clamping device 12 is provided.
8 is installed.

FIG. 3 shows the electrical connection between the clamp device 12 and the control device 32.

The respective devices 12 and 32 are connected by a cable 50 routed along the wire rope 14 and connectors 52 and 52 attached to both ends thereof, and the clamp device 12 is connected to the transmitter 36 described above. A changeover switch 54 for selecting either remote control to be used or operation by hand switch
On/off push button switches 56 and 58 are provided, and display lamps 60 corresponding to the pair of limit switches 46 and 46 are lit on the display panel 34 of the control device 32 when the limit switches 46 are driven. electrically connected to

The sling removal device having the above configuration is operated according to the following procedure.

First, the slinging work to the steel column 18 is performed on the steel column 1.
Insert the No. 8 hanging piece 20 between the shackle plates 22 and align the insertion holes, set the changeover switch 54 of the clamp device 12 to the hand side, and press the push button switch 56 to turn it on.

As a result, the electric cylinder 29 is driven, and the pin 24 enters through the insertion hole of the shaft plate 22 to connect the steel column 18 and the clamp device 12. In this state, the lamp 60 of the display panel 34 is activated by the limit switch 46.
After checking, selector switch 5 is turned on.
4 to the remote control side.

Particularly in this case, since the clamp device main body 40 extends vertically from one side of the shackle plate 22 in a direction perpendicular to the surface of the shackle plate 22, the surface of the shackle plate 22 is oriented in the vertical direction.
Shackle plate 2 due to balance with device main body 40
2 is easily maintained in a vertical state when suspended, and since the device main body 40 is disposed only on one side of the shackle plate 22, the hanging piece 20 can be placed between the shackle plates 22, while the device body 40 is not present. The pin 24 can be inserted from the side, making it easy to insert the pin 24.

When the attachment of the clamp device 12 to each of the hanging pieces 20, 20 is completed, the steel column 18 is lifted up to a predetermined position by a crane and temporarily joined.

After that, when the on switch of the transmitter 36 is operated, a signal is transmitted to the antenna 38, the receiver 36, and the controller 30, and the electric cylinder 20 of the clamp device 12 is driven in the opposite manner to the above-mentioned slinging operation, and the pin 24 is driven. is moved back away from the shackle plate 22, allowing the clamping device 12 and the steel column 18 to be separated.

In this state as well, it is confirmed by the indicator lamp 60 that the pin 24 has been completely detached, in the same way as above.

Now, in the sling removal device constructed as described above, the clamp device 12 can be attached to the hanging piece 20 from below or from the side, and can be easily attached even when the steel column 18 is laid down, for example.

The clamp 12 also includes an electric cylinder 29,
It is composed of a pin 24, a shackle plate 22, etc., and has a simple structure that does not require complicated and troublesome adjustments.Since the electric cylinder 29 is a spindle type, external forces such as shocks are not applied during lifting. Even if the force is applied, the pin 24 does not move, so there is no need for a conventional brake device.

Furthermore, attachment and detachment of the pins 24 of the clamp device 12 can be confirmed from below by means of an indicator lamp 60 attached to the lower surface of the hanging frame 10, thereby preventing erroneous operations and improving safety.

Note that the above-mentioned attachment/detachment of the pin 24 can be confirmed by not only using the indicator lamp 60 but also by driving the limit switch 46 to sound a buzzer. After a certain period of time has elapsed after the limit switch 46 has been driven, the switch is forcibly switched, and after the installation is completed, the push button switches 56, 5 of the clamp device 12 are activated.
8 may be made inoperable.

Further, in the above embodiment, two clamp devices 1
Although the case where two are used is illustrated, the implementation of the present invention is not limited to this, and it is of course possible to use one.

Furthermore, the tool for hanging the object to be hung is not limited to the above-mentioned hanging piece 20, and may be a wire rope, for example. Also, the hanging piece 20 may not be directly inserted through the shackle plate 22, but may be interposed with another clamping material. It may also be attached to the clamp device 12.

<<Effects of the invention>> As explained above in detail in the examples, the sling release device according to the present invention has a simple and robust structure, and has various excellent effects such as not requiring complicated adjustments. can get.

In addition, since the clamping device main body is vertically extended in a direction perpendicular to the surface of the shackle plate and is integral with the shackle plate, the surface of the shackle plate is oriented in the vertical direction, and the shackle plate is It is easy to maintain the vertical position when suspended, and since the device body is located only on one side of the shackle plate, the hanging piece can be inserted between the shackle plates from the other side where the device body is not located. This makes it easy to insert the pin.

[Brief explanation of the drawing]

Figure 1 is a diagram showing the overall configuration of the sling removal device according to this invention, Figure 2 is a detailed diagram of the clamping device,
FIG. 3 is an explanatory diagram showing the electrical connections in FIG. 1. 10... Hanging frame, 12... Clamping device, 14
... Wire rope, 18 ... Steel column, 20 ... Hanging piece (hanging tool), 26 ... Receiver, 29 ...
Electric cylinder device, 32... Control device, 36...
Transmitter, 40... Clamp device main body, 42... Solenoid (driving means), 44... Plunger.

Claims (1)

[Scope of Claim for Utility Model Registration] A hanging frame suspended from a crane, a clamping device that is suspended from the hanging frame and capable of clamping a lifting device for an object to be lifted, and the clamping operation of this clamping device can be remotely controlled. A sling release device comprising a transmitter, the clamp device being suspended from the hanging frame,
A pair of shackle plates vertically facing each other so as to sandwich a hanging tool attached to the object to be lifted; a clamping device main body integral with the shackle plate;
It is movable back and forth in the axial direction between a connection position where the hanging tool and the shackle plate are connected through insertion holes provided thereinto and a separation position where they are separated from each other and separated from the insertion hole. The clamping device main body includes an electric cylinder device having a plunger fixed to the pin and moving back and forth in parallel with the axis of the pin, and a driving means for driving the electric cylinder device, Either the frame or the clamp device main body is provided with a receiver that receives the clamp operation signal transmitted from the transmitter, and a control means that controls the drive of the drive means in accordance with the signal received by the receiver. A sling removal device characterized by: