JPH0320439Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" This invention relates to a vibration isolation device for work gondolas that are suspended from the vertical surfaces of structures such as buildings and dams for inspection or repair work. be.

``Problems that conventional technology and ideas cannot solve'' Generally, when inspecting or repairing a structure using a work gondola, the work may shake the work gondola, and the work may be stopped in strong winds. However, even when working in light wind conditions, unexpected gusts of wind may occur suddenly.

However, since conventional work gondolas are simply suspended from the top, there is no means to deal with shaking caused by work or gusts of wind, making it difficult to ensure the safety of workers.

"Means for solving the problem" This invention aims to solve the above-mentioned conventional problem.
A cylindrical body is attached to the left and right sides of the work gondola so that it can move forward and backward, and with the rear end of this cylindrical body locked to a stopper, a shaft inserted inside the cylinder is moved forward by rotating the handle, and the shaft is moved freely to the tip of the shaft. The suction cup attached via the joint is pressed against the work surface of the structure, and the air inside the suction cup is sucked and adsorbed by a vacuum pump. In this state, the stopper is released and the rear end of the cylinder is supported via a spring. The present invention proposes a vibration isolating device for a working gondola, which prevents the working gondola from swinging from side to side by elastically supporting it on a receiving part, and elastically supporting it in the front-back direction.

"Embodiment" Below, an embodiment of this invention shown in the drawings will be described. A cylinder 3 is attached to annular support fittings 2, 2' fixed to the side surface 1a of a working gondola 1 so as to be able to move back and forth in the front and rear directions. A shaft 4 is inserted into the shaft so that it can move forward and backward.

The shaft 4 has a male thread 5 around it, and is moved forward and backward by rotating a handle 7 provided on the shaft of a worm gear 6 that meshes with the male thread 5, and has a universal joint such as a ball joint at its tip. A suction cup 9 is attached via 8.

A pipe 11 from a vacuum pump 10 is connected to the suction cup 9, thereby sucking the air inside and strongly adhering it to the surface of the object.

A protrusion 12 is provided at the rear end of the cylinder 3,
A hook-shaped stopper 13 is attached to the gondola side surface 1a near the base end of the protrusion 12 so as to be rotatable in the vertical direction. , and when it is rotated upward, it is configured to separate from the rear end surface and release the engagement.

A cylindrical support member 14 fixed to the work gondola 1 is provided behind the projection 12, and a compression spring 15 loaded inside the support member 14 presses the cylinder 3 forward through the projection 12. .

"Operation of the invention" In the above configuration, when fixing the work gondola 1 suspended from the upper part of the structure K, the stopper 13 is engaged with the rear end of the cylinder 3, and this is used as a reaction force to control the handle 7. The shaft 4 is advanced by rotation, and the suction cup 9 at the tip is pressed against the wall surface of the structure 1,
The vacuum pump 10 is operated to completely attract the suction cup 9.

In this state, the stopper 13 is removed to open the rear end of the cylindrical body 3, which is supported by the elasticity of the spring 15 at the rear end.

In this case, as shown in Figure 3, the work gondola 1
If it tries to swing backwards excessively, the protrusion 1
The locking flange 12' at the tip of the support member 14 engages with the locking flange 14' at the tip of the support member 14 to limit swinging.

Also, as shown in FIG. 4, when the work gondola 1 tries to swing forward excessively, the support member 1
4 hits the rear end of the cylindrical body 3 to limit the swinging.

In this way, the work gondola 3 is prevented from swinging from side to side, and is elastically supported by the spring 15 in the front-back direction, so that swings and vibrations can be buffered.

``Effect of the invention'' As described above, according to this invention, a cylinder body into which a shaft is inserted that moves forward and backward by the rotation of the handle is attached to the left and right sides of the gondola so as to be able to slide back and forth, and the air inside is pumped to the tip of the shaft using a vacuum pump. A suction cup capable of suction is attached via a universal joint, supported on a support member via a spring that applies an elastic force to the front of the rear end of the cylindrical body, and engaged with the rear end of the cylindrical body. Since a removable stopper is attached to the work gondola, the shaft is moved forward by rotating the handle with the rear end of the cylindrical body locked to the stopper, and the suction cup at the tip is pressed against the work surface of the structure. By suctioning and adsorbing the air inside with a vacuum pump, the working gondola can be fixed to the wall of the structure and prevented from swinging from side to side.

In addition, by releasing the stopper in this fixed state, the rear end of the cylinder is elastically supported by the support member via the spring, and the back end of the cylinder is elastically supported by the support member, which buffers the longitudinal shaking and vibration of the work gondola. can be supported.

[Brief explanation of the drawing]

Figure 1 is a perspective view of a working gondola equipped with the vibration isolator of this invention, Figure 2 is a vertical side view showing the suction state of the suction cup in the vibration isolator of this invention, and Figure 3 is a view of the same rearward swing. Vertical side view showing the limit state, No. 4
The figure is a longitudinal side view showing the forward swinging state. 1... Working gondola, 2, 2'... Supporting metal fittings,
3...Cylinder body, 4...Shaft, 5...Male thread, 6
... Worm gear, 7 ... Handle, 8 ... Universal joint, 9 ... Suction cup, 10 ... Vacuum pump, 11 ...
...Pipe, 12...Protrusion, 13...Stopper,
14...Spring, K...Construction.

Claims (1)

[Scope of utility model registration request] A cylindrical body into which a shaft that moves forward and backward by the rotation of the handle is inserted is attached to the left and right sides of the gondola so as to be able to slide back and forth, and a suction cup capable of suctioning the internal air by a vacuum pump is attached to the tip of the shaft via a universal joint. The work gondola is characterized in that the rear end of the body is supported by a support member via a spring that applies an elastic force to the front thereof, and a stopper that can be freely engaged and disengaged is attached to the rear end of the cylinder body. Work gondola vibration isolation device.