JPH0242952U - - Google Patents

Description

[Brief explanation of drawings]

Figure 1 is a vertical side view of the receiving frame when the lid is closed, Figure 2 is a bottom view of the iron lid with the floating prevention hardware removed, Figure 3 is an enlarged slope view showing a part of the iron lid cut away, and Figure 4 Figure A, Figure 4 B, and Figure 4 C are partially cutaway perspective views showing the operating state of the floating prevention hardware, and Figures 5 A and 5 B clearly explain the mounting part of the floating prevention hardware. FIGS. 6A and 6B are enlarged perspective views of the floating prevention hardware.

Claims (1)

[Scope of utility model registration request] An iron lid floating prevention hardware 20 that is fitted into the steeply inclined inner surface 2 of the receiving frame 1 and locked to the inner engaging part 3 of the receiving frame 1
The iron lid 30 is provided with a groove 31 along the outer periphery of the iron lid 30 into which the hand hook 41 of the crowbar-cum-hand hook 40 is inserted, and the iron lid floating prevention hardware 20 is It is attached to a shaft 50 horizontally suspended on the iron lid 30 so as to rotate and reciprocate along the shaft 50, and a crowbar/hand hook 40 is attached to one end of the iron lid flotation prevention hardware 20.
An operating convex portion 21 is provided that can freely move forward and backward in the groove 31 for inserting the hand hook 41 and move in the lateral direction. The first cam 32 provided inside the
A weight 22 is guided by a second cam 33 and reciprocated in the axial direction of the shaft 50, and a key 25 is locked to the inner engagement part 3 of the receiving frame 1. The operating convex portion 21 is pushed down, and the first cam 32 is used to push down the weight 2 of the metal lid floating prevention hardware 20.
2, move the iron lid floating prevention hardware 20 to one side along the shaft 50, move the key 25 away from the inner engagement part 3 of the receiving frame 1, and unlock it. Release the lock from the crowbar/hand hook 40, press down the crowbar/hand hook 40 further, rotate it 90 degrees, and then tighten the crowbar/hand hook 40.
1 to the lower surface of the iron lid 30 and the crowbar/hand hook 40
Lift the iron lid 30 to open the manhole, close the iron lid 30, and open the crowbar/hand hook 4.
The hand hook 41 of 0 is pulled out from the groove 31, and the second cam 3 contacts the dead weight of the weight 22 and the other side surface 24 of the weight 22.
3, move the iron lid floating prevention hardware 20 to the other side along the axis 50, engage the key 25 of the iron lid floating prevention hardware 20 with the inner engaging part 3 of the receiving frame 1, and then press the locking lid into the operating convex part 21. A device for preventing and locking rainwater from entering a manhole cover, characterized in that the groove 31 of the iron cover 30 is sealed by using the iron cover 30.