KR0123632Y1 - Opening and shutting apparatus of manhole cover - Google Patents

Abstract

The present invention relates to an artificial retractor lid switch for easily opening and closing an artificial retractor lid installed on the ground where a cable is buried underground in a telecommunication construction. Its purpose is to help workers who suffer from occupational illnesses that open and close with little force and suffer from back pain.

The present invention has a through hole is formed in the upper portion and the locking jaw is bent outwardly inclined to the lower portion is formed on one axis and the spring support projection protrudes on one axis of the moving space formed therein, inserted into the moving space of the bundle The lower part of the lower part bent inclined outwardly is integrally formed, and on one side, a spring support protrusion is protruded, and an insertion part composed of a push spring inserted into the spring support protrusion and inserted into the spring support protrusion is connected to the through hole. A plurality of chains: a lever of a geometric shape connecting and supporting the chains; And a lower portion forming a saw blade for fixing with the ground, and an upper portion of the artificial retractor lid, wherein the upper portion comprises a lever support for supporting the lever.

Description

Switchgear

1 is a perspective view of the insertion and detachment unit according to a preferred embodiment of the present invention.

Figure 2 (a) is a side cross-sectional view of the insertion portion showing the state before pressing the push button before insertion of the artificial retractable lid according to a preferred embodiment of the present invention, (b) is a view showing the state after pressing the push button Side view.

(A) of FIG. 3 is a top view of a conventional artificial lid, (b) is a front view thereof, and (c) is a sectional view showing a state where the artificial lid is installed on the ground.

(A) and (b) of FIG. 4 are diagrams showing a state in which an artificial protruding cap is opened by mounting an inserting part to a lever and installing a pedestal.

* Explanation of symbols for main parts of the drawings

1: bundle 2: push

2,3: Hanging jaw 4,4 ': Spring support protrusion

5: compression spring 6: through-hole

7: moving space 8: artificial lid

9: chain 10: crowbar

11: floor 2: switchgear handle

13: Crowbar Base 14: Wonju Home

15: saw blade 20: inserting part

The present invention relates to a switch of the artificial torch lid for easily opening and closing the circular artificial torch lid installed on the ground where the cable is buried underground during the telecommunication construction.

Typically, the weight of the artificial retraction cap is 200 ~ 280kg weight, approximately 2500 artificial retraction caps are installed per telephone station, installed in 350 telephone stations nationwide, about 880,000 artificial retraction caps.

In general, the artificial lid is opened and closed in a manner in which a worker exerts force by inserting it into a rectangular groove of the artificial retraction lid or a longitudinal semi-cylindrical groove in the circumferential direction by means of a pickaxe.

However, the worker has to open and close 40 to 50 artificial retractor caps per day, but to open and close using a pickaxe, it must be inserted into the groove and turned to open and close, so that a large load on the worker's waist has a great force Occupational disease patients who are not only consumed but also have pain in the lower back have been increasing day by day.

This caused a problem that the work efficiency is lowered, thus increasing the number of occupational disease patients injured while working excessively to improve work efficiency.

The present invention has been made to solve the above-mentioned conventional problems, the operator can open and close the artificial retraction cap of 200 ~ 280kg weight with little force, and help the worker suffering from occupational diseases that pain in the lower back, carrying And an artificial retractor switch that is convenient to carry or use.

In order to achieve the above object, the present invention is formed on the top and bent inclined outwardly to the lower locking jaw is formed on one axis, and the spring support projection protrudes at the sunrise of the moving space formed therein, the bundle Inserted into the moving space of, the lower end is bent inclined outwardly integrally formed, the locking jaw is integrally formed with a spring support projection protrudes on one axis and a shovel composed of a compression spring inserted into the spring support projections Dislocation; A plurality of chains connected to said through hole; The lever of the geometric shape connecting and supporting the chain: and the lower portion is formed with a saw blade for fixing with the ground, the upper is characterized in that consisting of the lever support for supporting the lever.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

1 is a perspective view of the inserting and detaching portion according to a preferred embodiment of the present invention, Figure 2 (a) is a side cross-sectional view showing the state before pressing the push button before insertion of artificial prosthesis according to a preferred embodiment of the present invention In addition, (b) is a side sectional view which shows the state after insertion after pressing a pushbutton.

Referring to the same figure, in order to be hooked on the chain 9, the bundle 1 having a through hole 6 formed therein has a quadrangular moving space 7 which is limited in its movement. Subsequently, one axis of the moving space 7 has a pusher 2 inserted therein, and the other side has a structure in which a cylindrical spring support protrusion 4 protrudes. The lower part is integrally formed with a locking step (3) bent inclined so as to be caught outward in the quadrilateral groove of the artificial retraction cap (8).

The pusher 2 has a locking projection 3 'which is inclined outwardly at the lower side similarly to the bundle 1 described above, and a spring supporting protrusion 4' is formed on the upper one shaft to provide a compression spring 5 Both ends of the) is inserted in close contact with the spring support protrusion (4, 4 ') to perform an elastic function.

In the above-described configuration, when the operator manually presses one end of the pusher 2, the touched pusher 2 moves to the right in a limited manner, and after being inserted into the square groove of the artificial retraction cap 8, When the depressed presser 2 is released, the locking jaws 3 and 3 'are hooked to the artificial retraction cap 8. The reason why the upper portion of the above-mentioned (3, 3 ') is tapered is to prevent it from being easily pulled out after being caught in the quadrilateral groove of the lid 8.

(A) of FIG. 3 is a top view of a conventional artificial retracting lid, (b) is a bottom view thereof, and (c) is a sectional view showing a state where the artificial retracting lid is installed on the ground.

Referring to the same figure, the general artificial retraction lid 8 is formed with a rectangular groove facing each other, the rectangular groove is formed in communication with the lower side. In addition, the rear surface thereof is formed with a circumferential groove 14 in the circumferential direction, and a circumferential groove having a corresponding shape is also formed in the ground 11 that is closely corresponding thereto.

(A) and (b) of FIG. 4 is a figure which shows the state which opens and closes the artificial lid | cover 8 by attaching the insertion-and-release part to the lever 10. As shown in FIG.

Referring to the same figure, a plurality of chains 9 are connected to one axis of the lever 10 with a plurality of chains 9 in the through hole 6 of the opening and closing of the artificial retraction lid, and the inserting portion 20 is attached to the lid 8 at a corresponding height. When inserted into the square groove of the insertion part 20, the locking jaw (3 ') of the inserting portion 20 is inserted into the circumferential groove (14) formed on the bottom of the artificial retraction cap (8), the operator of the geometric lever 10 Holding the switch knob 12 with both hands and pulling in the direction of the arrow, the artificial retraction lid 8 is turned upward and moved to the right to open.

In the above operation, the lower portion on the ground (asphalt or soil) to form a saw blade portion 15 so as not to slide by friction with the ground, the upper portion of the lever base 13 is a structure that is coupled to the lower end of the lever 10 Install it.

This is simply designed to support the lower portion of the lever 10 with the lever support 13 on the ground 11 to easily open the artificial retraction lid only by the arm of a simple operator.

If necessary or installed according to the ground rotatable pedestal 10 by pulling the lower portion of the lever 10 as a support point on the pedestal can be opened and closed more easily.

In addition, when closing the place where the cable is buried again with the artificial lid (8), the insertion part 20 is removed from the artificial lid (8) and installed in a square groove formed on the opposite side of the lid so that the operator stands on the opposite side. Pulling the lever 10 is easy to close.

Looking at the effect according to the above-described configuration and action, opening and closing the artificial retractable lid with a small force has improved work efficiency, the pain caused by the back pain caused by the conventional pickaxes also disappears, and also several instruments It is composed of only the insertion part, the chain, the lever and the support of the lever, it is easy to carry and the effect that anyone can easily install is achieved.

Claims (1)

A through hole 6 is formed in the upper portion, and a locking projection 3 bent outwardly inclined to the lower portion is formed on one axis, and a spring support protrusion 4 protrudes on one axis of the moving space 7 formed therein ( 1), the locking jaw (3 ') is inserted into the moving space (7) of the bundle (1) is bent inclined outwardly integrally is formed integrally and spring support projection (4') on one axis is movable Insertion part (20) consisting of a presser (2), and a compression spring (5) inserted into the spring support projection (4, 4 ') and carried out: a plurality of chains (9) connected to the through hole (6) ; A lever of geometric shape (10) for supporting the chain (9); And a lower portion forming a saw blade portion 15 for fixing with the ground, and an upper portion of the artificial retractor lid of claim 13, wherein the upper portion is composed of a lever support 13 for supporting the lever 10.