KR200434051Y1 - Fix and separation of manhole cover - Google Patents

Abstract

Existing manholes are manufactured and used in two types: manholes with locking devices (bolt fastening) and manholes without locking devices. Saga manholes and all types of manholes are also used in two different ways. However, the existing lock manholes or manholes without locks are difficult to separate due to sand or foreign matter between the manhole and the manhole pedestal when cleaning or opening the manhole cover as needed. There is a disadvantage of opening by adding a bolt that is designed to lock, loosen and detach the lid by using the existing locking device bolt to eliminate this problem and to provide a structure that can be easily separated and opened.

Manhole cover, manhole support, bolt, flat washer, snap ring, washer for lifting, washer groove, locking jaw

Description

Manhole Cover Locking and Separation Device {FIX AND SEPARATION OF MANHOLE COVER}

Figure 1: Conventional manhole cover (for bolt locking)

Figure 2: Manhole switchgear coupling diagram according to the present proposal

3 is a cross-sectional view of the manhole cover and manhole support of the switchgear of FIG.

4 is a cross-sectional view of the bolt assembly and lid lifter used in the opening and closing device of FIG.

Figure 5: Locking state after assembly of the lid according to the present proposal

Figure 6: State diagram for solving the first step according to the proposal

Figure 7: Manhole cover separation state according to the present proposal

Existing bolt lock manholes simply prevent the removal of the manhole cover on the road. Also, there is no alternative for opening after long time use. Products without bolt lock may be detached, but according to manufacturing cost of two products Due to the difference, the situation is being used according to the purpose of use, while the recently developed dossier manhole cover separating device has a lot of problems in manufacturing cost and practical application due to the complexity of the structure and the difficulty of manufacturing, and thus it is not practical for use. There are many restrictions on actual use

Therefore, this paper is easy to open and remove the lid without any special manufacturing problems or development costs, so all manholes (including squares) can be used without the need to distinguish between products with existing manhole locks and products without locks. By using this locking device, not only can easily be separated, but also the noise and departure that can occur on the road, and the prevention of safety accidents, personnel and time due to the open separation can be seen in the budget, and has many advantages in many aspects. The main focus is on the technical task.

The following is a detailed description of the proposal to achieve the above technical problem. The locking manhole (refer to Fig. 1) generally used now forms a seating structure (① in Fig. 1) in which the locking bolt can be inserted in three parts (120 degree intervals) in the casting process by manipulating the core in the casting process. In the year-end manhole cover, use a middle ruler (Fig. 3) or screw tap to secure a flat surface (② in Fig. 1) where the washer can be seated. ) After the washer (④ in Figure 1) is inserted into the structure to lock the lid using the nut (⑤ in Figure 1), but this is a structure that can only lock. This proposal secures a flat surface (6 in Fig. 3) in the outer shape without a core treatment on the seating structure of the supporting part to form a locking tab (⑦⑭ in Fig. 3). On the other hand, the corresponding manhole cover is manufactured by adding a shape (8 in FIG. 3) corresponding to the outer shape of the support.

Then, after mounting the lid on the manhole support, insert the assembled bolts along the groove of the washer moving space (Fig. 3). After inserting, tighten the bolt and lift the washer part (Fig. 4) below the bottom of the manhole cover and tighten it until it is fully locked. The core of this paper is to open and close the lid, so if you unscrew the bolt to open it in the locked state, the bolt rises and lifts the bolt more than a certain part during the detachment from the tab part of the bottom of the manhole support. ) Is caught by the locking projection (⑨ of Figure 3) protruding from the bottom of the lid, and from this time, as the additional bolt is loosened, the lifting washer (Fig. 4) touches the bottom of the manhole cover and applies the same force to the lid from the pedestal. Ascending separation to a constant height (Fig. 5. Fig. 6. Fig. 7). Subsequently, the lid is separated and disassembled by simply lifting it up without the need for a separate lid separator.

This proposal does not incur any cost difference from existing products except for the cost of lid lifters, snap rings, and snap ring grooves in bolts. There are also partial cost savings, and there is no problem in the practical application.

In addition, all the products of current design can be used as it is by partially modifying the mold, which has the advantage of not incurring the cost of product development.

Without any distinction between existing products with locks and other products without locks, all products and locks can be prevented from being released through roads. It is possible to predict safety accidents that may occur in case of excessive opening, so it can be applied immediately because it has many advantages in various aspects.

Claims (1)

In the device for locking, releasing and detaching the seat of the manhole after seating, it protrudes in three parts of the manhole cover (the existing manhole cover is entirely round in shape, but the protrusion in the present invention is 120 out of the outer part of the lid). In the semicircular shape at the interval of the figure ("A" in Fig. 2), the lifting washer groove (Fig. 3 16), the bolt washer groove (Fig. 3), and the lower part of the shape. Hanging jaw for lifting washer (located on the back of the lid, which is lifted up by the lifting washer when it reaches the point where the lifting washer is caught on the locking jaw and can no longer rotate) (Fig. 3 ⑨) And a seating surface (⑥ in FIG. 3), a tab portion (7 in FIG. 3), or a nut insert type (“3” or “3” in FIG. 3) and a bolt used therein. Bolts (Fig. 4) and lifting washers (Fig. 4) Manhole cover according to the device to be finally separated from the manhole cover and this support by a washer for manhole inaudible.

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