KR102243331B1 - Square manhole One-touch safety device Manhole cover - Google Patents

Abstract

The present invention relates to a square manhole one-touch safety device manhole cover and, more specifically, to a square manhole one-touch safety device manhole cover comprising: a square cover frame having an inner surface on which a catching step and a pair of fitting holes are formed; a pair of square manhole covers fitted to the square cover frame, having acting holes and having acting housings with acting devices and through holes at the bottom; a fixation head disposed within the acting housing and having one end fitted into the fitting hole; a fixation member formed at the fixation head and having an acting rod with a tip end penetrating the through hole to be arranged; a catching washer disposed at the tip end of the acting rod; a catching unit formed of a fastening bolt penetrating the catching washer to be fastened to an end portion of the acting rod; and an elastic coil spring fitted around the acting rod to press the fixation head toward the catching step, wherein a catching shaft is formed in the square cover frame and a catching hook is arranged in the square manhole cover coupled to the square cover frame to be detachably fastened to the catching shaft such that the square manhole covers together with the fixation member are detachably fixed in the square cover frame, thereby being dually fixed to make firm fixation possible and preventing movement due to external force.

Description

Square manhole One-touch safety device Manhole cover}

The present invention relates to a square manhole one-touch safety device manhole cover, and in more detail, a locking shaft is formed on a square lid frame, and a locking hook is provided to be detachably fastened to the locking shaft on the square manhole cover fastened to the square lid frame. Thus, by making the square manhole cover detachably fixed to the square lid frame together with the fixing member, the square manhole one-touch safety device manhole cover that is fixed in double so that it can be securely fixed and is prevented from being moved by external force will be.

In general, a manhole is a hole made underground on the road surface so that people can enter it, and the place to install it is a place where the thickness and direction of a pipe changes, a starting point or intersection, or in the middle of a long straight line. It is also used for ventilation or communication of pipes. As for the shape, there are many circles that are easy to construct, and there are also squares and ovals. The entrance is framed with a frame made of iron or stone, and a circular lid made of cast iron or reinforced concrete, usually about 60 cm in diameter, is covered. The main body is made of concrete or brick, and the inner diameter of the passage hole is often 1~1.2m. The floor should be flush with the bottom of the conduit, or slightly lowered to accommodate the sediment. The depth varies depending on the depth of the pipeline, but some are over 100m deep.

These manholes go inside after separating the cover from the buried frame, and provide artificial manholes for new or repair of electricity, communication, water and gas facilities buried in the ground, and sewage and rainwater from roads. It is divided into manual manholes for collection and is installed and used on concrete and asphalt concrete roads.

Among these manholes, in the case of an underground distribution manhole installed on an underground distribution line, the manhole body is provided with a rubber packing between the cover and the cover frame in order to prevent rain from flowing into the inside of the manhole. It is composed of a structure in which a ring-shaped rubber packing is inserted into the annular groove on the lower surface of the outer lid among the inner lids.

However, the waterproof structure of such a conventional manhole cover increases the number of years of use of the manhole cover and the number of openings of the cover increases, so that the rubber packing is pushed to the outside of the annular groove by the weight of the cover and cracks, or it is completely separated from the annular groove and is waterproof. There was a problem of losing the function. In this case, when the waterproof function is lost, there is a problem of wasting manpower and costs for draining and cleaning sewage and rainwater from the road flowing into the manhole.

In addition, due to this, there is a problem that the lifespan of the underground cable installed inside the manhole is significantly reduced or damaged, thereby lowering the trust of users.

In order to solve this conventional problem, a lid made of an outer lid exposed to the outside of the road and an inner lid provided on the inside of the outer lid; A lid frame for supporting the lid; Consisting of including a waterproof sheet made of rubber material having a plate-shaped body interposed between the outer lid and the inner lid, the body of the waterproof sheet is formed in the same shape as the lid, and the edge of the body is the lid frame The waterproof structure of the manhole cover, characterized in that the airtight portion is formed upward so as to be interposed between the inner surface of the outer circumferential surface of the cover and the outer circumferential surface of the cover, and the airtight portion of the waterproof sheet is formed to become thinner toward the end. As of the date, the utility model registration was announced under the registration number 0300931.

Such a conventional manhole cover is seated on the inside of the cover frame under the weight of the manhole cover itself, and a rubber waterproof sheet is interposed between the cover frame and the manhole cover to fundamentally block the inflow of sewage or rainwater through the manhole cover. However, if the severe temperature difference on the road that is hot in summer and cold in winter is repeated for a certain period of time, the rubber waterproof sheet is hardened and its elasticity gradually decreases, so close airtightness is not achieved. Bars that need to be replaced, there is a problem that the area of the waterproof sheet is wider than that of the manhole cover, so that the replacement cost is high.

In addition, as the vehicle runs or stops at the top of the manhole cover, the manhole cover must bear the load of the vehicle body, so the rubber waterproof sheet located between the cover frame and the manhole cover undergoes rapid deformation and the replacement time is further accelerated. There was this.

In addition, if deformation occurs due to its own load on only one side of the manhole cover due to driving and stopping of the vehicle, the manhole cover will be lifted every time the vehicle progresses within the cover frame, causing the manhole cover to come off at some point and cause a safety accident. There was a problem.

Recently, in order to solve these conventional problems, a locking device is installed on the manhole cover and fixed to the manhole frame, thereby reducing noise generated by external shocks and preventing the manhole cover from being separated, and by the elasticity of the elastic spring. Manholes are being developed that significantly reduce noise due to external shocks by configuring the manhole cover to be fixed to the manhole frame by a pressure head. There is always a problem that it is difficult to fix firmly without.

The above-described invention refers to the background art of the technical field to which the present invention belongs, and does not mean the prior art.

Registered Patent No. 10-1629399

The present invention was conceived to solve the above-described conventional problem, and an object of the present invention is to form a locking shaft on a square lid frame, and to be detachably fastened to the locking shaft on a square manhole cover fastened to the square lid frame. A square manhole one-touch safety device that provides a locking hook so that the square manhole cover together with the fixing member is detachably fixed to the square lid frame, so that it is double fixed and securely fixed, and prevents movement by external force. Its purpose is to provide a manhole cover.

The present invention includes a square lid frame having a locking jaw and a pair of fitting holes formed on the inner surface thereof, and a pair of square manhole lids formed on the bottom surface of which an operation housing is formed by being fitted to the square lid frame, and having an operating tool and a through hole, A fixing member comprising a fixing head disposed inside the operating housing and having one end inserted into the fitting hole, an operating rod formed on the fixing head and disposed through the through hole, and disposed at the end of the operating rod. A locking washer, and a locking part composed of a locking bolt that penetrates through the locking washer and is fastened to the end of the operating rod, and an elastic coil spring that is inserted into the operating rod and presses the fixing head in the locking jaw direction. It is done.

In addition, the rectangular lid frame is characterized in that the locking shaft is further formed on both inner sides, and a pair of locking hooks are further formed on one side of the bottom surface of the square manhole cover so as to be engaged with the locking shaft.

In addition, the locking shaft formed on the square lid frame is formed in a semicircular column shape, the curved guide surface formed on the locking shaft is formed to face the lower portion of the square lid frame, and the locking hook is the locking shaft It is characterized in that it is to be supported as well as being caught on the guide surface of.

In addition, a fastening groove is further formed on the locking shaft, and a fastening protrusion is further formed at an end of the locking hook so as to be fitted into the fastening groove on an inner surface.

In addition, the locking shaft is made of a pair of buffer shafts, and connection brackets are further formed on both sides of the square lid so that the ends of the buffer shaft are hinged to rotate, and the buffer shafts are interconnected by a pressure coil spring. As a result, it is pressed by the elasticity of the pressure coil spring, and an elastic support panel is further fastened to the buffer shaft to support the locking hook.

The inventors' square manhole one-touch safety device manhole cover forms a locking shaft in a square lid frame, and a locking hook is provided so as to be detachably fastened to the locking shaft in the square manhole cover fastened to the square lid frame, and the square manhole together with the fixing member By allowing the lid to be detachably fixed to the square lid frame, it is double-fixed to enable a solid fixation, and there is an effect of preventing it from being moved by an external force.

1 is a perspective view showing a square manhole one-touch safety device manhole cover according to the present invention.
Figure 2 is an exploded perspective view showing a square manhole one-touch safety device manhole cover according to the present invention.
Figure 3 is a perspective view showing the fastening process of the square manhole one-touch safety device manhole cover according to the present invention.
Figure 4 is a cross-sectional view showing a square manhole one-touch safety device manhole cover according to the present invention.
5 is a partially enlarged cross-sectional view showing a manhole cover of a square manhole one-touch safety device according to the present invention.
Figure 6 is a partial enlarged view showing a square manhole one-touch safety device manhole cover according to the present invention.
Figure 7 is a partial enlarged view showing another embodiment of the square manhole one-touch safety device manhole cover according to the present invention.
Figure 8 is a partially enlarged plan view showing another embodiment of a square manhole one-touch safety device manhole cover according to the present invention.
9 is a partially enlarged front view showing another embodiment of a square manhole one-touch safety device manhole cover according to the present invention.

Since the description of the present invention is merely an embodiment for structural or functional description, the scope of the present invention should not be construed as being limited by the embodiments described in the text. That is, since the embodiments can be variously changed and have various forms, the scope of the present invention should be understood to include equivalents capable of realizing the technical idea.

Meanwhile, the meaning of the terms described in the present invention should be understood as follows.

Terms such as "first" and "second" are used to distinguish one component from other components, and the scope of rights is not limited by these terms. For example, a first component may be referred to as a second component, and similarly, a second component may be referred to as a first component.

When a component is referred to as being "connected" to another component, it should be understood that although it may be directly connected to the other component, another component may exist in the middle. On the other hand, when it is mentioned that a component is "directly connected" to another component, it should be understood that there is no other component in the middle. On the other hand, other expressions describing the relationship between components, that is, "between" and "just between" or "neighboring to" and "directly neighboring to" should be interpreted as well.

Singular expressions are to be understood as including plural expressions unless the context clearly indicates otherwise, and terms such as "comprises" or "have" refer to implemented features, numbers, steps, actions, components, parts, or It is to be understood that it is intended to designate that a combination exists and does not preclude the presence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

In each step, the identification code (e.g., a, b, c, etc.) is used for convenience of explanation, and the identification code does not describe the order of each step, and each step has a specific sequence clearly in the context. Unless otherwise stated, it may occur differently from the stated order. That is, each of the steps may occur in the same order as the specified order, may be performed substantially simultaneously, or may be performed in the reverse order.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the field to which the present invention belongs, unless otherwise defined. Terms defined in commonly used dictionaries should be interpreted as having meanings in the context of related technologies, and cannot be interpreted as having an ideal or excessively formal meaning unless explicitly defined in the present invention.

1 is a perspective view showing a square manhole one-touch safety device manhole cover according to the present invention. Figure 2 is an exploded perspective view showing a square manhole one-touch safety device manhole cover according to the present invention. Figure 3 is a perspective view showing the fastening process of the square manhole one-touch safety device manhole cover according to the present invention. Figure 4 is a cross-sectional view showing a square manhole one-touch safety device manhole cover according to the present invention. 5 is a partially enlarged cross-sectional view showing a manhole cover of a square manhole one-touch safety device according to the present invention. Figure 6 is a partial enlarged view showing a square manhole one-touch safety device manhole cover according to the present invention. Figure 7 is a partial enlarged view showing another embodiment of the square manhole one-touch safety device manhole cover according to the present invention. Figure 8 is a partially enlarged plan view showing another embodiment of a square manhole one-touch safety device manhole cover according to the present invention. 9 is a partially enlarged front view showing another embodiment of a square manhole one-touch safety device manhole cover according to the present invention.

As shown in the drawing, the inventors' square manhole one-touch safety device manhole cover 10 (hereinafter referred to as a safety device manhole cover for convenience of description) is manufactured by casting, and is placed on the upper part of the catcher. It is detachably installed by an anchor bolt and made of a metal material, and a square locking jaw is integrally formed on the inner surface.

In addition, a pair of fitting holes 21 are formed on the inner surface of the square lid frame 20 as shown in the drawing.

The square lid frame 20 is formed in a rectangular frame shape.

The square manhole cover 30 is made of a pair, manufactured by casting, and fitted into the square cover frame 20. Operation holes 31 are formed in the square manhole cover 30, and a pair of operation housings 32 having an operation tool 321 and a through hole 322 are formed on the bottom surface.

The operation housing 32 is formed integrally with the square manhole cover 30, and may be fixed by welding.

The square manhole cover 30 is formed in a rectangular panel structure.

The fixing member 40 is to fix the square manhole cover 30 to the square lid frame 20, the fixing member 40 is disposed inside the operation housing 32, and one end is the coupling hole It is composed of a fixed head 41 fitted into the 411, and an operating rod 42 formed integrally with the fixed head 41 and having an end disposed through the through hole 322.

At this time, the fixing head 41 is further formed with a coupling groove, and the operator inserts the working shaft through the manipulation hole 31 into the coupling groove, and then inserts the fixing head 41 into the elastic coil spring 60. By pressing in the direction and allowing the fixing head 41 to be separated from the fitting hole 21, the square manhole cover 30 can be separated from the square manhole frame.

The locking part 50 is a locking washer 51 disposed at the end of the operating rod 42, and a fastening to be fastened to a bolt hole formed at the end of the operating rod 42 through the locking washer 51 It consists of a bolt 52.

The locking washer 51 prevents the end of the operating rod 42 from being drawn into the operating housing 32.

The elastic coil spring 60 is fitted into the operating rod 42 to press the fixing head 41 in the direction of the fitting hole 21.

A part of the fixing head 41 is fitted into the fitting hole 21 by the elasticity of the elastic coil spring 60 to prevent the square manhole cover 30 fitted in the square manhole frame from being moved or removed. You will be able to.

The square lid frame 20 is further formed integrally or welded with locking shafts 22 on both inner sides,

A pair of locking hooks 33 are further formed on the bottom surface of the square manhole cover 30 so as to be engaged with the locking shaft 22 on one side, so that the locking hook 33 is hooked to the locking shaft 22 and fixed. In addition, by supporting the fixing head 41 and then inserting the fixing head 41 into the fitting hole 21, the square manhole lids 30 are prevented from colliding or rubbing with each other, and the square manhole lids 30 are It is possible to prevent the abutting portion from being lifted upward in the drawing due to external impact or the elasticity of the elastic coil spring 60.

The locking hook 33 is formed integrally with the square manhole cover 30.

The locking hook 33 is formed to be curved in the shape of a curved hook.

The locking shaft 22 formed on the square lid frame 20 is formed in a column shape having a semicircular cross section,

The curved guide surface 221 formed under the locking shaft 22 is formed to face the lower (bottom surface) of the square lid frame 20 in the drawing, and the locking hook 33 is positioned at the locking shaft 22 ) To be caught and supported by a part of the guide surface 221.

The square manhole cover 30 is formed by inserting the locking hook 33 formed on one side into the locking shaft 22 and then inserting the fixing head 41 into the fitting hole 21 to fix the square manhole cover. 30 is fastened to the square lid frame 20 to be fixed, and when separating, the fixing head 41 is separated from the fitting hole 21 and the locking hook ( 33).

Here, by further attaching and fixing an elastic buffer panel made of a synthetic resin material having elasticity to the guide surface 221 of the locking shaft 22, the locking hook 33 is supported by the elastic buffer panel and the elastic buffer panel It is pressurized by the elasticity of the locking hook 33 and the locking shaft 22 due to external shock or vibration to prevent friction or friction noise from being generated, and to improve the support and fixing power. desirable.

In addition, a coupling groove is further formed at the ends of the locking hooks 33, and a magnetic material is further inserted into the coupling groove to be fixed, so that the square manhole lid 30 is fastened to the square lid frame 20. It is preferable that the magnetic body of the locking hooks 33 is fixed by magnetic force, so that the square manhole covers 30 are connected to each other, so that it is possible to improve the fixing force and prevent each movement by external force.

In addition, by further attaching and fixing an elastic support panel 22d made of synthetic resin having elasticity to the upper surface of the locking shaft 22, the elastic support panel 22d supports the bottom surface of the square manhole cover 30 Thus, it buffers the transmission of an external shock to the locking shaft 22, and prevents the upper portion of the locking shaft 22 and the bottom surface of the square manhole cover 30 from colliding or rubbing by an external shock. It is desirable.

In addition, a pressing groove is formed on the guide surface 221 of the locking shaft 22, and a pressing coil spring 22c is inserted into the pressing groove, and the upper end is welded to the pressing groove, and then the pressing coil spring ( By attaching a protruding elastic pressing panel to the end of 22c) so that the protruding elastic pressing panel protrudes outward from the pressing groove, the locking hook ( It is preferable to prevent friction due to collision by external force by pressing 33) downward to prevent lifting by in close contact with the upper surface of the locking shaft 22 and the lower surface of the square manhole cover 30.

A fastening groove 222 is further formed in the locking shaft 22, and a fastening protrusion 331 is further integrally formed at an end of the locking hook 33 so as to be inserted into the fastening groove on an inner surface.

That is, the locking protrusion 331 of the locking hook 33, which is caught and fixed by the locking shaft 22, is inserted into the locking groove 222, so that the locking shaft 22 is locked while being fixed. The hook 33 is prevented from being moved by an external force, and the locking hook 33 can be placed in close contact with the locking shaft 22.

Here, the fastening protrusion 331 is formed of a synthetic resin material having elasticity, and by bonding and fixing the locking hook 33, the fastening protrusion 331 is forcibly fitted to the fastening groove 222 by elasticity. It is possible to improve the fixing force, and it is desirable to improve the restoring force due to elasticity when moving.

The locking shaft 22 is made of a pair of buffer shafts 22a, and a connection bracket 22b is further screwed and fixed on both sides of the square lid frame 20 so that the ends of the buffer shafts are hinged to rotate. And, the buffer shafts (22a) are interconnected by a pressure coil spring (22c), pressurized by the elasticity of the pressure coil spring (22c), and the locking hook (33) is supported by the buffer shaft (22a). The elastic support panel (22d) is further fastened so as to be.

The buffer shaft 22a is hingedly coupled to the connection bracket 22b so that the pressure coil spring 22c is fixed by welding by connecting the connection brackets 22b.

At this time, the buffer shaft 22a is hinged to the connection bracket so as to rotate in the direction of the fitting groove (horizontal direction), and prevents rotation in the vertical direction as shown in the drawing.

By pressing the locking hook 33 in which the buffer shaft 22a is engaged by the elasticity of the pressure coil spring 22c, the locking hook 33 is prevented from being separated from the buffer shaft 22a, External shock can be absorbed.

In addition, by pressing the locking hook 33 in the fitting groove direction by the pressing coil spring 22c, the square manhole lid 30 is prevented from being moved or separated from the square lid frame 20.

Although the present invention has been described in detail so far, it is clear that the embodiments mentioned in the process are only illustrative and not limiting, and the present invention is the technical spirit or field of the present invention provided by the following claims. Within the range not departing from, it will be said that component changes to the extent that can be coped with equally fall within the scope of the present invention.

10: manhole cover
20: square lid frame
21: fitting hole
22: locking shaft
22a: buffer shaft
22b: Connection bracket
22c: pressurized coil spring
22d: elastic support panel
221: guide surface
222: fastening groove
30: square manhole cover
31: operator
32: operating housing
321: actuator
322: through hole
33: hooking hook
331: fastening protrusion
40: fixing member
41: fixed head
411: coupling hole
42: working rod
50: locking part
51: locking washer
52: fastening bolt
60: elastic coil spring

Claims (5)

A square lid frame with a locking jaw and a pair of fitting holes formed on the inner surface thereof, and a pair of square manhole lids formed on the bottom surface of which operation holes are formed by being inserted into the square lid frame, and an operating housing having an operating tool and a through hole A fixing member comprising a fixing head disposed inside of and having one end inserted into the fitting hole, an operating rod formed in the fixing head and disposed through the through hole, and a locking washer disposed at the end of the operating rod And, one-touch safety of a square manhole consisting of a locking part consisting of a fastening bolt that passes through the locking washer and is fastened to an end of the operating rod, and an elastic coil spring that is inserted into the operating rod and presses the fixing head in the locking direction In the device manhole cover,
The square lid frame further has locking shafts formed on both inner sides,
A pair of locking hooks are further formed on the bottom of the square manhole cover so as to be caught by the locking shaft on one side,
The locking shaft is made of a pair of buffer shafts,
Connection brackets are further formed on both sides of the square lid so that the ends of the buffer shaft are hinged to rotate,
The buffer shafts are interconnected by a pressure coil spring, and are pressed by the elasticity of the pressure coil spring,
Square manhole one-touch safety device manhole cover, characterized in that the elastic support panel is further fastened to the buffer shaft to support the locking hook.
delete The method of claim 1,
The locking shaft formed on the square lid frame is formed in a semicircular column shape,
A square manhole one-touch safety device manhole, characterized in that the curved guide surface formed on the locking shaft is formed to face the lower portion of the square lid frame, and the locking hook is caught and supported by the guide surface of the locking shaft. Lid.
The method of claim 3,
The locking shaft is further formed with a fastening groove,
Square manhole one-touch safety device manhole cover, characterized in that a fastening protrusion is further formed at the end of the locking hook so as to be fitted into the fastening groove on an inner surface.
delete

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