KR102441286B1 - Manhole cover opener - Google Patents

Abstract

The manhole cover opener of the present invention has a plate-shaped body having a predetermined length and forming a central axis, a coupling portion connected to one end of the body, one end is inserted into the opening of the manhole cover, and the other end is hinged with the coupling portion The engaging part, the engaging part disposed so as to be in surface contact with one surface of the body and connected to the coupling part, and the driving part coupled to the other end of the body, connected to face the coupling part and formed on both sides with respect to the central axis include Accordingly, the present invention can easily open the manhole cover from the manhole using the principle of rotation in three directions and the principle of the lever.

Description

Manhole Cover Opener {MANHOLE COVER OPENER}

The present invention relates to a manhole cover opener, and more particularly, to a manhole cover opener capable of easily opening a manhole cover from a manhole by using the principle of three-way rotation and the principle of a lever.

A manhole cover that covers a manhole existing on a road or sidewalk is installed to protect various underground facilities buried underground, such as a city gas pipe or a sump of a water supply pipe, or to maintain a communication cable. . In order to open such a manhole cover, a method is generally adopted in which two workers insert the tip of a metal lever or a hook into the opening of the manhole cover, apply force to lift it, and then pull it out.

In this conventional method, there must be a plurality of workers, or safety accidents due to the operator's negligence or mistake in the process of opening the manhole cover are frequent, and the worker's back injury is caused by the operator bending the waist to open it with force There is a problem with a very high risk of musculoskeletal injuries such as

Republic of Korea Patent No. 10-1865366

The present invention is to solve the above problems, and to provide a manhole cover opener that can easily open a manhole cover from a manhole using the principle of three-way rotation and the principle of a lever.

In addition, it is to provide a manhole cover opener that can open the manhole cover without excessive bending of the back by the operator alone.

In addition, it is to provide a manhole cover opener with improved durability without occurrence of bending of the central axis due to the weight of the manhole cover by having a plate-shaped central axis.

In order to achieve the above object, the manhole cover opener according to an embodiment of the present invention is formed extending in the longitudinal direction, the body forming the central axis of the plate shape; a coupling part connected to one end of the body; a locking part having one end inserted into the opening of the manhole cover, and the other end being hinge-coupled to the coupling part; an engagement part disposed to be in surface contact with one surface of the body and connected to abut the coupling part; and a driving part coupled to the other end of the body, connected to face the coupling part, and provided on both sides with respect to the central axis.

In addition, the body may be provided with a connecting portion that protrudes to one side with respect to the central axis and is connected to the coupling portion, and a departure preventing portion that is bent from the one side and forms an arcuate shape with the connecting portion.

In addition, the coupling part may be formed on the other side with respect to the central axis on the extension line with the connection part, and the coupling part to which the driving part is coupled may be formed.

In addition, the coupling part may be joined to the connection part, and the engagement part may be coupled to the connection part by a coupling means.

In addition, the separation prevention part, the groove is formed to engage the manhole cover so as not to be separated when the manhole cover is lifted, the groove may be in the shape of a V.

In addition, the engaging portion may be formed by abutting a first end having a curved surface and a second end having a straight line.

In addition, the body may include a plurality of holes formed by being perforated on the central axis of the plate shape.

In addition, it may include a handle inserted into any one of the plurality of holes.

The manhole cover opener according to the present invention as described above can easily open the manhole cover from the manhole by using the principle of rotation in three directions and the principle of the lever.

Furthermore, the operator alone can open the manhole cover without excessive bending of the back.

In addition, due to the central axis of the plate shape, the bending of the central axis due to the weight of the manhole cover does not occur, thereby improving durability.

1 is a perspective view showing a manhole cover opener according to an embodiment of the present invention.
2 is an exploded perspective view showing a manhole cover opener according to an embodiment of the present invention.
Figure 3 is a side view showing a state using the manhole cover opener for opening the manhole cover according to an embodiment of the present invention.
Figure 4 is a side view showing the process of opening the manhole cover using the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings in order to clarify the technical spirit of the present invention. In describing the present invention, if it is determined that a detailed description of a related well-known function or component may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. Elements having substantially the same functional configuration in the drawings are given the same reference numbers and reference numerals as much as possible even though they are shown in different drawings. For convenience of explanation, if necessary, the device and method will be described together.

1 is a perspective view showing a manhole cover opener according to an embodiment of the present invention, FIG. 2 is an exploded perspective view showing a manhole cover opener according to an embodiment of the present invention, and FIG. 3 is an embodiment of the present invention It is a side view showing the state of using the manhole cover opener to open the manhole cover.

1, 2 and 3, the manhole cover opener is a device for opening the manhole cover 2 that covers the manhole 4, has a predetermined length in the shape of a plate, and forms the central axis 10, the body A coupling portion 30 connected to one end of (10), one end inserted into the opening 2h of the manhole cover 2, and the other end engaging portion 20 that is hingedly coupled to the coupling portion 30. , the engaging portion 20, the engaging portion 40 disposed so as to be in surface contact with one surface of the body 10 and connected to abut the engaging portion 30, and coupled to the other end of the body 10, the engaging portion It may include a driving unit 50 connected to face 30 and provided on both sides with respect to the central axis.

The body 10 may be formed to extend in the longitudinal direction in the shape of a plate having a rectangular cross-section. The body 10 may have a certain length. At this time, the body 10 may perform the principle of a lever by a certain length. Here, the predetermined length may be implemented as a length in consideration of the height of the operator. The body 10 may be formed as a central axis of the lever principle. The body 10 may be implemented with a metal material having the same strength as iron, and may be subjected to heat treatment. Accordingly, it is possible to increase the surface strength of the body 10 to increase abrasion resistance and durability.

In addition, the body 10 may have a plurality of holes 11 formed by being perforated on the central axis of the plate shape. Here, the plurality of holes 11 may be implemented in sizes having partially different diameters. The plurality of holes 11 may have the same diameter as a certain portion, and may be implemented to become smaller toward a portion connected to the driving unit 50 . According to an embodiment, the diameter of the portion connected to the driving unit 50 may be small, and the diameter of the hole 11 may be increased as the distance from the driving unit 50 is increased. The size of the hole 11 may be implemented to have the same diameter as the maximum handle 13 . Accordingly, while reducing the weight of the body 10, it is possible to improve the convenience of work.

The body 10 may include a handle 13 inserted into any one of the plurality of holes 11 . The handle 13 may be inserted into the hole 11 formed in the body 10 corresponding to a position suitable for the height of the operator. On the other hand, the handle 13 can easily open the manhole cover even with less force as the distance from the driving unit 50 serving as a support when applying force is applied according to the principle of the lever.

On the other hand, the body 10 includes a connecting portion 14 protruding to one side with respect to a central axis extending in the longitudinal direction and a departure preventing portion 15 formed in an arcuate shape with the connecting portion 14 and curved from one side. can do. Here, the separation preventing part 15 may be formed with a groove engaged with the manhole cover 2 so that the manhole cover 2 does not come off when the manhole cover 2 is lifted. Here, the groove may be in the shape of a V, and may be engaged with the lower end or corner of the manhole cover (2).

The body 10 may have a coupling hole 11h formed on the other side with respect to the central axis on the extension line with the connection part 14, and to which the driving part 50 is coupled.

The coupling part 30 and the engaging part 40 may be connected to the connection part 14 . Accordingly, the connection part 14 may be joined to the coupling part 30 , and the engagement part 40 may be coupled by a coupling means (not shown). Here, the connection part 14 and the coupling part 30 may be joined by welding or the like.

The hooking part 20 may be designed and implemented with a thickness, a length and an angle that can cover the load of the manhole cover 2 in a ring shape. When viewed from the side, one end of the locking part 20 is protruded in the shape of a sector to form a ring, and can be inserted into the opening 2h of the manhole cover 2 . The other end of the engaging portion 20 is provided with a groove (h) for connecting with the engaging portion (30), is closely disposed with the groove (h) of the engaging portion (30) is hinged by the connecting rod (25) can be combined. Accordingly, the locking portion 20 may rotate while the central axis of the body 10 moves.

The engaging portion 40 may be arranged to face-to-face with the connecting portion 14 . Accordingly, the engaging part 40 may be coupled by a coupling means (not shown) by forming a coupling groove at the same position as the coupling part 14 . The engaging portion 40 may be formed by contacting a first end 41a having a curved cross-section and a second end 41b having a straight line. The engaging portion 40 may be formed in a pair on both sides of the connecting portion 14 as a center. Accordingly, the engaging portion 40 may physically support the manhole cover 2 with the first end 41a of the curved surface mutually with the separation preventing portion 15 . Accordingly, the manhole cover opener can prevent the separation of the manhole cover and can cover the manhole cover of various thicknesses, thereby improving compatibility.

The driving unit 50 may be coupled to the coupling hole 11h of the body 10 by a coupling rod 51 . The driving unit 50 may be implemented in a wheel shape, and is coupled to enable rolling motion. The driving unit 50 may serve as a support for the lever while the central axis of the body 10 moves. The driving unit 50 may be implemented to rotate on the opposite side to the engaging unit 20 based on the body 10 . Accordingly, the manhole cover opener can easily open the manhole cover 2 based on the principle of rotation in three directions and the principle of lever. Furthermore, the manhole cover opener can conveniently move the opened manhole cover 2 .

Figure 4 is a side view showing the process of opening the manhole cover using the present invention.

1 and 4, step (a) inserts the locking part 20 of the manhole cover opener into the opening 2h of the manhole cover 2 . At this time, the separation prevention part 15 may be engaged with the edge of the manhole cover (2).

In step (b), when a force is applied to the handle 13 in the direction of the manhole cover 2 by the operator, the driving unit 50 serves as a support while the body 10 moves, and the manhole by the engaging part 20 The cover (2) is lifted up. That is, the handle 13 becomes the force point, the locking part 20 becomes the action point, and the driving part 50 becomes the fulcrum point. Accordingly, the manhole cover 2 is easily opened by the rotation 10a of the central axis, the rotation 20a of the locking part, and the rotation 2a of the manhole cover 2 .

Referring to step (c), the manhole cover 2 is supported by the correlation between the engagement part 40 and the separation prevention part 15 of the manhole cover opener and can be easily opened. That is, by applying more force to the handle 13 in the direction of the manhole cover 2 to move the body 10 , the manhole cover 2 can be completely lifted. Then, referring to step (d), it is possible to easily move the heavy manhole cover 2 using the driving unit 50 .

On the contrary, when explaining the process of closing the manhole cover 2, the manhole cover 2 in a state engaged with the engaging portion 20, the engaging portion 40, and the separation preventing portion 15 is leveled with the ground. It moves closer to the manhole 4 by the driving unit 50 .

Thereafter, the handle 13 is lifted from the entrance of the manhole 4 and one side of the manhole cover 2 is lowered to fit the manhole 4 .

Then, by completely lifting the handle 13 and moving the body 10 so as to be perpendicular to the manhole cover 2, the manhole cover 2 is seated on the manhole 40, and the locking part 20 is attached to the manhole cover (2). Remove from the opening (2h) of the.

Thereby, the manhole cover opener can easily open the manhole cover from the manhole using the principle of three-way rotation and the principle of a lever. Furthermore, the operator alone can open the manhole cover without excessive bending of the back.

In addition, due to the central axis of the plate shape, the bending of the central axis due to the weight of the manhole cover does not occur, thereby improving durability.

So far, the present invention has been described in detail with reference to the preferred embodiments shown in the drawings. These embodiments are not intended to limit the present invention, but are merely illustrative, and should be considered in an illustrative rather than a restrictive sense. The true technical protection scope of the present invention should be determined by the technical spirit of the appended claims rather than the above description. Although specific terms are used in this specification, they are only used for the purpose of describing the concept of the present invention and are not used to limit the meaning or scope of the present invention described in the claims. Each step of the present invention does not necessarily have to be performed in the order described, and may be performed in parallel, selectively, or individually. Those of ordinary skill in the art to which the present invention pertains will understand that various modifications and equivalent other embodiments are possible without departing from the essential technical spirit of the present invention as claimed in the claims. It is to be understood that equivalents include both currently known equivalents as well as equivalents developed in the future, ie, all elements invented to perform the same function, regardless of structure.

10: body 20: locking part
30: coupling part 40: engaging part
50: drive unit

Claims (8)

a body having a predetermined length in the shape of a plate and forming a central axis;
a coupling part connected to one end of the body;
a locking part having one end inserted into the opening of the manhole cover, and the other end being hinge-coupled to the coupling part;
an engagement part disposed to be in surface contact with one surface of the body and connected to abut the coupling part; and,
Doedoe coupled to the other end of the body, the driving part is connected to face the coupling part is formed on both sides with respect to the central axis; includes;
In the body,
a connection part protruding to one side with respect to the central axis and connected to the coupling part;
A manhole cover opener formed by bending from the one side, characterized in that a separation preventing part forming an arc shape with the connection part is formed. delete The method of claim 1,
Manhole cover opener, characterized in that formed on the other side with respect to the central axis on the extension line with the connection part, a coupling hole to which the driving part is coupled is formed. The method of claim 1,
The coupling part is joined to the connection part,
The engaging portion, a manhole cover opener, characterized in that coupled to the connecting portion and the coupling means. The method of claim 1,
The escape prevention unit,
A manhole cover opener, characterized in that when the manhole cover is lifted, engaging grooves are formed so as not to be separated from the manhole cover, wherein the grooves are V-shaped. a body having a predetermined length in the shape of a plate and forming a central axis;
a coupling part connected to one end of the body;
a locking part having one end inserted into the opening of the manhole cover, and the other end being hinge-coupled to the coupling part;
an engagement part disposed to be in surface contact with one surface of the body and connected to abut the coupling part; and,
Doedoe coupled to the other end of the body, the driving part is connected to face the coupling part is formed on both sides with respect to the central axis; includes;
The engagement part,
A manhole cover opener, characterized in that a first end made of a curved surface and a second end made of a straight line contact each other. According to claim 1,
The body is
A manhole cover opener comprising a plurality of holes formed by being perforated on the central axis of the plate shape. 8. The method of claim 7,
A manhole cover opener comprising a handle inserted into any one of the plurality of holes.

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