KR102460207B1 - Grating remover - Google Patents

Abstract

An objective of the present invention is to provide a grating removal device that can remove various types of gratings with a simple structure and can be used adaptively according to working conditions around the grating. According to the present invention, the grating removal device comprises: a handle part (10) extending in a vertical direction; a lever adjusting part (20) bent and extended in a horizontal direction from a lower end of the handle part (10), and having coupling holes (21 or 22) formed along the extending direction; a hook arm (30) extending downward from a front end of the lever adjusting unit (20) and including a hook (31) at the front end; and a lever support part (40) coupled to the coupling hole (21) of the lever adjusting part (20) so as to be able to change in position along the extending direction of the lever adjusting part (20).

Description

GRATING REMOVER {GRATING REMOVER}

The present invention relates to a grating demolition apparatus, and more particularly, to a grating demolition apparatus that can be adaptively used according to various types of gratings and working conditions.

In general, a grating refers to a cover installed on a drainage or exhaust system, especially when the drainage or exhaust system is installed in a place where vehicles or people can pass or come close to, in order to secure the safety of vehicles or people along with drainage or exhaust capability. is installed

A metal material such as steel is mainly used as the material of the grating, but a hard material such as plastic may be used.

The size of the grating varies from a small grating installed in a rainwater pipe on the roadside to a large grating installed in a subway vent.

The shape of the grating is generally a rectangular grid having crossbars orthogonal to each other, but various types of gratings are being manufactured for functional or aesthetic purposes. 1A to 1F show examples of various types of gratings. As shown, it can be seen that the shape of the gap (through hole) into which the hook (hook) is fitted when the grating is removed is very diverse.

The installation location of the grating is also not uniform. In general, the grating is installed at a height similar to the ground surface, such as a surrounding concrete structure or road, but there are cases where it is installed on a stepped structure higher or lower than the surrounding ground surface. Also, as shown in FIG. 1F , there is a case where a flower bed or a garden is created adjacent to the grating, so that the surrounding space is narrow.

The grating may need to be dismantled for maintenance of drainage/exhaust facilities or for repair or replacement of the grating. Conventionally, a method of directly lifting the grating by the operator has been mainly used, but in recent years, various grating removal devices have been proposed.

For example, Korean Utility Model Publication No. 2014-003129 “Grating Removal Mechanism” (hereinafter referred to as “Prior Art 1”), Japanese Patent Laid-Open No. 2010-037737 “Grating Removable Device” (hereinafter referred to as “Prior Art 2”) , Korea Utility Model Registration No. 20-0481637 “Grating Switchgear” (hereinafter referred to as 'Prior Art 3').

Prior art 1 has the advantage of a simple structure, but has a disadvantage in that it requires a lot of power from the operator because it does not use the lever principle.

Prior art 2 has the advantage of being able to reduce the operator's force by using the lever principle and stably grip and lift it after removing the grating, but the shape of the hook, the position of the hook arm, and the position of the wheel serving as a lever support Since the backs are all fixed, it is difficult to apply to various types of gratings, and there are disadvantages in that it is difficult to apply when the grating is installed on a high step or when the space around the grating is narrow. In addition, there is a disadvantage in that the structure is complicated because the wheel is used as a lever support.

Prior art 3 has the advantage of being able to reduce the operator's force by using the lever principle and lifting various types of gratings using the chain-type fine hook, As a result, there is the inconvenience of having to walk in the gap of the grating, and like the prior art 2, there is a disadvantage that it is difficult to apply when the grating is installed on a high step or when the space around the grating is narrow. In addition, there is a disadvantage in that the structure is complicated because the wheel is used as a lever support.

On the other hand, if the soil is stuck in the periphery of the grating or is frozen in winter, it is necessary to crush the soil or ice before dismantling the grating. have.

In addition, if the structure or ground around the grating is damaged or collapsed, it may be difficult to escape because the grating is caught in the damaged or collapsed structure or ground, and it may be difficult to secure an appropriate space to support the lever support near the grating. . In this case, the above-mentioned prior arts 2 and 3 are not suitable for taking out the grating, and the distance from the wheel serving as a lever support to the hook (hook), that is, the span is fixed, so it is difficult to perform the grating removal work. .

The present invention provides a grating dismantling device that can be used to remove various types of gratings with a simple structure and can be used adaptively according to the working conditions around the grating, as a task of compensating for the disadvantages of the prior art described above. will do

In order to achieve the above object, according to the present invention, the shaft portion 10 extending in the vertical direction; a lever adjusting part 20 bent and extending in a horizontal direction from the lower end of the shaft part 10 and having coupling holes 21 or 22 formed along the extension direction; a hook arm 30 extending downward from the tip of the lever adjustment unit 20 and including a hook 31 at the tip; and a lever support part 40 coupled to the coupling hole 21 of the lever adjustment part 20 so as to be changeable in position along the extension direction of the lever adjustment part 20; provided with a grating removal device comprising: do.

The coupling hole 21 of the lever adjustment unit 20 may be a plurality of screw holes disposed along the extension direction of the lever adjustment unit 20 , and the lever support unit 40 is selectively screwed with the plurality of screw holes. can be

Optionally, the coupling hole 22 of the lever adjustment part 20 may be a single long hole formed along the extension direction of the lever adjustment part 20, and the lever support part 40 can slide along the long hole. can be combined.

The lever adjustment unit 20 may be coupled to be able to move up and down relative to the lever support unit 40 in the vertical direction.

The hook arm 30 may be detachably and angle-adjustably coupled to the tip of the lever adjustment unit 20 .

The hook arm 30 includes a plurality of hook arms having different at least one of a shape of the hook 31 , a thickness of the hook 31 , a length of the hook arm 30 , and a cross-sectional shape of the hook arm 30 . It may be provided as a selectively replaceably coupled to the lever adjustment unit (20).

The hook arm 30 includes an upper hook arm 34 coupled to the tip of the lever adjustment unit 20, a length-adjustably coupled to the lower end of the upper hook arm 34, and the hook 31 at the tip. may include a lower hook arm 35 formed thereon.

At least one of the upper end of the handle 10 and the lower end of the hook arm 30 may be formed with flat and sharp crushing portions 12 and 38 .

The coupling holes 21 may be arranged side by side in three rows in the extending direction of the lever adjustment unit 20 , and the lever support units 40 may be respectively coupled to the three rows, and a single lever coupled to the central row. The support portion 40 and the two lever support portions 40 coupled to the edge row may form a three-point support.

According to the present invention, it is possible to remove various types of gratings with a simple structure, and it is possible to provide a grating removal device that can be used adaptively according to the working conditions around the grating.

1A to 1F are photographs illustrating various types of gratings.
Figure 2 is a schematic perspective view of the grating removal device according to the first embodiment of the present invention.
Figure 3 is a schematic cross-sectional view of the grating removal device of Figure 2;
Figure 4 is a view for explaining a state in which the grating removal device of Figure 2 is used when demolishing the grating installed on the step higher than the ground surface.
Figure 5 is a partial schematic perspective view of the grating removal device according to the second embodiment of the present invention.
Figure 6 is a schematic cross-sectional view of the grating removal device of Figure 5.
7 is a partial schematic perspective view of a grating removal device according to a third embodiment of the present invention.
8 is a view showing a hook arm used in the grating removal device according to the fourth embodiment of the present invention.
9 is a view showing a hook arm used in the grating removal device according to the fifth embodiment of the present invention.
10 is a view showing a hook arm used in the grating removal device according to the sixth embodiment of the present invention.
11 is a partial schematic plan view of a grating removal device according to a seventh embodiment of the present invention.

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

Figure 2 is a schematic perspective view of the grating removal device according to the first embodiment of the present invention, Figure 3 is a schematic cross-sectional view of the grating removal device of Figure 2.

2 and 3 , the grating removal device according to the first embodiment of the present invention includes a shaft portion 10 , a lever adjustment portion 20 , a hook arm 30 , and a lever support portion 40 . ) is included.

The handle 10 extends in the vertical direction. Here, "up and down direction" does not necessarily refer to only a strictly vertical direction, and includes a case where the vertical direction is inclined at a certain angle to the extent that there is no inconvenience in operation.

A handle 11 is formed on the upper end of the handle 10 . Although the example in which the handle 11 is formed by slightly bending the upper end of the handle 10 is shown in this embodiment, the present invention is not limited thereto, and various types of handles are possible.

An upper crushing part 12 having a flat and sharp tip may be formed at the tip of the handle 11 . Here, “flat-pointed” is a concept that includes both “flat and pointed cases” and “flat or pointed cases.” With this configuration, when the grating does not easily come out of the installation site due to hardened soil or ice, it is easy to turn the dismantling device over and crush the soil or ice using the upper crushing part 12 to make the grating come out easily. can do. In addition, even when the surrounding structures or ground are damaged or collapsed and the grating is difficult to escape, the grating can be easily released by striking the structure or the ground using the upper crushing part 12 .

The bag 10 may be formed of a lightweight material in order to reduce the weight of the present grating removal device, and may have a hollow structure when formed of steel.

The lever adjustment part 20 is bent and extended in the horizontal direction from the lower end of the shaft part 10 . Here, “horizontal direction” is not necessarily horizontal in a strict sense, but a concept that includes a range of inclinations to the extent that there is no inconvenience in operation. The lever adjustment unit 20 may be formed integrally with the handle unit 10 or may be separately manufactured and combined.

A coupling hole 21 is formed through the lever adjustment unit 20 in the vertical direction. In the present embodiment, a plurality of coupling holes 21 are arranged along the extension direction of the lever adjustment unit 20 . Accordingly, as will be described later, the position of the lever support unit 40 can be moved along the extension direction of the lever adjustment unit 20 . In this embodiment, although the case where the number of coupling holes 21 is three is illustrated, the number of coupling holes 21 is not limited thereto, and may be appropriately increased or decreased according to design or operational needs. In addition, in the present embodiment, the coupling hole 21 is exemplified as a screw hole, but is not necessarily limited thereto, and may be formed as a screwless through hole.

The hook arm 30 extends downward from the tip of the lever adjustment unit 20 . Here, "downward" does not necessarily refer to a vertical downward direction, and includes a case where a certain angle is inclined with respect to the vertical downward direction.

A hook 31 is formed at the tip of the hook arm 30 . The hook 31 is inserted into the gap of the grating and configured to hang the grating. As will be described later, the hook 31 may have various shapes to be suitable for various gratings having various gaps. 4 illustrates a state in which the hook 31 is caught on the grid-type grating S as an example of the grating.

The lever support part 40 is coupled to the coupling hole 21 of the lever adjustment part 20 to serve as a lever support. The lever adjustment unit 20 may be selectively coupled to one of the plurality of coupling holes 21 to move its position in the extending direction of the lever adjustment unit 20 . Accordingly, the distance between the lever support part 40 and the hook 31, that is, the span, can be adjusted, thereby adaptively performing grating removal work according to various types of gratings and working conditions around the gratings.

The lever support part 40 includes a coupling rod 41 extending up and down, a head 42 attached to the upper end of the coupling rod 41, and a floor support detachably attached to the lower end of the coupling rod 41 ( 43) are included.

When the coupling hole 21 is a screw hole, the coupling rod 41 is formed of a screw rod. With this configuration, as the coupling rod 41 rotates, the distance between the ground surface G supporting the lever support unit 40 and the lever adjustment unit 20, that is, the vertical height of the lever adjustment unit 20 can be adjusted. have. That is, the coupling hole 21 and the coupling rod 41 are screwed so that the lever adjustment unit 20 can be moved up and down relative to the lever support unit 40 in the vertical direction. When the coupling hole 21 is a through hole rather than a screw hole, the coupling rod 41 and the bottom support 43 may have the same configuration as in the embodiments of FIGS. 5 and 6 to be described later.

When the grating is removed using the grating removal device according to the present embodiment, as shown in FIG. 3 , the hook 31 is hung on the grating S, and the handle 10 is moved downward using the lever principle, That is, by pressing to the right in FIG. 3, the demolition operation is performed.

4 is a view for explaining a state in which the grating removal device according to the present embodiment is used when removing the grating installed on the step higher than the ground surface. In this case, as shown by the solid line in FIG. 4, the distance between the lever support part 40 and the hook 31, that is, the span, is reduced by placing the lever support part 40 on the step. Also, as shown by the dotted line in FIG. 4, the demolition operation may be performed by widening the span and adjusting the vertical height. Of course, the span can be adjusted in consideration of the weight of the grating.

Figure 5 is a partial schematic perspective view of a grating removal device according to a second embodiment of the present invention, Figure 6 is a schematic cross-sectional view of the grating removal device of Figure 5.

This embodiment is different from the first embodiment described above in that the coupling hole 22 is formed as a single long hole, and the coupling rod 41 is screwed with the floor support 43-1 to move in the vertical direction. that there is, and that the two nuts 44 are fastened to the coupling rod 41 with the lever adjustment unit 20 interposed therebetween. According to this configuration, the span can be adjusted by sliding the lever support part 40 along the long hole 22, and as the coupling rod 41 rotates, the lever adjustment part for the ground surface on which the lever support part 40 is placed. The height of (20) can be adjusted. The dotted line in FIG. 6 shows an example of such sliding movement and height adjustment. Although the figure shows an example in which the male screw is formed over the entire coupling rod 41, of course, it may be appropriately changed so that the male screw is formed only in the lower region screwed with the floor support 43-1.

7 is a partial schematic perspective view of a grating removal device according to a third embodiment of the present invention.

The present embodiment is different from the above-described first and second embodiments in that the hook arm 30 is detachably and angle-adjustably coupled to the tip of the lever adjustment unit 20 . As shown in FIG. 7 , the hook arm 30 is fixed by the fixing bolt 50 after the angle is adjusted by rotating in the receiving groove 23 formed at the tip of the lever adjustment unit 20 . Although not shown in the drawings, a female screw coupled to the fixing bolt 50 is formed at the upper end of the hook arm 30 . In this embodiment, an example in which the fixing bolt 50 is used for adjusting the angle of the hook arm 30 has been described, but other methods known in other technical fields may be used.

The dotted line in FIG. 7 illustrates the fixed state after the hook arm 30 is angled forward and backward. Of course you can. In particular, when the hook arm 30 rotates at a right angle with respect to the lever adjustment unit 20 and is disposed perpendicular to the ground surface, it may be effective when the outer part of the grating is engaged with the surrounding structure and it is difficult to remove it in an oblique posture. Here, “perpendicular” and “vertical” are not mathematically rigorous concepts, but are concepts that include a generally acceptable error range for work.

8 is a view showing a hook arm used in the grating removal device according to the fourth embodiment of the present invention.

This embodiment shows the hook arm 30-1 that can be replaced with the hook arm 30 detachably coupled to the lever adjustment part 20 in the third embodiment (FIG. 7) described above. Since the hook arm 30-1 shown in FIG. 8 is thinner and the thickness of the hook 31-1 is thinner than the hook arm 30 shown in FIG. 7, the gap between the gratings is narrow. can be usefully used for The embodiment of FIG. 8 is only one example of a variety of replaceable hook arms, and hook arms in which at least one of a shape of a hook, a thickness of a hook, a length of a hook arm, and a cross-sectional shape of a hook arm is deformed may be used interchangeably.

9 is a view showing a hook arm used in the grating removal device according to the fifth embodiment of the present invention.

The difference between this embodiment and the above-described embodiments is that the hook arm 30 is coupled to the upper hook arm 34 to be coupled to the tip of the lever adjustment unit 20, and to the lower end of the upper hook arm 34 so that the length can be adjusted. and that it is configured to include a lower hook arm 35 having a hook 31 formed at its tip. In FIG. 9 , reference numeral 36 denotes a long hole formed in the upper hook arm 34 , and reference numeral 37 denotes a fixing bolt for fixing the position of the lower hook arm 35 with respect to the upper hook arm 34 . According to this configuration, the length of the hook arm 30 can be freely adjusted according to various variables such as the length of the span, the height of the lever adjustment unit 20 , and the angle between the hook arm 30 and the lever adjustment unit 20 .

10 is a view showing a hook arm used in the grating removal device according to the sixth embodiment of the present invention.

This embodiment is different from the above-described embodiments in that it has a configuration that has the same function as the upper crushing part 12 formed at the tip of the bag 10 in the first embodiment, that is, the lower crushing part 38 with a flat tip. The point is that it is formed to protrude downward adjacent to the hook (13). Both the upper crushing part 12 and the lower crushing part 38 may be formed, or either one of them may be formed.

11 is a partial schematic plan view of a grating removal device according to a seventh embodiment of the present invention.

The present embodiment is different from the above-described embodiments in that the coupling holes 22 are arranged in three rows in the extending direction of the lever adjustment unit 20 . In particular, as shown in FIG. 10, when one lever support part 40 coupled to the center row and two lever support parts 40 coupled to the edge row form a three-point support, it can stably serve as a lever support. There is an advantage that Although the drawing shows an example arranged in three rows, it may be arranged in two rows if necessary, and even in this case, the lever support can be stably supported compared to the case of being arranged in one row.

Although the present invention has been described in detail through the embodiments and the accompanying drawings, the technical spirit of the present invention should be defined by the matters described in the claims, and within the scope not departing from the scope of the technical spirit of the present invention. There may be various modifications and equivalents.

Although reference numerals are given to the components described in the claims, these are only for convenience of understanding and are not intended to limit the scope of the present invention.

10: handle
11: handle
12: upper crushing part
20: Leverage
21, 22: coupling hole
23: accommodation home
30, 30-1: hook arm
31, 31-1: hook
34: upper hook arm
35: lower hook arm
36: long hole
37: fixing bolt
38: lower crushing unit
40: lever support part
41: coupling rod
42: head
43, 43-1: floor support
44: nut
45: female thread
50: fixing bolt
G: surface
S: grating

Claims (9)

a shaft portion 10 extending in the vertical direction;
a lever adjusting part 20 bent and extending in a horizontal direction from the lower end of the shaft part 10 and having coupling holes 21 or 22 formed along the extension direction;
a hook arm 30 extending downward from the tip of the lever adjustment unit 20 and including a hook 31 at the tip; and
and a lever support part 40 coupled to the coupling hole 21 of the lever adjustment part 20 to be changeable in position along the extension direction of the lever adjustment part 20;
The coupling holes 21 are arranged side by side in three rows in the extending direction of the lever adjustment unit 20,
The lever support part 40 is respectively coupled to the three rows, and one lever support part 40 coupled to the central row and two lever support parts 40 coupled to the edge row form a three-point support. grating removal device. According to claim 1,
The coupling hole 21 of the lever adjustment unit 20 is a plurality of screw holes disposed along the extension direction of the lever adjustment unit 20, and the lever receiving portion 40 is selectively screwed with the plurality of screw holes. Grating removal device, characterized in that. According to claim 1,
The coupling hole 22 of the lever adjustment part 20 is a single long hole formed along the extension direction of the lever adjustment part 20, and the lever support part 40 is slidably coupled along the long hole. A grating removal device with According to claim 1,
The grating dismantling device, characterized in that the lever adjustment unit (20) is coupled to be able to move up and down relatively in the vertical direction with respect to the lever support unit (40). According to claim 1,
The hook arm (30) is a grating dismantling device, characterized in that it is coupled to the front end of the lever adjustment unit (20) to be detachably and angle-adjustable. 6. The method of claim 5,
The hook arm 30 includes a plurality of hook arms having different at least one of a shape of the hook 31 , a thickness of the hook 31 , a length of the hook arm 30 , and a cross-sectional shape of the hook arm 30 . A grating removal device, characterized in that provided as a selectively replaceably coupled to the lever adjustment unit (20). 6. The method of claim 5,
The hook arm 30 includes an upper hook arm 34 coupled to the tip of the lever adjustment unit 20, a length-adjustably coupled to the lower end of the upper hook arm 34, and the hook 31 at the tip. Grating removal device, characterized in that it comprises a lower hook arm (35) is formed. According to claim 1,
A grating removal device, characterized in that at least one of the upper end of the shaft portion (10) and the lower end of the hook arm (30) is formed with flat and sharp crushing portions (12, 38). delete

Images