KR101575110B1

KR101575110B1 - Manhole cover opening apparatus

Info

Publication number: KR101575110B1
Application number: KR1020150071410A
Authority: KR
Inventors: 이승철
Original assignee: (주)지산종합기술
Priority date: 2015-05-22
Filing date: 2015-05-22
Publication date: 2015-12-07

Abstract

The present invention relates to a manhole cover, comprising: a first unit having a plurality of hook pieces which are engaged with an edge of a manhole cover; A screw rods extending from above the central portion of said first unit; A second unit supporting a peripheral surface of the manhole cover at a lower side and penetrating the screw rod at a central portion of an upper side; And a driving force which is disposed at an upper portion of the second unit and operates separately from the first unit, and which lifts the manhole cover fastened to the first unit together with the first unit while rotating the screw rod in one direction, And a third unit for transferring the manhole cover to the screw rod. The present invention relates to a manhole cover opening device for efficiently and quickly separating and opening a manhole cover fixed for a long time with a relatively simple structure from a manhole entrance.

Description

{MANHOLE COVER OPENING APPARATUS}

The present invention relates to a manhole lid opening device, and more particularly, to a manhole cover opening device that enables a manhole lid fixed for a long time with a relatively simple structure to be separated and opened efficiently and quickly from a manhole entrance.

In general, structures buried in the ground such as telecommunication cables, storm water pipes, sewer pipes and sewer pipes are accessed through manholes for the purpose of periodic inspection. In the entrance of these manholes, the manhole covers of heavy metal materials are covered.

When such a manhole cover is exposed on the road surface, the boundary between the manhole cover edge and the ground around the edge of the manhole cover becomes blurred due to the movement of the vehicle for a long time, so that the manhole cover tends to stick to the ground.

(Hereinafter referred to as "prior art 1") of Patent No. 10-0289693, which is disclosed in Japanese Patent Application Laid-Open No. 10-2289693, which is designed to separate and open a manhole cover, 10-0362533 entitled "Manhole Cap Opening Device" (hereinafter referred to as " Prior Art 2 ").

However, all of the prior art techniques are to open the manhole cover by lifting one side edge of the manhole cover by using the force of the person, that is, by using the principle of the lever, or by rotating the manhole cover against the manhole entrance, It is very difficult not only to open and separate it by the force of the worker but also to cause injury such as musculoskeletal diseases of the workers during work.

Therefore, it is urgent to develop a device that can easily separate and open a manhole cover secured from a manhole entrance with a relatively simple structure for a long time.

Patent No. 10-0289693 Patent No. 10-0362533

SUMMARY OF THE INVENTION It is an object of the present invention to provide a manhole cover opening device which is capable of separating and opening a manhole cover fastened for a long time efficiently and quickly from a manhole entrance with a relatively simple structure.

In order to accomplish the above object, the present invention provides a sewing machine comprising: a first unit having a plurality of hook pieces which are engaged with an edge of a manhole cover; A screw rods extending from above the central portion of said first unit; A second unit supporting a peripheral surface of the manhole cover at a lower side and penetrating the screw rod at a central portion of an upper side; And a driving force which is disposed at an upper portion of the second unit and operates separately from the first unit, and which lifts the manhole cover fastened to the first unit together with the first unit while rotating the screw rod in one direction, And a third unit for transferring the manhole cover to the screw rod.

The first unit includes a lifting body formed on an upper surface of the screw rod, and a clamping arm extending from an outer surface of the lifting body and disposed in a straight line and parallel to the manhole cover. And is formed at an end of each of the arms.

The second unit may include a support having a threaded portion penetrating the center portion and having an internal thread formed on the inner circumferential surface of the threaded rod to engage with a male thread formed along the outer circumferential surface of the threaded rod, And a caster assembly formed at an end of each of the plurality of support arms and in rolling contact with the peripheral ground surface, wherein the third unit is disposed on an upper portion of the support member .

The third unit includes an elevating guide piece disposed on the upper side of the second unit and capable of forward and reverse rotations with respect to the stopped second unit and passing through the screw rod through the screw rod, And a drive transmitting portion that is engaged with the guide piece and transmits the driving force to the forward and backward rotation of the elevation guide member manually or automatically from the outside.

The drive transmission unit may include a worm shaft having a gear formed along an outer circumferential surface of the elevation guide member, a worm shaft having a worm engaged with the worm wheel, and a worm shaft provided at an end of the worm shaft, Or a carrier for automatic transmission.

According to the present invention having the above-described configuration, the following effects can be achieved.

A first unit for latching a manhole cover edge, a screw rod extending above the center of the first unit, a second unit for supporting the periphery of the manhole cover through the center of the screw rod, And a third unit arranged at an upper portion of the unit and transmitting a driving force required for the elevation of the first unit in accordance with the rotation of the screw rod, the manhole cover fastened over a long period of time can be separated and opened efficiently and quickly from the manhole entrance .

Further, in the structure of the first unit, the clamping arm extends from the outer surface of the lifting main body to both sides in a straight line, and the hook piece is provided at the end of each of the clamping arms, thereby assisting in stable separation and opening of the manhole cover .

According to a second aspect of the present invention, there is provided a second unit comprising: a support member passing through a center portion of a screw rod; a plurality of support arms radially extending from an outer surface of the support member; and a caster assembly provided at an end of each support member , It becomes possible to disperse and support the applied pressure in separating and opening the manhole cover.

Further, the present invention is characterized in that, in the configuration of the third unit, since the elevating guide piece is screwed through the screw rod and the driving force transmitting portion is engaged with the elevating guide piece to transmit the driving force to the elevating guide piece, The manhole cover can be separated and opened efficiently by minimizing the power of the person without the need to separate and open the manhole cover hardly.

Further, the present invention is characterized in that, in the structure of the drive transmission portion, the worm shaft including the worm wheel formed on the outer circumferential surface of the elevation guide member, the worm engaged with the worm wheel, and the delivery member provided on the end portion of the worm shaft, By adopting the driving force transmitting structure by the worm gear engagement, the installation space of the drive transmitting portion is greatly reduced, and the whole apparatus can be made compact.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side elevational view showing a general configuration of a manhole cover opening device according to an embodiment of the present invention; FIG.
FIG. 2 is a view of the worm shaft of the drive transmission unit among the third units, which is a main part of the present invention, and the support arm of the second unit, which is a main part of the present invention,
FIG. 3 is a plan view showing a general configuration of a manhole cover opening device according to an embodiment of the present invention,
FIGS. 4 to 7 are conceptual diagrams sequentially illustrating separation and opening of a manhole cover from the ground using a manhole cover opening device according to an embodiment of the present invention. FIG.
8 is a partial side elevational view showing a structure in which a hook piece can be attached to and detached from a clamp arm of a first unit which is a main part of a manhole cover opening device according to another embodiment of the present invention

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and how to accomplish them, will become apparent by reference to the embodiments described in detail below with reference to the accompanying drawings.

However, the present invention is not limited to the embodiments described below, but may be embodied in various other forms.

The present embodiments are provided so that the disclosure of the present invention is thoroughly disclosed and that those skilled in the art will fully understand the scope of the present invention.

And the present invention is only defined by the scope of the claims.

Thus, in some embodiments, well known components, well known operations, and well-known techniques are not specifically described to avoid an undesirable interpretation of the present invention.

In addition, throughout the specification, like reference numerals refer to like elements, and the terms (mentioned) used herein are intended to illustrate the embodiments and not to limit the invention.

In this specification, the singular forms include plural forms unless the context clearly dictates otherwise, and the constituents and acts referred to as " comprising (or having) " do not exclude the presence or addition of one or more other constituents and actions .

Unless defined otherwise, all terms (including technical and scientific terms) used herein may be used in a sense commonly understood by one of ordinary skill in the art to which this invention belongs.

Also, commonly used predefined terms are not ideally or excessively interpreted unless they are defined.

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

1 is a side elevational view showing a general configuration of a manhole cover opening device according to an embodiment of the present invention.

FIG. 2 is a view of the worm shaft of the drive transmission unit among the third units, which is a main part of the present invention, and the support arm of the second unit, which is a main part of the present invention, FIG.

FIG. 3 is a plan view showing the overall structure of the manhole cover opening device according to the embodiment of the present invention, as viewed from the viewpoint of FIG.

The present invention can be understood as a structure including the first, second and third units 100, 200 and 300 and the screw rod 500 as shown in FIG.

The first unit 100 includes a plurality of hook pieces 130 which are engaged with the edges of the manhole cover 400. When the manhole cover 400 is separated and opened, .

The screw rod 500 extends from the upper side of the center of the first unit 100.

The lower portion of the second unit 200 supports the peripheral surface 600 of the manhole cover 400 and the screw rod 500 penetrates the central portion of the upper portion.

The third unit 300 is disposed on the upper portion of the second unit 200 and operates independently from the first unit 100. The third unit 300 includes a first unit 100, To transmit the driving force for raising the fixed manhole cover (400) together with the first unit (100) to the screw rod (500).

Accordingly, the present invention can efficiently and quickly separate and open the manhole cover 400 secured to the peripheral ground 600 over a long period of time by the relatively simple structure as described above.

It is needless to say that the present invention can be applied to the embodiment having the above-described configuration, and the following various embodiments can be applied.

The first unit 100 includes a lifting body 110 having a screw rod 500 formed on an upper surface thereof and a second lifting body 110 extending from the outer surface of the lifting body 110 to be parallel to the manhole cover 400 An embodiment of the structure including the clamping arm 120 may be applied.

Since the hook piece 130 is formed at the end of each of the clamping arms 120, the load of the manhole cover 400, which is a heavy article, is dispersedly supported and fixed, .

At this time, the lifting body 110 is rotatably divided and coupled to the lower end of the screw rod 500, and the clamping arm 120 is disposed at each of the divided and mutually coupled portions (see FIG. 5) .

More specifically, the structure including the pivot 113, the first and second main body division parts 111 and 112, and the clamp 114 can be understood.

The pivot shaft 113 is disposed at a lower end portion of the screw bar 500 at right angles to the screw bar 500. The first main body split portion 111 penetrates through one end of the upper end portion of the pivot shaft 113, And is fixed with respect to the barb 500.

The second main body divider 112 is rotatably coupled to one end of the upper end of the main body divider 112 and is separated from or in contact with the first main body divider 111 to be integrally fixed.

One end of the clamp 114 is rotatably fixed to the outer surface of the first main body division portion 111 or the second main body divisional portion 112 while the other end portion is fixed to the second main body division portion 112 or the first main body division portion 112, And is detachably fastened to the outer surface of the main body dividing section 111. The first main body dividing section 111 and the second main body dividing section 112 are maintained in contact with each other.

Therefore, it can be seen that the clamping arm 120 extends from the outer peripheral surfaces of the first main body partition 111 and the second main body partition 112, respectively.

Meanwhile, the second unit 200 can recognize that the support arm 220 having the caster assembly 230 is formed on the support body 210.

The supporting body 210 has a threaded rod 500 passing through the center and having an inner thread formed on the inner peripheral surface of the threaded rod 500 to engage with a threaded thread formed along the outer peripheral surface of the threaded rod 500, So that the support arm 220, which will be described later, maintains a fixed state irrespective of the ascending and descending.

The third unit 300 to be described later is disposed on the upper side of the support 210.

The support arm 220 is a plurality of members extending radially from the outer surface of the support 210 and extending toward the peripheral ground surface 600 of the manhole cover 400, And the load of the manhole cover 400 rising along with the rising of the manhole cover 100 is distributed and supported.

The caster assembly 230 is formed at an end of each of the plurality of support arms 220 and comes into rolling contact with the peripheral ground surface 600 to thereby facilitate the moving phase of the entire apparatus and at the time of separating and opening the manhole cover 400 And to slightly assist the manhole cover 400 to be separated and opened through a slight swinging motion due to rolling contact with the surrounding ground surface 600.

The support arm 220 includes a first connection portion 221 coupled to an outer surface of the support 210 and a second connection portion 221 extending from the end of the first connection portion 221 and having a caster assembly 230 And the second connection part 222 is formed.

The length of the first connection part 221 is preferably sufficiently longer than the radius of the manhole cover 400 so that the manhole cover 400 does not hinder the rise of the manhole cover 400 when the manhole cover 400 is opened and released.

It is preferable that the support arm 220 further include a reinforcing rib 223 formed along the outer edge of the first connection portion 221 and the second connection portion 222 to improve durability and maintain structural strength Do.

The caster assembly 230 includes a support piece 231 provided at a lower end of each of the plurality of support arms 220 and having a predetermined area parallel to the peripheral paper surface 600, And a wheel 233 rotatably coupled to the support bracket 232 and rolling on the peripheral ground surface 600. In this case,

In the present invention, when the manhole cover 400 is lifted up by the rotation of the screw rod 500 according to the operation of the third unit 300, which will be described later at the beginning of the opening operation of the manhole cover 400, And a protection block 240 detachably disposed between the support piece 231 and the peripheral ground surface 600 to receive the caster assembly 230 so as to prevent the caster assembly 230 from being deformed or broken due to pressure .

The third unit 300 is disposed on the upper side of the second unit 200 and is movable in forward and reverse directions with respect to the stationary second unit 200. The third unit 300 is screwed on the center portion of the second unit 200, A drive transmission portion 320 which is engaged with the elevation guide piece 310 and transmits driving force to the forward and backward rotation of the elevation guide piece 310 manually or automatically from the outside, The present invention can be applied to an embodiment including a structure.

The third unit 300 includes a bearing 330 disposed between the upper side of the second unit 200 and the elevation guide piece 310 so as to support smooth and reverse rotation of the elevation guide piece 310. [ ).

At this time, the drive transmission unit 320 includes a worm wheel 321 having a gear formed along the outer circumferential surface of the elevation guide member 310, and a worm 323 having a worm 323 engaged with the worm wheel 321, The worm shaft 322 and the carrier 324 that is provided at the end of the worm shaft 322 to manually or automatically transmit the driving force to the worm shaft 322. [

The carrier 324 may be a driving actuator such as a motor or the like coupled to one end of the worm shaft 322 for automatic transmission of the driving force and may be provided at one end of the worm shaft 322 It may be the same as the lifting lever to be engaged.

Referring to FIGS. 4 to 7, the manhole cover 400 is detached from the peripheral ground surface 600 by using the manhole cover opening apparatus according to the present invention.

For reference, reference numerals of the drawings not shown in FIGS. 4 to 7 will be referred to FIG. 1 to FIG.

3, the operator prepares the hook piece 130 provided at the end of each of the clamping arms 120 of the first unit 100 to be fixed to the edge of the manhole cover 400, as shown in FIG.

5 (a), the operator unfastens the clamp 114 holding the first and second body division parts 111 and 112 in contact and fixed state as shown in FIG. 5 (a) The hook pieces 130 on both sides of the lifting main body 110 are fixed to the edges of the manhole cover 400 by rotating the second main body divider part 112 about the pivot 113 with respect to the dividing part 111 A spatial margin can be formed.

Next, the operator locks the clamp 114 so that the first and second body division parts 111 and 112 are kept in contact with each other as shown in FIG. 6, and the clamping arms 120 on both sides of the lifting body 110 The hook piece 130 provided at the end of the manhole cover 400 is fixed to the edge of the manhole cover 400. Thus, the preparation of the manhole cover 400 is completed once.

Thereafter, the worker operates the carrier 324 connected to the worm shaft 322 to rotate the worm shaft 322, and the worm wheel 321 engaged with the worm 323 starts to rotate, The threaded rod 500 screwed to the guide piece 310 is rotated while the lifting body 110 is lifted at the same time.

Finally, the manhole cover 400 is lifted as shown in FIG. 7, and the separation opening from the peripheral ground surface 600 is completed.

8, the hook piece 130 is detachably attached to the clamp arm 120 of the first unit 100 so as to be spaced apart from or close to the side of the elevating main body 110 with respect to the respective ends of the clamping arm 120 It goes without saying that an embodiment of the combined structure may be applied.

That is, this structure is a technical means for appropriately adjusting the position of the hook piece 130 in correspondence to various diameters of the manhole cover 400.

More specifically, the insertion body 131 can be inserted into the arm insertion hole 121, which is recessed with a predetermined length and width, from the end of the clamping arm 120 toward the elevating main body 110 side.

The inclined surface portion 132 is formed at an outer end of the insertion body 131 so as to be inclined upwards toward the elevating main body 110 and the fixing bolt 133 is inserted into the insertion body 131 through the inclined surface portion 132, And is inserted into the insertion body 131 along the direction.

One end of the outer circumferential surface of the fixed cone 135 is in contact with the inner circumferential surface of the arm insertion hole 121. The other side of the outer circumferential surface of the fixed cone 135 is in contact with the inclined surface portion 132 and gradually becomes narrower toward the elevating main body 110, The fixing bolt 133 passes through the center of the fixing bolt 133 and is fixed to the bolt head 134 of the fixing bolt 133.

The variable slot 136 is formed in a plurality of incisions from the outer end edge of the stationary cone 135 toward the inner end side of the stationary cone 135 so that the stationary cone 135 is inserted into the arm insertion hole 121 and the inclined surface portion 132, the width thereof can be varied.

Further, the hook piece 130 is bent and extended from the outer end of the insertion body 131 downward.

Accordingly, the operator inserts the insertion body 131 into the female insertion hole 121, places the insertion body 131 at a proper position of the insertion hole 121, attaches the fixed cone 135 to the fixing bolt 133, The fixing bolt 133 is screwed into the insertion body 131 while screwing the fixing bolt 133 adjacent to the bolt head 134 side.

The width of the variable slot 136 of the fixed cone 135 becomes narrower as the end of the fixing bolt 133 is screwed close to the elevating main body 110 side through the insertion body 131, The insertion body 131 can be kept fixed to the clamp arm 120 while being held in a state where the insertion body 131 is firmly pressed and fixed like a wedge between the pressure insertion hole 121 and the slope face portion 132. [

As described above, the present invention provides a manhole lid opening device that allows a manhole cover to be separated and opened from a manhole entrance efficiently and quickly with a relatively simple structure for a long period of time.

It will be apparent to those skilled in the art that many other modifications and applications are possible within the scope of the basic technical idea of the present invention.

100 ... first unit
110 ... lifting body
111 ... first main body division unit
112 ... second main body division unit
113 ... rotating shaft
114 ... Clamp
120 ... clamping arm
121 ... arm insertion hole
130 ... hook
131 ... insert body
132 ... inclined surface portion
133 ... fixing bolt
134 ... bolt head
135 ... fixed cone
136 ... variable slot
200 ... second unit
210 ... support
220 ... support arm
221 ... first connection portion
222 ... second connection portion
223 ... reinforced rib
230 ... caster assembly
231 ... supporting piece
232 ... support bracket
233 ... wheel
240 ... protection block
300 ... third unit
310 ... elevation guide
320 ... drive transmission portion
321 ... Worm wheel
322 .. Worm axis
323 ... worm
324 ... carrier
330 ... bearing
400 ... Manhole cover
500 ... Nasaebong
600 ... around the ground

Claims

A first unit having a plurality of hook pieces which are engaged with an edge of a manhole cover;
A screw rods extending from above the central portion of said first unit;
A second unit supporting a peripheral surface of the manhole cover at a lower side and penetrating the screw rod at a central portion of an upper side; And
A driving unit that is disposed on an upper portion of the second unit and operates independently from the first unit and drives the manhole cover to raise the manhole cover together with the first unit while rotating the screw rod in one direction, And a third unit for transmitting to the thread bar,
The first unit includes:
An elevating main body formed on the top surface of the screw rod,
A clamping arm extending parallel to the manhole cover so as to extend straight from the outer surface of the lifting body,
A rotating shaft disposed at a lower end portion of the screw rod so as to be orthogonal to the screw rod,
A first main body split portion fixed to the screw rod, the first main body split portion passing through one side of the upper end of the rotation shaft,
A second main body split portion which is rotatably coupled to the pivot shaft so as to be rotatable on one end thereof, and which is integrally fixed to the first main body split portion,
One end portion is rotatably fixed to the outer surface of the first main body divisional portion or the second main body divisional portion and the other end portion is detachably engaged with the outer surface of the second main body divisional portion or the first main body divisional portion, A clamp for keeping the first main body division part and the second main body division part in mutual contact and fixed state,
An insertion body inserted into an arm insertion hole formed by being recessed with a predetermined length and width from the end of the clamping arm toward the elevating main body side,
An inclined surface portion formed at an outer end of the insertion body so as to be inclined upwards toward the elevating main body side,
A fixing bolt penetratingly coupled to the insertion body along a longitudinal direction of the insertion body through the inclined face portion,
The other end of the outer circumferential surface is in contact with the inclined surface portion and gradually becomes narrower toward the elevating main body side, and the center portion of the fixing bolt passes through the bolt head of the fixing bolt A stationary cone to be locked,
A stationary cone having a stationary cone and a stationary cone, the stationary cone being formed with a plurality of openings extending from an outer end edge of the stationary cone toward an inner end side of the stationary cone, the stationary cone being inserted and fixed between the arm insertion hole and the slant surface, Including,
Wherein the clamping arms extend from the outer surfaces of the first main body divisional portion and the second main body divisional portion, respectively,
And the hook piece is formed at an end of each of the clamping arms.

delete

The method according to claim 1,
The second unit comprising:
A support having a screw thread penetrating the center portion and having a female screw thread formed on an inner circumferential surface of the screw rod to engage with a male screw thread formed along an outer circumferential surface of the screw rod,
A plurality of support arms extending radially from the outer surface of the support and extending toward the periphery of the manhole cover,
And a caster assembly formed at an end of each of the plurality of support arms and in rolling contact with the peripheral ground surface,
And the third unit is disposed on the top of the support.

The method according to claim 1,
The third unit comprises:
An elevating guide piece disposed on the upper side of the second unit and movable forward and backward with respect to the stopped second unit,
And a drive transmitting portion for engaging with the elevating guide and engaging with the elevating guide to transmit driving force to the forward and backward rotation of the elevation guide member manually or automatically from the outside.

The method of claim 4,
Wherein the drive transmission portion includes:
A worm wheel having a gear formed along an outer circumferential surface of the elevation guide,
A worm shaft having a worm engaged with the worm wheel,
And a carrier provided at an end of the worm shaft to manually or automatically transmit the driving force to the worm shaft.