KR200489266Y1 - Chain block mounting structure for opening and closing valve chamber - Google Patents

Chain block mounting structure for opening and closing valve chamber Download PDF

Info

Publication number
KR200489266Y1
KR200489266Y1 KR2020180001854U KR20180001854U KR200489266Y1 KR 200489266 Y1 KR200489266 Y1 KR 200489266Y1 KR 2020180001854 U KR2020180001854 U KR 2020180001854U KR 20180001854 U KR20180001854 U KR 20180001854U KR 200489266 Y1 KR200489266 Y1 KR 200489266Y1
Authority
KR
South Korea
Prior art keywords
mounting
valve chamber
chain block
opening
bar
Prior art date
Application number
KR2020180001854U
Other languages
Korean (ko)
Inventor
김수학
Original Assignee
김수학
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 김수학 filed Critical 김수학
Priority to KR2020180001854U priority Critical patent/KR200489266Y1/en
Application granted granted Critical
Publication of KR200489266Y1 publication Critical patent/KR200489266Y1/en

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D3/00—Portable or mobile lifting or hauling appliances
    • B66D3/04—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D3/00—Portable or mobile lifting or hauling appliances
    • B66D3/18—Power-operated hoists
    • B66D3/26—Other details, e.g. housings
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
    • E02D29/14—Covers for manholes or the like; Frames for covers
    • E02D29/1445—Tools for positioning or removing cover frames

Abstract

The present invention relates to a chain block mounting base, and more particularly, to a mounting and dismounting mounting structure around a valve chamber or a valve chamber, thereby enabling a considerable reduction in the mounting base volume, In addition, it is possible to significantly shorten the working time in the valve chamber working process by simple installation work of the chain block, thereby allowing the operator to secure safety and fatigue in the work on the road, The present invention relates to a chain block mounting block for opening and closing a valve chamber for opening and closing a valve chamber such that a manhole cover can be released from a doorway at the same time as a valve chamber is opened.

Description

{Chain block mounting structure for opening and closing a valve chamber}

The present invention relates to a chain block mounting base, and more particularly, to a chain block mounting base for opening and closing a valve chamber in order to reduce the fatigue of a worker by a simple installation and use of a chain block during opening and closing of a manhole cover, And a chain block mount.

In general, as industrialization is accelerated, various water pipes including water pipes and sewer pipes are installed in a complicated manner. Since water pipes such as water pipes and sewage pipes are generally buried in the ground, And valves and flow meters and pressure pumps that allow control over the fluid flowing along the water conduit are also located in the ground.

The valve, the flow meter and the pressure pump for controlling the fluid flowing along the water pipe such as the upper and the sewage pipe are located in separate valve chambers buried in the ground and the operator goes into and out of the valve chamber, The above valve includes a wiping valve, an air valve, a pressure reducing valve, and the like. In addition, an auxiliary device such as a flow meter, a pressure pump, an itode valve, and a hydrant They are installed together in the valve chamber.

At this time, in the case of the valve chamber as described above, the door is exposed to the road surface for entrance and exit thereof (entry and exit), and it is possible to enter and exit the operator through the doorway.

Meanwhile, in the case of the valve chamber constructed as described above, the manhole cover is closed with a considerable weight to prevent opening and closing, and the devices provided inside the valve chamber also have a considerable weight. When the manhole cover is opened or closed, There has been a problem in that a lot of workers have to be input at the time of entry into the market, and there is a problem that the safety of workers is threatened due to considerable hassle and complicated work environment when these operations are performed on the road.

Accordingly, in order to solve the above problems, a chain block used for transporting a weight is installed to ensure ease of operation.

However, in the case of the above-mentioned chain block, a separate mounting stand is required. In the case of such a chain block mounting stand, since a structure is required to have a considerable volume, its carrying is very inconvenient and considerable time and workability There has been a problem in that there is a problem that the operation time on the road where the rapid operation is required is considerably delayed and the safety is also threatened.

Korean Patent Registration No. 10-1408781.

The present invention has been devised to solve the above-described problems, and it is an object of the present invention to provide a mounting and demounting structure in the vicinity of a valve chamber or a valve chamber, The present invention has been made in view of the above problems, and it is an object of the present invention to provide a chain block mount for opening and closing a valve chamber for bringing convenience.

In addition, it is possible to shorten the working time significantly in the valve chamber working process by simple installation work of the chain block, thereby enabling the operator to set the chain for opening and closing the valve chamber And a block mounting base.

The present invention also provides a chain block mounting block for opening and closing a valve chamber for allowing the valve chamber to be opened and closed at the same time when the valve chamber is opened and the manhole cover can be released from the entrance and exit. There is purpose.

In order to achieve the above-mentioned object, there is provided a mounting structure comprising at least one or more mounting holes, which are installed in the ground in such a manner that the top surface is exposed at the periphery of the valve chamber inlet and are open to the inside, A mounting tube having an open upper portion formed with a cap stopper portion to be inserted into a female screw portion on an outer circumference thereof and a handle portion formed on an upper surface thereof to be opened and closed by an opening and closing stopper screwed into a female screw portion of the mounting stop mounting groove; And
And a portable mounting base attached to and detached from the mounting base mounting groove of the mounting tube,
The mounting tube,
The valve chamber is vertically integrally formed at the upper part of the valve chamber so as to be embedded in the ground in the course of the valve chamber being buried or separated from the valve chamber so as to be embedded in the ground in the vicinity of the valve chamber inlet,
Portable mounting brackets,
A vertical support having a vertically circular rod shape and a lower portion formed with a threaded male thread portion screwed to the female threaded portion of the mounting stand mounting groove and being inserted into and detached from the mounting stand mounting groove and horizontally rotatable with the mounting tube as an axial tube;
A chain block mounting bar extending perpendicularly from one end to the other end of the column and having a mounting ring capable of being installed by hanging a chain block; And
And at least one reinforcing bar supporting the chain block mounting bar by connecting the supporting block and the chain block mounting bar in an inclined manner,
The chain block installation bar,
A tubular fixing pipe extending from the support and having a plurality of locking holes formed at left and right spaced intervals; And
And a shovel deck which is inserted into the inside of the fixing pipe and has a mounting ring at an end thereof and in which a bullpener which is fixed to one of the locking holes is formed,
Installed by means of insertion and removal of the pull-out bar Adjusting the length of the bar and installing the chain block so that the length is fixed by the catch of the bolt and the catching hole Adjustment of the length of the bar by adjusting the length of the manhole cover The hook is positioned at the center of the manhole cover It can be achieved.

delete

delete

delete

delete

delete

delete

delete

As described above, the inventive chain block mounting block for opening / closing the valve chamber is composed of a main pipe installed in the vicinity of the valve chamber or the valve chamber and a portable installation capable of being attached to the mounting pipe. It is possible to obtain a very convenient effect of the portable and installation use.

In addition, it is possible to rapidly install the chain block by using a simple installation, and thus, the work time can be remarkably shortened.

In addition, since the portable installation stand is configured to be adjustable in its rotation from the installation tube, it is very convenient to carry the opened manhole cover.

1 is an exploded perspective view of a chain block mounting stand for opening and closing the present valve chamber.
Fig. 2 is a perspective view of the chain block mounting block for opening / closing the present valve chamber.
3 is a sectional view of a chain block mounting stand for opening and closing the present valve chamber.
Fig. 4 shows another embodiment of a mounting tube for a chain block mounting stand for opening and closing the present valve chamber.
Fig. 5 is a portable installation stand of another embodiment of the chain block mounting stand for opening and closing the present valve chamber.
Fig. 6 is a state in which the portable block mounting block for opening / closing the design valve chamber is installed.
7 is a state in which the manhole cover is opened in the chain block mounting stand for opening / closing the present valve chamber.
8 is a rotational state view of the portable mounting table of the chain block mounting stand for opening / closing the present valve chamber.
9 is a portable installation stand of a chain block mounting stand for opening / closing the present valve chamber.

The terms or words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms and the inventor may properly define the concept of the term to describe its own design in the best possible way It should be construed as meaning and concept consistent with the technical idea of the present invention.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It should be understood that various equivalents and modifications may be present.

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

Fig. 1 is an exploded perspective view of a chain block mounting stand for opening / closing the present valve chamber, Fig. 2 is an assembled perspective view of a chain block mounting stand for opening / closing the present valve chamber, and Fig. 3 is a sectional view of the chain block mounting stand for opening / closing the present valve chamber.

As shown in Figs. 1 to 3, the present chain block mounting table 1 for opening / closing the design valve chamber is composed of a mounting tube 100 and a portable mounting table 200.

First, at least one or more of the mounting tubes 100 are embedded in the ground around the entrance of the valve chamber, and at the time of embedding, the upper end is exposed to be flush with the ground surface.

At this time, the mounting tube 100 is formed in the shape of a tube having a mounting mount groove 110 opened upward, preferably in the form of a circular tube, and a female screw 111 is formed on the inner circumferential surface .

The opening and closing cap 120 is configured to be opened and closed by an opening and closing cap 120 so that the opening and closing cap 120 can be screwed into the female threaded portion 111 of the mounting- And a handle portion 122 having a groove on the upper surface and capable of adjusting the rotation of the opening and closing cap 120 is formed.

That is, the opening / closing cap 120 is screwed to the female threaded portion 111 of the mounting head mounting groove 110 through the cap threaded portion 121 and is opened when necessary and closed when not in use, Thereby preventing foreign matter from entering.

On the other hand, the mounting tube 100 installed as described above can be variously configured in a structure buried in the ground.

3, the mounting tube 100 may be formed integrally with the valve chamber 10 to be formed at least one portion from the upper portion of the valve chamber 10 to the vicinity of the valve chamber inlet 11, When the valve chamber 10 is integrated with the valve chamber 10, the valve chamber 10 is buried together with the ground.

4, the mounting tube 100 can be constructed so as to be embedded in the ground around the valve chamber inlet 11 of the valve chamber 10, which is separated from the valve chamber 10 and embedded in the valve chamber 10, The separation structure will be applicable to the periphery of the existing valve chamber 10 already installed.

The portable mounting table 200 is configured such that a normal chain block (not shown in the drawing) is selectively inserted into and removed from the mounting tube 100 and separated from the mounting tube 100, .

First, the portable mounting table 200 is constituted by a vertical column 210 which is inserted into and detached from the mounting table mounting groove 110 of the mounting tube 100 and vertically protruded. The column 210 preferably has a circular rod shape .

A lower portion of the support 210 is formed with a support shaft screw portion 211 for providing a coupling force with the support shaft mounting recess 110. The support shaft 210 is fixedly coupled to the mounting tube 100 through the shaft support screw portion 211, And can be rotated left and right in the horizontal direction using the mounting table mounting groove 110 as an axial tube through screw adjustment.

The portable mounting base 200 includes a chain block mounting bar 220 protruding from the upper end of the column 210 at a right angle.

At this time, an installation collar 221 is formed below the chain block installation bar 220 so that a chain block can be installed.

The portable mounting table 200 includes a reinforcing bar 230 that supports the load received by the chain block mounting bar 220 by connecting the strut 210 and the chain block mounting bar 220 in an oblique manner. (230) may be constituted by at least one or more.

That is, the portable mounting table 200 is configured to be removable from the mounting tube 100 to allow an operator to work the valve chamber. The portable mounting table 200 can be installed in the mounting tube 100 through the support 210 during operation. .

5, the length of the chain block mounting bar 220 may be adjusted according to the size of the manhole cover. In this case, Can be configured.

For this purpose, first, the chain block installation bar 220 may form a hollow pipe-shaped fixing pipe 224 extending from the column 210.

The insertion slot 226 may be formed by slidingly inserting and removing the fixing pipe 224 and the mounting hook 221 at an end thereof.

On the other hand, the insertion / removal type insertion / removal slot 226 can be fixed in a state where its length is adjusted.

To this end, the fixing pipe 224 is formed with a plurality of locking holes 225 and 225 'at regular intervals in the left and right longitudinal direction.

The insert jig 226 is formed with a ball jig 227 which is resiliently engaged with one of the engaging holes 225 and 225 'during the insertion and removal process.

If the bolt 227 is pulled or pressed by an external force, the bolt 227 may be engaged with the hook 225 or 225 ' And when the external force is released in a state where it is positioned in one of the locking holes 225 and 225 ', the ball is fixed to the locking holes 225 and 225' by being resiliently hooked.

That is, the length of the chain block installation bar 220 can be adjusted by the insertion / removal of the insertion / removal slot 226 from the fixing pipe 224, and the insertion / removal of the insertion / removal slot 226 is performed according to the diameter of the manhole cover, (221) may be positioned at the center of the manhole cover.

Hereinafter, the operation of the chain block mounting block for opening / closing the present design valve chamber having the above-described structure will be described in detail with reference to the accompanying drawings.

Referring to Figs. 1 to 4, the present invention includes a chain block mounting table 1 for opening and closing the design valve chamber, in which the manhole cover 20 of the valve chamber 10 is opened, So that it is possible to secure the convenience in the process.

For example, when the manhole cover 20 is opened,

Referring to FIG. 6, a portable mounting table 200 carried by a worker is installed in a mounting tube 100 installed in the ground. First, an opening / closing cap (not shown) (120) is opened, and the screw loosening can be removed through the rotation adjustment.

The portable mounting table 200 is installed in the mounting mounting groove 110 of the opened mounting tube 100. This is achieved by mounting the mounting mounting groove 110 in the mounting tube 100 by using the screw thread 211 formed at the lower portion of the column 210, So that the portable mounting base 200 can be easily and conveniently installed.

Meanwhile, the chain block installation bar 220 of the portable installation stand 200 installed as described above is positioned above the manhole cover 20, and the installation ring 221 is installed at the center of the manhole cover 20 .

Thereafter, a conventional chain block 30 is mounted, which is mounted on the mounting hook 221 of the chain block mounting bar 220 by using the hook 32 formed on the body 31 of the chain block 30 do.

7, the chain block 30 is used to open the manhole cover 20, which is fixed to the handle of the manhole cover 20 by means of the chain 33 of the chain block 30 The manhole cover 20 can be lifted and lifted by adjusting the lifting and lowering of the chain block 30, thereby making it possible to open the manhole cover 20 conveniently.

At this time, the manhole cover 20 opened as described above is placed in an opened state on the upper part of the opened valve chamber inlet 11, so that even if the valve chamber inlet 11 is opened, do.

Accordingly, in the present invention, the manhole cover 20 opened as described above can be removed from the valve chamber inlet 11, which can be achieved by adjusting the rotation of the portable mounting base 200.

That is, referring to FIG. 8, the portable mounting base 200 is screwed to the mounting pipe 100, and the chain block mounting bar 220 The valve chamber can be moved to one side of the valve chamber inlet 11 and the valve chamber inlet 11 is completely opened without any obstruction.

Conversely, when the valve chamber inlet 11 is closed, the manhole cover 20 using the chain block 30 is rotated together with the rotation of the portable mounting table 200, It is possible that the valve chamber inlet 11 can be closed.

As described above, the chain block mounting table 1 for opening / closing the valve chamber of the present invention is constructed such that a large number of attractive forces are exerted in the process of opening the manhole cover 20, Thereby enabling easy opening.

In addition, the present chain block mounting table 1 for opening / closing the design valve chamber is very simplified in terms of the structure of the portable mounting table 200, and its handling is very convenient. So that it can be used very efficiently.

On the other hand, in the use of the chain block mounting table 1 for opening / closing the present invention valve chamber, the manhole cover 20 can be configured differently in diameter depending on the standard of the valve chamber 10 Referring to FIG. 5, in the Barbone design, when the chain block installation bar 220 is variably adjustable, it is possible to cope with the manhole cover 20 according to the standard.

9, when the diameter of the manhole cover 20, in which the installation hook 221 of the chain block installation bar 220 does not reach the center of the manhole cover 20, 226 are slidably pulled out of the fixing pipe 224 to extend the length of the chain block mounting bar 220.

The bolt 227 is configured to be drawn out and the bolt 227 is resiliently fastened to the one of the bolts 227 in the withdrawal controlled state, It becomes possible to fix it.

That is, the length of the chain block installation bar 220 through the shovel chute 226 can be adjusted by adjusting the length of the chain block mounting table 1 in accordance with the standard of the manhole cover 20, The efficiency can be further improved by variously employing the block mounting table 1.

As described above, in the state where the operation of the valve chamber is completed using the chain block mounting table 1 for opening / closing the present invention valve chamber, the portable mounting table 200 is separated from the mounting tube 100, and the mounting tube 100 is opened / By using the cap 120, the foreign matter can be prevented from flowing into the mounting table mounting groove 110.

As described above, the chain block mounting block for opening / closing the designed valve chamber is structured so that it is very convenient to carry and use the portable mounting block. Therefore, the convenient operation In particular, the improvement of such a convenient working environment ensures the stability in the work on the road due to the shortening of the working time and the quick work.

100: mounting tube 110: mounting base mounting groove
111: female thread portion 120: opening / closing cap
121: stopper threaded portion 122: handle portion
200: portable installation stand 210: holding
211: Feed screw part 220: Chain block installation bar
221: mounting collar 224: fixing pipe
225,225 ': latching ball 226: shovel dislocation
227: Ballplaner 230: Reinforcing bar

Claims (3)

A mounting seat mounting hole 110 is formed in the ground so that the top surface is exposed to the ground at the periphery of the valve chamber inlet and is opened to the top and has a female threaded portion 111 formed on the inner circumferential surface thereof, The opened upper portion is formed with a stopper threaded portion 121 that is to be inserted into the female threaded portion 111 on the outer circumference and a handle portion 122 is formed on the upper surface thereof, A mounting tube 100 that is opened and closed by an opening / closing cap 120; And
And a portable mounting table (200) attached to and detached from the mounting mounting groove (110) of the mounting tube (100)
The mounting tube (100)
The valve chamber is vertically integrally formed at the upper part of the valve chamber so as to be embedded in the ground in the course of the valve chamber being buried or separated from the valve chamber so as to be embedded in the ground in the vicinity of the valve chamber inlet,
In the portable mounting table 200,
And a lower portion of the mounting table 110 is formed with a vertical columnar bar shape and a lower portion of the mounting table 110 is formed with a threaded male thread 211 to be screwed into the female threaded portion 111, A vertical post 210 rotatable in a horizontal direction with an axial end thereof as an axial tube;
A chain block installation bar 220 extending perpendicularly from the upper end of the support 210 and having an installation collar 221 which can be installed by hanging a chain block; And
And at least one reinforcing bar 230 for supporting the chain block mounting bar 220 by connecting the struts 210 and the chain block mounting bar 220 in an oblique direction,
The chain block mounting bar 220,
A tubular fixed tube 224 extending from the strut 210 and having a plurality of locking holes 225, 225 'formed at left and right spaced intervals; And
An insertion stopper 226 which is inserted into the fixing pipe 224 and has a mounting hook 221 formed at an end thereof and a ball catcher 227 engaged with one of the hooking holes 225 and 225 ' , ≪ / RTI >
The length of the installation block 220 is adjusted by the insertion and removal of the shovel deformation member 226 and the length is fixed by the engagement of the bolt hole 227 and the engagement holes 225 and 225 ' And the installation ring (221) is positioned at the center of the manhole cover according to the diameter of the manhole cover by the variable adjustment.
delete delete
KR2020180001854U 2018-04-27 2018-04-27 Chain block mounting structure for opening and closing valve chamber KR200489266Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2020180001854U KR200489266Y1 (en) 2018-04-27 2018-04-27 Chain block mounting structure for opening and closing valve chamber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2020180001854U KR200489266Y1 (en) 2018-04-27 2018-04-27 Chain block mounting structure for opening and closing valve chamber

Publications (1)

Publication Number Publication Date
KR200489266Y1 true KR200489266Y1 (en) 2019-05-23

Family

ID=66651694

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2020180001854U KR200489266Y1 (en) 2018-04-27 2018-04-27 Chain block mounting structure for opening and closing valve chamber

Country Status (1)

Country Link
KR (1) KR200489266Y1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102146073B1 (en) * 2020-04-20 2020-08-19 주식회사 네오시티 Slip form for the construction of a vertical shaft with varying cross-section and the construction method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004008776A (en) * 2002-06-11 2004-01-15 Komiyama Doboku:Kk Exclusive suspension tool for fall prevention equipment
JP2008231875A (en) * 2007-03-23 2008-10-02 Alinco Inc Manhole falling curing frame
KR101408781B1 (en) 2013-08-07 2014-06-18 주식회사 그룹원 Strut including Lug for mounting wedge and chainblock for drawing strand
KR200475386Y1 (en) * 2014-07-07 2014-12-01 지원산업(주) rotary tilting jig
KR20150010529A (en) * 2013-07-19 2015-01-28 최인환 A Manhole cover having multi-function Frame

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004008776A (en) * 2002-06-11 2004-01-15 Komiyama Doboku:Kk Exclusive suspension tool for fall prevention equipment
JP2008231875A (en) * 2007-03-23 2008-10-02 Alinco Inc Manhole falling curing frame
KR20150010529A (en) * 2013-07-19 2015-01-28 최인환 A Manhole cover having multi-function Frame
KR101408781B1 (en) 2013-08-07 2014-06-18 주식회사 그룹원 Strut including Lug for mounting wedge and chainblock for drawing strand
KR200475386Y1 (en) * 2014-07-07 2014-12-01 지원산업(주) rotary tilting jig

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102146073B1 (en) * 2020-04-20 2020-08-19 주식회사 네오시티 Slip form for the construction of a vertical shaft with varying cross-section and the construction method

Similar Documents

Publication Publication Date Title
US5234018A (en) Sewer check valve and cleanout apparatus
US5060723A (en) Wellhead isolation tool nipple
KR200489266Y1 (en) Chain block mounting structure for opening and closing valve chamber
US8490276B2 (en) Apparatus and method for mounting a plumbing fixture
US9032989B2 (en) Adjustable underground meter installation
US20140013700A1 (en) Safety line anchor securable to roof drain
CN208183551U (en) Positioning device for the installation of bridge pile foundation steel reinforcement cage
KR101500262B1 (en) Height adjustable sleeve
NO311146B1 (en) Device for draining rainwater from the roof surface of a building
JP3199537U (en) Water level adjustment water tank
EP2685015A2 (en) Method of installing equipment in the mouth of a side branch pipe as well as a mounting and fixation tool for use in the method
US9243944B2 (en) Adjustable underground meter installation
CN110168201A (en) Method for installing and/or removing the component of the turbine with turbine cylinder, adapter and the application for system used in the method and adapter
US20090026325A1 (en) Temporary Support Structure for Use When Installing or Removing Components
EP3091131A1 (en) Plumbing device and associated systems and methods
KR20130096491A (en) Air balance arm
KR100913815B1 (en) A four lines power cable lead apparatus
US20220126306A1 (en) Sand Traps For Use In Oil And Gas Extraction Operations
CN108487327A (en) The laborsaving antitheft municipal well lid of one kind and extracting tool and assembly and disassembly methods
US3542294A (en) Sprinkler support
CN110701382B (en) Stop valve
RU2565604C1 (en) Wellhead sealing device intended for shutdown of tripping operation for downhole pumping equipment and wellhead sealing method using above device
KR101980850B1 (en) Valve replacement device using saddle valve
US8819874B2 (en) Flush valve structure for a toilet tank
CN219062608U (en) Hoisting and stretching type valve extension operation device

Legal Events

Date Code Title Description
E701 Decision to grant or registration of patent right
REGI Registration of establishment