KR101630760B1 - The supporter for concrete forms of slab - Google Patents

The supporter for concrete forms of slab Download PDF

Info

Publication number
KR101630760B1
KR101630760B1 KR1020150057063A KR20150057063A KR101630760B1 KR 101630760 B1 KR101630760 B1 KR 101630760B1 KR 1020150057063 A KR1020150057063 A KR 1020150057063A KR 20150057063 A KR20150057063 A KR 20150057063A KR 101630760 B1 KR101630760 B1 KR 101630760B1
Authority
KR
South Korea
Prior art keywords
sliding bar
adjusting means
bar
height adjusting
slab
Prior art date
Application number
KR1020150057063A
Other languages
Korean (ko)
Inventor
김귀환
백호영
노성환
Original Assignee
주식회사 넥스플러스
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 주식회사 넥스플러스 filed Critical 주식회사 넥스플러스
Priority to KR1020150057063A priority Critical patent/KR101630760B1/en
Application granted granted Critical
Publication of KR101630760B1 publication Critical patent/KR101630760B1/en

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G25/00—Shores or struts; Chocks
    • E04G25/04—Shores or struts; Chocks telescopic
    • E04G25/06—Shores or struts; Chocks telescopic with parts held together by positive means
    • E04G25/065—Shores or struts; Chocks telescopic with parts held together by positive means by a threaded nut
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G25/00—Shores or struts; Chocks
    • E04G25/04—Shores or struts; Chocks telescopic
    • E04G2025/042—Shores or struts; Chocks telescopic with devices to avoid accidental disengagement of the telescopic elements, e.g. during transport

Abstract

The present invention relates to a slab panel which is installed between a bottom surface of a slab panel and a bottom so as to support a slab panel including a supporting member without being separated from a supporting member at the time of dismantling the slab panel, The present invention relates to a slab-based slab-panel supporter for preventing a safety accident caused by a rapid descending speed of a slab panel,
A fixed bar (100) formed into a pipe shape so that a sliding bar can be inserted and slide up and down;
A sliding bar 300 inserted in the fixing bar and slid up and down to support the slab panel;
Upper and lower height adjusting means (500, 500 ') coupled to the outside of the sliding bar to adjust the sliding distance of the sliding bar;
And a gas spring 700 provided on the inner side of the fixing bar and one end of which is fastened to the sliding bar to gradually lower the sliding bar when the slab panel is removed.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a slab-

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a slab-type slab-panel supporter, and more particularly, to a slab-formwork supporter for slab-type slab-panel supporter.

The multi-layer structure of the concrete reinforced concrete structure starts from the installation of the concrete wall and the slab construction form, and a frame such as a mold having a shape of a wall is formed first, and a ceiling slab construction plate is placed on the floor The 'frame' and the 'plate', which are called 'molds', are generally formed of a rectangular plate panel called a slab panel, and the panels are formed by a method of filling and curing the concrete inside the frame and the upper surface of the plate, It is made by connecting many.

Thus, the construction of the wall and the slab begins by installing a formwork having an inner space and an upper surface to fill the concrete by connecting the plurality of slab panels.

In other words, one wall is made of concrete filled in a space between two wall molds, with the fronts facing each other, separated by the thickness of the wall.

And a ceiling slab panel is coupled to the upper end of the wall formwork so as to be parallel to the floor so that the upper surfaces of the plurality of slab panels form the same plane and the gap between the opposite two wall formworks is not blocked, Concrete is poured together on the top surface of the panel.

In the case of the slab panel constituting the above-described mold, conventionally, a wooden panel has been mainly used. However, in the case of using a wood panel, since the connection assembly between the panels is performed by nailing or wire tightening, It takes manpower and time, and it takes a lot of time and manpower to demolish the concrete after curing.

Accordingly, in recent years, a wood-metal panel using a metal such as iron or an aluminum alloy (hereinafter simply referred to as "aluminum") together with wood has been developed and used in various building construction sites, and its use range and scale are rapidly increasing There is a tendency.

A conventional mold structure, which is a kind of mold in which concrete is poured by assembling various panels as described above, will be described with reference to FIG.

The conventional aluminum formwork has a structure in which the slab panel 13 is placed in parallel with the floor at the upper end of a wall form 11 having a single upright structure and standing on the upper surface of the floor surface A in order to construct each wall W.

The supporters S3 support the slab panel 13 by standing up to the bottom surface A. The slab parallel to the horizontal bar 14 is coupled along the upper end of the back surface of the wall formwork, 13 and the wall mold 11 are connected to each other.

At this time, the two wall molds 11, which are opposed to each other with the flat front surface being spaced apart by the thickness of the wall W, are coupled with the plurality of connecting pieces C, which are to be crossed in the thickness direction, The fins at both ends of each connecting piece C are removed to dismantle the wall mold and the cut ends of each connecting piece C are buried in the wall concrete.

The pressure due to the load of the concrete placed for the installation of the wall W is supported by the reinforcing bars between the wall panels on the back surface of the wall mold 11 and a horizontal support for holding the wall is held.

Further, the slab formwork 13 is provided with a plurality of slab-shaped dies 13 each having a front surface, a front surface, and a bottom surface, which are opposed to the opposed surfaces of the opposed two sidewalls, The load of the entire concrete laid on the upper surface of the slab panel is applied to the both ends of the slab panel in such a manner that the upper ends thereof are engaged with the upper ends of the slab panels, The structure is supported only by the two wall molds.

Therefore, in the above structure, since the slab panel can not withstand the load of the concrete, the supporters S3 are installed between the bottom surface of the slab panel 13 and the bottom surface A as described above.

Therefore, the conventional aluminum formwork installed as described above has a problem that, first, since the wall horizontal support member must be coupled to the back surface of the wall formwork, the formwork installation time is prolonged and the construction period is extended. Second, the slab panel supported by the wall formwork Since the supporters are excessively required to support the intermediate portions other than both ends, the time required to install and disassemble the supporter becomes longer.

Third, since the various subsidiary materials for installing the formwork, that is, the slab panel and the various members are connected by the pins, it is possible to reduce the recyclability due to the high breakage rate of the various subsidiary materials when the form is installed and disassembled, And the cost for disposal of the waste material occurs.

Korean Utility Model Registration No. 20-0384389

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is therefore an object of the present invention to provide a slab panel which is installed between a bottom surface of a slab panel and a bottom, When the slab panel is dismantled, the slab panel is not detached from the support member, and the height of the slab panel is gradually lowered due to the weight and weight of the slab panel, thereby preventing safety accidents caused by the rapid descent speed of the slab panel And preventing deformation or damage due to abrupt descent of the slab-like supporter.

According to an aspect of the present invention, there is provided a slab-based common slab panel supporter comprising: a fixed bar formed in a pipe shape so that a sliding bar can be inserted and slid up and down;

A sliding bar 300 inserted in the fixing bar and slid up and down to support the slab panel;

Upper and lower height adjusting means (500, 500 ') coupled to the outside of the sliding bar to adjust the sliding distance of the sliding bar;

And a gas spring 700 provided on the inner side of the fixing bar and one end of which is fastened to the sliding bar to gradually lower the sliding bar when the slab panel is removed.

The fixing bar 100 is formed in a pipe shape so that the sliding bar 300 can be inserted and slid up and down. The fixing bar 100 has a flange 110 formed at a lower portion thereof and fixed to the ground.

A flange 131 extending on one side of the fixing bar, a head 133-1 fixed to the flange and pivoted from the hinge to press and fix the fixing bar 100 and the sliding bar 300, And a lever 133 having a pressing portion 133-3 of a lever which rotates and releases the hinge from its starting point.

The sliding bar 300 is inserted into the fixing bar 100 and slides up and down to support the slab panel. The screw 311 is formed on the outside so that the upper and lower height adjusting means 500 and 500 'can move up and down. The protrusions 310 and the grooves 330 are formed in the order of the protrusions 310, the grooves 330, the protrusions 310 and the grooves 330 in order and the upper and lower height adjusting means 500 and 500 ' The upper and lower height adjusting means 500 and 500 'are rotated only up to the portion where the grooves 330 to be moved are formed, and then the upper and lower height adjusting means 500 and 500' are slid up and down along the grooves 330 to be moved to a desired position.

The upper and lower height adjusting means 500 and 500 'are installed outside the sliding bar 300 to adjust a sliding distance of the sliding bar 300 to install a slab panel fixed to the upper portion of the sliding bar 300, The projections 510 formed on the sliding bar 300 and the projections 510 formed with the threads 511 to correspond to the grooves 330 and the grooves 530 are moved upward and downward by a predetermined height, Two or more protrusions 510, grooves 330, protrusions 510, and grooves 530 are formed in each of the lower height adjusting units 500 and 500 ', respectively;

The protrusion 560 is provided on the upper height adjusting means 500 and the stopper 560 'is provided on the lower height adjusting means 500' so that when the upper height adjusting means is rotated, the protrusion is caught by the stopper, So that the position of the projecting portion 510 or the projecting portion 510 'or the groove 530' of the lower height adjusting means can be accurately aligned.

The upper and lower height adjusting means 500 and 500 'are fastened at one side using a hinge 570 and the other side is fastened with a pin so that the fastening bar 100 So that the upper and lower height adjusting means 500 and 500 'can be fastened at desired positions even in a state where the sliding bar 300 is coupled to the upper and lower height adjusting mechanisms 500 and 500'.

The gas spring 700 is provided on the inner side of the fixing bar and one end of the gas spring 700 is fastened to the sliding bar so that the sliding bar gradually slides downward when the slab panel is removed, So that a safety accident can be prevented from occurring.

According to the present invention, there is provided a slab panel, which is provided for solving the problem of disassembling a slab panel, and which supports a slab panel provided between a bottom surface and a bottom of the slab panel and including a support member, By preventing the slab panel from being separated from the member and by gradually decreasing the height by itself due to the weight and weight of the slab panel, it is possible to prevent safety accidents caused by the rapid descent speed of the slab panel and to prevent deformation or damage due to abrupt descent. There is an effect that can be done.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a structure of a conventional wall and a slab-
2 is a perspective view showing a conventional supporter,
Figure 3 is an exploded perspective view in accordance with an embodiment of the present invention.
4 is a perspective view of an embodiment of the present invention,
5 is a top view of an embodiment of the present invention,
Figures 6-9 illustrate an operational view in accordance with one embodiment of the present invention.
10 is an exploded perspective view according to another embodiment of the present invention;
11-12 are views illustrating a disassembly process according to an embodiment of the present invention.

The terms and words used in the present specification and claims should not be construed to be limited to ordinary or dictionary meanings, but the inventor may appropriately define the concept of the term to describe its invention in the best way Can be interpreted as meaning and concept consistent with the technical idea of the present invention.

It should be noted that the embodiments described in this specification and the configurations shown in the drawings are merely preferred embodiments of the present invention and do not represent all the technical ideas of the present invention, 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.

As shown in FIGS. 3 to 12, the slab-type slab panel supporter according to an embodiment of the present invention includes a fixed bar 100 formed in a pipe shape so that a sliding bar can be inserted and slid up and down; A sliding bar 300 inserted in the fixing bar and slid up and down to support the slab panel; Upper and lower height adjusting means (500, 500 ') coupled to the outside of the sliding bar to adjust the sliding distance of the sliding bar; And a gas spring 700 provided on the inner side of the fixing bar, one end of which is fastened to the sliding bar so that the sliding bar is gradually lowered when the slab panel is removed.

The fixed bar 100 is formed in a pipe shape so that the sliding bar 300 can be inserted and slid up and down, and a flange 110 is formed at a lower portion thereof so as to be fixed to the ground.

The upper portion of the fixing bar 100 is provided with a release preventing means 130 for preventing the sliding bar 300 from being detached from the fixing bar 100.

The release preventing means 130 is provided with a lever 133 which is rotatable on the hinge from the flange 131 extending from one side of the fixed bar so that the head 133-1 of the lever is supported by the upper and lower height adjusting means 500,500 'of the fixed bar 100 to prevent the sliding bar 300 from being released from the fixed bar 100. In releasing the operation, the operator presses the pressing portion 133-3 of the lever to pivot and rotate the hinge.

The sliding bar 300 is inserted into the fixing bar 100 and slides up and down to support the slab panel. The sliding bar 300 includes a projection 311 formed with a thread 311 for moving the upper and lower height adjusting means 500 and 500 ' At least two grooves 310 and two grooves 330 are formed.

That is, the protrusions 310, the grooves 330, the protrusions 310, and the grooves 330 are formed in this order.

The upper and lower height adjusting means 500 and 500 'are rotated only up to a portion where the upper and lower height adjusting means 500 and 500' are moved up and down to a desired height, It is possible to move to a desired position easily and quickly.

The pair of upper and lower height adjusting means 500 and 500 'are fastened to the outside of the sliding bar 300 to adjust a sliding distance of the sliding bar 300 to install a slab panel fixed to the upper portion of the sliding bar 300 The projections 510 and the grooves 530 formed with the threads 511 corresponding to the protrusions 310 and the grooves 330 formed on the sliding bar 300 and the grooves 530 are formed on the upper and lower sides by a predetermined height, At least two protrusions 510, grooves 330, protrusions 510 and grooves 530 are formed in each of the lower height adjusting means 500 and 500 ', respectively.

The protrusion 560 is provided on the upper height adjusting means 500 and the stopper 560 'is provided on the lower height adjusting means 500' so that when the upper height adjusting means is rotated, The protrusions 510 'of the lower height adjusting means or the grooves 530 "of the lower height adjusting means can be precisely aligned.

The reason for making the height adjusting means double is that when the sliding bar is slid to the top when only one is provided, the protruding portion 510 of the height adjusting means can be simply slid to the upper portion after aligning with the groove 330 of the sliding bar, This is because a safety accident may occur due to the descent at high speed due to the weight of the sliding bar.

Therefore, when the slab panel is installed to hold the slab, the protruding portion 310 of the sliding bar 300 and the protrusions 510 and 510 'of the upper and lower height adjusting means 500 and 500' The upper and lower height adjusting means 500 and 500 'are rotated so that grooves 530 and 530' formed on the upper and lower height adjusting means 500 and 500 'are formed on the protrusions 310 formed on the sliding bar 300, The slide bars 300 are moved upward along the respective grooves 330, 530 and 530 'so that the slabs are poured into the slabs 330 and 330', respectively, with the protrusions 510 and 510 'formed on the upper and lower height adjusting means 500 and 500'

The upper and lower height adjusting means 500 and 500 'are rotated so that the protruding portions 510 of the upper play adjusting means are positioned in the grooves 530' of the lower height adjusting means The upper and lower height adjusting means 500 and 500 'are fixed by the departure preventing means 550 such that the upper and lower height adjusting means 500 and 500' are integrally rotatable and then the upper and lower height adjusting means 500 and 500 ' The slab panel is removed.

As another embodiment, the upper and lower height adjusting means 500 and 500 'are fastened at one side by using the hinge 570 and the other side is fastened by a pin so that they can be separated by half with respect to the hinge The upper and lower height adjusting means 500 and 500 'can be fastened at a desired position even in a state where the sliding bar 300 is coupled to the fixing bar 100.

The gas spring 700 is provided on the inner side of the fixing bar and one end is fastened to the sliding bar so that the sliding bar gradually slides downward when the slab panel is removed so that the sliding bar is moved at a high speed So that a safety accident can be prevented from falling.

100: Fixing bar 130:
300: Sliding bar 310: Threaded
330: Home
500,500 ': upper and lower height adjusting means 510, 510': projection
530,530 ': Thick groove 560: Projection
560 ': Stopper

Claims (6)

A fixed bar (100) formed into a pipe shape so that a sliding bar can be inserted and slide up and down;
A sliding bar 300 inserted in the fixing bar and slid up and down to support the slab panel;
The slab panel 300 is fixed to the upper portion of the sliding bar 300 by adjusting the sliding distance of the sliding bar 300 by being coupled to the outside of the sliding bar 300, The projections 510 and the grooves 530 formed with the projections 310 formed in the sliding bar 300 and the grooves 511 formed in correspondence with the grooves 330 are formed by upward and downward by a predetermined height, At least two protrusions 510 are formed in each of the upper and lower height adjusting means 500 and 500 'and at least two protrusions 510 are formed in the order of the protrusions 510 and 530, The projection 560 is provided with a stopper 560 'on the lower height adjusting means 500' so that when the upper height adjusting means is rotated, as the projection is caught by the stopper, the protrusion 510 of the upper play adjusting means and the lower height The position of the protrusion 510 'or the groove 530' The upper and lower height adjusting means 500 and 500 '
And a gas spring (700) provided on the inner side of the fixing bar, one end of which is fastened to the sliding bar to gradually lower the sliding bar when the slab panel is removed.
The method according to claim 1,
The fixing bar 100 is formed in a pipe shape so that the sliding bar 300 can be inserted and slid up and down. The fixing bar 100 has a flange 110 formed at a lower portion thereof and fixed to the ground;
A flange 131 extending on one side of the fixing bar, a head 133-1 fixed to the flange and pivoted from the hinge to press and fix the fixing bar 100 and the sliding bar 300, And a lever (133) having a pressing portion (133-3) of a lever which rotates and releases the hinge from a starting point of the lever (133).
The method according to claim 1,
The sliding bar 300 is inserted into the fixing bar 100 and slides up and down to support the slab panel. The sliding bar 300 includes a projection 311 formed with a thread 311 for moving the upper and lower height adjusting means 500 and 500 ' The upper and lower grooves 310 and 330 are formed in the order of the protrusions 310, the grooves 330, the protrusions 310 and the grooves 330 in order and the upper and lower height adjusting means 500 and 500 ' The upper and lower height adjusting means 500 and 500 'are rotated only up to the portion where the grooves 330 are formed so that the upper and lower height adjusting means 500 and 500' can be moved up and down along the grooves 330 to the desired positions. supporter.
delete The method of claim 1, wherein
The upper and lower height adjusting means 500 and 500 'are fastened at one side using a hinge 570 and the other side is fastened with a pin so that the fastening bar 100 can be separated from the hinge by a half, And the upper and lower height adjusting means (500, 500 ') can be fastened at a desired position even in a state where the sliding bar (300) is coupled to the slab-
The method according to claim 1,
The gas spring 700 is provided on the inner side of the fixing bar and one end is fastened to the sliding bar so that the sliding bar gradually slides downward when the slab panel is removed so that the sliding bar is moved at a high speed So that a safety accident can be prevented from occurring due to falling of the slab.
KR1020150057063A 2015-04-23 2015-04-23 The supporter for concrete forms of slab KR101630760B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150057063A KR101630760B1 (en) 2015-04-23 2015-04-23 The supporter for concrete forms of slab

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150057063A KR101630760B1 (en) 2015-04-23 2015-04-23 The supporter for concrete forms of slab

Publications (1)

Publication Number Publication Date
KR101630760B1 true KR101630760B1 (en) 2016-06-20

Family

ID=56354507

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150057063A KR101630760B1 (en) 2015-04-23 2015-04-23 The supporter for concrete forms of slab

Country Status (1)

Country Link
KR (1) KR101630760B1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101832180B1 (en) * 2017-05-15 2018-02-28 주식회사 넥스시스템즈 Once step the let down slab panel
KR101841061B1 (en) * 2017-06-28 2018-04-04 주식회사 넥스시스템즈 supporter for slab panels
KR20180107399A (en) * 2017-03-20 2018-10-02 백희정 Prop head guide

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200384389Y1 (en) 2005-02-25 2005-05-16 (주)거혁건설 The supporter for concrete forms of slab
KR100769999B1 (en) * 2006-08-02 2007-10-25 깨뱉시스템주식회사 Improved support, self-supported improved support and system form using the same
KR101142875B1 (en) * 2009-10-13 2012-05-10 (주)거혁산업 Drop apparatus for supporter
KR20120106264A (en) * 2011-03-18 2012-09-26 (주)거혁산업 Structure for supporter having shock absorber
KR101415915B1 (en) * 2013-10-04 2014-07-04 (주)베이스테크 Supporter for concrete forms of slab

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200384389Y1 (en) 2005-02-25 2005-05-16 (주)거혁건설 The supporter for concrete forms of slab
KR100769999B1 (en) * 2006-08-02 2007-10-25 깨뱉시스템주식회사 Improved support, self-supported improved support and system form using the same
KR101142875B1 (en) * 2009-10-13 2012-05-10 (주)거혁산업 Drop apparatus for supporter
KR20120106264A (en) * 2011-03-18 2012-09-26 (주)거혁산업 Structure for supporter having shock absorber
KR101415915B1 (en) * 2013-10-04 2014-07-04 (주)베이스테크 Supporter for concrete forms of slab

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180107399A (en) * 2017-03-20 2018-10-02 백희정 Prop head guide
KR102041352B1 (en) * 2017-03-20 2019-11-08 백희정 Prop head guide
KR101832180B1 (en) * 2017-05-15 2018-02-28 주식회사 넥스시스템즈 Once step the let down slab panel
KR101841061B1 (en) * 2017-06-28 2018-04-04 주식회사 넥스시스템즈 supporter for slab panels

Similar Documents

Publication Publication Date Title
KR101514395B1 (en) Supporting device of slab form
KR101539447B1 (en) Beam form easy to removal and method for constructing the same
US8282067B2 (en) Ceiling joist formwork with automatic stripping of the inner board
KR101310842B1 (en) Concrete mold assembly and method of constructing beam by using the same
KR101832183B1 (en) The supporter for concrete forms of slab
KR101630760B1 (en) The supporter for concrete forms of slab
KR200460686Y1 (en) Mould support device for formation beam
KR101586858B1 (en) Method for constructing slab and girder of concrete building
KR101647347B1 (en) The electric supporter for concrete forms of slab
CN108442693A (en) One kind fast moving installation support system
KR20190008053A (en) An assembly type supporting beam mold using form-panel, and method for constructing this same
KR102179294B1 (en) Transformable formwork apparatus and method for manufacturing concrete precast wall
KR101618703B1 (en) Slab concrete mold for building
KR100818609B1 (en) The construction structure of slab form being dismantled easily
KR101396434B1 (en) Movable mold device
WO2020134239A1 (en) Side mold fixing method for production of prefabricated component
RU2707117C1 (en) Fixed formwork unit
KR20180125648A (en) The supporter for concrete forms of slab
KR101190150B1 (en) Slip Form with Lightweight FRP Plate
KR101832180B1 (en) Once step the let down slab panel
KR101215384B1 (en) Flying table form
KR102144769B1 (en) Hybrid beam
KR100557288B1 (en) supporting beam-forms of Prefabricated for construction
KR101728007B1 (en) Supporter fixing unit for mould
KR101673907B1 (en) Roof building construction methods and construction materials used him

Legal Events

Date Code Title Description
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20190515

Year of fee payment: 4