baber/WOPTO huggingface dataset:
Patent KR-101979191-B1 (KR)
Inventor: JANG SEUNG BIN
IPC: E01C23/22
Filed: 2019-02-25
Granted: 2019-05-17
Abstract: The present invention relates to a two liquid-type room temperature setting-type traffic lane painting apparatus which is able to be mounted on a vehicle or the like, to mix a main agent with a hardening agent, to paint a traffic lane on a road surface. According to the present invention, the two liquid-type room temperature setting-type traffic lane painting apparatus comprises: a main agent storage tank; and a hardening agent storage tank. The present invention is able to mix the main agent with the hardening agent in a mixer by multiple steps, to evenly mix the main agent with the hardening agent, to moving an elevating operation plate up and down, to selectively block an inlet and an outlet of the main agent and the hardening agent, to allow a user to paint even at a room temperature without heating even when a two liquid-type paint spraying work of a painting work is stopped for a certain period of time or longer or is waiting, and to solve the existing problem that a part of the two liquid-type paint remains inside a spray nozzle to be stuck. In addition, the present invention is able to have the mixer by multiple steps, to mix the main agent and the hardening agent, which are discharged through a main agent discharge slit and a hardening agent discharge slit in the mixer by multiple steps, to immediately paint the road surface by using the mixed two liquid-type paint, to more evenly mix the two liquid-type paint, to keep a certain viscosity of the two liquid-type paint, to improve a painting quality, to control a thickness of the paint film on the traffic lane, to change the paint film of the traffic lane into shapes such as a bump or a wave, to have a sufficient thickness of the paint film on the traffic lane, to have a low escape rate of glass beads, to improve visibility of the driver while driving in rain or at night, and to realize a safer driving.
Patent KR-102097514-B1 (KR)
Inventor: KIM DONG JIN
IPC: H02J7/00
Filed: 2019-02-26
Granted: 2020-04-06
Abstract: The present invention provides a battery explosion prevention charger using communication port error check, which can accurately check an error of a communication port to prevent battery explosion due to malfunction of the communication port. The battery explosion prevention charger comprises a battery encapsulation unit (10), a power supply unit (20), a communication port (30), a test unit (40), a first switching unit (50), a second switching unit (60), a battery charge management unit (70), a communication port inspection management unit (80), a power supply operation unit (90), an operation mode selection unit (100), a test value review unit (110), and an external notification unit (120).
Patent KR-102116310-B1 (KR)
Inventor: KIM TAE WOO
IPC: H01F38/30
Filed: 2019-02-27
Granted: 2020-05-28
Abstract: A jump wire-integrated zero current transformer of the present invention a zero current transformer (100) formed with a circular through-hole (110) at a center, and formed with a fitting groove (120) on a lower surface in contact with a PCB (300); and a jump wire (200) including a first pin (210) formed in a vertical direction, a mounting portion (220) bent in a horizontal direction from an upper end side of the first pin (210), a penetration portion (230) bent vertically downward form the mounting portion (220), a fitting portion (240) bent in the horizontal direction from a lower end side of the penetration portion (230), and a second pin (250) bent in the vertical direction from the fitting portion (240), the zero current transformer (100) and the jump wire (200) are fastened to the PCB (300) like one component. Accordingly, the zero current transformer and the jump passing through the zero current transformer are simply coupled to each other, so that the fastening process with the PCB is simplified to reduce manufacturing costs.
Patent KR-102207113-B1 (KR)
Title: 고효율 입체교반을 제공하는 흡착제 제조장치
IPC: B01F27/71
Filed: 2019-02-28
Granted: 2021-01-25
Abstract: 본 발명은 흡착제 제조 장치에 관한 것으로 분말상태의 원료를 저장하는 저장조; 상기 저장조와 연통되도록 형성되고, 원통형으로 형성되어 중앙에 축을 형성하고 상기 축에 복수개의 날개부를 구비하여 상기 원료를 혼합하는 혼합기; 상기 혼합기와 연통되도록 형성되어, 상기 혼합기에 용액을 공급하는 용액기; 상기 혼합기와 연통되도록 형성되어, 상기 혼합기에서 혼합된 원료를 압출성형하는 배출부;를 포함하여 구성된다. 본 발명에 따르면, 원료를 전체적으로 혼합할 수 있으면서도, 부분적으로도 혼합이 가능하여 빠른 시간 안에 연료를 혼합할 수 있는 효과가 있다.
Patent KR-101989819-B1 (KR)
Title: Method for handleing stainless coil
Inventor: KIM CHA BIN
IPC: B21D37/14
Filed: 2019-02-28
Granted: 2019-09-30
Abstract: The present invention relates to a stainless coil handling method. The method includes the following steps of: preparing a bobbin (110) on which a metal coil (c) is wound; unwinding the coil (c) wound on the bobbin (110) placed on a placement unit (111); enabling the unwound coil (c) to be inserted into a guide part (112) and go via the same; and processing a processing target area of the coil (c), going via the guide part (112), by making the coil reach a processing unit (113). Therefore, the stainless coil handling method is capable of improving an environment in which coils are handled.
Patent KR-102256332-B1 (KR)
Title: 자기장 구동 시스템
IPC: A61B34/35
Filed: 2019-03-08
Granted: 2021-05-26
Abstract: 자기장 구동 시스템이 개시된다. 자기장 구동 시스템은 레일; 상기 레일 상에 설치되는 제1자기장 생성부; 및 상기 레일 상에 설치되며, 타겟 영역을 사이에 두고 상기 제1자기장 생성부와 마주 배치되는 제2자기장 생성부를 포함하되, 상기 제1자자장 생성부와 상기 제2자기장 생성부는 상기 타겟 영역에 자기장을 생성할 수 있다.
Patent KR-102185977-B1 (KR)
IPC: E04G5/00
Filed: 2019-03-15
Granted: 2020-12-03
Abstract: 본 발명은 거푸집(A)의 외측면에 맞닿도록 수직방향으로 형성하는 수직몸체(110); 상기 수직몸체(110)의 중간에서 거푸집(A)의 외측면에 맞닿도록 수평방향으로 형성하되 양측에 결합공(121)을 구비하는 수평몸체(120); 상기 수직몸체(110)의 상부와 하부에 거푸집(A)의 외측면에 고정할 수 있도록 형성하는 고정부재(130); 상기 수평몸체(120)의 후방에 거푸집(A)의 인양과정에서 사용하는 인양부재(B)를 내부에 삽입시켜 이탈 또는 이동을 방지할 수 있도록 형성하는 이탈 방지부재(140);를 포함하는 인양효율이 향상된 거푸집 고정장치를 제공하기 위한 것으로, 본 발명은 거푸집의 인양과정에서 인양부재가 흔들리거나 이탈하지 않도록 지지하여 안정적인 인양작업을 수행할 수 있는 효과를 갖는다. 또한, 본 발명은 거푸집의 인양과정에서 발생하는 변형 및 파손을 방지하여 내구성 및 사용수명을 향상시킬 수 있는 효과를 갖는다. 특히 본 발명은 고정핀의 이탈 및 분실을 방지하여 작업효율을 향상시킬 수 있는 효과를 갖는다. 아울러 본 발명은 진동 및 외부충격으로 발생하는 고정핀의 풀림을 방지할 수 있는 효과를 갖는다.
Patent KR-102212335-B1 (KR)
IPC: A61K9/50
Filed: 2019-03-21
Granted: 2021-02-04
Abstract: 본 발명은 박테리아에서 유래한 독성이 약화된 세포밖 소포체 및 이의 용도에 관한 것으로서, 보다 상세하게는 독성이 약화된 박테리아 세포밖 소포체(bacterial extracellular vesicles with reduced toxicity)를 포함하는 질병 치료용 또는 진단용 약제학적 조성물, 물질 전달용 조성물, 백신 조성물 및 이의 제조 방법 등에 관한 것이다. 본 발명에 따른 독성이 약화된 박테리아 세포밖 소포체를 이용하여 생체 내외에서의 부작용을 줄이고 효능을 증진시켜 암을 포함한 다양한 질병 치료제 또는 진단제, 약물 전달체, 및/또는 백신 전달체로서의 안정성과 효능을 증진시킬 수 있다. 또한, 질병 치료용 또는 백신용 물질이 로딩된, 본 발명의 독성이 약화된 박테리아 세포밖 소포체 및 그의 제조 방법은  in vitro  또는  in vivo 에서 치료용, 약물 전달용, 백신용, 또는 실험용으로 사용될 수 있다.
Patent KR-102064586-B1 (KR)
Title: Charge management method for energy storage system
Inventor: SHIN MIN HO
IPC: H01M10/44
Filed: 2019-03-25
Granted: 2020-01-09
Abstract: One embodiment of the present invention provides a charging management method of an energy storage system, including: a sensing step of allowing a sensing unit to measure a state of an energy storage system to transmit the result to an energy management system; a cost determining step of allowing the energy management system to determine whether temperature loss cost by reduction of temperature of the energy management system is higher than electricity charge based on the temperature of the energy storage system, which is received from the sensing unit; and a charging/discharging step of allowing the energy management system to control the energy storage system to make the energy storage system charged or discharged according to SOC of the energy storage system when the temperature loss cost is higher than the electricity charge. Therefore, the present invention can maintain a battery state of an energy storage system to be optimal to extend life of the energy storage system and reduce maintenance cost and electricity charge.
Patent KR-102257033-B1 (KR)
Title: 파장 가변필터
IPC: G02B5/20
Filed: 2019-03-27
Granted: 2021-05-26
Abstract: 파장 가변필터를 개시한다. 
본 실시예의 일 측면에 의하면, 투과시키는 빛의 파장이 열에 의해서 가변되는 파장 가변필터에 있어서, 기 설정된 열 전도율을 갖는 도핑된 물질로 구성되며, 기 설정된 파장의 광만이 공진하여 상기 파장 가변필터를 투과하도록 하는 매질부와 상기 매질부의 기 설정된 열 전도율보다 상대적으로 낮은 열 전도율을 갖는 물질로 구성되고, 상기 매질부의 상·하면에 증착되어 기 설정된 비율의 빛만을 상기 매질부로 투과시키며, 일측에 기 설정된 형상으로 식각(Etching)된 단편(斷片)부를 포함하는 고 반사부 및 상기 단편부를 이용해 상기 매질부에 직접 접촉하며, 상기 매질부로 전원을 전달하는 패드를 포함하는 것을 특징으로 하는 파장 가변필터를 제공한다.
Patent KR-102183454-B1 (KR)
Title: 트리플 죠를 구비한 공압 바이스
IPC: B25B1/24
Filed: 2019-03-29
Granted: 2020-11-26
Abstract: 본 발명은 다양한 형태의 공작물을 공압을 이용해 쉽고 안전하게 고정할 수 있는 트리플 죠를 구비한 공압 바이스에 관한 것으로, 일측 출몰공을 갖는 배럴부, 상기 배럴부의 일측단에 연결된 제1 공압유입구, 상기 배럴부의 타측단에 연결된 제2 공압유입구를 구비한 실린더 바디; 상기 배럴부에 끼워져 각 공압유입구의 공압 공급에 의해 전후진하는 작동판, 상기 작동판의 일면에 결합되어 상기 출몰공으로 출몰하는 샤프트, 상기 샤프트의 일측단에 결합되고 방사상으로 배열되는 3개의 작동부와 각 작동부의 양측면에서 돌출된 가압돌기를 구비한 헤드를 포함하는 피스톤; 상기 출몰공을 중심으로 상기 3개의 작동부에 대응하도록 방사상으로 배열된 3개의 가압 죠로 구성되되, 각 가압 죠에는 상하측 사선방향으로 경사지게 형성되어 각 가압돌기가 슬라이딩 결합되는 슬라이딩홈을 구비하여, 상기 피스톤의 전후진에 따라 가압 죠들이 동시에 전후진하여 가압 죠들 사이에 위치하는 공작물을 고정시킬 수 있는 척킹유닛;를 포함하는 트리플 죠를 구비한 공압 바이스에 관한 것이다.
Patent KR-101995313-B1 (KR)
Title: Piercing pin fixture with improved fixation and manufacturing method thereof
Inventor: IM U SAM
IPC: A44C7/00
Filed: 2019-04-04
Granted: 2019-07-02
Abstract: The present invention relates to a method for manufacturing a piercing pin fixture with improved fixation and a piercing pin fixture manufactured thereby and, more specifically, to a piercing pin fixture with improved fixation capable of fixing a piercing pin and a fixture more effectively as a ring groove-shaped fixing groove is formed on the piercing pin along the outer circumference surface of a fixed position and a fixing bump inserted into and coupled with the fixing groove is formed in the fixture to couple each other, and to a manufacturing method thereof. A piercing pin fixture with improved fixation according to an embodiment of the present invention comprises: a piercing pin having a ring groove-shaped fixing groove is formed along the outer circumference surface behind a position where the piercing pin is inserted into an earlobe; and a fixture inserted into the fixing groove of the piercing pin and having an elastic support unit supporting the piercing pin by elasticity.
Patent KR-102043242-B1 (KR)
Title: System for preventing external leakage from mechanical seal
Inventor: LIM DUCK JAE
IPC: F16J15/16
Filed: 2019-04-09
Granted: 2019-12-03
Abstract: The present invention relates to an external leakage preventing system of a mechanical sealing arrangement, and comprises: an assembly in which a rotation machine is disposed therein; a sealing device including a rotation unit coupled to a rotary shaft of the rotation machine to rotate with the rotary shaft and a stop unit disposed to form a gap with the rotation unit, and allowing a lubricating oil to be supplied to the gap between the rotation unit and the stop unit; a lubricating oil storage tank disposed inside the assembly to store the lubricating oil therein; and a lubricating oil flow path capable of supplying the lubricating oil to the sealing device while connecting the lubricating oil storage tank and the sealing device.
Patent KR-102224650-B1 (KR)
IPC: C04B38/10
Filed: 2019-04-16
Granted: 2021-03-09
Abstract: 미세먼지 및 대기 전구물질 저감 효율성이 우수하고, 투수성이 향상되고, 투수블록의 조립성 및 하중에 대한 내구성이 향상되고, 유지관리가 용이한 투수블록이 개시된다. 본 발명은 기포 콘크리트 골재; 상기 기포콘크리트 골재를 담는 키트; 및 상기 키트가 삽입되고, 유입수 저장부가 형성된 프레임;을 포함하는 대기 중의 전구물질 흡착과 제거가 가능한 투수블록을 제공한다.
Patent KR-102221795-B1 (KR)
IPC: C08K5/13
Filed: 2019-04-17
Granted: 2021-03-03
Abstract: 본 발명은 본 발명은 에폭시 도료 조성물용 첨가제에 관한 것이며, 보다 상세하게는 스티렌네이티드 페놀, 에폭시화 대두유(Epoxizied soybean oil) 및 피마자 오일(Castor oil)을 포함하는 에폭시 도료 조성물용 첨가제 및 이를 이용한 우수한 작업성을 가지는 에폭시 도료 조성물에 관한 것이다.
Patent KR-102140947-B1 (KR)
Title: Bipartite Continuous Drive Type Projection Traffic Lane Painting Construction Apparatus
Inventor: LEE JONG O
IPC: E01C23/20
Filed: 2019-05-08
Granted: 2020-08-04
Abstract: The present invention relates to a bipartite continuous driving type projected traffic lane construction apparatus. More specifically, in order to efficiently improve constructability while flexibly controlling a distance between projected traffic lanes by fusing projected traffic lanes of different numbers and arrangement positions on the surface of a road through a bipartite continuous driving method, the apparatus includes: a body part forming a paint supply channel receiving paint from the outside, including a guide channel vertically penetrated corresponding to the paint supply channel, and forming an outlet connected to the bottom of the guide channel to discharge the paint; and a discharge driving part including a support frame which is installed in an upper part of the body part and forms a driving space therein, and a discharge driving unit which is installed on the support frame in a front and rear symmetry structure, is elevated vertically corresponding to the guide channel of the body part and discharges the paint towards the outlet. The discharge driving unit of the discharge driving part includes: a first discharge driving unit installed on the support frame while being located in front and repetitively elevated vertically corresponding to the guide channel located in front of the body part; and a second discharge driving unit installed on the support frame while being located behind the first discharge driving unit, and repetitively elevated vertically corresponding to the guide channel located behind the body part.
Patent KR-102155448-B1 (KR)
Title: Polarization modulator with switching signal generator for liquid crystal panel and controlling method for the same
Inventor: JUNG YONG BI
IPC: G02F1/29
Filed: 2019-05-10
Granted: 2020-09-11
Abstract: A polarization modulator disclosed in the present specification includes: a first polarization modulator which converts incident light into first polarization; a second polarization modulator which converts the incident light into a second polarization which is different from the first polarization; a control unit for outputting a switching signal for alternately driving the first polarization modulator and the second polarization modulator; a sync input unit which receives a sync signal from a projector; and a memory unit which stores a dark time interval of image data and sync interval data related to the sync signal, wherein the control unit may output the switching signal based on the sync interval data, thereby capable of matching the dark time of the projector.
Patent KR-102074890-B1 (KR)
Inventor: KWON YOUNG HUN
IPC: H04B10/70
Filed: 2019-05-15
Granted: 2020-02-07
Abstract: According to one embodiment of the present invention, provided is a sequential state discrimination apparatus which comprises: a transmission unit transmitting an initial quantum state which is one of two coherent states with a predetermined probability; a first measurement unit measuring a coherence state of the initial quantum state using non-optimal unambiguous discrimination (UD) and transmitting a post-measurement state of the measurement; and a second measurement unit measuring the transmitted post-measurement state using optimal UD.
Patent KR-102031772-B1 (KR)
Title: Air Cleaning Apparatus
Inventor: KO MYONG KUN
IPC: A61L9/20
Filed: 2019-05-16
Granted: 2019-10-14
Abstract: The present invention relates to an air cleaning device capable of maintaining indoor air in a clean state by removing contaminated matter or dust in the indoor air and discharging the clean air. According to the present invention, the air cleaning device has a first filter space discharging the inducted air to the lower side after the inducted air passes through three filters installed in a zigzag pattern. The first filter space can be attached and detached from the inner side of a body. In addition, the first filter space includes: a vibration motor for dust removal; and a dust collection box collecting the dust. A slow space reducing the speed of airflow is formed in the rear of the first filter space. The air cleaning device also has a second filter space including the filter filtering fine dust and dust in the air passing through the slow space. The filter can be replaced by opening a door on a side of the body. The air cleaning device also includes a third filter space for the air passing through the second filter space to pass through a photocatalytic filter. The air cleaning device also includes a fourth filter space including the photocatalytic filter for the air passing through the third filter space to pass through the fourth filter space.
Patent KR-102084670-B1 (KR)
Title: Air burst projectile bomb and bursting signal transfer device for air burst projectile bomb
Inventor: SON DE RAC
IPC: F42C9/14
Filed: 2019-05-23
Granted: 2020-03-04
Abstract: The present invention relates to an air explosive bomb and an air explosive signal transmission apparatus. While the air explosive bomb passes through a cylindrical body of the air explosive signal transmission apparatus, an explosion control system inside the air explosive bomb simply signals the distance to an explosive bomb explosion location. Therefore, it is possible to automatically and easily input distance information to the explosion location of the air explosive bomb into the air explosive bomb by using the air explosive signal transmission apparatus.
Patent KR-102041893-B1 (KR)
Inventor: CHO CHOON YOUNG
IPC: H01R4/66
Filed: 2019-05-24
Granted: 2019-11-07
Abstract: The present invention relates to an arrester terminal coupling device for a substation, capable of strongly maintaining the position of a lead wire. According to the present invention, the arrester terminal coupling device for a substation comprises: a fixing plate coupled to the upper surface of an arrester by a bolt; an adjuster rotatably coupled to the inner diameter of a coupler; the coupler including a pressing protrusion adjusting the coupling between a coupling groove and a coupling protrusion; and a cover including a plurality of pressing protrusions formed in the inner diameter, which is formed corresponding to the upper surface of the adjuster, to press the upper surface of the adjustor.
Patent KR-102098314-B1 (KR)
Title: Method for manufacturing heating mattress pad
Inventor: YU JI SUN
IPC: A47C27/15
Filed: 2019-05-31
Granted: 2020-04-07
Abstract: Provided are a heating mattress pad with the low risk of fire and a manufacturing method for the same. The manufacturing method for a heating mattress pad includes: i) a step of coating a first thermosetting adhesive layer having a thickness of 150-200 μm on a first surface of a first fabric; ii) a step of coating a second thermosetting adhesive layer having the thickness of 150-200 μm on a second surface of a second fabric; iii) a step of providing a heating body between a first adhesive film and a second adhesive film; and iv) a step of providing an insulation matrix enclosing the heating body by pressing and compressing the first adhesive layer, the second adhesive film, and the heating body at the temperature of 130-180°C in the direction vertical to the first surface and the second surface. In the step of providing the heating body, the heating body includes: i) a pair of metal electrodes connected to an external power source to receive electric power, stretching lengthwise in a first direction, and separated from each other; ii) a plurality of carbon fibers stretching lengthwise in a second direction crossing the first direction and connecting the pair of metal electrodes to each other; and iii) a plurality of threads stretching lengthwise in the first direction and woven by being crossed with the plurality of carbon fibers. In the step of providing the insulation matrix, the first adhesive film and the second adhesive layer are fused to be formed without air holes by being connected to each other in a separation space between the plurality of carbon fibers and the plurality of threads. The insulation matrix comes in direct contact with the plurality of carbon fibers to insulate the plurality of carbon fibers from the outside.
Patent KR-102283109-B1 (KR)
IPC: B82Y35/00
Filed: 2019-06-04
Granted: 2021-07-29
Abstract: 다전자 전자 여기를 통한 나노 소자의 비평형 전자구조 시뮬레이션 방법 및 그 장치가 개시된다. 본 발명의 일 실시예에 따른 나노 소자의 비평형 전자구조 시뮬레이션 방법은 제1 원리(first principle) 및 상위 근사 계산 방법에 대한 정보와 나노 소자의 원자 구조에 대한 정보를 기반으로 상기 나노 소자의 채널, 제1 전극 및 제2 전극 각각의 영역 정보 및 인가 전압 정보를 수신하는 단계; 상기 제1 원리 및 상위 근사 계산 방법을 통해 생성된 파동함수들을 공간 분포에 기초하여 상기 나노 소자의 채널, 상기 제1 전극 및 상기 제2 전극 각각의 영역으로 분류하는 단계; 상기 분류된 영역 정보와 상기 인가 전압 정보에 기초하여 상기 채널, 상기 제1 전극 및 상기 제2 전극 각각의 전기화학포텐셜에 따른 페르미-디락 분포 함수를 생성하는 단계; 상기 채널, 상기 제1 전극 및 상기 제2 전극 각각의 영역 정보에 해당하는 페르미-디락 분포 함수 및 상기 분류된 각 영역의 파동 함수들을 이용하여 상기 나노 소자의 비평형 전자 밀도를 계산하는 단계; 및 상기 계산된 비평형 전자 밀도에 기초하여 상기 나노 소자의 비평형 전자 구조 정보를 획득하는 단계를 포함한다.
Patent KR-102199363-B1 (KR)
Title: 속성 스위치를 이용한 조명 제어 장치 및 방법
IPC: H05B44/00
Filed: 2019-06-04
Granted: 2021-01-06
Abstract: 본 발명은 조명 제어 장치 및 방법에 관한 것으로서, 사용자로 하여금 조명의 속성을 용이하게 변경할 수 있도록 하는 속성 스위치를 이용한 조명 제어 장치 및 방법에 관한 것이다.
Patent KR-102076747-B1 (KR)
Inventor: KIM YI TAE
IPC: F16H7/08
Filed: 2019-06-05
Granted: 2020-02-12
Abstract: The present invention relates to a mobile rack including a drive unit with adjustable tension and, more specifically, to a mobile rack including a drive unit with adjustable tension, which in a chain for transmitting power while constituting the drive unit of the mobile rack, can move a first tension adjustment unit or a second tension adjustment unit by a predetermined distance to prevent generation of noise or unstable power transmission during movement of the mobile rack as the chain for transmitting power is loosened and deformed when the mobile rack is used for a long period of time. Accordingly, tension of the chain can be adjusted to enable power transmission.
Patent KR-102029310-B1 (KR)
Title: Liquid manure outflow apparatus
Inventor: YU HAE YEOL
IPC: A01B13/02
Filed: 2019-06-12
Granted: 2019-10-07
Abstract: The present invention relates to an apparatus for feeding a liquefied fertilizer underground, and more specifically, to an apparatus for feeding a liquefied fertilizer underground, which is configured to feed a liquefied fertilizer underground while a farmland is cultivated by a cultivator. To this end, the apparatus comprises: a frame towed by a tractor; a hose reel mounted on the frame to wind a liquefied fertilizer hose; a distribution unit disposed at the rear of the frame and including a plurality of nozzles disposed corresponding to cultivation units; a feeding pipe rotatably coupled to the distribution unit and having the liquefied fertilizer hose coupled thereto to receive a liquefied fertilizer from a liquefied fertilizer tank located in a remote distance and accommodate the received liquefied fertilizer in the distribution unit; the plurality of cultivation units installed in the width direction at the rear of the frame to be able to rotate in a vertical direction, wherein rotation of the cultivation units in an upper direction is elastically supported by an elastic body; and a liquefied fertilizer discharge pipe having one side coupled to the nozzles of the distribution unit and the other side fixed to the rear of the cultivation units, and feeding the liquefied fertilizer discharged through the nozzles of the distribution unit underground.