초록 ▼

○ 연구개발결과
1세부과제
* 휠체어 리프트 유압전자제어장치 설계및제작
* 기구부와 합성
* 버스개조 빛 기구부 및 유압전자제어장치 장착
2세부과제
* 휠체어리프트 기구부 상세설계, 구조해석
* 휠체어리프트 기구부 시작품 제작
* 기구부와 유압전기장치 통합 및 리프트 장착
* 강도, 성능, 내구성 시험 실시 검증
3세부과제
* 휠체어 고정장치 설계 및 시제품 제작
* 휠체어 이용 장애인을 위한 안전벨트 lay-out 설계
* 버스내 휠체어 고정장치 및 안전벨트 장

○ 연구개발결과
1세부과제
* 휠체어 리프트 유압전자제어장치 설계및제작
* 기구부와 합성
* 버스개조 빛 기구부 및 유압전자제어장치 장착
2세부과제
* 휠체어리프트 기구부 상세설계, 구조해석
* 휠체어리프트 기구부 시작품 제작
* 기구부와 유압전기장치 통합 및 리프트 장착
* 강도, 성능, 내구성 시험 실시 검증
3세부과제
* 휠체어 고정장치 설계 및 시제품 제작
* 휠체어 이용 장애인을 위한 안전벨트 lay-out 설계
* 버스내 휠체어 고정장치 및 안전벨트 장착
* 휠체어 사용 않을 경우를 위한 접이식 시트 개발

Abstract ▼

We planned to design and produce the wheel chair lift, safety belt, and wheelchair locking equipment for the handicapped and the elder using the public transportation bus. There are three major subjects to do the whole works for two years(from October 10f 1998 to September 30 of 2000). The titles of

We planned to design and produce the wheel chair lift, safety belt, and wheelchair locking equipment for the handicapped and the elder using the public transportation bus. There are three major subjects to do the whole works for two years(from October 10f 1998 to September 30 of 2000). The titles of three subjects are as follows.
Subtitle 1: Development of hydraulic and automatic control system for the wheelchair lift, and system integration
Subtitle 2: Development of the wheelchair lift body
Subtitle 3: Development of safety belt and wheelchair locking system
We did design and manufacture the proposed proto-type successfully, In next year, this developed proto-type wheelchair lift and safety locking system will be commercialized by Samjoo Machinery Corporation. Samjoo Machinery Corporation keeps on trying to contact the Original Equipment Manufacturer for obtaining partnership to expand the market. It can be expected that it will make an effect of saving cost from replacing the imported lift systems with currently developed ones.
Subtitle 1: Development of hydraulic and automatic control system for the wheelchair lift, and system integration
We planned to design the electronic and e1ectrical contro1 circuit to operate two hydraulic cylinders and a e1ectrica1 motor for power source of whee1 chair lift. We checked the who1e process to use the lift for the whee1 chair user to access inside and outside a public transportation bus.
We made the computer program to run the algorithm by C language. And, we integrated the power control system with a lift main body by mounting sensors and hydraulic cylinders and pump, e1ectrica1 motor, etc. on the lift frame.
Then, this integrated wheelchair lift system was installed to a bus by cutting the middle plane of stairs in the back door and by fixing to the base frame with six brackets. The running sequence and movement of wheelchair lift system was tested by operating the power control system and by adjusting the knob of hydraulic va1ve. For the emergency case of electric power loss, the wheelchair lift system was operated manually and it was confirmed that the whole system run safe1y without any problem.
Subtitle 2: Development of the wheelchair lift body
The main body of drawer-type wheelchair lift including frame, linkage, platform, bridge plate, and barrier plate was designed.
3D Working Model Simulation and finite element structural analysis confirmed the movement of lift parts and strength of frames.
A proto-type wheelchair lift was manufactured, and hydraulic and electrical equipments were assembled. Then, this integrated proto-type was installed under a bus by cutting the middle plane of stair and by fixing it with six brackets.
During the operation of this integrated proto-type wheelchair lift system, the strength and durability of lift frame were inspected by measuring the deflection under overload application. The test results met the regulations of American with Disabilities(ADA) Accessibility Guidelines.
Goals of this project were successfully achieved .
Subject 3: Development of safety belt and wheelchair locking system
There are three categories in safely fixing the handicapped with wheelchair inside a bus as follows:
Category 1: Safety system by using only belts
Category 2: Seat belt and wheelchair frame locking system
Category 3: Seat belt and wheelchair wheel locking system
Among them the category 3 was selected in the viewpoint of safety and feasibility. For the seat belt, a commercial ELR sear belt was adopted, and it was installed on the side wall inside a bus with meeting the safety belt and anchorage regulations. In order to protect backward movement of wheelchair, bar frames were mounted on the floor and side wall behind the location of wheelchair lock.
The wheelchair wheel locking system, consisting an electrical linear actuator, chain connection, sliding plates, and wheel grasping pins, was designed to cover the various size of wheel and manufactured. In the emergency case of electric power loss, plates and pins grasping a wheelchair wheel can be manually moved by separating a connecting pin.
This developed proto-type wheelchair wheel locking system was mounted on the bus floor near the side wall under a folding chair.
The function of seat belt and locking system was checked when the handicapped with wheelchair riding a public transportation bus operated it. It was confirmed that the whole system ran safely and properly.

목차 Contents

• 표지 ... 1
• 연구개발 최종보고서 ... 2
• 제 출 문 ... 3
• 요약문 ... 4
• SUMMARY ... 8
• 목 차 ... 12
• 제 1 장 서 론 ... 13
• 1. 연구개발배경 ... 13
• 2. 연차별목표 ... 13
• 3. 활용성 ... 14
• 제 2 장 국내·외 기술개발 현황 ... 15
• 1. 국내외 연구 및 개발현황 ... 15
• 2. 자료조사 및 분석 ... 15
• 제 3 장 연구개발수행 내용 및 결과 ... 38
• 제1절 제1세부과제: 리프트 자동유압장치 개발 및 시스템 통합작업 ... 38
• 제2절 제2세부과제: 장애인 휠체어 리프트 기구부 개발 ... 49
• 제3절 제3세부과제: 안전벨트 및 자동고정장치 개발 ... 70
• 제4절 서랍형 휠체어 리프트, 고정장치, 및 안전벨트 구연 ... 89
• 제 4 장 연구개발목표 달성도 및 대외기여도 ... 97
• 가. 연구개발목표의 달성도 ... 97
• 나. 상기평가의 착안점에 따른 목표 달성도에 대한 자체평가 ... 98
• 다. 대외기여도(관련분야의 기술발전에의 기여도 등을 기술) ... 98
• 제 5 장 연구개발결과의 활용성과 및 계획 ... 99
• 가. 계량적 성과 ... 99
• 다. 활용결과 및 계획 ... 100
• 제 6 장 기타 중요변경사항 ... 101
• 제 7 장 참고문헌 ... 102
• 부록 ... 103
• [A] Computer Program ... 104
• [B] 전자제어장치 부품 ... 111
• [C] 유압실린더 ... 139
• [D] 베어링, 레일, 체인 ... 147
• [E] 기계요소부품 ... 159
• 끝페이지 ... 168