Author: Ying

Agency Area: Wuhan Vocational College of Mechanical and Electrical Engineering, Wuhan 430065, China

Source: "OME Information" Section 12 114-115 2014 Page of 2

MechanicalandElectricalInformation

Fund: education of Hubei Province "five" planning issues Project "Study and Practice mechanical innovative education", project number: 2011B318

Abstract: This paper introduces a set of stretchers, beds, strollers in one, can carry, can carry out, do temporary beds, can solve the original can not be folded stretcher, carry inconvenience, it can not be used for flood control and can not give the patient oxygen and other fluids performance multifunction stretcher drawbacks, expand the folded structure and function can be completed, and a more detailed analysis of its mechanical structure.

Keywords: Multifunctional folding stretcher Expand

0 Introduction

Earth's natural variability induced by human activities, including natural variability when no land not happen without this mutation to cause harm to human society is often shocking. After a natural disaster, to escape the scene of the trapped workers and its rescue is a very important issue. To avoid injuries and then by other injuries or to hospital treatment, often need to be transported. Stretcher is an essential tool transporting the sick and wounded in hospitals, mines, military and other industries which is widely used, especially when using very high frequency in the hospital. However, we found that in the course of, existing or no stretcher trolley function can not effort without oxygen and infusion devices, the lack of water rescue facilities; or mostly stretcher, can infusion but not folding down the stairs inconvenient. Therefore, comprehensive above, we learn from the project team and add their own innovation, design a multifunctional stretcher. The stretcher set stretchers, beds, strollers in one, can carry, can carry out, do temporary beds. Solve the original can not be folded stretcher, carry inconvenience, can not be used for flood control and can not give the patient oxygen infusion and other defects.

1 multifunction stretcher System Description

1.1 Performance

Simple multifunction stretcher and reasonable structure, convenient disassembly, with removable quick, easy to carry, small size, light weight, multi-functional characteristics. Material 45 # steel, load about 120kg, temperature is -20~45 ° C, stretchers weight of about 5.2kg, expand the size of 2440mmX920mm, folded size is 1200mmX300mm.

Multifunction stretcher bars mainly by the groove, the cross-brace, handles, caster, infusion pole, infusion sets, oxygen and double canvas bags, seat belts and all kinds of hooks and the like. Long slotted rod as the main part of the stretcher, through six rungs connection between the two long grooves bar; square tube into a stroller when used to support the stretcher body and connected with universal wheel; webs used connecting rod and the handle portion elongated slot; universal wheel carts can be as time-saving device. In the multi-function folding stretcher oxygen bag fixed on the back section, in the framework of the telescopic infusion pole mounted position, the upper and lower sections are provided at the middle of the strap buckle. In addition to basic functions such stretcher transporting patients, but also supports oxygen, infusion, it can be used for both rescue and other field.

Expand section 1.2

Multifunction use stretcher smooth hinge constraint principle, the use of a cylindrical pin hole drilled in the two components are joined to form an intermediate hinge constraint. It characterized by limiting the relative movement of the two members, and only allow relative rotation. 5 combined angular stability, fixed casters and infusion rod bracket. When softened due to the upper portion of the folding force causing the rod and the rod inwardly inclined symmetrical, affecting. To solve this problem, we are close to the upper casters welding a card, punch in the middle. And with a bolt, when softened strut can be set into the card and then tighten the bolts, then it through the card and Bolt the two rods fastened together, so it will not tilt happen.

1.3 folded portion

Bolt connection, both ends of the handle portion of the connecting plate rotate around 90 °, but also about a channel connecting plates rotate 90 °, to achieve channel handle and fold into a stretcher trolley use when the caster rod movement direction is not perpendicular to the groove, This is different for when the caster will be caused by shaking, affect the smoothness of the stretcher. So we set up the juice of 1 small aluminum hook, when turned into carts to transport the wounded can be on the hook buckle fixed to skewer the fixing bolts, then you can guarantee two rod holder 90 °, enhanced stability . When folded can release the hook, the rod can be folded to the right 90 °, does not affect the overall fold.

2 functions to achieve

2.1 Realization stretcher

Stretcher shown in Figure 3, when the rescue injured people lying on a stretcher, two people can lift rescue the wounded.

2.2 carts realization

When the handle portion folded up, wheel landing, then we can move forward the implementation of the wounded, become simple carts, folding force and time saving treatment.