Claims:The scope of the invention is defined by the following claims:

Claim:
1. A semi-automatic child retraction mechanism comprising:
a) A vacuum cup (1) attached to an optical camera (2) mounted on a base plate (3) with the help of a mounting assembly.
b) A cylinder assembly (4) on baseplate (3) is connected to a mechanical rotating arm which is operated by a linear actuator (6) and a bilinear actuator (5).
c) The life supporting system was present in between the cylinder assembly (4) and bilinear actuator (5).
2. As mentioned in claim 1, the victim head was rigidly hold with the help of vacuum cup. The appropriate pressure was maintained in the vacuum cup based on ergonomic data without causing physical damage to the victim.
3. According to claim 1, cylinder assembly will act as casing for the sub systems present in the retracting mechanism.
4. As per claim 1, optical camera is used to monitor the whole operation which is operated by the control unit interfaced with the computer.
5. As per claim 1, bilinear actuator is responsible for rotating motion whereas linear actuator is used for to and fro motion. Bilinear actuator also helps to balance the effect of twist due to inertia produced by victim’s mass. , Description:Field of Invention
The present invention pertains to rescuing child from bore hole or small gap using semi-automatic retraction mechanism.
Background of the Invention
Narrow holes in the ground constructed by a drilling machine in order to gain access to the groundwater system are called as bore well/hole. Boreholes are usually narrow (typically 150 mm (6 inches) in diameter) and can be constructed quickly. Modern drilling machines uses compressed air to drive a rotating hammer that smashes up the rock. The air exhaust from the hammer tool blows the broken rock chips and water in the hole, up to the ground surface. The unwary child can be trapped in the uncovered dry bore holes.
The researchers across the globe working on to invent machine/setup to rescue trapped child safely from the bore holes. For instance US10765896B2 discloses the operation of rescue device comprising support assembly, a seating assembly and a gripper assembly. The support assembly includes two holding arms configured to hold the victim. The seating assembly includes an extendable seat rod and a seat attached at an end of the extendable seat rod. The seat is configured to move relative to the extendable seat rod in order to facilitate positioning of the seat relative to the victim. The gripper assembly includes a gripper that is configured to facilitate positioning of the victim relative to one or more of the support assembly and the seating assembly. The drawback noted in this mechanism is taking lot of time for rescue operation because of the presence of subsystems such as support system, seating system and gripper system. In US10857401B2 disclosed a mechanism to rescue victim trapped in a well. The well rescue device includes a clamp assembly configured to provide support to a torso of the victim while moving the victim. Additionally, the well rescue device includes a seat assembly configured to provide seating support to the victim. If the bore well hole is small then it will be challenging to operate seat assembly system.
As per the record released by fire rescue team with the existing retraction procedure the whole operation will take approximately 11 hours. The same problem was noted in most of the prior art (US20150306434A1). Accordingly, there is an urgent need for an improved bore well rescue device to rescue victim within a short term time period effectively. The present invention overcome these problems observed in the prior art and discloses herein the operation of bore well rescue device devoid of the above mentioned drawbacks.
Summary of the Invention
In light of the above mentioned drawbacks in the prior art, the present invention aims to rescue victim from bore well/small hole effectively within a short time period.
The specific objective of the invention is to design semi-automatic mechanism for bore well rescue with all life supporting systems for the trapped victim.
A further specific objective of the invention is to design a simple retracting mechanism without much complicated subsystems capable to operate even inside small holes.
Brief Description of Drawings
The invention will be described in detail with reference to the exemplary embodiments shown in the figures wherein:
Figure 1 Semi-automatic retracting mechanism.
Figure 2 Retraction position
Detailed Description of the Invention
The embodiments of the present disclosure provides a semi-automatic retraction mechanism which rescues the child from the bore well/ small hole. Semi-automatic retraction mechanism was designed based on the following criteria, i) Disaster management. ii) Bore well fishing.
With reference to the figure 1 the ‘Semi-automatic retraction mechanism’ is provided in accordance to an embodiment of the present disclosure. The setup fabricated was a functional prototype; it is developed to evaluate the major systems of the mechanisms in real time. The setup was used to carry out basic functionality tests such as vacuum cup (1) to pull up the child is attached with a base plate (3) to control the movement of the mechanical arm in all the degrees of freedom. A solid mushroom cup is used in the vacuum system for holding the child as the particular component is used in the medical field for the very same purpose. It is used in pulling out the child in a vacuum assisted delivery.
An optical camera (2) is provided to position the child while retracting from the hole. The mechanical arm will be operated by linear actuator (6) interfaced with bi linear actuator (5) which provides rotational degree of freedom to the whole system. The outer cylinder assembly (4) was provided to fix the mechanism rigidly. In accordance to an embodiment of the disclosure, semi-automatic retraction mechanism with retraction position is shown in figure 2.
The vacuum cup (1) is one of the major highlights of the proposed mechanism but at the same time it may inflict permanent physical damage to the child. A static force analysis was carried out using ANSYS to ensure the safety of the attached vacuum cup (1) system. If excessive suction is deployed, it may cause a pull out of skin from the skull. The static force analysis was done for lifting a child weighs 10kg. An appropriate pressure of 0.2 bar was applied as load with bottom of the skull is fixed, resembling the neck joint. The density of the skin considered as 1000kg/m3, young’s modulus 16.7 MPa and the Poisson’s ratio 0.42. The deformation in excess of 0.2cm may cause fatal for the child. In the proposed invention attained deformation was 0.02mm which is very much safe.
5 Claims & 2 Figures
Equivalents
The semi-automatic child retraction mechanism from bore well of the present invention discloses its usage in terms of rescuing victim from bore well. The same operation/mechanism may be used to rescue victim from small holes. The scope of the invention was not limited to its usage as semi-automatic child retraction mechanism from bore well.