Recently, after pondering a way to level out long workpieces when working with my small bench drill, i came up with a rough design for what would ultimately become this nifty little gem. Scissor or toggle jack a toggle or scissor jack is a device which lifts heavy equipment. Mar 11, 2015 the completed solidworks design of the scissor jack and its members shown in figure 2. Jack that this piece of equipment will meet your expectations in quality and performance. The deformation of the screw jack in y direction 2. This jack is mostly used in cars for the remove the tyres we have designed. Pdf design and standardization of scissor jack to avoid. The position of this actuator, however, can affect the mechanical advantage and velocity ratio of the system. A scissor jack is a mechanical device used to lift a heavy vehicle from the ground for changing the wheel and for maintenance purpose.
Introduction the most basic scissor jack design is truly engineering at its finest. The best part of having a scissor jack is the compact design. Pdf a scissor jack is a mechanical device used to easily lift a vehicle off the. By using thickness and inside diameter, we can calculate the outer diameter of plunger cylinder d p d p. Design and analysis of scissor jack full report download.
The end fits into a ring hole mounted on the end of the screw, which is the object of force on the scissor jack. The computeraided design cad files and all associated content posted to this website are created, uploaded, managed and. Jacks employ a screw thread or hydraulic cylinder to apply very high linear forces. A distinctive feature of an electrohydraulic scissor lift in comparison with other analogues is the low price due to the use of a relatively simple design. Kansas city, mo 64153 phone 18168916390 90 days limited warranty for a period of. How to make your own diy scissor lift with plans woodwork. In the remaining sections the design issues listed above are discussed. Design and fabrication of motorized automated object lifting jack. Product title zimtown 2 ton scissor jack heavy duty folding design lift car tire repair lift tool average rating. Design analysis of scissor jack free download as powerpoint presentation. The design is based on 3d software proe with 8m high scissors lift platform. Here is another model for catia learners, scissor jack. Scissor jack is used to lift the heavy loads in which rotary motion is converted into linear motion. Design and analysis of scissor jack full report downloadmechanical project introduction mechanical jack a jack is mechanical device used to lift heavy loads or apply great forces.
Light in weight and small in size, it can be easily stored in the trunk of your vehicle. Instead of waiting around for help to arrive, you can change that flat tire yourself in only a few minutes, see whether you hit something that damaged the wheel or be a good samaritan yourself. Detailed design procedure of a quick lifting screw jack is presented in this paper. The cost of jack is a major concern and has forced people to look for alternative jacks that are available abundantly and are cheaper and compact. The extension is achieved by applying pressure to the outside of a set of supports located at one end of the lift, elongating the crossing pattern. The position of this actuator, however, can affect the mechanical advantage and velocity ratio of. Pdf design and analysis of scissor jack firaol asefa.
Design and standardization of scissor jack to avoid field. Scissor jack 1 12 ton capacity american made order on line or call 800 535 2257. Designing and calculating the stresses induced in scissors jack. The ground clearance of the car is assumed to be 165 mm after observing various cars specifications. Pdf design and standardization of scissor jack to avoid field. Sep 08, 2015 design and fabrication of a power scissor jack 1. Ironton 1ton steel manual scissor jack northern tool. If some details appear less bright than others, remove lights and scrape more flesh from inside using fleshing tool. In this work we have designed different components of scissors. The computeraided design cad files and all associated content posted to this website are created, uploaded, managed and owned by third party users. Fasten the threaded rod to one of these using 2 of the 10mm washers and the 2 10mm lock nuts, as shown to the left of the above image. The most common form is a car jack, floor jack or garage jack which lifts vehicles so that maintenance can be performed.
In this step, you will drill 10mm holes in the center of the 2 e components to accommodate the 10mm threaded rod. Mohammed department of mechanical engineering university of mines and technology, tarkwa, ghana. A mechanical jack is a device which lifts heavy equipment. The free end of the scissors legs are fitted with rollers that run in the base. Comparing mathematical model of scissors jack analytically and by. Amongst these alternatives available, scissor jack is widely used for lifting vehicles.
Nikam4 1,2,3 department of mechanical engineering, savitribai phule pune university, amrutvahini college of. Most scissor jacks are similar in design, consists of four lifting arms, a base plate, a carrier plate, two. When this crank is turned, the screw turns, and this raises the jack. The following paper describes the design as well as analysis of a hydraulic scissor lift. Figure 1 shows the design of automatic car jacker where. Car jacks usually use toggle advantage to allow a human to lift a vehicle by manual force alone. Design of power screw and side members is as follows. This design looks like it will serve my exact needs. Bacon 4 scissors lift platform with electronic controlarturo valencia ochoa jaime antonio uribe.
Design details of jack the total height of the screw jack 276 mm. A scissor jack is mechanical equipment used to lift up. Conventionally a scissor lift or jack is used for lifting a vehicle to change a tire, to gain access to go to the underside of the vehicle, to lift the body to appreciable height. A special lifting platform is driven by a simple metal structure with levers that look like scissors connected with others in a long chain. Also notice that none of the possible reaction moments at the joints are shown. Step 3 height adjustment mechanism e component preparation. In this paper, a unique design of scissor jack is compile to lift low. Hydraulic scissor lift tables are comprised of five major components. These forces are omitted because they are equal and opposite the forces at the bottom of the previous scissor, and therefore are not unique. The different alternatives available are like scissor jack, hydraulic jack, pneumatic jack, floor jack, etc. The husky 1 12 ton scissor jack is the perfect emergency roadside assistance jack. The design is fundamentally a modification of the conventional scissor jack. Design and fabrication of power scissor jack a project report submitted in partial fulfillment of the requirements for the award of the degree of bachelor of technology mechanical engineering submitted to kl university by s.
Conventionally a scissor lift or jack is used for lifting a vehicle to change a tire, to gain access to go to the underside of the vehicle, to lift the body. The products compactly designed with dimensions of 42 x 10 x 4,5 cm making it easy to store or transport. Scissor jack design project free download as word doc. Scissor lift jack force bottom load calculator engineers. The completed solidworks design of the scissor jack and its members shown in figure 2. Members 1 and 5 both have additional details to account for the contact surfaces. Design and analysis of hydraulic scissor lift by fea. Step 7 to add hands size clockhands template as needed. Members 1 through 8 are all primarily cshapes with ideal pin connections.
Pl140601 hanperal car steel tire wheel lug wrench scissor jack crank speed handle lift tool. Hello friends welcome to nes learning hope you are doing well. For a project i need to calculate the forces in the arms of scissors lift. I had considered using some sort of auto scissor jack as a lifting mechanism, but think that you design will serve the purpose equally as well without attempting to find the center point to mount the scissor jack. Catia v5v6 tutorial car jack scissor jack design step. Pdf modified screw jack for lifting operation in industrial. When you need to change a tyre or lift your vehicle for any other reason, this scissor jack will lift up to 1. Scissor jack definition is a powerful lifting jack operated by a screw in horizontal position that lengthens or shortens the horizontal diagonal of a parallelogram consisting of the linkages of the jack. The most important fact of a jack is that, it gives the user a mechanical advantage by changing the rotational motion into linear motion and allowing user to lift a heavy car to the require height. Scissor lift design calculations pdf scissor lift design is used because of its ergonomics as compared to other. A scissor jack is mechanical equipment used to lift up heavy loads. No tools required, no loose components or separate parts. The type of switch that is used is known as a toggle switch.
It was first used to define the limit of travel of an object, hence the name limit switch. The extrawide base offers easy positioning and the onepiece handle delivers onthespot quick response and speed when you need it. Catia is used to develop and analyzed the scissor jack. Notice that the reaction forces at the top of the i and ii scissors are not shown in figure 2. Design and analysis of hydraulic scissor lift by fea sabde abhijit manoharrao1. It would be nice if anyone could check the calculation out whether i made errors or i missed out something. Design and standardization of scissor jack to avoid field failure.
The operation of a scissor jack starts by using a z shaped crank that is. Catia v5v6 tutorial car jack scissor jack design stepby. Design of the toggle jack free download as word doc. Modification of the existing design of a car jack a. Scissor lifts, a staple of mechanical design, especially in competitive robotics, are a type of linkage that can be used to raise a load to some height, when acted upon by some force, usually exerted by an actuator. Proposed design summary the scissor jack design, shown in figure 1, consists of four main lifting members, four connection members, a power screw and a crank. A scissor jack is operated simply by turning a small crank that is inserted into one end of the scissor jack. The operation of a scissor jack starts by using a z shaped crank that is mounted to a small hole on the mechanism. For a scissor lift that has straight, equallength arms, i. The precision threaded shaft means the jack should not lock up as you lift your vehicle. Design and fabrication of motorized automated object. Fits in the larger 26x14x16 envelope, but could possibly wedge into the smaller package diagonally.
The most common industrial lift is the hydraulic scissor lift table. Most scissor jacks are similar in design, consists of four lifting arms, a base plate, a carrier plate, two connection members, eight connection pins, a power screw and a crank. A p p l i e d m echan e ornal of pplied j mechanical. Design of scissor jack is done with proe and model assembly is shown in figures 1 to 3. Design modification and failure analysis of scissor jack. Scissor lift jack force bottom load proof and equations a scissors lift uses linked, folding supports in a crisscross x pattern, known as a pantograph. May 26, 2017 hello friends welcome to nes learning hope you are doing well.
Scissor lift jack equations and loading calculator. Nikam4 1,2,3 department of mechanical engineering, savitribai phule pune university, amrutvahini college of engineering, sangamner. If youve ever used a floor jack, you know that it can be. Design of mechanical hydraulic jack international organization of scientific research 18 p a g e hence the induced tensile strength of m.
Designing and calculating the stresses induced in scissors. This scissor jack is a high quality import distributed by u. Scissor jack definition of scissor jack by merriamwebster. This may seem like a complicated piece of equipment, but in actuality hydraulic lift tables are really very simple in design. The power screw mechanism included in a scissor jack is design to lower the amount of force needed to lift the heavy loads. Mathematical model of design procedure is also made which will suppose to help in standardization of scissor jack design by using matlab. It is called a scissor jack as the structure consists of diagonal metal components that expand and contract in the same way as a pair of scissors. As a lifting force is used electrohydraulic mechanism for driving a pair of scissors in motion 20.
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