Scissor jack features include rustinhibitive finish on all metal surfaces and universal bolton application. Design philosophy skyjackoducts pr are designed and engineered to be easy to. The car is represented by a one mass flat design model. Figure 3 presents an analysis of the movement of a single story frame with a scissor jack system. When this crank is turned, the screw turns, and this raises the jack. In this work a power scissor jack to lift and support a load of 4. Emil mickael feb 24, 2004, motor driven scissor jack with limit switches, us 6695289b1. Hydraulic jacks are usually rated based on its maximum lifting capacity which could include. Kansas city, mo 64153 phone 18168916390 90 days limited warranty for a period of ninety 90 days from date of purchase, sfa companies will. Scissor car jacks usually use mechanical advantage to allow a human to lift a vehicle by manual force alone.
Design details of jack the total height of the screw jack 276 mm. 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. Design of scissor jack is done with proe and model assembly is shown in figures 1 to 3. One possible way of calculating the reaction forces throughout the lift is to begin at the top of the lift where the applied loads are known, and, using equations of static equilibrium, solve for the reaction forces in the first scissor level 1. Design and standardization of scissor jack to avoid field. The bottom is enlarged, the top steel column can be disassembled 4. Lead brand scissor jack is a fast and laborsaving design, load 1. The power screw design of a common toggle jack reduces the amount of force required by the user to drive the mechanism. Components of the bridge jack requiring special attention were the top sliders and the pins the hydraulic cylinder acts on. In this paper, a unique design of scissor jack is compile to lift low as well as heavy load with different conditions. Design of screws, fasteners and power screws pd s dtan or tan p d d s.
Skyjack aerial work platforms offer the rental industrys best life cycle value through low cost of ownership, ease. Most scissor jacks are similar in design, consisting of four main members driven by a power screw 7 9. The power screw design of a common scissor jack reduces the amount. Jme 4110 mechanical car jack washington university open. Hall 12052005 ii abstract scissor jacks are simple mechanisms used to drive large loads short distances. To find the relationship between force p, called effort, and weight of the body, w, we have to consider the equilibrium of the body on an inclined plane as shown in figures 5. There are three types of shape control which is single draw, split draw and extrusion. Scissor endpin connections showing symptoms of damage must be inspected after removing the applicable pins and bushings. Introduction a scissor jack is a device which is used to lift heavy vehicles, partially or. Original version on the front page of the operation manual supplied with the scissor jack shall be binding. For optional design versions, the use of additional ordering options or the implementation of the latest technical modifications the actual scope of delivery may differ from the descriptions and illustrations in this manual. Car jacks usually use toggle advantage to allow a human to lift a vehicle by manual force alone. Unit 5 design of screws, fasteners design of screws. Pdf design and kinematic analysis of the car jack researchgate.
Pdf a scissor jack is a mechanical device used to easily lift a vehicle off the ground to gain access. 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. The jack will need to be safe, portable, and operated by a single user. Most scissor jacks are similar in design, consisting of four main members driven by a power screw. Of the screwtype mechanisms, there are scissor jacks, common in newer cars, and bumper jacks, common in older cars. A special lifting platform is driven by a simple metal structure with levers that look like scissors connected with others in a. Car jack ullia screw jack is a device by which the heavy load can be. Hydraulic cylinder the most common industrial scissors lifts are actuated by one, two, or three single acting hydraulic cylinders. The scissor bore should also be inspected at this time for any signs of damage, specifically elongation or ovality of the hole. A scissor jack s compressive force is obtained through the.
Scissor jack design project free download as word doc. Unit 5 design of screws, fasteners design of screws, and. Most scissor jacks are similar in design, consisting of four main members driven by. Pdf design and analysis of scissor jack firaol asefa. Step one ensure that your entrance is smooth and clean of dust and. Scissor jack is used to lift the heavy loads in which rotary motion is converted into linear motion. A ratchet wrench see diagram a1 installing your flood gate by following the procedures in the correct sequence, the barrier will take approximately 2 minutes to install in position. A scissor jack uses a simple theory of gears to get its power. Scissor or toggle jacks are one of the best option to overcome this headache. April 25th, 2018 single mechanical scissor jack design application pdf free download here a. Carefully inspect the unit on a regular basis and perform all maintenance as required.
Scissor jack mechanism design wholesale jack alibaba. Scissor jack design project docx document fdocuments. Store these instructions in the handle of your jack. Design philosophy skyjackoducts pr are designed and engineered to be easy to service and maintain. Magnification factorand forces in scissor jack system the effectiveness of the scissor jack con. Design methodology of the main components of the bridge jack is explained below. By keeping design simple and using proven technology, the reliability and ease of service is common to all skyjack products.
Motor or power source most hydraulic scissor lifts are. The length and width of the scissor lift can be changed. Design and fabrication of automated scissor jack ijert. The rear of the sleeve allows access to the scissor jack and lower bolts see diagram c. Most of the toggle jacks are similar in design, consisting of eight main members out of whom four are driven by a power screw and rest of four by loading condition. Scissor legs these are the vertical members that allow the platform to change elevation. One possible way of calculating the reaction forces throughout the lift is to begin at the top of the lift where the applied loads are known, and, using equations of static equilibrium, solve for the reaction forces in the first scissor. Earlier versions have a platform to lift on a vehicles frame or axle. Design and fabrication of automated scissor jack written by mr. Ameetaa scissor jack with hand crankmax 2ton4409 lbs capacity,thickened steel plate black suit for auto,suv,mvp,station wagon,offro. Design, construction and evaluation of an automotive bridge jack. A scissor jack is a mechanical device used to lift a heavy vehicle from the.
Such a threaded screw will have to be turned counter clockwise to engage the mating nut. Sep 08, 2015 the power screw design of a common scissor jack reduces the amount of force required by the user to drive the mechanism. Lead brand scissor jack is a laborsaving design, load 2. We offer complete calculation and sizing up to complete screw jack systems including drive technology. Imagine you work for a company that designs and manufactures scissor lifts, where each scissor lift you design is the same but different. Kansas city, mo 64153 phone 18168916390 90 days limited warranty for a period of. Look for any damaged parts or mechanical problems before using. Abstract scissor jacks are simple mechanisms used to drive large loads. Design and fabrication of power scissor jack screw.
A jackscrews compressive force is obtained through the tension force applied by its lead screw. So that, this design is modified for the existing car jacks in terms of its functionality and human factor consideration. Conventionally a scissor lift or jack is used for lifting a vehicle to change a tire, to gain access to go to the underside. Design a portable car lifting system that will lift all four wheels of a vehicle off the ground a few inches for tire rotations. You save timeconsuming choice of many single components. Carder aug 2, 2011 electric scissor jack apparatus, us79881b1. Scissor or toggle jack a toggle or scissor jack is a device which lifts heavy equipment. A project report on design of hydraulic jack analysis. The car is represented by a onemass flat design model. Design methodology of the main components of the bridge jack is. A remote controlled hydraulic jack is a type of jack. More powerful jacks use hydraulic power to provide more lift over greater distances. A scissor jack is a mechanical device used to lift a heavy vehicle from the ground for changing the wheel and for maintenance purpose.
This device is designed to sustain the following loads at these specified heights. And we are further going to analyze whether it will be suitable for our design. Length of the link considered as the beam for the calculation purpose2100mm. When closed, the arms spread back apart and the jack closes or flattens out again. Our design of the car jack will be implementing an electric motor that will operate the lead screw of the scissor jack. References edward lonnon 1992, motorized jack, us5085407a, feb 4, 1992. A motorized screw jack will eliminate this problem by. A scissor jack is operated simply by turning a small crank that is inserted into one end of the scissor jack. Pdf design and standardization of scissor jack to avoid. Pdf on jan 1, 2008, m m noor and others published development of auto car jack using internal car power find, read and cite all the research you need on researchgate. Literature survey screw type mechanical jacks were very common for jeeps and trucks of. Titan mrl6000 scissor lifts are backed by a standard 1year replacement parts warranty and a 5year structural warranty from the date of purchase, to the original purchaser only. Most scissor jacks are similar in design, consisting of four links driven by a power screw. The 1year replacement parts warranty covers power units, hydraulic cylinders, and all other assembly components such as, but not limited to.
A special lifting platform is driven by a simple metal structure with levers that look like scissors connected with others in a long chain. Design, construction and evaluation of an automotive. Designing and calculating the stresses induced in scissors jack. Hydraulic jacks have the shape of a bottle, or are built into a trolley the floor jack or the like.
The most common form is a car jack, floor jack or garage jack, which lifts. For this optimization, the single draw was used and applied to upper and lower arm. Ge 410 fall 2005 jim ramirez david hettinger instructor. This means a custom design needs to be produced for each sales enquiry or order. The free body diagram clearly shows forces along and. The end fits into a ring hole mounted on the end of the screw, which is the object of force on the scissor jack. In this tutorial, we will be automating the creation of a scissor lift.
Therefore, the needs to reduce weight for a car jack are very important. The jack shown at the right is made for a modern vehicle and the notch fits into a jack up point on a unibody. Design and fabrication of power scissor jack screw machining. A jack is a mechanical lifting device used to apply great forces or lift heavy loads.
The most common form is a car jack, floor jack or garage jack which lifts vehicles so that maintenance can be performed. Design and analysis of scissor jack full report download. For a scissor lift that has straight, equallength arms, i. Preeti jatti published on 20191206 download full article with reference data and citations. The power screw design of a common scissor jack reduces the amount of force required by the user to drive the mechanism. A commercially available scissor jack is shown in figure 1. Material steel ck45 maintained for comparison with previous design. Design began by working with a solidworks model to pinpoint weak spots in the design.
Mar 11, 2015 a commercially available scissor jack is shown in figure 1. In the case of a scissor jack, a small force applied in the horizontal plane is used to raise or lower large load. The deformation of the screw jack in y direction 2. Design and standardization of scissor jack to avoid field failure.
Introduction a scissor jack is a device which is used to lift heavy vehicles, partially or fully in the air for breakdown and maintenance. A mechanical jack employs a screw thread for lifting heavy equipment. On the other hand a right hand screw will be turned clockwise and its helix will appear to. International journal of innovative research in science. In this report, a unique design of a toggle jack is used to.
Often the ideal design solution is not about finding the fastest, sturdiest, most. To reduce the weight of the jack by changing design a nd lift the manufacturability. A scissor jack is mechanical equipment used to lift up heavy loads. The compact size and light weight make it easy to position and handle design makes it an effortless lift. As for scissor jack, there are various design of body jack and it design affects the weight for vehicle when the car is in static or in movement. Thus, the jacks weight difference are connected with different type, design and material used. Pdf development of auto car jack using internal car power. By operating the handle, which is a lever a simple machine, fluid is. Hall 12052005 ii abstract scissor jacks are simple.
The use of high quality materials and a modern manufacturing process ensures that thomson screw jacks will be a reliable precision component in your machine. Scissor jack a scissor jack is a device constructed with a crosshatch mechanism, much like a scissor, to lift up a vehicle for repair. Scissor jacks are simple mechanisms used to drive large loads short distances. The main parts of scissor jack are top plate, bottom plate, arms, trunions and power screw. Scissor lift jack equations and loading calculator. Compact in size, this scissor jack is a compact in size, this scissor jack is a great light weight jack for the garage or carry in your automobile.
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