Learn how to do weight training at home using dumbbells, plus try the provided program to get you started.
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What kid doesn't love to push buttons?! Both of my boys are obsessed with pressing buttons. Whenever we get to ride in an elevator it becomes the highlight of the day. When I saw this simple tutorial for "Pressing the Buttons" over at Toddler Approved, I knew it was something I needed to DIY for
The well-designed Thule Roof Box storage lifts with top-notch build quality can last for a lifetime. They always ensure the safety and security of your stuff;
Dieline is a global package design community and showcase of package design inspiration. We cover industry news, sustainable packaging news, design trends, and host our own packaging conferences, package design events, and Dieline packaging design awards.
Todays little job, design and make a box lifter for a commercial vehicle spares warehouse, used with a crane, the clamps close on the box as the crane...
Lift and carry is one of the most common causes for back injury. This is an area where exoskeletons for work and industry can have a meaningful impact. This is not a new idea and for years exoske…
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An Elevator for My 10'x12' Storage Shed: When the town we live in told me I couldn't replace an old shed with a new, larger one because they had increased our property's setbacks to 20' along the sides and 50' from the water, I was forced to place a much smaller one, closer to our house (I…
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Model of a Lift (Elevator): This is a really fun project to do with kids (or without) to learn about pulley systems and how they work and a fun toy to have at the end of it too! I created the model for 3d printing using Tinkercad but you don't need a printer to recreate this …
We discuss different sleigh bed lift kit mechanisms, alternative methods of lifting a sleigh bed, and retrofitting storage into an existing sleigh bed.
Back pain is common. Many treatments are available for back pain, including Williams flexion exercises.
Download this Forklift Truck With Man Driving Industrial Forklift Vector Design, Packing, Logistic, Lift PNG clipart image with transparent background for free. Pngtree provides millions of free png, vectors, clipart images and psd graphic resources for designers.| 3733406
Dimensions: Height 5'1" Width 23" Depth 22" Wheels 13" Weight Capacity 250lb Weight capacity with rails 300lb Beehive Lifting height 3’8” Suitable for 10/12 frame hives 8 frames hives special order Due to high volume orders our shipping is now 15-20 business days
DIY Attic Storage Assistance : So, it's cleaning season. You want to get rid of old boxes or heavy items and put them in your attic. Instead of breaking your back to store them, why not use a pulley system to lug them up at a fraction of the weight? Inspiration for this Instruct…
Learn how to build an automated bed lift using linear actuators! This project focuses on a tiny house build, helping our customer to save space and head room.
Simple Machine Lift for Kids to Play: My son, loves to play with toy cars..I saw few good toy car parking on internet, made of wood. And decided to make one.... but it is not easy to make or find material to make one. So building it in parts.....This lift can be used in making car parki…
'Think outside the box', bijna letterlijk toegepast. Bij kunst, billboards, verpakkingen, woonaccessoires, advertenties. De voorbeelden...
These sneaky ways of moving can make you prone to back pain, strained muscles, poor posture and more. Learn how to move for good total-body health.
DIY Attic Storage Assistance : So, it's cleaning season. You want to get rid of old boxes or heavy items and put them in your attic. Instead of breaking your back to store them, why not use a pulley system to lug them up at a fraction of the weight? Inspiration for this Instruct…
Karl offers the clean lines and finishing details that we have come to expect from Swedish design. The result is a desirable minimalist parcel box that would perfectly complement any contemporary home. No more parcels left out in the rain with this robust, mailbox! The finishing details include a letter flap that pushes inwards, rather than lifting to make it easier to deliver your post. A separate parcel flap pulls down to receive larger mail. All deliveries slide down into the hold, where they are kept safe and dry until you unlock the door. In terms of security, internal shelves lift as the parcel flap opens. This allows mail to slide, not drop, into the hold and they also prevent anyone from reaching in and removing your parcels. The parcel box is also manufactured from powder coated, galvanised steel so it can stand up to the British weather. Available in a range of desirable colours, this free standing parcel box includes an optional front plate for personalising the post box with your house name or number. Features: Designed & made in Sweden Available in a choice of contemporary Skandi colours Front loading separate letter and parcel opening Powder-coated galvanised steel Twist lock supplied with 2 keys Includes base bolt for fixing into a base Weather-resistant design P-certified in the highest quality class Dimensions: Parcel slot:12 x 29 cm Post box letter slot measurements:5 x 26 cm Parcel box unit measurements:H 103 cm W 34 cm (with roof 40 cm) D26 cm (with roof 31 cm) Weight:16 kg Installation Instructions Please note that the number plate is an optional feature At Letterbox4you all our manufacturers are certified with IS0 9001, which is the international standard that specifies requirements for a quality management system. Our letterboxes are subject to the highest quality procedure and of the highest standard.Letterbox Supermarket brand belongs to Letterbox4you Limited, it's main purpose is to provide easy and quick access to quality, long lasting and secure mailboxes. Most of our products are manufactured in Europe and we select only top quality suppliers to sell their products on our website. All of our products are made of high grade galvanized steel and stainless steel, subjected to meticulous powder coating process and must pass our quality control standard.
Build your own tv lift system using linear actuators. The project is easy to set up. You will need 1 or 2 actuators, gas springs, and creativity.
In the following previous Topics: Basic Elevator Components - Part One Basic Elevator Components - Part Two Elevator Machine and Drive System Elevator Safety System Elevator Control System – Part One Elevator Control System - Part Two I explained all the basic components for the traction elevators (Pull elevators) and today I will explain the basic components of the Hydraulic Elevators (Push Elevators) as follows. You can review the following previous topics for more information and good following. Elevators Types and Classifications – Part One Elevators Types and Classification - Part Two Hydraulic Elevators (Push Elevators) types: Hydraulic Elevators (Push Elevators) types Hydraulic elevators are supported by a piston at the bottom of the elevator that pushes the elevator up. They are used for low-rise applications of 2-8 stories and travel at a maximum speed of 200 feet per minute. The machine room for hydraulic elevators is located at the lowest level adjacent to the elevator shaft. Hydraulic Elevators Types Hydraulic Elevators Types Hydraulic elevators have many two main types as follows: A- Holed (Conventional) Hydraulic Elevators They have a sheave that extends below the floor of the elevator pit, which accepts the retracting piston as the elevator descends. Some configurations have a telescoping piston that collapses and requires a shallower hole below the pit. Max travel distance is approximately 60 feet. B- Hole-less Hydraulic Elevators They have a piston on either side of the cab. It can be divided to 3 different types as follows: a- Telescopic Hydraulic Elevators: In this configuration, the telescoping pistons are fixed at the base of the pit and do not require a sheave or hole below the pit and has 2 or 3 pieces of telescoping pistons. Telescoping pistons allow up to 50 feet of travel distance. b- Non-telescoping (single stage) Hydraulic Elevators: It has one piston and only allows about 20 feet of travel distance. c- Roped Hydraulic Elevators: They use a combination of ropes and a piston to move the elevator. Maximum travel distance is about 60 feet. Hydraulic Elevators components: Hydraulic Elevators components The Hydraulic Elevators will differ from the traction elevator in the following main components: Machine/drive system. Safety system. 1- Machine / Drive system: The lift car shall be driven by one of the following methods: Direct acting. Indirect acting (suspended) hydraulic system in case of using Roped Hydraulic elevator. In case of direct acting system, the hydraulic ram shall be located either at the side, or the back. Unless otherwise specified, direct acting underneath the lift car is not acceptable. The machine/ drive system will include the following components: 1.A plunger/piston/jack The cylinder shall be constructed of steel pipe of a sufficient thickness and suitable safety margin. The top of the cylinder shall be equipped with a cylinder head with an internal guide ring and self-adjusting packing. The plunger/Ram shall be constructed of a steel shaft of a proper diameter machined true and smooth. The plunger shall be provided with a stop electrically welded to the bottom to prevent the plunger from leaving the cylinder. 1.B Hydraulic power unit Hydraulic power unit The power unit shall be generously rated and shall operate with minimum noise and vibration. The unit shall be mounted on vibration insulators above the machine room floor. A silencer unit shall be fitted in the hydraulic system to minimize the transmission of pulsations from the pump to the car and the elimination of airborne noise. The hydraulic power unit consists of the following components: The Tank. Motor/Pump. Valve. Actuator. 1.B.1 The Tank The Tank The tank shall have sufficient capacity to provide an adequate reserve to prevent the entrance of air or other gas into the system. A sight glass tube shall be provided for checking the oil level and the minimum level mark shall be clearly indicated. An oil level monitoring device shall be provided, and if operated, shall maintain a visual and audible signal in the control panel until the fault is rectified. So, the main function of the tank is holding the liquid used in the system, This liquid is usually oil based because: Non compressible. Self lubricating. 1.B.2 Motor/Pump The main function of the pump used in hydraulic elevator is constantly pushing Liquid into the cylinder to lift the elevator, the pump is Submersible type with Variable Speed Valve Leveling. The pump and pump motor shall be mounted on one robust bedplate or within the power unit assembly if it is suitably rigid. The motor pump and bearing(s) shall be so mounted and assembled that proper alignment of these parts is maintained under all normal operating conditions. An oil filter shall be fitted on the pump inlet. A stopcock shall be provided to enable the filter to be cleaned or changed without significant loss of oil. The pump motor shall be of the single speed squirrel cage or slip ring type and it shall run with minimum noise and vibration. 1.B.3 Valve The power unit control valve shall be a variable speed proportional valve type that includes all hydraulic control valving inherently. A stopcock shall be provided between the control valves and the cylinder(s), and also between the reservoir tank and the pump if the pump is mounted outside the tank. The main functions of the Valve are: Lets Liquid out of the system. Keeps the pressure low when open. Increases pressure when closed. This valve shall incorporate the following features: Up and down acceleration and deceleration speed adjustment for smooth starts and stops. Smooth stops at each landing shall be an inherent feature of the valve. Adjustable pressure relief valve. Manually operating 'DOWN' valve to lower elevator in an emergency. Pressure gauge indicating in P.S.I. and Bars. Gate valve to isolate cylinder from pump unit. Negative pressure switch. 1.B.4 Actuator An actuator is the device that transfers fluid or electrical energy into mechanical energy. The actuator could be piston because it moves up and down. Note: In very old installations, a car is raised or lowered by a ram powered by water pressure. Newer installations use oil pressure to power a ram. Some less modern hydraulic elevators and hydraulic elevators that travel over six stories may use cables and counterweights. 1.C Suspended system (in case of using Roped Hydraulic elevator) Suspended system The car cage is suspended from a wire cable, and a jigger consisting of a fixed cylinder, a sliding ram, and a set of two pulley blocks, which is provided at the foot of the hole of the cage. One pulley block is movable while the other one is fixed. The sliding ram end is connected to the movable pulley block. The cage is suspended from the other end of the rope. The raising or lowering of the cage of the lift is done by the jigger. This arrangement is used to increase the speed of the lift by a 2:1 roping ratio. Car speed up to 150 feet per minute is attained and maximum travel length is 48 feet (14m). Where the car is suspended, the cylinders shall be solidly mounted on the building structure and the head of the ram adequately guided or supported to carry the rope pulley. A device shall be incorporated which will initiate the closing of the lowering valve in the event of the car being prevented from descending by an obstruction. The device may be either a low pressure switch in the hydraulic line or a slack rope switch. 2- Safety System The hydraulic elevator has dominated the low-rise market because it is cheaper to build, install and service, and because it has a decidedly better safety record than the electric elevator. Especially in earthquake endangered areas, the hydraulic elevator has proven itself to be clearly the safer option. Due to the threat presented by swinging counterweights and also because the car is suspended from the top of the hoistway, the traction elevator is particularly vulnerable to a shaking building compared to the hydraulic elevator which is installed practically on the building’s foundation. The safety system will include the following components: 2.A Manual reset slack rope safety switch A "slack/broken cable" safety device shall be supplied which will stop and sustain the elevator and its rated load, if either of the hoisting cables become slack or breaks. The safety device shall be resettable by the operation of the elevator in the upward direction. A switch shall be mounted in such a position as to sense the operation of the safety device, and will open the safety circuit to the controller to prevent operation of the elevator in either direction. 2.B Final Limit Switch The elevator shall be equipped with a final limit switch to cut off all power to the elevator if the upper normal terminal stopping devices fail. 2.C Seismic valve for hydraulic elevators Seismic valve for hydraulic elevators A valve located in the pit close to the jack that is designed to hold pressure if the hydraulic line is broken due to seismic activity. 2.D Buffers The buffer-striking member on the underside of the car must stop the elevator before the jack plunger reaches its down limit of travel. 2.E Anti-creep device Provision shall be made to automatically return the car to the landing level at a speed not exceeding 0.15 m/s in the event of a leakage in the hydraulic system causing the car to move downward for more than 75 mm but within the unlocking zone. 2.F Manual emergency operation Readily accessible manual devices for emergency operation shall be provided in the machine room. 2.G Other Safety Devices Automatic bi-directional leveling. Pit switch. Pump run timer. Car top stop switch. Emergency battery back-up for lighting, alarm and lowering. Cab gate safety switch. Method of operation for Hydraulic Elevators Method of operation for Hydraulic Elevators 1- For Direct Acting Type The pump forces fluid from the tank into a pipe leading to the cylinder. When the valve is opened, the pressurized fluid will take the path of least resistance and return to the fluid reservoir. But when the valve is closed, the pressurized fluid has nowhere to go except into the cylinder. As the fluid collects in the cylinder, it pushes the piston up, lifting the elevator car. When the car approaches the correct floor, the control system sends a signal to the electric motor to gradually shut off the pump. With the pump off, there is no more fluid flowing into the cylinder, but the fluid that is already in the cylinder cannot escape (it can't flow backward through the pump, and the valve is still closed). The piston rests on the fluid, and the car stays where it is. To lower the car, the elevator control system sends a signal to the valve. The valve is operated electrically by a basic solenoid switch (Actuator). When the solenoid opens the valve, the fluid that has collected in the cylinder can flow out into the fluid reservoir. The weight of the car and the cargo pushes down on the piston, which drives the fluid into the reservoir. The car gradually descends. To stop the car at a lower floor, the control system closes the valve again. 2- For Indirect Acting (Suspended) Hydraulic System Type Water or any hydraulic fluid at a high pressure is admitted into the fixed cylinder of the jigger. This high pressure hydraulic fluid pushes the sliding ram to move towards left side as shown in the figure. When the sliding ram moves towards the left side, the distance between the fixed and movable pulleys increases and thus the cage is lifted up. When the water or the hydraulic fluid under high pressure inside the cylinder is released, then the distance between the two pulleys decreases and thus the cage comes down. Thus the suspended-type hydraulic lifts are more popular than direct type lifts. Hydraulic Elevators Machine Room Hydraulic Elevators Machine Room The equipment rooms for hydraulic elevators are normally located at the lower level of a building, but can be at any floor level or 50 to 100 feet away from the elevator shaft. Machine Room Electromechanical Requirements Machine Room Electromechanical Requirements The hydraulic pump unit, GFI duplex receptacle and fused disconnect switches (elevator lighting) must be located in a dedicated machine room. Adequate working space in the machine room includes clearance in front of the pump unit and the proper location of the light switch and disconnect switches. Two dedicated PVC sleeves, at least 3” (76 mm) in diameter, will be required between the hoistway and the machine room, one sleeve for the hydraulic hose and one for the electrical conduit. This is to enable the installers to make the connection between the cylinder and the pumping unit. The sleeves should enter the hoistway at either corner of the support wall. The machine room must be provided with at least 100 lx lighting over the pumping unit and disconnect switches. The machine room must be provided with two lockable fused disconnects rated for the pumping unit. Disconnect switches should be located on the strike (lock) side of the machine room door. At least one GFCI duplex receptacle connected to a 15 amp branch circuit shall be installed in the machine room. This Topic will be the last one that explains the Traction elevator components and In the next Topic, I will explain the Escalators Basic Components . So, please keep following. Note: these topics about elevators in this course EE-1: Beginner's electrical design course is an introduction only for beginners to know general basic information about elevators as a type of Power loads. But in other levels of our electrical design courses, we will show and explain in detail the Elevator Loads Estimation calculations.
Stick every Box Jump! Do every elevated Push Up knowing your hands won’t slip! Grind through some Bulgarian Split Squats without worrying about your back foot sliding! Do it all with the Synergee Non-Slip 3-in-1 Plyo Box! This Box will open numerous possibilities for your training routine and it is extremely durable. Our Non-Slip Box is made from ¾ inch-thick plywood, coated with PVC non-slip material and a hexagonal design that diverts sweat and water away from the landing surface. We created this awesome box with your safety in mind and used the latest technology to create a piece of gear that can withstand 450lb and all the sweat (or tears) you throw at it. Each easy-to-assemble and expertly crafted Box comes with 3 different height options, so every flip of the Box unlocks a new challenge. While it will make your muscles ache, it sure is easy on the eyes. The black anti-slip coating contrasted with the wooden sunken relief makes it a fine lookin’ piece of gear that will look AWESOME in your gym!Non-Slip Plyo Guide 16"-14"-12" 20"-18"-16" 24"-20"-16" 30"-24"-20" Inner Supports Required No Yes Yes Yes Pre Drilled Holes Yes Yes Yes Yes Screws Included Yes Yes Yes Yes
