•Superior rigidity makes the hoist dust-proof and water-pfoof; •Severe environment and work condition are acceptable; •Simple structure and few components •Adopt Janpanese FEC chain; •To greatly enhance the performance of the fatigue and wearresistance. •Limit protection adevice can avoid overload occerring; •Hook bolt can prevent the rigging accidently from slip; •Moter is equipped with thermal protection device; •limit contactors are set in the machine.
manual chain hoist 1. OEM 2. Certificated,CE,GS,ISO 3. 1 year guarantee 4. manual chain hoist 50 ton
50T*3m heavy duty VC-B manual chain hoist
Main Performances and Technical Specifications
Our Service 1.We can make special sample according to the customer’s requirement. 2. We have more than 20 professional technical team, provide best after-sales service 3. Fast delivery time 4. We have CE, ISO9001 and GS certification.
Send a message to us:
Q:How to choose the right sling?
Commonly used slings and slings are lifting belts, lifting chains and wire ropes. Slings and slings must be matched with lifting equipment, such as 5 tons or 10 tons. Cranes shall be marked with maximum lifting weight. Lifting belt will not damage the hoisting object but poor wear resistance, easy maintenance but large weight lifting chain, rope buckle range but the broken wire after easily scratch objects and operators, each have advantages and disadvantages, to meet their own needs is the best lifting.Phosphating coating of steel wire rope production technology patent, give priority to the use of manganese or zinc manganese phosphating, and smooth steel wire rope production process comparison, just increase the steel wire wear phosphating process, phosphating of steel wire surface after the abrasion resistance and corrosion resistance is greatly improved, the use of direct phosphating steel wire twisting steel wire rope (steel wire after phosphating not drawing). The fatigue test data show that the fatigue life of the phosphating coating of steel wire rope is about 3-4 times the same structure of plain steel wire rope, wire rope is 2-3 times of imports (laboratory comparable conditions) with the research on the wear resistance of phosphating, and greatly enhance the possibility of. Manganese phosphating is wear resistant phosphating, which can completely solve the wear problem in the use of wire rope.
Q:What does the inspection of rigging involve?
Galvanized steel wire rope, including hot galvanized and galvanized two kinds, galvanized zinc layer is thick corrosion resistant ability is strong, the thickness of zinc in grams / square meter said.
Q:Which sling manufacturer is more reliable?
A variety of commonly used wire rope phosphating coating steel wire rope, galvanized steel wire, stainless steel wire rope or coated steel wire rope, the use of atmospheric environment, patented technology to produce manganese phosphating coating of steel wire rope has the longest lifespan, heavy corrosion environment optimization of hot galvanized wire rope double - phosphating coating.
Q:Why are the suspension bridges a main cable, even a n multi sling, not a bridge directly from the tower?
The main weight of a bridge is not the car or train on it, but the road itself, that is, the road we see. Now let's analyze this:We analyze it with a pylon. The two sides of the pylon are symmetrical stay cables which connect the main beam of the pylon through the stay cables. Now suppose that only two towers on both sides of the cable, symmetrical each one of the two cables subjected to beam gravity, two symmetrical of the cable along the direction of the force, according to the stress analysis, the stress can be decomposed into a horizontal and vertical force to a downward force a vertical force; and the same on the right side of the force can be decomposed into the right level of a downward force; the two force is symmetrical, so the two level of the left and right horizontal force cancel each other out,
Q:What's the catch?
Slings are ropes made of wire or synthetic fiber, used for hoisting.
Q:Ceiling installation does not allow the use of air nails?
Connection of hanging cup, sling and structural layerOperation method: (1) the main consideration connected with embedded parts and transition piece.In the first layer in embedded iron or wood brick (except water brick). The location shall be accurate and adequate adjustment should be made.The transition in the iron and wooden fittings, so as to adjust the mindware error, and mindware nail, screw, welding, wear.The suspender and the sling are connected with the transition connecting piece.
Q:What torture refers to the lever and the sling
The sling hanging and torture half pig "(only one side of the body hanging victims), pawn (tied hanging arm and feet) and so on, all belong to the suspension of torture throughout human skin nerve endings, the feeling is very sensitive, in the daily life of people on the outside of the pain, is the nerve end suspension shoot at work. Some nerve endings, such as fingers, toes, sexual organs, etc., are more acute and abnormal. The distribution of the human nerve network also forms many subcutaneous sensitive areas, such as the two sides of the spine, the armpit, the medial thigh, the two rib, and so on. Therefore, the users of torture also torture people according to these physiological characteristics of the human body, and bring great suffering to the sufferers with more labor-saving means. The vast majority of the torture we know fall into this category, and the torture against women is basically the same.
Q:Does the pressing rope have any influence on the tension value of the wire rope?
Lifting equipment commonly used wire rope varieties of phosphating coating steel wire rope, galvanized steel wire, stainless steel wire rope or coated steel wire rope.
Q:What are the precautions for rigging in hoisting works?
1. develop good hoisting habits and plan how to hang, lift and unload before lifting.2. prepare: determine the weight of the hanging object and its center of gravity, read the attached document carefully, mark the lifting point and weight data. Only when the center of gravity has been determined can the hook be hung at the right place!3. the crane operator shall be informed of the weight of the suspended object.4. the crane hook shall be hung vertically above the center of gravity of the suspended object.5. lifting heavy pieces, both to avoid damage to lifting objects, but also to prevent damage to the rigging itself. The following conditions shall be observed in order to avoid rotation or fall:(a) single leg rigging, the lifting point shall be perpendicular to the center of gravity of the lifting object.(b) if it is a two leg rigging, the suspension point shall be on either side of the lifting object, with the lifting point above the center of gravity.(c) if it is a three leg and four leg rigging, the suspension point shall be evenly located at the center of gravity of the lifting object, and above the center of gravity of the suspended object.Attention must be paid to the lifting angle, between the vertical and the leg): the greater the lifting angle, the smaller the lifting capacity. Lifting angles of more than 60 degrees are absolutely not allowed!
Q:Notice of tower crane?
The metal structure of the tower crane, the track and the metal shell of all the electrical equipment shall have reliable earthing devices, and the grounding resistance shall not be greater than 4 ohms, and lightning protection devices shall be set up.Fourth. Pole arrangement, each attachment device attached to the wall and spaced distance should be in accordance with the provisions of the original factory, homemade bar design calculations should be.