Whether the safety regulations for hoisting machinery spreaders and rigging are effective

Safety Regulations for Hoisting Machinery Spreader and Rigging LD 48-1993 Implementation date February 1, 1994 is the current standard.

The rigging spreader of lifting equipment, if it breaks suddenly, it is easy to cause major accidents, it is very important to choose high-quality spreaders and check frequently, GBT30587-2014 wire rope sling ring cable, GBT16271-2009 wire rope sling insert cable buckle, in accordance with the above two national standards selection and acceptance of wire rope rigging, for reference only.

Commonly used wire ropes are phosphate-coated wire rope, galvanized wire rope, stainless steel wire rope or plastic-coated wire rope, used in atmospheric environment, the patented technology produces the longest service life of manganese phosphate coated wire rope, and the hot-dip galvanized - phosphated double-coated wire rope is preferred in heavy corrosion environment, and the phosphate coating improves the wear resistance and corrosion resistance of the steel wire, and is not easy to wear and corrosion is the reason for improving the service life of the wire rope, and the smooth wire rope is being completely eliminated.

Phosphated coated wire rope, preferentially using manganese or zinc-manganese phosphating, compared with the smooth wire rope production process, only increase the wear-resistant phosphating treatment process before rope making, the wear resistance and corrosion resistance of the steel wire are greatly improved, and the phosphated steel wire is directly twisted without cold drawing. At present, the fatigue test data shows that the fatigue life of the phosphate coated wire rope is about 3 times that of the smooth wire rope of the same structure (under comparable conditions in the laboratory), and it is not easy to wear and not easy to rust is the reason for the super long extension of the service life of the wire rope, which has far surpassed the imported wire rope. Although the price of manganese phosphate coated wire rope is higher than that of smooth wire rope, because of its long service life, the average daily cost is only 40-55% of that of smooth wire rope, which is for reference only.

Precautions for operation:

1) The rolling method for loading and unloading mobile equipment used in soil construction, the thickness of the roller bar should be consistent, and the annual width should be 50cm longer than the width of the pallet row, and it is strictly forbidden to fill the roller bar with gloves. When loading and unloading the truck, the slope of the piping shall not be greater than 20 °, the erection of the raceway should be smooth and solid, the joints should be staggered, the speed of rolling should not be too fast, and the rope should be used if necessary.

2) In the process of installation, if problems are found, measures should be taken in time, and then continue to lift after treatment.

3) When hoisting large-scale tower equipment with a lever, a plurality of winches must be operated together, and the winch speed of each winch must be approximately the same, so as to ensure that the force of each lifting point on the tower body tends to be roughly uniform, so as to avoid the uneven force of the tower body and deformation.

4) when using the rotary method or the knockdown method to hoist the tower tank, the hinge wrist installed at the bottom of the tower body must have the ability to resist the horizontal thrust generated in the lifting process, the left and right slip ropes of the tower body must be firm in the lifting process, and when the tower body rotates in place at the height, it slowly falls into the foundation to avoid accidents and deformation.

5) When the equipment is installed on the frame or on the building, its strength and stability should meet the requirements of the installation conditions. After the equipment is installed and positioned, it should be connected and fastened or welded according to the requirements of the drawing, and the strength and stability required by the design can be decoupled only after it has been satisfied, otherwise it must be temporarily fixed.

Precautions before hoisting operations.

1. Check that the safety protection devices and indicating instruments should be complete.

2. Fuel, lubricating oil, hydraulic oil and cooling water should be added sufficiently.

3. Before starting the oil pump, let the engine run at low speed for a period of time.

4. Check the wire rope and connection parts should comply with the regulations.

5. Check whether the hydraulic pressure is normal.

6. Check the tire pressure and the connectors should not be loose.

7. Adjust the clear lead and the legs, be sure to lay the legs that are stretched out in the prescribed order, make the lifting in a water state, and adjust the body so that the inclination of the slewing bearing surface is not greater than 1 1000 (the level bubble is centered) when there is no load.

8. Fully check the ground conditions of the work site. The ground of the work site must have the moment conditions that can level the crane and fully withstand the outriggers.

9. Pay attention to whether the foundation is soft, if it is soft, you must pad the wooden board or soil block that can bear the legs.

10. The outriggers should not be close to the foundation according to the square lot.

1.Purpose: This system applies to the production department.

2.In order to ensure safe construction, ensure the personal safety of employees and complete equipment, reasonable selection, correct operation, scientific maintenance of lifting ropes and spreaders, pay attention to safe use and strengthen safety work, this system is formulated.

3.When the warehouse is accepted, the certificate of conformity must be carefully checked.

1) Lifting wire ropes, slings, white and brown ropes, hooks, pressure hooks, rings, snap rings and other tools, the warehouse must carefully check the manufacturer's certificate of qualification before issuance, before it is allowed to be put into use.

2) No certificate or self-made lifting tools, must be in accordance with the relevant technical standards (provisions) for material inspection and load test, inspection and trial inspection of the absence of qualified inspection and grinding before being put into use.

4.The lifting spreader rented from outside the construction site must have a certificate of conformity before it can be put into use.

5.Strictly follow the safety regulations and use the crane correctly.

1) When using wire rope (white brown rope, sling), to prevent mechanical damage or corrosion, the wire rope (white brown rope, sling) and the edges and corners of the object contact start, take liner protection measures, in the use of wire rope to prevent contact with the welded iron conductor, so as not to affect the performance of the rope and the amount of planting.

Dear, hello, I am happy to answer for you, the safety requirements of the hoisting rope are.

1. Noun annotation: Spreader: Rigid fetching device for lifting and lifting operations (such as:

Hooks, C-hooks, oil drum tongs, etc.). Sling: When lifting items, tie and hook on the item with a flexible fetch device.

Such as: wire rope, wire rope rigging, synthetic fiber sling, man-made fiber sling, etc.) Spreader rated lifting capacity: The spreader is allowed to bear the maximum weight of the item when hanging vertically.

Ultimate Working Load of a Sling: Refers to the maximum weight that a single sling is allowed to bear when suspended vertically. Maximum safe working load for slings:

In addition to the vertical suspension use, there is an angle between the sling lifting point and the article, so that the sling force changes, and the maximum weight allowed to bear under a specific hanging mode is called the maximum safe working load of the sling. (Vertical hanging = 1;.)Knot sleeve hanging=; Parallel hanging = 2;45° angle hanging=; 90° angle hanging=; 120° angle crane = 1) Second, the general safety management regulations of spreaders and slings: 1. The purchase of spreaders and slings (1) must be a professional manufacturer.

According to the national standards for production and inspection, with certificate of compliance and maintenance, maintenance instructions. (2) The rated lifting weight, production number, manufacturing date and manufacturer name are marked in the obvious place of the product. 2. Load verification of spreader and sling The newly purchased spreader and sling should be put into use only after passing the test load and test method on the basis of no-load operation and test qualification.

1) Static load test: 1) The spreader takes the times of the rated lifting capacity 2) The sling takes the times of the limit working load of a single branch and a branch. 3) Test Method:

The test load gradually increased and was lifted to 100 200 mm above the ground. The suspension time shall not be less than 10 minutes. The test was repeated three times for visual inspection.

4) Judgment: If there is no crack or permanent deformation in the structure, and there is no abnormal loosening or damage at the joint, the static load test is qualified.

1. Classification and load of lifting machinery.

1) Classification of lifting machinery.

Lifting machinery is divided into five categories: light and small lifting equipment, cranes, lifts, working platforms and mechanical parking equipment.

1.Classification of light and small lifting equipment.

2.Crane classification.

Cranes are divided into three categories: bridge cranes, boom cranes, and cable cranes.

ii) Load. 1.Hoisting loads.

2.Calculation of load for hoisting.

3.Calculated load for multiple cranes to be lifted together.

Second, the steel wire polishes the brigade rope and light and small lifting equipment.

1) Specifications and selection of wire rope blind stool.

1.Wire ropes commonly used in lifting and hoisting.

2.The gauge key of the wire rope is Xunge.

2) The main requirements for the use of light and small lifting equipment.

1.The main requirements for the use of jacks.

2.The main requirements for the use of lifting pulleys.

3.The main requirements for the use of the winches.

3. Parameters and requirements for the use of mobile cranes.

1.Basic parameters of mobile crane.

2.Characteristic curves of a mobile crane.

3.Selection steps of mobile cranes.

4.Foundation requirements for mobile cranes.

Fourth, the use of mast crane requirements.

1.The structure of the mast crane.

2.Requirements for the use of mast cranes.

3.The structural form and scope of use of ground anchors.

The commonly used wire rope varieties of equipment are as follows:

1.Phosphate coated wire rope (Chinese patent), the steel wire is phosphated by manganese or zinc-manganese, the wear resistance and corrosion resistance of the steel wire surface are comprehensively improved, the composite effect of phosphate film and grease can effectively inhibit the occurrence of fretting wear, completely solve the wear problem of wire rope, the fatigue life is 3 times that of the smooth wire rope with the same structure, and the fatigue life can be verified through the fatigue test (the most credible fatigue test is done in person), which is an upgraded product of the smooth wire rope. It can also be used instead of galvanized steel wire rope with a thin zinc layer (which can be tested by salt spray test or compared with corrosion resistance), with long service life, lower unit cost and better stability.

2.Galvanized steel wire rope, including hot-dip galvanizing and electro-galvanizing, generally speaking, the hot-dip galvanized zinc layer is thick, and the electro-galvanized zinc layer is thin.

3.Stainless steel wire rope, mainly 304 or 316 stainless steel, has excellent anti-corrosion effect but is expensive.

4.Plastic-coated wire rope, based on carbon wire rope, the outer layer is coated with polyethylene, polypropylene or nylon.

5.Smooth wire rope, short service life, market demand sharply reduced, will be phosphated coated wire rope completely eliminated.

6.Wire rope for mooring in marine engineering.

7.Cable wire rope.

For lifting machinery used in atmospheric environments, manganese-phosphated coated wire ropes are preferred, hot-dip galvanized-phosphating double-coated wire ropes are preferred in heavy corrosive environments, and offshore wire ropes are preferred in seawater. Please note that the name of the wire rope must be indicated in the purchase invoice, such as phosphate coated wire rope or 316 stainless steel wire rope, in order to protect their legitimate rights and interests.

1. It is strictly forbidden to overload it.

2. Unmarked slings are not allowed to be used after being confirmed.

3. The parts on the sling assembly parts are regularly inspected according to the requirements of the combined parts.

4. Do not use hammering to correct the distorted spreader.

5. Slings are forbidden to be thrown.

6. Do not pull or roll the weight under the sling.

7. The slings purchased outside must be products that are produced, inspected, certified and maintained by professional manufacturers in accordance with national standards. In the obvious place of the product, there must be a non-wear rated lifting capacity, production number, manufacturing date, manufacturer name and other marks. The user unit shall prepare safe use procedures and maintenance systems according to the characteristics of the instruction manual and the use environment.