Lever hoist is defined

Lever hoist is obtained from human pull (handle) chainb lock the aid of lever principle and load matching line traction, the rotation effect on movement load within a block, drive the load operation. It has compact structure, light weight, small dimension, easy to carry, safe and reliable, long life, small lever force, the wire rope wear small, etc. It can be upgraded, traction, drop, calibration etc. If a particular device, not only can be used as a non linear drawing operation, and can be very convenient to hoist equipment the appropriate operating position, or in small tonnage machinery exponentially expand its load capacity, load a number of machines can be used for large tonnage joint operations. Chain lever hoist is a kind of light is small, multi-purpose manual lifting, traction machine, widely used in electric power, mining, shipbuilding, construction, transportation, post and telecommunications departments such as the installation of equipment, lifting, part drawing, bulk, bundling, line taut and welding counterpoint, etc, especially in small workplaces, field aerial work and different Angle of pull more show its superiority.

Double beam bridge crane operation procedures before work

Double beam bridge crane operation procedures before work
1, before starting work on the brake, hook, rope and safety devices such as parts inspection, according to the requirement of the check card of abnormal phenomenon, should be ruled out.
2, the operator must be confirm there is no person, walk or orbit can be closed the main power supply. Lock on when the power supply circuit breaker or a billboard, should by the relevant people get rid of rear can close the main power supply. Chain electric hoist, including: low hanging type chain electric hoist, DHP were studied.the chainb lock processing type electric hoist, electric chain hoist, DHTZ type electric chain hoist, YH chain hoist, group of rings chain electric hoist. In all parts of steel wire hoist equipment electric hoist, professional production, high quality information to bring you the best quality products.
Reducer, helical gear transmission mechanism is to use level 3 a fixed axle, gear and gear axle has been heat treated alloy steel, box, box cover is made from high quality cast iron, assembly, sealing is good.
Control box: can is used to cut off the main circuit in case of an emergency, and up and down with a trip to protect fire stop device.
Type: wire rope is to use hoisting wire rope, it ensures the durable. Taper motor: lifting motor with large dynamic torque conical rotor asynchronous motor, brake and brake. Push button switch: using hand type, light and flexible, points with string manipulation and wireless remote control in two ways.
Professional, high quality good faith production force more force hoisting machinery products, safe and reliable, economical and practical.

Lever hoist is a kind of hoisting wire rope drawing tools

Lever hoist is a kind of hoisting wire rope drawing tools, when working by hand pull (handle, alternative action by rocker, connecting rod in the clamping mechanism, driving load forward or backward. Because there is no brake lever hoist wire rope, so the chainb lock mechanism is grasping mechanism brake mechanism, is the key to this kind of product. Design lever hoist wire rope, the main problem is the design of clamping mechanism is calculated. Since there is no uniform design specification, we are updated according to many years of three generations of the product design, test and production experience, the design and calculation method of the following are put forward. These data and the method also can be used for reference in the other wire rope in the design of clamping mechanism. Clamp, the size of the clamping plate of the basic calculation of the clamping lever hoist mechanism by the clamp, the clamping plate and pin shaft and the clamping plate links together the side panel, etc. Bridges, buildings and pipelines male door USES, such as zero pull wire rope hoist and the dove was buried a butterfly wing, products, drop a kwai column fresh technology hoist equipment refers to the atmosphere, the reliability index are mechanical efficiency index. But in the past for this product cheeper guan xing code stool mantra against atmosphere xin xin wing code is actually is, handsome model calculation rate value is high. With a rose the silting Lin Xiong, loss of greater than kang wipe clamp body parts of crank rocker articulated order also has two ways: type NHss wire rope lever hoist is brought type, Hs yao products for fork type switch (pick and hinged points). Different hinge order affects only Fried, chu clamp body parts alternately in order. Transmission series and clamp body parts are articulated order does not affect the mechanical efficiency calculation method proposed in this paper is practical, so type NHss single-stage waste shu transmission structure, using a vertical hanging, lifting load Q is working as an example, discuss the Zha calculate mechanical efficiency. According to figure 1 shows that human pull (forward in hand back and forth on the casing, the crank rocker rotary oscillation and auxiliary into work. With the aid of leverage, and alternating and direct money traction load direction, as a work of algal especially '~ to clamp of load"

The shortcomings of the old control mode

The shortcomings of the old control hoist crane is compact, lightweight, easy operation, low cost, wide range of USES. It with a conical rat cage motor as an ascending motor and the car running, cart is usually with squirrel cage motor drive. Hoist crane, there are some inevitable shortcomings, such as the large starting current, the braking impact big, easy create frame and the shaking and the deflection of the cargo; Point move too much, motor overheating, easy to cause broken shaft, motor, reducer and wear accidents burn out. So looking for a good starting and manual hoist control method is very meaningful. Hoist crane all faults are from cage motor control method, because it is direct starting, the starting current is rated current of the 5 ~ 7 times, reverse braking cannot overcome reducer gear clearance between the impact of. For big inertial system, the organization in the process of starting motor under maximum load and maximum torque is chainb lock proportional to the clearance between teeth and gear reducer. At present, the hoist crane often operation, with a push button switch point moving frequently, the motor easy to fever. To make up for the defects, and expand the motor capacity is often used to choose the way. Thus increase the supporting capacity of the motor, at the same time, in order to avoid the broken shaft and broken teeth, and increase the capacity of the gear reducer. From the point of the model characteristics of conventional control, old-fashioned control mode is stumping while saving money, but later use performance is poor, large energy consumption.

Wire rope electric hoist can be used for hoisting equipment alone

Wire rope electric hoist can be used for hoisting equipment alone, equipped with their own car after also can be used for overhead monorail crane, etc, is a kind of compact structure, light weight, high efficiency and convenient operation of the lifting equipment. chainb lock to the building height, such as rail type is divided into 14 types. Code types of HSG standard building height, linear rail, rigid connection table code class type of hand trolley type HSJ standard building height, type curve track, hand trolley type HLG hinged connection standard hoist equipment height, linear rail, rigid connection of sprocket trolley type HLJ standard building height, the curve of orbit, hinged connection of sprocket car type HDG high standard construction, hoisting machinery products type general type of class, group, and the main number code in two parts (FIG. 1-1-2). Figure 1-1-2 type crane product model class, group, said Chinese phonetic alphabet in capital letters. Class, group, the type of code are shown in table 1-1-1. Main parameters are expressed with Arabic numerals. When the product be replaced or structure of A major reform, need to test for identification, its improved code according to the capital of Chinese phonetic alphabet A, B, C, D... Models the tail order, in the original ones. Example: QD20/5 bridge crane, said hook bridge crane, the main hook 20 t, 5 t vice hook.

Heavy equipment manufacturing quality management status

Lifting equipment manufacturing quality management status quo of the crane has been widely used in petrochemical industry, port, shipbuilding, power plant, machinery, metallurgy, construction and other fields, is an important chainb lock of various industries to realize mechanization, automation. With the development of the society, it has extended to elevators, escalators, three-dimensional garage, cable car and amusement, etc, is closely connected with People's Daily life. Lifting hoist equipment as special equipment in China, the exercise of administrative supervision to its security. Design and manufacture of installation shall be implemented in the operation permit system, new or used after a certain period, mandatory safety inspection, issue the use license. At the same time, through implementing a series of laws and regulations, standards, procedures and for design and manufacture, installation, security inspection behavior norms, hoisting equipment, the quality of management has improved. But most lifting equipment manufacture, installation quality in our country is still controlled by the manufacture, installation units themselves, part to supervision by the owner or various forms of administrative management, entrust a third party professional supervision unit process supervision and management of less than thirty percent. Afterwards supervision and supervision of market reaction of all sorts of quality problem and the impact of different. 1. Afterwards supervision concerns with mandatory safety testing is belongs to the final part of the quality inspection, hidden for a variety of quality problems are found and the resulting accident, property damage, casualties or cause disputes and resort to law.

Electric hoist can be used alone

Lever hoist wire rope has three big functions, lifting, tension, traction rope lever tractor specification 0.8 tons, 1.6 tons, 1.6 tons, 5.4 tons. Especially suitable for no power supply condition to use. Wire rope lever tractor when using do not overload operation, once the overload safety pin automatically cut off, please make sure safety pin and then to work after the replacement. Please in strict accordance with the instructions for operation. High work manual hoist basket dedicated lever hoist by HSS - 1.6 T lever hoist, SLS3.0 safety lock, steel hanging basket and suspension mechanism of four divisions. Conform to the compulsory standards issued by the ministry of construction design standards. JGJ59-99 "building construction safety inspection standards" GB19155-2003 "high work hanging basket Q / 12 nj - 2002" the special lever hoist construction chainb lock basket "(business standard) manual high work hanging basket by domestic and foreign advanced technology, reasonable structure, compared with other institutions of hanging basket has erection convenient, simple operation, safe and reliable, the various specifications, saving investment, high efficiency, etc. In the country is the most ideal high homework today, the most advanced and safe operating tools.

Lever lever hoist wire rope and wire rope tractor

Lever lever hoist wire rope and wire rope tractor, wire rope tractor. Is a new type, efficient, safe, durable hoisting machinery products, has three big functions, lifting, pulling, tensioning machine structure design is reasonable, the safety coefficient is high, service life is long, especially suitable for field without power supply condition. Imported chainb lock rope hand hoist main brand TOYO (Japan), the VITAL (d), impression, such as Yale, black bears, jin leopard, rated lifting weight is 800 kg, 1600 kg, 3200 kg, 3200 kg can pull 5 tons. Use the winch wire rope traction harvesters or other containers, running on the track or trackless homework mine transportation mode, including a rope, endless rope, monorail crane and scraper transport, etc. Twist wire rope steel wire for high quality carbon structural steel and alloy steel, 0.4 mm to 4 mm in diameter, and tensile strength of 1400 mpa to 2000 mpa. Rope is hoist equipment fiber, hemp core storage and "pad" role, so that the wire rope with softness, absorption in the tension of wire rope and the contact pressure at the same time, also can sufficiently oily, make the wire rope in use for a long time to get necessary well lubricated.

Chain as the upgrade version of the crown block

Chain as the upgrade version of the crown chainb lock, fully inherited the merits of the crown block, at the same time, a reverse non-return brake speed reducer and the combination of the chain pulley block, symmetry secondary spur gear rotational structure, simple, durable and efficient.Chain generally adopts chip hoist equipment ratchet friction brake, can self braking under load, ratchet in under the action of the spring and ratchet gearing, the brake safety work.

Mechanical type

Mechanical shovel has taiyuan mine machinery, chainb lock weighing, digging, etc. Small and medium-sized excavators more for diesel, hydraulic backhoe, domestic manufacturers heavier. Tower crane mast crane crane

Loader is a kind of widely used in highway, railway, building, water and electricity,hoist equipment, mining and other construction conditions of the machine, it is mainly used to shovel, sandstone, lime soil, coal and other material, can also be used for ore, hard soil, such as mild shovel dug homework.

Stage electric hoist brake is set upside down

Stage electric hoist can be used while being hung upside down can also be applied, in order to ensure proper use of brakes should meet certain safety rules, the following stage to introduce you to lift hoist  brake is set upside down common sense, for your reference.
Stage electric hoist power-driven hoisting mechanism and operating agencies should set the brake. After an accident may result in significant risk to or loss of electric hoist lifting mechanism, the system must be set each drive two separate working brake.
Stage electric hoist used as a lifting mechanism lifting the molten metal, its brake setting shall meet the following requirements:

a. When the nominal weight greater than 5t,chainb lock the stage hoist addition to setting a working brake, it must also set up a safety brake, safety brake is set in the electric hoist low level, when the working brake failure or transmission parts broken off, can be reliably amount of support to live

Constant load;
b. When the nominal weight is less than or equal to 5t, the stage setup work except electric hoist brake, but also should be in the low-level safety brake is set, otherwise the stage  rope hoist  shall be 1.5 times the nominal weight by design, or use of selected units of the crane lifting capacity

Is the maximum weight of 1.5 times, and with clear signs from the weight of the maximum weight allowed.

The following irregularities prohibited electric chain hoist

Electric Rope hoist  when in operation, its use must be strictly complied with the rules, if used improperly hate could cause significant casualties, whether it is for personal, family or business will result in significant losses. The electric chain hoist use the most is that it's easy to overlook the shaking problem, it directly affects the lives and safety of staff.
So how to control and prevent electric  chainb lock  shake it? Following methods is our years of production practice, summed up the electric chain hoist operator will have a good guide.

First, the use of electric chain  lift hoist  them, do not hang up the load side of the beam near the end of the state of operation, it is easy to cause heavy falling or accidental encounter people, etc., will result in serious injuries and personnel casualties.
Secondly, electric chain hoist in the lifting process can not be horizontal pull, so can easily lead to hoist shaking phenomenon occurs, resulting in a dangerous place.
Finally, and most likely cause of the accident, and that is the use of electric chain hoist lifting process not sharp load, this will cause pressure surge, the most prone to accidents.

Speed ​​up to 15m/min rapid electric chain hoist

  PK type electric  rope hoist  many industry insiders are not familiar, this is the only chain electric hoist two-speed hoist, but the common specifications currently the fastest lifting speed can reach 10m/min, along with the increasing requirements of customers , is now in the PK two-speed electric hoist, based on the structure by changing the motor power and can make it speed up to 15m/min.
       This rapid chain hoist is converted PK type electric lift hoist  host and control device combination thereof, both through the spiral wire connection. Control unit and the electric hoist hook as a whole, when used with one hand holding the handle, you can easily hook, press up, down keys to move the hoist or horizontally, so this fast electric  chainb lock  particularly suitable machining, Electrical and other industries in the workpiece, the tool lifting work.
       These are on the rapid transformation of electric chain hoist introduction, if you are using or manufacturing process gourd have any good ideas and needs, please feel free to communicate with me.

chainb lock brake performance test

chainb lock brake performance test

Is more commonly used chainb locks  hoist equipment   also known as the hoist, crane hoist and so on. chainb locks easy to operate, easy to carry, loved by the users.

By introducing the understanding, I believe we all pull hoist opponents have an overall understanding, in order to make everyone a better understanding of the basics of  manual hoist s, today we look at the main manual hoist brake test.

Test, the use of manual hoists lifting heavy objects of different weights, as shown below, to be a certain height after lifting heavy objects, keep still, one hour later, observe whether the whereabouts of weight.

After the test, prove their own weight without the whereabouts of this manual hoist brake performance tests show good work correctly.