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 effect

Overview of henan coalification coal company manual hoist crane in order to reduce the well the worker in the upper and lower labor intensity of the well on the way, in 1992 and 2002, respectively, at one level and two level, between two and three levels of each set up a length of 500 m trolley car. Aerial mancar since the equipment running well since it was put into operation, drastically reduce the labor intensity of underground staff's work. However, aerial hoist equipment short service life of wire rope has been plagued our technical problems, the longest service life of wire rope for five months, the shortest is only 45 days. The reason is caused by fatigue broken wires transfinite (" coal mine safety regulations "regulation: broken wires in one lay length reaches 25% of the total number of wire must be replaced. I mine trolley car wire rope specifications for: 6 x 19-21.5 - ZZ - 1670, namely the broken wires in one lay length to 28) must be replaced when. The value of a wire rope is 17000 yuan, need at least four small class to complete 12 employees to work hard. Frequent replacement of wire rope not only affect the normal downhole worker ChengZuoRen car, but also to spend a lot of unnecessary manpower and material resources. In order to solve this problem, we return to the operational status of vehicle equipment and comprehensive study and analysis of aerial mancar wire rope for the stress analysis and selection.

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.

Chain lever hoist is a kind of small manual lifting machinery

Chain lever hoist is a kind of small manual lifting machinery, has a compact structure, simple operation, light and energy saving, easy to carry, etc. manual hoist with the chain, more suitable for small workplaces, and aerial work, field operation, and can be used in all kinds of Angle of traction and bundled items. So chain lever hoist is widely applied in the shipyard hull hoist equipment welding of high voltage transmission lines of electricity department joint taut, agriculture, forestry and transportation of lifting loading, fastening, vehicle traction and factories, mines, construction and other departments of equipment installation calibration, hoisting, part drawing, etc. (see photo). The shipyard hull assembly welding job, as a result of chain lever hoist, can realize rapid and accurate ship registration, not only improve the size precision of the hull and the labor productivity, and improve the quality of the surface of the hull of the ship. Chain lever. Reed easy to carry. In a narrow place high or operations and also very convenient. Its net weight only 1. 6 kg, the minimum distance between hook is 205 mm. Because of using the K (0 unique clutch device, can quickly adjust to the work required to lift. Through the research and development of K (0, chain strength to IOOONlmmZ, become the world's highest level of nickel plated chain. It is not only strong, its corrosion resistance, wear resistance is high.

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.