Automatic shift function of hand since the transmission

In recent years, which has the function of automatic shift hand - the one transmission (AMT), the domestic heavy commercial vehicle manual hoist boom, developing rapidly, the loading rate is rising. By drivers, however, the use of arm for gear transform mechanical manual transmission (MT), despite the challenges, but as a result of product performance has a comparative advantage is very outstanding, therefore, under the current national conditions, is chainb lock a heavy commercial vehicles of the most widely used variable speed device. In the field of heavy MT gearbox, the loading rate is the highest gear more modular MT transmission. From the point of product technical characteristics, modular MT gearbox, generally there are two kinds, one kind is times file (sectional match) combined, the other is a half (plug-in match) combined. 1.1 times the combined in terms of the structure of products, times file combined MT gearbox, is back in the main transmission series to install a second vice transmission (high and low), the main transmission gear by the increase in the number 1 times. Gear transmission ratio increased by numerical value is equal to the product of the main transmission gear ratio and auxiliary transmission ratio, number of logarithmic is less than the gear and gear. Therefore, the size of the gearbox casing is shortened, it shorten the length of the shaft, but stiffness increased, thus increasing the transmission capacity.

Chain performance parameters of the measuring device

Chain blocks the development of the performance parameters of the measuring device when the mechanical lifting transportation machinery research institute, Beijing chainb lock sound Gu Yuan Yuan Fang hand chain hoist is a kind of enormous quantity wide manual lifting equipment. When chain ascension rated load, hand in hand on the zipper to exert certain pulling force, the force will show that the size of the chain of the machine efficiency. We developed measuring device is used to measure the hand pull in the chain, the machine efficiency and continuous motion test and development. 1. The measurement problems in the past, before hand to pull the heavy lead method is used to measure, namely to hang up the chain to be tested in the product test rig, equal to the rated lifting weight of load test on the hoist hook, and increase the height of 300 mm. Measurement will hand chain blocks a chain of fixed down side chain, on the hand chain of hoisting side plus the first measured rated hand gourd tension value of Jordan farmar (farmar location close to the measured gourd) as far as possible, at the same time combined with equal to the rated hand pull of 50% of the value of the additional weight. When you disengage the down side of the hand chain, observe side hand lifting chain on weight reduction, such as Jordan farmar in the midway stop or accelerated decline, should be appropriate to increase or decrease the rated hand pulling force value of Jordan hoist equipment, at a uniform rate until farmar can drop 200 mm effective stroke, is the weight of the weight is the hand to pull the measured value.

Mechanical efficiency calculation problem

Mechanical efficiency computation chainb lock is an examination questions type, as long as the students grasp the mechanical efficiency calculation problem of the problem solving skills, accurately identified which force to do the work is useful work, which total energy is doing the work force, will be able to correct the problem solving fast. In this paper, through the analysis of the general topic, for example, and the mechanical efficiency, and the students to manual hoist and summary mechanical efficiency calculation problem of the problem solving skills. A using block and tackle, the vertical case 1 in small construction site, simple lifting equipment commonly used vertical lifting construction materials, its working principle of pulley block as shown in figure 1. One will be the total weight is 4000 G n bricks uniform to 10 m high above, takes 40 s, hoist provide pulling force F 2500 n. : (1) the useful work in the process; (2) the work and power of the force F; Analysis (3) the mechanical efficiency of pulley block. (1) work is equal to the size of the forces acting on the object and the object in the direction of the force on through distance by figure 1. The figure 1 shows that useful work is the effect on the objects of the work done. As shown in figure 2, because the object in the vertical direction to do uniform motion in a straight line, so F = G, namely there W = F, h = Gh. (2) due to mechanical tension is through the direct effect on the rope of the free end, so the work force F do is work all the time. So the power of pull force F can be used.

Lever hoist wire rope testing project

The lever hoist wire rope test project, the design of the mechanical efficiency is reflect the force transmission system quality and the manufacturing quality of a project. Lever hoist industry, this project has discussed proposed hoist equipment, measurement techniques and special test bench test method, but because of its precision is not high or testing difficulties to unity and promotion. This paper introduces a method, which can conveniently and accurately calculate the chainb lock hoist wire rope mechanical efficiency. One of the chain mechanical transmission parts. Each section by the roller chain plate, sleeve, and the shaft pin pin (chain), etc. Vice many chain transmission in drilling equipment, such as the diesel engine and car, winch drive and drive wheel, etc. Its advantage is to transfer power without sliding, under high-speed and two axis center distance can be very big. Drilling equipment used in the chain of sleeve roller chain, there are more than three row and double row row, such as mechanical upload using chain. Made of metal small ring together like a rope.

Chain lever hoist is widely used

HSH lever hoist ring chain is widely used in electric power, mining, shipbuilding, construction, transportation, post and telecommunications chainb lock such as equipment installation, lifting, part drawing, bulk, bundling, line taut and welding counterpoint, lever hoist especially in narrow workplace, field aerial work and different Angle of pull more show its manual hoist. Light chain lever hoist is a kind of small, multi-purpose manual lifting, traction machine, widely used in electric power, mining, shipbuilding, construction, transportation, post and telecommunications departments such as equipment installation, lifting, part drawing, bulk, bundling, line taut and welding counterpoint, lever hoist especially in narrow workplace, field aerial work and different Angle of pull more show its superiority. HSH - DC lever hoist subminiature, ultra-low weight, easy to carry, high operating easily, ka ca can firmly fasten. A subminiature because of its structure, light weight, etc. In the place where high operation and small operation. Light goods fastening, fixed object, calibration position. On various occasions. 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 choose the appropriate operating position, or in small tonnage machinery exponentially expand its load capacity, a number of machines can be used for large tonnage load in parallel.

Condition of large hoisting equipment

Condition of large hoisting equipment, marks a national engineering machinery manufacturing ability, determine the traffic construction speed and quality. Our country really started to manufacture large chainb lock machinery lifting equipment in the 70 s, after nearly 30 years of arduous exploration, has made great development. Large hoisting equipment level of design capability, manufacturing, lifting load and the intrinsic quality, mechanical properties and the contents of science and technology, continuously leapfrog development. At present, is moving toward product seriation, variety diversification, simple operation, intelligent operation and performance of modern direction. $$in recent years, our country developed manual hoist developed large hoisting equipment, and identified by authority department has been close to or reached the current international advanced level. And initially formed the development of generation, research generation, reserve generation of production pattern. Based $$$$from scratch to lay looking back the development course we may see that the first 20 years since the founding of new China, our country because do not have the ability to create large lifting equipment, lead to transportation and engineering infrastructure used imports all large lifting equipment. $$in the next few years, our country successfully developed the 38 meters high, weight of 140 tons, the hoisting with 10 tons of port portal crane M10-25 type. Used for lifting heavy weights, traction weight and tensioning of the SuoSheng, suitable for places no power supply and liquidity operations.

The role of the chain

Temporary anchor chain chain chart (people used to think that chain can only be used as a lifting and bundled goods, actually the role of the chain is far more than these, with the following two examples, chain blocks can be found more use. Use a: instead of sinking cart river don't call chuan chuan si row of demodex led states with lead in sichuan words ︸ factory in jiaozuo hoist equipment han shan mine shaft wind well temporary change in the process of the ground, because the ground sinking car enough, two cage rope no steady vehicles. They through the ground a temporary car, two stable rope hanging to the headgear pulley platforms, stabilizing the ground end of the rope rope head, two by two 5 t fixed on ground hit temporary anchor chain, need rope tension, adjust by hand chain hoist, this solution both production in need, and save a large amount of manpower and material resources, as shown in the attached figure shown in (a); (note here, steady rope tension adjustment, the small chain chain should be on the main chain). Use 2: eliminate the manual hoist cable head rotating force in the city always Chen hang 24 t skip process four mine shaft

In order to ensure the vulnerability including perfecting hoisting machinery parts and metal structure of security technology, lifting machinery safety device, lifting machinery safety procedures. Metallurgical industry with the crane has the characteristics of different, its safety technical measures are also different. Improve the crane safety technical parts, main parts, have the hook, rope and pulley and drum, brake, gear reducer and gear coupling, wheels, etc. Hook according to the structure is divided into forging hook and chip.

Lifting equipment is made up of improvement slot, vibration motor, vibration isolation system and the base, etc

Lifting equipment is made up of improvement slot, vibration motor, vibration isolation system and the base, etc. This series of hoist is the vibration motor as chainb lock source, on the improvement slot with two sets of the same type of the center line of the cross Angle vibration motor installation, and do the opposite direction from the synchronous rotation, vibration motor with eccentric block rotates at every instant position of the centrifugal force hoist equipment by the component along the casting direction for reciprocating motion, make the bearing on the shock absorber of whole body vibration, the material being thrown up in the improvement slot upward movement at the same time, the material fall into the trough, start being thrown up, this time can make a good contact with raw material and air, also can have the effect of thermal cooling. The elevator to the powder, block and short fibers of solid materials (except for a viscous and caked) can be vertical transmission, also can complete drying, cooling effect of the material. Open type, closed two structures. And we can special design

Choose steel materials manufacturing

Choose steel materials manufacturing, chain chainb lock, the main part of the chain with 800 mpa high strength lifting chain, material generally is 20 m2, medium frequency quenching heat treatment, low wear and corrosion resistance of the chain; High strength hook, general for alloy steel material, calcined play type design ensures that the slow lifting hook to manual hoist overload; Comply with the European CE safety standards.