X
Q
The use of chain hoists principle
+
A
hz-c-type chain hoist shell made of imported steel triangle case, than the more common solid stable circular shell. chain hoist friction plate within in the production process, improve the wear resistance, in the sales process also the friction distribution of a film, chain hoist chain in the factory have been rust treatment, length can be customized according to customer demand, the rotating gear chain hoists high temperature heat treatment to achieve the very high wear resistance of gear, according to to chain hoists to meet the high-intensity, high frequency of work environment and extend the service life of chain hoists, chain hoists chain can withstand more than 4 times the drag force pull to ensure work safety. Wei Sheng Beijing RoyalTek production and sales of the chain hoist is an international standard Z-class high-strength chain hoist, advanced structure, high strength components, easy maintenance features. Our company is a professional manufacture of mechanical equipment, lifting a modern enterprise with many years of design manufacturing history, and an effective corporate culture, advanced management concepts, distinctive management style, in the market, establishing a good corporate image.
Q
About Crane common sense
+
A
1. Lifting the basic institutions use a variety of lifting different structures are very different, but all have the basic actions to achieve lift hoisting mechanism. Some crane also has run institutions, luffing, slewing, or other body of work. Material can be flexible rope or lifting items such as hanging a chain movements, may also be a screw or other rigid pieces held the top. Characterization of performance parameters crane lifting capacity of the basic work is the most important performance parameters from the weight and work level. ① from the weight is permitted under specified conditions of work of the heavy lifting the maximum weight that the load does. Generally with electromagnetic chuck (see lifting heads) or grab the crane, its lifting capacity should also include electromagnetic disk or grab the weight. Boom-type crane hook from the weight includes the weight group. ② lifting the working level to reflect the general working conditions of the performance parameters of the design and selection of an important basis for lifting. It consists of lifting the required use of the work needs to be done during the period the total number of cycle and load state to decide. International Organization for Standardization (iso) provides for lifting the working level is divided into eight. China only requires the crane is divided into eight, light a small lifting equipment, lifts, overhead monorail system has no division level. Operating procedures for regular and reproducible large crane, for example, cargo ship docks loading and unloading cranes, overhead crane used for storage and for blast furnace feed hopper lift, duty cycle is also an important parameter. Work cycle to complete a work cycle that the time required, it depends on the pace of work organization and with transport distance. The crane productivity is sometimes used as an important parameter, usually an hour to complete the lifting capacity to represent. Working-level concept. Cranes level is determined by two factors, one characterized by crane in use throughout the design lifetime frequency of use rating, the second is that the loading of the extent of crane load condition, considering the use of grade and load conditions, according to diagonal principle, Cranes level is divided into ai ~ a8 8, crane crane components level is zero, ministry, an important basis for component design, but also safety checks to determine the zero, Ministry of standard components are scrapped and the basis for quantitative analysis of the accident. In general, the working-level difference, the safety factor is different, and disposal standards are different. Cranes in different extents, their safety lifting the load is different from the calibration plate weight is the biggest lifting capacity crane is not in any case can be the biggest load lifting, hydraulic telescopic boom cranes only in the basic arm (short arm length), maximum elevation, the legs under the conditions fixed firmly to secure lifting the weight from the calibration plate, which is to bracket the difference between cranes and crane one. The question of test centers is the largest truck crane lifting the weight from the conditions to be met. A crane type and type of working-level 1.1 Cranes Cranes Cranes type is that busy work load level and degree of change parameters. The extent of work busy hours of work, including cranes and crane bodies duty cycle.Degree of load changes, since the whole year with the crane and lifting the weight of the average nominal weight ratio.Also includes the number of cycles per hour of work. According cranes busy loading level and degree of change the crane into light, intermediate, heavy duty and extra heavy duty. Table 1 is the crane type table. Table 1 Type of Cranes busy work sheet type of work load level of the degree of change the number of hours of work organization crane operating time rate (jc%) body of work load cycles per hour range n regular lifting of Class 100 015 1 / 3 rated load 5 Intermediate200025 regular lifting (1 / 3 to 1 / 2) Rated load weight class 400 040 10 regular lifting rated load 20 special heavy duty lifting rated load 700 060 40 for more opportunities for safe use of cranes, the type of work must be considered a reasonable use of the crane. 1.2 Cranes-level work crane level (gb3811-83) is based on use levels and loading cranes are divided into a1 ~ a8-class status. Grade level is used cranes used crane in its useful life characterized by the use of the frequency of the period, the total work cycle times with n said. According to the total number of cycles n, the crane into u0 ~ u910 using grade level. Table 2 is used crane scale. Table 2, the use of crane utilization level of the overall level of work cycles n Note u0u1u2u31.6 × 1043.2 × 1046.3 × 1041.25 × 105 is not often used lightly to u42.5 × 105 regular use u55 × 105 regular moderate use of u61 × 106 is not always heavy use of u7u8u92 × 1064 × 106> 4 × 106 heavy use of the crane's load status of the crane load state and the two factors, one is the actual lifting load and maximum load ratio (pi / pmax), and the other is lifting The role of loading frequency and the total work cycle times than (ni / n) about. That (pi / pmax) and (ni / n) relationship between the value of the load spectrum as the number of kp, which was expressed as: kp = type of pi - the first i-lifting load, i = 1,2,3, ... n ; ni - the role of load times pi; n - the total work cycle times, n =; pmax - nominal weight; m - index; Table 3 is the crane's load status and the nominal load spectrum tables. Table 3 crane load state and its nominal load spectral kp load state description of nominal load spectral kp q2-q1-light weight in q3-q4-special weight 0.1250.250.51.0 little lift rated load, lifting a small general load sometimes lifting load, medium load hoisting the regular general lifting rated load, lifting heavy loads usually frequent lifting rated load under the crane used crane working-level hierarchy (Table 2) and loading conditions (Table 3) to Crane is divided into eight working-level a1 ~ a8. Table 4 is the division of cranes working-level table.Table 4 crane load state level on behalf of the division of spectral load (kp) using rating u0u1u2u3u4u5u6u7u8u9q1-light 0.125a1a2a3a4a5a6a7a8q2-in 0.25a1a2a3a4a5a6a7a8q3-weight 0.5a1a2a3a4a5a6a7a8q4-special weight 1.0a2a3a4a5a6a7a8 sector-level sector-level use in accordance with institutional level (Table 5 ) and institutional load status (Table 6) is divided into m1 ~ m8 level (7). Table 5 rating agencies use rating agencies to use the total service life (h) Notes to the t0200 does not often use t1400t2800t31600t43200 often lightly to moderate the use of regular use t56300 t612500 t725000 infrequent use of heavy use with heavy loads t850000t9100000 Table 6 state agencies and the nominal load spectrumnumber of spectral loading state of nominal load (km) Note l1-light 0.125 agencies often bear the light of the load, the occasional bear the largest load of 0.25 l2-medium agencies often bear the load, and less subject to the greatest load l3-weight 0.50 organizations often bear heavier loads, often by the largest load of l4-special agencies often bear the greatest weight 1.00 load Table 6 in the nominal load spectral km km = the formula for the m - body parts test curve of fatigue index; pi - - The body of work 8 hours exposure to the different loads; pi = p1, p2, p3, ..., pn; ti - the institution to withstand the various load duration (t1, t2, t3, ..., tn) ; Table 7, the state agency on behalf of the working-level load spectral loading (km) agencies use rating t0t1t2t3t4t5t6t7t8t9l1-light 0.125m1m3m3m4m5m6m7m8l2-in 0.25m1m2m3m4m5m6m7m8l3-weight 0.50m1m2m3m4m5m6m7m8l4-special weight 1.00m2m3m4m5m6m7m8
Q
Hoisting safety knowledge
+
A
Crane lifting operations of the general provisions have? ① crane lifting operations before special construction plan preparation, and approved on a technical charge of examination and approval. Crane Erection shall include on-site environmental, engineering situation, construction technology, according to the selection of lifting appliances, lifting mast of the design calculations, design of ground anchors, wire rope and rigging design selection, to the requirements of endurance and road , component stack in place plans and hoist the various protective measures. Ding-way construction program must address the actual situation and the on-site guiding. ② Certificate of crane drivers and training positions must be consistent with the type of crane drivers. ③ crane driver should be familiar with mechanical principles, maintenance rules, safe operation, command signals and strictly comply with them. ④ hand plane to implement the system, strictly implement the shift change the system, non-drivers are not allowed to operate. ⑤ work before, check the wire rope wear, and conduct a comprehensive inspection of lifting appliances. Check the controller and drive unit, brake reliability. Determine the components to operate completely normal before. ⑥ crane lifting weights, not to luffing boom operator, and ranged from no-load operation must be carried out. Can not run when the amplitude, rotation, lifting three kinds of action in any 'kind of action at the same time. ⑦ for the lifting operation must be tested only after the formal lifting crane is correct. ⑧ operation, the case of six or more high winds, heavy rain, snow and other bad weather, should stop lifting operation, the boom down to a safe location. ⑨ to maintain cleanliness and hygiene crane, crane and timely maintenance of oil spills and clean the dirt outside. 10.2 Lifting rope (1) lifting rope factor of safety, security, number of laps and so on is how to request? ① hoisting rope shall meet the different uses of the safety factor. Lifting by means of wire rope safety factors, human-driven, the safety factor of not less than 4.5 times; machinery driver, no less than 5-6 times. ② In the hoist drum wire rope safety circle not less than 3 laps, the end of a rope fixed firmly in the lap of the state to retain 2 should be rated to withstand 1.25 times the pull rope.
Q
The type of gantry crane
+
A
Gantry crane gantry structure is generally based on the main girders, spreader classified form.(1) The sub-frame structure (a) the whole gantry crane: the main beam without overhang, the car within the main span. (B) semi-gantry cranes: legs have height difference, can use the site's civil request. (C) double cantilever gantry crane: The most common type of structure, the structure of the force and the effective use of the site size is reasonable. (D) single-cantilever gantry crane: This structure is often limited because of the venue was chosen. (2) main beam structure divided by (a) single-girder gantry crane: single girder gantry crane cantilever simple structure, manufacture and installation of convenience, its mass is small, the main beam over the rail box-shaped frame structure. And double-girder gantry crane, compared to weaker overall stiffness. Therefore, when the starting weight Q ≤ 50t, span S ≤ 35m, we can use this form. Single girder crane main door gate legs are L-and C-type in two forms. L-type of manufacture and installation of convenience, good mechanical condition , its mass was smaller, but, lifting cargo space through the legs relatively small number of Department. C-type legs raked or curved shape designed to have more horizontal space to make the goods pass the feet. (b ) double girder overhead double girder overhead crane load capacity, span, overall stability, variety, quality and the same, but from the weight of its own single-girder gantry crane to be bigger than, and higher cost . According to the main beam structure is different, can be divided into box girder and truss forms. now more commonly used box structure.
Q
Why does the chain hoist slip?
+
A
When we use chain hoists, we often encounter problems such as slipping, which are also chain hoists. Why is it difficult for our Hebei male elephant chain hoists to slip? Although these words may sound insincere, facts are facts, and Hebei Xiongxiang speaks with facts!Firstly, we should know the reason for the sliding of the chain hoist. The main reason for the sliding of the chain hoist is due to internal parts problems, and the main part that controls the stopping of the chain hoist is the brake device. In the brake device, after the friction plate is worn, it is easy to slip. Therefore, the solution to the friction phenomenon is to replace the friction plate. And the friction plate of our chain hoist is not prone to wear, because it is made of ductile steel, which is relatively wear-resistant. In addition, in order to improve the service life of the friction plate, we should pay attention to daily cleaning when using the chain hoist. Without dust in the internal parts of the chain hoist, there will be no wear and tear, which will increase the service life of the chain hoist.Hebei Xiongxiang has been continuously improving our lifting machinery, always with the original intention of providing customers with products. If you are choosing to purchase chain hoists, what are you waiting for? Hurry up and call our hotline: 13833263771. We look forward to working with you!
Q
Maintenance methods for electric chain hoists
+
A
We all know that even the best chain electric hoists have a lifespan, and chain electric hoists can also shorten their lifespan or even be scrapped due to our lack of maintenance or improper use. Yes, you heard it correctly. Chain electric hoists require maintenance and are mainly divided into two aspects.On the one hand, the chain electric hoist needs to undergo daily technical maintenance, that is, the operator can reasonably keep, conduct daily maintenance, regular maintenance and correct operation of the equipment during use, which can extend the service life of the equipment and improve its application effect.On the other hand, it is periodic technical maintenance, which refers to the maintenance content that cannot be solved by the operator's own conditions and methods, such as repairing or replacing the main components of the machine, conducting medium and major repairs and testing adjustments after a certain period of use, which must be carried out at the designated repair point of the specialized manufacturer and repaired by professional personnel. Maintain the electric chain hoist well in order to use it better.
Q
What is the ordering process?
+
A
1. When the purchase sends an order, it must be confirmed that the other party has received the order.2. If the supplier has placed an order for three days but has not arrived, the store should promptly provide feedback to the relevant responsible person in the procurement department.
Q
What is the difference between the CD1 and MD1 types of wire rope electric hoists?
+
A
What is the difference between the CD1 and MD1 types of wire rope electric hoists?Let's first talk about the CD1 type steel wire rope electric hoist. This type of electric hoist has a lifting speed of single speed, a lifting speed of 8m/min, a running speed of 20m/min, a working level of M3, and a voltage of 380v. The specifications of the CD type steel wire rope electric hoist are generally divided into 0.5 tons, 1 ton, 2 tons, 3 tons, 5 tons, 10 tons, 16 tons, 20 tons, 30 tons, and 50 tons. The lifting height is available in 6m, 9m, 12m, 18m, 24m, 30m, and can be extended and customized.The operation mode can be selected, including manual button type and wireless remote control type.MD1 type steel wire rope electric hoist, this model of electric hoist has a lifting speed of dual speed, with a fast speed of 8m/min and a slow speed of 0.8m/min. It operates at a speed of 20m/min, with a working level of M3 and a voltage of 380v. Therefore, this type of steel wire rope electric hoist is suitable for docking work, precise work, slow speed, and easy docking.In addition, the wire rope electric hoist can be customized with an extended rear drive electric hoist, which is designed for sites that require high lifting heights. Please consult the salesperson for details.Wire rope electric hoist with low clearance wire rope electric hoist takes up small space and is suitable for places with low space height, saving space and improving efficiency.