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16
Jan
(1) feature 1. without limit of geographical conditions, the simple gantry for lifting girder changes traditional construction way to lift concrete girder by using gantry crane and crane 2. with simple operation and low cost, it solves below problems: a. gantry crane can not be transferred to any site, with assembly and disassembly, it costs a larg...
15
Jan
Step 1: 1. After stretching the box girder, remove scattered formwork and side formwork equipments at top of the pier 2. Remove vertical, horizontal connection bolts in the boom, bottom formwork and lateral formwork, remove transverse joint bolts in the formwork 3. Hydro-cylinder in the auxiliary support leg stretches out to the bridge, cylinder in...
14
Jan
With the development of our national economy, the construction of high speed railway reaches unprecedented upsurge. For 10 years, ZZHZ has been involved in manufacturing construction machinery and hoisting machinery. Therein, bridge girder launcher and gantry crane are widely used in high speed railway construction, being awarded the national paten...
13
Jan
Safety devices of gantry crane make gantry crane work well. They can raise the alarm and index signal to quickly deal with the breakdown and dangerous situation in order to avoid accidents, maintain normal protection and protect life safety of employees. So, it is necessary to design and install safety devices. 1. Ascending limiting position limite...
10
Jan
Movable support system is a kind of construction machinery to install bridge girders by way of cast-in-place with its own formwork, supported by box girder. Bridge girder launcher realizes bridge construction if the girder carrier transports the prefabricated concrete girder to the rear part of the launcher. Difference between movable support syste...
09
Jan
1. Bridge girder launcher is a equipment that helps put prefabricated precast girders on prefabricated piers. It lifts the precast girder slabs, transports them to specific location and drops them, so it is included in cranes. But there is a strict demand on the bridge girder launcher, because it needs to move on the precast girders (longitudinal m...
08
Jan
In order to make sure the single girder overhead crane can be operated safely and prolong its life, ZZHZ(zzhz.com) has very rich experience of producing overhead crane ; therefore, it can give some advice to us: a. Pay attention to working condition and lubricating situation, if there are abnormal things or noises, we should stop and check. b. We s...
07
Jan
1. How about the payment terms? Pay 50% of the total price by T/T after signing the contract, another 50% will be paid by L/C at sight 2. How about the time arrangement? We will set (50+50)T gantry crane as an example, it will be shipped to Djakarta, Indonesia from Zhengzhou, China a. After signing the contract, we will arrange to produce products....
06
Jan
According to field working condition in Singapore, combined with ZZHZ successful design experience of bridge girder launcher, HZQ59/80 segmental assembly bridge girder launcher is designed as honeycomb type double girder machine, which features as below: 1. Unique honeycomb girder, features light self-weight, large load, strong wind resistance abil...
04
Jan
It is a bridge construction machinery which moves along the pre-laying rails to erect the concrete girders. Because of its high efficiency, its design principle has been considered fully in the designing process of the China Railway Bridge Girder. It owns the large body and has exceeded the railway transportation limit, so it must be dismantled whi...
03
Jan
10t single girder gantry crane with electric hoist is made up of main girder, support leg, electric hoist and electric elements. Heavy load and overload test of gantry crane in the debugging period shall be done to ensure the safety of the equipment and workers. Heavy load test can be conducted after finishing moving test and lifting test of electr...
02
Jan
Below safety cautions shall be kept in mind anytime to ensure a safe working environment and a normal operation. 1. Though brakes are installed on the gantry crane moving system, the rail layout should be in a horizontal direction. If certain slope is needed, users should prepare reliable anti-slip facilities. It is prohibited to operate the gantry...
31
Dec
CD1 and MD1 series wire rope electric hoist are widely used and very popular among users because of their characteristics of tight structure, smart body, safety and reliability, common-used parts, well changeable property, strong lifting capacity as well as convenient maintenance. The hoists exist in form of stationary style and crab-style. The for...
30
Dec
CD1 electric hoist installed on many kinds of cranes of suspending from T-steel and joist steel can lift heavy objects straight or in a curve. The stationary ones installed on fixed trestle can lift objects vertically or from different angles. The products are widely used at industrial ore enterprises, railway, harbors, warehouses and materials sit...
28
Dec
After ZZHZ cranes are sold, strict and perfect after-sale service will be done immediately. 1. Installation and commissioning. After cranes are transported to worksite abroad, we will send one or two technicians to guide installation and commissioning. But the buyer shall be responsible for their round way tickets, foreign communications fee for wo...
27
Dec
Check and preparation before installation of electric hoist is quite important to ensure a smooth, safe and fast installation. a. Check and accept according to the packing list after the electric hoist arrives at the installation site. then examine whether there are damaged or lost components during the courses of transportation b. read carefully t...
26
Dec
1 The rail frame used for the movement of the electric hoist is selected and designed according to standard GB706-88 by users themselves. Adjust the electric and driven bogies with spacers when installing to ensure the space between the wheel edge and rail flange is 3-5mm 2. In accordance with different hoists, please install the electrical equipme...
25
Dec
1. Test with no load 1.1 Press relevant button and check whether the movement of all mechanism complies with marked sign on the button. If tight, try again for two cycles continuously. 1.2 Raise or lower the hook to the limited positions and check whether the position limiter is reliable 1.3 Click the button and confirm the running distance of the...
24
Dec
Cranes such as gantry crane, launching crane and overhead crane especially demand a high quality with special strict demands. To be responsible for workers and equipment, ZZHZ adopts below quality control measures: 1. During raw material purchasing process, check the steel materials by combining physical testing and chemical analysis to ensure its...
19
Dec
Below safety cautions shall be kept in mind anytime to ensure a safe working environment and a normal operation. 1. Though brakes are installed on the gantry crane moving system, the rail layout should be in a horizontal direction. If certain slope is needed, users should prepare reliable anti-slip facilities. It is prohibited to operate the gantry...