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14
Mar
(1), The machinery parts: The supporting motor, reducer, electrical hoist and the other parts must be maintained as the instructions leaflet provided by the manufacturers. The bearings installed on the traveling mechanism and the moving and fixed pulleys should be filled with the Calcium-based grease monthly. The lubrication oil for the reducer nee...
13
Mar
ZZHZ has very rich experience of producing gantry crane, therefore it gives some advice to operate the electrical system safely: 1. When the gantry crane runs abnormally, the operator must stop the machine to look for the reasons, and remove the faults. 2. When the faults of electric system occur which need to be checked and repaired, the operator...
03
Mar
ZZHZ(zzhz.com) has very rich experience of producing the large duty gantry crane. 1200t gantry crane is the largest tonnage crane for bridge construction of highway and railway in China. It is designed, manufactured and installed by our company independently. a. the structure adopts structure with double box girder types frame and double rigid legs...
01
Mar
Overhead crane span structure moves along the overhead rail track, anti-collision device is one necessary safety device for overhead crane. Anti-collision device of overhead crane is mainly made up of: 1. Distance detection controller Its main function is to deal with signals received by laser sensor and then to correspond relevant motions of alarm...
28
Feb
1, Motor and gear reducer maintenance Check frequently the temperature of the motor housing and bearing parts, the motor noise and vibration condition. In the case of frequent starting, the ventilation cooling capacity will be reduced due to the low-speed, and the current is large. The motor temperature will rise largely soon. So it should be noted...
27
Feb
1. According to the position of design, we should check the end face, linearity and distortion before paving the rail. The installation baseline is confirmed before installation. The installation baseline of rail is equal to the positioning axis of crane beam. 2. When paving the rails, the inaccuracy of actual centerline of rail and steel girder sh...
26
Feb
Checking the hydraulic system Checking mechanisms and parts Checking the lubrication of rotating parts Checking the fuel level and try to run the hydraulic system pour the # 32 hydraulic oil into the fuel tank from oil filling port( old #20) Different brand and different kinds hydraulic oil dont mix together, and filtered every year. Opening the re...
25
Feb
The gantry crane belongs to the large-scale and heavy-duty hoisting machinery with the expensive cost. In order to operate the gantry crane effectively, its necessary to do the regular care and maintenance. In the process of caring and maintenance, the following requirements should be paid more attention: 1, The steel rope shall not be used as the...
24
Feb
Walking bridge girder launcher is made up of main girder, lifting trolley, front legs, middle legs, rear legs, rear bracket, electrical system and hydraulic system etc. 1) Main girder The main girder and guiding girder is made up of bearing girder, front and rear connecting frames. Front and rear connecting frames are made up of transverse girder,...
22
Feb
There are a lot of reasons to cause accidents, but operating factor and equipment factor are the mainly reason: 1) Operating factor a. Unsuitable lifting way to cause unhooking or swing of heavy goods. b. Disobeying the operating rules, such as lifting with overload, someone works in dangerous area etc. c. Wrong command, and inconsistent action etc...
21
Feb
Extruding, striking, hooking and hanging, falling, derailing, collapsing, tilting, fracturing and getting an electric shock etc. are the common accidents of the hoist machinery. Such as the goods gets off from the hook ,the rope fractures , the lifting goods strikes workers, the rope hurts people, the crane slides ,and the crane falls down from upp...
20
Feb
MG gantry crane is the patented product of ZZHZ. It is made up of main girder, legs, crane running mechanism, lifting trolley, ladders, driver bin and electrical system. a. the unique honeycomb girder is the first made in China with light self weight, large load and strong wind resistance. b. mature pin connecting mechanism which is not only firm a...
19
Feb
Checking the connection parts is firm or not. Checking the electrical connection is correct or not. Checking the hydraulic system Checking mechanisms and parts Checking the lubrication of rotating parts Checking the fuel level and try to run the hydraulic system pour the # 32 hydraulic oil into the fuel tank from oil filling port( old #20) Differen...
18
Feb
In order to make sure the bridge girder launcher can be operated safely and prolong its life, ZZHZ (zzhz.com) has very rich experience of producing it; therefore, it can give some advice to us: 1. Organization measure Set up safety leading group headed by general manager. Group leader and group members. 2. Safety training measure to install the bou...
24
Jan
1, Make a completely check on the installed gantry crane, observe carefully if the installation procedures reasonable and correct. 2, Examine the electrical wires connection and limited switches. 3, Look over the mechanical parts, strictly eliminate the clamping phenomenon. 4, Check the lubrication of every rotating parts. 5, Look over the steel ro...
23
Jan
(1)Range of application: The instruction applies to electrical double-girder, single-girder and hoist block gantry cranes. (2) Purpose and characteristics: i. The gantry crane is usually used in outdoor working environment. According to the different occasions, it can be classified as various types including the hook, grab, electromagnetic, hoo...
22
Jan
The gantry crane belongs to the large-scale and heavy-duty hoisting machinery with the expensive cost. In order to operate the gantry crane effectively, its necessary to do the regular care and maintenance. In the process of caring and maintenance, the following requirements should be paid more attention: 1, The steel rope shall not be used as the...
21
Jan
Bridge girder launcher is made up of main girder, lifting trolley, front auxiliary legs, front legs, middle legs, rear legs, middle auxiliary legs ,rear bracket,electrical system and hydraulic system etc. (1)main girder and guiding girder Main girder and guiding girder are made up by front guiding girder,bearing girder and front,middle and rear...
20
Jan
The steel structure is the basic component which is made up of connecting the steel plate and section steel, such as beam, pillar and truss. After delivering to the construction site, to join and install it accomplish the overall steel structure. The joining procedure plays an important role in the steel structure which will directly impact the ins...
17
Jan
The new type of 900T girder transporter made by ZZHZ is jointly developed by our company and the Yanshan University on the basis of the customers requirements. It is a transportation machinery which can operate in the coordination with the bridge girder launcher to accomplish the relevant girder erection task. Also its function can be described in...