JQJH 60T 80T 100T 150T Bridge Election Crane for Road and Bridge Construction
JQJH 60t 80t 100t 150t Bridge Erection Crane for Road and Bridge Construction Bridge Election Crane Overview: The bridge election crane is making the prefabricated beam placed on the prefabricated piers. The bridge erection crane machine belongs to the crane category, because its main function...
JQJH 60t 80t 100t 150t Bridge Erection Crane for Road and Bridge Construction
Bridge Election Crane Overview:
The bridge election crane is making the prefabricated beam placed on the prefabricated piers. The bridge erection crane machine belongs to the crane category, because its main function is to lift the beam, and then transported to the position and then put down.In the road, rail orbit, for the whole span of erection of small cross-beam bridge construction. Because of its high efficiency of the bridge erection, in the Chinese railway bridge standard design, and more to consider it as a design principle. Its body is large, beyond the rail transport boundaries, to be disintegrated transport, arrived at the site, and then assembled to use.
China has three kinds of standing bridge erection machine, used for the erection of reinforced or prestressed concrete beams:
I.Single girder erecting machine
One of the bridge construction machinery, the boom is a box beam, forward extension, in front of it has a folding column (composed of the left and right feet). The machine can be carried in the no-load state into the bridge, and then the front column straight, supported in the front pier. When the frame (or the whole beam) moves along the boom, the boom is close to the simply supported beam. Bridge, the aircraft can be carried in the no-load state of the bridge, you must first use the special beam gantry crane from the railway flatbed car to the special transport beam vehicles, and then the beam machine and the bridge machine End of the bit, with the bridge in the bridge crane on the two hanging beam car will be lifted beam, along the arm before the line, arrived at the bridge beam. In order to adapt to the curve of the bridge, the machine's arm can be a small amount of swing in the horizontal plane. The beam-in-position method is the same as the double cantilever bridge machine (moving beam or dialing). The advantages of the machine is: to cancel the balance weight, no longer need to push the locomotive, the beam does not need to bridge the fork, the degree of mechanization, safety performance has improved. Lifting the 130 tons of victory-type bridge machine that is the case.
II.Double cantilever bridge Erection machine
One of the bridge construction machinery, the type of Soviet use earlier. In 1948 the introduction of its front and rear arms are steel beams, hanging weight of 45 tons and 80 tons of two. 50 years, the arms to the framework, lifting development to 130 tons.
This type of bridge machine can not be self, need to use the locomotive push. The forearm used to hang the beam, the rear arm balance weight, front and rear arm can not swing in the horizontal plane. When the bridge is to be used, it is often necessary to use a special 80-ton flat car to transport the beam under the hook of the forearm of the bridge machine (called "feed beam") to lift the fork; line. When the bridge machine lifts the beam, the axle increases, and the new embankment of the bridge is relatively soft. Therefore, it is necessary to take reinforcement measures for the crane section of the bridge crane.
III:Double Beam Bridge Erection Crane Machine:
Hongqi Type bridge machine and Liaoyuan type bridge machine is such a type, lifting weight is 130 tons. The boom is composed of left and right two box girder, two beams through the fuselage and forward and rear ends. At both ends there are folded legs consisting of two legs. Red flag type two beams in the distance of 3.4 meters, compared with the prairie type of 4.8 meters. There are two trusses across the box girders and can travel longitudinally along the boom. The crane beam is placed on the truss and can travel along the truss. The beam (or the whole beam) to be erected can be sent directly to the rear arm of the bridge machine with a railway carriage. After lifting the crane with a crane beam, the carriage is moved forward with a truss and then traversed Bit. In order to adapt to the curve of the beam, the front and rear arms can swing in the horizontal plane; set up when the film does not have to shift beam or set the beam when the direction of the beam, Road, beam can be in place; "feed beam" does not need bridge fork or special beam carrier.
After the beam immediately lay the track, bridge machine can continue to move forward. After the two bridge machines are generally able to pre-assembled rails in place, so that the beam does not work due to laying the track caused delays.
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