How did the tower crane go up? How does a tower crane rise on its own?

3) Thread the wire rope.

The winch wire rope is fixed at the head of the crane through the cab to the pulley group of the tower cap, and the total rope length and the distance between the two pulley groups should be calculated and determined.

4) Erect in front of the tower.

Electrical equipment such as controllers and limit switches should be inspected, and the activity control panel in the control room should be removed and installed on the outdoor bracket to facilitate the operation of the tower.

Clamp the rail pliers and wedge the non-slip wedges under the travel wheels.

In order to strengthen the stiffness of the mast, cross braces can be tied on both sides of the mast.

Before starting, the responsibilities of each post should be stipulated, and the division of labor and command and liaison signals should be strictly enforced. The supervision of the main anchor should be carried out by an experienced lifting officer, and when an abnormal phenomenon such as loosening is found, it is necessary to stop immediately and take measures (a pressor can be added to the anchor).

Start the winch, make the tower body about 200mm away from the wooden stack, stop the machine immediately, and check the integrity of the force of each component.

5) Erection of the tower.

After inspection, it was confirmed that the situation was normal, and the winch was continued to be started, so that the tower body was stably erected, and the wire rope at the auxiliary ground anchor was loosened.

After the tower body stands to 60 °, with the change of the center of gravity of the tower body the winch should gradually slow down, when the center of gravity of the tower body is close to the installation hinge, the winch stops working, and the safety wire rope is tightened with the mobile crane, and the weight of the tower body slowly falls on the skids that have been padded in advance. After the tower body is stabilized, then tighten the safety wire rope to make the tower body slightly crooked, then remove the skid, and then loosen the safety wire rope to stabilize the tower body.

There are four jacks below the tower crane workbench, that is, the upper part of the tower body, the top tower cage (each section of the tower body is called a tower cage) is larger than the lower one (just enough to fit a small tower cage), when it is necessary to heighten, the upper workbench is raised with a jack, and the small tower cage is just added to the big one, the small tower cage is fixed with bolts, and then the large tower cage can be fixed.

The tower crane has its own lifting platform. There is a hydraulic roof. First, the standard section is hoisted on the lifting platform. Then start the hydraulic jack, push the standard section into it when it reaches a certain height, and install the screw.

This one has an electric motor

**, it's full of Tasi, ask inside!

1. Lift the standard section to the ferry trolley, and loosen the bolts connected to the transition section and the standard section of the tower body to prepare for jacking.

2. Start the hydraulic jack, lift the tower crane superstructure, including the jacking sleeve, upwards to the height of more than one standard section, and then fix the sleeve with positioning pins. Therefore, the weight of the superstructure of the tower crane is transmitted to the tower body through the positioning lock.

3. The hydraulic jack is retracted to form the introduction space, and the ferry trolley equipped with a standard section is driven into the introduction space.

4. Use the hydraulic jack to lift the standard section slightly, push out the ferry trolley, and then balance the standard section on the tower below, and connect it with bolts.

5. Pull out the positioning pin, descend the transition joint, and make it connect with the tower body that has been connected to the height as a whole. If you want to connect a number of tower body standard sections at a time, the above process can be repeated.

Tower crane is the most commonly used lifting equipment on construction sites, also known as "tower crane", with a section of the length (height) (referred to as "standard section"), used to lift construction of steel bars, wooden flutes, concrete, steel pipes and other construction raw materials. Tower crane is an indispensable piece of equipment on the construction site.

Directions for use:

Small high-rise below 100 meters, with QTZ5008, 230,000 or so, medium height below 140 meters, with QTZ5013 or QTZ5313, 270,000 to 320,000, high-rise below 200 meters, with QTZ6313 or QTZ7030, 800,000 to 1.2 million or more ** for the market of the middle price, due to different manufacturers and configuration may be quite different.

The tower crane is divided according to the torque, which is roughly divided into QTZ125 (torque 1250).QTZ80 (torque 800).QTZ63 (torque 630).

QTZ50 (torque 500).QTZ40 (torque 400), QTZ25 tower crane.

Most of the construction uses QTZ63, QTZ50 and QTZ40 tower cranes, and tower cranes have been basically eliminated in most provinces and cities.

The columns of the pendant are made up of sections, and the pendant is also very low at the beginning. Whenever you want to increase the height, use a special device to pull one of the "joints" apart (the principle is: the lower end of the device is fixed in a standard section below, the upper end is fixed in the standard section above, and then the upper and lower ends can be supported by hydraulic devices), and then put a standard section of the column into the open space, and then take away the device, and put the upper part down to fix it.

This is how the tall hanging towers grow up section by section.

Tower crane is referred to as tower crane, commonly known as tower crane.

The tower crane can be divided into the following parts according to the function: foundation, tower body, jacking, slewing, lifting, balance arm, boom, hoisting trolley, tower top, driver's cab, luffing, etc., and the foundation part should be installed first when building the tower crane. That is, to determine the erection position of the tower crane, the principle of determination is to maximize the construction capacity of the tower crane, and facilitate the tower crane to enter and exit the site, installation and disassembly.

Then select the appropriate foundation type. The weight and concrete foundation should be made in advance and reach the mark, and the ground endurance of the foundation is not less than 20t per square meter. The base frame and the standard section are then assembled on this basis.

The standard section of the tower crane is the main part that constitutes the main part of the tower crane, and it is also the main "role" of raising the height of the tower crane. During the construction process, the tower crane is accompanied by the elevation of the building, and naturally it also needs to be heightened. When the tower crane is heightened, the sleeve is heightened upwards with the jacking frame first, so as to leave a vacancy between the tower body and the sleeve, and then the tower body is installed in this space.

In this way, the purpose of raising the tower crane is realized.

Precautions for the process of tower crane jacking operation:

1) When the higher wind speed of the tower crane is greater than 3 or 4, the jacking operation shall not be allowed.

2), the jacking process must ensure that the direction of the boom and the introduction of the standard section is consistent, and the use of slewing brake to brake the boom, the truck is parked in the jacking trim position.

Precautions for the process of tower crane jacking operation:

1) When the higher wind speed of the tower crane is greater than 3 or 4, the jacking operation shall not be allowed.

2), the jacking process must ensure that the direction of the boom and the introduction of the standard section is consistent, and the use of slewing brake to brake the boom, the truck is parked in the jacking trim position.

3), if you want to continuously raise several standard sections, then after each section is added, before hoisting a standard section with the tower crane itself, each main chord and the lower support of the tower body must be connected with 8 high-strength bolts, only in this case each bolt is allowed to only have one nut.

4) The steps on the added standard section must be aligned with the existing standard section.

5), before the lower support and the tower body are not connected with bolts, it is strictly forbidden to swing the boom, the luffing of the truck and the hoisting operation.

6) In the process of jacking, if the hydraulic system is abnormal, the jacking should be stopped immediately, the cylinder should be retracted, the lower support should be placed on the top of the tower, and 8 pieces of high-strength bolts will be used to connect the lower support with the tower body, and then eliminate the fault of the hydraulic system.

7) After jacking and adding knots to the required height (not exceeding the relevant standards), the crane arm should be rotated to different angles to check the fastening of each part of the tower body, the foundation feet and the attached tie rod.

Safe construction and jacking operations in strict accordance with the operating procedures are the key.

(1) Lift the standard section to the positive direction of the tower crane and line up, clean the pin hole pin shaft of the standard section, wipe the oil, and carry out the cleaning and refueling test on the hydraulic station. (2) Replace the jacking hook, hoist the introduction trolley, and lift the first section of the tower

<>1. Hang the new bracket up. The process of lifting up is to add a new bracket at the top, and first lift the bracket to the required position. 2. The hydraulic pillar rises.

In the top section, there is a lifting sleeve frame, which controls the hydraulic column, and the jacking plays a certain space, which will make room for the new support to be put in, and then push the already hoisted support to this position. 3. Fixed. The crew needs to go to this small platform in Shenchang to fix the newly added bracket and the bracket below, and make sure that it is fixed firmly and will not fall off halfway.

<> climb up the escalator step by step in the middle of the tower body, or take the construction elevator from the bottom floor to the scaffold erected by the top buttress, from the scaffold to the tower body and then climb the escalator of the tower body, the internal structure of the tower body, in the standard section with a special ladder made of steel, when the building is just started, the driver climbs up from this ladder.

<> climb up the escalator step by step in the middle of the tower body, or take the construction elevator from the bottom floor to the scaffold erected by the top buttress, from the scaffold to the tower body and then climb the escalator of the tower body, the internal structure of the tower body, in the standard section with a special ladder made of steel, when the building is just started, the driver climbs up from this ladder. <

<> climb up the escalator step by step in the middle of the tower body, or take the construction elevator from the bottom floor to the scaffold erected by the top buttress, from the scaffold to the tower body and then climb the escalator of the tower body, the internal structure of the tower body, in the standard section with a special ladder made of steel, when the building is just started, the driver climbs up from this ladder.

The common tower crane on the construction site is so high, how do the tower crane masters go up?

1. Climb up with your bare hands. A tower crane master can be said to have experienced countless times up and down this situation, so normally it is not very difficult to climb up with bare hands, and if the tower crane has just been installed, it will generally not be very high, and the normal volt is about 100 meters, about 33 stories high

I once saw a tower crane master climb up with his bare hands, and the whole process took about an hour, and he needed to take about three breaks, about three to five minutes each time. Although it is very tiring, there is no big problem after getting used to it, and you can basically finish it in an hour or 90 minutes. This kind of gloves need to be worn, plus a safety rope, and finally climb up step by step.

2. Take the elevator on the construction site and climb up with your bare hands. This kind of is quite a force to make force, there will be a temporary elevator on the construction site, the tower crane master only needs to take their elevator to the fixed floor, and finally walk to the tower crane through a self-made staircase, and then climb up with bare hands, so that it is relatively time-saving and labor-saving.

3. Use a crane to send people to a fixed position in a hall, and then climb up with bare hands. This is relatively limited, because you need a crane next to you, in case there is no such condition it is also quite passive, but if there is such a situation, it can still be helped, this method is also very simple is to use the crane to send the tower crane master to a certain height, and finally the tower crane master climbs up through the stairs of the tower crane, relatively speaking, it is also more time-saving and labor-saving, but it will be more restricted, because there is not a crane waiting for you at any time.

It can be said that if you want to reach the tower crane cab, there must be a section that needs to be climbed up by bare hands, which is also the biggest problem of the tower crane at present! The above are some of my personal suggestions and ideas, for reference only, I hope it can help you. If you have other ideas, you can comment at the bottom of the article.