A processing method on the basis of the tower crane

1. In front floor mat concrete tower crane  earthwork excavation, so Taki top elevation below the bottom end elevation 120mm, which is reserved for settlement.
   2. Press the tower crane foundation construction tower construction plans until after a certain intensity installation crane.
   3. Taki four weeks cushion concrete construction. Taki top with clayey soil cover 100mm, add a touch of 20mm mortar, the entire pad on the same elevation level.
   4. According to the drawings floor, floor muscle (double two-way) are passing through the bottom section of the tower crane; the paint when poured concrete floor, rust cleaned, and the welding of this section standard section waterproof plate poured in concrete.
   5. Standard sections can be cut from the floor over time removed.

The only disadvantage of the above approach is to cut off a section standard section. Do not stay if cut standard section, then pouring the concrete floor of the tower location is not poured until the Chai Wan crane then pouring this concrete, but this resulted in the floor construction joints, while there may be a large number of groundwater infiltration in the basement during construction, waterproofing need to make sure, otherwise not conducive to the construction and safety. By Taki Regardless natural foundation or pile, this approach will adapt. The company has a total of two towers have two podium engineering application of this approach, the effect is very satisfactory.

   

Tower Crane-based approach

Tower Crane plays an extremely important role in the building construction, especially for high-rise building construction, is the most important vertical transport machinery. So layout crane design, compact, will give the construction safety, progress has brought direct benefits, and can save secondary transport cost savings. Depending on the layout of the building crane due to circumstances and should, vary. Outside the building layout, tower crane foundation is not linked with the building structure, does not destroy the integrity of the structure, the construction is also very convenient. Single high-rise buildings, while the podium is small in size, the crane can be arranged outside the building. But larger podium, I want to share one or two high-rise tower cranes, for the crane operating radius can cover the entire project, and often need to be arranged between the two buildings crane, tower crane foundation so it must be attached to the basement floor together.

General practice are:

   1. Based on the construction front floor construction, the floor through the foundation, the foundation around the steel plate aside. The advantage of this approach is to be installed in the front floor construction crane good, which can make full use of crane transport steel, template, concrete and other materials at the time of the floor construction. But the biggest drawback is the basis for four weeks set aside a construction joint, on the floor seepage is a risk, it is also detrimental to the structural integrity; and because the floor is not designed crane loads, so the need for the local parts of the floor structure reinforcement.

   2. After pouring the concrete foundation plate construction. Its advantages are: convenient construction, without leaving dowels, no floor construction joints. Disadvantages are: (1) can not use the crane transport substrate material; (2) because the thickness of the bottom plate thickness is generally not enough Taki, so the foundation concrete floor up a large portion of this need concrete chisel off large quantities; (3) The same need for structural reinforcement of the floor.

Screw conveyor using

Screw conveyor, mainly used in concrete mixing station project in transport cement, fly ash and other materials, mineral, feed, grain, construction industry uses a broader transportation equipment, screw conveyor are all made of steel , mainly used for a variety of high temperature powder, granular and small block and other loose materials, such as chemical, building material products.
The machine screw diameter is small, high speed, high throughput, accuracy, good transport conditions. Drive with gear reducer with torque, low noise, no oil leakage, long life, high quality seamless delivery shell, flange connection.

Screw conveyor machine rigidity, large carrying capacity, at the time of delivery, whether it is the level of transmission, or large angle can be continuously fed, and free choice of work location and working conditions, easy disassembly repair, safe and reliable, is a new generation ideal environmentally friendly products.
And can freely choose to work location and work attitude, no dust leaking sinks, safe and reliable. After receiving the central tube, you can achieve complete balance, double pitch design to reduce the extent of the material is compressed in transport, especially for long distance transport or cement and other powder materials.
Its design, with torque, low noise, no oil leakage, long life characteristics. Installation easy to adjust the steering, while the high tightness, but also ensure the connection strength

Concrete mixer Handling Precautions

Concrete mixer Handling Precautions:

1. concrete mixer should be set at a flat position, with square wooden paving around the axle of the tire put high overhead, avoid walking in motion occurs.

2. concrete mixers secondary leakage protection should be implemented after the power is turned on before work must be carefully examined by the turn that the empty test qualified before use. Commissioning tests should be mixed with drum speed is appropriate, under normal circumstances, the proportion of empty vehicle speed (after charging) slightly faster 2 to 3 revolutions, such as a difference of more, should be adjusted to move the wheel and drive wheel ratio.

3. the direction of rotation of mixing drum should be consistent with direction of the arrow, as inconsistent with reality, should be corrected electrical wiring.

4. Check the drive clutch and brake is flexible and reliable, wire rope for damage, pulley track is good, there is accessibility and various parts of the lubrication and other surrounding circumstances.

5.boot, always pay attention to the various components of the concrete mixer operation is normal. Shutdown, always check whether a clincher concrete mixer blades, whether or loose screws have knocked.

6. when the concrete mixing is completed or is expected to be more than expected 1 stop outside the net, use stones and water poured into the shaking cylinder, power rotation, to stick to the barrel of the mortar discharged completely clean after flushing. You may not have water in the barrel, in order to avoid the barrel and leaf rust. It should also clean up outside the mixing tube fouling, the mechanical clean intact.

7. after work and do not stop, it should wind up its power, and lock the switch box to ensure safety.

The basic rules of concrete mixer

Commodity concrete mixing machine basic rules:

1. Concrete mixing machine should be placed in a solid place, with a stand or feet creel stable. Allowed to replace the tire support.
2. before the start mixing machine should check the controller and the parts is good. It shall be a foreign body in the drum.
3. mixing machine when the hopper is raised, strictly prohibited by or stays in the hopper. After the work is completed shall be fixed mixing hopper.
4. the mixing machine running, the tool inserted into the inner cylinder is strictly prohibited.
5. site maintenance, should be fixed mixing hopper off the power. When entering the mixing machine drum, outside should someone custody.