Blogs/News/PSAs

Application Field: Works With

The Single-Row Ball type Slewing Ring have four points with one row. They could bear axial load, radial load and tilting moment at the same time. And they are composed of two seat rings, which design in compact structure and light weight, steel ball contact with the circular raceway at four points. There are three types of this kind of single row 4 points contact ball slewing bearing: without gear bearing (non tooth), external crane slewing gear bearing (external tooth), and Internal gear bearing (internal tooth).

Cleverly Change the Lower Bearing of the Tower Crane Slewing

Cleverly change the lower bearing of the tower crane slewing:

1. Firstly, the main rope of the tower crane will be replayed.
2. At 13cm on the flange connected to the bearing seat at the olive-shaped bottom of the rotating body, use a 14mm diameter steel bar to pull the ribs on the four sides of the tower machine in the horizontal direction.
3. At the top four corners of the crane slewing ringplatform, each line has a wire rope buckle with a diameter of 12.5mm, each hanging a 4 ton chain hoist.
4. The four hoist hooks are hung on the angle steel at the lower part of the revolving body at 90 cm. Be sure to hang it up. If there is no hanging point, you can weld a ring with electric welding.
5. After tightening the hoist slightly, remove the connecting bolts of the flange and the bearing seat, the bearing seat and the tower body.
6. Tighten the hoist to create a gap between the parts.
7. Quickly pull out the bearing housing and immediately insert the corresponding thick square wood prepared in advance for the position of the housing that is pulled out.
8. Replace the new tapered tower crane slewing bearingwith the bearing model and add enough butter.
9. Reinstall the parts in place according to the above steps.
10. After removing the temporary fixed steel bars and other objects, they can be tested and put into use.

Slew drive can also be called slew drive gearbox. Most of our slewing ring drive is kind of worm gear reducer. And the slew ring bearing is a gear drive part.

The slewing drive is a full-cycle rotary reduction transmission mechanism integrated with a driving power source. As a professional slew drive manufacturer, Fuyong Intelligent produces high-quality slewing ring drive products! Any inquiry is welcome!

The tower crane is a metal component. It is only necessary to connect the tower crane on the ground at the exit point of the construction foundation, and then dismantle it after completion of the construction. Tower grounding techniques include tower crane foundation grounding, tower crane repeated grounding and lightning protection grounding. The following is a detailed introduction:

Tower grounding techniques 1: Tower Crane Foundation Grounding Method

1. Dig a circular trench (60-80 cm deep and 60 cm wide) around the tower crane foundation at a distance of about 1 meter.
2. (Horizontal grounding body) A circle of galvanized flat steel is enclosed in the trench.
3. (Vertical grounding body) Put a grounding rod into the trench every 2.5-3 meters, and weld the top with flat steel.
4. No less than 2 points of flat steel are welded to the foundation.

Tower grounding techniques 2: Tower Crane Repeated Grounding and Lightning Protection Grounding Method

1.Flash receiving: The tower crane is generally located on the outside of the building, and higher than the building under construction. Because its main body is mostly steel structure, it can use itself as a flash receiving device.
2. Lightning-proof lead-down line: The main body is also steel structure, and can use itself as lead-down line (of course, it is best to set up two lead-down lines which is not less than 50 square).
3. Grounding: Connect the base or track with the grounding grid of the building foundation reliably and form an equipotential body. It is better to install three centralized divergent vertical grounding bodies near the tower crane foundation, and the grounding resistance is not more than 10 ohms.
4. Some tower cranes will be fixed with staircase hoops. At this time, the hoops should be reliably welded with the pressure equalizing ring of the floor.

Ningbo Zhenhai Beisuda Petrochemical Equipment Co.,Ltd located in Ningbo, Zhejiang, it is a professional enterprice, who focus on R&D, production, sales copper clad steel series grounding and copperweld ground rod products.

Lattice Tower concrete placing boom PB38BT-4R-E with the placing boom upper part, combine the function of tower and placing boom. With the rise of the building, the placing boom can increase the standard section by the own climbing frame. When the height exceeds the stationery height, the placing boom will be attached to the wall.

The operation method of this type placing boom become more simplified which can be operated only by 1 or 2 workers by controlling arms with radio remote control and cable remote control. It effects accurately concrete pouring uninterrupted which improving the efficiency and convenience. It also reduces labor intensity and saves on user cost. Compared with other types of column and climbing concrete placing boom, PB38BT-4R-E which Suitable for large construction projects, nuclear power project, grain, oil depots, and other large projects.

Features of Hydraulic Placing Boom

The main electronic components are purchased from the world-famous brand such as Scheider and Omron which make stable and reliable quality.

Combine the function of tower and placing boom. With the rise of the building, the placing boom can increase the standard section by the own climbing frame. When the height is more the stationery height, the placing boom will attached to the wall

Equipped with lifting mechanism, it can lift mast section when climbing.

Four arms design. The machine is fully driven by hydraulic and slew flexibly, with wide working range. Arms adopt high strength steel plate which is stronger and lighter.

Two modes of operation: wireless remote control and cable remote control, easy to operate.

Adopting electric-hydraulic proportional control to guarantee the placing boom more stable and the speed is adjustable.

Intergrated design for pump station and electric control cabinet which installed in the lower support, which is easy for installatioin and also reduce failure rate

The column has an octagonal cross section, lighter weight, and greater bearing capacity.

Each column has universal interchangeability. When adding or reducing columns, it is more convenient to increase or decrease the conveying pipe and ladder.

The boom is a four-section arm made of high-strength steel plate with light weight and high strength. The corner of the arm reaches 210° and the cover the wider working range.

Technical Specifications

Main configuration
1.Max radius:38m; 
2.Boom: 4 sections;
3.Column: 2x10m; 
4.Remote control : Included;
5.Floor frame climbing system;                  
6.With balance arms.

The Lattice Tower concrete placing boom, which combines tower body and boom, shows its respective advantages. The boom can place the concrete and the tower body can be lengthened by adding mast sections. It can rise along with the building by climbing frame and adding mast section. And it can adhere to the wall when the building is higher than mechanical free standing height.

The machine with 4 "R" folding designed arms can slew 360°with wide working range. And it is fully driven by hydraulic system that is flexible to fold and unfold.

Features of Placing Boom Tower Type

Equipped with the electro-hydraulic proportion control with the characteristics of mini-pulse and stable movement. The main electronic components are products of the world-famous brand, with high-quality.

1)Combine the function of tower and placing boom: With the rise of the building, the placing boom can increase the standard section by the own climbing frame. When the height is more the stationery height, the placing boom will attached to the wall.

2)The main electronic components are purchased from the world-famous brand: such as Scheider and Omron which make stable and reliable quality.

3)Two modes of operation: wireless remote control and cable remote control, easy to operate.

4)Flexible and quick up set-up: adopting electric-hydraulic proportional control to guarantee the placing boom more stable and the speed is adjustable. Four arms design. The machine is fully driven by hydraulic and slew flexibly, with wide working range. Arms adopt high strength steel plate which is stronger and lighter. Each column has universal interchangeability. When adding or reducing columns, it is more convenient to increase or decrease the conveying pipe and ladder.

5) Humanization design: the column has an octagonal cross section, lighter weight and greater bearing capacity.

6) Soud construction: The boom is a four-section arm made of high-strength steel plate with light weight and high strength. The corner of the arm reaches 210° and the cover the wider working range.

Application of Placing Boom Tower Type

Lattice tower type concrete placing boom is the perfect combination of tower body and boom assembly: which provides professional solutions for high buildings and large-scale constructions.  Equipped with hoisting mechanism and climbing frame, lattice tower type concrete placing boom can reach the height as required. Also it can rise along with the building by adding mast sections and tie-in . Main applications are those that can't be achieved by inner climbing type concrete placing boom, such as chimney, bridge, etc.

This hydraulic climbing type is ideal for high rise buildings, bridges and dams. Placed on tubular columns, they can climb up automatically with self-climbing device, enabling the concrete to be delivered exceptionally fast and cost-effectively.

Our Service

Faster speed of response of service

Modern transportation such as by sear , by air or by railway.

make sure that all spare parts got delivered in time.

Apart from supplying only the best quality products,

We also have available our technical and management solutions.

Our after-service teams always providing you with a full range of services.