Concrete pump stationary: types and technical characteristics

A concrete pump is a construction device designed to supply a mixture solution to the construction site. The latter he pumps into his bunker from the corresponding tanks. These are concrete mixers or tanks for storage of liquid concrete. With a special tap, the unit can deliver the solution to a rather large height or a long distance, if the delivery is in the horizontal direction. Also, it is used where it is necessary to pour large blocks of concrete. For example, to fill the formwork of a future building, it would take a long time to carry the solution with buckets, if there was no stationary concrete pump. The photo of this device can be seen below.

There are not only stationary concrete pumps

In this article we are talking about mechanisms of stationary type. But a few words should be said about the fact that they are not the only devices intended for pumping concrete.

Auto concrete pumps (ABN) are called devices transported on the chassis of most manufacturers of trucks. Such transportable massive devices are advisable to apply in those cases where it is important to quickly deliver large quantities of solution and quickly transfer equipment to another location. Most often, mobile concrete pumps are used to create the foundation of buildings. In addition, such devices can be much more stationary, and therefore more powerful.

This description of mobile concrete pumps within the framework of this article ends, let's move on to other devices.

Stationary

As already mentioned above, in addition to the mobile there is a stationary concrete pump. Devices of this type are not designed for independent movement in urban roads.

In order for such a pump to be convenient to move within the construction site, it is usually equipped with a chassis. If necessary, the stationary mechanism is transported by trawl or by means of a lorry.

Such devices are often used during the construction of skyscrapers and just tall buildings. As an example, we can cite the world record for delivering concrete to a height using a pump that installed stationary concrete pumps Putzmeister. Record height was as much as 606 meters, which indicates the functionality. Pumps of this type can also deliver concrete over long distances in a horizontal plane.

At the construction site, choose a place in which there is always access for car mixers. This is necessary for timely discharges, because pauses in the operation of the device do not do him good. A concrete system is attached to the unit. In fact, it is interconnected by flexible wide pipes.

The action of the mechanism will cease to be flawless if it is not lubricated with the starting mixture. From this work begins, and this is done all the time, without interruptions. After all, if the solution thickens, a cork is formed in the concrete guide.

If the action requires long pauses, the mixture must be passed through it at least once every 15 minutes.

Structure

In order to ensure timely proper maintenance of the unit, you need to know how the stationary concrete pump is arranged. The technical characteristics of different devices may differ, but they have approximately the same structure:

1. Vibrator grill, which protects the hopper.
2. Grate to protect the hopper.
3. Lubrication system.
4. Sheber.
5. Bunker with a stirring device.
6. Cylinders of the gate.
7. Feed cylinders.
8. Cooling capacity.
9. Cylinders of the drive.

Existing varieties of stationary devices

It does not matter whether you choose a mobile concrete pump or a stationary concrete pump, the characteristics do not depend on the mode of movement of the mechanism, but on the type of its device.

Apparatuses of the second type may have fundamental differences in their device. To know which pump to choose for a particular purpose, this difference needs to be known.

The unit can be a piston. In such a system, concrete is guided through the pipes by means of two pistons. There are also single-piston devices.

In pump-type pumps, the concrete supply system is hidden by so-called curtains, which are located just before the concrete. In the vane devices, a slide knot is installed in place of the curtains.

Devices with a gate

Concrete pump (stationary or mobile, it does not matter) is a gate. The damper (damper) is the main mechanical part of the device. It can be made in the form of a rotary tube, a trunk, a wedge.

The shiber is always made strong and thick. Its surface should be smooth. Otherwise, unevenness will affect the concrete, because at high pressure, which happens in the mechanism, each unevenness leads to the appearance of the solution on the surface.

The damper must also be wear-resistant, otherwise it will quickly fail in such aggressive operating conditions. It is not present in concrete rotor-type pumps.

Rotary

The rotor element is capable of pushing a mixture with a density that the device of another type could not handle. Concrete moves along pipes, guided by rollers in the rotor. Rollers put pressure on the pump with the sleeves, which are compressed and unclenched. This difference makes the rotor apparatus so effective.

The stationary rotary pump of the rotary type is also distinguished by the relatively quiet operation of the engine.

In the case of solidification of the mixture within the tap, it is sufficient to turn on the engine rotation mode in the opposite direction.

Reciprocating

Nowadays two-piston units are used, single-piston systems are gradually disappearing into the past. Such pumps are equipped with a diesel or electric motor.

Stationary diesel concrete pump is capable of providing a high speed of concrete delivery. In a second, such a pump can transfer up to 60 liters of the mixture to the destination.

Over an hour of operation, a standard diesel concrete pump pumps about 60 cubic meters of solution. In the horizontal plane, the mixture can be transmitted up to 300 meters. The height, which is feasible for an average diesel stationary pump, is 70 m.

The two pistons are connected by a hydraulic drive cylinder. The system can be not only hydraulic, but also electrohydraulic, single-circuit and dual-circuit. Each variety has advantages and disadvantages.

How to choose the right one?

How to choose the right concrete pump? The stationary unit can be equipped with a piston system of two types: mechanical or hydraulic. The choice depends on what the customer's goals are.

The construction of each object requires an individual selection of construction equipment. The performance of stationary devices is determined by the principle of the device and its brand. On average, it can vary from 15 to 85 cubic meters of delivered mortar per hour. The maximum height, which can be fed a mixture of concrete pumps of stationary type, is 150 meters. Horizontally, concrete, guided by a pump, can overcome up to 450 meters. In addition to the characteristics of the device itself, it is necessary to take responsibility for the selection of the tap pipes, because the functionality of the entire solution supply system also depends on them.

So, we found out what a stationary concrete pump is. We hope that the information provided will be useful to you.