RU2357858C1 - Forming machine for straight-line production of reinforced-concrete items - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: invention relates to construction, particularly to production and manufacture of construction structures from concrete and reinforced concrete. The forming machine includes chassis where frame is installed. The frame houses loading hopper and operating hopper. The latter are intended for concrete mixture receiving and transporting to mold box for vibratory compacting. Cover die and positive dies, smoothing units, vibrators and rubber-profiled mechanisms for beveling are placed inside the above-mentioned mold box. Vibrators are mounted on the frame. The controlled electric drive is a tool for chassis actuating. Besides the chassis speed depends on the formed item density to be measured by density probe connected to the circuit of electric drive control.

EFFECT: improved effectiveness of machine, avoidance of probability to break production process, quick change of machine loading rate with concrete mixture and formed items dimensions.

5 cl, 3 dwg

Description

The proposed invention relates to the field of construction, in particular to installations for the manufacture of concrete products by continuous formless vibrocompression, mainly reinforced concrete slabs, beams and crossbars.

Closest to the claimed invention is a molding machine (RF patent No. 2177876, publ. 10.01.2002), which is intended for in-line production of concrete and reinforced concrete products by formless vibrocompression. The well-known molding machine for continuous formless molding of concrete and reinforced concrete products contains a chassis on which is installed a frame with loading and working bunkers located on it, designed to receive concrete and move it into a mold for vibrocompression, dies and punches with the possibility of replacement, smoothing device and means for chamfering in the form of rubber profiles, as well as means for setting the chassis in motion.

However, the known molding machine does not provide for non-stop operation without disruption of technology, because its speed throughout the cycle does not depend on the real state of the molded product, which can lead to marriage, in addition, the well-known molding machine does not provide for the possibility of quick replacement of the receiving hopper.

An object of the present invention is to provide such a molding machine. The technical result consists in eliminating the possibility of violation of the technology of molding the product, and also allows you to quickly change the load of the machine with concrete mixture and the dimensions of the molded products and thereby increases the efficiency of use of the molding machine.

In this case, the technical result is achieved by the fact that the molding machine for continuous formless molding of reinforced concrete products contains a chassis on which is installed a frame with loading and working bunkers placed on it, designed to receive concrete mix and move it to the mold for vibrocompression, in which the matrix is placed and punches made with the possibility of replacement, a smoothing device, vibrators and means for chamfering in the form of rubber profiles, as well as means for bringing I chassis in motion, while the vibrators are mounted on a bed, and the means for setting the chassis in motion is an adjustable electric drive, while the speed of the chassis depends on the density of the molded product, determined by the density sensor installed in the drive control circuit.

The working hopper of the forming machine can be made adjustable in width due to its collapsible by means of detachable joints of the walls and the bottom.

Also, between the loading and working hoppers, a frame made to move along rails can be placed to maintain the level of concrete mixture in the molding machine, while the loading hopper can be arranged to be placed in the frame.

In addition, the working hopper can be equipped with a screw and a concrete level sensor.

However, rubber profiles may have springs that are adjustable.

The drawings show one example of a molding machine of the present invention.

Figure 1 presents a General view of the forming machine;

figure 2 is a fragment of a molding machine with spring-loaded

chamfering tools (door closers);

figure 3 - working hopper.

The molding machine according to the present technical solution comprises a loading hopper 1, a working hopper 2 and a frame 3 capable of moving along rails 4 to replace the loading hopper when replacing a molded product. The molding machine moves along rails (not shown) using wheels 5 and 6, forming together with the frame 7 a movable chassis 8. The chassis 8 is designed to move along rails (not shown) lying on the track, which during operation becomes the bottom of the vibration form 9, in which the punches 10 are installed (interchangeable due to the use of detachable joints), the side walls of the vibroform 11 and the upper plate 12 form, together with the bottom of the vibroform, a closed volume, which is also a matrix, in which the product is molded. Vibrators 13 with electric drive 14 are installed on the bed; the vibration frequency is chosen so that it is possible to produce high-quality molding over the entire volume of the vibration form. The lower part of the working hopper 2 and the load 15 are mounted on the upper plate of the vibroform 12. The molding machine has a device in the form of rubber profiles 16 for chamfering the springs 17, the springs (spring tension) can be adjusted, for example, with the help of nuts, the device 16 acts as an adjustable closer. The working hopper 2 is made in the form of a box with a beveled wall for guiding the concrete mixture and has a screw 18 with an electric drive 19 inside it to increase the homogeneity of the mixture and a probe 20 with a concrete level indicator 21. The cross section of the working hopper can be changed in width due to its assembly - collapsible using detachable joints of the walls and the bottom. The device also has a guide form 22 and hydraulic cylinders 23 for moving the movable elements of the machine. The chassis of the forming machine moves from an adjustable drive (not shown, because it can be installed both inside the machine and outside as a traction for the winch, which is not essential), the speed of the chassis is connected and depends on the density of the molded product due to the density sensor installed in the drive control circuit. For this, any known density sensor may be used. The control of the speed of movement of the chassis 8 with a speed depending on the density of the molded product, improves the quality of the molded products. The speed can be adjusted by the operator, for example using a potentiometer, or in automatic mode. The choice of a specific regulation scheme is associated with the range of molded products and is not the subject of this technical solution. Vibrators can work both in synchronous and in asynchronous mode. Frame 3 is designed to maintain the level of concrete mixture in the molding machine, made in the form of a frame into which the loading hopper 1 is inserted and which, moving along the rails 4, controls the level of the concrete mixture.

Products are molded on a heated metal floor and reinforced with a prestressed wire. Concrete is loaded into the loading hopper of the forming machine, the electric drive and vibrators are turned on, and the process of continuous molding of the product along the entire length of the track begins. The molding machine moves along the rails and leaves behind a continuous reinforced concrete strip, which is then cut into pieces of the desired length. Machine weight 3000 kg, installed power 15 kW, travel speed 0.65-3 m / min.

The possibility of changing the vibration form obtained through the use of detachable joints, as well as the use of interchangeable punches, the possibility of replacing the loading hopper and adjusting the cross section of the working hopper, as well as the ability to replace punches, can significantly expand the range of molded products on one machine from 6 cm to 350 cm in width and a height of up to 40 cm. Moving the chassis at a speed that is controlled by an electric drive depending on the density of the molded product significantly improves the quality of iron production ton products.

Claims (5)

1. A molding machine for continuous formless molding of reinforced concrete products, comprising a chassis on which a bed is installed with loading and working hoppers placed on it, designed to receive concrete mix and move it to a vibrocompression mold, in which a matrix and punches are arranged, made with the possibility of replacements, a smoothing device, vibrators and means for chamfering in the form of rubber profiles, as well as means for setting the chassis in motion, characterized in that the vibrators are mounted ovleny on the frame, and means for actuating movement of the chassis is adjustable actuator, wherein the chassis speed is dependent on the density of the molded article, determined density sensor installed in the motor control circuit. 2. The molding machine according to claim 1, characterized in that the working hopper is made adjustable in width due to its collapsible by means of detachable joints of the walls and the bottom. 3. The molding machine according to claim 1, characterized in that between the loading and working hoppers is placed to maintain the level of concrete mix in the molding machine, the frame is made to move on rails, while the loading hopper is made with the possibility of placement in the frame. 4. The molding machine according to claim 1, characterized in that the working hopper is equipped with a screw and a concrete level sensor. 5. The molding machine according to claim 1, characterized in that the rubber profiles have springs, which are made with the possibility of regulation.

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