RU76442U1 - MIXING CHARGING MACHINE - Google Patents

Abstract

Mixing and charging machine, relates to the field of mining, in particular, to the design of mixing and charging machines used for mechanized preparation and loading of wells in open cast mining. The machine includes a transport base with a platform, on which two removable containers for loose component BB are placed, with loading and unloading hatches with lockable covers. The machine also contains dispensers for the components of the explosives, a system for mixing the components and supplying the explosives to the well and the tank with the liquid component of the explosives. Both containers are installed on the platform of the transport base by means of load cells of the weighing system. A manipulator is installed between the two containers for lifting containers with a loose explosive component and loading the explosive component into containers, which are made with lower safety hatches and upper loading hatches with drive mechanisms for the covers and safety ejection diaphragms.

Description

The invention relates to the field of mining, in particular, to the design of mixing - charging machines used for mechanized preparation and loading of wells in open cast mining.

The closest in its technical essence to the claimed mixing and charging machine is a mixing and charging machine for transporting and gravitational loading of wells with bulk industrial explosives, consisting of a transport base with a platform on which a removable container for loose component explosives is placed, with loading and unloading hatches with lockable covers, dispensers of components of explosives, a system for mixing components and supplying explosives to the well and tank with a liquid component of explosives. (RF patent No. 2304756, published. 08.20.2007).

A disadvantage of the known mixing and charging machine is the small capacity of the container for the loose explosive component, the lack of means in the machine for tracking the amount of explosives that are poured directly into the well when it is being charged, the high complexity of loading the loose explosive component into the container when loading the charging machine on the base, and the absence devices providing the necessary operational safety of the machine.

The objective of the invention is to increase productivity when carrying out work on charging wells using a charging machine, as well as improving the operational safety of the charging machine by providing it with devices to prevent the possibility of an explosion when pressure or temperature rises in its capacity for a bulk explosive component.

This object is achieved in that a mixing and charging machine for transporting and gravitational loading of wells with bulk industrial explosives, consisting of a transport base with a platform, on which a removable container for loose explosive component with loading and unloading hatches and with closing covers, dispensers of explosive components , a system for mixing components and supplying explosives to a well and a tank with a liquid explosive component, is equipped with a second removable container for a loose explosive component, installed next to the first container, both containers are mounted on the platform of the transport base by means of load cells of the weighing system. In addition, the machine is equipped with a manipulator for lifting containers with a loose explosive component and loading the explosive component into containers, which are made with lower safety hatches and upper loading hatches with drive mechanisms for covers and safety ejection diaphragms.

To comply with operational safety requirements and to avoid exceeding regulated loads on the roads, the transport base is made four-axle.

To reduce the loss of the granular component of the explosives when moving the machine from well to well, the system for supplying explosives to the well includes a tray directing the explosives into the well with a drive for lifting the tray in the transport position. At the same time, mixing and transportation

screws designed to supply explosives to the tray when loading the well, are located with the rise at an angle to the horizontal.

For the convenience of loading the bulk component BB into containers, the manipulator for lifting containers with the bulk component BB and loading the BB component into containers is made with a drive mechanism and is mounted on a transport base platform between two containers for the bulk component BB.

To increase the safety of staff in case of emergency, a fire wall is installed on the platform of the transport base behind the operator’s cabin.

The utility model is illustrated in the drawing, which shows a General view of the charging machine;

The mixing and charging machine is designed to transport non-explosive components of industrial mixed explosives consisting of a loose explosive component, which is mainly used ammonium nitrate (AS) and liquid petroleum product (NP), as well as for the manufacture of explosives by mixing them and for loading wells open cast mining.

To increase the number of charged wells from a single loading of the charging machine, the machine is based on four-axle chassis specially prepared for the transport of dangerous goods and meeting established requirements. The use of a four-axle chassis made it possible to place an additional removable container for the loose explosive component on the transport base platform without increasing the load on the road surface.

Mixing and charging machine for transporting and gravitational loading of wells with bulk industrial explosives consists of a transport base 1 with platform 2. On platform 2 there are two removable containers 3 for bulk

component BB. On top of each container has a loading hatch, which is closed by a lid 4 having a safety baffle diaphragm. To move the cover 4 there is a special drive, which can be made both hydraulic and mechanical. From the bottom, each container is equipped with a lower safety cast-out hatch designed for self-destruction in case of ignition of a loose explosive component. Both containers 3 are installed on the platform of the transport base by means of strain gauges 5 of the weight system, which makes it possible to track the amount of bulk explosive component shipped when the well is charged. Also, both containers are installed with the possibility of removal for maintenance and repair work. The loading of the loose component BB in containers 3 is carried out using a manipulator 7 mounted on a platform 2 between two containers 3.

The liquid component of the explosive is also located on the platform of the transport base in a special tank 6 from where it is supplied by means of a pump to the mixing system of the components and the supply of explosives to the well. By means of sensors installed in the system of mixing the components and supplying the explosives to the well, the stability of the composition of the mixed explosives loaded into the well is monitored.

The system for supplying explosives to the well (not shown in the drawing) contains a tray guiding the explosives into the well, with a drive for lifting the tray in the transport position, and mixing and transport augers designed to supply explosives to the tray when loading the well, which are angled to the horizontal. This implementation of the tray eliminates the loss of explosives from those residues that remain on the tray after loading the well and were previously lost when moving from well to well. The same result is achieved due to the inclined

location of the conveyor augers. The part of explosives remaining on the screws under the influence of gravitational forces is not lost along the road from well to well.

To protect personnel serving the machine from undesirable factors in case of emergency, a fire wall 8 is installed on the platform of the transport base behind the operator’s cabin.

The operation of the machine is as follows. At the loading point or at the loading station, the bulk component of explosives (ammonium nitrate), usually supplied in a special container, is lifted by the manipulator 7 to the loading hatches 4 of containers 3 and there it is unpacked and filled into containers. In the same place, a liquid explosive component in the form of a liquid oil product is loaded into the tank 6. Mixing - charging machine on its own moves to the place of blasting. Due to an increase in the capacity of containers with a loose explosive component, which accounts for up to 95% of the total volume of explosive components, the number of flights that a machine must make to load it is almost halved. The implementation of the charging machine on a four-axle transport base allows you to increase the capacity of the containers without increasing the permissible axle load. In this case, the transportation of the components to the charging unit and the return of the machine is carried out in accordance with the “Instructions for the Transport of Dangerous Goods” and the “Rules of the Road”.

When loading wells, the bulk and liquid components of explosives are fed to a loading tray (not shown), and when they are fed, they are mixed. The mixture of components representing the finished mixed explosive enters through the tray into the well. The ratio of components is maintained at a predetermined level by an automatic

dosing, or by the operator using hydraulic regulators with control by rotameters and RPM sensors - in manual mode.

The loading process is controlled by the driver-operator from the cab of the car or outside the car. The batch fighter-metering device can control the charging of wells only from the outside (in manual mode).

Claims (5)

1. A mixing and charging machine for transporting and gravitational loading of wells with bulk industrial explosives, consisting of a transport base with a platform on which a removable container for loose explosive component with loading and unloading hatches with lockable covers, batchers of components of explosives, mixing system of components and supply of explosives to the well and tank with a liquid component of explosives, characterized in that the mixing and charging machine is equipped with a second removable container for bulk component EXPLOSIVES installed next to the first container, both containers are mounted on the platform of the transport base using load cells of the weighing system, as well as a manipulator for lifting containers with a loose explosive component and loading the explosive component into containers, which are made with lower safety hatches and upper loading hatches with drive mechanisms of covers and safety expelling diaphragms. 2. Mixing and charging machine for transporting and gravitational loading of wells with bulk industrial explosives according to claim 1, characterized in that the transport base is made of four-axis. 3. A mixing and charging machine for transporting and gravitational loading of wells with bulk industrial explosives according to claim 1, characterized in that the explosive feed system comprises a tray directing the explosive into the well, with a drive for raising the tray in the transport position, and the mixing conveyor augers designed to supply explosives to the tray when loading the well, which are located with the rise at an angle to the horizontal. 4. Mixing and charging machine for transporting and gravitational loading of wells with bulk industrial explosives according to claim 1, characterized in that the manipulator for lifting containers with bulk explosive component and loading the explosive component in the tank is made with a hydraulic drive mechanism and mounted on a transport base platform between two containers for bulk component BB. 5. A mixing and charging machine for transporting and gravitational loading of wells with bulk industrial explosives according to claim 1, characterized in that a fire wall is installed on the platform of the transport base behind the operator’s cabin.