CZ2011170A3 - Fire extinguishing and penetrating set - Google Patents

Abstract

BACKGROUND OF THE INVENTION The present invention relates to an extinguishing and penetrating assembly, wherein the drilling unit (22) is connected to a spray head (1) provided with a drilling and centering mandrel (2) connected to one end of the inner hollow shaft (3) by means of a freewheel clutch (5), wherein at the other end of the inner hollow shaft (3) there is a rotary inlet (8) for extinguishing water, wherein the internal hollow shaft (3) of the tapping and centering mandrel (2) is housed in a pair (6) of rolling radial bearings and one axial rolling bearing ( 7) which, by their outer surfaces, are located in the outer hollow shaft (9), wherein in its central part there is an external groove (10) and in front thereof, towards the spray head (1) there is a section with an external movement thread (11), wherein, in the outer hollow shaft (9) with the outer grooves (10), an extensible tube (12) is displaceably disposed at its end with internal lips (13) and an internal movement thread (14) of the extending tube (12); wherein the telescopic tube (12) is rigidly connected to the core (15) of the drill bit (15), wherein the outer hollow shaft (9) is mounted in a radiaxial bearing (20) mounted in the fire extinguishing frame (19). On one side of the internal hollow shaft (3), a spur gear (16) is firmly connected to it, into which a first rotary hydraulic motor section (4) engages the mandrel, which is fixedly connected to the frame (19) by a cage (21). In the crown gear (17), the second rotary hydraulic section (18) engages the crowns, which are fixedly connected to the frame (19) via the cage (21).

Description

Fire extinguishing and penetration unit

Field of technology

The invention relates to fire-fighting and emergency techniques where working conditions are difficult, such as heat, dust, combustion products, etc., and access to the source of combustion is required despite the building envelopes, which may be made of bricks but also, for example, concrete. or reinforced concrete.

State of the art

Previously known devices for this purpose are, for example, a mechanical piercing head combined with a fire-fighting head. Conventional manually operated drilling machines are also used to penetrate the walls.

The disadvantages of these devices are the need to use demolition machines, which pierce the building envelope with the head. The control of the demolition machine is not precise, there is a lot of damage to the building and such a device cannot be used, for example, to create an opening to ensure air access to people trapped by fire. Hand-used drilling machines can only be used to a limited extent where a person can go, especially in places where there is a risk to the health or life of the operator.

The essence of the invention

The above disadvantages are eliminated by the fire extinguishing and penetration unit, where the drilling unit is connected to a spray head provided with a drilling and centering mandrel, which is connected to one end of the inner hollow shaft by a freewheel, the other end of the inner hollow shaft wherein the inner hollow shaft of the drilling and centering mandrel is mounted in a pair of rolling radial bearings and one axial rolling bearing, which are mounted in the outer hollow shaft by their outer surfaces, with the outer groove in its middle part and in front of it, • · · · · · · · · · Towards the spray head, there is a section with an outer drive shaft, the outer hollow shaft with outer grooves is slidably mounted. to the core, the outer hollow shaft being roll mounted in a radial bearing which is mounted in the core the frame of the fire extinguishing and penetration unit, the essence of which is that on one side of the inner hollow shaft a mandrel gear is firmly connected to it, into which the first section of the rotary mandrel hydraulic motors engages, which is firmly connected to the frame by a cage.

It is further advantageous that the second section of the rotary hydraulic motors of the crown, which are firmly connected to the frame by means of a cage, engages in the crown gear.

The advantage of the proposed solution is the relatively low weight of the fire extinguishing and penetration unit, which allows it to be placed on the support arm and on the vehicle chassis, as well as remote control outside the source of danger. The design of the device allows the penetration of very strong building material (reinforced concrete) and thus ensuring access to the fire and its extinguishing.

Overview of figures in the drawings

There is a picture and a legend on the attached sheets.

Figure 1 shows the device in axonometric views and in section in the state of insertion and extension of the drilling head.

DETAILED DESCRIPTION OF THE INVENTION

The extinguishing and penetration unit, where the drilling unit 22 is connected to a spray head 1 provided with a drilling and centering mandrel 2, which is connected to one end of the inner hollow shaft 3 by a freewheel 5, the other end of the inner hollow shaft 3 having a rotary fire water, the inner hollow shaft 3

of the drilling and centering mandrel 2 is mounted in pairs 6 of roller bearings 6 and one axial roller bearing 7, which are mounted in their outer surfaces in the outer hollow shaft 9, in its middle part there is an outer groove 10 and in front of it, towards the spray head 1. , there is a section with an external movement thread 11, wherein in the outer hollow shaft 9 with external grooves 10 a sliding tube 12 is slidably mounted. a crown 15 on the core, the outer hollow shaft 9 being roller-mounted in a radial bearing 20, which is mounted in the frame 19 of the fire-fighting and penetration unit.

On one side of the inner hollow shaft 3, a mandrel gear 16 is firmly connected to it, into which the first section 4 of the rotary mandrel hydraulic motors engages, which is firmly connected to the frame 19 by means of a cage 21.

The second section 18 of the rotary hydraulic motors of the crown engages in the gear wheel 17, which are fixedly connected to the frame 19 by means of a cage 21.

Function:

The spray head 1 allows the final transport of the extinguishing medium to the fire. Transport through the drilling unit 22 is realized by an inner hollow shaft 3, into which the extinguishing medium is introduced via a rotary bushing 8. Mutual rotational movement of the inner hollow shaft 3 and the outer hollow shaft 9 is enabled by a pair of radial bearings 6 and an axial bearing 7. the gap between the outer cylindrical surface of the inner hollow shaft 3 and the inner cylindrical surface of the outer hollow shaft 9. The rotary movement of the outer hollow shaft 9 is enabled by a radial bearing 20. The first section 4 of the rotary hydraulic motors and the second section 18 of the rotary hydraulic motors are connected to the frame 19 via a cage 21. · Drilling:

The first section 4 of the rotating hydraulic motors of the mandrel and the second section 18 of the rotary hydraulic motors of the crown rotate by means of the gear wheel 16 of the mandrel and the gear

wheels 17 crowns with inner hollow shaft 3 and outer shaft with bodies in one's direction at the same speed. In this operating mode, the inner hollow shaft 3 of the drilling and centering mandrel 2 must rotate in the direction of engagement of the freewheel clutch 5 of the drilling and centering mandrel 2.

Drilling:

After drilling, the first section 4 of the rotary hydraulic motors of the mandrel 4, and the second section 18 of the rotary hydraulic motors of the crown, firmly connected to the frame 19, run to the opposite side but with different speed and the drill bit to the core 15 therefore of the movement thread 11 of the inner hollow shaft 3 to the inner movement thread 14 of the extension tube 12. By this relative movement, the inner tongue 13 of the extension tube 12 and the outer groove 10 of the outer hollow shaft 9 come into operation, thereby causing relative movement of the extension tube 12.

A core drill bit 15 is mounted on the extension tube 12 in a fixed but replaceable manner.

At the same time, an internal movement thread 14 is formed on the outer grooves 10 of the extension tube 12, so that it can also engage in the external movement thread 11 of the outer hollow shaft 9.

Industrial applicability

The invention can be used to extinguish inaccessible areas of prefabricated buildings, where the intervention must be carried out through perimeter walls of concrete or reinforced concrete, and it can also be used for passage through walls of brick or similar materials.

Claims (2)

Patent claims A fire extinguishing and penetration unit, wherein the drilling unit (22) is connected to a spray head (1) provided with a drilling and centering mandrel (2), which is connected to one end of the inner hollow shaft (3) by means of a freewheel coupling (5), at the other end of the inner hollow shaft (3) there is a rotating connection (8) for extinguishing water, the inner hollow shaft (3) of the drilling and centering mandrel (2) being mounted in a pair (6) of rolling radial bearings and one axial rolling bearing (7) ), which are accommodated by their outer surfaces in the outer hollow shaft (9), in its middle part there is an outer groove (10) and in front of it, towards the spray head (1), there is a section with an external movement thread (11), in the outer hollow shaft (9) with outer grooves (10) a sliding tube (12) is slidably mounted, provided at its end with inner lips (13) and an internal movement thread (14) of the sliding tube (12), the sliding tube (12) being firmly connected to the drill bit (15) on the core, the outer hollow shaft (9) being va mounted in a radial bearing (20) which is mounted in the frame (19) of the fire-fighting and penetration unit, characterized in that on one side of the inner hollow shaft (3) a mandrel gear (16) is firmly connected to it, into which engages the first section (4) of the rotary mandrel hydraulic motors, which is firmly connected to the frame (19) by means of a cage (21). 2. The fire-fighting and penetration unit according to claim 1, characterized in that the second section (18) of the rotary hydraulic motors of the crown engages in the crown gear (17), which are fixedly connected to the frame (19) by means of a cage (21).