RU65095U1 - SUBMERSIBLE SHOULDER - Google Patents

Abstract

The utility model, a submersible hammer with zolotnik-free distribution, relates to the mining industry, in particular to submersible pneumatic impact machines, for drilling wells for various purposes in underground and opencast mining for the extraction of ores and other minerals. We offer a closed type hammer with a central exhaust comprising a cylinder body; a piston-drummer located in its cavity with air distribution channels dividing the cavity into working and returning chambers; inlet and exhaust pipe; adapter and axle box for fixing the crown tool. The drummer on the outer diameter is made by a stepless cylinder, and a bore is made in the lower part of the drummer to enter the exhaust pipe. An exhaust pipe made by a cylinder with a blind bottom with a hat and exhaust windows is installed in the central hole of the lower part of the piston-hammer with the possibility of axial movement and overlap of the exhaust. Compressed air through the inlet tube and the drum channels is alternately supplied to the working and return chamber, making the drummer move in one direction or another. On the move, the exhaust opening is blocked by the cap of the exhaust pipe and is integral with the piston-hammer, increasing the useful contact area with air, thereby achieving an increase in impact energy. At a certain moment, when the piston-hammer and the exhaust pipe move together, the cylindrical part of it enters the stepped boring of the crown tool and stops the movement of the pipe. The drummer piston, while continuing to move on the move, strikes the crown tool. At a certain moment, the exhaust channels open, through the tube and crown the air is discharged from the forward chamber, and pressure is created in the reverse chamber and the hammer piston moves to the reverse stroke. From the return chamber, air is discharged when the exhaust pipe is raised, when it releases the exhaust channel of the crown.

Description

The proposal relates to the mining industry, in particular to submersible pneumatic impact machines, when drilling wells for various purposes in underground and opencast mining for the extraction of ores and other minerals.

Known submersible hammer with zolotnik distribution of a closed type with a central exhaust containing a cylinder body, a piston hammer, made with air distribution channels separating the cylinder body into two cavities, a supply pipe, an adapter and an axle box for attaching a crown tool with an exhaust pipe.

The presence of a supply tube for supplying energy to the piston-drummer reduces the useful area of the cylinder body used to obtain the maximum possible impact energy. (1, patent No. 45441)

The closest analogue of the claimed model with full use of the working area of the cylinder body is a submersible hammer with zolotnikovy distribution of a closed type with a central exhaust.

Contains: cylinder body, step piston-hammer made with distribution channels that divide the cylinder body into two cavities, an adapter with distribution edges and air supply channels, an axle box for attaching a crown tool with an exhaust pipe fixed to it.

(in the axle box diagram, it is made integral with the cylinder body)

(2, p. 32, scheme No. 1.41)

The advantage of this model is the full use of the working area of the cylinder body with a direct stroke, which allows to increase the impact energy.

The disadvantage and weakness of the hammer is the structural complexity of the piston-hammer made stepwise with internal channels, reducing its strength and durability, which is the cause of frequent breakdowns of the hammer at maximum loads.

The inventive utility model solves the problem of increasing the impact energy of a hammer by using the entire useful area, reducing the complexity of its manufacture, increasing the speed of penetration and durability.

It contains the following distinguishing features from the closest analogue:

The piston-hammer is made on the outer diameter as a stepless smooth cylinder and has a minimum number of internal channels. The distribution tube fixed in the adapter is made shortened.

An additional exhaust pipe with a blank bottom with a cap and exhaust windows is installed in the piston-hammer.

With a direct stroke, the exhaust hole in the piston-hammer is blocked by the cap of the exhaust pipe, increasing the useful contact area with the energy carrier jet, and using the entire working area of the cylinder body to obtain maximum impact energy. Exhaust occurs at the end of the forward stroke through the existing windows in the exhaust pipe and the hole of the crown tool.

The essence of the utility model is illustrated in the drawing, where Fig. 3 shows a General view of the hammer.

The operation of the hammer occurs due to the supply of compressed air energy from the line at the rod set through the adapter - 1, the distribution tube - 2, the piston-hammer cavity - 3 into the forward chamber — A or reverse — B.

When air enters through the channels - B (piston-hammer - 3) into the return chamber - B, the piston-hammer in the cylinder-body - 4 moves towards the adapter - 1 on the return stroke.

If air enters the cavity - G, channels - D and into the forward stroke chamber - A, the piston-hammer moves from the side of the axle box -5, a stroke occurs on the working stroke along the end of the crown tool - 7.

The exhaust from the chamber of the working stroke - A is carried out when the piston-hammer is in reverse motion, through the channel - D, cavity G, the exhaust pipe - 6 and the hole - W of the crown tool - 7.

The exhaust from the return chamber - B occurs through the hole - W of the crown tool - 7, (on the reverse stroke when the exhaust pipe exits the crown hole).

Information sources:

1. Patent No. 45441 published: 05/10/2005. Bull. No. 13.

2. Pneumatic impact machines for sinking wells and holes. N.N. Yesin et al. Novosibirsk: Science 1965

Claims (1)

A submersible hammer with zolotnik-free distribution of a closed type with a central exhaust, comprising a cylinder body, a piston-hammer, made on the outer diameter in the form of a continuously variable cylinder with air distribution channels, a lead pipe, an adapter and an axle box for attaching the tool, characterized in that it has an additional exhaust pipe , blocking the exhaust channel of the piston-hammer on the move and increasing the impact energy through the use of the entire useful area of the cylinder body.