RU35553U1 - CUTTER HOLDER WITH INTEGRATED NOZZLE - Google Patents

Description

CUTTER HOLDER WITH AN INTEGRATED NOZZLE The utility model relates to mining, namely to a mechanized combine mining of minerals in underground mining faces, in particular on coal seams.

One of the requirements for the design of the executive body of a narrow-cutter shearer is to ensure irrigation of the array destroyed by the cutters, dust suppression and suppression of sparks formed when the cutters meet solid inclusions. This is achieved by installing nozzles along the perimeter of the actuator, guiding the jet of water supplied to them into the contact zone of the cutters with the array. The most effective dust suppression and spark suppression are ensured when nozzles are mounted in the tool holder directly behind the tool, since the jet of water or the air-water mixture is as close as possible to the place of dust and spark formation.

A known holder of a cutter with a built-in nozzle, including a fist with a main hole in which the sleeve is located, a socket, the axis of which is located in the plane of symmetry of the fist above the axis of the main hole, and the front face of the socket is located behind the front face of the main hole, and with at least one channel connecting the lower edge of the fist and the socket, as well as a cutter located in the bore of the sleeve, and a nozzle placed in the socket and provided with an internal cavity hydraulically connected to the channel in the fist (US Patent JV 6247759, NC E21S 035/187, publ. 19.06.2001). The nozzle is hydraulically connected through the channel in the fist with an annular groove in the main hole, and the nozzle, in turn, through the other channel with the lower face of the fist, from where water is supplied. The nozzle is fixed in the fist by means of a threaded connection.

2 003128191

MPKE21S 35/187

which leads to loss of pressure and fluid flow and, accordingly, reduces the irrigation efficiency. In addition, this does not allow for high-pressure irrigation with a water-air mixture, which requires high pressure of water supplied to the nozzle. Yes; e one drawback of this solution is the use of a threaded connection to secure the nozzle. A threaded joint, subject to constant exposure to water and a corrosive mine environment, has a low service life and causes significant difficulties when installing and installing (for example, when replacing a nozzle).

The closest to the utility model in terms of technical dryness and the result achieved is a tool holder with a built-in nozzle, including a fist with a main hole in which the sleeve is located, a socket whose axis is located in the plane of symmetry of the fist above the axis of the main hole, and the front face the socket is located behind the front edge of the main hole, and with at least one channel connecting the lower edge of the fist and the socket, as well as a cutter located in the hole of the sleeve, and a nozzle placed in the socket and supply hydrochloric internal cavity fluidly connected to the channel in a fist (European Patent № ER0587991 IPC E21S 35/187, publ. 23.03.1994). The nozzle is fixed in the fist by means of a threaded connection located in the area of the rear edge of the fist.

This solution ensures the tightness of the high pressure water supply to the nozzle. However, the problem remains of the low resource of the threaded connection in the mine conditions and the complexity of the installation-dismantling operations of the nozzle. In addition to the above, to place the nozzle and operate it at high water pressure, it is necessary to coaxially fulfill at least three surfaces in the fist socket: one — threaded and two surfaces — under the seals located on both sides of the intersection of the socket and the channel. This causes additional difficulties in the manufacture of the tool holder, as well as when installing the nozzle in the socket.

The utility model is based on the task of creating a tool holder with a built-in nozzle, in which, by changing the nature of the connection between the nozzle and the fist, the nozzle and fist service life is increased, the mounting and dismounting of the nozzle is facilitated, which improves the efficiency of the dust holder performing dust suppression functions and spark suppression.

The problem is solved due to the fact that the tool holder with a built-in nozzle includes a fist with a main hole in which the sleeve is located, and a socket whose axis is located in the plane of symmetry of the fist above the axis of the main hole. The front edge of the socket is located behind the front edge of the main hole. The lobular fist and the nest are connected through at least one channel. In addition, the holder contains a cutter sized 1 in the bore of the sleeve and a nozzle located in the socket. The nozzle is provided with an internal cavity hydraulically connected to the channel in the fist. According to a utility model, the fist is equipped with a groove crossing the nest in the area of its posterior face and limiters. A bracket is placed in the groove, with the possibility of contact with the support face of the nozzle, eliminating the possibility of the nozzle moving along the axis of the socket. The bracket is equipped with two elastic shanks, with the possibility of changing the distance between them under the influence of a force perpendicular to the axis of the socket, as well as - stops placed on the shanks. The stops are placed with the possibility of contact with the limiters, as well as with the ability to exit this contact when changing the distance between the shanks.

Distinctive features of the prototype of the utility model are the presence on the fist of a groove intersecting the nest in the area of its rear face and limiters, as well as the location in the groove of the bracket with the possibility of contact with the supporting face of the nozzle. Moreover, the bracket is equipped with two elastic shanks and stops placed on them with the possibility of contact with limiters, as well as exit from this contact when changing the distance between the shanks.

Distinctive essential features of the tool holder with a built-in nozzle, according to the utility model, in combination with the known features make it possible, in contrast to the prototype, to provide reliable threadless fastening of the nozzle in the fist, to increase the life of the nozzle and fist by eliminating their least durable element - thread, as well as - facilitate the installation and dismantling of the nozzle. This allows you to increase the efficiency of the holder with a cutter with built-in nozzle dust suppression and spark suppression functions.

In particular cases, the holder of the cutter with a built-in nozzle, the bracket is made in the form of a cut ring with elastic shanks, bent at the ends, the groove is made in the form of an annular bore with at least one gap at the intersection with the socket. This allows you to protect the bracket from the effects of the rock mass surrounding the tool holder during its movement during operation, thereby preventing the possibility of spontaneous release of the bracket from the groove.

In other particular cases of the cutting tool holder with a built-in nozzle, the bracket is made in a U-shape with elastic shanks bent at the ends, the stops are placed at the ends of the shanks, the groove is straight and the stops are placed at one end of the groove. This allows us to provide the convenience of performing mounting-dismantling operations of the bracket.

In some cases, the execution of the tool holder with a built-in nozzle, the nozzle is made of two separate parts, and the inner cavity of the nozzle is formed by the surfaces of both parts, and the supporting face is placed on the rear of the nozzle. This makes it possible to effectively clean the internal cavity of the nozzle from contaminants formed in it during operation.

A second example of a cutter holder with an integrated nozzle in section is shown. In FIG. 4 shows a view B of FIG. Z.

The first example of a cutter holder with an integrated nozzle (see Fig. 1.2) includes a fist 1 with a main hole 2, in which a sleeve 3 is placed, with a socket 4, the axis of which is located in the plane of symmetry of the fist above the axis of the main hole 2. Front face 5 the socket 6 is located behind the front face 6 of the main hole 2. The fist 1 is installed with the lower face 7 on the actuator 8. The channel 9 connects the lower face 7 of the fist and the socket 4. The cutter 10 is located in the hole of the sleeve 3. The nozzle 11 is located in the socket 4 and is provided with an internal cavity 12, hydra nical associated with the channel 9.

The fist 1 is provided with a groove 13, made in the form of an annular bore on the rear face 14 of the fist and intersecting the socket 4. On the rear surface of the groove, stops 15 are placed. A groove 16 is placed in the groove 13, with the possibility of contact with the support face 17 of the nozzle 11. The bracket is made in the form cut rings with elastic shanks 18, bent at the ends 19. On the shanks 18 there are stops 20. On the nozzle there are two seals: front 21 and rear 22.

The first example of a tool holder with a built-in nozzle works as follows.

When the Executive body 8 is rotated, the cutter 10 installed in the fist 1 produces destruction of the rock mass. At the same time, irrigation fluid is supplied to the lower face 7 of the fist under pressure. Through the channel 9, the liquid enters the socket 4 and, further, into the internal cavity 12 of the nozzle 11. A liquid stream formed in the internal cavity 12 of the nozzle through the hole in the front face 5 of the socket 4 is emitted from the fist 1 and enters the area immediately behind the cutter. Since this zone is the main source of dust and spark formation, the ingress of a liquid stream into it provides optimal conditions for dust suppression and spark suppression.

at the same time, the nozzle And receives the force pushing it out of the socket 4, created by the pressure of the liquid. This force is transmitted through the support face 17 of the nozzle to the bracket 16, which is supported by its stops 20 in the stops 15 located on the rear surface of the groove 13. Thus, the nozzle 11 is prevented from axial displacement by the bracket 16 located in the groove 13. Losses of liquid and pressure are eliminated due to the presence of seals 21 and 22.

To dismantle the nozzle, it is necessary to apply a force perpendicular to the axis of the socket 4 to the bent ends 19 of the elastic shanks 18 and bring them together. When this stops 20 out of contact with the limiters 15 of the groove, which allows you to remove the bracket 16 from the groove 13 in the direction along the axis of the socket 4. After that, it becomes possible to remove the nozzle 11 from the socket 4. Installation of the nozzle is carried out in the reverse order.

It should be noted that the possibility of an accidental exit of the bracket 16 from the groove 13 during operation is virtually eliminated due to the following. Firstly, the bracket 16 is placed in the groove 13 on the rear edge 14 of the fist, in the place most protected from accidental influences. Secondly, to remove the bracket 16, it is necessary to exert efforts on it, acting in mutually perpendicular directions.

Thus, in the tool holder with a built-in nozzle, an increase in the service life of the nozzle and fist is achieved, the installation and dismantling of the nozzle is facilitated, which improves the efficiency of the dust holder and spark suppression functions by the tool holder.

The second example of a cutter holder with an integrated nozzle (see Fig. 3.4) includes a fist 1 with a main hole 2, in which a sleeve 3 is placed, with a socket 4, the axis of which is located in the plane of symmetry of the fist above the axis of the main hole 2. Front face 5 sockets 4 are located behind the front face 6 of the main hole 2. The fist 1 is installed by the lower face 7 on the actuator 8. Channel 9 connects the lower

face 7 of the fist and socket 4. The cutter 10 is placed in the hole of the sleeve 3. The nozzle 11 is placed in the socket 4 and is provided with an internal cavity 12 hydraulically connected to the channel 9.

The fist 1 is provided with a direct groove 13 made on the rear face 14 of the fist and intersecting the socket 4. At the lower end of the groove 13, stops 15 are placed. A groove 16 is placed in the groove 13, with the possibility of contact with the support face 17 of the nozzle 11. The bracket is made in a U-shape with elastic shanks 18, bent at the ends 19. At the ends 19 of the shanks 18 there are stops 20. Two seals are placed on the nozzle: front 21 and rear 22. The nozzle 11 is made of two separate parts: front 23 and rear 24, with the inner cavity 12 of the nozzle formed by surfaces beih parts, and the supporting face 17 is placed on the rear portion 24 of the nozzle. The middle seal 21 is located on the front of the nozzle 23, and the rear seal 22 is located on the rear of the nozzle 24.

The second example of the tool holder with a built-in nozzle works in general similarly to the first example. The differences are in the design of the nozzle holding unit in the socket and, accordingly, the mounting and dismounting operations of the nozzle.

During operation, the rear part 24 of the nozzle 11 receives the force pushing it out of the socket 4, created by the pressure of the liquid. This force is transmitted through the support face 17 of the nozzle to the bracket 16 located in the groove 13. Losses of fluid and pressure are eliminated due to the presence of seals 21 and 22.

To dismantle the nozzle, it is necessary to apply a force perpendicular to the axis of the socket 4 to the bent ends 19 of the elastic shanks 18 and bring them together. Moreover, the stops 20 come out of contact with the limiters 15 of the groove, which allows you to remove the bracket 16 from the groove 13 in the direction along the groove. After this, it becomes possible to remove the nozzle 11 from the slot 4.

It is also possible to remove the brackets 16 from the groove 13 by applying force to the crossbar of the bracket having an H-shape. At the same time, the stops 15 interact with the inclined surface of the stops 20,

creating efforts perpendicular to the axis of the socket 4 and the converging ends 19 of the elastic shanks 18 to each other. With a sufficiently large magnitude of this force, the stops 20 are so close that they come out of contact with the stops 15 and the bracket 16 is removed along the groove 13.

The nozzle is mounted in the reverse order.

It should be noted that in the second embodiment of the cutting tool holder, the mounting-dismounting operations of the staples are simplified in comparison with the first embodiment, since dismantling, in particular, only requires an upward force to be applied to the staple bar 16. Moreover, the probability of such an accidental occurrence during work leading to the release of the bracket 16 from the groove 13 is quite small.

The execution of the nozzle 11 in two parts allows, after dismantling it, to effectively clean the internal cavity of the nozzle, which is exposed to contamination during operation.

Thus, in the tool holder with a built-in nozzle, an increase in the service life of the nozzle and fist is achieved, the installation and dismantling of the nozzle is facilitated, which improves the efficiency of the dust holder and spark suppression functions by the tool holder.

First substitute

for scientific work "|| s / donshro-mri N.I. Stadnik

Claims (4)

1. The tool holder with a built-in nozzle, comprising a fist with a main hole in which the sleeve is placed, a socket, the axis of which is located in the plane of symmetry of the fist above the axis of the main hole, and the front face of the socket is located behind the front face of the main hole, and with at least , one channel connecting the lower edge of the fist and the socket, as well as a cutter placed in the hole of the sleeve, and an injector placed in the socket and provided with an internal cavity hydraulically connected to the channel in the fist, characterized in that k is equipped with a groove crossing the nest in the area of its rear face and stops, a bracket is placed in the groove with the possibility of contact with the support face of the nozzle, which excludes the possibility of the nozzle moving along the axis of the nest, the bracket is equipped with two elastic shanks with the possibility of changing the distance between them under the influence of force, perpendicular to the axis of the nest, as well as stops placed on the shanks and in contact with the limiters with the possibility of coming out of contact when changing the distance between the shanks. 2. The cutter holder with an integrated nozzle according to claim 1, characterized in that the bracket is made in the form of a cut ring with elastic shanks bent at the ends, the groove is made in the form of an annular bore with at least one gap at the intersection with the socket. 3. The tool holder with a built-in nozzle according to claim 1, characterized in that the bracket is U-shaped with elastic shanks bent at the ends, the stops are placed at the ends of the shanks, the groove is straight and the stops are placed at one end of the groove. 4. The tool holder with a built-in nozzle according to claim 1, characterized in that the nozzle is made of two separate parts, the inner cavity of the nozzle being formed by the surfaces of both parts, and the supporting face is placed on the rear of the nozzle.