Mineral and artificial material cutting device

FIELD: mining industry, particularly miscellaneous items relating to machines for slitting or completely freeing the mineral from the seam.

SUBSTANCE: device comprises working head, shank with groove for clamping sleeve receiving and with seating surface for protective member installation in its working position. The device also has split clamping sleeve and protective member installed on clamping sleeve so that protective member may perform axial movement. Lower protective member base is spaced a distance from axis of device symmetry relative shank end. The distance is not less than 0.45 of clamping sleeve length measured along the same axis. Protective member thickness is 0.025-0.25 of clamping collar length. Protective member may be formed as flat washer, as plate-like washer, as washer with annular extension located on upper end thereof and cooperating with end working head surface, as washer with additional axial annular extension formed on lower end thereof and cooperating with cutter holder or as at least two washers.

EFFECT: reduced labor inputs for device assemblage in the field.

6 cl, 5 dwg

 

The invention relates to the mining industry, in particular to a device for the destruction of mineral and synthetic materials, and can be used in the Executive production and roadheaders in the extraction of minerals and the formation of openings in the soil, as well as in the working bodies of construction and road machinery in the construction and repair of roads.

A device for the destruction of mineral and synthetic materials, which contains a working head, a shaft with a groove for accommodating the clamping sleeve and the annular mounting surface for installation of a protective element in its working position, is made of elastic material split clamping sleeve has a cylindrical shape and mounted on the clamping sleeve with the possibility of axial movement of the protective element (see, for example, application Germany (DE) No. 19720635, CL E 21 35/18, publ. 19.11.98).

In the known technical solution, the sequence of the work performed requires a dynamic impact on the clamping sleeve when mounting the device. In this case, the clamping sleeve is deformed to size, ensuring its passage into the channel of the tool holder, by putting on protective element. In this state, the device is inserted into the socket of the tool holder and then slip the protective element on a landing surface shall rnost holder, freeing the clamping sleeve. The clamping sleeve under the action of forces of elasticity extends in the channel of the tool holder and secures the device in the past. The disadvantages of the known technical solutions include the need is strong deformation of the clamping sleeve for receipt of such diameter that would be less than the diameter of the channel in the holder. After such compression in the clamping sleeve appear permanent deformation, which after removing the protective element can cause the clamping sleeve will not be enough to securely hold the tool holder in the tool holder. Pre-compression during Assembly of the device and the subsequent expansion of the clamping sleeve can lead to the violation of its geometric shape that can cause rotation of the tool holder during operation.

The closest in technical essence and the achieved technical result is a device for the destruction of mineral and synthetic materials, comprising a working cylinder, a shaft with a groove for accommodating the clamping sleeve and with a mounting surface for mounting a protective element in its working position, a split clamping sleeve and mounted on the clamping sleeve with the possibility of axial movement of the protective element (see, for example, patent of Russian Federation №2198292, CL E 1 35/197, publ. 10.02.2002).

Known technical solution partially eliminates the disadvantages described above of the device selected as analog. In the known device during Assembly of the protective element attaches the clamping sleeve conical shape that allows you to facilitate its introduction into the toolholder bore. However, giving a clamping sleeve with a protective element conical shape causes the diameter of the end of the clamping sleeve, which is converted to the working cylinder, and is determined by the diameter of the larger base of the cone becomes larger than the diameter Seating surface on the shank. This circumstance leads to the fact that when assembling the split sleeve partially out of the groove on the shank and at least part of it is located on the Seating surface of the shank, that is, the conical shape of the clamping sleeve is fixed during Assembly. On the other hand, if the mounting portion of the clamping sleeve was located on the Seating surface of the shank, the shank will not be able to pass into the channel of the tool holder due to the fact that the diameter appeared on the landing surface of the shank end of the clamping sleeve exceeds the diameter of the channel of the tool holder. Thus, the disadvantages of the known devices include a greater likelihood of jamming of saknavtobi in the channel of the tool holder during Assembly of the device and under the action of applied loads deformation of the clamping sleeve, calling the impossibility of its re-use.

The invention is directed to the task of creating such a device for the destruction of mineral and synthetic materials, which could provide reliable fastening device in the channel of the tool holder while reducing the complexity of Assembly of the device under operating conditions. The technical result that can be obtained when the invention is in the formation of certain geometric shapes clamping sleeve, which provides free entry into the channel of the tool holder during Assembly of the device.

The problem is solved due to the fact that the device for destruction of mineral and synthetic materials, which contains a working head, a shaft with a groove for accommodating the clamping sleeve and with a mounting surface for mounting a protective element in its working position, a split clamping sleeve and mounted on the clamping sleeve with the possibility of axial movement of the protective element, the bottom protective element is displaced along the longitudinal axis of symmetry of the device relative to the end face of the shank at a distance of not less than 0.45 of the length of the clamping sleeve on the same axis, the thickness of the protective element is not less than 0.025 and not greater than 0.25 of the length of clamping the sleeves.

In addition, the village is Alanna the problem is solved by the protective element is designed in the form of a washer flat shape.

In addition, the problem is solved due to the fact that the protective element is designed in the form of Belleville washers form.

In addition, the problem is solved due to the fact that the protective element is designed in the form of washers located on the upper base of the axial annular projection for engagement with the end surface of the head.

In addition, the problem is solved due to the fact that the protective element is designed in the form of washers located on the bottom under additional axial annular projection for engagement with the tool holder.

In addition, the problem is solved due to the fact that the protective element is designed as at least two washers.

The invention is illustrated by drawings, where figure 1 shows a device for the destruction of mineral and synthetic materials; figure 2 - cutting block Assembly; figure 3 shows a device for the destruction of mineral and synthetic materials in the Assembly; figure 4 is one of the variants of the constructive execution of the protection element; and figure 5 is the same (one of the versions of the design execution).

A device for the destruction of the mineral and artificial materials contains the working cylinder 1, which may have any geometric shape, preference is sustained fashion, the shape of the body of rotation. At the end of the working head 1 can be fixed insert 2 made of hard alloy. The shank 3 preferably has the shape of a body of rotation and may be made integral with the working cylinder 1 and connected with the latter by means of detachable or permanent connection. The shank 3 is made with a groove 4 for accommodating the clamping sleeve 5. The shank 3 is the landing surface 6, which preferably has a ring shape and is designed to install a protective element 7 in its operating position. The clamping sleeve 5 preferably has a cylindrical shape and may be made of a split resilient material, for example steel. On the clamping sleeve 5 is installed with the possibility of axial movement of the protective element 7 with a through axial hole 8. The protective element 7 is designed to reduce wear facing each other of the surfaces, respectively, of the working head 1 and the tool holder 9, as well as to prevent the ingress of products of destruction (AC) in the annular channel formed by the inner surface of the clamping sleeve 5 and the side surfaces of the shank 3. The bottom base 10 of the protective element 7 is displaced along the longitudinal axis 11 of symmetry of the device relative to the end face of the shank 3, the distance (A) not less than 0.45 length (B) clamping sleeve 5 on the same axis 11, that is, in the filled condition: 0,45 B≤ A. the thickness (In) protective element 7 is not less than 0.025 and not greater than 0.25 length (B) clamping sleeve 5, that is, satisfies the following condition: 0,025 B≤≤0,25 B. the above values of the geometrical relations between the parts of the device are interconnected to obtain the technical result and the obtained empirically.

The protective element 7 can have any geometric shape, mainly the shape of the body of rotation, and in addition to the above features provides additional deformation of the clamping sleeve 5 when installing the unit in the holder 9. The most appropriate is a variant of the construction execution of the protection element 7, whereby it is made in the form of a washer flat shape, that is, the end faces of the washers are plane (figure 1).

One of the options for structural embodiment of the device the protective element 7 may be made in the form of Belleville washers form (figure 4).

Alternatively structural embodiment of the device the protective element 7 may be made in the form of washers located on its upper base 12 axial annular projection 13 for engagement with the end surface 14 of the working head 1 (Fig 3 and 5).

One of the options for structural embodiment of the device provides the imp is out of the protective element 7 in the form of washers located on the bottom of the base 10 additional axial annular projection 15 for engagement with the tool holder 9 (Fig 3 and 5).

One of the options for structural embodiment of the device the protective element 7 may be made in the form of at least two washers (2).

A device for the destruction of the mineral and artificial materials is as follows.

First carry out installation of the device in the holder 9, which is fixed on the working body(the drawings are not depicted). For this purpose, the clamping sleeve 5 mounted on the shank 3, placing it into the annular groove 4. Then the clamping sleeve 5 is compressed to a diameter smaller than the diameter of the through hole 8 of the protection element 7, and put on her protective element 7. When donning protective element 7 on the clamping sleeve 5 can be used a special device (the drawings are not depicted). The protective element 7 have at a certain distance (A) relative to the end face of the shank 3. After the protective element 7 will occupy a specified position, the clamping sleeve 5 is released and it is under the action of forces of elasticity is expanding. The protective element 7 prevents further expansion of the clamping sleeve 5. While the protective element 7 holds the clamping sleeve 5 in a compressed state, while the mounting device specified (close to the cylindrical form of the clamping sleeve 5. The device is then in the position inserted into the toolholder bore 9 and p is ilagay axial force to the working cylinder 1. When the clamping sleeve 5 is moved in the bore of the tool holder 9 to the interaction between the protective element 7 with an end face of the tool holder 9. Under the action of axial forces applied to the working cylinder 1, the protective element 7, resting on the end face of the tool holder 9 is moved in the axial direction of the clamping sleeve 5 in the direction of the working cylinder 1. When the shaft 3 together with located in the groove 4 of the clamping sleeve 5 is immersed into the toolholder bore 9. The specified immersion will continue to until the protective element 7 is fully moved to the seat surface 6 of the shank 3. When the protective element 7 will take its operating position on the Seating surface 6 of the shaft 3, it will release the clamping sleeve 5, which under the action of forces of elasticity will be expanded and pressed against the walls of the hole in the tool holder 9 (figure 2). Thus, the clamping sleeve 5 will be fixed relative to the tool holder 9. It should be noted that in the initial position above the location of the protective element 7 on the clamping sleeve 5 relative to the end face of the shank 3, and a definite correlation between the thickness of the protective element 7 and the length of the clamping sleeve 5 does not allow the clamping sleeve 5 under the action of the applied axial force to move the landing surface 6 of the shank 3. So what Braz, with a slight increase in the axial force needed to dive clamping sleeve 5 into the toolholder bore 9, virtually eliminates jamming of the clamping sleeve 5 on the Seating surface 6 of the shank 3 and the deformation of her butt.

When the movement of the working body, which is fixed by means of detachable or permanent connection of the tool holder 9, in cooperation with destructible material enters the working cylinder 1 of the device with the insert 2 of the carbide material. As a result of influence of external forces arising in the process of interaction of the working head 1 and the insert 2 with destructible material, the shank 3 is rotated around the longitudinal axis 11 of symmetry of the device in the hole of the tool holder 9, thereby providing uniform wear of interacting with destructible material components of the unit. The protective element 7 prevents the interaction with destructible material tool holder 9, contributes to a better rotation of the device in the holder and reduces wear of the working head 1 and the tool holder 9. After wear of the insert 2 or the working head 1 or breakage are replacing a failed device, the installation of which operate in the manner described above.

It should be noted that in the interaction of the working head 1 with destructible material occurs by the third time, appearance is caused by the friction of the working head 1 of destructible material. Specified torque makes the working cylinder 1 to rotate around the longitudinal axis 11 of symmetry relative to the fixed tool holder 9. The presence of axial annular ledge 13 and/or additional axial annular projection 15 on the protective element 7 can reduce the resistance to rotation of the working head 1. The protective element 7 in the form of Belleville washers can partially suppress the dynamic loads acting on the device during its operation, and thereby increase the lifetime.

1. A device for the destruction of mineral and synthetic materials, comprising a working cylinder, a shaft with a groove for accommodating the clamping sleeve and with a mounting surface for mounting a protective element in its working position, a split clamping sleeve and mounted on the clamping sleeve with the possibility of axial movement of the protective element, characterized in that the lower base of the protective element is displaced along the longitudinal axis of symmetry of the device relative to the end face of the shank at a distance of not less than 0.45 of the length of the clamping sleeve on the same axis, the thickness of the protective element is not less than 0.025 and not greater than 0.25 from the length of the clamping sleeve.

2. The device according to claim 1, characterized t is m, the protective element is designed in the form of a washer flat shape.

3. The device according to claim 1, characterized in that the protective element is designed in the form of Belleville washers form.

4. The device according to claim 1, characterized in that the protective element is designed in the form of washers located on the upper base of the axial annular projection for engagement with the end surface of the head.

5. The device according to claim 1, characterized in that the protective element is designed in the form of washers located on the bottom under additional axial annular projection for engagement with the tool holder.

6. The device according to claim 1, characterized in that the protective element is designed as at least two washers.



 

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