Tool for breakage and extraction of ground with insert of cemented tungsten carbide and ring, machine for extraction of material including such tool and method of this tool manufacturing

FIELD: oil and gas industry.

SUBSTANCE: tool (2) for ground breakage and extraction contains body (4), support surface (12) at working end (8) of the case including cavity (14) and side walls (16), insert (20), with tip (22), wedge-shaped face surface (26), lateral surface (28) and transitional edge (30) at crossing of face surface (26) and lateral surface (28) and ring (40) located radially outside protruding side walls (16). Transitional edge (30) and the most axially protruding surface (18, 42) along the axis of each side walls (16) and ring (40) are made as step-shaped backward configuration. The most forward and axially protruding surface (42) of the ring (40) is placed at axial distance D from tip (22) of the insert (20), while the most backward and axially protruding surface (56) of the ring (40) is placed at axial distance d from tip (22) of the insert (20), at that ring (40) is the most radially remote area of the tool (2) within interval D-d, at that the most backward and axially protruding surface (60) of the insert (20) is placed at axial distance L from tip (22) of the insert (20), where 0.5L≤D≤0.9L, preferably 0.5L≤D≤0.8L. Invention also describes machine for material extraction with installed tool (2) for ground breakage and extraction and method of tool (2) manufacturing.

EFFECT: increasing service life of tool.

13 cl, 4 dwg

 

The present invention relates to a tool for blasting and excavation. In particular, the present invention relates to a tool for blasting and excavation with a working end having an insert of cemented carbide, a support surface for the insert having a protruding side walls, and a ring made of a material harder than the tool body located radially outward from the protruding side walls, in which the insert, the side walls and the ring is made in the ongoing back-stepped configuration.

In the following review of the prior art reference shown in specific designs and/or methods. However, the following references should not be considered as admitting that these structures and/or methods are previous technique. It is assumed that such designs and/or methods not defined as a prior technique.

Tools for blasting and excavation workers inserts carbide had such a structure that has a lower power consumption for a given working capacity. Although the cutting tip of the insert is intended to provide notches or muck soil these low-power tools, if the body is exposed to impact or abrasion during operation of the tool, made of softer material, the body is subjected to wear and what to damaged. One result of this wear and tear is a loose insert. Then the tool prematurely fails, because the insertion offset.

Currently there is no alternative suitable for difficult conditions of excavation (e.g., tunnel excavation, trench excavation, and so on). The caps are thin steel protection, but do not seek to remain in their steel cages in difficult conditions. In one known tool ring is located on the front of the front surface of the housing. However, the axial location of the ring on the insert makes penetration difficult due to blunting of the tip. Dull cutters create excessive dust, consume too much energy, generate more heat and create excessive vibration.

Object of the invention is to create a tool for blasting or excavation, which will create benefits cap and force grip inserts and is suitable for the most difficult conditions, with the increase of tool life. In addition, the dulling of tools should be minimized for improved functioning.

A typical tool for blasting or excavation includes a housing having a mounting end and a working end, a bearing surface at the working end including a cavity and along the axis of the protruding side walls, obrazovanie in one piece with the housing, an insert mounted within the cavity with the tip on the most protruding forward along the axis of the end, a wedge-shaped front surface, side surface and a transition edge at the intersection of the front surface and the side surface, and a ring located radially outside of the protruding side walls, a ring formed from a material harder than the body of the instrument, in which the transition region and the outermost forward along the axis of the surface of each of the side walls and rings made in continuing back along the axis of the stepped configuration.

A typical machine for excavation material contains a rotating element and one or more tools for blasting or excavation, installed on the rotating element, in which a tool for blasting or excavation includes: a housing having a mounting end and a working end, a bearing surface at the working end including a cavity and along the axis of the protruding side walls formed in one piece with the housing, the insert installed inside the cavity with the tip on the most protruding forward along the axis of the end, a wedge-shaped front surface, side surface and a transition edge at the intersection of the front surface and the side surface, and a ring located radially outside of the protruding side walls, the ring, the image of the cell from a material more rigid, than the tool body in which the transition region and the outermost forward along the axis of the surface of each of the side walls and rings made in continuing back along the axis of the stepped configuration.

A typical method of manufacturing a tool for blasting and excavation includes the formation of the first support surface at the working end of the tool body, the abutment surface that includes the cavity and along the axis joining the side walls formed in one piece with the housing; education second support surface directed radially outward from the cavity of the first bearing surface; attaching the insert to the first support surface, the insert comprising a tip on the most protruding forward along the axis of the end, a wedge-shaped front surface, side surface and a transition edge at the intersection of the front surface and the side surface; and attaching the ring to the second support surface in which the attached ring is located radially outside of the protruding side walls, and the ring is formed from a material harder than the body of the instrument, and the transition region and the outermost forward along the axis of the surface of each of the side walls and rings made in continuing back along the axis of the stepped configuration.

It is obvious that the foregoing General description of the tion, and the following detailed description are exemplary and explanatory and are intended to provide additional disclosure of the invention claimed.

The following detailed description given with reference to the accompanying drawings, in which similar reference position identify identical elements and in which:

figure 1 shows a view in cross section of an exemplary variant of the implementation of the tool for blasting and excavation;

figure 2 shows a view in cross section of a tool for blasting and excavation figure 1, showing selected components in a disassembled state;

figure 3 shows the enlarged view in cross section of the working end of the tool for blasting and excavation figure 1;

figure 4 shows a side view of an exemplary variant of the implementation of the working end of the tool for blasting and excavation.

In the above embodiments, the implementation of tools for blasting and excavation have a box on the desktop end, and mounting means, such as clamping the coupling or clamping the bracket on the mounting end. The insert is made of a rigid material, an example of which is cemented carbide.

Figure 1 shows a view in cross section of an exemplary variant of the implementation of the tool for blasting or excavation. Approximate tool 2 for blasting or excavation g is the flying boot includes a housing 4, having a mounting end 6 and the working end 8, is made in the length along the axis 10. Bearing surface 12 is located at the working end 8. Bearing surface 12 includes a cavity 14 and the axis of the protruding side walls 16. The side walls 16 is made in one piece with the housing 4 suitable means, such as, for example, by mechanical processing or a combination of pre-stamping, for example, casting or forging, and machining. The side walls 16 have a front surface 18, which is essentially perpendicular to the axis 10.

The insert 20 is placed within the cavity 12. In the above embodiment, the insert 20 has a lug 22 on the most protruding forward along the axis of the end 24, a wedge-shaped front surface 26, the side surface 28 and the transition edge 30 at the intersection of the front surface 26 and the side surface 28.

The ring 40 is located radially outside of the protruding side walls 16. The ring 40 is farthest radial part in this longitudinal location along the axis 10, in which no part of the building 4, which is radially directed outward from the outer diameter of the ring 40. In the above embodiment, the ring 40 has a front surface 42, which is essentially perpendicular to the axis 10. In the above embodiment, the ring 40 is formed and the material is more solid, than the material forming the body of the instrument, that is harder than steel shell 4, and more specifically, harder than the material forming the protruding side walls 16.

The various components of the tool 2 for blasting and excavation, such as a support surface 12, the cavity 14 and the axis of the protruding side walls 16, more clearly shown in figure 2, which presents a view in transverse section of the tool 2 for blasting or excavation figure 1 in an unassembled condition. Also figure 2 shows the abutment surface 44 of the ring 40. As can be seen in figure 2, the supporting surface 12 are continuous cavity, which provides enhanced support for the insert 20 against lateral efforts perpendicular to the axis 10. Additionally, a continuous cavity provides the best flow of solid material during insertion of the insert 20.

Exemplary embodiments of the tool for blasting or excavation may be included in the machine to cut the material. Typical machines for excavation of material include machines for underground mining, surface mining, trenching, road design and/or unloading of the pile. For example, a machine to cut material contains a rotating element and one or more tools for blasting or excavation, installed on the rotating element. Location vstavki, the side walls 16 and ring 40 such that the material excavated using a tool 2 for blasting or excavation, is preferably moved to the sides of the tool 2 and from them. Under such conditions, excavated material may cause wear of the tool. To increase the longevity of this tool 2, the transition region 30 and the outermost forward along the axis of the surface 18, 42 of each of the side walls 16 and the ring 40 is performed in continuing back along the axis of the stepped configuration. When using the excavated material will be collected on the surfaces of stepped configuration, such as the outermost forward surface 18 of the side wall 16 and the outermost forward surface 42 of the ring. As more material is removed, this collected material is subject to wear and lower surfaces of the working end 8 is subject to wear.

Figure 3 shows the enlarged view in cross section of the working end of the tool for blasting or excavation figure 1 and presents this stepped configuration. However, the profile of stepped configuration, however, is inside the ballistic outer boundary of the tool 2. For example, the transition region 30, the radially most remote area 50 most protruding forward along the axis of the surface 18 of the side wall 1 and the radially most remote area 52 the most protruding forward along the axis of the surface 42 of the ring 40 is made on ballistic outer border 54 of the tool 2. In exemplary embodiments, the implementation of the ballistic outer boundary forms an angle α of approximately 60 degrees or less, alternatively from 45 degrees to 60 degrees.

Figure 3 also presents typical embodiments of the relative axial positions of the insert 20 and the ring 40 and the relative radial positions and thicknesses of the insert 20, the side walls 16 and ring 40.

For example, in the relative axial positions of the insert 20 and the ring 40, note that the outermost ago-axis surface 30 of the insert 20 is located at an axial distance L from the tip 22 of the insert 20, and the protruding forward along the axis of the surface 42 of the ring 40 is located at an axial distance D from the tip 22 of the insert 20. The above embodiments of support relative axial position of these parts in such a way that D is equal to or is within 0,5L and 0,9L (i.e. 0,5L≤D≤0,9L), alternatively equal to or is within 0,5L and 0,8L (i.e., 0,5L≤D≤0,8L), alternatively equal to or between 0,6L and 0,8L (i.e. 0,6L≤D≤0,8L). In addition, the outermost ago-axis surface 56 of the ring 40 is located at an axial distance d from the tip 22 of the insert 20, and the relative axial position of these parts is such that d is greater than D and d is less than L, alternatively, d≤0,9L, to the operation of alternative d≤0,75L. For example, in one exemplary embodiment, 0,5L≤D≤0,8L and d≤0,9L. The relative axial position of the insert 20 and the ring 40 improve the placement of the insert 20 and provide better support against the efforts applied to the insert during use.

As previously noted, the ring 40 is farthest radial part in this longitudinal location along the axis 10, in which no part of the building 4, which is directed radially outward from the outer diameter of the ring 40. Thus, in the interval D-d, the ring 40 is radially most remote section of the tool 2. As shown in figure 3, the ring 40 is entirely within the axial space of the insert so that the outermost ago-axis surface 30 of the insert 20 continues along the axis back outside the ring 40, and the other part of the insert 20 continues on an axis, forward outside most protruding forward along the axis of the surface 42 of the ring 40.

In another example, and in relation to the relative radial positions and thicknesses of the insert 20, the side walls 16 and ring 40 note that the radial thickness of the side walls 16 is a maximum of lsand the radial thickness of the ring 40 is a maximum of lr. Exemplary embodiments of support relative radial position and thickness of these parts so that l rgreater than or equal to ls(i.e., lr≥ls). The thickness of the lsside wall 16 is sufficient, without ring 40, to allow continuous use of the tool 2 for blasting or excavation. Thus, if the ring is lost or otherwise removed, such as broken or worn, the insert 20 has sufficient support from the side walls 16 to continue the excavation. As an example, the radial thickness of the side walls 16, an exemplary thickness is 1 mm ≤ls≤4 mm

Figure 4 shows a side view of an exemplary variant of the implementation of the working end 8 of the tool 2 for blasting or excavation.

Provides a tool for blasting or excavation can be made in any suitable way. In one exemplary method, the manufacturing method includes the formation of the first support surface at the working end of the tool body supporting surface, comprising a cavity and along the axis of the protruding side walls, made in one piece with the housing, and education second support surface, a radially directed outward from the cavity of the first bearing surface. Education first and the second support surface can be performed by machining or by a combination of pre-stamping, for example, casting or forging and mechanical processing the weave.

The manufacturing method also includes attaching the insert to the first support surface and the attachment ring to the second support surface. Attached ring fitted radially on the outside of the protruding side walls and the transition region, and the most protruding forward along the axis of the surface of each of the side walls and rings perform directed back along the axis of the stepped configuration. In exemplary embodiments, the implementation of at least one of the attachments of the insertion and the insertion of rings includes brazing with an allowance at the intersection of the insert and/or rings and the corresponding support surface.

Components and details the main tool for blasting or excavation ensure performance is improved compared to conventional designs, including reduced resistance, easier penetration, less dust generation, reduced energy consumption, reduced heat and minimized vibration.

Although there have been described preferred embodiments of the invention, specialists in the art should understand that you can perform additions, improvements, modifications, and substitutions not defined above without going beyond the nature and scope of the invention as defined in the attached formula izopet the deposits.

Disclosure of the provisional application for U.S. patent No. 60/996788 and the provisional application for U.S. patent No. 61/064075 whose priority this application claims included herein by reference.

1. Tool (2) for blasting or excavation, comprising a housing (4)having a mounting end (6) and the working end (8), a support surface (12) at the working end (8)comprising a cavity (14) and along the axis of the protruding side walls (16), made in one piece with the housing (4), the insert (20)located inside the cavity (14)having a tip (22) on the most protruding forward along the axis of the end (24), wedge-shaped front surface (26), the side surface (28) and the transition region (30) at the intersection of the front surface (26) and side surface (28), and ring (40)located radially outside of the protruding side walls (16) and formed from a material harder than the body (4) of the tool (2), and the transition region (30) and the most protruding forward along the axis of the surface (18, 42) of each of the side walls (16) and the ring (40) is made in continuing back along the axis of the stepped configuration that is different the fact that most protruding forward along the axis of the surface (42) of the ring (40) is located at an axial distance D from the tip (22) of the insert (20), and the outermost ago-axis surface (56) of the ring (40) is located at an axial distance d from the tip (22) of the TSA is Cai (20), moreover, the ring (40) is radially most remote section of the tool (2)in the interval D-d, the most prominent ago-axis surface (60) of the insert (20) is located at an axial distance L from the tip (22) of the insert (20)where 0,5L<D<0,9L, preferably 0,5L≤D≤0,8L.

2. The tool according to claim 1, wherein d is greater than D and D is less than L.

3. The tool according to claim 2, characterized in that the 0,5L≤D≤0,8L and d≤0,9L.

4. Instrument according to any one of claims 1 to 3, characterized in that the radial thickness of the side walls (16), the maximum is equal to lsradial thickness of the ring (40) is maximally equal to lrand lrgreater than or equal to ls.

5. The tool according to claim 1, characterized in that the transition region (30) and radially most remote area (50, 52) the most protruding forward along the axis of the surface (18, 42) of each of the side walls (16) and the ring (40) is made of a ballistic outer border (54) tool (2).

6. The tool according to claim 5, characterized in that the ballistic outer boundary (54) forms an angle (α)of approximately 60 degrees or less.

7. The tool according to claim 1, characterized in that the insert (20) is placed in the cavity (12) soldering, hard soldering with an allowance.

8. Machine for excavation of material containing a rotating element, wherein the one or more tools (2) according to any one of claims 1 to 7, is set to torque the I element.

9. Machine for removing material of claim 8, wherein the machine for excavation material is a machine for underground mining, machine for surface mining, machine for road design, machine for digging trenches or unloading of the stack.

10. The method of manufacture of the tool (2) for blasting or excavation, which forms the first supporting surface (12) at the working end (8) of the housing (4) of the tool (2)and bearing surface (12) includes a cavity (14) and along the axis of the protruding side walls (16), made in one piece with the housing (4), form a second bearing surface (44)which is directed radially outward from the cavity (14) of the first support surface (12), attach the insert (20) to the first reference surface (12)and insert (20) includes a cap (22) to the most protruding forward along the axis of the end (24), wedge-shaped front surface (26), the side surface (28) and the transition region (30) at the intersection of the front surface (26) and side surface (28), and attach the ring (40) to the second support surface (44), with attached ring (40) is located radially outside of the protruding side walls (16) and is formed from a material harder than the body (4) tool (2), and the transition region (30) and the most protruding forward along the axis of the surface (18, 42) of each of the side walls (16) and Aliza (40) is performed in continuing back along the axis of the stepped configuration, characterized in that the outermost forward along the axis of the surface (42) of the ring (40) is located at an axial distance D from the tip (22) of the insert (20), and the outermost ago-axis surface (56) of the ring (40) is located at an axial distance d from the tip (22) of the insert (20), the ring (40) is radially most remote section of the tool (2) in the interval D-d, the most prominent ago-axis surface (60) of the insert (20) is located on the axial the distance L from the tip (22) of the insert (20)where 0,5L≤D≤0,9L, preferably 0,5L≤D≤0,8L.

11. The method according to claim 10, characterized in that at least one of the attachments of the insert (20) and the insertion of the ring (40) includes brazing with an allowance.

12. The method according to claim 10 or 11, characterized in that the transition region (30) and radially most remote area (50, 52) the most protruding forward along the axis of the surface (18, 42) of each of the side walls (16) and the ring (40) is performed on ballistic outer border of the tool (2).

13. The method according to claim 10, wherein d is greater than D and D is less than L.



 

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20 cl, 6 dwg

FIELD: mining.

SUBSTANCE: toolhead for drawknife cutter features mounting pocket open from above for receiving cutter liner limited at the ends with two lateral, one front and one back supporting walls forming drawknife cutter support located mainly in the middle part of back supporting wall and descending to the outer areas. End side of the back support wall directed to the mounting pocket features guiding surfaces in the outer areas, the said guiding surfaces descending inside at an angle to the mounting pocket and serving as an auxiliary mounting device for drawknife cutter.

EFFECT: excellent support of inserted cutter and fast and simple cutter mounting.

8 cl, 4 dwg

FIELD: mining engineering.

SUBSTANCE: invention relates to mining industry, particularly the cutting tools of mining machines serving to disintegrate coal and other mine rocks. The cutting tool for disintegration of coal and other mine rocks consists of a tool holder with a lengthwise passage for water supply and a cutting tool cartridge as a core with through microcanals connecting the surface of the cutting tool cartridge working part with the lengthwise passage of the tool holder. Outlet holes of the microcanals on the surface of the cutting tool cartridge are made as contour rows positioned throughout the entire length of the working surface forming a cone. This structure increases the distance between the rows of the outlet holes as it gets further away from the top of the core, and the density of distribution of the microcanal external holes on the working surface of the cutting tool cartridge rises toward the top of the core.

EFFECT: extended life of a cutting tool and decreased wear of the cutting tool cartridge.

1 dwg

Tool holder. // 2347907

FIELD: mining..

SUBSTANCE: invention refers to mining and building, particularly to machines with pulvimixer. A tool holder for a machine with the pulvimixer or such like has base (10) which bears holding added piece (30), also added piece (30) has receiving seat (31) of the cutting tool; and lug (15) is attached to base (10) before holding added piece (30) in the direction of tool holder feeding. Base (10) has connecting section (20) made in form of a chip breaker; the connecting section is formed on base (10) and passes at least partially through lug (15) starting from holding added piece (30). End section (34) of holding added piece (30) has intake seat (31) of the cutting tool made in form of an aperture. Also end section (34) has circular contact surface (33) passing around medium lengthwise axis of intake seat (31) of the cutting tool. Contact surface (33) which is located radially outside passes up to dimension boundaries of a cylinder region of end section (34). Connecting section (20) returning in the direction of the axis relative to contact surface (33) is connected with holding added piece (30).

EFFECT: improved operation of cutting of disk pulvimixer.

9 cl, 3 dwg

FIELD: mining.

SUBSTANCE: disclosed group of inventions refers to mining industry, particularly to rock destruction tool for mining machines used at deposit development. The cutter consists of an elongated tail piece, of a cutting element secured at one end of the tail piece, projected out of it and made out of material of hardness exceeding hardness of the tail piece, and of a composed bushing formed with multitudes of belts secured around the tail piece near the cutting element and directly adjoining each other. Also belts of the bushing are fabricated out of material more hard, than material of the tail piece, the material of belts is less prone to produce an igniting spark, than material of the tail piece during cutting.

EFFECT: increased safety at mining operations due to reduced probability of generating igniting spark when cutter touches surface of rock in mining works hazardous for gas and dust, also increased wear resistance of cutter tail piece.

27 cl, 4 dwg

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