CN216841662U - Long-amplitude cycloidal tooth-shaped single-end cutter type cutting pick and roller - Google Patents
Long-amplitude cycloidal tooth-shaped single-end cutter type cutting pick and roller Download PDFInfo
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- CN216841662U CN216841662U CN202220022083.4U CN202220022083U CN216841662U CN 216841662 U CN216841662 U CN 216841662U CN 202220022083 U CN202220022083 U CN 202220022083U CN 216841662 U CN216841662 U CN 216841662U
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Abstract
The utility model relates to a single-end cutter type pick and cylinder of long-range cycloid tooth form, the single-end cutter type pick includes cutter body and a cutter head body, the cutter head body is brazed at the top of the cutter body, the cutting part curve of the cutter head body is a section of long-range cycloid, the cutter head body is generally made of tungsten carbide; the drum comprises a drum body, a plurality of tooth holders and cutter-type picks, an end disc is fixed at one end of the drum body, spirally-extending blades are fixed on the outer cylindrical surface of the drum body, the cutter-type picks are dispersedly mounted on the tooth holders of the end disc and the blades, and part or all of the cutter-type picks are long-amplitude cycloid tooth-shaped single-head cutter-type picks. The utility model discloses a conventional circular cone or pyramid tool bit has been increased nearly ten times or ten times to the area of contact of cutting type pick and ore body, therefore the pressure that cutting type pick tool bit receives is showing and is reducing for the life of cutting type pick tool bit and even corresponding cylinder obviously prolongs.
Description
Technical Field
The utility model relates to a mining (coal) machine is cutting pick and cylinder of having installed this kind of cutting pick for the cylinder, the single-end sword type cutting pick of cutting pick especially long-range cycloid profile of tooth.
Background
The cutter-type cutting pick is widely applied to a roller of a mining (coal) machine and is a key part and a vulnerable part on a cutting executing mechanism of the mining (coal) machine. The cutter-type cutting teeth directly act on the ore rock body to crush and cut the ore rock, and the structural performance of the cutter-type cutting teeth directly influences the production capacity and efficiency of the mining (coal) machine.
The cutting head 1 of a conventional cutting pick is a cone or pyramid in which cemented carbide such as tungsten carbide is inlaid, as shown in fig. 1. The inlaid alloy cone needs to have sufficient strength and good wear resistance and maintain good adhesion to the pick body. The conventional cutter-type cutting pick with the conical or pyramidal cutter head can be used on soft rock machinery such as a coal cutter and the like, but the loss amount of the conventional cutter-type cutting pick is extremely large when the conventional cutter-type cutting pick is applied to cutting hard rock. The main reasons for its rapid wear are: firstly, compared with coal, most of hard rocks are incompletely developed in joints, namely the hard rocks are equivalently isotropic materials, and a cutting head of the cutting pick is always in contact with a rock body in the cutting process; secondly, the hard alloy head of the cone or the pyramid is too small, and the local stress is extremely large.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a long-range cycloid profile of tooth single-end sword type pick and cylinder, its life-span can improve by a wide margin, can be used for cutting stereoplasm ore deposit rock.
The utility model discloses a main technical scheme has:
the single-head cutter-type pick with the long-amplitude cycloid tooth form comprises a cutter body and a cutter head body, wherein the cutter head body is brazed at the top of the cutter body, and the edge part curve of the cutter head body is a section of long-amplitude cycloid.
The cutter head body is made of hard alloy.
The tool bit body is made of tungsten carbide.
The prolate cycloid is a base circle with the diameter of R, and the base circle rolls purely along the X-axis direction at the rotating speed n and is superimposed at the speed voThe locus marked by any point on the base circle when the base circle is translated along the X-axis direction is set as the initial position of the center of the base circle on the origin of coordinates, the base circle rolls anticlockwise, and the curve equation of a rectangular cycloid corresponding to the intersection point of the base circle and the positive half shaft of the Y-axis, namely the reference point, under a plane rectangular coordinate system XY is as follows:
wherein x and y are coordinates of points on the prolate cycloid;
r is the diameter of the roller where the cutter-type cutting pick is located;
n, taking the rotating speed of a roller where the cutter-type cutting pick is located;
votaking the traction speed of the mining machine where the cutter-type cutting pick is located;
t is time.
And 2 pi nt is the angle theta rotated by the reference point at the moment t.
A roller comprises a roller body, a plurality of tooth holders and cutter-type picks, wherein an end disc is fixed at one end of the roller body, spirally-extending blades are fixed on the outer cylindrical surface of the roller body, the tooth holders are dispersedly mounted on the end disc and the blades, one cutter-type pick is mounted on each tooth holder, and part or all of the cutter-type picks are long-amplitude cycloidal tooth-shaped single-head cutter-type picks.
The extension direction of the blade part curve of the cutter head body is arranged along the circumferential direction of the roller body, the higher end of the blade part curve is close to the front of the rotation direction of the roller, and the lower end of the blade part curve is close to the rear of the rotation direction of the roller.
The utility model has the advantages that:
because arbitrary a bit advances along with mining (coal) machine level again when rotatory on the cylinder around the cylinder axis on the cutter type pick, its trajectory of motion is the long-range cycloid promptly, consequently the utility model discloses a cutter head body's of cutter type pick cutting edge curve adopts the long-range cycloid can make whole cutting edge curve can both keep contact friction throughout with the ore (coal) rock mass of cut when rotatory cutting ore (coal) rock, consequently the utility model discloses a cutter head body of cutter type pick and the area of contact of ore (coal) rock mass have increased nearly ten times or more than ten times than conventional circular cone or pyramid cutter head body, consequently are showing and have reduced the utility model discloses a cutter type pick goes up cutter head body pressure that receives, has reduced the violent wearing and tearing of pick, has obviously prolonged the utility model discloses a life of cutter type pick's cutter head body.
Drawings
FIG. 1 is a schematic view of a conventional cutting pick;
FIG. 2 is a schematic view of an embodiment of the cutting pick of the present invention;
FIG. 3 is a schematic illustration of the long-amplitude curve;
FIG. 4 is a schematic view of an embodiment of an assembly of a cutting pick and block according to the present invention;
FIG. 5 is a schematic view of an embodiment of a drum incorporating a cutting pick of the present invention;
fig. 6 is an axial view of fig. 5.
Reference numerals: 1. a cutting head of a conventional cutting pick; 2. the utility model discloses a cutter head body; 2-1, blade curve; 3. a roller body; 4. a cutter-shaped pick; 5. an end plate; 6. a blade; 7. a tooth holder.
Detailed Description
The utility model discloses a single-end sword type pick of long-range cycloid profile of tooth (can be referred to as single-end sword type pick for short), as shown in fig. 2, 3, including cutter body and a cutter head body 2, the cutter head body is brazed the top of cutter body, the cutting part curve 2-1 of cutter head body is a segment long-range cycloid.
Because the prong of cutting type pick is again along with mining (coal) machine level when rotatory on the cylinder around the cylinder axis and gos forward, its trajectory of motion is the longwidth cycloid promptly, consequently the utility model discloses a cutting part curve of cutter head body adopts the longwidth cycloid can guarantee that the whole curve arc tool bit of cutting type pick keeps in contact throughout with the ore (coal) rock mass of cut when rotatory cutting ore (coal) rock. The utility model discloses a contact area of cutting type pick and ore deposit (coal) rock mass has increased nearly ten times or ten times than conventional circular cone or pyramid tool bit, has consequently reduced the pressure that the long-range cycloid curve arc tool bit of cutting type pick receives, and then can obviously increase the life of long-range cycloid cutting type pick tool bit.
The tool bit body can be made of hard alloy.
Further, the tool bit body is preferably made of tungsten carbide.
As shown in FIG. 3, in a rectangular coordinate system XY, the prolate cycloids can be regarded as the base circles with the diameter R rolling purely along the X-axis direction at the rotating speed n and simultaneously being superposed at the speed voThe track is a spiral curve and is drawn by any point on the X-axis direction when the X-axis direction is translated. For simplifying the expression, the initial position of the center of the base circle is set on the origin of coordinates, the base circle rolls counterclockwise, and the curve equation of the trajectory drawn by the intersection point (which may be called as a reference point) of the base circle and the positive half axis of the Y axis, i.e. the prolate cycloid corresponding to the reference point, in the rectangular plane coordinate system is:
wherein x and y are coordinates of points on the prolate cycloid;
t is time;
and 2 pi nt is the angle theta rotated by the reference point at the moment t.
In particular to the utility model discloses a single-end cutting tool type pick of long-width cycloid tooth form, R is got the diameter of cutting tool type pick place cylinder, n is got the rotational speed of cutting tool type pick place cylinder, voAnd taking the traction speed of the mining machine where the cutter-type cutting pick is located.
Therefore, the prolate cycloid is determined by parameters such as the diameter of a mining machine roller where a corresponding prolate cycloid tooth-shaped single-head cutter type cutting tooth is located, the rotating speed of the roller, the traction speed of a mining machine and the like.
The specific arc length of the edge part curve is mainly determined according to the unidirectional cutting force of picks on the corresponding roller. The blade part curve is longer and is more wear-resistant, but the resistance received by overlong cutting is correspondingly increased, so that the arc length of the blade part curve is finally determined by considering the cutting power.
The utility model discloses a sword type pick can be used for the mining machine cylinder, and the abominable operating mode such as cutting clamp cash or fault of specially adapted.
The utility model also discloses a cylinder, as shown in fig. 4-6, including the drum body 3 and a plurality of toothholder 7 and a plurality of sword type pick 4, the one end of drum body is fixed with end disc 5, be fixed with the blade 6 of spiral extension on the outer cylinder of drum body, the toothholder dispersion is installed on end disc and the blade. Each tooth holder is provided with a cutter-type cutting pick. And part or all of the cutting picks are the single-head cutting pick with the long-width cycloid tooth shape. Fig. 5 and 6 show only one cutting pick and the installation of the corresponding holder, and are only for the purpose of expressing the installation position and direction of the cutting pick of the present invention.
The utility model discloses a curved extending direction of cutting part of the cutter head body of cutting type pick arranges along the circumference of the cylinder body, and the higher one end of cutting part curve is close to the place ahead of cylinder direction of rotation, and the lower one end of cutting part curve is close to the rear of cylinder direction of rotation, and the higher one end of cutting part of cutter head body cuts into the ore deposit rock earlier when the cylinder carries out the cutting promptly. The height of the point on the blade curve means the distance from the central axis of the drum, and the height is larger when the distance is far.
Claims (6)
1. The utility model provides a single-end sword type pick of long-range cycloid profile of tooth which characterized in that: the cutter comprises a cutter body and a cutter head body, wherein the cutter head body is brazed at the top of the cutter body, and the edge part curve of the cutter head body is a section of long-amplitude cycloid curve.
2. The single-ended cutting pick of the prolate cycloidal tooth form of claim 1, wherein: the cutter head body is made of hard alloy.
3. The single-ended cutting pick of the prolate cycloidal tooth form of claim 2, wherein: the tool bit body is made of tungsten carbide.
4. The single-point cutter type pick of the long cycloidal tooth form of claim 1, 2 or 3, wherein: the prolate cycloid is a base circle with the diameter of R, and the base circle rolls purely along the X-axis direction at the rotating speed n and is simultaneously superposed at the speed voThe locus drawn by any point on the base circle when the base circle moves in the X-axis direction is set to be the initial position of the center of the base circle on the origin of coordinates, the base circle rolls anticlockwise, and the curve equation of a rectangular cycloid corresponding to the intersection point of the base circle and the positive half shaft of the Y axis, namely the reference point, under a planar rectangular coordinate system XY is as follows:
wherein x and y are coordinates of points on the prolate cycloid;
r is the diameter of the roller where the cutter-type cutting pick is located;
n, taking the rotating speed of a roller where the cutter-type cutting pick is located;
votraction of mining machine where the cutting pick is locatedSpeed;
t is time;
and 2 pi nt is the angle theta rotated by the reference point at the time t.
5. A cylinder, characterized by: the spiral cycloidal tooth-shaped single-head cutting pick comprises a drum body, a plurality of tooth holders and cutting type cutting picks, wherein an end disc is fixed at one end of the drum body, spirally extending blades are fixed on the outer cylindrical surface of the drum body, the tooth holders are dispersedly installed on the end disc and the blades, one cutting type cutting pick is installed on each tooth holder, and part or all of the cutting type cutting picks adopt the long-width cycloidal tooth-shaped single-head cutting pick claimed in claim 1, claim 2, claim 3 or claim 4.
6. The drum as claimed in claim 5, wherein: the extension direction of the blade part curve of the cutter head body is arranged along the circumferential direction of the roller body, the higher end of the blade part curve is close to the front of the rotation direction of the roller, and the lower end of the blade part curve is close to the rear of the rotation direction of the roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220022083.4U CN216841662U (en) | 2022-01-05 | 2022-01-05 | Long-amplitude cycloidal tooth-shaped single-end cutter type cutting pick and roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220022083.4U CN216841662U (en) | 2022-01-05 | 2022-01-05 | Long-amplitude cycloidal tooth-shaped single-end cutter type cutting pick and roller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216841662U true CN216841662U (en) | 2022-06-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220022083.4U Active CN216841662U (en) | 2022-01-05 | 2022-01-05 | Long-amplitude cycloidal tooth-shaped single-end cutter type cutting pick and roller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216841662U (en) |
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2022
- 2022-01-05 CN CN202220022083.4U patent/CN216841662U/en active Active
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