CN216841663U - Long cycloidal tooth-shaped multi-head cutter-type pick and roller - Google Patents
Long cycloidal tooth-shaped multi-head cutter-type pick and roller Download PDFInfo
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- CN216841663U CN216841663U CN202220024184.5U CN202220024184U CN216841663U CN 216841663 U CN216841663 U CN 216841663U CN 202220024184 U CN202220024184 U CN 202220024184U CN 216841663 U CN216841663 U CN 216841663U
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Abstract
The utility model relates to a long-amplitude cycloid tooth multi-head cutter-type pick and a roller, a plurality of cutter head bodies are arranged on the multi-head cutter-type pick, the cutting part curve of the cutter head bodies is a long-amplitude cycloid, the cutter head bodies are arranged at intervals, and the cutter head bodies are 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 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 multi-head cutter-type picks. The utility model discloses a contact area of cutting type pick and ore body has increased nearly ten times or ten times, therefore the pressure that cutting type pick tool bit receives is showing and is reducing, and the lower tool bit body of cutting part curve can continue to use behind the higher tool bit body wearing and tearing of cutting part curve 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 cutting pick is the bull tool form cutting pick of 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-width cycloid profile of tooth bull tool 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:
a long-amplitude cycloid tooth-shaped multi-head cutter-type cutting pick comprises a cutter body and a plurality of cutter head bodies, wherein the cutter head bodies are brazed at the top of the cutter body, and the edge part curve of each cutter head body is a section of long-amplitude cycloid.
The edge curves of the cutter head bodies are respectively positioned on different planes which are parallel to each other, the height of the edge curves of the cutter head bodies is different, the higher the edge curve is, the longer the edge curve length of the cutter head body is, the higher the edge curve is, the more the front end of the cutter head body is, and intervals exist among the cutter head bodies in the extending direction of the edge curve.
The tool bit body is made of hard alloy.
The tool bit body is made of tungsten carbide.
The cutter head bodies are preferably arranged in 2-3 numbers.
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 simultaneously superposes a track drawn by any point on the base circle when the base circle translates along the X-axis direction at the speed vo, the initial position of the center of the base circle is set on the origin of coordinates, the base circle rolls anticlockwise, and the curve equation of the prolate 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;
the base circle diameter R of the edge part curve of the cutter head body with the highest edge part curve is the diameter of a roller where the cutter-type picks are positioned, the R of the edge part curves of other cutter head bodies are smaller than the diameter of the roller where the cutter-type picks are positioned, and the R of the edge part curve of the cutter head body with the lower edge part curve is smaller;
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.
After sorting according to the height of the edge part curve, the difference of the radii of the base circles corresponding to the edge part curves of two adjacent heights is preferably larger than or equal to the average feed amount of the cutting pick.
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 cycloid tooth-shaped multi-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 front end of the cutter head body is close to the front of the rotation direction of the roller, the rear end of the cutter head body is close to the rear of the rotation direction of the roller, for any cutter head 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 beneficial effects of the utility model are 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 movement track 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 contact area of cutter head body and ore (coal) rock mass of cutter type pick has increased nearly ten times or more than ten times than conventional circular cone or pyramid cutter head body, consequently is showing and has reduced the utility model discloses a pressure that cutter head body receives on the cutter type pick has reduced the violent wearing and tearing of pick, has obviously prolonged the utility model discloses a life of cutter head body of cutter type pick.
Because a plurality of cutter head bodies are arranged on one cutter-shaped cutting tooth, when the cutter head body with the highest cutting edge curve is worn and failed, the cutter head body with the next highest cutting edge curve can be continuously used without being influenced, and when other cutter head bodies are worn and failed, the cutter head body with the lowest cutting edge curve can be continuously used, and so on, the service life of the long-amplitude cycloid tooth-shaped multi-head cutter-shaped cutting tooth can be obviously prolonged.
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 the 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, edge curve; 3. a drum body; 4. a cutter-shaped pick; 5. an end plate; 6. a blade; 7. a tooth holder.
Detailed Description
The utility model discloses a long-range cycloid profile of tooth bull tool type pick (can be referred to as bull tool type pick for short), as shown in fig. 2, 3, including cutter body and a plurality of 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 edge curves of the cutter head bodies are respectively positioned on different planes which are parallel to each other, and the heights of the edge curves of the cutter head bodies are different. The height of the blade curve means the distance between the blade curve and the central axis of the roller, and the distance is high. The higher the edge curve is, the longer the edge curve length of the cutter head body is. If the ends of the bit body corresponding to the two ends of the edge curve are referred to as the front end and the rear end, respectively, the front end of the bit body having the higher edge curve is located farther forward, and the bit bodies are spaced apart from each other in the extending direction of the edge curve. In addition, the higher end of the same blade curve is the front end, and the lower end is the rear end.
Therefore, the cutter head body with the higher cutting edge curve participates in cutting firstly, and when the cutter head body with the lower cutting edge curve is worn out, the cutter head body can be continuously used without being affected, so that the service life of the long-breadth cycloidal tooth-shaped multi-head cutter-type cutting pick can be obviously prolonged. The cutting edge curve length of the cutter head body with the lower cutting edge curve height is set to be shorter, gaps are arranged among the cutter head bodies in the extension direction of the cutting edge curve, and the cutter head body with the lower cutting edge curve is easier to feed when the cutter head body begins to participate in cutting.
The tool bit body can be made of hard alloy.
Further, the tool bit body is preferably made of tungsten carbide.
The cutter head bodies are preferably arranged in 2-3 numbers.
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 long-width cycloid tooth multi-head cutter-type pick, the diameter of the roller where the cutter-type pick is located is taken from the base diameter R of the cutting part curve of the cutter head body with the highest cutting part curve, the R of the cutting part curves of other cutter head bodies are all smaller than the diameter of the roller where the cutter-type pick is located, and the lower the cutting part curve, the smaller the R of the cutting part curve of the cutter head body is; n is the rotating speed v of the roller where the cutting pick is locatedoAnd taking the traction speed of the mining machine where the cutter type cutting pick is positioned.
Therefore, the prolate cycloid is mainly determined by parameters such as the diameter of a mining machine roller where the corresponding prolate cycloid tooth-shaped multi-head cutter-type cutting pick 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 a cutting pick on a 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.
After sorting according to the height of the edge part curve, the difference between the radii of the base circles corresponding to the edge part curves of two adjacent heights is preferably greater than or equal to the average feed amount of the cutting pick, such as 16 mm.
The utility model discloses a sword type pick also can be used to the coal-winning 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 tool-shaped cutting picks adopt the long-amplitude cycloid tooth-shaped multi-head tool-shaped cutting pick. 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 tool bit body of cutting type pick arranges along the circumference of the cylinder body, and the front end of the tool bit body is close to the place ahead of cylinder direction of rotation, and the rear end of the tool bit body is close to the rear of cylinder direction of rotation. Namely, when the roller cuts, the cutter head body with the higher edge firstly cuts into the ore rock, and the cutter head body with the lower edge later cuts into the ore rock. Further, in the single cutter head body, it is preferable that the end having the higher curved edge portion is located forward in the rotational direction of the drum, and the end having the lower curved edge portion is located rearward in the rotational direction of the drum.
Claims (9)
1. The utility model provides a long-range cycloid profile of tooth bull cutting tool type pick which characterized in that: the cutter comprises a cutter body and a plurality of cutter head bodies, wherein the cutter head bodies are brazed at the top of the cutter body, and the edge part curve of each cutter head body is a section of prolate cycloid.
2. The multi-headed cutting pick of claim 1, wherein: the edge curves of the cutter head bodies are respectively positioned on different planes which are parallel to each other, the height of the edge curves of the cutter head bodies is different, the higher the edge curve is, the longer the edge curve length of the cutter head body is, the higher the edge curve is, the more the front end of the cutter head body is, and intervals exist among the cutter head bodies in the extending direction of the edge curve.
3. The multi-headed cutting pick of the prolate cycloidal tooth form of claim 2, wherein: the tool bit body is made of hard alloy.
4. The multi-headed cutting pick of claim 3, wherein: the tool bit body is made of tungsten carbide.
5. The multi-headed cutting pick of claim 4, wherein: the number of the cutter head bodies is 2-3.
6. The multi-headed cutting pick of claim 2, 3, 4 or 5, 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 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;
the base circle diameter R of the edge part curve of the cutter head body with the highest edge part curve is the diameter of a roller where the cutter-type picks are positioned, the R of the edge part curves of other cutter head bodies are smaller than the diameter of the roller where the cutter-type picks are positioned, and the R of the edge part curve of the cutter head body with the lower edge part curve is smaller;
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.
7. The extended cycloid tooth multi-start cutting pick of claim 6, wherein: after sorting according to the height of the edge part curve, the difference of the radiuses of the base circles corresponding to the edge part curves of two adjacent heights is at least equal to the average feed amount of the cutting teeth of the cutter type.
8. A cylinder, characterized by: the spiral cycloidal tooth-shaped multi-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-amplitude cycloidal tooth-shaped multi-head cutting pick claimed in claim 1, 2, 3, 4, 5, 6 or 7.
9. The extended cycloid tooth multi-start cutting pick of claim 8, 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 front end of the cutter head body is close to the front of the rotation direction of the roller, the rear end of the cutter head body is close to the rear of the rotation direction of the roller, for any cutter head 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 |
|---|---|---|---|
| CN202220024184.5U CN216841663U (en) | 2022-01-05 | 2022-01-05 | Long cycloidal tooth-shaped multi-head cutter-type pick and roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220024184.5U CN216841663U (en) | 2022-01-05 | 2022-01-05 | Long cycloidal tooth-shaped multi-head cutter-type pick and roller |
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| Publication Number | Publication Date |
|---|---|
| CN216841663U true CN216841663U (en) | 2022-06-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220024184.5U Active CN216841663U (en) | 2022-01-05 | 2022-01-05 | Long cycloidal tooth-shaped multi-head cutter-type pick and roller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216841663U (en) |
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2022
- 2022-01-05 CN CN202220024184.5U patent/CN216841663U/en active Active
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