CN209924008U - Cutting tooth milling wheel of double-wheel slot milling machine - Google Patents
Cutting tooth milling wheel of double-wheel slot milling machine Download PDFInfo
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- CN209924008U CN209924008U CN201920247810.5U CN201920247810U CN209924008U CN 209924008 U CN209924008 U CN 209924008U CN 201920247810 U CN201920247810 U CN 201920247810U CN 209924008 U CN209924008 U CN 209924008U
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Abstract
The utility model discloses a cutting tooth milling wheel of a double-wheel slot milling machine, which comprises a wheel hub, a cutting tooth, a tooth holder and a support plate; the supporting plate is fixed on the outer ring of the hub, the tooth holders are fixed in corresponding mounting holes in the supporting plate, and each tooth holder is rotatably matched with a cutting pick; the cusps of the cutting teeth on different circumferences and on the same axis are connected to form an envelope line of the milling wheel, the middle part of the envelope line is a straight line segment, the two ends of the envelope line are respectively an arc segment and a parabolic segment, and the three segments of curves are sequentially connected in a tangent mode; the tooth space and the milling radius of all cutting teeth arranged on the circular arc section and the parabolic section are not larger than those of all cutting teeth arranged on the straight section. The linear section cutting pick has high rock-milling blocking rate and high efficiency; the milling distance of the cutting teeth on the two sides is small, the stress is small, the bottom surface and the side wall of the rock soil are milled simultaneously, and the service life of the cutting teeth on the two sides is prolonged; the segmented milling wheel enveloping line design method is beneficial to realizing the parameterized design of the milling wheel, and the design efficiency of the milling wheel is obviously improved.
Description
Technical Field
The utility model relates to an underground continuous wall grooving equipment, in particular to equipment of double round slot milling machine.
Background
The double-wheel slot milling machine is used as the most advanced construction equipment of the underground continuous wall slot forming technology, has the advantages of large slot forming depth, high slot forming verticality, good continuous wall anti-seepage performance and wide stratum adaptability, is favored in domestic and foreign underground continuous wall engineering, takes the milling, crushing and other work on the ground slot as a core system of the double-wheel slot milling machine, and is a key part influencing the construction efficiency of the whole machine.
The cutting teeth on the two sides of the milling wheel not only mill the bottom surface of rock and soil, but also mill the side wall of rock, so that the construction working condition is severe, the abrasion and the eccentric wear are serious, and the construction efficiency of the whole machine is greatly limited.
FIG. 1 shows a double round milling cutter (201810650551.0), including the milling cutter main part, has arranged the bedplate in location on the left wheel hub and the right wheel hub of milling cutter main part, and a plurality of picks of welded fastening on the bedplate, a plurality of picks are according to the cloth tooth rule symmetrical arrangement on left wheel hub and right wheel hub, and the pick divides into according to the pick region: middle pick, outside pick, inboard pick and groove cutting pick. All the cutting picks are arranged at equal intervals in the axial direction and arranged at equal differential angles in the circumferential direction, the number of the cutting picks on the outermost side is four, and the tooth tip points of the cutting picks are lower than the milling circumferential surface; in terms of angle, the deflection angle ranges from-50 ° to 50 °, and the cutting angle ranges from 0 to 50 °. In figure 1 the outside pick of double round milling and milling wheel has two functions, mills the ground bottom surface and mills the lateral wall, and the operating mode is abominable, and the pick deflection angle is great, because the pick mills the rock under the tilt state, its stress is poor to the pick mills the interval and is the same with the main pick, and the pick tooth body easily produces wearing and tearing, and then leads to the alloy head to drop, leads to construction cost to increase.
Figure 2 shows a cutting wheel (201310410515) for a trencher having a drum-like base with at least one holder in which at least one cutting tool is arranged in a peripheral row of the base, wherein in the peripheral row there are arranged cutting teeth having a pointed chisel and a linear cutting edge as tools for cutting earth and rock with a plurality of chisels arranged upstream of the cutting teeth, the chisels being oriented at different angles. The double round milling and milling wheel in figure 2 is a mixed wheel, the layered design of the cutting pick can increase the angle of left and right deflection of the cutting pick, so that the cutting pick can not mill rocks at the optimal angle, the milling resistance of the cutting pick is increased, even the partial wear of the cutting pick is caused, and the service life of the cutting pick is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem who solves:
an object of the utility model is to provide a double round milling cutter, the sectional pick milling cutter design can guarantee to mainly mill the tooth and mill the rock granularity, improves both sides pick stress state simultaneously to promote pick life.
In order to solve the technical problem, the utility model discloses a technical scheme as follows:
a cutting tooth milling wheel of a double-wheel slot milling machine is characterized by comprising a wheel hub, a cutting tooth, a tooth holder and a supporting plate; the supporting plate is fixed on the outer ring of the hub, a plurality of tooth holders are fixed in corresponding mounting holes on the supporting plate, and a cutting pick is rotatably matched and assembled in each tooth holder; the cutting picks are uniformly distributed in the circumferential direction;
the profile curve formed by connecting pick points on different circumferences and on the same axis is used as an envelope curve of the milling wheel, the middle part of the envelope curve is a straight line segment, two ends of the envelope curve are respectively an arc segment and a parabolic segment, and the three segments of curves are sequentially connected in a tangent way;
the tooth space distance t and/or the milling radius R of all cutting picks arranged on the circular arc section and the parabolic section are/is not larger than the tooth space distance t and/or the milling radius R of all cutting picks arranged on the straight section.
Further, the tooth spacing t and/or the milling radius R of each pick arranged on the straight line section is constant.
Further, the tooth spacing t and/or the milling radius R of each pick arranged on the circular arc section is larger as the cutting teeth are closer to the straight line section.
Further, the tooth spacing t and/or milling radius R of each pick arranged on the parabolic segment is larger as closer to the linear segment.
Further, on the straight line segment, the cutting angle of the cutting pick, namely the included angle between the axis of the cutting pick and the track tangent line is minimum and constant.
Further, on the circular arc section, the cutting angle of the cutting pick, namely the included angle between the axis of the cutting pick and the track tangent line, is larger as the cutting pick is farther away from the straight-line section.
Further, on a parabolic segment, the cutting angle of the pick, i.e., the included angle between the pick axis and the trajectory tangent, is greater the further away from the straight segment.
Further, the cutting angle has a value in the range of 45 ° ~ 70 °.
Furthermore, the deflection angles of the picks on the outermost sides of the two ends of the milling wheel, namely the included angles between the pick axes and the end face of the milling wheel, are not more than 45 degrees.
Furthermore, the number of the picks deflected towards one end of the cutting wheel is equal to the number of the picks deflected towards the other end of the cutting wheel.
Further, an included angle beta between the axis P of each cutting pick and the normal F of the envelope line is a constant value.
Further, the deflection angle of the cutting pick, namely the change trend of the included angle between the axis of the cutting pick and the end face of the milling wheel is as follows: the straight line segment is a constant value, and the circular arc segment and the parabolic segment are gradually increased as the circular arc segment and the parabolic segment are farther away from the straight line segment.
The utility model discloses the beneficial effect who reaches:
1. the cutting pick envelope line of the milling wheel is divided into an arc section, a straight line section and a parabolic section, the straight line section cutting pick can finish milling of the ground bottom surface by the main milling area, and the cutting picks on two sides can finish milling of the ground bottom surface and the side wall simultaneously. The linear section cutting pick has high rock-forming rate and high efficiency in milling rocks; the milling distance of the picks on the two sides is small, the stress is small, and the service life of the picks on the two sides is prolonged.
2. The side inclination angle design principle of the cutting pick can ensure that the cutting pick is worn uniformly in the milling process, so that the eccentric wear of the cutting pick is avoided, and the service life of the cutting pick is prolonged. Meanwhile, the segmented milling wheel enveloping line design method is beneficial to realizing the parameterized design of the milling wheel, not only ensures the operating performance of the milling wheel, but also obviously improves the design efficiency of the milling wheel.
Drawings
FIG. 1 is a prior art two-turn milling cutter wheel;
FIG. 2 is a prior art cutting wheel of a trencher;
FIG. 3 is a schematic view of the overall structure of the milling wheel of the present invention;
FIG. 4 is a left side view of FIG. 3;
FIG. 5 is a schematic view of a wrapping line of the milling wheel of the present invention;
figure 6 is a schematic view of the angle of deflection of the cutting pick of the cutting wheel of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 3 and 4, the utility model provides a double round milling cutter includes: hub 1, pick 2, toothholder 3 and backup pad 4. The backup pad 4 is fixed on wheel hub 1 with the welded mode, and the toothholder 3 welds in the 4 mounting holes of backup pad with certain positioning parameter, and toothholder 3 and 2 cooperation assemblies of pick, pick 2 can be rotatory in toothholder 3.
The terms mentioned in this scheme are explained below:
and setting the rotation center O, the radial X and the axial Y of the milling wheel.
Envelope curve of the milling wheel: the relationship curve between the milling radius and the axial distance of the cutting teeth of the milling wheel is a profile curve formed by connecting the tooth point points 21 of all the cutting teeth 2 when the circumferential angle of all the cutting teeth on the milling wheel is zero.
Cutting angle δ: the included angle between the cutting pick axis P and the track tangent line Q.
Deflection angle α: and the included angle between the cutting pick axis P and the end face of the milling wheel.
Referring to fig. 5, a right-cutting pick milling wheel is taken as an example, and the milling wheel is basically characterized in that an envelope 5 of a cutting pick is divided into three parts, namely a circular arc section 51, a straight line section 52 and a parabolic line section 53 from left to right, and three curves are tangent to each other. The cutting picks of the straight line section 52 mainly complete the milling operation on the bottom surface of the rock soil, and the cutting picks of the circular arc section 51 and the parabolic section 53 not only complete the milling operation on the bottom surface of the rock soil, but also complete the scraping operation on the groove wall. The tooth space t and the milling radius R of the cutting teeth 2 on the milling wheel are increased from left to right and then reduced, the tooth space t of the cutting teeth 2 on the straight line section 52 is the largest and remains unchanged, the arrangement mode can ensure the formation rate of rocks in a main milling area, meanwhile, the stress of the cutting teeth on two sides is reduced, and the service life of the cutting teeth is prolonged.
As shown in fig. 6, the design principle of the deflection angle α of the cutting pick 2 is: an included angle beta between the axis P of the cutting pick 2 and the normal F of the envelope line 5 is constant, so that the cutting pick 2 is ensured to be uniformly worn in the milling process, and the eccentric wear of the cutting pick 2 is reduced; in order to ensure that picks on two sides can mill the stress state of the bottom surface and the side wall of the milling groove rock soil, the change trend of the deflection angle is as follows: the straight line section is unchanged, the circular arc section and the parabolic line section are gradually increased from inside to outside, and the deflection angle alpha of the cutting tooth 2 at the outermost side of the two ends is not more than 45 degrees. The number of the left deflection and the right deflection in all the cutting teeth 2 of the whole milling wheel is equal, and the axial force borne by the whole milling wheel is reduced.
As shown in figures 3 and 4, the cutting angle delta of the cutting pick 2 is the smallest and unchanged in the straight line section 52, gradually increases from the inner side to the outer side in the circular arc section 51 and the parabolic section 53, and is matched with the distance t between the two smaller cutting picks to ensure that the alloy heads of the cutting picks are mutually protected, so that the abrasion of the cutting picks on two sides is reduced, according to different types and crack development of the milled rock, the available range of the cutting angle is 45 ~ 70 degrees, the cutting picks 2 are uniformly distributed in the circumferential direction, the stability of the milling process is ensured, and the vibration of a milling wheel is reduced.
The profile curves formed by connecting cutting tooth tips on different circumferences and rotating to the same axial direction Y are envelope lines of the milling wheel, and all the envelope lines form an envelope surface of the milling wheel. Therefore, the utility model discloses a milling wheel enveloping surface divide into circular arc district, orthoscopic district and parabola district according to the actual work operating mode. The uniform axial distance of the cutting teeth is mainly considered in the linear area, and the axial distance is gradually reduced from the inner side to the outer side in the arc area and the parabola area, so that the rock block milling rate of the milling wheel is ensured, and the mutual protection of adjacent cutting tooth alloy heads in the arc area and the parabola area is ensured, and the abrasion of a cutting tooth body is avoided; in addition, the axis of the cutting tooth and the normal line of the envelope surface keep a certain angle, the rotation of the milling wheel in the milling process is guaranteed, the eccentric wear condition of the cutting tooth is avoided, and the service life of the cutting tooth is prolonged.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be considered as the protection scope of the present invention.
Claims (12)
1. A cutting tooth milling wheel of a double-wheel slot milling machine is characterized by comprising a wheel hub, a cutting tooth, a tooth holder and a supporting plate; the supporting plate is fixed on the outer ring of the hub, a plurality of tooth holders are fixed in corresponding mounting holes on the supporting plate, and a cutting pick is rotatably matched and assembled in each tooth holder; the cutting picks are uniformly distributed in the circumferential direction;
profile curves formed by connecting pick points on different circumferences and rotated to the same axis are used as envelope lines of the milling wheel, the middle part of the envelope line is a straight line segment, two ends of the envelope line are respectively an arc segment and a parabolic segment, and the three segments of curves are sequentially connected in a tangent way;
the tooth space distance t and/or the milling radius R of all cutting picks arranged on the circular arc section and the parabolic section are/is not larger than the tooth space distance t and/or the milling radius R of all cutting picks arranged on the straight section.
2. A two-wheel slot milling cutter cutting pick cutterhead according to claim 1 wherein the tooth spacing t and/or milling radius R of each pick arranged in a straight line section is constant.
3. A two-wheel slot milling machine cutting pick cutterhead according to claim 1 or claim 2, wherein the teeth spacing t and/or milling radius R of each pick arranged in a circular segment is greater towards the straight section.
4. A two-wheel slot milling cutter cutting pick cutterhead according to claim 1 or claim 2, wherein the teeth spacing t and/or milling radius R of each cutting pick arranged on the parabolic segment is greater towards the straight section.
5. The two-wheel slot milling machine cutting pick cutterhead of claim 1 wherein the cutting pick cutting angle, i.e. the angle between the pick axis and the tangent to the path, is minimal and constant on a straight line segment.
6. The two-wheel slot milling machine cutting pick cutterhead of claim 1, wherein the cutting angle of the cutting pick, i.e. the included angle between the cutting pick axis and the tangent of the path, is greater the further away from the straight section on the circular arc section.
7. The two-wheel slot milling machine cutting pick cutterhead of claim 1, wherein in the parabolic section, the cutting angle of the cutting pick, i.e. the included angle between the cutting pick axis and the tangent of the path, is greater the further away from the straight section.
8. The double round slot milling cutter pick cutterhead of claims 5, 6 or 7, wherein the cutting angle is in the range of 45 ° ~ 70 °.
9. The two-wheel slot milling machine cutting pick cutterhead of claim 1, wherein the deflection angle of the outermost cutting pick at each end of the cutterhead, i.e. the angle between the cutting pick axis and the end face of the cutterhead, does not exceed 45 °.
10. The two-wheel slot milling cutter pick cutterhead of claim 1 wherein all of the picks on the cutterhead are deflected toward one end by an equal number to the other end.
11. The double round slot milling cutter cutting pick cutterhead of claim 1 wherein the angle β between the axis P of each cutting pick and the normal F of the envelope is constant.
12. The cutting pick cutterhead of a two-wheel slot milling machine of claim 1 wherein the variation trend of the pick deflection angle, i.e. the included angle between the pick axis and the cutterhead end face, is: the straight line segment is a constant value, and the circular arc segment and the parabolic segment are gradually increased as the circular arc segment and the parabolic segment are farther away from the straight line segment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920247810.5U CN209924008U (en) | 2019-02-27 | 2019-02-27 | Cutting tooth milling wheel of double-wheel slot milling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920247810.5U CN209924008U (en) | 2019-02-27 | 2019-02-27 | Cutting tooth milling wheel of double-wheel slot milling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209924008U true CN209924008U (en) | 2020-01-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920247810.5U Withdrawn - After Issue CN209924008U (en) | 2019-02-27 | 2019-02-27 | Cutting tooth milling wheel of double-wheel slot milling machine |
Country Status (1)
| Country | Link |
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| CN (1) | CN209924008U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109811818A (en) * | 2019-02-27 | 2019-05-28 | 江苏徐工工程机械研究院有限公司 | A kind of two-wheel flute milling machine pick milling wheel |
-
2019
- 2019-02-27 CN CN201920247810.5U patent/CN209924008U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109811818A (en) * | 2019-02-27 | 2019-05-28 | 江苏徐工工程机械研究院有限公司 | A kind of two-wheel flute milling machine pick milling wheel |
| CN109811818B (en) * | 2019-02-27 | 2023-10-03 | 江苏徐工工程机械研究院有限公司 | Cutting pick milling wheel of double-wheel slot milling machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20200110 Effective date of abandoning: 20231003 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20200110 Effective date of abandoning: 20231003 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |