CN115369732A - Arrangement method of cutter of crushing device and crushing device - Google Patents
Arrangement method of cutter of crushing device and crushing device Download PDFInfo
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- 238000003801 milling Methods 0.000 claims description 77
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- 238000005520 cutting process Methods 0.000 abstract description 6
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/30—Auxiliary apparatus, e.g. for thawing, cracking, blowing-up, or other preparatory treatment of the soil
- E02F5/305—Arrangements for breaking-up hard ground
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
- E01C23/12—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for taking-up, tearing-up, or full-depth breaking-up paving, e.g. sett extractor
- E01C23/122—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for taking-up, tearing-up, or full-depth breaking-up paving, e.g. sett extractor with power-driven tools, e.g. oscillated hammer apparatus
- E01C23/127—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for taking-up, tearing-up, or full-depth breaking-up paving, e.g. sett extractor with power-driven tools, e.g. oscillated hammer apparatus rotary, e.g. rotary hammers
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/10—Making by using boring or cutting machines
- E21D9/1006—Making by using boring or cutting machines with rotary cutting tools
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Abstract
The invention relates to a method for arranging cutters of a crushing device and the crushing device. The arrangement method of the cutters of the crushing device comprises the following steps: providing a crushing device, wherein the crushing device comprises a rotor and a plurality of cutters arranged on the peripheral surface of the rotor, and the plurality of cutters are arranged in a plurality of spiral lines; determining the distance T between two adjacent cutters in the axial direction of the rotor 0 (ii) a According to the distance T 0 Calculating the number S of tools 0 (ii) a Determining the number of spirals L n (ii) a Judging the number S of the cutters 0 Whether or not it is the number L of spirals n Integer multiples of; if so, then according to the pitch T 0 Determining the position of the cutter in the axial direction of the rotating body; if not, according to the formula S = L n *int(S 0 /L n ) Number of cutting tools S 0 Correcting to obtain the number S of the cutters, and then obtaining the number of the cutters according to the cuttersThe quantity S calculates the distance T between two adjacent cutters in the axial direction of the rotating body, and the positions of the cutters in the axial direction of the rotating body are determined according to the distance T. The cutters of the crushing device are arranged by adopting the arrangement method of the cutters of the crushing device.
Description
Technical Field
The invention relates to the technical field of engineering machinery, in particular to a method for arranging cutters of a crushing device and the crushing device.
Background
Along with the development of construction and maintenance work of roads, subways, tunnels and other traffic facilities in China, the quantities of underground excavation, mountain tunnel tunneling and road overhaul and maintenance work are increasingly expanded, the work is inevitably milled and crushed for fragile engineering media such as underground rocks, mountains, road surfaces and the like, the crushing process is usually completed by a rotating device consisting of a plurality of groups of milling and crushing cutters, most of arrangement designs of the milling and crushing cutters in the market at present depend on experience, especially, a key parameter of cutter spacing is usually simply designed into an arithmetic progression, however, the size of the cutter spacing is related to the milling and crushing effect on one hand and the cost and construction economy of the milling and crushing device on the other hand, and the problems of incomplete milling and crushing, high cutter construction cost and the like in the construction process can be caused by the improper cutter arrangement design.
It is noted that the information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention provides an arrangement method of cutters of a crushing device and the crushing device, which can adjust the distance between the cutters according to different working conditions and improve the reasonability of cutter arrangement.
According to one aspect of the present invention, there is provided a method of arranging cutters of a crushing device, comprising:
providing a crushing device, wherein the crushing device comprises a rotating body and a plurality of cutters arranged on the peripheral surface of the rotating body, and the plurality of cutters are arranged in a plurality of spiral lines;
determining the distance T between two adjacent cutters in the axial direction of the rotor 0 ；
According to the distance T 0 Calculating the number S of the cutters 0 ；
Determining the number of spirals L n ；
Judging the number S of the cutters 0 Whether or not it is the number L of spirals n Integer multiples of;
if so, then according to the pitch T 0 Determining the position of the cutter in the axial direction of the rotating body;
if not, according to the formula S = L n *int(S 0 /L n ) Number of cutting tools S 0 And correcting to obtain the number S of the cutters, calculating the distance T between two adjacent cutters in the axial direction of the rotating body according to the number S of the cutters, and determining the positions of the cutters in the axial direction of the rotating body according to the distance T.
In some embodiments, the distance T between two adjacent cutters in the axial direction of the rotor is determined 0 The operation of (1) comprises: calculating the actual milling thickness T of the crushing device according to preset working parameters of the crushing device h (ii) a If actual milling thickness T h If the distance is less than the first constant M, the distance T is calculated according to a first formula 0 (ii) a If the actual milling thickness T h If the distance is greater than or equal to the first constant M and less than or equal to the second constant N, the distance T is calculated according to a second formula 0 (ii) a If the actual milling thickness T h If it is greater than the second constant N, the distance T is calculated according to a third formula 0 。
In some embodiments, the preset operating parameters comprise a rotation speed n, an advancement speed v, a milling depth H and a milling diameter D, and the actual milling thickness T of the crushing device is calculated from the preset operating parameters of the crushing device h The operation of (1) comprises: according to the formula
Calculating T h Wherein, in the step (A),
in some embodiments, the resulting spacing T is calculated according to a second formula 0 Is greater than the distance T calculated according to the first formula 0 Is smaller than the pitch T calculated according to the third formula 0 The value of (c).
In some embodiments, the first formula is T 0 ＝K t Wherein, K is t The milling width of the tool.
In some embodiments, the second formula is
Wherein A, B and C are constants.
In some embodiments, the third formula is
Wherein, K t For milling width of tool, T p Beta is the effective breakout angle of the milled material, and is the maximum effective breakout depth of the milled material.
In some embodiments, according to the spacing T 0 Calculating the number S of tools 0 The operation of (1) comprises: according to the formula S 0 ＝int(W d /T 0 ) Calculating the number S of cutters 0 ，W d The milling width of the crushing device.
In some embodiments, the number of spirals L is determined n The operation of (1) comprises: determining a phase angle Q which the single helix occupies in the circumferential direction of the rotor; according to the formula L n * Q = m 360 ° determination of L n And m is an integer greater than 0.
In some embodiments, the method of arranging the crushing device cutter further comprises: if the number of the cutters S 0 Is the number of spirals L n Integral multiple of (S) is determined by the number of cutting tools 0 Calculating the circumferential difference angle of two adjacent cutters in the circumferential direction of the rotating body
And according to the difference angle of the circumferences
Determining the position of the tool in the circumferential direction of the rotor; if the number of cutters S 0 Not the number of spirals L n Integral multiple of the number of the cutters, calculating the circumferential difference angle of two adjacent cutters in the circumferential direction of the rotating body according to the number S of the cutters
According to the difference angle of the circumferences
The position of the tool in the circumferential direction of the rotor is determined.
In some embodiments of the present invention, the,
according to another aspect of the present invention, there is provided a crushing device, the cutter of which is arranged using the arrangement method of the cutter of the crushing device.
Based on the technical scheme, the invention provides an arrangement method of cutters of a crushing device, which comprises the steps of firstly determining the axial distance between two adjacent cutters on a rotor, then calculating the number of cutters according to the distance, then correcting the number of cutters according to the number of spiral lines, and further determining the final axial distance between two adjacent cutters on the rotor, so that the distance between the cutters can be adjusted according to different working conditions to obtain the optimal cutter distance, thereby ensuring the crushing effect of the crushing device and improving the construction adaptability of the crushing device; and the distance between the cutters is corrected based on the relation between the number of the spiral lines and the number of the cutters, so that the layout of the cutters can be further rationalized, and the crushing device can be conveniently produced and processed. By adding the steps of correcting the number of the cutters, the customization requirements of customers can be met, and quick response to the customization requirements of the customers of the crushing device is realized.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention and do not constitute a limitation of the invention. In the drawings:
fig. 1a and 1b show a front view and a left side view, respectively, of an embodiment of the crushing plant according to the invention;
FIG. 2 is a flow chart illustrating the determination of the spacing and number of cutters in one embodiment of the method of arranging cutters in a crushing device of the present invention;
fig. 3 shows a schematic illustration of the cutter spacing and the effect of material breakout in an embodiment of the crushing device according to the invention;
fig. 4 shows a schematic view of the actual milling thickness of the tool in an embodiment of the crushing plant according to the invention;
FIG. 5 shows a flow chart of the knife arrangement in one embodiment of the method of arranging the knives of the crushing device of the present invention;
FIG. 6 is a schematic view showing the arrangement position of cutters in one embodiment of the arrangement method of cutters of the crushing apparatus of the present invention;
FIG. 7 shows a schematic structural view of an embodiment of the crushing device of the present invention;
figures 8a, 8b and 8c show three movement patterns, respectively, of an embodiment of the crushing device according to the invention;
in the figure:
1. a rotating body; 2. and (4) a cutter.
Detailed Description
The technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It should be apparent that the described embodiments are only some of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "central," "lateral," "longitudinal," "front," "rear," "left," "right," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the scope of the invention.
In some embodiments of the crushing device provided by the present invention, as shown in fig. 1, the crushing device comprises a rotor 1 and a plurality of cutters 2 arranged on the outer peripheral surface of the rotor 1, the plurality of cutters 2 being arranged in a plurality of helical lines, the milling width and the milling diameter of the crushing device being respectively shown as W d And D.
In some embodiments, the method of arranging the cutters of the crushing device of the present invention comprises:
determining the distance T between two adjacent cutters 2 in the axial direction of the rotor 1 0 ；
According to the distance T 0 Calculating the number S of tools 2 0 ；
Determining the number of spirals L n ；
Judging the number S of the cutters 0 Number of spirals L n Integer multiples of;
if so, then according to the pitch T 0 Determining the position of the tool 2 in the axial direction of the rotor 1;
if not, according to the formula S = L n *int(S 0 /L n ) Number of cutting tools S 0 And correcting to obtain the number S of the cutters, calculating the distance T between two adjacent cutters 2 in the axial direction of the rotating body 1 according to the number S of the cutters, and determining the positions of the cutters 2 in the axial direction of the rotating body 1 according to the distance T.
As shown in fig. 2, at a distance T according to the tool 0 Preliminary determination of the number of tools S 0 Then, the number of tools q = S is determined 0 /L n And if the number of the cutters is not an integer, rounding q, recalculating the number S of the cutters and calculating the final cutter spacing T. Thus, the distance T between the cutters is preliminarily determined 0 Then by the number of cutters S 0 And the number of spirals L n Distance T to the cutting tool 0 Corrected to obtain the mostThe final cutter spacing T method can realize the adjustment of the cutter spacing according to different working conditions so as to obtain the optimal cutter spacing, rationalize the layout of the cutters, facilitate the production and processing of the crushing device, ensure the crushing effect of the crushing device, improve the construction adaptability of the crushing device, meet the customization requirements of customers and realize the quick response to the customization requirements of the customers of the crushing device.
In the actual operation process, for different engineering medium materials and milling depths, the material collapse conditions caused in the milling and crushing process of the cutter of the crushing device are different, wherein the milling thickness has a large influence on the material collapse conditions, so that in order to fully utilize the material collapse effect to obtain a good milling and crushing effect, the distance between the cutters needs to be calculated based on the milling thicknesses under different working conditions.
In some embodiments, the distance T between two adjacent tools 2 in the axial direction of the rotor 1 is determined 0 The operation of (1) comprises: calculating the actual milling thickness T of the crushing plant according to preset operating parameters of the crushing plant h (ii) a If the actual milling thickness T h If the distance is less than the first constant M, the distance T is calculated according to a first formula 0 (ii) a If the actual milling thickness T h If the distance is greater than or equal to the first constant M and less than or equal to the second constant N, the distance T is calculated according to a second formula 0 (ii) a If the actual milling thickness T h If it is greater than the second constant N, the distance T is calculated according to a third formula 0 。
The first constant M and the second constant N are related to the physical properties of the engineering medium material and can be obtained through milling tests of different milling depths and different cutter intervals, and generally, the value range of the first constant M is 3-5 mm, and the value range of the second constant N is 30-40 mm.
By the method, under the condition that the actual milling thickness Th is different, different calculation modes are adopted to determine the distance T between two adjacent cutters 2 0 The optimal distance T of the cutter 2 under the corresponding working condition can be obtained 0 So as to fully utilize the caving effect of the material, thereby greatly improving the crushing device to different working conditionsThe adaptability of (2) improves the crushing effect of the crushing device.
The inventor finds that the problem that partial materials between the cutters cannot be removed when the cutter spacing is designed to be too large, and repeated crushing is caused when the cutter spacing is designed to be too small, so that the power waste of a main machine is caused; in addition, the inventor finds out through experiments that when the thickness T is actually milled h Very small (i.e. T) h Less than M), the caving effect of the material can be ignored, and the cutter is arranged densely to ensure the milling effect; when the thickness T is actually milled h Smaller (i.e., M.ltoreq.T) h N) or less), and the actual milling thickness T h The larger the material is, the larger the collapse range of the material is, and the corresponding distance T between the cutters is required 0 The setting is larger so as to fully utilize the collapse effect of the material; when actual milling thickness T h At greater time (i.e. T) h N) only the material of the upper surface part is broken off, the material at the deeper part is not broken off basically, namely the distance T of the cutters 0 There is a maximum beyond which the breakout range of the material is substantially unchanged.
Based on the above considerations, in some embodiments, the resulting spacing T is calculated according to a second formula 0 Is greater than the distance T calculated according to the first formula 0 Is smaller than the pitch T calculated according to the third formula 0 The value of (c).
That is, when designing the arrangement scheme of the tools, not only the distance between the tools should be avoided to be too small or too large, but also the influence of the distance between the tools on the material collapse condition should be fully considered, so as to fully utilize the collapse effect of the material and ensure the removal rate of the material while reducing the waste of the power of the main machine as much as possible.
As shown in FIG. 3, the distance between two adjacent cutters 2 is shown as T, and the distance T is the finally determined distance between two adjacent cutters 2, which is the pair-pitch T 0 A numerical value obtained after correction; the milling width of the tool 2 is shown as K t The maximum effective breakout depth of the milled material is shown as T p The effective breakout angle of the milled material is shown as β.
In some embodiments, the first formula is T 0 ＝K t Wherein, K is t The milling width of the tool 2.
When T is h When the distance is less than M, the collapse effect of the material can be ignored, and the distance T is measured 0 Arranged to mill the width K of the tool 2 t Equal, sufficient crushing of the material can be ensured.
In some embodiments, the second formula is
Wherein A, B and C are constants.
I.e. when M is less than or equal to T h When the milling thickness is less than or equal to N, the actual milling thickness T h The larger the material is, the larger the collapse range of the material is, and the collapse effect of the material is fully utilized, so that the milling thickness T is increased h Is enlarged, the distance T of the cutters 2 is correspondingly increased 0 The arrangement is larger to reduce the number of cutters 2 while ensuring a higher removal rate of material between adjacent cutters 2, thereby reducing the machining and construction maintenance costs of the crushing plant and also reducing the waste of power to the main machine. Wherein, A, B and C are related to the physical properties of the engineering medium material, and can be obtained by milling tests of different milling depths and different cutter intervals.
In some embodiments, the third formula is
Wherein, K t For milling width, T, of tool 2 p Beta is the effective breakout angle of the milled material, and is the maximum effective breakout depth of the milled material.
When T is shown in FIG. 3 h When the concentration is larger than N, the material on the upper surface part is seen to be cracked, and the cracking depth is T p The material at the deeper part is basically not broken, namely the broken range of the material is not along with the distance T of the cutter 0 Is increased, and in order to avoid the problem that the space between the cutters is too large and the material between the cutters cannot be removed, the space T can be adjusted by the third formula 0 Is limited. Wherein the maximum effective breakout depth T p And the effective collapse angle beta is related to the physical properties of the engineering medium material, and can be obtained through milling tests of different milling depths and different cutter intervals.
In some embodiments, the preset working parameters comprise a rotation speed n, an advancement speed v, a milling depth H and a milling diameter D, and the actual milling thickness T of the crushing device is calculated from the preset working parameters of the crushing device h The operation of (1) comprises: according to the formula
Calculating T h Wherein, in the process,
as shown in fig. 4, during the operation of the crushing device, the movement of the tool 2 is a compound movement of a rotary movement and a horizontal movement, and the distance between two milling envelopes (shown as two arcs in the figure) of the tool 2 shown in fig. 4 is the actual milling thickness T obtained after one rotation of the rotor 1 of the crushing device h The actual milling thickness T of the crushing device can be calculated only by knowing the parameters of the crushing device such as the rotating speed n, the advancing speed v, the milling depth H, the milling diameter D and the like under different working conditions h The size of the crushing device is further designed according to the cutter arrangement scheme under the corresponding working conditions, so that the adaptability of the crushing device to different working conditions is improved. The rotation speed n and the advancing speed v are motion parameters of the crushing device determined based on the performance of the main machine, and the milling depth H and the milling diameter D are determined according to actual construction operation requirements.
In order to ensure that the milling and crushing process of the crushing device is smoothly carried out, the cutters 2 should be uniformly arranged in the axial direction of the rotor 1 as much as possible.
Thus, in some embodiments, the distance T is based on 0 Calculating the number S of tools 2 0 The operation of (1) comprises: according to the formula S 0 ＝int(W d /T 0 ) Calculating the number S of cutters 0 ，W d The milled width of the crushing device.
Wherein the milling width W of the crushing device d Is determined according to the actual construction operation requirement and formula S 0 ＝int(W d /T 0 ) Is to the milling width W d And a distance T 0 The ratio of (A) is rounded to obtain the number S of the cutters as an integer 0 In order to improve the operability when the tool 2 is actually arranged.
In some embodiments, the number of spirals L is determined n The operation of (1) comprises: determining the phase angle Q which the individual spiral occupies in the circumferential direction of the rotor 1; according to the formula L n * Q = m 360 ° determination of L n And m is an integer greater than 0.
Such setting can guarantee that many helices are evenly arranged in the circumferencial direction of rotor 1, helps improving breaker's construction quality. In some embodiments, the number of spirals L n The value of (A) is usually 2-4, and can be adjusted according to different working conditions.
In order to further increase the stability of the milling and crushing process and the homogeneity of the final crushing effect of the crushing device, the cutters 2 should also be arranged as uniformly as possible in the circumferential direction of the rotor 1.
Thus, in some embodiments, the method of arranging a breaker knife further comprises: if the number of the cutters S 0 Is the number of spirals L n Integral multiple of (S) is determined by the number of cutting tools 0 Calculating the circumferential difference angle of two adjacent cutters 2 in the circumferential direction of the rotating body 1
And according to the difference angle of the circumferences
Determining the position of the tool 2 in the circumferential direction of the rotor 1; if the number of the cutters S 0 Not the number of spirals L n Integral multiple of (S), calculating the circumferential difference angle of two adjacent cutters 2 in the circumferential direction of the rotating body 1 according to the number of cutters S
And according to the difference angle of the circumferences
The position of the tool 2 in the circumferential direction of the rotor 1 is determined.
In some embodiments of the present invention, the,
the working of an embodiment of the method of arranging the cutters of the crushing device according to the invention is described below:
as shown in fig. 1a and 1b, a crushing device is provided, which comprises a rotor 1 and a plurality of cutters 2.
Fig. 5 shows the steps of tool arrangement using the arrangement method of the crushing device tool of the invention.
Firstly, relevant parameters are determined according to the working conditions of milling and crushing operation, and the actual milling thickness T of the cutter is calculated h . Determining milling depth H according to construction operation requirements, and setting basic structure parameters (milling width W) of the crushing device d Milling diameter D, etc.) the rotational speed n and the forward speed v of the crushing plant are determined from the host machine performance. Calculating the actual milling thickness T of the cutter according to the geometrical relationship among the parameters h ：
Wherein, the first and the second end of the pipe are connected with each other,
secondly, calculating the optimal cutter spacing T according to the milling collapse effect of the brittle engineering medium material 0 . The crushing device is generally used for crushing brittle engineering media, such as highway pavements, underground rocks, mountains and the like, determining a construction operation object and then according to the maximum effective collapse depth T of the corresponding engineering media material p And effective breakout angle beta in combination with the actual milling thickness of the tool 2 obtained as described aboveDegree T h Calculating the optimum tool pitch T 0 ：
T 0 ＝K t (T h ＜M)
Wherein, the value range of the first constant M is usually 3-5 mm, and the value range of the second constant N is usually 30-40 mm.
Then, according to the rule that the spiral lines are uniformly distributed in the circumferential direction of the rotor 1, calculating the circumferential angle Q occupied by a single spiral line:
L n *Q＝m*360°
wherein L is n Is usually from 2 to 4, m is an integer greater than 0.
Then, according to the rule that the cutters 2 are uniformly distributed in the axial direction of the rotor 1, the milling width W is adjusted d And the above-mentioned interval T 0 The ratio of (A) is rounded to determine the number S of the cutters of the crushing device 0 ：
S 0 ＝int(W d /T 0 )
If the number of the cutters S 0 Is the number of spirals L determined in the above step n Integer multiple of (1), then according to the pitch T 0 Determining the position of the tool 2 in the axial direction of the rotor 1;
if the number of the cutters S 0 Not of the number of spirals L determined in the above step n Is an integer multiple of S = L n *int(S 0 /L n ) And recalculating to obtain the number S of the corrected cutters, and then calculating to obtain the final cutter spacing T:
T＝W d /S
and the position of the tool 2 in the axial direction of the rotor 1 is determined on the basis of the pitch T.
Further, according to the criterion that the cutters 2 are uniformly distributed in the circumferential direction of the rotor 1, the circumferential difference angle between two adjacent cutters 2 is calculated:
or
Finally, the plurality of tools 2 are arranged according to the parameters obtained by the calculation.
As shown in fig. 6, the rotating body 1 is developed in the circumferential direction, the direction Z is the axial direction of the rotating body 1, and the direction θ is the circumferential direction of the rotating body 1. According to the principle of 'even arrangement in the circumferential direction, even arrangement in the axial direction', a plurality of cutters 2 are arranged in a spiral line form.
Wherein, the flow of arranging the cutter 2 on each spiral line is as follows: based on the number of spirals L n Equally dividing the rotor 1 in the circumferential direction, determining the circumferential position of the beginning of each helix → according to the distance T between two adjacent cutters 2 0 Or T, and combining the serial number of the spiral line, calculating the axial position Z of the jth cutter 2 on the ith spiral line j → according to the circumferential difference angle between two adjacent cutters 2
Or
And calculating the circumferential position theta of the jth cutter 2 on the ith spiral line by combining the serial numbers of the spiral lines j → according to (Z) j ，θ j ) Is arranged for each tool 2.
By way of illustration of several embodiments of the inventive method for arranging the cutters of a crushing plant, it can be seen that the inventive method for arranging the cutters of a crushing plant has at least the following advantages:
1. the arrangement method of the cutters of the crushing device comprises the process of correcting the number of the cutters and the cutter spacing, and can realize the adjustment of the cutter spacing according to different working conditions so as to obtain the optimal cutter spacing, rationalize the layout of the cutters and facilitate the production and processing of the crushing device;
2. the arrangement method of the cutters of the crushing device is based on working parameters of the crushing device such as milling depth, rotation speed and advancing speed, and the optimal cutter spacing is obtained by combining physical properties of engineering medium materials, so that the number of the cutters can be reduced under the condition of ensuring that materials between adjacent cutters have higher removal rate, the processing cost and the construction and maintenance cost of the crushing device are reduced, the waste of the power of a host is reduced, the customized design of the crushing device can be realized, the quick response of the customized requirements of customers of the crushing device is realized, and the problem of poor construction adaptability of the crushing device in the related technology is solved;
3. according to the arrangement method of the cutters of the crushing device, the plurality of cutters are arranged on the outer peripheral surface of the rotor along the spiral line based on the distance and the circumferential difference angle between the cutters, so that the uniform arrangement of the plurality of cutters in the circumferential direction and the axial direction of the rotor is realized, the problem of rapid and uniform arrangement of the cutters of the crushing devices with different widths can be solved, and the stability and uniformity of the construction operation process of the crushing device can be ensured.
Based on the arrangement method of the cutters of the crushing device, the invention also provides the crushing device, and the cutters of the crushing device are arranged by adopting the arrangement method of the cutters of the crushing device. The structure of the crushing device of the invention can be in various forms, and can be cylindrical as shown in fig. 1a and 1b, and can also be cylindrical and conical as shown in fig. 7; as shown in fig. 8, the movement mode of the crushing device in the milling and crushing process can be horizontal advance, vertical downward movement, transverse movement and the like, and the adjustment can be carried out according to actual construction requirements.
The positive technical effects of the arrangement method of the cutters of the crushing device in the above embodiments are also applicable to the crushing device, and are not described again here.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made without departing from the principles of the invention, and these modifications and equivalents are intended to be included within the scope of the claims.
Claims (10)
1. A method of arranging cutters of a crushing device, comprising:
providing a crushing device, wherein the crushing device comprises a rotating body (1) and a plurality of cutters (2) arranged on the outer peripheral surface of the rotating body (1), and the plurality of cutters (2) are arranged in a plurality of spiral lines;
determining the distance T between two adjacent cutters (2) in the axial direction of the rotating body (1) 0 ；
According to said distance T 0 Calculating the number S of the tools (2) 0 ；
Determining the number of spirals L n ；
Judging the number S of the cutters 0 Whether or not it is the number L of the spiral lines n Integer multiples of;
if yes, according to the distance T 0 Determining the position of the tool (2) in the axial direction of the rotor (1);
if not, according to the formula S = L n *int(S 0 /L n ) For the number S of the cutters 0 And correcting to obtain the number S of the cutters, calculating the distance T between every two adjacent cutters (2) in the axial direction of the rotating body (1) according to the number S of the cutters, and determining the positions of the cutters (2) in the axial direction of the rotating body (1) according to the distance T.
2. A method according to claim 1, characterized in that the distance T between two adjacent cutters (2) in the axial direction of the rotor (1) is determined 0 The operation of (1) comprises:
according to preset working parameters of the crushing deviceCalculating the actual milling thickness T of the crushing device h ；
If the actual milling thickness T h If the distance is less than the first constant M, the distance T is calculated according to a first formula 0 ；
If the actual milling thickness T h If the distance is greater than or equal to the first constant M and less than or equal to the second constant N, the distance T is calculated according to a second formula 0 ；
If the actual milling thickness T h If the distance is larger than the second constant N, the distance T is calculated according to a third formula 0 。
3. A method according to claim 2, characterized in that said distance T calculated according to said second formula 0 Is greater than the distance T calculated according to the first formula 0 Is smaller than the distance T calculated according to the third formula 0 The value of (c).
4. The method of claim 2, wherein the breaker knife is positioned in a predetermined position,
the first formula is T 0 ＝K t (ii) a And/or
The second formula is
And/or
The third formula is
Wherein, K t For the milling width, T, of the tool (2) p The maximum effective breakout depth of the milled material, beta is the effective breakout angle of the milled material, and A, B and C are constants.
5. The method of claim 2, wherein the predetermined operating parameters comprise rotationRotating speed n, advancing speed v, milling depth H and milling diameter D, and calculating actual milling thickness T of the crushing device according to preset working parameters of the crushing device h The operation of (1) comprises:
according to the formula
Calculating T h Wherein, in the step (A),
6. method according to claim 1, characterized in that the arrangement of the cutters of the crushing device is made according to the distance T 0 Calculating the number S of the tools (2) 0 The operation of (1) comprises:
according to the formula S 0 ＝int(W d /T 0 ) Calculating the number S of the cutters 0 Wherein W is d The milling width of the crushing device.
7. Method for arranging a cutter of a crushing plant according to claim 1, characterized in that the number of spirals L is determined n The operation of (1) comprises:
determining a phase angle Q which a single helix occupies in the circumferential direction of the rotor (1);
according to the formula L n * Q = m 360 ° determination of L n Wherein m is an integer greater than 0.
8. The method of claim 1, further comprising:
if the number of the cutters S 0 Is the number L of said spirals n Integral multiple of S, according to the number S of the cutters 0 Calculating the circumferential difference angle of two adjacent cutters (2) in the circumferential direction of the rotating body (1)
And according toSaid difference angle of circumference
Determining the position of the tool (2) in the circumferential direction of the rotor (1);
if the number of the cutters S 0 Not the number of spirals L n The integral multiple of the number of the cutters is calculated according to the number S of the cutters, and the circumferential difference angle of two adjacent cutters (2) in the circumferential direction of the rotating body (1) is calculated
And according to said circumferential difference angle
The position of the tool (2) in the circumferential direction of the rotor (1) is determined.
9. The method of claim 8, wherein the breaker knife is moved from the first position to the second position,
10. a crushing plant characterized in that the cutters of the crushing plant are arranged using the method of arranging the cutters of the crushing plant according to any one of claims 1 to 9.
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