Lining Plate of Multi-Gradient Structure-Reinforced Cone Crusher and Design Method Thereof

Abstract

The present disclosure discloses a multi-gradient structure-reinforced cone crusher and a design method of a lining plate thereof. The multi-gradient structure-reinforced cone crusher includes a movable cone and a fixed cone arranged around the movable cone, and a crushing cavity formed in the radial space between the fixed cone and the movable cone, the surfaces of the fixed cone and the movable cone that are opposite to each other are respectively provided with a fixed cone lining plate and a movable cone lining plate, the working faces of the fixed cone lining plate and the movable cone lining plate that face the crushing cavity are provided with multiple sets of cast-in alloy, which are different in at least one of distribution density, maximum size of exposed surface and shape of the cast-in alloy in a direction from the feed port to the discharge port.

Claims

1. A multi-gradient structure-reinforced cone crusher, comprising a movable cone and a fixed cone arranged around the movable cone, with a crushing cavity formed in the radial space between the fixed cone and the movable cone, wherein the surfaces of the fixed cone and the movable cone that are opposite to each other are respectively provided with a fixed cone lining plate and a movable cone lining plate, the working faces of the fixed cone lining plate and the movable cone lining plate that face the crushing cavity are provided with multiple sets of cast-in alloy, which are different in at least one of distribution density, maximum size of exposed surface and shape of the cast-in alloy in a direction from the feed port to the discharge port.

2. The multi-gradient structure-reinforced cone crusher of claim 1, wherein the working faces of the fixed cone lining plate and the movable cone lining plate are stepped curve surfaces surrounding the rotating axis of the movable cone respectively, and the generatrix of the stepped curve surface comprises a plurality of broken line segments, so that the crushing cavity is formed into multiple levels of sub-crushing cavities.

3. The multi-gradient structure-reinforced cone crusher of claim 2, wherein the multiple levels of sub-crushing cavities comprise an upper sub-crushing cavity, a middle sub-crushing cavity and a lower sub-crushing cavity; wherein the generatrices of the conical surfaces of the fixed cone lining plate and the movable cone lining plate corresponding to the upper sub-crushing cavity form an engagement angle .sub.3, the generatrices of the conical surfaces of the fixed cone lining plate and the movable cone lining plate corresponding to the middle sub-crushing cavity form an engagement angle .sub.2, and the generatrices of the conical surfaces of the fixed cone lining plate and the movable cone lining plate corresponding to the lower sub-crushing cavity form an engagement angle .sub.1, and .sub.2>.sub.3>.sub.1.

4. The multi-gradient structure-reinforced cone crusher of claim 3, wherein .sub.1=0.5.sub.30.8.sub.3, and .sub.2=0.8.sub.31.5.sub.3.

5. The multi-gradient structure-reinforced cone crusher of claim 3, wherein the portion of the crushing cavity near the discharge port forms a parallel sub-crushing cavity, and the working faces of the fixed cone lining plate and the movable cone lining plate opposite to each other in the region of the parallel sub-crushing cavity have generatrices parallel to each other.

6. The multi-gradient structure-reinforced cone crusher of claim 5, wherein the cast-in alloy of the upper sub-crushing cavity has an elliptical or rectangular cross section that has a length-width ratio of 3:15:1, and the length of the cross section is not greater than 50 mm; and/or, the cast-in alloy of the middle sub-crushing cavity has a circular cross section in diameter not greater than 40 mm, or has an elliptical cross section that has a length-width ratio of 3:14:1, and the length of the cross section is not greater than 40 mm; and/or, the cast-in alloy of the lower sub-crushing cavity has a circular cross section in diameter not greater than 30 mm; and/or, the cast-in alloy of the parallel sub-crushing cavity has a circular cross section in diameter not greater than 20 mm.

7. A lining plate of multi-gradient structure-reinforced cone crusher, wherein the working face of the lining plate of multi-gradient structure-reinforced cone crusher is provided with multiple sets of cast-in alloy, which are different in at least one of distribution density, maximum size of exposed surface, and shape of the cast-in alloy.

8. A design method of a lining plate of multi-gradient structure-reinforced cone crusher, comprising: S1. establishing a geometric model of crushing cavity, a material crushing function and a material particle model, and simulating the material crushing process, to ascertain the difference in size-grade distribution and/or a characteristic wear curve of the lining plate in the material crushing process; S2. arranging multiple sets of cast-in alloy that are different in at least one of distribution density, maximum size of exposed surface, and shape of the cast-in alloy on the working face of the lining plate, according to the difference in size-grade distribution and/or the characteristic wear curve of the lining plate.

9. The design method of a lining plate of multi-gradient structure-reinforced cone crusher of claim 8, wherein in the step S2, the working face of the lining plate is divided into a plurality of regions corresponding to an upper sub-crushing cavity, a middle sub-crushing cavity and a lower sub-crushing cavity respectively, according to the difference in size-grade distribution and/or the characteristic wear curve of the lining plate, and the step S2 comprises the following sub-steps: S21. setting a maximum engagement angle .sub.max according to the properties, size grade before crushing and size grade after crushing of the material; S22. determining corresponding maximum filling density .sub.max respectively according to the working condition of coarse crushing, medium crushing, and fine crushing; S23. configuring the engagement angle .sub.j of the respective sub-crushing cavity so that it is not greater than the maximum engagement angle .sub.max, and configuring the engagement angles .sub.3, .sub.2, .sub.1 of the upper sub-crushing cavity, the middle sub-crushing cavity, and the lower sub-crushing cavity to meet .sub.2>.sub.3>.sub.1.

10. The design method of a lining plate of multi-gradient structure-reinforced cone crusher of claim 8, wherein in the step S1, the difference in size-grade distribution in the material crushing process is ascertained through the following sub-steps: setting the working parameters of the movable cone, and simulating the material crushing process by means of ADAMS and EDEM coupling, to find out the size-grade distribution of the material in the height direction in the crushing cavity.

Description

BRIEF DESCRIPTION OF DRAWINGS

[0064] FIG. 1 is a schematic structural diagram of the lining plate of multi-gradient structure-reinforced cone crusher;

[0065] FIG. 2 is shows the shape and layout of crushing cavity cast-in alloy in different regions in the present disclosure.

REFERENCE NUMBERS

[0066] 1fixed cone lining plate; 2movable cone lining plate; 31upper sub-crushing cavity; 32middle sub-crushing cavity; 33lower sub-crushing cavity; 4parallel sub-crushing cavity; 5cast-in alloy of upper sub-crushing cavity; 6cast-in alloy of middle sub-crushing cavity; 7cast-in alloy of lower sub-crushing cavity; 8cast-in alloy of parallel sub-crushing cavity.

DETAILED DESCRIPTION OF THE EMBODIMENTS

[0067] Hereunder some embodiments of the present disclosure will be detailed with reference to the accompanying drawings. It should be understood that the embodiments described here are only provided to describe and explain the present disclosure rather than constitute any limitation to the present disclosure.

[0068] In the present disclosure, unless otherwise specified, the terms that denote the orientations are used as follows, for example: top, bottom, left and right usually refer to top, bottom, left and right as shown in the accompanying drawings; inside and outside refer to inside and outside in relation to the profiles of the components.

[0069] As shown in FIGS. 1 and 2, in a first aspect, the present disclosure provides a multi-gradient structure-reinforced cone crusher, which comprises a movable cone and a fixed cone arranged around the movable cone, and a crushing cavity formed in the radial space between the fixed cone and the movable cone, wherein the surfaces of the fixed cone and the movable cone that are opposite to each other are respectively provided with a fixed cone lining plate 1 and a movable cone lining plate 2, the working faces of the fixed cone lining plate 1 and the movable cone lining plate 2 that face the crushing cavity are provided with multiple sets of cast-in alloy, which are different in at least one of distribution density, maximum size of exposed surface and shape of cast-in alloy in a direction from the feed port to the discharge port.

[0070] The working faces of the fixed cone lining plate 1 and the movable cone lining plate 2 are stepped curve surfaces surrounding the rotating axis of the movable cone respectively, and the generatrix of the stepped curve surface comprises a plurality of broken line segments, so that the crushing cavity is formed into multiple levels of sub-crushing cavities, including an upper sub-crushing cavity 31, a middle sub-crushing cavity 32, and a lower sub-crushing cavity 33.

[0071] Wherein the generatrices of the conical surfaces of the fixed cone lining plate 1 and the movable cone lining plate 2 corresponding to the upper sub-crushing cavity 31 form an engagement angle .sub.3, the generatrices of the conical surfaces of the fixed cone lining plate 1 and the movable cone lining plate 2 corresponding to the middle sub-crushing cavity 32 form an engagement angle .sub.2, and the generatrices of the conical surfaces of the fixed cone lining plate 1 and the movable cone lining plate 2 corresponding to the lower sub-crushing cavity 33 form an engagement angle .sub.1, and .sub.2>.sub.3>.sub.1.

[0072] According to a preferred embodiment of the present disclosure, .sub.1=0.5.sub.30.8.sub.3, and .sub.2=0.8.sub.31.5.sub.3, the portion of the crushing cavity near the discharge port forms a parallel sub-crushing cavity 4, and the working faces of the fixed cone lining plate 1 and the movable cone lining plate 2 opposite to each other in the region of the parallel sub-crushing cavity 4 have generatrices parallel to each other.

[0073] Particularly, the working face of the lining plate of cone crusher is provided with multiple sets of cast-in alloy, which are different in at least one of distribution density, maximum size of exposed surface, and shape of cast-in alloy.

[0074] Wherein the cast-in alloy of the upper sub-crushing cavity 5 has an elliptical or rectangular cross section that has a length-width ratio of 3:15:1, and the length of the cross section is not greater than 50 mm; and/or the cast-in alloy of the middle sub-crushing cavity 6 has a circular cross section in diameter not greater than 40mm, or has an elliptical cross section that has a length-width ratio of 3:14:1, and the length of the cross section is not greater than 40 mm; and/or the cast-in alloy of the lower sub-crushing cavity 7 has a circular cross section in diameter not greater than 30 mm; and/or the cast-in alloy of the parallel sub-crushing cavity 8 has a circular cross section in diameter not greater than 20 mm.

[0075] As shown in FIGS. 1 and 2, in a second aspect, the present disclosure provides a design method of the above-mentioned lining plate of multi-gradient structure-reinforced cone crusher, wherein the structures of the sub-crushing cavities are designed according to the variation of the particle size of the material in the crushing process and the layered crushing conditions.

[0076] According to a preferred embodiment of the present disclosure, the upper sub-crushing cavity 31, the middle sub-crushing cavity 32, and the lower-sub crushing cavity 33 are designed through the following steps:

[0077] 1) For metallic minerals with high hardness and toughness, the ratio of size reduction of the medium (or fine) cone crusher is set to 35, the crushing cavity is in an linear shape, and the maximum engagement angle is set to .sub.max25;

[0078] 2) The maximum filling density in upper sub-crushing cavity 31 and the middle sub-crushing cavity 32 is set to .sub.max=0.650.8; the maximum filling density in the lower sub-crushing cavity 33 is set to .sub.max=0.750.9;

[0079] 3) The engagement angle of the upper sub-crushing cavity 31 is set to .sub.3=17, the engagement angle of the middle sub-crushing cavity 32 is set to .sub.2=0.71.sub.3, then .sub.2=24; the engagement angle of the lower sub-crushing cavity 33 is set to .sub.1=0.5.sub.3, then .sub.1=12;

[0080] In a preferred embodiment of the present disclosure, the amount of wear of the fixed cone lining plate 1 and the movable cone lining plate 2 is calculated and analyzed through the following steps:

[0081] 1) the amount of wear of the fixed cone lining plate 1 and the movable cone lining plate 2 corresponding to the cross section j of the crushing cavity at wearing time t is:

[00001]${}_j=c.Math.n.Math.\underset{0}{\overset{\mathrm{.Math.}}{}}.Math.{}_j\left(\mathrm{.Math.}\right).Math.d.Math.\mathrm{.Math.}$

[0082] Wherein, relative deformation of the material; .sub.j()surface load of the corresponding lining plate at the position of the cross section j of the crushing cavity, depending on the properties and relative deformation of the material to be crushed; nswing frequency of the crushing cone; ca scale coefficient related with the physical and mechanical properties of the material to be crushed and the lining plate; ttime of wearing.

[0083] 2) The deformation of the squeezed material in initial thickness of h in the crushing process is:

[00002]$\{\begin{array}{c}\mathrm{.Math.}={\mathrm{.Math.}}_0\left[\cos \left(-{}_s\right)\right]\\ {\mathrm{.Math.}}_0=\frac{{}_0}{h}.Math.g.Math.\frac{z_j.Math.\sin .Math.+r_j.Math.\cos .Math.}{\cos .Math.{}_{}}\end{array}$

[0084] Wherein, .sub.0nutation angle of the crushing cone; deformation phase angle; .sub.sdeformation phase angle when the material is clamped; r.sub.j, z.sub.jradius and height of the cross section of calculation; included angle of the cross section of calculation in the horizontal direction with respect to the crushing cone; .sub.engagement angle; .sub.0initial deformation of the material layer.

[0085] 3) The stress-strain relationship of the squeezed material in the crushing process is:

[00003]$\left(\mathrm{.Math.}\right)=E.Math.\frac{1-}{-\mathrm{.Math.}}.Math.\mathrm{.Math.}$

[0086] Wherein, ()surface load on the material; loose coefficient of material; .sub.0initial deformation resistance; Eelasticity modulus.

[0087] The amount of wear of the fixed cone lining plate 1 and the movable cone lining plate 2 may be expressed as:

[00004]$=c.Math.t.Math.n.Math.D_0\left(1-\right).Math.{\mathrm{.Math.}}_0^2.Math.\underset{0}{\overset{{}_s}{}}.Math.\frac{\cos .Math.-\cos .Math.{}_s}{-{\mathrm{.Math.}}_0\left(\cos .Math.-\cos .Math.{}_s\right)}.Math.\sin .Math..Math.d.Math.$

[0088] The characteristic wear curves of the fixed cone lining plate 1 and the movable cone lining plate 2 can be obtained according to the above amount of wear.

[0089] Specifically, the size-grade distribution of the material in the crushing cavity structure is simulated and analyzed on the basis of multi-rigid body dynamics and granular medium mechanics through the following steps:

[0090] 1) A three-dimensional geometric model of the crushing cavity structure is established according to the geometric structural parameters of the crushing cavity structure;

[0091] 2) A crushing function and a particle model of the material are established according to the particle size distribution before and after crushing;

[0092] 3) A material crushing model is established by means of ADAMS and EDEM coupling;

[0093] 4) The material crushing process is simulated with the working parameters of the movable cone and the material crushing function, to find out the size-grade distribution of the material in the crushing cavity at different height positions.

[0094] As shown in FIG. 2, the distribution density of the cast-in alloy of the upper sub-crushing cavity 5, the cast-in alloy of the middle sub-crushing cavity 6, the cast-in alloy of the lower sub-crushing cavity 7, and the cast-in alloy of the parallel sub-crushing cavity 8 are designed with the following method:

[0095] 1) The spacing between the sets of cast-in alloy of the upper sub-crushing cavity 5 is 11.5 times of the average particle diameter of the material in the region of the crushing cavity;

[0096] 2) The spacing between the sets of cast-in alloy of the middle sub-crushing cavity 6 is 11.5 times of the average particle diameter of the material in the region of the crushing cavity;

[0097] 3) The spacing between the sets of cast-in alloy of the lower sub-crushing cavity 7 is 11.5 times of the average particle diameter of the material in the region of the crushing cavity;

[0098] 4) The spacing between the sets of cast-in alloy of the parallel sub-crushing cavity 8 is 11.5 times of the average particle diameter of the crushed material.

[0099] Wherein the cross-sectional shapes and dimensions of the cast-in alloy of the upper sub-crushing cavity 5, the cast-in alloy of the middle sub-crushing cavity 6, the cast-in alloy of the lower sub-crushing cavity 7, and the cast-in alloy of the parallel sub-crushing cavity 8 are designed with the following method:

[0100] 1) The length of the cast-in alloy of the upper sub-crushing cavity 5 is not greater than 50 mm, the length-width ratio is (35):1, and the cross-section is in an elliptical or rectangular shape;

[0101] 2) The cross section of the cast-in alloy of the middle sub-crushing cavity 6 is a circular cross section in diameter not greater than 40 mm, and/or is an elliptical cross section in length not greater than 40 mm with a length-width ratio of (34):1;

[0102] 3) The cross section of the cast-in alloy of the lower sub-crushing cavity 7 is a circular cross section in diameter not greater than 30 mm;

[0103] 4) The cross section of the cast-in alloy of the parallel sub-crushing cavity 8 is a circular cross section in diameter not greater than 20 mm.

[0104] Some embodiments of the present disclosure are described above in detail with reference to the accompanying drawings, only for the purpose of explaining the technical scheme and technical features of the present disclosure and enabling those skilled in the art to understand the content of the present disclosure and the implementation. However, the embodiments of the present disclosure are not limited to the details in the embodiments described above. Various simple variations and modifications may be made to the technical schemes in the embodiments of the present disclosure within the scope of the technical ideal of the embodiments of the present disclosure, but all of those simple variations and modifications should be deemed as falling in the protection scope of the embodiments of the present disclosure. Various possible combinations of the embodiments of the present disclosure are not enumerated or detailed here to avoid unnecessary repetition.