CN112282754B - Tooth holder and tooth boot system - Google Patents

Tooth holder and tooth boot system Download PDF

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Publication number
CN112282754B
CN112282754B CN202011179211.8A CN202011179211A CN112282754B CN 112282754 B CN112282754 B CN 112282754B CN 202011179211 A CN202011179211 A CN 202011179211A CN 112282754 B CN112282754 B CN 112282754B
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Prior art keywords
tooth
shoe
section
holder
straight line
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CN112282754A (en
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郝山林
王晋级
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Xuzhou Zhongkuang Huihong Mining Equipment Co ltd
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Xuzhou Zhongkuang Huihong Mining Equipment Co ltd
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Publication of CN112282754A publication Critical patent/CN112282754A/en
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
    • E21C35/18—Mining picks; Holders therefor
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
    • E21C35/18—Mining picks; Holders therefor
    • E21C35/19—Means for fixing picks or holders
    • E21C35/197—Means for fixing picks or holders using sleeves, rings or the like, as main fixing elements

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Abstract

The invention relates to a novel tooth holder and tooth shoe system, which comprises: the tooth base and the tooth boot, be provided with the hole on the tooth base, the partial nestification of tooth base is in the tooth boot, the link and the tooth boot of tooth base are connected, the tooth boot includes straightway and parcel section, the parcel section does the shoulder of tooth boot for the protection nestification is in the tooth base in the tooth boot, the straightway does the stalk portion of tooth boot, be used for with the tooth base with tooth boot fixed connection, the straightway with parcel section integrated into one piece, the tooth boot cover is established on the pick stalk portion. The part of the mounting end of the tooth holder, which is nested into the tooth shoe, is conical, and the shoulder part of the tooth shoe is provided with a conical structure with the same taper as that of the mounting end of the tooth holder, so that the mounting end of the tooth holder is protected in all directions, and the service life of the tooth holder is prolonged.

Description

Tooth holder and tooth boot system
Technical Field
The invention relates to the technical field of cutting part protection, in particular to a tooth holder and tooth shoe system.
Background
In cutting parts of mining and construction machinery, a tooth holder (also called a tool apron) is usually welded on the cutting part, so that the tooth holder is not easy to replace, and a tooth shoe (also called a tooth sleeve or a tool sleeve) is inserted into the tooth holder and is a replaceable part. Designers desire that the life of the tooth holder be as long as possible. The following figure is a common tooth holder and tooth shoe system.
In the existing tooth holder and tooth shoe system, the outer surface of the tooth holder is not protected by the tooth shoe, so the outer surface can be abraded. In addition, the upper surface of the tooth base and the inner hole of the tooth base are abraded by the rotating tooth shoe and the tooth shoe prevented from rotating by the limiting block. Wear of the outer surface, upper surface, inner bore of the block can lead to failure of the block and thus failure of the cutting components (drum, cutting head, etc.).
In conclusion, the tooth shoe in the prior art is difficult to protect the outer surface, the upper surface and the inner hole of the tooth holder from being worn, and further causes the tooth holder to fail.
Disclosure of Invention
Therefore, the invention provides a tooth holder and tooth shoe system which is used for overcoming the problem that the tooth holder fails due to abrasion of the outer surface, the upper surface and the inner hole of the tooth holder in the prior art.
To achieve the above object, the present invention provides a tooth holder and tooth shoe system comprising: a tooth holder and a tooth shoe, wherein,
the tooth shoe is sleeved on the tooth holder, the tooth holder comprises a mounting end and a connecting end, the tooth shoe comprises a straight line section and a wrapping section, the connecting end of the tooth holder is connected with the straight line section of the tooth shoe, the mounting end of the tooth holder is nested in the wrapping section of the tooth shoe, the straight line section is a handle part of the tooth shoe and used for fixedly connecting the tooth holder with the tooth shoe, the wrapping section is a shoulder part of the tooth shoe and used for protecting the tooth holder nested in the tooth shoe, the straight line section and the wrapping section are integrally formed, the tooth shoe is sleeved on the handle part of the tooth holder, a gap is formed between an inner hole on one side of the tooth holder close to the roller and the tooth shoe, and the mounting end on one side of the tooth holder far away from the roller is connected with the tooth shoe;
the starting point of the contact position of the straight line section of the tooth shoe and the tooth holder is A, the wrapping section comprises a first arc section, a first straight line section, a second arc section and a second straight line section, wherein the contact point of one end of the first arc section and the other end of the straight line section is B, the contact point of the other end of the first arc section and one end of the first straight line section is C, the contact point of the other end of the first straight line section and one end of the second arc section is D, the connection point of the other end of the second arc section and one end of the second straight line section is E, the contact point of the other end of the second straight line section and one side of the tooth holder far away from the tooth holder is F, the sections of the first arc section and the second arc section are both arc-shaped, and the sections of the first straight line section and the second straight line section are straight lines;
in the process of cutting coal or rock by the cutting pick, the shoulder part of the shank of the cutting pick applies axial force to the tooth shoe, the tooth shoe generates axial leftward thrust to the tooth holder, the shank of the tooth shoe is fixedly connected with the tooth holder and generates axial rightward thrust to the tooth holder, meanwhile, the tooth shoe generates radial force to the tooth holder, extrusion stress is generated between the linear section of the tooth shoe and the end surface of the tooth holder and the surface of the shank of the cutting pick, a longer linear section is set to realize buffering of the force, a wrapping section is set to be a structure of a first arc section, a first straight section, a second arc section and a second linear section, when the tooth shoe is stressed, the first arc section and the second arc section are combined into an arc structure through the first linear section, the second conical surface is set to wrap the tooth holder to form a cone structure, and the wrapping section of the tooth shoe is subjected to abrasion during movement, and bear and transmit the stress generated when the cutting tooth moves, so that the acting force is matched with the conical surface of the tooth base by the tooth shoe, and the tooth base is protected by using the conduction force.
Further, the pick shank includes a first pick shank and a second pick shank, the first pick shank having a radius greater than a radius of the second pick shank, the first pick shank having a length less than a length of the second pick shank;
the tooth holder is characterized in that an original point O is arranged at the leftmost end of the second cutting tooth handle in the transverse direction and at the central position in the longitudinal direction, an x axis is arranged at the position of the original point O in the horizontal direction of the transverse center line of the first cutting tooth handle, a y axis is arranged at the original point O in the vertical direction of the tooth shoe, a coordinate axis Oxy is established, in a first quadrant of the coordinate axis Oxy, a conical surface matched stress is formed between the mounting end of the tooth holder and the tooth shoe, the conical surface matched stress can be a conical surface or a pyramidal surface, and in a fourth quadrant of the coordinate axis Oxy, a gap is formed between the tooth holder and the tooth shoe.
Further, in the first quadrant of the coordinate axis Oxy, the cross-sectional straight shape between the contact point A and the contact point B of the tooth shoe close to the direction of the tooth holder is,
Y1= D1+D3
where D1 represents the radius of the second pick shank and D3 represents the thickness of the shoe where it contacts the second pick shank;
the length of a section straight line between a straight line contact point A and a straight line contact point B of the tooth boot is,
G1= L1+1/2×L2
where L1 represents the length of the second pick shank and L2 represents the length of the first pick shank.
Further, in a first quadrant of a coordinate axis Oxy, the section curve formula of a first arc-shaped section BC of a contact part of the installation end of the tooth shoe and the tooth holder close to one side of the cutting pick handle is as follows,
Y2＝L1+(D1+D3)×tan(a+D1/L1+D2/L2)
where L1 represents the length of the second pick shank, D1 represents the radius of the second pick shank, D3 represents the thickness of the shoe where it contacts the second pick shank, a represents the angle between the line and the horizontal plane made up of the two ends of the first segment, D2 represents the radius of the first pick shank, and L2 represents the length of the first pick shank.
Further, in a first quadrant of the coordinate axis Oxy, the cross-sectional straight length of a contact portion of a first straight line segment CD of the tooth shoe and the tooth holder mounting end is,
Y3= (D4- D3）/5
where D3 represents the shoe thickness at the point where the shoe contacts the second pick shank and D4 represents the thickness of the wrap section.
Further, in the first quadrant of the coordinate axis Oxy, the cross-sectional curve formula of the second arc section DE of the contact part between the port of the side of the tooth seat mounting end far away from the cutting pick shank and the inner side of the shoulder part of the tooth shoe is as follows,
Y4=cos[(b+D2+D4-D1-D3-D5)-sinY2]
wherein D1 represents the radius of the second pick shank, D3 represents the thickness of the shoe at the location where the shoe contacts the second pick shank, D2 represents the radius of the first pick shank, D4 represents the thickness of the wrapping section, D5 represents the thickness of the shoe at the location of the side of the block mounting end remote from the pick shank and the end of the second linear section remote from the second arcuate section, and b is the angle between the horizontal and the line made up of the two end points of the second arcuate section.
Further, in the first quadrant of the coordinate axis Oxy, the cross-sectional rectilinear shape of the second rectilinear segment EF is represented by,
Y5=（D4/L2）×x –L1/L2×D4 +1/3×D4
wherein L1 represents the length of the second pick shank, L2 represents the length of the first pick shank, D4 represents the thickness of the wrapped section;
the cross-sectional straight-line length of the second straight-line segment is expressed as,
G2=D4/2+L2/8
where D4 represents the thickness of the wrapped section and L2 represents the length of the first pick shank.
Further, in the fourth quadrant of the coordinate axis Oxy, the straight line segment of the tooth shoe is A1 B1The section wrapping section comprises a first arc-shaped section B1C1A first straight line segment C1D1A second arc segment D1E1And a second straight line segment E1F1A gap is arranged between the tooth base and the tooth shoe, and the transverse gap is expressed as,
Q1 = (Fon the upper part- FLower part)/ FOn the upper part+D3/D4
The longitudinal gap is shown as being,
Q2 = (Fleft side of- FRight side)/ FLeft side of
Wherein the axial pressure on the tooth holder is represented by FLeft side ofAnd FRight sideThe pressure in the longitudinal direction is denoted FOn the upper partAnd FLower part。
Further, in the fourth quadrant of the coordinate axis Oxy, the straight line segment a of the tooth shoe1 B1A longitudinal gap is arranged between the tooth shoe and the tooth holder, and the tooth shoe is close to a straight line section A in the direction of the tooth holder1 B1The cross-sectional straight line shape between the two is,
Y 11= -（D1+D3）-Q2
where D1 represents the radius of the second pick shank, D3 represents the thickness of the shoe where it contacts the second pick shank, and Q2 represents the longitudinal gap between the block and the shoe;
straight line segment A of the tooth boot1 B1The length of the cross-sectional straight line therebetween is,
G 11= L1+1/2×L2
wherein L1 represents the length of the second pick shank and L2 represents the length of the first pick shank;
a first arc segment B of the tooth shoe1C1The formula of the cross-sectional curve of (A) is,
Y 12=L1+(D1+D3)×tan(-a+D1/L1+D2/L2+Q1)
where a denotes the angle between the line of the two end points of the first arcuate segment and the horizontal, D2 denotes the radius of the first pick shank, Q1 denotes the transverse clearance between the block and the shoe;
a first straight line segment C of the tooth shoe1D1The length of the straight line of the cross section of the steel plate is,
Y 13= (D4- D3）/5
where D3 represents the shoe thickness at the point where the shoe contacts the second pick shank, and D4 represents the thickness of the wrapped section;
a second arc segment D of the tooth shoe1E1The formula of the cross-sectional curve of (A) is,
Y 14=cos[(-b+D2+D4-D1-D3-D5+q1)-sinY2]
wherein b represents the included angle between a straight line formed by two end points of the second arc-shaped section and a horizontal plane, and Q1 represents the transverse gap between the tooth holder and the tooth shoe;
second straight line segment E of the tooth shoe1F1The cross-sectional straight line shape of (a) is expressed as,
Y 15=-（D4/L2）×x –L1/L2×D4 +1/3×D4 –Q1
the cross-sectional straight-line length of the second straight-line segment is expressed as,
G15=D4/2+L2/8
where x represents a constant in the x-axis direction and Q1 represents the lateral clearance between the tooth holder and the tooth shoe.
Furthermore, a snap ring is arranged at one end, far away from the wrapping section, of the straight section of the tooth shoe and connected with the connecting end of the tooth holder so as to fixedly connect the tooth holder with the tooth shoe, the wrapping section on the tooth shoe can be complete or segmented on the circumference, the wrapping section on the tooth shoe can transmit force by using a conical surface or a step, and the tooth shoe is replaceable.
Compared with the prior art, the invention has the advantages that the tooth holder and the tooth shoe system are provided, the tooth holder is better protected by improving the structure of the tooth shoe, the tooth holder is partially nested in the tooth shoe, the tooth shoe comprises a straight line section and a wrapping section, the wrapping section is a shoulder part of the tooth shoe and is used for protecting the tooth holder nested in the tooth shoe, the straight line section is a handle part of the tooth shoe, the straight line section and the wrapping section are integrally formed, the wrapping section comprises a first arc section, a first straight line section, a second arc section and a second straight line section, the first arc section, the first straight line section and the second arc section are connected with a port of a mounting end of the tooth holder, and the part of one side of the tooth holder far away from the handle part is embedded in the wrapping section through the second straight line section, the mounting end of the tooth holder is protected in all directions, so that the service life of the tooth holder is prolonged.
Especially, the part that the installation end nestification of toothholder advanced the toothholder boots sets up to conical, the toothholder boots shoulder be provided with the conical structure that toothholder installation end taper is unanimous, the installation end nestification of keeping away from the cylinder of toothholder is in the parcel section of toothholder boots, the installation end of keeping away from the toothholder of cylinder direction with for interference conical surface cooperation between the parcel section, through interference conical surface complex connected mode, make the toothholder keep away from the installation end of cylinder direction with there is not the clearance between the toothholder boots, make the toothholder installation end atress of keeping away from the cylinder direction even, extension the life of toothholder. Meanwhile, a gap is formed between the tooth holder inner hole close to the roller direction and the tooth shoe, and the tooth holder inner hole close to the roller direction is protected.
In particular, the protection of the tooth shoe on the tooth holder is maximized by combining the length of the straight line section with the length of the pick handle, the structure of the first arc section combines the length and the radius of the first pick handle and the radius of the second pick handle, combines the pick handle diameter ratio with the length of the first arc section, combines the length of the second straight line section and the first pick handle with the thickness of the wrapping section of the tooth shoe in a certain proportion, and finally determines the proportional relation between the second arc section and the first arc section and the second straight line section, thereby determining the first arc section, the second arc section and the second arc section, The specific curve shapes of the second arc-shaped section and the second straight-line section enable the stress of the tooth holder to change along with the change of the curves of the first arc-shaped section, the second arc-shaped section and the second straight-line section, so that the overall stress of the tooth shoe is balanced, the protection force of the tooth shoe on the tooth holder can be maximized, the protection force of the tooth shoe on the tooth holder is maximized, and the service life of the tooth holder is prolonged.
Furthermore, the mounting end of the tooth holder is connected with the wrapping section of the tooth shoe in a nested manner, the connecting end of the tooth holder is connected with the linear section of the tooth shoe, specifically, a clamping ring is arranged at one end, far away from the wrapping section, of the linear section of the tooth shoe and is connected with the connecting end of the tooth holder, on one hand, the tooth holder is fixed on the tooth shoe, on the other hand, in order to avoid the tooth shoe from shifting towards the cutting pick handle part on the tooth holder in the motion process, the tooth shoe is fastened with the tooth holder through the clamping ring, in addition, the connection relationship between the tooth shoe and the tooth holder is a detachable connection, and the detachment process is convenient.
Furthermore, the mounting end of the tooth holder is nested into the wrapping section of the tooth shoe, the wrapping section of the tooth shoe protects the mounting end of the tooth holder, and when the tooth holder is subjected to external force, the mounting end of the tooth holder far away from the roller bears most of the external force of the tooth holder, so that the mounting end of the tooth holder is protected by the tooth shoe with greater strength, and the service life of the tooth holder is prolonged.
Drawings
FIG. 1 is a schematic structural view of a tooth shoe system of a tooth holder according to an embodiment of the present invention;
FIG. 2 is a schematic view of the contact position of a tooth holder and tooth shoe in a tooth holder and tooth shoe system according to the embodiment of the present invention;
FIG. 3 is a schematic illustration of the tooth holder and tooth shoe dimensional indicia of the tooth holder and tooth shoe system of the embodiment of the present invention;
FIG. 4 is a schematic angle-marking view of the first and second arcuate segments of the tooth shoe system of the present invention in accordance with the illustrated embodiment of the invention.
Detailed Description
In order that the objects and advantages of the invention will be more clearly understood, the invention is further described below with reference to examples; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and do not limit the scope of the present invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1, the present invention provides a tooth holder and tooth shoe system, comprising: toothholder 1 and tooth boots 2, toothholder 1 through snap ring and nested mode with tooth boots 2 are connected, tooth boots 2 keep away from the cylinder one side internal surface with the surface contact of toothholder 1, tooth boots 2 be close to the cylinder the opposite side with be provided with the clearance between the toothholder, through toothholder 1 bears pressure with one side that tooth boots 2 are connected, and the protection is provided with gapped opposite side toothholder 1 and does not receive the force, thereby reduces toothholder 1's wearing and tearing, wherein, toothholder 1 welds on the cylinder.
Specifically, in the embodiment of the present invention, an inner hole (not shown in the drawings) is provided in the block 1, the inner hole is used to connect the block 1 with a cutting pick, the cutting pick is a tool for cutting rock, the inner hole may be a step hole or a straight hole, and the block 1 is connected with the shank 3 of the cutting pick through the inner hole.
Specifically, in the embodiment of the present invention, the tooth shoe 2 is sleeved outside the tooth base 1, the tooth base 1 may be partially nested in the tooth shoe 2, or may be completely nested in the tooth shoe 2, and the tooth shoe 2 covers the entire outside of the tooth base 1, or the tooth shoe 2 covers the circumference of the tooth base 1 in a segmented manner, and the tooth base 1 is protected by the action of a conductive force through the conical surface fit of the nested parts of the tooth base 1 and the tooth shoe 2, wherein the conical surfaces of the nested parts of the tooth base 1 and the tooth shoe 2 may be conical surfaces or pyramidal surfaces, and the tooth base 1 is covered by the tooth shoe 2, so that the structure that the tooth base 1 is protected by the conical surface fit between the tooth shoe 2 and the tooth base 1 should be included in the protection scope of the present invention.
Specifically, in the embodiment of the present invention, the wrapping section on the tooth shoe 2 may be complete or segmented on the circumference, the wrapping section on the tooth shoe 2 may transmit force by using a conical surface or may transmit force by using a step, and the tooth shoe is replaceable.
Specifically, the embodiment of the invention partially nests the tooth holder 1 in the tooth shoe 2, and the connecting end of the tooth holder 1 is connected with the tooth shoe 2, so that the tooth holder 1 is reduced in abrasion to the tooth holder 1 during operation.
Specifically, in the embodiment of the invention, the connecting end of the tooth holder 1 is connected with the shank of the tooth shoe 2 through a snap ring, the mounting end of the tooth holder 1 is nested in the shoulder of the tooth shoe 2, the shoulder of the tooth shoe 2 is provided with an opening, the mounting end of the tooth holder 1 is nested through the opening of the shoulder of the tooth shoe 2, the portion of the mounting end of the tooth holder 1 nested in the tooth shoe 2 is conical, and the shoulder of the tooth shoe 2 is provided with a conical structure with the same conical degree as the mounting end of the tooth holder 1.
Specifically, in the embodiment of the invention, the tooth shoe 2 comprises a straight line section and a wrapping section 4, the wrapping section 4 is a shoulder portion of the tooth shoe 2 and is used for protecting the tooth holder 1 nested on the tooth shoe 2, the straight line section is a handle portion of the tooth shoe 2, the straight line section and the wrapping section 4 are integrally formed, and the tooth shoe 2 is sleeved on the pick handle portion 3.
Specifically, in the embodiment of the present invention, a limiting mechanism may be disposed between the tooth holder 1 and the tooth shoe 2 to prevent the tooth shoe 2 from rotating during operation.
Specifically, in the embodiment of the present invention, the rotating tooth shoe 2 may cause a certain wear to the surface of the tooth holder 1, and the open slot on the limiting surface of the tooth holder 1 is easily worn by the limiting protrusion when the tooth shoe 2 is prevented from rotating. The tooth shoe 2 is used for protecting the tooth holder 1 from being abraded, and meanwhile, the service life of the tooth holder 1 is prolonged through the frequency of timely replacing the tooth shoe 2.
Referring to fig. 2-4, the starting point of the contact position between the linear section of the tooth shoe 2 and the tooth holder 1 is a, a snap ring is used at the point a to prevent the tooth shoe from falling off from the tooth holder, the straight line section of the tooth boot 2 is AB, the section wrapping section 4 comprises a first arc section BC, a first straight line section CD, a second arc section DE and a second straight line section EF, the connection point of the other end of the straight line section and the wrapping section 4 is B, wherein the connection point of one end of the first arc-shaped section and the other end of the straight line section is B, the connection point of the other end of the first arc-shaped section and one end of the first straight line section is C, the connecting point of the other end of the first straight line section and one end of the second arc section is D, the connecting point of the other end of the second arc section and one end of the second straight line section is E, and the contact point of the other end of the second straight line section and one side of the tooth holder 1 far away from the cutting pick handle 3 is F. The cross sections of the first arc-shaped section and the second arc-shaped section are both arc-shaped, and the cross sections of the first straight line section and the second straight line section are straight lines.
Specifically, in the embodiment of the present invention, the tooth holder 1 is generally used in cutting parts of mining machinery and construction machinery, the tooth holder 1 is generally welded on the cutting parts, because a welding connection manner is adopted, the tooth holder 1 is generally of a non-detachable structure, in order to prolong the service life of the tooth holder 1, a tooth shoe 2 is often used as a protection member, the tooth shoe 2 is generally inserted into the tooth holder 1, the tooth shoe 2 is of a replaceable structure, the service life of the tooth holder 1 is prolonged by timely replacing the tooth shoe 2, and the tooth shoe 2 is provided with a special structure including a first arc-shaped section BC, a first straight-line section CD, a second arc-shaped section DE and a second straight-line section EF, so as to effectively protect the installation end of the tooth holder 1.
In particular, in the embodiment of the invention, the tooth shoe 2 prevents the tooth shoe 2 from axially moving on the pick shank 3 of the tooth holder 1 by fixedly connecting the tooth shoe shank with the connecting end of the tooth holder 1, and the external force applied to the tooth holder 1 is borne by the mounting end of the tooth holder 1, and because of the special connection of the mounting end of the tooth holder 1 with the tooth shoe 2 and the special structural arrangement of the contact portion, the conical structure of the contact part of the side of the tooth holder 1 far away from the roller and the wrapping section 4 of the tooth shoe 2 bears the pressure, and a gap is arranged between an inner hole at one side of the tooth holder close to the roller and the tooth shoe 2, so that the tooth shoe 2 has the maximum protection force on the tooth holder 1, therefore, the external force on the tooth holder 1 is reduced to the minimum, the use abrasion of the tooth holder 1 is effectively protected, and the service life of the tooth holder 1 is prolonged.
Specifically, in the embodiment of the invention, the pick shank 3 includes a first pick shank and a second pick shank, the diameter of the first pick shank is larger than that of the second pick shank, the rotation of the pick shank 3 drives the tooth shoe 2 sleeved on the pick shank 3 to rotate, the length of the first pick shank is generally smaller than that of the second pick shank, and the thickness of the first pick shank is larger than that of the second pick shank.
Specifically, in the embodiment of the present invention, the wrapping section 4 of the tooth shoe 2 includes a first arc section BC, a first straight line section CD, a second arc section DE, and a second straight line section EF, which are connected to the outer side of the mounting end of the tooth holder 1, so as to protect the outer surface of the tooth holder 1, and since the mounting end of the tooth holder 1, which is far away from the drum, bears most of the external force of the tooth holder 1, the tooth shoe 2 protects the mounting end of the tooth holder 1 with a greater force, thereby prolonging the service life of the tooth holder 1.
Specifically, in the embodiment of the present invention, a groove 5 is disposed at one end of the straight line section of the tooth shoe 2, which is far away from the wrapping section 4, the groove 5 is used for disposing a snap ring for connecting with the connecting end of the tooth base 1, on one hand, the connecting end of the tooth base 1 is fixed to the shank of the tooth shoe 2, on the other hand, axial movement of the tooth shoe 2 on the tooth base 1 during movement is avoided, and the connecting end of the tooth base 1 is fixedly connected to the shank of the tooth shoe 2 through the snap ring, and the snap ring is detachably connected to facilitate subsequent replacement of the tooth shoe 2, so that the protection period of the tooth base 1 by the tooth shoe 2 is prolonged, and the service life and the working efficiency of the tooth base 1 are prolonged to a greater extent.
In the process of cutting coal or rock by the relative motion of the cutting pick handle part 3 and the cutting pick shoe 2, the axial direction acting force generated by the shoulder part of the cutting pick handle part 3 on the cutting pick shoe 2 generates thrust along the axial direction to the tooth holder 1 correspondingly, the tooth shoe handle part is fixedly connected with the tooth holder 1 to generate thrust along the axial direction to the tooth holder 1, meanwhile, the tooth shoe 2 generates acting force along the radial direction on the tooth holder 1, extrusion stress is generated between the linear section of the tooth shoe 2 and the end surface of the tooth holder 1 and the surface of the cutting pick handle part 3, and relative sliding is realized along the x-axis direction, a longer linear section is set to realize buffering of the acting force, and a wrapping section is set to be a structure of a first arc section, a first straight section, a second arc section and a second linear section, when the tooth shoe is stressed, the first linear section and the second arc section are combined into an arc structure, and a second straight line section is arranged to wrap the tooth holder to form a conical surface structure, the wrapping section of the tooth shoe bears abrasion during movement and bears and transmits stress generated during movement of the cutting tooth, so that acting force is matched with the conical surface of the tooth holder 1 through the tooth shoe 2 to protect the tooth holder 1 through conduction force.
Specifically, in the embodiment of the invention, the central position of the leftmost end of the second cutting pick handle in the transverse direction and the longitudinal direction is set as the origin O, as shown in the figure, the x axis is set along the horizontal direction of the transverse center line of the first cutting pick handle at the position of the origin O, the y axis is set along the vertical direction of the tooth shoe at the origin O, and the coordinate axis Oxy is established.
In particular, in the embodiment of the invention, in the first quadrant of the coordinate axis Oxy, the cross-section straight line shape between the contact point A and the contact point B of the tooth shoe close to the direction of the tooth holder is,
Y1= D1+D3
where D1 represents the radius of the shank of the second pick and D3 represents the thickness of the shoe where it contacts the shank of the second pick.
The length of a section straight line between a straight line contact point A and a straight line contact point B of the tooth boot is,
G1= L1+1/2×L2
where L1 represents the length of the second pick shank and L2 represents the length of the first pick shank.
Specifically, in the embodiment of the invention, the straight section of the tooth shoe 2 is contacted with the side, close to the cutting pick handle 3, of the tooth holder 1 on the side far away from the roller, and in operation, the straight section of the tooth shoe 2 on the side far away from the roller is contacted with the tooth holder 1, so that the tooth holder 1 is driven to move along with the movement of the tooth shoe 2. During operation, the cutting tooth shank 3 generates thrust leftwards along the axial direction to the cutting tooth shoe 2, the cutting tooth shoe 2 correspondingly generates thrust leftwards along the axial direction to the tooth holder 1 along the set x-axis direction, meanwhile, the cutting tooth shoe 2 generates acting force downwards along the direction shown in the figure along the radial direction to the tooth holder 1, therefore, extrusion stress is generated between the end face of the tooth holder 1 between the contact point A and the contact point B and the surface of the cutting tooth shank 3, and the cutting tooth shank 3 relatively slides along the x-axis direction, a long straight line section is set to buffer the acting force, and particularly, when the cutting tooth shank 3 has a step, at least one half length of the end with the larger diameter along the radial direction is used as a buffer section as shown in the figure, so that the tooth holder 1 is fully discharged, and extrusion damage to a clamping ring for fixing is avoided.
In particular, in the embodiment of the invention, in the first quadrant of the coordinate axis Oxy, the section curve formula of the first arc-shaped section of the contact part of the inner side of the first arc-shaped section BC of the tooth shoe 2 and the side of the mounting end of the tooth holder 1 close to the cutting pick shank 3 is as follows,
Y2＝L1+(D1+D3)×tan(a+D1/L1+D2/L2)
where L1 represents the length of the second pick shank, D1 represents the radius of the second pick shank, D3 represents the thickness of the shoe where it contacts the second pick shank, a represents the angle between the line and the horizontal plane made up of the two ends of the first segment, D2 represents the radius of the first pick shank, and L2 represents the length of the first pick shank.
In operation, pick stalk portion 3 produces along axial thrust left to tooth boots 2, along the x axle direction of setting for, tooth boots 2 are relative produces along axial thrust left to the toothholder, simultaneously, tooth boots 2 produce along radial direction thrust to toothholder 1, the terminal surface of tooth boots 2 produces along the pressure of the upper left side of x axle direction between this application contact point B and the contact point C, set up the clearance between first segmental arc and toothholder 1, in order to realize the buffering of tooth boots 2 to toothholder 1 effort, when the contained angle a of the straight line that two extreme points of first segmental arc are constituteed and horizontal plane is big more, first segmental arc is steeper, when an is little more, first segmental arc is gentler, reduce through the setting of first segmental arc setting tooth boots 2 are to the effort of toothholder 1 when the atress, through the abundant buffering of first segmental arc, reduce the atress to toothholder 1.
Specifically, in the embodiment of the invention, the first arc-shaped section is in contact with one side, close to the pick shank 3, of the mounting end of the block 1, so that the mounting end of the block 1 is prevented from being in direct contact with the pick shank 3, the radian of the first arc-shaped section is the same as that of the mounting end of the block 1, and one side of the mounting end of the block 1 is connected with the first arc-shaped section, so that the mounting end of the block 1 is protected better.
In particular, in the embodiment of the invention, in the first quadrant of the coordinate axis Oxy, the cross-sectional straight line length of the contact part between the first straight line segment CD of the tooth shoe 2 and the outer part of the installation end of the tooth holder 1 is,
Y3= (D4- D3）/5
where D3 represents the shoe thickness at the point where the shoe contacts the second pick shank and D4 represents the thickness of the wrap section. Connect first segmental arc BC and second segmental arc DE through setting up first straightway CD to through first straightway and toothholder 1 direct contact, make toothholder 1 when receiving the effort of tooth boots 2, the atress is even, promotes the toothholder whole and moves left along the x axle direction, reduces the effort of tooth boots 2 on to toothholder 1.
In particular, in the embodiment of the invention, in the first quadrant of the coordinate axis Oxy, the cross-sectional curve formula of the second arc-shaped section DE of the contact part of the port of the side of the mounting end of the tooth holder 1 far away from the cutting pick shank 3 and the inner side of the shoulder part of the tooth shoe 2 is as follows
Y4=cos[(b+D2+D4-D1-D3-D5)-sinY2]
Wherein D1 represents the radius of the second pick shank, D3 represents the thickness of the shoe at the location where the shoe contacts the second pick shank, D2 represents the radius of the first pick shank, D4 represents the thickness of the wrapping section, D5 represents the thickness of the shoe at the location of the side of the block mounting end remote from the pick shank and the end of the second linear section remote from the second arcuate section, and b is the angle between the horizontal and the line made up of the two end points of the second arcuate section.
Specifically, in the embodiment of the invention, during operation, the cutting pick shank 3 generates thrust leftwards along the axial direction to the cutting pick shoe 2, the shoulder of the cutting pick shoe 3 generates thrust leftwards to the tooth holder 1 along the x-axis direction, meanwhile, the second arc-shaped section of the cutting pick shoe generates downward thrust to the tooth holder, a left lower acting force is generated between the second arc-shaped sections DE of the cutting pick shoe to the tooth holder 1, when the gentler second arc-shaped sections are arranged, the stressed area of the tooth holder 1 is increased, the average stress is more uniform, the tooth holder is fully relieved through the arc angle of the second arc-shaped sections, the loss to the tooth holder 1 is reduced, the second arc-shaped sections are in contact with the port on the side, away from the cutting pick shank 3, of the mounting end of the tooth holder 1, the arc of the second arc-shaped sections corresponds to the arc of the side, away from the cutting pick shank 3, and no gap exists between the second arc-shaped sections and the tooth holder 1, thereby avoid toothholder 1 produces the inhomogeneous condition of atress when receiving external force, and make the parcel section 4 of tooth boots 2 is right the installation end protection of toothholder 1 is complete, makes the installation end atress of toothholder 1 is even, reduces the atress of the internal surface of toothholder 1 and hole, thereby prolongs the life of toothholder 1.
In particular, in the embodiment of the present invention, in the first quadrant of the coordinate axis Oxy, the cross-sectional straight line shape of the second straight line segment is expressed as,
Y5=（D4/L2）×x –L1/L2×D4 +1/3×D4
where L1 represents the length of the second pick shank, L2 represents the length of the first pick shank, and D4 represents the thickness of the wrapped section.
The cross-sectional straight-line length of the second straight-line segment is expressed as,
G2=D4/2+L2/8
where D4 represents the thickness of the wrapped section and L2 represents the length of the first pick shank.
Specifically, in the embodiment of the invention, in operation, the cutting pick shank 3 generates axial leftward thrust on the cutting pick shoe 2, the cutting pick shoe 2 correspondingly generates axial leftward thrust on the tooth holder 1 along a set x direction, meanwhile, the cutting pick shoe 2 generates radial thrust on the tooth holder 1, a longer second straight line section is arranged to wrap the tooth holder by the cutting pick shoe 2, so that loss of the cutting pick shoe on the tooth holder when the cutting pick shoe is stressed is reduced, the second straight line section can completely or partially wrap the mounting end of the tooth holder, increase the stressed contact area of the tooth holder and reduce the acting force of the cutting pick shoe on the tooth holder, moreover, the length of the second straight line section is the part of the cutting pick shoe 2 wrapping the mounting end of the tooth holder 1 far away from the cutting pick shank 3, the length of the second straight line section is related to the length of the first shank and the thickness of the wrapping section 4, the longer the first pick shank portion is, the longer the second straight line portion is, the thicker the wrapping section 4 is, and the longer the second straight line portion is, and the length of the pick shoe 2 is adjusted accordingly according to the application environment of the pick holder 1 in the actual process, so as to achieve the optimal protection effect on the pick holder 1.
Specifically, in the fourth quadrant of the coordinate axis Oxy, the straight line segment of the tooth shoe 2 is A1B1The section wrapping section 4 comprises a first arc-shaped section B1C1A first straight line segment C1D1A second arc segment D1E1And a second straight line segment E1F1The cross sections of the first arc-shaped section and the second arc-shaped section are both arc-shaped, and the cross sections of the first straight line section and the second straight line section are straight lines.
In particular, in the present embodiment, the holder 1 is subjected to axial and longitudinal forces during relative rotation of the pick shank 3 and the shoe 2, the pressure in the axial direction being denoted as FLeft side ofAnd FRight sideThe pressure in the longitudinal direction is denoted FOn the upper partAnd FLower partIn the fourth quadrant of the coordinate axis Oxy, a gap is provided between the tooth holder 1 and the tooth shoe 2, the lateral gap of which is indicated as,
Q1 = (Fon the upper part- FLower part)/ FOn the upper part+D3/D4
The longitudinal gap is shown as being,
Q2 = (Fleft side of- FRight side)/ FLeft side of
In particular, in the fourth quadrant of the coordinate axis Oxy, the straight line segment a of the tooth shoe 2 is shown in the embodiment of the invention1 B1A longitudinal gap is arranged between the tooth shoe and the tooth holder 1, and the tooth shoe is close to a straight line section A in the direction of the tooth holder1 B1The cross-sectional straight line shape between the two is,
Y 11= -（D1+D3）-Q2
where D1 represents the radius of the second pick shank, D3 represents the thickness of the shoe where it contacts the second pick shank, and Q2 represents the longitudinal clearance between the block and the shoe.
Straight line segment A of the tooth boot1 B1The length of the cross-sectional straight line therebetween is,
G 11= L1+1/2×L2
where L1 represents the length of the second pick shank and L2 represents the length of the first pick shank.
In particular, in the fourth quadrant of the coordinate axis Oxy, the first arc segment B of the tooth shoe 2 in the exemplary embodiment of the invention1C1The formula of the cross-sectional curve of (A) is,
Y 12=L1+(D1+D3)×tan(-a+D1/L1+D2/L2+Q1)
where L1 represents the length of the second pick shank, D1 represents the radius of the second pick shank, D3 represents the thickness of the shoe where it contacts the second pick shank, a represents the angle between the line and the horizontal plane made up of the two ends of the first segment, D2 represents the radius of the first pick shank, L2 represents the length of the first pick shank, and Q1 represents the transverse clearance between the block and the shoe.
In particular, in the embodiment of the invention, in the fourth quadrant of the coordinate axis Oxy, the first straight line segment C of the tooth shoe 21D1The length of the straight line of the cross section of the steel plate is,
Y 13= (D4- D3）/5
where D3 represents the shoe thickness at the point where the shoe contacts the second pick shank and D4 represents the thickness of the wrap section.
In particular, in the fourth quadrant of the coordinate axis Oxy, the second arc segment D of the tooth shoe 2 in the exemplary embodiment of the invention1E1The formula of the cross-sectional curve of (A) is,
Y 14= cos[(-b+D2+D4-D1-D3-D5+q1)-sinY2]
wherein D1 represents the radius of the second pick shank, D3 represents the thickness of the shoe at the location where the shoe contacts the second pick shank, D2 represents the radius of the first pick shank, D4 represents the thickness of the wrapping section, D5 represents the thickness of the shoe at the location of the side of the block mounting end remote from the pick shank and the end of the second linear section remote from the second arcuate section, b is the angle between the line and the horizontal plane formed by the two end points of the second arcuate section, and Q1 represents the lateral clearance between the block and the shoe.
In particular, in the fourth quadrant of the coordinate axis Oxy, the second straight line segment E of the tooth shoe 2 is shown in the embodiment of the invention1F1The cross-sectional straight line shape of (a) is expressed as,
Y 15=-（D4/L2）×x –L1/L2×D4 +1/3×D4 –Q1
where L1 represents the length of the second pick shank, L2 represents the length of the first pick shank, D4 represents the thickness of the wrapped section, and Q1 represents the transverse clearance between the block and the shoe.
The cross-sectional straight-line length of the second straight-line segment is expressed as,
G 15=D4/2+L2/8
where D4 represents the thickness of the wrapped section and L2 represents the length of the first pick shank.
In the relative rotation process of cutting pick stalk portion 3 and tooth boots 2, through set up the clearance between toothholder 1 and tooth boots 2, play the guard action to the toothholder of fourth quadrant, and when tooth boots received huge pressure to produce the displacement, toothholder 1 plays the fixed action to tooth boots, slows down the effort of tooth boots. It is mainly through the conical surface cooperation between the toothholder 1 of first quadrant and the tooth boots 2, under the effect of conduction force, slows down the loss of pick stalk portion to the toothholder, simultaneously through setting up the clearance between the toothholder 1 of fourth quadrant and tooth boots 2, protects the erection end of the toothholder of fourth quadrant not atress, protects the toothholder link of fourth quadrant not worn and torn simultaneously.
Specifically, in the embodiment of the present invention, the inner hole of the block 1 is used for installing cutting picks, the number of the inner holes may be one or multiple, the specific structure of the inner hole may be set according to the specific structure of the cutting pick, the present invention does not limit the specific structure and number of the inner holes, and all the details are subject to implementation.
Specifically, in the embodiment of the present invention, the tooth shoe 2 is replaceable, the tooth base 1 is protected by the tooth shoe 2, the service life of the tooth base 1 is prolonged, and when the tooth shoe 2 is damaged during use, the tooth shoe 2 is replaced in time, so that the protection of the tooth base 1 by the tooth shoe 2 is maximized, and the service life of the tooth base 1 is further prolonged.
Specifically, compared with the commonly used tooth holder and tooth shoe system, the most important structure of the tooth holder and tooth shoe system is that the wrapping section on the tooth shoe is used for bearing the abrasion of coal or rock and bearing and transmitting the stress generated in the process of cutting the rock by a cutting pick. The wrapping section on the tooth shoe can be complete or segmented in the circumference. The matching surface of the wrapping section on the tooth shoe and the tooth seat can be a conical surface or a pyramid surface. The wrapping section on the tooth boot can transmit force by a conical surface or a step.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention; various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A tooth holder and tooth shoe system, comprising: a tooth holder and a tooth shoe, wherein,
the tooth shoe is sleeved on the tooth holder, the tooth holder comprises a mounting end and a connecting end, the tooth shoe comprises a straight line section and a wrapping section, the connecting end of the tooth holder is connected with the straight line section of the tooth shoe, the mounting end of the tooth holder is nested in the wrapping section of the tooth shoe, the straight line section is a handle part of the tooth shoe and used for fixedly connecting the tooth holder with the tooth shoe, the wrapping section is a shoulder part of the tooth shoe and used for protecting the tooth holder nested in the tooth shoe, the straight line section and the wrapping section are integrally formed, the tooth shoe is sleeved on the handle part of the tooth holder, a gap is formed between an inner hole on one side of the tooth holder close to the roller and the tooth shoe, and the mounting end on one side of the tooth holder far away from the roller is connected with the tooth shoe;
the starting point of the contact position of the straight line section of the tooth shoe and the tooth holder is A, the wrapping section comprises a first arc section, a first straight line section, a second arc section and a second straight line section, wherein the contact point of one end of the first arc section and the other end of the straight line section is B, the contact point of the other end of the first arc section and one end of the first straight line section is C, the contact point of the other end of the first straight line section and one end of the second arc section is D, the connection point of the other end of the second arc section and one end of the second straight line section is E, the contact point of the other end of the second straight line section and one side of the tooth holder far away from the tooth holder is F, the sections of the first arc section and the second arc section are both arc-shaped, and the sections of the first straight line section and the second straight line section are straight lines;
in the process of cutting coal or rock by the cutting pick, the shoulder part of the shank of the cutting pick generates axial acting force on the tooth shoe, the corresponding tooth holder generates axial leftward thrust on the tooth shoe, the shank of the tooth shoe is fixedly connected with the tooth holder and generates axial rightward thrust on the tooth holder, meanwhile, the tooth shoe generates radial acting force on the tooth holder, the tooth shoe is provided with a longer straight line section to buffer the acting force, a wrapping section is arranged to be a structure of a first arc section, a first straight line section, a second arc section and a second straight line section, when the tooth shoe is stressed, the first arc section and the second arc section are combined into an arc structure through the first straight line section, the second straight line section is arranged to wrap the tooth holder to form a conical surface structure, the wrapping section of the tooth shoe bears abrasion during motion and bears and transmits the stress generated during motion of the cutting pick, so that the acting force is matched with the conical surface of the tooth holder, to protect the tooth holder by conduction.
2. The holder shoe system of claim 1, wherein the pick shank includes a first pick shank and a second pick shank, the first pick shank having a radius greater than a radius of the second pick shank, the first pick shank having a length less than a length of the second pick shank;
the method comprises the steps that an original point O is arranged at the leftmost end of the second cutting pick handle in the transverse direction and the central position of the second cutting pick handle in the longitudinal direction, an x axis is arranged at the position of the original point O in the horizontal direction of the transverse central line of the first cutting pick handle, a y axis is arranged at the original point O in the vertical direction of a tooth shoe, a coordinate axis Oxy is established, in a first quadrant of the coordinate axis Oxy, a conical surface matched stress is formed between the mounting end of the tooth holder and the tooth shoe, the conical surface matched stress is a conical surface or a pyramidal surface, and in a fourth quadrant of the coordinate axis Oxy, a gap is formed between the tooth holder and the tooth shoe.
3. A tooth-holder shoe system according to claim 2, characterized in that in the first quadrant of the coordinate axis Oxy, the cross-sectional straight shape of the tooth-holder shoe between the contact point A and the contact point B near the tooth-holder direction is,
Y1= D1+D3
where D1 represents the radius of the second pick shank and D3 represents the thickness of the shoe where it contacts the second pick shank;
the length of a section straight line between a straight line contact point A and a straight line contact point B of the tooth boot is,
G1= L1+1/2×L2
where L1 represents the length of the second pick shank and L2 represents the length of the first pick shank.
4. The block shoe system according to claim 3, wherein in a first quadrant of the coordinate axis Oxy, the first arc segment BC of the contact portion of the mounting end of the shoe with the block on the side closer to the shank of the pick has the formula,
Y2＝L1+(D1+D3)×tan(a+D1/L1+D2/L2)
where L1 represents the length of the second pick shank, D1 represents the radius of the second pick shank, D3 represents the thickness of the shoe where it contacts the second pick shank, a represents the angle between the line and the horizontal plane made up of the two ends of the first segment, D2 represents the radius of the first pick shank, and L2 represents the length of the first pick shank.
5. A tooth-holder shoe system according to claim 4, characterized in that the contact portion of the first straight line segment CD of the tooth-holder shoe with the tooth-holder mounting end has a cross-sectional straight line length in the first quadrant of the coordinate axis Oxy of,
Y3= (D4- D3）/5
where D3 represents the shoe thickness at the point where the shoe contacts the second pick shank and D4 represents the thickness of the wrap section.
6. The block shoe system according to claim 5, wherein in the first quadrant of the coordinate axis Oxy, the port of the block mounting end on the side remote from the pick shank and the second arc segment DE of the contact portion inside the shoulder of the shoe have the formula,
Y4=cos[(b+D2+D4-D1-D3-D5)-sinY2]
wherein D1 represents the radius of the second pick shank, D3 represents the thickness of the shoe at the location where the shoe contacts the second pick shank, D2 represents the radius of the first pick shank, D4 represents the thickness of the wrapping section, D5 represents the thickness of the shoe at the location of the side of the block mounting end remote from the pick shank and the end of the second linear section remote from the second arcuate section, and b is the angle between the horizontal and the line made up of the two end points of the second arcuate section.
7. The abutment shoe system according to claim 6, wherein, in a first quadrant of the coordinate axis Oxy, the cross-sectional rectilinear shape of said second rectilinear segment EF is represented as,
Y5=（D4/L2）×x –L1/L2×D4 +1/3×D4
wherein L1 represents the length of the second pick shank, L2 represents the length of the first pick shank, D4 represents the thickness of the wrapped section;
the cross-sectional straight-line length of the second straight-line segment is expressed as,
G2=D4/2+L2/8
where D4 represents the thickness of the wrapped section and L2 represents the length of the first pick shank.
8. A system as claimed in claim 7, characterized in that in the fourth quadrant of the coordinate axis Oxy, the straight section of the shoe is A1B 1, the section wrapping section comprises a first arc-shaped section B1C1, a first straight section C1D1, a second arc-shaped section D1E1 and a second straight section E1F1, a gap is provided between the tooth holder and the shoe, the lateral gap being indicated as,
q1 = (under-F)/over F + D3/D4
The longitudinal gap is shown as being,
q2 = (fpleft-fpright)/fpleft
In the formula, axial direction pressing forces to which the tooth holder is subjected are denoted as fpleft and fdight, and longitudinal direction pressing forces are denoted as fdup and fddown.
9. The tooth-shoe system according to claim 8, characterized in that in the fourth quadrant of the coordinate axis Oxy, a longitudinal clearance is provided between the straight line segment A1B 1 of the tooth-shoe and the tooth-seat, and the cross-sectional straight line shape between the straight line segment A1B 1 of the tooth-shoe in the direction close to the tooth-seat is,
Y11= -（D1+D3）-Q2
where D1 represents the radius of the second pick shank, D3 represents the thickness of the shoe where it contacts the second pick shank, and Q2 represents the longitudinal gap between the block and the shoe;
the length of a cross-sectional straight line between the straight line sections A1B 1 of the tooth shoe is,
G11= L1+1/2×L2
wherein L1 represents the length of the second pick shank and L2 represents the length of the first pick shank;
the formula of the section curve of the first arc-shaped section B1C1 of the tooth shoe is as follows,
Y12= L1+(D1+D3)×tan(-a+D1/L1+D2/L2+Q1)
where a denotes the angle between the line of the two end points of the first arcuate segment and the horizontal, D2 denotes the radius of the first pick shank, Q1 denotes the transverse clearance between the block and the shoe;
the first straight section C1D1 of the tooth shoe has a cross-sectional straight length of,
Y13= (D4- D3）/5
where D3 represents the shoe thickness at the point where the shoe contacts the second pick shank, and D4 represents the thickness of the wrapped section;
the cross-sectional curve formula of the second arc-shaped section D1E1 of the tooth shoe is as follows,
Y14=cos[(-b+D2+D4-D1-D3-D5+Q1)-sinY2]
wherein b represents the included angle between a straight line formed by two end points of the second arc-shaped section and a horizontal plane, and Q1 represents the transverse gap between the tooth holder and the tooth shoe;
the second straight section E1F1 of the tooth shoe has a cross-sectional rectilinear shape represented by,
Y15=-（D4/L2）×x –L1/L2×D4 +1/3×D4 –Q1
the cross-sectional straight-line length of the second straight-line segment is expressed as,
G15=D4/2+L2/8
where x represents a constant in the x-axis direction and Q1 represents the lateral clearance between the tooth holder and the tooth shoe.
10. The tooth holder and tooth shoe system according to claim 1, wherein a snap ring is arranged at one end of the straight section of the tooth shoe, which is far away from the wrapping section, and connected with the connecting end of the tooth holder so as to fixedly connect the tooth holder and the tooth shoe, the wrapping section on the tooth shoe is complete or segmented on the circumference, the wrapping section on the tooth shoe transmits force by using a conical surface or transmits force by using a step, and the tooth shoe is replaceable.
CN202011179211.8A 2020-10-29 2020-10-29 Tooth holder and tooth boot system Active CN112282754B (en)

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2043746A (en) * 1978-12-12 1980-10-08 Hoverdale Eng Ltd Pick box
US4603911A (en) * 1983-03-10 1986-08-05 Santrade Ltd. Pick holding arrangements
CN101768992A (en) * 2008-12-30 2010-07-07 宁波浙东精密铸造有限公司 Excavating tooth component, tooth holder and bucket teeth
CN102828750A (en) * 2012-09-11 2012-12-19 三一重型装备有限公司 Cutting pick device and mining machine
CN107725049A (en) * 2017-10-31 2018-02-23 长安大学 A kind of anti-blocking hydraulic pick device of auto-pressurizing
CN109113740A (en) * 2018-08-22 2019-01-01 太原理工大学 The pick of infrared temperature-sensitive feedback wear-out failure
CN109763412A (en) * 2018-12-29 2019-05-17 瑞安市飞翔机械部件有限公司 Milling machine toothholder and tooth cover mounting structure
CN210598972U (en) * 2019-07-10 2020-05-22 肯纳金属(徐州)有限公司 Replaceable cutting system of heading machine
CN211777406U (en) * 2020-01-17 2020-10-27 筠连川煤芙蓉新维煤业有限公司 Combine and dig quick-witted pick holder subassembly

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2043746A (en) * 1978-12-12 1980-10-08 Hoverdale Eng Ltd Pick box
US4603911A (en) * 1983-03-10 1986-08-05 Santrade Ltd. Pick holding arrangements
CN101768992A (en) * 2008-12-30 2010-07-07 宁波浙东精密铸造有限公司 Excavating tooth component, tooth holder and bucket teeth
CN102828750A (en) * 2012-09-11 2012-12-19 三一重型装备有限公司 Cutting pick device and mining machine
CN107725049A (en) * 2017-10-31 2018-02-23 长安大学 A kind of anti-blocking hydraulic pick device of auto-pressurizing
CN109113740A (en) * 2018-08-22 2019-01-01 太原理工大学 The pick of infrared temperature-sensitive feedback wear-out failure
CN109763412A (en) * 2018-12-29 2019-05-17 瑞安市飞翔机械部件有限公司 Milling machine toothholder and tooth cover mounting structure
CN210598972U (en) * 2019-07-10 2020-05-22 肯纳金属(徐州)有限公司 Replaceable cutting system of heading machine
CN211777406U (en) * 2020-01-17 2020-10-27 筠连川煤芙蓉新维煤业有限公司 Combine and dig quick-witted pick holder subassembly

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Denomination of invention: A Tooth Seat and Shoe System

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