CN111550243A - Split type cutting pick, cutting head and mining mechanical equipment - Google Patents
Split type cutting pick, cutting head and mining mechanical equipment Download PDFInfo
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- CN111550243A CN111550243A CN202010367466.0A CN202010367466A CN111550243A CN 111550243 A CN111550243 A CN 111550243A CN 202010367466 A CN202010367466 A CN 202010367466A CN 111550243 A CN111550243 A CN 111550243A
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- 238000005520 cutting process Methods 0.000 title claims abstract description 153
- 238000005065 mining Methods 0.000 title claims abstract description 19
- 238000005452 bending Methods 0.000 claims description 9
- 230000007704 transition Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 12
- 238000005299 abrasion Methods 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 8
- 230000007246 mechanism Effects 0.000 abstract description 6
- 235000010585 Ammi visnaga Nutrition 0.000 abstract 6
- 244000153158 Ammi visnaga Species 0.000 abstract 6
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 description 23
- 239000000956 alloy Substances 0.000 description 23
- 239000003245 coal Substances 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 230000013011 mating Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000011435 rock Substances 0.000 description 5
- 229910000851 Alloy steel Inorganic materials 0.000 description 3
- 229910000746 Structural steel Inorganic materials 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000005553 drilling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000036346 tooth eruption Effects 0.000 description 1
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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
- E21C35/19—Means for fixing picks or holders
- E21C35/193—Means for fixing picks or holders using bolts as main fixing elements
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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
- E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
- E21B10/627—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable with plural detachable cutting elements
- E21B10/633—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable with plural detachable cutting elements independently detachable
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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
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
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Abstract
The invention provides a split type cutting pick, a cutting head and mining mechanical equipment. Split type pick includes: a pick head; the cutting pick holder is provided with a holder groove, and the cutting pick head is inserted and assembled with the holder groove; the cutting pick head is detachably connected with the cutting pick holder and is suitable for rotating around the central axis of the cutting pick holder, and the central axis is parallel to the extending direction of the cutting pick holder. The split type cutting pick comprises a cutting pick tooth head and a cutting pick tooth handle, the cutting pick tooth head and the cutting pick tooth handle are connected in a split type mode, and the cutting pick tooth head can rotate relatively in the operation process of a cutting mechanism provided with the split type cutting pick, so that the circumferential abrasion of the cutting pick tooth head is uniform, the eccentric wear is reduced, the service life of the split type cutting pick is prolonged, the number of the split type cutting picks replaced in the fully mechanized mining process is reduced, and the cost is reduced.
Description
Technical Field
The invention relates to the technical field of mine operation equipment, in particular to a split type cutting pick, a cutting head and mining mechanical equipment.
Background
At present, a cutting tooth is a key part on large-scale mining mechanical equipment such as a coal mine heading machine, a tunnel heading machine, a rotary drilling rig and a ditching machine, cutting is carried out through the cutting tooth in the actual working process, the cutting tooth is a main stress part, the cutting tooth can receive large impact load and friction force in the working process, the head of the cutting tooth is fast in abrasion and needs to be frequently replaced, the working efficiency is seriously influenced, and the cost is increased.
Disclosure of Invention
In order to ameliorate at least one of the above technical problems, it is an object of the present invention to provide a split cutting pick.
It is a further object of the invention to provide a cutting head including the split pick described above.
Another object of the invention is to provide a mining machine comprising a cutting head as described above.
To achieve the above object, according to a first aspect of the present invention, there is provided a split type cutting pick, comprising: a pick head; the cutting pick holder is provided with a holder groove, and the cutting pick head is inserted and assembled with the holder groove; the cutting pick bit is detachably connected with the cutting pick holder, and the cutting pick bit is suitable for rotating around the central axis of the cutting pick holder, and the central axis is parallel to the extension direction of the cutting pick holder.
Among this technical scheme, can dismantle with the pick holder through making the pick bit and be connected, can change after the pick bit wearing and tearing. The pick shank is a body of rotation and similarly the pick head is a body of rotation. The cutting mechanism operation in-process that is provided with split type pick can be rotatory around the central axis of pick holder through making the pick bit for the pick holder is rotatory around the central axis of pick holder, thereby makes the hoop wearing and tearing of pick bit even, reduces the eccentric wear, and then improves the life of split type pick, reduces the quantity of the split type pick of changing at the full-mechanized mining in-process, with reduce cost. Simultaneously, through reducing the number of times that split type pick was changed, guarantee work efficiency.
In addition, the split type cutting pick in the technical scheme provided by the invention can also have the following additional technical characteristics:
in the technical scheme, the cutting pick head comprises a head body and a pick body, wherein the pick body comprises a head part, a matching part and an inserting part which are sequentially connected; the head body is detachably connected with the head; the inserting part is inserted and assembled with the tooth handle groove and is provided with an annular groove; a positioning pin hole is formed in the pick shank, a limiting part is arranged in the positioning pin hole, and one end of the limiting part is embedded into the annular groove.
In the above technical solution, the limiting member is an elastic pin; the elastic pin is in transition fit with the positioning pin hole.
In the technical scheme, the width of the groove opening of the annular groove along the extension direction of the cutting pick holder is larger than the diameter of the limiting piece, so that the cutting pick head is suitable for moving along the extension direction of the cutting pick holder.
In the technical scheme, the cutting pick holder is provided with a guide inclined plane, and the matching part is provided with a matching inclined plane; the guide inclined plane is in contact fit with the matching inclined plane.
In the technical scheme, the length of the matching inclined plane along the extension direction of the pick holder is greater than the diameter of one end of the plug-in part connected with the plug-in part.
In the technical scheme, the number of the positioning pin holes is two, and the two positioning pin holes are symmetrically arranged along the circumferential direction of the cutting pick holder.
In any of the above technical solutions, the hardness of the head body is greater than the hardness of the tooth body; the bending strength of the tooth body is greater than that of the head body.
The technical scheme of the second aspect of the invention provides a cutting head, which comprises: a body; and the split type cutting pick in any one of the technical solutions of the first aspect, which is arranged on the body.
The cutting head provided by the technical scheme of the second aspect of the invention comprises the split type cutting pick in any one of the technical schemes of the first aspect, so that all the beneficial effects of any one of the technical schemes are achieved, and the details are not repeated herein.
The technical scheme of the third aspect of the invention provides mining mechanical equipment, which comprises: the cutting head according to any of the second aspect solution.
The mining machinery equipment provided by the technical scheme of the third aspect of the invention comprises the cutting head of any one of the technical schemes of the first aspect, so that all the beneficial effects of any one of the technical schemes are achieved, and the details are not repeated.
The excavating mechanical equipment can be a coal mine heading machine, a tunnel heading machine, a rotary drilling rig, a ditching machine and the like.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic view of a split cutting pick according to one embodiment of the present invention;
FIG. 2 is a cross-sectional view of the split pick shown in FIG. 1;
FIG. 3 is an exploded view of a split cutting pick according to one embodiment of the present invention;
FIG. 4 is a perspective view of a split cutting pick according to one embodiment of the present invention;
FIG. 5 is a schematic view of a cutting pick head according to one embodiment of the invention;
figure 6 is a schematic perspective view of a cutting head according to an embodiment of the invention.
Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 6 is:
100 split type cutting teeth; 10 a pick head; 20 a pick shank; 21 a gear shank slot; 23 positioning pin holes; 25 a guide slope; 31 an elastic pin; 11 head body; 13 a tooth body; 131 head part; 133 a mating portion; 1331 mating with a bevel; 135 inserting part; 1351 an annular groove; 200 of a cutting head; 210 body.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
The split pick 100, cutting head 200 and mining machine apparatus in some embodiments of the invention are described below with reference to fig. 1 to 6.
Some embodiments of the present application provide a split pick 100 comprising a pick head 10 and a pick shank 20.
Example one
As shown in fig. 1 and 3, the pick shank 20 is provided with a shank slot 21, and a portion of the pick head 10 is inserted into the shank slot 21 such that the pick head 10 is in a snug fit with the pick shank 20, so that the pick head 10 can be replaced when worn.
Further, pick holder 20 is the rotator, pick top 10 is the rotator, pick holder 20 and the same rotation axis setting of pick top 10, through setting up pick top 10 to the part that can be around the rotation axis is rotatory, make the cutting mechanism who is provided with this split type pick 100 be carrying out the operation in-process of excavating, pick top 10 can rotate, thereby make the hoop wearing and tearing of pick top 10 even, reduce the eccentric wear, and then improve the life of split type pick 100, reduce the split type pick 100's of changing at the full-mechanized in-process quantity and change frequency, with reduce cost, improve the operation efficiency of excavating.
Furthermore, the cutting pick head 10 and the cutting pick holder 20 are manufactured in a split mode, the cutting pick head 10 can be manufactured by adopting high-hardness and high-wear-resistance materials and a heat treatment mode, the cutting performance of the cutting pick head 10 is improved, and the situations that an alloy head falls off due to abrasion and the like are avoided; the cutting pick holder 20 can be made of materials with high toughness and high bending strength and a heat treatment mode, so that the bending strength of the cutting pick holder 20 is improved, and the situations of tooth breakage and the like are avoided; the requirement of the component on the cutting pick production process is reduced, and the product performance stability is improved.
In some embodiments, as shown in fig. 2 and 3, one end of the pick head 10 is provided with an annular groove 1351; a positioning pin hole 23 is formed in the cutting pick holder 20; the locating pin bore 23 opposes the annular recess 1351 when the pick head 10 and pick shank 20 are inserted. Wherein the annular groove 1351 is disposed circumferentially about the pick head 10. The limiting member penetrates through the positioning pin hole 23, and one end, facing the annular groove 1351, of the limiting member extends out of the positioning pin hole 23 and is embedded into the annular groove 1351 to limit axial displacement of the pick head 10. Before the cutting pick head 10 is replaced, the limiting part is firstly pulled out to replace the cutting pick head, and the cutting pick head is simple and convenient in assembly mode and convenient to operate.
Further, as shown in fig. 2 and 4, the limiting member is an elastic pin 31, and the elastic pin 31 is in transition fit with the positioning pin hole 23.
The elastic pin 31 is cylindrical, the outer diameter of the elastic pin 31 is slightly larger than the positioning pin hole 23, the elastic pin 31 is in interference fit with the positioning pin hole 23, the elastic pin 31 is fixed in the positioning pin hole 23, the elastic pin 31 is provided with a hollow hole, the elastic pin 31 is in clearance fit with the positioning pin hole 23 by deforming the elastic pin 31, the elastic pin 31 is detached from the positioning pin hole 23, and the elastic pin 31 is convenient to detach compared with other types of limiting parts. Of course, the stopper may be a positioning pin or the like.
In some embodiments, the number of the positioning pin holes 23 is multiple, the plurality of positioning pin holes 23 are arranged along the circumference of the cutting pick holder 20 at intervals, and meanwhile, the plurality of limiting parts are oppositely arranged, so that the connection stability of the cutting pick head 10 and the cutting pick holder 20 can be improved, the shearing stress acting on the limiting parts can be shared by the plurality of limiting parts, the risk that the limiting parts are damaged due to too large bearing load is reduced, and the use reliability of the equipment is improved.
Preferably, as shown in figure 3, the number of locator pin holes 23 is 2, with two locator pin holes 23 being symmetrically disposed about the circumference of the pick shank 20. Not only avoids the excessive number of the positioning pin holes 23, can control the cost, simplifies the assembly and disassembly, but also provides a good supporting function, controls the balance of the pick head 10 from two opposite sides, and keeps the stability of the pick head 10 in the process of the movement of the pick head 10.
Example two
On the basis of the above embodiment, as shown in fig. 2 and 5, the cutting pick head 10 includes a head body 11 and a pick body 13; the tooth body 13 comprises a head part 131, a matching part 133 and an inserting part 135 which are connected in sequence; the inserting part 135 is inserted and matched with the gear handle groove 21, and the head body 11 is detachably connected with the head 131.
The head body 11 is an alloy head, specifically a cemented carbide head. The head 131 is provided with a groove, and the head body 11 is embedded in the groove. The hard alloy head 131 is made of high-strength alloy structural steel so as to improve the hardness and the wear resistance of the cutting pick head 10 and reduce the hardness grade difference with the hard alloy head, under the wear condition, the wear amount of the hard alloy head and the cutting pick head 10 tends to be consistent, and the condition that the alloy head falls off due to the fact that the hardness of the cutting pick head 10 is insufficient, and the wear is too fast can be avoided.
The head body 11 is detachably connected with the head 131, so that the head body 11 can be replaced independently after being worn, and the cost is saved.
EXAMPLE III
In addition to any of the embodiments described above, as shown in fig. 2 and 5, the width W of the slot of the annular groove 1351 in the direction of extension of the pick shank 20 is greater than the diameter of the stop so that the pick head 10 is adapted to move in the direction of extension of the pick shank 20.
By setting the width W of the slot of the annular groove 1351, the pick head 10 is able to move up and down in the direction of extension of the pick shank 20. Like this, when the cutterhead 200 carries out the mining work, when the pick bit 10 leaves the working face, the pick bit 10 because the centrifugal force effect, can be in the small clearance within range relative pick holder 20 to the axial direction motion of keeping away from pick holder 20, when the working face of contact mining once more bears the load, because the pick bit 10 can rotate, can carry out the cutting with the rock after rotatory at random, avoid the fixed position to receive wearing and tearing for a long time and lead to the pick to damage.
Example four
In either of the above embodiments, as shown in figures 3 and 5, the pick shank 20 is provided with a guide ramp 25 and the pick head 10 is provided with a mating ramp 1331; the guide slope 25 is in contact engagement with the engagement slope 1331.
Set up to the inclined plane through the contact surface with pick holder 20 and pick tool bit 10, can increase the area of contact of pick holder 20 and pick tool bit 10, when being convenient for pick tool bit 10 contact working face bearing load, with atress transmission to pick holder 20, through the high tenacity that pick holder 20 has, high bending strength reduces the impact of working face to pick tool bit 10 to improve the use reliability that split type pick 100 used.
In addition, through setting up direction inclined plane 25 and cooperation inclined plane 1331, adopt the mode of circular cone centering connection, make the pick top 10 because the centrifugal force is used, relative pick holder 20 is to keeping away from the axial direction motion back of pick holder 20, after the working face bearing load is excavated in the contact, the pick top 10 can get back to former assembly position, thereby can improve the repeated positioning precision of pick top 10 on pick holder 20 during the pick work, ensure the stability of cutting work access point, improve whole cutting mechanism, for example the job stabilization nature of cutterhead 200.
Specifically, the fitting slope 1331 is provided on the fitting portion 133.
Further, as shown in fig. 5, the length H of the mating ramp 1331 in the direction of extension of the pick shank 20 is greater than the diameter D of the end of the insertion portion 135 which connects to the insertion portion 135.
The length H along the extension of the pick shank 20 through the mating inclined surface 1331 is greater than the diameter D of the end of the cartridge portion 135 connected to the cartridge portion 135 to improve the positioning effect, so that the pick head 10 can be maintained at the same assembly position during the play process, and the torque is transmitted through the guide inclined surface 25 and the mating inclined surface 1331 to further improve the reliability of the use of the split pick 100.
Some embodiments of the present application provide a cutting head 200 including a split pick 100 of any of the embodiments described above.
As shown in fig. 6, the cutting head 200 provided in this embodiment includes a body 210 and a plurality of split picks 100. The plurality of split picks 100 are arranged in a spiral shape and are respectively arranged on the body 210. It will be appreciated that the split pick 100 may also have a different arrangement.
The cutting head 200 provided in this embodiment includes the split type cutting pick 100 in any of the above embodiments, so that all the advantages of any of the above embodiments are provided, and no further description is provided herein.
Some embodiments of the present application provide a mining machine apparatus including a cutting head 200 as in any of the embodiments described above.
The mining machinery provided by the present embodiment includes the cutting head 200 in any of the above embodiments, so that all the advantages of any of the above embodiments are provided, and no further description is provided herein.
The excavating mechanical equipment can be a coal mine heading machine, a tunnel heading machine, a rotary drilling rig, a ditching machine, a coal mining machine and the like.
The specific structure and the working principle of the split type cutting pick provided by the application are explained in a specific embodiment.
At present, when a cutting tooth of a heading machine is used for cutting a tunnel roadway, particularly a hard rock tunnel roadway, the cutting tooth is very severely worn and consumed, and the cutting tooth accounts for a large proportion of the construction cost of a tunnel. The existing cutting pick is generally an alloy steel tooth body and brazed hard alloy head structure limited by a production process, a heat treatment mode and the like, under the condition of complex working conditions, the hard alloy head and the alloy steel tooth body are influenced by high rock hardness and abrasion coefficient, the hard alloy head and the alloy steel tooth body are not abraded uniformly, and further the hard alloy head loses the protection of the tooth body to cause the falling off of the hard alloy head and the like.
The existing cutting pick has the following defects in the using process: 1) the abrasion of the alloy head and the head of the pick body is inconsistent, the pick head causes the alloy head to fall off, and the cutting pick is damaged. 2) The cutting pick requires a tooth shank part with good toughness and good bending resistance; the gear head part is required to have high hardness requirement and good wear resistance, two mutually restricted mechanical properties are realized in the same gear body, and the high performance is achieved at the same time, so that the process is difficult to implement. In the existing production process and heat treatment technology, the tooth head and the tooth handle cannot simultaneously meet the optimal performance requirement. 3) The pick head wears and the entire pick must be replaced and the shank portion of the pick cannot be reused.
To this end, an embodiment of the present application provides a split type cutting pick 100, which can balance the hardness gradients of the alloy head (i.e., the head body 11) and the head portion 131 of the pick body 13, maintain the wear consistency, make the hardness gradients of the pick head portion 131 of the pick body 13 and the pick shank 20 affected by the production process, have small hardness difference, and make the shank reusable, thereby reducing the consumption cost.
Specifically, the split pick 100 includes a pick head 10, a pick shank 20 and a resilient pin 31. A cutting pick head 10 of the heading machine or the coal mining machine is inserted into a cutting pick holder 20, one end of the cutting pick head 10 is provided with an annular groove 1351, the annular groove 1351 is connected with two symmetrical elastic pins 31, the cutting pick holder 20 is provided with a positioning pin hole 23, and the elastic pins 31 are fixedly arranged on the positioning pin hole 23 of the cutting pick holder 20.
The cutting pick holder 20 is provided with a guide inclined plane 25, the guide inclined plane 25 is annular and is an annular inclined plane, the cutting pick head 10 is provided with a matching inclined plane 1331, and the part of the cutting pick head 10 provided with the matching inclined plane 1331 is in a circular truncated cone shape. The circular truncated cone-shaped structures are connected and matched with each other on the annular inclined planes, wherein the length H of the matching inclined plane 1331 or the guide inclined plane 25 is larger than the matching diameter D of the end part, the width W of the groove opening of the annular groove 1351 of the cutting pick holder 10 is larger than the diameter of the elastic pin 31, and the positioning pin hole 23 of the cutting pick holder 20 is in transition fit with the elastic pin 31.
Two elastic pins 31 are symmetrically arranged on the pick holder 20 and can be completely fixed on the pick holder 20, two ends of each elastic pin 31 on the pick holder 20 do not protrude out of the outer wall surface of the pick holder 20 and completely sink into the pick holder 20, the pick holder 10 is guided into the pick holder 20 along the guide inclined plane 25 and limited in the axial direction by the elastic pins 31, the width W of the annular groove 1351 of the pick holder 10 is larger than the diameter of each elastic pin 31, and the pick holder 10 can move in the pick holder 20 in a small axial range.
The specific working principle is as follows:
when the pick head 10 is subjected to an impact load, it can engage the pick shank 20 along the guide ramp 25, transmitting the impact to the pick shank 20; when the cutting pick head 10 leaves the mining working face, the cutting pick head 10 is separated from the cutting pick holder 20 in a small clearance range due to centrifugal force, and when the load is borne again, the cutting pick head 10 can cut with rock (or coal rock) after randomly rotating due to the activity of the cutting pick head 10, so that the cutting pick head 10 is prevented from being damaged due to long-term abrasion of a fixed position.
The pick top 10 removes hard alloy head (being the head body 11), and other parts (being the pick body 13) adopt the preparation of high strength performance alloy structural steel, improve the hardness and the wearability of pick top 10, reduce the hardness grade difference of the pick body 13 of pick top 10 and hard alloy head, and under the wearing and tearing condition, the wearing and tearing volume of hard alloy head and pick top 10 tends to unanimously, can not lead to wearing and tearing too fast because of pick top 10 hardness is not enough, the condition that the alloy head drops.
The pick bit 10 and the pick holder 20 adopt conical centering to be connected, improve the positioning accuracy of pick bit 10 on the pick holder 20 during pick work, ensure the stability of cutting work access point, improve whole cutting mechanism's job stabilization nature.
The cutting pick head 10 and the cutting pick holder 20 are manufactured in a split mode, the cutting pick head 10 can be manufactured by adopting high-hardness and high-wear-resistance materials and a heat treatment mode, the cutting performance of the cutting pick head 10 is improved, and the situations that an alloy head falls off due to abrasion and the like are avoided; the cutting pick holder 20 can be made of materials with high toughness and high bending strength and a heat treatment mode, so that the bending strength of the cutting pick holder 20 is improved, and the situations of tooth breakage and the like are avoided; the requirement of the component on the cutting pick production process is reduced, and the product performance stability is improved.
The pick head 10 is connected with the pick holder 20 through the elastic pin 31, and when the pick head 10 is worn and damaged, the pick head can be replaced, and the pick holder 20 can be reused, so that the consumption cost is reduced.
Thus, the split type cutting pick 100 provided by the embodiment has at least the following beneficial effects:
1) because the whole hardness of the cutting pick bit 101 is higher, and the hardness difference between the tooth body 13 of the high-strength alloy structural steel and the alloy head (the head body 11) is small, the cutting pick consumption caused by excessive abrasion of the tooth body 13 is not easy to occur.
2) Because the pick bit 10 and the pick holder 20 adopt the conical surface fit, the repeated cutting entry point precision of the pick bit 10 is improved, and the pick working stability is improved.
3) The pick head 10 and the pick holder 20 are connected through the elastic pin 31, the pick head 10 can move with small clearance along the axial direction, and the annular abrasion of the pick head 10 is even through the rotary operation of the cutting mechanism, so that the eccentric wear is reduced.
4) The cutting pick head 10 can be replaced independently, reducing the cutting pick loss cost.
In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or unit must have a specific direction, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by 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 split cutting pick, comprising:
a pick head;
the cutting pick holder is provided with a holder groove, and the cutting pick head is inserted and assembled with the holder groove;
the cutting pick bit is detachably connected with the cutting pick holder, and the cutting pick bit is suitable for rotating around the central axis of the cutting pick holder, and the central axis is parallel to the extension direction of the cutting pick holder.
2. The split cutting pick of claim 1,
the cutting pick head comprises a head body and a pick body, and the pick body comprises a head part, a matching part and an inserting part which are sequentially connected;
the head body is detachably connected with the head;
the inserting part is inserted and assembled with the tooth handle groove and is provided with an annular groove;
a positioning pin hole is formed in the pick shank, a limiting part is arranged in the positioning pin hole, and one end of the limiting part is embedded into the annular groove.
3. The split pick of claim 2,
the limiting piece is an elastic pin;
the elastic pin is in transition fit with the positioning pin hole.
4. The split pick of claim 3,
the width of a groove opening of the annular groove along the extension direction of the cutting pick holder is larger than the diameter of the limiting piece, so that the cutting pick head is suitable for moving along the extension direction of the cutting pick holder.
5. The split pick of claim 2,
the cutting pick holder is provided with a guide inclined plane, and the matching part is provided with a matching inclined plane;
the guide inclined plane is in contact fit with the matching inclined plane.
6. The split pick of claim 5,
the length of the matching inclined plane along the extension direction of the pick holder is greater than the diameter of one end of the plug-in part connected with the plug-in part.
7. The split pick of claim 2,
the number of the positioning pin holes is two, and the two positioning pin holes are symmetrically arranged along the circumferential direction of the cutting pick holder.
8. The split pick of any one of claims 1 to 7,
the hardness of the cutting pick head is greater than that of the cutting pick handle;
the bending strength of the pick shank is greater than the bending strength of the pick head.
9. A cutter head, comprising: a body; and a split pick as claimed in any one of claims 1 to 8, provided on the body.
10. A mining machine apparatus, comprising: the cutting head of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010367466.0A CN111550243A (en) | 2020-04-30 | 2020-04-30 | Split type cutting pick, cutting head and mining mechanical equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010367466.0A CN111550243A (en) | 2020-04-30 | 2020-04-30 | Split type cutting pick, cutting head and mining mechanical equipment |
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| CN111550243A true CN111550243A (en) | 2020-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010367466.0A Pending CN111550243A (en) | 2020-04-30 | 2020-04-30 | Split type cutting pick, cutting head and mining mechanical equipment |
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| CN (1) | CN111550243A (en) |
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| CN104358571B (en) * | 2014-11-04 | 2016-08-17 | 中国矿业大学 | A kind of pick that can measure cutterhead temperature during mining machinery coal petrography cutting |
| CN207568604U (en) * | 2017-12-13 | 2018-07-03 | 大同市中科唯实矿山科技有限公司 | A kind of cutting head of roadheader pick and toothholder assembly |
| CN208294529U (en) * | 2018-06-01 | 2018-12-28 | 齐鲁交通发展集团有限公司 | A kind of detachable development machine pick |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202250083U (en) * | 2011-07-26 | 2012-05-30 | 三一重型装备有限公司 | Pick-holder subassembly and heading machine |
| CN102828750A (en) * | 2012-09-11 | 2012-12-19 | 三一重型装备有限公司 | Cutting pick device and mining machine |
| CN103912273A (en) * | 2013-01-04 | 2014-07-09 | 刘素华 | Jack anti-rotating easily-detachable reciprocating impact head of digger |
| CN203655292U (en) * | 2013-12-17 | 2014-06-18 | 北京市三一重机有限公司 | Cutting tooth assembly and engineering machine |
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Application publication date: 20200818 |
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