CN211692460U - Spray type cutting head with interchangeable conical cutting pick and flat cutting pick - Google Patents
Spray type cutting head with interchangeable conical cutting pick and flat cutting pick Download PDFInfo
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- CN211692460U CN211692460U CN202020259175.5U CN202020259175U CN211692460U CN 211692460 U CN211692460 U CN 211692460U CN 202020259175 U CN202020259175 U CN 202020259175U CN 211692460 U CN211692460 U CN 211692460U
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Abstract
The utility model provides a spray type cutting head with interchangeable conical cutting teeth and flat cutting teeth, belonging to the technical field of cutting device accessories of coal mining machinery, comprising a conical tooth component, a flat tooth component, a dust fall connecting seat, a pressing block and a cutting head body; the conical tooth assembly comprises a conical cutting tooth and a conical cutting tooth seat; the conical pick seat is provided with a conical pick mounting hole, and the lower part of the conical pick seat is provided with a quick inserting tenon; the conical cutting pick is rotatably arranged in the conical cutting pick mounting hole in a penetrating way; the flat tooth component comprises a flat cutting tooth, a flat cutting tooth seat and a locking screw; the flat pick seat is provided with a flat pick mounting hole and a screw mounting hole, and the lower part of the flat pick seat is provided with a quick inserting tenon; the flat cutting pick is inserted into the flat cutting pick, and the locking screw passes through the screw mounting hole and abuts against the screw groove of the flat cutting pick; the dust fall connecting seat is welded on the cutting head body; the pressing block seals the insertion opening of the insertion groove. Above-mentioned toper pick and the interchangeable spray type cutterhead of flat pick can change the pick according to different service conditions, have the dust fall function simultaneously.
Description
Technical Field
The utility model belongs to the technical field of colliery mining machinery cutting device accessory, specifically disclose a toper pick and flat pick interchangeable spray type cutterhead.
Background
Cutting picks are the most important rock breaking tools of mining equipment. Different cutting picks should be used under different geological conditions. Under geological conditions mainly comprising coal, flat cutting teeth with lower economic cost can be adopted; under geological conditions mainly including rocks, a conical cutting pick with self-sharpening performance is adopted. The cutting head for mounting the cutting pick has higher manufacturing and transportation cost and is very inconvenient to replace underground, so that the novel cutting head capable of replacing the cutting pick according to different use conditions is needed. In addition, due to the fact that the cutting teeth are in periodic contact with and separated from the coal rocks, the impact phenomenon is obvious, and a large amount of dust is generated, the dust is diffused in a closed roadway, the dust concentration in the roadway is increased, the visibility is reduced, the continuity of work and the health of workers are affected, and therefore dust falling treatment is very necessary.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a toper pick and the interchangeable spray type cutterhead of flat pick can change the pick according to different service conditions, have the dust fall function simultaneously.
In order to achieve the purpose, the utility model provides a spray type cutting head with interchangeable conical cutting teeth and flat cutting teeth, which comprises a conical tooth component, a flat tooth component, a dust fall connecting seat, a pressing block and a cutting head body; the conical tooth assembly comprises a conical cutting tooth and a conical cutting tooth seat; the conical pick seat is provided with a conical pick mounting hole, and the lower part of the conical pick seat is provided with a quick inserting tenon; the conical cutting pick is rotatably arranged in the conical cutting pick mounting hole in a penetrating way; the flat tooth component comprises a flat cutting tooth, a flat cutting tooth seat and a locking screw; the flat pick seat is provided with a flat pick mounting hole and a screw mounting hole, and the lower part of the flat pick seat is provided with a quick inserting tenon; the flat cutting pick is inserted into the flat cutting pick mounting hole, and the locking screw passes through the screw mounting hole and abuts against the screw groove of the flat cutting pick; the dust fall connecting seat is welded on the cutting head body and is provided with an inserting groove matched with the quick inserting tenon, the bottom surface is provided with a water distribution interface, the rear part is provided with a dust fall nozzle, and a built-in water path communicated with the water distribution interface and the dust fall nozzle is arranged in the dust fall connecting seat; the pressing block is used for being fixed on the dust-settling connecting seat after the quick insertion tenon and the insertion groove are assembled, and closing an insertion hole of the insertion groove; the cutting head is internally provided with a connecting end plate which is used for being connected with a cutting machine cantilever, the connecting end plate is provided with a water inlet, the upper part of the connecting end plate is a water storage cavity, a water distribution hole matched with a water distribution interface is arranged on the cavity wall above the connecting end plate, a slag discharge hole is arranged on the cavity wall below the connecting end plate, and a slag discharge plug is arranged in the slag discharge hole.
Furthermore, the fast tenon is a T-shaped tenon, the distance between the side positioning surfaces at two sides is gradually reduced from front to back, and the side positioning surfaces are in transitional connection with the back end surface through guide inclined surfaces; the inserting groove is matched with the fast inserting tenon.
Further, a press block mounting position is arranged on the dust fall connecting seat; the pressing block mounting position extends forwards from the insertion opening of the insertion groove and is provided with a fixing groove; the bottom surface of the pressing block is provided with a stop key matched with the fixing groove; the fixing groove and the stop key are both provided with screw holes, and the fixing screw penetrates through the screw holes to fix the pressing block on the pressing block mounting position.
Furthermore, the side surface of the dust fall connecting seat corresponding to the pressing block mounting position is an anti-friction surface; the two sides of the pressing block are antifriction surfaces; the distance between the wear reducing surfaces on the two sides is gradually increased from front to back.
Further, the bottom surface and the side of dust fall connecting seat are connected through the domatic transition of welding of inside slope.
Further, the conical cutting pick comprises a tooth handle, a tooth shoulder, a tooth bar and a conical part which are integrally formed; the tooth handle and the tooth bar are both cylindrical structures; the tooth shoulder is in a round platform structure, the bottom surface of the tooth shoulder is connected with the tooth handle, and the top surface of the tooth shoulder is connected with the tooth bar through an annular transition curved surface; the conical part is positioned on the toothed bar, hard alloy is brazed at the top of the conical part, and a plurality of oval anti-bending beams are uniformly arranged on the circumferential surface of the conical part; the oval bending-resistant beam is arranged in a mode of small top and big bottom, the oval outline curve of the oval bending-resistant beam is controlled by a parameter equation (1),
wherein c is a number greater than 2;
a plurality of rotation increasing grooves are formed in the tooth shoulders and the annular transition curved surface; the part of the tooth handle extending out of the conical cutting tooth mounting hole is provided with an annular clamping groove, and the annular clamping groove is matched with the baffle ring for the shaft.
Furthermore, the contact area of the front surface of the conical pick box and the cutting chips is a separating surface with an obtuse included angle; a wear-resistant material distributing block forming an acute angle with the horizontal direction is embedded on the separating surface; the wear-resistant distributing block is made of hard alloy.
Furthermore, the front surface of the conical pick box, which is in contact with the chips, is embedded with a wear-resistant distributing block which forms an acute angle with the horizontal direction.
The utility model has the advantages that:
1. the quick tenon of the conical pick seat and the quick tenon of the flat pick seat can be matched with the inserting groove of the dust-settling connecting seat, the conical pick and the flat pick can be quickly replaced on the same cutting head body without cutting and welding processes, the replacement process is simple, convenient and quick, the quick tenon dust-settling;
2. the pressing block is used for being fixed on the dust-fall connecting seat after the fast tenon and the inserting groove are assembled, and closing an inserting hole of the inserting groove, so that the reliable connection of the pick box and the dust-fall connecting seat is ensured, and the pick box is prevented from falling off in the cutting process;
3. built-in waterway system of dust fall connecting seat can be with the water in the cutterhead body water storage chamber not through the pick seat, and the dust fall nozzle blowout at direct follow dust fall connecting seat rear portion reaches the dust suppression purpose to can cool off arranging at the hou mian adjacent pick of this pick simultaneously, reduced the influence to spraying system when the pick seat is dismantled and is changed simultaneously.
Drawings
FIG. 1 is an assembly view of a conical pick spray type cutting head provided by the present invention;
FIG. 2 is an assembly view of the flat pick spray type cutting head provided by the present invention;
FIG. 3 is an exploded view of a conical pick, a conical pick holder, a dust-settling connecting seat and a fixing block;
FIG. 4 is an assembly view of the conical pick and the conical pick block;
FIG. 5 is a schematic structural view of a conical pick box;
FIG. 6 is an exploded view of a flat pick, a flat pick holder, a dust suppression connecting holder and a fixed block;
fig. 7 is a sectional view of the dust settling connecting seat and the fixing block;
FIG. 8 is an assembly view of the quick-insertion tenon and the dust-settling connecting seat;
figure 9 is a cross-sectional view of the cutting head.
In the figure: 1.1-conical cutting pick; 1.11-tooth shank; 1.12-tooth shoulder; 1.13-toothed bar; 1.14-tapered section; 1.15-annular transition curved surface; 1.16-cemented carbide; 1.17-oval beam bending resistance; 1.18-spin-increasing groove; 1.19-ring slot; 1.2-conical pick box; 1.21-conical pick mounting hole; 1.22-separating surface; 1.3-shaft baffle ring; 2.1-flat pick; 2.2-flat pick holder; 2.21-flat pick mounting hole; 2.22-screw mounting holes; 2.3-locking screws; 3-dust fall connecting seat; 3.1-inserting grooves; 3.2-water distribution interface; 3.3-dust settling nozzle; 3.4-built-in waterway; 3.5-fixed groove; 3.6-welding the slope; 4-briquetting; 4.1-stop key; 5-cutting head; 5.1-connecting end plates; 5.2-water inlet; 5.3-water storage cavity; 5.4-water distribution hole; 5.5-slag discharging and blocking; 6-inserting tenon quickly; 6.1-side locating face; 6.2-guiding inclined plane; 7-a set screw; 8-a wear reducing surface; 9-wear resistant distributor block; 10-a liner ring; 10.1-shoulder.
Detailed Description
The embodiment provides a spray type cutting head with interchangeable conical picks and flat picks, which comprises a conical tooth assembly, a flat tooth assembly, a dust fall connecting seat 3, a pressing block 4 and a cutting head body 5; the conical tooth assembly comprises a conical cutting tooth 1.1 and a conical cutting tooth seat 1.2; the conical pick holder 1.2 is provided with a conical pick mounting hole 1.21, and the lower part is provided with a quick tenon 6; the conical cutting pick 1.1 is rotatably arranged in the conical cutting pick mounting hole 1.21 in a penetrating way; the flat tooth component comprises a flat cutting tooth 2.1, a flat cutting tooth seat 2.2 and a locking screw 2.3; the flat pick seat 2.2 is provided with a flat pick mounting hole 2.21 and a screw mounting hole 2.22, and the lower part is provided with a quick tenon 6; the flat cutting pick 2.1 is inserted into the flat cutting pick mounting hole 2.21, and the locking screw 2.3 passes through the screw mounting hole 2.22 and abuts against the screw groove of the flat cutting pick 2.1; the dust fall connecting seat 3 is welded on the cutting head body 5 and is provided with an inserting groove 3.1 matched with the fast inserting tenon 6, the bottom surface is provided with a water distribution interface 3.2, the rear part is provided with a dust fall nozzle 3.3, and a built-in water channel 3.4 communicated with the water distribution interface 3.2 and the dust fall nozzle 3.3 is arranged in the dust fall connecting seat; the pressing block 4 is used for being fixed on the dust fall connecting seat 3 after the fast tenon 6 and the inserting groove 3.1 are assembled, and closing an inserting hole of the inserting groove 3.1; the cutting head body 5 is internally provided with a connecting end plate 5.1 which is used for being connected with a cutting machine cantilever, the connecting end plate 5.1 is provided with a water inlet 5.2, the upper part of the connecting end plate 5.1 is a water storage cavity 5.3, the cavity wall above the connecting end plate 5.1 is provided with a water distribution hole 5.4 matched with a water distribution interface 3.2, the cavity wall below the connecting end plate 5.1 is provided with a deslagging hole, and the deslagging hole is internally provided with a deslagging plug 5.5.
The fast tenon 6 cooperates with the cartridge groove 3.1 of dust fall connecting seat 3, need not cut on same cutterhead body 5, welding process just can realize the quick replacement of toper pick 1.1 and flat pick 2.1, the change process is simple and convenient swift, be fit for one-man operation, the quantity of equipment operation maintainer in the pit has effectively been reduced, the toper pick cutterhead that forms and flat pick cutterhead can adapt to the exploitation of different hardness rocks or media respectively, the effect that does not change cutterhead body 5 and just can effectively enlarge the equipment working range of digging has been reached. Briquetting 4 is used for fixing on dust fall connecting seat 3 after fast tenon 6 and the assembly of cartridge groove 3.1, seals the inserted hole of cartridge groove 3.1, guarantees the reliable connection of pick box and dust fall connecting seat 3, prevents that the cutting in-process pick box from droing. Dust fall connecting seat 3 embeds waterway system, can not pass through the pick seat with the water in the water storage chamber 5.3, directly spout from dust fall nozzle 3.3 at 3 rear portions of dust fall connecting seat, reach the dust suppression purpose to can cool off the adjacent pick of arranging behind this pick simultaneously. And the slag discharging plug 5.5 seals the slag discharging hole when the cutting head works, and is taken out from the slag discharging hole when discharging slag.
Furthermore, the diameter of the water distribution interface 3.2 is larger than that of the water distribution hole 5.4, so that water in the water storage cavity 5.3 can be conveyed to the dust fall nozzle 3.3 through the water distribution interface 3.2 and the built-in water path 3.4 even if welding positioning or manufacturing errors exist, and finally sprayed out.
Furthermore, the fast tenon 6 is a T-shaped tenon, the distance between the side positioning surfaces 6.1 at two sides is gradually reduced from front to back, and the side positioning surfaces 6.1 and the back end surface are in transitional connection through a guide inclined surface 6.2; the inserting groove 3.1 is matched with the fast tenon 6. The side positioning surface 6.1 and the guide inclined surface 6.2 of the quick tenon 6 can be quickly inserted along the inserting groove 3.1, so that the automatic positioning in the inserting direction is realized. The included angle between the side positioning surfaces 6.1 at the two sides is a self-positioning angle.
Further, a press block mounting position is arranged on the dust fall connecting seat 3; the pressing block mounting position extends forwards from the insertion opening of the insertion groove 3.1 and is provided with a fixing groove 3.5; the bottom surface of the pressing block 4 is provided with a stop key 4.1 matched with the fixed groove 3.5; the fixing groove 3.5 and the stop key 4.1 are both provided with screw holes, and the fixing screw 7 penetrates through the screw holes to fix the pressing block 4 on the pressing block mounting position. The arrangement of the fixing groove 3.5 and the stop key 4.1 effectively prevents the fixing block 4 from being released from the fixing block mounting position.
Further, the side surface of the dust fall connecting seat 3 corresponding to the press block mounting position is an antifriction surface 8; the two sides of the pressing block 4 are provided with antifriction surfaces 8; the distance between the two side abrasion reducing surfaces 8 is gradually increased from front to back, a right angle is formed in the movement direction of the dust fall connecting seat 3, and the rotating working resistance of the cutting head body 5 is reduced.
Further, the bottom surface and the side surface of the dust fall connecting seat 3 are in transition connection through inward-inclined welding slope surfaces 3.6, and the dust fall connecting seat 3 can be welded to the surface of the cutting head body 5 through welding the slope surfaces 3.6.
Further, the dust fall connecting seat 3 is welded on the surface of the cutting head body 5 in the form of 1, 2, 3, 4, 6 or 8 spiral lines according to the spiral line parameters of a cylinder, a cone, a sphere or a table. The cutting head body 5 is a free combination of a cylinder, a cone, a sphere or a spherical table body, and can be a combination of the cylinder + the cone + the sphere, the cylinder + the cone + the spherical table body, the cone + the sphere, the cone + the spherical table body, the cylinder + the sphere, the cylinder + the spherical table body and the like.
Further, the conical pick 1.1 comprises an integrally formed shank 1.11, shoulder 1.12, shank 1.13 and tapered portion 1.14; the tooth handle 1.11 and the tooth bar 1.13 are both cylindrical structures; the tooth shoulder 1.12 is in a circular truncated cone structure, the bottom surface of the tooth shoulder is connected with the tooth handle 1.11, and the top surface of the tooth shoulder is connected with the tooth bar 1.13 through an annular transition curved surface 1.15; the conical part 1.14 is positioned on the toothed bar 1.13, the top of the conical part is brazed with cemented carbide 1.16, and a plurality of oval bending-resistant beams 1.17 are uniformly arranged on the circumferential surface; the oval bending-resistant beam 1.17 is arranged in a form of a small top and a big bottom, the oval profile curve of the oval bending-resistant beam 1.17 is controlled by a parameter equation (1),
wherein c is a number greater than 2;
a plurality of spin-increasing grooves 1.18 are arranged on the tooth shoulder 1.12 and the annular transition curved surface 1.15; the part of the tooth handle 1.11 extending out of the conical cutting tooth mounting hole 1.21 is provided with an annular clamping groove 1.19, and the annular clamping groove 1.19 is matched with a baffle ring 1.3 for a shaft.
The conical cutting teeth 1.1 are integrally formed by the same material, no connecting seam exists, the separation phenomenon of different materials under the action of low-frequency large-amplitude impact load is avoided, and the use reliability of the cutting teeth is improved. The oval bending-resistant beams 1.17 are uniformly distributed on the outer surface of the conical part 1.14, can effectively resist bending loads from different directions, so that the bending resistance of the conical cutting pick 1.1 is improved, the working capacity of the cutting head body 5 is improved, the convex structure can effectively resist the abrasion of coal rocks to the conical part 1.14, and the service life of the conical cutting pick 1.1 is prolonged. The tooth handle 1.11 of the conical cutting tooth 1.1 is rotatably arranged in the conical cutting tooth mounting hole 1.21 and rotates in the working process, so that the coal body or rock is efficiently cut in. When the conical cutting pick 1.1 is cut into the coal body and rotates with the cutting head body 5 to be transferred into a cutting pile, the groove wall of the rotation increasing groove 1.18 is in unilateral contact with the coal body or the cutting under the rotation action of the cutting head body 5, the torque generated in the contact promotes the conical cutting pick 1 to rotate around the axis of the cutting pick, after the previous rotation increasing groove 1.18 is rotated out of the contact area, the next rotation increasing groove 1.18 is in continuous contact with the coal body or the cutting, the conical cutting pick 1.1 is enabled to continuously rotate around the axis of the cutting pick, and the self-rotation performance of the conical cutting pick 1.1 is improved. Because the conical cutting pick 1.1 is of an integral structure, the tooth holder 1.13 and the hard alloy 1.16 brazed at the top end of the conical part 1.14 rotate along with the tooth holder, so that the conical cutting pick 1.1 is self-abraded in the cutting and chip loading processes, and the service life of the cutting pick is prolonged. The arrangement of the rotation increasing groove 1.18 on the tooth shoulder 1.12 and the annular transition curved surface 1.15 can effectively avoid the weakening of the concave structure of the rotation increasing groove 1.18 on the local material of the tooth bar 1.13, and the overall strength of the conical cutting pick 1.1 is not reduced.
Furthermore, the contact area of the front surface of the conical pick box 1.2 and the cutting chips is a separating surface 1.22 with an obtuse included angle, so that the impact abrasion of the cutting chips and other abrasive substances to the conical pick box 1.2 when the cutting head body 5 rotates can be effectively reduced; a wear-resistant distributing block 9 forming an acute angle with the horizontal direction is embedded on the separating surface 1.22, so that the cutting chips are smoothly discharged along the moving direction of the conical pick box 1.2; the wear-resistant distributing block 9 is made of hard alloy. The obtuse angle is based primarily on the angle of the cutting pick measured after wear in actual operation, and is typically not less than 90 ° and between 120 ° and 160 °. The smaller the obtuse angle, the smaller the resistance, the more significant the wear-inhibiting effect, and the better the use effect, without lowering the overall strength of the bevel-tooth carrier 2. The angle is schematically shown as 150. According to the design standard that when the cutting head cuts the rock, the linear velocity of the tooth tip (1.6 part of the hard alloy) does not exceed the cutting of the coal rock, and the reasonable range of the angle is 20-30 degrees. This angle is shown to be about 22.
Further, the conical cutting pick mounting hole 1.21 comprises a first step hole, a second step hole and a third step hole, wherein the diameters of the first step hole, the second step hole and the third step hole are sequentially reduced from front to back; the first step hole and the second step hole are internally in interference fit with a lining ring 10, so that the first step hole and the second step hole form an integral structure, the reliability of connection of the conical pick holder 1.2 and the lining ring 10 is improved, and the hardness of the lining ring 10 is greater than that of the conical pick 1; the shank 1.11 of the conical pick 1.1 is inserted into the bushing 10 and the shoulder 1.12 rests against the bushing 10. The lining ring 10 is made of high-wear-resistance alloy steel through heat treatment, when the conical cutting pick 1.1 rotates in the lining ring 10 to generate friction wear, the hardness of the lining ring 10 is higher than that of the conical cutting pick 1.1, so the wear mainly occurs on the end face of the tooth shoulder 1.12 contacting with the lining ring 10, and when the hard alloy 1.16 at the top of the conical cutting pick 1.1 or the end face contacting with the lining ring 10 fails due to wear, the vulnerable part of the conical cutting pick 1.1 can be replaced.
Further, the bottom surface of the tooth shoulder 1.12 is provided with an annular concave shoulder; the lining ring 10 is provided with a shoulder 10.1 which is matched with the concave shoulder. The tooth shoulder 1.12 and the lining ring 10 are buckled with each other through an annular conical surface, and the tooth shoulder 1.12 can rotate freely in the lining ring 10 and cannot be separated from the lining ring 10. The tooth shoulder 1.12 and the lining ring 10 are mutually contacted through annular conical surfaces, so that the contact area is effectively increased, the contact specific pressure is reduced, the abrasion is reduced, in addition, the convex shoulder-concave shoulder buckling structure can also prevent the conical cutting pick 1.1 from shaking in the conical cutting pick mounting hole 1.21 due to the assembly clearance or the conical cutting pick 1.1 caused by the abrasion of the cylindrical surface of the tooth handle 1.11, and the conical cutting pick 1.1 can be effectively stabilized in the cutting process.
Furthermore, the convex shoulder 10.1 is of a double-conical-surface annular structure, the included angle between the conical surfaces on the inner side and the outer side and the horizontal plane is 120 degrees, normal phase loads acting on the conical cutting tooth 1 in the rock breaking process can be evenly distributed on the conical surfaces on the inner side and the outer side, so that the contact specific pressure of the convex shoulder 10.1 and the concave shoulder is reduced, and the normal phase loads acting on the conical cutting tooth 1.1 in the rock breaking process are transferred to the conical cutting tooth seat 1.2 through the lining ring 10 by the equilateral triangle formed in the force decomposition process.
Furthermore, a wear-resistant distributing block 9 forming an acute angle with the horizontal direction is embedded in a contact area of the front surface of the flat pick seat 2.2 and the chips, so that the chips are smoothly discharged along the moving direction of the flat pick seat 2.2.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (8)
1. A spray type cutting head with interchangeable conical cutting teeth and flat cutting teeth is characterized by comprising a conical tooth assembly, a flat tooth assembly, a dust fall connecting seat, a pressing block and a cutting head body;
the conical tooth assembly comprises a conical cutting tooth and a conical cutting tooth seat;
the conical pick seat is provided with a conical pick mounting hole, and the lower part of the conical pick seat is provided with a quick tenon;
the conical cutting pick is rotatably arranged in the conical cutting pick mounting hole in a penetrating manner;
the flat tooth assembly comprises a flat cutting tooth, a flat cutting tooth seat and a locking screw;
the flat pick seat is provided with a flat pick mounting hole and a screw mounting hole, and the lower part of the flat pick seat is provided with a quick inserting tenon;
the flat cutting pick is inserted into the flat cutting pick mounting hole, and the locking screw passes through the screw mounting hole and abuts against the screw groove of the flat cutting pick;
the dust fall connecting seat is welded on the cutting head body and is provided with an inserting groove matched with the quick inserting tenon, the bottom surface of the dust fall connecting seat is provided with a water distribution interface, the rear part of the dust fall connecting seat is provided with a dust fall nozzle, and a built-in water path communicated with the water distribution interface and the dust fall nozzle is arranged in the dust fall connecting seat;
the pressing block is used for being fixed on the dust-settling connecting seat after the quick insertion tenon and the insertion groove are assembled, and closing an insertion hole of the insertion groove;
the cutting head is internally provided with a connecting end plate which is used for being connected with a cutting machine cantilever, a water inlet is arranged on the connecting end plate, a water storage cavity is arranged above the connecting end plate, a water distribution hole matched with a water distribution interface is arranged on the cavity wall above the connecting end plate, a slag discharge hole is arranged on the cavity wall below the connecting end plate, and a slag discharge plug is arranged in the slag discharge hole.
2. The spray type cutting head with the interchangeable conical cutting pick and flat cutting pick according to claim 1, wherein the quick insertion tenon is a T-shaped tenon, the distance between the side positioning surfaces on two sides is gradually reduced from front to back, and the side positioning surfaces are in transitional connection with the back end surface through guide inclined surfaces;
the inserting groove is matched with the quick inserting tenon.
3. The spray type cutter head with the interchangeable conical and flat picks according to claim 2, wherein the dust fall connection seat is provided with a pressure block mounting location;
the pressing block mounting position extends forwards from the insertion opening of the insertion groove and is provided with a fixing groove;
the bottom surface of the pressing block is provided with a stop key matched with the fixing groove;
the fixing groove and the stop key are both provided with screw holes, and the fixing screw penetrates through the screw holes to fix the pressing block on the pressing block mounting position.
4. The spray type cutter head with the interchangeable conical pick and flat pick of claim 3, wherein the side surface of the dust fall connecting seat corresponding to the press block mounting position is an anti-wear surface;
the two sides of the pressing block are antifriction surfaces;
the distance between the wear reducing surfaces on the two sides is gradually increased from front to back.
5. The spray type cutter head with interchangeable conical and flat picks of claim 4, wherein the dust fall connection block is transitionally connected at its bottom and side surfaces by an inwardly angled weld ramp.
6. The spray type cutter head interchangeable with a conical pick and a flat pick of claim 1, wherein the conical pick comprises an integrally formed shank, shoulder, shank, and tapered portion;
the tooth handle and the tooth bar are both cylindrical structures;
the tooth shoulder is of a circular truncated cone structure, the bottom surface of the tooth shoulder is connected with the tooth handle, and the top surface of the tooth shoulder is connected with the tooth rod through an annular transition curved surface;
the conical part is positioned on the toothed bar, hard alloy is brazed at the top of the conical part, and a plurality of oval anti-bending beams are uniformly arranged on the circumferential surface of the conical part;
the oval bending-resistant beam is arranged in a mode of small top and big bottom, the oval outline curve of the oval bending-resistant beam is controlled by a parameter equation (1),
wherein c is a number greater than 2;
a plurality of rotation increasing grooves are formed in the tooth shoulders and the annular transition curved surface;
the part of the tooth handle extending out of the conical cutting tooth mounting hole is provided with an annular clamping groove, and the annular clamping groove is matched with the baffle ring for the shaft.
7. The spray type cutting head interchangeable with a conical pick and a flat pick of claim 6, wherein the region of the front face of the conical pick holder in contact with chips is a parting plane angled at an obtuse angle;
a wear-resistant material distributing block forming an acute angle with the horizontal direction is embedded on the separating surface;
the wear-resistant distributing block is made of hard alloy.
8. The spray type cutting head interchangeable with a conical pick and a flat pick of claim 1, wherein the front face of the flat pick holder, which is in contact with chips, is embedded with a wear resistant distributor block at an acute angle to the horizontal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020259175.5U CN211692460U (en) | 2020-03-05 | 2020-03-05 | Spray type cutting head with interchangeable conical cutting pick and flat cutting pick |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020259175.5U CN211692460U (en) | 2020-03-05 | 2020-03-05 | Spray type cutting head with interchangeable conical cutting pick and flat cutting pick |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211692460U true CN211692460U (en) | 2020-10-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020259175.5U Expired - Fee Related CN211692460U (en) | 2020-03-05 | 2020-03-05 | Spray type cutting head with interchangeable conical cutting pick and flat cutting pick |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211692460U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117552784A (en) * | 2024-01-11 | 2024-02-13 | 大同市同华矿机制造有限责任公司 | Cutting tool bit and cutting drum |
-
2020
- 2020-03-05 CN CN202020259175.5U patent/CN211692460U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117552784A (en) * | 2024-01-11 | 2024-02-13 | 大同市同华矿机制造有限责任公司 | Cutting tool bit and cutting drum |
| CN117552784B (en) * | 2024-01-11 | 2024-03-22 | 大同市同华矿机制造有限责任公司 | Cutting tool bit and cutting drum |
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