CN217026611U

CN217026611U - Milling device of pavement milling machine

Info

Publication number: CN217026611U
Application number: CN202220237951.0U
Authority: CN
Inventors: 郑孙炳
Original assignee: Ruian Fly Machine Parts Co ltd
Current assignee: Ruian Fly Machine Parts Co ltd
Priority date: 2022-01-28
Filing date: 2022-01-28
Publication date: 2022-07-22
Anticipated expiration: 2032-01-28

Abstract

The milling device of the pavement milling machine comprises a tooth holder, a tool apron and a tool, wherein the lower end surface of the tooth holder is a connecting cambered surface connected with a milling drum barrel, and the upper side of the tooth holder is provided with an obliquely arranged installation cavity; the tool apron comprises a base seat and a handle, and the handle of the tool apron is arranged in the mounting cavity of the tooth seat; the base body seat is provided with an obliquely arranged assembling hole, a cutter sleeve is detachably connected in the assembling hole, and a mounting hole is formed in the cutter sleeve along the axial direction of the cutter sleeve; the cutter comprises a cutter body, a cutter handle is arranged on the lower end face of the cutter body, a circular spring pipe is sleeved on the outer surface of the cutter handle, the cutter is arranged in the mounting hole through the cutter handle and the circular spring pipe, and a cutter head is detachably connected to the top of the cutter body; the utility model has the advantages of simple structure, reasonable design, long service life, stable structure, convenient assembly, sustainable use of the base body of the tool apron, independent replacement of the tool bit or the tool body, effective reduction of waste of alloy materials and the like.

Description

Milling device of pavement milling machine

Technical Field

The utility model relates to a pavement milling machine, in particular to a milling device of the pavement milling machine.

Background

The road milling machine is used as a main device for road maintenance, and is used for milling and crushing an asphalt (or cement) road surface or a roadbed which influences normal use of a highway. When the pavement milling machine works, the milling rotor arranged at the lower part of the pavement milling machine rotates to drive a plurality of milling cutter heads fixedly arranged on the rotor, the milling cutter heads cut and crush the pavement or the roadbed to be repaired, the pavement milling machine simultaneously removes cutting products, and then the pavement or the roadbed is paved again to finish the maintenance of the highway.

The cutter head and the cutter body of the existing milling cutter are mostly connected into a whole in a welding mode, a cutter tip is easily damaged when a road is planed, the cutter head is influenced to work, milling teeth lose functions and waste is caused, in addition, when some road surfaces needing deep milling are operated, the surface of the cutter body is easily abraded due to different hardness of the cutter head and the cutter body, so that the cutter head can be used and the cutter body is scrapped, and the cutter head and the cutter body are welded into a whole, so that the cutter head is scrapped, and the use cost is increased; the milling cutter is arranged on the tooth holder through the milling cutter holder, the milling cutter holder supports the milling cutter in work, and meanwhile the milling cutter holder is severely extruded, strongly abraded and impacted, and the use working condition is very complex and severe, so that the milling cutter holder is used for supporting one end face of the milling cutter, and the end face is easily abraded in use to cause the milling cutter holder to be scrapped, but under most conditions, the abrasion loss of the scrapped milling cutter holder is only about 10% of the whole weight, and the great waste of alloy materials and the added value of the alloy materials is caused.

SUMMERY OF THE UTILITY MODEL

The milling device of the pavement milling machine is simple in structure, reasonable in design, long in service life, stable in structure, convenient to assemble, capable of continuously using a tool apron matrix, capable of independently replacing a tool bit or a tool body and capable of effectively reducing waste of alloy materials.

The technical scheme adopted by the utility model for solving the technical problem is as follows: the milling device of the pavement milling machine comprises a tooth holder, a tool apron and a tool, wherein the lower end surface of the tooth holder is a connecting cambered surface connected with a milling drum barrel, and the upper side of the tooth holder is provided with an obliquely arranged installation cavity; the cutter holder comprises a base seat and a handle, and the handle of the cutter holder is arranged in the mounting cavity of the tooth holder; the cutter holder is provided with an assembly hole which is obliquely arranged, a cutter sleeve is detachably connected in the assembly hole, and a mounting hole is formed in the cutter sleeve along the axial direction of the cutter sleeve; the cutter comprises a cutter body, a cutter handle is arranged on the lower end face of the cutter body, a round spring pipe is sleeved on the outer surface of the cutter handle, the cutter is arranged in the mounting hole through the cutter handle and the round spring pipe, and a cutter head is detachably connected to the top of the cutter body.

Preferably, still be equipped with the connecting hole with the installation cavity intercommunication on the toothholder, the handle sets up in the downside of base member seat and handle integrated into one piece, be equipped with the joint groove on the lateral wall of handle, be equipped with joint spare on the toothholder, joint spare passes the connecting hole butt on the joint groove of handle.

Preferably, the upper end outer ring of the cutter sleeve is provided with an annular ring, the cutter sleeve and the annular ring are integrally processed and formed by hard alloy, the upper end faces of the cutter sleeve and the annular ring are provided with wear-resistant coatings, and the wear-resistant coatings are one wear-resistant layer deposited on the upper end faces of the cutter sleeve and the annular ring by adopting a plasma arc self-fluxing alloy powder spray welding technology.

Preferably, the upper end face of the base body seat is provided with a plurality of positioning blocks, positioning grooves are formed in the positions, corresponding to the positioning blocks, of the lower surface of the annular ring of the cutter sleeve, first annular grooves are formed in the outer wall of the cutter sleeve, pin holes are formed in the base body seat, the middle of each pin hole is communicated with the corresponding assembly hole, a bolt is arranged in each pin hole, the length of each bolt is smaller than or equal to that of each through hole, when the base body seat is assembled with the cutter sleeve, the pin holes of the base body seat are communicated with the corresponding first annular grooves of the cutter sleeve, and the middle of each bolt is located between the corresponding pin hole and the corresponding first annular groove.

Preferably, a first threaded hole is formed in the side wall of the base seat, a second threaded hole is formed in the side wall of the cutter sleeve, a fastening bolt is arranged between the first threaded hole of the base seat and the second threaded hole of the cutter sleeve, a first extending groove is formed in the side wall of the base seat, the first threaded hole is formed in the first extending groove, and the head end of the fastening bolt is located in the first extending groove when the base seat and the cutter sleeve are assembled.

Preferably, the base body seat is provided with a cutter unloading hole at the lower end of the assembling hole, the diameter of the cutter unloading hole is larger than that of the assembling hole, the lower end face of the cutter sleeve penetrates through the assembling hole to extend into the cutter unloading hole, a clamping ring is arranged on the outer ring of the lower end face of the cutter sleeve, and a check ring is arranged between the clamping ring and the inner end face of the cutter unloading hole at the lower end of the cutter sleeve.

Preferably, the knife handle and the knife body are arranged in an integrated structure, a second annular groove is formed in the knife handle and comprises an upper groove wall and a lower groove wall, the upper groove wall and the bottom surface of the second annular groove are arranged at an angle of 130-140 degrees, the lower groove wall and the bottom surface of the second annular groove are perpendicular to each other, the bottom surface of the second annular groove and the connection between the upper groove wall and the lower groove wall are both in a fillet structure, a clamping strip which is bent towards the second annular groove is arranged on the circular spring pipe relative to the second annular groove, the clamping strip is connected with the circular spring pipe through a connecting strip, and the connecting strip is parallel to the upper groove wall of the second annular groove.

Preferably, the top of the cutter body is provided with a cutter tip platform, the end face of the cutter tip platform is provided with a slot hole, the cutter tip platform is arranged in the slot hole, the bottom of the slot hole is provided with an inserting strip, the bottom end of the cutter head is provided with an inserting slot corresponding to the inserting strip, the inserting strip is inserted into the inserting slot, the side wall of the cutter body is provided with two fixing holes, the fixing holes are symmetrically arranged at two sides of the inserting strip, a second extending groove is arranged at the position, corresponding to the fixing hole, of the side wall of the cutter body, the fixing holes are arranged in the second extending groove, and the fixing holes and the side wall of the cutter body are perpendicular to each other.

Preferably, the side wall of the cutter head is provided with third threaded holes corresponding to the two fixing holes, the two fixing holes and the third threaded holes are internally provided with a fixing bolt, and the cutter head is fixedly connected with the cutter body through the fixing bolt.

The beneficial effects of the utility model are:

1. the cutter holder is characterized in that the base seat arranged on the tooth holder and the cutter sleeve used for supporting the cutter are of a split structure, the worn and scrapped cutter sleeve can be detached from the cutter holder base body and replaced by a new cutter sleeve, the loss of the cutter holder base body can be reduced, the cutter sleeve is formed by processing hard alloy, and the end face of the cutter sleeve is provided with a wear-resistant coating, so that the wear resistance and the service life of the cutter sleeve are greatly enhanced;

2. the cutter comprises a base body seat, a cutter sleeve, a cutter head, a base, a cutter head, a base, a cutter head, a base, a cutter head, a base, a cutter head, a base, a cutter head, a base, a cutter head, a base;

3. the cutter head and the cutter body are inserted and connected through the inserting strips and the inserting grooves, meanwhile, the cutter head is fixedly connected through the fixing bolt, the phenomenon that the cutter head becomes loose when in working is effectively avoided, when the cutter head or the cutter body is worn and scrapped greatly, the fixing bolt is taken down, the cutter head is taken out of the slotted hole of the cutter body, the cutter head or the cutter body is replaced independently, additional waste is avoided, and practical cost is saved;

4. through set up the ring channel on the handle of a knife, the last cell wall of ring channel, lower cell wall adopt 130 ~ 140 respectively to set up with perpendicular the setting, set up the gib block on circular spring pipe, with the connecting strip that the last cell wall of ring channel is parallel to each other, when using for the power that circular spring pipe acted on the handle of a knife directly acts on the last cell wall of ring channel and the connecting strip of circular spring pipe, circular spring pipe opening is strikeed and is opened when having avoided the operation, has further improved the life who mills the gear.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is an enlarged view taken at A of FIG. 1 in accordance with the present invention;

FIG. 3 is an enlarged view of FIG. 1 at B of the present invention;

FIG. 4 is a schematic view of the base and handle of the present invention;

FIG. 5 is a schematic view of the construction of the sheath of the present invention;

FIG. 6 is a schematic view of the structure of the knife body and knife handle of the present invention;

fig. 7 is a schematic view of a tool tip of the present invention.

In the figure: 1. a tooth holder; 101. connecting the cambered surface; 102. a mounting cavity; 103. connecting holes; 104. a clamping piece; 2. a tool apron; 201. a base seat; 202. a handle; 203. assembling holes; 204. a knife sheath; 205. mounting holes; 206. a clamping groove; 207. an annular ring; 208. a wear-resistant coating; 209. positioning a block; 210. positioning a groove; 211. a first annular groove; 212. a pin hole; 213. a bolt; 214. a first threaded hole; 215. a second threaded hole; 216. fastening a bolt; 217. a first extension groove; 218. a cutter unloading hole; 219. a snap ring; 220. a retainer ring; 3. a cutter; 301. a cutter body; 302. a knife handle; 303. a circular spring tube; 304. a cutter head; 305. a second annular groove; 306. an upper tank wall; 307. a lower tank wall; 308. clamping the strip; 309. a connecting strip; 310. a nose platform; 311. a slot; 312. cutting; 313. inserting slots; 314. a fixing hole; 315. a second extension groove; 316. a third threaded hole; 317. and (5) fixing the bolt.

Detailed Description

The technical solution of the present invention is further specifically described below by using specific embodiments and with reference to the accompanying drawings.

The embodiment is as follows:

the milling device of the road milling machine shown in fig. 1 to 7 comprises a toothholder 1, a tool apron 2 and a tool 3, wherein the lower end surface of the toothholder 1 is a connecting arc surface 101 connected with a milling drum, and the upper side of the toothholder 1 is provided with an obliquely arranged installation cavity 102; the tool apron 2 comprises a base 201 and a handle 202, and the handle 202 of the tool apron 2 is arranged in the mounting cavity 102 of the tooth holder 1; still be equipped with the connecting hole 103 with installation cavity 102 intercommunication on the toothholder 1, handle 202 sets up in the downside of base member seat 201 and handle 202 integrated into one piece machine-shaping, be equipped with joint groove 206 on the lateral wall of handle 202, be equipped with joint spare 104 on the toothholder 1, joint spare 104 passes connecting hole 103 butt on the joint groove 206 of handle 202.

An assembly hole 203 which is obliquely arranged is formed in the base body seat 201, a cutter sleeve 204 is detachably connected in the assembly hole 203, and a mounting hole 205 is formed in the cutter sleeve 204 along the axial direction of the cutter sleeve; an annular ring 207 is arranged on the outer ring of the upper end of the cutter sleeve 204, the cutter sleeve 204 and the annular ring 207 are integrally formed by hard alloy, a wear-resistant coating 208 is arranged on the upper end surfaces of the cutter sleeve 204 and the annular ring 207, and the wear-resistant coating 208 is a wear-resistant layer deposited on the upper end surfaces of the cutter sleeve 204 and the annular ring 207 by adopting a plasma arc self-fluxing alloy powder spray welding technology; the upper end surface of the base 201 is provided with a plurality of positioning blocks 209, the lower surface of the annular ring 207 of the knife pouch 204 is provided with positioning grooves 210 corresponding to the positioning blocks 209, the outer wall of the knife pouch 204 is provided with a first annular groove 211, the base 201 is provided with pin holes 212, the middle parts of the pin holes 212 are communicated with the assembling holes 203, the pin holes 212 are internally provided with pins 213, the length of the pins 213 is less than or equal to that of the through holes, when the base 201 is assembled with the knife pouch 204, the pin holes 212 of the base 201 are communicated with the first annular groove 211 of the knife pouch 204, and the middle parts of the pins 213 are positioned between the pin holes 212 and the first annular groove 211; a first threaded hole 214 is formed in the side wall of the base seat 201, a second threaded hole 215 is formed in the side wall of the cutter sleeve 204, a fastening bolt 216 is arranged between the first threaded hole 214 of the base seat 201 and the second threaded hole 215 of the cutter sleeve 204, a first extending groove 217 is formed in the side wall of the base seat 201, the first threaded hole 214 is arranged in the first extending groove 217, and the head end of the fastening bolt 216 is located in the first extending groove 217 when the base seat 201 and the cutter sleeve 204 are assembled; the base body seat 201 is provided with a cutter unloading hole 218 at the lower end of the assembly hole 203, the diameter of the cutter unloading hole 218 is larger than that of the assembly hole 203, the lower end face of the cutter sleeve 204 penetrates through the assembly hole 203 and extends into the cutter unloading hole 218, the outer ring of the lower end face of the cutter sleeve 204 is provided with a clamping ring 219, and a retainer ring 220 is arranged between the clamping ring 219 and the inner end face of the cutter unloading hole 218 at the lower end of the cutter sleeve 204.

The cutting tool 3 comprises a tool body 301, a tool shank 302 is arranged on the lower end face of the tool body 301, a circular spring tube 303 is sleeved on the outer surface of the tool shank 302, the cutting tool 3 is arranged in the mounting hole 205 through the tool shank 302 and the circular spring tube 303, and a tool bit 304 is detachably connected to the top of the tool body 301; the knife handle 302 and the knife body 301 are integrally arranged, a second annular groove 305 is formed in the knife handle 302, the second annular groove 305 comprises an upper groove wall 306 and a lower groove wall 307, the upper groove wall 306 and the bottom surface of the second annular groove 305 are arranged at an angle of 130-140 degrees, the lower groove wall 307 and the bottom surface of the second annular groove 305 are perpendicular to each other, the bottom surface of the second annular groove 305, the connection parts between the upper groove wall 306 and the lower groove wall 307 and the connection parts between the bottom surface of the second annular groove 305 and the bottom surface of the second groove 306 are all in a fillet structure, a clamping strip 308 which is bent towards the second annular groove 305 is arranged on the circular spring tube 303 relative to the second annular groove 305, the clamping strip 308 is connected with the circular spring tube 303 through a connecting strip 309, and the connecting strip 309 is parallel to the upper groove wall 306 of the second annular groove 305; the top of the knife body 301 is provided with a knife tip platform 310, the end surface of the knife tip platform 310 is provided with a slot hole 311, the knife tip platform is arranged in the slot hole 311, the bottom of the slot hole 311 is provided with an insert 312, the bottom end of the knife head 304 is provided with an insert slot 313 corresponding to the insert slot 312, the insert slot 312 is inserted in the insert slot 313, the side wall of the knife body 301 is provided with two fixing holes 314, the fixing holes 314 on the two sides are symmetrically arranged on the two sides of the insert slot 312, the side wall of the knife body 301 is provided with a second extending slot 315 corresponding to the fixing holes 314, the fixing holes 314 are arranged in the second extending slot 315, and the fixing holes 314 and the side wall of the knife body 301 are arranged perpendicular to each other; third threaded holes 316 are formed in the side wall of the cutter head 304 corresponding to the two fixing holes 314, a fixing bolt 317 is arranged in each of the two fixing holes 314 and the third threaded holes 316, and the cutter head 304 is fixedly connected with the cutter body 301 through the fixing bolt 317.

The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the spirit of the utility model as set forth in the claims.

Claims

1. The utility model provides a milling device of road surface milling machine, includes toothholder (1), blade holder (2), cutter (3), its characterized in that: the lower end face of the tooth holder (1) is a connecting arc face (101) connected with a milling drum, and an obliquely arranged installation cavity (102) is arranged on the upper side of the tooth holder (1); the tool apron (2) comprises a base body seat (201) and a handle (202), and the handle (202) of the tool apron (2) is arranged in an installation cavity (102) of the tooth holder (1); an assembling hole (203) which is obliquely arranged is formed in the base body seat (201), a cutter sleeve (204) is detachably connected in the assembling hole (203), and a mounting hole (205) is formed in the cutter sleeve (204) along the axial direction of the cutter sleeve; cutter (3) include cutter body (301), the lower terminal surface of cutter body (301) is equipped with handle of a knife (302), handle of a knife (302) surface cover is equipped with circular spring pipe (303), cutter (3) set up in mounting hole (205) through handle of a knife (302), circular spring pipe (303), the top of cutter body (301) can be dismantled and be connected with tool bit (304).

2. The milling device of a road milling machine as claimed in claim 1, characterized in that: still be equipped with connecting hole (103) with installation cavity (102) intercommunication on toothholder (1), handle (202) set up in the downside of base member seat (201) and handle (202) integrated into one piece, be equipped with joint groove (206) on the lateral wall of handle (202), be equipped with joint spare (104) on toothholder (1), joint spare (104) pass connecting hole (103) butt on joint groove (206) of handle (202).

3. The milling device of a road milling machine as claimed in claim 1, characterized in that: the utility model discloses a knife pouch, including knife pouch (204), annular ring (207), knife pouch (204) and annular ring (207) are by carbide integrated into one piece, be equipped with wear-resistant coating (208) on the up end of knife pouch (204) and annular ring (207), wear-resistant coating (208) are for adopting plasma arc self-fluxing nature alloy powder spray welding technique at the one deck wear-resistant coating that the up end of knife pouch (204) and annular ring (207) melts and apply.

4. The milling device of a road milling machine as claimed in claim 1, characterized in that: the utility model discloses a cutter sleeve, including base member seat (201), cutter sleeve (204), pinhole seat (201), locating piece (209), locating groove (210) are located to be equipped with to annular ring (207) lower surface of cutter sleeve (204), first ring channel (211) have been seted up on the outer wall of cutter sleeve (204), be equipped with pinhole (212) on base member seat (201), the middle part and the equipment hole (203) intercommunication of pinhole (212), be equipped with bolt (213) in pinhole (212), the length of bolt (213) is less than or equal to the length of through-hole, when base member seat (201) and cutter sleeve (204) assemble, pinhole (212) and first ring channel (211) intercommunication of cutter sleeve (204) of base member seat (201), the middle part of bolt (213) is located between pinhole (212) and first ring channel (211).

5. The milling device of a road milling machine as claimed in claim 4, characterized in that: be equipped with first screw hole (214) on the lateral wall of base member seat (201), be equipped with second screw hole (215) on the lateral wall of broach shell (204), be equipped with fastening bolt (216) between first screw hole (214) of base member seat (201) and second screw hole (215) of broach shell (204), be equipped with first extending groove (217) on the lateral wall of base member seat (201), first screw hole (214) set up in first extending groove (217), the head end of fastening bolt (216) is located first extending groove (217) when base member seat (201) and broach shell (204) equipment.

6. The milling device of a road milling machine as claimed in claim 5, characterized in that: base member seat (201) is equipped with at the lower extreme of equipment hole (203) and unloads sword hole (218), the diameter of unloading sword hole (218) is greater than the diameter of equipment hole (203), the lower terminal surface of broach shell (204) passes equipment hole (203) and extends to unload sword hole (218) in and the outer lane of terminal surface is equipped with snap ring (219) down, the lower extreme of broach shell (204) is equipped with retaining ring (220) between snap ring (219) and the inner terminal surface of unloading sword hole (218).

7. The milling device of a road milling machine as claimed in claim 1, characterized in that: the knife handle (302) and the knife body (301) are arranged in an integrated structure, a second annular groove (305) is arranged on the knife handle (302), the second annular groove (305) comprises an upper groove wall (306) and a lower groove wall (307), the upper groove wall (306) and the bottom surface of the second annular groove (305) are arranged at an angle of 130-140 degrees, the lower groove wall (307) and the bottom surface of the second annular groove (305) are arranged perpendicular to each other, the joints between the bottom surface of the second annular groove (305) and the upper groove wall (306) and the lower groove wall (307) adopt a fillet structure, a clamping strip (308) bent towards the second annular groove (305) is arranged on the circular spring tube (303) opposite to the second annular groove (305), the clamping strip (308) is connected with the circular spring tube (303) through a connecting strip (309), the connecting strip (309) and the upper groove wall (306) of the second annular groove (305) are parallel to each other.

8. The milling device of a road milling machine as claimed in claim 1, characterized in that: the top of cutter body (301) is equipped with knife tip platform (310), the terminal surface of knife tip platform (310) is equipped with slotted hole (311), set up in slotted hole (311), the bottom of slotted hole (311) is equipped with cutting slips (312), the bottom of tool bit (304) corresponds cutting slips (312) department and is equipped with slot (313), cutting slips (312) are pegged graft in slot (313), be equipped with two fixed orificess (314) on the lateral wall of cutter body (301), both sides fixed orifices (314) symmetry sets up in the both sides of cutting slips (312), the lateral wall of cutter body (301) corresponds fixed orifices (314) department and is equipped with second extension groove (315), fixed orifices (314) set up in second extension groove (315), the fixed orifices (314) set up with the lateral wall of cutter body (301) mutually perpendicular.

9. The milling device of a road milling machine as claimed in claim 8, characterized in that: the side wall of the cutter head (304) is provided with third threaded holes (316) corresponding to the two fixing holes (314), two fixing holes (314) and the third threaded holes (316) are internally provided with a fixing bolt (317), and the cutter head (304) is fixedly connected with the cutter body (301) through the fixing bolt (317).