CN109763817B - Heading machine cutting head with changeable line cutting distance - Google Patents
Heading machine cutting head with changeable line cutting distance Download PDFInfo
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- CN109763817B CN109763817B CN201910151366.1A CN201910151366A CN109763817B CN 109763817 B CN109763817 B CN 109763817B CN 201910151366 A CN201910151366 A CN 201910151366A CN 109763817 B CN109763817 B CN 109763817B
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Abstract
The utility model provides a changeable entry driving machine cutting head of line cutting distance, includes cutting motor, planetary reducer, expansion portion, cutting head and pneumatic cylinder subassembly, cutting head input links to each other with expansion portion output, and expansion portion input links to each other with planetary reducer output, and planetary reducer input links to each other with cutting motor output, be provided with the pneumatic cylinder subassembly between expansion portion and the cutting motor; according to the invention, the cutting head is divided into a plurality of sections, the longitudinal extension of the length of the cutting head can be realized through the large spline shaft and the hydraulic cylinder assembly at the rear end, and the distance in the longitudinal direction of the cutting pick is shortened when the cutting head cuts harder rock, so that the heading machine has a smaller line cutting distance; when the cutting head cuts soft rock or coal, the distance in the longitudinal direction of the cutting head can be prolonged, so that the heading machine has a larger line cutting distance to adapt to the cutting working conditions of the relevant soft rock and coal, and the yaw speed is properly increased to improve the working efficiency of the heading machine.
Description
Technical Field
The invention belongs to the technical field of mining machinery, and particularly relates to a variable-line-distance heading machine cutting head.
Background
The main equipment of tunnel excavation during the entry driving machine is in order to guarantee the reliable cutting of entry driving machine, and the cutting head generally adopts lower yaw rate in order to reduce the cutting depth of every pick when cutting harder rock, reduces whole atress. In order to improve the working efficiency, the yaw rate of the heading machine is generally improved when soft rock or coal roadway is cut, but the cutting pick line distance of a cutting head of the heading machine is not necessarily matched with the cutting pick line distance, so that the energy consumption is increased sharply. Therefore, after the development machine is designed, the development machine can only work in mining areas with similar working conditions, and has no universality. The variable-line-cutting-distance heading machine cutting head is designed for enabling the heading machine cutting head to have larger adaptability, higher working efficiency and the cutting performance to be exerted to the greatest extent. The cutting head body adopts split type design, and the longitudinal extension and retraction of the cutting head body are realized through hydraulic drive by the internal stepped spline shaft, so that the change of the cutting line distance of a part of cutting teeth and the length of the cutting head is realized. Shortening to guarantee the cutting head reliability when cutting hard rock, elongating to increase the cutting area when cutting soft rock or coal roadway, improving work efficiency. The cutting head can adapt to various working conditions and has stronger engineering application value.
Disclosure of Invention
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides a changeable entry driving machine cutting head of line cutting distance, includes cutting motor, planetary reducer, expansion portion, cutting head and pneumatic cylinder subassembly, cutting head input links to each other with expansion portion output, and expansion portion input links to each other with planetary reducer output, and planetary reducer input links to each other with cutting motor output, be provided with the pneumatic cylinder subassembly between expansion portion and the cutting motor;
the cutting head comprises an I-section end baffle ring, an I-section head body, an II-section limit baffle, an III-section end baffle ring, an III-section head body, an III-section limit baffle plate, a V-section end baffle ring, an IV-section head body, an IV-section limit baffle plate, a V-section end baffle ring, a V-section end baffle plate, a VI-section end baffle ring, a VI-section head body, a VI-section limit baffle plate, a VII-section end baffle ring, a VII-section head body sleeve, a VII-section head body and a cutting pick, the VII-section head body sleeve and the VII-section end baffle ring form a cutting head VII-section assembly, the VII-section head body sleeve outer circle sleeve is provided with a VII-section head body, the tail end of the VII-section head body sleeve is connected with the VII-section end baffle ring, the VI-section head body and the VI-end limit baffle plate form a cutting head VI-section assembly, the VI-section head end is connected with the VI-section limit baffle plate, the tail end sleeve is connected with the cutting head assembly, the V-section head body, the V-section end baffle ring and the V-section limit baffle plate form a cutting head V-section assembly, the head end of the V-section head body is connected with the V-section limit baffle plate, the tail end of the V-section head body is connected with the V-section end baffle ring, the head end of the cutting head V-section assembly is connected with the tail end of the cutting head VI-section assembly, the head end of the IV-section head body, the IV-section limit baffle plate and the IV-section end baffle plate form a cutting head IV-section assembly, the head end of the IV-section head body is connected with the IV-section end baffle plate, the head end of the cutting head IV-section assembly is connected with the tail end of the cutting head V-section assembly, the head end of the III-section head body, the III-section end baffle plate and the III-section end baffle plate form a cutting head III-section assembly, the head end of the III-section body is connected with the III-section end baffle ring, the head end of the IV-section assembly is connected with the tail end of the cutting head III-section assembly, the cutting head comprises a cutting head body, a cutting head I, a cutting head VII, a cutting head VI, a cutting head V, a cutting head IV, a cutting head III, a cutting head II and a cutting head I, wherein the cutting head II is formed by a cutting head body, a cutting head II end baffle ring and a cutting head II limiting baffle plate, the cutting head body head end is connected with the cutting head II, the cutting head II is formed by a cutting head body and a cutting head I end baffle ring, the cutting head I is formed by a cutting head body and a cutting head I, the cutting head I is connected with the cutting head I, the cutting head II, the cutting head V, the cutting head IV, the cutting head III, the cutting head II and the cutting head I are formed by a cutting head body, and cutting picks are arranged on the outer side wall of the cutting head body;
the telescopic part comprises a protection sleeve, a fixing sleeve, a telescopic sleeve, a spline sleeve, a large spline shaft, a protection sleeve cantilever, a roller bearing I, a double-row tapered roller bearing I, a telescopic sleeve large end cover, an O-shaped ring, an oil seal and an end cover, wherein the spline sleeve is arranged on the outer circle sleeve of a first shaft section of the large spline shaft, a second shaft section and a fourth shaft section of the large spline shaft are respectively connected with the telescopic sleeve through the roller bearing I and the double-row tapered roller bearing, the telescopic sleeve is positioned on the inner side part of the cutting head and is connected with the telescopic sleeve large end cover, the telescopic sleeve large end cover is sleeved on the fifth shaft section of the large spline shaft, the fixing sleeve is sleeved on the outer end of the telescopic sleeve, the inner end of the head is arranged between the fixing sleeve and the I-section end baffle ring, the protection sleeve is arranged on the outer circle sleeve, the protection sleeve is provided with the protection sleeve cantilever, the telescopic part is connected with the output shaft of the planetary reducer through the spline sleeve, the flange end of the fixing sleeve is fixedly mounted through a bolt, the fifth shaft section of the large spline shaft is connected with the head body of the large spline shaft through the spline sleeve, and the head body of the sixth shaft section of the large spline shaft is fixedly mounted through the bolt.
The planetary reducer comprises a reducer shell, a reducer end cover, a bearing end cover, a first-stage planetary gear, a first-stage planetary shaft, a first-stage sun shaft, a first-stage planetary disc, a coupler, a ball bearing I, a gear ring, a roller bearing II, a tapered roller bearing, a ball bearing II, an output shaft, a second-stage sun shaft, a second-stage planetary disc, a second-stage planetary shaft, a second-stage planetary gear, a ball bearing III, a ball bearing IV and a support frame, wherein one end of a flange end of the reducer shell is connected with a flange end of a cutting motor, the other end of the reducer shell is welded with the reducer end cover, one end of the first-stage sun shaft is connected with the output shaft of the cutting motor through the coupler, the other end of the first-stage sun shaft penetrates through the ball bearing I, an outer ring of the ball bearing I is fixedly arranged with an inner hole of the support frame, and the optical axis part of the other end of the first-stage sun shaft is connected with one end of the second-stage sun shaft through the ball bearing III, the other end of the secondary sun shaft is connected with an output shaft through a ball bearing IV, a primary planetary disc is sleeved on the outer circle of the part of the secondary sun shaft, which is close to the primary sun shaft, the primary planetary disc is connected with one end of the primary planet shaft through an inner hole on the primary planetary disc, the other end of the primary planet shaft is connected with the primary planet wheel through a tapered roller bearing, the primary planet wheel is simultaneously meshed with a gear ring and one gear end of the primary sun shaft, a secondary planetary disc is sleeved on the outer circle of the end, which is close to the secondary planet shaft, of the output shaft, the secondary planetary disc is connected with one end of the secondary planet shaft through an inner hole on the secondary planet disc, the other end of the secondary planet shaft is connected with the other end of the secondary planet wheel through a roller bearing II, the secondary planet wheel is simultaneously meshed with the gear ring and the gear end of the secondary sun shaft, two ball bearings II are arranged in the inner holes of an end cover of the speed reducer, the ball bearings II are sleeved on the output shaft and are separated through baffle plates on the output shaft, the inner end of the inner ring of the inner ball bearing II is attached to the secondary planet disc, the other end of the end cover of the speed reducer is provided with a bearing end cover, and the bearing end cover stretches into the inner part of the end cover of the speed reducer to be propped against the outer ring of the outer ball bearing II.
One end of the fixed sleeve is circumferentially processed with an edge, the other end of the fixed sleeve is processed with a flange, an external bulge is arranged on the fixed sleeve close to the outer circle of the flange end, and an internal bulge is arranged on the inner wall of the fixed sleeve close to the edge end; the protective sleeve is uniformly provided with guide holes along the circumferential direction.
The III section head body comprises round platform part I and cylinder part I, round platform part I major diameter end face links to each other with cylinder part I, the III section head body has processed big cylinder hole, round platform hole I and little cylinder hole from round platform part I path end to cylinder part I in proper order, and the screw hole has all been seted up to the I minor diameter end of III section head body round platform part I and cylinder part I.
The V-section head body consists of a round platform part II and a cylindrical part II, the large-diameter end of the round platform part II is connected with the cylindrical part II, the V-section head body is sequentially provided with a cylindrical hole I, a round platform hole II, a cylindrical hole II and a cylindrical hole III from the small-diameter end of the round platform part II to the cylindrical part II, and the small-diameter end of the round platform part II and the cylindrical part II of the V-section head body are provided with threaded holes.
The VI-section head body is in a round table shape, guide slots are uniformly arranged in the circumferential direction of the VI-section head body, and countersunk holes are formed in the edge of the VI-section head body.
The end face of one end of the VII section head body sleeve is an arc-shaped face, a large countersunk hole is machined in the arc-shaped face of the VII section head body sleeve, a central hole is machined in the other end of the VII section head body sleeve, the central hole is communicated with the large countersunk hole, and five rib plates are arranged on the outer circle of the central hole section of the VII section head body sleeve along the circumferential direction.
The beneficial effects of the invention are as follows: the traditional heading machine cutting head is of an integral structure, a designer determines the size of the heading machine cutting head according to a specific underground cutting environment, and if the cutting environment is changed, the cutting head needs to be redesigned. The cutting head changes the prior structure, the cutting head is divided into a plurality of sections, the longitudinal extension of the length of the cutting head can be realized through the spline shaft and the hydraulic cylinder assembly at the rear end, and when the cutting head cuts harder rock, the distance in the longitudinal direction of a cutting pick is shortened, so that the heading machine has smaller line cutting distance; when the cutting head cuts soft rock or coal, the distance in the longitudinal direction of the cutting head can be prolonged, so that the heading machine has a larger line cutting distance to adapt to the cutting working conditions of the relevant soft rock and coal, and the yaw speed is properly increased to improve the working efficiency of the heading machine. The cutting head solves the problems of a working condition and a design, and greatly reduces the design cost through the structure. The longitudinal length can be adjusted according to working conditions, so that the cutting head of the heading machine has universality and has stronger economic and technical benefits.
Drawings
FIG. 1 is a schematic view of a cutting portion structure of the present invention;
FIG. 2 is a cross-sectional view of a cutting portion structure of the present invention;
FIG. 3 is a schematic diagram of a planetary reducer according to the present invention;
FIG. 4 is a schematic view of the telescopic structure of the present invention;
FIG. 5 is a front view of the fixing sleeve structure of the present invention;
FIG. 6 is a left side view of the fixing sleeve structure of the present invention;
FIG. 7 is a front view of the protective sleeve structure of the present invention;
FIG. 8 is a left side view of the protective sleeve structure of the present invention;
FIG. 9 is a schematic view of a cutting head assembly according to the present invention;
FIG. 10 is a cross-sectional view of a section III head of the present invention;
FIG. 11 is a left side view of a section III head structure of the present invention;
FIG. 12 is a cross-sectional view of a V-section head structure of the present invention;
FIG. 13 is a left side view of the V-section head structure of the present invention;
FIG. 14 is a cross-sectional view of a VI-stage limit baffle structure in accordance with the present invention;
FIG. 15 is a left side view of a VI end stop construction of the present invention;
FIG. 16 is a cross-sectional view of a sleeve structure of a VII segment of the present invention;
FIG. 17 is a left side view of the sleeve structure of the VII segment of the present invention;
1-cutting motor, 2-planetary reducer, 201-reducer housing, 202-reducer end cap, 203-bearing end cap, 204-primary planetary gear, 205-primary planetary shaft, 206-primary sun shaft, 207-coupling, 208-ball bearing I, 209-ring gear, 210-roller bearing II, 211-tapered roller bearing, 212-ball bearing II, 213-output shaft, 214-secondary sun shaft, 215-secondary planetary disc, 216-secondary planetary shaft, 217-primary planetary disc, 218-secondary planetary gear, 219-ball bearing III, 220-ball bearing IV, 3-telescoping portion, 301-protective sleeve, 302-fixed sleeve, 303-telescoping sleeve, 304-spline sleeve, 305-large spline shaft, 306-a protective sleeve cantilever, 307-a roller bearing I, 308-a double-row tapered roller bearing I, 309-a telescopic sleeve large end cover, 310-O-shaped ring, 311-oil seal, 312-end cover, 4-cutting head, 401-I end baffle ring, 402-I end head body, 403-II end head body, 404-II end baffle plate, 405-III end baffle ring, 406-III end head body, 407-III end baffle plate, 408-IV end baffle ring, 409-IV end head body, 410-IV end baffle plate, 411-V end baffle ring, 412-V end head body, 413-V end baffle plate, 414-VI end baffle ring, 415-VI end head body, 416-VI end baffle plate, 417-VII end baffle ring, 418-VII end head body sleeve, 419-VII section head body, 420-II section end baffle ring, 421-cutting pick, 422-head inner seal, 5-hydraulic cylinder assembly, 6-round platform part I, 7-cylindrical part I, 8-large cylindrical hole, 9-round platform hole I, 10-small cylindrical hole, 11-round platform part II, 12-cylindrical part II, 13-guide slot hole, 14-arc surface, 15-large countersunk hole, 16-center hole, 17-rib plate, 18-edge and 19-guide hole.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples.
As shown in fig. 1 and 2, a variable-line-cutting-distance heading machine cutting head comprises a cutting motor 1, a planetary reducer 2, a telescopic part 3, a cutting head 4 and a hydraulic cylinder assembly 5, wherein the input end of the cutting head 4 is connected with the output end of the telescopic part 3, the input end of the telescopic part 3 is connected with the output end of the planetary reducer 2, the input end of the planetary reducer 2 is connected with the output end of the cutting motor 1, the hydraulic cylinder assembly 5 is arranged between the telescopic part 3 and the cutting motor 1, and the cutting motor 1 is hinged with one end of the hydraulic cylinder assembly 5 through a connecting ring and a pin shaft on a shell;
as shown in fig. 9-17, the cutting head 4 includes an I-section end baffle 401, an I-section head body 402, an II-section head body 403, an II-section limit baffle 404, an iii-section end baffle 405, an iii-section head body 406, an iii-section limit baffle 407, an iv-section end baffle 408, an iv-section head body 409, an iv-section limit baffle 410, a V-section end baffle 411, a V-section head body 412, a V-section limit baffle 413, a vi-section end baffle 414, a vi-section head body 415, a vi-section limit baffle 416, a vii-section end baffle 417, a vii-section head body cover 418, a vii-section head body 419 and a cutting pick 421, the vii-section head body 419, the vii-section head body cover 418 and the vii-section end baffle 417 form a cutting head vii-section assembly, the end face of one end of the vii-section head cover 418 is an arc face 14, a large countersink 15 is processed on the arc face 14 of the vii-section head body cover 418, the other end is processed with a center hole 16 and the center hole 16 is formed through the countersink 15, five rib plates 17 are arranged on the outer circumference of the center hole 16 of the VII section head body sleeve 418, the VII section head body 419 is sleeved on the outer circumference of the VII section head body sleeve 418, the VII section head body 419 is welded with the VII section head body sleeve 418, the tail end of the VII section head body sleeve 418 is fixedly installed with the VII section end baffle ring 417 through bolts, the VI section end baffle ring 414, the VI section head body 415 and the VI section end limiting baffle 416 form a cutting head VI section assembly, the VI section limiting baffle 416 is in a circular truncated cone shape, in order to prevent the cutting head VI section assembly and the cutting head VII section assembly from generating rotation difference in the circumferential direction, five guide slots 13 are uniformly arranged on the VI section limiting baffle 416 along the circumferential direction and are matched with five rib plates 17 arranged at the rear end of the VII section head body sleeve 418, the cutting head VI section assembly and the cutting head V section assembly, the cutting head IV section assembly and the cutting head VI section assembly, the cutting head IV section assembly and the cutting head III section assembly, the cutting head II section assembly and the cutting head III section assembly, the cutting head II section component and the cutting head I section component are the same as the cutting head VI section component and the cutting head VII section component in principle, a countersink is processed at the edge of a VI section limiting baffle 416, the head end of a VI section head body 415 is fixedly installed through a bolt VI section limiting baffle 416, the tail end of the VI section head body 415 is fixedly installed through a bolt and a VI section end baffle ring 414, the cutting head VII section component is connected with the cutting head VI section component in a tail-to-tail mode, a V section head body 412, a V section end baffle ring 411 and a V section limiting baffle 413 form a cutting head V section component, the V section head body 412 is composed of a round platform part II 11 and a cylindrical part II 12, the large diameter end of the round platform part II 11 is connected with the cylindrical part II 12, the V section head body 412 is sequentially processed with a cylindrical hole I, a round platform hole II, a cylindrical hole II and a cylindrical hole III from the small diameter end of the round platform part II 11 to the cylindrical part II 12, threaded holes are formed in the small diameter end of the round table part II 11 and the cylindrical part II 12 of the V-shaped head body 412, the small diameter end of the round table part II 11 at the head end of the V-shaped head body 412 is connected with the V-shaped limit baffle 413 through bolts, the cylindrical part II 12 at the tail end of the V-shaped head body 412 is fixedly installed with the V-shaped end baffle 411 through bolts, the head end of the V-shaped head assembly is connected with the tail end of the VI-shaped head assembly, the IV-shaped head body 409, the IV-shaped limit baffle 410 and the IV-shaped end baffle 408 form a IV-shaped head assembly, the head end of the IV-shaped head body 409 is connected with the IV-shaped end baffle 410, the head end of the IV-shaped head assembly is connected with the tail end of the V-shaped head assembly, the III-shaped head body 406, the III-shaped end baffle 405 and the III-shaped end baffle 407 form a head III-shaped assembly, the III-shaped head body 406 is formed by the round table part I6 and the cylindrical part I7, the end face of the large diameter end of the round platform part I6 is connected with the cylindrical part I7, the III-section head body 406 is sequentially provided with a large cylindrical hole 8, a round platform hole I9 and a small cylindrical hole 10 from the small diameter end of the round platform part I6 to the cylindrical part I7, the small diameter end of the round platform part I6 and the cylindrical part I7 of the III-section head body 406 are provided with threaded holes, the small diameter end of the round platform part I6 at the head end of the III-section head body 406 is connected with the III-section limit baffle 407 through bolts, the cylindrical part I7 at the tail end of the III-section head body 406 is connected with the III-section end baffle 405 through a screw, the head end of the cutting head III-section assembly is connected with the tail end of the cutting head IV-section assembly, the II-section head body 403, the II-section end baffle 420 and the II-section limit baffle 404 form a cutting head II-section assembly, the head end of the II-section head body 403 is connected with the II-section end baffle 404 through a bolt, the tail end of the II-section head body 403 is connected with the II-section end baffle 420 through a bolt, the head end of the cutting head II section assembly is connected with the tail end of the cutting head III section assembly, the I section head body 402 and the I section end baffle ring 401 form a cutting head I section assembly, the tail end of the I section head body 402 is connected with the I section end baffle ring 401 through a bolt, the head end of the cutting head I section assembly is connected with the tail end of the cutting head II section assembly, the I section head body 402 in the cutting head I section assembly is used for guiding the II section head body 403 and limiting the axial displacement of the II section end baffle ring 420 so as to limit the axial displacement of the cutting head II section assembly, and simultaneously, the rotation of the circumference of the cutting head II section assembly is also limited by the cooperation of the guiding slot 13 and the rib plate 17, all cutting pick 421 positions on the whole cutting head 4 are further limited, no relative displacement exists among the cutting pick 421, the cutting head VII section assembly, the cutting head VI section assembly, the cutting head V section assembly, the cutting head IV section assembly, the cutting head III section assembly, the cutting head II section component and the cutting head I section component form a cutting head body, and the outer side wall of the cutting head body is provided with a cutting pick 421;
as shown in fig. 4-8, the telescopic part 3 comprises a protection sleeve 301, a fixing sleeve 302, a telescopic sleeve 303, a spline sleeve 304, a large spline shaft 305, a protection sleeve cantilever 306, a roller bearing i 307, a double-row tapered roller bearing i 308, a telescopic sleeve large end cover 309, an O-ring 310, an oil seal 311 and an end cover 312, wherein the spline sleeve 304 is arranged on the outer circle of a first shaft section of the large spline shaft 305 near a second shaft section through a spline sleeve, the second shaft section and a fourth shaft section of the large spline shaft 305 are respectively connected with the telescopic sleeve 303 through the roller bearing i 307 and the double-row tapered roller bearing 308, the roller bearing i 307 and the double-row tapered roller bearing 308 are used for supporting the large spline shaft 305, the roller bearing i 307 is positioned through the shaft shoulder of a third shaft section of the large spline shaft 305 and the inner bulge of the telescopic sleeve 303, the telescopic sleeve 303 is positioned on the inner side of the cutting head 4 and connected with the telescopic sleeve large end cover 309 through bolts, the large end cover 309 of the telescopic sleeve is sleeved on the fifth shaft section of the large spline shaft 305 and is sealed by an O-shaped ring 310, the outer end of the telescopic sleeve 303 is sleeved with a fixed sleeve 302, one end of the fixed sleeve 302 is circumferentially provided with a rim 18, a head inner seal 422 is arranged between the rim 18 and the I-section end baffle 401, the rim 18 of the fixed sleeve 302 is fixedly arranged with an end cover 312 through bolts, an oil seal 311 is arranged between the fixed sleeve 302 and the telescopic sleeve 303, the other end of the fixed sleeve 302 is provided with a flange, the outer circle of the fixed sleeve 302 close to the flange end is provided with an outer bulge, the inner wall of the fixed sleeve 302 close to the rim 18 is provided with an inner bulge, the inner bulge structure of the fixed sleeve 302 is used for limiting the moving position of the telescopic sleeve 303, the outer circle of the fixed sleeve 302 is provided with a protective sleeve 301, the protective sleeve 301 is uniformly provided with guide holes 19 along the circumferential direction, five edges 18 are uniformly arranged on one side of the fixed sleeve 302 and can extend out of the guide holes 19 on the protective sleeve 301, the guide holes 19 are used for clamping an I section end baffle ring 401 in a I section assembly of the cutting head, displacement is prevented when the cutting head 4 longitudinally extends out, further, when each section of the front end of the whole cutting head 4 extends out, the position of the I section assembly of the cutting head is guaranteed to be relatively unchanged, the outer circle of the part of the protective sleeve 301, close to a large end cover 309 of the telescopic sleeve, is matched with small-diameter inner holes of a large end cover 309 of the telescopic sleeve, the protective sleeve 301 is welded with the large end cover 309 of the telescopic sleeve, a protective sleeve cantilever 306 is welded on the outer circle of the protective sleeve 301, the protective sleeve cantilever 306 is hinged with the other end of the hydraulic cylinder assembly 5 through the connecting ring, the telescopic part 3 is connected with an output shaft of the planetary reducer 2 through a spline sleeve 304, the flange end of the fixed sleeve 302 is fixedly mounted through a bolt, and is sealed through the end cover 312 and the oil seal 311, a fifth shaft section of the large spline shaft 305 is connected with the large end cover 415 through the spline sleeve, a sixth shaft section of the large end cover 305 penetrates into a center hole 16 of a large end cover of the large end cover 305 of the sleeve 418, and the large end cover 305 is driven by the spline sleeve 305 to move through the spline sleeve 305, and the spline sleeve 305 is driven by the spline sleeve 305 to move along the spline sleeve 305 and the large end cover of the spline sleeve 305. When the output shaft 213 rotates, the spline sleeve 304 and the large spline shaft 305 can be driven to rotate, and meanwhile, the large spline shaft 305 can move along the axial direction of the spline sleeve 304 under the action of the hydraulic cylinder assembly 5, namely, the large spline shaft 305 has two degrees of freedom of rotation and movement.
As shown in fig. 3, the planetary reducer 2 comprises a reducer housing 201, a reducer end cover 202, a bearing end cover 203, a first-stage planetary gear 204, a first-stage planetary shaft 205, a first-stage sun shaft 206, a coupler 207, a ball bearing i 208, a gear ring 209, a roller bearing ii 210, a tapered roller bearing 211, a ball bearing ii 212, an output shaft 213, a second-stage sun shaft 214, a second-stage planetary disk 215, a second-stage planetary shaft 216, a first-stage planetary disk 217, a second-stage planetary gear 218, a ball bearing iii 219, a ball bearing iv 220 and a supporting frame 221, wherein one end of the flange end of the reducer housing 201 is connected with the flange end of the cutting motor 1, the other end of the reducer housing 201 is welded with the reducer end cover 202, one end of the first-stage sun shaft 206 is connected with the output shaft of the cutting motor 1 through the coupler 207, the other end of the first-stage sun shaft 206 penetrates the ball bearing i 208, the outer ring of the ball bearing i 208 is fixedly mounted with the inner hole of the supporting frame 221, the support frame 221 is composed of a vertical plate and a square plate, both sides of the square plate are welded with one end of the vertical plate, the other end of the vertical plate is welded with the inner wall of the speed reducer shell 201, the optical axis part at the other end of the primary sun shaft 206 is connected with one end of the secondary sun shaft 214 through a ball bearing III 219, the other end of the secondary sun shaft 214 is connected with the output shaft 213 through a ball bearing IV 220, a primary planetary disc 217 is sleeved on the outer circle of the part of the secondary sun shaft 214, which is close to the primary sun shaft 206, the primary planetary disc 217 is connected with one end of the primary planetary shaft 205 through an inner hole on the primary planetary disc 217, the other end of the primary planetary shaft 205 is connected with the primary planetary wheel 204 through a tapered roller bearing 211, the primary planetary wheel 204 is meshed with the gear ends of the gear ring 209 and the primary sun shaft 206 at the same time, the gear ring 209 is fixedly mounted with the inner wall of the speed reducer shell 201, the output shaft 213 is sleeved with the secondary planetary disc 215 near the outer circle of the one end of the secondary planetary shaft 216, the second-stage planetary disc 215 is connected with one end of the second-stage planetary shaft 216 through an inner hole on the second-stage planetary shaft 216, the other end of the second-stage planetary shaft 216 is connected with the other end of the second-stage planetary gear 218 through two roller bearings II 210, the second-stage planetary gear 218 is meshed with the gear ends of the gear ring 209 and the second-stage sun shaft 214 at the same time, two ball bearings II 212 are arranged in the inner hole of the end cover 202 of the speed reducer, the ball bearings II 212 are sleeved on the output shaft 213 and are separated through a baffle plate on the output shaft 213, the inner end of the inner ring of the inner ball bearing II 212 is attached to the second-stage planetary disc 215, the other end of the end cover 202 of the speed reducer is provided with a bearing end cover 203, and the inner part of the end cover 203 of the end cover 202 of the bearing is in deep penetration into the outer ring of the outer ball bearing II 212; the cutting motor 1 stretches out the axle rotation, drive the rotation of one-level sun shaft 206 through the shaft coupling 207, one-level sun shaft 206 gear end and one-level planet wheel 204 meshing, make one-level planet wheel 204 rotate around one-level planet shaft 205, make one-level planet shaft 205 be fixed in the hole of one-level planet wheel 217 through welding, simultaneously one-level planet wheel 204 and ring gear 209 meshing, make one-level planet wheel 217 rotatory, the secondary sun shaft 214 inserts in the central spline hole of one-level planet wheel 217, and then drive secondary sun shaft 214 through spline fit and rotate, secondary sun shaft 214 gear end and secondary planet wheel 218 meshing, make secondary planet wheel 218 rotate around secondary planet shaft 216, make secondary planet wheel 218 be fixed in the hole of secondary planet wheel 215 through welding, simultaneously secondary planet wheel 218 and ring gear 209 meshing, make secondary planet wheel 215 rotate, output shaft 213 inserts in the central spline hole of secondary planet wheel 215, and then drive output shaft 213 through spline fit and rotate.
The working principle of the invention is as follows: when the heading machine cuts hard rock, the cutting head 4 keeps the state shown in fig. 1, the cutting motor 1 drives the primary sun shaft 206 of the planetary reducer 2 to rotate, the gear end of the primary sun shaft 206 is meshed with the primary planet gear 204, the gear ring 209 (fixed) is meshed with the primary planet gear 204, the primary planet gear 204 rotates around the primary planet shaft 205, the primary planet shaft 205 is fixed on the primary planet disc 217, the primary planet disc 217 is driven to rotate, the primary planet disc 217 is fixed with the secondary sun shaft 214, the end gear of the secondary sun shaft 214 is meshed with the secondary planet gear 218, the gear ring 209 (fixed) is meshed with the secondary planet gear 218, the secondary planet gear 218 rotates around the secondary planet shaft 216, the secondary planet shaft 216 is fixed on the secondary planet disc 215, the secondary planetary disc 215 is driven to rotate, the output shaft 213 is in spline connection with the spline sleeve 304 and the large spline shaft 305, the large spline shaft 305 is driven to rotate, the head of the large spline shaft 305 is fixed on the cutting head 4 through bolts, meanwhile, the external spline structure of the large spline shaft 305 is in spline connection with the cutting VI-th section head body 415, the whole VI-th section head body 415 and the VII-th section head body sleeve 418 synchronously rotate with the large spline shaft 305, as the structures of the whole VI-th section head body 415 and the VII-th section head body sleeve are similar to those of the rest sections of head bodies (rib plates are arranged on the head bodies) in FIG. 10, the limiting baffles of each section are similar to those of the rest sections of head body sleeve 13 (guide slots 13 are arranged on the head body sleeve), and all sections of the limiting baffles are synchronously rotated in the circumferential direction, so that the whole cutting head 15 is driven by the large spline shaft 305 to integrally rotate;
when the heading machine cuts soft rock or coal, the sections of the cutting head 15 extend out in sequence. Under the action of the hydraulic cylinder assembly 5, the protective sleeve 301, the large end cover 309 of the telescopic sleeve and the telescopic sleeve 303 integrally translate outwards, and meanwhile, the roller bearing I307, the double-row tapered roller bearing I308 and the large spline shaft 305 in the protective sleeve are driven to translate, the cutting head VII assembly and the large spline shaft 305 move together, when the VII-segment end baffle ring 417 reaches the limit position, the cutting head VI assembly is driven to move, when the VI-segment end baffle ring 414 reaches the limit position, the cutting head V-segment assembly is driven to move, when the V-segment end baffle ring 411 reaches the limit position, the cutting head IV-segment assembly is driven to move, when the IV-segment end baffle ring 408 reaches the limit position, the cutting head II-segment assembly is driven to move, when the II-segment end baffle ring reaches the limit position, the cutting head I-segment assembly is driven to move along the axial direction by the edge 18 on the fixed sleeve 302, and therefore, when the VI-segment end baffle ring reaches the limit position, the cutting head I-segment assembly is kept at the relative position of the fixed sleeve 302. In addition, the large spline shaft 305 is still driven by the spline sleeve 304 and the output shaft 213 to rotate, and rib plates 17 are arranged on each cutting head section assembly in the circumferential direction to block the cutting head section assembly, so that synchronous rotation movement can be realized.
Claims (7)
1. The utility model provides a changeable entry driving machine cutting head of line cutting distance which characterized in that includes cutting motor, planetary reducer, expansion portion, cutting head and pneumatic cylinder subassembly, cutting head input links to each other with expansion portion output, and expansion portion input links to each other with planetary reducer output, and planetary reducer input links to each other with cutting motor output, be provided with the pneumatic cylinder subassembly between expansion portion and the cutting motor;
the cutting head comprises an I-section end baffle ring, an I-section head body, an II-section limit baffle, an III-section end baffle ring, an III-section head body, an III-section limit baffle plate, a V-section end baffle ring, an IV-section head body, an IV-section limit baffle plate, a V-section end baffle ring, a V-section end baffle plate, a VI-section end baffle ring, a VI-section head body, a VI-section limit baffle plate, a VII-section end baffle ring, a VII-section head body sleeve, a VII-section head body and a cutting pick, the VII-section head body sleeve and the VII-section end baffle ring form a cutting head VII-section assembly, the VII-section head body sleeve outer circle sleeve is provided with a VII-section head body, the tail end of the VII-section head body sleeve is connected with the VII-section end baffle ring, the VI-section head body and the VI-end limit baffle plate form a cutting head VI-section assembly, the VI-section head body end is connected with the VI-section limit baffle plate, the tail end sleeve is connected with the cutting head and the cutting head assembly, the V-section head body, the V-section end baffle ring and the V-section limit baffle plate form a cutting head V-section assembly, the head end of the V-section head body is connected with the V-section limit baffle plate, the tail end of the V-section head body is connected with the V-section end baffle ring, the head end of the cutting head V-section assembly is connected with the tail end of the cutting head VI-section assembly, the head end of the IV-section head body, the IV-section limit baffle plate and the IV-section end baffle plate form a cutting head IV-section assembly, the head end of the IV-section head body is connected with the IV-section end baffle plate, the head end of the cutting head IV-section assembly is connected with the tail end of the cutting head V-section assembly, the head end of the III-section head body, the III-section end baffle plate and the III-section end baffle plate form a cutting head III-section assembly, the head end of the III-section body is connected with the III-section end baffle ring, the head end of the IV-section assembly is connected with the tail end of the cutting head III-section assembly, the cutting head comprises a cutting head body, a cutting head I, a cutting head VII, a cutting head VI, a cutting head V, a cutting head IV, a cutting head III, a cutting head II and a cutting head I, wherein the cutting head II is formed by a cutting head body, a cutting head II end baffle ring and a cutting head II limiting baffle plate, the cutting head body head end is connected with the cutting head II, the cutting head II is formed by a cutting head body and a cutting head I end baffle ring, the cutting head I is formed by a cutting head body and a cutting head I, the cutting head I is connected with the cutting head I, the cutting head II, the cutting head V, the cutting head IV, the cutting head III, the cutting head II and the cutting head I are formed by a cutting head body, and cutting picks are arranged on the outer side wall of the cutting head body;
the telescopic part comprises a protection sleeve, a fixing sleeve, a telescopic sleeve, a spline sleeve, a large spline shaft, a protection sleeve cantilever, a roller bearing I, a double-row tapered roller bearing I, a telescopic sleeve large end cover, an O-shaped ring, an oil seal and an end cover, wherein the spline sleeve is arranged on the outer circle sleeve of a first shaft section of the large spline shaft, a second shaft section and a fourth shaft section of the large spline shaft are respectively connected with the telescopic sleeve through the roller bearing I and the double-row tapered roller bearing, the telescopic sleeve is positioned on the inner side part of the cutting head and is connected with the telescopic sleeve large end cover, the telescopic sleeve large end cover is sleeved on the fifth shaft section of the large spline shaft, the fixing sleeve is sleeved on the outer end of the telescopic sleeve, the inner end of the head is arranged between the fixing sleeve and the I-section end baffle ring, the protection sleeve is arranged on the outer circle sleeve, the protection sleeve is provided with the protection sleeve cantilever, the telescopic part is connected with the output shaft of the planetary reducer through the spline sleeve, the flange end of the fixing sleeve is fixedly mounted through a bolt, the fifth shaft section of the large spline shaft is connected with the head body of the large spline shaft through the spline sleeve, and the head body of the sixth shaft section of the large spline shaft is fixedly mounted through the bolt.
2. A variable line length heading machine cutterhead as defined in claim 1 wherein: the planetary reducer comprises a reducer shell, a reducer end cover, a bearing end cover, a first-stage planetary gear, a first-stage planetary shaft, a first-stage sun shaft, a first-stage planetary disc, a coupler, a ball bearing I, a gear ring, a roller bearing II, a tapered roller bearing, a ball bearing II, an output shaft, a second-stage sun shaft, a second-stage planetary disc, a second-stage planetary gear, a ball bearing III and a ball bearing IV, wherein one end of a flange end of the reducer shell is connected with a flange end of a cutting motor, the other end of the reducer shell is welded with the reducer end cover, one end of the first-stage sun shaft is connected with an output shaft of the cutting motor through the coupler, the other end of the first-stage sun shaft penetrates through the ball bearing I, an outer ring of the ball bearing I is fixedly arranged with an inner hole of a support frame, an optical axis part of the first-stage sun shaft is connected with one end of the second-stage sun shaft through the ball bearing III, the other end of the second-stage sun shaft is connected with the output shaft through the ball bearing IV, the second-stage planetary shaft is sleeved with one end of the outer ring of the first-stage sun shaft part, the first-stage planetary disc is connected with one end of the first-stage planetary shaft through an inner hole of the ball bearing II, the first-stage planetary shaft is connected with one end of the first-stage planetary shaft through the inner hole of the planetary shaft on the planetary shaft, the second planetary shaft is meshed with one end of the second planetary shaft through the second planetary shaft, the inner ring II is meshed with the second planetary shaft II through the inner ring of the planetary shaft on the inner ring of the second planetary shaft, the planetary shaft is meshed with the second planetary shaft, one end of the second planetary shaft is meshed with the inner end of the planetary shaft II is meshed with the output shaft through the inner ring II, the other end of the end cover of the speed reducer is provided with a bearing end cover, and the bearing end cover stretches into the inner part of the end cover of the speed reducer to be propped against the outer ring of the outer ball bearing II.
3. A variable line length heading machine cutterhead as defined in claim 1 wherein: one end of the fixed sleeve is circumferentially processed with an edge, the other end of the fixed sleeve is processed with a flange, an external bulge is arranged on the fixed sleeve close to the outer circle of the flange end, and an internal bulge is arranged on the inner wall of the fixed sleeve close to the edge end; the protective sleeve is uniformly provided with guide holes along the circumferential direction.
4. A variable line length heading machine cutterhead as defined in claim 1 wherein: the III section head body comprises round platform part I and cylinder part I, round platform part I major diameter end face links to each other with cylinder part I, the III section head body has processed big cylinder hole, round platform hole I and little cylinder hole from round platform part I path end to cylinder part I in proper order, and the screw hole has all been seted up to the I minor diameter end of III section head body round platform part I and cylinder part I.
5. A variable line length heading machine cutterhead as defined in claim 1 wherein: the V-section head body consists of a round platform part II and a cylindrical part II, the large-diameter end of the round platform part II is connected with the cylindrical part II, the V-section head body is sequentially provided with a cylindrical hole I, a round platform hole II, a cylindrical hole II and a cylindrical hole III from the small-diameter end of the round platform part II to the cylindrical part II, and the small-diameter end of the round platform part II and the cylindrical part II of the V-section head body are provided with threaded holes.
6. A variable line length heading machine cutterhead as defined in claim 1 wherein: the VI-section head body is in a round table shape, guide slots are uniformly arranged in the circumferential direction of the VI-section head body, and countersunk holes are formed in the edge of the VI-section head body.
7. A variable line length heading machine cutterhead as defined in claim 1 wherein: the end face of one end of the VII section head body sleeve is an arc-shaped face, a large countersunk hole is machined in the arc-shaped face of the VII section head body sleeve, a central hole is machined in the other end of the VII section head body sleeve, the central hole is communicated with the large countersunk hole, and five rib plates are arranged on the outer circle of the central hole section of the VII section head body sleeve along the circumferential direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910151366.1A CN109763817B (en) | 2019-02-28 | 2019-02-28 | Heading machine cutting head with changeable line cutting distance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910151366.1A CN109763817B (en) | 2019-02-28 | 2019-02-28 | Heading machine cutting head with changeable line cutting distance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109763817A CN109763817A (en) | 2019-05-17 |
| CN109763817B true CN109763817B (en) | 2023-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910151366.1A Active CN109763817B (en) | 2019-02-28 | 2019-02-28 | Heading machine cutting head with changeable line cutting distance |
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| CN (1) | CN109763817B (en) |
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| CN106150492A (en) * | 2016-08-05 | 2016-11-23 | 辽宁工程技术大学 | Cutting mechanism for heading machine with double cutterheads |
| CN106437740A (en) * | 2016-09-23 | 2017-02-22 | 韩自俊 | Roadheader cutting head with harrow teeth, telescopic structure thereof and accessory drilling tool |
| CN209539351U (en) * | 2019-02-28 | 2019-10-25 | 辽宁工程技术大学 | A kind of variable transversal away from cutting head of roadheader |
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2019
- 2019-02-28 CN CN201910151366.1A patent/CN109763817B/en active Active
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|---|---|---|---|---|
| CN201043466Y (en) * | 2007-02-16 | 2008-04-02 | 上海创力矿山设备有限公司 | Inner atomizing device of development machine cutter head |
| WO2011029111A2 (en) * | 2009-09-10 | 2011-03-17 | Sandvik Mining And Construction G.M.B.H. | Tunneling machine or extraction machine |
| CN102345459A (en) * | 2010-07-30 | 2012-02-08 | 三一重型装备有限公司 | Cutting mechanism for heading machine |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN109763817A (en) | 2019-05-17 |
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