CN207499869U - A kind of winning machine cutting part with double speed roller - Google Patents

Abstract

The utility model discloses a kind of winning machine cutting part with double speed roller, including：The motor driving part includes left cutting motor and right cutting motor, and the two is arranged in cutting units babinet, and the drive connection with roller output section is realized by gear drive portion；The roller output section includes middle part output shaft, distal end output shaft, midfoot support frame, middle part roller, distal end supporting rack, distal end roller, and a cutting drum is separated into two parts rotated coaxially, and can realize that two parts roller differential rotates.Distal end drum rotation speed is higher, there is higher coal cutting efficiency, and helical blade lift angle is smaller, and cornerite is larger, there is preferably axial mobility；Middle part drum rotation speed is relatively low, and helix angle is larger, can provide more tangential forces to convey the coal cinder to come, increase ejection velocity, coal cinder is made preferably to fall on drag conveyor, reduce float coal situation, preferably complete roller conveying and the process coaling.

Description

A kind of winning machine cutting part with double speed roller

Technical field

The present invention relates to coal mine machinery technical fields, and in particular to a kind of low seam mining machinery with differential separation barrel Cutting units.

Background technology

In recent years, coal in China production industry is fast-developing, and the demand to mining machinery various functions also quickly changes, adopts Coal machine is one of important equipment of coal production mechanization and automation.In thin seam mining, to improve yield, at present fully mechanized mining Cutting for the girdle double-ended shearer used on working face is deep generally in more than 600mm, with cutting a deep increase, coal cutting amount It is gradually increased.The theoretical analysis is it is found that roller is conducive to the axial flowing of coal in the slow-speed of revolution, but relatively low rotating speed causes to roll The throwing coal speed of cylinder is relatively low, and the effect of loading coal of coalcutter is bad so that under the smaller cutting of girdle mining height Coal cinder is deposited in goaf, causes float coal situation serious, influences the walking of coalcutter, influences the passage of stent.

Invention content

Goal of the invention：In order to overcome the deficiencies in the prior art, the present invention provides a kind of adopting with double speed roller Coal machine cutting units can realize that two parts roller coaxial differential rotates, and distal end drum rotation speed is higher, there is higher coal cutting efficiency, Helical blade lift angle is smaller, and cornerite is larger, there is preferably axial mobility；Middle part drum rotation speed is relatively low, and helix angle is larger, increases Add tangential force and ejection velocity, preferably complete roller conveying and the process coaling.

Technical solution：To achieve the above object, the technical solution adopted by the present invention is：

A kind of winning machine cutting part with double speed roller, including cutting units babinet, motor driving part, gear drive portion, Roller output section；

Wherein, the motor driving part includes left cutting motor and right cutting motor, and the two is arranged in cutting units babinet It is interior；The gear drive portion include being arranged in left side gear axis in cutting units babinet, idle pulley one, right side gear axis, idle pulley two, Total input shaft, planetary gear speed reducing mechanism, one-stage gear axis, secondary gear wheel shaft, input gear, output gear, three-level optical axis, constant speed tooth Wheel, Speed allotment axis, master gear, pinion；

The output shaft of the left side gear axis and left cutting motor is connected, and gear parts are meshed with idle pulley one； The idle pulley one is meshed again with the gear parts of right side gear axis, and right side gear axis and the output shaft of right cutting motor coordinate Connection；The right side gear axis is meshed, and idle pulley two is meshed with the gear parts of total input shaft again with idle pulley two；It is described total Input shaft is gear shaft, and the input shaft of one end and planetary gear speed reducing mechanism far from gear is connected；The planetary reducer The input shaft of structure is located at same axis direction with output shaft, and output shaft is connected with one-stage gear axis；The one-stage gear The gear parts of axis are meshed with the input gear on secondary gear wheel shaft, and two sections of gears are provided on secondary gear wheel shaft, wherein half The larger gear of diameter is input gear, and the smaller gear of radius is output gear；Output gear on the secondary gear wheel shaft with Constant speed gear on three-level optical axis is meshed, and constant speed gear is meshed again with the master gear on Speed allotment axis；

The roller output section includes middle part output shaft, distal end output shaft, concentric bearings group, positioning bearing, midfoot support Frame, middle part roller, distal end supporting rack, distal end roller, end bearing group, abutment sleeve；

The gear parts of the middle part output shaft are meshed with the pinion on Speed allotment axis, and the number of teeth is more than pinion The number of teeth；The middle part output shaft for cylindrical shape, concentric bearings group and positioning bearing be separately fixed at middle part output shaft inner wall and On the shaft shoulder of outer wall；The middle part output the tip of the axis matches, and the outer wall of midfoot support frame with the inner wall of midfoot support frame It is fixedly connected with the inner wall of middle part roller；The distal end output shaft is gear shaft, and gear parts are meshed with master gear, tooth Number is less than the number of teeth of master gear；The described one end of distal end output shaft far from gear sequentially passes through middle part roller, concentric bearings group, determines Position sleeve, end bearing group and matched with the inner wall of distal end supporting rack, and the outer wall of distal end supporting rack and distal end roller is interior Wall is connected.

Further, the left side gear axis is exported with left cutting motor output shaft, right side gear axis and right cutting motor It is realized and is connected by spline between axis, planetary gear speed reducing mechanism output shaft and one-stage gear axis；

The described one end of total input shaft far from gear is provided with spline, and threaded hole, planetary reducer are provided in spline Mutually perforative through-hole is provided in the input of structure, output shaft, the bolt across through-hole is connected in the threaded hole, and and planetary reduction gear The input shaft of mechanism is connected, and planetary gear speed reducing mechanism is also matched with total input shaft by spline simultaneously, realizes preferable transmission Effect.

Further, the shaft part of total input shaft far from gear one end is equipped with the shaft shoulder, and carrying is equipped at the shaft shoulder Sleeve；Loading bearing group is socketed on the outside of the carrying sleeve, bearing block is provided at bearing outer ring；It is set on the bearing block A pair of of threaded hole is equipped with, is fixedly connected by bolt with the positioning wing plate on cutting units babinet.Loading bearing group, support In one end of total input shaft, it can play the role of bearing larger radial load, protect total input shaft, can be very good to ensure total The concentricity of input shaft and input shaft of planetary reduction gear；The design of positioning wing plate can reduce the assembly difficulty of bearing block, also may be used To obtain better assembly precision.

Further, the number of teeth of the input gear is 1.5-2.5 times of the one-stage gear axis gear number of teeth；The input The diameter of gear is 1.5-2.5 times of output gear diameter, and the modulus of output gear is 1.5-2 times of input gear.

Further, the Speed allotment axis is mandrel, and two groups of double-row conical bearings, every group of biserial are equipped on axis The quantity of taper roll bearing is two, and the bearing outer ring of one of which bearing is matched with pinion, the axis of another group of bearing Bearing outer-ring is matched with master gear；

The master gear is mounted side by side on pinion on Speed allotment axis, is both provided on adjacent spoke face corresponding Bellmouth, coordinated by the bellmouth on Double-conical-surface positioning pin and the master gear and pinion, two gears be connected as One entirety.Double-conical-surface positioning pin ensure that master gear and pinion rotate synchronously, and can transmit the driving force of bigger, structure It is compact, it is easy to disassemble.Separation barrel can be made to obtain different speed discrepancies by way of replacing master gear and pinion, used Flexibly, more occasions can be applicable in.

Further, setting is there are four bolt hole on the end face of the midfoot support frame, on the end face for corresponding to middle part roller It is also provided with there are four identical counter sink is distributed, counter sink is passed through to coordinate with the bolt hole by dormant bolt, by midfoot support Frame connects into an entirety with middle part roller, while the outer wall of midfoot support frame passes through in the barrel of channel-shaped shape face and middle part roller Side matches.

Further, the distal end supporting rack is round table-like, and tooth form splined hole is set as in the middle part of endoporus, is exported with distal end The tip of the axis spline matches；Threaded hole, and the end on the supporting rack of distal end are evenly equipped in the distal end faces of the distal end output shaft Round platen is provided in the counterbore of face, is connected in the threaded hole by bolt-through circle platen, realize distal end output shaft with The axial restraint of distal end supporting rack；Equally distributed one group of threaded hole is provided in the end face outside of the distal end supporting rack, is led to It crosses bolt and distal end roller and distal end supporting rack is connected into an entirety, and the end cavity of distal end roller is sealed.Circle The setting of shape platen can reduce the manufacture difficulty of distal end supporting rack, and bolt is embedded in the interior of distal end supporting rack with round platen Portion makes assembling compacter, saves space.

Further, the distal end output shaft is hollow-core construction, and center is installed with a rigid water pipe；The rigidity water pipe one Side is connected on intake end cover, and opposite side stretches out distal end output the tip of the axis, and passes through screw thread and the spray in the roller cavity of distal end Mouth is connected.

Further, the concentric bearings group is two taper roll bearings to dress, outer ring and middle part output shaft Inner wall coordinates, and the intermediate shaft part of inner ring and distal end output shaft coordinates；The bearing that positions is double-row conical bearing, axis The outer wall for holding inner ring and middle part output shaft coordinates, and bearing outer ring coordinates with cutting units babinet；

Side bearing inner race of the abutment sleeve both sides of the face respectively with concentric bearings group, end bearing group is in contact； The midfoot support frame is in bitubular wall construction, and inner tube wall is matched with the bearing outer ring of end bearing group；The middle part branch One group of radial through-hole is provided on support double barrel wall, corresponding radial through-hole is provided on the output shaft of middle part, is inserted by axially position pin Enter in two groups of through-holes, midfoot support frame and middle part output shaft are fixed into an entirety.In two bearings in concentric bearings group Outer ring coordinates respectively with two output shafts, it is ensured that two rollers are rotated with same axis, ensure that the stabilization of drum functions Property；Abutment sleeve contributes to the assembling of bearing, improves assembly precision, reduces assembly difficulty；The design of axially position pin is convenient for rolling The dismounting of cylinder, and certain shearing force can be born, play the role of overload protection.

Further, be provided with 2 helical blades on the distal end roller, the helix angle of helical blade for 12 ° extremely 20 ° (smaller helix angle is conducive to the axial flowing of coal) are disposed with pick on helical blade；Outside the middle part roller 1-3 helical blade is disposed on wall, the helix angle of helical blade (it is defeated to the axial direction of coal cinder to improve roller for 20 ° to 30 ° Send ability), pick is disposed on helical blade；

The helix angle of helical blade is more than the helix angle of helical blade on the roller of distal end on the middle part roller；It is described The rotating speed of distal end roller is 1.5-3 times of middle part drum rotation speed, and the axial length of distal end roller is middle part roller axial length 1-4 times.Based on the axial conveying effect of front end roller, while the part of front end roller participation coal cutting is longer.

Advantageous effect：A kind of winning machine cutting part with double speed roller provided by the invention, relative to the prior art, tool It has the advantage that：1st, it can realize that two parts roller coaxial differential rotates, distal end drum rotation speed is higher, has higher coal cutting to imitate Rate, helical blade lift angle is smaller, and cornerite is larger, there is preferably axial mobility；Middle part drum rotation speed is relatively low, helix angle compared with Greatly, increase tangential force and ejection velocity, preferably complete roller conveying and the process coaling；

2nd, it using Dual-motors Driving, is driven compared to single motor, the driving force of bigger can be obtained；Under identical driving force, Dual-motors Driving can possess smaller motor volume and single motor power；

3rd, since middle part drum rotation speed is relatively low, and helical blade lift angle is larger, therefore arranges 1-3 pieces helical blade still not The defeated coal gap of two parts roller intersection can be blocked, the flowing of coal cinder will not be hindered, while more helical blades can be protected The continuity to coal cinder active force is demonstrate,proved, reduces the pulsation of helical feed, improves the defeated coal effect of roller.

Description of the drawings

Fig. 1 is a kind of sectional view of the winning machine cutting part with double speed roller of the present invention；

Fig. 2 is the sectional view of roller output section in the present invention；

Fig. 3 a~3c are the structure diagram of middle part output shaft in the present invention；

Fig. 4 a~4b are the structure diagram of midfoot support frame in the present invention；

Fig. 5 a~5c are the structure diagram of middle part roller in the present invention；

Fig. 6 a~6b are the structure diagram of distal end output shaft in the present invention；

Fig. 7 a~7b are the structure diagram of distal end supporting rack in the present invention；

Figure includes：1-1, left cutting motor, 1-2, right cutting motor, 1-3, cutting units babinet, 1-3-1, main shaft end cap, 1-3-2, stepped hole, 1-3-3, intake end cover, 1-3-4, No.1 end cap,

2-1, left side gear axis, 2-2, idle pulley one, 2-3, right side gear axis, 2-4, idle pulley two, 2-5, total input shaft, 2-6, Star deceleration mechanism, 2-7, one-stage gear axis, 2-8, secondary gear wheel shaft, 2-9, input gear, 2-10, output gear, 2-11, three-level Optical axis, 2-12, constant speed gear, 2-13, Speed allotment axis, 2-14, master gear, 2-15, pinion, 2-16, bearing block, 2-17, Loading bearing group, 2-5-1, bolt, 2-5-2, carrying sleeve, 2-5-3, positioning wing plate, 2-13-1, Double-conical-surface positioning pin,

3-1, middle part output shaft, 3-2, distal end output shaft, 3-3, concentric bearings group, 3-4, positioning bearing, 3-5, middle part branch Support, 3-6, middle part roller, 3-7, distal end supporting rack, 3-8, rigid water pipe, 3-9, distal end roller, 3-10, end bearing group, 3- 11st, dormant bolt, 3-12, round platen, 3-13, bolt, 3-14, abutment sleeve, 3-15, axially position pin,

3-1-1, axially extending bore, 3-1-2, gear parts, 3-1-3, cooperation plane, 3-1-4, radial through-hole, 3-2-1, spiral shell Pit, 3-2-2, gear parts, 3-2-3, intermediate shaft part, 3-2-4, longest shaft part, 3-5-1, shell, 3-5-2, axially extending bore, 3-5-3, inner tube wall, 3-5-4, radial through-hole, 3-5-5, ladder shoulder, 3-5-6, bolt hole, 3-6-1, axially extending bore, 3-6-2, spiral shell Vane piece, 3-6-3, pick, 3-6-4, radial through-hole, 3-6-5, counter sink, 3-7-1, tooth form splined hole, 3-7-2, end face sink Hole, 3-7-3, threaded hole, 3-8-1, nozzle.

Specific embodiment

The present invention is further described below in conjunction with the accompanying drawings.

It is as shown in Figure 1, 2 a kind of winning machine cutting part with double speed roller, is driven including cutting units babinet 1-3, motor Dynamic portion, gear drive portion, roller output section；

Wherein, the winning machine cutting part uses Dual-motors Driving, and motor driving part includes left cutting motor 1-1 and right section Motor 1-2 is cut, the two is arranged in cutting units babinet 1-3；Multiple axis holes are provided on the cutting units babinet 1-3, outside axis hole It is cased with end cap；The gear drive portion includes the left side gear axis 2-1, one 2-2 of idle pulley, the right side being arranged in cutting units babinet 1-3 Side gear axis 2-3, two 2-4 of idle pulley, total input shaft 2-5, planetary gear speed reducing mechanism 2-6, one-stage gear axis 2-7, secondary gear wheel shaft 2- 8th, input gear 2-9, output gear 2-10, three-level optical axis 2-11, constant speed gear 2-12, Speed allotment axis 2-13, master gear 2- 14th, pinion 2-15, bearing block 2-16, loading bearing group 2-17；The roller output section includes middle part output shaft 3-1, distal end Output shaft 3-2, concentric bearings group 3-3, positioning bearing 3-4, midfoot support frame 3-5, middle part roller 3-6, distal end supporting rack 3-7, Rigid water pipe 3-8, distal end roller 3-9, end bearing group 3-10, circle platen 3-12 and a variety of bolt standard components.

The first order in the gear drive portion is left side gear axis 2-1, and left side gear axis 2-1 is internally provided with splined hole, It is matched with the shaft end splined section of left cutting motor 1-1；The left side gear axis 2-1 is fixed by being located at the bearing at axis both ends In the axis hole of cutting units babinet 1-3, gear parts are meshed with one 2-2 of idle pulley；One 2-2 of idle pulley and and right side gear The gear parts of axis 2-3 are meshed, right side gear axis 2-3 be internally provided with same splined hole and with right cutting motor 1-2 Shaft end splined section match；The right side gear axis 2-3 is fixed on cutting units babinet 1-3 by being located at the bearing at axis both ends Axis hole in, gear parts are meshed again with two 2-4 of idle pulley, the gear part split-phase of two 2-4 of idle pulley and total input shaft 2-5 Engagement, kinetic energy is transmitted；

Total input shaft 2-5 be gear shaft, section it is crosswise (extend transmission distance, saved transmission space, Provide convenience simultaneously for assembling), it is fixed on No.1 end cap 1-3-4 by bearing close to one end of gear parts, it is separate Spline is provided on the end face of gear side, threaded hole, the input of planetary gear speed reducing mechanism 2-6, output shaft are provided in spline It is provided with through-hole (providing assembly space for bolt 2-5-1), bolt 2-5-1 is connected (spiral shell with the input shaft of planetary gear speed reducing mechanism 2-6 Bolt plays the role of being fixedly connected and axial constraint), planetary gear speed reducing mechanism 2-6 is also matched with total input shaft 2-5 by spline simultaneously It closes；The input shaft of the planetary gear speed reducing mechanism 2-6 is located at same axis direction with output shaft, and spline is provided on output shaft Slot, the spline are matched with the splined section on one-stage gear axis 2-7；

The one-stage gear axis 2-7 is multi-diameter shaft, and one end of planetary gear speed reducing mechanism 2-6 is provided with spline, two End is fixed on each by a double-row conical bearing in cutting units babinet 1-3；The gear part of the one-stage gear axis 2-7 Divide and be meshed with the input gear 2-9 on secondary gear wheel shaft 2-8, the number of teeth of input gear 2-9 is one-stage gear axis 2-7 gears 1.5-2.5 times (gearratio 1.5-2.5, play decelerating effect) of the number of teeth；

The secondary gear wheel shaft 2-8 is cluster gear axis, and both ends are fixed on by bearing on cutting units babinet 1-3, There are two sections of gears in the middle part of shaft part, the wherein larger gear of radius is input gear 2-9, and the smaller gear of radius is output gear 2- The diameter and modulus of 10, input gear 2-9 and output gear 2-10 differ, and the diameter of input gear 2-9 is output gear 1.5-2.5 times (playing decelerating effect, gearratio 1.5-2.5) of 2-10 diameters, the modulus of output gear 2-10 is input tooth Take turns 1.5-2 times (the playing decelerating effect, gearratio 1.5-2.5) of 2-9；Output gear 2- on the secondary gear wheel shaft 2-8 10 are meshed with the constant speed gear 2-12 on three-level optical axis 2-11, and constant speed gear 2-12 is socketed in three-level optical axis 2-11 by bearing On, and constant speed gear 2-12 is meshed with the master gear 2-14 on Speed allotment axis 2-13；

The Speed allotment axis 2-13 is mandrel, and the mandrel is stepped in multistage, and diameter of axle minimal segment is fixed by axle sleeve In the axis hole of cutting units babinet 1-3, two sections of larger stepped hole 1-3-2 passed through on cutting units babinet 1-3 of the diameter of axle, the diameter of axle is most Big section periphery is provided with threaded hole, is bolted in the stepped hole 1-3-2 of cutting units babinet 1-3, Speed allotment axis 2-13 Both ends be fixed together by end cap and cutting units babinet 1-3；Two groups of biserial circles are installed on the Speed allotment axis 2-13 Taper roller bearing (bearing capacity for improving bearing), the quantity of every group of double-row conical bearing is two, and one of which is located at Close to coal wall side, bearing outer ring is matched with pinion 2-15, and another group of bearing is located remotely from the side of coal wall, bearing Outer ring is matched with master gear 2-14.

The gear parts 3-1-2 of the middle part output shaft 3-1 is meshed with the pinion 2-15 on Speed allotment axis 2-13, Its number of teeth is more than the number of teeth of pinion 2-15；The middle part output shaft 3-1 for tubular (convenient for other components such as distal end output shaft from Centre passes through, and rationally utilizes space), concentric bearings group 3-3 and positioning bearing 3-4 be separately fixed at inner wall in the middle part of stack shell with it is outer On the shaft shoulder of wall；The end of the middle part output shaft 3-1 is matched with the inner wall of midfoot support frame 3-5；The midfoot support frame It is set on the end face of 3-5 there are four bolt hole 3-5-6, it is identical to correspond to distribution there are four being also provided on the end face of middle part roller 3-6 Counter sink 3-6-5, dormant bolt 3-11 passes through counter sink 3-6-5 and bolt hole 3-5-6 to coordinate, by midfoot support frame 3-5 with Middle part roller 3-6 connects into an entirety, while the outer wall of midfoot support frame 3-5 passes through channel-shaped shape face and middle part roller 3-6 It is matched on the inside of barrel；

The distal end output shaft 3-2 is gear shaft, and section is crosswise, and gear parts 3-2-2 is located at the side of axis, The side is one end far from cutting drum；Distal end output shaft 3-2 close to one end of gear parts 3-2-2 by bearing be fixed on into On water end (W.E.) lid 1-3-3, gear parts are meshed with master gear 2-14, and the number of teeth of the gear parts is less than the tooth of master gear 2-14 Number (playing the role of speedup)；The distal end output shaft 3-2 is the tip of the axis close to one end of roller, is set on the end with teeth Shape spline；The optical axis portion of the distal end output shaft 3-2 is longer, this section of diameter is less than the diameter of the axis gear part, described Distal end output shaft 3-2 sequentially passes through middle part roller 3-6, concentric bearings group 3-3, abutment sleeve 3-14, end from gear end to end End bearing group 3-10 and distal end supporting rack 3-7；The distal end supporting rack 3-7 is round table-like, and tooth form flower is set as in the middle part of endoporus Keyhole 3-7-1, for the end spline fitted with distal end output shaft 3-2；

As shown in Fig. 7 a~7b, the distal end supporting rack 3-7 is towards being provided with equally distributed one group on the end face of coal wall Distal end roller 3-9 and distal end supporting rack 3-7 are connected into an entirety by threaded hole 3-7-3 by bolt, and by distal end roller 3- 9 end cavity seals and (prevents the foreign matters such as broken coal from entering, the space of sealing liquid is provided for spraying system)；The distal end The stack shell of roller 3-9 is equipped with 2 helical blades, and the helix angle of helical blade is 12 ° to 20 °, be disposed on blade pick (compared with Small helix angle is conducive to the axial flowing of coal)；

On the left side gear axis 2-1, one 2-2 of idle pulley, right side gear axis 2-3, two 2-4 of idle pulley and total input shaft 2-5 Gear axis be mutually parallel, and in gear face is generally aligned in the same plane, be arranged in cutting units babinet 1-3 close to the one of coal wall So as to change the power transmission route of traditional cutting units rocking arm, enough skies are left for deceleration mechanism, the arrangement of roller for side Between.

The total shaft parts of the input shaft 2-5 far from gear one end is equipped with the shaft shoulder, for installing carrying sleeve 2-5-2；Institute The inner ring of outer wall and loading bearing group 2-17 for stating carrying sleeve 2-5-2 coordinates；The loading bearing group 2-17 is two cylinders Roller bearing, bearing outer ring are fixed in bearing block 2-16；The bearing block 2-16 is provided with a pair of of threaded hole on the shell, Wing plate 2-5-3 will be positioned by bolt to be mounted on the shell, the positioning wing plate 2-5-3 is also mounted on cutting units babinet simultaneously (constraint loading bearing group 2-17 is by planetary gear speed reducing mechanism 2-6 in the position of cutting units babinet 1-3 in the particular groove of 1-3 There is provided the positioning end face needed for assembling).

The master gear 2-14 and pinion 2-15 is mounted side by side on Speed allotment axis 2-13, on adjacent spoke face It is both provided with identical bellmouth；Distribution radius of the bellmouth on two gears, size and quantity are completely the same；Double-conical-surface Positioning pin 2-13-1 coordinates respectively with the bellmouth on the master gear 2-14 and pinion 2-15, and two gears are connected as one A entirety so that power is transmitted to pinion 2-15 by master gear 2-14, and the movement of two gears is completely the same.

As shown in Fig. 3 a~3c, the middle part output shaft 3-1 is gear shaft structure, whole to be in hollow tubular and be provided with axial direction Through-hole 3-1-1 is arranged in same axis direction mounted on the end of cutting units babinet 1-3 and with cutting drum；Middle part output shaft The gear parts 3-1-2 of 3-1 is located remotely from one end of cutting drum；The middle part output shaft 3-1 stretches out main shaft end cap 1-3-1 portions Cooperation plane 3-1-3, midfoot support frame 3-5 parallel to each other and the cooperation plane 3-1-3 phases there are two being set on the outer wall divided Mutually cooperation, so as to constrain the relative rotation of midfoot support frame 3-5 and middle part output shaft 1-3 circumferencial directions.Middle part output shaft 3-1 with Midfoot support frame 3-5 is not only connected by the bolt of end face but also is matched using plane 3-1-3, and cooperation plane 3-1-3 can make Coordinate even closer, midfoot support frame can also be made to bear the circumference torque of bigger, make midfoot support frame stress evenly, drop simultaneously The suffered reliability and service life for shearing, improving equipment of low bolt.

As shown in Fig. 6 a~6b, 6 threaded hole 3-2-1, bolt are provided in the distal end faces of the distal end output shaft 3-2 3-13 passes through 6 through-holes on round platen 3-12, is assemblied on 6 threaded hole 3-2-1 (constraint distal end output shaft 3- The axial relative movement of 2 and distal end supporting rack 3-7)；The circle platen is assemblied in the end face counterbore 3-7- of distal end supporting rack 3-7 In 2.

The distal end output shaft 3-2 is hollow-core construction, and center is installed with a rigid water pipe 3-8；Water pipe 3-8 sides connect On intake end cover 1-3-3, opposite side stretches out the end of distal end output shaft 3-2, and passes through screw thread and be connected with nozzle 3-8-1； The nozzle is located at low speed the tip of the axis, and is enclosed in the inner chamber body of distal end roller 3-9, is the spraying system of distal end roller 3-9 System supplies water, and nozzle is not installed on the middle part roller 3-6.

The concentric bearings group 3-3 is two taper roll bearings to dress, outer ring and the inner wall of middle part output shaft 3-1 The major diameter fit of the intermediate shaft part 3-2-3 of cooperation, inner ring and distal end output shaft 3-2；The positioning bearing 3-4 is biserial circular cone Roller bearing, the outer wall of the bearing inner race and middle part output shaft 3-1 coordinate, and outer ring coordinates with cutting units babinet 1-3；

The positioning bearing 3-4 is located at cutting units babinet 1-3 ends, and outer ring is positioned by main shaft end cap 1-3-1；It is described Main shaft end cap 1-3-1 is bolted on the end of cutting units babinet 1-3, and it is defeated slightly larger than middle part that bore dia is opened at center The outer diameter of shaft 3-1；The middle part one end of output shaft 3-1 far from gear parts is stretched out from the through-hole of main shaft end cap 1-3-1；

As shown in Fig. 4 a~4b, the shell 3-5-1 sections of the midfoot support frame 3-5 are flute profile, in bitubular wall construction, I.e. entirety in tubbiness and is provided with axially extending bore 3-5-2, and one section of inner tube wall 3-5-3 is provided in bucket；The inner tube wall 3-5-3's Internal diameter is slightly larger than end face through-hole diameter, and outer diameter is less than the internal diameter of main body barrel, and inner tube wall 3-5-3 is used for and end bearing group The bearing outer ring of 3-10 matches, and using the ladder shoulder 3-5-5 on its inner wall to the bearing of the end bearing group 3-10 outside Circle is constrained.The midfoot support frame 3-5 is provided with one group of radial through-hole 3-5-4；The middle part output shaft 3-1 is provided with similarly Radial through-hole 3-1-4, and two groups of through-holes, along identical radial arrangement, two axially position pin 3-15 are respectively from the two of two groups of through-holes Side is inserted, and midfoot support frame 3-5 and middle part output shaft 3-1 are fixed into an entirety, constrains the axially opposing fortune of the two It is dynamic.

As shown in Fig. 5 a~5c, middle part roller 3-6 Cylinder wall structures in pairs are provided with axially extending bore 3-6-1, outer tube wall Extend to the direction far from coal wall, the end section of cutting units babinet 1-3 is wrapped in cylinder, inner tube wall is opened there are two diameter To through-hole 3-6-4, assembly space is provided for axially position pin 3-5-1；1-3 items are disposed on the outer wall of the middle part roller 3-6 Helical blade 3-6-2, the helix angle of helical blade is 20 ° to 30 °, and pick 3-6-3 is disposed on blade and (improves roller to coal The axial conveying capacity of block)；

One end of the longest shaft part 3-2-4 of the distally mounted output shaft 3-2 of abutment sleeve 3-14；The abutment sleeve Side bearing inner race of the 3-14 both sides of the face respectively with concentric bearings group 3-3 and end bearing group 3-10 is in contact.

The rotating speed of the distal end roller 3-6 is 1.5-3 times of middle part roller 3-9 rotating speeds.The helical blade of middle part roller 3-6 Helix angle be more than distal end roller 3-9 helical blades helix angle；The axial length of the distal end roller 3-9 is that middle part is rolled 1-4 times of cylinder axial length.Based on the axial conveying effect of front end roller, while front end roller participates in the part of coal cutting more It is long.

One cutting drum is separated into a distal end and rolled by a kind of winning machine cutting part of double speed roller provided by the invention Cylinder and a middle part roller, and can realize that two parts roller coaxial differential rotates.The distal end drum rotation speed nearer from coal wall compared with Height has higher coal cutting efficiency, and helical blade lift angle is smaller, and cornerite is larger so that coal cinder obtains more axial forces, has more preferable Axial mobility；Middle part drum rotation speed is relatively low, and helix angle is larger, therefore can be provided more to convey the coal cinder to come Tangential force increases ejection velocity, coal cinder is made preferably to fall on drag conveyor, reduces float coal situation, since middle part roller turns Speed is relatively low, and helical blade lift angle is larger, therefore arranges that 1-3 pieces helical blade still will not block two parts roller intersection Defeated coal gap will not hinder the flowing of coal cinder, while more helical blades can ensure the continuity to coal cinder active force, drop The pulsation of low helical feed improves the defeated coal effect of roller.

The above is only the preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill people of the art For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should It is considered as protection scope of the present invention.

Claims (10)

1. a kind of winning machine cutting part with double speed roller, which is characterized in that driven including cutting units babinet (1-3), motor Portion, gear drive portion, roller output section；

Wherein, the motor driving part includes left cutting motor (1-1) and right cutting motor (1-2), and the two is arranged in cutting In portion's babinet (1-3)；The gear drive portion includes the left side gear axis (2-1), the idle pulley that are arranged in cutting units babinet (1-3) One (2-2), right side gear axis (2-3), idle pulley two (2-4), total input shaft (2-5), planetary gear speed reducing mechanism (2-6), one-stage gear Axis (2-7), secondary gear wheel shaft (2-8), input gear (2-9), output gear (2-10), three-level optical axis (2-11), constant speed gear (2-12), Speed allotment axis (2-13), master gear (2-14), pinion (2-15)；

The left side gear axis (2-1) and the output shaft of left cutting motor (1-1) are connected, gear parts and idle pulley one (2-2) is meshed；It the idle pulley one (2-2) and is meshed, and right side gear axis with the gear parts of right side gear axis (2-3) The output shaft of (2-3) and right cutting motor (1-2) are connected；It the right side gear axis (2-3) and is mutually nibbled with idle pulley two (2-4) It closes, and idle pulley two (2-4) is meshed with the gear parts of total input shaft (2-5)；Total input shaft (2-5) is gear shaft, One end and the input shaft of planetary gear speed reducing mechanism (2-6) far from gear are connected；The input of the planetary gear speed reducing mechanism (2-6) Axis is located at same axis direction with output shaft, and output shaft is connected with one-stage gear axis (2-7)；The one-stage gear axis The gear parts of (2-7) are meshed with the input gear (2-9) on secondary gear wheel shaft (2-8), are set on secondary gear wheel shaft (2-8) There are two sections of gears, the wherein larger gear of radius is input gear (2-9), and the smaller gear of radius is output gear (2-10)； Output gear (2-10) on the secondary gear wheel shaft (2-8) is mutually nibbled with the constant speed gear (2-12) on three-level optical axis (2-11) It closes, and constant speed gear (2-12) and is meshed with the master gear (2-14) on Speed allotment axis (2-13)；

The roller output section includes middle part output shaft (3-1), distal end output shaft (3-2), concentric bearings group (3-3), locating shaft Hold (3-4), midfoot support frame (3-5), middle part roller (3-6), distal end supporting rack (3-7), distal end roller (3-9), end bearing Group (3-10), abutment sleeve (3-14)；

The gear parts (3-1-2) of the middle part output shaft (3-1) and pinion (2-15) phase on Speed allotment axis (2-13) Engagement, the number of teeth are more than the number of teeth of pinion (2-15)；The middle part output shaft (3-1) is cylindric, concentric bearings group (3-3) It is separately fixed at positioning bearing (3-4) on the shaft shoulder of middle part output shaft (3-1) inner wall and outer wall；Middle part output shaft (the 3- 1) end is matched with the inner wall of midfoot support frame (3-5), and the outer wall of midfoot support frame (3-5) and middle part roller (3-6) Inner wall be fixedly connected；The distal end output shaft (3-2) is gear shaft, and gear parts are meshed with master gear (2-14), The number of teeth is less than the number of teeth of master gear (2-14)；The one end of the distal end output shaft (3-2) far from gear sequentially passes through middle part roller (3-6), concentric bearings group (3-3), abutment sleeve (3-14), end bearing group (3-10) and it is interior with distal end supporting rack (3-7) Wall matches, and the outer wall of distal end supporting rack (3-7) and the inner wall of distal end roller (3-9) are connected.

A kind of 2. winning machine cutting part with double speed roller according to claim 1, which is characterized in that the left side tooth Wheel shaft (2-1) and left cutting motor (1-1) output shaft, right side gear axis (2-3) and right cutting motor (1-2) output shaft, planet It is realized and is connected by spline between deceleration mechanism (2-6) output shaft and one-stage gear axis (2-7)；

The one end of total input shaft (2-5) far from gear is provided with spline, and threaded hole, planetary reducer are provided in spline Mutually perforative through-hole is provided in the input of structure (2-6), output shaft, the bolt (2-5-1) across through-hole is connected in the threaded hole, And be connected with the input shaft of planetary gear speed reducing mechanism (2-6), planetary gear speed reducing mechanism (2-6) is with total input shaft (2-5) while also leads to Spline is crossed to match.

A kind of 3. winning machine cutting part with double speed roller according to claim 1, which is characterized in that total input Shaft part of the axis (2-5) far from gear one end is equipped with the shaft shoulder, and carrying sleeve (2-5-2) is equipped at the shaft shoulder；The carrying set Loading bearing group (2-17) is socketed on the outside of cylinder (2-5-2), bearing block (2-16) is provided at bearing outer ring；The bearing block A pair of of threaded hole is provided on (2-16), it is solid by bolt and the positioning wing plate (2-5-3) on cutting units babinet (1-3) Fixed connection.

A kind of 4. winning machine cutting part with double speed roller according to claim 1, which is characterized in that the input tooth The number of teeth for taking turns (2-9) is 1.5-2.5 times of one-stage gear axis (2-7) gear number of teeth；The diameter of the input gear (2-9) is 1.5-2.5 times of output gear (2-10) diameter, the modulus of output gear (2-10) are 1.5-2 times of input gear (2-9).

A kind of 5. winning machine cutting part with double speed roller according to claim 1, which is characterized in that the speed point It is mandrel with axis (2-13), two groups of double-row conical bearings is installed on axis, the quantity of every group of double-row conical bearing is Two, the bearing outer ring of one of which bearing is matched with pinion (2-15), the bearing outer ring and master gear of another group of bearing (2-14) is matched；

The master gear (2-14) is mounted side by side on pinion (2-15) on Speed allotment axis (2-13), adjacent spoke face On be both provided with corresponding bellmouth, pass through Double-conical-surface positioning pin (2-13-1) and the master gear (2-14) and pinion (2- 15) two gears are connected as an entirety by the bellmouth cooperation on.

A kind of 6. winning machine cutting part with double speed roller according to claim 1, which is characterized in that the middle part branch There are four bolts hole (3-5-6) for setting on the end face of support (3-5), correspond to and are also equipped with four on the end face of middle part roller (3-6) The identical counter sink (3-6-5) of a distribution, by dormant bolt (3-11) across counter sink (3-6-5) and the bolt hole (3-5- 6) coordinate, midfoot support frame (3-5) and middle part roller (3-6) are connected into an entirety, while midfoot support frame (3-5) is outer Wall on the inside of channel-shaped shape face and the barrel of middle part roller (3-6) by matching.

A kind of 7. winning machine cutting part with double speed roller according to claim 1, which is characterized in that the distal end branch Support (3-7) is round table-like, and tooth form splined hole (3-7-1) is set as in the middle part of endoporus, is spent with the end of distal end output shaft (3-2) Key matches；Threaded hole (3-2-1), and distal end supporting rack (3-7) are evenly equipped in the distal end faces of the distal end output shaft (3-2) On end face counterbore (3-7-2) in be provided with round platen (3-12), this is connected to by bolt-through circle platen (3-12) In threaded hole (3-2-1), the axial restraint of distal end output shaft (3-2) and distal end supporting rack (3-7) is realized；The distal end supporting rack Equally distributed one group of threaded hole (3-7-3) is provided in the end face outside of (3-7), by bolt by distal end roller (3-9) and Distal end supporting rack (3-7) connects into an entirety, and the end cavity of distal end roller (3-9) is sealed.

8. a kind of winning machine cutting part with double speed roller according to claim 1, which is characterized in that the distal end is defeated Shaft (3-2) is hollow-core construction, and center is installed with a rigid water pipe (3-8)；Described rigidity water pipe (3-8) side is connected into water On end cap (1-3-3), opposite side stretches out the end of distal end output shaft (3-2), and passes through in screw thread and distal end roller (3-9) cavity Nozzle (3-8-1) be connected.

A kind of 9. winning machine cutting part with double speed roller according to claim 1, which is characterized in that the concentric shafts It is to two taper roll bearings of dress to hold group (3-3), and outer ring and the inner wall of middle part output shaft (3-1) coordinate, inner ring with Intermediate shaft part (3-2-3) cooperation of distal end output shaft (3-2)；The bearing (3-4) that positions is double-row conical bearing, axis The outer wall for holding inner ring and middle part output shaft (3-1) coordinates, and bearing outer ring coordinates with cutting units babinet (1-3)；

Abutment sleeve (3-14) both sides of the face respectively with concentric bearings group (3-3), a side axle of end bearing group (3-10) Inner ring is held to be in contact；The midfoot support frame (3-5) is in bitubular wall construction, inner tube wall (3-5-3) and end bearing group (3- 10) bearing outer ring matches；One group of radial through-hole (3-5-4) is provided on midfoot support frame (3-5) double barrel wall, middle part is defeated Corresponding radial through-hole (3-1-4) is provided on shaft (3-1), is inserted into two groups of through-holes by axially position pin (3-15), by Portion's supporting rack (3-5) and middle part output shaft (3-1) are fixed into an entirety.

A kind of 10. winning machine cutting part with double speed roller according to claim 1, which is characterized in that the distal end 2 helical blades are provided on roller (3-9), the helix angle of helical blade is 12 ° to 20 °, and arranged on helical blade There is pick；1-3 helical blade is disposed on the outer wall of the middle part roller (3-6), the helix angle of helical blade is 20 ° To 30 °, and pick is disposed on helical blade；

The helix angle of helical blade is more than the spiral liter of helical blade on distal end roller (3-9) on the middle part roller (3-6) Angle；The rotating speed of the distal end roller (3-9) is 1.5-3 times of middle part roller (3-6) rotating speed, and the axial direction of distal end roller (3-9) Length is 1-4 times of middle part roller axial length.