CN110374588A - The adjustable rocker arm of coal mining machine of underneath clearance and coalcutter - Google Patents
The adjustable rocker arm of coal mining machine of underneath clearance and coalcutter Download PDFInfo
- Publication number
- CN110374588A CN110374588A CN201910673812.5A CN201910673812A CN110374588A CN 110374588 A CN110374588 A CN 110374588A CN 201910673812 A CN201910673812 A CN 201910673812A CN 110374588 A CN110374588 A CN 110374588A
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- cantilever crane
- transition frame
- rocker arm
- hole
- pin
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- 239000003245 coal Substances 0.000 title claims abstract description 60
- 238000005065 mining Methods 0.000 title claims abstract description 41
- 230000007704 transition Effects 0.000 claims abstract description 121
- 238000009434 installation Methods 0.000 claims abstract description 65
- 238000005520 cutting process Methods 0.000 claims abstract description 16
- 230000013011 mating Effects 0.000 claims abstract description 13
- 238000009826 distribution Methods 0.000 claims abstract description 4
- 230000001681 protective effect Effects 0.000 claims description 9
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000002452 interceptive effect Effects 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
- E21C25/06—Machines slitting solely by one or more cutting rods or cutting drums which rotate, move through the seam, and may or may not reciprocate
- E21C25/08—Mountings for the rods or drums
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C31/00—Driving means incorporated in machines for slitting or completely freeing the mineral from the seam
- E21C31/08—Driving means incorporated in machines for slitting or completely freeing the mineral from the seam for adjusting parts of the machines
Abstract
The present invention relates to a kind of adjustable rocker arm of coal mining machine of underneath clearance and coalcutters, the rocker arm includes transition frame and cantilever crane, one end of transition frame is equipped with upper and lower two groups of ear mounts, it docks at other end cutting motor close with cantilever crane end or so, transition frame and cantilever crane are fixed by threaded fastener, isodiametric transition frame pin hole and cantilever crane pin hole are respectively equipped on the interface of transition frame and cantilever crane, transition frame pin hole has two groups up and down, or, cantilever crane pin hole has two groups up and down, every group of pin hole includes two pin holes of time interval distribution, under installation condition, one group of transition frame pin hole and one group of cantilever crane pin hole cooperate with one group of master positioning pin simultaneously, one group of auxiliary pin is installed in remaining one group of transition frame pin hole or cantilever crane pin hole；The rocker arm of the coalcutter uses the adjustable rocker arm of coal mining machine of above-mentioned underneath clearance.The present invention is convenient to realize the adjusting of underneath clearance below cantilever crane, and the mating arrangement for coalcutter and drag conveyor, bracket provides biggish flexibility.
Description
Technical field
The present invention relates to a kind of rocker arm of coal mining machine and coalcutters, and underneath clearance is adjustable, are primarily adapted for use in high-power coal mining
Machine exploits the occasion of thin seam working surface, belongs to well work coal-cutting machinery technical field.
Background technique
As the reliability requirement of thin seam mining equipment is higher and higher, mining height range is more and more wider, and girdle is adopted
Coal machine power is also increasing, and the especially cutting motor of rocker arm of coal mining machine and transmission system size is also increasing, mining height model
Enclose it is very wide, after height seam mining on drag conveyor under coalcutter cross coal spatial altitude it is more and more nervous.
Common rocker structure needs while meeting the exploitation in low coal seam Yu high coal seam, and crossing coal space must be by high coal seam mistake
Coal amount constrains, therefore for the high-power wide scope coalcutter of (compared with) girdle scope, crosses coal using what conventional design obtained
Space is less than normal, influences the mating arrangement of coalcutter and drag conveyor, bracket, brings very big Structure Designing Problem.
In view of the above-mentioned problems, also attempting in the industry by changing jib structure, by the cutting motor of cantilever crane and mounting structure portion
Set up separately to set and be solved the above problems in coal wall side with motor cantilevered fashion, although this structure cross coal space can be bigger, coal wall side
The cutting motor power of setting can also be made greatly, but the problem of bringing is exactly the variation of production practice: need front arm
Lower layer's coal is adopted, the space that cantilever part passes through is cut out, rear arm adopts day-coal, brings load that effect is poor, maximum exploits in this way
The problem of highly small, narrow range, (compared with) thin seam mining of wide scope is not adapted to still.
Summary of the invention
The object of the present invention is to provide a kind of adjustable rocker arm of coal mining machine of underneath clearance and coalcutter, underneath clearance can be square
Just it adjusts, therefore can solve the low seam mining machinery of high-power wide scope and the structure Layout Problem of drag conveyor, bracket.
Main technical schemes of the invention have:
A kind of adjustable rocker arm of coal mining machine of underneath clearance, including transition frame and cantilever crane, one end of the transition frame are equipped with
Upper and lower two groups of ear mounts, other end cutting motor close with the cantilever crane end or so are docked, and the transition frame and cantilever crane pass through screw thread
Fastener is fixed, and isodiametric transition frame pin hole and cantilever crane pin hole, institute are respectively equipped on the interface of the transition frame and cantilever crane
Stating transition frame pin hole has two groups up and down, alternatively, the cantilever crane pin hole has two groups upper and lower, every group of transition frame pin hole and cantilever crane pin hole
It include two pin holes of time interval distribution, under installation condition, one group of transition frame pin hole and one group of cantilever crane pin hole are simultaneously with one
Group master positioning pin cooperates, and is equipped with one group of auxiliary pin in remaining one group of transition frame pin hole or cantilever crane pin hole.
Two boss up and down, the middle part of the interface of the transition frame are also provided in the middle part of the interface of the cantilever crane
Be correspondingly provided with two groups of grooves up and down, every group of groove includes a upper groove and a lower groove, under installation condition, it is described up and down
Two boss and wherein one group of groove are corresponding mating, the distance up and down of two groups of grooves and two groups of transition frame pin holes or two groups
The center of cantilever crane pin hole is away from equal.
The center of two groups of transition frame pin holes or two groups of cantilever crane pin holes is away from the diameter that can be less than corresponding pin hole, such case
Under, the master positioning pin preferably uses complete straight pin, and the auxiliary pin then uses notched straight pin.
The adjustable rocker arm of coal mining machine of underneath clearance can also include accessory plate, and the accessory plate can be cross section
Strip structure triangular in shape, the accessory plate front-rear direction extends, and, the accessory plate relatively fixed with the transition frame
The interface of one side and the cantilever crane fit, another side fits with the top surface of the transition frame or bottom surface.
The threaded fastener has more sets, and every suit includes studs, square nut, round nut and protective nut, institute
It states transition frame and is equipped with multiple left and right transition frame bolts hole extended and the round nut installation cavity communicated therewith, round nut installation
Chamber is located at close to one end of ear mount, and the cantilever crane is equipped with bolt hole under the cantilever crane upper bolt hole and cantilever crane that multiple left and right extend
And the square nut installation cavity communicated with bolt hole under cantilever crane upper bolt hole and cantilever crane, spiral shell under the cantilever crane upper bolt hole, cantilever crane
Keyhole is communicated with the square nut installation cavity, the threaded fastener and transition frame bolt hole, round nut installation cavity, cantilever crane
Bolt hole and square nut installation cavity correspond under upper bolt hole, cantilever crane, and under installation condition, the studs, which passes through, to be corresponded to
Round nut installation cavity, transition frame bolt hole, bolt hole under square nut installation cavity and cantilever crane upper bolt hole or cantilever crane, one
End is threadedly coupled with the square nut, and the other end is successively threadedly coupled with the round nut and protective nut from inside to outside, left and right
On direction, the square nut is limited in the square nut installation cavity, and the round nut is limited in the round nut installation cavity
It is interior.
The square nut is preferably used such as flowering structure: which is provided with the threaded hole of one or so extension, the threaded hole to institute
State the central horizontal face of the short transverse of square nut distance be equal to the center of two groups of transition frame pin holes or two groups of cantilever crane pin holes away from
Half.
A kind of adjustable coalcutter of underneath clearance, including fuselage, left rocker arm and right rocker arm, the left rocker arm and right rocker arm
Using the adjustable rocker arm of coal mining machine of the underneath clearance, the transition frame of the left rocker arm and right rocker arm passes through respective top
One group of one the first from left right side of ear mount is hinged on the fuselage, and the transition frame of the left rocker arm and right rocker arm passes through respective lean on respectively
Next group of one the first from left right side of ear mount is hinged on one end of left oil cylinder and right oil cylinder, and the other end of the left oil cylinder and right oil cylinder is respectively
It is hinged with the fuselage.
The beneficial effects of the present invention are:
The present invention is positioned and is fastenedly connected by using upper and lower multiposition is adjustable, realizes that cantilever crane can be with respect to transition frame upper
It installs and fixes on lower different height, so that being convenient to realize the adjusting of underneath clearance below cantilever crane on same rocker arm, to be
The low seam mining machinery of high-power width limit of mining is provided great flexibility with drag conveyor, the mating of bracket.
Positioning of the invention, connection structure are simple, and it is more convenient that field modification configures operation.
Detailed description of the invention
Fig. 1 is structural schematic diagram when one embodiment of rocker arm of the invention is in cantilever crane underlying state；
Fig. 2 is the left view of Fig. 1；
Fig. 3 is the K1-K1 cross-sectional view (adjustable positioning pin) of Fig. 2；
Fig. 4 is the K2-K2 cross-sectional view (transition frame) of Fig. 1；
Fig. 5 is the K3-K3 cross-sectional view (cantilever crane) of Fig. 1；
Fig. 6 is the K4-K4 cross-sectional view of Fig. 2；
Fig. 7 is the K5-K5 cross-sectional view (auxiliary positioning) of Fig. 2；
Fig. 8 is the K6-K6 cross-sectional view of Fig. 2；
Fig. 9 is that embodiment illustrated in fig. 1 is on cantilever crane structural schematic diagram when setting state；
Figure 10 is the left view of Fig. 9；
Figure 11 is the K7-K7 cross-sectional view (adjustable positioning pin) of Figure 10；
Figure 12 is the K8-K8 cross-sectional view of Figure 10；
Figure 13 is the K9-K9 cross-sectional view (auxiliary positioning) of Figure 10；
Figure 14 a is the scheme of installation of the square nut；
Figure 14 b is the A-A cross-sectional view of Figure 14 a；
Figure 15 is the structural schematic diagram of the adjustable positioning pin junction of another embodiment of the invention；
Figure 16 be another embodiment of the invention cantilever crane upper bolt hole and cantilever crane under bolt hole structural schematic diagram.
Figure 17 a be using the underlying state of cantilever crane the mating coal conveyer of coalcutter of the invention coal loading height with
Delivery head schematic diagram；
Figure 17 b is the top view of Figure 17 a；
Figure 18 be using the mating coal conveyer of the coalcutter of the invention that state is set on cantilever crane coal loading height with
Delivery head schematic diagram.
Detailed description of the invention:
1. transition frame；10. cable-through hole；11. every group of transition frame pin hole；13. lower groove；14. upper groove；15. transition frame spiral shell
Keyhole；16. round nut installation cavity；
2. cantilever crane；20. crossed beam trunking；21. every group of cantilever crane pin hole；22. boss；23. bolt hole under cantilever crane；24. spiral shell on cantilever crane
Keyhole；25. square nut installation cavity；251. fillet；26. motor installation cavity；
3. adjustable positioning pin；31. master positioning pin；32. auxiliary pin；
4. threaded fastener；41. studs；42. round nut；43. square nut；431. threaded hole；432. chamfering；433.
The central horizontal face of short transverse；44. protective nut；
5. accessory plate；
91. fuselage；92. the left rocker arm of underlying cantilever crane；93. the right rocker arm of underlying cantilever crane；The left rocker arm of cantilever crane is set on 92 '；
The right rocker arm of cantilever crane is set on 93 '；99. drag conveyor.
Specific embodiment
The invention discloses a kind of adjustable rocker arm of coal mining machine of underneath clearance, as illustrated in figs. 1-16, including 1 He of transition frame
Cantilever crane 2, the both ends of the length direction of the cantilever crane are separately installed with cutting motor and cutting drum, therefore this both ends can be distinguished
Referred to as close cutting motor end and nearly cutting drum end.One end of the transition frame is equipped with for hinged with coalcutter fuselage
Lower two groups of ear mounts, other end cutting motor close with the cantilever crane end or so is docked, and transition frame and cantilever crane pass through screw threads for fastening
Part 4 is fixed.Isodiametric transition frame pin hole 11 and cantilever crane pin hole 21 are respectively equipped on the interface of the transition frame and cantilever crane,
The transition frame pin hole has two groups up and down, alternatively, the cantilever crane pin hole has two groups up and down, every group of transition frame pin hole 11 and every group
Cantilever crane pin hole 21 includes two pin holes of time interval distribution.Under installation condition, one group of transition frame pin hole and one group of cantilever crane pin
Hole cooperates with one group of 31 pin hole of master positioning pin simultaneously, is equipped with one group of auxiliary in remaining one group of transition frame pin hole or cantilever crane pin hole
Pin 32.
In the case where being equipped with upper and lower two groups of transition frame pin holes, cantilever crane pin hole and one group of top mistake described in unique one group
When crossing frame pin hole while cooperating with the master positioning pin, the cantilever crane is top with respect to the position of transition frame, made of installing in this way
Rocker arm of coal mining machine is on cantilever crane and sets state, on the contrary, cantilever crane pin hole described in working as unique one group and one group of transition frame pin hole on the lower
Simultaneously with the master positioning pin cooperate when, the cantilever crane with respect to transition frame position on the lower, in this way installation made of coalcutter shake
Arm is in the underlying state of cantilever crane.The cantilever crane is set when state and cantilever crane underlying state on cantilever crane with respect to the upper-lower height of transition frame
Position is different, and the difference in height of cantilever crane is equal to the center of upper and lower two groups of transition frame pin holes away from that is, upper and lower two groups of mistakes under both states
The center of frame pin hole is crossed away from the variation in altitude amount for having reflected cantilever crane with respect to two kinds of upper and lower positions of transition frame.As shown in figures 1-13
It is the embodiment for being provided with upper and lower two groups of transition frame pin holes, wherein Fig. 1-8 is the underlying state of cantilever crane, and Fig. 9-13 is to set on cantilever crane
State.
In the case where being equipped with upper and lower two groups of cantilever crane pin holes, transition frame pin hole and one group of top arm described in unique one group
Frame pin hole simultaneously with the master positioning pin cooperate when, the cantilever crane with respect to transition frame position on the lower, in this way installation made of adopt
Coal machine rocker arm is in the underlying state of cantilever crane, on the contrary, transition frame pin hole described in working as unique one group and one group of cantilever crane pin hole on the lower are same
When with the master positioning pin cooperate when, the cantilever crane is top with respect to the position of transition frame, in this way installation made of rocker arm of coal mining machine
State is set on cantilever crane.Similarly, the cantilever crane is set when state and cantilever crane underlying state on cantilever crane with respect to the difference in height of transition frame
Equal to upper and lower two groups of cantilever crane pin holes center away from.It is the arm for being provided with the embodiment of upper and lower two groups of cantilever crane pin holes as shown in figure 15
The underlying state of frame.
Master positioning pin and auxiliary pin are collectively referred to as adjustable positioning pin 3.When cantilever crane is underlying, underneath clearance is smaller, when being set on cantilever crane,
Underneath clearance is larger.By cooperating adjustable positioning pin especially master positioning pin from different pin holes, same rocker arm is convenient to
Realize the adjusting of underneath clearance below cantilever crane.
Two boss 22 (referring to Fig. 7) up and down are also provided in the middle part of the interface of the cantilever crane, correspondingly the mistake
The middle part for crossing the interface of frame is equipped with upper and lower two groups of grooves (referring to fig. 4), and every group of groove includes under a upper groove 14 and one
Groove 13, under installation condition, two boss up and down are corresponding mating with wherein one group of groove simultaneously.Set on cantilever crane and
Two boss up and down are corresponding mating from different groups of grooves respectively when the underlying two kinds of installation conditions of cantilever crane, specifically: arm
When setting on frame, upper and lower two boss and one group of top groove are corresponding mating, when cantilever crane is underlying, described upper and lower two
A boss and one group of groove on the lower are corresponding mating, play the role of auxiliary positioning and connection transition frame and cantilever crane with this,
Keep the connection reliability of transition frame and cantilever crane higher.For the normal performance for ensuring the auxiliary positioning and connection function, two groups of grooves
Distance up and down (being both equal to the distance between two upper grooves, be also equal to the distance between two lower grooves) and two groups of transition
The center of frame pin hole or two groups of cantilever crane pin holes is away from equal.Two pin holes in every group of transition frame pin hole and cantilever crane pin hole all divide column
The front and rear sides of boss and recessinterengaging means.
The boss is preferably in elongated strip shaped, and horizontal extension along the longitudinal direction.Due to boss front-rear direction length compared with
Greatly, transition frame is become apparent to the supporting role of cantilever crane.
In the embodiment shown in that figure, two groups of transition frame pin holes (referring to fig. 2,3,4,5,10,11) or two groups of cantilever crane pin holes
The center of (referring to Figure 15) leads to each pin hole or two groups of arms in two groups of transition frame pin holes away from the diameter for being less than corresponding pin hole
Each pin hole in frame pin hole is not complete circular hole.When installation, the master positioning pin uses complete straight pin, rises main
Stress effect, the auxiliary pin use notched straight pin, play Auxiliary support master positioning pin.
The center of two groups of transition frame pin holes or two groups of cantilever crane pin holes is described at this time away from the diameter that can also be greater than corresponding pin hole
Master positioning pin and auxiliary pin are all made of complete straight pin.Master positioning pin 31 plays stress, and auxiliary pin 32 does not rise by masterpiece
With being only used for filling up the second group of transition frame pin hole vacated or second group of cantilever crane pin hole to prevent the corrosion of shotpin hole.
The thickness up and down of usual cantilever crane is larger, and the thickness up and down of transition frame is smaller.When the underlying state of cantilever crane, preferably by transition
Frame and cantilever crane are designed to either flush, and the interface of cantilever crane exceeds transition frame a distance from below, at this time by cantilever crane
Place installation accessory plate 5 of the interface beyond transition frame, can play the role of guiding coal stream.When setting state on cantilever crane, preferably
Transition frame is designed to that bottom surface is concordant with cantilever crane, the interface of cantilever crane exceeds transition frame a distance from top, at this time by
Place installation accessory plate 5 of the interface of cantilever crane beyond transition frame, can avoid its scraping with cantilever crane, simultaneously with guide support
Good protective action is played for cantilever crane interface.
The accessory plate is preferably cross section strip structure triangular in shape, and the accessory plate front-rear direction extends, and with
The transition frame is relatively fixed.The one side of the accessory plate and the interface of the cantilever crane fit, another side with it is described
The top surface or bottom surface of transition frame fit.
The front of the cantilever crane is equipped with motor installation cavity 26 (referring to Fig. 8), for accommodating cutting motor, before the cantilever crane
The middle part of rear direction is equipped with crossed beam trunking 20 (referring to Fig. 5,6), and the motor installation cavity is provided on the interface of cantilever crane and crosses line
The opening of slot.The transition frame is equipped with cable-through hole 10 (referring to fig. 4), for providing the channel of rocker arm cable.The cable-through hole
It is opened on the interface of transition frame, the crossed beam trunking is communicated with cable-through hole.
There are two upper one group of ear mounts in the transition frame, is spaced cloth in the entire width range of front-rear direction of transition frame
It sets, next group of ear mount in the transition frame has one, is arranged in the rear portion of transition frame.The axis anterior-posterior horizontal of each ear mount prolongs
It stretches.
The transition frame and cantilever crane are achieved a fixed connection by the way that the threaded fastener 4 is arranged at interface.The spiral shell
Line fastener has more sets, and every suit includes studs 41, square nut 43, round nut 42 and protective nut 44.The transition
Frame is equipped with multiple left and right transition frame bolts hole 15 extended and the round nut installation cavity 16 communicated therewith, round nut installation cavity
Positioned at one end close to ear mount, the cantilever crane is equipped with bolt hole under the cantilever crane upper bolt hole 24 and cantilever crane that multiple left and right extend
23 and the square nut installation cavity 25 that is communicated with bolt hole under cantilever crane upper bolt hole and cantilever crane, the cantilever crane upper bolt hole, cantilever crane
Lower bolt hole is communicated with the square nut installation cavity.The threaded fastener and transition frame bolt hole, round nut installation cavity,
Bolt hole and square nut installation cavity correspond under cantilever crane upper bolt hole, cantilever crane.Under installation condition, the studs is passed through
Bolt hole under corresponding round nut installation cavity, transition frame bolt hole, square nut installation cavity and cantilever crane upper bolt hole or cantilever crane,
One end is threadedly coupled with the square nut, and the other end is successively threadedly coupled with the round nut and protective nut from inside to outside,
On left and right directions, the square nut is limited in the square nut installation cavity, and the round nut is limited in the round nut installation
It is intracavitary.When installation, one end of studs first connects stretcher beyond the thread segment of round nut certain length, after stretching fastening
Again with the protection of protective nut 44.
When setting on cantilever crane, studs wears bolt hole under cantilever crane, and when cantilever crane is underlying, studs wears bolt on cantilever crane
Hole, the arrangement of bolt hole 23 is referring to Figure 16 under cantilever crane upper bolt hole 24 and cantilever crane.Under cantilever crane upper bolt hole and cantilever crane on bolt hole
Lower face, the distance between the two are equal to the centers of upper and lower two groups of transition frame pin holes away from or equal in upper and lower two groups of cantilever crane pin holes
The heart away from.
In the embodiment shown in that figure, is shared on the interface of the transition frame and cantilever crane and the threaded fastener is set at eight
4 are fixedly connected.It can be arranged to different specifications according to the difference in the design feature and size of its position everywhere.
About the fixed connection structure of the transition frame and cantilever crane, one or in any combination can selected following aspects
It is further optimized design:
1) in the case that when setting underlying with cantilever crane on cantilever crane, cantilever crane is not very big with respect to the variation in altitude amount of transition frame, arm
Bolt hole can use cross section instead and be replaced by the waist-shaped hole structure that length direction extends up and down under frame upper bolt hole and cantilever crane, quite
Bolt hole is up and down (referring to fig. 2,4,5,6,8,10,12) under cantilever crane upper bolt hole and cantilever crane.
2) the round nut installation cavity is opened on the left or right end face of transition frame.The opening of the square nut installation cavity is set
It sets on the cantilever crane side near square nut installation cavity, such as can be top surface, bottom surface, leading flank or the trailing flank of cantilever crane,
To facilitate being put into for square nut.
3) shapes and sizes of the square nut installation cavity are arranged to play anti-rotation position-limiting action to the square nut
Shapes and sizes, it is preferred to use be equal or slightly larger than the rectangular chamber of square nut, utilize the side wall side of limitation well of chamber
The rotation of nut in perpendicular.
4) square nut preferably uses symmetrical square nut, and structure is as follows: the square nut is equipped with one or so and prolongs
The distance of the threaded hole 431 stretched, the central horizontal face 433 of the short transverse of the threaded hole to the square nut is equal to two groups of mistakes
Cross the center of frame pin hole or two groups of cantilever crane pin holes away from half.When needs are set on cantilever crane between the underlying two states of cantilever crane
When switching, it is only necessary to be threadedly coupled again i.e. after symmetrical square nut is rotated in a vertical plane 180 degree i.e. turned upside down
It can.
Using the symmetrical square nut, does not need to open up two threaded holes on square nut, thus avoid screw thread bore dia
It is larger and interfering causes structure that can not be arranged, it also avoids to prevent two threaded holes from interfering caused square nut
Volume is excessive, it is thus also avoided that the strength reduction of square nut.
For being opened on the square nut installation cavity of cantilever crane top surface, the distance of cantilever crane upper bolt hole 24 to cantilever crane top surface preferably with
The slot bottom of bolt hole 23 to square nut installation cavity 25 is equidistant under cantilever crane；Similarly, for being opened on the square spiral shell of cantilever crane bottom surface
Female installation cavity, under cantilever crane bolt hole 23 to cantilever crane bottom surface distance preferably with cantilever crane upper bolt hole 24 to square nut installation cavity 25
Groove top be equidistant, in order to which the turned upside down of symmetrical square nut is installed.
5) corner of the square nut installation cavity is preferably provided to fillet 251.The square nut periphery is preferably provided with chamfering
432, interfere to avoid with fillet 251.
The invention also discloses a kind of adjustable coalcutters of underneath clearance, as shown in Figure 17,18, including fuselage 91, a left side
Rocker arm and right rocker arm, the left rocker arm and right rocker arm are all made of the adjustable rocker arm of coal mining machine of underneath clearance above-mentioned, the left side
The transition frame of rocker arm and right rocker arm is hinged on the fuselage by respective top one group of ear mount, one the first from left right side, and the left side is shaken
The transition frame of arm and right rocker arm is hinged on the one of left oil cylinder and right oil cylinder by next group of one the first from left right side of ear mount by respective respectively
The other end of end, the left oil cylinder and right oil cylinder is respectively hinged with the fuselage.Oil cylinder is flexible, and corresponding rocker arm can be driven opposite
Fuselage is swung around top one group of ear mount hole axle, ultimately forms the different high and low positions of the cutting drum on corresponding rocker arm, Ke Yishi
Different coal thickness is answered to exploit.
When needing to exploit thinner seam, cantilever crane uses underlying structure.The case where for being equipped with upper and lower two groups of cantilever crane pin holes,
Unique one group of transition frame pin hole and one group of top cantilever crane pin hole cooperate with one group of master positioning pin simultaneously, alternatively, upper for being equipped with
The case where lower two groups of transition frame pin holes, unique one group of cantilever crane pin hole are fixed with one group of master simultaneously with one group of transition frame pin hole on the lower
Position pin cooperation, boss plug-in unit cooperation corresponding with one group of groove on the lower, the studs pass through cantilever crane upper bolt hole.
When needing to exploit thick coal seam, cantilever crane uses and above sets structure.The case where for being equipped with upper and lower two groups of cantilever crane pin holes,
Unique one group of transition frame pin hole cooperates with one group of master positioning pin simultaneously with one group of cantilever crane pin hole on the lower, alternatively, upper for being equipped with
The case where lower two groups of transition frame pin holes, unique one group of cantilever crane pin hole and one group of top transition frame pin hole are fixed with one group of master simultaneously
Position pin cooperation, boss plug-in unit cooperation corresponding with one group of top groove, the studs pass through bolt hole under cantilever crane.
Left rocker arm and right rocker arm shown in Figure 17 a, 17b are in the underlying state of cantilever crane, are referred to as a left side for underlying cantilever crane
The right rocker arm 93 of rocker arm 92 and underlying cantilever crane.Left rocker arm and right rocker arm shown in Figure 18 are on cantilever crane state of setting, and claim respectively
Above to set 92 ' of left rocker arm of cantilever crane and above setting 93 ' of right rocker arm of cantilever crane.
The adjustable coalcutter of underneath clearance of the present invention can root as the high-power coal cutter of thin seam mining
The different adjustment underneath clearance of specific coal seam thickness when according to thin seam mining, in favor of three machines (i.e. coalcutter, drag conveyor
99, bracket) mating arrangement.
For example, when relatively thin thin seam mining, it is small that drag conveyor transports coal production, therefore underneath clearance below cantilever crane
Configurable is smaller, therefore as shown in Figure 17 a, 17b, rocker arm can be adjusted to the underlying state of cantilever crane, while can reach lower
Coalcutter height.The lower limit that the coalcutter is suitable for girdle is exploited, and inside mode can be used in the rotation direction V of roller at this time, is cut
Main coal is taken on by front roll after cutting, although the underneath clearance a below cantilever crane is smaller, coal takes on from drum front end, is loaded
It is substantially unaffected, simultaneously because coal seam is lower, the coal space h excessively under coalcutter (rocker arm) compared with low height can meet use
It is required that.
When thicker thin seam mining, it is relatively large that drag conveyor transports coal production, therefore it is high that coal is crossed below cantilever crane
Degree is largerly configurable, therefore as shown in figure 18, can be adjusted to rocker arm to set state on cantilever crane, at this time coalcutter have compared with
(since mining height is higher, bulk is not substantially by shadow after rocker arm of coal mining machine local height increases for high coalcutter height
It rings).Outside mode can be used in the rotation direction V of roller at this time, and main coal under the rocker arm cantilever crane of front and back by taking on after cutting, due to arm
Underneath clearance A below frame is larger, and loading effect is preferable, simultaneously because coal seam is higher, compared with big height under coalcutter (rocker arm)
It crosses coal space H and is also able to satisfy passing through for the big yield of coal.
As it can be seen that the low seam mining machinery that the present invention is high-power wide limit of mining is mentioned with drag conveyor, the mating of bracket
Very big flexibility is supplied.
Herein referred upper and lower and left and right respectively refers to the upper and lower and left and right under the visual angle Fig. 1, herein referred front and rear difference
Refer to the right and left under the visual angle Fig. 2.
Claims (10)
1. a kind of adjustable rocker arm of coal mining machine of underneath clearance, it is characterised in that: including transition frame and cantilever crane, the transition frame
One end is equipped with upper and lower two groups of ear mounts, and other end cutting motor close with the cantilever crane end or so is docked, the transition frame and cantilever crane
It is fixed by threaded fastener, isodiametric transition frame pin hole and cantilever crane is respectively equipped on the interface of the transition frame and cantilever crane
Pin hole, the transition frame pin hole have two groups up and down, alternatively, the cantilever crane pin hole has two groups upper and lower, every group of transition frame pin hole and arm
Frame pin hole includes two pin holes of time interval distribution, and under installation condition, one group of transition frame pin hole and one group of cantilever crane pin hole are same
Shi Yuyi group master positioning pin cooperates, and is equipped with one group of auxiliary pin in remaining one group of transition frame pin hole or cantilever crane pin hole.
2. the adjustable rocker arm of coal mining machine of underneath clearance as described in claim 1, it is characterised in that: the interface of the cantilever crane
Middle part be equipped with upper and lower two boss, the middle part of the interface of the transition frame is equipped with upper and lower two groups of grooves, and every group of groove includes
One upper groove and a lower groove, under installation condition, two boss and wherein one group of groove up and down are corresponding mating,
The distance up and down of two groups of grooves is with the center of two groups of transition frame pin holes or two groups of cantilever crane pin holes away from equal.
3. the adjustable rocker arm of coal mining machine of underneath clearance as claimed in claim 2, it is characterised in that: the boss is in elongate strip
Shape, and horizontal extension along the longitudinal direction.
4. the adjustable rocker arm of coal mining machine of underneath clearance as claimed in claim 1,2 or 3, it is characterised in that: two groups of transition frames
Away from the diameter for being less than corresponding pin hole, the master positioning pin is complete straight pin, described at the center of pin hole or two groups of cantilever crane pin holes
Auxiliary pin is notched straight pin.
5. the adjustable rocker arm of coal mining machine of underneath clearance as described in claim 1, it is characterised in that: it further include accessory plate, institute
Stating accessory plate is cross section strip structure triangular in shape, and the accessory plate front-rear direction extends, and opposite with the transition frame
Fixed, the one side of the accessory plate and the interface of the cantilever crane fit, the top surface of another side and the transition frame or
Bottom surface fits.
6. the adjustable rocker arm of coal mining machine of underneath clearance as described in claim 1, it is characterised in that: the front of the cantilever crane is set
There is motor installation cavity, the middle part in the front-back direction of the cantilever crane is equipped with crossed beam trunking, and the motor installation cavity and crossed beam trunking are in arm
Opening is set on the interface of frame, the transition frame is equipped with cable-through hole, and the cable-through hole is opened on the interface of transition frame,
The crossed beam trunking is communicated with cable-through hole.
7. the adjustable rocker arm of coal mining machine of underneath clearance as described in claim 1,2,3,4,5 or 6, it is characterised in that: described
Threaded fastener has more sets, and every suit includes studs, square nut, round nut and protective nut, is set in the transition frame
There are multiple left and right transition frame bolts hole extended and the round nut installation cavity communicated therewith, round nut installation cavity to be located at close to ear mount
One end, the cantilever crane be equipped with it is multiple left and right extend cantilever crane upper bolt holes and cantilever crane under bolt hole and with bolt on cantilever crane
The square nut installation cavity that bolt hole communicates under hole and cantilever crane, under the cantilever crane upper bolt hole, cantilever crane bolt hole with side's spiral shell
Female installation cavity communicates, spiral shell under the threaded fastener and transition frame bolt hole, round nut installation cavity, cantilever crane upper bolt hole, cantilever crane
Keyhole and square nut installation cavity correspond, and under installation condition, the studs passes through corresponding round nut installation cavity, transition
Bolt hole under frame bolt hole, square nut installation cavity and cantilever crane upper bolt hole or cantilever crane, one end and the square nut screw thread connect
It connecing, the other end is successively threadedly coupled with the round nut and protective nut from inside to outside, on left and right directions, the square nut limit
In in the square nut installation cavity, the round nut is limited in the round nut installation cavity.
8. the adjustable rocker arm of coal mining machine of underneath clearance as claimed in claim 7, it is characterised in that: the square nut is equipped with
The distance of the threaded hole of one or so extension, the central horizontal face of the short transverse of the threaded hole to the square nut is equal to two groups
The center of transition frame pin hole or two groups of cantilever crane pin holes away from half.
9. the adjustable rocker arm of coal mining machine of underneath clearance as claimed in claim 7, it is characterised in that: cantilever crane upper bolt hole and arm
Up and down, be formed as cross section is the waist-shaped hole that length direction extends up and down to bolt hole under frame.
10. a kind of adjustable coalcutter of underneath clearance, it is characterised in that: including fuselage, left rocker arm and right rocker arm, the left side is shaken
Arm and right rocker arm use the adjustable rocker arm of coal mining machine of underneath clearance described in any one of claim 1-9 claim,
The transition frame of the left rocker arm and right rocker arm is hinged on the fuselage by respective top one group of ear mount, one the first from left right side, described
The transition frame of left rocker arm and right rocker arm is hinged on left oil cylinder and right oil cylinder by next group of one the first from left right side of ear mount by respective respectively
One end, the other end of the left oil cylinder and right oil cylinder is respectively hinged with the fuselage.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910673812.5A CN110374588A (en) | 2019-07-24 | 2019-07-24 | The adjustable rocker arm of coal mining machine of underneath clearance and coalcutter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910673812.5A CN110374588A (en) | 2019-07-24 | 2019-07-24 | The adjustable rocker arm of coal mining machine of underneath clearance and coalcutter |
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