Summary of the invention
The present invention proposes a kind of microlight-type portable stand cylindrical drill machine, solves after jumbolter frame in the prior art is stayed and bores
Orifice angle can not adjust the lower problem of wide usage.
The technical scheme of the present invention is realized as follows:
A kind of microlight-type portable stand cylindrical drill machine, including the main support column for holding out against up and down, in the middle part of the main support column
It is provided with locking plate, the locking plate is provided with fixing axle along axis, and frictional disk, the frictional disk are arranged in the fixing axle
On be provided with fixed bracket, be provided with guide rail on the fixed bracket, sliding is provided with rotation host on the guide rail, described solid
Dead axle also passes through external screw thread far from described locking plate one end and is provided with locking nut, and the locking nut is connected with lock handle.
As further technical solution: contact on the locking plate with the frictional disk be disposed radially on one side it is several
Convex edge one, one section of convex edge are isosceles triangle, and adjacent two one angles of convex edge are 5 degree, the frictional disk and institute
It states locking plate contact and has been disposed radially several grooves one on one side, one cross section of groove is isosceles triangle and adjacent described
The be in angle of groove one is 5 degree.
As further technical solution: the main support column includes pedestal, and adjustment support column is provided on the pedestal,
Be cased with rotational support set on the outside of the adjustment support column, rotational support set top is connected with the portion of holding out against, it is described hold out against portion with
The rotational support set, which is fixed in the axial direction in circumferential direction, to float, and the locking plate is arranged on rotational support set,
Worm gear is coaxially arranged on the adjustment support column, the rotational support set rotated down is provided with and the worm gear
The worm screw of engagement, the worm screw both ends, which pass through bearing and are rotatably arranged on the rotational support, to be put on, the worm screw and rotation hand
Handle connection.
As further technical solution: the portion of holding out against includes the tight sleeve being set in inside the rotational support set,
The card edge for limit is provided on the tight sleeve, the card is greater than the internal diameter of rotational support set, the top along outer diameter
Fixed internal slide, which is provided with, holds out against column, and the column side that holds out against is disposed radially several through-holes for being used to be plugged and fixed pin.
As further technical solution: the tight sleeve side is circumferentially arranged several type recess, the rotation
Support sleeve upper side, which also rotates to be provided with, holds out against shaft, is provided with the top engaged with the type recess in the adjustment shaft
Tight gear, holds out against shaft and is connected with and hold out against spanner.
As further technical solution: the shaft that holds out against is connect by ratchet with gear is held out against, the rotational support
It puts on and is provided with for blocking the baffle for holding out against spanner.
As further technical solution: the main support beam bottom is additionally provided with support platform, in the support platform
It is hinged with one end of secondary support beam, the other end of the secondary support beam is hinged on the guide rail front end.
As further technical solution: the secondary support beam includes support rod, and described support rod one end is hinged on described
In support platform, the support rod other end is slidably arranged in stop sleeve, the stop sleeve away from the support platform compared with
Proximal end is provided with the first locking device, and locking sleeve is also arranged on the stop sleeve, and rotation is set in the middle part of the locking sleeve
It sets and is provided with the second locking device on the guide rail front end, the locking sleeve.
It the working principle of the invention and has the beneficial effect that
1, in the present invention, main support column provides support fixed function for drilling machine, is provided with locking plate in the middle part of main support column,
And fixing axle is provided on locking plate, screwing and unscrewing for locking nut can be realized by turning lock handle, work as locking screw
When mother screws, frictional disk can be pressed on the pressing force in fixed disk, Jin Ershi along axial provide of fixing axle by locking nut
The locking of existing frictional disk, and positioning and fixation are provided for guide rail and rotation host, when locking nut unscrews, frictional disk is pressurized
Clamp force is eliminated, and frictional disk can be freely rotated relative to locking plate along fixing axle at this time, and then realizes unlock, can adjust the sum of guide rail
The angle of host main shaft is rotated, and then makes the present invention that can not only be directed to horizontal hole and punches, can also pass through tension-lock
Tight handle, adjustment guide rail and the angle for rotating host, can be directed to the vertical hole at the top and bottom of angle and be punched, be mentioned
The high wide usage of drilling machine, solves the technical issues of capable of being suitable for the drilling machine of different holes without one kind in the prior art,
Simultaneously transport carry drilling machine when, guide rail can be turned to it is parallel with main support column, reduce occupied space, reach portable mesh
, on the other hand, the guide rail in the present invention uses square steel structure, is not used in conventional guide rails using channel steel structure, and intensity is high and again
It measures low, reduces weight, play portable effect.
2, in the present invention, when frictional disk is locked nut check, the convex edge one on locking plate can be caught in frictional disk
On groove in, improve the co-acting force of locking plate and frictional disk, convex edge one is placed equidistant on locking plate, and adjacent two
A convex edge one fixed in angle, unclamp locking nut, adjust frictional disk angle when, frictional disk separates a spacing with locking plate
From, be convex edge one can cross groove one rotation, after adjustment, convex edge one be caught in groove one realize fix, pass through convex edge one
With the setting of groove one, the precision of fixed angle can be improved, realize to guide rail and rotate host in the essence of different fixed angles
It really adjusts, when isosceles triangle can be realized frictional disk and be held out against by nut, the automatic alignment of convex edge one and groove one is compressed.
3, in the present invention, the pedestal of main support column and the portion of holding out against are held out against in the bottom surface and top surface of job site, in turn respectively
Realization main support column is held out against, rotational support set is set on pedestal, at the same rotational support set with hold out against portion can be in circumferential direction
On be freely rotated, and then circumferentially rotate guide rail in the present invention and rotation host along main support column, and then be conveniently adjusted guide rail
With the angle of rotation host, meanwhile, in conjunction with the link position relationship of locking plate and frictional disk, can be guide rail and rotation host be real
Now bore operation at any angle, substantially increases wide usage of the invention, can be turned in the worm screw of rotational support set pedestal
Fixed handle drives rotation, and then drives the rotation of worm gear, drives rotational support set to be rotated relative to ground, while not rotating
When handle, since rotational handle by worm and worm wheel and drives rotational support set relative to adjustment support column rotation, worm screw snail
Wheel has self-locking property, and worm screw is able to drive worm gear rotation, but worm gear is unable to drive worm screw rotation, when rotational handle unlocks still
Rotational support set is able to maintain at a distance from adjustment support column, is arranged scientific and reasonable.
4, in the present invention, portion is held out against when holding out against, will first hold out against column stretching, and fixed pin is inserted in and is held out against after column stretches out
In the through-hole of bottom, realize and hold out against fixing and holding out against for column and tight sleeve, wherein tight sleeve by card along and rotational support set
Realize axial fixation, tight sleeve can be freely rotated relative to rotational support set.
5, in the present invention, several type recess are provided in tight sleeve side, groove cross section is flute profile, holds out against the tooth of gear
Type is matched with the flute profile in type recess more section, is moved when holding out against spanner, is held out against spanner by holding out against shaft drive and is held out against gear
Rotation, and tight sleeve is driven to jack up upwards, realize the tightly-pressing function in the portion that holds out against, while type recess is circumferentially arranged, does not influence
Top set is relative to the rotation for holding out against gear and rotational support set.
6, in the present invention, shaft is held out against by ratchet drive and holds out against gear rotation, is not easy to operate when holding out against spanner angle
When, it can rotate in reverse direction and hold out against spanner, when the portion of holding out against is held out against, the adjustable angle for holding out against spanner simultaneously will hold out against spanner and be stuck in
On baffle, the locking function after holding out against is realized, be arranged scientific and reasonable.
7, the present invention in, secondary support beam can under horizontality guide rail and rotating platform Auxiliary support is provided, raising
The stability of the structure of guide rail and rotating platform is arranged scientific and reasonable.
8, in the present invention, support rod is slidably arranged in stop sleeve, when support rod and stop sleeve are adjusted to suitable length
, can be by the first locking device locking support bar and stop sleeve after degree, while locking sleeve is slided on stop sleeve and is set
It sets, and can be locked position of the locking sleeve on stop sleeve by the second locking device, and then can satisfy at more big angle
To the support of guide rail on degree, such as when guide rail works straight down with rotation host, support rod can be fully retracted support sleeve
Cylinder, and locking sleeve is moved at the top of stop sleeve, realize support effect.
Detailed description of the invention
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is structure of the invention front schematic view;
Fig. 2 is structure of the invention side schematic view;
Fig. 3 is worm gear structure schematic diagram of the present invention;
Fig. 4 is that the present invention holds out against portion's structural schematic diagram;
Fig. 5 is locking plate of the present invention and frictional disk structural schematic diagram;
Fig. 6 is adapter sleeve of the present invention and hooping structure schematic diagram;
Fig. 7 is one structural schematic diagram of convex edge of the present invention;
Fig. 8 is one structural schematic diagram of groove of the present invention;
Structural schematic diagram when Fig. 9 is present invention drilling downwards;
In figure: the main support column of 1-, 11- pedestal, 12- adjust support column, 13- rotational support set, and 14- holds out against portion, the top 141-
Fixed, 1411- card edge, 142- holds out against column, 143- fixed pin, 144- jack, 145- guide part, and 146- holds out against gear, the top 147-
Spanner, 148- ratchet, 149- baffle, 1410- type recess, 1412- hold out against shaft, 15- worm gear, 16- worm screw, 17- rotation
Handle, 21- locking plate, the convex edge 211- one, 212- circular groove, 213- circular through hole, 22- fixing axle, 221- groove one, 222-
Fixed convex edge, 23- frictional disk, the fixed bracket of 24-, 25- locking nut, 26- lock handle, 27- anchor ear, 28- fixing sleeve, 29-
Adapter sleeve, 291- limit edge, 3- guide rail, and 4- rotates host, 5- support platform, 51- ribs, 6- secondary support beam, 61- support
Bar, 62- stop sleeve, the first locking device of 63-, 64- locking sleeve, the second locking device of 65-, 66- sliding block, 67- third lock
Tight device, 71- axle sleeve, 72- protect tapered sleeve.
Specific embodiment
Below in conjunction with the embodiment of the present invention, technical scheme in the embodiment of the invention is clearly and completely described,
Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based in the present invention
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the scope of protection of the invention.
As shown in Figure 1,
A kind of microlight-type portable stand cylindrical drill machine is set in the middle part of main support column 1 including the main support column 1 for holding out against up and down
It is equipped with locking plate 21, locking plate 21 is provided with fixing axle 22 along axis, frictional disk 23 is arranged in fixing axle 22, on frictional disk 23
It is provided with fixed bracket 24, guide rail 3 is provided on fixed bracket 24, sliding is provided with rotation host 4, fixing axle 22 on guide rail 3
Also pass through external screw thread far from 21 one end of locking plate and be provided with locking nut 25, locking nut 25 is connected with lock handle 26.
In the present embodiment, main support column 1 provides support fixed function for drilling machine, is provided with locking in the middle part of main support column 1
Disk 21, and fixing axle 22 is provided on locking plate 21, by turn lock handle 26 can realize locking nut 25 screw and
It unscrews, when locking nut 25 screws, frictional disk 23 can be pressed on admittedly by locking nut 25 along axial provide of fixing axle 22
Pressing force on price fixing, and then realize the locking of frictional disk 23, and provide positioning and fixation for guide rail 3 and rotation host 4, work as lock
When tight nut 25 unscrews, pressing force suffered by frictional disk 23 is eliminated, and frictional disk 23 can be relative to locking plate 21 along fixing axle 22 at this time
It is freely rotated, and then realizes unlock, can adjust guide rail 3 and rotation 4 main shaft of host angle, and then make the present invention can not only
It is directed to horizontal hole to be punched, can also adjust guide rail 3 by elastic lock handle 26 and rotate the angle of host 4, it can
It is directed to the vertical hole at the top and bottom of angle to be punched, improves the wide usage of drilling machine, solve and do not have in the prior art
There is a kind of the technical issues of drilling machine that can be suitable for different holes.
Further, the another side contacted on frictional disk 23 with frictional disk 23 is provided with fixed bracket 24, and fixed bracket
24 are arranged in the side of frictional disk 23.
In the present embodiment, fixed bracket 24 is arranged by the another side contacted in frictional disk 23 with locking plate 21, can be made
Guide rail 3 and rotation host 4 are not interfered in rotation with main support column 1, and the side of frictional disk 23 is arranged in fixed bracket 24,
Keep the stress of frictional disk 23 more reasonable, drill configuration is more stable.
Further, it is contacted on locking plate 21 with frictional disk 23 and has been disposed radially several convex edges 1, convex edge one on one side
211 sections are isosceles triangle, and one 211 angle of adjacent two convex edges is 5 degree, and frictional disk 23 contacts one side with locking plate 21 along diameter
To being provided with several grooves 1, one 221 cross section of groove is by isosceles triangle and adjacent grooves 1 in angle are 5
Degree.
In the present embodiment, when frictional disk 23 is locked the locking of nut 25, the convex edge 1 on locking plate 21 can block
Enter in the groove on frictional disk 23, improve the co-acting force of locking plate 21 and frictional disk 23, convex edge 1 is placed equidistant with
On locking plate 21, and one 211 institute of two neighboring convex edge is fixed in angle, is unclamping locking nut 25, is adjusting 23 angle of frictional disk
When, frictional disk 23 separates certain distance with locking plate 21, is that convex edge 1 can cross the rotation of groove 1, adjustment finishes
Afterwards, convex edge 1 is caught in groove 1 and realizes fixation, by the setting of convex edge 1 and groove 1, can be improved fixation
The precision of angle is realized to guide rail 3 and rotates host 4 in the accurate adjusting of different fixed angles, and isosceles triangle can be realized
When frictional disk 23 is held out against by nut, the automatic alignment of convex edge 1 and groove 1 is compressed.
Further, the section of convex edge 1 is the isosceles triangle that apex angle is 150 degree, and the section of groove 1 is apex angle
For 150 degree of isosceles triangle.
In the present embodiment, the section of convex edge 1 is obtuse angle isosceles triangle, reduces the height of convex edge 1, is convenient for
It adjusts guide rail 3 and rotates the angle of host 4, while when locking nut 25 screws, it can between convex edge 1 and groove 1
Bigger pressure is generated, the stability of structure is improved
Further, main support column 1 includes pedestal 11, and adjustment support column 12 is provided on pedestal 11, is adjusted outside support column 12
Side is cased with rotational support set 13, and 13 top of rotational support set is connected with the portion of holding out against 14, holds out against portion 14 and rotational support set 13 in axis
It being fixed in circumferential direction and floats upwards, the setting of locking plate 21 covers on 13 in rotational support,
Worm gear 15 is coaxially arranged on adjustment support column 12, rotational support 13 rotated downs of set are provided with to be engaged with worm gear 15
Worm screw 16,16 both ends of worm screw pass through bearing be rotatably arranged on rotational support set 13 on, worm screw 16 connect with rotational handle 17.
In the present embodiment, the pedestal 11 of main support column 1 and holds out against portion 14 and is held out against respectively in the bottom surface and top surface of job site,
And then realize holding out against to main support column 1, rotational support set 13 is arranged on the pedestal 11, while rotational support covers 13 and holds out against portion
14 can be freely rotated in the circumferential, and then circumferentially rotate guide rail 3 and the rotation host 4 in the present embodiment along main support column 1,
And then be conveniently adjusted guide rail 3 and rotate the angle of host 4, meanwhile, in conjunction with the link position relationship of locking plate 21 and frictional disk 23,
It can be guide rail 3 and rotation host 4 realize bore operation at any angle, substantially increase wide usage of the invention, rotating
The worm screw 16 of 13 pedestal 11 of support sleeve can be rotated handle 17 and drive rotation, and then drive the rotation of worm gear 15, drive rotation
Support sleeve 13 is rotated relative to ground, at the same not rotational handle 17 when, due to rotational handle 17 pass through worm screw 16 and worm gear
15 rotate with rotational support set 13 is driven relative to adjustment support column 12, and 16 worm gear 15 of worm screw has self-locking property, 16 energy of worm screw
Enough worm gear 15 is driven to rotate, but worm gear 15 is unable to drive the rotation of worm screw 16, rotational handle 17 is still able to maintain rotation when unlocking
Support sleeve 13 is arranged scientific and reasonable at a distance from adjustment support column 12.
Further, clamping seat 26 is provided on locking plate 21, clamping seat 26 is half arc, and 26 both ends of clamping seat pass through spiral shell
Bolt is connect with 27 both ends of anchor ear, and clamping seat 26 and the main support column 1 of 27 clamping of anchor ear or rotational support cover 13.
In the present embodiment, locking plate 21 is held tightly by the clamping seat 26 and anchor ear 27 of half arc in main support column 1 or rotation
On support sleeve 13, stable structure is easy for installation, is arranged scientific and reasonable.
Further, it is additionally provided with fixing sleeve 28 on rotational support set 13,28 upper and lower ends of fixing sleeve are provided with adapter sleeve
29,29 internal diameter of adapter sleeve is identical as the outer diameter of rotational support set 13, and 29 outer diameter of adapter sleeve is in the middle part of fixing sleeve 28 to direction of both ends
It is gradually increased, by connecting on the inside of screw thread and fixing sleeve 28 on the outside of adapter sleeve 29, one end of 29 largest outside diameter of adapter sleeve is provided with
Along 291, the outer diameter limited along 291 is greater than the internal diameter of fixing sleeve 28 for limit,
In the present embodiment, when installing fixing sleeve 28, clamping seat 26 and anchor ear 27, first clamping seat 26 and anchor ear 27 can be consolidated
It is scheduled on fixing sleeve 28, then fixing sleeve 28 is set on rotational support set 13, at 28 both ends of fixing sleeve and rotational support set 13
Adapter sleeve 29 is screwed in the gap for being in respectively, due to the Diameter Gradual Change in 29 outside of adapter sleeve, in the process that adapter sleeve 29 screws in
The gap at middle 28 both ends of fixing sleeve is gradually reduced to zero, while 28 both ends of fixing sleeve being locked, and realizes installation, due to using the peace
Assembling structure is not necessarily to be mounted on anchor ear 27 and clamping seat 26 on larger-size rotational support set 13, revolves on rotational support set 13
29 convenience of tight adapter sleeve, and then great convenience is provided for installation, the simple precision of mounting structure is high and easy for installation, setting science
Rationally.
Further, 22 one end side of fixing axle is circumferentially arranged fixed convex edge 222, is provided on locking plate 21 round recessed
Slot 212, the diameter of circular groove 212 is identical as the fixed diameter of convex edge 222, and through-hole, through-hole position are additionally provided on locking plate 21
In 212 center of circular groove, the circular through hole 213 of connection circular groove 212, circular through hole are again provided on clamping seat 26
213 diameter is identical as the diameter of circular groove 212.
In the present embodiment, during installation, axis body penetrates fixing axle 22 from the side that locking plate 21 is provided with circular groove 212
And be pierced by the other side, fixed convex edge 222 is stuck on circular groove 212, locking plate 21 be provided with the one side of circular groove 212 with
Clamping seat 26 is fixedly connected, and then completes installation to fixing axle 22, tighten or unscrew locking nut 25 can realize to guide rail 3 or
Rotate the unlock of 4 angle of host.
Further, holding out against portion 14 includes the tight sleeve 141 being set in inside rotational support set 13, is arranged on tight sleeve 141
There is the card for limit along 1411, blocks the internal diameter for being greater than rotational support set 13 along 1411 outer diameters, the setting of 141 internal slide of tight sleeve
Column 142 is held out against, 142 side of column is held out against and is disposed radially several jacks 144 for being used to be plugged and fixed pin 143.
In the present embodiment, portion 14 is held out against when holding out against, and will first be held out against column 142 and be stretched out, and fixed pin 143 is inserted in and is held out against
After column 142 stretches out in the jack 144 of bottom, realizes and hold out against fixing and holding out against for column 142 and tight sleeve 141, wherein tight sleeve
141 realize axial fixation with rotational support set 13 along 1411 by card, and tight sleeve 141 can cover 13 freely relative to rotational support
Rotation.
It further obtains holding out against and is provided with guide part 145 below column 142, in 145 outer diameter of guide part and rotational support set 13
Diameter is identical.
In the present embodiment, hold out against the guide part 145 being arranged below column 142 can reduce hold out against 142 lower end of column and rotation branch
The gap of support set 13, and then reduce the shaking for holding out against 142 lower end of column, the stability for holding out against column 142 is improved, and then improve brill
The stability that machine is held out against.
Further, 141 side of tight sleeve is circumferentially arranged several type recess 1410, and rotational support covers 13 upper sides
Also rotation is provided with and holds out against shaft 1412, adjust be provided in shaft engaged with type recess 1410 hold out against gear 146, hold out against
Shaft 1412, which is connected with, holds out against spanner 147.
In the present embodiment, several type recess 1410 are provided in 141 side of tight sleeve, groove cross section is flute profile, is held out against
The flute profile of gear 146 is matched with the flute profile in the more section of type recess 1410, is moved when holding out against spanner 147, is held out against spanner 147 and pass through
It holds out against the drive of shaft 1412 and holds out against the rotation of gear 146, and tight sleeve 141 is driven to jack up upwards, realize that hold out against portion 14 holds out against function
Can, while type recess 1410 is circumferentially arranged, does not influence top set relative to turn for holding out against gear 146 and rotational support set 13
It is dynamic.
Further, it holds out against shaft 1412 to connect by ratchet 148 with gear 146 is held out against, be provided on rotational support set 13
For blocking the baffle 149 for holding out against spanner 147.
In the present embodiment, shaft 1412 is held out against by the drive of ratchet 148 and holds out against the rotation of gear 146, when holding out against 147 jiaos of spanner
When degree is not easy to operation, it can rotate in reverse direction and hold out against spanner 147, it is adjustable to hold out against spanner 147 when the portion that holds out against 14 is held out against
Angle simultaneously will hold out against spanner 147 and be stuck on baffle 149, realize the locking function after holding out against, and be arranged scientific and reasonable.
Further, main support beam bottom is additionally provided with support platform 5, and the one of secondary support beam 6 is hinged in support platform 5
End, the other end of secondary support beam 6 are hinged on 3 front end of guide rail.
In the present embodiment, secondary support beam 6 can be that the guide rail 3 and support platform 5 under horizontality provide Auxiliary support, mention
The stability of the structure of high guide rail 3 and support platform 5 is arranged scientific and reasonable.
Further, secondary support beam 6 includes support rod 61, and 61 one end of support rod is hinged in support platform 5, and support rod 61 is another
One end is slidably arranged in stop sleeve 62, and stop sleeve 62 is provided with the first locking device 63 away from 5 nearer end of support platform, branch
It is also arranged with locking sleeve 64 on support set cylinder 62,3 front end of guide rail is rotatably arranged in the middle part of locking sleeve 64, is set on locking sleeve 64
It is equipped with the second locking device 65.
In the present embodiment, support rod 61 is slidably arranged in stop sleeve 62, when support rod 61 and stop sleeve 62 are adjusted
, can be by 63 locking support bar 61 of the first locking device and stop sleeve 62 to appropriate length, while locking sleeve 64 exists
Setting is slided on stop sleeve 62, and can be locked position of the locking sleeve 64 on stop sleeve 62 by the second locking device 65
Tightly, and then it can satisfy the support in greater angle to guide rail 3, such as when guide rail 3 and rotation host 4 work straight down
When, support rod 61 can be fully retracted to stop sleeve 62, and locking sleeve 64 is moved to 62 top of stop sleeve, realize support
Effect.
Further, the setting of support platform 5 is on rotational support set 13.
In the present embodiment, 13 rotations can be covered with rotational support in support platform 5 and support rod 61, stop sleeve 62,
And then realize adjusting of the drilling machine to full angle.
Further, ribs 51 is provided in support platform 5.
In the present embodiment, ribs 51 is capable of providing the structural strength of support platform 5.
Further, for support rod 61 away from 5 proximal hinge of support platform on sliding block 66, sliding block 66 is slidably arranged in support platform
On 5,66 glide direction of sliding block is parallel with guide rail 3, and for being locked at sliding block 66 in support platform 5 is provided on sliding block 66
Three locking devices 67.
In the present embodiment, support rod 61 is hinged on sliding block 66, and sliding block 66 can slide in support platform 5, Neng Goushi
Support rod 61, supporting sleeve and locking sleeve 64 are supported the guide rail 3 under more perspective, such as when guide rail 3 and support are flat
When platform 5 is turned to straight up, position in support platform 5 can be adjusted by sliding slider 66, by the after adjustment
Position of three locking devices, 67 locking sliding block 66 in support platform 5, can realize the auxiliary branch to the guide rail 3 under the state at this time
Support.
Further, it rotates on 4 output shaft of host and is provided with axle sleeve 71, protection tapered sleeve 72, protective cone are provided on axle sleeve 71
Set 72 is taper umbrella, and the one end for protecting 72 internal diameter of tapered sleeve small is connect with axle sleeve 71, the big one end edge of protection 72 internal diameter of tapered sleeve
Its generatrix direction is provided with several water-guide rods.
In the present embodiment, the axle sleeve 71 being arranged on rotation 4 output shaft of host can be by coolant liquid mud as rotation is got rid of
Out, prevent coolant liquid mud etc. influence rear rotation host 4 work, on the other hand when guide rail 3 and rotation host 4 vertically to
When upper work, the mud to flow downward and coolant liquid can be thrown away, are arranged scientific and reasonable.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.