CN202266191U - Rear cover plate type rotary drill power unit - Google Patents
Rear cover plate type rotary drill power unit Download PDFInfo
- Publication number
- CN202266191U CN202266191U CN201120397607XU CN201120397607U CN202266191U CN 202266191 U CN202266191 U CN 202266191U CN 201120397607X U CN201120397607X U CN 201120397607XU CN 201120397607 U CN201120397607 U CN 201120397607U CN 202266191 U CN202266191 U CN 202266191U
- Authority
- CN
- China
- Prior art keywords
- main box
- installing hole
- driven gear
- gear
- box body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Abstract
The utility model discloses a rear cover plate type rotary drill power unit, which comprises a slide frame device, a hydraulic motor, a planet speed reducer, a driving gear, a driven gear, a gear box body, a driving sleeve, a buffering device and a press plate device. The gear box body comprises a rear cover plate and a main box body of an integrated structure and provided with an opening at the rear side. The top end face of the main box body is provided with a first installation hole and a third installation hole for installing the driving gear, the bottom end face of the main box body is provided with a second installation hole and a fourth installation hole, and the hole diameter of the second installation hole is larger than that of the first installation hole. The driven gear is arranged in the main box body through the opening on the rear side of the main box body, an inner ring of the driven gear is locked with a circumferential circle of the first installation hole of the main box body, the driving gear is arranged in the main box body through the third installation hole of the main box body and meshed with an outer ring of the driven gear, and the rear cover plate is locked at the position of the opening on the rear side of the main box body.
Description
Technical field
The utility model relates to the board-like rotary digging drill power head of a kind of bonnet, particularly relates to a kind of good rigidity, the board-like rotary digging drill power head of bonnet that output torque is big.
Background technology
At present; The rotary digging drill power head of prior art mainly is made up of carriage apparatus, hydraulic motor, planetary reducer, driving gear, driven gear, gear housing, actuating sleeve, buffer and platen device etc.; It is to utilize hydraulic motor to give planetary reducer with transmission of power; Pass to driven gear through driving gear again, pass to the drilling rod of rotary drilling rig at last through the actuating sleeve that is connected with driven gear.This rotary digging drill power head of prior art; Biliquid pressure motor drive-type is arranged; Single fluid motor-driven formula is also arranged, but no matter be that the biliquid pressure motor drives or the rotary digging drill power head of single fluid motor-driven, all have weak point: its output torque is difficult to improve, rigidity is relatively poor.This is because its gear housing generally is to adopt the structure that loam cake is board-like or lower cover is board-like; Promptly; Its gear housing generally cooperates upper cover plate or lower cover to form by main box; And the top or the bottom of main box are uncovered, and upper cover plate or lower cover adopt bolt to lock mutually with the uncovered border in top or bottom of main box.In order to realize firm connection; Require the sidewall of main box to have certain thickness,, and satisfy rigidity requirement so that the sidewall of main box can be offered screw; Yet; The sidewall of main box is blocked up will to cause that available space diminishes in the main box, thereby the processing dimension of driven gear is restricted, and then the output torque of whole unit head can't be improved.In addition, gear housing employing upper cover plate or lower cover are board-like, also can cause the rigidity of gear housing relatively poor, and it is firm inadequately to use.
The utility model content
The purpose of the utility model is to overcome the deficiency of prior art, provides a kind of bonnet board-like rotary digging drill power head, and it both can improve the output torque of unit head greatly, also can improve the rigidity of gear housing greatly.
The utility model solves the technical scheme that its technical problem adopted: the board-like rotary digging drill power head of a kind of bonnet comprises carriage apparatus, hydraulic motor, planetary reducer, driving gear, driven gear, gear housing, actuating sleeve, buffer and platen device; Gear housing comprises back shroud and is the main box that integral structure and rear side are provided with opening; The top end face of this main box is provided with first installing hole and the 3rd installing hole that is used to install driving gear; The bottom face of main box be provided with coaxial second installing hole of first installing hole and with corresponding the 4th installing hole of the 3rd installing hole, the aperture size of second installing hole is greater than the aperture size of first installing hole; Driven gear is inserted in the main box by the rear openings of main box, and ring locks with the border of first installing hole of main box mutually in it; Driving gear is packed into by the 3rd installing hole of main box in the main box, and is meshed with the outer shroud of driven gear; Back shroud is locked in the rear openings place of main box.
The bottom anchor ring of the outer shroud of said driven gear is provided with the first step of ring-type, and the top outer rim of the interior ring of said driven gear is provided with the second step of ring-type; The border of corresponding its first installing hole is provided with the 3rd step of ring-type on the top internal face of said main box, and the second step of the 3rd step and driven gear snap fit mutually.
The rear openings border of said main box is provided with flanging; The border of said back shroud locks with this flanging mutually.
The front side wall of said main box is provided with a suspender member, and this suspender member is provided with hangs the hole.
The quantity of said hydraulic motor, planetary reducer and driving gear is respectively two; The 3rd installing hole on the top end face of said main box is two, and the 4th installing hole on the bottom face of said main box is two.
The board-like rotary digging drill power head of a kind of bonnet of the utility model, it comprises installation steps, the main box of gear housing and the installation steps of back shroud of installation steps, gear housing and carriage apparatus of installation steps, base apparatus and buffer of installation steps, hydraulic motor and planetary reducer of installation steps, the driving gear of installation steps, the actuating sleeve of driven gear; Wherein, the installation steps of driven gear are decomposed into following steps:
Adopt a pre-designed frock; This frock comprises the frock seat and is located at frock seat top and is the frock part of vertical state; Driven gear is placed a side of frock part; And adopt some first bolts to cross the outer shroud of frock part and driven gear by the opposite side of frock part coil successively, the frock part is locked with the outer shroud of driven gear mutually; Make the frock part be vertical state together with driven gear;
Make main box be vertical state, and the rear openings of main box down; With main box move to the frock part directly over, make first installing hole of main box and the same side that driven gear is positioned at the frock part; Main box is displaced downwardly to coating frock part and driven gear, adopts a plurality of second bolts to cooperate second nut that the interior ring of driven gear is locked with the border of first installing hole of main box mutually simultaneously;
The second installing hole spiral of some first bolts between the outer shroud that is connected frock part and driven gear from main box withdrawed from; Main box is moved up together with driven gear, make the frock part shift out main box from the rear openings of main box.
One side of the work block of above-mentioned frock longitudinally is provided with a guiding rib, and main box is displaced downwardly to when coating frock part and driven gear, is to make main box be positioned at the inboard of this guiding rib.
The board-like rotary digging drill power head of a kind of bonnet of the utility model, its main box are to adopt a plurality of the 4th bolts to cooperate the 4th nut that the border of the rear openings of back shroud and main box is locked mutually with the installation steps of back shroud; The installation steps of its actuating sleeve be with actuating sleeve from second installing hole of main box is packed driven gear into, and adopt a plurality of the 3rd bolts that this actuating sleeve is locked with the outer shroud of driven gear mutually; The installation steps of its driving gear are that driving gear is inserted in the main box from top the 3rd installing hole of main box, and adopt bearing in the bottom of main box the 4th installing hole driving gear is fixed.
The beneficial effect of the utility model is: 1, because its gear housing comprises back shroud and main box; And the rear side of main box is provided with the opening of the back shroud that is used to lock; Make that the thickness of sidewall of main box can be controlled, promptly compare that the sidewall thickness size of the main box of the utility model can be littler with the main box of the gear housing of prior art; Thereby under comparable size; Available space is bigger in the main box of the utility model, thereby makes that the outside dimension of driven gear of the utility model is bigger, can obtain bigger moment of torsion; Relevant data shows that after the gear housing of the utility model adopted back shroud, under comparable size, the speed reducing ratio of driven gear can improve 30%-40%, thereby the utility model can therefrom obtain bigger output torque.2, the main box with gear housing is designed to an integral structure, and promptly the top end face of main box, bottom face and sidewall are integral structure, helps improving the rigidity as the main box of driven gear carrier.
In sum, after the utility model adopts said structure, have that output torque is big, good rigidity, and advantage such as easy for installation, quick.
Below in conjunction with accompanying drawing and embodiment the utility model is done further explain; But the board-like rotary digging drill power head of a kind of bonnet of the utility model is not limited to embodiment.
Description of drawings
Fig. 1 is the D structure sketch map of the rotary digging drill power head of the utility model;
Fig. 2 is the rear elevation (after removing carriage apparatus and back shroud) of the rotary digging drill power head of the utility model
Fig. 3 is the vertical view (after removing hydraulic motor, planetary reducer, buffer, base apparatus) of the rotary digging drill power head of the utility model;
Fig. 4 is the upward view (after removing hydraulic motor, planetary reducer, buffer, base apparatus) of the rotary digging drill power head of the utility model;
Fig. 5 is the front view of frock;
Fig. 6 is the sectional view of frock along A-A line among Fig. 5;
Fig. 7 is the vertical view of frock;
Fig. 8 is the front view after frock is installed driven gear;
Fig. 9 is that frock is installed behind the driven gear sectional view along B-B line among Fig. 8;
Figure 10 be frock be inserted in behind the main box front view;
Figure 11 is that frock is inserted in behind the main box sectional view along C-C line among Figure 10.
The specific embodiment
Embodiment; Extremely shown in Figure 4 referring to Fig. 1; The board-like rotary digging drill power head of a kind of bonnet of the utility model; It is a biliquid pressure motor drive-type, and it comprises a carriage apparatus 2, two hydraulic motors 4, two planetary reducers 5, two driving gears 6, driven gear 7, gear housing 1, actuating sleeve 9, a buffer 3 and a platen device 8.Gear housing 1 comprises back shroud 12 and is the main box 11 that integral structure and rear side are provided with opening; The top end face of this main box 11 is provided with one first installing hole 15 and two the 3rd installing holes 16 that are used to install driving gear; Accordingly; The bottom face of this main box 11 be provided with one with coaxial second installing hole 17 of first installing hole 15 and two the 4th coaxial with two the 3rd installing holes 16 respectively installing holes 18; Wherein, the aperture size of second installing hole 17 is greater than the aperture size of first installing hole 15.The outer shroud 71 of driven gear 7 is provided with many screws, and this driven gear 7 is inserted in the main box 11 by the rear openings of main box 11, and ring 72 locks with the border of first installing hole 15 of main box 11 mutually in it.Actuating sleeve 9 is inserted the driven gear 7 from second installing hole 17 of main box, and locks mutually with the outer shroud 71 of driven gear; Buffer 3 is matched with first installing hole, 15 places of main box, and is connected with the top of actuating sleeve 9; Base apparatus 8 is matched with second installing hole, 17 places of main box, and is connected with the bottom of actuating sleeve 9.Back shroud 12 is locked in the rear openings place of main box 11.Two driving gears 6 are packed in the main box 11 by two the 3rd installing holes 16 respectively, and are meshed with the outer shroud 71 of driven gear 7 respectively.Two hydraulic motors 4 are connected with two planetary reducers 5 respectively, and the output shaft of two planetary reducers 5 gets in the main box 11 from two the 3rd installing holes 16 of main box respectively, and is connected with the turning cylinder of two driving gears 6 respectively.Carriage apparatus 2 is connected with main box 11.
As shown in Figure 9, as a kind of preferred, the bottom anchor ring of the outer shroud 71 of said driven gear is provided with the first step 711 of ring-type, and the top outer rim of the interior ring 72 of said driven gear is provided with the second step 721 of ring-type; Be provided with the 3rd step 113 (shown in figure 11) of ring-type on the top internal face of said main box 11 for the border of its first installing hole, and the second step 721 of the 3rd step 113 and driven gear snap fit mutually.
Said carriage apparatus 2 comprises balladeur train body 21 and two links 22; The top of two links 22 is connected with the both sides, top of balladeur train body 21 respectively; The bottom rear side of the left side wall of said main box 11 and right side wall is connected with the both sides, bottom of balladeur train body 21 through pin respectively, and the left side wall of said main box 11 is connected through the bottom of pin with two links 22 respectively with the top of right side wall.
As a kind of preferred, the front side wall of said main box 11 is provided with a suspender member 14, and this suspender member 14 is provided with and hangs the hole.
As a kind of preferred, the rear openings border of said main box 11 is provided with flanging 13, and the border of this flanging 13 has many and is used for the screw that is connected with back shroud 12, and the border of said back shroud 12 locks with this flanging 13 mutually.Because back shroud 12 be non-main stress surface, therefore, the flanging 13 of itself and main box is locked, help reducing the gauge of the sidewall of main box 11, and further improve the interior space capable of using of main box 11.
The board-like rotary digging drill power head of a kind of bonnet of the utility model, its mounting method comprise the installation steps of main box 11 and back shroud 12 of installation steps, gear housing of installation steps, gear housing 1 and carriage apparatus 2 of installation steps, base apparatus 8 and buffer 3 of installation steps, two hydraulic motors 4 and two planetary reducers 5 of installation steps, two driving gears 6 of installation steps, the actuating sleeve 9 of driven gear 7.Wherein, the installation steps of the installation steps of two hydraulic motors 4 and two planetary reducers 5, base apparatus 8 and buffer 3, gear housing 1 are the conventional steps that prior art adopts with the installation steps of carriage apparatus 2.The installation steps of driven gear 7 and actuating sleeve 9 are decomposed into following several steps:
One, like Fig. 8, shown in Figure 9; Fixedly driven gear 7: adopt a pre-designed frock 10, and the structure of this frock 10 such as Fig. 5-shown in Figure 7, it comprises frock seat 101 and is located at frock seat top and is the frock part 102 of vertical state; The top of this frock part 102 is structure in the form of a ring; And be provided with three screws, simultaneously, the end of these frock part 102 1 sides also is provided with the 4th step 1021 that also can match with the first step of driven gear in the form of a ring along the border; Be connected with three reinforcing ribs 103 between the bottom of this frock part 102 and the frock seat 101; Top one side of frock seat 101 longitudinally is provided with a guiding rib 104.Adopt three first bolts 1022 that frock part 102 is locked with the outer shroud 71 of driven gear mutually, and make this frock part 102 be vertical state.Here; After can earlier frock part 102 being set level (make be provided with one of the 4th step 1021 in the frock part 102 face up); Again with driven gear 7 as on the frock part 102; And make be provided with in the driven gear 7 that one of first step 711 faces down and with the 4th step 1021 clamping mutually of frock part; And then cross three corresponding screws in three screws and the driven gear 7 of frock part 102 by frock part 102 one side down coil successively with three first bolts 1022, utilize crane or driving that frock part 102 is hung into vertical state at last, and its frock seat 101 is locked on the platform.Perhaps; Also can earlier frock seat 101 be locked on the platform; Utilize crane or driving that driven gear 7 is winched near frock part 102, utilize special clamp clamps driven gear 7 and frock part 102 again after, adopt three first bolts 1022 that frock part 102 is locked with driven gear 7 mutually.
Two,, connect main box 11: utilize crane or driving to hang the suspender member 14 of main box, make main box 11 be vertical state, and the rear openings of main box 11 down like Figure 10, shown in Figure 11; With main box 11 move to frock part 102 directly over, first installing hole 15 that makes main box and driven gear 7 are positioned at the same side of frock part 102; Main box 11 is displaced downwardly to coating frock part 102 and driven gear 7; And make main box 11 be positioned at the inboard of the guiding rib 104 of frock seat 101; So that main box 11 move down put in place after; Main box 11 just cooperates with driven gear 7 and puts in place: the screw of the screw of first installing hole, 15 borders of main box and interior ring 72 borders of driven gear is corresponding, and the second step 721 on the 3rd step 113 of main box and the interior ring of driven gear clamping mutually puts in place.Adopt a plurality of second bolts 112 to cooperate second nut 111 that the interior ring 72 of driven gear is locked with the border of first installing hole 15 of main box mutually; Second installing hole 17 spirals of three first bolts 1022 between the outer shroud that is connected frock part 102 and driven gear 71 from main box are withdrawed from; Utilize crane or driving that main box 11 is sling again, make frock part 102 shift out main box 11 from the rear openings of main box.This has promptly accomplished the installation process of driven gear 7.
The board-like rotary digging drill power head of a kind of bonnet of the utility model, its main box 11 are to adopt a plurality of the 4th bolts 121 to cooperate the 4th nut 122 that the flanging 13 of back shroud 12 with the main box rear openings locked mutually with the installation steps of back shroud 12.Its main box 11 carries out after driven gear 7 and actuating sleeve 9 install with the installation steps of back shroud 12, and it can carry out before or after any step of the installation steps of installation steps, base apparatus 8 and the buffer 3 of installation steps, two hydraulic motors 4 and two planetary reducers 5 of the installation steps of actuating sleeve 9, two driving gears 6, gear housing 1 and the installation steps of carriage apparatus 2.
The board-like rotary digging drill power head of a kind of bonnet of the utility model; The installation steps of its actuating sleeve 9 are: from second installing hole 17 of main box 11 is packed driven gear 7 into, and adopt a plurality of the 3rd bolts 91 that actuating sleeve 9 is locked with the outer shroud 71 of driven gear mutually actuating sleeve 9.The installation steps of its two driving gears 6 are: earlier two driving gears 6 are packed in the main box 11 by two the 3rd installing holes 16 of main box top end face respectively, two the 4th installing hole 18 places respectively at the main box bottom face adopt two bearings respectively the bottom of two driving gears 6 to be fixed again.
The board-like rotary digging drill power head of a kind of bonnet of the utility model is after its gear housing 1 adopts said structure, under comparable size; It is compared with the gear housing of prior art, and the size of the sidewall of the main box 1 of the utility model can be littler, thereby the space capable of using in the main box is bigger; This promptly, the size of the driven gear 7 of the utility model can do more, and the size of driven gear 7 is big more; Its speed reducing ratio is just big more, and speed reducing ratio is big more, and the output torque of driven gear 7 is just big more.Through experiment test, after the gear housing 1 of the utility model adopted said structure, the speed reducing ratio of its driven gear 7 can improve 30%-40%, and therefore, the utility model is compared with the unit head of prior art, can obtain bigger output torque.In addition, after the gear housing 1 of the utility model adopts said structure, also help the rigidity that improves gear housing 1, this is that down, more firm naturally, rigidity is better in working order because the main box of the utility model 11 is integral structure.
The board-like rotary digging drill power head of a kind of bonnet of the utility model, its mounting process is novel, and compares with the mounting process of the rotary digging drill power head of prior art, and is convenient, quick.
The board-like rotary digging drill power head of a kind of bonnet of the utility model, it also can be single fluid motor-driven formula, that is, the quantity of its hydraulic motor, planetary reducer and driving gear is respectively one.At this moment, the installation steps of the structure of its gear housing, driven gear and actuating sleeve and driving gear as stated.
The foregoing description only is used for further specifying the board-like rotary digging drill power head of a kind of bonnet of the utility model; But the utility model is not limited to embodiment; Every technical spirit according to the utility model all falls in the protection domain of the utility model technical scheme any simple modification, equivalent variations and modification that above embodiment did.
Claims (5)
1. the board-like rotary digging drill power head of bonnet comprises carriage apparatus, hydraulic motor, planetary reducer, driving gear, driven gear, gear housing, actuating sleeve, buffer and platen device; It is characterized in that: gear housing comprises back shroud and is the main box that integral structure and rear side are provided with opening; The top end face of this main box is provided with first installing hole and the 3rd installing hole that is used to install driving gear; The bottom face of main box be provided with coaxial second installing hole of first installing hole and with corresponding the 4th installing hole of the 3rd installing hole, the aperture size of second installing hole is greater than the aperture size of first installing hole; Driven gear is inserted in the main box by the rear openings of main box, and ring locks with the border of first installing hole of main box mutually in it; Driving gear is packed into by the 3rd installing hole of main box in the main box, and is meshed with the outer shroud of driven gear; Back shroud is locked in the rear openings place of main box.
2. the board-like rotary digging drill power head of bonnet according to claim 1, it is characterized in that: the bottom anchor ring of the outer shroud of said driven gear is provided with the first step of ring-type, and the top outer rim of the interior ring of said driven gear is provided with the second step of ring-type; The border of corresponding its first installing hole is provided with the 3rd step of ring-type on the top internal face of said main box, and the second step of the 3rd step and driven gear snap fit mutually.
3. the board-like rotary digging drill power head of bonnet according to claim 1 is characterized in that: the rear openings border of said main box is provided with flanging; The border of said back shroud locks with this flanging mutually.
4. the board-like rotary digging drill power head of bonnet according to claim 1, it is characterized in that: the front side wall of said main box is provided with a suspender member, and this suspender member is provided with hangs the hole.
5. the board-like rotary digging drill power head of bonnet according to claim 1 is characterized in that: the quantity of said hydraulic motor, planetary reducer and driving gear is respectively two; The 3rd installing hole on the top end face of said main box is two, and the 4th installing hole on the bottom face of said main box is two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120397607XU CN202266191U (en) | 2011-10-18 | 2011-10-18 | Rear cover plate type rotary drill power unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120397607XU CN202266191U (en) | 2011-10-18 | 2011-10-18 | Rear cover plate type rotary drill power unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202266191U true CN202266191U (en) | 2012-06-06 |
Family
ID=46156989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120397607XU Expired - Lifetime CN202266191U (en) | 2011-10-18 | 2011-10-18 | Rear cover plate type rotary drill power unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202266191U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102409969A (en) * | 2011-10-18 | 2012-04-11 | 林龙海 | Power head of rear cover-plate type rotary drilling rig and installation method thereof |
| CN102877785A (en) * | 2012-09-29 | 2013-01-16 | 上海中联重科桩工机械有限公司 | Power head and rotary drilling rig |
-
2011
- 2011-10-18 CN CN201120397607XU patent/CN202266191U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102409969A (en) * | 2011-10-18 | 2012-04-11 | 林龙海 | Power head of rear cover-plate type rotary drilling rig and installation method thereof |
| CN102877785A (en) * | 2012-09-29 | 2013-01-16 | 上海中联重科桩工机械有限公司 | Power head and rotary drilling rig |
| CN102877785B (en) * | 2012-09-29 | 2014-08-06 | 上海中联重科桩工机械有限公司 | Power head and rotary drilling rig |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102409969B (en) | Power head of rear cover-plate type rotary drilling rig and installation method thereof | |
| CN203023768U (en) | Automatic oil injection machine of wheel hub inner cavity | |
| CN206474760U (en) | A kind of Multiaxial tapping machine | |
| CN202266191U (en) | Rear cover plate type rotary drill power unit | |
| CN103357914B (en) | The multi spindle drilling head lathe of crankcase side thread Pilot hole processing and processing method thereof | |
| CN203483124U (en) | Pump chair | |
| CN103382809B (en) | A kind of vehicle mounted electric hydraulic vibration-type trepan | |
| CN203585256U (en) | Planetary differential speed reducer for crane | |
| CN203835285U (en) | Skid-type inclined shaft drilling rig | |
| CN109732360B (en) | Copper pipe hole drawing mechanism | |
| CN203835259U (en) | Vehicle-mounted inclined well drilling machine | |
| CN213288778U (en) | Tapping machine for marine pipeline installation | |
| CN206702251U (en) | A kind of rig of gear used for diesel engine | |
| CN201220288Y (en) | Drilling tool | |
| CN203161118U (en) | Small motor automatic driller for integrated winch of petroleum drilling machine | |
| CN211028154U (en) | Perforating machine for seamless steel pipes | |
| CN103835652A (en) | Vehicle-mounted inclined shaft drilling machine | |
| CN203716839U (en) | Variable speed power head of double-planetary speed reducer for drilling machine | |
| CN208670017U (en) | Self-lubricating gear case | |
| CN208295045U (en) | A kind of petroleum drilling machine winch shift-variable formula planetary gear reduction box | |
| CN207433507U (en) | A kind of vehicle parking drag-line positioner | |
| CN202194997U (en) | Speed reducer for wood working machine | |
| CN201329433Y (en) | Special groove diversion machining tool used in tobacco machinery | |
| CN201693354U (en) | Bench type bent-arm drilling and tapping machine tool | |
| CN215797908U (en) | Suspension mechanism of three-cylinder engine hybrid |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120606 Effective date of abandoning: 20131120 |
|
| RGAV | Abandon patent right to avoid regrant |