CN206555630U - A kind of floating driving mechanism for derusting by sandblasting equipment - Google Patents
A kind of floating driving mechanism for derusting by sandblasting equipment Download PDFInfo
- Publication number
- CN206555630U CN206555630U CN201720110379.0U CN201720110379U CN206555630U CN 206555630 U CN206555630 U CN 206555630U CN 201720110379 U CN201720110379 U CN 201720110379U CN 206555630 U CN206555630 U CN 206555630U
- Authority
- CN
- China
- Prior art keywords
- drive link
- support bar
- driving mechanism
- block
- floating driving
- 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.)
- Active
Links
Landscapes
- Transmission Devices (AREA)
Abstract
The utility model discloses a kind of floating driving mechanism for derusting by sandblasting equipment, belong to pipeline derusting field.The drive mechanism includes：It is arranged on the support bar between two relative movable racks, relative drive link parallel with support bar, the transmission case being rotatably mounted around on support bar and drive link, is arranged on the regulating bolt to drive the motor of drive rod rotation, the block being arranged on movable rack, be connected with the screw top of block in transmission case.In particular, the drive mechanism also includes：Two swinging blocks that two ends are rotatably connected with the end of support bar and drive link respectively；It is connected with swinging block, and horizontally extends into the shell fragment that the gear intracavitary portion of block and regulating bolt offset；It is fixedly set in two driving wheels at drive link two ends.The drive mechanism can ensure that the shell fragment positioned at drive link both sides reaches that identical compresses degree, it is ensured that driving wheel obtains enough frictional force with pipe surface.
Description
Technical field
The utility model is related to pipeline derusting field, more particularly to a kind of floating type driving machine for derusting by sandblasting equipment
Structure.
Background technology
In oil and gas pipeline field joints coating technology, in order to obtain good repaired mouth quality, generally removed using automatic sand blasting
Equipment of becoming rusty carries out processing of rust removing to pipe surface.The automatic sand blasting equipment sprays at a high speed abrasive material using compressed air as power
Pending pipe surface is mapped to, is removed the rusty stain of pipe surface using abrasive material hardness in itself and impact flexibility, and then obtain
The pipe surface of requirement must be met.Automatic sand blasting equipment is common for this area.For example, pipeline conventional at present
Four driving running gears, Destaticizing device, horizontal walking device and position-limit mechanism etc. are generally comprised with automatic sand blasting equipment,
Wherein, four driving running gears are that a multi-clove type changes adapter ring shape opening-closing structure, are changed and connect by the two panels multi-clove type connected with rotary shaft
The annular grillage (alternatively referred to as movable rack) of folding is constituted, and between relative annular grillage, is provided with laterally walking dress
Put and floating driving mechanism, gunjet rack is arranged on horizontal walking device.Using when, the pipe for treating repaired mouth is blocked using movable rack
Road, makes gunjet rack be laterally moved on horizontal walking device and carries out derusting by sandblasting processing to the outer wall of pipeline, treat
After the derusting operation for completing the part, the derusting by sandblasting equipment is set to rotate certain angle around pipeline using floating driving mechanism
Degree, derusting operation is carried out to the tube wall of pipeline other part.It can be seen that, in order to ensure automatic sand blasting equipment on pipeline smoothly
Ground circumferential movement, it is necessary to which a kind of floating driving mechanism is provided.
Prior art (CN103016905A) provides such a floating driving mechanism, including：It is arranged on relative
Support bar, relative drive link parallel with support bar between two movable racks, it is rotatably mounted around support bar and drive link
On transmission case, the motor that is arranged in transmission case, for driving drive link to be rotated, being rotatably arranged in drive link two
The swinging mounting seat at end, the driving wheel being connected with swinging mounting seat, the shell fragment being connected with swinging mounting, it is arranged on movable rack
Block, wherein shell fragment extend into the gear intracavitary of block, and is arranged on screw thread the bolt at the top of block and offsets.Using when, lead to
The depth for overregulating the gear intracavitary portion that bolt extend into block is spacing to adjust the position of shell fragment and it is carried out, in the pressure of shell fragment
The connection of swinging mounting seat and driving wheel are pushed under power effect, driving wheel is contacted with pipe surface, motor is then turned on and drives drive
Wheel rotation, you can realize rotation of the floating driving mechanism in pipe surface.
Designer has found that prior art at least has problems with：
Prior art makes driving wheel be separately positioned on drive link two ends, and a driving wheel and pipeline table are being adjusted using shell fragment
After the thrust in face, it is difficult to ensure that the shell fragment corresponding to another driving wheel, which can also adjust identical, compresses degree, and then
Cause driving wheel hypodynamic " skidding " phenomenon of friction occur with pipe surface, influence the normal work of derusting by sandblasting equipment.
Utility model content
The utility model embodiment technical problem to be solved is to can ensure that positioned at drive link both sides there is provided one kind
Shell fragment reach that identical compresses degree, so as to ensure that driving wheel and pipe surface obtain the floating type driving machine of enough frictional force
Structure.Concrete technical scheme is as follows：
A kind of floating driving mechanism for derusting by sandblasting equipment, including：It is arranged between two relative movable racks
Support bar, relative drive link parallel with the support bar, be rotatably mounted around on the support bar and the drive link
Transmission case, be arranged on the gear to drive the motor of the drive rod rotation, be arranged on the movable rack on the transmission case
Block, the regulating bolt being connected with the screw top of the block, the floating driving mechanism also include：Two ends respectively with it is described
Two swinging blocks that the end of support bar and the drive link is rotatably connected；
It is connected with the swinging block, and horizontally extends into the gear intracavitary portion of the block and the regulating bolt offsets
Shell fragment；
It is fixedly set in two driving wheels at the drive link two ends.
Specifically, preferably, the Surface coating of the driving wheel has rubber layer.
Specifically, preferably, being provided with rill structure in the rubber layer.
Specifically, preferably, the two ends of the transmission case are rotatably mounted around the support bar and the drive link
Middle part.
Specifically, preferably, the swinging block includes linkage section and is symmetricly set on two of the linkage section two ends
Wheel hub section；
Be respectively arranged with a bearing in two wheel hubs sections, two bearings be set in the support bar with
The end of the drive link.
Specifically, preferably, being provided with a flat groove on the side wall of the linkage section, using the first fixing bolt by institute
The one end for stating shell fragment is fixed in the flat groove.
Specifically, preferably, the block includes vertical side plate and hung down with the top and bottom of the vertical side plate
The direct-connected horizontal top connect and horizonal base plate, to cooperatively form the gear chamber of square structure；
The vertical side plate is fixed on the movable rack, the shell fragment is extend into the gear intracavitary portion.
Specifically, preferably, the vertical side plate is fixed on the movable rack by using the second fixing bolt.
Specifically, preferably, being provided with multiple regulating bolts in symmetric geometry in the horizontal top.
Specifically, preferably, the transmission case includes miner diameter end, changeover portion and the bigger diameter end being sequentially connected with；
The through hole for penetrating rotatably the support bar is provided with the miner diameter end；
The through hole for penetrating rotatably the drive link is provided with the bigger diameter end.
The beneficial effect brought of technical scheme that the utility model embodiment is provided is：
The utility model embodiment is by the way that swinging block is rotatably connected with support bar and drive link simultaneously, it can be ensured that two
The regulating degree of individual regulating bolt is consistent, and then ensures that two shell fragments reach that identical compresses degree, it is ensured that driving wheel and pipe
Road surface obtains good frictional force.Also, because swinging block is rotatably connected with support bar and drive link simultaneously, in shell fragment
Under pretightning force effect, even if pipe surface has rough phenomenon, also ensure that driving wheel offsets with pipe surface all the time,
The skidding of driving wheel is prevented effectively from, derusting by sandblasting equipment is stably walked in pipe surface.
Brief description of the drawings
, below will be to needed for embodiment description in order to illustrate more clearly of the technical scheme in the utility model embodiment
The accompanying drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some realities of the present utility model
Example is applied, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is the structural representation for the floating driving mechanism that the utility model embodiment is provided；
Fig. 2 is the local knot for the derusting by sandblasting equipment for being provided with floating driving mechanism that the utility model embodiment is provided
Structure schematic diagram.
Reference is represented respectively：
1 support bar,
2 drive links,
3 transmission cases,
4 motors,
5 blocks,
6 regulating bolts,
7 swinging blocks,
8 shell fragments,
9 driving wheels,
10 movable racks.
Embodiment
Unless otherwise defined, all technical terms used in the utility model embodiment are respectively provided with and those skilled in the art
The identical implication being generally understood that.To make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with attached
Figure is described in further detail to the utility model embodiment.
The utility model embodiment provides a kind of floating driving mechanism, as shown in Figure 1, the floating driving mechanism
Including：Be arranged on support bar 1 between two relative movable racks 10, it is relative drive link 2 parallel with support bar 1, rotatable
Transmission case 3 that ground is sleeved on support bar 1 and drive link 2, be arranged in transmission case 3 with drive motor 4 that drive link 2 rotates,
The block 5 being arranged on movable rack 10, the regulating bolt 6 being connected with the screw top of block 5.Further, the floating type drive
Motivation structure also includes：Two swinging blocks 7 that two ends are rotatably connected with the end of support bar 1 and drive link 2 respectively；With swinging block
7 connections, and horizontally extend into the shell fragment 8 that the gear intracavitary portion of block 5 and regulating bolt 6 offset；It is fixedly set in 2 liang of drive link
Two driving wheels 9 at end.
It should be noted that derusting by sandblasting equipment typically has four movable racks 10, wherein, two face face phases of movable rack 10
To constituting one group, two groups of movable racks 10 are symmetricly set on locating rack two ends, and are rotatably connected to realize that two are opened with locating rack
Opening and closing for frame 10 is closed, to block the pipeline for treating repaired mouth.The utility model implementation is provided with each group of movable rack 10
The floating driving mechanism that example is provided, the operation principle with regard to the floating driving mechanism, which is given, below describes：
When the pipeline that repaired mouth is treated using derusting by sandblasting equipment carries out derusting by sandblasting, movable rack 10 is stuck on pipeline,
The driving wheel 9 in the drive mechanism is set to be contacted with pipe surface.In order that obtaining larger rub between driving wheel 9 and pipe surface
Wipe power, regulating bolt 6 is screwed to adjust the depth in its gear intracavitary portion for extending into block 5, thus by shell fragment 8 push it is specific away from
From making shell fragment 8 adjust to suitable compression degree.During shell fragment 8 is pushed, the two ends of swinging block 7 will be respectively around branch
Strut 1 and drive link 2 are rotated, until the driving wheel 9 being fixedly set on drive link 2 is moved downwardly to and pipe surface tightly phase
Support.Now, under the pretightning force effect that shell fragment 8 is provided, driving wheel 9 will remain the relation closely offseted with pipe surface,
It ensure that and enough frictional force is obtained between driving wheel 9 and pipe surface.
Two driving wheels 9 are arranged on the two ends of drive link 2 respectively close to a swinging block 7, are utilizing the one end of drive link 2
Shell fragment 8 adjust the position at driving wheel 9 and pipe surface between thrust after, due to swinging block 7 simultaneously with support bar 1 and
Drive link 2 is rotatably connected, i.e. support bar 1 and the synchronous axial system of drive link 2, and the shell fragment 8 for being so located at the other end of drive link 2 also will
Specific range is pushed therewith, now regulating bolt 6 corresponding with the shell fragment 8 is screwed to shell fragment 8 and offseted, you can is made to be located at and is passed
The driving wheel 9 of the other end of lever 2 tightly offsets with pipe surface.It can be seen that, the utility model embodiment by by swinging block 7 simultaneously
It is rotatably connected with support bar 1 and drive link 2, it can be ensured that the regulating degree of two regulating bolts 6 is consistent, and then ensures two
Shell fragment 8 reaches that identical compresses degree, it is ensured that driving wheel 9 obtains good frictional force with pipe surface.Also, due to swinging
Block 7 is rotatably connected with support bar 1 and drive link 2 simultaneously, shell fragment 8 pretightning force effect under, even if pipe surface exist it is recessed
Convex uneven phenomenon, also ensures that driving wheel 9 offsets with pipe surface all the time, is prevented effectively from the skidding of driving wheel 9, makes spray
Sand rust removalling equipment is stably walked in pipe surface.
Support bar 1, drive link 2 are both preferably steel cylinder, to improve both intensity, in order that both easily occur
Rotate, transmission case 3, swinging block 7 and driving wheel 9 use lightweight metal material, such as aluminium.Preferably, in driving wheel 9
One layer of rubber layer of Surface coating, the elasticity for being so based not only on rubber layer improves its frictional force between pipe surface, and
When there is rough situation in face of pipe surface, driving wheel 9 still has larger contact area with pipe surface
And grasp, effectively prevent the skidding of driving wheel 9.Further, rill structure is provided with rubber layer, the ditch is utilized
Line structure improves the wheel surface roughness of driving wheel 9, more conducively improves its frictional force between pipe surface.The rill structure can
It is similar with the lines on such as automobile wheel face, as long as it does not influence the normal walking of driving wheel 9, and it can guarantee that raising frictional force i.e.
Can.
The utility model embodiment drives drive link 2 to rotate by setting motor 4 on transmission case 3, in order to ensure passing
The driving wheel 9 at the two ends of lever 2 is synchronously rotated, and the two ends of transmission case 3 are rotatably mounted around into support bar 1 and drive link 2
Middle part, it is so equal apart from the distance of motor 4 respectively close to two driving wheels 9 that two swinging blocks 7 are set, it is more conducive to both
Synchronous axial system.
In the utility model embodiment, floatability is assigned for the drive mechanism by setting swinging block 7, to ensure to drive
Driving wheel 9 tightly offsets with pipe surface all the time.As a kind of embodiment, swinging block 7 includes linkage section and the company of being symmetricly set on
Connect in two wheel hubs section at section two ends, two wheel hub sections and be respectively arranged with a bearing, two bearings are set in support bar 1
With the end of drive link 2.It will be appreciated by persons skilled in the art that above-mentioned bearing is the common rolling bearing in this area, its
Outer ring is fixed in wheel hub section, and its inner ring is sleeved on the end of support bar 1 or drive link 2, so that swinging block 7 is around support bar
1 and drive link 2 rotate.
On the basis of swinging block 7 is arranged to said structure, for the ease of the installation and dismounting of shell fragment 8, in linkage section
A flat groove is provided with the wall of side, one end of shell fragment 8 is fixed in flat groove using the first fixing bolt.Specifically, in flat groove
Roof and one end of shell fragment 8 multiple internal thread holes connected are set, the first fixing bolt and these internal thread hole screw threads are connected
Connect, you can shell fragment 8 is fixed in flat groove.
The utility model embodiment pushes space by using block 5 to provide to reconcile in elasticity for shell fragment 8, specifically,
Block 5 include vertical side plate and top and bottom horizontal top connected vertically and horizonal base plate with vertical side plate, with
Close the gear chamber for forming square structure；Vertical side plate is fixed on movable rack 10, and shell fragment is extend into gear intracavitary portion.By that will keep off
Block 5 is arranged to structure as described above, to form opening towards the gear chamber of shell fragment 8, so that shell fragment 8 extend into gear intracavitary portion, and
Compression regulation is carried out to it using the regulating bolt 6 being arranged in horizontal top.It is understood that the height of gear chamber is
The regulation height of shell fragment 8, is designed according to the actual requirements.
In order to ensure installation and dismounting of the block 5 on movable rack 10, by using the second fixing bolt by vertical side plate
It is fixed on movable rack 10.Specifically, vertical side plate with multiple internal thread holes connected are set on the plate body of movable rack 10, make
Second fixing bolt passes through and is fixed on the installation that block 5 can be achieved in internal thread hole.
In order that the uniform force of shell fragment 8, is stably compressed with being conditioned bolt 6, it is in symmetrical geometry knot in horizontal top
It is provided with multiple regulating bolts 6, for example, four regulating bolts 6 can be constituted symmetrical quadrangle and be arranged on water structure
On ceiling, or three regulating bolts are constituted into equilateral triangles be arranged in horizontal top.Wherein, shell fragment 8 selects ability
The common stainless steel spring piece in domain, thickness is preferably in 2-4mm, the preferred rectangle of shape, so by lowering regulating bolt 6
Compression shell fragment 8 is easily achieved, while ensuring that shell fragment 8 has certain pretightning force.
In the utility model embodiment, using the loading motor 4 of transmission case 3, while can also with support bar 1 and drive link 2
Connection is rotated, in order to realize above-mentioned annexation, while ensuring the small volume of transmission case 3, the transmission case 3 includes being sequentially connected with
Miner diameter end, changeover portion and bigger diameter end, be provided with miner diameter end on the through hole for penetrating rotatably support bar 1, bigger diameter end
It is provided with the through hole for penetrating rotatably drive link 2.Because the rotor of motor 4 is set in driving gear, and drive link 2
Middle part be set with driven gear, driving gear and driven gear are meshed in the changeover portion and bigger diameter end of transmission case 3, so
Then drive driving gear to rotate when motor 4 is rotated, and then drive driven gear to drive drive link 2 to rotate.By by transmission case
Correspondence support bar 1 end be arranged to miner diameter end with using support bar 1 provide support, by set bigger diameter end and changeover portion so as to
In rotor, driving gear and driven gear for accommodating above-mentioned motor 4 etc..The through hole set on above-mentioned bigger diameter end and miner diameter end it is big
It is small with lucky support bar 1 and drive link 2 to be enable to rotate and be advisable.Further, for the ease of the installation of motor 4, the transmission
The overall structure of case 3 is made up of the casing and lid being detachably connected.
Preferred embodiment of the present utility model is the foregoing is only, not to limit protection domain of the present utility model,
It is all it is of the present utility model spirit and principle within, any modification, equivalent substitution and improvements made etc. should be included in this reality
Within new protection domain.
Claims (10)
1. a kind of floating driving mechanism for derusting by sandblasting equipment, including：Be arranged on two relative movable racks (10) it
Between support bar (1), relative drive link (2) parallel with the support bar (1), be rotatably mounted around the support bar (1)
With the transmission case (3) on the drive link (2), be arranged on the transmission case (3) with drive the drive link (2) rotate electricity
Machine (4), the block (5) being arranged on the movable rack (10), the regulating bolt being connected with the screw top of the block (5)
(6), it is characterised in that the floating driving mechanism also includes：Two ends respectively with the support bar (1) and the drive link
(2) two swinging blocks (7) that end is rotatably connected；
It is connected with the swinging block (7), and horizontally extends into gear intracavitary portion and the regulating bolt (6) of the block (5)
The shell fragment (8) offseted；
It is fixedly set in two driving wheels (9) at the drive link (2) two ends.
2. floating driving mechanism according to claim 1, it is characterised in that the Surface coating of the driving wheel (9) has
Rubber layer.
3. floating driving mechanism according to claim 2, it is characterised in that rill knot is provided with the rubber layer
Structure.
4. floating driving mechanism according to claim 1, it is characterised in that the two ends of the transmission case (3) are rotatable
Ground is sleeved on the middle part of the support bar (1) and the drive link (2).
5. floating driving mechanism according to claim 1, it is characterised in that the swinging block (7) include linkage section and
It is symmetricly set on two wheel hubs section at the linkage section two ends；
Be respectively arranged with a bearing in two wheel hubs sections, two bearings be set in the support bar (1) and
The end of the drive link (2).
6. floating driving mechanism according to claim 5, it is characterised in that be provided with one on the side wall of the linkage section
One end of the shell fragment (8), is fixed in the flat groove by individual flat groove using the first fixing bolt.
7. floating driving mechanism according to claim 6, it is characterised in that the block (5) include vertical side plate with
And top and bottom horizontal top connected vertically and horizonal base plate with the vertical side plate, to cooperatively form square structure
The gear chamber；
The vertical side plate is fixed on the movable rack (10), the shell fragment (8) is extend into the gear intracavitary portion.
8. floating driving mechanism according to claim 7, it is characterised in that will be described by using the second fixing bolt
Vertical side plate is fixed on the movable rack (10).
9. floating driving mechanism according to claim 7, it is characterised in that be in symmetrical geometry knot in the horizontal top
It is provided with multiple regulating bolts (6) structure.
10. floating driving mechanism according to claim 1, it is characterised in that the transmission case (3) includes being sequentially connected with
Miner diameter end, changeover portion and bigger diameter end；
The through hole for penetrating rotatably the support bar (1) is provided with the miner diameter end；
The through hole for penetrating rotatably the drive link (2) is provided with the bigger diameter end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720110379.0U CN206555630U (en) | 2017-02-06 | 2017-02-06 | A kind of floating driving mechanism for derusting by sandblasting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720110379.0U CN206555630U (en) | 2017-02-06 | 2017-02-06 | A kind of floating driving mechanism for derusting by sandblasting equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206555630U true CN206555630U (en) | 2017-10-13 |
Family
ID=60010070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720110379.0U Active CN206555630U (en) | 2017-02-06 | 2017-02-06 | A kind of floating driving mechanism for derusting by sandblasting equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206555630U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109237204A (en) * | 2018-10-25 | 2019-01-18 | 南通理工学院 | A kind of detection of pipeline outer wall coating and auto-mending robot |
-
2017
- 2017-02-06 CN CN201720110379.0U patent/CN206555630U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109237204A (en) * | 2018-10-25 | 2019-01-18 | 南通理工学院 | A kind of detection of pipeline outer wall coating and auto-mending robot |
| CN109237204B (en) * | 2018-10-25 | 2023-10-20 | 南通理工学院 | Robot for detecting and automatically repairing coating on outer wall of pipeline |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206662890U (en) | A kind of steel pipe fitting polishing device for inner wall of synchronized dust removal | |
| CN107617522B (en) | A kind of pipeline corrosion protection processing unit | |
| CN106239330B (en) | A kind of energy deimpurity petroleum pipeline inner wall rust removalling equipment of automatic scraping | |
| CN207952144U (en) | A kind of device of cleaning line clogging object | |
| CN107905508A (en) | A kind of finishing paint spraying equipment | |
| CN107386184A (en) | A kind of construction site environmental protection dust control equipment | |
| CN104815822B (en) | The automatic remover of portable pipe external anti-corrosion layer | |
| CN104162823B (en) | Spheroidal graphite cast-iron tube faucet sanding apparatus | |
| CN110883657B (en) | Polishing device for nodular cast iron jacking pipe and using method thereof | |
| CN206555630U (en) | A kind of floating driving mechanism for derusting by sandblasting equipment | |
| CN201253807Y (en) | Anchor chain sand blasting apparatus | |
| CN106239331B (en) | A kind of oil-piping inner wall intelligence drying rust-cleaning integrating machine | |
| CN107263333B (en) | A kind of wind power generation stepped drum outer wall clears up shot-blasting machine automatically | |
| CN105672911B (en) | The automatic board migration device of environment-friendly type tubing string | |
| CN205518341U (en) | Spray coating device | |
| CN207344399U (en) | A kind of penstock derusting by sandblasting support device | |
| CN207494559U (en) | A kind of moveable sintered metal product centrifugation de-oiling machine | |
| CN203695186U (en) | Rotary tool used for mounting and dismounting milling roller device of medium-speed roller coal mill | |
| CN210457329U (en) | Oil conveying pipe convenient to connect and fix | |
| CN205915218U (en) | A skip car that is used for steel pipe inner wall to throw ball | |
| CN115199861A (en) | Crawler-type self-adaptation pipeline inner wall spraying prosthetic devices | |
| CN211816417U (en) | Pipe gallery wall body construction equipment | |
| CN203019174U (en) | Cast tube cement lining coping device | |
| CN207415147U (en) | Pressure vessel spray gun device and sand blasting unit | |
| CN207087585U (en) | It is a kind of can batch machining nut production burnishing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |