CN107775533A - A kind of clamping device of tap polissoir - Google Patents
A kind of clamping device of tap polissoir Download PDFInfo
- Publication number
- CN107775533A CN107775533A CN201711193240.8A CN201711193240A CN107775533A CN 107775533 A CN107775533 A CN 107775533A CN 201711193240 A CN201711193240 A CN 201711193240A CN 107775533 A CN107775533 A CN 107775533A
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- CN
- China
- Prior art keywords
- fixedly connected
- rack
- tap
- plate
- axis
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B29/00—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
- B24B29/02—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents designed for particular workpieces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses a kind of clamping device of tap polissoir, including bottom plate, snap ring, baffle plate, rocking handle, first bearing seat and the second rotating shaft, baffle plate upper end offers pilot hole, the upper end of baffle plate is flexibly connected by bolt with first bearing seat, bearing in first bearing seat is connected by the connected mode of interference to be fixedly connected with the second rotating shaft, the side of second rotating shaft is fixedly connected through pilot hole and with rocking handle, the upper surface of the bottom plate is provided with transmission device, the outer wall of the snap ring is connected with fastener, the transmission device includes fixed block and rack-plate, the fixed block and rack-plate are fixedly connected with the upper surface of bottom plate, the side of the fixed block is fixedly connected with the axis of guide, the outer wall of the axis of guide is socketed with contiguous block.The present invention, by the cooperation between the structure such as above-mentioned, faucet clamp device is improved, makes its clamping effect more preferably.
Description
Technical field
The present invention relates to the clamping device technical field of tap polissoir, specially a kind of tap polissoir
Clamping device.
Background technology
Tap is the popular appellation of water valve, for controlling the size switch of current, there is the effect of water saving.Tap is more
New replacement speed is very fast, develops into plating knob from old-fashioned casting iron craft, develops into the stainless steel list temperature single control fire hose again
Head, stainless steel double temperature double control tap, the semi-automatic tap in kitchen.Now, increasing consumer chooses tap, all can be from material
The many-sides such as matter, function, moulding consider.
Tap needs to be processed by shot blasting it in production, and it, which is polished, refers to utilize machinery, chemistry or electrochemistry
Effect, reduces workpiece surface roughness, to obtain bright, flat surface processing method.Generally utilize the mode of mechanization
, it is necessary to be clamped the position of tap before being processed by shot blasting tap, avoid misplacing in polishing process
Phenomenon, and then facilitate polishing wheel and it is processed by shot blasting.A kind of tap as disclosed in Chinese patent CN206286993U
Production technology mechanical polishing apparatus, for the program when needing to carry out surface polishing to the tap cast, staff is first
Tap is fixed by the first snap ring and the second snap ring, starts electric rotating machine, drives flax wheel to rotate, controls electric pushrod
Elongation, when flax wheel contacts with tap, electric pushrod stop motion is controlled, now, flax wheel starts to carry out tap
Polishing.The personnel of proceeding with one's work can drive tap to rotate jointly with rotation crank, the second snap ring with the first snap ring so that flax wheel
Tap is polished more comprehensive.But due to rotating clockwise or counterclockwise by electronic reel in the program, so that
Moved to the left or to the right by bracing wire band movable slider, and then sliding block drives the snap ring that its upper end connects to realize what is clamped to tap
Effect, moved because bracing wire is acted on along electronic reel wheel wall in pressure for a long time, its abrasive forces is larger, in turn results in bracing wire
Relaxation, the snap ring for causing top to connect are ineffective to faucet clamp.
The content of the invention
It is an object of the invention to provide a kind of clamping device of tap polissoir, possesses and faucet clamp is filled
Put and improved, the advantages of making its clamping effect more preferably, solve rotating clockwise or counterclockwise by electronic reel,
So as to be moved to the left or to the right by bracing wire band movable slider, and then sliding block drives the snap ring that its upper end connects to realize folder to tap
Tight effect, moved because bracing wire is acted on along electronic reel wheel wall in pressure for a long time, its abrasive forces is larger, in turn results in drawing
The relaxation of line, cause top connect snap ring it is ineffective to faucet clamp the problem of.
To achieve the above object, the present invention provides following technical scheme：A kind of clamping device of tap polissoir, bag
Bottom plate, snap ring, baffle plate, rocking handle, first bearing seat and the second rotating shaft are included, baffle plate upper end offers pilot hole, and the upper end of baffle plate leads to
Cross bolt to be flexibly connected with first bearing seat, the connected mode connection and the second rotating shaft that the bearing in first bearing seat passes through interference
It is fixedly connected, the side of the second rotating shaft is fixedly connected through pilot hole and with rocking handle, and the upper surface of the bottom plate is provided with transmission
Device, the outer wall of the snap ring are connected with fastener.
The transmission device includes fixed block and rack-plate, and the fixed block and rack-plate are fixedly connected with the upper of bottom plate
Surface, the side of the fixed block are fixedly connected with the axis of guide, and the outer wall of the axis of guide is socketed with contiguous block, the contiguous block
The back side be fixedly connected with support case, the inwall in the support case case is fixedly connected with servomotor, supports the side of case to open
Provided with axis hole, the side of the servo motor output shaft through axis hole and is fixedly connected with geared worm, the geared worm
Outer wall engagement is connected with transmission worm gear, and the side of the support case is fixedly connected with supporting plate, and the inner ring of the transmission worm gear leads to
Cross central shaft to be flexibly connected with supporting plate, the teeth of transmission worm gear engage connection with the rack row of rack plate surface, support case
Upper surface is fixedly connected with the lower surface of baffle plate.
The fastener includes limited block, and the side of the limited block is fixedly connected with the side of the second rotating shaft, spacing
The inwall of block offers chute, and the limited block is connected with sliding shoe by slide, and the lower surface of the sliding shoe is fixed
Drive link is connected with, the bottom of the drive link is fixedly connected through chute and with the outer wall of snap ring, the inner side of the limited block
Holddown spring is fixedly connected with, the side of the holddown spring is fixedly connected with the side of snap ring.
Preferably, the surface rack quantity of the rack-plate be no less than 25, and the spacing between each rack with
The size of transmission worm gear teeth is mutually adapted.
Preferably, the quantity of the axis of guide is two, and two axis of guides are arranged between two fixed blocks.
Preferably, the side of the contiguous block offers through hole, and the hole wall of through hole is fixedly connected with wear-resisting earthquake washer,
The size of wear-resisting earthquake washer and the size of axis of guide armshaft are mutually adapted.
Preferably, the inwall in the support case case is fixedly connected with Rubber shock-absorbing pad, and the size of Rubber shock-absorbing pad with
The shell of servomotor is mutually adapted.
Compared with prior art, beneficial effects of the present invention are as follows：
1st, the present invention starts servomotor by supporting the cooperation between case, servomotor and geared worm so that output
The rotation clockwise or counterclockwise of axle, and then control the rotation direction of geared worm, by the setting of transmission worm gear,
Cooperation between rack-plate, fixed block, the axis of guide and contiguous block, due to engaging connection between transmission worm gear and geared worm, from
And make it that transmission worm gear rotates clockwise or counterclockwise, but the teeth due to transmission worm gear engage with rack-plate rack face
Connection, and then by the rotation of transmission worm gear, moving back and forth for support case is realized, and cause the snap ring set above support case
The effect of clamping is realized to tap, during this, is slided by axial wall of the contiguous block along the axis of guide, support case is served
The firm effect of support.
2nd, the present invention is by setting the cooperation between limited block, sliding shoe and holddown spring, when support case drives two cards
During ring realizes clamping to tap, a pressure is produced to holddown spring, so as to cause the deformation of holddown spring, utilized
The elastic potential energy that holddown spring has in itself, and then cause better to faucet clamp.
In summary, faucet clamp device is improved, the advantages of making its clamping effect more preferably, solves and pass through
Electronic reel rotates clockwise or counterclockwise, so as to be moved to the left or to the right by bracing wire band movable slider, and then sliding block band
The snap ring of dynamic its upper end connection realizes the effect clamped to tap, because bracing wire is acted on along electronic reel in pressure for a long time
Take turns wall motion, its abrasive forces is larger, in turn results in the relaxation of bracing wire, cause top connect snap ring to faucet clamp effect not
The problem of good.
Brief description of the drawings
Fig. 1 is the front schematic view of structure of the present invention；
Fig. 2 is the vertical view cutaway drawing of transmission structures of the present invention；
Fig. 3 is the schematic top plan view of transmission worm gear structure of the present invention；
Fig. 4 is rack-plate of the present invention and the front schematic view of transmission worm gear structure；
Fig. 5 is the front section view of fastener structure of the present invention.
In figure：1- bottom plates, 2- snap rings, 3- transmission devices, 4- fasteners, 5- fixed blocks, 6- rack-plates, the 7- axis of guides,
8- contiguous blocks, 9- supports case, 10- servomotors, 11- geared worms, 12- transmission worm gears, 13- limited blocks, 14- sliding shoes, 15-
Holddown spring.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Referring to Fig. 1, the present invention provides a kind of technical scheme：A kind of clamping device of tap polissoir, including bottom
Plate 1, snap ring 2, baffle plate, rocking handle, first bearing seat and the second rotating shaft, baffle plate upper end offer pilot hole, and the upper end of baffle plate passes through
Bolt is flexibly connected with first bearing seat, and the bearing in first bearing seat is connected by the connected mode of interference to be consolidated with the second rotating shaft
Fixed connection, the side of the second rotating shaft are fixedly connected through pilot hole and with rocking handle, and the quantity of snap ring 2 is two, the second rotating shaft
Left end is welded with one of snap ring 2, and the top left of bottom plate 1 is welded with left frame, the connection side that left frame right side lower end passes through bolt
Formula is connected with second bearing seat, and the bearing in second bearing seat is connected with first rotating shaft by the connected mode of interference, first turn
Axle right-hand member is welded with another snap ring 2, and left frame upper end is welded with top plate, and top plate bottom left is connected by the connected mode of bolt
There is the second slide rail, the second slide rail right side slidingtype is connected with the second sliding block, and the connected mode for passing through bolt on the right side of the second sliding block connects
Rack is connected to, sector gear is fixed on top plate bottom by fix bar, and sector wheel and rack engagement, top plate bottom right leads to
The connected mode for crossing bolt is connected with swing seat, and swing seat lower end is hingedly connected with electric pushrod by hinge member, electronic to push away
Bar lower end is cut with scissors by hinge member and is articulated and connected with sector gear upper end, and rack lower end is connected with solid by the connected mode of bolt
Fixed board, the connected mode that fixed plate passes on left bolt are connected with electric rotating machine and 3rd bearing seat, and 3rd bearing seat is positioned at rotation
Below rotating motor, the 4th rotating shaft is connected with by shaft coupling on the output shaft on the left of electric rotating machine, the 4th rotating shaft left end passes through flat
The connected mode of key is connected with big belt pulley, and the bearing on 3rd bearing seat is connected with the 3rd turn by the connected mode of interference
Axle, the 3rd rotating shaft middle part are connected with small belt pulley by the connected mode of flat key, and the 3rd rotating shaft left end is welded with flax wheel, when need
When carrying out surface polishing to the tap that has cast, between tap is first placed on two snap rings 2 by staff, Ran Houtong
Cross transmission device 3 so that supporting case 9 to drive thereon, end connection device is to left movement, when two snap rings 2 fix tap
Afterwards, electric rotating machine is started, electric rotating machine drives the 4th axis of rotation, and the 4th rotating shaft drives big belt pulley to rotate, and big belt pulley leads to
Crossing flat belt drives small belt pulley to rotate, and small belt pulley drives the 3rd axis of rotation, and the 3rd rotating shaft drives flax wheel to rotate, control
Electric pushrod extends, and electric pushrod promotes sector gear counter-clockwise swing, and sector gear promotes rack to move downward, and rack promotes
Its lower end connection device moves downward, and when flax wheel contacts with tap, controls electric pushrod stop motion, now, burlap
Wheel starts to be polished tap.The personnel of proceeding with one's work can drive the second axis of rotation, the second rotating shaft with rotation crank, rocking handle
One of snap ring 2 is driven to rotate, two snap rings 2 drive tap to rotate jointly so that flax wheel polishes more to tap
Add comprehensively, after the completion of the polishing operation of tap, control electric rotating machine stops operating, while staff stops operating and shaken
Handle, control electric pushrod shorten, and electric pushrod promotes sector gear clockwise oscillation, and sector gear promotes rack to move upwards,
Rack promotes its lower end connection device to move upwards, when flax wheel returns to initial position, controls electric pushrod stop motion.So
Pass through transmission device 3 afterwards so that support case 9 drive thereon end connection device move right, facilitate staff to take tap
Under.Because also including reinforcement, be welded with reinforcement between left frame and top plate, can intensifier stability, bottom plate 1 it is upper
Surface is provided with transmission device 3, and the outer wall of snap ring 2 is connected with fastener 4.
Fig. 2 to 4 is referred to, transmission device 3 includes fixed block 5 and rack-plate 6, and fixed block 5 and rack-plate 6 are fixedly connected with
In the upper surface of bottom plate 1, the surface rack quantity of rack-plate 6 is no less than 25, and spacing and biography between each rack
The size of the dynamic teeth of worm gear 12 is mutually adapted, by the rotation of surface rack of the transmission worm gear 12 along rack-plate 6, it is achieved thereby that
The motion of case 9 is supported, and passes through the setting no less than 25 rack quantity so that support case 9 can control displacement to increase, and enter
And the convenient clamping dynamics to tap is adjusted, the side of fixed block 5 is fixedly connected with the axis of guide 7, the quantity of the axis of guide 7
For two, and two axis of guides 7 are arranged between two fixed blocks 5, are slided by axial wall of the contiguous block 8 along two axis of guides 7
It is dynamic, the firm effect of support is served to support case 9, the outer wall of the axis of guide 7 is socketed with contiguous block 8, and the side of contiguous block 8 opens up
There is a through hole, and the hole wall of through hole is fixedly connected with wear-resisting earthquake washer, the size of wear-resisting earthquake washer is big with the armshaft of the axis of guide 7
Small to be mutually adapted, during contiguous block 8 slides along the axial wall of the axis of guide 7, the setting of wear-resisting earthquake washer reduces through hole hole wall
With the frictional force between the armshaft of the axis of guide 7, and then cause transmission it is better, the back side of contiguous block 8 is fixedly connected with support case
9, support the inwall in case 9 casees to be fixedly connected with Rubber shock-absorbing pad, and the size of Rubber shock-absorbing pad and the shell of servomotor 10
It is mutually adapted, when servomotor 5 produces vibration because of work, Rubber shock-absorbing pad circle serves certain cushioning effect, reduces
Support frame 3 injures to caused by the shell of servomotor 10, and then make it that the output shaft institute power output of servomotor 5 is more sane, branch
Inwall in support case 9 casees is fixedly connected with servomotor 10, and the anti-overload ability of servomotor 10 itself is strong, and high speed performance is good, energy
Its rotating speed is precisely controlled, its model 60CB020C-50000, the side of support case 9 offers axis hole, and servomotor 10 exports
The side of axle is through axis hole and is fixedly connected with geared worm 11, starts servomotor 10 so that output shaft along clockwise or
Rotate in an anti-clockwise direction, and then control the rotation direction of geared worm 11, the outer wall engagement of geared worm 11 is connected with transmission
Worm gear 12, due to engaging connection between transmission worm gear 12 and geared worm 11, so that transmission worm gear 12 is along clockwise or inverse
Clockwise rotates, and the side of support case 9 is fixedly connected with supporting plate, and the inner ring of transmission worm gear 12 passes through central shaft and supporting plate
It is flexibly connected, the teeth of transmission worm gear 12 engage connection with the rack row on the surface of rack-plate 6, support upper surface and the baffle plate of case 9
Lower surface be fixedly connected, because the teeth of transmission worm gear 12 engage connection with the rack face of rack-plate 6, and then pass through transmission worm gear
12 rotation, moving back and forth for support case 9 is realized, and cause the snap ring 2 that the top of support case 9 is set to realize folder to tap
Tight effect.
Referring to Fig. 5, fastener 4 includes limited block 13, company is fixed in the side of limited block 13 and the side of the second rotating shaft
Connect, the inwall of limited block 13 offers chute, and limited block 13 is connected with sliding shoe 14 by slide, passes through the edge of sliding shoe 14
Slide, the effect of support guide being served for the motion of snap ring 2, the lower surface of sliding shoe 14 is fixedly connected with drive link,
The bottom of drive link is fixedly connected through chute and with the outer wall of snap ring 2, and the inner side of limited block 13 is fixedly connected with holddown spring
15, the side of holddown spring 15 is fixedly connected with the side of snap ring 2, is pressed from both sides when support case 9 drives two snap rings 2 to realize tap
In tight process, a pressure is produced to holddown spring 15, so as to cause the deformation of holddown spring 15, utilizes holddown spring 15
The elastic potential energy that body has, and then cause better to faucet clamp.
In summary, faucet clamp device is improved, the advantages of making its clamping effect more preferably, solves and pass through
Electronic reel rotates clockwise or counterclockwise, so as to be moved to the left or to the right by bracing wire band movable slider, and then sliding block band
The snap ring of dynamic its upper end connection realizes the effect clamped to tap, because bracing wire is acted on along electronic reel in pressure for a long time
Take turns wall motion, its abrasive forces is larger, in turn results in the relaxation of bracing wire, cause top connect snap ring to faucet clamp effect not
The problem of good.
Operation principle：The clamping device of the tap polissoir when in use, starts servomotor 10 so that output shaft
Rotation clockwise or counterclockwise, and then control the rotation direction of geared worm 11, and due to transmission worm gear 12
Teeth engage connection with the rack face of rack-plate 6, and then by the rotation of transmission worm gear 12, realize moving back and forth for support case 9,
And cause the snap ring 2 of the top setting of support case 9 to realize the effect of clamping to tap, when support case 9 drives two snap rings 2 right
During tap realizes clamping, a pressure is produced to holddown spring 15, and then cause better to faucet clamp.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of changes, modification can be carried out to these embodiments, replace without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (5)
1. a kind of clamping device of tap polissoir, including bottom plate (1), snap ring (2), baffle plate, rocking handle, first bearing seat and
Second rotating shaft, baffle plate upper end offer pilot hole, and the upper end of baffle plate is flexibly connected by bolt with first bearing seat, clutch shaft bearing
Bearing on seat is connected by the connected mode of interference to be fixedly connected with the second rotating shaft, and the side of the second rotating shaft passes through pilot hole simultaneously
It is fixedly connected with rocking handle, it is characterised in that：The upper surface of the bottom plate (1) is provided with transmission device (3), the snap ring (2)
Outer wall is connected with fastener (4)；
The transmission device (3) includes fixed block (5) and rack-plate (6), the fixed block (5) and the fixed company of rack-plate (6)
Be connected on the upper surface of bottom plate (1), the side of the fixed block (5) is fixedly connected with the axis of guide (7), the axis of guide (7) it is outer
Wall is socketed with contiguous block (8), and the back side of the contiguous block (8) is fixedly connected with support case (9), described to support in case (9) case
Inwall is fixedly connected with servomotor (10), and the side of support case (9) offers axis hole, servomotor (10) output shaft
Side is through axis hole and is fixedly connected with geared worm (11), and the outer wall engagement of the geared worm (11) is connected with transmission worm gear
(12), the side of the support case (9) is fixedly connected with supporting plate, and the inner ring of the transmission worm gear (12) passes through central shaft and branch
Fagging is flexibly connected, and the teeth of transmission worm gear (12) engage connection with the rack row on rack-plate (6) surface, support the upper of case (9)
Surface is fixedly connected with the lower surface of baffle plate；
The fastener (4) includes limited block (13), and the side of the limited block (13) is fixed with the side of the second rotating shaft to be connected
Connect, the inwall of limited block (13) offers chute, and the limited block (13) is connected with sliding shoe (14) by slide, described
The lower surface of sliding shoe (14) is fixedly connected with drive link, the bottom of the drive link through chute and with the outer wall of snap ring (2)
Be fixedly connected, be fixedly connected with holddown spring (15) on the inside of the limited block (13), the side of the holddown spring (15) with
The side of snap ring (2) is fixedly connected.
A kind of 2. clamping device of tap polissoir according to claim 1, it is characterised in that：The rack-plate
(6) surface rack quantity is no less than 25, and the size of the spacing between each rack and transmission worm gear (12) teeth
It is mutually adapted.
A kind of 3. clamping device of tap polissoir according to claim 1, it is characterised in that：The axis of guide
(7) quantity is two, and two axis of guides (7) are arranged between two fixed blocks (5).
A kind of 4. clamping device of tap polissoir according to claim 1, it is characterised in that：The contiguous block
(8) side offers through hole, and the hole wall of through hole is fixedly connected with wear-resisting earthquake washer, and the size of wear-resisting earthquake washer is with leading
It is mutually adapted to the size of axle (7) armshaft.
A kind of 5. clamping device of tap polissoir according to claim 1, it is characterised in that：The support case
(9) inwall in case is fixedly connected with Rubber shock-absorbing pad, and the size of Rubber shock-absorbing pad and the shell of servomotor (10) are mutual
Adaptation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711193240.8A CN107775533A (en) | 2017-11-24 | 2017-11-24 | A kind of clamping device of tap polissoir |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711193240.8A CN107775533A (en) | 2017-11-24 | 2017-11-24 | A kind of clamping device of tap polissoir |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107775533A true CN107775533A (en) | 2018-03-09 |
Family
ID=61430876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711193240.8A Pending CN107775533A (en) | 2017-11-24 | 2017-11-24 | A kind of clamping device of tap polissoir |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107775533A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108489655A (en) * | 2018-04-30 | 2018-09-04 | 无锡盛赛传感科技有限公司 | A kind of Miniature tension sensor stand |
| CN114535914A (en) * | 2022-03-31 | 2022-05-27 | 芜湖市长江起重设备制造有限公司 | Driving wheel and girder welding position frock for driving assembly |
-
2017
- 2017-11-24 CN CN201711193240.8A patent/CN107775533A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108489655A (en) * | 2018-04-30 | 2018-09-04 | 无锡盛赛传感科技有限公司 | A kind of Miniature tension sensor stand |
| CN114535914A (en) * | 2022-03-31 | 2022-05-27 | 芜湖市长江起重设备制造有限公司 | Driving wheel and girder welding position frock for driving assembly |
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| PB01 | Publication | ||
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Application publication date: 20180309 |