CN107327552A - A kind of vertical Feed System With Ball Screw of big stroke - Google Patents
A kind of vertical Feed System With Ball Screw of big stroke Download PDFInfo
- Publication number
- CN107327552A CN107327552A CN201710649140.5A CN201710649140A CN107327552A CN 107327552 A CN107327552 A CN 107327552A CN 201710649140 A CN201710649140 A CN 201710649140A CN 107327552 A CN107327552 A CN 107327552A
- Authority
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- China
- Prior art keywords
- screw
- ball
- lifting
- leading screw
- servomotor
- 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.)
- Granted
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 24
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000005096 rolling process Methods 0.000 claims description 40
- 230000009021 linear effect Effects 0.000 claims description 37
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 230000033001 locomotion Effects 0.000 abstract description 10
- 230000003028 elevating effect Effects 0.000 abstract description 7
- 238000010276 construction Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 230000009347 mechanical transmission Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/22—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
- F16H25/2204—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with balls
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses a kind of big vertical Feed System With Ball Screw of stroke, including transmission component, lifting assembly.The transmission component is connected on pedestal, is connected by main transmission feed screw nut with lifting assembly.Drive nut to move by motor rotation, nut drives lifting assembly to complete elevating movement, and elevating mechanism has guide rail slide block, used in pairs with the guide rail that is connected on pedestal, in elevating movement, play guide effect.The present invention realizes the vertical Feed System With Ball Screw of big stroke of one-level lifting, and high Jing Yin transmission, transmission efficiency, kinematic accuracy is high, and simple in construction, high bearing capacity can realize output end easy motion.
Description
Technical field
The invention belongs to technical field of mechanical transmission, particularly a kind of vertical Feed System With Ball Screw of big stroke.
Background technology
Electric pushrod mechanism is a kind of drive device that motor rotary motion is changed into leading screw straight reciprocating motion, can be used
Use, to realize far distance controlled, centralized Control or automatically controlled as executing agency in various forms of technological processes.Electricity
Dynamic push rod is widely used in the fields such as machine driving, lifting platform and weight lifting, and transfer bar mechanism has numerous forms, including gas
Dynamic, hydraulic pressure, manually and electronic etc., by contrast, electric pushrod mechanism is with the obvious advantage, with noise is small, transmission efficiency
High, simple in construction, safe and easy to control the advantages of.
With the development of science and technology, the development of electric cylinder is gradually ripe in electric pushrod, lifted via single-stage to many
Level lifting development, application constantly extends.But the electric cylinder generally existing on market today a weakness, and electric cylinder is in fortune
Noise is excessive and ear-piercing when dynamic, and this is not suitable for being used in studio this to the exigent occasion of sound；In addition, being drilled for realization
Broadcast the working environment that room photography video recording automation and studio are special procured.At present also it is few can realize small size, automatically control, end
The electric pushrod mechanism of end position and speed controllable precise.
The content of the invention
Realized it is an object of the invention to provide one kind under less appearance and size high Jing Yin transmission, high bearing capacity,
High kinematic accuracy, the one-level of big stroke lift vertical Feed System With Ball Screw.
The technical solution for realizing the object of the invention is：A kind of vertical Feed System With Ball Screw of big stroke, including transmission group
Part and lifting assembly, lifting assembly are moved under the drive of transmission component, and the transmission component includes servomotor, pedestal, electricity
Machine back-up ring, leading screw sleeve, I profile shaft are held, back-up ring, bearing inner shield ring, leading screw back-up ring, ball-screw, anticollision outside motor key, bearing
Block, leading screw top base, II profile shaft are held, leading screw end cap, inner support plate, rolling linear guide；Lifting assembly includes ball-screw spiral shell
Mother, lifting assembly end cap, external support board, rolling linear guide sliding block, lifting base, lifting supporting plate；
The cross section of pedestal upper surface is hexagonal structure, the connected leading screw sleeve of base interior, leading screw sleeve and servo electricity
Motor with position sensing device is installed, servomotor is connected on pedestal in the middle of machine；Leading screw sleeve inner installs four I profile shafts being coaxially disposed
Hold, each two bearing is one group, the outer back-up ring of bearing and bearing inner shield ring, the bearing end away from motor are set in the middle of two groups of bearings
Leading screw back-up ring is set, and leading screw back-up ring coordinates with ball-screw；Ball-screw is matched somebody with somebody close to one end of servomotor by key with motor
Close, rotated under the driving of motor, shaft end of the ball-screw away from servomotor is installed two II profile shafts being coaxially disposed and held, should
Two II profile shafts are held in leading screw top base, and leading screw top base is close to the connected anticollison block in servomotor side, leading screw top base
The connected leading screw end cap in one end away from servomotor；
The cross section of lifting base is hexagonal structure, and lifting base is close to the connected three uniform liftings in servomotor side
Supporting plate, lifting supporting plate is connected with ball-screw nut, and three faces are fixed with six rolling linear guide cunnings on the inside of lifting base
Block, be connected two rolling linear guide sliding blocks per face, two rolling linear guide sliding blocks and corresponding one rolling on every face
Line slideway coordinates, and whole device totally three rolling linear guides, rolling linear guide is connected in corresponding inner support plate, and three
The uniform rolling linear guide of root realizes the guiding of lifting, and each inner support plate one end is fixedly connected with the base, the other end with silk
Thick stick top base is connected, and other three face is connected with three external support boards on the inside of lifting base, external support board away from servomotor side with
Lifting assembly end cap is connected.
Compared with prior art, its remarkable advantage is the present invention：1) present invention only utilize second-grade lifting, can be achieved compared with
Big stroke transmission under small size；2) present invention uses ball-screw, to realize elevating movement, to have with the direct-connected transmission of servomotor
Have simple in construction, the features such as size is small；3) present invention realizes the guide function of lifting using three uniform rolling linear guides,
Rigidity is strong, it is sufficient to meet the occasions such as lathe, high accuracy transmission control；4) running part of the present invention utilizes the ball-screw of large pitch
Auxiliary driving, and high accuracy, the transmission control of high repetitive positioning accuracy can be realized；5) present invention passes through electricity using electric pushrod mechanism
The advantages of structure designs such as dynamic driving, telescoping rod realize big stroke, terminal position controllable precise.
Brief description of the drawings
Fig. 1 is a kind of general structure profile of big vertical Feed System With Ball Screw of stroke of the present invention.
Fig. 2 is a kind of transmission component profile of big vertical Feed System With Ball Screw of stroke of the present invention.
Fig. 3 is a kind of lifting assembly profile of big vertical Feed System With Ball Screw of stroke of the present invention.
Embodiment
With reference to accompanying drawing, a kind of big vertical Feed System With Ball Screw of stroke of the invention, including transmission component and lifting assembly rise
Part of coming down to a lower group is moved under the drive of transmission component, and the transmission component includes servomotor 1, pedestal 2, Motor with position sensing device 3, screw set
4, I profile shaft of cylinder hold 5, motor key 6, back-up ring 7 outside bearing, bearing inner shield ring 8, leading screw back-up ring 9, ball-screw 11, anticollison block 12,
Leading screw top base 13, II profile shaft hold 14, leading screw end cap 15, inner support plate 18, rolling linear guide 19；Lifting assembly includes ball
Feed screw nut 10, lifting assembly end cap 16, external support board 17, rolling linear guide sliding block 20, lifting base 21, lifting supporting plate
22；
The cross section of the upper surface of pedestal 2 is the leading screw sleeve 4 that is connected inside hexagonal structure, pedestal 2, and leading screw sleeve 4 is with watching
Take and Motor with position sensing device 3 is installed in the middle of motor 1, servomotor 1 is connected on the base 2；Install four and be coaxially disposed in the inside of leading screw sleeve 4
I profile shaft hold 5, each two bearing is one group, the outer back-up rings 7 of bearings and bearing inner shield ring 8 is set in the middle of two groups of bearings, away from motor
1 bearing end sets leading screw back-up ring 9, and leading screw back-up ring 9 coordinates with ball-screw 11；Ball-screw 11 is close to servomotor 1
One end is coordinated by key 6 with motor 1, is rotated under the driving of motor 1, and shaft end of the ball-screw 11 away from servomotor 1 is installed
Two II profile shafts being coaxially disposed hold 14, and two II profile shafts hold 14 and are arranged in leading screw top base 13, and leading screw top base 13 is leaned on
The nearly connected anticollison block 12 of the side of servomotor 1, the connected leading screw end cap 15 in the one end of leading screw top base 13 away from servomotor 1；
The cross section of lifting base 21 is hexagonal structure, and lifting base 21 is connected three uniformly close to the side of servomotor 1
Lifting supporting plate 22, lifting supporting plate 22 and ball-screw nut 10 be connected, and three faces of the inner side of lifting base 21 are fixed with six
Rolling linear guide sliding block 20, be connected two rolling linear guide sliding blocks 20 per face, and two rolling linear guides on every face are slided
Block 20 coordinates with a corresponding rolling linear guide 19, whole device totally three rolling linear guides 19, rolling linear guide
19 are connected in corresponding inner support plate 18, and three uniform rolling linear guides 19 realize the guiding of lifting, each inner support
The one end of plate 18 is connected with pedestal 2, and the other end is connected with leading screw top base 13, other three face in the inner side of lifting base 21 with three
External support board 17 is connected, and external support board 17 is connected away from the side of servomotor 1 and lifting assembly end cap 16.
The ball-screw 11 and servomotor 1 are direct-connected, and lifting is realized under the drive of servomotor 1.
The pedestal 2, lifting assembly end cap 16, external support board 17, the material of inner support plate 18 are aluminium.
The ball-screw 11 uses great lead ball lead screw pair.
The present invention uses ball-screw with the direct-connected transmission of servomotor to realize elevating movement, with simple in construction, size
Small the features such as；The present invention realizes the guide function of lifting using three uniform rolling linear guides, and rigidity is strong, it is sufficient to meet machine
The occasions such as bed, high accuracy transmission control.
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment
With reference to Fig. 1~Fig. 3, a kind of big vertical Feed System With Ball Screw of stroke of the invention, including servomotor 1, pedestal 2,
Motor with position sensing device 3, leading screw sleeve 4, I profile shaft hold 5, motor key 6, back-up ring 7, bearing inner shield ring 8, leading screw back-up ring 9, ball outside bearing
Feed screw nut 10, ball-screw 11, anticollison block 12, leading screw top base 13, II profile shaft hold 14, leading screw end cap 15, lifting assembly end
Lid 16, external support board 17, inner support plate 18, rolling linear guide 19, rolling linear guide sliding block 20, lifting base 21, lifting
Supporting plate 22；
The cross section of the upper surface of pedestal 2 is the leading screw sleeve 4 that is connected inside hexagonal structure, pedestal 2, and leading screw sleeve 4 is with watching
Take and Motor with position sensing device 3 is installed in the middle of motor 1, servomotor 1 is connected on the base 2；Install four and be coaxially disposed in the inside of leading screw sleeve 4
I profile shaft hold 5, each two bearing is one group, the outer back-up rings 7 of bearings and bearing inner shield ring 8 is set in the middle of two groups of bearings, away from motor
1 bearing end sets leading screw back-up ring 9, and leading screw back-up ring 9 coordinates with ball-screw 11；Ball-screw 11 is close to servomotor 1
One end is coordinated by key 6 with motor 1, is rotated under the driving of motor 1, and shaft end of the ball-screw 11 away from servomotor 1 is installed
Two II profile shafts being coaxially disposed hold 14, and two II profile shafts hold 14 and are arranged in leading screw top base 13, and leading screw top base 13 is leaned on
The nearly connected anticollison block 12 of the side of servomotor 1, the connected leading screw end cap 15 in the one end of leading screw top base 13 away from servomotor 1；
The cross section of lifting base 21 is hexagonal structure, and lifting base 21 is connected three uniformly close to the side of servomotor 1
Lifting supporting plate 22, lifting supporting plate 22 and ball-screw nut 10 be connected, and three faces of the inner side of lifting base 21 are fixed with six
Rolling linear guide sliding block 20, be connected two rolling linear guide sliding blocks 20 per face, and two rolling linear guides on every face are slided
Block 20 coordinates with a corresponding rolling linear guide 19, whole device totally three rolling linear guides 19, rolling linear guide
19 are connected in corresponding inner support plate 18, and three uniform rolling linear guides 19 realize the guiding of lifting, each inner support
The one end of plate 18 is connected with pedestal 2, and the other end is connected with leading screw top base 13, other three face in the inner side of lifting base 21 with three
External support board 17 is connected, and external support board 17 is connected away from the side of servomotor 1 and lifting assembly end cap 16；
Described ball-screw 11 and servomotor 1 is direct-connected, and uses servomotor 1 to drive ball-screw 11 to realize liter
Drop motion.
Described pedestal 2, lifting assembly end cap 16, external support board 17, the material of inner support plate 18 are aluminium.
Described ball-screw 11 is to use large pitch roller screw pair.
Servomotor 1 starts, and servomotor 1 drives transmitting balls leading screw 11 to rotate by motor key 6, ball-screw 11
Rotation makes ball-screw nut 10 remote or close to servomotor, and ball-screw nut 10 drives lifting supporting plate 22, lifting
Supporting plate 22 drives the elevating movement of lifting base 21, and the connected rolling linear guide sliding block 20 of lifting base 21 is along in being connected in
Rolling linear guide 19 in supporting plate 18 is moved, and realizes guide effect, is connected in the plate of external support board 17 on lifting base 21
It is final to drive the end output device being connected on lifting assembly end cap 16 to complete elevating movement.
The present invention only utilizes second-grade lifting, you can realize the big stroke transmission under reduced size.
Claims (4)
1. a kind of vertical Feed System With Ball Screw of big stroke, it is characterised in that including transmission component and lifting assembly, lifting assembly exists
Moved under the drive of transmission component, the transmission component includes servomotor [1], pedestal [2], Motor with position sensing device [3], leading screw sleeve
[4], I profile shaft holds [5], motor key [6], bearing outer back-up ring [7], bearing inner shield ring [8], leading screw back-up ring [9], ball-screw
[11], anticollison block [12], leading screw top base [13], II profile shaft hold [14], leading screw end cap [15], inner support plate [18], rolling directly
Line guide rail [19]；Lifting assembly includes ball-screw nut [10], lifting assembly end cap [16], external support board [17], rolling directly
Line guide rail slide block [20], lifting base [21], lifting supporting plate [22]；
The cross section of pedestal [2] upper surface is connected leading screw sleeve [4], leading screw sleeve [4] inside hexagonal structure, pedestal [2]
With installing Motor with position sensing device [3] in the middle of servomotor [1], servomotor [1] is connected on pedestal [2]；Pacify inside leading screw sleeve [4]
Fill four I profile shafts being coaxially disposed to hold [5], each two bearing is one group, the outer back-up ring [7] of bearing and axle are set in the middle of two groups of bearings
Inner shield ring [8] is held, the bearing end away from motor [1] sets leading screw back-up ring [9], leading screw back-up ring [9] is matched somebody with somebody with ball-screw [11]
Close；Ball-screw [11] is coordinated close to one end of servomotor [1] by key [6] and motor [1], under the driving of motor [1]
Rotation, shaft end of the ball-screw [11] away from servomotor [1] installs two II profile shafts being coaxially disposed and holds [14], this two II
Profile shaft holds that [14] are inner installed in leading screw top base [13], and leading screw top base [13] is close to the square connected anticollison block of servomotor [1]
[12], the connected leading screw end cap [15] in the one end of leading screw top base [13] away from servomotor [1]；
The cross section of lifting base [21] is hexagonal structure, and lifting base [21] is just connected three close to servomotor [1]
The lifting supporting plate [22] of cloth, lifting supporting plate [22] is connected with ball-screw nut [10], three faces on the inside of lifting base [21]
Six rolling linear guide sliding blocks [20] are fixed with, be connected two rolling linear guide sliding blocks [20] per face, two on every face
Rolling linear guide sliding block [20] coordinates with a corresponding rolling linear guide [19], and lead by totally three rolling linears for whole device
Rail [19], rolling linear guide [19] is connected on corresponding inner support plate [18], three uniform rolling linear guides [19]
The guiding of lifting is realized, each inner support plate [18] one end is connected with pedestal [2], and the other end is solid with leading screw top base [13]
Even, other three face is connected with three external support boards [17] on the inside of lifting base [21], and external support board [17] is away from servomotor [1]
Side is connected with lifting assembly end cap [16].
2. a kind of big vertical Feed System With Ball Screw of stroke according to claim 1, it is characterised in that ball-screw [11] with
Servomotor [1] is direct-connected, and lifting is realized under the drive of servomotor [1].
3. a kind of big vertical Feed System With Ball Screw of stroke according to claim 1, it is characterised in that pedestal [2], lifting group
Part end cap [16], external support board [17], the material of inner support plate [18] are aluminium.
4. a kind of big vertical Feed System With Ball Screw of stroke according to claim 1, it is characterised in that ball-screw [11] is adopted
Use great lead ball lead screw pair.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710649140.5A CN107327552B (en) | 2017-08-02 | 2017-08-02 | Large-stroke vertical screw feed system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710649140.5A CN107327552B (en) | 2017-08-02 | 2017-08-02 | Large-stroke vertical screw feed system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107327552A true CN107327552A (en) | 2017-11-07 |
| CN107327552B CN107327552B (en) | 2024-04-05 |
Family
ID=60200004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710649140.5A Active CN107327552B (en) | 2017-08-02 | 2017-08-02 | Large-stroke vertical screw feed system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107327552B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108994730A (en) * | 2018-08-10 | 2018-12-14 | 重庆市巨吉机电设备有限公司 | Super large stroke tool feeding mechanism |
| CN109138497A (en) * | 2018-10-21 | 2019-01-04 | 济宁市昊通工程机械有限公司 | A kind of safe ladder cage combination unit of engineering adjustable height |
| CN111665142A (en) * | 2020-07-28 | 2020-09-15 | 华北水利水电大学 | Arch beam pressure equipartition loading test equipment for building |
| WO2022063054A1 (en) * | 2020-09-25 | 2022-03-31 | 浙江麦信智能装备有限公司 | Lifting assembly |
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| JPH116168A (en) * | 1997-06-16 | 1999-01-12 | Hinode Suido Kiki Kk | Lid for underground structure |
| JP2003021295A (en) * | 2001-07-09 | 2003-01-24 | Sukekawa Tekko Kk | Solid lubricant and device for applying solid lubricant |
| JP2009287584A (en) * | 2008-05-27 | 2009-12-10 | Yamaha Motor Co Ltd | Ball nut, single-axis robot, and electronic component transfer device |
| CN201529839U (en) * | 2009-05-27 | 2010-07-21 | 无锡华联精工机械有限公司 | Cutting torch hoisting mechanism of plasma cutting machine |
| CN104385260A (en) * | 2014-11-21 | 2015-03-04 | 华南理工大学 | Novel four-degree-of-freedom articulated robot structure |
| CN104578562A (en) * | 2014-12-26 | 2015-04-29 | 张家港斯克斯精密机械科技有限公司 | Large-stroke multi-section linear actuator mechanism |
| CN204752083U (en) * | 2015-05-27 | 2015-11-11 | 中航（上海）汽车技术有限公司 | Lead screw elevating system |
| CN207080571U (en) * | 2017-08-02 | 2018-03-09 | 南京理工大学 | A kind of vertical Feed System With Ball Screw of big stroke |
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2017
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH116168A (en) * | 1997-06-16 | 1999-01-12 | Hinode Suido Kiki Kk | Lid for underground structure |
| JP2003021295A (en) * | 2001-07-09 | 2003-01-24 | Sukekawa Tekko Kk | Solid lubricant and device for applying solid lubricant |
| JP2009287584A (en) * | 2008-05-27 | 2009-12-10 | Yamaha Motor Co Ltd | Ball nut, single-axis robot, and electronic component transfer device |
| CN201529839U (en) * | 2009-05-27 | 2010-07-21 | 无锡华联精工机械有限公司 | Cutting torch hoisting mechanism of plasma cutting machine |
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| CN104578562A (en) * | 2014-12-26 | 2015-04-29 | 张家港斯克斯精密机械科技有限公司 | Large-stroke multi-section linear actuator mechanism |
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| CN207080571U (en) * | 2017-08-02 | 2018-03-09 | 南京理工大学 | A kind of vertical Feed System With Ball Screw of big stroke |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108994730A (en) * | 2018-08-10 | 2018-12-14 | 重庆市巨吉机电设备有限公司 | Super large stroke tool feeding mechanism |
| CN108994730B (en) * | 2018-08-10 | 2021-02-02 | 重庆市巨吉机电设备有限公司 | Super-large stroke cutter feeding mechanism |
| CN109138497A (en) * | 2018-10-21 | 2019-01-04 | 济宁市昊通工程机械有限公司 | A kind of safe ladder cage combination unit of engineering adjustable height |
| CN111665142A (en) * | 2020-07-28 | 2020-09-15 | 华北水利水电大学 | Arch beam pressure equipartition loading test equipment for building |
| CN111665142B (en) * | 2020-07-28 | 2023-08-25 | 华北水利水电大学 | Arched beam pressure uniform distribution loading test equipment for building |
| WO2022063054A1 (en) * | 2020-09-25 | 2022-03-31 | 浙江麦信智能装备有限公司 | Lifting assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107327552B (en) | 2024-04-05 |
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