CN106082048A - A kind of jacking equipment safety device - Google Patents
A kind of jacking equipment safety device Download PDFInfo
- Publication number
- CN106082048A CN106082048A CN201610645802.7A CN201610645802A CN106082048A CN 106082048 A CN106082048 A CN 106082048A CN 201610645802 A CN201610645802 A CN 201610645802A CN 106082048 A CN106082048 A CN 106082048A
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- China
- Prior art keywords
- elevating bracket
- hole
- plate
- electric switch
- jacking equipment
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F17/00—Safety devices, e.g. for limiting or indicating lifting force
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Types And Forms Of Lifts (AREA)
- Invalid Beds And Related Equipment (AREA)
Abstract
The present invention relates to a kind of jacking equipment safety device, this device includes elevating bracket and stop pedestal, and stop pedestal is arranged along the lifting direction of jacking equipment, and stop pedestal is provided with tooth bar along lifting direction；Elevating bracket is connected with the lifting drive of jacking equipment by elastic parts；The elastic stretch direction of elastic parts is provided with electric switch, and under normal jacking condition, elastic parts does not contacts with electric switch；Jackshaft is fixing with the axle center of gear to be connected；Electric switch electrically connects with electromagnetic clutch；Electromagnetic clutch is arranged on jackshaft, and under normal jacking condition, electromagnetic clutch is in disengaged condition.When lifting drive breaks down, elevating bracket free-falling, elastic parts stretches touching electric switch, and electric switch controls electromagnetic clutch and encases jackshaft, and gear is locked on tooth bar.This device, when jacking equipment breaks down, realizes mechanical stop and the dual security protection of electrical control stop, improves the Security mechanism of jacking equipment jacking equipment.
Description
Technical field
The present invention relates to the safety device of a kind of jacking equipment, refer specifically to a kind of machine-electricity double protection of realizing
Jacking equipment safety device.
Background technology
Elevating function and corresponding mechanism it is both provided with, for heavier Lift Part or important field in a lot of plant equipment
Closing, the operation to lifting part must have safety prevention measure.In prior art, plant equipment elevating safety measure is adopted mostly
With arranging the methods such as security warning, isolating and protecting cover plate, buffer unit or simple mechanical formula stop, these methods are difficult to meet weight
The safety requirements of lowering or hoisting gear under other special operation conditions such as load.For simple mechanical formula stop preventer, when stop machine occurs
Structure loosens or protection can be caused to lose efficacy, it is possible to cause substantial spoilage or the security incident of equipment during the situation such as skidding.Institute
With, the jacking equipment safety device research and develop a kind of simple structure, having a multiple protection mechanisms is significant.
Summary of the invention
Present invention seek to address that the defect of prior art, it is provided that one both can realize mechanical type stop, again can be by electrically
Control to carry out the Double-lifting safety device of electromagnetic brake stop.
Technical scheme is as follows:
A kind of jacking equipment safety device, including elevating bracket, stop pedestal, described stop pedestal is along the lifting side of jacking equipment
It is provided with tooth bar along lifting direction in setting, described stop pedestal；
Described elevating bracket includes elastic parts, electric switch, gear, jackshaft, electromagnetic clutch；Described elevating bracket passes through
Elastic parts is connected with the lifting drive of jacking equipment, lifts under lifting drive drives；Described elastic parts
Elastic stretch direction be provided with electric switch, under normal jacking condition, elastic parts is in compressive state, elastic parts and electricity
Air cock does not contacts；
Axially arranged along gear of described jackshaft, jackshaft is fixing with the axle center of gear to be connected；Described electric switch with
Electromagnetic clutch electrically connects；Described electromagnetic clutch is arranged on jackshaft, under normal jacking condition, at electromagnetic clutch
Operating is normally engaged in disengaged condition, gear and tooth bar；
When lifting drive breaks down, during elevating bracket free-falling, elastic parts stretches touching electric switch, electric switch
Controlling electromagnetic clutch combination and encase jackshaft so that gear is locked on tooth bar, elevating bracket cannot continue to decline and realize electricity
The electromagnetic brake stop of gas control.
Described elastic parts includes spring, pulling plug, connecting rod, swinging plate；The internal diameter of described spring is straight more than connecting rod
Footpath；
Described elevating bracket includes the transverse slat being perpendicular to lift direction, and described transverse slat offers through hole I, described swinging plate
It is provided with through hole III；
Described through hole I and the diameter of through hole III are less than the internal diameter of spring more than the diameter of connecting rod；Described small end with draw
Tethering and connect, lower end is through through hole I and through hole III, and the lower end of connecting rod is provided with the fixing device I more than through hole III diameter, connecting rod upper
End is provided with fixing device I I more than through hole I；It is cased with spring on connecting rod between described swinging plate and through hole I.
Connecting rod between described swinging plate and through hole I is provided with spacer, and spring housing is loaded on spacer.
Described stop pedestal interval along lifting direction is arranged organizes scotch more, and described scotch is provided with and the side of lifting
To vertical table top；Described elevating bracket is provided with linkage board；Described linkage board includes plate I and plate II, the one of described plate I
End rivets with swinging plate activity, the other end and the upper end of plate II inclination or vertical be connected；The lower end of described plate II is to stop
The scotch direction of pedestal extends, corresponding scotch position；Elevating bracket also offers through hole II along the middle part of the riser in lifting direction,
The lower end part of plate II is in through hole II, and under normal jacking condition, plate II is at an angle with the riser of elevating bracket to be tilted towards
On；After lifting drive lost efficacy, linkage board rotates after being horizontally oriented to plate II, and the bottom of plate II passes through hole II
Towards stop pedestal, during elevating bracket continues to decline, the bottom of plate II is stuck on the platform of scotch, makes elevating bracket
Cannot continue to decline and realize mechanical type stop.
Offering pin-and-hole I in the middle part of described plate II, on elevating bracket, pin-and-hole II is offered in the wherein one or both sides of the left and right sides,
Loading swivel pin in pin-and-hole I, swivel pin, through the pin-and-hole II on elevating bracket, makes linkage board be installed on elevating bracket, described connection
Dynamic plate can rotate with swivel pin for axle；Described swinging plate can drive linkage board to rotate, and rotation direction is towards stop pedestal
Scotch；Under normal jacking condition, swinging plate and linkage board are static relative to elevating bracket, elevating bracket and linkage board and stop
Block does not contacts.
Being respectively provided with bearing in the left and right sides of gear and the left side of electromagnetic clutch, jackshaft is installed on by bearing
On elevating bracket.
The operation principle of the present invention is as follows: utilize elevating mechanism at normal elevating movement and inefficacy two states stress characteristic
Difference, by the joint-action mechanism between mechanical mechanism, it is achieved the disengagement of safety interlock or combination, thus realize machinery only
The function of safety protection of dynamic formula；Meanwhile, make electric switch disengage by mechanical linkage which controls or trigger, and then passing through electrical control
Electromagnetic clutch is made to realize relative disengagement or band-type brake with pinion and rack, it is achieved the function of safety protection of electromagnetic brake formula.
Concrete implementation mode is: when machinery is in normal jacking condition, pulling of lifting driver part
Under, pulling plug is by mutually driving elevating bracket to carry out elevating movement, now, bullet against effect between fixing device I, swinging plate, spacer
Spring is in compressive state, the plate II of linkage board and lifting direction inclination at an angle, and the end of plate II is positioned at through hole II,
Spatially separate with scotch；Electric switch is not triggered simultaneously, and electromagnetic clutch is in disengaged condition, wheel and rack
Between normally engage operating, elevating mechanism proper motion.When lifting driver part catastrophic failure, pulling plug loses elevating bracket
Pulling force upwards, whole elevating bracket freely glides, now, under the elastic return effect of the spring compressed, whole elastic group
Part moves down relative to elevating bracket, and the pin of stirring of swinging plate end stirs the linkage board being attached thereto, and makes linkage board around hinge
The center of pin turns clockwise, until plate II rotate to horizontal level and with lifting direction vertical, the lower end of plate II passes logical
Hole II stretches to stop pedestal；When elastic parts move down make fixing device I I and elevating bracket transverse slat top contact time, linkage board
Plate II is horizontally oriented, and during elevating bracket glides, plate II passes the end of through hole II and snaps into scotch and lifting side
On vertical table top, thus elevating bracket entirety is stopped relative to stop pedestal, it is achieved that mechanical type stop；Meanwhile,
During being rotated clockwise to horizontal level due to linkage board, electric switch is triggered in the outer of linkage board, passes through electrical control
Make electromagnetic clutch combine and embrace jackshaft, thus cause gear to stop, at tooth with the engaged transmission of the tooth bar on stop pedestal
Wheel, tooth bar link realize the stop of elevating bracket, it is achieved that the electromagnetic brake stop of electrical control.
The advance of the present invention is: by arranging linkage board and scotch, when lifting driver part and losing efficacy, passes through machine
The joint-action mechanism of tool parts realizes the mechanical stop of lowering or hoisting gear；Meanwhile, arrange between elevating bracket and stop pedestal gear,
Rack gear mechanism, when lifting driver part and losing efficacy by triggering electric switch, it is achieved the band-type brake stop of electromagnetic clutch；If
Put dual means of retention, even if one of which means of retention lost efficacy, also ensure that lifting dress under lifting driver part failure conditions
The stop put, thus substantially increase the safety of equipment, reduce accident rate；Pulling plug arranges upper limit part and lower limit
Part, limits the effective travel of pulling plug, and in the case of lifting driver part lost efficacy, the existence of upper limit part makes linkage board more smart
Really it is stuck on scotch, is effectively realized mechanical stop.
Accompanying drawing explanation
Fig. 1 is the front view of safety device of the present invention
Fig. 2 is the side view of safety device of the present invention
Fig. 3 is the partial view under arrested state
In figure, each sequence number indicates and the structure title of correspondence is as follows: 1-scotch, 2-linkage board, and 21-plate I, 22-plate II, 23-sell
Hole I, 3-elevating bracket, 31-through hole I, 32-through hole II, 33-pin-and-hole II, 4-spring, 5-pulling plug, 6-connecting rod, 7-spacer, 8-stirs
Plate, 81-stirs pin, 9-fixing device I I, 10-electric switch, 11-swivel pin, 12-gear, 13-jackshaft, 14-tooth bar, and 15-is only
Moving base, 16-electromagnetic clutch, 17-bearing, 18-fixing device I.
Detailed description of the invention
The present invention is further illustrated with embodiment below in conjunction with the accompanying drawings.
Embodiment 1
As Figure 1-3, a kind of jacking equipment safety device, including elevating bracket 3, stop pedestal 15, described stop pedestal 15
Lifting direction along jacking equipment is arranged, and described stop pedestal 15 is provided with tooth bar 14 along lifting direction；
Elevating bracket 3 includes elastic parts, electric switch 10, gear 12, jackshaft 13, electromagnetic clutch 16；Described elevating bracket 3
It is connected with the lifting drive of jacking equipment by elastic parts, lifts under lifting drive drives；Described elasticity
The elastic stretch direction of assembly is provided with electric switch 10, and under normal jacking condition, elastic parts is in compressive state, elastic group
Part does not contacts with electric switch 10；
Axially arranged along gear 12 of described jackshaft 13, jackshaft 13 is fixing with the axle center of gear 12 to be connected；Described electricity
Air cock 10 electrically connects with electromagnetic clutch 16；Described electromagnetic clutch 16 is arranged on jackshaft 13, is normally lifting shape
Under state, electromagnetic clutch 16 is in disengaged condition, gear 12 and tooth bar 14 and normally engages operating；
When lifting drive breaks down, during elevating bracket 3 free-falling, elastic parts stretches touching electric switch 10, electrically
Switch 10 control electromagnetic clutch 16 combines and encases jackshaft 13 so that gear 12 is locked on tooth bar 14, and elevating bracket cannot continue
Continue and decline and realize the electromagnetic brake stop of electrical control.
Described elastic parts includes spring 4, pulling plug 5, connecting rod 6, swinging plate 8；The internal diameter of described spring 4 is more than connecting rod
The diameter of 6；
Described elevating bracket 3 includes the transverse slat being perpendicular to lift direction, and described transverse slat offers through hole I31, and described dials
Dynamic plate 8 is provided with through hole III；
Described through hole I31 and the diameter of through hole III are less than the internal diameter of spring 4 more than the diameter of connecting rod 6；On described connecting rod 6
End is connected with pulling plug 5, and lower end is through through hole I31 and through hole III, and the lower end of connecting rod 6 is provided with the fixture more than through hole III diameter
I18, the upper end of connecting rod 6 is provided with fixing device I I9 more than through hole I31；On connecting rod 6 between described swinging plate 8 and through hole I31
It is cased with spring 4.
Connecting rod 6 between described swinging plate 8 and through hole I31 is provided with spacer 7, and spring 4 is set on spacer 7.
Described stop pedestal 15 interval along lifting direction arranges many group scotch 1, and described scotch 1 is provided with and rises
The table top that fall direction is vertical；Described elevating bracket 3 is provided with linkage board 2；Described linkage board 2 includes plate I21 and plate II22, institute
The movable riveting of the one end of the plate I21 stated and swinging plate 8, the other end and the inclination of the upper end of plate II22 or vertical be connected；Described
The lower end of plate II22 extends to scotch 1 direction of stop pedestal 15, corresponding scotch 1 position；Elevating bracket 3 is along lifting direction
Through hole II32 is also offered at the middle part of riser, and the lower end part of plate II22 is in through hole II32, under normal jacking condition, plate II22 with
The riser of elevating bracket 3 is at an angle to be tilted upward；After lifting drive lost efficacy, linkage board 3 rotates to plate II22
After horizontal direction, the bottom of plate II22 passes through hole II32 towards stop pedestal 15, continues the process declined at elevating bracket 3
In, the bottom of plate II22 is stuck on the platform of scotch 1, makes elevating bracket cannot continue to decline and realize mechanical type stop.
Offering pin-and-hole I23 in the middle part of described plate II22, on elevating bracket, pin is offered in the wherein one or both sides of the left and right sides
Hole II33, loads swivel pin 11 in pin-and-hole I23, swivel pin 11, through the pin-and-hole II33 on elevating bracket 3, makes linkage board 2 be installed on
On elevating bracket 3, described linkage board 2 can rotate with swivel pin 11 for axle；Described swinging plate 8 can drive linkage board 2 turns
Dynamic, rotation direction is towards the scotch 1 of stop pedestal 15；Under normal jacking condition, swinging plate 8 and linkage board 2 are relative to liter
Fall seat 3 is static, and elevating bracket 3 and linkage board 2 do not contact with scotch 1.
Be respectively provided with bearing 17 in the left side of the left and right sides of gear 12 and electromagnetic clutch 16, jackshaft 13 passes through axle
Hold 17 to be installed on elevating bracket 3.
The operation principle of the present invention is as follows: utilize elevating mechanism at normal elevating movement and inefficacy two states stress characteristic
Difference, by the joint-action mechanism between mechanical mechanism, it is achieved the disengagement of safety interlock or combination, thus realize machinery only
The function of safety protection of dynamic formula；Meanwhile, make electric switch disengage by mechanical linkage which controls or trigger, and then passing through electrical control
Electromagnetic clutch is made to realize relative disengagement or band-type brake with pinion and rack, it is achieved the function of safety protection of electromagnetic brake formula.
Concrete implementation mode is: when machinery is in normal jacking condition, pulling of lifting driver part
Under, pulling plug 5 drives elevating bracket 3 to carry out elevating movement by mutual between fixing device I 18, swinging plate 8, spacer 7 against effect, this
Time, spring 4 is in compressive state, the plate II22 of linkage board 2 and lifting direction inclination at an angle, the bottom of plate II22
It is positioned at through hole II32, spatially separates with scotch 1；Electric switch 10 is not triggered simultaneously, at electromagnetic clutch 16
Operating, elevating mechanism proper motion is normally engaged between disengaged condition, gear 12 with tooth bar 14.When lifting driver part is unexpected
During inefficacy, pulling plug 5 loses elevating bracket 3 pulling force upwards, and whole elevating bracket 3 freely glides, now, at the spring compressed
Under the elastic return effect of 4, whole elastic parts moves down relative to elevating bracket 3, and the pin 81 of stirring of swinging plate 8 end is stirred
The linkage board 2 being attached thereto, makes linkage board 2 turn clockwise around the center of swivel pin 11, until plate II22 rotates to level
Position is the most vertical with lifting direction, and the lower end of plate II22 passes through hole II32 and stretches to stop pedestal 15；When elastic parts is to moving down
Dynamic when making fixing device I I9 and elevating bracket 3 transverse slat top contact, the plate II22 of linkage board 2 is horizontally oriented, and glides at elevating bracket
During continuation, plate II22 passes the end of through hole II32 and snaps on the table top that scotch 1 is vertical with lifting direction, thus rises
Fall seat 3 entirety is stopped relative to stop pedestal 15, it is achieved that mechanical type stop；Meanwhile, due to linkage board 2 dextrorotation
During going to horizontal level, electric switch 10 is triggered in the outer of linkage board 2, makes electromagnetic clutch 16 tie by electrical control
Fill the span of a man's arms jackshaft 13, thus cause gear 12 to stop, at gear, tooth bar with the engaged transmission of the tooth bar 14 on stop pedestal 15
Link realizes the stop of elevating bracket, it is achieved that the electromagnetic brake stop of electrical control.
Claims (5)
1. a jacking equipment safety device, including elevating bracket (3), stop pedestal (15), it is characterised in that:
Described stop pedestal (15) is arranged along the lifting direction of jacking equipment, and described stop pedestal (15) is upper along lifting direction
It is provided with tooth bar (14)；
Described elevating bracket (3) includes elastic parts, electric switch (10), gear (12), jackshaft (13), electromagnetic clutch
(16)；Described elevating bracket (3) is connected with the lifting drive of jacking equipment by elastic parts, drives at lifting drive
Dynamic lower lifting；The elastic stretch direction of described elastic parts is provided with electric switch (10), under normal jacking condition, and elastic group
Part is in compressive state, and elastic parts does not contacts with electric switch (10)；
Axially arranged along gear (12) of described jackshaft (13), jackshaft (13) is fixing with the axle center of gear (12) to be connected；
Described electric switch (10) electrically connects with electromagnetic clutch (16)；Described electromagnetic clutch (16) is arranged on jackshaft (13)
On, under normal jacking condition, electromagnetic clutch (16) is in disengaged condition, gear (12) and tooth bar (14) and normally engages fortune
Turn；
When lifting drive breaks down, during elevating bracket (3) free-falling, elastic parts stretches touching electric switch (10),
Electric switch (10) controls electromagnetic clutch (16) combination and encases jackshaft (13) so that gear (12) is locked at tooth bar (14)
On.
2. jacking equipment safety device as claimed in claim 1, it is characterised in that: described elastic parts include spring (4),
Pulling plug (5), connecting rod (6), swinging plate (8)；The internal diameter of described spring (4) is more than the diameter of connecting rod (6)；
Described elevating bracket (3) includes the transverse slat being perpendicular to lift direction, and described transverse slat offers through hole I(31), described
Swinging plate (8) be provided with through hole III；
Described through hole I(31) and the diameter of through hole III more than the diameter of connecting rod (6) less than the internal diameter of spring (4)；Described company
Bar (6) upper end is connected with pulling plug (5), and lower end passes through hole I(31) and through hole III, the lower end of connecting rod (6) is provided with more than through hole
The fixing device I (18) of III diameter, the upper end of connecting rod (6) is provided with more than through hole I(31) fixing device I I(9)；Described swinging plate
(8) and through hole I(31) between connecting rod (6) on be cased with spring (4).
3. jacking equipment safety device as claimed in claim 2, it is characterised in that: described swinging plate (8) and through hole I(31)
Between connecting rod (6) be provided with spacer (7), spring (4) is set on spacer (7).
4. jacking equipment safety device as claimed in claim 2, it is characterised in that: described stop pedestal (15) is along lifting side
Upwards interval arranges and organizes scotch (1) more, and described scotch (1) is provided with the table top vertical with lifting direction；Described lifting
Seat (3) is provided with linkage board (2)；Described linkage board (2) includes plate I(21) and plate II(22), described plate I(21) one end
Riveting movable with swinging plate (8), the other end and plate II(22) upper end inclination or vertical be connected；Described plate II(22) under
Hold and extend to scotch (1) direction of stop pedestal (15), corresponding scotch (1) position；
Described plate II(22) middle part offer pin-and-hole I(23), pin-and-hole I(23) in load swivel pin (11), by swivel pin (11)
Being installed on elevating bracket (3), described linkage board (2) can be that axle rotates with swivel pin (11)；Described swinging plate (8) can
Driving linkage board (2) to rotate, rotation direction is towards the scotch (1) of stop pedestal (15)；Under normal jacking condition, swinging plate
(8) and linkage board (2) is static relative to elevating bracket (3), elevating bracket (3) and linkage board (2) do not contact with scotch (1).
5. jacking equipment safety device as claimed in claim 1, it is characterised in that: at the left and right sides and the electricity of gear (12)
The left side of magnet clutch (16) is respectively provided with bearing (17), and jackshaft (13) is installed on elevating bracket (3) by bearing (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610645802.7A CN106082048B (en) | 2016-08-09 | 2016-08-09 | A kind of jacking equipment safety device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610645802.7A CN106082048B (en) | 2016-08-09 | 2016-08-09 | A kind of jacking equipment safety device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106082048A true CN106082048A (en) | 2016-11-09 |
| CN106082048B CN106082048B (en) | 2018-04-03 |
Family
ID=57455730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610645802.7A Expired - Fee Related CN106082048B (en) | 2016-08-09 | 2016-08-09 | A kind of jacking equipment safety device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106082048B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108002319A (en) * | 2017-12-29 | 2018-05-08 | 青岛中海德自动化设备有限公司 | A kind of falling-proof safety device |
| CN110407059A (en) * | 2019-07-02 | 2019-11-05 | 广西科技大学 | Rope chain jacking system safety device |
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| CA2547286A1 (en) * | 2006-05-19 | 2007-11-19 | Gerard Noel | Braking device for elevating platform assembly |
| CN201419993Y (en) * | 2009-03-26 | 2010-03-10 | 烟台未来自动装备有限责任公司 | Mechanical electromagnetic safe lock for buried type lifting machine |
| US20120210890A1 (en) * | 2011-02-23 | 2012-08-23 | Itw Packaging Systems Group Gmbh | Lifting apparatus with safety device |
| CN202924690U (en) * | 2012-11-26 | 2013-05-08 | 甘肃建投装备制造有限公司 | Multifunctional intelligent overhauling and detecting platform |
| CN103771306A (en) * | 2014-01-24 | 2014-05-07 | 江苏普腾停车设备有限公司 | Mechanical type dynamic anti-falling device and lifting platform assembled with same |
| CN204737705U (en) * | 2015-06-04 | 2015-11-04 | 安徽鲲鹏装备模具制造有限公司 | Lifting device for prevent whereabouts |
| CN206014348U (en) * | 2016-08-09 | 2017-03-15 | 广西科技大学 | A kind of jacking equipment safety device |
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2016
- 2016-08-09 CN CN201610645802.7A patent/CN106082048B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2547286A1 (en) * | 2006-05-19 | 2007-11-19 | Gerard Noel | Braking device for elevating platform assembly |
| CN201419993Y (en) * | 2009-03-26 | 2010-03-10 | 烟台未来自动装备有限责任公司 | Mechanical electromagnetic safe lock for buried type lifting machine |
| US20120210890A1 (en) * | 2011-02-23 | 2012-08-23 | Itw Packaging Systems Group Gmbh | Lifting apparatus with safety device |
| CN202924690U (en) * | 2012-11-26 | 2013-05-08 | 甘肃建投装备制造有限公司 | Multifunctional intelligent overhauling and detecting platform |
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| CN204737705U (en) * | 2015-06-04 | 2015-11-04 | 安徽鲲鹏装备模具制造有限公司 | Lifting device for prevent whereabouts |
| CN206014348U (en) * | 2016-08-09 | 2017-03-15 | 广西科技大学 | A kind of jacking equipment safety device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108002319A (en) * | 2017-12-29 | 2018-05-08 | 青岛中海德自动化设备有限公司 | A kind of falling-proof safety device |
| CN110407059A (en) * | 2019-07-02 | 2019-11-05 | 广西科技大学 | Rope chain jacking system safety device |
| CN110407059B (en) * | 2019-07-02 | 2024-01-16 | 广西科技大学 | Safety protection device for cable chain lifting system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106082048B (en) | 2018-04-03 |
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