CN109592608A - A kind of safety tongs and loading platform - Google Patents
A kind of safety tongs and loading platform Download PDFInfo
- Publication number
- CN109592608A CN109592608A CN201811607903.0A CN201811607903A CN109592608A CN 109592608 A CN109592608 A CN 109592608A CN 201811607903 A CN201811607903 A CN 201811607903A CN 109592608 A CN109592608 A CN 109592608A
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- CN
- China
- Prior art keywords
- loading platform
- guide groove
- safety tongs
- slide plate
- fixed pulley
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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
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/07509—Braking
-
- 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
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/07504—Accessories, e.g. for towing, charging, locking
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Handcart (AREA)
Abstract
The invention belongs to safe technical field of auxiliary equipment, more particularly to a kind of safety tongs and loading platform, wherein, safety tongs includes clamp block plate, it is provided with trapezoidal guide groove on clamp block plate, and is provided with two braked wheels of the bevel edge rolling along guide groove in guide groove, the also vertical slide plate for being provided with guide rod and move up and down along guide rod on clamp block plate, the both ends of slide plate are flexibly connected with two braked wheels respectively, and the elastic component for pushing slide plate to the narrow end of guide groove is additionally provided on guide rod.Safety tongs is arranged on loading platform, when the excessive velocities of loading platform decline or traction fracture of rope start safety tongs, the effect that slide plate is subject to elastic component is mobile to the narrow end of guide groove, two braked wheels are close to centre by the constraint of guide groove, to make two braked wheels hold directive slide track tightly under the action of guide groove inclined-plane, achieve the effect that braking, to improve the safety of loading platform.
Description
Technical field
The invention belongs to safe technical field of auxiliary equipment, and in particular to a kind of safety tongs and loading platform.
Background technique
The automatic access of cargo is the vertical displacement movement of horizontal movement by piler, loading platform in storied 3-D warehouse
And moving forward and backward for pallet fork combines to complete, wherein loading platform is the important component of piler, is mainly used for placing and remove
Cargo transport object.
Currently, the existing loading platform for piler and special safety guard is not configured, when loading platform is under
Drop hypervelocity, or hang the wire cable rupture for setting loading platform lifting or when the case where being deviate from by pulley occurs, can not in time by
The loading platform of high-speed cruising stops, and there are some potential safety problemss;Therefore it provides a kind of highly-safe safety tongs and loading
Platform is those skilled in the art's technical problem urgently to be resolved.
Summary of the invention
In order to solve the above problems existing in the present technology, the present invention provides a kind of safety for improving loading platform safety
Pincers, have the technical issues of security risk to solve loading platform in the prior art.
The present invention implements by the following technical programs:
A kind of safety tongs, including clamp block plate are provided with trapezoidal guide groove on the clamp block plate, and set in the guide groove
Two braked wheels of the bevel edge rolling along the guide groove are equipped with, it is also vertical on the clamp block plate to be provided with guide rod and edge
The slide plate that the guide rod moves up and down, the both ends of the slide plate are flexibly connected with two braked wheels respectively, the guiding
The elastic component for pushing the slide plate to the narrow end of the guide groove is additionally provided on bar.
In order to preferably realize the present invention, make further optimization, the guide rod and the guiding in said structure
Slot is separately positioned on the opposite side of the clamp block plate, and swing arm is provided on the slide plate, and the braked wheel is living by the swing arm
It is dynamic to be arranged on the slide plate, the slide opening moved up and down convenient for swing arm is additionally provided on the clamp block plate.
In order to preferably realize the present invention, make further optimization in said structure, the swing arm includes shaft and pendulum
Dynamic portion, one end of the shaft are rotatably arranged on the slide plate, and the other end of the shaft passes through the slide opening and the pendulum
Dynamic portion's connection, the braked wheel are arranged in the swing arm.
In order to preferably realize the present invention, makees further optimization in said structure, be additionally provided on the clamp block plate
Two directive wheels for guiding.
In conclusion safety tongs provided by the present invention has following technical effect that
By the safety tongs on being mounted on loading platform, the directive slide track of loading platform is set between two braked wheels, when this
When safety tongs starts, slide plate is mobile to the narrow end of guide groove by the effect of elastic component, makes two braked wheels by guide groove
It constrains to intermediate close, so that two braked wheels be made to hold directive slide track tightly under the action of guide groove inclined-plane, reaches the effect of braking
Fruit, to improve the safety of loading platform.
The present invention also provides a kind of loading platforms with the safety tongs comprising loading platform ontology and speed-limiting device, it is described
The first fixed pulley for hanging and setting convenient for traction rope is provided in loading platform ontology, it is characterised in that: further include above-mentioned safety tongs, institute
The directive slide track for stating loading platform ontology is located between two braked wheels, is additionally provided with described in pulling downward on the loading platform ontology
The pull rod of first fixed pulley;
The speed-limiting device includes limiter of speed, speed limit rope and reverse wheel, and the speed limit becket bridle is wound on the limiter of speed and institute
It states on reverse wheel, the second fixed pulley is provided on the safety tongs, is provided on the loading platform ontology for triggering safety tongs
Trigger device and activated lever, the sliding block of third fixed pulley and horizontal sliding, the touching are provided on the trigger device
Touch crank is provided on dynamic lever, described one end for touching crank is fixedly connected with the speed limit rope, the touch crank
The other end is supported and is set on the slide block, drag-line is provided on the pull rod, the other end of the drag-line successively bypasses the third
Fixed pulley, sliding block and the second fixed pulley are connect with the slide plate.
In order to preferably realize the present invention, make further optimization, setting in the loading platform ontology in said structure
There is partition, the upper end of the pull rod passes through the partition and connect with the fixed pulley, and the lower end of the pull rod is provided with fixture block, institute
It states and is provided with pulling spring between fixture block and the partition, the drag-line is connect with the fixture block.
In order to preferably realize the present invention, make further optimization, the height of second fixed pulley in said structure
Lower than the height that the slide plate is in minimum point.
In order to preferably realize the present invention, makees further optimization in said structure, be provided on the activated lever
Torsional spring, one end of the torsional spring are connect with the loading platform ontology, and the other end and the activated lever of the torsional spring connect
It connects.
In order to preferably realize the present invention, make further optimization in said structure, the touch crank includes being used for
Connect the interconnecting piece of speed limit rope and set supporting for the sliding block for supporting and set portion, the interconnecting piece and it is described support the portion of setting with it is described
Activated lever is fixedly connected.
In order to preferably realize the present invention, makees further optimization in said structure, be additionally provided on the limiter of speed
For adjusting the tensioning wheel of the rate of tension of speed limit line.
Loading platform provided by the present invention has following technical effect that
The loading platform has the function of speed-limiting protection and breaking rope protecting simultaneously, when loading platform ontology is in the feelings operated normally
When condition, drag-line is in tight state, and effect of the slide plate by drag-line on safety tongs, two braked wheels are located at the width of guide groove
End;When the falling speed of loading platform ontology be more than limiter of speed setting speed when, limiter of speed then can locking speed limit rope, activated lever
It will rotate, being moved to the left to the sliding block being located on drag-line makes drag-line just be in loosening state, thus start safety tongs,
To prevent loading platform ontology from continuing to decline;After drawing fracture of rope or deviating from from the first fixed pulley, pull rod will be by first
Fixed pulley pulls downward on, and drag-line is made to be in loosening state, and safety tongs will start, so that realizing prevents loading platform from continuing whereabouts
It happens, to improve the safety of the loading platform.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of structural schematic diagram of safety tongs provided by the invention;
Fig. 2 is the cross-sectional view of A-A in Fig. 1;
Fig. 3 is a kind of structural schematic diagram of loading platform provided by the invention;
Fig. 4 is a kind of loading platform side view provided by the invention;
Fig. 5 is the partial enlarged view in the portion B in Fig. 4;
Fig. 6 is the structural schematic diagram of the activated lever in a kind of loading platform provided by the invention.
Appended drawing reference:
1, clamp block plate;2, guide groove;3, braked wheel;4, guide rod;5, slide plate;6, elastic component;7, swing arm;71, shaft;
72, swing part;8, directive wheel;9, loading platform ontology;10, the first fixed pulley;11, directive slide track;12, pull rod;13, limiter of speed;
14, speed limit rope;15, reverse wheel;16, the second fixed pulley;17, activated lever;18, third fixed pulley;19, sliding block;20, drag-line;
21, partition;22, fixture block;23, spring is pulled;24, torsional spring;25, interconnecting piece;26, to setting portion.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, technical solution of the present invention will be carried out below
Detailed description.Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art are obtained all without making creative work
Other embodiment belongs to the range that the present invention is protected.
Embodiment one:
A kind of safety tongs, as depicted in figs. 1 and 2 comprising clamp block plate 1 is provided with trapezoidal guide groove 2 on clamp block plate 1,
And two braked wheels 3 of the bevel edge rolling along guide groove 2 are provided in guide groove 2, it is also vertical on clamp block plate 1 to be provided with guiding
Bar 4 and the slide plate 5 moved up and down along guide rod 4, the both ends of slide plate 5 are flexibly connected with two braked wheels 3 respectively, guide rod 4
On be additionally provided with the elastic component 6 for pushing slide plate 5 to the narrow end of guide groove 2.
By a kind of safety tongs of above structure, when being installed on loading platform ontology 9, the directive slide track 11 of loading platform
Between two braked wheels 3, and two braked wheels 3 are in the wide end of guide groove 2, keep the spacing between two braked wheels 3 big
In the width of directive slide track 11, at this point, the braked wheel 3 does not influence moving up and down for loading platform ontology 9;
When the excessive velocities or other situations that loading platform ontology 9 declines cause safety tongs to start, slide plate 5 is by elasticity
The effect of part 6, it is mobile to the narrow end of guide groove 2, at this point, two braked wheels 3 are close to centre by the effect of guide groove 2, from
And the spacing between two braked wheels 3 is made to be less than the width of directive slide track 11, so that braked wheel 3 is held directive slide track 11 tightly, to prevent
Loading platform ontology 9 continues to fall downwards, improves the safety of loading platform.
Optimization, guide rod 4 and guide groove 2 are separately positioned on the opposite side of clamp block plate 1, it is provided with swing arm 7 on slide plate 5,
Swing arm 7 passes through clamp block plate 1 and connect with the braked wheel 3 in guide groove 2, and braked wheel 3 is enable to roll along the bevel edge of guide groove 2.
Specifically, swing arm 7 includes shaft 71 and swing part 72, there are two vertically arranged kidney slots for setting on clamp block plate 1;
Wherein,
One end of shaft 71 is connect with slide plate 5, rotates shaft 71 on slide plate 5 around center axis thereof, and is turned
The other end of axis 71 then passes through kidney slot and connect with swing part 72, and braked wheel 3 is rotatably arranged on swing part 72, makes slide plate 5
When mobile to the narrow end of guide groove 2 under the action of elastic component 6, two braked wheels 3 can be along the bevel edge of guide groove 2 to centre
It draws close, so that two braked wheels 3 be enable to hold directive slide track 11 tightly, plays the effect of braking.
Preferably, the central axis upright of shaft 71 is in the plane where swing arm 7.
Optimization, it is also set up on above-mentioned clamp block plate 1 there are two directive wheel 8, the spacing between two directive wheels 8 is fixed
, and when installing the safety tongs, two directive wheels 8 are separately positioned on the two sides of directive slide track 11, enable loading platform ontology 9
It is moved up and down along directive slide track 11.
Embodiment two:
The present invention also provides a kind of loading platforms, and as shown in Figures 1 to 5, which includes loading platform ontology 9 and speed limit dress
It sets, the first fixed pulley 10 for hanging and setting convenient for traction rope is provided in loading platform ontology 9, which further includes in embodiment one
The directive slide track 11 of safety tongs, loading platform ontology 9 is located between two braked wheels 3, is additionally provided with and pulls down on loading platform ontology 9
The pull rod 12 of dynamic first fixed pulley 10;
Speed-limiting device includes limiter of speed 13, speed limit rope 14 and reverse wheel 15, and speed limit rope 14 is looped around limiter of speed 13 and commutation
On wheel 15, it is provided with the second fixed pulley 16 on safety tongs, the trigger device for triggering safety tongs is provided on loading platform ontology 9
With activated lever 17, it is provided with the sliding block 19 of third fixed pulley 18 and horizontal sliding on trigger device, is set on activated lever 17
It is equipped with touch crank, the one end for touching crank is fixedly connected with speed limit rope 14, and the other end for touching crank, which supports, to be located on sliding block 19,
Drag-line 20 is provided on pull rod 12, the other end of drag-line 20 successively bypasses third fixed pulley 18, sliding block 19 and the second fixed pulley 16
It is connect with slide plate 5.
By a kind of loading platform of above structure, in the case that loading platform ontology 9 is in and works normally, drag-line 20 is the
It is in tight state under the pulling of three fixed pulleys 18, sliding block 19 and the second fixed pulley 16, makes position under the action of drag-line 20 of slide plate 5
In the wide end of guide groove 2, so that the braked wheel 3 on safety tongs be made not play braking action, therefore loading platform ontology 9 is not influenced
Lifting;
When the falling speed of loading platform ontology 9 is more than the setting speed of limiter of speed 13, limiter of speed 13 will start, and make to limit
Speed rope 14 stops operating, and loading platform ontology 9 then will continue to fall, at this point, the one end for touching crank then will receive speed limit rope 14
Effect rotated around activated lever 17, make to touch that crank supports the one end for setting sliding block 19 and sliding block 19 is detached from, sliding block 19 touching
When the active force of crank disappears, the power that sliding block 19 presses drag-line 20 also disappears therewith, so that drag-line 20 is loosened, and on safety tongs
Slide plate 5 after the active force for losing drag-line 20, it is mobile to the narrow end of guide groove 2 to be subject to the elastic force of elastic component 6, makes to brake
Wheel 3 can hold directive slide track 11 tightly, to prevent loading platform ontology 9 from continuing to fall;
Alternatively, first fixed pulley 10 loses traction rope when drawing fracture of rope or by deviating from the first fixed pulley 10
After power, the first fixed pulley 10 will be by 12 drag down of pull rod, at this point, the connecting pin of pull rod 12 and drag-line 20 will be to moving down
It is dynamic, so that drag-line 20 is in loosening state, the slide plate 5 on safety tongs is subject to elastic component 6 after the active force for losing drag-line 20
Elastic force it is mobile to the narrow end of guide groove 2, so that braked wheel 3 is held directive slide track 11 tightly, under preventing loading platform ontology 9 from continuing
It falls.
Wherein, chain or wirerope can be used in drag-line 20, to improve the intensity of drag-line 20, reduces safety tongs Yin Lasuo
20 fractures and the case where start.
Optimization, partition 21 is provided in loading platform ontology 9, the upper end of pull rod 12 passes through partition 21 and connect with fixed pulley,
And the lower end of pull rod 12 is provided with fixture block 22, is provided between the fixture block 22 and partition 21 and pulls spring 23;When traction wire saws
When first fixed pulley 10 moves up and down, spring 23 is pulled to be in compressive state, and drag-line 20 is made to be in tight state, to make to pacify
Full pincers do not influence moving up and down for loading platform ontology 9;
When drawing fracture of rope or by deviating from the first fixed pulley 10, it is upward that the first fixed pulley 10 just loses traction rope
The tractive force of the first fixed pulley 10 is dragged, pulls the active force of spring 23 to move down at this point, the first fixed pulley 10 will receive, makes
Drag-line 20 loosens, to start safety tongs, to prevent loading platform ontology 9 from continuing to fall.
Wherein, pulling spring 23 is helical spring, which is set on pull rod 12, and both ends are supported be located at respectively
On partition 21 and fixture block 22.
Optimization, the height of the second fixed pulley 16 is in the height of minimum point lower than slide plate 5;Drag-line 20 is set to be in tight shape
When state, drag-line 20 can pull downward on slide plate 5, to overcome the elastic force of elastic component 6, slide plate 5 be made to be in the wide end of guide groove 2,
When to make loading platform 9 normal operation of ontology, braked wheel 3 does not influence moving up and down for loading platform ontology 9.
Optimization, it is provided with torsional spring 24 on above-mentioned activated lever 17, one end of the torsional spring 24 and loading platform ontology 9 connect
It connects, the other end of torsional spring 24 is connect with activated lever 17;The elastic force of the torsional spring 24 is greater than between speed limit rope 14 and limiter of speed 13
Frictional force makes the loading platform ontology 9 during moving up and down, touch crank can drag speed limit rope 14 together on move down
It is dynamic, it is equal with the movement speed of loading platform ontology 9 to make the movement speed of the speed limit rope 14, to keep the limiter of speed 13 more preferable
The falling speed for detecting loading platform ontology 9, improve safety tongs starting accuracy.
Optimization, above-mentioned touch crank includes interconnecting piece 25 and fixes to the portion that sets 26, interconnecting piece 25 and to portion 26 is set
It is arranged on activated lever 17;Wherein, the one end of interconnecting piece 25 far from activated lever 17 is connected and fixed with speed limit rope 14, makes loading
During moving up and down, speed limit rope 14 is able to maintain consistent with the speed of loading platform platform;To the portion that sets 26 far from activated lever
17 one end then passes through sliding block 19 to drag-line 20 is set, so that drag-line 20 be made to keep tight state.
Optimization, it is additionally provided with tensioning wheel on above-mentioned limiter of speed 13, which can effectively adjust speed limit rope 14
Tensile force, to increase or reduce the frictional force between limiter of speed 13 and speed limit rope 14, to make speed limit rope 14, limiter of speed 13
Identical with the speed of loading platform ontology 9, limiter of speed 13 can accurately detect the falling speed of loading platform ontology 9, and
Shi Qidong safety tongs improves the safety of the loading platform.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of safety tongs, it is characterised in that: including clamp block plate (1), be provided with trapezoidal guide groove on the clamp block plate (1)
(2), two braked wheels (3) of the bevel edge rolling along the guide groove (2), the clamp block and in the guide groove (2) are provided with
The also vertical slide plate (5) for being provided with guide rod (4) and move up and down along the guide rod (4), the slide plate on plate (1)
(5) both ends are flexibly connected with two braked wheels (3) respectively, are additionally provided on the guide rod (4) by the slide plate (5)
The elastic component (6) pushed to the narrow end of the guide groove (2).
2. safety tongs according to claim 1, it is characterised in that: the guide rod (4) and the guide groove (2) are set respectively
It sets and is provided with swing arm (7) on the opposite side of the clamp block plate (1), the slide plate (5), the braked wheel (3) passes through the pendulum
Arm (7) is movably arranged on the slide plate (5), is additionally provided with the cunning moved up and down convenient for swing arm (7) on the clamp block plate (1)
Hole.
3. safety tongs according to claim 2, it is characterised in that: the swing arm (7) includes shaft (71) and swing part
(72), one end of the shaft (71) is rotatably arranged on the slide plate (5), and the other end of the shaft (71) passes through the cunning
Hole is connect with the swing part (72), and the braked wheel (3) is arranged on the swing arm (7).
4. safety tongs according to claim 3, it is characterised in that: for leading there are two being also set up on the clamp block plate (1)
To directive wheel (8).
5. a kind of loading platform, including loading platform ontology (9) and speed-limiting device, the loading platform ontology (9) is interior to be provided with convenient for leading
Messenger hangs the first fixed pulley (10) set, it is characterised in that: and it further include safety tongs as claimed in claim 4, the loading playscript with stage directions
The directive slide track (11) of body (9) is located between two braked wheels (3), is additionally provided with and pulls downward on the loading platform ontology (9)
The pull rod (12) of first fixed pulley (10);
The speed-limiting device includes limiter of speed (13), speed limit rope (13) and reverse wheel (15), and the speed limit rope (13) is looped around institute
It states on limiter of speed (13) and the reverse wheel (15), is provided on the safety tongs the second fixed pulley (16), the loading playscript with stage directions
It is provided with the trigger device and activated lever (17) for triggering safety tongs on body (9), is provided with third on the trigger device
Fixed pulley (18) and the sliding block (19) of horizontal sliding are provided with touch crank, the touchs song on the activated lever (17)
One end of handle is fixedly connected with the speed limit rope (13), and the other end for touching crank, which supports, to be located on the sliding block (19), institute
It states and is provided on pull rod (12) drag-line (20), the other end of the drag-line (20) successively bypasses the third fixed pulley (18), slides
Block (19) and the second fixed pulley (16) are connect with the slide plate (5).
6. loading platform according to claim 5, it is characterised in that: partition (21) are provided in the loading platform ontology (9),
The upper end of the pull rod (12) passes through the partition (21) and connect with the fixed pulley, and the lower end of the pull rod (12) is provided with card
Block (22) is provided between the fixture block (22) and the partition (21) and pulls spring (23), the drag-line (20) and the card
Block (22) connection.
7. loading platform according to claim 6, it is characterised in that: the height of second fixed pulley (16) is lower than the cunning
Plate (5) is in the height of minimum point.
8. loading platform according to claim 7, it is characterised in that: torsional spring (24) are provided on the activated lever (17),
One end of the torsional spring (24) is connect with the loading platform ontology (9), the other end of the torsional spring (24) and the touch
Lever (17) connection.
9. the loading platform according to any one of claim 5 to 8, it is characterised in that: the touch crank includes for connecting
Connect speed limit rope (13) interconnecting piece (25) and for support set the sliding block (19) support set portion (26), the interconnecting piece (25) and
Described support sets portion (26) and is fixedly connected with the activated lever (17).
10. loading platform according to claim 9, it is characterised in that: be additionally provided on the limiter of speed (13) for adjusting
The tensioning wheel of the rate of tension of speed limit line.
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CN201811607903.0A CN109592608B (en) | 2018-12-27 | 2018-12-27 | Cargo carrying platform |
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CN201811607903.0A CN109592608B (en) | 2018-12-27 | 2018-12-27 | Cargo carrying platform |
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CN109592608B CN109592608B (en) | 2023-09-26 |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN110615380A (en) * | 2019-10-11 | 2019-12-27 | 罗伯泰克自动化科技(苏州)有限公司 | Stacker objective table overspeed protection device |
CN112591651A (en) * | 2020-12-07 | 2021-04-02 | 苏州穗柯智能科技有限公司 | Stacker broken chain protection mechanism |
CN113819165A (en) * | 2021-10-29 | 2021-12-21 | 深圳中集天达物流***工程有限公司 | Brake mechanism and stacker |
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