CN109650247A - Hook range variable suspender - Google Patents
Hook range variable suspender Download PDFInfo
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- CN109650247A CN109650247A CN201811539922.4A CN201811539922A CN109650247A CN 109650247 A CN109650247 A CN 109650247A CN 201811539922 A CN201811539922 A CN 201811539922A CN 109650247 A CN109650247 A CN 109650247A
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- Prior art keywords
- crossbeam
- fork
- hook
- hangs
- range variable
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
- B66C1/28—Duplicate, e.g. pivoted, members engaging the loads from two sides
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
The invention discloses a kind of hook range variable suspenders, including fixed pulley blocks, outer crossbeam, crossbeam in crossbeam and second in first, first driving device and the second driving device, first transmission device and the second transmission device, first, which hangs fork and second, hangs fork, first plate hook and the second plate hook, fixed pulley blocks are separately installed at the both ends of outer crossbeam, crossbeam is mounted on the inside of outer crossbeam in crossbeam and second in first, first driving device and the first transmission device are mounted on outer crossbeam, crossbeam is relative to outer cross beam movement in driving first, second driving device and the second transmission device are mounted on outer crossbeam, crossbeam is relative to outer cross beam movement in driving second, first, which hangs fork, is connected in first crossbeam and with cross beam movement in first, second, which hangs fork, is connected in second crossbeam and with cross beam movement in second, first plate hook and the second plate hook are separately connected Fork and second, which is hung, in first hangs fork.
Description
Technical field
The present invention relates to lifting technical field of transportation more particularly to a kind of hook range variable suspenders.
Background technique
Crane is the mechanical equipment for carrying out the operations such as lifting, transport, handling or installation to material.Especially cast
Crane generally requires more cranes of configuration or configuration is different for the ladle, slag ladle and steel bucket etc. for lifting by crane different size
Plate hook.The problems such as investment is big, plate hook replacement is difficult is brought in this way.To solve the above-mentioned problems, it has been proposed that for example with
Under it is some can be with the hoisting device of hook range variable.
The Chinese patent of Patent No. 93108356.7 disclose a kind of regulating hook pitch of crane in foundry method and
Two curve pass sliding rails are respectively set at the both ends of hanger beam in its device, there is shifting axle in sliding rail, shifting axle and hang fork,
Suspension hook is linked together.It does not need to be reconfigured driving device, contacts to earth by plate hook and realizes hook range variable.But the technical solution of the patent
In, plate hook is easy to damage, and is limited by using area, and the operating process time is longer, and driver operation is also very inconvenient.
The Chinese patent of Patent No. 02207108.3 discloses a kind of electric hook range variable ladle spreader, by crossbeam, right
Title crossbeam center is respectively provided at the pass sliding rail at both ends, its interior shifting axle, hangs fork and plate hook composition.Electric pushrod is power source,
Slide plate is pushed to move in a straight line in sliding rail frame, two side chute of slide plate, pin shaft driving double-crank surround center axis rotation,
Crank handle turns connecting rod simultaneously drives the axis hinged with connecting rod to move in sliding-rail groove, to realize that hook away from variation, reaches the mesh of hook range variable
's.But in the technical solution of the patent, reliability is poor, is easy to appear dead point；Movement speed occurs always when plate hook hook range variable
Variation, causes to be driven not stable enough；Hook is small away from adjustable extent；Two plate hooks must move at the same time, and individually cannot individually move plate hook
It is dynamic.
Therefore it provides a kind of hook range variable suspender that can overcome the above disadvantage existing in the prior art, becomes this field
Technical staff's technical problem urgently to be solved.
Summary of the invention
To achieve the above object, the present invention provides a kind of hook range variable suspenders, comprising: fixed pulley blocks, outer crossbeam, first
Crossbeam, first driving device and the second driving device, the first transmission device and the second transmission device, first in interior crossbeam and second
It hangs fork and second and hangs fork, the first plate hook and the second plate hook, wherein be separately installed at the both ends of the outer crossbeam described fixed sliding
Wheel group, crossbeam is mounted on the inside of the outer crossbeam in crossbeam and described second in described first, the first driving device and
First transmission device is mounted on the outer crossbeam, and crossbeam is relative to the outer cross beam movement, institute in driving described first
It states the second driving device and second transmission device is mounted on the outer crossbeam, crossbeam is relative to institute in driving described second
State outer cross beam movement, described first, which hangs fork, is connected in described first crossbeam and with cross beam movement in described first, and described second
It hangs fork and is connected in described second crossbeam and with cross beam movement, first plate hook and second plate hook difference in described second
Described first is connected to hang fork and described second hang fork.
Further, in above-mentioned hook range variable suspender, first is provided on crossbeam in described first and hangs fork shaft hole and second
Hang fork shaft hole, described first hang fork by described first hang fork shaft hole or described second hang fork shaft hole be connected in described first it is horizontal
Beam on crossbeam is provided with third in described second and hangs fork shaft hole and the 4th and hangs fork shaft hole, and described second hangs fork by the third
It hangs fork shaft hole or the described 4th hangs fork shaft hole and be connected to crossbeam in described second.
Further, in above-mentioned hook range variable suspender, first transmission device and second transmission device are gear
Rack gear or lead screw.
Further, in above-mentioned hook range variable suspender, the first driving device and second driving device are mutually only
Vertical, first transmission device and second transmission device are mutually indepedent.
Further, in above-mentioned hook range variable suspender, positioning device is provided on the outer crossbeam, described in detection and feedback
Moving distance of the crossbeam relative to the outer crossbeam in crossbeam and described second in first.
Further, in above-mentioned hook range variable suspender, the both ends inside the outer crossbeam are provided with limiting device, to described
Crossbeam is limited relative to the movement of the outer crossbeam in crossbeam and described second in first.
Further, in above-mentioned hook range variable suspender, first is equipped between crossbeam and the outer crossbeam in described first
Anti-rolling device is equipped with the second anti-rolling device between crossbeam and the outer crossbeam in described second.
Further, in above-mentioned hook range variable suspender, correspond to below the crossbeam in described first inside the outer crossbeam
Position be provided with the first guiding and support device, crossbeam in described first is supported and guides crossbeam phase in described first
For the outer cross beam movement, the position for corresponding to below the crossbeam in described second inside the outer crossbeam is provided with second and leads
To and support device, crossbeam in described second is supported and crossbeam in described second is guided to move relative to the outer crossbeam
It is dynamic.
Further, in above-mentioned hook range variable suspender, described first hangs and is provided with first on fork and hangs fork protective device, described
Second hangs and is provided with second on fork and hangs fork protective device, is provided with outer protective device for cross beam on the outer crossbeam.
Hook range variable suspender of the invention has the advantage that two sets of drivings and transmission device respectively drive two plate hooks, than
A set of driving and transmission device drive two plate hook reliabilities higher simultaneously；The transmission of driving force is more steady, eliminates plate hook
Mobile dead point, realize hook away from stepless displacement；Common hook be can have away from away from two kinds of operating conditions, further expanding with super large hook
The use scope of crane；Two sets of drivings and transmission device are mutually indepedent, and thus two plate hooks can be acted individually, energy
It is enough to lift by crane asymmetric cargo；Real-time Feedback and accurate positioning by positioning device to the relative horizontal position of two plate hooks, energy
It is enough by the hook between two plate hooks away from being adjusted to be exactly matched in by the size of hoisting object；Hang fork protective device, the protection of outer crossbeam
Device, anti-rolling device, guiding and support device and limiting device etc. make the overall operation of suspender more safe and reliable.
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, in attached drawing:
Fig. 1 is the structural schematic diagram of hook range variable suspender of the invention, shows the common hook of hook range variable suspender away under operating condition
Specific structure；
Fig. 2 is the structural schematic diagram of hook range variable suspender of the invention, shows the super large hook of hook range variable suspender away under operating condition
Specific structure.
Appended drawing reference: 1, fixed pulley blocks；2, outer crossbeam；3-1, crossbeam in first；3-2, crossbeam in second；4-1, first
Driving device；4-2, the second driving device；5-1, the first transmission device；5-2, the second transmission device；6-1, first hang fork protection
Device；6-2, second hang fork protective device；The outer protective device for cross beam of 7-；8-1, first hang fork；8-2, second hang fork；9-1, first
Plate hook；9-2, the second plate hook；10-1, the first anti-rolling device；10-2, the second anti-rolling device；11-1, the first guiding and support dress
It sets；11-2, the second guiding and support device；12, limiting device；13, positioning device；14-1-1, first hang fork shaft hole；14-1-
2, second fork shaft hole is hung；14-2-1, third hang fork shaft hole；14-2-2, the 4th hang fork shaft hole.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the specific embodiment of the invention and
Technical solution of the present invention is clearly and completely described in corresponding attached drawing.Obviously, described embodiment is only of the invention
A part of the embodiment, instead of all the embodiments.Based on the embodiment of the present invention, those of ordinary skill in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.
Referring to Fig. 1 and Fig. 2, hook range variable suspender of the invention includes: fixed pulley blocks 1, crossbeam 3-1 in outer crossbeam 2, first
With second in crossbeam 3-2, first driving device 4-1 and the second driving device 4-2, the first transmission device 5-1 and second transmission dress
5-2 is set, first fork 8-1 and second is hung and hangs fork 8-2, the first plate hook 9-1 and the second plate hook 9-2, wherein at the both ends of outer crossbeam 2
Fixed pulley blocks 1 are separately installed with, crossbeam 3-2 is mounted on the inside of outer crossbeam 2 in crossbeam 3-1 and second in first, and first drives
Dynamic device 4-1 and the first transmission device 5-1 is mounted on outer crossbeam 2, and crossbeam 3-1 is mobile relative to outer crossbeam 2 in driving first,
Second driving device 4-2 and the second transmission device 5-2 are mounted on outer crossbeam 2, and crossbeam 3-2 is relative to outer crossbeam in driving second
2 is mobile, and first, which hangs fork 8-1, is connected in first crossbeam 3-1 and can be mobile with crossbeam 3-1 in first, and second, which hangs fork 8-2, is connected to
Crossbeam 3-2 and can be mobile with crossbeam 3-2 in second in second, the first plate hook 9-1 and the second plate hook 9-2 are connected to first and hang
Fork 8-1 and second hangs fork 8-2.
Crossbeam 3-2 is relative to the inclination in outer 2 moving process of crossbeam in crossbeam 3-1 and second to prevent in first, preferably
Ground is equipped with the first anti-rolling device 10-1 and the crossbeam 3-2 and outer in second in first between crossbeam 3-1 and outer crossbeam 2
Second anti-rolling device 10-2 is installed between crossbeam 2.First anti-rolling device 10-1 and the second anti-rolling device 10-2 can also be prevented
In first when lifting cargo in crossbeam 3-1 and second crossbeam 3-2 inclination.
To ensure smooth movement of the crossbeam 3-2 relative to outer crossbeam 2 in crossbeam 3-1 and second in first, in outer crossbeam 2
The position corresponded in first below crossbeam 3-1 in portion is provided with the first guiding and support device 11-1 and in outer crossbeam 2
The position corresponded in second below crossbeam 3-2 in portion is provided with the second guiding and support device 11-2.First guiding and support
The guiding of device 11-1 and second and support device 11-2 are respectively supported simultaneously crossbeam 3-2 in crossbeam 3-1 and second in first
Guide it mobile relative to outer crossbeam 2.
Preferably, the both ends inside outer crossbeam 2 are additionally provided with limiting device 12, prevent crossbeam 3-1 and second in first
Interior crossbeam 3-2 thereby guarantees that the first plate hook 9-1 and the second plate hook 9-2 in safety relative to the mobile outer crossbeam 2 of abjection of outer crossbeam 2
Operation in range.The form such as can be switched using mechanical stop limiter, electronic journey of limiting device 12.
Preferably, it is provided with positioning device 13 on outer crossbeam 2, for detecting and feeding back crossbeam 3-1 and second in first
Moving distance of the interior crossbeam 3-2 relative to outer crossbeam 2, and thus, it is possible to the opposite water to the first plate hook 9-1 and the second plate hook 9-2
Prosposition, which is set, to be accurately positioned, and finally realizes that the hook of suspender is controlled away from variation.Positioning device 13 for example can using encoder,
The forms such as position sensor.
As a kind of specific embodiment, there are two fork shaft hole is hung, i.e., first hangs fork shaft hole for setting on crossbeam 3-1 in first
14-1-1 and second hangs fork shaft hole 14-1-2, and there are two fork shaft hole is hung, i.e. third hangs fork shaft hole for setting on crossbeam 3-2 in second
14-2-1 and the 4th hangs fork shaft hole 14-2-2.First, which hangs fork 8-1, can hang fork shaft hole 14-1-1 or second by first and hang fork shaft
Hole 14-1-2 is connected to crossbeam 3-1 in first, and second, which hangs fork 8-2, can hang fork shaft hole 14-2-1 or the 4th by third and hang fork shaft
Hole 14-2-2 is connected to crossbeam 3-2 in second.As shown in Figure 1, first hangs fork 8-1 and hangs fork shaft hole 14-1-2 by second and be connected to
Crossbeam 3-1 in first, second hangs fork 8-21 hangs fork shaft hole 14-2-2 and is connected to crossbeam 3-2 in second by the 4th, this situation is
The common hook of hook range variable suspender of the invention is away from operating condition.As shown in Fig. 2, first hangs fork 8-1 and hangs fork shaft hole 14-1-1 by first
It is connected to crossbeam 3-1 in first, second, which hangs fork 8-21, hangs fork shaft hole 14-2-1 by third and is connected to crossbeam 3-2 in second, this
Situation is the super large hook of hook range variable suspender of the invention away from operating condition, hook away from range than common hook away from the hook under operating condition away from range more
Greatly.Through the above structure, the use scope for the crane for having used hook range variable suspender of the invention can be made to greatly expand.
Moreover it is preferred that in order to during lift cargo to first hang fork 8-1 and second hang fork 8-2 and outer crossbeam 2 into
Row protection, prevent because heat radiation to first hang fork 8-1, second hang fork 8-2 and outer crossbeam 2 damage, first hang fork 8-1 on set
It is equipped with first and hangs fork protective device 6-1, second hangs and be provided with second on fork 8-2 and hang fork protective device 6-2, is arranged on outer crossbeam 2
There is outer protective device for cross beam 7.
As a kind of specific embodiment, first driving device 4-1 and the second driving device 4- for example can using motor,
The forms such as hydraulic cylinder, the first transmission device 5-1 and the second transmission device 5-2 for example can be using forms such as rack-and-pinion, lead screws.
In addition, first driving device 4-1 and the first transmission device 5-1 crossbeam 3-1 mobile relative to outer crossbeam 2 in driving first and drive
The second crossbeam 3-2 mobile relative to outer crossbeam 2 driving device 4-2 and the second transmission device 5-2 are mutually indepedent in dynamic second.
The real work situation of hook range variable suspender of the invention are as follows: in the case where common hook is away from operating condition, first hangs fork 8-1 by the
Two, which hang fork shaft hole 14-1-2, is connected to crossbeam 3-1 in first, and second, which hangs fork 8-21, hangs fork shaft hole 14-2-2 by the 4th and be connected to
Crossbeam 3-2 in second, first driving device 4-1 and the first transmission device 5-1 driving first in crossbeam 3-1 relative to outer crossbeam 2
It is mobile, it thus drives first to hang fork 8-1 and the first plate hook 9-1 is mobile in turn, the second driving device 4-2 and the second transmission device 5-
Crossbeam 3-2 is mobile relative to outer crossbeam 2 in 2 drivings second, thus drives second to hang fork 8-2 simultaneously and then the second plate hook 9-2 is mobile,
The hook between the first plate hook 9-1 and the second plate hook 9-2 is adjusted away to realize common hook thus according to by the size of hoisting object
Away from stepless displacement；In the case where super large hook is away from operating condition, first hang fork 8-1 by first hang fork shaft hole 14-1-1 be connected in first it is horizontal
Beam 3-1, second, which hangs fork 8-21, hangs fork shaft hole 14-2-1 by third and is connected to crossbeam 3-2 in second, first driving device 4-1 with
Crossbeam 3-1 is mobile relative to outer crossbeam 2 in first transmission device 5-1 driving first, thus drives first to hang fork 8-1 and and then the
Crossbeam 3-2 is relative to outer crossbeam 2 in one plate hook 9-1 movement, the second driving device 4-2 and the second transmission device 5-2 driving second
It is mobile, thus drive second hang fork 8-2 and and then the second plate hook 9-2 it is mobile, thus according to being adjusted the by the size of hoisting object
Hook between one plate hook 9-1 and the second plate hook 9-2 away from, thus realize super large hook away from stepless displacement.
In conclusion compared with prior art, hook range variable suspender of the invention has the advantage that
1, two sets of drivings and transmission device respectively drive two plate hooks, i.e. first driving device 4-1 and the first transmission device
5-1 drives the first plate hook 9-1 and the second driving device 4-2 and the second transmission device 5-2 to drive the second plate hook 9-2, than a set of
Driving and transmission device drive two plate hook reliabilities higher simultaneously；
2, especially in the case where transmission device uses rack-and-pinion or lead screw form, the transmission of driving force is more steady,
Eliminate the mobile dead point of the first plate hook 9-1 and the second plate hook 9-2, realize hook away from stepless displacement, be no longer limited to hook away from only
For certain several discrete fixed value, so that the use scope of suspender is widened significantly；
3, hook range variable suspender of the invention can have common hook away from, away from two kinds of operating conditions, can further expanding with super large hook
The use scope of crane；
4, the first driving device 4-1 and the first transmission device 5-1 and the second plate hook 9- of driving of the first plate hook 9-1 are driven
Both 2 second driving device 4-2 and the second transmission device 5-2 are mutually indepedent, thus the first plate hook 9-1 and the second plate hook 9-2
It can individually act, this to lift by crane asymmetric cargo more convenient；
5, the setting of positioning device 13 can carry out the relative horizontal position of the first plate hook 9-1 and the second plate hook 9-2 real-time
Feed back and be accurately positioned, thus, it is possible to by the hook between the first plate hook 9-1 and the second plate hook 9-2 away from be adjusted to be exactly matched in by
The size of hoisting object, so that lifting job is simpler reliable；
6, first hang fork protective device 6-1 and second hang fork protective device 6-2, outer protective device for cross beam 7, the first anti-roll dress
Set 10-1 and the second anti-rolling device 10-2, first guiding and support device 11-1 and second guiding and support device 11-2 and
The setting of limiting device 12 etc., so that hook range variable suspender overall operation of the invention is more safe and reliable.
It should be noted that, in this document, the relational terms of such as " first " and " second " or the like are used merely to one
A entity or operation with another entity or operate distinguish, without necessarily requiring or implying these entities or operation it
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant are intended to
Cover non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or setting
Standby intrinsic element.In addition, placement shape of "front", "rear", "left", "right", "upper", the "lower" herein to be indicated in attached drawing
State is reference.
Finally, it should be noted that the above examples are only used to illustrate the technical scheme of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (9)
1. a kind of hook range variable suspender characterized by comprising fixed pulley blocks, outer crossbeam, horizontal in crossbeam and second in first
Beam, first driving device and the second driving device, the first transmission device and the second transmission device, first hang fork and second hang fork,
First plate hook and the second plate hook, wherein the fixed pulley blocks are separately installed at the both ends of the outer crossbeam, in described first
Crossbeam is mounted on the inside of the outer crossbeam, the first driving device and first transmission device in crossbeam and described second
Be mounted on the outer crossbeam, in driving described first crossbeam relative to the outer cross beam movement, second driving device and
Second transmission device is mounted on the outer crossbeam, and crossbeam is relative to the outer cross beam movement, institute in driving described second
It states first and hangs fork and be connected in described first crossbeam and with cross beam movement in described first, described second, which hangs fork, is connected to described
Crossbeam and with cross beam movement in described second in two, first plate hook and second plate hook are connected to described first and hang
Fork and described second hangs fork.
2. hook range variable suspender according to claim 1, which is characterized in that be provided with first in described first on crossbeam and hang fork
Axis hole and second hangs fork shaft hole, and described first, which hangs fork, hangs fork shaft hole by described first or described second hang fork shaft hole and be connected to institute
Crossbeam in first is stated, third is provided in described second on crossbeam and hangs fork shaft hole and the 4th and hang fork shaft hole, described second to hang fork logical
The third is crossed to hang fork shaft hole or the described 4th hang fork shaft hole and be connected to crossbeam in described second.
3. hook range variable suspender according to claim 1, which is characterized in that first transmission device and second transmission
Device is rack-and-pinion or lead screw.
4. hook range variable suspender according to claim 1, which is characterized in that the first driving device and second driving
Device is mutually indepedent, and first transmission device and second transmission device are mutually indepedent.
5. hook range variable suspender according to claim 1, which is characterized in that be provided with positioning device on the outer crossbeam, examine
Survey and feed back in described first moving distance of the crossbeam relative to the outer crossbeam in crossbeam and described second.
6. hook range variable suspender according to claim 1, which is characterized in that the both ends inside the outer crossbeam are provided with limit
Device limits crossbeam in crossbeam and described second in described first relative to the movement of the outer crossbeam.
7. hook range variable suspender according to claim 1, which is characterized in that in described first between crossbeam and the outer crossbeam
First anti-rolling device is installed, the second anti-rolling device is installed between crossbeam and the outer crossbeam in described second.
8. hook range variable suspender according to claim 1, which is characterized in that correspond to described first inside the outer crossbeam
The position of interior below the crossbeam is provided with the first guiding and support device, is supported to crossbeam in described first and guides described
Relative to the outer cross beam movement, the position for corresponding to below the crossbeam in described second inside the outer crossbeam is set crossbeam in one
It is equipped with the second guiding and support device, crossbeam in described second is supported and guides in described second crossbeam relative to described
Outer cross beam movement.
9. hook range variable suspender according to claim 1, which is characterized in that described first hangs and be provided with first on fork to hang fork anti-
Protection unit, described second hangs and is provided with second on fork and hangs fork protective device, is provided with outer protective device for cross beam on the outer crossbeam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811539922.4A CN109650247A (en) | 2018-12-17 | 2018-12-17 | Hook range variable suspender |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811539922.4A CN109650247A (en) | 2018-12-17 | 2018-12-17 | Hook range variable suspender |
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| Publication Number | Publication Date |
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| CN109650247A true CN109650247A (en) | 2019-04-19 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811539922.4A Pending CN109650247A (en) | 2018-12-17 | 2018-12-17 | Hook range variable suspender |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111847219A (en) * | 2020-07-28 | 2020-10-30 | 宣城知明灯机械设计有限公司 | Anti-drop scrap steel plate lifting device for steel rolling mechanical equipment |
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| CN207061630U (en) * | 2017-08-15 | 2018-03-02 | 山起重型机械股份公司 | It is a kind of can hook range variable gantry hook |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111847219A (en) * | 2020-07-28 | 2020-10-30 | 宣城知明灯机械设计有限公司 | Anti-drop scrap steel plate lifting device for steel rolling mechanical equipment |
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Application publication date: 20190419 |
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