CN107986164B - A kind of wirerope overload protection arrangement - Google Patents
A kind of wirerope overload protection arrangement Download PDFInfo
- Publication number
- CN107986164B CN107986164B CN201710891581.6A CN201710891581A CN107986164B CN 107986164 B CN107986164 B CN 107986164B CN 201710891581 A CN201710891581 A CN 201710891581A CN 107986164 B CN107986164 B CN 107986164B
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- CN
- China
- Prior art keywords
- block
- connecting rod
- braced frame
- bullet
- wirerope
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C15/00—Safety gear
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/54—Safety gear
- B66D1/58—Safety gear responsive to excess of load
Abstract
The present invention provides a kind of wirerope overload protection arrangement, after effective solution slings weight, weight is easy the danger fallen；Its technical solution solved includes braced frame, clamping device is equipped in braced frame, fixture block is symmetrically arranged, fixture block includes arc block, and arc block periphery is connected with level board, and the lower section of level board is equipped with first connecting rod and the first pin shaft, first connecting rod is sleeved on the first pin shaft through sliding slot, it is equipped with baffle on the outside of first connecting rod, brute spring is connected between first connecting rod and baffle, is equipped with limited step in braced frame；Clamping device is arranged right below lifting unit；Card slot is offered on level board opposing end surface, bullet block is equipped between two level boards, the medial surface of each bullet block is arc surface, and two bullet blocks can be moved up and down and can be sticked into card slot, the same cam is connected on the outside of two bullet blocks, the rotation of cam can drive two bullet blocks to move up and down；Present inventive concept is ingenious, and use is safe.
Description
Technical field
The present invention relates to lifting technical field, especially a kind of wirerope overload protection arrangements.
Background technique
For crane during lifting, the thickness of wirerope is most important, has been directly related to hanging object and operator
Safety, during crane loading, lifted by crane in most of situation all be by crane below suspension hook hook winding
The wirerope of weight is lifted by crane.
Since in specific works, there are many wirerope thickness specification in each workshop, in lifting, most of operators
It is all that wirerope is selected according to the weight rough estimate of weight, which results in inaccurate, weight may be sometimes estimated in lifting
When object is overweight, when the weight of weight is greater than the crane capacity of wirerope, at this time when using the lifting of this wirerope, it is easy to occur
Weight is in the operational process of high-altitude, wire cable rupture, the danger that weight falls.
Therefore the weight of weight can be judged automatically according to the bearing capacity of wirerope by designing one kind, and it is automatic to overload
The suspender to fall off is necessary.
Summary of the invention
For above situation, for the defect for overcoming the prior art, the present invention provides a kind of wirerope overload protection arrangement,
Well realize when weight it is overweight be more than wirerope bearing capacity when, suspender can be such that weight is detached from automatically, avoid weight
After slinging, danger that weight falls.
A kind of wirerope overload protection arrangement, the technical solution solved includes braced frame, and braced frame lower end is equipped with
Bottom plate, braced frame upper end are equipped with cover board, and braced frame internal upper part is equipped with the clamping device being placed in below cover board, and clamping device is set
In the center of braced frame left and right directions, the fixture block that clamping device can be moved left and right by two is constituted, two fixture blocks or so
It is arranged symmetrically, each fixture block includes a semicircular arc block, and two semicircular inner headed faces of arc block are opposite, each arc
For the connection of block periphery there are two upper and lower horizontally disposed level board, the lower section of level board is equipped with the first connecting rod and solid of can swinging
To determine the first pin shaft on the support frame, offers sliding slot on first connecting rod, first connecting rod is sleeved on the first pin shaft through sliding slot,
A baffle that can be moved left and right is equipped on the outside of each first connecting rod, barrier slides are mounted in braced frame, first connecting rod
Horizontal positioned brute spring is connected between lower end and baffle, the first pin shaft is at a distance from the upper end of first connecting rod less than first
The upper end of the distance between pin shaft and brute spring, first connecting rod is hinged on level board, and moving left and right for level board will drive
The lower end of first connecting rod swings, and is equipped with the limited step that baffle can be stopped to move inward in braced frame, first connecting rod to
Interior swing can tense baffle wedge at limited step by brute spring；
The anterior-posterior horizontal that is arranged right below of the clamping device is placed and the second pin shaft moving up and down, in each baffle
Side is fitted with one and is placed in the sliding block that on bottom plate and can be horizontally slipped, and two sliding blocks are symmetrically arranged, brute spring and sliding block
Center be in same level, second connecting rod is hinged on the inside of each sliding block, two second connecting rod other ends are hinged on
On the second pin shaft of same root, the second connecting rod of two sliding blocks in left and right and its respective side collectively forms a lifting unit, on bottom plate
The lateral through slot being placed in below second connecting rod is offered, sliding block is located at the top of lateral through slot, and the width of sliding block is greater than laterally logical
The width of slot, lateral through slot both ends are respectively equipped with the sliding block that sliding block can be made to fall and fall mouth；
Multiple card slots are offered on two level board opposing end surfaces respectively, are set between two level boards there are two setting
In the bullet block in braced frame, two bullet blocks are arranged symmetrically about the central plane of upper and lower two level boards, each bullet block it is interior
Side is arc surface, and two bullet blocks can be moved up and down and can be sticked into card slot, is connected to the same cam on the outside of two bullet blocks,
The rotation of cam can drive two bullet blocks to move up and down.
Present inventive concept is ingenious, realize well when weight is overweight be more than wirerope bearing capacity when, suspender can be automatic
It is detached from weight, is avoided after slinging weight, the danger that weight falls.
Detailed description of the invention
Fig. 1 is main view of the present invention.
Fig. 2 is top view of the present invention.
Fig. 3 is lifting unit of the present invention and baffle top cross-sectional view.
Fig. 4 is A direction view in Fig. 2 of the present invention.
Fig. 5 is 11 stereoscopic schematic diagram of baffle of the present invention.
Fig. 6 is clamping device stereoscopic schematic diagram of the present invention.
Fig. 7 is first connecting rod junction of the present invention partial enlarged view.
Fig. 8 is cam side view of the present invention.
Fig. 9 is partial enlarged view I in Fig. 1 of the present invention.
Specific embodiment
Below in conjunction with attached drawing, specific embodiments of the present invention will be described in further detail.
By Fig. 1-9 it is found that the present invention includes braced frame 1,1 lower end of braced frame is equipped with bottom plate 2,1 upper end of braced frame
Equipped with cover board 3,1 internal upper part of braced frame is equipped with the clamping device for being placed in 3 lower section of cover board, and it is left that clamping device is placed in braced frame 1
The center of right direction, clamping device are made of two fixture blocks that can be moved left and right 4, and two fixture blocks 4 are symmetrically arranged, often
A fixture block 4 includes a semicircular arc block 5, and two semicircular inner headed faces of arc block 5 are opposite, each 5 outer circle of arc block
There are two upper and lower horizontally disposed level board 7, the lower section of level board 7 is equipped with the first connecting rod 9 and fixed of can swinging for face connection
The first pin shaft in braced frame 1 offers sliding slot 6 on first connecting rod 9, and first connecting rod 9 is sleeved on the first pin shaft through sliding slot 6
On, a baffle 11 that can be moved left and right is equipped on the outside of each first connecting rod 9, baffle 11 is slidably mounted in braced frame 1, the
Horizontal positioned brute spring 10, the upper end of the first pin shaft and first connecting rod 9 are connected between the lower end and baffle 11 of one connecting rod 9
Distance less than the distance between the first pin shaft and brute spring 10, the upper end of first connecting rod 9 is hinged on level board 7, horizontal
The lower end that the moving left and right of plate 7 will drive first connecting rod 9 swings, and being equipped in braced frame 1 can stop baffle 11 inwardly to move
Dynamic limited step 12, first connecting rod 9, which is inwardly swung, to be stuck at limited step 12 by the tension baffle 11 of brute spring 10；
The clamping device is arranged right below anterior-posterior horizontal placement and the second pin shaft 15 moving up and down, each baffle
11 insides are fitted with one and are placed in the sliding block 13 that on bottom plate 2 and can be horizontally slipped, and two sliding blocks 13 are symmetrically arranged, strength bullet
The center of spring 10 and sliding block 13 is in same level, and the inside of each sliding block 13 is hinged with second connecting rod 14, and two second
14 other end of connecting rod is hinged on the second pin shaft of same root 15, and the second connecting rod 14 of the sliding block 13 of left and right two and its respective side is common
A lifting unit is constituted, the lateral through slot 16 for being placed in 14 lower section of second connecting rod is offered on bottom plate 2, sliding block 13 is located at laterally logical
The top of slot, the width of sliding block 13 are greater than the width of lateral through slot 16, and lateral 16 both ends of through slot are respectively equipped with and sliding block can be made to fall
Sliding block fall mouth 17；
Multiple card slots 31 are offered on two 7 opposing end surfaces of level board respectively, are equipped with two between two level boards 7
A bullet block 18 being placed in braced frame 1, two bullet blocks 18 are arranged symmetrically about the central plane of upper and lower two level boards 7, often
The medial surface of a bullet block 18 is arc surface, and two bullet blocks 18 can move up and down and can stick into card slot 31, two bullet blocks 18 it is outer
Side is connected to the same cam 32, and the rotation of cam 32 can drive two bullet blocks 18 to move up and down.
The wedge block 19 that can be horizontally slipped is equipped at left and right sides of 3 upper surface of cover board, two wedge blocks 19 are opposite
It is on one side inclined-plane, the opposite inclined-plane of two wedge blocks 19 constitutes the wedge-like opening 20 that outer openings are greater than inside opening, wedge shape
Opening 20 is placed in the rear side of clamping device, is connected with first between the end face opposite with inclined-plane of wedge block 19 and braced frame 1
Spring 22.
The level board 7 passes through the guide plate 21 being fixed in braced frame 1, and the lateral ends of two level boards are placed in
The outside of guide plate 21, is connected with second spring 29 between the outer circle and guide plate 21 of arc block 5, guide plate 21 is equipped with and is placed in
Installation groove between two level boards 7, bullet block 18 are mounted in installation groove, are connected between bullet block 18 and the bottom of installation groove
It is connected to the 4th spring 8, bullet block 18 is connected to cam 32 through strut 33.
The lifting unit has two groups about 1 front-rear direction center symmetric setting of frame before and after lower portion, support
Vertical groove 23 is offered on the front and rear wall of frame 1 respectively, the second pin shaft 15 is mounted in vertical groove 23 and can be vertical recessed
It is moved up and down in slot 23, the rear and front end of the second pin shaft 15 is placed in the outside of braced frame, and bottom plate 2 is equipped with and is placed in the second pin
Longitudinal through slot 24 immediately below axis 15, sliding block 13 is fallen from sliding block can make the second pin shaft 15 decline from longitudinal through slot 24 when mouth 17 is fallen
Under, back-moving spring 25, the lower section of second connecting rod 14 are connected between two corresponding second connecting rods 14 on each lifting unit
Suspender equipped with suspension weight.
The front and rear sides of the upper and lower ends of the baffle 11 are respectively arranged with protrusion 26, be equipped with inside braced frame 1 with
Raised 26 corresponding tracks, protrusion 26 clamp in orbit, and baffle 11 can be moved inside and outside track by the protrusion 26 of two sides.
The front and rear wall center of the braced frame 1 is equipped with support plate 27, and support plate 27 is placed in clamping device and lifting
Between unit, support plate 27 is equipped with fixed ring 28, and it is vertical that the center of fixed ring 28 and the center of clamping device are in same
On straight line.
Third spring 30 is connected separately between two sidewalls above and below first pin shaft and sliding slot.
For the present invention when specifically used, the initial position of baffle 11 is at limited step 12, two arcs of pressing device at this time
Tightening force is not present in the distance between shape block 5 minimum at this time on brute spring 10, in former long status；When needing hoisting heavy
When, weight is fixed on first on the suspender of 14 lower section of second connecting rod, after the completion of fixed, the wirerope of selection is passed through into cover board 3
The wedge-like opening 20 of top is put into clamping device from the rear side of braced frame 1, and the lower end of wirerope is fixed on clamping dress
In the fixed ring 28 for setting lower section, at this time by the outer circle of two opposite 5 clamping wirerope of arc block on fixture block 4, due to lifting
The wirerope of use is the specification of standard, and the thickness of wirerope all has certain specification, at this time the card slot 31 on level board 7
Position be configured according to the diameter of the different size of wirerope, when wire line shoe is into clamping device, fixture block 4 can outward
It is mobile, and then level board 7 is driven to move outward, the inner arc face of bullet block 18 can be passed through when level board 7 moves outward
Bullet block 18 is compressed, bullet block 18 can stick into card slot 31 corresponding with wirerope thickness, and bullet block 18 can limit after sticking into card slot 31
The movement of fabrication block inwardly, the influence for avoiding the swing of wirerope from generating.
Moving outward for fixture block 4 will drive the hinged first connecting rod 9 in lower end and be swung simultaneously, at this time wirerope diameter
Variation after the swing of first connecting rod 9, since the lower end of first connecting rod 9 is connected with brute spring 10, brute spring 10
The other end is connected on baffle 11, since the initial position of baffle 11 is at limited step 12, the variation of wirerope diameter at this time
After first connecting rod 9, the smaller variation of wirerope diameter can be amplified by the swing of 9 lower end of first connecting rod,
And it is converted into the power that furthers that brute spring 10 tenses baffle 11.
When hoisting heavy, since weight is suspended on the lower section of second connecting rod 14, when crane slowly lifts by crane, at this time by
In being affected by gravity, the second pin shaft 15 can generate the trend moved downward under gravity, the second pin shaft 15 to
Lower movement can drive the sliding block 13 of two sides to move outward simultaneously by second connecting rod 14, during lifting, the second pin shaft 15
On it is increasing by downward gravity, the sliding block 13 that second connecting rod 14 will push two sides at this time is moved outward and is held out against at it
The baffle 11 in outside, when the weight of weight is smaller, sliding block 13 can not open the baffle 11 tensed by brute spring 10 at this time, this
When lifting unit will not generate movement, can determine that selected wirerope can bear the weight of wanted hoisting heavy at this time,
Weight height is hung at this time to transport.
When the weight of lifting is overweight, more than selected wirerope in the hoisting weight within safety coefficient, at this time
The sliding block 13 of two sides can open the baffle 11 of its respective side simultaneously, and sliding block 13 slides in and out, since baffle 11 is open, sliding block 13
Movement outward can make sliding block 13 move to sliding block to fall in mouth 17, and sliding block 13 can fall in mouth 17 from sliding block and fall at this time, simultaneously
Hinged second connecting rod 14 and the second pin shaft 15 can be fallen respectively by lateral through slot 16 and vertical through slot therewith, be said at this time
The weight of bright hoisting heavy be more than wirerope bearing capacity, weight can not hang supporting surface at this time, need replacing wirerope into
Row lifting.
Due to being connected with back-moving spring 25 between corresponding two connecting rods, back-moving spring 25 is played in not hoisting heavy
Effect by from two second connecting rods 14 to contract, prevents when not working, and under lifting unit Gravitative Loads, sliding block 13 is opened
Baffle 11 and fall, the pulling force of back-moving spring 25 can be ignored relative to the weight for playing hanging object.
When needing to remove wirerope, only need to rotate cam 32 at this time, make between two bullet blocks 18 of the same side away from
From shortening, and then two bullet blocks 18 is made to be detached from card slot 31, at this time after wirerope takes out, fixture block 4 can be in the work of second spring 29
Reset condition is returned back under.
For the present invention by devising the mutual cooperation of clamping device and lifting unit, realizing can be according to wirerope
Diameter is determined to the maximum weight of hoisting heavy, when the preponderance of the weight of lifting, the lifting unit of the suspender from
Hold in face of ground can Automatic-falling, prevent when weight is lifted to high aerial, the unbearable weight of wirerope and be broken and cause weight
Object is fallen, and is caused danger, and safety during lifting is realized.
The present invention realizes the use of the wirerope of different size by devising fixture block 4, card slot 31 and bullet block 18,
It, at this time can be to fixture block 4 inwardly when bullet block 18 sticks into card slot 31 since wirerope is easy to produce swing in use
Movement limited, play the fixed effect to fixture block position, while every side is respectively set that there are two symmetrical bullets up and down
Block can more smoothly be defined the position of fixture block.
The structure that the present invention is hinged on the second pin shaft of same root 15 by devising second connecting rod 14, realizes second
When hanging weight on connecting rod 14, it can realize that the sliding block 13 of two sides moves at the same time well, while ensure that entire lifting unit
Athletic performance, the lifting made is more steady, and two sides sliding block 13 simultaneously operation can preferably realize wirerope diameter to
The conversion of bearing capacity.
Present inventive concept is ingenious, realize well when weight is overweight be more than wirerope bearing capacity when, suspender can be automatic
It is detached from weight, is avoided after slinging weight, the danger that weight falls.
Claims (7)
1. a kind of wirerope overload protection arrangement, which is characterized in that including braced frame（1）, braced frame（1）Lower end is equipped with bottom
Plate（2）, braced frame（1）Upper end is equipped with cover board（3）, braced frame（1）Internal upper part is equipped with and is placed in cover board（3）The clamping of lower section fills
It sets, clamping device is placed in braced frame（1）The center of left and right directions, the fixture block that clamping device can be moved left and right by two
（4）It constitutes, two fixture blocks（4）It is symmetrically arranged, each fixture block（4）Including a semicircular arc block（5）, two arcs
Block（5）Semicircular inner headed face is opposite, each arc block（5）There are two upper and lower horizontally disposed level boards for periphery connection（7）,
Each fixture block（4）Level board positioned at lower part（7）Lower end be connected separately with the first connecting rod that can swing（9）, each
Fixture block（4）Be respectively arranged below with one and be fixed on braced frame（1）On the first pin shaft, first connecting rod（9）On offer cunning
Slot（6）, first connecting rod（9）Through sliding slot（6）It is sleeved on the first pin shaft, each first connecting rod（9）Outside is equipped with one and can control
Mobile baffle（11）, baffle（11）It is slidably mounted on braced frame（1）It is interior, first connecting rod（9）Lower end and baffle（11）Between
It is connected with horizontal positioned brute spring（10）, the first pin shaft and first connecting rod（9）Upper end distance less than the first pin shaft with
Brute spring（10）The distance between, first connecting rod（9）Upper end is hinged on level board（7）On, level board（7）Move left and right meeting
Drive first connecting rod（9）Lower end swings, braced frame（1）Interior be equipped with can stop baffle（11）The limited step moved inward
（12）, first connecting rod（9）Brute spring can be passed through by inwardly swinging（10）Tense baffle（11）It is stuck in limited step（12）Place；
The clamping device is arranged right below anterior-posterior horizontal placement and the second pin shaft moving up and down（15）, each baffle
（11）Inside is fitted with one and is placed in bottom plate（2）Sliding block that is upper and can horizontally slipping（13）, two sliding blocks（13）Bilateral symmetry cloth
It sets, brute spring（10）With sliding block（13）Center be in same level, each sliding block（13）Inside is hinged with the second company
Bar（14）, two second connecting rods（14）The other end is hinged on the second pin shaft of same root（15）On, two sliding blocks in left and right（13）And its
The second connecting rod of respective side（14）Collectively form a lifting unit, bottom plate（2）On offer and be placed in second connecting rod（14）Lower section
Lateral through slot（16）, sliding block（13）Positioned at the top of lateral through slot, sliding block（13）Width be greater than lateral through slot（16）Width
Degree, lateral through slot（16）Both ends are respectively equipped with the sliding block that sliding block can be made to fall and fall mouth（17）；
Two level boards（7）Multiple card slots are offered on opposing end surface respectively（31）, two level boards（7）Between be equipped with
Two are placed in braced frame（1）On bullet block（18）, two bullet blocks（18）About upper and lower two level boards（7）Central plane pair
Claim arrangement, each bullet block（18）Medial surface be arc surface, two bullet blocks（18）It can move up and down and card slot can be sticked into（31）It is interior,
Two bullet blocks（18）Outside be connected to the same cam（32）, cam（32）Rotation can drive two bullet blocks（18）On move down
It is dynamic.
2. a kind of wirerope overload protection arrangement according to claim 1, which is characterized in that the cover board（3）Upper end
The wedge block that can be horizontally slipped is equipped at left and right sides of face（19）, two wedge blocks（19）Opposite is inclined-plane, two wedges on one side
Shape block（19）Opposite inclined-plane constitutes the wedge-like opening that outer openings are greater than inside opening（20）, wedge-like opening（20）It is placed in clamping
The rear side of device, wedge block（19）An end face opposite with inclined-plane and braced frame（1）Between be connected with the first spring（22）.
3. a kind of wirerope overload protection arrangement according to claim 1, which is characterized in that the level board（7）It wears
It crosses and is fixed on braced frame（1）Interior guide plate（21）, the lateral ends of two level boards are placed in guide plate（21）Outside, arc
Shape block（5）Outer circle and guide plate（21）Between be connected with second spring（29）, guide plate（21）It is equipped with and is placed in two levels
Plate（7）Between installation groove, bullet block（18）It is mounted in installation groove, bullet block（18）It is connected between the bottom of installation groove
There is the 4th spring（8）, bullet block（18）Cam is connected to through strut 33（32）.
4. a kind of wirerope overload protection arrangement according to claim 1, which is characterized in that the lifting unit is in frame
Front and back has two groups about 1 front-rear direction center symmetric setting of frame inside frame, braced frame（1）Front and rear wall on offer respectively
Vertical groove（23）, the second pin shaft（15）It is mounted on vertical groove（23）It is interior and can be in vertical groove（23）Inside move up and down, the
Two pin shafts（15）Rear and front end be placed in the outside of braced frame, bottom plate（2）It is equipped with and is placed in the second pin shaft（15）Underface
Longitudinal through slot（24）, sliding block（13）Mouth is fallen from sliding block（17）It can make the second pin shaft when falling（15）From longitudinal through slot（24）Decline
Under, two corresponding second connecting rods on each lifting unit（14）Between be connected with back-moving spring（25）, second connecting rod（14）
Lower section be equipped with suspension weight suspender.
5. a kind of wirerope overload protection arrangement according to claim 1, which is characterized in that the baffle（11）It is upper
The front and rear sides at lower both ends are respectively arranged with protrusion（26）, braced frame（1）Inside is equipped with and protrusion（26）Corresponding track,
Protrusion（26）It clamps in orbit, baffle（11）The protrusion of two sides can be passed through（26）It is moved inside and outside track.
6. a kind of wirerope overload protection arrangement according to claim 1, which is characterized in that the braced frame（1）
Front and rear wall center support plate is installed（27）, support plate（27）It is placed between clamping device and lifting unit, support plate（27）
It is equipped with fixed ring（28）, fixed ring（28）Center and the center of clamping device be in same vertical straight line.
7. a kind of wirerope overload protection arrangement according to claim 1, which is characterized in that first pin shaft and cunning
Third spring is connected separately between two sidewalls above and below slot（30）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710891581.6A CN107986164B (en) | 2017-09-27 | 2017-09-27 | A kind of wirerope overload protection arrangement |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710891581.6A CN107986164B (en) | 2017-09-27 | 2017-09-27 | A kind of wirerope overload protection arrangement |
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| Publication Number | Publication Date |
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| CN107986164A CN107986164A (en) | 2018-05-04 |
| CN107986164B true CN107986164B (en) | 2018-11-23 |
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| CN201710891581.6A Active CN107986164B (en) | 2017-09-27 | 2017-09-27 | A kind of wirerope overload protection arrangement |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108679089B (en) * | 2018-05-29 | 2020-04-21 | 杭州佳语节能科技有限公司 | New energy automobile wheel hub bearing |
| CN109205448A (en) * | 2018-10-18 | 2019-01-15 | 太原科技大学 | A kind of multi link heavy duty lock rope device |
| CN109973605B (en) * | 2019-04-11 | 2020-10-30 | 北京航空航天大学 | Mechanical tension overload protection device |
| CN113443574A (en) * | 2021-05-20 | 2021-09-28 | 刘根田 | Locking device of hoisting equipment |
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| JP2001139280A (en) * | 1999-11-16 | 2001-05-22 | Sumitomo Constr Mach Co Ltd | Overload preventing device for construction machine |
| CN201473214U (en) * | 2009-05-27 | 2010-05-19 | 敖贵华 | Lifting weight limiter |
| CN201553554U (en) * | 2009-11-13 | 2010-08-18 | 天津起重设备有限公司 | Overload protecting device of electric hoist type crane |
| CN103991769A (en) * | 2014-05-28 | 2014-08-20 | 六安市鸿兴精密机械有限公司 | Falling prevention device |
| CN204434234U (en) * | 2015-01-27 | 2015-07-01 | 罗泰罗格自动化科技（苏州）有限公司 | A kind of overload rope-loosing protection device |
| CN204938806U (en) * | 2015-08-31 | 2016-01-06 | 中冶建工集团有限公司 | Preventing lifting hook from falling device |
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2017
- 2017-09-27 CN CN201710891581.6A patent/CN107986164B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001139280A (en) * | 1999-11-16 | 2001-05-22 | Sumitomo Constr Mach Co Ltd | Overload preventing device for construction machine |
| CN201473214U (en) * | 2009-05-27 | 2010-05-19 | 敖贵华 | Lifting weight limiter |
| CN201553554U (en) * | 2009-11-13 | 2010-08-18 | 天津起重设备有限公司 | Overload protecting device of electric hoist type crane |
| CN103991769A (en) * | 2014-05-28 | 2014-08-20 | 六安市鸿兴精密机械有限公司 | Falling prevention device |
| CN204434234U (en) * | 2015-01-27 | 2015-07-01 | 罗泰罗格自动化科技（苏州）有限公司 | A kind of overload rope-loosing protection device |
| CN204938806U (en) * | 2015-08-31 | 2016-01-06 | 中冶建工集团有限公司 | Preventing lifting hook from falling device |
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| Publication number | Publication date |
|---|---|
| CN107986164A (en) | 2018-05-04 |
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