CN108502754B - A kind of anti-risk ejection device of tower crane lifting process - Google Patents
A kind of anti-risk ejection device of tower crane lifting process Download PDFInfo
- Publication number
- CN108502754B CN108502754B CN201810307029.2A CN201810307029A CN108502754B CN 108502754 B CN108502754 B CN 108502754B CN 201810307029 A CN201810307029 A CN 201810307029A CN 108502754 B CN108502754 B CN 108502754B
- Authority
- CN
- China
- Prior art keywords
- support plate
- mandrel
- rope sheave
- limit switch
- idler wheel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/88—Safety gear
- B66C23/90—Devices for indicating or limiting lifting moment
- B66C23/905—Devices for indicating or limiting lifting moment electrical
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
- B66C13/50—Applications of limit circuits or of limit-switch arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Jib Cranes (AREA)
Abstract
The invention discloses a kind of anti-risk ejection devices of tower crane lifting process, including mandrel and stock crossbeam, the mandrel two sides are respectively equipped with rope sheave and support plate, idler wheel is equipped on the left of the mandrel, the idler wheel and mandrel passes through screw and connect with rope sheave and support plate, rope pressing plate is equipped on the outside of the rope sheave, wirerope is equipped between the rope sheave and idler wheel, the steel cord ends are connected with hook, coiled springs are equipped with inside the rope sheave, described mandrel one end is connect by shaft coupling with limit switch, limit switch bracket is equipped with below the limit switch, the limit switch bracket is fixed by connector A with support plate, the support plate is fixed by connector B with crust of the device, U-shaped card is equipped with below the crust of the device.The apparatus structure is simple, it is possible to prevente effectively from collapse accident of derrick crane during jacking, guarantees the safety of construction personnel.
Description
Technical field
The present invention relates to building hoists to protect equipment equipment technical field, more specifically, being related to a kind of tower lifting
Machine jacks the anti-risk ejection device of process.
Background technique
The tower body of derrick crane, be one section standard knot of a section be fastened by bolts it is assembled get up, use insufficient height
When, realize that tower crane increases height by increasing standard knot, increasing height is to jack up a section standard knot in stock with hydraulic cylinder
Height space distance slings a section standard knot with tower crane auxiliary hook and is transported to the space just jacked, docks with previous section standard knot,
Primary increase is completed in fastening；If continuing to increase, step is identical, and demounting procedure is also identical.Due to no anti-risk ejection device, peace
Fill worker's reflection not in time, hydraulic cylinder continues to push up, and stock guide wheel is emerged standard knot, causes collapse accident.Derrick crane falls
It collapses accident, is all during jacking mostly, stock guide wheel is emerged caused by standard knot.
Summary of the invention
The object of the present invention is to provide a kind of anti-risk ejection devices of tower crane lifting process, and the apparatus structure is simple,
It is possible to prevente effectively from collapse accident of derrick crane during jacking, guarantees the safety of construction personnel.
To achieve the goals above, The technical solution adopted by the invention is as follows:
A kind of anti-risk ejection device of tower crane lifting process, including mandrel and stock crossbeam, the mandrel two sides point
Not She You rope sheave and support plate, be equipped with idler wheel on the left of the mandrel, the idler wheel and mandrel pass through screw and rope sheave and
Support plate connection, the rope sheave outside are equipped with rope pressing plate, wirerope, the steel wire are equipped between the rope sheave and idler wheel
Rope end is connected with hook, is equipped with coiled springs inside the rope sheave, described mandrel one end is opened by shaft coupling and limit
Connection connects, and limit switch bracket is equipped with below the limit switch, and the limit switch bracket passes through connector A and support
Plate is fixed, and the support plate is fixed by connector B with crust of the device, and U-shaped card is equipped with below the crust of the device, described
Stock below the crossbeam be equipped with hydraulic cylinder.
Further, gland is equipped on the outside of the mandrel and support plate contact position.
Further, rope card is equipped at the wirerope and crust of the device contact position.
Further, the connector A includes plain washer, spring washer and bolt.
Further, the connector B includes plain cushion, spring shim and nut.
Further, washer is equipped between the idler wheel and support plate.
The working principle of the present apparatus is anti-risk ejection device to be stuck on stock with U-shaped card, when increasing with hand handle wirerope
It extracts and, hook hooks the upper end of standard knot, with the rope sticker lower end of anti-risk ejection device, sticks wirerope, adjustment is above
Travel switch, hear a sound of click, then fasten travel switch, establish hydraulic cylinder and shrink minimum stroke position；Rope of dismantling blocks,
Dragged outward with hand handle wirerope again, with tape measure wirerope pull out distance, distance be a section standard knot apart from when, then with restrict
Wirerope is stuck, following travel switch is adjusted, hears a sound of click, then fastens travel switch, hydraulic cylinder is established and shrinks
Maximum travel position, rope card of dismantling, slowly looses one's grip, and coiled springs haul wirerope, after wirerope is exceptionally straight, returns to hydraulic cylinder contraction
Minimum stroke position.Start motor, jacked, jack to standard knot apart from when, trigger travel switch, automatically cut off
Power supply, jacking stop, it is ensured that jacking the safety of process, then increase, repeat the above steps, removal step is identical.
Compared with the prior art, beneficial effects of the present invention are as follows:
Using anti-risk ejection device of the invention is installed, can emerge caused by standard knot to avoid stock guide wheel during jacking
Derrick crane collapse accident improves the safety of operation, safeguard work personnel's personal safety.
Detailed description of the invention
Fig. 1 is overall structure main view of the present invention；
Fig. 2 is revolved sectional view at overall structure C of the present invention；
In figure: 1, rope sheave；2, rope pressing plate；3, crust of the device；4, idler wheel；5, washer；6, support plate；7, gland；8, mandrel；
9, shaft coupling；10, limit switch bracket；11, limit switch；12, connector B；13, connector A；14, stock crossbeam；15, it rolls up
Bent spring；16, wirerope；17, rope card；18, U-shaped card；19, it links up with；20, hydraulic cylinder.
Specific embodiment
In order to which the technical means, creative features, achievable purpose and effectiveness for realizing invention are easy to understand, below with reference to
It is specifically illustrating, the present invention is further explained.
As depicted in figs. 1 and 2, a kind of anti-risk ejection device of tower crane lifting process, including mandrel 8 and stock crossbeam
14,8 two sides of mandrel are respectively equipped with rope sheave 1 and support plate 6, are equipped with idler wheel 4 on the left of mandrel 8, idler wheel 4 and mandrel 8 pass through screw
It is connect with rope sheave 1 and support plate 6, rope pressing plate 2 is equipped on the outside of rope sheave 1, wirerope 16, wirerope are equipped between rope sheave 1 and idler wheel 4
16 ends are connected with hook 19, and coiled springs 15 are equipped with inside rope sheave 1, and 8 one end of mandrel is connected by shaft coupling 9 and limit switch 11
It connects, limit switch bracket 10 is equipped with below limit switch 11, limit switch bracket 10 is solid by connector A 13 and support plate 6
Fixed, support plate 6 is fixed by connector B 12 and crust of the device 3, is equipped with U-shaped card 18 below crust of the device 3, under stock crossbeam 14
Side is equipped with hydraulic cylinder 20, and gland 7 is equipped on the outside of mandrel 8 and 6 contact position of support plate, and wirerope 16 and crust of the device 3 contact position
It sets place and is equipped with rope card 17, connector A 13 includes plain washer, spring washer and bolt, and connector B 12 includes plain cushion, spring pad
Piece and nut are equipped with washer 5 between idler wheel 4 and support plate 6.
Basic principles and main features and advantages of the present invention of the invention have been shown and described above.The skill of the industry
Art personnel it should be appreciated that the present invention is not limited to the above embodiments, the above embodiments and description only describe
The principle of the present invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these
Changes and improvements all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and
Its equivalent thereof.
Claims (1)
1. a kind of anti-risk ejection device of tower crane lifting process, it is characterised in that: including mandrel and stock crossbeam, the core
Axis two sides are respectively equipped with rope sheave and support plate, are equipped with idler wheel on the left of the mandrel, the idler wheel and mandrel pass through screw
It is connect with rope sheave and support plate, rope pressing plate is equipped on the outside of the rope sheave, wirerope, institute are equipped between the rope sheave and idler wheel
The steel cord ends stated are connected with hook, are equipped with coiled springs inside the rope sheave, described mandrel one end passes through shaft coupling
It is connect with limit switch, limit switch bracket is equipped with below the limit switch, the limit switch bracket passes through connection
Part A is fixed with support plate, and the support plate is fixed by connector B with crust of the device, and U is equipped with below the crust of the device
Type card, the stock below the crossbeam are equipped with hydraulic cylinder, and gland is equipped on the outside of the mandrel and support plate contact position, described
Wirerope and crust of the device contact position at be equipped with rope card, the connector A includes plain washer, spring washer and bolt,
The connector B includes plain cushion, spring shim and nut, and washer is equipped between the idler wheel and support plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810307029.2A CN108502754B (en) | 2018-04-08 | 2018-04-08 | A kind of anti-risk ejection device of tower crane lifting process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810307029.2A CN108502754B (en) | 2018-04-08 | 2018-04-08 | A kind of anti-risk ejection device of tower crane lifting process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108502754A CN108502754A (en) | 2018-09-07 |
| CN108502754B true CN108502754B (en) | 2019-09-10 |
Family
ID=63381112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810307029.2A Expired - Fee Related CN108502754B (en) | 2018-04-08 | 2018-04-08 | A kind of anti-risk ejection device of tower crane lifting process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108502754B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB936227A (en) * | 1959-11-16 | 1963-09-04 | Ace Machinery Ltd | Improvements in or relating to lifts |
| CN101219760A (en) * | 2008-02-04 | 2008-07-16 | 北京星光影视设备科技股份有限公司 | Roof failure preventing position limiter |
| CN201825680U (en) * | 2010-09-27 | 2011-05-11 | 中国葛洲坝集团机械船舶有限公司 | Inner wall rope-pressing type steel wire rope reel |
| CN202139006U (en) * | 2011-05-18 | 2012-02-08 | 江苏雄宇重工科技股份有限公司 | Hoister for overhead working platform |
| CN202449751U (en) * | 2011-11-16 | 2012-09-26 | 宁波新大昌织造有限公司 | Crane limit device |
-
2018
- 2018-04-08 CN CN201810307029.2A patent/CN108502754B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN108502754A (en) | 2018-09-07 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190910 Termination date: 20210408 |
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| CF01 | Termination of patent right due to non-payment of annual fee |