CN106744434A - Overload crane protection device - Google Patents
Overload crane protection device Download PDFInfo
- Publication number
- CN106744434A CN106744434A CN201611030652.5A CN201611030652A CN106744434A CN 106744434 A CN106744434 A CN 106744434A CN 201611030652 A CN201611030652 A CN 201611030652A CN 106744434 A CN106744434 A CN 106744434A
- Authority
- CN
- China
- Prior art keywords
- valve
- winch
- check valve
- control
- hydraulic control
- 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.)
- Pending
Links
Classifications
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control And Safety Of Cranes (AREA)
Abstract
The invention discloses a kind of overload crane protection device, it is related to crane manufacturing technology field；Including winch gear, the winch gear controls valve block to control by winch, the winch control valve block is connected with repairing check valve by fluid pressure line, and the repairing check valve Opposite direction connection hydraulic control one-way valve, the hydraulic control one-way valve is connected on main line by pipeline；It is connected with main oil pump, check valve on the main line in turn, the hydraulic control pipeline of the hydraulic control one-way valve is connected on main line；The hydraulic control pipeline is serially connected with magnetic valve.The present invention can solve the problems, such as that overload crane causes loop wheel machine to be drawn and collapses.
Description
Technical field
It is especially a kind of to be used for overload crane protection device the present invention relates to crane manufacturing technology field.
Background technology
Steel wire rope is not set to detach the hydraulic control device used by winch on current hydraulic wireline winch, crane is using process
In be likely to the snarly situations of mobile object such as suspension hook, steel wire rope and tender, if twined in this case
Knot thing cannot be untied, and crane works on the overload that just occur, whole crane structure has the wind collapsed by mobile object drawing
Danger, so as to cause the heavy losses and the accident to personal security significant impact of property.
The content of the invention
It is an object of the invention to provide a kind of overload crane protection device, it can solve overload crane causes loop wheel machine
The problem collapsed by drawing.
In order to solve the above problems, the technical solution adopted by the present invention is：Including winch gear, the winch gear passes through
Winch control valve block control, the winch control valve block is connected with repairing check valve, the repairing check valve by fluid pressure line
Opposite direction connection hydraulic control one-way valve, the hydraulic control one-way valve is connected on main line by pipeline；It is sequentially connected on the main line
The hydraulic control pipeline for having main oil pump, check valve, the hydraulic control one-way valve is connected on main line；The hydraulic control pipeline is serially connected with electromagnetism
Valve.
In above technical scheme, further scheme can be：The check valve output end of the main line is connected with point
Pipeline, the branch pipeline has been sequentially connected in series accumulator control valve block and accumulator.
Further：Hydraulic motor, the input of the hydraulic motor and the winch control are provided with the winch gear
Valve block connection processed, the cable drum of its output end connection winch device.
Further：The magnetic valve is two position, three-way electromagnetic change valve, and the oil return opening of each of the magnetic valve is equal
Second check valve is provided with, the oil-out of second check valve is connected with the oil return opening of the magnetic valve.
Further：The input of the check valve is connected with the output end of the oil pump, output end and the storage of check valve
Can device control valve block connection.
By adopting the above-described technical solution, the present invention has the advantages that compared with prior art：
1st, the manual overload protecting system of crane of the present invention by oil pump, check valve, accumulator, accumulator control valve block, one by
The hydraulic control one-way valve of two-position three way magnetic valve control, repairing check valve winch control valve block are constituted, and in crane rope or are hung
When hook is wound by mobile object, winch is set to keep an identical tension to export automatically, it is ensured that steel wire rope smoothly departs from from winch, from
And protect the safety of crane；
2nd, the control button of the two position, three-way electromagnetic change valve in manual overload protecting system of the invention is arranged on crane driving
Interior, facilitates crane driver to control.
Brief description of the drawings
Fig. 1 is hydraulic schematic diagram of the present invention.
Specific embodiment
The present invention is further described with reference to the accompanying drawings and examples：
This overload crane protection device, as shown in figure 1, including winch gear 9, winch gear 9 controls valve block 8 by winch
Hydraulic motor 10 is provided with control, winch gear 9, the input of hydraulic motor 10 is connected with winch control valve block 8, its output end
The cable drum of connection winch device 9；Winch control valve block 8 is connected with repairing check valve 7 by fluid pressure line, and repairing is unidirectional
Valve 7 Opposite direction connection, one hydraulic control one-way valve 6, the output end of repairing check valve 7 is connected with winch control valve block 8；Hydraulic control one-way valve 6
It is connected on main line by pipeline；Main line is connected with oil pump 1, check valve 2, accumulator control valve block 3 in turn from bottom to up
With accumulator 4, the wherein input of check valve 2 connected with the output end of oil pump 1, and output end and the accumulator of check valve 2 are controlled
Valve block 3 is connected；The pipeline of hydraulic control one-way valve 6 is connected on the pipeline between accumulator control valve block 3 and check valve 2；Hydraulic control list
It is connected on the pipeline of the check valve 2 of main line and accumulator control valve block 3 to the hydraulic control pipeline of valve 6, hydraulic control pipeline is serially connected with
Magnetic valve 5；Magnetic valve 5 is two position, three-way electromagnetic change valve, the oil return opening of each of magnetic valve 5 be equipped with one it is second unidirectional
Valve 11, the oil-out of the second check valve 11 is connected with the oil return opening of magnetic valve 5.
Oil pump 1 can be by single pump as oil filling pump, it is also possible to which from working connection bypass, oil circuit is out oil-filled all the way；Accumulation of energy
Device control valve block 3 can set the pressure size of accumulator 4, and accumulator control valve block 3 is provided with pressure sensor, works as pressure above
When reaching setting value, stop oil pump 1 and work, so more energy-conserving and environment-protective；The control button of magnetic valve 5 is arranged on crane driving
Interior, by crane, driver controls, and is arranged on the position that crane driver can be controlled quickly, convenient to be run into crane
Can quickly be made a response under dangerous situation；Inside winch control valve block 8, the repairing of accumulator 4 and the port for drawdown phase of hydraulic motor 10
Even, it is pulled in winch gear 9 by steel wire rope, when needing hydraulic motor 10 reversion occur, there is provided the hydraulic oil of hydraulic motor 10, is made
Hydraulic motor 10 can be inverted rapidly, crane hook is departed from twine, so as to protect the safety of crane.
Integrated identical tension function in winch control valve block 8, in the artificial activation manual overload protecting system of crane of the present invention
Afterwards, winch gear 9 can continue one tension force that can be set of holding, and the tension force can make the steel wire rope on winch be in one
Individual just tensioned state, it is allowed to which steel wire rope is pulled out from niggerhead and loop wheel machine.
The manual overload protecting system of crane of the present invention increases accumulator 4, can be carried for the system under any circumstance
For power, so the system can under any circumstance protect the safety of crane.
Claims (5)
1. a kind of overload crane protection device, including winch gear, the winch gear controls valve block to control by winch, its
It is characterised by：The winch control valve block is connected with repairing check valve, the repairing check valve Opposite direction connection by fluid pressure line
Hydraulic control one-way valve, the hydraulic control one-way valve is connected on main line by pipeline；Be connected with turn on the main line main oil pump,
Check valve, the hydraulic control pipeline of the hydraulic control one-way valve is connected on main line；The hydraulic control pipeline is serially connected with magnetic valve.
2. overload crane protection device according to claim 1, it is characterised in that：The check valve of the main line
Output end is connected with branch pipeline, and the branch pipeline has been sequentially connected in series accumulator control valve block and accumulator.
3. overload crane protection device according to claim 1 and 2, it is characterised in that：It is provided with the winch gear
Hydraulic motor, the input of the hydraulic motor is connected with winch control valve block, the steel of its output end connection winch device
Cord reel.
4. overload crane protection device according to claim 1, it is characterised in that：The magnetic valve is two-position three way electricity
Magnetic reversal valve, the oil return opening of each of the magnetic valve is equipped with second check valve, second check valve it is fuel-displaced
Mouth is connected with the oil return opening of the magnetic valve.
5. overload crane protection device according to claim 4, it is characterised in that：The input of the check valve and institute
The output end connection of oil pump is stated, the output end of check valve is connected with accumulator control valve block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611030652.5A CN106744434A (en) | 2016-11-22 | 2016-11-22 | Overload crane protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611030652.5A CN106744434A (en) | 2016-11-22 | 2016-11-22 | Overload crane protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106744434A true CN106744434A (en) | 2017-05-31 |
Family
ID=58971634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611030652.5A Pending CN106744434A (en) | 2016-11-22 | 2016-11-22 | Overload crane protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106744434A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110713129A (en) * | 2019-09-10 | 2020-01-21 | 广州文冲船厂有限责任公司 | Constant tension control system of hydraulic winch |
| CN112340630A (en) * | 2020-11-18 | 2021-02-09 | 中船华南船舶机械有限公司 | Emergency hydraulic system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2240080B (en) * | 1990-01-12 | 1994-05-11 | Liebherr Werk Nenzing | Crane, preferably offshore crane |
| JPH11263594A (en) * | 1998-03-18 | 1999-09-28 | Tadano Ltd | Winch operating device for crane |
| CN201325844Y (en) * | 2008-12-06 | 2009-10-14 | 徐州工程机械科技股份有限公司 | Hoisting wire cable compression hydraulic control loop |
| CN101734571A (en) * | 2010-01-06 | 2010-06-16 | 中化岩土工程股份有限公司 | Speed control method for free falling winch and method for implementing method |
| SI23104A (en) * | 2009-07-10 | 2011-01-31 | Uniforest D.O.O. | Hydraulic aggregate of forest winch with hydraulic motor added |
| CN103613027A (en) * | 2013-11-22 | 2014-03-05 | 无锡市海联舰船附件有限公司 | Towing-winch hydraulic control circuit for emergent cable pay-off |
-
2016
- 2016-11-22 CN CN201611030652.5A patent/CN106744434A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2240080B (en) * | 1990-01-12 | 1994-05-11 | Liebherr Werk Nenzing | Crane, preferably offshore crane |
| JPH11263594A (en) * | 1998-03-18 | 1999-09-28 | Tadano Ltd | Winch operating device for crane |
| CN201325844Y (en) * | 2008-12-06 | 2009-10-14 | 徐州工程机械科技股份有限公司 | Hoisting wire cable compression hydraulic control loop |
| SI23104A (en) * | 2009-07-10 | 2011-01-31 | Uniforest D.O.O. | Hydraulic aggregate of forest winch with hydraulic motor added |
| CN101734571A (en) * | 2010-01-06 | 2010-06-16 | 中化岩土工程股份有限公司 | Speed control method for free falling winch and method for implementing method |
| CN103613027A (en) * | 2013-11-22 | 2014-03-05 | 无锡市海联舰船附件有限公司 | Towing-winch hydraulic control circuit for emergent cable pay-off |
Non-Patent Citations (2)
| Title |
|---|
| 张利平: "《液压气动系统设计手册》", 30 September 1997, 机械工业出版社 * |
| 邢鸿雁，张磊: "《实用液压技术300题》", 31 December 2006, 机械工业出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110713129A (en) * | 2019-09-10 | 2020-01-21 | 广州文冲船厂有限责任公司 | Constant tension control system of hydraulic winch |
| CN112340630A (en) * | 2020-11-18 | 2021-02-09 | 中船华南船舶机械有限公司 | Emergency hydraulic system |
| CN112340630B (en) * | 2020-11-18 | 2021-12-17 | 中船华南船舶机械有限公司 | Emergency hydraulic system |
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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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170531 |
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| RJ01 | Rejection of invention patent application after publication |