CN202226580U - Jacking protection device of self-jacking tower crane - Google Patents
Jacking protection device of self-jacking tower crane Download PDFInfo
- Publication number
- CN202226580U CN202226580U CN2011202507489U CN201120250748U CN202226580U CN 202226580 U CN202226580 U CN 202226580U CN 2011202507489 U CN2011202507489 U CN 2011202507489U CN 201120250748 U CN201120250748 U CN 201120250748U CN 202226580 U CN202226580 U CN 202226580U
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- jacking
- pawl
- monitoring device
- erection support
- crossbeam
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Abstract
The utility model relates to a jacking protection device of a self-jacking tower crane, which comprises climbing claw monitoring devices, jacking cross beam monitoring devices and a control alarm device, wherein two sets of climbing claw monitoring devices are respectively arranged on each climbing claw and a sleeve rack corresponding to the climbing claw; two sets of jacking cross beam monitoring devices are respectively arranged at two ends of a jacking cross beam; the climbing claw monitoring devices and the jacking cross beam monitoring devices are connected with the control alarm device; and the control alarm device is connected with a jacking oil cylinder. The jacking protection device of the self-jacking tower crane is capable of guaranteeing the jacking process to be safe and reliable.
Description
Technical field
The utility model relates to a kind of tower crane lifting process safe fender guard, and is especially a kind of from jacking tower crane lifting fender guard.
Background technology
Jacking process from the jacking tower crane is: remove tower machine upper (arm, equilibrium arm, cat head, pivoting support, stock etc.) up and down and standard knot bonded assembly high strength bolt (or bearing pin); The jacking crossbeam is snapped within standard knot marks time; After jacking cylinder stretches out a movement travel; Stock is climbed pawl snap within standard knot marks time, shrink jacking cylinder, accomplish a jacking stroke.After first jacking stroke is accomplished with the jacking crossbeam put into once more standard knot another within marking time, carry out jacking second time stroke, and standard knot introduced, accomplish a supernumerary segment (the number of times difference of different tower machine jacking strokes, but principle is the same) of standard knot.Multiple jacking operation can make the tower machine be elevated to operating altitude, thereby satisfies building site lift heavy, transport operation requirement.In tower machine jacking operation, tower machine upper was removed with being connected of standard knot, and its weight is then climbed pawl by jacking cylinder crossbeam or stock and born, thereby supported the top of whole tower machine.The relative jacking cylinder crossbeam of tower machine upper or climb two lateral balances that pawl keeps equilibrium arm and arm guarantees that the stock relative standard saves the even of gap, four limits, thereby guarantees the squareness of tower machine upper.In whole jacking process, the weight of tower machine upper or be to bear by the jacking crossbeam, or bear by climbing pawl; Jacking crossbeam or climb whether putting in place of pawl card thus, whether stock exists deflection, is the most critical work of jacking operation; Also be the whether most important link of safety of jacking operation, and in existing tower machine, jacking operation jacking crossbeam, climb pawl and whether snap into the position; Whether tower machine upper exists inclination; Lean on workman's eyes to observe fully, the fender guard that has no is so be easy to occur accident at the tower machine in the jacking process.The frequent in recent years tower machine collapse accident that takes place also explained this point, in the accident that collapses, caused many people dead, and the overwhelming majority occurs in the tower machine in the jacking process, because of the jacking crossbeam or climb pawl and do not snap into the position and collapse and lead to tragedy.
The utility model content
The utility model technical matters to be solved be overcome deficiency of the prior art and provide a kind of can guarantee the jacking process safe and reliable from jacking tower crane lifting fender guard.
The technical scheme that the utility model solves the problems of the technologies described above employing is: should be from jacking tower crane lifting fender guard; It is characterized in that: comprise and climb pawl monitoring device, jacking crossbeam monitoring device and control warning device; The described pawl monitoring device of climbing has two covers; Be separately positioned on each and climb pawl and climb on the cooresponding stock of pawl with this, described jacking crossbeam monitoring device has two covers, is separately positioned on the two ends of jacking crossbeam.Climb the pawl monitoring device and all be connected with the control warning device with jacking crossbeam monitoring device, the control warning device is connected with jacking cylinder.
The utility model described one the cover climb comprise in the pawl monitoring device first erection support, first near switch, second erection support, second near switch and sensor block; Second erection support is welded on climbs pawl one end; Second is fixed on second erection support near switch; Climb the pawl other end and be fixed with sensor block, first erection support is welded on the stock, and first is fixed on first erection support near switch; First is corresponding with the sensor block position near the position of switch, and second near the gap between inductive switching and the standard knot.Accurately snap in standard knot and mark time when climbing pawl; And when bearing tower machine upper weight, second near producing induction between switch and the standard knot main chord, and the gap between pawl and the standard knot main chord is climbed in inspection; And first near producing induction between switch and the sensor block, and whether confirm to climb pawl stressed.
The described cover jacking crossbeam monitoring device of the utility model comprises that jacking is near switch, jacking erection support and jacking sensor block; The jacking sensor block is welded on the main chord of each upside of marking time of column crane mast section; The jacking erection support is welded on the upper surface of jacking crossbeam one end; Jacking is fixed on the jacking erection support near switch, and jacking is corresponding with jacking sensor block position near switch.When the jacking crossbeam accurately snaps in when marking time, jacking forms induction near switch and jacking sensor block, confirms the position of jacking crossbeam.
The described control warning device of the utility model comprises the Hydraulic Station control system; Programmable Logic Controller, intermediate relay and combined aural and visual alarm; 3-position 4-way control cock in the Hydraulic Station control system adopts solenoid control; Combined aural and visual alarm is arranged in the Hydraulic Station operating system; Intermediate relay is connected with three position four-way electromagnetic valve coil, Programmable Logic Controller output point and Hydraulic Station operating handle respectively, and all of climbing in pawl monitoring device and the jacking crossbeam monitoring device are connected with the Programmable Logic Controller entrance point near switch, and the Programmable Logic Controller output point is controlled three intermediate relays respectively.
The utility model compared with prior art has the following advantages: the described pawl monitoring device of climbing of the utility model divides two parts, and the one, measure and climb the gap between pawl and the standard knot, thereby guarantee to climb pawl in the plane of marking time; The 2nd, whether pawl is climbed in measurement stressed.Above-mentioned first function is accomplished near switch by second erection support and second, through adjusting second near switch, confirms that second climbs the distance between pawl and the standard knot near inductive switching, thereby can judge and climb pawl whether in can snapping in the plane of marking time.Above-mentioned second portion function (also can adopt LOAD CELLS by first erection support, first near switch; The demonstration and the judgement of the stressed size of pawl climbed in realization), sensor block accomplishes; When climbing pawl when being put; Climb pawl upset and make sensor block make its action near switch, thereby whether confirm to climb pawl stressed near first.When above-mentioned two parts monitoring is all passed through, explain that climbing pawl has snapped into the position.The described jacking crossbeam of the utility model monitoring device is marked time when middle when the jacking crossbeam snaps in, and the adjustment jacking is near switch, make jacking near inductive switching to the jacking sensor block, thereby confirming whether the jacking crossbeam has snapped in marks time.No matter climb that arbitrary link does not put in place in pawl monitoring device or the jacking crossbeam monitoring device; The capital stops the action of jacking cylinder through the Hydraulic Station control system; Excite the combined aural and visual alarm in the control warning device simultaneously, send continuous sound and light alarm, remind operating personal.The utility model remedies the blank that has no safety guard in the present jacking process; In tower machine jacking process, when tower machine jacking crossbeam or climb pawl and exist when not in place, the utility model can make the tower machine not allow to carry out the jacking operation; Send sound and light alarm simultaneously; Remind the jacking operating personnel, pawl, jacking crossbeam are climbed in inspection, thereby guarantee the safety of jacking operation.
Description of drawings
Fig. 1 climbs pawl monitoring device structural representation for the utility model.
Fig. 2 is the utility model jacking crossbeam monitoring device structural representation.
Fig. 3 is the electrical schematic diagram of the utility model.
The specific embodiment
Referring to Fig. 1-Fig. 2, the utility model comprises climbs pawl monitoring device, jacking crossbeam monitoring device and control warning device.Climb the pawl monitoring device and jacking crossbeam monitoring device all is provided with two covers; Climbing the pawl monitoring device monitors two respectively and climbs pawl; Jacking crossbeam monitoring device is monitored the claw at jacking crossbeam two ends respectively, and the control warning device is realized stopping and alarm of jacking operation corresponding actions.
One cover climb the pawl monitoring device comprise first erection support 4, first near switch 5, second erection support 7, second near switch 8 and sensor block 6; Second erection support 7 is welded on climbs pawl 9 one ends, and second is fixed in the mounting hole of second erection support 7 near switch 8, and nut screwing clamping is used in both sides; Climb pawl 9 other ends and be fixed with sensor block 6; First erection support 4 is welded on the stock 3, and first is fixed in the mounting hole of first erection support 7 near switch 5, and nut screwing clamping is used in both sides.First is corresponding with sensor block 6 positions near the position of switch 5.Correctly snap in standard knot and mark time 2 when climbing pawl 9, and when bearing tower machine upper weight, second can respond to the gap of climbing between pawl 9 and the standard knot main chord 1 near switch 7, and first judges near switch 5 and sensor block 6 whether climb pawl 9 stressed.This is the installation that a cover is climbed the pawl monitoring device, and the another set of pawl monitoring device of climbing is identical.
Climb the adjustment (referring to Fig. 1) of pawl monitoring device: in the initial installation process of tower machine, after stock installs, need adjustment stock guide wheel gap, assurance stock vertical rod (main chord) is identical with each side clearance of standard knot main chord.After stock guide wheel adjust the clearance was good, the pawl monitoring device was climbed in adjustment.The one, stock is climbed pawl 9 put and snap in 2 the state of marking time, as shown in Figure 1, unclamp near switch 8 both sides nuts second; Adjustment second is near switch 8 positions; Make it just in time can induce standard knot main chord 1 position, promptly, tighten the both sides nut when second during near switch 8 action.The 2nd, to unclamp near switch 5 both sides nuts first, adjustment first position near switch 5 induces sensor block 6 and when moving, tightens the both sides nut near switch 5 when first.Each is climbed pawl 9 and all climbs the pawl monitoring device, tackles the pawl monitoring device of climbing of every side and adjusts respectively.
Jacking crossbeam monitoring device is installed (referring to Fig. 2): the one, weld jacking sensor block 15, two on each upside main chord 14 of marking time at standard knot, and erection support 12 is welded to the upper surface of jacking crossbeam 11 1 ends; The 3rd, jacking is installed in the mounting hole of erection support 12 near switch 13, tighten the both sides nut.This is the installation of an end jacking crossbeam monitoring device, and the other end is identical.
Jacking crossbeam monitoring device is adjusted: jacking crossbeam 11 is snapped in mark time within 16, make it to become normal jacking operating condition, the adjustment jacking is near switch 13, and with the 15 formation effects of jacking sensor block, jacking gets final product near switch 13 actions.
Referring to Fig. 3, the control warning comprises the Hydraulic Station control system, Programmable Logic Controller, intermediate relay and combined aural and visual alarm.3-position 4-way control cock in the Hydraulic Station control system adopts solenoid control; Combined aural and visual alarm is arranged in the Hydraulic Station operating system; Intermediate relay is connected with three position four-way electromagnetic valve coil, Programmable Logic Controller output point and Hydraulic Station operating handle respectively; All of climbing in pawl monitoring device and the jacking crossbeam monitoring device are connected with the Programmable Logic Controller entrance point near switch, and the Programmable Logic Controller output point is controlled three intermediate relays respectively.
Change traditional three-position four-way valve into three position four-way electromagnetic valve in the Hydraulic Station control system; Operating handle can automatically reset; The operation of jacking, decline makes stock top relay K A1, stock fall relay K A2 action through handle; Thereby make oil cylinder stretch electromagnetic valve YV1, the oil cylinder electromagnetic valve YV2 action of contracting, drive the 3-position 4-way valve events, realize the flexible of jacking cylinder.Form the logical relation controller in the jacking process near switch and PLC, pawl is climbed in judgement, whether the jacking crossbeam puts in place, controls the corresponding actions of jacking cylinder and sends sound and light alarm through output relay KA3, KA4, KA5.
From jacking tower crane lifting fender guard principle of work: when in tower machine jacking process; Divide various states, when following state occurring, danger will appear in the jacking operation; Have an accident; So when following state occurring, work from jacking tower crane lifting fender guard, the control warning is sent sound and light alarm and is reminded operating personal and stop corresponding jacking action.
1, climbs pawl and do not snap in and mark time, carry out first jacking stroke, do not mark time, then stop jacking cylinder and stretch out jacking, and send sound and light alarm when jacking crossbeam two ends stick into simultaneously.
2, accomplish first jacking stroke, jacking cylinder shrinks, and prepares the second jacking stroke, and when the jacking cylinder contraction, stock descends, and climbs pawl for two and does not stick into simultaneously when marking time, and the continuation that stops jacking cylinder being shunk, and sends sound and light alarm.
3, climb pawl and all snap in and mark time, the jacking crossbeam carries out the jacking of second stroke, does not mark time when jacking crossbeam two ends stick into simultaneously, then stops jacking cylinder and stretches out jacking, and send sound and light alarm.
Above content described in this specification sheets only is the casehistory that the utility model structure is done.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment; Only otherwise depart from the structure of the utility model or surmount the defined scope of these claims, all should belong to the protection domain of the utility model.
Claims (4)
1. one kind from jacking tower crane lifting fender guard; It is characterized in that: comprise and climb pawl monitoring device, jacking crossbeam monitoring device and control warning device, the described pawl monitoring device of climbing has two covers, is separately positioned on each and climbs pawl and climb on the cooresponding stock of pawl with this; Described jacking crossbeam monitoring device has two covers; Be separately positioned on the two ends of jacking crossbeam, climb the pawl monitoring device and all be connected with the control warning device with jacking crossbeam monitoring device, the control warning device is connected with jacking cylinder.
2. according to claim 1 from jacking tower crane lifting fender guard; It is characterized in that: described one the cover climb comprise in the pawl monitoring device first erection support, first near switch, second erection support, second near switch and sensor block; Second erection support is welded on climbs pawl one end, and second is fixed on second erection support near switch, climbs the pawl other end and is fixed with sensor block; First erection support is welded on the stock; First is fixed on first erection support near switch, and first is corresponding with the sensor block position near the position of switch, and second near the gap between inductive switching and the standard knot.
3. according to claim 1 from jacking tower crane lifting fender guard; It is characterized in that: a described cover jacking crossbeam monitoring device comprises that jacking is near switch, jacking erection support and jacking sensor block; The jacking sensor block is welded on the main chord of each upside of marking time of column crane mast section; The jacking erection support is welded on the upper surface of jacking crossbeam one end, and jacking is fixed on the jacking erection support near switch, and jacking is corresponding with jacking sensor block position near switch.
4. according to claim 1 from jacking tower crane lifting fender guard; It is characterized in that: described control warning device comprises the Hydraulic Station control system; Programmable Logic Controller, intermediate relay and combined aural and visual alarm; 3-position 4-way control cock in the Hydraulic Station control system adopts solenoid control; Combined aural and visual alarm is arranged in the Hydraulic Station operating system; Intermediate relay is connected with three position four-way electromagnetic valve coil, Programmable Logic Controller output point and Hydraulic Station operating handle respectively, and all of climbing in pawl monitoring device and the jacking crossbeam monitoring device are connected with the Programmable Logic Controller entrance point near switch, and the Programmable Logic Controller output point is controlled three intermediate relays respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202507489U CN202226580U (en) | 2011-07-15 | 2011-07-15 | Jacking protection device of self-jacking tower crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202507489U CN202226580U (en) | 2011-07-15 | 2011-07-15 | Jacking protection device of self-jacking tower crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202226580U true CN202226580U (en) | 2012-05-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202507489U Withdrawn - After Issue CN202226580U (en) | 2011-07-15 | 2011-07-15 | Jacking protection device of self-jacking tower crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202226580U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102390787A (en) * | 2011-07-15 | 2012-03-28 | 浙江省建设机械集团有限公司 | Jacking protection device of self-jacking tower crane and control method of jacking protection device |
| CN102923574A (en) * | 2012-11-09 | 2013-02-13 | 三一重工股份有限公司 | Tower crane controlling system and controlling method |
| CN111634833A (en) * | 2020-05-12 | 2020-09-08 | 湖南中联重科建筑起重机械有限责任公司 | Jacking method for tower crane and tower crane |
-
2011
- 2011-07-15 CN CN2011202507489U patent/CN202226580U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102390787A (en) * | 2011-07-15 | 2012-03-28 | 浙江省建设机械集团有限公司 | Jacking protection device of self-jacking tower crane and control method of jacking protection device |
| CN102390787B (en) * | 2011-07-15 | 2013-10-16 | 浙江省建设机械集团有限公司 | Jacking protection device of self-jacking tower crane and control method of jacking protection device |
| CN102923574A (en) * | 2012-11-09 | 2013-02-13 | 三一重工股份有限公司 | Tower crane controlling system and controlling method |
| CN102923574B (en) * | 2012-11-09 | 2014-09-10 | 三一重工股份有限公司 | Tower crane controlling system and controlling method |
| CN111634833A (en) * | 2020-05-12 | 2020-09-08 | 湖南中联重科建筑起重机械有限责任公司 | Jacking method for tower crane and tower crane |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120523 Effective date of abandoning: 20131016 |
|
| RGAV | Abandon patent right to avoid regrant |