CN101503169A - Hoisting mechanism for crane - Google Patents
Hoisting mechanism for crane Download PDFInfo
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- CN101503169A CN101503169A CNA2009100106823A CN200910010682A CN101503169A CN 101503169 A CN101503169 A CN 101503169A CN A2009100106823 A CNA2009100106823 A CN A2009100106823A CN 200910010682 A CN200910010682 A CN 200910010682A CN 101503169 A CN101503169 A CN 101503169A
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Abstract
The invention discloses a hoisting mechanism for a crane, which is applied to various bridge cranes, gantry cranes and the other devices relative to hoisting job category. The hoisting mechanism consists of a hoisting driving system, a speed measuring device, a wire rope winding monitoring device, a beam balancing device, a crown block assembly, a clutch device, a hand mechanism, an over speed protector, a shaft breaking protector, a flameout limit device, a hoisting limit device, a hook pulley assembly, a wire rope and the other accessories. The hoisting mechanism eliminates the bad effects which are caused by the errors such as hoisting wire rope breaking, hoisting over speed, hoisting over journey, hoisting desynchrony, mechanism switching off, etc. The hoisting mechanism monitors various fault conditions in real time, thereby work is safer when the crane hoists load.
Description
Technical field
The present invention relates to elevator machinery, especially the lifting mechanism of hoisting crane or other and lifting appliance.
Background technology
Though traditional lifting mechanism can satisfy the job requirement of handling load, all can't under the state of system cut-off, satisfy the function of handling load; Also can't realize under the situation of steel cable fracture suddenly, still can not producing damaging impact, and the hook load that can work on; And traditional lifting mechanism does not have the unit failure monitoring device, makes driver and ground-surface staff not understand the mode of operation of each parts in the lifting mechanism, can not make preventive in advance.Therefore, traditional lifting mechanism safety is lower, is easy to generate fault and causes shutdown and safety misadventure.
Summary of the invention
The present invention takes into full account the safety hazard that exists in traditional lifting mechanism working process and the lifting mechanism of a kind of high security of researching and developing, and purpose is to improve the safety of lifting mechanism work, reduces the shutdown and the safety misadventure that cause because of the lifting mechanism fault.
This lifting mechanism by the drive system that hoists, speed measuring device, steel rope twine that monitoring device, equalizing bar device, fixed pulley assembling are joined, clutch equipment, hand-operated mechanism, overspeed protection device, off-axis fender guard, cutoff inhibiting device, the inhibiting device that hoists, lifting hook pulley group, steel rope and some other associate members form.
The drive system that hoists is to be made of electrical motor, retarder, drg, universal coupling, reel group etc., and two motors is rigidly connected by universal coupling, has guaranteed the electrical motor rotational synchronization.Electrical motor drives the reel group by retarder and rotates.Two steel rope one ends are fixed on the reel group, the other end passes after the assembling of lifting hook pulley group and fixed pulley joins, and is fixed on the equalizing bar device, rotates by reel group cw or C.C.W., steel rope moves into and lays out on the grooving of reel group, realizes the rising and the decline of lifting hook pulley group.Four drgs, two are made as service brake, and two are made as sure brake (delaying time in service brake 1s braking) in addition, can guarantee the actv. brake load, can reduce again and brake too quickly and the generation intense impact.
The core component of speed measuring device is an incremental encoder, and it is connected with motor output shaft by coupler, sprocket wheel, driving band etc.When electrical motor rotates, incremental encoder will be measured the rotative speed of electrical motor, by electric-control system, with this velocity feedback on instrument.
Steel rope twines monitoring device to be made up of picture disruption limit switch, the full limit switch of reel, the empty limit switch of reel and other attached member.
Two steel ropes twine the side that monitoring device is arranged in two reel groups.When the suspension hook group works (presetting the position) when being raised to certain altitude, electric-control system is passed through in the full limit switch action of reel, can realize: suspension hook rises and stops, the drg braking has " fault " indicator lamp to light on the corresponding instrument, prompting " the full spacing alarm of rising reel "; (preset the position) when the suspension hook group drops to certain altitude, electric-control system is passed through in the empty limit switch action of reel, can realize: suspension hook descends and stops, the drg braking has " fault " indicator lamp to light on the corresponding instrument, prompting " the empty spacing alarm of decline reel "; When lap wound takes place in steel rope on reel, the action of picture disruption limit switch, the drg braking has " fault " indicator lamp to light on the corresponding instrument, prompting " warning of steel rope lap wound ".
The equalizing bar device is made up of equilibrium arm steel structure, hydraulic damper etc.Two hydraulic dampers are supported on the two ends of equilibrium arm hinge, can guarantee under the situation of steel cable fracture, the impact that is produced absorbs by hydraulic damper, another root steel rope still can support load and not have obvious impact, and then can be implemented under the faulty condition, finish the lifting of load.Owing to the monitoring switch is installed on the equalizing bar device, therefore the working condition of equalizing bar device can be fed back to operating personal timely.
Hand-operated mechanism is made up of handle, click, sprocket wheel, messenger chain and support etc.Hand-operated mechanism is connected with the retarder high speed shaft by clutch equipment, and lifting mechanism can drive the clutch equipment closure reel by hand-operated mechanism and rotate in the time can't passing through electric up-down load, realizes the lifting of load.Closed interlocking limit switch is installed on clutch equipment, when clutch equipment is closed, the corresponding information prompting will be arranged on instrument, cut off the electrical source of power of hoisting system simultaneously.
Overspeed protection device is installed on the output shaft of retarder, and when motor speed surpassed certain numerical value, then this device action had corresponding fault to show on instrument.
The off-axis fender guard is installed in the bottom of reel group, in case when fracture took place reducer shaft, the off-axis fender guard can support the reel group, the accident that prevents further takes place.The off-axis protection switch is installed on the off-axis fender guard, and when accident took place, the action of off-axis protection switch had corresponding fault to show on instrument.
The cutoff inhibiting device is that the cutoff limit switch is installed on the slow-speed shaft of retarder, and when the suspension hook group hoisted or descend over travel, the action of cutoff limit switch was cut off the electrical source of power of hoisting system, to avoid the generation of accident.
The inhibiting device that hoists is made up of rotary stopper switch, absolute value encoder and other attached member; the rotary stopper switch is that lifting mechanism is provided with pre-deceleration, stops and crosses protection points such as stroke; absolute value encoder is measured the lifting altitude of suspension hook, shows the height and position of suspension hook group on instrument.
The invention has the beneficial effects as follows:
1, by the protection of multinomial single failure, make lifting mechanism safer at work, reliable, strong guarantee the safety of handling load.
2, because each parts is monitored in real time, the mode of operation of each parts in the lifting mechanism can be shown on instrument, so driver and surface work personnel can in time understand the mode of operation of each parts in the mechanism, avoid accident to take place.
3, the application of hand-operated mechanism can guarantee can carry out handling to load under the state of outage or other accident.
4, in the equalizing bar device, use hydraulic damper, can guarantee under the situation of steel cable fracture, the damaging impact that is produced absorbs by hydraulic damper, another root steel rope still can support load, significantly do not impact and have, and then can be implemented under the faulty condition, finish the lifting of load.
Description of drawings
Fig. 1 is the hoisting mechanism for crane front view;
Fig. 2 is the hoisting mechanism for crane birds-eye view;
Fig. 3 is the drive system birds-eye view that hoists;
Fig. 4 twines the monitoring device schematic diagram for steel rope.
1. drive systems that hoist among the figure, 2. speed measuring device, 3. steel rope twines monitoring device; 4. equalizing bar device; 5. the fixed pulley assembling is joined, 6. clutch equipment, 7. hand-operated mechanism; 8. overspeed protection device; 9. off-axis fender guard, 10. cutoff inhibiting device, 11. inhibiting device that hoist; 12. lifting hook pulley group; 13. steel rope, 1-1. electrical motor, 1-2. retarder; 1-3. drg; 1-4. universal coupling, 1-5. reel group, the empty limit switch of 3-1. reel; 3-2. the picture disruption limit switch, the full limit switch of 3-3. reel.
The specific embodiment
As depicted in figs. 1 and 2, the present invention by the drive system 1 that hoists, speed measuring device 2, steel rope twine that monitoring device 3, equalizing bar device 4, fixed pulley assembling join 5, clutch equipment 6, hand-operated mechanism 7, overspeed protection device 8, off-axis fender guard 9, cutoff inhibiting device 10, the inhibiting device 11 that hoists, lifting hook pulley group 12, steel rope 13 and some other associate members form.
The drive system that hoists among Fig. 31 is to be made of electrical motor 1-1, retarder 1-2, drg 1-3, universal coupling 1-4, reel group 1-5 etc.
Two motors is rigidly connected by universal coupling 1-4, has guaranteed the electrical motor rotational synchronization.Electrical motor 1-1 drives reel group 1-5 by retarder 1-2 and rotates.Two steel rope 13 1 ends are fixed on the reel group 1-5, the other end passes after the assembling of lifting hook pulley group 12 and fixed pulley joins 5, be fixed on the equalizing bar device 4, rotate by reel group 1-5 cw or C.C.W., steel rope 13 moves into and lays out on the grooving of reel group 1-5, realizes the rising and the decline of lifting hook pulley group 12.Four drg 1-3, two are made as service brake, and two are made as sure brake (delaying time in service brake 1s braking) in addition, can guarantee the actv. brake load, can reduce again and brake too quickly and the generation intense impact.
The core component of speed measuring device 2 is an incremental encoder, and it is connected with electrical motor 1-1 output shaft by coupler, sprocket wheel, driving band etc.When electrical motor 1-1 rotates, incremental encoder will be measured the rotative speed of electrical motor 1-1, by electric-control system, with this velocity feedback on instrument.
Steel rope winding monitoring device 3 is made up of picture disruption limit switch 3-2, the full limit switch 3-3 of reel, the empty limit switch 3-1 of reel and other attached member among Fig. 4.
Two steel ropes twine the side that monitoring device 3 is arranged in two reel group 1-5.When the suspension hook group works (presetting the position) when being raised to certain altitude, electric-control system is passed through in the full limit switch 3-3 action of reel, can realize: suspension hook rises and stops, the drg braking has " fault " indicator lamp to light on the corresponding instrument, prompting " the full spacing alarm of rising reel "; (preset the position) when the suspension hook group drops to certain altitude, electric-control system is passed through in the empty limit switch 3-1 action of reel, can realize: suspension hook descends and stops, the drg braking has " fault " indicator lamp to light on the corresponding instrument, prompting " the empty spacing alarm of decline reel "; When lap wound takes place in steel rope on reel, picture disruption limit switch 3-2 action, the drg braking has " fault " indicator lamp to light on the corresponding instrument, prompting " warning of steel rope lap wound ".
Equalizing bar device 4 is made up of equilibrium arm steel structure, hydraulic damper etc.Two hydraulic dampers are supported on the two ends of equilibrium arm hinge, can guarantee under the situation of steel cable fracture, the impact that is produced absorbs by hydraulic damper, another root steel rope still can support load and not have obvious impact, and then can be implemented under the faulty condition, finish the lifting of load.Owing to the monitoring switch is installed on equalizing bar device 4, therefore the working condition of equalizing bar device 4 can be fed back to operating personal timely.
Hand-operated mechanism 7 is made up of handle, click, sprocket wheel, messenger chain and support etc.Hand-operated mechanism 7 is connected with the retarder high speed shaft by clutch equipment 6, and lifting mechanism can drive clutch equipment 6 closures reel by hand-operated mechanism and rotate in the time can't passing through electric up-down load, realizes the lifting of load.Closed interlocking limit switch is installed on clutch equipment 6, when clutch equipment 6 closures, the corresponding information prompting will be arranged on instrument, cut off the electrical source of power of hoisting system simultaneously.
Overspeed protection device 8 is installed on the output shaft of retarder, and when motor speed surpassed certain numerical value, then this device action had corresponding fault to show on instrument.
Off-axis fender guard 9 is installed in the bottom of reel group 1-5, in case when fracture took place reducer shaft, off-axis fender guard 9 can support reel group 1-5, the accident that prevents further takes place.The off-axis protection switch is installed on off-axis fender guard 9, and when accident took place, the action of off-axis protection switch had corresponding fault to show on instrument.
Cutoff inhibiting device 10 is that the cutoff limit switch is installed on the slow-speed shaft of retarder, and when the suspension hook group hoisted or descend over travel, the action of cutoff limit switch was cut off the electrical source of power of hoisting system, to avoid the generation of accident.
The inhibiting device 11 that hoists is made up of rotary stopper switch, absolute value encoder and other attached member; the rotary stopper switch is that lifting mechanism is provided with pre-deceleration, stops and crosses protection points such as stroke; absolute value encoder is measured the lifting altitude of suspension hook, shows the height and position of suspension hook group on instrument.
The application of this kind high security lifting mechanism makes that hoisting crane work performance is safer, reliable.Simultaneously, the real time operation state of grasping each parts in the mechanism for driver and surface work personnel provides failure-free information, helps avoiding the generation of safety misadventure.
Claims (10)
1, a kind of hoisting mechanism for crane; it comprises the drive system that hoists (1), lifting hook pulley group (12), steel rope (13), it is characterized in that: comprise that also speed measuring device (2), steel rope twine monitoring device (3), equalizing bar device (4), fixed pulley assembling and join (5), clutch equipment (6), hand-operated mechanism (7), overspeed protection device (8), off-axis fender guard (9), cutoff inhibiting device (10), the inhibiting device that hoists (11).
2, hoisting mechanism for crane as claimed in claim 1, it is characterized in that: the drive system that hoists (1) comprises electrical motor (1-1), retarder (1-2), drg (1-3), universal coupling (1-4), reel group (1-5), and two motors is rigidly connected by universal coupling (1-4); Two steel rope (13) one ends are fixed on the reel group (1-5), the other end passes after the assembling of lifting hook pulley group (12) and fixed pulley joins (5), be fixed on the equalizing bar device (4), rotate by reel group (1-5) cw or C.C.W., steel rope (13) moves into and lays out on the grooving of reel group (1-5), realizes the rising and the decline of lifting hook pulley group (12); Four drgs (1-3), two are made as service brake, and two are made as sure brake in addition.
3, hoisting mechanism for crane as claimed in claim 1, it is characterized in that: the core component of speed measuring device (2) is an incremental encoder, it is connected with electrical motor (1-1) output shaft by coupler, sprocket wheel, driving band, when electrical motor (1-1) rotates, incremental encoder will be measured the rotative speed of electrical motor (1-1), by electric-control system, with this velocity feedback on instrument.
4, hoisting mechanism for crane as claimed in claim 1, it is characterized in that: steel rope twines monitoring device (3) and comprises picture disruption limit switch (3-2), the full limit switch (3-3) of reel, the empty limit switch (3-1) of reel, and two steel ropes twine the side that monitoring device (3) is arranged in two reel groups (1-5).
5, hoisting mechanism for crane as claimed in claim 1, it is characterized in that: equalizing bar device (4) comprises equilibrium arm steel structure, hydraulic damper, two hydraulic dampers are supported on the two ends of equilibrium arm hinge, under the situation of steel cable fracture, the impact that is produced absorbs by hydraulic damper, another root steel rope still can support load and not have obvious impact, and on equalizing bar device (4), the monitoring switch is installed, the working condition of equalizing bar device (4) is fed back to operating personal timely.
6, hoisting mechanism for crane as claimed in claim 1, it is characterized in that: hand-operated mechanism (7) comprises handle, click, sprocket wheel, messenger chain and support, hand-operated mechanism (7) is connected with the retarder high speed shaft by clutch equipment (6), lifting mechanism is in the time can't passing through electric up-down load, can be with clutch equipment (6) closure, driving reel by hand-operated mechanism rotates, realize the lifting of load, closed interlocking limit switch is installed on clutch equipment (6), when clutch equipment (6) is closed, the corresponding information prompting will be arranged on instrument, cut off the electrical source of power of hoisting system simultaneously.
7, hoisting mechanism for crane as claimed in claim 1 is characterized in that: overspeed protection device (8) is installed on the output shaft of retarder, and when motor speed surpassed certain numerical value, then this device action had corresponding fault to show on instrument.
8, hoisting mechanism for crane as claimed in claim 1; it is characterized in that: off-axis fender guard (9) is installed in the bottom of reel group (1-5); when in case fracture takes place in reducer shaft; off-axis fender guard (9) can support reel group (1-5); on off-axis fender guard (9), the off-axis protection switch is installed; when accident took place, the action of off-axis protection switch had corresponding fault to show on instrument.
9, hoisting mechanism for crane as claimed in claim 1, it is characterized in that: cutoff inhibiting device (10) is that the cutoff limit switch is installed on the slow-speed shaft of retarder, when the suspension hook group hoisted or descend over travel, the electrical source of power of hoisting system was cut off in the action of cutoff limit switch.
10, hoisting mechanism for crane as claimed in claim 1; it is characterized in that: the inhibiting device that hoists (11) comprises rotary stopper switch, absolute value encoder; the rotary stopper switch is that lifting mechanism is provided with pre-deceleration, stops and crosses stroke protection point; absolute value encoder is measured the lifting altitude of suspension hook, shows the height and position of suspension hook group on instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100106823A CN101503169A (en) | 2009-03-11 | 2009-03-11 | Hoisting mechanism for crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100106823A CN101503169A (en) | 2009-03-11 | 2009-03-11 | Hoisting mechanism for crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101503169A true CN101503169A (en) | 2009-08-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100106823A Pending CN101503169A (en) | 2009-03-11 | 2009-03-11 | Hoisting mechanism for crane |
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| CN (1) | CN101503169A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101804947A (en) * | 2010-04-19 | 2010-08-18 | 黄河勘测规划设计有限公司 | Single and double hanging point conversion type lifting device |
| WO2011063640A1 (en) * | 2009-11-27 | 2011-06-03 | 湖南三一智能控制设备有限公司 | Crane transition assisting device, transport trailer with assisting device and crane disassembling/assembling method by use of assisting device |
| CN102285604A (en) * | 2011-05-31 | 2011-12-21 | 太原重工股份有限公司 | Single-joint winding drum hoisting mechanism with over-load protection device |
| CN103332622A (en) * | 2013-07-02 | 2013-10-02 | 中科华核电技术研究院有限公司 | Electric block for operation of nuclear fuel assembly |
| CN105231952A (en) * | 2015-10-23 | 2016-01-13 | 上海普英特高层设备有限公司 | Simple-type hoisting mechanism used for window-cleaning machine |
| CN107934818A (en) * | 2017-12-21 | 2018-04-20 | 大连华锐重工集团股份有限公司 | A kind of polar crane lifting mechanism with off-axis defencive function |
| CN112777490A (en) * | 2021-01-22 | 2021-05-11 | 大连美恒时代科技有限公司 | Method and device for preventing hook slipping of crane |
| CN113682988A (en) * | 2021-08-31 | 2021-11-23 | 深圳市海浦蒙特科技有限公司 | Tower crane and anti-top-collision protection method, system and device thereof |
-
2009
- 2009-03-11 CN CNA2009100106823A patent/CN101503169A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011063640A1 (en) * | 2009-11-27 | 2011-06-03 | 湖南三一智能控制设备有限公司 | Crane transition assisting device, transport trailer with assisting device and crane disassembling/assembling method by use of assisting device |
| CN101804947A (en) * | 2010-04-19 | 2010-08-18 | 黄河勘测规划设计有限公司 | Single and double hanging point conversion type lifting device |
| CN102285604A (en) * | 2011-05-31 | 2011-12-21 | 太原重工股份有限公司 | Single-joint winding drum hoisting mechanism with over-load protection device |
| CN103332622A (en) * | 2013-07-02 | 2013-10-02 | 中科华核电技术研究院有限公司 | Electric block for operation of nuclear fuel assembly |
| CN103332622B (en) * | 2013-07-02 | 2016-07-13 | 中科华核电技术研究院有限公司 | Nuclear fuel assembly transhipment electric block |
| CN105231952A (en) * | 2015-10-23 | 2016-01-13 | 上海普英特高层设备有限公司 | Simple-type hoisting mechanism used for window-cleaning machine |
| CN107934818A (en) * | 2017-12-21 | 2018-04-20 | 大连华锐重工集团股份有限公司 | A kind of polar crane lifting mechanism with off-axis defencive function |
| CN112777490A (en) * | 2021-01-22 | 2021-05-11 | 大连美恒时代科技有限公司 | Method and device for preventing hook slipping of crane |
| CN112777490B (en) * | 2021-01-22 | 2023-05-09 | 大连美恒时代科技有限公司 | Method and device for preventing hook slipping of crane |
| CN113682988A (en) * | 2021-08-31 | 2021-11-23 | 深圳市海浦蒙特科技有限公司 | Tower crane and anti-top-collision protection method, system and device thereof |
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Open date: 20090812 |