CN201358147Y - Lifting mechanism for crane - Google Patents
Lifting mechanism for crane Download PDFInfo
- Publication number
- CN201358147Y CN201358147Y CNU2009200118262U CN200920011826U CN201358147Y CN 201358147 Y CN201358147 Y CN 201358147Y CN U2009200118262 U CNU2009200118262 U CN U2009200118262U CN 200920011826 U CN200920011826 U CN 200920011826U CN 201358147 Y CN201358147 Y CN 201358147Y
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- lifting
- reel
- limit switch
- steel rope
- crane
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Abstract
A lifting mechanism for crane is applied in various bridge cranes, gantry cranes and other devices which have related working property with lifting. The lifting mechanism comprises a lifting drive system, a speed measuring device, an armored rope twisting monitoring device, a balance beam device, a fixed pulley block assembly, a clutch device, a hand-operated mechanism, an overspeed protection device, a shaft breaking protection device, a blow-off limiting device, a lifting limiting device, a lift hook pulley block, an armored rope and a plurality of other accessory components, wherein the lifting mechanism solves the influence of various disadvantage factors which are caused under the fault conditions that the lifting armored rope is ruptured, the lifting is overspeed, the lifting is overtravel, the lifting is not synchronous, the mechanism is cut off, and the like, the lifting mechanism is used to monitor various fault states in real time for enabling the crane to work more safely when the crane is used to swing load.
Description
Technical field
The utility model 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 utility model 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; 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 beneficial effects of the utility model are:
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 utility model 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.
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.
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 (1)
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); 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 (1-1) is rigidly connected by universal coupling (1-4); Two steel rope (13) one ends are fixed on the reel group (1-5), and the other end passes after the assembling of lifting hook pulley group (12) and fixed pulley joins (5), is fixed on the equalizing bar device (4); Speed measuring device (2) is connected with electrical motor (1-1) output shaft by coupler, sprocket wheel, driving band; 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); Equalizing bar device (4) comprises equilibrium arm steel structure, hydraulic damper, and two hydraulic dampers are supported on the two ends of equilibrium arm hinge, on equalizing bar device (4) the monitoring switch is installed; Hand-operated mechanism (7) comprises handle, click, sprocket wheel, messenger chain and support, and hand-operated mechanism (7) is connected with the retarder high speed shaft by clutch equipment (6), and closed interlocking limit switch is installed on clutch equipment (6); Overspeed protection device (8) is installed on the output shaft of retarder; Off-axis fender guard (9) is installed in the bottom of reel group (1-5), on off-axis fender guard (9) the off-axis protection switch is installed; Cutoff inhibiting device (10) is that the cutoff limit switch is installed on the slow-speed shaft of retarder; The inhibiting device (11) that hoists comprises rotary stopper switch, absolute value encoder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200118262U CN201358147Y (en) | 2009-03-11 | 2009-03-11 | Lifting mechanism for crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200118262U CN201358147Y (en) | 2009-03-11 | 2009-03-11 | Lifting mechanism for crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201358147Y true CN201358147Y (en) | 2009-12-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200118262U Expired - Fee Related CN201358147Y (en) | 2009-03-11 | 2009-03-11 | Lifting mechanism for crane |
Country Status (1)
| Country | Link |
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| CN (1) | CN201358147Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101987415A (en) * | 2010-05-28 | 2011-03-23 | 徐州圣邦机械有限公司 | Assembling production line for assembling hoist roller speed reducer assembly |
| CN101510453B (en) * | 2009-03-18 | 2011-06-15 | 太原重工股份有限公司 | Buffering device for balance lever of nuclear plant crane lifting mechanism |
-
2009
- 2009-03-11 CN CNU2009200118262U patent/CN201358147Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101510453B (en) * | 2009-03-18 | 2011-06-15 | 太原重工股份有限公司 | Buffering device for balance lever of nuclear plant crane lifting mechanism |
| CN101987415A (en) * | 2010-05-28 | 2011-03-23 | 徐州圣邦机械有限公司 | Assembling production line for assembling hoist roller speed reducer assembly |
| CN101987415B (en) * | 2010-05-28 | 2012-06-27 | 徐州圣邦机械有限公司 | Assembling production line for assembling hoist roller speed reducer assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: DALIAN HUARUI HEAVY INDUSTRY GROUP CO., LTD. Free format text: FORMER OWNER: HUARUI CO., LTD., DALIAN Effective date: 20120405 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120405 Address after: 116013 Bayi Road, Xigang District, Liaoning, China, No. 169, No. Patentee after: Dalian Huarui Heavy Industry Group Co., Ltd. Address before: 116013 Bayi Road, Xigang District, Liaoning, China, No. 169, No. Patentee before: Huarui Co., Ltd., Dalian |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091209 Termination date: 20180311 |