CN103693578B - Tower crane lifting mechanism - Google Patents
Tower crane lifting mechanism Download PDFInfo
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- CN103693578B CN103693578B CN201410005013.8A CN201410005013A CN103693578B CN 103693578 B CN103693578 B CN 103693578B CN 201410005013 A CN201410005013 A CN 201410005013A CN 103693578 B CN103693578 B CN 103693578B
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- brake
- caliper
- piston
- lift mechanism
- piston rod
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Abstract
The invention belongs to the field of cranes and in particular discloses a tower crane lifting mechanism which is safe and reliable. The tower crane lifting mechanism comprises a winding drum, a motor, a speed reducer, an electromagnetic brake, a hydraulic pump station and a clamp type brake, wherein one end of the winding drum is connected with the speed reducer in a transmission manner; the motor is connected with the speed reducer; the electromagnetic brake is mounted on the motor; a brake side plate is arranged at the other end of the winding drum opposite to the speed reducer; the clamp type brake and the brake side plate are matched and mounted; the clamp type brake is connected with the hydraulic pump station through a hydraulic pipeline. Due to the adoption of the hydraulic pump station and the clamp type brake, the hydraulic pump station, the clamp type brake and the electromagnetic brake form a double insurance, so that a brake effect can still be guaranteed when the electromagnetic brake has faults, and thus the safety of the tower crane lifting mechanism is improved; the clamp type brake adopts a special structure and only can be opened in an energized state, so that the clamp type brake is capable of braking the winding drum to avoid danger when the power is in failure.
Description
Technical field
The present invention relates to lifting field, especially a kind of Lift Mechanism in Power Hoist.
Background technology
Constantly develop now with China's economy, building is more and more, building needs to use various derrick crane, tower crane
Safety issue be particularly important, this requires that tower crane each parts quality safety is reliable, and mechanism is the important portion of tower crane
Part, so the security of mechanism must be definitely reliable, this requires the braking ability of mechanism it has to be ensured that it is desirable to organization hydraulic pressure
The performance of pumping plant must be safe and reliable, and this is the performance issue of a system, and any one link goes wrong and all can lead to sternly
The quality accident of weight.
Mechanism is the important component part of main equipment, and the mechanism of derrick crane is by lifting mechanism, jib lubbing mechanism, revolution
Mechanism and lifting body etc. form, and each mechanism is all the important component part of tower crane, wherein one of operating frequency highest mechanism
It is exactly lifting mechanism.The performance of Lift Mechanism in Power Hoist decides the lifting performance of tower crane, so its braking ability is particularly important.Tower
Typically by electric control, due to development scientific and technological now, electric braking is by variable-frequency motor certainly for the braking of machine lifting mechanism
Realize braking with electromagnetic brake.Although electromagnetic brake can be rapidly performed by braking, once breaking down, just
Brake fade can be made, and traditional mechanism does not have safeguard procedures, be very easy to cause security incident.
Content of the invention
The technical problem to be solved is to provide a kind of safe and reliable Lift Mechanism in Power Hoist.
The present invention solves the Lift Mechanism in Power Hoist that its technical problem is adopted, including reel, motor, decelerator and electromagnetic system
Dynamic device, one end of described reel and decelerator are in transmission connection, and described motor is connected with decelerator, and described electromagnetic brake is arranged on
On motor, also include hydraulic power unit and caliper brake, the other end with respect to decelerator of described reel is provided with brake side
Plate, described caliper brake is installed with braking side plate cooperation, and described caliper brake is connected by fluid pressure line with hydraulic power unit.
It is further that described caliper brake includes caliper and drive mechanism, described drive mechanism includes housing, sets
Put piston rod in housing, piston, butterfly spring, spring cavity and hydraulic fluid chamber, described butterfly spring and piston are respectively provided with
At the two ends of piston rod, described piston is located in hydraulic fluid chamber, and described butterfly spring is located in spring cavity；The one of described caliper
Matched with described piston rod in side, opposite side is connected with housing；Described butterfly spring is Pre strained state and pretension force direction and system
It is identical that dynamic pincers cut out direction；The driving direction of described piston is identical with the direction that caliper is opened.
It is further that described drive mechanism also includes adjusting screw rod and push rod, described piston rod is tubulose, described push rod
It is co-axially located in piston rod and is axially movable, described push rod is arranged in piston rod by screw thread；Described push rod one end with
The side of caliper coordinates to drive caliper, and the other end is engaged with adjusting screw rod.
It is further that described spring cavity is located at the one end near caliper, after described hydraulic fluid chamber is located at spring cavity.
It is further also to include adjusting nut, described adjusting nut installs piston by being threadably mounted at piston rod
One end, described nut passes through to rotate the position of regulating piston.
It is further that the surface of described hydraulic power unit is provided with radiator structure.
It is further that described radiator structure is the fin composition being evenly arranged in hydraulic power unit surface.
It is further that described caliper brake is provided with four.
The invention has the beneficial effects as follows: due to being provided with hydraulic power unit and caliper brake, therefore can be with electromagnetic braking
Device forms dual fail-safe together, thus remaining able in electromagnetic brake fault ensure braking effect so that Lift Mechanism in Power Hoist
Security be improved.Caliper brake can adopt application specific architecture, only just can open in energising, so, in electric power event
During barrier, caliper brake being capable of brake drum, it is to avoid dangerous occur.
Brief description
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the top view of the present invention；
Fig. 3 is the schematic diagram of caliper brake；
Fig. 4 is hydraulic schematic diagram during caliper brake braking；
Fig. 5 is hydraulic schematic diagram when caliper brake is opened；
In figure parts, position and numbering: reel 1, motor 2, decelerator 3, electromagnetic brake 4, hydraulic power unit 5, jaw type
Brake 6, braking side plate 7, underframe 8, caliper 9, housing 10, piston rod 11, piston 12, butterfly spring 13, hydraulic fluid chamber 14,
Adjusting screw rod 15, push rod 16, adjusting nut 17.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.
As depicted in figs. 1 and 2, the present invention includes reel 1, motor 2, decelerator 3 and electromagnetic brake 4, described reel 1
One end is in transmission connection with decelerator 3, and described motor 2 is connected with decelerator 3, and described electromagnetic brake 4 is arranged on motor 2, also
Including hydraulic power unit 5 and caliper brake 6, the other end with respect to decelerator 3 of described reel 1 is provided with braking side plate 7, institute
State caliper brake 6 to install with braking side plate 7 cooperation, described caliper brake 6 is connected by fluid pressure line with hydraulic power unit 5.
Caliper brake 6 can be using active brake or passive braking it is recommended that adopt passive mode of braking, so can be with electromagnetic system
Dynamic device 4 cooperates, and forms main-passive combined type braking, thus being energized or all can carrying out urgent in the case of cold
Braking, improves the security of mechanism.Braking side plate 7, preferably with being detachably connected, so can enter after Long-Time Service abrasion
Row is changed.Friction plate is also provided with caliper brake 6, friction plate adopts removable mounting means.The number of caliper brake 6
Amount can be arranged according to actual conditions, and general setting 2-4 is individual, is driven by same hydraulic power unit 5.
Passive braking can in the following ways, as shown in figure 3, described caliper brake 6 includes caliper 9 and driving machine
Structure, described drive mechanism include housing 10, the piston rod 11 being arranged in housing 10, piston 12, butterfly spring 13, spring cavity and
Hydraulic fluid chamber 14, described butterfly spring 13 and piston 12 are separately positioned on the two ends of piston rod 11, and described piston 12 is located at hydraulic pressure
In oil pocket 14, described butterfly spring 13 is located in spring cavity；Matched with described piston rod 11 in the side of described caliper 9, separately
Side is connected with housing 10；For Pre strained state and pretension force direction is identical with caliper 9 closing direction for described butterfly spring 13；Institute
The driving direction stating piston 12 is identical with the direction that caliper 9 is opened.Above-mentioned caliper brake 6 works as follows, mechanism
During normal operation, the hydraulic oil that hydraulic power unit 5 provides enters in hydraulic fluid chamber 14 so that piston 12 moves, piston rod 11 energy
The pretightning force of enough opposing butterfly springs 13 is moved, so that caliper 9 is in open mode；Once being in power-off or artificial pass
When closing hydraulic power unit 5, hydraulic power unit 5 does not reoffer hydraulic pressure, and piston rod 11 moves so that making under the pretightning force of butterfly spring 13
Dynamic pincers 9 are closed, and are achieved in braking.This structure can adapt to various emergency ratings, lost efficacy in electromagnetic brake 4
In the case of remain able to arrestment mechanism, thus forming dual fail-safe, increase mechanism security reliability.
For the ease of adjusting the sensitivity of caliper 9, as shown in figure 3, described drive mechanism also includes adjusting screw rod 15 He
Push rod 16, described piston rod 11 is tubulose, and described push rod 16 is co-axially located in piston rod 11 and is axially movable, described push rod
16 are arranged in piston rod 11 by screw thread；Described push rod 16 one end is coordinated with the side of caliper 9 to drive caliper 9, separately
One end is engaged with adjusting screw rod 15.Now, rotate the distance that adjusting screw rod 15 can control push rod 16 and caliper 9, from
And can enable push rod 16 faster or slower driving caliper 9.After the friction plate on caliper 9 is thinning, you can adjust
Nearly push rod 16 is apart from so that push rod 16 can compensate the thinning impact of friction plate.Ensure the sensitivity of braking.
Specifically, as shown in figure 3, described spring cavity is located at the one end near caliper 9, described hydraulic fluid chamber 14 is located at bullet
After spring chamber.Certainly, both positions can exchange, should be according to actual conditions depending on.
For the ease of regulating piston 12 position, as shown in figure 3, also including adjusting nut 17, described adjusting nut 17 passes through
It is threadably mounted at one end that piston rod 11 installs piston 12, described nut passes through to rotate the position of regulating piston 12.
For the ease of radiating, the surface of described hydraulic power unit 5 is provided with radiator structure.Mechanism is assemblied in tower crane counter-jib
On, its limited space system installed, so the structure design of organization hydraulic pressure pumping plant is closely, appearance and size is as little as possible, with
When again consider radiate, so fuel tank outer wall using the version being evenly arranged fin.So, working long hours
During, hydraulic power unit 5 also will not be overheated.
Embodiment
The caliper brake of a certain model, its in the following manner:
A) brake
When electromagnet (dt) dead electricity of hydraulic system, oil flows direction such as Fig. 4, and now system pressure is approximately zero, dish
Spring 13 is no longer compressed, and spring force passes through piston rod 11, adjusting screw rod 15 and push rod 16 and acts on caliper 9, to brake
On braking side plate 7.Meanwhile, piston 12 is also driven reach by look nut 17, and look nut 17 is fixed on piston rod 11.Braking
Moment depends on the spring force of butterfly spring 13.
B) release braking
When the electromagnet (dt) of hydraulic system obtains electric, oil stream direction such as Fig. 5, now the pressure of hydraulic system is 140 bars,
140 bar pressure oil are filled with hydraulic fluid chamber 14, move after promoting piston 12, move, by piston rod 11 after driving look nut 17 simultaneously
Compression disk spring 13.Adjusting screw rod 15 moves after being also pushed to, and push rod 16 is relaxed, and braking side plate 7 does not have power to act on, braking
Moment is zero.
Claims (8)
1. Lift Mechanism in Power Hoist, including reel (1), motor (2), decelerator (3) and electromagnetic brake (4), described reel (1)
One end is in transmission connection with decelerator (3), and described motor (2) is connected with decelerator (3), and described electromagnetic brake (4) is arranged on electricity
Machine (2) upper it is characterised in that: also include hydraulic power unit (5) and caliper brake (6), caliper brake (6) is using passive system
Dynamic, the other end with respect to decelerator (3) of described reel (1) is provided with braking side plate (7), described caliper brake (6) with
Braking side plate (7) cooperation is installed, and described caliper brake (6) is connected by fluid pressure line with hydraulic power unit (5)；Caliper brake
(6) cooperate with electromagnetic brake (4), form main-passive combined type braking, thus in the case of being energized or be cold all
Brake hard can be carried out.
2. Lift Mechanism in Power Hoist as claimed in claim 1 it is characterised in that: described caliper brake (6) includes caliper (9)
And drive mechanism, described drive mechanism includes housing (10), the piston rod (11) being arranged in housing (10), piston (12), butterfly
Shape spring (13), spring cavity and hydraulic fluid chamber (14), described butterfly spring (13) and piston (12) are separately positioned on piston rod
(11) two ends, described piston (12) is located in hydraulic fluid chamber (14), and described butterfly spring (13) is located in spring cavity；Described system
Matched with described piston rod (11) in the side of dynamic pincers (9), opposite side is connected with housing (10)；Described butterfly spring (13) is pre-
Tight state and pretension force direction is identical with caliper (9) closing direction；The driving direction of described piston (12) and caliper (9) are beaten
The direction opened is identical.
3. Lift Mechanism in Power Hoist as claimed in claim 2 it is characterised in that: described drive mechanism also includes adjusting screw rod (15)
With push rod (16), described piston rod (11) is tubulose, and described push rod (16) is co-axially located in piston rod (11) and can axially transport
Dynamic, described push rod (16) is arranged in piston rod (11) by screw thread；The side of described push rod (16) one end and caliper (9) is joined
Close to drive caliper (9), the other end is engaged with adjusting screw rod (15).
4. Lift Mechanism in Power Hoist as claimed in claim 2 it is characterised in that: described spring cavity is located near caliper (9)
One end, after described hydraulic fluid chamber (14) is located at spring cavity.
5. Lift Mechanism in Power Hoist as claimed in claim 2 it is characterised in that: also include adjusting nut (17), described regulation spiral shell
Female (17) install one end of piston (12) by being threadably mounted at piston rod (11), and described nut passes through to rotate regulating piston (12)
Position.
6. Lift Mechanism in Power Hoist as claimed in claim 1 it is characterised in that: the surface of described hydraulic power unit (5) is provided with scattered
Heat structure.
7. Lift Mechanism in Power Hoist as claimed in claim 6 it is characterised in that: described radiator structure be evenly arranged in hydraulic pump
Stand (5) surface fin composition.
8. the Lift Mechanism in Power Hoist as described in claim 1 to 7 any claim it is characterised in that: described caliper brake
(6) it is provided with four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410005013.8A CN103693578B (en) | 2014-01-06 | 2014-01-06 | Tower crane lifting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410005013.8A CN103693578B (en) | 2014-01-06 | 2014-01-06 | Tower crane lifting mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103693578A CN103693578A (en) | 2014-04-02 |
| CN103693578B true CN103693578B (en) | 2017-01-25 |
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ID=50355279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410005013.8A Active CN103693578B (en) | 2014-01-06 | 2014-01-06 | Tower crane lifting mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103693578B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108163742B (en) * | 2016-05-13 | 2019-09-27 | 张作玮 | A kind of high altitude operation steel wire discharging mechanism |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3964692A (en) * | 1973-08-03 | 1976-06-22 | Mattco, Inc. | Winch spool with disc brake system |
| EP0796814A2 (en) * | 1996-03-22 | 1997-09-24 | Sanyo Kogyo Co., Ltd. | Brake for hoist gear |
| CN2866970Y (en) * | 2006-02-23 | 2007-02-07 | 焦作瑞塞尔盘式制动器有限公司 | Power-failure protection clamp disc type brake |
| CN101273213A (en) * | 2005-09-27 | 2008-09-24 | 卢卡斯汽车股份有限公司 | Vehicle brake, in particular caliper brake |
| CN201288024Y (en) * | 2008-06-19 | 2009-08-12 | 抚顺永茂建筑机械有限公司 | Double-brake lifting mechanism of stacker crane |
| CN202245905U (en) * | 2011-08-26 | 2012-05-30 | 西安探矿机械厂 | Hydraulic disc-type brake winch for core drilling machine |
| CN103144647A (en) * | 2013-02-22 | 2013-06-12 | 山西潞安环保能源开发股份有限公司 | Hydraulic clamp-type brake |
| CN203362914U (en) * | 2013-05-31 | 2013-12-25 | 四川建设机械（集团）股份有限公司 | Hydraulic disc brake caliper |
| CN203715162U (en) * | 2014-01-06 | 2014-07-16 | 四川建设机械（集团）股份有限公司 | Tower crane hoisting mechanism |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201530690U (en) * | 2009-09-23 | 2010-07-21 | 四川建设机械（集团）股份有限公司 | Large-tonnage tower crane hoisting mechanism |
-
2014
- 2014-01-06 CN CN201410005013.8A patent/CN103693578B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3964692A (en) * | 1973-08-03 | 1976-06-22 | Mattco, Inc. | Winch spool with disc brake system |
| EP0796814A2 (en) * | 1996-03-22 | 1997-09-24 | Sanyo Kogyo Co., Ltd. | Brake for hoist gear |
| CN101273213A (en) * | 2005-09-27 | 2008-09-24 | 卢卡斯汽车股份有限公司 | Vehicle brake, in particular caliper brake |
| CN2866970Y (en) * | 2006-02-23 | 2007-02-07 | 焦作瑞塞尔盘式制动器有限公司 | Power-failure protection clamp disc type brake |
| CN201288024Y (en) * | 2008-06-19 | 2009-08-12 | 抚顺永茂建筑机械有限公司 | Double-brake lifting mechanism of stacker crane |
| CN202245905U (en) * | 2011-08-26 | 2012-05-30 | 西安探矿机械厂 | Hydraulic disc-type brake winch for core drilling machine |
| CN103144647A (en) * | 2013-02-22 | 2013-06-12 | 山西潞安环保能源开发股份有限公司 | Hydraulic clamp-type brake |
| CN203362914U (en) * | 2013-05-31 | 2013-12-25 | 四川建设机械（集团）股份有限公司 | Hydraulic disc brake caliper |
| CN203715162U (en) * | 2014-01-06 | 2014-07-16 | 四川建设机械（集团）股份有限公司 | Tower crane hoisting mechanism |
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| Publication number | Publication date |
|---|---|
| CN103693578A (en) | 2014-04-02 |
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