CN203715162U - Tower crane hoisting mechanism - Google Patents
Tower crane hoisting mechanism Download PDFInfo
- Publication number
- CN203715162U CN203715162U CN201420006649.XU CN201420006649U CN203715162U CN 203715162 U CN203715162 U CN 203715162U CN 201420006649 U CN201420006649 U CN 201420006649U CN 203715162 U CN203715162 U CN 203715162U
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- China
- Prior art keywords
- brake
- piston
- lift mechanism
- rod
- piston rod
- 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.)
- Expired - Lifetime
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- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 239000012530 fluid Substances 0.000 claims description 12
- 230000033001 locomotion Effects 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 239000003638 chemical reducing agent Substances 0.000 abstract 4
- 238000004804 winding Methods 0.000 abstract 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000008520 organization Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000080 chela (arthropods) Anatomy 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Landscapes
- Braking Arrangements (AREA)
Abstract
The utility model discloses the field of hoisting and particularly relates to a tower crane hoisting mechanism. The safe and reliable tower crane hoisting mechanism comprises a winding drum, a motor, a speed reducer and an electromagnetic brake. One end of the winding drum is in transmission connection with the speed reducer, the motor is connected with the speed reducer, and the electromagnetic brake is installed on the motor. The tower crane hoisting mechanism further comprises a hydraulic pump station and a pliers type brake, a braking side plate is arranged at the other end of the winding drum opposite to the speed reducer, and the pliers type brake is installed with the braking side plate in a matched mode and connected with a hydraulic pipeline through the hydraulic pump station. Due to the fact that the hydraulic pump station and the pliers type brake are arranged, the hydraulic pump station and the pliers type brake can form double safety together with the electromagnetic brake, the braking effect can still be guaranteed when faults occur in the electromagnetic brake, and safety of the tower crane hoisting mechanism is improved. A special structure is adopted for the pliers type brake, the pliers type brake can be opened only when being electrified and can perform braking on the winding drum in case of electric power faults, and danger is avoided.
Description
Technical field
The utility model relates to lifting field, especially a kind of Lift Mechanism in Power Hoist.
Background technology
At present along with the economic development of China, building is more and more, building need to be used various tower crane, it is particularly important that the safety issue of tower machine seems, this just requires each parts quality safety of tower machine reliable, mechanism is the vitals of tower machine, so the safety of mechanism must be definite reliable, this just requires the deceleration and stopping performance of mechanism to guarantee, require the performance of organization hydraulic pressure pumping plant necessary safe and reliable, this is the performance issue of a system, and any one link goes wrong and all can cause serious quality accident.
Mechanism is the important component part of main equipment, the mechanism of tower crane is comprised of lifting mechanism, luffing mechanism, swing type mechanism and lifting body etc., each mechanism is all the important component part of tower machine, and one of mechanism that wherein frequency of operation is the highest is exactly lifting mechanism.The performance of Lift Mechanism in Power Hoist is determining the lifting performance of tower machine, so its deceleration and stopping performance is particularly important.The braking of Lift Mechanism in Power Hoist is normally by electric control, and due to the development of current science and technology, electric braking is realized braking by variable-frequency motor magnet stopper.Although magnet stopper can be braked by fast speed, once et out of order will make braking failure, and traditional mechanism does not have safeguard procedures, be very easy to cause safety misadventure.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of safe and reliable Lift Mechanism in Power Hoist.
The utility model solves the Lift Mechanism in Power Hoist that its technical matters adopts, comprise reel, motor, retarder and magnet stopper, one end and the retarder of described reel are in transmission connection, described motor is connected with retarder, described magnet stopper is arranged on motor, also comprise hydraulic power unit and caliper brake, the other end with respect to retarder of described reel is provided with braking side plate, described caliper brake coordinates installation with braking side plate, and described caliper brake is connected by hydraulic tubing with hydraulic power unit.
Be further, described caliper brake comprises brake clamp and driver train, described driver train comprises housing, is arranged on piston rod, piston, belleville spring, spring cavity and fluid chamber in housing, described belleville spring and piston are separately positioned on the two ends of piston rod, described piston is positioned at fluid chamber, and described belleville spring is positioned at spring cavity; One side of described brake clamp matches with described piston rod, and opposite side is connected with housing; Described belleville spring is that Pre strained state and predetermincd tension direction are identical with brake clamp closing direction; The direction that the driving direction of described piston is opened with brake clamp is identical.
Further, described driver train also comprises adjusting screw(rod) and push rod, and described piston rod is tubulose, and described push rod is coaxially arranged in piston rod and can axial motion, and described push rod is arranged in piston rod by screw thread; Described push rod one end coordinates to drive brake clamp with a side of brake clamp, and the other end contacts cooperation with adjusting screw(rod).
Further, described spring cavity is positioned at the one end near brake clamp, after described fluid chamber is positioned at spring cavity.
Further, also comprise setting nut, described setting nut is arranged on by screw thread one end that piston rod is installed piston, and described nut is by the position of rotation adjusting piston.
Further, the surface of described hydraulic power unit is provided with radiator structure.
Further, described radiator structure is that the radiating gill that is evenly arranged in hydraulic power unit surface forms.
Further, described caliper brake is provided with four.
The beneficial effects of the utility model are: owing to being provided with hydraulic power unit and caliper brake, therefore can form double insurance together with magnet stopper, thereby when magnet stopper fault, still can guarantee braking effect, the safety of Lift Mechanism in Power Hoist is improved.Caliper brake can adopt application specific architecture, only in energising, time just can open, and like this, when power failure, caliper brake can brake drum, avoids dangerous and occurs.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is birds-eye view of the present utility model;
Fig. 3 is the schematic diagram of caliper brake;
Hydraulic schematic diagram when Fig. 4 is caliper brake braking;
Fig. 5 is the hydraulic schematic diagram of caliper brake while opening;
Parts, position and numbering in figure: reel 1, motor 2, retarder 3, magnet stopper 4, hydraulic power unit 5, caliper brake 6, braking side plate 7, underframe 8, brake clamp 9, housing 10, piston rod 11, piston 12, belleville spring 13, fluid chamber 14, adjusting screw(rod) 15, push rod 16, setting nut 17.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As depicted in figs. 1 and 2, the utility model comprises reel 1, motor 2, retarder 3 and magnet stopper 4, one end of described reel 1 and retarder 3 are in transmission connection, described motor 2 is connected with retarder 3, described magnet stopper 4 is arranged on motor 2, also comprise hydraulic power unit 5 and caliper brake 6, the other end with respect to retarder 3 of described reel 1 is provided with braking side plate 7, described caliper brake 6 coordinates installation with braking side plate 7, and described caliper brake 6 is connected by hydraulic tubing with hydraulic power unit 5.Caliper brake 6 can adopt initiatively braking or passive braking, the passive brake mode of recommend adoption, can cooperatively interact with magnet stopper 4 like this, forms main-passive compound type braking, thereby in energising or cold situation, all can carry out emergency braking, improve the safety of mechanism.Braking side plate 7 preferably adopts and removably connects, and can change like this after long-term use wearing and tearing.Friction lining is also installed on caliper brake 6, and friction lining adopts removable mounting means.The quantity of caliper brake 6 can be according to actual conditions setting, operated by rotary motion 2-4, by same hydraulic power unit 5, drives.
Passive braking can be in the following ways, as shown in Figure 3, described caliper brake 6 comprises brake clamp 9 and driver train, described driver train comprises housing 10, is arranged on piston rod 11, piston 12, belleville spring 13, spring cavity and fluid chamber 14 in housing 10, described belleville spring 13 and piston 12 are separately positioned on the two ends of piston rod 11, described piston 12 is positioned at fluid chamber 14, and described belleville spring 13 is positioned at spring cavity; One side of described brake clamp 9 matches with described piston rod 11, and opposite side is connected with housing 10; Described belleville spring 13 is that Pre strained state and predetermincd tension direction are identical with brake clamp 9 closing directions; The driving direction of described piston 12 is identical with the direction that brake clamp 9 is opened.Above-mentioned caliper brake 6 is worked as follows, when mechanism normally moves, the hydraulic oil that hydraulic power unit 5 provides enters in fluid chamber 14, makes piston 12 motions, piston rod 11 can be resisted the predetermincd tension motion of belleville spring 13, thereby makes brake clamp 9 in open mode; Once in power-off or while manually closing hydraulic power unit 5, hydraulic power unit 5 no longer provides hydraulic pressure, piston rod 11 moves under the predetermincd tension of belleville spring 13, makes brake clamp 9 in closed condition, realizes thus braking.This structure can adapt to various emergency ratings, still can stop mechanism in the situation that magnet stopper 4 lost efficacy, thus form double insurance, increase the safe reliability of mechanism.
Sensitivity for the ease of adjustable brake pincers 9, as shown in Figure 3, described driver train also comprises adjusting screw(rod) 15 and push rod 16, and described piston rod 11 is tubulose, described push rod 16 is coaxially arranged in piston rod 11 and can axial motion, and described push rod 16 is arranged in piston rod 11 by screw thread; Described push rod 16 one end coordinate to drive brake clamp 9 with a side of brake clamp 9, and the other end contacts cooperation with adjusting screw(rod) 15.Now, rotate the distance that adjusting screw(rod) 15 can be controlled push rod 16 and brake clamp 9, thereby can make the push rod 16 can be sooner or slower driving brake clamp 9.After friction lining attenuation on brake clamp 9, adjustable nearly push rod 16 distances, make the impact of push rod 16 energy friction compensation sheet attenuation.Guarantee the sensitieness of braking.
Concrete, as shown in Figure 3, described spring cavity is positioned at the one end near brake clamp 9, after described fluid chamber 14 is positioned at spring cavity.Certainly, both positions can exchange, and should determine according to actual conditions.
For the ease of adjusting piston 12 positions, as shown in Figure 3, also comprise setting nut 17, described setting nut 17 is arranged on by screw thread one end that piston rod 11 is installed piston 12, and described nut is by the position of rotation adjusting piston 12.
For the ease of heat radiation, the surface of described hydraulic power unit 5 is provided with radiator structure.Mechanism is assemblied on tower machine equilibrium arm, the limited space system of its installation, so the structure design of organization hydraulic pressure pumping plant is very compact, oad is as far as possible little, considers again heat radiation simultaneously, so adopt at the outer wall of fuel tank the version that is evenly arranged radiating gill.Like this, in the process of working long hours, hydraulic power unit 5 can be not overheated yet.
Embodiment
The caliper brake of a certain model, its in the following manner:
A) braking
When electromagnet (DT) dead electricity of hydraulic efficiency pressure system, oil flow path direction is as Fig. 4, and now system pressure is approximately zero, and disk spring 13 is no longer compressed, spring force acts on brake clamp 9 by piston rod 11, adjusting screw(rod) 15 and push rod 16, 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.Lock torque depends on the spring force of belleville spring 13.
B) brake off
When the electromagnet (DT) of hydraulic efficiency pressure system when electric, oily flow path direction is as Fig. 5, now the pressure of hydraulic efficiency pressure system is 140 bar, 140 bar pressure oil are filled with fluid chamber 14, promote to move after piston 12, move after driving look nut 17, by piston rod 11 compression disk springs 13 simultaneously.Adjusting screw(rod) 15 moves after being also pushed to, and push rod 16 is relaxed, and on braking side plate 7, there is no power effect, and lock torque is zero.
Claims (8)
1. Lift Mechanism in Power Hoist, comprise reel (1), motor (2), retarder (3) and magnet stopper (4), one end of described reel (1) and retarder (3) are in transmission connection, described motor (2) is connected with retarder (3), described magnet stopper (4) is arranged on motor (2), it is characterized in that: also comprise hydraulic power unit (5) and caliper brake (6), the other end with respect to retarder (3) of described reel (1) is provided with braking side plate (7), described caliper brake (6) coordinates installation with braking side plate (7), described caliper brake (6) is connected by hydraulic tubing with hydraulic power unit (5).
2. Lift Mechanism in Power Hoist as claimed in claim 1, it is characterized in that: described caliper brake (6) comprises brake clamp (9) and driver train, described driver train comprises housing (10), is arranged on piston rod (11), piston (12), belleville spring (13), spring cavity and fluid chamber (14) in housing (10), described belleville spring (13) and piston (12) are separately positioned on the two ends of piston rod (11), described piston (12) is positioned at fluid chamber (14), and described belleville spring (13) is positioned at spring cavity; One side of described brake clamp (9) matches with described piston rod (11), and opposite side is connected with housing (10); Described belleville spring (13) is that Pre strained state and predetermincd tension direction are identical with brake clamp (9) closing direction; The driving direction of described piston (12) is identical with the direction that brake clamp (9) is opened.
3. Lift Mechanism in Power Hoist as claimed in claim 2, it is characterized in that: described driver train also comprises adjusting screw(rod) (15) and push rod (16), described piston rod (11) is tubulose, described push rod (16) is coaxially arranged in piston rod (11) and can axial motion, and described push rod (16) is arranged in piston rod (11) by screw thread; Described push rod (16) one end coordinates to drive brake clamp (9) with a side of brake clamp (9), and the other end contacts cooperation with adjusting screw(rod) (15).
4. Lift Mechanism in Power Hoist as claimed in claim 2, is characterized in that: described spring cavity is positioned at the one end near brake clamp (9), after described fluid chamber (14) is positioned at spring cavity.
5. Lift Mechanism in Power Hoist as claimed in claim 2, it is characterized in that: also comprise setting nut (17), described setting nut (17) is arranged on by screw thread one end that piston rod (11) is installed piston (12), and described nut is by the position of rotation adjusting piston (12).
6. Lift Mechanism in Power Hoist as claimed in claim 1, is characterized in that: the surface of described hydraulic power unit (5) is provided with radiator structure.
7. Lift Mechanism in Power Hoist as claimed in claim 6, is characterized in that: described radiator structure forms for being evenly arranged in the radiating gill on hydraulic power unit (5) surface.
8. the Lift Mechanism in Power Hoist as described in claim as arbitrary in claim 1 to 7, is characterized in that: described caliper brake (6) is provided with four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420006649.XU CN203715162U (en) | 2014-01-06 | 2014-01-06 | Tower crane hoisting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420006649.XU CN203715162U (en) | 2014-01-06 | 2014-01-06 | Tower crane hoisting mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203715162U true CN203715162U (en) | 2014-07-16 |
Family
ID=51154330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420006649.XU Expired - Lifetime CN203715162U (en) | 2014-01-06 | 2014-01-06 | Tower crane hoisting mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203715162U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103693578A (en) * | 2014-01-06 | 2014-04-02 | 四川建设机械（集团）股份有限公司 | Tower crane lifting mechanism |
| CN112093692A (en) * | 2020-11-12 | 2020-12-18 | 万鑫精工(湖南)股份有限公司 | Tower crane and electromagnetic braking type frame integrated lifting structure thereof |
-
2014
- 2014-01-06 CN CN201420006649.XU patent/CN203715162U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103693578A (en) * | 2014-01-06 | 2014-04-02 | 四川建设机械（集团）股份有限公司 | Tower crane lifting mechanism |
| CN103693578B (en) * | 2014-01-06 | 2017-01-25 | 四川建设机械（集团）股份有限公司 | Tower crane lifting mechanism |
| CN112093692A (en) * | 2020-11-12 | 2020-12-18 | 万鑫精工(湖南)股份有限公司 | Tower crane and electromagnetic braking type frame integrated lifting structure thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140716 |