CN201530690U - Large-tonnage tower crane hoisting mechanism - Google Patents
Large-tonnage tower crane hoisting mechanism Download PDFInfo
- Publication number
- CN201530690U CN201530690U CN200920311134XU CN200920311134U CN201530690U CN 201530690 U CN201530690 U CN 201530690U CN 200920311134X U CN200920311134X U CN 200920311134XU CN 200920311134 U CN200920311134 U CN 200920311134U CN 201530690 U CN201530690 U CN 201530690U
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- tower crane
- tonnage
- motor
- lifting mechanism
- lifting
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Abstract
The utility model discloses a large-tonnage tower crane hoisting mechanism used in a building site, which has the characteristic of convenient transportation and installation. The large-tonnage tower crane hoisting mechanism comprises a hoisting motor and a winding drum, wherein the winding drum is connected with the hoisting motor by a speed reducing mechanism in a transmission manner, and the speed reducing mechanism adopts a planet wheel transmission mechanism. As the planet wheel transmission mechanism is served as the speed reducing mechanism, the large-tonnage tower crane hoisting mechanism has the advantages of compact structure, small volume and mass, large transmission ratio, high efficiency, stable running, low noise and the like; and therefore, under the condition of very little volume and weight, the large-tonnage tower crane hoisting mechanism has the characteristic of large transmission ratio, is convenient for transportation and installation, and is especially suitable for the promotion and use on tower cranes.
Description
Technical field
The utility model relates to a kind of weight-lifting equipment, is specifically related to a kind of large-tonnage lifting mechanism of tower crane that uses in the building ground.
Background technology
At present, the lifting mechanism of large-tonnage tower crane generally comprises DC motor, angular drive mechanism and reel, lay winding wire ropes on reel.During lifting mechanism work, drive the contraction that reel work realizes steel rope, thereby realize weight is sling by DC motor.But existing lifting mechanism is the DC speed regulation lifting mechanism, this class mechanism adopts traditional cylinder gear speed reducer, this kind retarder transmitting ratio is little, simultaneously, and Heavy Weight, because lifting mechanism is installed on the equilibrium arm of tower machine, being not only to mechanism itself increases cost greatly, brings very big difficulty for the transportation and the installation of tower machine, and, strengthened the jacking load of tower crane, the safety of tower crane has been had certain influence.And can only select low-speed motor for use, belong to DC speed regulation.At long phase of history very in period, the speed governing transmission field is monopolized by dc motor speed-regulating system basically, though DC motor has the advantage of good speed adjustment features, but some intrinsic shortcomings that are difficult to overcome are arranged also, it mainly is the drawback that the mechanical switching device brings, its shortcoming is: maintenance load is big, the accident rate height; The upper limit of capacity, voltage, electric current and rotating speed all is subjected to the restriction of the condition of commutating, and can't use in some high-capacity speed governing fields; And this kind lifting mechanism volume is big, Heavy Weight, and the high-power low-speed current of electric is big, brings certain difficulty to electrical control.
The utility model content
The technical matters that the utility model solved provides a kind of large-tonnage lifting mechanism of tower crane of transporting and installing be convenient to.
The technical scheme that its technical matters that solves the utility model adopts is: the large-tonnage lifting mechanism of tower crane, comprise lifting motor and the reel that is in transmission connection by speed reduction gearing and lifting motor, and described speed reduction gearing adopts the satellite gear transmission device.
Further be that the satellite gear transmission device is arranged in the reel.
As optimized technical scheme, described satellite gear transmission device is the secondary differential planetary gear train.
Further be that described lifting motor adopts the frequency changing AC speed changing electrical motor.
Further be, the axis alternative arrangement of the axis of lifting motor and satellite gear transmission device, being expert at is connected with angle transmission mechanism between star wheels transport mechanism and the lifting motor.
Further be, described angle transmission mechanism comprises intermeshing first finishing bevel gear cuter and middle tap gear, and first finishing bevel gear cuter and middle tap gear are deceleration transmission.
Further be that the transmission line between angle transmission mechanism and the lifting motor is provided with magnet stopper; Be provided with hydraulic brake at the reel cylindrical.
The beneficial effects of the utility model are: because with the speed reduction gearing of satellite gear transmission device as large-tonnage lifting mechanism of tower crane of the present utility model, it has, and compact conformation, volume and quality are little, transmitting ratio is big, efficient is high, running is steady, low noise advantages; Therefore, under the situation of very little volume and weight, have the bigger characteristics of transmitting ratio, be convenient to transportation and install, be particluarly suitable for promoting the use of on the tower crane.
Description of drawings
Fig. 1 is a transmission principle constructional drawing of the present utility model.
Be labeled as among the figure: lifting motor 1, reel 2, satellite gear transmission device 3, first finishing bevel gear cuter 4, middle tap gear 5, magnet stopper 6, hydraulic brake 7.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described further.
As shown in Figure 1, large-tonnage lifting mechanism of tower crane of the present utility model comprises lifting motor 1 and the reel 2 that is in transmission connection by speed reduction gearing and lifting motor 1, and described speed reduction gearing adopts satellite gear transmission device 3.Because with the speed reduction gearing of satellite gear transmission device 3 as large-tonnage lifting mechanism of tower crane of the present utility model, it has, and compact conformation, volume and quality are little, transmitting ratio is big, efficient is high, running is steady, low noise advantages; Therefore, under the situation of very little volume and weight, have the bigger characteristics of transmitting ratio, be convenient to transportation and install.For better reducing the volume of lifting mechanism, satellite gear transmission device 3 is arranged in the reel 2.For tower crane, need to change the building site in the use, it is particularly important that the transportation of lifting mechanism just seems.And satellite gear transmission device 3 is arranged in the reel 2, just make reel 2 and satellite gear transmission device 3 form integrative-structure, be convenient to simultaneously to the transportation of reel 2 with satellite gear transmission device 3.Be the better transmission performance that improves satellite gear transmission device 3, described satellite gear transmission device 3 is the secondary differential planetary gear train.Adopt a plurality of satellite gears transmitted load simultaneously, can make power dividing, better improve its transmission efficiency.
For ease of the speed governing of large-tonnage lifting mechanism of tower crane of the present utility model, described lifting motor 1 adopts the frequency changing AC speed changing electrical motor.The frequency changing AC speed changing electric tools has infinite speed variation, and speed governing is level and smooth, do not have and impact, and the upper limit of capacity, voltage, electric current and rotating speed is restricted unlike DC motor; It is simple in structure, and cost is low; Sturdy and durable, accident rate is low, easy maintenance.Development along with the modern AC converter technique, by Alternating Current Governor System control the lifting mechanism motor startup, brake, stop, reversible operation and speed governing operation, make lifting mechanism realize quiet run, improve operating efficiency, improve the overload operation, eliminate the impact of startup and glancing impact.Simultaneity factor can also realize excess current, over voltage, under-voltage and input open-phase protection.As adopt four utmost point frequency conversion definite-purpose motors of interchange, and it is with respect to the electrical motor with power, four-stage motor speed height, and in light weight, the reduction of system speed is realized that by retarder system's total weight is reduced thus.Frequency conversion definite-purpose motor (the heavy 1155kg of the frequency conversion definite-purpose motor of four utmost point 200kW as four utmost point 200kW, it only is 300kg that the deceleration that increases is thought highly of, and 200kW, the rated speed of rotation heavy 3000kg that is the 480r/min speed adjustable DC motor, and the electrical motor of the DC speed regulation lifting mechanism that the maximum lift heavy of single rope that uses at present is 16 tons is 480r/min, heavy 5000kg as 280kW, rated speed of rotation).
In the above embodiment, the axis of lifting motor 1 can with the axis horizontal setting of reel 2, but the layout that is unfavorable for lifting motor 1, therefore, the axis alternative arrangement of the axis of lifting motor 1 and satellite gear transmission device 3, being expert at is connected with angle transmission mechanism between star wheels transport mechanism 3 and the lifting motor 1.Like this, lifting motor 1 vertically can be arranged on the king-post of tower crane.In Fig. 1, the axis normal of the axis of lifting motor 1 and satellite gear transmission device 3 is arranged.Angle transmission mechanism in this embodiment has been realized the alternative arrangement of the axis of the axis of lifting motor 1 and satellite gear transmission device 3, it can adopt the worm and gear transmission to realize, as optimal way, described angle transmission mechanism comprises that intermeshing first finishing bevel gear cuter 4 and middle tap gear 5, the first finishing bevel gear cuters 4 are deceleration transmission with middle tap gear 5.Adopt finishing bevel gear cuter to realize the axis of lifting motor 1 and the axis staggered transmission of satellite gear transmission device 3, can make simple in structure.
Because mechanism's load is big, to the security requirement height, so the transmission line between angle transmission mechanism and the lifting motor 1 is provided with magnet stopper 6; Be provided with hydraulic brake 7 at reel 2 cylindricals.Realize speed end and the double insurance of low speed end braking.Speed end adopts magnet stopper 6 brakings, mechanism's good manufacturability, and cost of manufacture is low.The low speed end adopts hydraulic brake 7 brakings, is the braking of reel 2 terminals, to guarantee messenger chain braking is not had influence, and mechanism is safe and reliable.
Claims (7)
1. the large-tonnage lifting mechanism of tower crane comprises lifting motor (1) and the reel (2) that is in transmission connection by speed reduction gearing and lifting motor (1), it is characterized in that: described speed reduction gearing adopts satellite gear transmission device (3).
2. large-tonnage lifting mechanism of tower crane as claimed in claim 1 is characterized in that: satellite gear transmission device (3) is arranged in the reel (2).
3. large-tonnage lifting mechanism of tower crane as claimed in claim 2 is characterized in that: described satellite gear transmission device (3) is the secondary differential planetary gear train.
4. as claim 1,2 or 3 described large-tonnage lifting mechanism of tower crane, it is characterized in that: described lifting motor (1) adopts the frequency changing AC speed changing electrical motor.
5. large-tonnage lifting mechanism of tower crane as claimed in claim 4, it is characterized in that: the axis alternative arrangement of the axis of lifting motor (1) and satellite gear transmission device (3) is connected with angle transmission mechanism between star wheels transport mechanism of being expert at (3) and the lifting motor (1).
6. large-tonnage lifting mechanism of tower crane as claimed in claim 5 is characterized in that: described angle transmission mechanism comprises intermeshing first finishing bevel gear cuter (4) and middle tap gear (5), and first finishing bevel gear cuter (4) is a deceleration transmission with middle tap gear (5).
7. large-tonnage lifting mechanism of tower crane as claimed in claim 6 is characterized in that: the transmission line between angle transmission mechanism and the lifting motor (1) is provided with magnet stopper (6); Be provided with hydraulic brake (7) at reel (2) cylindrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920311134XU CN201530690U (en) | 2009-09-23 | 2009-09-23 | Large-tonnage tower crane hoisting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920311134XU CN201530690U (en) | 2009-09-23 | 2009-09-23 | Large-tonnage tower crane hoisting mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201530690U true CN201530690U (en) | 2010-07-21 |
Family
ID=42526095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920311134XU Expired - Lifetime CN201530690U (en) | 2009-09-23 | 2009-09-23 | Large-tonnage tower crane hoisting mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201530690U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102897682A (en) * | 2012-10-24 | 2013-01-30 | 中船华南船舶机械有限公司 | Gear transmission case |
| CN102927208A (en) * | 2012-11-20 | 2013-02-13 | 中传重型装备有限公司 | Cutting reducer for continuous miner |
| 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 |
-
2009
- 2009-09-23 CN CN200920311134XU patent/CN201530690U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102897682A (en) * | 2012-10-24 | 2013-01-30 | 中船华南船舶机械有限公司 | Gear transmission case |
| CN102927208A (en) * | 2012-11-20 | 2013-02-13 | 中传重型装备有限公司 | Cutting reducer for continuous miner |
| 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 |
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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 |
Granted publication date: 20100721 |
|
| CX01 | Expiry of patent term |