CN203373034U - External-hung type amplitude-changing mechanism - Google Patents
External-hung type amplitude-changing mechanism Download PDFInfo
- Publication number
- CN203373034U CN203373034U CN201320425226.7U CN201320425226U CN203373034U CN 203373034 U CN203373034 U CN 203373034U CN 201320425226 U CN201320425226 U CN 201320425226U CN 203373034 U CN203373034 U CN 203373034U
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- reel
- input shaft
- coaxially
- motor
- miniature gears
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Abstract
The utility model discloses an external-hung type amplitude-changing mechanism for a crane or a tower crane. The external-hung type amplitude-changing mechanism comprises a winding drum, wherein the winding drum is arranged between vertical plates at the left side and the right side of a rack; a motor is arranged on the vertical plate at one side of the rack and is coaxial to the winding drum and drives the winding drum by a speed reducer; the speed reducer is arranged on the vertical plate at the other side of the rack; an input shaft of the speed reducer is coaxially and fixedly connected in an input shaft sleeve which is coaxially sheathed in a winding-drum connecting sleeve; the input shaft and the winding-drum connecting sleeve are connected by a gear transmission pair with the speed-reducing transmission ratio; the input shaft is coaxial to a rotary shaft of the motor and is connected with the rotary shaft of the motor by a transmission shaft in the winding drum; the winding-drum connecting sleeve is connected with the corresponding end surface of the winding drum. The external-hung type amplitude-changing mechanism disclosed by the utility model has the advantages that the speed reducer is arranged outside the mechanism by adopting an external-hung manner, so that the whole speed reducer is a visible part, the maintenance, the adjustment and the assembly are very convenient, the fault finding time is shortened and the maintenance time and the maintenance period are reduced.
Description
(1) technical field:
The utility model relates to hoisting crane or tower crane inner structure, particularly a kind of external hanging type luffing mechanism.
(2) background technology:
The operating range of hoisting crane or tower crane has several modes, and a kind of is the elevation angle by crane arm, and a kind of is that this structure is to realize by luffing mechanism by controlling amplitude variation trolley luffing scope.
Existing luffing mechanism is mostly built-in luffing mechanism, is that planetary reduction gear is positioned over to reel inside, and the rotating speed of motor is passed to reel after planetary reduction gear, and reel is exported with design speed, thereby reaches the desired luffing linear velocity of luffing mechanism.
Because planetary reduction gear is built in reel, break down and can not find in time, exist and use hidden danger; And the planetary reduction gear complex structure, the processing and manufacturing difficulty, cost is high.
Need to remove a large amount of parts after built-in luffing mechanism breaks down and investigated, the on site maintenance difficulty, maintenance cycle is long.
(3) utility model content:
For the weak point of the built-in luffing mechanism of tradition, the purpose of this utility model has been to provide a kind of external hanging type luffing mechanism of on-the-spot quick diagnosis maintenance.
Can realize the external hanging type luffing mechanism of above-mentioned purpose, comprise the reel of being located in frame arranged on left and right sides riser, motor is located on a side frame riser and is coaxial with reel, described motor drives reel by retarder, described retarder is located on opposite side frame riser unlike the prior art, the input shaft of described retarder coaxially is connected in the input axle sleeve, described input shaft is placed in coaxial package in the reel adapter sleeve, between described input shaft and reel adapter sleeve, by the gear driving pair with reduction of speed transmitting ratio, is connected; Coaxial and the transmission shaft by reel inside of described input shaft and the rotating shaft of motor is connected, the corresponding end face connection of described reel adapter sleeve and reel.
The utility model is that retarder partly is positioned over to the reel outside, the rotation of motor is delivered to the transmission gear of retarder by input shaft, reel adapter sleeve by retarder passes to reel to motion again, reel is exported with design speed, thereby reaches the desired luffing linear velocity of luffing mechanism.
Described gear driving pair comprises one-level miniature gears and three grades of big gear wheels and is connected the one-level miniature gears and the intermediate drive gear of three grades of big gear wheels system, and described one-level miniature gears and input shaft coaxially are connected, and described three grades of big gear wheels and reel adapter sleeve coaxially are connected.
One side riser is provided with the limiting device of controlling the reel rotation amplitude, described limiting device is connected reel by the spacing miniature gears be meshed with reel terminal pad gear, described spacing miniature gears coaxially is connected with the limiting device rotating shaft, and described reel terminal pad gear coaxially connects with the corresponding end face of reel.
Advantage of the present utility model:
1, the retarder of the utility model external hanging type luffing mechanism adopts external hanging type and is placed in outside reel, therefore whole retarder is visible part, maintenance, adjustment and assembling are all very convenient.
2, after the utility model breaks down, investigation is very easy to, and only needs to remove the large lid of retarder, and internal mechanism just covers all at one glance, and has reduced trouble shooting time, has reduced maintenance time and cycle.
3, the utility model can directly be changed or add lubricating oil, convenient, fast, more easily processes the oil impregnate problem of retarder.
(4) accompanying drawing explanation:
Fig. 1 is the structural representation of a kind of embodiment of the utility model.
Fig. 2 is that A in Fig. 1 embodiment is to view.
Figure number sign: 1, riser; 2, reel; 3, motor; 4, input axle sleeve; 5, reel adapter sleeve; 6, input shaft; 7, one-level miniature gears; 8, three grades of big gear wheels; 9, limiting device; 10, spacing miniature gears; 11, reel terminal pad gear; 12, intermediate drive gear system; 13, transmission shaft; 14, pull bar.
(5) specific embodiment:
Below in conjunction with accompanying drawing, the technical solution of the utility model is described further:
The utility model external hanging type luffing mechanism mainly consists of arranged on left and right sides riser 1, reel 2, motor 3 and the retarder of frame, described reel 2 is located between arranged on left and right sides riser 1, and connect with four pull bars 14, described retarder and motor 3 are installed on left and right riser 1 in reel 2 both sides, the rotating shaft of described motor 3 is coaxial with reel 2, as shown in Figure 1 and Figure 2.
The transmission gear of described retarder is installed on left riser 1, the input shaft 6 of retarder, input axle sleeve 4, reel adapter sleeve 5 three's coaxial packages coaxial with reel 2, wherein said input shaft 6 is connected with input axle sleeve 4 use screws, between described input axle sleeve 4 and reel adapter sleeve 5, relatively rotate, input shaft 6 is connected (input shaft 6 and transmission shaft 13 can be designed to a bearing) with the rotating shaft of motor 3 by the transmission shaft 13 that is built in reel 2; Between described input shaft 6 and reel adapter sleeve 5, by the gear driving pair with three grades of reduction of speed transmitting ratios, slow down, as shown in Figure 1 and Figure 2.
Described gear driving pair comprises that input one-level miniature gears 7 and three grades of big gear wheels 8 and two groups of intermediate drive gears are 12, described one-level miniature gears 7 coaxially is installed on input shaft 6, described three grades of big gear wheels 8 coaxially are connected with reel adapter sleeve 5 keys, reel adapter sleeve 5 connects the corresponding outer end of reel 2 by side plate, described two groups of intermediate drive gears are 12 by spatial axes, to lie in left riser 1 and be arranged between one-level miniature gears 7 and three grades of big gear wheels 8, as shown in Figure 1 and Figure 2.
The right riser 1 of described motor 3 one sides is installed limiting device 9, between the rotating shaft of described limiting device 9 and reel 2, by intermeshing spacing miniature gears 10, with reel terminal pad gear 11, be connected, described spacing miniature gears 10 coaxially is connected with the rotating shaft of limiting device 9, described reel terminal pad gear 11 coaxially connects with the corresponding end face of reel 2, as shown in Figure 1 and Figure 2.
Claims (3)
1. external hanging type luffing mechanism, comprise and be located at a frame left side, reel (2) in right both sides risers (1), it is upper and coaxial with reel (2) that motor (3) is located at a side frame riser (1), described motor (3) drives reel (2) by retarder, it is characterized in that: described retarder is located on opposite side frame riser (1), the input shaft of described retarder (6) coaxially is connected in input axle sleeve (4), described input axle sleeve (4) is coaxial package in reel adapter sleeve (5), between described input shaft (6) and reel adapter sleeve (5), by the gear driving pair with reduction of speed transmitting ratio, be connected, described input shaft (6) is coaxial with the rotating shaft of motor (3) and inner transmission shaft (13) is connected by reel (2), and described reel adapter sleeve (5) connects with the corresponding end face of reel (2).
2. external hanging type luffing mechanism according to claim 1, it is characterized in that: described gear driving pair comprises one-level miniature gears (7) with three grades of big gear wheels (8) and is connected one-level miniature gears (7) and the intermediate drive gear of three grades of big gear wheels (8) system (12), described one-level miniature gears (7) coaxially is connected with input shaft (6), and described three grades of big gear wheels (8) coaxially are connected with reel adapter sleeve (5).
3. external hanging type luffing mechanism according to claim 1 and 2, it is characterized in that: a side riser (1) is provided with the limiting device (9) of controlling reel (2) rotation amplitude, described limiting device (9) is connected reel (2) by the spacing miniature gears (10) be meshed with reel terminal pad gear (11), described spacing miniature gears (10) coaxially is connected with limiting device (9) rotating shaft, and described reel terminal pad gear (11) coaxially connects with the corresponding end face of reel (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320425226.7U CN203373034U (en) | 2013-07-17 | 2013-07-17 | External-hung type amplitude-changing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320425226.7U CN203373034U (en) | 2013-07-17 | 2013-07-17 | External-hung type amplitude-changing mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203373034U true CN203373034U (en) | 2014-01-01 |
Family
ID=49835581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320425226.7U Expired - Fee Related CN203373034U (en) | 2013-07-17 | 2013-07-17 | External-hung type amplitude-changing mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203373034U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103350963A (en) * | 2013-07-17 | 2013-10-16 | 桂林禾田建筑机械有限公司 | External mounting jib lubbing mechanism |
-
2013
- 2013-07-17 CN CN201320425226.7U patent/CN203373034U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103350963A (en) * | 2013-07-17 | 2013-10-16 | 桂林禾田建筑机械有限公司 | External mounting jib lubbing mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140101 Termination date: 20180717 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |