CN103350963A

CN103350963A - External mounting jib lubbing mechanism

Info

Publication number: CN103350963A
Application number: CN2013103000511A
Authority: CN
Inventors: 程燮丰; 廖宏谊; 徐业海; 汤善杰; 黄德金
Original assignee: GUILIN HETIAN ARCHITECTURE OF MACHINE CO Ltd; Guilin University of Electronic Technology
Current assignee: GUILIN HETIAN ARCHITECTURE OF MACHINE CO Ltd; Guilin University of Electronic Technology
Priority date: 2013-07-17
Filing date: 2013-07-17
Publication date: 2013-10-16

Abstract

The invention discloses an external mounting jib lubbing mechanism for a crane or a tower crane. The external mounting jib lubbing mechanism comprises a coiling block arranged between vertical plates on the left side and the right side of a rack, wherein a motor is arranged on the vertical plate on one side of the rack and coaxial with the coiling block; the motor drives the coiling block through a reducer which is arranged on the vertical plate on the other side of the rack; an input shaft of the reducer is coaxially and fixedly connected with the interior of an input shaft sleeve; the input shaft sleeve is sleeved with a coiling block connecting sleeve coaxially; the input shaft is connected with the coiling block connecting sleeve through a gear transmission pair with a speed reduction transmission ratio; the input shaft is coaxial and connected with a rotating shaft of the motor through a transmission shaft inside the coiling block; the coiling block connecting sleeve is connected with a corresponding end face of the coiling block. According to the external mounting jib lubbing mechanism, the reducer adopts an external mounting type and is placed outside the mechanism. Therefore, the whole reducer can be seen; the maintenance, adjustment and assembling are convenient; the troubleshooting time is shortened; the maintenance time and period are reduced.

Description

The external hanging type luffing mechanism

(1) technical field:

The present invention 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 then is to realize by luffing mechanism by control amplitude variation trolley luffing scope.

Existing luffing mechanism mostly is built-in luffing mechanism, namely is that planetary reduction gear is positioned over reel inside, and the rotating speed of motor is passed to reel through behind the 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 the reel, break down and can not in time find, 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 investigate, the on site maintenance difficulty, maintenance cycle is long.

(3) summary of the invention:

For the weak point of the built-in luffing mechanism of tradition, the purpose of this invention is 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 the frame arranged on left and right sides riser, motor is located on the side frame riser and is coaxial with reel, described motor drives reel by retarder, unlike the prior art be that described retarder is located on the opposite side frame riser, the input shaft of described retarder is coaxial being connected in the input axle sleeve, described input shaft is placed in coaxial package in the reel adapter sleeve, is connected by the gear driving pair with reduction of speed transmitting ratio between described input shaft and the reel adapter sleeve; Described input shaft transmission shaft coaxial with the rotating shaft of motor and by reel inside is connected, and described reel adapter sleeve connects with the corresponding end face of reel.

The present invention partly is positioned over the reel outside to retarder, 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, and 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 the intermediate drive gear system of being connected grade big gear wheel and connecting one-level miniature gears and three grades of big gear wheels, and described one-level miniature gears is connected with input shaft is coaxial, and described three grades of big gear wheels are connected with the reel adapter sleeve is coaxial.

One side riser is provided with the limiting device of control reel rotation amplitude, described limiting device is connected reel by the spacing miniature gears that is meshed with reel terminal pad gear, described spacing miniature gears is connected with the limiting device rotating shaft is coaxial, the coaxial connection of corresponding end face of described reel terminal pad gear and reel.

Advantage of the present invention:

1, the retarder of external hanging type luffing mechanism of the present invention adopts external hanging type and places outside the reel, so whole retarder is visible part, maintenance, adjustment and assembling are all very convenient.

2, investigation is very easy to after the present invention is broken down, 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 present invention can directly change or add lubricating oil, and is convenient, fast, the oil impregnate problem of easier processing retarder.

(4) description of drawings:

Fig. 1 is the structural representation of one embodiment of the present invention.

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 technical scheme of the present invention is described further:

External hanging type luffing mechanism of the present invention mainly is made of arranged on left and right sides riser 1, reel 2, motor 3 and the retarder of frame, described reel 2 is located between the arranged on left and right sides riser 1, and with 14 connections of four pull bars, described retarder and motor 3 are installed on the 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 at left riser 1, the input shaft 6 of retarder, input axle sleeve 4, reel adapter sleeve 5 three's coaxial packages and coaxial with reel 2, wherein said input shaft 6 is connected with input axle sleeve 4 usefulness screws, relatively rotate between described input axle sleeve 4 and the reel adapter sleeve 5, 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; Slow down by the gear driving pair with three grades of reduction of speed transmitting ratios between described input shaft 6 and the reel adapter sleeve 5, 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 coaxial being installed on the input shaft 6, described three grades of big gear wheels 8 are coaxial to be 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 to lie in by spatial axes and to be arranged in the left riser 1 between one-level miniature gears 7 and the 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, are connected with reel terminal pad gear by intermeshing spacing miniature gears 10 between the rotating shaft of described limiting device 9 and the reel 2 and are connected, described spacing miniature gears 10 is connected with the rotating shaft of limiting device 9 is coaxial, the coaxial connection of corresponding end face of described reel terminal pad gear 11 and reel 2, as shown in Figure 1 and Figure 2.

Motor 3 starts, and power is passed to the input shaft 6 of retarder by transmission shaft 13, after transmitting through the deceleration of gear driving pair, is with movable reel 2 to rotate and output speed by reel adapter sleeve 5 outputting powers; The rotation of reel 2 also passes to limiting device 9 simultaneously, by the rotation amplitude of limiting device 9 restriction reels 2.

Claims

1. external hanging type luffing mechanism, comprise and be located at a frame left side, reel (2) in the 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 the opposite side frame riser (1), the input shaft of described retarder (6) is coaxial being connected in input axle sleeve (4), described input axle sleeve (4) is coaxial package in reel adapter sleeve (5), is connected by the gear driving pair with reduction of speed transmitting ratio between described input shaft (6) and the reel adapter sleeve (5); Described input shaft (6) is coaxial with the rotating shaft of motor (3) and is connected by the inner transmission shaft (13) of reel (2), the corresponding end face connection of described reel adapter sleeve (5) and 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) and the intermediate drive gear system (12) of being connected a grade big gear wheel (8) and connecting one-level miniature gears (7) and three grades of big gear wheels (8), described one-level miniature gears (7) and coaxial being connected of input shaft (6), described three grades of big gear wheels (8) and coaxial being connected of 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 control reel (2) rotation amplitude, described limiting device (9) is connected 11 by the spacing miniature gears (10) that is meshed with reel terminal pad gear) connection reel (2), described spacing miniature gears (10) and limiting device (9) the coaxial connection of rotating shaft, the coaxial connection of corresponding end face of described reel terminal pad gear (11) and reel (2).