KR830001280B1 - Uniform Dynamic Drive in Dredger - Google Patents

Abstract

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Description

Uniform Dynamic Drive in Dredger

1 is a perspective view of a substantially uniform dynamic power transmission device installed in a dredger when the three axes 13, 24 and 15 are in line.

2 is a cross-sectional view in the direction of the arrow of II-II of FIG.

3 is a transmission diagram shown in FIGS. 1 and 2 with the driven shaft 15 tilted.

4 is a modified form similar to that of FIG. 1, but not strictly equivalent to an affective device.

FIG. 5 is a diagram similar to FIG. 3 but with respect to the apparatus in FIG.

The present invention relates to a uniform dynamic transmission device installed in a dredger having both accurate uniform and roughly equivalent dynamic conditions. Both cases are referred to herein as being substantially isodynamic.

In almost all cases, a substantially equal dynamic transmission is provided between two axes whose two axes are not coaxial and both axes have a predetermined fixed position in space.

This is especially true when the two axes are parallel but they are offset relative to each other or when the two axes converge on a line with each other. In both cases, a pair of universal joints can be used to meet even dynamic conditions without difficulty. On the other hand, for example, in the case where the driven shaft, which is one of the two axes, has a non-uniform and variable inclination with respect to the drive shaft, which is the other axis, it is possible to obtain a uniform dynamic transmission device that maintains an equal dynamic state between the two axes even under excellent conditions. It was impossible

In many cases, it is desirable that the two axes, one of which is the drive shaft and the other being the driven shaft, exhibit several inclinations with respect to one another, so that during the operation of any inclination at a predetermined limit, an even dynamic condition can be obtained.

For example, this is the case with a dredger with a float and a buoy that can be tilted at various angles to the float, in which case a rotatable pump installed at the end of the float will operate as a motor installed in the float. There is a need.

Any rotation of the shaft needs to be rotated as regularly as possible to avoid deformation vibrations, wear and damage to the driven components.

The present invention relates to an isodynamic transmission between two axes, one with a fixed position and the other with several inclinations. This isodynamic transmission is simple and robust and efficient.

According to the present invention, a substantially uniform dynamic transmission device between a first axis installed on a fixed first support and a second axis mounted on a second support whose position can be changed and having various inclinations with respect to the first axis, among these two axes. One is a drive shaft and the other is a driven shaft and is connected by a pair of universal joints of a first axis connected by a connecting part fixedly pivotable to a variable length, and connected by a second connecting part fixedly pivotable to a variable length. It is characterized in that it has a fixed length intermediate shaft installed in the middle of the second pair of universal joints of the second axis and the electrical two pair of universal joints.

In this case, the electric intermediate shaft is installed on the third support provided to rotate the pins installed on the first support, and the device can always adjust the position of the intermediate shaft in accordance with the position of the second shaft which varies with various inclinations. have. In particular, the pivoting axis of the third support equipped with the intermediate axis is substantially equidistant between the two universal joints of the first pair of universal joints when the axes of electrical collection are lined up.

This structure makes the transmission between the first and intermediate axes equally dynamic. Equal dynamic conditions between the intermediate axis and the second side should also be clearly considered. These conditions can be considered precisely or roughly depending on the deployment plan and operating requirements.

In a device where the equilibrium dynamics of the intermediate axis and the second axis are met exactly, when the three axes are in line, the three axes are in line with the same distance from the two-way joint at the outer end of the two pairs of universal joints. The second support is arranged to pivot about one axis arranged linearly. On the other hand, the connecting device between the third support and the third support includes a cam device in the form of a type that is rotatably connected to the second support and slides on the seat of the third support. do. When all axes are in line, the axis of the type is opposite in diameter with respect to the pivot axis of the third support relative to the pivot axis of the second support.

In the modified device the uniform dynamic conditions are approximate and the second support is arranged to rotate around an axis which is not located in a straight line in the three axes but offset relative to the line. At this time, the reverse fastening device between the second support and the third support is a simple connecting rod.

The transmission device according to the present invention is characterized by a convenient and efficient structure in any case.

According to the accompanying drawings, the present invention will be described in detail.

First, the description of FIGS. 1-3 will be described first. These three figures are applied to the dredge of the present invention, the pour 10 is installed on the floating body 11 can be tilted around the pivot pin 12 fixed to the floating body (11).

The homogeneous dynamics of the present invention, which is shown in the examples of FIGS. 1-3, is on the one hand the pour shaft 10 on the other hand and the drive shaft 13 connected to the output of the motor 14 mounted on the floating body 11. And positioned between driven shafts 15 connected to the operating shafts 17 via reduction gears 16.

The drive shaft 13 constitutes a first axis mounted on the floating body 11, which is a first support having a fixed position, while the driven shaft 15 has a variable inclination with respect to the drive shaft 13, which is the first axis. Comprising a second axis mounted on, the buoy 10 forms a second support whose position can be changed.

The transmission has the first pair of universal joints 18 and 19 connected to the drive shaft 13. The pair of universal joints 18, 19 are connected by a first connecting portion 20, which can be pivotally fixed and can vary in length. The first connecting portion 20 is composed of two shafts connected to each other to be active.

The transmission also has a second pair of universal joints 21, 22 associated with the driven shaft 15, which is the second axis. These universal joints 21 and 22 are connected by a second connecting portion 23 which can be pivotally fixed and whose length can be varied. Like the first connecting portion 20, the second connecting portion 23 is composed of two shafts connected to each other to be active.

The transmission also has an intermediate shaft 24 (third axis) of fixed length between two universal joints 19 and 21. This intermediate shaft 24 is attached to the third support body 25 which can be rotated around the pivot pin 26 provided in the floating body 11. To do this, the third support 25 has two side plates 27, one on each side of the components 13, 18, 20, 24, 21, 23, 22 and 15. .

The pivot pin 26 of the third support 25 is equidistant from the axis of the universal joint 18, 19 when the three axes 13, 24, 15 are in line as shown in FIG. Located.

In this way, the axis of the universal joint 19 draws an arc of a circle passing through the axis of the universal joint 18 around the pivot pin 26 during movement.

A coupling device is provided between the second support and the third support 25 including the buoy 10 so that the position of the intermediate shaft 24 is at any moment at the position of the driven shaft 15 which is the second variable inclined shaft. Depends.

In FIGS. 1-3 where the equal dynamic conditions are exactly met, the coupling device between the second support or pour 10 and the third support 25 comprises a cam means 29.

This cam device 29 has, for example, a typeface 30 which is arranged to rotate on a pin 31 fixed to a head portion 32 installed on the pour 10. This grandchild 30 slides on the slide 33 provided in each side plate 27.

The pivot pin 12 of the pour 10 is on the line of the three axes 13, 24, 15 and the pivot pin 12 when the three axes 13, 24, 15 are in line. ) Are evenly spaced from the two universal joints 18 and 22 at the outer ends.

The pins 31 of the type 30 when the three shafts 13, 24 and 15 are in line, pivot pins 26 of the third support 25 with respect to the pivot pins 12 of the pour 10. It is located on the opposite side of the diameter of the pin (31) of the type 30 draws an arc of a circle passing through the pivot pin (26) around the pivot pin (12) during operation.

Due to the structure described so far, it is possible to obtain accurate uniform mechanical transmission conditions as can be seen from the uniformity of each A in FIG. 3.

Here, it can be seen that the amount of change between the drive shaft 13 as the first axis and the driven shaft 15 as the second axis is four times the amount of change A of the universal joint 18. Furthermore, the three axles 13, 24 and 15 can be driven over each side of the straight line.

Referring to FIGS. 4 and 5, the structure is similar to that of FIGS. 1-3 but here the homodynamic transmission conditions are not exactly met and are approximately satisfied beyond the exact isodynamic position indicated by the large dashed line in FIG. .

In this case, the coupling device between the second support or the pour 10 and the third support 25 does not have a type and slide structure, and one end 41 of the simple connection 40 is a pour ( 10) is rotatably connected and the other end portion 42 is rotatably connected to the side plate 27 of the third support (25). This causes the pivot pin 12 'of the pour 10 to be positioned offset from the line as in FIGS. 4 and 5 without having to be on the line of the three axes 13, 24, 15. It is preferable.

The structure shown in FIGS. 4 and 5 is simple and fulfills the conditions of homogeneous dynamics.

Claims (1)

Equal dynamic transmission device positioned between the drive shaft 13 installed on the fixed body 11 and the driven shaft 15 having a plurality of inclinations with respect to the drive shaft 13, which is installed on the drive shaft 13 installed at the fixed body 11. In this case, one of these two axes is the drive shaft 13 and the other is the driven shaft 15, which has universal joints 18 and 19 associated with the drive shaft 13 and the universal joints 18 and 19 are of length. The two universal joints 21 and 22, which are connected by the first connector 20, which is variable and rotatably fixed, and which are connected to the driven shaft 15, can be changed in length and rotated to fix the second connector ( 23 has an intermediate shaft 24 positioned between the two pairs of universal joints 18, 19, and 21 and 22 in a fixed length, which intermediate shaft 24 is The position of the intermediate shaft 24 even if it is held in association with the driven shaft 15 supported by the third support 25 provided to rotate the drive shaft 13 so as to rotate. A uniform dynamic power unit installed in a dredger with an adjusting device such that the universal joints (18), (19), (21), and (22) are in a position having a substantially equal mechanical relationship.

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