CN201366434Y - Differential transmission device for steel tube tension reducing mill - Google Patents
Differential transmission device for steel tube tension reducing mill Download PDFInfo
- Publication number
- CN201366434Y CN201366434Y CNU2009201015418U CN200920101541U CN201366434Y CN 201366434 Y CN201366434 Y CN 201366434Y CN U2009201015418 U CNU2009201015418 U CN U2009201015418U CN 200920101541 U CN200920101541 U CN 200920101541U CN 201366434 Y CN201366434 Y CN 201366434Y
- Authority
- CN
- China
- Prior art keywords
- drive
- bevel gear
- gear
- variable
- differential
- 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 - Fee Related
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- Structure Of Transmissions (AREA)
Abstract
Disclosed is a differential transmission device for a steel tube tension reducing mill, belonging to the technical field of steel tube tension reducing mills. The differential transmission device is characterized in that two variable speed motors drive a bevel gear differential mechanism respectively through the transmission of circular gears; then the driving power is transferred to the input shaft of a square frame of the reducing mill through a support frame in the bevel gear differential mechanism; at the same time the two speed variable motors drive, respectively through another set of circular gears, a next bevel gear differential mechanism to drive the input shaft of a next square frame to transmit, then the next and so on, to drive the input shafts of all the square input shafts of the whole reducing mill to transmit to realize the normal production of the steel tube reducing mill.
Description
Technical field:
The utility model belongs to steel pipe stretch-reducing mill technical field, is specifically related to a kind of differential driver of steel pipe stretch reducing unit.
Technical background:
With in the steel pipe stretch reducing unit transmission device of central driving mode the most the mechanism of core be one the cover differential attachment.The general differential attachment that adopts the NGW type in traditional stretch-reducing mill.
Figure 1 shows that NGW type differential attachment transmission sketch, form by several planetary gears c and the bracing frame H of an internal gear b, a centre wheel a (also claiming sun gear), symmetric arrangement.This differential attachment is two input speeds with the rotating speed of internal gear b and sun gear a generally, and the rotating speed of planet carrier H is an output speed.
The shortcoming of NGW type differential attachment maximum is a complex structure, and wherein the shape of planet carrier H is the most complicated, makes also the most difficult.In addition,, claim also by " relocation mechanism " that this just makes mechanism become complicated more because the requirement of several planetary gears to all carrying of symmetric arrangement must add load balancing mechanism.Although the precision of gear and planet carrier can be done very highly, the quality of the design of load balancing mechanism, manufacturing and assembly quality often becomes the key that can NGW type differential attachment run well.
In the actual production, NGW type differential attachment is generally made independent planet bag, in order to processing and management, also can change as soon as possible when a planet contracts out problem, reduces the loss.The insufficient lubrication of planet bag also is a major reason that causes that NGW type differential attachment lost efficacy.The inefficacy of many planetary mechanisms is with lubricated relevant.
NGW type differential attachment can be realized the synthetic of speed.Fundamental formular is:
n
H＝k
an
a+k
bn
b
Concentrate in the steel pipe stretch-reducing mill of differential the rotation speed n of gear a, b
a, n
bGenerally turn to identical, the speed n after synthetic
HDirection also and n
a, n
bDirection identical.Coefficient k
a, k
bBe relevant with the number of teeth of each gear in the differential attachment.Change the rotation speed n of sun gear and internal gear
a, n
bSize and ratio, can adjust the rotation speed n of output shaft
HThe size and the ratio of each between centers rotating speed.
The utility model content:
The utility model purpose provides a kind of differential driver that replaces the steel pipe stretch reducing unit of NGW type differential gear with the spiral bevel gear differential gear.Can overcome the shortcoming that prior art exists effectively.
The utility model is achieved in that it comprises variable-speed motor, gear drive and differential attachment, it is characterized in that driving a curved tooth face cone gear differential attachment by column gear transmission respectively by two variable-speed motors, transmission of power is given the power shaft of reducing mill prescription frame by the bracing frame in the cambered surface bevel gear differential mechanism, simultaneously, rotate by the power shaft that another group column gear transmission has driven next bevel gear differential mechanism and methods, rack respectively by above-mentioned two variable-speed motors, and the like, each the bevel gear differential mechanism and the methods, rack power shaft that can drive in the whole tube reducing unit rotate, and make the pipe straightener group carry out ordinary production.
The utility model advantage and good effect are:
1) owing to the spiral bevel gear processing technology maturation that adopts, its intensity and precision and reliability greatly improve than NGW type differential attachment.
2) the bevel gear differential gear can be controlled the bevel gear gap by several adjustment packing rings, assembles simple and reliablely, does not need the floating installation in the NGW type differential attachment to realize all carrying fully, and entire mechanism is greatly simplified.
3) lubricating system of bevel gear box of tricks is the same with general reduction gear box mechanism, adopts drip lubrication can guarantee the good lubrication of entire mechanism.
Description of drawings:
Fig. 1 is a prior art NGW differential attachment schematic diagram.
Fig. 2 spiral bevel gear differential attachment schematic diagram.
Fig. 3 is the utility model transmission schematic diagram.
Among the figure: a---sun gear, b---internal gear, c---planetary gear, H, H '---bracing frame,
Z
1, Z
2, Z
3, Z
4---bevel gear, n
H, n
H'---the bracing frame rotating speed,
n
1, n
2, n
3, n
4---represent Z respectively
1, Z
2, Z
3, Z
4Rotating speed, D
1, D
2---variable-speed motor
R
1, R
2---the power shaft of differential gear, C
1, C
2---the output shaft of differential gear,
J
1.1, J
1.2, J
2.1, J
2.2, J
3.1, J
3.2, J
4.1, J
4.2---roller gear, I, II ... N---differential attachment, F
1, F
2Fn---methods, rack.
The specific embodiment:
As shown in Figure 3, variable-speed motor D
1By power shaft R
1With roller gear J
1.1And J
1.2Drive the bevel gear Z in the spiral bevel gear differential attachment
1And Z
2Rotate variable-speed motor D
2By power shaft R
2With roller gear J
2.1And J
2.2Drive the bevel gear Z in the spiral bevel gear differential attachment
3And Z
4Rotate, work as Z
1With Z
3When the number of teeth equates, the bracing frame H ' rotating speed in the differential attachment then
, n in the formula
1Be Z
1Rotating speed, n
3Be Z
3Rotating speed, change n
1And n
3Size and ratio, can change n
H' size, n
H' also be differential attachment output shaft C
1Rotating speed, also be I platform methods, rack F
1Input shaft rotational speed.While variable-speed motor D
1Also by roller gear J
3.1And J
3.2, and D
2Pass through J
4.1And J
4.2Drive II platform methods, rack F
2Power shaft rotate, and the like can drive whole each methods, rack of unit power shaft rotate, implement manufacturing technique requirent.
Claims (1)
1, a kind of differential driver of steel pipe stretch reducing unit, it comprises variable-speed motor, gear drive and differential attachment, it is characterized in that variable-speed motor (D
1) by power shaft (R
1) and roller gear (J
1.1) and (J
1.2) drive the bevel gear (Z in the bevel gear differential mechanism
1), (Z
2) rotate variable-speed motor (D
2) by power shaft (R
2) and roller gear (J
2.1), (J
2.2) drive the bevel gear (Z in the bevel gear differential mechanism
3), (Z
4) rotate, work as Z
1With Z
3When the number of teeth equates, the rotating speed of the bracing frame in the differential attachment (H ') then
N in the formula
1Be Z
1Rotating speed, n
3Be Z
3Rotating speed, the turning cylinder of bracing frame (H ') promptly is the output shaft (C of box of tricks
1), with methods, rack (F
1) power shaft is connected, variable-speed motor (D simultaneously
1) also by roller gear (J
3.1), (J
3.2) and variable speed electric motors, particularly (D
2) by roller gear (J
4.1) and (J
4.2) drive (II) platform methods, rack (F
2) power shaft rotate, and the like drive whole sizing unit each side frame power shaft rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201015418U CN201366434Y (en) | 2009-02-13 | 2009-02-13 | Differential transmission device for steel tube tension reducing mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201015418U CN201366434Y (en) | 2009-02-13 | 2009-02-13 | Differential transmission device for steel tube tension reducing mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201366434Y true CN201366434Y (en) | 2009-12-23 |
Family
ID=41485335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009201015418U Expired - Fee Related CN201366434Y (en) | 2009-02-13 | 2009-02-13 | Differential transmission device for steel tube tension reducing mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201366434Y (en) |
-
2009
- 2009-02-13 CN CNU2009201015418U patent/CN201366434Y/en not_active Expired - Fee Related
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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: 20091223 Termination date: 20150213 |
|
| EXPY | Termination of patent right or utility model |