CN107377628B - Cold pipe mill transmission device with mass balance mechanism - Google Patents
Cold pipe mill transmission device with mass balance mechanism Download PDFInfo
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- CN107377628B CN107377628B CN201710712713.4A CN201710712713A CN107377628B CN 107377628 B CN107377628 B CN 107377628B CN 201710712713 A CN201710712713 A CN 201710712713A CN 107377628 B CN107377628 B CN 107377628B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B35/00—Drives for metal-rolling mills, e.g. hydraulic drives
- B21B35/12—Toothed-wheel gearings specially adapted for metal-rolling mills; Housings or mountings therefor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The application discloses a cold pilger mill transmission device with a mass balance mechanism, which comprises a driving shaft, a driving gear, first fan-shaped blocks, a driven shaft, a driven gear, second fan-shaped blocks, rotating shafts and connecting rods, wherein the two first fan-shaped blocks are arranged on the driving shaft, the middle parts of the two second fan-shaped blocks are symmetrically arranged at the opposite end parts of the two driven shafts, and the two rotating shafts are symmetrically arranged at the end parts of the two second fan-shaped blocks. Because the two symmetrical driven shafts, the two second fan-shaped blocks and the two rotating shafts are arranged to form two symmetrical cranks, the two cranks replace the existing crankshaft, the production cost and the production period are reduced, the two cranks respectively drive one connecting rod to do rotary motion, the bending force and the twisting force generated by the two connecting rods in an unsynchronized manner are avoided, and the service life of parts is prolonged; the phase stagger of the first fan-shaped block and the second fan-shaped block can effectively eliminate inertia force, improve the speed of the cold pilger mill transmission device and further improve the production efficiency.
Description
Technical Field
The application relates to special equipment for processing metal pipes, in particular to a cold pilger mill transmission device with a mass balance mechanism.
Background
In addition to the fact that a hydraulic cylinder directly drives a working frame to reciprocate, a transmission device of the cold-rolling tube mill used in the market at present adopts a transmission structure of an offset crank slide block which is almost driven by a motor, namely, the transmission mechanism of the cold-rolling tube mill is driven by the motor through a belt pulley or a reduction gearbox, or the transmission mechanism of the cold-rolling tube mill is directly connected with the transmission mechanism of the cold-rolling tube mill through a coupler by the motor, and then the transmission mechanism drives the working frame to reciprocate to realize rolling.
According to dynamics analysis, during rolling, the working frame of the cold pilger mill generates great inertia force due to reciprocating motion, and the inertia force is transmitted to the crank through the connecting rod to generate inertia moment on the crank shaft, so that the crank shaft bears alternating load, and the inertia force is transmitted to the foundation through the bearing seat of the crank shaft to cause vibration of equipment, thereby influencing product quality and equipment life.
The inertial force generated by the reciprocating motion of the working frame can generate great damage to equipment, so that the improvement of the rolling speed is seriously influenced, and the production efficiency of the rolling mill is restricted. Therefore, how to reduce the influence of inertia force has been an important research topic in the cold pilger mill industry.
The conventional and normal speed cold pilger mill transmission is shown in fig. 1, and the inertia force and the inertia torque of the stand are not balanced.
In order to overcome the large inertial forces and moments of inertia generated by the rolling mill stand during the reciprocating motion, a balancing mechanism for the inertial forces and moments of inertia must be employed. At present, more two balancing modes including vertical mass balance and horizontal mass balance are adopted in the market, wherein the most common is a horizontal mass balance mechanism with double sector blocks, and as shown in fig. 2, the balancing method can effectively balance first-order inertial force of a rack in the moving process, so that the moving speed of the rack is doubled.
Specifically, in the prior art, a transmission device of a KPW series cold pilger mill of the germany Meer company consists of a pair of connecting rods, a crankshaft and a sector block which are connected with the connecting rods, a balance shaft and a sector block, a pinion connected with a motor and a pair of large gears which have the same tooth number and are respectively connected with the crankshaft and the balance shaft. When the crankshaft rotates, the working frame is driven by the connecting rod to realize reciprocating motion. The number of teeth of the large gear on the crankshaft is equal to that of the gears meshed with the balance shaft, so that the balance shaft is driven to rotate. The four segments on the crankshaft and the two segments on the balance shaft are different by one phase to form a horizontal mass balance system for balancing the inertial force generated by the reciprocating motion of the frame.
The KPW series cold pilger mill adopts a horizontal mass balance mechanism, so that the inertial force generated by the reciprocating motion of the stand is effectively balanced, but the large-scale crankshaft is difficult to forge, is subjected to the combined action of bending and twisting during working, and has high manufacturing requirement. Because the crankshaft with high processing difficulty and high precision requirement is adopted, the manufacturing cost of the rolling mill is high, and the manufacturing period is long.
Disclosure of Invention
The application provides the cold pilger mill transmission device which has low manufacturing cost and short production period and can effectively offset inertia force to improve production efficiency.
An embodiment provides a cold pilger mill transmission device with a mass balance mechanism, which comprises a driving shaft, a driving gear, a first sector block, a driven shaft, a driven gear, a second sector block, a rotating shaft and a connecting rod, wherein the driving gear, the first sector block, the driven shaft, the driven gear, the second sector block, the rotating shaft and the connecting rod are symmetrically arranged; the two driving gears are respectively arranged at two ends of the driving shaft, the two first fan-shaped blocks are arranged on the driving shaft and are positioned between the two driving gears, the two driven shafts are arranged in parallel with the driving shaft, the two driven gears are respectively arranged on the two driven shafts and are meshed with the two driving gears, the middle parts of the two second fan-shaped blocks are symmetrically arranged at the opposite end parts of the two driven shafts, the two rotating shafts are symmetrically arranged at the end parts of the two second fan-shaped blocks and are parallel to the driven shafts, and one ends of the two connecting rods are respectively rotatably arranged on the rotating shafts; the two first fan-shaped blocks and the two second fan-shaped blocks are respectively arranged in the same phase, and the first fan-shaped blocks and the second fan-shaped blocks are positioned in the same plane and are staggered in phase.
Further, the phase difference between the first segment and the second segment is 180 °.
Further, the driven shaft and the second sector block are of an integral structure.
Further, the second sector block and the rotating shaft are of an integrated structure.
Further, the driven shaft, the second sector block position and the rotating shaft are of an integrated structure.
Further, the sector radian and the sector radius of the second sector block are larger than those of the first sector block, and the thicknesses of the second sector block and the first sector block are equal.
Further, the cold pilger mill transmission device further comprises a box body, the driving shaft and the driven shaft are rotatably arranged in the box body through bearings respectively, through holes are formed in two side faces of the box body, and one end of the driving shaft and the other end, connected with the rotating shaft, of the two connecting rods penetrate through the through holes respectively and are exposed out of the box body.
According to the cold pilger mill transmission device with the mass balance mechanism, due to the fact that the two symmetrical driven shafts, the two second fan-shaped blocks and the two rotating shafts are arranged, two symmetrical crank throws are formed, the two crank throws replace an existing crankshaft, production cost and production period are reduced, the two crank throws respectively drive one connecting rod to do rotary motion, bending force and twisting force generated by the two connecting rods in an unsynchronized mode are avoided, and the service life of parts is prolonged; the phase stagger of the first fan-shaped block and the second fan-shaped block can effectively eliminate inertia force, improve the speed of the cold pilger mill transmission device and further improve the production efficiency.
Drawings
FIG. 1 is a schematic view of a prior art cold pilger mill transmission;
FIG. 2 is a schematic diagram of a prior art cold pilger mill transmission with a mass balance mechanism;
FIG. 3 is a schematic diagram showing a front view of a cold pilger mill transmission with a mass balance mechanism in one embodiment;
fig. 4 is a schematic top sectional view of a cold pilger mill transmission with a mass balance mechanism in one embodiment.
Detailed Description
The application will be described in further detail below with reference to the drawings by means of specific embodiments.
The embodiment provides a cold pilger mill transmission device with a mass balance mechanism, the transmission device can effectively offset inertial force, the production efficiency is high, and the production cost of the device is low, and the production period is short. The transmission device is mainly installed on a cold pilger mill for use, and can also be installed on other equipment.
As shown in fig. 3 and 4, the cold pilger mill transmission device of the present embodiment mainly includes a driving shaft 1, a driving gear 2, a first segment 3, a driven shaft 4, a driven gear 5, a second segment 6, a rotating shaft 7, a connecting rod 8, and a box 9. Wherein the driving shaft 1 and the box body 9 are provided with one driving gear 2, a first sector block 3, a driven shaft 4, a driven gear 5, a second sector block 6, a rotating shaft 7 and a connecting rod 8, and are symmetrically arranged.
The box 9 includes upper cover and lower cover, and upper cover and lower cover are installed in the middle of forming a holding cavity together, and driving shaft 1, driving gear 2, first sector 3, driven shaft 4, driven gear 5, second sector 6, pivot 7 and connecting rod 8 are all installed in the cavity of box 9, can effectively keep apart with the external world, prevent that foreign matter or dust from getting into transmission device and influencing the transmission. Two adjacent sides of the box body 9 are respectively provided with one through hole and two through holes, one end of the driving shaft 1 penetrates through one through hole of the box body 9 to be exposed out of the box body 9 and is connected with a motor, and two connecting rods 8 penetrate through two through holes of the box body 9 to be exposed out of the box body 9 and are connected with a working frame to drive the working frame to reciprocate.
One driving shaft 1 and two driven shafts 4 are rotatably installed in the cavity of the case 9 through bearings, respectively, and the two driven shafts 4 are installed on a straight line along a space, the driven shafts 4 being parallel to the driving shaft 1. The two driving gears 2 are respectively arranged at two ends of the driving shaft 1, the two driven gears 5 are respectively arranged on the two driven shafts 4, the sizes and the tooth numbers of the driving gears 2 and the driven gears 5 are equal, and the driving gears 2 and the driven gears 5 are in meshed transmission connection.
The small ends of the two first segments 3 (the segments having opposite expanded large ends and opposite small ends in the radial direction) are mounted on the drive shaft 1 in spaced relation and between the two drive gears 2.
The middle parts of the two second sector blocks 6 are respectively arranged at two opposite ends of the two driven shafts 4, namely, the two second sector blocks 6 are positioned in the space between the two driven shafts 4.
The two rotating shafts 7 are respectively and fixedly and vertically arranged on the opposite surfaces of the small ends of the two second sector blocks 6, and the rotating shafts 7 are parallel to the driven shaft 4. So that the driven shaft 4, the second sector block 6 and the rotating shaft 7 form a crank structure, and the two crank structures are symmetrically arranged. In this embodiment, the driven shaft 4, the second sector block 6 and the rotating shaft 7 are of an integral structure. In other embodiments, the driven shaft 4 and the second sector block 6 are of an integral structure, and the rotating shaft 7 is fixed on the second sector block 6 through interference connection; or, the second sector block 6 and the rotating shaft 7 are in an integrated structure, and the second sector block 6 is fixed at the end part of the driven shaft 4 through interference connection.
In this embodiment, one ends of the two connecting rods 8 are rotatably mounted on the two rotating shafts 7 respectively through bearings, and the other ends are exposed to the outside of the case 9.
In this embodiment, the phases of the two first segments 3 are identical, the phases of the two second segments 6 are identical, and the mass of the second segments 6 is greater than that of the first segments 3. In this embodiment, the phase difference between the first segment 3 and the second segment 6 is preferably 180 °, so that the two can effectively cancel out the inertial force.
In the cold pilger mill transmission device with the mass balance mechanism, due to the fact that the two symmetrical driven shafts 4, the two second fan-shaped blocks 6 and the two rotating shafts 7 are arranged, two symmetrical crank throws are formed, the two crank throws replace an existing crank shaft, production cost and production period are reduced, the two crank throws respectively drive one connecting rod to do rotary motion, bending force and twisting force generated by the two connecting rods in an unsynchronized mode are avoided, and the service life of parts is prolonged; the phase positions of the first sector block 3 and the second sector block 6 are staggered by 180 degrees, so that the inertia force can be effectively eliminated, the speed of the cold pilger mill transmission device is improved, and the production efficiency is further improved. The application uses the crank to replace the crankshaft, which is not only suitable for the horizontal mass balance mechanism, but also suitable for the vertical mass balance mechanism.
In other embodiments, for small-sized cold pilger mills, the working stand can be driven by only one connecting rod 8, and accordingly, the number of the driving gear 2, the first sector 3, the driven shaft 4, the driven gear 5, the second sector 6 and the rotating shaft 7 is one, and the inertia force can be effectively eliminated, so that the speed of the cold pilger mill is improved, and the production efficiency is further improved.
The foregoing description of the application has been presented for purposes of illustration and description, and is not intended to be limiting. Several simple deductions, modifications or substitutions may also be made by a person skilled in the art to which the application pertains, based on the idea of the application.
Claims (4)
1. The cold pilger mill transmission device with the mass balance mechanism is characterized by comprising a driving shaft, a driving gear, a first sector block, a driven shaft, a driven gear, a second sector block, a rotating shaft and a connecting rod, wherein the driving gear, the first sector block, the driven shaft, the driven gear, the second sector block, the rotating shaft and the connecting rod are symmetrically arranged; the driving gears are respectively arranged at two ends of the driving shaft, the first fan-shaped blocks are arranged on the driving shaft and are positioned between the driving gears, the driven shafts are arranged in parallel with the driving shaft, the driven gears are respectively arranged on the driven shafts and are meshed with the driving gears, the middle parts of the second fan-shaped blocks are symmetrically arranged at the opposite end parts of the driven shafts, the rotating shafts are symmetrically arranged at the end parts of the second fan-shaped blocks and are parallel to the driven shafts, one ends of the connecting rods are respectively rotatably arranged on the rotating shafts, the driven shafts, the second fan-shaped blocks and the rotating shafts are in an integrated structure, and the driven shafts, the second fan-shaped blocks and the rotating shafts form a crank structure; the two first fan-shaped blocks and the two second fan-shaped blocks are respectively arranged in phase, the first fan-shaped blocks and the second fan-shaped blocks are staggered in phase, and the phase difference between the first fan-shaped blocks and the second fan-shaped blocks is 180 degrees.
2. The cold pilger mill transmission with a mass balance mechanism of claim 1, wherein the driven shaft and the second segment are of unitary construction.
3. The cold pilger mill transmission with a mass balance mechanism of claim 1, wherein said second segment location and said spindle are of unitary construction.
4. The cold pilger mill transmission with a mass balance mechanism according to claim 1, further comprising a box body, wherein the driving shaft and the driven shaft are rotatably installed in the box body through bearings respectively, through holes are formed in two side surfaces of the box body, and one end of the driving shaft and the other end of the connecting rod, which is connected with the rotating shaft relatively, respectively pass through the through holes and are exposed out of the box body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710712713.4A CN107377628B (en) | 2017-08-18 | 2017-08-18 | Cold pipe mill transmission device with mass balance mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710712713.4A CN107377628B (en) | 2017-08-18 | 2017-08-18 | Cold pipe mill transmission device with mass balance mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107377628A CN107377628A (en) | 2017-11-24 |
| CN107377628B true CN107377628B (en) | 2023-08-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710712713.4A Active CN107377628B (en) | 2017-08-18 | 2017-08-18 | Cold pipe mill transmission device with mass balance mechanism |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117772796B (en) * | 2024-02-23 | 2024-05-10 | 太原理工大学 | Gear connecting rod type asynchronous rolling mill |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101234399A (en) * | 2008-03-06 | 2008-08-06 | 中国重型机械研究院 | Cold pilger mill crankshaft-dual eccentric center quality level balance method |
| CN205165359U (en) * | 2015-11-26 | 2016-04-20 | 江阴市华东化工机械有限公司 | Two roller cold pilger mill's eccentric gear drive mechanism |
| CN205551081U (en) * | 2016-04-22 | 2016-09-07 | 宁波东重机械有限公司 | Periodic is crank link mechanism for cold pilger mill with two balancing pieces |
| CN106734232A (en) * | 2016-12-12 | 2017-05-31 | 江阴市华东化工机械有限公司 | A kind of new driving structure of cold pilger mill |
| CN207204858U (en) * | 2017-08-18 | 2018-04-10 | 广东科莱博科技有限公司 | A kind of cold pilger mill transmission device with mass balance mechanism |
-
2017
- 2017-08-18 CN CN201710712713.4A patent/CN107377628B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101234399A (en) * | 2008-03-06 | 2008-08-06 | 中国重型机械研究院 | Cold pilger mill crankshaft-dual eccentric center quality level balance method |
| CN205165359U (en) * | 2015-11-26 | 2016-04-20 | 江阴市华东化工机械有限公司 | Two roller cold pilger mill's eccentric gear drive mechanism |
| CN205551081U (en) * | 2016-04-22 | 2016-09-07 | 宁波东重机械有限公司 | Periodic is crank link mechanism for cold pilger mill with two balancing pieces |
| CN106734232A (en) * | 2016-12-12 | 2017-05-31 | 江阴市华东化工机械有限公司 | A kind of new driving structure of cold pilger mill |
| CN207204858U (en) * | 2017-08-18 | 2018-04-10 | 广东科莱博科技有限公司 | A kind of cold pilger mill transmission device with mass balance mechanism |
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| Publication number | Publication date |
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| CN107377628A (en) | 2017-11-24 |
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