CN210474984U - Roller reciprocating driving mechanism of high-speed cold pilger mill - Google Patents
Roller reciprocating driving mechanism of high-speed cold pilger mill Download PDFInfo
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- CN210474984U CN210474984U CN201921257971.9U CN201921257971U CN210474984U CN 210474984 U CN210474984 U CN 210474984U CN 201921257971 U CN201921257971 U CN 201921257971U CN 210474984 U CN210474984 U CN 210474984U
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- cold pilger
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Abstract
The utility model discloses a roller reciprocating driving mechanism of a high-speed cold pilger mill, which comprises a main machine seat, wherein one end of the main machine seat is horizontally provided with a driving shaft, a pair of driving gears are symmetrically distributed on the driving shaft, one end of the driving shaft is fixedly provided with a belt pulley, two sides of the main machine seat are respectively provided with two transmission gears meshed with the driving gears, the inner end of a gear shaft of each transmission gear is provided with a linking arm, the linking arm is provided with an installation elongated slot, one end of the linking arm is movably connected with the linking arm through a movable rod embedded in the installation elongated slot, the transmission gears are symmetrically provided with fan-shaped notches at two sides of the part of the linking arm with the installation elongated slot, the main machine seat is provided with a balance gear meshed with the transmission gears at one side of the transmission gears, two sides of the front end of the roller seat are movably connected with the other end of the connecting rod through a connecting shaft.
Description
Technical Field
The invention relates to the field of cold pilger mills, in particular to a roller reciprocating driving mechanism of a high-speed cold pilger mill.
Background
In the rolling process of the existing cold pilger mill, the working roll seat generates inertia force due to reciprocating motion, and the inertia force is transmitted to the main machine seat, so that the vibration of the main machine seat is caused, the looseness of an equipment foundation is further caused, and the quality of a product and the service life of the equipment are influenced.
In the prior art, the roller seat is driven by a single transmission gear, and the balance effect is poor although the manufacturing cost is low due to the limited balance weight which can be configured by the transmission gear.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the roller reciprocating driving mechanism of the high-speed cold pilger mill has lower manufacturing cost and energy consumption under the same rolling capacity.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a roller reciprocating driving mechanism of a high-speed cold pilger mill comprises a main machine base, wherein one end of the main machine base is horizontally provided with a driving shaft, a pair of driving gears are symmetrically distributed on the driving shaft, one end of the driving shaft is fixedly provided with a belt pulley, two sides of the main machine base are respectively provided with two transmission gears meshed with the driving gears, the inner ends of gear shafts of the transmission gears are provided with a link arm, the link arm is provided with a mounting elongated slot, one end of the link arm is movably connected with the link arm through a movable rod movably embedded in the mounting elongated slot, fan-shaped notches with the axes of the transmission gears as central lines are symmetrically arranged on two sides of the part of the link arm provided with the mounting elongated slot, a balance gear meshed with the transmission gears is arranged on one side of the transmission, when the end part of the installation long groove section of the upper link arm of the transmission gear rotates to the top end, fan-shaped concave parts on two sides of the balance gear rotate to the bottom end, a group of linear guide rails are arranged at the bottom of the other end in the main machine seat in parallel, a roller seat is movably arranged on each linear guide rail, two sides of the front end of each roller seat are movably connected with the other end of each link through a connecting shaft, a pair of roller assemblies are arranged in each roller seat in parallel along the direction perpendicular to the direction of each link, a synchronous gear is fixedly arranged on the outer side of each roller assembly, and a rack meshed.
Preferably, the link arm is in a straight line shape, and the connection position of the link arm and the gear shaft of the transmission gear is located in the middle of the link arm.
Preferably, a driving gear on the driving shaft near the pulley side is connected with the driving shaft through a double key to transmit torque, and the other driving gear is connected with the driving shaft through an expansion sleeve to transmit torque.
As a preferred scheme, the driving gear and the transmission gear are meshed with each other through helical teeth, and the transmission gear and the balance gear are meshed with each other through helical teeth.
Preferably, the balance gear and the transmission gear have the same radial size.
As a preferred scheme, the roller seat is machined by adopting a forging piece obtained by a forging process.
The invention has the beneficial effects that: in the scheme, the transmission gear drives the balance gear to work, the centrifugal force of the transmission gear is balanced through the fan-shaped notch, the transmission gear and the balance gear are opposite in rotation direction, resultant force in the horizontal direction can be used for eliminating the inertia force of the roller seat, and two groups of gears are opposite in force in the vertical direction, and parts of the two groups of gears can be mutually offset. Under the condition that the balance weight of the transmission gear and the balance gear is selected reasonably, the machine can be ensured to have no shake at high speed of the rolling mill, and the quality qualification rate of finished products of rolled finished pipes is obviously improved. The transmission gear and the balance gear are arranged on the main machine seat on the outer side of the connecting rod, so that the thickness of the gear can be customized according to requirements and is not influenced by an installation space; in addition, on the premise of ensuring the strength, the size of the width direction of the roller seat under the same equipment specification can be smaller, the weight of the roller seat is reduced, the size of a driving gear for driving and the like can be reduced, the processing difficulty and the processing cost of the gear can be obviously reduced after the size of the gear is reduced, the effective energy consumption of the power device for driving the roller is higher, and the rolling effect is improved.
Because the connecting position of the connecting arm which is in a straight line shape and the gear shaft of the transmission gear is positioned in the middle of the connecting arm, the gravity center is close to the rotating center when the connecting arm rotates, and a good balancing effect is achieved.
Because the driving gear on the driving shaft close to the side of the belt pulley is connected with the driving shaft through a double key to transmit torque, the other driving gear is connected with the driving shaft through the expansion sleeve to transmit torque, so that the left connecting rod and the right connecting rod are concentric after the gears are meshed.
Because the driving gear and the transmission gear are meshed with each other through the helical teeth, compared with straight-tooth meshing, the helical tooth meshing has the advantages of high contact ratio, stable transmission and low noise.
Because the roll seat is made of the forged piece, the rigidity and the good toughness of the roll seat are ensured, and the weight of the roll seat is reduced, so that the inertia force and the inertia moment of the roll seat in motion are reduced.
Drawings
Fig. 1 is a schematic three-dimensional structure of the present invention.
In fig. 1: 1. the automatic rolling machine comprises a main machine base, 2 driving shafts, 3 driving gears, 4 belt pulleys, 5 link arms, 6 movable rods, 7 transmission gears, 8 connecting shafts, 9 connecting rods, 10 racks, 11 balance gears, 12 linear guide rails, 13 rolling roller bases, 14 rolling roller assemblies, 15 rolling roller assemblies and 16 synchronizing gears.
Detailed Description
Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1, the roller reciprocating driving mechanism of the high-speed cold pilger mill comprises a main machine base 1, wherein a driving shaft 2 is horizontally arranged at one end of the main machine base 1, a pair of driving gears 3 are symmetrically distributed on the driving shaft 2, and a belt pulley 4 is fixedly arranged at one end of the driving shaft 2. The driving gear 3 on the driving shaft 2 near the belt pulley 4 is connected with the driving shaft 2 through a double key to transmit torque, and the other driving gear 3 is connected with the driving shaft 2 through an expansion sleeve to transmit torque.
Two sides of the main machine base 1 are respectively provided with two transmission gears 7 which are meshed with the driving gear 3, the inner end of a gear shaft of each transmission gear 7 is provided with a link arm 5, the link arm 5 is in a straight shape, the joint of the link arm 5 and the gear shaft of each transmission gear 7 is positioned in the middle of the link arm 5, one side of each link arm 5 is provided with an installation elongated slot, one end of each link rod 9 is movably connected with the link arm 5 through a movable rod 6 which is movably embedded in the installation elongated slot, fan-shaped notches which take the axis of each transmission gear as the central line are symmetrically arranged at two sides of the part, provided with the installation elongated slot, of each link arm 5, one side,
the radial size of the balance gear 11 is consistent with that of the transmission gear 7 and the balance gear 11 is meshed with the transmission gear 7 through helical teeth, fan-shaped dents matched with the fan-shaped notches in the transmission gear 7 are arranged on the balance gear 11, and when the end part of the installation long groove section of the link arm 5 in the transmission gear 7 rotates to the top end, the fan-shaped dents on two sides of the balance gear 11 rotate to the bottom end.
A group of linear guide rails 12 are arranged at the bottom of the other end in the main machine base 1 in parallel, a roller base 13 is movably arranged on each linear guide rail 12, two sides of the front end of each roller base 13 are movably connected with the other end of the connecting rod 9 through connecting shafts 8, a pair of roller assemblies 14 and 15 are arranged in the roller bases 13 in parallel along the direction perpendicular to the connecting rods, synchronous gears 16 are fixedly arranged outside the roller assemblies 14 and 15, racks 10 are fixedly arranged in the main machine base 1, and the racks 10 are meshed with the synchronous gears 16.
When in work: a motor (not shown in the figure) drives the belt pulley 4, the belt pulley 4 drives the driving shaft 2 to further drive the driving gear 3 to rotate, the driving gear 3 is meshed with the driving transmission gear 7 to drive the transmission gear 7 to rotate, and the transmission gear 7 drives the connecting rod 9 to further drive the roller seat 13 to do variable-speed reciprocating motion on the linear guide rail 12. In the reciprocating motion of the roller seat 13, the synchronous gear 16 moves on the rack 10, and the synchronous gear 16 drives the left roller assembly 14 and the right roller assembly 15 to perform cold rolling work on the pipe fitting. In the reciprocating motion of the roller seat 13, because the rotation directions of the transmission gear 7 and the balance gear 11 are opposite, the inertia forces on the transmission gear 7 and the balance gear 11 can be combined in the horizontal direction and the inertia force of the roller seat 12 can be eliminated, and because the two groups of gear forces are opposite in the vertical direction, the inertia forces can be mutually counteracted. Therefore, under the condition that the balance weights of the transmission gear and the balance gear are selected reasonably, the inertia force of the roller seat 12 is eliminated, and the condition that the machine does not shake at high speed of the rolling mill is ensured.
The above-mentioned embodiments are merely illustrative of the principles and effects of the present invention, and some embodiments may be used, not restrictive; it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications belong to the protection scope of the present invention.
Claims (6)
1. The utility model provides a reciprocal actuating mechanism of roll of high-speed cold pilger mill which characterized in that: the main machine seat is provided with a balance gear meshed with the transmission gear on one side of the transmission gear away from the driving shaft, the balance gear is meshed with the transmission gear, the balance gear is provided with a fan-shaped indent matched with the fan-shaped indent on the transmission gear, the fan-shaped indents on two sides of the balance gear rotate to the bottom when the end part of the installation long groove section of the transmission gear on the transmission gear rotates to the top end, the roller assembly is characterized in that a group of linear guide rails are arranged at the bottom of the other end in the main machine seat in parallel, a roller seat is movably arranged on each linear guide rail, two sides of the front end of each roller seat are movably connected with the other end of the connecting rod through connecting shafts, a pair of roller assemblies are arranged in the roller seats in parallel along the direction perpendicular to the connecting rod, a synchronizing gear is fixedly arranged on the outer side of each roller assembly, and a rack meshed with the synchronizing gear is fixedly arranged on the inner side of the main machine.
2. The roll reciprocating drive mechanism of a high-speed cold pilger mill according to claim 1, wherein: the link arm is in a straight line shape, and the joint of the link arm and the gear shaft of the transmission gear is positioned in the middle of the link arm.
3. The roll reciprocating drive mechanism of a high-speed cold pilger mill according to claim 2, wherein: the driving gear on the driving shaft near the pulley side is connected with the driving shaft through a double key to transmit torque, and the other driving gear is connected with the driving shaft through an expansion sleeve to transmit torque.
4. The roll reciprocating drive mechanism of a high-speed cold pilger mill according to claim 3, wherein: the driving gear and the transmission gear, and the transmission gear and the balance gear are meshed by adopting helical teeth.
5. The roll reciprocating drive mechanism of a high-speed cold pilger mill according to claim 4, wherein: the balance gear and the transmission gear have the same radial size.
6. The roll reciprocating drive mechanism of a high-speed cold pilger mill according to claim 5, wherein: the roller seat is processed by adopting a forging piece obtained by a forging process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921257971.9U CN210474984U (en) | 2019-08-05 | 2019-08-05 | Roller reciprocating driving mechanism of high-speed cold pilger mill |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921257971.9U CN210474984U (en) | 2019-08-05 | 2019-08-05 | Roller reciprocating driving mechanism of high-speed cold pilger mill |
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| CN210474984U true CN210474984U (en) | 2020-05-08 |
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| CN201921257971.9U Active CN210474984U (en) | 2019-08-05 | 2019-08-05 | Roller reciprocating driving mechanism of high-speed cold pilger mill |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110404976A (en) * | 2019-08-05 | 2019-11-05 | 张家港恒立机械有限公司 | The roll reciprocating drive mechanism of high-speed cold Pilger mill |
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2019
- 2019-08-05 CN CN201921257971.9U patent/CN210474984U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110404976A (en) * | 2019-08-05 | 2019-11-05 | 张家港恒立机械有限公司 | The roll reciprocating drive mechanism of high-speed cold Pilger mill |
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