阅读说明：本技术 无连杆高速往复冷轧管机行星式传动结构 (Planetary transmission structure of connecting rod-free high-speed reciprocating cold pilger mill ) 是由 严红夏 王惠新 于 2021-08-31 设计创作，主要内容包括：本发明公开了一种无连杆高速往复冷轧管机行星式传动结构,包括机座,机座上转动设有主轴及其驱动主轴转动的主动力机构,主轴中转动嵌设有平行于主轴中心偏离主轴中心的偏心轴,偏心轴上设有圆柱行星齿轮,机座上设有与圆柱行星齿轮啮合以驱动圆柱行星齿轮及偏心轴转动的内齿轮,偏心轴端部上设有沿径向伸出的连接座,连接座上设有轧制系统连接轴,偏心轴外周上在轧制系统连接轴与偏心轴轴心连线的外延段处设有扇面形的偏心配重块,主轴外周上设有平衡偏心轴的扇面形的主轴配重块,圆柱行星齿轮的分度圆直径等于主轴中心与偏心轴中心距离与偏心轴上轧制系统连接轴中心偏心距离之和,圆柱行星齿轮分度圆直径等于两倍主轴中心与偏心轴中心距离。(The invention discloses a planetary transmission structure of a connecting rod-free high-speed reciprocating cold pilger mill, which comprises a stand, wherein a main shaft and a main power mechanism for driving the main shaft to rotate are rotatably arranged on the stand, an eccentric shaft which is parallel to the center of the main shaft and deviates from the center of the main shaft is rotatably embedded in the main shaft, a cylindrical planetary gear is arranged on the eccentric shaft, an internal gear which is meshed with the cylindrical planetary gear to drive the cylindrical planetary gear and the eccentric shaft to rotate is arranged on the stand, a connecting seat which extends along the radial direction is arranged at the end part of the eccentric shaft, a rolling system connecting shaft is arranged on the connecting seat, a sector-shaped eccentric balancing weight is arranged at an extension section of a connecting line of the rolling system connecting shaft and the axis of the eccentric shaft on the periphery of the eccentric shaft, a sector-shaped main shaft balancing weight for balancing the eccentric shaft is arranged on the periphery of the main shaft, the reference circle diameter of the cylindrical planetary gear is equal to the sum of the distance between the center of the main shaft and the center of the eccentric shaft and the eccentric distance between the center of the rolling system connecting shaft on the eccentric shaft, the reference circle diameter of the cylindrical planetary gear is equal to twice the distance between the center of the main shaft and the center of the eccentric shaft.)

1. The utility model provides a no connecting rod planetary drive structure of reciprocal cold pilger mill at a high speed, includes the frame, rotates on the frame to be equipped with main shaft and its main power mechanism of drive spindle pivoted, its characterized in that: the eccentric shaft parallel to the center of the main shaft and deviating from the center of the main shaft is embedded in the main shaft in a rotating mode, a cylindrical planetary gear is arranged on the eccentric shaft, an inner gear meshed with the cylindrical planetary gear to drive the cylindrical planetary gear and the eccentric shaft to rotate is arranged on the base, a connecting seat extending out in the radial direction is arranged at the end portion of the eccentric shaft, a rolling system connecting shaft is arranged on the connecting seat, a sector-shaped eccentric balancing weight is arranged at the epitaxial section of the connecting line of the rolling system connecting shaft and the axis of the eccentric shaft on the periphery of the eccentric shaft, a sector-shaped main shaft balancing weight for balancing the eccentric shaft is arranged on the periphery of the main shaft, the reference circle diameter of the cylindrical planetary gear is equal to the sum of the distance between the center of the main shaft and the center of the eccentric shaft and the center of the rolling system connecting shaft on the eccentric shaft, and the reference circle diameter of the cylindrical planetary gear is equal to the distance between the center of the double of the main shaft and the center of the eccentric shaft.

2. The planetary transmission structure of the connectionless high-speed reciprocating cold pilger mill according to claim 1, wherein: the main power mechanism is rotatably arranged on a transmission shaft parallel to the main shaft on the base, the transmission shaft is connected with the power assembly, a transmission pinion is further sleeved on the transmission shaft, and a transmission large gear meshed with the transmission gear is sleeved on the main shaft.

3. The planetary transmission structure of the connectionless high-speed reciprocating cold pilger mill according to claim 2, wherein: the power assembly comprises a power shaft and a driving motor, wherein the power shaft is rotatably arranged on the machine base, the driving motor is used for driving the power shaft, a driving bevel gear is arranged on the power shaft, and a driven bevel gear meshed with the driving bevel gear is sleeved on the transmission shaft.

4. The planetary transmission structure of the connectionless high-speed reciprocating cold pilger mill according to any one of claims 1 to 3, wherein: the cylindrical planetary gear is positioned at one end of the eccentric shaft far away from the eccentric balancing weight.

5. The planetary transmission structure of the connectionless high-speed reciprocating cold pilger mill according to claim 4, wherein: an avoiding notch is formed in the main shaft, and the cylindrical planetary gear is partially exposed out of the avoiding notch and meshed with the inner gear.

Technical Field

The invention relates to a cold pilger mill, in particular to a planetary transmission structure of a connecting rod-free high-speed reciprocating cold pilger mill.

Background

The existing transmission mechanism for the cold tube mill adopts a connecting rod for transmission, the volume is generally larger, and the requirement on the processing precision is higher. There is patent 201921257912.1 that discloses a self-balancing transmission mechanism for cold rolling mill, which comprises a main frame base, one end of the main frame base is horizontally provided with a driving shaft, the axial lead of the driving shaft is perpendicular to the symmetrical plane of the main frame base, 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, one side of the driving shaft in the main frame base is horizontally provided with a crank gear shaft, the crank gear shaft is perpendicular to the symmetrical plane of the main frame base, two ends of the crank gear shaft are symmetrically provided with a pair of crank gears, two sides of the crank gears are symmetrically provided with fan-shaped concaves on two sides of the connecting shaft, one side of the crank gear shaft in the main frame base is horizontally provided with a balance gear shaft, the balance gear shaft is perpendicular to the symmetrical plane of the main frame base, two ends of the balance gear shaft are symmetrically provided with balance gears, two sides of the balance gears are symmetrically provided with fan-shaped concaves with the same area as the concaves on two sides of the crank gears, the other end in the main machine seat is movably provided with a machine seat, and the machine seat is movably connected with one end of a connecting rod;

or as patent 201921965173.1 discloses a crankshaft transmission device of a double-line cold pilger mill, which comprises a shell, a direct current motor, a transmission mechanism, a crankshaft, a first rotating shaft, a connecting plate and a limiting plate, the invention arranges a transmission mechanism, the left side and the right side of the transmission mechanism are respectively provided with two fan-shaped blocks, the two fan-shaped blocks are driven by two big gears which are meshed with each other, one fan-shaped block is connected to the crankshaft through the rotating shaft, the other fan-shaped block is used as a counterweight, the two fan-shaped blocks have a phase difference, and a horizontal mass balance system is formed by the two groups of fan-shaped blocks on the left side and the right side to balance the inertia force generated by the reciprocating motion of a stand.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the planetary transmission structure of the connecting-rod-free high-speed reciprocating cold pilger mill has a compact structure and operates stably.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a planetary transmission structure of a connecting rod-free high-speed reciprocating cold pilger mill comprises a stand, wherein a main shaft and a main power mechanism for driving the main shaft to rotate are rotatably arranged on the stand, an eccentric shaft which is parallel to the center of the main shaft and deviates from the center of the main shaft is rotatably embedded in the main shaft, a cylindrical planetary gear is arranged on the eccentric shaft, an internal gear which is meshed with the cylindrical planetary gear to drive the cylindrical planetary gear and the eccentric shaft to rotate is arranged on the stand, a connecting seat which extends out along the radial direction is arranged at the end part of the eccentric shaft, a rolling system connecting shaft is arranged on the connecting seat, a sector-shaped eccentric balancing weight is arranged at the epitaxial section of the connecting line of the rolling system connecting shaft and the axis of the eccentric shaft on the periphery of the eccentric shaft, a sector-shaped main shaft balancing weight for balancing the eccentric shaft is arranged on the periphery of the main shaft, the reference circle diameter of the cylindrical planetary gear is equal to the sum of the distance between the center of the main shaft and the center of the eccentric shaft and the eccentric shaft center of the eccentric shaft on the eccentric shaft, the reference circle diameter of the cylindrical planetary gear is equal to twice the distance between the center of the main shaft and the center of the eccentric shaft.

As a preferred scheme, the main power mechanism is rotatably arranged on a transmission shaft parallel to the main shaft on the base, the transmission shaft is connected with the power assembly, a transmission pinion is further sleeved on the transmission shaft, and a transmission large gear meshed with the transmission gear is sleeved on the main shaft.

As a preferred scheme, the power assembly comprises a power shaft rotatably arranged on the base and a driving motor for driving the power shaft, a driving bevel gear is arranged on the power shaft, and a driven bevel gear meshed with the driving bevel gear is sleeved on the transmission shaft.

Preferably, the cylindrical planetary gear is located at one end of the eccentric shaft far away from the eccentric clump weight.

Preferably, the main shaft is provided with an avoidance notch, and the cylindrical planetary gear part is exposed out of the avoidance notch and meshed with the internal gear.

The invention has the beneficial effects that: the eccentric shaft is driven by power, the eccentric shaft rotates around the main shaft and also rotates around the center of the eccentric shaft, the reference circle diameter of the cylindrical planetary gear is equal to the sum of the distance between the center of the main shaft and the center of the eccentric shaft and the eccentric distance between the center of the connecting shaft of the rolling system on the eccentric shaft, the reference circle diameter of the cylindrical planetary gear is equal to twice the distance between the center of the main shaft and the center of the eccentric shaft, and the center of the connecting shaft of the rolling system on the eccentric shaft always linearly reciprocates along the radial center line of the main shaft. And the main shaft balancing weight revolves around the main shaft, the eccentric balancing weight revolves around the eccentric shaft while revolving around the main shaft, the moving directions are opposite, the eccentric balancing weight runs to the extreme positions at the two sides, and the centrifugal kinetic energy is counteracted mutually. In the process of running to the axis, the centrifugal kinetic energy of the main shaft counterweight block and the eccentric counterweight block is superposed to offset the reciprocating inertia force of the machine base; the connecting shaft of the rolling system of the transmission mechanism is directly connected with the rolling seat without connecting rod transmission, so that the manufacturing difficulty is reduced, the transmission mechanism is compact in structure, and the whole operation of equipment is more stable.

Drawings

Fig. 1 is a schematic diagram of the structural principle of the present invention.

FIG. 2 is a schematic structural diagram of a connecting shaft of a rolling system in a limit position on one side in the invention.

FIG. 3 is a schematic view of the structure of the rolling system connecting shaft in the center position in the present invention.

FIG. 4 is a schematic structural diagram of the connecting shaft of the rolling system in the limit position on the other side in the invention.

Fig. 5 is a schematic view of the rolling system of the present invention with the shaft re-centered.

Fig. 6 is a schematic structural diagram of the present invention.

In the figure: a. the device comprises a power shaft, a driven bevel gear, a driving bevel gear, a cylindrical pinion, a transmission shaft, an internal gear, a transmission shaft, a transmission.

Detailed Description

Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1-6, a planetary transmission structure of a connecting-rod-free high-speed reciprocating cold pilger mill comprises a stand, a main power mechanism which is rotatably provided on the stand and drives the main shaft i to rotate, a transmission shaft e which is rotatably provided on the stand and is parallel to the main shaft i, the transmission shaft e is connected with a power assembly, the power assembly comprises a power shaft a rotatably provided on the stand and a driving motor which drives the power shaft a, a driving bevel gear c is provided on the power shaft a, a driven bevel gear b which is engaged with the driving bevel gear c is sleeved on the transmission shaft e, a transmission pinion is further sleeved on the transmission shaft e, and a transmission large gear which is engaged with the transmission gear is sleeved on the main shaft i.

An eccentric shaft j which is parallel to the center of the main shaft i and deviates from the center of the main shaft i is embedded in the main shaft i in a rotating mode, a cylindrical planetary gear g is arranged on the eccentric shaft j, an internal gear f which is meshed with the cylindrical planetary gear g to drive the cylindrical planetary gear g and the eccentric shaft j to rotate is arranged on the machine base, and the cylindrical planetary gear g is located at one end, far away from the eccentric balancing weight n, of the eccentric shaft j. An avoidance notch is formed in the main shaft i, and the cylindrical planetary gear g is partially exposed out of the avoidance notch and meshed with the internal gear f.

The end part of the eccentric shaft j is provided with a connecting seat k which extends out along the radial direction, the connecting seat k is provided with a rolling system connecting shaft l, and the eccentric shaft j, the connecting seat k and the eccentric shaft j are integrally manufactured parts; the periphery of the eccentric shaft j is provided with a sector-shaped eccentric balancing weight n at the epitaxial section of the axis connecting line of the rolling system connecting shaft l and the eccentric shaft j, the periphery of the main shaft i is provided with a sector-shaped main shaft balancing weight m for balancing the eccentric shaft j, and the reference circle diameter of the cylindrical planetary gear gEqual to the sum of the distance d1 between the center of the main shaft i and the center of the eccentric shaft j and the eccentric distance d2 between the center of the connecting shaft l of the rolling system on the eccentric shaft j, and the reference circle diameter of the cylindrical planetary gear gEqual to twice the distance d1 between the center of the main shaft i and the center of the eccentric shaft j.

As shown in fig. 2-5, during operation, power is input from the power shaft a, the driving bevel gear c and the driven bevel gear b drive the transmission shaft e to rotate, and the transmission pinion and the transmission gearwheel drive the main shaft i to rotate, so that the eccentric shaft j rotates around the center of the eccentric shaft j under the meshing transmission of the internal gear f while the main shaft i rotates. And a rolling system connecting shaft l at the other end of the eccentric shaft j is connected with a rolling seat of the cold pilger mill.

The eccentric shaft j is driven by power, and the eccentric shaft j revolves around the main shaft i and also revolves around the center of the eccentric shaft j at the same time becauseThe center of a connecting shaft l of a rolling system on the eccentric shaft j always linearly reciprocates along the radial center line of the main shaft i.

The main shaft balancing weight m revolves around the main shaft i, and the eccentric balancing weight revolves around the eccentric shaft j while revolving around the main shaft i. The direction of movement is opposite. When the device is moved to the extreme positions at both sides, the centrifugal kinetic energy is counteracted. And in the process of running to the axis, the centrifugal kinetic energy of the spindle balancing weight m and the eccentric balancing weight is superposed to offset the reciprocating inertia force of the machine base.

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.