CN111185603B - Base material driving mechanism of plasma rotary electrode atomization pulverizing equipment based on load compensation - Google Patents

Abstract

The utility model provides a plasma rotating electrode atomizing powder process equipment parent metal actuating mechanism based on load compensation which characterized in that: the device comprises two drum shafts which are respectively arranged on a drum base (3) side by side through bearings (2), are assembled by a drum (1) and a cantilever drum (9) and synchronously run; the base (3) is arranged on the integral base (12); front and rear balance wheels (10) which are in contact with the corresponding side of the drum wheel (1) and the cantilever drum wheel (9) and realize balance support on the drum shaft are respectively arranged on two sides of the integral base (12); and a front pinch roller device and a rear pinch roller device which are used for applying downward pressure to a bar (8) placed in the middle of the two drum shafts are arranged right above the middle positions of the two drum shafts, wherein the front pinch roller device is positioned right above the middle positions of the middle sections of the two drums, and the rear pinch roller device is positioned right above the middle positions of the outer ends of the two cantilever drums.

Description

Base material driving mechanism of plasma rotating electrode atomization powder making equipment based on load compensation

Technical Field

The invention relates to a mother material driving mechanism of plasma rotating electrode atomizing powder making equipment based on load compensation.

Background Art

Compared with plasma rotating electrode atomization powder making and gas atomization powder making, the powder produced has no satellite powder and hollow powder, and the powder is solid spherical core particles, which is very suitable for additive manufacturing and powder metallurgy forming processes. However, this powder making method is limited by the rod rotation speed (the higher the rotation speed of the parent material rod, the finer the powder produced), so it is difficult to prepare fine powder, which seriously restricts the development and promotion and application of this technology.

Summary of the invention

The purpose of the present invention is to provide a plasma rotating electrode atomization powder making equipment base material driving mechanism based on load compensation to address the deficiencies in the above-mentioned prior art. The present invention establishes a load compensation mechanism through reasonable structural design, adds constraints to the rotating slender rotating parts of the mechanism, greatly improves its rigidity and stability, effectively avoids the jumping and vibration of the rotating parts, reduces the impact load on the supporting bearings, and can achieve long-term high-speed rotation of the base material, effectively solving the problems of difficulty in increasing the speed of the bar and the short life of the rotating bearing.

The purpose of the present invention can be achieved by the following technical measures:

The mother material driving mechanism of the plasma rotating electrode atomizing powder making equipment based on load compensation of the present invention comprises two drum shafts which are respectively installed side by side on the drum base through bearings, and are assembled from a drum and a cantilever drum and operate synchronously; the base is installed on the integral base; front and rear balancing wheels which are respectively installed on both sides of the integral base and are in contact with the drum and the cantilever drum on the corresponding side to achieve balanced support for the drum shaft; front and rear pressure wheel devices for applying downward pressure to the rod placed between the two drum shafts are arranged directly above the middle position of the two drum shafts, wherein the front pressure wheel device is located directly above the middle position of the middle sections of the two drums, and the rear pressure wheel device is located directly above the middle position of the outer ends of the two cantilever drums.

Furthermore, the pressing wheel device of the present invention includes a pressing wheel installed below a pressing wheel seat through a wheel axle to apply downward pressure to the bar material, the pressing wheel seat is connected to a cylinder assembly, and the cylinder assembly is installed on a fixed plate.

The power input ends of the two drum shafts are connected to corresponding output shafts of a dual-output speed increasing box driven by a motor through couplings, and the dual-output speed increasing box is installed on an integral base.

The balancing wheel is mounted on the integral base via a balancing wheel seat.

The two symmetrically arranged front balance wheels are respectively supported on the lower side of the middle section of the corresponding side drum wheel, and the two symmetrically arranged rear balance wheels are respectively supported on the lower side of the outer end of the corresponding side cantilever drum wheel, corresponding to the installation positions of the front and rear pressure wheel devices.

The working principle and beneficial effects of the present invention are as follows:

The bar is located between the two drum shafts and is pressed by two front and rear pressure wheels. The motor drives the dual-output speed increaser. The corresponding output shafts of the dual-output speed increaser drive the two drum shafts to rotate synchronously through the coupling to achieve the first speed increase. The drum shaft drives the bar to rotate through friction. Due to the difference in diameter between the drum shaft and the bar, the speed increase is achieved again according to the transmission relationship, and finally the high-speed rotation of the bar is achieved.

Due to the two pressure wheels arranged front and back on the bar in the mechanism of the present invention, a certain pressure can be applied to the front and rear points of the bar, and radial constraints can be applied to it to prevent it from jumping too much, thereby improving the stability of the mechanism and reducing vibration, thereby effectively solving the main problems in the prior art that during the operation of the driving mechanism, the drum shaft and the bar are caused by unbalanced loads or dimensional errors, which in turn cause additional impact loads on the bearings, causing damage, resulting in a short bearing life, and restricting the difficulty in increasing the rotation speed of the bar.

The balancing wheel is in contact with the drum and the cantilever drum, and rotates with the drum shaft. It is located in the middle of the drum length and the outer end of the cantilever drum, that is, the position where the deflection of the drum shaft is the largest during rotation. The arrangement of the balancing wheel can add additional constraints and provide load compensation, improve the rigidity of the drum shaft, offset the unbalanced force transmitted by the pressure wheel and the bar, improve the rigidity and stability of the drum shaft, and reduce the impact on the bearing.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a front view of the present invention.

FIG. 2 is a side view of FIG. 1 .

FIG3 is a schematic diagram of the load compensation principle.

Serial numbers in the figure: 1. drum, 2. bearing, 3. drum base, 4. pressure roller, 5. axle, 6. pressure roller base, 7. cylinder assembly, 8. bar stock (bar stock parent material), 9. cantilever drum, 10. balance wheel, 11. balance wheel base, 12. integral base, 13. motor, 14. dual output speed increaser (speed increaser), 15. coupling, 16. fixing plate.

DETAILED DESCRIPTION

The present invention will be further described below in conjunction with embodiments (attached drawings):

As shown in Figures 1 and 2, the mother material driving mechanism of the plasma rotating electrode atomizing powder making equipment based on load compensation of the present invention includes two drum shafts which are assembled from a drum 1 and a cantilever drum 9 and run synchronously and are respectively installed side by side on a drum base 3 through bearings 2; the base 3 is installed on an integral base 12; front and rear balancing wheels 10 are respectively installed on both sides of the integral base 12 to contact the drum 1 and the cantilever drum 9 on the corresponding side to achieve balanced support for the drum shaft, and the balancing wheel 10 is installed on the integral base 12 through a balancing wheel seat 11; front and rear pressure wheel devices for applying downward pressure to the rod 8 placed between the two drum shafts are arranged directly above the middle position of the two drum shafts, wherein the front pressure wheel device is located directly above the middle position of the middle sections of the two drums, and the rear pressure wheel device is located directly above the middle position of the outer ends of the two cantilever drums.

Furthermore, the pressing wheel device of the present invention includes a pressing wheel 4 installed below a pressing wheel seat 6 through a wheel axle 5 to apply downward pressure to the rod 8. The pressing wheel seat 6 is connected to a cylinder assembly 7, and the cylinder assembly 7 is installed on a fixed plate 16.

The power input ends of the two drum shafts are connected to corresponding output shafts of a dual-output speed increasing box 14 driven by a motor 13 through couplings 15 , and the dual-output speed increasing box 14 is mounted on the integral base 12 .

The two symmetrically arranged front balance wheels 10 are respectively supported on the lower side of the middle section of the corresponding side drum wheel, and the two symmetrically arranged rear balance wheels 10 are respectively supported on the lower side of the outer end of the corresponding side cantilever drum wheel, corresponding to the installation position of the front and rear pressure wheel devices.

As shown in Figure 3, for the convenience of explanation, the forces in the mechanism are simplified into concentrated loads, and the middle section of the pressure wheel is selected for description. The pressure F applied by the pressure wheel to the bar stock is in contact with the two drum wheels, and the pressure F will be transmitted to the drum wheel shaft. During the rotation of the bar stock, the centrifugal load caused by the uneven material will also be transmitted to the drum wheel shaft. The comprehensive force applied by the bar stock to the two drum wheels is named _f1 and _f2 . Both _f1 and _f2 point to the balance wheel along the direction of the line connecting the center of the bar stock and the drum wheel, and the two forces are transmitted to the balance wheel through the drum wheel. By reasonably designing the position of the balance wheel, its center of the circle is collinear with the drum wheel and the center of the bar stock section, so that the balance wheel can apply reaction forces _a1 and _a2 to the drum wheel, and _a1 is equal to _f1, and _a2 is equal to _f2 . In this way, the comprehensive load applied to the drum wheel shaft by the outside world may be zero in theory. The drum shaft is a rotating component that has been dynamically balanced. During high-speed rotation, the load caused by the center of mass offset can be ignored, which means that the bearings supporting the drum shaft will bear very small loads during operation, which is of great benefit to increasing the bearing life and the rotation speed of the bar.

The center of the drum and the outer end of the cantilever drum are the positions with the largest deflection during the rotation of the drum shaft. In order to make the balance wheel better play the role of load compensation, the drum shaft should be arranged at the above two positions to increase constraints on the drum shaft and improve the rigidity and stability of the drum shaft.

The present invention can realize high-speed rotation of the bar stock through the above-mentioned mechanism design; multiple sets of pressure wheels and balancing wheels are arranged in the mechanism to add additional constraints to the slender rotating parts in the mechanism and establish a load compensation mechanism, which greatly improves the rigidity and stability of the rotating parts of the driving mechanism, effectively reduces the impact damage to the bearings, and can realize long-term and stable operation of the bar stock base material at high speed.

Claims (5)

1. The utility model provides a plasma rotating electrode atomizing powder process equipment parent metal actuating mechanism based on load compensation which characterized in that: the device comprises two drum shafts which are respectively arranged on a drum base (3) side by side through bearings (2), are assembled by a drum (1) and a cantilever drum (9) and synchronously run; the base (3) is arranged on the integral base (12); front and rear balance wheels (10) which are in contact with the corresponding side of the drum wheel (1) and the cantilever drum wheel (9) and realize balance support on the drum shaft are respectively arranged on two sides of the integral base (12); and a front pinch roller device and a rear pinch roller device which are used for applying downward pressure to a bar (8) placed in the middle of the two drum shafts are arranged right above the middle positions of the two drum shafts, wherein the front pinch roller device is positioned right above the middle positions of the middle sections of the two drums, and the rear pinch roller device is positioned right above the middle positions of the outer ends of the two cantilever drums.

2. The load compensation-based plasma rotary electrode atomizing powder process equipment base material driving mechanism according to claim 1, wherein: the pinch roller device comprises a pinch roller (4) which is arranged below a pinch roller seat (6) through a wheel shaft (5) and applies downward pressure to a bar (8), the pinch roller seat (6) is connected with an air cylinder assembly (7), and the air cylinder assembly (7) is arranged on a fixed plate (16).

3. The load compensation-based plasma rotary electrode atomizing powder process equipment base material driving mechanism according to claim 1, wherein: the power input ends of the two drum shafts are respectively connected with corresponding output shafts of a double-output speed increasing box (14) driven by a motor (13) through a coupler (15), and the double-output speed increasing box (14) is arranged on the integral base (12).

4. The load compensation-based plasma rotary electrode atomizing powder process equipment base material driving mechanism according to claim 1, wherein: the balance wheel (10) is arranged on the integral base (12) through the balance wheel seat (11).

5. The load compensation-based plasma rotary electrode atomizing powder process equipment base material driving mechanism according to claim 1, wherein: two front balance wheels (10) which are symmetrically arranged are respectively supported below the sides of the middle section of the corresponding side drum, and two rear balance wheels (10) which are symmetrically arranged are respectively supported below the sides of the outer ends of the corresponding side cantilever drum and correspond to the mounting positions of the front pinch roller device and the rear pinch roller device.