CN104500658A - Built-in solar tracking azimuth driving device - Google Patents

Abstract

The invention discloses a built-in sun tracking azimuth transmission device, which comprises a circular box cover, an internal tooth type four-point contact ball turntable bearing, a worm, a turbine worm-bevel gear reducer assembly, and an output short shaft. The shape box cover is fixed at the top position inside the hollow column. The reducer assembly is installed at the bottom of the circular box cover. The output short axis of the reducer assembly is upward, and the external gear is installed on the short axis. The external gear and the internal gear are four-point The bearing of the contact ball turntable is meshed, the worm is arranged in the reducer assembly, and the input end of the worm is connected with the motor; the variable parameters mean that the device's external structure size and reduction ratio can be set according to needs. The present invention easily realizes different reduction ratios through the parameter design of the transmission pair, and at the same time, the three-axis support structure and the inner installation method with the column can ensure that the device can withstand large wind load overturning moment, axial force and radial force.

Description

A built-in sun tracking azimuth transmission device

technical field

The present invention relates to an azimuth transmission device, in particular to a built-in sun tracking azimuth transmission device.

Background technique

The azimuth transmission device is an important part of solar power generation, and it is the actuator that realizes high-precision tracking of the solar collector. The azimuth transmission device not only requires stable operation, high efficiency, low noise, and long life, but also requires the device not to interfere with the truss. Space movement, simple and clear appearance makes the overall structure of the rack clear.

At present, the azimuth transmission device of the dish solar energy is driven by a worm gear, and a slewing bearing is used to realize relative rotation between the two parts of the column and the grid frame. At the same time, it can withstand a certain axial force, radial force and wind load overturning moment. Gear reduction mechanism and three-stage reduction DC motor. However, the current slewing drive devices are all placed outside the top of the column, which takes up space and affects the overall design of the frame, and the motor and deceleration device are easily damaged by the environment. And the power generation system also has certain influence.

Contents of the invention

In order to solve the above-mentioned problems existing in the existing azimuth transmission device, the present invention provides a built-in sun tracking azimuth transmission device. The invention can place the azimuth transmission device, the motor, and the planetary gear reducer inside the column, fully utilizes the space inside the column, not only runs smoothly, has high efficiency, and has low noise, but also solves the problem of space occupation, making each device not easily affected by the environment. It will be damaged in advance due to impact, and also make the overall structure of the rack clear and beautiful.

The technical solution of the present invention to solve the above-mentioned technical problems is: comprising: a circular case cover, an internal tooth type four-point contact ball slewing bearing, a worm, a turbine worm-bevel gear reducer assembly, an output short shaft, the circular case cover It is fixed at the top position inside the hollow column. The reducer assembly is installed on the lower part of the circular box cover. The output short axis of the reducer assembly is upward, and the external gear is installed on the short axis. The external gear and the internal gear four-point contact ball turntable The bearings are meshed, the worm is arranged in the reducer assembly, and the input end of the worm is connected with the motor.

In the above-mentioned built-in sun tracking azimuth transmission device, the worm gear-bevel reducer assembly includes a worm gear, a worm, a first bevel gear, a second bevel gear, a long shaft, and a short shaft, and the worm is geared to the worm gear The turbine is fixed on one end of the long shaft, the other end of the long shaft is provided with a second bevel gear, the first bevel gear is fixed on the short shaft, and the first bevel gear meshes with the second bevel gear.

The invention has the advantages of: making full use of the space resources inside the column, avoiding the interference of the space movement of the truss, the column and the net frame, simplifying the truss structure and improving the strength and rigidity of the truss unit weight; effectively improving the work of the azimuth transmission device environment, improve the service life of the motor and planetary gear reducer; the device can easily achieve different reduction ratios through the design of the transmission pair parameters, and at the same time, the three-axis support structure and the inner installation method with the column can ensure that the device can withstand large wind loads Overturning moment, axial force and radial force.

Description of drawings

Figure 1 is an installation front view of the present invention.

Figure 2 is a top view of the present invention.

Fig. 3 is a left sectional view of the present invention.

Fig. 4 is a right sectional view of the present invention.

Fig. 5 is a sectional view of the short shaft installation of the present invention.

The markings in the figure are as follows: 1—internal gear four-point contact ball slewing bearing; 2—round box cover; 3—right end cover; 4—reducer assembly; 5—worm shaft; 6—left end cover; 7—upper end cover; 8—external gear; 9—the first bevel gear; 10—the second bevel gear; 11—the inner wall of the box cover; 12—the lower end cover of the worm; 13—the turbine; 14—the long shaft; 15—the roller bearing 1; 16—the roller Sub-bearing 2; 17—bush; 18—sleeve; 19—end cover of worm; 20—short shaft; 21—threaded hole.

Detailed ways

Referring to Figures 1-5, the present invention includes a circular box cover, an internal tooth type four-point contact ball slewing bearing (1), a worm (5), a worm gear-bevel gear reducer assembly 4, and an output short shaft 20. The shaped box cover is fixed at the top position inside the hollow column, the reducer assembly 4 is installed on the lower part of the circular box cover, the output short shaft 20 of the reducer assembly 4 is upward, and the external gear 8 is installed on the short shaft 20. The internal gear four-point contact ball slewing bearing 1 meshes, the worm 5 is arranged in the reducer assembly 4, and the input end of the worm 5 is connected with the motor. The worm gear-bevel gear reducer assembly 4 includes a worm gear 13, a worm 5, a first bevel gear 9, a second bevel gear 10, a long shaft 14, and a short shaft 20. The worm 5 is toothed with the worm gear 13, and the worm gear 13 One end of the major axis 14 is fixed, the other end of the major axis 14 is provided with a second bevel gear 10, the first bevel gear 9 is fixed on the minor axis 20, and the first bevel gear 9 meshes with the second bevel gear 10 at 90°. The bushing 17 is hollow cylindrical, the lower end extends inward to the same diameter as the short axis, the upper end extends outward and is fixed outside the box with bolts, and the lower end is against the outer end of the roller bearing 16, and there are 18 sets of sleeves Enter the short shaft 20 and resist the inner end of the roller bearing 15 and the roller bearing 16, and the end cover 7 fixes the outer end of the roller bearing 15 to realize the bushing 17, the sleeve 18, the short shaft 20, and the roller bearing 15 And the installation of roller bearing 16.

The working principle of the present invention is as follows: when working, the worm screw 5 is driven by the motor to rotate, thereby driving the turbine 13 engaged with it to rotate, the turbine 13 is fixedly connected with the major shaft 14 by a key, and when the turbine 13 rotates, the major shaft 14 is driven to rotate, and the The second bevel gear 10 at the other end of the long axis rotates, and drives the first bevel gear 9 meshing with it at 90° to rotate. The first bevel gear 9 is fixed by keys, bolts, washers and bushings 17 to drive the short shaft 20 to rotate. Therefore, the external gear on the other end of the short shaft 20 rotates and the internal gear four-point contact ball slewing bearing 1 meshing with it rotates.

The advantage of the present invention is that: in the working process, the device can not only meet the basic requirements of gear transmission, but also the internal structure of the reducer can make the input shaft and output shaft realize vertical parallelism during transmission, so that the transmission device, motor and automatic The first-stage reducer with the belt has enough space to be placed inside the hollow column, which perfectly utilizes the space resources inside the column and does not interfere with the spatial movement of the truss.

Claims (3)

1. A built-in sun tracking azimuth transmission device, characterized in that it includes a circular case cover, an internal tooth type four-point contact ball slewing bearing (1), a worm (5), and a worm gear-bevel gear reducer assembly ( 4), output short shaft (20), the circular box cover is fixed at the top position inside the hollow column, the reducer assembly (4) is installed on the lower part of the circular box cover, the output short shaft (20) of the reducer assembly (4) ) upward, and install the external gear (8) on the short shaft (20), the external gear (8) meshes with the internal tooth type four-point contact ball slewing bearing (1), and the worm (5) is arranged on the reducer assembly (4 ), the input end of the worm (5) is connected to the motor; the variable parameter means that the device’s overall structure size and reduction ratio can be set according to needs. 2. A built-in sun tracking azimuth transmission device according to claim 1, characterized in that: the worm gear-bevel gear reducer assembly (4) includes a turbine (13), a worm (5), a first Bevel gear (9), second bevel gear (10), long shaft (14), short shaft (20), the worm (5) is toothed with the worm gear (13), and the worm gear (13) is fixed on the long shaft (14 ), the other end of the major axis (14) is provided with a second bevel gear (10), the first bevel gear (9) is fixed on the minor axis (20), the first bevel gear (9) and the second bevel gear (10) Mesh at 90°. 3. A built-in sun tracking azimuth transmission device according to the requirements of claims 1 and 2, characterized in that the bushing (17), sleeve (18), short shaft (20), and the rollers Bearing 1 (15) and roller bearing 2 (16) are axially fixed, the bush (17) is hollow cylindrical, the lower end extends inward to the same diameter as the short shaft, and the upper end extends outward and is fixed with bolts Outside the box, and the lower end is against the outer end of the roller bearing (16), the sleeve (18) is inserted into the short shaft (20) and against the roller bearing (15), and the inner end of the roller bearing (16), And the end cover (7) fixes the outer end of the roller bearing (15) so as to realize its bushing (17), sleeve (18), short shaft (20), roller bearing (15) and roller bearing (16) Install.