Mechanical mechanism of variable pitch system training platform

Abstract

The utility model relates to a mechanical structure of a variable pitch system training platform. The mechanical structure comprises a rotation support and a rotation supporting bearing. The slewing bearing is arranged on the slewing support and comprises a fixing ring and a gear ring. The fixing ring is connected with the rotary support. And the gear ring and the fixed ring are coaxially arranged. Wherein the gear ring is connected with a driving device, the driving device is meshed with the gear ring and drives the gear ring to rotate so as to simulate a variable pitch control structure of the fan, and the output end of the driving device can be meshed with the gear ring through a flat key or a spline. The driving device comprises a reduction gearbox arranged on the driving support and a motor connected with the reduction gearbox, and the output end of the reduction gearbox is meshed with the gear ring. And a sensor and an induction block are respectively arranged on the fixed ring and the gear ring. Along with the rotation of the gear ring, the induction block can trigger the sensor to output a signal to simulate different states of the wind generating set. The variable pitch system practical training platform is small in size and can be conveniently arranged in a school workshop for teaching, and the learning cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of wind power generation technology, and in particular to the mechanical structure of a pitch system training platform. Background Technology

[0002] Wind energy, as a clean and renewable energy source, is receiving increasing attention from countries around the world. In the past five years, the global wind energy market has grown at an annual rate of 40%. It is projected that over the next 20-25 years, the global wind energy market will increase by 25% annually. As the wind power industry grows, related employment opportunities are also increasing, leading to a shortage of training resources and workstations for new employees.

[0003] Among them, the pitch system, as one of the core components of the control system of large wind turbine generator sets, plays a vital role in the safe, stable, and efficient operation of the unit. Due to the large overall size of wind turbine generators, with a rotor diameter of approximately 80 meters and a high installation height, as well as a tower height of approximately 80 meters, it is impossible to directly install the entire wind turbine generator inside a school or factory. This greatly limits the learning of the pitch system by students and new employees.

[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a mechanical structure for a pitch system training platform to facilitate learning and understanding of pitch systems.

[0006] The technical solution of this utility model is as follows:

[0007] A mechanical mechanism for a pitch system training platform includes: a slewing support; a slewing bearing mounted on the slewing support, comprising: a fixed ring connected to the slewing support; and a gear ring coaxially arranged with the fixed ring; wherein a sensor and a sensing block are respectively mounted on the fixed ring and the gear ring; the gear ring is connected to a driving device, the driving device engaging the gear ring and driving the gear ring to rotate.

[0008] A further technical solution is that the fixed ring is the outer ring of the slewing bearing, and the gear ring is the inner ring of the slewing bearing.

[0009] A further technical solution is that the sensor includes two proximity switches and two limit switches, and the sensor is set at a fixed angle along the circumference of the slewing bearing.

[0010] A further technical solution is that the sensor is disposed on the fixed ring, and the sensing block is disposed on the gear ring.

[0011] A further technical solution is that the fixed ring and the toothed ring are each provided with a plurality of positioning and mounting holes evenly distributed in the circumference, and the sensor and the sensing block are disposed on the fixed ring and the toothed ring through the positioning and mounting holes.

[0012] A further technical solution includes a mounting base and a drive bracket, wherein the drive bracket and the rotary bracket are mounted on the mounting base, and the drive device is mounted on the drive bracket.

[0013] A further technical solution is that a flat key is provided between the drive bracket and the mounting base.

[0014] A further technical solution is that the rotating bracket includes a support rod, one end of which is set on the mounting plane, and the other end of which is connected to the fixing ring; two support rods are provided, and the two support rods are respectively set on the radial sides of the fixing ring.

[0015] A further technical solution is that the rotary bracket also includes a clamping block, which is disposed on the mounting plane and clamps the fixed ring, and the clamping block clamps the lower part of the fixed ring along the axial direction of the fixed ring.

[0016] A further technical solution is that the driving device includes a reduction gearbox mounted on the driving bracket and a motor connected to the reduction gearbox, wherein the output end of the reduction gearbox meshes with the gear ring.

[0017] The beneficial technical effects of this utility model are as follows:

[0018] (1) The mechanical structure of the pitch system training platform in this utility model includes a slewing bearing. A drive device rotates the slewing bearing to simulate the pitch control structure of a wind turbine. Sensors and sensing blocks are installed on the slewing bearing. As the gear ring rotates, the sensing blocks trigger the sensor output signal, simulating different states of the wind turbine generator set. This pitch system training platform is small in size, making it easy to install in school workshops for teaching purposes and reducing learning costs.

[0019] (2) Further, the fixed ring is the outer ring of the slewing bearing, and the gear ring is the inner ring of the slewing bearing. In this way, the drive device extends into the interior of the slewing bearing shaft to mesh with the gear ring, reducing the volume of the pitch system training platform.

[0020] (3) Furthermore, the sensor includes two proximity switches and two limit switches. Different sensors are triggered by the sensing block to simulate multiple functions such as actual operation, simulated operation, fault and reset of the wind turbine generator set. Attached Figure Description

[0021] Figure 1 A three-dimensional structural diagram of the mechanical structure of the pitch system training platform of this utility model is shown.

[0022] Marked in the attached diagram:

[0023] 1. Mounting base; 11. Flat key; 12. Keyway; 2. Drive bracket; 3. Drive device; 31. Motor; 32. Gearbox; 4. Rotary bracket; 41. Support rod; 42. Diagonal brace; 43. Clamping block; 5. Rotary bearing; 51. Fixing ring; 52. Gear ring; 53. Positioning mounting hole; 61. Sensor; 62. Mounting bracket; 63. Sensing block. Detailed Implementation

[0024] To make the objectives, features, and advantages of this utility model more apparent and understandable, please refer to the accompanying drawings. It should be noted that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art in understanding and reading the content disclosed herein. They are not intended to limit the implementation conditions of this utility model and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to the size, without affecting the effects and objectives achieved by this utility model, should still fall within the scope of the technical content disclosed in this utility model.

[0025] In the description of this utility model, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] Figure 1 This diagram shows a three-dimensional structural schematic of the mechanical structure of the pitch system training platform of this invention. Please refer to it. Figure 1A mechanical mechanism for a pitch control system training platform includes a slewing support 4 and a slewing bearing 5. The slewing bearing 5 is mounted on the slewing support 4 and includes a fixed ring 51 and a gear ring 52. The fixed ring 51 is connected to the slewing support 4. The gear ring 52 and the fixed ring 51 are coaxially arranged. The gear ring 52 is connected to a drive device 3, which engages with and drives the gear ring 52 to rotate, simulating the pitch control structure of a wind turbine. The output end of the drive device 3 can engage the gear ring 52 via a key or spline. The drive device 3 includes a reduction gearbox 32 mounted on the drive support 2 and a motor 31 connected to the reduction gearbox 32. The output end of the reduction gearbox 32 engages with the gear ring 52. A sensor 61 and a sensing block 63 are respectively mounted on the fixed ring 51 and the gear ring 52. As the gear ring 52 rotates, the sensing block 63 can trigger the sensor 61 to output a signal, simulating different states of the wind turbine generator set 31. The pitch system training platform is small in size, making it easy to set up in school factories for teaching purposes and reducing learning costs.

[0027] Please refer to Figure 1 The fixed ring 51 is the outer ring of the slewing bearing 5, and the gear ring 52 is the inner ring of the slewing bearing 5. In this way, the drive device 3 extends into the interior of the slewing bearing shaft to mesh with the gear ring 52, reducing the volume of the pitch system training platform.

[0028] Preferably, sensor 61 includes two proximity switches and two limit switches, and sensor 61 is set at a fixed angle along the circumference of slewing bearing 5. Taking the horizontal diameter of slewing bearing 5 as a reference of 0°, the two proximity switches and two limit switches are set clockwise at 5°, 85°, 91°, and 95°. When gear ring 52 rotates, sensing block 63 triggers different sensors 61 to simulate multiple functions such as actual operation, simulated operation, fault detection, and reset of wind turbine generator set 31.

[0029] More preferably, the sensor 61 is mounted on the fixed ring 51, and the sensing block 63 is mounted on the gear ring 52. Since the sensor 61 requires a data cable to transmit signal and is not easily movable, it is more convenient to mount the sensing block 63 on the rotating gear ring 52.

[0030] More preferably, the fixed ring 51 and the gear ring 52 are each provided with a plurality of positioning mounting holes 53 evenly spaced circumferentially. The sensor 61 and the sensing block 63 are mounted on the fixed ring 51 and the gear ring 52 through the positioning mounting holes 53. A mounting bracket 62 is also provided, and the mounting bracket 62 and the sensing block 63 are mounted on the slewing bearing 5 by screws and the positioning mounting holes 53.

[0031] Please refer to Figure 1It also includes a mounting base 1 and a drive bracket 2. The drive bracket 2 and the slewing bracket 4 are mounted on the mounting base 1, and the drive unit 3 is mounted on the drive bracket 2. The two are fastened together by bolts. That is, the entire pitch system training platform is based on the mounting base 1 and is a whole, which facilitates the movement of the pitch system training platform and makes the structure of the pitch system training platform more compact.

[0032] Preferably, a flat key 11 is provided between the drive bracket 2 and the mounting base 1. Specifically, keyways 12 are respectively provided on the drive bracket 2 and the mounting base 1, and the flat key 11 simultaneously engages with the keyways 12 of both the drive bracket 2 and the mounting base 1, defining the relative installation position between the drive bracket 2 and the mounting base 1. Simultaneously, the flat key 11 and the keyways 12 also allow for quick positioning of the drive bracket 2 and the mounting base 1, improving the assembly efficiency of the drive bracket 2 and the mounting base 1.

[0033] Please refer to Figure 1 The rotary support 4 includes a support rod 41, one end of which is mounted on the mounting plane, and the other end of which is connected to a fixing ring 51. Thus, both ends of the support rod 41 are connected to the mounting base 1 and the fixing ring 51, respectively. The mounting base 1 is also equipped with a diagonal brace 42, one end of which is connected to the mounting base 1, and the other end of which is connected to the side of the support rod 41, increasing the support strength of the rotary support 4. Two support rods 41 are provided, and the two support rods 41 are respectively located on both radial sides of the fixing ring 51.

[0034] Preferably, the rotary support 4 further includes a clamping block 43, which is disposed on the mounting plane and clamps the fixing ring 51. The clamping block 43 clamps the lower part of the fixing ring 51 along the axial direction of the fixing ring 51. The rotary bearing 5 is completely fixed on the mounting base 1 by the support rod 41 and the clamping block 43, ensuring the stability of the mounting base 1 during operation.

[0035] The specific workflow of this utility model is as follows:

[0036] The operator controls the output torque of motor 31, which is transmitted to gear ring 52 through gearbox 32, driving gear ring 52 to rotate. During the rotation of gear ring 52, sensing block 63 fixed on gear ring 52 can trigger sensor 61 at different positions at different angles to output different electrical signals, simulating the entire working process of pitch control system and fully simulating angle-related faults of pitch system.

[0037] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0038] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A mechanical mechanism for a pitch system training platform, characterized in that, include: Rotary support; A slewing bearing, mounted on the slewing support, includes: A fixed ring is connected to the rotary bracket; The gear ring is coaxially arranged with the fixed ring; The fixed ring and the gear ring are respectively equipped with a sensor and a sensing block; the gear ring is connected to a driving device, which engages with the gear ring and drives the gear ring to rotate.

2. The mechanical mechanism of the pitch system training platform as described in claim 1, characterized in that: The fixed ring is the outer ring of the slewing bearing, and the gear ring is the inner ring of the slewing bearing.

3. The mechanical mechanism of the pitch system training platform as described in claim 1, characterized in that: The sensor includes two proximity switches and two limit switches, and the sensor is set at a fixed angle along the circumference of the slewing bearing.

4. The mechanical mechanism of the pitch system training platform as described in claim 1, characterized in that: The sensor is mounted on the fixed ring, and the sensing block is mounted on the gear ring.

5. The mechanical mechanism of the pitch system training platform as described in claim 1, characterized in that: The fixed ring and the gear ring are each provided with a plurality of positioning and mounting holes evenly spaced around their circumference. The sensor and the sensing block are mounted on the fixed ring and the gear ring through the positioning and mounting holes.

6. The mechanical mechanism of the pitch system training platform as described in claim 1, characterized in that: It also includes a mounting base and a drive bracket, the drive bracket and the rotary bracket being mounted on the mounting base, and the drive device being mounted on the drive bracket.

7. The mechanical mechanism of the pitch system training platform as described in claim 6, characterized in that: A flat key is provided between the drive bracket and the mounting base.

8. The mechanical mechanism of the pitch system training platform as described in claim 1, characterized in that: The rotating bracket includes a support rod, one end of which is set on the mounting plane, and the other end of which is connected to the fixing ring; two support rods are provided, and the two support rods are respectively set on the radial sides of the fixing ring.

9. The mechanical mechanism of the pitch system training platform as described in claim 1, characterized in that: The rotating bracket also includes a clamping block, which is disposed on the mounting plane and clamps the fixing ring. The clamping block clamps the lower part of the fixing ring along the axial direction of the fixing ring.

10. The mechanical mechanism of the pitch system training platform as described in claim 6, characterized in that: The drive device includes a gearbox mounted on the drive bracket and a motor connected to the gearbox, the output end of which meshes with the gear ring.

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