A multi-point drive tracking bracket drive shaft hanger structure

Abstract

This utility model discloses a multi-point drive tracking bracket transmission shaft hanger structure, comprising: a hanger with a main shaft hole and a transmission shaft hole arranged vertically, wherein the center of the main shaft hole and the center of the transmission shaft hole are on the same vertical line; a main shaft bushing disposed in the main shaft hole, with a main shaft center hole in its middle, through which the main shaft passes; and a transmission shaft bushing disposed in the transmission shaft hole, with a transmission shaft center hole in its middle, through which the transmission shaft passes. In this device, the hangers can stably support the rotation of the transmission shaft. The equal-spaced hangers on the transmission shaft solve the problem of sagging deformation caused by the transmission shaft's large span and its own weight, protecting the safety and reliability of the transmission shaft during operation. Due to this device, the cross-section of the transmission shaft can be optimized and reduced, and the weight of the transmission shaft can be reduced, resulting in a lightweight, low-cost, and highly stable and reliable transmission shaft structure.

Description

Technical Field

[0001] This utility model relates to a drive shaft support mechanism, and in particular to a drive shaft hanger structure for a multi-point drive tracking bracket. Background Technology

[0002] As photovoltaic power generation technology matures, in pursuit of better power generation solutions, various companies have introduced tracking bracket technology products using multi-point drive. Currently, there are two main types of multi-point drive solutions: mechanical linkage and electrical linkage. Because the mechanical linkage solution is more stable and has a lower failure rate, it is chosen by more manufacturers.

[0003] Photovoltaic power generation systems employing mechanical linkage multi-point drive tracking schemes can bring system stability and reduce support costs. However, these systems require synchronous transmission via drive shafts. Due to the large span, the drive shafts sag significantly under their own weight, leading to excessive deformation that can affect their torsional transmission performance. Currently, major manufacturers in the market do not have a satisfactory solution to this problem.

[0004] In summary, how to support the drive shaft and prevent it from sagging has become an urgent problem for researchers in this field. Utility Model Content

[0005] The technical problem to be solved by this utility model is: how to support the drive shaft and prevent it from sagging;

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] This utility model relates to a multi-point drive tracking bracket transmission shaft hanger structure, comprising: a hanger having a main shaft hole and a transmission shaft hole arranged vertically, wherein the center of the main shaft hole and the center of the transmission shaft hole are on the same vertical line; a main shaft bushing disposed in the main shaft hole, wherein a central hole for the main shaft is provided in its middle part, and the main shaft passes through the central hole for the main shaft bushing; and a transmission shaft bushing disposed in the transmission shaft hole, wherein a central hole for the transmission shaft is provided in its middle part, and the transmission shaft passes through the central hole for the transmission shaft bushing.

[0008] Furthermore, a limiting annular groove is formed radially outward on the inner wall of the spindle hole; a limiting protrusion is provided radially outward on the outer peripheral wall of the spindle bushing, and the limiting protrusion is disposed within the limiting annular groove.

[0009] Furthermore, the spindle bushing has a radially opening adjustment gap, which connects the outer peripheral wall of the spindle bushing and the central hole of the spindle.

[0010] Furthermore, the contour shape of the spindle center hole matches the outer contour shape of the spindle.

[0011] Furthermore, at both ends of the drive shaft bushing, a rim is provided extending radially outward, and the rim fits against the front or rear face of the hanger.

[0012] Furthermore, the hanger has a pre-positioning hole located above the drive shaft hole, and the lower part of the pre-positioning hole overlaps and communicates with the lower part of the drive shaft hole. The inner diameter of the pre-positioning hole is larger than the inner diameter of the drive shaft hole.

[0013] Furthermore, the length of the horizontal dividing line between the pre-positioning hole and the drive shaft hole is less than the inner diameter of the drive shaft hole.

[0014] The beneficial effects of this utility model are as follows: This utility model is a multi-point drive tracking bracket transmission shaft hanger structure; the hanger in this device can stably support the rotation of the transmission shaft; by setting a hanger at equal intervals on the transmission shaft, the problem of sagging deformation caused by the transmission shaft under its own weight due to excessive span is solved, thus protecting the safety and reliability of the transmission shaft during operation; due to the setting of this device, the cross-section of the transmission shaft can be optimized and reduced, and the weight of the transmission shaft can be reduced, resulting in a lightweight, low-cost, stable, and highly reliable transmission shaft structure. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a schematic diagram of the structure of Example 1;

[0017] Figure 2 yes Figure 1 A sectional view;

[0018] Figure 3 This is a front view of the hanger in Example 1;

[0019] Figure 4 This is a diagram showing the fit between the main shaft and the drive shaft in Example 2;

[0020] Figure 5 This is a structural schematic diagram of Example 2;

[0021] Figure 6 This is a diagram showing the fit between the main shaft and the drive shaft in Example 3;

[0022] Figure 7 This is a structural schematic diagram of Example 3;

[0023] Figure 8 It is a photovoltaic power generation system with a mechanical linkage multi-point drive tracking scheme. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0025] Figure 8 This photovoltaic power generation system, employing a mechanically linked multi-point drive tracking scheme, includes two columns 01 positioned on the left and right sides. A main shaft 02, horizontally rotating at the top of each column, houses a tracking bracket 03. A main drive unit 04 is mounted on the right column 01, while a secondary drive unit 05 is mounted on the left column 01. Torque is transmitted between the main drive unit 04 and the secondary drive unit 05 via a transmission shaft 06. This drives the tracking bracket 03 to rotate in accordance with the angle of sunlight, improving photoelectric conversion efficiency. However, due to the relatively long axial length of the transmission shaft 06 below the main shaft 02, the shaft 06 sags significantly under its own weight, potentially causing excessive deformation that could impair its torsional transmission performance.

[0026] Therefore, in order to solve the above problems, this application provides the following embodiments;

[0027] Example 1

[0028] This embodiment is a multi-point drive tracking bracket drive shaft hanger structure. See [link / reference] Figure 3 , Figure 3 This is a front view of the hanger 1. From top to bottom, the hanger 1 has a main shaft hole 11, a pre-positioning hole 12, and a drive shaft hole 13. The lines connecting the centers of these three holes are on the same vertical line. (See also...) Figure 1 A spindle bushing 2 is fitted inside the spindle hole 11, and a spindle center hole 21 is opened at the center of the spindle bushing 2. The spindle 02 passes through the spindle center hole 21. A drive shaft bushing 3 is installed inside the drive shaft hole 13, and a drive shaft center hole 31 is opened at the center of the drive shaft bushing 3. The drive shaft 06 passes through the drive shaft center hole 31. In this way, hangers 1 are evenly spaced on the spindle 02, and the drive shaft 06 is connected to the hangers 1, which prevents the drive shaft 06 from sagging. In addition, the spindle bushing 2 and the drive shaft bushing 3 are made of flexible material, which avoids hard contact between the spindle 02 or the drive shaft 06 and the hangers 1, thus avoiding wear.

[0029] Figure 8 The outer contour of the spindle 02 is a square structure, so the contour of the spindle center hole 21 is also a square structure to match the outer contour of the spindle 02; the spindle bushing 2 is not a closed part, and an adjustment gap 22 is provided at the lower center of the spindle bushing 2. The adjustment gap 22 connects the outer peripheral wall of the spindle bushing 2 and the spindle center hole 21. By pressing, the distance of the adjustment gap 22 is reduced, the outer diameter of the spindle bushing 2 is reduced, and the spindle bushing 2 is installed in the spindle hole 11.

[0030] Figure 1 A prepositioning hole 12 is provided above the drive shaft hole 13. The lower part of the prepositioning hole 12 overlaps and communicates with the upper part of the drive shaft hole 13. The inner diameter of the prepositioning hole 12 is larger than the inner diameter of the drive shaft hole 13. This arrangement facilitates the insertion of the drive shaft bushing 3 from the prepositioning hole and its pressing installation at the drive shaft hole 13. Figure 3 There is a dividing line 14 between the drive shaft hole 13 and the pre-positioning hole 12. The length of the dividing line 14 is less than the inner diameter of the drive shaft hole 13. In this way, when the drive shaft bushing 3 is installed in the drive shaft hole 13, the drive shaft bushing 3 is radially limited.

[0031] See Figure 2 , Figure 2 for Figure 1 The cross-sectional view shows that the outer peripheral wall of the main shaft bushing 2 is provided with a limiting protrusion 23, and the inner peripheral wall of the main shaft hole 11 is provided with a limiting ring groove 15 that cooperates with the limiting protrusion 23, which can limit the axial movement of the limiting ring groove 15 relative to the main shaft hole 11; the left and right sides of the transmission shaft bushing 3 are provided with a edging 32, which fits against the left end face and the right end face of the hanger 1, thus preventing the axial movement of the transmission shaft bushing 3 relative to the transmission shaft hole 13.

[0032] The specific installation method is as follows:

[0033] First, install the spindle bushing 2 into the spindle hole 11, and let the spindle 02 pass through the spindle center hole 21. Arrange multiple hangers 1 at equal intervals on the spindle 02. Next, fit the drive shaft bushing 3 at equal intervals onto the drive shaft 06 and position the drive shaft bushing 3 at the pre-positioning hole 12. Then, press down on the drive shaft 06 to move the drive shaft bushing 3 down to engage with the drive shaft hole 13. Finally, connect the end of the drive shaft 06 to the drive device. In this way, the drive shaft 06 is supported by multiple hangers 1, thus preventing the drive shaft 06 from sagging. Example 2

[0034] See Figure 4 , 5 Example 2 is largely the same as Example 1, except that the outline of the spindle center hole 21 is a circular structure to match the spindle 02, which has a circular cross-section. Example 3

[0035] See Figure 6 , 7 Example 2 is largely the same as Example 1, except that the outline of the spindle center hole 21 is a polygonal structure to match the spindle 02, which has a polygonal cross-section.

[0036] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A multi-point drive tracking bracket transmission shaft hanger structure, characterized in that, include: The hanger has a main shaft hole and a drive shaft hole arranged vertically, wherein the center of the main shaft hole and the center of the drive shaft hole are on the same vertical line; A spindle bushing is disposed inside the spindle hole, and a central spindle hole is provided in its middle part, through which the spindle passes. A drive shaft bushing is disposed inside the drive shaft hole, and a drive shaft center hole is provided in the middle of the bushing, through which the drive shaft passes.

2. The multi-point drive tracking bracket transmission shaft hanger structure according to claim 1, characterized in that, A limiting annular groove is formed radially outward on the inner wall of the spindle hole; The outer peripheral wall of the main shaft bushing extends radially outward and is provided with a limiting protrusion, which is disposed within the limiting annular groove.

3. The multi-point drive tracking bracket transmission shaft hanger structure according to claim 1, characterized in that, The spindle bushing has a radially opening adjustment gap, which connects the outer peripheral wall of the spindle bushing and the central hole of the spindle.

4. The multi-point drive tracking bracket transmission shaft hanger structure according to claim 1, characterized in that, The profile shape of the spindle center hole matches the outer profile shape of the spindle.

5. The multi-point drive tracking bracket transmission shaft hanger structure according to claim 1, characterized in that, Located at both axial ends of the drive shaft bushing, a edging is provided extending radially outward, and the edging fits against the end face of the hanger.

6. The multi-point drive tracking bracket transmission shaft hanger structure according to claim 5, characterized in that, The hanger has a pre-positioning hole located above the drive shaft hole, and the lower part of the pre-positioning hole overlaps and communicates with the lower part of the drive shaft hole. The inner diameter of the pre-positioning hole is larger than the inner diameter of the drive shaft hole.

7. The multi-point drive tracking bracket transmission shaft hanger structure according to claim 5, characterized in that, The length of the horizontal dividing line between the pre-positioning hole and the drive shaft hole is less than the inner diameter of the drive shaft hole.

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