Multi-point embedded photovoltaic tracking support bearing structure

Abstract

The utility model relates to solar photovoltaic power generation equipment technical field, concretely is a kind of multi-point embedded photovoltaic tracking support bearing structure, including bearing seat, bearing seat is closed circular ring body, radial section is circular;The main beam of tracking support is coaxially inserted in bearing seat;Multiple-point sliding assembly is equipped between main beam and bearing seat, and multiple-point sliding assembly is combined by several sliding blocks;Each sliding block is clamped and fixed at the corner of main beam;The outer side wall of each sliding block away from main beam is all set with arc sliding groove;Arc sliding groove straddles the outer surface of bearing seat and forms sliding fit, so that main beam can rotate around bearing seat axis;The utility model can distribute load, adapt to the geometric characteristics of main beam, compatible thermal deformation and be convenient for maintenance.

Description

Technical Field

[0001] This utility model relates to the field of solar photovoltaic power generation equipment technology, specifically a multi-point embedded photovoltaic tracking bracket bearing structure. Background Technology

[0002] Photovoltaic tracking brackets maximize solar irradiance absorption by adjusting the angle of photovoltaic modules in real time. The reliability of their rotating bearing structure directly affects the system's lifespan and tracking accuracy. Traditional bearing structures often employ centralized rolling bearings or single-point / double-point sliding bearing designs, which have significant drawbacks:

[0003] 1. Stress concentration and deformation problems: Rolling bearings or local sliding structures cause loads to concentrate at a limited number of contact points. Long-term operation can easily cause plastic deformation of the bearing housing, increasing rotational resistance or even jamming.

[0004] 2. Poor adaptability of irregular main beams: Mainstream support beams such as rectangular tubes and C-shaped steel have sharp edges and corners. Traditional bearings require additional complex clamping mechanisms, which increases manufacturing costs and makes it difficult to guarantee coaxiality.

[0005] 3. Insufficient adaptability to thermal expansion and contraction: Photovoltaic brackets are exposed to the outdoors for a long time, and the thermal deformation of the metal can easily cause internal stress in traditional rigid bearings, accelerating wear and even structural cracking.

[0006] 4. High maintenance costs: When the sliding surface is partially worn, the entire bearing needs to be replaced, resulting in low maintenance efficiency and significant downtime losses.

[0007] To overcome the above-mentioned defects, there is an urgent need for a bearing structure that can uniformly distribute loads, adapt to the geometry of the main beam, be compatible with thermal deformation, and be easy to maintain. Utility Model Content

[0008] The main technical problem to be solved by this utility model is to provide a multi-point embedded photovoltaic tracking bracket bearing structure that can uniformly distribute loads, adapt to the geometric characteristics of the main beam, be compatible with thermal deformation, and be easy to maintain.

[0009] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0010] A multi-point embedded photovoltaic tracking bracket bearing structure includes a bearing housing, which is a closed circular ring with a circular radial cross-section. The main beam of the tracking bracket is coaxially inserted into the bearing housing. A multi-point sliding assembly is provided between the main beam and the bearing housing, which is composed of several sliders. Each slider is clamped and fixed at the corner of the main beam. An arc-shaped sliding groove is provided on the outer side wall of each slider away from the main beam. The arc-shaped sliding groove straddles the outer surface of the bearing housing and forms a sliding fit, allowing the main beam to rotate around the axis of the bearing housing.

[0011] The following are further optimizations of the above technical solution by this utility model:

[0012] The plurality of sliders are distributed circumferentially along the bearing housing, and the geometric center of the distribution of the plurality of sliders coincides with the center of the bearing housing.

[0013] Further optimization: The inner sidewall of the slider is provided with a clamping groove, which is composed of two intersecting limiting surfaces set at an angle; the two limiting surfaces respectively abut against the two adjacent outer sidewalls at the edge of the main beam, forming a clamping structure that matches the geometric contour of the edge of the main beam.

[0014] Further optimization: The bottom profile of the arc-shaped sliding groove is a continuous arc-shaped surface, and its radius of curvature matches the curvature of the outer surface of the bearing seat.

[0015] Further optimization: The width of the arc-shaped sliding groove is greater than the diameter of the radial section of the bearing housing.

[0016] Further optimization: The depth of the arc-shaped sliding groove is greater than the radial cross-sectional radius of the bearing housing.

[0017] Further optimization: The inner surface of the arc-shaped sliding groove and the outer surface of the bearing seat are both provided with a wear-resistant coating.

[0018] Further optimization: A support component is welded to the bottom of the bearing seat, which is used to connect the column of the photovoltaic bracket.

[0019] Further optimization: The support member is a C-shaped steel structure; the support member has multiple waist-shaped adjustment holes evenly distributed along its height direction; the length direction of the waist-shaped adjustment holes is perpendicular to the length direction of the support member.

[0020] Beneficial effects:

[0021] In this invention, by distributing multiple sliders, the load of the main beam is evenly transferred to the entire circumference of the circular bearing seat, which greatly improves the rigidity and resistance to deformation, and effectively resists the effects of heavy loads and severe weather.

[0022] In this invention, the arc-shaped sliding groove on the slider forms a large-area sliding contact with the outer circle of the bearing seat, enabling the main beam to rotate smoothly around the bearing seat with low friction, meeting the requirements for precise tracking. At the same time, the multi-point design reduces pressure and driving energy consumption.

[0023] In this invention, the simplified structure eliminates the need for ball bearings / cages, resulting in good environmental tolerance and a low failure rate. The split slider design supports partial maintenance or replacement, significantly reducing maintenance costs and workload.

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0027] Figure 2 This is a schematic diagram of the slider in an embodiment of the present invention;

[0028] Figure 3 This is a structural schematic diagram of the slider at another angle in an embodiment of this utility model;

[0029] Figure 4 This is a schematic diagram of the usage state of Embodiment 1 of this utility model;

[0030] Figure 5 This is a schematic diagram of the usage state of Embodiment 2 of this utility model;

[0031] Figure 6 This is a schematic diagram of the usage state of Embodiment 3 of this utility model;

[0032] Figure 7 This is a schematic diagram of the usage state of Embodiment 4 of this utility model.

[0033] In the figure: 1-bearing housing; 2-main beam; 3-slider; 4-arc sliding groove; 5-clamping groove; 6-limiting surface; 7-support component; 8-waist-shaped adjustment hole. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Example 1: Reference Figures 1 to 4A multi-point embedded photovoltaic tracking bracket bearing structure includes a bearing seat 1, which is a closed circular ring with a circular radial cross-section; a main beam 2 of the tracking bracket is coaxially inserted into the bearing seat 1, and the main beam 2 has a rectangular cross-section; a multi-point sliding assembly is provided between the main beam 2 and the bearing seat 1, which is composed of four sliders 3; each slider 3 is clamped and fixed at the corner of the main beam 2; an arc-shaped sliding groove 4 is provided on the outer side wall of each slider 3 away from the main beam 2; the arc-shaped sliding groove 4 straddles the outer surface of the bearing seat 1 and forms a sliding fit, so that the main beam 2 can rotate around the axis of the bearing seat 1.

[0036] This design, firstly, involves the distributed arrangement of multiple sliders 3, which evenly transfers the load of the main beam 2 to the entire circumference of the circular bearing seat 1, significantly improving rigidity and resistance to deformation, and effectively resisting the effects of heavy loads and severe weather.

[0037] Secondly, the arc-shaped sliding groove 4 on the slider 3 forms a large-area sliding contact with the outer circle of the bearing seat 1, so as to realize the smooth rotation of the main beam 2 around the bearing seat 1 with low friction, meet the requirements of precise tracking, and at the same time, the multi-point design reduces pressure and driving energy consumption.

[0038] Furthermore, the simplified structure, without balls / cages, provides good environmental tolerance and a low failure rate; the split slider design supports partial maintenance or replacement, significantly reducing maintenance costs and workload.

[0039] The four sliders 3 are evenly distributed around the bearing seat 1, and the geometric center of the distribution of the four sliders 3 coincides with the center of the bearing seat 1.

[0040] This design, with its circumferential distribution and geometric center coinciding with the center of the bearing housing 1, allows multiple sliders 3 to share external forces (especially radial loads) evenly, avoiding stress concentration and significantly improving load-bearing capacity. At the same time, it ensures symmetrical and balanced force on rotating components, effectively reducing vibration and sway, and improving operational stability and accuracy. In addition, uniform force distribution also makes the wear of each slider 3 more consistent, extending the overall service life and enhancing the rigidity and stability of the system.

[0041] The inner sidewall of the slider 3 is provided with a clamping groove 5, which is composed of two intersecting limiting surfaces 6 arranged at an angle; the two limiting surfaces 6 respectively abut against the two adjacent outer sidewalls at the edge of the main beam 2, forming a clamping structure that matches the geometric contour of the edge of the main beam 2.

[0042] This design, through the clamping groove 5 formed by two intersecting limiting surfaces 6, precisely matches the angular contour of the main beam 2, forming a geometric self-locking structure, realizing the rapid positioning and stable clamping of the main beam 2; the double-sided contact significantly increases the force-bearing area, disperses local stress, and avoids deformation or wear caused by stress concentration; at the same time, it effectively restricts the radial and circumferential displacement degrees of freedom of the main beam 2, enhances the system rigidity and anti-eccentric load capacity, and ensures operational stability.

[0043] The bottom profile of the arc-shaped sliding groove 4 is a continuous arc-shaped surface, and its radius of curvature matches the curvature of the outer surface of the bearing seat 1.

[0044] This design ensures that the bottom contour of the arc-shaped sliding groove 4 is precisely matched with the curvature of the outer surface of the bearing housing 1, thus ensuring that the slider 3 and the bearing housing 1 form a continuous and stable surface contact, significantly reducing contact stress and dispersing the load. At the same time, it eliminates motion interference, allowing the slider 3 to slide smoothly along the predetermined trajectory, reducing friction and wear, and improving motion accuracy and lifespan. In addition, the curved surface fitting design can adapt to the slight deformation or assembly error of the bearing housing 1, enhancing the reliability of the system.

[0045] The width of the arc-shaped sliding groove 4 is greater than the diameter of the radial section of the bearing seat 1.

[0046] The depth of the arc-shaped sliding groove 4 is greater than the radial cross-sectional radius of the bearing seat 1.

[0047] This design, with the width of the arc-shaped sliding groove 4 being greater than the diameter of the bearing housing 1 and the depth of the groove being greater than the radius of the bearing housing 1, provides a dynamic adjustment clearance for the bearing housing 1 within the arc-shaped sliding groove 4. This not only compensates for manufacturing and assembly errors but also adapts to elastic deformation and thermal expansion under load; at the same time, it retains sufficient lubrication space to reduce friction and wear.

[0048] The inner surface of the arc-shaped sliding groove 4 and the outer surface of the bearing seat 1 are both provided with a wear-resistant coating.

[0049] This design significantly reduces the coefficient of friction and wear rate of the sliding contact surface through the wear-resistant coating on both sides, extending the life of key moving parts; at the same time, it enhances the surface's resistance to crushing and fretting wear, maintains the stability of clearance accuracy, reduces maintenance frequency, and provides continuous protection under harsh conditions such as high temperature and heavy load, thus comprehensively improving system reliability.

[0050] The bearing seat 1 has a support member 7 welded to its bottom, which is used to connect the column of the photovoltaic bracket.

[0051] The support member 7 is a C-shaped steel structure; the support member 7 has a plurality of waist-shaped adjustment holes 8 evenly opened along its height direction; the length direction of the waist-shaped adjustment holes 8 is perpendicular to the length direction of the support member 7.

[0052] This design has several advantages. First, the C-shaped steel channel section gives it a high moment of inertia, enabling it to achieve strong bending resistance with a small amount of material, balancing strength and lightweight, and reducing costs. At the same time, its structure can also evenly distribute the load, improving the overall load-bearing capacity and resistance to deformation.

[0053] Secondly, the waist-shaped adjustment hole 8 allows for fine-tuning of the horizontal level of the connecting bolts, compensating for construction errors and adapting to complex terrain; the waist-shaped adjustment hole 8, distributed along the height, can flexibly adjust the height of the bearing seat 1 to suit different column specifications and photovoltaic panel tilt angles; at the same time, the movable space inside the waist-shaped adjustment hole 8 can buffer dynamic loads, reduce stress concentration, and facilitate component maintenance and replacement.

[0054] Example 2: Reference Figure 5 A multi-point embedded photovoltaic tracking bracket bearing structure, different from Embodiment 1, in this embodiment the main beam 2 has a hexagonal cross section with six corners, the multi-point sliding component is composed of six sliders 3, each slider 3 is clamped and fixed at the corner of the main beam 2, the six sliders 3 are evenly distributed around the bearing seat 1, and the geometric center of the distribution of the six sliders 3 coincides with the center of the bearing seat 1.

[0055] Example 3: Reference Figure 6 A multi-point embedded photovoltaic tracking bracket bearing structure, different from Embodiment 2, in this embodiment the multi-point sliding component is composed of four sliders 3, each slider 3 is clamped and fixed at the corresponding corner of the main beam 2, the four sliders 3 are distributed around the bearing seat 1, and the geometric center of the distribution of the four sliders 3 coincides with the center of the bearing seat 1.

[0056] Example 4: Reference Figure 7 A multi-point embedded photovoltaic tracking bracket bearing structure, different from Embodiment 3, in this embodiment the multi-point sliding component is composed of three sliders 3, each slider 3 is clamped and fixed at the corresponding corner of the main beam 2, the three sliders 3 are evenly distributed around the bearing seat 1, and the geometric center of the distribution of the three sliders 3 coincides with the center of the bearing seat 1.

[0057] In addition to the above embodiments, the main beam 2 can also adopt an octagonal or I-shaped cross section: the octagonal main beam 2 is supported by six to eight sliders 3 in the full circumference, and the I-shaped main beam 2 is supported by four to six sliders 3 holding the flange corners. The number and layout of sliders 3 can be adjusted according to the load requirements to achieve a high-rigidity, low-friction photovoltaic tracking bracket bearing structure.

[0058] For those skilled in the art, any changes, modifications, substitutions, and variations made to the implementation methods without departing from the principles and spirit of this utility model, based on the teachings of this utility model, still fall within the protection scope of this utility model.

Claims

1. A multi-point embedded photovoltaic tracking support bearing structure comprising a bearing housing (1), characterized in that: The bearing housing (1) is a closed circular ring with a circular radial section; the main beam (2) of the tracking bracket is coaxially inserted into the bearing housing (1); a multi-point sliding assembly is provided between the main beam (2) and the bearing housing (1), which is composed of several sliders (3); each slider (3) is clamped and fixed at the corner of the main beam (2); an arc-shaped sliding groove (4) is provided on the outer side wall of each slider (3) away from the main beam (2); the arc-shaped sliding groove (4) straddles the outer surface of the bearing housing (1) and forms a sliding fit, so that the main beam (2) can rotate around the axis of the bearing housing (1).

2. A multi-point embedded photovoltaic tracking support bearing structure according to claim 1, characterized in that: Multiple sliders (3) are distributed around the bearing housing (1) in the circumference, and the geometric center of the distribution of multiple sliders (3) coincides with the center of the bearing housing (1).

3. A multi-point embedded photovoltaic tracking support bearing structure according to claim 1 or 2, characterized in that: The inner sidewall of the slider (3) is provided with a clamping groove (5), which is composed of two intersecting limiting surfaces (6) set at an angle; the two limiting surfaces (6) respectively abut against the two adjacent outer sidewalls at the edge of the main beam (2) to form a clamping structure that matches the geometric contour of the edge of the main beam (2).

4. A multi-point embedded photovoltaic tracking support bearing structure according to claim 1, characterized in that: The bottom profile of the arc-shaped sliding groove (4) is a continuous arc surface, and its radius of curvature matches the curvature of the outer surface of the bearing seat (1).

5. A multi-point embedded photovoltaic tracking support bearing structure according to claim 1 or 4, characterized in that: The width of the arc-shaped sliding groove (4) is greater than the diameter of the radial section of the bearing seat (1).

6. A multi-point embedded photovoltaic tracking support bearing structure according to claim 5, characterized in that: The depth of the arc-shaped sliding groove (4) is greater than the radial cross-sectional radius of the bearing seat (1).

7. A multi-point embedded photovoltaic tracking support bearing structure according to claim 1, characterized in that: The inner surface of the arc-shaped sliding groove (4) and the outer surface of the bearing seat (1) are both provided with wear-resistant coatings.

8. A multi-point embedded photovoltaic tracking support bearing structure according to claim 1, characterized in that: The bearing housing (1) has a support component (7) welded to its bottom. The support component (7) is used to connect the column of the photovoltaic bracket.

9. The bearing structure of a multi-point embedded photovoltaic tracking bracket according to claim 8, characterized in that: The support member (7) is a C-shaped steel structure; the support member (7) has multiple waist-shaped adjustment holes (8) evenly opened along its height direction; the length direction of the waist-shaped adjustment holes (8) is perpendicular to the length direction of the support member (7).

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