Spherical plastic bearing for solar photovoltaic tracking support

Abstract

The utility model provides a spherical plastic bearing for a solar photovoltaic tracking support, the spherical plastic bearing comprises a first end face and a second end face, and a polygonal cavity penetrating through the spherical plastic bearing is formed in the spherical plastic bearing from the first end face to the second end face; the first end face is provided with a first groove in the inner corner area of the polygonal cavity in a sinking mode, and the second end face is provided with a second groove in the inner corner area of the polygonal cavity in a sinking mode. The grooves are formed in the inner corner areas for avoiding treatment, so that the cracking phenomenon caused by insufficient strength of the inner corner areas can be avoided, and the effective contact area of the spherical plastic bearing and the main shaft is ensured on the premise that the cost is not increased and the overall strength of the bearing is not weakened; the spherical plastic bearing is ensured to stably operate in the full life cycle of the support, and meanwhile, the attractive design of the overall appearance of the spherical plastic bearing is considered.

Description

[Technical Field]

[0001] This utility model relates to the field of photovoltaic technology, specifically to a spherical plastic bearing for a solar photovoltaic tracking bracket. [Background Technology]

[0002] As one of the core technologies for improving photovoltaic power generation efficiency, photovoltaic tracking brackets have made significant progress in technological upgrades in recent years. Plastic bearings, as a key component enabling real-time light tracking, play a crucial role in the stable operation of the tracking bracket due to their wear resistance, self-lubrication, and corrosion resistance.

[0003] In existing technologies, compared to cylindrical plastic bearings, spherical plastic bearings, due to their omnidirectional rotational characteristics, meet the need for flexible adjustment in support structures and are being widely used. (See attached image.) Figure 1 As shown, the shape of existing spherical plastic bearings results in an excessively small minimum dimension A' at their end face, posing a risk of cracking during use. This affects the bearing's strength and service life, ultimately jeopardizing the normal operation of the tracking bracket. Current solutions include increasing the overall diameter or decreasing the overall width of the spherical bearing, both of which increase the minimum dimension of the bearing end face and prevent cracking. However, increasing the diameter inevitably leads to increased material usage in the plastic bearing, raising material costs. While reducing the overall width is more cost-effective, it reduces the contact area between the plastic bearing and the spindle, potentially causing uneven pressure distribution, accelerated wear of the plastic bearing, and a shortened service life.

[0004] In view of this, this case involves in-depth research into the aforementioned issues, which led to the formation of this case. [Utility Model Content]

[0005] This invention aims to solve the technical problems existing in existing spherical plastic bearings by providing a spherical plastic bearing for solar photovoltaic tracking brackets. By creating grooves in the thin-walled area for avoidance treatment, cracking caused by insufficient strength in the thin-walled area can be avoided. Without increasing costs or weakening the overall strength of the bearing, the effective contact area between the spherical plastic bearing and the main shaft is guaranteed. This ensures the stable operation of the spherical plastic bearing throughout the entire life cycle of the bracket while also taking into account the aesthetic design of the overall shape of the spherical plastic bearing.

[0006] This utility model is implemented as follows: a spherical plastic bearing for a solar photovoltaic tracking bracket, the spherical plastic bearing including a first end face and a second end face, the spherical plastic bearing having a polygonal cavity extending through the spherical plastic bearing from the first end face to the second end face; characterized in that: the first end face has a first groove recessed in the inner corner region of the polygonal cavity, and the second end face has a second groove recessed in the inner corner region of the polygonal cavity.

[0007] Furthermore, the spherical plastic bearing is spherical in shape.

[0008] Furthermore, the polygonal cavity includes multiple planes located on the inner wall of the spherical plastic bearing, with adjacent planes forming internal angles; multiple weight-reducing holes are provided on the planes.

[0009] Furthermore, the multiple weight-reducing holes are distributed at equal intervals.

[0010] Furthermore, the polygonal cavity can be any one of a regular octagonal through-hole, a regular heptagonal through-hole, a regular hexagonal through-hole, a regular pentagonal through-hole, or a regular quadrilateral through-hole.

[0011] The advantages of this utility model are as follows: By opening a first groove on the first end face of the thin-walled area of ​​the spherical plastic bearing, the design of multiple grooves makes the first end face resemble a petal, and the second end face is similar. The two sides work together to make the two end faces of the spherical plastic bearing open like a plum blossom. The opening is originally the thinnest area of ​​the spherical plastic bearing. By avoiding this opening, cracking caused by insufficient strength in the thin-walled area can be avoided. Without increasing costs or weakening the overall strength of the bearing, the effective contact area between the spherical plastic bearing and the spindle is guaranteed, solving the problem of cracking in the thin area of ​​the spherical plastic bearing. This ensures the stable operation of the spherical plastic bearing throughout the entire life cycle of the support while taking into account the aesthetic design of the overall shape of the spherical plastic bearing. [Attached Image Description]

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0013] Figure 1 This is a structural schematic diagram of an existing spherical plastic bearing.

[0014] Figure 2 This is a schematic diagram of the connection structure between the spherical plastic bearing and the spindle in Embodiment 1.

[0015] Figure 3 This is one of the top views of the spherical plastic bearing in Embodiment 1.

[0016] Figure 4 This is a schematic diagram of the spherical plastic bearing in Example 1.

[0017] Figure 5 This is a top view of the spherical plastic bearing in Example 1.

[0018] Figure 6 This is the second side view of the spherical plastic bearing in Embodiment 1.

[0019] Figure 7 This is an exploded view of the spherical plastic bearing in Example 2.

[0020] Figure 8This is a cross-sectional view of the spherical plastic bearing along the first snap-fit ​​unit in Embodiment 2.

[0021] Figure 9 This is a cross-sectional view of the spherical plastic bearing along the second snap-fit ​​unit in Embodiment 2.

[0022] Reference numerals: 1000 spherical plastic bearing, 2000 spindle, 100 first bearing assembly, 101 first snap-fit ​​part, 102 second snap-fit ​​part, 103 first semi-through groove, 104 first weight-reducing hole, 200 second bearing assembly, 201 third snap-fit ​​part, 202 fourth snap-fit ​​part, 203 second semi-through groove, 204 second weight-reducing hole, 11 first snap-fit ​​unit, 11 first connecting block, 12 first locking block, 13 first L-shaped hook groove, 14 oblique groove, 15 first arc transition surface, 16 first oblique boss, 21 second connecting block, 22 second locking block, 23 second L-shaped hook groove, 24 flat groove, 25 second arc transition surface, 26 second oblique boss, 3 first end face, 4 second end face, 5 polygonal cavity, 51 plane, 52 inner angle, 6 thick-walled area, 61 first groove, 7 thin-walled area, 71 second groove, 8 weight-reducing hole.

Detailed Implementation Methods

[0023] To better understand the technical solution of this utility model, the technical solution of this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] It should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing these embodiments and for 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. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.

[0025] Example 1

[0026] Please see Figures 1 to 6As shown, this embodiment provides a spherical plastic bearing 1000 for a solar photovoltaic tracking bracket. The spherical plastic bearing 1000 includes a first end face 3 and a second end face 4. A polygonal cavity 5 is formed through the spherical plastic bearing 1000 from the first end face 3 to the second end face 4. The polygonal cavity 5 includes multiple planes 51 located on the inner wall of the spherical plastic bearing 1000, and adjacent planes 51 form an interior angle 52. The first end face 3 has a first groove 61 recessed in the interior angle 52 region of the polygonal cavity, and the second end face 4 has a second groove 71 recessed in the interior angle 52 region of the polygonal cavity. The area between the plane 51 and the outer wall of the spherical plastic bearing is a thick-walled area 6; the area between the interior angle 52 and the outer wall of the spherical plastic bearing is a thin-walled area 7. The thin-walled area 7 has the first groove 61 formed on the first end face 3, and the thin-walled area 7 has the second groove 71 formed on the second end face 4. By creating a first groove 61 on the first end face 3 of the thin-walled region 7, the design of multiple grooves makes the first end face 3 resemble a flower petal. The second end face 4 is similar. The two faces work together to make the two ends of the spherical plastic bearing 1000 open like a plum blossom. The thin-walled region of the two end faces is originally the thinnest area of ​​the spherical plastic bearing. By creating grooves here to avoid cracking caused by insufficient strength of the thin-walled region 7, the effective contact area between the spherical plastic bearing 1000 and the spindle 2000 is guaranteed without increasing costs or weakening the overall strength of the bearing. This solves the problem of cracking in the thin area of ​​the spherical plastic bearing and ensures stable operation of the spherical plastic bearing throughout the entire life cycle of the support while taking into account the aesthetic design of the overall shape of the spherical plastic bearing.

[0027] In this embodiment, the spherical plastic bearing 1000 is spherical in shape.

[0028] In this embodiment, the polygonal cavity 5 is any one of a regular octagonal through-hole, a regular heptagonal through-hole, a regular hexagonal through-hole, a regular pentagonal through-hole, or a regular quadrilateral through-hole. The shape of the polygonal cavity 5 can be any polygon or irregular shape, adapted to the shape of the main shaft 2000.

[0029] In this embodiment, a plurality of weight-reducing holes 8 are provided on the plane 51 to reduce the amount of material used; the plurality of weight-reducing holes 8 are distributed at equal intervals.

[0030] Example 2

[0031] Please see Figures 1 to 9As shown, in this embodiment, the spherical plastic bearing includes a first bearing assembly 100 and a second bearing assembly 200 that can be interlocked. One end of the first bearing assembly 100 is fixed with a first latching portion 101, and the other end is fixed with a second latching portion 102. One end of the second bearing assembly 200 is fixed with a third latching portion 201 that engages with the first latching portion 101, and the other end is fixed with a fourth latching portion 202 that engages with the second latching portion 102. When the first bearing assembly 100 and the second bearing assembly 200 are assembled, the first latching portion 101 of the first bearing assembly 100 and the third latching portion 201 of the second bearing assembly 200 are engaged, as are the second latching portion 102 of the first bearing assembly 100 and the fourth latching portion 202 of the second bearing assembly 200.

[0032] In this embodiment, the first latching part 101 includes a first latching unit 1 and a second latching unit 2. The first latching unit 1 includes a first connecting block 11, a first latching block 12, and a first L-shaped hook groove 13. The surface of the first latching block 12 is formed with an oblique groove 14, a first arc transition surface 15, and a first oblique boss 16 from the inside to the outside. The second latching unit 2 includes a second connecting block 21, a second latching block 22, and a second L-shaped hook groove 23. The surface of the second latching block 22 is formed with a flat groove 24, a second arc transition surface 25, and a second oblique boss 26 from the inside to the outside. The first L-shaped hook groove 13 of the first latching part 101 is used to accommodate the second connecting block 21 and the second latching block 22 of the third latching part 201. The second L-shaped hook groove 23 is used to accommodate the first connecting block 11 and the first latching block 12 of the third latching part 201.

[0033] When the first latching part 101 and the third latching part 201 are assembled, there is an interference when the second oblique protrusion 26 of the first latching part 101 slides with the first oblique protrusion 16 of the third latching part 201. The sliding continues by relying on the elastic deformation of the plastic material itself until the second arc transition surface 25 of the first latching part 101 slides past the first arc transition surface 15 of the third latching part 201, at which point the interference disappears. At this time, the second oblique protrusion 26 of the first latching part 101 and the oblique groove 14 of the third latching part 201 are in close contact, and the oblique groove 14 of the first latching part 101 and the second oblique protrusion 26 of the third latching part 201 are in close contact. Similarly, the second latching part 102 and the fourth latching part 202 at the other end also engage with each other in this way. After engagement, the first bearing split 100 and the second bearing split 200 will not rotate relative to each other or move left and right relative to each other. The flat groove 24 of the first latching part 101 does not fit with the first oblique protrusion 16 of the third latching part 201. The first oblique protrusion 16 of the first latching part 101 does not fit with the flat groove 24 of the third latching part 201. This avoids the problem that if both parts fit together, the splicing surface of the bearing parts will be too constrained and unable to fit together.

[0034] In this embodiment, one side of the first connecting block 11 and the first locking block 12 is integrally formed with the first bearing split 100, and the other side is integrally formed with the second connecting block 21; the projection surface of the second locking block 22 on the first locking unit 1 is located in the area of ​​the first L-shaped hook groove 13. By integrally forming the first connecting block 11 and the first locking block 12 with the first bearing split 100 and the second connecting block 21, the structural integrity of the first locking part 101 is enhanced, and the stress concentration problem caused by the split connection is avoided. By designing the projection surface of the second locking block 22 on the first locking unit 1 to be located in the area of ​​the first L-shaped hook groove 13, the second locking block 22 and the first locking block 12 are vertically misaligned in the longitudinal space, which facilitates the pairwise engagement between the locking parts.

[0035] In this embodiment, the inclined groove 14 communicates with the first L-shaped hook groove 13, and the inclined groove 14 and the first L-shaped hook groove 13 are arranged facing the outside of the first bearing assembly 100; the flat groove 24 communicates with the second L-shaped hook groove 23, and the flat groove 24 and the second L-shaped hook groove 23 are arranged facing the inside of the first bearing assembly 100. The outward communication between the inclined groove 14 and the first L-shaped hook groove 13 forms a guide channel, which facilitates the sliding and positioning of the second locking block 22 of the third locking part 201; the inward communication between the flat groove 24 and the second L-shaped hook groove 23 forms a guide channel, which facilitates the sliding and positioning of the first locking block 12 of the third locking part 201. This complementary inner and outer guiding design enables the locking unit to have a limiting function, simplifying the assembly operation while significantly improving the locking reliability.

[0036] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. A spherical plastic bearing for a solar photovoltaic tracking bracket, the spherical plastic bearing comprising a first end face and a second end face, wherein a polygonal cavity penetrating the spherical plastic bearing is formed from the first end face toward the second end face; characterized in that: The first end face has a first groove recessed in the inner corner region of the polygonal cavity, and the second end face has a second groove recessed in the inner corner region of the polygonal cavity.

2. The spherical plastic bearing for a solar photovoltaic tracking bracket as described in claim 1, characterized in that: The spherical plastic bearing is spherical in shape.

3. The spherical plastic bearing for a solar photovoltaic tracking bracket as described in claim 1, characterized in that: The polygonal cavity includes multiple planes located on the inner wall of the spherical plastic bearing, with adjacent planes forming an interior angle; multiple weight-reducing holes are provided on the planes.

4. The spherical plastic bearing for a solar photovoltaic tracking bracket as described in claim 3, characterized in that: The multiple weight-reducing holes are distributed at equal intervals.

5. The spherical plastic bearing for a solar photovoltaic tracking bracket as described in claim 1, characterized in that: The polygonal cavity is any one of the following: a regular octagonal through-hole, a regular heptagonal through-hole, a regular hexagonal through-hole, a regular pentagonal through-hole, or a regular quadrilateral through-hole.

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