Bearing structure with damping and photovoltaic tracking support

Abstract

A bearing structure with damping and a photovoltaic tracking support. The bearing structure with damping comprises a damping inner ring (110) and a first end cover (120). The damping inner ring (110) comprises a main body (111) and a first damping ring (114) fixedly connected to the main body (111). The first damping ring (114) extends in the axial direction, and the main body (111) is used for mounting a rotating shaft. The first end cover (120) comprises an end cover portion (121) and a second damping ring (122) fixedly connected to the end cover portion (121). The second damping ring (122) extends in the axial direction. The first damping ring (114) and the second damping ring (122) are inserted into each other to form a first damping gap (151). The first damping gap (151) is used for accommodating a damping liquid. The bearing structure has low costs and good damping effect.

Description

A bearing structure with damping and photovoltaic tracking bracket

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] The present invention claims priority to Chinese application No. 202310794124.0, filed with the Patent Office of China on June 30, 2023, entitled “A bearing structure with damping and a photovoltaic tracking bracket”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present invention relates to the technical field of photovoltaic structures, and in particular to a bearing structure with damping and a photovoltaic tracking bracket. Background Art

[0004] Photovoltaic tracking brackets are generally set up outdoors to support photovoltaic modules. They will encounter various weather conditions during use. Due to their long span, photovoltaic tracking brackets are susceptible to wind-induced disasters such as buffeting, vortex vibration, and flutter when encountering strong winds, which may cause damage to the photovoltaic tracking brackets and the photovoltaic modules installed on them.

[0005] At present, in order to improve this problem, some manufacturers have added damping rods on both sides of the main square tube (also known as the main beam) of the tracking bracket to provide a reaction force to resist wind pressure. However, this method is inefficient and slow to respond, and is prone to instability and failure when the wind load is too large. Some manufacturers also resist wind pressure by installing dampers on the driving parts that drive the main square tube to rotate. For example, the Chinese invention application with application number 201811629328.4, entitled Pin-Rod Viscous Sliding Bearing Damper, but this damper generates damping by installing a large number of pins and friction with silicone oil, resulting in production costs and assembly difficulties.

[0006] Summary of the Invention

[0007] The object of the present invention is to provide a bearing structure with damping, which can improve the problems of low economy and difficult assembly in the prior art.

[0008] Another object of the present invention is to provide a photovoltaic tracking bracket that can improve the problems of low economy and difficult assembly in the prior art.

[0009] The embodiments of the present invention can be implemented in the following ways:

[0010] A bearing structure with damping, the bearing structure with damping having an axial direction, comprising: a damping inner ring, the damping inner ring comprising a main body and a first damping ring fixedly connected to the main body, the first damping ring extending along the axial direction; the main body is used to mount a moving shaft; and

[0011] a first end cover, the first end cover comprising an end cover portion and a second damping ring fixedly connected to the end cover portion; the second damping ring extends along the axial direction;

[0012] Wherein, the first end cover is rotatably matched with the damping inner ring; the first damping ring and the second damping ring are plugged into each other, and the first damping ring and the second damping ring form a first damping gap; the first damping gap is used to accommodate damping fluid.

[0013] Optionally, the number of the first damping ring and the number of the second damping ring are both multiple, and the multiple first damping rings and the multiple second damping rings are distributed in sequence along the radial direction of the bearing structure with damping, and the multiple first damping rings and the multiple second damping rings are staggered.

[0014] Optionally, the first damping ring and the main body are an integral structure; and / or,

[0015] The second damping ring and the end cover are an integral structure.

[0016] Optionally, the damped bearing structure further includes a bearing seat, the first end cover is arranged between the bearing seat and the damping inner ring, and the first end cover is fixedly connected to the bearing seat.

[0017] Optionally, a pressure valve hole communicating with the first damping gap is provided on the bearing seat.

[0018] Optionally, a second damping gap is formed between the first damping ring and the bearing seat, the second damping gap is communicated with the first damping gap, and the second damping gap is used to accommodate the damping fluid.

[0019] Optionally, the end cover portion has a first limiting step protruding radially outward, and the first limiting step abuts against one axial end of the bearing seat.

[0020] Optionally, the main body includes a dynamic shaft mounting portion and a raised portion arranged on the outer peripheral surface of the dynamic shaft mounting portion, and the first damping ring is arranged on one axial side of the raised portion; the damped bearing structure also includes a second end cover, the second end cover is fixedly connected to the bearing seat, and the second end cover and the first end cover are respectively located on both axial sides of the raised portion.

[0021] Optionally,

[0022] A first sealing ring is provided between the second end cover and the bearing seat; an end surface of the second end cover abuts against one axial end of the bearing seat, and the first sealing ring is located between the end surface of the second end cover and the bearing seat;

[0023] A second sealing ring is disposed between the second end cap and the drive shaft mounting portion; the inner circumferential surface of the second end cap is rotationally engaged with the outer circumferential surface of the drive shaft mounting portion, and the second sealing ring is located between the inner circumferential surface of the second end cap and the outer circumferential surface of the drive shaft mounting portion. Optionally, the damped bearing structure further includes a first sleeve, which is disposed radially outward of the raised portion and located between the bearing seat and the raised portion to ensure rotational engagement between the bearing seat and the damping inner ring.

[0024] Optionally, the bearing structure with damping further includes a fourth sealing ring; the fourth sealing ring is located between the inner circumferential surface of the bearing seat and the outer circumferential surface of the first end cover.

[0025] Optionally, the bearing structure with damping further includes a second sleeve, which is sleeved on the main body and located between the main body and the end cover, so that the first end cover and the damping inner ring are rotatably matched;

[0026] The axial ends of the second sleeve are respectively in abutment with the damping inner ring and the first end cover to limit the axial positions of the damping inner ring and the first end cover.

[0027] Optionally, a second limiting step is provided at the radial inner end of the first end cover, and one axial end of the second sleeve abuts against the second limiting step for limiting position; a third sealing ring is provided between the second limiting step and the main body.

[0028] A photovoltaic tracking bracket comprises a column, a moving shaft and the above-mentioned bearing structure with damping. The moving shaft is used to install photovoltaic components, and the moving shaft is rotatably mounted on the column through the bearing structure with damping.

[0029] The beneficial effects of the damped bearing structure and photovoltaic tracking bracket provided by the embodiments of the present invention include:

[0030] The damped bearing structure provided by an embodiment of the present invention has an axial orientation and includes a damping inner ring and a first end cap. The damping inner ring includes a main body and a first damping ring fixedly connected to the main body. The first damping ring extends axially, and the main body is used to mount the moving shaft. The first end cap includes an end cap portion and a second damping ring fixedly connected to the end cap portion. The second damping ring extends axially. The first end cover is rotatably matched with the damping inner ring, and the first damping ring is plugged into the second damping ring to form a first damping gap through the first damping ring and the second damping ring. The first damping gap is used to accommodate damping fluid. Since the first damping ring and the second damping ring are annular, the first damping gap formed in this way is an axially distributed ring around the bearing structure with damping. Since the main activity of the photovoltaic tracking bracket when it suffers from wind-induced disasters is rotation around the axis of the shaft, the direction of this movement is consistent with the movement direction of the damping fluid relative to the first damping ring in the first damping gap. Therefore, in windy weather, the bearing structure with damping can generate sufficient damping force to resist wind pressure. At the same time, it has the technical effects of simple structure, low cost, good economy and easy assembly.

[0031] An embodiment of the present invention also provides a photovoltaic tracking bracket, which includes the above-mentioned bearing structure with damping. Therefore, when encountering strong winds, the bearing structure with damping can generate sufficient damping force to resist wind pressure. At the same time, it has the beneficial effects of simple structure, low cost, good economy and easy assembly.

[0032] Summary of the Figures

[0033] The above and other features, properties and advantages of the present invention will become more apparent through the following description in conjunction with the accompanying drawings and embodiments, in which:

[0034] FIG1 shows a schematic diagram of the overall structure of a bearing structure with damping according to one aspect of the present invention;

[0035] FIG2 shows an exploded structural schematic diagram of a bearing structure with damping according to one aspect of the present invention;

[0036] FIG3 shows a schematic cross-sectional view of a bearing structure with damping according to one aspect of the present invention;

[0037] FIG4 shows a schematic cross-sectional view of a bearing structure with damping according to one aspect of the present invention from another perspective;

[0038] FIG5 shows a schematic cross-sectional structure diagram of a damping inner ring provided according to one aspect of the present invention;

[0039] FIG6 shows a schematic cross-sectional structural diagram of a first end cover provided according to one aspect of the present invention.

[0040] Reference numerals:

[0041] 100-bearing structure with damping; 110-damping inner ring; 111-main body; 112-moving shaft mounting portion; 113-raised portion; 114-first damping ring; 115-through hole; 120-first end cover; 121-end cover portion; 122-second damping ring; 123-first limiting step; 124-second limiting step; 130-bearing seat; 131-pressure valve hole; 140-second end cover; 151-first damping gap; 152-second damping gap; 153-first shaft sleeve; 154-second shaft sleeve; 155-first sealing ring; 156-second sealing ring; 157-third sealing ring; 158-fourth sealing ring.

[0042] Specific embodiments of the present invention

[0043] The present invention is further described below in conjunction with specific implementation methods and accompanying drawings. More details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can obviously be implemented in a variety of other ways different from the description. Those skilled in the art can make similar generalizations and deductions based on actual application situations without violating the connotation of the present invention. Therefore, the scope of protection of the present invention should not be limited by the content of this specific implementation method.

[0044] For example, a description later in the specification of a first feature being formed above or on a second feature may include an embodiment in which the first and second features are directly connected, or an embodiment in which an additional feature is formed between the first and second features, thereby eliminating the need for a direct connection between the first and second features. Furthermore, when a first element is described as being connected to or coupled to a second element, the description includes embodiments in which the first and second elements are directly connected or coupled to each other, as well as embodiments in which the first and second elements are indirectly connected or coupled to each other using one or more other intervening elements.

[0045] Figure 1 illustrates the overall structure of a damped bearing structure 100 according to this embodiment, Figure 2 illustrates an exploded view of the damped bearing structure 100 according to this embodiment, and Figure 3 illustrates a cross-sectional view of the damped bearing structure 100 according to this embodiment. Referring to Figures 1-3 , embodiments of the present invention provide a damped bearing structure 100 and, accordingly, a photovoltaic tracking bracket (not shown).

[0046] The photovoltaic tracking bracket includes a damped bearing structure 100, a column, and a dynamic shaft. The dynamic shaft, also known as a main square tube or main beam, is used to mount photovoltaic modules. The dynamic shaft is rotatably mounted on the column via the damped bearing structure 100. During installation, the column is fixed to the ground where the photovoltaic system is deployed, providing rotational support for the dynamic shaft and the photovoltaic modules mounted on it.

[0047] The damped bearing structure 100 has an axial orientation and includes a damping inner ring 110 and a first end cap 120. The damping inner ring 110 includes a main body 111 and a first damping ring 114 fixedly connected to the main body 111. The first damping ring 114 extends axially, and the main body 111 is used to mount the driving shaft. The first end cap 120 includes an end cap portion 121 and a second damping ring 122 fixedly connected to the end cap portion 121. The second damping ring 122 extends axially. The first end cap 120 rotatably engages with the damping inner ring 110, and the first damping ring 114 and the second damping ring 122 are plugged into each other. A first damping gap 151 is formed by the first damping ring 114 and the second damping ring 122. The first damping gap 151 is used to accommodate damping fluid.

[0048] Figure 4 shows the cross-sectional structure of the damped bearing structure 100 provided in this embodiment from another perspective. Specifically, the cross-sectional structure shown in Figure 4 is obtained by plane cross-section perpendicular to the axis L of the damped bearing structure 100, and the cross-sectional structure shown in Figure 3 is obtained by plane cross-section through the axis of the damped bearing structure 100. Referring to Figures 1-4 , since the first damping ring 114 and the second damping ring 122 are annular, the first damping gap 151 formed thereby is annular and distributed axially around the bearing structure 100 with damping. Since the photovoltaic tracking bracket primarily rotates around the axis of the shaft when subjected to wind damage, this movement is consistent with the movement direction of the damping fluid relative to the first damping ring 114 within the first damping gap 151. This ensures the real-time generation of the damping force, avoiding the risk of damage caused by delayed damping force when resisting wind resistance. Furthermore, since the first damping gap 151 is annular and the direction of damping force generation is consistent with the bracket's rotation direction, damping force can be generated simultaneously at various locations on the first damping ring 114 to increase the magnitude of the damping force. Therefore, in windy weather, the damping bearing structure 100 can generate a sufficiently large damping force to counteract wind pressure, while also exhibiting the advantages of simple structure, low cost, good economy, and ease of assembly. Furthermore, when the damped bearing structure 100 is applied to a photovoltaic tracking bracket, since the damped bearing structure 100 can generate a sufficiently large damping force in real time, it can effectively reduce shock and resist wind pressure when the photovoltaic tracking bracket is subjected to strong winds and other conditions, thereby helping to improve the operating stability of the photovoltaic tracking bracket.

[0049] Figure 5 shows a schematic cross-sectional view of the damping inner ring 110 provided in this embodiment. Referring to Figures 1-5 , in this embodiment, the damping inner ring 110 includes a main body 111 and a first damping ring 114 disposed on the main body 111. Specifically, the main body 111 includes a cylindrical drive shaft mounting portion 112, with a through hole 115 defined at its center for the drive shaft to pass through. The main body 111 also includes an annular raised portion 113 protruding from the outer circumference of the drive shaft mounting portion 112. The first damping ring 114 is disposed axially on one side of the raised portion 113.

[0050] Optionally, the first damping ring 114 and the main body 111 are integrally formed. This further simplifies the structure, helping to reduce costs and improve economic efficiency. Furthermore, it ensures positional stability between the first damping ring 114 and the main body 111, helping to maintain the stability of the first damping gap 151 and, in turn, the damping force. Optionally, the first damping ring 114 and the main body 111 can be integrally formed by machining or welding.

[0051] There are multiple first damping rings 114, which are spaced apart and distributed radially along the raised portion 113. That is, the multiple first damping rings 114 are disposed on a side wall of the raised portion 113 where it mates with the first end cap 120. On this wall, along the radially outward direction of the raised portion 113, the radial dimension of the first damping ring 114 located radially inward is smaller than the radial dimension of the first damping ring 114 located radially outward. Optionally, in this embodiment, there are three first damping rings 114, the innermost of which is connected to the outer circumferential surface of the driving shaft mounting portion 112. In other words, the innermost first damping ring 114 can also be considered to be a protrusion from the outer circumferential surface of the driving shaft mounting portion 112.

[0052] It should be noted that, in this embodiment, the components of the damped bearing structure 100 are coaxially arranged, that is, the axis of each component coincides with the axis L of the damped bearing structure 100. In other words, the "axial direction" of a component mentioned in the description of this embodiment can be regarded as the extension direction of the axis L. At the same time, the "radial dimension" mentioned later refers to the distance between the component and the axis L. Moreover, in the description of this embodiment, "inside" and "outside" refer to directions relative to the axis L. For example, the inside is the side radially close to the axis L, and the outside is the side radially away from the axis L.

[0053] Figure 6 shows a schematic cross-sectional view of the first end cap 120 provided in this embodiment. Referring to Figures 1-6, in this embodiment, the first end cap 120 comprises an end cap portion 121 and a second damping portion. The end cap portion 121 is an annular structure that is sleeved onto the drive shaft mounting portion 112 and rotatably engaged therewith. The second damping portion is disposed axially on one side of the end cap portion 121. As the first end cap 120 is axially inserted into the damping inner ring 110, the second damping portion engages with the first damping portion to form a first damping gap 151.

[0054] Optionally, the second damping ring 122 and the end cover 121 are integrally formed, thereby further simplifying the structure, helping to reduce costs and improve economic efficiency. This also ensures positional stability between the second damping ring 122 and the end cover 121, helping to maintain the stability of the first damping gap 151 and, in turn, the damping force. Optionally, the second damping ring 122 and the end cover 121 can be integrally formed by machining or welding.

[0055] There are multiple second damping rings 122, spaced radially apart along the end cap 121. Specifically, along the radially outward direction of the side wall of the end cap 121 where it engages with the raised portion 113, the radial dimensions of the second damping ring 122 located radially inward are smaller than those of the second damping ring 122 located radially outward. The multiple second damping rings 122 are interlaced with the multiple first damping rings 114, thereby forming a first damping gap 151 having a serpentine cross-section as shown in FIG3 , formed by the first damping rings 114 and the second damping rings 122. Optionally, in this embodiment, there are two second damping rings 122.

[0056] In this embodiment, the damped bearing structure 100 further includes a second sleeve 154, which is sleeved on the main body 111 and positioned between the main body 111 and the end cover 121 to ensure rotational engagement between the first end cover 120 and the damping inner ring 110. Specifically, the second sleeve 154 is sleeved around the outer circumference of the shaft mounting portion. Optionally, the second sleeve 154 is a copper sleeve.

[0057] Furthermore, the axial ends of the second sleeve 154 respectively abut against the damping inner ring 110 and the first end cap 120, thereby limiting the axial position of the damping inner ring 110 and the first end cap 120. Specifically, one axial end of the second sleeve 154 abuts against one end of the innermost first damping ring 114. Furthermore, a second limiting step 124 is provided at the radially inner end of the first end cap 120. The other axial end of the second sleeve 154 abuts against the second limiting step 124 to limit the axial position of the damping inner ring 110 and the first end cap 120. Furthermore, a third sealing ring 157 is provided between the second limiting step 124 and the main body 111. This third sealing ring 157 forms a seal to prevent the damping fluid from escaping from between the first end cap 120 and the damping inner ring 110. Specifically, a sealing groove is provided on the second limiting step 124 to accommodate the third sealing ring 157.

[0058] Continuing with reference to Figures 1 to 6, in this embodiment, the damped bearing structure 100 further includes a bearing seat 130. The first end cap 120 is disposed between the bearing seat 130 and the damping inner ring 110, and the first end cap 120 is fixedly connected to the bearing seat 130. Specifically, the bearing seat 130 has an annular structure, with the first end cap 120 and the damping inner ring 110 both disposed inside the annular structure. The bearing seat 130 covers the radially outer sides of the first damping ring 114 and the second damping ring 122, thereby sealing the damping gap.

[0059] Furthermore, a second damping gap 152 is formed between the first damping ring 114 and the bearing seat 130. The second damping gap 152 is connected to the first damping gap 151 and is also used to accommodate damping fluid. Specifically, in this embodiment, in the damping structure formed by the first damping ring 114 and the second damping ring 122, one of the first damping rings 114 is located at the outermost side of the damping structure. Thus, when the bearing seat 130 covers the radial outer side of the damping structure, a second damping gap 152 connected to the first damping gap 151 can be formed between the first damping ring 114 and the bearing seat 130. In this way, when the radial dimension of the damping structure is fixed, more damping gaps can be generated. Accordingly, the contact area between the damping inner ring 110 and the damping fluid is larger, which helps to generate a greater damping force.

[0060] In this embodiment, the bearing seat 130 is further provided with a pressure valve hole 131 that communicates with the first damping gap 151. During installation, excess damping fluid and air within the damping gap can be discharged from the pressure valve hole 131. Furthermore, if the damping fluid is insufficient during use, the damping fluid can be refilled through the pressure valve hole 131, thereby avoiding the large amount of work required to disassemble the damped bearing structure 100. Specifically, since a second damping gap 152 is formed between the bearing seat 130 and the first damping ring 114, the pressure valve hole 131 provided on the bearing seat 130 communicates with the first damping gap 151 through the second damping gap 152. To ensure that the damping fluid refilled from the pressure valve hole 131 into the second damping gap 152 can smoothly enter the first damping gap 151, the width of the second damping gap 152 is set to be greater than the width of the first damping gap 151. Specifically, the second damping gap 152 is the gap formed between the boss provided on the bearing seat 130 and the first damping ring 114 located at the radially outermost side. The gap width of the second damping gap 152 is controlled to be greater than the gap width of the first damping gap 151 by setting the height of the boss.

[0061] As shown in Figures 3 and 6, the end cover 121 has a first limiting step 123 that protrudes radially outward. The first limiting step 123 abuts against one axial end of the bearing seat 130, thereby limiting the axial position of the bearing seat 130. Specifically, the first limiting step 123 is located at the radially outer end of the end cover 121. The damping bearing structure also includes a connecting bolt that passes through the first limiting step 123 and connects to the bearing seat 130, thereby locking and fixing the first end cover 120 to the bearing seat 130. Furthermore, a fourth sealing ring 158 is provided between the end cover 121 and the bearing seat 130. The fourth sealing ring 158 forms a seal to prevent the damping fluid from overflowing from the gap between the end cover 121 and the bearing seat 130. Specifically, the fourth sealing ring 158 is located between the inner circumference of the bearing seat 130 and the outer circumference of the end cover 121. It is understood that in other embodiments, the fourth sealing ring can also be located at other positions where the bearing seat 130 and the end cover 121 cooperate. Optionally, a sealing groove for accommodating the fourth sealing ring 158 is provided on the end cover 121.

[0062] Referring again to Figures 1-6 , in this embodiment, the damped bearing structure 100 further includes a first sleeve 153. The first sleeve 153 is disposed radially outward of the raised portion 113 and located between the raised portion 113 and the bearing seat 130, thereby enabling rotational engagement between the bearing seat 130 and the damping inner ring 110. Specifically, in this embodiment, the radial dimension of the first sleeve 153 is greater than that of the second sleeve 154. Optionally, the first sleeve 153 may include, but is not limited to, a copper sleeve.

[0063] In this embodiment, the damped bearing structure 100 further includes a second end cover 140, which is fixedly connected to the bearing seat 130. The second end cover 140 and the first end cover 120 are respectively located on opposite axial sides of the raised portion 113. Specifically, the second end cover 140 is a circular plate-shaped member, which is fixedly connected to the bearing seat 130 via connecting bolts. At the same time, the first end cover 120 and the second end cover 140 work together to maintain a fixed axial position of the damping inner ring 110.

[0064] Furthermore, the end face of the second end cover 140 abuts against one axial end of the bearing seat 130, thereby limiting the axial position of the bearing seat 130 through the second end cover 140 and the first limiting step 123. At the same time, one axial end of the first sleeve 153 abuts against the second end cover 140. A first sealing ring 155 is provided between the second end cover 140 and the bearing seat 130. In this embodiment, the first sealing ring 155 is located between the end face of one axial end of the second end cover 140 and the bearing seat 130. A seal is formed by the first sealing ring 155 to prevent the damping fluid from overflowing from between the second end cover 140 and the bearing seat 130. Specifically, a sealing groove for accommodating the first sealing ring 155 is provided on one axial end face of the second end cover 140.

[0065] Furthermore, a second sealing ring 156 is disposed between the second end cap 140 and the damping inner ring 110. This seal prevents the damping fluid from escaping from the gap between the second end cap 140 and the damping inner ring 110. In this embodiment, the inner circumference of the second end cap 140 is rotatably engaged with the outer circumference of the drive shaft mounting portion 112, and the second sealing ring 156 is disposed therebetween. Specifically, a sealing groove is provided on the second end cap 140 to accommodate the second sealing ring 156.

[0066] The damped bearing structure 100 provided by an embodiment of the present invention first assembles the damping inner ring 110, the second end cover 140, the bearing seat 130, the first sealing ring 155 and the second sealing ring 156 together, and then flips the assembled structure to a state where the axis extends in the up and down directions. At this time, the second end cover 140 is set downward, and correspondingly, the first damping ring 114 is set upward. Subsequently, the damping liquid is filled in the annular space between adjacent first damping rings 114, and the first end cover 120 is installed from top to bottom. During the installation process, the second damping ring 122 is inserted between adjacent first damping rings 114, and the air and damping liquid between the adjacent first damping rings 114 are squeezed into the second damping gap 152 and discharged from the pressure valve hole 131. Finally, the first end cover 120 is fixedly connected to the bearing seat 130, and the assembly is completed.

[0067] The damped bearing structure 100 and photovoltaic tracking bracket provided by the embodiments of the present invention form an annular damping gap (including a first damping gap 151 and a second damping gap 152) distributed around the rotation axis (i.e., axis L) of the damping inner ring 110 by arranging a first damping ring 114 and a second damping ring 122. This effectively generates sufficient damping force in real time through a simple structure to counteract wind resistance, thereby ensuring the economy of the photovoltaic tracking bracket while improving the operational stability of the photovoltaic tracking bracket and reducing the impact of wind-induced disasters. Moreover, since the relative axial and radial positions of the first damping ring 114 and the second damping ring 122 are fixed, the stability of the damping gap is guaranteed. The inventors have found that the damping force generated by the damped bearing structure 100 is related to the contact area between the first damping ring 114 and the damping fluid, the damping gap size and the rotation speed. By ensuring that the contact area and the damping gap size remain unchanged during operation, it is ensured that the damping force generated by the damped bearing structure 100 is constant under a certain wind force, thereby effectively ensuring that the damped bearing structure 100 can generate sufficient damping force to counteract wind resistance, thereby ensuring the operational stability of the photovoltaic tracking bracket.

[0068] Although the present invention is disclosed above with reference to preferred embodiments, this is not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications without departing from the spirit and scope of the present invention. Therefore, any modifications, equivalent variations, and modifications made to the above embodiments in accordance with the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the scope of protection defined by the claims of the present invention.

Claims

1. A bearing structure with damping, the bearing structure with damping having an axial direction, characterized in that: The bearing structure with damping comprises: A damping inner ring, the damping inner ring comprising a main body and a first damping ring fixedly connected to the main body, the first damping ring extending along the axial direction; the main body is used for mounting a moving shaft; and A first end cover, wherein the first end cover comprises an end cover portion and a second damping ring fixedly connected to the end cover portion; the second damping ring extends along the axial direction; Wherein, the first end cover is rotatably matched with the damping inner ring; the first damping ring is plugged into the second damping ring, and the first damping ring and the second damping ring form a first damping gap; the first damping gap is used to accommodate damping fluid.

2. The bearing structure with damping according to claim 1, characterized in that: The number of the first damping ring and the number of the second damping ring are both plural, and the plurality of the first damping rings and the plurality of the second damping rings are sequentially distributed along the radial direction of the bearing structure with damping, and the plurality of the first damping rings and the plurality of the second damping rings are staggeredly distributed.

3. The bearing structure with damping according to claim 1, characterized in that: The first damping ring and the main body are an integral structure; and / or, The second damping ring and the end cover portion are an integral structure.

4. The bearing structure with damping according to claim 1, characterized in that: The damped bearing structure also includes a bearing seat, the first end cover is arranged between the bearing seat and the damping inner ring, and the first end cover is fixedly connected to the bearing seat.

5. The bearing structure with damping according to claim 4, characterized in that: The bearing seat is provided with a pressure valve hole connected with the first damping gap.

6. The bearing structure with damping according to claim 4, characterized in that: A second damping gap is formed between the first damping ring and the bearing seat, the second damping gap is communicated with the first damping gap, and the second damping gap is used to accommodate the damping fluid.

7. The bearing structure with damping according to claim 4, characterized in that: The end cover portion has a first limiting step protruding radially outward, and the first limiting step is abutted and matched with one axial end of the bearing seat.

8. The bearing structure with damping according to claim 4, characterized in that: The main body includes a moving shaft mounting portion and a raised portion arranged on the outer peripheral surface protruding from the moving shaft mounting portion, and the first damping ring is arranged on one axial side of the raised portion; the bearing structure with damping also includes a second end cover, the second end cover is fixedly connected to the bearing seat, and the second end cover and the first end cover are respectively located on both axial sides of the raised portion.

9. The bearing structure with damping according to claim 8, characterized in that: A first sealing ring is provided between the second end cover and the bearing seat; an end surface of the second end cover abuts against one axial end of the bearing seat, and the first sealing ring is located between the end surface of the second end cover and the bearing seat; A second sealing ring is arranged between the second end cover and the moving shaft mounting portion; the inner circumference of the second end cover is rotatably matched with the outer circumference of the moving shaft mounting portion, and the second sealing ring is located between the inner circumference of the second end cover and the outer circumference of the moving shaft mounting portion.

10. The bearing structure with damping according to claim 8, characterized in that: The damped bearing structure further comprises a first sleeve, which is arranged radially outside the protrusion and between the bearing seat and the protrusion, so that the bearing seat and the damping inner ring can be rotationally matched.

11. The bearing structure with damping according to claim 4, characterized in that: The bearing structure with damping also includes a fourth sealing ring; the fourth sealing ring is located between the inner circumference of the bearing seat and the outer circumference of the first end cover.

12. The bearing structure with damping according to claim 1, characterized in that: The bearing structure with damping further includes a second sleeve, which is sleeved on the main body and located between the main body and the end cover, so that the first end cover and the damping inner ring are rotatably matched; The axial ends of the second sleeve are respectively abutted against the damping inner ring and the first end cover to limit the axial positions of the damping inner ring and the first end cover.

13. The bearing structure with damping according to claim 12, characterized in that: A second limiting step is arranged at the radial inner end of the first end cover, and one axial end of the second sleeve abuts against the second limiting step for limiting position; a third sealing ring is arranged between the second limiting step and the main body.

14. A photovoltaic tracking bracket, characterized in that: The photovoltaic tracking bracket includes a column, a moving shaft and a damped bearing structure as described in any one of claims 1 to 13, wherein the moving shaft is used to install a photovoltaic component, and the moving shaft is rotatably mounted on the column through the damped bearing structure.

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