Combined bearing and bearing assembly

Abstract

The utility model provides a combined bearing and a bearing assembly, the combined bearing comprises a bearing main body and a bearing accessory, the bearing main body is a polymer plastic part and is used for being arranged between a main shaft of a photovoltaic tracking support and the radial direction of a bearing seat; the bearing accessory comprises two baffles which are both metal pieces, are coaxially arranged with the bearing main body and are respectively positioned at two axial ends of the bearing main body; through holes allowing the main shaft to penetrate through are formed in the bearing main body and the two baffles respectively; the connecting piece is used for detachably connecting the bearing main body with the baffle plate. The plastic bearing main body made of a high polymer material and the bearing accessory made of a metal material are combined to form the combined bearing, the material and the structure of the bearing are optimized, the structural strength of the corresponding combined bearing is improved, the use performance is more stable and reliable, and meanwhile, the combined bearing is simple in overall structure, more convenient to install and operate and lower in cost.

Description

Technical Field

[0001] The present application relates to the technical field of photovoltaic brackets, and further to a combined bearing and a bearing assembly. Background Art

[0002] In recent years, with the rapid development of the photovoltaic industry, photovoltaic tracking brackets have been widely used because they automatically track the sun to increase the overall power generation of photovoltaic modules. Bearings, as an important component of photovoltaic tracking brackets, play a vital role in the stable operation of photovoltaic tracking brackets.

[0003] In the related technology, since photovoltaic tracking brackets are used in the wild environment, the bearings on them are prone to aging and damage, the structural stability is poor, and they need to be replaced frequently; and most of the bearings on the market are complex in structure, inconvenient to install, and the production and application costs are relatively high. Therefore, designing a bearing for photovoltaic tracking brackets that is high in strength, stable and reliable, easy to install, and low in cost will have an important impact on the development of photovoltaic tracking systems. Utility Model Content

[0004] The purpose of this application is to provide a combined bearing and a bearing assembly, which optimizes the material and structure of the combined bearing, improves the structural strength of the corresponding bearing, ensures the performance, and improves the convenience of its production and installation, thereby promoting energy conservation and cost reduction for enterprises.

[0005] The technical solutions provided by this application are as follows:

[0006] In one aspect, the present application provides a combined bearing, comprising:

[0007] The bearing body is a polymer plastic part and is arranged between the main shaft of the photovoltaic tracking bracket and the radial direction of the bearing seat;

[0008] A bearing accessory, wherein the bearing accessory comprises two baffles, both of which are metal parts; the two baffles are coaxially arranged with the bearing body and are respectively located at two ends of the axial direction of the bearing body, and the bearing body and the two baffles are respectively provided with through holes allowing the main shaft to pass through;

[0009] A connecting piece is used to detachably connect the bearing body and the baffle.

[0010] A combined bearing provided by the present application adopts polymer materials and metal materials to form a bearing main body and bearing accessories respectively. In actual application, after the bearing main body is installed in the radial position between the main shaft of the photovoltaic tracking bracket and the bearing seat, the bearing accessories, namely two baffles, are coaxially arranged at the two ends of the axial direction of the bearing main body, and then the two baffles are fixedly connected to the bearing main body by connecting parts, thereby completing the installation of the combined bearing between the main shaft and the bearing seat. The combined bearing has a simple structure and is easy to use.

[0011] At the same time, since the bearing body made of polymer materials has the characteristic of self-lubrication during use, after the combined bearing is installed between the main shaft and the bearing seat, it can be adaptively adjusted according to the forces in various directions, thereby improving the firmness and stability of its installation on the main shaft; and the bearing body is injection molded with polymer materials, the production process of the bearing body is simple, the yield rate is high, it is suitable for mass production, and the cost is low. The bearing accessories made of metal materials can be used to reinforce the bearing body, assist the bearing body to resist the axial force it bears, and reduce the probability of damage due to the axial force; at the same time, it has a limiting effect, preventing the bearing body from escaping from the bearing seat along the axial direction, thereby improving the structural strength and stability of the combined bearing and ensuring its performance.

[0012] In this way, a combined bearing is formed by combining a plastic bearing body made of polymer material and a bearing accessory made of metal material, thereby optimizing the material and structure of the bearing and effectively improving the structural strength of the corresponding bearing. The combined bearing has stable and reliable performance, simple structure, convenient installation, and low cost.

[0013] In some embodiments, the bearing body is a cylindrical structure, and a plurality of through grooves are formed on the peripheral wall thereof.

[0014] A combined bearing provided in the present application has a through groove arranged on the peripheral wall of the bearing body. On the one hand, it helps to reduce the material usage in producing the bearing body and reduce the production cost of the combined bearing; on the other hand, it helps to reduce the weight of the corresponding combined bearing, thereby improving its installation convenience and improving its performance.

[0015] In some embodiments, the two baffles are perpendicular to the axial direction of the bearing body, and the sides of the two baffles close to each other are respectively pressed against the corresponding end faces of the bearing body;

[0016] The connecting piece passes through the bearing body and the baffle, and the baffle is detachably connected to the bearing body through the connecting piece.

[0017] A combined bearing provided in the present application has a connecting piece that passes through the bearing body and two baffles to realize the assembly of the bearing accessory and the bearing body. The assembly operation is simple and easy to implement, which helps to further improve the installation convenience of the combined bearing.

[0018] In some embodiments, the through hole is a rectangular hole, a pentagonal hole, a hexagonal hole, a heptagonal hole, a circular hole, a D-shaped hole, or a six-dimensional square and circular hole.

[0019] Through the combined bearing provided by the present application, in actual applications, according to engineering design requirements, the through hole is set to a corresponding shape to meet the assembly requirements of spindles with different cross-sectional shapes, thereby expanding the application scope of the combined bearing.

[0020] In some embodiments, the bearing body includes a first body and a second body, the first body and the second body are separately provided, and the first body and the second body are respectively covered on the outer wall surface of the circumference of the main shaft.

[0021] A combined bearing provided by the present application is provided with a split first body and a split second body forming a bearing body. When the combined bearing is actually installed on the main shaft, the first body and the second body can be directly snapped into corresponding positions on the outer cylindrical wall of the main shaft without sliding one end of the main shaft from the back of the head sleeve to the preset installation position, thereby facilitating the operation of installing the combined bearing on the main shaft.

[0022] On the other hand, the present application also provides a bearing assembly, including a bearing seat and any of the above-mentioned combined bearings, wherein the combined bearing is used to be located between the main axis of the photovoltaic tracking bracket and the radial direction of the bearing seat.

[0023] In some embodiments, a rib is provided at one axial end of the bearing body, and the rib is integrally formed at the outer edge of the one axial end of the bearing body; the rib can abut against the end wall of the bearing seat to limit the position.

[0024] In some embodiments, a shoulder is provided at the other end of the bearing body axially away from the retaining edge, and the shoulder is a polymer plastic part. The shoulder and the bearing body are separately provided, and are detachably connected to the bearing body and the baffle plate through the connecting piece; the retaining edge and the shoulder are located between the two baffle plates, and the retaining edge and the shoulder are used to axially limit the bearing seat after the bearing seat is sleeved on the bearing body.

[0025] Through the bearing assembly provided by the present application, in actual application, the bearing seat is inserted into the outer wall surface of the bearing body from the end of the bearing body axially away from the retaining edge, and then the retaining shoulder is removably installed on the end of the bearing body away from the retaining edge through a connecting piece, thereby realizing stable installation of the combined bearing between the bearing seat and the main shaft.

[0026] The ribs and shoulders are injection molded with polymer materials to form an axial limit for the bearing seat. The production process and structure of the limit structure are simple, and the production is convenient. At the same time, the assembly operation of the bearing seat and the combined bearing is convenient and easy to implement, which helps to further improve the convenience of using the combined bearing and reduce its use and installation costs.

[0027] In some embodiments, a gap is provided between the bearing seat and the rib and / or between the bearing seat and the shoulder.

[0028] A bearing assembly provided by the present application maintains a gap between the bearing seat and the rib and / or shoulder. On the one hand, this helps to meet the assembly tolerance requirements between the combined bearing and the bearing seat, reduces the manufacturing difficulty of the combined bearing, and makes the assembly operation of the bearing seat and the combined bearing more convenient and smooth; on the other hand, it effectively reduces the probability of the combined bearing rubbing against the bearing seat and causing damage during use, thereby ensuring the smoothness of the rotation of the combined bearing and helping to extend the service life of the combined bearing; at the same time, setting a gap between the bearing seat and the limiting structure also helps to reserve a certain amount of activity space for the combined bearing when the combined bearing is subjected to a certain axial force, thereby further reducing the probability of the combined bearing escaping from the bearing seat and improving its stability in use.

[0029] In a bearing assembly provided by the present application, the rib is axially located between the bearing seat and one baffle plate, and the shoulder is axially located between the bearing seat and another baffle plate to separate the bearing seat and the baffle plate.

[0030] A bearing assembly provided by the present application is provided with a baffle and a shoulder to separate the bearing seat and the baffle, so as to avoid direct friction between the baffle made of metal and the bearing seat as much as possible, thereby extending the service life of the combined bearing.

[0031] Compared with the prior art, the combined bearing and bearing assembly provided by the present application has at least one of the following features:

[0032] Beneficial effects:

[0033] 1. In the present application, a bearing body is injection molded by a polymer material, a bearing accessory is molded by a metal material, and the bearing accessory is reinforced at both ends of the bearing body in the axial direction by bolts and other connecting parts to form a combined bearing; since the bearing body made of the polymer material has the characteristic of self-lubrication during use, in actual applications, the bearing body can be adaptively adjusted according to the forces in various directions, which helps to ensure its firm and stable installation on the main shaft of the photovoltaic tracking bracket; and, the bearing body is injection molded by a polymer material, and the production process of the bearing body is simple, the yield is high, it is suitable for mass production, and the cost is low; and a baffle made of a metal material is used to reinforce the bearing body, which assists the bearing body to jointly bear the axial force and reduces the probability of the bearing body being damaged due to the axial force; at the same time, it also helps to prevent the bearing body from escaping from the bearing seat along the axial direction, thereby improving the structural strength of the combined bearing and ensuring its stable and reliable performance; in addition, the overall structure of the combined bearing is simple, and it is easy to install and use, which helps to ensure the construction efficiency of the main shaft of the photovoltaic tracking bracket.

[0034] 2. The combined bearing of the present application has a through hole on which the main shaft of the photovoltaic tracking bracket is allowed to pass through, and its contour shape is not limited, and it can be opened into a pentagonal hole, a rectangular hole, a hexagonal hole, a heptagonal hole, a circular hole, a D-shaped hole, a six-dimensional square and round hole, etc., so that the combined bearing can be suitable for a main shaft of any cross-sectional shape; in actual production, the shape of the through hole can be designed according to engineering needs.

[0035] 3. In this application, the baffle can be made of steel or aluminum alloy. Since the baffle produced by aluminum alloy usually needs to be thickened and has a high production cost, it is preferred to use steel to produce the baffle. In this application, a steel plate is used as a baffle and is arranged on the outside of the polymer plastic bearing body to effectively enhance the strength of the combined bearing; at the same time, with the help of the steel baffle to withstand the axial force, when the main shaft is axially displaced due to thermal expansion and contraction, or the bolts connecting the two shafts are loosened, the combined bearing can be effectively prevented from being damaged and falling out of the bearing seat.

[0036] 4. In this application, a separately arranged shoulder and a flange formed integrally at one end of the bearing body are combined to form a limiting structure, which is used to provide a limit for the bearing seat; at the same time, since both the shoulder and the flange are made of polymer plastic, the limiting structure is used to block the bearing seat and the baffle, avoiding direct friction between the metal baffle and the bearing seat, effectively extending the service life of the combined bearing. In addition, the limiting structure has a simple production process and is easy to manufacture, which helps promote energy conservation and cost reduction for enterprises.

[0037] 5. In the present application, a gap is set between the bearing seat and the shoulder and / or the rib. On the one hand, it helps to meet the assembly tolerance requirements between the combined bearing and the bearing seat, reduce the manufacturing difficulty of the combined bearing, and make the assembly operation of the bearing seat and the combined bearing more convenient and smooth; on the other hand, it effectively reduces the probability of the combined bearing rubbing against the bearing seat and causing damage during use, thereby ensuring the smoothness of the rotation of the combined bearing and helping to extend the service life of the combined bearing; at the same time, setting a gap between the bearing seat and the limiting structure also helps to reserve a certain amount of activity space for the combined bearing when the combined bearing is subjected to a certain axial force, thereby further reducing the probability of the combined bearing escaping from the bearing seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The preferred implementation scheme will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present solution.

[0039] Figure 1 This is an axonometric diagram of the overall structure of the combined bearing, which is mainly shown in the embodiment of the present application;

[0040] Figure 2 This is an exploded view of the overall structure of the combined bearing, which is mainly reflected in the embodiment of the present application;

[0041] Figure 3 This is an axonometric schematic diagram of the overall structure of a combined bearing adapted to a main shaft with a square tube cross section, which is mainly reflected in the embodiment of the present application;

[0042] Figure 4 This is a state diagram of the embodiment of the present application, which mainly embodies the split-type bearing body being arranged on the main shaft;

[0043] Figure 5 It is an axonometric schematic diagram of the overall structure of the combined bearing when the bearing body is configured in a split form in the embodiment of the present application;

[0044] Figure 6 This is a side view of the overall structure of the bearing assembly mainly embodied in the embodiment of the present application;

[0045] Figure 7 yes Figure 6 The cross-sectional view along the AA direction is mainly used to reflect the arrangement of the first body and the second body in the bearing seat.

[0046] Description of reference numerals:

[0047] 1. Bearing body; 11. First body; 12. Second body; 13. Through groove; 2. Bearing accessories; 21. Baffle; 3. Connector; 4. Limiting structure; 41. Side guard; 42. Shoulder guard; 5. Mounting position; 100. Bearing seat; 200. Spindle. DETAILED DESCRIPTION

[0048] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the specific implementation methods of the present application will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0049] In order to simplify the drawings, only the parts related to the present application are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked. In this article, "one" not only means "only one", but also means "more than one".

[0050] In the related technology, bearings are an important component of photovoltaic tracking brackets, and they play a vital role in the stable operation of photovoltaic tracking brackets. At present, most of the bearings used for photovoltaic tracking brackets on the market have complex structures, high production costs, and inconvenient installation; photovoltaic tracking brackets are used in the field environment, and the bearings on them are easily aged and damaged by wind and sun, and their structural stability is poor, the performance cannot be guaranteed, and they need to be replaced frequently, which needs to be improved.

[0051] In one embodiment, referring to the accompanying drawings of the specification Figures 1 to 7 , discloses a combined bearing, including a bearing body 1, a bearing attachment 2 and a connector 3 connecting the two. Specifically, the bearing body 1 is made of polymer material, that is, the bearing body 1 is a polymer plastic part; the bearing attachment 2 is made of metal material, that is, the bearing attachment 2 is a metal part; and the bearing attachment 2 is configured as two baffles 21, and the two baffles 21 are coaxially arranged at the two ends of the axial direction of the bearing body 1; the bearing body 1 and the two baffles 21 are respectively provided with through holes allowing the main shaft 200 to pass through. In actual application, the bearing body 1 is sleeved on the preset position of the main shaft 200 of the photovoltaic tracking bracket through the through hole thereon, and the bearing attachment 2 is detachably installed on the bearing body 1 through the connector 3. In specific applications, since the bearing body 1 made of polymer material has the characteristic of self-lubrication during use, after the combined bearing is installed on the main shaft 200, the bearing body 1 makes adaptive adjustments according to the forces in different directions, so as to achieve the stable installation of the combined bearing on the main shaft 200; at the same time, the bearing body 1 is formed by the polymer material through the injection molding process, and the production process of the bearing body 1 is simple, the yield rate is high, and it is suitable for mass production and low cost. The baffle 21 formed by processing metal material is fixedly installed on the bearing body 1, and the two axial ends of the bearing body 1 are reinforced respectively, so as to assist the bearing body 1 to resist the axial force it bears, and effectively reduce the probability that the bearing body 1 is damaged and disengaged from the bearing seat 100 when the main shaft 200 is axially displaced due to thermal expansion and contraction or loose bolts, etc., thereby improving the structural strength of the combined bearing, ensuring its performance, and significantly extending its service life. Further explanation is given below.

[0052] In one embodiment, based on the above embodiment, specifically, referring to Figure 1 and Figure 2 In this embodiment of the present application, the bearing body 1 is a cylindrical structure, and the through hole for accommodating the main shaft 200 is a pentagonal hole. Figures 3 to 5According to actual assembly needs, the through holes can also be set as rectangular holes, circular holes, D-shaped holes, six-dimensional square and circle holes, etc., to adapt to the corresponding cross-sectional shape of the main shaft 200; it should be noted that in the embodiment of the present application, the six-dimensional square and circle is defined as the cross-sectional shape of the main shaft as published in Chinese Patent 202221342724.0, and the cross-section includes three straight sides and three arc sides. Each arc side is connected to a straight side at both ends, and the length of the arc side opposite to one of the straight sides is greater than the length of the other two arc sides. In this embodiment of the present application, a plurality of through grooves 13 are provided on the peripheral wall of the bearing body 1. The through grooves 13 are used to reduce the material consumption of the bearing body 1, thereby reducing the weight of the bearing body 1 while reducing the production cost of the bearing body 1, so as to facilitate the installation of the combined bearing by the staff. Refer to Figure 1 and Figure 2 In this embodiment of the present application, a plurality of through grooves 13 are arranged in a circumferential array around the axis of the bearing body 1 and penetrate the radial direction of the corresponding position of the bearing body 1. In the embodiment of the present application, there is no restriction on the setting position and shape of the through grooves 13. For example, the through grooves 13 can also be provided on the outer wall surface or the inner wall surface of the bearing body 1, and of course, can also be provided inside the bearing body 1. Similarly, the through grooves 13 can be provided in a rectangular, circular, oblong, or other shapes.

[0053] In the implementation manner of the present application, the bearing body 1 may also be provided in other forms. For example, the bearing body 1 is provided in a split structure. Figures 3 to 5 The bearing body 1 includes a first body 11 and a second body 12 which are separately arranged. The first body 11 and the second body 12 are respectively covered on the outer wall surface of the peripheral side of the main shaft 200. Figures 3 to 5 The structure diagram of the bearing body 1 adapted to the square tubular main shaft 200 is shown when it is set up separately. The cross-sections of the first body 11 and the second body 12 along the axial direction of the bearing body 1 are generally C-shaped. When in use, the first body 11 and the second body 12 are respectively buckled to the radial sides of the preset position of the main shaft 200, and the inner walls of the concave sides of the two are pressed against the wall surface of the corresponding position of the main shaft 200. At this time, the outer wall surface of the bearing body 1 surrounded by the first body 11 and the second body 12 is surrounded to form a circular ring for the bearing seat 100 to be mounted.

[0054] By adopting this method, when actually installing the combined bearing, it is only necessary to buckle the first body 11 and the second body 12 directly onto the outer wall surface of the axial preset position of the main shaft 200, and then fix the bearing seat 100 onto the outer wall surface of the bearing body 1 formed by the first body 11 and the second body 12, so as to achieve stable installation of the bearing body 1 on the main shaft 200; in this way, it can replace the operation of putting the bearing body 1 from one end of the main shaft 200 onto the main shaft 200 and then sliding it along the axial direction of the main shaft 200 to the preset position, which can significantly improve the assembly convenience and efficiency of the combined bearing.

[0055] And, refer to Figures 4 to 7 When the bearing body 1 is configured as a split structure, the first body 11 and the second body 12 do not need to form a complete tubular structure when they are directly buckled, that is, when the first body 11 and the second body 12 are installed on the main shaft 200, the corresponding ends of the two do not need to be abutted. In this way, while improving the convenience of installation, it can also reduce the material usage of the bearing body 1, further promoting energy conservation and cost reduction for enterprises. In addition, in other embodiments, the bearing body 1 can also be configured as a left and right split form, and the two splits are sequentially sleeved on the outer wall surface of the peripheral side of the main shaft along the axial direction and then fixedly connected by fasteners or other forms of connecting structures. There are many ways to implement the connection structure of the left and right split bearing body 1, which will not be listed here one by one.

[0056] Figures 4 to 7 The bearing body shown in the figure has a through groove 13 formed on the concave side of the first body 11 and the second body 12, that is, the through groove 13 is formed on the inner wall surface of the corresponding bearing body 1; in actual application, since the opening of the through groove 13 is sealed between the outer wall of the bearing and the main shaft 200, dust and other impurities in the environment are not easy to enter the through groove 13, which can effectively reduce the probability of affecting the smooth movement of the corresponding bearing seat 100 component due to the presence of impurities between the bearing body 1 and the bearing seat 100, which is conducive to extending the service life of the combined bearing.

[0057] Of course, in the implementation manner of the present application, the bearing body 1 can also be directly set as a solid structure, that is, the setting of the through groove 13 can also be cancelled, which can increase the strength of the bearing body 1 and reduce the cost of injection molding of the bearing body 1.

[0058] Reference Figure 2 and Figure 4 The bearing attachment 2 includes two baffles 21, which are arranged in parallel and spaced apart, and are perpendicular to the axial direction of the bearing body 1. The two baffles 21 are arranged at both ends of the axial direction of the bearing body 1. In this embodiment of the present application, the baffle 21 is usually made of steel or aluminum alloy; the use of aluminum alloy to produce the baffle 21 requires thickening treatment, and the production cost is relatively high, so in this embodiment of the present application, steel is preferably used to produce the baffle 21. The steel baffle 21 is arranged on the outer side of the polymer plastic shoulder 42 and the bearing body 1, which can effectively enhance the strength of the combined bearing; at the same time, with the help of the steel baffle 21 to withstand the axial force, when the main shaft 200 produces axial displacement due to thermal expansion and contraction or the loosening of the bolts connecting the two shafts, it can effectively prevent the combined bearing from being damaged and detaching from the bearing seat 100, and effectively ensure the structural strength and service life of the combined bearing.

[0059] In this embodiment of the present application, the connecting member 3 includes a bolt; specifically, two bolts are provided, and the two bolts are arranged in parallel and spaced apart, and are respectively provided at both ends of any radial direction of the bearing body 1. When in use, the threaded ends of the two bolts are sequentially passed through a baffle 21, the bearing body 1 and another baffle 21 along the axial direction of the bearing body 1, and the three are locked by nuts, thereby realizing the assembly of the combined bearing and realizing the detachable connection between the bearing body 1 and the baffle 21. The combined bearing has a simple structure, is easy to produce, has low cost, and is easy to install and operate, which is beneficial to energy saving and cost reduction for enterprises. In other embodiments, the detachable connection between the bearing body 1 and the baffle 21 can also be achieved by other existing connection structures such as snap connection, mortise and tenon connection, etc.

[0060] Next, the technical solution is further described in combination with the bearing seat 100 and the main shaft 200: In one embodiment, referring to the accompanying drawings of the specification Figures 1 to 7 , discloses a bearing assembly, including a bearing seat 100 and the combined bearing described in the above embodiment, the combined bearing is located between the main shaft of the photovoltaic tracking bracket and the radial direction of the bearing seat 100, the bearing seat 100 includes an integrally formed ring and a base, wherein the ring is coaxially sleeved on the outer wall surface of the bearing body 1, and the bearing body 1 can rotate relative to the bearing seat 100; the base is installed on the top of the column of the photovoltaic tracking bracket through a mounting structure to support the combined bearing and its upper main shaft 200.

[0061] In a specific embodiment, the outer wall surface of the bearing body 1 is a spherical surface, and the inner wall surface of the bearing seat 100 is a spherical surface. The bearing body 1 and the bearing seat 100 are spherically matched, which can achieve a large deflection angle adjustment of the main shaft, thereby adapting to the slope of the slope and having a wide range of applications. In this structure, the spherical structures of the bearing body 1 and the bearing seat 100 are in a shrinking state along the axial direction of the main shaft 200, and the bearing body 1 is tightly wrapped and limited in the spherical structure of the bearing seat 100, thereby preventing the bearing body 1 from falling off from the bearing seat 100 during rotation, and there is no need to set an additional limiting structure for the bearing body 1.

[0062] In another specific embodiment, the bearing assembly further includes a limiting structure 4, which is used to limit the position of the bearing seat 100 sleeved on the bearing body 1, thereby reducing the probability of the bearing body 1 being damaged by the axial force and coming out of the bearing seat 100; on the other hand, the limiting structure 4 is used to block the bearing seat 100 and the corresponding baffle 21, thereby effectively reducing the friction damage between the end wall of the bearing seat 100 and the corresponding baffle 21, thereby further extending the service life of the combined bearing. The limiting structure 4 is disposed at both ends of the bearing body 1 in the axial direction and is located between the two baffles 21.

[0063] Specifically, the limiting structure 4 includes a rib 41, which is a polymer plastic part; wherein the rib 41 is integrally formed with the bearing body 1, and is formed at the outer edge of one axial end of the bearing body 1, and can abut against the end wall of the bearing seat 100 to limit the position and prevent the bearing body 1 from falling off from the bearing seat 100.

[0064] Please continue to refer to Figures 1 to 7 As shown, in this embodiment, the limiting structure 4 also includes a shoulder 42, which is arranged at the other end of the bearing body 1 axially away from the rib 41. The rib 41 and the shoulder 42 are used to axially limit the bearing seat 100 after the bearing body 1 is set on the bearing seat 100, and a mounting position 5 for the bearing seat 100 to be set is formed between the rib 41 and the shoulder 42. The rib 42 is a polymer material, and the shoulder 42 is set separately from the bearing body 1, and is injection molded from the same polymer material used to produce the bearing body 1; in this embodiment of the present application, the shoulder 42 is an annular plate structure; when in use, the shoulder 42 is also set on the main shaft 200, and is located on the side of the bearing body 1 axially away from the rib 41; the shoulder 42 is detachably connected to the bearing attachment 2 and the bearing body 1 through the connecting piece 3; and its side close to the rib 41 is pressed against the corresponding end face of the bearing body 1.

[0065] Furthermore, there is a gap between the axial end of the bearing seat 100 and the limiting structure 4, that is, a gap is provided between the bearing seat 100 and the retaining edge 41 and / or between the bearing seat 100 and the retaining shoulder 42; such a setting, on the one hand, helps to meet the assembly tolerance requirements between the combined bearing and the bearing seat 100, reduces the manufacturing difficulty of the combined bearing, and makes the assembly operation of the bearing seat 100 and the combined bearing more convenient and smooth; on the other hand, it effectively reduces the probability of the combined bearing rubbing against the bearing seat 100 and causing damage during use, thereby ensuring the smoothness of the rotation operation of the combined bearing and helping to extend the service life of the combined bearing; at the same time, setting a gap between the bearing seat 100 and the limiting structure 4 also helps to reserve a certain amount of activity space for the combined bearing when the combined bearing is subjected to a certain axial force, thereby further reducing the probability of the combined bearing escaping from the bearing seat 100.

[0066] In actual application, the bearing seat 100 is mounted on the bearing body 1 from the end of the bearing body 1 axially away from the rib 41. After the bearing body 1 is installed at the preset position of the main shaft 200, the shoulder 42 and the bearing attachment 2 are fixedly installed on the corresponding end of the bearing body 1 through the connecting piece 3, and the assembly of the corresponding bearing assembly can be completed. The rib 41 is axially located between the bearing seat 100 and one baffle 21, and the shoulder 42 is axially located between the bearing seat 100 and the other baffle 21 to separate the bearing seat 100 and the baffle 21, thereby avoiding wear caused by contact between the metal bearing seat 100 and the metal baffle 21, thereby extending the life of the bearing assembly.

[0067] The implementation principle of this embodiment of the present application is as follows: in actual application, firstly, the bearing seat 100 is mounted on the mounting position 5 of the bearing body 1 from the end of the bearing body 1 axially away from the retaining edge 41, the retaining shoulder 42 is coaxially arranged on the end of the bearing body 1 axially away from the retaining edge 41, and then the two retaining edges 41 are coaxially arranged on the sides of the bearing body 1 and the retaining shoulder 42 that are away from each other; then, the two baffles 21, the bearing body 1 and the retaining shoulder 42 are fixedly connected by bolts and nuts, so that the assembly of the bearing assembly can be realized. After that, after the combined bearing is installed at the preset position of the main shaft 200, the bearing seat 100 is fixed to the top of the column of the photovoltaic tracking bracket through the installation structure, so that the bearing seat 100 assembly can achieve stable support of the main shaft 200.

[0068] It should be noted that the above embodiments can be freely combined as needed. The above is only the preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present application, and these improvements and modifications should also be regarded as the protection scope of the present application.

Claims

1. A combined bearing, characterized in that: include: The bearing body is a polymer plastic part and is arranged between the main shaft of the photovoltaic tracking bracket and the radial direction of the bearing seat; A bearing accessory, the bearing accessory includes two baffles, both of which are metal parts; the two baffles are coaxially arranged with the bearing body and are respectively located at two ends of the axial direction of the bearing body, and the bearing body and the two baffles are respectively provided with through holes allowing the main shaft to pass through; A connecting piece is used to detachably connect the bearing body and the baffle.

2. A combined bearing according to claim 1, characterized in that: The bearing body is in a circular tubular structure, and a plurality of through grooves are provided on the peripheral wall thereof.

3. A combined bearing according to claim 1, characterized in that: The two baffles are perpendicular to the axial direction of the bearing body, and the side surfaces of the two baffles close to each other are respectively pressed against the corresponding end surfaces of the bearing body; The connecting piece passes through the bearing body and the baffle, and the baffle is detachably connected to the bearing body through the connecting piece.

4. The combined bearing according to any one of claims 1 to 3, characterized in that: The through hole is a rectangular hole, a pentagonal hole, a hexagonal hole, a heptagonal hole, a circular hole, a D-shaped hole or a six-dimensional square and round hole.

5. A combined bearing according to claim 1, characterized in that: The bearing body includes a first body and a second body. The first body and the second body are separately provided. The first body and the second body are respectively covered on the outer wall surface of the peripheral side of the main shaft.

6. A bearing assembly, characterized in that: It comprises a bearing seat and a combined bearing as claimed in any one of claims 1 to 5, wherein the combined bearing is used to be located between the main axis of the photovoltaic tracking bracket and the radial direction of the bearing seat.

7. A bearing assembly according to claim 6, characterized in that: A rib is provided at one axial end of the bearing body, and the rib is integrally formed at the outer edge of the one axial end of the bearing body; the rib can abut against the end wall of the bearing seat to limit the position.

8. A bearing assembly according to claim 7, characterized in that: A shoulder is provided at the other end of the bearing body axially away from the retaining edge. The shoulder is a polymer plastic part. The shoulder and the bearing body are separately provided and are detachably connected to the bearing body and the baffle through the connecting piece. The retaining edge and the shoulder are located between the two baffles, and the retaining edge and the shoulder are used to axially limit the bearing seat after the bearing seat is sleeved on the bearing body.

9. A bearing assembly according to claim 8, characterized in that: A gap is provided between the bearing seat and the rib and / or between the bearing seat and the shoulder.

10. A bearing assembly according to claim 9, characterized in that: The rib is axially located between the bearing seat and one baffle plate, and the shoulder is axially located between the bearing seat and another baffle plate to separate the bearing seat and the baffle plate.

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