CN216216671U

CN216216671U - Photovoltaic tracking support and photovoltaic power generation device

Info

Publication number: CN216216671U
Application number: CN202122305695.2U
Authority: CN
Inventors: 韦海峰
Original assignee: Sungrow Renewables Development Co Ltd
Current assignee: Sungrow Renewables Development Co Ltd
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2022-04-05
Anticipated expiration: 2031-09-23

Abstract

The utility model relates to the technical field of photovoltaic power generation, in particular to a photovoltaic tracking support and a photovoltaic power generation device. This photovoltaic tracking support includes installation component and lift stand subassembly, and the installation component is used for fixed photovoltaic module, and the lift stand subassembly includes the lift stand that the multiunit was arranged along first direction interval, and multiunit lift stand subassembly supports the installation component jointly, has improved the support stability of lift stand subassembly to the installation component, avoids the installation component to produce wind-induced vibration under the strong wind environment, has improved photovoltaic tracking support's structural strength and wind resistance ability. In addition, through adjusting the difference in height at multiunit lift stand lift installation component both ends to adjust installation component and photovoltaic module's inclination, make photovoltaic tracking support not only can realize the regulation to photovoltaic module inclination, can also realize the regulation to photovoltaic module lift height, increase photovoltaic tracking support's application scene, also improved photovoltaic tracking support to installation error's compatibility.

Description

Photovoltaic tracking support and photovoltaic power generation device

Technical Field

The utility model relates to the technical field of photovoltaic power generation, in particular to a photovoltaic tracking support and a photovoltaic power generation device.

Background

Solar photovoltaic power generation is one of the most leading solar energy utilization form at present, in order to improve photovoltaic power plant's generated energy and economic benefits, adopts the photovoltaic tracking support to support fixed photovoltaic module usually, and the angle that the photovoltaic tracking support supported photovoltaic module is adjusted according to the angle of sunlight for the sunlight can be on photovoltaic module all the time perpendicularly shines, guarantees that photovoltaic module can accept more illumination, thereby promotes photovoltaic power generation device's generating efficiency.

As shown in fig. 1, an existing photovoltaic tracking support generally includes a supporting upright 2 ', a rotating main shaft 1', and a rotary driving member, where the supporting upright 2 'supports the rotating main shaft 1', and the rotary driving member drives the rotating main shaft 1 'to rotate, so that the rotating main shaft 1' drives a photovoltaic module to rotate to adjust an inclination angle, thereby ensuring that the photovoltaic module can receive more light. Because the height of the supporting upright post 2 'is not adjustable, in order to ensure that the supporting upright post 2' is more stable to install on a fixed foundation, the photovoltaic tracking support can only be installed at a place with high construction precision of the fixed foundation, and the difficulty of the fixed foundation construction is increased. In addition, because the length (X direction in fig. 1) of the photovoltaic module is longer, the length of the rotating main shaft 1 'extending along the X direction is also longer, in the prior art, although a plurality of supporting upright columns 2' are arranged at intervals along the X direction to jointly support the rotating main shaft 1 ', the rotating main shaft 1' is supported by only one supporting upright column 2 'in the width direction (Y direction in fig. 1) of the photovoltaic module, so that the rotating main shaft 1' is easy to generate wind-induced vibration under the condition of strong wind, the stability of the photovoltaic tracking support on the support of the photovoltaic module is reduced, and even the photovoltaic tracking support is damaged.

Therefore, it is desirable to invent a photovoltaic tracking bracket and a photovoltaic power generation device to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a photovoltaic tracking support, which can adjust the height and the inclination angle of a photovoltaic assembly, increase the application range of the photovoltaic tracking support and improve the structural strength and the stability of the photovoltaic tracking support.

Another object of the present invention is to provide a photovoltaic power generation apparatus, which can adjust the height and the inclination angle of a photovoltaic module, increase the application range of a photovoltaic tracking support, and improve the structural strength and the stability of the photovoltaic tracking support.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a photovoltaic tracking rack, comprising:

the mounting assembly is used for fixing the photovoltaic assembly; and

the lifting stand column assembly comprises a plurality of groups of lifting stand columns arranged at intervals along a first direction, and the lifting stand column assembly supports the mounting assembly jointly, and the lifting stand columns lift up and down through adjusting the plurality of groups of height difference at two ends of the mounting assembly so as to adjust the mounting assembly and the inclination angle of the photovoltaic assembly.

Preferably, two groups of lifting upright post assemblies are arranged, wherein one group of lifting upright posts raises one end of the mounting assembly, and the other group of lifting upright posts lowers the other end of the mounting assembly or keeps the height of the other end of the mounting assembly unchanged; or

One group of the lifting columns lowers one end of the mounting component, and the other group of the lifting columns raises the other end of the mounting component or keeps the height of the other end of the mounting component unchanged.

Preferably, the mounting assembly includes:

mounting purlins for fixing the photovoltaic module; and

and the supporting oblique beam is fixed with the mounting purline, and the lifting upright post supports the supporting oblique beam.

Preferably, the lifting column includes:

lifting the vertical rod; and

the mounting joint is arranged at the end part of the lifting vertical rod, and when the lifting vertical rod is lifted up and down, the mounting joint can slide relative to the supporting oblique beam.

Preferably, the supporting oblique beam is provided with a sliding groove, and the sliding groove extends along the length direction of the supporting oblique beam;

the erection joint is including slider and the connector that is connected, the connector sets up the tip of lift pole setting, the slider can with spout sliding connection.

As a preferred scheme, the sliding block comprises a sliding block main body and a connecting column, the sliding block main body can be arranged in the sliding groove in a sliding mode, and two ends of the sliding block main body are connected with the connecting column;

the connector is U type connector, U type connector cover is established support the outside of sloping, the bottom plate setting of U type connector is in the tip of lift pole setting, what slider main part both ends were connected the spliced pole is stretched out the spout respectively with two curb plates of U type connector are fixed mutually.

As a preferred scheme, the sliding groove comprises a first limiting groove, a sliding groove and a second limiting groove which are sequentially communicated, the sliding block main body is arranged in the sliding groove in a sliding mode, and two ends, connected with the connecting column, of the sliding block main body are respectively abutted to groove walls of the first limiting groove and the second limiting groove.

Preferably, an elastic member is disposed in the sliding groove, and the elastic member is configured to fix the slider to the sliding groove.

Preferably, the lifting upright post assemblies are provided with a plurality of groups, and the plurality of groups of lifting upright post assemblies are arranged at intervals along the direction perpendicular to the first direction.

Preferably, the mounting purlins are arranged in a plurality, and the mounting purlins are arranged at intervals along the first direction.

Preferably, the lifting vertical rod is a hydraulic lifting rod, an electric lifting rod or a pneumatic lifting rod.

A photovoltaic power generation apparatus comprising a photovoltaic tracking support as described above.

The utility model has the beneficial effects that:

the utility model provides a photovoltaic tracking support which comprises an installation assembly and lifting upright post assemblies, wherein the installation assembly is used for fixing a photovoltaic assembly, each lifting upright post assembly comprises a plurality of groups of lifting upright posts which are arranged at intervals along a first direction, and the plurality of groups of lifting upright post assemblies jointly support the installation assembly, so that the support stability of the lifting upright post assemblies on the installation assembly is improved, the installation assembly is prevented from generating wind-induced vibration in a strong wind environment, and the structural strength and the wind resistance of the photovoltaic tracking support are improved. In addition, through adjusting the difference in height at multiunit lift stand lift installation component both ends to adjust installation component and photovoltaic module's inclination, make photovoltaic tracking support not only can realize the regulation to photovoltaic module inclination, can also realize the regulation to photovoltaic module lift height, make photovoltaic tracking support can be applicable to in the application scene of photovoltaic module lift height difference, for example can apply to large-scale photovoltaic power plant, also can apply to in the photovoltaic scene or the showy power plant that small-size family distributes, improve the commonality. The photovoltaic tracking support is more flexible to install and can be installed in a place with poor foundation construction precision, and the compatibility of the photovoltaic tracking support to installation errors is improved.

The utility model also provides a photovoltaic power generation device, and by applying the photovoltaic tracking support, the support stability of the lifting stand column assembly on the mounting assembly is improved, the mounting assembly is prevented from generating wind-induced vibration in a strong wind environment, and the structural strength and the wind resistance of the photovoltaic tracking support are improved. In addition, the photovoltaic tracking support not only can adjust the inclination angle of the photovoltaic component, but also can adjust the lifting height of the photovoltaic component, so that the applicable scenes of the photovoltaic power generation device are increased, the photovoltaic tracking support is more flexibly installed, the photovoltaic tracking support can be installed in a place with relatively poor infrastructure precision, and the compatibility of the photovoltaic tracking support to installation errors is improved.

Drawings

FIG. 1 is a schematic diagram of a photovoltaic tracking rack of the prior art;

fig. 2 is a schematic structural diagram of a photovoltaic tracking support provided by an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a photovoltaic tracking support with an adjustable inclination angle according to an embodiment of the present invention;

fig. 4 is a first schematic structural diagram of an application scenario of a photovoltaic tracking support provided in an embodiment of the present invention;

fig. 5 is a schematic structural diagram ii of an application scenario of a photovoltaic tracking support provided in an embodiment of the present invention;

fig. 6 is a schematic structural diagram three of an application scenario of a photovoltaic tracking support provided in an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a slider provided in an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a lifting column with a slider removed according to an embodiment of the present invention;

FIG. 9 is a cross-sectional view of a support diagonal provided by an embodiment of the present invention;

FIG. 10 is a schematic structural diagram of a supporting oblique beam and a sliding block provided by the embodiment of the utility model.

In the figure:

1', a rotating main shaft; 2', supporting upright posts;

1. mounting the component; 11. mounting a purline; 12. supporting the oblique beam; 121. a chute; 1211. a first limit groove; 1212. a sliding groove; 1213. a second limit groove; 122. an elastic member;

2. a lifting column assembly; 21. lifting the upright post; 211. lifting the vertical rod; 212. installing a connector; 2121. a connector; 21211. a fixing hole; 2122. a slider; 21221. a slider body; 21222. connecting columns;

3. a foundation; 4. a connecting rod.

Detailed Description

In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The embodiment provides a photovoltaic power generation device which is mainly used for converting light energy emitted by solar energy into electric energy. Specifically, photovoltaic power generation device includes photovoltaic tracking support and photovoltaic module, and wherein, photovoltaic module is the core component among the photovoltaic power generation device, can change light energy into the electric energy, and photovoltaic tracking support is used for supporting fixed photovoltaic module.

In order to solve the above problem, as shown in fig. 2, the photovoltaic tracking support provided by this embodiment includes a mounting assembly 1 and a lifting column assembly 2, wherein the mounting assembly 1 is used for fixing the photovoltaic assembly, the lifting column assembly 2 includes a plurality of sets of lifting columns 21 arranged at intervals along a first direction (Y direction in fig. 2), and the plurality of sets of lifting columns 21 support the mounting assembly 1 together, so that the supporting stability of the lifting column assembly 2 to the mounting assembly 1 is improved, the mounting assembly 1 is prevented from generating wind-induced vibration in a strong wind environment, and the structural strength and the wind resistance of the photovoltaic tracking support are improved. In addition, as shown in fig. 3, the inclination angles of the installation component 1 and the photovoltaic component can be adjusted by adjusting the height difference between the two ends of the lifting installation component 1 of the plurality of groups of lifting columns 21, so that the inclination angles of the photovoltaic component can be adjusted by the photovoltaic tracking support. Because the lifting stand column 21 can be lifted, the photovoltaic tracking support can be used for adjusting the lifting height of the photovoltaic assembly, so that the photovoltaic tracking support can be suitable for application scenes with different lifting heights of the photovoltaic assembly, and the universality is improved. The photovoltaic tracking support is more flexible to install and can be installed in a place with poor precision of fixed infrastructure, and compatibility of the photovoltaic tracking support to installation errors is improved.

Preferably, as shown in fig. 2, the lifting column assemblies 2 are provided with a plurality of sets, and the plurality of sets of lifting column assemblies 2 are arranged at intervals along a direction perpendicular to the first direction (X direction in fig. 2), so as to support the photovoltaic tracking support on the long-length photovoltaic assembly.

In this embodiment, as shown in fig. 4, the photovoltaic tracking rack can be applied in a large photovoltaic concentrated power station. Because large-scale photovoltaic concentrated power station generally requires that installation component 1 supports photovoltaic module in higher position, so need install the lift stand 21 of photovoltaic tracking support on higher basis 3 (basis 3 can be fixed foundation or pile foundation), increase cost. The photovoltaic tracking support that this embodiment provided can satisfy the demand through the height that risees lift stand subassembly 2, can reduce the height of basis 3 to a certain extent. In addition, extreme natural disasters such as flood, strong wind, and the like can be dealt with by adjusting the height of the lifting column assembly 2.

As shown in fig. 5, the photovoltaic tracking support proposed in this embodiment can also be applied to distributed photovoltaic power generation. Due to the characteristics of dispersed installation space, small space and the like of distributed photovoltaic power generation, the photovoltaic tracking support needs to be made into a miniaturized unit, and the supported height of the photovoltaic module is reduced. The photovoltaic tracking support that this embodiment provided can satisfy the demand through the height that reduces lift stand subassembly 2. Furthermore, when the photovoltaic tracking rack is facing extreme wind weather, the mounting assembly 1 can be minimized by lifting the mast assembly 2 and the mounting assembly 2 can be adjusted to a horizontal position to resist wind. When the photovoltaic tracking support meets the weather of heavy snow, the mounting assembly 1 can be lifted and adjusted to the inclination angle to remove snow through the lifting upright post assembly 2.

As shown in fig. 6, the photovoltaic tracking support provided by the embodiment can also be applied to floating photovoltaic power generation, and is very suitable for the photovoltaic tracking support because the floating photovoltaic power generation water surface is flat. In order to ensure the floating integrity of the photovoltaic tracking support on the water surface, the photovoltaic tracking support further comprises a connecting rod 4, in floating photovoltaic power generation, the foundation 3 is usually a floating cylinder, the lifting upright column 21 is fixed on the floating cylinder, the floating cylinder provides buoyancy for the whole photovoltaic tracking support, and the connecting rod 4 connects all the floating cylinders, so that the integrity of the whole photovoltaic tracking support is ensured. The photovoltaic tracking support can fully utilize the inclination angle adjusting function of the photovoltaic tracking support, and the windward area and the windward angle can be effectively adjusted, so that the anchoring force is reduced.

It should be noted that the photovoltaic tracking support provided by this embodiment may also be applied to other scenarios, and is not limited to the above application scenarios.

It should be noted that, in the present embodiment, as shown in fig. 3, two sets of lifting columns 21 are provided, and the height difference between the two ends of the lifting installation component 1 is adjusted by adjusting the two sets of lifting columns 21, so as to adjust the inclination angles of the installation component 1 and the photovoltaic module. Specifically, the mode that lift stand 21 adjusted the inclination of installation component 1 and photovoltaic module has following several forms for lift stand 21 is more nimble to the regulation of installation component 1 and photovoltaic module's inclination:

1) one of them group lift stand 21 risees the one end of installation component 1, and another group lift stand 21 reduces the other end of installation component 1 to adjust installation component 1 and photovoltaic module's inclination.

2) One of the lifting columns 21 raises one end of the mounting assembly 1, and the other lifting column 21 keeps the height of the other end of the mounting assembly 1 unchanged, so that the inclination angles of the mounting assembly 1 and the photovoltaic assembly are adjusted.

3) One of the lifting columns 21 lowers one end of the installation component 1, and the other lifting column 21 keeps the height of the other end of the installation component 1 unchanged, so that the inclination angles of the installation component 1 and the photovoltaic component are adjusted.

Referring to fig. 2, a specific structure of the installation assembly 1 is described, as shown in fig. 2, the installation assembly 1 includes an installation purlin 11 and a supporting oblique beam 12, the installation purlin 11 is used for fixing the photovoltaic module, the supporting oblique beam 12 is fixed to the installation purlin 11, and the lifting column 21 supports the supporting oblique beam 12.

Preferably, as shown in fig. 2, the installation purlins 11 are provided with a plurality of, and a plurality of installation purlins 11 are arranged along the Y direction interval, and a plurality of installation purlins 11 jointly fix photovoltaic module, improve the fixed steadiness to photovoltaic module on width direction.

Referring to fig. 2, a specific structure of the lifting column 21 is described, as shown in fig. 2, the lifting column 21 includes a lifting vertical rod 211 and a mounting joint 212, the mounting joint 212 is disposed at an end of the lifting vertical rod 211, and when the lifting vertical rod 211 lifts the mounting joint 212, the mounting joint 212 can slide relative to the supporting sloping beam 12, so as to ensure that the lifting column 21 can adjust the inclination angle of the supporting sloping beam 12 during the lifting process. Specifically, the lifting vertical rod 211 may be a hydraulic lifting rod, an electric lifting rod, or a pneumatic lifting rod, and the embodiment does not limit the specific form of the lifting vertical rod 211 as long as the lifting vertical rod 211 can be lifted. The lifting vertical rod 211 can select a corresponding foundation 3 form according to different application scenes, and the fixing of the lifting vertical rod 211 on the foundation 3 is realized.

In this embodiment, as shown in fig. 2, the supporting oblique beam 12 is provided with a sliding slot 121, the sliding slot 121 extends along the length direction of the supporting oblique beam 12, the mounting joint 212 includes a sliding block 2122 and a connecting head 2121 connected to each other, the connecting head 2121 is fixed at the end of the lifting vertical rod 211, and the sliding block 2122 can be slidably connected to the sliding slot 121. When the vertical lifting rod 211 drives the connecting head 2121 to perform lifting movement, the sliding block 2122 can slide relative to the sliding groove 121 on the oblique supporting beam 12, so as to ensure that one end of the oblique supporting beam 12 can be raised or lowered, and further adjust the inclination angle of the oblique supporting beam 12.

In order to ensure that the slider 2122 is more stably and slidably adjusted in the sliding groove 121, as shown in fig. 7 to 8, the slider 2122 includes a slider main body 21221 and a connecting column 21222, the slider main body 21221 can be slidably disposed in the sliding groove 121, both ends of the slider main body 21221 are connected to the connecting column 21222, the connector 2121 is a U-shaped connector, the U-shaped connector is sleeved outside the supporting oblique beam 12, a bottom plate of the U-shaped connector is fixed to an end of the lifting vertical rod 211, and the connecting column 21222 connected to both ends of the slider main body 21221 extends out of the sliding groove 121 to be fixed to both side plates of the U-shaped connector. By designing the connecting head 2121 as a U-shaped connecting head and arranging the slider body 21221 between the two side plates of the U-shaped connecting head, the stability of the fixing of the connecting head 2121 to the slider 2122 is improved, and the slider 2122 and the connecting head 2121 can be ensured to slide more stably relative to the entire supporting sloping beam 12.

Specifically, as shown in fig. 8, fixing holes 21211 are formed in the side plates on both sides of the U-shaped connector, and connecting posts 21222 at both ends of the slider body 21221 are respectively and correspondingly inserted into the fixing holes 21211, so as to ensure that the slider 2122 is connected with the U-shaped connector more stably.

In order to prevent the slider 2122 from coming off the sliding slot 121, as shown in fig. 9, the sliding slot 121 includes a first limiting groove 1211, a sliding groove 1212, and a second limiting groove 1213 that are sequentially connected to each other, the slider body 21221 is slidably disposed in the sliding groove 1212, two ends of the slider body 21221 connected to the connecting post 21222 are respectively abutted to groove walls of the first limiting groove 1211 and the second limiting groove 1213, the connecting post 21222 connected to two ends of the slider body 21221 respectively penetrates through the first limiting groove 1211 and the second limiting groove 1213 and is fixed in the corresponding fixing hole 21211, and the groove walls of the first limiting groove 1211 and the second limiting groove 1213 respectively serve as limiting functions for two ends of the slider body 21221, so as to ensure that the slider 2122 can only slide along the sliding slot 121, thereby preventing the slider 2122 from falling off the sliding slot 121.

Further, as shown in fig. 10, an elastic member 122 is provided in the slide groove 121, and the elastic member 122 can fix the slider 2122 to the slide groove 121. Through setting up elastic component 122, can absorb the vibration that installation component 1 produced under the effect of blowing, further reduce the wind-induced vibration of installation component 1, can also increase the support damping to slider 2122, prevent to support the sloping 12 and be in the random slip under the tilt state. When the lifting upright 211 drives the slider 2122 to lift, the slider 2122 can compress the elastic element 122 to ensure that the slider 2122 can slide relative to the sliding slot 121, and when the lifting upright 211 is stationary after lifting, the damping force of the elastic element 122 can fix the slider 2122 and the sliding slot 121. Specifically, the elastic member 122 may be a spring, when two sets of the lifting columns 21 are provided, one elastic member 122 is provided between the sliders 2122 of the two lifting columns 21, two ends of the elastic member 122 are respectively abutted against the two sliders 2122, one elastic member 122 is also provided between two ends of the sliding groove 121 and the sliders 2122 of the two lifting columns 21, and two ends of the elastic member 122 are respectively abutted against the end of the sliding groove 121 and the sliders 2122. When three or more sets of the lifting columns 21 are provided, after the elastic members 122 are provided between the two ends of the sliding grooves 121 and the sliders 2122 of the adjacent lifting columns 21, the elastic members 122 are also provided between the sliders 2122 of the adjacent lifting columns 21.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A photovoltaic tracking rack, comprising:

a mounting assembly (1) for fixing a photovoltaic assembly; and

the lifting stand column assembly (2), the lifting stand column assembly (2) includes that the multiunit is along lift stand column (21) that first direction interval was arranged, multiunit lift stand column assembly (2) supports jointly installation component (1), through adjusting the multiunit lift stand column (21) goes up and down the difference in height at installation component (1) both ends, in order to adjust installation component (1) with photovoltaic module's inclination.

2. The photovoltaic tracking rack according to claim 1, characterized in that the lifting column assemblies (2) are provided in two groups, wherein one group of the lifting columns (21) raises one end of the mounting assembly (1) and the other group of the lifting columns (21) lowers the other end of the mounting assembly (1) or keeps the height of the other end of the mounting assembly (1) constant; or

One group of the lifting columns (21) lowers one end of the mounting component (1), and the other group of the lifting columns (21) raises the other end of the mounting component (1) or keeps the height of the other end of the mounting component (1) unchanged.

3. The photovoltaic tracking rack according to claim 1, characterized in that the mounting assembly (1) comprises:

mounting purlins (11) for fixing the photovoltaic module; and

and the supporting oblique beam (12) is fixed with the mounting purline (11), and the lifting upright post (21) supports the supporting oblique beam (12).

4. Photovoltaic tracking support according to claim 3, characterized in that said lifting column (21) comprises:

a lifting upright rod (211); and

and the mounting joint (212) is arranged at the end part of the lifting vertical rod (211), and when the lifting vertical rod (211) lifts the mounting joint (212), the mounting joint (212) can slide relative to the supporting oblique beam (12).

5. The photovoltaic tracking support according to claim 4, characterized in that the supporting oblique beam (12) is provided with a sliding groove (121), and the sliding groove (121) extends along the length direction of the supporting oblique beam (12);

the erection joint (212) is including slider (2122) and connector (2121) that are connected, connector (2121) sets up the tip of lift pole setting (211), slider (2122) can with spout (121) sliding connection.

6. The photovoltaic tracking rack according to claim 5, characterized in that the slider (2122) comprises a slider body (21221) and a connecting column (21222), the slider body (21221) being slidably arranged within the runner (121), the connecting column (21222) being connected to both ends of the slider body (21221);

connector (2121) is U type connector, U type connector cover is established support the outside of sloping (12), the bottom plate setting of U type connector is in the tip of lift pole setting (211), slider main part (21221) both ends are connected spliced pole (21222) are stretched out spout (121) respectively with two curb plates of U type connector are fixed mutually.

7. The photovoltaic tracking support according to claim 6, wherein the sliding groove (121) comprises a first limiting groove (1211), a sliding groove (1212) and a second limiting groove (1213) which are sequentially communicated, the slider body (21221) is slidably disposed in the sliding groove (1212), and two ends of the slider body (21221) connected with the connecting column (21222) are respectively abutted against groove walls of the first limiting groove (1211) and the second limiting groove (1213).

8. Photovoltaic tracking support according to claim 5, characterized in that an elastic member (122) is arranged inside the runner (121), the elastic member (122) being configured to fix the slider (2122) to the runner (121).

9. The photovoltaic tracking rack according to claim 1, characterized in that the lifting column assemblies (2) are provided in a plurality of groups, the groups of lifting column assemblies (2) being arranged at intervals perpendicular to the first direction.

10. The photovoltaic tracking support according to claim 3, wherein the mounting purlins (11) are provided in plurality, and the mounting purlins (11) are arranged at intervals along the first direction.

11. Photovoltaic tracking support according to claim 4, characterized in that the lifting uprights (211) are hydraulic, electric or pneumatic lifting rods.

12. A photovoltaic power generation device comprising the photovoltaic tracking support according to any one of claims 1 to 11.