Cover plate assembly

Abstract

The invention provides a cover plate assembly used for covering a foundation pit, the cover plate assembly comprises a cover plate body, the covering area of the cover plate body is larger than the pithead area of the foundation pit; the fixing structure comprises a first fixing part and a second fixing part which are arranged below the cover plate body, the first fixing part and the second fixing part are oppositely arranged, the second fixing part is movably arranged in the first direction so that the fixing structure can adapt to foundation pits of different sizes, and the first direction is the arrangement direction of the first fixing part and the second fixing part. According to the technical scheme, the problem that different cover plates need to be configured for foundation pits of different sizes in the prior art can be effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of power equipment construction, and in particular to a cover plate assembly. Background Art

[0002] In the relevant technology, the construction of electric poles and electric towers belongs to the foundation of power construction. When constructing electric poles and electric towers, it is first necessary to dig a foundation pit, and then set up the electric poles or electric towers in the foundation pit.

[0003] In order to ensure the safety of social personnel (for example, to prevent outsiders, especially children, from falling) and to prevent debris from entering the foundation pit, a cover plate is generally installed above the foundation pit to shield the foundation pit. Since the sizes of foundation pits required for poles and towers of different sizes are different, it is necessary to configure cover plates of different sizes for these foundation pits. Summary of the invention

[0004] The main purpose of the present invention is to provide a cover plate assembly to solve the problem in the related art that different cover plates need to be configured for foundation pits of different sizes.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a cover plate assembly for covering a foundation pit, wherein the cover plate assembly includes: a cover plate body, the covering area of ​​the cover plate body is larger than the pit opening area of ​​the foundation pit; a fixing structure, including a first fixing member and a second fixing member arranged below the cover plate body, the first fixing member and the second fixing member are arranged relative to each other, and the second fixing member is movably arranged along a first direction so that the fixing structure can adapt to foundation pits of different sizes, and the first direction is the arrangement direction of the first fixing member and the second fixing member.

[0006] Furthermore, the fixing structure also includes: a third fixing member, which is arranged below the cover body; a fourth fixing member, which is arranged below the cover body and opposite to the third fixing member, and the fourth fixing member is movably arranged along the second direction, the second direction is the arrangement direction of the third fixing member and the fourth fixing member, and the second direction is arranged to intersect with the first direction.

[0007] Furthermore, the cover assembly also includes a guide structure, which includes a guide rail arranged below the cover body and a slider arranged on the second fixing member, and the slider is slidably arranged along the guide rail.

[0008] Furthermore, the guide structure also includes a locking member arranged between the guide rail and the slider, and the locking member can fix the slider on the guide rail.

[0009] Furthermore, the cover assembly also includes a retaining ring arranged below the cover body, the guide structure and the fixing structure are both located on the inner side of the retaining ring, and the height of the retaining ring is greater than or equal to the height of the guide rail.

[0010] Furthermore, the second fixing member includes a mounting seat and a fixing plate flipably arranged on the mounting seat, and the fixing plate has a storage position overlapping with the cover body and a working position arranged at an angle with the cover body.

[0011] Furthermore, the second fixing member also includes a pressure plate and a retaining member, the pressure plate has an open position and a stacking position, the retaining member applies a retaining force to the pressure plate so that the pressure plate can be maintained in the open position and the stacking position, when the pressure plate is in the open position, the pressure plate stops the fixed plate to prevent the fixed plate from leaving the working position, when the pressure plate is in the stacking position, the pressure plate avoids the fixed plate so that the fixed plate can switch from the working position to the storage position.

[0012] Furthermore, a plurality of groove structures are arranged below the cover body, and the plurality of groove structures are arranged in an array.

[0013] Furthermore, a reflective strip is arranged on the side wall of the cover body; and / or a warning light is arranged on the side wall of the cover body, and a solar cell is arranged on the upper surface of the cover body, and the solar cell can supply power to the warning light.

[0014] Furthermore, a drainage groove is arranged on the upper surface of the cover body, and the drainage groove runs through the side wall of the cover body. In the direction from the middle of the cover body to the side wall of the cover body, the bottom wall of the drainage groove is arranged to be inclined downward.

[0015] By applying the technical solution of the present invention, the cover plate body is arranged above the foundation pit, and the covering area of ​​the cover plate body is larger than the pit opening area of ​​the foundation pit, so that the foundation pit can be completely covered. The fixed structure is arranged below the cover plate body, and the fixed structure includes a first fixing member and a second fixing member arranged relatively. When the cover plate assembly is arranged on the foundation pit, the fixed structure extends into the foundation pit and the first fixing member and the second fixing member respectively abut against the side walls of the foundation pit arranged relatively, so as to ensure that the cover plate assembly is fixed relative to the foundation pit, and will not be displaced due to the accidental touch of the staff or the on-site construction equipment, so as to ensure the covering effect. And the second fixing member is movably arranged along the first direction, so that the distance between the first fixing member and the second fixing member can be adjusted, so that the fixed structure can be fixedly matched with foundation pits of different sizes. Then, a cover plate assembly of a certain size can be set, and the distance between the first fixing member and the second fixing member can be adjusted for foundation pits of different sizes. Therefore, the technical solution of the present application can effectively solve the problem that different cover plates need to be configured for foundation pits of different sizes in the related art. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 A schematic top view of an embodiment of a cover plate assembly according to the present invention is shown;

[0018] Figure 2 Shows Figure 1 A side schematic diagram of a cover plate assembly;

[0019] Figure 3 Shows Figure 1 A bottom view schematic diagram of a cover plate assembly;

[0020] Figure 4 Shows Figure 1 A schematic diagram of the three-dimensional structure of a cover plate assembly;

[0021] Figure 5 Shows Figure 4 An enlarged view of point A of the cover assembly.

[0022] The above drawings include the following reference numerals:

[0023] 10. Cover plate body; 11. Groove structure; 12. Handle;

[0024] 20, fixing structure; 21, first fixing member; 22, second fixing member; 221, mounting seat; 222, fixing plate; 223, pressing plate; 224, retaining member; 23, third fixing member; 24, fourth fixing member;

[0025] 30. Guide structure; 31. Guide rail; 32. Slider; 33. Locking member;

[0026] 40. retaining ring;

[0027] 50. Warning light;

[0028] 60. Solar cell; 61. Photovoltaic panel; 62. Battery;

[0029] a. First direction; b. Second direction. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0032] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0033] like Figures 1 to 5 As shown, the present application provides a cover plate assembly, and the embodiment of the cover plate assembly of the present application includes a cover plate body 10 and a fixing structure 20. Among them, the covering area of ​​the cover plate body 10 is larger than the pit opening area of ​​the foundation pit; the fixing structure 20 includes a first fixing member 21 and a second fixing member 22 arranged below the cover plate body 10, the first fixing member 21 and the second fixing member 22 are arranged oppositely, and the second fixing member 22 is movably arranged along a first direction a, so that the fixing structure 20 can adapt to foundation pits of different sizes, and the first direction a is the arrangement direction of the first fixing member 21 and the second fixing member 22.

[0034] Applying the technical solution of this embodiment, the cover plate body 10 is covered above the foundation pit, and the covering area of ​​the cover plate body 10 is larger than the pit opening area of ​​the foundation pit, and the foundation pit can be completely covered. The fixing structure 20 is arranged below the cover plate body 10, and the fixing structure 20 includes a first fixing member 21 and a second fixing member 22 arranged relatively. When the cover plate assembly is arranged on the foundation pit, the fixing structure 20 extends into the foundation pit and the first fixing member 21 and the second fixing member 22 respectively abut against the side walls of the foundation pit arranged relatively, so as to ensure that the position of the cover plate assembly is fixed relative to the foundation pit, and will not be displaced due to the accidental touch of the staff or the on-site construction equipment, thereby ensuring the covering effect. And the second fixing member 22 is movably arranged along the first direction a, so that the distance between the first fixing member 21 and the second fixing member 22 can be adjusted, so that the fixing structure 20 can be fixedly matched with foundation pits of different sizes. Then, a cover plate assembly of a size can be set, and for foundation pits of different sizes, the distance between the first fixing member 21 and the second fixing member 22 can be adjusted, which has the advantage of good versatility. Therefore, the technical solution of this embodiment can effectively solve the problem in the related art that different cover plates need to be configured for foundation pits of different sizes.

[0035] The covering area of ​​the cover body 10 refers to the area of ​​the lower surface of the cover body 10 , and the pit opening area of ​​the foundation pit refers to the area of ​​the opening of the foundation pit.

[0036] Specifically, in one of the present embodiments, the cover body 10 can be made of a fiberglass composite material or high-density polyethylene (HDPE). These materials have good corrosion resistance and weather resistance and are light in weight, which can prevent the cover body 10 from aging, becoming brittle or losing strength under extreme weather conditions (for example: high altitude, low temperature, and long-term exposure to sunlight), thereby ensuring the service life of the cover body 10, avoiding frequent replacement of the cover assembly, and ensuring that the foundation pit is in a safe state for a long time.

[0037] The cover assembly of the present application is mainly used to cover the foundation pit of the electric pole. When designing the covering area of ​​the cover body 10, the covering area of ​​the cover body 10 is made slightly larger than the pit opening area of ​​the largest foundation pit.

[0038] like Figure 3 and Figure 4As shown, the fixing structure 20 also includes a third fixing member 23 and a fourth fixing member 24, the third fixing member 23 is arranged below the cover body 10; the fourth fixing member 24 is arranged below the cover body 10 and is arranged opposite to the third fixing member 23, and the fourth fixing member 24 is movably arranged along the second direction b, the second direction b is the arrangement direction of the third fixing member 23 and the fourth fixing member 24, and the second direction b is arranged to intersect with the first direction a. When the cover assembly is arranged on the foundation pit, the fixing structure 20 extends into the foundation pit and the third fixing member 23 and the fourth fixing member 24 respectively abut against the side walls of the foundation pit that are arranged oppositely, so as to ensure that the position of the cover assembly is fixed relative to the foundation pit. The fourth fixing member 24 is movably arranged along the second direction b, so that the distance between the third fixing member 23 and the fourth fixing member 24 can be adjusted, so that the fixing structure 20 can be fixedly matched with foundation pits of different sizes. Among them, the second direction b is arranged to intersect with the first direction a, so that the cover assembly and the foundation pit can be fixed in at least two directions, ensuring the fixing effect of the cover assembly at the pit mouth of the foundation pit. Specifically, in this embodiment, the first direction a is perpendicular to the second direction b.

[0039] like Figure 4 and Figure 5 As shown, the cover assembly further includes a guide structure 30, which includes a guide rail 31 disposed below the cover body 10 and a slider 32 disposed on the second fixing member 22, and the slider 32 is slidably disposed along the guide rail 31. The position of the second fixing member 22 can be adjusted by the slidably matched guide rail 31 and the slider 32, which has the advantages of simple structure and easy control.

[0040] Specifically, in this embodiment, the first fixing member 21, the second fixing member 22, the third fixing member 23 and the fourth fixing member 24 are all adjustable members. Among them, the first fixing member 21 and the second fixing member 22 are adjustable in position along the first direction a, and the third fixing member 23 and the fourth fixing member 24 are adjustable in position along the second direction b. A guide structure 30 is provided between the first fixing member 21 and the cover body 10, between the second fixing member 22 and the cover body 10, between the third fixing member 23 and the cover body 10, and between the fourth fixing member 24 and the cover body 10.

[0041] like Figure 4 and Figure 5 As shown, the guide structure 30 also includes a locking member 33 disposed between the guide rail 31 and the slider 32, and the locking member 33 can fix the slider 32 on the guide rail 31. After the position of the second fixing member 22 is adjusted, the slider 32 is locked on the guide rail 31 by the locking member 33, so that the slider 32 is fixed, thereby ensuring the fixing effect between the cover assembly and the foundation pit.

[0042] Specifically, the locking member 33 is a locking screw, which includes a screw and an operating cap disposed at a first end of the screw, and the screw is disposed through one of the slider 32 and the guide rail 31. When the locking member 33 is tightened, the second end of the screw abuts against the other of the slider 32 and the guide rail 31 to lock the slider 32; when the locking member 33 is loosened, the second end of the screw is separated from the other of the slider 32 and the guide rail 31, so that the slider 32 can slide along the guide rail 31 to adjust the position of the second fixing member 22.

[0043] Specifically, in this embodiment, the fixing structure 20 is arranged below the cover plate body 10. When installing the cover plate assembly, the positions of the first fixing member 21, the second fixing member 22, the third fixing member 23 and the fourth fixing member 24 are first adjusted and locked according to the size of the foundation pit, and then the fixing structure 20 is extended downward into the foundation pit. The guide structure 30 of this embodiment is provided to facilitate the staff to quickly install and remove the cover plate assembly.

[0044] like Figure 2 and Figure 4 As shown, the cover assembly also includes a retaining ring 40 disposed below the cover body 10, and the guide structure 30 and the fixed structure 20 are both located inside the retaining ring 40, and the height of the retaining ring 40 is greater than or equal to the height of the guide rail 31. The retaining ring 40 is located below the cover body 10 and is arranged around the outside of the fixed structure 20 and the guide structure 30, and the inner surface of the retaining ring 40 is arranged around the pit opening of the foundation pit (that is, the area of ​​the area surrounded by the inner surface of the retaining ring 40 is greater than the pit opening area of ​​the foundation pit). Since the height of the retaining ring 40 is greater than or equal to the height of the guide rail 31, when the cover assembly is set on the foundation pit, the retaining ring 40 is supported on the ground around the foundation pit and there is basically no gap with the ground around the foundation pit, which increases the stability of the cover assembly, and makes it difficult for foreign objects (such as leaves, wood chips, gravel, etc.) and rainwater to enter the interior of the foundation pit, ensuring that the interior of the foundation pit is dry and free of debris, avoiding water accumulation inside the foundation pit to cause mosquito breeding, causing safety and health hazards, etc., and ensuring construction quality and efficiency.

[0045] like Figure 4 and Figure 5As shown, the second fixing member 22 includes a mounting seat 221 and a fixing plate 222 which is flippably arranged on the mounting seat 221, and the fixing plate 222 has a storage position which is overlapped with the cover body 10 and a working position which is angled with the cover body 10. When the fixing plate 222 is in the storage position, the fixing plate 222 is overlapped with the cover body 10 (that is, the fixing plate 222 is substantially parallel to the cover body 10), so that the overall height of the cover assembly becomes lower, thereby facilitating the packaging and transportation of the cover assembly; when the fixing plate 222 is in the working position, the fixing plate 222 is angled with the cover body 10 (specifically 90°±10°), so that there is a larger abutment area between the fixing plate 222 and the side wall of the foundation pit, thereby ensuring the fixing effect.

[0046] like Figure 4 and Figure 5 As shown, the second fixing member 22 also includes a pressing plate 223 and a retaining member 224. The pressing plate 223 has an open position and a stacking position. The retaining member 224 applies a retaining force to the pressing plate 223 so that the pressing plate 223 can be maintained in the open position and the stacking position. When the pressing plate 223 is located at the open position, the pressing plate 223 stops the fixing plate 222 to prevent the fixing plate 222 from leaving the working position. When the pressing plate 223 is located at the stacking position, the pressing plate 223 avoids the fixing plate 222 so that the fixing plate 222 can switch from the working position to the storage position.

[0047] The retaining member 224 includes a spring, and the pressure plate 223 includes a plate body and a limiting shaft arranged on the plate body. One end of the spring is connected to the mounting seat 221, and the other end of the spring is connected to the limiting shaft and applies a pulling force to the limiting shaft. The mounting seat 221 is provided with a first limiting groove and a second limiting groove, wherein the first limiting groove and the second limiting groove are both long groove structures with one end open, the first limiting groove extends in the vertical direction, and the second limiting groove extends in the transverse direction (the vertical direction and the transverse direction here correspond to Figure 2 The vertical direction and the horizontal direction in the cover body 10 are not limited to the horizontal direction and the vertical direction, and can also be a direction with a certain angle to the horizontal direction and the vertical direction). When the pressing plate 223 is switched to the open position, the limiting shaft is correspondingly arranged with the notch of the first limiting groove, and the spring pulls the limiting shaft toward the groove bottom direction of the first limiting groove, so that the pressing plate 223 is kept in the open position; when the pressing plate 223 needs to be switched to the stacking position, the pressing plate 223 is first pulled outward to disengage the limiting shaft from the first limiting groove, and then the pressing plate 223 is flipped toward the middle of the cover body 10 so that the pressing plate is switched from the open position to the stacking position. At this time, the limiting shaft is correspondingly arranged with the notch of the second limiting groove, and the spring pulls the limiting shaft toward the groove bottom direction of the second limiting groove, so that the pressing plate 223 is kept in the stacking position.

[0048] In this embodiment, the structural composition of the first fixing member 21 , the third fixing member 23 , and the fourth fixing member 24 is the same as that of the second fixing member 22 , and will not be described in detail herein.

[0049] like Figure 3 and Figure 4 As shown, a plurality of groove structures 11 are arranged below the cover body 10, and the plurality of groove structures 11 are arranged in an array. By arranging a plurality of groove structures 11 on the lower surface of the cover body 10, the weight of the cover assembly can be reduced and the structural strength of the cover body 10 can be improved.

[0050] In order to further increase the structural strength of the cover plate body 10 , a supporting rib structure (eg, steel bars) may be provided inside the groove structure 11 .

[0051] In this embodiment, a reflective strip is provided on the side wall of the cover body 10. The provision of the reflective strip can remind nearby personnel of the presence of the cover assembly in a poorly lit environment, thereby avoiding safety accidents such as tripping of nearby personnel.

[0052] like Figure 1 and Figure 2 As shown, a warning light 50 is provided on the side wall of the cover body 10, and a solar cell 60 is provided on the upper surface of the cover body 10, and the solar cell 60 can supply power to the warning light 50. The warning light 50 can remind nearby personnel of the existence of the cover assembly in a poorly lit environment to avoid safety accidents in which nearby personnel step on air and fall. The solar cell 60 supplies power to the warning light 50 to ensure the normal operation of the warning light 50. Specifically, the solar cell 60 includes a photovoltaic panel 61 and a battery 62, and the photovoltaic panel 61 can convert light energy into electrical energy and store it in the battery 62, and the battery 62 supplies power to the warning light 50.

[0053] In this embodiment, a drainage groove is provided on the upper surface of the cover body 10, and the drainage groove runs through the side wall of the cover body 10. The bottom wall of the drainage groove is inclined downward in the direction from the middle of the cover body 10 to the side wall of the cover body 10. The drainage groove can drain rainwater and the like gathered above the cover body 10. In addition, due to the provision of the drainage groove, the surface of the cover body 10 has a concave-convex structure, so that it is not easy for workers to slip when stepping on the cover body 10.

[0054] like Figure 1 and Figure 2 As shown, a handle 12 is provided on the outer periphery of the cover plate body 10 to facilitate construction workers to carry the cover body assembly to the foundation pit and place the cover plate assembly above the foundation pit.

[0055] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0056] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0057] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cover plate assembly, used to cover a foundation pit, characterized in that: The cover plate assembly comprises: A cover plate body (10), wherein the covering area of ​​the cover plate body (10) is larger than the pit opening area of ​​the foundation pit; A fixing structure (20) comprises a first fixing member (21) and a second fixing member (22) arranged below the cover plate body (10), wherein the first fixing member (21) and the second fixing member (22) are arranged relative to each other, and the second fixing member (22) is movably arranged along a first direction (a) so that the fixing structure (20) can adapt to foundation pits of different sizes, and the first direction (a) is the arrangement direction of the first fixing member (21) and the second fixing member (22).

2. The cover plate assembly according to claim 1, characterized in that: The fixing structure (20) further comprises: A third fixing member (23) is arranged below the cover plate body (10); A fourth fixing member (24) is arranged below the cover plate body (10) and opposite to the third fixing member (23); the fourth fixing member (24) is movably arranged along a second direction (b); the second direction (b) is the arrangement direction of the third fixing member (23) and the fourth fixing member (24); the second direction (b) intersects with the first direction (a).

3. The cover plate assembly according to claim 1, characterized in that: The cover assembly also includes a guide structure (30), the guide structure (30) including a guide rail (31) arranged below the cover body (10) and a slider (32) arranged on the second fixing member (22), and the slider (32) is slidably arranged along the guide rail (31).

4. The cover plate assembly according to claim 3, characterized in that: The guide structure (30) further comprises a locking member (33) arranged between the guide rail (31) and the slider (32), wherein the locking member (33) is capable of fixing the slider (32) on the guide rail (31).

5. The cover plate assembly according to claim 3, characterized in that: The cover plate assembly further comprises a retaining ring (40) arranged below the cover plate body (10); the guide structure (30) and the fixing structure (20) are both located on the inner side of the retaining ring (40); and the height of the retaining ring (40) is greater than or equal to the height of the guide rail (31).

6. The cover plate assembly according to any one of claims 1 to 5, characterized in that: The second fixing member (22) comprises a mounting seat (221) and a fixing plate (222) which is flippably arranged on the mounting seat (221); the fixing plate (222) has a storage position which is overlapped with the cover body (10) and a working position which is arranged at an angle with the cover body (10).

7. The cover plate assembly according to claim 6, characterized in that: The second fixing member (22) further comprises a pressing plate (223) and a retaining member (224), wherein the pressing plate (223) has an open position and a stacking position, and the retaining member (224) applies a retaining force to the pressing plate (223) so that the pressing plate (223) can be maintained in the open position and the stacking position. When the pressing plate (223) is located at the open position, the pressing plate (223) stops the fixing plate (222) to prevent the fixing plate (222) from being separated from the working position. When the pressing plate (223) is located at the stacking position, the pressing plate (223) avoids the fixing plate (222) so that the fixing plate (222) can be switched from the working position to the storage position.

8. The cover plate assembly according to any one of claims 1 to 5, characterized in that: A plurality of groove structures (11) are arranged below the cover plate body (10), and the plurality of groove structures (11) are arranged in an array.

9. The cover plate assembly according to any one of claims 1 to 5, characterized in that: A reflective strip is provided on the side wall of the cover body (10); and / or, A warning light (50) is arranged on the side wall of the cover body (10), and a solar cell (60) is arranged on the upper surface of the cover body (10), and the solar cell (60) can supply power to the warning light (50).

10. The cover plate assembly according to any one of claims 1 to 5, characterized in that: A drainage groove is arranged on the upper surface of the cover body (10), and the drainage groove runs through the side wall of the cover body (10). In the direction from the middle of the cover body (10) to the side wall of the cover body (10), the bottom wall of the drainage groove is arranged to be inclined downward.

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