Protective fence for grating ground

Abstract

The utility model relates to the technical field of protective fences, in particular to a protective fence for a grating ground. Comprising a plurality of guardrail bodies, a clamping mechanism, an adjusting mechanism and a locking mechanism. The plurality of guardrail main bodies are detachably connected through the locking mechanisms; the clamping mechanism is provided with a first limiting mechanism, and a second limiting mechanism is arranged at the bottom of the guardrail body. The clamping mechanism is installed on the guardrail body in a sliding mode, the first limiting mechanism and the second limiting mechanism are oppositely arranged, and the adjusting mechanism is connected with the guardrail body and the clamping mechanism and used for adjusting the distance between the first limiting mechanism and the second limiting mechanism. The protective fence used for the grating ground can be stably installed on the grating ground and is convenient to install and detach. And the guardrail main bodies are detachably connected, so that the guardrail can adapt to different application scenes, and protective barriers in different shapes can be enclosed.

Description

Technical Field

[0001] The utility model relates to the technical field of guardrails, and more specifically, to a guardrail for a grid floor. Background Art

[0002] The floor of the spray booth is paved with grids, and the grids need to be lifted for operation, which poses a risk of falling from a height; since the area with a grid floor basically belongs to a fire and explosion prevention area, it is impossible to use welding, cutting and other methods to manufacture / fix temporary rigid guardrails; during operation, a simple protection form of using traffic cones for warning is generally adopted; or a movable simple guardrail is used. This kind of guardrail can quickly realize the warning enclosure of the edge area, but there are still two problems that are difficult to solve: ① It cannot be fixed on the grid floor and requires special parts such as snap fasteners to be fixed on the grid floor, which is not convenient for installation and disassembly; ② It does not form a complete protection barrier and cannot prevent personnel from falling towards the opening position during operation. There are still potential safety hazards due to insufficient protection. Content of the Utility Model

[0003] The utility model aims to overcome the above-mentioned defects in the prior art and provides a guardrail for a grid floor, which can be stably fixed on the grid bottom plate and is convenient for installation and disassembly.

[0004] To solve the above technical problems, the technical solution adopted by the utility model is:

[0005] A guardrail for a grid floor includes a plurality of guardrail bodies, a clamping mechanism, an adjusting mechanism and a locking mechanism; the plurality of guardrail bodies are detachably connected by the locking mechanism; the clamping mechanism is provided with a first limiting mechanism, and the bottom of the guardrail body is provided with a second limiting mechanism; the clamping mechanism is slidably installed on the guardrail body, and the first limiting mechanism and the second limiting mechanism are arranged opposite to each other, and the adjusting mechanism is respectively connected with the guardrail body and the clamping mechanism for adjusting the distance between the first limiting mechanism and the second limiting mechanism.

[0006] According to the above technical means, multiple guardrail bodies are detachably connected through a locking mechanism. According to requirements, the guardrail bodies can be surrounded into the required shape and can be assembled into an annular structure, so that protection can be provided in all directions. On the other hand, through the first limiting mechanism and the second limiting mechanism, the guardrail body can be fixed on the grid floor. The first limiting mechanism is inserted under the grid floor, and then the distance between the first limiting mechanism and the second limiting mechanism is adjusted so that the distance value is equal to the thickness value of the grid floor, so that the first limiting mechanism and the second limiting mechanism are clamped on the grid floor. Through the setting of the clamping mechanism and the second limiting mechanism, the guardrail can be fixed on the grid floor and can be disassembled at any time; and the structure is simple, and it is convenient for installation and disassembly; the installation protection performance is improved.

[0007] In one embodiment, the clamping mechanism includes a first limiting mechanism and a first adjusting rod; the guardrail body includes a hollow vertical rod, and the second limiting mechanism is arranged at the bottom of the vertical rod; one end of the first adjusting rod is connected to the first limiting mechanism; the first adjusting rod passes through the vertical rod and is slidably connected to the vertical rod; the first limiting mechanism is located directly below the second limiting mechanism; the adjusting mechanism is installed on the vertical rod and is connected to the other end of the first adjusting rod. The second limiting mechanism can be a limiting plate, and the limiting plate is sleeved at the bottom of the vertical rod, which can increase the contact area between the vertical rod and the ground and make standing more stable; a first limiting mechanism is arranged at the bottom end of the first adjusting rod, and the first limiting mechanism can be inserted into the space of the grid floor. During installation, the first limiting mechanism is inserted into the space, and then the first adjusting rod is adjusted through the adjusting mechanism, that is, the first adjusting rod is slid upward, so that the distance between the first limiting mechanism and the second limiting mechanism is reduced until the grid is clamped.

[0008] In one embodiment, the adjusting mechanism is an adjusting sleeve; an external thread structure is provided at the top of the vertical rod; a third limiting mechanism is provided at the top of the clamping mechanism; the adjusting sleeve is sleeved on the vertical rod and is threadedly connected to the vertical rod at one end; the other end of the adjusting sleeve abuts against the third mechanism. One end of the adjusting sleeve abuts against the third limiting mechanism, and by rotating the adjusting sleeve, the first adjusting rod can be pulled upward.

[0009] In one embodiment, the clamping mechanism further includes a second adjusting rod; the second adjusting rod is inserted into the first adjusting rod and is slidably connected to the first adjusting rod; one end of the second adjusting rod is rotatably connected to the first limiting mechanism, and the third limiting mechanism is installed at the other end of the second adjusting rod; the first limiting mechanism is rotatably connected to the first adjusting rod. The adjusting sleeve body is against the third limiting mechanism, and when the adjusting sleeve is rotated upward, the adjusting sleeve pushes the third limiting mechanism to move upward. Since the other ends of the two adjusting rods are connected to the first limiting mechanism, and the second limiting mechanism is connected to the first adjusting rod, the first adjusting rod and the second adjusting rod can be driven to move upward at the same time; by adjusting the distance between the third limiting mechanism and the adjusting sleeve, the position of the first adjusting rod relative to the second adjusting rod can be adjusted.

[0010] In one embodiment, the first limiting mechanism includes a first limiting block, a second limiting block, a first connecting rod, and a second connecting rod; one end of the first block and one end of the second limiting block are both rotatably connected to the bottom of the first adjusting rod through a rotating shaft; one end of the first connecting rod is hinged to the bottom of the first adjusting rod, and the other end is hinged to one end of the first limiting block close to the connecting seat; one end of the second connecting rod is hinged to the bottom of the first adjusting rod, and the other end is hinged to one end of the second limiting block close to the connecting seat; relative to the first adjusting rod, axially moving the second adjusting rod can make the first limiting block and the second limiting block relatively close or open. Move the second adjusting rod upward, and the first limiting block and the second limiting block are opened; move the second adjusting rod downward, and the first limiting block and the second limiting block are closed together. During installation, the first limiting block and the second limiting block are first closed to facilitate insertion into the space of the grid floor, and then the first limiting block and the second limiting block are opened after insertion to facilitate clamping. Moreover, after opening, the guardrail cannot be moved at will, which enhances safety performance.

[0011] In one embodiment, the first limit block and the second limit block are both provided with receiving grooves, and when the first limit block and the second limit block are relatively closed, the first connecting rod and the second connecting rod are respectively located in the two receiving grooves.

[0012] In one embodiment, the first limiting block is provided with a first connecting pair, and the second limiting block is provided with a second connecting pair. The first connecting pair is perpendicularly arranged with respect to the first limiting block, and the second connecting pair is perpendicularly arranged with respect to the second limiting block. The first connecting pair and the second connecting pair are rotationally connected to the second adjusting rod through a rotating shaft. When the first limiting block and the second limiting block are unfolded relative to each other, one end of the first limiting block provided with the first connecting pair abuts against the second connecting pair. After unfolding, the first limiting block abuts against the second connecting pair, thereby restricting the unfolding angle of the first limiting block and the second limiting block. Due to the limitation of the adjusting sleeve, the first limiting block and the second limiting block can always remain in the unfolded state, thus ensuring that the bottom plates of each station are clamped during use and the guardrail cannot be moved.

[0013] In one embodiment, the third limiting mechanism includes a limiting platform and a limiting rod. One end of the limiting rod is hinged to the limiting platform, and the other end can abut against the adjusting sleeve. By providing the limiting rod, the distance between the limiting platform and the adjusting sleeve can be adjusted. When the limiting rod is rotated so that the limiting platform directly abuts against the adjusting sleeve, the first adjusting rod moves downward, and the first limiting block and the second limiting block are relatively folded. When the limiting rod is rotated so that the limiting rod abuts against the adjusting sleeve, at this time, the first limiting block and the second limiting block are relatively unfolded. Rotating the adjusting sleeve can simultaneously drive the first adjusting rod, the second adjusting rod, the first limiting block, and the second limiting block to move upward.

[0014] In one embodiment, the guardrail main body includes at least two vertical rods and at least two horizontal rods. The two ends of the two horizontal rods are respectively connected to the two vertical rods, and the two horizontal rods are arranged in parallel and at intervals. The locking mechanism is a limiting sleeve, and the two ends of the limiting sleeve are respectively sleeved on the tops of two adjacent vertical rods. The limiting sleeve is designed in a U-shaped structure and is respectively sleeved on the two vertical rods at both ends, which is quick and convenient to install.

[0015] In one embodiment, the horizontal rod includes a first horizontal rod and a hollow second horizontal rod. One end of the first horizontal rod is connected to one of the vertical rods, and the other end of the first horizontal rod passes through the second horizontal rod. The other end of the second horizontal rod is connected to the other vertical rod. A screw hole is provided in the first horizontal rod, and a set screw is provided at the screw hole. The first horizontal rod is inserted into the second horizontal rod and is slidably connected to the second horizontal rod. Adjusting the relative position of the first horizontal rod and the second horizontal rod can change the length of the guardrail main body to adapt to different scenarios.

[0016] Compared with the prior art, the beneficial effects are as follows: A guardrail for a grid floor provided by the present invention can be stably installed on the grid floor and is convenient for installation and disassembly. The detachable connection between the guardrail main bodies can adapt to different application scenarios and enclose guard barriers of different shapes. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0018] Figure 2 It is a schematic diagram of the main structure of the guardrail of the present utility model.

[0019] Figure 3 It is Figure 2 A partial enlarged schematic diagram of A in

[0020] Figure 4 It is Figure 2 A partial enlarged schematic diagram of B in

[0021] Figure 5 It is Figure 2 A partial enlarged schematic diagram of C in

[0022] Figure 6 It is Figure 2 A partial enlarged schematic diagram of D in

[0023] Reference numerals: 1, guardrail main body; 2, adjusting mechanism; 3, locking mechanism; 4, first limiting mechanism; 5, second limiting mechanism; 6, vertical rod; 7, first adjusting rod; 8, second adjusting rod; 9, limiting platform; 10, limiting rod; 11, first limiting block; 12, second limiting block; 13, second connecting rod; 14, first connecting rod; 15, cross bar; 16, second cross bar; 17, first cross bar; 18, set screw. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. The present utility model will be described below in one of the embodiments in conjunction with the specific embodiments. Among them, the accompanying drawings are only for illustrative purposes, showing only schematic diagrams, rather than physical diagrams, and should not be construed as a limitation to the present utility model; in order to better illustrate the embodiments of the present utility model, some components in the accompanying drawings will be omitted, enlarged or reduced, and do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted.

[0025] In the description of the present utility model, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc., indicating the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and cannot be understood as a limitation to the present utility model. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances. In addition, if the embodiments of the present utility model involve descriptions such as "first", "second", etc., such descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the technical features indicated. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or a solution that satisfies both A and B at the same time.

[0026] Embodiment 1:

[0027] As Figures 1 to 6 shown, a guardrail for a grid floor includes a plurality of guardrail bodies 1, a clamping mechanism, an adjusting mechanism 2, and a locking mechanism 3; the plurality of guardrail bodies 1 are detachably connected through the locking mechanism 3; the clamping mechanism is provided with a first limiting mechanism 4, and the bottom of the guardrail body 1 is provided with a second limiting mechanism 5; the clamping mechanism is slidably installed on the guardrail body 1, and the first limiting mechanism 4 and the second limiting mechanism 5 are arranged opposite to each other. The adjusting mechanism 2 is respectively connected to the guardrail body 1 and the clamping mechanism for adjusting the distance between the first limiting mechanism 4 and the second limiting mechanism 5.

[0028] According to the above technical means, the plurality of guardrail bodies 1 are detachably connected through the locking mechanism 3, and the guardrail bodies 1 can be surrounded into the required shape according to needs and can be assembled into an annular structure, so that protection can be provided in all directions; on the other hand, through the first limiting mechanism 4 and the second limiting mechanism 5, the guardrail body 1 can be fixed on the grid floor. The first limiting mechanism 4 is extended under the grid floor, and then the distance between the first limiting mechanism 4 and the second limiting mechanism 5 is adjusted so that the distance value is equal to the thickness value of the grid floor, so that the first limiting mechanism 4 and the second limiting mechanism 5 are clamped on the grid floor. Through the setting of the clamping mechanism and the second limiting mechanism 5, the guardrail can be fixed on the grid floor and can be disassembled at any time; and the structure is simple, and it is also convenient for installation and disassembly; the performance of installation and protection is improved.

[0029] As Figures 2 to 6As shown in the figure, the clamping mechanism includes a first limiting mechanism 4 and a first adjusting rod 7; the guardrail main body 1 includes a hollow vertical rod 6, and a second limiting mechanism 5 is arranged at the bottom of the vertical rod 6; one end of the first adjusting rod 7 is connected to the first limiting mechanism 4; the first adjusting rod 7 passes through the vertical rod 6 and is slidably connected to the vertical rod 6; the first limiting mechanism 4 is located directly below the second limiting mechanism 5; the adjusting mechanism 2 is installed on the vertical rod 6 and is connected to the other end of the first adjusting rod 7. The second limiting mechanism 5 can be a limiting plate, and the limiting plate is sleeved at the bottom of the vertical rod 6, which can increase the contact area between the vertical rod 6 and the ground and make it stand more stably; a first limiting mechanism 4 is arranged at the bottom end of the first adjusting rod 7, and the first limiting mechanism 4 can be inserted into the space of the grid floor. During installation, the first limiting mechanism 4 is inserted into the space, and then the first adjusting rod 7 is adjusted by the adjusting mechanism 2, that is, the first adjusting rod 7 is slid upward to reduce the distance between the first limiting mechanism 4 and the second limiting mechanism 5 until the grid is clamped.

[0030] As Figure 2 , Figure 3 , Figure 5 shown in the figure, the adjusting mechanism 2 is an adjusting sleeve; an external thread structure is provided at the top of the vertical rod 6; a third limiting mechanism is provided at the top of the clamping mechanism; the adjusting sleeve is sleeved on the vertical rod 6, and one end is threadedly connected to the vertical rod 6; the other end of the adjusting sleeve abuts against the third mechanism. One end of the adjusting sleeve abuts against the third limiting mechanism. By rotating the adjusting sleeve, the first adjusting rod 7 can be pulled upward.

[0031] As Figures 2 to 6 shown in the figure, the clamping mechanism further includes a second adjusting rod 8; the second adjusting rod 8 passes through the first adjusting rod 7 and is slidably connected to the first adjusting rod 7; one end of the second adjusting rod 8 is rotatably connected to the first limiting mechanism 4, and a third limiting mechanism is installed at the other end of the second adjusting rod 8; the first limiting mechanism 4 is rotatably connected to the first adjusting rod 7. The adjusting sleeve abuts against the third limiting mechanism. When the adjusting sleeve is rotated upward, the adjusting sleeve pushes the third limiting mechanism upward. Since the other end of the second adjusting rod is connected to the first limiting mechanism 4 and the second limiting mechanism 5 is connected to the first adjusting rod 7, the first adjusting rod 7 and the second adjusting rod 8 can be driven to move upward simultaneously; by adjusting the distance between the third limiting mechanism and the adjusting sleeve, the position of the first adjusting rod 7 relative to the second adjusting rod 8 can be adjusted.

[0032] As Figure 4 and Figure 6As shown, the first limiting mechanism 4 includes a first limiting block 11, a second limiting block 12, a first connecting rod 14, and a second connecting rod 13; one end of the first limiting block and one end of the second limiting block 12 are both rotatably connected to the bottom of the first adjusting rod 7 through a rotating shaft; one end of the first connecting rod 14 is hinged to the bottom of the first adjusting rod 7, and the other end is hinged to one end of the first limiting block 11 close to the connecting seat; one end of the second connecting rod 13 is hinged to the bottom of the first adjusting rod 7, and the other end is hinged to one end of the second limiting block 12 close to the connecting seat; relative to the first adjusting rod 7, axially moving the second adjusting rod 8 can make the first limiting block 11 and the second limiting block 12 relatively close or open. Move the second adjusting rod 8 upward, and the first limiting block 11 and the second limiting block 12 are opened; move the second adjusting rod 8 downward, and the first limiting block 11 and the second limiting block 12 are retracted. During installation, the first stopper 11 and the second stopper 12 are first folded together to facilitate insertion into the space of the grid floor, and then the first stopper 11 and the second stopper 12 are unfolded after insertion to facilitate clamping. Moreover, after unfolding, the guardrail cannot be moved at will, which enhances safety performance.

[0033] like Figure 4 and Figure 6 As shown, the first limit block 11 is provided with a first connection pair, the second limit block 12 is provided with a second connection pair, the first connection pair is vertically arranged with the first limit block 11, the second connection pair is vertically arranged with the second limit block 12, and the first connection pair and the second connection pair are rotatably connected with the second adjustment rod 8 through a rotating shaft; when the first limit block 11 and the second limit block 12 are relatively unfolded, one end of the first connection pair provided with the first limit block 11 abuts against the second connection pair. After unfolding, the first limit block 11 abuts against the second connection pair, thereby limiting the unfolding angle of the first limit block 11 and the second limit block 12. Due to the limitation of the adjustment sleeve, the first limit block 11 and the second limit block 12 can always remain in the unfolded state, thereby ensuring that the bottom plate of each station is clamped during use and the guardrail cannot be moved.

[0034] like Figure 3 and Figure 5 As shown, the third limiting mechanism includes a limiting platform 9 and a limiting rod 10, one end of the limiting rod 10 is hinged to the limiting platform 9, and the other end can be against the adjustment sleeve. By setting the limiting rod 10, the distance between the limiting platform 9 and the adjustment sleeve can be adjusted; when the limiting rod 10 is rotated, the limiting platform 9 is directly against the adjustment sleeve, the first adjustment rod 7 moves downward, and the first limiting block 11 and the second limiting block 12 are relatively retracted; when the limiting rod 10 is rotated so that the limiting rod 10 and the adjustment sleeve are against each other, the first limiting block 11 and the second limiting block 12 are relatively expanded, and the adjustment sleeve can be rotated to simultaneously drive the first adjustment rod 7, the second adjustment rod 8, the first limiting block 11, and the second limiting block 12 to move upward.

[0035] The guardrail main body 1 includes at least two vertical rods 6 and at least two horizontal rods 15. The two ends of the two horizontal rods 15 are respectively connected to the two vertical rods 6, and the two horizontal rods 15 are arranged in parallel and at intervals; the locking mechanism 3 is a limit sleeve, and the two ends of the limit sleeve are respectively sleeved on the tops of two adjacent vertical rods 6. The limit sleeve is designed in a U-shaped structure and is respectively sleeved on the two vertical rods 6 at both ends; the installation is quick and convenient.

[0036] Embodiment 2:

[0037] As Figure 1 and Figure 2 shown; other structures of this embodiment are the same as those of Embodiment 1. The difference is that in this embodiment, the horizontal rod 15 includes a first horizontal rod 17 and a hollow second horizontal rod 16; one end of the first horizontal rod 17 is connected to one of the vertical rods 6, and the other end of the first horizontal rod 17 passes through the second horizontal rod 16; the other end of the second horizontal rod 16 is connected to the other vertical rod 6; a screw hole is provided in the first horizontal rod 17, and a set screw 18 is provided at the screw hole. The first horizontal rod 17 is inserted into the second horizontal rod 16 and is slidably connected to the second horizontal rod 16. By adjusting the relative position of the first horizontal rod 17 and the second horizontal rod 16, the length of the guardrail main body 1 can be changed to adapt to different scenarios.

[0038] Embodiment 3:

[0039] As Figure 4 and Figure 6 shown, other structures of this embodiment are the same as those of Embodiment 1. The difference is that in this embodiment, both the first limit block 11 and the second limit block 12 are provided with storage grooves. When the first limit block 11 and the second limit block 12 are closed relative to each other, the first connecting rod 14 and the second connecting rod 13 are respectively located in the two storage grooves.

[0040] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without conflict, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0041] Obviously, the above embodiments of the present utility model are merely examples for clearly explaining the present utility model, rather than limitations on the implementation manners of the present utility model. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation manners here. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the claims of the present utility model.

Claims

1. A guardrail for a grid floor, characterized in that, It includes multiple guardrail bodies (1), a clamping mechanism, an adjusting mechanism (2), and a locking mechanism (3); the multiple guardrail bodies (1) are detachably connected through the locking mechanism (3); the clamping mechanism is provided with a first limiting mechanism (4), and the bottom of the guardrail body (1) is provided with a second limiting mechanism (5); the clamping mechanism is slidably installed on the guardrail body (1), and the opposite surfaces of the first limiting mechanism (4) and the second limiting mechanism (5) are arranged facing each other, and the adjusting mechanism (2) is respectively connected to the guardrail body (1) and the clamping mechanism for adjusting the distance between the first limiting mechanism (4) and the second limiting mechanism (5).

2. The guardrail for a grid floor according to claim 1, characterized in that, The clamping mechanism includes a first limiting mechanism (4) and a first adjusting rod (7); the guardrail body (1) includes a hollow vertical rod (6), and the second limiting mechanism (5) is arranged at the bottom of the vertical rod (6); one end of the first adjusting rod (7) is connected to the first limiting mechanism (4); the first adjusting rod (7) passes through the vertical rod (6) and is slidably connected to the vertical rod (6); the first limiting mechanism (4) is located directly below the second limiting mechanism (5); the adjusting mechanism (2) is installed on the vertical rod (6) and is connected to the other end of the first adjusting rod (7).

3. The guardrail for a grid floor according to claim 2, characterized in that, The adjusting mechanism (2) is an adjusting sleeve; an external thread structure is provided at the top of the vertical rod (6); a third limiting mechanism is provided at the top of the clamping mechanism; the adjusting sleeve is sleeved on the vertical rod (6), and one end is threadedly connected to the vertical rod (6); the other end of the adjusting sleeve abuts against the third mechanism.

4. The guardrail for a grid floor according to claim 3, characterized in that, The clamping mechanism further includes a second adjusting rod (8); the second adjusting rod (8) passes through the first adjusting rod (7) and is slidably connected to the first adjusting rod (7); one end of the second adjusting rod (8) is rotatably connected to the first limiting mechanism (4), and the third limiting mechanism is installed at the other end of the second adjusting rod (8); the first limiting mechanism (4) is rotatably connected to the first adjusting rod (7).

5. The guardrail for a grid floor according to claim 4, characterized in that, The first limiting mechanism (4) includes a first limiting block (11), a second limiting block (12), a first connecting rod (14), and a second connecting rod (13); one end of the first block and one end of the second limiting block (12) are both rotatably connected to the bottom of the first adjusting rod (7) through a rotating shaft; one end of the first connecting rod (14) is hinged to the bottom of the first adjusting rod (7), and the other end is hinged to one end of the first limiting block (11) close to the connecting seat; one end of the second connecting rod (13) is hinged to the bottom of the first adjusting rod (7), and the other end is hinged to one end of the second limiting block (12) close to the connecting seat; axially moving the second adjusting rod (8) relative to the first adjusting rod (7) can make the first limiting block (11) and the second limiting block (12) close or expand relative to each other.

6. The protective railing for a grid floor according to claim 5, characterized in that, The first limiting block (11) and the second limiting block (12) are both provided with receiving grooves. When the first limiting block (11) and the second limiting block (12) are closed relative to each other, the first connecting rod (14) and the second connecting rod (13) are respectively located in the two receiving grooves.

7. The guardrail for a grid floor according to claim 5, characterized in that, The first limiting block (11) is provided with a first connecting pair, and the second limiting block (12) is provided with a second connecting pair. The first connecting pair is perpendicularly arranged with respect to the first limiting block (11), and the second connecting pair is perpendicularly arranged with respect to the second limiting block (12). The first connecting pair and the second connecting pair are rotatably connected to the second adjusting rod (8) through a rotating shaft; when the first limiting block (11) and the second limiting block (12) are unfolded relative to each other, one end of the first limiting block (11) provided with the first connecting pair abuts against the second connecting pair.

8. The guardrail for a grid floor according to claim 5, characterized in that, The third limiting mechanism includes a limiting platform (9) and a limiting rod (10). One end of the limiting rod (10) is hinged to the limiting platform (9), and the other end can abut against the adjusting sleeve.

9. The guardrail for a grid floor according to any one of claims 2 to 8, characterized in that, The guardrail main body (1) includes at least two vertical rods (6) and at least two cross rods (15). Two ends of the two cross rods (15) are respectively connected to the two vertical rods (6). The two cross rods (15) are arranged in parallel and at intervals; the locking mechanism (3) is a limiting sleeve, and two ends of the limiting sleeve are respectively sleeved on the tops of two adjacent vertical rods (6).

10. The guardrail for a grid floor according to claim 9, characterized in that, The cross rod (15) includes a first cross rod (17) and a hollow second cross rod (16); one end of the first cross rod (17) is connected to one of the vertical rods (6), and the other end of the first cross rod (17) penetrates through the second cross rod (16); the other end of the second cross rod (16) is connected to the other vertical rod (6); a screw hole is provided on the first cross rod (17), and a set screw (18) is provided at the screw hole.

Images