Horizontal opening protection device and use method thereof

Abstract

The present invention provides a horizontal hole protection device, comprising a rectangular protective plate, a position limiting assembly, a height adjustment assembly, a clamping assembly, and a fence assembly; the position limiting assembly comprises a position limiting rod slidably connected to the protective plate; the height adjustment assembly comprises a height adjustment rod slidably connected to the position limiting rod; the clamping assembly comprises a clamping rod rotatably connected to the height adjustment rod; the fence assembly comprises four groups of guardrails, the four groups of guardrails being evenly distributed around the protective plate. The present invention also provides a method for using the device. The present invention solves the problem in the prior art that horizontal hole protection measures fail to achieve a high safety factor and the implementation process is cumbersome and inefficient.

Description

Technical Field

[0001] The present invention relates to the technical field of horizontal hole protection, and in particular to a horizontal hole protection device and a use method thereof. Background Art

[0002] In housing construction projects, workers usually reserve holes in the ground to facilitate the later installation and laying of pipes or other facilities. However, reserved holes pose a great safety hazard. Workers or construction tools may fall into the holes, causing injuries to workers or damage to tools, and may also hit workers below the holes. Therefore, it is necessary to protect the holes.

[0003] There is a set of safety protection standards for edge openings in the current construction industry. Different types and sizes of openings require different protection measures. The protection standards for horizontal openings are as follows:

[0004] 1. When the short side of a horizontal opening is less than 500mm, a cover plate should be made with a template. The overlap length between the cover plate and the outer edge of the opening should be no less than 100mm. Square wooden strips should be nailed around the cover plate to prevent displacement. The cover plate should be painted with 20cm of yellow and black paint.

[0005] 2. When the short side of a horizontal opening is greater than 500mm and less than 1500mm, a template should be used to make a cover for protection, and 1.2m steel pipe guardrails should be added on all sides. The spacing between the bottom, middle and top cross bars should be 60cm. The steel pipe guardrails should be painted yellow and black, and the spacing should be 40cm.

[0006] 3. If the opening is too large to be horizontally protected, it should be protected in accordance with the edge protection standards; anti-fall safety warning signs should be hung on the outside of the guardrail.

[0007] Generally, horizontal openings are circular or rectangular. The diameter of circular openings is generally between 500mm and 1000mm, and the short side length of rectangular openings is generally between 500mm and 1000mm. Therefore, workers usually use templates to make covers for protection and install 1.2m steel pipe guardrails around them for protection. This protection measure has the following defects:

[0008] 1. When using templates to make cover plates, workers need to cut the templates to the right size according to the size of the opening. After the cover plates are made, they need to nail square wooden strips around them and finally install steel pipe guardrails around the opening. During the installation or removal process, tools such as cutting knives, hammers, and electric screwdrivers are needed. The installation or removal process is cumbersome and time-consuming, which reduces construction efficiency.

[0009] 2. Square wooden strips are nailed around the cover plate to limit the cover plate. Iron nails are nailed into the floor through square wooden strips of a certain thickness. The friction between the iron nails and the floor prevents relative displacement, but the strength of the iron nails is low, and the iron nails and the floor may become loose. In addition, the square wooden strips can only limit the cover plate in the horizontal direction, and the cover plate may still move longitudinally and fall out of the hole. Therefore, the safety factor of relying solely on iron nails and square wooden strips to limit the cover plate is low. Summary of the Invention

[0010] In response to the deficiencies in the prior art, the present invention provides a horizontal opening protection device and a method for using the same, which solves the problems in the prior art that horizontal opening protection measures cannot achieve a high safety factor and the implementation process is cumbersome and inefficient.

[0011] In a first aspect, according to an embodiment of the present invention, the present invention provides a horizontal opening protection device, which includes a protection plate and further includes:

[0012] A limit assembly, the limit assembly comprising four sliding plates, the four sliding plates equidistantly surrounding the surface of the protective plate, the four sliding plates being slidably connected to the protective plate, and each sliding plate being fixed with a limit rod perpendicular to the surface of the protective plate;

[0013] A height adjustment component, the height adjustment component includes a height adjustment rod, each of the limit rods is slidably connected to a height adjustment rod, and the height adjustment rod is coaxial with the limit rod;

[0014] The clamping assembly includes a clamping rod, each of the height adjustment rods is rotatably connected to a clamping rod, the clamping rod is parallel to the plate surface of the protective plate, and the rotation axis of the clamping rod is perpendicular to the plate surface of the protective plate.

[0015] In a second aspect, according to an embodiment of the present invention, the present invention provides a method for using a horizontal opening protection device, comprising the following steps:

[0016] S1. First, place the protective plate on the hole and place the limit assembly inside the hole;

[0017] S2. Adjust the limit assembly so that the limit rod contacts the inner wall of the hole;

[0018] S3. Fully lower the height adjustment assembly and adjust the clamping assembly so that one end of the clamping rod rotates outside the boundary of the hole;

[0019] S4. Move the height adjustment assembly upward so that the clamping rod contacts the wall around the hole.

[0020] The technical principle of the present invention is as follows: a worker first places a protective plate above the hole and a limit assembly in the hole, so that the protective plate can block the hole; then the limit assembly is adjusted to make four sliding plates slide on the plate surface of the protective plate. The sliding of the four sliding plates drives the four limit rods to move until the four limit rods abut against the inner wall of the hole. At this time, the protective plate is not easily displaced in the horizontal direction;

[0021] Then completely lower the height adjustment assembly to reserve space for the clamping rod to rotate, then adjust the clamping assembly so that one end of the clamping rod rotates outside the boundary of the hole, and then move the height adjustment assembly upward so that the clamping rod abuts the wall around the hole. At this time, the protective plate is not prone to vertical displacement.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. By using a limit rod to contact the inner wall of the hole, the protective plate is not easily displaced in the horizontal direction, so that the protective plate can protect the hole more stably;

[0024] 2. The limit rods can slide along the surface of the protective plate to meet the purpose of protecting holes of different sizes. In addition, the four limit rods can slide at the same time, which improves the adjustment speed.

[0025] 3. By using the clamping rod to abut against the wall around the hole, the protective plate is not easily displaced in the vertical direction, so that the protective plate can protect the hole more stably;

[0026] 4. The height of the clamping rod can be adjusted by adjusting the height of the rod, so that the protective plate can protect holes of different depths. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Schematic diagram of the structure of a horizontal opening protection device according to an embodiment of the present invention.

[0028] Figure 2 Schematic diagram of the bottom surface of the protective plate according to an embodiment of the present invention.

[0029] Figure 3 Schematic diagram of the top surface of the protective plate according to an embodiment of the present invention.

[0030] Figure 4 Schematic diagram of a guardrail according to an embodiment of the present invention.

[0031] Figure 5 Schematic diagram of the side of the protective plate according to an embodiment of the present invention.

[0032] Figure 6 for Figure 5 Enlarged schematic diagram of part A in the middle.

[0033] In the above drawings: 1, protective plate; 11, through hole; 12, groove; 13, cover plate; 131, fifth locking member; 2, limit assembly; 21, sliding plate; 22, limit rod; 23, first rotating shaft; 24, first driving tooth; 25, handle; 251, first locking member; 26, first driven tooth; 27, spur gear; 3, height adjustment assembly; 31, height adjustment rod; 32, adjustment shaft; 321, second locking member; 33, first telescopic rod; 4, clamping assembly; 41, clamping rod; 4 2. Second rotating shaft; 421. Third locking member; 43. Second telescopic rod; 44. Second driving tooth; 45. Third transmission tooth; 46. Second driven tooth; 5. Fence assembly; 51. Guardrail; 511. Positioning hole; 52. Third telescopic rod; 521. Fourth locking member; 522. Connecting groove; 53. Connecting rod; 54. Positioning pin; 6. Linkage assembly; 61. First transmission shaft; 62. First transmission tooth; 63. Second transmission tooth; 64. Second transmission shaft; 7. Connecting plate. DETAILED DESCRIPTION

[0034] The technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0035] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a horizontal hole protection device, including a protective plate 1, and also includes: a limiting component 2, the limiting component 2 includes four sliding plates 21, the four sliding plates 21 are equidistantly surrounded on the surface of the protective plate 1, the four sliding plates 21 are respectively slidably connected to the protective plate 1, and each sliding plate 21 is fixed with a limiting rod 22 perpendicular to the surface of the protective plate 1; it also includes a height adjustment component 3, the height adjustment component 3 includes a height adjustment rod 31, each limiting rod 22 is slidably connected to a height adjustment rod 31, and the height adjustment rod 31 is coaxial with the limiting rod 22; it also includes a clamping component 4, the clamping component 4 includes a clamping rod 41, each height adjustment rod 31 is rotatably connected to a clamping rod 41, the clamping rod 41 is parallel to the surface of the protective plate 1, and the rotation axis of the clamping rod 41 is perpendicular to the surface of the protective plate 1.

[0036] Specifically, the protective plate 1 is an alloy plate with a certain strength but a relatively light weight. The material thereof may be, but is not limited to, aluminum alloy. Aluminum alloy has high strength and low density, which makes it easier for workers to carry and install the protective plate 1. The shape of the protective plate 1 can be set according to actual needs. The protective plate 1 in this embodiment is a rectangular plate, and a support column for supporting the protective plate 1 is fixed on the protective plate 1.

[0037] Four limiting plates are fixed to the protective plate 1. The four limiting plates are evenly distributed around the center of the protective plate 1. A chute is formed between any two adjacent limiting plates. The sliding plate 21 slides in the chute. The four sliding plates 21 are at the same distance from the center of the protective plate 1. The surface of the sliding plate 21 fits in contact with the surface of the protective plate 1. The sliding plate 21 can move along the diagonal line of the protective plate 1 toward or away from the center of the protective plate 1.

[0038] There are blocking blocks fixed at the four corners of the protective plate 1. The blocking blocks can block the sliding plate 21, so that the sliding block 21 is not easily slipped out of the protective plate 1. The limiting rod 22 is welded on the sliding block 21. The limiting rod 22 is cylindrical. The limiting rod 22 is sleeved on the height adjustment rod 31. The limiting rod 22 and the height adjustment rod 31 can slide coaxially relative to each other.

[0039] In the embodiment of the present invention, the worker first places the protective plate 1 on the hole and places the limiting assembly 2 in the hole, so that the protective plate 1 completely blocks the hole and the center of the protective plate 1 is approximately located in the center of the hole. Then, the limiting assembly 2 is adjusted to make the four sliding plates 21 move simultaneously along the diagonal of the protective plate 1. The movement of the sliding plates 21 drives the limiting rod 22 to move until the limiting rod 22 abuts against the inner wall of the hole. The inner wall of the hole blocks the limiting rod 22, making it unable to move further. Therefore, the protective plate 1 is not easily displaced in the horizontal direction, so that the protective plate 1 blocks the hole more stably. The horizontally movable limiting rod 22 enables the protective plate 1 to protect holes of different sizes.

[0040] The worker then adjusts the height-adjusting assembly 3 to make the height-adjusting rod 31 move downward in the vertical direction, and the height-adjusting rod 31 drives the clamping rod 41 to move until the clamping rod 41 can no longer move downward, and then adjusts the clamping assembly 4 to rotate the clamping rod 41 until one end of the clamping rod 41 rotates outside the boundary of the hole, and then adjusts the height-adjusting assembly 3 to make the height-adjusting rod 31 move upward, and the height-adjusting rod 31 drives the clamping rod 41 to move until the clamping rod 41 abuts against the wall around the hole. The wall around the hole blocks the clamping rod 41, preventing the clamping rod 41 from continuing to move upward, so that the protective plate 1 is not easy to move in the vertical direction, so that the protective plate 1 can more stably block the hole, and the vertically movable clamping rod 41 enables the protective plate 1 to protect holes of different depths.

[0041] like Figure 2 and Figure 3As shown, the limiting assembly 2 also includes a first rotating shaft 23 rotatably connected to the protective plate 1, the first rotating shaft 23 is perpendicular to the plate surface of the protective plate 1 and passes through the protective plate 1; one end of the first rotating shaft 23 is connected to a first driving tooth 24, and the other end is connected to a handle 25, and the handle 25 is provided with a first locking member 251; a first driven tooth 26 is provided on the protective plate 1, and a spur gear 27 is coaxially fixed to the first driven tooth 26, and the first driven tooth 26 is meshed with the first driving tooth 24, and a rack is provided on the sliding plate 21, and the spur gear 27 is meshed with the rack on the sliding plate 21.

[0042] Specifically, the protective plate 1 is provided with a mounting hole passing through the two plate surfaces, the first rotating shaft 23 is installed in the mounting hole through a bearing, and the first driving tooth 24 is a bevel gear; the first locking member 251 can be selected but not limited to a bolt, and the handle 25 is provided with a threaded hole; a mounting plate is fixed to the protective plate 1, and a hole passing through the two plate surfaces is provided on the mounting plate. The first driven tooth 26 is connected to the spur gear 27 by a shaft, and the shaft is installed in the hole through a bearing, and the first driven tooth 26 is a bevel gear.

[0043] In the embodiment of the present invention, a worker rotates the handle 25, and the handle 25 drives the first rotating shaft 23 to rotate, thereby rotating the first driving tooth 24, and the first driven tooth 26 engaged with the first driving tooth 24 rotates. The first driven tooth 26 drives the spur gear 27 to rotate, and the rotation of the spur gear 27 moves the sliding plate 21, thereby adjusting the position of the limit rod 22, and the first locking member 251 can prevent the handle 25 from rotating, thereby positioning the limit rod 22.

[0044] like Figure 2 and Figure 3 As shown, a horizontal hole protection device provided according to an embodiment of the present invention also includes a linkage assembly 6, which includes a first transmission shaft 61 rotatably set on the protective plate 1, and first transmission teeth 62 are fixed at both ends of the first transmission shaft 61. A second transmission tooth 63 is rotatably connected to the protective plate 1, and the two first transmission teeth 62 are respectively engaged with the second transmission teeth 63 and the first driving teeth 24; first driven teeth 26 and spur gears 27 are provided on both sides of each sliding plate 21, each spur gear 27 is engaged with the rack on the sliding plate 21, and the second transmission teeth 63 are engaged with the first driven teeth 26.

[0045] Specifically, a mounting plate is fixed on the protective plate 1, and a hole is opened on the mounting plate that passes through the two plate surfaces. The first transmission shaft 61 is installed in the hole through a bearing. It should be noted that the position of the second transmission tooth 63 can be set according to actual needs, but the length of the sliding plate 21 is limited, so the position of the second transmission tooth 63 should be reasonably set. In this embodiment, the first transmission shaft 61 is parallel to one side of the protective plate 1.

[0046] In the embodiment of the present invention, when the first driving tooth 24 rotates, the first driving tooth 24 drives the first transmission tooth 62 at one end of the first transmission shaft 61 to rotate, thereby rotating the first transmission shaft 61. The first transmission tooth 62 at the other end of the first transmission shaft 61 rotates, driving the second transmission tooth 63 to rotate. The second transmission tooth 63 drives the first driven tooth 26 meshing therewith to rotate. The first driven tooth 26 drives the spur gear 27 to rotate, thereby moving the sliding plate 21. In this way, when the worker turns the handle 25, the two sliding plates 21 move simultaneously.

[0047] The working principle of the gear is that when two gears are meshed, when one gear rotates, the other gear rotates in the opposite direction; when two gears are fixed on the same axis, when one gear rotates, the other gear rotates in the opposite direction. Figure 2 When the first driving tooth 24 rotates counterclockwise, the first driven tooth 26 meshing with the first driving tooth 24 rotates clockwise, and the spur gear 27 coaxially fixed with the first driven tooth 26 rotates counterclockwise, causing the sliding plate 21 to move closer to the center of the protective plate 1. When the first driving tooth 24 rotates counterclockwise, the first transmission tooth 62 meshing with the first driving tooth 24 rotates clockwise, the other first transmission tooth 62 on the first transmission shaft 61 rotates counterclockwise, the second transmission tooth 63 meshing with the first transmission tooth 62 rotates clockwise, the first driven tooth 26 meshing with the second transmission tooth 63 rotates counterclockwise, and the spur gear 27 coaxially fixed with the first driven tooth 26 rotates clockwise, causing the sliding plate 21 to move closer to the center of the protective plate 1, thereby causing the two adjacent sliding plates 21 to simultaneously approach the center of the protective plate 1.

[0048] like Figure 2 As shown, the linkage assembly 6 also includes three second transmission shafts 64, and the three second transmission shafts 64 are correspondingly distributed between the adjacent sliding plates 21. The first transmission teeth 62 are fixed at both ends of the three second transmission shafts 64; three pairs of second transmission teeth 63 are also provided, and the first transmission teeth 62 at both ends of the three second transmission shafts 64 are engaged with the second transmission teeth 63, and each second transmission tooth 63 is engaged with the first driven tooth 26.

[0049] Specifically, when the first rotating shaft 23 rotates, the sliding plate 21 moves, and the two adjacent sliding plates 21 move simultaneously through the first transmission shaft 61. When the sliding plate 21 moves, the spur gear 27 meshing with the rack on the sliding plate 21 rotates, and the first driven tooth 26 coaxially fixed with the spur gear 27 rotates, driving the second transmission tooth 63 to rotate. The second transmission tooth 63 drives the first transmission tooth 62 at one end of the second transmission shaft 64 to rotate, thereby rotating the second transmission shaft 64.

[0050] The second transmission shaft 64 drives the first transmission tooth 62 at the other end to rotate, the first transmission tooth 62 drives the second transmission tooth 63 to rotate, and the second transmission tooth 63 drives the first driven tooth 26 to rotate, so that the spur gear 27 rotates and drives the sliding plate 21 to move, thereby achieving the purpose of the four sliding plates 21 approaching the center of the protective plate 1 or moving away from the center of the protective plate 1 at the same time.

[0051] It should be noted that there is force transmission between any two adjacent sliding plates 21, and the linkage assembly 6 and the partial structure of the limit assembly 2 cooperate with each other to form a circular closed route. When the worker turns the handle 25, the force input by the worker will be transmitted along this circular closed route. The force transmission is connected end to end, so the input force will not cause a large loss, so that the limit rod 22 can be easily adjusted.

[0052] like Figure 2 and Figure 3 As shown, the height adjustment component 3 also includes an adjusting shaft 32 that is slidably connected to the protective plate 1. The adjusting shaft 32 is perpendicular to the plate surface of the protective plate 1 and passes through the protective plate 1. Four first telescopic rods 33 are fixed to the side wall of the adjusting shaft 32, and the end of each first telescopic rod 33 is fixed to the height adjustment rod 31; a second locking piece 321 is fixed on the protective plate 1, and the second locking piece 321 is sleeved on the adjusting shaft 32.

[0053] Specifically, a mounting hole is provided in the center of the protective plate 1, extending through both surfaces. An adjustment shaft 32 is slidably disposed within the mounting hole. The first telescopic rod 33 is a multi-section telescopic rod, or in this embodiment, a three-section telescopic rod. When a worker moves the adjustment shaft 32, it drives the four first telescopic rods 33, which in turn drive the adjustment rod 31, thereby adjusting the vertical position of the clamping rod 41. This allows the protective plate 1 to protect openings of varying depths. The multi-section telescopic rod increases the range of movement of the limiting rod 22, allowing the protective plate 1 to protect openings of a wider range of sizes.

[0054] like Figure 2 and Figure 3 As shown, the clamping assembly 4 also includes a second rotating shaft 42 and four second telescopic rods 43. The second rotating shaft 42 is rotatably connected to the adjusting shaft 32 and passes through the adjusting shaft 32. A second driving tooth 44 is fixed to one end of the second rotating shaft 42; third transmission teeth 45 are fixed to both ends of the second telescopic rod 43, and a second driven tooth 46 is fixed to the clamping rod 41. The two third transmission teeth 45 are respectively engaged with the second driving tooth 44 and the second driven tooth 46; a connecting plate 7 is provided between the first telescopic rod 33 and the second telescopic rod 43; and a third locking member 421 is provided on the second rotating shaft 42.

[0055] Specifically, the adjustment shaft 32 is provided with mounting holes extending through both ends thereof. The second rotating shaft 42 is mounted within these mounting holes via bearings. The connecting plate 7 is fixed to the first telescopic rod 33 but connected to the second telescopic rod 43 via bearings. When the first telescopic rod 33 is extended or retracted, the connecting plate 7 drives the second telescopic rod 43 to extend or retract synchronously. Therefore, the third drive tooth 45 at one end of the second telescopic rod 43 is always engaged with the second driven tooth 46. When a worker rotates the second rotating shaft 42, the second driving tooth 44 rotates, driving the third drive tooth 45 to rotate. The third drive tooth 45 then drives the second telescopic rod 43 to rotate, thereby rotating the second driven tooth 46 engaged with the third drive tooth 45, thereby rotating the clamping rod 41.

[0056] like Figure 4 and Figure 5 As shown, a horizontal hole protection device provided according to an embodiment of the present invention also includes a fence assembly 5, which includes four groups of guardrails 51 evenly distributed around the protective plate 1. The fence assembly 5 also includes a third telescopic rod 52, which is a two-section telescopic rod and a fourth locking member 521 is provided at the node. Guardrails 51 are fixed at the node and the end of the third telescopic rod 52; positioning holes 511 are opened on the guardrails 51, and positioning pins 54 are inserted into the positioning holes 511 on two adjacent guardrails 51.

[0057] Specifically, the number of the third telescopic rods 52 can be set according to actual needs. In this embodiment, two third telescopic rods 52 are provided on each side of the protective plate 1, and the first and second sections of the third telescopic rods 52 are welded with guardrails 51.

[0058] In the embodiment of the present invention, after the worker adjusts the length of the third telescopic rod 52, he locks the fourth locking piece 521. The positioning pin 54 cooperates with the positioning hole 511 to fix the adjacent guardrail 51, so that the guardrail 51 is not easy to collapse. The guardrail 51 can play a blocking and warning role, making it difficult for workers to walk on the guard plate 1, further improving the protective effect of the horizontal hole protection device.

[0059] like Figure 5 and Figure 6 As shown, the side wall of the protective plate 1 is provided with a through hole 11 for accommodating the third telescopic rod 52 and a groove 12 for accommodating the guardrail 51; a connecting rod 53 is slidably arranged in the through hole 11, one end of the connecting rod 53 is limited in the through hole 11, and the other end is spherical, and a connecting groove 522 is provided at the end of the third telescopic rod 52 close to the connecting rod 53, the connecting rod 53 is located in the connecting groove 522 and the diameter of the spherical end of the connecting rod 53 is greater than the width of the connecting groove 522.

[0060] Specifically, the depth of the through hole 11 is the same as the length of a single section of the third telescopic rod 52. A limiting ring is fixed in the through hole 11, and the diameter of the non-spherical end of the connecting rod 53 is larger than the inner diameter of the limiting ring; a slot is provided on the protective plate 1, and the width of the slot is larger than the cross-sectional diameter of the third telescopic rod 52.

[0061] In an embodiment of the present invention, the third telescopic rod 52 is accommodated in the through hole 11, and the guardrail 51 is accommodated in the groove 12. When the worker pulls the guardrail 51, the third telescopic rod 52 extends under the action of the pulling force, and continues to pull the guardrail 51. The third telescopic rod 52 gradually slides out of the through hole 11, and the third telescopic rod 52 drives the connecting rod 53 to slide until the connecting rod 53 can no longer slide. At this time, the third telescopic rod 52 can rotate. When the third telescopic rod 52 rotates, the spherical end of the connecting rod 53 is always located in the connecting groove 522, so the third telescopic rod 52 will not detach from the protective plate 1.

[0062] like Figure 1 and Figure 5 As shown, the side wall of the protective plate 1 is rotatably connected to the cover plate 13, and a fifth locking member 131 is provided between the cover plate 13 and the protective plate 1. The cover plate 13 is used to limit the guardrail 51 so that the guardrail 51 is not easy to slide out of the groove 12.

[0063] An embodiment of the present invention further provides a method for using a horizontal opening protection device, comprising the following steps:

[0064] S1. First, place the protective plate 1 on the hole and place the limit assembly 2 inside the hole;

[0065] S2. Adjust the limit assembly 3 so that the limit rod 22 abuts against the inner wall of the hole;

[0066] S3, completely lower the height adjustment component 3, and adjust the clamping component 4 so that one end of the clamping rod 41 is rotated outside the boundary of the hole;

[0067] S4, move the height adjustment assembly 3 upward so that the clamping rod 41 contacts the wall surface around the hole;

[0068] Among them, the limiting rod 22 is blocked by the inner wall of the hole and cannot move further, so the protective plate 1 is not easy to move in the horizontal direction, and the clamping rod 41 is blocked by the wall around the hole and cannot move further, so the protective plate 1 is not easy to move in the vertical direction, thereby ensuring that the protective plate 1 can stably block the hole.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A horizontal opening protection device, characterized in that: The invention comprises a protective plate (1), and further comprises: A limiting assembly (2), the limiting assembly (2) comprising four sliding plates (21), the four sliding plates (21) being equidistantly arranged around the surface of the protective plate (1), the four sliding plates (21) being respectively slidably connected to the protective plate (1), and a limiting rod (22) being fixed to each sliding plate (21) and being perpendicular to the surface of the protective plate (1); A height adjustment component (3), the height adjustment component (3) comprising a height adjustment rod (31), each of the limit rods (22) being slidably connected to a height adjustment rod (31), the height adjustment rod (31) being coaxial with the limit rod (22); A clamping assembly (4), the clamping assembly (4) comprising a clamping rod (41), each height-adjusting rod (31) being rotatably connected to a clamping rod (41), the clamping rod (41) being parallel to the plate surface of the protective plate (1), and the rotation axis of the clamping rod (41) being perpendicular to the plate surface of the protective plate (1); The limiting assembly (2) further comprises a first rotating shaft (23) rotatably connected to the protective plate (1), the first rotating shaft (23) being perpendicular to the plate surface of the protective plate (1) and passing through the protective plate (1); one end of the first rotating shaft (23) is connected to a first driving tooth (24), and the other end is connected to a handle (25), and a first locking member (251) is provided on the handle (25); a first driven tooth (26) is provided on the protective plate (1), a spur gear (27) is coaxially fixed to the first driven tooth (26), the first driven tooth (26) is meshed with the first driving tooth (24), a rack is provided on the sliding plate (21), and the spur gear (27) is meshed with the rack on the sliding plate (21); The invention also includes a linkage assembly (6), wherein the linkage assembly (6) includes a first transmission shaft (61) rotatably arranged on the protective plate (1), first transmission teeth (62) are fixed at both ends of the first transmission shaft (61), and second transmission teeth (63) are rotatably connected to the protective plate (1), and two first transmission teeth (62) are respectively engaged with the second transmission teeth (63) and the first driving teeth (24); the first driven teeth (26) and the spur gears (27) are provided on both sides of each sliding plate (21), each spur gear (27) is engaged with the rack on the sliding plate (21), and the second transmission teeth (63) are engaged with the first driven teeth (26).

2. A horizontal opening protection device according to claim 1, characterized in that: The linkage assembly (6) further comprises three second transmission shafts (64), the three second transmission shafts (64) being correspondingly distributed between two adjacent sliding plates (21), and the first transmission teeth (62) being fixed at both ends of the three second transmission shafts (64); three pairs of second transmission teeth (63) are further provided, the first transmission teeth (62) at both ends of the three second transmission shafts (64) are meshed with the second transmission teeth (63), and each second transmission tooth (63) is meshed with the first driven tooth (26).

3. The horizontal opening protection device according to claim 1, characterized in that: The height adjustment component (3) further comprises an adjustment shaft (32) slidably connected to the protective plate (1), the adjustment shaft (32) being perpendicular to the plate surface of the protective plate (1) and passing through the protective plate (1), four first telescopic rods (33) being fixed to the side wall of the adjustment shaft (32), the end of each first telescopic rod (33) being fixed to the height adjustment rod (31); a second locking member (321) being fixed to the protective plate (1), the second locking member (321) being sleeved on the adjustment shaft (32).

4. A horizontal opening protection device according to claim 3, characterized in that: The clamping assembly (4) further comprises a second rotating shaft (42) and four second telescopic rods (43); the second rotating shaft (42) is rotatably connected to the adjusting shaft (32) and passes through the adjusting shaft (32); a second driving tooth (44) is fixed to one end of the second rotating shaft (42); third transmission teeth (45) are fixed to both ends of the second telescopic rod (43); a second driven tooth (46) is fixed to the clamping rod (41); two third transmission teeth (45) are respectively engaged with the second driving tooth (44) and the second driven tooth (46); a connecting plate (7) is provided between the first telescopic rod (33) and the second telescopic rod (43); and a third locking member (421) is provided on the second rotating shaft (42).

5. The horizontal opening protection device according to claim 1, characterized in that: The invention also includes a fence assembly (5), wherein the fence assembly (5) includes four groups of guardrails (51) evenly distributed around the guard plate (1); the fence assembly (5) also includes a third telescopic rod (52); the third telescopic rod (52) is a two-section telescopic rod and a fourth locking member (521) is provided at a node; the guardrails (51) are fixed at the node and the end of the third telescopic rod (52); positioning holes (511) are provided on the guardrails (51), and positioning pins (54) are inserted into the positioning holes (511) on two adjacent guardrails (51).

6. A horizontal opening protection device according to claim 5, characterized in that: The side wall of the protective plate (1) is provided with a through hole (11) for accommodating the third telescopic rod (52) and a groove (12) for accommodating the guardrail (51); a connecting rod (53) is slidably arranged in the through hole (11), one end of the connecting rod (53) is limited in the through hole (11), and the other end is spherical; a connecting groove (522) is provided at one end of the third telescopic rod (52) close to the connecting rod (53); the connecting rod (53) is located in the connecting groove (522), and the diameter of the spherical end of the connecting rod (53) is greater than the width of the connecting groove (522).

7. A horizontal opening protection device according to claim 6, characterized in that: The side wall of the protective plate (1) is rotatably connected to a cover plate (13), and a fifth locking member (131) is provided between the cover plate (13) and the protective plate (1).

8. A method for using the horizontal opening protection device according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1. First, place the protective plate (1) on the hole and place the limit assembly (2) inside the hole; S2, adjusting the limit assembly (2) so that the limit rod (22) abuts against the inner wall of the hole; S3, completely lower the height adjustment assembly (3), and adjust the clamping assembly (4) so ​​that one end of the clamping rod (41) rotates outside the boundary of the hole; S4, move the height adjustment assembly (3) upwards so that the clamping rod (41) contacts the wall surface around the hole.

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