CN116641569A - Horizontal tunnel portal protection device and use method thereof - Google Patents

Abstract

The invention provides a horizontal tunnel portal protection device which comprises a rectangular protection plate, a limiting assembly, a height adjusting assembly, a clamping assembly and a fence assembly, wherein the rectangular protection plate is arranged on the side of the limiting assembly; the limiting assembly comprises a limiting rod which is in sliding connection with the protection plate; the height adjusting component comprises a height adjusting rod, and the limiting rod is connected with the height adjusting rod in a sliding manner; the clamping assembly comprises a clamping rod, and the height adjusting rod is rotationally connected with the clamping rod; the fence component comprises four groups of protective fences, and the four groups of protective fences are uniformly distributed around the protective plate. The invention also provides a using method of the device. The invention solves the problems that the horizontal tunnel entrance protective measures in the prior art cannot achieve higher safety coefficient, the implementation process is complex and the efficiency is low.

Description

Horizontal opening guard and method of use

technical field

The invention relates to the technical field of horizontal hole protection, in particular to a horizontal hole protection device and a use method thereof.

Background technique

In housing construction projects, workers usually reserve holes on the ground to facilitate the installation and laying of pipelines or other facilities in the later stage, but the reserved holes have great safety hazards, and workers or construction tools may fall into the holes. As a result, workers are injured or tools are damaged, and workers under the hole may be hit, so it is necessary to protect the hole.

In the current construction field, there is a set of safety protection standards for edge openings. Different types or sizes of openings require different protection measures. Among them, the protection standards for horizontal openings are as follows:

1. When the short side size of the horizontal opening is less than 500mm, templates should be used to make the cover plate for protection. The overlapping length of the cover plate and the outer edge of the hole should not be less than 100mm. Square wooden strips should be nailed around the cover plate to prevent the cover plate from shifting. 20cm yellow and black paint;

2. When the short side size of the horizontal opening is greater than 500mm and less than 1500mm, templates should be used to make cover plates for protection, and 1.2m steel pipe protective railings should be added around, and the distance between the bottom, middle and top crossbars should be 60cm, and the steel pipe protective railings should be painted yellow Black paint, 40cm apart;

3. If the size of the hole is too large for horizontal protection, protection shall be carried out in accordance with the border protection standards; safety warning signs for anti-falling shall be hung on the outside of the guardrail.

The general horizontal hole is a circular hole or a rectangular hole. The diameter of a circular hole is generally 500mm to 1000mm, and the short side length of a rectangular hole is generally 500mm to 1000mm. Therefore, workers usually use templates to make cover plates for protection, and add Install 1.2m steel pipe guardrail for protection, this protective measure has the following defects:

1. The template is used to make the cover plate. Workers need to cut the appropriate size template according to the size of the hole. After the cover plate is made, square wooden strips need to be nailed around the cover plate, and finally steel pipe guardrails are installed around the hole. The installation or disassembly process Tools such as cutting knives, hammers and electric screwdrivers are needed in the process, the installation or disassembly process is cumbersome, and the whole process takes a lot of time, which reduces the construction efficiency;

2. There are square wooden strips nailed around the cover to limit the position of the cover. The iron nails pass through the square wooden strips with a certain thickness and are nailed into the floor. The friction between the iron nails and the floor prevents relative displacement, but The strength of the iron nails is low, and the nails and the floor may be loose. In addition, the square wooden strips can only be used to limit the horizontal direction of the cover plate, and the cover plate may still move longitudinally and leave the hole. Therefore, only Relying on iron nails and square wooden strips to limit the cover plate has a low safety factor.

Contents of the invention

Aiming at the deficiencies in the prior art, the present invention provides a horizontal hole protection device and its use method, which solves the problem that the horizontal hole protection measures in the prior art cannot achieve a high safety factor, and the implementation process is cumbersome, The problem of inefficiency.

In the first aspect, according to an embodiment of the present invention, the present invention provides a protective device for a horizontal hole, which includes a protective plate, and further includes:

The limiting assembly, the limiting assembly includes four sliding plates, the four sliding plates are equally spaced around the surface of the protective plate, the four sliding plates are respectively slidably connected with the protective plate, each A limit rod perpendicular to the surface of the protective plate is fixed on the sliding plate of the block;

A height adjustment assembly, the height adjustment assembly includes a height adjustment rod, each of the limit rods is slidably connected to one of the height adjustment rods, and the height adjustment rod is coaxial with the limit rod;

A clamping assembly, 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 surface of the protective plate, the The axis of rotation of the clamping lever is perpendicular to the surface of the protective plate.

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

S1. First place the protective plate on the hole and place the limit component in the hole;

S2. Adjust the limit assembly so that the limit rod abuts against the inner wall of the hole;

S3. Fully lower the height adjustment assembly, and adjust the clamping assembly so that one end of the clamping rod is rotated beyond the boundary of the hole;

S4. Move up the height adjustment assembly, so that the clamping rod abuts against the wall around the hole.

The technical principle of the present invention is: workers first place the protective plate on the hole, and place the limit assembly in the hole, the protective plate can block the hole; then adjust the limit assembly, so that the four sliding plates The plate surface slides, and the four sliding plates slide to drive 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 easy to be displaced in the horizontal direction;

Then fully lower the height adjustment assembly to reserve a room for the clamping rod to rotate, then adjust the clamping assembly so that one end of the clamping rod rotates beyond the boundary of the hole, and then move up the height adjustment assembly so that the clamping rod is in contact with the hole The surrounding walls are in contact with each other, and the protective plate is not easy to be displaced in the vertical direction at this time.

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

1. By using the limit rod to abut against the inner wall of the hole, the protective plate is not easy to shift in the horizontal direction, so that the protective plate can protect the hole more stably;

2. The limit rod can slide along the surface of the protective plate, so as to meet the purpose of the protective plate to protect holes of different sizes, and the four limit rods can slide at the same time, which improves the adjustment speed;

3. By using the clamping rod to contact the wall around the hole, the vertical displacement of the protective plate is not easy to occur, so that the protective plate can protect the hole more stably;

4. The height position of the clamping rod can be adjusted through the height adjustment rod, so as to meet the purpose of the protective plate to protect holes of different depths.

Description of drawings

Fig. 1 is a schematic structural view of a horizontal hole protection device according to an embodiment of the present invention.

Fig. 2 is a schematic bottom view of the protective plate of the embodiment of the present invention.

Fig. 3 is a schematic diagram of the top surface of the protective plate according to the embodiment of the present invention.

Fig. 4 is a schematic diagram of a guardrail according to an embodiment of the present invention.

Fig. 5 is a schematic view of the side of the protective plate according to the embodiment of the present invention.

FIG. 6 is an enlarged schematic view of part A in FIG. 5 .

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. The first rotating shaft; 24. The first driving tooth; 25. The handle; 251. The first locking member; 26. The first driven tooth; 27. The spur gear; 3. The height adjustment component; 31. The height adjustment rod ; 32, adjusting shaft; 321, the second locking member; 33, the first telescopic rod; 4, clamping assembly; 41, clamping rod; 42, the second rotating shaft; 421, the third locking member; 43, The second telescopic rod; 44, the second driving tooth; 45, the third transmission tooth; 46, the second driven tooth; 5, the fence assembly; 51, the guardrail; 511, the positioning hole; 52, the third telescopic rod; , the fourth locking member; 522, the connecting groove; 53, the connecting rod; 54, the positioning pin; 6, the linkage assembly; 61, the first transmission shaft; 62, the first transmission tooth; 63, the second transmission tooth; 64, The second transmission shaft; 7, the connecting plate.

Detailed ways

The technical solutions in the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

As shown in Figures 1 and 2, the embodiment of the present invention provides a protective device for horizontal openings, including a protective plate 1, and also includes: a limit assembly 2, the limit assembly 2 includes four sliding plates 21, and the four sliding plates 21 is equally spaced around the surface of the protective plate 1, and the four sliding plates 21 are respectively slidably connected with the protective plate 1, and each sliding plate 21 is fixed with a limit rod 22 perpendicular to the surface of the protective plate 1; Including the height adjustment assembly 3, the height adjustment assembly 3 includes a height adjustment rod 31, and a height adjustment rod 31 is slidably connected to each limit rod 22, and the height adjustment rod 31 is coaxial with the limit rod 22; it also includes a clamping component 4. The clamping assembly 4 includes a clamping rod 41, and each height adjustment rod 31 is connected with a clamping rod 41 for rotation. The clamping rod 41 is parallel to the surface of the protective plate 1, and the rotation axis of the clamping rod 41 is vertical on the surface of the protective plate 1.

Specifically, the protective plate 1 is an alloy plate with a certain strength but light weight. Its material can be selected from but not limited to aluminum alloy. The shape of the plate 1 can be set according to actual needs. The protective plate 1 in this embodiment is a rectangular plate, and the protective plate 1 is fixed with a support column for supporting the protective plate 1;

Four limiting plates are fixed on the protective plate 1, and the four limiting plates are evenly distributed around the center of the protective plate 1. A chute is formed between two adjacent limiting plates, and the sliding plate 21 slides in the chute. The distances from the four sliding plates 21 to the center of the protective plate 1 are the same, and the surface of the sliding plate 21 is attached to the surface of the protective plate 1. The sliding plate 21 can be close to the center of the protective plate 1 or away from the center of the protective plate 1 along the diagonal line of the protective plate 1. Movement of the center of the fender 1;

The four corners of the protective plate 1 are fixed with blocking blocks, which can block the sliding plate 21, so that the sliding block 21 is not easy to slide out from the protective plate 1, and the limit rod 22 is welded on the sliding block 21. 22 is cylindrical, and the stop rod 22 is sleeved on the height adjustment rod 31, and the stop rod 22 and the height adjustment rod 31 can relatively slide coaxially.

In the embodiment of the present invention, the worker first places the protective plate 1 on the hole and places the limit assembly 2 in the hole, so that the protective plate 1 completely blocks the hole, and the center of the protective plate 1 is roughly located at the center of the hole. Center, and then adjust the limit assembly 2 so that the four sliding plates 21 move along the diagonal of the protective plate 1 at the same time, the movement of the sliding plate 21 drives the limit rod 22 to move until the limit rod 22 abuts against the inner wall of the hole, and the hole The inner wall of the inner wall blocks the limit rod 22, so that the limit rod 22 cannot continue to move, so that the protective plate 1 is not easy to be displaced in the horizontal direction, so that the protective plate 1 can more stably block the hole and can move horizontally. The rod 22 enables the protective plate 1 to protect holes of different sizes;

Then the worker adjusts the height-adjusting assembly 3 to make the height-adjusting rod 31 move downwards in the vertical direction, and the height-adjusting rod 31 drives the clamping rod 41 to move until the clamping rod 41 cannot continue to move downwards, and then adjusts the clamping assembly 4, Rotate the clamping rod 41 until one end of the clamping rod 41 is rotated beyond the boundary of the hole, then adjust the height-adjusting assembly 3 to move the height-adjusting rod 31 upwards, and the height-adjusting rod 31 drives the clamping rod 41 to move until the clamping rod 41 is locked. The tightening rod 41 abuts against the wall surface around the hole, and the wall surface around the hole blocks the clamping rod 41, so that the clamping rod 41 cannot continue to move upwards, so the protective plate 1 is difficult to move vertically, so that the protective plate 1 The hole is blocked more stably, and the vertically movable clamping rod 41 enables the protective plate 1 to protect holes of different depths.

As shown in Figures 2 and 3, the limit assembly 2 also includes a first rotating shaft 23 that is rotatably connected to the protective plate 1, and the first rotating shaft 23 is perpendicular to the surface of the protective plate 1 and penetrates the protective plate 1; the first rotation One end of the shaft 23 is connected with the first driving tooth 24, the other end is connected with the handle 25, the handle 25 is provided with the first locking member 251; the protective plate 1 is provided with the first driven tooth 26, the first driven tooth 26 A spur gear 27 is coaxially fixed, the first driven gear 26 meshes with the first driving gear 24 , the sliding plate 21 is provided with a rack, and the spur gear 27 meshes with the rack on the sliding plate 21 .

Specifically, the protective plate 1 is provided with a mounting hole 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 is optional but not Limited to bolts, threaded holes are provided on the handle 25; a mounting plate is fixed on the protective plate 1, and a hole penetrating through the two plate surfaces is opened on the mounting plate, and the first driven tooth 26 and the spur gear 27 are connected by a shaft, and the shaft passes through The bearing is installed in the hole, and the first driven tooth 26 is a bevel gear.

In the embodiment of the present invention, the worker rotates the handle 25, and the handle 25 drives the first rotating shaft 23 to rotate, so that the first driving tooth 24 rotates, and the first driven tooth 26 meshing with the first driving tooth 24 rotates. The driven tooth 26 drives the spur gear 27 to rotate, and the spur gear 27 rotates to make the sliding plate 21 move, thereby adjusting the position of the limit rod 22, and the first locking member 251 can make the handle 25 unable to rotate, thereby adjusting the limit rod. 22 for positioning.

As shown in Fig. 2 and Fig. 3, a horizontal hole protection device provided according to an embodiment of the present invention also includes a linkage assembly 6, and the linkage assembly 6 includes a first transmission shaft 61 rotatably arranged on the protection plate 1, the first transmission Both ends of the shaft 61 are fixed with a first transmission tooth 62, and the protective plate 1 is rotatably connected with a second transmission tooth 63, and the two first transmission teeth 62 mesh with the second transmission tooth 63 and the first driving tooth 24 respectively; Both sides of block sliding plate 21 are all provided with the first driven gear 26 and spur gear 27, and each spur gear 27 all meshes with the rack on the sliding plate 21, and the second drive tooth 63 meshes with the first driven tooth 26 .

Specifically, the protective plate 1 is fixed with a mounting plate, and the mounting plate is provided with a hole penetrating the two plate surfaces, and 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 determined according to It needs to be set actually, but the length of the sliding plate 21 is limited, so the position of the second transmission tooth 63 should be set reasonably. In this embodiment, the first transmission shaft 61 is parallel to one side of the protective plate 1 .

In the embodiment of the present invention, when the first driving gear 24 rotates, the first driving gear 24 drives the first transmission gear 62 at one end of the first transmission shaft 61 to rotate, so that the first transmission shaft 61 rotates, and the first transmission shaft 61 The first transmission tooth 62 at the other end rotates, driving the second transmission tooth 63 to rotate, and the second transmission tooth 63 drives the first driven tooth 26 meshed with it to rotate, and the first driven tooth 26 drives the spur gear 27 to rotate, thereby Make the sliding plates 21 move, so that when the worker turns the handle 25, the two sliding plates 21 move simultaneously;

The working principle of the gears is that two gears are meshed. When one of the gears rotates, the other gear rotates in the opposite direction; the two gears are fixed on the same axis. When one of the gears rotates, the other gear rotates in the opposite direction. . For example, referring to Fig. 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 Rotate counterclockwise to make the sliding plate 21 move close 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, and the other first transmission tooth 62 on the first transmission shaft 61 rotates counterclockwise, and the first transmission tooth 62 on the first transmission shaft 61 rotates counterclockwise. The second transmission tooth 63 meshed with a transmission tooth 62 rotates clockwise, the first driven tooth 26 meshed with the second transmission tooth 63 rotates counterclockwise, and the spur gear 27 coaxially fixed with the first driven tooth 26 rotates counterclockwise. Rotate clockwise, so that the sliding plate 21 moves close to the center of the protective plate 1 , so that two adjacent sliding plates 21 approach the center of the protective plate 1 at the same time.

As shown in Figure 2, the linkage assembly 6 also includes three second transmission shafts 64, the three second transmission shafts 64 are correspondingly distributed between two adjacent sliding plates 21, and the two ends of the three second transmission shafts 64 are fixed with The first transmission teeth 62; the second transmission teeth 63 are also provided with three pairs, the first transmission teeth 62 at the two ends of the three second transmission shafts 64 are all meshed with the second transmission teeth 63, and each second transmission teeth 63 are in contact with the first slave. The movable teeth 26 mesh.

Specifically, when the first rotating shaft 23 rotates, the sliding plate 21 moves, and the two adjacent sliding plates 21 are moved simultaneously through the first transmission shaft 61, and when the sliding plate 21 moves, the teeth on the sliding plate 21 The spur gear 27 meshed with the bar rotates, and the first driven tooth 26 coaxially fixed with the spur gear 27 rotates to drive the second transmission tooth 63 to rotate, and the second transmission tooth 63 drives the first transmission tooth 62 at one end of the second transmission shaft 64 Rotate, so that the second transmission shaft 64 rotates;

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 to drive The sliding plates 21 move to realize the purpose that the four sliding plates 21 are close to the center of the protective plate 1 or away from the center of the protective plate 1 at the same time.

It should be noted that there is force transmission between any pair of adjacent sliding plates 21, and the linkage assembly 6 cooperates with the partial structure of the limit assembly 2 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, and the transmission of force will be end-to-end, so the input force will not produce a large loss, so that the limit rod 22 can be adjusted very easily.

As shown in Figures 2 and 3, the height adjustment assembly 3 also includes an adjustment shaft 32 that is slidably connected to the fender 1. The adjustment shaft 32 is perpendicular to the surface of the fender 1 and penetrates through the fender 1. The side wall of the adjustment shaft 32 is fixed There are four first telescopic rods 33, the end of each first telescopic rod 33 is fixed with the height adjustment rod 31; the second locking member 321 is fixed on the protective plate 1, and the second locking member 321 is sleeved on the adjustment shaft 32 on.

Specifically, the center of the protective plate 1 is provided with a mounting hole that runs through the two board surfaces, and the adjusting shaft 32 is slidably disposed in the mounting hole. The first telescopic rod 33 is a multi-section telescopic rod, in this embodiment, a three-section telescopic rod. The worker moves the adjustment shaft 32, the adjustment shaft 32 drives the four first telescopic rods 33 to move, and the first telescopic rod 33 drives the adjustment rod 31 to move, thereby adjusting the position of the clamping rod 41 in the vertical direction, so that the protective plate 1 can Holes of different depths are protected, and the multi-section telescopic rod can increase the moving range of the limit rod 22, so that the protective plate 1 can protect holes of more sizes.

As shown in Figure 2 and Figure 3, the clamping assembly 4 also includes a second rotating shaft 42 and four second telescopic rods 43, the second rotating shaft 42 is rotationally connected with the adjusting shaft 32 and runs through the adjusting shaft 32, the second rotating shaft One end of 42 is fixed with the second driving tooth 44; the two ends of the second telescopic rod 43 are fixed with the third transmission tooth 45, and the clamping rod 41 is fixed with the second driven tooth 46, and the two third transmission teeth 45 are respectively connected with The second driving tooth 44 meshes with the second driven tooth 46 ; the connecting plate 7 is disposed between the first telescopic rod 33 and the second telescopic rod 43 ; and the third locking member 421 is disposed on the second rotating shaft 42 .

Specifically, the adjustment shaft 32 is provided with mounting holes running through its two ends, the second rotating shaft 42 is mounted in the mounting holes through bearings, and the connecting plate 7 is fixed to the first telescopic rod 33 but connected to the second telescopic rod 43 bearings. When the first telescopic rod 33 stretches, the connecting plate 7 drives the second telescopic rod 43 to expand and contract synchronously, so the third transmission tooth 45 at one end of the second telescopic rod 43 is always engaged with the second driven tooth 46. When the worker rotates the second shaft 42, the second driving gear 44 rotates to drive the third transmission gear 45 to rotate, and the third transmission gear 45 drives the second telescopic rod 43 to rotate, so that the second driven gear 46 meshing with the third transmission gear 45 rotates, so that This rotates the clamp lever 41 .

As shown in Fig. 4 and Fig. 5, a kind of horizontal opening protective device provided according to the embodiment of the present invention also includes fence assembly 5, and fence assembly 5 comprises four groups of fences 51 that are evenly distributed around the protective plate 1, fence assembly 5 Also include the third telescopic rod 52, the third telescopic rod 52 is a two-section telescopic rod and the node is provided with a fourth locking member 521, the node and the end of the third telescopic rod 52 are fixed with a guardrail 51; Positioning holes 511 are provided on the 51, and positioning pins 54 are inserted in the positioning holes 511 on two adjacent guardrails 51 .

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 arranged on each side of the protective plate 1, and the first telescopic rods 52 of the third telescopic rods 52 Joint and the second joint are all welded with guardrail 51.

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

As shown in Figures 5 and 6, 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, and the connecting rod One end of 53 is limited in the through hole 11, and the other end is spherical. The third telescopic rod 52 is provided with a connecting groove 522 near the end of the connecting rod 53. The connecting rod 53 is located in the connecting groove 522 and the diameter of the end of the connecting rod 53 is spherical. greater than the width of the connection groove 522 .

Specifically, the depth of the through hole 11 is the same as the length of a single segment of the third telescopic rod 52, and the limit ring is fixed in the through hole 11, and the diameter of the non-spherical end of the connecting rod 53 is greater than the inner diameter of the limit ring; There is a notch, and the width of the notch is greater than the cross-sectional diameter of the third telescopic rod 52 .

In the 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 is elongated under the action of the tension, and continues to pull The protective rod 51 and the third telescopic rod 52 gradually slide out from the through hole 11. The third telescopic rod 52 drives the connecting rod 53 to slide until the connecting rod 53 cannot continue to slide. At this time, the third telescopic rod 52 can rotate, and the third telescopic rod 52 can rotate. When the 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 be detached from the protective plate 1 .

As shown in FIG. 1 and FIG. 5 , a cover plate 13 is rotatably connected to the side wall of the protective plate 1 , and a fifth locking member 131 is disposed 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 slip out of the groove 12 .

The embodiment of the present invention also provides a method for using a horizontal hole protection device, comprising the following steps:

S1. First place the protective plate 1 on the hole and place the limit assembly 2 in the hole;

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

S3. Fully lower the height adjustment assembly 3, and adjust the clamping assembly 4, so that one end of the clamping rod 41 is rotated beyond the boundary of the hole;

S4. Move up the height adjustment assembly 3, so that the clamping rod 41 abuts against the wall around the hole;

Wherein, the limit rod 22 is blocked by the inner wall of the hole and cannot continue to move, so the protective plate 1 is not easy to move in the horizontal direction, and the clamping rod 41 is blocked by the walls around the hole and cannot continue to move, so the protective plate 1 is difficult to move vertically. movement, so as to ensure that the protective plate 1 can stably block the hole.

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present invention without limitation. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be carried out Modifications or equivalent replacements without departing from the spirit and scope of the technical solution of the present invention shall be covered by the claims of the present invention.

Claims (10)

1. Horizontal entrance to a cave protector, characterized by includes guard plate (1), still includes:

the limiting assembly (2), the limiting assembly (2) comprises four sliding plates (21), the four sliding plates (21) are equidistantly surrounded on the surface of the protection plate (1), the four sliding plates (21) are respectively connected with the protection plate (1) in a sliding manner, and each sliding plate (21) is fixedly provided with a limiting rod (22) perpendicular to the surface of the protection plate (1);

the height adjusting assembly (3), the height adjusting assembly (3) comprises height adjusting rods (31), each limiting rod (22) is connected with one height adjusting rod (31) in a sliding mode, and the height adjusting rods (31) are coaxial with the limiting rods (22);

the clamping assembly (4), the clamping assembly (4) comprises clamping rods (41), each clamping rod (41) is connected to the corresponding height adjusting rod (31) in a rotating mode, the clamping rods (41) are parallel to the plate surface of the protection plate (1), and the rotation axis of each clamping rod (41) is perpendicular to the plate surface of the protection plate (1).

2. A horizontal portal protection device as claimed in claim 1 wherein: the limiting assembly (2) further comprises a first rotating shaft (23) which is rotationally connected with the protection plate (1), and the first rotating shaft (23) is perpendicular to the plate surface of the protection plate (1) and penetrates through the protection plate (1); one end of the first rotating shaft (23) is connected with a first driving tooth (24), the other end of the first rotating shaft is connected with a handle (25), and a first locking piece (251) is arranged on the handle (25); be provided with first driven tooth (26) on guard plate (1), first driven tooth (26) coaxial fixed with straight-tooth wheel (27), first driven tooth (26) with first initiative tooth (24) meshing, be equipped with the rack on sliding plate (21), straight-tooth wheel (27) with rack meshing on sliding plate (21).

3. A horizontal portal protection device as claimed in claim 2 wherein: the novel protective plate comprises a protective plate body and is characterized by further comprising a linkage assembly (6), wherein the linkage assembly (6) comprises a first transmission shaft (61) rotatably arranged on the protective plate body (1), first transmission teeth (62) are fixed at two ends of the first transmission shaft (61), second transmission teeth (63) are rotatably connected to the protective plate body (1), and the two first transmission teeth (62) are respectively meshed with the second transmission teeth (63) and the first driving teeth (24); the two sides of each sliding plate (21) are provided with a first driven tooth (26) and a straight gear (27), each straight gear (27) is meshed with a rack on the sliding plate (21), and a second transmission tooth (63) is meshed with the first driven tooth (26).

4. A horizontal portal protection device as claimed in claim 3 wherein: the linkage assembly (6) further comprises three second transmission shafts (64), the three second transmission shafts (64) are correspondingly distributed between every two adjacent sliding plates (21), and the two ends of the three second transmission shafts (64) are respectively fixed with the first transmission teeth (62); the second transmission teeth (63) are further provided with three pairs, the first transmission teeth (62) at two 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).

5. A horizontal portal protection device as claimed in claim 1 wherein: the height adjusting assembly (3) further comprises an adjusting shaft (32) which is in sliding connection with the protection plate (1), the adjusting shaft (32) is perpendicular to the plate surface of the protection plate (1) and penetrates through the protection plate (1), four first telescopic rods (33) are fixed on the side wall of the adjusting shaft (32), and the tail end of each first telescopic rod (33) is fixed with the height adjusting rod (31); the protection plate (1) is fixedly provided with a second locking piece (321), and the second locking piece (321) is sleeved on the adjusting shaft (32).

6. The horizontal portal protection device of claim 5 wherein: the clamping assembly (4) further comprises a second rotating shaft (42) and four second telescopic rods (43), the second rotating shaft (42) is rotationally connected with the adjusting shaft (32) and penetrates through the adjusting shaft (32), and a second driving tooth (44) is fixed at one end of the second rotating shaft (42); third transmission teeth (45) are fixed at two ends of the second telescopic rod (43), second driven teeth (46) are fixed on the clamping rod (41), and the two third transmission teeth (45) are respectively meshed with the second driving teeth (44) and the second driven teeth (46); a connecting plate (7) is arranged between the first telescopic rod (33) and the second telescopic rod (43); the second rotating shaft (42) is provided with a third locking piece (421).

7. A horizontal portal protection device as claimed in claim 1 wherein: the novel protective fence comprises a protective fence body and is characterized by further comprising a fence assembly (5), wherein the fence assembly (5) comprises four groups of protective fences (51) uniformly distributed around the protective board (1), the fence assembly (5) further comprises a third telescopic rod (52), the third telescopic rod (52) is a two-section telescopic rod, a fourth locking piece (521) is arranged at a node, and the protective fences (51) are fixed at the node and the tail end of the third telescopic rod (52); the guard rails (51) are provided with positioning holes (511), and positioning pins (54) are inserted into the positioning holes (511) on two adjacent guard rails (51).

8. The horizontal portal protection device of claim 7 wherein: the side wall of the protection plate (1) is provided with a through hole (11) for accommodating the third telescopic rod (52) and a groove (12) for accommodating the protective guard (51); connecting rod (53) are arranged in the through hole (11) in a sliding mode, one end of the connecting rod (53) is limited in the through hole (11), the other end of the connecting rod is spherical, a connecting groove (522) is formed in one end, close to the connecting rod (53), of the third telescopic rod (52), the connecting rod (53) is located in the connecting groove (522), and the diameter of one spherical end of the connecting rod (53) is larger than the width of the connecting groove (522).

9. The horizontal portal protection device of claim 8 wherein: the side wall of guard plate (1) rotates and is connected with apron (13), apron (13) with be provided with fifth retaining member (131) between guard plate (1).

10. A method of using a horizontal opening protection device as claimed in any one of claims 1 to 9, comprising the steps of:

s1, firstly, arranging a protection plate (1) on a hole and arranging a limiting assembly (2) in the hole;

s2, adjusting the limiting assembly (3) to enable the limiting rod (22) to be abutted with the inner wall of the hole;

s3, completely lowering the height-adjusting component (3) and adjusting the clamping component (4) to enable one end of the clamping rod (41) to rotate outside the boundary of the hole;

s4, the height adjusting assembly (3) is moved upwards, and the clamping rod (41) is abutted with the wall surface around the hole.