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 tunnel portal protection device and use method thereof

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

In building construction engineering, the workman usually can reserve the entrance to a cave on the ground, makes things convenient for the installation and the laying of later stage carrying out pipeline or other facilities, and the entrance to a cave of reserving exists very big potential safety hazard, and workman or construction tool probably drops in the entrance to a cave to lead to workman injury or instrument damage, still probably smash the workman under the entrance to a cave, consequently protect the entrance to a cave very much.

The current building field has a set of safety protection standard who faces limit entrance to a cave, and the type of entrance to a cave is different or the size is different, and the measure of protection is also different, and wherein the protection standard of horizontal entrance to a cave is as follows:

1. when the short side size of the horizontal hole is smaller than 500mm, a template is adopted to manufacture a cover plate for protection, the lap joint length of the cover plate and the outer edge of the hole is not smaller than 100mm, square wood strips are nailed on the periphery of the cover plate, the cover plate is prevented from being displaced, and the cover plate is painted with 20cm yellow-black alternate paint;

2. when the short side size of the horizontal hole is more than 500mm and less than 1500mm, a cover plate is manufactured by adopting a template to protect, steel pipe protection rails with the distance of 1.2m are added at the periphery, the distances between the bottom, middle and top cross bars are 60cm, and the steel pipe protection rails are painted with yellow and black paint at the distance of 40cm;

3. the size of the opening is too large to carry out horizontal protection, and the protection is carried out according to the critical edge protection standard; the outside of the guardrail is hung with a falling-preventing safety warning sign.

The general horizontal entrance to a cave is circular entrance to a cave or rectangle entrance to a cave, and the diameter of circular entrance to a cave is generally at 500mm to 1000mm, and the minor face length of rectangle entrance to a cave is generally at 500mm to 1000mm, so the workman adopts the template preparation apron to protect generally to install 1.2m steel pipe rail guard additional around and protect, this kind of safeguard measure has following defect:

1. the cover plate is manufactured by adopting the template, a worker needs to cut the template with proper size according to the size of the hole, nails square battens around the cover plate after the cover plate is manufactured, and finally steel pipe guard rails are installed around the hole, so that tools such as a cutting knife, an iron hammer, an electric screwdriver and the like are needed in the installation or disassembly process, the installation or disassembly process is complicated, more time is needed in the whole process, and the construction efficiency is reduced;

2. the apron nail has square battens all around and comes to carry out spacingly to the apron, and the iron nail passes the square battens that has certain thickness and nails into the floor, prevents to produce relative displacement through frictional force between iron nail and the floor, but the intensity of iron nail is lower to probably not hard up between iron nail and the floor, and again, square battens can only carry out spacingly at the horizontal direction of apron, and the apron still probably takes place longitudinal movement and breaks away from the entrance to a cave, therefore only relies on iron nail and square battens to carry out spacing factor of safety to the apron lower.

Disclosure of Invention

Aiming at the defects existing in the prior art, the invention provides a horizontal hole protection device and a use method thereof, which solve the problems that the horizontal hole protection measures in the prior art cannot reach higher safety coefficient, the implementation process is complex and the efficiency is low.

According to a first aspect, the present invention provides a horizontal portal protection device, which includes a protection plate, and further includes:

the limiting assembly comprises four sliding plates, the four sliding plates are equidistantly wound on the surface of the protection plate, the four sliding plates are respectively connected with the protection plate in a sliding manner, and each sliding plate is fixedly provided with a limiting rod perpendicular to the surface of the protection plate;

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

the clamping assembly comprises clamping rods, each clamping rod is connected to the corresponding height adjusting rod in a rotating mode, the clamping rods are parallel to the plate surface of the protection plate, and the rotation axes of the clamping rods are perpendicular to the plate surface of the protection plate.

According to a second aspect, the present invention provides a method for using a horizontal tunnel portal protection device, including the steps of:

s1, firstly, placing a protection plate on a hole and placing a limiting assembly in the hole;

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

s3, completely lowering the height-adjusting assembly, and adjusting the clamping assembly to enable one end of the clamping rod to rotate outside the boundary of the hole;

s4, the height-adjusting component is moved upwards, so that the clamping rod is abutted with the wall surface around the hole.

The technical principle of the invention is as follows: the worker firstly places the protection plate above the hole, and places the limiting component in the hole, so that the protection plate can seal the hole; then adjusting the limiting assembly to enable the four sliding plates to slide on the plate surface of the protection plate, and enabling the four sliding plates to slide to drive the four limiting rods to move until the four limiting rods are abutted with the inner wall of the hole, so that the protection plate is not easy to displace in the horizontal direction;

and then the height-adjusting assembly is completely lowered, a rotating space is reserved for the clamping rod, then the clamping assembly is adjusted, one end of the clamping rod is enabled to rotate out of the boundary of the hole, then the height-adjusting assembly is moved upwards, the clamping rod is enabled to be abutted with the wall surface around the hole, and at the moment, the protection plate is not easy to displace in the vertical direction.

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

1. the limiting rod is abutted with the inner wall of the hole, so that the protection plate is not easy to displace in the horizontal direction, and the protection plate can protect the hole more stably;

2. the limiting rods can slide along the plate surface of the protection plate, so that the purpose that the protection plate protects holes with different sizes is achieved, and the four limiting rods can slide simultaneously, so that the adjustment rate is improved;

3. the clamping rods are abutted with the wall surfaces around the hole, so that the protection plate is not easy to displace in the vertical direction, and the protection plate can protect the hole more stably;

4. the height position of the clamping rod can be adjusted through the height adjusting rod, so that the purpose that the protection plate protects holes with different depths is achieved.

Drawings

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

Fig. 2 is a schematic bottom view of a fender according to an embodiment of the invention.

Fig. 3 is a schematic top view of a shielding plate according to an embodiment of the invention.

Fig. 4 is a schematic diagram of a guard rail according to an embodiment of the invention.

Fig. 5 is a schematic side view of a fender according to an embodiment of the invention.

Fig. 6 is an enlarged schematic view of the portion a in fig. 5.

In the above figures: 1. a protection plate; 11. a through hole; 12. a groove; 13. a cover plate; 131. a fifth locking member; 2. a limit component; 21. a sliding plate; 22. a limit rod; 23. a first rotation shaft; 24. a first drive tooth; 25. a handle; 251. a first locking member; 26. a first driven tooth; 27. spur gears; 3. an elevation adjustment assembly; 31. a height-adjusting rod; 32. an adjusting shaft; 321. a second locking member; 33. a first telescopic rod; 4. a clamping assembly; 41. a clamping rod; 42. a second rotation shaft; 421. a third locking member; 43. a second telescopic rod; 44. a second active tooth; 45. a third drive tooth; 46. a second driven tooth; 5. a fence assembly; 51. a guard rail; 511. positioning holes; 52. a third telescopic rod; 521. a fourth locking member; 522. a connecting groove; 53. a connecting rod; 54. a positioning pin; 6. a linkage assembly; 61. a first drive shaft; 62. a first drive tooth; 63. a second drive tooth; 64. a second drive shaft; 7. and (5) connecting a plate.

Detailed Description

The technical scheme of the invention is further described below with reference to the accompanying drawings and examples.

As shown in fig. 1 and 2, an embodiment of the present invention provides a horizontal tunnel portal protection device, including a protection board 1, further including: the limiting assembly 2 comprises four sliding plates 21, the four sliding plates 21 are equidistantly wound 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 device comprises a height adjusting assembly 3, wherein 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 manner, and the height adjusting rods 31 are coaxial with the limiting rods 22; still include chucking subassembly 4, chucking subassembly 4 includes chucking pole 41, and every height-adjusting pole 31 is all gone up to rotate and is connected with a chucking pole 41, and chucking pole 41 is parallel with the face of guard plate 1, and the axis of rotation of chucking pole 41 is perpendicular to the face of guard plate 1.

Specifically, the protection plate 1 is an alloy plate with certain strength but light weight, the material of the protection plate 1 is selected from but not limited to aluminum alloy, the aluminum alloy has higher strength and lower density, the protection plate 1 is convenient for workers to carry and install, the shape of the protection plate 1 can be set according to actual needs, the protection plate 1 in the embodiment is a rectangular plate, and a support column for supporting the protection plate 1 is fixed on the protection plate 1;

four limiting plates are fixed on the protection plate 1, the four limiting plates are uniformly and circumferentially distributed around the center of the protection plate 1, a sliding groove is formed between every two adjacent limiting plates, the sliding plates 21 slide in the sliding groove, the distances from the four sliding plates 21 to the center of the protection plate 1 are the same, the plate surfaces of the sliding plates 21 are attached to the plate surfaces of the protection plate 1, and the sliding plates 21 can move along the diagonal line of the protection plate 1 to be close to the center of the protection plate 1 or away from the center of the protection plate 1;

four corners of guard plate 1 are fixed with the block piece, and the block piece can block sliding plate 21, makes sliding block 21 be difficult for follow guard plate 1 and goes out, and gag lever post 22 welding is on sliding block 21, and gag lever post 22 is cylindric, and gag lever post 22 cover is established on height-adjusting rod 31, and gag lever post 22 and height-adjusting rod 31 can be coaxial relative slip.

In the embodiment of the invention, a worker firstly places the protection plate 1 above the hole and places the limiting component 2 in the hole, so that the hole is completely blocked by the protection plate 1, the center of the protection plate 1 is approximately positioned at the center of the hole, then the limiting component 2 is regulated, the four sliding plates 21 move along the diagonal line of the protection plate 1 at the same time, the sliding plates 21 move to drive the limiting rod 22 to move until the limiting rod 22 abuts against the inner wall of the hole, the limiting rod 22 is blocked by the inner wall of the hole, and the limiting rod 22 cannot move continuously, so that the protection plate 1 is not easy to displace in the horizontal direction, the hole is blocked by the protection plate 1 more stably, and the holes with different sizes can be protected by the limiting rod 22 capable of horizontally moving;

then the workman adjusts and adjusts the subassembly 3 that increases, make the pole 31 that increases move downwards along vertical direction, it moves to increase the pole 31 and drive chucking pole 41, until chucking pole 41 can't continue the downwardly moving, then adjust chucking subassembly 4, make chucking pole 41 rotate, until the one end of chucking pole 41 rotates outside the boundary of entrance to a cave, then adjust and increase subassembly 3, make the pole 31 that increases move upwards, it drives chucking pole 41 and remove, until chucking pole 41 and the wall butt around the entrance to a cave, the wall around the entrance to a cave blocks chucking pole 41, make chucking pole 41 unable continue the upward movement, consequently, the difficult vertical direction's of emergence removal of guard plate 1, thereby make guard plate 1 more steadily shutoff the entrance to a cave, but the chucking pole 41 of vertical movement makes guard plate 1 can protect the entrance to a cave of different degree of depth.

As shown in fig. 2 and 3, the limiting assembly 2 further comprises a first rotating shaft 23 rotatably connected with the protection plate 1, wherein 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 is connected with a handle 25, and a first locking piece 251 is arranged on the handle 25; the protection plate 1 is provided with a first driven tooth 26, the first driven tooth 26 is coaxially fixed with a spur gear 27, the first driven tooth 26 is meshed with the first driving tooth 24, the sliding plate 21 is provided with a rack, and the spur gear 27 is meshed with the rack on the sliding plate 21.

Specifically, the protection plate 1 is provided with mounting holes penetrating through two plate surfaces, the first rotating shaft 23 is mounted in the mounting holes through a bearing, and the first driving teeth 24 are bevel gears; the first locking member 251 may be, but not limited to, a bolt, and the handle 25 has a threaded hole; the protection plate 1 is fixedly provided with a mounting plate, holes penetrating through two plate surfaces are formed in the mounting plate, the first driven teeth 26 are connected with the spur gears 27 through shafts, the shafts are mounted in the holes through bearings, and the first driven teeth 26 are bevel gears.

In the embodiment of the invention, a worker rotates the handle 25, the handle 25 drives the first rotating shaft 23 to rotate, so that the first driving tooth 24 rotates, the first driven tooth 26 meshed with the first driving tooth 24 rotates, the first driven tooth 26 drives the spur gear 27 to rotate, the spur gear 27 rotates to move the sliding plate 21, and therefore the position of the limiting rod 22 is adjusted, and the first locking piece 251 can enable the handle 25 to not rotate, so that the limiting rod 22 is positioned.

As shown in fig. 2 and fig. 3, the horizontal hole protection device provided by the embodiment of the invention further comprises a linkage assembly 6, wherein the linkage assembly 6 comprises a first transmission shaft 61 rotatably arranged on the protection plate 1, first transmission teeth 62 are fixed at two ends of the first transmission shaft 61, a second transmission tooth 63 is rotatably connected on the protection plate 1, and the two first transmission teeth 62 are respectively meshed with the second transmission teeth 63 and the first driving teeth 24; the first driven teeth 26 and the spur gears 27 are arranged on both sides of each sliding plate 21, each spur gear 27 is meshed with a rack on the sliding plate 21, and the second transmission teeth 63 are meshed with the first driven teeth 26.

Specifically, the protection plate 1 is fixed with a mounting plate, the mounting plate is provided with holes penetrating through the two plate surfaces, the first transmission shaft 61 is installed in the holes through bearings, it should be noted that the position of the second transmission gear 63 can be set according to actual needs, but the length of the sliding plate 21 is limited, so that the position of the second transmission gear 63 should be reasonably set, and in this embodiment, the first transmission shaft 61 is parallel to one side of the protection plate 1.

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

the working principle of the gears is that the two gears are meshed, and when one of the gears rotates, the other gear rotates in the opposite direction; the two gears are coaxially fixed, and 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 engaged with the first driving tooth 24 rotates clockwise, and the spur gear 27 coaxially fixed with the first driven tooth 26 rotates counterclockwise, so that the slide plate 21 moves near the center of the shielding plate 1. When the first driving tooth 24 rotates counterclockwise, the first driving tooth 62 meshed with the first driving tooth 24 rotates clockwise, the other first driving tooth 62 on the first transmission shaft 61 rotates counterclockwise, the second driving tooth 63 meshed with the first driving tooth 62 rotates clockwise, the first driven tooth 26 meshed with the second driving tooth 63 rotates counterclockwise, the spur gear 27 coaxially fixed with the first driven tooth 26 rotates clockwise, and thus the sliding plates 21 move close to the center of the protection plate 1, so that two adjacent sliding plates 21 simultaneously approach to the center of the protection plate 1.

As shown in fig. 2, the linkage assembly 6 further includes three second transmission shafts 64, the three second transmission shafts 64 are correspondingly distributed between every two adjacent sliding plates 21, and both ends of the three second transmission shafts 64 are fixed with first transmission teeth 62; the second drive teeth 63 are further provided with three pairs, the first drive teeth 62 at both ends of the three second drive shafts 64 are engaged with the second drive teeth 63, and each second drive tooth 63 is engaged with the first driven tooth 26.

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

the second transmission shaft 64 drives the first transmission gear 62 at the other end to rotate, the first transmission gear 62 drives the second transmission gear 63 to rotate, and the second transmission gear 63 drives the first driven gear 26 to rotate, so that the spur gear 27 rotates to drive the sliding plates 21 to move, and the purpose that four sliding plates 21 are simultaneously close to the center of the protection plate 1 or simultaneously far away from the center of the protection plate 1 is achieved.

It should be noted that, there is force transmission between every two adjacent sliding plates 21, and the linkage assembly 6 and part of the structures of the limiting assembly 2 are mutually matched to form an annular closed path, when the worker rotates the handle 25, the force input by the worker can be transmitted along the annular closed path, and the force transmission is connected end to end, so that the input force cannot generate larger loss, and the limiting rod 22 can be easily adjusted.

As shown in fig. 2 and 3, the height-adjusting component 3 further comprises an adjusting shaft 32 slidably connected 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 fixed with a second locking piece 321, and the second locking piece 321 is sleeved on the adjusting shaft 32.

Specifically, the center of the protection plate 1 is provided with a mounting hole penetrating through two plate surfaces, the adjusting shaft 32 is slidably disposed in the mounting hole, and the first telescopic rod 33 is a multi-section telescopic rod, in this embodiment, a three-section telescopic rod. The workman removes adjusting shaft 32, and adjusting shaft 32 drives four first telescopic links 33 and removes, and first telescopic link 33 drives and adjusts pole 31 and remove to adjust chucking pole 41 in the position of vertical direction, make guard plate 1 can protect the entrance to a cave of different degree of depth, and multisection telescopic link can increase gag lever post 22's range of movement, thereby make guard plate 1 can protect the entrance to a cave of more sizes.

As shown in fig. 2 and 3, the clamping assembly 4 further includes a second rotating shaft 42 and four second telescopic rods 43, the second rotating shaft 42 is rotatably 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 driving teeth 45 are fixed at two ends of the second telescopic rod 43, a second driven tooth 46 is fixed on the clamping rod 41, and the two third driving 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 rotation shaft 42 is provided with a third locking member 421.

Specifically, the adjusting shaft 32 is provided with mounting holes penetrating through both end surfaces thereof, the second rotating shaft 42 is mounted in the mounting holes by bearings, and the connecting plate 7 is fixed to the first telescopic rod 33 but is bearing-connected to the second telescopic rod 43. When the first telescopic rod 33 stretches, the connecting plate 7 drives the second telescopic rod 43 to stretch synchronously, so that the third driving tooth 45 at one end of the second telescopic rod 43 is always meshed with the second driven tooth 46, when a worker rotates the second rotating shaft 42, the second driving tooth 44 rotates to drive the third driving tooth 45 to rotate, the third driving tooth 45 drives the second telescopic rod 43 to rotate, and the second driven tooth 46 meshed with the third driving tooth 45 rotates to enable the clamping rod 41 to rotate.

As shown in fig. 4 and fig. 5, the horizontal tunnel portal protection device provided by the embodiment of the invention further includes a fence assembly 5, the fence assembly 5 includes four groups of guard rails 51 uniformly distributed around the protection plate 1, the fence assembly 5 further includes a third telescopic rod 52, the third telescopic rod 52 is a two-section telescopic rod, a fourth locking member 521 is arranged at a node, and the guard rails 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.

Specifically, the number of the third telescopic rods 52 may be set according to actual needs, in this embodiment, two third telescopic rods 52 are disposed on each side of the protection plate 1, and the guard rails 51 are welded on the first section and the second section of the third telescopic rods 52.

In the embodiment of the invention, after the worker adjusts the length of the third telescopic rod 52, the worker locks the fourth locking piece 521, the positioning pin 54 is matched with the positioning hole 511 to fix the adjacent guard rail 51, so that the guard rail 51 is not easy to collapse, the guard rail 51 can play a role in blocking and warning, the worker is not easy to walk on the protection plate 1, and the protection effect of the horizontal entrance protection device is further improved.

As shown in fig. 5 and 6, 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 guard rail 51; the 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, the other end of the connecting rod 53 is spherical, the 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 positioned 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.

Specifically, the depth of the through hole 11 is the same as the single-section length 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; the protection plate 1 is provided with a notch, and the width of the notch is larger than the section diameter of the third telescopic rod 52.

In the embodiment of the invention, the third telescopic rod 52 is accommodated in the through hole 11, the guard rail 51 is accommodated in the groove 12, the guard rail 51 is pulled by a worker, the third telescopic rod 52 stretches under the action of the pulling force and continues to pull the guard rod 51, the third telescopic rod 52 gradually slides out of 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 when the third telescopic rod 52 rotates, one spherical end of the connecting rod 53 is always positioned in the connecting groove 522, so that the third telescopic rod 52 cannot be separated from the guard plate 1.

As shown in fig. 1 and 5, the side wall of the protection plate 1 is rotatably connected with a cover plate 13, and a fifth locking member 131 is disposed between the cover plate 13 and the protection plate 1. The cover plate 13 is used for limiting the guard rail 51, so that the guard rail 51 is not easy to slide out of the groove 12.

The embodiment of the invention also provides a use method of the horizontal tunnel portal protection device, which comprises the following steps:

s1, firstly, placing a protection plate 1 on a hole and placing 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, so that the clamping rod 41 is abutted with the wall surface around the hole;

wherein, stop lever 22 receives the unable removal that continues of blocking of entrance to a cave inner wall, consequently guard plate 1 is difficult for taking place the removal of horizontal direction, and chucking pole 41 receives the wall around the entrance to a cave to block unable the continuation of removing, consequently guard plate 1 is difficult for taking place the removal of vertical direction to this guarantees that guard plate 1 can block the entrance to a cave steadily.

Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of 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.