CN117588072A - Edge opening safety protection device and installation method thereof - Google Patents

Abstract

The application provides a safety protection device for a side-facing hole and an installation method thereof, and relates to the technical field of hole protection, the safety protection device comprises a protection rod, two rod pieces are configured, one rod piece is a fixed rod, the other rod piece is a sliding rod, the fixed rod is movably connected with the sliding rod, and the distance between two end faces of one end, away from the sliding rod, of the fixed rod is adjustable; the fixing mechanism comprises a first clamping assembly and a second clamping assembly which are respectively arranged at two ends of the protective rod, wherein the second clamping assembly comprises two second clamping plates which are respectively arranged at two sides of the protective rod and a tension spring used for connecting the two second clamping plates, a clamping groove used for sliding and connecting the two second clamping plates is formed in the end part of the protective rod, two ends of the clamping groove are respectively closed, and when the two second clamping plates are respectively arranged at two sides of the building component, the tension spring is always in a stretching state. The safety protection device has higher universality.

Description

Edge opening safety protection device and installation method thereof

Technical Field

The application relates to the technical field of entrance to a cave protection, in particular to a face-side entrance to a cave safety protection device and an installation method thereof.

Background

It is well known that high-rise fall accidents occur most frequently and are extremely dangerous, with critical edge protection being important.

The prior edge protection is respectively a steel pipe fastener combination, a finished product fence and other semi-finished products fences, but in the installation and fixation process, embedded bolts, expansion screws or other embedded bars are usually adopted, the construction is complex, and a large amount of resources are required to be consumed for installing and dismantling temporary guardrails. Particularly in the construction process, a large number of edges are easy to lack support. When the finished product or semi-finished guardrail is adopted, the embedded part is required to be installed, the construction control difficulty is high, and the waste of the embedded part material can be caused; or expansion bolts need to be punched, so that the damage to the building or the finished product is caused, and the construction quality is greatly influenced.

Disclosure of Invention

In order to improve the technical problems mentioned in the background art, the application provides a safety protection device for a critical hole and an installation method thereof.

In a first aspect, the present application provides a face limit entrance to a cave safety device, adopts following technical scheme:

a safety protection device for a critical hole comprises

The protection rod is at least provided with two rod pieces, one rod piece is a fixed rod, the other rod piece is a sliding rod, the fixed rod is movably connected with the sliding rod, and the distance between two end faces of the fixed rod and the sliding rod, which are opposite, away from one end, is adjustable; and

the fixing mechanism comprises a first clamping assembly and a second clamping assembly which are respectively arranged at two ends of the protective rod, two ends of the protective rod are respectively connected with building components on two sides of the edge opening through the first clamping assembly and the second clamping assembly, the second clamping assembly comprises two second clamping plates which are respectively arranged at two sides of the protective rod and a tension spring used for connecting the two second clamping plates, a clamping groove used for sliding connection of the two second clamping plates is formed in the end part of the protective rod, two ends of the clamping groove are closed, and when the two second clamping plates are respectively arranged at two sides of the building components, the tension spring is always in a stretching state.

Still further, first clamping assembly is including being located two first grip blocks of guard bar both sides respectively and being used for driving two first grip blocks and supporting the first clamping piece of tight in building member both sides respectively, one side vertical fixation that first grip block is close to the guard bar has the slide, two slide coincide and slide the setting, two slide and two first grip blocks make up to form the U font, be close to the perpendicular first drive plate that is fixed with threaded through hole on the slide of guard bar, first drive plate tip and guard bar tip slip butt, dodge the groove has still been seted up on this slide, vertical fixation has the second drive plate that has threaded through hole on another slide, the second drive plate wears to establish and slide to set up in dodging the inslot, first clamping piece sets up to rotate the bi-directional lead screw of installing at the guard bar tip, first drive plate is established through threaded through hole thread bush in the one end of bi-directional lead screw, the second drive plate is established through threaded through thread through hole thread bush in the other end of bi-directional lead screw.

Further, a rocking handle is arranged at the end part of the bidirectional screw rod.

Further, a first locking piece for locking and positioning the rocking handle is arranged on the protective rod.

Furthermore, the end part of the fixed rod is provided with a jack for sliding and inserting the sliding rod, and the jack is in inserting fit with the sliding rod.

Still further, the spout has been seted up on the dead lever outer wall, spout and jack intercommunication setting, and the length direction of spout is unanimous with the length direction of dead lever, be provided with locking subassembly between dead lever and the slide bar, locking subassembly can be with the slide bar locking on the optional position of dead lever, and locking subassembly is including fixing on the slide bar and wear to establish and slide the gag lever post that sets up in the spout and be located the dead lever and be used for locking the second locking piece in spout optional position department with the gag lever post.

Still further, the second locking piece sets up to the clamping rod, and the one end rotation of clamping rod is installed on the dead lever outer wall, and a plurality of spacing grooves that are used for hasp on the gag lever post have been seted up to the clamping rod bottom, and a plurality of spacing grooves set up along clamping rod length direction interval.

Further, the insertion holes on the fixing rods are arranged to be non-round holes.

Still further, be provided with the impeller that is used for driving the sliding rod to the direction motion of keeping away from the dead lever in the jack of dead lever.

In a second aspect, the present application provides a method for installing a safety protection device for an edge opening, based on the safety protection device for an edge opening, comprising the following steps,

stretching the tension spring to enable the two second clamping plates to respectively abut against the two side walls of the building component at one side, so that one end of the protection rod is temporarily fixed;

then unlocking the locking assembly, and adjusting the length of the protective rod to enable the end part of the sliding rod to be abutted against the building component on the other side, wherein the two first clamping plates are respectively positioned on two sides of the building component;

the two-way screw rod is rotated to drive the two first clamping plates to be close to each other and abut against two sides of the building component, so that the other end of the protection rod is stably arranged on the building component;

the sliding rod is locked on the fixed rod by the locking assembly, and the protection rod can stably shield the opening at the building component.

In summary, the present application includes at least one of the following beneficial technical effects:

1. according to the invention, through the length-adjustable protective rod, the adjacent edge holes with different sizes can be adaptively installed, so that the universality of the protective device is improved;

2. the distance between the two first clamping plates and the two second clamping plates at the two ends of the protective rod is adjustable, so that the end parts of the protective rod can be fixed on building components with different thicknesses;

3. the two second clamping plates can synchronously slide in the clamping grooves at the end parts of the protective rods in the same direction, so that when the building components at the two sides of the edge opening are misplaced, the two ends of the protective rods can be perpendicular to the side walls of the building components at the same side, and the protective stability of the protective rods to the edge opening is ensured.

Drawings

In order to more clearly illustrate the invention or the technical solutions of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic overall structure of an embodiment of the present application.

Fig. 2 is a schematic structural view of a fixing rod, a sliding rod, a locking assembly, a clamping groove and an anti-falling piece in the embodiment of the application.

Fig. 3 is a schematic structural view of the second clamping assembly and the clamping block according to the embodiment of the present application.

Fig. 4 is a schematic structural view of the sliding rod, the first clamping assembly and the first locking member in the embodiment of the present application.

Reference numerals: 1. a jack; 2. a chute; 3. a protective rod; 31. a fixed rod; 32. a slide bar; 4. a locking assembly; 41. a limit rod; 42. a clamping rod; 43. a limit groove; 5. a first clamping assembly; 51. a first clamping plate; 52. a slide plate; 53. a first driving plate; 54. a second driving plate; 55. a two-way screw rod; 6. a second clamping assembly; 61. a second clamping plate; 62. a tension spring; 7. an avoidance groove; 8. a clamping groove; 9. a pushing member; 10. a rocking handle; 11. a first locking member; 12. and (5) clamping blocks.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The embodiment of the application discloses a critical edge opening safety protection device and an installation method thereof. Referring to fig. 1 and 2, the safety protection device for the edge opening comprises a protection rod 3 for protecting the edge opening and a fixing mechanism for fixing the protection rod 3 on building components at two sides of the edge opening; for improving the commonality of guard bar 3 for guard bar 3 can all effectively protect the limb entrance to a cave of equidimension not, and guard bar 3's length is adjustable setting. Wherein, the protection rod 3 is configured with at least two rods, in the embodiment of the application, the number of the rods is two, one rod is a fixed rod 31, and the other rod is a sliding rod 32; the fixed rod 31 is movably connected with the sliding rod 32, and in the embodiment of the application, the movable connection mode of the fixed rod 31 and the sliding rod 32 is sliding insertion; specifically, the end of the fixed rod 31 is provided with a jack 1 for sliding and inserting the sliding rod 32, the jack 1 is provided with a non-circular hole, in the embodiment of the application, the jack 1 is provided with a square hole, and the jack 1 is inserted and matched with the sliding rod 32, so that the sliding rod 32 can stably slide in the fixed rod 31; through setting up the jack 1 of dead lever 31 tip with the plug of slide bar 32 to adjust the distance between the both ends face of dead lever 31 and slide bar 32 opposite directions one end, make the guard bar 3 that forms by dead lever 31 and slide bar 32 combination can adapt to the limb entrance to a cave of equidimension, and through fixed establishment stable mounting on limb entrance to a cave both sides building element. In order to ensure that the protection rod 3 can be stably installed at the edge opening, the fixing mechanism comprises a first clamping assembly 5 arranged at the end part of the sliding rod 32 and a second clamping assembly 6 arranged at the end part of the fixing rod 31, and two ends of the protection rod 3 are respectively connected with building components at two sides of the edge opening through the first clamping assembly 5 and the second clamping assembly 6.

Considering that the building components on two sides of the edge opening may have dislocation, the protection rod 3 cannot be perpendicular to the surfaces of the building components on two sides, which are close to one another, under the combined clamping action of the first clamping assembly 5 and the second clamping assembly 6, so that the installation stability of the protection rod 3 is affected. In order to solve the above possible problems, referring to fig. 1, 2 and 3, the thickness of the fixing rod 31 is greater than that of the building component on the same side, and the end of the fixing rod 31 is provided with T-shaped clamping grooves 8, the clamping grooves 8 are distributed along the thickness direction of the building component, and two ends of the clamping grooves 8 are all closed. The second clamping assembly 6 includes two second clamping plates 61 respectively located at both sides of the fixing rod 31 and a tension spring 62 for connecting the two second clamping plates 61; the second clamping plates 61 are fixedly provided with clamping blocks 12 which are in clamping fit with the clamping grooves 8, so that the two second clamping plates 61 can freely slide in the clamping grooves 8 in the same or opposite directions under the action of the clamping blocks 12; meanwhile, when the two second clamping plates 61 are respectively positioned at the two sides of the building component, the tension springs 62 are always in a stretching state,

when the protective rod 3 is installed, the two second clamping plates 61 can be respectively abutted against the two side surfaces of one side of the building component under the traction of the tension spring 62, so that the end part of the fixed rod 31 is connected with the building component; the position of the slide bar 32 on the fixed bar 31 is then adjusted such that the slide bar 32 moves the first clamping assembly 5 towards the building element on the other side and is fixed to the building element by the first clamping assembly 5. Because two second grip blocks 61 can slide in the draw-in groove 8 in step, when the building element of facing limit entrance to a cave both sides has the dislocation, can adjust the position of two second grip blocks 61 in draw-in groove 8 towards same direction in step for the both ends of protection pole 3 are all perpendicular with the lateral wall of the building element of corresponding side, have ensured the stable protection of protection pole 3 to facing the limit entrance to a cave.

The structure of the first clamping assembly 5 may be the same as or different from that of the second clamping assembly 6, and in this embodiment of the present application, referring to fig. 1 and 4, the first clamping assembly 5 includes two first clamping plates 51 respectively located at two sides of the sliding rod 32 and first clamping members for driving the two first clamping plates 51 to respectively abut against two sides of the building member. The sliding plate 52 is vertically fixed on one side of the first clamping plate 51, which is close to the sliding rod 32, and the sliding plates 52 on the two first clamping plates 51 are overlapped and slidingly arranged, so that the two sliding plates 52 and the two first clamping plates 51 are combined to form a U-shaped clamping arm, and the opening of the clamping arm faces the direction deviating from the sliding rod 32. A first driving plate 53 with a threaded through hole is vertically fixed on the sliding plate 52 close to the sliding rod 32, the end part of the first driving plate 53 is in sliding contact with the end part of the sliding rod 32, and the sliding plate 52 is also provided with an avoidance groove 7; a second driving plate 54 with a threaded through hole is vertically fixed on the other sliding plate 52, the second driving plate 54 is penetrated and glidingly arranged in the avoidance groove 7, and the top and the bottom of the second driving plate 54 are glidingly attached to the top inner wall and the bottom inner wall of the avoidance groove 7 respectively; the second driving plate 54 slides in the escape groove 7 toward/away from the first driving plate 53, thereby adjusting the distance between the two first clamping plates 51. The first clamping piece is arranged to rotate a bidirectional screw rod 55 arranged at the end part of the protective rod 3, the first driving plate 53 is sleeved at one end of the bidirectional screw rod 55 through a threaded through hole, the second driving plate 54 is sleeved at the other end of the bidirectional screw rod 55 through a threaded through hole, and the length direction of the avoidance groove 7 is consistent with the length direction of the bidirectional screw rod 55. By rotating the bidirectional screw rod 55, the first driving plate 53 and the second driving plate 54 respectively drive the two first clamping plates 51 to move towards the directions close to each other until the two first clamping plates 51 respectively abut against two sides of the building component, so that the end part of the sliding rod 32 is quickly connected with the building component.

In order to rapidly drive the bi-directional screw rod 55 to rotate, referring to fig. 1 and 4, the rocking handle 10 is mounted at the end of the bi-directional screw rod 55, and the bi-directional screw rod 55 can be rapidly rotated with less effort through the rocking handle 10, so that the end of the sliding rod 32 can be rapidly fixed on a corresponding building member. In order to prevent the rocking handle 10 from being mistakenly touched by constructors, the rocking handle 10 is caused to rotate, so that the first clamping assembly 5 cannot be stably connected with a building member, a first locking piece 11 for locking and positioning the rocking handle 10 is arranged on the protection rod 3, the first locking piece 11 is arranged as a sawtooth plate with a plurality of tooth grooves, and the tooth grooves are arranged at intervals along the length direction of the sawtooth plate. One end of the serration plate is rotatably mounted on the side wall of the end of the sliding rod 32 remote from the fixed rod 31, and the tooth slot is engaged with the rocking handle 10. When the rocking handle 10 is required to be locked, only the sawtooth plate needs to be rotated, so that one tooth slot on the sawtooth plate is clamped above the rocking handle 10 through gravity, free rotation of the rocking handle 10 is limited, and the problem that a constructor bumps the rocking handle 10 by mistake to cause rotation of the rocking handle 10 is effectively avoided.

In order to prevent the protection rod 3 from being separated from the building element due to the shortened length, the locking assembly 4 is disposed between the fixing rod 31 and the sliding rod 32, and the locking assembly 4 can lock the sliding rod 32 at any position of the fixing rod 31, referring to fig. 1, 2 and 4. The fixed rod 31 is provided with a chute 2 on the outer wall, the chute 2 is communicated with the jack 1, and the length direction of the chute 2 is consistent with the length direction of the fixed rod 31. The locking assembly 4 comprises a limiting rod 41 fixed on the sliding rod 32 and penetrating and sliding arranged in the sliding chute 2, and a second locking piece positioned on the fixed rod 31 and used for locking the limiting rod 41 at any position of the sliding chute 2; in this embodiment, the second locking member is configured as a locking rod 42, one end of the locking rod 42 is rotatably mounted on the outer wall of the fixing rod 31, a plurality of limiting grooves 43 for being snapped onto the limiting rod 41 are formed at the bottom of the locking rod 42, and the plurality of limiting grooves 43 are disposed at intervals along the length direction of the locking rod 42. By rotating the clamping rod 42, the limiting groove 43 on the clamping rod 42 is buckled on the limiting rod 41 from the upper side of the limiting rod 41, so that the limiting rod 41 is locked in the sliding groove 2, the sliding rod 32 cannot move in the insertion hole 1 of the fixed rod 31 at this time, the length of the protection rod 3 is locked, and then the two second clamping plates 61 at the end part of the protection rod 3 can be stably installed on a building member.

In order to enable the length of the protection rod 3 to be quickly adjusted to be matched with the size of the edge hole, referring to fig. 2, a pushing piece 9 for driving the sliding rod 32 to move away from the fixing rod 31 is arranged in the jack 1 of the fixing rod 31, the pushing piece 9 is set to be a pressure spring, one end of the pressure spring is fixedly connected with the inner wall of the fixing rod 31, the other end of the pressure spring is connected with the sliding rod 32, and the pressure spring is always in a compressed state, so that the pressure spring can push the sliding rod 32 to move away from the fixing rod 31, and automatic extension of the protection rod 3 is realized. In order to prevent the sliding rod 32 from being pushed out of the insertion hole 1 of the fixed rod 31, both ends of the sliding groove 2 on the outer wall of the fixed rod 31 are closed, so that the limiting rod 41 connected with the sliding rod 32 cannot slip off from the sliding groove 2, and the sliding rod 32 is ensured to be always in sliding connection with the insertion hole 1 of the fixed rod 31.

The application provides an installation method of a critical entrance to a cave safety device, adopts following technical scheme:

s1, stretching a tension spring 62 to enable two second clamping plates 61 to respectively abut against two side walls of one side building member, so that one end of a protection rod 3 is temporarily fixed;

s2, the clamping rod 42 is rotated towards the direction away from the limiting rod 41, so that the limiting rod 41 is not clamped with the clamping rod 42 any more, at the moment, the sliding rod 32 drives the first clamping assembly 5 to face a building component on the other side under the driving of the pressure spring, the two first clamping plates 51 are respectively positioned on two sides of the building component, and the end part of the sliding rod 32 is abutted against the building component;

s3, the two-way screw rod 55 is rotated through the rocking handle 10 to drive the two first clamping plates 51 to be close to each other and abut against two sides of the building component, so that the other end of the protection rod 3 is stably installed on the building component;

s4, rotating the clamping rod 42 to enable a limiting groove 43 on the clamping rod 42 to be buckled on the limiting rod 41 from the upper side of the limiting rod 41, so that the limiting rod 41 is locked in the sliding groove 2, at the moment, the sliding rod 32 cannot move in the jack 1 of the fixed rod 31, and the length of the protection rod 3 is locked;

s5, rotating the serration plate, so that one tooth slot on the serration plate is clamped above the rocking handle 10 through gravity, and free rotation of the rocking handle 10 is limited.

The implementation principle of the edge opening safety protection device and the installation method thereof in the embodiment of the application is as follows: the tension spring 62 is stretched first, so that the two second clamping plates 61 respectively abut against the two side walls of one side building member, and one end of the protection rod 3 is temporarily fixed; the clamping rod 42 is rotated in the direction away from the limiting rod 41, so that the limiting rod 41 is not clamped with the clamping rod 42, at the moment, the sliding rod 32 drives the first clamping assembly 5 to face a building component on the other side under the driving of the pressure spring, the two first clamping plates 51 are respectively positioned on two sides of the building component, and the end part of the sliding rod 32 is abutted against the building component; then the two-way screw rod 55 is rotated through the rocking handle 10 to drive the two first clamping plates 51 to be close to each other and abut against two sides of the building component, so that the other end of the protection rod 3 is stably installed on the building component; then the clamping rod 42 is rotated, so that a limiting groove 43 on the clamping rod 42 is buckled on the limiting rod 41 from the upper side of the limiting rod 41, the limiting rod 41 is locked in the sliding groove 2, and at the moment, the sliding rod 32 cannot move in the jack 1 of the fixed rod 31, so that the length of the protection rod 3 is locked; finally, the serrated plate is rotated so that a tooth slot on the serrated plate is clamped above the rocking handle 10 by gravity, thereby limiting the free rotation of the rocking handle 10.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. The utility model provides a face limit entrance to a cave safety device which characterized in that includes

The protection rod is at least provided with two rod pieces, one rod piece is a fixed rod, the other rod piece is a sliding rod, the fixed rod is movably connected with the sliding rod, and the distance between two end faces of the fixed rod and the sliding rod, which are opposite, away from one end, is adjustable; and

the fixing mechanism comprises a first clamping assembly and a second clamping assembly which are respectively arranged at two ends of the protective rod, two ends of the protective rod are respectively connected with building components on two sides of the edge opening through the first clamping assembly and the second clamping assembly, the second clamping assembly comprises two second clamping plates which are respectively arranged at two sides of the protective rod and a tension spring used for connecting the two second clamping plates, a clamping groove used for sliding connection of the two second clamping plates is formed in the end part of the protective rod, two ends of the clamping groove are closed, and when the two second clamping plates are respectively arranged at two sides of the building components, the tension spring is always in a stretching state.

2. The edge opening safety protection device according to claim 1, wherein the first clamping assembly comprises two first clamping plates respectively located at two sides of the protection rod and a first clamping piece for driving the two first clamping plates to respectively abut against two sides of the building member, one side of the first clamping plate, which is close to the protection rod, is vertically fixed with a sliding plate, the two sliding plates are overlapped and slide, the two sliding plates and the two first clamping plates are combined to form a U shape, a first driving plate with a threaded through hole is vertically fixed on the sliding plate, which is close to the protection rod, the end part of the first driving plate is in sliding abutting connection with the end part of the protection rod, an avoidance groove is further formed in the sliding plate, a second driving plate with a threaded through hole is vertically fixed on the other sliding plate, the second driving plate is arranged in the avoidance groove in a penetrating manner, the first clamping piece is arranged to rotate a bidirectional screw rod installed at the end part of the protection rod, the first driving plate is sleeved at one end of the bidirectional screw rod through the threaded through hole, and the second driving plate is sleeved at the other end of the bidirectional screw rod through the threaded through hole.

3. The edge opening safety device according to claim 2, wherein a rocking handle is mounted at the end of the bidirectional screw rod.

4. A bordering tunnel portal safety arrangement as claimed in claim 3, characterized in that the guard bar is provided with a first locking element for locking the rocking handle.

5. The edge opening safety protection device according to claim 1, wherein the end of the fixed rod is provided with a jack for sliding connection of the sliding rod, and the jack is in plug connection fit with the sliding rod.

6. The edge opening safety protection device according to claim 5, wherein the outer wall of the fixing rod is provided with a sliding groove, the sliding groove is communicated with the insertion hole, the length direction of the sliding groove is consistent with the length direction of the fixing rod, a locking component is arranged between the fixing rod and the sliding rod, the locking component can lock the sliding rod at any position of the fixing rod, and the locking component comprises a limiting rod fixed on the sliding rod and penetrating and sliding in the sliding groove and a second locking piece positioned on the fixing rod and used for locking the limiting rod at any position of the sliding groove.

7. The edge opening safety protection device according to claim 6, wherein the second locking member is a clamping rod, one end of the clamping rod is rotatably mounted on the outer wall of the fixing rod, a plurality of limiting grooves for being buckled on the limiting rod are formed in the bottom of the clamping rod, and the limiting grooves are arranged at intervals along the length direction of the clamping rod.

8. The edge opening safety device according to claim 6, wherein the insertion hole on the fixing rod is a non-circular hole.

9. The edge opening safety device according to claim 5, wherein a pushing member for driving the sliding rod to move away from the fixed rod is arranged in the insertion hole of the fixed rod.

10. A method for installing a critical-edge opening safety device, based on the critical-edge opening safety device as claimed in any one of claims 4-9, characterized by comprising the following steps,

stretching the tension spring to enable the two second clamping plates to respectively abut against the two side walls of the building component at one side, so that one end of the protection rod is temporarily fixed;

then unlocking the locking assembly, and adjusting the length of the protective rod to enable the end part of the sliding rod to be abutted against the building component on the other side, wherein the two first clamping plates are respectively positioned on two sides of the building component;

the two-way screw rod is rotated to drive the two first clamping plates to be close to each other and abut against two sides of the building component, so that the other end of the protection rod is stably arranged on the building component;

the sliding rod is locked on the fixed rod by the locking assembly, and the protection rod can stably shield the opening at the building component.