CN218029131U - Opening protection device - Google Patents

Abstract

The application discloses an openable cave entrance protecting device, which relates to the field of building construction protecting devices and comprises a fixed base, wherein a line passing hole and a plurality of mounting holes are formed in the fixed base in a penetrating manner; the wire passing hole is used for plugging the wire passing hole, and the fixing base is further provided with a locking assembly used for locking the cover plate on the fixing base. This application has the effect that makes the unwrapping wire entrance to a cave can be convenient for constructor at any time unwrapping wire when having good protective capacities.

Description

Opening protection device

Technical Field

The application relates to a construction protector field is built in room, especially relates to an open-type entrance to a cave protector.

Background

In the process of house main body construction, a paying-off hole needs to be reserved for paying-off measurement, and the shelterless paying-off hole brings potential safety hazards to constructors, so that shielding protection needs to be carried out on the paying-off hole of a construction site.

The pay-off hole protection can be divided into fixed protection and non-fixed protection, common fixed protection is that a wood purlin covers the pay-off hole, and then mortar is smeared around the wood purlin to fix the wood purlin at the hole; the common non-fixed protection has the fender that encloses that can open and shut on the circumference of unwrapping wire entrance to remind constructor to keep away from the unwrapping wire entrance to a cave.

In view of the above-mentioned related art, the inventors found that the following drawbacks exist: if fixed protection is used, although the safety of a construction site can be effectively guaranteed, the fixed protection needs to be dismounted at any time because the paying-off hole needs to be frequently used for paying off, and the fixed protection needs to be repeatedly protected after the hole is used up, so that the operation is inconvenient; if the non-fixed protection is used, although the paying-off is convenient at the opening, the phenomena of protection falling and opening non-protection are easy to occur, and potential safety hazards are generated.

SUMMERY OF THE UTILITY MODEL

In order to make the unwrapping wire entrance to a cave can be convenient for constructor at any time unwrapping wire when having good protective capacities, this application provides an open-type entrance to a cave protector.

The application provides an open-type entrance to a cave protector adopts following technical scheme:

an openable hole protection device comprises a fixed base, wherein a wire passing hole and a plurality of mounting holes are formed in the fixed base in a penetrating mode; the wire passing hole is used for blocking the wire passing hole, and the fixing base is hinged with a cover plate used for blocking the wire passing hole and is also provided with a locking assembly used for locking the cover plate on the fixing base.

Through adopting above-mentioned technical scheme, use the bolt, steel nail etc. are fixed in the subaerial of unwrapping wire entrance to a cave week side from mounting hole department with fixed baseplate, and keep crossing wire hole and unwrapping wire entrance to a cave intercommunication, when the direction that the unwrapping wire entrance to a cave was kept away from to the apron orientation rotated, it is in open state to cross the wire hole, the constructor of being convenient for is from unwrapping wire entrance to a cave department unwrapping wire, rotate when the apron orientation fixed baseplate, and through the locking subassembly with the apron locking back on fixed baseplate, the apron seals simultaneously and crosses wire hole and unwrapping wire entrance to a cave, keep job site's safety, and then let make the unwrapping wire entrance to a cave can be convenient for constructor at any time unwrapping wire when having good protective capacities.

Optionally, the locking assembly includes an insertion rod slidably connected to the cover plate, a fixed seat is fixedly connected to the fixed base, and a socket adapted to be inserted into the insertion rod is formed in one side of the fixed seat, which is close to the insertion rod; the cover plate is further provided with a limiting structure used for limiting the insertion rod to move towards the direction far away from the fixed seat when the insertion rod is inserted into the fixed seat.

By adopting the technical scheme, the insertion rod slides towards the fixed seat and is inserted into the fixed seat at the insertion opening, the fixed seat limits the rotation of the cover plate, so that the cover plate is kept at the position for shielding the wire passing hole and the wire releasing hole, and the safety of a construction site is kept; when the inserted link slides towards the direction far away from the fixed seat and is separated from the socket, the cover plate rotates to open the wire passing hole and the wire releasing hole, so that construction personnel can release wires conveniently; when the cover plate is limited by the limiting structure to be covered, the direction of the inserted bar far away from the fixed seat is certain, and the inserted bar is prevented from being separated from the socket as far as possible.

Optionally, the inserted link rotates around its axial direction and is set up in on the apron, limit structure includes along the radial rigid coupling of inserted link in the driving lever of inserted link cambered surface lateral wall, on the apron in one side rigid coupling of inserted link has the stopper, set up on the stopper and be used for the male spacing groove of driving lever, work as the inserted link peg graft in when the fixing base, the driving lever peg graft in the spacing groove.

Through adopting above-mentioned technical scheme, handheld driving lever is convenient for remove the inserted bar, simultaneously, when inserting the inserted bar into the fixing base, insert the driving lever spacing inslot with the driving lever after rotating the driving lever, has restricted the driving lever in the removal of inserted bar length direction through the spacing groove cell wall, and then has restricted the inserted bar and has moved towards/keep away from the fixing base, avoids the inserted bar to deviate from the socket as far as possible.

Optionally, the driving lever includes base lever and movable rod, the movable rod is followed the axial elasticity of base lever set up in the base lever is kept away from the one end of inserted bar, run through on the stopper set up with the draw-in groove of movable rod grafting adaptation, the draw-in groove with the spacing groove intercommunication sets up, still be provided with on the movable rod be used for its joint in joint subassembly on the stopper.

Through adopting above-mentioned technical scheme, after the driving lever inserted the spacing groove, in the pulling movable rod made its inlay card draw-in groove, worn out the draw-in groove until the movable rod, at this moment with the movable rod joint on the stopper under the effect of joint subassembly, advance a pair of driving lever and fix, restricted the rotation of driving lever through the draw-in groove cell wall, and then restricted the movable rod and removed.

Optionally, a placing groove is formed in the side wall of the movable rod, the clamping assembly comprises a spring with one end fixedly connected to the bottom wall of the placing groove, a fixture block matched with the placing groove in an inserting mode is fixedly connected to the free end of the spring, and when the spring is in a natural state, the fixture block extends out of the placing groove.

Through adopting above-mentioned technical scheme, when the draw-in groove was worn out to the movable rod, the standing groove was stretched out to the fixture block under the effect of spring, and elasticity this moment set up the movable rod resilience on the base lever and order about fixture block butt in the stopper, with the movable rod joint on the stopper, restricted the driving lever around the length direction rotation of inserted bar, and then restricted the removal of inserted bar, will lap the locking on fixed baseplate, ensured job site's safety.

Optionally, a plurality of telescopic links are fixedly connected to the fixed base, a plurality of annular grooves are formed in the outer side wall of each telescopic link at intervals along the length direction of the telescopic link, and a locking structure used for fixing the telescopic links in an extending state is arranged on each telescopic link.

Through adopting above-mentioned technical scheme, make the telescopic link be in behind the extension state make it keep in the extension state through locking structure, twine markers such as warning rope, warning area on a plurality of telescopic links in proper order from ring groove again to surround the apron, play the warning effect, in order to avoid constructor to be close to unwrapping wire entrance to a cave department.

Optionally, the telescopic rod includes a fixing rod fixedly connected to the fixing base and a lifting rod connected to the fixing rod in a sliding manner along the length direction of the fixing rod, the locking structure includes a first perforation provided at one end of the fixing rod close to the lifting rod, a second perforation provided at one end of the lifting rod close to the fixing rod, and a bolt, and when the first perforation and the second perforation are communicated, the bolt is jointly inserted into the first perforation and the second perforation.

Through adopting above-mentioned technical scheme, move up the lifter to first perforation and second perforation intercommunication, make the bolt peg graft in first perforation and second perforation jointly this moment, can restrict the lifter and move down, make the telescopic link keep in the extension state, the simple operation.

Optionally, a third through hole is formed in one end, away from the fixing rod, of the lifting rod, and when the first through hole is communicated with the third through hole, the plug pin is jointly inserted into the first through hole and the third through hole.

Through adopting above-mentioned technical scheme, when moving down the lifter to first perforation and third perforation intercommunication, peg graft the bolt in first perforation and third perforation jointly, can make the removal of restriction lifter, reduce the holistic length of lifter, the holistic removal of the fixed baseplate of being convenient for.

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

1. the fixing base is fixed on the ground on the periphery of the pay-off hole from the mounting hole by using bolts, steel nails and the like, the wire passing hole is communicated with the pay-off hole, when the cover plate rotates towards the direction far away from the pay-off hole, the wire passing hole is in an open state, construction personnel can pay off wires from the pay-off hole conveniently, when the cover plate rotates towards the fixing base and is locked on the fixing base through the locking assembly, the cover plate simultaneously seals the wire passing hole and the pay-off hole, the safety of a construction site is kept, and the pay-off hole has good protection capability and can be conveniently paid off wires by the construction personnel at any time;

2. make the telescopic link be in after the extension state make it keep in the extension state through locking structure, twine markers such as warning rope, warning area on a plurality of telescopic links in proper order from ring groove department again to surround the apron, play the warning effect, in order to avoid constructor to be close to unwrapping wire entrance to a cave department.

Drawings

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

Fig. 2 is a schematic structural diagram mainly used for showing a locking assembly in the embodiment of the application.

Fig. 3 is a schematic sectional structure view mainly used for showing the telescopic rod in the embodiment of the present application.

Reference numerals are as follows: 1. a fixed base; 11. a wire passing hole; 12. mounting holes; 2. a cover plate; 3. a locking assembly; 31. inserting a rod; 32. a slide base; 33. a fixed seat; 331. a socket; 34. a limiting structure; 341. a deflector rod; 3411. a base shaft; 3412. an elastic cord; 3413. a movable rod; 342. a limiting block; 343. a limiting groove; 344. a card slot; 345. a clamping assembly; 3451. a placement groove; 3452. a spring; 3453. a clamping block; 4. a telescopic rod; 41. a ring groove; 42. fixing the rod; 43. a lifting rod; 44. a locking structure; 441. a first through hole; 442. a second perforation; 443. a third perforation; 444. and (4) a bolt.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses an openable type hole protecting device. Referring to fig. 1, the openable hole protection device comprises a fixed base 1 arranged at a pay-off hole, a wire passing hole 11 communicated with the pay-off hole is formed in the fixed base 1 in a penetrating manner, a cover plate 2 used for opening and closing the wire passing hole 11 is rotatably arranged on the fixed base 1, and a locking assembly 3 used for locking the cover plate 2 on the fixed base 1 is further arranged on the fixed base 1; when the cover plate 2 is closed, the paying-off hole is closed, the safety of a construction site is kept, and when the paying-off hole is opened by the cover plate 2, a constructor can pay off the cable from the paying-off hole conveniently.

Specifically, referring to fig. 1, the cross section of the fixing base 1 is square, the wire passing hole 11 is also a square hole, and the aperture of the wire passing hole 11 is larger than the aperture of the pay-off hole, so that the pay-off is facilitated for constructors. Fixing base 1 all runs through from individual edge and has seted up mounting hole 12, penetrates the building body from mounting hole 12 with bolt, steel nail etc. can accomplish fixing base 1's installation, avoids fixing base 1 to take place the displacement and leads to the unwrapping wire entrance to a cave to open.

The cover plate 2 in the embodiment of the application is correspondingly a square plate, the cover plate 2 is hinged on the fixed base 1 through a hinge, and the area of the plate of the cover plate 2 is larger than the aperture of the wire through hole 11 so as to ensure the tightness of the protection of the cover plate 2; meanwhile, the cover plate 2 and the fixed base 1 can be galvanized steel plates, iron plates or multilayer plates, so that the supporting strength of the fixed base 1 and the cover plate 2 is ensured, the cover plate 2 is prevented from being bent or collapsed after being stressed, and the safety and reliability of the protection of the cover plate 2 are further ensured.

When the cover plate 2 is covered on the fixed base 1, the cover plate 2 needs to be locked on the fixed base 1 through the locking assembly 3, so that the cover plate 2 is prevented from being mistakenly rotated to expose the paying-off hole. With reference to fig. 2, the locking assembly 3 includes an insertion rod 31 slidably connected to the cover plate 2 and a fixing seat 33 fixedly connected to the fixing base 1.

Specifically, the inserted link 31 is a round link, and the sliding direction of the inserted link 31 is perpendicular to the hinge axis of the cover plate 2; apron 2's up end rigid coupling has slide 32, the rigid coupling has fixing base 33 on the fixed baseplate 1, slide 32 includes two omega shape sheetmetals that set up along the glide direction interval of inserted bar 31, the equal rigid coupling in the both ends of sheetmetal sets up in the middle part of apron 2 and sheetmetal and apron 2 interval for the slide that can supply inserted bar 31 to slide is formed naturally between sheetmetal and apron 2, and the slide 32 that two sheetmetals constitute has carried out the direction to sliding of inserted bar 31.

The shape of the fixing seat 33 is the same as that of the metal sheet, so that a socket 331 for inserting the insertion rod 31 is naturally formed between the fixing seat 33 and the fixing base 1; fixing base 33 and slide 32 collineation setting, when sliding the direction of fixing base 33 with inserted bar 31 and making inserted bar 31 peg graft in socket 331, the one end that fixed base 33 was kept away from to inserted bar 31 still pegs graft in slide 32, because the restriction of socket 331 mouth wall makes inserted bar 31 unable rotation around the axis of rotation of apron 2 this moment, thereby has restricted apron 2 rotation, with apron 2 locking on fixed baseplate 1, closed the unwrapping wire entrance to a cave.

A shift lever 341 is further fixed to an end of the outer side wall of the arc surface of the insertion rod 31 away from the fixing seat 33, in this embodiment, the shift lever 341 is also a round rod. After the shifting lever 341 is rotated to make the axis of the shifting lever 341 form an included angle with the surface of the cover plate 2, the shifting lever 341 is moved to conveniently drive the inserting rod 31 to slide, so as to open and close the cover plate 2.

Further, in order to avoid that the plug rod 31 is touched by mistake and the plug rod 31 is separated from the fixing seat 33, so that the cover plate 2 may be opened by mistake, with reference to fig. 2, the cover plate 2 is further provided with a limiting structure 34 for limiting the plug rod 31 to move away from the fixing seat 33 when the plug rod 31 is plugged in the fixing seat 33.

Specifically, limit structure 34 includes driving lever 341 and the stopper 342 of rigid coupling in inserted bar 31 one side, and the stopper 342 is close to the one end of inserted bar 31 and has seted up the spacing groove 343 with the driving lever 341 grafting adaptation, and the spacing groove 343 runs through the stopper 342 and keeps away from one side of apron 2, and simultaneously in order to facilitate processing, the spacing groove 343 in this application embodiment is the rectangular channel.

The shift lever 341 is rotated to make the shift lever 341 axially vertical and then move the shift lever 341 toward the fixing seat 33 until the insertion rod 31 is inserted into the fixing seat 33, and at this time, the shift lever 341 is rotated toward the limiting block 342 to insert the shift lever 341 into the limiting groove 343. Meanwhile, due to the limitation of the groove wall of the limiting groove 343, the shift lever 341 inserted into the limiting groove 343 is difficult to move along the sliding direction of the insertion rod 31, so that the insertion rod 31 inserted into the fixing seat 33 is difficult to slide, and the cover plate 2 can be stably covered on the fixing base 1.

In order to further restrict the axial rotation of the shift lever 341 inserted into the stopper groove 343 about the insertion rod 31, with continued reference to fig. 2, the shift lever 341 in the present embodiment includes a base rod 3411 fixed to the insertion rod 31 and a movable rod 3413 elastically provided on the base rod 3411 in the axial direction of the base rod 3411.

Specifically, an insertion groove is formed at an end of the base rod 3411 away from the insertion rod 31, an elastic rope 3412 is fixedly connected to a bottom wall of the insertion groove, a movable rod 3413 is fixedly connected to a telescopic end of the elastic rope 3412, and when the elastic rope 3412 is in a natural state, the movable rod 3413 and an end of the base rod 3411 close to each other abut against each other.

Meanwhile, a clamping groove 344 is formed in one end, far away from the insertion rod 31, of the limiting block 342 in a penetrating mode, the clamping groove 344 is communicated with the limiting groove 343, and the clamping groove 344 is in splicing fit with the movable rod 3413. The movable rod 3413 is provided with a clamping assembly 345 for clamping the movable rod to one end of the limiting block 342 far away from the insertion rod 31, when the shift lever 341 is inserted into the limiting groove 343, the movable rod 3413 is pulled towards the direction far away from the insertion rod 31 and penetrates out of the clamping groove 344, the movable rod 3413 is clamped to the limiting block 342 under the action of the clamping assembly 345, and at this time, the rotation of the movable rod 3413 is limited through the groove wall of the clamping groove 344, namely, the rotation of the shift lever 341 is limited.

Specifically, with reference to fig. 2, a placing groove 3451 is formed in one side of the movable rod 3413 away from the fixing seat 33, the clamping component 345 includes a spring 3452 having one end fixedly connected to the bottom wall of the placing groove 3451, a clamping block 3453 adapted to be inserted into the placing groove 3451 is fixedly connected to the telescopic end of the spring 3452, and the clamping block 3453 in this embodiment is a rectangular block.

When the spring 3452 is in a normal state, the block 3453 does not completely extend out of the placement groove 3451, and when the spring 3452 is in a compressed state, the block 3453 is located in the placement groove 3451; after the clamping block 3453 is pressed to accommodate the clamping block 3453 in the placing groove 3451, the movable rod 3413 can be pulled or pushed to move towards the clamping groove 344, after the clamping block 3453 passes through the clamping groove 344, the clamping block 3453 extends out of the placing groove 3451 under the action of the spring 3452 and abuts against one side of the limiting block 342 away from the shift lever 341, and meanwhile, the clamping block 3453 abuts against the limiting block 342 under the action of the elastic rope 3412, so that the movable rod 3413 is clamped to the limiting block 342, and the rotation of the movable rod 3413 is limited.

When the fastening block 3453 is fastened to the stopper 342, the fastening block 3453 is driven to move toward the fixing base 33 to compress the spring 3452 and the fastening block 3453 is retracted into the placement groove 3451, but since the activity of the constructor on the cover plate 2 is mostly to step on the cover plate 2, i.e. the fastening block 3453 is pressed vertically downwards, even if the constructor is close to the cover plate 2, the fastening block 3453 is not easily touched to disengage the fastening block 3453 from the stopper 342, so that the rotation of the shift lever 341 and the sliding of the insertion rod 31 are limited by the fastening block 3453, and finally the cover plate 2 is stably covered on the fixing base 1 and closes the opening of the wire releasing hole, and the fastening block 3453 is pressed to unlock, so that the constructor can open the cover plate 2 when releasing the wire.

Furthermore, since the cover plate 2 has a limited load-bearing capacity, even if the pay-off opening is closed by the cover plate 2, if a constructor steps on the cover plate 2 when carrying a heavy object, the cover plate 2 may be bent so that the cover plate 2 is not conveniently opened or a potential safety hazard is generated.

Therefore, referring to fig. 1 and fig. 3, the four corners of the fixing base 1 are all fixedly connected with the telescopic rods 4, the connecting line of the four telescopic rods 4 is square, and the four telescopic rods 4 surround the cover plate 2 and the fixing seat 33 in the connecting line. The telescopic rod 4 comprises a fixed rod 42 fixedly connected on the fixed base 1, the fixed rod 42 is a hollow round rod, the axial direction of the fixed rod is perpendicular to the fixed base 1, a hollow part of the fixed rod 42 is connected with a lifting rod 43 in a sliding mode, and the lifting rod 43 comprises a big head end matched with the hollow part of the fixed rod 42 in a sliding mode and a small head end extending out of the fixed rod 42.

When the big end of the lifting rod 43 slides to the direction away from the fixed base 1 and abuts against the fixed rod 42, the telescopic rod 4 is in a stretching state, and the fixed rod 42 is further provided with a locking structure 44 for locking the lifting rod 43 on the fixed rod 42 at this time.

Referring to fig. 3, the locking structure 44 includes a first through hole 441 disposed at an upper end of the outer side wall of the arc surface of the fixing rod 42, the first through hole 441 penetrates through the rod wall of the fixing rod 42, and two of the first through holes 441 are disposed at two opposite positions; the two opposite positions of the outer side wall of the arc surface at the large end of the lifting rod 43 are provided with second through holes 442, when the telescopic rod 4 is in a stretching state, the first through hole 441 and the second through hole 442 are communicated, the fixing rod 42 is inserted with two corresponding bolts 444, and the bolts 444 penetrate through the first through hole 441 and then extend into the second through hole 442, so as to limit the lifting rod 43 to move downwards.

A plurality of annuluses 41 have been seted up along its length direction equal interval to the cambered surface outer wall of dead lever 42 and lifter 43, will warn rope, warning area etc. from 41 departments of annuluses and surround on four telescopic links 4, can form and enclose the fender, play warning and protection to apron 2 department, avoid constructor to trample apron 2 as far as possible.

Furthermore, a third through hole 443 is disposed at two opposite positions of one end of the lifting rod 43 away from the fixed base 1, when the lifting rod 43 moves down to be in a contracted state, the first through hole 441 is in a communication state with the third through hole 443, and the plug pin 444 extends into the third through hole 443 from the first through hole 441, so as to limit the lifting rod 43 from rising, reduce the length of the retractable rod 4, and facilitate a worker to open the cover plate 2 and perform a paying-off operation at the paying-off hole.

The implementation principle of the openable hole protection device in the embodiment of the application is as follows: by arranging the fixed base 1 and the cover plate 2, when the cover plate 2 covers the fixed base 1, the cover plate 2 seals the pay-off hole to keep the safety of a construction site, and when the cover plate 2 is rotated to open the pay-off hole, constructors can conveniently complete pay-off operation from the pay-off hole; the cover plate 2 is locked on the fixed base 1 through the matching of the inserting rod 31, the shifting rod 341, the fixed seat 33 and the limiting block 342, so that the opening of a pay-off hole and potential safety hazards caused by the mistaken opening of the cover plate 2 are avoided, the shifting rod 341 is rotated after the clamping block 3453 is pressed, the cover plate 2 can be rotated to open the pay-off hole after the sliding shifting rod 341 drives the inserting rod 31 to slide to be separated from the fixed seat 33, and the operation is convenient and fast; through setting up telescopic link 4, cooperation warning area etc. can enclose the fender to 2 departments production of apron, as far as possible and avoid constructor to be close to 2 departments of apron.

The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. An open-type entrance to a cave protector which characterized in that: the wire passing device comprises a fixed base (1), wherein a wire passing hole (11) and a plurality of mounting holes (12) are formed in the fixed base (1) in a penetrating manner; the wire passing hole (11) is hinged to a cover plate (2) used for blocking the wire passing hole, and a locking assembly (3) used for locking the cover plate (2) on the fixing base (1) is further arranged on the fixing base (1).

2. An openable aperture guard according to claim 1, wherein: the locking assembly (3) comprises an insertion rod (31) connected to the cover plate (2) in a sliding mode, a fixed base (33) is fixedly connected to the fixed base (1), and a socket (331) matched with the insertion rod (31) in an insertion mode is formed in one side, close to the insertion rod (31), of the fixed base (33); the cover plate (2) is further provided with a limiting structure (34) used for limiting the insertion rod (31) to move towards the direction far away from the fixed seat (33) when the insertion rod (31) is inserted into the fixed seat (33).

3. An openable aperture guard according to claim 2, wherein: the inserted link (31) is arranged on the cover plate (2) in a rotating mode around the axial direction of the inserted link (31), the limiting structure (34) comprises a shifting rod (341) which is fixedly connected to the outer side wall of the cambered surface of the inserted link (31) along the radial direction of the inserted link (31), a limiting block (342) is fixedly connected to one side of the inserted link (31) on the cover plate (2), a limiting groove (343) for inserting the shifting rod (341) is formed in the limiting block (342), and when the inserted link (31) is connected to the fixing seat (33) in an inserting mode, the shifting rod (341) is connected to the limiting groove (343) in an inserting mode.

4. An openable aperture guard according to claim 3, wherein: the shifting lever (341) comprises a base rod (3411) and a movable rod (3413), the movable rod (3413) is arranged at one end, far away from the inserting rod (31), of the base rod (3411) along the axial elasticity of the base rod (3411), a clamping groove (344) matched with the movable rod (3413) in an inserting mode is formed in the limiting block (342) in a penetrating mode, the clamping groove (344) is communicated with the limiting groove (343), and a clamping assembly (345) used for clamping the movable rod (3413) to the limiting block (342) is further arranged on the movable rod (3413).

5. An openable aperture guard according to claim 4, wherein: a placing groove (3451) is formed in the side wall of the movable rod (3413), the clamping assembly (345) comprises a spring (3452) with one end fixedly connected to the bottom wall of the placing groove (3451), a clamping block (3453) in plug fit with the placing groove (3451) is fixedly connected to the free end of the spring (3452), and when the spring (3452) is in a natural state, the clamping block (3453) extends out of the placing groove (3451).

6. An openable hole guard according to any one of claims 1 to 5, wherein: the fixed baseplate (1) is fixedly connected with a plurality of telescopic rods (4), the outer side wall of each telescopic rod (4) is provided with a plurality of annular grooves (41) at intervals along the length direction of the outer side wall, and the telescopic rods (4) are provided with locking structures (44) for fixing the telescopic rods in an extended state.

7. An openable opening protector according to claim 6, further comprising: the telescopic rod (4) comprises a fixing rod (42) fixedly connected to the fixing base (1) and a lifting rod (43) connected to the fixing rod (42) in a sliding mode along the length direction of the fixing rod (42), the locking structure (44) comprises a first through hole (441) formed in one end, close to the lifting rod (43), of the fixing rod (42), a second through hole (442) formed in one end, close to the fixing rod (42), of the lifting rod (43) and a bolt (444), and when the first through hole (441) is communicated with the second through hole (442), the bolt (444) is jointly inserted into the first through hole (441) and the second through hole (442).

8. An openable aperture guard according to claim 7, wherein: a third through hole (443) is formed in one end, away from the fixing rod (42), of the lifting rod (43), and when the first through hole (441) is communicated with the third through hole (443), the plug pin (444) is commonly inserted into the first through hole (441) and the third through hole (443).

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