CN217080052U

CN217080052U - Reinforced concrete double-leaf protective airtight door

Info

Publication number: CN217080052U
Application number: CN202220830641.XU
Authority: CN
Inventors: 唐春花
Original assignee: Sichuan Xinwang Civil Air Defense Equipment Co ltd
Current assignee: Sichuan Xinwang Civil Air Defense Equipment Co ltd
Priority date: 2022-04-12
Filing date: 2022-04-12
Publication date: 2022-07-29
Anticipated expiration: 2032-04-12

Abstract

The utility model relates to a reinforced concrete two-leaf protective airtight door belongs to protective equipment's technical field, and reinforced concrete two-leaf protective airtight door includes two door leafs, one of them slide on the door leaf and be provided with the movable plate, set up the spout with movable plate sliding fit on the door leaf, be provided with the screw rod in the spout, the thread bush is equipped with the screw thread sleeve on the screw rod, screw thread sleeve's one end and movable plate rotate to be connected, set up the oil storage chamber that is used for storing lubricating oil in the screw thread sleeve, a plurality of oil outlets have been seted up to one side that the oil storage chamber is close to the screw rod, it has the board of opening and close that is used for opening and close to open and close the oil outlet to articulate on the diapire in oil storage chamber, open and close board and oil outlet one-to, be provided with on the screw thread sleeve and be used for making to open and close the board orientation and close or keep away from the subassembly of opening and close of direction pivoted of oil outlet. The application has the effect of saving manpower to a certain extent.

Description

Reinforced concrete double-leaf protective airtight door

Technical Field

The application relates to the technical field of protective equipment, in particular to a reinforced concrete double-leaf protective airtight door.

Background

The protective airtight door is a protective door which is arranged on the outermost side of the entrance and the exit and is provided with a function of blocking shock waves and isolating toxic agents. Divide into single fan civil air defense door and biparting civil air defense door according to door leaf quantity, and protective airtight door is reinforced concrete door usually, has the advantage of low price.

In the related art, for example, chinese patent publication No. CN209510094U discloses a reinforced concrete double-leaf protective airtight door, which comprises a door frame and two door leaves matching with the door frame, wherein two sides of the door frame are rotatably connected with rotating shafts, the rotating shafts are connected with the corresponding door leaves, sliding connection has the movable plate on the lateral surface of one of them door leaf, fixedly connected with fixed plate on the lateral surface that the pivot was kept away from to another door leaf, a plurality of lugs of fixedly connected with on the lateral wall that the movable plate is close to the fixed plate, the recess that matches with the lug is seted up to the position department that the fixed plate corresponds the lug, the spout has been seted up on the door leaf, the spout internal rotation is equipped with the lead screw, be equipped with the slider on the movable plate, lead screw and slider threaded connection, the cover is equipped with first bevel gear on the lead screw, the spout internal rotation is connected with the bull stick, fixedly connected with carousel on the bull stick, the second bevel gear who meshes with first bevel gear mutually is fixed cup jointed on the pole wall of bull stick. And the turntable is rotated to enable the second bevel gear to drive the first bevel gear to rotate, so that the screw rod is rotated, the lug and the groove are clamped or separated, and the protective door is locked or opened.

In view of the above-mentioned related arts, the inventors found that the transmission between the first bevel gear and the second bevel gear, and the threaded connection between the lead screw and the slider are rusted when not used for a long time, and it is difficult to rotate the rotating rod manually.

SUMMERY OF THE UTILITY MODEL

For saving the manpower to a certain extent, this application provides reinforced concrete double-leaf protective airtight door.

The application provides a reinforced concrete two-leaf protective airtight door adopts following technical scheme:

reinforced concrete two leaf protective airtight door, including two door leafs, one of them slide on the door leaf and be provided with the movable plate, set up on the door leaf with movable plate sliding fit's spout, be provided with the screw rod in the spout, threaded sleeve is equipped with the screw sleeve on the screw rod, screw sleeve's one end and movable plate rotate to be connected, set up the oil storage chamber that is used for storing lubricating oil in the screw sleeve, a plurality of oil outlets have been seted up to one side that the oil storage chamber is close to the screw rod, it has the board of opening and close that is used for opening and close the oil outlet to articulate on the diapire in oil storage chamber, open and close board and oil outlet one-to-one, be provided with on the screw sleeve and be used for making to open and close the board orientation and be close or keep away from the orientation pivoted subassembly of opening and close of oil outlet.

By adopting the technical scheme, the plurality of opening and closing plates slide towards the direction far away from the oil outlet through the opening and closing assembly, the oil outlet is opened, the lubricating oil in the oil storage cavity is sprayed onto the screw rod through the oil outlet, and then the screw rod and the threaded sleeve are lubricated, so that a worker can rotate the threaded sleeve to drive the movable plate to slide, and the labor is saved to a certain extent; the opening and closing plate rotates towards the direction close to the oil storage cavity to open the oil outlet hole, the opening and closing plate is not easy to abut against the screw rod, and the outflow effect of lubricating oil is good.

Preferably, the subassembly of opening and close includes the action bars of slip on the screw sleeve, sets up mounting and the driving medium of setting in the oil storage intracavity on the action bars, the telescopic length direction of slip direction perpendicular to screw sleeve of action bars, the one end of action bars extends to the oil storage intracavity, and the other end extends outside screw sleeve, the mounting is used for making action bars and screw sleeve relatively fixed, the driving medium is used for making the action bars drive a plurality of boards that open and close and rotate in order to open or seal the oil outlet, works as when the action bars orientation was kept away from screw sleeve's direction slip, it rotates to open and close the direction that the oil outlet was kept away from to the board orientation.

Through adopting above-mentioned technical scheme, make the action bars orientation be close to or keep away from the direction slip of threaded sleeve, through the mounting with action bars and threaded sleeve relatively fixed, make the action bars drive a plurality of opening and closing board orientation and be close to or keep away from the direction rotation of oil outlet through the driving medium to the realization is to the sealing of oil outlet or open, is favorable to making the lubricating oil in the oil storage intracavity flow to the screw rod on, and then the workman of being convenient for rotates threaded sleeve, is favorable to using manpower sparingly.

Preferably, it is a plurality of the range direction of oil outlet is on a parallel with threaded sleeve's length direction, the driving medium is including sliding the transfer line in the oil storage cavity and articulating a plurality of connecting rods that are close to oil outlet one side at the transfer line, the slip direction of transfer line is on a parallel with the slip direction of action bars, the one end and the transfer line that the action bars is located the oil storage cavity are connected, the length direction of transfer line is on a parallel with the range direction of a plurality of oil outlet, the connecting rod with open and close board one-to-one, the one end that the transfer line was kept away from to the connecting rod is articulated with the board that opens and close that corresponds.

Through adopting above-mentioned technical scheme, the orientation is close to or keeps away from the telescopic direction slip action bars of screw thread, through the mounting with action bars and screw thread sleeve relatively fixed, the action bars drives the transfer line and slides towards the orientation that is close to or keeps away from the oil outlet in the oil storage intracavity, drive the opening and closing board orientation that corresponds through the connecting rod and be close to or keep away from the direction rotation of oil outlet, thereby realize closing or opening of oil outlet, help making the lubricating oil flow to the screw rod on, the telescopic rotation of screw thread of being convenient for, the manpower is saved to a certain extent.

Preferably, offer on the threaded sleeve and be used for supplying the gliding operation mouth of action bars, operation mouth and oil storage chamber intercommunication, the mounting is including setting up the external screw thread on the action bars and setting up the internal thread on the operation mouth inner wall, screw-thread fit between external screw thread and the internal thread, swivelling joint between action bars and the transfer line.

Through adopting above-mentioned technical scheme, rotate the action bars for the action bars orientation is close to or keeps away from the direction slip of threaded sleeve, realizes the relative fixation between action bars and the threaded sleeve through the auto-lock between external screw thread and the internal thread.

Preferably, the operating rod is provided with an oil inlet, the oil inlet runs through the two ends of the operating rod along the length direction of the operating rod, the oil inlet is communicated with the oil storage cavity, and one end, far away from the threaded sleeve, of the operating rod is provided with a rubber plug used for opening and closing the oil inlet.

Through adopting above-mentioned technical scheme, take off the rubber buffer from the oil inlet, can add lubricating oil to the oil storage intracavity to supply lubricating oil to the oil storage intracavity.

Preferably, the side that opens and close the board and be close to the oil outlet is provided with the sealed pad that is used for strengthening the leakproofness between opening and closing board and the oil storage chamber diapire, sealed pad sets up along the circumference of opening and closing the board.

Through adopting above-mentioned technical scheme, sealed setting up of filling up has strengthened the leakproofness of opening between board and the oil storage chamber diapire for lubricating oil is difficult for taking place unnecessary and reveals.

Preferably, the transmission rod is provided with a guide block, and the inner wall of the oil storage cavity is provided with a guide groove in sliding fit with the guide block.

Through adopting above-mentioned technical scheme, sliding fit between guide block and the guide way leads for the slip of transfer line, helps improving the slip effect of transfer line, and the transfer line of being convenient for simultaneously drives a plurality of boards of opening and close and rotates through the connecting rod.

Preferably, an oil receiving groove for receiving lubricating oil dripping from the threaded sleeve and the screw is formed in the inner wall of the sliding groove.

Through adopting above-mentioned technical scheme, lubricating oil on screw rod and the threaded sleeve drips to connecing in the oil groove, can retrieve lubricating oil, reduces the possibility that lubricating oil drips to ground and causes accident simultaneously.

To sum up, the application comprises the following beneficial technical effects:

rotate the action bars, the action bars orientation is kept away from the direction of threaded sleeve and is slided, the action bars drives the transfer line and slides towards the direction of keeping away from the oil outlet in the oil storage intracavity, drive the orientation of opening and close the board orientation of correspondence through the connecting rod and keep away from the oil outlet and rotate, thereby realize opening of oil outlet, lubricating oil in the oil storage intracavity drenches to the screw rod on through the oil outlet, and then lubricate between screw rod and the threaded sleeve, so that the workman rotates the threaded sleeve and drives the movable plate and slide, save the manpower to a certain extent.

Drawings

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

Fig. 2 is a partial structural sectional view of an embodiment of the present application, which is mainly used for showing an internal structure of a threaded sleeve.

Fig. 3 is an enlarged view of a portion a in fig. 2.

Fig. 4 is an enlarged view of a portion B in fig. 2.

Description of reference numerals: 1. a door leaf; 2. moving the plate; 3. a chute; 4. a screw; 5. a threaded sleeve; 6. an oil storage chamber; 7. an oil outlet hole; 8. a shutter plate; 9. an opening and closing assembly; 91. an operating lever; 92. a fixing member; 921. an external thread; 922. an internal thread; 93. a transmission member; 931. a transmission rod; 932. a connecting rod; 10. an operation port; 11. an oil inlet; 12. a rubber plug; 13. a gasket; 14. a guide block; 15. a guide groove; 16. an oil receiving groove; 17. a slider; 18. a fixing plate; 19. a hand wheel; 20. and (4) anti-skid lines.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses reinforced concrete double-leaf protective airtight door. Referring to fig. 1, the reinforced concrete double-leaf protective airtight door comprises two door leaves 1, wherein a moving plate 2 is arranged on one door leaf 1 in a sliding manner, a sliding block 17 is fixedly connected to one side of the moving plate 2 close to the door leaf 1, a sliding groove 3 in sliding fit with the sliding block 17 is formed in the door leaf 1, the sliding direction of the moving plate 2 is perpendicular to the height direction of the door leaf 1, a fixing plate 18 in clamping fit with the moving plate 2 is fixedly connected to the other door leaf 1, a screw rod 4 is fixedly connected to the inside of the sliding groove 3, two ends of the screw rod 4 are respectively fixedly connected to the inner walls opposite to the sliding groove 3, the length direction of the screw rod 4 is parallel to the sliding direction of the moving plate 2, a threaded sleeve 5 is sleeved on the screw rod 4 in a threaded manner, one end of the threaded sleeve 5 close to the fixing plate 18 is rotatably connected with the sliding block 17 through a bearing, the sliding block 17 is sleeved on the screw rod 4 in a sliding manner, and anti-slip threads 20 are fixed on the threaded sleeve 5, so that the worker can turn the threaded sleeve 5.

Referring to fig. 2 and 3, an oil storage chamber 6 for storing lubricating oil is formed in the threaded sleeve 5, the cross section of the oil storage chamber 6 is rectangular, a plurality of oil outlets 7 are formed in the bottom wall of the oil storage chamber 6 close to one side of the screw rod 4, the arrangement direction of the oil outlets 7 is parallel to the length direction of the threaded sleeve 5, an opening and closing plate 8 for opening and closing the oil outlets 7 is hinged to the bottom wall of the oil storage chamber 6, the opening and closing plate 8 corresponds to the oil outlets 7 one by one, the opening and closing plate 8 is located above the oil outlets 7, the cross section area of the opening and closing plate 8 is larger than that of the oil outlets 7, the hinge axis of the opening and closing plate 8 is perpendicular to the length direction of the threaded sleeve 5, an opening and closing assembly 9 for enabling the opening and closing plate 8 to rotate towards the direction close to or far away from the oil outlets 7 is arranged on the threaded sleeve 5, a sealing gasket 13 for enhancing the sealing performance between the opening and closing plate 8 and the bottom wall of the oil storage chamber 6 is bonded to one side of the opening and closing plate 8 close to the oil outlets 7, the sealing gasket 13 is arranged along the circumference of the opening and closing plate 8, in this embodiment, the sealing gasket 13 is a rubber gasket, in other embodiments, the rubber gasket is replaced by a plastic gasket, and the arrangement of the sealing gasket 13 helps to reduce the possibility of unnecessary leakage of the lubricating oil in the oil storage chamber 6.

Referring to fig. 1, an oil receiving groove 16 for receiving lubricating oil dripping from the threaded sleeve 5 and the threaded rod 4 is formed in the inner wall of the chute 3, and the oil receiving groove 16 is located below the threaded rod 4 and the threaded sleeve 5.

When the movable plate 2 needs to slide, the opening and closing assemblies 9 enable the opening and closing plates 8 to rotate towards the direction far away from the oil outlet 7, so that the oil outlet 7 is opened, lubricating oil in the oil storage cavity 6 is sprayed to the threaded connection part of the screw rod 4 and the threaded sleeve 5 through the oil outlet 7, the outflow effect is good, the lubricating oil lubricates the screw rod 4, then the threaded sleeve 5 is rotated, the threaded sleeve 5 drives the sliding block 17 and the movable plate 2 to slide, and after the screw rod 4 is lubricated, workers can rotate the threaded sleeve 5, and manpower is saved to a certain extent; surplus lubricating oil on the screw rod 4 and the threaded sleeve 5 drips into the oil receiving groove 16, so that the lubricating oil can be recovered conveniently, and the possibility of accidents caused by dripping of the lubricating oil on the ground is reduced.

Referring to fig. 2 and 3, the opening and closing assembly 9 includes an operating rod 91 sliding on the threaded sleeve 5, a fixing member 92 disposed on the operating rod 91, and a transmission member 93 disposed in the oil storage chamber 6, the sliding direction of the operating rod 91 is perpendicular to the length direction of the threaded sleeve 5, the length direction of the operating rod 91 is parallel to the sliding direction of the operating rod 91, one end of the operating rod 91 extends into the oil storage chamber 6, the other end extends outside the threaded sleeve 5, the threaded sleeve 5 is provided with an operating port 10 for the operating rod 91 to slide through, the operating port 10 is communicated with the oil storage chamber 6, the fixing member 92 is used for fixing the operating rod 91 and the threaded sleeve 5 relatively, the transmission member 93 is used for enabling the operating rod 91 to drive the plurality of opening and closing plates 8 to rotate to open or close the oil outlet 7, when the operating lever 91 is slid in a direction away from the threaded sleeve 5, the shutter plate 8 is rotated in a direction away from the oil outlet hole 7.

Referring to fig. 2 and 3, the fixing member 92 includes an external thread 921 fixed on the operation rod 91 and an internal thread 922 fixed on the inner wall of the operation opening 10, the external thread 921 and the internal thread 922 are in threaded fit, and a hand wheel 19 is fixedly sleeved at one end of the operation rod 91 located outside the threaded sleeve 5 so as to rotate the operation rod 91. In other embodiments, the fixing member 92 may be replaced by a rubber pad fixedly sleeved on the operation rod 91, the rubber pad is tightly abutted against the inner wall of the operation opening 10, and the relative fixation between the operation rod 91 and the threaded sleeve 5 can also be realized through the friction force between the rubber pad and the inner wall of the operation opening 10.

Referring to fig. 2 and 3, the transmission member 93 includes a transmission rod 931 sliding in the oil storage chamber 6 and a plurality of connecting rods 932 hinged on one side of the transmission rod 931 close to the oil outlet 7, the sliding direction of the transmission rod 931 is parallel to the sliding direction of the operating rod 91, the length direction of the transmission rod 931 is parallel to the arrangement direction of the plurality of oil outlet 7, the hinge axis of the connecting rod 932 is parallel to the hinge axis of the opening and closing plate 8, one end of the operating rod 91 located in the oil storage chamber 6 penetrates through the transmission rod 931 and is rotatably connected with the transmission rod 931, the connecting rods 932 correspond to the opening and closing plate 8 one to one, one end of the connecting rod 932 far away from the transmission rod 931 is hinged to the corresponding opening and closing plate 8, and the connecting rod 932 inclines upwards towards the direction far away from the opening and closing plate 8, which helps to save the occupied space.

When the oil outlet hole 7 needs to be opened, the operating rod 91 is rotated, the operating rod 91 slides towards the direction away from the threaded sleeve 5 through the threaded connection of the external thread 921 and the internal thread 922, the operating rod 91 and the threaded sleeve 5 are relatively fixed due to the self-locking function of the threaded connection between the external thread 921 and the internal thread 922, the operating rod 91 pulls the transmission rod 931 to slide towards the direction away from the oil outlet hole 7, and therefore the connecting rod 932 pulls the opening and closing plate 8 to rotate towards the direction away from the oil outlet hole 7, the oil outlet hole 7 is opened, and lubricating oil can flow onto the screw rod 4 to lubricate the screw rod 4; when the oil outlet hole 7 needs to be closed, the operating rod 91 is rotated, the operating rod 91 slides towards the direction close to the threaded sleeve 5, the operating rod 91 pushes the transmission rod 931 to slide towards the direction close to the oil outlet hole 7, and therefore the connecting rod 932 pushes the opening and closing plate 8 to rotate towards the direction close to the oil outlet hole 7, and the oil outlet hole 7 is closed.

Referring to fig. 2 and 4, a guide block 14 is fixedly connected to one end of the transmission rod 931, which is far away from the slider 17, a guide groove 15 in sliding fit with the guide block 14 is formed in the inner wall of the oil storage cavity 6, and the length direction of the guide groove 15 is parallel to the sliding direction of the transmission rod 931. When the transmission rod 931 slides, the guide block 14 is driven to slide along the guide groove 15, which helps to improve the sliding effect of the transmission rod 931, so that the transmission rod 931 drives the connecting rod 932 to realize the stable rotation of the opening and closing plate 8.

Referring to fig. 2 and 3, an oil inlet 11 is formed in the operating rod 91, the oil inlet 11 penetrates through two ends of the operating rod 91 along the length direction of the operating rod 91, the oil inlet 11 is communicated with the oil storage cavity 6, and a rubber plug 12 for opening and closing the oil inlet 11 is clamped at one end, far away from the threaded sleeve 5, of the operating rod 91. The rubber stopper 12 is taken down from the oil inlet 11, so that lubricating oil can be added into the oil inlet 11, the lubricating oil is filled in the oil storage cavity 6, then the rubber stopper 12 is clamped with the oil inlet 11, and the oil inlet 11 is sealed.

The implementation principle of the embodiment of the application is as follows: when the movable plate 2 needs to slide, the operating rod 91 is rotated, the operating rod 91 slides towards the direction far away from the threaded sleeve 5, the operating rod 91 and the threaded sleeve 5 are relatively fixed through threaded connection between the external thread 921 and the internal thread 922, the operating rod 91 pulls the transmission rod 931 to slide towards the direction far away from the oil outlet hole 7, thereby the corresponding opening and closing plate 8 is pulled through the connecting rod 932 to rotate towards the direction far away from the oil outlet hole 7, the opening of the oil outlet hole 7 is realized, lubricating oil in the oil storage cavity 6 is sprayed to the threaded connection part of the screw rod 4 and the threaded sleeve 5 through the oil outlet hole 7, and then the screw rod 4 is lubricated, then the threaded sleeve 5 is rotated, the threaded sleeve 5 is made to drive the sliding block 17 and the movable plate 2 to slide, the lubricating oil lubricates the screw rod 4, the threaded sleeve 5 is helped to rotate by workers, and manpower is saved to a certain extent.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, 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

1. Reinforced concrete biparting protective airtight door, including two door leafs (1), one of them sliding is provided with movable plate (2) on door leaf (1), offer on door leaf (1) with movable plate (2) sliding fit's spout (3), its characterized in that: be provided with screw rod (4) in spout (3), threaded sleeve is equipped with threaded sleeve (5) on screw rod (4), the one end and the movable plate (2) of threaded sleeve (5) rotate and connect, set up oil storage chamber (6) that are used for storing lubricating oil in threaded sleeve (5), a plurality of oil outlets (7) have been seted up to one side that oil storage chamber (6) are close to screw rod (4), articulated on the diapire in oil storage chamber (6) have opening and close board (8) that are used for opening and close oil outlet (7), opening and close board (8) and oil outlet (7) one-to-one, be provided with on threaded sleeve (5) and be used for making opening and close board (8) orientation be close to or keep away from orientation pivoted that oil outlet (7) open and close subassembly (9).

2. The reinforced concrete two-leaf protective containment door of claim 1, wherein: open and close subassembly (9) including slip action bars (91) on threaded sleeve (5), setting up mounting (92) on action bars (91) and setting driving medium (93) in oil storage chamber (6), the length direction of the slip direction perpendicular to threaded sleeve (5) of action bars (91), the one end of action bars (91) extends to in oil storage chamber (6), and the other end extends outside threaded sleeve (5), mounting (92) are used for making action bars (91) and threaded sleeve (5) relatively fixed, driving medium (93) are used for making action bars (91) drive a plurality of opening and closing plates (8) and rotate in order to open or to close oil outlet (7), work as when action bars (91) slip towards the direction of keeping away from threaded sleeve (5), opening and closing plate (8) rotate towards the direction of keeping away from oil outlet (7).

3. The reinforced concrete two-leaf protective containment door of claim 2, wherein: a plurality of the array orientation of oil outlet (7) is on a parallel with the length direction of threaded sleeve (5), driving medium (93) are including sliding transfer line (931) in oil storage chamber (6) and articulating a plurality of connecting rods (932) that are close to oil outlet (7) one side at transfer line (931), the slip orientation of transfer line (931) is on a parallel with the slip orientation of action bars (91), one end and transfer line (931) that action bars (91) are located oil storage chamber (6) are connected, the length direction of transfer line (931) is on a parallel with the array orientation of a plurality of oil outlet (7), connecting rod (932) and opening and closing plate (8) one-to-one, connecting rod (932) are kept away from the one end of transfer line (931) and are opened and close plate (8) of correspondence and are articulated.

4. The reinforced concrete two-leaf protective containment door of claim 2, wherein: offer on threaded sleeve (5) and be used for supplying gliding operation mouth (10) of action bars (91), operation mouth (10) and oil storage chamber (6) intercommunication, mounting (92) are including setting up external screw thread (921) on action bars (91) and setting up internal thread (922) on operation mouth (10) inner wall, screw-thread fit between external screw thread (921) and internal thread (922), rotate between action bars (91) and transfer line (931) and be connected.

5. The reinforced concrete two-leaf protective containment door of claim 2, wherein: oil inlet (11) have been seted up on action bars (91), length direction along action bars (91) of oil inlet (11) runs through action bars (91) both ends, oil inlet (11) and oil storage chamber (6) intercommunication, the one end that threaded sleeve (5) were kept away from in action bars (91) is provided with rubber buffer (12) that are used for opening and close oil inlet (11).

6. The reinforced concrete double-leaf protective containment door of claim 1, wherein: one side that opens and close board (8) and be close to oil outlet (7) is provided with and is used for strengthening sealed pad (13) of leakproofness between opening and closing board (8) and oil storage chamber (6) diapire, sealed pad (13) set up along the circumference of opening and closing board (8).

7. The reinforced concrete two-leaf protective containment door of claim 3, wherein: the transmission rod (931) is provided with a guide block (14), and the inner wall of the oil storage cavity (6) is provided with a guide groove (15) in sliding fit with the guide block (14).

8. The reinforced concrete two-leaf protective containment door of claim 1, wherein: and an oil receiving groove (16) for receiving the lubricating oil dripped on the threaded sleeve (5) and the screw (4) is formed in the inner wall of the sliding groove (3).