Concrete protective door production equipment

Abstract

The invention belongs to the technical field of protective door production, and particularly relates to concrete protective door production equipment which comprises a forming shell. The forming shell can be fixedly mounted on a vibration table; a plurality of through grooves are formed in the top surface of the forming shell; an exhaust unit is arranged in each through groove; the exhaust unit comprises a strip-shaped shell connected to the interior of the through groove in a bolted mode. A plurality of through holes are uniformly formed in the bottom surface of an inner cavity of the strip-shaped shell; an exhaust pipe body is bolted in the through hole; an air exhaust assembly is arranged on the top surface of the strip-shaped shell; the vibration table is started to vibrate, so that the shell of the protective door is fully filled with concrete; and meanwhile, an air exhaust assembly is started, air in the forming shell is exhausted through an air exhaust pipe body, the interior of the forming shell is kept in a negative pressure state, air in the concrete is exhausted, and therefore the number of bubbles generated after the concrete is solidified is reduced, and the protection effect of the concrete protection door is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of protective door production, in particular to a concrete protective door production device. Background Art

[0002] Concrete protective doors have the function of blocking shock waves and isolating toxic agents. Concrete protective doors should be able to block shock waves and meet the corresponding resistance requirements. When concrete protective doors are produced, the supporting steel cage is first laid in the outer frame, and then the concrete is poured. After the concrete solidifies, the processing of the supporting door body can be completed.

[0003] A patent application with publication number CN110984805A discloses a concrete protective door and its production process, including a door frame and a door panel, wherein a hinge device and a bolt device are connected between the door frame and the door panel, wherein the bolt device includes an engaging groove located in the door frame and a locking tongue located in the door panel, wherein the tongue lock is connected to a driving assembly that enables one end of the locking tongue to slide in the engaging groove; a guide slide for placing the locking tongue is provided in the door panel, wherein one end of the guide slide is connected to one end of the door panel and corresponds to the position of the engaging groove; a placement cavity is opened at one end of the door panel facing the engaging groove, wherein the placement cavity is connected to the guide slide, wherein a buffer mechanism is provided in the placement cavity, wherein the buffer mechanism includes a bearing frame, a buffer member and a pressure plate, wherein one side of the pressure plate is connected to the buffer member and the other side is in contact with the side wall of the locking tongue.

[0004] After the concrete protective door is poured, bubbles will form inside the concrete during the solidification process. If the concrete protective door is affected by external forces during installation and use, the internal bubbles will easily cause cracks. Too many cracks will cause gas penetration in the concrete protective door, resulting in a decrease in the protective effect of the concrete protective door.

[0005] To this end, the present invention provides a concrete protective door production device. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problems is: a concrete protective door production equipment described in the present invention includes a molding shell; the molding shell can be fixedly installed on a vibration table; the top surface of the molding shell is provided with a plurality of through grooves; an exhaust unit is arranged inside each of the through grooves; the exhaust unit includes a strip shell bolted to the inside of the through grooves; the inner cavity bottom surface of the strip shell is evenly provided with a plurality of through holes; an exhaust pipe body is bolted inside the through holes; an exhaust component is arranged on the top surface of the strip shell, and the exhaust component is connected to the top of the exhaust pipe body; the vibration table is started to vibrate, so that the concrete fully fills the inside of the shell of the protective door; at the same time, the exhaust component is started to extract the air inside the molding shell through the exhaust pipe body, so that the inside of the molding shell is kept in a negative pressure state, so that the gas inside the concrete is discharged, thereby reducing the number of bubbles after the concrete solidifies, and improving the protective effect of the concrete protective door.

[0008] Preferably, the molded shell is composed of a bottom plate, a top plate, two side plates and two end plates assembled by multiple bolts; rubber sealing pads are provided at the connection positions between the bottom plate, the top plate, the side plates and the end plates; a plurality of support platforms are evenly bolted to the top surface of the bottom plate; the through groove is provided on the top plate; it is convenient for the staff to assemble and disassemble, which is beneficial to the production of concrete protective doors; by providing a support platform to support the molded shell, it is convenient to fix the molded shell to the top surface of the vibration table, and to facilitate the transportation of the molded shell.

[0009] Preferably, an annular cavity is provided in the middle of the air extraction tube body; a sliding column is slidably installed in the middle of the air extraction tube body; an air cavity is provided on the inner side of the top of the sliding column; a plurality of connecting holes are provided on the bottom outer ring of the air cavity; the connecting holes are connected with the annular cavity; a transverse tube is fixedly connected to the top surface of the inner cavity of the strip shell; an interface is provided in the middle of the top side of the transverse tube, and a plurality of interfaces are also evenly provided on the bottom side of the transverse tube; the interface on the top side of the transverse tube passes through the top surface of the strip shell; a telescopic air pipe is connected between the interface on the bottom side of the transverse tube and the top of the air cavity; the interface on the top side of the transverse tube is connected to the air extraction component; lifting components are provided at both ends of the inner cavity of the strip shell, and the lifting components drive the sliding column to lift and lower.

[0010] Preferably, the lifting assembly includes a screw rod rotatably installed at both ends of the inner cavity of the strip shell; the top end of the screw rod rotates and penetrates the top surface of the strip shell; a threaded sleeve is installed on the outer circle thread of the screw rod; a connecting cross bar is bolted between the threaded sleeve and the top end of an adjacent sliding column and between the top ends of two adjacent sliding columns.

[0011] Preferably, an air guide ring is fixedly connected to the inner wall of the annular cavity; a plurality of vertical grooves are opened around the inner ring of the air guide ring; a support ring is fixedly connected to the middle outer ring of the sliding column; the support ring is slidably matched with the inner ring of the air guide ring; the support ring is lifted and slid inside the annular cavity, thereby effectively limiting the movement range of the sliding column; the sliding stability of the sliding column is effectively improved by the sliding cooperation between the support ring and the inner ring of the air guide ring; the vertical grooves opened on the inner ring of the air guide ring provide a channel for gas discharge, thereby ensuring the smoothness of gas flow inside the annular cavity.

[0012] Preferably, the air guide ring and the support ring are magnetic; the inner ring of the air guide ring and the outer ring of the support ring are attracted to each other; the air guide ring and the support ring can be attracted to each other, which is conducive to the support ring staying at different height positions of the inner ring of the air guide ring, thereby facilitating the sliding column to stay at different height positions, and then facilitating the control and adjustment of different states of the exhaust unit.

[0013] Preferably, the bottom outer ring of the sliding column and the bottom of the annular cavity are both fixedly connected with connecting rings; a plurality of elastic rubber strips are fixedly connected around the two connecting rings; the edges of adjacent elastic rubber strips overlap; thereby effectively blocking the entry of concrete debris.

[0014] Preferably, the air extraction component comprises a circular shell fixedly connected to the top surface of the strip shell; a semi-annular rubber hose is fixedly connected to the bottom surface of the inner cavity of the circular shell; a plurality of spring sheets are inlaid on the top surface of the inner cavity of the rubber hose; an air inlet is provided on the bottom surface of one end of the rubber hose, and an air outlet is provided on the bottom surface of the other end; the air inlet and air outlet of the rubber hose both pass through the bottom surface of the circular shell; the air inlet and air outlet of the rubber hose are both connected to a one-way air valve; the one-way air valve at one end of the air inlet of the rubber hose is connected to the interface on the top side of the cross tube; a rotating rod is rotatably installed in the middle part of the circular shell; a motor is fixedly connected to the top surface of the circular shell; the output shaft of the motor is fixedly connected to the rotating rod; a plurality of mounting brackets are arranged around the outer ring of the rotating rod; an extrusion roller is rotatably installed on the bottom of the mounting bracket; the extrusion roller can squeeze the top surface of the rubber hose to rotate; and the air inside the molded shell is discharged.

[0015] Preferably, a bracket is fixedly connected to the top of the outer ring of the rotating rod; a plurality of cross beams are fixedly connected around the outer ring of the bracket, and the cross beams correspond to the mounting frame; a plurality of telescopic rods are evenly fixedly connected between the bottom surface of the cross beams of the bracket and the top surface of the mounting frame; a spring is arranged on the outer ring of the telescopic rod; this is conducive to pushing out the air inside the rubber hose.

[0016] Preferably, a convex ring is fixedly connected to the inner ring of the bottom surface of the through groove; a groove is provided on the outer ring of the bottom surface of the strip shell; the convex ring matches the groove; and the stability and firmness of the strip shell inside the through groove are improved by matching the convex ring of the inner ring of the through groove with the groove on the strip shell.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The concrete protective door production equipment described in the present invention comprises a forming shell, a strip shell, a through hole, an exhaust pipe body and an exhaust assembly; the forming shell is fixedly installed on the top surface of a vibration table, the outer shell of the protective door is placed inside the forming shell, and the tied steel cage is placed inside the outer shell of the protective door, concrete is injected into the outer shell of the protective door, and the vibration table is started for vibration, so that the concrete fully fills the inner shell of the protective door; at the same time, the exhaust assembly is started to extract the air inside the forming shell through the exhaust pipe body, so that the inside of the forming shell is maintained in a negative pressure state, so that the gas inside the concrete is discharged, thereby reducing the number of bubbles after the concrete solidifies and improving the protective effect of the concrete protective door.

[0019] 2. The concrete protection door production equipment described in the present invention comprises an annular cavity, a sliding column, an air cavity, a connecting hole, a transverse tube, a telescopic air pipe, a screw rod, a threaded sleeve and a connecting cross bar; when not in operation, the bottom end of the sliding column overlaps with the bottom end of the exhaust pipe body, sealing the inner ring of the exhaust pipe body, thereby preventing concrete and other impurities from entering the exhaust pipe body and causing blockage;

[0020] During operation, the screw is rotated to drive the threaded sleeve to move upward, and through the connection of the connecting cross bar, multiple sliding columns are driven to slide upward along the inside of the air extraction pipe body, so that the bottom end of the sliding column rises to the inside of the annular cavity, so that the interior of the formed shell is connected with the air extraction component through the bottom end of the inner ring of the air extraction pipe body, the annular cavity, the connecting hole, the air cavity, the telescopic air pipe and the cross pipe, thereby realizing a negative pressure environment inside the formed shell, so that the gas inside the concrete is discharged; when the inner ring of the bottom end of the air extraction pipe body is blocked by concrete, affecting the discharge of air, at this time, the screw is reversed to drive the threaded sleeve to move downward, and through the connection of the connecting cross bar, multiple sliding columns are driven to slide downward along the inside of the air extraction pipe body, so that the bottom end of the sliding column passes through the inner ring of the bottom end of the air extraction pipe body, and the inner ring of the bottom end of the air extraction pipe body is unblocked, thereby effectively ensuring the unblocking of the air extraction pipe body. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] Figure 1 is a stereogram of the present invention;

[0023] Figure 2 is an exploded view of the present invention;

[0024] Figure 3 is a three-dimensional diagram of the top plate of the present invention;

[0025] Figure 4 is a three-dimensional diagram of the exhaust unit of the present invention;

[0026] Figure 5 It is a bottom structural diagram of the strip-shaped housing in the present invention;

[0027] Figure 6 is an exploded view of the strip-shaped housing in the present invention;

[0028] Figure 7 It is the internal structure diagram of the strip-shaped housing in the present invention;

[0029] Figure 8 is a stereoscopic diagram of the air extraction tube body of the present invention;

[0030] Fig. 9 is an exploded view of the air extraction pipe body of the present invention;

[0031] Fig.10 is a cross-sectional view of the air extraction tube body in the present invention;

[0032] Fig.11 is a stereogram of the connecting ring and the elastic rubber strip in the present invention;

[0033] Fig.12 is a three-dimensional diagram of a circular shell in the present invention;

[0034] Fig.13 It is the internal structure diagram of the circular shell in the present invention;

[0035] Fig.14 It is a three-dimensional diagram of the mounting frame, squeezing roller, bracket, telescopic rod and spring in the present invention;

[0036] In the figure: 1. molded shell; 2. through groove; 3. strip shell; 4. through hole; 5. exhaust pipe body; 6. support platform; 7. ring cavity; 8. sliding column; 9. air cavity; 10. connecting hole; 11. cross tube; 12. telescopic air pipe; 13. screw; 14. threaded sleeve; 15. connecting cross bar; 16. air guide ring; 17. vertical groove; 18. support ring; 19. connecting ring; 20. elastic rubber strip; 21. circular shell; 22. rubber hose; 23. one-way air valve; 24. rotating rod; 25. motor; 26. mounting frame; 27. squeezing roller; 28. bracket; 29. ​​telescopic rod; 30. spring; 31. convex ring; 32. groove; 101. bottom plate; 102. top plate; 103. side plate; 104. end plate. DETAILED DESCRIPTION

[0037] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0038] like Figures 1 to 8 As shown, a concrete protective door production device according to an embodiment of the present invention comprises a forming shell 1; the forming shell 1 can be fixedly mounted on a vibration table; a plurality of through slots 2 are provided on the top surface of the forming shell 1; an exhaust unit is provided inside each of the through slots 2; the exhaust unit comprises a strip shell 3 bolted inside the through slots 2; a plurality of through holes 4 are evenly provided on the inner bottom surface of the inner cavity of the strip shell 3; an exhaust pipe body 5 is bolted inside the through hole 4; an exhaust assembly is provided on the top surface of the strip shell 3, and the exhaust assembly is connected to the top of the exhaust pipe body 5;

[0039] During operation, the forming shell 1 is fixedly mounted on the top surface of the vibration table, the outer shell of the protective door is placed inside the forming shell 1, and the tied steel cage is placed inside the outer shell of the protective door, concrete is injected into the outer shell of the protective door, and the vibration table is started to vibrate so that the concrete fully fills the inner shell of the protective door; at the same time, the exhaust component is started to exhaust the air inside the forming shell 1 through the exhaust pipe body 5, so that the inside of the forming shell 1 is kept in a negative pressure state, so that the gas inside the concrete is discharged, thereby reducing the number of bubbles after the concrete solidifies and improving the protective effect of the concrete protective door;

[0040] The molded shell 1 is provided to provide an effective supporting and fixing effect for the outer shell of the protective door, thereby preventing the outer shell of the protective door from being deformed under the gravity of the flowing concrete, and effectively improving the quality of the concrete protective door; and the molded shell 1 is provided to provide a sealed environment for the solidification of the concrete, which is conducive to maintaining a negative pressure state around the concrete.

[0041] like Figure 1 to Figure 2 As shown, the molded shell 1 is composed of a bottom plate 101, a top plate 102, two side plates 103 and two end plates 104 assembled by multiple bolts; rubber sealing pads are provided at the connection positions between the bottom plate 101, the top plate 102, the side plates 103 and the end plates 104; a plurality of support platforms 6 are evenly bolted to the top surface of the bottom plate 101; the through groove 2 is opened on the top plate 102; by configuring the molded shell 1 to be composed of a bottom plate 101, a top plate 102, two side plates 103 and two end plates 104 assembled by multiple bolts, it is convenient for the staff to assemble and disassemble, which is beneficial to the production of concrete protective doors; by configuring the support platform 6 to support the molded shell 1, it is convenient to fix the molded shell 1 to the top surface of the vibration table and to transport the molded shell 1.

[0042] like Figures 5 to 10As shown, an annular cavity 7 is provided in the middle of the air extraction tube body 5; a sliding column 8 is slidably installed in the middle of the air extraction tube body 5; an air cavity 9 is provided on the inner side of the top of the sliding column 8; a plurality of connecting holes 10 are provided on the bottom outer ring of the air cavity 9; the connecting holes 10 are communicated with the annular cavity 7; a transverse tube 11 is fixedly connected to the top surface of the inner cavity of the strip shell 3; an interface is provided in the middle of the top side of the transverse tube 11, and a plurality of interfaces are also evenly provided on the bottom side of the transverse tube 11; the interface on the top side of the transverse tube 11 passes through the top surface of the strip shell 3; a telescopic air pipe 12 is connected between the interface on the bottom side of the transverse tube 11 and the top of the air cavity 9; the interface on the top side of the transverse tube 11 is connected to the air extraction component; lifting components are provided at both ends of the inner cavity of the strip shell 3, and the lifting components drive the sliding column 8 to rise and fall;

[0043] The lifting assembly includes screws 13 rotatably mounted at both ends of the inner cavity of the strip housing 3; the top of the screw 13 rotates through the top surface of the strip housing 3; a threaded sleeve 14 is installed on the outer thread of the screw 13; a connecting cross bar 15 is bolted between the threaded sleeve 14 and the top of an adjacent sliding column 8 and between the tops of two adjacent sliding columns 8;

[0044] When not working, the threaded sleeve 14 is located in the middle of the screw rod 13. At this time, the bottom end of the sliding column 8 coincides with the bottom end of the exhaust pipe body 5, so that the bottom end of the sliding column 8 seals the inner ring of the exhaust pipe body 5, so that the bottom end of the sliding column 8, the bottom end of the exhaust pipe body 5 and the bottom surface of the top plate 102 are kept in the same plane, thereby preventing concrete and other impurities from entering the exhaust pipe body 5 and causing blockage;

[0045] During operation, when the air inside the forming shell 1 is discharged, the screw 13 is rotated to drive the threaded sleeve 14 to move upward, and through the connection of the connecting cross bar 15, the multiple sliding columns 8 are driven to slide upward along the inside of the exhaust pipe body 5, so that the bottom end of the sliding column 8 rises to the inside of the annular cavity 7, so that the inside of the forming shell 1 is connected to the exhaust component through the bottom end of the inner ring of the exhaust pipe body 5, the annular cavity 7, the connecting hole 10, the air cavity 9, the telescopic air pipe 12 and the cross pipe 11; the exhaust component is started to discharge the air inside the forming shell 1, thereby realizing a negative pressure environment inside the forming shell 1, so that the gas inside the concrete is discharged;

[0046] When the inner circle of the bottom end of the exhaust pipe body 5 is blocked by concrete, affecting the exhaust of air, at this time, the screw 13 is reversed to drive the threaded sleeve 14 to move up and down, and through the connection of the connecting cross bar 15, multiple sliding columns 8 are driven to slide downward along the inside of the exhaust pipe body 5, so that the bottom end of the sliding column 8 passes through the inner circle of the bottom end of the exhaust pipe body 5, and the inner circle of the bottom end of the exhaust pipe body 5 is unblocked, thereby effectively ensuring the unblocking of the exhaust pipe body 5.

[0047] like Figures 9 and 10As shown, an air guide ring 16 is fixedly connected to the inner wall of the annular cavity 7; a plurality of vertical grooves 17 are formed around the inner ring of the air guide ring 16; a support ring 18 is fixedly connected to the middle outer ring of the sliding column 8; the support ring 18 is slidably matched with the inner ring of the air guide ring 16;

[0048] The support ring 18 is lifted and slid inside the annular cavity 7, thereby effectively limiting the movement range of the slide column 8; the support ring 18 slides with the inner ring of the air guide ring 16, thereby effectively improving the sliding stability of the slide column 8; the vertical groove 17 opened in the inner ring of the air guide ring 16 provides a channel for gas discharge, thereby ensuring the smoothness of the gas flow inside the annular cavity 7.

[0049] like Figures 9 and 10 As shown, the air guide ring 16 and the support ring 18 are magnetic; the inner ring of the air guide ring 16 and the outer ring of the support ring 18 are attracted to each other;

[0050] The air guide ring 16 and the support ring 18 can be attracted to each other, which helps the support ring 18 to stay at different heights of the inner ring of the air guide ring 16, thereby helping the slide column 8 to stay at different heights, thereby facilitating control and adjustment of different states of the exhaust unit.

[0051] like Figures 9 to 11 As shown, the outer ring of the bottom of the sliding column 8 and the bottom of the annular cavity 7 are both fixedly connected with a connecting ring 19; a plurality of elastic rubber strips 20 are fixedly connected around two of the connecting rings 19; the edges of adjacent elastic rubber strips 20 overlap;

[0052] When not working, the bottom end of the slide column 8 seals the inner ring of the exhaust pipe body 5. At this time, the elastic rubber strips 20 are not stretched, and the adjacent elastic rubber strips 20 overlap each other to form an umbrella-shaped sealing structure, which shields the slide column 8 and the annular cavity 7 and effectively prevents the entry of impurities.

[0053] When working, the bottom end of the slide column 8 rises to the inside of the annular cavity 7, and the slide column 8 drives the top connecting ring 19 to rise in height, driving the elastic rubber strip 20 to stretch, so that the width of the elastic rubber strip 20 is reduced, so that a gap is generated between two adjacent elastic rubber strips 20, so that the air inside the molded shell 1 can be discharged smoothly; at the same time, since the multiple elastic rubber strips 20 are in a radial structure, a filtering structure is formed, thereby effectively blocking the entry of concrete debris.

[0054] like Figure 4 , Fig.12 , Fig.13 and Fig.14As shown, the air extraction component includes a circular shell 21 fixedly connected to the top surface of the strip shell 3; a semi-circular rubber hose 22 is fixedly connected to the bottom surface of the inner cavity of the circular shell 21; a plurality of spring sheets are inlaid on the top surface of the inner cavity of the rubber hose 22; an air inlet is provided on the bottom surface of one end of the rubber hose 22, and an air outlet is provided on the bottom surface of the other end; the air inlet and air outlet of the rubber hose 22 both pass through the bottom surface of the circular shell 21; the air inlet and air outlet of the rubber hose 22 are connected to a one-way The one-way air valve 23 at one end of the air inlet of the rubber hose 22 is connected to the interface on the top side of the cross tube 11; a rotating rod 24 is rotatably installed in the middle of the circular shell 21; a motor 25 is fixedly connected to the top surface of the circular shell 21; the output shaft of the motor 25 is fixedly connected to the rotating rod 24; a plurality of mounting frames 26 are arranged around the outer ring of the rotating rod 24; a squeezing roller 27 is rotatably installed at the bottom of the mounting frame 26; the squeezing roller 27 can squeeze the top surface of the rubber hose 22 to rotate;

[0055] During operation, the motor 25 drives the rotating rod 24 to rotate, and drives the mounting frame 26 and the squeezing roller 27 to rotate. The squeezing roller 27 rotates and squeezes the rubber hose 22, so that the air inside the rubber hose 22 is pushed toward the air outlet of the rubber hose 22 and discharged. At the same time, after the squeezing roller 27 passes, the spring sheet inside the rubber hose 22 is reset, so that the rubber hose 22 is reset, forming a negative pressure, and the air inside the molded shell 1 is sucked in; at the same time, the one-way air valve 23 is set to effectively ensure the direction of gas flow; thereby achieving the discharge of air inside the molded shell 1.

[0056] like Figure 13 to Figure 14 As shown, a bracket 28 is fixedly connected to the top of the outer circle of the rotating rod 24; a plurality of cross beams are fixedly connected around the outer circle of the bracket 28, and the cross beams correspond to the mounting frame 26; a plurality of telescopic rods 29 are evenly fixedly connected between the bottom surface of the cross beam of the bracket 28 and the top surface of the mounting frame 26; a spring 30 is arranged on the outer circle of the telescopic rod 29; the bracket 28 is connected to the mounting frame 26 by the arranged telescopic rod 29, so that the bracket 28 can drive the mounting frame 26 to move, and the distance between the mounting frame 26 and the bracket 28 can be adjusted; through the elastic force of the spring 30, the mounting frame 26 has a tendency to be pushed away from the bracket 28, so that the squeezing roller 27 can stably squeeze the rubber hose 22, which is conducive to pushing the air inside the rubber hose 22 out.

[0057] like Figure 3 and Figure 5 As shown, a convex ring 31 is fixed to the inner circle of the bottom surface of the through groove 2; a groove 32 is opened on the outer circle of the bottom surface of the strip shell 3; the convex ring 31 matches the groove 32; the convex ring 31 of the inner circle of the through groove 2 cooperates with the groove 32 on the strip shell 3, thereby improving the stability and firmness of the strip shell 3 inside the through groove 2.

[0058] Working principle: When not working, the threaded sleeve 14 is located in the middle of the screw 13. At this time, the bottom end of the sliding column 8 coincides with the bottom end of the exhaust pipe body 5, so that the bottom end of the sliding column 8 seals the inner ring of the exhaust pipe body 5, so that the bottom end of the sliding column 8, the bottom end of the exhaust pipe body 5 and the bottom surface of the top plate 102 remain in the same plane; the bottom end of the sliding column 8 seals the inner ring of the exhaust pipe body 5. At this time, the elastic rubber strip 20 is not stretched, and the adjacent elastic rubber strips 20 overlap each other to form an umbrella-shaped sealing structure, which shields the sliding column 8 and the annular cavity 7, effectively preventing the entry of impurities;

[0059] During operation, the molded shell 1 is fixedly mounted on the top surface of the vibration table, the shell of the protective door is placed inside the molded shell 1, and the tied steel cage is placed inside the shell of the protective door, concrete is poured into the shell of the protective door, and the vibration table is started to vibrate, so that the concrete fully fills the inside of the shell of the protective door;

[0060] The screw rod 13 is rotated to drive the threaded sleeve 14 to move upward, and through the connection of the connecting cross bar 15, multiple sliding columns 8 are driven to slide upward along the inside of the exhaust pipe body 5, so that the bottom end of the sliding column 8 rises to the inside of the annular cavity 7, so that the inside of the molded shell 1 is connected with the exhaust assembly through the bottom end of the inner ring of the exhaust pipe body 5, the annular cavity 7, the connecting hole 10, the air cavity 9, the telescopic air pipe 12 and the cross pipe 11; the bottom end of the sliding column 8 rises to the inside of the annular cavity 7, and the sliding column 8 drives the top connecting ring 19 to rise in height, drives the elastic rubber strip 20 to stretch, so that the width of the elastic rubber strip 20 is reduced, so that a gap is generated between two adjacent elastic rubber strips 20, so that the air inside the molded shell 1 can be discharged smoothly;

[0061] The motor 25 drives the rotating rod 24 to rotate, and drives the mounting frame 26 and the squeezing roller 27 to rotate. The squeezing roller 27 rotates and squeezes the rubber hose 22, so that the air inside the rubber hose 22 is pushed to move toward the air outlet of the rubber hose 22 and discharged. At the same time, after the squeezing roller 27 passes, the spring sheet inside the rubber hose 22 is reset, so that the rubber hose 22 is reset, forming a negative pressure, so that the interior of the forming shell 1 is connected to the rubber hose 22 through the inner ring bottom end of the exhaust pipe body 5, the annular cavity 7, the connecting hole 10, the air cavity 9, the telescopic air pipe 12 and the cross pipe 11; so that the interior of the forming shell 1 maintains a negative pressure state, so that the gas inside the concrete is discharged, thereby reducing the number of bubbles after the concrete solidifies, and improving the protective effect of the concrete protective door.

[0062] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A concrete protective door production equipment, characterized in that: It comprises a molded shell (1); the molded shell (1) can be fixedly mounted on a vibration table; a plurality of through slots (2) are provided on the top surface of the molded shell (1); an exhaust unit is provided inside each of the through slots (2); The exhaust unit comprises a strip-shaped shell (3) bolted to the inside of the through groove (2); a plurality of through holes (4) are evenly arranged on the bottom surface of the inner cavity of the strip-shaped shell (3); an exhaust pipe body (5) is bolted to the inside of the through hole (4); an exhaust component is arranged on the top surface of the strip-shaped shell (3), and the exhaust component is connected to the top of the exhaust pipe body (5).

2. The concrete protective door production equipment according to claim 1 is characterized in that: The molded shell (1) is composed of a bottom plate (101), a top plate (102), two side plates (103) and two end plates (104) assembled by a plurality of bolts; rubber sealing pads are provided at the connection positions between the bottom plate (101), the top plate (102), the side plates (103) and the end plates (104); a plurality of support platforms (6) are evenly bolted to the top surface of the bottom plate (101); and the through groove (2) is provided on the top plate (102).

3. The concrete protective door production equipment according to claim 1 is characterized in that: An annular cavity (7) is provided in the middle of the air extraction tube body (5); a sliding column (8) is slidably mounted in the middle of the air extraction tube body (5); an air cavity (9) is provided on the inner side of the top of the sliding column (8); a plurality of connecting holes (10) are provided on the outer ring of the bottom of the air cavity (9); the connecting holes (10) are connected to the annular cavity (7); a transverse tube (11) is fixedly connected to the top surface of the inner cavity of the strip-shaped shell (3); an interface is provided in the middle of the top side of the transverse tube (11) , and a plurality of interfaces are evenly arranged on the bottom side of the transverse tube (11); the interface on the top side of the transverse tube (11) penetrates the top surface of the strip-shaped shell (3); a telescopic air pipe (12) is connected between the interface on the bottom side of the transverse tube (11) and the top of the air cavity (9); the interface on the top side of the transverse tube (11) is connected to the air extraction component; lifting components are arranged at both ends of the inner cavity of the strip-shaped shell (3), and the lifting components drive the sliding column (8) to move up and down.

4. The concrete protective door production equipment according to claim 3 is characterized in that: The lifting assembly comprises a screw rod (13) rotatably mounted at both ends of the inner cavity of the strip shell (3); the top end of the screw rod (13) rotates to penetrate the top surface of the strip shell (3); a threaded sleeve (14) is installed on the outer thread of the screw rod (13); a connecting cross bar (15) is bolted between the threaded sleeve (14) and the top end of an adjacent sliding column (8) and between the top ends of two adjacent sliding columns (8).

5. The concrete protective door production equipment according to claim 3 is characterized in that: An air guide ring (16) is fixedly connected to the inner wall of the annular cavity (7); a plurality of vertical grooves (17) are arranged around the inner ring of the air guide ring (16); a support ring (18) is fixedly connected to the middle outer ring of the sliding column (8); and the support ring (18) is slidably matched with the inner ring of the air guide ring (16).

6. The concrete protective door production equipment according to claim 5, characterized in that: The air guide ring (16) and the support ring (18) are magnetic; the inner ring of the air guide ring (16) and the outer ring of the support ring (18) are attracted to each other.

7. The concrete protective door production equipment according to claim 3 is characterized in that: The outer ring of the bottom of the sliding column (8) and the bottom of the annular cavity (7) are both fixedly connected with a connecting ring (19); a plurality of elastic rubber strips (20) are fixedly connected around two of the connecting rings (19); and the edges of adjacent elastic rubber strips (20) overlap.

8. The concrete protective door production equipment according to claim 3 is characterized in that: The air extraction component comprises a circular shell (21) fixedly connected to the top surface of the strip-shaped shell (3); a semi-circular rubber hose (22) is fixedly connected to the bottom surface of the inner cavity of the circular shell (21); a plurality of spring sheets are inlaid on the top surface of the inner cavity of the rubber hose (22); an air inlet is arranged on the bottom surface of one end of the rubber hose (22), and an air outlet is arranged on the bottom surface of the other end; the air inlet and the air outlet of the rubber hose (22) both pass through the bottom surface of the circular shell (21); the air inlet and the air outlet of the rubber hose (22) are both connected to a one-way air valve (23); The one-way air valve (23) at one end of the air inlet of the rubber hose (22) is connected to the interface on the top side of the transverse tube (11); a rotating rod (24) is rotatably mounted in the middle of the circular shell (21); a motor (25) is fixedly connected to the top surface of the circular shell (21); the output shaft of the motor (25) is fixedly connected to the rotating rod (24); a plurality of mounting frames (26) are arranged around the outer ring of the rotating rod (24); a squeezing roller (27) is rotatably mounted at the bottom of the mounting frame (26); the squeezing roller (27) can squeeze the top surface of the rubber hose (22) and rotate.

9. The concrete protective door production equipment according to claim 8, characterized in that: A bracket (28) is fixedly connected to the top of the outer ring of the rotating rod (24); a plurality of cross beams are fixedly connected around the outer ring of the bracket (28), and the cross beams correspond to the mounting frame (26); a plurality of telescopic rods (29) are evenly fixedly connected between the bottom surface of the cross beam of the bracket (28) and the top surface of the mounting frame (26); and a spring (30) is arranged on the outer ring of the telescopic rod (29).

10. The concrete protective door production equipment according to claim 1, characterized in that: The inner circle of the bottom surface of the through groove (2) is fixedly connected with a convex ring (31); the outer circle of the bottom surface of the strip-shaped housing (3) is provided with a groove (32); the convex ring (31) matches the groove (32).

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