CN212958316U - Steel structure door leaf - Google Patents

Abstract

The application relates to a steel structure door leaf, which comprises a door frame, a door leaf main body hinged with the door frame and two groups of locking devices arranged on the door leaf main body and close to the vertical edges at the two sides of the door frame; a plurality of locking grooves distributed along the vertical direction are respectively arranged on the frame edges at the two sides of the door frame; the locking device comprises a rotating hand lever, a movable rod and a plurality of locking rod pieces, wherein one end of the rotating hand lever is rotatably connected with the door leaf main body, the movable rod is hinged with the other end of the rotating hand lever and is vertically arranged, and one end of each locking rod piece is embedded into the locking groove; the middle part of the locking rod piece is rotationally connected with the door leaf main body, and one end of the locking rod piece, which is far away from the locking groove, is hinged with the movable rod. This application has the effect that improves the shock resistance of door leaf.

Description

Steel structure door leaf

Technical Field

The application relates to the field of civil air defense doors, in particular to a steel structure door leaf.

Background

At present, people's air defense is also called civil defense, is a government mobilization and organization for the masses, adopts measures of air attack prevention and disaster resistance and relief, implements rescue actions, and prevents and lightens the activities of disaster hazard, and a people's air defense door belongs to civil defense protection equipment and is a door of an entrance and an exit of a civil protection project.

The utility model discloses a current bulletin number is CN 208456429U's chinese utility model patent discloses a people's air defense door with radiation protection and sound insulation function, including articulating the people's air defense door leaf in the people's air defense door frame, be equipped with the handle on the people's air defense door leaf, the people's air defense door leaf includes the puigging, and the puigging is vacuum puigging or polyester fiber abatvoix puigging, and two sides of puigging all closely link there is concrete layer, and concrete layer's lateral surface closely links there is the copper mesh layer, the lower extreme that articulated department was kept away from at the people's air defense. When the civil air defense door in the above scheme is impacted, the supporting device of the door leaf can only provide the supporting force resisting the impact at the bottom, and the shock resistance at the top of the door leaf is poor, and when the door leaf is impacted, the top of the door leaf and the bottom are not uniformly stressed, so that the door leaf is easy to bend and damage.

With respect to the related art in the above, the inventors consider that there is a drawback that the door leaf is insufficient in impact resistance.

SUMMERY OF THE UTILITY MODEL

In order to improve the shock resistance of door leaf, this application provides a steel construction door leaf.

The application provides a steel construction door leaf adopts following technical scheme:

a steel structure door leaf comprises a door frame, a door leaf main body hinged with the door frame and two groups of locking devices arranged on the door leaf main body and close to the vertical edges on two sides of the door frame; a plurality of locking grooves distributed along the vertical direction are respectively formed on the frame edges at the two sides of the door frame; the locking device comprises a rotating hand lever, a movable rod and a plurality of locking rod pieces, wherein one end of the rotating hand lever is rotatably connected with the door leaf main body, the movable rod is hinged with the other end of the rotating hand lever and is vertically arranged, and one end of each locking rod piece is embedded into a plurality of locking grooves; the middle part of the locking rod piece is rotationally connected with the door leaf main body, and one end, far away from the locking groove, of the locking rod piece is hinged to the movable rod.

By adopting the technical scheme, before the civil air defense door is impacted, an operator closes the civil air defense door firstly, the operator rotates the rotating hand lever on the door leaf main body, the movable rod moves in the vertical direction along with the rotation of the rotating hand lever, and then the locking rod pieces are pulled by the movable rod, the locking rod pieces start to rotate along with the rotating hand lever, and the locking rod pieces rotate to the locking groove, so that the door leaf main body is fixed in the door frame; two groups of locking devices are locked with the frame edges at two sides of the door frame, and locking rod pieces arranged at the upper end and the lower end in the locking devices are embedded into the locking grooves, so that the door leaf main body is supported against impact from top to bottom, and the impact resistance of the door leaf is improved.

Preferably, the locking rod piece comprises a rotating protrusion fixed on the door leaf main body, a rotating ring rotatably connected with the rotating protrusion, a fixed lock fixedly connected with the rotating ring, and a movement assisting rod fixedly connected with the rotating ring; the one end that the helping hand was kept away from the rotating ring with the movable rod is articulated, fixed tapered end with the helping hand pole set up respectively in the both sides of rotating ring axis, the axis of fixed tapered end is the level setting in locking inslot, the axis of fixed tapered end breaks away from be vertical setting when locking the groove, the helping hand pole with the contained angle between the fixed tapered end is 135.

Through adopting above-mentioned technical scheme, when the people's air defense door is the open mode, the vertical setting of axis of fixed tapered end, when operating personnel closed the people's air defense door, the movable rod drives the helping hand pole and revolutes the rotating ring and rotate, the rotating ring rotates thereupon with fixed tapered end, fixed tapered end rotates to locking inslot, the rotation range of fixed tapered end is 90, the helping hand pole is 135 with fixed tapered end, make the helping hand pole only need keep away from the vertical direction of one side of fixed tapered end at the rotating ring and remove and to make fixed tapered end get into and break away from the locking groove, thereby prevent that the removal of the helping hand pole at the in-process of switch people's air defense door from receiving the.

Preferably, the end face of one end of the fixed lock head embedded into the locking groove is a spherical surface, and the spherical surface of the fixed lock head is tightly abutted against the inner wall of one side, close to the door leaf main body, of the locking groove.

Through adopting above-mentioned technical scheme, when operating personnel closed the people's air defense door, get into the in-process of locking groove at the locking member, the lateral wall of locking member supports tightly with the inner wall of locking groove always, and the locking member is by the tip toward middle diameter bigger and bigger for the door leaf main part is fixed more and more tightly in the door frame, thereby makes the connection of door leaf main part and door frame more firm.

Preferably, the rotating handle rod comprises a handle rod arranged on the side wall of the door leaf main body facing the outside of the door, a rotating rod arranged on the side of the door leaf main body far away from the handle rod, and a communicating rod fixed between the handle rod and the rotating rod; the communicating rod penetrates through the door leaf main body and is rotatably connected with the door leaf main body, the handle rod is arranged in parallel with the rotating rod, and the rotating rod is hinged with the movable rod.

Through adopting above-mentioned technical scheme, when operating personnel need open the people's air defense door from the outside, operating personnel rotated the handle bar pole outdoors, and the connecting rod rotates with the dwang thereupon together, and the dwang drives the movable rod and rotates, and then makes fixed tapered end rotate and break away from the locking groove to made things convenient for operating personnel to open and close people's air defense door outdoors.

Preferably, a limit hole is formed in the middle of the movable rod, the rotating rod is rotatably connected with the vertical inner side wall of the limit hole, and the rotating included angle in the limit hole is 90 degrees.

Through adopting above-mentioned technical scheme, when operating personnel opened and closed the people's air defense door, the dwang was 90 at spacing downthehole maximum turned angle, and fixed tapered end turned angle also was 90, and the turned range of handle bar is the same with the dwang for operating personnel can make fixed tapered end get into and break away from the locking groove with the extreme position that the handle bar rotated to both sides outdoors, thereby made things convenient for operating personnel to open and closed people's air defense door.

Preferably, a transmission assembly for simultaneously driving the two groups of locking devices to operate is mounted on the side wall of the door leaf main body close to the handle rod; the transmission assembly comprises a mounting box fixed on the door leaf main body, a driving rod which is rotatably connected with the mounting box and is perpendicular to the door leaf main body, a rotating wheel which is arranged outside the mounting box and is fixedly connected with the driving rod, a driving gear which is sleeved on the driving rod and is fixedly connected with the driving rod, a first transmission gear which is rotatably connected in the mounting box and a second transmission gear which is rotatably connected in the mounting box; the driving gear is meshed with the first transmission gear, and the first transmission gear is meshed with the second transmission gear; the handle rod is far away from the one end of intercommunication pole is seted up along the drive hole that handle rod length direction extends, be fixed with on the first drive gear with drive hole inner wall sliding connection's first pull axle, be fixed with on the second drive gear with another drive hole inner wall sliding connection's second pull axle.

When an operator opens and closes the civil air defense door, the operator needs to rotate the handle bars at the two sides to open and close the civil air defense door, so that the operation is inconvenient, and a transmission assembly capable of operating the handle bars at the two sides simultaneously is additionally arranged; through adopting above-mentioned technical scheme, operating personnel rotates the runner, and the actuating lever rotates with drive gear, rotates with the first drive gear of drive gear meshing, and second drive gear also rotates thereupon, and first axle and the second of drawing are drawing the axle and are moving along with the rotation of gear, are driving two handle bars and are up or down rotating simultaneously to make things convenient for operating personnel to operate two sets of locking device simultaneously.

Preferably, the number of teeth of the first transmission gear is several times the number of teeth of the driving gear, and the number of teeth of the first transmission gear is the same as that of the second transmission gear.

When an operator opens and closes the civil air defense door, the civil air defense door is of a steel structure, and in order to meet the use requirements of the civil air defense door, the locking devices on the door leaf main bodies are all of the steel structure, so that the weight is large, and the operation of the operator is very laborious; through adopting above-mentioned technical scheme, the number of teeth of first transmission gear is several times the number of teeth of drive gear, and first transmission gear and drive gear form reduction gear's structure, play the effect that the speed reduction increased the turn round, prevent that operating personnel from closing because locking device's weight is too big enough, and operating personnel rotates drive gear with less power, and first transmission gear also rotates thereupon with second drive gear to made things convenient for operating personnel to open and close people's air defense door.

Preferably, a sealing convex strip is fixed on the side wall of the door leaf main body close to the door frame, and a sealing rubber strip embedded with the sealing convex strip is fixed in the door frame.

Through adopting above-mentioned technical scheme, when operating personnel closed the people's air defense door, the joint strip looks gomphosis on the sealed sand grip on the door leaf main part and the door frame for the people's air defense door is isolated mutually with external environment, thereby increases the leakproofness of people's air defense door.

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

when the civil air defense door is impacted, an operator rotates the rotating hand rods on the door leaf main body, the two groups of locking devices are locked with the two side frames of the door frame, and the locking rod pieces arranged at the upper end and the lower end in the locking devices are embedded into the locking grooves, so that the door leaf main body is supported against the impact from top to bottom, and the impact resistance of the door leaf is improved;

when an operator needs to open the civil air defense door from the outside, the operator rotates the hand lever rod outside the door, the connecting rod and the rotating rod rotate along with the hand lever rod, the rotating rod drives the movable rod to rotate, and the fixed lock head is further rotated to be separated from the locking groove, so that the civil air defense door can be conveniently opened and closed by the operator outside the door;

when an operator opens and closes the civil air defense door, the operator rotates the rotating wheel, the driving rod rotates with the driving gear, the first transmission shaft meshed with the driving gear rotates, the second transmission shaft also rotates along with the rotating wheel, the first traction shaft and the second traction shaft move along with the rotation of the gear, and the two handle rods are driven to simultaneously rotate upwards or downwards, so that the operator can conveniently operate the two groups of locking devices simultaneously.

Drawings

Fig. 1 is a schematic structural view of a steel door leaf according to an embodiment of the present invention.

FIG. 2 is a schematic structural diagram of a transmission assembly according to an embodiment of the present application.

Fig. 3 is an enlarged schematic view of a portion a in fig. 1.

Description of reference numerals: 1. a door frame; 11. sealing rubber strips; 12. a locking groove; 2. a door leaf main body; 21. sealing the convex strips; 3. a locking device; 31. rotating the hand lever; 311. a handle bar; 3111. a drive aperture; 312. rotating the rod; 313. a communication rod; 32. a movable rod; 321. a limiting hole; 33. locking the rod member; 331. rotating the projection; 332. a rotating ring; 333. fixing the lock head; 334. a boost rod; 4. a transmission assembly; 41. mounting a box; 411. a movable groove; 42. a rotating wheel; 43. a drive gear; 44. a drive rod; 45. a first drive gear; 451. a first traction shaft; 46. a second transmission gear; 461. a second traction shaft.

Detailed Description

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

The embodiment of the application discloses steel construction door leaf. Referring to fig. 1, the steel structure door leaf includes a door frame 1, a door leaf main body 2, a locking device 3, and a transmission assembly 4. Door frame 1 is the rectangle framework, is made by the carbon steel, and door frame 1 is vertical to be set up, and four interior angles of door frame 1 are the fillet, and door frame 1 gomphosis is on the wall and fixed with the wall. A sealing rubber strip 11 is fixed on the door frame 1, the sealing rubber strip 11 is rectangular and made of elastic rubber, the sealing rubber strip 11 is arranged on the side wall of the door frame 1 close to the door leaf main body 2, and the sealing rubber strip 11 surrounds the inner frame of the door frame 1. The door leaf main body 2 is rectangular plate-shaped and made of carbon steel, the door leaf main body 2 is vertically arranged, and the door leaf main body 2 is hinged with one side of the vertical frame edge of the door frame 1. The vertical setting of the axis of rotation of door leaf main part 2, door leaf main part 2 rotates round the direction that the wall is on a parallel with the vertical lateral wall of 1 main part of door frame, and door leaf main part 2 when closing, and one side lateral wall and the wall laminating of door leaf main part 2 support tightly. A sealing convex strip 21 is fixed on the door leaf main body 2, the sealing convex strip 21 is a rectangular strip bent into a rectangular frame shape, and the sealing convex strip 21 is vertically arranged on the side wall of the door leaf main body 2 close to the door frame 1. The sealing convex strip 21 is arranged around the periphery of the side wall of one side of the door leaf, and when the door leaf main body 2 is closed, the sealing convex strip 21 is embedded in the sealing rubber strip 11.

Referring to fig. 1, the locking device 3 includes a turning hand lever 31, a movable lever 32, and a locking bar 33 for fixing the door main body 2 to the door frame 1. The rotating handle bar 31 includes a handle bar 311, a rotating bar 312 and a communicating bar 313, the handle bar 311 is rectangular, the handle bar 311 is parallel to the door main body 2, and the handle bar 311 is disposed on the side wall of the door main body 2 far from the door frame 1. The rotating rod 312 is a slat, the rotating rod 312 is parallel to the door leaf main body 2, the rotating rod 312 is disposed on the side wall of the door leaf main body 2 near the door frame 1, and the rotating rod 312 is parallel to the handle rod 311. The communication rod 313 is a circular rod, and the communication rod 313 is provided perpendicular to the plate surface of the door main body 2. One end of the connection rod 313 is fixedly connected with one end of the handle rod 311, the other end of the connection rod passes through the door leaf main body 2 and is fixedly connected with one end of the rotating rod 312, and the connection rod 313 is rotatably connected with the door leaf main body 2.

Referring to fig. 1, the locking rod 33 includes a rotating protrusion 331, a rotating ring 332, a fixed locking head 333, and a moving rod 334, the rotating protrusion 331 is cylindrical, an axis of the rotating protrusion 331 is horizontally disposed, one end of the rotating protrusion 331 is fixedly connected to a side wall of the door main body 2 close to the door frame 1, and the axis of the rotating protrusion 331 is perpendicular to the side wall of the door main body 2. The rotating ring 332 is annular, the axis of the rotating ring 332 coincides with the axis of the rotating protrusion 331, the rotating ring 332 is sleeved on the rotating protrusion 331, and the inner wall of the rotating ring 332 is in sliding fit with the cylindrical surface of the rotating protrusion 331. The fixed lock head 333 is in a round rod shape, the axis of the fixed lock head 333 is perpendicular to and intersected with the axis of the rotating ring 332, one end of the fixed lock head 333 is fixedly connected with the outer wall of the rotating ring 332, the other end of the fixed lock head 333 extends outwards, and the end face of one end, away from the rotating ring 332, of the fixed lock head 333 is a spherical surface. When the door leaf main part 2 is closed by an operator, in the process that the fixed lock head 333 enters the locking groove 12, the spherical surface of the fixed lock head 333 is always abutted against the inner wall of the locking groove 12, and the diameter of the fixed lock head 333 from the end part to the middle part is larger and larger, so that the door leaf main part 2 is fixed into the door frame 1 more and more tightly, and the door leaf main part 2 is connected with the door frame 1 more firmly.

Referring to fig. 1, the assist lever 334 is shaped like a slat, the side wall of the assist lever 334 parallel to the panel of the door leaf main body 2 is shaped like an isosceles triangle, the triangular side wall of the assist lever 334 is parallel to the door leaf main body 2, and one end of the assist lever 334 is fixedly connected to the outer wall of the rotating ring 332. The symmetry axis of the triangular side wall of the assist lever 334 is perpendicular to the axis of the rotating ring 332, and the included angle between the symmetry axis of the triangular side wall of the assist lever 334 and the axis of the fixed lock head 333 is 135 degrees. Two locking levers 33 are provided, and the two locking levers 33 are respectively provided on the upper and lower sides of the turning lever 31.

Referring to fig. 1, the movable rod 32 is a rectangular rod, the movable rod 32 is vertically disposed, and the movable rod 32 is disposed on a side of the rotating handle bar 31 near the middle of the door main body 2. The movable rod 32 is disposed between the two locking rods 33, and two ends of the movable rod 32 are respectively hinged to one ends of the two assist rods 334 away from the rotating ring 332. The movable rod 32 is provided with a limiting hole 321, the limiting hole 321 is arranged on the vertical side wall of one side of the movable rod 32 perpendicular to the door leaf main body 2, the limiting hole 321 is arranged in the middle of the movable rod 32, and the opening of the limiting hole 321 is a vertically arranged rectangle. The one end that the dwang 312 kept away from the connecting rod 313 sets up in spacing hole 321, and the dwang 312 is on a parallel with the both sides lateral wall of door leaf body and is articulated with the inside wall in spacing hole 321, and the connecting rod 313 rotates respectively to and is 90 with the interior top surface of spacing hole 321, contained angle between the interior bottom surface when offseting. Two sets of locking devices 3 are provided, and the two sets of locking devices 3 are respectively provided on both sides of the door leaf main body 2. Locking groove 12 has been seted up to 1 both sides inside wall of door frame, and locking groove 12 opening is the rectangle, and locking groove 12 is equipped with four, and four locking grooves 12 set up in the last lower extreme of the vertical inside wall in door frame 1 both sides.

Referring to fig. 2, the transmission assembly 4 includes a mounting box 41, a rotating wheel 42, a driving gear 43, a driving rod 44, a first transmission gear 45 and a second transmission gear 46, the mounting box 41 is rectangular box-shaped, the mounting box 41 is vertically disposed, the mounting box 41 is fixedly connected to a side wall of the door leaf main body 2 on which the handle bar 311 is disposed, and an opening is formed on a side of the mounting box 41 close to the door leaf main body 2. Referring to fig. 3, the mounting box 41 is provided with a movable slot 411, the movable slot 411 is provided on the side wall of the mounting box 41 close to the two-side rotating handle bar 31, the opening of the movable slot 411 is rectangular, and one end of the handle bar 311 far away from the connecting bar 313 penetrates through the movable slot 411 and is disposed in the mounting box 41.

Referring to fig. 2, the turning wheel 42 is a circular wheel, the turning wheel 42 is disposed on one side of the mounting box 41 far away from the door main body 2, the turning wheel 42 is vertically disposed, and an axis of the turning wheel 42 is perpendicular to a panel surface of the door main body 2. The drive gear 43 is a spur gear, the drive gear 43 is provided in the mounting box 41, and the axis of the drive gear 43 and the axis of the runner 42 are provided so as to overlap each other. The driving rod 44 is a circular rod, the driving rod 44 is disposed between the rotating wheel 42 and the driving gear 43, and an axis of the driving rod 44 coincides with an axis of the driving gear 43. The driving rod 44 penetrates through the side wall of the mounting box 41 far away from the door body 2, one end of the driving rod 44 is fixedly connected with one side of the rotating wheel 42 close to the door body 2, and the other end of the driving rod 44 is fixedly connected with the side wall of the driving gear 43 far away from the door body 2.

Referring to fig. 2, the first transmission gear 45 is a spur gear, the first transmission gear 45 is disposed in the mounting box 41, and the first transmission gear 45 is rotatably connected to the inner side wall of one side of the mounting box 41 far away from the door leaf main body 2. The first transmission gear 45 is arranged on the lower side of the driving gear 43, the axis of the first transmission gear 45 is parallel to the axis of the driving gear 43, the number of teeth of the first transmission gear 45 is several times that of the driving gear 43, and the first transmission gear 45 is meshed with the driving gear 43. Referring to fig. 3, the second transmission gear 46 is a spur gear, the second transmission gear 46 is disposed in the mounting box 41, and an axis of the second transmission gear 46 and an axis of the first transmission gear 45 are disposed in parallel on the same horizontal plane. The second transmission gear 46 is rotatably connected with the inner side wall of one side of the mounting box 41 far away from the door leaf main body 2, the number of teeth of the second transmission gear 46 is the same as that of the first transmission gear 45, and the second transmission gear 46 is meshed with the first transmission gear 45.

Referring to fig. 2 and 3, the handle bar 311 is provided with a driving hole 3111, the driving hole 3111 is formed in a side wall of the handle bar 311 parallel to the door main body 2, the driving hole 3111 is formed in an end of the handle bar 311 away from the communication bar 313, and the driving hole 3111 is rectangular. The first transmission gear 45 is provided with a first traction shaft 451, the first traction shaft 451 is arranged on one side of the first transmission gear 45 close to the door main body 2, the axis of the first traction shaft 451 is parallel to the axis of the first transmission gear 45, and the first traction shaft 451 is close to the second transmission gear 46. One end of the first pulling shaft 451 is fixedly connected to the first transmission gear 45, and the other end is disposed in the driving hole 3111 and slidably engaged with the inner wall of the driving hole 3111. A second traction shaft 461 is fixed on the second transmission gear 46, the second traction shaft 461 is arranged at one side of the second transmission gear 46 close to the door leaf main body 2, the axis of the second traction shaft 461 is arranged in parallel with the axis of the second transmission gear 46, and the second traction shaft 461 is close to the first transmission gear 45. One end of the second traction shaft 461 is fixedly connected to the second transmission gear 46, and the other end is disposed in the driving hole 3111 of the other handle bar 311 and slidably engaged with the inner wall of the driving hole 3111. When an operator opens and closes the civil air defense door, the operator rotates the rotating wheel 42 with smaller force, when the driving gear 43 with fewer teeth is meshed with the first transmission gear 45 with more teeth, a structure of a speed reduction gear is formed, the effect of reducing speed and increasing torque is achieved, the driving rod 44 rotates with the driving gear 43, the first transmission gear 45 meshed with the driving gear 43 rotates, the second transmission gear 46 can also rotate along with the first transmission gear, the first traction shaft 451 and the second traction shaft 461 move along with the rotation of the gears, the two handle bars 311 are driven to simultaneously rotate upwards or downwards, and therefore the civil air defense door can be conveniently closed by the operator.

The implementation principle of a steel structure door leaf in the embodiment of the application is as follows: before the civil air defense door is impacted, an operator closes the civil air defense door firstly, the operator rotates the rotating wheels 42, the rotating wheels 42 drive the transmission assembly 4, the driving assembly drives the two groups of locking devices 3 to operate, the handle rod 311 rotates, the rotating rod 312 and the rotating rod 312 rotate along with the rotating rod, the movable rod 32 hinged with the rotating rod 312 moves in the vertical direction, the movable rod 32 drives the auxiliary rod 334 to rotate around the rotating ring 332, the rotating ring 332 and the fixed lock head 333 rotate along with the rotating rod, and the fixed lock head 333 rotates into the locking groove 12; two sets of locking devices 3 are locked with the two sides of the door frame 1, and locking rods 33 arranged at the upper end and the lower end in the locking devices 3 are embedded into the locking grooves 12, so that the door leaf main body 2 is supported against impact from top to bottom, and the impact resistance of the door leaf main body 2 is improved.

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 (8)

1. The utility model provides a steel construction door leaf which characterized in that: the door comprises a door frame (1), a door leaf main body (2) hinged with the door frame (1) and two groups of locking devices (3) arranged on the door leaf main body (2) and close to the vertical edges at two sides of the door frame (1); a plurality of locking grooves (12) distributed along the vertical direction are respectively formed on the frame edges on the two sides of the door frame (1); the locking device (3) comprises a rotating hand lever (31) with one end rotatably connected with the door leaf main body (2), a movable rod (32) which is hinged with the other end of the rotating hand lever (31) and is vertically arranged, and a plurality of locking rod pieces (33) with one ends embedded into the locking grooves (12); the middle part of the locking rod piece (33) is rotationally connected with the door leaf main body (2), and one end, far away from the locking groove (12), of the locking rod piece (33) is hinged to the movable rod (32).

2. A steel structural door leaf according to claim 1, wherein: the locking rod piece (33) comprises a rotating protrusion (331) fixed on the door leaf main body (2), a rotating ring (332) rotatably connected with the rotating protrusion (331), a fixed lock head (333) fixedly connected with the rotating ring (332) and a booster rod (334) fixedly connected with the rotating ring (332); keep away from helping move pole (334) the one end of rotating ring (332) with movable rod (32) are articulated, fixed tapered end (333) with help move pole (334) set up respectively in the both sides of rotating ring (332) axis, the axis of fixed tapered end (333) is the level setting in locking groove (12), the axis of fixed tapered end (333) breaks away from be vertical setting when locking groove (12), help move pole (334) with contained angle between fixed tapered end (333) is 135.

3. A steel structural door leaf according to claim 2, wherein: the end face of one end, embedded into the locking groove (12), of the fixed lock head (333) is a spherical surface, and the spherical surface of the fixed lock head (333) is tightly abutted against the inner wall of one side, close to the door leaf main body (2), of the locking groove (12).

4. A steel structural door leaf according to claim 1, wherein: the rotating handle rod (31) comprises a handle rod (311) arranged on the side wall of the door leaf main body (2) facing the outside of the door, a rotating rod (312) arranged on the side of the door leaf main body (2) far away from the handle rod (311), and a communication rod (313) fixed between the handle rod (311) and the rotating rod (312); the communicating rod (313) penetrates through the door leaf main body (2) and is rotatably connected with the door leaf main body (2), the handle rod (311) and the rotating rod (312) are arranged in parallel, and the rotating rod (312) is hinged to the movable rod (32).

5. A steel structural door leaf according to claim 4, characterized in that: spacing hole (321) have been seted up at movable rod (32) middle part, dwang (312) with the vertical inside wall in spacing hole (321) rotates to be connected, dwang (312) are in rotation contained angle in spacing hole (321) is 90.

6. A steel structural door leaf according to claim 5, characterized in that: a transmission assembly (4) for simultaneously driving the two groups of locking devices (3) to operate is mounted on the side wall of one side, close to the handle rod (311), of the door leaf main body (2); the transmission assembly (4) comprises a mounting box (41) fixed on the door leaf main body (2), a driving rod (44) which is rotatably connected with the mounting box (41) and is perpendicular to the door leaf main body (2), a rotating wheel (42) which is arranged outside the mounting box (41) and is fixedly connected with the driving rod (44), a driving gear (43) which is sleeved on the driving rod (44) and is fixedly connected with the driving rod, a first transmission gear (45) which is rotatably connected in the mounting box (41) and a second transmission gear (46) which is rotatably connected in the mounting box (41); the driving gear (43) is meshed with the first transmission gear (45), and the first transmission gear (45) is meshed with the second transmission gear (46); one end of the handle rod (311) far away from the communication rod (313) is provided with a driving hole (3111) extending along the length direction of the handle rod (311), a first traction shaft (451) connected with the inner wall of the driving hole (3111) in a sliding mode is fixed on the first transmission gear (45), and a second traction shaft (461) connected with the inner wall of the other driving hole (3111) in a sliding mode is fixed on the second transmission gear (46).

7. The steel structural door leaf according to claim 6, wherein: the number of teeth of first drive gear (45) is many times the number of teeth of drive gear (43), first drive gear (45) with the number of teeth of second drive gear (46) is the same.

8. A steel structural door leaf according to claim 1, wherein: a sealing convex strip (21) is fixed on the side wall of one side, close to the door frame (1), of the door leaf main body (2), and a sealing rubber strip (11) embedded with the sealing convex strip (21) is fixed in the door frame (1).

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