Auxiliary device for hoisting and mounting ultrahigh and overweight fireproof door

Abstract

The invention discloses an auxiliary device for hoisting and mounting an ultrahigh and overweight fireproof door, which relates to the technical field of hoisting and mounting of fireproof doors, and adopts the technical scheme that the auxiliary device comprises an auxiliary mechanism I for hoisting and moving the fireproof door and an auxiliary mechanism II which is arranged behind a door frame and is used for moving the fireproof door; the first auxiliary mechanism comprises an L-shaped support, a lifting clamping unit and a first electromagnetic adsorption unit. A fixing assembly is arranged on the fireproof door; the second auxiliary mechanism comprises a [-shaped frame, a sliding groove, a sliding block movably arranged in the sliding groove, a second electromagnetic adsorption unit, a fixed bottom plate and a hydraulic telescopic rod. The device has the beneficial effects that accurate positioning and stable movement of the fireproof door are achieved, the mounting precision is improved, and the problem of positioning deviation of traditional hoisting is solved. Manual adjustment is reduced through mechanical operation, efficiency is improved, and labor intensity is reduced. And the universal wheels, the balancing weights and the electromagnetic adsorption units enhance the stability and the safety.

Description

Technical Field

[0001] The present invention relates to the technical field of hoisting and installing fire doors, and particularly to an auxiliary device for hoisting and installing ultra-high and ultra-heavy fire doors. Background Art

[0002] In building construction, the installation of ultra-high and ultra-heavy fire doors is a technical problem. The existing installation methods mainly rely on traditional crane hoisting and manual adjustment, and have the following deficiencies: (1) Insufficient positioning accuracy: Traditional hoisting methods are difficult to accurately control the installation position of fire doors, and deviations are likely to occur.

[0003] (2) Low installation efficiency: Manual adjustment requires a lot of time and manpower, and in the case of ultra-high and ultra-heavy, the operation difficulty is extremely high.

[0004] (3) Poor safety: Ultra-high and ultra-heavy fire doors are prone to shaking during hoisting, presenting safety hazards.

[0005] (4) Poor applicability: Existing equipment is difficult to adapt to fire doors of different sizes and weights, and the versatility is insufficient.

[0006] Therefore, a hoisting and installing auxiliary device that can improve installation accuracy, efficiency and safety is needed. Summary of the Invention

[0007] In order to achieve the above-mentioned invention purpose and address the above technical problems, the present invention provides an auxiliary device for hoisting and installing ultra-high and ultra-heavy fire doors.

[0008] Its technical solution is as follows: It includes an auxiliary mechanism one for hoisting and moving the fire door and an auxiliary mechanism two for moving the fire door arranged behind the door frame; The auxiliary mechanism one includes an L-shaped bracket, a lifting and clamping unit arranged at the top of the L-shaped bracket, and an electromagnetic adsorption unit one arranged on one side of the L-shaped bracket; A fixing component is arranged on the fire door; The auxiliary mechanism two includes a U-shaped frame, a chute arranged on one side of the U-shaped frame, a slider movably arranged in the chute, an electromagnetic adsorption unit two arranged on the side wall of the slider, a fixed bottom plate arranged on the side of the U-shaped frame away from the door frame, and a hydraulic telescopic rod is arranged between the fixed bottom plate and the side wall of the U-shaped frame; A universal wheel with a brake is arranged at the bottom of the L-shaped bracket.

[0009] The L-shaped bracket includes a horizontal plate and a vertical plate arranged at the top of one end of the horizontal plate; A 7-shaped plate is arranged at the top of the vertical plate.

[0010] The lifting and clamping unit includes an electric telescopic plate arranged on the lower surface of one end of the 7-shaped plate and two clamping plates arranged below the electric telescopic plate. The fixed end of the electric telescopic plate is fixedly connected to the 7-shaped plate, and a connecting plate one is arranged at the end of the telescopic end of the electric telescopic plate; Two vertical plates are arranged at both ends of the lower surface of the connecting plate one. Electric telescopic rods one are arranged on both vertical plates. The fixed ends of the electric telescopic rods one are fixedly connected to the side wall of the connecting plate one, and the end of the telescopic end of the electric telescopic rod one is fixedly connected to the clamping plate; The telescopic ends of the two electric telescopic rods one are arranged oppositely, and the two clamping plates approach each other to clamp the fire door.

[0011] The fixing component includes a suction plate one, a suction plate two, and a connecting plate two; The suction plate one is arranged as a rectangular plate, and threaded holes are opened at both ends; One end of the suction plate two is fixedly provided with an L-shaped plate, and a threaded hole is opened on one side plate of the L-shaped plate at one end of the suction plate two; The connecting plate two is arranged as an L-shaped plate. A threaded hole is opened on one side plate of the connecting plate two, and a plug board is arranged at the end of the other side plate; A slot matching the plug board is opened at one end of the suction plate two; The threaded holes at both ends of the suction plate one, the threaded hole on the L-shaped plate at one end of the suction plate two, and the threaded hole on the connecting plate two are fixedly connected by bolts; The suction plate one, the suction plate two, the L-shaped plate at one end of the suction plate two, and the connecting plate two are combined to form a closed rectangular frame, which hoops the fire door from the outside.

[0012] The electromagnetic adsorption unit one includes an electric telescopic rod two arranged on the side wall of the vertical plate of the L-shaped bracket and an electromagnetic plate one arranged at the end of the electric telescopic rod two; The fixed end of the electric telescopic rod two is fixedly connected to the side wall of the vertical plate, and the end of the telescopic end of the electric telescopic rod two is fixedly connected to the electromagnetic plate one; The electromagnetic plate one and the suction plate one are connected by electromagnetic attraction. They adsorb when powered on and automatically separate when powered off.

[0013] The electromagnetic adsorption unit two includes an electromagnetic plate two arranged on the side wall of the slider; The electromagnetic plate two and the suction plate two are connected by electromagnetic attraction. They adsorb when powered on and automatically separate when powered off.

[0014] The groove of the U-shaped frame faces the door frame, and the chute is opened at the groove of the U-shaped frame; Both ends of the U-shaped frame are provided with top plates that abut against the side walls of the door frame; A lead screw is arranged in the chute, and both ends of the lead screw are rotatably connected to the inner wall of the chute; The slider is thread - matched with the lead screw.

[0015] Connection ear plates are provided on the side wall of the C - shaped frame and the upper surface of the fixed base plate. The fixed end of the hydraulic telescopic rod is connected to the connection ear plate on the upper surface of the fixed base plate. A rotating shaft is provided at the telescopic end of the hydraulic telescopic rod, and the rotating shaft is hinged to the connection ear plate on the side wall of the C - shaped frame.

[0016] The fixed base plate is fixedly connected to the ground by bolts.

[0017] A number of counterweight blocks are provided on the upper surface of the horizontal plate of the L - shaped bracket.

[0018] Both electromagnetic plate one and electromagnetic plate two are electromagnetic plates with electromagnets, which generate magnetic fields when energized. Adsorption plate one and adsorption plate two, as the adsorbed components, are made of low - carbon steel plates or other magnetic conductive materials.

[0019] The electric telescopic plate, the electric telescopic rod, and the lead screw are all driven by motors. This is prior art and will not be elaborated here.

[0020] The beneficial effects brought by the technical solution provided by the embodiment of the present invention are as follows: (1) Improve the installation accuracy The auxiliary mechanism one clamps the fire door through the electric telescopic plate and the clamping plate, and moves it to the door frame by the universal wheels. The electric telescopic plate can accurately control the moving distance and position of the fire door, making the fire door parallel to the door frame and the bottom in contact with the ground. Then, through the cooperation of the electromagnetic adsorption unit one and the electromagnetic adsorption unit two, the gradual movement and precise positioning of the fire door are realized, solving the problem of insufficient positioning accuracy of the traditional hoisting method and effectively avoiding installation position deviation. The cooperation of the lead screw and the slider in the auxiliary mechanism two can perform fine adjustment when the fire door is close to the installation position, ensuring that the fire door can accurately approach the installation position, further improving the installation accuracy. (2) Improve the installation efficiency Through the coordinated work of components such as the electric telescopic plate, the electric telescopic rod, the electromagnetic adsorption unit, and the hydraulic telescopic rod, the device realizes the mechanized operation of the hoisting, moving, and installation processes of the fire door, reduces the manual adjustment links and workload, greatly shortens the installation time, and improves the installation efficiency. The fixed components can be adjusted and combined according to different sizes of fire doors, enabling the device to be applicable to the installation of ultra - high and overweight fire doors of various specifications. There is no need to frequently replace equipment or perform complex adjustments for different fire doors, improving the versatility and applicability of the equipment and further enhancing the installation efficiency. (3) Enhance safety The universal wheels with brakes installed at the bottom of the L-shaped bracket can provide stable support during movement and fix the position by braking when needed to prevent the device from sliding. Meanwhile, the counterweight blocks installed on the upper surface of the cross plate can be adjusted according to the weight and height of the fire door, increasing the stability of the device, avoiding shaking when hoisting ultra-high and overweight fire doors, and reducing potential safety hazards. Both the electromagnetic adsorption unit one and the electromagnetic adsorption unit two adopt electromagnetic suction connection. When powered on, they adsorb firmly and automatically separate when powered off. This connection method is reliable and easy to control, and can stably fix the fire door during the installation process, preventing it from accidentally falling off during hoisting and movement, thus ensuring the safety of the installation process. (4) Reduce labor intensity The entire installation process is mainly completed by the automatic operation of components such as the electric telescopic plate, electric telescopic rod, and electromagnetic adsorption unit. The operator only needs to perform simple equipment operations and monitoring, without the need for a lot of physical labor, such as manual adjustment and support in traditional hoisting, greatly reducing labor intensity and improving the comfort and safety of work. Description of the drawings

[0021] Figure 1 Structural schematic diagram of moving the fire door through the auxiliary mechanism one in the embodiment of the present invention Figure 1 .

[0022] Figure 2 Structural schematic diagram of moving the fire door through the auxiliary mechanism one in the embodiment of the present invention Figure 2 .

[0023] Figure 3 It is Figure 2 Partial enlarged view A of...

[0024] Figure 4 Structural schematic diagram of moving the fire door through the auxiliary mechanism two after the fire door is separated from the auxiliary mechanism one in the embodiment of the present invention.

[0025] Figure 5 Structural schematic diagram of the auxiliary mechanism one in the embodiment of the present invention.

[0026] Figure 6 It is Figure 5 Partial enlarged view B of...

[0027] Figure 7 Structural schematic diagram of the fixing component in the embodiment of the present invention.

[0028] Figure 8 Structural schematic diagram of the adsorption plate two in the embodiment of the present invention.

[0029] Figure 9 Structural schematic diagram of the connecting plate two in the embodiment of the present invention.

[0030] Figure 10 This is a schematic structural diagram of the slider and the second electromagnetic plate in the embodiment of the present invention.

[0031] Figure 11 This is a schematic structural diagram of the C-shaped frame in the embodiment of the present invention.

[0032] Among them, the reference numerals are: 100, fire door; 200, door frame; 1, L-shaped bracket; 1001, horizontal plate; 1002, vertical plate; 101, universal wheel; 102, counterweight; 2, lifting clamping unit; 4, fixing component; 5, C-shaped frame; 501, top plate; 6, chute; 7, slider; 8, fixed bottom plate; 9, hydraulic telescopic rod; 11, 7-shaped plate; 12, electric telescopic plate; 13, connecting plate one; 14, clamping plate; 1301, vertical plate; 1302, electric telescopic rod one; 401, adsorption plate one; 402, adsorption plate two; 403, connecting plate two; 4031, plug board; 4021, slot; 15, electric telescopic rod two; 16, electromagnetic plate one; 17, electromagnetic plate two; 18, lead screw; 19, connecting ear plate. Detailed implementation manners

[0033] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Of course, the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0034] It should be noted that, without conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0035] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more.

[0036] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] Embodiment 1 Referring to Figures 1 to 11 , the present invention provides an auxiliary device for hoisting and installing an ultra-high and overweight fire door, including an auxiliary mechanism one for hoisting and moving the fire door 100 and an auxiliary mechanism two for moving the fire door 100 arranged behind the door frame 200; The auxiliary mechanism one includes an L-shaped bracket 1, a lifting and clamping unit 2 arranged at the top of the L-shaped bracket 1, and an electromagnetic adsorption unit one arranged on one side of the L-shaped bracket 1; A fixing component 4 is arranged on the fire door 100; The auxiliary mechanism two includes a C-shaped frame 5, a chute 6 arranged on one side of the C-shaped frame 5, a slider 7 movably arranged in the chute 6, an electromagnetic adsorption unit two arranged on the side wall of the slider 7, a fixed bottom plate 8 arranged on the side of the C-shaped frame 5 away from the door frame 200, and a hydraulic telescopic rod 9 is arranged between the fixed bottom plate 8 and the side wall of the C-shaped frame 5; A universal wheel 101 with a brake is arranged at the bottom of the L-shaped bracket 1.

[0038] The L-shaped bracket 1 includes a horizontal plate 1001 and a vertical plate 1002 arranged at the top of one end of the horizontal plate 1001; A 7-shaped plate 11 is arranged at the top of the vertical plate 1002.

[0039] The lifting and clamping unit 2 includes an electric telescopic plate 12 arranged on the lower surface of one end of the 7-shaped plate 11 and two clamping plates 14 arranged below the electric telescopic plate 12. The fixed end of the electric telescopic plate 12 is fixedly connected to the 7-shaped plate 11, and a connecting plate one 13 is arranged at the end of the telescopic end of the electric telescopic plate 12; Two vertical plates 1301 are arranged at both ends of the lower surface of the connecting plate one 13, and electric telescopic rods one 1302 are arranged on both vertical plates 1301. The fixed ends of the electric telescopic rods one 1302 are fixedly connected to the side walls of the connecting plate one 13, and the ends of the telescopic ends of the electric telescopic rods one 1302 are fixedly connected to the clamping plates 14; The telescopic ends of the two electric telescopic rods one 1302 are arranged oppositely, and the two clamping plates 14 approach each other to clamp the fire door 100.

[0040] The fixing component 4 includes an adsorption plate one 401, an adsorption plate two 402, and a connecting plate two 403; The adsorption plate 401 is configured as a rectangular plate with threaded holes at both ends; An L-shaped plate is fixedly provided at one end of the second adsorption plate 402, and a threaded hole is provided on a side plate of the L-shaped plate at one end of the second adsorption plate 402; The second connecting plate 403 is configured as an L-shaped plate, a threaded hole is provided on one side plate of the second connecting plate 403, and a plug plate 4031 is provided at the end of the other side plate; A slot 4021 matching with the plug board 4031 is provided at one end of the second adsorption board 402; The threaded holes at both ends of the first adsorption plate 401 are fixedly connected with the threaded holes on the L-shaped plate at one end of the second adsorption plate 402 and the threaded holes on the second connection plate 403 by bolts; The adsorption plate 1 401 , the adsorption plate 2 402 , the L-shaped plate at one end of the adsorption plate 2 402 , and the connecting plate 2 403 are combined to form a closed rectangular frame, which clamps the fire door 100 from the outside.

[0041] The electromagnetic adsorption unit 1 includes an electric telescopic rod 2 15 arranged on the side wall of the vertical plate 1002 of the L-shaped bracket 1 and an electromagnetic plate 16 arranged at the end of the electric telescopic rod 2 15; The fixed end of the electric telescopic rod 2 15 is fixedly connected to the side wall of the vertical plate 1002, and the telescopic end of the electric telescopic rod 2 15 is fixedly connected to the electromagnetic plate 1 16; The electromagnetic plate 16 and the adsorption plate 401 are connected by electromagnetic attraction, adsorbed when powered on, and automatically separated when powered off.

[0042] The second electromagnetic adsorption unit includes a second electromagnetic plate 17 arranged on the side wall of the slider 7; The electromagnetic plate 17 and the adsorption plate 402 are connected by electromagnetic attraction. They are adsorbed when power is on and automatically separated when power is off.

[0043] The groove of the 匚-shaped frame 5 is arranged toward the door frame 200, and the slide groove 6 is opened in the groove of the 匚-shaped frame 5; Both ends of the 匚-shaped frame 5 are provided with top plates 501 that abut against the side walls of the door frame 200; A screw rod 18 is provided in the chute 6, and both ends of the screw rod 18 are rotatably connected to the inner wall of the chute 6; The sliding block 7 is threadably matched with the screw rod 18 .

[0044] The side walls of the 匚-shaped frame 5 and the upper surface of the fixed bottom plate 8 are both provided with connecting ear plates 19; The fixed end of the hydraulic telescopic rod 9 is connected to the connecting ear plate 19 on the upper surface of the fixed base plate 8. A rotating shaft is set at the telescopic end of the hydraulic telescopic rod 9, and the rotating shaft is hinged to the connecting ear plate 19 on the side wall of the 匚-shaped frame 5.

[0045] The fixed base plate 8 is fixedly connected to the ground by bolts.

[0046] On the upper surface of the horizontal plate 1001 of the L-shaped bracket 1, a number of counterweights 102 are provided.

[0047] Both the electromagnetic plate one 16 and the electromagnetic plate two 17 are electromagnetic plates with electromagnets, which generate a magnetic field when energized; The adsorption plate one 401 and the adsorption plate two 402, as the components to be adsorbed, are made of low-carbon steel plates or other magnetically conductive materials.

[0048] The electric telescopic plate, the electric telescopic rod, and the lead screw are all driven by motors. This is prior art and will not be elaborated here.

[0049] When the present invention is used, first, a rectangular frame formed by combining the adsorption plate one 401, the adsorption plate two 402, the L-shaped plate at one end of the adsorption plate two 402, and the connecting plate two 403 is buckled on the outer wall of the fire door 100, and it is fixed by bolts; The fire door 100 is clamped by the two clamping plates 14 approaching each other. Then, the electric telescopic plate 12 retracts, and the movement of the fire door is realized through the movement of the universal wheels 101; Because it is an ultra-high and overweight fire door, the counterweights 102 can be placed as needed to maintain the stability of the device; When reaching the door frame 200, the fire door is parallel to the door frame. The end of the electric telescopic plate 12 moves downward, driving the bottom of the fire door to contact the ground. The electromagnetic plate one 16 and the adsorption plate one 401 are electromagnetically attracted and connected, and are adsorbed when energized; the two electric telescopic rods one 1302 retract, and the two clamping plates stop clamping the fire door. The fire door is driven to move towards the middle of the door frame by the push of the electric telescopic rod two 15. When the adsorption plate two 402 touches the electromagnetic plate two 17, the electromagnetic plate one 16 is powered off, and the electromagnetic plate one 16 and the adsorption plate one 401 are separated. The electromagnetic plate two 17 is powered on to adsorb the adsorption plate two 402; At this time, the auxiliary mechanism one can be moved away to vacate the installation area; Then, the lead screw rotates, driving the slider and thus driving the fire door to move towards the edge of the door frame. When almost reaching the installation position, the bolts at both ends of the adsorption plate one 401 can be loosened, the adsorption plate one 401 and the connecting plate two 403 are taken out, the fire door is pushed close to the installation position, and then the auxiliary mechanism two can be moved away.

[0050] Embodiment 2 On the basis of Embodiment 1, the outer wall of the electromagnetic plate two 17 is flush with the rear end face of the door frame, ensuring that when the electromagnetic plate two 17 adsorbs the fire door, the fire door is flush with the installation part of the door frame.

[0051] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An auxiliary device for hoisting and installing an ultra-high and ultra-heavy fire door, characterized in that, It includes an auxiliary mechanism one for lifting and moving a fire door (100) and an auxiliary mechanism two for moving the fire door (100) arranged behind a doorframe (200); The auxiliary mechanism one includes an L-shaped bracket (1), a lifting and clamping unit (2) arranged at the top of the L-shaped bracket (1), and an electromagnetic adsorption unit one arranged on one side of the L-shaped bracket (1); A fixing component (4) is arranged on the fire door (100); The auxiliary mechanism two includes a U-shaped frame (5), a chute (6) arranged on one side of the U-shaped frame (5), a slider (7) movably arranged in the chute (6), an electromagnetic adsorption unit two arranged on the side wall of the slider (7), and a fixed bottom plate (8) arranged on the side of the U-shaped frame (5) away from the doorframe (200). A hydraulic telescopic rod (9) is arranged between the fixed bottom plate (8) and the side wall of the U-shaped frame (5); A universal wheel (101) with a brake is arranged at the bottom of the L-shaped bracket (1).

2. The hoisting and installation auxiliary device for the ultra-high and ultra-heavy fire door according to claim 1, wherein The L-shaped bracket (1) includes a horizontal plate (1001) and a vertical plate (1002) arranged at the top of one end of the horizontal plate (1001); A 7-shaped plate (11) is arranged at the top of the vertical plate (1002).

3. The hoisting and installation auxiliary device for the ultra-high and ultra-heavy fire door according to claim 2, characterized in that, The lifting and clamping unit (2) includes an electric telescopic plate (12) arranged on the lower surface of one end of the 7-shaped plate (11) and two clamping plates (14) arranged below the electric telescopic plate (12). The fixed end of the electric telescopic plate (12) is fixedly connected to the 7-shaped plate (11), and a connecting plate one (13) is arranged at the end of the telescopic end of the electric telescopic plate (12); Vertical plates (1301) are arranged at both ends of the lower surface of the connecting plate one (13). Electric telescopic rods one (1302) are arranged on both vertical plates (1301). The fixed ends of the electric telescopic rods one (1302) are fixedly connected to the side walls of the connecting plate one (13), and the telescopic ends of the electric telescopic rods one (1302) are fixedly connected to the clamping plates (14); The telescopic ends of the two electric telescopic rods one (1302) are arranged oppositely, and the two clamping plates (14) approach each other to clamp the fire door (100).

4. The hoisting and installation auxiliary device for the ultra-high and ultra-heavy fire door according to claim 3, characterized in that, The fixing component (4) includes an adsorption plate one (401), an adsorption plate two (402), and a connecting plate two (403); The adsorption plate one (401) is arranged as a rectangular plate with threaded holes opened at both ends; One end of the adsorption plate two (402) is fixedly provided with an L-shaped plate, and a threaded hole is opened on one side plate of the L-shaped plate at one end of the adsorption plate two (402); The connecting plate two (403) is arranged as an L-shaped plate, a threaded hole is opened on one side plate of the connecting plate two (403), and a plug board (4031) is arranged at the end of the other side plate; A slot (4021) matching the plug board (4031) is opened at one end of the adsorption plate two (402); The threaded holes at both ends of the adsorption plate one (401), the threaded hole on the L-shaped plate at one end of the adsorption plate two (402), and the threaded hole on the connecting plate two (403) are fixedly connected by bolts; The adsorption plate one (401), the adsorption plate two (402), the L-shaped plate at one end of the adsorption plate two (402), and the connecting plate two (403) are combined to form a closed rectangular frame, which hoop the fire door (100) from the outside.

5. The hoisting and installation auxiliary device for the ultra-high and ultra-heavy fire door according to claim 4, characterized in that, The first electromagnetic adsorption unit includes an electric telescopic rod two (15) arranged on the side wall of the vertical plate (1002) of the L-shaped bracket (1) and an electromagnetic plate one (16) arranged at the end of the electric telescopic rod two (15); The fixed end of the electric telescopic rod two (15) is fixedly connected to the side wall of the vertical plate (1002), and the end of the telescopic end of the electric telescopic rod two (15) is fixedly connected to the electromagnetic plate one (16); An electromagnetic suction connection is adopted between the electromagnetic plate one (16) and the adsorption plate one (401), which adsorbs when energized and automatically separates when powered off.

6. The hoisting and installation auxiliary device for the ultra-high and ultra-heavy fire door according to claim 5, characterized in that, The second electromagnetic adsorption unit includes an electromagnetic plate two (17) arranged on the side wall of the slider (7); An electromagnetic suction connection is adopted between the electromagnetic plate two (17) and the adsorption plate two (402), which adsorbs when energized and automatically separates when powered off.

7. The hoisting and installation auxiliary device for the ultra-high and ultra-heavy fire door according to claim 6, characterized in that, The groove of the U-shaped frame (5) is arranged facing the door frame (200), and the chute (6) is opened at the groove of the U-shaped frame (5); Both ends of the U-shaped frame (5) are provided with top plates (501) against the side walls of the door frame (200); A lead screw (18) is arranged in the chute (6), and both ends of the lead screw (18) are rotatably connected to the inner wall of the chute (6); The slider (7) is in threaded match with the lead screw (18).

8. The hoisting and installation auxiliary device for the ultra-high and ultra-heavy fire door according to claim 7, characterized in that, Both the side wall of the U-shaped frame (5) and the upper surface of the fixed bottom plate (8) are provided with connecting ear plates (19); The fixed end of the hydraulic telescopic rod (9) is connected to the connecting ear plate (19) on the upper surface of the fixed bottom plate (8), and a rotating shaft is arranged at the end of the telescopic end of the hydraulic telescopic rod (9), and the rotating shaft is hinged to the connecting ear plate (19) on the side wall of the U-shaped frame (5).

9. The hoisting and installation auxiliary device for the ultra-high and ultra-heavy fire door according to claim 8, characterized in that, The fixed bottom plate (8) is fixedly connected to the ground by bolts.

10. The hoisting and installation auxiliary device for the ultra-high and ultra-heavy fire door according to claim 1, characterized in that, A plurality of counterweight blocks (102) are arranged on the upper surface of the horizontal plate (1001) of the L-shaped bracket (1).

Images