Composite door frame lifting appliance and using method thereof

Abstract

The invention discloses a composite door frame lifting appliance and a using method thereof, and relates to the technical field of lifting, the composite door frame lifting appliance comprises a main frame, a mounting lifting lug is arranged on the side of the main frame, a lifting lifting lug is arranged at the top of the main frame, a plug pin mechanism is arranged in the main frame, and a control module is connected to the plug pin mechanism; the control module is used for controlling the bolt mechanism to operate and enabling the bolt mechanism to be inserted into an inherent pin shaft hole of the door frame, and a horizontal adjusting mechanism is arranged in the main frame and used for adjusting the position of the main frame in the door frame. Hoisting operation is conducted through inherent pin shaft holes of the door frame, the door frame is hoisted through the main frame and the plug pin mechanism, hoisting deformation of the door frame is reduced, the levelness of the door frame is adjusted through the horizontal adjusting mechanism, meanwhile, the hoisted door frame does not need to be temporarily fixed through a supporting piece, and therefore the hoisting efficiency of the door frame is greatly improved.

Description

TECHNICAL FIELD

[0001] The application relates to a hoisting technology field, in particular to a composite door frame hoist and a use method thereof. BACKGROUND

[0002] Important facilities such as nuclear power plant workshops often use double-layer doors (i.e. two door bodies) as a partition and protection. In order to reduce the construction difficulty and improve the overall safety, the two door bodies usually adopt a set of composite door frame.

[0003] At present, for the hoisting and installation of the composite door frame which can accommodate two door bodies, since the door frame itself does not have a lifting point, the door frame is hoisted to the pouring position by a lifting belt in the past. The uneven pressure generated by the lifting belt around the door frame will form stress concentration in the local part of the door frame, which will cause the door frame to be easily twisted and deformed during hoisting, affecting the structural strength. At the same time, after the door frame is hoisted into place, a large amount of time and manpower is consumed to temporarily fix and repeatedly adjust the door frame using a large number of supporting members to ensure the installation accuracy. SUMMARY

[0004] In order to improve the hoisting efficiency of the door frame and reduce the deformation of the door frame during hoisting, the application provides a composite door frame hoist and a use method thereof.

[0005] In the first aspect, the application provides a composite door frame hoist adopting the following technical scheme:

[0006] A composite door frame hoist comprises a main frame, a mounting lifting lug is arranged on the side of the main frame, a lifting lifting lug is arranged on the top of the main frame, a latch mechanism is arranged in the main frame, a control module is connected to the latch mechanism, the control module is used to control the operation of the latch mechanism and make the latch mechanism inserted into the inherent pin shaft hole of the door frame, a horizontal adjustment mechanism is arranged in the main frame, and the horizontal adjustment mechanism is used to adjust the position of the main frame in the door frame.

[0007] By adopting the above technical scheme, the inherent pin shaft hole of the door frame is used for hoisting operation, the lifting equipment is connected with the mounting lifting lug first, and the main frame is installed on the door frame, then the lifting equipment is connected with the lifting lifting lug, the door frame is turned to the vertical state by the main frame, the door frame is moved to the pre-installation position by the main frame, the position of the main frame is adjusted by the horizontal adjustment mechanism, the horizontal and vertical requirements of the door frame are met, and finally the hoist is detached from the door frame after pouring concrete on the door frame. In this way, the door frame is hoisted by using the hoist, the deformation of the door frame during hoisting is reduced, the horizontal degree of the door frame is adjusted by using the horizontal adjustment mechanism, and the hoisted door frame does not need to be temporarily fixed by using supporting members, so that the hoisting efficiency of the door frame is greatly improved.

[0008] Preferably, the main frame comprises two long frames and a plurality of short frames, the two long frames are arranged in parallel, two ends of the short frame are fixedly connected with the two long frames, the plurality of short frames are arranged in the length direction of the long frame, the long frame and the short frame are provided with a rib plate, the mounting lifting lug is arranged on the outer side wall of the long frame, and the lifting lug is arranged on the top wall of the short frame.

[0009] By adopting the above technical scheme, the two long frames and the plurality of short frames form a quadrilateral main frame, which is convenient to put into the door frame, and the rib plates in the long frame and the short frame strengthen the structural strength of the main frame, so that the main frame is not easy to deform.

[0010] Preferably, the latch mechanism is provided with two, the two latch mechanisms are arranged on the outer sides of the two long frames respectively, the latch mechanism comprises a cylinder, two push rods, a first sliding seat and a positioning pin, the cylinder is fixedly arranged in the middle of the long frame, the control module is connected with the two cylinders, the two push rods are arranged at two ends of the cylinder, the two positioning pins are fixedly arranged on the two push rods, the two first sliding seats are fixedly arranged at two ends of the long frame, the two positioning pins slide through the two first sliding seats, and the end of the positioning pin is inserted into the pin shaft hole fixed in the door frame.

[0011] By adopting the above technical scheme, the control module controls the operation of the two cylinders, the cylinder drives the positioning pin to slide in the first sliding seat through the push rod, the end of the positioning pin slides out of the first sliding seat and is inserted into the door frame, and the four positioning pins are simultaneously inserted into the four pin shaft holes of the door frame, so that the lifting device can lift the door frame.

[0012] Preferably, a limiting ring is fixedly sleeved on the positioning pin, and the limiting ring moves to abut against the side wall of the first sliding seat close to the cylinder.

[0013] By adopting the above technical scheme, when the cylinder moves the positioning pin through the push rod, the positioning pin drives the limiting ring to move synchronously, and when the limiting ring moves to abut against the first sliding seat, the limiting ring limits the movement of the positioning pin, so that the lengths of the four positioning pins extending out of the first sliding seat are the same, thereby improving the stability of the lifting device.

[0014] Preferably, the top of each long frame is fixedly provided with a fixed position connector, the cylinder is provided with a pipeline, the end of the pipeline is connected with the fixed position connector, and the control module is connected with the two fixed position connectors.

[0015] By adopting the above technical scheme, the control module is connected with the two cylinders through the two fixed position connectors and the pipeline, so as to control the synchronous operation of the two cylinders.

[0016] Preferably, the horizontal adjustment mechanism is provided with four, the four horizontal adjustment mechanisms are respectively arranged on the two ends of the two short frames at the two ends of the long frame, the horizontal adjustment mechanism comprises a second sliding seat, a push block, a rotating wheel and a transmission connection part, the second sliding seat is fixedly arranged at the end of the short frame, the rotating wheel is rotatably arranged on the short frame, the bottom end of the rotating wheel is located in the second sliding seat, the push block is slidably arranged in the second sliding seat, one end of the push block extends out of the second sliding seat, the push block moves to abut against the door frame, the transmission connection part is arranged in the second sliding seat, and the transmission connection part drives the rotating wheel and the push block, and the long frame is provided with a level.

[0017] By adopting the above technical scheme, when the bolt mechanism is inserted into the inherent pin shaft hole of the door frame, the rotating wheel is rotated, the rotating wheel drives the push block to slide in the second sliding seat through the transmission connection part, four push blocks move to abut against the door frame, the lifting appliance can be positioned, the lifting appliance will not move when the door frame is lifted, when the levelness of the door frame is adjusted, the levelness of the door frame is observed through the level, the rotating wheel drives the main frame to slightly move in the door frame through the push block by rotating the rotating wheel, the adjustment of the lifting center is realized, and the levelness of the door frame is adjusted.

[0018] Preferably, the main frame is symmetrically provided with two adjustment mechanisms along the length direction of the long frame, the adjustment mechanism comprises a sliding table, a sliding block, a driving rack, a driving gear, a connecting shaft, a rotating disc, a lifting block and an elastic piece, two ends of the sliding table are fixedly connected with the two long frames, a sliding groove is formed in the sliding table, the sliding block is slidably arranged in the sliding groove, the connecting shaft is slidably arranged in the sliding block, the rotating disc is fixedly arranged at the top end of the connecting shaft, the driving gear is fixedly arranged at the bottom end of the connecting shaft, the driving rack is fixedly arranged in the sliding groove of the sliding table, the driving gear is engaged with the driving rack, a lifting groove is formed in the sliding block, the lifting block is rotatably arranged on the connecting shaft and slidably arranged in the lifting groove, the elastic piece is sleeved on the connecting shaft, the bottom end of the elastic piece abuts against the lifting block, and the top end of the elastic piece abuts against the inner wall of the sliding block.

[0019] By adopting the above technical scheme, the sliding block is slid on the sliding table, the levelness of the door frame can be accurately adjusted, when the sliding block needs to be slid for large-range adjustment, the rotating disc is pulled upwards, the driving gear is driven to rise by the connecting shaft, so that the driving gear is separated from the driving rack, at this time, the sliding block can be freely moved on the sliding table, when the sliding block needs to be accurately adjusted in a small range, the rotating disc is released, the connecting shaft is driven to descend by the lifting block through the elastic piece, the driving gear is driven to descend by the connecting shaft and the driving gear is engaged with the driving rack, at this time, the rotating disc is rotated, the driving gear is driven to rotate on the driving rack by the connecting shaft, so that the sliding table can be accurately and small-range moved and adjusted.

[0020] In the second aspect, the use method of the composite door frame lifting appliance adopts the technical scheme as follows:

[0021] A method for using a composite door frame lifting appliance, which adopts the composite door frame lifting appliance, and comprises the following steps: S1: horizontally lying before door frame installation, lifting the lifting appliance through the installation lifting lug; S2: hand-held control module, the latch mechanism is in the retracted state, the lifting appliance is lifted to the top of the door frame; S3: adjusting the latch mechanism of the lifting appliance and the pin shaft hole of the door frame, using the control module to control the operation of the latch mechanism and make the latch mechanism insert into the pin shaft hole of the door frame; S4: using the horizontal adjustment mechanism to resist the door frame; S5: connecting the lifting lug with the lifting hook, slowly turning the door frame from the horizontal state to the vertical state; S6: after lifting the door frame to the pre-installation position, adjusting the levelness and verticality of the door frame using the horizontal adjustment mechanism; S7: pouring concrete, after pouring is completed, releasing the horizontal adjustment mechanism and the latch mechanism, lifting the lifting appliance away from the door frame.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. The inherent pin shaft hole of the door frame is used for lifting operation, the lifting device is connected with the installation lifting lug, and the main frame is installed on the door frame, then the lifting device is connected with the lifting lug, the door frame is turned to the vertical state through the main frame, and the door frame is moved to the pre-installation position through the main frame, the position of the main frame is adjusted by the horizontal adjustment mechanism, so that the door frame meets the levelness and verticality requirements, and finally the concrete is poured on the door frame and the lifting appliance is detached from the door frame. In this way, the door frame is lifted by the lifting appliance, the deformation of the door frame during lifting is reduced, the levelness of the door frame is adjusted by the horizontal adjustment mechanism, and the lifted door frame does not need to be temporarily fixed by a support, thereby greatly improving the lifting efficiency of the door frame.

[0024] 2. When the positioning ring moves and abuts against the first sliding seat, the movement of the positioning pin is limited by the positioning ring, so that the lengths of the four positioning pins extending out of the first sliding seat are the same, thereby improving the stability of the lifting appliance;

[0025] 3. By adjusting the mechanism, the sliding block on the sliding table is adjusted, so that the levelness of the door frame is accurately adjusted. When the sliding block needs to be adjusted in a large range, the dial is pulled up, the dial drives the driving gear to rise through the connecting shaft, so that the driving gear is separated from the driving rack. At this time, the sliding block can be moved freely on the sliding table. When the sliding block needs to be accurately adjusted in a small range, the dial is released, the elastic member drives the connecting shaft to descend through the lifting block, the connecting shaft drives the driving gear to descend and makes the driving gear mesh with the driving rack. At this time, the dial is rotated, the dial drives the driving gear to rotate on the driving rack through the connecting shaft, so that the sliding table can be accurately adjusted in a small range. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 Figure 1 is a schematic diagram of the overall structure of a composite door frame hoist according to an embodiment of the present application;

[0027] Figure 2 Figure 2 is a top view of the overall structure of the composite door frame hoist according to an embodiment of the present application;

[0028] Figure 3 Figure 3 is a schematic diagram of the overall structure of a composite door frame hoist according to another embodiment of the present application;

[0029] Figure 4 Figure 4 is a partial structure sectional view of the composite door frame hoist according to another embodiment of the present application;

[0030] Figure 5 Figure 5 is a flow chart of a method for using the composite door frame hoist according to another embodiment of the present application;

[0031] Figure 6 Figure 6 is a schematic diagram of the hoist installation state of the method for using the composite door frame hoist according to another embodiment of the present application;

[0032] Figure 7 Figure 7 is a schematic diagram of the hoist lifting state of the method for using the composite door frame hoist according to another embodiment of the present application.

[0033] The reference signs are as follows: 1, main frame; 11, long frame; 12, short frame; 2, mounting lug; 3, lifting lug; 4, latch mechanism; 41, air cylinder; 42, push rod; 43, first sliding seat; 44, positioning pin; 5, control module; 6, horizontal adjustment mechanism; 61, second sliding seat; 62, push block; 63, rotating wheel; 7, adjustment mechanism; 71, sliding table; 72, sliding block; 73, driving rack; 74, driving gear; 75, connecting shaft; 76, rotating disc; 77, lifting block; 78, elastic member; 8, rib plate; 9, limiting ring; 13, fixed position connector; 14, pipeline; 15, level meter; 16, door frame; 17, sliding groove; 18, lifting groove. DETAILED DESCRIPTION

[0034] The following will be described in detail with reference to the accompanying drawings. Figures 1-7 The present application will be described in further detail.

[0035] Embodiment 1

[0036] The embodiments of the present application disclose a composite door frame 16 hoist.

[0037] Reference will be made to Figure 1 and Figure 2The composite door frame 16 lifting appliance comprises a main frame 1, the main frame 1 is composed of two long frames 11 and three short frames 12, the two long frames 11 are parallel to each other, the three short frames 12 are parallel to each other, the two ends of the short frame 12 are fixedly connected with the two long frames 11 respectively, the three short frames 12 are arranged at equal intervals along the length direction of the long frame 11, and the long frame 11 and the short frame 12 are fixedly installed with a rib plate 8.

[0038] Two mounting lifting lugs 2 are fixedly installed on the outer side of one long frame 11, and lifting lugs 3 are fixedly installed in the middle of the top wall of the three short frames 12.

[0039] A latch mechanism 4 is installed on the outer side of each long frame 11, the latch mechanism 4 comprises a gas cylinder 41, two push rods 42, a first sliding seat 43 and a positioning pin 44, the gas cylinder 41 is fixedly installed in the middle of the long frame 11, and the two first sliding seats 43 are fixedly installed at the two ends of the long frame 11.

[0040] The two positioning pins 44 are slidingly installed in the two first sliding seats 43, a limiting ring 9 is fixedly sleeved on the outer side wall of each positioning pin 44, and the limiting ring 9 is located on the side of the first sliding seat 43 close to the gas cylinder 41.

[0041] A fixed position connector 13 is fixedly installed on the top of each long frame 11, a pipeline 14 is connected to each gas cylinder 41, the two pipelines 14 are connected with the two fixed position connectors 13 away from the gas cylinder 41, and a control module 5 is connected to the two fixed position connectors 13.

[0042] The control module 5 controls the operation of the two gas cylinders 41 through the two pipelines 14, the gas cylinder 41 drives the positioning pin 44 to move through the push rod 42, so that the end of the positioning pin 44 can protrude out of the first sliding seat 43, the limiting ring 9 limits the protruding length of the positioning pin 44, so that the protruding lengths of the four positioning pins 44 are the same.

[0043] The rotating wheel 63 is rotatably installed on the short frame 12, the bottom end of the rotating wheel 63 is installed in the second sliding seat 61, and the transmission connecting part is installed in the second sliding seat 61 and is in transmission connection with the push block 62 of the rotating wheel 63. In the application, the transmission connecting part can be selected as a gear and rack structure, the gear is installed at the bottom of the rotating wheel 63, the rack is installed at the end of the push block 62, and the gear is in meshing connection with the rack.

[0044] The implementation principle of the composite door frame 16 lifting appliance in the embodiment of the application is as follows: the lifting appliance is used to first connect and install the lifting lug 2, and then install the main frame 1 on the door frame 16. The control module 5 controls the operation of the two cylinders 41, the cylinders 41 drive the positioning pins 44 to slide in the first sliding seats 43 through the push rods 42, the four positioning pins 44 are simultaneously inserted into the four pin shaft holes of the door frame 16, the four rotating wheels 63 are rotated, the rotating wheels 63 drive the push blocks 62 to move through the transmission connecting parts, and the four push blocks 62 abut against the door frame 16, so that the lifting appliance is installed on the door frame 16.

[0045] The lifting appliance is further connected with the lifting lug 3, the door frame 16 is flipped to the vertical state through the main frame 1, the door frame 16 is lifted and moved to the pre-installation position through the main frame 1, the rotating wheel 63 is rotated, the rotating wheel 63 drives the push block 62 to move, and then drives the main frame 1 to adjust the position on the door frame 16, so that the door frame 16 reaches the levelness and perpendicularity requirements of installation. Finally, the door frame 16 is poured with concrete, and the lifting appliance is detached from the door frame 16.

[0046] The door frame 16 is lifted by using the main frame 1 and the pin mechanism 4, the lifting deformation of the door frame 16 is reduced, the levelness of the door frame 16 is adjusted by using the horizontal adjustment mechanism 6, and the lifted door frame 16 does not need to be temporarily fixed by using a support, so that the lifting efficiency of the door frame 16 is greatly improved.

[0047] Embodiment 2

[0048] With reference to Figure 3 and Figure 4 , the difference between the embodiment and the embodiment 1 is that the main frame 1 is provided with two adjusting mechanisms 7, and the two adjusting mechanisms 7 are located on the side close to each other of the two short frames 12 at the two ends of the long frame 11. The adjusting mechanism 7 comprises a sliding table 71, a sliding block 72, a driving rack 73, a driving gear 74, a connecting shaft 75, a rotating disc 76, a lifting block 77 and an elastic member 78. The sliding table 71 is parallel to the short frame 12, and the two ends of the sliding table 71 are fixedly connected with the two long frames 11.

[0049] The sliding groove 17 with a convex cross section is formed in the sliding table 71, and the top of the sliding groove 17 is provided with an opening. The sliding block 72 is slidingly installed at the opening end of the sliding groove 17, the lifting groove 18 is formed in the sliding block 72, and the lifting block 77 is slidingly arranged in the lifting groove 18. The connecting shaft 75 is rotatably installed in the lifting block 77, and the elastic member 78 is sleeved on the connecting shaft 75. In the present application, the elastic member 78 can be a spring. The top end of the elastic member 78 abuts against the top wall of the lifting groove 18 of the sliding block 72, and the bottom end of the elastic member 78 abuts against the top wall of the lifting block 77.

[0050] The connecting shaft 75 is slidingly installed in the sliding block 72, and the two ends of the connecting shaft 75 extend out of the sliding block 72. The rotating disc 76 is fixedly installed at the top end of the connecting shaft 75, the drive gear 74 is fixedly installed at the bottom end of the connecting shaft 75, and the drive rack 73 is fixedly installed in the sliding groove 17 of the sliding block 72. The drive gear 74 is engaged with the drive rack 73.

[0051] The implementation principle of the embodiment 2 of the present application is that when the levelness and perpendicularity of the door frame 16 are adjusted, the sliding block 72 of the sliding table 71 is adjusted in a very flexible manner, so that the levelness and perpendicularity of the door frame 16 can be accurately adjusted. When the sliding block 72 needs to be slid in a large range, the rotating disc 76 is pulled upward, the rotating disc 76 drives the drive gear 74 to rise by means of the connecting shaft 75, so that the drive gear 74 is separated from the drive rack 73, the connecting shaft 75 drives the lifting block 77 to move upward and press the elastic member 78, and at this time, the sliding block 72 can freely move on the sliding table 71. When the position of the sliding block 72 needs to be accurately adjusted in a small range, the rotating disc 76 is released, the elastic member 78 drives the connecting shaft 75 to descend by means of the lifting block 77, the connecting shaft 75 drives the drive gear 74 to descend and engage with the drive rack 73, and at this time, the rotating disc 76 is rotated, the rotating disc 76 drives the drive gear 74 to rotate on the rack through the connecting shaft 75, and then the sliding block 72 is accurately and slightly moved and adjusted.

[0052] Embodiment 3

[0053] The embodiment of the present application discloses a use method of the composite door frame 16 lifting appliance.

[0054] Referring to Figure 5 , Figure 6 and Figure 7 , the use method of the composite door frame 16 lifting appliance adopts the above-mentioned composite door frame 16 lifting appliance, and comprises the following steps.

[0055] S1: Before the door frame 16 is installed, the door frame 16 is placed in a horizontal lying mode, and the lifting appliance is lifted by installing the lifting lug 2;

[0056] S2: The control module 5 is held by hand, the positioning pin 44 is placed in a retracted state, and the lifting appliance is lifted to the top lifting position of the door frame 16;

[0057] S3: Adjust the latch mechanism 4 of the lifting device to align with the pin hole of the door frame 16, and use the control module 5 to control the operation of the latch mechanism 4 and make the positioning pin 44 inserted into the pin hole of the door frame 16;

[0058] S4: Rotate the rotating wheel 63, and the rotating wheel 63 drives the push block 62 to abut against the door frame 16;

[0059] S5: Connect the lifting lug 3 to the hook, and slowly overturn the door frame 16 from the horizontal state to the vertical state;

[0060] S6: After the door frame 16 is lifted and transferred to the pre-installation position, rotate the rotating wheel 63 to adjust the levelness and verticality of the door frame 16;

[0061] S7: Pour the concrete, and after the pouring is completed, loosen the horizontal adjustment mechanism 6 and the latch mechanism 4, and lift the lifting device away from the door frame 16.

[0062] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, so: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A composite door frame (16) hanger, characterized in that: The invention comprises a main frame (1), a mounting lug (2) is provided on the side of the main frame (1), a lifting lug (3) is provided on the top of the main frame (1), a latch mechanism (4) is provided in the main frame (1), a control module (5) is connected to the latch mechanism (4), the control module (5) is used to control the operation of the latch mechanism (4) and to insert the latch mechanism (4) into the inherent pin shaft hole of the door frame (16), a horizontal adjustment mechanism (6) is provided in the main frame (1), and the horizontal adjustment mechanism (6) is used to adjust the position of the main frame (1) in the door frame (16).

2. A composite door frame (16) hanger according to claim 1, characterized in that: The main frame (1) comprises two long frames (11) and a plurality of short frames (12), the two long frames (11) are arranged in parallel, the two ends of the short frames (12) are fixedly connected to the two long frames (11), the plurality of short frames (12) are arranged at intervals along the length direction of the long frames (11), and rib plates (8) are provided in both the long frames (11) and the short frames (12), the mounting lugs (2) are provided on the outer side walls of the long frames (11), and the lifting lugs (3) are provided on the top walls of the short frames (12).

3. A composite door frame (16) hanger according to claim 2, characterized in that: The latch mechanism (4) is provided with two, and the two latch mechanisms (4) are respectively provided on the outside of the two long frames (11). The latch mechanism (4) comprises a cylinder (41), two push rods (42), a first slide seat (43) and a positioning pin (44). The cylinder (41) is fixedly provided in the middle of the long frame (11). The control module (5) is connected to the two cylinders (41). The two push rods (42) are provided at both ends of the cylinder (41). The two positioning pins (44) are fixedly provided on the two push rods (42). The two first slide seats (43) are fixedly provided at both ends of the long frame (11). The two positioning pins (44) slide through the two first slide seats (43), and the ends of the positioning pins (44) are inserted into the pin shaft holes fixed to the door frame (16).

4. A composite door frame (16) hanger according to claim 3, characterized in that: A limiting ring (9) is fixedly sleeved on the positioning pin (44), and the limiting ring (9) moves to abut against the side wall of the first sliding seat (43) close to the cylinder (41).

5. A composite door frame (16) hanger according to claim 3, characterized in that: A fixed position joint (13) is fixedly provided on the top of each long frame (11), a pipeline (14) is provided on the cylinder (41), the end of the pipeline (14) is connected to the fixed position joint (13), and the control module (5) is connected to the two fixed position joints (13).

6. A composite door frame (16) hanger according to claim 2, characterized in that: The horizontal adjustment mechanism (6) is provided with four, and the four horizontal adjustment mechanisms (6) are respectively provided on the two ends of the two short frames (12) at the two ends of the long frame (11). The horizontal adjustment mechanism (6) comprises a second slide (61), a push block (62), a rotating wheel (63) and a transmission connection part. The second slide (61) is fixedly provided at the end of the short frame (12), the rotating wheel (63) is rotatably provided on the short frame (12), the bottom end of the rotating wheel (63) is located in the second slide (61), the pushing block (62) is slidably provided in the second slide (61), one end of the pushing block (62) extends out of the second slide (61), and the pushing block (62) moves to abut against the door frame (16). The transmission connection part is provided in the second slide (61), and the transmission connection part is transmission-connected to the rotating wheel (63) and the pushing block (62). A level meter (15) is provided on the long frame (11).

7. A composite door frame (16) hanger according to claim 2, characterized in that: Two adjusting mechanisms (7) are symmetrically arranged in the main frame (1) along the length direction of the long frame (11). The adjusting mechanism (7) includes a slide (71), a slider (72), a driving rack (73), a driving gear (74), a connecting shaft (75), a turntable (76), a lifting block (77) and an elastic member (78). The two ends of the slide (71) are fixedly connected to the two long frames (11). A slide groove (17) is provided in the slide (71). The slider (72) is slidably arranged in the slide groove (17). The connecting shaft (75) is slidably arranged in the slide (72). The turntable (76) is fixedly connected to the two long frames (11). The drive gear (74) is fixedly arranged at the top end of the connecting shaft (75), the drive rack (73) is fixedly arranged in the slide groove (17) of the slide (71), the drive gear (74) is meshed with the drive rack (73), a lifting groove (18) is provided in the slider (72), the lifting block (77) is rotatably arranged on the connecting shaft (75) and slidably arranged in the lifting groove (18), the elastic member (78) is sleeved on the connecting shaft (75), the bottom end of the elastic member (78) abuts the lifting block (77), and the top end abuts the inner wall of the slider (72).

8. A method for using a composite door frame (16) hanger, characterized in that: The composite door frame (16) hanger according to any one of claims 1 to 7 is used, comprising the following steps: S1: The door frame (16) is placed horizontally before installation and the lifting device is lifted by installing the lifting lugs (2); S2: Use the handheld control module (5) to place the latch mechanism (4) in a retracted state and hoist the sling to the top lifting position of the door frame (16); S3: Adjust the latch mechanism (4) of the sling to align with the pin shaft hole of the door frame (16), use the control module (5) to control the operation of the latch mechanism (4) and insert the latch mechanism (4) into the pin shaft hole of the door frame (16); S4: Use the horizontal adjustment mechanism (6) to press against the door frame (16); S5: Connect the lifting lug (3) to the hook and slowly flip the door frame (16) from a horizontal state to a vertical state; S6: After the door frame (16) is hoisted and transferred to the pre-installation position, the horizontal adjustment mechanism (6) is used to adjust the horizontality and verticality of the door frame (16); S7: pouring concrete. After pouring is completed, the horizontal adjustment mechanism (6) and the latch mechanism (4) are released, and the sling is lifted away from the door frame (16).

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