CN114803830A - Anti-falling and quickly-connected steel plate lifting device for building construction - Google Patents

Abstract

The invention discloses an anti-drop and quick-connectable steel plate hoisting device for building construction, comprising a bearing frame, a mounting frame is fixedly connected inside the bearing frame; And the side surface of the lifting column is fixedly connected with a lifting rack; the bottom surface of the lifting column is fixedly connected with a limit bottom plate, and the upper end of the limit bottom plate is provided with a first return spring, and the first return spring is connected to on the side of the lifting column. The invention can facilitate the fast and convenient stable clamping of the steel plate, thereby effectively improving the efficiency of hoisting the steel plate, and can facilitate the clamping of the surface of the steel plate by the plate surface clamping mechanism, thereby further improving the hoisting safety of the steel plate hoisting device It is easy to adjust the length of the telescopic rod through the limit locking mechanism, and it is convenient to hoist steel plates of different sizes, thereby improving the applicability of the steel plate hoisting device.

Description

A drop-proof and quick-connectable steel plate lifting device for building construction

technical field

The invention relates to the technical field of steel plate hoisting, in particular to a steel plate hoisting device for building construction which is anti-drop and can be quickly connected.

Background technique

In the process of building construction, the use of steel plates is very common, and in the construction of some tall buildings, the steel plates need to be transported to a higher position, and a steel plate hoisting device needs to be used to hoist the steel plates to use the steel plates, but now Some steel plate lifting devices still have the following shortcomings:

1. The existing steel plate hoisting devices usually use hoisting hooks for hoisting. It is necessary to hang the hoisting hooks on the side of the steel plate one by one, and adjust the positions of the hoisting hooks one by one to ensure the stability of the steel plate hoisting. This hoisting connection method operates It is time-consuming and labor-intensive, and it is easy to tilt the steel plate during the hoisting process;

2. The existing steel plate hoisting device hangs the hoisting hook on the side of the steel plate, and then pulls the hoisting hook by the crane to hoist the steel plate to the required height, and the hoisting hook is prone to slip during the hoisting process, which makes the steel plate occur. Falling, the safety of its hoisting is poor;

3. The existing steel plate hoisting device is not convenient for fast and stable clamping and hoisting of steel plates of different sizes, which makes the applicability of the existing steel plate hoisting poor;

Therefore, a drop-proof and quick-connectable steel plate lifting device for building construction is required to solve the above problems.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an anti-drop and quick-connectable steel plate lifting device for building construction, in order to solve the problem that the existing steel plate lifting device proposed in the above-mentioned background technology has complicated operation for steel plate connection and fixing, poor hoisting safety and suitable for Sexual issues.

To achieve the above object, the present invention provides the following technical solutions:

An anti-drop and quick-connectable steel plate hoisting device for building construction includes a load-bearing frame, and a mounting frame is fixedly connected to the inside of the load-bearing frame:

A lift column is slidably connected up and down in the middle of the mounting frame, and a lift rack is fixedly connected to the side of the lift column;

The bottom surface of the lifting column is fixedly connected to the limiting bottom plate, and the upper end of the limiting bottom plate is provided with a first return spring, and the first return spring is connected to the side surface of the lifting column;

The mounting frame is connected with a clamping arm through a bearing, and the upper end of the clamping arm is coaxially fixedly connected with a clamping gear, and the clamping gear and the lifting rack are meshed and connected;

A telescopic chute is arranged inside the clamping arm, and a telescopic rod is slidably connected in the telescopic chute;

The upper end of the telescopic rod is fixedly connected with a limit locking mechanism, and the lower end of the telescopic rod is fixedly connected with a plate surface clamping mechanism.

By adopting the above technical solution, the steel plate can be easily and stably clamped, thereby effectively improving the efficiency of the steel plate hoisting, and the surface of the steel plate can be easily clamped by the plate surface clamping mechanism, thereby further improving the steel plate hoisting device. The hoisting safety is improved, and the length of the telescopic rod can be easily adjusted through the limit locking mechanism, which is convenient for hoisting steel plates of different sizes, thereby improving the applicability of the steel plate hoisting device.

Preferably, the limit locking mechanism includes a limit housing:

the limit housing is fixedly connected to the upper position of the telescopic rod, and the limit housing is slidably connected in the telescopic chute;

A rotating sleeve is connected to the inner middle position of the limiting housing through a bearing, and a reversing gear is keyed on the side surface of the rotating sleeve;

The two sides of the lower end of the limit housing are slidably connected to a limit rack, and the limit rack is meshed with the reversing gear, and one end of the limit rack extends to the limit shell external;

A torsion spring is connected to the lower end of the rotating sleeve, and one end of the torsion spring is connected to the inner bottom surface of the limiting housing;

The inner wall of the rotating sleeve is provided with a driving groove, and a control rod is telescopically and slidably connected to the side of the limiting housing;

A driving rod is fixedly connected to the lower end of the control rod, and both ends of the driving rod are slidably connected in the driving groove;

The upper end of the control rod is fixedly connected with a button, and limit slots are provided on both sides of the inner wall of the telescopic chute, and one end of the limit rack is snapped and connected in the limit slot.

By adopting the above technical solution, it is easy to drive the control rod to move by pressing the button, and the control rod drives the reversing gear to rotate under the action of the rotating sleeve, so that the reversing gear drives the limit rack to disengage from the limit slot, and realizes the adjustment of the telescopic rod. The telescopic adjustment is carried out to facilitate the hoisting of steel plates of different sizes, and the applicability of the hoisting device is improved.

Preferably, the board surface clamping mechanism includes a clamping housing:

The clamping shell is fixedly connected to the lower end of the telescopic rod, and a clamping chute is arranged in the middle of the side surface of the clamping shell;

The upper end of the clamping chute is slidably connected with an upper clamping block, and the lower end of the clamping chute is slidably connected with a lower clamping block;

A transmission shaft is connected to the inside of the clamping housing through a bearing, and a first drive gear is keyed on the side surface of the transmission shaft;

One side of the first driving gear is meshed with an upper rack, and one end of the upper rack is fixedly connected with the upper clamping block;

A second driving gear is keyed on the side surface of the transmission shaft, and a lower rack is meshed with a side surface of the second driving gear, and one end of the lower rack is fixedly connected with the lower clamping block;

A second return spring is connected between the lower end surface of the lower rack and the inner bottom surface of the clamping housing.

By adopting the above technical solution, it is easy to drive the lower clamping block to slide down by the gravity of the steel plate, so that the lower clamping block drives the lower rack to slide, and the lower rack drives the first driving gear and the second driving gear to rotate, so that the upper clamping block moves downward. The surface of the steel plate is clamped, thereby further improving the safety of the steel plate hoisting.

Preferably, a lifting ring is fixedly connected to the upper end surface of the lifting column.

By adopting the above technical solution, the lifting ring that can be fixedly connected through the upper end face of the lifting column is convenient to connect the hoisting head of the crane.

Preferably, the structural shape of the lifting column is set to a prismatic shape, and a corresponding polygonal groove is set in the middle of the mounting frame.

By adopting the above technical solution, it is convenient to set the structure shape of the lifting column into a prismatic shape so that it does not rotate when sliding up and down, so that the lifting rack connected to the side thereof can stably engage and drive with the clamping gear.

Preferably, the structural shape of the telescopic rod is set to a "T" shape, and the structural shape of the telescopic chute matches the structural shape of the telescopic rod.

By adopting the above technical solution, it is convenient to set the structural shape of the telescopic rod into a "T" shape to make the sliding connection between the telescopic rod and the clamping arm more stable, thereby ensuring the stability of hoisting the steel plate.

Preferably, the driving slot is inclined relative to the central axis of the rotating sleeve.

By adopting the above technical solution, it is convenient to drive the rotating sleeve to rotate when the driving rod slides in the driving groove, so that the rotating sleeve drives the reversing gear to rotate.

Preferably, a convex block is fixedly connected to the side surface of the control rod, and a corresponding convex groove is provided inside the limiting housing.

By adopting the above technical solution, it is convenient to connect the convex block through the side surface of the control rod, so that the control rod does not rotate when sliding, so that the rotating sleeve can be driven to rotate by the driving rod connected at the lower end thereof.

Preferably, the number of teeth of the first driving gear is greater than the number of teeth of the second driving gear.

By adopting the above technical solution, it is convenient to make the downward sliding speed of the upper clamping block greater than the downward sliding speed of the lower clamping block by the fact that the number of teeth of the first driving gear is greater than the number of teeth of the second driving gear, so that the upper clamping block and the lower clamping block can interact with each other. Close to the surface of the steel plate to clamp.

Preferably, the upper rack and the lower rack are arranged on the same side of the interior of the clamping housing.

With the above technical solution, the upper rack and the lower rack can be slid upward or downward at the same time by arranging the upper rack and the lower rack at the same position inside the clamping housing.

Compared with the prior art, the beneficial effect of the present invention is that the anti-drop and quick-connectable steel plate hoisting device for building construction can easily and quickly hold the steel plate stably, thereby effectively improving the efficiency of the steel plate hoisting. , and it is convenient to clamp the surface of the steel plate by the plate surface clamping mechanism, thereby further improving the hoisting safety of the steel plate hoisting device, and it is convenient to adjust the length of the telescopic rod through the limit locking mechanism, which is convenient for different sizes. The steel plate is hoisted, thereby improving the applicability of the steel plate lifting device:

1. The lifting column is pulled up by the crane, so that the lifting column drives the lifting rack on its side to move upward, and the upward movement of the lifting rack drives the clamping gear to rotate, so that the clamping gear drives the clamping arm to rotate, and the clamping arm drives the telescopic rod to move , so that the clamping arms around the mounting frame move closer to each other, and the plate surface clamping mechanism at the lower end of the clamping arm supports and clamps the bottom surface of the steel plate, so as to realize the fast and stable clamping of the steel plate, so as to facilitate the rapid and convenient clamping of the steel plate. Stable clamping can effectively improve the efficiency of steel plate hoisting;

2. When the steel plate is hoisted, the lower surface of the steel plate presses the lower clamp block under the action of the gravity of the steel plate, so that the lower clamp block drives the lower rack to slide down, and the lower rack slides through the second drive gear to drive the transmission. The shaft rotates, so that the transmission shaft drives the upper rack to move downward through the rotation of the first driving gear, so that the upper clamping block slides downward. Since the number of teeth of the first driving gear and the second driving gear are different, the upper clamping block slides downward. The speed is greater than the downward sliding speed of the lower clamping block, and the upper clamping block and the lower clamping block are close to each other to clamp the surface of the steel plate, so that the surface of the steel plate can be easily clamped by the plate surface clamping mechanism, which further improves the lifting device of the steel plate. hoisting safety;

3. By pressing the button, it drives the control rod to slide into the limit housing, and the movement of the control rod drives the driving rod connected at one end to slide in the driving groove, so that the rotating sleeve rotates, and the rotation of the rotating sleeve drives its side connection. The reversing gear rotates, so that the reversing gear drives the limit rack connected on both sides to shrink and slide to the inside of the limit housing, so that one end of the limit rack is separated from the limit slot in the telescopic chute. The rod can adjust the position of the plate surface clamping mechanism, so that the length of the telescopic rod can be easily adjusted by the limit locking mechanism, and it is convenient to hoist steel plates of different sizes, thereby improving the applicability of the steel plate lifting device.

Description of drawings

Fig. 1 is the front view three-dimensional structure schematic diagram of the present invention;

Fig. 2 is the top view three-dimensional structure schematic diagram of the present invention;

3 is a schematic view of the three-dimensional structure of the present invention;

4 is a schematic diagram of the connection structure of the lifting column of the present invention;

5 is a schematic diagram of the connection structure of the clamping arm of the present invention;

6 is a schematic diagram of the cross-sectional structure of the clamping arm of the present invention;

Fig. 7 is the enlarged structural schematic diagram of point A in Fig. 6 of the present invention;

FIG. 8 is a schematic cross-sectional structural diagram of the limit locking mechanism of the present invention;

FIG. 9 is a schematic three-dimensional structure diagram of the board surface clamping mechanism of the present invention;

FIG. 10 is a schematic diagram of the internal structure of the board surface clamping mechanism of the present invention.

In the figure: 1. Bearing frame; 2. Mounting frame; 3. Lifting column; 4. Lifting ring; 5. Lifting rack; 6. Limiting base plate; 7. First return spring; 8. Clamping arm; 9. Clamp Holding gear; 10, telescopic chute; 11, telescopic rod; 12, limit locking mechanism; 1201, limit housing; 1202, rotating sleeve; 1203, reversing gear; 1204, limit rack; 1205, torsion spring; 1206, drive slot; 1207, control lever; 1208, drive lever; 1209, button; 1210, limit slot; 13, plate clamping mechanism; 1301, clamping shell; 1302, clamping chute; 1303, upper clamping block; 1304, lower clamping block; 1305, transmission shaft; 1306, first drive gear; 1307, upper rack; 1308, second drive gear; 1309, lower rack; 1310, second return spring.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Please refer to Figures 1-10, the present invention provides a technical solution:

An anti-drop and quick-connectable steel plate hoisting device for building construction includes a bearing frame 1, and a mounting frame 2 is fixedly connected to the inside of the bearing frame 1; The side surface of 3 is fixedly connected with a lifting rack 5; the upper end surface of the lifting column 3 is fixedly connected with a lifting ring 4; The bottom surface of 3 is fixedly connected to the limiting bottom plate 6, and the upper end of the limiting bottom plate 6 is provided with a first return spring 7, and the first return spring 7 is connected to the side of the lifting column 3; The upper end of the clamping arm 8 is fixedly connected with a clamping gear 9, and the clamping gear 9 is meshed with the lifting rack 5; A telescopic rod 11 is slidably connected in the chute 10; the structural shape of the telescopic rod 11 is set to a "T" shape, and the structural shape of the telescopic chute 10 matches that of the telescopic rod 11; when the steel plate needs to be hoisted, The hoisting device is connected to the crane through the lifting ring 4, the hoisting device is adjusted to be just above the steel plate, and the lifting column 3 is pulled upward by the crane, so that the lifting column 3 drives the lifting rack 5 on its side to move upward, and the lifting rack 5 The upward movement drives the clamping gear 9 to rotate, so that the clamping gear 9 drives the clamping arm 8 to rotate, the clamping arm 8 drives the telescopic rod 11 to move, and the telescopic rod 11 drives the plate surface clamping mechanism 13 to move, so that the clamps around the mounting frame 2 are moved. The holding arms 8 move closer to each other, and the plate surface clamping mechanism 13 at the lower end of the clamping arms 8 supports and clamps the bottom surface of the steel plate, so that the steel plate can be clamped quickly and stably; when the steel plate needs to be unloaded, the The crane loosens the lifting column 3, and the lifting column 3 moves downward under the action of the first return spring 7, so that the clamping arm 8 unfolds and moves, thereby facilitating the unloading of the steel plate.

The upper end of the telescopic rod 11 is fixedly connected to a limit locking mechanism 12 , and the limit locking mechanism 12 includes a limit casing 1201 : the limit casing 1201 is fixedly connected to the upper side of the telescopic rod 11 , and the limit casing 1201 slides Connected to the telescopic chute 10; a rotating sleeve 1202 is connected to the middle position of the limit housing 1201 through a bearing, and a reversing gear 1203 is keyed on the side of the rotating sleeve 1202; both sides of the lower end of the limit housing 1201 The position is slidingly connected to the limit rack 1204, and the limit rack 1204 is meshed with the reversing gear 1203, and one end of the limit rack 1204 protrudes to the outside of the limit housing 1201; the lower end of the rotating sleeve 1202 A torsion spring 1205 is connected, and one end of the torsion spring 1205 is connected with the inner bottom surface of the limiting housing 1201; the inner wall of the rotating sleeve 1202 is provided with a driving slot 1206, and the side of the limiting housing 1201 is telescopically and slidably connected with a control rod 1207; the lower end of the control rod 1207 is fixedly connected with a driving rod 1208, and both ends of the driving rod 1208 are slidably connected in the driving groove 1206; A limiting slot 1210, and one end of the limiting rack 1204 is snap-connected in the limiting slot 1210; the driving slot 1206 is inclined relative to the central axis of the rotating sleeve 1202; the side surface of the control rod 1207 is fixedly connected with a bump, and The inside of the limit housing 1201 is provided with corresponding convex grooves; when it is necessary to hoist steel plates of different sizes, by pressing the button 1209, the button 1209 drives the control rod 1207 to slide to the inside of the limit housing 1201, and the control rod 1207 The movement drives the drive rod 1208 connected at one end to slide in the drive slot 1206, causing the rotating sleeve 1202 to rotate, and the rotating sleeve 1202 rotates to drive the reversing gear 1203 connected to its side to rotate, so that the reversing gear 1203 drives the connection between its two sides. The limit rack 1204 retracts and slides into the limit housing 1201, so that one end of the limit rack 1204 is separated from the limit slot 1210 in the telescopic chute 10, and the plate surface clamping mechanism is realized by sliding the telescopic rod 11. 13. Adjustment of the position; after the adjustment is completed, release the button 1209, and under the elastic force of the torsion spring 1205, the reversing gear 1203 is reset and rotated, so that the control rod 1207 automatically resets and moves.

The lower end of the telescopic rod 11 is fixedly connected with a board surface clamping mechanism 13; the board surface clamping mechanism 13 includes a clamping shell 1301: the clamping shell 1301 is fixedly connected to the lower end position of the telescopic rod 11, and the clamping shell 1301 is A clamping chute 1302 is arranged in the middle of the side surface; the upper end of the clamping chute 1302 is slidably connected with an upper clamping block 1303, and the lower end of the clamping chute 1302 is slidably connected with a lower clamping block 1304; the interior of the clamping shell 1301 passes through A transmission shaft 1305 is connected to the bearing, and a first drive gear 1306 is keyed on the side of the transmission shaft 1305; one side of the first drive gear 1306 is meshed with an upper rack 1307, and one end of the upper rack 1307 is connected to the upper clamping block 1303 is fixedly connected; a second drive gear 1308 is keyed on the side of the transmission shaft 1305, and a lower rack 1309 is meshed and connected to the side of the second drive gear 1308, and one end of the lower rack 1309 is fixedly connected to the lower clamping block 1304; A second return spring 1310 is connected between the lower end surface of the lower rack 1309 and the inner bottom surface of the clamping housing 1301; the number of teeth of the first driving gear 1306 is greater than the number of teeth of the second driving gear 1308; the upper rack 1307 and the lower rack 1309 is set at the same position inside the clamping shell 1301; when the steel plate is hoisted, its lower surface presses down the lower clamping block 1304 under the action of gravity of the steel plate, so that the lower clamping block 1304 drives the lower rack 1309 Sliding downward, the lower rack 1309 slides through the second driving gear 1308 to drive the transmission shaft 1305 to rotate, so that the transmission shaft 1305 drives the first driving gear 1306 to rotate, and the rotation of the first driving gear 1306 drives the upper rack 1307 to move downward, so that the upper The clamping block 1303 slides downward. Since the number of teeth of the first driving gear 1306 and the second driving gear 1308 are different, the downward sliding speed of the upper clamping block 1303 is greater than the downward sliding speed of the lower clamping block 1304. The clamping blocks 1304 are close to each other to clamp the surface of the steel plate, thereby further improving the stability of fixing the steel plate and improving the safety of lifting the steel plate; when the steel plate needs to be unloaded, when the clamping arm 8 is unfolded, the lower The rack 1309 moves upward under the action of the second reset spring 1310, so that the upper clamping block 1303 and the lower clamping block 1304 are far away from each other to release the steel plate, and realize the unloading operation of the steel plate, which is not described in detail in this specification. It belongs to the prior art known to those skilled in the art.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, and substitutions can be made in these embodiments without departing from the principle and spirit of the invention and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (10)

1. The utility model provides an anti falling and steel sheet hoisting accessory for construction that can high-speed joint, includes bearing frame (1), the inside fixedly connected with mounting bracket (2) of bearing frame (1), its characterized in that:

the middle part of the mounting rack (2) is vertically connected with a lifting column (3) in a sliding manner, and the side surface of the lifting column (3) is fixedly connected with a lifting rack (5);

the bottom surface of the lifting column (3) is fixedly connected with a limiting bottom plate (6), the upper end of the limiting bottom plate (6) is provided with a first return spring (7), and the first return spring (7) is connected to the side surface of the lifting column (3);

a clamping arm (8) is connected in the mounting rack (2) through a bearing, a clamping gear (9) is coaxially and fixedly connected to the upper end of the clamping arm (8), and the clamping gear (9) is meshed with the lifting rack (5);

a telescopic chute (10) is arranged inside the clamping arm (8), and a telescopic rod (11) is connected in the telescopic chute (10) in a sliding manner;

the upper end of the telescopic rod (11) is fixedly connected with a limiting locking mechanism (12), and the lower end of the telescopic rod (11) is fixedly connected with a plate clamping mechanism (13).

2. A drop-resistant and quick-connect steel plate lifting device for building construction according to claim 1, wherein the limit-locking mechanism (12) comprises a limit housing (1201):

the limiting shell (1201) is fixedly connected to the upper side of the telescopic rod (11), and the limiting shell (1201) is connected in the telescopic chute (10) in a sliding mode;

the middle position in the limiting shell (1201) is connected with a rotating sleeve (1202) through a bearing, and a reversing gear (1203) is in keyed connection with the side face of the rotating sleeve (1202);

two sides of the lower end of the limiting shell (1201) are connected with limiting racks (1204) in a sliding mode, the limiting racks (1204) are meshed with the reversing gear (1203) in a connecting mode, and one ends of the limiting racks (1204) extend out of the limiting shell (1201);

the lower end of the rotating sleeve (1202) is connected with a torsion spring (1205), and one end of the torsion spring (1205) is connected with the inner bottom surface of the limiting shell (1201);

a driving groove (1206) is formed in the inner wall of the rotating sleeve (1202), and a control rod (1207) is connected to the side face of the limiting shell (1201) in a telescopic sliding mode;

the lower end of the control rod (1207) is fixedly connected with a driving rod (1208), and two ends of the driving rod (1208) are slidably connected into a driving groove (1206);

the upper end fixedly connected with button (1209) of control lever (1207), just be provided with spacing groove (1210) on the inner wall both sides face of flexible spout (10), and the one end block of spacing rack (1204) is connected in spacing groove (1210).

3. A drop-proof and quick-connect steel plate lifting device for building construction as claimed in claim 1, wherein the plate surface clamping mechanism (13) comprises a clamping housing (1301):

the clamping shell (1301) is fixedly connected to the lower end of the telescopic rod (11), and a clamping sliding groove (1302) is formed in the middle of the side face of the clamping shell (1301);

the upper end of the clamping sliding groove (1302) is connected with an upper clamping block (1303) in a sliding manner, and the lower end of the clamping sliding groove (1302) is connected with a lower clamping block (1304) in a sliding manner;

a transmission shaft (1305) is connected to the inside of the clamping shell (1301) through a bearing, and a first driving gear (1306) is connected to the side face of the transmission shaft (1305) in a key mode;

one side of the first driving gear (1306) is connected with an upper rack (1307) in a meshing manner, and one end of the upper rack (1307) is fixedly connected with the upper clamping block (1303);

a second driving gear (1308) is in keyed connection with the side face of the transmission shaft (1305), a lower rack (1309) is in meshed connection with the side face of the second driving gear (1308), and one end of the lower rack (1309) is fixedly connected with the lower clamping block (1304);

and a second return spring (1310) is connected between the lower end surface of the lower rack (1309) and the inner bottom surface of the clamping shell (1301).

4. The steel plate hoisting device for building construction of claim 1, which is drop-proof and can be connected quickly, is characterized in that: the upper end face of the lifting column (3) is fixedly connected with a lifting ring (4).

5. The steel plate hoisting device for building construction of claim 1, which is drop-proof and can be connected quickly, is characterized in that: the lifting column (3) is prismatic, and the middle part of the mounting rack (2) is provided with a corresponding polygonal groove.

6. The steel plate hoisting device for building construction of claim 1, which is drop-proof and can be connected quickly, is characterized in that: the structure shape of the telescopic rod (11) is set to be T-shaped, and the structure shape of the telescopic chute (10) is matched with the structure shape of the telescopic rod (11).

7. The steel plate hoisting device for building construction, which is drop-proof and can be quickly connected, according to claim 2, characterized in that: the drive slot (1206) is disposed obliquely with respect to a central axis of the rotating sleeve (1202).

8. The steel plate hoisting device for building construction of claim 7, which is drop-proof and can be connected quickly, is characterized in that: the side surface of the control rod (1207) is fixedly connected with a convex block, and a corresponding convex groove is formed in the limiting shell (1201).

9. The steel plate hoisting device for building construction of claim 3, which is drop-proof and can be connected quickly, is characterized in that: the number of teeth of the first drive gear (1306) is greater than the number of teeth of the second drive gear (1308).

10. The steel plate hoisting device for building construction of claim 9, which is drop-proof and can be connected quickly, is characterized in that: the upper rack (1307) and the lower rack (1309) are arranged at the same side position in the clamping shell (1301).

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