Symmetrical hoisting and pulling device for steel structure at top of building

Abstract

The utility model discloses a symmetrical hoisting device for a steel structure at the top of a building, relates to the technical field of symmetrical hoisting, and aims to solve the technical problem that the use reliability of a motor is influenced due to long-time high-load symmetrical hoisting of H-shaped steel by the motor. The inner surface of the control box is movably connected with a supporting shaft, the upper surface of the supporting plate is connected with a lifting rope through a lifting ring, and the outer surface of the lifting rope is movably connected with two fixed pulleys; one end of an output shaft of the motor is fixedly connected with a driving gear, one side of the driving gear is meshed with a driven gear, the upper surface of the driven gear is fixedly connected with a rotating ring, the control box comprises a box body and a limiting plate, the inner wall of the limiting plate is symmetrically and fixedly connected with limiting blocks, and the outer surface of the fixed pulley is provided with a spiral groove matched with the inner wall of the rotating ring. The utility model has the advantages that the continuous high-load operation of the motor is avoided, and the long-time working reliability of the motor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of symmetrical hoisting, and more specifically to a symmetrical hoisting device for a steel structure on the top of a building. Background Art

[0002] Commonly used lifting methods generally include symmetrical lifting method, sliding lifting method, rotating lifting method, etc. Among them, the symmetrical lifting method is generally suitable for workshops and other occasions where it is difficult to use self-propelled cranes for lifting.

[0003] In the prior art, when symmetrically lifting H-shaped steel, a motor is generally used to pull the rope through the support of several fixed pulleys to lift the H-shaped steel from the other end of the rope. During the lifting process, the motor will be subjected to the entire load of the H-shaped steel at the other end of the rope for a long time, which will affect the reliability of the motor under continuous high-load operation. In view of this, we propose a symmetrical lifting device for the steel structure on the top of a building. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art, meet actual needs, and provide a symmetrical lifting device for the steel structure on the top of a building to solve the technical problem that the current motor symmetrically lifts H-shaped steel with high load for a long time, which affects the reliability of the motor.

[0005] To solve the above technical problems, the utility model provides the following technical solutions: a symmetrical lifting and pulling device for a steel structure on the top of a building, comprising a support plate, a motor is arranged above the support plate, a control box is arranged on one side of the motor, a support shaft is movably connected to the inner surface of the control box, a lifting rope is connected to the upper surface of the support plate through a lifting ring, and two fixed pulleys are movably connected to the outer surface of the lifting rope; a driving gear is fixedly connected to one end of the motor output shaft, a driven gear is meshedly connected to one side of the driving gear, a rotating ring is fixedly connected to the upper surface of the driven gear, the control box comprises a box body and a limit plate, the inner wall of the limit plate is symmetrically fixedly connected to a limit block, a spiral groove matching the inner wall of the rotating ring is opened on the outer surface of the fixed pulley, and a limit groove matching the limit block is arranged on one side of the spiral groove.

[0006] The utility model controls the driving gear through a motor to drive the driven gear and the rotating ring to rotate on the outer surface of the support shaft, so that the support plate moves up and down on the outer surface of the support shaft. When the H-shaped steel is hoisted, the gravity of the H-shaped steel itself and the connection between the support plate and the H-shaped steel through the lifting rope can avoid continuous high-load operation of the motor, thereby improving the reliability of the motor working for a long time.

[0007] Preferably, a support rod is provided under one of the fixed pulleys, the other end of the lifting rope is connected to a clamping block through another set of lifting rings, a clamping groove matching the H-shaped steel is provided inside the clamping block, a slider is fixedly connected to the rear surface of the clamping groove, and a sliding groove matching the slider is provided on the outer surface of the support rod.

[0008] Preferably, a hole with a diameter the same as the inner diameter of the rotating ring is opened inside the limit plate, and the limit block is connected to the inner hole wall of the limit plate; the support plate and the motor are prevented from rotating by the limit block being stuck inside the limit groove.

[0009] Preferably, a support groove matching the rotating ring is opened inside the control box, and the lower edge of the support groove is located between the driven gear and the rotating ring; the support groove provides support for the rotating ring when it rotates, and does not affect the rotation of the driven gear driven by the driving gear.

[0010] Preferably, the lower surface of the support plate is connected to a remote control switch via an elastic rope, so as to facilitate the control of the forward and reverse rotation of the motor when the height of the motor changes.

[0011] Preferably, the support shaft and support rod are respectively located directly below the two fixed pulleys, and the diameters of the support shaft and support rod are smaller than the inner diameter of the wire groove on the outer surface of the fixed pulley, so as to avoid the support shaft and support rod affecting the vertical downward connection between the lifting rope and the support plate and the block after passing through the two fixed pulleys.

[0012] Preferably, a protrusion is constructed at the bottom of the inner wall of the slot, and inclined structures for fitting the inner side of the H-beam are formed on both sides of the protrusion; the notch below the H-beam is clamped on the protrusion to maintain the stability of the H-beam during lifting.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model controls the driving gear through a motor to drive the driven gear and the rotating ring to rotate on the outer surface of the support shaft, so that the support plate moves up and down on the outer surface of the support shaft. When the H-shaped steel is hoisted, the continuous high-load operation of the motor is avoided by the gravity of the H-shaped steel itself and the connection between the support plate and the H-shaped steel through the lifting rope, thereby improving the reliability of the motor working for a long time.

[0015] 2. The utility model also achieves the effect of hoisting the H-shaped steel with an inclined surface on the inner side by clamping it on the protruding block at the bottom of the matching slot through the design of the clamping block and the clamping slot structure, further solving the problem of instability during the hoisting process of the H-shaped steel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2This is a schematic diagram of the rotating ring structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the card block structure of the utility model;

[0019] Figure 4 For the utility model Figure 1 -Schematic diagram of the structure at A.

[0020] Description of the numbers in the figure:

[0021] 1. Support plate; 2. Motor; 201. Remote control switch; 202. Driving gear; 203. Driven gear; 204. Rotating ring;

[0022] 3. Lifting rope; 4. Support shaft; 401. Spiral groove; 402. Limiting groove; 5. Fixed pulley; 6. Support rod; 601. Slide groove; 602. Sliding block; 603. Block; 604. Slot; 7. Control box; 701. Box body; 702. Limiting plate; 703. Limiting block. DETAILED DESCRIPTION

[0023] like Figures 1 to 4 As shown, the utility model relates to a symmetrical lifting device for a steel structure on the top of a building, comprising a support plate 1, a motor 2 is arranged above the support plate 1, a control box 7 is arranged on one side of the motor 2, a support shaft 4 is movably connected to the inner surface of the control box 7, a lifting rope 3 is connected to the upper surface of the support plate 1 through a lifting ring, and two fixed pulleys 5 are movably connected to the outer surface of the lifting rope 3; a driving gear 202 is fixedly connected to one end of the output shaft of the motor 2, a driven gear 203 is meshedly connected to one side of the driving gear 202, a rotating ring 204 is fixedly connected to the upper surface of the driven gear 203, the control box 7 comprises a box body 701 and a limit plate 702, the inner wall of the limit plate 702 is symmetrically fixedly connected to the limit block 703, a spiral groove 401 matching the inner wall of the rotating ring 204 is opened on the outer surface of the fixed pulley 5, and a limit groove 402 matching the limit block 703 is arranged on one side of the spiral groove 401.

[0024] In an embodiment of the utility model, a hole with a diameter the same as the inner diameter of the rotating ring 204 is opened inside the limit plate 702, and the limit block 703 is connected to the inner hole wall of the limit plate 702, a support groove matching the rotating ring 204 is opened inside the control box 7, and the lower edge of the support groove is located between the driven gear 203 and the rotating ring 204, and a protrusion is constructed at the bottom of the inner wall of the slot 604, and a slope structure for fitting the inner side of the H-shaped steel is formed on both sides of the protrusion.

[0025] In the embodiment of the utility model, the lower surface of the support plate 1 is connected to a remote control switch 201 through an elastic rope. It is worth noting that the remote control switch 201 is an existing conventional technology and is used to control the start and stop action of the motor 2, which will not be described in detail again.

[0026] As another embodiment of the utility model, a support rod 6 is arranged below one of the fixed pulleys 5, and the other end of the lifting rope 3 is connected to a clamping block 603 through another set of lifting rings. A clamping groove 604 matching the H-shaped steel is provided inside the clamping block 603, a slider 602 is fixedly connected to the rear surface of the clamping groove 604, and a sliding groove 601 matching the slider 602 is provided on the outer surface of the support rod 6.

[0027] Working principle: This embodiment provides a symmetrical lifting and pulling device for the steel structure on the top of a building. When in use, first, the remote control switch 201 is used to control the motor 2 to move the support plate 1 to the block 603 and drop it to the lowest point under its own gravity. Then, the H-shaped steel is passed through the slot 604 inside the block 603, and the H-shaped steel is stuck inside the slot 604. Then, the remote control switch 201 is used to start the motor 2 to drive the active gear 202 to rotate, and further drive the driven gear 203 and the rotating ring 204 to rotate on the outer surface of the support shaft 4. At this time, under the interaction between the spiral groove 401 and the inner surface of the rotating ring 204, the rotating ring 204 rotates and descends on the outer surface of the support shaft 4 and drives the support plate 1 to rise. At this time, under the action of the limit block 703, the rotation of the support plate 1 is limited and it is horizontally lowered, and the H-shaped steel inside the block 603 is further lifted. During the operation of the motor 2, the gravity of the H-shaped steel itself will cause the load on the motor 2 to change, thereby preventing the motor 2 from being in high-load working conditions for a long time and reducing its working reliability.

[0028] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A symmetrical lifting device for a steel structure on the top of a building, comprising a support plate (1), characterized in that: A motor (2) is arranged above the support plate (1), a control box (7) is arranged on one side of the motor (2), the inner surface of the control box (7) is movably connected to a support shaft (4), the upper surface of the support plate (1) is connected to a lifting rope (3) via a lifting ring, and the outer surface of the lifting rope (3) is movably connected to two fixed pulleys (5); One end of the output shaft of the motor (2) is fixedly connected to a driving gear (202), one side of the driving gear (202) is meshedly connected to a driven gear (203), the upper surface of the driven gear (203) is fixedly connected to a rotating ring (204), the control box (7) comprises a box body (701) and a limit plate (702), the inner wall of the limit plate (702) is symmetrically fixedly connected to a limit block (703), the outer surface of the fixed pulley (5) is provided with a spiral groove (401) matching the inner wall of the rotating ring (204), and one side of the spiral groove (401) is provided with a limit groove (402) matching the limit block (703).

2. The symmetrical lifting device for the steel structure on the top of a building according to claim 1 is characterized in that: A support rod (6) is arranged below one of the fixed pulleys (5); the other end of the lifting rope (3) is connected to a clamping block (603) via another set of lifting rings; a clamping groove (604) matching the H-shaped steel is provided inside the clamping block (603); a slider (602) is fixedly connected to the rear surface of the clamping groove (604); and a sliding groove (601) matching the slider (602) is provided on the outer surface of the support rod (6).

3. The symmetrical lifting device for the steel structure on the top of a building according to claim 1, characterized in that: The interior of the limiting plate (702) is provided with a hole having a diameter equal to the inner diameter of the rotating ring (204), and the limiting block (703) is connected to the inner hole wall of the limiting plate (702).

4. The symmetrical lifting device for the steel structure on the top of a building according to claim 1, characterized in that: A supporting groove matching the rotating ring (204) is provided inside the control box (7), and the lower edge of the supporting groove is located between the driven gear (203) and the rotating ring (204).

5. The symmetrical lifting device for the steel structure on the top of a building according to claim 1, characterized in that: The lower surface of the support plate (1) is connected to a remote control switch (201) via an elastic rope.

6. The symmetrical lifting device for the steel structure on the top of a building according to claim 2, characterized in that: The support shaft (4) and the support rod (6) are respectively located directly below the two fixed pulleys (5), and the diameters of the support shaft (4) and the support rod (6) are both smaller than the inner diameter of the wire groove on the outer surface of the fixed pulley (5).

7. The symmetrical lifting device for the steel structure on the top of a building according to claim 2, characterized in that: The bottom of the inner wall of the slot (604) is formed with a protrusion, and two sides of the protrusion are formed with inclined surface structures for fitting the inner side of the H-shaped steel.

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