Lifting device of lifting type scaffold

Abstract

The utility model discloses a lifting device of a lifting type scaffold, which comprises an electric hoist, an upper lifting hook of the electric hoist is used for being hooked and fixed with a lifting ring attached to a support, a lower lifting hook of the electric hoist is used for being fixed with the scaffold, and the lifting device further comprises a guide pulley used for being fixed at the top of a building; the lifting rope is wound on the guide pulley; the winder is used for being fixed on a building; one end of the lifting rope is connected with a chain outlet wheel of the electric hoist, and the other end of the lifting rope is connected with an unwinding shaft of the winder. The lifting rope is unwound through the winder, the lifting rope lifts one side of the chain outlet wheel of the electric hoist, and the chain is prevented from falling, so that the risk that the chain is twisted or even wound is reduced, it is guaranteed that the chain can smoothly move under the control of the rotating disc, the risk of clamping stagnation is reduced, and the use stability of the lifting device is improved.

Description

Technical Field

[0001] The utility model relates to the field of scaffolding, in particular to a lifting device of a lifting scaffolding. Background Art

[0002] A lifting scaffold, also known as an attached lifting scaffold, is an external scaffolding erected at a certain height and attached to a structure. It relies on its own lifting mechanism to ascend or descend floor by floor with the structure, and is equipped with anti-overturning and anti-fall devices. The lifting mechanism of a lifting scaffold in related art typically uses an electric hoist, with the upper hook of the hoist fixed to the scaffold and the lower hook hooked to the eye on the attachment support.

[0003] When the scaffold is lifted and controlled by the electric hoist, the electric hoist is started and the chain movement is controlled by the turntable inside the electric hoist so that the chain between the upper hook and the lower hook moves toward the side of the sprocket. That is, the length of the chain between the upper hook and the lower hook is reduced so that the upper hook and the lower hook are closer to each other, thereby realizing the lifting control of the scaffold.

[0004] When the scaffold is controlled to be lowered by the electric hoist, the electric hoist is started and the turntable inside the electric hoist is used to control the chain to move in the opposite direction, so that the chain at the sprocket moves between the upper hook and the lower hook, that is, the length of the chain between the upper hook and the lower hook is increased, so that the upper hook and the lower hook are moved away from each other, thereby realizing the descent control of the scaffold.

[0005] However, after the electric hoist was installed, the sprocket was found to be in a downward position due to the lack of a lifting device on the sprocket side. When the chain was moved toward the sprocket side by the turntable inside the electric hoist, it was prone to twisting or even tangling. When the chain was moved between the upper and lower hooks by the turntable inside the electric hoist, there was a risk of jamming, which affected the stability of the lifting device. This required improvement. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a lifting device for a lifting scaffold, which can lift the sprocket side of the electric hoist, reduce the risk of chain twisting or even entanglement, ensure that the chain can move smoothly under the control of the turntable, reduce the risk of jamming, and thus improve the stability of the lifting device.

[0007] The above technical objectives of the present invention are achieved through the following technical solutions: a lifting device for a lifting scaffold, comprising an electric hoist, wherein the upper hook of the electric hoist is used to be hooked and fixed to the lifting ring on the attachment support, and the lower hook of the electric hoist is used to be fixed to the scaffold, and the lifting device further comprises:

[0008] A guide pulley for fixing to the top of a building;

[0009] A pulling rope is wound around the guide pulley;

[0010] a cable reel for fixing to a building;

[0011] Among them, one end of the pulling rope is connected to the sprocket of the electric hoist, and the other end is connected to the unwinding shaft of the reel. The reel is used to unwind the pulling rope to achieve pulling on one side of the sprocket of the electric hoist.

[0012] In a preferred example, the present invention can be further configured as follows: the pulling rope includes a wire rope and a reduction spring, one end of the reduction spring is fixedly connected to the sprocket of the electric hoist, and the other end is fixedly connected to the wire rope, the wire rope is wound around the guide pulley, and the end of the wire rope away from the reduction spring is fixedly connected to the unwinding shaft of the reel.

[0013] In a preferred embodiment, the present invention can be further configured as follows: the lifting device further includes:

[0014] A support frame, detachably connected to the scaffold;

[0015] A support ring is arranged on the support frame, and the lower hook of the electric hoist can be hooked and fixed to the support ring.

[0016] In a preferred example, the present invention can be further configured as follows: a support plate is vertically provided on the support frame, the support ring is located directly above the support plate, and the support ring is connected to the support plate via a tension sensor.

[0017] In a preferred example, the present invention can be further configured as follows: a pair of limit plates are vertically fixedly connected to the support frame, the support plate is located between the pair of limit plates, and the support plate and the pair of limit plates are connected by limit steel pins.

[0018] In a preferred example, the present invention can be further configured as follows: a pair of mounting plates are vertically fixedly connected to the top of the tension sensor, the top of the support ring is located between the pair of mounting plates, and the support ring and the pair of mounting plates are connected by fixed steel pins.

[0019] In summary, the present invention has at least the following beneficial effects:

[0020] The lifting rope is unwound through the reel and pulled to the side of the sprocket of the electric hoist to prevent the chain from falling, thereby reducing the risk of chain twisting or even entanglement, ensuring that the chain can move smoothly under the control of the turntable, reducing the risk of jamming, and thus improving the stability of the lifting device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of an embodiment;

[0022] Figure 2 yes Figure 1 A magnified schematic diagram of area A in the middle.

[0023] Figure numerals: 1. Electric hoist; 2. Guide pulley; 3. Pulling rope; 31. Wire rope; 32. Reducing spring; 4. Reel; 5. Support frame; 6. Support ring; 7. Support plate; 8. Tension sensor; 9. Limit plate; 10. Limit steel pin; 11. Mounting plate; 12. Fixing steel pin. DETAILED DESCRIPTION

[0024] The present invention will be described in further detail below with reference to the accompanying drawings.

[0025] Reference Figure 1 A lifting device for a lifting scaffold comprises an electric hoist 1, an upper hook of the electric hoist 1 being used for hooking and fixing with a lifting ring on an attachment support, and a lower hook of the electric hoist 1 being used for fixing with the scaffold.

[0026] Reference Figure 1 The lifting device also includes a guide pulley 2, a pulling rope 3, and a wire reel 4. The guide pulley 2 is fixed to the top of the building, that is, the guide pulley 2 is located above the electric hoist 1. The wire reel 4 is fixed to the building, and the pulling rope 3 is wound around the guide pulley 2. At the same time, one end of the pulling rope 3 is connected to the sprocket of the electric hoist 1, and the other end is connected to the unwinding shaft of the wire reel 4.

[0027] When the electric hoist 1 controls the scaffolding to perform lifting and lowering movements, the reel 4 is used to synchronously unwind the lifting rope 3 according to the lifting and lowering speed of the scaffolding, so that the lifting rope 3 can pull the side of the sprocket of the electric hoist 1 to prevent the chain from falling, thereby reducing the risk of chain twisting or even entanglement, ensuring that the chain can move smoothly under the control of the turntable, reducing the risk of jamming, and thus improving the stability of the lifting device.

[0028] Reference Figure 1The lifting rope 3 includes a wire rope 31 and a reduction spring 32. One end of the reduction spring 32 is fixedly connected to the sprocket of the electric hoist 1, and the other end is fixedly connected to the wire rope 31. The wire rope 31 is wound on the guide pulley 2, and the end of the wire rope 31 away from the reduction spring 32 is fixedly connected to the unwinding shaft of the reel 4.

[0029] By setting the reduction spring 32, a certain buffering effect is achieved. When the reel 4 is started, the reduction spring 32 undergoes elastic stretching deformation to prevent the wire rope 31 from suddenly pulling the chain, reducing the risk of damage to the chain and turntable, and also reducing the risk of jamming.

[0030] Reference Figure 1 、 Figure 2 The lifting device further includes a support frame 5 and a support ring 6. The support frame 5 is fixed to the scaffolding by a plurality of fastening bolts. The support ring 6 is provided on the support frame 5, and the lower hook of the electric hoist 1 can be hooked and fixed to the support ring 6. Since the support frame 5 can be detachably connected to the scaffolding, the support frame 5 can be replaced separately and can be reused.

[0031] Reference Figure 1 、 Figure 2 A support plate 7 is vertically mounted on the support frame 5, and a support ring 6 is located directly above the support plate 7. The support ring 6 and the support plate 7 are connected via a tension sensor 8. After the tension sensor 8 is connected to an external display device, the staff can know the magnitude of the tension, so that the staff can judge whether the scaffold can be raised or lowered smoothly.

[0032] Reference Figure 1 、 Figure 2 A pair of limit plates 9 are vertically fixed to the support frame 5. The support plate 7 is located between the limit plates 9 and connected to the limit plates 9 via limit steel pins 10. Furthermore, a pair of mounting plates 11 are vertically fixed to the top of the tension sensor 8. The top of the support ring 6 is located between the mounting plates 11 and connected to the mounting plates 11 via fixed steel pins 12. This design allows each component to be repaired and replaced individually, reducing maintenance costs and improving serviceability.

[0033] The specific embodiments are merely explanations of the present invention and are not limitations of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the embodiments as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A lifting device for a lifting scaffold, comprising an electric hoist (1), wherein the upper hook of the electric hoist (1) is used to be hooked and fixed to a lifting ring on an attachment support, and the lower hook of the electric hoist (1) is used to be fixed to the scaffold, characterized in that: The lifting device also includes: A guide pulley (2) for fixing on the top of a building; A pulling rope (3) is wound around the guide pulley (2); a cable reel (4) for fixing to a building; One end of the pulling rope (3) is connected to the sprocket of the electric hoist (1), and the other end is connected to the unwinding shaft of the reel (4). The reel (4) is used to unwind the pulling rope (3) to achieve pulling on one side of the sprocket of the electric hoist (1).

2. The lifting device of a lifting scaffold according to claim 1, characterized in that: The pulling rope (3) includes a steel wire rope (31) and a reduction spring (32), one end of the reduction spring (32) is fixedly connected to the sprocket of the electric hoist (1), and the other end is fixedly connected to the steel wire rope (31), the steel wire rope (31) is wound around the guide pulley (2), and the end of the steel wire rope (31) away from the reduction spring (32) is fixedly connected to the unwinding shaft of the reel (4).

3. The lifting device of a lifting scaffold according to claim 1, characterized in that: The lifting device also includes: A support frame (5) is detachably connected to the scaffold; A support ring (6) is arranged on the support frame (5), and the lower hook of the electric hoist (1) can be hooked and fixed to the support ring (6).

4. The lifting device of a lifting scaffold according to claim 3, characterized in that: A support plate (7) is vertically arranged on the support frame (5), the support ring (6) is located directly above the support plate (7), and the support ring (6) and the support plate (7) are connected via a tension sensor (8).

5. The lifting device of a lifting scaffold according to claim 4, characterized in that: A pair of limit plates (9) are vertically fixedly connected to the support frame (5), the support plate (7) is located between the pair of limit plates (9), and the support plate (7) and the pair of limit plates (9) are connected via limit steel pins (10).

6. The lifting device of a lifting scaffold according to claim 4, characterized in that: A pair of mounting plates (11) are vertically fixedly connected to the top of the tension sensor (8), the top of the support ring (6) is located between the pair of mounting plates (11), and the support ring (6) and the pair of mounting plates (11) are connected via a fixed steel pin (12).

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