Safety protection lifting appliance for building safety engineering

Abstract

The utility model relates to the technical field of building construction lifting appliances, and particularly discloses a safety protection lifting appliance for building safety engineering, which comprises a shell, a motor arranged on the shell, a roller arranged in the shell and driven by the motor, a cable wound on the roller and a lifting hook arranged on the cable, the fixed disc and the shell are mutually fixed, the rotary disc and the roller coaxially rotate, a plurality of clamping hooks are arranged on the rotary disc, a plurality of clamping grooves allowing the clamping hooks to be clamped therein are formed in the fixed disc, and when the rotating speed of the roller exceeds a set threshold value, the clamping hooks are clamped into the clamping grooves, and the clamping hooks are clamped into the clamping grooves. According to the electric hoist, the safety protection performance of the electric hoist can be effectively improved, safety accidents are avoided, the personnel safety in the construction process and the use period of a building is effectively ensured, and economic losses caused by the accidents are reduced.

Description

Technical Field

[0001] This application relates to the field of construction hoisting equipment technology, and specifically discloses a safety protection hoisting equipment for construction safety engineering. Background Technology

[0002] In construction, safety engineering is the core of construction project management. Its primary task is to ensure the safety of personnel during construction and the use of the building, and its secondary task is to reduce economic losses caused by accidents.

[0003] In construction safety engineering, safety protection for high-altitude operations is an essential part, including fall prevention measures for working near edges, and safety protection for climbing and suspended operations. As one of the essential pieces of equipment in construction, the safety performance of lifting equipment is particularly important.

[0004] An electric hoist is a lifting device installed on overhead cranes and gantry cranes. Electric hoists are characterized by their small size, light weight, simple operation, and ease of use. Currently, the safety protection of electric hoists mainly relies on limit switches and safety clutches. However, with the improvement of safety protection in the industry, the safety protection of electric hoists also needs to be further improved. Therefore, in view of this, the inventor provides a safety protection lifting device for construction safety engineering to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a safety protection lifting device to improve the safety protection capability of construction safety projects.

[0006] To achieve the above objectives, the basic solution of this utility model provides a safety protection lifting device for building safety engineering, including a housing, a motor mounted on the housing, a roller mounted inside the housing and driven by the motor, a cable wound on the roller, and a hook mounted on the cable. It also includes a fixed plate fixed to the housing and a rotating plate that rotates coaxially with the roller. The rotating plate is provided with a plurality of hooks, and the fixed plate is provided with a plurality of slots into which the hooks can be engaged. When the rotational speed of the roller exceeds a set threshold, the hooks engage in the slots.

[0007] The principle and effect of this basic scheme are as follows:

[0008] Compared with the prior art, this utility model sets up a rotating disk that rotates synchronously with the drum. When the drum speed exceeds a set threshold, the hooks on the rotating disk are subjected to increased centrifugal force, causing the hooks to engage with the slots and lock together. This locks the fixed disk and the rotating disk together, and in turn locks the drum, thus preventing safety accidents. This utility model can effectively improve the safety protection performance of electric hoists, ensure the safety of personnel during construction and building use, and reduce economic losses caused by accidents.

[0009] Furthermore, the end of the hook is hinged to the rotating disk, and both the hook and the sidewall of the rotating disk are provided with magnets that can magnetically attract each other. By setting the magnets, when the rotational speed of the roller is less than a threshold, the hook is stably connected to the rotating disk due to the mutual attraction of the magnets.

[0010] Furthermore, the side wall of the rotating disk is provided with several hinges, and the end of the hook is provided with a hinge shaft connected to each hinge. A torsion spring is sleeved on the hinge shaft. By setting the torsion spring, when the rotational speed of the roller exceeds a set threshold, the spring force of the torsion spring will pop the hook out, thereby making the hook more accurately lock with the slot.

[0011] Furthermore, the sidewall of the fixed plate is uniformly provided with several electromagnetic protection components. Each electromagnetic protection component includes a fixed cylinder disposed on the sidewall of the fixed plate, a magnetic push rod slidably connected to the fixed cylinder, an electromagnet disposed within the fixed cylinder and attracting the magnetic push rod, and a return spring disposed within the fixed cylinder and driving the magnetic push rod to reset. The sidewall of the drum is provided with a locking block that abuts against the magnetic push rod. This arrangement ensures that after an emergency power outage of the electric hoist, the magnetic force of the electromagnet on the magnetic push rod disappears, the return spring pushes the electromagnetic push rod out, causing the electromagnetic push rod to engage with the locking block, thereby further improving the safety performance of the electric hoist.

[0012] Furthermore, the end of the locking block is provided with a concave arc-shaped groove. The arc-shaped groove facilitates the engagement between the electromagnetic push rod and the locking block, thereby preventing the electromagnetic push rod from disengaging from the locking block.

[0013] Furthermore, the magnetic push rod includes a magnetic plate slidably connected to the inner wall of the fixed cylinder and a guide rod connected to the magnetic plate and extending out of the fixed cylinder. This arrangement prevents the electromagnetic push rod from detaching from the fixed cylinder.

[0014] Furthermore, the reset spring is disposed between the magnetic plate and the inner wall of the fixed cylinder. This facilitates the extension of the reset spring push rod and the electromagnetic push rod. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A schematic diagram of a safety protection hoist for building safety engineering according to an embodiment of this application is shown;

[0017] Figure 2 This invention provides a schematic diagram illustrating the cooperation between a rotating disc and a fixed disc of a safety protection hoist for building safety engineering, as proposed in an embodiment of this application.

[0018] Figure 3 This illustration shows a schematic diagram of the cooperation between a fixed cylinder and an electromagnetic push rod for a safety protection hoist used in building safety engineering, as proposed in an embodiment of this application. Detailed Implementation

[0019] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0020] The reference numerals in the accompanying drawings of the instruction manual include: housing 1, motor 2, connecting box 3, cable 4, hook 5, roller 6, roller shaft 7, rotating disk 8, snap hook 9, mating block 10, electric fixing cylinder 11, electromagnetic plate 12, guide rod 13, electromagnet 14, and return spring 15.

[0021] A safety protection lifting device for construction safety engineering, implementing, for example Figure 1 As shown: It includes a housing 1, a motor 2 mounted on the housing 1, a roller 6 mounted inside the housing 1 and driven by the motor 2, a cable 4 wound on the roller 6 and a hook 5 mounted on the cable 4, and a connecting box 3 at the end of the housing 1.

[0022] like Figure 2 As shown, the connecting box 3 is provided with a fixed plate that is fixed to the housing 1 and a rotating plate 8 that is fixedly connected to the roller shaft 7 of the roller 6 and rotates coaxially. The rotating plate 8 is provided with a mounting groove at its periphery. The end face of the mounting groove is provided with three hinge ears. The hinge ears are respectively connected to hooks 9 through hinge shafts. The back of the hooks 9 and the mounting groove are respectively provided with magnets that can magnetically attract each other. Correspondingly, the inner wall of the fixed plate is provided with several mating blocks 10. Adjacent mating blocks 10 form a groove that allows the end of the hooks 9 to be inserted.

[0023] like Figure 2 and Figure 3 As shown, the side wall of the fixed disk is also uniformly provided with several electromagnetic protection components. The electromagnetic protection components include a fixed cylinder provided on the side wall of the fixed disk, a magnetic push rod slidably connected to the fixed cylinder, an electromagnet 14 provided in the fixed cylinder and attracting the magnetic push rod, and a reset spring 15 provided in the fixed cylinder and driving the magnetic push rod to reset. The magnetic push rod includes a magnetic plate slidably connected to the inner wall of the fixed cylinder and a guide rod 13 connected to the magnetic plate and extending out of the fixed cylinder. The electromagnet 14 and the reset spring 15 are provided between the magnetic plate and the inner wall of the fixed cylinder. The side wall of the roller 6 is provided with a locking block that abuts against the magnetic push rod. The side of the locking block that rolls along the side where the cable 4 falls off is provided with a concave arc-shaped groove.

[0024] During normal operation of the electric hoist, the elastic force of the torsion spring and the centrifugal force on the hook 9 are less than the magnetic force of the two magnets attracting each other. At the same time, the electromagnet 14 is energized, and the guide rod 13 is not in contact with the locking block. However, when the rotation speed of the drum 6 exceeds the set threshold, the centrifugal force on the hook 9 on the rotating disk 8 increases, causing the two magnets to separate and the magnetic force to decrease. The elastic potential energy of the torsion spring and the centrifugal force on the hook 9 drive the hook 9 to flip outward, so that the end of the hook 9 engages with the locking groove on the inner wall of the fixed disk and locks it in place. At the same time, the operator manually cuts off the power to the electric hoist. After the electromagnet 14 is de-energized, the magnetic force of the electromagnet 14 on the magnetic push rod disappears, and the return spring 15 pushes out the electromagnetic push rod, causing the electromagnetic push rod to engage with the locking block, thereby locking the fixed disk and the rotating disk 8, and then locking the drum 6 to avoid safety accidents. This effectively improves the safety protection performance of the electric hoist, ensures the safety of personnel during construction and building use, and reduces economic losses caused by accidents.

[0025] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A safety lifting device for construction safety engineering, comprising a housing, a motor mounted on the housing, a roller inside the housing and driven by the motor, a cable wound on the roller, and a hook mounted on the cable, characterized in that: It also includes a fixed disk that is fixed to the housing and a rotating disk that rotates coaxially with the roller. The rotating disk is provided with several hooks, and the fixed disk is provided with several slots into which the hooks can be engaged. When the rotational speed of the roller exceeds a set threshold, the hooks are engaged in the slots.

2. The safety protection lifting device for construction safety engineering according to claim 1, characterized in that, The end of the hook is hinged to the rotating disk, and both the hook and the side wall of the rotating disk are provided with magnets that can magnetically attract each other.

3. The safety protection lifting device for construction safety engineering according to claim 2, characterized in that, The rotating disk has several hinges on its side wall, and the end of the hook is provided with a hinge shaft that connects to each hinge. A torsion spring is sleeved on the hinge shaft.

4. The safety protection lifting device for construction safety engineering according to claim 1, characterized in that, The side wall of the fixed disk is also uniformly provided with a number of electromagnetic protection components. The electromagnetic protection components include a fixed cylinder provided on the side wall of the fixed disk, a magnetic push rod slidably connected to the fixed cylinder, an electromagnet provided in the fixed cylinder and attracting the magnetic push rod, and a reset spring provided in the fixed cylinder and driving the magnetic push rod to reset. The side wall of the roller is provided with a locking block that abuts against the magnetic push rod.

5. A safety protection lifting device for construction safety engineering according to claim 4, characterized in that, The end of the card block is provided with a concave arc-shaped groove.

6. A safety protection lifting device for construction safety engineering according to claim 5, characterized in that, The magnetic push rod includes a magnetic plate slidably connected to the inner wall of the fixed cylinder and a guide rod connected to the magnetic plate and extending out of the fixed cylinder.

7. A safety protection lifting device for construction safety engineering according to claim 6, characterized in that, The reset spring is located between the magnetic plate and the inner wall of the fixed cylinder.

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