Safety braking device of electric hoist crane

Abstract

The utility model relates to the related technical field of hoisting machinery design, in particular to an electric hoist crane safety braking device which comprises a braking mechanism, a braking motor is arranged in the braking mechanism, the braking motor is installed above a braking matching seat, the braking motor is connected with a clamping lead screw below the braking matching seat, and the clamping lead screw is connected with the braking matching seat. The bottom of the clamping lead screw is matched with holes in the two sides of a brake mounting seat in a rotating mode through threads, brake blocks are arranged in the brake mounting seat, the bottoms of the brake blocks are symmetrically mounted in the brake mounting seat through springs, and a brake matching seat is fixedly connected with a lower contact ring. According to the utility model, the additional brake mechanism is arranged in the winch, so that a secondary brake safety function is provided under the existing brake condition of equipment, and the fault of the embedded brake function caused by the damage of an equipment circuit is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field related to hoisting machinery design, in particular to a safety brake device for an electric hoist crane. Background Art

[0002] Traditional electric hoist cranes usually use motor-supported brakes to brake the motor. This braking method can meet the needs of lifting operations under normal circumstances.

[0003] In certain specific situations, its limitations become apparent, such as: the risk of motor brake failure. When the motor brake system of the electric hoist fails or malfunctions, the heavy object may lose control and fall at an excessive speed, posing a serious safety hazard. The risk of reducer damage: If the reducer of the electric hoist is damaged, it will also cause the heavy object to fall out of control, increasing the possibility of accidents. The insufficiency of a single braking system: Many traditional electric hoist cranes rely on only a single braking system and lack a backup or auxiliary braking mechanism, making it difficult to provide sufficient safety protection at critical moments.

[0004] Therefore, the utility model proposes a safety brake device for an electric hoist crane to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a safety brake device for an electric hoist crane to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a safety brake device for an electric hoist crane, the safety brake device for an electric hoist crane comprising: a brake mechanism, a brake motor is arranged in the brake mechanism, the brake motor is installed above the brake matching seat, the brake motor is connected to the clamping screw below, the bottom of the clamping screw rotates in cooperation with the openings on both sides of the brake mounting seat, and the threads are engaged, a brake block is arranged in the brake mounting seat, the bottom of the brake block is symmetrically mounted in the brake mounting seat by a spring, and the brake matching seat is fixedly connected to the contact ring below.

[0007] Preferably, a groove is provided on the contact surface between the brake block and the brake mounting seat, and a protrusion is provided at the contact position between the bottom of the brake block and the spring.

[0008] Preferably, the contact ring is semicircular and is rotatably connected to the rotating shaft.

[0009] Preferably, the rotating shaft is arranged in the winch, the outer surface of the rotating shaft and the turntable are nested with each other and formed as one piece, and the turntable is arranged inside the protective shell.

[0010] Preferably, the braking mechanism is arranged inside the winch, the winch is fixedly connected to the hook below, the winch is connected to the upper crane body through a cable, and a motor is arranged on the left side of the crane body.

[0011] Preferably, a simple locking device is provided on the hook.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The utility model provides a secondary braking insurance function when the equipment has a braking condition by arranging an additional braking mechanism in the winch, thereby preventing the built-in braking function from malfunctioning due to damage to the equipment circuit. The braking mechanism arranged in the winch adopts an independent braking motor to drive the clamping screw, thereby driving the brake matching seat and the brake mounting seat to move toward each other, so that the contact ring pushes the rotating shaft into the brake block. The brake block locks the rotating shaft under the limit of the internal spring, thereby achieving the braking effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the winch structure of the utility model;

[0016] Figure 3 This is a half-section view of the winch of the utility model;

[0017] Figure 4 This is a half-section view of the practical braking mechanism.

[0018] In the figure: crane body 1, motor 2, cable 3, winch 4, protective shell 41, turntable 42, rotating shaft 43, hook 5, brake mechanism 6, brake motor 61, clamping screw 62, brake mounting seat 63, brake block 64, brake matching seat 65, contact ring 66. DETAILED DESCRIPTION

[0019] In order to clearly and completely describe the purpose and technical solution of the present invention and make its advantages more clearly understood, the following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention and are not intended to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See also Figure 1-4 , the utility model provides the following three preferred embodiments:

[0021] Example 1

[0022] A safety brake device for an electric hoist crane, comprising: a brake mechanism 6, wherein a brake motor 61 is provided in the brake mechanism 6, the brake motor 61 being mounted above a brake mating seat 65, the brake motor 61 being connected to a clamping screw 62 below, the bottom of the clamping screw 62 being rotated in cooperation with openings on both sides of a brake mounting seat 63, and being threadedly engaged, a brake block 64 being provided in the brake mounting seat 63, the bottom of the brake block 64 being symmetrically mounted in the brake mounting seat 63 by a spring, the brake mating seat 65 being fixedly connected to a contact ring 66 below, the brake mechanism 6 being a core component, and having a built-in brake motor 61, and realizing a braking function through motor drive;

[0023] The brake motor 61 is installed above the brake mating seat 65 and is connected to the clamping screw 62 below to form a power transmission chain. The bottom of the clamping screw 62 rotates with the brake mounting seat 63 through the opening and adopts a threaded connection method to ensure the stability and reliability of the transmission. A brake block 64 is provided in the brake mounting seat 63, which is symmetrically installed through springs to achieve an elastic braking effect. The brake mating seat 65 is fixedly connected to the lower contact ring 66 to ensure the effective transmission of the braking force.

[0024] Example 2

[0025] On the basis of the first embodiment, a groove is formed on the contact surface between the brake block 64 and the brake mounting seat 63, and a protrusion is provided at the bottom of the brake block 64 where it contacts the spring; the contact ring 66 is semicircular and is rotatably connected to the rotating shaft 43; the rotating shaft 43 is disposed in the capstan 4, and the outer surface of the rotating shaft 43 and the rotating disk 42 are nested with each other and formed as one piece, and the rotating disk 42 is disposed inside the protective shell 41;

[0026] A groove is provided on the contact surface between the brake block 64 and the brake mounting seat 63 to increase the contact area and improve the braking force. A protrusion is provided at the bottom of the brake block 64 at the contact position with the spring to ensure uniform application of the spring force and improve the braking response speed. The contact ring 66 is semicircular and is rotatably connected to the rotating shaft 43 to achieve effective transmission of the braking force and flexible execution of the braking action. The rotating shaft 43 is arranged in the winch 4, and is nested with the turntable 42 and formed as one piece to enhance the structural strength. The turntable 42 is arranged inside the protective shell 41 to provide necessary protection and support.

[0027] Example 3

[0028] On the basis of the second embodiment, the brake mechanism 6 is arranged inside the winch 4, the winch 4 is fixedly connected to the hook 5 below, the winch 4 is connected to the upper crane body 1 through the cable 3, and the motor 2 is provided on the left side of the crane body 1; a simple locking device is provided on the hook 5;

[0029] The braking mechanism 6 is arranged inside the winch 4, with a compact structure and space saving. The winch 4 is fixedly connected to the hook 5 below and is connected to the upper crane body 1 through a cable 3 to form a complete lifting system. A motor 2 is provided on the left side of the crane body 1 to provide power for the entire lifting operation. A simple locking device is provided on the hook 5 to increase the safety of the hanging of heavy objects.

[0030] Working principle: In actual use, the brake motor 61 drives the clamping screw 62, thereby driving the brake mating seat 65 and the brake mounting seat 63 to move toward each other, so that the contact ring 66 pushes the rotating shaft 43 into the brake block 64. The brake block 64 is limited by the internal spring and locks the rotating shaft 43 to achieve the braking effect.

[0031] Although the above describes the illustrative specific implementation methods of the present application so that those skilled in the art can understand the present application, the present application is not limited to the scope of the specific implementation methods. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present application defined and determined by the attached claims, all application creations based on the concept of the present application are protected.

Claims

1. A safety brake device for an electric hoist crane, characterized by: The electric hoist crane safety brake device comprises: a brake mechanism (6), a brake motor (61) is provided in the brake mechanism (6), the brake motor (61) is installed above the brake matching seat (65), the brake motor (61) is connected to the lower clamping screw (62), the bottom of the clamping screw (62) rotates in cooperation with the openings on both sides of the brake mounting seat (63), and the threads are engaged, a brake block (64) is provided in the brake mounting seat (63), the bottom of the brake block (64) is symmetrically installed in the brake mounting seat (63) by a spring, and the brake matching seat (65) is fixedly connected to the lower contact ring (66).

2. The electric hoist crane safety brake device according to claim 1, characterized in that: A groove is provided on the contact surface between the brake block (64) and the brake mounting seat (63), and a protrusion is provided at the bottom of the brake block (64) at the position where the brake block (64) contacts the spring.

3. The safety brake device for an electric hoist crane according to claim 1, characterized in that: The contact ring (66) is semicircular and is rotatably connected to the rotating shaft (43).

4. The safety brake device for an electric hoist crane according to claim 3, characterized in that: The rotating shaft (43) is arranged in the winch (4); the outer surface of the rotating shaft (43) and the rotating disk (42) are nested with each other and are integrally formed; the rotating disk (42) is arranged inside the protective shell (41).

5. The safety brake device for an electric hoist crane according to claim 4, characterized in that: The braking mechanism (6) is arranged inside the winch (4); the winch (4) is fixedly connected to a hook (5) below; the winch (4) is connected to an upper crane body (1) via a cable (3); and a motor (2) is arranged on the left side of the crane body (1).

6. The electric hoist crane safety brake device according to claim 5, characterized in that: The hook (5) is provided with a simple locking device.

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