Built-in brake device of electric hoist motor

Abstract

The utility model relates to the technical field of electric hoists, in particular to a built-in brake device of an electric hoist motor. A motor is installed in the box body, a brake base is installed on one side wall of the box body, a coupler penetrates through the interior of the motor, one end of the coupler penetrates through the box body to the interior of the brake base, a spring is installed on the outer wall of the coupler, and a detachable brake wheel body is installed in the brake base. A fixing and dismounting assembly is arranged between the brake wheel body and the coupler, and the brake wheel body is rapidly mounted and dismounted through the fixing and dismounting assembly. According to the utility model, a two-half assembly structure formed by the first brake wheel module and the second brake wheel module is matched with the fixed disassembly assembly for use, so that the brake wheel body is simple and quick to assemble and disassemble. When the brake device needs to be maintained, parts need to be replaced or other operations need to be carried out, complex tools and steps are not needed, and time and labor cost are saved.

Description

Technical Field

[0001] This utility model relates to the field of electric hoist technology, and more specifically, to a built-in braking device for an electric hoist motor. Background Technology

[0002] The built-in braking device in an electric hoist motor is a braking system integrated within the motor, primarily used for rapid braking when the motor is powered off, preventing accidental movement or falls of the equipment. This device typically includes components such as the motor housing, stator, rotor, magnetic generator, brake disc, and brake spring. When the motor is powered on, the magnetic generator produces a magnetic field that separates the brake disc from the end cover, allowing the motor to operate normally. When the motor is powered off, the magnetic force disappears, and the brake spring brings the brake disc into close contact with the end cover, generating frictional torque for rapid braking. The built-in braking device in the electric hoist motor has a compact structure; the magnetic generator is located inside the motor stator and connected to the rotor.

[0003] Braking devices are typically located inside the motor, but their concealed location makes inspection and replacement difficult, increasing maintenance costs and time. When a problem arises requiring inspection or replacement, the complexity and time-consuming nature of the maintenance work necessitates prolonged motor downtime. This severely impacts production efficiency for companies reliant on electric hoists, leading to production delays and economic losses. Therefore, we propose a built-in braking device for electric hoist motors. Utility Model Content

[0004] The purpose of this utility model is to provide a built-in braking device for an electric hoist motor to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides a built-in braking device for an electric hoist motor, comprising a housing, an electric motor installed inside the housing, a brake seat installed on one side wall of the housing, a coupling passing through the inside of the electric motor, one end of the coupling passing through the housing to the inside of the brake seat, a detachable brake wheel body installed inside the brake seat, and a fixing and disassembling assembly provided between the brake wheel body and the coupling, wherein:

[0006] The installation and removal of the brake wheel body can be completed quickly using the fixed disassembly assembly.

[0007] As a further improvement to this technical solution, the brake wheel body includes a first brake wheel module and a second brake wheel module. The brake wheel body is divided into two halves by the first brake wheel module and the second brake wheel module. The surfaces of the first brake wheel module and the second brake wheel module are provided with grooves. The side wall of the coupling is provided with a mating groove, wherein the mating groove and the two grooves are sized to fit together and are connected.

[0008] As a further improvement to this technical solution, the fixing and disassembly assembly includes a nut, which has a common thread engagement with the mating groove and the two recesses, and the first brake wheel module and the second brake wheel module are tightened and fixed to the coupling by the nut.

[0009] As a further improvement to this technical solution, a fan is installed on the outer wall of the top of the coupling. The fan is located on one side of the brake wheel body. A cover is bolted to the side wall of the brake seat. Several heat dissipation holes are opened on the surface of the cover.

[0010] As a further improvement to this technical solution, a spring is installed on the outer wall of the coupling, and the spring is located between the brake seat and the motor.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] The electric hoist's motor incorporates a built-in braking device. Firstly, the two-part assembly structure, consisting of a first brake wheel module and a second brake wheel module, along with the use of fixing and disassembly components, makes the installation and removal of the brake wheel body simple and quick. When maintenance, component replacement, or other operations are required, no complicated tools or procedures are needed, saving time and labor costs. Secondly, the design of the fan and heat dissipation holes forms an excellent heat dissipation system. During prolonged operation, it effectively dissipates heat generated by the motor and other components, preventing overheating that could lead to performance degradation, damage, or even safety accidents, thus ensuring the reliability and durability of the device. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0015] Figure 3 For the present utility model Figure 2 Schematic diagram of the structure at point A;

[0016] Figure 4 This is a cross-sectional schematic diagram of the overall structure of this utility model.

[0017] The meanings of the labels in the diagram are as follows:

[0018] 100. Housing; 101. Motor; 102. Brake seat; 1010. Coupling; 200. Brake wheel body; 300. Fixing and disassembly assembly; 201. First brake wheel module; 202. Second brake wheel module; 301. Nut; 1012. Fan; 1020. Housing cover; 1021. Heat dissipation hole; 1011. Spring. Detailed Implementation

[0019] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] Please see Figures 1-4 As shown, this embodiment provides a built-in braking device for an electric hoist motor, including a housing 100. Considering that when the braking device malfunctions and needs inspection and replacement, the motor needs to be shut down for a long time due to the complexity and time-consuming nature of maintenance. This would seriously affect the production efficiency of enterprises that rely on electric hoists for production, causing delays in production schedules and resulting in economic losses. Therefore, the specific implementation is as follows: A motor 101 is installed inside the housing 100, and a brake seat 102 is installed on one side wall of the housing 100. A coupling 1010 passes through the motor 101, and one end of the coupling 1010 passes through the housing 100 to the interior of the brake seat 102. A detachable brake wheel body 200 is installed inside the brake seat 102, and a fixing and disassembly assembly 300 is provided between the brake wheel body 200 and the coupling 1010.

[0021] The installation and removal of the brake wheel body 200 can be completed quickly using the fixed disassembly assembly 300.

[0022] The improvement in this embodiment is as follows:

[0023] The design of the fixed disassembly component 300 makes the installation and disassembly of the brake wheel body 200 simple and quick. When it is necessary to repair, maintain, or replace parts of the braking system, the operator can easily complete the operation, greatly reducing equipment downtime and maintenance costs.

[0024] First, to facilitate quick disassembly and maintenance of the brake wheel body 200, the brake wheel body 200 includes a first brake wheel module 201 and a second brake wheel module 202. The brake wheel body 200 is divided into two halves by the first brake wheel module 201 and the second brake wheel module 202. Grooves are formed on the surfaces of both the first brake wheel module 201 and the second brake wheel module 202, and a mating groove is formed on the side wall of the coupling 1010. The mating groove and the two grooves are sized to fit together and are interconnected. The fixing and disassembly assembly 300 includes a nut 301, which is threaded into the mating groove and the two grooves. The nut 301 is used to tighten and fix the first brake wheel module 201 and the second brake wheel module 202 to the coupling 1010.

[0025] First, remove the box cover 1020 connected by bolts to expose the brake wheel body 200. Then, simply loosen the nut 301 to disengage it from the groove and the limiting groove, and separate the first brake wheel module 201 and the second brake wheel module 202.

[0026] Secondly, considering that the motor 101 and brake wheel body 200 will generate heat during the operation of the device, leading to a reduction in the service life of the device, a fan 1012 is installed on the outer wall of the top of the coupling 1010. The fan 1012 is located on one side of the brake wheel body 200, and a cover 1020 is bolted to the side wall of the brake seat 102. The surface of the cover 1020 has several heat dissipation holes 1021. The fan 1012 rotates with the rotation of the coupling 1010 to dissipate heat from the motor 101 and the braking system. The fan 1012 runs continuously, drawing in outside air through the heat dissipation holes 1021 and blowing it into the motor 101 and the brake seat 102, carrying away the heat generated by the components and keeping the device operating within a suitable temperature range.

[0027] In practical use, the electric hoist motor with built-in braking device is activated when the user connects the power supply to the motor 101, causing it to rotate. The rotational power of the motor 101 is transmitted to the brake wheel body 200 via the coupling 1010. The coupling 1010 drives the connected working mechanism to move, and the electric hoist begins to perform lifting tasks. When it is necessary to stop the electric hoist, the motor 101 is de-energized, but the rotational inertia of the coupling 1010 causes it to continue rotating. At this time, due to the interaction between the coupling 1010 and the brake wheel body 200, the brake wheel body 200 presses tightly against the coupling 1010, using friction to prevent the coupling 1010 from rotating. During braking, the spring 1011 is compressed, absorbing some rotational energy and acting as a buffer, making the braking process smoother. When it is necessary to restart the electric hoist, the motor 101 is re-energized, and the coupling 1010 begins to rotate. Driven by the electric motor 101, the friction between the brake wheel body 200 and the coupling 1010 is overcome, and the coupling 1010 gradually accelerates its rotation. As the coupling 1010 rotates, the spring 1011 gradually returns to its original state, reducing the pressure between the brake wheel body 200 and the coupling 1010 until both are completely released from braking, and the electric hoist resumes normal operation. At this time, the fan 1012 rotates along with the coupling 1010 to dissipate heat from the electric motor 101 and the braking system. The fan 1012 continues to run, drawing in outside air through the heat dissipation holes 1021 and blowing it into the electric motor 101 and the brake seat 102, carrying away the heat generated by the components and keeping the device operating within a suitable temperature range.

[0028] When the brake wheel body 200 needs to be inspected or replaced, first remove the box cover 1020 connected by bolts to expose the brake wheel body 200. Then, simply loosen the nut 301 to disengage the nut 301 from the groove and the limiting groove, and separate the first brake wheel module 201 and the second brake wheel module 202.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A built-in braking device for an electric hoist motor, comprising a housing (100), characterized in that: An electric motor (101) is installed inside the housing (100). A brake seat (102) is installed on one side wall of the housing (100). A coupling (1010) passes through the electric motor (101). One end of the coupling (1010) passes through the housing (100) to the inside of the brake seat (102). A detachable brake wheel body (200) is installed inside the brake seat (102). A fixing and disassembly assembly (300) is provided between the brake wheel body (200) and the coupling (1010). The installation and removal of the brake wheel body (200) can be completed quickly using the fixed disassembly assembly (300).

2. The built-in braking device of the electric hoist motor according to claim 1, characterized in that: The brake wheel body (200) includes a first brake wheel module (201) and a second brake wheel module (202). The brake wheel body (200) is divided into two halves by the first brake wheel module (201) and the second brake wheel module (202). The first brake wheel module (201) and the second brake wheel module (202) are both provided with grooves. The coupling (1010) has a mating groove on its side wall. The mating groove and the two grooves are sized to fit each other and are connected.

3. The built-in braking device of the electric hoist motor according to claim 1, characterized in that: The fixed disassembly assembly (300) includes a nut (301), which is threadedly engaged with the mating groove and two recesses. The nut (301) is used to tighten and fix the first brake wheel module (201) and the second brake wheel module (202) to the coupling (1010).

4. The built-in braking device of the electric hoist motor according to claim 1, characterized in that: A fan (1012) is installed on the outer wall of the top of the coupling (1010). The fan (1012) is located on one side of the brake wheel body (200). A cover (1020) is bolted to the side wall of the brake seat (102). Several heat dissipation holes (1021) are opened on the surface of the cover (1020).

5. The built-in braking device of the electric hoist motor according to claim 1, characterized in that: A spring (1011) is installed on the outer wall of the coupling (1010), and the spring (1011) is located between the brake seat (102) and the motor (101).

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