A new type of electric hoisting system

Abstract

A novel electric hoisting system includes a motor and a drum connected by a drive mechanism. The output end of the motor is driven by a planetary gear reducer, and the output end of the planetary gear reducer is driven by the drum to drive its rotation. The output end of the motor is driven by a first reduction unit, and the output end of the first reduction unit is driven by the input end of the planetary gear reducer. The motor and the first reduction unit are externally located on the drum. This hoisting system, based on existing technology, adds a first reduction unit, which, when used with a low-torque motor, can meet the power and torque requirements of the entire hoisting system, thereby reducing costs.

Description

Technical Field

[0001] This utility model relates to the field of hoisting equipment technology, specifically a novel electric hoisting system. Background Technology

[0002] Against the backdrop of the carbon neutrality agreement, the electrification of road vehicles and non-road equipment has become the future development direction. With additional government subsidies for electrified products and increasing public acceptance of electrification, these products have broad development prospects. As a widely used superstructure in production processes, the electrification of winch systems is an inevitable trend due to the increasing demands for noise and emissions control in various applications, as well as energy conservation and emission reduction policies. When designing an electric winch system, cost must be considered, aiming to minimize manufacturing costs to maximize profits, while also taking into account the limited installation space of the vehicle. Therefore, high speed and high integration are required for electric winches. The motor, as the power source of the electric winch system, is its main component, and its cost significantly impacts the overall cost of the system. Winch systems require a high-torque power source, but under current design schemes, motors meeting these requirements are expensive, necessitating a design solution. Existing electric winch systems typically connect a high-torque motor directly to a low-speed planetary reducer in the drum, resulting in high design costs.

[0003] A search revealed existing technical documents related to electric winch systems. For example, the utility model patent publication number "CN219670039U" entitled "A Winch-Type Gate Opener with Small Occupancy" provides a winch-type gate opener with a small occupancy, belonging to the field of hydraulic machinery technology, and addresses the technical problems of large size and high foundation construction costs associated with winch-type gate openers. This gate opener includes a frame, a winch mechanism, and a pulley mechanism. The output shaft of the drive motor is connected to the input shaft of the reducer via a coupling. The reducer is installed inside the drum and is a direct-drive planetary gear reducer. The shafts of the drive motor, reducer, and drum are on the same horizontal line, reducing the space occupied by the equipment. The pulley mechanism includes a fixed pulley group, a balance pulley, and a movable pulley group. The fixed pulley group is located below the drum and mounted on the frame. The balance pulley is located to the side and below the fixed pulley group and rotatably connected to the frame. The lower end of the movable pulley group is connected to the gate. The pulley mechanism reduces the width of the opening below the closing platform.

[0004] For example, the invention patent publication document with publication number "CN110282570A" entitled "Internal Translation Electric Hoist Winching Device and its Working Method" relates to an internal translation electric hoist winching device and its working method. The internal translation electric hoist winching device includes a thin-walled cylindrical hoist shell, with a drum inside the hoist shell. One end of the hoist shell is connected to a motor flange via a shell flange, and the other end is connected to a safety brake via a shell flange. A disc brake motor is installed on the inner end face of the motor flange, and its motor shaft is connected to a drum flange welded to the inner wall of the drum via a motor bearing. The output end of the motor shaft is connected to an internal translation reducer via an intermediate shaft, and the internal translation reducer is connected to the safety brake. The aforementioned prior art publications regarding the winching system solutions all suffer from the aforementioned technical problem of excessively high costs for their drive motors or reducers and other power components. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a novel electric hoisting system, comprising a motor and a drum connected by transmission. The output end of the motor is connected to a planetary reducer, and the output end of the planetary reducer is connected to the drum to drive the drum to rotate. The output end of the motor is connected to a first reduction unit, and the output end of the first reduction unit is connected to the input end of the planetary reducer. The motor and the first reduction unit are externally mounted on the drum.

[0006] Furthermore, the planetary reducer is built into the drum.

[0007] Furthermore, a left support is coaxially installed inside the drum, and the motor and reduction mechanism are both installed inside the left support. The left end of the left support extends out of the drum end and is connected to the external support fixing mechanism.

[0008] Furthermore, the left support is a stepped cylindrical hollow shell structure inside the drum, with space for installing a planetary reducer inside.

[0009] Furthermore, the sun gear of the planetary reducer is connected to the output end of the first reduction unit.

[0010] Furthermore, the left support end extends into the inside of the drum and connects to the planetary carrier of the planetary reducer. The outer gear ring of the planetary reducer is connected to the drum to drive the drum to rotate.

[0011] Furthermore, the other end of the drum relative to the left support is also connected to the right support.

[0012] Furthermore, a brake is connected between the first reduction unit and the planetary reducer.

[0013] Furthermore, the first reduction unit is a parallel shaft reduction unit.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects: The hoisting system proposed by this utility model adds a first reduction unit on the basis of the prior art, which can be used in conjunction with a low torque motor to achieve the power and torque requirements of the entire hoisting system, thereby reducing costs. Attached Figure Description

[0015] Figure 1 Schematic diagram of the overall structure and principle of the hoisting system;

[0016] Figure 2 : Schematic diagram of the overall structure of the hoisting system;

[0017] Figure 3 : A schematic diagram of part of the internal structure of the hoisting system. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] like Figure 1 , Figure 2 and Figure 3 As shown: A novel electric hoisting system includes a motor 1 and a drum 2 connected by transmission. The output end of the motor 1 is connected to a planetary reducer 5, and the output end of the planetary reducer 5 is connected to the drum 2 to drive the drum 2 to rotate. The output end of the motor 1 is connected to a first reduction unit 4, and the output end of the first reduction unit 4 is connected to the input end of the planetary reducer 5. The motor 1 and the first reduction unit 4 are externally mounted on the drum 2.

[0020] In this embodiment, the speed ratio of the first reduction unit 4 is set to a high-speed reduction unit, which, together with the original planetary reducer 5, achieves two-stage reduction and torque increase. The power combination of the motor 1 and the first reduction unit 4 allows the motor 1 to be a high-speed, low-torque motor compared to existing technologies. For the same power output, the high-speed, low-torque motor is less expensive than a low-speed, high-torque motor. Although the first reduction unit 4 is added compared to existing technologies, the overall cost remains relatively low.

[0021] In a more preferred embodiment, the planetary reducer 5 is built inside the drum 2. In this embodiment, the axial internal space of the drum 2 is relatively abundant compared to the radial space. In order to ensure that the addition of the first reduction unit 4 does not increase the axial space of the entire hoisting system, the planetary reducer 5 is built inside the drum 2 to make full use of the axial internal space of the drum 2.

[0022] In a more preferred embodiment, a left support 3 is coaxially mounted inside the drum 2. The motor 1 and the reduction mechanism are both installed within the internal space of the left support 3. The left end of the left support 3 extends beyond the end of the drum 2 and connects to an external support fixing mechanism. In this embodiment, one function of the left support 3 is as an end support member, providing stable support at one end of the entire hoisting system. The left support 3 is installed inside the drum 2 without adding excessive axial space; its hollow interior reduces weight and provides space for the internal installation of the first reduction unit 4.

[0023] In a more preferred embodiment, the left support 3 is a stepped cylindrical hollow shell structure inside the drum 2, with an internal space 32 for mounting the planetary reducer 5. The stepped cylindrical hollow shell structure has a lighter design, and its stepped surface can also serve as the mounting and positioning surface for the end of the first reduction unit 4 shell.

[0024] In a more preferred embodiment, the sun gear 51 of the planetary reducer 5 is connected to the output end of the first reduction unit 4. The end of the left support 3 extends into the inside of the drum 2 and connects to the planet carrier 52 of the planetary reducer 5. The outer gear ring 54 of the planetary reducer 5 is connected to the drum 2, driving the drum 2 to rotate. Alternatively, the left support 3 can serve as a fixed seat for the outer gear ring 54 of the planetary reducer 5, keeping the outer gear ring 54 stationary, and connecting the output end of the planet carrier 52 to the drum 2, thereby driving the drum 2 to rotate.

[0025] In a more preferred embodiment, the other end of the drum 2 opposite to the left support 3 is also connected to the right support 7. The right support 7 and the left support 3 together provide stable support for both ends of the entire hoisting system.

[0026] In a more preferred embodiment, a brake 8 is also connected between the first reduction unit 4 and the planetary reducer 5. It is more reasonable to install the brake 8 in the first reduction unit 4. After the speed is reduced by the first reduction unit 4, the output speed is reduced, and the brake 8 can be a lower-cost and smaller brake unit.

[0027] In a more preferred embodiment, the first reduction unit 4 is a parallel shaft reduction unit. Parallel shaft reducers have a simple and reliable structure and occupy less space when designed for high-speed transmission ratios.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A new electric hoist system, comprising a motor (1) and a drum (2) in transmission connection, the output end of the motor (1) and a planetary reducer (5) in transmission connection, the output end of the planetary reducer (5) and the drum (2) in transmission connection for driving the drum (2) to rotate, characterized in that, The output end of the motor (1) is connected to the first reduction unit (4), and the output end of the first reduction unit (4) is connected to the input end of the planetary reducer (5). The motor (1) and the first reduction unit (4) are externally placed on the drum (2).

2. The novel electric hoisting system as described in claim 1, characterized in that, The planetary reducer (5) is built inside the drum (2).

3. The novel electric winch system as described in claim 2, characterized in that, The drum (2) is coaxially mounted with a left support (3). The motor (1) and the reduction mechanism are both installed in the internal space of the left support (3). The left end of the left support (3) extends out of the end of the drum (2) and is connected to the external support fixing mechanism.

4. The novel electric winch system as described in claim 3, characterized in that, The left support (3) is a hollow shell structure with a stepped cylindrical shape inside the drum (2), and has a space (32) for installing the planetary reducer (5).

5. The novel electric winch system as described in claim 4, characterized in that, The sun gear 2 (51) of the planetary reducer (5) is connected to the output end of the first reduction unit (4) for transmission.

6. The novel electric winch system as described in claim 5, characterized in that, The left support (3) extends into the inside of the drum (2) and is connected to the planet carrier (52) of the planetary reducer (5). The outer gear ring (54) of the planetary reducer (5) and the drum (2) are connected to drive the drum (2) to rotate.

7. The novel electric winch system as described in claim 6, characterized in that, The other end of the drum (2) relative to the left support (3) is also connected to the right support (7).

8. The novel electric hoisting system as described in claim 7, characterized in that, A brake (8) is also connected between the first reduction unit (4) and the planetary reducer (5).

9. The novel electric hoisting system according to any one of claims 1 to 8, characterized in that, The first deceleration unit (4) is a parallel shaft deceleration unit.

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