An integrated electric hoisting system

Abstract

This utility model provides an integrated electric winch system, including a motor and a drum connected by a drive mechanism. The output end of the motor is connected to a reduction gear mechanism, and the output end of the reduction gear mechanism is connected to the drum to drive the drum to rotate. Both the motor and the reduction gear mechanism are installed inside the drum. The winch system proposed in this utility model integrates the motor, motor controller, brake, and reduction gear mechanism inside the drum, maintaining the installation dimensions of the electric winch close to those of the original hydraulic winch, thus achieving a high degree of integration and saving installation space.

Description

Technical Field

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

[0002] When designing an electric winch system, cost must be considered. The goal is to minimize manufacturing costs to maximize profit, while also taking into account the limited installation space of the entire vehicle. Therefore, high speed and high integration are required for the electric winch. 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. The winch system requires a high-torque power source, but under current design conditions, motors meeting these requirements are expensive. This issue needs to be addressed in the design. Existing electric winch systems typically connect the motor directly to a low-speed planetary reducer in the drum. This not only results in high costs but also requires a large installation space.

[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. In the aforementioned prior art publications, the winching system solutions all have the drive motor or reducer and other power components externally located on the winch drum, resulting in low integration. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an integrated electric hoisting system, including a motor and a drum connected by a drive mechanism. The output end of the motor is connected to a reduction gear mechanism, and the output end of the reduction gear mechanism is connected to the drum to drive the drum to rotate. Both the motor and the reduction gear mechanism are installed inside the drum.

[0006] Furthermore, the deceleration mechanism includes a first deceleration unit and a second deceleration unit, and the motor, the first deceleration unit, and the second deceleration unit are sequentially connected in a transmission manner.

[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 hollow shell structure with a stepped cylindrical shape inside the drum, and the drum has a coaxial motor mounting space and a first reduction unit mounting space.

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

[0010] Furthermore, the left support end extends into the interior of the second planetary gear reducer and serves as the planet carrier second and its planet gear second of the second planetary gear reducer. The outer gear ring second of the second planetary gear reducer is connected to the drum through the first flange inside the drum.

[0011] Furthermore, the first reduction unit is a planetary gear reducer, the outer gear ring of the planetary gear reducer is fixedly installed in the installation space of the first reduction unit, and the output end of the planet carrier of the planetary gear reducer is connected to the sun gear of the planetary gear reducer.

[0012] Furthermore, the drum is also provided with a second flange, which is connected to a support shaft, and the end of the support shaft is connected to a right support.

[0013] Furthermore, a brake is also connected between the first deceleration unit and the second deceleration unit.

[0014] Furthermore, a motor controller is installed inside the left support at the end of the motor, and the motor controller and the motor are electrically connected.

[0015] Compared with the prior art, the technical solution of this application has the following beneficial effects: The hoisting system proposed by this utility model integrates the motor, motor controller, brake, reduction mechanism and other components into the drum, keeping the installation size of the electric hoist close to that of the original hydraulic hoist, thus achieving a high degree of integration of the hoisting system and saving installation space. Attached Figure Description

[0016] Figure 1 : Schematic diagram of the overall structure of the hoisting system;

[0017] Figure 2 : Schematic diagram 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 and Figure 2 As shown: An integrated electric hoisting system includes a motor 1 and a drum 2 connected by a drive mechanism. The output end of the motor 1 is connected to a reduction gear mechanism, and the output end of the reduction gear mechanism is connected to the drum 2 to drive the drum 2 to rotate. Both the motor 1 and the reduction gear mechanism are installed inside the drum 2. The hoisting system provided in this embodiment integrates both the motor 1 and the reduction gear mechanism within the internal space of the drum 2, making full use of the installation space of the drum 2 and greatly improving the integration of the entire hoisting system.

[0020] In a more preferred embodiment, the reduction mechanism includes a first reduction unit 4 and a second reduction unit 5, with the motor 1, the first reduction unit 4, and the second reduction unit 5 sequentially connected in a transmission manner. In this embodiment, the speed ratio of the first reduction unit 4 is set to a high-speed reduction unit, and the speed ratio of the second reduction unit 5 is set to a low-speed reduction unit. This two-stage reduction design can meet the high power and torque requirements of the hoisting system. Furthermore, 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, a 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. It also offers more efficient space utilization; the high-speed, low-torque motor has a relatively small radial dimension, and the first reduction unit 4, as a high-speed reduction unit, does not require a large gear ratio and can also be designed with a small radial dimension. Thus, both can be housed within the internal space of the drum 2, which originally had a limited radial dimension. The axial internal space of the drum 2 is relatively more abundant than the radial space, and the transmission design of the motor 1, the first reduction unit 4, and the second reduction unit 5 being coaxial in sequence also makes better use of the axial internal space of the drum 2.

[0021] The first reduction unit 4 and the second reduction unit 5 can be either planetary gear reducers or parallel shaft reducers, depending on the internal space of the drum 1. However, a planetary gear reducer is preferred, as this ensures coaxial transmission without eccentricity and allows for more efficient use of the radial space within 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 gear 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 motor 1 and the reduction gear.

[0023] In a more preferred embodiment, the left support 3 is a hollow shell structure with a stepped cylindrical shape inside the drum 2, and the support 3 has a coaxial motor mounting space 31 and a first reduction unit mounting space 32.

[0024] In a more preferred embodiment, the second reduction unit 5 is a planetary gear reducer 2, whose sun gear 2 51 is connected to the output end of the first reduction unit 4. In this embodiment, the planetary gear reducer 2, as a low-speed reduction unit, can achieve reduction and torque increase at a larger speed ratio, meeting the output power and torque requirements.

[0025] In a more preferred embodiment, the left support 3 extends into the interior of the second planetary gear reducer and serves as the planet carrier 52 and planetary gear 53 of the second planetary gear reducer. The external gear ring 54 of the second planetary gear reducer is connected to the drum 2 via the first flange 21 inside the drum 2. The end structure design of the left support 3 fully considers the axial space inside the drum 2. On the one hand, its end extends directly into the interior of the second planetary gear reducer, and on the other hand, it serves as the planet carrier of the second planetary gear reducer. Thus, when the motor 1 is working, the first reduction unit 4 drives the sun gear 51 of the second planetary gear reducer to rotate. Since the other end of the left support 3 is fixedly connected to the external support mechanism, the planet carrier 52 is fixed as an integral part of the left support 3, and drives the drum 2 to rotate via the external gear ring 54.

[0026] In a more preferred embodiment, the first reduction unit 4 is a planetary gear reducer, with the outer ring gear 41 of the planetary gear reducer fixedly mounted in the first reduction unit mounting space 32. The output end of the planet carrier 42 of the planetary gear reducer is connected to the sun gear 51 of the planetary gear reducer. In this embodiment, the left support 3 serves as the mounting base for the outer ring gear 41 of the planetary gear reducer. Thus, the left support 3 serves as both a mounting component for the planetary gear reducer and the motor 1, as the planet carrier for the planetary gear reducer, and as the mounting base for the outer ring gear 41 of the planetary gear reducer. Furthermore, its other end relative to the planetary gear reducer also serves as a side support for the entire hoisting system. The aforementioned highly integrated structural design allows for full utilization of the internal space of the left support 3.

[0027] In a more preferred embodiment, the drum 2 is further provided with a second flange 22, which is connected to the support shaft 6. The end of the support shaft 6 is 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. The right support 7 has a support bearing for connecting the support shaft 6, so that the drum 2 can rotate under the joint support of the right support 7 and the left support 3.

[0028] In a more preferred embodiment, a brake 8 is also connected between the first reduction unit 4 and the second reduction unit 5. It is more reasonable to install the brake 8 in the first reduction unit 4. After the reduction is achieved by the first reduction unit 4, the output speed is reduced, and the brake 8 can be a lower-cost and smaller braking unit.

[0029] In a more preferred embodiment, a motor controller 9 is also installed inside the left support 3 and at the end of the motor 1, and the motor controller 9 and the motor 1 are electrically connected.

[0030] 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.

[0031] 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. An integrated electric hoisting system comprising a motor (1) and a drum (2) connected in drive, characterized in that, The output end of the motor (1) is connected to the speed reduction mechanism, and the output end of the speed reduction mechanism is connected to the drum (2) to drive the drum (2) to rotate; the motor (1) and the speed reduction mechanism are both installed in the internal space of the drum (2).

2. The integrated electric hoisting system as described in claim 1, characterized in that, The deceleration mechanism includes a first deceleration unit (4) and a second deceleration unit (5), and the motor (1), the first deceleration unit (4), and the second deceleration unit (5) are connected in sequence for transmission.

3. The integrated electric hoisting 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 integrated 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). The drum (2) has a coaxial motor mounting space (31) and a first deceleration unit mounting space (32).

5. The integrated electric winch system as described in claim 4, characterized in that, The second reduction unit (5) is a planetary gear reducer, and its sun gear (51) is connected to the output end of the first reduction unit (4).

6. The integrated electric hoisting system as described in claim 5, characterized in that, The left support (3) extends into the interior of the second planetary gear reducer and is connected to the second planetary carrier (52) and its second planetary gear (53) of the second planetary gear reducer. The second outer gear ring (54) of the second planetary gear reducer is connected to the drum (2) through the first flange (21) inside the drum (2).

7. The integrated electric hoisting system as described in claim 6, characterized in that, The first reduction unit (4) is a planetary gear reducer. The outer gear ring (41) of the planetary gear reducer is fixedly installed in the installation space (32) of the first reduction unit. The output end of the planet carrier (42) of the planetary gear reducer is connected to the sun gear (51) of the planetary gear reducer.

8. The integrated electric hoisting system as described in claim 3, characterized in that, The drum (2) is also provided with a second flange (22), which is connected to the support shaft (6), and the end of the support shaft (6) is connected to the right support (7).

9. The integrated electric hoisting system as described in claim 2, characterized in that, A brake (8) is also connected between the first deceleration unit (4) and the second deceleration unit (5).

10. The integrated electric hoisting system as described in claim 2, characterized in that, Inside the left support (3), at the end of the motor (1), a motor controller (9) is also installed, and the motor controller (9) and the motor (1) are electrically connected.

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