Integrated electric winch system

Abstract

The integrated electric winch system comprises a motor and a winding drum which are in transmission connection, the output end of the motor is in transmission connection with a speed reducing mechanism, and the output end of the speed reducing mechanism is in transmission connection with the winding drum and used for driving the winding drum to rotate; and the motor and the speed reducing mechanism are arranged in the inner space of the winding drum. According to the winch system, the motor, the motor controller, the brake, the speed reducing mechanism and the like are all integrated into the winding drum, the installation size of the electric winch is kept close to the installation size of an original hydraulic winch, the winch system is highly integrated, and the installation space is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of hoisting equipment, and particularly to an integrated electric hoisting system. Background Art

[0002] The electrification of road vehicles and non-road equipment has become the future development direction. With the additional subsidies for electrified products by the state and the gradually deepening recognition of electrification by people, electrified products have broad development prospects. As an upper-mounted machine widely used in the production process, with the requirements of application scenarios for noise and emissions, as well as the policy requirements for energy conservation and emission reduction, the electrification of the hoisting system has become an inevitable trend. When designing an electric hoisting system, the cost issue needs to be considered. It is necessary to reduce the manufacturing cost as much as possible to achieve the maximum profit. At the same time, the problem of limited installation space of the whole vehicle is also considered. Therefore, certain requirements are put forward for the high-speed and highly integrated electric hoist. The motor, as the power source of the electric hoisting system, is its main component, and the cost of the motor affects the cost of the entire hoisting system to a certain extent. For the hoisting system, it requires a high-torque power source. Under the existing design scheme, the price of the motor that meets the conditions is relatively high, and this problem needs to be addressed in the design. In the existing electric hoisting systems, the motor is generally directly connected to the low-speed planetary reducer in the drum. This not only has a high cost but also requires a large installation space.

[0003] Through retrieval, there are already relevant technical literature on electric hoisting systems disclosed in the prior art. For example, the utility model patent authorization announcement document with the publication number "CN219670039U" and the name "A hoisting type gate hoist with small occupied space". It provides a hoisting type gate hoist with small occupied space, belonging to the technical field of water conservancy machinery, and is used to solve the technical problems of the relatively large volume of the hoisting type gate hoist and the relatively high required infrastructure construction cost. This gate hoist includes a frame, a hoisting mechanism, and a pulley mechanism. The output shaft of the driving motor is connected to the input shaft of the reducer through a coupling. The reducer is installed in the drum, and the reducer is a direct-connected planetary gear reducer. The axes of the driving motor, the reducer, and the drum are on the same horizontal line, which can reduce the occupied space of the equipment; the pulley mechanism includes a fixed pulley group, a balance pulley, and a movable pulley group. The fixed pulley group is arranged below the drum and installed on the frame. The balance pulley is arranged below the side of the fixed pulley group and is rotatably connected to the frame. The lower end of the movable pulley group is connected to the gate, and the pulley mechanism can reduce the width of the hole slit opened below the closing platform.

[0004] For example, the invention patent publication document with the publication number "CN110282570A" and the name "Inner translation electric hoist winding device and its working method". It relates to an inner translation electric hoist winding device and its working method. An inner translation electric hoist winding device includes a thin-walled cylindrical hoist housing. Inside the hoist housing, there is a drum. One end of the hoist housing is connected to the motor flange through the housing flange, and the other end is connected to the safety brake through the housing flange; on the inner end face of the motor flange, a disc brake motor is installed, and its motor shaft is connected to the drum flange welded on the inner wall of the drum through a motor bearing. The output end of the motor shaft is connected to an inner translation speed reducer through an intermediate shaft, and the inner translation speed reducer is connected to the safety brake. In the prior art publication document regarding the winding system solution, the power components such as the drive motor or the speed reducer are all externally placed outside the winding drum, and the integration degree is relatively low. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides an integrated electric winding system, including a motor and a drum connected in transmission. The output end of the motor is in transmission connection with a speed reduction mechanism, and the output end of the speed reduction mechanism is in transmission connection with the drum to drive the drum to rotate; both the motor and the speed reduction mechanism are installed in the internal space of the drum.

[0006] Further, the speed reduction mechanism includes a first speed reduction unit and a second speed reduction unit, and the motor, the first speed reduction unit, and the second speed reduction unit are sequentially connected in transmission.

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

[0008] Further, the left support is a stepped cylindrical hollow shell structure inside the drum, and there are a motor installation space and a first speed reduction unit installation space coaxially inside the drum.

[0009] Further, the second speed reduction unit is a planetary gear reducer two, and its sun gear two is in transmission connection with the output end of the first speed reduction unit.

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

[0011] Further, the first speed reduction unit is a planetary gear reducer one. The outer gear ring one of the planetary gear reducer one is fixedly installed in the first speed reduction unit installation space, and the output end of the planet carrier of the planetary gear reducer one is in transmission connection with the sun gear two of the planetary gear reducer two.

[0012] Furthermore, a second flange is provided inside the reel, the second flange is connected to the support shaft, and the end of the support shaft is connected to the right support.

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

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

[0015] Compared with the prior art, the technical solution of the present application has the following beneficial effects: the winch system proposed in the present invention integrates the motor, motor controller, brake, deceleration mechanism, etc. into the drum, keeping the installation dimensions of the electric winch close to the installation dimensions of the original hydraulic winch, making the winch system highly integrated and saving installation space. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 : Schematic diagram of the overall structure of the winch system; Figure 2 : Schematic diagram of the internal structure of the winch system. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] like Figure 1 and Figure 2 As shown: an integrated electric hoisting system, comprising a motor 1 and a drum 2 in transmission connection, the output end of the motor 1 is in transmission connection with a reduction mechanism, the output end of the reduction mechanism is in transmission connection with the drum 2 for driving the drum 2 to rotate; the motor 1 and the reduction mechanism are both installed in the internal space of the drum 2. The hoisting system provided in this embodiment has the motor 1 and the reduction mechanism built into the internal space of the drum 2, making full use of the installation space of the drum 2, so that the integration of the entire hoisting system is greatly improved.

[0019] In a more preferred embodiment, 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 sequentially connected in transmission. In this embodiment, the speed ratio of the first deceleration unit 4 is set to a high-speed deceleration unit, and the speed ratio of the second deceleration unit 5 is set to a low-speed deceleration unit. Such a two-stage deceleration design can meet the high-power torque requirements of the hoisting system. And the power combination of the motor 1 and the first deceleration unit 4 can make the motor 1 use a high-speed and low-torque motor relative to the prior art. Based on the same power, compared with the low-speed and high-torque motor, the cost of the high-speed and low-torque motor is lower. Although the first deceleration unit 4 is added relative to the prior art, the overall cost is still relatively low. And it is more reasonable for space utilization. The radial size of the high-speed and low-torque motor is relatively small. At the same time, the first deceleration unit 4 as a high-speed deceleration unit does not need to be too large and can also be designed as a smaller radial size, so that both can be built into the internal space of the drum 2 with limited radial size. The axial inner space of the drum 2 is relatively abundant compared to the radial space, and the coaxial transmission design of the motor 1 , the first reduction unit 4 , and the second reduction unit 5 in sequence also makes better use of the axial inner space of the drum 2 .

[0020] The first reduction unit 4 and the second reduction unit 5 can adopt a planetary gear reduction mechanism or a parallel shaft reduction mechanism, which can be combined according to the space inside the reel 1. However, it is preferred to adopt a planetary gear reduction mechanism, so that the transmission will be coaxial and non-eccentric, and the radial space inside the reel 2 can be more fully utilized.

[0021] In a more preferred embodiment, a left support 3 is coaxially installed inside the drum 2, and the motor 1 and the speed reduction mechanism are both installed in the inner 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. In this embodiment, one of the functions of the left support 3 is to serve as an end support member to provide a stable support at one end for the entire hoisting system. The left support 3 is installed inside the drum 2 and does not increase too much axial space. The inside is hollow, which reduces weight on the one hand and provides space for the motor 1 and the speed reduction mechanism on the other hand.

[0022] In a more preferred embodiment, the left support 3 is a hollow shell structure in a stepped cylindrical shape inside the reel 2 , and the support 3 has a coaxial motor installation space 31 and a first reduction unit installation space 32 .

[0023] In a more preferred embodiment, the second reduction unit 5 is a second planetary gear reducer, and its second sun gear 51 is drivingly connected to the output end of the first reduction unit 4. In this embodiment, the second planetary gear reducer is used as a low-speed reduction unit to achieve deceleration and torque increase at a larger speed ratio, meeting the output power and torque requirements.

[0024] In a more preferred embodiment, the end of the left support 3 extends into the second planetary gear reducer, and is connected as the second planet carrier 52 and its second planet gear 53 of the second planetary gear reducer. The second external gear ring 54 of the second planetary gear reducer is connected to the drum 2 through 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 directly extends into 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 operates, the first reduction unit 4 drives the second 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, at this time, the second planet carrier 52 remains fixed as a whole with the left support 3, and drives the drum 2 to rotate through the second external gear ring 54.

[0025] In a more preferred embodiment, the first reduction unit 4 is a first planetary gear reducer. The first external gear ring 41 of the first planetary gear reducer is fixedly installed in the first reduction unit installation space 32. The output end of the first planet carrier 42 of the first planetary gear reducer is drivingly connected to the second sun gear 51 of the second planetary gear reducer. In this embodiment, the left support 3 will serve as the fixed seat of the first external gear ring 41 of the first planetary gear reducer. Thus, the left support 3 serves both as the installation component of the first planetary gear reducer and the motor 1, and also as the planet carrier of the second planetary gear reducer. At the same time, it also serves as the fixed seat of the first external gear ring 41 of the first planetary gear reducer, and the other end relative to the second planetary gear reducer also serves as one side support of the entire hoisting system. The aforementioned highly integrated structure design makes full use of the internal space of the left support 3.

[0026] In a more preferred embodiment, a second flange 22 is further provided inside the drum 2. The second flange 22 connects the support shaft 6, and the end of the support shaft 6 is connected to the right support 7. The right support 7 and the left support 3 jointly provide stable support for both ends of the entire hoisting system. The right support 7 is provided with 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.

[0027] In a more preferred embodiment, a brake 8 is further connected between the first reduction unit 4 and the second reduction unit 5. It is more reasonable to install the brake 8 on the first reduction unit 4. After being decelerated by the first reduction unit 4, the rotational speed of the output end decreases, and the brake 8 can adopt a braking unit with lower cost and smaller size.

[0028] In a more preferred embodiment, a motor controller 9 is further installed inside the left support 3 at the end of the motor 1. The motor controller 9 is electrically connected to the motor 1.

[0029] It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variation thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising said element.

[0030] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

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

2. The integrated electric hoisting system according to claim 1, characterized in that, The reduction mechanism includes a first reduction unit (4) and a second reduction unit (5), and the motor (1), the first reduction unit (4), and the second reduction unit (5) are sequentially in transmission connection.

3. The integrated electric winch system according to claim 2, wherein, A left support (3) is coaxially installed inside the drum (2), both the motor (1) and the reduction mechanism are installed in the internal space of the left support (3), and the left end of the left support (3) extends out of the end of the drum (2) and is connected to an external support fixing mechanism.

4. The integrated electric hoisting system according to claim 3, wherein The left support (3) is a hollow shell structure with a stepped cylindrical shape inside the drum (2), and there are a motor installation space (31) and a first reduction unit installation space (32) coaxially inside the drum (2).

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

6. The integrated electric winch system according to claim 5, wherein The end of the left support (3) extends into the planetary gear reducer II and serves as the planet carrier II (52) of the planetary gear reducer II and is connected to its planet gear II (53), and the outer gear ring II (54) of the planetary gear reducer II is connected to the drum (2) through a first flange (21) inside the drum (2).

7. The integrated electric winch system according to claim 6, wherein, The first reduction unit (4) is a planetary gear reducer I, the outer gear ring I (41) of the planetary gear reducer I is fixedly installed in the first reduction unit installation space (32), and the output end of the planet carrier (42) of the planetary gear reducer I is in transmission connection with the sun gear II (51) of the planetary gear reducer II.

8. The integrated electric winch system according to claim 3, wherein A second flange (22) is further provided inside the drum (2), the second flange (22) connects the support shaft (6), and the end of the support shaft (6) is connected to the right support (7).

9. The integrated electric winch system according to claim 2, wherein, A brake (8) is also connected between the first reduction unit (4) and the second reduction unit (5).

10. The integrated electric winch system according to claim 2, characterized in that, An electric motor controller (9) is further installed at the end of the motor (1) inside the left support (3), and the electric motor controller (9) is electrically connected to the motor (1).

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