Planetary gearbox for hydraulic dual-drive input winch crane

Abstract

The utility model relates to a hydraulic dual-drive input winch crane epicyclic gearbox, which comprises a shell, hydraulic motors, input gear shafts, spline shafts, idle wheels and a multi-stage planetary gear train, the input gear shafts, the spline shafts, the idle wheels and the multi-stage planetary gear train are arranged in the shell, the two input gear shafts are arranged side by side, each input gear shaft is connected with one hydraulic motor, and each input gear shaft is connected with one hydraulic motor. The two input gear shafts are meshed with an idle gear at the same time, the idle gear is fixed to a spline shaft, the spline shaft is connected with a multi-stage planetary gear train, and the last-stage three-stage planetary gear train is connected with an output flange. The system is compact in structure, the hydraulic motors with small specifications are selected, unified conversion of a plurality of power sources is achieved, and therefore the efficiency and reliability of the system are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of marine cranes, in particular to a planetary gearbox for a hydraulic double-drive input winch crane. Background Art

[0002] A crane, also known as a ship crane or a marine crane, is a large deck machine on a ship. It is a device for loading and unloading cargo on a ship. A hydraulic crane is a commonly used loading and unloading equipment on ships.

[0003] The existing gearbox for cranes uses a low-speed, high-torque hydraulic motor to drive the drum to rotate alone. The single input power is relatively large, resulting in large specification limitations of the hydraulic motor, large energy loss, low transmission efficiency and high price. Utility Model Content

[0004] The utility model aims to overcome the above-mentioned shortcomings and provides a planetary gearbox for a hydraulic dual-drive input winch crane, which has a compact structure and uses a small-sized hydraulic motor to achieve unified conversion of multiple power sources, thereby improving system efficiency and reliability.

[0005] The purpose of the utility model is achieved in this way:

[0006] A planetary gearbox for a hydraulic dual-drive input winch crane comprises a housing, a hydraulic motor, an input gear shaft, a spline shaft, an idler gear and a multi-stage planetary gear train. The housing is provided with an input gear shaft, a spline shaft, an idler gear and a multi-stage planetary gear train. Two input gear shafts are arranged side by side, each input gear shaft is connected to a hydraulic motor, and the two input gear shafts are meshed with the idler gear at the same time. The idler gear is fixed on the spline shaft, and the spline shaft is connected to the multi-stage planetary gear train. The last three-stage planetary gear train is connected to the output flange.

[0007] Preferably, the multi-stage planetary gear train includes a primary planetary gear train, a secondary planetary gear train and a tertiary planetary gear train, the spline shaft is connected to the primary sun gear shaft, the primary planetary gear is meshed with the primary internal gear ring and the primary sun gear shaft at the same time, the primary planetary gear is connected to the primary planetary carrier, the primary planetary carrier is connected to the secondary sun gear, the secondary sun gear is gap-sleeved on the primary sun gear shaft, the secondary planetary gear is meshed with the secondary internal gear ring and the secondary sun gear at the same time, the secondary planetary gear is connected to the secondary planetary carrier, the secondary planetary carrier is spline-connected to the tertiary sun gear, the tertiary sun gear is gap-sleeved on the primary sun gear shaft, the tertiary planetary gear is meshed with the tertiary internal gear ring and the tertiary planetary gear at the same time, the tertiary planetary carrier is connected to the tertiary planetary gear, and the tertiary planetary carrier is fixedly arranged.

[0008] Preferably, the three-stage planetary carrier is fixed to the front shell of the shell, and the rear shell of the shell is fixed with an output flange, and the output flange is connected to the three-stage internal gear ring by bolts as a whole, becoming a component of the rear shell, and the front shell and the rear shell are connected by a support bearing.

[0009] Preferably, each input gear shaft is equipped with a brake, and the brake is used to brake the input gear shaft.

[0010] The beneficial effects of the utility model are:

[0011] Compact structure and light weight, which helps to reduce energy consumption and cost of equipment;

[0012] It has high reliability and stability, and can operate stably for a long time in a variety of harsh environments.

[0013] Wide range of applications: suitable for a variety of transmission requirements;

[0014] Enhanced flexibility: The reducer with dual input shaft design can quickly switch the transmission scheme without replacing the reducer, and can control the speed and torque according to actual needs, with strong adaptability;

[0015] Increased torque transmission capability: The dual input shaft setup enables unified conversion of multiple power sources, improving system efficiency and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model is a schematic diagram of the internal structure of a planetary gearbox for a hydraulic double-drive input winch crane.

[0017] Figure 2 It is a schematic diagram of the appearance structure of the utility model.

[0018] Among them: housing 1; hydraulic motor 2; input gear shaft 3; spline shaft 4; idler gear 5; output flange 6; first-stage sun gear shaft 7; first-stage planetary gear 8; first-stage planet carrier 9; first-stage internal gear ring 10; second-stage sun gear 11; second-stage planetary gear 12; second-stage planet carrier 13; second-stage internal gear ring 14; third-stage sun gear 15, third-stage planetary gear 16; third-stage planet carrier 17; third-stage internal gear ring 18; support bearing 19; brake 20. DETAILED DESCRIPTION

[0019] See also Figure 1 and Figure 2The utility model relates to a planetary gearbox for a hydraulic double-drive input winch crane, comprising a housing 1, a hydraulic motor 2, an input gear shaft 3, a spline shaft 4, an idler wheel 5, a primary planetary gear train, a secondary planetary gear train and a tertiary planetary gear train. The housing 1 is provided with an input gear shaft 3, a spline shaft 4, an idler wheel 5, a primary planetary gear train, a secondary planetary gear train and a tertiary planetary gear train. Two input gear shafts 3 are arranged side by side, each input gear shaft 3 is connected to a hydraulic motor 2, and the two input gear shafts 3 are meshed with the idler wheel 5 at the same time. The idler wheel 5 is fixed on the spline shaft 4, and the spline shaft 4 is connected to a multi-stage planetary gear train. The last-stage three-stage planetary gear train is connected to an output flange 6.

[0020] The first-stage planetary gear train includes a first-stage sun gear shaft 7, a first-stage planetary gear 8, a first-stage planet carrier 9 and a first-stage inner gear ring 10, the second-stage planetary gear train includes a second-stage sun gear 11, a second-stage planetary gear 12, a second-stage planet carrier 13 and a second-stage inner gear ring 14, and the third-stage planetary gear train includes a third-stage sun gear 15, a third-stage planetary gear 16, a third-stage planet carrier 17 and a third-stage inner gear ring 18. The first-stage planetary gear 8 is meshed with the first-stage inner gear ring 10 and the first-stage sun gear shaft 7 at the same time, the first-stage planetary gear 8 is connected to the first-stage planet carrier 9 through the first-stage planetary shaft, the first-stage planet carrier 9 is connected to the second-stage sun gear 11, the second-stage sun gear 11 is sleeved on the first-stage sun gear shaft 7, and the second-stage planetary gear 12 is meshed with the second-stage inner gear ring 18 at the same time. The secondary inner gear ring 14 and the secondary sun gear 11 are meshed, the secondary planetary gear 12 is connected to the secondary planetary carrier 13 through the secondary planetary shaft, the secondary planetary carrier 13 is splined to the tertiary sun gear 15, the tertiary sun gear 15 is sleeved on the primary sun gear shaft 7, the tertiary planetary gear 15 is meshed with the tertiary inner gear ring 18 and the tertiary planetary gear 16 at the same time, the tertiary planetary carrier 17 is connected to the tertiary planetary gear 16, the tertiary planetary carrier 17 is fixed to the front shell of the shell 1, the rear shell of the shell 1 is fixed with an output flange 6, the output flange 6 is connected to the tertiary inner gear ring 18 as a whole by bolts, and becomes a component of the rear shell, and the front shell and the rear shell are connected by a support bearing 19.

[0021] The two input gear shafts 3 are driven by their respective hydraulic motors 2. The two input gear shafts are meshed with the idler gear at the same time. The idler gear transmits the power to the first-stage sun gear shaft, driving the first-stage planetary gear and the first-stage planetary carrier to rotate. The first-stage planetary carrier drives the second-stage sun gear to rotate. The second-stage sun gear drives the second-stage planetary gear and the second-stage planetary carrier to rotate. The second-stage planetary carrier drives the third-stage sun gear to rotate. Since the third-stage planetary carrier is fixed, the third-stage sun gear drives the third-stage ring gear to rotate. The third-stage ring gear drives the output flange to rotate. The power is finally output through the output flange.

[0022] Each input gear shaft 3 is equipped with a brake 20, and the brake 20 is used to brake the input gear shaft. With dual hydraulic motors and dual brakes, even if one brake fails, the other brake can still brake effectively, thereby improving the safety performance of the gearbox; the two brakes ensure balanced distribution of braking force, and its braking performance is more stable.

[0023] The planet carrier (three-stage planet carrier) of the final planetary gear train is fixed on the front shell of the shell, which is more convenient to process and simpler to install, making the output torque more stable and reducing vibration and noise.

[0024] In addition to the above embodiments, the present invention also includes other implementation modes. Any technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.

Claims

1. A planetary gearbox for a hydraulic dual drive input winch crane, characterized in that: It includes a housing, a hydraulic motor, an input gear shaft, a spline shaft, an idler gear and a multi-stage planetary gear train. The housing is provided with an input gear shaft, a spline shaft, an idler gear and a multi-stage planetary gear train. Two input gear shafts are arranged side by side, each input gear shaft is connected to a hydraulic motor, and the two input gear shafts are meshed with the idler gear at the same time. The idler gear is fixed on the spline shaft, and the spline shaft is connected to the multi-stage planetary gear train. The last-stage three-stage planetary gear train is connected to the output flange.

2. A planetary gearbox for a hydraulic dual drive input winch crane according to claim 1, characterized in that: The multi-stage planetary gear train includes a primary planetary gear train, a secondary planetary gear train and a tertiary planetary gear train. The spline shaft is connected to the primary sun gear shaft, the primary planetary gear is meshed with the primary inner gear ring and the primary sun gear shaft at the same time, the primary planetary gear is connected to the primary planet carrier, the primary planet carrier is connected to the secondary sun gear, the secondary sun gear is gap-sleeved on the primary sun gear shaft, the secondary planetary gear is meshed with the secondary inner gear ring and the secondary sun gear at the same time, the secondary planetary gear is connected to the secondary planet carrier, the secondary planet carrier is spline-connected to the tertiary sun gear, the tertiary sun gear is gap-sleeved on the primary sun gear shaft, the tertiary planetary gear is meshed with the tertiary inner gear ring and the tertiary planetary gear at the same time, the tertiary planet carrier is connected to the tertiary planetary gear, and the tertiary planet carrier is fixedly arranged.

3. A planetary gearbox for a hydraulic dual drive input winch crane according to claim 2, characterized in that: The three-stage planet carrier is fixed to the front shell of the shell, and the rear shell of the shell is fixed with an output flange. The output flange is connected to the three-stage internal gear ring by bolts and becomes a component of the rear shell. The front shell and the rear shell are connected by a support bearing.

4. The planetary gearbox for hydraulic dual drive input winch crane according to claim 1, characterized in that: Each of the input gear shafts is equipped with a brake, and the brake is used for braking the input gear shaft.

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