A shift gear box with flanged load cell for winch

Abstract

The utility model discloses a gear box of shifting with flange type load sensor for winch, including the input mechanism, drive mechanism, output mechanism and shift fork mechanism in the gear box, the input mechanism includes input gear shaft and the input gear on input gear shaft, drive mechanism includes first gear shaft and the first gear, second gear on first gear shaft, the first gear is engaged with input gear, output mechanism includes second gear shaft and the third gear, fourth gear, output gear on second gear shaft, the third gear is engaged with first gear shaft, and the fourth gear is engaged with second gear, the spline is connected on shift fork mechanism, and the spline is located between third gear and fourth gear, and the spline is engaged with third gear or fourth gear through shift fork mechanism control. The utility model realizes the high speed, low speed quick shift of gear box.

Description

Technical Field

[0001] This utility model relates to marine engineering supporting equipment technology, and more specifically, to a shift gearbox with a flange-type load sensor for winches. Background Technology

[0002] Before large marine transport platforms or floating cranes are deployed for offshore operations, they are secured to the construction position using a vessel-shifting and positioning winch. During operation, the working position of the large marine transport platform or floating crane needs to be adjusted by controlling the vessel-shifting and positioning winch.

[0003] When a ship-shifting winch moves a large marine transport platform or floating crane, the load on the ship is relatively large and the adjustment speed is relatively slow. Therefore, the corresponding winch gearbox needs to output both high torque and low speed.

[0004] A platform or floating crane typically requires eight or more ship-shifting and positioning winches. Heavy-duty ship-shifting and positioning winches have drum cables that can be as long as 1,500 meters or even over 2,000 meters. Each platform or floating crane is usually equipped with only one anchored vessel.

[0005] After the completion of offshore construction on a large marine transport platform or floating crane, the positioning winch needs to be retrieved. The platform or floating crane retrieves the anchors sequentially via an anchored vessel. After the anchors are retrieved, the platform or floating crane then activates the corresponding winches to retrieve the cables. The platform or floating crane needs to retrieve eight or more anchors and winch cables sequentially.

[0006] This demonstrates that the cable retrieval and anchoring operation is complex and time-consuming (typically requiring 8 hours or more). For the platform or floating crane to complete the retrieval and anchoring operation and set sail as quickly as possible, it needs to increase the speed of the winch retrieval of the cable. Therefore, the corresponding winch gearbox needs to output a high rotational speed.

[0007] To meet the above working conditions, the gearbox of the ship positioning winch needs to have a shifting function to adjust the speed of the gearbox output.

[0008] When a ship positioning winch is in operation, the ship will heel and trim, and the winch will tilt along with the ship in the water. Existing winches cannot adjust the tension of the wire rope during ship positioning according to real-time sea conditions. Utility Model Content

[0009] To address the shortcomings of existing technologies, the purpose of this invention is to provide a gearbox for winches with a flange-type load sensor. This gearbox enables rapid high-speed and low-speed gear shifting. Simultaneously, by installing a flange-type load sensor on the gearbox and transmitting the signal to the automatic control system via a data cable, it is used for dynamic load detection of the winch wire rope, thereby enabling the winch to have a constant tension automatic control function.

[0010] To achieve the above objectives, the present invention adopts the following technical solution:

[0011] A shift gearbox with a flange-type load sensor for winches includes an input mechanism, a transmission mechanism, an output mechanism, and a shift fork mechanism disposed within the gearbox.

[0012] The input mechanism includes an input gear shaft and an input gear disposed on the input gear shaft;

[0013] The transmission mechanism includes a first gear shaft and a first gear and a second gear disposed on the first gear shaft, wherein the first gear meshes with the input gear;

[0014] The output mechanism includes a second gear shaft and a third gear, a fourth gear, and an output gear disposed on the second gear shaft. The third gear meshes with the first gear shaft, and the fourth gear meshes with the second gear.

[0015] The shift fork mechanism is connected to a spline, which is located between the third gear and the fourth gear. The shift fork mechanism controls the spline to mesh with the third gear or the fourth gear.

[0016] Preferably, the spline is fitted with a spline sleeve.

[0017] Preferably, a load sensor is provided on the bearing of the first gear shaft, and the load sensor transmits a detection signal to the winch automatic control system via a data line.

[0018] Preferably, the load sensor is a flange-type load sensor.

[0019] This utility model provides a winch gearbox with a flange-type load sensor, which features precise high-speed / low-speed switching capability and can flexibly adapt to dual working conditions according to operational needs: When positioning a vessel, it switches to low-speed heavy-load mode, amplifying the output torque through a large transmission ratio to meet the strong load traction requirements for vessel positioning; during cable retrieval, it automatically switches to high-speed light-load mode, increasing the output speed with a small transmission ratio, thereby improving retrieval efficiency and significantly shortening operation time. A high-precision flange-type load sensor is integrated and installed on the flange face of the gearbox bearing seat. The sensor stably feeds back the tension electrical signal (4~20mA standard signal) to the winch PLC automatic control system via a shielded cable. The system compares the measured tension with the preset constant tension value in real time, and achieves closed-loop control by adjusting the motor speed and gearbox gear. This avoids excessive tension that could lead to cable breakage or hull damage, and also prevents insufficient tension from affecting positioning accuracy, achieving fully automated constant tension control without human intervention. Attached Figure Description

[0020] Figure 1 This is a front view schematic diagram of the gear shifting gearbox of this utility model;

[0021] Figure 2 This is a schematic diagram of the shift gearbox of this utility model in a high speed ratio state;

[0022] Figure 3 This is a schematic diagram of the shift gearbox of this utility model in a low speed ratio state. Detailed Implementation

[0023] To better understand the above-mentioned technical solution of this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0024] Combination Figure 1 As shown, this utility model provides a shift gearbox 100 with a flange-type load sensor for winches, including an input mechanism, a transmission mechanism, an output mechanism, and a shift fork mechanism 11 disposed within the gearbox 100.

[0025] The input mechanism includes an input gear shaft 1 and an input gear 2 mounted on the input gear shaft 1.

[0026] The transmission mechanism includes a first gear shaft 4 and a first gear 3 and a second gear 5 arranged from right to left on the first gear shaft 3. The first gear 3 meshes with the input gear 2.

[0027] The output mechanism includes a second gear shaft 8 and a third gear 6, a fourth gear 7, and an output gear 12 arranged from left to right on the second gear shaft 8. The third gear 6 meshes with the first gear shaft 4, and the fourth gear 7 meshes with the second gear 5.

[0028] The shift fork mechanism 11 is connected to a spline 10, which is located between the third gear 6 and the fourth gear 7. The shift fork mechanism 11 controls the spline 10 to mesh with the inner and outer splines of the third gear 6 or the fourth gear 7 respectively. The gear on the meshing side drives the second gear shaft 8 to rotate, while the gear on the non-meshing side rotates freely.

[0029] Spline 10 is fitted with spline sleeve 9. Both spline 10 and spline 9 serve to transmit power. Spline 9 and spline 10 are driven by the meshing of internal and external splines.

[0030] A load sensor 13 is installed on the right bearing of the first gear shaft 4. The load sensor 13 transmits the detection signal to the winch automatic control system through the data line 14. The automatic control system obtains the dynamic load tension of the winch wire rope through calculation, so that the winch has a constant tension automatic control function.

[0031] Load sensor 13 is a flange-type load sensor.

[0032] Combination Figure 2As shown, the shift fork mechanism 11 drives the spline 10 to move to the left. At this time, the shift gearbox of this utility model transmits a large speed ratio and outputs low speed and high torque. The transmission route at this time is as follows: input gear shaft 1 → input gear 2 → first gear 3 → first gear shaft 4 → third gear 6 → spline 10 → spline 9 → second gear shaft 8 → output gear 12.

[0033] Combination Figure 3 As shown, the shift fork mechanism 11 drives the spline 10 to move to the right. At this time, the shift gearbox of this utility model transmits a small speed ratio and outputs high speed and small torque. The transmission route at this time is as follows: input gear shaft 1 → input gear 2 → first gear 3 → first gear shaft 4 → second gear 5 → fourth gear 7 → spline 10 → spline 9 → second gear shaft 8 → output gear 12.

[0034] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present utility model and are not intended to limit the present utility model. Any changes or modifications to the above embodiments within the scope of the essential spirit of the present utility model will fall within the scope of the claims of the present utility model.

Claims

1. A shift gearbox with a flange-type load sensor for a winch, characterized in that: It includes an input mechanism, a transmission mechanism, an output mechanism, and a shift fork mechanism located within the gearbox; The input mechanism includes an input gear shaft and an input gear disposed on the input gear shaft; The transmission mechanism includes a first gear shaft and a first gear and a second gear disposed on the first gear shaft, wherein the first gear meshes with the input gear; The output mechanism includes a second gear shaft and a third gear, a fourth gear, and an output gear disposed on the second gear shaft. The third gear meshes with the first gear shaft, and the fourth gear meshes with the second gear. The shift fork mechanism is connected to a spline, which is located between the third gear and the fourth gear. The shift fork mechanism controls the spline to mesh with the third gear or the fourth gear.

2. The shift gearbox with flange-type load sensor for winches according to claim 1, characterized in that: The spline is fitted with a spline sleeve.

3. The shift gearbox with flange-type load sensor for winches according to claim 1, characterized in that: A load sensor is provided on the bearing of the first gear shaft, and the load sensor transmits the detection signal to the winch automatic control system via a data line.

4. The shift gearbox with flange-type load sensor for winches according to claim 3, characterized in that: The load sensor is a flange-type load sensor.

Images