Winch device driven by built-in hydraulic motor

Abstract

The utility model discloses a winch device driven by built-in hydraulic motors, which belongs to the technical field of winches and comprises a winch drum, a support shaft, a U-shaped base and double rows of hydraulic motors. The double-row hydraulic motor comprises a left annular stator, a right annular stator, an annular movable partition plate, a left annular rotor, a right annular rotor, a plurality of left plungers, a plurality of right plungers, a plurality of left rolling shafts, a plurality of right rolling shafts, a left oil distribution ring, a right oil distribution ring, connecting bolts, a left annular end cover and a right annular end cover. The two ends of the supporting shaft are fixed to the U-shaped machine base. A plurality of built-in double-row hydraulic motors are adopted to directly drive the drum winch to work, the defect that the winch is large in size is overcome, and the drum winch has the advantages of being safe, reliable, compact in structure and small in size and rotational inertia. The hydraulic motor adopts a multi-action inner curve radial plunger double-row motor, the displacement of the motor is increased due to the double-row arrangement, the output torque is increased, and the dynamic and static response characteristics of the winch are improved.

Description

Technical Field

[0001] This utility model relates to the field of winch technology, specifically to a winch device driven by a built-in hydraulic motor. Background Technology

[0002] Ultra-deep drilling operations are generally carried out using floating drilling platforms or drilling vessels. The winch is the most important and critical piece of equipment in ultra-deep drilling operations. It is the core of the drilling machine, and almost the entire working process depends on the winch, including raising and lowering the drill string, and raising, lowering, and storing cables exceeding 10,000 meters.

[0003] Currently, the most mature marine winches are electric winches, which use AC variable frequency motors and multi-axis input drives to operate. They are generally large in size and weight. Because they lack energy recovery capabilities, electric winches consume electrical energy for braking, resulting in excessive installed power. Compared to electric winches, hydraulic winches offer significant advantages such as high reliability, rapid response, low power consumption, and smaller and lighter actuators. Furthermore, the use of multiple hydraulic motors to drive the winch meets the ultra-high power requirements of multi-functional winches for ultra-deep drilling, gradually placing them among the leading marine operating equipment.

[0004] In terms of the structural layout of hydraulic winch mechanisms, current methods typically involve arranging multiple motors on both sides of the winch drum, driving the entire winch drum to rotate via a reduction gear. This structure results in a large moment of inertia for the winch mechanism, as well as a large size and mass. Excessive moment of inertia severely affects the dynamic characteristics of the winch, impacting its accuracy and increasing power consumption. Utility Model Content

[0005] The purpose of this invention is to provide a winch device driven by a built-in hydraulic motor. This hydraulic winch is characterized by safety and reliability, compact structure, small size and moment of inertia, and good dynamic response characteristics.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A winch device driven by a built-in hydraulic motor includes a winch drum, a support shaft, and a U-shaped base. It also includes a double-row hydraulic motor, comprising a left annular stator, a right annular stator, an annular moving partition, a left annular rotor, a right annular rotor, multiple left plungers, multiple right plungers, multiple left rollers, multiple right rollers, a left distribution ring, a right distribution ring, connecting bolts, a left annular end cap, and a right annular end cap. Both ends of the support shaft are fixed to the U-shaped base. Multiple hydraulic grooves are distributed on the circumferential surfaces of the left and right annular stators. The left and right annular stators are fixed to the support shaft. One end of each of the multiple left plungers and one end of each of the multiple right plungers are respectively installed in the hydraulic grooves of the left and right annular stators. The inner surfaces of the left and right annular rotors are composed of multiple arc-shaped curved surfaces. Left and right rollers are respectively provided in the arc grooves at the other ends of the multiple left plungers and the arc grooves at the other ends of the multiple right plungers. The left and right rollers press against the inner surfaces of the left and right annular rotors, respectively. An annular movable partition is located between the left and right annular rotors. Connecting bolts connect the left annular rotor, the annular movable partition, and the right annular rotor into a single integrated rotor. The left and right annular end caps are mounted on the support shaft via bearings and fixed to both ends of the integrated rotor by the connecting bolts. Multiple oil guide holes are distributed on the inner ring surfaces of the left and right oil distribution rings, and multiple oil distribution holes are distributed on the end faces of the left and right oil distribution rings. The left and right oil distribution rings are fixed to the support shaft, and the oil guide holes on the left and right oil distribution rings communicate with the oil supply channel within the support shaft. The oil distribution holes on the end faces of the left and right oil distribution rings communicate with the oil passages on the end faces of the left and right annular stators, respectively. The oil passages within the left and right annular stators communicate with the hydraulic grooves on the left and right annular stators, respectively.

[0008] Furthermore, both the left and right annular stators are fixed to the support shaft by the cooperation of splines and spline slots; the integrated rotor is fixedly connected to the winch drum by the cooperation of rectangular splines and rectangular spline slots.

[0009] Furthermore, flanges are fixedly installed at both ends of the winch drum.

[0010] Furthermore, the U-shaped base is provided with lifting mechanisms on both sides, which are used to lift the flanges at both ends of the support shaft or the winch drum during maintenance.

[0011] Furthermore, the U-shaped base is equipped with a hydraulic braking device, which clamps the flange to achieve braking action.

[0012] Furthermore, the hydraulic braking device includes a support, a dual-output hydraulic cylinder, a left caliper arm, a right caliper arm, a left brake pad, and a right brake pad. The left and right brake pads are located on both sides of the flange for clamping the flange. The left and right brake pads are respectively installed at one end of the left and right caliper arms. The other ends of the left and right caliper arms are respectively fixed to the left and right piston rods of the dual-output hydraulic cylinder. The dual-output hydraulic cylinder is fixed on the support, and the support is fixed on the U-shaped base.

[0013] Furthermore, the side wall of the support is provided with a slide rail, on which a left slider and a right slider are provided. The left clamp arm and the right clamp arm are respectively mounted and fixed on the left slider and the right slider. The dual-output hydraulic cylinder is provided with a left return spring and a right return spring. The left return spring and the right return spring are respectively used to reset the left piston rod and the right piston rod when the oil pressure is released.

[0014] Furthermore, the surface of the winch drum has rope grooves. These grooves on the outer circumference of the drum allow the first layer of rope to be wound around the drum in an orderly, staggered manner, while the second layer of rope falls into the gaps between the first layer. This reduces the tension on the drum caused by the disordered arrangement of the ropes, thus improving its service life.

[0015] Furthermore, the flange surface features a partially perforated design. This perforated design reduces roller stress and improves the stress state.

[0016] The beneficial effects of this utility model are as follows:

[0017] This application's built-in hydraulic motor driven winch device uses multiple built-in double-row hydraulic motors to directly drive the drum winch, solving the problem of the winch's bulky size. The motor housing acts as the rotor, directly supporting and driving the winch drum, significantly reducing the drum thickness, eliminating the need for a reduction gear, and reducing the mass of the rotating parts. This results in advantages such as low inertia and a compact structure, improving the winch's transmission efficiency. The hydraulic motors are multi-acting internal curve radial piston double-row motors. The double-row configuration increases the motor's displacement and output torque, improving the winch's dynamic and static response characteristics. During maintenance, the lifting mechanism replaces the U-shaped base to support the winch drum. The drum cover and winch frame side plates are removed, and the faulty motor is pushed out of the drum, facilitating maintenance. The winch has complete overall functionality, a compact structure, low rotational inertia, and strong practicality. Attached Figure Description

[0018] The present invention will be further described with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the present invention. For those skilled in the art, other drawings can be obtained based on the following drawings without creative effort:

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 for Figure 1 The side view shown;

[0021] Figure 3 for Figure 1 The diagram shows the structure of the double-row hydraulic motor.

[0022] Figure 4 for Figure 3 The diagram shows the structure of the left annular stator.

[0023] Figure 5 for Figure 3 The diagram shows the structure of the left annular rotor.

[0024] Figure 6 for Figure 3 The diagram shows the structure of the left plunger and the left roller.

[0025] Figure 7 for Figure 3 The diagram shows the structure of the left oil distribution ring;

[0026] Figure 8 for Figure 3 The assembly diagram of the left annular stator, left annular rotor and left plunger is shown.

[0027] Figure 9 for Figure 1 The diagram shows the structure of the hydraulic braking device.

[0028] In the diagram: 1. Winch drum; 2. Support shaft; 3. U-shaped base; 4. Double-row hydraulic motor; 5. Flange; 6. Lifting mechanism; 7. Hydraulic brake device; 8. Left annular stator; 9. Right annular stator; 10. Annular moving partition; 11. Left annular rotor; 12. Right annular rotor; 13. Left plunger; 14. Right plunger; 15. Left roller; 16. Right roller; 17. Left distribution ring; 18. Right distribution ring; 19. Connecting bolt; 20. Left annular end cover; 21. 1. Right annular end cap; 22. Hydraulic groove; 23. Arc-shaped curved surface; 24. Arc groove; 25. Oil distribution hole; 26. Oil supply channel; 27. Spline; 28. Support; 29. ​​Dual output hydraulic cylinder; 30. Left clamp arm; 31. Right clamp arm; 32. Left brake pad; 33. Right brake pad; 34. Left piston rod; 35. Right piston rod; 36. Oil guide hole; 37. Slide rail; 38. Left slider; 39. Right slider; 40. Left return spring; 41. Right return spring. Detailed Implementation

[0029] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0030] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper surface", "lower surface", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "forward", "reverse", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0031] like Figure 1 , 2 As shown, a winch device driven by a built-in hydraulic motor includes a winch drum 1, a support shaft 2, and a U-shaped base 3. It also includes a double-row hydraulic motor 4. The winch drum 1 is mounted on the support shaft 2 via the double-row hydraulic motor 4, and both ends of the support shaft 2 are fixed to the U-shaped base 3. Flanges 5 are fixedly mounted on both ends of the winch drum 4. Lifting mechanisms 6 are provided on both sides of the U-shaped base 3, which are used to lift the flanges 5 at both ends of the winch drum 1 during maintenance. A hydraulic brake device 7 is provided on the U-shaped base 3, which clamps the flanges 5 to achieve braking.

[0032] like Figure 3 , 4As shown in Figures 5, 6, 7, and 8, the double-row hydraulic motor 4 includes a left annular stator 8, a right annular stator 9, an annular moving partition 10, a left annular rotor 11, a right annular rotor 12, multiple left plungers 13, multiple right plungers 14, multiple left rollers 15, multiple right rollers 16, a left distribution ring 17, a right distribution ring 18, a connecting bolt 19, a left annular end cap 20, and a right annular end cap 21. Multiple hydraulic grooves 22 are distributed on the circumferential surfaces of the left annular stator 8 and the right annular stator 9. The left annular stator 8 and the right annular stator 9 are fixed to a support shaft. On the 2nd, one end of a plurality of left plungers 13 and one end of a plurality of right plungers 14 are respectively installed in the hydraulic grooves of the left annular stator 8 and the right annular stator 9. The inner surfaces of the left annular rotor 8 and the right annular rotor 9 are composed of multiple arc-shaped curved surfaces 23. Left rollers 15 and right rollers 16 are respectively provided in the arc grooves 24 at the other end of the plurality of left plungers 13 and the arc grooves at the other end of the plurality of right plungers 14. The left rollers 15 and right rollers 16 press against the inner surfaces of the left annular rotor 11 and the right annular rotor 12. The annular moving partition 10 is located at Between the left annular rotor 11 and the right annular rotor 12, the connecting bolt 19 connects the left annular rotor 12, the annular moving partition 10, and the right annular rotor 12 into a single integrated rotor. The left annular end cap 20 and the right annular end cap 21 are mounted on the support shaft 2 via bearings and are located at both ends of the integrated rotor. The left annular end cap 20 and the right annular end cap 21 are connected to the integrated rotor via the connecting bolt 19. Multiple oil guide holes 36 are distributed on the inner annular surfaces of the left oil distribution ring 17 and the right oil distribution ring 18. Multiple oil distribution holes 25 are distributed on the end face of 8. The left oil distribution ring 17 and the right oil distribution ring 18 are fixed on the support shaft 2, and the oil guide holes 36 on the left oil distribution ring 17 and the right oil distribution ring 18 are connected to the oil supply channel 26 in the support shaft 2. The oil distribution holes 25 on the end faces of the left oil distribution ring 17 and the right oil distribution ring 18 are respectively connected to the oil passage holes 26 on the end faces of the left annular stator 8 and the right annular stator 9. The oil passage holes 26 in the left annular stator 8 and the right annular stator 9 are respectively connected to the hydraulic grooves 22 on the left annular stator 8 and the right annular stator 9.

[0033] The left annular stator 8 and the right annular stator 9 are both fixed to the support shaft 2 by the cooperation of spline 27 and spline groove; the integrated rotor is fixedly connected to the winch drum 1 by the cooperation of rectangular spline and rectangular spline groove.

[0034] like Figure 9As shown, the hydraulic braking device 7 includes a support 28, a dual-output hydraulic cylinder 29, a left caliper arm 30, a right caliper arm 31, a left brake pad 32, and a right brake pad 33. The left brake pad 32 and right brake pad 33 are located on both sides of the flange 5 to clamp the flange 5. The left brake pad 32 and right brake pad 33 are respectively installed at one end of the left caliper arm 30 and the right caliper arm 31, and the other ends of the left caliper arm 30 and the right caliper arm 31 are respectively fixed to the left piston rod 34 and the right piston rod 35 of the dual-output hydraulic cylinder 29. The dual-output hydraulic cylinder 29 is fixed on the support 28, which is fixed on the U-shaped base 3. The side wall of the support 28 is provided with a slide rail 37, on which a left slider 38 and a right slider 39 are provided. The left clamp arm 30 and the right clamp arm 31 are respectively installed and fixed on the left slider 38 and the right slider 39. The dual-output hydraulic cylinder 29 is provided with a left return spring 40 and a right return spring 41. The left return spring 40 and the right return spring 41 are respectively used to reset the left piston rod 34 and the right piston rod 35 when the oil pressure is released.

[0035] Rope winding grooves are formed on the surface of winch drum 1. Rope winding grooves are formed on the outer circumference of the drum, so that the first layer of rope is wound around the drum in an orderly staggered manner, and the second layer of rope falls into the gaps between the first layer of rope, which reduces the tension pressure on the drum caused by the disordered arrangement of the rope and improves the service life.

[0036] In addition, the flange 5 has a partially perforated design. This perforated design reduces roller stress and improves the stress state.

[0037] Furthermore, those skilled in the art can combine and integrate the different embodiments or examples described herein, as well as the features of those different embodiments or examples, without contradiction. Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

[0038] Working Principle: The hydraulic motor in this application adopts a double-row motor with multi-acting internal curved radial pistons. The double-row configuration increases the motor's displacement and output torque, improving the winch's dynamic and static response characteristics. For winches operating at depths exceeding 10,000 meters and with a total rope length exceeding 4,500 meters, the flange dimensions on both sides of the drum are designed to meet the diameter requirements for 15 layers of rope wound on the drum, ensuring the rope does not detach from the drum. Rolling bearings and sealing gaskets are placed in the contact gap between the drum cover and the drum shaft to reduce wear and prevent leakage. The rollers inside the double-row motor are in close contact with the arc-shaped curved surface inside the rotor; the reaction force at the contact point generates torque on the rotor, causing the motor rotor to rotate.

Claims

1. An in-line hydraulic motor driven winch arrangement comprising a winch drum, a support shaft and a U-shaped frame, characterised in that: It also includes a double-row hydraulic motor, which comprises a left annular stator, a right annular stator, an annular moving partition, a left annular rotor, a right annular rotor, multiple left plungers, multiple right plungers, multiple left rollers, multiple right rollers, a left distribution ring, a right distribution ring, connecting bolts, a left annular end cap, and a right annular end cap. Both ends of the support shaft are fixed to a U-shaped base. Multiple hydraulic grooves are distributed on the circumferential surfaces of the left and right annular stators. The left and right annular stators are fixed to the support shaft. One end of each of the multiple left plungers and one end of each of the multiple right plungers are respectively installed in the hydraulic grooves of the left and right annular stators. The inner surfaces of the left and right annular rotors are composed of multiple arc-shaped curved surfaces. Left rollers and right rollers are respectively provided in the arc grooves at the other ends of the multiple left plungers and the arc grooves at the other ends of the multiple right plungers. The left and right rollers press against the left annular rotor. The inner surface of the right annular rotor, the annular moving partition plate is located between the left and right annular rotors, and the connecting bolts connect the left annular rotor, the annular moving partition plate and the right annular rotor into an integral rotor. The left annular end cap and the right annular end cap are mounted on the support shaft by bearings and are fixed to both ends of the integral rotor by the connecting bolts. The inner ring surfaces of the left and right oil distribution rings have multiple oil guide holes, and the end faces of the left and right oil distribution rings have multiple oil distribution holes. The left and right oil distribution rings are fixed on the support shaft, and the oil guide holes on the left and right oil distribution rings are connected to the oil supply channel in the support shaft. The oil distribution holes on the end faces of the left and right oil distribution rings are respectively connected to the oil passage holes on the end faces of the left and right annular stators. The oil passage holes in the left and right annular stators are respectively connected to the hydraulic grooves on the left and right annular stators.

2. The built-in hydraulic motor driven winch apparatus of claim 1, wherein: The left and right annular stators are both fixed to the support shaft by splines and spline slots; the integrated rotor is fixedly connected to the winch drum by rectangular splines and rectangular spline slots.

3. The built-in hydraulic motor driven winch apparatus of claim 2, wherein: Flanges are fixedly installed at both ends of the winch drum.

4. The built-in hydraulic motor driven winch apparatus of claim 3, wherein: The U-shaped base is equipped with lifting mechanisms on both sides, which are used to lift the flanges at both ends of the support shaft or the winch drum during maintenance.

5. The built-in hydraulic motor driven winch apparatus of claim 4, wherein: The U-shaped base is equipped with a hydraulic braking device, which clamps the flange to achieve braking action.

6. The built-in hydraulic motor driven winch apparatus of claim 5, wherein: The hydraulic braking device includes a support, a dual-output hydraulic cylinder, a left caliper arm, a right caliper arm, a left brake pad, and a right brake pad. The left and right brake pads are located on both sides of the flange to clamp the flange. The left and right brake pads are respectively installed at one end of the left and right caliper arms. The other ends of the left and right caliper arms are respectively fixed to the left and right piston rods of the dual-output hydraulic cylinder. The dual-output hydraulic cylinder is fixed on the support, and the support is fixed on the U-shaped base.

7. A built-in hydraulic motor driven winch apparatus as claimed in claim 6 wherein: The support has a slide rail on its side wall, and a left slider and a right slider are provided on the slide rail. The left clamp arm and the right clamp arm are respectively installed and fixed on the left slider and the right slider. The dual-output hydraulic cylinder is provided with a left return spring and a right return spring. The left return spring and the right return spring are respectively used to reset the left piston rod and the right piston rod when the oil pressure is released.

8. The built-in hydraulic motor driven winch apparatus of claim 1, wherein: The surface of the winch drum has rope grooves.

9. The built-in hydraulic motor driven winch apparatus of claim 3, wherein: The flange has a partially openwork design.

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