Winch for drilling

Abstract

The winch for drilling comprises a winch roller, a winch fixing shell, a speed reduction assembly, a one-way rotating assembly and a driving motor, the winch roller is rotationally connected with the winch fixing shell, and the speed reduction assembly and the one-way rotating assembly are arranged in an inner cavity of the winch roller; the driving motor comprises a motor rotating shaft, and one end of the motor rotating shaft is fixedly connected with the one-way rotating assembly. The one-way rotating assembly is used for controlling rotation and stop of a winch roller. After the steel wire of the drilling rod is wound around the winch roller shell, the driving motor drives the one-way rotating assembly in the winch roller to rotate, and then the speed reduction assembly and the winch roller are driven to rotate to wind the steel wire to pull up the drilling rod. When the drilling rod descends, only the one-way rotating assembly rotates, and the motor does not need to drive the deceleration center shaft to rotate. The problems that an existing winch and a speed reducer are large in overall size, and the speed reducer is prone to being affected by the outside are solved, and the drilling rod does not need to rotate actively in the lowering process.

Description

Technical Field

[0001] The present invention relates to the technical field of drilling equipment, in particular to a winch for drilling. Background Art

[0002] In field mining and drilling operations, reducers are widely used for the lifting and lowering of drill pipes. However, the reduction mechanism and the drum of most current reducers adopt a separate design. The overall structure is large in volume, and the reduction mechanism is easily affected by external factors, which is not conducive to transportation and installation in complex field environments. In addition, this structure has obvious shortcomings in the process of lowering the cable or steel rope: the lowering of the cable or steel rope requires the gradual drive of the motor, and continuous lowering cannot be achieved, which seriously affects the drilling efficiency. At the same time, the motor needs to run continuously during the entire lowering process, which not only increases energy consumption, but also aggravates the wear of the motor and reduces the service life of the equipment. Therefore, there is an urgent need for a reducer design with a more compact structure and higher efficiency to meet the higher requirements of field drilling for equipment performance and reliability. Summary of the Invention

[0003] The purpose of the present invention is to provide a device for a drilling winch to solve the current problems that the winch and reducer are large in size, the reducer is easily affected by external factors, the drilling rod cannot be lowered continuously during the lowering process, and the motor needs to work throughout the process.

[0004] In order to solve the above technical problems, the present invention provides a winch for drilling, including a winch drum, a winch fixed shell, a reduction assembly, a one-way rotation assembly and a drive motor. The winch drum is rotatably connected to the winch fixed shell, and the reduction assembly and the one-way rotation assembly are arranged in the inner cavity of the winch drum; the drive motor includes a motor rotating shaft, one end of the motor rotating shaft is fixedly connected to the one-way rotation assembly, and the reduction assembly includes a reduction center shaft, one end of the reduction center shaft is fixedly connected to the one-way rotation assembly; the one-way rotation assembly is used to control the rotation and stop of the winch drum.

[0005] Furthermore, the one-way rotating component includes a one-way rotating first part and a one-way rotating second part, the inner cavity of the one-way rotating first part is fixedly connected to the deceleration center shaft and the motor rotating shaft; the one-way rotating first part is arranged in the inner cavity of the one-way rotating second part, and a one-way bearing is arranged between the one-way rotating first part and the one-way rotating second part, and the one-way rotating first part can only rotate in one direction in the inner cavity of the one-way rotating second part.

[0006] Furthermore, the one-way rotating assembly includes a one-way rotating piston portion and a plurality of first one-way brake pads, one end of the one-way rotating piston portion abuts against the one-way piston spring, and one end of the one-way rotating piston portion is used to abut against the first one-way brake pad; the other end of the one-way piston spring abuts against the winch fixed shell, and the one-way piston spring is in a compressed state; the winch fixed shell is provided with a plurality of second one-way brake pads, and the first one-way brake pads and the second one-way brake pads are arranged in an staggered manner.

[0007] Furthermore, a hydraulic cavity is provided between the fixed shell of the winch and the one-way rotating piston portion, and a hydraulic oil channel is provided inside the fixed shell of the winch. The hydraulic oil channel is used for external hydraulic components to input and extract liquid into and out of the hydraulic cavity.

[0008] Furthermore, a central shaft sun gear is provided at the other end of the deceleration central shaft, which is engaged with a first-stage planetary reduction gear. A gear ring is provided on the inner side of the winch drum, which is engaged with the gear ring of the winch drum.

[0009] Furthermore, the inner side of the hoist drum is engaged with the secondary planetary reduction gear.

[0010] Furthermore, the secondary planetary reduction gear is engaged with the secondary planetary reduction sun gear, the secondary planetary reduction sun gear is engaged with the tertiary planetary reduction gear, and the tertiary planetary reduction gear is engaged with the inner side of the winch drum.

[0011] Furthermore, the reduction assembly includes a primary planetary carrier, a secondary planetary carrier and a tertiary planetary carrier, and the primary planetary carrier, the secondary planetary carrier and the tertiary planetary carrier are rotatably connected to the fixed housing of the winch.

[0012] Furthermore, a steel rope limiting cylinder is provided on the fixed shell of the winch, and the steel rope limiting cylinder is used to limit the steel rope wound on the winch drum.

[0013] Furthermore, a steel rope through-hole is provided on the fixed shell of the winch. The steel rope through-hole is arranged obliquely and is used for the steel wire rope wound on the winch drum to pass through.

[0014] The beneficial effect of a drilling winch provided by the present invention is that: due to the provision of a winch drum, a winch fixed shell, a reduction assembly, a one-way rotation assembly and a drive motor. The winch drum is rotationally connected to the winch fixed shell, and the reduction assembly and the one-way rotation assembly are arranged in the inner cavity of the winch drum. The one-way rotation assembly is used to control the rotation and stop of the winch when the winch drum releases the wire rope. After the outer shell of the winch drum is wound around the steel wire of the drilling rod, the drive motor drives the one-way rotation assembly inside the winch drum to rotate, and then drives the reduction assembly and the winch drum to rotate to wind the steel wire and pull up the drilling rod. When the drilling rod is lowered, only the one-way rotation assembly can rotate and the motor does not need to drive the reduction center shaft to rotate. This solves the current problems of the overall large size of the winch and the reducer and the reducer being easily affected by the outside world, and it solves the problem that active rotation is not required during the lowering of the drilling rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a side view schematic diagram of a drilling winch;

[0016] Figure 2 This is a cross-sectional diagram of a drilling winch. DETAILED DESCRIPTION

[0017] In order to better understand the purpose, structure and function of the present invention, Figures 1 to 2 , a drilling winch of the present invention is further described in detail.

[0018] like Figures 1 to 2 As shown, an embodiment of the present invention provides a winch for drilling, comprising a winch drum 100, a winch fixed shell 200, a reduction assembly, a one-way rotation assembly, and a drive motor 500. The winch drum 100 is rotationally connected to the winch fixed shell 200, for example, by a bearing. The reduction assembly and the one-way rotation assembly are disposed in the inner cavity of the winch drum 100. The drive motor 500 comprises a motor rotating shaft 510, one end of which is fixedly connected to the one-way rotation assembly. The reduction assembly comprises a reduction center shaft 310, one end of which is fixedly connected to the one-way rotation assembly. The one-way rotation assembly is used to control the rotation and stop of the winch drum 100.

[0019] The one-way rotating component includes a one-way rotating first part 410 and a one-way rotating second part 420. The inner cavity of the one-way rotating first part 410 is fixedly connected to the deceleration center shaft 310 and the motor rotating shaft 510; the one-way rotating first part 410 is arranged in the inner cavity of the one-way rotating second part 420, and a one-way bearing 460 is arranged between the one-way rotating first part 410 and the one-way rotating second part 420. The one-way rotating first part 410 can only rotate in one direction in the inner cavity of the one-way rotating second part 420.

[0020] In the present invention, the one-way rotation assembly also includes a one-way rotation piston portion 430 and a plurality of first one-way brake pads 450. One end of the one-way rotation piston portion 430 abuts against the one-way piston spring 440, and one end of the one-way rotation piston portion 430 is used to abut against the first one-way brake pad 450; the other end of the one-way piston spring 440 abuts against the winch fixed shell 200, and the one-way piston spring 440 is in a compressed state; the winch fixed shell 200 is provided with a plurality of second one-way brake pads 220, and the first one-way brake pads 450 and the second one-way brake pads 220 are arranged in an staggered manner.

[0021] A hydraulic chamber 600 is provided between the hoist fixed housing 200 and the one-way rotating piston portion 430 . A hydraulic oil channel 210 is provided inside the hoist fixed housing 200 . The hydraulic oil channel 210 is used for the external hydraulic assembly 700 to input and extract liquid into and out of the hydraulic chamber 600 .

[0022] When in use, the hoist drum 100 is wound with a rope for suspending the drilling rod, and the rope is usually a wire rope. In the present invention, the direction in which the hoist drum 100 rotates when the drilling rod is lifted is defined as forward rotation, and the direction in which the hoist drum 100 rotates when the drilling rod is lowered is defined as reverse rotation.

[0023] When the winch drum 100 rotates forward, the driving motor 500 continuously outputs power through the motor rotating shaft 510. The rotation of the motor rotating shaft 510 drives the unidirectional rotating first part 410 to rotate, and the rotation of the unidirectional rotating first part 410 drives the rotation of the deceleration center shaft 310. During this process, the rotation speed of the motor rotating shaft 510 is the same as the rotation speed of the deceleration center shaft 310. The motor rotating shaft 510 transmits force to the deceleration center shaft 310, and the rotation speed of the deceleration center shaft 310 is reduced by multiple stages through the deceleration component. Finally, the torque is increased at the same speed to transmit low speed and high torque to the winch drum 100, thereby achieving the purpose of winding the wire rope to lift the drilling rod.

[0024] During forward rotation of the hoist drum 100, to prevent the drill rod from falling due to motor damage, the external hydraulic assembly 700 does not inject hydraulic oil into the hydraulic oil channel 210. This allows the one-way piston spring 440 to push the one-way rotating piston portion 430, tightly clamping the first one-way brake pad 450 and the second one-way brake pad 220 together. Because a one-way bearing 460 is positioned between the one-way rotating second portion 420 and the one-way rotating first portion 410, if the hoist drum 100 reverses, the hoist drum 100 will cause the reduction assembly's reduction center shaft 310, which is fixedly connected to the one-way rotating first portion 410, to reverse. The one-way rotating second portion 420, through the first one-way brake pad 450 fixed thereto, is clamped to the second one-way brake pad 220. Since the second one-way brake pad 220 is fixed to the hoist fixed housing 200, the hoist drum 100 will not reverse, preventing the drill rod from suddenly falling.

[0025] If the winch drum 100 needs to continuously maintain the height of the drilling rod unchanged, the external hydraulic component 700 also does not need to inject hydraulic oil into the hydraulic oil channel 210, so that the second one-way brake pad 220 and the first one-way brake pad 450 are continuously clamped. During this process, the motor rotating shaft 510 can be free from force, which also reduces the burden on the drive motor 500, reduces the energy consumption of the drive motor, and extends the service life of the drive motor.

[0026] When the hoist drum 100 is required to lower the drill rod, the external hydraulic assembly 700 injects hydraulic oil into the hydraulic oil passage 210. This oil, in the hydraulic chamber 600, pushes the one-way rotating piston portion 430 toward the one-way piston spring 440. During this process, the clamping force between the first one-way brake pad 450 and the second one-way brake pad 220 gradually decreases, allowing rotation between the one-way rotating second portion 420 and the hoist fixed housing 200. The weight of the drill rod drives the hoist drum 100 in a reverse direction via the wire rope. This reverse direction is transmitted to the one-way rotating first portion 410 via the reduction assembly. Due to the one-way rotation of the one-way bearing 460, the one-way rotating second portion 420 tends to reverse, and rotation between the one-way rotating second portion 420 and the hoist fixed housing 200 is possible, allowing the one-way rotating second portion 420 to reverse, thereby enabling the hoist drum 100 to reverse and continue to lower the drill rod. During the reversal of the winch drum 100, the rotational force is provided by the drill rod. The winch drum 100 is in passive rotation, and the rotation of the reduction assembly and the one-way rotation assembly are both provided by the drill rod. The motor shaft 510 of the drive motor 500 is in a passive idling state. The drive motor 500 does not need to work, thereby reducing the energy consumption of the drive motor and extending the service life of the drive motor. Some hydraulic drive motors will not cause damage to the motor when idling.

[0027] In the present invention, when the winch drum 100 reverses, the external hydraulic component 700 can control the oil inlet amount to the hydraulic oil channel 210 to control the pressure of the hydraulic oil in the hydraulic chamber 600 on the one-way rotating piston part 430, thereby controlling the degree of clamping between the second one-way brake pad 220 and the first one-way brake pad 450, thereby realizing the adjustment of the rotation speed of the winch drum 100 and the descent speed of the drilling rod, and avoiding damage to the drilling rod due to the drilling rod descending too quickly.

[0028] It can be understood that the other end of the reduction center shaft 310 is provided with a center shaft sun gear 311, which is engaged with the primary planetary reduction gear 320. The inner side of the hoist drum 100 is provided with a ring gear 110, and the primary planetary reduction gear 320 is engaged with the ring gear 110 of the hoist drum 100. The inner side of the hoist drum 100 is engaged with the secondary planetary reduction gear 330.

[0029] The secondary planetary reduction gear 330 meshes with the secondary planetary reduction sun gear 340, which in turn meshes with the tertiary planetary reduction gear 350. The tertiary planetary reduction gear 350 is meshed with the inside of the hoist drum 100. The reduction assembly includes a primary planetary carrier, a secondary planetary carrier, and a tertiary planetary carrier, which are rotatably connected to the hoist fixed housing 200. This design improves the meshing stability between the reduction assembly and the ring gear 110.

[0030] The reduction assembly is provided with three stages of reduction, and planetary gears are used in the three stages of reduction. The first-stage planetary reduction gear 320, the second-stage planetary reduction gear 330 and the third-stage planetary reduction gear 350 are all engaged with the ring gear 110 on the inner wall of the winch drum 100. The three-stage reduction is used to reduce the speed of the motor rotating shaft 510 and increase the torque. For example, the speed ratio of the drum speed to the motor rotating shaft 510 can be 1:70.

[0031] In some embodiments, a wire rope limiting cylinder 800 is provided on the hoist fixed housing 200, and the wire rope limiting cylinder 800 is used to limit the position of the wire rope wound on the hoist drum 100, thereby preventing the wire rope from suddenly bouncing off the hoist drum 100 and causing danger to surrounding personnel and equipment.

[0032] The hoist fixed housing 200 is also provided with a steel rope through-hole 900, which is arranged at an angle and is used for passing the steel wire rope wound on the hoist drum 100. This design can guide the steel wire rope to be wound in the correct direction, avoiding the possibility of the steel wire rope being wound in the wrong direction and causing subsequent work to be unable to proceed normally.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A winch for drilling, characterized in that: The invention comprises a hoist drum (100), a hoist fixed shell (200), a deceleration assembly, a one-way rotation assembly and a driving motor (500); the hoist drum (100) is rotationally connected to the hoist fixed shell (200); the deceleration assembly and the one-way rotation assembly are arranged in the inner cavity of the hoist drum (100); the driving motor (500) comprises a motor rotating shaft (510); one end of the motor rotating shaft (510) is fixedly connected to the one-way rotation assembly; the deceleration assembly comprises a deceleration center shaft (310); one end of the deceleration center shaft (310) is fixedly connected to the one-way rotation assembly; the one-way rotation assembly is used to control the rotation and stop of the hoist drum (100).

2. The drilling winch according to claim 1, characterized in that: The one-way rotating component includes a one-way rotating first part (410) and a one-way rotating second part (420), wherein the inner cavity of the one-way rotating first part (410) is fixedly connected to the deceleration center shaft (310) and the motor rotating shaft (510); the one-way rotating first part (410) is arranged in the inner cavity of the one-way rotating second part (420), and a one-way bearing (460) is arranged between the one-way rotating first part (410) and the one-way rotating second part (420), and the one-way rotating first part (410) can only rotate in one direction in the inner cavity of the one-way rotating second part (420).

3. The drilling winch according to claim 2, characterized in that: The one-way rotation assembly includes a one-way rotation piston portion (430) and a plurality of first one-way brake pads (450), one end of the one-way rotation piston portion (430) abuts against the one-way piston spring (440), and one end of the one-way rotation piston portion (430) is used to abut against the first one-way brake pads (450); the other end of the one-way piston spring (440) abuts against the winch fixed shell (200), and the one-way piston spring (440) is in a compressed state; the winch fixed shell (200) is provided with a plurality of second one-way brake pads (220), and the first one-way brake pads (450) and the second one-way brake pads (220) are arranged in a staggered manner.

4. The drilling winch according to claim 3, characterized in that: A hydraulic chamber (600) is provided between the hoist fixed housing (200) and the one-way rotating piston portion (430), and a hydraulic oil channel (210) is provided inside the hoist fixed housing (200). The hydraulic oil channel (210) is used for an external hydraulic component (700) to input and extract liquid into and from the hydraulic chamber (600).

5. The drilling winch according to claim 1, characterized in that: A central shaft sun gear (311) is provided at the other end of the deceleration central shaft (310), and the central shaft sun gear (311) is engaged with a first-stage planetary reduction gear (320). A ring gear (110) is provided on the inner side of the hoist drum (100), and the first-stage planetary reduction gear (320) is engaged with the ring gear (110) of the hoist drum (100).

6. The drilling winch according to claim 5, characterized in that: The inner side of the hoist drum (100) is engaged with the secondary planetary reduction gear (330).

7. The drilling winch according to claim 6, characterized in that: The secondary planetary reduction gear (330) is engaged with the secondary planetary reduction sun gear (340), the secondary planetary reduction sun gear (340) is engaged with the tertiary planetary reduction gear (350), and the tertiary planetary reduction gear (350) is engaged with the inner side of the hoist drum (100).

8. The drilling winch according to claim 7, characterized in that: The reduction assembly comprises a primary planetary frame, a secondary planetary frame and a tertiary planetary frame, and the primary planetary frame, the secondary planetary frame and the tertiary planetary frame are rotatably connected to the hoist fixed housing (200).

9. The drilling winch according to claim 1, characterized in that: A steel rope limiting cylinder (800) is provided on the hoist fixed shell (200), and the steel rope limiting cylinder (800) is used to limit the steel rope wound on the hoist drum (100).

10. The drilling winch according to claim 1, characterized in that: The hoist fixed housing (200) is further provided with a steel rope through-hole (900), which is arranged obliquely. The steel rope through-hole (900) is used for the steel wire rope wound on the hoist drum (100) to pass through.

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