Multifunctional variable-frequency electric rope rewinding machine for petroleum drilling machine

Abstract

The invention belongs to the field of petroleum drilling machines, particularly relates to a multifunctional variable-frequency electric rope rewinding machine for a petroleum drilling machine, and aims to solve the problems that an existing brake cannot stop a rotating rope wheel timely and effectively or too quickly, and the brake is too soft or too hard. In order to solve the problem of poor rope winding caused by incapability of continuously tensioning a steel wire rope when the steel wire rope is wound on a drum of the well drilling winch due to incapability of following a well drilling winch under a large rope switching working condition, the following scheme is provided: the rope winding machine comprises a rack, a variable-frequency power system, a variable-frequency control system, a gear component assembly, a rope wheel assembly, a rope guide drum assembly and a disc brake assembly. According to the device, the purpose of winding and unwinding the drilling line can be achieved through the driving rope wheel, and the purpose of flexible braking is achieved by reasonably setting the braking time and logic of energy consumption braking and an electromagnetic brake; the variable-frequency control system ensures that the rope rewinding machine follows the drilling winch when the large rope working condition is switched, so that the steel wire rope is continuously tensioned when being wound on a drum of the drilling winch, and good rope winding of the drilling winch is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of oil drilling rigs, in particular to a multifunctional variable frequency electric rope reeling machine for oil drilling rigs. Background Art

[0002] In oil and gas drilling operations, the rope rewinder is mainly used to reel in and release drilling wire ropes and thread drilling wire ropes. According to the power, it can be divided into pneumatic rope rewinders, hydraulic rope rewinders, and electric rope rewinders. The existing rope rewinders have the following problems: 1. The brake of the rope rewinder is a mechanical friction brake, and there is a problem of "too soft" (i.e. insufficient braking force, slow braking) or "too hard" (i.e. braking too fast, fast locking). When the rope rewinder drives the rope wheel wrapped with wire rope to rotate, its rotational inertia is large, the brake is "too soft", the rope wheel fails to stop in time, and it is easy to cause safety accidents; the brake is "too hard", the rope wheel stops sharply, the mechanical impact is large, and it is easy to damage the equipment.

[0003] Authorization announcement No. CN 208532078 U discloses an electric rope rewinding machine, which uses an electromagnetic brake motor with "too strong" brakes. When the rope rewinding machine is stopped, the electromagnetic brake in the motor directly brakes and locks quickly. Under the huge rotational inertia of the rope wheel, the impact is huge, which can easily cause damage to the intermediate gears, motors, shafts and other equipment.

[0004] The authorization announcement number CN 205064632 U discloses a mechanical brake device for an electric rope rewinding machine, which uses a manual brake. Under the action of a handle and a connecting rod, the brake block and the reel are frictionally braked. This brake device still has the following defects when in use:

[0005] 1. In fact, due to the huge inertia of the drum, this brake cannot effectively stop the rotating sheave in time, and the brake is "too soft".

[0006] 2. In the working conditions of "changing the big rope" and "reversing the big rope", the drilling wire rope on the rope reversing machine needs to be released, and the wire rope is fixed on the large drilling winch drum after passing through the traveling hoisting system. Then the drilling winch "actively winds the rope" and the rope reversing machine "passively releases the rope". Since the rope reversing machine cannot follow the drilling winch and maintain a continuous and constant tension, the wire rope is sometimes loose and sometimes tight, making it impossible to effectively tighten the wire rope when winding it around the winch drum. As a result, when the drilling winch is wound in multiple layers during work, it is easy to produce a tangled rope phenomenon because the lower wire rope is not wound tightly;

[0007] 3. When the rope rewinding machine is reeling in the rope or pulling the drilling rope through the traveling hoist system, it may tip over due to excessive dragging, posing a safety hazard. Summary of the invention

[0008] The purpose of the present invention is to solve the shortcomings of the prior art that the brake cannot effectively stop the rotating rope wheel in time, the brake is "too soft", and the rope reel may tip over due to excessive drag when the rope is reeled in or the drilling rope is pulled through the traveling hoist system. A multifunctional variable frequency electric rope reel for oil drilling rigs is proposed.

[0009] In order to achieve the above object, the present invention adopts the following technical solutions:

[0010] A multifunctional variable frequency electric rope rewinding machine for oil drilling rigs includes a frame, a variable frequency power system, a variable frequency control system, a gear assembly, a rope wheel assembly, a rope drum assembly, and a disc brake assembly. The variable frequency power system includes an explosion-proof variable frequency brake motor and a reducer. The explosion-proof variable frequency brake motor is provided with an electromagnetic power-off brake and a cooling fan at the tail, which are installed on the input side of the reducer, and then the whole is fixed on the frame through the reducer; the variable frequency control system includes an explosion-proof control box, a frequency converter, a heater, a gear selection switch, an emergency stop switch, a constant torque setting instrument, a control circuit, a radiator, an explosion-proof brake resistor, and an explosion-proof inclinometer. The gear selection switch is used to switch between the two control modes of "normal" and "reversing the big rope". Reversing the big rope includes two working conditions of reversing the big rope or changing the big rope. The radiator is close to the rear of the explosion-proof control box. The explosion-proof inclinometer is installed on the frame. The remaining components are encapsulated in the explosion-proof control box. The variable frequency control system is electrically connected to the variable frequency power system. The variable frequency control system drives the variable frequency power system, and drives the rope pulley assembly or the rope drum assembly to rotate through the gear assembly assembly. The gear assembly includes a pinion, a large gear, a shift fork, a main shaft, a bearing seat 1, and a bearing seat 2. The pinion is installed on the output shaft of the reducer, the shift fork is installed on the strip hole of the large gear, the large gear is connected and fixed to the main shaft, and then fixed to the frame through the bearing seat 1 and the bearing seat 2; the rope pulley assembly includes a rope pulley, a rope pulley shaft, and a bushing. The rope pulley is fixed to the rope pulley shaft through the bushings on both sides. One side of the rope pulley shaft is installed on the frame, and the other side is installed on the gear assembly. The variable frequency power system drives the rope pulley to rotate through the gear assembly and the shift fork; the rope pulley assembly includes a rope pulley gear, a sliding nut, a bearing seat 3, a rope pulley, a screw, a bearing seat 4, and a handwheel, wherein the rope pulley is fixed to the frame through the bearing seat 3 and the bearing seat 4. By turning the handwheel, the screw and the sliding nut are driven to rotate, so that the rope pulley gear moves axially and engages or disengages with the large gear. The disc brake assembly includes a brake handle, a brake caliper, a brake disc, a booster oil pump, and a hydraulic pipeline, wherein the brake disc is mounted on the large main shaft, and the remaining components are fixed on the winch frame. The brake handle drives the booster oil pump to supply oil to the brake caliper, thereby driving the brake caliper to brake the main shaft.

[0011] The present invention can achieve the purpose of collecting and releasing the drilling rope by driving the rope wheel, and can pull the drilling rope to pass between the crown block and the traveling block by driving the rope guide drum, so that one machine has two uses. When it is necessary to collect or release the drilling rope, the rope guide drum is disengaged, and the position of the shift fork on the large gear on the strip hole is adjusted so that the shift fork is stuck in the hole or groove on the rope wheel. In this way, the control system controls the frequency converter, the driving motor, the speed reducer, the small gear, the large gear and the shift fork, so that the rope wheel can be driven to rotate, and the purpose of collecting and releasing the drilling rope is achieved. When it is necessary to "thread the big rope", retract the shift fork to make it disengage from the rope wheel, and by turning the handwheel of the rope reel assembly, the screw and sliding nut are driven to rotate, so that the rope gear moves axially and meshes with the large gear. In this way, the frequency converter, drive motor, reducer, small gear, large gear and rope gear are controlled by the frequency conversion control system to drive the rope reel to rotate, and the rope wire rope is wound around to pull the drilling rope to pass between the crown block and the traveling block, thereby achieving the purpose of threading the big rope.

[0012] Preferably, the present invention adopts an explosion-proof variable frequency brake motor, which realizes the stepless speed regulation function under the drive of the frequency converter of the control system. At the same time, the frequency converter and the variable frequency brake motor are combined to achieve the purpose of "energy consumption braking" deceleration and stopping. "Energy consumption braking" means that when the rope rewinder stops, the variable frequency brake motor automatically changes from the "motor" state to the "generator" state, outputs torque in the reverse direction, converts the mechanical energy of the rope wheel rotation into heat, and dissipates it into the environment through the brake resistor, so as to achieve the purpose of flexible braking. The frequency converter can reasonably set the time of energy consumption braking and the brake action time of the electromagnetic brake to avoid "too soft" or too hard braking. When the rope rewinder stops by "flexible" deceleration through energy-consuming braking, the brake installed on the rear side of the explosion-proof variable frequency brake motor will engage in time to reliably stop the rope rewinder mechanically. In case of emergency or when necessary, the emergency stop switch can be pressed to quickly stop the rope rewinder to ensure safety. The variable frequency control system ensures that the rope rewinder follows the drilling winch in both the rewinding and replacing of the large rope, so that the wire rope is continuously tensioned when it is wound around the drilling winch drum, ensuring that the drilling winch is well wound.

[0013] Preferably, the rope rewinding machine control system is provided with two control modes, namely "normal" and "reversing the big rope". In the "normal" mode, the rope rewinding machine can be controlled to reel in, enlarge the big rope or pull the big rope; in the "reversing the big rope" mode, the rope rewinding machine control system (frequency converter) enters the "speed following" and "constant torque output" modes. When the drilling winch "actively winds the rope", the rope rewinder "passively releases the rope", and the rope rewinder's rope releasing speed automatically follows the drilling winch's rope winding speed to avoid being too fast or too slow. At this time, the rope rewinder outputs a continuous and constant torque under the combined action of the drilling winch's drag and its own inverter, so that the drilling wire rope is always in a suitable pre-tightened state during the entire "rope winding" process (according to the wire rope use specifications, the pre-tightening force during wire rope winding should be 2% of the maximum breaking tension of the wire rope. Under this working condition, the output torque of the inverter can be set in advance through the constant torque setting instrument), ensuring that the drilling rope is well wound around the drilling winch drum, avoiding the rope disorder phenomenon caused by the initial loose rope winding during the later use of the drilling winch.

[0014] Preferably, the explosion-proof inclinometer is installed on the rope rewinding machine frame and is electrically connected to the control circuit of the frequency conversion control system. When the rope rewinding machine tilts and exceeds the safe angle due to external forces such as the drilling rig rope and the traction rope, the explosion-proof inclinometer will immediately output an electrical signal to the control system, and the control system will control the rope rewinding machine frequency converter and motor to stop in time to prevent the occurrence of dumping safety accidents.

[0015] Preferably, a brake disc and a disc brake assembly are provided on the main shaft of the gear component assembly, so that in special circumstances when "energy-consuming braking", electromagnetic brakes or intermediate transmission parts fail, emergency braking can be achieved, the rope wheel can be stopped in time, and safety can be ensured.

[0016] Beneficial effects: The present invention can achieve the purpose of retracting and releasing the drilling rope by driving the rope wheel, and can pull the drilling rope to pass between the crown block and the traveling block by driving the rope guide drum. The one machine has two uses and is highly efficient.

[0017] The present invention adopts frequency conversion control technology and reasonably sets the braking time and logic of "energy-consuming braking" and "electromagnetic brake" to achieve the purpose of "flexible braking" and avoid braking being "too soft" or "too hard".

[0018] The present invention switches to the "reversing rope" mode, and the frequency conversion control system (frequency converter) enters the "speed following" and "constant torque output" modes, so that the drilling wire rope is always in a suitable pre-tightened state during the entire "rope winding" process, ensuring that the drilling rope is well wound around the drilling winch drum, avoiding the rope tangling phenomenon caused by the initial loose rope winding during the later use of the drilling winch.

[0019] The invention provides an explosion-proof inclinometer to achieve the function of stopping the rope reversing machine in time when the rope reversing machine tilts under the action of external force, thereby preventing the occurrence of dumping safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the main structure of a multifunctional variable frequency electric rope rewinding machine for oil drilling rigs proposed by the present invention;

[0021] Figure 2 This is a top view of the structure of a multifunctional variable frequency electric rope rewinding machine for oil drilling rigs proposed by the present invention;

[0022] Figure 3 A schematic diagram of the side structure of a multifunctional variable frequency electric rope rewinding machine for oil drilling rigs proposed by the present invention;

[0023] Figure 4 This is a schematic diagram of the main structure of the multifunctional variable frequency electric rope rewinding machine for oil drilling rigs proposed by the present invention;

[0024] Figure 5 A three-dimensional structural schematic diagram of a rope reel assembly in a multifunctional variable frequency electric rope rewinding machine for oil drilling rigs proposed by the present invention;

[0025] Figure 6 A three-dimensional structural schematic diagram of an electric control system in a multifunctional variable frequency electric rope rewinding machine for oil drilling rigs proposed by the present invention;

[0026] Figure 7 The present invention provides a schematic diagram of the working state of switching the large rope in a multifunctional variable frequency electric rope rewinding machine for oil drilling rigs.

[0027] In the figure: 1. Frame; 2. Power system; 201. Explosion-proof variable frequency brake motor; 202. Speed ​​reducer; 203. Brake; 204. Cooling fan; 3. Variable frequency control system; 301. Explosion-proof control box; 302. Frequency converter; 303. Heater; 304. Gear selection switch; 305. Emergency stop switch; 306. Constant torque setting instrument; 307. Control circuit; 308. Radiator; 309. Explosion-proof brake resistor; 310. Explosion-proof inclinometer; 4. Gear assembly; 401. Small gear; 402. Large gear Wheel; 403, fork; 404, bearing seat one; 405, main shaft; 406, bearing seat two; 5, rope pulley assembly; 501, rope pulley; 502, rope pulley shaft; 503, bushing; 6, rope guide drum assembly; 601, rope guide gear; 602, sliding nut; 603, bearing seat three; 604, rope guide drum; 605, screw; 606, bearing seat four; 607, handwheel; 7, disc brake assembly; 701, brake handle; 702, brake caliper; 703, brake disc; 704, booster oil pump; 705, hydraulic pipeline. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] Example 1; Reference Figure 1-7 A multifunctional variable frequency electric rope reel for oil drilling rigs includes a frame 1, a variable frequency power system 2, a variable frequency control system 3, a gear assembly 4, a rope pulley assembly 5, a rope drum assembly 6, and a disc brake assembly 7. The variable frequency power system 2 includes an explosion-proof variable frequency brake motor 201 and a reducer 202. The tail of the explosion-proof variable frequency brake motor 201 is provided with an electromagnetic power-off brake 203 and a cooling fan 204, which are installed on the input side of the reducer 202, and then the whole is fixed on the frame 1 through the reducer 202; the variable frequency control system 3 includes an explosion-proof control box 301, a frequency converter 302, a heater 303, a gear selection switch 304, an emergency stop switch 305, a constant torque setting instrument 306, a control circuit 307, a radiator 308, an explosion-proof brake resistor 309, and an explosion-proof inclinometer 310. The radiator 308 is close to the rear of the explosion-proof control box 301, and the gear selection switch 304 is installed on the input side of the reducer 202. The gear selection switch 305 is installed on the input side of the reducer 202 ... The position selection switch 304 is used to switch between the two control modes of "normal" and "reversing the main rope". Reversing the main rope includes two working conditions: reversing the main rope or changing the main rope. The explosion-proof inclinometer 310 is installed on the frame 1, and the remaining components are encapsulated in the explosion-proof control box 301. The frequency conversion control system 3 is electrically connected to the frequency conversion power system 2. The frequency conversion control system 3 drives the frequency conversion power system 2 to drive the rope pulley assembly 5 or the rope drum assembly 6 to rotate through the gear component assembly 4. The frequency conversion control system 3 ensures that the rope reversing machine follows the drilling winch in the working conditions of reversing the main rope or changing the main rope, so that the wire rope is continuously tensioned when it is wound around the drilling winch drum, ensuring that the drilling winch is well wound.

[0030] The gear assembly 4 includes a pinion 401, a large gear 402, a shift fork 403, a bearing seat 1 404, a main shaft 405, and a bearing seat 2 406. The pinion 401 is mounted on the output shaft of the reducer 202, the shift fork 403 is mounted on the bar hole of the large gear 402, the large gear 402 is connected and fixed to the main shaft 405, and then fixed to the frame 1 through the bearing seat 1 404 and the bearing seat 2 406; the sheave assembly 5 includes a sheave 501, a sheave shaft 502, and a sleeve 503. The sheave 501 is fixed to the sheave shaft through the sleeves 503 on both sides. 502, one side of the rope pulley shaft 502 is mounted on the frame 1, and the other side is mounted on the gear assembly 4; the rope drum assembly 6 includes a rope gear 601, a sliding nut 602, a bearing seat three 603, a rope drum 604, a screw 605, a bearing seat four 606, and a handwheel 607, wherein the rope drum 604 is fixed to the frame 1 through the bearing seat three 603 and the bearing seat four 606, and by turning the handwheel 607, the screw 605 and the sliding nut 602 are driven to rotate, so that the rope gear 601 moves axially and engages or disengages with the large gear 402. The disc brake assembly 7 includes a brake handle 701, a brake caliper 702, a brake disc 703, an afterburner oil pump 704, and a hydraulic pipeline 705, wherein the brake disc 703 is mounted on the 405 main shaft, and the remaining components are fixed on the winch frame 1;

[0031] The present invention can achieve the purpose of collecting and releasing the drilling rope by driving the rope pulley assembly 5, and can pull the drilling rope to pass between the crown block and the traveling block by driving the rope guide drum assembly 6, so that one machine can be used for two purposes. When it is necessary to collect or release the drilling rope, the rope guide drum assembly 6 is disengaged, and the position of the fork 403 on the large gear 402 on the bar hole is adjusted so that the fork 403 is stuck in the hole or groove on the rope pulley 501. In this way, the frequency converter 302, the driving motor, the reducer 202, the small gear 401, the large gear 402 and the fork 403 are controlled by the frequency conversion control system 3, so that the rope pulley assembly 5 can be driven to rotate, so as to achieve the purpose of collecting and releasing the drilling rope. When it is necessary to "thread the big rope", the shift fork 403 is retracted to make the shift fork 403 disengage from the rope wheel 501, and the hand wheel 607 of the rope pulling drum assembly 6 is turned to drive the screw rod 605 and the sliding nut 602 to rotate, so that the rope pulling gear 601 moves axially and meshes with the large gear 402. In this way, the frequency converter 302, the drive motor, the reducer 202, the small gear 401, the large gear 402 and the rope pulling gear 601 are controlled by the frequency conversion control system 3, so that the rope pulling drum 604 can be driven to rotate, and the rope pulling wire rope is wound around to pull the drilling big rope to pass between the crown block and the traveling block, so as to achieve the purpose of threading the big rope.

[0032] The present invention adopts an explosion-proof variable frequency brake motor 201, and realizes a stepless speed regulation function under the drive of the frequency converter 302 of the frequency conversion control system 3. At the same time, the frequency converter 302 and the explosion-proof variable frequency brake motor 201 can be combined to achieve the purpose of "energy consumption braking" deceleration and stopping. "Energy consumption braking" means that when the rope rewinding machine stops, the explosion-proof variable frequency brake motor 201 automatically changes from the "motor" state to the "generator" state, outputs torque in the reverse direction, and converts the mechanical energy of the rope wheel shaft 502 into heat, which is dissipated to the environment through the explosion-proof brake resistor 309, so as to achieve the purpose of flexible braking. The time of energy consumption braking and the brake action time of the electromagnetic brake 203 can be reasonably set by the frequency converter 302 to avoid "too soft" or too hard braking. When the rope rewinding machine stops by "flexible" deceleration of energy consumption braking, the brake 203 installed on the rear side of the explosion-proof variable frequency brake motor 201 is braked in time, and the rope rewinding machine is stopped mechanically reliably. In case of emergency or when necessary, the emergency stop switch 305 can be pressed to quickly brake and stop the rope rewinding machine to ensure safety.

[0033] The rope rewinding machine frequency conversion control system 3 is set with two control modes. In the "normal" mode, the rope rewinding machine can be controlled to collect, enlarge or pull the large rope; in the "reversing large rope" mode, the frequency converter 302 of the rope rewinding machine control system enters the "speed following" and "constant torque output" modes. When the drilling winch "actively winds the rope", the rope reel "passively releases the rope", and the rope reeling machine's rope releasing speed automatically follows the drilling winch's rope winding speed to avoid being too fast or too slow. At this time, the rope reeling machine outputs a continuous and constant torque under the combined action of the drilling winch's drag and its own frequency converter 302, so that the drilling wire rope is always in a suitable pre-tightened state during the entire "rope winding" process (according to the wire rope use specification, the pre-tightening force during wire rope winding is preferably 2% of the maximum breaking tension of the wire rope. Under this working condition, the output torque of the frequency converter 302 can be set in advance through the constant torque setting instrument 306), ensuring that the drilling rope is well wound around the drilling winch drum, avoiding the rope tangling phenomenon caused by the initial loose rope winding during the later use of the drilling winch.

[0034] The explosion-proof inclinometer 310 is installed on the rope rewinding machine frame and is electrically connected to the control circuit 307 of the frequency conversion control system 3. When the rope rewinding machine tilts and exceeds the safe angle under the action of external forces such as the drilling rig rope and the traction rope, the explosion-proof inclinometer 310 will immediately output an electrical signal to the frequency conversion control system 3. The frequency conversion control system 3 controls the rope rewinding machine inverter 302 and the motor to stop in time to prevent the occurrence of dumping safety accidents.

[0035] A brake disc 703 and a disc brake assembly 7 are arranged on the main shaft 405 of the gear component assembly 4. In special circumstances when the "energy-consuming braking", electromagnetic brake 203 or intermediate transmission parts fail, emergency braking can be implemented to stop the rope wheel 501 in time to ensure safety.

[0036] The explosion-proof control box 301 of the frequency conversion control system 3 is provided with a heater 303 and a radiator 308, which can perform heating and timely heat dissipation as needed, so that the frequency converter 302 is in a suitable temperature range, thereby ensuring the smooth operation of the machine.

[0037] However, as is well known to those skilled in the art, the working principles and wiring methods of the heater 303, radiator 308, inverter 302, heater 303, gear selection switch 304, emergency stop switch 305, constant torque setting instrument 306, and control circuit 307 are commonplace, and are all conventional means or common knowledge, and will not be elaborated here. Those skilled in the art can make any selections according to their needs or convenience.

[0038] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A multifunctional variable frequency electric rope reel for oil drilling rigs, comprising a frame (1), a variable frequency power system (2), a variable frequency control system (3), a gear assembly (4), a rope wheel assembly (5), a rope drum assembly (6) and a disc brake assembly (7), characterized in that: The variable frequency power system (2) comprises an explosion-proof variable frequency brake motor (201) and a reducer (202); the explosion-proof variable frequency brake motor (201) is provided with an electromagnetic power-off brake (203) and a cooling fan (204) at the rear end thereof and is installed on the input side of the reducer (202); the whole is fixed to the frame (1) through the reducer (202); The frequency conversion control system (3) comprises an explosion-proof control box (301), a frequency converter (302), a heater (303), a gear selection switch (304), an emergency stop switch (305), a constant torque setting instrument (306), a control circuit (307), a radiator (308), an explosion-proof braking resistor (309) and an explosion-proof inclinometer (310), wherein the radiator (308) is closely attached to the rear of the explosion-proof control box (301), the explosion-proof inclinometer (310) is mounted on the frame (1), and the frequency converter (302), the heater (303), the gear selection switch ( 304), an emergency stop switch (305), a constant torque setting instrument (306), a control circuit (307), and an explosion-proof brake resistor (309) are encapsulated in an explosion-proof control box (301); the frequency conversion control system (3) is electrically connected to the frequency conversion power system (2) and is used to drive the frequency conversion power system (2) to drive the rope wheel assembly (5) and the rope drum assembly (6) to rotate through the gear assembly assembly (4); the frequency conversion control system (3) ensures that the rope rewinding machine follows the drilling winch so that the wire rope is continuously tensioned when it is wound around the drilling winch drum, thereby ensuring that the drilling winch is well wound.

2. The multifunctional variable frequency electric rope rewinding machine for oil drilling rigs according to claim 1 is characterized in that: The gear assembly (4) comprises a pinion (401), a large gear (402), a shift fork (403), a bearing seat 1 (404), a main shaft (405) and a bearing seat 2 (406), wherein the pinion (401) is mounted on the output shaft of the reducer (202), the shift fork (403) is mounted on the bar-shaped hole of the large gear (402), the large gear (402) is connected and fixed to the main shaft (405), and is fixed to the frame (1) through the bearing seat 1 (404) and the bearing seat 2 (406).

3. The multifunctional variable frequency electric rope rewinding machine for oil drilling rigs according to claim 1 is characterized in that: The rope pulley assembly (5) comprises a rope pulley (501), a rope pulley shaft (502) and a shaft sleeve (503); the rope pulley (501) is fixed on the rope pulley shaft (502) via shaft sleeves (503) on both sides; one end of the rope pulley shaft (502) is mounted on the frame (1), and the other end is mounted on the gear assembly (4).

4. The multifunctional variable frequency electric rope rewinding machine for oil drilling rigs according to claim 1 is characterized in that: The rope guide drum assembly (6) comprises a rope guide gear (601), a sliding nut (602), a bearing seat three (603), a rope guide drum (604), a screw rod (605), a bearing seat four (606) and a hand wheel (607), wherein the rope guide drum (604) is fixed to the frame (1) via the bearing seat three (603) and the bearing seat four (606), the sliding nut (602) slides through one end of the rope guide drum (604), and the rope guide gear (601) is fixedly sleeved on the The outer wall of the sliding nut (602), the screw rod (605) rotates to penetrate the rope pulling drum (604) and extends into the interior of the sliding nut (602) through a thread, the hand wheel (607) is fixedly connected to one end of the screw rod (605), and the rope pulling gear (601) is used in conjunction with the large gear (402). By rotating the hand wheel (607), the screw rod (605) and the sliding nut (602) are driven to rotate, so that the rope pulling gear (601) moves axially and engages or disengages with the large gear (402).

5. The multifunctional variable frequency electric rope rewinding machine for oil drilling rigs according to claim 1 is characterized in that: The disc brake assembly (7) comprises a brake handle (701), a brake caliper (702), a brake disc (703), an afterburner oil pump (704) and a hydraulic pipeline (705), wherein The brake disc (703) is sleeved on the main shaft (405), and the brake caliper (702), the brake disc (703), the booster oil pump (704) and the hydraulic pipeline (705) are all fixed on the frame (1). The booster oil pump (704) is driven by the brake handle (701) to supply oil to the brake caliper (702), thereby driving the brake caliper (702) to brake the main shaft (405).

Images