WO2024060016A1

WO2024060016A1 - Motor direct drive drawworks

Info

Publication number: WO2024060016A1
Application number: PCT/CN2022/119938
Authority: WO
Inventors: 朱建建; 孙士森; 李键; 赵志成; 迟世伟; 王丰良; 马骁; 杨廷
Original assignee: 天津渤海杰瑞石油装备有限公司; 烟台杰瑞石油装备技术有限公司
Priority date: 2022-09-20
Filing date: 2022-09-20
Publication date: 2024-03-28
Also published as: CN116281703A

Abstract

The present application relates to the technical field of workover rig transmission devices, and specifically discloses a motor direct drive drawworks. The motor direct drive drawworks comprises a drawworks frame, a roller, a disc brake device and a variable-frequency motor; the roller is rotatably arranged on the drawworks frame; the disc brake device is connected to one end surface of the roller, and the disc brake device is arranged on the drawworks frame; the variable-frequency motor is connected to the other end surface of the roller, the variable-frequency motor is arranged on the drawworks frame, and an output shaft of the variable-frequency motor and the axis of the roller are coaxially arranged. The variable-frequency motor is used as a power source, thereby effectively avoiding the problems of serious noise and waste pollution; moreover, the output shaft of the variable-frequency motor and the axis of the roller are coaxially arranged, such that the transmission mechanism is simplified, lossless torque transmission can be implemented, and the transmission efficiency is improved.

Description

Motor direct drive winch

Technical field

This application generally relates to the technical field of workover rig transmission devices, and specifically, discloses a motor direct-drive winch.

Background technique

For vehicle drilling rigs in the oil or natural gas extraction industry, the winch is one of its essential transmission components. The engine or motor usually transmits power to the winch, and the winch drives the traveling system to lift and lower, thereby completing the pipe string and other Lifting and lowering of work tools.

At present, most winches use diesel engines as the power source, and the power is transmitted to the winch through transmission components such as gearboxes, drive shafts, parallel boxes, corner boxes, and chain boxes. However, this type of workover rig produces serious noise and exhaust gas pollution. , Diesel engine maintenance workload is heavy, maintenance and repair costs are high, and work efficiency is low.

Contents of the invention

The main purpose of this application is to provide a motor direct-driven winch, which solves the problems of serious noise and exhaust gas pollution in the winch.

In order to achieve the above-mentioned object of the invention, this application adopts the following technical solutions:

This application provides a motor direct-drive winch, including:

winch frame;

The drum is rotatably installed on the winch frame;

A disc brake device is connected to one end surface of the drum, and the disc brake device is provided on the winch frame; and

A variable frequency motor is connected to the other end surface of the drum, the variable frequency motor is arranged on the winch frame, and the output shaft of the variable frequency motor is coaxially arranged with the axis of the drum.

In an optional solution of the present application, the drum includes a shaft body and a cylinder sleeved on the peripheral side of the shaft body. The shaft body is rotatably installed on the winch frame. One end of the shaft body It is set in the inner shaft hole of the rotor of the frequency conversion motor, and the shaft body and the frequency conversion motor are connected through a tapered clamping coupling.

In an optional solution of the present application, the disc brake device includes a brake disc, a normally closed safety gear and a normally open safety gear arranged on the winch frame. The disc brake device also includes a brake disc for pushing the brake The first braking member of the normally closed safety gear and the second braking member used to push and brake the normally open safety gear.

In an optional solution of the present application, an emergency power device is also provided on the winch frame. The emergency power device includes: a driving member and a first transmission member connected to the driving member. A second transmission member drivingly connected to the first transmission member is fixed at one end.

In an optional solution of the present application, the first transmission member is a first gear, the driving member is used to drive the rotation of the gear, and the second transmission member is meshed with the first gear. a second gear, and the number of teeth of the second gear is greater than the number of teeth of the first gear.

In an optional scheme of the present application, a first encoder is installed at the input end of the variable frequency motor, and a second encoder is installed at the output end of the drum. The first encoder is used to obtain the number of rotations of the variable frequency motor, and the second encoder is used to obtain the number of rotations of the drum to monitor the connection reliability of the conical clamping coupling; a controller electrically connected to the first encoder, the second encoder, the disc brake device and the variable frequency motor is also provided on the winch frame.

In an optional solution of the present application, the winch frame is provided with a temperature sensor for monitoring the temperature of the variable frequency motor, and a variable frequency fan is installed next to the variable frequency motor. The temperature sensor and the variable frequency fan are both electrically connected to the controller.

In an optional solution of the present application, the winch frame is also provided with a junction box, the controller is arranged in the junction box, and the frequency conversion motor, the temperature sensor, the frequency conversion fan, The wires of the first encoder and the second encoder are arranged in the junction box through integrated wiring.

In an optional solution of the present application, the winch frame includes a bottom skid, two vertical stands are arranged at intervals on the bottom skid, and the drum is rotated and arranged between the two vertical stands; the bottom skid The bottom of the chassis is detachably connected to the chassis auxiliary beam.

In an optional solution of the present application, a guide rope frame is provided on the opposite side of the two stands. The guide rope frame is located above the drum, and a guide rope is rotated on the guide rope frame. Roller.

According to an embodiment of the present application, a motor direct-driven winch is provided. The motor direct-driven winch includes a winch frame; a drum that is rotated on the winch frame; a disc brake device that is connected to one end surface of the drum, and The disc brake device is arranged on the winch frame; and a variable frequency motor is connected to the other end face of the drum, the variable frequency motor is arranged on the winch frame, and the output shaft of the variable frequency motor is connected to the The axis of the drum is coaxially arranged. Using a variable frequency motor as the power source effectively avoids the problems of serious noise and waste pollution. At the same time, by setting the output shaft of the variable frequency motor coaxially with the axis of the drum, the transmission mechanism is simplified, which can achieve lossless transmission of torque and improve transmission. efficiency.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description serve to explain the principles of the invention.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those of ordinary skill in the art, It is said that other drawings can also be obtained based on these drawings without exerting creative work.

Figure 1 shows a front view of a motor direct-drive winch provided by an embodiment of the present application;

Figure 2 shows a left view of the motor direct-drive winch provided by the embodiment of the present application;

Figure 3 shows a right view of the motor direct-drive winch provided by the embodiment of the present application;

FIG4 shows a top view of a motor direct-driven winch provided in an embodiment of the present application;

Figure 5 shows a schematic diagram (1) of the shaft side of the motor direct-driven winch provided by the embodiment of the present application;

Figure 6 shows a schematic diagram (2) of the shaft side of the motor direct-driven winch provided by the embodiment of the present application.

Among them, the reference symbols are explained as follows:

1. Winch frame; 2. Drum; 3. Disc brake device; 31. Brake disc; 32. Normally closed safety gear; 33. Normally open safety gear; 4. Frequency conversion motor; 5. Tapered clamping coupling; 6. Emergency power device; 61. Driving part; 62. First transmission part; 63. Second transmission part; 7. First encoder; 8. Second encoder; 9. Frequency conversion fan; 10. Junction box; 11 , Bottom skid; 12. Stand; 13. Chassis vehicle auxiliary beam; 14. Guide rope frame; 15. Guide rope roller; 16. Over-roll anti-collision device.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments These are part of the embodiments of this application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

It should be noted that in the description and claims of this application and the above-mentioned drawings, relational terms such as “first” and “second” are only used to distinguish one entity or operation from another entity or operation. without necessarily requiring or implying any such actual relationship or specific order or sequence between these entities or operations. It is to be understood that the data so used are interchangeable under appropriate circumstances so that the embodiments of the application described herein, for example, can be practiced in sequences other than those illustrated or described herein.

Furthermore, the terms "include", "comprises" and "having" and any variations thereof or any other variation thereof are intended to cover a non-exclusive inclusion such that a process, method, article or apparatus that includes a list of elements includes not only those elements, but also other elements not expressly listed or elements inherent to the process, method, article or equipment. For example, a process, method, system, product, or apparatus that includes a series of steps or units need not be limited to those steps or units that are expressly listed, but may include steps or units that are not expressly listed or that are not specific to the process, method, product, or device. Other steps or units inherent to the equipment. Without further limitation, an element defined by the statement "comprises a..." does not exclude the presence of additional identical elements in a process, method, article, or apparatus that includes the stated element.

For the convenience of description, spatially relative terms can be used here, such as "on...", "on...", "on the upper surface of...", "above", etc., to describe what is shown in the figure. The spatial relationship between one device or feature and other devices or features. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a feature in the figure is turned upside down, then one feature described as "above" or "on top of" other features or features would then be oriented "below" or "below" the other features or features. under other devices or structures". Thus, the exemplary term "over" may include both orientations "above" and "below." The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Referring to Figures 1-4, the embodiment of the present application discloses a motor direct-driven winch, which includes a winch frame 1, a drum 2, a disc brake device 3 and a variable frequency motor 4, wherein the drum 2 is rotatably arranged on the winch frame. 1; the disc brake device 3 is connected to one end surface of the drum 2, and the disc brake device 3 is arranged on the winch frame 1. The variable frequency motor 4 is connected to the other end surface of the drum 2. The variable frequency motor 4 is arranged on the winch frame 1, and the output shaft of the variable frequency motor 4 is coaxially arranged with the axis of the drum 2.

In this application, the variable frequency motor 4 is used as the power source. Only by controlling the torque direction and speed direction of the variable frequency motor 4 through the frequency conversion control system, the rotation of the drum 2 can be realized to retract and release the wire rope, and drive the swimming system and pipe string. or the lifting, lowering and hovering of work tools, highlighting the convenience of winch control. The combination of the disc brake device 3 can also highlight the fast response speed of the winch brake; in addition, it can also effectively avoid the problems of serious noise and waste pollution, and at the same time By arranging the output shaft of the variable frequency motor 4 coaxially with the axis of the drum 2, the transmission mechanism is simplified, lossless transmission of torque can be achieved, and the transmission efficiency is improved.

Using the variable frequency motor 4 as the rotational driving force of the drum 2 can solve the problem of serious noise and waste pollution caused by the diesel generator as the power source of the transmission winch, and can also solve the problem of heavy maintenance workload and high maintenance cost of diesel vehicles. Problems such as low working efficiency, and using a diesel engine as the power source will also cause many problems such as long winch transmission system lines and low mechanical transmission efficiency; the belt brake has small braking torque and the brake drum is easy to rupture. However, using a variable frequency motor 4 as the power source Source can solve the above problems.

In addition, by arranging the output shaft of the variable frequency motor 4 coaxially with the axis of the drum 2, the variable frequency motor 4 is directly connected to the drum 2, making the overall transmission structure of the winch simple, with high transmission efficiency, small size, light weight, and small space occupation. .

Referring to Figures 1-4, the drum 2 includes a shaft body and a cylinder sleeved on the peripheral side of the shaft body. The shaft body is rotatably installed on the winch frame 1. One end of the shaft body is sleeved on the winch frame 1. In the inner shaft hole of the rotor of the variable frequency motor 4 , the shaft body and the variable frequency motor 4 are connected through a tapered clamping coupling 5 . The rotor of the variable frequency motor 4 has an inner shaft hole, and the shaft body of the drum 2 is a through shaft. One end of the shaft body is inserted into the inner shaft hole of the rotor. The rotor of the variable frequency motor 4 and the drum 2 share the same bearing and are connected through a tapered clamping. The shaft device 5 connection can realize automatic alignment of the inner shaft hole of the rotor and the shaft body to ensure coaxiality. Moreover, the tapered clamping coupling 5 is used for direct connection, which can achieve lossless transmission of torque. Compared with the existing winch, the complex transmission mechanism is removed, which can greatly shorten the time between the frequency conversion motor 4 and the drum 2. The connection length size can reduce the overall width of the winch, so that the winch will not exceed the width after being installed on the chassis, ensuring the stability and reliability of the subsequent installation of the winch.

In actual use, when the winch is being lowered, the gravitational potential energy of the hanging system drags the drum 2 to rotate through the wire rope, driving the output shaft of the variable frequency motor 4 to passively rotate. The variable frequency vector control system of the variable frequency motor 4 allows the variable frequency motor 4 to become a generator and output electric energy when the edge motor rotates passively, thereby realizing potential energy recovery and power generation in the workover rig traveling system and saving operating costs.

Referring to Figures 2 and 4, the disc brake device 3 includes a brake disc 31 provided on the winch frame 1, a normally closed safety gear 32 and a normally open safety gear 33. The disc brake device 3 also includes a A first braking member for pushing and braking the normally closed safety gear 32 and a second braking member for pushing and braking the normally open safety gear 33 . Wherein, the first brake part and the second brake part may be the same structural component or may be different structural components, and the principle of the first brake part and the second brake part is to use fluid pressure to promote braking. Fluid pressure includes but is not limited to compressed air and hydraulic power. The normally closed safety gear 32 is used for the parking brake of the winch, and the normally open safety gear 33 is used for braking during the winch operation. When the winch needs emergency braking, the normally closed safety gear 32, the normally open safety gear 33 and the variable frequency motor 4 Brake simultaneously.

Referring to Figures 1-6, the winch frame 1 is also provided with an emergency power device 6. The emergency power device 6 includes: a driving member 61 and a first transmission member 62 connected to the driving member 61. One end of the drum 2 is fixed with a second transmission member 63 that is drivingly connected to the first transmission member 62 . The driving member 61 drives the rotation of the first transmission member 62, and the first transmission member 62 transmits the rotation force to the drum 2 through the second transmission member 63, so that the drum 2 can keep rotating even when the frequency conversion motor 4 fails. Therefore, when the variable frequency motor 4 cannot work normally due to a power outage or failure of the variable frequency motor 4, the emergency power device 6 is used as a backup power source to ensure the normal rotation of the drum 2.

Specifically, the first transmission member 62 is a first gear, the driving member 61 is used to drive the rotation of the gear, and the second transmission member 63 is a second gear meshing with the first gear, And the number of teeth of the second gear is greater than the number of teeth of the first gear. The driving member 61 includes but is not limited to an electric motor, a pneumatic motor, a hydraulic motor, etc., and the emergency power device 6 meshes the first gear of the emergency power device 6 with the second gear connected to the winch drum 2 through a clutch coupling mechanism. By setting the number of teeth of the second gear to be greater than the number of teeth of the first gear, the emergency power device 6 increases the torque through the deceleration of the gear, and drives the drum 2 to achieve emergency lifting of a limited load; thus avoiding power outages or failure of the variable frequency motor 4, etc. serious operating accidents and improve the safety of well workover operations.

Referring to Figures 1-6, in this application, a first encoder 7 is installed at the input end of the variable frequency motor 4, and a second encoder 8 is installed at the output end of the drum 2. The first encoder 7 The second encoder 8 is used to obtain the number of rotations of the variable frequency motor 4, and the second encoder 8 is used to obtain the number of rotations of the drum 2 to monitor the connection reliability of the conical clamping coupling 5; the winch The frame 1 is also provided with a controller that is electrically connected to the first encoder 7 , the second encoder 8 , the disc brake device 3 and the variable frequency motor 4 .

The winch is provided with a first encoder 7 and a second encoder 8. The first encoder 7 is installed at the input end of the variable frequency motor 4, and the second encoder 8 is installed at the output end of the drum 2. The first encoder 7 The signals detected by the first encoder 7 and the second encoder 8 are transmitted to the controller. By detecting the difference in the number of rotations of the first encoder 7 and the second encoder 8 at the same time, the conical clamp between the variable frequency motor 4 and the drum 2 is determined. Is the connection of tight coupling 5 failed? In addition, the second encoder 8 provided at the output end of the drum 2 also has the function of detecting the rotation speed of the winch in real time. If there is a difference in the number of relative rotations of the first encoder 7 and the second encoder 8, or the detected winch speed exceeds the maximum speed set by the winch, the controller will immediately and synchronously start the hovering energy consumption braking and disc brake devices of the variable frequency motor 4 3 brakes realize real-time monitoring and emergency control capabilities of winch operations, greatly improving the reliability and safety of winch operations.

Referring to Figures 1-6, the winch frame 1 is provided with a temperature sensor for monitoring the temperature of the variable frequency motor 4. A variable frequency fan 9 is also installed next to the variable frequency motor 4. The temperature sensor and the variable frequency fan are 9 are all electrically connected to the controller. The entirety of the variable frequency fan 9 is supported by the volute air outlet connection flange and is installed on the variable frequency motor 4. The air inlet of the variable frequency fan 9 has a sand and dust filtering device. In addition, the variable frequency fan 9 is a fan controlled by the variable frequency driver 61. Therefore, the temperature of the variable frequency motor 4 is monitored by detecting the temperature sensor and transmits the temperature signal to the controller. The controller changes the power of the variable frequency fan 9 in real time through the temperature signal.

Optionally, the air inlet and outlet of the variable frequency fan 9 are noise-reducing, which solves the problems in the industry that the winch variable frequency fan 9 has high constant power energy consumption, energy waste, and high noise. It should be noted that the noise reduction treatment of the air inlet and the air outlet of the variable frequency fan 9 includes installing noise reduction parts on the air inlet and the air outlet of the variable frequency fan 9 to achieve the noise reduction effect. In addition, you can also directly choose the finished variable frequency fan 9 that has been completely processed for noise reduction.

The winch frame 1 is also provided with a junction box 10, the controller is arranged in the junction box 10, and the variable frequency motor 4, the temperature sensor, the variable frequency fan 9, the first code The wires of the encoder 7 and the second encoder 8 are all arranged in the junction box 10 through integrated wiring; the junction box 10 is also provided with an emergency stop self-locking button, which is used to control the variable frequency motor 4 For emergency stop operation, the emergency stop self-locking button is installed on the junction box 10. If the intelligent control of the variable frequency motor 4 fails, the emergency stop self-locking button switch can be quickly manually pressed to realize the emergency stop operation of the variable frequency motor 4.

The variable frequency motor 4 is also equipped with a wind pressure switch and a moisture-proof heating belt. When the temperature sensor detects that the temperature of the variable frequency motor 4 is too high, or the wind pressure switch detection device detects poor ventilation, it can immediately provide feedback to the control The controller decelerates or stops the variable frequency motor 4. Moisture-proof heating belt When the external ambient temperature is lower than the allowable operating temperature, or the temperature is too low, frost condenses inside the variable frequency motor 4, or when it is shut down, the power is turned on to heat up the variable frequency motor 4 and insulate it to prevent the variable frequency motor 4 from getting damp and reducing the insulation performance. , affecting equipment safety. Through the temperature sensor, wind pressure switch and moisture-proof heating belt, the controller can cooperate with each other to protect the service life of the variable frequency motor 4 and at the same time adjust the working environment of the variable frequency motor 4 in a timely manner, greatly improving the safety of the operation.

Among them, the variable frequency motor 4 and the junction box 10 are both explosion-proof products, the variable frequency fan 9 and the emergency stop self-locking button are explosion-proof products, the moisture-proof heating belt is an increased safety product, and the temperature sensor and air pressure switch are intrinsically safe products. .

In addition, the variable frequency motor 4, the variable frequency fan 9, the temperature sensor, the power cable of the moisture-proof heating belt, the air pressure switch, the emergency stop self-locking button component, the loop cable of the temperature sensor temperature measuring resistor, the first encoder 7 and the second encoder The sensor cables and other wires of the device 8 are all integrated in the junction box 10, which realizes the full explosion-proof effect of the winch cable terminal and greatly improves the electrical safety of the whole machine.

Referring to Figures 1 to 6, the winch frame 1 includes a bottom skid 11, two vertical frames 12 are arranged at intervals on the bottom skid 11, and the drum 2 is rotatably arranged between the two vertical frames 12; The bottom of the bottom skid 11 is detachably connected to a chassis auxiliary beam 13. Among them, the stand 12 is welded to the bottom skid 11. For example, the bottom skid 11 and the chassis auxiliary beam 13 can be detachably connected using bolts or pins, and are used on the bottom skid 11 on the back panel side of the winch. Welding nuts or tapping methods are used to install the bolt group through the countertop of the chassis auxiliary beam 13; the drum 2 is installed on the stands on both sides of the winch frame 1 through connecting parts such as roller bearings, bushings, and bolt groups. 12 on.

The winch frame 1 also includes a disc brake shield and an oil baffle plate, which are bolted to the winch frame 1. The disc brake shield has a mesh observation hole and two push-pull maintenance windows on the side. The disc brake shield is used to observe the working status of the disc brake device 3 and to timely inspect and repair the normally open working clamp and the normally closed safety clamp 32. The various mechanism components of the winch are integrated and installed on the winch frame 1, and the winch is a separate skid; the problem of limited fixed installation space for the winch and inconvenient disassembly and maintenance is solved, and the various skid components of the workover rig are tightly connected, and the winch can be quickly installed and disassembled, which improves the compactness and modularity of the overall layout.

Optionally, a rope guide 14 is provided on opposite sides of the two stands 12. The rope guide 14 is located above the drum 2, and a rope guide roller is rotated on the rope guide 14. 15. The winch frame 1 is also provided with a rope guide guard. The rope guide guard and the winch frame 1 are connected by bolts. The rope guide 14 is installed on the rope guide guard. Rope guides are installed on both sides of the axis of the drum 2. When the wire rope is close to the edge of the drum 2, the rope guide roller 15 on the rope guide frame 14 changes the transverse rope exit direction of the wire rope to prevent ineffective friction between the wire rope and the drum 2.

Referring to Figures 1-6, in this application, the winch frame 1 is also provided with an over-rolling anti-collision device 16. The over-rolling anti-collision device 16 is used to detect whether the drum 2 is over-wound with the wire rope, thereby preventing the swimming system from hitting the derrick. The crane caused serious accidents. The inside of the top of the winch frame 1 contains a slide rail wheel groove, and the overroll anti-collision device 16 is installed in the slide rail wheel groove.

To sum up, during well workover operations, when it is necessary to lift the pipe string or other working tools, the low base frequency and high torque AC variable frequency motor 4 is used as the power source to directly drive the drum 2 to rotate through the conical clamping coupling 5. By winding the wire rope on the drum 2, the traveling system, pipe string or working tools are lifted. The electric frequency changed by the frequency converter of the workover rig is sent to the variable frequency motor 4 to change the rotation speed of the variable frequency motor 4, thereby effectively controlling the lifting speed.

During well workover operations, when it is necessary to lower a pipe string or other working tools, the gravity of the traveling system, pipe string or working tools drives the drum 2 to release the wire rope on the drum 2 to complete the lifting of the traveling system, pipe string or working tools. Decentralize. The controller controls the hovering energy consumption braking of the variable frequency motor 4 and the braking of the disc brake device 3 to effectively control the lowering speed and load hovering.

The above descriptions are only specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications and variations to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be practiced in other embodiments without departing from the spirit or scope of the application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of this application shall be included in the protection scope of this application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

A motor direct-drive winch, including:

winch frame(1);

The drum (2) is rotatably installed on the winch frame (1);

A disc brake device (3) is connected to one end surface of the drum (2), and the disc brake device (3) is provided on the winch frame (1); and

A variable frequency motor (4) is connected to the other end face of the drum (2). The variable frequency motor (4) is arranged on the winch frame (1), and the output shaft of the variable frequency motor (4) is connected to the other end surface of the drum (2). The axis of the drum (2) is coaxially arranged.
The motor direct drive winch according to claim 1, wherein the drum (2) includes a shaft body and a cylinder sleeved on the peripheral side of the shaft body, and the shaft body is rotatably arranged on the winch frame ( 1), one end of the shaft body is fitted into the inner shaft hole of the rotor of the variable frequency motor (4), and the shaft body and the variable frequency motor (4) are connected through a tapered clamping coupling (5) connect.
The motor direct drive winch according to claim 1, wherein the disc brake device (3) includes a brake disc (31) arranged on the winch frame (1), a normally closed safety gear (32) and a normally closed safety gear (32). To open the safety gear (33), the disc brake device (3) also includes a first brake member for pushing and braking the normally closed safety gear (32) and a first braking member for pushing and braking the normally open safety gear (32). 33) of the second brake.
The motor direct-drive winch according to claim 1, wherein the winch frame (1) is further provided with an emergency power device (6), and the emergency power device (6) includes: a driving member (61) and a The first transmission member (62) is connected to the driving member (61), and a second transmission member (63) is fixed to one end of the roller (2) and is drivingly connected to the first transmission member (62).
The motor direct-drive winch according to claim 4, wherein the first transmission member (62) is a first gear, the driving member (61) is used to drive the rotation of the gear, and the second transmission member (63) is a second gear meshing with the first gear, and the number of teeth of the second gear is greater than the number of teeth of the first gear.
The motor direct-drive winch according to claim 2, wherein a first encoder (7) is installed at the input end of the variable frequency motor (4), and a second encoder (7) is installed at the output end of the drum (2). 8), the first encoder (7) is used to obtain the number of rotations of the variable frequency motor (4), and the second encoder (8) is used to obtain the number of rotations of the drum (2) to monitor the The connection reliability of the tapered clamping coupling (5); the winch frame (1) is also provided with the first encoder (7), the second encoder (8), and the The disc brake device (3) and the variable frequency motor (4) are both electrically connected to the controller.
The motor direct-drive winch according to claim 6, wherein the winch frame (1) is provided with a temperature sensor for monitoring the temperature of the variable frequency motor (4), and a temperature sensor is installed next to the variable frequency motor (4). The variable frequency fan (9), the temperature sensor and the variable frequency fan (9) are all electrically connected to the controller.
The motor direct-drive winch according to claim 7, wherein the winch frame (1) is further provided with a junction box (10), the controller is arranged in the junction box (10), and the The wires of the variable frequency motor (4), the temperature sensor, the variable frequency fan (9), the first encoder (7) and the second encoder (8) are all arranged on the wiring through integrated wiring. Inside the box (10).
The motor direct-drive winch according to claim 1, wherein the winch frame (1) includes a bottom skid (11), and two vertical frames (12) are arranged at intervals on the bottom skid (11). The roller (2) is rotated and arranged between the two stands (12); the bottom of the bottom skid (11) is detachably connected to a chassis auxiliary beam (13).
The motor direct drive winch according to claim 9, wherein a rope guide frame (14) is provided on the opposite side of the two stands (12), and the rope guide frame (14) is located on the drum ( 2), a rope guide roller (15) is rotatably provided on the rope guide frame (14).