CN216686977U - Rotating device and winch - Google Patents

Abstract

The embodiment of the utility model provides a rotating device of a winch for winding a cable, which comprises a rotor, a stator, at least one conductive elastic component and at least one conductive rotating component, wherein the conductive elastic component is used for being connected with an output wire, the conductive rotating component is used for being electrically connected with an input wire, the stator is rotationally connected with the rotor, the conductive elastic component is connected with the stator, the conductive elastic component comprises an elastic piece and an abutting piece, the conductive rotating component is arranged on the rotor so as to rotate along with the rotor, and the abutting piece is in conductive contact with the conductive rotating component under the action of elastic force exerted by the elastic piece. In the rotating device in the embodiment of the utility model, the elastic force applied by the elastic piece enables the position of the abutting part to generate adaptive change, so that a gap generated between the abutting part and the elastic piece due to long-term contact friction is made up, the abutting part and the conductive rotating assembly are always attached, the conductive rotating assembly and the conductive elastic assembly are kept in an electrically conductive state, and the stability of electric signal transmission is improved.

Description

Rotating device and winch

Technical Field

The utility model relates to the field of cable winding and unwinding equipment, in particular to a rotating device and a winch.

Background

When the detection equipment is used for detecting in a well, a cable connected between the detection equipment and the ground acquisition control system needs to be wound and unwound so as to adapt to depth adjustment of the detection equipment in the well.

Generally, a winch is adopted to reel the cable, and the cable is continuously wound or released on a rotating shaft of the winch to reel the cable.

The rotating shaft of the winch can rotate continuously in the process of winding and releasing the cable, the cable wound on the rotating shaft can be twisted continuously along with the rotation of the rotating shaft, and poor contact and even damage of a wire inside the cable can be caused, so that the electric signal cannot be conducted. Therefore, in the prior art, a rotation device is generally arranged on the winch to prevent the cable from twisting.

In the prior art, a rotating device generally comprises a stator and a rotor, wherein the rotor is connected with an input wire, the stator is connected with an output wire, and the rotor is in conductive contact with the stator. During the use, thereby the rotor can constantly rotate along with the input electric wire and release its torsional force, has avoided the torsion of cable when realizing that the signal of telecommunication switches on. However, after the winch is used for a period of time, the cable is prone to poor conduction, and stable and reliable signal transmission between the detection equipment and the ground acquisition control system is affected.

SUMMERY OF THE UTILITY MODEL

In view of the above, embodiments of the present application are directed to a rotating device with stable conductive transmission.

In order to achieve the above purpose, the technical solution of the embodiment of the present application is implemented as follows:

a rotation device for a winch that winds a cable, the rotation device comprising:

a rotor;

a stator rotationally coupled to the rotor;

at least one conductive elastic component used for being connected with an output wire, wherein the conductive elastic component is connected with the stator and comprises an elastic piece and an abutting piece;

at least one conductive rotating assembly used for being electrically connected with an input wire, wherein the conductive rotating assembly is arranged on the rotor to rotate along with the rotor, and the abutting part keeps conductive contact with the conductive rotating assembly under the action of elastic force exerted by the elastic part.

In some embodiments, the abutting member is a main conductive ball for maintaining conductive contact with the output wire, the elastic member is a spring, the main conductive ball is arranged in a telescopic direction of the spring, and the main conductive ball is maintained in conductive rolling abutment with the conductive rotating assembly under the elastic force applied by the spring.

In some embodiments, the conductive elastic component comprises a mounting seat for keeping conductive connection with the output electric wire, the mounting seat comprises a first abutting surface and a second abutting surface, the second abutting surface abuts against the spring, the first abutting surface is located on the side, away from the spring, of the second abutting surface, and the first abutting surface is in rolling abutment with the main conductive ball.

In some embodiments, the mounting seat includes a plurality of secondary conductive balls, the first abutting surface forms a recess, the first abutting surface has a ball groove, and a plurality of secondary conductive balls are disposed in the ball groove and are in rolling contact with the primary conductive ball.

In some embodiments, the conductive elastic component includes a conductive adaptor and a mounting block, the conductive adaptor and the mounting block are used for being electrically connected to the output electric wire, the mounting block is provided with a mounting cavity and a communication hole located on one side of the mounting block facing the conductive rotating component, the spring, the mounting seat and the main conductive ball are located in the mounting cavity, a part of the main conductive ball passes through the communication hole and contacts with the conductive rotating component, the mounting block is provided with a transfer hole which is arranged along an axial direction of the rotor rotating direction and faces the output electric wire, and the conductive adaptor passes through the transfer hole and electrically contacts with the mounting seat.

In some embodiments, the conductive adaptor includes a conductive plate and a transfer ball, the transfer ball is located in the transfer hole, the conductive plate is covered on the transfer hole, one side of the conductive plate is in rolling contact with the transfer ball, the other side of the conductive plate is used for being connected with the output wire, and the transfer ball is in rolling contact with the mounting base.

In some embodiments, the stator includes a housing, the housing has a mounting opening, a receiving cavity formed by the housing is communicated with the outside through the mounting opening, the rotor includes a central shaft, each of the conductive rotating assemblies is connected to a circumferential surface of the central shaft and arranged at intervals along an axial direction of the central shaft, at least a portion of the central shaft can penetrate through the mounting opening to enter the receiving cavity, and each of the conductive rotating assemblies is located in the receiving cavity.

In some embodiments, the central shaft is provided with a plurality of stepped surfaces along the axial direction, and each conductive rotating assembly is attached to the corresponding stepped surface.

In some embodiments, the conductive rotating assembly includes a rotating disk fixedly connected to the rotor, and a conductive member having a long rod shape, one end of the conductive member is fixedly connected to an axial surface of the rotating disk, and the other end of the conductive member is configured to be electrically connected to the input wire, and the rotating disk is in conductive contact with the corresponding conductive elastic assembly.

In some embodiments, the rotating disk is provided with an avoiding groove passing through the rotating disk along the axial direction of the rotating disk, and the conductive members on the other conductive rotating assemblies pass through the avoiding groove.

In some embodiments, the rotating disc includes a conductive ring and an insulating ring, the insulating ring is provided with a rotor mounting hole, the rotor is inserted into the rotor mounting hole and is fixedly connected with the insulating ring, the conductive ring is arranged around the insulating ring, the conductive ring is electrically connected with the conductive member, and a circumferential surface of the conductive ring is in conductive contact with the corresponding conductive elastic component.

The embodiment of the utility model also provides a winch, which comprises a support, a roller for winding an input wire and the rotating device in any embodiment, wherein the roller is rotatably connected with the support, the roller and the support are jointly surrounded to form a cavity, the rotating device is arranged in the cavity, the rotating axis of a rotor is coaxial with the rotating axis of the roller, the stator is fixedly connected with the support, the circumferential surface of the roller is provided with a wire inlet hole for allowing the input wire to enter the cavity, and the support is provided with a wire outlet hole for allowing the output wire to enter the cavity.

In some embodiments, the winch includes a first gear, a first handle, a second gear, and a second handle, the first gear is coaxially and fixedly connected with the drum and rotatably connected with the bracket, the first handle is fixed on a side surface of the first gear, the second gear is in meshing transmission with the first gear, the first gear and the second gear have different numbers of teeth, the second gear is rotatably connected with the bracket, and the second handle is fixed on a side surface of the second gear.

In the rotating device provided by the embodiment of the utility model, the electric signal is conducted through the input electric wire, the conductive rotating assembly, the conductive elastic assembly and the output electric wire in sequence. The conductive rotating assembly rotates relative to the conductive elastic assembly, so that the twisting force generated by the input wire in the rotation process is released along with the rotation of the conductive rotating assembly, and the input wire is prevented from being continuously twisted due to rotation. The position that can make the butt piece through the elastic force that the elastic component was applyed takes place adaptability and changes to compensate the clearance that produces because of long-term contact friction between butt piece and the elastic component, make butt piece and electrically conductive rotating assembly laminate all the time, realize electrically conductive rotating assembly and electrically conductive elastic component and keep the state that the electric conductance leads to, improved signal of telecommunication transmission's stability, prolonged rotating device's life.

Drawings

FIG. 1 is a schematic view of a rotating device, input wires and output wires in an embodiment of the present invention;

FIG. 2 is a cross-sectional view taken at location A-A of FIG. 1;

FIG. 3 is an enlarged view of position B of FIG. 2;

FIG. 4 is an enlarged view of the location C in FIG. 2;

FIG. 5 is an exploded view of a rotating device in an embodiment of the present invention;

FIG. 6 is an exploded view of an electrically conductive elastomeric member in accordance with an embodiment of the present invention;

FIG. 7 is a schematic view of a rotating disk in an embodiment of the present invention, wherein the hatched portion is an insulating ring;

FIG. 8 is a schematic view of a drawworks in an embodiment of the present invention;

FIG. 9 is a schematic view from another perspective of the drawworks shown in FIG. 8 with a partial cross-sectional illustration of the drum within the dashed line.

Description of the reference numerals

A rotating device 10; a stator 11; a housing 111; a mounting opening 111 a; the accommodation chamber 111 b; a mounting groove 111 c; a rotor 12; a central shaft 121; end caps 122; a first bearing 123; a second bearing 124; a stepped surface 1211; a conductive elastic member 13; an elastic member 131; a spring 1311; an abutment member 132; primary conductive balls 1321; a mount 133; ball grooves 133 a; a first abutment surface 1331; a second abutment surface 1332; a secondary conductive ball 1333; a mounting block 134; the communication hole 134 a; mounting cavity 134 b; a transfer hole 134 c; a conductive adaptor 135; transfer balls 1351; a conductive plate 1352; a conductive rotating assembly 14; a rotating disk 141; a avoiding groove 141 a; a rotor mounting hole 141 b; a conductive ring 1411; an insulating ring 1412; a conductive member 142; an input wire 20; an output wire 30; a drum 40; a wire inlet hole 40 a; a cavity 40 b; a bracket 50; an outlet hole 50 a; a first gear 60; a second gear 70; a first handle 80; second handle 90

Detailed Description

It should be noted that, in the present application, technical features in examples and embodiments may be combined with each other without conflict, and the detailed description in the specific embodiment should be understood as an explanation of the gist of the present application and should not be construed as an improper limitation to the present application.

In the description of the present application, an "axial" orientation or positional relationship is based on the orientation or positional relationship shown in fig. 2, it being understood that such orientation terms are merely for convenience in describing the present application and for simplicity of description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered limiting of the present application.

An embodiment of the present invention provides a rotating device 10 for a winch for winding a cable, and referring to fig. 1 to 7, the rotating device 10 includes a rotor 12, a stator 11, at least one conductive elastic member 13 for connecting with an output wire 30, and at least one conductive rotating member 14 for electrically connecting with an input wire 20.

The stator 11 is connected with the rotor 12 in a rotating manner, that is, the rotor 12 rotates relative to the stator 12, the conductive elastic component 13 is connected with the stator 11, the conductive elastic component 13 comprises an elastic member 131 and an abutting member 132, the conductive rotating component 14 is arranged on the rotor 12 to rotate along with the rotor 12, and the abutting member 132 is kept in conductive contact with the conductive rotating component 14 under the action of the elastic force exerted by the elastic member 131.

The electric signal is conducted through the input wire 20, the conductive rotating assembly 14, the conductive elastic assembly 13 and the output wire 30 in sequence. The conductive rotating assembly 14 rotates relative to the conductive elastic assembly 13, so that the twisting force generated by the input wire 20 in the rotation process is released along with the rotation of the conductive rotating assembly 14, and the input wire 20 is prevented from being continuously twisted due to the rotation. The position of the abutting part 132 can be changed adaptively through the elastic force applied by the elastic part 131, so that a gap between the abutting part 132 and the elastic part 131, which is generated due to long-term contact friction, is made to be always attached to the abutting part 132 and the conductive rotating component 14, the conductive rotating component 14 and the conductive elastic component 13 are kept in an electrically conductive state, the stability of electrical signal transmission is improved, and the service life of the rotating device 10 is prolonged.

It can be understood that the connection mode of the output wire 30 and the conductive elastic component 13 and the connection mode of the input wire 20 and the conductive rotating component 14 can be flexibly selected according to the specific installation condition of the rotating device 10, for example, the output wire 30 and the conductive elastic component 13, and the input wire 20 and the conductive rotating component 14 can be completely fixed by soldering; for another example, terminal blocks are arranged on the conductive elastic component 13 and the conductive rotating component 14, terminals are arranged at the end parts of the output electric wire 30 and the input electric wire 20, and quick connection is realized by plugging the terminals and the terminal blocks, so that the maintainability of later use is improved.

It is understood that the specific structural forms of the abutting member 132 and the elastic member 131 can be optimized to further improve the stability of the electrical signal transmission. For example, the abutting member 132 may be provided in a plate shape to increase a contact area between the abutting member 132 and the conductive rotating member 14, and reduce abrasion due to friction by reducing pressure therebetween; for another example, the elastic member 131 may be an insulating elastic rubber member to prevent the electric signal from being directly transmitted to the stator 11 to weaken the strength of the electric signal.

Illustratively, in some embodiments, referring to fig. 3 and 5, the abutting member 132 is a main conductive ball 1321 for maintaining conductive communication with the output wire 30, the elastic member 131 is a spring 1311, the main conductive ball 1321 is arranged in a telescopic direction of the spring 1311, and the main conductive ball 1321 maintains conductive rolling abutment with the conductive rotating assembly 14 under the elastic force applied by the spring 1311. The friction between the main conductive ball 1321 and the conductive rotating assembly 14 is rolling friction, so that the friction force between the two is greatly reduced, the abrasion speed between the two is reduced, and the service life of the rotating device 10 is prolonged. In addition, rolling friction produces less noise than sliding friction, making the turning gear 10 more ergonomic and improving the working environment.

The spring 1311 may be insulated or electrically insulated from the main conductive ball 1321 by disposing a structural member made of an insulating material between the spring 1311 and the main conductive ball 1321 to prevent electric current from being directly conducted from the main conductive ball 1321 to the stator 11.

It can be understood that the main conductive ball 1321 and the output wire 30 are electrically connected, and the main conductive ball 1321 and the output wire 30 are in direct contact to realize the transmission of the electrical signal, so as to reduce the number of parts and make the structure of the rotating device 10 compact; the main conductive ball 1321 and the output wire 30 can be switched through a conductive structural member, continuous friction between the main conductive ball 1321 and the output wire 30 is avoided, the connection position between the output wire 30 and the main conductive ball 1321 is prevented from being rapidly abraded, and the stability of electric signal transmission is improved.

For example, in some embodiments, referring to fig. 3 and 5, the conductive elastic component 13 includes a mounting seat 133 for maintaining conductive connection with the output wire 30, the mounting seat 133 includes a first abutting surface 1331 and a second abutting surface 1332, the second abutting surface 1332 abuts against the spring 1311, the first abutting surface 1331 is located on a side of the second abutting surface 1332 facing away from the spring 1311, and the first abutting surface 1331 is in rolling abutment with the main conductive ball 1321. The mount 133 prevents the main conductive ball 1321 from directly contacting the spring 1311, prevents the main conductive ball 1321 rolling continuously from directly rubbing the spring 1311, and prevents the spring 1311 from being weakened by an elastic force caused by abrasion, thereby improving the conductive stability of the rotating apparatus 10.

It will be appreciated that the configuration of the mount 133 may be further optimised to reduce friction between the first abutment surface 1331 and the main conductive ball 1321 whilst ensuring that conductive contact is achieved between the two.

Illustratively, in some embodiments, referring to fig. 5, the first abutment surface 1331 forms a recess. The first abutting surface 1331 can be attached to the arc surface of the main conductive ball 1321, so that the contact area between the two is increased, the friction force between the two is reduced, and the wear speed of the contact position between the two is delayed. In addition, when assembling, the first abutting surface 1331 in the concave shape can apply certain constraint to the main conductive ball 1321, reduce the probability that the main conductive ball 1321 rolls down in the assembling process, improve the assembling efficiency and save time.

Further, in some embodiments, referring to fig. 5, the mounting seat 133 includes a plurality of secondary conductive balls 1333, the first abutting surface 1331 has a ball groove 133a, and the plurality of secondary conductive balls 1333 are disposed in the ball groove 133a and are in rolling abutment with the primary conductive ball 1321. The friction is further reduced by the form of rolling friction between the sub conductive ball 1333 and the main conductive ball 1321, thereby increasing the lifespan of the rotating device 10.

It will be appreciated that in some embodiments, referring to fig. 5, two ball grooves 133a are provided and extend perpendicularly across between the two ball grooves 133 a. The friction force of the main conductive ball 1321 rolling in any direction is reduced, and the probability that the main conductive ball 1321 and the auxiliary conductive ball 1333 cannot roll due to jamming is reduced.

In some embodiments, referring to fig. 3 and 5, the conductive elastic component 13 includes a conductive adaptor 135 and a mounting block 134 for electrically connecting with the output wire 30, the mounting block 134 is provided with a mounting cavity 134b and a communication hole 134a located on one side of the mounting block 134 facing the conductive rotating component 14, the spring 1311, the mounting seat 133 and the main conductive ball 1321 are located in the mounting cavity 134b, a portion of the main conductive ball 1321 passes through the communication hole 134a and contacts with the conductive rotating component 14, the mounting block 134 is provided with an adaptor hole 134c which is opened along an axial direction of a rotation direction of the rotor 12 and faces the output wire 30, and the conductive adaptor 135 passes through the adaptor hole 134c and electrically contacts with the mounting seat 133. The mounting block 134 provides a mounting position for the spring 1311 and the main conductive ball 1321, prevents the main conductive ball 1321 from falling off during assembly and use, facilitates the simultaneous fitting and mounting of the spring 1311 and the main conductive ball 1321 and the stator 11, and reduces assembly time. Because the mounting seat 133 can be displaced along with the elastic deformation of the elastic member 131, in order to prevent the output electric wire 30 from being damaged due to friction between the output electric wire 30 and other structures caused by the movement of the output electric wire 30 driven by the mounting seat 133, the conductive adaptor 135 is disposed to connect the mounting seat 133 and the output electric wire 30, so as to prevent the mounting seat 133 from directly applying an acting force to the output electric wire 30.

Further, in some embodiments, referring to fig. 3 and 5, the conductive adaptor 135 includes a conductive plate 1352 and a transfer ball 1351, the transfer ball 1351 is located in the transfer hole 134c, the conductive plate 1352 is covered on the transfer hole 134c, one side of the conductive plate 1352 is in rolling contact with the transfer ball 1351, the other side of the conductive plate 1352 is used for connecting with the output wire 30, and the transfer ball 1351 is in rolling contact with the mounting base 133. The transfer balls 1351 reduce the friction between the conductive adaptor 135 and the mounting seat 133, and reduce the probability of unstable conductivity due to abrasion.

It is understood that the main conductive ball 1321, the mounting seat 133, the sub conductive ball 1333, the adapting ball 1351 and the conductive plate 1352 in the above embodiments may be directly made of conductive materials such as copper and silver, or may be formed by a surface plating process to perform a conductive function.

It will be appreciated that the configuration of the stator 11 and rotor 12 may be optimized to facilitate the arrangement and mounting of the conductive elastic member 13 and conductive rotating member 14.

Specifically, in some embodiments, referring to fig. 2 and 5, the stator includes a housing 111, a mounting opening 111a is formed in the housing 111, an accommodating cavity 111b formed by the enclosure of the housing 111 communicates with the outside through the mounting opening 111a, the rotor 12 includes a central shaft 121, each conductive rotating assembly 14 is connected to a circumferential surface of the central shaft 121 and is arranged at intervals along an axial direction of the central shaft 121, at least a portion of the central shaft 121 can penetrate through the mounting opening 111a to enter the accommodating cavity 111b, and each conductive rotating assembly 14 is located in the accommodating cavity 111 b. The housing 111 provides a space required for mounting the rotor 12, the conductive rotating component 14 and the conductive elastic component 13 through the accommodating cavity 111b formed by enclosing, and protection is formed through the housing 111, so that the probability of damage caused by collision in the mounting process of the rotating device 10 is reduced. The conductive rotating assemblies 14 are coaxially arranged along the axial direction of the central shaft 121 at intervals, so that the space required for arrangement is reduced, the structural compactness of the device is improved, and meanwhile, the air can conveniently flow into the gaps among the conductive rotating assemblies 14, so that heat generated by continuous friction between the conductive rotating assemblies 14 and the conductive elastic assemblies 13 is taken away, and the probability of damage to the conductive rotating assemblies 14 and the conductive elastic assemblies 13 caused by overheating is reduced.

Further, in some embodiments, referring to fig. 4, the central shaft 121 is provided with a plurality of stepped surfaces 1211 along the axial direction, and each conductive rotating assembly 14 is attached to its corresponding stepped surface 1211. The stepped surface 1211 provides a location for mounting the conductive rotating assemblies 14, so that the conductive rotating assemblies 14 can be kept at a uniform distance when the rotating device 10 is assembled, the assembly workload is reduced, and the assembly time is saved.

In some embodiments, referring to fig. 3 and 5, the rotor 12 includes an end cover 122, one end of the central shaft 121 is fixed to the end cover 122, and the end cover 122 covers the mounting opening 111 a. The end cover 122 provides spacing and support for the assembly of center pin 121 on the one hand, can fix a position and fix fast when being convenient for center pin 121 to assemble, improves assembly efficiency, and on the other hand, the end cover 122 lid closes the back on installing port 111a, can further provide the protection to each part in the casing 111, prevents that great foreign matter from entering into the use that influences rotary device 10 in the casing 111.

It is understood that a plurality of through holes (not shown) are formed in the end cap 122 and the housing 111 to facilitate the connection between the input wires 20 and the conductive rotating assembly 14, and between the output wires 30 and the conductive elastic assembly 13.

The rotor 12 and the stator 11 may be rotatably connected by a sliding bearing or a rolling bearing.

For example, in some embodiments, referring to fig. 3 and 5, rotor 12 includes a first bearing 123 and a second bearing 124, an inner race of first bearing 123 being fixed to a circumferential surface of an end of central shaft 121 remote from end cap 122, an outer race of first bearing 123 being fixed to housing 111; the inner race of second bearing 124 is fixed to the circumferential surface of end cap 122 and the outer race is fixed to housing 111. The two ends of the rotor 12 are supported by the first bearing 123 and the second bearing 124, respectively, so that friction between the two ends of the rotor 12 and the housing 111 is avoided. The standard rolling bearing can reduce noise generated in rotation, is convenient to purchase and reduces manufacturing cost.

In some embodiments, referring to fig. 3 and 5, a plurality of mounting grooves 111c are axially formed in the inner side surface of the housing 111, and the conductive elastic member 13 is disposed in the mounting grooves 111 c. The mounting groove 111c provides a mounting position for the conductive elastic component 13, so that the conductive elastic component 13 is fixed during assembly, and the conductive elastic component 13 is limited.

In some embodiments, referring to fig. 3 and 5, the conductive rotating assembly 14 includes a rotating disk 141 and a conductive member 142, the rotating disk 141 is fixedly connected to the rotor 12, the conductive member 142 has a long rod shape, one end of the conductive member 142 is fixedly connected to an axial surface of the rotating disk 141, the other end of the conductive member 142 is used for electrical connection with the input wire 20, and the rotating disk 141 is in conductive contact with the corresponding conductive elastic assembly 13. The rotating disk 141 conducts an electrical signal to the conductive elastic member 13 during rotation, and a path of conducting an electrical signal along the input electric wire 20, the conductive member 142, the rotating disk 141 and the conductive elastic member 13 is implemented by the conductive member 142.

In some embodiments, referring to fig. 3, 5 and 7, the rotating disc 141 is provided with an avoiding groove 141a axially penetrating through the rotating disc 141 along the rotating direction of the rotating disc 141, and the conductive member 142 of the other conductive rotating assembly 14 penetrates through the avoiding groove 141 a. The avoiding groove 141a prevents interference between the axial arrangement of the conductive members 142 and the rotating disks 141, and the avoiding groove 141a reduces the mass of the rotating disks 141, the load of the rotor 12 during rotation, and the heat generated during rotation.

An insulating structure may be provided on the rotating disk 141 or the rotor 12 to prevent the electric signal from being transmitted to the rotor 12.

Illustratively, in some embodiments, referring to fig. 7, the rotating disk 141 includes a conductive ring 1411 and an insulating ring 1412, the insulating ring 1412 is provided with a rotor mounting hole 141b, the rotor 12 is inserted into the rotor mounting hole 141b and fixedly connected to the insulating ring 1412, the conductive ring 1411 surrounds the insulating ring 1412, the conductive ring 1411 is electrically connected to the conductive member 142, and a circumferential surface of the conductive ring 1411 is electrically contacted to the corresponding conductive elastic member 13. The insulating ring 1412 prevents the transmission of electrical signals to the rotor 12. The circumferential surface of the conductive ring 1411 is in continuous contact with the conductive elastic component 13 during the rotation process, so that the displacement change of the abutting part 132 along the expansion direction of the elastic part 131 is small, the expansion change range of the elastic part 131 is reduced, and the probability that the elastic force of the elastic part 131 is weakened or even lost due to the overlarge expansion range is reduced.

The embodiment of the utility model further provides a winch, referring to fig. 8 and 9, the winch comprises a support 50, a roller 40 for winding the input electric wire 20 and a rotating device 10 in any one of the above embodiments, the roller 40 is rotatably connected with the support 50, the roller 40 and the support 50 jointly enclose to form a cavity 40b, the rotating device 10 is arranged in the cavity 40b, the rotating axis of the rotor 12 is coaxial with the rotating axis of the roller 40, the stator 11 is fixedly connected with the support 50, the circumferential surface of the roller 40 is provided with an input hole 40a for allowing the input electric wire 20 to enter the cavity 40b, and the support 50 is provided with an output hole 50a for allowing the output electric wire 30 to enter the cavity 40 b. By rotating the apparatus 10, the torsional force generated by the input electric wire 20 during rotation with the drum 40 is released with the rotation of the rotor 12, and the purpose of transmitting the electric signal from the input electric wire 20 to the output electric wire 30 is achieved.

In order to accommodate complex downhole conditions, a mechanism is required to provide the drum 40 with a wide range of speed control to meet the different raising and lowering speed requirements of downhole equipment.

Illustratively, in some embodiments, referring to fig. 8 and 9, the winch includes a first gear 60, a first handle 80, a second gear 70 and a second handle 90, wherein the first gear 60 is coaxially and fixedly connected with the drum 40 and rotatably connected with the bracket 50, the first handle 80 is fixed on the side of the first gear 60, the second gear 70 is in meshing transmission with the first gear 60, the number of teeth of the first gear 60 and the second gear 70 is different, the second gear 70 is rotatably connected with the bracket 50, and the second handle 90 is fixed on the side of the second gear 70. The gear ratio between the first gear 60 and the second gear 70 is not 1 due to the inconsistent tooth numbers of the first gear and the second gear, so that variable-speed transmission is realized, the rotation speed of the roller 40 is adjusted, the workload of personnel during operation is reduced, and the physical consumption is reduced.

It will be appreciated that a plurality of gears having different numbers of teeth may be provided to intermesh to achieve a wider range of speed control.

The various embodiments/implementations provided herein may be combined with each other without contradiction.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (13)

1. A rotation device for a winch for winding electric cables, characterized in that it comprises:

a rotor;

a stator rotationally coupled to the rotor;

at least one conductive elastic component used for being connected with an output wire, wherein the conductive elastic component is connected with the stator and comprises an elastic piece and an abutting piece;

at least one conductive rotating assembly used for being electrically connected with an input wire, wherein the conductive rotating assembly is arranged on the rotor to rotate along with the rotor, and the abutting part keeps conductive contact with the conductive rotating assembly under the action of elastic force exerted by the elastic part.

2. The rotating device according to claim 1, wherein the abutting member is a main conductive ball for maintaining conductive contact with the output electric wire, and the elastic member is a spring, the main conductive ball is arranged in a telescopic direction of the spring, and the main conductive ball is maintained in conductive rolling abutment with the conductive rotating assembly by an elastic force applied by the spring.

3. The rotary device as claimed in claim 2, wherein the conductive elastic member includes a mounting seat for maintaining conductive contact with the output electric wire, the mounting seat including a first contact surface and a second contact surface, the second contact surface being in contact with the spring, the first contact surface being located on a side of the second contact surface facing away from the spring, the first contact surface being in rolling contact with the main conductive ball.

4. The rotating device according to claim 3, wherein the mounting seat comprises a plurality of secondary conductive balls, the first abutting surface forms a recess, a ball groove is formed on the first abutting surface, and a plurality of secondary conductive balls are arranged in the ball groove and are in rolling contact with the primary conductive ball.

5. The rotating device according to claim 3, wherein the conductive elastic assembly includes a conductive adaptor and a mounting block for electrically connecting with the output electric wire, the mounting block is provided with a mounting cavity and a communication hole located on a side of the mounting block facing the conductive rotating assembly, the spring, the mounting seat and the main conductive ball are located in the mounting cavity, a part of the main conductive ball passes through the communication hole and contacts with the conductive rotating assembly, the mounting block is provided with a transfer hole which is opened along an axial direction of the rotor rotation direction and faces the output electric wire, and the conductive adaptor passes through the transfer hole and electrically contacts with the mounting seat.

6. The rotating device according to claim 5, wherein the conductive adaptor includes a conductive plate and a transfer ball, the transfer ball is located in the transfer hole, the conductive plate is covered on the transfer hole, one side of the conductive plate is in rolling contact with the transfer ball, the other side of the conductive plate is used for being connected with the output wire, and the transfer ball is in rolling contact with the mounting base.

7. The rotating device according to claim 1, wherein the stator includes a housing, the housing has a mounting opening, a receiving cavity defined by an enclosure of the housing communicates with an outside through the mounting opening, the rotor includes a central shaft, each of the conductive rotating assemblies is connected to a circumferential surface of the central shaft and arranged at intervals in an axial direction of the central shaft, at least a portion of the central shaft can pass through the mounting opening to enter the receiving cavity, and each of the conductive rotating assemblies is located in the receiving cavity.

8. The rotating device according to claim 7, wherein the central shaft is provided with a plurality of stepped surfaces along an axial direction, and each of the conductive rotating members is respectively attached to the corresponding stepped surface.

9. The rotating device according to claim 1, wherein the conductive rotating assembly includes a rotating disk fixedly connected to the rotor and a conductive member having a long rod shape, one end of the conductive member is fixedly connected to an axial surface of the rotating disk, the other end of the conductive member is adapted to be electrically connected to the input wire, and the rotating disk is in conductive contact with the corresponding conductive elastic assembly.

10. The rotating device as claimed in claim 9, wherein the rotating disc is provided with an avoiding groove axially penetrating through the rotating disc along a rotating direction of the rotating disc, and the conductive members of the other conductive rotating assemblies penetrate through the avoiding groove.

11. The rotating device according to claim 10, wherein the rotating disc comprises a conductive ring and an insulating ring, the insulating ring is provided with a rotor mounting hole, the rotor is inserted into the rotor mounting hole and fixedly connected with the insulating ring, the conductive ring is arranged around the insulating ring, the conductive ring is electrically connected with the conductive member, and a circumferential surface of the conductive ring is in conductive contact with the corresponding conductive elastic component.

12. The winch is characterized by comprising a support, a roller for winding an input wire and a rotating device according to any one of claims 1 to 11, wherein the roller is rotatably connected with the support, the roller and the support jointly enclose to form a cavity, the rotating device is arranged in the cavity, the rotating axis of the rotor is coaxial with the rotating axis of the roller, the stator is fixedly connected with the support, a wire inlet hole allowing the input wire to enter the cavity is formed in the circumferential surface of the roller, and a wire outlet hole allowing the output wire to enter the cavity is formed in the support.

13. The winch of claim 12, wherein the winch includes a first gear, a first handle, a second gear, and a second handle, the first gear is coaxially and fixedly connected to the drum and rotatably connected to the bracket, the first handle is fixed to a side of the first gear, the second gear is in meshing transmission with the first gear, the first gear and the second gear have different numbers of teeth, the second gear is rotatably connected to the bracket, and the second handle is fixed to a side of the second gear.

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