Electric clutch electric capstan

Abstract

The invention provides an electric clutch electric capstan which comprises an electric motor (1), a support (2), a winding drum (3), a planetary gear reducer (4) and a joint shaft (12), the planetary gear reducer (4) is provided with a state variable gear ring (16), a matching part (38) is arranged on the transverse end face (37) of the state variable gear ring (16), the matching part (38) adopts an axially-formed hole or groove and is correspondingly provided with a matching piece (17), and the matching piece (17) is connected with the planetary gear reducer (4). The fitting part (17) is connected with an elastic supporting structure (18), the elastic supporting structure (18) elastically pushes the fitting part (17) to the fitting part (38), and the joint shaft (12) is matched with the fitting part (17) to control the axial position of the fitting part (17), so that a combined state and a separated state are formed; according to the electric capstan, when the gear ring rotates to any angle, rotation of the joint shaft cannot be hindered, meanwhile, separation and reunion can be achieved, and the reliability and stability of the automation degree can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of winches, and more specifically, to an electric winch with an electric clutch. Background Art

[0002] Currently, there is an electric winch, which is generally used on vehicles, such as off-road vehicles, ATVs, boats, etc. Of course, in addition to being used on vehicles, it can also be used in other places where there is a need, that is, the application scenarios are relatively wide and suitable for many occasions with traction function requirements.

[0003] The structure of the electric winch mainly includes four parts, as Figure 1 shown, generally arranged axially in sequence. Specifically, it is an electric motor 1, a bracket 2 rotatably connected with a winch drum 3, and a planetary gear reducer 4. The electric motor 1 is connected to an output shaft, and the output shaft passes through the winch drum 3 and is in transmission connection with the input end of the planetary gear reducer 4. The output end of the planetary gear reducer 4 is in transmission connection with the winch drum 3. The planetary gear set included in the planetary gear reducer 4 can be multiple groups and arranged axially in sequence for transmission. In order to control the on-off of power, the planetary gear reducer 4 is also provided with a clutch structure. Its working principle is that when the clutch structure fixes the ring gear of the planetary gear reducer 4, the planetary gear reducer 4 cannot rotate idly and the power is in a connected state. When the clutch structure is released, the ring gear of the planetary gear reducer 4 can rotate freely, and the planetary gear reducer 4 becomes rotatable idly and the power is in a disconnected state. The working principle of the electric winch is to start the electric motor 1, the electric motor 1 drives the output shaft 5 to rotate, the output shaft 5 drives the planetary gear reducer 4 to rotate, the planetary gear reducer 4 decelerates and amplifies the torque and then drives the winch drum 3 to rotate, and the winch drum 3 pulls through a towing rope.

[0004] As can be seen from the above, the electric winch realizes whether the power of the planetary gear reducer 4 is transmitted through the clutch structure. For a long time, the clutch structure is as Figure 2 , 3As shown in the figure, it includes a manual engagement shaft 6 arranged circumferentially on the ring gear of the planetary gear set of the planetary gear reducer 4. The axial direction of the manual engagement shaft 6 is radially arranged and is rotatably connected to the housing of the planetary gear reducer 4. An operating handle 7 is provided at the upper end of the manual engagement shaft 6, and a mating half shaft is provided at the lower end of the manual engagement shaft 6. The mating half shaft includes a relief surface 8 located on the inner side and an outer peripheral mating surface 9 located on the outer side. Correspondingly, a plurality of axially protruding portions 10 arranged axially are provided circumferentially at the end of the ring gear. The axially protruding portions 10 can rotate together with the ring gear. The axially protruding portions 10 include concave arc mating surfaces 11 located on both sides. The combination principle is that when it is necessary to keep the ring gear stationary, that is, when the clutch structure needs to be in the engaged state, the manual engagement shaft 6 is rotated through the operating handle 7 so that the outer peripheral mating surface 9 rotates to cooperate with the concave arc mating surface 11 (engagement position), thereby preventing the manual engagement shaft 6 from rotating the ring gear. When it is necessary to release the fixation of the ring gear to achieve idling, that is, when the clutch structure needs to be in the disengaged state, the manual engagement shaft 6 is rotated through the operating handle 7 so that the outer peripheral mating surface 9 rotates away from the concave arc mating surface 11 and the relief surface 8 is used to avoid the axially protruding portions 10 (separation position), thereby preventing the manual engagement shaft 6 from obstructing the rotation of the ring gear, and the ring gear can idle, achieving the purpose of disconnecting the power.

[0005] However, in actual use, the following situation exists. The matching of the mating half shaft and the axially protruding portions 10 is limited by the position of the axially protruding portions 10. Specifically, since the axially protruding portions 10 need to rotate together with the ring gear, when the axially protruding portions 10 rotate to a region where the mating half shaft is located between two adjacent axially protruding portions 10, the mating half shaft can rotate very smoothly, thereby realizing the switching between the engagement position and the separation position. However, when the ring gear rotates to a position where the mating half shaft and the axially protruding portions 10 have an axial overlap, then when it is necessary to switch the clutch structure from the separation position to the engagement position, due to the influence of the axial overlap, the mating half shaft is blocked by the end face of the axially protruding portions 10 and cannot rotate effectively, resulting in the outer peripheral mating surface 9 being unable to rotate to the position where it cooperates with the concave arc mating surface 11, that is, unable to switch to the engagement position. At this time, the user needs to make adjustments to control the ring gear to continue rotating a certain angle, thereby avoiding the overlapping position of the mating half shaft and the axially protruding portions 10 and making the mating half shaft located in the region between two adjacent axially protruding portions 10, so that the mating half shaft can rotate smoothly again. Although the aforementioned situation is occasional and users of electric winches also have relevant handling experience, it has not been effectively solved for a long time. The reasons may be that it will increase costs, cause the structure to be complicated, change the operating habits, and pose stability risks brought about by the complicated structure. Therefore, it is difficult to make changes on the existing basis.

[0006] With the development trend of electrification, an electric winch with an electric clutch has been proposed in the prior art. Its main idea is to drive the original manually operated manual engagement shaft 6 by adding an electric device. For example, an electric clutch type winch disclosed in Chinese Patent Application CN106966314A. However, when encountering the above-mentioned situation where it cannot rotate, it has not been effectively solved. Moreover, the electrification transformation is rather disadvantageous compared to manual operation, that is, the problem is further amplified. The reason is that in the electric case, it is impossible to timely know that the situation of being unable to rotate has occurred, so it cannot be corrected in time. While in the manual case, one can rely on the sense of touch to timely discover the situation of being unable to rotate and make adjustments. Therefore, in the case of electrification transformation, the applicant believes that the adverse impact caused by the situation of being unable to rotate becomes more prominent, which is a major problem not recognized in the prior art.

[0007] Therefore, the applicant will propose an electric winch with an electric clutch, which will not hinder the rotation of the engagement shaft at any angle of the gear ring rotation, and at the same time can also achieve clutch, improving the reliability and stability of the automation level. Summary of the Invention

[0008] The present invention provides an electric winch with an electric clutch, which will not hinder the rotation of the engagement shaft at any angle of the gear ring rotation, and at the same time can also achieve clutch, which is beneficial to improving the reliability and stability of the automation level.

[0009] To achieve the above object, the embodiments of the present invention adopt the following technical solutions:

[0010] An electric winch with an electric clutch includes an electric motor, a bracket, a winch drum and a planetary gear reducer, and further includes an electrically rotatable engagement shaft. The planetary gear reducer is provided with a state-variable gear ring. A mating portion is provided on the transverse end face of the state-variable gear ring. The mating portion is an axially opened hole or groove. Correspondingly, a mating member capable of reciprocating axially is provided. The mating member is connected with an elastic support structure, and the elastic support structure elastically presses the mating member towards the mating portion. The engagement shaft cooperates with the mating member to control the axial position of the mating member, thereby forming a combined state and a separated state. When the combined state is formed, the engagement shaft rotates to make way for the mating member, and the mating member moves towards the mating portion under elastic support for cooperation. When the mating member is aligned with the mating portion, the mating member directly inserts into the mating portion to achieve cooperation to form a combined state. When the mating member is not aligned with the mating portion, the front end of the mating member elastically abuts against the transverse end face and automatically inserts into the mating portion as the state-variable gear ring rotates to achieve cooperation to form a combined state. When the separated state is formed, the engagement shaft rotates to drive the mating member to disengage from the mating portion in the reverse direction to form a separated state.

[0011] In some embodiments, a cam is provided at the lower end of the engaging shaft, and the fitting member is provided with a protruding portion or a groove, and the protruding portion or the groove cooperates with the cam to control the axial position of the fitting member.

[0012] In some embodiments, the engaging portion is a groove axially formed, and the groove is provided with a radial opening. The engaging shaft is located outside the opening. When the fitting member is inserted into the groove, the portion of the fitting member protruding from the opening serves as the protruding portion. The cam is located on the end face side of the protruding portion, and the cam abuts against the end face in the axial direction of the fitting member. When the cam rotates, the axial position of the fitting member is controlled through the end face.

[0013] In some embodiments, the fitting member is provided with a circumferentially protruding protruding portion or a groove on the circumferential wall of the fitting member. The engaging shaft is provided between the protruding portion and the transverse end face or above the groove. The protruding portion or the groove cooperates with the cam to control the axial position of the fitting member.

[0014] In some embodiments, a mechanical limit post is further included. The engaging shaft is provided with a limit groove that cooperates with the mechanical limit post. The limit groove is arranged transversely along the engaging shaft. The mechanical limit post limits the rotation range of the engaging shaft between the position corresponding to the engaged state and the position corresponding to the separated state, and the rotation range includes the position corresponding to the engaged state and the position corresponding to the separated state.

[0015] In some embodiments, a first position sensor and a second position sensor are further included. The first position sensor corresponds to the position of the engaged state, and the second position sensor corresponds to the position of the separated state. The engaging shaft is provided with a circumferential engaging portion that rotates synchronously with the engaging shaft. When at the position of the engaged state, the circumferential engaging portion rotates to the first position sensor and triggers the first position sensor to emit a first signal. When at the position of the separated state, the circumferential engaging portion rotates reversely to the second position sensor and triggers the second position sensor to emit a second signal. Both the first signal and the second signal are used by the control unit to control the engaging shaft to stop rotating. A user operation unit is further included. The user controls the forward / backward rotation of the electrically rotating engaging shaft through the user operation unit. When the user presses and releases the button of the user operation unit once, the electrically rotating engaging shaft rotates continuously until the circumferential engaging portion triggers the first position sensor or the second position sensor and then stops. And / or, when the user continuously presses and does not release the button of the user operation unit, the electrically rotating engaging shaft rotates continuously until the circumferential engaging portion triggers the first position sensor or the second position sensor and then stops. And / or, when the user presses the button of the user operation unit, the electrically rotating engaging shaft rotates electrically, and when not pressing, the engaging shaft stops immediately.

[0016] In some embodiments, the planetary gear reducer includes a gearbox housing, the gearbox housing is provided with a guide hole, a spring is provided in the guide hole, a mating piece is movably sleeved in the guide hole, and the spring provides elastic support for the mating piece.

[0017] In some embodiments, the planetary gear reducer includes a primary planetary gear set and a secondary planetary gear set that are sequentially connected in transmission, the primary planetary gear set includes a primary ring gear, the secondary planetary gear set includes a secondary ring gear, the primary ring gear is integrated in the gearbox housing, and the secondary ring gear (31) serves as a state-variable ring gear.

[0018] In some embodiments, there are a plurality of matching portions, which are evenly distributed along the circumference of the transverse end surface.

[0019] In some embodiments, the electric motor, the bracket and the planetary gear reducer are arranged in sequence along the axial direction, the electric motor is connected to the output shaft, the output shaft passes through the winch drum and is transmission-connected to the input end of the planetary gear reducer, and the coupling shaft is rotationally connected to the circumferential housing of the planetary gear reducer.

[0020] After adopting the above structure, compared with the prior art, the present invention has the following advantages:

[0021] The electrically rotating coupling shaft disclosed in the present invention is used to cooperate with the mating piece in the axial direction to control the axial position of the mating piece, and the elastic support structure elastically pushes the mating piece toward the mating part, that is, the force of the axial movement of the mating piece is provided by the elastic support structure, and the coupling shaft is only used to control the axial position of the mating piece, and is not used to directly drive the mating piece to move axially back and forth. Specifically, when forming a combined state, the coupling shaft rotates to make way for the mating piece, and the mating piece moves toward the mating part under elastic support to cooperate. When the mating piece is aligned with the mating part, the mating piece is directly inserted into the mating part to achieve cooperation to form a combined state. When the mating piece is not aligned with the mating part, the front end of the mating piece elastically presses on the lateral end surface and is automatically inserted into the mating part as the state-variable gear ring rotates to achieve cooperation to form a combined state. When forming a separated state, the coupling shaft rotates to drive the mating piece to reversely disengage from the mating part to form a separated state. Therefore, when the state-variable gear ring rotates to any angle, the rotation of the coupling shaft will not be hindered. Although there is a situation where the mating piece is not aligned with the mating part, due to the use of an elastic support structure, the mating piece is elastically pressed against the mating part, that is, the mating piece can adaptively press against the lateral end surface, and as the state-variable gear ring rotates, it is automatically inserted into the mating part to achieve mating to form a combined state, that is, the combined state can still be formed without the need for manual intervention by the user. As long as the state-variable gear ring rotates slightly, the mating piece can be automatically inserted into the mating part.

[0022] As can be seen from the above, the engaging shaft controls the axial position of the mating part by rotation, and the rotation of the engaging shaft serves the following purposes: when forming the engaged state, it serves to give way to the mating part, and when forming the separated state, it serves to drive the mating part to disengage from the mating portion in the reverse direction. The mating of the mating part and the mating portion is driven by the elastic support structure. Therefore, no matter what angle the state-variable gear ring rotates to, it will not hinder the rotation of the engaging shaft, effectively avoiding the situation where the engaging shaft cannot rotate as pointed out in the prior art. At the same time, the mating part and the mating portion can achieve adaptive mating, and the engaging shaft rotates to drive the mating part to disengage from the mating portion in the reverse direction, that is, the clutch can be realized. Therefore, the present disclosure is conducive to improving the reliability and stability of the automation degree, enabling the electric winch with an electric clutch designed based on the electrically rotating engaging shaft to be implemented. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 FIG. is a perspective view of the current electric winch.

[0024] Figure 2 FIG. is a perspective view of the current clutch structure.

[0025] Figure 3 FIG. is a perspective view of the current manual engaging shaft.

[0026] Figure 4 FIG. is a schematic diagram showing the axial position of a mating part controlled by a cam.

[0027] Figure 5 FIG. is another schematic diagram showing the axial position of a mating part controlled by a cam.

[0028] Figure 6 FIG. is a schematic diagram showing the axial position of a mating part controlled by a swing rod.

[0029] Figure 7 FIG. is a schematic diagram showing the mating of a mating part controlled by a swing rod inserted into a mating portion.

[0030] Figure 8 FIG. is a perspective view of an electric winch with an electric clutch.

[0031] Figure 9 FIG. is a perspective view of an electric winch with an electric clutch after removing the gearbox housing.

[0032] Figure 10 FIG. is a perspective view showing the mating situation at the state-variable gear ring.

[0033] Figure 11 FIG. is a perspective view of a state-variable gear ring.

[0034] Figure 12 FIG. is a perspective view of a gearbox housing.

[0035] Figure 13 A perspective view from below shows a three-dimensional schematic diagram of the engagement shaft cooperating with the mating part.

[0036] Figure 14 A top view shows the groove on the upper wall of the mating part cooperating with the cam at the lower end of the engagement shaft.

[0037] Figure 15 A perspective view shows another electric winch with an electric clutch.

[0038] Figure 16 A perspective view shows another gearbox housing.

[0039] Figure 17 A perspective view shows a remote control.

[0040] Explanation of reference numerals: 1 - electric motor, 2 - bracket, 3 - winch drum, 4 - planetary gear reducer, 5 - output shaft, 6 - manual engagement shaft, 7 - operating handle, 8 - avoidance plane, 9 - outer peripheral mating surface, 10 - axial protrusion, 11 - concave arc mating surface, 12 - engagement shaft, 13 - electric drive device, 14 - electric motor, 15 - reducer, 16 - state variable gear ring, 17 - mating part, 18 - elastic support structure, 19 - cam, 20 - protruding part, 21 - end face, 22 - mechanical limit post, 23 - limit groove, 24 - first position sensor, 25 - second position sensor, 26 - circumferential mating part, 27 - gearbox housing, 28 - guide hole, 29 - spring, 30 - first-stage gear ring, 31 - second-stage gear ring, 32 - circumferential housing, 33 - mating protrusion, 34 - swing rod, 35 - end cover, 36 - mounting bracket, 37 - transverse end face, 38 - mating part, 39 - groove, 40 - first-stage sun gear, 41 - first-stage planetary carrier, 42 - first-stage planetary gear, 43 - pillar, 44 - combination button, 45 - separation button, 46 - user operation unit. Detailed implementation manners

[0041] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles defined in the following description can be applied to other implementation schemes, variant schemes, improvement schemes, equivalent schemes, and other technical schemes that do not depart from the spirit and scope of the present invention.

[0042] Those skilled in the art should understand that, in the disclosure of the present invention, the orientation or position relationship indicated by the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0043] The present invention provides an electric winch with electric clutch, including an electric motor 1, a bracket 2, a hoisting drum 3 and a planetary gear reducer 4, and also includes an electrically rotatable coupling shaft 12, the planetary gear reducer 4 is provided with a state-variable gear ring 16, a matching portion 38 is provided on the transverse end face 37 of the state-variable gear ring 16, the matching portion 38 adopts an axially opened hole or groove, and correspondingly, a matching piece 17 capable of axial reciprocating movement is provided, the matching piece 17 is connected to an elastic support structure 18, the elastic support structure 18 elastically pushes the matching piece 17 toward the matching portion 38, the coupling shaft 12 cooperates with the matching piece 17 to control the axial position of the matching piece 17, thereby forming When the engaging state is formed, the engaging shaft 12 rotates to make way for the mating piece 17, and the mating piece 17 moves toward the mating portion 38 under elastic support to engage. When the mating piece 17 is aligned with the mating portion 38, the mating piece 17 is directly inserted into the mating portion 38 to achieve engagement to form a combined state. When the mating piece 17 is not aligned with the mating portion 38, the front end of the mating piece 17 elastically presses against the lateral end surface 37 and is automatically inserted into the mating portion 38 as the state-variable gear ring 16 rotates to achieve engagement to form a combined state. When the separated state is formed, the engaging shaft 12 rotates to drive the mating piece 17 to reversely disengage from the mating portion 38 to form a separated state.

[0044] In some embodiments, a cam 19 is provided at the lower end of the coupling shaft 12, and the mating piece 17 is provided with a protrusion 20 or a groove 39, which cooperates with the cam 19 to control the axial position of the mating piece 17. In this way, when a coupled state is formed, the coupling shaft 12 drives the cam 19 to rotate to clear the protrusion 20, and then the mating piece 17 will move toward the mating portion 38 for engagement under elastic support. When the mating piece 17 is aligned with the mating portion 38, the mating piece 17 is directly inserted into the mating portion 38 to achieve engagement to form a coupled state. When the mating piece 17 is not aligned with the mating portion 38, the front end of the mating piece 17 elastically presses against the lateral end face 37 and is automatically inserted into the mating portion 38 as the state-variable gear ring 16 rotates to achieve engagement to form a coupled state. When a separated state is formed, the coupling shaft 12 drives the cam 19 to rotate to drive the mating piece 17 to reversely disengage from the mating portion 38 to form a separated state.

[0045] In some embodiments,Figure 4 As shown, the mating portion 38 is a groove axially formed, the groove has a radial opening, the engaging shaft 12 is located outside the opening. When the mating member 17 is inserted into the groove, the portion of the mating member 17 protruding from the opening serves as the protruding portion 20. The cam 19 is located on the side of the end face 21 of the protruding portion 20, and the cam 19 is in abutting cooperation with the end face 21 in the axial direction of the mating member 17. When the cam 19 rotates, the axial position of the mating member 17 is controlled through the end face 21. With such a design, on the one hand, the structure is simple and compact. On the other hand, the engaging shaft 12 is located outside the opening, which is beneficial for the engaging shaft 12 to be arranged close to the bracket 2 side, and is beneficial for the control of the axial dimension of the electric winch.

[0046] In some embodiments, as Figure 5 shown, the mating member 17 is provided with a circumferentially protruding protruding portion 20, and the engaging shaft 12 is arranged between the protruding portion 20 and the transverse end face 37. The protruding portion 20 cooperates with the cam 19 to control the axial position of the mating member 17. In this way, on the one hand, the radial position of the engaging shaft 12 on the electric winch does not need to be limited by the circumferential dimension of the state-variable gear ring 16. On the other hand, it is beneficial for the control of the radial dimension of the electric winch.

[0047] In some embodiments, as Figure 14 shown, the mating member 17 is provided with a groove 39 recessed in the peripheral wall of the mating member 17. The groove 39 cooperates with the cam 19 to control the axial position of the mating member 17. In this way, the radial dimension can be smaller, which is beneficial for the control of the radial dimension of the electric winch.

[0048] In some embodiments, as Figure 6 、 7 shown, the mating member 17 is provided with a circumferentially protruding mating projection 33, the engaging shaft 12 is connected with a swing rod 34, and the swing rod 34 is arranged between the mating projection 33 and the transverse end face 37. When the swing rod 34 swings towards the transverse end face 37 side, the swing rod 34 gives way to the mating projection 33, and the mating member 17 can be elastically pushed towards the mating portion 38 by the elastic support structure 18. When the swing rod 34 swings in the reverse direction, the swing rod 34 drives the mating member 17 to disengage from the mating portion 38 in the reverse direction through the mating projection 33.

[0049] Since it is impossible to list all, any structure in which the engaging shaft 12 cooperates with the mating member 17 to control the axial position of the mating member 17 and is applicable to the present disclosure can be used. Specifically, when the combined state is formed, the engaging shaft 12 rotates to give way to the mating member 17, and the mating member 17 moves and mates with the mating portion 38 under elastic support. When the separated state is formed, the engaging shaft 12 rotates to drive the mating member 17 to disengage from the mating portion 38 in the reverse direction to form the separated state.

[0050] In this example, as Figure 8 、 9As shown, the electric motor 1, the bracket 2, and the planetary gear reducer 4 are arranged axially in sequence. The electric motor 1 is connected to the output shaft 5. The output shaft 5 passes through the hoisting drum 3 and is drivingly connected to the input end of the planetary gear reducer 4. The engaging shaft 12 is rotatably connected to the circumferential housing 32 of the planetary gear reducer 4. In this example, the engaging shaft 12 is rotatably connected to the gearbox housing 27 of the planetary gear reducer 4.

[0051] The engaging shaft 12 is electrically driven by an electric driving device 13. There can be many types of the electric driving device 13, and any electric driving device 13 that can electrically drive the engaging shaft 12 to rotate can be used. In this example, the electric driving device 13 includes an electric motor 14 and a reducer 15. The electric motor 14 drives the engaging shaft 12 to rotate through the reducer 15. The reducer 15 can be a gear reducer 15, a worm and worm gear reducer 15, etc.

[0052] In some embodiments, such as Figure 8 、 9 As shown in FIG. 10, it further includes a mechanical limit post 22. The engaging shaft 12 is provided with a limit groove 23 that cooperates with the mechanical limit post 22. The limit groove 23 is arranged transversely along the engaging shaft 12. The mechanical limit post 22 limits the rotation range of the engaging shaft 12 between the position corresponding to the engaged state and the position corresponding to the separated state, and this rotation range includes the position corresponding to the engaged state and the position corresponding to the separated state. In this way, the switching between the position corresponding to the engaged state and the position corresponding to the separated state is realized through mechanical limiting.

[0053] In some embodiments, such as Figure 8 、 13 As shown, a sensor can also be used to control the rotation position of the engaging shaft 12. Specifically, it further includes a first position sensor 24 and a second position sensor 25. The first position sensor 24 corresponds to the position of the engaged state, and the second position sensor 25 corresponds to the position of the separated state. The engaging shaft 12 is provided with a circumferential mating portion 26, and the circumferential mating portion 26 rotates synchronously with the engaging shaft 12. When in the position of the engaged state, the circumferential mating portion 26 rotates to the first position sensor 24 and triggers the first position sensor 24 to send out a first signal. When in the position of the separated state, the circumferential mating portion 26 rotates reversely to the second position sensor 25 and triggers the second position sensor 25 to send out a second signal. Both the first signal and the second signal are used by the control unit to control the engaging shaft 12 to stop rotating. The first position sensor 24 and the second position sensor 25 are, for example, microswitches.

[0054] In some embodiments, such as Figure 17As shown, it further includes a user operation unit 46, which can be a remote control, a touch screen, a wire controller, etc. There can be two buttons on the user operation unit 46, namely a combination button 44 and a separation button 45, which can also be called a forward rotation button and a reverse rotation button. The combination button 44 and the separation button 45 can be touch-type or mechanical.

[0055] The user can control the electric forward / reverse rotation of the engagement shaft 12 of the electric rotation through the two buttons of the user operation unit 46. For example, taking the remote control as an example, a remote control signal receiver is provided on the winch. After receiving the signal from the remote control, the remote control signal receiver controls the electric drive device 13 of the engagement shaft 12. The electric motor 14 in the electric drive device 13 can be controlled to rotate forward / reverse. How to design the remote control circuit to realize the control of the electric motor 14 can adopt the existing technology and will not be elaborated here. Similarly, using a wire controller also enables the electric motor 14 to be controlled to rotate forward / reverse, but only uses a cable to transmit the signal sent by the user through the user operation unit 46.

[0056] Specific solutions can be various. For example, when the user presses and releases the button on the user operation unit 46 once, the engagement shaft 12 of the electric rotation will rotate continuously until the circumferential engagement portion 26 triggers the first position sensor 24 or the second position sensor 25 and then stops. After such a design, the user only needs to press the button once without continuous operation, which is convenient for the user and improves the use efficiency.

[0057] For another example, when the user continuously presses and does not release the button on the user operation unit 46, the engagement shaft 12 of the electric rotation will rotate continuously until the circumferential engagement portion 26 triggers the first position sensor 24 or the second position sensor 25 and then stops.

[0058] For another example, when the user presses the button on the user operation unit 46, the engagement shaft 12 of the electric rotation will rotate electrically, and when not pressed, the engagement shaft 12 will stop immediately.

[0059] Of course, no matter which one it is, if the circumferential engagement portion 26 has triggered the first position sensor 24 or the second position sensor 25, then even if the button is pressed again, it will not rotate further, and only by pressing the button in the opposite direction will it rotate in the reverse direction.

[0060] The above mechanical limit and sensor limit can be adopted independently or jointly. When adopted jointly, the mechanical limit can be used as a further limit guarantee, so that the rotation of the engagement shaft 12 will never deviate from the design range, which is beneficial to reliability and safety.

[0061] Such as Figure 8 、 13As shown, the electric drive device 13, the first position sensor 24 and the second position sensor 25 are all supported on the gear box housing 27 by a mounting frame 36, and the mounting frame 36 is an L-shaped support frame.

[0062] In some embodiments, Figure 8 , 12 As shown, the planetary gear reducer 4 includes a gear box housing 27, the gear box housing 27 is provided with a guide hole 28, a spring 29 is provided in the guide hole 28, the matching piece 17 is movably sleeved in the guide hole 28, and the spring 29 provides elastic support for the matching piece 17. This has a compact structure and good guidance for the reciprocating motion of the matching piece 17.

[0063] In some embodiments, Figure 9 , 10 As shown in 12, the planetary gear reducer 4 includes a primary planetary gear set 42 and a secondary planetary gear set which are sequentially connected in transmission. The primary planetary gear set 42 includes a primary ring gear 30, and the secondary planetary gear set includes a secondary ring gear 31. The primary ring gear 30 is integrated in the gear box housing 27, and the secondary ring gear 31 serves as a state-variable ring gear 16. This has a compact structure and a high degree of integration.

[0064] In this example, since the tail portion is narrow, in order to enable the first-stage gear ring 30 to be integrated in the gearbox housing 27 and avoid the manufacturing difficulties brought about by manufacturing the gearbox housing 27 with a long axial length, the present disclosure also includes a tail cover 35, which is connected to the gearbox housing 27.

[0065] In some embodiments, Figure 15 , 16 As shown, the mounting frame 36 adopts a mounting plate, and the gear box housing 27 is provided with a plurality of pillars 43, three pillars 43 in this example, which are distributed in a triangular stable support structure. Thus, on the one hand, the supporting strength and stability of the mounting frame 36 are better, and on the other hand, a structural scheme in which all the pillars 43 are arranged on the gear box housing 27, such as one-piece aluminum die-casting, can be adopted, thereby eliminating the need to screw on the tail cover 35 to install the mounting frame 36, and at the same time will not affect the gear structure in the gear box housing 27, thereby improving the convenience of production and manufacturing. Figure 8 In the scheme shown in the figure, the purpose of connecting the screws to the tail cover 35 is to avoid the screws from affecting the gear structure in the gear box housing 27. Figure 15 After implementing the solution, the aforementioned problems will no longer exist.

[0066] like Figure 16 As shown, the gearbox housing 27 is integrated with three pillars 43, and the gearbox housing 27 is also integrated with a primary gear ring 30. The gearbox housing 27 can be manufactured by an integrated die-casting process, so as to facilitate production.

[0067] The transmission principle is consistent with the prior art, mainly as follows: the electric motor 1 drives the output shaft 5, the output shaft 5 is connected to the primary sun gear 40 of the primary planetary gear 42 group, the primary sun gear 40 drives the primary planetary gear 42 to rotate, if the primary ring gear 30 is fixed, the primary planetary gear 42 rotates to drive the primary planet carrier 41 to rotate, and the primary planet carrier 41 is connected to the secondary sun gear of the secondary planetary gear group, the primary planet carrier 41 rotates to drive the secondary sun gear to rotate, if the secondary ring gear 31 is fixed, the secondary sun gear will drive the secondary planet carrier to rotate by driving the secondary planetary gear, and so on, if there are four sets of planetary gear sets, the fourth-stage planet carrier of the fourth set of planetary gear sets is connected to the winch drum 3, so as to drive the winch drum 3 to rotate through four-stage reduction. In the example of the present disclosure, the secondary ring gear 31 has two states, the first is a fixed state, that is, a combined state, and power can be transmitted, and the second is a rotatable state, that is, a separated state, and the power of the electric motor 1 cannot be finally transmitted to the winch drum 3, thereby achieving the purpose of clutch.

[0068] In some embodiments, Figure 10 , 11 As shown, there are multiple matching parts 38, which are evenly distributed along the circumference of the transverse end surface 37. In this way, when the matching piece 17 is not aligned with the matching part 38, if there are multiple matching parts 38, the state variable gear ring 16 slightly rotates the angle, and the front end of the matching piece 17 can be automatically inserted into the matching part 38 to achieve matching and form a combined state, which is conducive to efficient clutch combination.

[0069] When understanding the present invention, if necessary, the above structure can refer to other embodiments / appendices. Figure 1 And understand, no further elaboration here.

[0070] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any changes or substitutions that can be thought of by any person skilled in the art within the technical scope disclosed in the present disclosure should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. An electric winch with an electric clutch, comprising an electric motor (1), a bracket (2), a hoisting drum (3) and a planetary gear reducer (4), characterized in that, It further includes an axially rotatable engagement shaft (12). The planetary gear reducer (4) is provided with a state-variable ring gear (16). A mating portion (38) is provided on the lateral end face (37) of the state-variable ring gear (16). The mating portion (38) is an axially opened hole or groove. Correspondingly, a mating member (17) capable of axially reciprocating movement is provided. The mating member (17) is connected with an elastic support structure (18). The elastic support structure (18) elastically presses the mating member (17) towards the mating portion (38). The engagement shaft (12) cooperates with the mating member (17) to control the axial position of the mating member (17), thereby forming an engaged state and a disengaged state. When forming the engaged state, the engagement shaft (12) rotates to make way for the mating member (17). The mating member (17) moves towards the mating portion (38) under elastic support for cooperation. When the mating member (17) aligns with the mating portion (38), the mating member (17) directly inserts into the mating portion (38) to achieve cooperation and form the engaged state. When the mating member (17) does not align with the mating portion (38), the front end of the mating member (17) elastically abuts against the lateral end face (37) and automatically inserts into the mating portion (38) as the state-variable ring gear (16) rotates to achieve cooperation and form the engaged state. When forming the disengaged state, the engagement shaft (12) rotates to drive the mating member (17) to disengage from the mating portion (38) in the reverse direction to form the disengaged state.

2. The electric winch with an electric clutch according to claim 1, characterized in that, A cam (19) is provided at the lower end of the engagement shaft (12). The mating member (17) is provided with a protruding portion (20) or a groove (39). The protruding portion (20) or the groove (39) cooperates with the cam (19) to control the axial position of the mating member (17).

3. The electric winch with an electric clutch according to claim 2, characterized in that, The mating portion (38) is an axially opened groove. The groove is provided with a radial opening. The engagement shaft (12) is located outside the opening. When the mating member (17) is inserted into the groove, the portion of the mating member (17) protruding from the opening serves as the protruding portion (20). The cam (19) is located on the side of the end face (21) of the protruding portion (20). The cam (19) abuts and cooperates with the end face (21) in the axial direction of the mating member (17). When the cam (19) rotates, it controls the axial position of the mating member (17) through the end face (21).

4. The electric winch with an electric clutch according to claim 2, characterized in that, The mating member (17) is provided with a circumferentially protruding protruding portion (20) or a groove (39) in a groove (39) on the circumferential wall of the mating member (17). The engagement shaft (12) is arranged between the protruding portion (20) and the lateral end face (37) or the engagement shaft (12) is arranged above the groove (39). The protruding portion (20) or the groove (39) cooperates with the cam (19) to control the axial position of the mating member (17).

5. The electric winch with an electric clutch according to claim 1, characterized in that, It further includes a mechanical limit post (22). The engagement shaft (12) is provided with a limit groove (23) that cooperates with the mechanical limit post (22). The limit groove (23) is arranged horizontally along the engagement shaft (12). The mechanical limit post (22) limits the rotation range of the engagement shaft (12) between the position corresponding to the engaged state and the position corresponding to the disengaged state, and this rotation range includes the position corresponding to the engaged state and the position corresponding to the disengaged state.

6. The electric winch with an electric clutch according to claim 1 or 5, characterized in that The device further comprises a first position sensor (24) and a second position sensor (25), wherein the first position sensor (24) corresponds to a position of a coupled state, and the second position sensor (25) corresponds to a position of a separated state, wherein the coupling shaft (12) is provided with a circumferential matching portion (26), and the circumferential matching portion (26) rotates synchronously with the coupling shaft (12), and when in the coupled state, the circumferential matching portion (26) rotates to the first position sensor (24) and triggers the first position sensor (24) to send a first signal, and when in the separated state, the circumferential matching portion (26) rotates in the opposite direction to the second position sensor (25) and triggers the second position sensor (25) to send a second signal, and the first signal and the second signal are both used by the control unit to control the coupling shaft (12) to stop rotating; and the device further comprises a user operation unit (46) for controlling the coupling shaft (12) to stop rotating. The user controls the electric forward / reverse rotation of the electrically rotatable coupling shaft (12) through the user operating unit (46). When the user presses the button of the user operating unit (46) once and releases it, the electrically rotatable coupling shaft (12) continuously rotates until the circumferential matching portion (26) triggers the first position sensor (24) or the second position sensor (25) and stops. And / or, when the user continues to press the button of the user operating unit (46) and does not release it, the electrically rotatable coupling shaft (12) continuously rotates until the circumferential matching portion (26) triggers the first position sensor (24) or the second position sensor (25) and stops. And / or, when the user presses the button of the user operating unit (46), the electrically rotatable coupling shaft (12) rotates electrically, and when the user does not press the button, the coupling shaft (12) stops immediately.

7. The electric winch with an electric clutch according to claim 1 or 2 or 3 or 4 or 5, characterized in that, The planetary gear reducer (4) comprises a gear box housing (27), the gear box housing (27) is provided with a guide hole (28), a spring (29) is provided in the guide hole (28), a matching piece (17) is movably sleeved in the guide hole (28), and the spring (29) provides elastic support for the matching piece (17).

8. The electric winch with an electric clutch according to claim 7, characterized in that, The planetary gear reducer (4) comprises a primary planetary gear set and a secondary planetary gear set which are sequentially connected in transmission, the primary planetary gear set comprises a primary ring gear (30), the secondary planetary gear set comprises a secondary ring gear (31), the primary ring gear (30) is integrated in a gearbox housing (27), and the secondary ring gear (31) serves as a state-variable ring gear (16).

9. The electric winch with an electric clutch according to claim 1, characterized in that, There are a plurality of matching portions (38) which are evenly distributed along the circumference of the transverse end surface (37).

10. The electric winch with an electric clutch according to claim 1, characterized in that, The electric motor (1), the bracket (2) and the planetary gear reducer (4) are arranged axially in sequence. The electric motor (1) is connected to the output shaft (5). The output shaft (5) passes through the hoisting drum (3) and is in driving connection with the input end of the planetary gear reducer (4). The engaging shaft (12) is rotatably connected to the circumferential housing (32) of the planetary gear reducer (4); the gearbox housing (27) is integrally provided with a mounting bracket (36), or further includes an end cover 35. The end cover 35 is connected to the gearbox housing 27. The mounting bracket (36) is connected to the end cover 35 and extends towards the side of the gearbox housing (27); the said mounting bracket (36) mounts an electric driving device for rotating the engaging shaft (12).

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