Output shaft reversing mechanism and gearbox

Abstract

The invention relates to the technical field of gear boxes, and discloses an output shaft reversing mechanism and a gear box. The output shaft reversing mechanism comprises a connecting shaft which is rotationally provided with a first gear and a second gear, and the rotating directions of the first gear and the second gear are opposite; one end of the first output shaft is used for being connected with a power source and connected with the connecting shaft in a matched mode so that torque of the power source can be transmitted to the first gear and the second gear. The second output shaft is connected with the connecting shaft in a matched mode through a transmission assembly so that the torque of the power source can be transmitted to the second output shaft. The gear shifting assembly is connected with the connecting shaft through a coupling piece; the gear shifting assembly can move between the first gear and the second gear in the axial direction of the connecting shaft so that the gear shifting assembly can be connected with the first gear or the second gear. The gearbox comprises an output shaft reversing mechanism. According to the technical scheme, the technical problems that a gear box in the related technology is bloated in structure and large in size can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of gearboxes, and in particular to an output shaft reversing mechanism and a gearbox. Background Art

[0002] A gearbox is a mechanical transmission device, and its core consists of a set of meshing gears and a sealed housing. Its main function is to transmit power through the meshing of gears, achieving speed regulation, torque conversion, and control of the direction of motion.

[0003] Currently, some gearboxes are provided with an output shaft reversing mechanism to control the forward and reverse rotation of the output shaft of the gearbox. However, the structure of the output shaft reversing mechanism is complex and large in size, resulting in a bloated and large-sized gearbox structure. Summary of the Invention

[0004] The present application discloses an output shaft reversing mechanism and a gearbox to solve the technical problems of bloated structure and large size existing in the gearboxes in the related art.

[0005] To solve the above problems, the present invention adopts the following technical solutions: In a first aspect, the present application discloses an output shaft reversing mechanism, including: A connecting shaft, on which a first gear and a second gear are rotatably arranged, and the rotation directions of the first gear and the second gear are opposite; A first output shaft, one end of which is used to connect to a power source and is cooperatively connected with the connecting shaft to transmit the torque of the power source to the first gear and the second gear; A second output shaft, which is cooperatively connected with the connecting shaft through a transmission component to transmit the torque of the power source to the second output shaft; A shifting component, which is connected to the connecting shaft through a coupling member; the shifting component can move axially along the connecting shaft between the first gear and the second gear to connect the shifting component to the first gear or the second gear; When the shifting component is connected to one of the first gear and the second gear, the rotation directions of the first output shaft and the second output shaft are the same; when the shifting component is connected to the other of the first gear and the second gear, the rotation directions of the first output shaft and the second output shaft are opposite.

[0006] In some solutions, the coupling member is slidably connected to the connecting shaft axially along the connecting shaft and cannot rotate circumferentially relative to the connecting shaft; the first gear is connected with a first external spline through a first elastic member, the second gear is connected with a second external spline through a second elastic member, and both the first external spline and the second external spline can move radially along the connecting shaft; When the coupling contacts the first external spline, the first external spline moves away from the axial direction of the first gear and connects to the shift assembly; when the coupling contacts the second external spline, the second external spline moves away from the axial direction of the second gear and connects to the shift assembly.

[0007] In some embodiments, the coupling includes a connecting portion and two stop portions; the two stop portions are connected to both axial ends of the connecting portion, and the two stop portions are respectively used to contact the first external spline and the second external spline to move the first external spline and the second external spline.

[0008] In some solutions, both stop portions can be forced to separate from the connecting portion so that the stop portions move along the axial direction of the connecting portion; The coupling passes through a dead point position during the process of moving toward the first gear or the second gear. When the coupling is at the dead point position, the shift assembly overlaps with the radial projection of the first gear or the second gear along the connecting shaft; when the coupling passes through the dead point position and moves toward the first gear or the second gear, the stop portion separates from the connecting portion so that the stop portion contacts the first external spline or the second external spline.

[0009] In some solutions, the connecting portion is provided with a first clamping hole, the two stop portions are respectively provided with a second clamping hole, and the two second clamping holes are connected to the first clamping holes through a sliding groove; One end of the shift assembly extends into the sliding groove and can be limitedly matched with the first clamping hole and the second clamping hole, and can be separated by force.

[0010] In some embodiments, the connecting shaft is provided with one of a limiting groove or a limiting protrusion, and the connecting portion is provided with the other of the limiting groove or the limiting protrusion; the limiting protrusion is embedded in the limiting groove and can move along the extension direction of the limiting groove; And / or, one of the stop portion and the connecting portion is provided with a guide hole, and the other is provided with a guide rod, and the guide rod is engaged with the guide hole; And / or, one of the contact surfaces between the stop portion and the first external spline is an inclined surface; And / or, one of the contact surfaces between the stop portion and the second external spline is an inclined surface.

[0011] In some aspects, the shift assembly includes a moving portion, a rotating portion, and a toggle member; The rotating part is provided with a clamping protrusion, and as the shift assembly moves, the clamping protrusion is connected with the connecting part or the stop part; The moving part is rotationally connected to the connecting part and is connected to the toggle member; the toggle member is used to drive the moving part to move along the axial direction of the connecting shaft.

[0012] In some embodiments, the first output shaft is provided with a third gear and a fourth gear, the third gear is engaged with one of the first gear and the second gear, and the fourth gear is connected to the second gear through a fifth gear so that the rotation directions of the first gear and the second gear are opposite.

[0013] In some solutions, the transmission assembly includes a plurality of sixth gears. The connecting shaft is provided with first external teeth, and the second output shaft is provided with second external teeth. The first external teeth and the second external teeth are respectively engaged with the plurality of sixth gears.

[0014] In a second aspect, the present application also discloses a gearbox, including the output shaft reversing mechanism in the first aspect.

[0015] The technical solutions adopted by the present invention can achieve the following beneficial effects: For the output shaft reversing mechanism of the present application, when the shifting component is connected to the first gear or the second gear, the shifting component and the coupling member limit the relative circumferential sliding of the first gear or the second gear and the connecting shaft, so that the first gear or the second gear drives the connecting shaft to rotate. When the connecting shaft rotates, since the connecting shaft is connected to the second output shaft through the transmission assembly, the second output shaft rotates synchronously, so that the rotation directions of the first output shaft and the second output shaft are the same and opposite. The output shaft reversing mechanism integrates the first gear and the second gear required for forward and reverse rotation on the same connecting shaft, and directly connects to the target gear by axially sliding the shifting component, eliminating the additional idler gear set, multi-axis system and complex linkage structure in the traditional reversing mechanism, making the overall layout highly compact along a single axis, and significantly reducing the equipment volume and the occupied installation space. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0017] Figure 1 Is an axonometric view of the output shaft reversing mechanism disclosed in some embodiments of the present application Figure 1 ; Figure 2 Is an axonometric view of the output shaft reversing mechanism disclosed in some embodiments of the present application Figure 2 ; Figure 3 Is a schematic diagram of the cooperation relationship between the rotating part and the first gear and the second gear disclosed in some embodiments of the present application; Figure 4 Is Figure 3 The enlarged view of part A in Figure 5 Is the front view of the shifting component disclosed in some embodiments of the present application; Figure 6 Is the axonometric view of the coupling member disclosed in some embodiments of the present application.

[0018] In the figure: 100 - connecting shaft, 110 - first gear, 111 - first external spline, 120 - second gear, 121 - second external spline, 130 - limiting groove; 200 - shifting component, 210 - rotating part, 211 - clamping projection, 220 - moving part, 230 - shifting member, 231 - handle, 232 - connecting rod, 240 - slide bar; 300 - first output shaft, 310 - third gear, 320 - fourth gear, 330 - fifth gear; 400 - second output shaft; 500 - sixth gear; 600 - coupling member, 601 - sliding groove, 610 - connecting part, 611 - guiding hole, 612 - first clamping hole, 613 - limiting projection, 620 - abutting part, 621 - second clamping hole, 622 - guiding rod. Detailed implementation manners

[0019] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other implementation manners obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0020] The terms "first", "second", etc. in the specification and claims of this application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments of this application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are usually of the same type, and do not limit the number of objects. For example, the first object can be one or multiple. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / ", generally represents an "or" relationship between the associated objects before and after.

[0021] An output shaft reversing mechanism is provided in part of the gearbox to achieve the control of the forward and reverse rotation of the output shaft of the gearbox. However, the structure of the output shaft reversing mechanism is complex. The traditional output shaft reversing mechanism needs to additionally increase an idle gear, multiple sets of clutches or a complex lever system to achieve reverse rotation, resulting in a bloated structure and a large volume of the gearbox.

[0022] The following combines the attached Figures 1 to 6 , and through specific embodiments and their application scenarios, a kind of output shaft reversing mechanism and gearbox provided by this application are described in detail.

[0023] Some embodiments of the present application disclose an output shaft commutation mechanism, including a connecting shaft 100, a shifting assembly 200, a first output shaft 300, a second output shaft 400, a transmission assembly, and a coupling member 600.

[0024] As Figure 1 and Figure 2 shown, a first gear 110 and a second gear 120 are rotatably provided on the connecting shaft 100, and the rotation directions of the first gear 110 and the second gear 120 are opposite. By directly providing the first gear 110 and the second gear 120 with opposite rotation directions on the connecting shaft 100, the shifting assembly 200 can directly switch the rotation direction of the second output shaft 400 only by axially moving, without additional idler gears or clutch devices, significantly improving the structural compactness, commutation response speed, and transmission reliability.

[0025] As Figure 1 and Figure 2 shown, one end of the first output shaft 300 is used to connect to a power source and is cooperatively connected to the connecting shaft 100 to transmit the torque of the power source to the first gear 110 and the second gear 120. The power source is used to drive the first output shaft 300 to rotate, and since the first output shaft 300 is also cooperatively connected to the connecting shaft 100, the first gear 110 and the second gear 120 rotate synchronously.

[0026] As Figure 1 and Figure 2 shown, the second output shaft 400 is cooperatively connected to the connecting shaft 100 through a transmission assembly to transmit the torque of the power source to the second output shaft 400. When the connecting shaft 100 rotates, since the connecting shaft 100 is cooperatively connected to the second output shaft 400 through a transmission assembly, the second output shaft 400 rotates synchronously.

[0027] Preferably in this embodiment, the power source is preferably a motor with a reducer.

[0028] Preferably in this embodiment, screws are respectively connected to the first output shaft 300 and the second output shaft 400, so that the two screws rotate in the same direction or in opposite directions according to different usage requirements.

[0029] As Figure 3 and Figure 4As shown, the coupling member 600 is arranged on the connecting shaft 100, and the shifting assembly 200 is connected to the connecting shaft 100 through the coupling member 600; the shifting assembly 200 can move axially along the connecting shaft 100 between the first gear 110 and the second gear 120 so that the shifting assembly 200 is connected to the first gear 110 or the second gear 120. When the shifting assembly 200 is connected to the first gear 110 or the second gear 120, the shifting assembly 200 and the coupling member 600 limit the relative circumferential sliding of the first gear 110 or the second gear 120 with respect to the connecting shaft 100, thereby enabling the first gear 110 or the second gear 120 to drive the connecting shaft 100 to rotate.

[0030] The design that the shifting assembly 200 is directly connected to the connecting shaft 100 and can move axially between the first gear 110 and the second gear 120 enables the reversing operation to directly switch the connection with the first gear 110 or the second gear 120 only with a single axial movement, eliminating the complex separation and meshing processes required for traditional reversing, greatly improving the operation efficiency and reducing the switching time.

[0031] As Figure 1 , Figure 2 , Figure 3 and Figure 4 shown, when the shifting assembly 200 is connected to one of the first gear 110 and the second gear 120, the rotation directions of the first output shaft 300 and the second output shaft 400 are the same; when the shifting assembly 200 is connected to the other of the first gear 110 and the second gear 120, the rotation directions of the first output shaft 300 and the second output shaft 400 are opposite. By selectively connecting the shifting assembly 200 to the first gear 110 or the second gear 120, this mechanism can precisely control the same-direction rotation or opposite-direction rotation states of the first output shaft 300 and the second output shaft 400 only with a single axial operation, greatly improving the operation efficiency and reducing the switching time.

[0032] In some embodiments, when the shifting assembly 200 is connected to the first gear 110, the rotation directions of the first output shaft 300 and the second output shaft 400 are opposite; when the shifting assembly 200 is connected to the second gear 120, the rotation directions of the first output shaft 300 and the second output shaft 400 are the same.

[0033] In some embodiments, when the shifting assembly 200 is connected to the second gear 120, the rotation directions of the first output shaft 300 and the second output shaft 400 are opposite; when the shifting assembly 200 is connected to the first gear 110, the rotation directions of the first output shaft 300 and the second output shaft 400 are the same.

[0034] As Figure 3As shown, the first gear 110 is connected with a first external spline 111 through a first elastic member (not shown in the figure), and the first external spline 111 can move radially along the connecting shaft 100. When the first external spline 111 moves radially outward along the connecting shaft 100, the first external spline 111 abuts against the shifting assembly 200, so that the first gear 110 is cooperatively connected with the shifting assembly 200, and then the first gear 110 drives the connecting shaft 100 to rotate synchronously through the shifting assembly 200. Moreover, when the first external spline 111 moves radially outward along the connecting shaft 100, the first elastic member is compressed, so that the first elastic member stores elastic potential energy and drives the first external spline 111 to move radially inward along the connecting shaft 100, so that the first external spline 111 is separated from the shifting assembly 200.

[0035] As Figure 3 shown, the second gear 120 is connected with a second external spline 121 through a second elastic member (not shown in the figure), and the second external spline 121 can move radially along the connecting shaft 100. When the second external spline 121 moves radially outward along the connecting shaft 100, the second external spline 121 abuts against the shifting assembly 200, so that the second gear 120 is cooperatively connected with the shifting assembly 200, and then the second gear 120 drives the connecting shaft 100 to rotate synchronously through the shifting assembly 200. Moreover, when the second external spline 121 moves radially outward along the connecting shaft 100, the second elastic member is compressed, so that the second elastic member stores elastic potential energy and drives the second external spline 121 to move radially inward along the connecting shaft 100, so that the second external spline 121 is separated from the shifting assembly 200.

[0036] Preferably in this embodiment, the first elastic member and the second elastic member are preferably spiral springs.

[0037] As Figure 3 and Figure 4As shown, the coupling member 600 is slidably connected to the connecting shaft 100 along the axial direction of the connecting shaft 100 and cannot rotate circumferentially relative to the connecting shaft 100. By sliding the coupling member 600 along the axial direction of the connecting shaft 100, during the process of the coupling member 600 moving towards the first gear 110, as the coupling member 600 moves, the coupling member 600 contacts the first external spline 111, causing the first external spline 111 to move radially outward along the connecting shaft 100 and abut against the shifting assembly 200; during the process of the coupling member 600 moving towards the second gear 120, as the coupling member 600 moves, the coupling member 600 contacts the second external spline 121, causing the second external spline 121 to move radially outward along the connecting shaft 100 and abut against the shifting assembly 200. Correspondingly, during the process of the coupling member 600 moving towards the first gear 110, the second external spline 121 moves radially inward along the connecting shaft 100 under the action of the second elastic member; during the process of the coupling member 600 moving towards the second gear 120, the first external spline 111 moves radially inward along the connecting shaft 100 under the action of the first elastic member.

[0038] Moreover, since the coupling member 600 cannot rotate circumferentially relative to the connecting shaft 100, when the shifting assembly 200 is in mating connection with the first gear 110 or the second gear 120, the torque of the first gear 110 or the second gear 120 is transmitted to the coupling member 600 through the shifting assembly 200, thereby causing the coupling member 600 to drive the connecting shaft 100 to rotate.

[0039] As Figure 4 and Figure 6 shown, the coupling member 600 includes a connecting portion 610 and two abutting portions 620; the two abutting portions 620 are connected to the two axial ends of the connecting portion 610, and the two abutting portions 620 are respectively used to contact the first external spline 111 and the second external spline 121 to move the first external spline 111 and the second external spline 121. During the process of the coupling member 600 moving towards the first external spline 111, as the coupling member 600 moves, one of the abutting portions 620 contacts the first external spline 111, causing the first external spline 111 to move radially outward along the connecting shaft 100 and abut against the shifting assembly 200. Correspondingly, after the coupling member 600 is separated from the first external spline 111 or the second external spline 121, under the action of the first elastic member or the second elastic member, the first external spline 111 or the second external spline 121 moves radially inward along the connecting shaft 100.

[0040] The design of the connecting portion 610 and the axial end abutting portions 620 of the coupling member 600 contacts the first external spline 111 and the second external spline 121 respectively through the two abutting portions 620, replacing the traditional lever fork structure with an axially compact push-pull, eliminating the need for radial swing space, and greatly compressing the volume of the commutation actuator. After the abutting portion 620 is separated from the first external spline 111 or the second external spline 121, under the action of the first elastic member or the second elastic member, the first external spline 111 or the second external spline 121 moves inward along the radial direction of the connecting shaft 100 One of the contact surfaces between the abutting portion 620 and the first external spline 111 is an inclined surface. The contact surface between the abutting portion 620 and the first external spline 111 is designed with an inclined surface, converting the axial displacement of the coupling member 600 into a radial component force for the synchronous sliding of the first external spline 111, so as to better drive the movement of the first external spline 111.

[0041] One of the contact surfaces between the abutting portion 620 and the second external spline 121 is an inclined surface. The contact surface between the abutting portion 620 and the second external spline 121 is designed with an inclined surface, converting the axial displacement of the coupling member 600 into a radial component force for the synchronous sliding of the second external spline 121, so as to better drive the movement of the second external spline 121.

[0042] Preferably in this embodiment, the contact surfaces between the abutting portion 620 and the first external spline 111 are all inclined surfaces, and the contact surfaces between the abutting portion 620 and the second external spline 121 are all inclined surfaces.

[0043] As Figure 4 and Figure 6 shown, both of the two abutting portions 620 can be forced to separate from the connecting portion 610, so that the abutting portion 620 moves axially along the connecting portion 610; when the coupling member 600 moves towards the first gear 110 or the second gear 120 through the dead point position, when the coupling member 600 is at the dead point position, the projection parts of the shifting assembly 200 and the first gear 110 or the second gear 120 along the radial direction of the connecting shaft 100 overlap. When the coupling member 600 is at the dead point position, the projection parts of the shifting assembly 200 and the first gear 110 or the second gear 120 along the radial direction of the connecting shaft 100 overlap, forming a pre-engagement state. At this time, the abutting portion 620 is still separated from the connecting portion 610, and there is a certain gap between the abutting portion 620 and the first external spline 111 or the second external spline 121.

[0044] When the coupling member 600 moves towards the first gear 110 or the second gear 120 through the dead point position, the abutting portion 620 is separated from the connecting portion 610, so that the abutting portion 620 contacts the first external spline 111 or the second external spline 121, and then further enables the first external spline 111 or the second external spline 121 to be cooperatively connected with the shifting assembly 200.

[0045] When the coupling member 600 moves to the dead center position, the shifting component 200 and the first gear 110 or the second gear 120 achieve an exact radial projection overlap, but there is a gap between the abutting portion 620 and the first external spline 111 or the second external spline 121. After complete alignment, the abutting portion 620 moves independently and abuts against the first external spline 111 or the second external spline 121, completely eliminating the hard impact of the rotational speed difference caused by the dynamic rotation of the gear and the static insertion of the shifting component 200 in the traditional direct engagement, thereby greatly reducing the tooth surface wear and reducing the impact noise.

[0046] As Figure 6 shown, the connecting portion 610 is provided with a first clamping hole 612, the two abutting portions 620 are respectively provided with second clamping holes 621, and the two second clamping holes 621 are connected to the first clamping hole 612 through a sliding groove 601; one end of the shifting component 200 extends into the sliding groove 601 and can be in limit fit with the first clamping hole 612 and the second clamping hole 621, and can be separated by force. When the shifting component 200 is connected to the first clamping hole 612, as the shifting component 200 moves, it drives the connecting portion 610 and the two abutting portions 620 to move synchronously; when the connecting portion 610 moves to the dead center position, under the action of an external force, the shifting component 200 is separated from the first clamping hole 612 and moves along the sliding groove to one of the second clamping holes 621, and as the shifting component 200 continues to move, the abutting portion 620 and the connecting portion 610 are separated by force, so that the abutting portion 620 moves independently. The sliding groove 601 plays a guiding role in the movement of the shifting component 200, ensuring that the movement path of the shifting component 200 can pass through the first clamping hole 612 and the second clamping hole 621.

[0047] Moreover, one end of the shifting component 200 extends into the sliding groove 601, so that the shifting component 200 and the coupling member 600 cannot rotate relative to each other in the circumferential direction, and further enables the torque of the first gear 110 or the second gear 120 to drive the connecting shaft 100 to rotate through the shifting component 200 and the coupling member 600.

[0048] As Figure 4 shown, the connecting shaft 100 is provided with one of a limiting groove 130 or a limiting protrusion 613, and the connecting portion 610 is provided with the other of the limiting groove 130 or the limiting protrusion 613; the limiting protrusion 613 is embedded in the limiting groove 130 and can move along the extending direction of the limiting groove 130. The cooperation of the limiting groove 130 and the limiting protrusion 613 enables the connecting portion 610 to have two dead center positions when moving along the axial direction of the connecting shaft 100.

[0049] In some embodiments, the connecting shaft 100 is provided with a limiting groove 130, and the connecting portion 610 is provided with a limiting protrusion 613.

[0050] In some embodiments, the connecting shaft 100 is provided with a limiting protrusion 613, and the connecting portion 610 is provided with a limiting groove 130.

[0051] As Figure 6 shown, one of the abutting portion 620 and the connecting portion 610 is provided with a guiding hole 611, and the other is provided with a guiding rod 622. The guiding rod 622 is clamped with the guiding hole 611. By the way that the guiding rod 622 is clamped with the guiding hole 611, the abutting portion 620 and the connecting portion 610 can be separated under force. Moreover, the cooperation between the guiding rod 622 and the guiding hole 611 plays a guiding role in the movement of the abutting portion 620.

[0052] More specifically, a clamping groove is provided on the circumferential direction of the guiding rod 622, and an elastic protrusion is provided in the guiding hole 611. Through the cooperation between the elastic protrusion and the clamping groove, the clamping of the guiding rod 622 with the guiding hole 611 is realized. Moreover, the elastic protrusion can be deformed under force, so that the elastic protrusion is separated from the clamping groove, achieving the purpose that the abutting portion 620 and the connecting portion 610 can be separated under force.

[0053] In some embodiments, the abutting portion 620 is provided with a guiding hole 611, and the connecting portion 610 is provided with a guiding rod 622.

[0054] In some embodiments, the abutting portion 620 is provided with a guiding rod 622, and the connecting portion 610 is provided with a guiding hole 611.

[0055] As Figure 1 、 Figure 2 and Figure 5 shown, the shifting component 200 includes a moving portion 220, a rotating portion 210 and a shifting member 230; the rotating portion 210 is provided with a clamping protrusion 211. As the shifting component 200 moves, the clamping protrusion 211 is connected to the connecting portion 610 or the abutting portion 620. The rotating portion 210 realizes the circumferential limiting cooperation with the driving member through the clamping protrusion 211. As the shifting component 200 moves, the clamping protrusion 211 is connected to the connecting portion 610 or the abutting portion 620, thereby driving the coupling member 600 to move or the abutting portion 620 to move alone.

[0056] Preferably in this embodiment, the inner wall of the rotating portion 210 and the outer wall of the connecting portion 610 are circumferentially limited and cooperate with each other, so as to better transmit the torque of the first gear 110 or the second gear 120 to the connecting shaft 100 through the coupling member 600 to drive the connecting shaft 100 to rotate.

[0057] As Figure 5As shown, the moving part 220 is rotatably connected to the connecting part 610 and is connected to the toggling part 230; the toggling part 230 is used to drive the moving part 220 to move along the axial direction of the connecting shaft 100. By setting the toggling part 230, the moving part 220 can be driven to move along the axial direction of the connecting shaft 100 by operating the toggling part 230, so that the rotating part 210 is engaged and connected with the first gear 110 or the second gear 120, and the operation is simple and convenient.

[0058] Specifically, the toggling part 230 includes a handle 231 and a connecting rod 232. One end of the handle 231 is connected to one end of the connecting rod 232, and the other end of the connecting rod 232 is ball-socket connected to the moving part 220. By rotating the handle 231, the connecting rod 232 rotates synchronously, and then the connecting rod 232 drives the moving part 220 to move.

[0059] It should be noted that the output shaft reversing mechanism is arranged in a box body (not shown in the figure). A sliding rod 240 is arranged in the box body. The moving part 220 is sleeved on the sliding rod 240 and can move along the extending direction of the sliding rod 240. The sliding rod 240 plays a guiding role in the sliding of the shifting component 200 to ensure the smooth sliding of the shifting component 200. The handle 231 is located outside the box body, and its end passes through the box body and is connected to the connecting rod 232, which is convenient for the operator to operate the handle 231.

[0060] It should also be noted that during the process of driving the moving part 220 to move by rotating the handle 231, the moving part 220 will rotate along its circumferential direction. Since the moving part 220 is rotatably connected to the rotating part 210, there will be no movement interference.

[0061] As Figure 1 and Figure 2 shown, the first output shaft 300 is provided with a third gear 310 and a fourth gear 320. The third gear 310 meshes with one of the first gear 110 and the second gear 120. The fourth gear 320 is connected to the second gear 120 through a fifth gear 330, so that the rotation directions of the first gear 110 and the second gear 120 are opposite. The third gear 310 directly meshes with one of the first gear 110 and the second gear 120 to transmit the same-direction rotation. At the same time, the fourth gear 320 is forced to change the rotation direction of the other of the first gear 110 and the second gear 120 through the intermediary transmission of the fifth gear 330, so as to realize the constant reverse rotation of the first gear 110 and the second gear 120.

[0062] In some embodiments, the third gear 310 meshes with the first gear 110, and the fourth gear 320 is connected to the second gear 120 through a fifth gear 330.

[0063] In some embodiments, the third gear 310 meshes with the second gear 120, and the fourth gear 320 is connected to the first gear 110 through a fifth gear 330.

[0064] It should be noted that the first gear 110 and the second gear 120 are respectively rotatably connected to the connecting shaft 100 through bearings, so that when the connecting shaft 100 rotates, the first gear 110 and the second gear 120 do not rotate synchronously with the connecting shaft 100.

[0065] As Figure 1 and Figure 2 shown, the transmission assembly includes a plurality of sixth gears 500. The connecting shaft 100 is provided with first external teeth, and the second output shaft 400 is provided with second external teeth. The first external teeth and the second external teeth are respectively meshed with the plurality of sixth gears 500. During the rotation of the connecting shaft 100, the plurality of sixth gears 500 are driven to rotate simultaneously. Under the action of the sixth gears 500, the second output shaft 400 is driven to rotate.

[0066] Some embodiments of the present application also disclose a gearbox, including an output shaft reversing mechanism.

[0067] It should be noted that in this text, the term "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such a device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the device including that element.

[0068] In addition, it should be pointed out that the scope of the device in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in a reverse order according to the functions involved. For example, the described method may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, the features described with reference to certain examples may be combined in other examples.

[0069] As mentioned above, the above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention.

Claims

1. An output shaft commutation mechanism, characterized in that, Comprising: A connecting shaft, on which a first gear and a second gear are rotatably arranged, and the rotation directions of the first gear and the second gear are opposite; A first output shaft, one end of which is used to connect to a power source and is cooperatively connected with the connecting shaft so that the torque of the power source is transmitted to the first gear and the second gear; A second output shaft, which is cooperatively connected with the connecting shaft through a transmission assembly so that the torque of the power source is transmitted to the second output shaft; A shifting assembly, which is connected to the connecting shaft through a coupling member; the shifting assembly can move axially along the connecting shaft between the first gear and the second gear so that the shifting assembly is connected to the first gear or the second gear; When the shifting assembly is connected to one of the first gear and the second gear, the rotation directions of the first output shaft and the second output shaft are the same; when the shifting assembly is connected to the other of the first gear and the second gear, the rotation directions of the first output shaft and the second output shaft are opposite.

2. The output shaft commutation mechanism according to claim 1, characterized in that, The coupling member is slidably connected to the connecting shaft axially along the connecting shaft and cannot rotate circumferentially relative to the connecting shaft; the first gear is connected with a first external spline through a first elastic member, and the second gear is connected with a second external spline through a second elastic member, and both the first external spline and the second external spline can move radially along the connecting shaft; When the coupling member contacts the first external spline, the first external spline moves axially away from the first gear and is connected to the shifting assembly; when the coupling member contacts the second external spline, the second external spline moves axially away from the second gear and is connected to the shifting assembly.

3. The output shaft commutation mechanism according to claim 2, characterized in that, The coupling member includes a connecting portion and two abutting portions; the two abutting portions are connected to the two axial ends of the connecting portion, and the two abutting portions are respectively used to contact the first external spline and the second external spline to move the first external spline and the second external spline.

4. The output shaft commutation mechanism according to claim 3, characterized in that, Both of the two abutting portions can be separated from the connecting portion under force so that the abutting portions move axially along the connecting portion; During the process of the coupling member moving towards the first gear or the second gear, it passes through a dead point position. When the coupling member is at the dead point position, the projection of the shifting assembly and the first gear or the second gear along the radial direction of the connecting shaft partially overlaps; when the coupling member passes through the dead point position and moves towards the first gear or the second gear, the abutting portion is separated from the connecting portion so that the abutting portion contacts the first external spline or the second external spline.

5. The output shaft commutation mechanism according to claim 4, characterized in that, The connecting portion is provided with a first clamping hole, and the two abutting portions are respectively provided with second clamping holes, and the two second clamping holes are connected to the first clamping hole through a sliding groove; One end of the shifting assembly extends into the sliding groove and can be in limit cooperation with the first clamping hole and the second clamping hole and can be separated under force.

6. The output shaft commutation mechanism according to claim 4, wherein, The connecting shaft is provided with one of a limiting groove or a limiting protrusion, and the connecting portion is provided with the other of a limiting groove or a limiting protrusion; the limiting protrusion is embedded in the limiting groove and can move along the extending direction of the limiting groove; And / or, one of the abutting portion and the connecting portion is provided with a guiding hole, and the other is provided with a guiding rod, and the guiding rod is clamped with the guiding hole; And / or, one of the contact surfaces between the abutting portion and the first external spline is an inclined surface; And / or, one of the contact surfaces between the abutting portion and the second external spline is an inclined surface.

7. The output shaft commutation mechanism according to claim 4, characterized in that The shifting assembly includes a moving portion, a rotating portion and a shifting member; The rotating portion is provided with a clamping protrusion, and as the shifting assembly moves, the clamping protrusion is connected to the connecting portion or the abutting portion; The moving portion is rotatably connected to the connecting portion and is connected to the shifting member; the shifting member is configured to drive the moving portion to move along the axial direction of the connecting shaft.

8. The output shaft commutation mechanism according to claim 1, characterized in that The first output shaft is provided with a third gear and a fourth gear, the third gear meshes with one of the first gear and the second gear, and the fourth gear is connected to the second gear through a fifth gear, so that the rotation directions of the first gear and the second gear are opposite.

9. The output shaft commutation mechanism according to claim 1, characterized in that The transmission assembly includes a plurality of sixth gears, the connecting shaft is provided with a first external tooth, the second output shaft is provided with a second external tooth, and the first external tooth and the second external tooth respectively mesh with the plurality of sixth gears.

10. A gearbox, characterized in that, Including the output shaft reversing mechanism according to any one of claims 1-9.

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