Liquid level regulating device for gear box structure, gear box structure and vehicle

Abstract

The embodiment of the present disclosure provides a liquid level regulating device for a gearbox structure, a gearbox structure and a vehicle, the liquid level regulating device comprises: a first transmission gear meshingly connected with a second transmission gear of the gearbox structure; a centrifugal regulating mechanism coaxially connected with the first transmission gear, the centrifugal regulating mechanism comprising a centrifugal shaft and a first connecting member and a second connecting member sleeved on the centrifugal shaft, a centrifugal space is formed between the first connecting member and the second connecting member, a plurality of centrifugal members are installed in the centrifugal space, the centrifugal regulating mechanism further comprises an elastic member arranged on a side of the second connecting member away from the first connecting member; a cam baffle mechanism comprises a shift fork, a cam and a baffle, the shift fork is connected to the baffle through the cam, one end of the shift fork is sleeved on the centrifugal shaft, and the shift fork is located between the second connecting member and the elastic member; an oil spray box, the oil spray box is provided with an adjusting component corresponding to the baffle. The present disclosure can directly adjust the internal oil storage amount of the gearbox according to the rotation speed of the gearbox.

Description

Technical Field

[0001] The present disclosure relates to the technical field of vehicle steering, and in particular to a liquid level regulating device for a gear box structure, a gear box structure and a vehicle. Background Art

[0002] As fuel vehicles gradually increase their requirements for fuel consumption reduction and pure electric vehicles gradually increase their requirements for driving range, all fuel vehicles, hybrid vehicles and pure electric vehicles have put forward higher requirements for the transmission efficiency of the transmission system. As the core component of the transmission system such as automatic transmission, manual transmission and electric vehicle reducer, the transmission efficiency of the gearbox plays a vital role.

[0003] The gearbox is mainly composed of a gear train for transmitting power, a housing for wrapping and supporting, gear oil for lubrication and heat dissipation inside, and other accessories. The gear oil inside the gearbox splashes everywhere under the movement and agitation of the internal gear train, and is used to provide lubricating oil film and heat dissipation for the meshing tooth surfaces of the gears, the rolling elements of the bearings, and other moving pairs.

[0004] The efficiency loss of the gearbox is mainly composed of tooth surface meshing friction loss, bearing rotation friction loss and lubricating oil stirring heat loss. Among them, tooth surface meshing friction loss accounts for a relatively low proportion, and bearing rotation friction loss has little effect on the speed. Lubricating oil stirring heat gradually becomes the main cause of gearbox efficiency loss as the gearbox speed increases. With the development of electric vehicle reducer technology, the maximum speed of the gearbox has gradually increased and has exceeded 20,000r / min. Therefore, effectively controlling the high-speed stirring loss of the gearbox and reducing the high-speed stirring heat are of great significance to improving the efficiency of the transmission system, reducing the fuel consumption and power consumption of the vehicle, and improving the overall reliability of the transmission system.

[0005] When the gearbox is running at low speed and high torque, the oil temperature is relatively low, the kinematic viscosity is large, the density is high, and the volume is small. At this time, the oil level inside the gearbox should be kept at a high position to ensure good lubrication at low speed and low oil stirring efficiency loss at this time; when the gearbox is running at high speed and low torque, the oil temperature is high, the kinematic viscosity is low, the density is low, and the volume is large. At this time, the oil level inside the gearbox should be kept at a low position, and a small amount of lubricating oil can meet the lubrication requirements, and can effectively reduce high-speed oil stirring losses.

[0006] In the prior art, an oil spray tank is usually provided at the top, and the oil level of the oil spray tank cannot be adjusted. Therefore, the oil level inside the gearbox cannot be adjusted with the speed. The oil level only exists in two states: high and low, and the adjustment effect is poor. Summary of the invention

[0007] The purpose of the embodiments of the present disclosure is to provide a liquid level regulating device for a gearbox structure, a gearbox structure and a vehicle to solve the problems existing in the prior art.

[0008] In order to solve the above technical problems, the embodiments of the present disclosure adopt the following technical solutions:

[0009] A liquid level regulating device for a gear box structure, comprising:

[0010] A first transmission gear meshingly connected with a second transmission gear of the gear box structure;

[0011] a centrifugal adjustment mechanism, coaxially connected to the first transmission gear, comprising a centrifugal shaft and a first connecting member and a second connecting member sleeved on the centrifugal shaft, a centrifugal space being formed between the first connecting member and the second connecting member, a plurality of centrifugal members being installed in the centrifugal space, and the centrifugal adjustment mechanism further comprising an elastic member arranged on a side of the second connecting member away from the first connecting member;

[0012] A cam baffle mechanism, comprising a shift fork, a cam and a baffle, wherein the shift fork is connected to the baffle through the cam, one end of the shift fork is sleeved on the centrifugal shaft, and the shift fork is located between the second connecting member and the elastic member;

[0013] An oil shower box is provided with an adjusting component corresponding to the baffle, the other end of the fork is slidably connected to a slide rail arranged on the oil shower box, the rotation of the second transmission gear can drive the first transmission gear to rotate, thereby driving the centrifugal member to perform centrifugal movement in the centrifugal space, and the centrifugal member can act on the second connecting member during centrifugal movement, and then act on the fork and the elastic member, pushing the fork to slide along the slide rail, and then driving the baffle to move through the cam to act on the adjusting component, so as to adjust the liquid level of the oil shower box.

[0014] In some embodiments, the first contact surface of the first connecting member that cooperates with the centrifugal member is a conical surface, and the second contact surface of the second connecting member that cooperates with the centrifugal member is a conical surface.

[0015] In some embodiments, a plurality of centrifugal tracks are provided in the centrifugal space to correspond one-to-one to the plurality of centrifugal members.

[0016] In some embodiments, the adjustment component is an adjustment port opened on the oil shower box;

[0017] The cam is fixed to the baffle and is in contact with the shift fork. The cam baffle mechanism also includes a baffle shaft installed on the oil spray box. The baffle is rotatably connected to the baffle shaft.

[0018] In some embodiments, the location where the centrifugal shaft is connected to the second connecting member is a flat key, a spline or a keyway structure.

[0019] In some embodiments, a connecting shaft for mounting the shift fork is provided on the second connecting member, the shift fork is sleeved on the outer circumference of the connecting shaft, one end of the connecting shaft is connected to the end surface of the second connecting member, and the other end of the connecting shaft has a first limit member; the central opening of the connecting shaft allows the centrifugal shaft to pass therethrough.

[0020] In some embodiments, a second limiting member cooperating with the first limiting member is disposed on the centrifugal shaft, and the elastic member is sleeved between the first limiting member and the second limiting member.

[0021] In some embodiments, the centrifugal member is a steel ball or a steel column.

[0022] The present disclosure also provides a gearbox structure, which includes the liquid level regulating device described in any one of the above technical solutions.

[0023] The present disclosure also provides a vehicle, which includes the above-mentioned gearbox structure.

[0024] The liquid level regulating device, gear box structure and vehicle for the gear box structure provided by the embodiments of the present disclosure can utilize the centrifugal movement of the centrifugal part when the centrifugal regulating mechanism rotates to convert the rotation of the first transmission gear 1 into the movement of the shift fork through the cooperation of the centrifugal regulating mechanism and the cam baffle mechanism. At the same time, the change of the displacement direction is realized through the cam and lever principle, driving the baffle to move relative to the regulating component, thereby realizing the automatic adjustment of the oil level in the gear box structure as the gear box rotates. Moreover, full automatic control can be achieved by relying solely on the mechanical structure without the need for other electronic control systems. The structure is simple, stable and reliable, and the centrifugal regulating mechanism has no redundant and complex moving pairs and does not require additional space. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0026] Figure 1 A structural schematic diagram of a liquid level regulating device for a gear box structure according to an embodiment of the present disclosure (low speed);

[0027] Figure 2 Another structural schematic diagram of the liquid level regulating device for a gearbox structure according to an embodiment of the present disclosure (high speed);

[0028] Figure 3 It is a schematic diagram of the exploded structure of the centrifugal adjustment mechanism of the embodiment of the present disclosure;

[0029] Figure 4 is a side cross-sectional view of a centrifugal adjustment mechanism according to an embodiment of the present disclosure (at low speed);

[0030] Figure 5 is another side cross-sectional view of the centrifugal adjustment mechanism of the disclosed embodiment (high speed);

[0031] Figure 6 It is a schematic structural diagram of the gearbox structure of an embodiment of the present disclosure (low speed);

[0032] Figure 7 Another structural schematic diagram of the gearbox structure of the embodiment of the present disclosure (high speed);

[0033] Figure 8 This is a working principle diagram of the liquid level regulating device for the gearbox structure according to an embodiment of the present disclosure.

[0034] Reference numerals:

[0035] 1-first transmission gear; 10-second transmission gear; 2-centrifugal adjustment mechanism, 201-centrifugal space, 2011-centrifugal track, 21-centrifugal shaft, 211-connecting part, 212-second limiter, 22-first connecting part, 221-first contact surface, 23-second connecting part, 231-second contact surface, 232-central axis hole, 233-connecting shaft, 234-first limiter, 24-centrifugal part, 25-elastic part; 3-cam baffle mechanism, 31-shift fork, 32-cam, 33-baffle, 34-baffle shaft; 4-oil spraying box, 41-adjusting component, 42-slide rail, 43-oil spraying port. DETAILED DESCRIPTION

[0036] Various aspects and features of the present disclosure are described herein with reference to the drawings.

[0037] It should be understood that various modifications may be made to the embodiments of the present application. Therefore, the above description should not be considered as limiting, but only as an example of an embodiment. Other modifications within the scope and spirit of the present disclosure will occur to those skilled in the art.

[0038] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the general description of the present disclosure given above and the detailed description of the embodiments given below, serve to explain the principles of the present disclosure.

[0039] These and other characteristics of the present disclosure will become apparent from the following description of a preferred form of embodiment given as a non-limiting example, with reference to the attached drawings.

[0040] It should also be understood that, although the present disclosure has been described with reference to some specific examples, those skilled in the art will be able to realize many other equivalent forms of the present disclosure that have the features described in the claims and are therefore within the scope of protection defined thereby.

[0041] The above and other aspects, features and advantages of the present disclosure will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

[0042] Specific embodiments of the present disclosure are described hereinafter with reference to the accompanying drawings; however, it should be understood that the embodiments claimed are merely examples of the present disclosure, which may be implemented in a variety of ways. Well-known and / or repeated functions and structures are not described in detail to avoid obscuring the present disclosure with unnecessary or redundant details. Therefore, the specific structural and functional details claimed herein are not intended to be limiting, but merely serve as a basis and representative basis for the claims to teach those skilled in the art to use the present disclosure in a variety of ways with substantially any suitable detailed structure.

[0043] This specification may use the phrases "in one embodiment," "in another embodiment," "in a further embodiment," or "in other embodiments," all of which may refer to one or more of the same or different embodiments according to the present disclosure.

[0044] Figures 1 to 5 A schematic structural diagram of a liquid level regulating device for a gear box structure according to an embodiment of the present disclosure is shown. Figure 6 and Figure 7 FIG. 2 is a schematic diagram showing the structure of the gearbox structure of an embodiment of the present disclosure. Figures 1 to 7 As shown, the embodiment of the present disclosure provides a liquid level regulating device for a gear box structure, comprising:

[0045] The first transmission gear 1 is meshed and connected with the second transmission gear 10 of the gear box structure;

[0046] a centrifugal regulating mechanism 2, which is coaxially connected to the first transmission gear 1, and comprises a centrifugal shaft 21 and a first connecting member 22 and a second connecting member 23 sleeved on the centrifugal shaft 21, a centrifugal space 201 is formed between the first connecting member 22 and the second connecting member 23, a plurality of centrifugal members 24 are installed in the centrifugal space 201, and the centrifugal regulating mechanism 2 further comprises an elastic member 25 arranged on a side of the second connecting member 23 away from the first connecting member 22;

[0047] The cam baffle mechanism 3 comprises a shift fork 31, a cam 32 and a baffle 33, wherein the shift fork 31 is connected to the baffle 33 via the cam 32, one end of the shift fork 31 is sleeved on the centrifugal shaft 21, and the shift fork 31 is located between the second connecting member 23 and the elastic member 25;

[0048] The oil shower box 4 is provided with an adjusting component 41 corresponding to the baffle 33, the other end of the fork 31 is slidably connected to a slide rail 42 provided on the oil shower box 4, and the rotation of the second transmission gear 10 can drive the first transmission gear 1 to rotate, thereby driving the centrifugal member 24 to perform centrifugal movement in the centrifugal space 201. When the centrifugal member 24 performs centrifugal movement, it can act on the second connecting member 23, and then act on the fork 31 and the elastic member 25, pushing the fork 31 to slide along the slide rail 42, and then drive the baffle 33 to move through the cam 32 to act on the adjusting component 41, so as to adjust the liquid level of the oil shower box 4.

[0049] Specifically, a plurality of oil spraying ports 43 for discharging oil are further provided at the bottom of the oil spraying box 4. In this embodiment, the adjusting component 41 is an adjusting opening provided on the oil spraying box 4, the cam 32 is fixed to the baffle 33 and is in contact with and connected to the shift fork 31, and the cam baffle mechanism 3 further includes a baffle rotating shaft 34 installed on the oil spraying box 4, and the baffle 33 is rotatably connected to the baffle rotating shaft 34.

[0050] like Figure 1 As shown, when the gearbox structure is in the first state of low-speed rotation, the baffle 33 is located on one side of the adjustment opening through the transmission of the second transmission gear 10, the adjustment opening is fully opened, and the elastic member 25 is in the released state; Figure 2 As shown, when the gearbox structure is in the second state of high-speed rotation, the baffle 33 blocks the adjustment opening through the transmission of the second transmission gear 10, partially opens or completely closes the adjustment opening, and the elastic member 25 is in a compressed state.

[0051] As can be seen from the above, the higher the speed, the smaller the adjustment opening of the oil spray box 4, and the lower the speed, the larger the adjustment opening of the oil spray box 4. Since the gears inside the gearbox continuously bring oil into the oil spray box 4 during rotation, and the oil output of the oil spray port 43 on the oil spray box 4 is certain, the amount of oil stored in the oil spray box 4 depends on the size of the adjustment opening of the oil spray box 4. Therefore, as the speed of the gearbox increases, the adjustment opening of the oil spray box 4 is gradually closed, the oil storage in the oil spray box 4 is gradually increased, and the amount of oil at the bottom of the gearbox is gradually reduced, so as to achieve a reduction in the amount of gear oil stirring at high speed, which greatly reduces the oil stirring loss of the gearbox structure under high-speed rotation. That is, in this embodiment, the gearbox structure can reduce the oil level inside the gearbox under high speed and small torque to avoid excessive oil stirring loss; while under low speed and large torque, the gearbox structure has more oil inside and the oil level is higher, which can ensure sufficient lubrication.

[0052] It can be understood that the characteristics of the lubricating oil in the gearbox structure are high density, small volume, and high kinematic viscosity at low speeds; low density, large volume, and low kinematic viscosity at high speeds. The oil circulates faster at high speeds. Therefore, only a small amount of lubricating oil is needed for lubrication at high speeds.

[0053] In this embodiment, the second transmission gear 10 may be an existing gear in the gear box structure, or may be a separately provided gear meshing with the first transmission gear 1 .

[0054] The liquid level regulating device for a gearbox structure provided in the embodiment of the present disclosure can utilize the centrifugal movement of the centrifugal member 24 when the centrifugal regulating mechanism 2 rotates to convert the rotation of the first transmission gear 1 into the movement of the shift fork 31 through the cooperation of the centrifugal regulating mechanism 2 and the cam baffle mechanism 3. At the same time, the change of the displacement direction is realized through the principle of cam and lever, and the baffle 33 is driven to move relative to the regulating component 41, so as to realize the automatic adjustment of the oil level in the gearbox structure as the gearbox rotates. Moreover, full automatic control can be realized only by relying on the mechanical structure, without the need for other electronic control systems, and the structure is simple, stable and reliable. The centrifugal regulating mechanism 2 has no redundant and complex moving pairs and does not need to occupy additional space.

[0055] The oil pouring tank 4 can not only be used to store oil and provide oil pouring for different positions, but also can adjust the oil storage amount according to the different speeds of the gearbox structure. In particular, with the development of electric drive system technology today, the speed of electric vehicle reducers has exceeded 20,000 r / min, and the gear oil stirring loss at high speed has become its main source of efficiency loss. Therefore, the present disclosure can balance the lubrication demand and the demand for reducing oil stirring loss by controlling the height of the oil stirring liquid level at different speeds.

[0056] In other embodiments, the regulating component 41 includes a regulating opening provided on the oil shower tank 4 and a flow valve connected to the regulating opening, the baffle 33 is provided corresponding to the flow valve, the regulating opening is in a long-open state, and the baffle 33 can act on the flow valve through the cooperation of the centrifugal regulating mechanism 2 and the cam baffle mechanism 3, thereby adjusting the liquid level of the oil shower tank 4 by adjusting the flow through the regulating opening. In specific implementation, the flow valve can be directly provided at the regulating opening, or an oil pipeline connected to the regulating opening can be provided, and the flow valve can be provided on the oil pipeline.

[0057] Preferably, the adjustment opening is a vertical opening, and the opening is relatively large, so that lubricating oil can enter without the need for an additional lubrication mechanism, which is very suitable for use inside a gear box structure.

[0058] In this embodiment, the opening size is adjusted by rotating the baffle 33 around the baffle shaft 34. In other embodiments, the baffle 33 may also be a push plate or a shaft baffle similar to a revolving door, and the specific structure may be set according to actual needs, which is not specifically limited in this disclosure.

[0059] In some embodiments, Figure 4 and Figure 5 As shown, the first contact surface 221 of the first connecting member 22 that cooperates with the centrifugal member 24 is a conical surface, and the second contact surface 231 of the second connecting member 23 that cooperates with the centrifugal member 24 is a conical surface, so that different forces are generated along the axial direction of the centrifugal shaft 21 during the centrifugal movement of the centrifugal member 24, ensuring that the centrifugal member 24 acts on the first connecting member 22 and the second connecting member 23.

[0060] In some other embodiments, the first contact surface 221 and the second contact surface 231 may be other conical surfaces such as hyperbolas.

[0061] In this embodiment, the centrifugal member 24 is preferably a rolling body such as a steel ball or a steel column, so as to facilitate centrifugal motion in the centrifugal space 201 .

[0062] In some embodiments, Figures 3 to 5 As shown, a plurality of centrifugal tracks 2011 are provided in the centrifugal space 201 to correspond one-to-one with the plurality of centrifugal members 24 .

[0063] By setting the centrifugal track 2011, each centrifugal component 24 can move in its own centrifugal track 2011, and a limiting component is set at the edge of the centrifugal track 2011 to prevent the centrifugal component 24 from falling off to other positions in the centrifugal adjustment mechanism 2 and the inside of the gear box, causing damage to other components.

[0064] In this embodiment, the centrifugal tracks 2011 are arranged in a centrally symmetrical manner, which can ensure the dynamic balance of the entire centrifugal adjustment mechanism 2 during the rotation process.

[0065] In some embodiments, the location where the centrifugal shaft 21 is connected to the second connecting member 23 is a flat key, a spline or a keyway structure.

[0066] like Figures 3 to 5 As shown, in this embodiment, the connecting portion 211 connecting the centrifugal shaft 21 and the second connecting member 23 is a square flat key, and a square central axis hole 232 (or flat key keyway) is opened in the center of the second connecting member 23, so that the second connecting member 23 can rotate with the centrifugal shaft 21 and slide on it.

[0067] In some embodiments, a connecting shaft 233 for mounting the shift fork 31 is provided on the second connecting member 23, the shift fork 31 is sleeved on the outer circumference of the connecting shaft 233, one end of the connecting shaft 233 is connected to the end face of the second connecting member 23, and the other end of the connecting shaft 233 has a first limit member 234; the central opening of the connecting shaft 233 allows the centrifugal shaft 21 to pass therethrough.

[0068] A corresponding opening groove is provided at the end of the shift fork 31 so that the shift fork 31 can be sleeved on the outer periphery of the connecting shaft 233. At the same time, the shift fork 31 is limited between the end surface of the second connecting member 23 and the first limiting member 234 to limit the moving range of the shift fork 31. The central opening of the connecting shaft 233 is the central axis hole 232 of the second connecting member 23, which has a reasonable structure and is easy to disassemble and assemble.

[0069] In some embodiments, the centrifugal shaft 21 is provided with a second limiting member 212 that cooperates with the first limiting member 234 , and the elastic member 25 is sleeved between the first limiting member 234 and the second limiting member 212 .

[0070] The elastic member 25 may be a spring or an elastic sleeve to provide elastic force to the second connecting member 23. In this embodiment, by respectively arranging the first limiting member 234 and the second limiting member 212 on the second connecting member 23 and the centrifugal shaft 21, the structure is simple, reasonable, stable and reliable.

[0071] The specific working process of the liquid level regulating device for the gear box structure provided by the embodiment of the present disclosure is as follows:

[0072] The internal gear of the gearbox structure drives the rigidly connected second transmission gear 10 to rotate during the rotational movement, and the rotation of the second transmission gear 10 drives the meshing first transmission gear 1 to rotate, thereby driving the entire centrifugal adjustment mechanism 2 coaxial with the first transmission gear 1 to rotate; during the rotation of the centrifugal adjustment mechanism 2, the centrifugal member 24 located in the centrifugal space 201 has a tendency to make centrifugal movement outward along the radial direction of the centrifugal shaft 21 in the centrifugal space 201 under the action of centrifugal force. Since the contact mating surfaces of the first connecting member 22 and the second connecting member 23 with the centrifugal member 24 are both conical surfaces, the second connecting member 23 will be pushed to slide along the centrifugal shaft 21 under the action of the centrifugal movement of the centrifugal member 24; during the sliding process, the second connecting member 23 will compress the elastic member 25 and push the fork 31 to move along the centrifugal shaft 21. Therefore, when the centrifugal adjusting mechanism 2 rotates at a high speed, the centrifugal force exerted on the centrifugal member 24 has a component force on the second connecting member 23 that is greater than the elastic force exerted on it and the reaction force of the fork 31, which will push the second connecting member 23 and the fork 31 to move. While the fork 31 moves along the centrifugal shaft 21, it pushes the baffle 33 to rotate around the baffle shaft 34, gradually closing the adjustment opening of the oil shower box 4; and when the centrifugal adjusting mechanism 2 rotates at a low speed, the centrifugal force exerted on the centrifugal member 24 has a component force on the second connecting member 23 that is less than the elastic force exerted on it and the reaction force of the fork 31, the compressed elastic force is released, pushing the fork 31 to move in the opposite direction, so as to open the adjustment opening of the oil shower box 4 and restore it to the initial state (the adjustment opening is in the open state).

[0073] like Figure 8 As shown, the working principle of the liquid level regulating device for the gear box structure is specifically described by taking the first contact surface 221 and the second contact surface 231 as conical surfaces.

[0074] The total resistance of the second connecting member 23 is: F 阻

[0075] Among them, the total resistance F 阻 The elastic force F of the elastic member 25 弹 and the thrust F of the cam 32 to the fork 31 凸 composition,

[0076] That is F 阻 =F 弹 +F 凸 (1)

[0077] Elastic force of elastic member 25:

[0078] F 弹 = kx, (2)

[0079] Where k is the spring stiffness and x is the spring compression stroke;

[0080] Take the rotating inertial coordinate system where the centrifugal adjustment mechanism 2 is located as the reference coordinate system for analysis:

[0081] The formula for the centrifugal force on a single centrifugal member 24 (such as a steel ball) is:

[0082]

[0083] Among them, F1 is the centrifugal force on a single steel ball, m is the mass of a single steel ball, is the rotation angular velocity of the centrifugal regulating mechanism 2, r is the rotation radius of the steel ball;

[0084] At this time, the force on the steel ball is also the pressure F exerted by the second connecting member 23 on the steel ball. a and the pressure F exerted by the first connecting member 22 on the steel ball b , both of which pass through the center of mass of the steel ball and are perpendicular to the tangent direction of the matching surface between the connector and the steel ball.

[0085] At this time, F a and F b Can be decomposed into F ax 、F ay and F bx 、F by :

[0086]

[0087] α is the angle of the cone surface of the second connecting member 23, and β is the angle of the cone surface of the first connecting member 22;

[0088] At the same time, the steel ball also receives the friction force of the first connecting member 22:

[0089]

[0090] μ is the friction coefficient.

[0091] According to the force balance of the steel ball:

[0092]

[0093] Right now:

[0094]

[0095] According to the force balance of the second connecting member 23, there is:

[0096] F 阻 =nF ax (8)

[0097] n is the number of steel balls;

[0098] In summary, the force balance relationship between the speed and stroke of the centrifugal regulating mechanism 2 can be obtained:

[0099]

[0100] That is, at different rotational speeds, different elastic member strokes may correspond, that is, the rotational speed may be converted into displacement.

[0101] In addition, according to the above formula, the centrifugal force exerted on the centrifugal member 24 is proportional to the square of the rotational angular velocity of the entire mechanism. Therefore, at different rotational speeds of the gearbox, the component of the centrifugal force of the centrifugal member 24 is balanced by the elastic force exerted on the second connecting member 23 and the reaction force of the shift fork 31, so that the shift fork 31 has different displacements at different rotational speeds of the gearbox, and the higher the rotational speed, the smaller the opening of the adjustment opening of the oil shower box 4; the lower the rotational speed, the larger the opening of the adjustment opening of the oil shower box 4.

[0102] It can be seen from the above that the stroke of the fork 31 is proportional to the square of the rotational speed. Since the fork 31 and the rotational speed are in a nonlinear relationship, in a specific implementation, the oil volume can be controlled with a precise linear relationship by changing the shape of the oil spray box 4 and the baffle 33, or by changing the contact surface of the connecting part of the centrifugal adjustment mechanism 2 to a hyperbola or other curve.

[0103] In this embodiment, the adjustment parameters can be freely set according to different gearbox speed requirements and oil level requirements. Since the size of the adjustment opening is affected by many parameters such as gear ratio, number and quality of steel balls, contact surface angle of the centrifugal adjustment mechanism 2, elastic member stiffness, cam parameters, gravity of the baffle, size and shape of the adjustment opening of the oil pouring box 4, etc., in this embodiment, different oil volume control requirements at different speeds can be achieved through different design matching of the above parameters according to the actual situation in engineering applications.

[0104] In addition, this embodiment can achieve stepless adjustment of different oil volumes at different speeds. Compared with the binary adjustment of simply adjusting the opening and closing of the opening, the oil regulation is more precise.

[0105] In addition, the oil spray tank 4 in the embodiment of the present disclosure, in addition to storing the amount of oil and adjusting the oil level, can also provide lubrication and heat dissipation for various moving parts through the setting of the oil spray port 43. At the same time, when the vehicle is running at a large angle, resulting in no lubricating oil entering the oil spray tank 4, or the lubrication of a local position is poor, the internal oil stored in the oil spray tank 4 can also provide lubrication flow for a certain period of time.

[0106] like Figure 6 and Figure 7 As shown, an embodiment of the present disclosure further provides a gearbox structure, including the liquid level regulating device for the gearbox structure in the above embodiment.

[0107] The gearbox structure can be used in vehicle transmission devices with the gearbox as the core mechanical structure, such as automatic transmissions, manual transmissions and electric vehicle reducers.

[0108] The disclosed embodiments further provide a vehicle, comprising the gearbox structure in the above embodiments.

[0109] The gearbox structure and vehicle provided in the embodiments of the present disclosure correspond to the liquid level regulating device for the gearbox structure in the above-mentioned embodiments. Any optional items in the embodiments of the liquid level regulating device for the gearbox structure are also applicable to the embodiments of the gearbox structure and the vehicle, and will not be repeated here.

[0110] The above description is only a preferred embodiment of the present disclosure and an explanation of the technical principles used. Those skilled in the art should understand that the scope of disclosure involved in the present disclosure is not limited to the technical solutions formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above disclosed concept. For example, the above features are replaced with the technical features with similar functions disclosed in the present disclosure (but not limited to) by each other to form a technical solution.

[0111] In addition, although each operation is described in a specific order, this should not be understood as requiring these operations to be performed in the specific order shown or in a sequential order. Under certain circumstances, multitasking and parallel processing may be advantageous. Similarly, although some specific implementation details are included in the above discussion, these should not be interpreted as limiting the scope of the present disclosure. Some features described in the context of a separate embodiment can also be implemented in a single embodiment in combination. On the contrary, the various features described in the context of a single embodiment can also be implemented in multiple embodiments individually or in any suitable sub-combination mode.

[0112] Although the subject matter has been described in language specific to structural features and / or methodological logical actions, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or actions described above. On the contrary, the specific features and actions described above are merely example forms of implementing the claims.

[0113] Multiple embodiments of the present disclosure are described in detail above, but the present disclosure is not limited to these specific embodiments. Those skilled in the art can make various variations and modifications to the embodiments based on the concepts of the present disclosure, and these variations and modifications should all fall within the scope of protection required by the present disclosure.

Claims

1. A liquid level regulating device for a gear box structure, characterized in that: include: A first transmission gear; a second transmission gear meshingly connected to the first transmission gear, the second transmission gear being an existing gear in the gearbox structure or a separately provided gear, and the second transmission gear being meshingly connected to an internal gear in the gearbox structure; a centrifugal adjustment mechanism, coaxially connected to the first transmission gear, comprising a centrifugal shaft and a first connecting member and a second connecting member sleeved on the centrifugal shaft, a centrifugal space being formed between the first connecting member and the second connecting member, a plurality of centrifugal members being installed in the centrifugal space, and the centrifugal adjustment mechanism further comprising an elastic member arranged on a side of the second connecting member away from the first connecting member; A cam baffle mechanism, comprising a shift fork, a cam and a baffle, wherein the shift fork is connected to the baffle through the cam, one end of the shift fork is sleeved on the centrifugal shaft, and the shift fork is located between the second connecting member and the elastic member; An oil shower box is provided with an adjusting component corresponding to the baffle, the other end of the fork is slidably connected to a slide rail arranged on the oil shower box, the rotation of the second transmission gear can drive the first transmission gear to rotate, thereby driving the centrifugal member to perform centrifugal movement in the centrifugal space, and the centrifugal member can act on the second connecting member during centrifugal movement, and then act on the fork and the elastic member, pushing the fork to slide along the slide rail, and then driving the baffle to move through the cam to act on the adjusting component, so as to adjust the liquid level of the oil shower box.

2. The liquid level regulating device according to claim 1, characterized in that: The first contact surface of the first connecting member that cooperates with the centrifugal member is a conical surface, and the second contact surface of the second connecting member that cooperates with the centrifugal member is a conical surface.

3. The liquid level regulating device according to claim 1, characterized in that: A plurality of centrifugal tracks with central symmetry are arranged in the centrifugal space to correspond one by one to the plurality of centrifugal parts.

4. The liquid level regulating device according to claim 1, characterized in that: The regulating component is a regulating port opened on the oil shower box; The cam is fixed to the baffle and is in contact with the shift fork. The cam baffle mechanism also includes a baffle shaft installed on the oil spray box. The baffle is rotatably connected to the baffle shaft.

5. The liquid level regulating device according to claim 1, characterized in that: The position where the centrifugal shaft is connected to the second connecting member is a flat key, a spline or a keyway structure.

6. The liquid level regulating device according to claim 1, characterized in that: The second connecting member is provided with a connecting shaft for mounting the shift fork, the shift fork is sleeved on the outer circumference of the connecting shaft, one end of the connecting shaft is connected to the end face of the second connecting member, and the other end of the connecting shaft has a first limit member; the central opening of the connecting shaft allows the centrifugal shaft to pass through it.

7. The liquid level regulating device according to claim 6, characterized in that: The centrifugal shaft is provided with a second limiting member matched with the first limiting member, and the elastic member is sleeved between the first limiting member and the second limiting member.

8. The liquid level regulating device according to any one of claims 1 to 7, characterized in that: The centrifugal member is a steel ball or a steel column.

9. A gear box structure, characterized in that: The invention comprises the liquid level regulating device according to any one of claims 1 to 8.

10. A vehicle, characterized in that: Includes the gear box structure described in claim 9.

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