Oil mass self-adjusting system for transmission

Abstract

The oil mass self-adjusting system comprises a transmission shell, a transmission oil cavity is formed in the transmission shell, the side face of the transmission shell is connected with an oil pump module, and an oil pump is arranged in the oil pump module. A first oil outlet is formed in the oil pump, the first oil outlet, the first oil duct, the bypass oil duct, the second oil duct and the oil pipe are communicated with one another, and the other end of the oil pipe is not closed and located in the transmission oil cavity; an inverted trapezoidal oil storage cavity is formed in the transmission shell and horizontally located below the oil pipe, and a plurality of layers of blocks are arranged in the oil storage cavity. By adjusting the pressure of the first oil outlet, lubricating oil can be sequentially guided to the oil pipe from the first oil duct and flows to the oil storage cavity from the oil pipe, so that the oil pressure of the forced oil outlet system is stabilized, the amount of the lubricating oil in the oil cavity of the transmission is reduced on the premise of ensuring the normal operation of the transmission, and the oil stirring resistance during the operation of the transmission is reduced; the transmission efficiency of the transmission is improved, and the effect of reducing temperature rise is achieved.

Description

Technical Field

[0001] The utility model belongs to the field of commercial vehicle transmission lubrication, relates to a transmission, and in particular to an oil quantity self-regulating system for the transmission. Background Art

[0002] In the commercial vehicle transmission market, with the continuous upgrading and improvement of products, product design requirements have gradually shifted from early requirements for performance, low failure rates, and low prices to requirements for high comfort, high fuel efficiency, and low maintenance. Controlling and optimizing transmission lubricant levels is a key area of ​​research and improvement for transmission manufacturers. For example, Eaton's transmissions optimize forced injection throughout the entire tank, reducing refueling volume and improving transmission efficiency. Scania's transmissions utilize oil reservoir design and electronic control to manage the internal fluid volume of the transmission.

[0003] Transmission lubricant, a core component for maintaining proper transmission operation, performs cooling, cleaning, and lubrication functions. Currently, high-end, high-torque manual and automatic transmissions often utilize a combination of forced and splash lubrication. Reducing the amount of transmission lubricant added generally improves transmission power transmission efficiency and reduces heat generation, effectively minimizing temperature rise. However, the assembly angle and road conditions of commercial vehicle transmissions can cause forward or backward surges of transmission lubricant within the transmission, potentially leading to localized insufficient lubrication. Complex operating conditions, such as heavy loads and slow speeds, can cause excessive stress within the transmission, leading to localized high temperatures. To address these issues, overfilling is commonly used in the commercial vehicle sector to prevent air from being drawn into the forced lubrication system's oil pump and to improve the reliability of splash lubrication. However, overfilling can increase gear resistance during transmission operation, reducing operating efficiency and causing excessive temperature rise. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the present invention proposes an oil quantity self-regulating system for a transmission to solve the technical problem in the existing technology of ensuring the power transmission efficiency of the transmission while taking into account sufficient local lubrication.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A self-regulating oil quantity system for a transmission includes a transmission housing, wherein the transmission housing contains a transmission oil chamber, and is characterized in that a side surface of the transmission housing is connected to an oil pump module, wherein the oil pump module contains an oil pump.

[0007] The oil pump is provided with a first oil outlet, the first oil outlet is connected with one end of the first oil channel, the other end of the first oil channel is connected with the tapered bypass port, the tapered bypass port is connected with one end of the bypass oil channel, and a second oil outlet is provided on the other end of the bypass oil channel close to the transmission oil chamber, the second oil outlet is connected with one end of the second oil channel, the other end of the second oil channel is connected with one end of an oil pipe horizontally mounted on the transmission housing, the other end of the oil pipe is located in the transmission oil chamber, and the other end of the oil pipe is not closed.

[0008] An inverted trapezoidal oil storage cavity with a closed bottom and an open top is installed in the transmission housing, and the oil storage cavity is horizontally located below the oil pipe.

[0009] The utility model also has the following technical features:

[0010] The conical bypass port is connected with the head of the conical top cap, a spring is vertically installed at the tail of the conical top cap, a screw plug for pre-tightening the conical top cap is installed above the spring, and the screw plug is plugged at the other end of the bypass oil channel.

[0011] The interior of the oil storage cavity is provided with multiple layers of barriers.

[0012] The bottom of the oil storage chamber is independently provided with a hanging ear and a fixing rod in sequence near one end of the oil pump module. The hanging ear is hinged to the hanging ear assembly point at one end of the S-shaped adjustment rod, and the fixing rod is fastened to the transmission housing through a nut.

[0013] The other end of the S-shaped adjusting rod is connected to the transmission housing through a mounting flange.

[0014] The other end of the S-shaped adjusting rod is provided with an adjusting knob.

[0015] The screw corner is located between the assembly flange and the mounting point of the hanging ear.

[0016] The mounting flange is fixed on the transmission housing via nuts.

[0017] The oil pump module is fastened to the transmission housing by a plurality of bolts.

[0018] Compared with the prior art, the present invention has the following beneficial technical effects:

[0019] (I) The present invention proposes a method of regulating the pressure of the first oil outlet so that the lubricating oil can be sequentially guided from the first oil passage to the oil pipe and then to the oil storage chamber, thereby stabilizing the oil pressure of the forced oil outlet system. While ensuring the normal operation of the transmission, the amount of lubricating oil in the transmission oil chamber is reduced, the oil stirring resistance during the operation of the transmission is reduced, the transmission efficiency of the transmission is improved, and the temperature rise is reduced.

[0020] (II) The inverted trapezoidal oil storage chamber proposed in the present invention can ensure that when the vehicle is traveling on a slope at any angle, the lubricating oil in the oil storage chamber automatically flows back to the transmission oil chamber as the trapezoidal angle changes, and re-participates in the operation and determines the amount of returned oil. This solves the technical problems of insufficient lubrication splashing at the front of the transmission caused by the rearward movement of the lubricating oil when the vehicle goes uphill, and air inhalation at the rear oil inlet of the transmission caused by the forward movement of the lubricating oil when the vehicle goes downhill.

[0021] (III) The assembly position of the S-shaped adjustment rod proposed in the present invention makes the system adaptable to any vehicle. Since the power chain of the entire vehicle is usually designed to form an angle with the ground that is higher in the front and lower in the back, the balancing mechanism can meet the angle design of different vehicles.

[0022] (IV) The oil storage chamber proposed in the present invention is designed with multiple layers of barriers to prevent the oil from shaking back and forth in the oil storage chamber due to vehicle acceleration, braking or road bumps.

[0023] (V) Compared with the existing technology, the present invention adopts a fully mechanical design, has no control system such as a valve body, and uses a minimum of parts to solve the problems encountered by commercial vehicle transmissions in terms of lubricating oil quantity and pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a cross-sectional schematic diagram of the internal structure of the transmission housing.

[0025] Figure 2 Schematic diagram of the connection structure between the transmission housing and the oil storage chamber.

[0026] Figure 3 It is a structural diagram of the S-shaped adjusting rod.

[0027] Figure 4 It is a structural diagram of the oil storage chamber.

[0028] Figure 5 It is a schematic diagram of the main view of the oil storage chamber.

[0029] The meanings of the various numbers in the figure are: 1-transmission housing, 2-transmission oil chamber, 3-oil pump module, 4-oil pump, 5-first oil outlet, 6-first oil channel, 7-conical bypass port, 8-bypass oil channel, 9-second oil outlet, 10-second oil channel, 11-oil pipe, 12-oil storage chamber, 13-multi-layer block, 14-conical top cap, 15-spring, 16-screw plug, 17-hanging ear, 18-fixing rod, 19-S-shaped adjusting rod, 20-hanging ear assembly point, 21-nut, 22-assembly flange, 23-adjusting knob, 24-screw corner, 25-bolt.

[0030] The specific contents of the present invention are further explained in detail below with reference to the embodiments. DETAILED DESCRIPTION

[0031] It should be noted that, unless otherwise specified, all devices and components in the present invention are devices and components known in the prior art.

[0032] In accordance with the above technical solution, specific embodiments of the present invention are given below. It should be noted that the present invention is not limited to the following specific embodiments, and all equivalent changes made on the basis of the technical solution of this application fall within the protection scope of the present invention.

[0033] Example:

[0034] This embodiment provides an oil self-regulating system for a transmission, comprising a transmission housing 1, wherein the transmission housing 1 contains a transmission oil chamber 2. Figure 1 As shown, the side surface of the transmission housing 1 is connected to the oil pump module 3 , and the oil pump module 3 contains the oil pump 4 .

[0035] like Figure 1 and Figure 2 As shown, the oil pump 4 is provided with a first oil outlet 5, the first oil outlet 5 is connected with one end of the first oil channel 6, the other end of the first oil channel 6 is connected with the tapered bypass port 7, the tapered bypass port 7 is connected with one end of the bypass oil channel 8, the other end of the bypass oil channel 8 is provided with a second oil outlet 9 on the side close to the transmission oil chamber 2, the second oil outlet 9 is connected with one end of the second oil channel 10, the other end of the second oil channel 10 is connected with one end of an oil pipe 11 horizontally mounted on the transmission housing 1, the other end of the oil pipe 11 is located in the transmission oil chamber 2, and the other end of the oil pipe 11 is not closed.

[0036] like Figure 1 and Figure 4 As shown, an inverted trapezoidal oil storage chamber 12 with a closed bottom end and an open top end is installed in the transmission housing 1 , and the oil storage chamber 12 is horizontally located below the oil pipe 11 .

[0037] like Figure 1 As shown, the conical bypass port 7 is connected with the head of the conical top cap 14, and a spring 15 is vertically installed at the tail of the conical top cap 14. A screw plug 16 for pre-tightening the conical top cap 14 is installed above the spring 15, and the screw plug 16 is plugged in the other end of the bypass oil channel 8.

[0038] like Figure 2 and Figure 5 As shown, a hanging ear 17 and a fixing rod 18 are independently provided in sequence at one end of the bottom of the oil storage chamber 12 near the oil pump module 3. The hanging ear 17 is hinged to the hanging ear assembly point 20 at one end of the S-shaped adjustment rod 19, and the fixing rod 18 is fastened to the transmission housing 1 through a nut 21.

[0039] like Figure 1 and Figure 4 As shown, multiple layers of barriers 13 are provided inside the oil storage chamber 12 .

[0040] like Figure 2 and Figure 3 As shown, the other end of the S-shaped adjusting rod 19 is connected to the transmission housing 1 through a mounting flange 22 .

[0041] like Figure 3 As shown, the other end of the S-shaped adjusting rod 19 is provided with an adjusting knob 23 .

[0042] like Figure 3 As shown, a screw corner 24 is located between the mounting flange 22 and the lug mounting point 20 .

[0043] like Figure 2 As shown, the mounting flange 22 is fixed to the transmission housing 1 via nuts 21 .

[0044] like Figure 1 As shown, the oil pump module 3 is fastened to the transmission housing 1 by a plurality of bolts 25 .

[0045] Specifically in this embodiment, by changing the k value of the spring 15, the diameter of the conical bypass port 7 and the pre-compression amount of the spring 15, the oil pressure limit of the first oil outlet 5 can be adjusted. That is, when the oil pressure of the first oil outlet 5 is higher than this limit, the conical top cap 14 will be lifted up by the lubricating oil, thereby filling the oil storage chamber 12 with lubricating oil.

[0046] Specifically, in this embodiment, when the oil reservoir 12 is filled with lubricating oil, excess lubricating oil will overflow, thereby ensuring a normal amount of lubricating oil in the transmission for operation. When the vehicle is traveling downhill or uphill and more lubricating oil is needed to operate the transmission, the lubricating oil stored in the oil reservoir 12 overflows from the front or rear end due to the pitch of the vehicle.

[0047] Specifically, in this embodiment, by changing the values ​​of the front angle and the rear angle of the oil storage chamber 12, the amount of lubricating oil overflow of the vehicle at different pitch angles can be changed;

[0048] Specifically, in this embodiment, by completely sealing the front half or the rear half of the oil storage chamber 12, the oil in the oil storage chamber 12 will not overflow when the vehicle is going downhill or uphill, so that the amount of lubricating oil inside the transmission does not change under such working conditions.

[0049] Specifically in this embodiment, by changing the distance between the front half and the rear half of the oil storage cavity 12 , the maximum oil storage amount inside the oil storage cavity 12 can be adjusted.

[0050] Specifically, in this embodiment, by adding a switch control valve at the lower part of the oil storage chamber 12, the amount of lubricating oil in the oil storage chamber 12 can be controlled as needed.

[0051] Specifically in this embodiment, the multi-layer baffles 13 form a plurality of relatively independent but interconnected small oil storage spaces in the oil storage chamber 12, ensuring that the lubricating oil can flow in the oil storage chamber 12, but the lubricating oil liquid in the oil storage chamber 12 will not form a large surge during braking or acceleration.

[0052] Specifically in this embodiment, the initial position of the oil storage chamber 12 can be leveled by adjusting the adjustment knob 23 on the S-shaped adjustment rod 19 to ensure that the oil storage chamber 12 is parallel to the horizontal plane when the transmission housing 1 is installed on any vehicle body.

[0053] Specifically, in this embodiment, when assembling the adjustment system, by turning the adjustment knob 23 on the S-shaped adjustment rod 19, since the S-shaped adjustment rod 19 is assembled on the transmission housing 1, the S-shaped adjustment rod 19 rotates about the adjustment knob 23, thereby driving the ear mounting point 20 on the other end of the S-shaped adjustment rod 19 to move upward or downward. Since the ear mounting point 20 is inserted into the ear 17 at the front end of the oil reservoir 12, it drives the oil reservoir 12 to rotate about the fixed rod 18.

[0054] Specifically, in this embodiment, by changing the relative distance between the screw corners 24 and the position of the lug 17 on the oil storage chamber 12 , the ratio of the unit rotation angle of the adjustment knob 23 to the rotation angle of the oil storage chamber 12 can be changed.

[0055] Specifically, in this embodiment, by adding a fixing rod on the axis of the fixing rod 18 of the oil storage chamber 12 , the stability of the oil storage chamber 12 under the bumpy working condition of the entire vehicle can be improved.

[0056] Specifically, in this embodiment, when the oil pump 4 is outputting at a high flow rate, the lubricating oil pressure at the first oil outlet 5 exceeds a preset pressure, causing the lubricating oil to flow through the first oil passage 6 to the tapered bypass port 7. The tapered top cap 14 in the tapered bypass port 7 is pushed away from the tapered working surface, and the lubricating oil flows through the bypass oil passage 8 and the second oil outlet 9 to the second oil passage 10 and oil pipe 11, and then flows into the oil reservoir 12 from the other end of the oil pipe 11. When the lubricating oil pressure at the first oil outlet 5 is less than the preset pressure, the tapered top cap 14 is not pushed away from the tapered working surface, and the lubricating oil is not discharged from the second oil outlet 9. In this way, the oil pressure at the first oil outlet 5 of the oil pump 4 is stabilized, thereby stabilizing the forced lubrication system of the transmission.

Claims

1. An oil quantity self-regulating system for a transmission, comprising a transmission housing (1), wherein the transmission housing (1) contains a transmission oil chamber (2), and wherein: The transmission housing (1) is connected to the oil pump module (3) on its side, and the oil pump module (3) contains an oil pump (4); The oil pump (4) is provided with a first oil outlet (5), the first oil outlet (5) is connected to one end of the first oil channel (6), the other end of the first oil channel (6) is connected to the tapered bypass port (7), the tapered bypass port (7) is connected to one end of the bypass oil channel (8), the other end of the bypass oil channel (8) is provided with a second oil outlet (9) on a side close to the transmission oil chamber (2), the second oil outlet (9) is connected to one end of the second oil channel (10), the other end of the second oil channel (10) is connected to one end of an oil pipe (11) horizontally mounted on the transmission housing (1), the other end of the oil pipe (11) is located in the transmission oil chamber (2), and the other end of the oil pipe (11) is not closed; An oil storage chamber (12) with a closed bottom and an open top is installed in the transmission housing (1), and the oil storage chamber (12) is horizontally located below the oil pipe (11).

2. The oil quantity self-regulating system for a transmission according to claim 1, characterized in that: The conical bypass port (7) is connected to the head of the conical top cap (14), and a spring (15) is vertically installed at the tail of the conical top cap (14). A screw plug (16) for pre-tightening the conical top cap (14) is installed above the spring (15). The screw plug (16) is plugged at the other end of the bypass oil channel (8).

3. The oil quantity self-regulating system for a transmission according to claim 1, wherein: The oil storage cavity (12) is provided with multiple layers of barriers (13) inside.

4. The oil quantity self-regulating system for a transmission according to claim 1, wherein: The bottom of the oil storage chamber (12) is independently provided with a hanging ear (17) and a fixing rod (18) at one end close to the oil pump module (3). The hanging ear (17) is hinged to the hanging ear assembly point (20) at one end of the S-shaped adjustment rod (19), and the fixing rod (18) is fastened to the transmission housing (1) through a nut (21).

5. The oil quantity self-regulating system for a transmission according to claim 4, characterized in that: The other end of the S-shaped adjustment rod (19) is connected to the transmission housing (1) via a mounting flange (22).

6. The oil quantity self-regulating system for a transmission according to claim 4, characterized in that: The other end of the S-shaped adjustment rod (19) is provided with an adjustment knob (23).

7. The oil quantity self-regulating system for a transmission according to claim 5, characterized in that: A screw corner (24) is located between the assembly flange (22) and the lug assembly point (20).

8. The oil quantity self-regulating system for a transmission according to claim 5, wherein: The mounting flange (22) is fixed to the transmission housing (1) via a nut (21).

9. The oil quantity self-regulating system for a transmission according to claim 1, wherein: The oil pump module (3) is fastened to the transmission housing (1) via a plurality of bolts (25).

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