A power take-off for an electric drive axle

Abstract

The utility model discloses a kind of power takeoff of electric drive bridge, it is related to power takeoff technical field, including: power takeoff body, input end and output end, cooling box, the inner wall of cooling box is equipped with air passage, cooling fan is installed in the inner wall of cooling box, the outer wall of first magnetic attraction ring is equipped with protective net, the inner wall of cooling box is equipped with thread reinforcing groove, the inner wall of thread reinforcing groove is equipped with thread reinforcing block, the outer wall of first mounting plate is equipped with mounting screw rod, the outer wall of second mounting plate is equipped with mounting screw groove.The utility model is equipped with cooling mechanism by installation, first the periphery of output end has temperature sensor, when temperature is too high, cooling fan in cooling box works automatically, air-blast cooling is carried out to output end, protective net is used to protect cooling fan, by first mounting plate and second mounting plate adhere and install cooling box is installed in the side of output end, then it is convenient to carry out cooling to output end.

Description

Technical Field

[0001] This utility model relates to the field of power take-off technology, specifically a power take-off for an electric drive bridge. Background Technology

[0002] The power take-off (PTO) of an electric drive axle is an important mechanical or mechatronic device. It extracts power from the main drive system of the electric drive axle and transmits it to the vehicle's auxiliary equipment. Through efficient, flexible, and reliable power transmission and control, the PTO supports the normal operation of auxiliary equipment, improving the overall performance and functional versatility of the vehicle. In electric and hybrid vehicles, the role of the PTO is particularly important, enabling the vehicle to provide a stable and reliable power source to auxiliary equipment without interrupting the main drive transmission.

[0003] Patent document CN220337446U discloses a power take-off (PTO), which states that "a PTO cylinder is installed on one side of the PTO housing, and the cylinder shaft of the PTO cylinder extends vertically into the PTO housing; a coupling sleeve is provided in the center hole of the input gear, and the coupling sleeve is circumferentially limited to the input gear. One end of the coupling sleeve extends out of the PTO housing, and its extended end is meshed with the gearbox PTO shaft through an end face tooth structure. The gearbox PTO shaft drives the coupling sleeve to rotate the input gear; the cylinder shaft extends into the coupling sleeve and is axially limited to the coupling sleeve. The cylinder shaft drives the coupling sleeve to move axially to realize the connection and disconnection between the coupling sleeve and the gearbox PTO shaft; when the speed of the gearbox PTO shaft decreases, the coupling sleeve automatically slides out of the meshing position under the action of torque, and the coupling sleeve and the gearbox PTO shaft can be automatically disconnected. This utility model can simplify the gear shifting structure and improve the gear shifting success rate; it can also automatically disconnect the power connection using its own structure to avoid back-dragging the engine."

[0004] However, one type of power take-off (PTO) in the aforementioned published documents mainly considers simplifying the gear shifting structure and improving the success rate of gear shifting; it can also use its own structure to automatically disconnect the power connection to avoid back-dragging the engine and the problem of not being able to cool the output end under high load or long-term operation.

[0005] In view of this, it is necessary to develop a cooling mechanism that can cool the output end under high load or long-term operation. Utility Model Content

[0006] The purpose of this utility model is to provide a power take-off (PTO) for an electric drive bridge to solve the technical problem mentioned in the background art of enabling the PTO of the electric drive bridge to have a cooling function.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a power take-off (PTO) for an electric drive bridge, comprising: a PTO body, an input end, and an output end, wherein the outer wall of the PTO body is provided with a cooling mechanism, which is used to cool the output end under high load or long-term operation.

[0008] The cooling mechanism includes a cooling box, which is installed at the bottom of the power take-off body and located on one side of the output end. The inner wall of the cooling box has a ventilation groove, a cooling fan is installed on the inner wall of the cooling box, a first magnetic ring is installed on the inner wall of the cooling box, a protective net is installed on the outer wall of the first magnetic ring, a second magnetic ring is installed on the outer wall of the protective net, a threaded reinforcement groove is provided on the inner wall of the cooling box, a threaded reinforcement block is installed on the inner wall of the threaded reinforcement groove, a first mounting plate is installed on the top of the cooling box, a mounting screw is installed on the outer wall of the first mounting plate, a second mounting plate is installed on the bottom of the power take-off body, the outer wall of the second mounting plate has a mounting screw groove, and one end of the mounting screw extends into the interior of the mounting screw groove.

[0009] Preferably, an input end is installed on the top of the power take-off body, an assembly plate is installed on the outer wall of the power take-off body, multiple sets of bolts are provided on the outer wall of the assembly plate, and an output end is movably installed on the bottom of the power take-off body.

[0010] Preferably, the outer wall of the cooling box is provided with a lubrication mechanism, which is used to facilitate lubrication of the output end.

[0011] Preferably, the lubrication mechanism includes a lubrication storage tank and an oil pump. The lubrication storage tank is installed on the outer wall of the cooling box. An oil inlet pipe is installed on the outer wall of the lubrication storage tank, and one end of the oil inlet pipe extends into the interior of the lubrication storage tank. A connector is installed on the outer wall of the oil inlet pipe.

[0012] Preferably, an oil pump is installed on the outer wall of the cooling box, a first pipe is installed at the oil inlet end of the oil pump, and one end of the first pipe extends into the interior of the lubrication storage box, and a second pipe is installed at the oil outlet end of the oil pump.

[0013] Preferably, a connecting block is installed on the outer wall of the cooling box, and a lubrication pipe is installed on the outer wall of the connecting block, with one end of the second pipe extending into the interior of the lubrication pipe.

[0014] Preferably, an auxiliary oil supply block is installed on the inner wall of the lubrication pipe.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model, by installing a cooling mechanism, cools the output end under high load or long-term operation. Existing power take-off units (PTOs) output power, but under high load or long-term operation, the output end temperature becomes too high, affecting normal operation. Therefore, this needs improvement. First, a temperature sensor is installed around the output end. When the temperature is too high, the cooling fan in the cooling box automatically operates to blow air and cool the output end. A protective net protects the cooling fan and is installed by adsorption using a first and second magnetic ring, and fixed in the threaded reinforcement groove by a twisting threaded reinforcement block, thus blocking the other side of the protective net and improving its installation stability. Then, the cooling box is attached to the first and second mounting plates and fixed in the mounting screw groove by a mounting screw, thus installing the cooling box on one side of the output end for convenient cooling.

[0017] 2. This utility model has a lubrication mechanism to facilitate lubrication of the output end. When the output end is in motion with the outside world, lubricating oil needs to be added periodically to reduce friction. Therefore, this needs to be improved. First, the oil inlet pipe is connected to the external pipe through a connector. Lubricating oil is added through the external pipe and flows into the lubrication storage tank. Then, the oil pump works to draw the lubricating oil from the lubrication storage tank through the first pipe and deliver it to the second pipe. The lubricating oil in the second pipe flows to the output end through the lubrication pipe and the auxiliary oil supply block to reduce friction. One end of the lubrication pipe is close to the side of the output end without affecting normal operation, so as to facilitate the spraying of lubricating oil. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the front structure of the power take-off body of this utility model;

[0019] Figure 2 This is a top view of the power take-off body of this utility model.

[0020] Figure 3 This is a schematic diagram of the side structure of the power take-off body of this utility model;

[0021] Figure 4 This is a schematic diagram of the side structure of the cooling box of this utility model;

[0022] Figure 5 This is a schematic diagram of the lubrication mechanism of this utility model.

[0023] In the diagram: 1. Power take-off body; 2. Input end; 3. Assembly plate; 4. Bolt; 5. Output end; 6. Cooling box; 7. Ventilation slot; 8. Cooling fan; 9. First magnetic ring; 10. Second magnetic ring; 11. Protective net; 12. Threaded reinforcement groove; 13. Threaded reinforcement block; 14. First mounting plate; 15. Mounting screw; 16. Second mounting plate; 17. Mounting screw groove; 18. Lubrication storage tank; 19. Oil inlet pipe; 20. Connector; 21. Oil pump; 22. First pipe; 23. Second pipe; 24. Connecting block; 25. Lubrication pipe; 26. Auxiliary oil supply block. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] Please see Figure 1 , Figure 2 and Figure 3A power take-off (PTO) for an electric drive axle includes: a PTO body 1, an input end 2, and an output end 5. The input end 2 is mounted on the top of the PTO body 1. An assembly plate 3 is mounted on the outer wall of the PTO body 1, and multiple sets of bolts 4 are provided on the outer wall of the assembly plate 3. The output end 5 is movably mounted on the bottom of the PTO body 1. The power of the PTO typically comes from the main drive system of the electric drive axle. In electric vehicles, this usually means that the power comes from an electric motor and is transmitted to the PTO through a drive shaft or gear system. The PTO body 1 is installed in a designated position by the assembly plate 3 and the bolts 4. When power is needed, the PTO engages through the input end 2, transmitting the power of the main drive system to the output end 5 of the PTO. The output end 5 of the PTO is connected to auxiliary equipment, transmitting the adjusted power to these devices. The auxiliary equipment uses this power to operate, such as hydraulic pumps, air compressors, etc. The input end 2 of the PTO is typically connected to the main drive shaft or gear of the electric drive axle via a flange or coupling. The PTO is equipped with a manual or automatic control mechanism for engaging and disengaging the clutch mechanism.

[0028] Please see Figure 3 and Figure 4 The outer wall of the power take-off body 1 is equipped with a cooling mechanism. This mechanism is used to cool the output end 5 under high load or long-term operation. The cooling mechanism includes a cooling box 6, which is installed at the bottom of the power take-off body 1 and located on one side of the output end 5. The inner wall of the cooling box 6 has a ventilation groove 7, a cooling fan 8, a first magnetic ring 9, a protective net 11, and a second magnetic ring 10. The inner wall of the cooling box 6 has a threaded reinforcement groove 12, and a threaded reinforcement block 13 is installed on the inner wall of the threaded reinforcement groove 12. A first mounting plate 14 is installed on the top of the cooling box 6, and a mounting screw 15 is installed on the outer wall of the first mounting plate 14. A second mounting plate 16 is installed at the bottom of the power take-off body 1, and a mounting screw groove 17 is provided on the outer wall of the second mounting plate 16. One end of the power take-off (PTO) extends into the mounting screw groove 17. The existing PTO body 1 outputs power from the output end 5. Under high load or long-term operation, the output end 5 will overheat and cause it to malfunction. Therefore, this needs to be improved. First, there is a temperature sensor around the output end 5. When the temperature is too high, the cooling fan 8 in the cooling box 6 will automatically work to blow air to cool the output end 5. The protective net 11 is used to protect the cooling fan 8. It is installed by adsorption through the first magnetic ring 9 and the second magnetic ring 10, and fixed to the threaded reinforcement groove 12 by twisting the threaded reinforcement block 13, thus blocking the other side of the protective net 11 and improving the installation stability of the protective net 11. Then, the cooling box 6 is attached to the first mounting plate 14 and the second mounting plate 16, and fixed to the mounting screw groove 17 by the mounting screw 15. The cooling box 6 is then installed on one side of the output end 5, which facilitates the cooling of the output end 5.

[0029] Please see Figure 4 and Figure 5 The outer wall of the cooling chamber 6 is equipped with a lubrication mechanism for convenient lubrication of the output end 5. The lubrication mechanism includes a lubrication storage tank 18 and an oil pump 21. The lubrication storage tank 18 is installed on the outer wall of the cooling chamber 6, and an oil inlet pipe 19 is installed on the outer wall of the lubrication storage tank 18, with one end of the oil inlet pipe 19 extending into the interior of the lubrication storage tank 18. A connector 20 is installed on the outer wall of the oil inlet pipe 19. The oil pump 21 is installed on the outer wall of the cooling chamber 6, and a first pipe 22 is installed at the oil inlet end of the oil pump 21, with one end of the first pipe 22 extending into the interior of the lubrication storage tank 18. A second pipe 23 is installed at the oil outlet end of the oil pump 21. A connecting block 24 is installed on the outer wall of the cooling chamber 6, and a lubrication pipe 25 is installed on the outer wall of the connecting block 24. The second pipe 23... One end extends into the interior of the lubrication pipe 25. An auxiliary oil supply block 26 is installed on the inner wall of the lubrication pipe 25. When the output end 5 is connected to the outside, lubricating oil needs to be added regularly to reduce friction. Therefore, this needs to be improved. First, the oil inlet pipe 19 is connected to the external pipe through the connector 20. Lubricating oil is added through the external pipe and flows into the lubrication storage tank 18. Then, the oil pump 21 works to draw the lubricating oil in the lubrication storage tank 18 through the first pipe 22 and deliver it to the second pipe 23. The lubricating oil in the second pipe 23 flows to the output end 5 through the lubrication pipe 25 and the auxiliary oil supply block 26 to reduce friction. One end of the lubrication pipe 25 will be very close to the side of the output end 5 without affecting normal operation, so as to facilitate the spraying of lubricating oil.

[0030] Working principle: The power take-off (PTO) typically draws power from the main drive system of the electric drive axle. In electric vehicles, this usually means the power comes from the electric motor and is transmitted to the PTO via a drive shaft or gear system. The PTO body 1 is installed in a designated position using assembly plate 3 and bolts 4. When power is needed, the PTO engages through its input end 2, transmitting the power from the main drive system to its output end 5. The output end 5 of the PTO connects to auxiliary equipment, transmitting the adjusted power to these devices. These auxiliary devices utilize this power to operate, such as hydraulic pumps and air compressors. The input end 2 of the power take-off (PTO) is usually connected to the main drive shaft or gear of the electric drive axle via a flange or coupling. The PTO is equipped with a manual or automatic control mechanism for engaging and disengaging the clutch mechanism. The existing PTO body 1 outputs power from its output end 5. Under high load or long-term operation, this can lead to excessively high temperatures at the output end 5, disrupting normal operation. Therefore, improvements are needed. First, a temperature sensor is installed around the output end 5. When the temperature is too high, the cooling fan 8 in the cooling box 6 automatically operates to blow air and cool the output end 5. The protective mesh 11 is used... To protect the cooling fan 8, it is attached and installed using the first magnetic ring 9 and the second magnetic ring 10, and fixed in the threaded groove 12 by twisting the threaded reinforcing block 13. This blocks the other side of the protective net 11, thereby improving the installation stability of the protective net 11. Subsequently, the cooling box 6 is attached to the first mounting plate 14 and the second mounting plate 16, and fixed in the mounting screw 15 into the mounting screw groove 17. This allows the cooling box 6 to be installed on one side of the output end 5, facilitating the cooling of the output end 5. When the output end 5 is in contact with the outside world, lubricating oil needs to be added regularly to reduce friction. Therefore, improvements are needed. First, the oil inlet pipe 19 is connected to an external pipe through the connector 20. Lubricating oil is added through the external pipe and flows into the lubrication storage tank 18. Then, the oil pump 21 works to draw in the lubricating oil in the lubrication storage tank 18 through the first pipe 22 and deliver it to the second pipe 23. The lubricating oil in the second pipe 23 flows to the output end 5 through the lubrication pipe 25 and the auxiliary oil supply block 26 to reduce friction. One end of the lubrication pipe 25 will be very close to the side of the output end 5 without affecting normal operation, so as to facilitate the spraying of lubricating oil.

[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A power take-off unit for an electric drive bridge, characterized in that, It includes: a power take-off body (1), an input end (2) and an output end (5). The outer wall of the power take-off body (1) is provided with a cooling mechanism, which is used to cool the output end (5) under high load or long-term operation. The cooling mechanism includes a cooling box (6), which is installed at the bottom of the power take-off body (1) and is located on one side of the output end (5). The inner wall of the cooling box (6) is provided with a ventilation groove (7), and a cooling fan (8) is installed on the inner wall of the cooling box (6). A first magnetic ring (9) is installed on the inner wall of the cooling box (6), and a protective net (11) is installed on the outer wall of the first magnetic ring (9). A second magnetic ring (10) is installed on the outer wall of the protective net (11). The inner wall of the box (6) is provided with a threaded reinforcement groove (12), and a threaded reinforcement block (13) is installed on the inner wall of the threaded reinforcement groove (12). A first mounting plate (14) is installed on the top of the cooling box (6), and a mounting screw (15) is installed on the outer wall of the first mounting plate (14). A second mounting plate (16) is installed on the bottom of the power take-off body (1). A mounting screw groove (17) is provided on the outer wall of the second mounting plate (16), and one end of the mounting screw (15) extends into the interior of the mounting screw groove (17).

2. The power take-off unit for an electric drive bridge according to claim 1, characterized in that: The power take-off body (1) has an input end (2) installed on its top, an assembly plate (3) installed on its outer wall, and multiple sets of bolts (4) provided on the outer wall of the assembly plate (3). The power take-off body (1) has an output end (5) movably installed on its bottom.

3. The power take-off unit for an electric drive bridge according to claim 1, characterized in that: The outer wall of the cooling box (6) is provided with a lubrication mechanism, which is used to facilitate lubrication of the output end (5).

4. The power take-off unit for an electric drive bridge according to claim 3, characterized in that: The lubrication mechanism includes a lubrication storage tank (18) and an oil pump (21). The lubrication storage tank (18) is installed on the outer wall of the cooling box (6). An oil inlet pipe (19) is installed on the outer wall of the lubrication storage tank (18), and one end of the oil inlet pipe (19) extends into the interior of the lubrication storage tank (18). A connector (20) is installed on the outer wall of the oil inlet pipe (19).

5. The power take-off unit for an electric drive bridge according to claim 4, characterized in that: An oil pump (21) is installed on the outer wall of the cooling box (6). A first pipe (22) is installed at the oil inlet end of the oil pump (21), and one end of the first pipe (22) extends into the interior of the lubrication storage box (18). A second pipe (23) is installed at the oil outlet end of the oil pump (21).

6. The power take-off unit for an electric drive bridge according to claim 5, characterized in that: The cooling box (6) has a connecting block (24) installed on its outer wall, and a lubrication pipe (25) is installed on the outer wall of the connecting block (24), with one end of the second pipe (23) extending into the interior of the lubrication pipe (25).

7. The power take-off unit for an electric drive bridge according to claim 6, characterized in that: An auxiliary oil supply block (26) is installed on the inner wall of the lubrication pipe (25).

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