Safety protection device for speed reducer of electric vehicle

Abstract

The utility model discloses an electric vehicle speed reducer safety protection device in the technical field of electric vehicle speed reducers, which comprises a lower shell and a temperature sensor, the temperature sensor is arranged on the inner wall of the lower shell, the temperature sensor and the lower shell are fixed through a screw, a speed reduction wheel is arranged in the lower shell, and the speed reduction wheel is rotatably connected with the lower shell. The top of the lower shell is provided with an upper shell, the top of the upper shell is provided with an alarm, the upper shell is internally provided with a storage box, the storage box is internally provided with lubricating oil, the bottom of the storage box is provided with an oil outlet pipe, and one side of the oil outlet pipe is provided with an electromagnetic valve. Through the arrangement of the temperature sensor, the speed reducer, the rotating speed sensor, the upper shell, the alarm, the storage box and the oil outlet pipe, the protection function of the speed reducer is achieved, when the temperature in the device is too high, an alarm can be given to remind workers, meanwhile, automatic cooling can be achieved through lubricating oil, and using is safer.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric vehicle reducers, and in particular relates to a safety protection device for an electric vehicle reducer. Background Art

[0002] The reducer is an independent component consisting of a gear drive, worm drive, or gear-worm drive enclosed in a rigid housing. It is often used as a reduction transmission device between the prime mover and the working machine. It plays the role of matching speed and transmitting torque between the prime mover and the working machine or actuator, and is widely used in modern machinery.

[0003] The existing electric vehicle reducers still have some defects. Most of them do not have safety protection functions. When the reducer is working, the friction between its internal gears will generate heat. When the heat is too high, it may cause damage to the gears and reduce the service life of the reducer. For this reason, we propose a safety protection device for electric vehicle reducers. Utility Model Content

[0004] The purpose of the utility model is to provide a safety protection device for a speed reducer of an electric vehicle, so as to solve the problem that most of the above-mentioned background technologies do not have a safety protection function.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a safety protection device for an electric vehicle reducer, comprising a lower shell and a temperature sensor, the inner wall of the lower shell is provided with a temperature sensor, the temperature sensor and the lower shell are fixed by screws, a reduction wheel is provided inside the lower shell, the reduction wheel and the lower shell are rotatably connected, a speed sensor is provided on one side of the reduction wheel, an upper shell is provided on the top of the lower shell, the upper shell and the lower shell are fixed by screws, an alarm is provided on the top of the upper shell, the alarm and the speed sensor are electrically connected, a storage box is provided inside the upper shell, lubricating oil is provided inside the storage box, an oil outlet pipe is provided at the bottom of the storage box, and a solenoid valve is provided on one side of the oil outlet pipe.

[0006] Preferably, a refueling port is provided on the top of the upper shell, a driving gear is provided inside the lower shell, and the driving gear is rotatably connected to the lower shell.

[0007] Preferably, a first driven gear is provided on one side of the driving gear, the first driven gear is meshingly connected with the driving gear, and a rotating shaft is provided on one side of the first driven gear.

[0008] Preferably, a second driven gear is provided in the middle of the rotating shaft, and the second driven gear is meshingly connected with the reduction wheel.

[0009] Preferably, a first mounting hole is provided at one end of the lower shell, and a second mounting hole is provided at one end of the upper shell.

[0010] Preferably, a mounting plate is provided on one side of the lower shell, the mounting plate and the lower shell are fixedly connected, and a reinforcing plate is provided on the top of the mounting plate.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The protection function of the reducer is realized through the temperature sensor, reducer, speed sensor, upper shell, alarm, storage box and oil outlet pipe. When the temperature inside the device is too high, it will not only alarm to remind the staff, but also automatically cool down through lubricating oil, making it safer to use.

[0013] 2. The lubricating oil can be added through the provided refueling port, the deceleration function of the reducer is realized through the provided driving gear and two driven gears, and the fixation between the two shells is realized through the provided two mounting holes, thereby improving the stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0016] Figure 3 It is a schematic diagram of the structure of the utility model when viewed from above.

[0017] In the figure: 1. lower housing; 2. temperature sensor; 3. reduction wheel; 4. speed sensor; 5. upper housing; 6. alarm; 7. storage box; 8. oil outlet pipe; 9. refueling port; 10. driving gear; 11. first driven gear; 12. rotating shaft; 13. second driven gear; 14. first mounting hole; 15. second mounting hole; 16. mounting plate; 17. reinforcing plate. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-3The utility model provides a technical solution: a safety protection device for an electric vehicle reducer, comprising a lower shell 1 and a temperature sensor 2. The inner wall of the lower shell 1 is provided with the temperature sensor 2, and the temperature sensor 2 and the lower shell 1 are fixed by screws. A reduction wheel 3 is provided inside the lower shell 1, and the reduction wheel 3 is rotatably connected to the lower shell 1. A speed sensor 4 is provided on one side of the reduction wheel 3. An upper shell 5 is provided on the top of the lower shell 1, and the upper shell 5 and the lower shell 1 are fixed by screws. An alarm 6 is provided on the top of the upper shell 5, and the alarm 6 and the speed sensor 4 are electrically connected. A storage box 7 is provided inside the upper shell 5, and lubricating oil is provided inside the storage box 7. An oil outlet pipe 8 is provided at the bottom of the storage box 7, and a solenoid valve is provided on one side of the oil outlet pipe 8.

[0020] In this embodiment, when the electric vehicle reducer safety protection device is used, the temperature inside the device can be detected by the provided temperature sensor 2. When it is detected that the temperature is too high, the alarm 6 will be activated through the control center to remind the staff to deal with it in time to avoid damage to the gears due to high temperature. At the same time, the solenoid valve will be activated, and the lubricating oil inside the storage box 7 will flow out from the oil outlet pipe 8 under the action of gravity, which can not only cool the gears, but also achieve the effect of lubrication, thereby enhancing the function of the device. The speed sensor 4 can be used to detect the speed of the reduction wheel 3. When a gear fails, it can be discovered in time, making it safer to use.

[0021] Specifically, a refueling port 9 is provided on the top of the upper shell 5, a driving gear 10 is provided inside the lower shell 1, the driving gear 10 and the lower shell 1 are rotatably connected, a first driven gear 11 is provided on one side of the driving gear 10, the first driven gear 11 and the driving gear 10 are meshingly connected, a rotating shaft 12 is provided on one side of the first driven gear 11, a second driven gear 13 is provided in the middle of the rotating shaft 12, the second driven gear 13 and the reduction wheel 3 are meshingly connected, a first mounting hole 14 is provided at one end of the lower shell 1, a second mounting hole 15 is provided at one end of the upper shell 5, a mounting plate 16 is provided on one side of the lower shell 1, the mounting plate 16 and the lower shell 1 are fixedly connected, and a reinforcing plate 17 is provided on the top of the mounting plate 16.

[0022] In this embodiment, the addition of lubricating oil is achieved through the provided oil filling port 9, the speed reduction function of the reducer is achieved through the provided driving gear 10 and two driven gears, the fixation between the two shells is achieved through the provided two mounting holes, and the stability is improved. The provided mounting plate 16 facilitates the installation of the reducer, and the provided reinforcing plate 17 improves the stability of the structure.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A safety protection device for a reducer of an electric vehicle, comprising a lower housing (1) and a temperature sensor (2), Features: The inner wall of the lower shell (1) is provided with a temperature sensor (2), and the temperature sensor (2) and the lower shell (1) are fixed by screws. A reduction wheel (3) is provided inside the lower shell (1), and the reduction wheel (3) and the lower shell (1) are rotatably connected. A rotation speed sensor (4) is provided on one side of the reduction wheel (3). An upper shell (5) is provided on the top of the lower shell (1), and the upper shell (5) and the lower shell (1) are fixed by screws. An alarm (6) is provided on the top of the upper shell (5), and the alarm (6) and the rotation speed sensor (4) are electrically connected. A storage box (7) is provided inside the upper shell (5), and lubricating oil is provided inside the storage box (7). An oil outlet pipe (8) is provided at the bottom of the storage box (7), and a solenoid valve is provided on one side of the oil outlet pipe (8).

2. The electric vehicle reducer safety protection device according to claim 1, Features: A refueling port (9) is provided at the top of the upper shell (5), and a driving gear (10) is provided inside the lower shell (1), wherein the driving gear (10) and the lower shell (1) are rotatably connected.

3. The electric vehicle reducer safety protection device according to claim 2, Features: A first driven gear (11) is provided on one side of the driving gear (10); the first driven gear (11) is meshingly connected to the driving gear (10); and a rotating shaft (12) is provided on one side of the first driven gear (11).

4. The electric vehicle reducer safety protection device according to claim 3, Features: A second driven gear (13) is provided in the middle of the rotating shaft (12), and the second driven gear (13) is meshingly connected with the reduction wheel (3).

5. The electric vehicle reducer safety protection device according to claim 1, Features: One end of the lower shell (1) is provided with a first mounting hole (14), and one end of the upper shell (5) is provided with a second mounting hole (15).

6. The electric vehicle reducer safety protection device according to claim 1, Features: A mounting plate (16) is provided on one side of the lower shell (1), the mounting plate (16) and the lower shell (1) are fixedly connected, and a reinforcing plate (17) is provided on the top of the mounting plate (16).

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