Temperature control speed reducer

Abstract

The utility model relates to the technical field of speed reducers, in particular to a temperature control speed reducer which comprises a speed reducer body, the speed reducer body comprises a shell, a transmission pair is arranged in the shell, lubricating oil is arranged below the transmission pair in the shell, the lubricating oil infiltrates the lower portion of the transmission pair, and a temperature sensor used for detecting the temperature of the lubricating oil is arranged on one side of the lower portion of the shell. The temperature sensor is connected with a control panel located outside the shell, an output pipe installed on the shell and used for discharging lubricating oil is arranged on one side of the temperature sensor, a motor pump connected with the control panel is arranged on the output pipe, an air cooler connected with the control panel is arranged on the shell, and one side of the air cooler is connected with the output pipe. The other side of the air cooler is connected with an input pipe connected with the upper end of the shell, and an input port, communicated with the shell, of the input pipe is located on the upper portion of the transmission pair.

Description

Technical Field

[0001] The utility model relates to the technical field of reducers, in particular to a temperature-controlled reducer. Background Art

[0002] The reducer plays the role of matching the speed and transmitting torque between the motor and the working machine.

[0003] The use occasions of reducers are very different, all over the world, with winter and summer alternating, and a large temperature difference between day and night. In some important occasions such as underground coal mines and other special environments, the requirements for the working oil temperature of the reducer are more stringent.

[0004] Reducers generally use synthetic lubricants, using splash, oil bath or pressure forced lubrication. When starting work, the lubricant must not solidify; when running under continuous load, the maximum oil temperature must not exceed 90°C, and the oil temperature needs to be monitored in real time.

[0005] For example, on January 18, 2022, a patent with publication number CN215567793U, entitled "A patent for a reducer with a temperature monitoring module", can monitor the temperature of the equipment in real time through the temperature monitoring module; however, in the above documents, after the temperature of the reducer body working on the cooling tower exceeds the normal working temperature, it cannot be cooled by external components. The reducer body can only stop working and rely on its own heat dissipation, which is limited. Summary of the invention

[0006] In view of this, the purpose of the present invention is to provide a temperature-controlled reducer to solve the problem of limited heat dissipation.

[0007] Based on the above purpose, the utility model provides a temperature-controlled reducer, including a reducer body, the reducer body including a shell, a transmission pair is arranged in the shell, lubricating oil is arranged in the shell below the transmission pair, the lubricating oil infiltrates the lower part of the transmission pair, a temperature sensor for detecting the temperature of the lubricating oil is arranged on one side of the lower part of the shell, the temperature sensor is connected to a control panel located outside the shell, an output pipe for discharging the lubricating oil installed on the shell is arranged on one side of the temperature sensor, a motor pump connected to the control panel is arranged on the output pipe, an air cooler connected to the control panel is arranged on the shell, the output pipe is connected to one side of the air cooler, and an input pipe connected to the upper end of the shell is connected to the other side of the air cooler, and the input port of the input pipe connected to the shell is located at the upper part of the transmission pair.

[0008] Optionally, the transmission pair includes a first rotating shaft, a large gear is connected to the first rotating shaft, the lower part of the large gear is immersed in the lubricating oil, a second gear shaft meshing and transmission connected to the large gear is provided on one side of the first rotating shaft, a small gear is provided on the second gear shaft, and a third gear shaft transmission connected to the small gear is provided on one side of the second gear shaft, and the first rotating shaft and the third gear shaft are respectively connected to the working machine and the motor.

[0009] Optionally, an electric heater immersed in the lubricating oil is provided in the lower part of the shell, and the electric heater is connected to the control panel.

[0010] Optionally, the temperature sensor uses a platinum thermal resistor to detect the temperature of the lubricating oil.

[0011] Optionally, a guide plate connected to the inner wall of the shell is arranged below the input port, and the guide plate is arranged at an angle.

[0012] Optionally, the guide plate is hinged to the inner wall of the shell.

[0013] Optionally, the guide plate is hinged to the inner wall of the shell through a hinge shaft, a torsion spring is sleeved on the hinge shaft, and two ends of the torsion spring are respectively in contact with the guide plate and the inner wall of the shell.

[0014] The beneficial effects of the utility model: the utility model provides a temperature-controlled reducer. After the reducer body works, the transmission pair works. Since the lubricating oil infiltrates the lower part of the transmission pair, the lubricating oil flows to the transmission pair. When the temperature sensor detects that the temperature of the lubricating oil is greater than the set value, the motor pump and the air cooler are started by controlling the control panel. The motor pump extracts the high-temperature lubricating oil in the shell and enters the air cooler through the output pipe. The air cooler is installed in a natural ventilation environment. After the air cooler is started, the heat in the lubricating oil is taken away by the air. Then the dissipated lubricating oil is input into the shell through the input pipe and flows back into the shell of the reducer body to circulate the heat of the high-temperature reducer body and the high-temperature lubricating oil therein, thereby ensuring that the reducer body operates within a normal and stable range and avoiding abnormal wear of the internal transmission pair due to the reducer body exceeding the operating conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model 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 embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the partial structure inside the shell of the utility model;

[0018] Figure 3 for Figure 2 Schematic diagram of the top view structure.

[0019] In the figure: 1. reducer body; 2. housing; 3. lubricating oil; 4. large gear; 5. air cooler; 6. motor pump; 7. platinum thermal resistor; 8. electric heater; 9. output pipe; 10. input pipe; 11. guide plate. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0021] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0022] like Figures 1 to 3As shown, a temperature-controlled reducer comprises a reducer body 1, wherein the reducer body 1 comprises a shell 2, a transmission pair is arranged in the shell 2, a lubricating oil 3 is arranged in the shell 2 below the transmission pair, the lubricating oil 3 infiltrates the lower part of the transmission pair, a temperature sensor for detecting the temperature of the lubricating oil 3 is arranged on one side of the lower part of the shell 2, the temperature sensor is connected to a control panel located outside the shell 2, an output pipe 9 for discharging the lubricating oil 3 installed on the shell 2 is arranged on one side of the temperature sensor, a motor pump 6 connected to the control panel is arranged on the output pipe 9, an air cooler 5 connected to the control panel is arranged on the shell 2, one side of the air cooler 5 is connected to the output pipe 9, and the other side of the air cooler 5 is connected to an input pipe 10 connected to the upper end of the shell 2, and the input port of the input pipe 10 communicating with the shell 2 is located at the upper part of the transmission pair.

[0023] After the reducer body 1 works, the transmission pair works. Since the lubricating oil 3 infiltrates the lower part of the transmission pair, the lubricating oil 3 flows to the transmission pair. In addition, the operation of the transmission pair is also convenient for stirring the lubricating oil 3, so that the temperature of the lubricating oil 3 in the shell 2 is relatively uniform. When the temperature sensor detects that the temperature of the lubricating oil 3 is greater than 70°C, the motor pump 6 and the air cooler 5 are started through the control panel. The motor pump 6 completes the extraction of the high-temperature lubricating oil 3 and enters the air cooler 5 through the output pipe 9. The air cooler 5 is installed in a natural ventilation environment to take away the heat in the lubricating oil 3 through the air, and then the heat-dissipated lubricating oil 3 is input into the shell 2 through the input pipe 10. When the temperature continues to drop below 50°C, the motor pump 6 and the air cooler 5 stop running, and the reducer body 1 performs normal operation.

[0024] The control panel is connected to an alarm. When the temperature of the lubricating oil 3 in the reducer body 1 is higher than 85° C., the alarm sounds an alarm and controls the reducer body 1 to stop running.

[0025] The transmission pair includes a first rotating shaft, a large gear 4 is connected to the first rotating shaft, the lower part of the large gear 4 is immersed in the lubricating oil 3, a second gear shaft meshing and transmission connected with the large gear 4 is arranged on one side of the first rotating shaft, a small gear is arranged on the second gear shaft, and a third gear shaft transmission connected with the small gear is arranged on one side of the second gear shaft, and the first rotating shaft and the third gear shaft are respectively connected to the working machine and the motor.

[0026] The motor power is input from the shaft extension end of the third gear shaft (through the coupling) and transmitted to the third gear shaft; the third gear shaft meshes with the small gear in turn to transmit the motor power to the second gear shaft; the second gear shaft meshes with the large gear 4 to transmit the power of the second gear shaft to the first rotating shaft; the first rotating shaft then transmits the power of the first rotating shaft to the working machine through the coupling; the reducer converts the small torque and high speed of the motor into the large torque and low speed power transmission required by the working machine.

[0027] An electric heater 8 immersed in the lubricating oil 3 is arranged at the lower part of the shell 2. The electric heater 8 is connected to the control panel. When the temperature sensor detects that the temperature of the lubricating oil 3 is lower than 10°C, the electric heater 8 is started through the control panel to heat the lubricating oil 3. When the oil temperature is continuously heated to more than 20°C, the electric heater 8 is automatically disconnected and stops heating.

[0028] When the reducer body 1 is in a low temperature environment, the temperature is lower than the solidification point of the lubricating oil 3, or the reducer body 1 is in operation and the oil temperature of the lubricating oil 3 is lower than 10°C, the viscosity of the lubricating oil 3 is about 2000cSt, the friction inside the lubricating oil 3 increases, the power loss of the reducer body 1 increases, and the use efficiency decreases. In the above two cases, the control panel sends a command signal to the electric heater 8, so that the electric heater 8 is automatically powered on, the electrical energy is converted into thermal energy, the lubricating oil 3 continues to absorb heat, and the oil temperature is continuously increased. When the temperature of the lubricating oil 3 measured by the platinum thermal resistor 7 reaches 20°C, the control panel will send a command signal to the electric heater 8, the electric heater 8 automatically cuts off the power, stops heating, and ensures the normal operation of the reducer body 1.

[0029] The control panel adopts a distributed control system, which is referred to as DCS (Distributed Control System). It is based on a microprocessor and is a new generation of instrument control system that adopts the design principles of decentralized control functions, centralized display operations, and taking into account both division and autonomy and comprehensive coordination.

[0030] The temperature sensor uses a platinum thermal resistor 7 to detect the temperature of the lubricating oil 3. The platinum thermal resistor 7 monitors the temperature of the lubricating oil 3 in the reducer body 1 in real time, and the measured signal is transmitted to the DCS, thereby realizing the detection and control of the temperature.

[0031] A guide plate 11 connected to the inner wall of the housing 2 is provided below the input port. The guide plate 11 is tilted, and the lubricating oil 3 entering the housing 2 through the input port flows toward the transmission pair under the guidance of the guide plate 11, so as to lubricate the transmission pair.

[0032] The guide plate 11 is hinged to the inner wall of the shell 2 . When the lubricating oil 3 flows onto the guide plate 11 , the guide plate 11 swings to drive the air circulation in the shell 2 , thereby accelerating the temperature uniformity of the lubricating oil 3 in the shell 2 .

[0033] The guide plate 11 is hinged to the inner wall of the shell 2 via a hinge shaft, and a torsion spring is sleeved on the hinge shaft. The two ends of the torsion spring are respectively abutted or connected to the guide plate 11 and the inner wall of the shell 2. The setting of the torsion spring facilitates increasing the frequency of the swinging of the guide plate 11, further accelerating the temperature uniformity of the lubricating oil 3 in the shell 2.

[0034] A person skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0035] The embodiments of the present invention are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A temperature-controlled reducer, comprising a reducer body, wherein the reducer body comprises a housing, characterized in that: A transmission pair is arranged in the shell, and lubricating oil is arranged in the shell below the transmission pair, and the lubricating oil infiltrates the lower part of the transmission pair. A temperature sensor for detecting the temperature of the lubricating oil is arranged on one side of the lower part of the shell, and the temperature sensor is connected to a control panel located outside the shell. An output pipe for discharging the lubricating oil installed on the shell is arranged on one side of the temperature sensor, and a motor pump connected to the control panel is arranged on the output pipe. An air cooler connected to the control panel is arranged on the shell, and the output pipe is connected to one side of the air cooler, and an input pipe connected to the upper end of the shell is connected to the other side of the air cooler. The input port of the input pipe connected to the shell is located at the upper part of the transmission pair.

2. A temperature-controlled reducer according to claim 1, characterized in that: The transmission pair includes a first rotating shaft, a large gear is connected to the first rotating shaft, the lower part of the large gear is immersed in the lubricating oil, a second gear shaft meshing and transmission connected with the large gear is arranged on one side of the first rotating shaft, a small gear is arranged on the second gear shaft, and a third gear shaft transmission connected with the small gear is arranged on one side of the second gear shaft, and the first rotating shaft and the third gear shaft are respectively connected to the working machine and the motor.

3. A temperature-controlled reducer according to claim 1, characterized in that: An electric heater immersed in the lubricating oil is arranged at the lower part of the shell, and the electric heater is connected to the control panel.

4. A temperature-controlled reducer according to claim 1, characterized in that: The temperature sensor uses a platinum thermal resistor to detect the temperature of the lubricating oil.

5. A temperature-controlled reducer according to claim 1, characterized in that: A guide plate connected to the inner wall of the shell is arranged below the input port, and the guide plate is arranged obliquely.

6. A temperature-controlled reducer according to claim 5, characterized in that: The guide plate is hinged to the inner side wall of the shell.

7. A temperature-controlled reducer according to claim 6, characterized in that: The guide plate is hinged to the inner wall of the shell through a hinge shaft, a torsion spring is sleeved on the hinge shaft, and two ends of the torsion spring are respectively in contact with the guide plate and the inner wall of the shell.

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