Lubrication monitoring structure of rotary speed reducer

Abstract

A lubrication monitoring structure of a rotary speed reducer comprises a shell provided with a parallel shaft speed reducer and a liquid level sensor arranged on the shell, and is characterized in that a lubricating oil channel which is used for guiding lubricating oil into the shell and is perpendicular to an input shaft of the parallel shaft speed reducer is formed in the top of the shell; and the liquid level sensor is arranged at a position where the lubricating oil duct is communicated with the oil outlet end of the electronic oil pump of the rotary speed reducer, and is in signal transmission connection with a motor controller of the parallel shaft speed reducer. The liquid level sensor is arranged at the position where the lubricating oil channel is communicated with the oil outlet end of the electronic oil pump, synchronous monitoring of the oil outlet condition of the electronic oil pump and the oil level in the speed reducer is achieved, and real-time signals of the liquid level sensor are transmitted to a whole machine control system through the signal return device. The whole machine control system gives an alarm according to the real-time signal when lubrication of the rotary speed reducer is insufficient, and an operator is prompted to handle in time.

Description

Technical Field

[0001] The utility model relates to a lubrication monitoring structure for a rotary reducer, which is used for lubrication and oil level monitoring of the rotary reducer. Background Art

[0002] With the maturity of new energy electric drive technology, the trend of electrification of construction machinery has become increasingly obvious. In electric excavator slewing reducers, due to the high speed of the motor, the lubrication requirements for the mechanical parts are also increased accordingly. Therefore, the amount of lubricating oil is particularly important in electric excavator slewing reducers. Good lubrication can extend the life of the slewing reducer. The oil level is the body parameter that maintenance personnel pay most attention to. When the internal oil level continues to decrease, it will also affect the lubrication of the bearings and gears in the reducer, resulting in the heat dissipation effect of the reducer being not obvious, and the body will fail after long-term use. Traditional oil level monitoring uses a visual oil mirror or oil dipstick in the reducer for visual observation, but in actual applications it is difficult to require users to check the lubricating oil level frequently. In electric excavator slewing reducers, a liquid level sensor is used to sense the oil level signal in real time to realize automatic monitoring of the oil level in the reducer. However, the automatic oil level monitoring of the slewing reducer has the following problems:

[0003] 1. The rotary reducer with an electronic oil pump pumps oil into the reducer housing to form a circulating lubrication for the bearings and gears. The liquid level sensor only monitors the liquid level in the housing and cannot monitor the oil output of the electronic oil pump.

[0004] 2. When the reducer is insufficiently lubricated, the signal cannot be transmitted to the excavator's control system to generate an alarm. Utility Model Content

[0005] The lubrication monitoring structure of the rotary reducer provided by the utility model installs a liquid level sensor at a position where the lubricating oil channel is connected to the oil outlet end of the electronic oil pump, thereby realizing synchronous monitoring of the oil outlet condition of the electronic oil pump and the oil level in the reducer, and transmitting the real-time signal of the liquid level sensor to the whole machine control system through the signal feedback device. The whole machine control system issues an alarm when the rotary reducer is insufficiently lubricated according to the real-time signal, prompting the operator to deal with it in time.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] The lubrication monitoring structure of the rotary reducer includes a housing on which the parallel axis reducer is installed and a liquid level sensor installed on the housing. The structure is characterized in that a lubricating oil channel is opened on the top of the housing to guide the lubricating oil into the housing and is perpendicular to the input shaft of the parallel axis reducer. The liquid level sensor is installed at a position where the lubricating oil channel is connected to the oil outlet end of the electronic oil pump of the rotary reducer, and is connected to the signal transmission of the motor controller of the parallel axis reducer.

[0008] Preferably, the lubricating oil channel is connected to the bearing hole of the parallel shaft reducer through the through-hole oil on the shell, an oil outlet pipe connected to the oil outlet end of the electronic oil pump is installed on the shell, the oil outlet pipe is connected to the oil inlet end of the lubricating oil channel, and the liquid level sensor extends into the oil inlet end of the lubricating oil channel.

[0009] Preferably, the oil outlet pipe is threadedly mounted on the housing and perpendicular to the lubricating oil channel, and the liquid level sensor is threadedly mounted on the lubricating oil channel to seal the oil inlet end of the lubricating oil channel.

[0010] Preferably, the liquid level sensor is connected to a signal return device based on Beidou positioning for signal transmission, and the signal return device is connected to a whole machine control system for signal transmission.

[0011] Preferably, the liquid level sensor is a photoelectric liquid level sensor.

[0012] The beneficial effects of the utility model are:

[0013] The lubrication monitoring structure of the rotary reducer of the present invention opens a lubricating oil channel on the top of the reducer housing, and installs a liquid level sensor at the position where the lubricating oil channel is connected to the oil outlet end of the electronic oil pump. The liquid level sensor not only monitors the oil level in the lubricating oil channel, thereby monitoring the oil level in the reducer, but also monitors the oil discharge condition of the oil outlet end of the electronic oil pump, thereby monitoring the oil discharge condition of the electronic oil pump, thereby realizing synchronous monitoring of the oil discharge condition of the electronic oil pump and the oil level in the reducer, and transmits the monitoring signal to the motor controller. The motor controller controls the motor speed on the input shaft according to the monitoring signal, and reduces the motor speed when lubrication is insufficient, thereby reducing the input speed of the parallel shaft reducer and protecting the gears in the reducer.

[0014] The liquid level sensor is connected to the whole machine control system through the signal transmission of the signal return device based on Beidou positioning. The signal return device collects the real-time sensing signal of the liquid level sensor and transmits the real-time signal to the whole machine control system after logical processing. The whole machine control system will issue an alarm when the rotary reducer is insufficiently lubricated based on the real-time signal, prompting the operator to deal with it in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the lubrication monitoring structure of the rotary reducer in a specific implementation manner.

[0016] Figure 2 This is the connection schematic diagram of the liquid level sensor, motor controller, signal feedback equipment and complete machine control system. DETAILED DESCRIPTION

[0017] The following combination Figures 1 and 2 The embodiments of the present utility model are described in detail.

[0018] The lubrication monitoring structure of the rotary reducer includes a housing 1 on which a parallel axis reducer A is installed and a liquid level sensor 2 installed on the housing 1. It is characterized in that a lubricating oil channel 3 is opened on the top of the housing 1 to introduce lubricating oil into the housing and is perpendicular to the input shaft B of the parallel axis reducer A. The liquid level sensor 2 is installed at a position where the lubricating oil channel 3 is connected to the oil outlet end C of the electronic oil pump of the rotary reducer, and is connected to the signal transmission of the motor controller of the parallel axis reducer A.

[0019] The lubrication monitoring structure of the rotary reducer described above is provided with a lubricating oil channel 3 on the top of the reducer housing 1, and a liquid level sensor 2 is installed at a position where the lubricating oil channel 3 is connected to the oil outlet port C of the electronic oil pump. The liquid level sensor 3 not only monitors the oil level in the lubricating oil channel, thereby monitoring the oil level in the reducer, but also monitors the oil discharge condition of the electronic oil pump oil outlet port C, thereby monitoring the oil discharge condition of the electronic oil pump, thereby realizing synchronous monitoring of the oil discharge condition of the electronic oil pump and the oil level in the reducer, and transmitting the monitoring signal to the motor controller. The motor controller controls the motor speed on the input shaft B according to the monitoring signal, and reduces the motor speed when lubrication is insufficient, thereby reducing the input speed of the parallel shaft reducer and protecting the gears in the reducer.

[0020] The lubricating oil passage 3 is connected to the bearing hole of the parallel shaft reducer A through the through hole 11 on the housing 1. The housing 1 is provided with an oil outlet pipe 4 connected to the oil outlet end C of the electronic oil pump. The oil outlet pipe 4 is connected to the oil inlet end of the lubricating oil passage 3. The liquid level sensor 2 extends into the oil inlet end of the lubricating oil passage 3. Figure 1 As shown, the parallel shaft reducer A is a reduction assembly with an input shaft B and an output shaft parallel to each other. The oil outlet pipe 4 is connected to the oil outlet end C of the electronic oil pump and is connected to the oil inlet end of the lubricating oil channel 3. The oil pumped by the electronic oil pump enters the lubricating oil channel 3 through the oil outlet pipe 4, and enters the bearing assembled in the bearing hole from the through-hole oil 11, and then flows downward along the gear shaft on the bearing to lubricate the gears and bearings. The liquid level sensor 2 extends into the oil inlet end of the lubricating oil channel 3 to monitor the liquid level at the oil inlet end of the lubricating oil channel 3 and the oil outlet condition of the oil outlet pipe 4. When it is monitored that there is no oil at the oil inlet end, it indicates that the oil level in the housing 1 is decreasing, and the electronic oil pump has no oil pumped into the lubricating oil channel 3. The motor controller controls the speed of the motor on the input shaft B according to the monitoring signal to reduce the wear of the gears and bearings when lubrication is insufficient.

[0021] The oil outlet pipe 4 is threadedly mounted on the housing 1 and perpendicular to the lubricating oil passage 3. The liquid level sensor 2 is threadedly engaged with the lubricating oil passage 3 to seal the oil inlet of the lubricating oil passage 3. The lubricating oil passage 3 is located at the top of the housing. The use of the liquid level sensor 3 to seal the oil inlet of the lubricating oil passage 3 eliminates the need for sealing the end face of the lubricating oil passage 3 with a sealing member. The liquid level sensor 3 serves as both a monitoring element and a sealing element for the end face of the lubricating oil passage 3, simplifying the lubricating oil passage structure.

[0022] The liquid level sensor 2 is connected to a Beidou-based signal return device for signal transmission, which is in turn connected to the entire machine control system. The liquid level sensor 2 is connected to the entire machine control system via the Beidou-based signal return device. The signal return device collects the real-time sensing signal from the liquid level sensor and transmits the real-time signal to the entire machine control system after logical processing. Based on the real-time signal, the entire machine control system issues an alarm when the slewing reducer is insufficiently lubricated, prompting the operator to take timely action. The alarm information, excavator status signal, and excavator location information are then transmitted to the excavator management cloud platform via a 4G or 5G communication network.

[0023] The liquid level sensor 3 is a photoelectric liquid level sensor. Photoelectric liquid level sensors have high precision, are applicable to a wide range of media, and can be installed at any angle. Compared with traditional capacitive liquid level sensors, they are not affected by metal particles and are therefore suitable for use in mechanical equipment.

[0024] The above is a complete description of the technical solutions of the embodiments of the present invention in conjunction with the accompanying drawings. It should be noted that the embodiments described are only part of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

Claims

1. The lubrication monitoring structure of the rotary reducer includes a housing with a parallel shaft reducer and a liquid level sensor mounted on the housing, and is characterized by: A lubricating oil channel is provided on the top of the shell to introduce the lubricating oil into the shell and is perpendicular to the input shaft of the parallel axis reducer. The liquid level sensor is installed at a position where the lubricating oil channel is connected to the oil outlet end of the electronic oil pump of the rotary reducer, and is connected to the signal transmission of the motor controller of the parallel axis reducer.

2. The lubrication monitoring structure of the rotary reducer according to claim 1, characterized in that: The lubricating oil channel is connected to the bearing hole of the parallel shaft reducer through the through-hole oil on the shell. An oil outlet pipe connected to the oil outlet end of the electronic oil pump is installed on the shell. The oil outlet pipe is connected to the oil inlet end of the lubricating oil channel, and the liquid level sensor extends into the oil inlet end of the lubricating oil channel.

3. The lubrication monitoring structure of the rotary reducer according to claim 2, characterized in that: The oil outlet pipe is threadedly mounted on the housing and is perpendicular to the lubricating oil passage. The liquid level sensor is threadedly mounted on the lubricating oil passage to seal the oil inlet end of the lubricating oil passage.

4. The lubrication monitoring structure of the rotary reducer according to claim 1, characterized in that: The liquid level sensor is connected to the signal return device based on Beidou positioning for signal transmission, and the signal return device is connected to the whole machine control system for signal transmission.

5. The lubrication monitoring structure of the rotary reducer according to claim 1, characterized in that: The liquid level sensor is a photoelectric liquid level sensor.

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