Oil drainage system and operation machine

Abstract

The utility model relates to the field of operation machinery, and discloses an oil drainage system and operation machinery. The oil drainage system comprises an oil drainage branch, a first control valve and a cleanliness detection device, wherein the oil drainage branch comprises a pumping device, a first control valve and a cleanliness detection device; a liquid inlet of the pumping device is communicated with a speed reduction device; the first control valve is respectively connected with a liquid outlet of the pumping device, the speed reducer and the oil tank, and can control any one of the speed reducer and the oil tank to be communicated with the liquid outlet of the pumping device; the cleanliness detection device is connected between the first control valve and the speed reduction device and is used for detecting cleanliness information of the oil liquid; and the control assembly is electrically connected with the cleanliness detection device and sends alarm information according to the cleanliness information. By means of the cleanliness detection device, cleanliness information of the lubricating oil can be detected in the circulating flowing process of the lubricating oil, alarm information can be sent through the control assembly according to the cleanliness information, the lubricating oil can be replaced in time, and therefore the lubricating oil can be replaced only when needing to be replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of working machinery, in particular to an oil draining system and a working machinery. Background Art

[0002] The speed reducer usually plays roles such as transmitting power, reducing speed and increasing torque, and is an indispensable part of the working machinery. There is lubricating oil inside the speed reducer, which is used to provide a good lubricating environment for the operation of components such as gears, bearings and transmission shafts, and take away the heat of components such as gears, bearings and transmission shafts.

[0003] In order to ensure the lubrication effect of the lubricating oil, the lubricating oil in the speed reducer is usually discharged and replaced regularly by using a hose.

[0004] This regular replacement method may replace the lubricating oil when the quality of the lubricating oil is good, or replace the lubricating oil after the quality of the lubricating oil has deteriorated for a long time, resulting in premature or delayed replacement of the lubricating oil.

[0005] In addition, in the related art, the lubricating oil is discharged through a hose, and the flow rate of the lubricating oil is slow, resulting in low discharge efficiency of the lubricating oil. Summary of the Utility Model

[0006] In view of this, the utility model provides an oil draining system and a working machinery to solve the problem that the regular replacement method in the related art is likely to cause premature or delayed replacement of the lubricating oil.

[0007] In a first aspect, the utility model provides an oil draining system for draining oil from a speed reducer, including:

[0008] An oil draining branch, including a pumping device, a first control valve and a cleanliness detection device. The liquid inlet of the pumping device is used to communicate with the speed reducer. The first control valve is respectively connected to the liquid outlet of the pumping device, the speed reducer and the fuel tank, and can control either the speed reducer or the fuel tank to communicate with the liquid outlet of the pumping device. The cleanliness detection device is connected between the first control valve and the speed reducer and is used to detect the cleanliness information of the oil;

[0009] A control component, electrically connected to the cleanliness detection device, and the control component is used to send an alarm message according to the cleanliness information.

[0010] In an optional embodiment, the oil draining system further includes an alarm device, the alarm device is electrically connected to the control component, and the alarm device alarms in response to the cleanliness information;

[0011] And / or, both the pumping device and the first control valve are electrically connected to the control component, the control component is configured to control the pumping device to perform state switching, and the control component is further configured to control the first control valve to perform state switching.

[0012] In an alternative embodiment, the oil drain branch further includes an oil detection device configured to detect the oil quantity in the reduction gear, and the oil detection device is electrically connected to the control component.

[0013] In an alternative embodiment, the oil drain system further includes an instruction input component electrically connected to the control component and configured to input a control instruction to the control component.

[0014] In an alternative embodiment, the reduction gear is provided with an air inlet.

[0015] In an alternative embodiment, the oil drain system further includes a check valve disposed at the air inlet, and the conducting direction of the check valve is from the outside to the inside of the reduction gear.

[0016] In an alternative embodiment, the oil drain system further includes a filter member disposed at the air inlet.

[0017] In an alternative embodiment, the check valve includes a valve body, a sphere, and an elastic member;

[0018] Wherein, along the direction from the outside to the inside of the reduction gear, the valve body has a first limiting plate and a second limiting plate disposed at intervals, the first limiting plate is provided with a first flow hole, and the second limiting plate is provided with a second flow hole;

[0019] The sphere is disposed between the first limiting plate and the second limiting plate and is configured to be in sealing cooperation with the first flow hole, and the elastic member connects the second limiting plate and the sphere and is configured to clamp the sphere between the elastic member and the first limiting plate.

[0020] In a third aspect, the present utility model further provides a work machine including the oil drain system as described above or the reduction gear as described above.

[0021] In an alternative embodiment, at least two reduction gears are provided;

[0022] Wherein, each reduction gear is provided with a corresponding oil drain branch, the oil drain branches of the front and rear swing reduction gears are independently arranged without interference with each other, improving the reliability of the oil drain branch; or, the reduction gears are all connected to the oil drain branch through a second control valve, and the second control valve can control any one of the reduction gears to be connected to the oil drain branch.

[0023] The oil draining system provided by the present utility model can change the oil pumping direction of the pumping device through the first control valve, so that the lubricating oil circulates or is discharged. Through the cleanliness detection device, the cleanliness information of the lubricating oil can be detected during the circulation of the lubricating oil. Through the control component, an alarm message can be sent according to the cleanliness information, so as to replace the lubricating oil in time, so that the replacement can be carried out only when the lubricating oil needs to be replaced, and the situation of premature or delayed replacement of the lubricating oil will not occur.

[0024] The working machine provided by the present utility model includes all the above advantages of the oil draining system because it includes the oil draining system of the present utility model. Description of the Drawings

[0025] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained according to these drawings without creative efforts.

[0026] Figure 1 It is a schematic structural diagram of the oil draining system according to an embodiment of the present utility model;

[0027] Figure 2 It is a schematic diagram of the state of the oil draining system according to an embodiment of the present utility model applied to a working machine;

[0028] Figure 3 It is a schematic structural diagram of the one-way valve according to an embodiment of the present utility model;

[0029] Figure 4 It is the relationship between the motor speed of the pumping device and the pressure value of the oil in the reduction gear according to an embodiment of the present utility model.

[0030] Description of the Reference Numerals:

[0031] 1. Oil draining branch; 101. Pumping device; 102. First control valve; 103. Cleanliness detection device; 104. Oil detection device; 105. Transition block; 2. Control component; 3. Display device; 4. Instruction input component; 5. One-way valve; 501. Valve body; 5011. First limit plate; 5012. Second limit plate; 502. Sphere; 503. Elastic member; 6. Filter element; 7. Guard plate; 8. Fuel tank; 9. Reduction gear; 10. Platform. Detailed Embodiments

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. Based on the embodiments of the present utility model, those skilled in the art can achieve the following without creative efforts.

[0033] The following will describe Figures 1 to 4 , with reference to, the oil draining system provided in the embodiments of the present utility model.

[0034] Specifically, the oil draining system is used to drain oil for the reduction gear 9, and the oil draining system includes an oil draining branch 1 and a control component 2.

[0035] Among them, the oil draining branch 1 includes a pumping device 101, a first control valve 102, and a cleanliness detection device 103. The liquid inlet of the pumping device 101 is used to communicate with the reduction gear 9. For example, the pumping device 101 includes an oil pump and a motor, the motor is drivingly connected to the oil pump and drives the oil pump to rotate, and the liquid inlet of the oil pump is communicated with the reduction gear 9.

[0036] The first control valve 102 is respectively connected to the liquid outlet of the pumping device 101, the reduction gear 9, and the fuel tank 8, and can control either the reduction gear 9 or the fuel tank 8 to communicate with the liquid outlet of the pumping device 101. For example, the first control valve 102 is set as a reversing valve, and the first control valve 102 includes a first working position and a second working position. In the state where the first control valve 102 is in the first working position, the liquid outlet of the pumping device 101 is communicated with the reduction gear 9, and in the state where the first control valve 102 is in the second working position, the liquid outlet of the pumping device 101 is communicated with the fuel tank 8. Further, the first control valve 102 may further include a third working position. In the state where the first control valve 102 is in the third working position, the first control valve 102 is closed, and neither the reduction gear 9 nor the fuel tank 8 is communicated with the liquid outlet of the pumping device 101.

[0037] The cleanliness detection device 103 is connected between the first control valve 102 and the reduction gear 9 and is used to detect the cleanliness information of the oil. For example, the cleanliness detection device 103 is connected between the inlet end of the first control valve 102 and the reduction gear 9, or between the outlet end of the first control valve 102 and the reduction gear 9. Optionally, the cleanliness detection device 103 is set as an oil cleanliness sensor. It should be noted that the cleanliness detection device 103 is a product in the prior art, and it can detect the cleanliness information of the oil by means of laser scattering, absorption spectroscopy, conductivity measurement, etc. This application does not involve the improvement of the cleanliness detection device 103, so it will not be elaborated herein.

[0038] The control component 2 is electrically connected to the cleanliness detection device 103, and the control component 2 is used to send an alarm message according to the cleanliness information. For example, the control component 2 includes an input circuit, a comparison circuit, and an output circuit that are electrically connected in sequence. Among them, the input circuit is electrically connected to the cleanliness detection device 103 and is used to transmit the cleanliness information to the comparison circuit. The comparison circuit is used to compare the cleanliness information with the cleanliness threshold, and under the condition that the cleanliness information exceeds the cleanliness threshold, an alarm message is output through the output circuit.

[0039] In this embodiment, during use, the liquid outlet of the pumping device 101 can be first connected to the speed reduction device 9 through the first control valve 102. During the operation of the pumping device 101, the lubricating oil in the speed reduction device 9 is pumped out and returns to the speed reduction device 9 through the first control valve 102. During the circulating flow of the lubricating oil, the cleanliness detection device 103 can detect the cleanliness information of the lubricating oil and transmit it to the control component 2.

[0040] The control component 2 sends an alarm message according to the cleanliness information. For example, the alarm message can be sent to the operator. The operator switches the state of the first control valve 102 according to the alarm message, so that the first control valve 102 connects the liquid outlet of the pumping device 101 to the fuel tank 8. During the operation of the pumping device 101, the lubricating oil in the speed reduction device 9 is pumped out and discharged to the fuel tank 8 through the first control valve 102. Of course, the control component 2 can also directly transmit the alarm message to the first control valve 102 and the pumping device 101 to control the state switching of the first control valve 102 and the pumping device 101 to complete the oil discharge process.

[0041] With such a setting, the oil discharge system provided by the present utility model can change the oil pumping direction of the pumping device 101 through the first control valve 102 to make the lubricating oil circulate or be discharged. Through the cleanliness detection device 103, the cleanliness information of the lubricating oil can be detected during the circulating flow of the lubricating oil. Through the control component 2, an alarm message can be sent according to the cleanliness information to timely replace the lubricating oil, so that the lubricating oil can be replaced only when it needs to be replaced, and the situation of premature or delayed replacement of the lubricating oil will not occur.

[0042] In addition, in the present utility model, during the flow of the lubricating oil, the lubricating oil is detected by the cleanliness detection device 103. Since the uniformity of the oil liquid is better during the flow process, the accuracy of the detection result can be improved, and the influence of pollutant precipitation on the detection result can be reduced. In addition, limited by the detection principle of the cleanliness detection device 103, some cleanliness detection devices 103 can only detect the cleanliness of the oil liquid during the flow of the oil liquid. Therefore, the oil discharge system of the present utility model is suitable for the cleanliness detection device 103 adopting this detection principle.

[0043] In addition, during the process of discharging the lubricating oil, the pumping device 101 provides pumping power to avoid the problem of too slow discharge rate of the lubricating oil caused by too low temperature, etc., and can improve the discharge speed of the lubricating oil.

[0044] Optionally, the oil pump of the pumping device is set as a screw pump. The screw pump has a uniform output flow rate, is not sensitive to the viscosity and cleanliness of the oil fluid, is more suitable for discharging the oil fluid, and can improve the discharge speed. Of course, the oil pump can also be set as a gear pump.

[0045] In some embodiments provided by the present utility model, the oil discharge system further includes an alarm device. The alarm device is electrically connected to the control component 2. The alarm device gives an alarm in response to the cleanliness information. For example, the alarm device is electrically connected to the output circuit of the control component 2 to receive the alarm information output by the output circuit.

[0046] In this embodiment, the control component 2 sends an alarm message to the alarm device according to the cleanliness information, so that the alarm device gives an alarm, thereby sending an alarm message to the operator through the alarm device to prompt the operator that the lubricating oil needs to be replaced. The operator can switch the state of the first control valve 102 according to the alarm message, so that the first control valve 102 connects the liquid outlet of the pumping device 101 and the fuel tank 8, and switches the state of the pumping device 101 to start it and pump oil.

[0047] Optionally, the alarm device may include a display device 3. The display device 3 can display the alarm information to alarm the operator. Further, the display device 3 can also be used to display the cleanliness information so that the operator can intuitively understand the cleanliness of the lubricating oil.

[0048] Alternatively, the alarm device includes an audible and visual alarm to transmit the alarm information to the operator through the audible and visual alarm.

[0049] Of course, the control component 2 is not limited to sending the alarm information to the operator. For example, in other embodiments provided by the present utility model, both the pumping device 101 and the first control valve 102 are electrically connected to the control component 2. The control component 2 is used to control the state switching of the pumping device 101, and the control component 2 is also used to control the state switching of the first control valve 102. For example, both the first control valve 102 and the motor of the pumping device 101 are electrically connected to the output circuit of the control component 2. Optionally, the control component 2 is used to control the start-stop or rotation speed of the pumping device 101, and the control component 2 is also used to control the first control valve 102 to switch between different working positions.

[0050] In this embodiment, the control component 2 can send an alarm message to the first control valve 102 according to the cleanliness information to control the first control valve 102 to switch its state, so that the first control valve 102 can connect the liquid outlet of the pumping device 101 to the fuel tank 8. Similarly, the control component 2 can send an alarm message to the pumping device 101 according to the cleanliness information to control the pumping device 101 to start, so that the pumping device 101 pumps the lubricating oil in the reduction gear 9 to the fuel tank 8 through the first control valve 102. In this way, manual intervention can be reduced and the automation level of the oil draining system can be improved.

[0051] Optionally, the control component 2 can control the first control valve 102 to connect the liquid outlet of the pumping device 101 and the reduction gear 9 at every preset time interval, control the pumping device 101 to start, and detect the cleanliness of the lubricating oil through the cleanliness detection device 103, so as to realize the function of automatically detecting the lubricating oil at every preset time interval and improve the automation effect.

[0052] Of course, the oil draining system is not limited to automatically detecting or discharging the lubricating oil. For example, in some embodiments provided by the present utility model, the oil draining system further includes a command input component 4. The command input component 4 is electrically connected to the control component 2 and is used to input a control command to the control component 2. Optionally, the command input component 4 can be an operation switch, an operation handle, an operation button or a control screen.

[0053] In this embodiment, the operator can input a control command to the control component 2 through the command input component 4 to control the first control valve 102 to switch its state and control the pumping device 101 to switch its state through the control command, so as to realize the detection or discharge of the lubricating oil.

[0054] Specifically, when it is necessary to detect the cleanliness of the lubricating oil, the operator can input a control command to the control component 2 through the command input component 4 to control the first control valve 102 to connect the liquid outlet of the pumping device 101 to the reduction gear 9 through the control command and control the pumping device 101 to start. When it is necessary to discharge the lubricating oil, the operator can input a control command to the control component 2 through the command input component 4 to control the first control valve 102 to connect the liquid outlet of the pumping device 101 to the fuel tank 8 through the control command and control the pumping device 101 to start. When it is neither necessary to detect the lubricating oil nor to discharge the lubricating oil, the operator can input a control command to the control component 2 through the command input component 4 to control the first control valve 102 to switch to the closed working position through the control command and control the pumping device 101 to stop.

[0055] With such a setting, the operator can manually control the oil draining system to detect the cleanliness of the lubricating oil or drain the lubricating oil according to actual needs. For example, after receiving an alarm message, the operator can manually control the oil draining system to drain the lubricating oil. Or when performing maintenance or repair on the speed reduction device 9, the operator can manually control the oil draining system to detect or drain the lubricating oil.

[0056] In some embodiments provided by the present utility model, the oil draining branch 1 further includes an oil liquid detection device 104. The oil liquid detection device 104 is used to detect the oil liquid volume in the speed reduction device 9. The oil liquid detection device 104 is electrically connected to the control component 2. For example, the oil liquid detection device 104 is electrically connected to the input circuit of the control component 2, and the input circuit transmits the oil liquid volume to the comparison circuit. The comparison circuit is used to compare the oil liquid volume with a preset oil liquid volume, and under the condition that the oil liquid volume is less than or equal to the preset oil liquid volume, transmits a deceleration instruction message to the pumping device 101 through the output circuit.

[0057] In this embodiment, by setting the oil liquid detection device 104 and electrically connecting the oil liquid detection device 104 to the control component 2, the control component 2 can obtain the oil liquid volume in the speed reduction device 9. For example, under the condition that the oil liquid volume is lower than the preset oil liquid volume, the control component 2 can control the pumping device 101 to decelerate to reduce the pumping flow rate of the pumping device 101, thereby avoiding the problem that the pumping device 101 is damaged due to cavitation when the oil liquid volume in the speed reduction device 9 is too low.

[0058] Optionally, the oil liquid detection device 104 can be set as a pressure sensor. For example, the pressure sensor is connected between the liquid inlet of the pumping device 101 and the speed reduction device 9 to represent the oil liquid volume through the pressure value P of the oil liquid. Or, the oil liquid detection device 104 can also be set as a liquid level sensor to represent the oil liquid volume through the liquid level information of the oil liquid.

[0059] Optionally, taking the oil liquid detection device 104 being set as a pressure sensor, the oil pump of the pumping device being set as a screw pump, and being driven by a motor as an example for elaboration. The calculation formula for the output flow rate Q of the screw pump is as follows:

[0060] Q = N × V P × η V

[0061] In the above formula, Q is the output flow rate of the screw pump, N is the motor speed of the pumping device, V P is the displacement of the screw pump, and η V is the volumetric efficiency of the screw pump.

[0062] Refer to Figure 4 As shown, when the pressure value P is greater than the third pressure threshold P L3When the pressure value is P, the control component controls the motor to operate at the first rotational speed so that the hydraulic fluid can be quickly discharged. For example, the first rotational speed can be the maximum rotational speed of the motor. When the pressure value P is lower than the third pressure threshold P L3 and greater than the second pressure threshold P L2 the control component controls the rotational speed of the motor to decrease, and the output flow rate of the screw pump decreases accordingly. Moreover, the rotational speed of the motor changes in a positive correlation with the pressure value, so that the output flow rate of the screw pump decreases as the pressure value P decreases. When the pressure value P is less than the second pressure threshold P L2 the control component controls the motor to operate at the second rotational speed. The second rotational speed is less than the first rotational speed, and the second rotational speed can be the minimum rotational speed of the motor. The second pressure threshold P L2 is less than the third pressure threshold P L3 . When the pressure value P continues to decrease to be less than the first pressure threshold P L1 it represents that all the hydraulic fluid has been discharged. The control component controls the motor to stop working, and the screw pump stops working. The first pressure threshold P L1 is less than the second pressure threshold P L2 .

[0063] In this way, the hydraulic fluid can be quickly discharged, and it can effectively prevent the problem that when the hydraulic fluid is too little, a large amount of air is inhaled and the screw pump is easily damaged under the condition of high-speed operation.

[0064] In some embodiments provided by the present utility model, the reduction device 9 is provided with an air inlet.

[0065] In this embodiment, during the process that the pumping device 101 sucks the lubricating oil from the reduction device 9, a negative pressure is generated inside the reduction device 9, and the external air can be supplemented into the reduction device 9 through the air inlet to ensure the pressure balance inside and outside the reduction device 9, so that the lubricating oil inside the reduction device 9 can be smoothly discharged.

[0066] In some embodiments provided by the present utility model, the oil drain system further includes a check valve 5. The check valve 5 is arranged at the air inlet, and the conducting direction of the check valve 5 is from the outside to the inside of the reduction device 9.

[0067] In this embodiment, during the process that the pumping device 101 sucks the lubricating oil from the reduction device 9, a negative pressure is generated inside the reduction device 9, and the external pressure of the reduction device 9 is greater than the internal pressure, so that the check valve 5 is opened. Thus, the external air of the reduction device 9 can be supplemented into the reduction device 9 through the check valve 5 to ensure the pressure balance inside and outside the reduction device 9, so that the lubricating oil inside the reduction device 9 can be smoothly discharged. After the pumping device 101 stops, the pressure inside and outside the reduction device 9 is basically the same, and the check valve 5 closes to prevent impurities from entering the reduction device 9.

[0068] Reference Figure 3As shown, in some embodiments provided by the present utility model, the one-way valve 5 includes a valve body 501, a sphere 502, and an elastic member 503.

[0069] Among them, along the direction from the outside to the inside of the reduction device 9, the valve body 501 has a first limiting plate 5011 and a second limiting plate 5012 arranged at intervals. The first limiting plate 5011 is provided with a first flow hole, and the second limiting plate 5012 is provided with a second flow hole.

[0070] The sphere 502 is arranged between the first limiting plate 5011 and the second limiting plate 5012 and is used for sealing cooperation with the first flow hole. The elastic member 503 connects the second limiting plate 5012 and the sphere 502 and is used for clamping the sphere 502 between the elastic member 503 and the first limiting plate 5011. For example, the elastic member is set as a spring.

[0071] In this embodiment, the valve body 501 is installed at the air inlet. During the process of the pumping device 101 sucking lubricating oil from the reduction device 9, negative pressure is generated inside the reduction device 9. The external pressure of the reduction device 9 is greater than the internal pressure. The external air flow pushes the sphere 502 to compress the elastic member 503, and a gap is generated between the sphere 502 and the first limiting plate 5011. The sphere 502 opens the first flow hole, so that the air outside the reduction device 9 can sequentially pass through the first flow hole and the second flow hole and supplement into the reduction device 9 to ensure the pressure balance inside and outside the reduction device 9, so that the lubricating oil inside the reduction device 9 can be smoothly discharged.

[0072] After the pumping device 101 stops, the internal and external pressures of the reduction device 9 are basically the same. The elastic member 503 drives the sphere 502 to abut against the first limiting plate 5011, and the sphere 502 closes the first flow hole to prevent impurities from entering the reduction device 9.

[0073] Reference Figure 3 As shown, optionally, at least one of the first limiting plate 5011 and the second limiting plate 5012 is detachably arranged to facilitate the installation of the elastic member 503 and the sphere 502 between the first limiting plate 5011 and the second limiting plate 5012. Further, at least one of the first limiting plate 5011 and the second limiting plate 5012 is threadedly connected to the valve body 501 to facilitate adjusting the compression degree of the elastic member 503 by screwing the first limiting plate 5011 or the second limiting plate 5012, thereby conveniently adjusting the opening force of the one-way valve 5.

[0074] In some embodiments provided by the present utility model, the oil drain system further includes a filter element 6, and the filter element 6 is arranged at the air inlet. For example, the filter element 6 can be arranged at the inlet end of the one-way valve 5. For example, the filter element 6 is arranged at the inlet end of the valve body 501 and is connected to the valve body 501. The filter element 6 can be a filter screen or a filter element.

[0075] In this embodiment, by providing a filter element 6 at the air inlet, impurities in the air can be prevented from entering the reduction gear 9, which may damage gears, bearings, etc.

[0076] An embodiment of the present utility model further provides a working machine.

[0077] Specifically, the working machine includes the oil draining system as described above.

[0078] Since the working machine includes the oil draining system, it also includes all the above advantages of the oil draining system, so it will not be elaborated here.

[0079] For example, the working machine includes, but is not limited to, an excavator, a rotary drilling rig, and a crane.

[0080] In some embodiments provided by the present utility model, at least two reduction gears 9 are provided. For example, the working machine has a slewing platform 10, and at least two rotation driving devices are provided on the slewing platform 10. Each rotation driving device is connected to a corresponding reduction gear 9 and is in transmission connection with the vehicle frame through the reduction gear 9. The rotation driving device is used to drive the slewing platform 10 to rotate relative to the vehicle frame through the reduction gear 9.

[0081] Optionally, each reduction gear 9 is provided with a corresponding oil draining branch 1. With this arrangement, each reduction gear 9 can be independently detected or drained of lubricating oil by the corresponding oil draining branch 1 without interference, and all the reduction gears 9 can simultaneously detect and drain the lubricating oil, with higher detection efficiency and drainage efficiency.

[0082] Of course, it is not limited to providing an oil draining branch 1 for each reduction device. For example, in other embodiments provided by the present utility model, the reduction gears 9 are all connected to the oil draining branch 1 through a second control valve, and the second control valve can control any one of the reduction gears 9 to be connected to the oil draining branch 1. With this arrangement, all the reduction gears 9 can share an oil draining branch 1, thereby reducing the cost of the working machine.

[0083] Optionally, a guard plate 7 is further provided on the slewing platform 10, and the oil draining branch 1 is arranged inside the guard plate 7. By arranging the oil draining branch 1 inside the guard plate 7, the components of the oil draining branch 1 can be protected by the guard plate 7, avoiding damage to the components of the oil draining branch 1 caused by flying sand and gravel during the operation of the working machine.

[0084] In some embodiments provided by the present utility model, the oil draining branch 1 further includes a transition block 105. The transition block 105 connects the first control valve 102 and the fuel tank 8. Among them, the first control valve 102 is connected to the transition block 105 through a pipeline, and the transition block 105 is installed on the slewing platform 10 through a fastener.

[0085] In this embodiment, when it is necessary to drain the lubricating oil, the transition block 105 can be connected to the fuel tank 8, and after the draining is completed, the transition block 105 can be disassembled from the fuel tank 8. By providing a tubing, it is convenient to connect and transition between the first control valve 102 and the fuel tank 8 through the tubing, and in addition, it is convenient to lead out the lubricating oil discharged from the first control valve 102 to the fuel tank 8. By providing the transition block 105, and the transition block 105 is connected to the slewing platform 10, the tubing between the transition block 105 and the first control valve 102 can be fixed through the transition block 105, preventing the tubing from moving freely and causing interference or entanglement problems.

[0086] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations fall within the scope defined by the appended claims.

Claims

1. An oil draining system, characterized in that, For draining oil from a speed reduction device (9), comprising: An oil draining branch (1), including a pumping device (101), a first control valve (102) and a cleanliness detection device (103). The liquid inlet of the pumping device (101) is used to communicate with the speed reduction device (9); the first control valve (102) is respectively connected to the liquid outlet of the pumping device (101), the speed reduction device (9) and the fuel tank (8), and can control either the speed reduction device (9) or the fuel tank (8) to communicate with the liquid outlet of the pumping device (101); the cleanliness detection device (103) is connected between the first control valve (102) and the speed reduction device (9), and is used to detect the cleanliness information of the oil. A control component (2), electrically connected to the cleanliness detection device (103), and the control component (2) is used to send an alarm message according to the cleanliness information.

2. The oil discharge system according to claim 1, characterized in that, The oil draining system further includes an alarm device, the alarm device is electrically connected to the control component (2), and the alarm device alarms in response to the cleanliness information. And / or, both the pumping device (101) and the first control valve (102) are electrically connected to the control component (2), the control component (2) is used to control the pumping device (101) to switch states, and the control component (2) is also used to control the first control valve (102) to switch states.

3. The oil draining system according to claim 2, wherein The oil draining branch (1) further includes an oil detection device (104), the oil detection device (104) is used to detect the oil quantity in the speed reduction device (9), and the oil detection device (104) is electrically connected to the control component (2).

4. The oil draining system according to claim 2, wherein, The oil draining system further includes an instruction input component (4), the instruction input component (4) is electrically connected to the control component (2), and is used to input a control instruction to the control component (2).

5. The oil draining system according to any one of claims 1-4, characterized in that, The speed reduction device (9) is provided with an air inlet.

6. The oil draining system according to claim 5, characterized in that The speed reduction device (9) further includes a one-way valve (5), the one-way valve (5) is arranged at the air inlet, and the conduction direction of the one-way valve (5) is from the outside to the inside of the speed reduction device (9).

7. The oil draining system according to claim 5, wherein, The speed reduction device (9) further includes a filter element (6), the filter element (6) is arranged at the air inlet.

8. The oil discharge system according to claim 6, wherein The one-way valve (5) includes a valve body (501), a sphere (502) and an elastic member (503); Wherein, along the direction from the outside to the inside of the speed reduction device (9), the valve body (501) has a first limiting plate (5011) and a second limiting plate (5012) arranged at intervals, the first limiting plate (5011) is provided with a first flow hole, and the second limiting plate (5012) is provided with a second flow hole. The sphere (502) is arranged between the first limiting plate (5011) and the second limiting plate (5012), and is used for sealing cooperation with the first flow hole. The elastic member (503) connects the second limiting plate (5012) and the sphere (502), and is used for clamping the sphere (502) between the elastic member (503) and the first limiting plate (5011).

9. An operating machine, characterized in that, It includes the oil draining system according to any one of claims 1-8.

10. The work machine according to claim 9, characterized in that, The working machine has at least two of the speed reduction devices (9); Wherein, each of the speed reduction devices (9) is provided with a corresponding oil draining branch (1), or the speed reduction devices (9) are all connected to the oil draining branch (1) through a second control valve, and the second control valve can control any one of the speed reduction devices (9) to be connected to the oil draining branch (1).

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