A self-lubricating cooling type motor for drones

Abstract

This invention relates to the field of unmanned aerial vehicle (UAV) technology, and more particularly to a self-lubricating and cooled UAV motor. The self-lubricating and cooled UAV motor includes a motor housing mounted on the UAV body. A first storage box and a second storage box are disposed on the outer side wall of the motor housing. A motor stator is disposed in the middle of the motor housing. A rotating shaft is rotatably disposed within the motor stator and connected to the UAV's propeller blades. A first temperature sensor is disposed on the rotating shaft. A second temperature sensor is disposed on the motor housing. An oil replenishment mechanism is disposed on the motor housing and communicates with the gap between the first storage box and the gap between the motor stator and the rotating shaft. The lubrication and maintenance provided by this invention does not require disassembly of the equipment or manual monitoring; it can be completed automatically, thus reducing maintenance difficulty and improving maintenance efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of unmanned aerial vehicles, and in particular to a self-lubricating cooling motor for unmanned aerial vehicles. Background Art

[0002] The propeller blades of the drone are connected to the drone body by a motor, so that the propeller blades are driven to rotate by the motor to realize the take-off and landing of the drone. The motor of the drone includes a rotating shaft and a stator, and the rotating shaft and stator of the drone motor do need to be lubricated. Lubrication is essential to keep the rotating shaft and stator in good operating condition. It helps to reduce wear, reduce noise, improve efficiency, and extend the service life of components. After working for a period of time, the lubricating oil between the motor stator and the rotating shaft will decrease. At this time, the staff is required to lubricate and maintain the connection position of the rotating shaft and the stator. The traditional lubrication and maintenance method is that the staff needs to disassemble the device and then add lubricating oil or grease, etc., but this method has the disadvantages of cumbersome operation and relatively long maintenance time. In order to solve the above problems, a self-lubricating cooling type drone motor is provided in the present invention. Summary of the invention

[0003] To achieve the above-mentioned objectives, the present invention provides a self-lubricating cooling type motor for an unmanned aerial vehicle, comprising a motor housing arranged on a main body of the unmanned aerial vehicle, a first storage box and a second storage box being arranged on the outer side wall of the motor housing, a motor stator being arranged in the middle portion of the motor housing, a rotating shaft being rotatably arranged in the motor stator, the rotating shaft being connected to the blades of the unmanned aerial vehicle, a first temperature sensor being arranged on the rotating shaft, a second temperature sensor being arranged on the motor housing, and an oil replenishing mechanism being arranged on the motor housing and used for connecting the first storage box with a gap between the motor stator and the rotating shaft. During operation, when the temperature on the rotating shaft collected by the first temperature sensor is inconsistent with the temperature on the motor housing collected by the second temperature sensor, the oil replenishing mechanism introduces the cooling oil in the first storage box into the gap to achieve lubrication between the rotating shaft and the motor stator.

[0004] Optionally, the oil replenishing mechanism includes an oil replenishing pipe arranged on the top plate of the motor housing, one end of the oil replenishing pipe is communicated with the inner cavity of the first storage box, the other end of the oil replenishing pipe is communicated with the inner cavity of the oil replenishing tank, the oil replenishing tank is fixedly arranged on the stator of the motor, and an oil outlet is arranged at one end of the oil replenishing tank away from the oil replenishing pipe, and the oil replenishing cavity of the oil replenishing pipe is communicated with the gap through the oil outlet.

[0005] Optionally, it also includes an oil replenishing sealing mechanism, which includes a through hole opened on the top plate of the oil replenishing tank, a sealing door movably inserted in the through hole, the sealing door divides the inner cavity of the oil replenishing tank into a first cavity and a second cavity isolated from each other, a first connecting rod is fixedly connected to the upper end surface of the sealing door, a second connecting rod is fixedly connected to the side wall of the first connecting rod, the free end of the second connecting rod is fixedly connected to the cylinder arm, the lower end of the cylinder arm is fixedly connected to the driving end of the driving cylinder, and the driving cylinder is fixedly set on the outer top wall of the oil replenishing tank.

[0006] Optionally, it also includes a limiting mechanism, which includes a first fixed block and a second fixed block fixedly connected to the inner wall of the oil replenishing tank, an oil passage exists between the first fixed block and the second fixed block, a fixed baffle is fixedly arranged in the oil passage, a movable baffle is movably arranged in the oil passage, the movable baffle is arranged in the second cavity, the movable baffle is movably sleeved outside the extension tube, the extension tube is fixedly plugged into the fixed baffle, and the extension tube is connected to the oil replenishing tube, a plug hole is opened on the extension tube, the blocking door is movably plugged into the extension tube, and the first electrode contact piece and the second electrode contact piece are respectively fixedly connected to the sides of the fixed baffle and the movable baffle that are close to each other.

[0007] Optionally, the limiting mechanism also includes a first guide assembly with one end fixedly connected to the side wall of the fixed baffle and the other end fixedly connected to the side wall of the movable baffle, the first guide assembly including a first guide rod, a first guide cylinder and a first guide spring, the first guide rod being movably inserted in the first guide cylinder, the first guide spring being wound outside the first guide rod, and the two ends of the first guide spring being respectively fixedly connected to the side wall of the first guide rod and the outer side wall of the first guide cylinder.

[0008] Optionally, it also includes a first conveying mechanism, which includes N first oil pipes and M second oil pipes arranged in the motor housing, the first oil pipe and the second oil pipe are respectively arranged on opposite sides of the first storage box and the second storage box, one end of the first oil pipe and the second oil pipe are interconnected with the first storage box, and the other end of the first oil pipe and the second oil pipe are interconnected with the second storage box, a plurality of first oil holes are arranged on the first oil pipe, and a plurality of second oil holes are arranged on the second oil pipe, wherein the N first oil pipes are arranged in the vertical direction, and the M second oil pipes are arranged in the vertical direction, and N and M are positive integers greater than or equal to 2.

[0009] Optionally, it also includes a second conveying mechanism, which includes an annular oil pipe arranged on the top plate of the motor housing, both ends of the annular oil pipe are connected with connecting pipes, the connecting pipes are connected with the first storage box, and a plurality of straight oil pipes are connected on the lower end surface of the annular oil pipe, and the plurality of straight oil pipes are divided into two groups, and the two groups of straight oil pipes are respectively fixedly plugged on N first oil pipes and M second oil pipes, and a plurality of oil outlet holes are opened on the straight oil pipes, and the oil outlet holes are used for the inner cavity of the straight oil pipe to be connected with the inner cavity of the motor housing, and for the inner cavity of the straight oil pipe to be connected with the inner cavity of the first oil pipe and the inner cavity of the second oil pipe.

[0010] Optionally, it also includes a conveying sealing mechanism, which includes a sealing box fixedly arranged on the inner top wall of the first storage box, the sealing box is provided with a second inlet which is interconnected with the inner cavity of the first storage box, the oil replenishing pipe is fixedly inserted in the sealing box, and the oil replenishing pipe is connected to the connecting pipe, a first fixed plate and a second fixed plate are fixedly arranged on the inner side wall of the sealing box, a first inlet for connecting the second inlet with the oil replenishing pipe exists between the first fixed plate and the second fixed plate, a rotating rod is rotatably arranged in the middle of the first inlet, and rotating plates are fixedly arranged on two opposite surfaces of the rotating rod, the free ends of the two rotating plates are slidably connected to the inner side wall of the sealing box, and the two rotating plates are respectively in conflict with the first fixed plate and the second fixed plate to achieve blocking of the first inlet.

[0011] Optionally, it also includes a connecting mechanism, which includes a first mounting seat fixedly connected to the rotating plate, a connecting soft rod hinged on the first mounting seat, the connecting soft rod movably inserted in the oil supply pipe, and the free end of the connecting soft rod is hinged to a third mounting seat, and the third mounting seat is fixedly arranged on the side wall of the blocking door.

[0012] Optionally, the connecting mechanism also includes two second mounting seats respectively fixedly connected to the rotating plate and the inner wall of the sealing box, the two second mounting seats are respectively hinged to the two ends of the second guide assembly, the second guide assembly includes a second guide rod, a second guide cylinder and a second guide spring, the second guide rod is movably inserted in the second guide cylinder, the second guide spring is wound outside the second guide rod, and the two ends of the second guide spring are respectively fixedly connected to the side wall of the second guide rod and the outer wall of the second guide cylinder.

[0013] The beneficial effects of the present invention are as follows:

[0014] The present invention arranges a combined structure of a first temperature sensor, a second temperature sensor and an oil replenishing mechanism on an existing motor for an unmanned aerial vehicle, wherein the first temperature sensor and the second temperature sensor are respectively used to collect the temperature on the rotating shaft and the temperature on the motor housing. When the collected temperature on the rotating shaft and the temperature on the motor housing are inconsistent, the oil replenishing mechanism will transport the cooling oil in the first storage box to the gap between the motor stator and the rotating shaft, thereby realizing lubrication maintenance of the connection position between the motor stator and the rotating shaft. The lubrication maintenance does not require disassembly of the equipment and does not require manual monitoring and operation, and can be completed automatically, which can reduce the difficulty of maintenance and improve the efficiency of maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of an oil replenishing mechanism provided on the motor housing of the self-lubricating cooling type UAV motor of the present invention;

[0016] Figure 2 The motor for the self-lubricating cooling type drone of the present invention Figure 1 Structural diagram of the oil replenishment mechanism;

[0017] Figure 3 It is a schematic diagram of the outer surface structure of the self-lubricating cooling type UAV motor of the present invention, in which an oil filling sealing mechanism is arranged on the oil filling tank;

[0018] Figure 4 The motor for the self-lubricating cooling type drone of the present invention Figure 3 Schematic diagram of the internal structure;

[0019] Figure 5 The motor for the self-lubricating cooling type drone of the present invention Figure 4 A schematic diagram of the enlarged structure in the middle;

[0020] Figure 6 It is a structural schematic diagram of a first cooling oil delivery mechanism provided in a motor housing of a self-lubricating cooling type UAV motor of the present invention;

[0021] Figure 7 The motor for the self-lubricating cooling type drone of the present invention Figure 6 A magnified schematic diagram of the structure B in the middle;

[0022] Figure 8 It is a structural schematic diagram of a second cooling oil delivery mechanism provided on the motor housing of the self-lubricating cooling type UAV motor of the present invention;

[0023] Fig. 9 The motor for the self-lubricating cooling type drone of the present invention Figure 8 A schematic structural diagram of the second conveying mechanism;

[0024] Fig.10It is a structural schematic diagram of a cooling oil delivery sealing mechanism provided in a first storage box in a self-lubricating cooling type UAV motor of the present invention;

[0025] Fig.11 The present invention is a schematic diagram of the structure in which a soft rod and a blocking door are connected to each other in a self-lubricating cooling type UAV motor.

[0026] Description of Reference Numerals

[0027] Motor housing 1, motor stator 2, rotating shaft 3, first storage box 4, second storage box 5, first temperature sensor 6, second temperature sensor 7,

[0028] Oil replenishment mechanism 8, oil replenishment pipe 81, oil replenishment tank 82, oil replenishment chamber 83,

[0029] Oil replenishment blocking mechanism 9, through hole 91, blocking door 92, first connecting rod 93, second connecting rod 94, cylinder arm 95, driving cylinder 96,

[0030] Limiting mechanism 10, first fixed block 101, second fixed block 102, oil passage 103, fixed baffle 104, movable baffle 105, extension tube 106, first guide assembly 107, first guide rod 1071, first guide cylinder 1072, first guide spring 1073, first electrode contact sheet 108, second electrode contact sheet 109,

[0031] The second delivery mechanism 11, the annular oil delivery pipe 111, the connecting pipe 112, the oil delivery straight pipe 113, the oil outlet hole 114,

[0032] The first delivery mechanism 12, the first oil delivery pipe 121, the second oil delivery pipe 122, the first oil delivery hole 123, the second oil delivery hole 124,

[0033] Conveying sealing mechanism 13, sealing box 131, first fixing plate 132, second fixing plate 133, first inlet 134, rotating rod 135, rotating plate 136, second inlet 137,

[0034] The connecting mechanism 14 , the first mounting seat 141 , the connecting soft rod 142 , the second mounting seat 143 , the second guide assembly 144 , the second guide rod 1441 , the second guide cylinder 1442 , the second guide spring 1443 , and the third mounting seat 145 . DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Unless otherwise defined, the technical terms or scientific terms used herein should be understood by people with general skills in the field to which the present invention belongs. "Including" and similar words used in this article mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0036] In the prior art, after the motor has been working for a period of time, the lubricating oil between the motor stator 2 and the rotating shaft 3 will decrease. The reasons for the reduction of lubricating oil include the following aspects: (1) the lubricating oil will evaporate and lose when the equipment is working, causing the amount of lubricating oil to gradually decrease; (2) when the rotating shaft 3 rotates, mechanical wear and material reduction will occur due to the contact movement between various components, and the surface of the processing surface, boss, etc. will be continuously ground. The lubricating oil will be consumed during the cutting and friction processes.

[0037] When the lubricating oil between the motor stator 2 and the shaft 3 is reduced, the temperature of the shaft 3 will rise faster than other parts of the motor. The specific reasons are as follows: (1) One of the main functions of lubricating oil is to reduce friction and wear inside the bearing. Lack of lubricating oil will cause direct contact between the metals inside the bearing, increase the friction coefficient, and thus generate more heat, causing the temperature to rise; (2) Lubricating oil also has the function of removing the heat generated by friction from the inside of the bearing. Lack of lubricating oil will weaken this heat dissipation function, causing heat to accumulate inside the bearing, causing the temperature to rise. Therefore, whether there is a lack of lubricating oil between the motor stator 2 and the shaft 3 can be judged by whether the temperature of the motor housing 1 and the shaft 3 is consistent during operation.

[0038] In view of the problems existing in the prior art, an embodiment of the present invention provides a self-lubricating cooling type motor for a drone, such as Figure 1 As shown, the self-lubricating cooling type UAV motor includes a motor housing 1 provided on the UAV body, and a first storage box 4 and a second storage box 5 are provided on the outer wall of the motor housing 1. The first storage box 4 is used to store the cooling oil that has not been processed for the motor, and the second storage box 5 is used to store the cooling oil that has been processed for the motor. The first storage box 4 is connected to a cooling oil inlet pipe (not numbered) connected to a cooling oil source (not shown), and the second storage box 5 is connected to a cooling oil outlet pipe (not numbered) connected to a collection tank (not shown). It is worth noting that the cooling oil can be used to cool the equipment and at the same time, it can also play a role in lubrication.

[0039] In one example, Figure 1 As shown, a motor stator 2 is provided in the middle of the motor housing 1, a rotating shaft 3 is rotatably provided inside the motor stator 2, the rotating shaft 3 is connected to the blades of the drone, a first temperature sensor 6 is detachably provided on the rotating shaft 3, and the first temperature sensor 6 is used to collect the temperature on the rotating shaft 3; a second temperature sensor 7 is detachably provided on the motor housing 1, and the second temperature sensor 7 is used to collect the temperature on the motor housing 1; and an oil replenishing mechanism 8 is provided on the motor housing 1 and used to connect the first storage box 4 with the gap between the motor stator 2 and the rotating shaft 3. During operation, when the temperature on the rotating shaft 3 collected by the first temperature sensor 6 is inconsistent with the temperature on the motor housing 1 collected by the second temperature sensor 7, the oil replenishing mechanism 8 introduces the cooling oil in the first storage box 4 into the gap to achieve lubrication between the rotating shaft 3 and the motor stator 2.

[0040] It should be noted that the cooling oil introduced into the gap between the rotating shaft 3 and the motor stator 2 can not only lubricate the rotating shaft 3 and the motor stator 2, but also cool the rotating shaft 3 and the motor stator 2; of course, when the temperature of the rotating shaft 3 collected by the first temperature sensor 6 is consistent with the temperature of the motor housing 1 collected by the second temperature sensor 7, the amount of lubricating oil between the rotating shaft 3 and the motor stator 2 can play an effective role in cooling and lubricating.

[0041] In one embodiment, Figure 1 and Figure 2 As shown, the oil replenishing mechanism 8 includes an oil replenishing pipe 81 arranged on the top plate of the motor housing 1. In one example, the oil replenishing pipe 81 is embedded in the top plate of the motor housing 1; one end of the oil replenishing pipe 81 (which can be understood as the right end) is interconnected with the inner cavity of the first storage box 4, and the other end of the oil replenishing pipe 81 (which can be understood as the left end) is connected with the inner cavity of the oil replenishing tank 82. The oil replenishing tank 82 is fixedly arranged on the motor stator 2, and the end of the oil replenishing tank 82 away from the oil replenishing pipe 81 (which can be understood as the left end) is provided with an oil outlet, and the oil replenishing cavity 83 of the oil replenishing pipe 81 is connected with the gap through the oil outlet. It is worth noting that in one example, the left end of the oil replenishing tank 82 is arranged as an arc structure, and the curvature is consistent with the curvature of the rotating shaft 3.

[0042] In the above embodiment, the combination of the oil replenishing pipe 81 and the oil replenishing tank 82 can directly introduce the cooling oil in the first storage tank 4 into the gap between the motor stator 2 and the rotating shaft 3. This leads to a problem that as long as there is cooling oil in the first storage tank 4, it will be transported to the gap between the motor stator 2 and the rotating shaft 3. Even if there is no lack of lubricating oil between the motor stator 2 and the rotating shaft 3, this will lead to a waste of cooling oil. In order to solve the above problem, in one embodiment, as Figure 3 As shown, the self-lubricating cooling type UAV motor also includes an oil filling plugging mechanism 9, and the oil filling plugging mechanism 9 includes a through hole 91 opened on the top plate of the oil filling tank 82, and a plugging door 92 is movably inserted in the through hole 91. It should be noted that the plugging door 92 can intermittently plug the oil filling tank 82. Specifically, when there is a lack of lubricating oil between the motor stator 2 and the rotating shaft 3, the plugging door 92 opens, and the cooling oil enters the gap between the motor stator 2 and the rotating shaft 3. When there is no lack of lubricating oil between the motor stator 2 and the rotating shaft 3, the plugging door 92 plugs the oil filling tank 82 to prevent the cooling oil from entering between the motor stator 2 and the rotating shaft 3, thereby avoiding the waste of cooling oil. It should be noted that in this embodiment, the plugging door 92 is an arc-shaped structure, and its size is consistent with the size of the contacting oil filling cavity 83.

[0043] In one example, the blocking door 92 divides the inner cavity of the oil replenishing tank 82 into a first cavity and a second cavity that are isolated from each other (it can be understood that the first cavity is a cavity arranged on the left side of the blocking door 92, and the second cavity is a cavity arranged on the right side of the blocking door 92), and a first connecting rod 93 is fixedly connected to the upper end surface of the blocking door 92, and a second connecting rod 94 is fixedly connected to the side wall of the first connecting rod 93, and the free end of the second connecting rod 94 is fixedly connected to a cylinder arm 95, and the lower end of the cylinder arm 95 is fixedly connected to the driving end of a driving cylinder 96, and the driving cylinder 96 is fixedly arranged on the outer top wall of the oil replenishing tank 82. The implemented setting can enable the oil replenishing sealing mechanism 9 to achieve the effect of intelligent control.

[0044] During operation, when the temperatures collected by the first temperature sensor 6 and the second temperature sensor 7 are inconsistent, the driving cylinder 96 is controlled to start. The driving cylinder 96 moves the blocking door 92 upward through the combined structure of the cylinder arm 95, the second connecting rod 94 and the first connecting rod 93, so that the first cavity and the second cavity are connected, so that the cooling oil in the second cavity enters the gap between the motor stator 2 and the rotating shaft 3 through the first cavity, thereby increasing the amount of lubricating oil in the gap. As the lubricating oil in the gap between the motor stator 2 and the rotating shaft 3 increases, the amount of lubricating oil in the gap increases. The increase in the amount can, on the one hand, lubricate the motor stator 2 and the rotating shaft 3, and on the other hand, cool the motor stator 2 and the rotating shaft 3. The first temperature sensor 6 and the second temperature sensor 7 collect the temperatures of the motor stator 2 and the rotating shaft 3 in real time. When the temperatures of the motor stator 2 and the rotating shaft 3 are consistent, the driving cylinder 96 is controlled to move in the reverse direction, so that the blocking door 92 moves downward to reset, and the first cavity and the second cavity are blocked again, so as to prevent the cooling oil from continuing to be transported into the gap between the motor stator 2 and the rotating shaft 3.

[0045] Since it takes a certain amount of time for the motor stator 2 and the shaft 3 to cool down to the same temperature, in one example, after the gap between the motor stator 2 and the shaft 3 is filled with a sufficient amount of cooling oil, the temperatures on the motor stator 2 and the shaft 3 are still not consistent. At this time, the blocking door 92 is still not reset downward to close the oil filling tank 82, so that the cooling oil continues to be input into the gap. In order to prevent this from happening, in one embodiment, Figure 4 As shown, the self-lubricating cooling type UAV motor also includes a limiting mechanism 10. The limiting mechanism 10 is provided to fill the position of the equipment. Specifically, when a sufficient amount of cooling oil is filled in the gap and the temperatures of the motor stator 2 and the rotating shaft 3 are not adjusted to be consistent, the driving cylinder 96 is controlled to provide directional force to drive the blocking door 92 downward to block the oil filling tank 82.

[0046] In one example, Figure 4As shown, the limiting mechanism 10 includes a first fixed block 101 and a second fixed block 102 fixedly connected to the inner wall of the oil replenishing tank 82, and the first fixed block 101 and the second fixed block 102 are arranged near the inner wall of the front and rear ends of the oil replenishing tank 82, so that the cooling oil can be prevented from passing through the first fixed block 101 and the oil replenishing tank 82, and between the oil replenishing tank 82 and the second fixed block 102; there is an oil passage 103 between the first fixed block 101 and the second fixed block 102, and a fixed baffle 104 is fixedly arranged in the oil passage 103, and the fixed baffle 104 is arranged at the left end of the oil passage 103; a movable baffle 105 is movably arranged in the oil passage 103, and the movable baffle 105 is arranged near the right end of the oil passage 103; the The movable baffle 105 is arranged in the second cavity, and the movable baffle 105 is movably sleeved outside the extension tube 106. The extension tube 106 is fixedly plugged on the fixed baffle 104, and the extension tube 106 is connected with the oil replenishing tube 81. The extension tube 106 is provided with a plug hole (unnumbered), and the plug hole is connected with the inner cavity of the extension tube 106; the blocking door 92 is movably plugged in the extension tube 106, and the movable baffle 105 can slide left and right on the extension tube 106, and the extension tube 106 can play a guiding role, so that the movable baffle 105 can only move in the horizontal direction; the first electrode contact piece 108 and the second electrode contact piece 109 are fixedly connected to the side where the fixed baffle 104 and the movable baffle 105 are close to each other. It should be noted that, in this example, the blocking door 92 is an arc-shaped integral structure, the size of which is consistent with the size of the hole of the plug-in hole, or a trident structure, the overall size of the trident structure is consistent with the size of the contacting oil replenishing chamber 83, and the size of the middle fork is consistent with the size of the hole of the plug-in hole.

[0047] During operation, cooling oil enters the extension tube 106 from the oil replenishing pipe 81 and is input into the gap through the extension tube 106. As the amount of cooling oil in the gap increases, it enters the oil passage 103 and pushes the movable baffle 105 to move to the left. The leftward movement of the movable baffle 105 will move the second electrode contact 109 to the left. When the second electrode contact 109 contacts the first electrode contact 108, the series circuit is contacted. At this time, the control drive cylinder 96 provides a driving force in the reverse direction, so that the blocking door 92 enters the plug hole, thereby blocking the extension tube 106 and stopping the cooling oil from being transported to the gap.

[0048] In one embodiment, Figure 5As shown, the limiting mechanism 10 also includes a first guide assembly 107, one end of which is fixedly connected to the side wall of the fixed baffle 104 and the other end of which is fixedly connected to the side wall of the movable baffle 105. The first guide assembly 107 includes a first guide rod 1071, a first guide cylinder 1072 and a first guide spring 1073. The first guide rod 1071 is movably inserted in the first guide cylinder 1072, the first guide spring 1073 is wound around the outside of the first guide rod 1071, and the two ends of the first guide spring 1073 are respectively fixedly connected to the side wall of the first guide rod 1071 and the outer side wall of the first guide cylinder 1072.

[0049] In this embodiment, the setting of the first guide component 107 can not only play the role of guiding and supporting the movement of the movable baffle 105, so that the movable baffle 105 can only move in the horizontal direction, but also provide a reset force for the reset process of the movable baffle 105. The setting of the first guide component 107 can make the movable baffle 105 move to the initial position.

[0050] The conventional cooling method of the UAV motor is to input cooling oil from the first storage box 4 into the motor housing 1, and then the cooling oil continues to move to the left to take away the heat of the motor during operation, thereby achieving a cooling effect. However, since the cooling oil has absorbed some heat during the movement to the left, the temperature of the cooling oil on the right side is actually very high, which will weaken the cooling effect. In order to solve the above problem, in one embodiment, as Figure 6 and Figure 7 As shown, the self-lubricating cooling type UAV motor also includes a first conveying mechanism 12; the first conveying mechanism 12 includes N first oil pipelines 121 and M second oil pipelines 122 arranged in the motor housing 1, and the first oil pipeline 121 and the second oil pipeline 122 are respectively arranged on the opposite sides of the first storage box 4 and the second storage box 5. It can be understood that the first oil pipeline 121 is arranged on the rear side and the second oil pipeline 122 is arranged on the front side; one end of the first oil pipeline 121 and the second oil pipeline 122 (which can be understood as the right end) are both connected to the first storage box 4, and the first oil pipeline 121 and the second oil pipeline 122 are connected to the first storage box 4. The other end of the second oil pipeline 122 (which can be understood as the left end) is interconnected with the second storage box 5, and the first oil pipeline 121 is provided with a plurality of first oil holes 123, and the first oil holes 123 are used to connect the inner cavity of the first oil pipeline 121 with the inner cavity of the motor housing 1; the second oil pipeline 122 is provided with a plurality of second oil holes 124, and the second oil holes 124 are used to connect the inner cavity of the second oil pipeline 122 with the inner cavity of the motor housing 1; wherein, N of the first oil pipelines 121 are arranged in the vertical direction, and M of the second oil pipelines 122 are arranged in the vertical direction, and N and M are both positive integers greater than or equal to 2.

[0051] In this embodiment, the number of the first oil pipeline 121 and the second oil pipeline 122 can be 2, 3 or more. When setting, the number of the first oil pipeline 121 and the second oil pipeline 122 can be the same or different. Figure 6 In the example, the number of the first oil delivery pipe 121 and the second oil delivery pipe 122 is set to be consistent, and both are 3, so that a better cooling effect can be achieved by increasing the number. The first oil delivery pipe 121 and the second oil delivery pipe 122 in the embodiment are set to be used for the delivery of cooling oil, ensuring that the temperature difference of the cooling oil near the first storage box 4 and the second storage box 5 is negligible, so that the delivery through the first oil delivery hole 123 and the second oil delivery hole 124 can ensure that the temperature difference of the cooling oil entering the motor housing 1 at the first storage box 4 and the second storage box 5 is negligible, so that the cooling effect of the cooling oil near the first storage box 4 and the second storage box 5 is consistent, thereby improving the overall cooling efficiency of the motor.

[0052] In the absence of lubricating oil in the gap, the temperature on the shaft 3 will rise rapidly. In order to achieve rapid cooling of the shaft 3, in one embodiment, as Figure 8 and Fig. 9 As shown, the self-lubricating cooling type UAV motor also includes a second conveying mechanism 11. The second conveying mechanism 11 is provided to assist the first conveying mechanism 12 in transmitting coolant, so that the coolant output from the first oil delivery hole 123 and the second oil delivery hole 124 to the motor housing 1 is closer to the source temperature of the cooling oil. It should be understood that in the above embodiment, the first oil delivery pipe 121 and the second oil delivery pipe 122 are both arranged in the motor housing 1, and are affected by the temperature generated when the motor is working. Although the cooling oil temperatures in the first oil delivery pipe 121 and the second oil delivery pipe 122 can be ensured to be consistent, they will still be slightly higher than the source temperature of the cooling oil.

[0053] In order to solve the above problem, in one example, Fig. 9As shown, the second delivery mechanism 11 includes an annular oil delivery pipe 111 arranged on the top plate of the motor housing 1. The annular oil delivery pipe 111 is embedded in the outer surface of the motor housing 1 and is not laid out from the motor housing 1. In this way, when the cooling oil is transported in the annular oil delivery pipe 111, it will not be affected by the temperature in the motor housing 1, so that the cooling oil in the annular oil delivery pipe 111 is kept consistent with the cooling oil temperature at the source; both ends of the annular oil delivery pipe 111 are connected with connecting pipes 112, so that the two ends can transport cooling oil at the same time; the connecting pipe 112 is connected to the first storage box 4 The lower end surface of the annular oil delivery pipe 111 is connected with a plurality of straight oil delivery pipes 113, and the plurality of straight oil delivery pipes 113 are divided into two groups. The two groups of straight oil delivery pipes 113 are respectively fixedly plugged into the N first oil delivery pipes 121 and the M second oil delivery pipes 122. The straight oil delivery pipes 113 are provided with a plurality of oil outlet holes 114, and the oil outlet holes 114 are used for the inner cavity of the straight oil delivery pipe 113 to communicate with the inner cavity of the motor housing 1, and for the inner cavity of the straight oil delivery pipe 113 to communicate with the inner cavity of the first oil delivery pipe 121 and the inner cavity of the second oil delivery pipe 122. The arrangement of this embodiment can keep the temperature of the cooling oil delivered to the motor housing 1 by the second delivery mechanism 11 consistent with the temperature of the cooling oil at the source, so that the cooling oil can achieve the maximum cooling efficiency.

[0054] In order to improve the high efficiency performance of the equipment, the oil delivery process of the oil replenishment mechanism 8 and the second delivery mechanism 11 are kept consistent. In one embodiment, Fig.10As shown, the self-lubricating cooling type UAV motor also includes a conveying sealing mechanism 13, and the conveying sealing mechanism 13 includes a sealing box 131 fixedly arranged on the inner top wall of the first storage box 4, and a second inlet 137 is opened on the sealing box 131, which is interconnected with the inner cavity of the first storage box 4, and part of the coolant in the first storage box 4 will enter the sealing box 131 through the second inlet 137; the oil replenishing pipe 81 is fixedly plugged on the sealing box 131, and the oil replenishing pipe 81 is connected to the connecting pipe 112. This arrangement can ensure that the cooling oil enters the oil replenishing pipe 81 and the connecting pipe 112 at the same time, so that while increasing the cooling oil in the gap, it will also pass through the connecting pipe 112. The cooling oil quickly cools down the rotating shaft 3; a first fixed plate 132 and a second fixed plate 133 are fixedly arranged on the inner side wall of the sealing box 131, and a first inlet 134 for connecting the second inlet 137 and the oil replenishing pipe 81 exists between the first fixed plate 132 and the second fixed plate 133, a rotating rod 135 is rotatably arranged in the middle of the first inlet 134, and rotating plates 136 are fixedly arranged on two opposite surfaces of the rotating rod 135, and the free ends of the two rotating plates 136 are slidably connected to the inner side wall of the sealing box 131, and the two rotating plates 136 are respectively in conflict with the first fixed plate 132 and the second fixed plate 133 to achieve the blocking of the first inlet 134.

[0055] The setting of the conveying sealing mechanism 13 in this embodiment can control the timing of the cooling oil entering the oil replenishing pipe 81 and the connecting pipe 112. In order to ensure the high-efficiency performance of the equipment, through the setting of this embodiment, the input and closing of the cooling oil in the oil replenishing pipe 81 and the connecting pipe 112 can achieve the effect of synchronous control. Specifically, when the rotating rod 135 rotates counterclockwise with the rotating plate 136, the two rotating plates 136 are separated from the first fixed plate 132 and the second fixed plate 133, so that the first inlet 134 is opened, and the cooling oil enters the oil replenishing pipe 81 and the connecting pipe 112. As the rotating rod 135 rotates clockwise with the rotating plate 136, the rotating plate 136 is reset and re-contacts the first fixed plate 132 and the second fixed plate 133 to achieve the blocking of the first inlet 134.

[0056] In order to ensure that the movement of the blocking door 92 is consistent with the oil inlet of the connecting pipe 112 and the oil replenishing pipe 81, in one embodiment, as Fig.10As shown, the self-lubricating cooling type UAV motor also includes a connecting mechanism 14, which includes a first mounting seat 141 fixedly connected to the rotating plate 136, and a connecting soft rod 142 is hinged on the first mounting seat 141. The connecting soft rod 142 is movably inserted in the oil replenishing pipe 81, and the free end of the connecting soft rod 142 is hinged to the third mounting seat 145, and the third mounting seat 145 is fixedly arranged on the side wall of the blocking door 92.

[0057] During operation, as the blocking door 92 moves upward, the connecting soft rod 142 will pull the upper rotating plate 136 to rotate the rotating rod 135 and the lower rotating plate 136 counterclockwise, opening the first inlet 134, allowing the cooling oil to enter the connecting pipe 112, and enter the gap through the oil replenishing pipe 81 and the oil replenishing tank 82; as the blocking door 92 moves downward, the connecting soft rod 142 pushes the upper rotating plate 136 to rotate the rotating rod 135 and the lower rotating plate 136 clockwise, thereby blocking the first inlet 134 and stopping the cooling oil from being transported to the oil replenishing pipe 81 and the connecting pipe 112.

[0058] In one embodiment, Fig.11 As shown, the connection mechanism 14 also includes two second mounting seats 143 respectively fixedly connected to the rotating plate 136 and the inner side wall of the sealing box 131, and the two second mounting seats 143 are respectively hinged to the two ends of the second guide assembly 144, and the second guide assembly 144 includes a second guide rod 1441, a second guide cylinder 1442, and a second guide spring 1443, the second guide rod 1441 is movably inserted in the second guide cylinder 1442, the second guide spring 1443 is wound and arranged outside the second guide rod 1441, and the two ends of the second guide spring 1443 are respectively fixedly connected to the side wall of the second guide rod 1441 and the outer side wall of the second guide cylinder 1442. In this embodiment, the setting of the second guide assembly 144 can not only play a supporting role for the rotation of the rotating plate 136, but also provide a reset force for the reset process of the rotating plate 136 when the rotating plate 136 loses the pulling force of the connecting soft rod 142.

[0059] Although the embodiments of the present invention are described in detail above, it is obvious to those skilled in the art that various modifications and variations can be made to these embodiments. However, it should be understood that such modifications and variations are within the scope and spirit of the present invention as described in the claims. Moreover, the present invention described herein may have other embodiments and may be implemented or realized in a variety of ways.

Claims

1. A self-lubricating cooling type motor for drone, characterized in that: It includes a motor housing disposed on a drone body, a first storage box and a second storage box disposed on an outer side wall of the motor housing, a motor stator disposed in the middle of the motor housing, a rotating shaft rotatably disposed in the motor stator, the rotating shaft being connected to a blade of the drone, a first temperature sensor disposed on the rotating shaft, a second temperature sensor disposed on the motor housing, and an oil replenishing mechanism disposed on the motor housing and used for communicating with a gap between the motor stator and the rotating shaft. When working, when the temperature on the rotating shaft collected by the first temperature sensor is inconsistent with the temperature on the motor housing collected by the second temperature sensor, the oil replenishing mechanism guides cooling oil in the first storage box into the gap to achieve lubrication between the rotating shaft and the motor stator; The oil replenishing mechanism comprises an oil replenishing pipe arranged on the top plate of the motor housing, one end of the oil replenishing pipe is communicated with the inner cavity of the first storage box, and the other end of the oil replenishing pipe is communicated with the inner cavity of the oil replenishing tank; The oil replenishment blocking mechanism comprises a through hole formed on the top plate of the oil replenishment tank, a blocking door being movably inserted in the through hole, and the blocking door dividing the inner cavity of the oil replenishment tank into a first cavity and a second cavity which are isolated from each other; The limiting mechanism includes a first fixed block and a second fixed block fixedly connected to the inner wall of the oil replenishing tank, an oil passage exists between the first fixed block and the second fixed block, a fixed baffle is fixedly arranged in the oil passage, a movable baffle is movably arranged in the oil passage, the movable baffle is arranged in the second cavity, the movable baffle is movably sleeved outside the extension tube, the extension tube is fixedly plugged on the fixed baffle, and the extension tube is connected to the oil replenishing tube, a plug hole is opened on the extension tube, the blocking door is movably plugged in the extension tube, and the first electrode contact piece and the second electrode contact piece are fixedly connected to the sides of the fixed baffle and the movable baffle that are close to each other, respectively.

2. The self-lubricating cooling type motor for drone according to claim 1, characterized in that: The oil replenishing tank is fixedly arranged on the motor stator, and an oil outlet is arranged at one end of the oil replenishing tank away from the oil replenishing pipe, and the oil replenishing cavity of the oil replenishing pipe is connected with the gap through the oil outlet.

3. The self-lubricating cooling type motor for drone according to claim 2, characterized in that: A first connecting rod is fixedly connected to the upper end surface of the blocking door, a second connecting rod is fixedly connected to the side wall of the first connecting rod, the free end of the second connecting rod is fixedly connected to the cylinder arm, the lower end of the cylinder arm is fixedly connected to the driving end of the driving cylinder, and the driving cylinder is fixedly arranged on the outer top wall of the oil replenishing tank.

4. The self-lubricating cooling type motor for drone according to claim 1, characterized in that: The limiting mechanism also includes a first guide assembly with one end fixedly connected to the side wall of the fixed baffle and the other end fixedly connected to the side wall of the movable baffle. The first guide assembly includes a first guide rod, a first guide cylinder and a first guide spring. The first guide rod is movably inserted in the first guide cylinder, the first guide spring is wound outside the first guide rod, and the two ends of the first guide spring are respectively fixedly connected to the side wall of the first guide rod and the outer side wall of the first guide cylinder.

5. The self-lubricating cooling type motor for drone according to claim 1, characterized in that: It also includes a first conveying mechanism, which includes N first oil pipes and M second oil pipes arranged in the motor housing, the first oil pipe and the second oil pipe are respectively arranged on opposite sides of the first storage box and the second storage box, one end of the first oil pipe and the second oil pipe are interconnected with the first storage box, and the other end of the first oil pipe and the second oil pipe are interconnected with the second storage box, a plurality of first oil holes are arranged on the first oil pipe, and a plurality of second oil holes are arranged on the second oil pipe, wherein the N first oil pipes are arranged in the vertical direction, and the M second oil pipes are arranged in the vertical direction, and N and M are both positive integers greater than or equal to 2.

6. The self-lubricating cooling type motor for drone according to claim 5, characterized in that: It also includes a second conveying mechanism, which includes an annular oil delivery pipe arranged on the top plate of the motor housing, both ends of the annular oil delivery pipe are connected with connecting pipes, the connecting pipes are connected with the first storage box, and a plurality of straight oil delivery pipes are connected on the lower end surface of the annular oil delivery pipe. The plurality of straight oil delivery pipes are divided into two groups, and the two groups of straight oil delivery pipes are respectively fixedly plugged on the N first oil delivery pipes and the M second oil delivery pipes. The straight oil delivery pipes are provided with a plurality of oil outlet holes, and the oil outlet holes are used for the inner cavity of the straight oil delivery pipe to be connected with the inner cavity of the motor housing, and for the inner cavity of the straight oil delivery pipe to be connected with the inner cavity of the first oil delivery pipe and the inner cavity of the second oil delivery pipe.

7. The self-lubricating cooling type motor for drone according to claim 6, characterized in that: It also includes a conveying sealing mechanism, which includes a sealing box fixedly arranged on the inner top wall of the first storage box, a second inlet communicated with the inner cavity of the first storage box is opened on the sealing box, an oil replenishing pipe is fixedly inserted on the sealing box, and the oil replenishing pipe is communicated with the connecting pipe, a first fixed plate and a second fixed plate are fixedly arranged on the inner side wall of the sealing box, a first inlet for communicating with the second inlet and the oil replenishing pipe is provided between the first fixed plate and the second fixed plate, a rotating rod is rotatably arranged in the middle of the first inlet, rotating plates are fixedly arranged on two opposite surfaces of the rotating rod, free ends of the two rotating plates are slidably connected to the inner side wall of the sealing box, and the two rotating plates respectively conflict with the first fixed plate and the second fixed plate to achieve blocking of the first inlet.

8. The self-lubricating cooling type motor for drone according to claim 7, characterized in that: It also includes a connecting mechanism, which includes a first mounting seat fixedly connected to the rotating plate, a connecting soft rod hinged on the first mounting seat, the connecting soft rod is movably inserted in the oil replenishing pipe, and the free end of the connecting soft rod is hinged to the third mounting seat, and the third mounting seat is fixedly set on the side wall of the blocking door.

9. The self-lubricating cooling type motor for drone according to claim 8, characterized in that: The connecting mechanism also includes two second mounting seats respectively fixedly connected to the rotating plate and the inner wall of the sealing box, the two second mounting seats are respectively hinged to the two ends of the second guide assembly, the second guide assembly includes a second guide rod, a second guide cylinder and a second guide spring, the second guide rod is movably inserted in the second guide cylinder, the second guide spring is wound outside the second guide rod, and the two ends of the second guide spring are respectively fixedly connected to the side wall of the second guide rod and the outer wall of the second guide cylinder.

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