Planetary gear

Abstract

The planetary gear comprises a gear body, a circulation cavity and an oil storage cavity are formed in the gear body, a drainage pipe is arranged on the gear body, the circulation cavity communicates with the drainage pipe, the drainage pipe is used for conveying lubricating oil, the circulation cavity communicates with the oil storage cavity, and a plurality of first oil outlets are formed in the gear body; a plurality of first oil outlets are formed around the periphery of the gear body and communicate with the oil storage cavity, a plug is connected to the gear body in a sliding mode, the plug corresponds to the first oil outlets, the plug corresponds to the first oil outlets, and the plug protrudes out of the first oil outlets. And by arranging the oil storage cavity and the plug, lubricating oil is automatically added in the working process of the planetary gear, a worker does not need to frequently add the lubricating oil between gears, and the labor force is reduced.

Description

Technical fields:

[0001] This utility model belongs to the field of gear technology, and specifically refers to a planetary gear. Background technology:

[0002] Planetary gears are gears that, in addition to rotating around their own axis of rotation like fixed-axis gears, also have their axis of rotation rotate around the axes of other gears along with the planet carrier.

[0003] When planetary gears rotate, friction is generated between the meshing teeth, requiring frequent application of lubricating oil to the meshing points. The high frequency of lubricating oil application needs improvement. Summary of the Invention:

[0004] The purpose of this invention is to provide a planetary gear to solve the technical problems mentioned in the background section.

[0005] This utility model is implemented as follows:

[0006] A planetary gear includes a gear body, a circulation chamber and an oil storage chamber on the gear body, a drain pipe on the gear body, the circulation chamber and the drain pipe being used to transport lubricating oil, the circulation chamber and the oil storage chamber being connected, a plurality of oil outlets being provided on the gear body, the plurality of oil outlets being arranged around the outer periphery of the gear body, the oil outlets being connected to the oil storage chamber, and a plug being slidably connected to the gear body, the plug being correspondingly arranged to the oil outlets, the plug protruding from the oil outlets.

[0007] Preferably, the gear body is provided with a partition, the circulation chamber and the oil storage chamber are respectively located on both sides of the partition, the partition is provided with a plurality of connection ports, the connection ports connect the circulation chamber and the oil storage chamber, a plurality of blocking blocks are slidably connected to the partition, the blocking blocks are correspondingly arranged with the connection ports, the blocking blocks slide open and block the connection ports, and the partition is provided with a driving member, the driving member drives the blocking blocks to move.

[0008] Preferably, the block is located on the side of the partition away from the circulation chamber.

[0009] Preferably, the driving component is a thermally expanding and contracting component, which abuts against one end of the block near the partition.

[0010] Preferably, the gear has a return oil chamber, and the gear body has an oil outlet and an oil inlet. The oil inlet and the oil outlet are located on the axis of the gear body. The gear body has several oil collection ports, which are arranged around the outer periphery of the circulation chamber. The oil collection ports connect the circulation chamber and the return oil chamber. The drain pipe includes an oil inlet pipe and an oil outlet pipe provided on the gear body. The oil inlet pipe is connected to the oil inlet and the circulation chamber through the oil inlet. The oil outlet pipe is connected to the oil outlet and the circulation chamber through the oil outlet, the return oil chamber, and the oil collection ports.

[0011] Preferably, a guide surface is formed on the oil return cavity, and the guide surface is gradually tapered along the direction close to the second oil outlet.

[0012] Preferably, the extension channel of the first oil outlet is inclined, and the first oil outlet is inclined downward in a direction away from the oil storage cavity.

[0013] Preferably, the gear body is provided with oil-absorbing cotton, which fills the oil storage cavity.

[0014] The outstanding advantages of this utility model compared to the prior art are:

[0015] 1. This utility model delivers lubricating oil into the circulation pipeline through the diversion pipe to cool the inside of the gear body. Some of the lubricating oil in the circulation pipeline enters the oil storage chamber and flows out from the oil outlet to lubricate the gear meshing parts. Through the circulation channel and the oil storage chamber, it is beneficial to reduce the frequency of adding lubricating oil and reduce the amount of labor.

[0016] 2. This utility model uses a thermal expansion and contraction component to drive the block to move. During the operation of the planetary gear, if the temperature of the planetary gear does not rise, the block will cover the connection port, reducing the amount of lubricating oil entering the oil storage chamber from the circulation channel, which helps to reduce lubricating oil waste. When the temperature of the planetary gear rises, the thermal expansion and contraction component expands, driving the block to move and open, allowing the lubricating oil in the circulation pipeline to enter the oil storage chamber, increasing the lubricating oil content in the oil storage chamber, which helps to improve the lubrication effect.

[0017] 3. By setting the oil collection port around the outer periphery of the circulation channel, this utility model facilitates the lubricating oil in the circulation channel to enter the return oil chamber under the action of centrifugal force, thus facilitating the recovery of lubricating oil. Attached image description:

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a sectional view of the present invention, mainly showing the internal structure of the gear body;

[0020] Figure 3 yes Figure 2 The enlarged view of section A mainly shows the structure of oil port one;

[0021] Figure 4 This is a cross-sectional view of the present invention from another perspective, mainly showing the internal structure of the connection port.

[0022] Instruction manual drawing reference numerals: 1. Gear body; 11. Circulation chamber; 12. Oil return chamber; 121. Guide surface; 13. Oil collection port; 14. Oil inlet; 15. Oil outlet two; 16. Oil storage chamber; 17. Oil outlet one; 2. Drain pipe; 21. Oil inlet pipe; 22. Oil outlet pipe; 3. Partition plate; 31. Connection port; 4. Plug; 5. Oil-absorbing cotton; 6. Plug block; 61. Pressure plate; 62. Sealing block; 7. Drive component; 71. Thermal expansion and contraction component. Detailed implementation method:

[0023] The present invention will be further described below with reference to specific embodiments. See also: Figure 1 —4:

[0024] This application discloses a planetary gear, and see [link to related document]. Figure 1 The gear body 1 is rotatably connected to the gear body 1. The gear body 1 includes an oil inlet pipe 21 and an oil outlet pipe 22. The oil inlet pipe 21 and the oil outlet pipe 22 are located at opposite ends of the gear body 1, and the ends of the oil inlet pipe 21 and the oil outlet pipe 22 connected to the gear body 1 are rotatably connected to the gear body 1.

[0025] See Figure 1 and Figure 2 The gear body 1 has a circulation chamber 11 and a return oil chamber 12, the distribution direction of which is parallel to the axis of the gear. Several oil collection ports 13 are provided on the gear body 1, evenly distributed around the outer circumference of the circulation chamber 11. The projections of the oil collection ports 13 in the direction parallel to the axis of the gear body 1 are located within the circulation chamber 11 and the return oil chamber 12. The oil collection ports 13 connect the circulation chamber 11 and the return oil chamber 12. The gear body 1 has an oil inlet 14 and an oil outlet 15, the axes of which are coaxial with the axis of the gear body 1. The oil inlet 14 is located at the end of the gear body 1 near the oil inlet pipe 21, and the oil inlet pipe 21 is connected to the oil inlet 14. The oil outlet 15 is located at the end of the gear body 1 near the oil outlet pipe 22, and the oil outlet pipe 22 is connected to the oil outlet 15. The oil inlet pipe 21 and the oil outlet pipe 22 are used to transport lubricating oil.

[0026] See Figure 2 A guide surface 121 is machined on the bottom inner wall of the oil return cavity 12, and the guide surface 121 is set to gradually taper downward along the direction close to the oil outlet 15.

[0027] During the operation of the planetary gear, lubricating oil is delivered into the circulation chamber 11 through the oil inlet pipe 21. As the planetary gear rotates, the lubricating oil entering the circulation chamber 11 flows to the outer ring of the circulation chamber 11 under the action of centrifugal force, enters the return oil chamber 12 through the oil collection port 13, and then enters the oil outlet pipe 22 through the oil outlet 15 connected to the return oil chamber 12.

[0028] In actual installation, the oil inlet pipe 21 and the oil outlet pipe 22 are connected to an external oil circulation device, which allows the lubricating oil with a lower temperature to enter the circulation chamber 11 to absorb the heat inside the gear. The lubricating oil leaving the gear enters the oil circulation device for cooling, which helps to improve the heat dissipation efficiency of the planetary gear during operation.

[0029] See Figure 2 The gear body 1 has an oil storage chamber 16, which is arranged around the outer periphery of the circulation chamber 11. A partition 3 is fixed on the gear body 1, which is arranged around the outer periphery of the circulation chamber 11. The oil storage chamber 16 and the circulation chamber 11 are located on the inner and outer sides of the partition 3, respectively. The partition 3 has a number of connection ports 31, which are evenly distributed around the outer periphery of the circulation chamber 11. The oil collection port 13 is located on the side of the partition 3 close to the axis of the gear body 1. The line connecting the center of the oil collection port 13 and the axis of the gear body 1 forms an angle with the line connecting the center of the connection port 31 and the gear body 1. The connection port 31 connects the oil storage chamber 16 and the circulation chamber 11.

[0030] See Figure 2 and Figure 3 The gear body 1 has several oil outlets 17 located at the tooth grooves of the gear body 1. The oil outlets 17 are connected to the oil storage chamber 16. The lubricating oil in the oil storage chamber 16 flows out of the oil outlets 17 and is then coated on the surface of the gear body 1 and the gear meshing with the gear body 1.

[0031] See Figure 2 and Figure 3 The oil outlet 17 extends at an angle, tilting downwards away from the axis of the gear body 1. Several plugs 4 are slidably connected to the gear body 1, their positions and numbers corresponding to the positions and numbers of the oil outlets 17. The plugs 4 are slidably connected within the oil outlets 17, their sliding direction parallel to the extension direction of the corresponding oil outlet 17. The plugs 4 are spherical. When the planetary gear is not meshing with other gears, the plugs 4 slide and protrude from the surface of the gear body 1 under their own weight. When the planetary gear meshes with other gears, the plugs 4 are pressed into the oil reservoir 16, and the lubricating oil in the reservoir 16 flows out along the gap between the plugs 4 and the gear body 1. The use of plugs 4 helps control the flow of lubricating oil.

[0032] See Figure 2 and Figure 3 The gear body 1 is filled with oil-absorbing cotton 5, which fills the oil storage cavity 16 and adheres to the plug 4. A plug 6 is slidably connected to the partition 3. The position and number of the plug 6 correspond one-to-one with the position and number of the connection port 31. The plug 6 includes a pressure plate 61 and a sealing block 62. The position and number of the sealing block 62 correspond one-to-one with the position and number of the connection port 31. The sealing block 62 slides into or out of the corresponding connection port 31, opening and sealing the connection port 31. The pressure plate 61 is located on the side of the sealing block 62 away from the circulation cavity 11. The pressure plate 61 is fixedly connected to the sealing block 62 and is located in the oil storage cavity 16. The pressure plate 61 adheres to the oil-absorbing cotton 5. A driving component 7 is fixed on the partition 3. The driving component 7 drives the plug 6 and the pressure plate 61 to move.

[0033] See Figure 2 and Figure 4 The driving component 7 includes several thermal expansion and contraction components 71. The position and number of the thermal expansion and contraction components 71 correspond one-to-one with the position and number of the blocking blocks 6. The thermal expansion and contraction components 71 are located on the side of the partition 3 away from the circulation chamber 11, and are located between the partition 3 and the corresponding pressure plate 61. The opposite ends of the thermal expansion and contraction components 71 are fixedly connected to the partition 3 and the pressure plate 61, respectively. In this embodiment, the thermal expansion and contraction components 71 are made of nickel-titanium alloy, but in other embodiments they can also be made of copper-zinc alloy, copper-aluminum alloy, etc.

[0034] During the operation of the planetary gear, as the gear rotates, the lubricating oil in the oil reservoir 16 is applied to the gear surface through the gap between the plug 4 and the gear body 1. As the planetary gear operates, the lubricating oil capacity in the oil reservoir 16 decreases, and gear friction causes the temperature of the gear body 1 to rise. The thermal expansion and contraction component 71 expands, causing the pressure plate 61 to move away from the partition 3, which in turn causes the sealing block 62 to move away from the corresponding connection port 31, opening the connection port 31. Lubricating oil in the circulation chamber enters the oil reservoir 16 to replenish the lubricating oil. At the same time, the pressure plate 61 squeezes the oil-absorbing cotton 5 to improve the lubrication effect. When the planetary gear temperature returns to the normal range, the thermal expansion and contraction component 71 contracts, causing the pressure plate 61 and the sealing block 62 to move closer to the partition 3 to reseal the connection port, which helps to reduce lubricating oil waste.

[0035] The implementation principle of a planetary gear in this application embodiment is as follows: by setting an oil storage chamber 16 and a plug 4, it is convenient to automatically add lubricating oil during the operation of the planetary gear, which helps to reduce the frequency of adding lubricating oil and eliminates the need for workers to frequently add lubricating oil between the gears, thus reducing labor.

[0036] The above embodiments are only one of the preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes made in accordance with the shape, structure and principle of this utility model should be covered within the protection scope of this utility model.

Claims

1. A planetary gear, characterized in that: The gear body (1) includes a gear body (1), which has a circulation chamber (11) and an oil storage chamber (16). The gear body (1) is provided with a drain pipe (2), which is connected to the circulation chamber (11) and the drain pipe (2). The drain pipe (2) is used to transport lubricating oil. The circulation chamber (11) and the oil storage chamber (16) are connected. The gear body (1) has a plurality of oil outlets (17), which are arranged around the outer periphery of the gear body (1). The oil outlets (17) are connected to the oil storage chamber (16). A plug (4) is slidably connected to the gear body (1). The plug (4) is correspondingly arranged to the oil outlets (17), and the plug (4) protrudes from the oil outlets (17).

2. A planetary gear according to claim 1, characterized in that: The gear body (1) is provided with a partition (3). The circulation chamber (11) and the oil storage chamber (16) are located on both sides of the partition (3). The partition (3) is provided with a plurality of connection ports (31). The connection ports (31) connect the circulation chamber (11) and the oil storage chamber (16). A plurality of blocking blocks (6) are slidably connected on the partition (3). The blocking blocks (6) are correspondingly arranged with the connection ports (31). The blocking blocks (6) slide open and block the connection ports (31). The partition (3) is provided with a driving member (7). The driving member (7) drives the blocking blocks (6) to move.

3. A planetary gear according to claim 2, characterized in that: The block (6) is located on the side of the partition (3) away from the circulation chamber (11).

4. A planetary gear according to claim 3, characterized in that: The driving component (7) is a thermal expansion and contraction component (71), which abuts against the end of the block (6) near the partition (3).

5. A planetary gear according to claim 2, characterized in that: The gear body (1) has an oil return chamber (12), an oil outlet (15) and an oil inlet (14) on the gear body (1), the oil inlet (14) and the oil outlet (15) are located on the axis of the gear body (1), and the gear body (1) has a plurality of oil collection ports (13), so the oil collection ports (13) are arranged around the outer periphery of the circulation chamber (11), and the oil collection ports (13) connect the circulation chamber (11) and the oil return chamber (12). The flow pipe (2) includes an oil inlet pipe (21) and an oil outlet pipe (22) disposed on the gear body (1). The oil inlet pipe (21) is connected to the oil inlet (14). The oil inlet pipe (21) is connected to the circulation chamber (11) through the oil inlet (14). The oil outlet pipe (22) is connected to the second oil outlet (15). The oil outlet pipe (22) is connected to the circulation chamber (11) through the second oil outlet (15), the return oil chamber (12), and the oil collection port (13).

6. A planetary gear according to claim 5, characterized in that: A guide surface (121) is formed on the oil return cavity (12), and the guide surface (121) is gradually tapered along the direction close to the second oil outlet (15).

7. A planetary gear according to claim 1, characterized in that: The extension channel of the oil outlet (17) is inclined, and the oil outlet (17) is inclined downward in a direction away from the oil storage chamber (16).

8. A planetary gear according to claim 1, characterized in that: The gear body (1) is provided with oil-absorbing cotton (5), and the oil-absorbing cotton (5) fills the oil storage cavity (16).

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