Gearbox oil extraction device

Abstract

This invention relates to the technical field of gearbox oil extraction devices, and in particular to a gearbox oil extraction device. It includes a transition oil tank and a collection oil tank. The transition oil tank is connected to the gearbox's oil inlet via an inlet pipe, and to the collection oil tank via an outlet pipe. The inlet pipe is equipped with an inlet valve, and the outlet pipe is equipped with an outlet valve. The transition oil tank is positioned lower than the gearbox, and the collection oil tank is positioned higher than the transition oil tank. The bottom end of the outlet pipe is inserted into the bottom of the transition oil tank. The technical solution provided by this invention utilizes the principles of gravity flow and closed-loop air pressure storage. The device requires no power supply, no manual air pumping, and no vacuum pump, achieving continuous and automatic extraction of gearbox oil. The entire operation requires no manual intervention, greatly reducing labor costs and making it suitable for environments without power supply and in confined engine rooms. The overall structure is simple, with no complex precision parts, resulting in low manufacturing, assembly, and maintenance costs, making it suitable for mass production and manufacturing.

Description

Technical Field

[0001] This invention relates to the field of gearbox oil extraction device technology, and in particular to a gearbox oil extraction device. Background Technology

[0002] Gearboxes are core transmission components in various mechanical equipment, power equipment, and engine room equipment. During operation, the lubricating oil needs to be changed regularly to ensure the gearbox's transmission accuracy and service life. Currently, there are two main methods for extracting oil from gearboxes: one is manual pouring, which is cumbersome, inefficient, and prone to oil spillage and equipment contamination; the other uses electric oil pumps or vacuum pumps, which require external power and pneumatic equipment, resulting in high equipment costs and large size, making them unusable in confined engine rooms or without power supply, thus limiting their applicability.

[0003] To address the problems of poor adaptability to non-powered systems and limited operating conditions in existing technologies, this invention designs an adaptive, non-powered, fully automatic gearbox oil extraction device to solve the aforementioned technical problems. Summary of the Invention

[0004] The purpose of this invention is to provide a gearbox oil extraction device that can continuously and automatically extract gearbox lubricating oil without the need for external power sources such as power supply or air supply. The device has a simple structure and is suitable for confined working environments without power.

[0005] This invention provides a gearbox oil extraction device, comprising a transition oil tank and a collecting oil tank. The transition oil tank is connected to the gearbox's oil extraction port via an oil inlet pipe, and the transition oil tank is connected to the collecting oil tank via an oil outlet pipe. The oil inlet pipe is equipped with an oil inlet valve, and the oil outlet pipe is equipped with an oil outlet valve. The transition oil tank is located below the gearbox, and the collecting oil tank is located above the transition oil tank. The bottom end of the oil outlet pipe is inserted into the bottom of the transition oil tank.

[0006] Furthermore, the volume of the transition oil tank is smaller than that of the oil collection tank, and the transition oil tank is made of a transparent material.

[0007] Furthermore, one end of the oil inlet pipe is connected to the oil outlet of the gearbox via an oil tap, and the other end of the oil inlet pipe is provided with a first threaded connector. A first nut is fitted over the outside of the first threaded connector. An oil inlet pipe is provided on the top of the transition oil tank, and the first threaded connector and the oil inlet pipe are connected via the first nut.

[0008] Furthermore, a one-way valve is provided at one end of the oil inlet pipe near the gearbox, and a filter device is provided between the one-way valve and the oil inlet valve.

[0009] Furthermore, the oil outlet pipe is provided with a threaded connector in the middle, and a second nut is fitted on the outside of the threaded connector. The top of the transition oil tank is provided with an oil outlet connector. The oil outlet pipe passes through the oil outlet connector and is inserted into the interior of the transition oil tank. The threaded connector is connected to the oil outlet connector through the second nut.

[0010] Furthermore, the top of the oil collection tank is provided with an oil inlet, a connecting pipe is provided at the oil inlet, one end of the oil outlet pipe is provided with a second threaded connector, a third nut is fitted on the outside of the second threaded connector, and the second threaded connector is connected to the connecting pipe through the third nut.

[0011] Furthermore, it also includes two height-adjustable support frames, on which the transition oil tank and the oil collection tank are respectively placed.

[0012] Furthermore, the support frame includes a base, a placement frame is provided above the base, and a telescopic rod is provided between the base and the placement frame. The top and bottom of the telescopic rod are fixedly connected to the base and the placement frame, respectively.

[0013] Furthermore, the telescopic rod includes an upper tube, a lower tube, and fastening bolts. The upper tube is located inside the lower tube and can slide up and down. The side wall of the upper tube is provided with a plurality of first fixing holes in the vertical direction, and the lower tube is provided with a plurality of second fixing holes. The upper tube and the lower tube are connected by the fastening bolts.

[0014] This invention provides a method for extracting oil from a gearbox using the aforementioned device, comprising the following steps: S1. Place the transition oil tank and the oil collection tank, ensuring that the position of the transition oil tank is lower than the oil inlet of the gearbox and the position of the oil collection tank is higher than the transition oil tank; connect the oil inlet pipe and the oil outlet pipe to the transition oil tank and the oil collection tank respectively, and ensure that the oil inlet valve and the oil outlet valve are both in the closed state. S2. Connect the end of the oil inlet pipe to the oil outlet of the gearbox, and first open the oil outlet valve to connect the transition oil tank and the oil collection tank. S3. Open the inlet valve. The oil in the gearbox flows into the transition tank by gravity, gradually compressing the atmospheric pressure air at the top of the transition tank, causing its internal pressure to rise continuously. When the pressure is greater than ρ×g×H, the oil begins to be forced from the inside of the transition tank into the collection tank through the outlet pipe. Maintain the inlet flow rate not lower than the outlet flow rate to achieve continuous automatic oil extraction. Here, ρ is the density of the oil inside the gearbox, g is the acceleration due to gravity, and H is the height difference between the liquid level in the transition tank and the inlet of the collection tank. S4. After the gearbox oil has been completely extracted, first close the oil inlet valve, separate the oil inlet pipe from the gearbox, and then close the oil outlet valve.

[0015] In summary, compared with the prior art, the present invention has the following advantages: The technical solution provided by this invention utilizes the principles of gravity flow and closed-loop air pressure storage. The device requires no power supply, no manual air pumping, and no vacuum pump, achieving continuous and automatic extraction of gearbox oil. The entire operation requires no manual intervention, greatly reducing labor costs and making it suitable for environments without power supply and in confined engine rooms. The overall structure is extremely simple, with no complex precision parts, resulting in low manufacturing, assembly, and maintenance costs, making it suitable for mass production and collaborative creation. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the oil extraction device in Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the oil extraction device in Embodiment 2 of the present invention; Figure 3 This is a schematic diagram of the transition oil tank and support frame in Embodiment 2 of the present invention.

[0018] Explanation of reference numerals in the attached drawings: 1-Transition oil tank; 101-Inlet pipe; 102-Outlet pipe; 2-Collection tank; 201-Connecting pipe; 3-Inlet pipe; 301-Oil tap; 302-First threaded connector; 303-First nut; 4-Outlet pipe; 401-Threaded connector; 402-Second nut; 403-Second threaded connector; 404-Third nut; 5-Gearbox; 6-Inlet valve; 7-Filter device; 8-Check valve; 9-Outlet valve; 10-Base; 11-Telescopic rod; 1101-Upper pipe body; 1102-Lower pipe body; 1103-First fixing hole; 1104-Second fixing hole; 1105-Fastening bolt; 12-Placement frame. Detailed Implementation

[0019] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they may refer to a fixed connection, a detachable connection, or an integral connection; they may refer to a mechanical connection or an electrical connection; they may refer to a direct connection or an indirect connection through an intermediate medium; and they may refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0022] Example 1 A gearbox oil extraction device, such as Figure 1 As shown, it includes a transition oil tank 1, an oil collection tank 2, an oil inlet pipe 3, and an oil outlet pipe 4, the details of which are as follows: The transition oil tank 1 is made of transparent, rigid, pressure-resistant plastic, allowing operators to easily observe the internal oil intake status, oil cleanliness, and pressure storage conditions. The collecting oil tank 2 is made of plastic and has a larger volume than the transition oil tank 1, effectively accommodating continuously discharged oil and preventing spillage pollution. During installation and use, the overall height of the transition oil tank 1 is lower than the oil inlet of the gearbox 5 to ensure sufficient gravity flow power. The collecting oil tank 2 is positioned higher than the top of the transition oil tank 1, creating a stable high-low oil delivery drop to meet the requirements of closed-loop pressurized oil delivery.

[0023] The top of the transition oil tank 1 is fixed with an oil inlet pipe 101 and an oil outlet pipe 102, which are used to connect the oil inlet pipe 3 and the oil outlet pipe 4, respectively. An oil tap 301 is fixedly installed at the end of the oil inlet pipe 3 closest to the gearbox 5. The oil tap 301 is sealed and plugged into the oil outlet of the gearbox 5, allowing for easy assembly and disassembly with good sealing. The oil tap 301 can be any commonly used connector in this field. A first threaded connector 302 is fixedly installed at the end of the oil inlet pipe 3 furthest from the gearbox 5. A first nut 303 is fitted over the first threaded connector 302. The first threaded connector 302 is inserted into the oil inlet pipe 101 of the transition oil tank 1 and is sealed by the threaded locking of the first nut 303, thus achieving a detachable and sealed connection between the oil inlet pipe 3 and the transition oil tank 1.

[0024] Along the oil flow direction, a one-way valve 8, a filter device 7, and an oil inlet valve 6 are sequentially installed on the oil inlet pipe 3. The one-way valve 8 is located near the gearbox 5 and can effectively prevent oil vapor and oil from flowing back into the gearbox 5 during the pressurization process of the transition oil tank 1, thus avoiding equipment contamination. The filter device 7 adopts a detachable filter element structure and is detachably connected to the oil inlet pipe 3, effectively intercepting metal shavings and dust impurities in the lubricating oil to ensure the cleanliness of the oil. The oil inlet valve 6 is used to control the opening and closing of the oil inlet passage and realize the start and stop oil inlet control.

[0025] A threaded connector 401 is fixedly installed in the middle of the oil outlet pipe 4. A second nut 402 is fitted onto the outside of the threaded connector 401. The bottom end of the oil outlet pipe 4 passes through the oil outlet connector 102 and is inserted into the interior of the transition oil tank 1, close to the inner bottom wall of the transition oil tank 1. At this time, the threaded connector 401 is locked and sealed with the oil outlet connector 102 by the second nut 402, ensuring the overall airtight and pressure-holding performance of the transition oil tank 1. The lower end of the oil outlet pipe 4 extends vertically into the bottom of the transition oil tank 1, maintaining a small gap with the bottom wall of the tank, which can fully extract oil while avoiding the adsorption of impurities deposited at the bottom.

[0026] A second threaded connector 403 is installed at the upper end of the oil outlet pipe 4, and a third nut 404 is fitted onto the outside of the second threaded connector 403. An oil inlet is provided at the top of the oil collection tank 2, and a connecting pipe 201 is fixedly connected to the oil inlet. The second threaded connector 403 is inserted into the connecting pipe 201 and locked and sealed by the third nut 404, realizing a sealed and detachable connection between the oil outlet pipe 4 and the oil collection tank 2. An oil outlet valve 9 is fixedly installed on the oil outlet pipe 4 to control the opening and closing of the oil outlet passage, and works with the oil inlet valve 6 to achieve controllable pressure adjustment.

[0027] In this invention, all threaded connections in the pipeline are equipped with sealing gaskets to ensure that the entire process is airtight and leak-proof under pressurization and negative pressure conditions.

[0028] The specific operation process of using the oil sampling device provided in this embodiment to sample oil from the gearbox is as follows: S1. Place the transition oil tank 1 and the oil collection tank 2, so that the position of the transition oil tank 1 is lower than the oil outlet of the gearbox 5 and the position of the oil collection tank 2 is higher than the transition oil tank 1; seal the oil inlet pipe 3 and the oil outlet pipe 4 to the transition oil tank 1 and the oil collection tank 2, and ensure that the oil inlet valve 6 and the oil outlet valve 9 are both closed. S2. Connect the oil inlet pipe 3 to the oil outlet of gearbox 5 in a sealed manner. First, open the oil outlet valve 9 to connect the transition oil tank 1 with the oil collection tank 2. At this time, there is no pressure in the transition oil tank 1 and the oil will not flow out. S3. Open the oil inlet valve 6. The oil in the gearbox 5 flows into the transition oil tank 1 by gravity, gradually compressing the atmospheric pressure air at the top of the transition oil tank 1, causing its internal pressure to rise continuously. When the pressure is greater than ρ×g×H, the oil begins to be forced from the inside of the transition oil tank into the oil collection tank through the oil outlet pipe. Maintain the oil inlet flow rate not lower than the oil outlet flow rate to achieve continuous automatic oil extraction. Here, ρ is the oil density, g is the gravitational acceleration, and H is the height difference between the liquid surface of the transition oil tank 1 and the oil inlet of the oil collection tank 2. S4. After the oil in gearbox 5 is completely extracted, first close the oil inlet valve 6, remove the oil tap 301 from gearbox 5, close the oil outlet valve 9, separate the oil outlet pipe 4 from the oil collection tank 2, and keep the oil inlet pipe 3 and the oil outlet pipe 4 in a sealed connection with the transition oil tank 1. The transition oil tank 1 contains residual high-pressure air, which can be used directly when changing the oil next time without refilling.

[0029] Example 2 A gearbox oil extraction device, the technical solution of which is basically the same as that of Embodiment 1, the difference being that: this embodiment is provided with an adjustable height support frame, the details of which are as follows: like Figure 2 and Figure 3 As shown, this embodiment is equipped with two sets of independent height-adjustable support frames, used to place the transition oil tank 1 and the oil collection tank 2 respectively. The support frame includes a base 10 and a placement frame 12. The base 10 is an anti-slip and weighted base, and the placement frame 12 is used to place the oil tank. The height of the placement frame 12 is not less than half the height of the corresponding oil tank, limiting and wrapping the oil tank, and ensuring strong placement stability. A telescopic rod 11 is vertically fixed between the base 10 and the placement frame 12. The telescopic rod 11 adopts a stainless steel telescopic structure, including an upper tube 1101, a lower tube 1102, and fastening bolts 1105. The upper tube 1101 is slidably sleeved inside the lower tube 1102. The upper tube 1101 and the lower tube 1102 are respectively provided with multiple first fixing holes 1103 and second fixing holes 1104 along the height direction. After adjusting to the target height, the height is fixed by fastening the fastening bolts 1105 through the alignment holes. The height can be adjusted by the telescopic rod 11, which can be precisely adapted to gearbox equipment of different heights, making it highly versatile.

[0030] This invention utilizes a combined oil extraction principle of height difference layout and closed pressurization, eliminating the need for an external power source. The lower-level transition oil tank receives the lubricating oil discharged from the gearbox by gravity. As the oil continuously flows in, it compresses the air inside the transition oil tank, creating high pressure. When the air pressure inside the oil tank exceeds the liquid column pressure ρ×g×H, the high-pressure gas overcomes the static pressure of the high-level liquid column and the back pressure formed by the compressed air in the closed oil collection tank, continuously pushing the oil to the high-level oil collection tank. Combined with a pre-filter and a one-way anti-backflow structure, it ensures the cleanliness of the extracted oil and the safety of the equipment. Furthermore, the adjustable support frame allows for adaptation to multiple operating conditions, making it highly practical.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A gearbox oil extraction device, characterized in that, It includes a transition oil tank (1) and a collection oil tank (2). The transition oil tank (1) is connected to the oil outlet of the gearbox through an oil inlet pipe (3). The transition oil tank (1) is connected to the collection oil tank (2) through an oil outlet pipe (4). An oil inlet valve (6) is provided on the oil inlet pipe (3). An oil outlet valve (9) is provided on the oil outlet pipe (4). The position of the transition oil tank (1) is lower than that of the gearbox. The position of the collection oil tank (2) is higher than that of the transition oil tank (1). The end of the oil outlet pipe (4) is inserted into the bottom of the transition oil tank (1).

2. The gearbox oil extraction device according to claim 1, characterized in that, The volume of the transition oil tank (1) is smaller than that of the oil collection tank (2), and the transition oil tank (1) is made of transparent material.

3. The gearbox oil extraction device according to claim 1, characterized in that, One end of the oil inlet pipe (3) is connected to the oil outlet of the gearbox via an oil tap (301). The other end of the oil inlet pipe (3) is provided with a first threaded connector (302). A first nut (303) is fitted on the outside of the first threaded connector (302). The top of the transition oil tank (1) is provided with an oil inlet pipe (101). The first threaded connector (302) and the oil inlet pipe (101) are connected via the first nut (303).

4. The gearbox oil extraction device according to claim 1, characterized in that, The oil inlet pipe (3) is provided with a one-way valve (8) at one end near the gearbox, and a filter device (7) is provided between the one-way valve (8) and the oil inlet valve (6).

5. The gearbox oil extraction device according to claim 1, characterized in that, The oil outlet pipe (4) is provided with a threaded connector (401) in the middle, and a second nut (402) is fitted on the outside of the threaded connector (401). The top of the transition oil tank (1) is provided with an oil outlet connector (102). The oil outlet pipe (4) passes through the oil outlet connector (102) and is inserted into the interior of the transition oil tank (1). The threaded connector (401) is connected to the oil outlet connector (102) through the second nut (402).

6. The gearbox oil extraction device according to claim 1, characterized in that, The top of the oil collection tank (2) is provided with an oil inlet, and a connecting pipe (201) is provided at the oil inlet. One end of the oil outlet pipe (4) is provided with a second threaded connector (403). A third nut (404) is fitted on the outside of the second threaded connector (403). The second threaded connector (403) is connected to the connecting pipe (201) through the third nut (404).

7. The gearbox oil extraction device according to claim 1, characterized in that, It also includes two height-adjustable support frames, on which the transition oil tank (1) and the oil collection tank (2) are respectively placed.

8. The gearbox oil extraction device according to claim 7, characterized in that, The support frame includes a base (10), a placement frame (12) is provided above the base (10), and a telescopic rod (11) is provided between the base (10) and the placement frame (12). The top and bottom of the telescopic rod (11) are fixedly connected to the base (10) and the placement frame (12) respectively.

9. The gearbox oil extraction device according to claim 8, characterized in that, The telescopic rod (11) includes an upper tube (1101), a lower tube (1102), and fastening bolts (1105). The upper tube (1101) is located inside the lower tube (1102) and can slide up and down. The side wall of the upper tube (1101) is provided with a plurality of first fixing holes (1103) in the vertical direction. The lower tube (1102) is provided with a plurality of second fixing holes (1104). The upper tube (1101) and the lower tube (1102) are connected by the fastening bolts (1105).

10. A method for extracting oil from a gearbox using the apparatus according to any one of claims 1-9, characterized in that, Includes the following steps: S1. Place the transition oil tank (1) and the oil collection tank (2) so that the position of the transition oil tank (1) is lower than the oil inlet of the gearbox and the position of the oil collection tank (2) is higher than the transition oil tank (1); connect the oil inlet pipe (3) and the oil outlet pipe (4) to the transition oil tank (1) and the oil collection tank (2) respectively, and ensure that the oil inlet valve (6) and the oil outlet valve (9) are both closed; S2. Connect the end of the oil inlet pipe (3) to the oil outlet of the gearbox, and first open the oil outlet valve (9) to connect the transition oil tank (1) with the oil collection tank (2); S3. Open the inlet valve (6), and the oil in the gearbox flows into the transition oil tank (1) by gravity. Gradually compress the atmospheric pressure air at the top of the transition oil tank (1) to make its internal pressure continuously increase. When the pressure is greater than ρ×g×H, the oil begins to be forced from the inside of the transition oil tank (1) into the oil collection tank (2) through the oil outlet pipe (4). Keep the inlet flow rate not lower than the outlet flow rate to achieve continuous automatic oil extraction. ρ is the density of the oil inside the gearbox, g is the gravitational acceleration, and H is the height difference between the liquid surface of the transition oil tank and the oil inlet of the oil collection tank. S4. After the gearbox oil is completely extracted, first close the oil inlet valve (6), separate the oil inlet pipe (3) from the gearbox, and then close the oil outlet valve (9).

Images