Oil pumping device for injecting oil into gear box

Abstract

The utility model relates to an oil pumping device for injecting oil into a gearbox. The oil pumping device comprises a pumping part, a first oil pumping pipe, a second oil pumping pipe and an adjusting part, the output end of the pumping part is communicated with an oil filling port of the gear box, the input end of the pumping part is sequentially communicated with a first oil pumping pipe and a second oil pumping pipe, and an internal thread of the first oil pumping pipe is matched with an external thread of the second oil pumping pipe; one end of the telescopic rod is in transmission connection with the forward and reverse rotation motor, and the other end of the telescopic rod is fixed to the second oil pumping pipe. According to the oil pumping device used for injecting oil into the gearbox, the forward and reverse rotation motor drives the telescopic rod to rotate in the forward direction or the reverse direction, the second oil pumping pipe is driven to rotate, then the second oil pumping pipe is made to retract into or stretch out of the first oil pumping pipe, and the oil pumping device can be adjusted to the proper length when used for oil barrels with different depths; the method has the advantages of excellent adaptability and convenience in operation.

Description

Technical Field

[0001] The utility model relates to the technical field of lubricating oil filling, in particular to an oil pump for filling oil into a gear box. Background Art

[0002] Gearbox lubrication refers to the application of lubricating oil or grease inside the gearbox to reduce friction and wear between gears, bearings and other moving parts. In order to ensure the normal operation of the gearbox in the factory and extend its service life, it is generally necessary to replace the lubricating oil in the gearbox regularly.

[0003] When replacing the lubricating oil, the old oil in the gear box is generally discharged from the oil drain port provided in the gear box first, and then new lubricating oil is added; specifically, the lubricating oil is added to the gear box using an oil extractor. Since the lubricating oil has a certain viscosity, the current oil extractor generally uses a hard tube body as an oil extraction pipe connected to the input end of the oil pump to facilitate reaching the bottom of the oil barrel, and then the oil drain pipe connected to the output end of the oil pump is extended into the oil filling port of the gear box, and finally the oil pump is turned on to achieve the addition of new lubricating oil.

[0004] Because the sizes of lubricating oil drums of different manufacturers, different series of the same manufacturer, and different specifications of the same series of the same manufacturer, especially the depth of the oil drums, are quite different, and the length of the oil extraction pipe of the current oil extractor is fixed; on the one hand, when the depth of the oil drum is relatively small, the oil extraction pipe will continue to be exposed to the outside of the oil drum during the entire oil filling operation, and it is easy to be attached to debris in the air, increasing the risk of introducing impurities into the lubricating oil, especially when it is necessary to fill multiple gearboxes and lubricating oil drums of different depths, the oil extraction pipe will be attached to the oil drum during the filling operation when the depth is relatively small. When the oil filling pipe is inserted into an oil drum with a relatively large depth, the lubricating oil will be contaminated and the quality of the lubricating oil will be reduced. In particular, when the depth of the oil drum is too small, the oil extraction pipe will be unstable and on-site personnel will need to support the oil extraction pipe, which brings inconvenience to the oil filling operation. On the other hand, when the depth of the oil drum is large, the oil extraction pipe cannot reach the bottom of the oil drum. The remaining lubricating oil in the oil drum needs to be poured into another container of suitable depth, and then the oil extractor is used for oil filling operation, which not only increases the risk of lubricating oil being contaminated, but also brings inconvenience to the oil filling operation. Utility Model Content

[0005] Based on this, the purpose of the utility model is to provide an oil pump for injecting oil into a gear box, wherein the forward and reverse motor drives the telescopic rod to rotate forward or reversely in the direction in which the second oil pumping pipe extends, thereby driving the second oil pumping pipe to rotate forward or reversely, and then the second oil pumping pipe is retracted into the first oil pumping pipe or extended from the first oil pumping pipe under the action of the cooperation between the internal thread and the external thread, so that the oil pump can be adjusted to a suitable length when used in oil drums of different depths, and has the advantages of excellent adaptability and convenient operation.

[0006] 14. The oil pumping device as claimed in claim 13, wherein the first oil pumping pipe and the second oil pumping pipe are connected respectively to the oil pumping port of the gear box and the oil pumping port of the gear box, the oil pumping port of the gear box being connected to ...

[0007] The utility model discloses an oil pump for injecting oil into a gear box, which drives the telescopic rod to rotate forwardly or reversely in the direction in which the second oil pumping pipe extends by a forward and reverse motor, thereby driving the second oil pumping pipe to rotate forwardly or reversely, and then the second oil pumping pipe is retracted into the first oil pumping pipe or extended from the first oil pumping pipe under the action of the cooperation between the internal thread and the external thread, so that the oil pumping device can be adjusted to a suitable length when used for oil drums of different depths, and has the advantages of excellent adaptability and convenient operation.

[0008] Furthermore, it also includes a measuring unit and a display screen, wherein the measuring unit includes a distance sensor, which is arranged close to the bottom end of the second oil pumping pipe, and the distance sensor measures the distance between the current position and the bottom of the container loaded with lubricating oil and displays it on the display screen. By arranging the measuring unit and the display screen, the distance between the bottom end of the second oil pumping pipe and the bottom of the container loaded with lubricating oil is converted into visible data, so that the operator can adjust the second oil pumping pipe more accurately.

[0009] Furthermore, a forward and reverse switch is also included, and the forward and reverse switch is electrically connected to the forward and reverse motor. By providing the forward and reverse switch, the operator can adjust the length of the second oil pumping pipe extending from the first oil pumping pipe more conveniently and accurately.

[0010] Furthermore, a control unit is included, the control unit is electrically connected to the forward and reverse motor, the measuring unit and the display screen, and when the distance between the distance measuring sensor and the bottom of the container loaded with lubricating oil reaches a preset distance, the control unit controls the forward and reverse motor to stop running. By setting up the control unit, the second oil pumping pipe is prevented from touching the bottom and being damaged.

[0011] Furthermore, it also includes a filter part, which is sleeved on the bottom end of the second oil extraction pipe and sealed. By setting the filter part, the lubricating oil in the oil barrel is filtered, further ensuring that the lubricating oil extracted by the oil extractor is clean.

[0012] Furthermore, it also includes a dustproof part, which is sleeved on the first oil extraction pipe, and includes a dustproof plate and a plurality of supporting legs fixed on the dustproof plate, the dustproof plate is provided with an oil pipe hole, the first oil extraction pipe is arranged to pass through the oil pipe hole, and the supporting legs are arranged around the outer circumference of the oil pipe hole. By setting the dustproof part, after the first oil extraction pipe and the second oil extraction pipe are extended into the oil barrel, the cover is arranged at the opening of the oil barrel, so as to prevent external dust and debris from entering the oil barrel during the oil filling operation, and keep the lubricating oil clean.

[0013] Furthermore, a battery is also included, and the battery is electrically connected to the forward and reverse motor. By providing the battery, the wiring harness required for the oil pumping operation is reduced, the convenience of using the oil pump is increased, and the oil pump is convenient to operate at the gear box at different positions.

[0014] Furthermore, it also includes a moving part, the pumping part is fixed on the moving part, and the moving part includes a plurality of pulleys. By setting the moving part, the pumping part with a larger weight can be moved, which is convenient for the pumping part to move between gear boxes at different positions, making the oil injection process more labor-saving and convenient.

[0015] Furthermore, the adjustment part also includes a coupling, a rotating shaft, a first bevel gear and a second bevel gear. The forward and reverse motor, the coupling and one end of the rotating shaft are located outside the first pumping pipe, and the other end of the rotating shaft, the first bevel gear and the second bevel gear are located inside the first pumping pipe. The driving shaft of the forward and reverse motor is fixed to one end of the rotating shaft through the coupling, and the other end of the rotating shaft is fixed to the first bevel gear. The second bevel gear is fixed to one end of the telescopic rod, and the first bevel gear is meshed with the second bevel gear. The forward and reverse motor is arranged outside the first pumping pipe to avoid the sealing design of the motor and reduce the production cost of the pumping unit.

[0016] Furthermore, the adjustment part further includes an axial bearing, the axial bearing is located in the first oil pumping pipe, the axial bearing is sleeved on the telescopic rod, and the two sides of the axial bearing are respectively in contact with the lower end of the second bevel gear and the first oil pumping pipe. By providing the axial bearing, the loss of the second bevel gear during rotation is reduced, and the use cost of the oil pumping unit is reduced.

[0017] In order to better understand and implement the present invention, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of an oil pump for injecting oil into a gear box according to an embodiment;

[0019] Figure 2It is a structural schematic diagram of an oil pump for injecting oil into a gear box according to an embodiment;

[0020] Figure 3 It is a structural schematic diagram of a filter unit according to an embodiment;

[0021] Figure 4 A schematic diagram of the structure of a dustproof part according to an embodiment;

[0022] Figure 5 is a schematic structural diagram of a moving part according to an embodiment;

[0023] Figure 6 is a schematic structural diagram of an adjusting unit according to an embodiment;

[0024] Figure 7 It is a structural schematic diagram of an oil pump for injecting oil into a gear box according to an embodiment;

[0025] Among them, there are a pumping motor 11, a power switch 12, a three-phase plug 13, a pump body 14, a first oil extraction pipe 2, a second oil extraction pipe 3, a forward and reverse motor 41, a telescopic rod 42, a coupling 43, a rotating shaft 44, a first bevel gear 45, a second bevel gear 46, a measuring part 5, a display screen 6, a filtering part 7, a dustproof part 8, a dustproof plate 81, a supporting foot 82, a storage table 91, a hand push part 92, and a pulley 93. DETAILED DESCRIPTION

[0026] It should be clear that the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the embodiments of the present application.

[0027] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the embodiments of the present application. The singular forms of "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0028] When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims. In the description of the present application, it is to be understood that the terms "first", "second", "third", etc. are only used to distinguish similar objects, and do not have to be used to describe a specific order or sequence, nor can they be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0029] In addition, in the description of this application, unless otherwise specified, "plurality" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0030] It should be understood that the embodiments of the present application are not limited to the precise structures described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the embodiments of the present application is limited only by the appended claims.

[0031] It should be noted that the gearbox described in the present invention is usually provided with an oil drain hole at the bottom and an oil filling hole at the top. The oil drain hole is used to discharge the lubricating oil in the gearbox from the inside of the gearbox, and the oil filling hole is used to inject lubricating oil into the gearbox (i.e., perform oil filling operation).

[0032] It should also be noted that the lubricating oil injected in the oil filling operation described in the present invention is usually derived from a barreled lubricating oil product. Usually, the aforementioned container for loading the lubricating oil is called an oil barrel; usually, the top of the oil barrel is provided with an oil extraction hole with a removable oil cover, the bottom of the oil barrel is flat, and the oil in the barrel is generally in a transparent fluid state.

[0033] See also Figure 1, this embodiment provides an oil pump for injecting oil into a gearbox, comprising a pumping unit, a first oil pumping pipe 2, a second oil pumping pipe 3 and an adjusting unit; the pumping unit comprises a pumping motor 11, a power switch 12, a three-phase plug 13 and a pump body 14, the pumping motor 11 is electrically connected to the power switch 12 and the three-phase plug 13 through a cable, after the three-phase plug 13 is inserted into a three-phase socket, turning on the power switch 12 can energize the pumping motor 11 to run, turning off the power switch 12 can cut off the power to stop the pumping motor 11 from running, the driving shaft of the pumping motor 11 is connected to the pumping shaft 44 of the pump body 14, when the pumping motor 11 is running, the driving shaft of the pumping motor 11 rotates and drives the pumping shaft 44 of the pump body 14 to rotate, at this time the pump body 14 can realize the fluid from one end ( The first pumping pipe 2 is connected to the first pumping pipe 2 through a pipeline, and the other end of the first pumping pipe 2 is connected to the second pumping pipe 3. The first pumping pipe 2 includes an internal thread, and the second pumping pipe 3 includes an external thread. The external thread of the first pumping pipe 2 cooperates with the internal thread of the second pumping pipe 3, so that when the second pumping pipe 3 rotates relative to the first pumping pipe 2, the second pumping pipe 3 can extend from the first pumping pipe 2 into or retract into the first pumping pipe 2. The adjusting part includes a forward and reverse motor 41 and a telescopic rod 42. The forward and reverse motor 41 of this embodiment is fixed in the first pumping pipe 2 and adopts a sealed Design, as a feasible implementation method, the shell, cover, holes in the shell, sealing gaskets, sealing plugs and other structures can be used to expose only the shaft in the first oil pumping pipe 2 and directly contact the oil in the pipe. The forward and reverse motors 41 of this embodiment are powered by direct plugging, and the forward and reverse rotation of the forward and reverse motors 41 can be achieved by adjusting the wiring of the power supply cable of the forward and reverse motors 41. As an embodiment, this embodiment adopts a quick-pluggable cable connection method. The telescopic rod 42 is located in the first oil pumping pipe 2, and the multiple rod bodies that make up the telescopic rod 42 can only undergo axial relative movement. Specifically, as an optional implementation method, a slider and a slide groove that slide in the axial direction can be set between the multiple rod bodies that make up the telescopic rod 42, and one end of the telescopic rod 42 is connected to the positive The reversing motor 41 is connected in transmission, and the other end of the telescopic rod 42 is fixed to the inner wall of the second oil pumping pipe 3. The rotating shaft 44 of the telescopic rod 42 is colinear with the extension direction of the second oil pumping pipe 3, so that when the forward and reverse motor 41 rotates forward or reverse, the telescopic rod 42 will rotate forward or reverse in the extension direction of the second oil pumping pipe 3. Since the other end of the telescopic rod 42 is fixed to the second oil pumping pipe 3, the second oil pumping pipe 3 will also rotate forward or reverse with the telescopic rod 42, thereby causing the second oil pumping pipe 3 to retract into the first oil pumping pipe 2 or extend from the first oil pumping pipe 2 under the action of the cooperation between the internal thread and the external thread. It should be noted that in the initial state and after the oil injection operation is completed, the second oil injection pipe is generally retracted into the first oil pumping pipe 2 as much as possible.When the gear box in the factory needs to be filled with oil or the lubricating oil in the gear box needs to be replaced, the oil pump for filling the gear box with oil and the oil barrel filled with new lubricating oil (hereinafter referred to as the oil barrel) of this embodiment are first moved to the location of the corresponding gear box, and then the original lubricating oil in the gear box is first discharged, and then the pipeline connected to the output end of the pumping unit is extended into the gear box, and the second oil pumping pipe 3 and the first oil pumping pipe are extended into the oil barrel, and then the power supply of the forward and reverse motor 41 is plugged in, and the second oil pumping pipe 3 is adjusted to extend from the first oil pumping pipe 2 of length, so that the bottom of the second oil pumping pipe 3 is set close to the bottom of the oil barrel, and then the power supply of the forward and reverse motor 41 is disconnected; the three-phase plug 13 of the pumping motor 11 is inserted into the three-phase socket and the power switch 12 is turned on. At this time, the pumping unit is running to pump the lubricating oil in the oil barrel into the gear box. When the gear box is filled with sufficient lubricating oil, the power switch 12 is turned off, the three-phase plug 13 is unplugged, and the power supply of the forward and reverse motor 41 is plugged in, so that the second oil injection pipe is retracted into the first oil pumping pipe 2 as much as possible, and an oil injection operation is completed.

[0034] In order to make the operator more accurate in adjusting the length of the second pumping pipe 3 extending from the first pumping pipe 2, in a further embodiment, refer to Figure 2 The oil pump for injecting oil into the gear box also includes a measuring part 5 and a display screen 6. The measuring part 5 includes a distance sensor. The distance sensor is arranged close to the bottom end of the second oil pumping pipe 3 to ensure that the data measured by the distance sensor is as close as possible to the distance between the bottom of the second oil pumping pipe 3 and the bottom of the oil barrel. The distance sensor measures the distance between the current position and the bottom of the container loaded with lubricating oil and displays it through the display screen 6. Specifically, different methods can be used according to the type of distance sensor to display the test status of the distance sensor through the display screen 6. If the distance sensor outputs a digital signal, it can be directly read by a single-chip microcomputer and then displayed on the display screen 6. If the distance sensor outputs an analog signal, an analog / digital conversion circuit (A / D) is also required. By setting the measuring part 5 and the display screen 6, the distance between the bottom end of the second oil pumping pipe 3 and the bottom of the container loaded with lubricating oil is converted into visible data.

[0035] In order to make the operation process of adjusting the length of the second oil extraction pipe 3 extending from the first oil extraction pipe 2 more convenient and accurate for the operator, in a further embodiment, the oil extractor for injecting oil into the gearbox also includes a forward and reverse switch, which is electrically connected to the forward and reverse motor 41.

[0036] In order to prevent the second oil extraction pipe 3 from being damaged due to bottoming out caused by misoperation or the like, in a further embodiment, the oil extractor for injecting oil into the gear box further comprises a control unit, which is electrically connected to the forward and reverse motor 41, the measuring unit 5 and the display screen 6. When the distance between the distance measuring sensor and the bottom of the container loaded with lubricating oil reaches a preset distance, the control unit controls the forward and reverse motor 41 to stop running. In this embodiment, the preset distance is 2 mm. In other embodiments, the preset distance can be set according to the product. Figure 3 The shape of the second oil extraction pipe 3 is adjusted according to the extraction conditions of the product, the shape of the oil barrel, and the shape of the bottom of the second oil extraction pipe 3, so as to achieve the purpose of extracting the lubricating oil in the oil barrel as much as possible, or to achieve the purpose of preventing the second oil extraction pipe 3 from touching the bottom as much as possible.

[0037] In order to further ensure that the lubricating oil extracted by the oil extractor is clean, in a further embodiment, refer to Figure 3 The oil pump for injecting oil into the gear box further comprises a filter 7, which is sleeved on the bottom end of the second oil pumping pipe 3 and sealed. As a specific embodiment, the filter 7 can be a filter screen or a filter element. By setting the filter 7, the lubricating oil in the oil barrel is filtered.

[0038] In order to further ensure that the lubricating oil extracted by the oil extractor is clean, in a further embodiment, refer to Figure 4 The oil pump for oiling the gearbox also includes a dustproof part 8, which is sleeved on the first oil pumping pipe 2. The dustproof part 8 includes a dustproof plate 81 and four support legs 82 fixed on the dustproof plate 81. The dustproof plate 81 is provided with an oil pipe hole. The first oil pumping pipe 2 is provided through the oil pipe hole. The support legs 82 are provided around the outer periphery of the oil pipe hole. When in use, the support legs 82 are generally placed on the top of the oil barrel. By providing the dustproof part 8, after the first oil pumping pipe 2 and the second oil pumping pipe 3 are extended into the oil barrel, the cover is provided at the opening of the oil barrel to prevent external dust and debris from entering the oil barrel during the oil filling operation and keep the lubricating oil clean.

[0039] In order to increase the convenience of using the oil pump and facilitate the operation of the oil pump at gear boxes in different positions, in a further embodiment, the oil pump for injecting oil into the gear box also includes a battery, and the battery is electrically connected to the forward and reverse motor 41. By providing the battery, the wiring harness required for the oil pumping operation is reduced.

[0040] In order to make the oil filling process more labor-saving and convenient, in a further embodiment, please refer to Figure 5The oil pump for injecting oil into the gear box also includes a moving part, which includes a storage platform 91, a hand-pushing part 92 and four pulleys 93. The pumping part and the hand-pushing part 92 are fixed on the storage platform 91, and the four pulleys 93 are arranged under the storage platform 91. When in use, the moving part can be pushed by pushing the hand-pushing part 92. By setting the moving part, the heavier pumping part can be moved, which is convenient for the pumping part to move between gear boxes in different positions.

[0041] In order to reduce the production cost of the oil pump, in a further embodiment, refer to Figure 6 and Figure 7 The adjustment part of the oil pump for oiling the gearbox also includes a coupling 43, a rotating shaft 44, a first bevel gear 45 and a second bevel gear 46. The forward and reverse motor 41, the coupling 43 and one end of the rotating shaft 44 are located outside the first oil pumping pipe 2, and the other end of the rotating shaft 44, the first bevel gear 45 and the second bevel gear 46 are located inside the first oil pumping pipe 2. The driving shaft of the forward and reverse motor 41 is fixed to one end of the rotating shaft 44 through the coupling 43, and the other end of the rotating shaft 44 is fixed to the first bevel gear 45. The second bevel gear is fixed to one end of the telescopic rod 42, and the first bevel gear 45 is meshed with the second bevel gear 46. The forward and reverse motor 41 is arranged outside the first oil pumping pipe 2 to avoid the sealing design of the motor.

[0042] In order to reduce the use cost of the oil pump, in a further embodiment, the adjustment part of the oil pump for injecting oil into the gear box further includes an axial bearing, which is located in the first oil pumping pipe 2, and is sleeved on the telescopic rod, and the two sides of the axial bearing are respectively in contact with the lower end of the second bevel gear 46 and the first oil pumping pipe 2. By providing the axial bearing, the loss of the second bevel gear 46 during rotation is reduced.

[0043] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and the utility model is also intended to include these modifications and modifications.

Claims

1. An oil pump for injecting oil into a gear box, characterized in that: The oil pumping unit comprises a pumping unit, a first oil pumping pipe, a second oil pumping pipe and an adjusting unit; the output end of the pumping unit is connected to the oil filling port of the gear box, the input end of the pumping unit is connected to one end of the first oil pumping pipe, the other end of the first oil pumping pipe is connected to the second oil pumping pipe, the first oil pumping pipe comprises an internal thread, the second oil pumping pipe comprises an external thread, the external thread cooperates with the internal thread, the adjusting unit comprises a forward and reverse motor and a telescopic rod, the telescopic rod is located in the first oil pumping pipe, one end of the telescopic rod is transmission-connected to the forward and reverse motor, the other end of the telescopic rod is fixed to the inner wall of the second oil pumping pipe, and the rotating shaft of the telescopic rod is colinear with the direction in which the second oil pumping pipe extends.

2. An oil pump for injecting oil into a gearbox according to claim 1, characterized in that: It also includes a measuring part and a display screen. The measuring part includes a distance sensor. The distance sensor is arranged close to the bottom end of the second oil suction pipe. The distance sensor measures the distance between the current position and the bottom of the container loaded with lubricating oil and displays it through the display screen.

3. An oil pump for injecting oil into a gearbox according to claim 1, characterized in that: It also includes a forward and reverse switch, which is electrically connected to the forward and reverse motor.

4. An oil pump for injecting oil into a gearbox according to claim 2, characterized in that: It also includes a control unit, which is electrically connected to the forward and reverse motor, the measuring part and the display screen. When the distance between the distance measuring sensor and the bottom of the container loaded with lubricating oil reaches a preset distance, the control unit controls the forward and reverse motor to stop running.

5. The oil pump for injecting oil into a gearbox according to claim 1, characterized in that: It also includes a filter part, which is sleeved on the bottom end of the second oil pumping pipe and is sealed and connected.

6. The oil pump for injecting oil into a gearbox according to claim 1, characterized in that: It also includes a dustproof part, which is sleeved on the first oil pumping pipe. The dustproof part includes a dustproof plate and a plurality of supporting legs fixed on the dustproof plate. The dustproof plate is provided with an oil pipe hole. The first oil pumping pipe is arranged to pass through the oil pipe hole. The supporting legs are arranged around the periphery of the oil pipe hole.

7. An oil pump for injecting oil into a gearbox according to claim 1, characterized in that: It also includes a battery, which is electrically connected to the forward and reverse motor.

8. An oil pump for injecting oil into a gearbox according to claim 1, characterized in that: It also includes a moving part, the pumping part is fixed on the moving part, and the moving part includes a plurality of pulleys.

9. An oil pump for injecting oil into a gearbox according to claim 1, characterized in that: The adjusting part also includes a coupling, a rotating shaft, a first bevel gear and a second bevel gear. The forward and reverse motor, the coupling and one end of the rotating shaft are located outside the first oil pumping pipe, and the other end of the rotating shaft, the first bevel gear and the second bevel gear are located inside the first oil pumping pipe. The driving shaft of the forward and reverse motor is fixed to one end of the rotating shaft through the coupling, the other end of the rotating shaft is fixed to the first bevel gear, the second bevel gear is fixed to one end of the telescopic rod, and the first bevel gear is meshed with the second bevel gear.

10. An oil pump for injecting oil into a gearbox according to claim 9, characterized in that: The adjusting part further comprises an axial bearing, which is located in the first oil pumping pipe and sleeved on the telescopic rod. Both sides of the axial bearing are respectively in contact with the lower end of the second bevel gear and the first oil pumping pipe.

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