Spring oiling device

Abstract

The utility model relates to a spring oiling device, including frame body, drive piece, sleeve and automatic oil injection subassembly, drive piece is provided on the frame body, sleeve has mounting cavity, mounting cavity has opening, mounting cavity is used for placing the spring, automatic oil injection subassembly includes the nozzle, the opening faces the nozzle, and the automatic oil injection subassembly is connected with the nozzle. And the spray head or the sleeve is connected with the driving piece. According to the spring oiling device, in the oiling process, the situation that grease overflows and pollutes the environment can be avoided, the grease can be conveniently recycled, meanwhile, the quality of the recycled grease is guaranteed, the grease loss in the spring oiling process is reduced, and the spring oiling cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of spring oiling, in particular to a spring oiling device. Background Art

[0002] A flocked spring is installed inside a mechanical strut. To prevent the flocked spring from interfering with the inner ring of the strut during compression and extension, and producing unusual noise, the flocked spring needs to be oiled. The spring spraying device in the related art first places the spring in a sealed box and then sprays the spring surface. Due to the structural characteristics of the spring itself, some of the oil is not sprayed onto the spring during spraying, but instead onto other components in the box. This is not only not conducive to oil recovery, but also easily contaminates the oil, resulting in oil waste. Utility Model Content

[0003] The present invention aims to at least partially address one of the technical problems in the related art. To this end, embodiments of the present invention provide a spring lubricating device that prevents grease from spilling and contaminating the environment during the lubrication process, facilitates grease recovery, ensures the quality of the recovered grease, reduces grease loss during the spring lubrication process, and reduces the cost of spring lubrication.

[0004] The spring oiling device of an embodiment of the present utility model includes a frame, a driving member, a sleeve and an automatic oil spraying assembly, wherein the driving member is arranged on the frame, the sleeve has an installation cavity, the installation cavity has an opening, the automatic oil spraying assembly includes a nozzle, the nozzle or the sleeve is connected to the driving member, and the opening faces the nozzle.

[0005] The sleeve of the spring oiling device of the embodiment of the present invention has an installation cavity, which accommodates the spring, so that the spring oiling process can be completed in the installation cavity. Therefore, in the process of the nozzle spraying grease, the grease that is not attached to the spring is blocked by the wall of the installation cavity, which can prevent the grease from spraying to the outside of the sleeve, and the grease can naturally settle at the bottom of the installation cavity under the action of its gravity, which not only facilitates the recovery of the grease, but also prevents the grease from contacting and being contaminated with the lubricating oil on the driving part, thereby ensuring the recovery quality of the grease, reducing the waste of grease, and ensuring a clean working environment for the spring oiling device.

[0006] In some embodiments, the spring oiling device further includes a base, the sleeve is movably connected to the base, and the base or the nozzle is connected to the driving member.

[0007] In some embodiments, a positioning groove is provided on the base, and the sleeve is installed in the positioning groove.

[0008] In some embodiments, the nozzle corresponds to the central axis of the installation cavity in the depth direction of the installation cavity.

[0009] In some embodiments, the nozzle is provided with a grease chamber and a plurality of ejection holes, the grease chamber is communicated with the ejection holes, and the plurality of ejection holes are arranged at intervals along the circumference of the nozzle.

[0010] In some embodiments, at least a portion of the plurality of spray holes are first spray holes, and an extension direction of the first spray holes is perpendicular to a depth direction of the installation cavity.

[0011] In some embodiments, at least a portion of the plurality of spray holes are second spray holes, and an angle between an extension direction of the second spray holes and a depth direction of the installation cavity is an acute angle or an obtuse angle.

[0012] In some embodiments, the nozzle includes a small diameter section, an expanded diameter section and a large diameter section connected in sequence, the small diameter section is located on the side of the expanded diameter section away from the sleeve in the depth direction of the installation cavity, and the second nozzle hole is provided on the expanded diameter section.

[0013] In some embodiments, the frame has a first end and a second end opposite to each other in the depth direction of the mounting cavity, the driving member is connected to the nozzle, the sleeve is arranged at the first end of the frame, and the driving member is arranged at the second end of the frame.

[0014] In some embodiments, the driving member is a telescopic member, which has a fixed end and a movable end, the fixed end is arranged on the frame, and the nozzle or the sleeve is connected to the movable end; and / or, the automatic oil injection assembly includes an injection pump and a hose, the injection pump is connected to the nozzle through the hose, and the injection pump is separated from the driving member. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural diagram of a spring oiling device according to an embodiment of the present utility model;

[0016] Figure 2 This is a schematic structural diagram of a nozzle according to an embodiment of the present invention;

[0017] Figure 3 is a schematic diagram of a mechanical strut.

[0018] Reference numerals:

[0019] Spring oiling device 100;

[0020] Frame 1;

[0021] Driving element 2, oil cylinder 21, hydraulic oil pump 22;

[0022] Sleeve 3, mounting cavity 30;

[0023] Automatic oil injection assembly 4, nozzle 41, grease chamber 411, first spray hole 412, second spray hole 413, small diameter section 414, expanded diameter section 415, large diameter section 416, oil injection pump 42, hose 43;

[0024] Base 5;

[0025] Spring 200. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0027] Please refer to the attached Figures 1 to 2 , describing the spring oiling device 100 according to an embodiment of the present invention.

[0028] like Figures 1 to 2 As shown, the spring oiling device 100 of the present invention embodiment includes a frame 1, a driving member 2, a sleeve 3 and an automatic oil spraying assembly 4. The driving member 2 is arranged on the frame 1, the sleeve 3 has a mounting cavity 30, and the mounting cavity 30 has an opening. The mounting cavity 30 is used to place the spring 200. The automatic oil spraying assembly 4 includes a nozzle 41, the opening of which faces the nozzle 41. The nozzle 41 and the mounting cavity 30 are in the depth direction of the mounting cavity 30 (for example, Figure 1 The nozzle 41 or the sleeve 3 is connected to the driving member 2 (in the upper and lower directions).

[0029] Taking the connection between the driving member 2 and the nozzle 41 as an example, the use process of the spring oiling device 100 of the embodiment of the present invention is described in detail. When the spring oiling device 100 of the embodiment of the present invention is not in use, the nozzle 41 and the installation cavity 30 are spaced apart in the depth direction of the installation cavity 30. When the spring oiling device 100 is in use, refer to Figure 1, the depth direction of the installation cavity 30 is the same as the up-down direction, and the opening of the installation cavity 30 faces upward. When the spring oiling device 100 performs the oiling operation on the flocked spring, the oil spraying speed and oil spraying amount of the automatic oil spraying assembly 4 are preset, and the flocked spring is completely placed in the installation cavity 30. The axial direction of the flocked spring is parallel to the up-down direction, and then the driving part 2 drives the nozzle 41 to move at a uniform speed in the up-down direction, and gradually reduces the distance between the nozzle 41 and the installation cavity 30. When the nozzle 41 reaches the installation cavity 30 and is adjacent to the top of the flocked spring, the automatic oil spraying assembly 4 is turned on, and the grease is sprayed at a uniform speed toward the flocked spring. As the nozzle 41 continues to move, the nozzle 41 gradually moves toward the bottom of the flocked spring along the axial direction of the flocked spring. When the nozzle 41 reaches the bottom of the flocking spring, the driving member 2 drives the nozzle 41 to move at a uniform speed in the opposite direction, and the nozzle 41 gradually moves toward the top of the flocking spring along the axial direction of the flocking spring. During the reciprocating movement of the nozzle 41 relative to the flocking spring, the grease is evenly and quantitatively sprayed on the flocking spring along the axial direction of the flocking spring. When the nozzle 41 is separated from the flocking spring 200 in the vertical direction, the automatic nozzle 41 assembly is turned off, and then the driving member 2 drives the nozzle 41 to reset, and the oiling process ends. Alternatively, the oiling speed of the automatic oil spraying assembly 4 is increased. When the nozzle 41 reaches the bottom of the flocking spring 200 from the top of the flocking spring, the automatic nozzle 41 assembly is turned off, and then the driving member 2 drives the nozzle 41 to reset, and the oiling process ends.

[0030] When the driving member 2 is connected to the sleeve 3, when the spring oiling device 100 of the embodiment of the utility model is in use, the driving member 2 drives the sleeve 3 to move relative to the nozzle 41. When the nozzle 41 reaches the installation cavity 30 and is adjacent to the top of the flocked spring, the automatic oil spraying assembly 4 is turned on. When the nozzle 41 reaches the bottom of the flocked spring, the driving member 2 drives the sleeve 3 to move in the opposite direction.

[0031] The automatic oil spraying assembly 4 of the spring oiling device 100 of the embodiment of the present invention can control the nozzle 41 to spray oil at a uniform speed and the amount of oil sprayed, and the nozzle 41 can move at a uniform speed relative to the flocked spring 200 to achieve quantitative and uniform application of oil to the flocked spring 200.

[0032] After the flocking spring 200 is lubricated and installed in the mechanical strut, the strut can be extended and retracted 5-10 times. This allows the grease to spread evenly throughout the flocking spring 200 and onto the inner wall of the strut's sleeve. This lubrication prevents interference between the flocking spring 200 and the strut's inner collar, which can cause unusual noise.

[0033] It should be noted that the spring oiling device 100 of the embodiment of the present invention is not limited to flocked springs, but may also be used for other types of springs 200, such as coil springs and torsion springs.

[0034] The sleeve 3 of the spring oiling device 100 of the embodiment of the present invention has an installation cavity 30, which accommodates the spring 200, so that the oiling process of the spring 200 can be completed in the installation cavity 30. Therefore, in the process of spraying grease by the nozzle 41, the grease that is not attached to the spring 200 is blocked by the wall of the installation cavity 30, which can prevent the grease from spraying to the outside of the sleeve 3, and the grease can naturally settle at the bottom of the installation cavity 30 under the action of its gravity, which not only facilitates the recovery of the grease, but also prevents the grease from contacting and being contaminated with the lubricating oil on the driving part 2, thereby ensuring the recovery quality of the grease, reducing the waste of grease, and ensuring the cleanliness of the working environment of the spring oiling device 100.

[0035] Therefore, the oiling process of the spring oiling device 100 of the embodiment of the utility model can avoid oil overflow and pollution of the environment, and facilitate the recovery of oil, while ensuring the quality of the recovered oil, reducing the loss of oil during the oiling process of the spring 200, and reducing the cost of oiling the spring 200.

[0036] In some embodiments, as Figure 1 As shown, the nozzle 41 is aligned with the central axis of the mounting cavity 30 in the depth direction, and the spring 200 located within the mounting cavity 31 is coaxial with the mounting cavity 31. Therefore, the vertical projection of the nozzle 41 at the bottom of the mounting cavity 30 is located inside the spring 200. During the oiling process, the nozzle 41 moves up and down inside the spring 200, spraying grease onto the inner, upper, and lower sides of the coiled section of the spring 200. It should be noted that due to the creeping nature of grease, during the initial 5-10 expansions and contractions of the spring 200 after oiling, some of the grease on the upper and lower sides of the coiled section of the spring 200 can flow to the outer sides of the coiled section, ensuring that the spring 200 is still fully greased.

[0037] The nozzle 41 sprays grease onto the spring 200 on the inner side of the spring 200. Compared with the method of simultaneously oiling the spring on both the inner and outer sides in the related art, the structure of the nozzle 41 is simplified, so that the structure of the automatic oil spraying assembly 4 is simple, and at the same time, the space required for the installation cavity 30 to accommodate the nozzle 41 is reduced, the volume of the sleeve 3 is reduced, and the cost of the spring oiling device 100 of the embodiment of the utility model is reduced.

[0038] In some embodiments, the driver 2 is connected to the spray head 41. During the oiling process, the driver 2 drives the spray head 41 to move. Compared to the connection between the sleeve 3 containing the spring 200 and the driver 2, the spray head 41 is small in size and convenient for installation on the driver 2, which helps save the driving energy consumption of the driver 2 and further reduces the cost of oiling the spring 200 by the spring oiling device 100. Furthermore, during the oiling process, the driver 2 does not drive the sleeve 3 and the spring 200 to move, which can prevent the spring 200 from changing position due to movement and vibration, and helps ensure the position and positional accuracy of the spring 200 within the installation cavity 30. This helps ensure the relative positional accuracy of the spray head 41 and the spring 200 during the spraying process, thereby ensuring the spraying effect of the spray head 41 on the spring 200.

[0039] In some embodiments, the frame 1 has a first end (lower end) and a second end (upper end) relative to each other in the depth direction of the mounting cavity 30. The driving member 2 is connected to the spray head 41. The sleeve 3 is disposed at the first end of the frame 1, and the driving member 2 is disposed at the second end of the frame 1. Because the driving member 2 drives the spray head 41 to move, the driving member 2 and the sleeve 3 are located at opposite ends of the frame 1, which can reduce the space cramped at the lower end of the frame 1 for the spring lubricating device 100, thereby improving the rationality of the structural layout of the spring lubricating device 100 in the embodiment of the present invention.

[0040] In some embodiments, the driving member 2 is a telescopic member having a fixed end and a movable end. The fixed end is disposed on the frame 1, specifically, the fixed end is disposed on the second end of the frame 1, and the movable end is provided with a spray head 41. The simple structure of the telescopic member helps reduce the cost of the spring oiling device 100 of the present invention.

[0041] Specifically, the telescopic member includes a cylinder 21 and a hydraulic oil pump 22. The fixed end of the cylinder 21 forms the fixed end of the telescopic member, and the telescopic end of the cylinder 21 forms the movable end of the telescopic member. The hydraulic oil pump 22 is connected to the cylinder 21, and the hydraulic oil pump 22 controls the telescopic movement of the cylinder 21.

[0042] The telescopic member of the embodiment of the present invention is not limited thereto. For example, in some other embodiments, the telescopic member is an electric telescopic rod.

[0043] In some embodiments, the automatic oil spray assembly 4 includes an oil pump 42 and a hose 43. The oil pump 42 is connected to the spray head 41 via the hose 43, and the oil pump is spaced apart from the movable end. When the movable end of the telescopic member moves, the oil pump does not move synchronously, thereby reducing the energy consumption of the telescopic member and further reducing the cost of lubricating the spring 200 by the spring oiling device 100.

[0044] In some embodiments, as Figure 2As shown, the nozzle 41 is provided with a grease chamber 411, a plurality of first spray holes 412, and a plurality of ejection holes. The grease chamber is connected to the ejection holes, and the plurality of ejection holes are arranged at intervals along the circumference of the nozzle 41. Grease in the grease chamber is ejected from the ejection holes toward the spring 200. The plurality of ejection holes are arranged at intervals along the circumference of the nozzle 41, so that the grease is evenly sprayed around the circumference of the spring 200.

[0045] At least a portion of the multiple spray holes is the first spray hole 412. The extension direction of the first spray hole 412 is perpendicular to the depth direction of the installation cavity 30. The first spray hole 412 is directed toward the inner side of the spring 200 at the same height as the nozzle 41. As the nozzle 41 moves relative to the spring 200, grease is sprayed from the first spray hole 412 toward the upper side, middle side and lower side of the inner side surface of the spiral segment of the spring 200. According to the fluidity of the grease, the grease located on the upper side of the spiral segment can flow downward to the outer side surface of the spiral segment, so that the grease is evenly sprayed on the spring 200.

[0046] At least a portion of the multiple spray holes are second spray holes 413, and the angle between the extension direction of the second spray hole 413 and the depth direction of the installation cavity 30 is an acute angle or an obtuse angle. Then, the second spray hole 413 is inclined relative to the axial direction of the spring 200, and the grease sprayed from the second spray hole 413 is sprayed upward and / or downward toward the spring 200, thereby increasing the amount of grease attached to the upper side and / or lower side of the spiral segment of the spring 200, increasing the distribution amount of grease on the outer side surface of the spiral segment, and ensuring the uniformity of the grease sprayed on the spring 200.

[0047] Specifically, the nozzle 41 includes a small diameter section 414, an expanded diameter section 415, and a large diameter section 416 connected in sequence. The small diameter section 414 is located on the side (upper side) of the expanded diameter section 415 away from the sleeve 3 in the depth direction of the installation cavity 30. The expanded diameter section 415 is provided with a second spray hole 413, and the large diameter section 416 is provided with a first spray hole 412. Figure 2 The small diameter section 414 is located on the upper side of the expanded diameter section 415, and the large diameter section 416 is located on the lower side of the expanded diameter section 415. The expanded diameter section 415 is inclined with respect to the axial direction of the spring 200, which not only facilitates the arrangement of the second spray hole 413, but also makes the outlet of the second spray hole 413 obliquely upward, and the grease sprayed from the second spray hole 413 is sprayed upward toward the spring 200, thereby increasing the amount of grease sprayed toward the lower side of the spiral section of the spring 200, especially the part of the lower side of the spiral section of the spring 200 located on the outer side surface, and according to the creep flow properties of the grease, the grease on the lower side of the spiral section can flow to the upper side of the adjacent spiral section below, thereby increasing the amount of grease on the upper and lower sides of the spiral section of the spring 200, and improving the uniformity of grease distribution after the spring 200 is initially stretched and contracted after being oiled.

[0048] In some embodiments, the spring oiling device 100 further includes a base 5, a nozzle 41 connected to the drive member 2, and a sleeve 3 movably connected to the base 5. The movably connected base 5 and sleeve 3, on the one hand, allows the sleeve 3 to be separated from the base 5 when the spring oiling device 100 is not performing an oiling operation, so that the installation and disassembly process of the sleeve 3 and the spring 200 is not restricted, thereby facilitating the installation and removal of the spring 200 in the sleeve 3, and improving the convenience of operation of the spring oiling device 100 of the embodiment of the present invention. On the other hand, the base 5 provides support and fixing for the sleeve 3, and can locate and fix the position of the sleeve 3 in the present oiling device 100, thereby ensuring the accuracy of the position of the sleeve 3 and the consistency of the movement path of the nozzle 41 relative to the sleeve 3, thereby ensuring the smoothness and safety of the oiling process of the present oiling device 100.

[0049] In some other embodiments, the base 5 is connected to the driving member 2 , and the driving member 2 drives the base 5 and the sleeve 3 to move relative to the nozzle 41 .

[0050] Furthermore, the base 5 is provided with a positioning groove (not shown in the figure), in which the sleeve 3 is installed. The mounting groove can locate the position of the sleeve 3, facilitate the installation of the sleeve 3 on the base 5, and ensure that the sleeve 3 and the nozzle 41 are relative in the depth direction of the mounting cavity 30.

[0051] In some embodiments, an oil collecting tray (not shown in the figure) or an oil collecting tank (not shown in the figure) is provided on the base 5. The oil collecting tray or the oil collecting tank can hold grease. When there is a lot of grease deposited in the installation cavity of the sleeve 3, the grease can be poured into the oil collecting tray or the oil collecting tank, which does not affect the normal use of the sleeve 3 and also facilitates the recovery of the grease.

[0052] For flocking springs of mechanical struts, such as Figure 3 As shown, in the process of disassembling the mechanical strut, the assembly relationship between the flocking spring and the sleeve in which the flocking spring is installed is retained, that is, the flocking spring is located in the sleeve, and then the sleeve is installed on the base 5 as the sleeve 3 of the oiling device 100, and then the grease is sprayed. In other words, the sleeve 3 of the oiling device 100 is the sleeve of the mechanical strut. Such operation can save the process of disassembling and assembling the flocking spring from the sleeve and sleeve 3 of the mechanical strut, improve the oiling efficiency of the flocking spring, further reduce the manufacturing cost of the mechanical strut, and can double-oil the flocking spring and the sleeve. The amount of oil can be precisely controlled to ensure the lubrication effect of the flocking spring and avoid interference of the flocking spring in the sleeve to produce abnormal noise.

[0053] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0054] 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 the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0055] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0056] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0057] In the present invention, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0058] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A spring oiling device, characterized in that: include: frame; A driving member, the driving member being arranged on the frame; a sleeve, the sleeve having a mounting cavity, the mounting cavity having an opening; and An automatic oil spraying assembly includes a spray head, the spray head or the sleeve is connected to the driving member, and the opening faces the spray head.

2. The spring oiling device according to claim 1, characterized in that: It further includes a base, the sleeve is movably connected to the base, and the base or the nozzle is connected to the driving member.

3. The spring oiling device according to claim 2, characterized in that: A positioning groove is provided on the base, and the sleeve is installed in the positioning groove.

4. The spring oiling device according to claim 1, characterized in that: The nozzle corresponds to the central axis of the installation cavity in the depth direction of the installation cavity.

5. The spring oiling device according to claim 1, characterized in that: The nozzle is provided with a grease chamber and a plurality of ejection holes. The grease chamber is communicated with the ejection holes. The plurality of ejection holes are arranged at intervals along the circumference of the nozzle.

6. The spring oiling device according to claim 5, characterized in that: At least a portion of the plurality of spray holes are first spray holes, and an extending direction of the first spray holes is perpendicular to a depth direction of the installation cavity.

7. The spring oiling device according to claim 5, characterized in that: At least a portion of the plurality of spray holes are second spray holes, and an angle between an extension direction of the second spray holes and a depth direction of the installation cavity is an acute angle or an obtuse angle.

8. The spring oiling device according to claim 7, characterized in that: The nozzle includes a small diameter section, an expanded diameter section and a large diameter section connected in sequence. The small diameter section is located on the side of the expanded diameter section away from the sleeve in the depth direction of the installation cavity. The expanded diameter section is provided with the second spray hole.

9. The spring oiling device according to claim 1, characterized in that: The frame has a first end and a second end opposite to each other in the depth direction of the installation cavity, the driving member is connected to the nozzle, the sleeve is arranged at the first end of the frame, and the driving member is arranged at the second end of the frame.

10. The spring oiling device according to claim 1, characterized in that: The driving member is a telescopic member having a fixed end and a movable end, the fixed end is arranged on the frame, and the nozzle or the sleeve is connected to the movable end; and / or, The automatic oil injection assembly includes an oil injection pump and a hose. The oil injection pump is connected to the spray head through the hose, and the oil injection pump is spaced apart from the driving member.

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