Hydraulic casting turning groove anti-rust treatment device

Abstract

A rust-preventing device for machining grooves in hydraulic castings includes an oiling tank for fixing the workpiece, an oiling unit located on the side wall of the oiling tank and movable towards the center, and a drive mechanism for rotating the workpiece. The oiling unit includes an oiling head with symmetrical arc-shaped protrusions at its end, forming an arc-shaped groove between the two protrusions, with a rust-preventive oil outlet in the center of the groove. During operation, the oiling head elastically presses into the machining groove, and the workpiece rotates, causing the rust-preventive oil to be evenly rolled and formed into a film on the groove wall. This invention effectively overcomes the problems of oil flow and uneven distribution caused by gravity in traditional oiling methods by combining a structured oiling head with rotary pressurization, significantly improving the uniformity and durability of rust prevention on the inner wall of the machining groove, and is particularly suitable for temporary protection of hydraulic castings during storage.

Description

Technical Field

[0001] This utility model belongs to the field of rust prevention technology, specifically referring to a rust prevention treatment device for machining grooves in hydraulic castings. Background Technology

[0002] As critical components in hydraulic systems, the sealing and reliability of circular hydraulic castings are paramount. These castings typically require machining to create annular grooves (such as sealing grooves or mounting grooves) to meet assembly and sealing requirements. However, during storage or transportation after machining and before assembly, these grooves are exposed to air for extended periods, especially in hot and humid environments like summer, making their inner surfaces highly susceptible to corrosion. Once corrosion forms, it not only affects the appearance but can also compromise the dimensional accuracy and surface integrity of the groove, leading to serious consequences such as seal failure and hydraulic leakage.

[0003] Currently, the industry commonly uses direct spraying or brushing of rust-preventive oil for temporary rust protection of such turning grooves. While this method is simple to operate, it has significant drawbacks: the rust-preventive oil only adheres to the surface of the groove. During long-term static storage, it gradually flows downwards under gravity and accumulates at the bottom of the groove, causing the oil film on the upper part and side walls of the groove to thin or even disappear completely, thus losing effective protection. This area therefore becomes a weak point for rust formation, and the risk of rust is further exacerbated in humid and hot environments. Utility Model Content

[0004] In view of the above situation and to overcome the defects of the prior art, this utility model provides a rust prevention treatment device for the turning groove of hydraulic castings, which at least partially solves the above problems.

[0005] The technical solution adopted by this utility model is as follows: This utility model proposes a rust prevention treatment device for machining grooves in hydraulic castings, comprising: An oiling tank is used to fix workpieces in place. An oiling unit is installed through the side wall of the oiling tank and can move towards the center of the oiling tank. The oiling unit includes an oiling pressure head. The oiling head is arranged to press against the turning groove. The pressing end of the oiling head is arranged with symmetrical arc-shaped protrusions along the axial direction of the turning groove. An inwardly recessed arc-shaped groove is formed between the arc-shaped protrusions on both sides. The oiling head is provided with a channel for the flow of rust-preventive oil. The channel passes through the middle of the arc-shaped groove. The drive mechanism is used to drive the workpiece to rotate relative to the oiling head.

[0006] Furthermore, the oiling tank is connected to an oil inlet pipe, which is connected to the oiling unit to supply rust-preventive oil.

[0007] Furthermore, a recovery tank is connected below the oiling tank, the recovery tank is equipped with a filter screen, and a return oil pipe is connected to the recovery tank. The return oil pipe is connected to the inlet oil pipe through a pumping mechanism.

[0008] Furthermore, the oiling unit also includes a pressure rod and a spring, with the spring sleeved on the pressure rod to elastically press the oiling head into the turning groove of the workpiece.

[0009] Furthermore, the oiling head is detachably mounted on the pressure bar to accommodate different workpieces with different machined groove sizes.

[0010] Furthermore, the bottom wall of the oiling tank is provided with an annular groove, and the two sides of the annular groove are chamfered to form a slope that facilitates the return of oil.

[0011] Furthermore, the bottom wall of the annular groove is provided with a plurality of through holes penetrating the oiling tank.

[0012] Furthermore, the drive mechanism includes a protective box, a motor, and a fixing rod. The protective box is located below the oiling box, the motor is located inside the protective box, and the fixing rod is connected to the output end of the motor and works in conjunction with a nut to fix the workpiece, so as to adjust the height of the turning groove to match the oiling pressure head.

[0013] The beneficial effects achieved by this utility model are as follows: Through the frictional pressurization process of the oiling head, the rust-preventive oil is fully penetrated and evenly adhered to the circumferential surface of the turning groove, forming a stable and dense oil film; this method effectively overcomes the problems of oil flowing down and lack of oil at the top caused by gravity in traditional oiling methods, and significantly improves the uniformity and durability of rust prevention; in particular, it can provide long-term comprehensive protection for the tank in high temperature and high humidity environments, the process is simple and easy to implement, the cost is controllable, and it greatly reduces the risk of rust on round hydraulic castings during storage, ensuring the reliability of subsequent assembly and use. Attached Figure Description

[0014] Figure 1 This is a cross-sectional view of the rust prevention treatment device for the machining grooves of hydraulic castings according to an embodiment of this utility model; Figure 2 This is a cross-sectional view of the coating tank; Figure 3 A sectional view showing the positional relationship between the oiling head and the workpiece during operation; Figure 4 This is a cross-sectional view of the oiling unit.

[0015] Among them, 1. oiling tank, 2. recovery tank, 3. filter screen, 4. protective box, 5. motor, 6. oiling unit, 7. oil inlet pipe, 8. oil return pipe, 9. fixing rod, 10. nut, 11. annular groove, 12. leakage hole, 13. pressure rod, 14. spring, 15. oiling pressure head, 16. channel, 17. arc-shaped protrusion, 18. arc-shaped groove, 19. workpiece.

[0016] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0018] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 limitations on this utility model.

[0019] Please see Figure 1 This diagram illustrates the overall cross-sectional structure of one embodiment of the present invention. The rust-preventing treatment device for the turning groove of a hydraulic casting mainly consists of an upper oiling tank 1 and a lower protective tank 4. The oiling tank 1 is used to hold the workpiece 19 and collect the rust-preventing oil dripping during the operation. A drive motor 5 is installed inside the protective tank 4, with its output axis passing upwards through the bottom wall of the oiling tank 1. A fixing rod 9 is connected to the output end of the motor 5. The circular hydraulic casting to be treated, serving as the workpiece 19, has its center hole fitted onto the fixing rod 9 and is locked from above by a nut 10. By assembling and disassembling different fixing rods 9, the installation height of the workpiece 19 can be finely adjusted.

[0020] An oiling unit 6 is horizontally installed along one side wall of the oiling tank 1. This unit can be advanced or retracted towards the center of the oiling tank 1. The front end of the oiling unit 6 is the key component for performing the oiling operation, the oiling pressure head 15.

[0021] Combination Figure 3 and Figure 4The detailed structure of the oiling unit 6 is shown below. The oiling unit 6 mainly includes a pressure rod 13, a spring 14 sleeved on the pressure rod 13, and an oiling head 15 installed at the end of the pressure rod 13. The oiling head 15 is detachably fixed to the pressure rod 13 via a threaded connection, facilitating the replacement of different specifications of the oiling head 15 according to the actual dimensions of the machining groove on the workpiece 19, ensuring a tight seal between the upper and lower sidewalls of the oiling head 15 and the upper and lower sidewalls of the machining groove. The working end of the oiling head 15 is precisely designed: it has two arc-shaped protrusions 17 symmetrically distributed along the axial direction of the workpiece 19, forming an inwardly recessed arc-shaped groove 18 between the two protrusions. An axial channel 16 is machined inside the oiling head 15; one end of the channel 16 is connected to the oil inlet pipe 7 via a pipeline, and the outlet at the other end is precisely located in the central area of ​​the arc-shaped groove 18.

[0022] During operation, the operator pushes the oiling unit 6 toward the workpiece 19 fixed at the center of the oiling tank 1. The arc-shaped protrusion 17 of the oiling head 15 presses against the circumferential surface of the turning groove, and the arc-shaped groove 18 is embedded into the groove, forming a relatively closed oiling working space together with the arc-shaped protrusion 17. The rust-preventive oil is sprayed out from the outlet 16, and in this closed space, it makes full contact with all sides of the turning groove. Under the sliding friction generated by the rotation of the arc-shaped protrusion 17 relative to the workpiece 19, it is rolled into a tightly adhered, uniform and dense oil film, thereby significantly improving the rust prevention effect.

[0023] During this process, the oiling head 15 is continuously and stably pressed into the turning groove under the elastic action of the spring 14. This elastic pressing mechanism can effectively compensate for the roundness deviation of the hydraulic casting due to the machining process, enabling the oiling head 15 to adapt to the roundness runout of the workpiece 19, ensuring the stability and uniformity of the oiling operation.

[0024] Under external pump pressure, the rust-preventive oil is continuously delivered through the oil inlet pipe 7 to the orifice 16 of the oiling head 15 and sprayed out from the outlet in the middle of the arc-shaped groove 18. At this time, the motor 5 is started, and the motor 5 drives the workpiece 19 to rotate uniformly around its axis through the fixing rod 9. Since the oiling head 15 is elastically fixed and its arc-shaped working surface is in close contact with the rotating groove wall, the seeping rust-preventive oil is evenly coated and pressed into the entire inner surface of the turning groove under the combined action of friction and pressure, forming a dense and continuous oil film, thereby effectively avoiding the problem of insufficient protection on the upper side of the groove wall caused by the local accumulation of oil at the bottom of the groove due to gravity.

[0025] During the coating process, a small amount of excess rust-preventive oil that is not completely absorbed by the tank wall will be squeezed out from both sides of the contact area between the coating head 15 and the tank wall, dripping into the coating tank 1. Please refer to [link / reference]. Figure 2The bottom wall of the oiling tank 1 is designed with an annular groove 11. The two sides of the annular groove 11 are chamfered to form a smooth slope, guiding the dripping oil to flow naturally to the bottom of the groove. On the bottom wall of the annular groove 11, there are multiple drainage holes 12 evenly distributed. The oil collected here flows through these drainage holes 12 into the recovery tank 2, which is installed directly below the oiling tank 1.

[0026] The recycling bin 2 is equipped with a filter screen 3 to filter out any metal particles or other impurities that may be mixed into the oil. The filtered and purified clean rust-preventive oil accumulates at the bottom of the recycling bin 2. The recycling bin 2 is connected to an oil pump (not shown in the figure) via an oil return pipe 8. This oil pump pumps the recycled oil back into the oil inlet pipe 7, thus forming a closed oil circulation system. This allows for the reuse of the rust-preventive oil, saving material costs and embodying an environmentally friendly design concept. It also avoids scratches caused by unclean rust-preventive oil sliding and rubbing against the curved protrusion 17.

[0027] This utility model device integrates elastic pressure coating, workpiece rotation, oil circulation and recovery, and modular pressure head design, providing a high-efficiency, uniform, reliable and economical solution for rust prevention treatment of hydraulic casting turning grooves.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A rust prevention treatment device for machining grooves in hydraulic castings, characterized in that, include: Oiling box (1), used to fix the workpiece; The oiling unit (6) is installed through the side wall of the oiling tank (1) and can move towards the center of the oiling tank (1). The oiling unit (6) includes an oiling pressure head (15). The oiling head (15) is arranged to press against the turning groove. The pressing end of the oiling head (15) is arranged with symmetrical arc-shaped protrusions (17) along the axial direction of the turning groove. An inwardly recessed arc-shaped groove (18) is formed between the two arc-shaped protrusions (17). The oiling head (15) is provided with a channel (16) for the flow of rust-preventive oil. The channel (16) passes through the middle of the arc-shaped groove (18). The drive mechanism is used to drive the workpiece to rotate relative to the oiling head (15).

2. The rust prevention treatment device for machining grooves in hydraulic castings according to claim 1, characterized in that: The oiling tank (1) is connected to an oil inlet pipe (7), which is connected to the oiling unit (6) to supply rust-preventive oil.

3. The rust prevention treatment device for machining grooves in hydraulic castings according to claim 2, characterized in that: The oiling tank (1) is connected to a recovery tank (2) below. The recovery tank (2) is equipped with a filter screen (3). The recovery tank (2) is connected to an oil return pipe (8). The oil return pipe (8) is connected to the oil inlet pipe (7) through a pumping mechanism.

4. The rust prevention treatment device for machining grooves in hydraulic castings according to claim 1, characterized in that: The oiling unit (6) also includes a pressure rod (13) and a spring (14). The spring (14) is sleeved on the pressure rod (13) to make the oiling head (15) elastically press against the turning groove of the workpiece (19).

5. The rust prevention treatment device for machining grooves in hydraulic castings according to claim 4, characterized in that: The oiling head (15) is detachably mounted on the pressure bar (13) to accommodate different workpieces with different groove sizes.

6. The rust prevention treatment device for machining grooves in hydraulic castings according to claim 1, characterized in that: The bottom wall of the oiling tank (1) is provided with an annular groove (11), and the two sides of the annular groove (11) are chamfered to form a slope that facilitates the return of oil.

7. The rust prevention treatment device for machining grooves in hydraulic castings according to claim 6, characterized in that: The bottom wall of the annular groove (11) is provided with a plurality of leak holes (12) that penetrate the oiling box (1).

8. The rust prevention treatment device for machining grooves in hydraulic castings according to claim 1, characterized in that: The drive mechanism includes a protective box (4), a motor (5) and a fixing rod (9). The protective box (4) is located below the oiling box (1). The motor (5) is located inside the protective box (4). The fixing rod (9) is connected to the output end of the motor (5) and works with a nut (10) to fix the workpiece so as to adjust the height of the turning groove to match the oiling head (15).

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