Cooling device for hydraulic oil cylinder

Abstract

The invention discloses a cooling device for a hydraulic oil cylinder, and relates to the field of hydraulic pressure, the cooling device comprises a treatment box, the inner side of the treatment box is fixedly connected with a horizontal partition plate, a cavity is formed between the lower part of the horizontal partition plate and the treatment box, the bottom of the treatment box is fixedly connected with a motor, and a motor rotor is fixedly connected with a rotating main shaft; a filtering assembly used for filtering oil in the treatment box is arranged on the outer side of the rotating main shaft, a rotating fulcrum shaft is rotationally connected to the treatment box and is in transmission connection with the rotating main shaft, a cleaning assembly is fixedly connected to the top of the rotating fulcrum shaft, and when the filtering assembly moves to the top of the treatment box, the cleaning assembly cleans the oil in the treatment box. And the cleaning assembly is used for cleaning impurities filtered out by the filtering assembly. In the moving process of the filtering assembly and the cleaning assembly, the filtering assembly can filter hydraulic oil, and the cleaning assembly can clean filtered impurities, so that the oil cleanliness of the hydraulic oil cylinder during working is ensured, and the condition of temperature rise caused by oil dirt is reduced.

Description

Technical Field

[0001] The invention relates to the field of hydraulics, and in particular to a cooling device for a hydraulic oil cylinder. Background Art

[0002] In modern industrial production, hydraulic cylinders, as core actuators, are widely used in engineering machinery, machine tool manufacturing, and other fields. As equipment operation intensity and duration increase, hydraulic system failures caused by oil contamination and heat accumulation are becoming increasingly prominent.

[0003] Existing hydraulic cylinder cooling devices generally have two drawbacks: First, traditional filtering structures often use a single filter screen design, which has limited interception effect on fine particulate impurities and lacks an automatic cleaning mechanism. This results in blocked oil flow when the filter screen is clogged, increasing system load and generating a large amount of heat. Second, most cooling components rely on only a single heat dissipation method, which is difficult to meet the heat dissipation requirements under long-term high-intensity operation, causing the hydraulic cylinder temperature to continue to rise, not only reducing equipment operating efficiency, but also accelerating the aging of seals, significantly shortening the equipment's service life. To this end, those skilled in the art have proposed a cooling device for hydraulic cylinders to address the problems raised in the above background. Summary of the Invention

[0004] The object of the present invention is to provide a cooling device for a hydraulic cylinder to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A cooling device for a hydraulic cylinder includes a processing box, a horizontal partition is fixedly connected to the inside of the processing box, a cavity is formed between the bottom of the horizontal partition and the processing box, a motor is fixedly connected to the bottom of the processing box, a rotating main shaft is fixedly connected to the motor rotor, a filter assembly for filtering the oil inside the processing box is provided on the outside of the rotating main shaft, a rotating support shaft is rotatably connected to the processing box, the rotating support shaft is transmission-connected to the rotating main shaft, a cleaning assembly is fixedly connected to the top of the rotating support shaft, and when the filter assembly moves to the top of the processing box, the cleaning assembly cleans impurities filtered out by the filter assembly.

[0007] As a further solution of the present invention: the bottom of the processing box is fixedly connected with a mounting foot, the top of the processing box is fixedly connected with an inspection pipe, and the top of the processing box is fixedly connected with a fence.

[0008] As a further solution of the present invention: an oil inlet pipe and an oil outlet pipe are fixedly connected to the bottom of the horizontal partition, the oil inlet pipe and the oil outlet pipe are located in the cavity, and both the oil inlet pipe and the oil outlet pipe are connected to the top of the horizontal partition.

[0009] As a further solution of the present invention: the cleaning component also includes an impurity collection unit, which includes a collection drawer slidably connected to the top side of the processing box, and a debris discharge hole is opened on the top of the processing box, which is connected to the interior of the collection drawer.

[0010] As a further solution of the present invention: the filter assembly includes an external thread arranged on the outside of the rotating main shaft, a sliding block is threadedly connected to the outside of the external thread, a filter ring is connected to the outside of the sliding block through a connecting rod, the filter ring is slidingly connected to the sliding oil collecting plate, the sliding oil collecting plate is slidingly connected to the side wall of the processing box, a filter screen is arranged on the top of the filter ring, and a positioning spring is fixedly connected between the sliding oil collecting plate and the filter ring. When the positioning spring is not subjected to external force, the top plane of the filter ring is flush with the contact position of the sliding oil collecting plate.

[0011] As a further solution of the present invention: two extrusion springs are sleeved on the outer side of the rotating main shaft, and the extrusion springs are fixedly connected to the top of the processing box and the upper surface of the horizontal partition respectively.

[0012] As a further solution of the present invention: a driving gear is fixedly connected to the outer side of the rotating main shaft, and a driven gear is fixedly connected to the outer side of the rotating support shaft, and the driving gear is meshed with the driven gear.

[0013] As a further solution of the present invention: the cleaning component includes a rotating scraper fixedly connected to the top of the rotating support shaft, and the rotating scraper cooperates with the filtering component when rotating.

[0014] As a further solution of the present invention: it also includes a cooling component, which includes rotating blades that are transmission-connected to the rotating main shaft, and heat dissipation holes are opened on the side walls of the processing box. When the rotating blades rotate, they drive air flow to cool down.

[0015] Compared with existing technologies, this invention offers the following advantages: It features a simple structure and is easy to use. By integrating a filter assembly with a cleaning assembly, it creates an automated oil purification system. The filter assembly, with its high-precision filter screen, effectively intercepts particulate matter in the hydraulic oil, while the cleaning assembly promptly removes impurities from the screen, fundamentally ensuring the purity of the hydraulic system's oil. This design effectively mitigates system overheating caused by oil contamination. Furthermore, the built-in cooling assembly further improves heat dissipation efficiency, ensuring that the hydraulic cylinder maintains a stable operating temperature even under prolonged, high-intensity operation, significantly extending the equipment's service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a cooling device for a hydraulic cylinder;

[0017] Figure 2 It is a partial cross-sectional structural schematic diagram of a cooling device for a hydraulic cylinder;

[0018] Figure 3 for Figure 2 A partial enlarged view of the middle part;

[0019] Figure 4 This is a partial structural diagram of a filter assembly in a cooling device for a hydraulic cylinder;

[0020] Figure 5 This is a partial structural schematic diagram of a filter component in a cooling device for a hydraulic cylinder from another perspective.

[0021] In the figure: 1. Processing box; 2. Horizontal partition; 3. Cavity; 4. Motor; 5. Rotating main shaft; 6. Filter assembly; 7. Rotating support shaft; 8. Cleaning assembly; 9. Mounting foot; 10. Inspection pipe; 11. Enclosure; 12. Oil inlet pipe; 13. Oil outlet pipe; 14. Impurity collection unit; 15. Collection drawer; 16. Discharge hole; 17. External thread; 18. Sliding block; 19. Connecting rod; 20. Filter ring; 21. Sliding oil collecting plate; 22. Filter screen; 23. Positioning spring; 24. Extrusion spring; 25. Driving gear; 26. Driven gear; 27. Rotating scraper; 28. Cooling assembly; 29. ​​Rotating blade; 30. Heat dissipation hole. DETAILED DESCRIPTION

[0022] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like 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, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0024] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0025] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0026] Example 1: Please refer to Figure 1 A cooling device for a hydraulic cylinder includes a processing box 1, a horizontal partition 2 is fixedly connected to the inside of the processing box 1, and a cavity 3 is formed between the bottom of the horizontal partition 2 and the processing box 1. A motor 4 is fixedly connected to the bottom of the processing box 1, and a rotating main shaft 5 is fixedly connected to the rotor of the motor 4. A filter component 6 for filtering the oil inside the processing box 1 is provided on the outside of the rotating main shaft 5. A rotating support shaft 7 is rotatably connected to the processing box 1, and the rotating support shaft 7 is transmission-connected to the rotating main shaft 5. A cleaning component 8 is fixedly connected to the top of the rotating support shaft 7. When the filtering component 6 moves to the top of the processing box 1, the cleaning component 8 cleans the impurities filtered out by the filtering component 6.

[0027] After the equipment is fixed, the hydraulic oil used in the hydraulic cylinder is introduced into the processing box 1, and the processing box 1 is used to treat the hydraulic oil, thereby improving the cleanliness of the hydraulic oil and preventing the temperature rise caused by the contamination of the hydraulic oil. The motor 4 is turned on, and the rotation of the motor 4 drives the rotation of the rotating main shaft 5. When the rotating main shaft 5 rotates, the filter assembly 6 is driven to move, thereby filtering the hydraulic oil. At the same time, the rotating main shaft 5 drives the rotation of the rotating support shaft 7, and the rotating support shaft 7 drives the cleaning assembly 8 to clean the impurities filtered by the filter assembly 6, thereby making the hydraulic oil cleaner.

[0028] The bottom of the treatment box 1 is fixedly connected to mounting feet 9 for mounting the treatment box 1. An access pipe 10 is fixedly connected to the top of the treatment box 1. This pipe can be used for maintenance and to drain dirty oil for direct replacement with clean oil. A barrier 11 is fixedly connected to the top of the treatment box 1 to effectively prevent oil leakage from the top of the treatment box 1 during cleaning, ensuring the overall cleanliness of the device's exterior surface.

[0029] See also Figure 2An oil inlet pipe 12 and an oil outlet pipe 13 are fixedly connected to the bottom of the horizontal partition 2. These pipes are located within the cavity 3 and communicate with the top of the horizontal partition 2. These pipes allow for the flow of oil in and out. These pipes can be directly connected to the hydraulic cylinder's oil return line for cleaning.

[0030] The cleaning assembly 8 also includes an impurity collecting unit 14 , which includes a collecting drawer 15 slidably connected to the top side of the processing box 1 . A debris discharge hole 16 is opened on the top of the processing box 1 , and the debris discharge hole 16 is connected to the inside of the collecting drawer 15 .

[0031] The cleaned oil stains continuously change their position at the top as the cleaning component 8 moves. When they move to the position of the drainage hole 16, they pass through the drainage hole 16 and enter the collection drawer 15. When the oil stains are fully collected, the collection drawer 15 can be pulled out and the oil stains therein can be poured out.

[0032] See also Figure 2 、 Figure 3 、 Figure 4 and Figure 5 The filter assembly 6 includes an external thread 17 arranged on the outside of the rotating main shaft 5, and a sliding block 18 is threadedly connected to the outside of the external thread 17. The outside of the sliding block 18 is connected to a filter ring 20 through a connecting rod 19. The filter ring 20 is slidably connected to a sliding oil collecting plate 21. The sliding oil collecting plate 21 is slidably connected to the side wall of the processing box 1. A filter screen 22 is provided on the top of the filter ring 20, and a positioning spring 23 is fixedly connected between the sliding oil collecting plate 21 and the filter ring 20. When the positioning spring 23 is not subjected to external force, the top plane of the filter ring 20 is flush with the contact position of the sliding oil collecting plate 21.

[0033] With the rotation of the rotating main shaft 5, the external thread 17 rotates, driving the sliding block 18 to move up and down, and the direction of the up and down movement of the sliding block 18 is controlled by the motor 4. When the motor 4 drives the sliding block 18 to move upwards, the oil will pass through the filter screen 22 at the top of the filter ring 20, so that the oil stains are filtered out. With the continuous rotation of the motor 4, the sliding oil collecting plate 21 will be in contact with the top of the inner wall of the processing box 1. At this time, the sliding block 18 continues to move upwards, and the sliding oil collecting plate 21 will not move. The filter ring 20 overcomes the spring force of the positioning spring 23 and continues to move upwards. After that, the sliding block 18 moves to the top of the external thread 17. At this time, the external thread 17 rotates, and the sliding block 18 no longer continues to move upwards. The cleaning assembly 8 will clean the oil stains filtered out on the surface of the filter screen 22. Then control the motor 4 to reverse, and the filter ring 20 moves downwards. When the positioning spring 23 is not extruded by external force, under the action of its own elastic force, the filter ring 20 slides relative to the sliding oil collecting plate 21, so that the filter ring 20 is flush with the sliding oil collecting plate 21. In this way, the filter ring 20 can filter more oil during the up and down movement.

[0034] The rotating main shaft 5 is externally sleeved with two extrusion springs 24, which are respectively fixedly connected with the top of the inner wall of the processing box 1 and the upper surface of the horizontal partition plate 2. The arrangement of the extrusion springs 24 ensures that the motor 4 is in contact with the external thread 17 during rotation, whether the sliding block 18 moves upwards or downwards, avoiding the disengagement of the sliding block 18 from the external thread 17, and the situation that the motor 4 cannot drive the filter assembly 6 to filter.

[0035] The rotating main shaft 5 is fixedly connected with a driving gear 25 on the outside, and the rotating shaft 7 is fixedly connected with a driven gear 26 on the outside. The driving gear 25 is engaged with the driven gear 26.

[0036] Example two: this embodiment specifically discloses an implementation manner of a cleaning assembly based on the previous embodiment. Please refer to Figure 2 The cleaning assembly 8 comprises a rotating scraper 27 fixedly connected to the top of the rotating shaft 7, which cooperates with the filter assembly 6 when rotating. The rotating shaft 7 drives the rotating scraper 27 to rotate, and the rotating scraper 27 scrapes off the oil stains on the surface of the filter screen 22. In order to further ensure the scraping effect, the rotating scraper 27 can be made of elastic rubber material, or a scraper made of rubber material is fixed on the contact surface, so as to improve the oil stain scraping effect.

[0037] Example three: this embodiment additionally discloses an implementation manner of auxiliary oil temperature cooling based on the above embodiments. Please refer to Figure 2The process box 1 further includes a cooling assembly 28, which includes rotating blades 29 in a transmission connection with the rotating spindle 5. Heat dissipation holes 30 are provided in the sidewalls of the process box 1. Rotating blades 29 drive airflow to cool the oil. The airflow driven by the rotating blades 29 accelerates the cooling of the oil. The rotating blades 29 can be directly fixed to the outside of the rotating spindle 5 or rotated vertically using bevel gears. Furthermore, spiral water cooling pipes can be installed around the oil inlet pipe 12 and the oil outlet pipe 13 to further enhance the cooling effect.

[0038] Working principle: After fixing the equipment, guide the hydraulic oil used by the hydraulic cylinder into the processing box 1, and use the processing box 1 to process the hydraulic oil to improve the cleanliness of the hydraulic oil, thereby avoiding the temperature increase caused by the contamination of the hydraulic oil. Turn on the motor 4, and the rotation of the motor 4 drives the rotating main shaft 5 to rotate. When the rotating main shaft 5 rotates, it drives the filter component 6 to move, thereby filtering the hydraulic oil. At the same time, the rotating main shaft 5 drives the rotating support shaft 7 to rotate, and the rotating support shaft 7 drives the cleaning component 8 to clean the impurities filtered out by the filter component 6, thereby making the hydraulic oil cleaner. The cleaned oil and dirt constantly change position at the top with the movement of the cleaning component 8. When it moves to the position of the drainage hole 16, it will pass through the drainage hole 16 and enter the collection drawer 15. When the oil and dirt are full, the collection drawer 15 can be pulled out and the oil and dirt inside can be poured out.

[0039] As the rotating spindle 5 rotates, the external thread 17 rotates, driving the sliding block 18 to move up and down. The direction of the up and down movement of the sliding block 18 is controlled by the motor 4. When the motor 4 drives the sliding block 18 to move upward, the oil will pass through the filter screen 22 on the top of the filter ring 20, so that the oil is filtered out. As the motor 4 continues to rotate, the sliding oil collecting plate 21 will contact the top of the inner wall of the processing box 1. At this time, the sliding block 18 continues to move upward and the sliding oil collecting plate 21 will not move. The filter ring 20 overcomes the spring force of the positioning spring 23 and continues to move upward. After that, the sliding block 18 moves to the top of the external thread 17. At this time, the external thread 17 rotates, the sliding block 18 no longer continues to move upward, and the cleaning component 8 will clean the oil filtered out from the surface of the filter screen 22. Afterwards, the motor 4 is controlled to reverse, and the filter ring 20 moves downward. When the positioning spring 23 is not squeezed by external force, the filter ring 20 and the sliding oil collecting plate 21 slide relative to each other under the action of its own elastic force, so that the filter ring 20 is flush with the sliding oil collecting plate 21. This allows the filter ring 20 to filter more oil during the up and down movement. The setting of the extrusion spring 24 ensures that the sliding block 18 will always be in contact with the external thread 17 during the rotation of the motor 4, regardless of whether it moves up or down, to avoid the situation where the sliding block 18 is out of contact with the external thread 17 and the motor 4 cannot drive the filter assembly 6 to filter. When the rotating support shaft 7 rotates, it drives the rotating scraper 27 to rotate. The rotating scraper 27 scrapes the oil on the surface of the filter screen 22. In order to further ensure the scraping effect, the rotating scraper 27 can be made of elastic rubber material, or a scraper made of rubber material can be fixed on the contact surface to improve the effect of scraping oil.

[0040] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0041] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A cooling device for a hydraulic cylinder, comprising a processing box (1), wherein a horizontal partition (2) is fixedly connected to the inner side of the processing box (1), and a cavity (3) is formed between the bottom of the horizontal partition (2) and the processing box (1), characterized in that: The bottom of the processing box (1) is fixedly connected to a motor (4), a rotating main shaft (5) is fixedly connected to the rotor of the motor (4), a filter assembly (6) for filtering the oil inside the processing box (1) is arranged outside the rotating main shaft (5), a rotating support shaft (7) is rotatably connected to the processing box (1), the rotating support shaft (7) is transmission-connected to the rotating main shaft (5), and a cleaning assembly (8) is fixedly connected to the top of the rotating support shaft (7). When the filtering assembly (6) moves to the top of the processing box (1), the cleaning assembly (8) cleans impurities filtered out by the filtering assembly (6).

2. The cooling device for a hydraulic cylinder according to claim 1, characterized in that: The bottom of the processing box (1) is fixedly connected to a mounting foot (9), the top of the processing box (1) is fixedly connected to a maintenance pipe (10), and the top of the processing box (1) is fixedly connected to a fence (11).

3. The cooling device for a hydraulic cylinder according to claim 1, characterized in that: An oil inlet pipe (12) and an oil outlet pipe (13) are fixedly connected to the bottom of the horizontal partition (2); the oil inlet pipe (12) and the oil outlet pipe (13) are located in the cavity (3); and the oil inlet pipe (12) and the oil outlet pipe (13) are both communicated with the top of the horizontal partition (2).

4. The cooling device for a hydraulic cylinder according to claim 1, characterized in that: The cleaning assembly (8) further comprises an impurity collecting unit (14), wherein the impurity collecting unit (14) comprises a collecting drawer (15) slidably connected to the top side of the processing box (1), and a discharge hole (16) is provided on the top of the processing box (1), and the discharge hole (16) is communicated with the interior of the collecting drawer (15).

5. The cooling device for a hydraulic cylinder according to claim 4, characterized in that: The filter assembly (6) includes an external thread (17) arranged on the outside of the rotating main shaft (5), the external thread (17) is threadedly connected to a sliding block (18), the sliding block (18) is connected to a filter ring (20) on the outside through a connecting rod (19), the filter ring (20) is slidably connected to a sliding oil collecting plate (21), the sliding oil collecting plate (21) is slidably connected to the side wall of the processing box (1), a filter screen (22) is arranged on the top of the filter ring (20), a positioning spring (23) is fixedly connected between the sliding oil collecting plate (21) and the filter ring (20), and when the positioning spring (23) is not subjected to external force, the top plane of the filter ring (20) is flush with the contact position of the sliding oil collecting plate (21).

6. The cooling device for a hydraulic cylinder according to claim 5, characterized in that: Two extrusion springs (24) are sleeved on the outer side of the rotating main shaft (5), and the extrusion springs (24) are fixedly connected to the top of the processing box (1) and the upper surface of the horizontal partition (2) respectively.

7. The cooling device for a hydraulic cylinder according to claim 1, characterized in that: The outer side of the rotating main shaft (5) is fixedly connected with a driving gear (25), and the outer side of the rotating support shaft (7) is fixedly connected with a driven gear (26), and the driving gear (25) and the driven gear (26) are meshed.

8. The cooling device for a hydraulic cylinder according to claim 6, characterized in that: The cleaning assembly (8) comprises a rotating scraper (27) fixedly connected to the top of the rotating support shaft (7), and the rotating scraper (27) cooperates with the filtering assembly (6) when rotating.

9. The cooling device for a hydraulic cylinder according to any one of claims 1 to 8, characterized in that: The processing box (1) further comprises a cooling assembly (28), wherein the cooling assembly (28) comprises a rotating blade (29) which is transmission-connected to the rotating main shaft (5); a heat dissipation hole (30) is provided on the side wall of the processing box (1); and when the rotating blade (29) rotates, the rotating blade (29) drives the air flow to cool the air.

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