Self-cleaning device for hydraulic oil cylinder

Abstract

The utility model relates to the technical field of hydraulic oil cylinders, and discloses a self-cleaning device for a hydraulic oil cylinder, which comprises a device shell, a placing table for positioning the hydraulic cylinder body is coaxially arranged at the inner bottom of the device shell, a sealing cover for fixing the hydraulic cylinder body is arranged at the top of the device shell, and a through hole for a piston rod to penetrate through is formed in the sealing cover; a cleaning mechanism used for cleaning the outer surface of the hydraulic cylinder body is arranged in the device shell and comprises a water tank arranged at the bottom in the device shell, cleaning sponges distributed in the circumferential direction of the outer surface of the hydraulic cylinder body and a lifting assembly driving the cleaning sponges to ascend and descend. The inner top of the device shell is provided with extrusion ring grooves corresponding to the cleaning sponges, and when the lifting assembly drives the cleaning sponges to ascend into the extrusion ring grooves, due to space limitation of the extrusion ring grooves, water adsorbed in the cleaning sponges is extruded and falls into a water tank below. The self-cleaning device has the effect of reducing environmental pollution in the cleaning process of the self-cleaning device.

Description

Technical Field

[0001] The present application relates to the technical field of hydraulic cylinders, and in particular to a self-cleaning device for a hydraulic cylinder. Background Art

[0002] Hydraulic cylinder, also known as hydraulic cylinder or oil cylinder, is the core actuator in the hydraulic system. It acts on the plunger pump or piston through high-pressure oil, and uses the effective action area to generate thrust or pull force, thereby driving the mechanical equipment to work. The output force of the hydraulic cylinder is proportional to the effective area of ​​the piston and the pressure difference on both sides, which enables the hydraulic cylinder to provide a large output force and high stability. Therefore, hydraulic cylinders are widely used in various industrial fields, such as machinery manufacturing, metallurgy, chemical industry, etc.

[0003] In the prior art, cleaning of hydraulic cylinders is mostly done manually, which is time-consuming, labor-intensive and inefficient. In addition, manual cleaning inevitably requires moving the hydraulic cylinder, which threatens the personal safety of workers when doing cleaning work because the hydraulic cylinder is relatively heavy.

[0004] A Chinese patent with announcement number CN212775030U discloses an engineering hydraulic cylinder with a self-cleaning device, including a base, a hydraulic cylinder body is arranged above the base, and a cleaning box is arranged on the outside of the hydraulic cylinder body. At the same time, the cleaning box is rotatably connected to the hydraulic cylinder body, a limiting hole is opened on the top of the cleaning box, and a refrigerator is arranged inside the cleaning box.

[0005] During use, the above-mentioned engineering hydraulic cylinder with a self-cleaning device uses a cleaning sponge soaked in cold water to move and wipe the outer surface of the hydraulic cylinder body. Since the surface of the hydraulic cylinder exposed to the outside during the wiping process is more likely to adhere to dust after being wet, the engineering hydraulic cylinder needs to be cleaned again soon after being cleaned. In addition, a refrigerator and a cleaning sponge are used to cool the engineering hydraulic cylinder. During the cooling and cleaning process, dripping and splashing of water will occur continuously due to the up and down wiping of the cleaning sponge, thereby affecting the working environment when cleaning the engineering hydraulic cylinder. Utility Model Content

[0006] In order to reduce the pollution to the environment during the cleaning process of the self-cleaning device, the present application provides a self-cleaning device for a hydraulic cylinder.

[0007] The present application provides a self-cleaning device for a hydraulic cylinder using the following technical solution:

[0008] A self-cleaning device for a hydraulic cylinder comprises a device housing, wherein a placing platform for positioning a hydraulic cylinder body is coaxially arranged at the inner bottom of the device housing, a sealing cover for fixing the hydraulic cylinder body is arranged at the top of the device housing, and a through hole for a piston rod to pass through is opened in the sealing cover, a cleaning mechanism for cleaning the outer surface of the hydraulic cylinder body is arranged in the device housing, the cleaning mechanism comprises a water tank arranged at the inner bottom of the device housing, cleaning sponges distributed circumferentially along the outer surface of the hydraulic cylinder body, and a lifting assembly for driving the cleaning sponges to rise and fall, and an extrusion ring groove is arranged at the inner top of the device housing corresponding to a plurality of cleaning sponges, and when the lifting assembly drives a plurality of cleaning sponges to rise into the extrusion ring groove, water adsorbed in the plurality of cleaning sponges is squeezed out and falls into the water tank below due to the space limitation of the extrusion ring groove.

[0009] By adopting the above technical scheme, after the hydraulic cylinder is placed on the placement table, the hydraulic cylinder body is fixed in the device housing by the sealing cover. When the hydraulic cylinder body needs to be cleaned, the lifting component starts to work, first driving the cleaning sponge to drop into the water tank along the outer surface of the hydraulic cylinder body; driving the cleaning sponge that has been fully soaked in clean water to rise and fall back and forth, and in the process of lifting and falling, the cleaning sponge is made to fit the outer surface of the hydraulic cylinder body to clean and wipe the outer surface of the hydraulic cylinder body; driving the cleaning sponge to rise until the cleaning sponge enters the extrusion ring groove, and due to space constraints, the cleaning sponge is squeezed, thereby squeezing out the water adsorbed inside it, and the squeezed water then falls back into the water tank below, realizing the recycling of water, while also avoiding the problem of dripping and splashing during the cleaning process, thereby reducing the pollution to the environment during the cleaning process of the self-cleaning device; the cleaning sponge that has been squeezed out of water is lifted and lowered back and forth again, and in the process of lifting and falling, the excess water on the outer surface of the hydraulic cylinder body is absorbed away, thereby improving the dryness and cleanliness of the wiped hydraulic cylinder, and improving the anti-fouling effect of the hydraulic cylinder.

[0010] Optionally, a fixing ring is provided at the inner top of the extrusion ring groove, and the lifting assembly includes a screw rod which is arranged on the fixing ring and the bottom wall of the water tank and rotates vertically together with each cleaning sponge, a mounting arc plate which is threadedly sleeved on the screw rod and is used to fix the cleaning sponge, and a driving member which drives the screw rod to rotate, and each of the mounting arc plates is provided with a guide rod parallel to the screw rod which slides vertically.

[0011] By adopting the above technical solution, the driving member drives the screw to rotate, and the rotation of the screw thereby drives the installation arc plate to rotate. Due to the limitation and guidance of the guide rod, the installation arc plate, in cooperation with the thread of the screw, performs a lifting movement along the guidance of the guide rod, so as to realize the lifting action of the cleaning sponge to wipe the outer side of the hydraulic cylinder.

[0012] Optionally, the driving member includes a gear ring rotatably arranged on the bottom wall of the fixed ring, a driven gear sleeved on the screw and meshing with the gear ring, and a servo motor driving the gear ring to rotate. The servo motor is arranged on the top of the device housing, and its output shaft rotates together, passes through the device housing and the fixed ring and extends into the extrusion ring groove. The output shaft of the servo motor extending into the extrusion ring groove is sleeved with a driving gear meshing with the gear ring.

[0013] By adopting the above technical solution, when the servo motor is started, it drives the gear ring to rotate through the driving gear, and then drives the driven gear and the screw to rotate, thereby realizing the lifting action of the cleaning sponge.

[0014] Optionally, the cleaning sponge is detachably arranged on the mounting arc plate.

[0015] By adopting the above technical solution, the cleaning sponge is a consumable item. Long-term wiping operations will cause irreversible damage to the cleaning sponge. The cleaning sponge is detachably installed on the mounting arc plate, which improves the convenience of replacing and maintaining the cleaning sponge and greatly improves the flexibility of using the device.

[0016] Optionally, a rubber pad is provided on the side of the sealing cover facing the hydraulic cylinder body, and the rubber pad abuts against the top of the hydraulic cylinder body.

[0017] By adopting the above technical solution, the setting of the rubber pad enables the sealing cover to tightly contact the top of the hydraulic cylinder body, thereby improving the sealing performance to prevent the leakage of water or detergent during the cleaning process; at the same time, the setting of the rubber pad can also enable the sealing cover to convert the rigid contact into flexible contact when contacting and fixing the hydraulic cylinder body, thereby reducing the damage caused by the contact to the hydraulic cylinder body.

[0018] Optionally, a wear-resistant sealing ring is provided on the inner side wall of the through hole facing the piston rod.

[0019] By adopting the above technical solution, the wear-resistant sealing ring added between the inner wall of the through hole and the piston rod can not only reduce the wear of the piston rod during movement, but also effectively prevent leakage problems caused by wear.

[0020] Optionally, a visual window for observing the water quality in the water tank is provided on the device shell at the position of the water tank, and a water inlet pipe and a water outlet pipe connected to the water tank are provided on the side wall of the device shell.

[0021] By adopting the above technical solution, the operator can visually observe the water quality in the water tank, including the cleanliness and amount of the water, through the viewing window, which provides convenience for the operator to replace or replenish water in time.

[0022] Optionally, the visual window is provided with scale markings for facilitating control of the water volume in the water tank.

[0023] By adopting the above technical solution, in order to ensure that the water volume in the water tank is always maintained within the optimal range, the operator can refer to the scale markings on the visual window to increase or decrease the water volume in the water tank in time.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] 1. After placing the hydraulic cylinder on the placement table, fix the hydraulic cylinder body in the device housing through the sealing cover. When the hydraulic cylinder body needs to be cleaned, the lifting assembly starts to work. First, the cleaning sponge is driven to drop into the water tank along the outer surface of the hydraulic cylinder body; the cleaning sponge that has been fully soaked in clean water is driven to rise and fall back and forth, and during the lifting process, the cleaning sponge is made to fit the outer surface of the hydraulic cylinder body to clean and wipe the outer surface of the hydraulic cylinder body; the cleaning sponge is driven to rise until the cleaning sponge enters the extrusion ring groove. Due to space constraints, the cleaning sponge is squeezed, thereby squeezing out the water adsorbed inside it, and the squeezed water then falls back into the water tank below, realizing the recycling of water, while also avoiding the problem of dripping and splashing during the cleaning process, thereby reducing the pollution to the environment during the cleaning process of the self-cleaning device; the cleaning sponge that has been squeezed out of the water is lifted and lowered back and forth again, and during the lifting process, the excess water on the outer surface of the hydraulic cylinder body is absorbed, thereby improving the dryness and cleanliness of the wiped hydraulic cylinder, and improving the anti-fouling effect of the hydraulic cylinder;

[0026] 2. The driving member drives the screw to rotate, and the screw rotates to drive the installation arc plate to rotate. Due to the limitation and guidance of the guide rod, the installation arc plate cooperates with the thread of the screw and moves up and down along the guide of the guide rod, so as to realize the lifting action of the cleaning sponge wiping the outer side of the hydraulic cylinder;

[0027] 3. When the servo motor starts, it drives the gear ring to rotate through the driving gear, and then drives the driven gear and the screw to rotate, thereby realizing the lifting and lowering action of the cleaning sponge. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0029] Figure 2 It is a cross-sectional view of the overall structure of an embodiment of the present application.

[0030] Figure 3 It is a schematic diagram showing the connection relationship between the screw rod, the guide rod and the fixing ring in the embodiment of the present application.

[0031] Figure 4 It is an exploded view showing the connection relationship between the cleaning sponge and the mounting arc plate in the embodiment of the present application.

[0032] Description of reference numerals:

[0033] 01. Hydraulic cylinder body; 1. Device housing; 11. Water inlet pipe; 12. Water outlet pipe; 13. Visual window; 131. Scale mark; 14. Extrusion ring groove; 2. Controller; 3. Placement table; 4. Cover; 41. Handle; 42. Rubber pad; 43. Through hole; 431. Wear-resistant sealing ring; 5. Cleaning mechanism; 51. Water tank; 52. Cleaning sponge; 521. Support plate; 5211. Plug-in plate; 53. Lifting assembly; 531. Screw; 532. Mounting arc plate; 5321. Plug-in hole; 533. Driving part; 5331. Gear ring; 5332. Driven gear; 5333. Servo motor; 6. Fixed ring; 7. Guide rod; 8. Driving gear. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-4 This application is described in further detail.

[0035] The embodiment of the present application discloses a self-cleaning device for a hydraulic cylinder.

[0036] Reference Figure 1 and Figure 2 A self-cleaning device for a hydraulic cylinder includes a device housing 1, a controller 2 is fixedly arranged on the device housing 1, a placing table 3 is coaxially fixedly arranged on the inner bottom of the device housing 1, and the placing table 3 is arranged to match the hydraulic cylinder body 01, a cover 4 is arranged on the top of the device housing 1, a handle 41 for easy picking is fixedly arranged on the top of the cover 4, and a rubber pad 42 is fixedly arranged on the side of the cover 4 facing the hydraulic cylinder body 01, the rubber pad 42 abuts against the top of the hydraulic cylinder body 01, and the cover 4 is fixed to the device housing 1 by bolts. A through hole 43 for the piston rod to pass through is opened in the cover 4, and a wear-resistant sealing ring 431 is fixedly arranged on the inner side wall of the through hole 43 facing the piston rod. A cleaning mechanism 5 for cleaning the outer surface of the hydraulic cylinder body 01 is arranged in the device housing 1, and the control electrical appliance in the cleaning mechanism 5 is electrically connected to the controller 2.

[0037] Reference Figure 1 and Figure 2 After the hydraulic cylinder is inserted into the device housing 1 and positioned on the placement table 3, the hydraulic cylinder body 01 is fixed in the device housing 1 using the cover 4, and then the cleaning mechanism 5 in the device housing 1 is controlled by the controller 2 to clean the outer surface of the hydraulic cylinder body 01.

[0038] Reference Figure 1 and Figure 2The cleaning mechanism 5 includes a water tank 51, a cleaning sponge 52, and a lifting assembly 53. The water tank 51 is provided near the bottom of the device housing 1, and a water inlet pipe 11 and a water outlet pipe 12 connected to the water tank 51 are provided on the side wall of the device housing 1. A visual window 13 is fixedly provided on the device housing 1 and connected to the water tank 51. A scale mark 131 is vertically glued on the outer side wall of the visual window 13.

[0039] Reference Figure 2 and Figure 3 The inner top of the device housing 1 is provided with an extrusion ring groove 14 for extruding a plurality of cleaning sponges 52. The extrusion ring groove 14 is provided with a guide surface on the bottom wall facing the cleaning sponge 52. A fixing ring 6 is coaxially fixedly provided on the inner top of the extrusion ring groove 14. The lifting assembly 53 includes a screw 531, a mounting arc plate 532 and a driving member 533. The screw 531 is arranged on the fixing ring 6 and the bottom wall of the water tank 51 for co-rotation in the vertical direction. In this embodiment, four cleaning sponges 52 are arranged around the circumference of the hydraulic cylinder body 01. The screw 531 corresponds to the cleaning sponge 52 one by one, and the mounting arc plate 532 is arranged on the corresponding screw 531 through a threaded sleeve. A guide rod 7 parallel to the screw 531 is vertically slidably penetrated on each mounting arc plate 532. The cleaning sponge 52 is installed on the side wall of the mounting arc plate 532 facing the hydraulic cylinder body 01.

[0040] Reference Figure 4 , two support plates 521 are fixedly arranged in opposite directions along the arc length on one side of the cleaning sponge 52 facing the installation arc plate 532, and a movable gap is left between the two support plates 521. L-shaped plug-in plates 5211 are fixedly arranged in opposite directions on the two support plates 521, and the installation arc plate 532 is provided with a plug-in hole 5321 corresponding to each plug-in plate 5211. The plug-in hole 5321 matches the width and height of the plug-in plate 5211, and the depth of the plug-in hole 5321 matches the part of the L-shaped plug-in plate 5211 perpendicular to the support plate 521. When the cleaning sponge 52 is installed on the installation arc plate 532, the installation arc plate 532 is limited between the part of the L-shaped plug-in plate 5211 parallel to the support plate 521 and the support plate 521.

[0041] Reference Figure 2 and Figure 3The driving member 533 includes a gear ring 5331, a driven gear 5332 and a servo motor 5333. The gear ring 5331 is located in the extrusion ring groove 14 and is rotatably arranged on the bottom wall of the fixed ring 6. One driven gear 5332 is provided for each screw rod 531 and is fixedly sleeved on the top of the screw rod 531 and meshed with the gear ring 5331. The servo motor 5333 is fixedly arranged on the top of the device housing 1, and its output shaft rotates together and penetrates the device housing 1 and the fixed ring 6 and extends into the extrusion ring groove 14. The output shaft of the servo motor 5333 extending into the extrusion ring groove 14 is fixedly sleeved with a driving gear 8 meshed with the gear ring 5331. The servo motor 5333 is electrically connected to the controller 2.

[0042] Reference Figure 1 and Figure 3 By inputting instructions to the controller 2, the servo motor 5333 is controlled to run, and the output shaft of the servo motor 5333 rotates to drive the driving gear 8 to rotate, and the driving gear 8 drives the gear ring 5331 to rotate, and then drives the driven gear 5332 and the screw 531 to rotate, thereby realizing the lifting action of the cleaning sponge 52.

[0043] The implementation principle of the self-cleaning device for a hydraulic cylinder in the embodiment of the present application is as follows: after placing the hydraulic cylinder on the placing table 3, the hydraulic cylinder body 01 is fixed in the device housing 1 through the cover 4. When the hydraulic cylinder body 01 needs to be cleaned, the servo motor 5333 is controlled to operate by inputting instructions to the controller 2. The output shaft of the servo motor 5333 rotates to drive the driving gear 8 to rotate, and the gear ring 5331 is driven to rotate through the driving gear 8, thereby driving the driven gear 5332 and the screw 531 to rotate. Under the limit and guidance of the guide rod 7, the arc plate 532 is installed to cooperate with the thread of the screw 531, and the cleaning sponge 52 is lifted and lowered along the guide of the guide rod 7;

[0044] First, the cleaning sponge 52 is lowered into the water tank 51 along the outer surface of the hydraulic cylinder body 01; the cleaning sponge 52 that has been fully soaked in clean water is driven to rise and fall back and forth, and during the lifting process, the cleaning sponge 52 is made to fit the outer surface of the hydraulic cylinder body 01 to clean and wipe the outer surface of the hydraulic cylinder body 01; then the cleaning sponge 52 is driven to rise until the cleaning sponge 52 enters the extrusion ring groove 14 under the transition of the guide surface, and the cleaning sponge 52 is squeezed due to space limitations, thereby squeezing out the water adsorbed inside it, and the squeezed out water then falls back into the water tank 51 below, thereby realizing the recycling of water; finally, the cleaning sponge 52 that has been squeezed out of the water is lifted and lifted back and forth again, and during the lifting process, the excess water on the outer surface of the hydraulic cylinder body 01 is absorbed.

[0045] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A self-cleaning device for a hydraulic cylinder, characterized in that: The invention comprises a device housing (1), wherein a placing platform (3) for positioning a hydraulic cylinder body (01) is coaxially arranged at the inner bottom of the device housing (1), a cover (4) for fixing the hydraulic cylinder body (01) is arranged at the top of the device housing (1), and a through hole (43) for a piston rod to pass through is opened in the cover (4), and a cleaning mechanism (5) for cleaning the outer surface of the hydraulic cylinder body (01) is arranged in the device housing (1), and the cleaning mechanism (5) comprises a water tank (5) arranged at the inner bottom of the device housing (1). 1), cleaning sponges (52) distributed along the circumference of the outer surface of the hydraulic cylinder body (01) and a lifting assembly (53) for driving the cleaning sponges (52) to rise and fall, the inner top of the device housing (1) is provided with an extrusion ring groove (14) corresponding to the plurality of cleaning sponges (52), when the lifting assembly (53) drives the plurality of cleaning sponges (52) to rise into the extrusion ring groove (14), the water adsorbed in the plurality of cleaning sponges (52) is squeezed out and falls into the water tank (51) below due to the space limitation of the extrusion ring groove (14).

2. A self-cleaning device for a hydraulic cylinder according to claim 1, characterized in that: A fixing ring (6) is arranged at the inner top of the extrusion ring groove (14), and the lifting assembly (53) comprises a screw rod (531) arranged on the fixing ring (6) and the bottom wall of the water tank (51) for vertically co-rotating with each cleaning sponge (52), a mounting arc plate (532) threadedly sleeved on the screw rod (531) for fixing the cleaning sponge (52), and a driving member (533) for driving the screw rod (531) to rotate, and each of the mounting arc plates (532) is provided with a guide rod (7) parallel to the screw rod (531) for vertical sliding movement.

3. A self-cleaning device for a hydraulic cylinder according to claim 2, characterized in that: The driving member (533) comprises a gear ring (5331) rotatably arranged on the bottom wall of the fixed ring (6), a driven gear (5332) sleeved on the screw (531) and meshing with the gear ring (5331), and a servo motor (5333) driving the gear ring (5331) to rotate. The servo motor (5333) is arranged on the top of the device housing (1), and its output shaft rotates together and passes through the device housing (1) and the fixed ring (6) and extends into the extrusion ring groove (14). The output shaft of the servo motor (5333) extending into the extrusion ring groove (14) is sleeved with a driving gear (8) meshing with the gear ring (5331).

4. A self-cleaning device for a hydraulic cylinder according to claim 2, characterized in that: The cleaning sponge (52) is detachably arranged on the mounting arc plate (532).

5. A self-cleaning device for a hydraulic cylinder according to claim 1, characterized in that: A rubber pad (42) is provided on the side of the sealing cover (4) facing the hydraulic cylinder body (01), and the rubber pad (42) abuts against the top of the hydraulic cylinder body (01).

6. A self-cleaning device for a hydraulic cylinder according to claim 1, characterized in that: A wear-resistant sealing ring (431) is arranged on the inner side wall of the through hole (43) facing the piston rod.

7. A self-cleaning device for a hydraulic cylinder according to claim 1, characterized in that: The device housing (1) is provided with a viewing window (13) for observing the water quality in the water tank (51) at a position located on the water tank (51), and a water inlet pipe (11) and a water outlet pipe (12) connected to the water tank (51) are provided on the side wall of the device housing (1).

8. A self-cleaning device for a hydraulic cylinder according to claim 7, characterized in that: The visual window (13) is provided with a scale mark (131) for facilitating control of the water volume in the water tank (51).

Images