Leak-proof device based on hydraulic oil cylinder

Abstract

The leakproof device based on the hydraulic oil cylinder comprises a hydraulic oil cylinder body, a top plate, an air exhaust mechanism and an air storage mechanism, communicating assemblies are arranged on the left side and the right side of the rear side of a transfer frame, and connecting assemblies are arranged on the left side and the right side of the top of the transfer frame. Through the arrangement of the transfer frame, the air inlet hopper and the filter screen, air can sequentially pass through the filter screen, the air inlet hopper and the transfer frame to enter the exhaust pipe, a user can conveniently clean the filter screen by detaching the air inlet hopper, and the problem that due to the fact that the inner diameter of the exhaust pipe is small, and the coverage range of the dust filter screen is small, the dust filter screen is prone to falling off after being used for a long time is solved. The problems that a dust filtering net is blocked by dust attached to the surface of the air suction pipe, the air suction process is affected, the telescopic effect of a piston rod is reduced, and the dust filtering net is fixed in the air suction pipe, so that a user cannot regularly clean the air suction pipe conveniently are solved, and the effect of convenient cleaning is achieved.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder technology, specifically to a leakage prevention device based on a hydraulic cylinder. Background Technology

[0002] A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy to perform linear reciprocating or oscillating motion. It has a simple structure and reliable operation. When used to achieve reciprocating motion, it eliminates the need for a speed reduction device and has no transmission backlash, resulting in smooth movement. Therefore, it is widely used in the hydraulic systems of various machines. In traditional hydraulic cylinders, the lever is often moved directly by the oil inside the cylinder to support the object. However, because the oil inside the cylinder is liquid, poor sealing can lead to oil leakage, rendering the cylinder unusable.

[0003] For example, authorization announcement number CN219865697U discloses a leak-proof device for hydraulic cylinders, relating to the field of hydraulic cylinders. A leak-proof device for hydraulic cylinders includes: a suction cylinder, fixedly installed on the side wall of the hydraulic cylinder barrel; a pull rod with a piston, slidably connected inside the suction cylinder; a top block fixedly connected to the upper end of the pull rod and the end of the piston rod; and an annular air reservoir, fixedly installed at the upper end of the hydraulic cylinder barrel near the oil seal of the cylinder head, the annular air reservoir being sleeved on the outside of the piston rod. This invention can blow away dust adhering to the piston rod, preventing dust from scratching the piston rod and damaging the oil seal when it comes into contact with it, thus avoiding hydraulic oil leakage from the hydraulic cylinder and effectively improving the service life of the hydraulic cylinder.

[0004] Based on the search of patent numbers and the shortcomings of existing technologies, the following was found:

[0005] Although this type of anti-leakage device for hydraulic cylinders can blow away dust adhering to the piston rod, effectively improving the service life of the hydraulic cylinder, during use, due to the small inner diameter of the suction pipe and the similarly small coverage area of ​​the dust filter, the dust adhering to the surface of the dust filter will clog the filter after long-term use, affecting the suction process and reducing the extension and retraction effect of the piston rod. Since the dust filter is fixed inside the suction pipe, it is inconvenient for users to clean it regularly. Utility Model Content

[0006] To address the problems mentioned in the background art, the purpose of this utility model is to provide a leak-proof device based on a hydraulic cylinder, which has the advantage of convenient cleaning. It solves the problem that because the inner diameter of the suction pipe is small, the coverage area of ​​the dust filter is also small. Therefore, after long-term use, the dust adhering to the surface of the dust filter will clog the dust filter, affecting the suction process and reducing the extension and retraction effect of the piston rod. Furthermore, the dust filter is fixed inside the suction pipe, making it inconvenient for users to clean it regularly.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a leak-proof device based on a hydraulic cylinder, comprising a hydraulic cylinder body, a top plate, an air extraction mechanism, and an air storage mechanism. The bottom of the top plate is fixedly connected to the piston end of the hydraulic cylinder body. The air extraction mechanism includes a fixed plate, the inner side of which is fixedly connected to the surface of the hydraulic cylinder body. A suction cylinder is fixedly connected to the top of the fixed plate. A stopper rod is movably connected to the inner wall of the suction cylinder. One end of the stopper rod near the top plate passes through the suction cylinder and is fixedly connected to the bottom of the top plate. The stopper rod is movably connected to the suction cylinder. The air storage mechanism includes an air storage tank. The bottom of the air storage tank... The part is fixedly connected to the top of the hydraulic cylinder body. The inner wall of the air storage tank is connected to a nozzle. Several nozzles are arranged in a ring and are evenly distributed. The bottom of the front side of the suction cylinder surface is connected to an air suction pipe. The bottom of the rear side of the suction cylinder surface is connected to an air supply pipe. The other end of the air supply pipe is connected to both sides of the air storage tank surface. A transfer frame is movably connected to the front side of the hydraulic cylinder body surface. Air inlet hoppers are provided on the left and right sides of the top of the transfer frame. The inner wall of the air inlet hopper is inlaid with a filter screen. A connecting component is provided on the left and right sides of the rear side of the transfer frame. A connecting component is provided on the left and right sides of the top of the transfer frame.

[0008] In a preferred embodiment of this invention, the connecting component includes a connecting hole, and an internal threaded sleeve is threadedly connected to the end of the suction pipe away from the suction cylinder, wherein the surface of the internal threaded sleeve is movably connected to the inner wall of the connecting hole.

[0009] In a preferred embodiment of this invention, the connecting assembly includes a threaded hole, and the bottom of the air intake hopper is connected to a threaded pipe, the surface of which is threadedly connected to the inner wall of the threaded hole.

[0010] As a preferred embodiment of this utility model, a sealing plate is provided inside the transfer frame, the surface of the sealing plate is tightly fitted to the inner wall of the transfer frame, and pull plates are fixedly connected to the left and right sides of the front side of the sealing plate.

[0011] As a preferred embodiment of this utility model, positioning plates are fixedly connected to the front sides of the left and right sides of the inner wall of the transfer frame, and clamping plates are fixedly connected to the left and right sides of the rear side of the sealing plate, with the outer side of the clamping plate engaging with the inner side of the positioning plate.

[0012] As a preferred embodiment of this utility model, a knob ring is fixedly connected to the surface of the internal threaded sleeve, the rear side of the knob ring is in contact with the rear side of the inner wall of the transfer frame, and the positioning plate and the clamping plate are made of PP material.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model, by setting up a transfer frame, an air inlet hopper, and a filter, allows air to enter the interior of the suction pipe sequentially through the filter, air inlet hopper, and transfer frame. The air inlet hopper can be disassembled to facilitate user cleaning of the filter. This solves the problem that because the inner diameter of the suction pipe is small, the coverage area of ​​the dust filter is also small. Therefore, after long-term use, the dust adhering to the surface of the dust filter will clog the filter, affecting the air extraction process and reducing the extension and retraction effect of the piston rod. Furthermore, the dust filter is fixed inside the suction pipe, making it inconvenient for users to clean it regularly. This invention achieves a convenient cleaning effect.

[0015] 2. By setting up a connecting component, the connecting hole facilitates the connection between the transfer frame and the air extraction pipe. The internal threaded sleeve can seal the gap between the air extraction pipe and the connecting hole, thereby preventing air leakage inside the transfer frame.

[0016] 3. By setting up a connecting component, the threaded hole can position the threaded tube, and the threaded tube positioning can position the air intake bucket. By rotating the air intake bucket, the threaded tube can be rotated, which makes it convenient for the user to disassemble and clean the air intake bucket. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a three-dimensional exploded cross-sectional view of the present invention;

[0019] Figure 3 This is a three-dimensional exploded view of the gas storage box and sealing plate of this utility model.

[0020] In the diagram: 1. Hydraulic cylinder body; 2. Top plate; 3. Air extraction mechanism; 31. Fixing plate; 32. Suction cylinder; 33. Plug rod; 4. Air storage mechanism; 41. Air storage tank; 42. Nozzle; 43. Air extraction pipe; 44. Air delivery pipe; 5. Transfer frame; 6. Air inlet hopper; 7. Filter screen; 8. Connecting component; 81. Connecting hole; 82. Internal threaded sleeve; 9. Connecting component; 91. Threaded hole; 92. Threaded pipe; 10. Sealing plate; 11. Pull plate; 12. Positioning plate; 13. Clamping plate; 14. Knob ring. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figures 1 to 3 As shown, this utility model provides a leakage prevention device based on a hydraulic cylinder, including a hydraulic cylinder body 1, a top plate 2, an air extraction mechanism 3, and an air storage mechanism 4. The bottom of the top plate 2 is fixedly connected to the piston end of the hydraulic cylinder body 1. The air extraction mechanism 3 includes a fixing plate 31, the inner side of which is fixedly connected to the surface of the hydraulic cylinder body 1. A suction cylinder 32 is fixedly connected to the top of the fixing plate 31. A stopper rod 33 is movably connected to the inner wall of the suction cylinder 32. One end of the stopper rod 33 near the top plate 2 passes through the suction cylinder 32 and is fixedly connected to the bottom of the top plate 2. The stopper rod 33 is movably connected to the suction cylinder 32. The air storage mechanism 4 includes an air storage tank 41, the bottom of which is connected to the piston end of the top plate 2. The top of the hydraulic cylinder body 1 is fixedly connected, and the inner wall of the air storage tank 41 is connected to a nozzle 42. Several nozzles 42 are arranged in a ring and are evenly distributed. The bottom of the front side of the suction cylinder 32 is connected to a suction pipe 43, and the bottom of the rear side of the suction cylinder 32 is connected to a delivery pipe 44. The other end of the delivery pipe 44 is connected to both sides of the surface of the air storage tank 41. The front side of the surface of the hydraulic cylinder body 1 is movably connected to a transfer frame 5. The left and right sides of the top of the transfer frame 5 are provided with air inlets 6. The inner wall of the air inlets 6 is inlaid with a filter screen 7. The left and right sides of the rear side of the transfer frame 5 are provided with connecting components 8, and the left and right sides of the top of the transfer frame 5 are provided with connecting components 9.

[0023] refer to Figure 3 The connecting component 8 includes a connecting hole 81, and an internal threaded sleeve 82 is threadedly connected to one end of the suction pipe 43 away from the suction cylinder 32. The surface of the internal threaded sleeve 82 is movably connected to the inner wall of the connecting hole 81.

[0024] As a technical optimization of this utility model, by setting the connecting component 8, the connecting hole 81 facilitates the connection between the transfer frame 5 and the air extraction pipe 43. The internal threaded sleeve 82 can seal the gap between the air extraction pipe 43 and the connecting hole 81, thereby preventing air leakage inside the transfer frame 5.

[0025] refer to Figure 2 The connecting component 9 includes a threaded hole 91, and the bottom of the air inlet 6 is connected to a threaded tube 92, the surface of which is threadedly connected to the inner wall of the threaded hole 91.

[0026] As a technical optimization of this utility model, by setting the connecting component 9, the threaded hole 91 can position the threaded tube 92, the positioning of the threaded tube 92 can position the air intake hopper 6, and by rotating the air intake hopper 6, the threaded tube 92 can be rotated, thereby facilitating the user to disassemble and clean the air intake hopper 6.

[0027] refer to Figure 3 The transfer frame 5 is equipped with a sealing plate 10 inside. The surface of the sealing plate 10 is tightly fitted to the inner wall of the transfer frame 5. Pull plates 11 are fixedly connected to the left and right sides of the front side of the sealing plate 10.

[0028] As a technical optimization of this utility model, by setting a sealing plate 10 and a pull plate 11, the sealing plate 10 can seal the transfer frame 5, and the pull plate 11 makes it easy for the user to disassemble the sealing plate 10, thereby making it easy for the user to clean the inner wall of the transfer frame 5.

[0029] refer to Figure 3 Positioning plates 12 are fixedly connected to the front sides of the left and right sides of the inner wall of the transfer frame 5, and clamping plates 13 are fixedly connected to the left and right sides of the rear side of the sealing plate 10. The outer side of the clamping plate 13 is engaged with the inner side of the positioning plate 12.

[0030] As a technical optimization of this utility model, by setting a positioning plate 12 and a clamping plate 13, the positioning plate 12 can clamp and position the clamping plate 13, and the clamping plate 13 can position the sealing plate 10.

[0031] refer to Figure 3 A knob ring 14 is fixedly connected to the surface of the internal threaded sleeve 82. The rear side of the knob ring 14 fits against the rear side of the inner wall of the transfer frame 5. The positioning plate 12 and the clamping plate 13 are made of PP material.

[0032] As a technical optimization of this utility model, by setting a knob ring 14, the knob ring 14 can limit the inner thread sleeve 82, thereby preventing the air extraction pipe 43 from separating from the transfer frame 5. The PP material positioning plate 12 and clamping plate 13 have a certain deformation capability, which makes it convenient for users to disassemble and install the sealing plate 10.

[0033] The working principle and usage process of this utility model are as follows: In use, the suction pipe 43 is existing technology, and its structure and working principle are the same as those of the suction cylinder 32 in the prior art (application number: CN202320866710.7). One-way valves are installed in its inlet and outlet ports respectively. The inlet and outlet ports of the suction cylinder 32 are connected to the suction pipe 43 and the air delivery pipe 44 respectively. When the piston end of the hydraulic cylinder body 1 moves the top plate 2 upwards, it can move the piston rod 33 upwards inside the suction cylinder 32. At this time, air enters the air storage tank 41 through the air inlet hopper 6, threaded pipe 92, transfer frame 5, suction pipe 43, and air delivery pipe 44 in sequence. When the piston end of the hydraulic cylinder body 1 moves the top plate 2 downwards, it can move the piston rod 33 upwards. 3. Moving downwards inside the suction cylinder 32, the air inside the air tank 41 is compressed into the nozzle 42 and sprayed out, thereby blowing away the dust on the piston end surface of the hydraulic cylinder body 1. This prevents dust from settling on the oil seal and causing scratches on the piston rod wall and damage to the oil seal, thus preventing hydraulic oil leakage. By rotating the air intake hopper 6, the threaded tube 92 can be disassembled from the threaded hole 91, making it easier for the user to clean the filter screen 7. By pulling the pull plate 11, the sealing plate 10 can be removed from the interior of the transfer frame 5, making it easier for the user to clean the interior of the transfer frame 5, thus preventing the filter screen 7 from becoming clogged and affecting the extension and retraction effect of the piston end of the hydraulic cylinder body 1 during operation.

[0034] In summary, this anti-leakage device based on a hydraulic cylinder, by setting up a transfer frame 5, an air inlet 6, and a filter screen 7, allows air to sequentially enter the interior of the suction pipe 43 through the filter screen 7, the air inlet 6, and the transfer frame 5. The air inlet 6 can be disassembled to facilitate cleaning of the filter screen 7 by the user. This solves the problem that because the inner diameter of the suction pipe is small, the coverage area of ​​the dust filter is also small. Therefore, after long-term use, dust adhering to the surface of the dust filter will clog it, affecting the suction process and reducing the extension and retraction effect of the piston rod. Furthermore, since the dust filter is fixed inside the suction pipe, it is inconvenient for the user to clean it regularly.

[0035] 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.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A leakage prevention device based on a hydraulic cylinder, comprising a hydraulic cylinder body (1), a top plate (2), an air extraction mechanism (3), and an air storage mechanism (4), characterized in that: The bottom of the top plate (2) is fixedly connected to the piston end of the hydraulic cylinder body (1). The air extraction mechanism (3) includes a fixed plate (31). The inner side of the fixed plate (31) is fixedly connected to the surface of the hydraulic cylinder body (1). A suction cylinder (32) is fixedly connected to the top of the fixed plate (31). A stopper rod (33) is movably connected to the inner wall of the suction cylinder (32). One end of the stopper rod (33) near the top plate (2) passes through the suction cylinder (32) and is fixedly connected to the bottom of the top plate (2). The stopper rod (33) is movably connected to the suction cylinder (32). The air storage mechanism (4) includes an air storage box (41). The bottom of the air storage box (41) is fixedly connected to the top of the hydraulic cylinder body (1). The inner wall of the air storage box (41) is fixedly connected to the piston end of the hydraulic cylinder body (1). The wall is connected to a nozzle (42), and the nozzle (42) is provided in a plurality of them and is distributed in a ring at equal distances. The bottom of the front side of the suction cylinder (32) is connected to an air suction pipe (43), and the bottom of the rear side of the suction cylinder (32) is connected to an air supply pipe (44). The other end of the air supply pipe (44) is connected to both sides of the surface of the air storage tank (41). The front side of the surface of the hydraulic cylinder body (1) is movably connected to a transfer frame (5). The left and right sides of the top of the transfer frame (5) are provided with air inlets (6). The inner wall of the air inlets (6) is inlaid with a filter screen (7). The left and right sides of the rear side of the transfer frame (5) are provided with connecting components (8), and the left and right sides of the top of the transfer frame (5) are provided with connecting components (9).

2. The anti-leakage device based on a hydraulic cylinder according to claim 1, characterized in that: The connecting component (8) includes a connecting hole (81), and an internal threaded sleeve (82) is threaded to one end of the suction pipe (43) away from the suction cylinder (32), and the surface of the internal threaded sleeve (82) is movably connected to the inner wall of the connecting hole (81).

3. The anti-leakage device based on a hydraulic cylinder according to claim 1, characterized in that: The connecting assembly (9) includes a threaded hole (91), and the bottom of the air intake hopper (6) is connected to a threaded tube (92), the surface of which is threadedly connected to the inner wall of the threaded hole (91).

4. The anti-leakage device based on a hydraulic cylinder according to claim 2, characterized in that: The transfer frame (5) is provided with a sealing plate (10) inside. The surface of the sealing plate (10) is tightly fitted to the inner wall of the transfer frame (5). Pull plates (11) are fixedly connected to the left and right sides of the front side of the sealing plate (10).

5. A leakage prevention device based on a hydraulic cylinder according to claim 4, characterized in that: Positioning plates (12) are fixedly connected to the front sides of the left and right sides of the inner wall of the transfer frame (5), and clamping plates (13) are fixedly connected to the left and right sides of the rear side of the sealing plate (10). The outer side of the clamping plate (13) is engaged with the inner side of the positioning plate (12).

6. A leakage prevention device based on a hydraulic cylinder according to claim 5, characterized in that: A knob ring (14) is fixedly connected to the surface of the internal threaded sleeve (82). The rear side of the knob ring (14) is in contact with the rear side of the inner wall of the transfer frame (5). The positioning plate (12) and the clamping plate (13) are made of PP material.

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